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/*
* print serial line IP statistics:
* slstat [-i interval] [-v] [interface]
*
* Copyright (c) 1989, 1990, 1991, 1992 Regents of the University of
* California. All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Van Jacobson (van@ee.lbl.gov), Dec 31, 1989:
* - Initial distribution.
*/
#ifndef lint
static const char rcsid[] =
"$Id: slstat.c,v 1.12 1997/10/20 12:41:41 charnier Exp $";
#endif
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_mib.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <net/slcompress.h>
#include <net/if_slvar.h>
static void usage __P((void));
static void intpr __P((void));
static void catchalarm __P((int));
#define INTERFACE_PREFIX "sl%d"
char interface[IFNAMSIZ];
int rflag;
int vflag;
unsigned interval = 5;
int unit;
int name[6];
int
main(argc, argv)
int argc;
char *argv[];
{
int c, i;
size_t len;
int maxifno;
int indx;
struct ifmibdata ifmd;
while ((c = getopt(argc, argv, "vri:")) != -1) {
switch(c) {
case 'v':
++vflag;
break;
case 'r':
++rflag;
break;
case 'i':
interval = atoi(optarg);
if (interval <= 0)
usage();
break;
default:
usage();
}
}
if (optind >= argc)
sprintf(interface, INTERFACE_PREFIX, unit);
else if (isdigit(argv[optind][0])) {
unit = atoi(argv[optind]);
if (unit < 0)
usage();
sprintf(interface, INTERFACE_PREFIX, unit);
} else if (strncmp(argv[optind], "sl", 2) == 0
&& isdigit(argv[optind][2])
&& sscanf(argv[optind], "sl%d", &unit) == 1) {
strncpy(interface, argv[optind], IFNAMSIZ);
} else
usage();
name[0] = CTL_NET;
name[1] = PF_LINK;
name[2] = NETLINK_GENERIC;
name[3] = IFMIB_SYSTEM;
name[4] = IFMIB_IFCOUNT;
len = sizeof maxifno;
if (sysctl(name, 5, &maxifno, &len, 0, 0) < 0)
err(1, "sysctl net.link.generic.system.ifcount");
name[3] = IFMIB_IFDATA;
name[5] = IFDATA_GENERAL;
len = sizeof ifmd;
for (i = 1; ; i++) {
name[4] = i;
if (sysctl(name, 6, &ifmd, &len, 0, 0) < 0)
err(1, "sysctl");
if (strncmp(interface, ifmd.ifmd_name, IFNAMSIZ) == 0
&& ifmd.ifmd_data.ifi_type == IFT_SLIP) {
indx = i;
break;
}
if (i >= maxifno)
errx(1, "interface %s does not exist", interface);
}
name[4] = indx;
name[5] = IFDATA_LINKSPECIFIC;
intpr();
exit(0);
}
#define V(offset) ((line % 20)? ((sc->offset - osc->offset) / \
(rflag ? interval : 1)) : sc->offset)
#define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
static void
usage()
{
fprintf(stderr, "usage: slstat [-i interval] [-vr] [unit]\n");
exit(1);
}
u_char signalled; /* set if alarm goes off "early" */
/*
* Print a running summary of interface statistics.
* Repeat display every interval seconds, showing statistics
* collected over that interval. Assumes that interval is non-zero.
* First line printed at top of screen is always cumulative.
*/
static void
intpr()
{
register int line = 0;
int oldmask;
struct sl_softc *sc, *osc;
size_t len;
sc = (struct sl_softc *)malloc(AMT);
osc = (struct sl_softc *)malloc(AMT);
bzero((char *)osc, AMT);
len = AMT;
while (1) {
if (sysctl(name, 6, sc, &len, 0, 0) < 0 &&
(errno != ENOMEM || len != AMT))
err(1, "sysctl linkspecific");
(void)signal(SIGALRM, catchalarm);
signalled = 0;
(void)alarm(interval);
if ((line % 20) == 0) {
printf("%8.8s %6.6s %6.6s %6.6s %6.6s",
"in", "pack", "comp", "uncomp", "unknwn");
if (vflag)
printf(" %6.6s %6.6s %6.6s",
"toss", "other", "err");
printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
"out", "pack", "comp", "uncomp", "other");
if (vflag)
printf(" %6.6s %6.6s %6.6s %6.6s",
"search", "miss", "err", "coll");
putchar('\n');
}
printf("%8lu %6ld %6u %6u %6u",
V(sc_if.if_ibytes),
V(sc_if.if_ipackets),
V(sc_comp.sls_compressedin),
V(sc_comp.sls_uncompressedin),
V(sc_comp.sls_errorin));
if (vflag)
printf(" %6u %6lu %6lu",
V(sc_comp.sls_tossed),
V(sc_if.if_ipackets) -
V(sc_comp.sls_compressedin) -
V(sc_comp.sls_uncompressedin) -
V(sc_comp.sls_errorin),
V(sc_if.if_ierrors));
printf(" | %8lu %6ld %6u %6u %6lu",
V(sc_if.if_obytes) / (rflag ? interval : 1),
V(sc_if.if_opackets),
V(sc_comp.sls_compressed),
V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
V(sc_if.if_opackets) - V(sc_comp.sls_packets));
if (vflag)
printf(" %6u %6u %6lu %6lu",
V(sc_comp.sls_searches),
V(sc_comp.sls_misses),
V(sc_if.if_oerrors),
V(sc_if.if_collisions));
putchar('\n');
fflush(stdout);
line++;
oldmask = sigblock(sigmask(SIGALRM));
if (! signalled) {
sigpause(0);
}
sigsetmask(oldmask);
signalled = 0;
(void)alarm(interval);
bcopy((char *)sc, (char *)osc, AMT);
}
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
static void
catchalarm(sig)
int sig;
{
signalled = 1;
}
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