[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, 7 insertions, 9 deletions

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index bb65779be7a6..05b59a77bc69 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -602,7 +602,7 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                 skb_reset_network_header(skb2);
 
                 /* Try to guess incoming interface */
-                rt = rt6_lookup(&skb2->nh.ipv6h->saddr, NULL, 0, 0);
+                rt = rt6_lookup(&ipv6_hdr(skb2)->saddr, NULL, 0, 0);
 
                 if (rt && rt->rt6i_dev)
                         skb2->dev = rt->rt6i_dev;
@@ -636,10 +636,10 @@ static void ip6ip6_dscp_ecn_decapsulate(struct ip6_tnl *t,
                                         struct sk_buff *skb)
 {
         if (t->parms.flags & IP6_TNL_F_RCV_DSCP_COPY)
-                ipv6_copy_dscp(ipv6h, skb->nh.ipv6h);
+                ipv6_copy_dscp(ipv6h, ipv6_hdr(skb));
 
         if (INET_ECN_is_ce(ipv6_get_dsfield(ipv6h)))
-                IP6_ECN_set_ce(skb->nh.ipv6h);
+                IP6_ECN_set_ce(ipv6_hdr(skb));
 }
 
 static inline int ip6_tnl_rcv_ctl(struct ip6_tnl *t)
@@ -679,10 +679,8 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol,
                                                     struct ipv6hdr *ipv6h,
                                                     struct sk_buff *skb))
 {
-        struct ipv6hdr *ipv6h;
         struct ip6_tnl *t;
-
-        ipv6h = skb->nh.ipv6h;
+        struct ipv6hdr *ipv6h = ipv6_hdr(skb);
 
         read_lock(&ip6_tnl_lock);
 
@@ -836,7 +834,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
 {
         struct ip6_tnl *t = netdev_priv(dev);
         struct net_device_stats *stats = &t->stat;
-        struct ipv6hdr *ipv6h = skb->nh.ipv6h;
+        struct ipv6hdr *ipv6h = ipv6_hdr(skb);
         struct ipv6_tel_txoption opt;
         struct dst_entry *dst;
         struct net_device *tdev;
@@ -909,7 +907,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
         }
         skb_push(skb, sizeof(struct ipv6hdr));
         skb_reset_network_header(skb);
-        ipv6h = skb->nh.ipv6h;
+        ipv6h = ipv6_hdr(skb);
         *(__be32*)ipv6h = fl->fl6_flowlabel | htonl(0x60000000);
         dsfield = INET_ECN_encapsulate(0, dsfield);
         ipv6_change_dsfield(ipv6h, ~INET_ECN_MASK, dsfield);
@@ -983,7 +981,7 @@ static inline int
 ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 {
         struct ip6_tnl *t = netdev_priv(dev);
-        struct ipv6hdr *ipv6h = skb->nh.ipv6h;
+        struct ipv6hdr *ipv6h = ipv6_hdr(skb);
         int encap_limit = -1;
         __u16 offset;
         struct flowi fl;