1 /*-
2 * Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org>
3 * Copyright (c) 1983, 1988, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #if 0
32 #ifndef lint
33 static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95";
34 #endif /* not lint */
35 #endif
36
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
39
40 #include <sys/types.h>
41 #include <sys/protosw.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/sysctl.h>
45 #include <sys/time.h>
46
47 #define _IFI_OQDROPS
48 #include <net/if.h>
49 #include <net/if_var.h>
50 #include <net/if_dl.h>
51 #include <net/if_types.h>
52 #include <net/ethernet.h>
53 #include <netinet/in.h>
54 #include <netinet/in_var.h>
55 #include <netipx/ipx.h>
56 #include <netipx/ipx_if.h>
57 #include <arpa/inet.h>
58 #ifdef PF
59 #include <net/pfvar.h>
60 #include <net/if_pfsync.h>
61 #endif
62
63 #include <err.h>
64 #include <errno.h>
65 #include <ifaddrs.h>
66 #include <libutil.h>
67 #ifdef INET6
68 #include <netdb.h>
69 #endif
70 #include <signal.h>
71 #include <stdbool.h>
72 #include <stdint.h>
73 #include <stdio.h>
74 #include <stdlib.h>
75 #include <string.h>
76 #include <sysexits.h>
77 #include <unistd.h>
78
79 #include "netstat.h"
80
81 static void sidewaysintpr(int);
82
83 #ifdef INET6
84 static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
85 #endif
86
87 #ifdef PF
88 static const char* pfsyncacts[] = {
89 /* PFSYNC_ACT_CLR */ "clear all request",
90 /* PFSYNC_ACT_INS */ "state insert",
91 /* PFSYNC_ACT_INS_ACK */ "state inserted ack",
92 /* PFSYNC_ACT_UPD */ "state update",
93 /* PFSYNC_ACT_UPD_C */ "compressed state update",
94 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request",
95 /* PFSYNC_ACT_DEL */ "state delete",
96 /* PFSYNC_ACT_DEL_C */ "compressed state delete",
97 /* PFSYNC_ACT_INS_F */ "fragment insert",
98 /* PFSYNC_ACT_DEL_F */ "fragment delete",
99 /* PFSYNC_ACT_BUS */ "bulk update mark",
100 /* PFSYNC_ACT_TDB */ "TDB replay counter update",
101 /* PFSYNC_ACT_EOF */ "end of frame mark",
102 };
103
104 static void
pfsync_acts_stats(const char * fmt,uint64_t * a)105 pfsync_acts_stats(const char *fmt, uint64_t *a)
106 {
107 int i;
108
109 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++)
110 if (*a || sflag <= 1)
111 printf(fmt, *a, pfsyncacts[i], plural(*a));
112 }
113
114 /*
115 * Dump pfsync statistics structure.
116 */
117 void
pfsync_stats(u_long off,const char * name,int af1 __unused,int proto __unused)118 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
119 {
120 struct pfsyncstats pfsyncstat, zerostat;
121 size_t len = sizeof(struct pfsyncstats);
122
123 if (live) {
124 if (zflag)
125 memset(&zerostat, 0, len);
126 if (sysctlbyname("net.pfsync.stats", &pfsyncstat, &len,
127 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
128 if (errno != ENOENT)
129 warn("sysctl: net.pfsync.stats");
130 return;
131 }
132 } else
133 kread(off, &pfsyncstat, len);
134
135 printf("%s:\n", name);
136
137 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \
138 printf(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f))
139
140 p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n");
141 p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n");
142 pfsync_acts_stats("\t %ju %s%s received\n",
143 &pfsyncstat.pfsyncs_iacts[0]);
144 p(pfsyncs_badif, "\t\t%ju packet%s discarded for bad interface\n");
145 p(pfsyncs_badttl, "\t\t%ju packet%s discarded for bad ttl\n");
146 p(pfsyncs_hdrops, "\t\t%ju packet%s shorter than header\n");
147 p(pfsyncs_badver, "\t\t%ju packet%s discarded for bad version\n");
148 p(pfsyncs_badauth, "\t\t%ju packet%s discarded for bad HMAC\n");
149 p(pfsyncs_badact,"\t\t%ju packet%s discarded for bad action\n");
150 p(pfsyncs_badlen, "\t\t%ju packet%s discarded for short packet\n");
151 p(pfsyncs_badval, "\t\t%ju state%s discarded for bad values\n");
152 p(pfsyncs_stale, "\t\t%ju stale state%s\n");
153 p(pfsyncs_badstate, "\t\t%ju failed state lookup/insert%s\n");
154 p(pfsyncs_opackets, "\t%ju packet%s sent (IPv4)\n");
155 p(pfsyncs_opackets6, "\t%ju packet%s sent (IPv6)\n");
156 pfsync_acts_stats("\t %ju %s%s sent\n",
157 &pfsyncstat.pfsyncs_oacts[0]);
158 p(pfsyncs_onomem, "\t\t%ju failure%s due to mbuf memory error\n");
159 p(pfsyncs_oerrors, "\t\t%ju send error%s\n");
160 #undef p
161 }
162 #endif /* PF */
163
164 /*
165 * Display a formatted value, or a '-' in the same space.
166 */
167 static void
show_stat(const char * fmt,int width,u_long value,short showvalue)168 show_stat(const char *fmt, int width, u_long value, short showvalue)
169 {
170 const char *lsep, *rsep;
171 char newfmt[32];
172
173 lsep = "";
174 if (strncmp(fmt, "LS", 2) == 0) {
175 lsep = " ";
176 fmt += 2;
177 }
178 rsep = " ";
179 if (strncmp(fmt, "NRS", 3) == 0) {
180 rsep = "";
181 fmt += 3;
182 }
183 if (showvalue == 0) {
184 /* Print just dash. */
185 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep);
186 printf(newfmt, "-");
187 return;
188 }
189
190 if (hflag) {
191 char buf[5];
192
193 /* Format in human readable form. */
194 humanize_number(buf, sizeof(buf), (int64_t)value, "",
195 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL);
196 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep);
197 printf(newfmt, buf);
198 } else {
199 /* Construct the format string. */
200 sprintf(newfmt, "%s%%%d%s%s", lsep, width, fmt, rsep);
201 printf(newfmt, value);
202 }
203 }
204
205 /*
206 * Find next multiaddr for a given interface name.
207 */
208 static struct ifmaddrs *
next_ifma(struct ifmaddrs * ifma,const char * name,const sa_family_t family)209 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family)
210 {
211
212 for(; ifma != NULL; ifma = ifma->ifma_next) {
213 struct sockaddr_dl *sdl;
214
215 sdl = (struct sockaddr_dl *)ifma->ifma_name;
216 if (ifma->ifma_addr->sa_family == family &&
217 strcmp(sdl->sdl_data, name) == 0)
218 break;
219 }
220
221 return (ifma);
222 }
223
224 /*
225 * Print a description of the network interfaces.
226 */
227 void
intpr(int interval,void (* pfunc)(char *),int af)228 intpr(int interval, void (*pfunc)(char *), int af)
229 {
230 struct ifaddrs *ifap, *ifa;
231 struct ifmaddrs *ifmap, *ifma;
232
233 if (interval)
234 return sidewaysintpr(interval);
235
236 if (getifaddrs(&ifap) != 0)
237 err(EX_OSERR, "getifaddrs");
238 if (aflag && getifmaddrs(&ifmap) != 0)
239 err(EX_OSERR, "getifmaddrs");
240
241 if (!pfunc) {
242 if (Wflag)
243 printf("%-7.7s", "Name");
244 else
245 printf("%-5.5s", "Name");
246 printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s %5.5s",
247 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop");
248 if (bflag)
249 printf(" %10.10s","Ibytes");
250 printf(" %8.8s %5.5s", "Opkts", "Oerrs");
251 if (bflag)
252 printf(" %10.10s","Obytes");
253 printf(" %5s", "Coll");
254 if (dflag)
255 printf(" %s", "Drop");
256 putchar('\n');
257 }
258
259 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
260 bool network = false, link = false;
261
262 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0)
263 continue;
264
265 if (pfunc) {
266 char *name;
267
268 name = ifa->ifa_name;
269 (*pfunc)(name);
270
271 /*
272 * Skip all ifaddrs belonging to same interface.
273 */
274 while(ifa->ifa_next != NULL &&
275 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) {
276 ifa = ifa->ifa_next;
277 }
278 continue;
279 }
280
281 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af)
282 continue;
283
284 if (Wflag)
285 printf("%-7.7s", ifa->ifa_name);
286 else
287 printf("%-5.5s", ifa->ifa_name);
288
289 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu)
290 show_stat("lu", 6, IFA_MTU(ifa), IFA_MTU(ifa));
291 #undef IFA_MTU
292
293 switch (ifa->ifa_addr->sa_family) {
294 case AF_UNSPEC:
295 printf("%-13.13s ", "none");
296 printf("%-15.15s ", "none");
297 break;
298 case AF_INET:
299 {
300 struct sockaddr_in *sin, *mask;
301
302 sin = (struct sockaddr_in *)ifa->ifa_addr;
303 mask = (struct sockaddr_in *)ifa->ifa_netmask;
304 printf("%-13.13s ", netname(sin->sin_addr.s_addr,
305 mask->sin_addr.s_addr));
306 printf("%-17.17s ",
307 routename(sin->sin_addr.s_addr));
308
309 network = true;
310 break;
311 }
312 #ifdef INET6
313 case AF_INET6:
314 {
315 struct sockaddr_in6 *sin6, *mask;
316
317 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
318 mask = (struct sockaddr_in6 *)ifa->ifa_netmask;
319
320 printf("%-13.13s ", netname6(sin6, &mask->sin6_addr));
321 getnameinfo(ifa->ifa_addr, ifa->ifa_addr->sa_len,
322 addr_buf, sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
323 printf("%-17.17s ", addr_buf);
324
325 network = 1;
326 break;
327 }
328 #endif /* INET6 */
329 case AF_IPX:
330 {
331 struct sockaddr_ipx *sipx;
332 u_long net;
333 char netnum[10];
334
335 sipx = (struct sockaddr_ipx *)ifa->ifa_addr;
336 *(union ipx_net *) &net = sipx->sipx_addr.x_net;
337
338 sprintf(netnum, "%lx", (u_long)ntohl(net));
339 printf("ipx:%-8s ", netnum);
340 printf("%-17s ", ipx_phost((struct sockaddr *)sipx));
341
342 network = 1;
343 break;
344 }
345 case AF_APPLETALK:
346 printf("atalk:%-12.12s ",
347 atalk_print(ifa->ifa_addr, 0x10));
348 printf("%-11.11s ",
349 atalk_print(ifa->ifa_addr, 0x0b));
350 break;
351 case AF_LINK:
352 {
353 struct sockaddr_dl *sdl;
354 char *cp, linknum[10];
355 int n, m;
356
357 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
358 cp = (char *)LLADDR(sdl);
359 n = sdl->sdl_alen;
360 sprintf(linknum, "<Link#%d>", sdl->sdl_index);
361 m = printf("%-13.13s ", linknum);
362
363 while ((--n >= 0) && (m < 30))
364 m += printf("%02x%c", *cp++ & 0xff,
365 n > 0 ? ':' : ' ');
366 m = 32 - m;
367 while (m-- > 0)
368 putchar(' ');
369
370 link = 1;
371 break;
372 }
373 }
374
375 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s)
376 show_stat("lu", 8, IFA_STAT(ipackets), link|network);
377 show_stat("lu", 5, IFA_STAT(ierrors), link);
378 show_stat("lu", 5, IFA_STAT(iqdrops), link);
379 if (bflag)
380 show_stat("lu", 10, IFA_STAT(ibytes), link|network);
381 show_stat("lu", 8, IFA_STAT(opackets), link|network);
382 show_stat("lu", 5, IFA_STAT(oerrors), link);
383 if (bflag)
384 show_stat("lu", 10, IFA_STAT(obytes), link|network);
385 show_stat("NRSlu", 5, IFA_STAT(collisions), link);
386 if (dflag)
387 show_stat("LSlu", 5, IFA_STAT(oqdrops), link);
388 putchar('\n');
389
390 if (!aflag)
391 continue;
392
393 /*
394 * Print family's multicast addresses.
395 */
396 for (ifma = next_ifma(ifmap, ifa->ifa_name,
397 ifa->ifa_addr->sa_family);
398 ifma != NULL;
399 ifma = next_ifma(ifma, ifa->ifa_name,
400 ifa->ifa_addr->sa_family)) {
401 const char *fmt = NULL;
402
403 switch (ifma->ifma_addr->sa_family) {
404 case AF_INET:
405 {
406 struct sockaddr_in *sin;
407
408 sin = (struct sockaddr_in *)ifma->ifma_addr;
409 fmt = routename(sin->sin_addr.s_addr);
410 break;
411 }
412 #ifdef INET6
413 case AF_INET6:
414
415 /* in6_fillscopeid(&msa.in6); */
416 getnameinfo(ifma->ifma_addr,
417 ifma->ifma_addr->sa_len, addr_buf,
418 sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
419 printf("%*s %s\n",
420 Wflag ? 27 : 25, "", addr_buf);
421 break;
422 #endif /* INET6 */
423 case AF_LINK:
424 {
425 struct sockaddr_dl *sdl;
426
427 sdl = (struct sockaddr_dl *)ifma->ifma_addr;
428 switch (sdl->sdl_type) {
429 case IFT_ETHER:
430 case IFT_FDDI:
431 fmt = ether_ntoa(
432 (struct ether_addr *)LLADDR(sdl));
433 break;
434 }
435 break;
436 }
437 }
438
439 if (fmt) {
440 printf("%*s %-17.17s",
441 Wflag ? 27 : 25, "", fmt);
442 if (ifma->ifma_addr->sa_family == AF_LINK) {
443 printf(" %8lu", IFA_STAT(imcasts));
444 printf("%*s", bflag ? 17 : 6, "");
445 printf(" %8lu", IFA_STAT(omcasts));
446 }
447 putchar('\n');
448 }
449
450 ifma = ifma->ifma_next;
451 }
452 }
453
454 freeifaddrs(ifap);
455 if (aflag)
456 freeifmaddrs(ifmap);
457 }
458
459 struct iftot {
460 u_long ift_ip; /* input packets */
461 u_long ift_ie; /* input errors */
462 u_long ift_id; /* input drops */
463 u_long ift_op; /* output packets */
464 u_long ift_oe; /* output errors */
465 u_long ift_od; /* output drops */
466 u_long ift_co; /* collisions */
467 u_long ift_ib; /* input bytes */
468 u_long ift_ob; /* output bytes */
469 };
470
471 /*
472 * Obtain stats for interface(s).
473 */
474 static void
fill_iftot(struct iftot * st)475 fill_iftot(struct iftot *st)
476 {
477 struct ifaddrs *ifap, *ifa;
478 bool found = false;
479
480 if (getifaddrs(&ifap) != 0)
481 err(EX_OSERR, "getifaddrs");
482
483 bzero(st, sizeof(*st));
484
485 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
486 if (ifa->ifa_addr->sa_family != AF_LINK)
487 continue;
488 if (interface) {
489 if (strcmp(ifa->ifa_name, interface) == 0)
490 found = true;
491 else
492 continue;
493 }
494
495 st->ift_ip += IFA_STAT(ipackets);
496 st->ift_ie += IFA_STAT(ierrors);
497 st->ift_id += IFA_STAT(iqdrops);
498 st->ift_ib += IFA_STAT(ibytes);
499 st->ift_op += IFA_STAT(opackets);
500 st->ift_oe += IFA_STAT(oerrors);
501 st->ift_od += IFA_STAT(oqdrops);
502 st->ift_ob += IFA_STAT(obytes);
503 st->ift_co += IFA_STAT(collisions);
504 }
505
506 if (interface && found == false)
507 err(EX_DATAERR, "interface %s not found", interface);
508
509 freeifaddrs(ifap);
510 }
511
512 /*
513 * Set a flag to indicate that a signal from the periodic itimer has been
514 * caught.
515 */
516 static sig_atomic_t signalled;
517 static void
catchalarm(int signo __unused)518 catchalarm(int signo __unused)
519 {
520 signalled = true;
521 }
522
523 /*
524 * Print a running summary of interface statistics.
525 * Repeat display every interval seconds, showing statistics
526 * collected over that interval. Assumes that interval is non-zero.
527 * First line printed at top of screen is always cumulative.
528 */
529 static void
sidewaysintpr(int interval)530 sidewaysintpr(int interval)
531 {
532 struct iftot ift[2], *new, *old;
533 struct itimerval interval_it;
534 int oldmask, line;
535
536 new = &ift[0];
537 old = &ift[1];
538 fill_iftot(old);
539
540 (void)signal(SIGALRM, catchalarm);
541 signalled = false;
542 interval_it.it_interval.tv_sec = interval;
543 interval_it.it_interval.tv_usec = 0;
544 interval_it.it_value = interval_it.it_interval;
545 setitimer(ITIMER_REAL, &interval_it, NULL);
546
547 banner:
548 printf("%17s %14s %16s", "input",
549 interface != NULL ? interface : "(Total)", "output");
550 putchar('\n');
551 printf("%10s %5s %5s %10s %10s %5s %10s %5s",
552 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes",
553 "colls");
554 if (dflag)
555 printf(" %5.5s", "drops");
556 putchar('\n');
557 fflush(stdout);
558 line = 0;
559
560 loop:
561 if ((noutputs != 0) && (--noutputs == 0))
562 exit(0);
563 oldmask = sigblock(sigmask(SIGALRM));
564 while (!signalled)
565 sigpause(0);
566 signalled = false;
567 sigsetmask(oldmask);
568 line++;
569
570 fill_iftot(new);
571
572 show_stat("lu", 10, new->ift_ip - old->ift_ip, 1);
573 show_stat("lu", 5, new->ift_ie - old->ift_ie, 1);
574 show_stat("lu", 5, new->ift_id - old->ift_id, 1);
575 show_stat("lu", 10, new->ift_ib - old->ift_ib, 1);
576 show_stat("lu", 10, new->ift_op - old->ift_op, 1);
577 show_stat("lu", 5, new->ift_oe - old->ift_oe, 1);
578 show_stat("lu", 10, new->ift_ob - old->ift_ob, 1);
579 show_stat("NRSlu", 5, new->ift_co - old->ift_co, 1);
580 if (dflag)
581 show_stat("LSlu", 5, new->ift_od - old->ift_od, 1);
582 putchar('\n');
583 fflush(stdout);
584
585 if (new == &ift[0]) {
586 new = &ift[1];
587 old = &ift[0];
588 } else {
589 new = &ift[0];
590 old = &ift[1];
591 }
592
593 if (line == 21)
594 goto banner;
595 else
596 goto loop;
597
598 /* NOTREACHED */
599 }
600