C++ (Cpp) mlx5_cqwq_get_wqe Examples

Example #1

static inline void mlx5e_read_cqe_slot(struct mlx5e_cq *cq, u32 cqcc,
				       void *data)
{
	u32 ci = cqcc & cq->wq.sz_m1;

	memcpy(data, mlx5_cqwq_get_wqe(&cq->wq, ci), sizeof(struct mlx5_cqe64));
}

Example #2

File: en_txrx.c Project: doniexun/linux

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;
}

Example #3

File: mlx5_en_txrx.c Project: hbsciw/freebsd

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);
}

Example #4

File: en_main.c Project: Dyoed/ath

static int mlx5e_create_cq(struct mlx5e_channel *c,
			   struct mlx5e_cq_param *param,
			   struct mlx5e_cq *cq)
{
	struct mlx5e_priv *priv = c->priv;
	struct mlx5_core_dev *mdev = priv->mdev;
	struct mlx5_core_cq *mcq = &cq->mcq;
	int eqn_not_used;
	int irqn;
	int err;
	u32 i;

	param->wq.numa = cpu_to_node(c->cpu);
	param->eq_ix   = c->ix;

	err = mlx5_cqwq_create(mdev, &param->wq, param->cqc, &cq->wq,
			       &cq->wq_ctrl);
	if (err)
		return err;

	mlx5_vector2eqn(mdev, param->eq_ix, &eqn_not_used, &irqn);

	cq->napi        = &c->napi;

	mcq->cqe_sz     = 64;
	mcq->set_ci_db  = cq->wq_ctrl.db.db;
	mcq->arm_db     = cq->wq_ctrl.db.db + 1;
	*mcq->set_ci_db = 0;
	*mcq->arm_db    = 0;
	mcq->vector     = param->eq_ix;
	mcq->comp       = mlx5e_completion_event;
	mcq->event      = mlx5e_cq_error_event;
	mcq->irqn       = irqn;
	mcq->uar        = &priv->cq_uar;

	for (i = 0; i < mlx5_cqwq_get_size(&cq->wq); i++) {
		struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(&cq->wq, i);

		cqe->op_own = 0xf1;
	}

	cq->channel = c;

	return 0;
}