diff options
| author | brian <brian@FreeBSD.org> | 1999-08-06 13:53:03 +0000 |
|---|---|---|
| committer | brian <brian@FreeBSD.org> | 1999-08-06 13:53:03 +0000 |
| commit | 29c67703e3751c283a1bdfe7764effe015c13b83 (patch) | |
| tree | ef1e40a5b9d87f3d7f7d7336ae7dc5a534520d3d /sys/net/if_loop.c | |
| parent | df1c1756e31202c817f6c35422ebc847da176a0a (diff) | |
| download | FreeBSD-src-29c67703e3751c283a1bdfe7764effe015c13b83.zip FreeBSD-src-29c67703e3751c283a1bdfe7764effe015c13b83.tar.gz | |
Define IF_MAXMTU and IF_MINMTU and don't allow MTUs with
out-of-range values.
``comparison is always 0'' warnings are silly !
Ok'd by: wollman, dg
Advised by: bde
Diffstat (limited to 'sys/net/if_loop.c')
| -rw-r--r-- | sys/net/if_loop.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c index 55abbf5..bc4b544 100644 --- a/sys/net/if_loop.c +++ b/sys/net/if_loop.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)if_loop.c 8.1 (Berkeley) 6/10/93 - * $Id: if_loop.c,v 1.38 1999/02/20 21:03:53 dt Exp $ + * $Id: if_loop.c,v 1.39 1999/07/06 19:23:13 des Exp $ */ /* @@ -346,7 +346,10 @@ loioctl(ifp, cmd, data) break; case SIOCSIFMTU: - ifp->if_mtu = ifr->ifr_mtu; + if (ifr->ifr_mtu < IF_MINMTU || ifr->ifr_mtu > IF_MAXMTU) + error = EINVAL; + else + ifp->if_mtu = ifr->ifr_mtu; break; case SIOCSIFFLAGS: |
