net/mlx5: VLAN push on RX, pop on TX

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Some older NIC hardware isn't capable of doing VLAN push on RX and pop
on TX.

A workaround has been added in software to support it, but it has a
performance penalty since it requires a hairpin + loopback.

There's no such limitation with the newer NICs, so no need to pay the
price of the w/a. With this change the software w/a is disabled for
certain HW versions and steering modes that support it.

Signed-off-by: Dima Chumak <dchumak@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

...

This commit is contained in:

Dima Chumak 2021-12-13 13:21:46 +02:00 • committed by Saeed Mahameed

parent 8348b71ccd

commit 60dc0ef674

1 changed files with 3 additions and 1 deletions

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4

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

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