net/virtio-user: check tap system call setting

[dpdk.git] / drivers / net / virtio / virtio_user / vhost_kernel_tap.c

diff --git a/drivers/net/virtio/virtio_user/vhost_kernel_tap.c b/drivers/net/virtio/virtio_user/vhost_kernel_tap.c
index 2fa4f0d..acddefa 100644 (file)
--- a/drivers/net/virtio/virtio_user/vhost_kernel_tap.c
+++ b/drivers/net/virtio/virtio_user/vhost_kernel_tap.c
@@ -128,7 +128,10 @@ vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq,
                goto error;
        }
 
-       fcntl(tapfd, F_SETFL, O_NONBLOCK);
+       if (fcntl(tapfd, F_SETFL, O_NONBLOCK) < 0) {
+               PMD_DRV_LOG(ERR, "fcntl tapfd failed: %s", strerror(errno));
+               goto error;
+       }
 
        if (ioctl(tapfd, TUNSETVNETHDRSZ, &hdr_size) < 0) {
                PMD_DRV_LOG(ERR, "TUNSETVNETHDRSZ failed: %s", strerror(errno));