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| author | Timo Teräs <timo.teras@iki.fi> | 2013-05-28 05:30:23 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-29 00:11:02 +0400 |
| commit | 6c8b4e3ff81b82fc153625e81e60af1d89de2c32 (patch) | |
| tree | 88f8d3413e9fa93c9683ba2fef44167de2f583c9 /net/ipv4/arp.c | |
| parent | be9efd3653284f2827fd82861e8e9db9a8f726e1 (diff) | |
| download | linux-6c8b4e3ff81b82fc153625e81e60af1d89de2c32.tar.xz | |
arp: flush arp cache on IFF_NOARP change
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 <timo.teras@iki.fi>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
v2->v3: shortened notifier_info struct name
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/arp.c')
| -rw-r--r-- | net/ipv4/arp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index bf574029a183..4429b013f269 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 = netdev_notifier_info_to_dev(ptr); + struct netdev_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; } |