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/* $Id: plugin_ppp.c,v 1.4 2004/03/03 04:44:16 reinelt Exp $
*
* plugin for ppp throughput
*
* Copyright 2003 Michael Reinelt <reinelt@eunet.at>
* Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: plugin_ppp.c,v $
* Revision 1.4 2004/03/03 04:44:16 reinelt
* changes (cosmetics?) to the big patch from Martin
* hash patch un-applied
*
* Revision 1.3 2004/03/03 03:47:04 reinelt
* big patch from Martin Hejl:
* - use qprintf() where appropriate
* - save CPU cycles on gettimeofday()
* - add quit() functions to free allocated memory
* - fixed lots of memory leaks
*
* Revision 1.2 2004/01/28 06:43:31 reinelt
* plugin_ppp finished.
*
* Revision 1.1 2004/01/27 08:13:39 reinelt
* ported PPP token to plugin_ppp
*
*/
/*
* exported functions:
*
* int plugin_init_ppp (void)
* adds ppp() function
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#ifdef HAVE_NET_IF_PPP_H
#include <net/if_ppp.h>
#else
#warning if_ppp.h not found. PPP support deactivated.
#endif
#include "debug.h"
#include "plugin.h"
#include "qprintf.h"
#include "hash.h"
#ifdef HAVE_NET_IF_PPP_H
static HASH PPP = { 0, };
static int get_ppp_stats (void)
{
int age;
int unit;
unsigned ibytes, obytes;
static int fd=-2;
struct ifpppstatsreq req;
char key[16], val[16];
// reread every 10 msec only
age=hash_age(&PPP, NULL, NULL);
if (age>0 && age<=10) return 0;
// open socket only once
if (fd==-2) {
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd==-1) {
error ("socket() failed: %s", strerror(errno));
return -1;
}
}
for (unit=0; unit<8; unit++) {
memset (&req, 0, sizeof (req));
req.stats_ptr = (caddr_t) &req.stats;
qprintf(req.ifr__name, sizeof(req.ifr__name), "ppp%d", unit);
if (ioctl(fd, SIOCGPPPSTATS, &req) == 0) {
ibytes=req.stats.p.ppp_ibytes;
obytes=req.stats.p.ppp_obytes;
} else {
ibytes=obytes=0;
}
qprintf(key, sizeof(key), "Rx:%d", unit);
qprintf(val, sizeof(val), "%d", ibytes);
hash_set_delta (&PPP, key, val);
qprintf(key, sizeof(key), "Tx:%d", unit);
qprintf(val, sizeof(val), "%d", obytes);
hash_set_delta (&PPP, key, val);
}
return 0;
}
static void my_ppp (RESULT *result, RESULT *arg1, RESULT *arg2)
{
double value;
if (get_ppp_stats()<0) {
SetResult(&result, R_STRING, "");
return;
}
value=hash_get_delta(&PPP, R2S(arg1), R2N(arg2));
SetResult(&result, R_NUMBER, &value);
}
#endif
int plugin_init_ppp (void)
{
#ifdef HAVE_NET_IF_PPP_H
AddFunction ("ppp", 3, my_ppp);
#endif
return 0;
}
void plugin_exit_ppp(void)
{
hash_destroy(&PPP);
}
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