[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/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index db78303..933ee7a 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -303,16 +303,6 @@ config IP_NF_MATCH_HASHLIMIT
 	  destination IP' or `500pps from any given source IP'  with a single
 	  IPtables rule.
 
-config IP_NF_MATCH_POLICY
-       tristate "IPsec policy match support"
-       depends on IP_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.
-
 # `filter', generic and specific targets
 config IP_NF_FILTER
 	tristate "Packet filtering"
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index e5c5b32..3fe8092 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -57,7 +57,6 @@ obj-$(CONFIG_IP_NF_MATCH_DSCP) += ipt_dscp.o
 obj-$(CONFIG_IP_NF_MATCH_AH_ESP) += ipt_ah.o ipt_esp.o
 obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
 obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o
-obj-$(CONFIG_IP_NF_MATCH_POLICY) += ipt_policy.o
 
 # targets
 obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
diff --git a/net/ipv4/netfilter/ipt_policy.c b/net/ipv4/netfilter/ipt_policy.c
deleted file mode 100644
index b73f590..0000000
--- a/net/ipv4/netfilter/ipt_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_ipv4.h>
-#include <linux/netfilter_ipv4/ip_tables.h>
-#include <linux/netfilter_ipv4/ipt_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 ipt_policy_elem *e)
-{
-#define MATCH_ADDR(x,y,z)	(!e->match.x ||				     \
-		                 ((e->x.a4.s_addr == (e->y.a4.s_addr & (z))) \
-				  ^ e->invert.x))
-#define MATCH(x,y)		(!e->match.x || ((e->x == (y)) ^ e->invert.x))
-
-	return MATCH_ADDR(saddr, smask, x->props.saddr.a4) &&
-	       MATCH_ADDR(daddr, dmask, x->id.daddr.a4) &&
-	       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 ipt_policy_info *info)
-{
-	const struct ipt_policy_elem *e;
-	struct sec_path *sp = skb->sp;
-	int strict = info->flags & IPT_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 ipt_policy_info *info)
-{
-	const struct ipt_policy_elem *e;
-	struct dst_entry *dst = skb->dst;
-	int strict = info->flags & IPT_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 ipt_policy_info *info = matchinfo;
-	int ret;
-
-	if (info->flags & IPT_POLICY_MATCH_IN)
-		ret = match_policy_in(skb, info);
-	else
-		ret = match_policy_out(skb, info);
-
-	if (ret < 0)
-		ret = info->flags & IPT_POLICY_MATCH_NONE ? 1 : 0;
-	else if (info->flags & IPT_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 ipt_policy_info *info = matchinfo;
-
-	if (!(info->flags & (IPT_POLICY_MATCH_IN|IPT_POLICY_MATCH_OUT))) {
-		printk(KERN_ERR "ipt_policy: neither incoming nor "
-		                "outgoing policy selected\n");
-		return 0;
-	}
-	if (hook_mask & (1 << NF_IP_PRE_ROUTING | 1 << NF_IP_LOCAL_IN)
-	    && info->flags & IPT_POLICY_MATCH_OUT) {
-		printk(KERN_ERR "ipt_policy: output policy not valid in "
-		                "PRE_ROUTING and INPUT\n");
-		return 0;
-	}
-	if (hook_mask & (1 << NF_IP_POST_ROUTING | 1 << NF_IP_LOCAL_OUT)
-	    && info->flags & IPT_POLICY_MATCH_IN) {
-		printk(KERN_ERR "ipt_policy: input policy not valid in "
-		                "POST_ROUTING and OUTPUT\n");
-		return 0;
-	}
-	if (info->len > IPT_POLICY_MAX_ELEM) {
-		printk(KERN_ERR "ipt_policy: too many policy elements\n");
-		return 0;
-	}
-
-	return 1;
-}
-
-static struct ipt_match policy_match = {
-	.name		= "policy",
-	.match		= match,
-	.matchsize	= sizeof(struct ipt_policy_info),
-	.checkentry 	= checkentry,
-	.me		= THIS_MODULE,
-};
-
-static int __init init(void)
-{
-	return ipt_register_match(&policy_match);
-}
-
-static void __exit fini(void)
-{
-	ipt_unregister_match(&policy_match);
-}
-
-module_init(init);
-module_exit(fini);