int flags;
flags = fcntl(dev->vhostfd, F_GETFL);
- fcntl(dev->vhostfd, F_SETFL, flags | O_NONBLOCK);
+ if (fcntl(dev->vhostfd, F_SETFL,
+ flags | O_NONBLOCK) == -1) {
+ PMD_DRV_LOG(ERR, "error setting O_NONBLOCK flag");
+ return;
+ }
r = recv(dev->vhostfd, buf, 128, MSG_PEEK);
if (r == 0 || (r < 0 && errno != EAGAIN)) {
dev->status &= (~VIRTIO_NET_S_LINK_UP);