netfilter: nf_nat: support IPv6 in IRC NAT helper

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>

3 files changed, 0 insertions, 105 deletions

diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index 30197f8003be..843fe17db20d 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -221,11 +221,6 @@ config NF_NAT_PROTO_GRE
 	tristate
 	depends on NF_NAT_IPV4 && NF_CT_PROTO_GRE
 
-config NF_NAT_IRC
-	tristate
-	depends on NF_CONNTRACK && NF_NAT_IPV4
-	default NF_NAT_IPV4 && NF_CONNTRACK_IRC
-
 config NF_NAT_TFTP
 	tristate
 	depends on NF_CONNTRACK && NF_NAT_IPV4
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index 8914abffc96d..17e649bb98ba 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -21,7 +21,6 @@ obj-$(CONFIG_NF_DEFRAG_IPV4) += nf_defrag_ipv4.o
 
 # NAT helpers (nf_conntrack)
 obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
-obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
 obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o
 obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 obj-$(CONFIG_NF_NAT_TFTP) += nf_nat_tftp.o
diff --git a/net/ipv4/netfilter/nf_nat_irc.c b/net/ipv4/netfilter/nf_nat_irc.c
deleted file mode 100644
index 1ce37f89ec78..000000000000
--- a/net/ipv4/netfilter/nf_nat_irc.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/* IRC extension for TCP NAT alteration.
- *
- * (C) 2000-2001 by Harald Welte <laforge@gnumonks.org>
- * (C) 2004 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation
- * based on a copy of RR's ip_nat_ftp.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/tcp.h>
-#include <linux/kernel.h>
-
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_helper.h>
-#include <net/netfilter/nf_conntrack_helper.h>
-#include <net/netfilter/nf_conntrack_expect.h>
-#include <linux/netfilter/nf_conntrack_irc.h>
-
-MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
-MODULE_DESCRIPTION("IRC (DCC) NAT helper");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("ip_nat_irc");
-
-static unsigned int help(struct sk_buff *skb,
-			 enum ip_conntrack_info ctinfo,
-			 unsigned int protoff,
-			 unsigned int matchoff,
-			 unsigned int matchlen,
-			 struct nf_conntrack_expect *exp)
-{
-	char buffer[sizeof("4294967296 65635")];
-	u_int32_t ip;
-	u_int16_t port;
-	unsigned int ret;
-
-	/* Reply comes from server. */
-	exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
-	exp->dir = IP_CT_DIR_REPLY;
-	exp->expectfn = nf_nat_follow_master;
-
-	/* Try to get same port: if not, try to change it. */
-	for (port = ntohs(exp->saved_proto.tcp.port); port != 0; port++) {
-		int ret;
-
-		exp->tuple.dst.u.tcp.port = htons(port);
-		ret = nf_ct_expect_related(exp);
-		if (ret == 0)
-			break;
-		else if (ret != -EBUSY) {
-			port = 0;
-			break;
-		}
-	}
-
-	if (port == 0)
-		return NF_DROP;
-
-	ip = ntohl(exp->master->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip);
-	sprintf(buffer, "%u %u", ip, port);
-	pr_debug("nf_nat_irc: inserting '%s' == %pI4, port %u\n",
-		 buffer, &ip, port);
-
-	ret = nf_nat_mangle_tcp_packet(skb, exp->master, ctinfo,
-				       protoff, matchoff, matchlen, buffer,
-				       strlen(buffer));
-	if (ret != NF_ACCEPT)
-		nf_ct_unexpect_related(exp);
-	return ret;
-}
-
-static void __exit nf_nat_irc_fini(void)
-{
-	RCU_INIT_POINTER(nf_nat_irc_hook, NULL);
-	synchronize_rcu();
-}
-
-static int __init nf_nat_irc_init(void)
-{
-	BUG_ON(nf_nat_irc_hook != NULL);
-	RCU_INIT_POINTER(nf_nat_irc_hook, help);
-	return 0;
-}
-
-/* Prior to 2.6.11, we had a ports param.  No longer, but don't break users. */
-static int warn_set(const char *val, struct kernel_param *kp)
-{
-	printk(KERN_INFO KBUILD_MODNAME
-	       ": kernel >= 2.6.10 only uses 'ports' for conntrack modules\n");
-	return 0;
-}
-module_param_call(ports, warn_set, NULL, NULL, 0);
-
-module_init(nf_nat_irc_init);
-module_exit(nf_nat_irc_fini);