defs.h

wifi 无线网络路由协议OLSR linux下C代码

/*
 * The olsr.org Optimized Link-State Routing daemon(olsrd)
 * Copyright (c) 2004, Andreas T鴑nesen([e-mail])
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met:
 *
 * * Redistributions of source code must retain the above copyright 
 *   notice, this list of conditions and the following disclaimer.
 * * 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.
 * * Neither the name of olsr.org, olsrd nor the names of its 
 *   contributors may be used to endorse or promote products derived 
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "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 
 * COPYRIGHT OWNER OR CONTRIBUTORS 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.
 *
 * Visit http://www.olsr.org for more information.
 *
 * If you find this software useful feel free to make a donation
 * to the project. For more information see the website or contact
 * the copyright holders.
 *
 * $Id: defs.h,v 1.64 2007/10/13 12:31:04 bernd67 Exp $
 */


#ifndef _OLSR_DEFS
#define _OLSR_DEFS

/* Common includes */
#include <sys/time.h>
#include <sys/times.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>

#include "olsr_protocol.h"
#include "net_olsr.h" /* IPaddr -> string conversions is used by everyone */
#include "olsr_cfg.h"

extern const char olsrd_version[];
extern const char build_date[]; 
extern const char build_host[];

#ifndef OLSRD_GLOBAL_CONF_FILE
#define OLSRD_CONF_FILE_NAME	"olsrd.conf"
#define OLSRD_GLOBAL_CONF_FILE	"/etc/" OLSRD_CONF_FILE_NAME
#endif

#define	MAXMESSAGESIZE		1500	/* max broadcast size */
#define UDP_IPV4_HDRSIZE        28
#define UDP_IPV6_HDRSIZE        62

#define MIN_PACKET_SIZE(ver)	((int)(sizeof(olsr_u8_t) * (((ver) == AF_INET) ? 4 : 7)))

/* Debug helper macro */
#ifdef DEBUG
#define olsr_debug(lvl, format, args...) do {                           \
    OLSR_PRINTF(lvl, "%s (%s:%d): ", __func__, __FILE__, __LINE__);     \
    OLSR_PRINTF(lvl, (format), ##args);                                 \
  } while (0)
#endif

extern FILE *debug_handle;

#ifdef NODEBUG
#define OLSR_PRINTF(lvl, format, args...) do { } while(0)
#else
#define OLSR_PRINTF(lvl, format, args...) do {                  \
    if((olsr_cnf->debug_level >= (lvl)) && debug_handle)          \
      fprintf(debug_handle, (format), ##args);                    \
  } while (0)
#endif

/* Provides a timestamp s1 milliseconds in the future
   according to system ticks returned by times(2) */
#define GET_TIMESTAMP(s1)	(now_times + ((s1) / olsr_cnf->system_tick_divider))

#define TIMED_OUT(s1)	((int)((s1) - now_times) < 0)


#define ARRAYSIZE(x)	(sizeof(x)/sizeof(*(x)))

/*
 * Queueing macros
 */

/* First "argument" is NOT a pointer! */

#define QUEUE_ELEM(pre, new) do { \
    (pre).next->prev = (new);         \
    (new)->next = (pre).next;         \
    (new)->prev = &(pre);             \
    (pre).next = (new);               \
  } while (0)

#define DEQUEUE_ELEM(elem) do { \
    (elem)->prev->next = (elem)->next;     \
    (elem)->next->prev = (elem)->prev;     \
  } while (0)


#define CLOSE(fd)  do { close(fd); (fd) = -1; } while (0)

/*
 * Global olsrd configuragtion
 */

extern struct olsrd_config *olsr_cnf;

/* Timer data */
extern clock_t now_times;              /* current idea of times(2) reported uptime */
extern struct timeval now;	       /* current idea of time */
extern struct tm *nowtm;	       /* current idea of time (in tm) */

#if defined WIN32
extern olsr_bool olsr_win32_end_request;
extern olsr_bool olsr_win32_end_flag;
#endif

/*
 *IPC functions
 *These are moved to a plugin soon
 * soon... duh!
 */

int
ipc_init(void);

#if 0
int
ipc_input(int);
#endif

int
shutdown_ipc(void);

int
ipc_output(struct olsr *);

#endif