2 * Copyright (c) 2015-2018 Yandex LLC
3 * Copyright (c) 2015-2018 Andrey V. Elsukov <ae@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/rwlock.h>
38 #include <sys/socket.h>
39 #include <sys/sysctl.h>
44 #include <netinet/in.h>
45 #include <netinet/ip_var.h>
46 #include <netinet/ip_fw.h>
48 #include <netpfil/ipfw/ip_fw_private.h>
50 #include "ip_fw_nat64.h"
51 #include "nat64_translate.h"
53 VNET_DEFINE(int, nat64_debug) = 0;
55 SYSCTL_DECL(_net_inet_ip_fw);
56 SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, nat64_debug, CTLFLAG_VNET | CTLFLAG_RW,
57 &VNET_NAME(nat64_debug), 0, "Debug level for NAT64 module");
60 sysctl_direct_output(SYSCTL_HANDLER_ARGS)
65 value = nat64_get_output_method();
66 error = sysctl_handle_32(oidp, &value, 0, req);
67 /* Read operation or some error */
68 if ((error != 0) || (req->newptr == NULL))
70 nat64_set_output_method(value);
73 SYSCTL_PROC(_net_inet_ip_fw, OID_AUTO, nat64_direct_output,
74 CTLFLAG_VNET | CTLTYPE_U32 | CTLFLAG_RW, 0, 0, sysctl_direct_output, "IU",
75 "Use if_output directly instead of deffered netisr-based processing");
78 vnet_ipfw_nat64_init(const void *arg __unused)
80 struct ip_fw_chain *ch;
84 first = IS_DEFAULT_VNET(curvnet) ? 1: 0;
85 error = nat64stl_init(ch, first);
88 error = nat64lsn_init(ch, first);
90 nat64stl_uninit(ch, first);
97 vnet_ipfw_nat64_uninit(const void *arg __unused)
99 struct ip_fw_chain *ch;
102 ch = &V_layer3_chain;
103 last = IS_DEFAULT_VNET(curvnet) ? 1: 0;
104 nat64stl_uninit(ch, last);
105 nat64lsn_uninit(ch, last);
110 ipfw_nat64_modevent(module_t mod, int type, void *unused)
123 static moduledata_t ipfw_nat64_mod = {
129 /* Define startup order. */
130 #define IPFW_NAT64_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN
131 #define IPFW_NAT64_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */
132 #define IPFW_NAT64_MODULE_ORDER (IPFW_NAT64_MODEVENT_ORDER + 1)
133 #define IPFW_NAT64_VNET_ORDER (IPFW_NAT64_MODEVENT_ORDER + 2)
135 DECLARE_MODULE(ipfw_nat64, ipfw_nat64_mod, IPFW_NAT64_SI_SUB_FIREWALL,
137 MODULE_DEPEND(ipfw_nat64, ipfw, 3, 3, 3);
138 MODULE_VERSION(ipfw_nat64, 1);
140 VNET_SYSINIT(vnet_ipfw_nat64_init, IPFW_NAT64_SI_SUB_FIREWALL,
141 IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_init, NULL);
142 VNET_SYSUNINIT(vnet_ipfw_nat64_uninit, IPFW_NAT64_SI_SUB_FIREWALL,
143 IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_uninit, NULL);