Initial revision

This commit is contained in:
agibert 2001-11-20 00:35:03 +00:00
commit c93cebc583

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eql_enslave.c Normal file
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/*
* eql_enslave
*
* modeled from ifslave.c by Alan Cox (presumably?)
*
* (c) Copyright 1995 Simon Janes
* NCM: Network and Communications Management, Inc.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/sockios.h>
#include <linux/if.h>
#include "/usr/src/linux/drivers/net/eql.h"
void check_running(char *device_name);
int s;
int
main(int argc, char **argv)
{
struct ifreq ifr;
slaving_request_t slaving_request;
char master_name[16];
int slave_mtu;
int master_mtu;
if (argc != 4)
{
fprintf (stderr, "usage: %s <master> <slave> <priority>\n", argv[0]);
exit (1);
}
strcpy (master_name, argv[1]);
strcpy (slaving_request.slave_name, argv[2]);
slaving_request.priority = atol (argv[3]);
s = socket (AF_INET, SOCK_DGRAM, 0);
if ( s == -1)
{
perror ("socket");
exit (1);
}
check_running (master_name);
check_running (slaving_request.slave_name);
strcpy (ifr.ifr_name, slaving_request.slave_name);
if (ioctl (s, SIOCGIFMTU, &ifr) == -1)
{
perror("get MTU on slave failed");
exit (1);
}
slave_mtu = ifr.ifr_mtu;
strcpy (ifr.ifr_name, master_name);
if (ioctl (s, SIOCGIFMTU, &ifr) == -1)
{
perror("get MTU on master failed");
exit (1);
}
master_mtu = ifr.ifr_mtu;
if ( master_mtu != slave_mtu )
{
fprintf (stderr,
"master (%d) and slave (%d) MTU settings do not match\n",
master_mtu, slave_mtu);
exit (1);
}
strcpy (ifr.ifr_name, master_name);
ifr.ifr_data = (caddr_t) &slaving_request;
if(ioctl (s,EQL_ENSLAVE, &ifr)==-1)
{
perror("EQL_ENSLAVE failed");
exit (1);
}
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_enslave eql_enslave.c"
* End:
*/