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Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index efa6a36cbfff..d9b5aa2290d6 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1200,9 +1200,23 @@ static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie)
static void ipv4_link_failure(struct sk_buff *skb)
{
+ struct ip_options opt;
struct rtable *rt;
+ int res;
- icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0);
+ /* Recompile ip options since IPCB may not be valid anymore.
+ */
+ memset(&opt, 0, sizeof(opt));
+ opt.optlen = ip_hdr(skb)->ihl*4 - sizeof(struct iphdr);
+
+ rcu_read_lock();
+ res = __ip_options_compile(dev_net(skb->dev), &opt, skb, NULL);
+ rcu_read_unlock();
+
+ if (res)
+ return;
+
+ __icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0, &opt);
rt = skb_rtable(skb);
if (rt)