diff mbox series

[11/12] net/hns3: fix a segfault from secondary process

Message ID 20220519122917.2334-12-humin29@huawei.com (mailing list archive)
State Changes Requested, archived
Delegated to: Andrew Rybchenko
Headers
Series bugfix for hns3 PMD |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

humin (Q) May 19, 2022, 12:29 p.m. UTC 
  From: Huisong Li <lihuisong@huawei.com>

If a hns3 device in the secondary process is attached to do probing
operation, 'rx_queues' and 'tx_queues' in dev->data are null in
eth_dev_fp_ops_setup when calling rte_eth_dev_probing_finish. The primary
process calls dev_start to re-setup their fp_ops. But the secondary process
can't call dev_start and has no chance to do it. If the application sends
and receives packets at this time, a segfault will occur. So this patch
uses the MP communication of the PMD to update the fp_ops of the device in
the secondary process.

Fixes: 9e311d8f93b9 ("net/hns3: fix Rx/Tx when fast path operation introduced")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/hns3/hns3_rxtx.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 3f576fbf4b..0dc1d8cb60 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -4420,6 +4420,8 @@  hns3_eth_dev_fp_ops_config(const struct rte_eth_dev *dev)
 	fpo[port_id].tx_pkt_prepare = dev->tx_pkt_prepare;
 	fpo[port_id].rx_descriptor_status = dev->rx_descriptor_status;
 	fpo[port_id].tx_descriptor_status = dev->tx_descriptor_status;
+	fpo[port_id].rxq.data = dev->data->rx_queues;
+	fpo[port_id].txq.data = dev->data->tx_queues;
 }
 
 void