diff options
| author | Steffen Klassert | 2013-01-16 20:58:10 +0000 |
|---|---|---|
| committer | David S. Miller | 2013-01-17 03:39:36 -0500 |
| commit | fa1e492aa3cbafba9f8fc6d05e5b08a3091daf4a (patch) | |
| tree | 74f0153ddfa82c4503be46bf03b80641c10a6c78 | |
| parent | 38d523e2948162776903349c89d65f7b9370dadb (diff) | |
ipv4: Don't update the pmtu on mtu locked routes
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>
| -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 6e4a89c5e27e..259cbeee9a8b 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; |