diff options
| author | Tariq Toukan <tariqt@mellanox.com> | 2019-07-05 18:30:21 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-05 16:29:19 -0700 |
| commit | 37badd159c52768e31aab2c978b9f837e4dd66bc (patch) | |
| tree | bb39334f8a99b5a1019c8ca2b73e71d7c0758fc7 /drivers/net | |
| parent | 2b257a6e736f5af17c796087b628cb320cdec062 (diff) | |
| download | linux-37badd159c52768e31aab2c978b9f837e4dd66bc.tar.bz2 | |
net/mlx5e: Introduce a fenced NOP WQE posting function
Similar to the existing mlx5e_post_nop(), but marks a fence
in the WQE control segment.
Added as a separate new function to not hurt the performance
of the common case.
To be used in a downstream patch of the series.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h index af6aec717d4e..ef16f9e41cf4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h @@ -58,6 +58,24 @@ mlx5e_post_nop(struct mlx5_wq_cyc *wq, u32 sqn, u16 *pc) return wqe; } +static inline struct mlx5e_tx_wqe * +mlx5e_post_nop_fence(struct mlx5_wq_cyc *wq, u32 sqn, u16 *pc) +{ + u16 pi = mlx5_wq_cyc_ctr2ix(wq, *pc); + struct mlx5e_tx_wqe *wqe = mlx5_wq_cyc_get_wqe(wq, pi); + struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl; + + memset(cseg, 0, sizeof(*cseg)); + + cseg->opmod_idx_opcode = cpu_to_be32((*pc << 8) | MLX5_OPCODE_NOP); + cseg->qpn_ds = cpu_to_be32((sqn << 8) | 0x01); + cseg->fm_ce_se = MLX5_FENCE_MODE_INITIATOR_SMALL; + + (*pc)++; + + return wqe; +} + static inline void mlx5e_fill_sq_frag_edge(struct mlx5e_txqsq *sq, struct mlx5_wq_cyc *wq, u16 pi, u16 nnops) |