[v3,4/4] net/ixgbe: fix memzone leak when re-configure the RX/TX queues
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Commit Message
Normally when closing the device the queue memzone should be
freed. But the memzone will be not freed, when device setup
ops like:
rte_eth_bond_slave_remove
-->__eth_bond_slave_remove_lock_free
---->slave_remove
------>rte_eth_dev_internal_reset
-------->rte_eth_dev_rx_queue_config
---------->eth_dev_rx_queue_config
------------>ixgbe_dev_rx_queue_release
rte_eth_dev_close
-->ixgbe_dev_close
---->ixgbe_dev_free_queues
------>ixgbe_dev_rx_queue_release
(not been called due to nb_rx_queues and nb_tx_queues are 0)
And when queue number is changed to small size, the BIG memzone
queue index will be lost. This will lead to a memory leak. So we
should release the memzone when releasing queues.
Fixes: 460d1679586e ("drivers/net: delete HW rings while freeing queues")
Cc: stable@dpdk.org
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
---
drivers/net/ixgbe/ixgbe_rxtx.c | 6 ++++--
drivers/net/ixgbe/ixgbe_rxtx.h | 2 ++
2 files changed, 6 insertions(+), 2 deletions(-)
Comments
> -----Original Message-----
> From: Yunjian Wang <wangyunjian@huawei.com>
> Sent: Wednesday, September 22, 2021 21:30
> To: dev@dpdk.org
> Cc: Wang, Haiyue <haiyue.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; dingxiaoxiong@huawei.com; Yunjian Wang
> <wangyunjian@huawei.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH v3 4/4] net/ixgbe: fix memzone leak when re-configure the RX/TX queues
>
> Normally when closing the device the queue memzone should be
> freed. But the memzone will be not freed, when device setup
> ops like:
>
> rte_eth_bond_slave_remove
> -->__eth_bond_slave_remove_lock_free
> ---->slave_remove
> ------>rte_eth_dev_internal_reset
> -------->rte_eth_dev_rx_queue_config
> ---------->eth_dev_rx_queue_config
> ------------>ixgbe_dev_rx_queue_release
> rte_eth_dev_close
> -->ixgbe_dev_close
> ---->ixgbe_dev_free_queues
> ------>ixgbe_dev_rx_queue_release
> (not been called due to nb_rx_queues and nb_tx_queues are 0)
>
> And when queue number is changed to small size, the BIG memzone
> queue index will be lost. This will lead to a memory leak. So we
> should release the memzone when releasing queues.
>
> Fixes: 460d1679586e ("drivers/net: delete HW rings while freeing queues")
> Cc: stable@dpdk.org
>
> Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
> ---
> drivers/net/ixgbe/ixgbe_rxtx.c | 6 ++++--
> drivers/net/ixgbe/ixgbe_rxtx.h | 2 ++
> 2 files changed, 6 insertions(+), 2 deletions(-)
>
Acked-by: Haiyue Wang <haiyue.wang@intel.com>
> --
> 2.23.0
@@ -2482,6 +2482,7 @@ ixgbe_tx_queue_release(struct ixgbe_tx_queue *txq)
if (txq != NULL && txq->ops != NULL) {
txq->ops->release_mbufs(txq);
txq->ops->free_swring(txq);
+ rte_memzone_free(txq->mz);
rte_free(txq);
}
}
@@ -2763,6 +2764,7 @@ ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
return -ENOMEM;
}
+ txq->mz = tz;
txq->nb_tx_desc = nb_desc;
txq->tx_rs_thresh = tx_rs_thresh;
txq->tx_free_thresh = tx_free_thresh;
@@ -2887,6 +2889,7 @@ ixgbe_rx_queue_release(struct ixgbe_rx_queue *rxq)
ixgbe_rx_queue_release_mbufs(rxq);
rte_free(rxq->sw_ring);
rte_free(rxq->sw_sc_ring);
+ rte_memzone_free(rxq->mz);
rte_free(rxq);
}
}
@@ -3162,6 +3165,7 @@ ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
return -ENOMEM;
}
+ rxq->mz = rz;
/*
* Zero init all the descriptors in the ring.
*/
@@ -3433,14 +3437,12 @@ ixgbe_dev_free_queues(struct rte_eth_dev *dev)
for (i = 0; i < dev->data->nb_rx_queues; i++) {
ixgbe_dev_rx_queue_release(dev->data->rx_queues[i]);
dev->data->rx_queues[i] = NULL;
- rte_eth_dma_zone_free(dev, "rx_ring", i);
}
dev->data->nb_rx_queues = 0;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
ixgbe_dev_tx_queue_release(dev->data->tx_queues[i]);
dev->data->tx_queues[i] = NULL;
- rte_eth_dma_zone_free(dev, "tx_ring", i);
}
dev->data->nb_tx_queues = 0;
}
@@ -138,6 +138,7 @@ struct ixgbe_rx_queue {
struct rte_mbuf fake_mbuf;
/** hold packets to return to application */
struct rte_mbuf *rx_stage[RTE_PMD_IXGBE_RX_MAX_BURST*2];
+ const struct rte_memzone *mz;
};
/**
@@ -236,6 +237,7 @@ struct ixgbe_tx_queue {
uint8_t using_ipsec;
/**< indicates that IPsec TX feature is in use */
#endif
+ const struct rte_memzone *mz;
};
struct ixgbe_txq_ops {