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authorDavid S. Miller <davem@davemloft.net>2009-11-08 23:00:54 -0800
committerDavid S. Miller <davem@davemloft.net>2009-11-08 23:00:54 -0800
commitd0e1e88d6e7dbd8e1661cb6a058ca30f54ee39e4 (patch)
treedaab7cc0db83226672f76d2fc9277e4355f89e6b /net/ipv4
parent9e0d57fd6dad37d72a3ca6db00ca8c76f2215454 (diff)
parent2606289779cb297320a185db5997729d29b6700b (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/can/usb/ems_usb.c
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/ipip.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index a2ca53da437..c5b1f71c3cd 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -446,25 +446,27 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
goto tx_error;
}
- if (tiph->frag_off)
+ df |= old_iph->frag_off & htons(IP_DF);
+
+ if (df) {
mtu = dst_mtu(&rt->u.dst) - sizeof(struct iphdr);
- else
- mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
- if (mtu < 68) {
- stats->collisions++;
- ip_rt_put(rt);
- goto tx_error;
- }
- if (skb_dst(skb))
- skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
+ if (mtu < 68) {
+ stats->collisions++;
+ ip_rt_put(rt);
+ goto tx_error;
+ }
- df |= (old_iph->frag_off&htons(IP_DF));
+ if (skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
- if ((old_iph->frag_off&htons(IP_DF)) && mtu < ntohs(old_iph->tot_len)) {
- icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
- ip_rt_put(rt);
- goto tx_error;
+ if ((old_iph->frag_off & htons(IP_DF)) &&
+ mtu < ntohs(old_iph->tot_len)) {
+ icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
+ htonl(mtu));
+ ip_rt_put(rt);
+ goto tx_error;
+ }
}
if (tunnel->err_count > 0) {