[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>

1 files changed, 8 insertions, 6 deletions

diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index f7e9db612565..251346828cb4 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -110,7 +110,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
         if (skb->dst)
                 daddr = ((struct rtable*)skb->dst)->rt_spec_dst;
         else
-                daddr = skb->nh.iph->daddr;
+                daddr = ip_hdr(skb)->daddr;
 
         if (sopt->rr) {
                 optlen  = sptr[sopt->rr+1];
@@ -180,7 +180,8 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
                         /*
                          * RFC1812 requires to fix illegal source routes.
                          */
-                        if (memcmp(&skb->nh.iph->saddr, &start[soffset+3], 4) == 0)
+                        if (memcmp(&ip_hdr(skb)->saddr,
+                                   &start[soffset + 3], 4) == 0)
                                 doffset -= 4;
                 }
                 if (doffset > 3) {
@@ -269,7 +270,8 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
                 optptr = iph + sizeof(struct iphdr);
                 opt->is_data = 0;
         } else {
-                optptr = opt->is_data ? opt->__data : (unsigned char*)&(skb->nh.iph[1]);
+                optptr = opt->is_data ? opt->__data :
+                                        (unsigned char *)&(ip_hdr(skb)[1]);
                 iph = optptr - sizeof(struct iphdr);
         }
 
@@ -587,7 +589,7 @@ void ip_forward_options(struct sk_buff *skb)
                 if (srrptr + 3 <= srrspace) {
                         opt->is_changed = 1;
                         ip_rt_get_source(&optptr[srrptr-1], rt);
-                        skb->nh.iph->daddr = rt->rt_dst;
+                        ip_hdr(skb)->daddr = rt->rt_dst;
                         optptr[2] = srrptr+4;
                 } else if (net_ratelimit())
                         printk(KERN_CRIT "ip_forward(): Argh! Destination lost!\n");
@@ -599,7 +601,7 @@ void ip_forward_options(struct sk_buff *skb)
         }
         if (opt->is_changed) {
                 opt->is_changed = 0;
-                ip_send_check(skb->nh.iph);
+                ip_send_check(ip_hdr(skb));
         }
 }
 
@@ -608,7 +610,7 @@ int ip_options_rcv_srr(struct sk_buff *skb)
         struct ip_options *opt = &(IPCB(skb)->opt);
         int srrspace, srrptr;
         __be32 nexthop;
-        struct iphdr *iph = skb->nh.iph;
+        struct iphdr *iph = ip_hdr(skb);
         unsigned char *optptr = skb_network_header(skb) + opt->srr;
         struct rtable *rt = (struct rtable*)skb->dst;
         struct rtable *rt2;