2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2015-2019 Yandex LLC
5 * Copyright (c) 2015-2019 Andrey V. Elsukov <ae@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
38 #include <sys/rwlock.h>
39 #include <sys/socket.h>
40 #include <sys/sysctl.h>
45 #include <netinet/in.h>
46 #include <netinet/ip_var.h>
47 #include <netinet/ip_fw.h>
49 #include <netpfil/ipfw/ip_fw_private.h>
51 #include "ip_fw_nat64.h"
52 #include "nat64_translate.h"
54 VNET_DEFINE(int, nat64_debug) = 0;
56 SYSCTL_DECL(_net_inet_ip_fw);
57 SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, nat64_debug, CTLFLAG_VNET | CTLFLAG_RW,
58 &VNET_NAME(nat64_debug), 0, "Debug level for NAT64 module");
61 sysctl_direct_output(SYSCTL_HANDLER_ARGS)
66 value = nat64_get_output_method();
67 error = sysctl_handle_32(oidp, &value, 0, req);
68 /* Read operation or some error */
69 if ((error != 0) || (req->newptr == NULL))
71 nat64_set_output_method(value);
74 SYSCTL_PROC(_net_inet_ip_fw, OID_AUTO, nat64_direct_output,
75 CTLFLAG_VNET | CTLTYPE_U32 | CTLFLAG_RW, 0, 0, sysctl_direct_output, "IU",
76 "Use if_output directly instead of deffered netisr-based processing");
79 vnet_ipfw_nat64_init(const void *arg __unused)
81 struct ip_fw_chain *ch;
85 first = IS_DEFAULT_VNET(curvnet) ? 1: 0;
86 error = nat64stl_init(ch, first);
89 error = nat64clat_init(ch, first);
91 nat64stl_uninit(ch, first);
94 error = nat64lsn_init(ch, first);
96 nat64stl_uninit(ch, first);
97 nat64clat_uninit(ch, first);
104 vnet_ipfw_nat64_uninit(const void *arg __unused)
106 struct ip_fw_chain *ch;
109 ch = &V_layer3_chain;
110 last = IS_DEFAULT_VNET(curvnet) ? 1: 0;
111 nat64stl_uninit(ch, last);
112 nat64clat_uninit(ch, last);
113 nat64lsn_uninit(ch, last);
118 ipfw_nat64_modevent(module_t mod, int type, void *unused)
131 static moduledata_t ipfw_nat64_mod = {
137 /* Define startup order. */
138 #define IPFW_NAT64_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN
139 #define IPFW_NAT64_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */
140 #define IPFW_NAT64_MODULE_ORDER (IPFW_NAT64_MODEVENT_ORDER + 1)
141 #define IPFW_NAT64_VNET_ORDER (IPFW_NAT64_MODEVENT_ORDER + 2)
143 DECLARE_MODULE(ipfw_nat64, ipfw_nat64_mod, IPFW_NAT64_SI_SUB_FIREWALL,
145 MODULE_DEPEND(ipfw_nat64, ipfw, 3, 3, 3);
146 MODULE_VERSION(ipfw_nat64, 1);
148 VNET_SYSINIT(vnet_ipfw_nat64_init, IPFW_NAT64_SI_SUB_FIREWALL,
149 IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_init, NULL);
150 VNET_SYSUNINIT(vnet_ipfw_nat64_uninit, IPFW_NAT64_SI_SUB_FIREWALL,
151 IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_uninit, NULL);