[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h

[linux-2.6] / net / ipv6 / ah6.c

diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index dc68b7269c3c90de00a54aacc072ad7faaca567e..b682d2368c2a5154e48eedb017ee8a3400590cb5 100644 (file)
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -238,8 +238,8 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
        top_iph = (struct ipv6hdr *)skb->data;
        top_iph->payload_len = htons(skb->len - sizeof(*top_iph));
 
-       nexthdr = *skb->nh.raw;
-       *skb->nh.raw = IPPROTO_AH;
+       nexthdr = *skb_network_header(skb);
+       *skb_network_header(skb) = IPPROTO_AH;
 
        /* When there are no extension headers, we only need to save the first
         * 8 bytes of the base IP header.
@@ -325,6 +325,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
         */
 
        struct ipv6_auth_hdr *ah;
+       struct ipv6hdr *ip6h;
        struct ah_data *ahp;
        unsigned char *tmp_hdr = NULL;
        u16 hdr_len;
@@ -341,7 +342,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
            pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
                goto out;
 
-       hdr_len = skb->data - skb->nh.raw;
+       hdr_len = skb->data - skb_network_header(skb);
        ah = (struct ipv6_auth_hdr*)skb->data;
        ahp = x->data;
        nexthdr = ah->nexthdr;
@@ -354,16 +355,17 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
        if (!pskb_may_pull(skb, ah_hlen))
                goto out;
 
-       tmp_hdr = kmemdup(skb->nh.raw, hdr_len, GFP_ATOMIC);
+       tmp_hdr = kmemdup(skb_network_header(skb), hdr_len, GFP_ATOMIC);
        if (!tmp_hdr)
                goto out;
-       if (ipv6_clear_mutable_options(skb->nh.ipv6h, hdr_len, XFRM_POLICY_IN))
+       ip6h = ipv6_hdr(skb);
+       if (ipv6_clear_mutable_options(ip6h, hdr_len, XFRM_POLICY_IN))
                goto free_out;
-       skb->nh.ipv6h->priority    = 0;
-       skb->nh.ipv6h->flow_lbl[0] = 0;
-       skb->nh.ipv6h->flow_lbl[1] = 0;
-       skb->nh.ipv6h->flow_lbl[2] = 0;
-       skb->nh.ipv6h->hop_limit   = 0;
+       ip6h->priority    = 0;
+       ip6h->flow_lbl[0] = 0;
+       ip6h->flow_lbl[1] = 0;
+       ip6h->flow_lbl[2] = 0;
+       ip6h->hop_limit   = 0;
 
        {
                u8 auth_data[MAX_AH_AUTH_LEN];
@@ -382,7 +384,9 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
                }
        }
 
-       skb->h.raw = memcpy(skb->nh.raw += ah_hlen, tmp_hdr, hdr_len);
+       skb->nh.raw += ah_hlen;
+       memcpy(skb_network_header(skb), tmp_hdr, hdr_len);
+       skb->h.raw = skb->nh.raw;
        __skb_pull(skb, ah_hlen + hdr_len);
 
        kfree(tmp_hdr);