[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, 1 insertions, 1 deletions

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 07e86ebb46b8..4c45bcce75e8 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1168,7 +1168,7 @@ int igmp6_event_query(struct sk_buff *skb)
 
         /* compute payload length excluding extension headers */
         len = ntohs(ipv6_hdr(skb)->payload_len) + sizeof(struct ipv6hdr);
-        len -= skb->h.raw - skb->nh.raw;
+        len -= skb_network_header_len(skb);
 
         /* Drop queries with not link local source */
         if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL))