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authorYongseok Koh <yskoh@mellanox.com>2018-07-23 13:57:04 -0700
committerThomas Monjalon <thomas@monjalon.net>2018-07-26 14:05:52 +0200
commit24f653a7e8bff5f500894a07771dd6718966e9be (patch)
treef0aa828c335b0f1ab3a305149fa8fc09fda529c8 /drivers/net/mlx5/mlx5_trigger.c
parentc20d4a70caa5c64520addae5f2e867f911b3aa18 (diff)
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net/mlx5: fix queue rollback when starting device
mlx5_rxq_start() and mlx5_rxq_stop() must be strictly paired because internal reference counter is increased or decreased inside. Also, mlx5_rxq_get() must be paired with mlx5_rxq_release(). Fixes: 7d6bf6b866b8 ("net/mlx5: add Multi-Packet Rx support") Fixes: a1366b1a2be3 ("net/mlx5: add reference counter on DPDK Rx queues") Fixes: 6e78005a9b30 ("net/mlx5: add reference counter on DPDK Tx queues") Cc: stable@dpdk.org Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Diffstat (limited to 'drivers/net/mlx5/mlx5_trigger.c')
-rw-r--r--drivers/net/mlx5/mlx5_trigger.c33
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c
index d02a626..e2a9bb7 100644
--- a/drivers/net/mlx5/mlx5_trigger.c
+++ b/drivers/net/mlx5/mlx5_trigger.c
@@ -46,7 +46,6 @@ mlx5_txq_start(struct rte_eth_dev *dev)
unsigned int i;
int ret;
- /* Add memory regions to Tx queues. */
for (i = 0; i != priv->txqs_n; ++i) {
struct mlx5_txq_ctrl *txq_ctrl = mlx5_txq_get(dev, i);
@@ -60,12 +59,17 @@ mlx5_txq_start(struct rte_eth_dev *dev)
}
}
ret = mlx5_tx_uar_remap(dev, priv->ctx->cmd_fd);
- if (ret)
+ if (ret) {
+ /* Adjust index for rollback. */
+ i = priv->txqs_n - 1;
goto error;
+ }
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
- mlx5_txq_stop(dev);
+ do {
+ mlx5_txq_release(dev, i);
+ } while (i-- != 0);
rte_errno = ret; /* Restore rte_errno. */
return -rte_errno;
}
@@ -103,8 +107,10 @@ mlx5_rxq_start(struct rte_eth_dev *dev)
int ret = 0;
/* Allocate/reuse/resize mempool for Multi-Packet RQ. */
- if (mlx5_mprq_alloc_mp(dev))
- goto error;
+ if (mlx5_mprq_alloc_mp(dev)) {
+ /* Should not release Rx queues but return immediately. */
+ return -rte_errno;
+ }
for (i = 0; i != priv->rxqs_n; ++i) {
struct mlx5_rxq_ctrl *rxq_ctrl = mlx5_rxq_get(dev, i);
struct rte_mempool *mp;
@@ -130,7 +136,9 @@ mlx5_rxq_start(struct rte_eth_dev *dev)
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
- mlx5_rxq_stop(dev);
+ do {
+ mlx5_rxq_release(dev, i);
+ } while (i-- != 0);
rte_errno = ret; /* Restore rte_errno. */
return -rte_errno;
}
@@ -152,21 +160,21 @@ mlx5_dev_start(struct rte_eth_dev *dev)
struct priv *priv = dev->data->dev_private;
int ret;
- dev->data->dev_started = 1;
- DRV_LOG(DEBUG, "port %u allocating and configuring hash Rx queues",
- dev->data->port_id);
+ DRV_LOG(DEBUG, "port %u starting device", dev->data->port_id);
ret = mlx5_txq_start(dev);
if (ret) {
DRV_LOG(ERR, "port %u Tx queue allocation failed: %s",
dev->data->port_id, strerror(rte_errno));
- goto error;
+ return -rte_errno;
}
ret = mlx5_rxq_start(dev);
if (ret) {
DRV_LOG(ERR, "port %u Rx queue allocation failed: %s",
dev->data->port_id, strerror(rte_errno));
- goto error;
+ mlx5_txq_stop(dev);
+ return -rte_errno;
}
+ dev->data->dev_started = 1;
ret = mlx5_rx_intr_vec_enable(dev);
if (ret) {
DRV_LOG(ERR, "port %u Rx interrupt vector creation failed",
@@ -221,8 +229,7 @@ mlx5_dev_stop(struct rte_eth_dev *dev)
dev->tx_pkt_burst = removed_tx_burst;
rte_wmb();
usleep(1000 * priv->rxqs_n);
- DRV_LOG(DEBUG, "port %u cleaning up and destroying hash Rx queues",
- dev->data->port_id);
+ DRV_LOG(DEBUG, "port %u stopping device", dev->data->port_id);
mlx5_flow_stop(dev, &priv->flows);
mlx5_traffic_disable(dev);
mlx5_rx_intr_vec_disable(dev);