diff options
| -rw-r--r-- | sys/net/if_gif.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sys/net/if_gif.c b/sys/net/if_gif.c index f19474835e8..cf74f68ca26 100644 --- a/sys/net/if_gif.c +++ b/sys/net/if_gif.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_gif.c,v 1.34 2006/03/04 22:40:15 brad Exp $ */ +/* $OpenBSD: if_gif.c,v 1.35 2006/03/11 03:58:37 brad Exp $ */ /* $KAME: if_gif.c,v 1.43 2001/02/20 08:51:07 itojun Exp $ */ /* @@ -548,9 +548,12 @@ gif_ioctl(ifp, cmd, data) /* if_ioctl() takes care of it */ break; - case SIOCSIFMTU: - ifp->if_mtu = ((struct ifreq *)data)->ifr_mtu; - break; + case SIOCSIFMTU: + if (ifr->ifr_mtu < GIF_MTU_MIN || ifr->ifr_mtu > GIF_MTU_MAX) + error = EINVAL; + else + ifp->if_mtu = ifr->ifr_mtu; + break; default: error = EINVAL; |