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Edit File : ipv6.h \| Size : 2.57 KB
/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. / #ifndef LWRES_IPV6_H #define LWRES_IPV6_H 1 /** * Module Info **/ /! \file lwres/ipv6.h * IPv6 definitions for systems which do not support IPv6. / / * Imports. */ #include <inttypes.h> #include <lwres/platform.h> /* * Types. / /% in6_addr structure / struct in6_addr { union { uint8_t _S6_u8[16]; uint16_t _S6_u16[8]; uint32_t _S6_u32[4]; } _S6_un; }; /@{/ /% IP v6 types / #define s6_addr _S6_un._S6_u8 #define s6_addr8 _S6_un._S6_u8 #define s6_addr16 _S6_un._S6_u16 #define s6_addr32 _S6_un._S6_u32 /@}/ #define IN6ADDR_ANY_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}} #define IN6ADDR_LOOPBACK_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}} LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_any; LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback; /% used in getaddrinfo.c and getnameinfo.c / struct sockaddr_in6 { #ifdef LWRES_PLATFORM_HAVESALEN uint8_t sin6_len; uint8_t sin6_family; #else uint16_t sin6_family; #endif uint16_t sin6_port; uint32_t sin6_flowinfo; struct in6_addr sin6_addr; uint32_t sin6_scope_id; }; #ifdef LWRES_PLATFORM_HAVESALEN #define SIN6_LEN 1 #endif /% in6_pktinfo structure / struct in6_pktinfo { struct in6_addr ipi6_addr; /%< src/dst IPv6 address / unsigned int ipi6_ifindex; /%< send/recv interface index / }; /! * Unspecified IPv6 address / #define IN6_IS_ADDR_UNSPECIFIED(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == 0) && \ ((a)->s6_addr32[3] == 0)) / * Loopback / #define IN6_IS_ADDR_LOOPBACK(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == 0) && \ ((a)->s6_addr32[3] == htonl(1))) / * IPv4 compatible / #define IN6_IS_ADDR_V4COMPAT(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == 0) && \ ((a)->s6_addr32[3] != 0) && \ ((a)->s6_addr32[3] != htonl(1))) / * Mapped / #define IN6_IS_ADDR_V4MAPPED(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == htonl(0x0000ffff))) #endif / LWRES_IPV6_H */ Back

Edit File : ipv6.h | Size : 2.57 KB

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef LWRES_IPV6_H
#define LWRES_IPV6_H 1

/*****
 ***** Module Info
 *****/

/*! \file lwres/ipv6.h
 * IPv6 definitions for systems which do not support IPv6.
 */

/***
 *** Imports.
 ***/

#include <inttypes.h>

#include <lwres/platform.h>

/***
 *** Types.
 ***/

/*% in6_addr structure */
struct in6_addr {
	union {
		uint8_t	_S6_u8[16];
		uint16_t	_S6_u16[8];
		uint32_t	_S6_u32[4];
	} _S6_un;
};
/*@{*/
/*% IP v6 types */
#define s6_addr		_S6_un._S6_u8
#define s6_addr8	_S6_un._S6_u8
#define s6_addr16	_S6_un._S6_u16
#define s6_addr32	_S6_un._S6_u32
/*@}*/

#define IN6ADDR_ANY_INIT 	{{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}}
#define IN6ADDR_LOOPBACK_INIT 	{{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}}

LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_any;
LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback;

/*% used in getaddrinfo.c and getnameinfo.c */
struct sockaddr_in6 {
#ifdef LWRES_PLATFORM_HAVESALEN
	uint8_t		sin6_len;
	uint8_t		sin6_family;
#else
	uint16_t		sin6_family;
#endif
	uint16_t		sin6_port;
	uint32_t		sin6_flowinfo;
	struct in6_addr		sin6_addr;
	uint32_t		sin6_scope_id;
};

#ifdef LWRES_PLATFORM_HAVESALEN
#define SIN6_LEN 1
#endif

/*% in6_pktinfo structure */
struct in6_pktinfo {
	struct in6_addr ipi6_addr;    /*%< src/dst IPv6 address */
	unsigned int    ipi6_ifindex; /*%< send/recv interface index */
};

/*!
 * Unspecified IPv6 address
 */
#define IN6_IS_ADDR_UNSPECIFIED(a)      \
	(((a)->s6_addr32[0] == 0) &&    \
	 ((a)->s6_addr32[1] == 0) &&    \
	 ((a)->s6_addr32[2] == 0) &&    \
	 ((a)->s6_addr32[3] == 0))

/*
 * Loopback
 */
#define IN6_IS_ADDR_LOOPBACK(a)         \
	(((a)->s6_addr32[0] == 0) &&    \
	 ((a)->s6_addr32[1] == 0) &&    \
	 ((a)->s6_addr32[2] == 0) &&    \
	 ((a)->s6_addr32[3] == htonl(1)))

/*
 * IPv4 compatible
 */
#define IN6_IS_ADDR_V4COMPAT(a)         \
	(((a)->s6_addr32[0] == 0) &&    \
	 ((a)->s6_addr32[1] == 0) &&    \
	 ((a)->s6_addr32[2] == 0) &&    \
	 ((a)->s6_addr32[3] != 0) &&    \
	 ((a)->s6_addr32[3] != htonl(1)))

/*
 * Mapped
 */
#define IN6_IS_ADDR_V4MAPPED(a)               \
	(((a)->s6_addr32[0] == 0) &&          \
	 ((a)->s6_addr32[1] == 0) &&          \
	 ((a)->s6_addr32[2] == htonl(0x0000ffff)))

#endif /* LWRES_IPV6_H */

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