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/* nhrp_defines.h - NHRP definitions
*
* Copyright (C) 2007 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 or later as
* published by the Free Software Foundation.
*
* See http://www.gnu.org/ for details.
*/
#ifndef NHRP_DEFINES_H
#define NHRP_DEFINES_H
#include <stdint.h>
#include <byteswap.h>
#include <sys/param.h>
#include <linux/version.h>
#ifndef NULL
#define NULL 0L
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef __bswap_constant_16
#define __bswap_constant_16(x) \
((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
#endif
#ifndef __bswap_constant_32
#define __bswap_constant_32(x) \
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
#endif
#if __BYTE_ORDER == __BIG_ENDIAN
#define constant_ntohl(x) (x)
#define constant_ntohs(x) (x)
#define constant_htonl(x) (x)
#define constant_htons(x) (x)
#else
#define constant_ntohl(x) __bswap_constant_32(x)
#define constant_ntohs(x) __bswap_constant_16(x)
#define constant_htonl(x) __bswap_constant_32(x)
#define constant_htons(x) __bswap_constant_16(x)
#endif
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
#endif
#ifndef offsetof
#ifdef __compiler_offsetof
#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
#else
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif
#endif
#define BIT(x) (1 << (x))
#ifndef container_of
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#endif
#if __GNUC__ >= 3
#define NHRP_EMPTY_ARRAY
#else
#define NHRP_EMPTY_ARRAY 0
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
#define NHRP_NO_NBMA_GRE
#endif
#define NHRP_DEFAULT_HOLDING_TIME (2 * 60 * 60)
#endif
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