4.4-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit ab0394fe2c258fdb5086c51a251b28f8ee7ab35c ]
Ethtool LRO enable/disable is broken, as of today we only modify TCP TIRs in order to apply the requested configuration.
Hardware requires that all TIRs pointing to the same RQ should share the same LRO configuration. For that all other TIRs' LRO fields must be modified as well.
Fixes: 5c50368f3831 ('net/mlx5e: Light-weight netdev open/stop') Signed-off-by: Tariq Toukan tariqt@mellanox.com Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 90e876ecc720..765b069d6a90 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -1304,7 +1304,7 @@ static void mlx5e_build_tir_ctx_lro(void *tirc, struct mlx5e_priv *priv) lro_timer_supported_periods[2])); }
-static int mlx5e_modify_tir_lro(struct mlx5e_priv *priv, int tt) +static int mlx5e_modify_tirs_lro(struct mlx5e_priv *priv) { struct mlx5_core_dev *mdev = priv->mdev;
@@ -1312,6 +1312,7 @@ static int mlx5e_modify_tir_lro(struct mlx5e_priv *priv, int tt) void *tirc; int inlen; int err; + int tt;
inlen = MLX5_ST_SZ_BYTES(modify_tir_in); in = mlx5_vzalloc(inlen); @@ -1323,7 +1324,11 @@ static int mlx5e_modify_tir_lro(struct mlx5e_priv *priv, int tt)
mlx5e_build_tir_ctx_lro(tirc, priv);
- err = mlx5_core_modify_tir(mdev, priv->tirn[tt], in, inlen); + for (tt = 0; tt < MLX5E_NUM_TT; tt++) { + err = mlx5_core_modify_tir(mdev, priv->tirn[tt], in, inlen); + if (err) + break; + }
kvfree(in);
@@ -1870,8 +1875,10 @@ static int mlx5e_set_features(struct net_device *netdev, mlx5e_close_locked(priv->netdev);
priv->params.lro_en = !!(features & NETIF_F_LRO); - mlx5e_modify_tir_lro(priv, MLX5E_TT_IPV4_TCP); - mlx5e_modify_tir_lro(priv, MLX5E_TT_IPV6_TCP); + err = mlx5e_modify_tirs_lro(priv); + if (err) + mlx5_core_warn(priv->mdev, "lro modify failed, %d\n", + err);
if (was_opened) err = mlx5e_open_locked(priv->netdev);