diff options
| author | Bjoern A. Zeeb <bz@FreeBSD.org> | 2019-03-07 23:03:39 +0000 |
|---|---|---|
| committer | Bjoern A. Zeeb <bz@FreeBSD.org> | 2019-03-07 23:03:39 +0000 |
| commit | 30b450774e87134d6b9455e88019a1b52153b80c (patch) | |
| tree | 14a7b84c2f002d3df8c7088ae870153543a67089 /sys/netinet6/nd6.c | |
| parent | ede8782611af64451d65360371345224f9f7fdf3 (diff) | |
| download | src-30b450774e87134d6b9455e88019a1b52153b80c.tar.gz src-30b450774e87134d6b9455e88019a1b52153b80c.zip | |
Update for IETF draft-ietf-6man-ipv6only-flag.
When we roam between networks and our link-state goes down, automatically remove
the IPv6-Only flag from the interface. Otherwise we might switch from an
IPv6-only to and IPv4-only network and the flag would stay and we would prevent
IPv4 from working.
While the actual function call to clear the flag is under EXPERIMENTAL,
the eventhandler is not as we might want to re-use it for other
functionality on link-down event (such was re-calculate default routers
for example if there is more than one).
Reviewed by: hrs
Differential Revision: https://reviews.freebsd.org/D19487
Notes
Notes:
svn path=/head/; revision=344904
Diffstat (limited to 'sys/netinet6/nd6.c')
| -rw-r--r-- | sys/netinet6/nd6.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c index e9c4bb53b693..faab9f0adc8b 100644 --- a/sys/netinet6/nd6.c +++ b/sys/netinet6/nd6.c @@ -113,7 +113,7 @@ VNET_DEFINE(int, nd6_debug) = 1; VNET_DEFINE(int, nd6_debug) = 0; #endif -static eventhandler_tag lle_event_eh, iflladdr_event_eh; +static eventhandler_tag lle_event_eh, iflladdr_event_eh, ifnet_link_event_eh; VNET_DEFINE(struct nd_drhead, nd_defrouter); VNET_DEFINE(struct nd_prhead, nd_prefix); @@ -233,6 +233,8 @@ nd6_init(void) NULL, EVENTHANDLER_PRI_ANY); iflladdr_event_eh = EVENTHANDLER_REGISTER(iflladdr_event, nd6_iflladdr, NULL, EVENTHANDLER_PRI_ANY); + ifnet_link_event_eh = EVENTHANDLER_REGISTER(ifnet_link_event, + nd6_ifnet_link_event, NULL, EVENTHANDLER_PRI_ANY); } } @@ -244,6 +246,7 @@ nd6_destroy() callout_drain(&V_nd6_slowtimo_ch); callout_drain(&V_nd6_timer_ch); if (IS_DEFAULT_VNET(curvnet)) { + EVENTHANDLER_DEREGISTER(ifnet_link_event, ifnet_link_event_eh); EVENTHANDLER_DEREGISTER(lle_event, lle_event_eh); EVENTHANDLER_DEREGISTER(iflladdr_event, iflladdr_event_eh); } |