[PATCH 3/7] ipt_TARPIT compile fix for 2.6.21

[Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>]

Fixes compilation of ipt_TARPIT.

Signed-off-by: Jan Engelhardt <jengelh@xxxxxx>

Index: linux-2.6.21-rc5/net/ipv4/netfilter/ipt_TARPIT.c
===================================================================
--- linux-2.6.21-rc5.orig/net/ipv4/netfilter/ipt_TARPIT.c
+++ linux-2.6.21-rc5/net/ipv4/netfilter/ipt_TARPIT.c
@@ -100,7 +100,7 @@ static void tarpit_tcp(struct sk_buff *o
 		return;
 
 	/* Check checksum. */
-	if (tcp_v4_check(otcph, otcplen, oskb->nh.iph->saddr,
+	if (tcp_v4_check(otcplen, oskb->nh.iph->saddr,
 			 oskb->nh.iph->daddr,
 			 csum_partial((char *)otcph, otcplen, 0)) != 0)
 		return;
@@ -158,7 +158,7 @@ static void tarpit_tcp(struct sk_buff *o
 
 	/* Adjust TCP checksum */
 	ntcph->check = 0;
-	ntcph->check = tcp_v4_check(ntcph, sizeof(struct tcphdr),
+	ntcph->check = tcp_v4_check(sizeof(struct tcphdr),
 				   nskb->nh.iph->saddr,
 				   nskb->nh.iph->daddr,
 				   csum_partial((char *)ntcph,
@@ -269,8 +269,9 @@ static int check(const char *tablename,
 	return 1;
 }
 
-static struct ipt_target ipt_tarpit_reg = {
+static struct xt_target ipt_tarpit_reg = {
 	.name = "TARPIT",
+	.family = AF_INET,
 	.target = tarpit,
 	.checkentry = check,
 	.me = THIS_MODULE
@@ -278,12 +279,12 @@ static struct ipt_target ipt_tarpit_reg 
 
 static int __init init(void)
 {
-	return ipt_register_target(&ipt_tarpit_reg);
+	return xt_register_target(&ipt_tarpit_reg);
 }
 
 static void __exit fini(void)
 {
-	ipt_unregister_target(&ipt_tarpit_reg);
+	xt_unregister_target(&ipt_tarpit_reg);
 }
 
 module_init(init);