diff options
| author | Tariq Toukan <tariqt@mellanox.com> | 2018-02-20 16:17:54 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-06-02 02:48:15 +0300 |
| commit | 5ffd81943d7a57423f204cd5844bf430b5634472 (patch) | |
| tree | 612fa8d725a6d1b878335840f05a80ada6ea588e /drivers/net | |
| parent | 069d11465a802a2b58ce530312b7bb6e1e0b61a9 (diff) | |
| download | linux-5ffd81943d7a57423f204cd5844bf430b5634472.tar.xz | |
net/mlx5e: RX, Always prefer Linear SKB configuration
Prefer the linear SKB configuration of Legacy RQ over the
non-linear one of Striding RQ.
This implies that ConnectX-4 LX now uses legacy RQ by default,
as it does not support the linear configuration of Striding RQ.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 2c634e50d051..333d4ed52b94 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -4405,9 +4405,16 @@ void mlx5e_build_nic_params(struct mlx5_core_dev *mdev, MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS, params->rx_cqe_compress_def); /* RQ */ - if (mlx5e_striding_rq_possible(mdev, params)) - MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ, - !slow_pci_heuristic(mdev)); + /* Prefer Striding RQ, unless any of the following holds: + * - Striding RQ configuration is not possible/supported. + * - Slow PCI heuristic. + * - Legacy RQ would use linear SKB while Striding RQ would use non-linear. + */ + if (!slow_pci_heuristic(mdev) && + mlx5e_striding_rq_possible(mdev, params) && + (mlx5e_rx_mpwqe_is_linear_skb(mdev, params) || + !mlx5e_rx_is_linear_skb(mdev, params))) + MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ, true); mlx5e_set_rq_type(mdev, params); mlx5e_init_rq_type_params(mdev, params); |