1 | /* |
2 | * Copyright (c) 2018 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | /* |
30 | * Copyright (c) 2001 Daniel Hartmeier |
31 | * Copyright (c) 2002 - 2013 Henning Brauer |
32 | * NAT64 - Copyright (c) 2010 Viagenie Inc. (http://www.viagenie.ca) |
33 | * All rights reserved. |
34 | * |
35 | * Redistribution and use in source and binary forms, with or without |
36 | * modification, are permitted provided that the following conditions |
37 | * are met: |
38 | * |
39 | * - Redistributions of source code must retain the above copyright |
40 | * notice, this list of conditions and the following disclaimer. |
41 | * - Redistributions in binary form must reproduce the above |
42 | * copyright notice, this list of conditions and the following |
43 | * disclaimer in the documentation and/or other materials provided |
44 | * with the distribution. |
45 | * |
46 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
47 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
48 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
49 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
50 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
51 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
52 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
53 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
54 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
55 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
56 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
57 | * POSSIBILITY OF SUCH DAMAGE. |
58 | * |
59 | * Effort sponsored in part by the Defense Advanced Research Projects |
60 | * Agency (DARPA) and Air Force Research Laboratory, Air Force |
61 | * Materiel Command, USAF, under agreement number F30602-01-2-0537. |
62 | * |
63 | */ |
64 | #ifndef _NET_NAT464_UTILS_H_ |
65 | #define _NET_NAT464_UTILS_H_ |
66 | #include <netinet/in.h> |
67 | #include <net/pf_pbuf.h> |
68 | |
69 | #define clat_log0(x) do { log x; } while (0) |
70 | #define clat_log1(x) do { if (clat_debug >= 1) log x; } while (0) |
71 | #define clat_log2(x) do { if (clat_debug >= 2) log x; } while (0) |
72 | |
73 | #define CLAT46_NEEDED(x) \ |
74 | (!IN_LOOPBACK(x) && !IN_LINKLOCAL(x) && !IN_MULTICAST(x) && \ |
75 | INADDR_BROADCAST != x) |
76 | |
77 | #define CLAT64_NEEDED(x) \ |
78 | (!IN6_IS_ADDR_LOOPBACK(x) && !IN6_IS_ADDR_LINKLOCAL(x) && \ |
79 | !IN6_IS_ADDR_MULTICAST(x)) |
80 | |
81 | extern int clat_debug; |
82 | |
83 | enum { NT_DROP, NT_NAT64 }; |
84 | enum { NT_IN, NT_OUT }; |
85 | struct nat464_addr { |
86 | union { |
87 | struct in_addr _v4addr; |
88 | struct in6_addr _v6addr; |
89 | uint8_t _addr8[16]; |
90 | uint16_t _addr16[8]; |
91 | uint32_t _addr32[4]; |
92 | } nat464a; /* 128-bit address */ |
93 | #define natv4addr nat464a._v4addr |
94 | #define natv6addr nat464a._v6addr |
95 | #define nataddr8 nat464a._addr8 |
96 | #define nataddr16 nat464a._addr16 |
97 | #define nataddr32 nat464a._addr32 |
98 | }; |
99 | |
100 | int |
101 | nat464_translate_icmp(int, void *); |
102 | |
103 | int |
104 | nat464_translate_icmp_ip(pbuf_t *, uint16_t, uint16_t *, uint16_t *, |
105 | uint8_t, uint8_t, uint16_t, struct nat464_addr *, |
106 | struct nat464_addr *, protocol_family_t, protocol_family_t ); |
107 | |
108 | int |
109 | nat464_synthesize_ipv6(ifnet_t, const struct in_addr *, struct in6_addr *); |
110 | |
111 | int |
112 | nat464_synthesize_ipv4(ifnet_t, const struct in6_addr *, struct in_addr *); |
113 | |
114 | int |
115 | nat464_translate_64(pbuf_t *, int, uint8_t, uint8_t *, uint8_t, struct in_addr, |
116 | struct in_addr, uint64_t, boolean_t *); |
117 | |
118 | int |
119 | nat464_translate_46(pbuf_t *, uint16_t, uint8_t, uint8_t, uint8_t, struct in6_addr, |
120 | struct in6_addr, uint16_t); |
121 | |
122 | int |
123 | nat464_translate_proto(pbuf_t *, struct nat464_addr *, struct nat464_addr *, |
124 | uint8_t, protocol_family_t, protocol_family_t, int, boolean_t); |
125 | |
126 | int |
127 | nat464_insert_frag46(pbuf_t *, uint16_t, uint16_t, boolean_t); |
128 | |
129 | int |
130 | nat464_remove_frag64(pbuf_t *, uint32_t, uint16_t, boolean_t); |
131 | |
132 | uint16_t |
133 | nat464_cksum_fixup(uint16_t, uint16_t, uint16_t, uint8_t); |
134 | #endif /* !_NET_NAT464_UTILS_H_ */ |
135 | |