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Make it possible to set a larger MTU by attempting to set MTUs on all

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trunk ports first.  If that succeeds, and we're inside our own bounds,
so be it.

Still not ideal -- adding a port after changing an MTU doesn't change
port's MTU, but a step in the right direction.

PR:		kern/95417
Submitted by:	Vladimir Ivanov <wawa AT yandex-team DOT ru>
MFC after:	3 days

I've slightly edited a patch to make the conditional logic positive
and remove (what I think was) a redundant ng_fec_init() call.
This commit is contained in:
Ruslan Ermilov 2006-09-15 16:06:27 +00:00
parent 3d82b87057
commit 7f01dc25c4
1 changed files with 19 additions and 1 deletions
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20
sys/netgraph/ng_fec.c
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@ -694,10 +694,28 @@ ng_fec_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
/* These two are mostly handled at a higher layer */
case SIOCSIFADDR:
case SIOCGIFADDR:
case SIOCSIFMTU:
error = ether_ioctl(ifp, command, data);
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu >= NG_FEC_MTU_MIN &&
ifr->ifr_mtu <= NG_FEC_MTU_MAX) {
struct ng_fec_portlist *p;
struct ifnet *bifp;
TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
bifp = p->fec_if;
error = (*bifp->if_ioctl)(bifp, SIOCSIFMTU,
data);
if (error != 0)
break;
}
if (error == 0)
ifp->if_mtu = ifr->ifr_mtu;
} else
error = EINVAL;
break;
/* Set flags */
case SIOCSIFFLAGS:
/*