net/mlx5: LAG, block RoCE and VF LAG for SD devices

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Socket Direct devices manage their own LAG via SD LAG infrastructure.
Block the standard netdev-event-driven LAG path (RoCE LAG and VF LAG)
for SD devices to prevent conflicting LAG configurations.

Expose mlx5_sd_is_supported() as a public helper that encapsulates all
SD eligibility checks. Use it in mlx5_lag_dev_alloc() to skip netdev
notifier registration for SD-capable devices at alloc time. Some sd
code is reordered to expose the new function, no logic is changed.

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/20260531113954.395443-9-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Shay Drory 2026-05-31 14:39:48 +03:00 • committed by Jakub Kicinski

parent 3c10311083

commit 8b9fffb6d3

3 changed files with 63 additions and 21 deletions

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13

drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c

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60

drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c

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11

drivers/net/ethernet/mellanox/mlx5/core/lib/sd.h

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