1 /* Copyright (C) 2010-2013 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA
18 */
19
20 #include "main.h"
21 #include "sysfs.h"
22 #include "translation-table.h"
23 #include "distributed-arp-table.h"
24 #include "originator.h"
25 #include "hard-interface.h"
26 #include "gateway_common.h"
27 #include "gateway_client.h"
28 #include "vis.h"
29
batadv_kobj_to_netdev(struct kobject * obj)30 static struct net_device *batadv_kobj_to_netdev(struct kobject *obj)
31 {
32 struct device *dev = container_of(obj->parent, struct device, kobj);
33 return to_net_dev(dev);
34 }
35
batadv_kobj_to_batpriv(struct kobject * obj)36 static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj)
37 {
38 struct net_device *net_dev = batadv_kobj_to_netdev(obj);
39 return netdev_priv(net_dev);
40 }
41
42 #define BATADV_UEV_TYPE_VAR "BATTYPE="
43 #define BATADV_UEV_ACTION_VAR "BATACTION="
44 #define BATADV_UEV_DATA_VAR "BATDATA="
45
46 static char *batadv_uev_action_str[] = {
47 "add",
48 "del",
49 "change"
50 };
51
52 static char *batadv_uev_type_str[] = {
53 "gw"
54 };
55
56 /* Use this, if you have customized show and store functions */
57 #define BATADV_ATTR(_name, _mode, _show, _store) \
58 struct batadv_attribute batadv_attr_##_name = { \
59 .attr = {.name = __stringify(_name), \
60 .mode = _mode }, \
61 .show = _show, \
62 .store = _store, \
63 };
64
65 #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
66 ssize_t batadv_store_##_name(struct kobject *kobj, \
67 struct attribute *attr, char *buff, \
68 size_t count) \
69 { \
70 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
71 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
72 return __batadv_store_bool_attr(buff, count, _post_func, attr, \
73 &bat_priv->_name, net_dev); \
74 }
75
76 #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \
77 ssize_t batadv_show_##_name(struct kobject *kobj, \
78 struct attribute *attr, char *buff) \
79 { \
80 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
81 return sprintf(buff, "%s\n", \
82 atomic_read(&bat_priv->_name) == 0 ? \
83 "disabled" : "enabled"); \
84 } \
85
86 /* Use this, if you are going to turn a [name] in the soft-interface
87 * (bat_priv) on or off
88 */
89 #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \
90 static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
91 static BATADV_ATTR_SIF_SHOW_BOOL(_name) \
92 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
93 batadv_store_##_name)
94
95
96 #define BATADV_ATTR_SIF_STORE_UINT(_name, _min, _max, _post_func) \
97 ssize_t batadv_store_##_name(struct kobject *kobj, \
98 struct attribute *attr, char *buff, \
99 size_t count) \
100 { \
101 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
102 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
103 return __batadv_store_uint_attr(buff, count, _min, _max, \
104 _post_func, attr, \
105 &bat_priv->_name, net_dev); \
106 }
107
108 #define BATADV_ATTR_SIF_SHOW_UINT(_name) \
109 ssize_t batadv_show_##_name(struct kobject *kobj, \
110 struct attribute *attr, char *buff) \
111 { \
112 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
113 return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \
114 } \
115
116 /* Use this, if you are going to set [name] in the soft-interface
117 * (bat_priv) to an unsigned integer value
118 */
119 #define BATADV_ATTR_SIF_UINT(_name, _mode, _min, _max, _post_func) \
120 static BATADV_ATTR_SIF_STORE_UINT(_name, _min, _max, _post_func)\
121 static BATADV_ATTR_SIF_SHOW_UINT(_name) \
122 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
123 batadv_store_##_name)
124
125
batadv_store_bool_attr(char * buff,size_t count,struct net_device * net_dev,const char * attr_name,atomic_t * attr)126 static int batadv_store_bool_attr(char *buff, size_t count,
127 struct net_device *net_dev,
128 const char *attr_name, atomic_t *attr)
129 {
130 int enabled = -1;
131
132 if (buff[count - 1] == '\n')
133 buff[count - 1] = '\0';
134
135 if ((strncmp(buff, "1", 2) == 0) ||
136 (strncmp(buff, "enable", 7) == 0) ||
137 (strncmp(buff, "enabled", 8) == 0))
138 enabled = 1;
139
140 if ((strncmp(buff, "0", 2) == 0) ||
141 (strncmp(buff, "disable", 8) == 0) ||
142 (strncmp(buff, "disabled", 9) == 0))
143 enabled = 0;
144
145 if (enabled < 0) {
146 batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
147 attr_name, buff);
148 return -EINVAL;
149 }
150
151 if (atomic_read(attr) == enabled)
152 return count;
153
154 batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
155 atomic_read(attr) == 1 ? "enabled" : "disabled",
156 enabled == 1 ? "enabled" : "disabled");
157
158 atomic_set(attr, (unsigned int)enabled);
159 return count;
160 }
161
162 static inline ssize_t
__batadv_store_bool_attr(char * buff,size_t count,void (* post_func)(struct net_device *),struct attribute * attr,atomic_t * attr_store,struct net_device * net_dev)163 __batadv_store_bool_attr(char *buff, size_t count,
164 void (*post_func)(struct net_device *),
165 struct attribute *attr,
166 atomic_t *attr_store, struct net_device *net_dev)
167 {
168 int ret;
169
170 ret = batadv_store_bool_attr(buff, count, net_dev, attr->name,
171 attr_store);
172 if (post_func && ret)
173 post_func(net_dev);
174
175 return ret;
176 }
177
batadv_store_uint_attr(const char * buff,size_t count,struct net_device * net_dev,const char * attr_name,unsigned int min,unsigned int max,atomic_t * attr)178 static int batadv_store_uint_attr(const char *buff, size_t count,
179 struct net_device *net_dev,
180 const char *attr_name,
181 unsigned int min, unsigned int max,
182 atomic_t *attr)
183 {
184 unsigned long uint_val;
185 int ret;
186
187 ret = kstrtoul(buff, 10, &uint_val);
188 if (ret) {
189 batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
190 attr_name, buff);
191 return -EINVAL;
192 }
193
194 if (uint_val < min) {
195 batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n",
196 attr_name, uint_val, min);
197 return -EINVAL;
198 }
199
200 if (uint_val > max) {
201 batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n",
202 attr_name, uint_val, max);
203 return -EINVAL;
204 }
205
206 if (atomic_read(attr) == uint_val)
207 return count;
208
209 batadv_info(net_dev, "%s: Changing from: %i to: %lu\n",
210 attr_name, atomic_read(attr), uint_val);
211
212 atomic_set(attr, uint_val);
213 return count;
214 }
215
216 static inline ssize_t
__batadv_store_uint_attr(const char * buff,size_t count,int min,int max,void (* post_func)(struct net_device *),const struct attribute * attr,atomic_t * attr_store,struct net_device * net_dev)217 __batadv_store_uint_attr(const char *buff, size_t count,
218 int min, int max,
219 void (*post_func)(struct net_device *),
220 const struct attribute *attr,
221 atomic_t *attr_store, struct net_device *net_dev)
222 {
223 int ret;
224
225 ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max,
226 attr_store);
227 if (post_func && ret)
228 post_func(net_dev);
229
230 return ret;
231 }
232
batadv_show_vis_mode(struct kobject * kobj,struct attribute * attr,char * buff)233 static ssize_t batadv_show_vis_mode(struct kobject *kobj,
234 struct attribute *attr, char *buff)
235 {
236 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
237 int vis_mode = atomic_read(&bat_priv->vis_mode);
238 const char *mode;
239
240 if (vis_mode == BATADV_VIS_TYPE_CLIENT_UPDATE)
241 mode = "client";
242 else
243 mode = "server";
244
245 return sprintf(buff, "%s\n", mode);
246 }
247
batadv_store_vis_mode(struct kobject * kobj,struct attribute * attr,char * buff,size_t count)248 static ssize_t batadv_store_vis_mode(struct kobject *kobj,
249 struct attribute *attr, char *buff,
250 size_t count)
251 {
252 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
253 struct batadv_priv *bat_priv = netdev_priv(net_dev);
254 unsigned long val;
255 int ret, vis_mode_tmp = -1;
256 const char *old_mode, *new_mode;
257
258 ret = kstrtoul(buff, 10, &val);
259
260 if (((count == 2) && (!ret) &&
261 (val == BATADV_VIS_TYPE_CLIENT_UPDATE)) ||
262 (strncmp(buff, "client", 6) == 0) ||
263 (strncmp(buff, "off", 3) == 0))
264 vis_mode_tmp = BATADV_VIS_TYPE_CLIENT_UPDATE;
265
266 if (((count == 2) && (!ret) &&
267 (val == BATADV_VIS_TYPE_SERVER_SYNC)) ||
268 (strncmp(buff, "server", 6) == 0))
269 vis_mode_tmp = BATADV_VIS_TYPE_SERVER_SYNC;
270
271 if (vis_mode_tmp < 0) {
272 if (buff[count - 1] == '\n')
273 buff[count - 1] = '\0';
274
275 batadv_info(net_dev,
276 "Invalid parameter for 'vis mode' setting received: %s\n",
277 buff);
278 return -EINVAL;
279 }
280
281 if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
282 return count;
283
284 if (atomic_read(&bat_priv->vis_mode) == BATADV_VIS_TYPE_CLIENT_UPDATE)
285 old_mode = "client";
286 else
287 old_mode = "server";
288
289 if (vis_mode_tmp == BATADV_VIS_TYPE_CLIENT_UPDATE)
290 new_mode = "client";
291 else
292 new_mode = "server";
293
294 batadv_info(net_dev, "Changing vis mode from: %s to: %s\n", old_mode,
295 new_mode);
296
297 atomic_set(&bat_priv->vis_mode, (unsigned int)vis_mode_tmp);
298 return count;
299 }
300
batadv_show_bat_algo(struct kobject * kobj,struct attribute * attr,char * buff)301 static ssize_t batadv_show_bat_algo(struct kobject *kobj,
302 struct attribute *attr, char *buff)
303 {
304 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
305 return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
306 }
307
batadv_post_gw_deselect(struct net_device * net_dev)308 static void batadv_post_gw_deselect(struct net_device *net_dev)
309 {
310 struct batadv_priv *bat_priv = netdev_priv(net_dev);
311 batadv_gw_deselect(bat_priv);
312 }
313
batadv_show_gw_mode(struct kobject * kobj,struct attribute * attr,char * buff)314 static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr,
315 char *buff)
316 {
317 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
318 int bytes_written;
319
320 switch (atomic_read(&bat_priv->gw_mode)) {
321 case BATADV_GW_MODE_CLIENT:
322 bytes_written = sprintf(buff, "%s\n",
323 BATADV_GW_MODE_CLIENT_NAME);
324 break;
325 case BATADV_GW_MODE_SERVER:
326 bytes_written = sprintf(buff, "%s\n",
327 BATADV_GW_MODE_SERVER_NAME);
328 break;
329 default:
330 bytes_written = sprintf(buff, "%s\n",
331 BATADV_GW_MODE_OFF_NAME);
332 break;
333 }
334
335 return bytes_written;
336 }
337
batadv_store_gw_mode(struct kobject * kobj,struct attribute * attr,char * buff,size_t count)338 static ssize_t batadv_store_gw_mode(struct kobject *kobj,
339 struct attribute *attr, char *buff,
340 size_t count)
341 {
342 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
343 struct batadv_priv *bat_priv = netdev_priv(net_dev);
344 char *curr_gw_mode_str;
345 int gw_mode_tmp = -1;
346
347 if (buff[count - 1] == '\n')
348 buff[count - 1] = '\0';
349
350 if (strncmp(buff, BATADV_GW_MODE_OFF_NAME,
351 strlen(BATADV_GW_MODE_OFF_NAME)) == 0)
352 gw_mode_tmp = BATADV_GW_MODE_OFF;
353
354 if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME,
355 strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0)
356 gw_mode_tmp = BATADV_GW_MODE_CLIENT;
357
358 if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME,
359 strlen(BATADV_GW_MODE_SERVER_NAME)) == 0)
360 gw_mode_tmp = BATADV_GW_MODE_SERVER;
361
362 if (gw_mode_tmp < 0) {
363 batadv_info(net_dev,
364 "Invalid parameter for 'gw mode' setting received: %s\n",
365 buff);
366 return -EINVAL;
367 }
368
369 if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
370 return count;
371
372 switch (atomic_read(&bat_priv->gw_mode)) {
373 case BATADV_GW_MODE_CLIENT:
374 curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME;
375 break;
376 case BATADV_GW_MODE_SERVER:
377 curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME;
378 break;
379 default:
380 curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME;
381 break;
382 }
383
384 batadv_info(net_dev, "Changing gw mode from: %s to: %s\n",
385 curr_gw_mode_str, buff);
386
387 batadv_gw_deselect(bat_priv);
388 atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
389 return count;
390 }
391
batadv_show_gw_bwidth(struct kobject * kobj,struct attribute * attr,char * buff)392 static ssize_t batadv_show_gw_bwidth(struct kobject *kobj,
393 struct attribute *attr, char *buff)
394 {
395 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
396 int down, up;
397 int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);
398
399 batadv_gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
400 return sprintf(buff, "%i%s/%i%s\n",
401 (down > 2048 ? down / 1024 : down),
402 (down > 2048 ? "MBit" : "KBit"),
403 (up > 2048 ? up / 1024 : up),
404 (up > 2048 ? "MBit" : "KBit"));
405 }
406
batadv_store_gw_bwidth(struct kobject * kobj,struct attribute * attr,char * buff,size_t count)407 static ssize_t batadv_store_gw_bwidth(struct kobject *kobj,
408 struct attribute *attr, char *buff,
409 size_t count)
410 {
411 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
412
413 if (buff[count - 1] == '\n')
414 buff[count - 1] = '\0';
415
416 return batadv_gw_bandwidth_set(net_dev, buff, count);
417 }
418
419 BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
420 BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
421 #ifdef CONFIG_BATMAN_ADV_BLA
422 BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL);
423 #endif
424 #ifdef CONFIG_BATMAN_ADV_DAT
425 BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR, NULL);
426 #endif
427 BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu);
428 BATADV_ATTR_SIF_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
429 static BATADV_ATTR(vis_mode, S_IRUGO | S_IWUSR, batadv_show_vis_mode,
430 batadv_store_vis_mode);
431 static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL);
432 static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode,
433 batadv_store_gw_mode);
434 BATADV_ATTR_SIF_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * BATADV_JITTER,
435 INT_MAX, NULL);
436 BATADV_ATTR_SIF_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, BATADV_TQ_MAX_VALUE,
437 NULL);
438 BATADV_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, BATADV_TQ_MAX_VALUE,
439 batadv_post_gw_deselect);
440 static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
441 batadv_store_gw_bwidth);
442 #ifdef CONFIG_BATMAN_ADV_DEBUG
443 BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL);
444 #endif
445 #ifdef CONFIG_BATMAN_ADV_NC
446 BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR, NULL);
447 #endif
448
449 static struct batadv_attribute *batadv_mesh_attrs[] = {
450 &batadv_attr_aggregated_ogms,
451 &batadv_attr_bonding,
452 #ifdef CONFIG_BATMAN_ADV_BLA
453 &batadv_attr_bridge_loop_avoidance,
454 #endif
455 #ifdef CONFIG_BATMAN_ADV_DAT
456 &batadv_attr_distributed_arp_table,
457 #endif
458 &batadv_attr_fragmentation,
459 &batadv_attr_ap_isolation,
460 &batadv_attr_vis_mode,
461 &batadv_attr_routing_algo,
462 &batadv_attr_gw_mode,
463 &batadv_attr_orig_interval,
464 &batadv_attr_hop_penalty,
465 &batadv_attr_gw_sel_class,
466 &batadv_attr_gw_bandwidth,
467 #ifdef CONFIG_BATMAN_ADV_DEBUG
468 &batadv_attr_log_level,
469 #endif
470 #ifdef CONFIG_BATMAN_ADV_NC
471 &batadv_attr_network_coding,
472 #endif
473 NULL,
474 };
475
batadv_sysfs_add_meshif(struct net_device * dev)476 int batadv_sysfs_add_meshif(struct net_device *dev)
477 {
478 struct kobject *batif_kobject = &dev->dev.kobj;
479 struct batadv_priv *bat_priv = netdev_priv(dev);
480 struct batadv_attribute **bat_attr;
481 int err;
482
483 bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR,
484 batif_kobject);
485 if (!bat_priv->mesh_obj) {
486 batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
487 BATADV_SYSFS_IF_MESH_SUBDIR);
488 goto out;
489 }
490
491 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) {
492 err = sysfs_create_file(bat_priv->mesh_obj,
493 &((*bat_attr)->attr));
494 if (err) {
495 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
496 dev->name, BATADV_SYSFS_IF_MESH_SUBDIR,
497 ((*bat_attr)->attr).name);
498 goto rem_attr;
499 }
500 }
501
502 return 0;
503
504 rem_attr:
505 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr)
506 sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
507
508 kobject_put(bat_priv->mesh_obj);
509 bat_priv->mesh_obj = NULL;
510 out:
511 return -ENOMEM;
512 }
513
batadv_sysfs_del_meshif(struct net_device * dev)514 void batadv_sysfs_del_meshif(struct net_device *dev)
515 {
516 struct batadv_priv *bat_priv = netdev_priv(dev);
517 struct batadv_attribute **bat_attr;
518
519 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr)
520 sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
521
522 kobject_put(bat_priv->mesh_obj);
523 bat_priv->mesh_obj = NULL;
524 }
525
batadv_show_mesh_iface(struct kobject * kobj,struct attribute * attr,char * buff)526 static ssize_t batadv_show_mesh_iface(struct kobject *kobj,
527 struct attribute *attr, char *buff)
528 {
529 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
530 struct batadv_hard_iface *hard_iface;
531 ssize_t length;
532 const char *ifname;
533
534 hard_iface = batadv_hardif_get_by_netdev(net_dev);
535 if (!hard_iface)
536 return 0;
537
538 if (hard_iface->if_status == BATADV_IF_NOT_IN_USE)
539 ifname = "none";
540 else
541 ifname = hard_iface->soft_iface->name;
542
543 length = sprintf(buff, "%s\n", ifname);
544
545 batadv_hardif_free_ref(hard_iface);
546
547 return length;
548 }
549
batadv_store_mesh_iface(struct kobject * kobj,struct attribute * attr,char * buff,size_t count)550 static ssize_t batadv_store_mesh_iface(struct kobject *kobj,
551 struct attribute *attr, char *buff,
552 size_t count)
553 {
554 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
555 struct batadv_hard_iface *hard_iface;
556 int status_tmp = -1;
557 int ret = count;
558
559 hard_iface = batadv_hardif_get_by_netdev(net_dev);
560 if (!hard_iface)
561 return count;
562
563 if (buff[count - 1] == '\n')
564 buff[count - 1] = '\0';
565
566 if (strlen(buff) >= IFNAMSIZ) {
567 pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n",
568 buff);
569 batadv_hardif_free_ref(hard_iface);
570 return -EINVAL;
571 }
572
573 if (strncmp(buff, "none", 4) == 0)
574 status_tmp = BATADV_IF_NOT_IN_USE;
575 else
576 status_tmp = BATADV_IF_I_WANT_YOU;
577
578 if (hard_iface->if_status == status_tmp)
579 goto out;
580
581 if ((hard_iface->soft_iface) &&
582 (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
583 goto out;
584
585 rtnl_lock();
586
587 if (status_tmp == BATADV_IF_NOT_IN_USE) {
588 batadv_hardif_disable_interface(hard_iface,
589 BATADV_IF_CLEANUP_AUTO);
590 goto unlock;
591 }
592
593 /* if the interface already is in use */
594 if (hard_iface->if_status != BATADV_IF_NOT_IN_USE)
595 batadv_hardif_disable_interface(hard_iface,
596 BATADV_IF_CLEANUP_AUTO);
597
598 ret = batadv_hardif_enable_interface(hard_iface, buff);
599
600 unlock:
601 rtnl_unlock();
602 out:
603 batadv_hardif_free_ref(hard_iface);
604 return ret;
605 }
606
batadv_show_iface_status(struct kobject * kobj,struct attribute * attr,char * buff)607 static ssize_t batadv_show_iface_status(struct kobject *kobj,
608 struct attribute *attr, char *buff)
609 {
610 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
611 struct batadv_hard_iface *hard_iface;
612 ssize_t length;
613
614 hard_iface = batadv_hardif_get_by_netdev(net_dev);
615 if (!hard_iface)
616 return 0;
617
618 switch (hard_iface->if_status) {
619 case BATADV_IF_TO_BE_REMOVED:
620 length = sprintf(buff, "disabling\n");
621 break;
622 case BATADV_IF_INACTIVE:
623 length = sprintf(buff, "inactive\n");
624 break;
625 case BATADV_IF_ACTIVE:
626 length = sprintf(buff, "active\n");
627 break;
628 case BATADV_IF_TO_BE_ACTIVATED:
629 length = sprintf(buff, "enabling\n");
630 break;
631 case BATADV_IF_NOT_IN_USE:
632 default:
633 length = sprintf(buff, "not in use\n");
634 break;
635 }
636
637 batadv_hardif_free_ref(hard_iface);
638
639 return length;
640 }
641
642 static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface,
643 batadv_store_mesh_iface);
644 static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL);
645
646 static struct batadv_attribute *batadv_batman_attrs[] = {
647 &batadv_attr_mesh_iface,
648 &batadv_attr_iface_status,
649 NULL,
650 };
651
batadv_sysfs_add_hardif(struct kobject ** hardif_obj,struct net_device * dev)652 int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
653 {
654 struct kobject *hardif_kobject = &dev->dev.kobj;
655 struct batadv_attribute **bat_attr;
656 int err;
657
658 *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR,
659 hardif_kobject);
660
661 if (!*hardif_obj) {
662 batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
663 BATADV_SYSFS_IF_BAT_SUBDIR);
664 goto out;
665 }
666
667 for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) {
668 err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
669 if (err) {
670 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
671 dev->name, BATADV_SYSFS_IF_BAT_SUBDIR,
672 ((*bat_attr)->attr).name);
673 goto rem_attr;
674 }
675 }
676
677 return 0;
678
679 rem_attr:
680 for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr)
681 sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
682 out:
683 return -ENOMEM;
684 }
685
batadv_sysfs_del_hardif(struct kobject ** hardif_obj)686 void batadv_sysfs_del_hardif(struct kobject **hardif_obj)
687 {
688 kobject_put(*hardif_obj);
689 *hardif_obj = NULL;
690 }
691
batadv_throw_uevent(struct batadv_priv * bat_priv,enum batadv_uev_type type,enum batadv_uev_action action,const char * data)692 int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type,
693 enum batadv_uev_action action, const char *data)
694 {
695 int ret = -ENOMEM;
696 struct kobject *bat_kobj;
697 char *uevent_env[4] = { NULL, NULL, NULL, NULL };
698
699 bat_kobj = &bat_priv->soft_iface->dev.kobj;
700
701 uevent_env[0] = kmalloc(strlen(BATADV_UEV_TYPE_VAR) +
702 strlen(batadv_uev_type_str[type]) + 1,
703 GFP_ATOMIC);
704 if (!uevent_env[0])
705 goto out;
706
707 sprintf(uevent_env[0], "%s%s", BATADV_UEV_TYPE_VAR,
708 batadv_uev_type_str[type]);
709
710 uevent_env[1] = kmalloc(strlen(BATADV_UEV_ACTION_VAR) +
711 strlen(batadv_uev_action_str[action]) + 1,
712 GFP_ATOMIC);
713 if (!uevent_env[1])
714 goto out;
715
716 sprintf(uevent_env[1], "%s%s", BATADV_UEV_ACTION_VAR,
717 batadv_uev_action_str[action]);
718
719 /* If the event is DEL, ignore the data field */
720 if (action != BATADV_UEV_DEL) {
721 uevent_env[2] = kmalloc(strlen(BATADV_UEV_DATA_VAR) +
722 strlen(data) + 1, GFP_ATOMIC);
723 if (!uevent_env[2])
724 goto out;
725
726 sprintf(uevent_env[2], "%s%s", BATADV_UEV_DATA_VAR, data);
727 }
728
729 ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
730 out:
731 kfree(uevent_env[0]);
732 kfree(uevent_env[1]);
733 kfree(uevent_env[2]);
734
735 if (ret)
736 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
737 "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
738 batadv_uev_type_str[type],
739 batadv_uev_action_str[action],
740 (action == BATADV_UEV_DEL ? "NULL" : data), ret);
741 return ret;
742 }
743