diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/wq.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/wq.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wq.h b/drivers/net/ethernet/mellanox/mlx5/core/wq.h index 4d629e5ddbc7..e4ef1d24a3ad 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/wq.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/wq.h @@ -243,6 +243,23 @@ static inline struct mlx5_cqe64 *mlx5_cqwq_get_cqe(struct mlx5_cqwq *wq) return cqe; } +static inline +struct mlx5_cqe64 *mlx5_cqwq_get_cqe_enahnced_comp(struct mlx5_cqwq *wq) +{ + u8 sw_validity_iteration_count = mlx5_cqwq_get_wrap_cnt(wq) & 0xff; + u32 ci = mlx5_cqwq_get_ci(wq); + struct mlx5_cqe64 *cqe; + + cqe = mlx5_cqwq_get_wqe(wq, ci); + if (cqe->validity_iteration_count != sw_validity_iteration_count) + return NULL; + + /* ensure cqe content is read after cqe ownership bit/validity byte */ + dma_rmb(); + + return cqe; +} + static inline u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq) { return (u32)wq->fbc.sz_m1 + 1; |