diff options
| author | Steffen Klassert <steffen.klassert@secunet.com> | 2013-01-16 20:58:10 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-14 10:48:31 -0800 |
| commit | b8291bbfa392773abe54aed10e6c5553d8cde8b3 (patch) | |
| tree | b51c8dc880f0e9f0dc07b9c411dcb97525457875 /net | |
| parent | 0196923c77f46e98e38bc39e42e5f2c646c6733c (diff) | |
ipv4: Don't update the pmtu on mtu locked routes
[ Upstream commit fa1e492aa3cbafba9f8fc6d05e5b08a3091daf4a ]
Routes with locked mtu should not use learned pmtu informations,
so do not update the pmtu on these routes.
Reported-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/route.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 11d28e3ff0d..0660d6f1a1c 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -912,6 +912,9 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu) struct dst_entry *dst = &rt->dst; struct fib_result res; + if (dst_metric_locked(dst, RTAX_MTU)) + return; + if (dst->dev->mtu < mtu) return; |