[NETFILTER]: Convert x_tables matches/targets to centralized error checking

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 17 deletions

diff --git a/net/netfilter/xt_length.c b/net/netfilter/xt_length.c
index 39c8faea63de..11a2812a99b1 100644
--- a/net/netfilter/xt_length.c
+++ b/net/netfilter/xt_length.c
@@ -50,29 +50,17 @@ match6(const struct sk_buff *skb,
 	return (pktlen >= info->min && pktlen <= info->max) ^ info->invert;
 }
 
-static int
-checkentry(const char *tablename,
-           const void *ip,
-           void *matchinfo,
-           unsigned int matchsize,
-           unsigned int hook_mask)
-{
-	if (matchsize != XT_ALIGN(sizeof(struct xt_length_info)))
-		return 0;
-
-	return 1;
-}
-
 static struct xt_match length_match = {
 	.name		= "length",
-	.match		= &match,
-	.checkentry	= &checkentry,
+	.match		= match,
+	.matchsize	= sizeof(struct xt_length_info),
 	.me		= THIS_MODULE,
 };
+
 static struct xt_match length6_match = {
 	.name		= "length",
-	.match		= &match6,
-	.checkentry	= &checkentry,
+	.match		= match6,
+	.matchsize	= sizeof(struct xt_length_info),
 	.me		= THIS_MODULE,
 };