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

/*
 * Copyright (c) 1983, 1988 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)if.c	5.15 (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 <netiso/iso.h>
#include <netiso/iso_var.h>

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

#define	YES	1
#define	NO	0

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

/*
 * 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;
		struct iso_ifaddr iso;
	} 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;
	}
	kvm_read(ifnetaddr, (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;
		struct in_addr inet_makeaddr();

		if (ifaddraddr == 0) {
			kvm_read(ifnetaddr, (char *)&ifnet, sizeof ifnet);
			kvm_read((off_t)ifnet.if_name, 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 {
			kvm_read(ifaddraddr, (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;
	void catchalarm();

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

		kvm_read(off, (char *)&ifnet, sizeof ifnet);
		ip->ift_name[0] = '(';
		kvm_read((off_t)ifnet.if_name, 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++) {
		kvm_read(off, (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.
 */
void
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.
ee3f90a5 MK	4	*
87198c0c	5	* %sccs.include.redist.c%
5ff67f98 DF	6	*/
5ff67f98 DF	7
55bef820	8	#ifndef lint
bc0c28c1	9	static char sccsid[] = "@(#)if.c 5.15 (Berkeley) %G%";
b36fc510	10	#endif /* not lint */
55bef820 SL	11
	12	#include <sys/types.h>
	13	#include <sys/socket.h>
44906619	14
55bef820	15	#include <net/if.h>
7eeb8bb9	16	#include <net/if_dl.h>
44906619	17	#include <netinet/in.h>
cab3a575	18	#include <netinet/in_var.h>
f1fbb01b	19	#include <netns/ns.h>
3e117255	20	#include <netns/ns_if.h>
c34ecf77 KS	21	#include <netiso/iso.h>
c34ecf77 KS	22	#include <netiso/iso_var.h>
44906619	23
90cb8200	24	#include <stdio.h>
39fef23d MK	25	#include <signal.h>
	26
	27	#define YES 1
	28	#define NO 0
55bef820	29
55bef820	30	extern int tflag;
2ebaad6c	31	extern int dflag;
55bef820	32	extern int nflag;
79ddba48 EW	33	extern char *interface;
79ddba48 EW	34	extern int unit;
39fef23d	35	extern char routename(), netname(), *ns_phost();
bc0c28c1	36	char *index();
55bef820 SL	37
	38	/*
	39	* Print a description of the network interfaces.
55bef820 SL	40	*/
	41	intpr(interval, ifnetaddr)
	42	int interval;
	43	off_t ifnetaddr;
	44	{
	45	struct ifnet ifnet;
cab3a575 MK	46	union {
	47	struct ifaddr ifa;
	48	struct in_ifaddr in;
3e117255	49	struct ns_ifaddr ns;
c34ecf77	50	struct iso_ifaddr iso;
cab3a575 MK	51	} ifaddr;
cab3a575 MK	52	off_t ifaddraddr;
3e117255	53	struct sockaddr *sa;
55bef820 SL	54	char name[16];
	55
	56	if (ifnetaddr == 0) {
	57	printf("ifnet: symbol not defined\n");
	58	return;
	59	}
	60	if (interval) {
39fef23d	61	sidewaysintpr((unsigned)interval, ifnetaddr);
55bef820 SL	62	return;
55bef820 SL	63	}
c34ecf77	64	kvm_read(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr);
1ecc0948	65	printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s",
55bef820 SL	66	"Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
55bef820 SL	67	"Opkts", "Oerrs");
1ecc0948	68	printf(" %5s", "Coll");
55bef820	69	if (tflag)
1ecc0948	70	printf(" %s", "Time");
2ebaad6c MK	71	if (dflag)
2ebaad6c MK	72	printf(" %s", "Drop");
55bef820	73	putchar('\n');
cab3a575 MK	74	ifaddraddr = 0;
cab3a575 MK	75	while (ifnetaddr \|\| ifaddraddr) {
55bef820 SL	76	struct sockaddr_in *sin;
55bef820 SL	77	register char *cp;
7eeb8bb9	78	int n, m;
3e117255	79	struct in_addr inet_makeaddr();
55bef820	80
cab3a575	81	if (ifaddraddr == 0) {
c34ecf77 KS	82	kvm_read(ifnetaddr, (char *)&ifnet, sizeof ifnet);
c34ecf77 KS	83	kvm_read((off_t)ifnet.if_name, name, 16);
cab3a575 MK	84	name[15] = '\0';
	85	ifnetaddr = (off_t) ifnet.if_next;
	86	if (interface != 0 &&
	87	(strcmp(name, interface) != 0 \|\| unit != ifnet.if_unit))
	88	continue;
	89	cp = index(name, '\0');
	90	*cp++ = ifnet.if_unit + '0';
	91	if ((ifnet.if_flags&IFF_UP) == 0)
	92	cp++ = '';
	93	*cp = '\0';
	94	ifaddraddr = (off_t)ifnet.if_addrlist;
	95	}
55bef820	96	printf("%-5.5s %-5d ", name, ifnet.if_mtu);
cab3a575	97	if (ifaddraddr == 0) {
1ecc0948 MK	98	printf("%-11.11s ", "none");
1ecc0948 MK	99	printf("%-15.15s ", "none");
cab3a575	100	} else {
c34ecf77	101	kvm_read(ifaddraddr, (char *)&ifaddr, sizeof ifaddr);
3e117255 MT	102	#define CP(x) ((char *)(x))
	103	cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
	104	CP(&ifaddr); sa = (struct sockaddr *)cp;
	105	switch (sa->sa_family) {
cab3a575	106	case AF_UNSPEC:
1ecc0948 MK	107	printf("%-11.11s ", "none");
1ecc0948 MK	108	printf("%-15.15s ", "none");
cab3a575 MK	109	break;
cab3a575 MK	110	case AF_INET:
3e117255	111	sin = (struct sockaddr_in *)sa;
cab3a575 MK	112	#ifdef notdef
	113	/* can't use inet_makeaddr because kernel
	114	* keeps nets unshifted.
	115	*/
	116	in = inet_makeaddr(ifaddr.in.ia_subnet,
	117	INADDR_ANY);
1ecc0948	118	printf("%-11.11s ", netname(in));
cab3a575	119	#else
1ecc0948	120	printf("%-11.11s ",
cab3a575 MK	121	netname(htonl(ifaddr.in.ia_subnet),
	122	ifaddr.in.ia_subnetmask));
	123	#endif
1ecc0948	124	printf("%-15.15s ", routename(sin->sin_addr));
cab3a575	125	break;
f1fbb01b KS	126	case AF_NS:
	127	{
	128	struct sockaddr_ns *sns =
3e117255	129	(struct sockaddr_ns *)sa;
39fef23d	130	u_long net;
1ecc0948	131	char netnum[8];
39fef23d MK	132	char *ns_phost();
39fef23d MK	133
2ff355d6	134	(union ns_net ) &net = sns->sns_addr.x_net;
3e117255	135	sprintf(netnum, "%lxH", ntohl(net));
1ecc0948 MK	136	upHex(netnum);
	137	printf("ns:%-8s ", netnum);
	138	printf("%-15s ", ns_phost(sns));
f1fbb01b KS	139	}
f1fbb01b KS	140	break;
7eeb8bb9 KS	141	case AF_LINK:
	142	{
	143	struct sockaddr_dl *sdl =
	144	(struct sockaddr_dl *)sa;
80b7fcad KS	145	cp = (char *)LLADDR(sdl);
80b7fcad KS	146	n = sdl->sdl_alen;
7eeb8bb9	147	}
80b7fcad KS	148	m = printf("<Link>");
80b7fcad KS	149	goto hexprint;
cab3a575	150	default:
80b7fcad KS	151	m = printf("(%d)", sa->sa_family);
	152	for (cp = sa->sa_len + (char *)sa;
	153	--cp > sa->sa_data && (*cp == 0);) {}
3e117255 MT	154	n = cp - sa->sa_data + 1;
3e117255 MT	155	cp = sa->sa_data;
7eeb8bb9	156	hexprint:
80b7fcad KS	157	while (--n >= 0)
	158	m += printf("%x%c", *cp++ & 0xff,
	159	n > 0 ? '.' : ' ');
	160	m = 28 - m;
7eeb8bb9 KS	161	while (m-- > 0)
7eeb8bb9 KS	162	putchar(' ');
cab3a575 MK	163	break;
cab3a575 MK	164	}
3e117255	165	ifaddraddr = (off_t)ifaddr.ifa.ifa_next;
cab3a575	166	}
1ecc0948	167	printf("%8d %5d %8d %5d %5d",
55bef820 SL	168	ifnet.if_ipackets, ifnet.if_ierrors,
	169	ifnet.if_opackets, ifnet.if_oerrors,
	170	ifnet.if_collisions);
	171	if (tflag)
1ecc0948	172	printf(" %3d", ifnet.if_timer);
2ebaad6c MK	173	if (dflag)
2ebaad6c MK	174	printf(" %3d", ifnet.if_snd.ifq_drops);
55bef820	175	putchar('\n');
55bef820 SL	176	}
	177	}
	178
90cb8200 SL	179	#define MAXIF 10
	180	struct iftot {
	181	char ift_name[16]; /* interface name */
	182	int ift_ip; /* input packets */
	183	int ift_ie; /* input errors */
	184	int ift_op; /* output packets */
	185	int ift_oe; /* output errors */
	186	int ift_co; /* collisions */
2ebaad6c	187	int ift_dr; /* drops */
90cb8200 SL	188	} iftot[MAXIF];
90cb8200 SL	189
39fef23d MK	190	u_char signalled; /* set if alarm goes off "early" */
39fef23d MK	191
90cb8200 SL	192	/*
90cb8200 SL	193	* Print a running summary of interface statistics.
39fef23d MK	194	* Repeat display every interval seconds, showing statistics
	195	* collected over that interval. Assumes that interval is non-zero.
	196	* First line printed at top of screen is always cumulative.
90cb8200	197	*/
55bef820	198	sidewaysintpr(interval, off)
39fef23d	199	unsigned interval;
55bef820 SL	200	off_t off;
	201	{
	202	struct ifnet ifnet;
90cb8200	203	off_t firstifnet;
90cb8200 SL	204	register struct iftot ip, total;
	205	register int line;
	206	struct iftot lastif, sum, *interesting;
39fef23d	207	int oldmask;
bc0c28c1	208	void catchalarm();
55bef820	209
c34ecf77	210	kvm_read(off, (char *)&firstifnet, sizeof (off_t));
90cb8200 SL	211	lastif = iftot;
	212	sum = iftot + MAXIF - 1;
	213	total = sum - 1;
79ddba48	214	interesting = iftot;
90cb8200 SL	215	for (off = firstifnet, ip = iftot; off;) {
90cb8200 SL	216	char *cp;
55bef820	217
c34ecf77	218	kvm_read(off, (char *)&ifnet, sizeof ifnet);
90cb8200	219	ip->ift_name[0] = '(';
c34ecf77	220	kvm_read((off_t)ifnet.if_name, ip->ift_name + 1, 15);
79ddba48 EW	221	if (interface && strcmp(ip->ift_name + 1, interface) == 0 &&
	222	unit == ifnet.if_unit)
	223	interesting = ip;
90cb8200 SL	224	ip->ift_name[15] = '\0';
	225	cp = index(ip->ift_name, '\0');
	226	sprintf(cp, "%d)", ifnet.if_unit);
	227	ip++;
	228	if (ip >= iftot + MAXIF - 2)
	229	break;
	230	off = (off_t) ifnet.if_next;
	231	}
	232	lastif = ip;
39fef23d MK	233
	234	(void)signal(SIGALRM, catchalarm);
	235	signalled = NO;
	236	(void)alarm(interval);
90cb8200	237	banner:
2ebaad6c MK	238	printf(" input %-6.6s output ", interesting->ift_name);
	239	if (lastif - iftot > 0) {
	240	if (dflag)
	241	printf(" ");
	242	printf(" input (Total) output");
	243	}
90cb8200 SL	244	for (ip = iftot; ip < iftot + MAXIF; ip++) {
	245	ip->ift_ip = 0;
	246	ip->ift_ie = 0;
	247	ip->ift_op = 0;
	248	ip->ift_oe = 0;
	249	ip->ift_co = 0;
2ebaad6c	250	ip->ift_dr = 0;
90cb8200 SL	251	}
90cb8200 SL	252	putchar('\n');
1ecc0948	253	printf("%8.8s %5.5s %8.8s %5.5s %5.5s ",
90cb8200	254	"packets", "errs", "packets", "errs", "colls");
2ebaad6c MK	255	if (dflag)
2ebaad6c MK	256	printf("%5.5s ", "drops");
90cb8200	257	if (lastif - iftot > 0)
2ebaad6c	258	printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
90cb8200	259	"packets", "errs", "packets", "errs", "colls");
2ebaad6c MK	260	if (dflag)
2ebaad6c MK	261	printf(" %5.5s", "drops");
90cb8200 SL	262	putchar('\n');
	263	fflush(stdout);
	264	line = 0;
	265	loop:
	266	sum->ift_ip = 0;
	267	sum->ift_ie = 0;
	268	sum->ift_op = 0;
	269	sum->ift_oe = 0;
	270	sum->ift_co = 0;
2ebaad6c	271	sum->ift_dr = 0;
90cb8200	272	for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
c34ecf77	273	kvm_read(off, (char *)&ifnet, sizeof ifnet);
2ebaad6c MK	274	if (ip == interesting) {
2ebaad6c MK	275	printf("%8d %5d %8d %5d %5d",
90cb8200 SL	276	ifnet.if_ipackets - ip->ift_ip,
	277	ifnet.if_ierrors - ip->ift_ie,
	278	ifnet.if_opackets - ip->ift_op,
	279	ifnet.if_oerrors - ip->ift_oe,
	280	ifnet.if_collisions - ip->ift_co);
2ebaad6c MK	281	if (dflag)
	282	printf(" %5d",
	283	ifnet.if_snd.ifq_drops - ip->ift_dr);
	284	}
90cb8200 SL	285	ip->ift_ip = ifnet.if_ipackets;
	286	ip->ift_ie = ifnet.if_ierrors;
	287	ip->ift_op = ifnet.if_opackets;
	288	ip->ift_oe = ifnet.if_oerrors;
	289	ip->ift_co = ifnet.if_collisions;
2ebaad6c	290	ip->ift_dr = ifnet.if_snd.ifq_drops;
90cb8200 SL	291	sum->ift_ip += ip->ift_ip;
	292	sum->ift_ie += ip->ift_ie;
	293	sum->ift_op += ip->ift_op;
	294	sum->ift_oe += ip->ift_oe;
	295	sum->ift_co += ip->ift_co;
2ebaad6c	296	sum->ift_dr += ip->ift_dr;
55bef820 SL	297	off = (off_t) ifnet.if_next;
55bef820 SL	298	}
2ebaad6c MK	299	if (lastif - iftot > 0) {
2ebaad6c MK	300	printf(" %8d %5d %8d %5d %5d",
90cb8200 SL	301	sum->ift_ip - total->ift_ip,
	302	sum->ift_ie - total->ift_ie,
	303	sum->ift_op - total->ift_op,
	304	sum->ift_oe - total->ift_oe,
	305	sum->ift_co - total->ift_co);
2ebaad6c MK	306	if (dflag)
	307	printf(" %5d", sum->ift_dr - total->ift_dr);
	308	}
90cb8200	309	total = sum;
1ecc0948	310	putchar('\n');
90cb8200 SL	311	fflush(stdout);
90cb8200 SL	312	line++;
39fef23d MK	313	oldmask = sigblock(sigmask(SIGALRM));
	314	if (! signalled) {
	315	sigpause(0);
	316	}
	317	sigsetmask(oldmask);
	318	signalled = NO;
	319	(void)alarm(interval);
90cb8200 SL	320	if (line == 21)
	321	goto banner;
	322	goto loop;
	323	/NOTREACHED/
55bef820	324	}
39fef23d MK	325
	326	/*
	327	* Called if an interval expires before sidewaysintpr has completed a loop.
	328	* Sets a flag to not wait for the alarm.
	329	*/
bc0c28c1	330	void
39fef23d MK	331	catchalarm()
	332	{
	333	signalled = YES;
	334	}