[patch net-next 3/3] arp: flush arp cache on IFF_NOARP change
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STALE4891d
SUPERSEDED
From: Jiri Pirko <jiri@resnulli.us>
Date: 2013-05-28 08:11:08
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Revision v1 of 3 in this series.
Revisions (3)
- v1 current
- v2 [diff vs current]
- v3 [diff vs current]
From: Timo Teräs <redacted> IFF_NOARP affects what kind of neighbor entries are created (nud NOARP or nud INCOMPLETE). If the flag changes, flush the arp cache to refresh all entries. Signed-off-by: Timo Teräs <redacted> Signed-off-by: Jiri Pirko <jiri@resnulli.us> --- net/ipv4/arp.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index b455213..8c8eb40 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c@@ -1235,12 +1235,18 @@ static int arp_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = get_netdevice_notifier_info_dev(ptr); + struct netdevice_notifier_change_info *change_info; switch (event) { case NETDEV_CHANGEADDR: neigh_changeaddr(&arp_tbl, dev); rt_cache_flush(dev_net(dev)); break; + case NETDEV_CHANGE: + change_info = ptr; + if (change_info->flags_changed & IFF_NOARP) + neigh_changeaddr(&arp_tbl, dev); + break; default: break; }
--
1.7.11.7