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Changes for kernel and Busybox
[tomato.git] / release / src / router / busybox / networking / interface.c
blob4a319bfb3b5c732318eab63235cdc7230137e2d2
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 #ifdef HAVE_AFINET6
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 static char *buff; /* defaults to NULL */
93
94 free(buff);
95 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
96 return "[NONE SET]";
97 buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00);
98 return buff;
99 }
100
101 #ifdef UNUSED_AND_BUGGY
102 static int INET_getsock(char *bufp, struct sockaddr *sap)
103 {
104 char *sp = bufp, *bp;
105 unsigned int i;
106 unsigned val;
107 struct sockaddr_in *sock_in;
108
109 sock_in = (struct sockaddr_in *) sap;
110 sock_in->sin_family = AF_INET;
111 sock_in->sin_port = 0;
112
113 val = 0;
114 bp = (char *) &val;
115 for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) {
116 *sp = toupper(*sp);
117
118 if ((unsigned)(*sp - 'A') <= 5)
119 bp[i] |= (int) (*sp - ('A' - 10));
120 else if (isdigit(*sp))
121 bp[i] |= (int) (*sp - '0');
122 else
123 return -1;
124
125 bp[i] <<= 4;
126 sp++;
127 *sp = toupper(*sp);
128
129 if ((unsigned)(*sp - 'A') <= 5)
130 bp[i] |= (int) (*sp - ('A' - 10));
131 else if (isdigit(*sp))
132 bp[i] |= (int) (*sp - '0');
133 else
134 return -1;
135
136 sp++;
137 }
138 sock_in->sin_addr.s_addr = htonl(val);
139
140 return (sp - bufp);
141 }
142 #endif
143
144 static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap)
145 {
146 return INET_resolve(bufp, (struct sockaddr_in *) sap, 0);
147 /*
148 switch (type) {
149 case 1:
150 return (INET_getsock(bufp, sap));
151 case 256:
152 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
153 default:
154 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
155 }
156 */
157 }
158
159 static const struct aftype inet_aftype = {
160 .name = "inet",
161 .title = "DARPA Internet",
162 .af = AF_INET,
163 .alen = 4,
164 .sprint = INET_sprint,
165 .input = INET_input,
166 };
167
168 #ifdef HAVE_AFINET6
169
170 /* Display an Internet socket address. */
171 /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */
172 static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric)
173 {
174 static char *buff;
175
176 free(buff);
177 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
178 return "[NONE SET]";
179 buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric);
180 return buff;
181 }
182
183 #ifdef UNUSED
184 static int INET6_getsock(char *bufp, struct sockaddr *sap)
185 {
186 struct sockaddr_in6 *sin6;
187
188 sin6 = (struct sockaddr_in6 *) sap;
189 sin6->sin6_family = AF_INET6;
190 sin6->sin6_port = 0;
191
192 if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0)
193 return -1;
194
195 return 16; /* ?;) */
196 }
197 #endif
198
199 static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap)
200 {
201 return INET6_resolve(bufp, (struct sockaddr_in6 *) sap);
202 /*
203 switch (type) {
204 case 1:
205 return (INET6_getsock(bufp, sap));
206 default:
207 return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap));
208 }
209 */
210 }
211
212 static const struct aftype inet6_aftype = {
213 .name = "inet6",
214 .title = "IPv6",
215 .af = AF_INET6,
216 .alen = sizeof(struct in6_addr),
217 .sprint = INET6_sprint,
218 .input = INET6_input,
219 };
220
221 #endif /* HAVE_AFINET6 */
222
223 /* Display an UNSPEC address. */
224 static char* FAST_FUNC UNSPEC_print(unsigned char *ptr)
225 {
226 static char *buff;
227
228 char *pos;
229 unsigned int i;
230
231 if (!buff)
232 buff = xmalloc(sizeof(struct sockaddr) * 3 + 1);
233 pos = buff;
234 for (i = 0; i < sizeof(struct sockaddr); i++) {
235 /* careful -- not every libc's sprintf returns # bytes written */
236 sprintf(pos, "%02X-", (*ptr++ & 0377));
237 pos += 3;
238 }
239 /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */
240 *--pos = '\0';
241 return buff;
242 }
243
244 /* Display an UNSPEC socket address. */
245 static const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM)
246 {
247 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
248 return "[NONE SET]";
249 return UNSPEC_print((unsigned char *)sap->sa_data);
250 }
251
252 static const struct aftype unspec_aftype = {
253 .name = "unspec",
254 .title = "UNSPEC",
255 .af = AF_UNSPEC,
256 .alen = 0,
257 .print = UNSPEC_print,
258 .sprint = UNSPEC_sprint,
259 };
260
261 static const struct aftype *const aftypes[] = {
262 &inet_aftype,
263 #ifdef HAVE_AFINET6
264 &inet6_aftype,
265 #endif
266 &unspec_aftype,
267 NULL
268 };
269
270 /* Check our protocol family table for this family. */
271 const struct aftype* FAST_FUNC get_aftype(const char *name)
272 {
273 const struct aftype *const *afp;
274
275 afp = aftypes;
276 while (*afp != NULL) {
277 if (!strcmp((*afp)->name, name))
278 return (*afp);
279 afp++;
280 }
281 return NULL;
282 }
283
284 /* Check our protocol family table for this family. */
285 static const struct aftype *get_afntype(int af)
286 {
287 const struct aftype *const *afp;
288
289 afp = aftypes;
290 while (*afp != NULL) {
291 if ((*afp)->af == af)
292 return *afp;
293 afp++;
294 }
295 return NULL;
296 }
297
298 struct user_net_device_stats {
299 unsigned long long rx_packets; /* total packets received */
300 unsigned long long tx_packets; /* total packets transmitted */
301 unsigned long long rx_bytes; /* total bytes received */
302 unsigned long long tx_bytes; /* total bytes transmitted */
303 unsigned long rx_errors; /* bad packets received */
304 unsigned long tx_errors; /* packet transmit problems */
305 unsigned long rx_dropped; /* no space in linux buffers */
306 unsigned long tx_dropped; /* no space available in linux */
307 unsigned long rx_multicast; /* multicast packets received */
308 unsigned long rx_compressed;
309 unsigned long tx_compressed;
310 unsigned long collisions;
311
312 /* detailed rx_errors: */
313 unsigned long rx_length_errors;
314 unsigned long rx_over_errors; /* receiver ring buff overflow */
315 unsigned long rx_crc_errors; /* recved pkt with crc error */
316 unsigned long rx_frame_errors; /* recv'd frame alignment error */
317 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
318 unsigned long rx_missed_errors; /* receiver missed packet */
319 /* detailed tx_errors */
320 unsigned long tx_aborted_errors;
321 unsigned long tx_carrier_errors;
322 unsigned long tx_fifo_errors;
323 unsigned long tx_heartbeat_errors;
324 unsigned long tx_window_errors;
325 };
326
327 struct interface {
328 struct interface *next, *prev;
329 char name[IFNAMSIZ]; /* interface name */
330 short type; /* if type */
331 short flags; /* various flags */
332 int metric; /* routing metric */
333 int mtu; /* MTU value */
334 int tx_queue_len; /* transmit queue length */
335 struct ifmap map; /* hardware setup */
336 struct sockaddr addr; /* IP address */
337 struct sockaddr dstaddr; /* P-P IP address */
338 struct sockaddr broadaddr; /* IP broadcast address */
339 struct sockaddr netmask; /* IP network mask */
340 int has_ip;
341 char hwaddr[32]; /* HW address */
342 int statistics_valid;
343 struct user_net_device_stats stats; /* statistics */
344 int keepalive; /* keepalive value for SLIP */
345 int outfill; /* outfill value for SLIP */
346 };
347
348
349 smallint interface_opt_a; /* show all interfaces */
350
351 static struct interface *int_list, *int_last;
352
353
354 #if 0
355 /* like strcmp(), but knows about numbers */
356 except that the freshly added calls to xatoul() brf on ethernet aliases with
357 uClibc with e.g.: ife->name='lo' name='eth0:1'
358 static int nstrcmp(const char *a, const char *b)
359 {
360 const char *a_ptr = a;
361 const char *b_ptr = b;
362
363 while (*a == *b) {
364 if (*a == '\0') {
365 return 0;
366 }
367 if (!isdigit(*a) && isdigit(*(a+1))) {
368 a_ptr = a+1;
369 b_ptr = b+1;
370 }
371 a++;
372 b++;
373 }
374
375 if (isdigit(*a) && isdigit(*b)) {
376 return xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1;
377 }
378 return *a - *b;
379 }
380 #endif
381
382 static struct interface *add_interface(char *name)
383 {
384 struct interface *ife, **nextp, *new;
385
386 for (ife = int_last; ife; ife = ife->prev) {
387 int n = /*n*/strcmp(ife->name, name);
388
389 if (n == 0)
390 return ife;
391 if (n < 0)
392 break;
393 }
394
395 new = xzalloc(sizeof(*new));
396 strncpy_IFNAMSIZ(new->name, name);
397 nextp = ife ? &ife->next : &int_list;
398 new->prev = ife;
399 new->next = *nextp;
400 if (new->next)
401 new->next->prev = new;
402 else
403 int_last = new;
404 *nextp = new;
405 return new;
406 }
407
408 static char *get_name(char *name, char *p)
409 {
410 /* Extract <name> from nul-terminated p where p matches
411 * <name>: after leading whitespace.
412 * If match is not made, set name empty and return unchanged p
413 */
414 char *nameend;
415 char *namestart = skip_whitespace(p);
416
417 nameend = namestart;
418 while (*nameend && *nameend != ':' && !isspace(*nameend))
419 nameend++;
420 if (*nameend == ':') {
421 if ((nameend - namestart) < IFNAMSIZ) {
422 memcpy(name, namestart, nameend - namestart);
423 name[nameend - namestart] = '\0';
424 p = nameend;
425 } else {
426 /* Interface name too large */
427 name[0] = '\0';
428 }
429 } else {
430 /* trailing ':' not found - return empty */
431 name[0] = '\0';
432 }
433 return p + 1;
434 }
435
436 /* If scanf supports size qualifiers for %n conversions, then we can
437 * use a modified fmt that simply stores the position in the fields
438 * having no associated fields in the proc string. Of course, we need
439 * to zero them again when we're done. But that is smaller than the
440 * old approach of multiple scanf occurrences with large numbers of
441 * args. */
442
443 /* static const char *const ss_fmt[] = { */
444 /* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */
445 /* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */
446 /* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */
447 /* }; */
448
449 /* Lie about the size of the int pointed to for %n. */
450 #if INT_MAX == LONG_MAX
451 static const char *const ss_fmt[] = {
452 "%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u",
453 "%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u",
454 "%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u"
455 };
456 #else
457 static const char *const ss_fmt[] = {
458 "%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu",
459 "%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu",
460 "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu"
461 };
462
463 #endif
464
465 static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn)
466 {
467 memset(&ife->stats, 0, sizeof(struct user_net_device_stats));
468
469 sscanf(bp, ss_fmt[procnetdev_vsn],
470 &ife->stats.rx_bytes, /* missing for 0 */
471 &ife->stats.rx_packets,
472 &ife->stats.rx_errors,
473 &ife->stats.rx_dropped,
474 &ife->stats.rx_fifo_errors,
475 &ife->stats.rx_frame_errors,
476 &ife->stats.rx_compressed, /* missing for <= 1 */
477 &ife->stats.rx_multicast, /* missing for <= 1 */
478 &ife->stats.tx_bytes, /* missing for 0 */
479 &ife->stats.tx_packets,
480 &ife->stats.tx_errors,
481 &ife->stats.tx_dropped,
482 &ife->stats.tx_fifo_errors,
483 &ife->stats.collisions,
484 &ife->stats.tx_carrier_errors,
485 &ife->stats.tx_compressed /* missing for <= 1 */
486 );
487
488 if (procnetdev_vsn <= 1) {
489 if (procnetdev_vsn == 0) {
490 ife->stats.rx_bytes = 0;
491 ife->stats.tx_bytes = 0;
492 }
493 ife->stats.rx_multicast = 0;
494 ife->stats.rx_compressed = 0;
495 ife->stats.tx_compressed = 0;
496 }
497 }
498
499 static int procnetdev_version(char *buf)
500 {
501 if (strstr(buf, "compressed"))
502 return 2;
503 if (strstr(buf, "bytes"))
504 return 1;
505 return 0;
506 }
507
508 static int if_readconf(void)
509 {
510 int numreqs = 30;
511 struct ifconf ifc;
512 struct ifreq *ifr;
513 int n, err = -1;
514 int skfd;
515
516 ifc.ifc_buf = NULL;
517
518 /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets
519 (as of 2.1.128) */
520 skfd = socket(AF_INET, SOCK_DGRAM, 0);
521 if (skfd < 0) {
522 bb_perror_msg("error: no inet socket available");
523 return -1;
524 }
525
526 for (;;) {
527 ifc.ifc_len = sizeof(struct ifreq) * numreqs;
528 ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len);
529
530 if (ioctl_or_warn(skfd, SIOCGIFCONF, &ifc) < 0) {
531 goto out;
532 }
533 if (ifc.ifc_len == (int)(sizeof(struct ifreq) * numreqs)) {
534 /* assume it overflowed and try again */
535 numreqs += 10;
536 continue;
537 }
538 break;
539 }
540
541 ifr = ifc.ifc_req;
542 for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
543 add_interface(ifr->ifr_name);
544 ifr++;
545 }
546 err = 0;
547
548 out:
549 close(skfd);
550 free(ifc.ifc_buf);
551 return err;
552 }
553
554 static int if_readlist_proc(char *target)
555 {
556 static smallint proc_read;
557
558 FILE *fh;
559 char buf[512];
560 struct interface *ife;
561 int err, procnetdev_vsn;
562
563 if (proc_read)
564 return 0;
565 if (!target)
566 proc_read = 1;
567
568 fh = fopen_or_warn(_PATH_PROCNET_DEV, "r");
569 if (!fh) {
570 return if_readconf();
571 }
572 fgets(buf, sizeof buf, fh); /* eat line */
573 fgets(buf, sizeof buf, fh);
574
575 procnetdev_vsn = procnetdev_version(buf);
576
577 err = 0;
578 while (fgets(buf, sizeof buf, fh)) {
579 char *s, name[128];
580
581 s = get_name(name, buf);
582 ife = add_interface(name);
583 get_dev_fields(s, ife, procnetdev_vsn);
584 ife->statistics_valid = 1;
585 if (target && !strcmp(target, name))
586 break;
587 }
588 if (ferror(fh)) {
589 bb_perror_msg(_PATH_PROCNET_DEV);
590 err = -1;
591 proc_read = 0;
592 }
593 fclose(fh);
594 return err;
595 }
596
597 static int if_readlist(void)
598 {
599 int err = if_readlist_proc(NULL);
600 /* Needed in order to get ethN:M aliases */
601 if (!err)
602 err = if_readconf();
603 return err;
604 }
605
606 /* Fetch the interface configuration from the kernel. */
607 static int if_fetch(struct interface *ife)
608 {
609 struct ifreq ifr;
610 char *ifname = ife->name;
611 int skfd;
612
613 skfd = xsocket(AF_INET, SOCK_DGRAM, 0);
614
615 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
616 if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) {
617 close(skfd);
618 return -1;
619 }
620 ife->flags = ifr.ifr_flags;
621
622 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
623 memset(ife->hwaddr, 0, 32);
624 if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0)
625 memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8);
626
627 ife->type = ifr.ifr_hwaddr.sa_family;
628
629 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
630 ife->metric = 0;
631 if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0)
632 ife->metric = ifr.ifr_metric;
633
634 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
635 ife->mtu = 0;
636 if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0)
637 ife->mtu = ifr.ifr_mtu;
638
639 memset(&ife->map, 0, sizeof(struct ifmap));
640 #ifdef SIOCGIFMAP
641 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
642 if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0)
643 ife->map = ifr.ifr_map;
644 #endif
645
646 #ifdef HAVE_TXQUEUELEN
647 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
648 ife->tx_queue_len = -1; /* unknown value */
649 if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0)
650 ife->tx_queue_len = ifr.ifr_qlen;
651 #else
652 ife->tx_queue_len = -1; /* unknown value */
653 #endif
654
655 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
656 ifr.ifr_addr.sa_family = AF_INET;
657 memset(&ife->addr, 0, sizeof(struct sockaddr));
658 if (ioctl(skfd, SIOCGIFADDR, &ifr) == 0) {
659 ife->has_ip = 1;
660 ife->addr = ifr.ifr_addr;
661 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
662 memset(&ife->dstaddr, 0, sizeof(struct sockaddr));
663 if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0)
664 ife->dstaddr = ifr.ifr_dstaddr;
665
666 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
667 memset(&ife->broadaddr, 0, sizeof(struct sockaddr));
668 if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0)
669 ife->broadaddr = ifr.ifr_broadaddr;
670
671 strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
672 memset(&ife->netmask, 0, sizeof(struct sockaddr));
673 if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0)
674 ife->netmask = ifr.ifr_netmask;
675 }
676
677 close(skfd);
678 return 0;
679 }
680
681 static int do_if_fetch(struct interface *ife)
682 {
683 if (if_fetch(ife) < 0) {
684 const char *errmsg;
685
686 if (errno == ENODEV) {
687 /* Give better error message for this case. */
688 errmsg = "Device not found";
689 } else {
690 errmsg = strerror(errno);
691 }
692 bb_error_msg("%s: error fetching interface information: %s",
693 ife->name, errmsg);
694 return -1;
695 }
696 return 0;
697 }
698
699 static const struct hwtype unspec_hwtype = {
700 .name = "unspec",
701 .title = "UNSPEC",
702 .type = -1,
703 .print = UNSPEC_print
704 };
705
706 static const struct hwtype loop_hwtype = {
707 .name = "loop",
708 .title = "Local Loopback",
709 .type = ARPHRD_LOOPBACK
710 };
711
712 /* Display an Ethernet address in readable format. */
713 static char* FAST_FUNC ether_print(unsigned char *ptr)
714 {
715 static char *buff;
716
717 free(buff);
718 buff = xasprintf("%02X:%02X:%02X:%02X:%02X:%02X",
719 (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
720 (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
721 );
722 return buff;
723 }
724
725 static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap);
726
727 static const struct hwtype ether_hwtype = {
728 .name = "ether",
729 .title = "Ethernet",
730 .type = ARPHRD_ETHER,
731 .alen = ETH_ALEN,
732 .print = ether_print,
733 .input = ether_input
734 };
735
736 static unsigned hexchar2int(char c)
737 {
738 if (isdigit(c))
739 return c - '0';
740 c &= ~0x20; /* a -> A */
741 if ((unsigned)(c - 'A') <= 5)
742 return c - ('A' - 10);
743 return ~0U;
744 }
745
746 /* Input an Ethernet address and convert to binary. */
747 static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap)
748 {
749 unsigned char *ptr;
750 char c;
751 int i;
752 unsigned val;
753
754 sap->sa_family = ether_hwtype.type;
755 ptr = (unsigned char*) sap->sa_data;
756
757 i = 0;
758 while ((*bufp != '\0') && (i < ETH_ALEN)) {
759 val = hexchar2int(*bufp++) * 0x10;
760 if (val > 0xff) {
761 errno = EINVAL;
762 return -1;
763 }
764 c = *bufp;
765 if (c == ':' || c == 0)
766 val >>= 4;
767 else {
768 val |= hexchar2int(c);
769 if (val > 0xff) {
770 errno = EINVAL;
771 return -1;
772 }
773 }
774 if (c != 0)
775 bufp++;
776 *ptr++ = (unsigned char) val;
777 i++;
778
779 /* We might get a semicolon here - not required. */
780 if (*bufp == ':') {
781 bufp++;
782 }
783 }
784 return 0;
785 }
786
787 static const struct hwtype ppp_hwtype = {
788 .name = "ppp",
789 .title = "Point-to-Point Protocol",
790 .type = ARPHRD_PPP
791 };
792
793 #if ENABLE_FEATURE_IPV6
794 static const struct hwtype sit_hwtype = {
795 .name = "sit",
796 .title = "IPv6-in-IPv4",
797 .type = ARPHRD_SIT,
798 .print = UNSPEC_print,
799 .suppress_null_addr = 1
800 };
801 #endif
802 #if ENABLE_FEATURE_HWIB
803 static const struct hwtype ib_hwtype = {
804 .name = "infiniband",
805 .title = "InfiniBand",
806 .type = ARPHRD_INFINIBAND,
807 .alen = INFINIBAND_ALEN,
808 .print = UNSPEC_print,
809 .input = in_ib,
810 };
811 #endif
812
813
814 static const struct hwtype *const hwtypes[] = {
815 &loop_hwtype,
816 &ether_hwtype,
817 &ppp_hwtype,
818 &unspec_hwtype,
819 #if ENABLE_FEATURE_IPV6
820 &sit_hwtype,
821 #endif
822 #if ENABLE_FEATURE_HWIB
823 &ib_hwtype,
824 #endif
825 NULL
826 };
827
828 #ifdef IFF_PORTSEL
829 static const char *const if_port_text[] = {
830 /* Keep in step with <linux/netdevice.h> */
831 "unknown",
832 "10base2",
833 "10baseT",
834 "AUI",
835 "100baseT",
836 "100baseTX",
837 "100baseFX",
838 NULL
839 };
840 #endif
841
842 /* Check our hardware type table for this type. */
843 const struct hwtype* FAST_FUNC get_hwtype(const char *name)
844 {
845 const struct hwtype *const *hwp;
846
847 hwp = hwtypes;
848 while (*hwp != NULL) {
849 if (!strcmp((*hwp)->name, name))
850 return (*hwp);
851 hwp++;
852 }
853 return NULL;
854 }
855
856 /* Check our hardware type table for this type. */
857 const struct hwtype* FAST_FUNC get_hwntype(int type)
858 {
859 const struct hwtype *const *hwp;
860
861 hwp = hwtypes;
862 while (*hwp != NULL) {
863 if ((*hwp)->type == type)
864 return *hwp;
865 hwp++;
866 }
867 return NULL;
868 }
869
870 /* return 1 if address is all zeros */
871 static int hw_null_address(const struct hwtype *hw, void *ap)
872 {
873 int i;
874 unsigned char *address = (unsigned char *) ap;
875
876 for (i = 0; i < hw->alen; i++)
877 if (address[i])
878 return 0;
879 return 1;
880 }
881
882 static const char TRext[] ALIGN1 = "\0\0\0Ki\0Mi\0Gi\0Ti";
883
884 static void print_bytes_scaled(unsigned long long ull, const char *end)
885 {
886 unsigned long long int_part;
887 const char *ext;
888 unsigned int frac_part;
889 int i;
890
891 frac_part = 0;
892 ext = TRext;
893 int_part = ull;
894 i = 4;
895 do {
896 if (int_part >= 1024) {
897 frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
898 int_part /= 1024;
899 ext += 3; /* KiB, MiB, GiB, TiB */
900 }
901 --i;
902 } while (i);
903
904 printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end);
905 }
906
907
908 #ifdef HAVE_AFINET6
909 #define IPV6_ADDR_ANY 0x0000U
910
911 #define IPV6_ADDR_UNICAST 0x0001U
912 #define IPV6_ADDR_MULTICAST 0x0002U
913 #define IPV6_ADDR_ANYCAST 0x0004U
914
915 #define IPV6_ADDR_LOOPBACK 0x0010U
916 #define IPV6_ADDR_LINKLOCAL 0x0020U
917 #define IPV6_ADDR_SITELOCAL 0x0040U
918
919 #define IPV6_ADDR_COMPATv4 0x0080U
920
921 #define IPV6_ADDR_SCOPE_MASK 0x00f0U
922
923 #define IPV6_ADDR_MAPPED 0x1000U
924 #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
925
926
927 static void ife_print6(struct interface *ptr)
928 {
929 FILE *f;
930 char addr6[40], devname[20];
931 struct sockaddr_in6 sap;
932 int plen, scope, dad_status, if_idx;
933 char addr6p[8][5];
934
935 f = fopen_for_read(_PATH_PROCNET_IFINET6);
936 if (f == NULL)
937 return;
938
939 while (fscanf
940 (f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n",
941 addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4],
942 addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope,
943 &dad_status, devname) != EOF
944 ) {
945 if (!strcmp(devname, ptr->name)) {
946 sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
947 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
948 addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
949 inet_pton(AF_INET6, addr6,
950 (struct sockaddr *) &sap.sin6_addr);
951 sap.sin6_family = AF_INET6;
952 printf(" inet6 addr: %s/%d",
953 INET6_sprint((struct sockaddr *) &sap, 1),
954 plen);
955 printf(" Scope:");
956 switch (scope & IPV6_ADDR_SCOPE_MASK) {
957 case 0:
958 puts("Global");
959 break;
960 case IPV6_ADDR_LINKLOCAL:
961 puts("Link");
962 break;
963 case IPV6_ADDR_SITELOCAL:
964 puts("Site");
965 break;
966 case IPV6_ADDR_COMPATv4:
967 puts("Compat");
968 break;
969 case IPV6_ADDR_LOOPBACK:
970 puts("Host");
971 break;
972 default:
973 puts("Unknown");
974 }
975 }
976 }
977 fclose(f);
978 }
979 #else
980 #define ife_print6(a) ((void)0)
981 #endif
982
983 static void ife_print(struct interface *ptr)
984 {
985 const struct aftype *ap;
986 const struct hwtype *hw;
987 int hf;
988 int can_compress = 0;
989
990 ap = get_afntype(ptr->addr.sa_family);
991 if (ap == NULL)
992 ap = get_afntype(0);
993
994 hf = ptr->type;
995
996 if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6)
997 can_compress = 1;
998
999 hw = get_hwntype(hf);
1000 if (hw == NULL)
1001 hw = get_hwntype(-1);
1002
1003 printf("%-10s Link encap:%s ", ptr->name, hw->title);
1004 /* For some hardware types (eg Ash, ATM) we don't print the
1005 hardware address if it's null. */
1006 if (hw->print != NULL
1007 && !(hw_null_address(hw, ptr->hwaddr) && hw->suppress_null_addr)
1008 ) {
1009 printf("HWaddr %s ", hw->print((unsigned char *)ptr->hwaddr));
1010 }
1011 #ifdef IFF_PORTSEL
1012 if (ptr->flags & IFF_PORTSEL) {
1013 printf("Media:%s", if_port_text[ptr->map.port] /* [0] */);
1014 if (ptr->flags & IFF_AUTOMEDIA)
1015 printf("(auto)");
1016 }
1017 #endif
1018 bb_putchar('\n');
1019
1020 if (ptr->has_ip) {
1021 printf(" %s addr:%s ", ap->name,
1022 ap->sprint(&ptr->addr, 1));
1023 if (ptr->flags & IFF_POINTOPOINT) {
1024 printf(" P-t-P:%s ", ap->sprint(&ptr->dstaddr, 1));
1025 }
1026 if (ptr->flags & IFF_BROADCAST) {
1027 printf(" Bcast:%s ", ap->sprint(&ptr->broadaddr, 1));
1028 }
1029 printf(" Mask:%s\n", ap->sprint(&ptr->netmask, 1));
1030 }
1031
1032 ife_print6(ptr);
1033
1034 printf(" ");
1035 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
1036
1037 if (ptr->flags == 0) {
1038 printf("[NO FLAGS] ");
1039 } else {
1040 static const char ife_print_flags_strs[] ALIGN1 =
1041 "UP\0"
1042 "BROADCAST\0"
1043 "DEBUG\0"
1044 "LOOPBACK\0"
1045 "POINTOPOINT\0"
1046 "NOTRAILERS\0"
1047 "RUNNING\0"
1048 "NOARP\0"
1049 "PROMISC\0"
1050 "ALLMULTI\0"
1051 "SLAVE\0"
1052 "MASTER\0"
1053 "MULTICAST\0"
1054 #ifdef HAVE_DYNAMIC
1055 "DYNAMIC\0"
1056 #endif
1057 ;
1058 static const unsigned short ife_print_flags_mask[] ALIGN2 = {
1059 IFF_UP,
1060 IFF_BROADCAST,
1061 IFF_DEBUG,
1062 IFF_LOOPBACK,
1063 IFF_POINTOPOINT,
1064 IFF_NOTRAILERS,
1065 IFF_RUNNING,
1066 IFF_NOARP,
1067 IFF_PROMISC,
1068 IFF_ALLMULTI,
1069 IFF_SLAVE,
1070 IFF_MASTER,
1071 IFF_MULTICAST
1072 #ifdef HAVE_DYNAMIC
1073 ,IFF_DYNAMIC
1074 #endif
1075 };
1076 const unsigned short *mask = ife_print_flags_mask;
1077 const char *str = ife_print_flags_strs;
1078 do {
1079 if (ptr->flags & *mask) {
1080 printf("%s ", str);
1081 }
1082 mask++;
1083 str += strlen(str) + 1;
1084 } while (*str);
1085 }
1086
1087 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
1088 printf(" MTU:%d Metric:%d", ptr->mtu, ptr->metric ? ptr->metric : 1);
1089 #ifdef SIOCSKEEPALIVE
1090 if (ptr->outfill || ptr->keepalive)
1091 printf(" Outfill:%d Keepalive:%d", ptr->outfill, ptr->keepalive);
1092 #endif
1093 bb_putchar('\n');
1094
1095 /* If needed, display the interface statistics. */
1096
1097 if (ptr->statistics_valid) {
1098 /* XXX: statistics are currently only printed for the primary address,
1099 * not for the aliases, although strictly speaking they're shared
1100 * by all addresses.
1101 */
1102 printf(" ");
1103
1104 printf("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n",
1105 ptr->stats.rx_packets, ptr->stats.rx_errors,
1106 ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
1107 ptr->stats.rx_frame_errors);
1108 if (can_compress)
1109 printf(" compressed:%lu\n",
1110 ptr->stats.rx_compressed);
1111 printf(" ");
1112 printf("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n",
1113 ptr->stats.tx_packets, ptr->stats.tx_errors,
1114 ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
1115 ptr->stats.tx_carrier_errors);
1116 printf(" collisions:%lu ", ptr->stats.collisions);
1117 if (can_compress)
1118 printf("compressed:%lu ", ptr->stats.tx_compressed);
1119 if (ptr->tx_queue_len != -1)
1120 printf("txqueuelen:%d ", ptr->tx_queue_len);
1121 printf("\n R");
1122 print_bytes_scaled(ptr->stats.rx_bytes, " T");
1123 print_bytes_scaled(ptr->stats.tx_bytes, "\n");
1124 }
1125
1126 if (ptr->map.irq || ptr->map.mem_start
1127 || ptr->map.dma || ptr->map.base_addr
1128 ) {
1129 printf(" ");
1130 if (ptr->map.irq)
1131 printf("Interrupt:%d ", ptr->map.irq);
1132 if (ptr->map.base_addr >= 0x100) /* Only print devices using it for
1133 I/O maps */
1134 printf("Base address:0x%lx ",
1135 (unsigned long) ptr->map.base_addr);
1136 if (ptr->map.mem_start) {
1137 printf("Memory:%lx-%lx ", ptr->map.mem_start,
1138 ptr->map.mem_end);
1139 }
1140 if (ptr->map.dma)
1141 printf("DMA chan:%x ", ptr->map.dma);
1142 bb_putchar('\n');
1143 }
1144 bb_putchar('\n');
1145 }
1146
1147 static int do_if_print(struct interface *ife) /*, int *opt_a)*/
1148 {
1149 int res;
1150
1151 res = do_if_fetch(ife);
1152 if (res >= 0) {
1153 if ((ife->flags & IFF_UP) || interface_opt_a)
1154 ife_print(ife);
1155 }
1156 return res;
1157 }
1158
1159 static struct interface *lookup_interface(char *name)
1160 {
1161 struct interface *ife = NULL;
1162
1163 if (if_readlist_proc(name) < 0)
1164 return NULL;
1165 ife = add_interface(name);
1166 return ife;
1167 }
1168
1169 #ifdef UNUSED
1170 static int for_all_interfaces(int (*doit) (struct interface *, void *),
1171 void *cookie)
1172 {
1173 struct interface *ife;
1174
1175 if (!int_list && (if_readlist() < 0))
1176 return -1;
1177 for (ife = int_list; ife; ife = ife->next) {
1178 int err = doit(ife, cookie);
1179 if (err)
1180 return err;
1181 }
1182 return 0;
1183 }
1184 #endif
1185
1186 /* for ipv4 add/del modes */
1187 static int if_print(char *ifname)
1188 {
1189 struct interface *ife;
1190 int res;
1191
1192 if (!ifname) {
1193 /*res = for_all_interfaces(do_if_print, &interface_opt_a);*/
1194 if (!int_list && (if_readlist() < 0))
1195 return -1;
1196 for (ife = int_list; ife; ife = ife->next) {
1197 int err = do_if_print(ife); /*, &interface_opt_a);*/
1198 if (err)
1199 return err;
1200 }
1201 return 0;
1202 }
1203 ife = lookup_interface(ifname);
1204 res = do_if_fetch(ife);
1205 if (res >= 0)
1206 ife_print(ife);
1207 return res;
1208 }
1209
1210 #if ENABLE_FEATURE_HWIB
1211 /* Input an Infiniband address and convert to binary. */
1212 int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap)
1213 {
1214 sap->sa_family = ib_hwtype.type;
1215 //TODO: error check?
1216 hex2bin((char*)sap->sa_data, bufp, INFINIBAND_ALEN);
1217 # ifdef HWIB_DEBUG
1218 fprintf(stderr, "in_ib(%s): %s\n", bufp, UNSPEC_print(sap->sa_data));
1219 # endif
1220 return 0;
1221 }
1222 #endif
1223
1224 int FAST_FUNC display_interfaces(char *ifname)
1225 {
1226 int status;
1227
1228 status = if_print(ifname);
1229
1230 return (status < 0); /* status < 0 == 1 -- error */
1231 }
Tomato firmware and modifications.