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linux/include/net/inetpeer.h

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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: Add metrics storage to inetpeer entries. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-26 20:55:53 -08:00
inetpeer: Add inet_getpeer_v6() Now that all of the infrastructure is in place, we can add the ipv6 shorthand for peer creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 12:20:00 -08:00
atomic: use <linux/atomic.h> This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:09:06 -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
inetpeer: Abstract address representation further. Future changes will add caching information, and some of these new elements will be addresses. Since the family is implicit via the ->daddr.family member, replicating the family in ever address we store is entirely redundant. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-09 14:30:26 -08:00
inetpeer: Introduce inet_peer_address_t. Currently only the v4 aspect is used, but this will change. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:53:55 -08:00
inetpeer: Abstract address representation further. Future changes will add caching information, and some of these new elements will be addresses. Since the family is implicit via the ->daddr.family member, replicating the family in ever address we store is entirely redundant. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-09 14:30:26 -08:00
inetpeer: Introduce inet_peer_address_t. Currently only the v4 aspect is used, but this will change. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:53:55 -08:00
inetpeer: Abstract address representation further. Future changes will add caching information, and some of these new elements will be addresses. Since the family is implicit via the ->daddr.family member, replicating the family in ever address we store is entirely redundant. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-09 14:30:26 -08:00
inetpeer: Kill use of inet_peer_address_t typedef. They are verboten these days. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-01 17:28:18 -08:00
inetpeer: Introduce inet_peer_address_t. Currently only the v4 aspect is used, but this will change. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:53:55 -08:00
net: cleanup include/net This cleanup patch puts struct/union/enum opening braces, in first line to ease grep games. struct something { becomes : struct something { Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03 03:26:03 +00:00
[IPV4] inet_peer: Group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS Lot of routers/embedded devices still use CPUS with 16/32 bytes cache lines. (486, Pentium, ... PIII) It makes sense to group together fields used at lookup time so they fit in one cache line. This reduce cache footprint and speedup lookups. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-20 00:28:35 -07:00
inetpeer: __rcu annotations Adds __rcu annotations to inetpeer (struct inet_peer)->avl_left (struct inet_peer)->avl_right This is a tedious cleanup, but removes one smp_wmb() from link_to_pool() since we now use more self documenting rcu_assign_pointer(). Note the use of RCU_INIT_POINTER() instead of rcu_assign_pointer() in all cases we dont need a memory barrier. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-25 23:55:38 +00:00
inetpeer: Kill use of inet_peer_address_t typedef. They are verboten these days. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-01 17:28:18 -08:00
inetpeer: Optimize inet_getid() While investigating for network latencies, I found inet_getid() was a contention point for some workloads, as inet_peer_idlock is shared by all inet_getid() users regardless of peers. One way to fix this is to make ip_id_count an atomic_t instead of __u16, and use atomic_add_return(). In order to keep sizeof(struct inet_peer) = 64 on 64bit arches tcp_ts_stamp is also converted to __u32 instead of "unsigned long". Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-12 09:33:09 +00:00
inetpeer: lower false sharing effect Profiles show false sharing in addr_compare() because refcnt/dtime changes dirty the first inet_peer cache line, where are lying the keys used at lookup time. If many cpus are calling inet_getpeer() and inet_putpeer(), or need frag ids, addr_compare() is in 2nd position in "perf top". Before patch, my udpflood bench (16 threads) on my 2x4x2 machine : 5784.00 9.7% csum_partial_copy_generic [kernel] 3356.00 5.6% addr_compare [kernel] 2638.00 4.4% fib_table_lookup [kernel] 2625.00 4.4% ip_fragment [kernel] 1934.00 3.2% neigh_lookup [kernel] 1617.00 2.7% udp_sendmsg [kernel] 1608.00 2.7% __ip_route_output_key [kernel] 1480.00 2.5% __ip_append_data [kernel] 1396.00 2.3% kfree [kernel] 1195.00 2.0% kmem_cache_free [kernel] 1157.00 1.9% inet_getpeer [kernel] 1121.00 1.9% neigh_resolve_output [kernel] 1012.00 1.7% dev_queue_xmit [kernel] # time ./udpflood.sh real 0m44.511s user 0m20.020s sys 11m22.780s # time ./udpflood.sh real 0m44.099s user 0m20.140s sys 11m15.870s After patch, no more addr_compare() in profiles : 4171.00 10.7% csum_partial_copy_generic [kernel] 1787.00 4.6% fib_table_lookup [kernel] 1756.00 4.5% ip_fragment [kernel] 1234.00 3.2% udp_sendmsg [kernel] 1191.00 3.0% neigh_lookup [kernel] 1118.00 2.9% __ip_append_data [kernel] 1022.00 2.6% kfree [kernel] 993.00 2.5% __ip_route_output_key [kernel] 841.00 2.2% neigh_resolve_output [kernel] 816.00 2.1% kmem_cache_free [kernel] 658.00 1.7% ia32_sysenter_target [kernel] 632.00 1.6% kmem_cache_alloc_node [kernel] # time ./udpflood.sh real 0m41.587s user 0m19.190s sys 10m36.370s # time ./udpflood.sh real 0m41.486s user 0m19.290s sys 10m33.650s Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-08 23:31:27 -07:00
inetpeer: fix a race in inetpeer_gc_worker() commit 5faa5df1fa2024 (inetpeer: Invalidate the inetpeer tree along with the routing cache) added a race : Before freeing an inetpeer, we must respect a RCU grace period, and make sure no user will attempt to increase refcnt. inetpeer_invalidate_tree() waits for a RCU grace period before inserting inetpeer tree into gc_list and waking the worker. At that time, no concurrent lookup can find a inetpeer in this tree. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-05 03:00:18 +00:00
inetpeer: restore small inet_peer structures Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16 04:52:13 +00:00
tcp: Move timestamps from inetpeer to metrics cache. With help from Lin Ming. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 03:14:24 -07:00
inetpeer: Add metrics storage to inetpeer entries. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-26 20:55:53 -08:00
inetpeer: restore small inet_peer structures Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16 04:52:13 +00:00
inetpeer: Add redirect and PMTU discovery cached info. Validity of the cached PMTU information is indicated by it's expiration value being non-zero, just as per dst->expires. The scheme we will use is that we will remember the pre-ICMP value held in the metrics or route entry, and then at expiration time we will restore that value. In this way PMTU expiration does not kill off the cached route as is done currently. Redirect information is permanent, or at least until another redirect is received. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-09 15:36:47 -08:00
inetpeer: restore small inet_peer structures Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16 04:52:13 +00:00
inetpeer: remove unused list Andi Kleen and Tim Chen reported huge contention on inetpeer unused_peers.lock, on memcached workload on a 40 core machine, with disabled route cache. It appears we constantly flip peers refcnt between 0 and 1 values, and we must insert/remove peers from unused_peers.list, holding a contended spinlock. Remove this list completely and perform a garbage collection on-the-fly, at lookup time, using the expired nodes we met during the tree traversal. This removes a lot of code, makes locking more standard, and obsoletes two sysctls (inet_peer_gc_mintime and inet_peer_gc_maxtime). This also removes two pointers in inet_peer structure. There is still a false sharing effect because refcnt is in first cache line of object [were the links and keys used by lookups are located], we might move it at the end of inet_peer structure to let this first cache line mostly read by cpus. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Andi Kleen <andi@firstfloor.org> CC: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-08 13:35:34 +00:00
inetpeer: restore small inet_peer structures Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16 04:52:13 +00:00
inetpeer: lower false sharing effect Profiles show false sharing in addr_compare() because refcnt/dtime changes dirty the first inet_peer cache line, where are lying the keys used at lookup time. If many cpus are calling inet_getpeer() and inet_putpeer(), or need frag ids, addr_compare() is in 2nd position in "perf top". Before patch, my udpflood bench (16 threads) on my 2x4x2 machine : 5784.00 9.7% csum_partial_copy_generic [kernel] 3356.00 5.6% addr_compare [kernel] 2638.00 4.4% fib_table_lookup [kernel] 2625.00 4.4% ip_fragment [kernel] 1934.00 3.2% neigh_lookup [kernel] 1617.00 2.7% udp_sendmsg [kernel] 1608.00 2.7% __ip_route_output_key [kernel] 1480.00 2.5% __ip_append_data [kernel] 1396.00 2.3% kfree [kernel] 1195.00 2.0% kmem_cache_free [kernel] 1157.00 1.9% inet_getpeer [kernel] 1121.00 1.9% neigh_resolve_output [kernel] 1012.00 1.7% dev_queue_xmit [kernel] # time ./udpflood.sh real 0m44.511s user 0m20.020s sys 11m22.780s # time ./udpflood.sh real 0m44.099s user 0m20.140s sys 11m15.870s After patch, no more addr_compare() in profiles : 4171.00 10.7% csum_partial_copy_generic [kernel] 1787.00 4.6% fib_table_lookup [kernel] 1756.00 4.5% ip_fragment [kernel] 1234.00 3.2% udp_sendmsg [kernel] 1191.00 3.0% neigh_lookup [kernel] 1118.00 2.9% __ip_append_data [kernel] 1022.00 2.6% kfree [kernel] 993.00 2.5% __ip_route_output_key [kernel] 841.00 2.2% neigh_resolve_output [kernel] 816.00 2.1% kmem_cache_free [kernel] 658.00 1.7% ia32_sysenter_target [kernel] 632.00 1.6% kmem_cache_alloc_node [kernel] # time ./udpflood.sh real 0m41.587s user 0m19.190s sys 10m36.370s # time ./udpflood.sh real 0m41.486s user 0m19.290s sys 10m33.650s Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-08 23:31:27 -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: Initialize per-netns inetpeer roots in net/ipv{4,6}/route.c Instead of net/ipv4/inetpeer.c Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 16:27:05 -07:00
inet: Add family scope inetpeer flushes. This implementation can deal with having many inetpeer roots, which is a necessary prerequisite for per-FIB table rooted peer tables. Each family (AF_INET, AF_INET6) has a sequence number which we bump when we get a family invalidation request. Each peer lookup cheaply checks whether the flush sequence of the root we are using is out of date, and if so flushes it and updates the sequence number. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-10 00:24:21 -07:00
inet: Initialize per-netns inetpeer roots in net/ipv{4,6}/route.c Instead of net/ipv4/inetpeer.c Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 16:27:05 -07:00
inet: Hide route peer accesses behind helpers. We encode the pointer(s) into an unsigned long with one state bit. The state bit is used so we can store the inetpeer tree root to use when resolving the peer later. Later the peer roots will be per-FIB table, and this change works to facilitate that. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 22:36:36 -07:00
inet: Avoid potential NULL peer dereference. We handle NULL in rt{,6}_set_peer but then our caller will try to pass that NULL pointer into inet_putpeer() which isn't ready for it. Fix this by moving the NULL check one level up, and then remove the now unnecessary NULL check from inetpeer_ptr_set_peer(). Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-11 04:13:57 -07:00
inet: Hide route peer accesses behind helpers. We encode the pointer(s) into an unsigned long with one state bit. The state bit is used so we can store the inetpeer tree root to use when resolving the peer later. Later the peer roots will be per-FIB table, and this change works to facilitate that. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 22:36:36 -07:00
inet*.h: Remove extern from function prototypes There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-21 10:22:41 -07:00
inet: Initialize per-netns inetpeer roots in net/ipv{4,6}/route.c Instead of net/ipv4/inetpeer.c Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 16:27:05 -07:00
inet*.h: Remove extern from function prototypes There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-21 10:22:41 -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
inetpeer: Mark metrics as "new" in fresh inetpeer entries. Set the RTAX_LOCKED metric to INETPEER_METRICS_NEW (basically, all ones) on fresh inetpeer entries. This way code can determine if default metrics have been loaded in from a routing table entry already. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-27 13:52:16 -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
inet: Pass inetpeer root into inet_getpeer*() interfaces. Otherwise we reference potentially non-existing members when ipv6 is disabled. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 19:12:36 -07:00
inetpeer: add namespace support for inetpeer now inetpeer doesn't support namespace,the information will be leaking across namespace. this patch move the global vars v4_peers and v6_peers to netns_ipv4 and netns_ipv6 as a field peers. add struct pernet_operations inetpeer_ops to initial pernet inetpeer data. and change family_to_base and inet_getpeer to support namespace. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-08 01:20:41 +00:00
inetpeer: Make inet_getpeer() take an inet_peer_adress_t pointer. And make an inet_getpeer_v4() helper, update callers. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:54:19 -08:00
inet: Pass inetpeer root into inet_getpeer*() interfaces. Otherwise we reference potentially non-existing members when ipv6 is disabled. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 19:12:36 -07:00
inetpeer: add parameter net for inet_getpeer_v4,v6 add struct net as a parameter of inet_getpeer_v[4,6], use net to replace &init_net. and modify some places to provide net for inet_getpeer_v[4,6] Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-08 01:21:40 +00:00
inetpeer: Make inet_getpeer() take an inet_peer_adress_t pointer. And make an inet_getpeer_v4() helper, update callers. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:54:19 -08:00
inetpeer: Kill use of inet_peer_address_t typedef. They are verboten these days. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-01 17:28:18 -08:00
inetpeer: Make inet_getpeer() take an inet_peer_adress_t pointer. And make an inet_getpeer_v4() helper, update callers. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:54:19 -08:00
inetpeer: Abstract address representation further. Future changes will add caching information, and some of these new elements will be addresses. Since the family is implicit via the ->daddr.family member, replicating the family in ever address we store is entirely redundant. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-09 14:30:26 -08:00
inetpeer: Make inet_getpeer() take an inet_peer_adress_t pointer. And make an inet_getpeer_v4() helper, update callers. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:54:19 -08:00
inet: Pass inetpeer root into inet_getpeer*() interfaces. Otherwise we reference potentially non-existing members when ipv6 is disabled. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 19:12:36 -07:00
inetpeer: Make inet_getpeer() take an inet_peer_adress_t pointer. And make an inet_getpeer_v4() helper, update callers. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 11:54:19 -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
inet: Pass inetpeer root into inet_getpeer*() interfaces. Otherwise we reference potentially non-existing members when ipv6 is disabled. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 19:12:36 -07:00
inetpeer: add parameter net for inet_getpeer_v4,v6 add struct net as a parameter of inet_getpeer_v[4,6], use net to replace &init_net. and modify some places to provide net for inet_getpeer_v[4,6] Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-08 01:21:40 +00:00
inetpeer: Add inet_getpeer_v6() Now that all of the infrastructure is in place, we can add the ipv6 shorthand for peer creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 12:20:00 -08:00
inetpeer: Kill use of inet_peer_address_t typedef. They are verboten these days. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-01 17:28:18 -08:00
inetpeer: Add inet_getpeer_v6() Now that all of the infrastructure is in place, we can add the ipv6 shorthand for peer creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 12:20:00 -08:00
net: remove ipv6_addr_copy() C assignment can handle struct in6_addr copying. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-21 03:39:03 +00:00
inetpeer: Add inet_getpeer_v6() Now that all of the infrastructure is in place, we can add the ipv6 shorthand for peer creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 12:20:00 -08:00
inet: Pass inetpeer root into inet_getpeer*() interfaces. Otherwise we reference potentially non-existing members when ipv6 is disabled. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 19:12:36 -07:00
inetpeer: Add inet_getpeer_v6() Now that all of the infrastructure is in place, we can add the ipv6 shorthand for peer creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 12:20:00 -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
inet*.h: Remove extern from function prototypes There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-21 10:22:41 -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
inet*.h: Remove extern from function prototypes There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-21 10:22:41 -07:00
inetpeer: Invalidate the inetpeer tree along with the routing cache We initialize the routing metrics with the values cached on the inetpeer in rt_init_metrics(). So if we have the metrics cached on the inetpeer, we ignore the user configured fib_metrics. To fix this issue, we replace the old tree with a fresh initialized inet_peer_base. The old tree is removed later with a delayed work queue. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-06 21:20:26 +00:00
inetpeer: restore small inet_peer structures Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16 04:52:13 +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 fragment identifications less predictable IPv6 fragment identification generation is way beyond what we use for IPv4 : It uses a single generator. Its not scalable and allows DOS attacks. Now inetpeer is IPv6 aware, we can use it to provide a more secure and scalable frag ident generator (per destination, instead of system wide) This patch : 1) defines a new secure_ipv6_id() helper 2) extends inet_getid() to provide 32bit results 3) extends ipv6_select_ident() with a new dest parameter Reported-by: Fernando Gont <fernando@gont.com.ar> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21 21:25:58 -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
inetpeer: Optimize inet_getid() While investigating for network latencies, I found inet_getid() was a contention point for some workloads, as inet_peer_idlock is shared by all inet_getid() users regardless of peers. One way to fix this is to make ip_id_count an atomic_t instead of __u16, and use atomic_add_return(). In order to keep sizeof(struct inet_peer) = 64 on 64bit arches tcp_ts_stamp is also converted to __u32 instead of "unsigned long". Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-12 09:33:09 +00:00
inetpeer: restore small inet_peer structures Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16 04:52:13 +00:00
net: fix inet_getid() and ipv6_select_ident() bugs I noticed we were sending wrong IPv4 ID in TCP flows when MTU discovery is disabled. Note how GSO/TSO packets do not have monotonically incrementing ID. 06:37:41.575531 IP (id 14227, proto: TCP (6), length: 4396) 06:37:41.575534 IP (id 14272, proto: TCP (6), length: 65212) 06:37:41.575544 IP (id 14312, proto: TCP (6), length: 57972) 06:37:41.575678 IP (id 14317, proto: TCP (6), length: 7292) 06:37:41.575683 IP (id 14361, proto: TCP (6), length: 63764) It appears I introduced this bug in linux-3.1. inet_getid() must return the old value of peer->ip_id_count, not the new one. Lets revert this part, and remove the prevention of a null identification field in IPv6 Fragment Extension Header, which is dubious and not even done properly. Fixes: 87c48fa3b463 ("ipv6: make fragment identifications less predictable") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-29 08:45:14 -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