blob: 9246132fde776c75fcb220d9958944dbda7d92ed
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 source tree. |
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 "libbb.h" |
35 | #include "inet_common.h" |
36 | #include <net/if.h> |
37 | #include <net/if_arp.h> |
38 | #ifdef HAVE_NET_ETHERNET_H |
39 | # include <net/ethernet.h> |
40 | #endif |
41 | |
42 | #if ENABLE_FEATURE_HWIB |
43 | /* #include <linux/if_infiniband.h> */ |
44 | # undef INFINIBAND_ALEN |
45 | # define INFINIBAND_ALEN 20 |
46 | #endif |
47 | |
48 | #if ENABLE_FEATURE_IPV6 |
49 | # define HAVE_AFINET6 1 |
50 | #else |
51 | # undef HAVE_AFINET6 |
52 | #endif |
53 | |
54 | #define _PATH_PROCNET_DEV "/proc/net/dev" |
55 | #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" |
56 | |
57 | #if defined(HAVE_AFINET6) && !defined(BIONIC_L) |
58 | # ifndef _LINUX_IN6_H |
59 | /* |
60 | * This is from linux/include/net/ipv6.h |
61 | */ |
62 | struct in6_ifreq { |
63 | struct in6_addr ifr6_addr; |
64 | uint32_t ifr6_prefixlen; |
65 | unsigned int ifr6_ifindex; |
66 | }; |
67 | # endif |
68 | #endif /* HAVE_AFINET6 */ |
69 | |
70 | /* Defines for glibc2.0 users. */ |
71 | #ifndef SIOCSIFTXQLEN |
72 | # define SIOCSIFTXQLEN 0x8943 |
73 | # define SIOCGIFTXQLEN 0x8942 |
74 | #endif |
75 | |
76 | /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */ |
77 | #ifndef ifr_qlen |
78 | # define ifr_qlen ifr_ifru.ifru_mtu |
79 | #endif |
80 | |
81 | #ifndef HAVE_TXQUEUELEN |
82 | # define HAVE_TXQUEUELEN 1 |
83 | #endif |
84 | |
85 | #ifndef IFF_DYNAMIC |
86 | # define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ |
87 | #endif |
88 | |
89 | /* Display an Internet socket address. */ |
90 | static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric) |
91 | { |
92 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
93 | return "[NONE SET]"; |
94 | return auto_string(INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00)); |
95 | } |
96 | |
97 | #ifdef UNUSED_AND_BUGGY |
98 | static int INET_getsock(char *bufp, struct sockaddr *sap) |
99 | { |
100 | char *sp = bufp, *bp; |
101 | unsigned int i; |
102 | unsigned val; |
103 | struct sockaddr_in *sock_in; |
104 | |
105 | sock_in = (struct sockaddr_in *) sap; |
106 | sock_in->sin_family = AF_INET; |
107 | sock_in->sin_port = 0; |
108 | |
109 | val = 0; |
110 | bp = (char *) &val; |
111 | for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) { |
112 | *sp = toupper(*sp); |
113 | |
114 | if ((unsigned)(*sp - 'A') <= 5) |
115 | bp[i] |= (int) (*sp - ('A' - 10)); |
116 | else if (isdigit(*sp)) |
117 | bp[i] |= (int) (*sp - '0'); |
118 | else |
119 | return -1; |
120 | |
121 | bp[i] <<= 4; |
122 | sp++; |
123 | *sp = toupper(*sp); |
124 | |
125 | if ((unsigned)(*sp - 'A') <= 5) |
126 | bp[i] |= (int) (*sp - ('A' - 10)); |
127 | else if (isdigit(*sp)) |
128 | bp[i] |= (int) (*sp - '0'); |
129 | else |
130 | return -1; |
131 | |
132 | sp++; |
133 | } |
134 | sock_in->sin_addr.s_addr = htonl(val); |
135 | |
136 | return (sp - bufp); |
137 | } |
138 | #endif |
139 | |
140 | static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap) |
141 | { |
142 | return INET_resolve(bufp, (struct sockaddr_in *) sap, 0); |
143 | /* |
144 | switch (type) { |
145 | case 1: |
146 | return (INET_getsock(bufp, sap)); |
147 | case 256: |
148 | return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1)); |
149 | default: |
150 | return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0)); |
151 | } |
152 | */ |
153 | } |
154 | |
155 | static const struct aftype inet_aftype = { |
156 | .name = "inet", |
157 | .title = "DARPA Internet", |
158 | .af = AF_INET, |
159 | .alen = 4, |
160 | .sprint = INET_sprint, |
161 | .input = INET_input, |
162 | }; |
163 | |
164 | #ifdef HAVE_AFINET6 |
165 | |
166 | /* Display an Internet socket address. */ |
167 | /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */ |
168 | static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric) |
169 | { |
170 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
171 | return "[NONE SET]"; |
172 | return auto_string(INET6_rresolve((struct sockaddr_in6 *) sap, numeric)); |
173 | } |
174 | |
175 | #ifdef UNUSED |
176 | static int INET6_getsock(char *bufp, struct sockaddr *sap) |
177 | { |
178 | struct sockaddr_in6 *sin6; |
179 | |
180 | sin6 = (struct sockaddr_in6 *) sap; |
181 | sin6->sin6_family = AF_INET6; |
182 | sin6->sin6_port = 0; |
183 | |
184 | if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0) |
185 | return -1; |
186 | |
187 | return 16; /* ?;) */ |
188 | } |
189 | #endif |
190 | |
191 | static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap) |
192 | { |
193 | return INET6_resolve(bufp, (struct sockaddr_in6 *) sap); |
194 | /* |
195 | switch (type) { |
196 | case 1: |
197 | return (INET6_getsock(bufp, sap)); |
198 | default: |
199 | return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap)); |
200 | } |
201 | */ |
202 | } |
203 | |
204 | static const struct aftype inet6_aftype = { |
205 | .name = "inet6", |
206 | .title = "IPv6", |
207 | .af = AF_INET6, |
208 | .alen = sizeof(struct in6_addr), |
209 | .sprint = INET6_sprint, |
210 | .input = INET6_input, |
211 | }; |
212 | |
213 | #endif /* HAVE_AFINET6 */ |
214 | |
215 | /* Display an UNSPEC address. */ |
216 | static char* FAST_FUNC UNSPEC_print(unsigned char *ptr) |
217 | { |
218 | char *buff; |
219 | char *pos; |
220 | unsigned int i; |
221 | |
222 | buff = auto_string(xmalloc(sizeof(struct sockaddr) * 3 + 1)); |
223 | pos = buff; |
224 | for (i = 0; i < sizeof(struct sockaddr); i++) { |
225 | /* careful -- not every libc's sprintf returns # bytes written */ |
226 | sprintf(pos, "%02X-", (*ptr++ & 0377)); |
227 | pos += 3; |
228 | } |
229 | /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */ |
230 | *--pos = '\0'; |
231 | return buff; |
232 | } |
233 | |
234 | /* Display an UNSPEC socket address. */ |
235 | static const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM) |
236 | { |
237 | if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
238 | return "[NONE SET]"; |
239 | return UNSPEC_print((unsigned char *)sap->sa_data); |
240 | } |
241 | |
242 | static const struct aftype unspec_aftype = { |
243 | .name = "unspec", |
244 | .title = "UNSPEC", |
245 | .af = AF_UNSPEC, |
246 | .alen = 0, |
247 | .print = UNSPEC_print, |
248 | .sprint = UNSPEC_sprint, |
249 | }; |
250 | |
251 | static const struct aftype *const aftypes[] = { |
252 | &inet_aftype, |
253 | #ifdef HAVE_AFINET6 |
254 | &inet6_aftype, |
255 | #endif |
256 | &unspec_aftype, |
257 | NULL |
258 | }; |
259 | |
260 | /* Check our protocol family table for this family. */ |
261 | const struct aftype* FAST_FUNC get_aftype(const char *name) |
262 | { |
263 | const struct aftype *const *afp; |
264 | |
265 | afp = aftypes; |
266 | while (*afp != NULL) { |
267 | if (strcmp((*afp)->name, name) == 0) |
268 | return (*afp); |
269 | afp++; |
270 | } |
271 | return NULL; |
272 | } |
273 | |
274 | /* Check our protocol family table for this family. */ |
275 | static const struct aftype *get_afntype(int af) |
276 | { |
277 | const struct aftype *const *afp; |
278 | |
279 | afp = aftypes; |
280 | while (*afp != NULL) { |
281 | if ((*afp)->af == af) |
282 | return *afp; |
283 | afp++; |
284 | } |
285 | return NULL; |
286 | } |
287 | |
288 | struct user_net_device_stats { |
289 | unsigned long long rx_packets; /* total packets received */ |
290 | unsigned long long tx_packets; /* total packets transmitted */ |
291 | unsigned long long rx_bytes; /* total bytes received */ |
292 | unsigned long long tx_bytes; /* total bytes transmitted */ |
293 | unsigned long rx_errors; /* bad packets received */ |
294 | unsigned long tx_errors; /* packet transmit problems */ |
295 | unsigned long rx_dropped; /* no space in linux buffers */ |
296 | unsigned long tx_dropped; /* no space available in linux */ |
297 | unsigned long rx_multicast; /* multicast packets received */ |
298 | unsigned long rx_compressed; |
299 | unsigned long tx_compressed; |
300 | unsigned long collisions; |
301 | |
302 | /* detailed rx_errors: */ |
303 | unsigned long rx_length_errors; |
304 | unsigned long rx_over_errors; /* receiver ring buff overflow */ |
305 | unsigned long rx_crc_errors; /* recved pkt with crc error */ |
306 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ |
307 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ |
308 | unsigned long rx_missed_errors; /* receiver missed packet */ |
309 | /* detailed tx_errors */ |
310 | unsigned long tx_aborted_errors; |
311 | unsigned long tx_carrier_errors; |
312 | unsigned long tx_fifo_errors; |
313 | unsigned long tx_heartbeat_errors; |
314 | unsigned long tx_window_errors; |
315 | }; |
316 | |
317 | struct interface { |
318 | struct interface *next, *prev; |
319 | char name[IFNAMSIZ]; /* interface name */ |
320 | short type; /* if type */ |
321 | short flags; /* various flags */ |
322 | int metric; /* routing metric */ |
323 | int mtu; /* MTU value */ |
324 | int tx_queue_len; /* transmit queue length */ |
325 | struct ifmap map; /* hardware setup */ |
326 | struct sockaddr addr; /* IP address */ |
327 | struct sockaddr dstaddr; /* P-P IP address */ |
328 | struct sockaddr broadaddr; /* IP broadcast address */ |
329 | struct sockaddr netmask; /* IP network mask */ |
330 | int has_ip; |
331 | char hwaddr[32]; /* HW address */ |
332 | int statistics_valid; |
333 | struct user_net_device_stats stats; /* statistics */ |
334 | int keepalive; /* keepalive value for SLIP */ |
335 | int outfill; /* outfill value for SLIP */ |
336 | }; |
337 | |
338 | |
339 | smallint interface_opt_a; /* show all interfaces */ |
340 | |
341 | static struct interface *int_list, *int_last; |
342 | |
343 | |
344 | #if 0 |
345 | /* like strcmp(), but knows about numbers */ |
346 | except that the freshly added calls to xatoul() brf on ethernet aliases with |
347 | uClibc with e.g.: ife->name='lo' name='eth0:1' |
348 | static int nstrcmp(const char *a, const char *b) |
349 | { |
350 | const char *a_ptr = a; |
351 | const char *b_ptr = b; |
352 | |
353 | while (*a == *b) { |
354 | if (*a == '\0') { |
355 | return 0; |
356 | } |
357 | if (!isdigit(*a) && isdigit(*(a+1))) { |
358 | a_ptr = a+1; |
359 | b_ptr = b+1; |
360 | } |
361 | a++; |
362 | b++; |
363 | } |
364 | |
365 | if (isdigit(*a) && isdigit(*b)) { |
366 | return xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1; |
367 | } |
368 | return *a - *b; |
369 | } |
370 | #endif |
371 | |
372 | static struct interface *add_interface(char *name) |
373 | { |
374 | struct interface *ife, **nextp, *new; |
375 | |
376 | for (ife = int_last; ife; ife = ife->prev) { |
377 | int n = /*n*/strcmp(ife->name, name); |
378 | |
379 | if (n == 0) |
380 | return ife; |
381 | if (n < 0) |
382 | break; |
383 | } |
384 | |
385 | new = xzalloc(sizeof(*new)); |
386 | strncpy_IFNAMSIZ(new->name, name); |
387 | nextp = ife ? &ife->next : &int_list; |
388 | new->prev = ife; |
389 | new->next = *nextp; |
390 | if (new->next) |
391 | new->next->prev = new; |
392 | else |
393 | int_last = new; |
394 | *nextp = new; |
395 | return new; |
396 | } |
397 | |
398 | static char *get_name(char *name, char *p) |
399 | { |
400 | /* Extract <name> from nul-terminated p where p matches |
401 | * <name>: after leading whitespace. |
402 | * If match is not made, set name empty and return unchanged p |
403 | */ |
404 | char *nameend; |
405 | char *namestart = skip_whitespace(p); |
406 | |
407 | nameend = namestart; |
408 | while (*nameend && *nameend != ':' && !isspace(*nameend)) |
409 | nameend++; |
410 | if (*nameend == ':') { |
411 | if ((nameend - namestart) < IFNAMSIZ) { |
412 | memcpy(name, namestart, nameend - namestart); |
413 | name[nameend - namestart] = '\0'; |
414 | p = nameend; |
415 | } else { |
416 | /* Interface name too large */ |
417 | name[0] = '\0'; |
418 | } |
419 | } else { |
420 | /* trailing ':' not found - return empty */ |
421 | name[0] = '\0'; |
422 | } |
423 | return p + 1; |
424 | } |
425 | |
426 | /* If scanf supports size qualifiers for %n conversions, then we can |
427 | * use a modified fmt that simply stores the position in the fields |
428 | * having no associated fields in the proc string. Of course, we need |
429 | * to zero them again when we're done. But that is smaller than the |
430 | * old approach of multiple scanf occurrences with large numbers of |
431 | * args. */ |
432 | |
433 | /* static const char *const ss_fmt[] = { */ |
434 | /* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */ |
435 | /* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */ |
436 | /* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */ |
437 | /* }; */ |
438 | |
439 | /* Lie about the size of the int pointed to for %n. */ |
440 | #if INT_MAX == LONG_MAX |
441 | static const char *const ss_fmt[] = { |
442 | "%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u", |
443 | "%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u", |
444 | "%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u" |
445 | }; |
446 | #else |
447 | static const char *const ss_fmt[] = { |
448 | "%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu", |
449 | "%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu", |
450 | "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" |
451 | }; |
452 | |
453 | #endif |
454 | |
455 | static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn) |
456 | { |
457 | memset(&ife->stats, 0, sizeof(struct user_net_device_stats)); |
458 | |
459 | sscanf(bp, ss_fmt[procnetdev_vsn], |
460 | &ife->stats.rx_bytes, /* missing for 0 */ |
461 | &ife->stats.rx_packets, |
462 | &ife->stats.rx_errors, |
463 | &ife->stats.rx_dropped, |
464 | &ife->stats.rx_fifo_errors, |
465 | &ife->stats.rx_frame_errors, |
466 | &ife->stats.rx_compressed, /* missing for <= 1 */ |
467 | &ife->stats.rx_multicast, /* missing for <= 1 */ |
468 | &ife->stats.tx_bytes, /* missing for 0 */ |
469 | &ife->stats.tx_packets, |
470 | &ife->stats.tx_errors, |
471 | &ife->stats.tx_dropped, |
472 | &ife->stats.tx_fifo_errors, |
473 | &ife->stats.collisions, |
474 | &ife->stats.tx_carrier_errors, |
475 | &ife->stats.tx_compressed /* missing for <= 1 */ |
476 | ); |
477 | |
478 | if (procnetdev_vsn <= 1) { |
479 | if (procnetdev_vsn == 0) { |
480 | ife->stats.rx_bytes = 0; |
481 | ife->stats.tx_bytes = 0; |
482 | } |
483 | ife->stats.rx_multicast = 0; |
484 | ife->stats.rx_compressed = 0; |
485 | ife->stats.tx_compressed = 0; |
486 | } |
487 | } |
488 | |
489 | static int procnetdev_version(char *buf) |
490 | { |
491 | if (strstr(buf, "compressed")) |
492 | return 2; |
493 | if (strstr(buf, "bytes")) |
494 | return 1; |
495 | return 0; |
496 | } |
497 | |
498 | static int if_readconf(void) |
499 | { |
500 | int numreqs = 30; |
501 | struct ifconf ifc; |
502 | struct ifreq *ifr; |
503 | int n, err = -1; |
504 | int skfd; |
505 | |
506 | ifc.ifc_buf = NULL; |
507 | |
508 | /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets |
509 | (as of 2.1.128) */ |
510 | skfd = socket(AF_INET, SOCK_DGRAM, 0); |
511 | if (skfd < 0) { |
512 | bb_perror_msg("error: no inet socket available"); |
513 | return -1; |
514 | } |
515 | |
516 | for (;;) { |
517 | ifc.ifc_len = sizeof(struct ifreq) * numreqs; |
518 | ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len); |
519 | |
520 | if (ioctl_or_warn(skfd, SIOCGIFCONF, &ifc) < 0) { |
521 | goto out; |
522 | } |
523 | if (ifc.ifc_len == (int)(sizeof(struct ifreq) * numreqs)) { |
524 | /* assume it overflowed and try again */ |
525 | numreqs += 10; |
526 | continue; |
527 | } |
528 | break; |
529 | } |
530 | |
531 | ifr = ifc.ifc_req; |
532 | for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) { |
533 | add_interface(ifr->ifr_name); |
534 | ifr++; |
535 | } |
536 | err = 0; |
537 | |
538 | out: |
539 | close(skfd); |
540 | free(ifc.ifc_buf); |
541 | return err; |
542 | } |
543 | |
544 | static int if_readlist_proc(char *target) |
545 | { |
546 | static smallint proc_read; |
547 | |
548 | FILE *fh; |
549 | char buf[512]; |
550 | struct interface *ife; |
551 | int err, procnetdev_vsn; |
552 | |
553 | if (proc_read) |
554 | return 0; |
555 | if (!target) |
556 | proc_read = 1; |
557 | |
558 | fh = fopen_or_warn(_PATH_PROCNET_DEV, "r"); |
559 | if (!fh) { |
560 | return if_readconf(); |
561 | } |
562 | fgets(buf, sizeof buf, fh); /* eat line */ |
563 | fgets(buf, sizeof buf, fh); |
564 | |
565 | procnetdev_vsn = procnetdev_version(buf); |
566 | |
567 | err = 0; |
568 | while (fgets(buf, sizeof buf, fh)) { |
569 | char *s, name[128]; |
570 | |
571 | s = get_name(name, buf); |
572 | ife = add_interface(name); |
573 | get_dev_fields(s, ife, procnetdev_vsn); |
574 | ife->statistics_valid = 1; |
575 | if (target && strcmp(target, name) == 0) |
576 | break; |
577 | } |
578 | if (ferror(fh)) { |
579 | bb_perror_msg(_PATH_PROCNET_DEV); |
580 | err = -1; |
581 | proc_read = 0; |
582 | } |
583 | fclose(fh); |
584 | return err; |
585 | } |
586 | |
587 | static int if_readlist(void) |
588 | { |
589 | int err = if_readlist_proc(NULL); |
590 | /* Needed in order to get ethN:M aliases */ |
591 | if (!err) |
592 | err = if_readconf(); |
593 | return err; |
594 | } |
595 | |
596 | /* Fetch the interface configuration from the kernel. */ |
597 | static int if_fetch(struct interface *ife) |
598 | { |
599 | struct ifreq ifr; |
600 | char *ifname = ife->name; |
601 | int skfd; |
602 | |
603 | skfd = xsocket(AF_INET, SOCK_DGRAM, 0); |
604 | |
605 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
606 | if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) { |
607 | close(skfd); |
608 | return -1; |
609 | } |
610 | ife->flags = ifr.ifr_flags; |
611 | |
612 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
613 | memset(ife->hwaddr, 0, 32); |
614 | if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0) |
615 | memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8); |
616 | |
617 | ife->type = ifr.ifr_hwaddr.sa_family; |
618 | |
619 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
620 | ife->metric = 0; |
621 | if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0) |
622 | ife->metric = ifr.ifr_metric; |
623 | |
624 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
625 | ife->mtu = 0; |
626 | if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0) |
627 | ife->mtu = ifr.ifr_mtu; |
628 | |
629 | memset(&ife->map, 0, sizeof(struct ifmap)); |
630 | #ifdef SIOCGIFMAP |
631 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
632 | if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0) |
633 | ife->map = ifr.ifr_map; |
634 | #endif |
635 | |
636 | #ifdef HAVE_TXQUEUELEN |
637 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
638 | ife->tx_queue_len = -1; /* unknown value */ |
639 | if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0) |
640 | ife->tx_queue_len = ifr.ifr_qlen; |
641 | #else |
642 | ife->tx_queue_len = -1; /* unknown value */ |
643 | #endif |
644 | |
645 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
646 | ifr.ifr_addr.sa_family = AF_INET; |
647 | memset(&ife->addr, 0, sizeof(struct sockaddr)); |
648 | if (ioctl(skfd, SIOCGIFADDR, &ifr) == 0) { |
649 | ife->has_ip = 1; |
650 | ife->addr = ifr.ifr_addr; |
651 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
652 | memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); |
653 | if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0) |
654 | ife->dstaddr = ifr.ifr_dstaddr; |
655 | |
656 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
657 | memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); |
658 | if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0) |
659 | ife->broadaddr = ifr.ifr_broadaddr; |
660 | |
661 | strncpy_IFNAMSIZ(ifr.ifr_name, ifname); |
662 | memset(&ife->netmask, 0, sizeof(struct sockaddr)); |
663 | if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0) |
664 | ife->netmask = ifr.ifr_netmask; |
665 | } |
666 | |
667 | close(skfd); |
668 | return 0; |
669 | } |
670 | |
671 | static int do_if_fetch(struct interface *ife) |
672 | { |
673 | if (if_fetch(ife) < 0) { |
674 | const char *errmsg; |
675 | |
676 | if (errno == ENODEV) { |
677 | /* Give better error message for this case. */ |
678 | errmsg = "Device not found"; |
679 | } else { |
680 | errmsg = strerror(errno); |
681 | } |
682 | bb_error_msg("%s: error fetching interface information: %s", |
683 | ife->name, errmsg); |
684 | return -1; |
685 | } |
686 | return 0; |
687 | } |
688 | |
689 | static const struct hwtype unspec_hwtype = { |
690 | .name = "unspec", |
691 | .title = "UNSPEC", |
692 | .type = -1, |
693 | .print = UNSPEC_print |
694 | }; |
695 | |
696 | static const struct hwtype loop_hwtype = { |
697 | .name = "loop", |
698 | .title = "Local Loopback", |
699 | .type = ARPHRD_LOOPBACK |
700 | }; |
701 | |
702 | /* Display an Ethernet address in readable format. */ |
703 | static char* FAST_FUNC ether_print(unsigned char *ptr) |
704 | { |
705 | char *buff; |
706 | buff = xasprintf("%02X:%02X:%02X:%02X:%02X:%02X", |
707 | (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377), |
708 | (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377) |
709 | ); |
710 | return auto_string(buff); |
711 | } |
712 | |
713 | static const struct hwtype ether_hwtype = { |
714 | .name = "ether", |
715 | .title = "Ethernet", |
716 | .type = ARPHRD_ETHER, |
717 | .alen = ETH_ALEN, |
718 | .print = ether_print, |
719 | .input = in_ether |
720 | }; |
721 | |
722 | static const struct hwtype ppp_hwtype = { |
723 | .name = "ppp", |
724 | .title = "Point-to-Point Protocol", |
725 | .type = ARPHRD_PPP |
726 | }; |
727 | |
728 | #if ENABLE_FEATURE_IPV6 |
729 | static const struct hwtype sit_hwtype = { |
730 | .name = "sit", |
731 | .title = "IPv6-in-IPv4", |
732 | .type = ARPHRD_SIT, |
733 | .print = UNSPEC_print, |
734 | .suppress_null_addr = 1 |
735 | }; |
736 | #endif |
737 | #if ENABLE_FEATURE_HWIB |
738 | static const struct hwtype ib_hwtype = { |
739 | .name = "infiniband", |
740 | .title = "InfiniBand", |
741 | .type = ARPHRD_INFINIBAND, |
742 | .alen = INFINIBAND_ALEN, |
743 | .print = UNSPEC_print, |
744 | .input = in_ib, |
745 | }; |
746 | #endif |
747 | |
748 | |
749 | static const struct hwtype *const hwtypes[] = { |
750 | &loop_hwtype, |
751 | ðer_hwtype, |
752 | &ppp_hwtype, |
753 | &unspec_hwtype, |
754 | #if ENABLE_FEATURE_IPV6 |
755 | &sit_hwtype, |
756 | #endif |
757 | #if ENABLE_FEATURE_HWIB |
758 | &ib_hwtype, |
759 | #endif |
760 | NULL |
761 | }; |
762 | |
763 | #ifdef IFF_PORTSEL |
764 | static const char *const if_port_text[] = { |
765 | /* Keep in step with <linux/netdevice.h> */ |
766 | "unknown", |
767 | "10base2", |
768 | "10baseT", |
769 | "AUI", |
770 | "100baseT", |
771 | "100baseTX", |
772 | "100baseFX", |
773 | NULL |
774 | }; |
775 | #endif |
776 | |
777 | /* Check our hardware type table for this type. */ |
778 | const struct hwtype* FAST_FUNC get_hwtype(const char *name) |
779 | { |
780 | const struct hwtype *const *hwp; |
781 | |
782 | hwp = hwtypes; |
783 | while (*hwp != NULL) { |
784 | if (strcmp((*hwp)->name, name) == 0) |
785 | return (*hwp); |
786 | hwp++; |
787 | } |
788 | return NULL; |
789 | } |
790 | |
791 | /* Check our hardware type table for this type. */ |
792 | const struct hwtype* FAST_FUNC get_hwntype(int type) |
793 | { |
794 | const struct hwtype *const *hwp; |
795 | |
796 | hwp = hwtypes; |
797 | while (*hwp != NULL) { |
798 | if ((*hwp)->type == type) |
799 | return *hwp; |
800 | hwp++; |
801 | } |
802 | return NULL; |
803 | } |
804 | |
805 | /* return 1 if address is all zeros */ |
806 | static int hw_null_address(const struct hwtype *hw, void *ap) |
807 | { |
808 | int i; |
809 | unsigned char *address = (unsigned char *) ap; |
810 | |
811 | for (i = 0; i < hw->alen; i++) |
812 | if (address[i]) |
813 | return 0; |
814 | return 1; |
815 | } |
816 | |
817 | static const char TRext[] ALIGN1 = "\0\0\0Ki\0Mi\0Gi\0Ti"; |
818 | |
819 | static void print_bytes_scaled(unsigned long long ull, const char *end) |
820 | { |
821 | unsigned long long int_part; |
822 | const char *ext; |
823 | unsigned int frac_part; |
824 | int i; |
825 | |
826 | frac_part = 0; |
827 | ext = TRext; |
828 | int_part = ull; |
829 | i = 4; |
830 | do { |
831 | if (int_part >= 1024) { |
832 | frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024; |
833 | int_part /= 1024; |
834 | ext += 3; /* KiB, MiB, GiB, TiB */ |
835 | } |
836 | --i; |
837 | } while (i); |
838 | |
839 | printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end); |
840 | } |
841 | |
842 | |
843 | #ifdef HAVE_AFINET6 |
844 | #define IPV6_ADDR_ANY 0x0000U |
845 | |
846 | #define IPV6_ADDR_UNICAST 0x0001U |
847 | #define IPV6_ADDR_MULTICAST 0x0002U |
848 | #define IPV6_ADDR_ANYCAST 0x0004U |
849 | |
850 | #define IPV6_ADDR_LOOPBACK 0x0010U |
851 | #define IPV6_ADDR_LINKLOCAL 0x0020U |
852 | #define IPV6_ADDR_SITELOCAL 0x0040U |
853 | |
854 | #define IPV6_ADDR_COMPATv4 0x0080U |
855 | |
856 | #define IPV6_ADDR_SCOPE_MASK 0x00f0U |
857 | |
858 | #define IPV6_ADDR_MAPPED 0x1000U |
859 | #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ |
860 | |
861 | |
862 | static void ife_print6(struct interface *ptr) |
863 | { |
864 | FILE *f; |
865 | char addr6[40], devname[21]; |
866 | struct sockaddr_in6 sap; |
867 | int plen, scope, dad_status, if_idx; |
868 | char addr6p[8][5]; |
869 | |
870 | f = fopen_for_read(_PATH_PROCNET_IFINET6); |
871 | if (f == NULL) |
872 | return; |
873 | |
874 | while (fscanf |
875 | (f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n", |
876 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], |
877 | addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, |
878 | &dad_status, devname) != EOF |
879 | ) { |
880 | if (strcmp(devname, ptr->name) == 0) { |
881 | sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", |
882 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
883 | addr6p[4], addr6p[5], addr6p[6], addr6p[7]); |
884 | memset(&sap, 0, sizeof(sap)); |
885 | inet_pton(AF_INET6, addr6, |
886 | (struct sockaddr *) &sap.sin6_addr); |
887 | sap.sin6_family = AF_INET6; |
888 | printf(" inet6 addr: %s/%d", |
889 | INET6_sprint((struct sockaddr *) &sap, 1), |
890 | plen); |
891 | printf(" Scope:"); |
892 | switch (scope & IPV6_ADDR_SCOPE_MASK) { |
893 | case 0: |
894 | puts("Global"); |
895 | break; |
896 | case IPV6_ADDR_LINKLOCAL: |
897 | puts("Link"); |
898 | break; |
899 | case IPV6_ADDR_SITELOCAL: |
900 | puts("Site"); |
901 | break; |
902 | case IPV6_ADDR_COMPATv4: |
903 | puts("Compat"); |
904 | break; |
905 | case IPV6_ADDR_LOOPBACK: |
906 | puts("Host"); |
907 | break; |
908 | default: |
909 | puts("Unknown"); |
910 | } |
911 | } |
912 | } |
913 | fclose(f); |
914 | } |
915 | #else |
916 | #define ife_print6(a) ((void)0) |
917 | #endif |
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 | ap = get_afntype(ptr->addr.sa_family); |
927 | if (ap == NULL) |
928 | ap = get_afntype(0); |
929 | |
930 | hf = ptr->type; |
931 | |
932 | if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6) |
933 | can_compress = 1; |
934 | |
935 | hw = get_hwntype(hf); |
936 | if (hw == NULL) |
937 | hw = get_hwntype(-1); |
938 | |
939 | printf("%-9s Link encap:%s ", ptr->name, hw->title); |
940 | /* For some hardware types (eg Ash, ATM) we don't print the |
941 | hardware address if it's null. */ |
942 | if (hw->print != NULL |
943 | && !(hw_null_address(hw, ptr->hwaddr) && hw->suppress_null_addr) |
944 | ) { |
945 | printf("HWaddr %s ", hw->print((unsigned char *)ptr->hwaddr)); |
946 | } |
947 | #ifdef IFF_PORTSEL |
948 | if (ptr->flags & IFF_PORTSEL) { |
949 | printf("Media:%s", if_port_text[ptr->map.port] /* [0] */); |
950 | if (ptr->flags & IFF_AUTOMEDIA) |
951 | printf("(auto)"); |
952 | } |
953 | #endif |
954 | bb_putchar('\n'); |
955 | |
956 | if (ptr->has_ip) { |
957 | printf(" %s addr:%s ", ap->name, |
958 | ap->sprint(&ptr->addr, 1)); |
959 | if (ptr->flags & IFF_POINTOPOINT) { |
960 | printf(" P-t-P:%s ", ap->sprint(&ptr->dstaddr, 1)); |
961 | } |
962 | if (ptr->flags & IFF_BROADCAST) { |
963 | printf(" Bcast:%s ", ap->sprint(&ptr->broadaddr, 1)); |
964 | } |
965 | printf(" Mask:%s\n", ap->sprint(&ptr->netmask, 1)); |
966 | } |
967 | |
968 | ife_print6(ptr); |
969 | |
970 | printf(" "); |
971 | /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */ |
972 | |
973 | if (ptr->flags == 0) { |
974 | printf("[NO FLAGS] "); |
975 | } else { |
976 | static const char ife_print_flags_strs[] ALIGN1 = |
977 | "UP\0" |
978 | "BROADCAST\0" |
979 | "DEBUG\0" |
980 | "LOOPBACK\0" |
981 | "POINTOPOINT\0" |
982 | "NOTRAILERS\0" |
983 | "RUNNING\0" |
984 | "NOARP\0" |
985 | "PROMISC\0" |
986 | "ALLMULTI\0" |
987 | "SLAVE\0" |
988 | "MASTER\0" |
989 | "MULTICAST\0" |
990 | #ifdef HAVE_DYNAMIC |
991 | "DYNAMIC\0" |
992 | #endif |
993 | ; |
994 | static const unsigned short ife_print_flags_mask[] ALIGN2 = { |
995 | IFF_UP, |
996 | IFF_BROADCAST, |
997 | IFF_DEBUG, |
998 | IFF_LOOPBACK, |
999 | IFF_POINTOPOINT, |
1000 | IFF_NOTRAILERS, |
1001 | IFF_RUNNING, |
1002 | IFF_NOARP, |
1003 | IFF_PROMISC, |
1004 | IFF_ALLMULTI, |
1005 | IFF_SLAVE, |
1006 | IFF_MASTER, |
1007 | IFF_MULTICAST |
1008 | #ifdef HAVE_DYNAMIC |
1009 | ,IFF_DYNAMIC |
1010 | #endif |
1011 | }; |
1012 | const unsigned short *mask = ife_print_flags_mask; |
1013 | const char *str = ife_print_flags_strs; |
1014 | do { |
1015 | if (ptr->flags & *mask) { |
1016 | printf("%s ", str); |
1017 | } |
1018 | mask++; |
1019 | str += strlen(str) + 1; |
1020 | } while (*str); |
1021 | } |
1022 | |
1023 | /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */ |
1024 | printf(" MTU:%d Metric:%d", ptr->mtu, ptr->metric ? ptr->metric : 1); |
1025 | #ifdef SIOCSKEEPALIVE |
1026 | if (ptr->outfill || ptr->keepalive) |
1027 | printf(" Outfill:%d Keepalive:%d", ptr->outfill, ptr->keepalive); |
1028 | #endif |
1029 | bb_putchar('\n'); |
1030 | |
1031 | /* If needed, display the interface statistics. */ |
1032 | |
1033 | if (ptr->statistics_valid) { |
1034 | /* XXX: statistics are currently only printed for the primary address, |
1035 | * not for the aliases, although strictly speaking they're shared |
1036 | * by all addresses. |
1037 | */ |
1038 | printf(" "); |
1039 | |
1040 | printf("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n", |
1041 | ptr->stats.rx_packets, ptr->stats.rx_errors, |
1042 | ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors, |
1043 | ptr->stats.rx_frame_errors); |
1044 | if (can_compress) |
1045 | printf(" compressed:%lu\n", |
1046 | ptr->stats.rx_compressed); |
1047 | printf(" "); |
1048 | printf("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n", |
1049 | ptr->stats.tx_packets, ptr->stats.tx_errors, |
1050 | ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors, |
1051 | ptr->stats.tx_carrier_errors); |
1052 | printf(" collisions:%lu ", ptr->stats.collisions); |
1053 | if (can_compress) |
1054 | printf("compressed:%lu ", ptr->stats.tx_compressed); |
1055 | if (ptr->tx_queue_len != -1) |
1056 | printf("txqueuelen:%d ", ptr->tx_queue_len); |
1057 | printf("\n R"); |
1058 | print_bytes_scaled(ptr->stats.rx_bytes, " T"); |
1059 | print_bytes_scaled(ptr->stats.tx_bytes, "\n"); |
1060 | } |
1061 | |
1062 | if (ptr->map.irq || ptr->map.mem_start |
1063 | || ptr->map.dma || ptr->map.base_addr |
1064 | ) { |
1065 | printf(" "); |
1066 | if (ptr->map.irq) |
1067 | printf("Interrupt:%d ", ptr->map.irq); |
1068 | if (ptr->map.base_addr >= 0x100) /* Only print devices using it for I/O maps */ |
1069 | printf("Base address:0x%lx ", |
1070 | (unsigned long) ptr->map.base_addr); |
1071 | if (ptr->map.mem_start) { |
1072 | printf("Memory:%lx-%lx ", ptr->map.mem_start, |
1073 | ptr->map.mem_end); |
1074 | } |
1075 | if (ptr->map.dma) |
1076 | printf("DMA chan:%x ", ptr->map.dma); |
1077 | bb_putchar('\n'); |
1078 | } |
1079 | bb_putchar('\n'); |
1080 | } |
1081 | |
1082 | static int do_if_print(struct interface *ife) /*, int *opt_a)*/ |
1083 | { |
1084 | int res; |
1085 | |
1086 | res = do_if_fetch(ife); |
1087 | if (res >= 0) { |
1088 | if ((ife->flags & IFF_UP) || interface_opt_a) |
1089 | ife_print(ife); |
1090 | } |
1091 | return res; |
1092 | } |
1093 | |
1094 | static struct interface *lookup_interface(char *name) |
1095 | { |
1096 | struct interface *ife = NULL; |
1097 | |
1098 | if (if_readlist_proc(name) < 0) |
1099 | return NULL; |
1100 | ife = add_interface(name); |
1101 | return ife; |
1102 | } |
1103 | |
1104 | #ifdef UNUSED |
1105 | static int for_all_interfaces(int (*doit) (struct interface *, void *), |
1106 | void *cookie) |
1107 | { |
1108 | struct interface *ife; |
1109 | |
1110 | if (!int_list && (if_readlist() < 0)) |
1111 | return -1; |
1112 | for (ife = int_list; ife; ife = ife->next) { |
1113 | int err = doit(ife, cookie); |
1114 | if (err) |
1115 | return err; |
1116 | } |
1117 | return 0; |
1118 | } |
1119 | #endif |
1120 | |
1121 | /* for ipv4 add/del modes */ |
1122 | static int if_print(char *ifname) |
1123 | { |
1124 | struct interface *ife; |
1125 | int res; |
1126 | |
1127 | if (!ifname) { |
1128 | /*res = for_all_interfaces(do_if_print, &interface_opt_a);*/ |
1129 | if (!int_list && (if_readlist() < 0)) |
1130 | return -1; |
1131 | for (ife = int_list; ife; ife = ife->next) { |
1132 | int err = do_if_print(ife); /*, &interface_opt_a);*/ |
1133 | if (err) |
1134 | return err; |
1135 | } |
1136 | return 0; |
1137 | } |
1138 | ife = lookup_interface(ifname); |
1139 | res = do_if_fetch(ife); |
1140 | if (res >= 0) |
1141 | ife_print(ife); |
1142 | return res; |
1143 | } |
1144 | |
1145 | #if ENABLE_FEATURE_HWIB |
1146 | /* Input an Infiniband address and convert to binary. */ |
1147 | int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) |
1148 | { |
1149 | sap->sa_family = ib_hwtype.type; |
1150 | //TODO: error check? |
1151 | hex2bin((char*)sap->sa_data, bufp, INFINIBAND_ALEN); |
1152 | # ifdef HWIB_DEBUG |
1153 | fprintf(stderr, "in_ib(%s): %s\n", bufp, UNSPEC_print(sap->sa_data)); |
1154 | # endif |
1155 | return 0; |
1156 | } |
1157 | #endif |
1158 | |
1159 | int FAST_FUNC display_interfaces(char *ifname) |
1160 | { |
1161 | int status; |
1162 | |
1163 | status = if_print(ifname); |
1164 | |
1165 | return (status < 0); /* status < 0 == 1 -- error */ |
1166 | } |
1167 |