Contents of /trunk/mkinitrd-magellan/busybox/networking/interface.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 29429 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * stolen from net-tools-1.59 and stripped down for busybox by |
4 | * Erik Andersen <andersen@codepoet.org> |
5 | * |
6 | * Heavily modified by Manuel Novoa III Mar 12, 2001 |
7 | * |
8 | * Added print_bytes_scaled function to reduce code size. |
9 | * Added some (potentially) missing defines. |
10 | * Improved display support for -a and for a named interface. |
11 | * |
12 | * ----------------------------------------------------------- |
13 | * |
14 | * ifconfig This file contains an implementation of the command |
15 | * that either displays or sets the characteristics of |
16 | * one or more of the system's networking interfaces. |
17 | * |
18 | * |
19 | * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org> |
20 | * and others. Copyright 1993 MicroWalt Corporation |
21 | * |
22 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
23 | * |
24 | * Patched to support 'add' and 'del' keywords for INET(4) addresses |
25 | * by Mrs. Brisby <mrs.brisby@nimh.org> |
26 | * |
27 | * {1.34} - 19980630 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
28 | * - gettext instead of catgets for i18n |
29 | * 10/1998 - Andi Kleen. Use interface list primitives. |
30 | * 20001008 - Bernd Eckenfels, Patch from RH for setting mtu |
31 | * (default AF was wrong) |
32 | */ |
33 | #include <net/if.h> |
34 | #include <net/if_arp.h> |
35 | #if (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined(_NEWLIB_VERSION) |
36 | # include <net/ethernet.h> |
37 | #else |
38 | # include <linux/if_ether.h> |
39 | #endif |
40 | #include "libbb.h" |
41 | #include "inet_common.h" |
42 | |
43 | #if ENABLE_FEATURE_HWIB |
44 | /* #include <linux/if_infiniband.h> */ |
45 | # undef INFINIBAND_ALEN |
46 | # define INFINIBAND_ALEN 20 |
47 | #endif |
48 | |
49 | #if ENABLE_FEATURE_IPV6 |
50 | # define HAVE_AFINET6 1 |
51 | #else |
52 | # undef HAVE_AFINET6 |
53 | #endif |
54 | |
55 | #define _PATH_PROCNET_DEV "/proc/net/dev" |
56 | #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" |
57 | |
58 | #ifdef HAVE_AFINET6 |
59 | # ifndef _LINUX_IN6_H |
60 | /* |
61 | * This is from linux/include/net/ipv6.h |
62 | */ |
63 | struct in6_ifreq { |
64 | struct in6_addr ifr6_addr; |
65 | uint32_t ifr6_prefixlen; |
66 | unsigned int ifr6_ifindex; |
67 | }; |
68 | # endif |
69 | #endif /* HAVE_AFINET6 */ |
70 | |
71 | /* Defines for glibc2.0 users. */ |
72 | #ifndef SIOCSIFTXQLEN |
73 | # define SIOCSIFTXQLEN 0x8943 |
74 | # define SIOCGIFTXQLEN 0x8942 |
75 | #endif |
76 | |
77 | /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */ |
78 | #ifndef ifr_qlen |
79 | # define ifr_qlen ifr_ifru.ifru_mtu |
80 | #endif |
81 | |
82 | #ifndef HAVE_TXQUEUELEN |
83 | # define HAVE_TXQUEUELEN 1 |
84 | #endif |
85 | |
86 | #ifndef IFF_DYNAMIC |
87 | # define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ |
88 | #endif |
89 | |
90 | /* Display an Internet socket address. */ |
91 | static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric) |
92 | { |
93 | static char *buff; /* defaults to NULL */ |
94 | |
95 | free(buff); |
96 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
97 | return "[NONE SET]"; |
98 | buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00); |
99 | return buff; |
100 | } |
101 | |
102 | #ifdef UNUSED_AND_BUGGY |
103 | static int INET_getsock(char *bufp, struct sockaddr *sap) |
104 | { |
105 | char *sp = bufp, *bp; |
106 | unsigned int i; |
107 | unsigned val; |
108 | struct sockaddr_in *sock_in; |
109 | |
110 | sock_in = (struct sockaddr_in *) sap; |
111 | sock_in->sin_family = AF_INET; |
112 | sock_in->sin_port = 0; |
113 | |
114 | val = 0; |
115 | bp = (char *) &val; |
116 | for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) { |
117 | *sp = toupper(*sp); |
118 | |
119 | if ((unsigned)(*sp - 'A') <= 5) |
120 | bp[i] |= (int) (*sp - ('A' - 10)); |
121 | else if (isdigit(*sp)) |
122 | bp[i] |= (int) (*sp - '0'); |
123 | else |
124 | return -1; |
125 | |
126 | bp[i] <<= 4; |
127 | sp++; |
128 | *sp = toupper(*sp); |
129 | |
130 | if ((unsigned)(*sp - 'A') <= 5) |
131 | bp[i] |= (int) (*sp - ('A' - 10)); |
132 | else if (isdigit(*sp)) |
133 | bp[i] |= (int) (*sp - '0'); |
134 | else |
135 | return -1; |
136 | |
137 | sp++; |
138 | } |
139 | sock_in->sin_addr.s_addr = htonl(val); |
140 | |
141 | return (sp - bufp); |
142 | } |
143 | #endif |
144 | |
145 | static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap) |
146 | { |
147 | return INET_resolve(bufp, (struct sockaddr_in *) sap, 0); |
148 | /* |
149 | switch (type) { |
150 | case 1: |
151 | return (INET_getsock(bufp, sap)); |
152 | case 256: |
153 | return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1)); |
154 | default: |
155 | return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0)); |
156 | } |
157 | */ |
158 | } |
159 | |
160 | static const struct aftype inet_aftype = { |
161 | .name = "inet", |
162 | .title = "DARPA Internet", |
163 | .af = AF_INET, |
164 | .alen = 4, |
165 | .sprint = INET_sprint, |
166 | .input = INET_input, |
167 | }; |
168 | |
169 | #ifdef HAVE_AFINET6 |
170 | |
171 | /* Display an Internet socket address. */ |
172 | /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */ |
173 | static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric) |
174 | { |
175 | static char *buff; |
176 | |
177 | free(buff); |
178 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
179 | return "[NONE SET]"; |
180 | buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric); |
181 | return buff; |
182 | } |
183 | |
184 | #ifdef UNUSED |
185 | static int INET6_getsock(char *bufp, struct sockaddr *sap) |
186 | { |
187 | struct sockaddr_in6 *sin6; |
188 | |
189 | sin6 = (struct sockaddr_in6 *) sap; |
190 | sin6->sin6_family = AF_INET6; |
191 | sin6->sin6_port = 0; |
192 | |
193 | if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0) |
194 | return -1; |
195 | |
196 | return 16; /* ?;) */ |
197 | } |
198 | #endif |
199 | |
200 | static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap) |
201 | { |
202 | return INET6_resolve(bufp, (struct sockaddr_in6 *) sap); |
203 | /* |
204 | switch (type) { |
205 | case 1: |
206 | return (INET6_getsock(bufp, sap)); |
207 | default: |
208 | return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap)); |
209 | } |
210 | */ |
211 | } |
212 | |
213 | static const struct aftype inet6_aftype = { |
214 | .name = "inet6", |
215 | .title = "IPv6", |
216 | .af = AF_INET6, |
217 | .alen = sizeof(struct in6_addr), |
218 | .sprint = INET6_sprint, |
219 | .input = INET6_input, |
220 | }; |
221 | |
222 | #endif /* HAVE_AFINET6 */ |
223 | |
224 | /* Display an UNSPEC address. */ |
225 | static char* FAST_FUNC UNSPEC_print(unsigned char *ptr) |
226 | { |
227 | static char *buff; |
228 | |
229 | char *pos; |
230 | unsigned int i; |
231 | |
232 | if (!buff) |
233 | buff = xmalloc(sizeof(struct sockaddr) * 3 + 1); |
234 | pos = buff; |
235 | for (i = 0; i < sizeof(struct sockaddr); i++) { |
236 | /* careful -- not every libc's sprintf returns # bytes written */ |
237 | sprintf(pos, "%02X-", (*ptr++ & 0377)); |
238 | pos += 3; |
239 | } |
240 | /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */ |
241 | *--pos = '\0'; |
242 | return buff; |
243 | } |
244 | |
245 | /* Display an UNSPEC socket address. */ |
246 | static const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM) |
247 | { |
248 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
249 | return "[NONE SET]"; |
250 | return UNSPEC_print((unsigned char *)sap->sa_data); |
251 | } |
252 | |
253 | static const struct aftype unspec_aftype = { |
254 | .name = "unspec", |
255 | .title = "UNSPEC", |
256 | .af = AF_UNSPEC, |
257 | .alen = 0, |
258 | .print = UNSPEC_print, |
259 | .sprint = UNSPEC_sprint, |
260 | }; |
261 | |
262 | static const struct aftype *const aftypes[] = { |
263 | &inet_aftype, |
264 | #ifdef HAVE_AFINET6 |
265 | &inet6_aftype, |
266 | #endif |
267 | &unspec_aftype, |
268 | NULL |
269 | }; |
270 | |
271 | /* Check our protocol family table for this family. */ |
272 | const struct aftype* FAST_FUNC get_aftype(const char *name) |
273 | { |
274 | const struct aftype *const *afp; |
275 | |
276 | afp = aftypes; |
277 | while (*afp != NULL) { |
278 | if (!strcmp((*afp)->name, name)) |
279 | return (*afp); |
280 | afp++; |
281 | } |
282 | return NULL; |
283 | } |
284 | |
285 | /* Check our protocol family table for this family. */ |
286 | static const struct aftype *get_afntype(int af) |
287 | { |
288 | const struct aftype *const *afp; |
289 | |
290 | afp = aftypes; |
291 | while (*afp != NULL) { |
292 | if ((*afp)->af == af) |
293 | return *afp; |
294 | afp++; |
295 | } |
296 | return NULL; |
297 | } |
298 | |
299 | struct user_net_device_stats { |
300 | unsigned long long rx_packets; /* total packets received */ |
301 | unsigned long long tx_packets; /* total packets transmitted */ |
302 | unsigned long long rx_bytes; /* total bytes received */ |
303 | unsigned long long tx_bytes; /* total bytes transmitted */ |
304 | unsigned long rx_errors; /* bad packets received */ |
305 | unsigned long tx_errors; /* packet transmit problems */ |
306 | unsigned long rx_dropped; /* no space in linux buffers */ |
307 | unsigned long tx_dropped; /* no space available in linux */ |
308 | unsigned long rx_multicast; /* multicast packets received */ |
309 | unsigned long rx_compressed; |
310 | unsigned long tx_compressed; |
311 | unsigned long collisions; |
312 | |
313 | /* detailed rx_errors: */ |
314 | unsigned long rx_length_errors; |
315 | unsigned long rx_over_errors; /* receiver ring buff overflow */ |
316 | unsigned long rx_crc_errors; /* recved pkt with crc error */ |
317 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ |
318 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ |
319 | unsigned long rx_missed_errors; /* receiver missed packet */ |
320 | /* detailed tx_errors */ |
321 | unsigned long tx_aborted_errors; |
322 | unsigned long tx_carrier_errors; |
323 | unsigned long tx_fifo_errors; |
324 | unsigned long tx_heartbeat_errors; |
325 | unsigned long tx_window_errors; |
326 | }; |
327 | |
328 | struct interface { |
329 | struct interface *next, *prev; |
330 | char name[IFNAMSIZ]; /* interface name */ |
331 | short type; /* if type */ |
332 | short flags; /* various flags */ |
333 | int metric; /* routing metric */ |
334 | int mtu; /* MTU value */ |
335 | int tx_queue_len; /* transmit queue length */ |
336 | struct ifmap map; /* hardware setup */ |
337 | struct sockaddr addr; /* IP address */ |
338 | struct sockaddr dstaddr; /* P-P IP address */ |
339 | struct sockaddr broadaddr; /* IP broadcast address */ |
340 | struct sockaddr netmask; /* IP network mask */ |
341 | int has_ip; |
342 | char hwaddr[32]; /* HW address */ |
343 | int statistics_valid; |
344 | struct user_net_device_stats stats; /* statistics */ |
345 | int keepalive; /* keepalive value for SLIP */ |
346 | int outfill; /* outfill value for SLIP */ |
347 | }; |
348 | |
349 | |
350 | smallint interface_opt_a; /* show all interfaces */ |
351 | |
352 | static struct interface *int_list, *int_last; |
353 | |
354 | |
355 | #if 0 |
356 | /* like strcmp(), but knows about numbers */ |
357 | except that the freshly added calls to xatoul() brf on ethernet aliases with |
358 | uClibc with e.g.: ife->name='lo' name='eth0:1' |
359 | static int nstrcmp(const char *a, const char *b) |
360 | { |
361 | const char *a_ptr = a; |
362 | const char *b_ptr = b; |
363 | |
364 | while (*a == *b) { |
365 | if (*a == '\0') { |
366 | return 0; |
367 | } |
368 | if (!isdigit(*a) && isdigit(*(a+1))) { |
369 | a_ptr = a+1; |
370 | b_ptr = b+1; |
371 | } |
372 | a++; |
373 | b++; |
374 | } |
375 | |
376 | if (isdigit(*a) && isdigit(*b)) { |
377 | return xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1; |
378 | } |
379 | return *a - *b; |
380 | } |
381 | #endif |
382 | |
383 | static struct interface *add_interface(char *name) |
384 | { |
385 | struct interface *ife, **nextp, *new; |
386 | |
387 | for (ife = int_last; ife; ife = ife->prev) { |
388 | int n = /*n*/strcmp(ife->name, name); |
389 | |
390 | if (n == 0) |
391 | return ife; |
392 | if (n < 0) |
393 | break; |
394 | } |
395 | |
396 | new = xzalloc(sizeof(*new)); |
397 | strncpy_IFNAMSIZ(new->name, name); |
398 | nextp = ife ? &ife->next : &int_list; |
399 | new->prev = ife; |
400 | new->next = *nextp; |
401 | if (new->next) |
402 | new->next->prev = new; |
403 | else |
404 | int_last = new; |
405 | *nextp = new; |
406 | return new; |
407 | } |
408 | |
409 | static char *get_name(char *name, char *p) |
410 | { |
411 | /* Extract <name> from nul-terminated p where p matches |
412 | * <name>: after leading whitespace. |
413 | * If match is not made, set name empty and return unchanged p |
414 | */ |
415 | char *nameend; |
416 | char *namestart = skip_whitespace(p); |
417 | |
418 | nameend = namestart; |
419 | while (*nameend && *nameend != ':' && !isspace(*nameend)) |
420 | nameend++; |
421 | if (*nameend == ':') { |
422 | if ((nameend - namestart) < IFNAMSIZ) { |
423 | memcpy(name, namestart, nameend - namestart); |
424 | name[nameend - namestart] = '\0'; |
425 | p = nameend; |
426 | } else { |
427 | /* Interface name too large */ |
428 | name[0] = '\0'; |
429 | } |
430 | } else { |
431 | /* trailing ':' not found - return empty */ |
432 | name[0] = '\0'; |
433 | } |
434 | return p + 1; |
435 | } |
436 | |
437 | /* If scanf supports size qualifiers for %n conversions, then we can |
438 | * use a modified fmt that simply stores the position in the fields |
439 | * having no associated fields in the proc string. Of course, we need |
440 | * to zero them again when we're done. But that is smaller than the |
441 | * old approach of multiple scanf occurrences with large numbers of |
442 | * args. */ |
443 | |
444 | /* static const char *const ss_fmt[] = { */ |
445 | /* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */ |
446 | /* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */ |
447 | /* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */ |
448 | /* }; */ |
449 | |
450 | /* Lie about the size of the int pointed to for %n. */ |
451 | #if INT_MAX == LONG_MAX |
452 | static const char *const ss_fmt[] = { |
453 | "%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u", |
454 | "%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u", |
455 | "%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u" |
456 | }; |
457 | #else |
458 | static const char *const ss_fmt[] = { |
459 | "%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu", |
460 | "%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu", |
461 | "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" |
462 | }; |
463 | |
464 | #endif |
465 | |
466 | static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn) |
467 | { |
468 | memset(&ife->stats, 0, sizeof(struct user_net_device_stats)); |
469 | |
470 | sscanf(bp, ss_fmt[procnetdev_vsn], |
471 | &ife->stats.rx_bytes, /* missing for 0 */ |
472 | &ife->stats.rx_packets, |
473 | &ife->stats.rx_errors, |
474 | &ife->stats.rx_dropped, |
475 | &ife->stats.rx_fifo_errors, |
476 | &ife->stats.rx_frame_errors, |
477 | &ife->stats.rx_compressed, /* missing for <= 1 */ |
478 | &ife->stats.rx_multicast, /* missing for <= 1 */ |
479 | &ife->stats.tx_bytes, /* missing for 0 */ |
480 | &ife->stats.tx_packets, |
481 | &ife->stats.tx_errors, |
482 | &ife->stats.tx_dropped, |
483 | &ife->stats.tx_fifo_errors, |
484 | &ife->stats.collisions, |
485 | &ife->stats.tx_carrier_errors, |
486 | &ife->stats.tx_compressed /* missing for <= 1 */ |
487 | ); |
488 | |
489 | if (procnetdev_vsn <= 1) { |
490 | if (procnetdev_vsn == 0) { |
491 | ife->stats.rx_bytes = 0; |
492 | ife->stats.tx_bytes = 0; |
493 | } |
494 | ife->stats.rx_multicast = 0; |
495 | ife->stats.rx_compressed = 0; |
496 | ife->stats.tx_compressed = 0; |
497 | } |
498 | } |
499 | |
500 | static int procnetdev_version(char *buf) |
501 | { |
502 | if (strstr(buf, "compressed")) |
503 | return 2; |
504 | if (strstr(buf, "bytes")) |
505 | return 1; |
506 | return 0; |
507 | } |
508 | |
509 | static int if_readconf(void) |
510 | { |
511 | int numreqs = 30; |
512 | struct ifconf ifc; |
513 | struct ifreq *ifr; |
514 | int n, err = -1; |
515 | int skfd; |
516 | |
517 | ifc.ifc_buf = NULL; |
518 | |
519 | /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets |
520 | (as of 2.1.128) */ |
521 | skfd = socket(AF_INET, SOCK_DGRAM, 0); |
522 | if (skfd < 0) { |
523 | bb_perror_msg("error: no inet socket available"); |
524 | return -1; |
525 | } |
526 | |
527 | for (;;) { |
528 | ifc.ifc_len = sizeof(struct ifreq) * numreqs; |
529 | ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len); |
530 | |
531 | if (ioctl_or_warn(skfd, SIOCGIFCONF, &ifc) < 0) { |
532 | goto out; |
533 | } |
534 | if (ifc.ifc_len == (int)(sizeof(struct ifreq) * numreqs)) { |
535 | /* assume it overflowed and try again */ |
536 | numreqs += 10; |
537 | continue; |
538 | } |
539 | break; |
540 | } |
541 | |
542 | ifr = ifc.ifc_req; |
543 | for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) { |
544 | add_interface(ifr->ifr_name); |
545 | ifr++; |
546 | } |
547 | err = 0; |
548 | |
549 | out: |
550 | close(skfd); |
551 | free(ifc.ifc_buf); |
552 | return err; |
553 | } |
554 | |
555 | static int if_readlist_proc(char *target) |
556 | { |
557 | static smallint proc_read; |
558 | |
559 | FILE *fh; |
560 | char buf[512]; |
561 | struct interface *ife; |
562 | int err, procnetdev_vsn; |
563 | |
564 | if (proc_read) |
565 | return 0; |
566 | if (!target) |
567 | proc_read = 1; |
568 | |
569 | fh = fopen_or_warn(_PATH_PROCNET_DEV, "r"); |
570 | if (!fh) { |
571 | return if_readconf(); |
572 | } |
573 | fgets(buf, sizeof buf, fh); /* eat line */ |
574 | fgets(buf, sizeof buf, fh); |
575 | |
576 | procnetdev_vsn = procnetdev_version(buf); |
577 | |
578 | err = 0; |
579 | while (fgets(buf, sizeof buf, fh)) { |
580 | char *s, name[128]; |
581 | |
582 | s = get_name(name, buf); |
583 | ife = add_interface(name); |
584 | get_dev_fields(s, ife, procnetdev_vsn); |
585 | ife->statistics_valid = 1; |
586 | if (target && !strcmp(target, name)) |
587 | break; |
588 | } |
589 | if (ferror(fh)) { |
590 | bb_perror_msg(_PATH_PROCNET_DEV); |
591 | err = -1; |
592 | proc_read = 0; |
593 | } |
594 | fclose(fh); |
595 | return err; |
596 | } |
597 | |
598 | static int if_readlist(void) |
599 | { |
600 | int err = if_readlist_proc(NULL); |
601 | /* Needed in order to get ethN:M aliases */ |
602 | if (!err) |
603 | err = if_readconf(); |
604 | return err; |
605 | } |
606 | |
607 | /* Fetch the interface configuration from the kernel. */ |
608 | static int if_fetch(struct interface *ife) |
609 | { |
610 | struct ifreq ifr; |
611 | char *ifname = ife->name; |
612 | int skfd; |
613 | |
614 | skfd = xsocket(AF_INET, SOCK_DGRAM, 0); |
615 | |
616 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
617 | if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) { |
618 | close(skfd); |
619 | return -1; |
620 | } |
621 | ife->flags = ifr.ifr_flags; |
622 | |
623 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
624 | memset(ife->hwaddr, 0, 32); |
625 | if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0) |
626 | memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8); |
627 | |
628 | ife->type = ifr.ifr_hwaddr.sa_family; |
629 | |
630 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
631 | ife->metric = 0; |
632 | if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0) |
633 | ife->metric = ifr.ifr_metric; |
634 | |
635 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
636 | ife->mtu = 0; |
637 | if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0) |
638 | ife->mtu = ifr.ifr_mtu; |
639 | |
640 | memset(&ife->map, 0, sizeof(struct ifmap)); |
641 | #ifdef SIOCGIFMAP |
642 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
643 | if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0) |
644 | ife->map = ifr.ifr_map; |
645 | #endif |
646 | |
647 | #ifdef HAVE_TXQUEUELEN |
648 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
649 | ife->tx_queue_len = -1; /* unknown value */ |
650 | if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0) |
651 | ife->tx_queue_len = ifr.ifr_qlen; |
652 | #else |
653 | ife->tx_queue_len = -1; /* unknown value */ |
654 | #endif |
655 | |
656 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
657 | ifr.ifr_addr.sa_family = AF_INET; |
658 | memset(&ife->addr, 0, sizeof(struct sockaddr)); |
659 | if (ioctl(skfd, SIOCGIFADDR, &ifr) == 0) { |
660 | ife->has_ip = 1; |
661 | ife->addr = ifr.ifr_addr; |
662 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
663 | memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); |
664 | if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0) |
665 | ife->dstaddr = ifr.ifr_dstaddr; |
666 | |
667 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
668 | memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); |
669 | if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0) |
670 | ife->broadaddr = ifr.ifr_broadaddr; |
671 | |
672 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
673 | memset(&ife->netmask, 0, sizeof(struct sockaddr)); |
674 | if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0) |
675 | ife->netmask = ifr.ifr_netmask; |
676 | } |
677 | |
678 | close(skfd); |
679 | return 0; |
680 | } |
681 | |
682 | static int do_if_fetch(struct interface *ife) |
683 | { |
684 | if (if_fetch(ife) < 0) { |
685 | const char *errmsg; |
686 | |
687 | if (errno == ENODEV) { |
688 | /* Give better error message for this case. */ |
689 | errmsg = "Device not found"; |
690 | } else { |
691 | errmsg = strerror(errno); |
692 | } |
693 | bb_error_msg("%s: error fetching interface information: %s", |
694 | ife->name, errmsg); |
695 | return -1; |
696 | } |
697 | return 0; |
698 | } |
699 | |
700 | static const struct hwtype unspec_hwtype = { |
701 | .name = "unspec", |
702 | .title = "UNSPEC", |
703 | .type = -1, |
704 | .print = UNSPEC_print |
705 | }; |
706 | |
707 | static const struct hwtype loop_hwtype = { |
708 | .name = "loop", |
709 | .title = "Local Loopback", |
710 | .type = ARPHRD_LOOPBACK |
711 | }; |
712 | |
713 | /* Display an Ethernet address in readable format. */ |
714 | static char* FAST_FUNC ether_print(unsigned char *ptr) |
715 | { |
716 | static char *buff; |
717 | |
718 | free(buff); |
719 | buff = xasprintf("%02X:%02X:%02X:%02X:%02X:%02X", |
720 | (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377), |
721 | (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377) |
722 | ); |
723 | return buff; |
724 | } |
725 | |
726 | static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap); |
727 | |
728 | static const struct hwtype ether_hwtype = { |
729 | .name = "ether", |
730 | .title = "Ethernet", |
731 | .type = ARPHRD_ETHER, |
732 | .alen = ETH_ALEN, |
733 | .print = ether_print, |
734 | .input = ether_input |
735 | }; |
736 | |
737 | static unsigned hexchar2int(char c) |
738 | { |
739 | if (isdigit(c)) |
740 | return c - '0'; |
741 | c &= ~0x20; /* a -> A */ |
742 | if ((unsigned)(c - 'A') <= 5) |
743 | return c - ('A' - 10); |
744 | return ~0U; |
745 | } |
746 | |
747 | /* Input an Ethernet address and convert to binary. */ |
748 | static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap) |
749 | { |
750 | unsigned char *ptr; |
751 | char c; |
752 | int i; |
753 | unsigned val; |
754 | |
755 | sap->sa_family = ether_hwtype.type; |
756 | ptr = (unsigned char*) sap->sa_data; |
757 | |
758 | i = 0; |
759 | while ((*bufp != '\0') && (i < ETH_ALEN)) { |
760 | val = hexchar2int(*bufp++) * 0x10; |
761 | if (val > 0xff) { |
762 | errno = EINVAL; |
763 | return -1; |
764 | } |
765 | c = *bufp; |
766 | if (c == ':' || c == 0) |
767 | val >>= 4; |
768 | else { |
769 | val |= hexchar2int(c); |
770 | if (val > 0xff) { |
771 | errno = EINVAL; |
772 | return -1; |
773 | } |
774 | } |
775 | if (c != 0) |
776 | bufp++; |
777 | *ptr++ = (unsigned char) val; |
778 | i++; |
779 | |
780 | /* We might get a semicolon here - not required. */ |
781 | if (*bufp == ':') { |
782 | bufp++; |
783 | } |
784 | } |
785 | return 0; |
786 | } |
787 | |
788 | static const struct hwtype ppp_hwtype = { |
789 | .name = "ppp", |
790 | .title = "Point-to-Point Protocol", |
791 | .type = ARPHRD_PPP |
792 | }; |
793 | |
794 | #if ENABLE_FEATURE_IPV6 |
795 | static const struct hwtype sit_hwtype = { |
796 | .name = "sit", |
797 | .title = "IPv6-in-IPv4", |
798 | .type = ARPHRD_SIT, |
799 | .print = UNSPEC_print, |
800 | .suppress_null_addr = 1 |
801 | }; |
802 | #endif |
803 | #if ENABLE_FEATURE_HWIB |
804 | static const struct hwtype ib_hwtype = { |
805 | .name = "infiniband", |
806 | .title = "InfiniBand", |
807 | .type = ARPHRD_INFINIBAND, |
808 | .alen = INFINIBAND_ALEN, |
809 | .print = UNSPEC_print, |
810 | .input = in_ib, |
811 | }; |
812 | #endif |
813 | |
814 | |
815 | static const struct hwtype *const hwtypes[] = { |
816 | &loop_hwtype, |
817 | ðer_hwtype, |
818 | &ppp_hwtype, |
819 | &unspec_hwtype, |
820 | #if ENABLE_FEATURE_IPV6 |
821 | &sit_hwtype, |
822 | #endif |
823 | #if ENABLE_FEATURE_HWIB |
824 | &ib_hwtype, |
825 | #endif |
826 | NULL |
827 | }; |
828 | |
829 | #ifdef IFF_PORTSEL |
830 | static const char *const if_port_text[] = { |
831 | /* Keep in step with <linux/netdevice.h> */ |
832 | "unknown", |
833 | "10base2", |
834 | "10baseT", |
835 | "AUI", |
836 | "100baseT", |
837 | "100baseTX", |
838 | "100baseFX", |
839 | NULL |
840 | }; |
841 | #endif |
842 | |
843 | /* Check our hardware type table for this type. */ |
844 | const struct hwtype* FAST_FUNC get_hwtype(const char *name) |
845 | { |
846 | const struct hwtype *const *hwp; |
847 | |
848 | hwp = hwtypes; |
849 | while (*hwp != NULL) { |
850 | if (!strcmp((*hwp)->name, name)) |
851 | return (*hwp); |
852 | hwp++; |
853 | } |
854 | return NULL; |
855 | } |
856 | |
857 | /* Check our hardware type table for this type. */ |
858 | const struct hwtype* FAST_FUNC get_hwntype(int type) |
859 | { |
860 | const struct hwtype *const *hwp; |
861 | |
862 | hwp = hwtypes; |
863 | while (*hwp != NULL) { |
864 | if ((*hwp)->type == type) |
865 | return *hwp; |
866 | hwp++; |
867 | } |
868 | return NULL; |
869 | } |
870 | |
871 | /* return 1 if address is all zeros */ |
872 | static int hw_null_address(const struct hwtype *hw, void *ap) |
873 | { |
874 | int i; |
875 | unsigned char *address = (unsigned char *) ap; |
876 | |
877 | for (i = 0; i < hw->alen; i++) |
878 | if (address[i]) |
879 | return 0; |
880 | return 1; |
881 | } |
882 | |
883 | static const char TRext[] ALIGN1 = "\0\0\0Ki\0Mi\0Gi\0Ti"; |
884 | |
885 | static void print_bytes_scaled(unsigned long long ull, const char *end) |
886 | { |
887 | unsigned long long int_part; |
888 | const char *ext; |
889 | unsigned int frac_part; |
890 | int i; |
891 | |
892 | frac_part = 0; |
893 | ext = TRext; |
894 | int_part = ull; |
895 | i = 4; |
896 | do { |
897 | if (int_part >= 1024) { |
898 | frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024; |
899 | int_part /= 1024; |
900 | ext += 3; /* KiB, MiB, GiB, TiB */ |
901 | } |
902 | --i; |
903 | } while (i); |
904 | |
905 | printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end); |
906 | } |
907 | |
908 | |
909 | #ifdef HAVE_AFINET6 |
910 | #define IPV6_ADDR_ANY 0x0000U |
911 | |
912 | #define IPV6_ADDR_UNICAST 0x0001U |
913 | #define IPV6_ADDR_MULTICAST 0x0002U |
914 | #define IPV6_ADDR_ANYCAST 0x0004U |
915 | |
916 | #define IPV6_ADDR_LOOPBACK 0x0010U |
917 | #define IPV6_ADDR_LINKLOCAL 0x0020U |
918 | #define IPV6_ADDR_SITELOCAL 0x0040U |
919 | |
920 | #define IPV6_ADDR_COMPATv4 0x0080U |
921 | |
922 | #define IPV6_ADDR_SCOPE_MASK 0x00f0U |
923 | |
924 | #define IPV6_ADDR_MAPPED 0x1000U |
925 | #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ |
926 | |
927 | |
928 | static void ife_print6(struct interface *ptr) |
929 | { |
930 | |
931 | FILE *f; |
932 | char addr6[40], devname[20]; |
933 | struct sockaddr_in6 sap; |
934 | int plen, scope, dad_status, if_idx; |
935 | char addr6p[8][5]; |
936 | |
937 | f = fopen_for_read(_PATH_PROCNET_IFINET6); |
938 | if (f == NULL) |
939 | return; |
940 | |
941 | while (fscanf |
942 | (f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n", |
943 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], |
944 | addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, |
945 | &dad_status, devname) != EOF |
946 | ) { |
947 | if (!strcmp(devname, ptr->name)) { |
948 | sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", |
949 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
950 | addr6p[4], addr6p[5], addr6p[6], addr6p[7]); |
951 | inet_pton(AF_INET6, addr6, |
952 | (struct sockaddr *) &sap.sin6_addr); |
953 | sap.sin6_family = AF_INET6; |
954 | printf(" inet6 addr: %s/%d", |
955 | INET6_sprint((struct sockaddr *) &sap, 1), |
956 | plen); |
957 | printf(" Scope:"); |
958 | switch (scope & IPV6_ADDR_SCOPE_MASK) { |
959 | case 0: |
960 | puts("Global"); |
961 | break; |
962 | case IPV6_ADDR_LINKLOCAL: |
963 | puts("Link"); |
964 | break; |
965 | case IPV6_ADDR_SITELOCAL: |
966 | puts("Site"); |
967 | break; |
968 | case IPV6_ADDR_COMPATv4: |
969 | puts("Compat"); |
970 | break; |
971 | case IPV6_ADDR_LOOPBACK: |
972 | puts("Host"); |
973 | break; |
974 | default: |
975 | puts("Unknown"); |
976 | } |
977 | } |
978 | } |
979 | fclose(f); |
980 | } |
981 | #else |
982 | #define ife_print6(a) ((void)0) |
983 | #endif |
984 | |
985 | static void ife_print(struct interface *ptr) |
986 | { |
987 | const struct aftype *ap; |
988 | const struct hwtype *hw; |
989 | int hf; |
990 | int can_compress = 0; |
991 | |
992 | ap = get_afntype(ptr->addr.sa_family); |
993 | if (ap == NULL) |
994 | ap = get_afntype(0); |
995 | |
996 | hf = ptr->type; |
997 | |
998 | if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6) |
999 | can_compress = 1; |
1000 | |
1001 | hw = get_hwntype(hf); |
1002 | if (hw == NULL) |
1003 | hw = get_hwntype(-1); |
1004 | |
1005 | printf("%-9s Link encap:%s ", ptr->name, hw->title); |
1006 | /* For some hardware types (eg Ash, ATM) we don't print the |
1007 | hardware address if it's null. */ |
1008 | if (hw->print != NULL |
1009 | && !(hw_null_address(hw, ptr->hwaddr) && hw->suppress_null_addr) |
1010 | ) { |
1011 | printf("HWaddr %s ", hw->print((unsigned char *)ptr->hwaddr)); |
1012 | } |
1013 | #ifdef IFF_PORTSEL |
1014 | if (ptr->flags & IFF_PORTSEL) { |
1015 | printf("Media:%s", if_port_text[ptr->map.port] /* [0] */); |
1016 | if (ptr->flags & IFF_AUTOMEDIA) |
1017 | printf("(auto)"); |
1018 | } |
1019 | #endif |
1020 | bb_putchar('\n'); |
1021 | |
1022 | if (ptr->has_ip) { |
1023 | printf(" %s addr:%s ", ap->name, |
1024 | ap->sprint(&ptr->addr, 1)); |
1025 | if (ptr->flags & IFF_POINTOPOINT) { |
1026 | printf(" P-t-P:%s ", ap->sprint(&ptr->dstaddr, 1)); |
1027 | } |
1028 | if (ptr->flags & IFF_BROADCAST) { |
1029 | printf(" Bcast:%s ", ap->sprint(&ptr->broadaddr, 1)); |
1030 | } |
1031 | printf(" Mask:%s\n", ap->sprint(&ptr->netmask, 1)); |
1032 | } |
1033 | |
1034 | ife_print6(ptr); |
1035 | |
1036 | printf(" "); |
1037 | /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */ |
1038 | |
1039 | if (ptr->flags == 0) { |
1040 | printf("[NO FLAGS] "); |
1041 | } else { |
1042 | static const char ife_print_flags_strs[] ALIGN1 = |
1043 | "UP\0" |
1044 | "BROADCAST\0" |
1045 | "DEBUG\0" |
1046 | "LOOPBACK\0" |
1047 | "POINTOPOINT\0" |
1048 | "NOTRAILERS\0" |
1049 | "RUNNING\0" |
1050 | "NOARP\0" |
1051 | "PROMISC\0" |
1052 | "ALLMULTI\0" |
1053 | "SLAVE\0" |
1054 | "MASTER\0" |
1055 | "MULTICAST\0" |
1056 | #ifdef HAVE_DYNAMIC |
1057 | "DYNAMIC\0" |
1058 | #endif |
1059 | ; |
1060 | static const unsigned short ife_print_flags_mask[] ALIGN2 = { |
1061 | IFF_UP, |
1062 | IFF_BROADCAST, |
1063 | IFF_DEBUG, |
1064 | IFF_LOOPBACK, |
1065 | IFF_POINTOPOINT, |
1066 | IFF_NOTRAILERS, |
1067 | IFF_RUNNING, |
1068 | IFF_NOARP, |
1069 | IFF_PROMISC, |
1070 | IFF_ALLMULTI, |
1071 | IFF_SLAVE, |
1072 | IFF_MASTER, |
1073 | IFF_MULTICAST |
1074 | #ifdef HAVE_DYNAMIC |
1075 | ,IFF_DYNAMIC |
1076 | #endif |
1077 | }; |
1078 | const unsigned short *mask = ife_print_flags_mask; |
1079 | const char *str = ife_print_flags_strs; |
1080 | do { |
1081 | if (ptr->flags & *mask) { |
1082 | printf("%s ", str); |
1083 | } |
1084 | mask++; |
1085 | str += strlen(str) + 1; |
1086 | } while (*str); |
1087 | } |
1088 | |
1089 | /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */ |
1090 | printf(" MTU:%d Metric:%d", ptr->mtu, ptr->metric ? ptr->metric : 1); |
1091 | #ifdef SIOCSKEEPALIVE |
1092 | if (ptr->outfill || ptr->keepalive) |
1093 | printf(" Outfill:%d Keepalive:%d", ptr->outfill, ptr->keepalive); |
1094 | #endif |
1095 | bb_putchar('\n'); |
1096 | |
1097 | /* If needed, display the interface statistics. */ |
1098 | |
1099 | if (ptr->statistics_valid) { |
1100 | /* XXX: statistics are currently only printed for the primary address, |
1101 | * not for the aliases, although strictly speaking they're shared |
1102 | * by all addresses. |
1103 | */ |
1104 | printf(" "); |
1105 | |
1106 | printf("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n", |
1107 | ptr->stats.rx_packets, ptr->stats.rx_errors, |
1108 | ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors, |
1109 | ptr->stats.rx_frame_errors); |
1110 | if (can_compress) |
1111 | printf(" compressed:%lu\n", |
1112 | ptr->stats.rx_compressed); |
1113 | printf(" "); |
1114 | printf("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n", |
1115 | ptr->stats.tx_packets, ptr->stats.tx_errors, |
1116 | ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors, |
1117 | ptr->stats.tx_carrier_errors); |
1118 | printf(" collisions:%lu ", ptr->stats.collisions); |
1119 | if (can_compress) |
1120 | printf("compressed:%lu ", ptr->stats.tx_compressed); |
1121 | if (ptr->tx_queue_len != -1) |
1122 | printf("txqueuelen:%d ", ptr->tx_queue_len); |
1123 | printf("\n R"); |
1124 | print_bytes_scaled(ptr->stats.rx_bytes, " T"); |
1125 | print_bytes_scaled(ptr->stats.tx_bytes, "\n"); |
1126 | } |
1127 | |
1128 | if (ptr->map.irq || ptr->map.mem_start |
1129 | || ptr->map.dma || ptr->map.base_addr |
1130 | ) { |
1131 | printf(" "); |
1132 | if (ptr->map.irq) |
1133 | printf("Interrupt:%d ", ptr->map.irq); |
1134 | if (ptr->map.base_addr >= 0x100) /* Only print devices using it for |
1135 | I/O maps */ |
1136 | printf("Base address:0x%lx ", |
1137 | (unsigned long) ptr->map.base_addr); |
1138 | if (ptr->map.mem_start) { |
1139 | printf("Memory:%lx-%lx ", ptr->map.mem_start, |
1140 | ptr->map.mem_end); |
1141 | } |
1142 | if (ptr->map.dma) |
1143 | printf("DMA chan:%x ", ptr->map.dma); |
1144 | bb_putchar('\n'); |
1145 | } |
1146 | bb_putchar('\n'); |
1147 | } |
1148 | |
1149 | static int do_if_print(struct interface *ife) /*, int *opt_a)*/ |
1150 | { |
1151 | int res; |
1152 | |
1153 | res = do_if_fetch(ife); |
1154 | if (res >= 0) { |
1155 | if ((ife->flags & IFF_UP) || interface_opt_a) |
1156 | ife_print(ife); |
1157 | } |
1158 | return res; |
1159 | } |
1160 | |
1161 | static struct interface *lookup_interface(char *name) |
1162 | { |
1163 | struct interface *ife = NULL; |
1164 | |
1165 | if (if_readlist_proc(name) < 0) |
1166 | return NULL; |
1167 | ife = add_interface(name); |
1168 | return ife; |
1169 | } |
1170 | |
1171 | #ifdef UNUSED |
1172 | static int for_all_interfaces(int (*doit) (struct interface *, void *), |
1173 | void *cookie) |
1174 | { |
1175 | struct interface *ife; |
1176 | |
1177 | if (!int_list && (if_readlist() < 0)) |
1178 | return -1; |
1179 | for (ife = int_list; ife; ife = ife->next) { |
1180 | int err = doit(ife, cookie); |
1181 | if (err) |
1182 | return err; |
1183 | } |
1184 | return 0; |
1185 | } |
1186 | #endif |
1187 | |
1188 | /* for ipv4 add/del modes */ |
1189 | static int if_print(char *ifname) |
1190 | { |
1191 | struct interface *ife; |
1192 | int res; |
1193 | |
1194 | if (!ifname) { |
1195 | /*res = for_all_interfaces(do_if_print, &interface_opt_a);*/ |
1196 | if (!int_list && (if_readlist() < 0)) |
1197 | return -1; |
1198 | for (ife = int_list; ife; ife = ife->next) { |
1199 | int err = do_if_print(ife); /*, &interface_opt_a);*/ |
1200 | if (err) |
1201 | return err; |
1202 | } |
1203 | return 0; |
1204 | } |
1205 | ife = lookup_interface(ifname); |
1206 | res = do_if_fetch(ife); |
1207 | if (res >= 0) |
1208 | ife_print(ife); |
1209 | return res; |
1210 | } |
1211 | |
1212 | #if ENABLE_FEATURE_HWIB |
1213 | /* Input an Infiniband address and convert to binary. */ |
1214 | int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) |
1215 | { |
1216 | sap->sa_family = ib_hwtype.type; |
1217 | //TODO: error check? |
1218 | hex2bin((char*)sap->sa_data, bufp, INFINIBAND_ALEN); |
1219 | # ifdef HWIB_DEBUG |
1220 | fprintf(stderr, "in_ib(%s): %s\n", bufp, UNSPEC_print(sap->sa_data)); |
1221 | # endif |
1222 | return 0; |
1223 | } |
1224 | #endif |
1225 | |
1226 | int FAST_FUNC display_interfaces(char *ifname) |
1227 | { |
1228 | int status; |
1229 | |
1230 | status = if_print(ifname); |
1231 | |
1232 | return (status < 0); /* status < 0 == 1 -- error */ |
1233 | } |