pppstats/pppstats.c - manifest_repos/ppp - Git at Google

 /*
  * print PPP statistics:
  * 	pppstats [-a|-d] [-v|-r|-z] [-c count] [-w wait] [interface]
  *
  *   -a Show absolute values rather than deltas
  *   -d Show data rate (kB/s) rather than bytes
  *   -v Show more stats for VJ TCP header compression
  *   -r Show compression ratio
  *   -z Show compression statistics instead of default display
  *
  * History:
  *      perkins@cps.msu.edu: Added compression statistics and alternate
  *                display. 11/94
  *	Brad Parker (brad@cayman.com) 6/92
  *
  * from the original "slstats" by Van Jacobson
  *
  * 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.
  */

 #ifndef __STDC__
 #define const
 #endif

 #ifndef lint
 static const char rcsid[] = "$Id: pppstats.c,v 1.29 2002/10/27 12:56:26 fcusack Exp $";
 #endif

 #include <stdio.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
 #include <errno.h>
 #include <signal.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>

 #ifndef STREAMS
 #if defined(__linux__) && defined(__powerpc__) \
     && (__GLIBC__ == 2 && __GLIBC_MINOR__ == 0)
 /* kludge alert! */
 #undef __GLIBC__
 #endif
 #include <sys/socket.h>		/* *BSD, Linux, NeXT, Ultrix etc. */
 #ifndef __linux__
 #include <net/if.h>
 #include <net/ppp_defs.h>
 #include <net/if_ppp.h>
 #else
 /* Linux */
 #if __GLIBC__ >= 2
 #include <asm/types.h>		/* glibc 2 conflicts with linux/types.h */
 #include <net/if.h>
 #else
 #include <linux/types.h>
 #include <linux/if.h>
 #endif
 #include <linux/ppp_defs.h>
 #include <linux/if_ppp.h>
 #endif /* __linux__ */

 #else	/* STREAMS */
 #include <sys/stropts.h>	/* SVR4, Solaris 2, SunOS 4, OSF/1, etc. */
 #include <net/ppp_defs.h>
 #include <net/pppio.h>

 #endif	/* STREAMS */

 int	vflag, rflag, zflag;	/* select type of display */
 int	aflag;			/* print absolute values, not deltas */
 int	dflag;			/* print data rates, not bytes */
 int	interval, count;
 int	infinite;
 int	s;			/* socket or /dev/ppp file descriptor */
 int	signalled;		/* set if alarm goes off "early" */
 char	*progname;
 char	*interface;

 #if defined(SUNOS4) || defined(ULTRIX) || defined(NeXT)
 extern int optind;
 extern char *optarg;
 #endif

 /*
  * If PPP_DRV_NAME is not defined, use the legacy "ppp" as the
  * device name.
  */
 #if !defined(PPP_DRV_NAME)
 #define PPP_DRV_NAME    "ppp"
 #endif /* !defined(PPP_DRV_NAME) */

 static void usage(void);
 static void catchalarm(int);
 static void get_ppp_stats(struct ppp_stats *);
 static void get_ppp_cstats(struct ppp_comp_stats *);
 static void intpr(void);

 int main(int, char *argv[]);

 static void
 usage(void)
 {
     fprintf(stderr, "Usage: %s [-a|-d] [-v|-r|-z] [-c count] [-w wait] [interface]\n",
 	    progname);
     exit(1);
 }

 /*
  * Called if an interval expires before intpr has completed a loop.
  * Sets a flag to not wait for the alarm.
  */
 static void
 catchalarm(int arg)
 {
     signalled = 1;
 }


 #ifndef STREAMS
 static void
 get_ppp_stats(struct ppp_stats *curp)
 {
     struct ifpppstatsreq req;

     memset (&req, 0, sizeof (req));

 #ifdef __linux__
     req.stats_ptr = (caddr_t) &req.stats;
 #undef ifr_name
 #define ifr_name ifr__name
 #endif

     strncpy(req.ifr_name, interface, IFNAMSIZ);
     req.ifr_name[IFNAMSIZ - 1] = 0;
     if (ioctl(s, SIOCGPPPSTATS, &req) < 0) {
 	fprintf(stderr, "%s: ", progname);
 	if (errno == ENOTTY)
 	    fprintf(stderr, "kernel support missing\n");
 	else
 	    perror("couldn't get PPP statistics");
 	exit(1);
     }
     *curp = req.stats;
 }

 static void
 get_ppp_cstats(struct ppp_comp_stats *csp)
 {
     struct ifpppcstatsreq creq;

     memset (&creq, 0, sizeof (creq));

 #ifdef __linux__
     creq.stats_ptr = (caddr_t) &creq.stats;
 #undef  ifr_name
 #define ifr_name ifr__name
 #endif

     strncpy(creq.ifr_name, interface, IFNAMSIZ);
     creq.ifr_name[IFNAMSIZ - 1] = 0;
     if (ioctl(s, SIOCGPPPCSTATS, &creq) < 0) {
 	fprintf(stderr, "%s: ", progname);
 	if (errno == ENOTTY) {
 	    fprintf(stderr, "no kernel compression support\n");
 	    if (zflag)
 		exit(1);
 	    rflag = 0;
 	} else {
 	    perror("couldn't get PPP compression stats");
 	    exit(1);
 	}
     }

 #ifdef __linux__
     if (creq.stats.c.bytes_out == 0) {
 	creq.stats.c.bytes_out = creq.stats.c.comp_bytes + creq.stats.c.inc_bytes;
 	creq.stats.c.in_count = creq.stats.c.unc_bytes;
     }
     if (creq.stats.c.bytes_out == 0)
 	creq.stats.c.ratio = 0.0;
     else
 	creq.stats.c.ratio = 256.0 * creq.stats.c.in_count /
 			     creq.stats.c.bytes_out;

     if (creq.stats.d.bytes_out == 0) {
 	creq.stats.d.bytes_out = creq.stats.d.comp_bytes + creq.stats.d.inc_bytes;
 	creq.stats.d.in_count = creq.stats.d.unc_bytes;
     }
     if (creq.stats.d.bytes_out == 0)
 	creq.stats.d.ratio = 0.0;
     else
 	creq.stats.d.ratio = 256.0 * creq.stats.d.in_count /
 			     creq.stats.d.bytes_out;
 #endif

     *csp = creq.stats;
 }

 #else	/* STREAMS */

 int
 strioctl(int fd, int cmd, char *ptr, int ilen, int olen)
 {
     struct strioctl str;

     str.ic_cmd = cmd;
     str.ic_timout = 0;
     str.ic_len = ilen;
     str.ic_dp = ptr;
     if (ioctl(fd, I_STR, &str) == -1)
 	return -1;
     if (str.ic_len != olen)
 	fprintf(stderr, "strioctl: expected %d bytes, got %d for cmd %x\n",
 	       olen, str.ic_len, cmd);
     return 0;
 }

 static void
 get_ppp_stats(struct ppp_stats *curp)
 {
     if (strioctl(s, PPPIO_GETSTAT, curp, 0, sizeof(*curp)) < 0) {
 	fprintf(stderr, "%s: ", progname);
 	if (errno == EINVAL)
 	    fprintf(stderr, "kernel support missing\n");
 	else
 	    perror("couldn't get PPP statistics");
 	exit(1);
     }
 }

 static void
 get_ppp_cstats(struct ppp_comp_stats *csp)
 {
     if (strioctl(s, PPPIO_GETCSTAT, csp, 0, sizeof(*csp)) < 0) {
 	fprintf(stderr, "%s: ", progname);
 	if (errno == ENOTTY) {
 	    fprintf(stderr, "no kernel compression support\n");
 	    if (zflag)
 		exit(1);
 	    rflag = 0;
 	} else {
 	    perror("couldn't get PPP compression statistics");
 	    exit(1);
 	}
     }
 }

 #endif /* STREAMS */

 #define MAX0(a)		((int)(a) > 0? (a): 0)
 #define V(offset)	MAX0(cur.offset - old.offset)
 #define W(offset)	MAX0(ccs.offset - ocs.offset)

 #define RATIO(c, i, u)	((c) == 0? 1.0: (u) / ((double)(c) + (i)))
 #define CRATE(x)	RATIO(W(x.comp_bytes), W(x.inc_bytes), W(x.unc_bytes))

 #define KBPS(n)		((n) / (interval * 1000.0))

 /*
  * 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 is cumulative.
  */
 static void
 intpr(void)
 {
     register int line = 0;
     sigset_t oldmask, mask;
     char *bunit;
     int ratef = 0;
     struct ppp_stats cur, old;
     struct ppp_comp_stats ccs, ocs;

     memset(&old, 0, sizeof(old));
     memset(&ocs, 0, sizeof(ocs));

     while (1) {
 	get_ppp_stats(&cur);
 	if (zflag || rflag)
 	    get_ppp_cstats(&ccs);

 	(void)signal(SIGALRM, catchalarm);
 	signalled = 0;
 	(void)alarm(interval);

 	if ((line % 20) == 0) {
 	    if (zflag) {
 		printf("IN:  COMPRESSED  INCOMPRESSIBLE   COMP | ");
 		printf("OUT: COMPRESSED  INCOMPRESSIBLE   COMP\n");
 		bunit = dflag? "KB/S": "BYTE";
 		printf("    %s   PACK     %s   PACK  RATIO | ", bunit, bunit);
 		printf("    %s   PACK     %s   PACK  RATIO", bunit, bunit);
 	    } else {
 		printf("%8.8s %6.6s %6.6s",
 		       "IN", "PACK", "VJCOMP");

 		if (!rflag)
 		    printf(" %6.6s %6.6s", "VJUNC", "VJERR");
 		if (vflag)
 		    printf(" %6.6s %6.6s", "VJTOSS", "NON-VJ");
 		if (rflag)
 		    printf(" %6.6s %6.6s", "RATIO", "UBYTE");
 		printf("  | %8.8s %6.6s %6.6s",
 		       "OUT", "PACK", "VJCOMP");

 		if (!rflag)
 		    printf(" %6.6s %6.6s", "VJUNC", "NON-VJ");
 		if (vflag)
 		    printf(" %6.6s %6.6s", "VJSRCH", "VJMISS");
 		if (rflag)
 		    printf(" %6.6s %6.6s", "RATIO", "UBYTE");
 	    }
 	    putchar('\n');
 	}

 	if (zflag) {
 	    if (ratef) {
 		printf("%8.3f %6u %8.3f %6u %6.2f",
 		       KBPS(W(d.comp_bytes)),
 		       W(d.comp_packets),
 		       KBPS(W(d.inc_bytes)),
 		       W(d.inc_packets),
 		       ccs.d.ratio / 256.0);
 		printf(" | %8.3f %6u %8.3f %6u %6.2f",
 		       KBPS(W(c.comp_bytes)),
 		       W(c.comp_packets),
 		       KBPS(W(c.inc_bytes)),
 		       W(c.inc_packets),
 		       ccs.c.ratio / 256.0);
 	    } else {
 		printf("%8u %6u %8u %6u %6.2f",
 		       W(d.comp_bytes),
 		       W(d.comp_packets),
 		       W(d.inc_bytes),
 		       W(d.inc_packets),
 		       ccs.d.ratio / 256.0);
 		printf(" | %8u %6u %8u %6u %6.2f",
 		       W(c.comp_bytes),
 		       W(c.comp_packets),
 		       W(c.inc_bytes),
 		       W(c.inc_packets),
 		       ccs.c.ratio / 256.0);
 	    }

 	} else {
 	    if (ratef)
 		printf("%8.3f", KBPS(V(p.ppp_ibytes)));
 	    else
 		printf("%8u", V(p.ppp_ibytes));
 	    printf(" %6u %6u",
 		   V(p.ppp_ipackets),
 		   V(vj.vjs_compressedin));
 	    if (!rflag)
 		printf(" %6u %6u",
 		       V(vj.vjs_uncompressedin),
 		       V(vj.vjs_errorin));
 	    if (vflag)
 		printf(" %6u %6u",
 		       V(vj.vjs_tossed),
 		       V(p.ppp_ipackets) - V(vj.vjs_compressedin)
 		       - V(vj.vjs_uncompressedin) - V(vj.vjs_errorin));
 	    if (rflag) {
 		printf(" %6.2f ", CRATE(d));
 		if (ratef)
 		    printf("%6.2f", KBPS(W(d.unc_bytes)));
 		else
 		    printf("%6u", W(d.unc_bytes));
 	    }
 	    if (ratef)
 		printf("  | %8.3f", KBPS(V(p.ppp_obytes)));
 	    else
 		printf("  | %8u", V(p.ppp_obytes));
 	    printf(" %6u %6u",
 		   V(p.ppp_opackets),
 		   V(vj.vjs_compressed));
 	    if (!rflag)
 		printf(" %6u %6u",
 		       V(vj.vjs_packets) - V(vj.vjs_compressed),
 		       V(p.ppp_opackets) - V(vj.vjs_packets));
 	    if (vflag)
 		printf(" %6u %6u",
 		       V(vj.vjs_searches),
 		       V(vj.vjs_misses));
 	    if (rflag) {
 		printf(" %6.2f ", CRATE(c));
 		if (ratef)
 		    printf("%6.2f", KBPS(W(c.unc_bytes)));
 		else
 		    printf("%6u", W(c.unc_bytes));
 	    }

 	}

 	putchar('\n');
 	fflush(stdout);
 	line++;

 	count--;
 	if (!infinite && !count)
 	    break;

 	sigemptyset(&mask);
 	sigaddset(&mask, SIGALRM);
 	sigprocmask(SIG_BLOCK, &mask, &oldmask);
 	if (!signalled) {
 	    sigemptyset(&mask);
 	    sigsuspend(&mask);
 	}
 	sigprocmask(SIG_SETMASK, &oldmask, NULL);
 	signalled = 0;
 	(void)alarm(interval);

 	if (!aflag) {
 	    old = cur;
 	    ocs = ccs;
 	    ratef = dflag;
 	}
     }
 }

 int
 main(int argc, char *argv[])
 {
     int c;
 #ifdef STREAMS
     int unit;
     char *dev;
 #endif

     interface = PPP_DRV_NAME "0";
     if ((progname = strrchr(argv[0], '/')) == NULL)
 	progname = argv[0];
     else
 	++progname;

     while ((c = getopt(argc, argv, "advrzc:w:")) != -1) {
 	switch (c) {
 	case 'a':
 	    ++aflag;
 	    break;
 	case 'd':
 	    ++dflag;
 	    break;
 	case 'v':
 	    ++vflag;
 	    break;
 	case 'r':
 	    ++rflag;
 	    break;
 	case 'z':
 	    ++zflag;
 	    break;
 	case 'c':
 	    count = atoi(optarg);
 	    if (count <= 0)
 		usage();
 	    break;
 	case 'w':
 	    interval = atoi(optarg);
 	    if (interval <= 0)
 		usage();
 	    break;
 	default:
 	    usage();
 	}
     }
     argc -= optind;
     argv += optind;

     if (!interval && count)
 	interval = 5;
     if (interval && !count)
 	infinite = 1;
     if (!interval && !count)
 	count = 1;
     if (aflag)
 	dflag = 0;

     if (argc > 1)
 	usage();
     if (argc > 0)
 	interface = argv[0];

 #ifndef STREAMS
     {
 	struct ifreq ifr;

 	s = socket(AF_INET, SOCK_DGRAM, 0);
 	if (s < 0) {
 	    fprintf(stderr, "%s: ", progname);
 	    perror("couldn't create IP socket");
 	    exit(1);
 	}

 #ifdef __linux__
 #undef  ifr_name
 #define ifr_name ifr_ifrn.ifrn_name
 #endif
 	strncpy(ifr.ifr_name, interface, IFNAMSIZ);
 	ifr.ifr_name[IFNAMSIZ - 1] = 0;
 	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
 	    fprintf(stderr, "%s: nonexistent interface '%s' specified\n",
 		    progname, interface);
 	    exit(1);
 	}
     }

 #else	/* STREAMS */
     if (sscanf(interface, PPP_DRV_NAME "%d", &unit) != 1) {
 	fprintf(stderr, "%s: invalid interface '%s' specified\n",
 		progname, interface);
     }

 #ifdef __osf__
     dev = "/dev/streams/ppp";
 #else
     dev = "/dev/" PPP_DRV_NAME;
 #endif
     if ((s = open(dev, O_RDONLY)) < 0) {
 	fprintf(stderr, "%s: couldn't open ", progname);
 	perror(dev);
 	exit(1);
     }
     if (strioctl(s, PPPIO_ATTACH, &unit, sizeof(int), 0) < 0) {
 	fprintf(stderr, "%s: ppp%d is not available\n", progname, unit);
 	exit(1);
     }

 #endif	/* STREAMS */

     intpr();
     exit(0);
 }
	/*
	* print PPP statistics:
	* pppstats [-a\|-d] [-v\|-r\|-z] [-c count] [-w wait] [interface]
	*
	* -a Show absolute values rather than deltas
	* -d Show data rate (kB/s) rather than bytes
	* -v Show more stats for VJ TCP header compression
	* -r Show compression ratio
	* -z Show compression statistics instead of default display
	*
	* History:
	* perkins@cps.msu.edu: Added compression statistics and alternate
	* display. 11/94
	* Brad Parker (brad@cayman.com) 6/92
	*
	* from the original "slstats" by Van Jacobson
	*
	* 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.
	*/

	#ifndef __STDC__
	#define const
	#endif

	#ifndef lint
	static const char rcsid[] = "$Id: pppstats.c,v 1.29 2002/10/27 12:56:26 fcusack Exp $";
	#endif

	#include <stdio.h>
	#include <stddef.h>
	#include <stdlib.h>
	#include <string.h>
	#include <ctype.h>
	#include <errno.h>
	#include <signal.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <sys/param.h>
	#include <sys/types.h>
	#include <sys/ioctl.h>

	#ifndef STREAMS
	#if defined(__linux__) && defined(__powerpc__) \
	&& (__GLIBC__ == 2 && __GLIBC_MINOR__ == 0)
	/* kludge alert! */
	#undef __GLIBC__
	#endif
	#include <sys/socket.h> /* BSD, Linux, NeXT, Ultrix etc. /
	#ifndef __linux__
	#include <net/if.h>
	#include <net/ppp_defs.h>
	#include <net/if_ppp.h>
	#else
	/* Linux */
	#if __GLIBC__ >= 2
	#include <asm/types.h> /* glibc 2 conflicts with linux/types.h */
	#include <net/if.h>
	#else
	#include <linux/types.h>
	#include <linux/if.h>
	#endif
	#include <linux/ppp_defs.h>
	#include <linux/if_ppp.h>
	#endif /* __linux__ */

	#else /* STREAMS */
	#include <sys/stropts.h> /* SVR4, Solaris 2, SunOS 4, OSF/1, etc. */
	#include <net/ppp_defs.h>
	#include <net/pppio.h>

	#endif /* STREAMS */

	int vflag, rflag, zflag; /* select type of display */
	int aflag; /* print absolute values, not deltas */
	int dflag; /* print data rates, not bytes */
	int interval, count;
	int infinite;
	int s; /* socket or /dev/ppp file descriptor */
	int signalled; /* set if alarm goes off "early" */
	char *progname;
	char *interface;

	#if defined(SUNOS4) \|\| defined(ULTRIX) \|\| defined(NeXT)
	extern int optind;
	extern char *optarg;
	#endif

	/*
	* If PPP_DRV_NAME is not defined, use the legacy "ppp" as the
	* device name.
	*/
	#if !defined(PPP_DRV_NAME)
	#define PPP_DRV_NAME "ppp"
	#endif /* !defined(PPP_DRV_NAME) */

	static void usage(void);
	static void catchalarm(int);
	static void get_ppp_stats(struct ppp_stats *);
	static void get_ppp_cstats(struct ppp_comp_stats *);
	static void intpr(void);

	int main(int, char *argv[]);

	static void
	usage(void)
	{
	fprintf(stderr, "Usage: %s [-a\|-d] [-v\|-r\|-z] [-c count] [-w wait] [interface]\n",
	progname);
	exit(1);
	}

	/*
	* Called if an interval expires before intpr has completed a loop.
	* Sets a flag to not wait for the alarm.
	*/
	static void
	catchalarm(int arg)
	{
	signalled = 1;
	}


	#ifndef STREAMS
	static void
	get_ppp_stats(struct ppp_stats *curp)
	{
	struct ifpppstatsreq req;

	memset (&req, 0, sizeof (req));

	#ifdef __linux__
	req.stats_ptr = (caddr_t) &req.stats;
	#undef ifr_name
	#define ifr_name ifr__name
	#endif

	strncpy(req.ifr_name, interface, IFNAMSIZ);
	req.ifr_name[IFNAMSIZ - 1] = 0;
	if (ioctl(s, SIOCGPPPSTATS, &req) < 0) {
	fprintf(stderr, "%s: ", progname);
	if (errno == ENOTTY)
	fprintf(stderr, "kernel support missing\n");
	else
	perror("couldn't get PPP statistics");
	exit(1);
	}
	*curp = req.stats;
	}

	static void
	get_ppp_cstats(struct ppp_comp_stats *csp)
	{
	struct ifpppcstatsreq creq;

	memset (&creq, 0, sizeof (creq));

	#ifdef __linux__
	creq.stats_ptr = (caddr_t) &creq.stats;
	#undef ifr_name
	#define ifr_name ifr__name
	#endif

	strncpy(creq.ifr_name, interface, IFNAMSIZ);
	creq.ifr_name[IFNAMSIZ - 1] = 0;
	if (ioctl(s, SIOCGPPPCSTATS, &creq) < 0) {
	fprintf(stderr, "%s: ", progname);
	if (errno == ENOTTY) {
	fprintf(stderr, "no kernel compression support\n");
	if (zflag)
	exit(1);
	rflag = 0;
	} else {
	perror("couldn't get PPP compression stats");
	exit(1);
	}
	}

	#ifdef __linux__
	if (creq.stats.c.bytes_out == 0) {
	creq.stats.c.bytes_out = creq.stats.c.comp_bytes + creq.stats.c.inc_bytes;
	creq.stats.c.in_count = creq.stats.c.unc_bytes;
	}
	if (creq.stats.c.bytes_out == 0)
	creq.stats.c.ratio = 0.0;
	else
	creq.stats.c.ratio = 256.0 * creq.stats.c.in_count /
	creq.stats.c.bytes_out;

	if (creq.stats.d.bytes_out == 0) {
	creq.stats.d.bytes_out = creq.stats.d.comp_bytes + creq.stats.d.inc_bytes;
	creq.stats.d.in_count = creq.stats.d.unc_bytes;
	}
	if (creq.stats.d.bytes_out == 0)
	creq.stats.d.ratio = 0.0;
	else
	creq.stats.d.ratio = 256.0 * creq.stats.d.in_count /
	creq.stats.d.bytes_out;
	#endif

	*csp = creq.stats;
	}

	#else /* STREAMS */

	int
	strioctl(int fd, int cmd, char *ptr, int ilen, int olen)
	{
	struct strioctl str;

	str.ic_cmd = cmd;
	str.ic_timout = 0;
	str.ic_len = ilen;
	str.ic_dp = ptr;
	if (ioctl(fd, I_STR, &str) == -1)
	return -1;
	if (str.ic_len != olen)
	fprintf(stderr, "strioctl: expected %d bytes, got %d for cmd %x\n",
	olen, str.ic_len, cmd);
	return 0;
	}

	static void
	get_ppp_stats(struct ppp_stats *curp)
	{
	if (strioctl(s, PPPIO_GETSTAT, curp, 0, sizeof(*curp)) < 0) {
	fprintf(stderr, "%s: ", progname);
	if (errno == EINVAL)
	fprintf(stderr, "kernel support missing\n");
	else
	perror("couldn't get PPP statistics");
	exit(1);
	}
	}

	static void
	get_ppp_cstats(struct ppp_comp_stats *csp)
	{
	if (strioctl(s, PPPIO_GETCSTAT, csp, 0, sizeof(*csp)) < 0) {
	fprintf(stderr, "%s: ", progname);
	if (errno == ENOTTY) {
	fprintf(stderr, "no kernel compression support\n");
	if (zflag)
	exit(1);
	rflag = 0;
	} else {
	perror("couldn't get PPP compression statistics");
	exit(1);
	}
	}
	}

	#endif /* STREAMS */

	#define MAX0(a) ((int)(a) > 0? (a): 0)
	#define V(offset) MAX0(cur.offset - old.offset)
	#define W(offset) MAX0(ccs.offset - ocs.offset)

	#define RATIO(c, i, u) ((c) == 0? 1.0: (u) / ((double)(c) + (i)))
	#define CRATE(x) RATIO(W(x.comp_bytes), W(x.inc_bytes), W(x.unc_bytes))

	#define KBPS(n) ((n) / (interval * 1000.0))

	/*
	* 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 is cumulative.
	*/
	static void
	intpr(void)
	{
	register int line = 0;
	sigset_t oldmask, mask;
	char *bunit;
	int ratef = 0;
	struct ppp_stats cur, old;
	struct ppp_comp_stats ccs, ocs;

	memset(&old, 0, sizeof(old));
	memset(&ocs, 0, sizeof(ocs));

	while (1) {
	get_ppp_stats(&cur);
	if (zflag \|\| rflag)
	get_ppp_cstats(&ccs);

	(void)signal(SIGALRM, catchalarm);
	signalled = 0;
	(void)alarm(interval);

	if ((line % 20) == 0) {
	if (zflag) {
	printf("IN: COMPRESSED INCOMPRESSIBLE COMP \| ");
	printf("OUT: COMPRESSED INCOMPRESSIBLE COMP\n");
	bunit = dflag? "KB/S": "BYTE";
	printf(" %s PACK %s PACK RATIO \| ", bunit, bunit);
	printf(" %s PACK %s PACK RATIO", bunit, bunit);
	} else {
	printf("%8.8s %6.6s %6.6s",
	"IN", "PACK", "VJCOMP");

	if (!rflag)
	printf(" %6.6s %6.6s", "VJUNC", "VJERR");
	if (vflag)
	printf(" %6.6s %6.6s", "VJTOSS", "NON-VJ");
	if (rflag)
	printf(" %6.6s %6.6s", "RATIO", "UBYTE");
	printf(" \| %8.8s %6.6s %6.6s",
	"OUT", "PACK", "VJCOMP");

	if (!rflag)
	printf(" %6.6s %6.6s", "VJUNC", "NON-VJ");
	if (vflag)
	printf(" %6.6s %6.6s", "VJSRCH", "VJMISS");
	if (rflag)
	printf(" %6.6s %6.6s", "RATIO", "UBYTE");
	}
	putchar('\n');
	}

	if (zflag) {
	if (ratef) {
	printf("%8.3f %6u %8.3f %6u %6.2f",
	KBPS(W(d.comp_bytes)),
	W(d.comp_packets),
	KBPS(W(d.inc_bytes)),
	W(d.inc_packets),
	ccs.d.ratio / 256.0);
	printf(" \| %8.3f %6u %8.3f %6u %6.2f",
	KBPS(W(c.comp_bytes)),
	W(c.comp_packets),
	KBPS(W(c.inc_bytes)),
	W(c.inc_packets),
	ccs.c.ratio / 256.0);
	} else {
	printf("%8u %6u %8u %6u %6.2f",
	W(d.comp_bytes),
	W(d.comp_packets),
	W(d.inc_bytes),
	W(d.inc_packets),
	ccs.d.ratio / 256.0);
	printf(" \| %8u %6u %8u %6u %6.2f",
	W(c.comp_bytes),
	W(c.comp_packets),
	W(c.inc_bytes),
	W(c.inc_packets),
	ccs.c.ratio / 256.0);
	}

	} else {
	if (ratef)
	printf("%8.3f", KBPS(V(p.ppp_ibytes)));
	else
	printf("%8u", V(p.ppp_ibytes));
	printf(" %6u %6u",
	V(p.ppp_ipackets),
	V(vj.vjs_compressedin));
	if (!rflag)
	printf(" %6u %6u",
	V(vj.vjs_uncompressedin),
	V(vj.vjs_errorin));
	if (vflag)
	printf(" %6u %6u",
	V(vj.vjs_tossed),
	V(p.ppp_ipackets) - V(vj.vjs_compressedin)
	- V(vj.vjs_uncompressedin) - V(vj.vjs_errorin));
	if (rflag) {
	printf(" %6.2f ", CRATE(d));
	if (ratef)
	printf("%6.2f", KBPS(W(d.unc_bytes)));
	else
	printf("%6u", W(d.unc_bytes));
	}
	if (ratef)
	printf(" \| %8.3f", KBPS(V(p.ppp_obytes)));
	else
	printf(" \| %8u", V(p.ppp_obytes));
	printf(" %6u %6u",
	V(p.ppp_opackets),
	V(vj.vjs_compressed));
	if (!rflag)
	printf(" %6u %6u",
	V(vj.vjs_packets) - V(vj.vjs_compressed),
	V(p.ppp_opackets) - V(vj.vjs_packets));
	if (vflag)
	printf(" %6u %6u",
	V(vj.vjs_searches),
	V(vj.vjs_misses));
	if (rflag) {
	printf(" %6.2f ", CRATE(c));
	if (ratef)
	printf("%6.2f", KBPS(W(c.unc_bytes)));
	else
	printf("%6u", W(c.unc_bytes));
	}

	}

	putchar('\n');
	fflush(stdout);
	line++;

	count--;
	if (!infinite && !count)
	break;

	sigemptyset(&mask);
	sigaddset(&mask, SIGALRM);
	sigprocmask(SIG_BLOCK, &mask, &oldmask);
	if (!signalled) {
	sigemptyset(&mask);
	sigsuspend(&mask);
	}
	sigprocmask(SIG_SETMASK, &oldmask, NULL);
	signalled = 0;
	(void)alarm(interval);

	if (!aflag) {
	old = cur;
	ocs = ccs;
	ratef = dflag;
	}
	}
	}

	int
	main(int argc, char *argv[])
	{
	int c;
	#ifdef STREAMS
	int unit;
	char *dev;
	#endif

	interface = PPP_DRV_NAME "0";
	if ((progname = strrchr(argv[0], '/')) == NULL)
	progname = argv[0];
	else
	++progname;

	while ((c = getopt(argc, argv, "advrzc:w:")) != -1) {
	switch (c) {
	case 'a':
	++aflag;
	break;
	case 'd':
	++dflag;
	break;
	case 'v':
	++vflag;
	break;
	case 'r':
	++rflag;
	break;
	case 'z':
	++zflag;
	break;
	case 'c':
	count = atoi(optarg);
	if (count <= 0)
	usage();
	break;
	case 'w':
	interval = atoi(optarg);
	if (interval <= 0)
	usage();
	break;
	default:
	usage();
	}
	}
	argc -= optind;
	argv += optind;

	if (!interval && count)
	interval = 5;
	if (interval && !count)
	infinite = 1;
	if (!interval && !count)
	count = 1;
	if (aflag)
	dflag = 0;

	if (argc > 1)
	usage();
	if (argc > 0)
	interface = argv[0];

	#ifndef STREAMS
	{
	struct ifreq ifr;

	s = socket(AF_INET, SOCK_DGRAM, 0);
	if (s < 0) {
	fprintf(stderr, "%s: ", progname);
	perror("couldn't create IP socket");
	exit(1);
	}

	#ifdef __linux__
	#undef ifr_name
	#define ifr_name ifr_ifrn.ifrn_name
	#endif
	strncpy(ifr.ifr_name, interface, IFNAMSIZ);
	ifr.ifr_name[IFNAMSIZ - 1] = 0;
	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
	fprintf(stderr, "%s: nonexistent interface '%s' specified\n",
	progname, interface);
	exit(1);
	}
	}

	#else /* STREAMS */
	if (sscanf(interface, PPP_DRV_NAME "%d", &unit) != 1) {
	fprintf(stderr, "%s: invalid interface '%s' specified\n",
	progname, interface);
	}

	#ifdef __osf__
	dev = "/dev/streams/ppp";
	#else
	dev = "/dev/" PPP_DRV_NAME;
	#endif
	if ((s = open(dev, O_RDONLY)) < 0) {
	fprintf(stderr, "%s: couldn't open ", progname);
	perror(dev);
	exit(1);
	}
	if (strioctl(s, PPPIO_ATTACH, &unit, sizeof(int), 0) < 0) {
	fprintf(stderr, "%s: ppp%d is not available\n", progname, unit);
	exit(1);
	}

	#endif /* STREAMS */

	intpr();
	exit(0);
	}