struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq)
{
struct mlx5_cqwq *wq = &cq->wq;
u32 ci = mlx5_cqwq_get_ci(wq);
struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci);
int cqe_ownership_bit = cqe->op_own & MLX5_CQE_OWNER_MASK;
int sw_ownership_val = mlx5_cqwq_get_wrap_cnt(wq) & 1;
if (cqe_ownership_bit != sw_ownership_val)
return NULL;
/* ensure cqe content is read after cqe ownership bit */
rmb();
return cqe;
}
struct mlx5_cqe64 *
mlx5e_get_cqe(struct mlx5e_cq *cq)
{
struct mlx5_cqe64 *cqe;
cqe = mlx5_cqwq_get_wqe(&cq->wq, mlx5_cqwq_get_ci(&cq->wq));
if ((cqe->op_own ^ mlx5_cqwq_get_wrap_cnt(&cq->wq)) & MLX5_CQE_OWNER_MASK)
return (NULL);
mlx5_cqwq_pop(&cq->wq);
/* ensure cqe content is read after cqe ownership bit */
rmb();
return (cqe);
}