[NET]: Use BUILD_BUG_ON() for checking size of skb->cb.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 4 deletions

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index a80e4456e204..d56e0d21f919 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1762,8 +1762,6 @@ static struct net_proto_family netlink_family_ops = {
         .owner  = THIS_MODULE,  /* for consistency 8) */
 };
 
-extern void netlink_skb_parms_too_large(void);
-
 static int __init netlink_proto_init(void)
 {
         struct sk_buff *dummy_skb;
@@ -1775,8 +1773,7 @@ static int __init netlink_proto_init(void)
         if (err != 0)
                 goto out;
 
-        if (sizeof(struct netlink_skb_parms) > sizeof(dummy_skb->cb))
-                netlink_skb_parms_too_large();
+        BUILD_BUG_ON(sizeof(struct netlink_skb_parms) > sizeof(dummy_skb->cb));
 
         nl_table = kcalloc(MAX_LINKS, sizeof(*nl_table), GFP_KERNEL);
         if (!nl_table)