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* userspace: Add SRv6 tunnel support.Nobuhiro MIKI2023-03-291-0/+1
| | | | | | | | | | | | | | | | | SRv6 (Segment Routing IPv6) tunnel vport is responsible for encapsulation and decapsulation the inner packets with IPv6 header and an extended header called SRH (Segment Routing Header). See spec in: https://datatracker.ietf.org/doc/html/rfc8754 This patch implements SRv6 tunneling in userspace datapath. It uses `remote_ip` and `local_ip` options as with existing tunnel protocols. It also adds a dedicated `srv6_segs` option to define a sequence of routers called segment list. Signed-off-by: Nobuhiro MIKI <nmiki@yahoo-corp.jp> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
* dpctl: Add support to count upcall packets.wangchuanlei2023-01-311-0/+14
| | | | | | | | | Add support to count upcall packets per port, both succeed and failed, which is a better way to see how many packets upcalled on each interface. Acked-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: wangchuanlei <wangchuanlei@inspur.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
* netdev-linux: Allow meter to work in tc software datapath when tc-policy is ↵Baowen Zheng2022-11-011-4/+7
| | | | | | | | | | | | | | | | | | | | | specified Add tc action flags when adding police action to offload meter table. There is a restriction that the flag of skip_sw/skip_hw should be same for filter rule and the independent created tc actions the rule uses. In this case, if we configure the tc-policy as skip_hw, filter rule will be created with skip_hw flag and the police action according to meter table will have no action flag, then flower rule will fail to add to tc kernel system. To fix this issue, we will add tc action flag when adding police action to offload a meter table, so it will allow meter table to work in tc software datapath. Fixes: 5c039ddc64ff ("netdev-linux: Add functions to manipulate tc police action") Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com> Acked-by: Ilya Maximets <i.maximets@ovn.org> Signed-off-by: Simon Horman <simon.horman@corigine.com>
* make: Remove the Linux datapath.Greg Rose2022-07-152-0/+1177
| | | | | | | | | | | | | | | | Update the necessary make and configure files to remove the Linux datapath and then remove the datapath. Move datapath/linux/compat/include/linux/openvswitch.h to include/linux/openvswitch.h because it is needed to generate header files used by the userspace switch. Also remove references to the Linux datapath from auxiliary files and utilities since it is no longer supported. Signed-off-by: Greg Rose <gvrose8192@gmail.com> Reviewed-by: David Marchand <david.marchand@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
* compat: Add gen_stats include to define tc hw stats.Paul Blakey2022-03-042-0/+82
| | | | | | | | | | Update kernel UAPI to support dumping hardware stats of tc filters. Signed-off-by: Paul Blakey <paulb@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
* add port-based ingress policing based packet-per-second rate-limitingYong Xu2021-07-011-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | OVS has support for using policing to enforce a rate limit in kilobits per second. This is configured using OVSDB. f.e. $ ovs-vsctl set interface tap0 ingress_policing_rate=1000 $ ovs-vsctl set interface tap0 ingress_policing_burst=100 This patch adds a related feature, allowing policing to enforce a rate limit in kilo-packets per second. This is also configured using OVSDB. $ ovs-vsctl set interface tap0 ingress_policing_kpkts_rate=1000 $ ovs-vsctl set interface tap0 ingress_policing_kpkts_burst=100 The kilo-bit and kilo-packet rate limits may be used separately or in combination. Add separate action for BPS and PPS in netlink message. Revise code and change action result to pipe to allow traffic pipe into second action. This patch implements the feature for: * OVSDB (northbound API) * TC policer when used both with and without TC offload (kernel API) Signed-off-by: Yong Xu <yong.xu@corigine.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: Add ct_state flags definitionsPaul Blakey2021-03-151-1/+4
| | | | | | | | | Add TCA_FLOWER_KEY_CT_FLAGS_REPLY, and TCA_FLOWER_KEY_CT_FLAGS_INVALID. Signed-off-by: Paul Blakey <paulb@nvidia.com> Acked-by: Roi Dayan <roid@nvidia.com> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: Add tc ct action and flower matches defines for older kernelsPaul Blakey2019-12-223-4/+86
| | | | | | | | | Update kernel UAPI to support conntrack matches, and the tc actions ct and goto chain. Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* tc: Set 'no_percpu' flag for compatible actionsVlad Buslov2019-11-113-1/+37
| | | | | | | | | | | | | | | | | | | | Recent changes in Linux kernel TC action subsystem introduced new TCA_ACT_FLAGS_NO_PERCPU_STATS flag. The purpose of the flag is to request action implementation to skip allocating action stats with expensive percpu allocator and use regular built-in action stats instead. Such approach significantly improves rule insertion rate and reduce memory usage for hardware-offloaded rules that don't need benefits provided by percpu allocated stats (improved software TC fast-path performance). Set the flag for all compatible actions. Modify acinclude.m4 to use OVS-internal pkt_cls.h implementation when TCA_ACT_FLAGS is not defined by kernel headers and to manually define struct nla_bitfield32 in netlink.h (new file) when it is not defined by kernel headers. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: Add compat fix for old kernelsRoi Dayan2019-11-111-0/+2
| | | | | | | | | | | | In kernels older than 4.8, struct tcf_t didn't have the firstuse. If openvswitch is compiled with the compat pkt_cls.h then there is a struct size mismatch between openvswitch and the kernel which cause parsing netlink actions to fail. After this commit parsing the netlink actions pass even if compiled with the compat pkt_cls.h. Signed-off-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: add compatibility headers for tc mpls actionJohn Hurley2019-08-012-0/+38
| | | | | | | | | | OvS includes compat code for several TC actions including vlan, mirred and tunnel key. MPLS actions have recently been added to TC in the kernel. In preparation for adding TC offload code for MPLS, add the MPLS compat code. Signed-off-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: add SCTP netfilter states for older kernelsAaron Conole2019-05-242-0/+27
| | | | | | | | | | | | | Bake in the SCTP states from the kernel UAPI. This means an older revision of the kernel headers won't interfere with the SCTP display enhancement. Additionally, if a newer version is available, or if x-compiling the datapath module we defer to that version (since this is just meant to provide the missing definitions). This will be used in a future commit. Signed-off-by: Aaron Conole <aconole@redhat.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
* compat: add compatibility headers for tc skbedit actionJohn Hurley2019-04-092-0/+58
| | | | | | | | | | OvS includes compat code for several TC actions including vlan, mirred and tunnel key. Add support for using skbedit actions when compiling user-space code against older kernel headers. Signed-off-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* lib/tc: add ingress ratelimiting support for tc-offloadPieter Jansen van Vuuren2019-03-041-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Firstly this patch introduces the notion of reserved priority, as the filter implementing ingress policing would require the highest priority. Secondly it allows setting rate limiters while tc-offloads has been enabled. Lastly it installs a matchall filter that matches all traffic and then applies a police action, when configuring an ingress rate limiter. An example of what to expect: OvS CLI: ovs-vsctl set interface <netdev_name> ingress_policing_rate=5000 ovs-vsctl set interface <netdev_name> ingress_policing_burst=100 Resulting TC filter: filter protocol ip pref 1 matchall chain 0 filter protocol ip pref 1 matchall chain 0 handle 0x1 not_in_hw action order 1: police 0x1 rate 5Mbit burst 125Kb mtu 64Kb action drop/continue overhead 0b ref 1 bind 1 installed 3 sec used 3 sec Action statistics: Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.200 () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 131072 16384 16384 60.13 4.49 ovs-vsctl list interface <netdev_name> _uuid : 2ca774e8-8b95-430f-a2c2-f8f742613ab1 admin_state : up ... ingress_policing_burst: 100 ingress_policing_rate: 5000 ... type : "" Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* lib/tc: add geneve with option match offloadPieter Jansen van Vuuren2018-09-201-0/+25
| | | | | | | Add TC offload support for classifying geneve tunnels with options. Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* lib/tc: add geneve with option encap action offloadPieter Jansen van Vuuren2018-09-201-0/+23
| | | | | | | Add TC offload support for encapsulating geneve tunnels with options. Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* lib/tc: Support matching on ip tunnel tos and ttlOr Gerlitz2018-08-011-1/+6
| | | | | | | | | Support matching on tos and ttl of ip tunnels for the TC data-path. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* lib/tc: Support setting tos and ttl for TC IP tunnelsOr Gerlitz2018-08-011-2/+8
| | | | | | | | Allow to set the tos and ttl for TC tunnels. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* Add support to offload QinQ double VLAN headers matchJianbo Liu2018-07-251-1/+5
| | | | | | | | | | Currently the inner VLAN header is ignored when using the TC data-path. As TC flower supports QinQ, now we can offload the rules to match on both outer and inner VLAN headers. Signed-off-by: Jianbo Liu <jianbol@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* netdev-tc-offloads: Add support for IP fragmentationRoi Dayan2018-03-211-2/+3
| | | | | | | | | Add support for frag no, first and later. Signed-off-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Shahar Klein <shahark@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: Add act_pedit compatibility for old kernelsPaul Blakey2017-11-162-0/+73
| | | | | | | | Added compatibility for action pedit. Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* compat: Update tc compatibility headerPaul Blakey2017-08-111-4/+47
| | | | | | | | | Update to include up to flower ttl matching. Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Acked-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Joe Stringer <joe@ovn.org>
* compat: Add tc compatibility headers for old kernelsPaul Blakey2017-05-304-0/+255
| | | | | | | | | | | | | | Added compatibility headers for actions vlan and tunnel key. Do not use compat code when compiling kernel datapath there is no need for it as TC compatibility is not provided there. In other words, the compat code is only used when compiling user-space code against old kernel headers. Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Acked-by: Flavio Leitner <fbl@sysclose.org> Signed-off-by: Simon Horman <simon.horman@netronome.com>
* Do not seemingly #include Linux-specific headers on other platforms.Ben Pfaff2014-08-044-709/+0
| | | | | | | | | | | | | | | | | | Until now, the OVS source tree has had a whole maze of header files that make "#include <linux/openvswitch.h>" work OK regardless of platform, but this confuses everyone new to the tree, at first glance, and is difficult to understand at second glance too. This commit renames include/linux/openvswitch.h to datapath/linux/compat/include/linux/openvswitch.h without other change, then modifies the userspace build to generate a header that makes sense in portable Open vSwitch userspace from that header. It then removes all the remaining include/linux/* files since they are now unused. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* datapath: reorder action netlink attribute definition for upstreamingAndy Zhou2014-07-241-3/+4
| | | | | | | | | | | | | | | | | Keeping the order of netlink attribute definition in the order of upstreaming is the best way to keep all released user space program forward compatible with upstreamed kernel modules. Adjust action netlink attribute order to match with the current upstreaming plan. Recirc and hash actions are introduced in branch 2.3, which will be fixed by the patch. The MPLS actions have been released since branch-2.1 but there is no kernel implementation of them prior to branch 2.3. Thus the ordering change should not affect them. Signed-off-by: Andy Zhou <azhou@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com>
* datapath: Add basic MPLS support to kernelSimon Horman2014-06-241-5/+4
| | | | | | | | | | | | | | Allow datapath to recognize and extract MPLS labels into flow keys and execute actions which push, pop, and set labels on packets. Based heavily on work by Leo Alterman, Ravi K, Isaku Yamahata and Joe Stringer. Cc: Ravi K <rkerur@gmail.com> Cc: Leo Alterman <lalterman@nicira.com> Cc: Isaku Yamahata <yamahata@valinux.co.jp> Cc: Joe Stringer <joe@wand.net.nz> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Jesse Gross <jesse@nicira.com>
* datapath: Add support for Geneve tunneling.Jesse Gross2014-06-201-1/+2
| | | | | | | | | | | | | | | | | | | | | | This adds support for Geneve - Generic Network Virtualization Encapsulation. The protocol is documented at http://tools.ietf.org/html/draft-gross-geneve-00 The kernel implementation is completely agnostic to the options that are in use and can handle newly defined options without further work. It does this by simply matching on a byte array of options and allowing userspace to setup flows on this array. Userspace currently implements only support for basic version of Geneve. It can work with the base header (including the VNI) and is capable of parsing options but does not currently support any particular option definitions. Over time, the intention is to allow options to be matched through OpenFlow without requiring explicit support in OVS userspace. Signed-off-by: Jesse Gross <jesse@nicira.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Pravin B Shelar <pshelar@nicira.com>
* tunnel: Add support for matching on OAM packets.Jesse Gross2014-06-191-0/+1
| | | | | | | | | | | Some tunnel formats have mechanisms for indicating that packets are OAM frames that should be handled specially (either as high priority or not forwarded beyond an endpoint). This provides support for allowing those types of packets to be matched. Signed-off-by: Jesse Gross <jesse@nicira.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Pravin B Shelar <pshelar@nicira.com>
* datapath: Wrap struct ovs_key_ipv4_tunnel in a new structure.Jesse Gross2014-06-191-1/+1
| | | | | | | | | | | | | | | | Currently, the flow information that is matched for tunnels and the tunnel data passed around with packets is the same. However, as additional information is added this is not necessarily desirable, as in the case of pointers. This adds a new structure for tunnel metadata which currently contains only the existing struct. This change is purely internal to the kernel since the current OVS_KEY_ATTR_IPV4_TUNNEL is simply a compressed version of OVS_KEY_ATTR_TUNNEL that is translated at flow setup. Signed-off-by: Jesse Gross <jesse@nicira.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Pravin B Shelar <pshelar@nicira.com>
* util: Move definition of HANDLE here.Ben Pfaff2014-06-131-5/+1
| | | | | | | | | | A few Open vSwitch source files use a type named HANDLE on Windows systems, in a way that makes it easier to avoid #ifdefs if we have a dummy definition on other platforms. <linux/types.h> was a really weird place for this dummy definition. This commit moves it to util.h. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Gurucharan Shetty <gshetty@nicira.com>
* openvswitch.h: Clarify use of key attributes.Jarno Rajahalme2014-04-281-1/+3
| | | | | | | | | Key attributes relating to actual packet headers are ignored for OVS_PACKET_CMD_EXECUTE as the header key attributes are retrieved from the packet itself. Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* openvswitch.h: Note that 64 bit ints are 4-aligned.Jarno Rajahalme2014-04-281-0/+1
| | | | | | | | | | | In general, all Netlink 64-bit data may be 4-byte aligned, due to netlink header and attributes being 4-aligned. To avoid unaligned access the data should be copied out of the netlink attribute before access. Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* datapath: add hash actionAndy Zhou2014-04-211-1/+2
| | | | | Signed-off-by: Andy Zhou <azhou@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* openvswitch.h: rename hash action definitionAndy Zhou2014-04-201-2/+2
| | | | | | | | Rename hash_bias to hash_basis to make it consistent with similar usages. Signed-off-by: Andy Zhou <azhou@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* dpif-netdev: Move hash function out of the recirc action, into its own actionAndy Zhou2014-04-161-12/+9
| | | | | | | | | | | | | | | | Currently recirculation action can optionally compute hash. This patch adds a hash action that is independent of the recirc action, which no longer computes hash. For megaflow bond with recirc, the output to a bond port action will look like: hash(hash_l4(0)), recirc(<recirc_id>) Obviously, when a recirculation application that does not depend on hash value can just use the recirc action alone. Signed-off-by: Andy Zhou <azhou@nicira.com> Reviewed-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Acked-by: Pravin B Shelar <pshelar@nicira.com
* datapath: Allow each vport to have an array of 'port_id's.Alex Wang2014-04-141-4/+9
| | | | | | | | | | | In order to allow handlers directly read upcalls from datapath, we need to support per-handler netlink socket for each vport in datapath. This commit makes this happen. Also, it is guaranteed to be backward compatible with previous branch. Signed-off-by: Alex Wang <alexw@nicira.com> Acked-by: Thomas Graf <tgraf@redhat.com> Acked-by: Pravin B Shelar <pshelar@nicira.com>
* recirculation: Adjust ovs_key_attr ABIAndy Zhou2014-03-281-3/+4
| | | | | | | | Jesse helped to clarify how to maintain the ABI. Making the adjustment accordingly and add some comments. Signed-off-by: Andy Zhou <azhou@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* recirculation: Some cosmetic fixesYAMAMOTO Takashi2014-03-281-1/+2
| | | | | | | | | Wrap long lines, fix whitespaces, and fix a typo in a comment. No functional changes are intended. Cc: Andy Zhou <azhou@nicira.com> Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Signed-off-by: Andy Zhou <azhou@nicira.com>
* dpif-netdev: user space datapath recirculationAndy Zhou2014-03-251-1/+28
| | | | | | | | | Add basic recirculation infrastructure and user space data path support for it. The following bond mega flow patch will make use of this infrastructure. Signed-off-by: Andy Zhou <azhou@nicira.com> Acked-by: Ben Pfaff <blp@nicira.com>
* datapath: Avoid assigning a NULL pointer to flow actions.Jarno Rajahalme2014-03-241-1/+3
| | | | | | | | | | | | Flow SET can accept an empty set of actions, with the intended semantics of leaving existing actions unmodified. This seems to have been brokin after OVS 1.7, as we have assigned the flow's actions pointer to NULL in this case, but we never check for the NULL pointer later on. This patch restores the intended behavior and documents it in the include/linux/openvswitch.h. Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
* Always insert MPLS labels after VLAN tags.Ben Pfaff2014-02-061-4/+4
| | | | | | | | | | | | OpenFlow 1.1 and 1.2 always inserted MPLS labels after VLAN tags. OpenFlow 1.3 and 1.4 insert MPLS labels before VLAN tags. OpenFlow 1.3.4 and 1.5, both in preparation, recognize that the change in 1.3 was an error and revert it. This commit implements that reversion in Open vSwitch. EXT-457. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Simon Horman <horms@verge.net.au>
* poll-loop: Port to Windows.Linda Sun2014-01-171-0/+4
| | | | | | | | | | | Use WaitForMultipleObjects for polling on windows. This works on all kinds of objects, e.g. sockets, files, especially ioctl calls to the kernel. poll_fd_wait_event() is used if events need to be passed to pollfds. latch is signaled with event, to be waited/polled by WaitForMultipleObjects() as well. Changed array of fds to hmap to check for duplicate fds. Signed-off-by: Linda Sun <lsun@vmware.com> Signed-off-by: Ben Pfaff <blp@nicira.com>
* datapath: Drop user features if old user space attempted to create datapathThomas Graf2013-12-161-1/+9
| | | | | | | | | | Drop user features if an outdated user space instance that does not understand the concept of user_features attempted to create a new datapath. Signed-off-by: Thomas Graf <tgraf@suug.ch> Reviewed-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* datapath: Allow user space to announce ability to accept unaligned Netlink ↵Thomas Graf2013-12-161-0/+4
| | | | | | | | messages Signed-off-by: Thomas Graf <tgraf@suug.ch> Reviewed-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* TCP flags matching support.Jarno Rajahalme2013-10-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tcp_flags=flags/mask Bitwise match on TCP flags. The flags and mask are 16-bit num‐ bers written in decimal or in hexadecimal prefixed by 0x. Each 1-bit in mask requires that the corresponding bit in port must match. Each 0-bit in mask causes the corresponding bit to be ignored. TCP protocol currently defines 9 flag bits, and additional 3 bits are reserved (must be transmitted as zero), see RFCs 793, 3168, and 3540. The flag bits are, numbering from the least significant bit: 0: FIN No more data from sender. 1: SYN Synchronize sequence numbers. 2: RST Reset the connection. 3: PSH Push function. 4: ACK Acknowledgement field significant. 5: URG Urgent pointer field significant. 6: ECE ECN Echo. 7: CWR Congestion Windows Reduced. 8: NS Nonce Sum. 9-11: Reserved. 12-15: Not matchable, must be zero. Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com> Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
* datapath: collect mega flow mask statsAndy Zhou2013-10-221-3/+14
| | | | | | | | Collect mega flow mask stats. ovs-dpctl show command can be used to display them. Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* datapath: Add SCTP supportJoe Stringer2013-08-221-0/+6
| | | | | | | | | | | | | | This patch adds support for rewriting SCTP src,dst ports similar to the functionality already available for TCP/UDP. Rewriting SCTP ports is expensive due to double-recalculation of the SCTP checksums; this is performed to ensure that packets traversing OVS with invalid checksums will continue to the destination with any checksum corruption intact. Reviewed-by: Simon Horman <horms@verge.net.au> Signed-off-by: Joe Stringer <joe@wand.net.nz> Signed-off-by: Ben Pfaff <blp@nicira.com>
* datapath: Mega flow implementationAndy Zhou2013-06-201-1/+8
| | | | | | | | | | | | | | | | | | | | Add wildcarded flow support in kernel datapath. Wildcarded flow can improve OVS flow set up performance by avoid sending matching new flows to the user space program. The exact performance boost will largely dependent on wildcarded flow hit rate. In case all new flows hits wildcard flows, the flow set up rate is within 5% of that of linux bridge module. Pravin has made significant contributions to this patch. Including API clean ups and bug fixes. Co-authored-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Andy Zhou <azhou@nicira.com> [jesse: Additional documentation, fix memory leak, and improve validation.] Signed-off-by: Jesse Gross <jesse@nicira.com>
* Make it more obvious that OVS_KEY_ATTR_MPLS may be an arraySimon Horman2013-05-011-2/+4
| | | | | | | | | | | | | | | | | Note that OVS_KEY_ATTR_MPLS may be an array of ovs_key_mpls and that the acceptable length may be restricted by the implementation. Currently the user-space datapath and proposed kernel datapath implementation restrict the length to a single element. Also update the mpls_top_lse name of the element of struct ovs_key_mpls, as it is an array of LSEs and thus not necessarily just the top LSE. As requested by Jesse Gross Cc: Jesse Gross <jesse@nicira.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Jesse Gross <jesse@nicira.com>
* datapath: Use ETH_ALEN to define ethernet addressesThomas Graf2013-03-291-6/+7
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: Jesse Gross <jesse@nicira.com>
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