X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv4%2Fnetfilter%2Fipt_NETMAP.c;h=6739abfd1521d151e8da7577bf2c39bfdc2d29ff;hb=29111f579f4f3f2a07385f931854ab0527ae7ea5;hp=068c69bce30ee6ff306051b3c2236f4d60a3a2ad;hpb=ded1504dfa0083661fdd1a0a5f021cb7313ffe04;p=linux-2.6

diff --git a/net/ipv4/netfilter/ipt_NETMAP.c b/net/ipv4/netfilter/ipt_NETMAP.c
index 068c69bce3..6739abfd15 100644
--- a/net/ipv4/netfilter/ipt_NETMAP.c
+++ b/net/ipv4/netfilter/ipt_NETMAP.c
@@ -18,44 +18,32 @@
 #include <linux/netfilter/x_tables.h>
 #include <net/netfilter/nf_nat_rule.h>
 
-#define MODULENAME "NETMAP"
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Svenning Soerensen <svenning@post5.tele.dk>");
-MODULE_DESCRIPTION("iptables 1:1 NAT mapping of IP networks target");
+MODULE_DESCRIPTION("Xtables: 1:1 NAT mapping of IPv4 subnets");
 
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
-
-static int
-check(const char *tablename,
-      const void *e,
-      const struct xt_target *target,
-      void *targinfo,
-      unsigned int hook_mask)
+static bool
+netmap_tg_check(const char *tablename, const void *e,
+                const struct xt_target *target, void *targinfo,
+                unsigned int hook_mask)
 {
 	const struct nf_nat_multi_range_compat *mr = targinfo;
 
 	if (!(mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)) {
-		DEBUGP(MODULENAME":check: bad MAP_IPS.\n");
-		return 0;
+		pr_debug("NETMAP:check: bad MAP_IPS.\n");
+		return false;
 	}
 	if (mr->rangesize != 1) {
-		DEBUGP(MODULENAME":check: bad rangesize %u.\n", mr->rangesize);
-		return 0;
+		pr_debug("NETMAP:check: bad rangesize %u.\n", mr->rangesize);
+		return false;
 	}
-	return 1;
+	return true;
 }
 
 static unsigned int
-target(struct sk_buff **pskb,
-       const struct net_device *in,
-       const struct net_device *out,
-       unsigned int hooknum,
-       const struct xt_target *target,
-       const void *targinfo)
+netmap_tg(struct sk_buff *skb, const struct net_device *in,
+          const struct net_device *out, unsigned int hooknum,
+          const struct xt_target *target, const void *targinfo)
 {
 	struct nf_conn *ct;
 	enum ip_conntrack_info ctinfo;
@@ -63,17 +51,17 @@ target(struct sk_buff **pskb,
 	const struct nf_nat_multi_range_compat *mr = targinfo;
 	struct nf_nat_range newrange;
 
-	NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING
-		     || hooknum == NF_IP_POST_ROUTING
-		     || hooknum == NF_IP_LOCAL_OUT);
-	ct = nf_ct_get(*pskb, &ctinfo);
+	NF_CT_ASSERT(hooknum == NF_INET_PRE_ROUTING
+		     || hooknum == NF_INET_POST_ROUTING
+		     || hooknum == NF_INET_LOCAL_OUT);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	netmask = ~(mr->range[0].min_ip ^ mr->range[0].max_ip);
 
-	if (hooknum == NF_IP_PRE_ROUTING || hooknum == NF_IP_LOCAL_OUT)
-		new_ip = ip_hdr(*pskb)->daddr & ~netmask;
+	if (hooknum == NF_INET_PRE_ROUTING || hooknum == NF_INET_LOCAL_OUT)
+		new_ip = ip_hdr(skb)->daddr & ~netmask;
 	else
-		new_ip = ip_hdr(*pskb)->saddr & ~netmask;
+		new_ip = ip_hdr(skb)->saddr & ~netmask;
 	new_ip |= mr->range[0].min_ip & netmask;
 
 	newrange = ((struct nf_nat_range)
@@ -82,30 +70,31 @@ target(struct sk_buff **pskb,
 		  mr->range[0].min, mr->range[0].max });
 
 	/* Hand modified range to generic setup. */
-	return nf_nat_setup_info(ct, &newrange, hooknum);
+	return nf_nat_setup_info(ct, &newrange, HOOK2MANIP(hooknum));
 }
 
-static struct xt_target target_module = {
-	.name 		= MODULENAME,
+static struct xt_target netmap_tg_reg __read_mostly = {
+	.name 		= "NETMAP",
 	.family		= AF_INET,
-	.target 	= target,
+	.target 	= netmap_tg,
 	.targetsize	= sizeof(struct nf_nat_multi_range_compat),
 	.table		= "nat",
-	.hooks		= (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_POST_ROUTING) |
-			  (1 << NF_IP_LOCAL_OUT),
-	.checkentry 	= check,
+	.hooks		= (1 << NF_INET_PRE_ROUTING) |
+			  (1 << NF_INET_POST_ROUTING) |
+			  (1 << NF_INET_LOCAL_OUT),
+	.checkentry 	= netmap_tg_check,
 	.me 		= THIS_MODULE
 };
 
-static int __init ipt_netmap_init(void)
+static int __init netmap_tg_init(void)
 {
-	return xt_register_target(&target_module);
+	return xt_register_target(&netmap_tg_reg);
 }
 
-static void __exit ipt_netmap_fini(void)
+static void __exit netmap_tg_exit(void)
 {
-	xt_unregister_target(&target_module);
+	xt_unregister_target(&netmap_tg_reg);
 }
 
-module_init(ipt_netmap_init);
-module_exit(ipt_netmap_fini);
+module_init(netmap_tg_init);
+module_exit(netmap_tg_exit);