[NETFILTER]: x_tables: replace IPv4/IPv6 policy match by address family independant version

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

3 files changed, 0 insertions, 185 deletions

diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig
index 2d6f8ec..98f7875 100644
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -133,16 +133,6 @@ config IP6_NF_MATCH_EUI64
 
 	  To compile it as a module, choose M here.  If unsure, say N.
 
-config IP6_NF_MATCH_POLICY
-	tristate "IPsec policy match support"
-	depends on IP6_NF_IPTABLES && XFRM
-	help
-	  Policy matching allows you to match packets based on the
-	  IPsec policy that was used during decapsulation/will
-	  be used during encapsulation.
-
-	  To compile it as a module, choose M here.  If unsure, say N.
-
 # The targets
 config IP6_NF_FILTER
 	tristate "Packet filtering"
diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile
index db6073c..8436a1a 100644
--- a/net/ipv6/netfilter/Makefile
+++ b/net/ipv6/netfilter/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_IP6_NF_MATCH_OPTS) += ip6t_hbh.o ip6t_dst.o
 obj-$(CONFIG_IP6_NF_MATCH_IPV6HEADER) += ip6t_ipv6header.o
 obj-$(CONFIG_IP6_NF_MATCH_FRAG) += ip6t_frag.o
 obj-$(CONFIG_IP6_NF_MATCH_AHESP) += ip6t_esp.o ip6t_ah.o
-obj-$(CONFIG_IP6_NF_MATCH_POLICY) += ip6t_policy.o
 obj-$(CONFIG_IP6_NF_MATCH_EUI64) += ip6t_eui64.o
 obj-$(CONFIG_IP6_NF_MATCH_MULTIPORT) += ip6t_multiport.o
 obj-$(CONFIG_IP6_NF_MATCH_OWNER) += ip6t_owner.o
diff --git a/net/ipv6/netfilter/ip6t_policy.c b/net/ipv6/netfilter/ip6t_policy.c
deleted file mode 100644
index f2a5997..0000000
--- a/net/ipv6/netfilter/ip6t_policy.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* IP tables module for matching IPsec policy
- *
- * Copyright (c) 2004,2005 Patrick McHardy, <kaber@trash.net>
- *
- * 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
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <net/xfrm.h>
-
-#include <linux/netfilter_ipv6.h>
-#include <linux/netfilter_ipv6/ip6_tables.h>
-#include <linux/netfilter_ipv6/ip6t_policy.h>
-
-MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_DESCRIPTION("IPtables IPsec policy matching module");
-MODULE_LICENSE("GPL");
-
-
-static inline int
-match_xfrm_state(struct xfrm_state *x, const struct ip6t_policy_elem *e)
-{
-#define MATCH_ADDR(x,y,z)	(!e->match.x ||				       \
-				 ((!ipv6_masked_addr_cmp(&e->x.a6, &e->y.a6,   \
-							 z))                   \
-				  ^ e->invert.x))
-#define MATCH(x,y)		(!e->match.x || ((e->x == (y)) ^ e->invert.x))
-	
-	return MATCH_ADDR(saddr, smask, (struct in6_addr *)&x->props.saddr.a6) &&
-	       MATCH_ADDR(daddr, dmask, (struct in6_addr *)&x->id.daddr.a6) &&
-	       MATCH(proto, x->id.proto) &&
-	       MATCH(mode, x->props.mode) &&
-	       MATCH(spi, x->id.spi) &&
-	       MATCH(reqid, x->props.reqid);
-}
-
-static int
-match_policy_in(const struct sk_buff *skb, const struct ip6t_policy_info *info)
-{
-	const struct ip6t_policy_elem *e;
-	struct sec_path *sp = skb->sp;
-	int strict = info->flags & IP6T_POLICY_MATCH_STRICT;
-	int i, pos;
-
-	if (sp == NULL)
-		return -1;
-	if (strict && info->len != sp->len)
-		return 0;
-
-	for (i = sp->len - 1; i >= 0; i--) {
-		pos = strict ? i - sp->len + 1 : 0;
-		if (pos >= info->len)
-			return 0;
-		e = &info->pol[pos];
-
-		if (match_xfrm_state(sp->x[i].xvec, e)) {
-			if (!strict)
-				return 1;
-		} else if (strict)
-			return 0;
-	}
-
-	return strict ? 1 : 0;
-}
-
-static int
-match_policy_out(const struct sk_buff *skb, const struct ip6t_policy_info *info)
-{
-	const struct ip6t_policy_elem *e;
-	struct dst_entry *dst = skb->dst;
-	int strict = info->flags & IP6T_POLICY_MATCH_STRICT;
-	int i, pos;
-
-	if (dst->xfrm == NULL)
-		return -1;
-
-	for (i = 0; dst && dst->xfrm; dst = dst->child, i++) {
-		pos = strict ? i : 0;
-		if (pos >= info->len)
-			return 0;
-		e = &info->pol[pos];
-
-		if (match_xfrm_state(dst->xfrm, e)) {
-			if (!strict)
-				return 1;
-		} else if (strict)
-			return 0;
-	}
-
-	return strict ? i == info->len : 0;
-}
-
-static int match(const struct sk_buff *skb,
-                 const struct net_device *in,
-                 const struct net_device *out,
-		 const struct xt_match *match,
-                 const void *matchinfo,
-		 int offset,
-		 unsigned int protoff,
-		 int *hotdrop)
-{
-	const struct ip6t_policy_info *info = matchinfo;
-	int ret;
-
-	if (info->flags & IP6T_POLICY_MATCH_IN)
-		ret = match_policy_in(skb, info);
-	else
-		ret = match_policy_out(skb, info);
-
-	if (ret < 0)
-		ret = info->flags & IP6T_POLICY_MATCH_NONE ? 1 : 0;
-	else if (info->flags & IP6T_POLICY_MATCH_NONE)
-		ret = 0;
-
-	return ret;
-}
-
-static int checkentry(const char *tablename, const void *ip_void,
-                      const struct xt_match *match, void *matchinfo,
-		      unsigned int matchsize, unsigned int hook_mask)
-{
-	struct ip6t_policy_info *info = matchinfo;
-
-	if (!(info->flags & (IP6T_POLICY_MATCH_IN|IP6T_POLICY_MATCH_OUT))) {
-		printk(KERN_ERR "ip6t_policy: neither incoming nor "
-		                "outgoing policy selected\n");
-		return 0;
-	}
-	if (hook_mask & (1 << NF_IP6_PRE_ROUTING | 1 << NF_IP6_LOCAL_IN)
-	    && info->flags & IP6T_POLICY_MATCH_OUT) {
-		printk(KERN_ERR "ip6t_policy: output policy not valid in "
-		                "PRE_ROUTING and INPUT\n");
-		return 0;
-	}
-	if (hook_mask & (1 << NF_IP6_POST_ROUTING | 1 << NF_IP6_LOCAL_OUT)
-	    && info->flags & IP6T_POLICY_MATCH_IN) {
-		printk(KERN_ERR "ip6t_policy: input policy not valid in "
-		                "POST_ROUTING and OUTPUT\n");
-		return 0;
-	}
-	if (info->len > IP6T_POLICY_MAX_ELEM) {
-		printk(KERN_ERR "ip6t_policy: too many policy elements\n");
-		return 0;
-	}
-
-	return 1;
-}
-
-static struct ip6t_match policy_match = {
-	.name		= "policy",
-	.match		= match,
-	.matchsize	= sizeof(struct ip6t_policy_info),
-	.checkentry 	= checkentry,
-	.me		= THIS_MODULE,
-};
-
-static int __init init(void)
-{
-	return ip6t_register_match(&policy_match);
-}
-
-static void __exit fini(void)
-{
-	ip6t_unregister_match(&policy_match);
-}
-
-module_init(init);
-module_exit(fini);