[SK_BUFF]: Introduce skb_transport_header(skb)

For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 85202891644e..f0288e92fb52 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -92,10 +92,10 @@ int mip6_mh_filter(struct sock *sk, struct sk_buff *skb)
 
         if (!pskb_may_pull(skb, (skb_transport_offset(skb)) + 8) ||
             !pskb_may_pull(skb, (skb_transport_offset(skb) +
-                                 ((skb->h.raw[1] + 1) << 3))))
+                                 ((skb_transport_header(skb)[1] + 1) << 3))))
                 return -1;
 
-        mh = (struct ip6_mh *)skb->h.raw;
+        mh = (struct ip6_mh *)skb_transport_header(skb);
 
         if (mh->ip6mh_hdrlen < mip6_mh_len(mh->ip6mh_type)) {
                 LIMIT_NETDEBUG(KERN_DEBUG "mip6: MH message too short: %d vs >=%d\n",
@@ -158,7 +158,7 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
         nexthdr = *skb_network_header(skb);
         *skb_network_header(skb) = IPPROTO_DSTOPTS;
 
-        dstopt = (struct ipv6_destopt_hdr *)skb->h.raw;
+        dstopt = (struct ipv6_destopt_hdr *)skb_transport_header(skb);
         dstopt->nexthdr = nexthdr;
 
         hao = mip6_padn((char *)(dstopt + 1),
@@ -370,7 +370,7 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
         nexthdr = *skb_network_header(skb);
         *skb_network_header(skb) = IPPROTO_ROUTING;
 
-        rt2 = (struct rt2_hdr *)skb->h.raw;
+        rt2 = (struct rt2_hdr *)skb_transport_header(skb);
         rt2->rt_hdr.nexthdr = nexthdr;
         rt2->rt_hdr.hdrlen = (x->props.header_len >> 3) - 1;
         rt2->rt_hdr.type = IPV6_SRCRT_TYPE_2;