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18#include "sysfs.h"
19#include "main.h"
20
21#include <linux/atomic.h>
22#include <linux/compiler.h>
23#include <linux/device.h>
24#include <linux/errno.h>
25#include <linux/fs.h>
26#include <linux/if.h>
27#include <linux/if_vlan.h>
28#include <linux/kernel.h>
29#include <linux/netdevice.h>
30#include <linux/printk.h>
31#include <linux/rculist.h>
32#include <linux/rcupdate.h>
33#include <linux/rtnetlink.h>
34#include <linux/slab.h>
35#include <linux/stat.h>
36#include <linux/stddef.h>
37#include <linux/string.h>
38#include <linux/stringify.h>
39
40#include "distributed-arp-table.h"
41#include "gateway_client.h"
42#include "gateway_common.h"
43#include "hard-interface.h"
44#include "network-coding.h"
45#include "packet.h"
46#include "soft-interface.h"
47
48static struct net_device *batadv_kobj_to_netdev(struct kobject *obj)
49{
50 struct device *dev = container_of(obj->parent, struct device, kobj);
51
52 return to_net_dev(dev);
53}
54
55static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj)
56{
57 struct net_device *net_dev = batadv_kobj_to_netdev(obj);
58
59 return netdev_priv(net_dev);
60}
61
62
63
64
65
66
67
68static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj)
69{
70
71
72
73 if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name))
74 return batadv_kobj_to_batpriv(obj);
75
76
77
78
79 return batadv_kobj_to_batpriv(obj->parent);
80}
81
82
83
84
85
86
87
88static struct batadv_softif_vlan *
89batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj)
90{
91 struct batadv_softif_vlan *vlan_tmp, *vlan = NULL;
92
93 rcu_read_lock();
94 hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) {
95 if (vlan_tmp->kobj != obj)
96 continue;
97
98 if (!atomic_inc_not_zero(&vlan_tmp->refcount))
99 continue;
100
101 vlan = vlan_tmp;
102 break;
103 }
104 rcu_read_unlock();
105
106 return vlan;
107}
108
109#define BATADV_UEV_TYPE_VAR "BATTYPE="
110#define BATADV_UEV_ACTION_VAR "BATACTION="
111#define BATADV_UEV_DATA_VAR "BATDATA="
112
113static char *batadv_uev_action_str[] = {
114 "add",
115 "del",
116 "change"
117};
118
119static char *batadv_uev_type_str[] = {
120 "gw"
121};
122
123
124#define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \
125struct batadv_attribute batadv_attr_vlan_##_name = { \
126 .attr = {.name = __stringify(_name), \
127 .mode = _mode }, \
128 .show = _show, \
129 .store = _store, \
130}
131
132
133#define BATADV_ATTR(_name, _mode, _show, _store) \
134struct batadv_attribute batadv_attr_##_name = { \
135 .attr = {.name = __stringify(_name), \
136 .mode = _mode }, \
137 .show = _show, \
138 .store = _store, \
139}
140
141#define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
142ssize_t batadv_store_##_name(struct kobject *kobj, \
143 struct attribute *attr, char *buff, \
144 size_t count) \
145{ \
146 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
147 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
148 \
149 return __batadv_store_bool_attr(buff, count, _post_func, attr, \
150 &bat_priv->_name, net_dev); \
151}
152
153#define BATADV_ATTR_SIF_SHOW_BOOL(_name) \
154ssize_t batadv_show_##_name(struct kobject *kobj, \
155 struct attribute *attr, char *buff) \
156{ \
157 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
158 \
159 return sprintf(buff, "%s\n", \
160 atomic_read(&bat_priv->_name) == 0 ? \
161 "disabled" : "enabled"); \
162} \
163
164
165
166
167#define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \
168 static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
169 static BATADV_ATTR_SIF_SHOW_BOOL(_name) \
170 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
171 batadv_store_##_name)
172
173#define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \
174ssize_t batadv_store_##_name(struct kobject *kobj, \
175 struct attribute *attr, char *buff, \
176 size_t count) \
177{ \
178 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
179 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
180 \
181 return __batadv_store_uint_attr(buff, count, _min, _max, \
182 _post_func, attr, \
183 &bat_priv->_var, net_dev); \
184}
185
186#define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
187ssize_t batadv_show_##_name(struct kobject *kobj, \
188 struct attribute *attr, char *buff) \
189{ \
190 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
191 \
192 return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \
193} \
194
195
196
197
198#define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\
199 static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\
200 static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
201 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
202 batadv_store_##_name)
203
204#define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
205ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \
206 struct attribute *attr, char *buff, \
207 size_t count) \
208{ \
209 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
210 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
211 kobj); \
212 size_t res = __batadv_store_bool_attr(buff, count, _post_func, \
213 attr, &vlan->_name, \
214 bat_priv->soft_iface); \
215 \
216 batadv_softif_vlan_free_ref(vlan); \
217 return res; \
218}
219
220#define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
221ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \
222 struct attribute *attr, char *buff) \
223{ \
224 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
225 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
226 kobj); \
227 size_t res = sprintf(buff, "%s\n", \
228 atomic_read(&vlan->_name) == 0 ? \
229 "disabled" : "enabled"); \
230 \
231 batadv_softif_vlan_free_ref(vlan); \
232 return res; \
233}
234
235
236#define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \
237 static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
238 static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
239 static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \
240 batadv_store_vlan_##_name)
241
242static int batadv_store_bool_attr(char *buff, size_t count,
243 struct net_device *net_dev,
244 const char *attr_name, atomic_t *attr)
245{
246 int enabled = -1;
247
248 if (buff[count - 1] == '\n')
249 buff[count - 1] = '\0';
250
251 if ((strncmp(buff, "1", 2) == 0) ||
252 (strncmp(buff, "enable", 7) == 0) ||
253 (strncmp(buff, "enabled", 8) == 0))
254 enabled = 1;
255
256 if ((strncmp(buff, "0", 2) == 0) ||
257 (strncmp(buff, "disable", 8) == 0) ||
258 (strncmp(buff, "disabled", 9) == 0))
259 enabled = 0;
260
261 if (enabled < 0) {
262 batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
263 attr_name, buff);
264 return -EINVAL;
265 }
266
267 if (atomic_read(attr) == enabled)
268 return count;
269
270 batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
271 atomic_read(attr) == 1 ? "enabled" : "disabled",
272 enabled == 1 ? "enabled" : "disabled");
273
274 atomic_set(attr, (unsigned int)enabled);
275 return count;
276}
277
278static inline ssize_t
279__batadv_store_bool_attr(char *buff, size_t count,
280 void (*post_func)(struct net_device *),
281 struct attribute *attr,
282 atomic_t *attr_store, struct net_device *net_dev)
283{
284 int ret;
285
286 ret = batadv_store_bool_attr(buff, count, net_dev, attr->name,
287 attr_store);
288 if (post_func && ret)
289 post_func(net_dev);
290
291 return ret;
292}
293
294static int batadv_store_uint_attr(const char *buff, size_t count,
295 struct net_device *net_dev,
296 const char *attr_name,
297 unsigned int min, unsigned int max,
298 atomic_t *attr)
299{
300 unsigned long uint_val;
301 int ret;
302
303 ret = kstrtoul(buff, 10, &uint_val);
304 if (ret) {
305 batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
306 attr_name, buff);
307 return -EINVAL;
308 }
309
310 if (uint_val < min) {
311 batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n",
312 attr_name, uint_val, min);
313 return -EINVAL;
314 }
315
316 if (uint_val > max) {
317 batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n",
318 attr_name, uint_val, max);
319 return -EINVAL;
320 }
321
322 if (atomic_read(attr) == uint_val)
323 return count;
324
325 batadv_info(net_dev, "%s: Changing from: %i to: %lu\n",
326 attr_name, atomic_read(attr), uint_val);
327
328 atomic_set(attr, uint_val);
329 return count;
330}
331
332static inline ssize_t
333__batadv_store_uint_attr(const char *buff, size_t count,
334 int min, int max,
335 void (*post_func)(struct net_device *),
336 const struct attribute *attr,
337 atomic_t *attr_store, struct net_device *net_dev)
338{
339 int ret;
340
341 ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max,
342 attr_store);
343 if (post_func && ret)
344 post_func(net_dev);
345
346 return ret;
347}
348
349static ssize_t batadv_show_bat_algo(struct kobject *kobj,
350 struct attribute *attr, char *buff)
351{
352 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
353
354 return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
355}
356
357static void batadv_post_gw_reselect(struct net_device *net_dev)
358{
359 struct batadv_priv *bat_priv = netdev_priv(net_dev);
360
361 batadv_gw_reselect(bat_priv);
362}
363
364static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr,
365 char *buff)
366{
367 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
368 int bytes_written;
369
370 switch (atomic_read(&bat_priv->gw_mode)) {
371 case BATADV_GW_MODE_CLIENT:
372 bytes_written = sprintf(buff, "%s\n",
373 BATADV_GW_MODE_CLIENT_NAME);
374 break;
375 case BATADV_GW_MODE_SERVER:
376 bytes_written = sprintf(buff, "%s\n",
377 BATADV_GW_MODE_SERVER_NAME);
378 break;
379 default:
380 bytes_written = sprintf(buff, "%s\n",
381 BATADV_GW_MODE_OFF_NAME);
382 break;
383 }
384
385 return bytes_written;
386}
387
388static ssize_t batadv_store_gw_mode(struct kobject *kobj,
389 struct attribute *attr, char *buff,
390 size_t count)
391{
392 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
393 struct batadv_priv *bat_priv = netdev_priv(net_dev);
394 char *curr_gw_mode_str;
395 int gw_mode_tmp = -1;
396
397 if (buff[count - 1] == '\n')
398 buff[count - 1] = '\0';
399
400 if (strncmp(buff, BATADV_GW_MODE_OFF_NAME,
401 strlen(BATADV_GW_MODE_OFF_NAME)) == 0)
402 gw_mode_tmp = BATADV_GW_MODE_OFF;
403
404 if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME,
405 strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0)
406 gw_mode_tmp = BATADV_GW_MODE_CLIENT;
407
408 if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME,
409 strlen(BATADV_GW_MODE_SERVER_NAME)) == 0)
410 gw_mode_tmp = BATADV_GW_MODE_SERVER;
411
412 if (gw_mode_tmp < 0) {
413 batadv_info(net_dev,
414 "Invalid parameter for 'gw mode' setting received: %s\n",
415 buff);
416 return -EINVAL;
417 }
418
419 if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
420 return count;
421
422 switch (atomic_read(&bat_priv->gw_mode)) {
423 case BATADV_GW_MODE_CLIENT:
424 curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME;
425 break;
426 case BATADV_GW_MODE_SERVER:
427 curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME;
428 break;
429 default:
430 curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME;
431 break;
432 }
433
434 batadv_info(net_dev, "Changing gw mode from: %s to: %s\n",
435 curr_gw_mode_str, buff);
436
437
438
439
440
441
442
443
444
445
446 batadv_gw_reselect(bat_priv);
447
448
449
450 batadv_gw_check_client_stop(bat_priv);
451 atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
452 batadv_gw_tvlv_container_update(bat_priv);
453 return count;
454}
455
456static ssize_t batadv_show_gw_bwidth(struct kobject *kobj,
457 struct attribute *attr, char *buff)
458{
459 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
460 u32 down, up;
461
462 down = atomic_read(&bat_priv->gw.bandwidth_down);
463 up = atomic_read(&bat_priv->gw.bandwidth_up);
464
465 return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10,
466 down % 10, up / 10, up % 10);
467}
468
469static ssize_t batadv_store_gw_bwidth(struct kobject *kobj,
470 struct attribute *attr, char *buff,
471 size_t count)
472{
473 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
474
475 if (buff[count - 1] == '\n')
476 buff[count - 1] = '\0';
477
478 return batadv_gw_bandwidth_set(net_dev, buff, count);
479}
480
481
482
483
484
485
486
487
488
489
490static ssize_t batadv_show_isolation_mark(struct kobject *kobj,
491 struct attribute *attr, char *buff)
492{
493 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
494
495 return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark,
496 bat_priv->isolation_mark_mask);
497}
498
499
500
501
502
503
504
505
506
507
508
509static ssize_t batadv_store_isolation_mark(struct kobject *kobj,
510 struct attribute *attr, char *buff,
511 size_t count)
512{
513 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
514 struct batadv_priv *bat_priv = netdev_priv(net_dev);
515 u32 mark, mask;
516 char *mask_ptr;
517
518
519
520
521 mask = 0xFFFFFFFF;
522 mask_ptr = strchr(buff, '/');
523 if (mask_ptr) {
524 *mask_ptr = '\0';
525 mask_ptr++;
526
527
528
529
530 if (kstrtou32(mask_ptr, 16, &mask) < 0)
531 return -EINVAL;
532 }
533
534
535 if (kstrtou32(buff, 0, &mark) < 0)
536 return -EINVAL;
537
538 bat_priv->isolation_mark_mask = mask;
539
540 bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask;
541
542 batadv_info(net_dev,
543 "New skb mark for extended isolation: %#.8x/%#.8x\n",
544 bat_priv->isolation_mark, bat_priv->isolation_mark_mask);
545
546 return count;
547}
548
549BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
550BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
551#ifdef CONFIG_BATMAN_ADV_BLA
552BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL);
553#endif
554#ifdef CONFIG_BATMAN_ADV_DAT
555BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR,
556 batadv_dat_status_update);
557#endif
558BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu);
559static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL);
560static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode,
561 batadv_store_gw_mode);
562BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, S_IRUGO | S_IWUSR,
563 2 * BATADV_JITTER, INT_MAX, NULL);
564BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, S_IRUGO | S_IWUSR, 0,
565 BATADV_TQ_MAX_VALUE, NULL);
566BATADV_ATTR_SIF_UINT(gw_sel_class, gw_sel_class, S_IRUGO | S_IWUSR, 1,
567 BATADV_TQ_MAX_VALUE, batadv_post_gw_reselect);
568static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
569 batadv_store_gw_bwidth);
570#ifdef CONFIG_BATMAN_ADV_MCAST
571BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL);
572#endif
573#ifdef CONFIG_BATMAN_ADV_DEBUG
574BATADV_ATTR_SIF_UINT(log_level, log_level, S_IRUGO | S_IWUSR, 0,
575 BATADV_DBG_ALL, NULL);
576#endif
577#ifdef CONFIG_BATMAN_ADV_NC
578BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR,
579 batadv_nc_status_update);
580#endif
581static BATADV_ATTR(isolation_mark, S_IRUGO | S_IWUSR,
582 batadv_show_isolation_mark, batadv_store_isolation_mark);
583
584static struct batadv_attribute *batadv_mesh_attrs[] = {
585 &batadv_attr_aggregated_ogms,
586 &batadv_attr_bonding,
587#ifdef CONFIG_BATMAN_ADV_BLA
588 &batadv_attr_bridge_loop_avoidance,
589#endif
590#ifdef CONFIG_BATMAN_ADV_DAT
591 &batadv_attr_distributed_arp_table,
592#endif
593#ifdef CONFIG_BATMAN_ADV_MCAST
594 &batadv_attr_multicast_mode,
595#endif
596 &batadv_attr_fragmentation,
597 &batadv_attr_routing_algo,
598 &batadv_attr_gw_mode,
599 &batadv_attr_orig_interval,
600 &batadv_attr_hop_penalty,
601 &batadv_attr_gw_sel_class,
602 &batadv_attr_gw_bandwidth,
603#ifdef CONFIG_BATMAN_ADV_DEBUG
604 &batadv_attr_log_level,
605#endif
606#ifdef CONFIG_BATMAN_ADV_NC
607 &batadv_attr_network_coding,
608#endif
609 &batadv_attr_isolation_mark,
610 NULL,
611};
612
613BATADV_ATTR_VLAN_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
614
615
616
617
618static struct batadv_attribute *batadv_vlan_attrs[] = {
619 &batadv_attr_vlan_ap_isolation,
620 NULL,
621};
622
623int batadv_sysfs_add_meshif(struct net_device *dev)
624{
625 struct kobject *batif_kobject = &dev->dev.kobj;
626 struct batadv_priv *bat_priv = netdev_priv(dev);
627 struct batadv_attribute **bat_attr;
628 int err;
629
630 bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR,
631 batif_kobject);
632 if (!bat_priv->mesh_obj) {
633 batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
634 BATADV_SYSFS_IF_MESH_SUBDIR);
635 goto out;
636 }
637
638 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) {
639 err = sysfs_create_file(bat_priv->mesh_obj,
640 &((*bat_attr)->attr));
641 if (err) {
642 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
643 dev->name, BATADV_SYSFS_IF_MESH_SUBDIR,
644 ((*bat_attr)->attr).name);
645 goto rem_attr;
646 }
647 }
648
649 return 0;
650
651rem_attr:
652 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr)
653 sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
654
655 kobject_put(bat_priv->mesh_obj);
656 bat_priv->mesh_obj = NULL;
657out:
658 return -ENOMEM;
659}
660
661void batadv_sysfs_del_meshif(struct net_device *dev)
662{
663 struct batadv_priv *bat_priv = netdev_priv(dev);
664 struct batadv_attribute **bat_attr;
665
666 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr)
667 sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
668
669 kobject_put(bat_priv->mesh_obj);
670 bat_priv->mesh_obj = NULL;
671}
672
673
674
675
676
677
678
679
680int batadv_sysfs_add_vlan(struct net_device *dev,
681 struct batadv_softif_vlan *vlan)
682{
683 char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5];
684 struct batadv_priv *bat_priv = netdev_priv(dev);
685 struct batadv_attribute **bat_attr;
686 int err;
687
688 if (vlan->vid & BATADV_VLAN_HAS_TAG) {
689 sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu",
690 vlan->vid & VLAN_VID_MASK);
691
692 vlan->kobj = kobject_create_and_add(vlan_subdir,
693 bat_priv->mesh_obj);
694 if (!vlan->kobj) {
695 batadv_err(dev, "Can't add sysfs directory: %s/%s\n",
696 dev->name, vlan_subdir);
697 goto out;
698 }
699 } else {
700
701
702
703 vlan->kobj = bat_priv->mesh_obj;
704 kobject_get(bat_priv->mesh_obj);
705 }
706
707 for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) {
708 err = sysfs_create_file(vlan->kobj,
709 &((*bat_attr)->attr));
710 if (err) {
711 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
712 dev->name, vlan_subdir,
713 ((*bat_attr)->attr).name);
714 goto rem_attr;
715 }
716 }
717
718 return 0;
719
720rem_attr:
721 for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr)
722 sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr));
723
724 kobject_put(vlan->kobj);
725 vlan->kobj = NULL;
726out:
727 return -ENOMEM;
728}
729
730
731
732
733
734
735void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
736 struct batadv_softif_vlan *vlan)
737{
738 struct batadv_attribute **bat_attr;
739
740 for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr)
741 sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr));
742
743 kobject_put(vlan->kobj);
744 vlan->kobj = NULL;
745}
746
747static ssize_t batadv_show_mesh_iface(struct kobject *kobj,
748 struct attribute *attr, char *buff)
749{
750 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
751 struct batadv_hard_iface *hard_iface;
752 ssize_t length;
753 const char *ifname;
754
755 hard_iface = batadv_hardif_get_by_netdev(net_dev);
756 if (!hard_iface)
757 return 0;
758
759 if (hard_iface->if_status == BATADV_IF_NOT_IN_USE)
760 ifname = "none";
761 else
762 ifname = hard_iface->soft_iface->name;
763
764 length = sprintf(buff, "%s\n", ifname);
765
766 batadv_hardif_free_ref(hard_iface);
767
768 return length;
769}
770
771static ssize_t batadv_store_mesh_iface(struct kobject *kobj,
772 struct attribute *attr, char *buff,
773 size_t count)
774{
775 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
776 struct batadv_hard_iface *hard_iface;
777 int status_tmp = -1;
778 int ret = count;
779
780 hard_iface = batadv_hardif_get_by_netdev(net_dev);
781 if (!hard_iface)
782 return count;
783
784 if (buff[count - 1] == '\n')
785 buff[count - 1] = '\0';
786
787 if (strlen(buff) >= IFNAMSIZ) {
788 pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n",
789 buff);
790 batadv_hardif_free_ref(hard_iface);
791 return -EINVAL;
792 }
793
794 if (strncmp(buff, "none", 4) == 0)
795 status_tmp = BATADV_IF_NOT_IN_USE;
796 else
797 status_tmp = BATADV_IF_I_WANT_YOU;
798
799 if (hard_iface->if_status == status_tmp)
800 goto out;
801
802 if ((hard_iface->soft_iface) &&
803 (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
804 goto out;
805
806 rtnl_lock();
807
808 if (status_tmp == BATADV_IF_NOT_IN_USE) {
809 batadv_hardif_disable_interface(hard_iface,
810 BATADV_IF_CLEANUP_AUTO);
811 goto unlock;
812 }
813
814
815 if (hard_iface->if_status != BATADV_IF_NOT_IN_USE)
816 batadv_hardif_disable_interface(hard_iface,
817 BATADV_IF_CLEANUP_AUTO);
818
819 ret = batadv_hardif_enable_interface(hard_iface, buff);
820
821unlock:
822 rtnl_unlock();
823out:
824 batadv_hardif_free_ref(hard_iface);
825 return ret;
826}
827
828static ssize_t batadv_show_iface_status(struct kobject *kobj,
829 struct attribute *attr, char *buff)
830{
831 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
832 struct batadv_hard_iface *hard_iface;
833 ssize_t length;
834
835 hard_iface = batadv_hardif_get_by_netdev(net_dev);
836 if (!hard_iface)
837 return 0;
838
839 switch (hard_iface->if_status) {
840 case BATADV_IF_TO_BE_REMOVED:
841 length = sprintf(buff, "disabling\n");
842 break;
843 case BATADV_IF_INACTIVE:
844 length = sprintf(buff, "inactive\n");
845 break;
846 case BATADV_IF_ACTIVE:
847 length = sprintf(buff, "active\n");
848 break;
849 case BATADV_IF_TO_BE_ACTIVATED:
850 length = sprintf(buff, "enabling\n");
851 break;
852 case BATADV_IF_NOT_IN_USE:
853 default:
854 length = sprintf(buff, "not in use\n");
855 break;
856 }
857
858 batadv_hardif_free_ref(hard_iface);
859
860 return length;
861}
862
863static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface,
864 batadv_store_mesh_iface);
865static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL);
866
867static struct batadv_attribute *batadv_batman_attrs[] = {
868 &batadv_attr_mesh_iface,
869 &batadv_attr_iface_status,
870 NULL,
871};
872
873int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
874{
875 struct kobject *hardif_kobject = &dev->dev.kobj;
876 struct batadv_attribute **bat_attr;
877 int err;
878
879 *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR,
880 hardif_kobject);
881
882 if (!*hardif_obj) {
883 batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
884 BATADV_SYSFS_IF_BAT_SUBDIR);
885 goto out;
886 }
887
888 for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) {
889 err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
890 if (err) {
891 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
892 dev->name, BATADV_SYSFS_IF_BAT_SUBDIR,
893 ((*bat_attr)->attr).name);
894 goto rem_attr;
895 }
896 }
897
898 return 0;
899
900rem_attr:
901 for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr)
902 sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
903out:
904 return -ENOMEM;
905}
906
907void batadv_sysfs_del_hardif(struct kobject **hardif_obj)
908{
909 kobject_put(*hardif_obj);
910 *hardif_obj = NULL;
911}
912
913int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type,
914 enum batadv_uev_action action, const char *data)
915{
916 int ret = -ENOMEM;
917 struct kobject *bat_kobj;
918 char *uevent_env[4] = { NULL, NULL, NULL, NULL };
919
920 bat_kobj = &bat_priv->soft_iface->dev.kobj;
921
922 uevent_env[0] = kasprintf(GFP_ATOMIC,
923 "%s%s", BATADV_UEV_TYPE_VAR,
924 batadv_uev_type_str[type]);
925 if (!uevent_env[0])
926 goto out;
927
928 uevent_env[1] = kasprintf(GFP_ATOMIC,
929 "%s%s", BATADV_UEV_ACTION_VAR,
930 batadv_uev_action_str[action]);
931 if (!uevent_env[1])
932 goto out;
933
934
935 if (action != BATADV_UEV_DEL) {
936 uevent_env[2] = kasprintf(GFP_ATOMIC,
937 "%s%s", BATADV_UEV_DATA_VAR, data);
938 if (!uevent_env[2])
939 goto out;
940 }
941
942 ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
943out:
944 kfree(uevent_env[0]);
945 kfree(uevent_env[1]);
946 kfree(uevent_env[2]);
947
948 if (ret)
949 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
950 "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
951 batadv_uev_type_str[type],
952 batadv_uev_action_str[action],
953 (action == BATADV_UEV_DEL ? "NULL" : data), ret);
954 return ret;
955}
956
