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

Now the skb->nh union has just one member, .raw, i.e. it is just like the
skb->mac union, strange, no? I'm just leaving it like that till the transport
layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or
->mac_header_offset?), ditto for ->{h,nh}.

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/ipv6/ah6.c b/net/ipv6/ah6.c
index 1c914386982f..b682d2368c2a 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -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;
@@ -357,13 +358,14 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
         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];