[unix-history] / usr / src / usr.bin / netstat / if.c

/*
 * Copyright (c) 1983, 1988 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 lint
static char sccsid[] = "@(#)if.c	5.12 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/socket.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netns/ns.h>
#include <netns/ns_if.h>

#include <stdio.h>
#include <signal.h>

#define	YES	1
#define	NO	0

extern	int kmem;
extern	int tflag;
extern	int dflag;
extern	int nflag;
extern	char *interface;
extern	int unit;
extern	char *routename(), *netname(), *ns_phost();

/*
 * Print a description of the network interfaces.
 */
intpr(interval, ifnetaddr)
	int interval;
	off_t ifnetaddr;
{
	struct ifnet ifnet;
	union {
		struct ifaddr ifa;
		struct in_ifaddr in;
		struct ns_ifaddr ns;
	} ifaddr;
	off_t ifaddraddr;
	struct sockaddr *sa;
	char name[16];

	if (ifnetaddr == 0) {
		printf("ifnet: symbol not defined\n");
		return;
	}
	if (interval) {
		sidewaysintpr((unsigned)interval, ifnetaddr);
		return;
	}
	klseek(kmem, ifnetaddr, 0);
	read(kmem, (char *)&ifnetaddr, sizeof ifnetaddr);
	printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s",
		"Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
		"Opkts", "Oerrs");
	printf(" %5s", "Coll");
	if (tflag)
		printf(" %s", "Time");
	if (dflag)
		printf(" %s", "Drop");
	putchar('\n');
	ifaddraddr = 0;
	while (ifnetaddr || ifaddraddr) {
		struct sockaddr_in *sin;
		register char *cp;
		int n, m;
		char *index();
		struct in_addr inet_makeaddr();

		if (ifaddraddr == 0) {
			klseek(kmem, ifnetaddr, 0);
			read(kmem, (char *)&ifnet, sizeof ifnet);
			klseek(kmem, (off_t)ifnet.if_name, 0);
			read(kmem, name, 16);
			name[15] = '\0';
			ifnetaddr = (off_t) ifnet.if_next;
			if (interface != 0 &&
			    (strcmp(name, interface) != 0 || unit != ifnet.if_unit))
				continue;
			cp = index(name, '\0');
			*cp++ = ifnet.if_unit + '0';
			if ((ifnet.if_flags&IFF_UP) == 0)
				*cp++ = '*';
			*cp = '\0';
			ifaddraddr = (off_t)ifnet.if_addrlist;
		}
		printf("%-5.5s %-5d ", name, ifnet.if_mtu);
		if (ifaddraddr == 0) {
			printf("%-11.11s ", "none");
			printf("%-15.15s ", "none");
		} else {
			klseek(kmem, ifaddraddr, 0);
			read(kmem, (char *)&ifaddr, sizeof ifaddr);
#define CP(x) ((char *)(x))
			cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
				CP(&ifaddr); sa = (struct sockaddr *)cp;
			switch (sa->sa_family) {
			case AF_UNSPEC:
				printf("%-11.11s ", "none");
				printf("%-15.15s ", "none");
				break;
			case AF_INET:
				sin = (struct sockaddr_in *)sa;
#ifdef notdef
				/* can't use inet_makeaddr because kernel
				 * keeps nets unshifted.
				 */
				in = inet_makeaddr(ifaddr.in.ia_subnet,
					INADDR_ANY);
				printf("%-11.11s ", netname(in));
#else
				printf("%-11.11s ",
					netname(htonl(ifaddr.in.ia_subnet),
						ifaddr.in.ia_subnetmask));
#endif
				printf("%-15.15s ", routename(sin->sin_addr));
				break;
			case AF_NS:
				{
				struct sockaddr_ns *sns =
					(struct sockaddr_ns *)sa;
				u_long net;
				char netnum[8];
				char *ns_phost();

				*(union ns_net *) &net = sns->sns_addr.x_net;
		sprintf(netnum, "%lxH", ntohl(net));
				upHex(netnum);
				printf("ns:%-8s ", netnum);
				printf("%-15s ", ns_phost(sns));
				}
				break;
			case AF_LINK:
				{
				struct sockaddr_dl *sdl =
					(struct sockaddr_dl *)sa;
				    cp = (char *)LLADDR(sdl);
				    n = sdl->sdl_alen;
				}
				m = printf("<Link>");
				goto hexprint;
			default:
				m = printf("(%d)", sa->sa_family);
				for (cp = sa->sa_len + (char *)sa;
					--cp > sa->sa_data && (*cp == 0);) {}
				n = cp - sa->sa_data + 1;
				cp = sa->sa_data;
			hexprint:
				while (--n >= 0)
					m += printf("%x%c", *cp++ & 0xff,
						    n > 0 ? '.' : ' ');
				m = 28 - m;
				while (m-- > 0)
					putchar(' ');
				break;
			}
			ifaddraddr = (off_t)ifaddr.ifa.ifa_next;
		}
		printf("%8d %5d %8d %5d %5d",
		    ifnet.if_ipackets, ifnet.if_ierrors,
		    ifnet.if_opackets, ifnet.if_oerrors,
		    ifnet.if_collisions);
		if (tflag)
			printf(" %3d", ifnet.if_timer);
		if (dflag)
			printf(" %3d", ifnet.if_snd.ifq_drops);
		putchar('\n');
	}
}

#define	MAXIF	10
struct	iftot {
	char	ift_name[16];		/* interface name */
	int	ift_ip;			/* input packets */
	int	ift_ie;			/* input errors */
	int	ift_op;			/* output packets */
	int	ift_oe;			/* output errors */
	int	ift_co;			/* collisions */
	int	ift_dr;			/* drops */
} iftot[MAXIF];

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.
 */
sidewaysintpr(interval, off)
	unsigned interval;
	off_t off;
{
	struct ifnet ifnet;
	off_t firstifnet;
	register struct iftot *ip, *total;
	register int line;
	struct iftot *lastif, *sum, *interesting;
	int oldmask;
	int catchalarm();

	klseek(kmem, off, 0);
	read(kmem, (char *)&firstifnet, sizeof (off_t));
	lastif = iftot;
	sum = iftot + MAXIF - 1;
	total = sum - 1;
	interesting = iftot;
	for (off = firstifnet, ip = iftot; off;) {
		char *cp;

		klseek(kmem, off, 0);
		read(kmem, (char *)&ifnet, sizeof ifnet);
		klseek(kmem, (off_t)ifnet.if_name, 0);
		ip->ift_name[0] = '(';
		read(kmem, ip->ift_name + 1, 15);
		if (interface && strcmp(ip->ift_name + 1, interface) == 0 &&
		    unit == ifnet.if_unit)
			interesting = ip;
		ip->ift_name[15] = '\0';
		cp = index(ip->ift_name, '\0');
		sprintf(cp, "%d)", ifnet.if_unit);
		ip++;
		if (ip >= iftot + MAXIF - 2)
			break;
		off = (off_t) ifnet.if_next;
	}
	lastif = ip;

	(void)signal(SIGALRM, catchalarm);
	signalled = NO;
	(void)alarm(interval);
banner:
	printf("   input    %-6.6s    output       ", interesting->ift_name);
	if (lastif - iftot > 0) {
		if (dflag)
			printf("      ");
		printf("     input   (Total)    output");
	}
	for (ip = iftot; ip < iftot + MAXIF; ip++) {
		ip->ift_ip = 0;
		ip->ift_ie = 0;
		ip->ift_op = 0;
		ip->ift_oe = 0;
		ip->ift_co = 0;
		ip->ift_dr = 0;
	}
	putchar('\n');
	printf("%8.8s %5.5s %8.8s %5.5s %5.5s ",
		"packets", "errs", "packets", "errs", "colls");
	if (dflag)
		printf("%5.5s ", "drops");
	if (lastif - iftot > 0)
		printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
			"packets", "errs", "packets", "errs", "colls");
	if (dflag)
		printf(" %5.5s", "drops");
	putchar('\n');
	fflush(stdout);
	line = 0;
loop:
	sum->ift_ip = 0;
	sum->ift_ie = 0;
	sum->ift_op = 0;
	sum->ift_oe = 0;
	sum->ift_co = 0;
	sum->ift_dr = 0;
	for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
		klseek(kmem, off, 0);
		read(kmem, (char *)&ifnet, sizeof ifnet);
		if (ip == interesting) {
			printf("%8d %5d %8d %5d %5d",
				ifnet.if_ipackets - ip->ift_ip,
				ifnet.if_ierrors - ip->ift_ie,
				ifnet.if_opackets - ip->ift_op,
				ifnet.if_oerrors - ip->ift_oe,
				ifnet.if_collisions - ip->ift_co);
			if (dflag)
				printf(" %5d",
				    ifnet.if_snd.ifq_drops - ip->ift_dr);
		}
		ip->ift_ip = ifnet.if_ipackets;
		ip->ift_ie = ifnet.if_ierrors;
		ip->ift_op = ifnet.if_opackets;
		ip->ift_oe = ifnet.if_oerrors;
		ip->ift_co = ifnet.if_collisions;
		ip->ift_dr = ifnet.if_snd.ifq_drops;
		sum->ift_ip += ip->ift_ip;
		sum->ift_ie += ip->ift_ie;
		sum->ift_op += ip->ift_op;
		sum->ift_oe += ip->ift_oe;
		sum->ift_co += ip->ift_co;
		sum->ift_dr += ip->ift_dr;
		off = (off_t) ifnet.if_next;
	}
	if (lastif - iftot > 0) {
		printf("  %8d %5d %8d %5d %5d",
			sum->ift_ip - total->ift_ip,
			sum->ift_ie - total->ift_ie,
			sum->ift_op - total->ift_op,
			sum->ift_oe - total->ift_oe,
			sum->ift_co - total->ift_co);
		if (dflag)
			printf(" %5d", sum->ift_dr - total->ift_dr);
	}
	*total = *sum;
	putchar('\n');
	fflush(stdout);
	line++;
	oldmask = sigblock(sigmask(SIGALRM));
	if (! signalled) {
		sigpause(0);
	}
	sigsetmask(oldmask);
	signalled = NO;
	(void)alarm(interval);
	if (line == 21)
		goto banner;
	goto loop;
	/*NOTREACHED*/
}

/*
 * Called if an interval expires before sidewaysintpr has completed a loop.
 * Sets a flag to not wait for the alarm.
 */
catchalarm()
{
	signalled = YES;
}
Commit	Line	Data
5ff67f98	1	/*
b36fc510	2	* Copyright (c) 1983, 1988 Regents of the University of California.
ee3f90a5 MK	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
b36fc510 KB	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
5ff67f98 DF	16	*/
5ff67f98 DF	17
55bef820	18	#ifndef lint
cb56e283	19	static char sccsid[] = "@(#)if.c 5.12 (Berkeley) %G%";
b36fc510	20	#endif /* not lint */
55bef820 SL	21
	22	#include <sys/types.h>
	23	#include <sys/socket.h>
44906619	24
55bef820	25	#include <net/if.h>
7eeb8bb9	26	#include <net/if_dl.h>
44906619	27	#include <netinet/in.h>
cab3a575	28	#include <netinet/in_var.h>
f1fbb01b	29	#include <netns/ns.h>
3e117255	30	#include <netns/ns_if.h>
44906619	31
90cb8200	32	#include <stdio.h>
39fef23d MK	33	#include <signal.h>
	34
	35	#define YES 1
	36	#define NO 0
55bef820 SL	37
	38	extern int kmem;
	39	extern int tflag;
2ebaad6c	40	extern int dflag;
55bef820	41	extern int nflag;
79ddba48 EW	42	extern char *interface;
79ddba48 EW	43	extern int unit;
39fef23d	44	extern char routename(), netname(), *ns_phost();
55bef820 SL	45
	46	/*
	47	* Print a description of the network interfaces.
55bef820 SL	48	*/
	49	intpr(interval, ifnetaddr)
	50	int interval;
	51	off_t ifnetaddr;
	52	{
	53	struct ifnet ifnet;
cab3a575 MK	54	union {
	55	struct ifaddr ifa;
	56	struct in_ifaddr in;
3e117255	57	struct ns_ifaddr ns;
cab3a575 MK	58	} ifaddr;
cab3a575 MK	59	off_t ifaddraddr;
3e117255	60	struct sockaddr *sa;
55bef820 SL	61	char name[16];
	62
	63	if (ifnetaddr == 0) {
	64	printf("ifnet: symbol not defined\n");
	65	return;
	66	}
	67	if (interval) {
39fef23d	68	sidewaysintpr((unsigned)interval, ifnetaddr);
55bef820 SL	69	return;
	70	}
	71	klseek(kmem, ifnetaddr, 0);
39fef23d	72	read(kmem, (char *)&ifnetaddr, sizeof ifnetaddr);
1ecc0948	73	printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s",
55bef820 SL	74	"Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
55bef820 SL	75	"Opkts", "Oerrs");
1ecc0948	76	printf(" %5s", "Coll");
55bef820	77	if (tflag)
1ecc0948	78	printf(" %s", "Time");
2ebaad6c MK	79	if (dflag)
2ebaad6c MK	80	printf(" %s", "Drop");
55bef820	81	putchar('\n');
cab3a575 MK	82	ifaddraddr = 0;
cab3a575 MK	83	while (ifnetaddr \|\| ifaddraddr) {
55bef820 SL	84	struct sockaddr_in *sin;
55bef820 SL	85	register char *cp;
7eeb8bb9	86	int n, m;
3e117255 MT	87	char *index();
3e117255 MT	88	struct in_addr inet_makeaddr();
55bef820	89
cab3a575 MK	90	if (ifaddraddr == 0) {
cab3a575 MK	91	klseek(kmem, ifnetaddr, 0);
39fef23d	92	read(kmem, (char *)&ifnet, sizeof ifnet);
cab3a575 MK	93	klseek(kmem, (off_t)ifnet.if_name, 0);
	94	read(kmem, name, 16);
	95	name[15] = '\0';
	96	ifnetaddr = (off_t) ifnet.if_next;
	97	if (interface != 0 &&
	98	(strcmp(name, interface) != 0 \|\| unit != ifnet.if_unit))
	99	continue;
	100	cp = index(name, '\0');
	101	*cp++ = ifnet.if_unit + '0';
	102	if ((ifnet.if_flags&IFF_UP) == 0)
	103	cp++ = '';
	104	*cp = '\0';
	105	ifaddraddr = (off_t)ifnet.if_addrlist;
	106	}
55bef820	107	printf("%-5.5s %-5d ", name, ifnet.if_mtu);
cab3a575	108	if (ifaddraddr == 0) {
1ecc0948 MK	109	printf("%-11.11s ", "none");
1ecc0948 MK	110	printf("%-15.15s ", "none");
cab3a575 MK	111	} else {
cab3a575 MK	112	klseek(kmem, ifaddraddr, 0);
39fef23d	113	read(kmem, (char *)&ifaddr, sizeof ifaddr);
3e117255 MT	114	#define CP(x) ((char *)(x))
	115	cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
	116	CP(&ifaddr); sa = (struct sockaddr *)cp;
	117	switch (sa->sa_family) {
cab3a575	118	case AF_UNSPEC:
1ecc0948 MK	119	printf("%-11.11s ", "none");
1ecc0948 MK	120	printf("%-15.15s ", "none");
cab3a575 MK	121	break;
cab3a575 MK	122	case AF_INET:
3e117255	123	sin = (struct sockaddr_in *)sa;
cab3a575 MK	124	#ifdef notdef
	125	/* can't use inet_makeaddr because kernel
	126	* keeps nets unshifted.
	127	*/
	128	in = inet_makeaddr(ifaddr.in.ia_subnet,
	129	INADDR_ANY);
1ecc0948	130	printf("%-11.11s ", netname(in));
cab3a575	131	#else
1ecc0948	132	printf("%-11.11s ",
cab3a575 MK	133	netname(htonl(ifaddr.in.ia_subnet),
	134	ifaddr.in.ia_subnetmask));
	135	#endif
1ecc0948	136	printf("%-15.15s ", routename(sin->sin_addr));
cab3a575	137	break;
f1fbb01b KS	138	case AF_NS:
	139	{
	140	struct sockaddr_ns *sns =
3e117255	141	(struct sockaddr_ns *)sa;
39fef23d	142	u_long net;
1ecc0948	143	char netnum[8];
39fef23d MK	144	char *ns_phost();
39fef23d MK	145
2ff355d6	146	(union ns_net ) &net = sns->sns_addr.x_net;
3e117255	147	sprintf(netnum, "%lxH", ntohl(net));
1ecc0948 MK	148	upHex(netnum);
	149	printf("ns:%-8s ", netnum);
	150	printf("%-15s ", ns_phost(sns));
f1fbb01b KS	151	}
f1fbb01b KS	152	break;
7eeb8bb9 KS	153	case AF_LINK:
	154	{
	155	struct sockaddr_dl *sdl =
	156	(struct sockaddr_dl *)sa;
80b7fcad KS	157	cp = (char *)LLADDR(sdl);
80b7fcad KS	158	n = sdl->sdl_alen;
7eeb8bb9	159	}
80b7fcad KS	160	m = printf("<Link>");
80b7fcad KS	161	goto hexprint;
cab3a575	162	default:
80b7fcad KS	163	m = printf("(%d)", sa->sa_family);
	164	for (cp = sa->sa_len + (char *)sa;
	165	--cp > sa->sa_data && (*cp == 0);) {}
3e117255 MT	166	n = cp - sa->sa_data + 1;
3e117255 MT	167	cp = sa->sa_data;
7eeb8bb9	168	hexprint:
80b7fcad KS	169	while (--n >= 0)
	170	m += printf("%x%c", *cp++ & 0xff,
	171	n > 0 ? '.' : ' ');
	172	m = 28 - m;
7eeb8bb9 KS	173	while (m-- > 0)
7eeb8bb9 KS	174	putchar(' ');
cab3a575 MK	175	break;
cab3a575 MK	176	}
3e117255	177	ifaddraddr = (off_t)ifaddr.ifa.ifa_next;
cab3a575	178	}
1ecc0948	179	printf("%8d %5d %8d %5d %5d",
55bef820 SL	180	ifnet.if_ipackets, ifnet.if_ierrors,
	181	ifnet.if_opackets, ifnet.if_oerrors,
	182	ifnet.if_collisions);
	183	if (tflag)
1ecc0948	184	printf(" %3d", ifnet.if_timer);
2ebaad6c MK	185	if (dflag)
2ebaad6c MK	186	printf(" %3d", ifnet.if_snd.ifq_drops);
55bef820	187	putchar('\n');
55bef820 SL	188	}
	189	}
	190
90cb8200 SL	191	#define MAXIF 10
	192	struct iftot {
	193	char ift_name[16]; /* interface name */
	194	int ift_ip; /* input packets */
	195	int ift_ie; /* input errors */
	196	int ift_op; /* output packets */
	197	int ift_oe; /* output errors */
	198	int ift_co; /* collisions */
2ebaad6c	199	int ift_dr; /* drops */
90cb8200 SL	200	} iftot[MAXIF];
90cb8200 SL	201
39fef23d MK	202	u_char signalled; /* set if alarm goes off "early" */
39fef23d MK	203
90cb8200 SL	204	/*
90cb8200 SL	205	* Print a running summary of interface statistics.
39fef23d MK	206	* Repeat display every interval seconds, showing statistics
	207	* collected over that interval. Assumes that interval is non-zero.
	208	* First line printed at top of screen is always cumulative.
90cb8200	209	*/
55bef820	210	sidewaysintpr(interval, off)
39fef23d	211	unsigned interval;
55bef820 SL	212	off_t off;
	213	{
	214	struct ifnet ifnet;
90cb8200	215	off_t firstifnet;
90cb8200 SL	216	register struct iftot ip, total;
	217	register int line;
	218	struct iftot lastif, sum, *interesting;
39fef23d MK	219	int oldmask;
39fef23d MK	220	int catchalarm();
55bef820 SL	221
55bef820 SL	222	klseek(kmem, off, 0);
39fef23d	223	read(kmem, (char *)&firstifnet, sizeof (off_t));
90cb8200 SL	224	lastif = iftot;
	225	sum = iftot + MAXIF - 1;
	226	total = sum - 1;
79ddba48	227	interesting = iftot;
90cb8200 SL	228	for (off = firstifnet, ip = iftot; off;) {
90cb8200 SL	229	char *cp;
55bef820 SL	230
55bef820 SL	231	klseek(kmem, off, 0);
39fef23d MK	232	read(kmem, (char *)&ifnet, sizeof ifnet);
39fef23d MK	233	klseek(kmem, (off_t)ifnet.if_name, 0);
90cb8200 SL	234	ip->ift_name[0] = '(';
90cb8200 SL	235	read(kmem, ip->ift_name + 1, 15);
79ddba48 EW	236	if (interface && strcmp(ip->ift_name + 1, interface) == 0 &&
	237	unit == ifnet.if_unit)
	238	interesting = ip;
90cb8200 SL	239	ip->ift_name[15] = '\0';
	240	cp = index(ip->ift_name, '\0');
	241	sprintf(cp, "%d)", ifnet.if_unit);
	242	ip++;
	243	if (ip >= iftot + MAXIF - 2)
	244	break;
	245	off = (off_t) ifnet.if_next;
	246	}
	247	lastif = ip;
39fef23d MK	248
	249	(void)signal(SIGALRM, catchalarm);
	250	signalled = NO;
	251	(void)alarm(interval);
90cb8200	252	banner:
2ebaad6c MK	253	printf(" input %-6.6s output ", interesting->ift_name);
	254	if (lastif - iftot > 0) {
	255	if (dflag)
	256	printf(" ");
	257	printf(" input (Total) output");
	258	}
90cb8200 SL	259	for (ip = iftot; ip < iftot + MAXIF; ip++) {
	260	ip->ift_ip = 0;
	261	ip->ift_ie = 0;
	262	ip->ift_op = 0;
	263	ip->ift_oe = 0;
	264	ip->ift_co = 0;
2ebaad6c	265	ip->ift_dr = 0;
90cb8200 SL	266	}
90cb8200 SL	267	putchar('\n');
1ecc0948	268	printf("%8.8s %5.5s %8.8s %5.5s %5.5s ",
90cb8200	269	"packets", "errs", "packets", "errs", "colls");
2ebaad6c MK	270	if (dflag)
2ebaad6c MK	271	printf("%5.5s ", "drops");
90cb8200	272	if (lastif - iftot > 0)
2ebaad6c	273	printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
90cb8200	274	"packets", "errs", "packets", "errs", "colls");
2ebaad6c MK	275	if (dflag)
2ebaad6c MK	276	printf(" %5.5s", "drops");
90cb8200 SL	277	putchar('\n');
	278	fflush(stdout);
	279	line = 0;
	280	loop:
	281	sum->ift_ip = 0;
	282	sum->ift_ie = 0;
	283	sum->ift_op = 0;
	284	sum->ift_oe = 0;
	285	sum->ift_co = 0;
2ebaad6c	286	sum->ift_dr = 0;
90cb8200 SL	287	for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
90cb8200 SL	288	klseek(kmem, off, 0);
39fef23d	289	read(kmem, (char *)&ifnet, sizeof ifnet);
2ebaad6c MK	290	if (ip == interesting) {
2ebaad6c MK	291	printf("%8d %5d %8d %5d %5d",
90cb8200 SL	292	ifnet.if_ipackets - ip->ift_ip,
	293	ifnet.if_ierrors - ip->ift_ie,
	294	ifnet.if_opackets - ip->ift_op,
	295	ifnet.if_oerrors - ip->ift_oe,
	296	ifnet.if_collisions - ip->ift_co);
2ebaad6c MK	297	if (dflag)
	298	printf(" %5d",
	299	ifnet.if_snd.ifq_drops - ip->ift_dr);
	300	}
90cb8200 SL	301	ip->ift_ip = ifnet.if_ipackets;
	302	ip->ift_ie = ifnet.if_ierrors;
	303	ip->ift_op = ifnet.if_opackets;
	304	ip->ift_oe = ifnet.if_oerrors;
	305	ip->ift_co = ifnet.if_collisions;
2ebaad6c	306	ip->ift_dr = ifnet.if_snd.ifq_drops;
90cb8200 SL	307	sum->ift_ip += ip->ift_ip;
	308	sum->ift_ie += ip->ift_ie;
	309	sum->ift_op += ip->ift_op;
	310	sum->ift_oe += ip->ift_oe;
	311	sum->ift_co += ip->ift_co;
2ebaad6c	312	sum->ift_dr += ip->ift_dr;
55bef820 SL	313	off = (off_t) ifnet.if_next;
55bef820 SL	314	}
2ebaad6c MK	315	if (lastif - iftot > 0) {
2ebaad6c MK	316	printf(" %8d %5d %8d %5d %5d",
90cb8200 SL	317	sum->ift_ip - total->ift_ip,
	318	sum->ift_ie - total->ift_ie,
	319	sum->ift_op - total->ift_op,
	320	sum->ift_oe - total->ift_oe,
	321	sum->ift_co - total->ift_co);
2ebaad6c MK	322	if (dflag)
	323	printf(" %5d", sum->ift_dr - total->ift_dr);
	324	}
90cb8200	325	total = sum;
1ecc0948	326	putchar('\n');
90cb8200 SL	327	fflush(stdout);
90cb8200 SL	328	line++;
39fef23d MK	329	oldmask = sigblock(sigmask(SIGALRM));
	330	if (! signalled) {
	331	sigpause(0);
	332	}
	333	sigsetmask(oldmask);
	334	signalled = NO;
	335	(void)alarm(interval);
90cb8200 SL	336	if (line == 21)
	337	goto banner;
	338	goto loop;
	339	/NOTREACHED/
55bef820	340	}
39fef23d MK	341
	342	/*
	343	* Called if an interval expires before sidewaysintpr has completed a loop.
	344	* Sets a flag to not wait for the alarm.
	345	*/
	346	catchalarm()
	347	{
	348	signalled = YES;
	349	}