[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c
index 6cc3245..26e60fb 100644
--- a/net/ipv4/netfilter/iptable_mangle.c
+++ b/net/ipv4/netfilter/iptable_mangle.c
@@ -131,6 +131,7 @@
int (*okfn)(struct sk_buff *))
{
unsigned int ret;
+ const struct iphdr *iph;
u_int8_t tos;
__be32 saddr, daddr;
u_int32_t mark;
@@ -145,19 +146,23 @@
/* Save things which could affect route */
mark = (*pskb)->mark;
- saddr = (*pskb)->nh.iph->saddr;
- daddr = (*pskb)->nh.iph->daddr;
- tos = (*pskb)->nh.iph->tos;
+ iph = ip_hdr(*pskb);
+ saddr = iph->saddr;
+ daddr = iph->daddr;
+ tos = iph->tos;
ret = ipt_do_table(pskb, hook, in, out, &packet_mangler);
/* Reroute for ANY change. */
- if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE
- && ((*pskb)->nh.iph->saddr != saddr
- || (*pskb)->nh.iph->daddr != daddr
- || (*pskb)->mark != mark
- || (*pskb)->nh.iph->tos != tos))
- if (ip_route_me_harder(pskb, RTN_UNSPEC))
- ret = NF_DROP;
+ if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) {
+ iph = ip_hdr(*pskb);
+
+ if (iph->saddr != saddr ||
+ iph->daddr != daddr ||
+ (*pskb)->mark != mark ||
+ iph->tos != tos)
+ if (ip_route_me_harder(pskb, RTN_UNSPEC))
+ ret = NF_DROP;
+ }
return ret;
}