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platform: refresh links when parent gets removed

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When moving a link to another netns, it gets removed from
NMPlatform's view.

Currently kernel does not sent a notification to inform about
that change (see related bug rh#1262908).

Ensure that we reload all linked interfaces which now might
have an invisible parent.

(cherry picked from commit 2cd6aaa918)
This commit is contained in:
Thomas Haller 2015-09-14 15:05:00 +02:00
parent bdbc3bbb7b
commit e79caf9b4a
1 changed files with 31 additions and 0 deletions
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31
src/platform/nm-linux-platform.c
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@ -1873,6 +1873,37 @@ cache_pre_hook (NMPCache *cache, const NMPObject *old, const NMPObject *new, NMP
NULL);
}
}
{
int ifindex = -1;
/* removal of a link could be caused by moving the link to another netns.
* In this case, we potentially have to update other links that have this link as parent.
* Currently, kernel misses to sent us a notification in this case (rh #1262908). */
if ( ops_type == NMP_CACHE_OPS_REMOVED
&& old /* <-- nonsensical, make coverity happy */
&& old->_link.netlink.is_in_netlink)
ifindex = old->link.ifindex;
else if ( ops_type == NMP_CACHE_OPS_UPDATED
&& old && new /* <-- nonsensical, make coverity happy */
&& old->_link.netlink.is_in_netlink
&& !new->_link.netlink.is_in_netlink)
ifindex = new->link.ifindex;
if (ifindex > 0) {
const NMPlatformLink *const *links;
links = cache_lookup_all_objects (NMPlatformLink, platform, NMP_OBJECT_TYPE_LINK, FALSE);
if (links) {
for (; *links; links++) {
const NMPlatformLink *l = (*links);
if (l->parent == ifindex)
delayed_action_schedule (platform, DELAYED_ACTION_TYPE_REFRESH_LINK, GINT_TO_POINTER (l->ifindex));
}
}
}
}
{
/* if a link goes down, we must refresh routes */
if ( ops_type == NMP_CACHE_OPS_UPDATED