Function send_doorbell

dpdk/drivers/regex/mlx5/mlx5_regex_fastpath.c:207–222

}

static inline void
send_doorbell(struct mlx5_regex_priv *priv, struct mlx5_regex_hw_qp *qp)
{
	size_t wqe_offset = (qp->db_pi & (qp_size_get(qp) - 1)) *
			    (MLX5_SEND_WQE_BB << (priv->has_umr ? 2 : 0)) +
			    (priv->has_umr ? MLX5_REGEX_UMR_WQE_SIZE : 0);
	uint8_t *wqe = (uint8_t *)(uintptr_t)qp->qp_obj.wqes + wqe_offset;
	uint32_t actual_pi = (priv->has_umr ? ((1 + qp->db_pi) * 4) : qp->db_pi)
			     & MLX5_REGEX_MAX_WQE_INDEX;

	/* Or the fm_ce_se instead of set, avoid the fence be cleared. */
	((struct mlx5_wqe_ctrl_seg *)wqe)->fm_ce_se |= MLX5_WQE_CTRL_CQ_UPDATE;
	mlx5_doorbell_ring(&priv->uar.bf_db, *(volatile uint64_t *)wqe,
			   actual_pi, &qp->qp_obj.db_rec[MLX5_SND_DBR],
			   !priv->uar.dbnc);
}

static inline int
get_free(struct mlx5_regex_hw_qp *qp, uint8_t has_umr) {