swconfig: swlib.c: free device name and alias
[openwrt/svn-archive/archive.git] / package / network / config / swconfig / src / swlib.c
1 /*
2 * swlib.c: Switch configuration API (user space part)
3 *
4 * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public License
8 * version 2.1 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16 #include <stdio.h>
17 #include <string.h>
18 #include <stdlib.h>
19 #include <inttypes.h>
20 #include <errno.h>
21 #include <stdint.h>
22 #include <getopt.h>
23 #include <sys/types.h>
24 #include <sys/socket.h>
25 #include <linux/switch.h>
26 #include "swlib.h"
27 #include <netlink/netlink.h>
28 #include <netlink/genl/genl.h>
29 #include <netlink/genl/family.h>
30
31 //#define DEBUG 1
32 #ifdef DEBUG
33 #define DPRINTF(fmt, ...) fprintf(stderr, "%s(%d): " fmt, __func__, __LINE__, ##__VA_ARGS__)
34 #else
35 #define DPRINTF(fmt, ...) do {} while (0)
36 #endif
37
38 static struct nl_sock *handle;
39 static struct nl_cache *cache;
40 static struct genl_family *family;
41 static struct nlattr *tb[SWITCH_ATTR_MAX + 1];
42 static int refcount = 0;
43
44 static struct nla_policy port_policy[SWITCH_ATTR_MAX] = {
45 [SWITCH_PORT_ID] = { .type = NLA_U32 },
46 [SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
47 };
48
49 static struct nla_policy portmap_policy[SWITCH_PORTMAP_MAX] = {
50 [SWITCH_PORTMAP_SEGMENT] = { .type = NLA_STRING },
51 [SWITCH_PORTMAP_VIRT] = { .type = NLA_U32 },
52 };
53
54 static inline void *
55 swlib_alloc(size_t size)
56 {
57 void *ptr;
58
59 ptr = malloc(size);
60 if (!ptr)
61 goto done;
62 memset(ptr, 0, size);
63
64 done:
65 return ptr;
66 }
67
68 static int
69 wait_handler(struct nl_msg *msg, void *arg)
70 {
71 int *finished = arg;
72
73 *finished = 1;
74 return NL_STOP;
75 }
76
77 /* helper function for performing netlink requests */
78 static int
79 swlib_call(int cmd, int (*call)(struct nl_msg *, void *),
80 int (*data)(struct nl_msg *, void *), void *arg)
81 {
82 struct nl_msg *msg;
83 struct nl_cb *cb = NULL;
84 int finished;
85 int flags = 0;
86 int err;
87
88 msg = nlmsg_alloc();
89 if (!msg) {
90 fprintf(stderr, "Out of memory!\n");
91 exit(1);
92 }
93
94 if (!data)
95 flags |= NLM_F_DUMP;
96
97 genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, genl_family_get_id(family), 0, flags, cmd, 0);
98 if (data) {
99 if (data(msg, arg) < 0)
100 goto nla_put_failure;
101 }
102
103 cb = nl_cb_alloc(NL_CB_CUSTOM);
104 if (!cb) {
105 fprintf(stderr, "nl_cb_alloc failed.\n");
106 exit(1);
107 }
108
109 err = nl_send_auto_complete(handle, msg);
110 if (err < 0) {
111 fprintf(stderr, "nl_send_auto_complete failed: %d\n", err);
112 goto out;
113 }
114
115 finished = 0;
116
117 if (call)
118 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, call, arg);
119
120 if (data)
121 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, wait_handler, &finished);
122 else
123 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, wait_handler, &finished);
124
125 err = nl_recvmsgs(handle, cb);
126 if (err < 0) {
127 goto out;
128 }
129
130 if (!finished)
131 err = nl_wait_for_ack(handle);
132
133 out:
134 if (cb)
135 nl_cb_put(cb);
136 nla_put_failure:
137 nlmsg_free(msg);
138 return err;
139 }
140
141 static int
142 send_attr(struct nl_msg *msg, void *arg)
143 {
144 struct switch_val *val = arg;
145 struct switch_attr *attr = val->attr;
146
147 NLA_PUT_U32(msg, SWITCH_ATTR_ID, attr->dev->id);
148 NLA_PUT_U32(msg, SWITCH_ATTR_OP_ID, attr->id);
149 switch(attr->atype) {
150 case SWLIB_ATTR_GROUP_PORT:
151 NLA_PUT_U32(msg, SWITCH_ATTR_OP_PORT, val->port_vlan);
152 break;
153 case SWLIB_ATTR_GROUP_VLAN:
154 NLA_PUT_U32(msg, SWITCH_ATTR_OP_VLAN, val->port_vlan);
155 break;
156 default:
157 break;
158 }
159
160 return 0;
161
162 nla_put_failure:
163 return -1;
164 }
165
166 static int
167 store_port_val(struct nl_msg *msg, struct nlattr *nla, struct switch_val *val)
168 {
169 struct nlattr *p;
170 int ports = val->attr->dev->ports;
171 int err = 0;
172 int remaining;
173
174 if (!val->value.ports)
175 val->value.ports = malloc(sizeof(struct switch_port) * ports);
176
177 nla_for_each_nested(p, nla, remaining) {
178 struct nlattr *tb[SWITCH_PORT_ATTR_MAX+1];
179 struct switch_port *port;
180
181 if (val->len >= ports)
182 break;
183
184 err = nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, p, port_policy);
185 if (err < 0)
186 goto out;
187
188 if (!tb[SWITCH_PORT_ID])
189 continue;
190
191 port = &val->value.ports[val->len];
192 port->id = nla_get_u32(tb[SWITCH_PORT_ID]);
193 port->flags = 0;
194 if (tb[SWITCH_PORT_FLAG_TAGGED])
195 port->flags |= SWLIB_PORT_FLAG_TAGGED;
196
197 val->len++;
198 }
199
200 out:
201 return err;
202 }
203
204 static int
205 store_val(struct nl_msg *msg, void *arg)
206 {
207 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
208 struct switch_val *val = arg;
209
210 if (!val)
211 goto error;
212
213 if (nla_parse(tb, SWITCH_ATTR_MAX - 1, genlmsg_attrdata(gnlh, 0),
214 genlmsg_attrlen(gnlh, 0), NULL) < 0) {
215 goto error;
216 }
217
218 if (tb[SWITCH_ATTR_OP_VALUE_INT])
219 val->value.i = nla_get_u32(tb[SWITCH_ATTR_OP_VALUE_INT]);
220 else if (tb[SWITCH_ATTR_OP_VALUE_STR])
221 val->value.s = strdup(nla_get_string(tb[SWITCH_ATTR_OP_VALUE_STR]));
222 else if (tb[SWITCH_ATTR_OP_VALUE_PORTS])
223 val->err = store_port_val(msg, tb[SWITCH_ATTR_OP_VALUE_PORTS], val);
224
225 val->err = 0;
226 return 0;
227
228 error:
229 return NL_SKIP;
230 }
231
232 int
233 swlib_get_attr(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
234 {
235 int cmd;
236 int err;
237
238 switch(attr->atype) {
239 case SWLIB_ATTR_GROUP_GLOBAL:
240 cmd = SWITCH_CMD_GET_GLOBAL;
241 break;
242 case SWLIB_ATTR_GROUP_PORT:
243 cmd = SWITCH_CMD_GET_PORT;
244 break;
245 case SWLIB_ATTR_GROUP_VLAN:
246 cmd = SWITCH_CMD_GET_VLAN;
247 break;
248 default:
249 return -EINVAL;
250 }
251
252 memset(&val->value, 0, sizeof(val->value));
253 val->len = 0;
254 val->attr = attr;
255 val->err = -EINVAL;
256 err = swlib_call(cmd, store_val, send_attr, val);
257 if (!err)
258 err = val->err;
259
260 return err;
261 }
262
263 static int
264 send_attr_ports(struct nl_msg *msg, struct switch_val *val)
265 {
266 struct nlattr *n;
267 int i;
268
269 /* TODO implement multipart? */
270 if (val->len == 0)
271 goto done;
272 n = nla_nest_start(msg, SWITCH_ATTR_OP_VALUE_PORTS);
273 if (!n)
274 goto nla_put_failure;
275 for (i = 0; i < val->len; i++) {
276 struct switch_port *port = &val->value.ports[i];
277 struct nlattr *np;
278
279 np = nla_nest_start(msg, SWITCH_ATTR_PORT);
280 if (!np)
281 goto nla_put_failure;
282
283 NLA_PUT_U32(msg, SWITCH_PORT_ID, port->id);
284 if (port->flags & SWLIB_PORT_FLAG_TAGGED)
285 NLA_PUT_FLAG(msg, SWITCH_PORT_FLAG_TAGGED);
286
287 nla_nest_end(msg, np);
288 }
289 nla_nest_end(msg, n);
290 done:
291 return 0;
292
293 nla_put_failure:
294 return -1;
295 }
296
297 static int
298 send_attr_val(struct nl_msg *msg, void *arg)
299 {
300 struct switch_val *val = arg;
301 struct switch_attr *attr = val->attr;
302
303 if (send_attr(msg, arg))
304 goto nla_put_failure;
305
306 switch(attr->type) {
307 case SWITCH_TYPE_NOVAL:
308 break;
309 case SWITCH_TYPE_INT:
310 NLA_PUT_U32(msg, SWITCH_ATTR_OP_VALUE_INT, val->value.i);
311 break;
312 case SWITCH_TYPE_STRING:
313 if (!val->value.s)
314 goto nla_put_failure;
315 NLA_PUT_STRING(msg, SWITCH_ATTR_OP_VALUE_STR, val->value.s);
316 break;
317 case SWITCH_TYPE_PORTS:
318 if (send_attr_ports(msg, val) < 0)
319 goto nla_put_failure;
320 break;
321 default:
322 goto nla_put_failure;
323 }
324 return 0;
325
326 nla_put_failure:
327 return -1;
328 }
329
330 int
331 swlib_set_attr(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
332 {
333 int cmd;
334
335 switch(attr->atype) {
336 case SWLIB_ATTR_GROUP_GLOBAL:
337 cmd = SWITCH_CMD_SET_GLOBAL;
338 break;
339 case SWLIB_ATTR_GROUP_PORT:
340 cmd = SWITCH_CMD_SET_PORT;
341 break;
342 case SWLIB_ATTR_GROUP_VLAN:
343 cmd = SWITCH_CMD_SET_VLAN;
344 break;
345 default:
346 return -EINVAL;
347 }
348
349 val->attr = attr;
350 return swlib_call(cmd, NULL, send_attr_val, val);
351 }
352
353 int swlib_set_attr_string(struct switch_dev *dev, struct switch_attr *a, int port_vlan, const char *str)
354 {
355 struct switch_port *ports;
356 struct switch_val val;
357 char *ptr;
358
359 memset(&val, 0, sizeof(val));
360 val.port_vlan = port_vlan;
361 switch(a->type) {
362 case SWITCH_TYPE_INT:
363 val.value.i = atoi(str);
364 break;
365 case SWITCH_TYPE_STRING:
366 val.value.s = str;
367 break;
368 case SWITCH_TYPE_PORTS:
369 ports = alloca(sizeof(struct switch_port) * dev->ports);
370 memset(ports, 0, sizeof(struct switch_port) * dev->ports);
371 val.len = 0;
372 ptr = (char *)str;
373 while(ptr && *ptr)
374 {
375 while(*ptr && isspace(*ptr))
376 ptr++;
377
378 if (!*ptr)
379 break;
380
381 if (!isdigit(*ptr))
382 return -1;
383
384 if (val.len >= dev->ports)
385 return -1;
386
387 ports[val.len].flags = 0;
388 ports[val.len].id = strtoul(ptr, &ptr, 10);
389 while(*ptr && !isspace(*ptr)) {
390 if (*ptr == 't')
391 ports[val.len].flags |= SWLIB_PORT_FLAG_TAGGED;
392 else
393 return -1;
394
395 ptr++;
396 }
397 if (*ptr)
398 ptr++;
399 val.len++;
400 }
401 val.value.ports = ports;
402 break;
403 case SWITCH_TYPE_NOVAL:
404 if (str && !strcmp(str, "0"))
405 return 0;
406
407 break;
408 default:
409 return -1;
410 }
411 return swlib_set_attr(dev, a, &val);
412 }
413
414
415 struct attrlist_arg {
416 int id;
417 int atype;
418 struct switch_dev *dev;
419 struct switch_attr *prev;
420 struct switch_attr **head;
421 };
422
423 static int
424 add_id(struct nl_msg *msg, void *arg)
425 {
426 struct attrlist_arg *l = arg;
427
428 NLA_PUT_U32(msg, SWITCH_ATTR_ID, l->id);
429
430 return 0;
431 nla_put_failure:
432 return -1;
433 }
434
435 static int
436 add_attr(struct nl_msg *msg, void *ptr)
437 {
438 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
439 struct attrlist_arg *arg = ptr;
440 struct switch_attr *new;
441
442 if (nla_parse(tb, SWITCH_ATTR_MAX - 1, genlmsg_attrdata(gnlh, 0),
443 genlmsg_attrlen(gnlh, 0), NULL) < 0)
444 goto done;
445
446 new = swlib_alloc(sizeof(struct switch_attr));
447 if (!new)
448 goto done;
449
450 new->dev = arg->dev;
451 new->atype = arg->atype;
452 if (arg->prev) {
453 arg->prev->next = new;
454 } else {
455 arg->prev = *arg->head;
456 }
457 *arg->head = new;
458 arg->head = &new->next;
459
460 if (tb[SWITCH_ATTR_OP_ID])
461 new->id = nla_get_u32(tb[SWITCH_ATTR_OP_ID]);
462 if (tb[SWITCH_ATTR_OP_TYPE])
463 new->type = nla_get_u32(tb[SWITCH_ATTR_OP_TYPE]);
464 if (tb[SWITCH_ATTR_OP_NAME])
465 new->name = strdup(nla_get_string(tb[SWITCH_ATTR_OP_NAME]));
466 if (tb[SWITCH_ATTR_OP_DESCRIPTION])
467 new->description = strdup(nla_get_string(tb[SWITCH_ATTR_OP_DESCRIPTION]));
468
469 done:
470 return NL_SKIP;
471 }
472
473 int
474 swlib_scan(struct switch_dev *dev)
475 {
476 struct attrlist_arg arg;
477
478 if (dev->ops || dev->port_ops || dev->vlan_ops)
479 return 0;
480
481 arg.atype = SWLIB_ATTR_GROUP_GLOBAL;
482 arg.dev = dev;
483 arg.id = dev->id;
484 arg.prev = NULL;
485 arg.head = &dev->ops;
486 swlib_call(SWITCH_CMD_LIST_GLOBAL, add_attr, add_id, &arg);
487
488 arg.atype = SWLIB_ATTR_GROUP_PORT;
489 arg.prev = NULL;
490 arg.head = &dev->port_ops;
491 swlib_call(SWITCH_CMD_LIST_PORT, add_attr, add_id, &arg);
492
493 arg.atype = SWLIB_ATTR_GROUP_VLAN;
494 arg.prev = NULL;
495 arg.head = &dev->vlan_ops;
496 swlib_call(SWITCH_CMD_LIST_VLAN, add_attr, add_id, &arg);
497
498 return 0;
499 }
500
501 struct switch_attr *swlib_lookup_attr(struct switch_dev *dev,
502 enum swlib_attr_group atype, const char *name)
503 {
504 struct switch_attr *head;
505
506 if (!name || !dev)
507 return NULL;
508
509 switch(atype) {
510 case SWLIB_ATTR_GROUP_GLOBAL:
511 head = dev->ops;
512 break;
513 case SWLIB_ATTR_GROUP_PORT:
514 head = dev->port_ops;
515 break;
516 case SWLIB_ATTR_GROUP_VLAN:
517 head = dev->vlan_ops;
518 break;
519 }
520 while(head) {
521 if (!strcmp(name, head->name))
522 return head;
523 head = head->next;
524 }
525
526 return NULL;
527 }
528
529 static void
530 swlib_priv_free(void)
531 {
532 if (cache)
533 nl_cache_free(cache);
534 if (handle)
535 nl_socket_free(handle);
536 handle = NULL;
537 cache = NULL;
538 }
539
540 static int
541 swlib_priv_init(void)
542 {
543 int ret;
544
545 handle = nl_socket_alloc();
546 if (!handle) {
547 DPRINTF("Failed to create handle\n");
548 goto err;
549 }
550
551 if (genl_connect(handle)) {
552 DPRINTF("Failed to connect to generic netlink\n");
553 goto err;
554 }
555
556 ret = genl_ctrl_alloc_cache(handle, &cache);
557 if (ret < 0) {
558 DPRINTF("Failed to allocate netlink cache\n");
559 goto err;
560 }
561
562 family = genl_ctrl_search_by_name(cache, "switch");
563 if (!family) {
564 DPRINTF("Switch API not present\n");
565 goto err;
566 }
567 return 0;
568
569 err:
570 swlib_priv_free();
571 return -EINVAL;
572 }
573
574 struct swlib_scan_arg {
575 const char *name;
576 struct switch_dev *head;
577 struct switch_dev *ptr;
578 };
579
580 static int
581 add_port_map(struct switch_dev *dev, struct nlattr *nla)
582 {
583 struct nlattr *p;
584 int err = 0, idx = 0;
585 int remaining;
586
587 dev->maps = malloc(sizeof(struct switch_portmap) * dev->ports);
588 if (!dev->maps)
589 return -1;
590 memset(dev->maps, 0, sizeof(struct switch_portmap) * dev->ports);
591
592 nla_for_each_nested(p, nla, remaining) {
593 struct nlattr *tb[SWITCH_PORTMAP_MAX+1];
594
595 if (idx >= dev->ports)
596 continue;
597
598 err = nla_parse_nested(tb, SWITCH_PORTMAP_MAX, p, portmap_policy);
599 if (err < 0)
600 continue;
601
602
603 if (tb[SWITCH_PORTMAP_SEGMENT] && tb[SWITCH_PORTMAP_VIRT]) {
604 dev->maps[idx].segment = strdup(nla_get_string(tb[SWITCH_PORTMAP_SEGMENT]));
605 dev->maps[idx].virt = nla_get_u32(tb[SWITCH_PORTMAP_VIRT]);
606 }
607 idx++;
608 }
609
610 out:
611 return err;
612 }
613
614
615 static int
616 add_switch(struct nl_msg *msg, void *arg)
617 {
618 struct swlib_scan_arg *sa = arg;
619 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
620 struct switch_dev *dev;
621 const char *name;
622 const char *alias;
623
624 if (nla_parse(tb, SWITCH_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0)
625 goto done;
626
627 if (!tb[SWITCH_ATTR_DEV_NAME])
628 goto done;
629
630 name = nla_get_string(tb[SWITCH_ATTR_DEV_NAME]);
631 alias = nla_get_string(tb[SWITCH_ATTR_ALIAS]);
632
633 if (sa->name && (strcmp(name, sa->name) != 0) && (strcmp(alias, sa->name) != 0))
634 goto done;
635
636 dev = swlib_alloc(sizeof(struct switch_dev));
637 if (!dev)
638 goto done;
639
640 strncpy(dev->dev_name, name, IFNAMSIZ - 1);
641 dev->alias = strdup(alias);
642 if (tb[SWITCH_ATTR_ID])
643 dev->id = nla_get_u32(tb[SWITCH_ATTR_ID]);
644 if (tb[SWITCH_ATTR_NAME])
645 dev->name = strdup(nla_get_string(tb[SWITCH_ATTR_NAME]));
646 if (tb[SWITCH_ATTR_PORTS])
647 dev->ports = nla_get_u32(tb[SWITCH_ATTR_PORTS]);
648 if (tb[SWITCH_ATTR_VLANS])
649 dev->vlans = nla_get_u32(tb[SWITCH_ATTR_VLANS]);
650 if (tb[SWITCH_ATTR_CPU_PORT])
651 dev->cpu_port = nla_get_u32(tb[SWITCH_ATTR_CPU_PORT]);
652 if (tb[SWITCH_ATTR_PORTMAP])
653 add_port_map(dev, tb[SWITCH_ATTR_PORTMAP]);
654
655 if (!sa->head) {
656 sa->head = dev;
657 sa->ptr = dev;
658 } else {
659 sa->ptr->next = dev;
660 sa->ptr = dev;
661 }
662
663 refcount++;
664 done:
665 return NL_SKIP;
666 }
667
668 static int
669 list_switch(struct nl_msg *msg, void *arg)
670 {
671 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
672
673 if (nla_parse(tb, SWITCH_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0)
674 goto done;
675
676 if (!tb[SWITCH_ATTR_DEV_NAME] || !tb[SWITCH_ATTR_NAME])
677 goto done;
678
679 printf("Found: %s - %s\n", nla_get_string(tb[SWITCH_ATTR_DEV_NAME]),
680 nla_get_string(tb[SWITCH_ATTR_ALIAS]));
681
682 done:
683 return NL_SKIP;
684 }
685
686 void
687 swlib_list(void)
688 {
689 if (swlib_priv_init() < 0)
690 return;
691 swlib_call(SWITCH_CMD_GET_SWITCH, list_switch, NULL, NULL);
692 swlib_priv_free();
693 }
694
695 void
696 swlib_print_portmap(struct switch_dev *dev, char *segment)
697 {
698 int i;
699
700 if (segment) {
701 if (!strcmp(segment, "cpu")) {
702 printf("%d ", dev->cpu_port);
703 } else if (!strcmp(segment, "disabled")) {
704 for (i = 0; i < dev->ports; i++)
705 if (!dev->maps[i].segment)
706 printf("%d ", i);
707 } else for (i = 0; i < dev->ports; i++) {
708 if (dev->maps[i].segment && !strcmp(dev->maps[i].segment, segment))
709 printf("%d ", i);
710 }
711 } else {
712 printf("%s - %s\n", dev->dev_name, dev->name);
713 for (i = 0; i < dev->ports; i++)
714 if (i == dev->cpu_port)
715 printf("port%d:\tcpu\n", i);
716 else if (dev->maps[i].segment)
717 printf("port%d:\t%s.%d\n", i, dev->maps[i].segment, dev->maps[i].virt);
718 else
719 printf("port%d:\tdisabled\n", i);
720 }
721 }
722
723 struct switch_dev *
724 swlib_connect(const char *name)
725 {
726 struct swlib_scan_arg arg;
727
728 if (!refcount) {
729 if (swlib_priv_init() < 0)
730 return NULL;
731 };
732
733 arg.head = NULL;
734 arg.ptr = NULL;
735 arg.name = name;
736 swlib_call(SWITCH_CMD_GET_SWITCH, add_switch, NULL, &arg);
737
738 if (!refcount)
739 swlib_priv_free();
740
741 return arg.head;
742 }
743
744 static void
745 swlib_free_attributes(struct switch_attr **head)
746 {
747 struct switch_attr *a = *head;
748 struct switch_attr *next;
749
750 while (a) {
751 next = a->next;
752 free(a);
753 a = next;
754 }
755 *head = NULL;
756 }
757
758 void
759 swlib_free(struct switch_dev *dev)
760 {
761 swlib_free_attributes(&dev->ops);
762 swlib_free_attributes(&dev->port_ops);
763 swlib_free_attributes(&dev->vlan_ops);
764 free(dev->name);
765 free(dev->alias);
766 free(dev);
767
768 if (--refcount == 0)
769 swlib_priv_free();
770 }
771
772 void
773 swlib_free_all(struct switch_dev *dev)
774 {
775 struct switch_dev *p;
776
777 while (dev) {
778 p = dev->next;
779 swlib_free(dev);
780 dev = p;
781 }
782 }