commit b529ccf2799c14346d1518e9bdf1f88f03643e99
author Arnaldo Carvalho de Melo <acme@redhat.com> Wed Apr 25 19:08:35 2007 -0700
committer David S. Miller <davem@sunset.davemloft.net> Wed Apr 25 22:26:34 2007 -0700
tree f899a5a5d66d2ca21724c1871ee3afeda6c4a670
parent 965ffea43d4ebe8cd7b9fee78d651268dd7d23c5

[NETLINK]: Introduce nlmsg_hdr() helper

For the common "(struct nlmsghdr *)skb->data" sequence, so that we reduce the
number of direct accesses to skb->data and for consistency with all the other
cast skb member helpers.

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

net/ipv4/fib_frontend.c

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index cac06c4..3ff753c 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -807,7 +807,7 @@
 	if (skb == NULL)
 		return;
 
-	nlh = (struct nlmsghdr *)skb->data;
+	nlh = nlmsg_hdr(skb);
 	if (skb->len < NLMSG_SPACE(0) || skb->len < nlh->nlmsg_len ||
 	    nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*frn))) {
 		kfree_skb(skb);