upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-06-08 16:22:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

if_bridge: change MTU for new members

Browse source 
Rather than reject new bridge members because they have the wrong MTU
change it to match the bridge. If that fails, reject the new interface.

PR:	264883
Different Revision:	https://reviews.freebsd.org/D35597
This commit is contained in:
Kristof Provost 2022-06-25 13:39:44 +02:00
parent 9971e6aff1
commit 1865ebfb12
1 changed files with 15 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
sys/net/if_bridge.c
View file

@ -1266,9 +1266,21 @@ bridge_ioctl_add(struct bridge_softc *sc, void *arg)
if (CK_LIST_EMPTY(&sc->sc_iflist))
sc->sc_ifp->if_mtu = ifs->if_mtu;
else if (sc->sc_ifp->if_mtu != ifs->if_mtu) {
if_printf(sc->sc_ifp, "invalid MTU: %u(%s) != %u\n",
ifs->if_mtu, ifs->if_xname, sc->sc_ifp->if_mtu);
return (EINVAL);
struct ifreq ifr;
snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s",
ifs->if_xname);
ifr.ifr_mtu = sc->sc_ifp->if_mtu;
error = (*ifs->if_ioctl)(ifs,
SIOCSIFMTU, (caddr_t)&ifr);
if (error != 0) {
log(LOG_NOTICE, "%s: invalid MTU: %u for"
" new member %s\n", sc->sc_ifp->if_xname,
ifr.ifr_mtu,
ifs->if_xname);
return (EINVAL);
}
}
bif = malloc(sizeof(*bif), M_DEVBUF, M_NOWAIT|M_ZERO);