net/mlx5e: Support offloading TC NIC hairpin flows
We refer to TC NIC rule that involves forwarding as "hairpin". All hairpin rules from the current NIC device (called "func" in the code) to a given NIC device ("peer") are steered into the same hairpin RQ/SQ pair. The hairpin pair is set on demand and removed when there are no TC rules that need it. Here's a TC rule that matches on icmp, does header re-write of the dst mac and hairpin from RX/enp1s2f1 to TX/enp1s2f2 (enp1s2f1/2 are two mlx5 devices): tc filter add dev enp1s2f1 protocol ip parent ffff: prio 2 flower skip_sw ip_proto icmp action pedit ex munge eth dst set 10:22:33:44:55:66 pipe action mirred egress redirect dev enp1s2f2 Signed-off-by:Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
parent
77ab67b7
Please register or sign in to comment