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linux/net/openvswitch/Kconfig

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treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-19 13:07:45 +01:00
net: Add Open vSwitch kernel components. Open vSwitch is a multilayer Ethernet switch targeted at virtualized environments. In addition to supporting a variety of features expected in a traditional hardware switch, it enables fine-grained programmatic extension and flow-based control of the network. This control is useful in a wide variety of applications but is particularly important in multi-server virtualization deployments, which are often characterized by highly dynamic endpoints and the need to maintain logical abstractions for multiple tenants. The Open vSwitch datapath provides an in-kernel fast path for packet forwarding. It is complemented by a userspace daemon, ovs-vswitchd, which is able to accept configuration from a variety of sources and translate it into packet processing rules. See http://openvswitch.org for more information and userspace utilities. Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-10-25 19:26:31 -07:00
openvswitch: Fix build failure. Add dependency on INET to fix following build error. I have also fixed MPLS dependency. ERROR: "ip_route_output_flow" [net/openvswitch/openvswitch.ko] undefined! make[1]: *** [__modpost] Error 1 Reported-by: Jim Davis <jim.epost@gmail.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-13 22:21:30 -08:00
openvswitch: Fix dependency on IPv6 defrag. When NF_CONNTRACK is built-in, NF_DEFRAG_IPV6 is a module, and OPENVSWITCH is built-in, the following build error would occur: net/built-in.o: In function `ovs_ct_execute': (.text+0x10f587): undefined reference to `nf_ct_frag6_gather' Fixes: 7f8a436eaa2c ("openvswitch: Add conntrack action") Reported-by: Jim Davis <jim.epost@gmail.com> Signed-off-by: Joe Stringer <joestringer@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-11 15:01:16 -07:00
openvswitch: Interface with NAT. Extend OVS conntrack interface to cover NAT. New nested OVS_CT_ATTR_NAT attribute may be used to include NAT with a CT action. A bare OVS_CT_ATTR_NAT only mangles existing and expected connections. If OVS_NAT_ATTR_SRC or OVS_NAT_ATTR_DST is included within the nested attributes, new (non-committed/non-confirmed) connections are mangled according to the rest of the nested attributes. The corresponding OVS userspace patch series includes test cases (in tests/system-traffic.at) that also serve as example uses. This work extends on a branch by Thomas Graf at https://github.com/tgraf/ovs/tree/nat. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-03-10 10:54:23 -08:00
openvswitch: call only into reachable nf-nat code The openvswitch code has gained support for calling into the nf-nat-ipv4/ipv6 modules, however those can be loadable modules in a configuration in which openvswitch is built-in, leading to link errors: net/built-in.o: In function `__ovs_ct_lookup': :(.text+0x2cc2c8): undefined reference to `nf_nat_icmp_reply_translation' :(.text+0x2cc66c): undefined reference to `nf_nat_icmpv6_reply_translation' The dependency on (!NF_NAT || NF_NAT) prevents similar issues, but NF_NAT is set to 'y' if any of the symbols selecting it are built-in, but the link error happens when any of them are modular. A second issue is that even if CONFIG_NF_NAT_IPV6 is built-in, CONFIG_NF_NAT_IPV4 might be completely disabled. This is unlikely to be useful in practice, but the driver currently only handles IPv6 being optional. This patch improves the Kconfig dependency so that openvswitch cannot be built-in if either of the two other symbols are set to 'm', and it replaces the incorrect #ifdef in ovs_ct_nat_execute() with two "if (IS_ENABLED())" checks that should catch all corner cases also make the code more readable. The same #ifdef exists ovs_ct_nat_to_attr(), where it does not cause a link error, but for consistency I'm changing it the same way. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 05752523e565 ("openvswitch: Interface with NAT.") Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-03-18 14:33:45 +01:00
openvswitch: Support conntrack zone limit Currently, nf_conntrack_max is used to limit the maximum number of conntrack entries in the conntrack table for every network namespace. For the VMs and containers that reside in the same namespace, they share the same conntrack table, and the total # of conntrack entries for all the VMs and containers are limited by nf_conntrack_max. In this case, if one of the VM/container abuses the usage the conntrack entries, it blocks the others from committing valid conntrack entries into the conntrack table. Even if we can possibly put the VM in different network namespace, the current nf_conntrack_max configuration is kind of rigid that we cannot limit different VM/container to have different # conntrack entries. To address the aforementioned issue, this patch proposes to have a fine-grained mechanism that could further limit the # of conntrack entries per-zone. For example, we can designate different zone to different VM, and set conntrack limit to each zone. By providing this isolation, a mis-behaved VM only consumes the conntrack entries in its own zone, and it will not influence other well-behaved VMs. Moreover, the users can set various conntrack limit to different zone based on their preference. The proposed implementation utilizes Netfilter's nf_conncount backend to count the number of connections in a particular zone. If the number of connection is above a configured limitation, ovs will return ENOMEM to the userspace. If userspace does not configure the zone limit, the limit defaults to zero that is no limitation, which is backward compatible to the behavior without this patch. The following high leve APIs are provided to the userspace: - OVS_CT_LIMIT_CMD_SET: * set default connection limit for all zones * set the connection limit for a particular zone - OVS_CT_LIMIT_CMD_DEL: * remove the connection limit for a particular zone - OVS_CT_LIMIT_CMD_GET: * get the default connection limit for all zones * get the connection limit for a particular zone Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-24 17:56:43 -07:00
net: openvswitch: add psample action Add support for a new action: psample. This action accepts a u32 group id and a variable-length cookie and uses the psample multicast group to make the packet available for observability. The maximum length of the user-defined cookie is set to 16, same as tc_cookie, to discourage using cookies that will not be offloadable. Reviewed-by: Michal Kubiak <michal.kubiak@intel.com> Reviewed-by: Aaron Conole <aconole@redhat.com> Reviewed-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: Adrian Moreno <amorenoz@redhat.com> Link: https://patch.msgid.link/20240704085710.353845-6-amorenoz@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-07-04 10:56:56 +02:00
mpls: Fix the openvswitch select of NET_MPLS_GSO Fix the OPENVSWITCH Kconfig option and old Kconfigs by having OPENVSWITCH select both NET_MPLS_GSO and MPLSO. A Kbuild test robot reported that when NET_MPLS_GSO is selected by OPENVSWITCH the generated .config is broken because MPLS is not selected. Cc: Simon Horman <horms@verge.net.au> Fixes: cec9166ca4e mpls: Refactor how the mpls module is built Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Reviewed-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-07 16:24:23 -06:00
sctp: use skb_crc32c() instead of __skb_checksum() Make sctp_compute_cksum() just use the new function skb_crc32c(), instead of calling __skb_checksum() with a skb_checksum_ops struct that does CRC32C. This is faster and simpler. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://patch.msgid.link/20250519175012.36581-6-ebiggers@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-19 10:50:07 -07:00
openvswitch: Fix build failure. Add dependency on INET to fix following build error. I have also fixed MPLS dependency. ERROR: "ip_route_output_flow" [net/openvswitch/openvswitch.ko] undefined! make[1]: *** [__modpost] Error 1 Reported-by: Jim Davis <jim.epost@gmail.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-13 22:21:30 -08:00
net: add dst_cache to ovs vxlan lwtunnel In case of UDP traffic with datagram length below MTU this give about 2% performance increase when tunneling over ipv4 and about 60% when tunneling over ipv6 Signed-off-by: Paolo Abeni <pabeni@redhat.com> Suggested-and-acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-12 15:43:57 +01:00
openvswitch: enable NSH support v16->17 - Fixed disputed check code: keep them in nsh_push and nsh_pop but also add them in __ovs_nla_copy_actions v15->v16 - Add csum recalculation for nsh_push, nsh_pop and set_nsh pointed out by Pravin - Move nsh key into the union with ipv4 and ipv6 and add check for nsh key in match_validate pointed out by Pravin - Add nsh check in validate_set and __ovs_nla_copy_actions v14->v15 - Check size in nsh_hdr_from_nlattr - Fixed four small issues pointed out By Jiri and Eric v13->v14 - Rename skb_push_nsh to nsh_push per Dave's comment - Rename skb_pop_nsh to nsh_pop per Dave's comment v12->v13 - Fix NSH header length check in set_nsh v11->v12 - Fix missing changes old comments pointed out - Fix new comments for v11 v10->v11 - Fix the left three disputable comments for v9 but not fixed in v10. v9->v10 - Change struct ovs_key_nsh to struct ovs_nsh_key_base base; __be32 context[NSH_MD1_CONTEXT_SIZE]; - Fix new comments for v9 v8->v9 - Fix build error reported by daily intel build because nsh module isn't selected by openvswitch v7->v8 - Rework nested value and mask for OVS_KEY_ATTR_NSH - Change pop_nsh to adapt to nsh kernel module - Fix many issues per comments from Jiri Benc v6->v7 - Remove NSH GSO patches in v6 because Jiri Benc reworked it as another patch series and they have been merged. - Change it to adapt to nsh kernel module added by NSH GSO patch series v5->v6 - Fix the rest comments for v4. - Add NSH GSO support for VxLAN-gpe + NSH and Eth + NSH. v4->v5 - Fix many comments by Jiri Benc and Eric Garver for v4. v3->v4 - Add new NSH match field ttl - Update NSH header to the latest format which will be final format and won't change per its author's confirmation. - Fix comments for v3. v2->v3 - Change OVS_KEY_ATTR_NSH to nested key to handle length-fixed attributes and length-variable attriubte more flexibly. - Remove struct ovs_action_push_nsh completely - Add code to handle nested attribute for SET_MASKED - Change PUSH_NSH to use the nested OVS_KEY_ATTR_NSH to transfer NSH header data. - Fix comments and coding style issues by Jiri and Eric v1->v2 - Change encap_nsh and decap_nsh to push_nsh and pop_nsh - Dynamically allocate struct ovs_action_push_nsh for length-variable metadata. OVS master and 2.8 branch has merged NSH userspace patch series, this patch is to enable NSH support in kernel data path in order that OVS can support NSH in compat mode by porting this. Signed-off-by: Yi Yang <yi.y.yang@intel.com> Acked-by: Jiri Benc <jbenc@redhat.com> Acked-by: Eric Garver <e@erig.me> Acked-by: Pravin Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-07 21:07:02 +08:00
net: create nf_conntrack_ovs for ovs and tc use Similar to nf_nat_ovs created by Commit ebddb1404900 ("net: move the nat function to nf_nat_ovs for ovs and tc"), this patch is to create nf_conntrack_ovs to get these functions shared by OVS and TC only. There are nf_ct_helper() and nf_ct_add_helper() from nf_conntrak_helper in this patch, and will be more in the following patches. Signed-off-by: Xin Long <lucien.xin@gmail.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Aaron Conole <aconole@redhat.com> Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-07 17:52:06 -05:00
net: move the nat function to nf_nat_ovs for ovs and tc There are two nat functions are nearly the same in both OVS and TC code, (ovs_)ct_nat_execute() and ovs_ct_nat/tcf_ct_act_nat(). This patch creates nf_nat_ovs.c under netfilter and moves them there then exports nf_ct_nat() so that it can be shared by both OVS and TC, and keeps the nat (type) check and nat flag update in OVS and TC's own place, as these parts are different between OVS and TC. Note that in OVS nat function it was using skb->protocol to get the proto as it already skips vlans in key_extract(), while it doesn't in TC, and TC has to call skb_protocol() to get proto. So in nf_ct_nat_execute(), we keep using skb_protocol() which works for both OVS and TC contrack. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Aaron Conole <aconole@redhat.com> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-08 11:56:12 -05:00
treewide: replace '---help---' in Kconfig files with 'help' Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-14 01:50:22 +09:00
net: Add Open vSwitch kernel components. Open vSwitch is a multilayer Ethernet switch targeted at virtualized environments. In addition to supporting a variety of features expected in a traditional hardware switch, it enables fine-grained programmatic extension and flow-based control of the network. This control is useful in a wide variety of applications but is particularly important in multi-server virtualization deployments, which are often characterized by highly dynamic endpoints and the need to maintain logical abstractions for multiple tenants. The Open vSwitch datapath provides an in-kernel fast path for packet forwarding. It is complemented by a userspace daemon, ovs-vswitchd, which is able to accept configuration from a variety of sources and translate it into packet processing rules. See http://openvswitch.org for more information and userspace utilities. Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-10-25 19:26:31 -07:00