summaryrefslogtreecommitdiffstats
path: root/net/ipv4/raw.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv4/raw.c')
-rw-r--r--net/ipv4/raw.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index f242578..a80740b 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -131,18 +131,23 @@ found:
* 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;
-
- if (!pskb_may_pull(skb, sizeof(struct icmphdr)))
+ struct icmphdr _hdr;
+ const struct icmphdr *hdr;
+
+ pr_err("icmp_filter skb_transport_offset %d data-head %ld len %d/%d\n",
+ skb_transport_offset(skb), skb->data - skb->head, skb->len, skb->data_len);
+ hdr = skb_header_pointer(skb, skb_transport_offset(skb),
+ sizeof(_hdr), &_hdr);
+ pr_err("head %p data %p hdr %p type %d\n", skb->head, skb->data, hdr, hdr ? hdr->type : -1);
+ 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 */
OpenPOWER on IntegriCloud