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sys/netpfil/ipfw/nat64/nat64_translate.h
- This file was added.
| /*- | |||||
| * Copyright (c) 2015-2016 Yandex LLC | |||||
| * Copyright (c) 2015-2016 Andrey V. Elsukov <ae@FreeBSD.org> | |||||
| * All rights reserved. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |||||
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |||||
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |||||
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |||||
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |||||
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |||||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |||||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |||||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |||||
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||||
| */ | |||||
| #ifndef _IP_FW_NAT64_TRANSLATE_H_ | |||||
| #define _IP_FW_NAT64_TRANSLATE_H_ | |||||
| #ifdef RTALLOC_NOLOCK | |||||
| #define IN_LOOKUP_ROUTE(ro, fib) rtalloc_fib_nolock((ro), 0, (fib)) | |||||
| #define IN6_LOOKUP_ROUTE(ro, fib) in6_rtalloc_nolock((ro), (fib)) | |||||
| #define FREE_ROUTE(ro) | |||||
| #else | |||||
| #define IN_LOOKUP_ROUTE(ro, fib) rtalloc_ign_fib((ro), 0, (fib)) | |||||
| #define IN6_LOOKUP_ROUTE(ro, fib) in6_rtalloc((ro), (fib)) | |||||
| #define FREE_ROUTE(ro) RO_RTFREE((ro)) | |||||
| #endif | |||||
| static inline int | |||||
| nat64_check_ip6(struct in6_addr *addr) | |||||
| { | |||||
| /* XXX: We should really check /8 */ | |||||
| if (addr->s6_addr16[0] == 0 || /* 0000::/8 Reserved by IETF */ | |||||
| IN6_IS_ADDR_MULTICAST(addr) || IN6_IS_ADDR_LINKLOCAL(addr)) | |||||
| return (1); | |||||
| return (0); | |||||
| } | |||||
| static inline int | |||||
| nat64_check_private_ip4(in_addr_t ia) | |||||
| { | |||||
| /* WKPFX must not be used to represent non-global IPv4 addresses */ | |||||
| // if (cfg->flags & NAT64_WKPFX) { | |||||
| /* IN_PRIVATE */ | |||||
| if ((ia & htonl(0xff000000)) == htonl(0x0a000000) || | |||||
| (ia & htonl(0xfff00000)) == htonl(0xac100000) || | |||||
| (ia & htonl(0xffff0000)) == htonl(0xc0a80000)) | |||||
| return (1); | |||||
| /* | |||||
| * RFC 5735: | |||||
| * 192.0.0.0/24 - reserved for IETF protocol assignments | |||||
| * 192.88.99.0/24 - for use as 6to4 relay anycast addresses | |||||
| * 198.18.0.0/15 - for use in benchmark tests | |||||
| * 192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24 - for use | |||||
| * in documentation and example code | |||||
| */ | |||||
| if ((ia & htonl(0xffffff00)) == htonl(0xc0000000) || | |||||
| (ia & htonl(0xffffff00)) == htonl(0xc0586300) || | |||||
| (ia & htonl(0xfffffe00)) == htonl(0xc6120000) || | |||||
| (ia & htonl(0xffffff00)) == htonl(0xc0000200) || | |||||
| (ia & htonl(0xfffffe00)) == htonl(0xc6336400) || | |||||
| (ia & htonl(0xffffff00)) == htonl(0xcb007100)) | |||||
| return (1); | |||||
| // } | |||||
| return (0); | |||||
| } | |||||
| static inline int | |||||
| nat64_check_ip4(in_addr_t ia) | |||||
| { | |||||
| /* IN_LOOPBACK */ | |||||
| if ((ia & htonl(0xff000000)) == htonl(0x7f000000)) | |||||
| return (1); | |||||
| /* IN_LINKLOCAL */ | |||||
| if ((ia & htonl(0xffff0000)) == htonl(0xa9fe0000)) | |||||
| return (1); | |||||
| /* IN_MULTICAST & IN_EXPERIMENTAL */ | |||||
| if ((ia & htonl(0xe0000000)) == htonl(0xe0000000)) | |||||
| return (1); | |||||
| return (0); | |||||
| } | |||||
| #define nat64_get_ip4(_ip6) ((_ip6)->s6_addr32[3]) | |||||
| #define nat64_set_ip4(_ip6, _ip4) (_ip6)->s6_addr32[3] = (_ip4) | |||||
| int nat64_do_handle_ip4(struct mbuf *m, struct in6_addr *saddr, | |||||
| struct in6_addr *daddr, uint16_t lport, nat64_stats_block *stats); | |||||
| int nat64_do_handle_ip6(struct mbuf *m, uint32_t aaddr, uint16_t aport, | |||||
| nat64_stats_block *stats); | |||||
| int nat64_handle_icmp6(struct mbuf *m, int hlen, uint32_t aaddr, uint16_t aport, | |||||
| nat64_stats_block *stats); | |||||
| #endif | |||||