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net/mlx5e: TC, enable steering for SD LAG

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Enable TC flow steering for SD LAG mode by extending multiport
eligibility checks and peer flow handling.

SD LAG operates similarly to MPESW for TC offloads - flows on
secondary devices need peer flow creation on the primary, and
multiport forwarding rules are eligible when either MPESW or SD LAG
is active.

Add mlx5_lag_is_sd() helper to query SD LAG mode, and
mlx5_sd_is_primary() to identify the primary device. Redirect uplink
priv/proto_dev queries to the primary device's eswitch in SD
configurations.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260531113954.395443-13-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Shay Drory 2026-05-31 14:39:52 +03:00 • committed by Jakub Kicinski
commit 9f062b931d
7 changed files with 92 additions and 5 deletions
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