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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/ipv4/raw.c
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/ipv4/raw.c')
-rw-r--r--net/ipv4/raw.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index d1835b1bc8c4..e222c5c26b32 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -150,10 +150,11 @@ static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
* RFC 1122: SHOULD pass TOS value up to the transport layer.
* -> It does. And not only TOS, but all IP header.
*/
-void raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
+int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
{
struct sock *sk;
struct hlist_head *head;
+ int delivered = 0;
read_lock(&raw_v4_lock);
head = &raw_v4_htable[hash];
@@ -164,6 +165,7 @@ void raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
skb->dev->ifindex);
while (sk) {
+ delivered = 1;
if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) {
struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
@@ -177,6 +179,7 @@ void raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
}
out:
read_unlock(&raw_v4_lock);
+ return delivered;
}
void raw_err (struct sock *sk, struct sk_buff *skb, u32 info)