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