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      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 /* RFC 4193. */
     64 #define IN6_IS_ADDR_ULA(a)	\
     65 	(((a)->s6_addr[0] & 0xfe) == 0xfc)
     66 
     67 #define IN6_IS_ADDR_MULTICAST(a)	\
     68 	(((__const uint8_t *) (a))[0] == 0xff)
     69 
     70 
     71 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
     72 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
     73 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
     74 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
     75 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08
     76 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
     77 
     78 #define IPV6_ADDR_MC_SCOPE(a)	\
     79 	((a)->s6_addr[1] & 0x0f)
     80 
     81 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
     82 	(IN6_IS_ADDR_MULTICAST(a) &&  \
     83 	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
     84 #define IN6_IS_ADDR_MC_LINKLOCAL(a)	\
     85 	(IN6_IS_ADDR_MULTICAST(a) &&  \
     86 	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
     87 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
     88 	(IN6_IS_ADDR_MULTICAST(a) &&  \
     89 	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
     90 #define IN6_IS_ADDR_MC_ORGLOCAL(a)     \
     91 	(IN6_IS_ADDR_MULTICAST(a) &&  \
     92 	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
     93 #define IN6_IS_ADDR_MC_GLOBAL(a)       \
     94 	(IN6_IS_ADDR_MULTICAST(a) &&  \
     95 	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
     96 
     97 #define IN6_ARE_ADDR_EQUAL(a, b)			\
     98     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
     99 
    100 #define INET6_ADDRSTRLEN 46
    101 
    102 #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP
    103 #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP
    104 
    105 #define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}}
    106 #define IN6ADDR_LOOPBACK_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}}}
    107 
    108 #define ipv6mr_interface ipv6mr_ifindex
    109 
    110 
    111 #endif /* _NETINET_IN6_H */
    112