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freebsd-dev/usr.sbin/pppstats/pppstats.c

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/*
* print PPP statistics:
* pppstats [-i interval] [-v] [interface] [system] [core]
*
* Brad Parker (brad@cayman.com) 6/92
*
* from the original "slstats" by Van Jaconson
*
* Copyright (c) 1989 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@helios.ee.lbl.gov), Dec 31, 1989:
* - Initial distribution.
*/
#ifndef lint
static char rcsid[] = "$Id: pppstats.c,v 1.4 1995/05/30 03:51:18 rgrimes Exp $";
#endif
#include <ctype.h>
#include <errno.h>
#include <nlist.h>
#include <stdio.h>
#include <limits.h>
#include <signal.h>
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/file.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#define VJC 1
#include <net/slcompress.h>
#ifndef STREAMS
#include <net/if_ppp.h>
#endif
#ifdef STREAMS
#define PPP_STATS 1 /* should be defined iff it is in ppp_if.c */
#include <sys/stream.h>
#include <net/ppp_str.h>
#endif
#define INTERFACE_PREFIX "ppp%d"
char interface[IFNAMSIZ];
#ifdef BSD4_4
#define KVMLIB
#endif
#ifndef KVMLIB
#include <machine/pte.h>
#ifdef ultrix
#include <machine/cpu.h>
#endif
struct pte *Sysmap;
int kmem;
char *kmemf = "/dev/kmem";
extern off_t lseek();
#else /* KVMLIB */
char *kmemf;
#if defined(sun) || defined(BSD4_4)
#include <kvm.h>
kvm_t *kd;
#define KDARG kd,
#else /* sun */
#define KDARG
#endif /* sun */
#endif /* KVMLIB */
#ifdef STREAMS
struct nlist nl[] = {
#define N_SOFTC 0
{ "_pii" },
"",
};
#else
struct nlist nl[] = {
#define N_SOFTC 0
{ "_ppp_softc" },
"",
};
#endif
#ifndef BSD4_4
char *system = "/vmunix";
#else
#include <paths.h>
#if defined(__FreeBSD__)
/* _PATH_UNIX is defined as "Do not use _PATH_UNIX" */
char *system = NULL;
#else
char *system = _PATH_UNIX;
#endif
#endif
int kflag;
int vflag;
unsigned interval = 5;
int unit;
extern char *malloc();
main(argc, argv)
int argc;
char *argv[];
{
char errbuf[_POSIX2_LINE_MAX];
--argc; ++argv;
while (argc > 0) {
if (strcmp(argv[0], "-v") == 0) {
++vflag;
++argv, --argc;
continue;
}
if (strcmp(argv[0], "-i") == 0 && argv[1] &&
isdigit(argv[1][0])) {
interval = atoi(argv[1]);
if (interval <= 0)
usage();
++argv, --argc;
++argv, --argc;
continue;
}
if (isdigit(argv[0][0])) {
int s;
struct ifreq ifr;
unit = atoi(argv[0]);
if (unit < 0)
usage();
sprintf(interface, INTERFACE_PREFIX, unit);
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
err(1, "creating socket");
strcpy(ifr.ifr_name, interface);
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0)
errx(1,
"unable to confirm existence of interface '%s'",
interface);
++argv, --argc;
continue;
}
if (kflag)
usage();
system = *argv;
++argv, --argc;
if (argc > 0) {
kmemf = *argv++;
--argc;
kflag++;
}
}
#ifndef KVMLIB
if (nlist(system, nl) < 0 || nl[0].n_type == 0) {
fprintf(stderr, "%s: no namelist\n", system);
exit(1);
}
kmem = open(kmemf, O_RDONLY);
if (kmem < 0) {
perror(kmemf);
exit(1);
}
#ifndef ultrix
if (kflag) {
off_t off;
Sysmap = (struct pte *)
malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
if (!Sysmap) {
fputs("pppstats: can't get memory for Sysmap.\n", stderr);
exit(1);
}
off = nl[N_SYSMAP].n_value & ~KERNBASE;
(void)lseek(kmem, off, L_SET);
(void)read(kmem, (char *)Sysmap,
(int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
}
#endif
#else
#if defined(sun)
/* SunOS */
if ((kd = kvm_open(system, kmemf, (char *)0, O_RDONLY, NULL)) == NULL) {
perror("kvm_open");
exit(1);
}
#elif defined(BSD4_4)
/* BSD4.4+ */
if ((kd = kvm_openfiles(system, kmemf, NULL, O_RDONLY, errbuf)) == NULL) {
fprintf(stderr, "kvm_openfiles: %s\n", errbuf);
exit(1);
}
#else
/* BSD4.3+ */
if (kvm_openfiles(system, kmemf, (char *)0) == -1) {
fprintf(stderr, "kvm_openfiles: %s\n", kvm_geterr());
exit(1);
}
#endif
if (kvm_nlist(KDARG nl)) {
fprintf(stderr, "pppstats: can't find symbols in nlist\n");
exit(1);
}
#endif
intpr();
exit(0);
}
#ifndef KVMLIB
/*
* Seek into the kernel for a value.
*/
off_t
klseek(fd, base, off)
int fd, off;
off_t base;
{
if (kflag) {
#ifdef ultrix
base = K0_TO_PHYS(base);
#else
/* get kernel pte */
base &= ~KERNBASE;
base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
#endif
}
return (lseek(fd, base, off));
}
#endif
usage()
{
fprintf(stderr,"usage: pppstats [-i interval] [-v] [unit] [system] [core]\n");
exit(1);
}
u_char signalled; /* set if alarm goes off "early" */
#define V(offset) ((line % 20)? sc->offset - osc->offset : sc->offset)
#ifdef STREAMS
#define STRUCT struct ppp_if_info
#define COMP pii_sc_comp
#define STATS pii_ifnet
#else
#define STRUCT struct ppp_softc
#define COMP sc_comp
#define STATS sc_if
#endif
/*
* 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.
*/
intpr()
{
register int line = 0;
int oldmask;
#ifdef __STDC__
void catchalarm(int);
#else
void catchalarm();
#endif
STRUCT *sc, *osc;
nl[N_SOFTC].n_value += unit * sizeof(STRUCT);
sc = (STRUCT *)malloc(sizeof(STRUCT));
osc = (STRUCT *)malloc(sizeof(STRUCT));
bzero((char *)osc, sizeof(STRUCT));
while (1) {
#ifndef KVMLIB
if (klseek(kmem, (off_t)nl[N_SOFTC].n_value, 0) == -1) {
perror("kmem seek");
exit(1);
}
if (read(kmem, (char *)sc, sizeof(STRUCT)) <= 0) {
perror("kmem read");
exit(1);
}
#else
if (kvm_read(KDARG nl[N_SOFTC].n_value, sc,
sizeof(STRUCT)) != sizeof(STRUCT)) {
perror("kvm_read");
exit(1);
}
#endif
(void)signal(SIGALRM, catchalarm);
signalled = 0;
(void)alarm(interval);
if ((line % 20) == 0) {
printf("%6.6s %6.6s %6.6s %6.6s %6.6s",
"in", "pack", "comp", "uncomp", "err");
if (vflag)
printf(" %6.6s %6.6s", "toss", "ip");
printf(" | %6.6s %6.6s %6.6s %6.6s %6.6s",
"out", "pack", "comp", "uncomp", "ip");
if (vflag)
printf(" %6.6s %6.6s", "search", "miss");
putchar('\n');
}
printf("%6d %6d %6d %6d %6d",
#ifdef BSD4_4
V(STATS.if_ibytes),
#else
#ifndef STREAMS
V(sc_bytesrcvd),
#else
#ifdef PPP_STATS
V(pii_stats.ppp_ibytes),
#else
0,
#endif
#endif
#endif
V(STATS.if_ipackets),
V(COMP.sls_compressedin),
V(COMP.sls_uncompressedin),
V(COMP.sls_errorin));
if (vflag)
printf(" %6d %6d",
V(COMP.sls_tossed),
V(STATS.if_ipackets) - V(COMP.sls_compressedin) -
V(COMP.sls_uncompressedin) - V(COMP.sls_errorin));
printf(" | %6d %6d %6d %6d %6d",
#ifdef BSD4_4
V(STATS.if_obytes),
#else
#ifndef STREAMS
V(sc_bytessent),
#else
#ifdef PPP_STATS
V(pii_stats.ppp_obytes),
#else
0,
#endif
#endif
#endif
V(STATS.if_opackets),
V(COMP.sls_compressed),
V(COMP.sls_packets) - V(COMP.sls_compressed),
V(STATS.if_opackets) - V(COMP.sls_packets));
if (vflag)
printf(" %6d %6d",
V(COMP.sls_searches),
V(COMP.sls_misses));
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, sizeof(STRUCT));
}
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
void catchalarm(arg)
int arg;
{
signalled = 1;
}
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