kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-13 07:31:07 +00:00
Code Issues Releases Packages Activity
linux/net/ipv6/ndisc.c

2047 lines
53 KiB
Raw Normal View History

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 08:55:01 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
Treat ND option 31 as userland (DNSSL support) As specified in RFC6106, DNSSL option contains one or more domain names of DNS suffixes. 8-bit identifier of the DNSSL option type as assigned by the IANA is 31. This option should also be treated as userland. Signed-off-by: Alexey I. Froloff <raorn@raorn.name> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-06 05:50:58 +00:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: ipv6: ndisc: Neaten ND_PRINTx macros Why use several macros when one will do? Convert the multiple ND_PRINTKx macros to a single ND_PRINTK macro. Use the new net_<level>_ratelimited mechanism too. Add pr_fmt with "ICMPv6: " as prefix. Remove embedded ICMPv6 prefixes from messages. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-16 19:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 17:04:11 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPv4]: Move interface address bits to linux/if_addr.h Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-04 23:04:54 -07:00
net: display hw address of source machine during ipv6 DAD failure This patch updates the error messages displayed in kernel log to include hwaddress of the source machine that caused ipv6 duplicate address detection failures. Examples: a) When we receive a NA packet from another machine advertising our address: ICMPv6: NA: 34:ab:cd:56:11:e8 advertised our address 2001:db8:: on eth0! b) When we detect DAD failure during address assignment to an interface: IPv6: eth0: IPv6 duplicate address 2001:db8:: used by 34:ab:cd:56:11:e8 detected! v2: Changed %pI6 to %pI6c in ndisc_recv_na() Chaged the v6 address in the commit message to 2001:db8:: Suggested-by: Igor Lubashev <ilubashe@akamai.com> Signed-off-by: Vishwanath Pai <vpai@akamai.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-30 19:38:52 -04:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: Simplify IPv6 control sockets creation. Do this by replacing sock_create_kern with inet_ctl_sock_create. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:31:03 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net neigh: RCU conversion of neigh hash table David This is the first step for RCU conversion of neigh code. Next patches will convert hash_buckets[] and "struct neighbour" to RCU protected objects. Thanks [PATCH net-next] net neigh: RCU conversion of neigh hash table Instead of storing hash_buckets, hash_mask and hash_rnd in "struct neigh_table", a new structure is defined : struct neigh_hash_table { struct neighbour **hash_buckets; unsigned int hash_mask; __u32 hash_rnd; struct rcu_head rcu; }; And "struct neigh_table" has an RCU protected pointer to such a neigh_hash_table. This means the signature of (*hash)() function changed: We need to add a third parameter with the actual hash_rnd value, since this is not anymore a neigh_table field. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-04 06:15:44 +00:00
ipv6: Use universal hash for NDISC. In order to perform a proper universal hash on a vector of integers, we have to use different universal hashes on each vector element. Which means we need 4 different hash randoms for ipv6. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-28 15:06:58 -05:00
neigh: Factor out ___neigh_lookup_noref While looking at the mpls code I found myself writing yet another version of neigh_lookup_noref. We currently have __ipv4_lookup_noref and __ipv6_lookup_noref. So to make my work a little easier and to make it a smidge easier to verify/maintain the mpls code in the future I stopped and wrote ___neigh_lookup_noref. Then I rewote __ipv4_lookup_noref and __ipv6_lookup_noref in terms of this new function. I tested my new version by verifying that the same code is generated in ip_finish_output2 and ip6_finish_output2 where these functions are inlined. To get to ___neigh_lookup_noref I added a new neighbour cache table function key_eq. So that the static size of the key would be available. I also added __neigh_lookup_noref for people who want to to lookup a neighbour table entry quickly but don't know which neibhgour table they are going to look up. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03 17:10:44 -06:00
net ipv6: Prevent neighbor add if protocol is disabled on device Disabling IPv6 on an interface removes existing entries but nothing prevents new entries from being manually added. To that end, add a new neigh_table operation, allow_add, that is called on RTM_NEWNEIGH to see if neighbor entries are allowed on a given device. If IPv6 is disabled on the device, allow_add returns false and passes a message back to the user via extack. $ echo 1 > /proc/sys/net/ipv6/conf/eth1/disable_ipv6 $ ip -6 neigh add fe80::4c88:bff:fe21:2704 dev eth1 lladdr de:ad:be:ef:01:01 Error: IPv6 is disabled on this device. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-16 17:31:43 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: Exempt multicast addresses from five-second neighbor lifetime Commit 58956317c8de ("neighbor: Improve garbage collection") guarantees neighbour table entries a five-second lifetime. Processes which make heavy use of multicast can fill the neighour table with multicast addresses in five seconds. At that point, neighbour entries can't be GC-ed because they aren't five seconds old yet, the kernel log starts to fill up with "neighbor table overflow!" messages, and sends start to fail. This patch allows multicast addresses to be thrown out before they've lived out their five seconds. This makes room for non-multicast addresses and makes messages to all addresses more reliable in these circumstances. Fixes: 58956317c8de ("neighbor: Improve garbage collection") Signed-off-by: Jeff Dike <jdike@akamai.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20201113015815.31397-1-jdike@akamai.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 20:58:15 -05:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: make neigh_ops constant These tables are never modified at runtime. Move to read-only section. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 11:13:19 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: make neigh_ops constant These tables are never modified at runtime. Move to read-only section. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 11:13:19 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: make neigh_ops constant These tables are never modified at runtime. Move to read-only section. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 11:13:19 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: Pass neighbour entry to output ops. This will get us closer to being able to do "neigh stuff" completely independent of the underlying dst_entry for protocols (ipv4/ipv6) that wish to do so. We will also be able to make dst entries neigh-less. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17 13:34:11 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: Don't require dst in neigh_hh_init - Add protocol to neigh_tbl so that dst->ops->protocol is not needed - Acquire the device from neigh->dev This results in a neigh_hh_init that will cache the samve values regardless of the packets flowing through it. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-02 00:13:22 -06:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: Factor out ___neigh_lookup_noref While looking at the mpls code I found myself writing yet another version of neigh_lookup_noref. We currently have __ipv4_lookup_noref and __ipv6_lookup_noref. So to make my work a little easier and to make it a smidge easier to verify/maintain the mpls code in the future I stopped and wrote ___neigh_lookup_noref. Then I rewote __ipv4_lookup_noref and __ipv6_lookup_noref in terms of this new function. I tested my new version by verifying that the same code is generated in ip_finish_output2 and ip6_finish_output2 where these functions are inlined. To get to ___neigh_lookup_noref I added a new neighbour cache table function key_eq. So that the static size of the key would be available. I also added __neigh_lookup_noref for people who want to to lookup a neighbour table entry quickly but don't know which neibhgour table they are going to look up. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03 17:10:44 -06:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: Exempt multicast addresses from five-second neighbor lifetime Commit 58956317c8de ("neighbor: Improve garbage collection") guarantees neighbour table entries a five-second lifetime. Processes which make heavy use of multicast can fill the neighour table with multicast addresses in five seconds. At that point, neighbour entries can't be GC-ed because they aren't five seconds old yet, the kernel log starts to fill up with "neighbor table overflow!" messages, and sends start to fail. This patch allows multicast addresses to be thrown out before they've lived out their five seconds. This makes room for non-multicast addresses and makes messages to all addresses more reliable in these circumstances. Fixes: 58956317c8de ("neighbor: Improve garbage collection") Signed-off-by: Jeff Dike <jdike@akamai.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20201113015815.31397-1-jdike@akamai.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 20:58:15 -05:00
net ipv6: Prevent neighbor add if protocol is disabled on device Disabling IPv6 on an interface removes existing entries but nothing prevents new entries from being manually added. To that end, add a new neigh_table operation, allow_add, that is called on RTM_NEWNEIGH to see if neighbor entries are allowed on a given device. If IPv6 is disabled on the device, allow_add returns false and passes a message back to the user via extack. $ echo 1 > /proc/sys/net/ipv6/conf/eth1/disable_ipv6 $ ip -6 neigh add fe80::4c88:bff:fe21:2704 dev eth1 lladdr de:ad:be:ef:01:01 Error: IPv6 is disabled on this device. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-16 17:31:43 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: use ND_REACHABLE_TIME and ND_RETRANS_TIMER instead of magic number ND_REACHABLE_TIME and ND_RETRANS_TIMER have defined since v2.6.12-rc2, but never been used. So use them instead of magic number. This patch also changes original code style to read comfortably . Thank YOSHIFUJI Hideaki for pointing it out. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-01 18:05:12 +00:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
net, neigh: introduce interval_probe_time_ms for periodic probe commit ed6cd6a17896 ("net, neigh: Set lower cap for neigh_managed_work rearming") fixed a case when DELAY_PROBE_TIME is configured to 0, the processing of the system work queue hog CPU to 100%, and further more we should introduce a new option used by periodic probe Signed-off-by: Yuwei Wang <wangyuweihx@gmail.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-06-29 08:48:32 +00:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
net: set net.core.rmem_max and net.core.wmem_max to 4 MB SO_RCVBUF and SO_SNDBUF have limited range today, unless distros or system admins change rmem_max and wmem_max. Even iproute2 uses 1 MB SO_RCVBUF which is capped by the kernel. Decouple [rw]mem_max and [rw]mem_default and increase [rw]mem_max to 4 MB. Before: $ sysctl net.core.rmem_default net.core.rmem_max net.core.wmem_default net.core.wmem_max net.core.rmem_default = 212992 net.core.rmem_max = 212992 net.core.wmem_default = 212992 net.core.wmem_max = 212992 After: $ sysctl net.core.rmem_default net.core.rmem_max net.core.wmem_default net.core.wmem_max net.core.rmem_default = 212992 net.core.rmem_max = 4194304 net.core.wmem_default = 212992 net.core.wmem_max = 4194304 Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Link: https://patch.msgid.link/20250819174030.1986278-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-19 17:40:30 +00:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: Export fib6_get_table and nd_tbl Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-12 11:47:08 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: constify dev_addr passing In preparation for netdev->dev_addr being constant make all relevant arguments in ndisc constant. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-12 08:58:38 -07:00
ipv6: export several functions This patch exports some neighbour discovery functions which can be used by 6lowpan neighbour discovery ops functionality then. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:24 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: add __ndisc_fill_addr_option function This patch adds __ndisc_fill_addr_option as low-level function for ndisc_fill_addr_option which doesn't depend on net_device parameter. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:21 +02:00
ndisc: Make ndisc_fill_xxx_option() for sk_buff. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:53 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: coding style improvements (remove assignment in if statements) This change has no functional impact and simply addresses some coding style issues detected by checkpatch. Specifically this change adjusts "if" statements which also include the assignment of a variable. No changes to the resultant object files result as determined by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-23 21:28:43 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: export several functions This patch exports some neighbour discovery functions which can be used by 6lowpan neighbour discovery ops functionality then. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:24 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: add __ndisc_fill_addr_option function This patch adds __ndisc_fill_addr_option as low-level function for ndisc_fill_addr_option which doesn't depend on net_device parameter. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:21 +02:00
ipv6: constify dev_addr passing In preparation for netdev->dev_addr being constant make all relevant arguments in ndisc constant. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-12 08:58:38 -07:00
ndisc: add __ndisc_fill_addr_option function This patch adds __ndisc_fill_addr_option as low-level function for ndisc_fill_addr_option which doesn't depend on net_device parameter. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:21 +02:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ndisc: add __ndisc_fill_addr_option function This patch adds __ndisc_fill_addr_option as low-level function for ndisc_fill_addr_option which doesn't depend on net_device parameter. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:21 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
net: return operator cleanup Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-22 20:43:57 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: adjust ndisc_is_useropt() to also return true for PIO The upcoming (and nearly finalized): https://datatracker.ietf.org/doc/draft-collink-6man-pio-pflag/ will update the IPv6 RA to include a new flag in the PIO field, which will serve as a hint to perform DHCPv6-PD. As we don't want DHCPv6 related logic inside the kernel, this piece of information needs to be exposed to userspace. The simplest option is to simply expose the entire PIO through the already existing mechanism. Even without this new flag, the already existing PIO R (router address) flag (from RFC6275) cannot AFAICT be handled entirely in kernel, and provides useful information that should be exposed to userspace (the router's global address, for use by Mobile IPv6). Also cc'ing stable@ for inclusion in LTS, as while technically this is not quite a bugfix, and instead more of a feature, it is absolutely trivial and the alternative is manually cherrypicking into all Android Common Kernel trees - and I know Greg will ask for it to be sent in via LTS instead... Cc: Jen Linkova <furry@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Cc: stable@vger.kernel.org Signed-off-by: Maciej Żenczykowski <maze@google.com> Link: https://lore.kernel.org/r/20230807102533.1147559-1-maze@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-07 03:25:32 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6: eliminate ndisc_ops_is_useropt() as it doesn't seem to offer anything of value. There's only 1 trivial user: int lowpan_ndisc_is_useropt(u8 nd_opt_type) { return nd_opt_type == ND_OPT_6CO; } but there's no harm to always treating that as a useropt... Cc: David Ahern <dsahern@kernel.org> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Signed-off-by: Maciej Żenczykowski <maze@google.com> Link: https://patch.msgid.link/20240730003010.156977-1-maze@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-07-29 17:30:10 -07:00
net-ipv6-ndisc: add support for RFC7710 RA Captive Portal Identifier This is trivial since we already have support for the entirely identical (from the kernel's point of view) RDNSS and DNSSL that also contain opaque data that needs to be passed down to userspace. As specified in RFC7710, Captive Portal option contains a URL. 8-bit identifier of the option type as assigned by the IANA is 37. This option should also be treated as userland. Hence, treat ND option 37 as userland (Captive Portal support) See: https://tools.ietf.org/html/rfc7710 https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xhtml Fixes: e35f30c131a56 Signed-off-by: Maciej Żenczykowski <maze@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: Remin Nguyen Van <reminv@google.com> Cc: Alexey I. Froloff <raorn@raorn.name> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-18 23:30:03 -07:00
ipv6: eliminate ndisc_ops_is_useropt() as it doesn't seem to offer anything of value. There's only 1 trivial user: int lowpan_ndisc_is_useropt(u8 nd_opt_type) { return nd_opt_type == ND_OPT_6CO; } but there's no harm to always treating that as a useropt... Cc: David Ahern <dsahern@kernel.org> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Signed-off-by: Maciej Żenczykowski <maze@google.com> Link: https://patch.msgid.link/20240730003010.156977-1-maze@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-07-29 17:30:10 -07:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6: Export ndisc option parsing from ndisc.c This is going to be used internally by the rt6 redirect code. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11 23:26:46 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: fix ndisc_is_useropt() handling for PIO The current logic only works if the PIO is between two other ND user options. This fixes it so that the PIO can also be either before or after other ND user options (for example the first or last option in the RA). side note: there's actually Android tests verifying a portion of the old broken behaviour, so: https://android-review.googlesource.com/c/kernel/tests/+/3196704 fixes those up. Cc: Jen Linkova <furry@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: Patrick Rohr <prohr@google.com> Cc: David Ahern <dsahern@kernel.org> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Cc: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Maciej Żenczykowski <maze@google.com> Fixes: 048c796beb6e ("ipv6: adjust ndisc_is_useropt() to also return true for PIO") Link: https://patch.msgid.link/20240730001748.147636-1-maze@google.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-07-29 17:17:48 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET]: sparse warning fixes Fix a bunch of sparse warnings. Mostly about 0 used as NULL pointer, and shadowed variable declarations. One notable case was that hash size should have been unsigned. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:59:42 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: fix ndisc_is_useropt() handling for PIO The current logic only works if the PIO is between two other ND user options. This fixes it so that the PIO can also be either before or after other ND user options (for example the first or last option in the RA). side note: there's actually Android tests verifying a portion of the old broken behaviour, so: https://android-review.googlesource.com/c/kernel/tests/+/3196704 fixes those up. Cc: Jen Linkova <furry@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: Patrick Rohr <prohr@google.com> Cc: David Ahern <dsahern@kernel.org> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Cc: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Maciej Żenczykowski <maze@google.com> Fixes: 048c796beb6e ("ipv6: adjust ndisc_is_useropt() to also return true for PIO") Link: https://patch.msgid.link/20240730001748.147636-1-maze@google.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-07-29 17:17:48 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 04:53:02 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
IPoIB: improve IPv4/IPv6 to IB mcast mapping functions An IPoIB subnet on an IB fabric that spans multiple IB subnets can't use link-local scope in multicast GIDs. The existing routines that map IP/IPv6 multicast addresses into IB link-level addresses hard-code the scope to link-local, and they also leave the partition key field uninitialised. This patch adds a parameter (the link-level broadcast address) to the mapping routines, allowing them to initialise both the scope and the P_Key appropriately, and fixes up the call sites. The next step will be to add a way to configure the scope for an IPoIB interface. Signed-off-by: Rolf Manderscheid <rvm@obsidianresearch.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-12-10 13:38:41 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: gre: provide multicast mappings for ipv4 and ipv6 My commit 6d55cb91a0020ac0 (gre: fix hard header destination address checking) broke multicast. The reason is that ip_gre used to get ipgre_header() calls with zero destination if we have NOARP or multicast destination. Instead the actual target was decided at ipgre_tunnel_xmit() time based on per-protocol dissection. Instead of allowing the "abuse" of ->header() calls with invalid destination, this creates multicast mappings for ip_gre. This also fixes "ip neigh show nud noarp" to display the proper multicast mappings used by the gre device. Reported-by: Doug Kehn <rdkehn@yahoo.com> Signed-off-by: Timo Teräs <timo.teras@iki.fi> Acked-by: Doug Kehn <rdkehn@yahoo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-28 22:40:53 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: Decentralize EXPORT_SYMBOLs. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-02-22 22:05:40 +09:00
net neigh: RCU conversion of neigh hash table David This is the first step for RCU conversion of neigh code. Next patches will convert hash_buckets[] and "struct neighbour" to RCU protected objects. Thanks [PATCH net-next] net neigh: RCU conversion of neigh hash table Instead of storing hash_buckets, hash_mask and hash_rnd in "struct neigh_table", a new structure is defined : struct neigh_hash_table { struct neighbour **hash_buckets; unsigned int hash_mask; __u32 hash_rnd; struct rcu_head rcu; }; And "struct neigh_table" has an RCU protected pointer to such a neigh_hash_table. This means the signature of (*hash)() function changed: We need to add a third parameter with the actual hash_rnd value, since this is not anymore a neigh_table field. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-04 06:15:44 +00:00
ipv6: Use universal hash for NDISC. In order to perform a proper universal hash on a vector of integers, we have to use different universal hashes on each vector element. Which means we need 4 different hash randoms for ipv6. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-28 15:06:58 -05:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Use universal hash for NDISC. In order to perform a proper universal hash on a vector of integers, we have to use different universal hashes on each vector element. Which means we need 4 different hash randoms for ipv6. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-28 15:06:58 -05:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: Factor out ___neigh_lookup_noref While looking at the mpls code I found myself writing yet another version of neigh_lookup_noref. We currently have __ipv4_lookup_noref and __ipv6_lookup_noref. So to make my work a little easier and to make it a smidge easier to verify/maintain the mpls code in the future I stopped and wrote ___neigh_lookup_noref. Then I rewote __ipv4_lookup_noref and __ipv6_lookup_noref in terms of this new function. I tested my new version by verifying that the same code is generated in ip_finish_output2 and ip6_finish_output2 where these functions are inlined. To get to ___neigh_lookup_noref I added a new neighbour cache table function key_eq. So that the static size of the key would be available. I also added __neigh_lookup_noref for people who want to to lookup a neighbour table entry quickly but don't know which neibhgour table they are going to look up. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03 17:10:44 -06:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: bool/const conversions phase2 Mostly bool conversions, some inline removals and const additions. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-18 18:57:34 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET]: Move hardware header operations out of netdevice. Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:40:57 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: Pass neighbour entry to output ops. This will get us closer to being able to do "neigh stuff" completely independent of the underlying dst_entry for protocols (ipv4/ipv6) that wish to do so. We will also be able to make dst entries neigh-less. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17 13:34:11 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET]: Move hardware header operations out of netdevice. Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:40:57 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}(). ipv6_dev_mc_{inc,dec}() has the same check. Let's remove __in6_dev_get() from pndisc_constructor() and pndisc_destructor(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250702230210.3115355-2-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 16:01:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net ipv6: Prevent neighbor add if protocol is disabled on device Disabling IPv6 on an interface removes existing entries but nothing prevents new entries from being manually added. To that end, add a new neigh_table operation, allow_add, that is called on RTM_NEWNEIGH to see if neighbor entries are allowed on a given device. If IPv6 is disabled on the device, allow_add returns false and passes a message back to the user via extack. $ echo 1 > /proc/sys/net/ipv6/conf/eth1/disable_ipv6 $ ip -6 neigh add fe80::4c88:bff:fe21:2704 dev eth1 lladdr de:ad:be:ef:01:01 Error: IPv6 is disabled on this device. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-16 17:31:43 -07:00
ndisc: Introduce ndisc_alloc_skb() helper. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:14 +00:00
ipv6: Don't depend on per socket memory for neighbour discovery messages Allocating skbs when sending out neighbour discovery messages currently uses sock_alloc_send_skb() based on a per net namespace socket and thus share a socket wmem buffer space. If a netdevice is temporarily unable to transmit due to carrier loss or for other reasons, the queued up ndisc messages will cosnume all of the wmem space and will thus prevent from any more skbs to be allocated even for netdevices that are able to transmit packets. The number of neighbour discovery messages sent is very limited, use of alloc_skb() bypasses the socket wmem buffer size enforcement while the manual call to skb_set_owner_w() maintains the socket reference needed for the IPv6 output path. This patch has orginally been posted by Eric Dumazet in a modified form. Signed-off-by: Thomas Graf <tgraf@suug.ch> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Fabio Estevam <festevam@gmail.com> Tested-by: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-03 13:37:01 +02:00
ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF. Fixes: de09334b9326 ("ndisc: Introduce ndisc_alloc_skb() helper.") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250207135841.1948589-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-07 13:58:34 +00:00
ndisc: Introduce ndisc_alloc_skb() helper. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:14 +00:00
ndisc: Set skb->dev and skb->protocol inside ndisc_alloc_skb(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:29 +00:00
ndisc: Defer building IPv6 header. Build ICMPv6 message first and make buffer management easier; we can use skb->len when filling checksum in ICMPv6 header, and then build IP header with length field. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:39 +00:00
ndisc: Reset skb->trasport_headner inside ndisc_alloc_send_skb(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:44 +00:00
ndisc: Introduce ndisc_alloc_skb() helper. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:14 +00:00
ipv6: Don't depend on per socket memory for neighbour discovery messages Allocating skbs when sending out neighbour discovery messages currently uses sock_alloc_send_skb() based on a per net namespace socket and thus share a socket wmem buffer space. If a netdevice is temporarily unable to transmit due to carrier loss or for other reasons, the queued up ndisc messages will cosnume all of the wmem space and will thus prevent from any more skbs to be allocated even for netdevices that are able to transmit packets. The number of neighbour discovery messages sent is very limited, use of alloc_skb() bypasses the socket wmem buffer size enforcement while the manual call to skb_set_owner_w() maintains the socket reference needed for the IPv6 output path. This patch has orginally been posted by Eric Dumazet in a modified form. Signed-off-by: Thomas Graf <tgraf@suug.ch> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Fabio Estevam <festevam@gmail.com> Tested-by: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-03 13:37:01 +02:00
ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF. Fixes: de09334b9326 ("ndisc: Introduce ndisc_alloc_skb() helper.") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250207135841.1948589-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-07 13:58:34 +00:00
ipv6: Don't depend on per socket memory for neighbour discovery messages Allocating skbs when sending out neighbour discovery messages currently uses sock_alloc_send_skb() based on a per net namespace socket and thus share a socket wmem buffer space. If a netdevice is temporarily unable to transmit due to carrier loss or for other reasons, the queued up ndisc messages will cosnume all of the wmem space and will thus prevent from any more skbs to be allocated even for netdevices that are able to transmit packets. The number of neighbour discovery messages sent is very limited, use of alloc_skb() bypasses the socket wmem buffer size enforcement while the manual call to skb_set_owner_w() maintains the socket reference needed for the IPv6 output path. This patch has orginally been posted by Eric Dumazet in a modified form. Signed-off-by: Thomas Graf <tgraf@suug.ch> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Fabio Estevam <festevam@gmail.com> Tested-by: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-03 13:37:01 +02:00
ndisc: Introduce ndisc_alloc_skb() helper. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:14 +00:00
ndisc: Set skb->dev and skb->protocol inside ndisc_alloc_skb(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:29 +00:00
ipv6: Unshare ip6_nd_hdr() and change return type to void. - move ip6_nd_hdr() to its users' source files. In net/ipv6/mcast.c, it will be called ip6_mc_hdr(). - make return type to void since this function never fails. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:19 +00:00
ndisc: Simplify arguments for ip6_nd_hdr(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:24 +00:00
ipv6: Unshare ip6_nd_hdr() and change return type to void. - move ip6_nd_hdr() to its users' source files. In net/ipv6/mcast.c, it will be called ip6_mc_hdr(). - make return type to void since this function never fails. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:19 +00:00
net: ipv6: sysctl to specify IPv6 ND traffic class Add a per-device sysctl to specify the default traffic class to use for kernel originated IPv6 Neighbour Discovery packets. Currently this includes: - Router Solicitation (ICMPv6 type 133) ndisc_send_rs() -> ndisc_send_skb() -> ip6_nd_hdr() - Neighbour Solicitation (ICMPv6 type 135) ndisc_send_ns() -> ndisc_send_skb() -> ip6_nd_hdr() - Neighbour Advertisement (ICMPv6 type 136) ndisc_send_na() -> ndisc_send_skb() -> ip6_nd_hdr() - Redirect (ICMPv6 type 137) ndisc_send_redirect() -> ndisc_send_skb() -> ip6_nd_hdr() and if the kernel ever gets around to generating RA's, it would presumably also include: - Router Advertisement (ICMPv6 type 134) (radvd daemon could pick up on the kernel setting and use it) Interface drivers may examine the Traffic Class value and translate the DiffServ Code Point into a link-layer appropriate traffic prioritization scheme. An example of mapping IETF DSCP values to IEEE 802.11 User Priority values can be found here: https://tools.ietf.org/html/draft-ietf-tsvwg-ieee-802-11 The expected primary use case is to properly prioritize ND over wifi. Testing: jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 0 jzem22:~# echo -1 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass -bash: echo: write error: Invalid argument jzem22:~# echo 256 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass -bash: echo: write error: Invalid argument jzem22:~# echo 0 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# echo 255 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 255 jzem22:~# echo 34 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 34 jzem22:~# echo $[0xDC] > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# tcpdump -v -i eth0 icmp6 and src host jzem22.pgc and dst host fe80::1 tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes IP6 (class 0xdc, hlim 255, next-header ICMPv6 (58) payload length: 24) jzem22.pgc > fe80::1: [icmp6 sum ok] ICMP6, neighbor advertisement, length 24, tgt is jzem22.pgc, Flags [solicited] (based on original change written by Erik Kline, with minor changes) v2: fix 'suspicious rcu_dereference_check() usage' by explicitly grabbing the rcu_read_lock. Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Erik Kline <ek@google.com> Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-07 21:52:09 -08:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
net: ipv6: sysctl to specify IPv6 ND traffic class Add a per-device sysctl to specify the default traffic class to use for kernel originated IPv6 Neighbour Discovery packets. Currently this includes: - Router Solicitation (ICMPv6 type 133) ndisc_send_rs() -> ndisc_send_skb() -> ip6_nd_hdr() - Neighbour Solicitation (ICMPv6 type 135) ndisc_send_ns() -> ndisc_send_skb() -> ip6_nd_hdr() - Neighbour Advertisement (ICMPv6 type 136) ndisc_send_na() -> ndisc_send_skb() -> ip6_nd_hdr() - Redirect (ICMPv6 type 137) ndisc_send_redirect() -> ndisc_send_skb() -> ip6_nd_hdr() and if the kernel ever gets around to generating RA's, it would presumably also include: - Router Advertisement (ICMPv6 type 134) (radvd daemon could pick up on the kernel setting and use it) Interface drivers may examine the Traffic Class value and translate the DiffServ Code Point into a link-layer appropriate traffic prioritization scheme. An example of mapping IETF DSCP values to IEEE 802.11 User Priority values can be found here: https://tools.ietf.org/html/draft-ietf-tsvwg-ieee-802-11 The expected primary use case is to properly prioritize ND over wifi. Testing: jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 0 jzem22:~# echo -1 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass -bash: echo: write error: Invalid argument jzem22:~# echo 256 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass -bash: echo: write error: Invalid argument jzem22:~# echo 0 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# echo 255 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 255 jzem22:~# echo 34 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 34 jzem22:~# echo $[0xDC] > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# tcpdump -v -i eth0 icmp6 and src host jzem22.pgc and dst host fe80::1 tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes IP6 (class 0xdc, hlim 255, next-header ICMPv6 (58) payload length: 24) jzem22.pgc > fe80::1: [icmp6 sum ok] ICMP6, neighbor advertisement, length 24, tgt is jzem22.pgc, Flags [solicited] (based on original change written by Erik Kline, with minor changes) v2: fix 'suspicious rcu_dereference_check() usage' by explicitly grabbing the rcu_read_lock. Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Erik Kline <ek@google.com> Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-07 21:52:09 -08:00
ipv6: Unshare ip6_nd_hdr() and change return type to void. - move ip6_nd_hdr() to its users' source files. In net/ipv6/mcast.c, it will be called ip6_mc_hdr(). - make return type to void since this function never fails. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:19 +00:00
ndisc: Defer building IPv6 header. Build ICMPv6 message first and make buffer management easier; we can use skb->len when filling checksum in ICMPv6 header, and then build IP header with length field. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:39 +00:00
ipv6: Unshare ip6_nd_hdr() and change return type to void. - move ip6_nd_hdr() to its users' source files. In net/ipv6/mcast.c, it will be called ip6_mc_hdr(). - make return type to void since this function never fails. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:19 +00:00
net: ipv6: sysctl to specify IPv6 ND traffic class Add a per-device sysctl to specify the default traffic class to use for kernel originated IPv6 Neighbour Discovery packets. Currently this includes: - Router Solicitation (ICMPv6 type 133) ndisc_send_rs() -> ndisc_send_skb() -> ip6_nd_hdr() - Neighbour Solicitation (ICMPv6 type 135) ndisc_send_ns() -> ndisc_send_skb() -> ip6_nd_hdr() - Neighbour Advertisement (ICMPv6 type 136) ndisc_send_na() -> ndisc_send_skb() -> ip6_nd_hdr() - Redirect (ICMPv6 type 137) ndisc_send_redirect() -> ndisc_send_skb() -> ip6_nd_hdr() and if the kernel ever gets around to generating RA's, it would presumably also include: - Router Advertisement (ICMPv6 type 134) (radvd daemon could pick up on the kernel setting and use it) Interface drivers may examine the Traffic Class value and translate the DiffServ Code Point into a link-layer appropriate traffic prioritization scheme. An example of mapping IETF DSCP values to IEEE 802.11 User Priority values can be found here: https://tools.ietf.org/html/draft-ietf-tsvwg-ieee-802-11 The expected primary use case is to properly prioritize ND over wifi. Testing: jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 0 jzem22:~# echo -1 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass -bash: echo: write error: Invalid argument jzem22:~# echo 256 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass -bash: echo: write error: Invalid argument jzem22:~# echo 0 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# echo 255 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 255 jzem22:~# echo 34 > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# cat /proc/sys/net/ipv6/conf/eth0/ndisc_tclass 34 jzem22:~# echo $[0xDC] > /proc/sys/net/ipv6/conf/eth0/ndisc_tclass jzem22:~# tcpdump -v -i eth0 icmp6 and src host jzem22.pgc and dst host fe80::1 tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes IP6 (class 0xdc, hlim 255, next-header ICMPv6 (58) payload length: 24) jzem22.pgc > fe80::1: [icmp6 sum ok] ICMP6, neighbor advertisement, length 24, tgt is jzem22.pgc, Flags [solicited] (based on original change written by Erik Kline, with minor changes) v2: fix 'suspicious rcu_dereference_check() usage' by explicitly grabbing the rcu_read_lock. Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Erik Kline <ek@google.com> Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-07 21:52:09 -08:00
ipv6: Unshare ip6_nd_hdr() and change return type to void. - move ip6_nd_hdr() to its users' source files. In net/ipv6/mcast.c, it will be called ip6_mc_hdr(). - make return type to void since this function never fails. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:19 +00:00
ndisc: Simplify arguments for ip6_nd_hdr(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:24 +00:00
ipv6: Unshare ip6_nd_hdr() and change return type to void. - move ip6_nd_hdr() to its users' source files. In net/ipv6/mcast.c, it will be called ip6_mc_hdr(). - make return type to void since this function never fails. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:19 +00:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
bonding: send IPv6 neighbor advertisement on failover This patch adds better IPv6 failover support for bonding devices, especially when in active-backup mode and there are only IPv6 addresses configured, as reported by Alex Sidorenko. - Creates a new file, net/drivers/bonding/bond_ipv6.c, for the IPv6-specific routines. Both regular bonds and VLANs over bonds are supported. - Adds a new tunable, num_unsol_na, to limit the number of unsolicited IPv6 Neighbor Advertisements that are sent on a failover event. Default is 1. - Creates two new IPv6 neighbor discovery functions: ndisc_build_skb() ndisc_send_skb() These were required to support VLANs since we have to be able to add the VLAN id to the skb since ndisc_send_na() and friends shouldn't be asked to do this. These two routines are basically __ndisc_send() split into two pieces, in a slightly different order. - Updates Documentation/networking/bonding.txt and bumps the rev of bond support to 3.4.0. On failover, this new code will generate one packet: - An unsolicited IPv6 Neighbor Advertisement, which helps the switch learn that the address has moved to the new slave. Testing has shown that sending just the NA results in pretty good behavior when in active-back mode, I saw no lost ping packets for example. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-04 17:51:14 -08:00
ndisc: Remove icmp6h argument from ndisc_send_skb(). skb_transport_header() (thus icmp6_hdr()) is available here, use it. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:58 +00:00
ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF. Fixes: 1762f7e88eb3 ("[NETNS][IPV6] ndisc - make socket control per namespace") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250207135841.1948589-8-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-07 13:58:39 +00:00
ipv6: adopt dst_dev() helper Use the new helper as a step to deal with potential dst->dev races. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250630121934.3399505-9-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-30 12:19:32 +00:00
ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF. Fixes: 1762f7e88eb3 ("[NETNS][IPV6] ndisc - make socket control per namespace") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250207135841.1948589-8-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-07 13:58:39 +00:00
bonding: send IPv6 neighbor advertisement on failover This patch adds better IPv6 failover support for bonding devices, especially when in active-backup mode and there are only IPv6 addresses configured, as reported by Alex Sidorenko. - Creates a new file, net/drivers/bonding/bond_ipv6.c, for the IPv6-specific routines. Both regular bonds and VLANs over bonds are supported. - Adds a new tunable, num_unsol_na, to limit the number of unsolicited IPv6 Neighbor Advertisements that are sent on a failover event. Default is 1. - Creates two new IPv6 neighbor discovery functions: ndisc_build_skb() ndisc_send_skb() These were required to support VLANs since we have to be able to add the VLAN id to the skb since ndisc_send_na() and friends shouldn't be asked to do this. These two routines are basically __ndisc_send() split into two pieces, in a slightly different order. - Updates Documentation/networking/bonding.txt and bumps the rev of bond support to 3.4.0. On failover, this new code will generate one packet: - An unsolicited IPv6 Neighbor Advertisement, which helps the switch learn that the address has moved to the new slave. Testing has shown that sending just the NA results in pretty good behavior when in active-back mode, I saw no lost ping packets for example. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-04 17:51:14 -08:00
ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF. Fixes: 1762f7e88eb3 ("[NETNS][IPV6] ndisc - make socket control per namespace") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250207135841.1948589-8-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-07 13:58:39 +00:00
ndisc: Use ndisc_send_skb() for redirect. Reuse dst if one is attached with skb. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:03 +00:00
net: l3mdev: remove redundant calls A previous patch added l3mdev flow update making these hooks redundant. Remove them. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-10 12:09:57 -07:00
bonding: send IPv6 neighbor advertisement on failover This patch adds better IPv6 failover support for bonding devices, especially when in active-backup mode and there are only IPv6 addresses configured, as reported by Alex Sidorenko. - Creates a new file, net/drivers/bonding/bond_ipv6.c, for the IPv6-specific routines. Both regular bonds and VLANs over bonds are supported. - Adds a new tunable, num_unsol_na, to limit the number of unsolicited IPv6 Neighbor Advertisements that are sent on a failover event. Default is 1. - Creates two new IPv6 neighbor discovery functions: ndisc_build_skb() ndisc_send_skb() These were required to support VLANs since we have to be able to add the VLAN id to the skb since ndisc_send_na() and friends shouldn't be asked to do this. These two routines are basically __ndisc_send() split into two pieces, in a slightly different order. - Updates Documentation/networking/bonding.txt and bumps the rev of bond support to 3.4.0. On failover, this new code will generate one packet: - An unsolicited IPv6 Neighbor Advertisement, which helps the switch learn that the address has moved to the new slave. Testing has shown that sending just the NA results in pretty good behavior when in active-back mode, I saw no lost ping packets for example. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-04 17:51:14 -08:00
net: Add VRF support to IPv6 stack As with IPv4 support for VRFs added to IPv6 stack by replacing hardcoded table ids with possibly device specific ones and manipulating the oif in the flowi6. The flow flags are used to skip oif compare in nexthop lookups if the device is enslaved to a VRF via the L3 master device. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-12 11:47:10 -07:00
ndisc: Use ndisc_send_skb() for redirect. Reuse dst if one is attached with skb. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:03 +00:00
ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF. Fixes: 1762f7e88eb3 ("[NETNS][IPV6] ndisc - make socket control per namespace") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250207135841.1948589-8-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-07 13:58:39 +00:00
ndisc: Use ndisc_send_skb() for redirect. Reuse dst if one is attached with skb. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:03 +00:00
[IPV6] NDISC: Unify main process of sending ND messages. Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs() are almost identical, so let's unify their common part. With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386, Before: text data bss dec hex filename 14689 364 24 15077 3ae5 net/ipv6/ndisc.o After: text data bss dec hex filename 12317 364 24 12705 31a1 net/ipv6/ndisc.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-04-24 20:44:52 +09:00
ndisc: Fill in ICMPv6 checksum and IPv6 header in ndisc_send_skb(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:08 +00:00
ipv6: lockless IPV6_UNICAST_HOPS implementation Some np->hop_limit accesses are racy, when socket lock is not held. Add missing annotations and switch to full lockless implementation. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-12 16:01:59 +00:00
ndisc: Fill in ICMPv6 checksum and IPv6 header in ndisc_send_skb(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:08 +00:00
ipv6: start using dst_dev_rcu() Refactor icmpv6_xrlim_allow() and ip6_dst_hoplimit() so that we acquire rcu_read_lock() a bit longer to be able to use dst_dev_rcu() instead of dst_dev(). __ip6_rt_update_pmtu() and rt6_do_redirect can directly use dst_dev_rcu() in sections already holding rcu_read_lock(). Small changes to use dst_dev_net_rcu() in ip6_default_advmss(), ipv6_sock_ac_join(), ip6_mc_find_dev() and ndisc_send_skb(). Fixes: 4a6ce2b6f2ec ("net: introduce a new function dst_dev_put()") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250828195823.3958522-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-28 19:58:17 +00:00
ipv6: adopt dst_dev() helper Use the new helper as a step to deal with potential dst->dev races. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250630121934.3399505-9-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-30 12:19:32 +00:00
net: fix IPSTATS_MIB_OUTPKGS increment in OutForwDatagrams. Reproduce environment: network with 3 VM linuxs is connected as below: VM1<---->VM2(latest kernel 6.5.0-rc7)<---->VM3 VM1: eth0 ip: 192.168.122.207 MTU 1500 VM2: eth0 ip: 192.168.122.208, eth1 ip: 192.168.123.224 MTU 1500 VM3: eth0 ip: 192.168.123.240 MTU 1500 Reproduce: VM1 send 1400 bytes UDP data to VM3 using tools scapy with flags=0. scapy command: send(IP(dst="192.168.123.240",flags=0)/UDP()/str('0'*1400),count=1, inter=1.000000) Result: Before IP data is sent. ---------------------------------------------------------------------- root@qemux86-64:~# cat /proc/net/snmp Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates Ip: 1 64 11 0 3 4 0 0 4 7 0 0 0 0 0 0 0 0 0 ...... ---------------------------------------------------------------------- After IP data is sent. ---------------------------------------------------------------------- root@qemux86-64:~# cat /proc/net/snmp Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates Ip: 1 64 12 0 3 5 0 0 4 8 0 0 0 0 0 0 0 0 0 ...... ---------------------------------------------------------------------- "ForwDatagrams" increase from 4 to 5 and "OutRequests" also increase from 7 to 8. Issue description and patch: IPSTATS_MIB_OUTPKTS("OutRequests") is counted with IPSTATS_MIB_OUTOCTETS ("OutOctets") in ip_finish_output2(). According to RFC 4293, it is "OutOctets" counted with "OutTransmits" but not "OutRequests". "OutRequests" does not include any datagrams counted in "ForwDatagrams". ipSystemStatsOutOctets OBJECT-TYPE DESCRIPTION "The total number of octets in IP datagrams delivered to the lower layers for transmission. Octets from datagrams counted in ipIfStatsOutTransmits MUST be counted here. ipSystemStatsOutRequests OBJECT-TYPE DESCRIPTION "The total number of IP datagrams that local IP user- protocols (including ICMP) supplied to IP in requests for transmission. Note that this counter does not include any datagrams counted in ipSystemStatsOutForwDatagrams. So do patch to define IPSTATS_MIB_OUTPKTS to "OutTransmits" and add IPSTATS_MIB_OUTREQUESTS for "OutRequests". Add IPSTATS_MIB_OUTREQUESTS counter in __ip_local_out() for ipv4 and add IPSTATS_MIB_OUT counter in ip6_finish_output2() for ipv6. Test result with patch: Before IP data is sent. ---------------------------------------------------------------------- root@qemux86-64:~# cat /proc/net/snmp Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates OutTransmits Ip: 1 64 9 0 5 1 0 0 3 3 0 0 0 0 0 0 0 0 0 4 ...... root@qemux86-64:~# cat /proc/net/netstat ...... IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets InBcastOctets OutBcastOctets InCsumErrors InNoECTPkts InECT1Pkts InECT0Pkts InCEPkts ReasmOverlaps IpExt: 0 0 0 0 0 0 2976 1896 0 0 0 0 0 9 0 0 0 0 ---------------------------------------------------------------------- After IP data is sent. ---------------------------------------------------------------------- root@qemux86-64:~# cat /proc/net/snmp Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates OutTransmits Ip: 1 64 10 0 5 2 0 0 3 3 0 0 0 0 0 0 0 0 0 5 ...... root@qemux86-64:~# cat /proc/net/netstat ...... IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets InBcastOctets OutBcastOctets InCsumErrors InNoECTPkts InECT1Pkts InECT0Pkts InCEPkts ReasmOverlaps IpExt: 0 0 0 0 0 0 4404 3324 0 0 0 0 0 10 0 0 0 0 ---------------------------------------------------------------------- "ForwDatagrams" increase from 1 to 2 and "OutRequests" is keeping 3. "OutTransmits" increase from 4 to 5 and "OutOctets" increase 1428. Signed-off-by: Heng Guo <heng.guo@windriver.com> Reviewed-by: Kun Song <Kun.Song@windriver.com> Reviewed-by: Filip Pudak <filip.pudak@windriver.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-19 09:20:53 +08:00
[IPV6] NDISC: Unify main process of sending ND messages. Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs() are almost identical, so let's unify their common part. With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386, Before: text data bss dec hex filename 14689 364 24 15077 3ae5 net/ipv6/ndisc.o After: text data bss dec hex filename 12317 364 24 12705 31a1 net/ipv6/ndisc.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-04-24 20:44:52 +09:00
netfilter: Pass struct net into the netfilter hooks Pass a network namespace parameter into the netfilter hooks. At the call site of the netfilter hooks the path a packet is taking through the network stack is well known which allows the network namespace to be easily and reliabily. This allows the replacement of magic code like "dev_net(state->in?:state->out)" that appears at the start of most netfilter hooks with "state->net". In almost all cases the network namespace passed in is derived from the first network device passed in, guaranteeing those paths will not see any changes in practice. The exceptions are: xfrm/xfrm_output.c:xfrm_output_resume() xs_net(skb_dst(skb)->xfrm) ipvs/ip_vs_xmit.c:ip_vs_nat_send_or_cont() ip_vs_conn_net(cp) ipvs/ip_vs_xmit.c:ip_vs_send_or_cont() ip_vs_conn_net(cp) ipv4/raw.c:raw_send_hdrinc() sock_net(sk) ipv6/ip6_output.c:ip6_xmit() sock_net(sk) ipv6/ndisc.c:ndisc_send_skb() dev_net(skb->dev) not dev_net(dst->dev) ipv6/raw.c:raw6_send_hdrinc() sock_net(sk) br_netfilter_hooks.c:br_nf_pre_routing_finish() dev_net(skb->dev) before skb->dev is set to nf_bridge->physindev In all cases these exceptions seem to be a better expression for the network namespace the packet is being processed in then the historic "dev_net(in?in:out)". I am documenting them in case something odd pops up and someone starts trying to track down what happened. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-15 20:04:16 -05:00
ipv6: adopt dst_dev() helper Use the new helper as a step to deal with potential dst->dev races. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250630121934.3399505-9-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-30 12:19:32 +00:00
net: Pass net into dst_output and remove dst_output_okfn Replace dst_output_okfn with dst_output Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-07 16:48:35 -05:00
[IPV6] NDISC: Unify main process of sending ND messages. Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs() are almost identical, so let's unify their common part. With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386, Before: text data bss dec hex filename 14689 364 24 15077 3ae5 net/ipv6/ndisc.o After: text data bss dec hex filename 12317 364 24 12705 31a1 net/ipv6/ndisc.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-04-24 20:44:52 +09:00
ipv6: added net argument to ICMP6MSGOUT_INC_STATS Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 10:33:50 -07:00
ipv6: added net argument to ICMP6_INC_STATS Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 10:33:06 -07:00
[IPV6] NDISC: Unify main process of sending ND messages. Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs() are almost identical, so let's unify their common part. With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386, Before: text data bss dec hex filename 14689 364 24 15077 3ae5 net/ipv6/ndisc.o After: text data bss dec hex filename 12317 364 24 12705 31a1 net/ipv6/ndisc.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-04-24 20:44:52 +09:00
ipv6: some RCU conversions ICMP and ND are not fast path, but still we can avoid changing idev refcount, using RCU. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 21:13:03 +00:00
[IPV6] NDISC: Unify main process of sending ND messages. Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs() are almost identical, so let's unify their common part. With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386, Before: text data bss dec hex filename 14689 364 24 15077 3ae5 net/ipv6/ndisc.o After: text data bss dec hex filename 12317 364 24 12705 31a1 net/ipv6/ndisc.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-04-24 20:44:52 +09:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
[IPV6] NDISC: Unify main process of sending ND messages. Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs() are almost identical, so let's unify their common part. With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386, Before: text data bss dec hex filename 14689 364 24 15077 3ae5 net/ipv6/ndisc.o After: text data bss dec hex filename 12317 364 24 12705 31a1 net/ipv6/ndisc.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-04-24 20:44:52 +09:00
ipv6: remove unused neigh parameter from ndisc functions Since commit 12fd84f4383b1 ("ipv6: Remove unused neigh argument for icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na and ndisc_send_ns is unused. CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-22 18:57:13 +02:00
vxlan: add ipv6 proxy support This patch adds the IPv6 version of "arp_reduce", ndisc_send_na() will be needed. Cc: David S. Miller <davem@davemloft.net> Cc: David Stevens <dlstevens@us.ibm.com> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-31 13:44:36 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: Make address arguments const. - net/ipv6/addrconf.c: ipv6_get_ifaddr(), ipv6_dev_get_saddr() - net/ipv6/mcast.c: ipv6_sock_mc_join(), ipv6_sock_mc_drop(), inet6_mc_check(), ipv6_dev_mc_inc(), __ipv6_dev_mc_dec(), ipv6_dev_mc_dec(), ipv6_chk_mcast_addr() - net/ipv6/route.c: rt6_lookup(), icmp6_dst_alloc() - net/ipv6/ip6_output.c: ip6_nd_hdr() - net/ipv6/ndisc.c: ndisc_send_ns(), ndisc_send_rs(), ndisc_send_redirect(), ndisc_get_neigh(), __ndisc_send() Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-10 15:42:10 +09:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
ndisc: bool initializations should use true and false Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-13 11:26:51 +03:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr() ipv6_dev_get_saddr() blindly de-references dst_dev to get the network namespace, but some callers might pass NULL. Change callers to pass a namespace pointer instead. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-14 15:33:21 -07:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
[IPV6]: Support Source Address Selection API (RFC5014). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 09:37:42 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: ndisc: use true and false for boolean values Assign true or false to boolean variables instead of an integer value. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-05 16:11:54 -06:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
networking: make skb_put & friends return void pointers It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 14:29:21 +02:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
ipv6: prepare headers for ipv6_stub removal In preparation for dropping ipv6_stub and converting its users to direct function calls, introduce static inline dummy functions and fallback macros in the IPv6 networking headers. In addition, introduce checks on fib6_nh_init(), ip6_dst_lookup_flow() and ip6_fragment() to avoid a crash due to ipv6.disable=1 set during booting. The other functions are safe as they cannot be called with ipv6.disable=1 set. These fallbacks ensure that when CONFIG_IPV6 is completely disabled, there are no compiling or linking errors due to code paths not guarded by preprocessor macro IS_ENABLED(CONFIG_IPV6). In addition, export ndisc_send_na(), ip6_route_input() and ip6_fragment(). Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de> Tested-by: Ricardo B. Marlière <rbm@suse.com> Link: https://patch.msgid.link/20260325120928.15848-6-fmancera@suse.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-25 13:08:46 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Send unsolicited neighbour advertismements when notified The NETDEV_NOTIFY_PEERS notifier is a request to send such advertisements following migration to a different physical link, e.g. virtual machine migration. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-15 13:46:02 +00:00
net: ipv6: send unsolicited NA after DAD Unsolicited IPv6 neighbor advertisements should be sent after DAD completes. Update ndisc_send_unsol_na to skip tentative, non-optimistic addresses and have those sent by addrconf_dad_completed after DAD. Fixes: 4a6e3c5def13c ("net: ipv6: send unsolicited NA on admin up") Reported-by: Vivek Venkatraman <vivek@cumulusnetworks.com> Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25 20:16:29 -08:00
ipv6: remove unused neigh parameter from ndisc functions Since commit 12fd84f4383b1 ("ipv6: Remove unused neigh argument for icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na and ndisc_send_ns is unused. CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-22 18:57:13 +02:00
ipv6: Send unsolicited neighbour advertismements when notified The NETDEV_NOTIFY_PEERS notifier is a request to send such advertisements following migration to a different physical link, e.g. virtual machine migration. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-15 13:46:02 +00:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ndisc: bool initializations should use true and false Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-13 11:26:51 +03:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
networking: make skb_put & friends return void pointers It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 14:29:21 +02:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: separate ndisc_ns_create() from ndisc_send_ns() This patch separate NS message allocation steps from ndisc_send_ns(), so it could be used in other places, like bonding, to allocate and send IPv6 NS message. Also export ndisc_send_skb() and ndisc_ns_create() for later bonding usage. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-21 13:54:53 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: Make address arguments const. - net/ipv6/addrconf.c: ipv6_get_ifaddr(), ipv6_dev_get_saddr() - net/ipv6/mcast.c: ipv6_sock_mc_join(), ipv6_sock_mc_drop(), inet6_mc_check(), ipv6_dev_mc_inc(), __ipv6_dev_mc_dec(), ipv6_dev_mc_dec(), ipv6_chk_mcast_addr() - net/ipv6/route.c: rt6_lookup(), icmp6_dst_alloc() - net/ipv6/ip6_output.c: ip6_nd_hdr() - net/ipv6/ndisc.c: ndisc_send_ns(), ndisc_send_rs(), ndisc_send_redirect(), ndisc_get_neigh(), __ndisc_send() Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-10 15:42:10 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
[IPV6]: Spelling fixes Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-20 14:01:35 -08:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
[NETNS][IPV6]: inet6_addr - ipv6_get_ifaddr namespace aware The inet6_addr_lst is browsed taking into account the network namespace specified as parameter. If an address does not belong to the specified namespace, it is ignored. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-10 22:44:09 -08:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
[IPV6] ADDRCONF: Fix possible inet6_ifaddr leakage with CONFIG_OPTIMISTIC_DAD. The inet6_ifaddr for source address of RS is leaked if the address is not an optimistic address. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-28 23:13:20 +09:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
[IPV6] ADDRCONF: Fix possible inet6_ifaddr leakage with CONFIG_OPTIMISTIC_DAD. The inet6_ifaddr for source address of RS is leaked if the address is not an optimistic address. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-28 23:13:20 +09:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
networking: make skb_put & friends return void pointers It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 14:29:21 +02:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ndisc: Break down ndisc_build_skb() and build message directly. Construct NS/NA/RS message directly using C99 compound literals. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:17 +00:00
ndisc: Break down __ndisc_send(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:13 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: ipv6: allow explicitly choosing optimistic addresses RFC 4429 ("Optimistic DAD") states that optimistic addresses should be treated as deprecated addresses. From section 2.1: Unless noted otherwise, components of the IPv6 protocol stack should treat addresses in the Optimistic state equivalently to those in the Deprecated state, indicating that the address is available for use but should not be used if another suitable address is available. Optimistic addresses are indeed avoided when other addresses are available (i.e. at source address selection time), but they have not heretofore been available for things like explicit bind() and sendmsg() with struct in6_pktinfo, etc. This change makes optimistic addresses treated more like deprecated addresses than tentative ones. Signed-off-by: Erik Kline <ek@google.com> Acked-by: Lorenzo Colitti <lorenzo@google.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:01:23 +09:00
net/ipv6: Change address check to always take a device argument ipv6_chk_addr_and_flags determines if an address is a local address and optionally if it is an address on a specific device. For example, it is called by ip6_route_info_create to determine if a given gateway address is a local address. The address check currently does not consider L3 domains and as a result does not allow a route to be added in one VRF if the nexthop points to an address in a second VRF. e.g., $ ip route add 2001:db8:1::/64 vrf r2 via 2001:db8:102::23 Error: Invalid gateway address. where 2001:db8:102::23 is an address on an interface in vrf r1. ipv6_chk_addr_and_flags needs to allow callers to always pass in a device with a separate argument to not limit the address to the specific device. The device is used used to determine the L3 domain of interest. To that end add an argument to skip the device check and update callers to always pass a device where possible and use the new argument to mean any address in the domain. Update a handful of users of ipv6_chk_addr with a NULL dev argument. This patch handles the change to these callers without adding the domain check. ip6_validate_gw needs to handle 2 cases - one where the device is given as part of the nexthop spec and the other where the device is resolved. There is at least 1 VRF case where deferring the check to only after the route lookup has resolved the device fails with an unintuitive error "RTNETLINK answers: No route to host" as opposed to the preferred "Error: Gateway can not be a local address." The 'no route to host' error is because of the fallback to a full lookup. The check is done twice to avoid this error. Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-13 08:29:37 -07:00
net: ipv6: allow explicitly choosing optimistic addresses RFC 4429 ("Optimistic DAD") states that optimistic addresses should be treated as deprecated addresses. From section 2.1: Unless noted otherwise, components of the IPv6 protocol stack should treat addresses in the Optimistic state equivalently to those in the Deprecated state, indicating that the address is available for use but should not be used if another suitable address is available. Optimistic addresses are indeed avoided when other addresses are available (i.e. at source address selection time), but they have not heretofore been available for things like explicit bind() and sendmsg() with struct in6_pktinfo, etc. This change makes optimistic addresses treated more like deprecated addresses than tentative ones. Signed-off-by: Erik Kline <ek@google.com> Acked-by: Lorenzo Colitti <lorenzo@google.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:01:23 +09:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
ipv6: coding style improvements (remove assignment in if statements) This change has no functional impact and simply addresses some coding style issues detected by checkpatch. Specifically this change adjusts "if" statements which also include the assignment of a variable. No changes to the resultant object files result as determined by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-23 21:28:43 +00:00
neighbour: annotate lockless accesses to n->nud_state We have many lockless accesses to n->nud_state. Before adding another one in the following patch, add annotations to readers and writers. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-03-13 20:17:31 +00:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
[NEIGH]: Fix race between pneigh deletion and ipv6's ndisc_recv_ns (v3). Proxy neighbors do not have any reference counting, so any caller of pneigh_lookup (unless it's a netlink triggered add/del routine) should _not_ perform any actions on the found proxy entry. There's one exception from this rule - the ipv6's ndisc_recv_ns() uses found entry to check the flags for NTF_ROUTER. This creates a race between the ndisc and pneigh_delete - after the pneigh is returned to the caller, the nd_tbl.lock is dropped and the deleting procedure may proceed. One of the fixes would be to add a reference counting, but this problem exists for ndisc only. Besides such a patch would be too big for -rc4. So I propose to introduce a __pneigh_lookup() which is supposed to be called with the lock held and use it in ndisc code to check the flags on alive pneigh entry. Changes from v2: As David noticed, Exported the __pneigh_lookup() to ipv6 module. The checkpatch generates a warning on it, since the EXPORT_SYMBOL does not follow the symbol itself, but in this file all the exports come at the end, so I decided no to break this harmony. Changes from v1: Fixed comments from YOSHIFUJI - indentation of prototype in header and the pndisc_check_router() name - and a compilation fix, pointed by Daniel - the is_routed was (falsely) considered as uninitialized by gcc. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-24 14:48:59 -07:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
[NEIGH]: Fix race between pneigh deletion and ipv6's ndisc_recv_ns (v3). Proxy neighbors do not have any reference counting, so any caller of pneigh_lookup (unless it's a netlink triggered add/del routine) should _not_ perform any actions on the found proxy entry. There's one exception from this rule - the ipv6's ndisc_recv_ns() uses found entry to check the flags for NTF_ROUTER. This creates a race between the ndisc and pneigh_delete - after the pneigh is returned to the caller, the nd_tbl.lock is dropped and the deleting procedure may proceed. One of the fixes would be to add a reference counting, but this problem exists for ndisc only. Besides such a patch would be too big for -rc4. So I propose to introduce a __pneigh_lookup() which is supposed to be called with the lock held and use it in ndisc code to check the flags on alive pneigh entry. Changes from v2: As David noticed, Exported the __pneigh_lookup() to ipv6 module. The checkpatch generates a warning on it, since the EXPORT_SYMBOL does not follow the symbol itself, but in this file all the exports come at the end, so I decided no to break this harmony. Changes from v1: Fixed comments from YOSHIFUJI - indentation of prototype in header and the pndisc_check_router() name - and a compilation fix, pointed by Daniel - the is_routed was (falsely) considered as uninitialized by gcc. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-24 14:48:59 -07:00
neighbour: Remove __pneigh_lookup(). __pneigh_lookup() is the lockless version of pneigh_lookup(), but its only caller pndisc_is_router() holds the table lock and reads pneigh_netry.flags. This is because accessing pneigh_entry after pneigh_lookup() was illegal unless the caller holds RTNL or the table lock. Now, pneigh_entry is guaranteed to be alive during the RCU critical section. Let's call pneigh_lookup() and use READ_ONCE() for n->flags in pndisc_is_router() and remove __pneigh_lookup(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250716221221.442239-13-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-16 22:08:17 +00:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
neighbour: Remove __pneigh_lookup(). __pneigh_lookup() is the lockless version of pneigh_lookup(), but its only caller pndisc_is_router() holds the table lock and reads pneigh_netry.flags. This is because accessing pneigh_entry after pneigh_lookup() was illegal unless the caller holds RTNL or the table lock. Now, pneigh_entry is guaranteed to be alive during the RCU critical section. Let's call pneigh_lookup() and use READ_ONCE() for n->flags in pndisc_is_router() and remove __pneigh_lookup(). Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250716221221.442239-13-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-16 22:08:17 +00:00
[NEIGH]: Fix race between pneigh deletion and ipv6's ndisc_recv_ns (v3). Proxy neighbors do not have any reference counting, so any caller of pneigh_lookup (unless it's a netlink triggered add/del routine) should _not_ perform any actions on the found proxy entry. There's one exception from this rule - the ipv6's ndisc_recv_ns() uses found entry to check the flags for NTF_ROUTER. This creates a race between the ndisc and pneigh_delete - after the pneigh is returned to the caller, the nd_tbl.lock is dropped and the deleting procedure may proceed. One of the fixes would be to add a reference counting, but this problem exists for ndisc only. Besides such a patch would be too big for -rc4. So I propose to introduce a __pneigh_lookup() which is supposed to be called with the lock held and use it in ndisc code to check the flags on alive pneigh entry. Changes from v2: As David noticed, Exported the __pneigh_lookup() to ipv6 module. The checkpatch generates a warning on it, since the EXPORT_SYMBOL does not follow the symbol itself, but in this file all the exports come at the end, so I decided no to break this harmony. Changes from v1: Fixed comments from YOSHIFUJI - indentation of prototype in header and the pndisc_check_router() name - and a compilation fix, pointed by Daniel - the is_routed was (falsely) considered as uninitialized by gcc. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-24 14:48:59 -07:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
[NEIGH]: Fix race between pneigh deletion and ipv6's ndisc_recv_ns (v3). Proxy neighbors do not have any reference counting, so any caller of pneigh_lookup (unless it's a netlink triggered add/del routine) should _not_ perform any actions on the found proxy entry. There's one exception from this rule - the ipv6's ndisc_recv_ns() uses found entry to check the flags for NTF_ROUTER. This creates a race between the ndisc and pneigh_delete - after the pneigh is returned to the caller, the nd_tbl.lock is dropped and the deleting procedure may proceed. One of the fixes would be to add a reference counting, but this problem exists for ndisc only. Besides such a patch would be too big for -rc4. So I propose to introduce a __pneigh_lookup() which is supposed to be called with the lock held and use it in ndisc code to check the flags on alive pneigh entry. Changes from v2: As David noticed, Exported the __pneigh_lookup() to ipv6 module. The checkpatch generates a warning on it, since the EXPORT_SYMBOL does not follow the symbol itself, but in this file all the exports come at the end, so I decided no to break this harmony. Changes from v1: Fixed comments from YOSHIFUJI - indentation of prototype in header and the pndisc_check_router() name - and a compilation fix, pointed by Daniel - the is_routed was (falsely) considered as uninitialized by gcc. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-24 14:48:59 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
neighbour: fix nlmsg_pid in notifications neigh notifications today carry pid 0 for nlmsg_pid in all cases. This patch fixes it to carry calling process pid when available. Applications (eg. quagga) rely on nlmsg_pid to ignore notifications generated by their own netlink operations. This patch follows the routing subsystem which already sets this correctly. Reported-by: Vivek Venkatraman <vivek@cumulusnetworks.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-19 22:01:28 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 18:04:18 -07:00
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 04:53:02 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header This corrects an regression introduced by "net: Use 16bits for *_headers fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In that case skb->tail will be a pointer whereas skb->transport_header will be an offset from head. This is corrected by using wrappers that ensure that comparisons and calculations are always made using pointers. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28 20:34:26 +00:00
[SK_BUFF]: Convert skb->tail to sk_buff_data_t So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-19 20:29:13 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
ndisc: Check NS message length before access. Check message length before accessing "target" field, as we do for other types. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-18 02:05:03 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Introduce ipv6_addr_is_solict_mult() to check Solicited Node Multicast Addresses. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-20 07:39:00 +00:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS This is a generic drop reason for any error detected in ndisc_parse_options(). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:40 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: make DAD fail with enhanced DAD when nonce length differs Commit adc176c54722 ("ipv6 addrconf: Implemented enhanced DAD (RFC7527)") added enhanced DAD with a nonce length of 6 bytes. However, RFC7527 doesn't specify the length of the nonce, other than being 6 + 8*k bytes, with integer k >= 0 (RFC3971 5.3.2). The current implementation simply assumes that the nonce will always be 6 bytes, but others systems are free to choose different sizes. If another system sends a nonce of different length but with the same 6 bytes prefix, it shouldn't be considered as the same nonce. Thus, check that the length of the received nonce is the same as the length we sent. Ugly scapy test script running on veth0: def loop(): pkt=sniff(iface="veth0", filter="icmp6", count=1) pkt = pkt[0] b = bytearray(pkt[Raw].load) b[1] += 1 b += b'\xde\xad\xbe\xef\xde\xad\xbe\xef' pkt[Raw].load = bytes(b) pkt[IPv6].plen += 8 # fixup checksum after modifying the payload pkt[IPv6].payload.cksum -= 0x3b44 if pkt[IPv6].payload.cksum < 0: pkt[IPv6].payload.cksum += 0xffff sendp(pkt, iface="veth0") This should result in DAD failure for any address added to veth0's peer, but is currently ignored. Fixes: adc176c54722 ("ipv6 addrconf: Implemented enhanced DAD (RFC7527)") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-13 17:21:42 +02:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
[NETNS][IPV6] ndisc - make ndisc handle multiple network namespaces Make ndisc handle multiple network namespaces: Remove references to init_net, add network namespace parameters and add pernet_operations for ndisc Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:14:49 -08:00
net: Add VRF support to IPv6 stack As with IPv4 support for VRFs added to IPv6 stack by replacing hardcoded table ids with possibly device specific ones and manipulating the oif in the flowi6. The flow flags are used to skip oif compare in nexthop lookups if the device is enslaved to a VRF via the L3 master device. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-12 11:47:10 -07:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6 addrconf: Implemented enhanced DAD (RFC7527) Implemented RFC7527 Enhanced DAD. IPv6 duplicate address detection can fail if there is some temporary loopback of Ethernet frames. RFC7527 solves this by including a random nonce in the NS messages used for DAD, and if an NS is received with the same nonce it is assumed to be a looped back DAD probe and is ignored. RFC7527 is enabled by default. Can be disabled by setting both of conf/{all,interface}/enhanced_dad to zero. Signed-off-by: Erik Nordmark <nordmark@arista.com> Signed-off-by: Bob Gilligan <gilligan@arista.com> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02 14:00:08 -08:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
net: display hw address of source machine during ipv6 DAD failure This patch updates the error messages displayed in kernel log to include hwaddress of the source machine that caused ipv6 duplicate address detection failures. Examples: a) When we receive a NA packet from another machine advertising our address: ICMPv6: NA: 34:ab:cd:56:11:e8 advertised our address 2001:db8:: on eth0! b) When we detect DAD failure during address assignment to an interface: IPv6: eth0: IPv6 duplicate address 2001:db8:: used by 34:ab:cd:56:11:e8 detected! v2: Changed %pI6 to %pI6c in ndisc_recv_na() Chaged the v6 address in the commit message to 2001:db8:: Suggested-by: Igor Lubashev <ilubashe@akamai.com> Signed-off-by: Vishwanath Pai <vpai@akamai.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-30 19:38:52 -04:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6 netns: Make several "global" sysctl variables namespace aware. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-19 22:35:03 -07:00
net: Add VRF support to IPv6 stack As with IPv4 support for VRFs added to IPv6 stack by replacing hardcoded table ids with possibly device specific ones and manipulating the oif in the flowi6. The flow flags are used to skip oif compare in nexthop lookups if the device is enslaved to a VRF via the L3 master device. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-12 11:47:10 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6 netns: Make several "global" sysctl variables namespace aware. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-19 22:35:03 -07:00
ipv6: annotate data-races around cnf.forwarding idev->cnf.forwarding and net->ipv6.devconf_all->forwarding might be read locklessly, add appropriate READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:30 +00:00
ipv6: annotate data-races around devconf->proxy_ndp devconf->proxy_ndp can be read and written locklessly, add appropriate annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:34 +00:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
[NET]: Store skb->timestamp as offset to a base timestamp Reduces skb size by 8 bytes on 64-bit. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-14 17:24:31 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: bool initializations should use true and false Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-13 11:26:51 +03:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST Hosts can often receive neighbour discovery messages that are not for them. Use a dedicated drop reason to make clear the packet is dropped for this normal case. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:41 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST Hosts can often receive neighbour discovery messages that are not for them. Use a dedicated drop reason to make clear the packet is dropped for this normal case. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:41 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] NEIGH: Optimize is_router check. Our interest is not the whole entry of proxy neighbor but the NTF_ROUTER flag. Let's test it explicitly. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-28 13:37:58 +09:00
ipv6: annotate data-races around cnf.forwarding idev->cnf.forwarding and net->ipv6.devconf_all->forwarding might be read locklessly, add appropriate READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:30 +00:00
[IPV6] NDISC: Set per-entry is_router flag in Proxy NA. We have sent NA with router flag from the node-wide forwarding configuration. This is not appropriate for proxy NA, and it should be set according to each proxy entry's configuration. This is used by Mobile IPv6 home agent to support physical home link in acting as a proxy router for mobile node which is not a router, for example. Based on MIPL2 kernel patch. Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-09-22 14:43:19 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: remove unused neigh parameter from ndisc functions Since commit 12fd84f4383b1 ("ipv6: Remove unused neigh argument for icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na and ndisc_send_ns is unused. CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-22 18:57:13 +02:00
ndisc: Make several arguments for ndisc_send_na() boolean. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-20 07:39:18 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
[NET]: Move hardware header operations out of netdevice. Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:40:57 -07:00
ipv6: remove unused neigh parameter from ndisc functions Since commit 12fd84f4383b1 ("ipv6: Remove unused neigh argument for icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na and ndisc_send_ns is unused. CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-22 18:57:13 +02:00
ndisc: Make several arguments for ndisc_send_na() boolean. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-20 07:39:18 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: ipv6: new accept_untracked_na option to accept na only if in-network This patch adds a third knob, '2', which extends the accept_untracked_na option to learn a neighbor only if the src ip is in the same subnet as an address configured on the interface that received the neighbor advertisement. This is similar to the arp_accept configuration for ipv4. Signed-off-by: Jaehee Park <jhpark1013@gmail.com> Suggested-by: Roopa Prabhu <roopa@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-13 16:40:48 -07:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
net: ipv6: new accept_untracked_na option to accept na only if in-network This patch adds a third knob, '2', which extends the accept_untracked_na option to learn a neighbor only if the src ip is in the same subnet as an address configured on the interface that received the neighbor advertisement. This is similar to the arp_accept configuration for ipv4. Signed-off-by: Jaehee Park <jhpark1013@gmail.com> Suggested-by: Roopa Prabhu <roopa@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-13 16:40:48 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 18:04:18 -07:00
ipv6: update Destination Cache entries when gateway turn into host RFC 4861 states in 7.2.5: The IsRouter flag in the cache entry MUST be set based on the Router flag in the received advertisement. In those cases where the IsRouter flag changes from TRUE to FALSE as a result of this update, the node MUST remove that router from the Default Router List and update the Destination Cache entries for all destinations using that neighbor as a router as specified in Section 7.3.3. This is needed to detect when a node that is used as a router stops forwarding packets due to being configured as a host. Currently, when dealing with NA Message which IsRouter flag changes from TRUE to FALSE, the kernel only removes router from the Default Router List, and don't update the Destination Cache entries. Now in order to update those Destination Cache entries, i introduce function rt6_clean_tohost(). Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-15 15:56:14 +08:00
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 04:53:02 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header This corrects an regression introduced by "net: Use 16bits for *_headers fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In that case skb->tail will be a pointer whereas skb->transport_header will be an offset from head. This is corrected by using wrappers that ensure that comparisons and calculations are always made using pointers. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28 20:34:26 +00:00
[SK_BUFF]: Convert skb->tail to sk_buff_data_t So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-19 20:29:13 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: add option to drop unsolicited neighbor advertisements In certain 802.11 wireless deployments, there will be NA proxies that use knowledge of the network to correctly answer requests. To prevent unsolicitd advertisements on the shared medium from being a problem, on such deployments wireless needs to drop them. Enable this by providing an option called "drop_unsolicited_na". Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-04 13:31:20 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
ipv6: add option to drop unsolicited neighbor advertisements In certain 802.11 wireless deployments, there will be NA proxies that use knowledge of the network to correctly answer requests. To prevent unsolicitd advertisements on the shared medium from being a problem, on such deployments wireless needs to drop them. Enable this by providing an option called "drop_unsolicited_na". Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-04 13:31:20 +01:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
ipv6: add option to drop unsolicited neighbor advertisements In certain 802.11 wireless deployments, there will be NA proxies that use knowledge of the network to correctly answer requests. To prevent unsolicitd advertisements on the shared medium from being a problem, on such deployments wireless needs to drop them. Enable this by providing an option called "drop_unsolicited_na". Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-04 13:31:20 +01:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
ipv6: add option to drop unsolicited neighbor advertisements In certain 802.11 wireless deployments, there will be NA proxies that use knowledge of the network to correctly answer requests. To prevent unsolicitd advertisements on the shared medium from being a problem, on such deployments wireless needs to drop them. Enable this by providing an option called "drop_unsolicited_na". Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-04 13:31:20 +01:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS This is a generic drop reason for any error detected in ndisc_parse_options(). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:40 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
[NETNS][IPV6] ndisc - make ndisc handle multiple network namespaces Make ndisc handle multiple network namespaces: Remove references to init_net, add network namespace parameters and add pernet_operations for ndisc Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:14:49 -08:00
ipv6: ignore looped-back NA while dad is running [ipv6] Ignore looped-back NAs while in Duplicate Address Detection If we send an unsolicited NA shortly after bringing up an IPv6 address, the duplicate address detection algorithm fails and the ip stays in tentative mode forever. This is due a missing check if the NA is looped-back to us. Signed-off-by: Daniel Walter <dwalter@barracuda.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-13 21:09:25 +00:00
net: display hw address of source machine during ipv6 DAD failure This patch updates the error messages displayed in kernel log to include hwaddress of the source machine that caused ipv6 duplicate address detection failures. Examples: a) When we receive a NA packet from another machine advertising our address: ICMPv6: NA: 34:ab:cd:56:11:e8 advertised our address 2001:db8:: on eth0! b) When we detect DAD failure during address assignment to an interface: IPv6: eth0: IPv6 duplicate address 2001:db8:: used by 34:ab:cd:56:11:e8 detected! v2: Changed %pI6 to %pI6c in ndisc_recv_na() Chaged the v6 address in the commit message to 2001:db8:: Suggested-by: Igor Lubashev <ilubashe@akamai.com> Signed-off-by: Vishwanath Pai <vpai@akamai.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-30 19:38:52 -04:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: silence log messages for locally generated multicast This patch fixes minor annoyance during transmission of unsolicited neighbor advertisements from userspace to multicast addresses (as far as I can see in RFC, this is allowed and the similar functionality for IPv4 has been in arping for a long time). Outgoing multicast packets get reinserted into local processing as if they are received from the network. The machine thus sees its own NA and fills the logs with error messages. This patch removes the message if NA has been generated locally. Signed-off-by: Jan Sembera <jsembera@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09 15:48:32 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: silence log messages for locally generated multicast This patch fixes minor annoyance during transmission of unsolicited neighbor advertisements from userspace to multicast addresses (as far as I can see in RFC, this is allowed and the similar functionality for IPv4 has been in arping for a long time). Outgoing multicast packets get reinserted into local processing as if they are received from the network. The machine thus sees its own NA and fills the logs with error messages. This patch removes the message if NA has been generated locally. Signed-off-by: Jan Sembera <jsembera@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09 15:48:32 -08:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131 Add a new neighbour cache entry in STALE state for routers on receiving an unsolicited (gratuitous) neighbour advertisement with target link-layer-address option specified. This is similar to the arp_accept configuration for IPv4. A new sysctl endpoint is created to turn on this behaviour: /proc/sys/net/ipv6/conf/interface/accept_unsolicited_na. Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-15 08:34:02 +00:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131 Add a new neighbour cache entry in STALE state for routers on receiving an unsolicited (gratuitous) neighbour advertisement with target link-layer-address option specified. This is similar to the arp_accept configuration for IPv4. A new sysctl endpoint is created to turn on this behaviour: /proc/sys/net/ipv6/conf/interface/accept_unsolicited_na. Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-15 08:34:02 +00:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
ipv6: annotate data-races around cnf.forwarding idev->cnf.forwarding and net->ipv6.devconf_all->forwarding might be read locklessly, add appropriate READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:30 +00:00
net: ipv6: new accept_untracked_na option to accept na only if in-network This patch adds a third knob, '2', which extends the accept_untracked_na option to learn a neighbor only if the src ip is in the same subnet as an address configured on the interface that received the neighbor advertisement. This is similar to the arp_accept configuration for ipv4. Signed-off-by: Jaehee Park <jhpark1013@gmail.com> Suggested-by: Roopa Prabhu <roopa@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-13 16:40:48 -07:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6 netns: Make several "global" sysctl variables namespace aware. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-19 22:35:03 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neighbour: annotate lockless accesses to n->nud_state We have many lockless accesses to n->nud_state. Before adding another one in the following patch, add annotations to readers and writers. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-03-13 20:17:31 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] NDISC: Avoid updating neighbor cache for proxied address in receiving NA. This aims at proxying router not updating neighbor cache entry for proxied address when it receives NA because either the proxied node is off link or it has already sent a NA to the proxied router. Based on MIPL2 kernel patch. Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-09-22 14:42:46 -07:00
ipv6: annotate data-races around cnf.forwarding idev->cnf.forwarding and net->ipv6.devconf_all->forwarding might be read locklessly, add appropriate READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:30 +00:00
ipv6: annotate data-races around devconf->proxy_ndp devconf->proxy_ndp can be read and written locklessly, add appropriate annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:34 +00:00
neighbour: Split pneigh_lookup(). pneigh_lookup() has ASSERT_RTNL() in the middle of the function, which is confusing. When called with the last argument, creat, 0, pneigh_lookup() literally looks up a proxy neighbour entry. This is the case of the reader path as the fast path and RTM_GETNEIGH. pneigh_lookup(), however, creates a pneigh_entry when called with creat 1 from RTM_NEWNEIGH and SIOCSARP, which require RTNL. Let's split pneigh_lookup() into two functions. We will convert all the reader paths to RCU, and read_lock_bh(&tbl->lock) in the new pneigh_lookup() will be dropped. Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250716221221.442239-6-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-16 22:08:10 +00:00
ndisc: fix a typo in a comment in ndisc_recv_na() Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-07 05:05:38 +00:00
[IPV6] NDISC: Avoid updating neighbor cache for proxied address in receiving NA. This aims at proxying router not updating neighbor cache entry for proxied address when it receives NA because either the proxied node is off link or it has already sent a NA to the proxied router. Based on MIPL2 kernel patch. Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-09-22 14:42:46 -07:00
[IPV6] NDISC: Add proxy_ndp sysctl. We do not always need proxy NDP functionality even we enable forwarding. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-22 14:43:49 -07:00
[IPV6] NDISC: Avoid updating neighbor cache for proxied address in receiving NA. This aims at proxying router not updating neighbor cache entry for proxied address when it receives NA because either the proxied node is off link or it has already sent a NA to the proxied router. Based on MIPL2 kernel patch. Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-09-22 14:42:46 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na RFC 9131 changes default behaviour of handling RX of NA messages when the corresponding entry is absent in the neighbour cache. The current implementation is limited to accept just unsolicited NAs. However, the RFC is more generic where it also accepts solicited NAs. Both types should result in adding a STALE entry for this case. Expand accept_untracked_na behaviour to also accept solicited NAs to be compliant with the RFC and rename the sysctl knob to accept_untracked_na. Fixes: f9a2fb73318e ("net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131") Signed-off-by: Arun Ajith S <aajith@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220530101414.65439-1-aajith@arista.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-05-30 10:14:14 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: update Destination Cache entries when gateway turn into host RFC 4861 states in 7.2.5: The IsRouter flag in the cache entry MUST be set based on the Router flag in the received advertisement. In those cases where the IsRouter flag changes from TRUE to FALSE as a result of this update, the node MUST remove that router from the Default Router List and update the Destination Cache entries for all destinations using that neighbor as a router as specified in Section 7.3.3. This is needed to detect when a node that is used as a router stops forwarding packets due to being configured as a host. Currently, when dealing with NA Message which IsRouter flag changes from TRUE to FALSE, the kernel only removes router from the Default Router List, and don't update the Destination Cache entries. Now in order to update those Destination Cache entries, i introduce function rt6_clean_tohost(). Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-15 15:56:14 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 18:04:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 04:53:02 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: some RCU conversions ICMP and ND are not fast path, but still we can avoid changing idev refcount, using RCU. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 21:13:03 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: annotate data-races around cnf.forwarding idev->cnf.forwarding and net->ipv6.devconf_all->forwarding might be read locklessly, add appropriate READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:30 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS This is a generic drop reason for any error detected in ndisc_parse_options(). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:40 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
[IPV6]: Add ifindex field to ND user option messages. Userland neighbor discovery options are typically heavily involved with the interface on which thay are received: add a missing ifindex field to the original struct. Thanks to Rmi Denis-Courmont. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-12 17:58:35 -08:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTM_NEWNDUSEROPT netlink message. The nduseroptmsg struct has three padding fields that are never zeroed and can leak kernel data The fix is simple, just zeroes the padding fields. Fixes: 31910575a9de ("[IPv6]: Export userland ND options through netlink (RDNSS support)") Signed-off-by: Yochai Eisenrich <echelonh@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260324224925.2437775-1-echelonh@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-25 00:49:25 +02:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
netlink: implement nla_put_in_addr and nla_put_in6_addr IP addresses are often stored in netlink attributes. Add generic functions to do that. For nla_put_in_addr, it would be nicer to pass struct in_addr but this is not used universally throughout the kernel, in way too many places __be32 is used to store IPv4 address. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 16:59:25 +02:00
ipv6: Stop using NLA_PUT*(). These macros contain a hidden goto, and are thus extremely error prone and make code hard to audit. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-01 20:27:33 -04:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
netlink: change nlmsg_notify() return value logic This patch changes the return value of nlmsg_notify() as follows: If NETLINK_BROADCAST_ERROR is set by any of the listeners and an error in the delivery happened, return the broadcast error; else if there are no listeners apart from the socket that requested a change with the echo flag, return the result of the unicast notification. Thus, with this patch, the unicast notification is handled in the same way of a broadcast listener that has set the NETLINK_BROADCAST_ERROR socket flag. This patch is useful in case that the caller of nlmsg_notify() wants to know the result of the delivery of a netlink notification (including the broadcast delivery) and take any action in case that the delivery failed. For example, ctnetlink can drop packets if the event delivery failed to provide reliable logging and state-synchronization at the cost of dropping packets. This patch also modifies the rtnetlink code to ignore the return value of rtnl_notify() in all callers. The function rtnl_notify() (before this patch) returned the error of the unicast notification which makes rtnl_set_sk_err() reports errors to all listeners. This is not of any help since the origin of the change (the socket that requested the echoing) notices the ENOBUFS error if the notification fails and should resync itself. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-24 23:18:28 -08:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
[NETNS][IPV6] ndisc - make ndisc handle multiple network namespaces Make ndisc handle multiple network namespaces: Remove references to init_net, add network namespace parameters and add pernet_operations for ndisc Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:14:49 -08:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 18:04:18 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
net/ipv6: Remove expired routes with a separated list of routes. FIB6 GC walks trees of fib6_tables to remove expired routes. Walking a tree can be expensive if the number of routes in a table is big, even if most of them are permanent. Checking routes in a separated list of routes having expiration will avoid this potential issue. Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-08 14:06:51 -08:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
[IPV6]: ROUTE: Add support for Router Preference (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:04:53 -08:00
ipv6: send NEWLINK on RA managed/otherconf changes The kernel is applying the RA managed/otherconf flags silently and forgets to send ifinfo notify to inform about their change when the router provides a zero reachable_time and retrans_timer as dnsmasq and many routers send it, which just means unspecified by this router and the host should continue using whatever value it is already using. Userspace may monitor the ifinfo notifications to activate dhcpv6. Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 15:59:22 +02:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header This corrects an regression introduced by "net: Use 16bits for *_headers fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In that case skb->tail will be a pointer whereas skb->transport_header will be an offset from head. This is corrected by using wrappers that ensure that comparisons and calculations are always made using pointers. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28 20:34:26 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
ipv6: some RCU conversions ICMP and ND are not fast path, but still we can avoid changing idev refcount, using RCU. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 21:13:03 +00:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS This is a generic drop reason for any error detected in ndisc_parse_options(). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:40 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: Update Neighbor Cache when IPv6 RA is received on a router When processing a received IPv6 Router Advertisement, the kernel creates or updates an IPv6 Neighbor Cache entry for the sender -- but presently this does not occur if IPv6 forwarding is enabled (net.ipv6.conf.*.forwarding = 1), or if IPv6 Router Advertisements are not accepted (net.ipv6.conf.*.accept_ra = 0), because in these cases processing of the Router Advertisement has already halted. This patch allows the Neighbor Cache to be updated in these cases, while still avoiding any modification to routes or link parameters. This continues to satisfy RFC 4861, since any entry created in the Neighbor Cache as the result of a received Router Advertisement is still placed in the STALE state. Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-29 00:04:09 -07:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
ipv6: Update Neighbor Cache when IPv6 RA is received on a router When processing a received IPv6 Router Advertisement, the kernel creates or updates an IPv6 Neighbor Cache entry for the sender -- but presently this does not occur if IPv6 forwarding is enabled (net.ipv6.conf.*.forwarding = 1), or if IPv6 Router Advertisements are not accepted (net.ipv6.conf.*.accept_ra = 0), because in these cases processing of the Router Advertisement has already halted. This patch allows the Neighbor Cache to be updated in these cases, while still avoiding any modification to routes or link parameters. This continues to satisfy RFC 4861, since any entry created in the Neighbor Cache as the result of a received Router Advertisement is still placed in the STALE state. Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-29 00:04:09 -07:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: send NEWLINK on RA managed/otherconf changes The kernel is applying the RA managed/otherconf flags silently and forgets to send ifinfo notify to inform about their change when the router provides a zero reachable_time and retrans_timer as dnsmasq and many routers send it, which just means unspecified by this router and the host should continue using whatever value it is already using. Userspace may monitor the ifinfo notifications to activate dhcpv6. Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 15:59:22 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: send NEWLINK on RA managed/otherconf changes The kernel is applying the RA managed/otherconf flags silently and forgets to send ifinfo notify to inform about their change when the router provides a zero reachable_time and retrans_timer as dnsmasq and many routers send it, which just means unspecified by this router and the host should continue using whatever value it is already using. Userspace may monitor the ifinfo notifications to activate dhcpv6. Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 15:59:22 +02:00
ipv6: send only one NEWLINK when RA causes changes Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-01 01:57:30 +02:00
ipv6: send NEWLINK on RA managed/otherconf changes The kernel is applying the RA managed/otherconf flags silently and forgets to send ifinfo notify to inform about their change when the router provides a zero reachable_time and retrans_timer as dnsmasq and many routers send it, which just means unspecified by this router and the host should continue using whatever value it is already using. Userspace may monitor the ifinfo notifications to activate dhcpv6. Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 15:59:22 +02:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
[IPV6]: ROUTE: Add accept_ra_defrtr sysctl. This controls whether we accept default router information in RAs. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:55:08 -08:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
[IPV6]: ROUTE: Add accept_ra_defrtr sysctl. This controls whether we accept default router information in RAs. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:55:08 -08:00
net: change accept_ra_min_rtr_lft to affect all RA lifetimes accept_ra_min_rtr_lft only considered the lifetime of the default route and discarded entire RAs accordingly. This change renames accept_ra_min_rtr_lft to accept_ra_min_lft, and applies the value to individual RA sections; in particular, router lifetime, PIO preferred lifetime, and RIO lifetime. If any of those lifetimes are lower than the configured value, the specific RA section is ignored. In order for the sysctl to be useful to Android, it should really apply to all lifetimes in the RA, since that is what determines the minimum frequency at which RAs must be processed by the kernel. Android uses hardware offloads to drop RAs for a fraction of the minimum of all lifetimes present in the RA (some networks have very frequent RAs (5s) with high lifetimes (2h)). Despite this, we have encountered networks that set the router lifetime to 30s which results in very frequent CPU wakeups. Instead of disabling IPv6 (and dropping IPv6 ethertype in the WiFi firmware) entirely on such networks, it seems better to ignore the misconfigured routers while still processing RAs from other IPv6 routers on the same network (i.e. to support IoT applications). The previous implementation dropped the entire RA based on router lifetime. This turned out to be hard to expand to the other lifetimes present in the RA in a consistent manner; dropping the entire RA based on RIO/PIO lifetimes would essentially require parsing the whole thing twice. Fixes: 1671bcfd76fd ("net: add sysctl accept_ra_min_rtr_lft") Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Patrick Rohr <prohr@google.com> Reviewed-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20230726230701.919212-1-prohr@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-07-26 16:07:01 -07:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
net: change accept_ra_min_rtr_lft to affect all RA lifetimes accept_ra_min_rtr_lft only considered the lifetime of the default route and discarded entire RAs accordingly. This change renames accept_ra_min_rtr_lft to accept_ra_min_lft, and applies the value to individual RA sections; in particular, router lifetime, PIO preferred lifetime, and RIO lifetime. If any of those lifetimes are lower than the configured value, the specific RA section is ignored. In order for the sysctl to be useful to Android, it should really apply to all lifetimes in the RA, since that is what determines the minimum frequency at which RAs must be processed by the kernel. Android uses hardware offloads to drop RAs for a fraction of the minimum of all lifetimes present in the RA (some networks have very frequent RAs (5s) with high lifetimes (2h)). Despite this, we have encountered networks that set the router lifetime to 30s which results in very frequent CPU wakeups. Instead of disabling IPv6 (and dropping IPv6 ethertype in the WiFi firmware) entirely on such networks, it seems better to ignore the misconfigured routers while still processing RAs from other IPv6 routers on the same network (i.e. to support IoT applications). The previous implementation dropped the entire RA based on router lifetime. This turned out to be hard to expand to the other lifetimes present in the RA in a consistent manner; dropping the entire RA based on RIO/PIO lifetimes would essentially require parsing the whole thing twice. Fixes: 1671bcfd76fd ("net: add sysctl accept_ra_min_rtr_lft") Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Patrick Rohr <prohr@google.com> Reviewed-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20230726230701.919212-1-prohr@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-07-26 16:07:01 -07:00
ipv6: Allow accepting RA from local IP addresses. This can be used in virtual networking applications, and may have other uses as well. The option is disabled by default. A specific use case is setting up virtual routers, bridges, and hosts on a single OS without the use of network namespaces or virtual machines. With proper use of ip rules, routing tables, veth interface pairs and/or other virtual interfaces, and applications that can bind to interfaces and/or IP addresses, it is possibly to create one or more virtual routers with multiple hosts attached. The host interfaces can act as IPv6 systems, with radvd running on the ports in the virtual routers. With the option provided in this patch enabled, those hosts can now properly obtain IPv6 addresses from the radvd. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:53 -07:00
net/ipv6: Pass net namespace to route functions Pass network namespace reference into route add, delete and get functions. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:11 -07:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net/ipv6: Pass net namespace to route functions Pass network namespace reference into route add, delete and get functions. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:11 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: Do not use routes from locally generated RAs When hybrid mode is enabled (accept_ra == 2), the kernel also sees RAs generated locally. This is useful since it allows the kernel to auto-configure its own interface addresses. However, if 'accept_ra_defrtr' and/or 'accept_ra_rtr_pref' are set and the locally generated RAs announce the default route and/or other route information, the kernel happily inserts bogus routes with its own address as gateway. With this patch, adding routes from an RA will be skiped when the RAs source address matches any local address, just as if 'accept_ra_defrtr' and 'accept_ra_rtr_pref' were set to 0. Signed-off-by: Andreas Hofmeister <andi@collax.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-24 19:13:15 -04:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
ipv6: Do not use routes from locally generated RAs When hybrid mode is enabled (accept_ra == 2), the kernel also sees RAs generated locally. This is useful since it allows the kernel to auto-configure its own interface addresses. However, if 'accept_ra_defrtr' and/or 'accept_ra_rtr_pref' are set and the locally generated RAs announce the default route and/or other route information, the kernel happily inserts bogus routes with its own address as gateway. With this patch, adding routes from an RA will be skiped when the RAs source address matches any local address, just as if 'accept_ra_defrtr' and 'accept_ra_rtr_pref' were set to 0. Signed-off-by: Andreas Hofmeister <andi@collax.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-24 19:13:15 -04:00
[IPV6]: ROUTE: Add support for Router Preference (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:04:53 -08:00
[IPV6]: ROUTE: Add accept_ra_rtr_pref sysctl. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:30 -08:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
[IPV6]: ROUTE: Add support for Router Preference (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:04:53 -08:00
ipv6: Plumb support for nexthop object in a fib6_info Add struct nexthop and nh_list list_head to fib6_info. nh_list is the fib6_info side of the nexthop <-> fib_info relationship. Since a fib6_info referencing a nexthop object can not have 'sibling' entries (the old way of doing multipath routes), the nh_list is a union with fib6_siblings. Add f6i_list list_head to 'struct nexthop' to track fib6_info entries using a nexthop instance. Update __remove_nexthop_fib to walk f6_list and delete fib entries using the nexthop. Add a few nexthop helpers for use when a nexthop is added to fib6_info: - nexthop_fib6_nh - return first fib6_nh in a nexthop object - fib6_info_nh_dev moved to nexthop.h and updated to use nexthop_fib6_nh if the fib6_info references a nexthop object - nexthop_path_fib6_result - similar to ipv4, select a path within a multipath nexthop object. If the nexthop is a blackhole, set fib6_result type to RTN_BLACKHOLE, and set the REJECT flag Update the fib6_info references to check for nh and take a different path as needed: - rt6_qualify_for_ecmp - if a fib entry uses a nexthop object it can NOT be coalesced with other fib entries into a multipath route - rt6_duplicate_nexthop - use nexthop_cmp if either fib6_info references a nexthop - addrconf (host routes), RA's and info entries (anything configured via ndisc) does not use nexthop objects - fib6_info_destroy_rcu - put reference to nexthop object - fib6_purge_rt - drop fib6_info from f6i_list - fib6_select_path - update to use the new nexthop_path_fib6_result when fib entry uses a nexthop object - rt6_device_match - update to catch use of nexthop object as a blackhole and set fib6_type and flags. - ip6_route_info_create - don't add space for fib6_nh if fib entry is going to reference a nexthop object, take a reference to nexthop object, disallow use of source routing - rt6_nlmsg_size - add space for RTA_NH_ID - add rt6_fill_node_nexthop to add nexthop data on a dump As with ipv4, most of the changes push existing code into the else branch of whether the fib entry uses a nexthop object. Update the nexthop code to walk f6i_list on a nexthop deleted to remove fib entries referencing it. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-03 20:19:52 -07:00
net/ipv6: Pass net namespace to route functions Pass network namespace reference into route add, delete and get functions. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:11 -07:00
ipv6: ndisc: Convert to dst_neigh_lookup() Now all code paths grab a local reference to the neigh, so if neigh is not NULL we unconditionally release it at the end. The old logic would only release if we didn't have a non-NULL 'rt'. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:07:56 -08:00
ipv6: Make fib6_nh optional at the end of fib6_info Move fib6_nh to the end of fib6_info and make it an array of size 0. Pass a flag to fib6_info_alloc indicating if the allocation needs to add space for a fib6_nh. The current code path always has a fib6_nh allocated with a fib6_info; with nexthop objects they will be separate. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-22 20:27:59 -07:00
net/ipv6: Create a neigh_lookup for FIB entries The router discovery code has a FIB entry and wants to validate the gateway has a neighbor entry. Refactor the existing dst_neigh_lookup for IPv6 and create a new function that takes the gateway and device and returns a neighbor entry. Use the new function in ndisc_router_discovery to validate the gateway. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:21 -07:00
ipv6: ndisc: Convert to dst_neigh_lookup() Now all code paths grab a local reference to the neigh, so if neigh is not NULL we unconditionally release it at the end. The old logic would only release if we didn't have a non-NULL 'rt'. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:07:56 -08:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
net/ipv6: separate handling of FIB entries from dst based routes Last step before flipping the data type for FIB entries: - use fib6_info_alloc to create FIB entries in ip6_route_info_create and addrconf_dst_alloc - use fib6_info_release in place of dst_release, ip6_rt_put and rt6_release - remove the dst_hold before calling __ip6_ins_rt or ip6_del_rt - when purging routes, drop per-cpu routes - replace inc and dec of rt6i_ref with fib6_info_hold and fib6_info_release - use rt->from since it points to the FIB entry - drop references to exception bucket, fib6_metrics and per-cpu from dst entries (those are relevant for fib entries only) Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:25 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
ipv6: ndisc: Convert to dst_neigh_lookup() Now all code paths grab a local reference to the neigh, so if neigh is not NULL we unconditionally release it at the end. The old logic would only release if we didn't have a non-NULL 'rt'. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:07:56 -08:00
net: allow user to set metric on default route learned via Router Advertisement For IPv4, default route is learned via DHCPv4 and user is allowed to change metric using config etc/network/interfaces. But for IPv6, default route can be learned via RA, for which, currently a fixed metric value 1024 is used. Ideally, user should be able to configure metric on default route for IPv6 similar to IPv4. This patch adds sysctl for the same. Logs: For IPv4: Config in etc/network/interfaces: auto eth0 iface eth0 inet dhcp metric 4261413864 IPv4 Kernel Route Table: $ ip route list default via 172.21.47.1 dev eth0 metric 4261413864 FRR Table, if a static route is configured: [In real scenario, it is useful to prefer BGP learned default route over DHCPv4 default route.] Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF, I - IS-IS, B - BGP, P - PIM, E - EIGRP, N - NHRP, T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP, > - selected route, * - FIB route S>* 0.0.0.0/0 [20/0] is directly connected, eth0, 00:00:03 K 0.0.0.0/0 [254/1000] via 172.21.47.1, eth0, 6d08h51m i.e. User can prefer Default Router learned via Routing Protocol in IPv4. Similar behavior is not possible for IPv6, without this fix. After fix [for IPv6]: sudo sysctl -w net.ipv6.conf.eth0.net.ipv6.conf.eth0.ra_defrtr_metric=1996489705 IP monitor: [When IPv6 RA is received] default via fe80::xx16:xxxx:feb3:ce8e dev eth0 proto ra metric 1996489705 pref high Kernel IPv6 routing table $ ip -6 route list default via fe80::be16:65ff:feb3:ce8e dev eth0 proto ra metric 1996489705 expires 21sec hoplimit 64 pref high FRR Table, if a static route is configured: [In real scenario, it is useful to prefer BGP learned default route over IPv6 RA default route.] Codes: K - kernel route, C - connected, S - static, R - RIPng, O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP, > - selected route, * - FIB route S>* ::/0 [20/0] is directly connected, eth0, 00:00:06 K ::/0 [119/1001] via fe80::xx16:xxxx:feb3:ce8e, eth0, 6d07h43m If the metric is changed later, the effect will be seen only when next IPv6 RA is received, because the default route must be fully controlled by RA msg. Below metric is changed from 1996489705 to 1996489704. $ sudo sysctl -w net.ipv6.conf.eth0.ra_defrtr_metric=1996489704 net.ipv6.conf.eth0.ra_defrtr_metric = 1996489704 IP monitor: [On next IPv6 RA msg, Kernel deletes prev route and installs new route with updated metric] Deleted default via fe80::xx16:xxxx:feb3:ce8e dev eth0 proto ra metric 1996489705 expires 3sec hoplimit 64 pref high default via fe80::xx16:xxxx:feb3:ce8e dev eth0 proto ra metric 1996489704 pref high Signed-off-by: Praveen Chaudhary <pchaudhary@linkedin.com> Signed-off-by: Zhenggen Xu <zxu@linkedin.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20210125214430.24079-1-pchaudhary@linkedin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-25 13:44:30 -08:00
net: ipv6: new arg skip_notify to ip6_rt_del Used in subsequent work to skip route delete notifications on nexthop deletes. Suggested-by: David Ahern <dsahern@gmail.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-27 13:56:45 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: fix potential refcount leak in ndisc_router_discovery() The issue happens on specific paths in the function. After both the object `rt` and `neigh` are grabbed successfully, when `lifetime` is nonzero but the metric needs change, the function just deletes the route and set `rt` to NULL. Then, it may try grabbing `rt` and `neigh` again if above conditions hold. The function simply overwrite `neigh` if succeeds or returns if fails, without decreasing the reference count of previous `neigh`. This may result in memory leaks. Fix it by decrementing the reference count of `neigh` in place. Fixes: 6b2e04bc240f ("net: allow user to set metric on default route learned via Router Advertisement") Signed-off-by: Xin Xiong <xiongx18@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-08-13 20:49:08 +08:00
net/ipv6: Pass net namespace to route functions Pass network namespace reference into route add, delete and get functions. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:11 -07:00
net/ipv6: set expires in rt6_add_dflt_router(). Pass the duration of a lifetime (in seconds) to the function rt6_add_dflt_router() so that it can properly set the expiration time. The function ndisc_router_discovery() is the only one that calls rt6_add_dflt_router(), and it will later set the expiration time for the route created by rt6_add_dflt_router(). However, there is a gap of time between calling rt6_add_dflt_router() and setting the expiration time in ndisc_router_discovery(). During this period, there is a possibility that a new route may be removed from the routing table. By setting the correct expiration time in rt6_add_dflt_router(), we can prevent this from happening. The reason for setting RTF_EXPIRES in rt6_add_dflt_router() is to start the Garbage Collection (GC) timer, as it only activates when a route with RTF_EXPIRES is added to a table. Suggested-by: David Ahern <dsahern@kernel.org> Reviewed-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-08 14:06:49 -08:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Make fib6_nh optional at the end of fib6_info Move fib6_nh to the end of fib6_info and make it an array of size 0. Pass a flag to fib6_info_alloc indicating if the allocation needs to add space for a fib6_nh. The current code path always has a fib6_nh allocated with a fib6_info; with nexthop objects they will be separate. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-22 20:27:59 -07:00
net/ipv6: Create a neigh_lookup for FIB entries The router discovery code has a FIB entry and wants to validate the gateway has a neighbor entry. Refactor the existing dst_neigh_lookup for IPv6 and create a new function that takes the gateway and device and returns a neighbor entry. Use the new function in ndisc_router_discovery to validate the gateway. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:21 -07:00
ipv6: coding style: comparison for equality with NULL The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 14:00:04 +01:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
net/ipv6: separate handling of FIB entries from dst based routes Last step before flipping the data type for FIB entries: - use fib6_info_alloc to create FIB entries in ip6_route_info_create and addrconf_dst_alloc - use fib6_info_release in place of dst_release, ip6_rt_put and rt6_release - remove the dst_hold before calling __ip6_ins_rt or ip6_del_rt - when purging routes, drop per-cpu routes - replace inc and dec of rt6i_ref with fib6_info_hold and fib6_info_release - use rt->from since it points to the FIB entry - drop references to exception bucket, fib6_metrics and per-cpu from dst entries (those are relevant for fib entries only) Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:25 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
Generate netlink notification when default IPv6 route preference changes Generate RTM_NEWROUTE netlink notification when the route preference changes on an existing kernel generated default route in response to RA messages. Currently netlink notifications are generated only when this route is added or deleted but not when the route preference changes, which can cause userspace routing application state to go out of sync with kernel. Signed-off-by: Kalash Nainwal <kalash@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-10 14:09:35 -08:00
net/ipv6: Rename fib6_info struct elements Change the prefix for fib6_info struct elements from rt6i_ to fib6_. rt6i_pcpu and rt6i_exception_bucket are left as is given that they point to rt6_info entries. Rename only; not functional change intended. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-18 15:38:59 -07:00
Generate netlink notification when default IPv6 route preference changes Generate RTM_NEWROUTE netlink notification when the route preference changes on an existing kernel generated default route in response to RA messages. Currently netlink notifications are generated only when this route is added or deleted but not when the route preference changes, which can cause userspace routing application state to go out of sync with kernel. Signed-off-by: Kalash Nainwal <kalash@arista.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-10 14:09:35 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net/ipv6: Remove expired routes with a separated list of routes. FIB6 GC walks trees of fib6_tables to remove expired routes. Walking a tree can be expensive if the number of routes in a table is big, even if most of them are permanent. Checking routes in a separated list of routes having expiration will avoid this potential issue. Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-08 14:06:51 -08:00
net/ipv6: move expires into rt6_info Add expires to rt6_info for FIB entries, and add fib6 helpers to manage it. Data path use of dst.expires remains. The transition is fairly straightforward: when working with fib entries, rt->dst.expires is just rt->expires, rt6_clean_expires is replaced with fib6_clean_expires, rt6_set_expires becomes fib6_set_expires, and rt6_check_expired becomes fib6_check_expired, where the fib6 versions are added by this patch. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:17 -07:00
net/ipv6: Remove expired routes with a separated list of routes. FIB6 GC walks trees of fib6_tables to remove expired routes. Walking a tree can be expensive if the number of routes in a table is big, even if most of them are permanent. Checking routes in a separated list of routes having expiration will avoid this potential issue. Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-08 14:06:51 -08:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net/ipv6: add sysctl option accept_ra_min_hop_limit Commit 6fd99094de2b ("ipv6: Don't reduce hop limit for an interface") disabled accept hop limit from RA if it is smaller than the current hop limit for security stuff. But this behavior kind of break the RFC definition. RFC 4861, 6.3.4. Processing Received Router Advertisements A Router Advertisement field (e.g., Cur Hop Limit, Reachable Time, and Retrans Timer) may contain a value denoting that it is unspecified. In such cases, the parameter should be ignored and the host should continue using whatever value it is already using. If the received Cur Hop Limit value is non-zero, the host SHOULD set its CurHopLimit variable to the received value. So add sysctl option accept_ra_min_hop_limit to let user choose the minimum hop limit value they can accept from RA. And set default to 1 to meet RFC standards. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Acked-by: YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-30 14:28:42 +08:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net/ipv6: move metrics from dst to rt6_info Similar to IPv4, add fib metrics to the fib struct, which at the moment is rt6_info. Will be moved to fib6_info in a later patch. Copy metrics into dst by reference using refcount. To make the transition: - add dst_metrics to rt6_info. Default to dst_default_metrics if no metrics are passed during route add. No need for a separate pmtu entry; it can reference the MTU slot in fib6_metrics - ip6_convert_metrics allocates memory in the FIB entry and uses ip_metrics_convert to copy from netlink attribute to metrics entry - the convert metrics call is done in ip6_route_info_create simplifying the route add path + fib6_commit_metrics and fib6_copy_metrics and the temporary mx6_config are no longer needed - add fib6_metric_set helper to change the value of a metric in the fib entry since dst_metric_set can no longer be used - cow_metrics for IPv6 can drop to dst_cow_metrics_generic - rt6_dst_from_metrics_check is no longer needed - rt6_fill_node needs the FIB entry and dst as separate arguments to keep compatibility with existing output. Current dst address is renamed to dest. (to be consistent with IPv4 rt6_fill_node really should be split into 2 functions similar to fib_dump_info and rt_fill_info) - rt6_fill_node no longer needs the temporary metrics variable Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:16 -07:00
ipv6: Don't reduce hop limit for an interface A local route may have a lower hop_limit set than global routes do. RFC 3756, Section 4.2.7, "Parameter Spoofing" > 1. The attacker includes a Current Hop Limit of one or another small > number which the attacker knows will cause legitimate packets to > be dropped before they reach their destination. > As an example, one possible approach to mitigate this threat is to > ignore very small hop limits. The nodes could implement a > configurable minimum hop limit, and ignore attempts to set it below > said limit. Signed-off-by: D.S. Ljungmark <ljungmark@modio.se> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-25 09:28:15 +01:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: Don't reduce hop limit for an interface A local route may have a lower hop_limit set than global routes do. RFC 3756, Section 4.2.7, "Parameter Spoofing" > 1. The attacker includes a Current Hop Limit of one or another small > number which the attacker knows will cause legitimate packets to > be dropped before they reach their destination. > As an example, one possible approach to mitigate this threat is to > ignore very small hop limits. The nodes could implement a > configurable minimum hop limit, and ignore attempts to set it below > said limit. Signed-off-by: D.S. Ljungmark <ljungmark@modio.se> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-25 09:28:15 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: ROUTE: Add accept_ra_defrtr sysctl. This controls whether we accept default router information in RAs. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:55:08 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: support smaller retrans_time settting Currently, we limited the retrans_time to be greater than HZ/2. i.e. setting retrans_time less than 500ms will not work. This makes the user unable to achieve a more accurate control for bonding arp fast failover. Update the sanity check to HZ/100, which is 10ms, to let users have more ability on the retrans_time control. v3: sync the behavior with IPv6 and update all the timer handler v2: use HZ instead of hard code number Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-01 14:46:20 +08:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: send only one NEWLINK when RA causes changes Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-01 01:57:30 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: convert parms to an array This patch converts the neigh param members to an array. This allows easier manipulation which will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:53 +01:00
neighbour: Annotate access to neigh_parms fields. NEIGH_VAR() is read locklessly in the fast path, and IPv6 ndisc uses NEIGH_VAR_SET() locklessly. The next patch will convert neightbl_dump_info() to RCU. Let's annotate accesses to neigh_param with READ_ONCE() and WRITE_ONCE(). Note that ndisc_ifinfo_sysctl_change() uses &NEIGH_VAR() and we cannot use '&' with READ_ONCE(), so NEIGH_VAR_PTR() is introduced. Note also that NEIGH_VAR_INIT() does not need WRITE_ONCE() as it is before parms is published. Also, the only user hippi_neigh_setup_dev() is no longer called since commit e3804cbebb67 ("net: remove COMPAT_NET_DEV_OPS"), which looks wrong, but probably no one uses HIPPI and RoadRunner. Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20251022054004.2514876-3-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-10-22 05:39:46 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: send only one NEWLINK when RA causes changes Signed-off-by: Marius Tomaschewski <mt@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-01 01:57:30 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: Update Neighbor Cache when IPv6 RA is received on a router When processing a received IPv6 Router Advertisement, the kernel creates or updates an IPv6 Neighbor Cache entry for the sender -- but presently this does not occur if IPv6 forwarding is enabled (net.ipv6.conf.*.forwarding = 1), or if IPv6 Router Advertisements are not accepted (net.ipv6.conf.*.accept_ra = 0), because in these cases processing of the Router Advertisement has already halted. This patch allows the Neighbor Cache to be updated in these cases, while still avoiding any modification to routes or link parameters. This continues to satisfy RFC 4861, since any entry created in the Neighbor Cache as the result of a received Router Advertisement is still placed in the STALE state. Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-29 00:04:09 -07:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
ipv6: Update Neighbor Cache when IPv6 RA is received on a router When processing a received IPv6 Router Advertisement, the kernel creates or updates an IPv6 Neighbor Cache entry for the sender -- but presently this does not occur if IPv6 forwarding is enabled (net.ipv6.conf.*.forwarding = 1), or if IPv6 Router Advertisements are not accepted (net.ipv6.conf.*.accept_ra = 0), because in these cases processing of the Router Advertisement has already halted. This patch allows the Neighbor Cache to be updated in these cases, while still avoiding any modification to routes or link parameters. This continues to satisfy RFC 4861, since any entry created in the Neighbor Cache as the result of a received Router Advertisement is still placed in the STALE state. Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-29 00:04:09 -07:00
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
ipv6: fix the check when handle RA d9333196572(ipv6: Allow accepting RA from local IP addresses.) made the wrong check, whether or not to accept RA with source-addr found on local machine, when accept_ra_from_local is 0. Fixes: d9333196572(ipv6: Allow accepting RA from local IP addresses.) Cc: Ben Greear <greearb@candelatech.com> Cc: Hannes Frederic Sowa <hannes@redhat.com> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 18:02:46 +08:00
ipv6: honor ifindex in case we receive ll addresses in router advertisements Marc Haber reported we don't honor interface indexes when we receive link local router addresses in router advertisements. Luckily the non-strict version of ipv6_chk_addr already does the correct job here, so we can simply use it to lighten the checks and use those addresses by default without any configuration change. Link: <http://permalink.gmane.org/gmane.linux.network/391348> Reported-by: Marc Haber <mh+netdev@zugschlus.de> Cc: Marc Haber <mh+netdev@zugschlus.de> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-23 22:44:37 +01:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: Do not use routes from locally generated RAs When hybrid mode is enabled (accept_ra == 2), the kernel also sees RAs generated locally. This is useful since it allows the kernel to auto-configure its own interface addresses. However, if 'accept_ra_defrtr' and/or 'accept_ra_rtr_pref' are set and the locally generated RAs announce the default route and/or other route information, the kernel happily inserts bogus routes with its own address as gateway. With this patch, adding routes from an RA will be skiped when the RAs source address matches any local address, just as if 'accept_ra_defrtr' and 'accept_ra_rtr_pref' were set to 0. Signed-off-by: Andreas Hofmeister <andi@collax.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-24 19:13:15 -04:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
ipv6: Do not use routes from locally generated RAs When hybrid mode is enabled (accept_ra == 2), the kernel also sees RAs generated locally. This is useful since it allows the kernel to auto-configure its own interface addresses. However, if 'accept_ra_defrtr' and/or 'accept_ra_rtr_pref' are set and the locally generated RAs announce the default route and/or other route information, the kernel happily inserts bogus routes with its own address as gateway. With this patch, adding routes from an RA will be skiped when the RAs source address matches any local address, just as if 'accept_ra_defrtr' and 'accept_ra_rtr_pref' were set to 0. Signed-off-by: Andreas Hofmeister <andi@collax.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-24 19:13:15 -04:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
[IPV6] NDISC: Ignore route information with /0 prefix from interior router. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:56:52 -04:00
ipv6: judge the accept_ra_defrtr before calling rt6_route_rcv when dealing with a RA message, if accept_ra_defrtr is false, the kernel will not add the default route, and then deal with the following route information options. Unfortunately, those options maybe contain default route, so let's judge the accept_ra_defrtr before calling rt6_route_rcv. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-26 15:46:56 +08:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
ipv6: judge the accept_ra_defrtr before calling rt6_route_rcv when dealing with a RA message, if accept_ra_defrtr is false, the kernel will not add the default route, and then deal with the following route information options. Unfortunately, those options maybe contain default route, so let's judge the accept_ra_defrtr before calling rt6_route_rcv. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-26 15:46:56 +08:00
net: change accept_ra_min_rtr_lft to affect all RA lifetimes accept_ra_min_rtr_lft only considered the lifetime of the default route and discarded entire RAs accordingly. This change renames accept_ra_min_rtr_lft to accept_ra_min_lft, and applies the value to individual RA sections; in particular, router lifetime, PIO preferred lifetime, and RIO lifetime. If any of those lifetimes are lower than the configured value, the specific RA section is ignored. In order for the sysctl to be useful to Android, it should really apply to all lifetimes in the RA, since that is what determines the minimum frequency at which RAs must be processed by the kernel. Android uses hardware offloads to drop RAs for a fraction of the minimum of all lifetimes present in the RA (some networks have very frequent RAs (5s) with high lifetimes (2h)). Despite this, we have encountered networks that set the router lifetime to 30s which results in very frequent CPU wakeups. Instead of disabling IPv6 (and dropping IPv6 ethertype in the WiFi firmware) entirely on such networks, it seems better to ignore the misconfigured routers while still processing RAs from other IPv6 routers on the same network (i.e. to support IoT applications). The previous implementation dropped the entire RA based on router lifetime. This turned out to be hard to expand to the other lifetimes present in the RA in a consistent manner; dropping the entire RA based on RIO/PIO lifetimes would essentially require parsing the whole thing twice. Fixes: 1671bcfd76fd ("net: add sysctl accept_ra_min_rtr_lft") Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Patrick Rohr <prohr@google.com> Reviewed-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20230726230701.919212-1-prohr@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-07-26 16:07:01 -07:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net: change accept_ra_min_rtr_lft to affect all RA lifetimes accept_ra_min_rtr_lft only considered the lifetime of the default route and discarded entire RAs accordingly. This change renames accept_ra_min_rtr_lft to accept_ra_min_lft, and applies the value to individual RA sections; in particular, router lifetime, PIO preferred lifetime, and RIO lifetime. If any of those lifetimes are lower than the configured value, the specific RA section is ignored. In order for the sysctl to be useful to Android, it should really apply to all lifetimes in the RA, since that is what determines the minimum frequency at which RAs must be processed by the kernel. Android uses hardware offloads to drop RAs for a fraction of the minimum of all lifetimes present in the RA (some networks have very frequent RAs (5s) with high lifetimes (2h)). Despite this, we have encountered networks that set the router lifetime to 30s which results in very frequent CPU wakeups. Instead of disabling IPv6 (and dropping IPv6 ethertype in the WiFi firmware) entirely on such networks, it seems better to ignore the misconfigured routers while still processing RAs from other IPv6 routers on the same network (i.e. to support IoT applications). The previous implementation dropped the entire RA based on router lifetime. This turned out to be hard to expand to the other lifetimes present in the RA in a consistent manner; dropping the entire RA based on RIO/PIO lifetimes would essentially require parsing the whole thing twice. Fixes: 1671bcfd76fd ("net: add sysctl accept_ra_min_rtr_lft") Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Patrick Rohr <prohr@google.com> Reviewed-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20230726230701.919212-1-prohr@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-07-26 16:07:01 -07:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
net: ipv6: Add sysctl for minimum prefix len acceptable in RIOs. This commit adds a new sysctl accept_ra_rt_info_min_plen that defines the minimum acceptable prefix length of Route Information Options. The new sysctl is intended to be used together with accept_ra_rt_info_max_plen to configure a range of acceptable prefix lengths. It is useful to prevent misconfigurations from unintentionally blackholing too much of the IPv6 address space (e.g., home routers announcing RIOs for fc00::/7, which is incorrect). Signed-off-by: Joel Scherpelz <jscherpelz@google.com> Acked-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-22 18:19:04 +09:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
[IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:07:03 -08:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
ipv6: Do not use routes from locally generated RAs When hybrid mode is enabled (accept_ra == 2), the kernel also sees RAs generated locally. This is useful since it allows the kernel to auto-configure its own interface addresses. However, if 'accept_ra_defrtr' and/or 'accept_ra_rtr_pref' are set and the locally generated RAs announce the default route and/or other route information, the kernel happily inserts bogus routes with its own address as gateway. With this patch, adding routes from an RA will be skiped when the RAs source address matches any local address, just as if 'accept_ra_defrtr' and 'accept_ra_rtr_pref' were set to 0. Signed-off-by: Andreas Hofmeister <andi@collax.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-24 19:13:15 -04:00
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
ipv6: Add more debugging around accept-ra logic. This is disabled by default, just like similar debug info already in this module. But, makes it easier to find out why RA is not being accepted when debugging strange behaviour. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 14:44:52 -07:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Check RA for sllao when configuring optimistic ipv6 address (v2) Recently Dave noticed that a test we did in ipv6_add_addr to see if we next hop route for the interface we're adding an addres to was wrong (see commit 7ffbcecbeed91e5874e9a1cfc4c0cbb07dac3069). for one, it never triggers, and two, it was completely wrong to begin with. This test was meant to cover this section of RFC 4429: 3.3 Modifications to RFC 2462 Stateless Address Autoconfiguration * (modifies section 5.5) A host MAY choose to configure a new address as an Optimistic Address. A host that does not know the SLLAO of its router SHOULD NOT configure a new address as Optimistic. A router SHOULD NOT configure an Optimistic Address. This patch should bring us into proper compliance with the above clause. Since we only add a SLAAC address after we've received a RA which may or may not contain a source link layer address option, we can pass a pointer to that option to addrconf_prefix_rcv (which may be null if the option is not present), and only set the optimistic flag if the option was found in the RA. Change notes: (v2) modified the new parameter to addrconf_prefix_rcv to be a bool rather than a pointer to make its use more clear as per request from davem. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-04 10:49:15 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: annotate data-races in ndisc_router_discovery() Annotate reads from in6_dev->cnf.XXX fields, as they could change concurrently. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:31 +00:00
[IPV6]: Misc endianness annotations. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-14 20:56:00 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: White-space cleansing : Line Layouts This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-24 21:53:10 +01:00
[IPV6]: Misc endianness annotations. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-14 20:56:00 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: annotate data-race in ndisc_router_discovery() syzbot found that ndisc_router_discovery() could read and write in6_dev->ra_mtu without holding a lock [1] This looks fine, IFLA_INET6_RA_MTU is best effort. Add READ_ONCE()/WRITE_ONCE() to document the race. Note that we might also reject illegal MTU values (mtu < IPV6_MIN_MTU || mtu > skb->dev->mtu) in a future patch. [1] BUG: KCSAN: data-race in ndisc_router_discovery / ndisc_router_discovery read to 0xffff888119809c20 of 4 bytes by task 25817 on cpu 1: ndisc_router_discovery+0x151d/0x1c90 net/ipv6/ndisc.c:1558 ndisc_rcv+0x2ad/0x3d0 net/ipv6/ndisc.c:1841 icmpv6_rcv+0xe5a/0x12f0 net/ipv6/icmp.c:989 ip6_protocol_deliver_rcu+0xb2a/0x10d0 net/ipv6/ip6_input.c:438 ip6_input_finish+0xf0/0x1d0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x5e/0x140 net/ipv6/ip6_input.c:500 ip6_mc_input+0x27c/0x470 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x336/0x340 net/ipv6/ip6_input.c:79 ... write to 0xffff888119809c20 of 4 bytes by task 25816 on cpu 0: ndisc_router_discovery+0x155a/0x1c90 net/ipv6/ndisc.c:1559 ndisc_rcv+0x2ad/0x3d0 net/ipv6/ndisc.c:1841 icmpv6_rcv+0xe5a/0x12f0 net/ipv6/icmp.c:989 ip6_protocol_deliver_rcu+0xb2a/0x10d0 net/ipv6/ip6_input.c:438 ip6_input_finish+0xf0/0x1d0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x5e/0x140 net/ipv6/ip6_input.c:500 ip6_mc_input+0x27c/0x470 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x336/0x340 net/ipv6/ip6_input.c:79 ... value changed: 0x00000000 -> 0xe5400659 Fixes: 49b99da2c9ce ("ipv6: add IFLA_INET6_RA_MTU to expose mtu value") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Rocco Yue <rocco.yue@mediatek.com> Link: https://patch.msgid.link/20260118152941.2563857-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-18 15:29:41 +00:00
ipv6: add IFLA_INET6_RA_MTU to expose mtu value The kernel provides a "/proc/sys/net/ipv6/conf/<iface>/mtu" file, which can temporarily record the mtu value of the last received RA message when the RA mtu value is lower than the interface mtu, but this proc has following limitations: (1) when the interface mtu (/sys/class/net/<iface>/mtu) is updeated, mtu6 (/proc/sys/net/ipv6/conf/<iface>/mtu) will be updated to the value of interface mtu; (2) mtu6 (/proc/sys/net/ipv6/conf/<iface>/mtu) only affect ipv6 connection, and not affect ipv4. Therefore, when the mtu option is carried in the RA message, there will be a problem that the user sometimes cannot obtain RA mtu value correctly by reading mtu6. After this patch set, if a RA message carries the mtu option, you can send a netlink msg which nlmsg_type is RTM_GETLINK, and then by parsing the attribute of IFLA_INET6_RA_MTU to get the mtu value carried in the RA message received on the inet6 device. In addition, you can also get a link notification when ra_mtu is updated so it doesn't have to poll. In this way, if the MTU values that the device receives from the network in the PCO IPv4 and the RA IPv6 procedures are different, the user can obtain the correct ipv6 ra_mtu value and compare the value of ra_mtu and ipv4 mtu, then the device can use the lower MTU value for both IPv4 and IPv6. Signed-off-by: Rocco Yue <rocco.yue@mediatek.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20210827150412.9267-1-rocco.yue@mediatek.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-08-27 23:04:12 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: annotate data-races around cnf.mtu6 idev->cnf.mtu6 might be read locklessly, add appropriate READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:28 +00:00
net/ipv6: move metrics from dst to rt6_info Similar to IPv4, add fib metrics to the fib struct, which at the moment is rt6_info. Will be moved to fib6_info in a later patch. Copy metrics into dst by reference using refcount. To make the transition: - add dst_metrics to rt6_info. Default to dst_default_metrics if no metrics are passed during route add. No need for a separate pmtu entry; it can reference the MTU slot in fib6_metrics - ip6_convert_metrics allocates memory in the FIB entry and uses ip_metrics_convert to copy from netlink attribute to metrics entry - the convert metrics call is done in ip6_route_info_create simplifying the route add path + fib6_commit_metrics and fib6_copy_metrics and the temporary mx6_config are no longer needed - add fib6_metric_set helper to change the value of a metric in the fib entry since dst_metric_set can no longer be used - cow_metrics for IPv6 can drop to dst_cow_metrics_generic - rt6_dst_from_metrics_check is no longer needed - rt6_fill_node needs the FIB entry and dst as separate arguments to keep compatibility with existing output. Current dst address is renamed to dest. (to be consistent with IPv4 rt6_fill_node really should be split into 2 functions similar to fib_dump_info and rt_fill_info) - rt6_fill_node no longer needs the temporary metrics variable Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:16 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
[IPV6] NDISC: Sparse: Use different variable name for local use. Fix the following sparse warnings: | net/ipv6/ndisc.c:1300:21: warning: symbol 'opt' shadows an earlier one | net/ipv6/ndisc.c:1078:7: originally declared here Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-01-22 17:32:53 +09:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
[IPV6] NDISC: Sparse: Use different variable name for local use. Fix the following sparse warnings: | net/ipv6/ndisc.c:1300:21: warning: symbol 'opt' shadows an earlier one | net/ipv6/ndisc.c:1078:7: originally declared here Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-01-22 17:32:53 +09:00
[IPv6]: Export userland ND options through netlink (RDNSS support) As discussed before, this patch provides userland with a way to access relevant options in Router Advertisements, after they are processed and validated by the kernel. Extra options are processed in a generic way; this patch only exports RDNSS options described in RFC5006, but support to control which options are exported could be easily added. A new rtnetlink message type is defined, to transport Neighbor Discovery options, along with optional context information. At the moment only the address of the router sending an RDNSS option is included, but additional attributes may be later defined, if needed by new use cases. Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:22:05 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: add IFLA_INET6_RA_MTU to expose mtu value The kernel provides a "/proc/sys/net/ipv6/conf/<iface>/mtu" file, which can temporarily record the mtu value of the last received RA message when the RA mtu value is lower than the interface mtu, but this proc has following limitations: (1) when the interface mtu (/sys/class/net/<iface>/mtu) is updeated, mtu6 (/proc/sys/net/ipv6/conf/<iface>/mtu) will be updated to the value of interface mtu; (2) mtu6 (/proc/sys/net/ipv6/conf/<iface>/mtu) only affect ipv6 connection, and not affect ipv4. Therefore, when the mtu option is carried in the RA message, there will be a problem that the user sometimes cannot obtain RA mtu value correctly by reading mtu6. After this patch set, if a RA message carries the mtu option, you can send a netlink msg which nlmsg_type is RTM_GETLINK, and then by parsing the attribute of IFLA_INET6_RA_MTU to get the mtu value carried in the RA message received on the inet6 device. In addition, you can also get a link notification when ra_mtu is updated so it doesn't have to poll. In this way, if the MTU values that the device receives from the network in the PCO IPv4 and the RA IPv6 procedures are different, the user can obtain the correct ipv6 ra_mtu value and compare the value of ra_mtu and ipv4 mtu, then the device can use the lower MTU value for both IPv4 and IPv6. Signed-off-by: Rocco Yue <rocco.yue@mediatek.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20210827150412.9267-1-rocco.yue@mediatek.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-08-27 23:04:12 +08:00
net/ipv6: separate handling of FIB entries from dst based routes Last step before flipping the data type for FIB entries: - use fib6_info_alloc to create FIB entries in ip6_route_info_create and addrconf_dst_alloc - use fib6_info_release in place of dst_release, ip6_rt_put and rt6_release - remove the dst_hold before calling __ip6_ins_rt or ip6_del_rt - when purging routes, drop per-cpu routes - replace inc and dec of rt6i_ref with fib6_info_hold and fib6_info_release - use rt->from since it points to the FIB entry - drop references to exception bucket, fib6_metrics and per-cpu from dst entries (those are relevant for fib entries only) Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 17:33:25 -07:00
ipv6: ndisc: Convert to dst_neigh_lookup() Now all code paths grab a local reference to the neigh, so if neigh is not NULL we unconditionally release it at the end. The old logic would only release if we didn't have a non-NULL 'rt'. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:07:56 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Change skb->data before using icmpv6_notify() to propagate redirect In function ndisc_redirect_rcv(), the skb->data points to the transport header, but function icmpv6_notify() need the skb->data points to the inner IP packet. So before using icmpv6_notify() to propagate redirect, change skb->data to point the inner IP packet that triggered the sending of the Redirect, and introduce struct rd_msg to make it easy. Signed-off-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-14 02:59:59 +00:00
ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header This corrects an regression introduced by "net: Use 16bits for *_headers fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In that case skb->tail will be a pointer whereas skb->transport_header will be an offset from head. This is corrected by using wrappers that ensure that comparisons and calculations are always made using pointers. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28 20:34:26 +00:00
ipv6: Change skb->data before using icmpv6_notify() to propagate redirect In function ndisc_redirect_rcv(), the skb->data points to the transport header, but function icmpv6_notify() need the skb->data points to the inner IP packet. So before using icmpv6_notify() to propagate redirect, change skb->data to point the inner IP packet that triggered the sending of the Redirect, and introduce struct rd_msg to make it easy. Signed-off-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-14 02:59:59 +00:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
ipv6: Change skb->data before using icmpv6_notify() to propagate redirect In function ndisc_redirect_rcv(), the skb->data points to the transport header, but function icmpv6_notify() need the skb->data points to the inner IP packet. So before using icmpv6_notify() to propagate redirect, change skb->data to point the inner IP packet that triggered the sending of the Redirect, and introduce struct rd_msg to make it easy. Signed-off-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-14 02:59:59 +00:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
[IPV6] NDISC: Don't rely on node-type hint from L2 unless required. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-15 23:59:18 -04:00
[IPV6] SIT: Add PRL management for ISATAP. This patch updates the Linux the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) implementation. It places the ISATAP potential router list (PRL) in the kernel and adds three new private ioctls for PRL management. [Add several changes of structure name, constant names etc. - yoshfuji] Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-11 18:35:59 -04:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
ipv6: icmp6: add SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS This is a generic drop reason for any error detected in ndisc_parse_options(). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:40 +00:00
ipv6: Change skb->data before using icmpv6_notify() to propagate redirect In function ndisc_redirect_rcv(), the skb->data points to the transport header, but function icmpv6_notify() need the skb->data points to the inner IP packet. So before using icmpv6_notify() to propagate redirect, change skb->data to point the inner IP packet that triggered the sending of the Redirect, and introduce struct rd_msg to make it easy. Signed-off-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-14 02:59:59 +00:00
ipv6: handle Redirect ICMP Message with no Redirected Header option rfc 4861 says the Redirected Header option is optional, so the kernel should not drop the Redirect Message that has no Redirected Header option. In this patch, the function ip6_redirect_no_header() is introduced to deal with that condition. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
2013-08-22 12:07:35 +08:00
ipv6:introduce function to find route for redirect RFC 4861 says that the IP source address of the Redirect is the same as the current first-hop router for the specified ICMP Destination Address, so the gateway should be taken into consideration when we find the route for redirect. There was once a check in commit a6279458c534d01ccc39498aba61c93083ee0372 ("NDISC: Search over all possible rules on receipt of redirect.") and the check went away in commit b94f1c0904da9b8bf031667afc48080ba7c3e8c9 ("ipv6: Use icmpv6_notify() to propagate redirect, instead of rt6_redirect()"). The bug is only "exploitable" on layer-2 because the source address of the redirect is checked to be a valid link-local address but it makes spoofing a lot easier in the same L2 domain nonetheless. Thanks very much for Hannes's help. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-04 19:44:21 +08:00
net: remove 1 always zero parameter from ip6_redirect_no_header() (the parameter in question is mark) Signed-off-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-29 23:44:50 -07:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
ipv6: handle Redirect ICMP Message with no Redirected Header option rfc 4861 says the Redirected Header option is optional, so the kernel should not drop the Redirect Message that has no Redirected Header option. In this patch, the function ip6_redirect_no_header() is introduced to deal with that condition. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
2013-08-22 12:07:35 +08:00
ipv6: Change skb->data before using icmpv6_notify() to propagate redirect In function ndisc_redirect_rcv(), the skb->data points to the transport header, but function icmpv6_notify() need the skb->data points to the inner IP packet. So before using icmpv6_notify() to propagate redirect, change skb->data to point the inner IP packet that triggered the sending of the Redirect, and introduce struct rd_msg to make it easy. Signed-off-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-14 02:59:59 +00:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
ipv6: Change skb->data before using icmpv6_notify() to propagate redirect In function ndisc_redirect_rcv(), the skb->data points to the transport header, but function icmpv6_notify() need the skb->data points to the inner IP packet. So before using icmpv6_notify() to propagate redirect, change skb->data to point the inner IP packet that triggered the sending of the Redirect, and introduce struct rd_msg to make it easy. Signed-off-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-14 02:59:59 +00:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Make ndisc_fill_xxx_option() for sk_buff. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:53 +00:00
ndisc: Introduce ndisc_fill_redirect_hdr_option(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:09 +00:00
ndisc: Make ndisc_fill_xxx_option() for sk_buff. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:53 +00:00
ndisc: Introduce ndisc_fill_redirect_hdr_option(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:09 +00:00
ipv6: fix access to non-linear packet in ndisc_fill_redirect_hdr_option() Fix the following slab-out-of-bounds kasan report in ndisc_fill_redirect_hdr_option when the incoming ipv6 packet is not linear and the accessed data are not in the linear data region of orig_skb. [ 1503.122508] ================================================================== [ 1503.122832] BUG: KASAN: slab-out-of-bounds in ndisc_send_redirect+0x94e/0x990 [ 1503.123036] Read of size 1184 at addr ffff8800298ab6b0 by task netperf/1932 [ 1503.123220] CPU: 0 PID: 1932 Comm: netperf Not tainted 4.16.0-rc2+ #124 [ 1503.123347] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-2.fc27 04/01/2014 [ 1503.123527] Call Trace: [ 1503.123579] <IRQ> [ 1503.123638] print_address_description+0x6e/0x280 [ 1503.123849] kasan_report+0x233/0x350 [ 1503.123946] memcpy+0x1f/0x50 [ 1503.124037] ndisc_send_redirect+0x94e/0x990 [ 1503.125150] ip6_forward+0x1242/0x13b0 [...] [ 1503.153890] Allocated by task 1932: [ 1503.153982] kasan_kmalloc+0x9f/0xd0 [ 1503.154074] __kmalloc_track_caller+0xb5/0x160 [ 1503.154198] __kmalloc_reserve.isra.41+0x24/0x70 [ 1503.154324] __alloc_skb+0x130/0x3e0 [ 1503.154415] sctp_packet_transmit+0x21a/0x1810 [ 1503.154533] sctp_outq_flush+0xc14/0x1db0 [ 1503.154624] sctp_do_sm+0x34e/0x2740 [ 1503.154715] sctp_primitive_SEND+0x57/0x70 [ 1503.154807] sctp_sendmsg+0xaa6/0x1b10 [ 1503.154897] sock_sendmsg+0x68/0x80 [ 1503.154987] ___sys_sendmsg+0x431/0x4b0 [ 1503.155078] __sys_sendmsg+0xa4/0x130 [ 1503.155168] do_syscall_64+0x171/0x3f0 [ 1503.155259] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1503.155436] Freed by task 1932: [ 1503.155527] __kasan_slab_free+0x134/0x180 [ 1503.155618] kfree+0xbc/0x180 [ 1503.155709] skb_release_data+0x27f/0x2c0 [ 1503.155800] consume_skb+0x94/0xe0 [ 1503.155889] sctp_chunk_put+0x1aa/0x1f0 [ 1503.155979] sctp_inq_pop+0x2f8/0x6e0 [ 1503.156070] sctp_assoc_bh_rcv+0x6a/0x230 [ 1503.156164] sctp_inq_push+0x117/0x150 [ 1503.156255] sctp_backlog_rcv+0xdf/0x4a0 [ 1503.156346] __release_sock+0x142/0x250 [ 1503.156436] release_sock+0x80/0x180 [ 1503.156526] sctp_sendmsg+0xbb0/0x1b10 [ 1503.156617] sock_sendmsg+0x68/0x80 [ 1503.156708] ___sys_sendmsg+0x431/0x4b0 [ 1503.156799] __sys_sendmsg+0xa4/0x130 [ 1503.156889] do_syscall_64+0x171/0x3f0 [ 1503.156980] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1503.157158] The buggy address belongs to the object at ffff8800298ab600 which belongs to the cache kmalloc-1024 of size 1024 [ 1503.157444] The buggy address is located 176 bytes inside of 1024-byte region [ffff8800298ab600, ffff8800298aba00) [ 1503.157702] The buggy address belongs to the page: [ 1503.157820] page:ffffea0000a62a00 count:1 mapcount:0 mapping:0000000000000000 index:0x0 compound_mapcount: 0 [ 1503.158053] flags: 0x4000000000008100(slab|head) [ 1503.158171] raw: 4000000000008100 0000000000000000 0000000000000000 00000001800e000e [ 1503.158350] raw: dead000000000100 dead000000000200 ffff880036002600 0000000000000000 [ 1503.158523] page dumped because: kasan: bad access detected [ 1503.158698] Memory state around the buggy address: [ 1503.158816] ffff8800298ab900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 1503.158988] ffff8800298ab980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 1503.159165] >ffff8800298aba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1503.159338] ^ [ 1503.159436] ffff8800298aba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1503.159610] ffff8800298abb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1503.159785] ================================================================== [ 1503.159964] Disabling lock debugging due to kernel taint The test scenario to trigger the issue consists of 4 devices: - H0: data sender, connected to LAN0 - H1: data receiver, connected to LAN1 - GW0 and GW1: routers between LAN0 and LAN1. Both of them have an ethernet connection on LAN0 and LAN1 On H{0,1} set GW0 as default gateway while on GW0 set GW1 as next hop for data from LAN0 to LAN1. Moreover create an ip6ip6 tunnel between H0 and H1 and send 3 concurrent data streams (TCP/UDP/SCTP) from H0 to H1 through ip6ip6 tunnel (send buffer size is set to 16K). While data streams are active flush the route cache on HA multiple times. I have not been able to identify a given commit that introduced the issue since, using the reproducer described above, the kasan report has been triggered from 4.14 and I have not gone back further. Reported-by: Jianlin Shi <jishi@redhat.com> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-08 17:00:02 +01:00
ndisc: Introduce ndisc_fill_redirect_hdr_option(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:09 +00:00
ipv6: Remove neigh argument from ndisc_send_redirect() Instead, compute it as-needed inside of that function using dst_neigh_lookup(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:30:48 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
ndisc: ndisc_send_redirect() cleanup ndisc_send_redirect() is always called under rcu_read_lock(). It can use dev_net_rcu() and avoid one redundant rcu_read_lock()/rcu_read_unlock() pair. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250214140705.2105890-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 14:07:05 +00:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
ndisc: Calculate message body length and option length separately. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:49 +00:00
inet: Create and use rt{,6}_get_peer_create(). There's a lot of places that open-code rt{,6}_get_peer() only because they want to set 'create' to one. So add an rt{,6}_get_peer_create() for their sake. There were also a few spots open-coding plain rt{,6}_get_peer() and those are transformed here as well. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-08 23:24:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Use struct rd_msg for redirect message. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-05 16:34:51 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Convert to use flowi6 where applicable. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 16:22:43 -05:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
inet: Minimize use of cached route inetpeer. Only use it in the absolutely required cases: 1) COW'ing metrics 2) ipv4 PMTU 3) ipv4 redirects Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 03:58:16 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: ndisc_send_redirect() cleanup ndisc_send_redirect() is always called under rcu_read_lock(). It can use dev_net_rcu() and avoid one redundant rcu_read_lock()/rcu_read_unlock() pair. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250214140705.2105890-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 14:07:05 +00:00
vrf: check the original netdevice for generating redirect Use the right device to determine if redirect should be sent especially when using vrf. Same as well as when sending the redirect. Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-01 00:05:21 -04:00
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:08:10 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
[IPv6]: Fix ICMPv6 redirect handling with target multicast address When the ICMPv6 Target address is multicast, Linux processes the redirect instead of dropping it. The problem is in this code in ndisc_redirect_rcv(): if (ipv6_addr_equal(dest, target)) { on_link = 1; } else if (!(ipv6_addr_type(target) & IPV6_ADDR_LINKLOCAL)) { ND_PRINTK2(KERN_WARNING "ICMPv6 Redirect: target address is not link-local.\n"); return; } This second check will succeed if the Target address is, for example, FF02::1 because it has link-local scope. Instead, it should be checking if it's a unicast link-local address, as stated in RFC 2461/4861 Section 8.1: - The ICMP Target Address is either a link-local address (when redirected to a router) or the same as the ICMP Destination Address (when redirected to the on-link destination). I know this doesn't explicitly say unicast link-local address, but it's implied. This bug is preventing Linux kernels from achieving IPv6 Logo Phase II certification because of a recent error that was found in the TAHI test suite - Neighbor Disovery suite test 206 (v6LC.2.3.6_G) had the multicast address in the Destination field instead of Target field, so we were passing the test. This won't be the case anymore. The patch below fixes this problem, and also fixes ndisc_send_redirect() to not send an invalid redirect with a multicast address in the Target field. I re-ran the TAHI Neighbor Discovery section to make sure Linux passes all 245 tests now. Signed-off-by: Brian Haley <brian.haley@hp.com> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-08 00:12:05 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
[IPV6]: fix BUG of ndisc_send_redirect() When I tested IPv6 redirect function about kernel 2.6.19.1, and found that the kernel can send redirect packets whose target address is global address, and the target is not the actual endpoint of communication. But the criteria conform to RFC2461, the target address defines as following: Target Address An IP address that is a better first hop to use for he ICMP Destination Address. When the target is the actual endpoint of communication, i.e., the destination is a neighbor, the Target Address field MUST contain the same value as the ICMP Destination Address field. Otherwise the target is a better first-hop router and the Target Address MUST be the router's link-local address so that hosts can uniquely identify routers. According to this definition, when a router redirect to a host, the target address either the better first-hop router's link-local address or the same as the ICMP destination address field. But the function of ndisc_send_redirect() in net/ipv6/ndisc.c, does not check the target address correctly. There is another definition about receive Redirect message in RFC2461: 8.1. Validation of Redirect Messages A host MUST silently discard any received Redirect message that does not satisfy all of the following validity checks: ...... - The ICMP Target Address is either a link-local address (when redirected to a router) or the same as the ICMP Destination Address (when redirected to the on-link destination). ...... And the receive redirect function of ndisc_redirect_rcv() implemented this definition, checks the target address correctly. if (ipv6_addr_equal(dest, target)) { on_link = 1; } else if (!(ipv6_addr_type(target) & IPV6_ADDR_LINKLOCAL)) { ND_PRINTK2(KERN_WARNING "ICMPv6 Redirect: target address is not link-local.\n"); return; } So, I think the send redirect function must check the target address also. Signed-off-by: Li Yewang <lyw@nanjing-fnst.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-01-30 14:33:20 -08:00
ipv6: Convert to use flowi6 where applicable. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 16:22:43 -05:00
net: l3mdev: remove redundant calls A previous patch added l3mdev flow update making these hooks redundant. Remove them. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-10 12:09:57 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Convert to use flowi6 where applicable. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 16:22:43 -05:00
ipv6: ip6_route_output() never returns NULL. ip6_route_output() never returns NULL, so it is wrong to check if the return value is NULL. Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-21 22:10:49 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: ip6_route_output() never returns NULL. ip6_route_output() never returns NULL, so it is wrong to check if the return value is NULL. Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-21 22:10:49 +00:00
ipv6: Convert to use flowi6 where applicable. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 16:22:43 -05:00
xfrm: Return dst directly from xfrm_lookup() Instead of on the stack. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-02 13:27:41 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce dst_rt6_info() helper Instead of (struct rt6_info *)dst casts, we can use : #define dst_rt6_info(_ptr) \ container_of_const(_ptr, struct rt6_info, dst) Some places needed missing const qualifiers : ip6_confirm_neigh(), ipv6_anycast_destination(), ipv6_unicast_destination(), has_gateway() v2: added missing parts (David Ahern) Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-26 15:19:52 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6/ndisc: join error paths Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-06 23:47:37 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
inetpeer: do not get a refcount in inet_getpeer() All inet_getpeer() callers except ip4_frag_init() don't need to acquire a permanent refcount on the inetpeer. They can switch to full RCU protection. Move the refcount_inc_not_zero() into ip4_frag_init(), so that all the other callers no longer have to perform a pair of expensive atomic operations on a possibly contended cache line. inet_putpeer() no longer needs to be exported. After this patch, my DUT can receive 8,400,000 UDP packets per second targeting closed ports, using 50% less cpu cycles than before. Also change two calls to l3mdev_master_ifindex() by l3mdev_master_ifindex_rcu() (Ido ideas) Fixes: 8c2bd38b95f7 ("icmp: change the order of rate limits") Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20241215175629.1248773-5-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-15 17:56:29 +00:00
inetpeer: remove create argument of inet_getpeer_v[46]() All callers of inet_getpeer_v4() and inet_getpeer_v6() want to create an inetpeer. Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20241215175629.1248773-2-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-15 17:56:26 +00:00
inet: Minimize use of cached route inetpeer. Only use it in the absolutely required cases: 1) COW'ing metrics 2) ipv4 PMTU 3) ipv4 redirects Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 03:58:16 -07:00
inetpeer: do not get a refcount in inet_getpeer() All inet_getpeer() callers except ip4_frag_init() don't need to acquire a permanent refcount on the inetpeer. They can switch to full RCU protection. Move the refcount_inc_not_zero() into ip4_frag_init(), so that all the other callers no longer have to perform a pair of expensive atomic operations on a possibly contended cache line. inet_putpeer() no longer needs to be exported. After this patch, my DUT can receive 8,400,000 UDP packets per second targeting closed ports, using 50% less cpu cycles than before. Also change two calls to l3mdev_master_ifindex() by l3mdev_master_ifindex_rcu() (Ido ideas) Fixes: 8c2bd38b95f7 ("icmp: change the order of rate limits") Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20241215175629.1248773-5-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-15 17:56:29 +00:00
inet: Minimize use of cached route inetpeer. Only use it in the absolutely required cases: 1) COW'ing metrics 2) ipv4 PMTU 3) ipv4 redirects Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 03:58:16 -07:00
ipv6/ndisc: join error paths Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-06 23:47:37 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Remove neigh argument from ndisc_send_redirect() Instead, compute it as-needed inside of that function using dst_neigh_lookup(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:30:48 -08:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: Remove neigh argument from ndisc_send_redirect() Instead, compute it as-needed inside of that function using dst_neigh_lookup(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:30:48 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Remove neigh argument from ndisc_send_redirect() Instead, compute it as-needed inside of that function using dst_neigh_lookup(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-27 15:30:48 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Calculate message body length and option length separately. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:49 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Calculate message body length and option length separately. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:49 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Calculate message body length and option length separately. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:49 +00:00
ndisc: Introduce ndisc_alloc_skb() helper. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:14 +00:00
ipv6/ndisc: join error paths Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-06 23:47:37 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
networking: make skb_put & friends return void pointers It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 14:29:21 +02:00
ndisc: Use compound literals to build redirect message. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:25 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: introduce neighbour discovery ops This patch introduces neighbour discovery ops callback structure. The idea is to separate the handling for 6LoWPAN into the 6lowpan module. These callback offers 6lowpan different handling, such as 802.15.4 short address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over 6LoWPANs). Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-15 21:20:23 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ndisc: Introduce ndisc_fill_redirect_hdr_option(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:09 +00:00
ndisc: Make ndisc_fill_xxx_option() for sk_buff. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:53 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: skb->dst accessors Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-02 05:19:30 +00:00
ndisc: Use ndisc_send_skb() for redirect. Reuse dst if one is attached with skb. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:49:03 +00:00
ipv6/ndisc: join error paths Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-06 23:47:37 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: Exempt multicast addresses from five-second neighbor lifetime Commit 58956317c8de ("neighbor: Improve garbage collection") guarantees neighbour table entries a five-second lifetime. Processes which make heavy use of multicast can fill the neighour table with multicast addresses in five seconds. At that point, neighbour entries can't be GC-ed because they aren't five seconds old yet, the kernel log starts to fill up with "neighbor table overflow!" messages, and sends start to fail. This patch allows multicast addresses to be thrown out before they've lived out their five seconds. This makes room for non-multicast addresses and makes messages to all addresses more reliable in these circumstances. Fixes: 58956317c8de ("neighbor: Improve garbage collection") Signed-off-by: Jeff Dike <jdike@akamai.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20201113015815.31397-1-jdike@akamai.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 20:58:15 -05:00
ipv6: drop fragmented ndisc packets by default (RFC 6980) This patch implements RFC6980: Drop fragmented ndisc packets by default. If a fragmented ndisc packet is received the user is informed that it is possible to disable the check. Cc: Fernando Gont <fernando@gont.com.ar> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27 01:36:51 +02:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
ipv6: drop fragmented ndisc packets by default (RFC 6980) This patch implements RFC6980: Drop fragmented ndisc packets by default. If a fragmented ndisc packet is received the user is informed that it is possible to disable the check. Cc: Fernando Gont <fernando@gont.com.ar> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27 01:36:51 +02:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: drop fragmented ndisc packets by default (RFC 6980) This patch implements RFC6980: Drop fragmented ndisc packets by default. If a fragmented ndisc packet is received the user is informed that it is possible to disable the check. Cc: Fernando Gont <fernando@gont.com.ar> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27 01:36:51 +02:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
ipv6: drop fragmented ndisc packets by default (RFC 6980) This patch implements RFC6980: Drop fragmented ndisc packets by default. If a fragmented ndisc packet is received the user is informed that it is possible to disable the check. Cc: Fernando Gont <fernando@gont.com.ar> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27 01:36:51 +02:00
ndisc: Use skb_linearize() instead of pskb_may_pull(skb, skb->len). Suggested by Eric Dumazet <edumazet@google.com>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21 06:48:03 +00:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 18:04:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 18:04:18 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 17:54:47 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6/ndisc: Preserve IPv6 control buffer if protocol error handlers are called Commit a61bbcf28a8c ("[NET]: Store skb->timestamp as offset to a base timestamp") introduces a neighbour control buffer and zeroes it out in ndisc_rcv(), as ndisc_recv_ns() uses it. Commit f2776ff04722 ("[IPV6]: Fix address/interface handling in UDP and DCCP, according to the scoping architecture.") introduces the usage of the IPv6 control buffer in protocol error handlers (e.g. inet6_iif() in present-day __udp6_lib_err()). Now, with commit b94f1c0904da ("ipv6: Use icmpv6_notify() to propagate redirect, instead of rt6_redirect()."), we call protocol error handlers from ndisc_redirect_rcv(), after the control buffer is already stolen and some parts are already zeroed out. This implies that inet6_iif() on this path will always return zero. This gives unexpected results on UDP socket lookup in __udp6_lib_err(), as we might actually need to match sockets for a given interface. Instead of always claiming the control buffer in ndisc_rcv(), do that only when needed. Fixes: b94f1c0904da ("ipv6: Use icmpv6_notify() to propagate redirect, instead of rt6_redirect().") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-24 14:37:21 +02:00
ipv6: icmp6: add drop reason support to ndisc_recv_ns() Change ndisc_recv_ns() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:35 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_na() Change ndisc_recv_na() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:36 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_recv_rs() Change ndisc_recv_rs() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED or SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:37 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_router_discovery() Change ndisc_router_discovery() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and SKB_CONSUMED. More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:38 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_redirect_rcv() Change ndisc_redirect_rcv() to return a drop reason. For the moment, return PKT_TOO_SMALL, NOT_SPECIFIED and values from icmpv6_notify(). More reasons are added later. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-16 16:28:39 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET]: cleanup extra semicolons Spring cleaning time... There seems to be a lot of places in the network code that have extra bogus semicolons after conditionals. Most commonly is a bogus semicolon after: switch() { } Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-20 17:09:22 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: icmp6: add drop reason support to ndisc_rcv() Creates three new drop reasons: SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10 18:47:08 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: pass info struct via netdevice notifier So far, only net_device * could be passed along with netdevice notifier event. This patch provides a possibility to pass custom structure able to provide info that event listener needs to know. Signed-off-by: Jiri Pirko <jiri@resnulli.us> v2->v3: fix typo on simeth shortened dev_getter shortened notifier_info struct name v1->v2: fix notifier_call parameter in call_netdevice_notifier() Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28 01:30:21 +00:00
ipv6: flush nd cache on IFF_NOARP change This patch is the IPv6 equivalent of commit 6c8b4e3ff81b ("arp: flush arp cache on IFF_NOARP change") Without it, we keep buggy neighbours in the cache, with destination MAC address equal to our own MAC address. Tested: tcpdump -i eth0 -s 0 ip6 -n -e & ip link set dev eth0 arp off ping6 remote // sends buggy frames ip link set dev eth0 arp on ping6 remote // should work once kernel is patched Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Mario Fanelli <mariofanelli@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-29 12:01:41 +02:00
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 21:47:49 +09:00
ipv6: add knob to send unsolicited ND on link-layer address change This patch introduces a new knob ndisc_notify. If enabled, the kernel will transmit an unsolicited neighbour advertisement on link-layer address change to update the neighbour tables of the corresponding hosts more quickly. This is the equivalent to arp_notify in ipv4 world. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-06 16:46:20 +00:00
net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter In most situations the neighbor discovery cache should be cleared on a NOCARRIER event which is currently done unconditionally. But for wireless roams the neighbor discovery cache can and should remain intact since the underlying network has not changed. This patch introduces a sysctl option ndisc_evict_nocarrier which can be disabled by a wireless supplicant during a roam. This allows packets to be sent after a roam immediately without having to wait for neighbor discovery. A user reported roughly a 1 second delay after a roam before packets could be sent out (note, on IPv4). This delay was due to the ARP cache being cleared. During testing of this same scenario using IPv6 no delay was noticed, but regardless there is no reason to clear the ndisc cache for wireless roams. Signed-off-by: James Prestwood <prestwoj@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-01 10:36:29 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: prevent fib6_run_gc() contention On a high-traffic router with many processors and many IPv6 dst entries, soft lockup in fib6_run_gc() can occur when number of entries reaches gc_thresh. This happens because fib6_run_gc() uses fib6_gc_lock to allow only one thread to run the garbage collector but ip6_dst_gc() doesn't update net->ipv6.ip6_rt_last_gc until fib6_run_gc() returns. On a system with many entries, this can take some time so that in the meantime, other threads pass the tests in ip6_dst_gc() (ip6_rt_last_gc is still not updated) and wait for the lock. They then have to run the garbage collector one after another which blocks them for quite long. Resolve this by replacing special value ~0UL of expire parameter to fib6_run_gc() by explicit "force" parameter to choose between spin_lock_bh() and spin_trylock_bh() and call fib6_run_gc() with force=false if gc_thresh is reached but not max_size. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-01 10:04:14 +02:00
inet: Use fallthrough; Convert the various uses of fallthrough comments to fallthrough; Done via script Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe@perches.com/ And by hand: net/ipv6/ip6_fib.c has a fallthrough comment outside of an #ifdef block that causes gcc to emit a warning if converted in-place. So move the new fallthrough; inside the containing #ifdef/#endif too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:50:22 -07:00
net: ipv6: send unsolicited NA on admin up ndisc_notify is the ipv6 equivalent to arp_notify. When arp_notify is set to 1, gratuitous arp requests are sent when the device is brought up. The same is expected when ndisc_notify is set to 1 (per ndisc_notify in Documentation/networking/ip-sysctl.txt). The NA is not sent on NETDEV_UP event; add it. Fixes: 5cb04436eef6 ("ipv6: add knob to send unsolicited ND on link-layer address change") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 11:49:04 -07:00
ipv6: add knob to send unsolicited ND on link-layer address change This patch introduces a new knob ndisc_notify. If enabled, the kernel will transmit an unsolicited neighbour advertisement on link-layer address change to update the neighbour tables of the corresponding hosts more quickly. This is the equivalent to arp_notify in ipv4 world. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-06 16:46:20 +00:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
ipv6: add knob to send unsolicited ND on link-layer address change This patch introduces a new knob ndisc_notify. If enabled, the kernel will transmit an unsolicited neighbour advertisement on link-layer address change to update the neighbour tables of the corresponding hosts more quickly. This is the equivalent to arp_notify in ipv4 world. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-06 16:46:20 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: flush nd cache on IFF_NOARP change This patch is the IPv6 equivalent of commit 6c8b4e3ff81b ("arp: flush arp cache on IFF_NOARP change") Without it, we keep buggy neighbours in the cache, with destination MAC address equal to our own MAC address. Tested: tcpdump -i eth0 -s 0 ip6 -n -e & ip link set dev eth0 arp off ping6 remote // sends buggy frames ip link set dev eth0 arp on ping6 remote // should work once kernel is patched Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Mario Fanelli <mariofanelli@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-29 12:01:41 +02:00
net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter In most situations the neighbor discovery cache should be cleared on a NOCARRIER event which is currently done unconditionally. But for wireless roams the neighbor discovery cache can and should remain intact since the underlying network has not changed. This patch introduces a sysctl option ndisc_evict_nocarrier which can be disabled by a wireless supplicant during a roam. This allows packets to be sent after a roam immediately without having to wait for neighbor discovery. A user reported roughly a 1 second delay after a roam before packets could be sent out (note, on IPv4). This delay was due to the ARP cache being cleared. During testing of this same scenario using IPv6 no delay was noticed, but regardless there is no reason to clear the ndisc cache for wireless roams. Signed-off-by: James Prestwood <prestwoj@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-01 10:36:29 -07:00
ipv6/addrconf: annotate data-races around devconf fields (II) Final (?) round of this series. Annotate lockless reads on following devconf fields, because they be changed concurrently from /proc/net/ipv6/conf. - accept_dad - optimistic_dad - use_optimistic - use_oif_addrs_only - ra_honor_pio_life - keep_addr_on_down - ndisc_notify - ndisc_evict_nocarrier - suppress_frag_ndisc - addr_gen_mode - seg6_enabled - ioam6_enabled - ioam6_id - ioam6_id_wide - drop_unicast_in_l2_multicast - mldv[12]_unsolicited_report_interval - force_mld_version - force_tllao - accept_untracked_na - drop_unsolicited_na - accept_source_route Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-28 13:54:38 +00:00
net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter In most situations the neighbor discovery cache should be cleared on a NOCARRIER event which is currently done unconditionally. But for wireless roams the neighbor discovery cache can and should remain intact since the underlying network has not changed. This patch introduces a sysctl option ndisc_evict_nocarrier which can be disabled by a wireless supplicant during a roam. This allows packets to be sent after a roam immediately without having to wait for neighbor discovery. A user reported roughly a 1 second delay after a roam before packets could be sent out (note, on IPv4). This delay was due to the ARP cache being cleared. During testing of this same scenario using IPv6 no delay was noticed, but regardless there is no reason to clear the ndisc cache for wireless roams. Signed-off-by: James Prestwood <prestwoj@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-01 10:36:29 -07:00
ipv6: flush nd cache on IFF_NOARP change This patch is the IPv6 equivalent of commit 6c8b4e3ff81b ("arp: flush arp cache on IFF_NOARP change") Without it, we keep buggy neighbours in the cache, with destination MAC address equal to our own MAC address. Tested: tcpdump -i eth0 -s 0 ip6 -n -e & ip link set dev eth0 arp off ping6 remote // sends buggy frames ip link set dev eth0 arp on ping6 remote // should work once kernel is patched Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Mario Fanelli <mariofanelli@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-29 12:01:41 +02:00
net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter In most situations the neighbor discovery cache should be cleared on a NOCARRIER event which is currently done unconditionally. But for wireless roams the neighbor discovery cache can and should remain intact since the underlying network has not changed. This patch introduces a sysctl option ndisc_evict_nocarrier which can be disabled by a wireless supplicant during a roam. This allows packets to be sent after a roam immediately without having to wait for neighbor discovery. A user reported roughly a 1 second delay after a roam before packets could be sent out (note, on IPv4). This delay was due to the ARP cache being cleared. During testing of this same scenario using IPv6 no delay was noticed, but regardless there is no reason to clear the ndisc cache for wireless roams. Signed-off-by: James Prestwood <prestwoj@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-01 10:36:29 -07:00
net: Evict neighbor entries on carrier down When a link's carrier goes down it could be a sign of the port changing networks. If the new network has overlapping addresses with the old one, then the kernel will continue trying to use neighbor entries established based on the old network until the entries finally age out - meaning a potentially long delay with communications not working. This patch evicts neighbor entries on carrier down with the exception of those marked permanent. Permanent entries are managed by userspace (either an admin or a routing daemon such as FRR). Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 20:33:49 -07:00
ipv6: flush nd cache on IFF_NOARP change This patch is the IPv6 equivalent of commit 6c8b4e3ff81b ("arp: flush arp cache on IFF_NOARP change") Without it, we keep buggy neighbours in the cache, with destination MAC address equal to our own MAC address. Tested: tcpdump -i eth0 -s 0 ip6 -n -e & ip link set dev eth0 arp off ping6 remote // sends buggy frames ip link set dev eth0 arp on ping6 remote // should work once kernel is patched Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Mario Fanelli <mariofanelli@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-29 12:01:41 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: prevent fib6_run_gc() contention On a high-traffic router with many processors and many IPv6 dst entries, soft lockup in fib6_run_gc() can occur when number of entries reaches gc_thresh. This happens because fib6_run_gc() uses fib6_gc_lock to allow only one thread to run the garbage collector but ip6_dst_gc() doesn't update net->ipv6.ip6_rt_last_gc until fib6_run_gc() returns. On a system with many entries, this can take some time so that in the meantime, other threads pass the tests in ip6_dst_gc() (ip6_rt_last_gc is still not updated) and wait for the lock. They then have to run the garbage collector one after another which blocks them for quite long. Resolve this by replacing special value ~0UL of expire parameter to fib6_run_gc() by explicit "force" parameter to choose between spin_lock_bh() and spin_trylock_bh() and call fib6_run_gc() with force=false if gc_thresh is reached but not max_size. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-01 10:04:14 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: Send unsolicited neighbour advertismements when notified The NETDEV_NOTIFY_PEERS notifier is a request to send such advertisements following migration to a different physical link, e.g. virtual machine migration. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-15 13:46:02 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: ipv6: lower ndisc notifier priority below addrconf ndisc_notify is used to send unsolicited neighbor advertisements (e.g., on a link up). Currently, the ndisc notifier is run before the addrconf notifer which means NA's are not sent for link-local addresses which are added by the addrconf notifier. Fix by lowering the priority of the ndisc notifier. Setting the priority to ADDRCONF_NOTIFY_PRIORITY - 5 means it runs after addrconf and before the route notifier which is ADDRCONF_NOTIFY_PRIORITY - 10. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 15:51:02 -06:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net/ipv6/ndisc: constify ctl_table arguments of utility function The sysctl core is preparing to only expose instances of struct ctl_table as "const". This will also affect the ctl_table argument of sysctl handlers. As the function prototype of all sysctl handlers throughout the tree needs to stay consistent that change will be done in one commit. To reduce the size of that final commit, switch utility functions which are not bound by "typedef proc_handler" to "const struct ctl_table". No functional change. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20240527-sysctl-const-handler-net-v1-4-16523767d0b2@weissschuh.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-27 19:04:22 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net/ipv6: replace deprecated strcpy with strscpy The deprecated helper strcpy() performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. The safe replacement is strscpy() [1]. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1] Signed-off-by: Hongbo Li <lihongbo22@huawei.com> Link: https://patch.msgid.link/20240828123224.3697672-3-lihongbo22@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-08-28 20:32:20 +08:00
net: ipv6: Standardize prefixes for message logging Add #define pr_fmt(fmt) as appropriate. Add "IPv6: " to appropriate files. Convert printk(KERN_<LEVEL> to pr_<level> (but not KERN_DEBUG). Standardize on "%s: " not "%s(): " when emitting __func__. Use "%s: ", __func__ instead of embedding function name. Coalesce formats, align arguments. ADDRCONF output is now prefixed with "IPv6: " Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15 14:11:53 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
sysctl: treewide: constify the ctl_table argument of proc_handlers const qualify the struct ctl_table argument in the proc_handler function signatures. This is a prerequisite to moving the static ctl_table structs into .rodata data which will ensure that proc_handler function pointers cannot be modified. This patch has been generated by the following coccinelle script: ``` virtual patch @r1@ identifier ctl, write, buffer, lenp, ppos; identifier func !~ "appldata_(timer|interval)_handler|sched_(rt|rr)_handler|rds_tcp_skbuf_handler|proc_sctp_do_(hmac_alg|rto_min|rto_max|udp_port|alpha_beta|auth|probe_interval)"; @@ int func( - struct ctl_table *ctl + const struct ctl_table *ctl ,int write, void *buffer, size_t *lenp, loff_t *ppos); @r2@ identifier func, ctl, write, buffer, lenp, ppos; @@ int func( - struct ctl_table *ctl + const struct ctl_table *ctl ,int write, void *buffer, size_t *lenp, loff_t *ppos) { ... } @r3@ identifier func; @@ int func( - struct ctl_table * + const struct ctl_table * ,int , void *, size_t *, loff_t *); @r4@ identifier func, ctl; @@ int func( - struct ctl_table *ctl + const struct ctl_table *ctl ,int , void *, size_t *, loff_t *); @r5@ identifier func, write, buffer, lenp, ppos; @@ int func( - struct ctl_table * + const struct ctl_table * ,int write, void *buffer, size_t *lenp, loff_t *ppos); ``` * Code formatting was adjusted in xfs_sysctl.c to comply with code conventions. The xfs_stats_clear_proc_handler, xfs_panic_mask_proc_handler and xfs_deprecated_dointvec_minmax where adjusted. * The ctl_table argument in proc_watchdog_common was const qualified. This is called from a proc_handler itself and is calling back into another proc_handler, making it necessary to change it as part of the proc_handler migration. Co-developed-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Co-developed-by: Joel Granados <j.granados@samsung.com> Signed-off-by: Joel Granados <j.granados@samsung.com>
2024-07-24 20:59:29 +02:00
sysctl: pass kernel pointers to ->proc_handler Instead of having all the sysctl handlers deal with user pointers, which is rather hairy in terms of the BPF interaction, copy the input to and from userspace in common code. This also means that the strings are always NUL-terminated by the common code, making the API a little bit safer. As most handler just pass through the data to one of the common handlers a lot of the changes are mechnical. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-04-24 08:43:38 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
sysctl: fix neighbour table sysctls. - In ipv6 ndisc_ifinfo_syctl_change so it doesn't depend on binary sysctl names for a function that works with proc. - In neighbour.c reorder the table to put the possibly unused entries at the end so we can remove them by terminating the table early. - In neighbour.c kill the entries with questionable binary sysctl handling behavior. - In neighbour.c if we don't have a strategy routine remove the binary path. So we don't the default sysctl strategy routine on data that is not ready for it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 03:05:25 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
sysctl: fix neighbour table sysctls. - In ipv6 ndisc_ifinfo_syctl_change so it doesn't depend on binary sysctl names for a function that works with proc. - In neighbour.c reorder the table to put the possibly unused entries at the end so we can remove them by terminating the table early. - In neighbour.c kill the entries with questionable binary sysctl handling behavior. - In neighbour.c if we don't have a strategy routine remove the binary path. So we don't the default sysctl strategy routine on data that is not ready for it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 03:05:25 -07:00
neigh: wrap proc dointvec functions This will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:54 +01:00
sysctl: fix neighbour table sysctls. - In ipv6 ndisc_ifinfo_syctl_change so it doesn't depend on binary sysctl names for a function that works with proc. - In neighbour.c reorder the table to put the possibly unused entries at the end so we can remove them by terminating the table early. - In neighbour.c kill the entries with questionable binary sysctl handling behavior. - In neighbour.c if we don't have a strategy routine remove the binary path. So we don't the default sysctl strategy routine on data that is not ready for it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 03:05:25 -07:00
neigh: wrap proc dointvec functions This will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:54 +01:00
sysctl: fix neighbour table sysctls. - In ipv6 ndisc_ifinfo_syctl_change so it doesn't depend on binary sysctl names for a function that works with proc. - In neighbour.c reorder the table to put the possibly unused entries at the end so we can remove them by terminating the table early. - In neighbour.c kill the entries with questionable binary sysctl handling behavior. - In neighbour.c if we don't have a strategy routine remove the binary path. So we don't the default sysctl strategy routine on data that is not ready for it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 03:05:25 -07:00
[IPV6] NDISC: Fix setting base_reachable_time_ms variable. This bug was introduced by the commit d12af679bcf8995a237560bdf7a4d734f8df5dbb (sysctl: fix neighbour table sysctls). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-29 01:32:23 -07:00
neigh: wrap proc dointvec functions This will be needed later on to provide better management of default values. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:54 +01:00
sysctl: fix neighbour table sysctls. - In ipv6 ndisc_ifinfo_syctl_change so it doesn't depend on binary sysctl names for a function that works with proc. - In neighbour.c reorder the table to put the possibly unused entries at the end so we can remove them by terminating the table early. - In neighbour.c kill the entries with questionable binary sysctl handling behavior. - In neighbour.c if we don't have a strategy routine remove the binary path. So we don't the default sysctl strategy routine on data that is not ready for it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 03:05:25 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neighbour: Annotate access to neigh_parms fields. NEIGH_VAR() is read locklessly in the fast path, and IPv6 ndisc uses NEIGH_VAR_SET() locklessly. The next patch will convert neightbl_dump_info() to RCU. Let's annotate accesses to neigh_param with READ_ONCE() and WRITE_ONCE(). Note that ndisc_ifinfo_sysctl_change() uses &NEIGH_VAR() and we cannot use '&' with READ_ONCE(), so NEIGH_VAR_PTR() is introduced. Note also that NEIGH_VAR_INIT() does not need WRITE_ONCE() as it is before parms is published. Also, the only user hippi_neigh_setup_dev() is no longer called since commit e3804cbebb67 ("net: remove COMPAT_NET_DEV_OPS"), which looks wrong, but probably no one uses HIPPI and RoadRunner. Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20251022054004.2514876-3-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-10-22 05:39:46 +00:00
ipv6: prepare inet6_fill_ifla6_attrs() for RCU We want to no longer hold RTNL while calling inet6_fill_ifla6_attrs() in the future. Add needed READ_ONCE()/WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-22 10:50:09 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: spread __net_init, __net_exit __net_init/__net_exit are apparently not going away, so use them to full extent. In some cases __net_init was removed, because it was called from __net_exit code. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-17 03:35:32 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: Simplify IPv6 control sockets creation. Do this by replacing sock_create_kern with inet_ctl_sock_create. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:31:03 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
net: replace ND_PRINTK with dynamic debug ND_PRINTK with val > 1 only works when the ND_DEBUG was set in compilation phase. Replace it with dynamic debug. Convert ND_PRINTK with val <= 1 to net_{err,warn}_ratelimited, and convert the rest to net_dbg_ratelimited. Suggested-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250708033342.1627636-1-wangliang74@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08 11:33:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[IPV6]: Simplify IPv6 control sockets creation. Do this by replacing sock_create_kern with inet_ctl_sock_create. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:31:03 -07:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ipv6: lockless IPV6_MULTICAST_LOOP implementation Add inet6_{test|set|clear|assign}_bit() helpers. Note that I am using bits from inet->inet_flags, this might change in the future if we need more flags. While solving data-races accessing np->mc_loop, this patch also allows to implement lockless accesses to np->mcast_hops in the following patch. Also constify sk_mc_loop() argument. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-12 16:02:00 +00:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
net: spread __net_init, __net_exit __net_init/__net_exit are apparently not going away, so use them to full extent. In some cases __net_init was removed, because it was called from __net_exit code. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-17 03:35:32 +00:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
[IPV6]: Simplify IPv6 control sockets creation. Do this by replacing sock_create_kern with inet_ctl_sock_create. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:31:03 -07:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
[NET] IPV6: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-09 23:24:49 +09:00
neigh: remove dynamic neigh table registration support Currently there are only three neigh tables in the whole kernel: arp table, ndisc table and decnet neigh table. What's more, we don't support registering multiple tables per family. Therefore we can just make these tables statically built-in. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10 15:59:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: use tbl->family to distinguish ipv4 from ipv6 Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-07 19:26:55 +01:00
neigh: remove exceptional & on function name In this file, function names are otherwise used as pointers without &. A simplified version of the Coccinelle semantic patch that makes this change is as follows: // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-25 01:49:37 +05:30
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
net: ipv6: ndisc: Fix warning when CONFIG_SYSCTL=n When CONFIG_SYSCTL=n the following build warning happens: net/ipv6/ndisc.c:1730:1: warning: label 'out' defined but not used [-Wunused-label] The 'out' label is only used when CONFIG_SYSCTL=y, so move it inside the 'ifdef CONFIG_SYSCTL' block. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-16 00:52:08 -02:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
ipv6: don't call fib6_run_gc() until routing is ready When loading the ipv6 module, ndisc_init() is called before ip6_route_init(). As the former registers a handler calling fib6_run_gc(), this opens a window to run the garbage collector before necessary data structures are initialized. If a network device is initialized in this window, adding MAC address to it triggers a NETDEV_CHANGEADDR event, leading to a crash in fib6_clean_all(). Take the event handler registration out of ndisc_init() into a separate function ndisc_late_init() and move it after ip6_route_init(). Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-09 21:45:04 +02:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
neigh: remove dynamic neigh table registration support Currently there are only three neigh tables in the whole kernel: arp table, ndisc table and decnet neigh table. What's more, we don't support registering multiple tables per family. Therefore we can just make these tables statically built-in. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10 15:59:36 -08:00
[NETNS][IPV6] ndisc - make socket control per namespace Make ndisc socket control per namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 11:15:34 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00