net/mlx5e: do not create xdp_redirect for non-uplink rep

Browse source

XDP and XDP socket require extra SQ/RQ/CQs. Most of these resources
are dynamically created: no XDP program loaded, no resources are
created. One exception is the SQ/CQ created for XDP_REDRIECT, used
for other netdev to forward packet to mlx5 for transmit. The patch
disables creation of SQ and CQ used for egress XDP_REDIRECT, by
checking whether ndo_xdp_xmit is set or not.

For netdev without XDP support such as non-uplink representor, this
saves around 0.35MB of memory, per representor netdevice per channel.

Signed-off-by: William Tu <witu@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20241031125856.530927-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

William Tu 2024-10-31 14:58:56 +02:00 • committed by Jakub Kicinski

parent bb135e4012

commit 355cf27497

1 changed files with 11 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

17

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

View file