[v3,1/4] net/e1000: 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
------------>em_rx_queue_release
rte_eth_dev_close
-->eth_em_close
---->em_dev_free_queues
------>em_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/e1000/em_rxtx.c | 8 ++++++--
drivers/net/e1000/igb_rxtx.c | 9 +++++++--
2 files changed, 13 insertions(+), 4 deletions(-)
Comments
> -----Original Message-----
> From: Yunjian Wang <wangyunjian@huawei.com>
> Sent: Wednesday, September 22, 2021 21:28
> 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 1/4] net/e1000: 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
> ------------>em_rx_queue_release
> rte_eth_dev_close
> -->eth_em_close
> ---->em_dev_free_queues
> ------>em_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/e1000/em_rxtx.c | 8 ++++++--
> drivers/net/e1000/igb_rxtx.c | 9 +++++++--
> 2 files changed, 13 insertions(+), 4 deletions(-)
>
Acked-by: Haiyue Wang <haiyue.wang@intel.com>
> --
> 2.23.0
@@ -104,6 +104,7 @@ struct em_rx_queue {
uint8_t hthresh; /**< Host threshold register. */
uint8_t wthresh; /**< Write-back threshold register. */
uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise. */
+ const struct rte_memzone *mz;
};
/**
@@ -173,6 +174,7 @@ struct em_tx_queue {
struct em_ctx_info ctx_cache;
/**< Hardware context history.*/
uint64_t offloads; /**< offloads of DEV_TX_OFFLOAD_* */
+ const struct rte_memzone *mz;
};
#if 1
@@ -1116,6 +1118,7 @@ em_tx_queue_release(struct em_tx_queue *txq)
if (txq != NULL) {
em_tx_queue_release_mbufs(txq);
rte_free(txq->sw_ring);
+ rte_memzone_free(txq->mz);
rte_free(txq);
}
}
@@ -1286,6 +1289,7 @@ eth_em_tx_queue_setup(struct rte_eth_dev *dev,
RTE_CACHE_LINE_SIZE)) == NULL)
return -ENOMEM;
+ txq->mz = tz;
/* Allocate software ring */
if ((txq->sw_ring = rte_zmalloc("txq->sw_ring",
sizeof(txq->sw_ring[0]) * nb_desc,
@@ -1338,6 +1342,7 @@ em_rx_queue_release(struct em_rx_queue *rxq)
if (rxq != NULL) {
em_rx_queue_release_mbufs(rxq);
rte_free(rxq->sw_ring);
+ rte_memzone_free(rxq->mz);
rte_free(rxq);
}
}
@@ -1452,6 +1457,7 @@ eth_em_rx_queue_setup(struct rte_eth_dev *dev,
RTE_CACHE_LINE_SIZE)) == NULL)
return -ENOMEM;
+ rxq->mz = rz;
/* Allocate software ring. */
if ((rxq->sw_ring = rte_zmalloc("rxq->sw_ring",
sizeof (rxq->sw_ring[0]) * nb_desc,
@@ -1611,14 +1617,12 @@ em_dev_free_queues(struct rte_eth_dev *dev)
for (i = 0; i < dev->data->nb_rx_queues; i++) {
eth_em_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++) {
eth_em_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;
}
@@ -112,6 +112,7 @@ struct igb_rx_queue {
uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */
uint32_t flags; /**< RX flags. */
uint64_t offloads; /**< offloads of DEV_RX_OFFLOAD_* */
+ const struct rte_memzone *mz;
};
/**
@@ -186,6 +187,7 @@ struct igb_tx_queue {
struct igb_advctx_info ctx_cache[IGB_CTX_NUM];
/**< Hardware context history.*/
uint64_t offloads; /**< offloads of DEV_TX_OFFLOAD_* */
+ const struct rte_memzone *mz;
};
#if 1
@@ -1276,6 +1278,7 @@ igb_tx_queue_release(struct igb_tx_queue *txq)
if (txq != NULL) {
igb_tx_queue_release_mbufs(txq);
rte_free(txq->sw_ring);
+ rte_memzone_free(txq->mz);
rte_free(txq);
}
}
@@ -1545,6 +1548,7 @@ eth_igb_tx_queue_setup(struct rte_eth_dev *dev,
return -ENOMEM;
}
+ txq->mz = tz;
txq->nb_tx_desc = nb_desc;
txq->pthresh = tx_conf->tx_thresh.pthresh;
txq->hthresh = tx_conf->tx_thresh.hthresh;
@@ -1601,6 +1605,7 @@ igb_rx_queue_release(struct igb_rx_queue *rxq)
if (rxq != NULL) {
igb_rx_queue_release_mbufs(rxq);
rte_free(rxq->sw_ring);
+ rte_memzone_free(rxq->mz);
rte_free(rxq);
}
}
@@ -1746,6 +1751,8 @@ eth_igb_rx_queue_setup(struct rte_eth_dev *dev,
igb_rx_queue_release(rxq);
return -ENOMEM;
}
+
+ rxq->mz = rz;
rxq->rdt_reg_addr = E1000_PCI_REG_ADDR(hw, E1000_RDT(rxq->reg_idx));
rxq->rdh_reg_addr = E1000_PCI_REG_ADDR(hw, E1000_RDH(rxq->reg_idx));
rxq->rx_ring_phys_addr = rz->iova;
@@ -1885,14 +1892,12 @@ igb_dev_free_queues(struct rte_eth_dev *dev)
for (i = 0; i < dev->data->nb_rx_queues; i++) {
eth_igb_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++) {
eth_igb_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;
}