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MFC r196504:

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When moving ifnets from one vnet to another, and the ifnet
  has ifaddresses of AF_LINK type which thus have an embedded
  if_index "backpointer", we must update that if_index backpointer
  to reflect the new if_index that our ifnet just got assigned.

  This change affects only options VIMAGE builds.

  Submitted by: bz
  Reviewed by:  bz
  Approved by:  re (rwatson), julian (mentor)

Approved by:	re (rwatson)
This commit is contained in:
zec 2009-08-28 19:18:20 +00:00
parent efa17b0037
commit 46cd60482c
1 changed files with 15 additions and 0 deletions
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15
sys/net/if.c
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@ -570,6 +570,21 @@ if_attach_internal(struct ifnet *ifp, int vmove)
/* Reliably crash if used uninitialized. */
ifp->if_broadcastaddr = NULL;
}
#ifdef VIMAGE
else {
/*
* Update the interface index in the link layer address
* of the interface.
*/
for (ifa = ifp->if_addr; ifa != NULL;
ifa = TAILQ_NEXT(ifa, ifa_link)) {
if (ifa->ifa_addr->sa_family == AF_LINK) {
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
sdl->sdl_index = ifp->if_index;
}
}
}
#endif
IFNET_WLOCK();
TAILQ_INSERT_TAIL(&V_ifnet, ifp, if_link);