net/mlx5e: Properly block LRO when XDP is enabled
authorMaxim Mikityanskiy <maximmi@nvidia.com>
Tue, 12 Apr 2022 15:37:03 +0000 (18:37 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 25 May 2022 07:10:39 +0000 (09:10 +0200)
commite2b5e3844310ba1492c14b8f4b762afc3ca3348e
treeb61811fb83557d4ba7a27fee27372730a2c3c32a
parentaf3c4bf1f1f551d05e852397721957ae2efcc508
net/mlx5e: Properly block LRO when XDP is enabled

[ Upstream commit cf6e34c8c22fba66bd21244b95ea47e235f68974 ]

LRO is incompatible and mutually exclusive with XDP. However, the needed
checks are only made when enabling XDP. If LRO is enabled when XDP is
already active, the command will succeed, and XDP will be skipped in the
data path, although still enabled.

This commit fixes the bug by checking the XDP status in
mlx5e_fix_features and disabling LRO if XDP is enabled.

Fixes: 86994156c736 ("net/mlx5e: XDP fast RX drop bpf programs support")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/ethernet/mellanox/mlx5/core/en_main.c