- if (nm_tx_pending(ring))
- {
- ioctl(nif->fd, NIOCTXSYNC, NULL);
- clib_cpu_time_wait(time_constant);
+ if (nm_tx_pending (ring))
+ {
+ if (ioctl (nif->fd, NIOCTXSYNC, NULL) < 0)
+ clib_unix_warning ("NIOCTXSYNC");
+ clib_cpu_time_wait (time_constant);