[dpdk-stable] [PATCH] net/virtio-user: fix return value of tap offload sets not checked

[Yunjian Wang]

The function vhost_kernel_tap_set_offload() could return errors,
the return value need to be checked.

Fixes: 1db4d2330bc8 ("net/virtio-user: check negotiated features before set")
Cc: stable at dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
---
 drivers/net/virtio/virtio_user/vhost_kernel_tap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/virtio/virtio_user/vhost_kernel_tap.c b/drivers/net/virtio/virtio_user/vhost_kernel_tap.c
index 76bf754..f77d227 100644
--- a/drivers/net/virtio/virtio_user/vhost_kernel_tap.c
+++ b/drivers/net/virtio/virtio_user/vhost_kernel_tap.c
@@ -131,7 +131,8 @@
 		goto error;
 	}
 
-	vhost_kernel_tap_set_offload(tapfd, features);
+	if (vhost_kernel_tap_set_offload(tapfd, features) < 0)
+		goto error;
 
 	memset(&ifr, 0, sizeof(ifr));
 	ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
-- 
1.8.3.1