New upstream version 17.11.3

Change-Id: I2b901aaf362a2b94195665cc890d824b2c3a620e
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 101 insertions, 96 deletions

diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 2776dc70..a50c5208 100644
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -55,15 +55,12 @@ struct mlx5_check_mempool_data {
 
 /* Called by mlx5_check_mempool() when iterating the memory chunks. */
 static void
-mlx5_check_mempool_cb(struct rte_mempool *mp,
+mlx5_check_mempool_cb(struct rte_mempool *mp __rte_unused,
 		      void *opaque, struct rte_mempool_memhdr *memhdr,
-		      unsigned int mem_idx)
+		      unsigned int mem_idx __rte_unused)
 {
 	struct mlx5_check_mempool_data *data = opaque;
 
-	(void)mp;
-	(void)mem_idx;
-
 	/* It already failed, skip the next chunks. */
 	if (data->ret != 0)
 		return;
@@ -98,8 +95,9 @@ mlx5_check_mempool_cb(struct rte_mempool *mp,
  * @return
  *   0 on success (mempool is virtually contiguous), -1 on error.
  */
-static int mlx5_check_mempool(struct rte_mempool *mp, uintptr_t *start,
-	uintptr_t *end)
+static int
+mlx5_check_mempool(struct rte_mempool *mp, uintptr_t *start,
+		   uintptr_t *end)
 {
 	struct mlx5_check_mempool_data data;
 
@@ -107,7 +105,6 @@ static int mlx5_check_mempool(struct rte_mempool *mp, uintptr_t *start,
 	rte_mempool_mem_iter(mp, mlx5_check_mempool_cb, &data);
 	*start = (uintptr_t)data.start;
 	*end = (uintptr_t)data.end;
-
 	return data.ret;
 }
 
@@ -115,10 +112,6 @@ static int mlx5_check_mempool(struct rte_mempool *mp, uintptr_t *start,
  * Register a Memory Region (MR) <-> Memory Pool (MP) association in
  * txq->mp2mr[]. If mp2mr[] is full, remove an entry first.
  *
- * This function should only be called by txq_mp2mr().
- *
- * @param priv
- *   Pointer to private structure.
  * @param txq
  *   Pointer to TX queue structure.
  * @param[in] mp
@@ -127,71 +120,63 @@ static int mlx5_check_mempool(struct rte_mempool *mp, uintptr_t *start,
  *   Index of the next available entry.
  *
  * @return
- *   mr on success, NULL on failure.
+ *   mr on success, NULL on failure and rte_errno is set.
  */
-struct mlx5_mr*
-priv_txq_mp2mr_reg(struct priv *priv, struct mlx5_txq_data *txq,
-		   struct rte_mempool *mp, unsigned int idx)
+struct mlx5_mr *
+mlx5_txq_mp2mr_reg(struct mlx5_txq_data *txq, struct rte_mempool *mp,
+		   unsigned int idx)
 {
 	struct mlx5_txq_ctrl *txq_ctrl =
 		container_of(txq, struct mlx5_txq_ctrl, txq);
+	struct rte_eth_dev *dev;
 	struct mlx5_mr *mr;
 
+	rte_spinlock_lock(&txq_ctrl->priv->mr_lock);
 	/* Add a new entry, register MR first. */
-	DEBUG("%p: discovered new memory pool \"%s\" (%p)",
-	      (void *)txq_ctrl, mp->name, (void *)mp);
-	mr = priv_mr_get(priv, mp);
-	if (mr == NULL)
-		mr = priv_mr_new(priv, mp);
+	DRV_LOG(DEBUG, "port %u discovered new memory pool \"%s\" (%p)",
+		PORT_ID(txq_ctrl->priv), mp->name, (void *)mp);
+	dev = ETH_DEV(txq_ctrl->priv);
+	mr = mlx5_mr_get(dev, mp);
+	if (mr == NULL) {
+		if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+			DRV_LOG(DEBUG,
+				"port %u using unregistered mempool 0x%p(%s)"
+				" in secondary process, please create mempool"
+				" before rte_eth_dev_start()",
+				PORT_ID(txq_ctrl->priv), (void *)mp, mp->name);
+			rte_spinlock_unlock(&txq_ctrl->priv->mr_lock);
+			rte_errno = ENOTSUP;
+			return NULL;
+		}
+		mr = mlx5_mr_new(dev, mp);
+	}
 	if (unlikely(mr == NULL)) {
-		DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
-		      (void *)txq_ctrl);
+		DRV_LOG(DEBUG,
+			"port %u unable to configure memory region,"
+			" ibv_reg_mr() failed.",
+			PORT_ID(txq_ctrl->priv));
+		rte_spinlock_unlock(&txq_ctrl->priv->mr_lock);
 		return NULL;
 	}
 	if (unlikely(idx == RTE_DIM(txq->mp2mr))) {
 		/* Table is full, remove oldest entry. */
-		DEBUG("%p: MR <-> MP table full, dropping oldest entry.",
-		      (void *)txq_ctrl);
+		DRV_LOG(DEBUG,
+			"port %u memory region <-> memory pool table full, "
+			" dropping oldest entry",
+			PORT_ID(txq_ctrl->priv));
 		--idx;
-		priv_mr_release(priv, txq->mp2mr[0]);
+		mlx5_mr_release(txq->mp2mr[0]);
 		memmove(&txq->mp2mr[0], &txq->mp2mr[1],
 			(sizeof(txq->mp2mr) - sizeof(txq->mp2mr[0])));
 	}
 	/* Store the new entry. */
 	txq_ctrl->txq.mp2mr[idx] = mr;
-	DEBUG("%p: new MR lkey for MP \"%s\" (%p): 0x%08" PRIu32,
-	      (void *)txq_ctrl, mp->name, (void *)mp,
-	      txq_ctrl->txq.mp2mr[idx]->lkey);
-	return mr;
-}
-
-/**
- * Register a Memory Region (MR) <-> Memory Pool (MP) association in
- * txq->mp2mr[]. If mp2mr[] is full, remove an entry first.
- *
- * This function should only be called by txq_mp2mr().
- *
- * @param txq
- *   Pointer to TX queue structure.
- * @param[in] mp
- *   Memory Pool for which a Memory Region lkey must be returned.
- * @param idx
- *   Index of the next available entry.
- *
- * @return
- *   mr on success, NULL on failure.
- */
-struct mlx5_mr*
-mlx5_txq_mp2mr_reg(struct mlx5_txq_data *txq, struct rte_mempool *mp,
-		   unsigned int idx)
-{
-	struct mlx5_txq_ctrl *txq_ctrl =
-		container_of(txq, struct mlx5_txq_ctrl, txq);
-	struct mlx5_mr *mr;
-
-	priv_lock(txq_ctrl->priv);
-	mr = priv_txq_mp2mr_reg(txq_ctrl->priv, txq, mp, idx);
-	priv_unlock(txq_ctrl->priv);
+	DRV_LOG(DEBUG,
+		"port %u new memory region lkey for MP \"%s\" (%p): 0x%08"
+		PRIu32,
+		PORT_ID(txq_ctrl->priv), mp->name, (void *)mp,
+		txq_ctrl->txq.mp2mr[idx]->lkey);
+	rte_spinlock_unlock(&txq_ctrl->priv->mr_lock);
 	return mr;
 }
 
@@ -250,28 +235,33 @@ mlx5_mp2mr_iter(struct rte_mempool *mp, void *arg)
 	if (rte_mempool_obj_iter(mp, txq_mp2mr_mbuf_check, &data) == 0 ||
 			data.ret == -1)
 		return;
-	mr = priv_mr_get(priv, mp);
+	mr = mlx5_mr_get(ETH_DEV(priv), mp);
 	if (mr) {
-		priv_mr_release(priv, mr);
+		mlx5_mr_release(mr);
 		return;
 	}
-	priv_mr_new(priv, mp);
+	mr = mlx5_mr_new(ETH_DEV(priv), mp);
+	if (!mr)
+		DRV_LOG(ERR, "port %u cannot create memory region: %s",
+			PORT_ID(priv), strerror(rte_errno));
 }
 
 /**
  * Register a new memory region from the mempool and store it in the memory
  * region list.
  *
- * @param  priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param mp
  *   Pointer to the memory pool to register.
+ *
  * @return
- *   The memory region on success.
+ *   The memory region on success, NULL on failure and rte_errno is set.
  */
-struct mlx5_mr*
-priv_mr_new(struct priv *priv, struct rte_mempool *mp)
+struct mlx5_mr *
+mlx5_mr_new(struct rte_eth_dev *dev, struct rte_mempool *mp)
 {
+	struct priv *priv = dev->data->dev_private;
 	const struct rte_memseg *ms = rte_eal_get_physmem_layout();
 	uintptr_t start;
 	uintptr_t end;
@@ -280,17 +270,22 @@ priv_mr_new(struct priv *priv, struct rte_mempool *mp)
 
 	mr = rte_zmalloc_socket(__func__, sizeof(*mr), 0, mp->socket_id);
 	if (!mr) {
-		DEBUG("unable to configure MR, ibv_reg_mr() failed.");
+		DRV_LOG(DEBUG,
+			"port %u unable to configure memory region,"
+			" ibv_reg_mr() failed.",
+			dev->data->port_id);
+		rte_errno = ENOMEM;
 		return NULL;
 	}
 	if (mlx5_check_mempool(mp, &start, &end) != 0) {
-		ERROR("mempool %p: not virtually contiguous",
-		      (void *)mp);
+		DRV_LOG(ERR, "port %u mempool %p: not virtually contiguous",
+			dev->data->port_id, (void *)mp);
+		rte_errno = ENOMEM;
 		return NULL;
 	}
-	DEBUG("mempool %p area start=%p end=%p size=%zu",
-	      (void *)mp, (void *)start, (void *)end,
-	      (size_t)(end - start));
+	DRV_LOG(DEBUG, "port %u mempool %p area start=%p end=%p size=%zu",
+		dev->data->port_id, (void *)mp, (void *)start, (void *)end,
+		(size_t)(end - start));
 	/* Save original addresses for exact MR lookup. */
 	mr->start = start;
 	mr->end = end;
@@ -305,16 +300,22 @@ priv_mr_new(struct priv *priv, struct rte_mempool *mp)
 		if ((end > addr) && (end < addr + len))
 			end = RTE_ALIGN_CEIL(end, align);
 	}
-	DEBUG("mempool %p using start=%p end=%p size=%zu for MR",
-	      (void *)mp, (void *)start, (void *)end,
-	      (size_t)(end - start));
+	DRV_LOG(DEBUG,
+		"port %u mempool %p using start=%p end=%p size=%zu for memory"
+		" region",
+		dev->data->port_id, (void *)mp, (void *)start, (void *)end,
+		(size_t)(end - start));
 	mr->mr = ibv_reg_mr(priv->pd, (void *)start, end - start,
 			    IBV_ACCESS_LOCAL_WRITE);
+	if (!mr->mr) {
+		rte_errno = ENOMEM;
+		return NULL;
+	}
 	mr->mp = mp;
 	mr->lkey = rte_cpu_to_be_32(mr->mr->lkey);
 	rte_atomic32_inc(&mr->refcnt);
-	DEBUG("%p: new Memory Region %p refcnt: %d", (void *)priv,
-	      (void *)mr, rte_atomic32_read(&mr->refcnt));
+	DRV_LOG(DEBUG, "port %u new memory Region %p refcnt: %d",
+		dev->data->port_id, (void *)mr, rte_atomic32_read(&mr->refcnt));
 	LIST_INSERT_HEAD(&priv->mr, mr, next);
 	return mr;
 }
@@ -322,16 +323,18 @@ priv_mr_new(struct priv *priv, struct rte_mempool *mp)
 /**
  * Search the memory region object in the memory region list.
  *
- * @param  priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param mp
  *   Pointer to the memory pool to register.
+ *
  * @return
  *   The memory region on success.
  */
-struct mlx5_mr*
-priv_mr_get(struct priv *priv, struct rte_mempool *mp)
+struct mlx5_mr *
+mlx5_mr_get(struct rte_eth_dev *dev, struct rte_mempool *mp)
 {
+	struct priv *priv = dev->data->dev_private;
 	struct mlx5_mr *mr;
 
 	assert(mp);
@@ -340,8 +343,9 @@ priv_mr_get(struct priv *priv, struct rte_mempool *mp)
 	LIST_FOREACH(mr, &priv->mr, next) {
 		if (mr->mp == mp) {
 			rte_atomic32_inc(&mr->refcnt);
-			DEBUG("Memory Region %p refcnt: %d",
-			      (void *)mr, rte_atomic32_read(&mr->refcnt));
+			DRV_LOG(DEBUG, "port %u memory region %p refcnt: %d",
+				dev->data->port_id, (void *)mr,
+				rte_atomic32_read(&mr->refcnt));
 			return mr;
 		}
 	}
@@ -355,41 +359,42 @@ priv_mr_get(struct priv *priv, struct rte_mempool *mp)
  *   Pointer to memory region to release.
  *
  * @return
- *   0 on success, errno on failure.
+ *   1 while a reference on it exists, 0 when freed.
  */
 int
-priv_mr_release(struct priv *priv, struct mlx5_mr *mr)
+mlx5_mr_release(struct mlx5_mr *mr)
 {
-	(void)priv;
 	assert(mr);
-	DEBUG("Memory Region %p refcnt: %d",
-	      (void *)mr, rte_atomic32_read(&mr->refcnt));
+	DRV_LOG(DEBUG, "memory region %p refcnt: %d", (void *)mr,
+		rte_atomic32_read(&mr->refcnt));
 	if (rte_atomic32_dec_and_test(&mr->refcnt)) {
 		claim_zero(ibv_dereg_mr(mr->mr));
 		LIST_REMOVE(mr, next);
 		rte_free(mr);
 		return 0;
 	}
-	return EBUSY;
+	return 1;
 }
 
 /**
  * Verify the flow list is empty
  *
- * @param priv
- *  Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  *
- * @return the number of object not released.
+ * @return
+ *   The number of object not released.
  */
 int
-priv_mr_verify(struct priv *priv)
+mlx5_mr_verify(struct rte_eth_dev *dev)
 {
+	struct priv *priv = dev->data->dev_private;
 	int ret = 0;
 	struct mlx5_mr *mr;
 
 	LIST_FOREACH(mr, &priv->mr, next) {
-		DEBUG("%p: mr %p still referenced", (void *)priv,
-		      (void *)mr);
+		DRV_LOG(DEBUG, "port %u memory region %p still referenced",
+			dev->data->port_id, (void *)mr);
 		++ret;
 	}
 	return ret;