X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fipv4%2Fnetfilter%2Fipt_REDIRECT.c;h=462eceb3a1b16497bdbc5ca1831655434f932a2c;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=15232f5de56041c08e2ad4e3c92f9398fcbd0b37;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/net/ipv4/netfilter/ipt_REDIRECT.c b/net/ipv4/netfilter/ipt_REDIRECT.c
index 15232f5de..462eceb3a 100644
--- a/net/ipv4/netfilter/ipt_REDIRECT.c
+++ b/net/ipv4/netfilter/ipt_REDIRECT.c
@@ -1,6 +1,6 @@
 /* Redirect.  Simple mapping which alters dst to a local IP address. */
 /* (C) 1999-2001 Paul `Rusty' Russell
- * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
+ * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -18,7 +18,11 @@
 #include <net/protocol.h>
 #include <net/checksum.h>
 #include <linux/netfilter_ipv4.h>
+#ifdef CONFIG_NF_NAT_NEEDED
+#include <net/netfilter/nf_nat_rule.h>
+#else
 #include <linux/netfilter_ipv4/ip_nat_rule.h>
+#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
@@ -33,25 +37,13 @@ MODULE_DESCRIPTION("iptables REDIRECT target module");
 /* FIXME: Take multiple ranges --RR */
 static int
 redirect_check(const char *tablename,
-	       const struct ipt_entry *e,
+	       const void *e,
+	       const struct xt_target *target,
 	       void *targinfo,
-	       unsigned int targinfosize,
 	       unsigned int hook_mask)
 {
-	const struct ip_nat_multi_range *mr = targinfo;
+	const struct ip_nat_multi_range_compat *mr = targinfo;
 
-	if (strcmp(tablename, "nat") != 0) {
-		DEBUGP("redirect_check: bad table `%s'.\n", table);
-		return 0;
-	}
-	if (targinfosize != IPT_ALIGN(sizeof(*mr))) {
-		DEBUGP("redirect_check: size %u.\n", targinfosize);
-		return 0;
-	}
-	if (hook_mask & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT))) {
-		DEBUGP("redirect_check: bad hooks %x.\n", hook_mask);
-		return 0;
-	}
 	if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) {
 		DEBUGP("redirect_check: bad MAP_IPS.\n");
 		return 0;
@@ -68,14 +60,14 @@ redirect_target(struct sk_buff **pskb,
 		const struct net_device *in,
 		const struct net_device *out,
 		unsigned int hooknum,
-		const void *targinfo,
-		void *userinfo)
+		const struct xt_target *target,
+		const void *targinfo)
 {
 	struct ip_conntrack *ct;
 	enum ip_conntrack_info ctinfo;
-	u_int32_t newdst;
-	const struct ip_nat_multi_range *mr = targinfo;
-	struct ip_nat_multi_range newrange;
+	__be32 newdst;
+	const struct ip_nat_multi_range_compat *mr = targinfo;
+	struct ip_nat_range newrange;
 
 	IP_NF_ASSERT(hooknum == NF_IP_PRE_ROUTING
 		     || hooknum == NF_IP_LOCAL_OUT);
@@ -88,21 +80,25 @@ redirect_target(struct sk_buff **pskb,
 		newdst = htonl(0x7F000001);
 	else {
 		struct in_device *indev;
+		struct in_ifaddr *ifa;
 
-		/* Device might not have an associated in_device. */
-		indev = (struct in_device *)(*pskb)->dev->ip_ptr;
-		if (indev == NULL || indev->ifa_list == NULL)
-			return NF_DROP;
+		newdst = 0;
+		
+		rcu_read_lock();
+		indev = __in_dev_get_rcu((*pskb)->dev);
+		if (indev && (ifa = indev->ifa_list))
+			newdst = ifa->ifa_local;
+		rcu_read_unlock();
 
-		/* Grab first address on interface. */
-		newdst = indev->ifa_list->ifa_local;
+		if (!newdst)
+			return NF_DROP;
 	}
 
 	/* Transfer from original range. */
-	newrange = ((struct ip_nat_multi_range)
-		{ 1, { { mr->range[0].flags | IP_NAT_RANGE_MAP_IPS,
-			 newdst, newdst,
-			 mr->range[0].min, mr->range[0].max } } });
+	newrange = ((struct ip_nat_range)
+		{ mr->range[0].flags | IP_NAT_RANGE_MAP_IPS,
+		  newdst, newdst,
+		  mr->range[0].min, mr->range[0].max });
 
 	/* Hand modified range to generic setup. */
 	return ip_nat_setup_info(ct, &newrange, hooknum);
@@ -111,19 +107,22 @@ redirect_target(struct sk_buff **pskb,
 static struct ipt_target redirect_reg = {
 	.name		= "REDIRECT",
 	.target		= redirect_target,
+	.targetsize	= sizeof(struct ip_nat_multi_range_compat),
+	.table		= "nat",
+	.hooks		= (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT),
 	.checkentry	= redirect_check,
 	.me		= THIS_MODULE,
 };
 
-static int __init init(void)
+static int __init ipt_redirect_init(void)
 {
 	return ipt_register_target(&redirect_reg);
 }
 
-static void __exit fini(void)
+static void __exit ipt_redirect_fini(void)
 {
 	ipt_unregister_target(&redirect_reg);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(ipt_redirect_init);
+module_exit(ipt_redirect_fini);