VXLAN decap in OVS-DPDK configuration consists of two flows: F1: in_port(ens1f0),eth(),ipv4(),udp(), actions:tnl_pop(vxlan_sys_4789) F2: tunnel(),in_port(vxlan_sys_4789),eth(),ipv4(), actions:ens1f0_0
F1 is a classification flow. It has outer headers matches and it classifies the packet as a VXLAN packet, and using tnl_pop action the packet continues processing in F2. F2 is a flow that has matches on tunnel metadata as well as on the inner packet headers (as any other flow). In order to fully offload VXLAN decap path, both F1 and F2 should be offloaded. As there are more than one flow in HW, it is possible that F1 is done by HW but F2 is not. Packet is received by SW, and should be processed starting from F2 as F1 was already done by HW. Rte_flows are applicable only on physical port IDs. Keeping the original physical in port on which the packet is received on enables applying vport flows (e.g. F2) on that physical port. This patch-set makes use of [1] introduced in DPDK 20.11, that adds API for tunnel offloads. Note that MLX5 PMD has a bug that the tnl_pop private actions must be first. In OVS it is not. Fixing this issue is scheduled for 21.05 (and stable 20.11.2). Meanwhile, tests were done with a workaround for it [2]. v2-v1: - Tracking original in_port, and applying vport on that physical port instead of all PFs. v3-v2: - Traversing ports using a new API instead of flow_dump. - Refactor packet state recover logic, with bug fix for error pop_header. - One ref count for netdev in non-tunnel case. - Rename variables, comments, rebase. v4-v3: - Extract orig_in_port from physdev for flow modify. - Miss handling fixes. v5-v4: - Drop refactor offload rule creation commit. - Comment about setting in_port in restore. - Refactor vports flow offload commit. v6-v5: - Fixed duplicate netdev ref bug. v7-v6: - Adopting Ilya's diff, with a minor fix in set_error stub. - Fixed abort (remove OVS_NOT_REACHED()) with tunnels other than vxlan ("netdev-offload-dpdk: Support tunnel pop action."). Travis: v1: https://travis-ci.org/github/elibritstein/OVS/builds/756418552 v2: https://travis-ci.org/github/elibritstein/OVS/builds/758382963 v3: https://travis-ci.org/github/elibritstein/OVS/builds/761089087 v4: https://travis-ci.org/github/elibritstein/OVS/builds/763146966 v5: https://travis-ci.org/github/elibritstein/OVS/builds/765271879 v6: https://travis-ci.org/github/elibritstein/OVS/builds/765816800 v7: Have a problem to run GitHub Actions: v1: https://github.com/elibritstein/OVS/actions/runs/515334647 v2: https://github.com/elibritstein/OVS/actions/runs/554986007 v3: https://github.com/elibritstein/OVS/actions/runs/613226225 v4: https://github.com/elibritstein/OVS/actions/runs/658415274 v5: https://github.com/elibritstein/OVS/actions/runs/704357369 v6: https://github.com/elibritstein/OVS/actions/runs/716304028 v7: https://github.com/elibritstein/OVS/actions/runs/964875737 [1] https://mails.dpdk.org/archives/dev/2020-October/187314.html [2] https://github.com/elibritstein/dpdk-stable/pull/1 Eli Britstein (10): netdev-offload: Add HW miss packet state recover API. netdev-dpdk: Introduce DPDK tunnel APIs. netdev-offload: Introduce an API to traverse ports. netdev-dpdk: Add flow_api support for netdev vxlan vports. netdev-offload-dpdk: Implement HW miss packet recover for vport. dpif-netdev: Add HW miss packet state recover logic. netdev-offload-dpdk: Change log rate limits. netdev-offload-dpdk: Support tunnel pop action. netdev-offload-dpdk: Support vports flows offload. netdev-dpdk-offload: Add vxlan pattern matching function. Ilya Maximets (2): netdev-offload: Allow offloading to netdev without ifindex. netdev-offload: Disallow offloading to unrelated tunneling vports. Sriharsha Basavapatna (1): dpif-netdev: Provide orig_in_port in metadata for tunneled packets. Documentation/howto/dpdk.rst | 1 + NEWS | 4 + lib/dpif-netdev.c | 68 +++- lib/netdev-dpdk.c | 118 ++++++ lib/netdev-dpdk.h | 103 ++++- lib/netdev-offload-dpdk.c | 708 +++++++++++++++++++++++++++++++--- lib/netdev-offload-provider.h | 6 + lib/netdev-offload-tc.c | 8 + lib/netdev-offload.c | 47 ++- lib/netdev-offload.h | 10 + lib/packets.h | 8 +- 11 files changed, 1011 insertions(+), 70 deletions(-) -- 2.28.0.2311.g225365fb51 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev