This series adds support for RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP and RTE_FLOW_ACTION_TYPE_VXLAN_DECAP to mlx5.
Since these actions are supported at the switch level, the "transfer" attribute must be set on such flow rules. They must also be combined with a port redirection action to make sense. A typical use case is port representors in switchdev mode, with VXLAN traffic encapsulation performed on traffic coming *from* a representor and decapsulation on traffic going *to* that representor, in order to transparently assign a given VXLAN to VF traffic. Since only ingress is supported, encapsulation flow rules are normally applied on a physical port and emit traffic to a port representor. The opposite order is used for decapsulation. Like other mlx5 switch flow rule actions, these are implemented through Linux's TC flower API. Since the Linux interface for VXLAN encap/decap involves virtual network devices (i.e. ip link add type vxlan [...]), the PMD automatically spawns them on a needed basis through Netlink calls. The added complexity necessarily results in a rather convoluted PMD implementation. This series relies on "ethdev: add flow API object converter" [1] which should applied first since testpmd does not provide a means to test VXLAN encap otherwise. [1] https://patches.dpdk.org/project/dpdk/list/?series=1123 Adrien Mazarguil (8): net/mlx5: speed up interface index retrieval for flow rules net/mlx5: clean up redundant interface name getters net/mlx5: rename internal function net/mlx5: enhance TC flow rule send/ack function net/mlx5: prepare switch flow rule parser for encap offloads net/mlx5: add convenience macros to switch flow rule engine net/mlx5: add VXLAN encap support to switch flow rules net/mlx5: add VXLAN decap support to switch flow rules drivers/net/mlx5/Makefile | 75 ++ drivers/net/mlx5/mlx5.c | 74 +- drivers/net/mlx5/mlx5.h | 28 +- drivers/net/mlx5/mlx5_ethdev.c | 188 ++-- drivers/net/mlx5/mlx5_flow.c | 16 +- drivers/net/mlx5/mlx5_nl.c | 9 +- drivers/net/mlx5/mlx5_nl_flow.c | 1763 ++++++++++++++++++++++++++++++++-- 7 files changed, 1871 insertions(+), 282 deletions(-) -- 2.11.0
