/* delete keymap entries */
void nf_ct_gre_keymap_destroy(struct nf_conn *ct);
-void nf_nat_need_gre(void);
-
#endif /* __KERNEL__ */
#endif /* _CONNTRACK_PROTO_GRE_H */
#ifndef _NF_NAT_L3PROTO_H
#define _NF_NAT_L3PROTO_H
-struct nf_nat_l4proto;
struct nf_nat_l3proto {
u8 l3proto;
bool (*manip_pkt)(struct sk_buff *skb,
unsigned int iphdroff,
- const struct nf_nat_l4proto *l4proto,
const struct nf_conntrack_tuple *target,
enum nf_nat_manip_type maniptype);
#include <net/netfilter/nf_nat.h>
#include <linux/netfilter/nfnetlink_conntrack.h>
-struct nf_nat_range;
struct nf_nat_l3proto;
-struct nf_nat_l4proto {
- /* Protocol number. */
- u8 l4proto;
-
-};
-
-/* Protocol registration. */
-int nf_nat_l4proto_register(u8 l3proto, const struct nf_nat_l4proto *l4proto);
-void nf_nat_l4proto_unregister(u8 l3proto,
- const struct nf_nat_l4proto *l4proto);
-
-const struct nf_nat_l4proto *__nf_nat_l4proto_find(u8 l3proto, u8 l4proto);
-
/* Translate a packet to the target according to manip type. Return on success. */
bool nf_nat_l4proto_manip_pkt(struct sk_buff *skb,
const struct nf_nat_l3proto *l3proto,
unsigned int iphdroff, unsigned int hdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype);
-
-/* Built-in protocols. */
-extern const struct nf_nat_l4proto nf_nat_l4proto_tcp;
-extern const struct nf_nat_l4proto nf_nat_l4proto_udp;
-extern const struct nf_nat_l4proto nf_nat_l4proto_icmp;
-extern const struct nf_nat_l4proto nf_nat_l4proto_icmpv6;
-extern const struct nf_nat_l4proto nf_nat_l4proto_unknown;
-#ifdef CONFIG_NF_NAT_PROTO_DCCP
-extern const struct nf_nat_l4proto nf_nat_l4proto_dccp;
-#endif
-#ifdef CONFIG_NF_NAT_PROTO_SCTP
-extern const struct nf_nat_l4proto nf_nat_l4proto_sctp;
-#endif
-#ifdef CONFIG_NF_NAT_PROTO_UDPLITE
-extern const struct nf_nat_l4proto nf_nat_l4proto_udplite;
-#endif
-
#endif /*_NF_NAT_L4PROTO_H*/
# Makefile for the netfilter modules on top of IPv4.
#
-nf_nat_ipv4-y := nf_nat_l3proto_ipv4.o nf_nat_proto_icmp.o
+nf_nat_ipv4-y := nf_nat_l3proto_ipv4.o
nf_nat_ipv4-$(CONFIG_NF_NAT_MASQUERADE_IPV4) += nf_nat_masquerade_ipv4.o
obj-$(CONFIG_NF_NAT_IPV4) += nf_nat_ipv4.o
$(obj)/nf_nat_snmp_basic_main.o: $(obj)/nf_nat_snmp_basic.asn1.h
obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
-# NAT protocols (nf_nat)
-obj-$(CONFIG_NF_NAT_PROTO_GRE) += nf_nat_proto_gre.o
-
obj-$(CONFIG_NFT_CHAIN_ROUTE_IPV4) += nft_chain_route_ipv4.o
obj-$(CONFIG_NFT_CHAIN_NAT_IPV4) += nft_chain_nat_ipv4.o
obj-$(CONFIG_NFT_REJECT_IPV4) += nft_reject_ipv4.o
static bool nf_nat_ipv4_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
- const struct nf_nat_l4proto *l4proto,
const struct nf_conntrack_tuple *target,
enum nf_nat_manip_type maniptype)
{
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
enum nf_nat_manip_type manip = HOOK2MANIP(hooknum);
unsigned int hdrlen = ip_hdrlen(skb);
- const struct nf_nat_l4proto *l4proto;
struct nf_conntrack_tuple target;
unsigned long statusbit;
if (!(ct->status & statusbit))
return 1;
- l4proto = __nf_nat_l4proto_find(NFPROTO_IPV4, inside->ip.protocol);
if (!nf_nat_ipv4_manip_pkt(skb, hdrlen + sizeof(inside->icmp),
- l4proto, &ct->tuplehash[!dir].tuple, !manip))
+ &ct->tuplehash[!dir].tuple, !manip))
return 0;
if (skb->ip_summed != CHECKSUM_PARTIAL) {
/* Change outer to look like the reply to an incoming packet */
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
- l4proto = __nf_nat_l4proto_find(NFPROTO_IPV4, 0);
- if (!nf_nat_ipv4_manip_pkt(skb, 0, l4proto, &target, manip))
+ if (!nf_nat_ipv4_manip_pkt(skb, 0, &target, manip))
return 0;
return 1;
static int __init nf_nat_l3proto_ipv4_init(void)
{
- int err;
-
- err = nf_nat_l4proto_register(NFPROTO_IPV4, &nf_nat_l4proto_icmp);
- if (err < 0)
- goto err1;
- err = nf_nat_l3proto_register(&nf_nat_l3proto_ipv4);
- if (err < 0)
- goto err2;
- return err;
-
-err2:
- nf_nat_l4proto_unregister(NFPROTO_IPV4, &nf_nat_l4proto_icmp);
-err1:
- return err;
+ return nf_nat_l3proto_register(&nf_nat_l3proto_ipv4);
}
static void __exit nf_nat_l3proto_ipv4_exit(void)
{
nf_nat_l3proto_unregister(&nf_nat_l3proto_ipv4);
- nf_nat_l4proto_unregister(NFPROTO_IPV4, &nf_nat_l4proto_icmp);
}
MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * nf_nat_proto_gre.c
- *
- * NAT protocol helper module for GRE.
- *
- * GRE is a generic encapsulation protocol, which is generally not very
- * suited for NAT, as it has no protocol-specific part as port numbers.
- *
- * It has an optional key field, which may help us distinguishing two
- * connections between the same two hosts.
- *
- * GRE is defined in RFC 1701 and RFC 1702, as well as RFC 2784
- *
- * PPTP is built on top of a modified version of GRE, and has a mandatory
- * field called "CallID", which serves us for the same purpose as the key
- * field in plain GRE.
- *
- * Documentation about PPTP can be found in RFC 2637
- *
- * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
- *
- * Development of this code funded by Astaro AG (http://www.astaro.com/)
- *
- * (C) 2006-2012 Patrick McHardy <kaber@trash.net>
- *
- */
-
-#include <linux/module.h>
-#include <linux/skbuff.h>
-#include <linux/ip.h>
-
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_l4proto.h>
-#include <linux/netfilter/nf_conntrack_proto_gre.h>
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
-MODULE_DESCRIPTION("Netfilter NAT protocol helper module for GRE");
-
-static const struct nf_nat_l4proto gre = {
- .l4proto = IPPROTO_GRE,
-};
-
-static int __init nf_nat_proto_gre_init(void)
-{
- return nf_nat_l4proto_register(NFPROTO_IPV4, &gre);
-}
-
-static void __exit nf_nat_proto_gre_fini(void)
-{
- nf_nat_l4proto_unregister(NFPROTO_IPV4, &gre);
-}
-
-module_init(nf_nat_proto_gre_init);
-module_exit(nf_nat_proto_gre_fini);
-
-void nf_nat_need_gre(void)
-{
- return;
-}
-EXPORT_SYMBOL_GPL(nf_nat_need_gre);
+++ /dev/null
-/* (C) 1999-2001 Paul `Rusty' Russell
- * (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
- * published by the Free Software Foundation.
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/export.h>
-#include <linux/ip.h>
-
-#include <linux/netfilter.h>
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_core.h>
-#include <net/netfilter/nf_nat_l4proto.h>
-
-const struct nf_nat_l4proto nf_nat_l4proto_icmp = {
- .l4proto = IPPROTO_ICMP,
-};
obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
obj-$(CONFIG_IP6_NF_NAT) += ip6table_nat.o
-nf_nat_ipv6-y := nf_nat_l3proto_ipv6.o nf_nat_proto_icmpv6.o
+nf_nat_ipv6-y := nf_nat_l3proto_ipv6.o
nf_nat_ipv6-$(CONFIG_NF_NAT_MASQUERADE_IPV6) += nf_nat_masquerade_ipv6.o
obj-$(CONFIG_NF_NAT_IPV6) += nf_nat_ipv6.o
static bool nf_nat_ipv6_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
- const struct nf_nat_l4proto *l4proto,
const struct nf_conntrack_tuple *target,
enum nf_nat_manip_type maniptype)
{
} *inside;
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
enum nf_nat_manip_type manip = HOOK2MANIP(hooknum);
- const struct nf_nat_l4proto *l4proto;
struct nf_conntrack_tuple target;
unsigned long statusbit;
if (!(ct->status & statusbit))
return 1;
- l4proto = __nf_nat_l4proto_find(NFPROTO_IPV6, inside->ip6.nexthdr);
if (!nf_nat_ipv6_manip_pkt(skb, hdrlen + sizeof(inside->icmp6),
- l4proto, &ct->tuplehash[!dir].tuple, !manip))
+ &ct->tuplehash[!dir].tuple, !manip))
return 0;
if (skb->ip_summed != CHECKSUM_PARTIAL) {
}
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
- l4proto = __nf_nat_l4proto_find(NFPROTO_IPV6, IPPROTO_ICMPV6);
- if (!nf_nat_ipv6_manip_pkt(skb, 0, l4proto, &target, manip))
+ if (!nf_nat_ipv6_manip_pkt(skb, 0, &target, manip))
return 0;
return 1;
static int __init nf_nat_l3proto_ipv6_init(void)
{
- int err;
-
- err = nf_nat_l4proto_register(NFPROTO_IPV6, &nf_nat_l4proto_icmpv6);
- if (err < 0)
- goto err1;
- err = nf_nat_l3proto_register(&nf_nat_l3proto_ipv6);
- if (err < 0)
- goto err2;
- return err;
-
-err2:
- nf_nat_l4proto_unregister(NFPROTO_IPV6, &nf_nat_l4proto_icmpv6);
-err1:
- return err;
+ return nf_nat_l3proto_register(&nf_nat_l3proto_ipv6);
}
static void __exit nf_nat_l3proto_ipv6_exit(void)
{
nf_nat_l3proto_unregister(&nf_nat_l3proto_ipv6);
- nf_nat_l4proto_unregister(NFPROTO_IPV6, &nf_nat_l4proto_icmpv6);
}
MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Copyright (c) 2011 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.
- *
- * Based on Rusty Russell's IPv4 ICMP NAT code. Development of IPv6
- * NAT funded by Astaro.
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/icmpv6.h>
-
-#include <linux/netfilter.h>
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_core.h>
-#include <net/netfilter/nf_nat_l3proto.h>
-#include <net/netfilter/nf_nat_l4proto.h>
-
-const struct nf_nat_l4proto nf_nat_l4proto_icmpv6 = {
- .l4proto = IPPROTO_ICMPV6,
-};
obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
-nf_nat-y := nf_nat_core.o nf_nat_proto_unknown.o \
- nf_nat_proto.o nf_nat_proto_tcp.o nf_nat_helper.o
-
-# NAT protocols (nf_nat)
-nf_nat-$(CONFIG_NF_NAT_PROTO_DCCP) += nf_nat_proto_dccp.o
-nf_nat-$(CONFIG_NF_NAT_PROTO_SCTP) += nf_nat_proto_sctp.o
+nf_nat-y := nf_nat_core.o nf_nat_proto.o nf_nat_helper.o
# generic transport layer logging
obj-$(CONFIG_NF_LOG_COMMON) += nf_log_common.o
#include <net/netfilter/nf_conntrack_synproxy.h>
#ifdef CONFIG_NF_NAT_NEEDED
#include <net/netfilter/nf_nat_core.h>
-#include <net/netfilter/nf_nat_l4proto.h>
#include <net/netfilter/nf_nat_helper.h>
#endif
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_l3proto.h>
-#include <net/netfilter/nf_nat_l4proto.h>
#include <net/netfilter/nf_nat_core.h>
#include <net/netfilter/nf_nat_helper.h>
#include <net/netfilter/nf_conntrack_helper.h>
static DEFINE_MUTEX(nf_nat_proto_mutex);
static const struct nf_nat_l3proto __rcu *nf_nat_l3protos[NFPROTO_NUMPROTO]
__read_mostly;
-static const struct nf_nat_l4proto __rcu **nf_nat_l4protos[NFPROTO_NUMPROTO]
- __read_mostly;
static unsigned int nat_net_id __read_mostly;
static struct hlist_head *nf_nat_bysource __read_mostly;
return rcu_dereference(nf_nat_l3protos[family]);
}
-inline const struct nf_nat_l4proto *
-__nf_nat_l4proto_find(u8 family, u8 protonum)
-{
- return rcu_dereference(nf_nat_l4protos[family][protonum]);
-}
-EXPORT_SYMBOL_GPL(__nf_nat_l4proto_find);
-
#ifdef CONFIG_XFRM
static void __nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl)
{
enum ip_conntrack_dir dir)
{
const struct nf_nat_l3proto *l3proto;
- const struct nf_nat_l4proto *l4proto;
struct nf_conntrack_tuple target;
/* We are aiming to look like inverse of other direction. */
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
l3proto = __nf_nat_l3proto_find(target.src.l3num);
- l4proto = __nf_nat_l4proto_find(target.src.l3num,
- target.dst.protonum);
- if (!l3proto->manip_pkt(skb, 0, l4proto, &target, mtype))
+ if (!l3proto->manip_pkt(skb, 0, &target, mtype))
return NF_DROP;
return NF_ACCEPT;
return 0;
}
-static void nf_nat_l4proto_clean(u8 l3proto, u8 l4proto)
-{
- struct nf_nat_proto_clean clean = {
- .l3proto = l3proto,
- .l4proto = l4proto,
- };
-
- nf_ct_iterate_destroy(nf_nat_proto_remove, &clean);
-}
-
static void nf_nat_l3proto_clean(u8 l3proto)
{
struct nf_nat_proto_clean clean = {
nf_ct_iterate_destroy(nf_nat_proto_remove, &clean);
}
-/* Protocol registration. */
-int nf_nat_l4proto_register(u8 l3proto, const struct nf_nat_l4proto *l4proto)
-{
- const struct nf_nat_l4proto **l4protos;
- unsigned int i;
- int ret = 0;
-
- mutex_lock(&nf_nat_proto_mutex);
- if (nf_nat_l4protos[l3proto] == NULL) {
- l4protos = kmalloc_array(IPPROTO_MAX,
- sizeof(struct nf_nat_l4proto *),
- GFP_KERNEL);
- if (l4protos == NULL) {
- ret = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < IPPROTO_MAX; i++)
- RCU_INIT_POINTER(l4protos[i], &nf_nat_l4proto_unknown);
-
- /* Before making proto_array visible to lockless readers,
- * we must make sure its content is committed to memory.
- */
- smp_wmb();
-
- nf_nat_l4protos[l3proto] = l4protos;
- }
-
- if (rcu_dereference_protected(
- nf_nat_l4protos[l3proto][l4proto->l4proto],
- lockdep_is_held(&nf_nat_proto_mutex)
- ) != &nf_nat_l4proto_unknown) {
- ret = -EBUSY;
- goto out;
- }
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto][l4proto->l4proto], l4proto);
- out:
- mutex_unlock(&nf_nat_proto_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(nf_nat_l4proto_register);
-
-/* No one stores the protocol anywhere; simply delete it. */
-void nf_nat_l4proto_unregister(u8 l3proto, const struct nf_nat_l4proto *l4proto)
-{
- mutex_lock(&nf_nat_proto_mutex);
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto][l4proto->l4proto],
- &nf_nat_l4proto_unknown);
- mutex_unlock(&nf_nat_proto_mutex);
- synchronize_rcu();
-
- nf_nat_l4proto_clean(l3proto, l4proto->l4proto);
-}
-EXPORT_SYMBOL_GPL(nf_nat_l4proto_unregister);
-
int nf_nat_l3proto_register(const struct nf_nat_l3proto *l3proto)
{
- mutex_lock(&nf_nat_proto_mutex);
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_TCP],
- &nf_nat_l4proto_tcp);
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_UDP],
- &nf_nat_l4proto_udp);
-#ifdef CONFIG_NF_NAT_PROTO_DCCP
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_DCCP],
- &nf_nat_l4proto_dccp);
-#endif
-#ifdef CONFIG_NF_NAT_PROTO_SCTP
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_SCTP],
- &nf_nat_l4proto_sctp);
-#endif
-#ifdef CONFIG_NF_NAT_PROTO_UDPLITE
- RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_UDPLITE],
- &nf_nat_l4proto_udplite);
-#endif
- mutex_unlock(&nf_nat_proto_mutex);
-
RCU_INIT_POINTER(nf_nat_l3protos[l3proto->l3proto], l3proto);
return 0;
}
static void __exit nf_nat_cleanup(void)
{
struct nf_nat_proto_clean clean = {};
- unsigned int i;
nf_ct_iterate_destroy(nf_nat_proto_clean, &clean);
nf_ct_helper_expectfn_unregister(&follow_master_nat);
RCU_INIT_POINTER(nf_nat_hook, NULL);
- synchronize_rcu();
-
- for (i = 0; i < NFPROTO_NUMPROTO; i++)
- kfree(nf_nat_l4protos[i]);
synchronize_net();
kvfree(nf_nat_bysource);
unregister_pernet_subsys(&nat_net_ops);
return true;
}
EXPORT_SYMBOL_GPL(nf_nat_l4proto_manip_pkt);
-
-#ifdef CONFIG_NF_NAT_PROTO_UDPLITE
-const struct nf_nat_l4proto nf_nat_l4proto_udplite = {
- .l4proto = IPPROTO_UDPLITE,
-};
-#endif /* CONFIG_NF_NAT_PROTO_UDPLITE */
-
-const struct nf_nat_l4proto nf_nat_l4proto_udp = {
- .l4proto = IPPROTO_UDP,
-};
+++ /dev/null
-/*
- * DCCP NAT protocol helper
- *
- * Copyright (c) 2005, 2006, 2008 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/skbuff.h>
-
-#include <net/netfilter/nf_conntrack.h>
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_l3proto.h>
-#include <net/netfilter/nf_nat_l4proto.h>
-
-const struct nf_nat_l4proto nf_nat_l4proto_dccp = {
- .l4proto = IPPROTO_DCCP,
-};
+++ /dev/null
-/*
- * Copyright (c) 2008 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/types.h>
-
-#include <net/netfilter/nf_nat_l4proto.h>
-
-
-const struct nf_nat_l4proto nf_nat_l4proto_sctp = {
- .l4proto = IPPROTO_SCTP,
-};
+++ /dev/null
-/* (C) 1999-2001 Paul `Rusty' Russell
- * (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
- * published by the Free Software Foundation.
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/export.h>
-#include <linux/tcp.h>
-
-#include <linux/netfilter.h>
-#include <linux/netfilter/nfnetlink_conntrack.h>
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_l3proto.h>
-#include <net/netfilter/nf_nat_l4proto.h>
-#include <net/netfilter/nf_nat_core.h>
-
-const struct nf_nat_l4proto nf_nat_l4proto_tcp = {
- .l4proto = IPPROTO_TCP,
-};
+++ /dev/null
-/* The "unknown" protocol. This is what is used for protocols we
- * don't understand. It's returned by ip_ct_find_proto().
- */
-
-/* (C) 1999-2001 Paul `Rusty' Russell
- * (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
- * published by the Free Software Foundation.
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-
-#include <linux/netfilter.h>
-#include <net/netfilter/nf_nat.h>
-#include <net/netfilter/nf_nat_l4proto.h>
-
-const struct nf_nat_l4proto nf_nat_l4proto_unknown = {
-};
projects / openwrt / staging / blogic.git / commitdiff