1 /*-
2 * Copyright (c) 2016 Yandex LLC
3 * Copyright (c) 2016 Andrey V. Elsukov <ae@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
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.
15 *
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.
26 */
27
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/kernel.h>
31 #include <sys/lock.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
34 #include <sys/rwlock.h>
35 #include <sys/socket.h>
36
37 #include <net/if.h>
38 #include <net/vnet.h>
39
40 #include <netinet/in.h>
41 #include <netinet/ip_var.h>
42 #include <netinet/ip_fw.h>
43
44 #include <netpfil/ipfw/ip_fw_private.h>
45 #include <netpfil/ipfw/nptv6/nptv6.h>
46
47 static int
vnet_ipfw_nptv6_init(const void * arg __unused)48 vnet_ipfw_nptv6_init(const void *arg __unused)
49 {
50
51 return (nptv6_init(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)));
52 }
53
54 static int
vnet_ipfw_nptv6_uninit(const void * arg __unused)55 vnet_ipfw_nptv6_uninit(const void *arg __unused)
56 {
57
58 nptv6_uninit(&V_layer3_chain, IS_DEFAULT_VNET(curvnet));
59 return (0);
60 }
61
62 static int
ipfw_nptv6_modevent(module_t mod,int type,void * unused)63 ipfw_nptv6_modevent(module_t mod, int type, void *unused)
64 {
65
66 switch (type) {
67 case MOD_LOAD:
68 case MOD_UNLOAD:
69 break;
70 default:
71 return (EOPNOTSUPP);
72 }
73 return (0);
74 }
75
76 static moduledata_t ipfw_nptv6_mod = {
77 "ipfw_nptv6",
78 ipfw_nptv6_modevent,
79 0
80 };
81
82 /* Define startup order. */
83 #define IPFW_NPTV6_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN
84 #define IPFW_NPTV6_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */
85 #define IPFW_NPTV6_MODULE_ORDER (IPFW_NPTV6_MODEVENT_ORDER + 1)
86 #define IPFW_NPTV6_VNET_ORDER (IPFW_NPTV6_MODEVENT_ORDER + 2)
87
88 DECLARE_MODULE(ipfw_nptv6, ipfw_nptv6_mod, IPFW_NPTV6_SI_SUB_FIREWALL,
89 IPFW_NPTV6_MODULE_ORDER);
90 MODULE_DEPEND(ipfw_nptv6, ipfw, 3, 3, 3);
91 MODULE_VERSION(ipfw_nptv6, 1);
92
93 VNET_SYSINIT(vnet_ipfw_nptv6_init, IPFW_NPTV6_SI_SUB_FIREWALL,
94 IPFW_NPTV6_VNET_ORDER, vnet_ipfw_nptv6_init, NULL);
95 VNET_SYSUNINIT(vnet_ipfw_nptv6_uninit, IPFW_NPTV6_SI_SUB_FIREWALL,
96 IPFW_NPTV6_VNET_ORDER, vnet_ipfw_nptv6_uninit, NULL);
97