[SK_BUFF]: Introduce skb_network_header_len

For the common sequence "skb->h.raw - skb->nh.raw", similar to skb->mac_len,
that is precalculated tho, don't think we need to bloat skb with one more
member, so just use this new helper, reducing the number of non-skbuff.h
references to the layer headers even more.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 32e8c3f73c79..57a326080757 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1325,7 +1325,7 @@ int ip6_push_pending_frames(struct sock *sk)
         if (skb->data < skb_network_header(skb))
                 __skb_pull(skb, skb_network_offset(skb));
         while ((tmp_skb = __skb_dequeue(&sk->sk_write_queue)) != NULL) {
-                __skb_pull(tmp_skb, skb->h.raw - skb->nh.raw);
+                __skb_pull(tmp_skb, skb_network_header_len(skb));
                 *tail_skb = tmp_skb;
                 tail_skb = &(tmp_skb->next);
                 skb->len += tmp_skb->len;
@@ -1337,7 +1337,7 @@ int ip6_push_pending_frames(struct sock *sk)
         }
 
         ipv6_addr_copy(final_dst, &fl->fl6_dst);
-        __skb_pull(skb, skb->h.raw - skb->nh.raw);
+        __skb_pull(skb, skb_network_header_len(skb));
         if (opt && opt->opt_flen)
                 ipv6_push_frag_opts(skb, opt, &proto);
         if (opt && opt->opt_nflen)