[PATCH 5.11 105/775] net/mlx5e: Enable XDP for Connect-X IPsec capable devices

From: Greg Kroah-Hartman
Date: Mon Mar 01 2021 - 18:14:02 EST


From: Raed Salem <raeds@xxxxxxxxxx>

[ Upstream commit e33f9f5f2d3a5fa97728a43708f41da2d4faae65 ]

This limitation was inherited by previous Innova (FPGA) IPsec
implementation, it uses its private set of RQ handlers which
does not support XDP, for Connect-X this is no longer true.

Fix by keeping this limitation only for Innova IPsec supporting devices,
as otherwise this limitation effectively wrongly blocks XDP for all
future Connect-X devices for all flows even if IPsec offload is not
used.

Fixes: 2d64663cd559 ("net/mlx5: IPsec: Add HW crypto offload support")
Signed-off-by: Raed Salem <raeds@xxxxxxxxxx>
Reviewed-by: Alaa Hleihel <alaa@xxxxxxxxxx>
Reviewed-by: Tariq Toukan <tariqt@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 3fc7d18ac868b..92436569ce86b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4455,8 +4455,9 @@ static int mlx5e_xdp_allowed(struct mlx5e_priv *priv, struct bpf_prog *prog)
return -EINVAL;
}

- if (MLX5_IPSEC_DEV(priv->mdev)) {
- netdev_warn(netdev, "can't set XDP with IPSec offload\n");
+ if (mlx5_fpga_is_ipsec_device(priv->mdev)) {
+ netdev_warn(netdev,
+ "XDP is not available on Innova cards with IPsec support\n");
return -EINVAL;
}

--
2.27.0