1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org>
5 * Copyright (c) 1983, 1988, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/param.h>
34 #include <sys/protosw.h>
35 #include <sys/socket.h>
36 #include <sys/socketvar.h>
37 #include <sys/time.h>
38
39 #include <net/if.h>
40 #include <net/if_dl.h>
41 #include <net/if_types.h>
42 #include <net/ethernet.h>
43 #include <netinet/in.h>
44 #include <netinet/in_var.h>
45 #include <arpa/inet.h>
46 #ifdef PF
47 #include <net/pfvar.h>
48 #include <net/pflow.h>
49 #include <net/if_pfsync.h>
50 #endif
51
52 #include <errno.h>
53 #include <ifaddrs.h>
54 #include <libutil.h>
55 #ifdef INET6
56 #include <netdb.h>
57 #endif
58 #include <signal.h>
59 #include <stdbool.h>
60 #include <stdint.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include <sysexits.h>
65 #include <unistd.h>
66 #include <libxo/xo.h>
67
68 #include "netstat.h"
69
70 static void sidewaysintpr(void);
71
72 #ifdef PF
73 static const char* pfsyncacts[] = {
74 /* PFSYNC_ACT_CLR */ "clear all request",
75 /* PFSYNC_ACT_INS_1301 */ "13.1 state insert",
76 /* PFSYNC_ACT_INS_ACK */ "state inserted ack",
77 /* PFSYNC_ACT_UPD_1301 */ "13.1 state update",
78 /* PFSYNC_ACT_UPD_C */ "compressed state update",
79 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request",
80 /* PFSYNC_ACT_DEL */ "state delete",
81 /* PFSYNC_ACT_DEL_C */ "compressed state delete",
82 /* PFSYNC_ACT_INS_F */ "fragment insert",
83 /* PFSYNC_ACT_DEL_F */ "fragment delete",
84 /* PFSYNC_ACT_BUS */ "bulk update mark",
85 /* PFSYNC_ACT_TDB */ "TDB replay counter update",
86 /* PFSYNC_ACT_EOF */ "end of frame mark",
87 /* PFSYNC_ACT_INS_1400 */ "14.0 state insert",
88 /* PFSYNC_ACT_UPD_1400 */ "14.0 state update",
89 /* PFSYNC_ACT_INS_1500 */ "state insert",
90 /* PFSYNC_ACT_UPD_1500 */ "state update",
91 };
92
93 static const char* pfsyncacts_name[] = {
94 /* PFSYNC_ACT_CLR */ "clear-all-request",
95 /* PFSYNC_ACT_INS_1301 */ "state-insert-1301",
96 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack",
97 /* PFSYNC_ACT_UPD_1301 */ "state-update-1301",
98 /* PFSYNC_ACT_UPD_C */ "compressed-state-update",
99 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request",
100 /* PFSYNC_ACT_DEL */ "state-delete",
101 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete",
102 /* PFSYNC_ACT_INS_F */ "fragment-insert",
103 /* PFSYNC_ACT_DEL_F */ "fragment-delete",
104 /* PFSYNC_ACT_BUS */ "bulk-update-mark",
105 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update",
106 /* PFSYNC_ACT_EOF */ "end-of-frame-mark",
107 /* PFSYNC_ACT_INS_1400 */ "state-insert-1400",
108 /* PFSYNC_ACT_UPD_1400 */ "state-update-1400",
109 /* PFSYNC_ACT_INS_1500 */ "state-insert",
110 /* PFSYNC_ACT_UPD_1500 */ "state-update",
111 };
112
113 static void
pfsync_acts_stats(const char * list,const char * desc,uint64_t * a)114 pfsync_acts_stats(const char *list, const char *desc, uint64_t *a)
115 {
116 int i;
117
118 xo_open_list(list);
119 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) {
120 if (*a || sflag <= 1) {
121 xo_open_instance(list);
122 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n",
123 pfsyncacts_name[i], (uintmax_t)(*a),
124 pfsyncacts[i], plural(*a), desc);
125 xo_close_instance(list);
126 }
127 }
128 xo_close_list(list);
129 }
130
131 /*
132 * Dump pfsync statistics structure.
133 */
134 void
pfsync_stats(u_long off,const char * name,int af1 __unused,int proto __unused)135 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
136 {
137 struct pfsyncstats pfsyncstat;
138
139 if (fetch_stats("net.pfsync.stats", off, &pfsyncstat,
140 sizeof(pfsyncstat), kread) != 0)
141 return;
142
143 xo_emit("{T:/%s}:\n", name);
144 xo_open_container(name);
145
146 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \
147 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f))
148
149 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} "
150 "{N:/packet%s received (IPv4)}\n");
151 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} "
152 "{N:/packet%s received (IPv6)}\n");
153 pfsync_acts_stats("input-histogram", "received",
154 &pfsyncstat.pfsyncs_iacts[0]);
155 p(pfsyncs_badif, "\t\t{:dropped-bad-interface/%ju} "
156 "{N:/packet%s discarded for bad interface}\n");
157 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} "
158 "{N:/packet%s discarded for bad ttl}\n");
159 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} "
160 "{N:/packet%s shorter than header}\n");
161 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} "
162 "{N:/packet%s discarded for bad version}\n");
163 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} "
164 "{N:/packet%s discarded for bad HMAC}\n");
165 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} "
166 "{N:/packet%s discarded for bad action}\n");
167 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} "
168 "{N:/packet%s discarded for short packet}\n");
169 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} "
170 "{N:/state%s discarded for bad values}\n");
171 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} "
172 "{N:/stale state%s}\n");
173 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} "
174 "{N:/failed state lookup\\/insert%s}\n");
175 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} "
176 "{N:/packet%s sent (IPv4})\n");
177 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} "
178 "{N:/packet%s sent (IPv6})\n");
179 pfsync_acts_stats("output-histogram", "sent",
180 &pfsyncstat.pfsyncs_oacts[0]);
181 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} "
182 "{N:/failure%s due to mbuf memory error}\n");
183 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} "
184 "{N:/send error%s}\n");
185 #undef p
186 xo_close_container(name);
187 }
188
189 void
pflow_stats(u_long off,const char * name,int af1 __unused,int proto __unused)190 pflow_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
191 {
192 struct pflowstats pflowstat;
193
194 if (fetch_stats("net.pflow.stats", off, &pflowstat,
195 sizeof(pflowstat), kread) != 0)
196 return;
197
198 xo_emit("{T:/%s}:\n", name);
199 xo_open_container(name);
200
201 #define p(f, m) if (pflowstat.f || sflag <= 1) \
202 xo_emit(m, (uintmax_t)pflowstat.f, plural(pflowstat.f))
203
204 p(pflow_flows, "\t{:flows/%ju} {N:/flow%s sent}\n");
205 p(pflow_packets, "\t{:packets/%ju} {N:/packet%s sent}\n");
206 p(pflow_onomem, "\t{:nomem/%ju} "
207 "{N:/send failed due to mbuf memory error}\n");
208 p(pflow_oerrors, "\t{:send-error/%ju} {N:/send error}\n");
209 #undef p
210
211 xo_close_container(name);
212 }
213 #endif /* PF */
214
215 /*
216 * Display a formatted value, or a '-' in the same space.
217 */
218 static void
show_stat(const char * fmt,int width,const char * name,u_long value,short showvalue,int div1000)219 show_stat(const char *fmt, int width, const char *name,
220 u_long value, short showvalue, int div1000)
221 {
222 const char *lsep, *rsep;
223 char newfmt[64];
224
225 lsep = "";
226 if (strncmp(fmt, "LS", 2) == 0) {
227 lsep = " ";
228 fmt += 2;
229 }
230 rsep = " ";
231 if (strncmp(fmt, "NRS", 3) == 0) {
232 rsep = "";
233 fmt += 3;
234 }
235 if (showvalue == 0) {
236 /* Print just dash. */
237 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep);
238 return;
239 }
240
241 /*
242 * XXX: workaround {P:} modifier can't be empty and doesn't seem to
243 * take args... so we need to conditionally include it in the format.
244 */
245 #define maybe_pad(pad) do { \
246 if (strlen(pad)) { \
247 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \
248 xo_emit(newfmt); \
249 } \
250 } while (0)
251
252 if (hflag) {
253 char buf[5];
254
255 /* Format in human readable form. */
256 humanize_number(buf, sizeof(buf), (int64_t)value, "",
257 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL | \
258 ((div1000) ? HN_DIVISOR_1000 : 0));
259 maybe_pad(lsep);
260 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width);
261 xo_emit(newfmt, buf);
262 maybe_pad(rsep);
263 } else {
264 /* Construct the format string. */
265 maybe_pad(lsep);
266 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}",
267 name, width, fmt);
268 xo_emit(newfmt, value);
269 maybe_pad(rsep);
270 }
271 }
272
273 /*
274 * Find next multiaddr for a given interface name.
275 */
276 static struct ifmaddrs *
next_ifma(struct ifmaddrs * ifma,const char * name,const sa_family_t family)277 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family)
278 {
279
280 for(; ifma != NULL; ifma = ifma->ifma_next) {
281 struct sockaddr_dl *sdl;
282
283 sdl = (struct sockaddr_dl *)ifma->ifma_name;
284 if (ifma->ifma_addr->sa_family == family &&
285 sdl->sdl_nlen == strlen(name) &&
286 strncmp(sdl->sdl_data, name, sdl->sdl_nlen) == 0)
287 break;
288 }
289
290 return (ifma);
291 }
292
293 enum process_op { MEASURE, EMIT };
294
295 static void
process_ifa_addr(enum process_op op,struct ifaddrs * ifa,int * max_net_len,int * max_addr_len,bool * network,bool * link)296 process_ifa_addr(enum process_op op, struct ifaddrs *ifa, int *max_net_len,
297 int *max_addr_len, bool *network, bool *link)
298 {
299 int net_len, addr_len;
300 const char *nn, *rn;
301
302 if (op == EMIT) {
303 net_len = *max_net_len;
304 addr_len = *max_addr_len;
305 }
306
307 switch (ifa->ifa_addr->sa_family) {
308 case AF_UNSPEC:
309 if (op == MEASURE) {
310 net_len = strlen("none");
311 addr_len = strlen("none");
312 } else {
313 xo_emit("{:network/%-*.*s} ", net_len, net_len,
314 "none");
315 xo_emit("{:address/%-*.*s} ", addr_len, addr_len,
316 "none");
317 }
318 break;
319 case AF_INET:
320 #ifdef INET6
321 case AF_INET6:
322 #endif /* INET6 */
323 nn = netname(ifa->ifa_addr, ifa->ifa_netmask);
324 rn = routename(ifa->ifa_addr, numeric_addr);
325 if (op == MEASURE) {
326 net_len = strlen(nn);
327 addr_len = strlen(rn);
328 } else {
329 xo_emit("{t:network/%-*s} ", net_len, nn);
330 xo_emit("{t:address/%-*s} ", addr_len, rn);
331 }
332
333 if (network != NULL)
334 *network = true;
335 break;
336 case AF_LINK:
337 {
338 struct sockaddr_dl *sdl;
339 char linknum[sizeof("<Link#32767>")];
340
341 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
342 snprintf(linknum, sizeof(linknum), "<Link#%d>", sdl->sdl_index);
343 if (op == MEASURE) {
344 net_len = strlen(linknum);
345 if (sdl->sdl_nlen == 0 &&
346 sdl->sdl_alen == 0 &&
347 sdl->sdl_slen == 0)
348 addr_len = 1;
349 else
350 addr_len = strlen(routename(ifa->ifa_addr, 1));
351 } else {
352 xo_emit("{t:network/%-*.*s} ", net_len, net_len,
353 linknum);
354 if (sdl->sdl_nlen == 0 &&
355 sdl->sdl_alen == 0 &&
356 sdl->sdl_slen == 0)
357 xo_emit("{P:/%*s} ", addr_len, "");
358 else
359 xo_emit("{t:address/%-*.*s} ", addr_len,
360 addr_len, routename(ifa->ifa_addr, 1));
361 }
362 if (link != NULL)
363 *link = true;
364 break;
365 }
366 }
367
368 if (op == MEASURE) {
369 if (net_len > *max_net_len)
370 *max_net_len = net_len;
371 if (addr_len > *max_addr_len)
372 *max_addr_len = addr_len;
373 }
374 }
375
376 static int
max_num_len(int max_len,u_long num)377 max_num_len(int max_len, u_long num)
378 {
379 int len = 2; /* include space */
380
381 for (; num > 10; len++)
382 num /= 10;
383 return (MAX(max_len, len));
384 }
385
386 /*
387 * Print a description of the network interfaces.
388 */
389 void
intpr(void (* pfunc)(char *),int af)390 intpr(void (*pfunc)(char *), int af)
391 {
392 struct ifaddrs *ifap, *ifa;
393 struct ifmaddrs *ifmap, *ifma;
394 u_int ifn_len_max = 5, ifn_len;
395 u_int net_len = strlen("Network "), addr_len = strlen("Address ");
396 u_int npkt_len = 8, nbyte_len = 10, nerr_len = 5;
397
398 if (interval)
399 return sidewaysintpr();
400
401 if (getifaddrs(&ifap) != 0)
402 xo_err(EX_OSERR, "getifaddrs");
403 if (aflag && getifmaddrs(&ifmap) != 0)
404 xo_err(EX_OSERR, "getifmaddrs");
405
406 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
407 if (interface != NULL &&
408 strcmp(ifa->ifa_name, interface) != 0)
409 continue;
410 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af)
411 continue;
412 ifn_len = strlen(ifa->ifa_name);
413 if ((ifa->ifa_flags & IFF_UP) == 0)
414 ++ifn_len;
415 ifn_len_max = MAX(ifn_len_max, ifn_len);
416 process_ifa_addr(MEASURE, ifa, &net_len, &addr_len,
417 NULL, NULL);
418
419 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s)
420 if (!hflag) {
421 npkt_len = max_num_len(npkt_len, IFA_STAT(ipackets));
422 npkt_len = max_num_len(npkt_len, IFA_STAT(opackets));
423 nerr_len = max_num_len(nerr_len, IFA_STAT(ierrors));
424 nerr_len = max_num_len(nerr_len, IFA_STAT(iqdrops));
425 nerr_len = max_num_len(nerr_len, IFA_STAT(collisions));
426 if (dflag)
427 nerr_len = max_num_len(nerr_len,
428 IFA_STAT(oqdrops));
429 if (bflag) {
430 nbyte_len = max_num_len(nbyte_len,
431 IFA_STAT(ibytes));
432 nbyte_len = max_num_len(nbyte_len,
433 IFA_STAT(obytes));
434 }
435 }
436 }
437
438 xo_open_list("interface");
439 if (!pfunc) {
440 xo_emit("{T:/%-*.*s}", ifn_len_max, ifn_len_max, "Name");
441 xo_emit(" {T:/%5.5s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} "
442 "{T:/%*.*s} {T:/%*.*s}",
443 "Mtu", net_len, net_len, "Network", addr_len, addr_len,
444 "Address", npkt_len, npkt_len, "Ipkts",
445 nerr_len, nerr_len, "Ierrs", nerr_len, nerr_len, "Idrop");
446 if (bflag)
447 xo_emit(" {T:/%*.*s}", nbyte_len, nbyte_len, "Ibytes");
448 xo_emit(" {T:/%*.*s} {T:/%*.*s}", npkt_len, npkt_len, "Opkts",
449 nerr_len, nerr_len, "Oerrs");
450 if (bflag)
451 xo_emit(" {T:/%*.*s}", nbyte_len, nbyte_len, "Obytes");
452 xo_emit(" {T:/%*s}", nerr_len, "Coll");
453 if (dflag)
454 xo_emit(" {T:/%*.*s}", nerr_len, nerr_len, "Drop");
455 xo_emit("\n");
456 }
457
458 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
459 bool network = false, link = false;
460 char *name, *xname, buf[IFNAMSIZ+1];
461
462 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0)
463 continue;
464
465 name = ifa->ifa_name;
466
467 if (pfunc) {
468
469 (*pfunc)(name);
470
471 /*
472 * Skip all ifaddrs belonging to same interface.
473 */
474 while(ifa->ifa_next != NULL &&
475 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) {
476 ifa = ifa->ifa_next;
477 }
478 continue;
479 }
480
481 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af)
482 continue;
483
484 xo_open_instance("interface");
485
486 if ((ifa->ifa_flags & IFF_UP) == 0) {
487 xname = stpcpy(buf, name);
488 *xname++ = '*';
489 *xname = '\0';
490 xname = buf;
491 } else
492 xname = name;
493
494 xo_emit("{d:/%-*.*s}{etk:name}{eq:flags/0x%x}",
495 ifn_len_max, ifn_len_max, xname, name, ifa->ifa_flags);
496
497 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu)
498 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0);
499 #undef IFA_MTU
500
501 process_ifa_addr(EMIT, ifa, &net_len, &addr_len,
502 &network, &link);
503
504 show_stat("lu", npkt_len, "received-packets",
505 IFA_STAT(ipackets), link|network, 1);
506 show_stat("lu", nerr_len, "received-errors", IFA_STAT(ierrors),
507 link, 1);
508 show_stat("lu", nerr_len, "dropped-packets", IFA_STAT(iqdrops),
509 link, 1);
510 if (bflag)
511 show_stat("lu", nbyte_len, "received-bytes",
512 IFA_STAT(ibytes), link|network, 0);
513 show_stat("lu", npkt_len, "sent-packets", IFA_STAT(opackets),
514 link|network, 1);
515 show_stat("lu", nerr_len, "send-errors", IFA_STAT(oerrors),
516 link, 1);
517 if (bflag)
518 show_stat("lu", nbyte_len, "sent-bytes",
519 IFA_STAT(obytes), link|network, 0);
520 show_stat("NRSlu", nerr_len, "collisions", IFA_STAT(collisions),
521 link, 1);
522 if (dflag)
523 show_stat("LSlu", nerr_len, "dropped-packets",
524 IFA_STAT(oqdrops), link, 1);
525 xo_emit("\n");
526
527 if (!aflag) {
528 xo_close_instance("interface");
529 continue;
530 }
531
532 /*
533 * Print family's multicast addresses.
534 */
535 xo_open_list("multicast-address");
536 for (ifma = next_ifma(ifmap, ifa->ifa_name,
537 ifa->ifa_addr->sa_family);
538 ifma != NULL;
539 ifma = next_ifma(ifma, ifa->ifa_name,
540 ifa->ifa_addr->sa_family)) {
541 const char *fmt = NULL;
542
543 xo_open_instance("multicast-address");
544 switch (ifma->ifma_addr->sa_family) {
545 case AF_LINK:
546 {
547 struct sockaddr_dl *sdl;
548
549 sdl = (struct sockaddr_dl *)ifma->ifma_addr;
550 if (sdl->sdl_type != IFT_ETHER &&
551 sdl->sdl_type != IFT_FDDI)
552 break;
553 }
554 /* FALLTHROUGH */
555 case AF_INET:
556 #ifdef INET6
557 case AF_INET6:
558 #endif /* INET6 */
559 fmt = routename(ifma->ifma_addr, numeric_addr);
560 break;
561 }
562 if (fmt) {
563 if (Wflag)
564 xo_emit("{P:/%27s }"
565 "{t:address/%-17s/}", "", fmt);
566 else
567 xo_emit("{P:/%25s }"
568 "{t:address/%-17.17s/}", "", fmt);
569 if (ifma->ifma_addr->sa_family == AF_LINK) {
570 xo_emit(" {:received-packets/%8lu}",
571 IFA_STAT(imcasts));
572 xo_emit("{P:/%*s}", bflag? 17 : 6, "");
573 xo_emit(" {:sent-packets/%8lu}",
574 IFA_STAT(omcasts));
575 }
576 xo_emit("\n");
577 }
578 xo_close_instance("multicast-address");
579 ifma = ifma->ifma_next;
580 }
581 xo_close_list("multicast-address");
582 xo_close_instance("interface");
583 }
584 xo_close_list("interface");
585
586 freeifaddrs(ifap);
587 if (aflag)
588 freeifmaddrs(ifmap);
589 }
590
591 struct iftot {
592 u_long ift_ip; /* input packets */
593 u_long ift_ie; /* input errors */
594 u_long ift_id; /* input drops */
595 u_long ift_op; /* output packets */
596 u_long ift_oe; /* output errors */
597 u_long ift_od; /* output drops */
598 u_long ift_co; /* collisions */
599 u_long ift_ib; /* input bytes */
600 u_long ift_ob; /* output bytes */
601 };
602
603 /*
604 * Obtain stats for interface(s).
605 */
606 static void
fill_iftot(struct iftot * st)607 fill_iftot(struct iftot *st)
608 {
609 struct ifaddrs *ifap, *ifa;
610 bool found = false;
611
612 if (getifaddrs(&ifap) != 0)
613 xo_err(EX_OSERR, "getifaddrs");
614
615 bzero(st, sizeof(*st));
616
617 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
618 if (ifa->ifa_addr->sa_family != AF_LINK)
619 continue;
620 if (interface) {
621 if (strcmp(ifa->ifa_name, interface) == 0)
622 found = true;
623 else
624 continue;
625 }
626
627 st->ift_ip += IFA_STAT(ipackets);
628 st->ift_ie += IFA_STAT(ierrors);
629 st->ift_id += IFA_STAT(iqdrops);
630 st->ift_ib += IFA_STAT(ibytes);
631 st->ift_op += IFA_STAT(opackets);
632 st->ift_oe += IFA_STAT(oerrors);
633 st->ift_od += IFA_STAT(oqdrops);
634 st->ift_ob += IFA_STAT(obytes);
635 st->ift_co += IFA_STAT(collisions);
636 }
637
638 if (interface && found == false)
639 xo_err(EX_DATAERR, "interface %s not found", interface);
640
641 freeifaddrs(ifap);
642 }
643
644 /*
645 * Set a flag to indicate that a signal from the periodic itimer has been
646 * caught.
647 */
648 static sig_atomic_t signalled;
649 static void
catchalarm(int signo __unused)650 catchalarm(int signo __unused)
651 {
652 signalled = true;
653 }
654
655 /*
656 * Print a running summary of interface statistics.
657 * Repeat display every interval seconds, showing statistics
658 * collected over that interval. Assumes that interval is non-zero.
659 * First line printed at top of screen is always cumulative.
660 */
661 static void
sidewaysintpr(void)662 sidewaysintpr(void)
663 {
664 struct iftot ift[2], *new, *old;
665 struct itimerval interval_it;
666 int oldmask, line;
667
668 new = &ift[0];
669 old = &ift[1];
670 fill_iftot(old);
671
672 (void)signal(SIGALRM, catchalarm);
673 signalled = false;
674 interval_it.it_interval.tv_sec = interval;
675 interval_it.it_interval.tv_usec = 0;
676 interval_it.it_value = interval_it.it_interval;
677 setitimer(ITIMER_REAL, &interval_it, NULL);
678 xo_open_list("interface-statistics");
679
680 banner:
681 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input",
682 interface != NULL ? interface : "(Total)", "output");
683 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} "
684 "{T:/%10s} {T:/%5s}",
685 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes",
686 "colls");
687 if (dflag)
688 xo_emit(" {T:/%5.5s}", "drops");
689 xo_emit("\n");
690 xo_flush();
691 line = 0;
692
693 loop:
694 if ((noutputs != 0) && (--noutputs == 0)) {
695 xo_close_list("interface-statistics");
696 return;
697 }
698 oldmask = sigblock(sigmask(SIGALRM));
699 while (!signalled)
700 sigpause(0);
701 signalled = false;
702 sigsetmask(oldmask);
703 line++;
704
705 fill_iftot(new);
706
707 xo_open_instance("stats");
708 show_stat("lu", 10, "received-packets",
709 new->ift_ip - old->ift_ip, 1, 1);
710 show_stat("lu", 5, "received-errors",
711 new->ift_ie - old->ift_ie, 1, 1);
712 show_stat("lu", 5, "dropped-packets",
713 new->ift_id - old->ift_id, 1, 1);
714 show_stat("lu", 10, "received-bytes",
715 new->ift_ib - old->ift_ib, 1, 0);
716 show_stat("lu", 10, "sent-packets",
717 new->ift_op - old->ift_op, 1, 1);
718 show_stat("lu", 5, "send-errors",
719 new->ift_oe - old->ift_oe, 1, 1);
720 show_stat("lu", 10, "sent-bytes",
721 new->ift_ob - old->ift_ob, 1, 0);
722 show_stat("NRSlu", 5, "collisions",
723 new->ift_co - old->ift_co, 1, 1);
724 if (dflag)
725 show_stat("LSlu", 5, "dropped-packets",
726 new->ift_od - old->ift_od, 1, 1);
727 xo_close_instance("stats");
728 xo_emit("\n");
729 xo_flush();
730
731 if (new == &ift[0]) {
732 new = &ift[1];
733 old = &ift[0];
734 } else {
735 new = &ift[0];
736 old = &ift[1];
737 }
738
739 if (line == 21)
740 goto banner;
741 else
742 goto loop;
743
744 /* NOTREACHED */
745 }
746