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yaml
---
r: 323158
b: refs/heads/master
c: ab43ed8
h: refs/heads/master
v: v3
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Eric Dumazet authored and David S. Miller committed Sep 22, 2012
1 parent e723a73 commit 4c05437
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Showing 2 changed files with 9 additions and 7 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 9913b8c8f05b0aad97432900fa3b2cdfd557eeb5
refs/heads/master: ab43ed8b7490cb387782423ecf74aeee7237e591
14 changes: 8 additions & 6 deletions trunk/net/ipv4/raw.c
Original file line number Diff line number Diff line change
Expand Up @@ -131,18 +131,20 @@ static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
* 0 - deliver
* 1 - block
*/
static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
static int icmp_filter(const struct sock *sk, const struct sk_buff *skb)
{
int type;
struct icmphdr _hdr;
const struct icmphdr *hdr;

if (!pskb_may_pull(skb, sizeof(struct icmphdr)))
hdr = skb_header_pointer(skb, skb_transport_offset(skb),
sizeof(_hdr), &_hdr);
if (!hdr)
return 1;

type = icmp_hdr(skb)->type;
if (type < 32) {
if (hdr->type < 32) {
__u32 data = raw_sk(sk)->filter.data;

return ((1 << type) & data) != 0;
return ((1U << hdr->type) & data) != 0;
}

/* Do not block unknown ICMP types */
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