Contents of /tags/mkinitrd-6_1_2/busybox/networking/interface.c
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Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
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Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
File MIME type: text/plain
File size: 30343 byte(s)
tagged 'mkinitrd-6_1_2'
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 | |
34 | #include <net/if.h> |
35 | #include <net/if_arp.h> |
36 | #include "inet_common.h" |
37 | #include "libbb.h" |
38 | |
39 | |
40 | #if ENABLE_FEATURE_HWIB |
41 | /* #include <linux/if_infiniband.h> */ |
42 | #undef INFINIBAND_ALEN |
43 | #define INFINIBAND_ALEN 20 |
44 | #endif |
45 | |
46 | #if ENABLE_FEATURE_IPV6 |
47 | # define HAVE_AFINET6 1 |
48 | #else |
49 | # undef HAVE_AFINET6 |
50 | #endif |
51 | |
52 | #define _PATH_PROCNET_DEV "/proc/net/dev" |
53 | #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" |
54 | |
55 | #ifdef HAVE_AFINET6 |
56 | |
57 | #ifndef _LINUX_IN6_H |
58 | /* |
59 | * This is in linux/include/net/ipv6.h. |
60 | */ |
61 | |
62 | struct in6_ifreq { |
63 | struct in6_addr ifr6_addr; |
64 | uint32_t ifr6_prefixlen; |
65 | unsigned int ifr6_ifindex; |
66 | }; |
67 | |
68 | #endif |
69 | |
70 | #endif /* HAVE_AFINET6 */ |
71 | |
72 | /* Defines for glibc2.0 users. */ |
73 | #ifndef SIOCSIFTXQLEN |
74 | #define SIOCSIFTXQLEN 0x8943 |
75 | #define SIOCGIFTXQLEN 0x8942 |
76 | #endif |
77 | |
78 | /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */ |
79 | #ifndef ifr_qlen |
80 | #define ifr_qlen ifr_ifru.ifru_mtu |
81 | #endif |
82 | |
83 | #ifndef HAVE_TXQUEUELEN |
84 | #define HAVE_TXQUEUELEN 1 |
85 | #endif |
86 | |
87 | #ifndef IFF_DYNAMIC |
88 | #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ |
89 | #endif |
90 | |
91 | /* Display an Internet socket address. */ |
92 | static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric) |
93 | { |
94 | static char *buff; |
95 | |
96 | free(buff); |
97 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
98 | return "[NONE SET]"; |
99 | buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00); |
100 | return buff; |
101 | } |
102 | |
103 | #ifdef UNUSED_AND_BUGGY |
104 | static int INET_getsock(char *bufp, struct sockaddr *sap) |
105 | { |
106 | char *sp = bufp, *bp; |
107 | unsigned int i; |
108 | unsigned val; |
109 | struct sockaddr_in *sock_in; |
110 | |
111 | sock_in = (struct sockaddr_in *) sap; |
112 | sock_in->sin_family = AF_INET; |
113 | sock_in->sin_port = 0; |
114 | |
115 | val = 0; |
116 | bp = (char *) &val; |
117 | for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) { |
118 | *sp = toupper(*sp); |
119 | |
120 | if ((unsigned)(*sp - 'A') <= 5) |
121 | bp[i] |= (int) (*sp - ('A' - 10)); |
122 | else if (isdigit(*sp)) |
123 | bp[i] |= (int) (*sp - '0'); |
124 | else |
125 | return -1; |
126 | |
127 | bp[i] <<= 4; |
128 | sp++; |
129 | *sp = toupper(*sp); |
130 | |
131 | if ((unsigned)(*sp - 'A') <= 5) |
132 | bp[i] |= (int) (*sp - ('A' - 10)); |
133 | else if (isdigit(*sp)) |
134 | bp[i] |= (int) (*sp - '0'); |
135 | else |
136 | return -1; |
137 | |
138 | sp++; |
139 | } |
140 | sock_in->sin_addr.s_addr = htonl(val); |
141 | |
142 | return (sp - bufp); |
143 | } |
144 | #endif |
145 | |
146 | static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap) |
147 | { |
148 | return INET_resolve(bufp, (struct sockaddr_in *) sap, 0); |
149 | /* |
150 | switch (type) { |
151 | case 1: |
152 | return (INET_getsock(bufp, sap)); |
153 | case 256: |
154 | return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1)); |
155 | default: |
156 | return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0)); |
157 | } |
158 | */ |
159 | } |
160 | |
161 | static const struct aftype inet_aftype = { |
162 | .name = "inet", |
163 | .title = "DARPA Internet", |
164 | .af = AF_INET, |
165 | .alen = 4, |
166 | .sprint = INET_sprint, |
167 | .input = INET_input, |
168 | }; |
169 | |
170 | #ifdef HAVE_AFINET6 |
171 | |
172 | /* Display an Internet socket address. */ |
173 | /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */ |
174 | static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric) |
175 | { |
176 | static char *buff; |
177 | |
178 | free(buff); |
179 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
180 | return "[NONE SET]"; |
181 | buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric); |
182 | return buff; |
183 | } |
184 | |
185 | #ifdef UNUSED |
186 | static int INET6_getsock(char *bufp, struct sockaddr *sap) |
187 | { |
188 | struct sockaddr_in6 *sin6; |
189 | |
190 | sin6 = (struct sockaddr_in6 *) sap; |
191 | sin6->sin6_family = AF_INET6; |
192 | sin6->sin6_port = 0; |
193 | |
194 | if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0) |
195 | return -1; |
196 | |
197 | return 16; /* ?;) */ |
198 | } |
199 | #endif |
200 | |
201 | static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap) |
202 | { |
203 | return INET6_resolve(bufp, (struct sockaddr_in6 *) sap); |
204 | /* |
205 | switch (type) { |
206 | case 1: |
207 | return (INET6_getsock(bufp, sap)); |
208 | default: |
209 | return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap)); |
210 | } |
211 | */ |
212 | } |
213 | |
214 | static const struct aftype inet6_aftype = { |
215 | .name = "inet6", |
216 | .title = "IPv6", |
217 | .af = AF_INET6, |
218 | .alen = sizeof(struct in6_addr), |
219 | .sprint = INET6_sprint, |
220 | .input = INET6_input, |
221 | }; |
222 | |
223 | #endif /* HAVE_AFINET6 */ |
224 | |
225 | /* Display an UNSPEC address. */ |
226 | static char* FAST_FUNC UNSPEC_print(unsigned char *ptr) |
227 | { |
228 | static char *buff; |
229 | |
230 | char *pos; |
231 | unsigned int i; |
232 | |
233 | if (!buff) |
234 | buff = xmalloc(sizeof(struct sockaddr) * 3 + 1); |
235 | pos = buff; |
236 | for (i = 0; i < sizeof(struct sockaddr); i++) { |
237 | /* careful -- not every libc's sprintf returns # bytes written */ |
238 | sprintf(pos, "%02X-", (*ptr++ & 0377)); |
239 | pos += 3; |
240 | } |
241 | /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */ |
242 | *--pos = '\0'; |
243 | return buff; |
244 | } |
245 | |
246 | /* Display an UNSPEC socket address. */ |
247 | static const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM) |
248 | { |
249 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
250 | return "[NONE SET]"; |
251 | return UNSPEC_print((unsigned char *)sap->sa_data); |
252 | } |
253 | |
254 | static const struct aftype unspec_aftype = { |
255 | .name = "unspec", |
256 | .title = "UNSPEC", |
257 | .af = AF_UNSPEC, |
258 | .alen = 0, |
259 | .print = UNSPEC_print, |
260 | .sprint = UNSPEC_sprint, |
261 | }; |
262 | |
263 | static const struct aftype *const aftypes[] = { |
264 | &inet_aftype, |
265 | #ifdef HAVE_AFINET6 |
266 | &inet6_aftype, |
267 | #endif |
268 | &unspec_aftype, |
269 | NULL |
270 | }; |
271 | |
272 | /* Check our protocol family table for this family. */ |
273 | const struct aftype* FAST_FUNC get_aftype(const char *name) |
274 | { |
275 | const struct aftype *const *afp; |
276 | |
277 | afp = aftypes; |
278 | while (*afp != NULL) { |
279 | if (!strcmp((*afp)->name, name)) |
280 | return (*afp); |
281 | afp++; |
282 | } |
283 | return NULL; |
284 | } |
285 | |
286 | /* Check our protocol family table for this family. */ |
287 | static const struct aftype *get_afntype(int af) |
288 | { |
289 | const struct aftype *const *afp; |
290 | |
291 | afp = aftypes; |
292 | while (*afp != NULL) { |
293 | if ((*afp)->af == af) |
294 | return *afp; |
295 | afp++; |
296 | } |
297 | return NULL; |
298 | } |
299 | |
300 | struct user_net_device_stats { |
301 | unsigned long long rx_packets; /* total packets received */ |
302 | unsigned long long tx_packets; /* total packets transmitted */ |
303 | unsigned long long rx_bytes; /* total bytes received */ |
304 | unsigned long long tx_bytes; /* total bytes transmitted */ |
305 | unsigned long rx_errors; /* bad packets received */ |
306 | unsigned long tx_errors; /* packet transmit problems */ |
307 | unsigned long rx_dropped; /* no space in linux buffers */ |
308 | unsigned long tx_dropped; /* no space available in linux */ |
309 | unsigned long rx_multicast; /* multicast packets received */ |
310 | unsigned long rx_compressed; |
311 | unsigned long tx_compressed; |
312 | unsigned long collisions; |
313 | |
314 | /* detailed rx_errors: */ |
315 | unsigned long rx_length_errors; |
316 | unsigned long rx_over_errors; /* receiver ring buff overflow */ |
317 | unsigned long rx_crc_errors; /* recved pkt with crc error */ |
318 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ |
319 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ |
320 | unsigned long rx_missed_errors; /* receiver missed packet */ |
321 | /* detailed tx_errors */ |
322 | unsigned long tx_aborted_errors; |
323 | unsigned long tx_carrier_errors; |
324 | unsigned long tx_fifo_errors; |
325 | unsigned long tx_heartbeat_errors; |
326 | unsigned long tx_window_errors; |
327 | }; |
328 | |
329 | struct interface { |
330 | struct interface *next, *prev; |
331 | char name[IFNAMSIZ]; /* interface name */ |
332 | short type; /* if type */ |
333 | short flags; /* various flags */ |
334 | int metric; /* routing metric */ |
335 | int mtu; /* MTU value */ |
336 | int tx_queue_len; /* transmit queue length */ |
337 | struct ifmap map; /* hardware setup */ |
338 | struct sockaddr addr; /* IP address */ |
339 | struct sockaddr dstaddr; /* P-P IP address */ |
340 | struct sockaddr broadaddr; /* IP broadcast address */ |
341 | struct sockaddr netmask; /* IP network mask */ |
342 | int has_ip; |
343 | char hwaddr[32]; /* HW address */ |
344 | int statistics_valid; |
345 | struct user_net_device_stats stats; /* statistics */ |
346 | int keepalive; /* keepalive value for SLIP */ |
347 | int outfill; /* outfill value for SLIP */ |
348 | }; |
349 | |
350 | |
351 | smallint interface_opt_a; /* show all interfaces */ |
352 | |
353 | static struct interface *int_list, *int_last; |
354 | |
355 | |
356 | #if 0 |
357 | /* like strcmp(), but knows about numbers */ |
358 | except that the freshly added calls to xatoul() brf on ethernet aliases with |
359 | uClibc with e.g.: ife->name='lo' name='eth0:1' |
360 | static int nstrcmp(const char *a, const char *b) |
361 | { |
362 | const char *a_ptr = a; |
363 | const char *b_ptr = b; |
364 | |
365 | while (*a == *b) { |
366 | if (*a == '\0') { |
367 | return 0; |
368 | } |
369 | if (!isdigit(*a) && isdigit(*(a+1))) { |
370 | a_ptr = a+1; |
371 | b_ptr = b+1; |
372 | } |
373 | a++; |
374 | b++; |
375 | } |
376 | |
377 | if (isdigit(*a) && isdigit(*b)) { |
378 | return xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1; |
379 | } |
380 | return *a - *b; |
381 | } |
382 | #endif |
383 | |
384 | static struct interface *add_interface(char *name) |
385 | { |
386 | struct interface *ife, **nextp, *new; |
387 | |
388 | for (ife = int_last; ife; ife = ife->prev) { |
389 | int n = /*n*/strcmp(ife->name, name); |
390 | |
391 | if (n == 0) |
392 | return ife; |
393 | if (n < 0) |
394 | break; |
395 | } |
396 | |
397 | new = xzalloc(sizeof(*new)); |
398 | strncpy(new->name, name, IFNAMSIZ); |
399 | nextp = ife ? &ife->next : &int_list; |
400 | new->prev = ife; |
401 | new->next = *nextp; |
402 | if (new->next) |
403 | new->next->prev = new; |
404 | else |
405 | int_last = new; |
406 | *nextp = new; |
407 | return new; |
408 | } |
409 | |
410 | static char *get_name(char *name, char *p) |
411 | { |
412 | /* Extract <name> from nul-terminated p where p matches |
413 | <name>: after leading whitespace. |
414 | If match is not made, set name empty and return unchanged p */ |
415 | int namestart = 0, nameend = 0; |
416 | |
417 | while (isspace(p[namestart])) |
418 | namestart++; |
419 | nameend = namestart; |
420 | while (p[nameend] && p[nameend] != ':' && !isspace(p[nameend])) |
421 | nameend++; |
422 | if (p[nameend] == ':') { |
423 | if ((nameend - namestart) < IFNAMSIZ) { |
424 | memcpy(name, &p[namestart], nameend - namestart); |
425 | name[nameend - namestart] = '\0'; |
426 | p = &p[nameend]; |
427 | } else { |
428 | /* Interface name too large */ |
429 | name[0] = '\0'; |
430 | } |
431 | } else { |
432 | /* trailing ':' not found - return empty */ |
433 | name[0] = '\0'; |
434 | } |
435 | return p + 1; |
436 | } |
437 | |
438 | /* If scanf supports size qualifiers for %n conversions, then we can |
439 | * use a modified fmt that simply stores the position in the fields |
440 | * having no associated fields in the proc string. Of course, we need |
441 | * to zero them again when we're done. But that is smaller than the |
442 | * old approach of multiple scanf occurrences with large numbers of |
443 | * args. */ |
444 | |
445 | /* static const char *const ss_fmt[] = { */ |
446 | /* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */ |
447 | /* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */ |
448 | /* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */ |
449 | /* }; */ |
450 | |
451 | /* Lie about the size of the int pointed to for %n. */ |
452 | #if INT_MAX == LONG_MAX |
453 | static const char *const ss_fmt[] = { |
454 | "%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u", |
455 | "%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u", |
456 | "%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u" |
457 | }; |
458 | #else |
459 | static const char *const ss_fmt[] = { |
460 | "%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu", |
461 | "%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu", |
462 | "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" |
463 | }; |
464 | |
465 | #endif |
466 | |
467 | static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn) |
468 | { |
469 | memset(&ife->stats, 0, sizeof(struct user_net_device_stats)); |
470 | |
471 | sscanf(bp, ss_fmt[procnetdev_vsn], |
472 | &ife->stats.rx_bytes, /* missing for 0 */ |
473 | &ife->stats.rx_packets, |
474 | &ife->stats.rx_errors, |
475 | &ife->stats.rx_dropped, |
476 | &ife->stats.rx_fifo_errors, |
477 | &ife->stats.rx_frame_errors, |
478 | &ife->stats.rx_compressed, /* missing for <= 1 */ |
479 | &ife->stats.rx_multicast, /* missing for <= 1 */ |
480 | &ife->stats.tx_bytes, /* missing for 0 */ |
481 | &ife->stats.tx_packets, |
482 | &ife->stats.tx_errors, |
483 | &ife->stats.tx_dropped, |
484 | &ife->stats.tx_fifo_errors, |
485 | &ife->stats.collisions, |
486 | &ife->stats.tx_carrier_errors, |
487 | &ife->stats.tx_compressed /* missing for <= 1 */ |
488 | ); |
489 | |
490 | if (procnetdev_vsn <= 1) { |
491 | if (procnetdev_vsn == 0) { |
492 | ife->stats.rx_bytes = 0; |
493 | ife->stats.tx_bytes = 0; |
494 | } |
495 | ife->stats.rx_multicast = 0; |
496 | ife->stats.rx_compressed = 0; |
497 | ife->stats.tx_compressed = 0; |
498 | } |
499 | } |
500 | |
501 | static int procnetdev_version(char *buf) |
502 | { |
503 | if (strstr(buf, "compressed")) |
504 | return 2; |
505 | if (strstr(buf, "bytes")) |
506 | return 1; |
507 | return 0; |
508 | } |
509 | |
510 | static int if_readconf(void) |
511 | { |
512 | int numreqs = 30; |
513 | struct ifconf ifc; |
514 | struct ifreq *ifr; |
515 | int n, err = -1; |
516 | int skfd; |
517 | |
518 | ifc.ifc_buf = NULL; |
519 | |
520 | /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets |
521 | (as of 2.1.128) */ |
522 | skfd = socket(AF_INET, SOCK_DGRAM, 0); |
523 | if (skfd < 0) { |
524 | bb_perror_msg("error: no inet socket available"); |
525 | return -1; |
526 | } |
527 | |
528 | for (;;) { |
529 | ifc.ifc_len = sizeof(struct ifreq) * numreqs; |
530 | ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len); |
531 | |
532 | if (ioctl_or_warn(skfd, SIOCGIFCONF, &ifc) < 0) { |
533 | goto out; |
534 | } |
535 | if (ifc.ifc_len == (int)(sizeof(struct ifreq) * numreqs)) { |
536 | /* assume it overflowed and try again */ |
537 | numreqs += 10; |
538 | continue; |
539 | } |
540 | break; |
541 | } |
542 | |
543 | ifr = ifc.ifc_req; |
544 | for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) { |
545 | add_interface(ifr->ifr_name); |
546 | ifr++; |
547 | } |
548 | err = 0; |
549 | |
550 | out: |
551 | close(skfd); |
552 | free(ifc.ifc_buf); |
553 | return err; |
554 | } |
555 | |
556 | static int if_readlist_proc(char *target) |
557 | { |
558 | static smallint proc_read; |
559 | |
560 | FILE *fh; |
561 | char buf[512]; |
562 | struct interface *ife; |
563 | int err, procnetdev_vsn; |
564 | |
565 | if (proc_read) |
566 | return 0; |
567 | if (!target) |
568 | proc_read = 1; |
569 | |
570 | fh = fopen_or_warn(_PATH_PROCNET_DEV, "r"); |
571 | if (!fh) { |
572 | return if_readconf(); |
573 | } |
574 | fgets(buf, sizeof buf, fh); /* eat line */ |
575 | fgets(buf, sizeof buf, fh); |
576 | |
577 | procnetdev_vsn = procnetdev_version(buf); |
578 | |
579 | err = 0; |
580 | while (fgets(buf, sizeof buf, fh)) { |
581 | char *s, name[128]; |
582 | |
583 | s = get_name(name, buf); |
584 | ife = add_interface(name); |
585 | get_dev_fields(s, ife, procnetdev_vsn); |
586 | ife->statistics_valid = 1; |
587 | if (target && !strcmp(target, name)) |
588 | break; |
589 | } |
590 | if (ferror(fh)) { |
591 | bb_perror_msg(_PATH_PROCNET_DEV); |
592 | err = -1; |
593 | proc_read = 0; |
594 | } |
595 | fclose(fh); |
596 | return err; |
597 | } |
598 | |
599 | static int if_readlist(void) |
600 | { |
601 | int err = if_readlist_proc(NULL); |
602 | /* Needed in order to get ethN:M aliases */ |
603 | if (!err) |
604 | err = if_readconf(); |
605 | return err; |
606 | } |
607 | |
608 | /* Fetch the interface configuration from the kernel. */ |
609 | static int if_fetch(struct interface *ife) |
610 | { |
611 | struct ifreq ifr; |
612 | char *ifname = ife->name; |
613 | int skfd; |
614 | |
615 | skfd = xsocket(AF_INET, SOCK_DGRAM, 0); |
616 | |
617 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
618 | if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) { |
619 | close(skfd); |
620 | return -1; |
621 | } |
622 | ife->flags = ifr.ifr_flags; |
623 | |
624 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
625 | memset(ife->hwaddr, 0, 32); |
626 | if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0) |
627 | memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8); |
628 | |
629 | ife->type = ifr.ifr_hwaddr.sa_family; |
630 | |
631 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
632 | ife->metric = 0; |
633 | if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0) |
634 | ife->metric = ifr.ifr_metric; |
635 | |
636 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
637 | ife->mtu = 0; |
638 | if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0) |
639 | ife->mtu = ifr.ifr_mtu; |
640 | |
641 | memset(&ife->map, 0, sizeof(struct ifmap)); |
642 | #ifdef SIOCGIFMAP |
643 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
644 | if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0) |
645 | ife->map = ifr.ifr_map; |
646 | #endif |
647 | |
648 | #ifdef HAVE_TXQUEUELEN |
649 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
650 | ife->tx_queue_len = -1; /* unknown value */ |
651 | if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0) |
652 | ife->tx_queue_len = ifr.ifr_qlen; |
653 | #else |
654 | ife->tx_queue_len = -1; /* unknown value */ |
655 | #endif |
656 | |
657 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
658 | ifr.ifr_addr.sa_family = AF_INET; |
659 | memset(&ife->addr, 0, sizeof(struct sockaddr)); |
660 | if (ioctl(skfd, SIOCGIFADDR, &ifr) == 0) { |
661 | ife->has_ip = 1; |
662 | ife->addr = ifr.ifr_addr; |
663 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
664 | memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); |
665 | if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0) |
666 | ife->dstaddr = ifr.ifr_dstaddr; |
667 | |
668 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
669 | memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); |
670 | if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0) |
671 | ife->broadaddr = ifr.ifr_broadaddr; |
672 | |
673 | strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
674 | memset(&ife->netmask, 0, sizeof(struct sockaddr)); |
675 | if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0) |
676 | ife->netmask = ifr.ifr_netmask; |
677 | } |
678 | |
679 | close(skfd); |
680 | return 0; |
681 | } |
682 | |
683 | static int do_if_fetch(struct interface *ife) |
684 | { |
685 | if (if_fetch(ife) < 0) { |
686 | const char *errmsg; |
687 | |
688 | if (errno == ENODEV) { |
689 | /* Give better error message for this case. */ |
690 | errmsg = "Device not found"; |
691 | } else { |
692 | errmsg = strerror(errno); |
693 | } |
694 | bb_error_msg("%s: error fetching interface information: %s", |
695 | ife->name, errmsg); |
696 | return -1; |
697 | } |
698 | return 0; |
699 | } |
700 | |
701 | static const struct hwtype unspec_hwtype = { |
702 | .name = "unspec", |
703 | .title = "UNSPEC", |
704 | .type = -1, |
705 | .print = UNSPEC_print |
706 | }; |
707 | |
708 | static const struct hwtype loop_hwtype = { |
709 | .name = "loop", |
710 | .title = "Local Loopback", |
711 | .type = ARPHRD_LOOPBACK |
712 | }; |
713 | |
714 | #include <net/if_arp.h> |
715 | |
716 | #if (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined(_NEWLIB_VERSION) |
717 | #include <net/ethernet.h> |
718 | #else |
719 | #include <linux/if_ether.h> |
720 | #endif |
721 | |
722 | /* Display an Ethernet address in readable format. */ |
723 | static char* FAST_FUNC ether_print(unsigned char *ptr) |
724 | { |
725 | static char *buff; |
726 | |
727 | free(buff); |
728 | buff = xasprintf("%02X:%02X:%02X:%02X:%02X:%02X", |
729 | (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377), |
730 | (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377) |
731 | ); |
732 | return buff; |
733 | } |
734 | |
735 | static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap); |
736 | |
737 | static const struct hwtype ether_hwtype = { |
738 | .name = "ether", |
739 | .title = "Ethernet", |
740 | .type = ARPHRD_ETHER, |
741 | .alen = ETH_ALEN, |
742 | .print = ether_print, |
743 | .input = ether_input |
744 | }; |
745 | |
746 | static unsigned hexchar2int(char c) |
747 | { |
748 | if (isdigit(c)) |
749 | return c - '0'; |
750 | c &= ~0x20; /* a -> A */ |
751 | if ((unsigned)(c - 'A') <= 5) |
752 | return c - ('A' - 10); |
753 | return ~0U; |
754 | } |
755 | |
756 | /* Input an Ethernet address and convert to binary. */ |
757 | static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap) |
758 | { |
759 | unsigned char *ptr; |
760 | char c; |
761 | int i; |
762 | unsigned val; |
763 | |
764 | sap->sa_family = ether_hwtype.type; |
765 | ptr = (unsigned char*) sap->sa_data; |
766 | |
767 | i = 0; |
768 | while ((*bufp != '\0') && (i < ETH_ALEN)) { |
769 | val = hexchar2int(*bufp++) * 0x10; |
770 | if (val > 0xff) { |
771 | errno = EINVAL; |
772 | return -1; |
773 | } |
774 | c = *bufp; |
775 | if (c == ':' || c == 0) |
776 | val >>= 4; |
777 | else { |
778 | val |= hexchar2int(c); |
779 | if (val > 0xff) { |
780 | errno = EINVAL; |
781 | return -1; |
782 | } |
783 | } |
784 | if (c != 0) |
785 | bufp++; |
786 | *ptr++ = (unsigned char) val; |
787 | i++; |
788 | |
789 | /* We might get a semicolon here - not required. */ |
790 | if (*bufp == ':') { |
791 | bufp++; |
792 | } |
793 | } |
794 | return 0; |
795 | } |
796 | |
797 | #include <net/if_arp.h> |
798 | |
799 | static const struct hwtype ppp_hwtype = { |
800 | .name = "ppp", |
801 | .title = "Point-to-Point Protocol", |
802 | .type = ARPHRD_PPP |
803 | }; |
804 | |
805 | #if ENABLE_FEATURE_IPV6 |
806 | static const struct hwtype sit_hwtype = { |
807 | .name = "sit", |
808 | .title = "IPv6-in-IPv4", |
809 | .type = ARPHRD_SIT, |
810 | .print = UNSPEC_print, |
811 | .suppress_null_addr = 1 |
812 | }; |
813 | #endif |
814 | #if ENABLE_FEATURE_HWIB |
815 | static const struct hwtype ib_hwtype = { |
816 | .name = "infiniband", |
817 | .title = "InfiniBand", |
818 | .type = ARPHRD_INFINIBAND, |
819 | .alen = INFINIBAND_ALEN, |
820 | .print = UNSPEC_print, |
821 | .input = in_ib, |
822 | }; |
823 | #endif |
824 | |
825 | |
826 | static const struct hwtype *const hwtypes[] = { |
827 | &loop_hwtype, |
828 | ðer_hwtype, |
829 | &ppp_hwtype, |
830 | &unspec_hwtype, |
831 | #if ENABLE_FEATURE_IPV6 |
832 | &sit_hwtype, |
833 | #endif |
834 | #if ENABLE_FEATURE_HWIB |
835 | &ib_hwtype, |
836 | #endif |
837 | NULL |
838 | }; |
839 | |
840 | #ifdef IFF_PORTSEL |
841 | static const char *const if_port_text[] = { |
842 | /* Keep in step with <linux/netdevice.h> */ |
843 | "unknown", |
844 | "10base2", |
845 | "10baseT", |
846 | "AUI", |
847 | "100baseT", |
848 | "100baseTX", |
849 | "100baseFX", |
850 | NULL |
851 | }; |
852 | #endif |
853 | |
854 | /* Check our hardware type table for this type. */ |
855 | const struct hwtype* FAST_FUNC get_hwtype(const char *name) |
856 | { |
857 | const struct hwtype *const *hwp; |
858 | |
859 | hwp = hwtypes; |
860 | while (*hwp != NULL) { |
861 | if (!strcmp((*hwp)->name, name)) |
862 | return (*hwp); |
863 | hwp++; |
864 | } |
865 | return NULL; |
866 | } |
867 | |
868 | /* Check our hardware type table for this type. */ |
869 | const struct hwtype* FAST_FUNC get_hwntype(int type) |
870 | { |
871 | const struct hwtype *const *hwp; |
872 | |
873 | hwp = hwtypes; |
874 | while (*hwp != NULL) { |
875 | if ((*hwp)->type == type) |
876 | return *hwp; |
877 | hwp++; |
878 | } |
879 | return NULL; |
880 | } |
881 | |
882 | /* return 1 if address is all zeros */ |
883 | static int hw_null_address(const struct hwtype *hw, void *ap) |
884 | { |
885 | int i; |
886 | unsigned char *address = (unsigned char *) ap; |
887 | |
888 | for (i = 0; i < hw->alen; i++) |
889 | if (address[i]) |
890 | return 0; |
891 | return 1; |
892 | } |
893 | |
894 | static const char TRext[] ALIGN1 = "\0\0\0Ki\0Mi\0Gi\0Ti"; |
895 | |
896 | static void print_bytes_scaled(unsigned long long ull, const char *end) |
897 | { |
898 | unsigned long long int_part; |
899 | const char *ext; |
900 | unsigned int frac_part; |
901 | int i; |
902 | |
903 | frac_part = 0; |
904 | ext = TRext; |
905 | int_part = ull; |
906 | i = 4; |
907 | do { |
908 | if (int_part >= 1024) { |
909 | frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024; |
910 | int_part /= 1024; |
911 | ext += 3; /* KiB, MiB, GiB, TiB */ |
912 | } |
913 | --i; |
914 | } while (i); |
915 | |
916 | printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end); |
917 | } |
918 | |
919 | static void ife_print(struct interface *ptr) |
920 | { |
921 | const struct aftype *ap; |
922 | const struct hwtype *hw; |
923 | int hf; |
924 | int can_compress = 0; |
925 | |
926 | #ifdef HAVE_AFINET6 |
927 | FILE *f; |
928 | char addr6[40], devname[20]; |
929 | struct sockaddr_in6 sap; |
930 | int plen, scope, dad_status, if_idx; |
931 | char addr6p[8][5]; |
932 | #endif |
933 | |
934 | ap = get_afntype(ptr->addr.sa_family); |
935 | if (ap == NULL) |
936 | ap = get_afntype(0); |
937 | |
938 | hf = ptr->type; |
939 | |
940 | if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6) |
941 | can_compress = 1; |
942 | |
943 | hw = get_hwntype(hf); |
944 | if (hw == NULL) |
945 | hw = get_hwntype(-1); |
946 | |
947 | printf("%-9.9s Link encap:%s ", ptr->name, hw->title); |
948 | /* For some hardware types (eg Ash, ATM) we don't print the |
949 | hardware address if it's null. */ |
950 | if (hw->print != NULL && (!(hw_null_address(hw, ptr->hwaddr) && |
951 | hw->suppress_null_addr))) |
952 | printf("HWaddr %s ", hw->print((unsigned char *)ptr->hwaddr)); |
953 | #ifdef IFF_PORTSEL |
954 | if (ptr->flags & IFF_PORTSEL) { |
955 | printf("Media:%s", if_port_text[ptr->map.port] /* [0] */); |
956 | if (ptr->flags & IFF_AUTOMEDIA) |
957 | printf("(auto)"); |
958 | } |
959 | #endif |
960 | bb_putchar('\n'); |
961 | |
962 | if (ptr->has_ip) { |
963 | printf(" %s addr:%s ", ap->name, |
964 | ap->sprint(&ptr->addr, 1)); |
965 | if (ptr->flags & IFF_POINTOPOINT) { |
966 | printf(" P-t-P:%s ", ap->sprint(&ptr->dstaddr, 1)); |
967 | } |
968 | if (ptr->flags & IFF_BROADCAST) { |
969 | printf(" Bcast:%s ", ap->sprint(&ptr->broadaddr, 1)); |
970 | } |
971 | printf(" Mask:%s\n", ap->sprint(&ptr->netmask, 1)); |
972 | } |
973 | |
974 | #ifdef HAVE_AFINET6 |
975 | |
976 | #define IPV6_ADDR_ANY 0x0000U |
977 | |
978 | #define IPV6_ADDR_UNICAST 0x0001U |
979 | #define IPV6_ADDR_MULTICAST 0x0002U |
980 | #define IPV6_ADDR_ANYCAST 0x0004U |
981 | |
982 | #define IPV6_ADDR_LOOPBACK 0x0010U |
983 | #define IPV6_ADDR_LINKLOCAL 0x0020U |
984 | #define IPV6_ADDR_SITELOCAL 0x0040U |
985 | |
986 | #define IPV6_ADDR_COMPATv4 0x0080U |
987 | |
988 | #define IPV6_ADDR_SCOPE_MASK 0x00f0U |
989 | |
990 | #define IPV6_ADDR_MAPPED 0x1000U |
991 | #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ |
992 | |
993 | f = fopen_for_read(_PATH_PROCNET_IFINET6); |
994 | if (f != NULL) { |
995 | while (fscanf |
996 | (f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n", |
997 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], |
998 | addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, |
999 | &dad_status, devname) != EOF |
1000 | ) { |
1001 | if (!strcmp(devname, ptr->name)) { |
1002 | sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", |
1003 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
1004 | addr6p[4], addr6p[5], addr6p[6], addr6p[7]); |
1005 | inet_pton(AF_INET6, addr6, |
1006 | (struct sockaddr *) &sap.sin6_addr); |
1007 | sap.sin6_family = AF_INET6; |
1008 | printf(" inet6 addr: %s/%d", |
1009 | INET6_sprint((struct sockaddr *) &sap, 1), |
1010 | plen); |
1011 | printf(" Scope:"); |
1012 | switch (scope & IPV6_ADDR_SCOPE_MASK) { |
1013 | case 0: |
1014 | puts("Global"); |
1015 | break; |
1016 | case IPV6_ADDR_LINKLOCAL: |
1017 | puts("Link"); |
1018 | break; |
1019 | case IPV6_ADDR_SITELOCAL: |
1020 | puts("Site"); |
1021 | break; |
1022 | case IPV6_ADDR_COMPATv4: |
1023 | puts("Compat"); |
1024 | break; |
1025 | case IPV6_ADDR_LOOPBACK: |
1026 | puts("Host"); |
1027 | break; |
1028 | default: |
1029 | puts("Unknown"); |
1030 | } |
1031 | } |
1032 | } |
1033 | fclose(f); |
1034 | } |
1035 | #endif |
1036 | |
1037 | printf(" "); |
1038 | /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */ |
1039 | |
1040 | if (ptr->flags == 0) { |
1041 | printf("[NO FLAGS] "); |
1042 | } else { |
1043 | static const char ife_print_flags_strs[] ALIGN1 = |
1044 | "UP\0" |
1045 | "BROADCAST\0" |
1046 | "DEBUG\0" |
1047 | "LOOPBACK\0" |
1048 | "POINTOPOINT\0" |
1049 | "NOTRAILERS\0" |
1050 | "RUNNING\0" |
1051 | "NOARP\0" |
1052 | "PROMISC\0" |
1053 | "ALLMULTI\0" |
1054 | "SLAVE\0" |
1055 | "MASTER\0" |
1056 | "MULTICAST\0" |
1057 | #ifdef HAVE_DYNAMIC |
1058 | "DYNAMIC\0" |
1059 | #endif |
1060 | ; |
1061 | static const unsigned short ife_print_flags_mask[] ALIGN2 = { |
1062 | IFF_UP, |
1063 | IFF_BROADCAST, |
1064 | IFF_DEBUG, |
1065 | IFF_LOOPBACK, |
1066 | IFF_POINTOPOINT, |
1067 | IFF_NOTRAILERS, |
1068 | IFF_RUNNING, |
1069 | IFF_NOARP, |
1070 | IFF_PROMISC, |
1071 | IFF_ALLMULTI, |
1072 | IFF_SLAVE, |
1073 | IFF_MASTER, |
1074 | IFF_MULTICAST |
1075 | #ifdef HAVE_DYNAMIC |
1076 | ,IFF_DYNAMIC |
1077 | #endif |
1078 | }; |
1079 | const unsigned short *mask = ife_print_flags_mask; |
1080 | const char *str = ife_print_flags_strs; |
1081 | do { |
1082 | if (ptr->flags & *mask) { |
1083 | printf("%s ", str); |
1084 | } |
1085 | mask++; |
1086 | str += strlen(str) + 1; |
1087 | } while (*str); |
1088 | } |
1089 | |
1090 | /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */ |
1091 | printf(" MTU:%d Metric:%d", ptr->mtu, ptr->metric ? ptr->metric : 1); |
1092 | #ifdef SIOCSKEEPALIVE |
1093 | if (ptr->outfill || ptr->keepalive) |
1094 | printf(" Outfill:%d Keepalive:%d", ptr->outfill, ptr->keepalive); |
1095 | #endif |
1096 | bb_putchar('\n'); |
1097 | |
1098 | /* If needed, display the interface statistics. */ |
1099 | |
1100 | if (ptr->statistics_valid) { |
1101 | /* XXX: statistics are currently only printed for the primary address, |
1102 | * not for the aliases, although strictly speaking they're shared |
1103 | * by all addresses. |
1104 | */ |
1105 | printf(" "); |
1106 | |
1107 | printf("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n", |
1108 | ptr->stats.rx_packets, ptr->stats.rx_errors, |
1109 | ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors, |
1110 | ptr->stats.rx_frame_errors); |
1111 | if (can_compress) |
1112 | printf(" compressed:%lu\n", |
1113 | ptr->stats.rx_compressed); |
1114 | printf(" "); |
1115 | printf("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n", |
1116 | ptr->stats.tx_packets, ptr->stats.tx_errors, |
1117 | ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors, |
1118 | ptr->stats.tx_carrier_errors); |
1119 | printf(" collisions:%lu ", ptr->stats.collisions); |
1120 | if (can_compress) |
1121 | printf("compressed:%lu ", ptr->stats.tx_compressed); |
1122 | if (ptr->tx_queue_len != -1) |
1123 | printf("txqueuelen:%d ", ptr->tx_queue_len); |
1124 | printf("\n R"); |
1125 | print_bytes_scaled(ptr->stats.rx_bytes, " T"); |
1126 | print_bytes_scaled(ptr->stats.tx_bytes, "\n"); |
1127 | |
1128 | } |
1129 | |
1130 | if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma || |
1131 | ptr->map.base_addr)) { |
1132 | printf(" "); |
1133 | if (ptr->map.irq) |
1134 | printf("Interrupt:%d ", ptr->map.irq); |
1135 | if (ptr->map.base_addr >= 0x100) /* Only print devices using it for |
1136 | I/O maps */ |
1137 | printf("Base address:0x%lx ", |
1138 | (unsigned long) ptr->map.base_addr); |
1139 | if (ptr->map.mem_start) { |
1140 | printf("Memory:%lx-%lx ", ptr->map.mem_start, |
1141 | ptr->map.mem_end); |
1142 | } |
1143 | if (ptr->map.dma) |
1144 | printf("DMA chan:%x ", ptr->map.dma); |
1145 | bb_putchar('\n'); |
1146 | } |
1147 | bb_putchar('\n'); |
1148 | } |
1149 | |
1150 | |
1151 | static int do_if_print(struct interface *ife) /*, int *opt_a)*/ |
1152 | { |
1153 | int res; |
1154 | |
1155 | res = do_if_fetch(ife); |
1156 | if (res >= 0) { |
1157 | if ((ife->flags & IFF_UP) || interface_opt_a) |
1158 | ife_print(ife); |
1159 | } |
1160 | return res; |
1161 | } |
1162 | |
1163 | static struct interface *lookup_interface(char *name) |
1164 | { |
1165 | struct interface *ife = NULL; |
1166 | |
1167 | if (if_readlist_proc(name) < 0) |
1168 | return NULL; |
1169 | ife = add_interface(name); |
1170 | return ife; |
1171 | } |
1172 | |
1173 | #ifdef UNUSED |
1174 | static int for_all_interfaces(int (*doit) (struct interface *, void *), |
1175 | void *cookie) |
1176 | { |
1177 | struct interface *ife; |
1178 | |
1179 | if (!int_list && (if_readlist() < 0)) |
1180 | return -1; |
1181 | for (ife = int_list; ife; ife = ife->next) { |
1182 | int err = doit(ife, cookie); |
1183 | |
1184 | if (err) |
1185 | return err; |
1186 | } |
1187 | return 0; |
1188 | } |
1189 | #endif |
1190 | |
1191 | /* for ipv4 add/del modes */ |
1192 | static int if_print(char *ifname) |
1193 | { |
1194 | struct interface *ife; |
1195 | int res; |
1196 | |
1197 | if (!ifname) { |
1198 | /*res = for_all_interfaces(do_if_print, &interface_opt_a);*/ |
1199 | if (!int_list && (if_readlist() < 0)) |
1200 | return -1; |
1201 | for (ife = int_list; ife; ife = ife->next) { |
1202 | int err = do_if_print(ife); /*, &interface_opt_a);*/ |
1203 | if (err) |
1204 | return err; |
1205 | } |
1206 | return 0; |
1207 | } |
1208 | ife = lookup_interface(ifname); |
1209 | res = do_if_fetch(ife); |
1210 | if (res >= 0) |
1211 | ife_print(ife); |
1212 | return res; |
1213 | } |
1214 | |
1215 | #if ENABLE_FEATURE_HWIB |
1216 | /* Input an Infiniband address and convert to binary. */ |
1217 | int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) |
1218 | { |
1219 | unsigned char *ptr; |
1220 | char c; |
1221 | const char *orig; |
1222 | int i; |
1223 | unsigned val; |
1224 | |
1225 | sap->sa_family = ib_hwtype.type; |
1226 | ptr = (unsigned char *) sap->sa_data; |
1227 | |
1228 | i = 0; |
1229 | orig = bufp; |
1230 | while ((*bufp != '\0') && (i < INFINIBAND_ALEN)) { |
1231 | val = 0; |
1232 | c = *bufp++; |
1233 | if (isdigit(c)) |
1234 | val = c - '0'; |
1235 | else if (c >= 'a' && c <= 'f') |
1236 | val = c - 'a' + 10; |
1237 | else if (c >= 'A' && c <= 'F') |
1238 | val = c - 'A' + 10; |
1239 | else { |
1240 | errno = EINVAL; |
1241 | return -1; |
1242 | } |
1243 | val <<= 4; |
1244 | c = *bufp; |
1245 | if (isdigit(c)) |
1246 | val |= c - '0'; |
1247 | else if (c >= 'a' && c <= 'f') |
1248 | val |= c - 'a' + 10; |
1249 | else if (c >= 'A' && c <= 'F') |
1250 | val |= c - 'A' + 10; |
1251 | else if (c == ':' || c == 0) |
1252 | val >>= 4; |
1253 | else { |
1254 | errno = EINVAL; |
1255 | return -1; |
1256 | } |
1257 | if (c != 0) |
1258 | bufp++; |
1259 | *ptr++ = (unsigned char) (val & 0377); |
1260 | i++; |
1261 | |
1262 | /* We might get a semicolon here - not required. */ |
1263 | if (*bufp == ':') { |
1264 | bufp++; |
1265 | } |
1266 | } |
1267 | #ifdef DEBUG |
1268 | fprintf(stderr, "in_ib(%s): %s\n", orig, UNSPEC_print(sap->sa_data)); |
1269 | #endif |
1270 | return 0; |
1271 | } |
1272 | #endif |
1273 | |
1274 | |
1275 | int FAST_FUNC display_interfaces(char *ifname) |
1276 | { |
1277 | int status; |
1278 | |
1279 | status = if_print(ifname); |
1280 | |
1281 | return (status < 0); /* status < 0 == 1 -- error */ |
1282 | } |