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Diffstat (limited to 'net/ipv4/ip_tunnel.c')
-rw-r--r--net/ipv4/ip_tunnel.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index ee65c9225178..64594aa755f0 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -759,8 +759,11 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
goto tx_error;
}
- if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off, inner_iph,
- 0, 0, false)) {
+ df = tnl_params->frag_off;
+ if (skb->protocol == htons(ETH_P_IP) && !tunnel->ignore_df)
+ df |= (inner_iph->frag_off & htons(IP_DF));
+
+ if (tnl_update_pmtu(dev, skb, rt, df, inner_iph, 0, 0, false)) {
ip_rt_put(rt);
goto tx_error;
}
@@ -788,10 +791,6 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
ttl = ip4_dst_hoplimit(&rt->dst);
}
- df = tnl_params->frag_off;
- if (skb->protocol == htons(ETH_P_IP) && !tunnel->ignore_df)
- df |= (inner_iph->frag_off&htons(IP_DF));
-
max_headroom = LL_RESERVED_SPACE(rt->dst.dev) + sizeof(struct iphdr)
+ rt->dst.header_len + ip_encap_hlen(&tunnel->encap);
if (max_headroom > dev->needed_headroom)