+/**
+ * Create the Rx queue Verbs/DevX object.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ * @param idx
+ * Queue index in DPDK Rx queue array
+ * @param type
+ * Type of Rx queue object to create.
+ *
+ * @return
+ * The Verbs/DevX object initialised, NULL otherwise and rte_errno is set.
+ */
+struct mlx5_rxq_obj *
+mlx5_rxq_obj_new(struct rte_eth_dev *dev, uint16_t idx,
+ enum mlx5_rxq_obj_type type)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
+ struct mlx5_rxq_ctrl *rxq_ctrl =
+ container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
+ struct ibv_wq_attr mod;
+ unsigned int cqe_n;
+ unsigned int wqe_n = 1 << rxq_data->elts_n;
+ struct mlx5_rxq_obj *tmpl = NULL;
+ struct mlx5dv_cq cq_info;
+ struct mlx5dv_rwq rwq;
+ int ret = 0;
+ struct mlx5dv_obj obj;
+
+ MLX5_ASSERT(rxq_data);
+ MLX5_ASSERT(!rxq_ctrl->obj);
+ if (type == MLX5_RXQ_OBJ_TYPE_DEVX_HAIRPIN)
+ return mlx5_rxq_obj_hairpin_new(dev, idx);
+ priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_RX_QUEUE;
+ priv->verbs_alloc_ctx.obj = rxq_ctrl;
+ tmpl = mlx5_malloc(MLX5_MEM_RTE | MLX5_MEM_ZERO, sizeof(*tmpl), 0,
+ rxq_ctrl->socket);
+ if (!tmpl) {
+ DRV_LOG(ERR,
+ "port %u Rx queue %u cannot allocate resources",
+ dev->data->port_id, rxq_data->idx);
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ tmpl->type = type;
+ tmpl->rxq_ctrl = rxq_ctrl;
+ if (rxq_ctrl->irq) {
+ if (tmpl->type == MLX5_RXQ_OBJ_TYPE_IBV) {
+ tmpl->ibv_channel =
+ mlx5_glue->create_comp_channel(priv->sh->ctx);
+ if (!tmpl->ibv_channel) {
+ DRV_LOG(ERR, "port %u: comp channel creation "
+ "failure", dev->data->port_id);
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ tmpl->fd = tmpl->ibv_channel->fd;
+ } else if (tmpl->type == MLX5_RXQ_OBJ_TYPE_DEVX_RQ) {
+ int devx_ev_flag =
+ MLX5DV_DEVX_CREATE_EVENT_CHANNEL_FLAGS_OMIT_EV_DATA;
+
+ tmpl->devx_channel =
+ mlx5_glue->devx_create_event_channel
+ (priv->sh->ctx,
+ devx_ev_flag);
+ if (!tmpl->devx_channel) {
+ rte_errno = errno;
+ DRV_LOG(ERR,
+ "Failed to create event channel %d.",
+ rte_errno);
+ goto error;
+ }
+ tmpl->fd = tmpl->devx_channel->fd;
+ }
+ }
+ if (mlx5_rxq_mprq_enabled(rxq_data))
+ cqe_n = wqe_n * (1 << rxq_data->strd_num_n) - 1;
+ else
+ cqe_n = wqe_n - 1;
+ DRV_LOG(DEBUG, "port %u device_attr.max_qp_wr is %d",
+ dev->data->port_id, priv->sh->device_attr.max_qp_wr);
+ DRV_LOG(DEBUG, "port %u device_attr.max_sge is %d",
+ dev->data->port_id, priv->sh->device_attr.max_sge);
+ if (tmpl->type == MLX5_RXQ_OBJ_TYPE_IBV) {
+ /* Create CQ using Verbs API. */
+ tmpl->ibv_cq = mlx5_ibv_cq_new(dev, priv, rxq_data, cqe_n,
+ tmpl);
+ if (!tmpl->ibv_cq) {
+ DRV_LOG(ERR, "port %u Rx queue %u CQ creation failure",
+ dev->data->port_id, idx);
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ obj.cq.in = tmpl->ibv_cq;
+ obj.cq.out = &cq_info;
+ ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_CQ);
+ if (ret) {
+ rte_errno = ret;
+ goto error;
+ }
+ if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) {
+ DRV_LOG(ERR,
+ "port %u wrong MLX5_CQE_SIZE environment "
+ "variable value: it should be set to %u",
+ dev->data->port_id, RTE_CACHE_LINE_SIZE);
+ rte_errno = EINVAL;
+ goto error;
+ }
+ /* Fill the rings. */
+ rxq_data->cqe_n = log2above(cq_info.cqe_cnt);
+ rxq_data->cq_db = cq_info.dbrec;
+ rxq_data->cqes =
+ (volatile struct mlx5_cqe (*)[])(uintptr_t)cq_info.buf;
+ rxq_data->cq_uar = cq_info.cq_uar;
+ rxq_data->cqn = cq_info.cqn;
+ /* Create WQ (RQ) using Verbs API. */
+ tmpl->wq = mlx5_ibv_wq_new(dev, priv, rxq_data, idx, wqe_n,
+ tmpl);
+ if (!tmpl->wq) {
+ DRV_LOG(ERR, "port %u Rx queue %u WQ creation failure",
+ dev->data->port_id, idx);
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ /* Change queue state to ready. */
+ mod = (struct ibv_wq_attr){
+ .attr_mask = IBV_WQ_ATTR_STATE,
+ .wq_state = IBV_WQS_RDY,
+ };
+ ret = mlx5_glue->modify_wq(tmpl->wq, &mod);
+ if (ret) {
+ DRV_LOG(ERR,
+ "port %u Rx queue %u WQ state to IBV_WQS_RDY"
+ " failed", dev->data->port_id, idx);
+ rte_errno = ret;
+ goto error;
+ }
+ obj.rwq.in = tmpl->wq;
+ obj.rwq.out = &rwq;
+ ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_RWQ);
+ if (ret) {
+ rte_errno = ret;
+ goto error;
+ }
+ rxq_data->wqes = rwq.buf;
+ rxq_data->rq_db = rwq.dbrec;
+ } else if (tmpl->type == MLX5_RXQ_OBJ_TYPE_DEVX_RQ) {
+ struct mlx5_devx_modify_rq_attr rq_attr = { 0 };
+ struct mlx5_devx_dbr_page *dbr_page;
+ int64_t dbr_offset;
+
+ /* Allocate CQ door-bell. */
+ dbr_offset = mlx5_get_dbr(priv->sh->ctx, &priv->dbrpgs,
+ &dbr_page);
+ if (dbr_offset < 0) {
+ DRV_LOG(ERR, "Failed to allocate CQ door-bell.");
+ goto error;
+ }
+ rxq_ctrl->cq_dbr_offset = dbr_offset;
+ rxq_ctrl->cq_dbr_umem_id = mlx5_os_get_umem_id(dbr_page->umem);
+ rxq_ctrl->cq_dbr_umem_id_valid = 1;
+ rxq_data->cq_db =
+ (uint32_t *)((uintptr_t)dbr_page->dbrs +
+ (uintptr_t)rxq_ctrl->cq_dbr_offset);
+ rxq_data->cq_uar = priv->sh->devx_rx_uar->base_addr;
+ /* Create CQ using DevX API. */
+ tmpl->devx_cq = mlx5_devx_cq_new(dev, cqe_n, idx, tmpl);
+ if (!tmpl->devx_cq) {
+ DRV_LOG(ERR, "Failed to create CQ.");
+ goto error;