xref: /netbsd-src/usr.bin/systat/ifstat.c (revision b31382fbd7cd8d19528694abd61e4df7cca1a633)
1*b31382fbSchristos /*	$NetBSD: ifstat.c,v 1.4 2016/08/05 07:22:17 christos Exp $	*/
26f3aa0fcSscole 
3bd7662dcSscole /*
4bd7662dcSscole  * Copyright (c) 2003, Trent Nelson, <trent@arpa.com>.
5bd7662dcSscole  * All rights reserved.
6bd7662dcSscole  *
7bd7662dcSscole  * Redistribution and use in source and binary forms, with or without
8bd7662dcSscole  * modification, are permitted provided that the following conditions
9bd7662dcSscole  * are met:
10bd7662dcSscole  * 1. Redistributions of source code must retain the above copyright
11bd7662dcSscole  *    notice, this list of conditions and the following disclaimer.
12bd7662dcSscole  * 2. Redistributions in binary form must reproduce the above copyright
13bd7662dcSscole  *    notice, this list of conditions and the following disclaimer in the
14bd7662dcSscole  *    documentation and/or other materials provided with the distribution.
15bd7662dcSscole  * 3. The name of the author may not be used to endorse or promote products
16bd7662dcSscole  *    derived from this software without specific prior written permission.
17bd7662dcSscole  *
18bd7662dcSscole  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19bd7662dcSscole  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20bd7662dcSscole  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21bd7662dcSscole  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22bd7662dcSscole  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23bd7662dcSscole  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24bd7662dcSscole  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTIFSTAT_ERRUPTION)
25bd7662dcSscole  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26bd7662dcSscole  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27bd7662dcSscole  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28bd7662dcSscole  * SUCH DAMAGE.
29bd7662dcSscole  *
30bd7662dcSscole  * $FreeBSD: releng/10.1/usr.bin/systat/ifstat.c 247037 2013-02-20 14:19:09Z melifaro $
31bd7662dcSscole  */
32bd7662dcSscole 
33bd7662dcSscole #include <sys/cdefs.h>
34bd7662dcSscole #ifndef lint
35*b31382fbSchristos __RCSID("$NetBSD: ifstat.c,v 1.4 2016/08/05 07:22:17 christos Exp $");
36bd7662dcSscole #endif /* not lint */
37bd7662dcSscole 
38bd7662dcSscole #include <sys/types.h>
39bd7662dcSscole #include <sys/socket.h>
40bd7662dcSscole #include <sys/sysctl.h>
41bd7662dcSscole #include <sys/time.h>
42bd7662dcSscole #include <net/if.h>
43bd7662dcSscole 
44bd7662dcSscole #include <ifaddrs.h>
45bd7662dcSscole #include <stdlib.h>
46bd7662dcSscole #include <string.h>
47bd7662dcSscole #include <err.h>
48bd7662dcSscole #include <errno.h>
49bd7662dcSscole #include <fnmatch.h>
50bd7662dcSscole 
51bd7662dcSscole #include "systat.h"
52bd7662dcSscole #include "extern.h"
53bd7662dcSscole #include "convtbl.h"
54bd7662dcSscole 
55bd7662dcSscole 				/* Column numbers */
56bd7662dcSscole 
57bd7662dcSscole #define C1	0		/*  0-19 */
58bd7662dcSscole #define C2	20		/* 20-39 */
59bd7662dcSscole #define C3	40		/* 40-59 */
60bd7662dcSscole #define C4	60		/* 60-80 */
61bd7662dcSscole #define C5	80		/* Used for label positioning. */
62bd7662dcSscole 
63bd7662dcSscole static const int col2 = C2;
64bd7662dcSscole static const int col3 = C3;
65bd7662dcSscole static const int col4 = C4;
66bd7662dcSscole 
67bd7662dcSscole SLIST_HEAD(, if_stat)		curlist;
68bd7662dcSscole 
69bd7662dcSscole struct if_stat {
70bd7662dcSscole 	SLIST_ENTRY(if_stat)	 link;
71bd7662dcSscole   	char	if_name[IF_NAMESIZE];
72bd7662dcSscole 	struct  ifdatareq if_mib;
73bd7662dcSscole 	struct	timeval tv;
74bd7662dcSscole 	struct	timeval tv_lastchanged;
75bd7662dcSscole 	u_long	if_in_curtraffic;
76bd7662dcSscole 	u_long	if_out_curtraffic;
77bd7662dcSscole 	u_long	if_in_traffic_peak;
78bd7662dcSscole 	u_long	if_out_traffic_peak;
79bd7662dcSscole 	u_long	if_in_curpps;
80bd7662dcSscole 	u_long	if_out_curpps;
81bd7662dcSscole 	u_long	if_in_pps_peak;
82bd7662dcSscole 	u_long	if_out_pps_peak;
83bd7662dcSscole 	u_int	if_row;			/* Index into ifmib sysctl */
84bd7662dcSscole 	u_int	if_ypos;		/* 0 if not being displayed */
85bd7662dcSscole 	u_int	display;
86bd7662dcSscole 	u_int	match;
87bd7662dcSscole };
88bd7662dcSscole 
89bd7662dcSscole extern	 int curscale;
90bd7662dcSscole extern	 char *matchline;
91bd7662dcSscole extern	 int showpps;
92bd7662dcSscole extern	 int needsort;
93bd7662dcSscole 
94bd7662dcSscole static	 int needclear = 0;
95bd7662dcSscole 
96bd7662dcSscole static	 void  right_align_string(struct if_stat *);
97bd7662dcSscole static	 void  getifmibdata(const int, struct ifdatareq *);
98bd7662dcSscole static	 void  sort_interface_list(void);
99bd7662dcSscole static	 u_int getifnum(void);
100bd7662dcSscole 
101bd7662dcSscole #define IFSTAT_ERR(n, s)	do {					\
102bd7662dcSscole 	putchar('\014');						\
103bd7662dcSscole 	closeifstat(wnd);						\
104bd7662dcSscole 	err((n), (s));							\
105bd7662dcSscole } while (0)
106bd7662dcSscole 
107bd7662dcSscole #define TOPLINE 5
108bd7662dcSscole #define TOPLABEL \
109bd7662dcSscole "      Interface           Traffic               Peak                Total"
110bd7662dcSscole 
111bd7662dcSscole #define STARTING_ROW	(TOPLINE + 1)
112bd7662dcSscole #define ROW_SPACING	(3)
113bd7662dcSscole 
114bd7662dcSscole #define IN_col2		(showpps ? ifp->if_in_curpps : ifp->if_in_curtraffic)
115bd7662dcSscole #define OUT_col2	(showpps ? ifp->if_out_curpps : ifp->if_out_curtraffic)
116bd7662dcSscole #define IN_col3		(showpps ? \
117bd7662dcSscole 		ifp->if_in_pps_peak : ifp->if_in_traffic_peak)
118bd7662dcSscole #define OUT_col3	(showpps ? \
119bd7662dcSscole 		ifp->if_out_pps_peak : ifp->if_out_traffic_peak)
120bd7662dcSscole #define IN_col4		(showpps ?				\
121bd7662dcSscole 	ifp->if_mib.ifdr_data.ifi_ipackets : ifp->if_mib.ifdr_data.ifi_ibytes)
122bd7662dcSscole #define OUT_col4	(showpps ?					\
123bd7662dcSscole 	ifp->if_mib.ifdr_data.ifi_opackets : ifp->if_mib.ifdr_data.ifi_obytes)
124bd7662dcSscole 
125bd7662dcSscole #define EMPTY_COLUMN 	"                    "
126bd7662dcSscole #define CLEAR_COLUMN(y, x)	mvprintw((y), (x), "%20s", EMPTY_COLUMN);
127bd7662dcSscole 
128bd7662dcSscole #define DOPUTRATE(c, r, d)	do {					\
129bd7662dcSscole 	CLEAR_COLUMN(r, c);						\
130bd7662dcSscole 	if (showpps) {							\
131bd7662dcSscole 		mvprintw(r, (c), "%10.3f %cp%s  ",			\
132bd7662dcSscole 			 convert(d##_##c, curscale),			\
133bd7662dcSscole 			 *get_string(d##_##c, curscale),		\
134bd7662dcSscole 			 "/s");						\
135bd7662dcSscole 	}								\
136bd7662dcSscole 	else {								\
137bd7662dcSscole 		mvprintw(r, (c), "%10.3f %s%s  ",			\
138bd7662dcSscole 			 convert(d##_##c, curscale),			\
139bd7662dcSscole 			 get_string(d##_##c, curscale),			\
140bd7662dcSscole 			 "/s");						\
141bd7662dcSscole 	}								\
142bd7662dcSscole } while (0)
143bd7662dcSscole 
144bd7662dcSscole #define DOPUTTOTAL(c, r, d)	do {					\
145bd7662dcSscole 	CLEAR_COLUMN((r), (c));						\
146bd7662dcSscole 	if (showpps) {							\
147bd7662dcSscole 		mvprintw((r), (c), "%12.3f %cp  ",			\
148bd7662dcSscole 			 convert(d##_##c, SC_AUTO),			\
149bd7662dcSscole 			 *get_string(d##_##c, SC_AUTO));		\
150bd7662dcSscole 	}								\
151bd7662dcSscole 	else {								\
152bd7662dcSscole 		mvprintw((r), (c), "%12.3f %s  ",			\
153bd7662dcSscole 			 convert(d##_##c, SC_AUTO),			\
154bd7662dcSscole 			 get_string(d##_##c, SC_AUTO));			\
155bd7662dcSscole 	}								\
156bd7662dcSscole } while (0)
157bd7662dcSscole 
158bd7662dcSscole #define PUTRATE(c, r)	do {						\
159bd7662dcSscole 	DOPUTRATE(c, (r), IN);						\
160bd7662dcSscole 	DOPUTRATE(c, (r)+1, OUT);					\
161bd7662dcSscole } while (0)
162bd7662dcSscole 
163bd7662dcSscole #define PUTTOTAL(c, r)	do {						\
164bd7662dcSscole 	DOPUTTOTAL(c, (r), IN);						\
165bd7662dcSscole 	DOPUTTOTAL(c, (r)+1, OUT);					\
166bd7662dcSscole } while (0)
167bd7662dcSscole 
168bd7662dcSscole #define PUTNAME(p) do {							\
169bd7662dcSscole 	mvprintw(p->if_ypos, 0, "%s", p->if_name);			\
170bd7662dcSscole 	mvprintw(p->if_ypos, col2-3, "%s", (const char *)"in");		\
171bd7662dcSscole 	mvprintw(p->if_ypos+1, col2-3, "%s", (const char *)"out");	\
172bd7662dcSscole } while (0)
173bd7662dcSscole 
174bd7662dcSscole WINDOW *
openifstat(void)175bd7662dcSscole openifstat(void)
176bd7662dcSscole {
177bd7662dcSscole 	return (subwin(stdscr, -1, 0, 5, 0));
178bd7662dcSscole }
179bd7662dcSscole 
180bd7662dcSscole void
closeifstat(WINDOW * w)181bd7662dcSscole closeifstat(WINDOW *w)
182bd7662dcSscole {
183bd7662dcSscole 	struct if_stat	*node = NULL;
184bd7662dcSscole 
185bd7662dcSscole 	while (!SLIST_EMPTY(&curlist)) {
186bd7662dcSscole 		node = SLIST_FIRST(&curlist);
187bd7662dcSscole 		SLIST_REMOVE_HEAD(&curlist, link);
188bd7662dcSscole 		free(node);
189bd7662dcSscole 	}
190bd7662dcSscole 
191bd7662dcSscole 	if (w != NULL) {
192bd7662dcSscole 		wclear(w);
193bd7662dcSscole 		wrefresh(w);
194bd7662dcSscole 		delwin(w);
195bd7662dcSscole 	}
196bd7662dcSscole 
197bd7662dcSscole 	return;
198bd7662dcSscole }
199bd7662dcSscole 
200bd7662dcSscole void
labelifstat(void)201bd7662dcSscole labelifstat(void)
202bd7662dcSscole {
203bd7662dcSscole 
204bd7662dcSscole 	wmove(wnd, TOPLINE, 0);
205bd7662dcSscole 	wclrtoeol(wnd);
206bd7662dcSscole 	mvprintw(TOPLINE, 0, "%s", TOPLABEL);
207bd7662dcSscole 
208bd7662dcSscole 	return;
209bd7662dcSscole }
210bd7662dcSscole 
211bd7662dcSscole void
showifstat(void)212bd7662dcSscole showifstat(void)
213bd7662dcSscole {
214bd7662dcSscole 	struct	if_stat *ifp = NULL;
215bd7662dcSscole 
216bd7662dcSscole 	SLIST_FOREACH(ifp, &curlist, link) {
217bd7662dcSscole 		if (ifp->display == 0 || (ifp->match == 0) ||
218bd7662dcSscole 		    ifp->if_ypos > (u_int)(LINES - 3 - 1))
219bd7662dcSscole 			continue;
220bd7662dcSscole 		PUTNAME(ifp);
221bd7662dcSscole 		PUTRATE(col2, ifp->if_ypos);
222bd7662dcSscole 		PUTRATE(col3, ifp->if_ypos);
223bd7662dcSscole 		PUTTOTAL(col4, ifp->if_ypos);
224bd7662dcSscole 	}
225bd7662dcSscole 
226bd7662dcSscole 	return;
227bd7662dcSscole }
228bd7662dcSscole 
229bd7662dcSscole int
initifstat(void)230bd7662dcSscole initifstat(void)
231bd7662dcSscole {
232bd7662dcSscole 	struct   if_stat *p = NULL;
233bd7662dcSscole 	u_int	 n = 0, i = 0;
234bd7662dcSscole 
235bd7662dcSscole 	n = getifnum();
236bd7662dcSscole 	if (n <= 0)
237bd7662dcSscole 		return (-1);
238bd7662dcSscole 
239bd7662dcSscole 	SLIST_INIT(&curlist);
240bd7662dcSscole 
241bd7662dcSscole 	for (i = 0; i < n; i++) {
242bd7662dcSscole 		p = (struct if_stat *)calloc(1, sizeof(struct if_stat));
243bd7662dcSscole 		if (p == NULL)
244bd7662dcSscole 			IFSTAT_ERR(1, "out of memory");
245bd7662dcSscole 		SLIST_INSERT_HEAD(&curlist, p, link);
246bd7662dcSscole 		p->if_row = i+1;
247bd7662dcSscole 		getifmibdata(p->if_row, &p->if_mib);
248bd7662dcSscole 		right_align_string(p);
249bd7662dcSscole 		p->match = 1;
250bd7662dcSscole 
251bd7662dcSscole 		/*
252bd7662dcSscole 		 * Initially, we only display interfaces that have
253bd7662dcSscole 		 * received some traffic.
254bd7662dcSscole 		 */
255bd7662dcSscole 		if (p->if_mib.ifdr_data.ifi_ibytes != 0)
256bd7662dcSscole 			p->display = 1;
257bd7662dcSscole 	}
258bd7662dcSscole 
259bd7662dcSscole 	sort_interface_list();
260bd7662dcSscole 
261bd7662dcSscole 	return (1);
262bd7662dcSscole }
263bd7662dcSscole 
264bd7662dcSscole void
fetchifstat(void)265bd7662dcSscole fetchifstat(void)
266bd7662dcSscole {
267bd7662dcSscole 	struct	if_stat *ifp = NULL;
268bd7662dcSscole 	struct	timeval tv, new_tv, old_tv;
269bd7662dcSscole 	double	elapsed = 0.0;
270bd7662dcSscole 	u_int	new_inb, new_outb, old_inb, old_outb = 0;
271bd7662dcSscole 	u_int	new_inp, new_outp, old_inp, old_outp = 0;
272bd7662dcSscole 
273bd7662dcSscole 	SLIST_FOREACH(ifp, &curlist, link) {
274bd7662dcSscole 		/*
275bd7662dcSscole 		 * Grab a copy of the old input/output values before we
276bd7662dcSscole 		 * call getifmibdata().
277bd7662dcSscole 		 */
278bd7662dcSscole 		old_inb = ifp->if_mib.ifdr_data.ifi_ibytes;
279bd7662dcSscole 		old_outb = ifp->if_mib.ifdr_data.ifi_obytes;
280bd7662dcSscole 		old_inp = ifp->if_mib.ifdr_data.ifi_ipackets;
281bd7662dcSscole 		old_outp = ifp->if_mib.ifdr_data.ifi_opackets;
282bd7662dcSscole 		TIMESPEC_TO_TIMEVAL(&ifp->tv_lastchanged, &ifp->if_mib.ifdr_data.ifi_lastchange);
283bd7662dcSscole 
284bd7662dcSscole 		(void)gettimeofday(&new_tv, NULL);
285bd7662dcSscole 		(void)getifmibdata(ifp->if_row, &ifp->if_mib);
286bd7662dcSscole 
287bd7662dcSscole 		new_inb = ifp->if_mib.ifdr_data.ifi_ibytes;
288bd7662dcSscole 		new_outb = ifp->if_mib.ifdr_data.ifi_obytes;
289bd7662dcSscole 		new_inp = ifp->if_mib.ifdr_data.ifi_ipackets;
290bd7662dcSscole 		new_outp = ifp->if_mib.ifdr_data.ifi_opackets;
291bd7662dcSscole 
292bd7662dcSscole 		/* Display interface if it's received some traffic. */
293bd7662dcSscole 		if (new_inb > 0 && old_inb == 0) {
294bd7662dcSscole 			ifp->display = 1;
295bd7662dcSscole 			needsort = 1;
296bd7662dcSscole 		}
297bd7662dcSscole 
298bd7662dcSscole 		/*
299bd7662dcSscole 		 * The rest is pretty trivial.  Calculate the new values
300bd7662dcSscole 		 * for our current traffic rates, and while we're there,
301bd7662dcSscole 		 * see if we have new peak rates.
302bd7662dcSscole 		 */
303bd7662dcSscole 		old_tv = ifp->tv;
304bd7662dcSscole 		timersub(&new_tv, &old_tv, &tv);
305bd7662dcSscole 		elapsed = tv.tv_sec + (tv.tv_usec * 1e-6);
306bd7662dcSscole 
307bd7662dcSscole 		ifp->if_in_curtraffic = new_inb - old_inb;
308bd7662dcSscole 		ifp->if_out_curtraffic = new_outb - old_outb;
309bd7662dcSscole 
310bd7662dcSscole 		ifp->if_in_curpps = new_inp - old_inp;
311bd7662dcSscole 		ifp->if_out_curpps = new_outp - old_outp;
312bd7662dcSscole 
313bd7662dcSscole 		/*
314bd7662dcSscole 		 * Rather than divide by the time specified on the comm-
315bd7662dcSscole 		 * and line, we divide by ``elapsed'' as this is likely
316bd7662dcSscole 		 * to be more accurate.
317bd7662dcSscole 		 */
318bd7662dcSscole 		ifp->if_in_curtraffic /= elapsed;
319bd7662dcSscole 		ifp->if_out_curtraffic /= elapsed;
320bd7662dcSscole 		ifp->if_in_curpps /= elapsed;
321bd7662dcSscole 		ifp->if_out_curpps /= elapsed;
322bd7662dcSscole 
323bd7662dcSscole 		if (ifp->if_in_curtraffic > ifp->if_in_traffic_peak)
324bd7662dcSscole 			ifp->if_in_traffic_peak = ifp->if_in_curtraffic;
325bd7662dcSscole 
326bd7662dcSscole 		if (ifp->if_out_curtraffic > ifp->if_out_traffic_peak)
327bd7662dcSscole 			ifp->if_out_traffic_peak = ifp->if_out_curtraffic;
328bd7662dcSscole 
329bd7662dcSscole 		if (ifp->if_in_curpps > ifp->if_in_pps_peak)
330bd7662dcSscole 			ifp->if_in_pps_peak = ifp->if_in_curpps;
331bd7662dcSscole 
332bd7662dcSscole 		if (ifp->if_out_curpps > ifp->if_out_pps_peak)
333bd7662dcSscole 			ifp->if_out_pps_peak = ifp->if_out_curpps;
334bd7662dcSscole 
335bd7662dcSscole 		ifp->tv.tv_sec = new_tv.tv_sec;
336bd7662dcSscole 		ifp->tv.tv_usec = new_tv.tv_usec;
337bd7662dcSscole 
338bd7662dcSscole 	}
339bd7662dcSscole 
340bd7662dcSscole 	if (needsort)
341bd7662dcSscole 		sort_interface_list();
342bd7662dcSscole 
343bd7662dcSscole 	return;
344bd7662dcSscole }
345bd7662dcSscole 
346bd7662dcSscole /*
347bd7662dcSscole  * We want to right justify our interface names against the first column
348bd7662dcSscole  * (first sixteen or so characters), so we need to do some alignment.
349bd7662dcSscole  */
350bd7662dcSscole static void
right_align_string(struct if_stat * ifp)351bd7662dcSscole right_align_string(struct if_stat *ifp)
352bd7662dcSscole {
353ccf7078dSjakllsch 	if (ifp == NULL || ifp->if_mib.ifdr_name[0] == '\0')
354bd7662dcSscole 		return;
355bd7662dcSscole 
356*b31382fbSchristos 	snprintf(ifp->if_name, IF_NAMESIZE, "%*s", IF_NAMESIZE - 1,
357*b31382fbSchristos 	    ifp->if_mib.ifdr_name);
358bd7662dcSscole }
359bd7662dcSscole 
360bd7662dcSscole static int
check_match(const char * ifname)361bd7662dcSscole check_match(const char *ifname)
362bd7662dcSscole {
363bd7662dcSscole 	char *p = matchline, *c, t;
364bd7662dcSscole 	int match = 0, mlen;
365bd7662dcSscole 
366bd7662dcSscole 	if (matchline == NULL)
367bd7662dcSscole 		return (0);
368bd7662dcSscole 
369bd7662dcSscole 	/* Strip leading whitespaces */
370bd7662dcSscole 	while (*p == ' ')
371bd7662dcSscole 		p ++;
372bd7662dcSscole 
373bd7662dcSscole 	c = p;
374bd7662dcSscole 	while ((mlen = strcspn(c, " ;,")) != 0) {
375bd7662dcSscole 		p = c + mlen;
376bd7662dcSscole 		t = *p;
377bd7662dcSscole 		if (p - c > 0) {
378bd7662dcSscole 			*p = '\0';
379bd7662dcSscole 			if (fnmatch(c, ifname, FNM_CASEFOLD) == 0) {
380bd7662dcSscole 				*p = t;
381bd7662dcSscole 				return (1);
382bd7662dcSscole 			}
383bd7662dcSscole 			*p = t;
384bd7662dcSscole 			c = p + strspn(p, " ;,");
385bd7662dcSscole 		}
386bd7662dcSscole 		else {
387bd7662dcSscole 			c = p + strspn(p, " ;,");
388bd7662dcSscole 		}
389bd7662dcSscole 	}
390bd7662dcSscole 
391bd7662dcSscole 	return (match);
392bd7662dcSscole }
393bd7662dcSscole 
394bd7662dcSscole /*
395bd7662dcSscole  * This function iterates through our list of interfaces, identifying
396bd7662dcSscole  * those that are to be displayed (ifp->display = 1).  For each interf-
397bd7662dcSscole  * rface that we're displaying, we generate an appropriate position for
398bd7662dcSscole  * it on the screen (ifp->if_ypos).
399bd7662dcSscole  *
400bd7662dcSscole  * This function is called any time a change is made to an interface's
401bd7662dcSscole  * ``display'' state.
402bd7662dcSscole  */
403bd7662dcSscole void
sort_interface_list(void)404bd7662dcSscole sort_interface_list(void)
405bd7662dcSscole {
406bd7662dcSscole 	struct	if_stat	*ifp = NULL;
407bd7662dcSscole 	u_int	y = STARTING_ROW;
408bd7662dcSscole 
409bd7662dcSscole 	SLIST_FOREACH(ifp, &curlist, link) {
410bd7662dcSscole 		if (matchline && !check_match(ifp->if_mib.ifdr_name))
411bd7662dcSscole 			ifp->match = 0;
412bd7662dcSscole 		else
413bd7662dcSscole 			ifp->match = 1;
414bd7662dcSscole 		if (ifp->display && ifp->match) {
415bd7662dcSscole 			ifp->if_ypos = y;
416bd7662dcSscole 			y += ROW_SPACING;
417bd7662dcSscole 		}
418bd7662dcSscole 	}
419bd7662dcSscole 
420bd7662dcSscole 	needsort = 0;
421bd7662dcSscole 	needclear = 1;
422bd7662dcSscole }
423bd7662dcSscole 
424bd7662dcSscole static
425bd7662dcSscole unsigned int
getifnum(void)426bd7662dcSscole getifnum(void)
427bd7662dcSscole {
428bd7662dcSscole 	struct ifaddrs *ifaddrs = NULL;
429bd7662dcSscole 	struct ifaddrs *ifa = NULL;
430bd7662dcSscole 	int num = 0;
431bd7662dcSscole 
432bd7662dcSscole 	if (getifaddrs(&ifaddrs) == 0) {
433bd7662dcSscole 	  for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
434bd7662dcSscole 	    if (ifa->ifa_addr &&
435bd7662dcSscole 		ifa->ifa_addr->sa_family == AF_LINK)
436bd7662dcSscole 	      num++;
437bd7662dcSscole 	  }
438bd7662dcSscole 
439bd7662dcSscole 	  freeifaddrs(ifaddrs);
440bd7662dcSscole 	}
441bd7662dcSscole 
442bd7662dcSscole 	return num;
443bd7662dcSscole }
444bd7662dcSscole 
445bd7662dcSscole static void
getifmibdata(int row,struct ifdatareq * data)446bd7662dcSscole getifmibdata(int row, struct ifdatareq *data)
447bd7662dcSscole {
448bd7662dcSscole 	struct ifaddrs *ifaddrs = NULL;
449bd7662dcSscole 	struct ifaddrs *ifa = NULL;
450bd7662dcSscole 	int found = 0;
451bd7662dcSscole 	int num = 0;
452bd7662dcSscole 
453bd7662dcSscole 	if (getifaddrs(&ifaddrs) != 0) {
454bd7662dcSscole 	  IFSTAT_ERR(2, "getifmibdata() error getting interface data");
455bd7662dcSscole 	  return;
456bd7662dcSscole 	}
457bd7662dcSscole 
458bd7662dcSscole 	for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
459bd7662dcSscole 	  if (ifa->ifa_addr &&
460bd7662dcSscole 	      ifa->ifa_addr->sa_family == AF_LINK) {
461bd7662dcSscole 	    num++;
462bd7662dcSscole 
463bd7662dcSscole 	    /*
464bd7662dcSscole 	     * expecting rows to start with 1 not 0,
465bd7662dcSscole 	     * see freebsd "man ifmib"
466bd7662dcSscole 	     */
467bd7662dcSscole 	    if (num == row) {
468bd7662dcSscole 	      found = 1;
469bd7662dcSscole 	      data->ifdr_data = *(struct if_data *)ifa->ifa_data;
470bd7662dcSscole 	      strncpy(data->ifdr_name, ifa->ifa_name, IF_NAMESIZE);
471bd7662dcSscole 	      break;
472bd7662dcSscole 	    }
473bd7662dcSscole 	  }
474bd7662dcSscole 	}
475bd7662dcSscole 
476bd7662dcSscole 	freeifaddrs(ifaddrs);
477bd7662dcSscole 
478bd7662dcSscole 	if (!found) {
479bd7662dcSscole 	  IFSTAT_ERR(2, "getifmibdata() error finding row");
480bd7662dcSscole 	}
481bd7662dcSscole }
482bd7662dcSscole 
483bd7662dcSscole int
cmdifstat(const char * cmd,const char * args)484bd7662dcSscole cmdifstat(const char *cmd, const char *args)
485bd7662dcSscole {
486bd7662dcSscole 	int	retval = 0;
487bd7662dcSscole 
488bd7662dcSscole 	retval = ifcmd(cmd, args);
489bd7662dcSscole 	/* ifcmd() returns 1 on success */
490bd7662dcSscole 	if (retval == 1) {
491bd7662dcSscole 		showifstat();
492bd7662dcSscole 		refresh();
493bd7662dcSscole 		if (needclear) {
494bd7662dcSscole 			werase(wnd);
495bd7662dcSscole 			labelifstat();
496bd7662dcSscole 			needclear = 0;
497bd7662dcSscole 		}
498bd7662dcSscole 	}
499bd7662dcSscole 
500bd7662dcSscole 	return (retval);
501bd7662dcSscole }
502bd7662dcSscole 
503bd7662dcSscole void
ifstat_scale(char * args)504bd7662dcSscole ifstat_scale(char* args)
505bd7662dcSscole {
506bd7662dcSscole 	cmdifstat("scale", args ? args : "");
507bd7662dcSscole }
508bd7662dcSscole 
509bd7662dcSscole void
ifstat_pps(char * args)510bd7662dcSscole ifstat_pps(char* args)
511bd7662dcSscole {
512bd7662dcSscole 	cmdifstat("pps", "");
513bd7662dcSscole }
514bd7662dcSscole 
515bd7662dcSscole void
ifstat_match(char * args)516bd7662dcSscole ifstat_match(char* args)
517bd7662dcSscole {
518bd7662dcSscole 	cmdifstat("match", args ? args : "");
519bd7662dcSscole 
520bd7662dcSscole 	/*
521bd7662dcSscole 	 * force erase after match command because it is possible for
522bd7662dcSscole 	 * another command to be sent in the interval before the window
523bd7662dcSscole 	 * finishes redrawing completely.  That stale data remains in window
524bd7662dcSscole 	 * and never gets overwritten because there are fewer interfaces
525bd7662dcSscole 	 * being drawn on screen.  Only an issue for match command because
526bd7662dcSscole 	 * pps and scale don't change the number of interfaces being drawn.
527bd7662dcSscole 	 */
528bd7662dcSscole 	werase(wnd);
529bd7662dcSscole 	labelifstat();
530bd7662dcSscole }
531