[IPV4/6]: Check if packet was actually delivered to a raw socket to decide whether to send an ICMP unreachable
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 9db0de8..a082646 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -141,11 +141,12 @@
*
* Caller owns SKB so we must make clones.
*/
-void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
+int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
{
struct in6_addr *saddr;
struct in6_addr *daddr;
struct sock *sk;
+ int delivered = 0;
__u8 hash;
saddr = &skb->nh.ipv6h->saddr;
@@ -167,6 +168,7 @@
sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, skb->dev->ifindex);
while (sk) {
+ delivered = 1;
if (nexthdr != IPPROTO_ICMPV6 || !icmpv6_filter(sk, skb)) {
struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
@@ -179,6 +181,7 @@
}
out:
read_unlock(&raw_v6_lock);
+ return delivered;
}
/* This cleans up af_inet6 a bit. -DaveM */