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[IPV4/6]: Check if packet was actually delivered to a raw socket to decide whether to send an ICMP unreachable

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2005-08-09 19:45:02 -07:00
committed by David S. Miller
parent 0bd1b59b15
commit d13964f449
6 changed files with 14 additions and 8 deletions
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5
net/ipv4/raw.c
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@@ -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)