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authorJim Paris <jim@jtan.com>2008-01-31 16:36:25 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-31 19:28:21 -0800
commit23717795bee15470b96f9b7aa5ecf4efe14c8e32 (patch)
tree5c9f3d3fc0ef0cddd1af52737128185d90dda9ba
parentfa4d3c6210380c55cf7f295d28fd981fbcbb828c (diff)
downloadop-kernel-dev-23717795bee15470b96f9b7aa5ecf4efe14c8e32.zip
op-kernel-dev-23717795bee15470b96f9b7aa5ecf4efe14c8e32.tar.gz
[IPV6]: Update MSS even if MTU is unchanged.
This is needed because in ndisc.c, we have: static void ndisc_router_discovery(struct sk_buff *skb) { // ... if (ndopts.nd_opts_mtu) { // ... if (rt) rt->u.dst.metrics[RTAX_MTU-1] = mtu; rt6_mtu_change(skb->dev, mtu); // ... } Since the mtu is set directly here, rt6_mtu_change_route thinks that it is unchanged, and so it fails to update the MSS accordingly. This patch lets rt6_mtu_change_route still update MSS if old_mtu == new_mtu. Signed-off-by: Jim Paris <jim@jtan.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv6/route.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index bf6b665..513f72e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1909,7 +1909,7 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
*/
if (rt->rt6i_dev == arg->dev &&
!dst_metric_locked(&rt->u.dst, RTAX_MTU) &&
- (dst_mtu(&rt->u.dst) > arg->mtu ||
+ (dst_mtu(&rt->u.dst) >= arg->mtu ||
(dst_mtu(&rt->u.dst) < arg->mtu &&
dst_mtu(&rt->u.dst) == idev->cnf.mtu6))) {
rt->u.dst.metrics[RTAX_MTU-1] = arg->mtu;
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