Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : multiple interface handling
4 : Copyright (C) Andrew Tridgell 1992-1998
5 : Copyright (C) Jeremy Allison 2007
6 :
7 : This program is free software; you can redistribute it and/or modify
8 : it under the terms of the GNU General Public License as published by
9 : the Free Software Foundation; either version 3 of the License, or
10 : (at your option) any later version.
11 :
12 : This program is distributed in the hope that it will be useful,
13 : but WITHOUT ANY WARRANTY; without even the implied warranty of
14 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 : GNU General Public License for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with this program. If not, see <http://www.gnu.org/licenses/>.
19 : */
20 :
21 : #include "includes.h"
22 : #include "lib/socket/interfaces.h"
23 : #include "librpc/gen_ndr/ioctl.h"
24 : #include "lib/util/smb_strtox.h"
25 :
26 : static struct iface_struct *probed_ifaces;
27 : static int total_probed;
28 :
29 : static struct interface *local_interfaces;
30 :
31 : /****************************************************************************
32 : Check if an IP is one of mine.
33 : **************************************************************************/
34 :
35 11636 : bool ismyaddr(const struct sockaddr *ip)
36 : {
37 0 : struct interface *i;
38 31384 : for (i=local_interfaces;i;i=i->next) {
39 23990 : if (sockaddr_equal((struct sockaddr *)&i->ip,ip)) {
40 4242 : return true;
41 : }
42 : }
43 7394 : return false;
44 : }
45 :
46 8581 : bool ismyip_v4(struct in_addr ip)
47 : {
48 0 : struct sockaddr_storage ss;
49 8581 : in_addr_to_sockaddr_storage(&ss, ip);
50 8581 : return ismyaddr((struct sockaddr *)&ss);
51 : }
52 :
53 : /****************************************************************************
54 : Try and find an interface that matches an ip. If we cannot, return NULL.
55 : **************************************************************************/
56 :
57 135280 : static struct interface *iface_find(const struct sockaddr *ip,
58 : bool check_mask)
59 : {
60 450 : struct interface *i;
61 :
62 135280 : if (is_address_any(ip)) {
63 0 : return local_interfaces;
64 : }
65 :
66 489774 : for (i=local_interfaces;i;i=i->next) {
67 354902 : if (check_mask) {
68 816 : if (same_net(ip, (struct sockaddr *)&i->ip, (struct sockaddr *)&i->netmask)) {
69 408 : return i;
70 : }
71 354086 : } else if (sockaddr_equal((struct sockaddr *)&i->ip, ip)) {
72 0 : return i;
73 : }
74 : }
75 :
76 134422 : return NULL;
77 : }
78 :
79 : /****************************************************************************
80 : Check if a packet is from a local (known) net.
81 : **************************************************************************/
82 :
83 0 : bool is_local_net(const struct sockaddr *from)
84 : {
85 0 : struct interface *i;
86 0 : for (i=local_interfaces;i;i=i->next) {
87 0 : if (same_net(from, (struct sockaddr *)&i->ip, (struct sockaddr *)&i->netmask)) {
88 0 : return true;
89 : }
90 : }
91 0 : return false;
92 : }
93 :
94 : #if defined(HAVE_IPV6)
95 0 : void setup_linklocal_scope_id(struct sockaddr *pss)
96 : {
97 0 : struct interface *i;
98 0 : for (i=local_interfaces;i;i=i->next) {
99 0 : if (sockaddr_equal((struct sockaddr *)&i->ip,pss)) {
100 0 : struct sockaddr_in6 *psa6 =
101 : (struct sockaddr_in6 *)pss;
102 0 : psa6->sin6_scope_id = if_nametoindex(i->name);
103 0 : return;
104 : }
105 : }
106 : }
107 : #endif
108 :
109 : /****************************************************************************
110 : Check if a packet is from a local (known) net.
111 : **************************************************************************/
112 :
113 0 : bool is_local_net_v4(struct in_addr from)
114 : {
115 0 : struct sockaddr_storage ss;
116 :
117 0 : in_addr_to_sockaddr_storage(&ss, from);
118 0 : return is_local_net((struct sockaddr *)&ss);
119 : }
120 :
121 : /****************************************************************************
122 : How many interfaces do we have ?
123 : **************************************************************************/
124 :
125 872 : int iface_count(void)
126 : {
127 872 : int ret = 0;
128 8 : struct interface *i;
129 :
130 3181 : for (i=local_interfaces;i;i=i->next) {
131 2309 : ret++;
132 : }
133 872 : return ret;
134 : }
135 :
136 : /****************************************************************************
137 : How many non-loopback IPv4 interfaces do we have ?
138 : **************************************************************************/
139 :
140 86 : int iface_count_v4_nl(void)
141 : {
142 86 : int ret = 0;
143 0 : struct interface *i;
144 :
145 258 : for (i=local_interfaces;i;i=i->next) {
146 172 : if (is_loopback_addr((struct sockaddr *)&i->ip)) {
147 0 : continue;
148 : }
149 172 : if (i->ip.ss_family == AF_INET) {
150 86 : ret++;
151 : }
152 : }
153 86 : return ret;
154 : }
155 :
156 : /****************************************************************************
157 : Return a pointer to the in_addr of the first IPv4 interface that's
158 : not 0.0.0.0.
159 : **************************************************************************/
160 :
161 0 : const struct in_addr *first_ipv4_iface(void)
162 : {
163 0 : struct interface *i;
164 :
165 0 : for (i=local_interfaces;i ;i=i->next) {
166 0 : if ((i->ip.ss_family == AF_INET) &&
167 0 : (!is_zero_ip_v4(((struct sockaddr_in *)&i->ip)->sin_addr)))
168 : {
169 0 : break;
170 : }
171 : }
172 :
173 0 : if (!i) {
174 0 : return NULL;
175 : }
176 0 : return &((const struct sockaddr_in *)&i->ip)->sin_addr;
177 : }
178 :
179 : /****************************************************************************
180 : Return the Nth interface.
181 : **************************************************************************/
182 :
183 326 : struct interface *get_interface(int n)
184 : {
185 16 : struct interface *i;
186 :
187 489 : for (i=local_interfaces;i && n;i=i->next) {
188 163 : n--;
189 : }
190 :
191 326 : if (i) {
192 326 : return i;
193 : }
194 0 : return NULL;
195 : }
196 :
197 : /****************************************************************************
198 : Return IP sockaddr_storage of the Nth interface.
199 : **************************************************************************/
200 :
201 386 : const struct sockaddr_storage *iface_n_sockaddr_storage(int n)
202 : {
203 0 : struct interface *i;
204 :
205 1034 : for (i=local_interfaces;i && n;i=i->next) {
206 648 : n--;
207 : }
208 :
209 386 : if (i) {
210 386 : return &i->ip;
211 : }
212 0 : return NULL;
213 : }
214 :
215 : /****************************************************************************
216 : Return IPv4 of the Nth interface (if a v4 address). NULL otherwise.
217 : **************************************************************************/
218 :
219 170 : const struct in_addr *iface_n_ip_v4(int n)
220 : {
221 0 : struct interface *i;
222 :
223 255 : for (i=local_interfaces;i && n;i=i->next) {
224 85 : n--;
225 : }
226 :
227 170 : if (i && i->ip.ss_family == AF_INET) {
228 85 : return &((const struct sockaddr_in *)&i->ip)->sin_addr;
229 : }
230 85 : return NULL;
231 : }
232 :
233 : /****************************************************************************
234 : Return IPv4 bcast of the Nth interface (if a v4 address). NULL otherwise.
235 : **************************************************************************/
236 :
237 0 : const struct in_addr *iface_n_bcast_v4(int n)
238 : {
239 0 : struct interface *i;
240 :
241 0 : for (i=local_interfaces;i && n;i=i->next) {
242 0 : n--;
243 : }
244 :
245 0 : if (i && i->ip.ss_family == AF_INET) {
246 0 : return &((const struct sockaddr_in *)&i->bcast)->sin_addr;
247 : }
248 0 : return NULL;
249 : }
250 :
251 : /****************************************************************************
252 : Return bcast of the Nth interface.
253 : **************************************************************************/
254 :
255 1085 : const struct sockaddr_storage *iface_n_bcast(int n)
256 : {
257 0 : struct interface *i;
258 :
259 3150 : for (i=local_interfaces;i && n;i=i->next) {
260 2065 : n--;
261 : }
262 :
263 1085 : if (i) {
264 1085 : return &i->bcast;
265 : }
266 0 : return NULL;
267 : }
268 :
269 : /* these 3 functions return the ip/bcast/nmask for the interface
270 : most appropriate for the given ip address. If they can't find
271 : an appropriate interface they return the requested field of the
272 : first known interface. */
273 :
274 356 : const struct sockaddr_storage *iface_ip(const struct sockaddr *ip)
275 : {
276 356 : struct interface *i = iface_find(ip, true);
277 356 : if (i) {
278 356 : return &i->ip;
279 : }
280 :
281 : /* Search for the first interface with
282 : * matching address family. */
283 :
284 0 : for (i=local_interfaces;i;i=i->next) {
285 0 : if (i->ip.ss_family == ip->sa_family) {
286 0 : return &i->ip;
287 : }
288 : }
289 0 : return NULL;
290 : }
291 :
292 : /*
293 : return True if a IP is directly reachable on one of our interfaces
294 : */
295 :
296 52 : bool iface_local(const struct sockaddr *ip)
297 : {
298 52 : return iface_find(ip, true) ? true : false;
299 : }
300 :
301 : /****************************************************************************
302 : Add an interface to the linked list of interfaces.
303 : ****************************************************************************/
304 :
305 134872 : static void add_interface(const struct iface_struct *ifs)
306 : {
307 450 : char addr[INET6_ADDRSTRLEN];
308 450 : struct interface *iface;
309 :
310 134872 : if (iface_find((const struct sockaddr *)&ifs->ip, False)) {
311 0 : DEBUG(3,("add_interface: not adding duplicate interface %s\n",
312 : print_sockaddr(addr, sizeof(addr), &ifs->ip) ));
313 0 : return;
314 : }
315 :
316 134872 : if (!(ifs->flags & (IFF_BROADCAST|IFF_LOOPBACK))) {
317 0 : DEBUG(3,("not adding non-broadcast interface %s\n",
318 : ifs->name ));
319 0 : return;
320 : }
321 :
322 134872 : iface = SMB_MALLOC_P(struct interface);
323 134872 : if (!iface) {
324 0 : return;
325 : }
326 :
327 134872 : ZERO_STRUCTPN(iface);
328 :
329 134872 : iface->name = SMB_STRDUP(ifs->name);
330 134872 : if (!iface->name) {
331 0 : SAFE_FREE(iface);
332 0 : return;
333 : }
334 134872 : iface->flags = ifs->flags;
335 134872 : iface->ip = ifs->ip;
336 134872 : iface->netmask = ifs->netmask;
337 134872 : iface->bcast = ifs->bcast;
338 134872 : iface->linkspeed = ifs->linkspeed;
339 134872 : iface->capability = ifs->capability;
340 134872 : iface->if_index = ifs->if_index;
341 134872 : iface->options = ifs->options;
342 :
343 134872 : DLIST_ADD(local_interfaces, iface);
344 :
345 134872 : DEBUG(2,("added interface %s ip=%s ",
346 : iface->name,
347 : print_sockaddr(addr, sizeof(addr), &iface->ip) ));
348 134872 : DEBUG(2,("bcast=%s ",
349 : print_sockaddr(addr, sizeof(addr),
350 : &iface->bcast) ));
351 134872 : DEBUG(2,("netmask=%s\n",
352 : print_sockaddr(addr, sizeof(addr),
353 : &iface->netmask) ));
354 : }
355 :
356 :
357 0 : static void parse_extra_info(char *key,
358 : uint64_t *speed,
359 : uint32_t *cap,
360 : uint32_t *if_index,
361 : uint32_t *options)
362 : {
363 0 : while (key != NULL && *key != '\0') {
364 0 : char *next_key;
365 0 : char *val;
366 0 : int error = 0;
367 :
368 0 : next_key = strchr_m(key, ',');
369 0 : if (next_key != NULL) {
370 0 : *next_key++ = 0;
371 : }
372 :
373 0 : val = strchr_m(key, '=');
374 0 : if (val != NULL) {
375 0 : *val++ = 0;
376 :
377 0 : if (strequal_m(key, "speed")) {
378 0 : *speed = (uint64_t)smb_strtoull(val,
379 : NULL,
380 : 0,
381 : &error,
382 : SMB_STR_STANDARD);
383 0 : if (error != 0) {
384 0 : DBG_DEBUG("Invalid speed value (%s)\n", val);
385 : }
386 0 : } else if (strequal_m(key, "capability")) {
387 0 : if (strequal_m(val, "RSS")) {
388 0 : *cap |= FSCTL_NET_IFACE_RSS_CAPABLE;
389 0 : } else if (strequal(val, "RDMA")) {
390 0 : *cap |= FSCTL_NET_IFACE_RDMA_CAPABLE;
391 : } else {
392 0 : DBG_WARNING("Capability unknown: "
393 : "'%s'\n", val);
394 : }
395 0 : } else if (strequal_m(key, "if_index")) {
396 0 : *if_index = (uint32_t)smb_strtoul(val,
397 : NULL,
398 : 0,
399 : &error,
400 : SMB_STR_STANDARD);
401 0 : if (error != 0) {
402 0 : DBG_DEBUG("Invalid key value (%s)\n", val);
403 : }
404 0 : } else if (strequal_m(key, "options")) {
405 0 : if (strequal_m(val, "dynamic")) {
406 0 : *options |= IFACE_DYNAMIC_OPTION;
407 0 : } else if (strequal_m(val, "nodynamic")) {
408 0 : *options &= ~IFACE_DYNAMIC_OPTION;
409 : } else {
410 0 : DBG_WARNING("Options unknown: "
411 : "'%s'\n", val);
412 : }
413 : } else {
414 0 : DBG_DEBUG("Key unknown: '%s'\n", key);
415 : }
416 : }
417 :
418 0 : key = next_key;
419 : }
420 0 : }
421 :
422 : /****************************************************************************
423 : Interpret a single element from a interfaces= config line.
424 :
425 : This handles the following different forms:
426 :
427 : 1) wildcard interface name
428 : 2) DNS name
429 : 3) IP/masklen
430 : 4) ip/mask
431 : 5) bcast/mask
432 :
433 : Additional information for an interface can be specified with
434 : this extended syntax:
435 :
436 : "interface[;key1=value1[,key2=value2[...]]]"
437 :
438 : Note: The double quoting is important for the
439 : smb.conf parser! Otherwise the ';' and ',' separates
440 : two interfaces.
441 :
442 : where
443 : - keys known: 'speed', 'capability', 'if_index'
444 : - speed is in bits per second
445 : - capabilities known: 'RSS', 'RDMA'
446 : - if_index should be used with care, because
447 : these indexes should not conicide with indexes
448 : the kernel sets...
449 :
450 : Note: The specified values overwrite the autodetected values!
451 :
452 : ****************************************************************************/
453 :
454 134764 : static void interpret_interface(char *token)
455 : {
456 422 : struct sockaddr_storage ss;
457 422 : struct sockaddr_storage ss_mask;
458 422 : struct sockaddr_storage ss_net;
459 422 : struct sockaddr_storage ss_bcast;
460 422 : struct iface_struct ifs;
461 422 : char *p;
462 422 : int i;
463 134764 : bool added=false;
464 134764 : bool goodaddr = false;
465 134764 : uint64_t speed = 0;
466 134764 : uint32_t cap = FSCTL_NET_IFACE_NONE_CAPABLE;
467 134764 : uint32_t if_index = 0;
468 134764 : bool speed_set = false;
469 134764 : bool cap_set = false;
470 134764 : bool if_index_set = false;
471 134764 : uint32_t options = IFACE_NONE_OPTION;
472 134764 : bool options_set = false;
473 :
474 : /*
475 : * extract speed / capability information if present
476 : */
477 134764 : p = strchr_m(token, ';');
478 134764 : if (p != NULL) {
479 0 : *p++ = 0;
480 0 : parse_extra_info(p, &speed, &cap, &if_index, &options);
481 0 : if (speed != 0) {
482 0 : speed_set = true;
483 : }
484 0 : if (cap != FSCTL_NET_IFACE_NONE_CAPABLE) {
485 0 : cap_set = true;
486 : }
487 0 : if (if_index != 0) {
488 0 : if_index_set = true;
489 : }
490 0 : if (options != IFACE_NONE_OPTION) {
491 0 : options_set = true;
492 : }
493 : }
494 :
495 : /* first check if it is an interface name */
496 673820 : for (i=0;i<total_probed;i++) {
497 539056 : if (gen_fnmatch(token, probed_ifaces[i].name) == 0) {
498 0 : if (speed_set) {
499 0 : probed_ifaces[i].linkspeed = speed;
500 : }
501 0 : if (cap_set) {
502 0 : probed_ifaces[i].capability = cap;
503 : }
504 0 : if (if_index_set) {
505 0 : probed_ifaces[i].if_index = if_index;
506 : }
507 0 : if (options_set) {
508 0 : probed_ifaces[i].options = options;
509 : }
510 0 : add_interface(&probed_ifaces[i]);
511 0 : added = true;
512 : }
513 : }
514 134764 : if (added) {
515 0 : return;
516 : }
517 :
518 134764 : p = strchr_m(token,'/');
519 134764 : if (p == NULL) {
520 0 : if (!interpret_string_addr(&ss, token, 0)) {
521 0 : DEBUG(2, ("interpret_interface: Can't find address "
522 : "for %s\n", token));
523 0 : return;
524 : }
525 :
526 0 : for (i=0;i<total_probed;i++) {
527 0 : if (sockaddr_equal((struct sockaddr *)&ss,
528 0 : (struct sockaddr *)&probed_ifaces[i].ip))
529 : {
530 0 : if (speed_set) {
531 0 : probed_ifaces[i].linkspeed = speed;
532 : }
533 0 : if (cap_set) {
534 0 : probed_ifaces[i].capability = cap;
535 : }
536 0 : if (if_index_set) {
537 0 : probed_ifaces[i].if_index = if_index;
538 : }
539 0 : if (options_set) {
540 0 : probed_ifaces[i].options = options;
541 : }
542 0 : add_interface(&probed_ifaces[i]);
543 0 : return;
544 : }
545 : }
546 0 : DEBUG(2,("interpret_interface: "
547 : "can't determine interface for %s\n",
548 : token));
549 0 : return;
550 : }
551 :
552 : /* parse it into an IP address/netmasklength pair */
553 134764 : *p = 0;
554 134764 : goodaddr = interpret_string_addr(&ss, token, 0);
555 134764 : *p++ = '/';
556 :
557 134764 : if (!goodaddr) {
558 0 : DEBUG(2,("interpret_interface: "
559 : "can't determine interface for %s\n",
560 : token));
561 0 : return;
562 : }
563 :
564 134764 : if (strlen(p) > 2) {
565 0 : goodaddr = interpret_string_addr(&ss_mask, p, 0);
566 0 : if (!goodaddr) {
567 0 : DEBUG(2,("interpret_interface: "
568 : "can't determine netmask from %s\n",
569 : p));
570 0 : return;
571 : }
572 : } else {
573 134764 : int error = 0;
574 422 : unsigned long val;
575 :
576 134764 : val = smb_strtoul(p, NULL, 0, &error, SMB_STR_FULL_STR_CONV);
577 134764 : if (error != 0) {
578 0 : DEBUG(2,("interpret_interface: "
579 : "can't determine netmask value from %s\n",
580 : p));
581 0 : return;
582 : }
583 134764 : if (!make_netmask(&ss_mask, &ss, val)) {
584 0 : DEBUG(2,("interpret_interface: "
585 : "can't apply netmask value %lu from %s\n",
586 : val,
587 : p));
588 0 : return;
589 : }
590 : }
591 :
592 134764 : make_bcast(&ss_bcast, &ss, &ss_mask);
593 134764 : make_net(&ss_net, &ss, &ss_mask);
594 :
595 : /* Maybe the first component was a broadcast address. */
596 269528 : if (sockaddr_equal((struct sockaddr *)&ss_bcast, (struct sockaddr *)&ss) ||
597 134764 : sockaddr_equal((struct sockaddr *)&ss_net, (struct sockaddr *)&ss)) {
598 0 : for (i=0;i<total_probed;i++) {
599 0 : if (same_net((struct sockaddr *)&ss,
600 0 : (struct sockaddr *)&probed_ifaces[i].ip,
601 : (struct sockaddr *)&ss_mask)) {
602 : /* Temporarily replace netmask on
603 : * the detected interface - user knows
604 : * best.... */
605 0 : struct sockaddr_storage saved_mask =
606 0 : probed_ifaces[i].netmask;
607 0 : probed_ifaces[i].netmask = ss_mask;
608 0 : DEBUG(2,("interpret_interface: "
609 : "using netmask value %s from "
610 : "config file on interface %s\n",
611 : p,
612 : probed_ifaces[i].name));
613 0 : if (speed_set) {
614 0 : probed_ifaces[i].linkspeed = speed;
615 : }
616 0 : if (cap_set) {
617 0 : probed_ifaces[i].capability = cap;
618 : }
619 0 : if (if_index_set) {
620 0 : probed_ifaces[i].if_index = if_index;
621 : }
622 0 : if (options_set) {
623 0 : probed_ifaces[i].options = options;
624 : }
625 0 : add_interface(&probed_ifaces[i]);
626 0 : probed_ifaces[i].netmask = saved_mask;
627 0 : return;
628 : }
629 : }
630 0 : DEBUG(2,("interpret_interface: Can't determine ip for "
631 : "broadcast address %s\n",
632 : token));
633 0 : return;
634 : }
635 :
636 : /* Just fake up the interface definition. User knows best. */
637 :
638 134764 : DEBUG(2,("interpret_interface: Adding interface %s\n",
639 : token));
640 :
641 134764 : ZERO_STRUCT(ifs);
642 134764 : (void)strlcpy(ifs.name, token, sizeof(ifs.name));
643 134764 : ifs.flags = IFF_BROADCAST;
644 134764 : ifs.ip = ss;
645 134764 : ifs.netmask = ss_mask;
646 134764 : ifs.bcast = ss_bcast;
647 134764 : if (if_index_set) {
648 0 : ifs.if_index = if_index;
649 : }
650 134764 : if (speed_set) {
651 0 : ifs.linkspeed = speed;
652 : } else {
653 134764 : ifs.linkspeed = 1000 * 1000 * 1000;
654 : }
655 134764 : ifs.capability = cap;
656 134764 : ifs.options = options;
657 134764 : add_interface(&ifs);
658 : }
659 :
660 : /****************************************************************************
661 : Load the list of network interfaces.
662 : ****************************************************************************/
663 :
664 26486 : void load_interfaces(void)
665 : {
666 26486 : struct iface_struct *ifaces = NULL;
667 26486 : const char **ptr = lp_interfaces();
668 80 : int i;
669 :
670 26486 : gfree_interfaces();
671 :
672 : /* Probe the kernel for interfaces */
673 26486 : total_probed = get_interfaces(talloc_tos(), &ifaces);
674 :
675 26486 : if (total_probed > 0) {
676 26486 : probed_ifaces = (struct iface_struct *)smb_memdup(ifaces,
677 : sizeof(ifaces[0])*total_probed);
678 26486 : if (!probed_ifaces) {
679 0 : DEBUG(0,("ERROR: smb_memdup failed\n"));
680 0 : exit(1);
681 : }
682 : }
683 26486 : TALLOC_FREE(ifaces);
684 :
685 : /* if we don't have a interfaces line then use all broadcast capable
686 : interfaces except loopback */
687 26486 : if (!ptr || !*ptr || !**ptr) {
688 54 : if (total_probed <= 0) {
689 0 : DEBUG(0,("ERROR: Could not determine network "
690 : "interfaces, you must use a interfaces config line\n"));
691 0 : exit(1);
692 : }
693 270 : for (i=0;i<total_probed;i++) {
694 216 : if (probed_ifaces[i].flags & IFF_BROADCAST) {
695 108 : add_interface(&probed_ifaces[i]);
696 : }
697 : }
698 54 : return;
699 : }
700 :
701 26366 : if (ptr) {
702 161196 : while (*ptr) {
703 134764 : char *ptr_cpy = SMB_STRDUP(*ptr);
704 134764 : if (ptr_cpy) {
705 134764 : interpret_interface(ptr_cpy);
706 134764 : free(ptr_cpy);
707 : }
708 134764 : ptr++;
709 : }
710 : }
711 :
712 26432 : if (!local_interfaces) {
713 0 : DEBUG(0,("WARNING: no network interfaces found\n"));
714 : }
715 : }
716 :
717 :
718 42295 : void gfree_interfaces(void)
719 : {
720 150374 : while (local_interfaces) {
721 103445 : struct interface *iface = local_interfaces;
722 103445 : DLIST_REMOVE(local_interfaces, local_interfaces);
723 103445 : SAFE_FREE(iface->name);
724 103530 : SAFE_FREE(iface);
725 : }
726 :
727 42295 : SAFE_FREE(probed_ifaces);
728 42295 : }
729 :
730 : /****************************************************************************
731 : Return True if the list of probed interfaces has changed.
732 : ****************************************************************************/
733 :
734 499 : bool interfaces_changed(void)
735 : {
736 499 : bool ret = false;
737 0 : int n;
738 499 : struct iface_struct *ifaces = NULL;
739 :
740 499 : n = get_interfaces(talloc_tos(), &ifaces);
741 :
742 499 : if ((n > 0 )&& (n != total_probed ||
743 499 : memcmp(ifaces, probed_ifaces, sizeof(ifaces[0])*n))) {
744 0 : ret = true;
745 : }
746 :
747 499 : TALLOC_FREE(ifaces);
748 499 : return ret;
749 : }
750 :
751 : /****************************************************************************
752 : Return True if interface exists for given interface index and options
753 : **************************************************************************/
754 :
755 0 : bool interface_ifindex_exists_with_options(int if_index, uint32_t options)
756 : {
757 0 : struct interface *i = NULL;
758 :
759 0 : for (i = local_interfaces; i != NULL; i = i->next) {
760 0 : if ((i->if_index == if_index) && (i->options & options)) {
761 0 : return true;
762 : }
763 : }
764 :
765 0 : return false;
766 : }
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