[dpdk-dev] [PATCH v4 07/14] net/mlx5: split Rx queue into shareable and private

[Xueming Li <xuemingl@nvidia.com>]

To prepare shared Rx queue, splits RxQ data into shareable and private.
Struct mlx5_rxq_priv is per queue data.
Struct mlx5_rxq_ctrl is shared queue resources and data.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Acked-by: Slava Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/mlx5.c        |  4 +++
 drivers/net/mlx5/mlx5.h        |  5 ++-
 drivers/net/mlx5/mlx5_ethdev.c | 10 ++++++
 drivers/net/mlx5/mlx5_rx.h     | 17 +++++++--
 drivers/net/mlx5/mlx5_rxq.c    | 66 ++++++++++++++++++++++++++++------
 5 files changed, 88 insertions(+), 14 deletions(-)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index dc15688f216..374cc9757aa 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1700,6 +1700,10 @@ mlx5_dev_close(struct rte_eth_dev *dev)
 		mlx5_free(dev->intr_handle);
 		dev->intr_handle = NULL;
 	}
+	if (priv->rxq_privs != NULL) {
+		mlx5_free(priv->rxq_privs);
+		priv->rxq_privs = NULL;
+	}
 	if (priv->txqs != NULL) {
 		/* XXX race condition if mlx5_tx_burst() is still running. */
 		rte_delay_us_sleep(1000);
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 74af88ec194..4e99fe7d068 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -1345,6 +1345,8 @@ enum mlx5_txq_modify_type {
 	MLX5_TXQ_MOD_ERR2RDY, /* modify state from error to ready. */
 };
 
+struct mlx5_rxq_priv;
+
 /* HW objects operations structure. */
 struct mlx5_obj_ops {
 	int (*rxq_obj_modify_vlan_strip)(struct mlx5_rxq_obj *rxq_obj, int on);
@@ -1408,7 +1410,8 @@ struct mlx5_priv {
 	/* RX/TX queues. */
 	unsigned int rxqs_n; /* RX queues array size. */
 	unsigned int txqs_n; /* TX queues array size. */
-	struct mlx5_rxq_data *(*rxqs)[]; /* RX queues. */
+	struct mlx5_rxq_priv *(*rxq_privs)[]; /* RX queue non-shared data. */
+	struct mlx5_rxq_data *(*rxqs)[]; /* (Shared) RX queues. */
 	struct mlx5_txq_data *(*txqs)[]; /* TX queues. */
 	struct rte_mempool *mprq_mp; /* Mempool for Multi-Packet RQ. */
 	struct rte_eth_rss_conf rss_conf; /* RSS configuration. */
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 81fa8845bb5..cde505955df 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -104,6 +104,16 @@ mlx5_dev_configure(struct rte_eth_dev *dev)
 	       MLX5_RSS_HASH_KEY_LEN);
 	priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 	priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
+	priv->rxq_privs = mlx5_realloc(priv->rxq_privs,
+				       MLX5_MEM_RTE | MLX5_MEM_ZERO,
+				       sizeof(void *) * rxqs_n, 0,
+				       SOCKET_ID_ANY);
+	if (priv->rxq_privs == NULL) {
+		DRV_LOG(ERR, "port %u cannot allocate rxq private data",
+			dev->data->port_id);
+		rte_errno = ENOMEM;
+		return -rte_errno;
+	}
 	priv->rxqs = (void *)dev->data->rx_queues;
 	priv->txqs = (void *)dev->data->tx_queues;
 	if (txqs_n != priv->txqs_n) {
diff --git a/drivers/net/mlx5/mlx5_rx.h b/drivers/net/mlx5/mlx5_rx.h
index 69b1263339e..fa24f5cdf3a 100644
--- a/drivers/net/mlx5/mlx5_rx.h
+++ b/drivers/net/mlx5/mlx5_rx.h
@@ -150,10 +150,14 @@ struct mlx5_rxq_ctrl {
 	struct mlx5_rxq_data rxq; /* Data path structure. */
 	LIST_ENTRY(mlx5_rxq_ctrl) next; /* Pointer to the next element. */
 	uint32_t refcnt; /* Reference counter. */
+	LIST_HEAD(priv, mlx5_rxq_priv) owners; /* Owner rxq list. */
 	struct mlx5_rxq_obj *obj; /* Verbs/DevX elements. */
+	struct mlx5_dev_ctx_shared *sh; /* Shared context. */
 	struct mlx5_priv *priv; /* Back pointer to private data. */
 	enum mlx5_rxq_type type; /* Rxq type. */
 	unsigned int socket; /* CPU socket ID for allocations. */
+	uint32_t share_group; /* Group ID of shared RXQ. */
+	uint16_t share_qid; /* Shared RxQ ID in group. */
 	unsigned int irq:1; /* Whether IRQ is enabled. */
 	uint32_t flow_mark_n; /* Number of Mark/Flag flows using this Queue. */
 	uint32_t flow_tunnels_n[MLX5_FLOW_TUNNEL]; /* Tunnels counters. */
@@ -163,6 +167,14 @@ struct mlx5_rxq_ctrl {
 	uint32_t hairpin_status; /* Hairpin binding status. */
 };
 
+/* RX queue private data. */
+struct mlx5_rxq_priv {
+	uint16_t idx; /* Queue index. */
+	struct mlx5_rxq_ctrl *ctrl; /* Shared Rx Queue. */
+	LIST_ENTRY(mlx5_rxq_priv) owner_entry; /* Entry in shared rxq_ctrl. */
+	struct mlx5_priv *priv; /* Back pointer to private data. */
+};
+
 /* mlx5_rxq.c */
 
 extern uint8_t rss_hash_default_key[];
@@ -186,13 +198,14 @@ void mlx5_rx_intr_vec_disable(struct rte_eth_dev *dev);
 int mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 int mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 int mlx5_rxq_obj_verify(struct rte_eth_dev *dev);
-struct mlx5_rxq_ctrl *mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx,
+struct mlx5_rxq_ctrl *mlx5_rxq_new(struct rte_eth_dev *dev,
+				   struct mlx5_rxq_priv *rxq,
 				   uint16_t desc, unsigned int socket,
 				   const struct rte_eth_rxconf *conf,
 				   const struct rte_eth_rxseg_split *rx_seg,
 				   uint16_t n_seg);
 struct mlx5_rxq_ctrl *mlx5_rxq_hairpin_new
-	(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
+	(struct rte_eth_dev *dev, struct mlx5_rxq_priv *rxq, uint16_t desc,
 	 const struct rte_eth_hairpin_conf *hairpin_conf);
 struct mlx5_rxq_ctrl *mlx5_rxq_get(struct rte_eth_dev *dev, uint16_t idx);
 int mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx);
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index b2e4389ad60..00df245a5c6 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -674,6 +674,7 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 		    struct rte_mempool *mp)
 {
 	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_rxq_priv *rxq;
 	struct mlx5_rxq_ctrl *rxq_ctrl;
 	struct rte_eth_rxseg_split *rx_seg =
 				(struct rte_eth_rxseg_split *)conf->rx_seg;
@@ -708,10 +709,23 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 	res = mlx5_rx_queue_pre_setup(dev, idx, &desc);
 	if (res)
 		return res;
-	rxq_ctrl = mlx5_rxq_new(dev, idx, desc, socket, conf, rx_seg, n_seg);
+	rxq = mlx5_malloc(MLX5_MEM_RTE | MLX5_MEM_ZERO, sizeof(*rxq), 0,
+			  SOCKET_ID_ANY);
+	if (!rxq) {
+		DRV_LOG(ERR, "port %u unable to allocate rx queue index %u private data",
+			dev->data->port_id, idx);
+		rte_errno = ENOMEM;
+		return -rte_errno;
+	}
+	rxq->priv = priv;
+	rxq->idx = idx;
+	(*priv->rxq_privs)[idx] = rxq;
+	rxq_ctrl = mlx5_rxq_new(dev, rxq, desc, socket, conf, rx_seg, n_seg);
 	if (!rxq_ctrl) {
-		DRV_LOG(ERR, "port %u unable to allocate queue index %u",
+		DRV_LOG(ERR, "port %u unable to allocate rx queue index %u",
 			dev->data->port_id, idx);
+		mlx5_free(rxq);
+		(*priv->rxq_privs)[idx] = NULL;
 		rte_errno = ENOMEM;
 		return -rte_errno;
 	}
@@ -741,6 +755,7 @@ mlx5_rx_hairpin_queue_setup(struct rte_eth_dev *dev, uint16_t idx,
 			    const struct rte_eth_hairpin_conf *hairpin_conf)
 {
 	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_rxq_priv *rxq;
 	struct mlx5_rxq_ctrl *rxq_ctrl;
 	int res;
 
@@ -776,14 +791,27 @@ mlx5_rx_hairpin_queue_setup(struct rte_eth_dev *dev, uint16_t idx,
 			return -rte_errno;
 		}
 	}
-	rxq_ctrl = mlx5_rxq_hairpin_new(dev, idx, desc, hairpin_conf);
+	rxq = mlx5_malloc(MLX5_MEM_RTE | MLX5_MEM_ZERO, sizeof(*rxq), 0,
+			  SOCKET_ID_ANY);
+	if (!rxq) {
+		DRV_LOG(ERR, "port %u unable to allocate hairpin rx queue index %u private data",
+			dev->data->port_id, idx);
+		rte_errno = ENOMEM;
+		return -rte_errno;
+	}
+	rxq->priv = priv;
+	rxq->idx = idx;
+	(*priv->rxq_privs)[idx] = rxq;
+	rxq_ctrl = mlx5_rxq_hairpin_new(dev, rxq, desc, hairpin_conf);
 	if (!rxq_ctrl) {
-		DRV_LOG(ERR, "port %u unable to allocate queue index %u",
+		DRV_LOG(ERR, "port %u unable to allocate hairpin queue index %u",
 			dev->data->port_id, idx);
+		mlx5_free(rxq);
+		(*priv->rxq_privs)[idx] = NULL;
 		rte_errno = ENOMEM;
 		return -rte_errno;
 	}
-	DRV_LOG(DEBUG, "port %u adding Rx queue %u to list",
+	DRV_LOG(DEBUG, "port %u adding hairpin Rx queue %u to list",
 		dev->data->port_id, idx);
 	(*priv->rxqs)[idx] = &rxq_ctrl->rxq;
 	return 0;
@@ -1319,8 +1347,8 @@ mlx5_max_lro_msg_size_adjust(struct rte_eth_dev *dev, uint16_t idx,
  *
  * @param dev
  *   Pointer to Ethernet device.
- * @param idx
- *   RX queue index.
+ * @param rxq
+ *   RX queue private data.
  * @param desc
  *   Number of descriptors to configure in queue.
  * @param socket
@@ -1330,10 +1358,12 @@ mlx5_max_lro_msg_size_adjust(struct rte_eth_dev *dev, uint16_t idx,
  *   A DPDK queue object on success, NULL otherwise and rte_errno is set.
  */
 struct mlx5_rxq_ctrl *
-mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
+mlx5_rxq_new(struct rte_eth_dev *dev, struct mlx5_rxq_priv *rxq,
+	     uint16_t desc,
 	     unsigned int socket, const struct rte_eth_rxconf *conf,
 	     const struct rte_eth_rxseg_split *rx_seg, uint16_t n_seg)
 {
+	uint16_t idx = rxq->idx;
 	struct mlx5_priv *priv = dev->data->dev_private;
 	struct mlx5_rxq_ctrl *tmpl;
 	unsigned int mb_len = rte_pktmbuf_data_room_size(rx_seg[0].mp);
@@ -1377,6 +1407,9 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 		rte_errno = ENOMEM;
 		return NULL;
 	}
+	LIST_INIT(&tmpl->owners);
+	rxq->ctrl = tmpl;
+	LIST_INSERT_HEAD(&tmpl->owners, rxq, owner_entry);
 	MLX5_ASSERT(n_seg && n_seg <= MLX5_MAX_RXQ_NSEG);
 	/*
 	 * Build the array of actual buffer offsets and lengths.
@@ -1610,6 +1643,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 	tmpl->rxq.rss_hash = !!priv->rss_conf.rss_hf &&
 		(!!(dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS));
 	tmpl->rxq.port_id = dev->data->port_id;
+	tmpl->sh = priv->sh;
 	tmpl->priv = priv;
 	tmpl->rxq.mp = rx_seg[0].mp;
 	tmpl->rxq.elts_n = log2above(desc);
@@ -1637,8 +1671,8 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
  *
  * @param dev
  *   Pointer to Ethernet device.
- * @param idx
- *   RX queue index.
+ * @param rxq
+ *   RX queue.
  * @param desc
  *   Number of descriptors to configure in queue.
  * @param hairpin_conf
@@ -1648,9 +1682,11 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
  *   A DPDK queue object on success, NULL otherwise and rte_errno is set.
  */
 struct mlx5_rxq_ctrl *
-mlx5_rxq_hairpin_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
+mlx5_rxq_hairpin_new(struct rte_eth_dev *dev, struct mlx5_rxq_priv *rxq,
+		     uint16_t desc,
 		     const struct rte_eth_hairpin_conf *hairpin_conf)
 {
+	uint16_t idx = rxq->idx;
 	struct mlx5_priv *priv = dev->data->dev_private;
 	struct mlx5_rxq_ctrl *tmpl;
 
@@ -1660,10 +1696,14 @@ mlx5_rxq_hairpin_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 		rte_errno = ENOMEM;
 		return NULL;
 	}
+	LIST_INIT(&tmpl->owners);
+	rxq->ctrl = tmpl;
+	LIST_INSERT_HEAD(&tmpl->owners, rxq, owner_entry);
 	tmpl->type = MLX5_RXQ_TYPE_HAIRPIN;
 	tmpl->socket = SOCKET_ID_ANY;
 	tmpl->rxq.rss_hash = 0;
 	tmpl->rxq.port_id = dev->data->port_id;
+	tmpl->sh = priv->sh;
 	tmpl->priv = priv;
 	tmpl->rxq.mp = NULL;
 	tmpl->rxq.elts_n = log2above(desc);
@@ -1717,6 +1757,7 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
 {
 	struct mlx5_priv *priv = dev->data->dev_private;
 	struct mlx5_rxq_ctrl *rxq_ctrl;
+	struct mlx5_rxq_priv *rxq = (*priv->rxq_privs)[idx];
 
 	if (priv->rxqs == NULL || (*priv->rxqs)[idx] == NULL)
 		return 0;
@@ -1736,9 +1777,12 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
 	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);
+		LIST_REMOVE(rxq, owner_entry);
 		LIST_REMOVE(rxq_ctrl, next);
 		mlx5_free(rxq_ctrl);
 		(*priv->rxqs)[idx] = NULL;
+		mlx5_free(rxq);
+		(*priv->rxq_privs)[idx] = NULL;
 	}
 	return 0;
 }
-- 
2.33.0