openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Tariq Toukan 2019-07-05 18:30:21 +03:00 committed by David S. Miller
parent 2b257a6e73
commit 37badd159c
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
View File

@ -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)