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authorPatrick McHardy <kaber@trash.net>2005-08-09 19:45:02 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 15:37:22 -0700
commitd13964f4490157b8a290903362bfbc54f750a6bc (patch)
tree377297846b513224a30185fb279afd6640e361f5 /net/ipv6
parent0bd1b59b15e4057101c89d4db15a3683c0d897f7 (diff)
[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>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ip6_input.c4
-rw-r--r--net/ipv6/raw.c5
2 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index ab51c0369e1..6e348042693 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -166,8 +166,8 @@ resubmit:
nexthdr = skb->nh.raw[nhoff];
raw_sk = sk_head(&raw_v6_htable[nexthdr & (MAX_INET_PROTOS - 1)]);
- if (raw_sk)
- ipv6_raw_deliver(skb, nexthdr);
+ if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
+ raw_sk = NULL;
hash = nexthdr & (MAX_INET_PROTOS - 1);
if ((ipprot = rcu_dereference(inet6_protos[hash])) != NULL) {
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 9db0de81f07..a082646e6f1 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -141,11 +141,12 @@ static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
*
* 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 @@ void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
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 @@ void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
}
out:
read_unlock(&raw_v6_lock);
+ return delivered;
}
/* This cleans up af_inet6 a bit. -DaveM */