net/mlx5: fix representor interrupts handler
[dpdk.git] / drivers / net / mlx5 / mlx5_rxq.c
index a61a2da..da7a8b3 100644 (file)
@@ -622,7 +622,7 @@ mlx5_rx_queue_start_primary(struct rte_eth_dev *dev, uint16_t idx)
        rte_io_wmb();
        *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
        rte_io_wmb();
-       /* Reset RQ consumer before moving queue ro READY state. */
+       /* Reset RQ consumer before moving queue to READY state. */
        *rxq->rq_db = rte_cpu_to_be_32(0);
        rte_io_wmb();
        ret = priv->obj_ops.rxq_obj_modify(rxq_ctrl->obj, MLX5_RXQ_MOD_RST2RDY);
@@ -902,6 +902,9 @@ mlx5_rx_intr_vec_enable(struct rte_eth_dev *dev)
        unsigned int count = 0;
        struct rte_intr_handle *intr_handle = dev->intr_handle;
 
+       /* Representor shares dev->intr_handle with PF. */
+       if (priv->representor)
+               return 0;
        if (!dev->data->dev_conf.intr_conf.rxq)
                return 0;
        mlx5_rx_intr_vec_disable(dev);
@@ -982,6 +985,9 @@ mlx5_rx_intr_vec_disable(struct rte_eth_dev *dev)
        unsigned int rxqs_n = priv->rxqs_n;
        unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID);
 
+       /* Representor shares dev->intr_handle with PF. */
+       if (priv->representor)
+               return;
        if (!dev->data->dev_conf.intr_conf.rxq)
                return;
        if (!intr_handle->intr_vec)
@@ -1506,7 +1512,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
                        dev->data->port_id, idx, mb_len, max_rx_pkt_len,
                        RTE_PKTMBUF_HEADROOM);
                rte_errno = ENOSPC;
-               return NULL;
+               goto error;
        }
        tmpl->type = MLX5_RXQ_TYPE_STANDARD;
        if (mlx5_mr_btree_init(&tmpl->rxq.mr_ctrl.cache_bh,
@@ -1784,8 +1790,10 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
                mlx5_free(rxq_ctrl->obj);
                rxq_ctrl->obj = NULL;
        }
-       if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
+       if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD) {
                rxq_free_elts(rxq_ctrl);
+               dev->data->rx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STOPPED;
+       }
        if (!__atomic_load_n(&rxq_ctrl->refcnt, __ATOMIC_RELAXED)) {
                if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
                        mlx5_mr_btree_free(&rxq_ctrl->rxq.mr_ctrl.cache_bh);
@@ -1992,6 +2000,50 @@ mlx5_ind_table_obj_verify(struct rte_eth_dev *dev)
        return ret;
 }
 
+/**
+ * Setup an indirection table structure fields.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param ind_table
+ *   Indirection table to modify.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_ind_table_obj_setup(struct rte_eth_dev *dev,
+                        struct mlx5_ind_table_obj *ind_tbl)
+{
+       struct mlx5_priv *priv = dev->data->dev_private;
+       uint32_t queues_n = ind_tbl->queues_n;
+       uint16_t *queues = ind_tbl->queues;
+       unsigned int i, j;
+       int ret = 0, err;
+       const unsigned int n = rte_is_power_of_2(queues_n) ?
+                              log2above(queues_n) :
+                              log2above(priv->config.ind_table_max_size);
+
+       for (i = 0; i != queues_n; ++i) {
+               if (!mlx5_rxq_get(dev, queues[i])) {
+                       ret = -rte_errno;
+                       goto error;
+               }
+       }
+       ret = priv->obj_ops.ind_table_new(dev, n, ind_tbl);
+       if (ret)
+               goto error;
+       __atomic_fetch_add(&ind_tbl->refcnt, 1, __ATOMIC_RELAXED);
+       return 0;
+error:
+       err = rte_errno;
+       for (j = 0; j < i; j++)
+               mlx5_rxq_release(dev, ind_tbl->queues[j]);
+       rte_errno = err;
+       DEBUG("Port %u cannot setup indirection table.", dev->data->port_id);
+       return ret;
+}
+
 /**
  * Create an indirection table.
  *
@@ -2013,10 +2065,6 @@ mlx5_ind_table_obj_new(struct rte_eth_dev *dev, const uint16_t *queues,
 {
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_ind_table_obj *ind_tbl;
-       const unsigned int n = rte_is_power_of_2(queues_n) ?
-                              log2above(queues_n) :
-                              log2above(priv->config.ind_table_max_size);
-       unsigned int i, j;
        int ret;
 
        ind_tbl = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*ind_tbl) +
@@ -2026,27 +2074,83 @@ mlx5_ind_table_obj_new(struct rte_eth_dev *dev, const uint16_t *queues,
                return NULL;
        }
        ind_tbl->queues_n = queues_n;
-       for (i = 0; i != queues_n; ++i) {
-               struct mlx5_rxq_ctrl *rxq = mlx5_rxq_get(dev, queues[i]);
-               if (!rxq)
-                       goto error;
-               ind_tbl->queues[i] = queues[i];
+       ind_tbl->queues = (uint16_t *)(ind_tbl + 1);
+       memcpy(ind_tbl->queues, queues, queues_n * sizeof(*queues));
+       ret = mlx5_ind_table_obj_setup(dev, ind_tbl);
+       if (ret < 0) {
+               mlx5_free(ind_tbl);
+               return NULL;
        }
-       ret = priv->obj_ops.ind_table_new(dev, n, ind_tbl);
-       if (ret < 0)
-               goto error;
-       __atomic_fetch_add(&ind_tbl->refcnt, 1, __ATOMIC_RELAXED);
        if (!standalone)
                LIST_INSERT_HEAD(&priv->ind_tbls, ind_tbl, next);
        return ind_tbl;
+}
+
+/**
+ * Modify an indirection table.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param ind_table
+ *   Indirection table to modify.
+ * @param queues
+ *   Queues replacement for the indirection table.
+ * @param queues_n
+ *   Number of queues in the array.
+ * @param standalone
+ *   Indirection table for Standalone queue.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_ind_table_obj_modify(struct rte_eth_dev *dev,
+                         struct mlx5_ind_table_obj *ind_tbl,
+                         uint16_t *queues, const uint32_t queues_n,
+                         bool standalone)
+{
+       struct mlx5_priv *priv = dev->data->dev_private;
+       unsigned int i, j;
+       int ret = 0, err;
+       const unsigned int n = rte_is_power_of_2(queues_n) ?
+                              log2above(queues_n) :
+                              log2above(priv->config.ind_table_max_size);
+
+       MLX5_ASSERT(standalone);
+       RTE_SET_USED(standalone);
+       if (__atomic_load_n(&ind_tbl->refcnt, __ATOMIC_RELAXED) > 1) {
+               /*
+                * Modification of indirection ntables having more than 1
+                * reference unsupported. Intended for standalone indirection
+                * tables only.
+                */
+               DEBUG("Port %u cannot modify indirection table (refcnt> 1).",
+                     dev->data->port_id);
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
+       for (i = 0; i != queues_n; ++i) {
+               if (!mlx5_rxq_get(dev, queues[i])) {
+                       ret = -rte_errno;
+                       goto error;
+               }
+       }
+       MLX5_ASSERT(priv->obj_ops.ind_table_modify);
+       ret = priv->obj_ops.ind_table_modify(dev, n, queues, queues_n, ind_tbl);
+       if (ret)
+               goto error;
+       for (j = 0; j < ind_tbl->queues_n; j++)
+               mlx5_rxq_release(dev, ind_tbl->queues[j]);
+       ind_tbl->queues_n = queues_n;
+       ind_tbl->queues = queues;
+       return 0;
 error:
-       ret = rte_errno;
+       err = rte_errno;
        for (j = 0; j < i; j++)
                mlx5_rxq_release(dev, ind_tbl->queues[j]);
-       rte_errno = ret;
-       mlx5_free(ind_tbl);
-       DEBUG("Port %u cannot create indirection table.", dev->data->port_id);
-       return NULL;
+       rte_errno = err;
+       DEBUG("Port %u cannot setup indirection table.", dev->data->port_id);
+       return ret;
 }
 
 /**
@@ -2134,6 +2238,14 @@ mlx5_hrxq_modify(struct rte_eth_dev *dev, uint32_t hrxq_idx,
                                            queues, queues_n)) {
                ind_tbl = hrxq->ind_table;
        } else {
+               if (hrxq->standalone) {
+                       /*
+                        * Replacement of indirection table unsupported for
+                        * stanalone hrxq objects (used by shared RSS).
+                        */
+                       rte_errno = ENOTSUP;
+                       return -rte_errno;
+               }
                ind_tbl = mlx5_ind_table_obj_get(dev, queues, queues_n);
                if (!ind_tbl)
                        ind_tbl = mlx5_ind_table_obj_new(dev, queues, queues_n,
@@ -2151,6 +2263,7 @@ mlx5_hrxq_modify(struct rte_eth_dev *dev, uint32_t hrxq_idx,
                goto error;
        }
        if (ind_tbl != hrxq->ind_table) {
+               MLX5_ASSERT(!hrxq->standalone);
                mlx5_ind_table_obj_release(dev, hrxq->ind_table,
                                           hrxq->standalone);
                hrxq->ind_table = ind_tbl;
@@ -2160,8 +2273,10 @@ mlx5_hrxq_modify(struct rte_eth_dev *dev, uint32_t hrxq_idx,
        return 0;
 error:
        err = rte_errno;
-       if (ind_tbl != hrxq->ind_table)
+       if (ind_tbl != hrxq->ind_table) {
+               MLX5_ASSERT(!hrxq->standalone);
                mlx5_ind_table_obj_release(dev, ind_tbl, hrxq->standalone);
+       }
        rte_errno = err;
        return -rte_errno;
 }
@@ -2175,7 +2290,10 @@ __mlx5_hrxq_remove(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq)
        mlx5_glue->destroy_flow_action(hrxq->action);
 #endif
        priv->obj_ops.hrxq_destroy(hrxq);
-       mlx5_ind_table_obj_release(dev, hrxq->ind_table, hrxq->standalone);
+       if (!hrxq->standalone) {
+               mlx5_ind_table_obj_release(dev, hrxq->ind_table,
+                                          hrxq->standalone);
+       }
        mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_HRXQ], hrxq->idx);
 }
 
@@ -2209,25 +2327,27 @@ __mlx5_hrxq_create(struct rte_eth_dev *dev,
        struct mlx5_priv *priv = dev->data->dev_private;
        const uint8_t *rss_key = rss_desc->key;
        uint32_t rss_key_len =  rss_desc->key_len;
+       bool standalone = !!rss_desc->shared_rss;
        const uint16_t *queues =
-               rss_desc->standalone ? rss_desc->const_q : rss_desc->queue;
+               standalone ? rss_desc->const_q : rss_desc->queue;
        uint32_t queues_n = rss_desc->queue_num;
        struct mlx5_hrxq *hrxq = NULL;
        uint32_t hrxq_idx = 0;
-       struct mlx5_ind_table_obj *ind_tbl;
+       struct mlx5_ind_table_obj *ind_tbl = rss_desc->ind_tbl;
        int ret;
 
        queues_n = rss_desc->hash_fields ? queues_n : 1;
-       ind_tbl = mlx5_ind_table_obj_get(dev, queues, queues_n);
+       if (!ind_tbl)
+               ind_tbl = mlx5_ind_table_obj_get(dev, queues, queues_n);
        if (!ind_tbl)
                ind_tbl = mlx5_ind_table_obj_new(dev, queues, queues_n,
-                                                rss_desc->standalone);
+                                                standalone);
        if (!ind_tbl)
                return NULL;
        hrxq = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_HRXQ], &hrxq_idx);
        if (!hrxq)
                goto error;
-       hrxq->standalone = rss_desc->standalone;
+       hrxq->standalone = standalone;
        hrxq->idx = hrxq_idx;
        hrxq->ind_table = ind_tbl;
        hrxq->rss_key_len = rss_key_len;
@@ -2238,7 +2358,8 @@ __mlx5_hrxq_create(struct rte_eth_dev *dev,
                goto error;
        return hrxq;
 error:
-       mlx5_ind_table_obj_release(dev, ind_tbl, rss_desc->standalone);
+       if (!rss_desc->ind_tbl)
+               mlx5_ind_table_obj_release(dev, ind_tbl, standalone);
        if (hrxq)
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_HRXQ], hrxq_idx);
        return NULL;
@@ -2292,7 +2413,7 @@ uint32_t mlx5_hrxq_get(struct rte_eth_dev *dev,
                .data = rss_desc,
        };
 
-       if (rss_desc->standalone) {
+       if (rss_desc->shared_rss) {
                hrxq = __mlx5_hrxq_create(dev, rss_desc);
        } else {
                entry = mlx5_cache_register(&priv->hrxqs, &ctx);
@@ -2320,6 +2441,8 @@ int mlx5_hrxq_release(struct rte_eth_dev *dev, uint32_t hrxq_idx)
        struct mlx5_hrxq *hrxq;
 
        hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ], hrxq_idx);
+       if (!hrxq)
+               return 0;
        if (!hrxq->standalone)
                return mlx5_cache_unregister(&priv->hrxqs, &hrxq->entry);
        __mlx5_hrxq_remove(dev, hrxq);
@@ -2342,11 +2465,8 @@ mlx5_drop_action_create(struct rte_eth_dev *dev)
        struct mlx5_hrxq *hrxq = NULL;
        int ret;
 
-       if (priv->drop_queue.hrxq) {
-               __atomic_fetch_add(&priv->drop_queue.hrxq->refcnt, 1,
-                                  __ATOMIC_RELAXED);
+       if (priv->drop_queue.hrxq)
                return priv->drop_queue.hrxq;
-       }
        hrxq = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*hrxq), 0, SOCKET_ID_ANY);
        if (!hrxq) {
                DRV_LOG(WARNING,
@@ -2365,7 +2485,6 @@ mlx5_drop_action_create(struct rte_eth_dev *dev)
        ret = priv->obj_ops.drop_action_create(dev);
        if (ret < 0)
                goto error;
-       __atomic_store_n(&hrxq->refcnt, 1, __ATOMIC_RELAXED);
        return hrxq;
 error:
        if (hrxq) {
@@ -2389,14 +2508,14 @@ mlx5_drop_action_destroy(struct rte_eth_dev *dev)
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_hrxq *hrxq = priv->drop_queue.hrxq;
 
-       if (__atomic_sub_fetch(&hrxq->refcnt, 1, __ATOMIC_RELAXED) == 0) {
-               priv->obj_ops.drop_action_destroy(dev);
-               mlx5_free(priv->drop_queue.rxq);
-               mlx5_free(hrxq->ind_table);
-               mlx5_free(hrxq);
-               priv->drop_queue.rxq = NULL;
-               priv->drop_queue.hrxq = NULL;
-       }
+       if (!priv->drop_queue.hrxq)
+               return;
+       priv->obj_ops.drop_action_destroy(dev);
+       mlx5_free(priv->drop_queue.rxq);
+       mlx5_free(hrxq->ind_table);
+       mlx5_free(hrxq);
+       priv->drop_queue.rxq = NULL;
+       priv->drop_queue.hrxq = NULL;
 }
 
 /**