eql_tools/eql_cfg.c

/*
 * eql_cfg
 *
 * modeled from eql_enslave.c by Simon Janes
 *
 * (c) Copyright 2001 Arnaud G. Gibert
 * Misys
 *
 * (c) Copyright 1995 Simon Janes
 * NCM: Network and Communications Management, Inc.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

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

#include <linux/sockios.h>
#include <linux/if.h>

#include "/usr/src/linux/include/linux/if_eql.h"





void check_running(char *device_name);

int s;

int
main(int argc, char **argv)
{
    struct ifreq ifr;
    master_config_t   master_config;
    slave_config_t slave_config;
    char master_name[16];
    int slave_mtu;
    int master_mtu;

    if ((argc < 2) || (argc > 4))
    {
	fprintf (stderr, "usage: %s <master> [<max slaves> <min slaves>]\n       %s <master> <slave> [<priority>]\n", argv[0],argv[0]);
	exit (1);
    }

    strcpy (master_name, argv[1]);

    s = socket (AF_INET, SOCK_DGRAM, 0);
    if ( s == -1)
    {
	perror ("socket");
	exit (1);
    }

    check_running (master_name);

    strcpy (ifr.ifr_name, master_name);

    switch( argc)
    {
	case 2:
	    ifr.ifr_data = (caddr_t) &master_config;
  
	    if(ioctl (s,EQL_GETMASTRCFG, &ifr)==-1)
	    {
		perror("EQL_GETMASTRCFG failed");
		exit (1);
	    }

	    printf( "%s\tmax slaves:%d min slaves:%d\n",master_name,master_config.max_slaves,master_config.min_slaves);
	    break;

	case 3:
	    ifr.ifr_data = (caddr_t) &slave_config;
	    strcpy(slave_config.slave_name, argv[2]);
  
	    if(ioctl (s,EQL_GETSLAVECFG, &ifr)==-1)
	    {
		perror("EQL_GETSLAVECFG failed");
		exit (1);
	    }

	    printf( "%s:%s\tpriority:%d\n",master_name,slave_config.slave_name,slave_config.priority);
	    break;

	case 4:
	    if( isdigit(argv[2][0]))
	    {
		ifr.ifr_data = (caddr_t) &master_config;

		master_config.max_slaves = atoi(argv[2]);
		master_config.min_slaves = atoi(argv[3]);

		if(ioctl (s,EQL_SETMASTRCFG, &ifr)==-1)
		{
		    perror("EQL_SETMASTRCFG failed");
		    exit (1);
		}
		break;
	    }
	    else
	    {
		ifr.ifr_data = (caddr_t) &slave_config;
		strcpy(slave_config.slave_name, argv[2]);
		slave_config.priority = atoi(argv[3]);

		if(ioctl (s,EQL_SETSLAVECFG, &ifr)==-1)
		{
		    perror("EQL_SETSLAVECFG failed");
		    exit (1);
		}
		break;
	    }
    }

    return 0;
}

void
check_running(char *name)
{
    struct ifreq ifr;

    strcpy (ifr.ifr_name, name);
    if ( ioctl (s, SIOCGIFFLAGS, &ifr) == -1)
    {
	perror (name);
	exit (1);
    }
    if (ifr.ifr_flags & (IFF_RUNNING | IFF_UP) != (IFF_RUNNING | IFF_UP))
    {
	fprintf (stderr, "Device '%s' is not up or running.\n", name);
	exit (1);
    }
}


/*
 * Local Variables:
 * compile-command: "gcc -Wall -Wstrict-prototypes -o eql_emancipate eql_emancipate.c"
 * End:
 */