[ovs-dev] [PATCH RFC ovs 00/14] Netdev datapath VXLAN decap offload support

[Eli Britstein]

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. Vport flows (e.g. F2)
are applied on uplink ports attached to OVS.

This patch-set makes use of [1] introduced in DPDK 20.11, that adds API
for tunnel offloads, and based on top of [2] and [3]. It is posted as an
RFC until they are merged.

[1] https://mails.dpdk.org/archives/dev/2020-October/187314.html
[2] https://patchwork.ozlabs.org/project/openvswitch/list/?series=218063
[3] https://patchwork.ozlabs.org/project/openvswitch/list/?series=217966

Eli Britstein (12):
  netdev-offload: Add HW miss packet state recover API
  netdev-dpdk: Introduce DPDK tunnel APIs
  netdev-offload-dpdk: Implement flow dump create/destroy APIs
  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: Support tunnel pop action
  netdev-offload-dpdk: Refactor offload rule creation
  netdev-dpdk: Introduce an API to query if a dpdk port is an uplink
    port
  netdev-offload-dpdk: Consider netdev for mapping offload objects
  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.

 Documentation/howto/dpdk.rst  |   1 +
 NEWS                          |   2 +
 lib/dpif-netdev.c             |  49 ++-
 lib/netdev-dpdk.c             | 138 ++++++
 lib/netdev-dpdk.h             |  99 ++++-
 lib/netdev-offload-dpdk.c     | 789 +++++++++++++++++++++++++++++-----
 lib/netdev-offload-provider.h |   5 +
 lib/netdev-offload-tc.c       |   8 +
 lib/netdev-offload.c          |  29 +-
 lib/netdev-offload.h          |   1 +
 10 files changed, 992 insertions(+), 129 deletions(-)

-- 
2.28.0.546.g385c171