utils.h

Adhoc无线网络路由协议源码

/* Some utility functions borrowed from utils.c of  NIST's kernel-AODV
* implementation by Luke Klein-Berndt.*/

#ifndef UTIL_H
#define UTIL_H

#include <time.h>
#include <sys/time.h>
#include <sys/types.h>

/*
 *
 *   Gets the current time in milliseconds since 1 jan 1970
 *
 *   Return:
 *     u_int64_t - On error -1 is returned otherwise the time.
 */
u_int64_t getcurrtime();

/*
 *  dot_ip() : converts ip address from int to dot.dot notation.
 *  is a wrapper around inet_ntoa so that you do not have to declare a, in_addr structure 
 *  
 *	 dot_ip can be called only once in one statement.
 *	 this is because dot_ip uses inet_ntoa which returns in a statically 
 *	 allocated buffer which is overwritten in each call.
 * hence you have to break up the printfs if there are multiple calls to dot_ip
 *
*/

char *
dot_ip(u_int32_t ipint);


/* This is a routine to do a 'mknod' on the /dev/tun<n> if possible:
 * Return: 0 is ok, -1=already open, etc.
 * 
 */
int mk_node(char *devname, int major, int minor);




#endif