diff options
| author | David S. Miller <davem@davemloft.net> | 2009-11-08 23:00:54 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-08 23:00:54 -0800 |
| commit | d0e1e88d6e7dbd8e1661cb6a058ca30f54ee39e4 (patch) | |
| tree | daab7cc0db83226672f76d2fc9277e4355f89e6b /net/ipv4/ipip.c | |
| parent | 9e0d57fd6dad37d72a3ca6db00ca8c76f2215454 (diff) | |
| parent | 2606289779cb297320a185db5997729d29b6700b (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/ipip.c')
| -rw-r--r-- | net/ipv4/ipip.c | 32 |
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) { |