[IP]: Introduce ip_hdrlen()

[net-next-2.6.git] / net / ipv4 / netfilter / nf_conntrack_proto_icmp.c

diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
index 5fd1e5363c1ab60ed9ec1e3e70505247f79327e3..e090e929e6e290a6068c109063c30462eb84ae6d 100644 (file)
--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -158,7 +158,7 @@ icmp_error_message(struct sk_buff *skb,
        NF_CT_ASSERT(skb->nfct == NULL);
 
        /* Not enough header? */
-       inside = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_in), &_in);
+       inside = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_in), &_in);
        if (inside == NULL)
                return -NF_ACCEPT;
 
@@ -172,7 +172,7 @@ icmp_error_message(struct sk_buff *skb,
        /* rcu_read_lock()ed by nf_hook_slow */
        innerproto = __nf_ct_l4proto_find(PF_INET, inside->ip.protocol);
 
-       dataoff = skb->nh.iph->ihl*4 + sizeof(inside->icmp);
+       dataoff = ip_hdrlen(skb) + sizeof(inside->icmp);
        /* Are they talking about one of our connections? */
        if (!nf_ct_get_tuple(skb, dataoff, dataoff + inside->ip.ihl*4, PF_INET,
                             inside->ip.protocol, &origtuple,
@@ -227,7 +227,7 @@ icmp_error(struct sk_buff *skb, unsigned int dataoff,
        struct icmphdr _ih, *icmph;
 
        /* Not enough header? */
-       icmph = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_ih), &_ih);
+       icmph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_ih), &_ih);
        if (icmph == NULL) {
                if (LOG_INVALID(IPPROTO_ICMP))
                        nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL,