C++ (Cpp) mlx5_wq_ll_get_wqe примеры использования

Пример #1

Файл: wq.c Проект: ANLAB-KAIST/mlnx-en

int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		      void *wqc, struct mlx5_wq_ll *wq,
		      struct mlx5_wq_ctrl *wq_ctrl)
{
	struct mlx5_wqe_srq_next_seg *next_seg;
	int max_direct = param->linear ? INT_MAX : 0;
	int err;
	int i;

	wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
	wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;

	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_db_alloc() failed, %d\n", err);
		return err;
	}

	err = mlx5_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
				  max_direct, &wq_ctrl->buf,
				  param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_buf_alloc() failed, %d\n", err);
		goto err_db_free;
	}

	wq->buf = wq_ctrl->buf.direct.buf;
	wq->db  = wq_ctrl->db.db;

	for (i = 0; i < wq->sz_m1; i++) {
		next_seg = mlx5_wq_ll_get_wqe(wq, i);
		next_seg->next_wqe_index = cpu_to_be16(i + 1);
	}
	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	wq->tail_next = &next_seg->next_wqe_index;

	wq_ctrl->mdev = mdev;

	return 0;

err_db_free:
	mlx5_db_free(mdev, &wq_ctrl->db);

	return err;
}

Пример #2

Файл: wq.c Проект: Xilinx/linux-xlnx

int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		      void *wqc, struct mlx5_wq_ll *wq,
		      struct mlx5_wq_ctrl *wq_ctrl)
{
	struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
	struct mlx5_wqe_srq_next_seg *next_seg;
	int err;
	int i;

	mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
		      MLX5_GET(wq, wqc, log_wq_sz),
		      fbc);

	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
		return err;
	}

	err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
				       &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	wq->fbc.frag_buf = wq_ctrl->buf;
	wq->db  = wq_ctrl->db.db;

	for (i = 0; i < fbc->sz_m1; i++) {
		next_seg = mlx5_wq_ll_get_wqe(wq, i);
		next_seg->next_wqe_index = cpu_to_be16(i + 1);
	}
	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	wq->tail_next = &next_seg->next_wqe_index;

	wq_ctrl->mdev = mdev;

	return 0;

err_db_free:
	mlx5_db_free(mdev, &wq_ctrl->db);

	return err;
}

Пример #3

Файл: en_main.c Проект: Kirill2013/kasan

static int mlx5e_create_rq(struct mlx5e_channel *c,
			   struct mlx5e_rq_param *param,
			   struct mlx5e_rq *rq)
{
	struct mlx5e_priv *priv = c->priv;
	struct mlx5_core_dev *mdev = priv->mdev;
	void *rqc = param->rqc;
	void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
	int wq_sz;
	int err;
	int i;

	err = mlx5_wq_ll_create(mdev, &param->wq, rqc_wq, &rq->wq,
				&rq->wq_ctrl);
	if (err)
		return err;

	rq->wq.db = &rq->wq.db[MLX5_RCV_DBR];

	wq_sz = mlx5_wq_ll_get_size(&rq->wq);
	rq->skb = kzalloc_node(wq_sz * sizeof(*rq->skb), GFP_KERNEL,
			       cpu_to_node(c->cpu));
	if (!rq->skb) {
		err = -ENOMEM;
		goto err_rq_wq_destroy;
	}

	rq->wqe_sz = (priv->params.lro_en) ? priv->params.lro_wqe_sz :
					     MLX5E_SW2HW_MTU(priv->netdev->mtu);
	rq->wqe_sz = SKB_DATA_ALIGN(rq->wqe_sz + MLX5E_NET_IP_ALIGN);

	for (i = 0; i < wq_sz; i++) {
		struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(&rq->wq, i);
		u32 byte_count = rq->wqe_sz - MLX5E_NET_IP_ALIGN;

		wqe->data.lkey       = c->mkey_be;
		wqe->data.byte_count =
			cpu_to_be32(byte_count | MLX5_HW_START_PADDING);
	}

	rq->pdev    = c->pdev;
	rq->netdev  = c->netdev;
	rq->channel = c;
	rq->ix      = c->ix;

	return 0;

err_rq_wq_destroy:
	mlx5_wq_destroy(&rq->wq_ctrl);

	return err;
}