[SK_BUFF]: Introduce skb_network_header()

[net-next-2.6.git] / net / ipv6 / xfrm6_policy.c

diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index d8a585bd2cb40654cd16b7593ecabe190eae7f7e..cb5a723d4cb459358b5ce898592d7546ae591e75 100644 (file)
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -273,14 +273,16 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
        u16 offset = skb->h.raw - skb->nh.raw;
        struct ipv6hdr *hdr = skb->nh.ipv6h;
        struct ipv6_opt_hdr *exthdr;
-       u8 nexthdr = skb->nh.raw[IP6CB(skb)->nhoff];
+       const unsigned char *nh = skb_network_header(skb);
+       u8 nexthdr = nh[IP6CB(skb)->nhoff];
 
        memset(fl, 0, sizeof(struct flowi));
        ipv6_addr_copy(&fl->fl6_dst, &hdr->daddr);
        ipv6_addr_copy(&fl->fl6_src, &hdr->saddr);
 
-       while (pskb_may_pull(skb, skb->nh.raw + offset + 1 - skb->data)) {
-               exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
+       while (pskb_may_pull(skb, nh + offset + 1 - skb->data)) {
+               nh = skb_network_header(skb);
+               exthdr = (struct ipv6_opt_hdr *)(nh + offset);
 
                switch (nexthdr) {
                case NEXTHDR_ROUTING:
@@ -288,7 +290,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
                case NEXTHDR_DEST:
                        offset += ipv6_optlen(exthdr);
                        nexthdr = exthdr->nexthdr;
-                       exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
+                       exthdr = (struct ipv6_opt_hdr *)(nh + offset);
                        break;
 
                case IPPROTO_UDP:
@@ -296,7 +298,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
                case IPPROTO_TCP:
                case IPPROTO_SCTP:
                case IPPROTO_DCCP:
-                       if (pskb_may_pull(skb, skb->nh.raw + offset + 4 - skb->data)) {
+                       if (pskb_may_pull(skb, nh + offset + 4 - skb->data)) {
                                __be16 *ports = (__be16 *)exthdr;
 
                                fl->fl_ip_sport = ports[0];
@@ -306,7 +308,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
                        return;
 
                case IPPROTO_ICMPV6:
-                       if (pskb_may_pull(skb, skb->nh.raw + offset + 2 - skb->data)) {
+                       if (pskb_may_pull(skb, nh + offset + 2 - skb->data)) {
                                u8 *icmp = (u8 *)exthdr;
 
                                fl->fl_icmp_type = icmp[0];
@@ -317,7 +319,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
 
 #ifdef CONFIG_IPV6_MIP6
                case IPPROTO_MH:
-                       if (pskb_may_pull(skb, skb->nh.raw + offset + 3 - skb->data)) {
+                       if (pskb_may_pull(skb, nh + offset + 3 - skb->data)) {
                                struct ip6_mh *mh;
                                mh = (struct ip6_mh *)exthdr;