1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #ifndef _NETINET_IN6_H 29 #define _NETINET_IN6_H 30 31 #include <linux/in6.h> 32 33 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 34 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 35 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 36 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 37 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 38 39 #define IN6_IS_ADDR_LOOPBACK(a) \ 40 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 41 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 42 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 43 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1))) 44 45 #define IN6_IS_ADDR_V4COMPAT(a) \ 46 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 47 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 48 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 49 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 50 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 51 52 #define IN6_IS_ADDR_V4MAPPED(a) \ 53 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 54 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 55 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 56 57 #define IN6_IS_ADDR_LINKLOCAL(a) \ 58 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 59 60 #define IN6_IS_ADDR_SITELOCAL(a) \ 61 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 62 63 #define IN6_IS_ADDR_MULTICAST(a) \ 64 (((__const uint8_t *) (a))[0] == 0xff) 65 66 67 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 68 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01 69 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 70 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 71 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 72 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 73 74 #define IPV6_ADDR_MC_SCOPE(a) \ 75 ((a)->s6_addr[1] & 0x0f) 76 77 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 78 (IN6_IS_ADDR_MULTICAST(a) && \ 79 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 80 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 81 (IN6_IS_ADDR_MULTICAST(a) && \ 82 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 83 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 84 (IN6_IS_ADDR_MULTICAST(a) && \ 85 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 86 87 88 #define IN6_ARE_ADDR_EQUAL(a, b) \ 89 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 90 91 #define INET6_ADDRSTRLEN 46 92 93 #endif /* _NETINET_IN6_H */ 94