[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph

[pandora-kernel.git] / net / ipv4 / ip_options.c

diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index f906a80..2513468 100644 (file)
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -40,7 +40,7 @@
 void ip_options_build(struct sk_buff * skb, struct ip_options * opt,
                            __be32 daddr, struct rtable *rt, int is_frag)
 {
-       unsigned char * iph = skb->nh.raw;
+       unsigned char *iph = skb_network_header(skb);
 
        memcpy(&(IPCB(skb)->opt), opt, sizeof(struct ip_options));
        memcpy(iph+sizeof(struct iphdr), opt->__data, opt->optlen);
@@ -104,13 +104,13 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
                return 0;
        }
 
-       sptr = skb->nh.raw;
+       sptr = skb_network_header(skb);
        dptr = dopt->__data;
 
        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) {
@@ -217,7 +218,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
 
 void ip_options_fragment(struct sk_buff * skb)
 {
-       unsigned char * optptr = skb->nh.raw + sizeof(struct iphdr);
+       unsigned char *optptr = skb_network_header(skb) + sizeof(struct iphdr);
        struct ip_options * opt = &(IPCB(skb)->opt);
        int  l = opt->optlen;
        int  optlen;
@@ -264,12 +265,13 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
 
        if (!opt) {
                opt = &(IPCB(skb)->opt);
-               iph = skb->nh.raw;
+               iph = skb_network_header(skb);
                opt->optlen = ((struct iphdr *)iph)->ihl*4 - sizeof(struct iphdr);
                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);
        }
 
@@ -563,7 +565,7 @@ void ip_forward_options(struct sk_buff *skb)
        struct   ip_options * opt       = &(IPCB(skb)->opt);
        unsigned char * optptr;
        struct rtable *rt = (struct rtable*)skb->dst;
-       unsigned char *raw = skb->nh.raw;
+       unsigned char *raw = skb_network_header(skb);
 
        if (opt->rr_needaddr) {
                optptr = (unsigned char *)raw + opt->rr;
@@ -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));
        }
 }
 
@@ -608,8 +610,8 @@ 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;
-       unsigned char * optptr = skb->nh.raw + opt->srr;
+       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;
        int err;