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Do not report current link status if driver is not running.

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Reporting link status in driver has a side-effect that makes mii(4)
check current link status.  mii(4) will call link status change
callback when it sees link state change.  Normally this wouldn't
have problems. However, ASF/IPMI firmware can actively access PHY
regardless of driver's running state such that reporting link
status for not-running interface can generate meaningless link
UP/DOWN messages.

This change also makes dhclient think driver got a valid link
regardless of link establishment so it will bypass dhclient's
initial link status check. I think that wouldn't be issue
though.

Tested by:	Daniel Braniss <danny@cs.huji.ac.il>
This commit is contained in:
yongari 2013-06-07 01:01:39 +00:00
parent 8880214a49
commit bcc118f0b2
1 changed files with 4 additions and 0 deletions
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4
sys/dev/bge/if_bge.c
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@ -5583,6 +5583,10 @@ bge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
BGE_LOCK(sc);
if ((ifp->if_flags & IFF_UP) == 0) {
BGE_UNLOCK(sc);
return;
}
if (sc->bge_flags & BGE_FLAG_TBI) {
ifmr->ifm_status = IFM_AVALID;
ifmr->ifm_active = IFM_ETHER;