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e19f9759 | 1 | /* Copyright (C) 2010-2014 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
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 | |
ebf38fb7 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
16 | */ |
17 | ||
18 | #include "main.h" | |
b706b13b | 19 | #include "sysfs.h" |
c6c8fea2 | 20 | #include "translation-table.h" |
33af49ad | 21 | #include "distributed-arp-table.h" |
3f4841ff | 22 | #include "network-coding.h" |
c6c8fea2 SE |
23 | #include "originator.h" |
24 | #include "hard-interface.h" | |
90f4435d | 25 | #include "soft-interface.h" |
c6c8fea2 SE |
26 | #include "gateway_common.h" |
27 | #include "gateway_client.h" | |
c6c8fea2 | 28 | |
0ff9b86f | 29 | static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) |
3d222bba SE |
30 | { |
31 | struct device *dev = container_of(obj->parent, struct device, kobj); | |
f138694b | 32 | |
3d222bba SE |
33 | return to_net_dev(dev); |
34 | } | |
35 | ||
56303d34 | 36 | static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) |
3d222bba | 37 | { |
0ff9b86f | 38 | struct net_device *net_dev = batadv_kobj_to_netdev(obj); |
f138694b | 39 | |
3d222bba SE |
40 | return netdev_priv(net_dev); |
41 | } | |
c6c8fea2 | 42 | |
90f4435d AQ |
43 | /** |
44 | * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv | |
45 | * @obj: kobject to covert | |
46 | * | |
47 | * Returns the associated batadv_priv struct. | |
48 | */ | |
49 | static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) | |
50 | { | |
51 | /* VLAN specific attributes are located in the root sysfs folder if they | |
52 | * refer to the untagged VLAN.. | |
53 | */ | |
54 | if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) | |
55 | return batadv_kobj_to_batpriv(obj); | |
56 | ||
57 | /* ..while the attributes for the tagged vlans are located in | |
58 | * the in the corresponding "vlan%VID" subfolder | |
59 | */ | |
60 | return batadv_kobj_to_batpriv(obj->parent); | |
61 | } | |
62 | ||
63 | /** | |
64 | * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct | |
65 | * @obj: kobject to covert | |
66 | * | |
67 | * Returns the associated softif_vlan struct if found, NULL otherwise. | |
68 | */ | |
69 | static struct batadv_softif_vlan * | |
70 | batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) | |
71 | { | |
72 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
73 | ||
74 | rcu_read_lock(); | |
75 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
76 | if (vlan_tmp->kobj != obj) | |
77 | continue; | |
78 | ||
79 | if (!atomic_inc_not_zero(&vlan_tmp->refcount)) | |
80 | continue; | |
81 | ||
82 | vlan = vlan_tmp; | |
83 | break; | |
84 | } | |
85 | rcu_read_unlock(); | |
86 | ||
87 | return vlan; | |
88 | } | |
89 | ||
347c80f0 SE |
90 | #define BATADV_UEV_TYPE_VAR "BATTYPE=" |
91 | #define BATADV_UEV_ACTION_VAR "BATACTION=" | |
92 | #define BATADV_UEV_DATA_VAR "BATDATA=" | |
c6bda689 | 93 | |
0ff9b86f | 94 | static char *batadv_uev_action_str[] = { |
c6bda689 AQ |
95 | "add", |
96 | "del", | |
97 | "change" | |
98 | }; | |
99 | ||
0ff9b86f | 100 | static char *batadv_uev_type_str[] = { |
c6bda689 AQ |
101 | "gw" |
102 | }; | |
103 | ||
90f4435d AQ |
104 | /* Use this, if you have customized show and store functions for vlan attrs */ |
105 | #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ | |
106 | struct batadv_attribute batadv_attr_vlan_##_name = { \ | |
107 | .attr = {.name = __stringify(_name), \ | |
108 | .mode = _mode }, \ | |
109 | .show = _show, \ | |
110 | .store = _store, \ | |
2b64df20 | 111 | } |
90f4435d | 112 | |
c6c8fea2 | 113 | /* Use this, if you have customized show and store functions */ |
347c80f0 | 114 | #define BATADV_ATTR(_name, _mode, _show, _store) \ |
b4d66b87 | 115 | struct batadv_attribute batadv_attr_##_name = { \ |
347c80f0 SE |
116 | .attr = {.name = __stringify(_name), \ |
117 | .mode = _mode }, \ | |
118 | .show = _show, \ | |
119 | .store = _store, \ | |
2b64df20 | 120 | } |
c6c8fea2 | 121 | |
347c80f0 | 122 | #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ |
0ff9b86f SE |
123 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
124 | struct attribute *attr, char *buff, \ | |
125 | size_t count) \ | |
c6c8fea2 | 126 | { \ |
0ff9b86f | 127 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 128 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 129 | \ |
0ff9b86f SE |
130 | return __batadv_store_bool_attr(buff, count, _post_func, attr, \ |
131 | &bat_priv->_name, net_dev); \ | |
c6c8fea2 SE |
132 | } |
133 | ||
347c80f0 | 134 | #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ |
0ff9b86f SE |
135 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
136 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 137 | { \ |
56303d34 | 138 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 139 | \ |
c6c8fea2 SE |
140 | return sprintf(buff, "%s\n", \ |
141 | atomic_read(&bat_priv->_name) == 0 ? \ | |
142 | "disabled" : "enabled"); \ | |
143 | } \ | |
144 | ||
f245c38b | 145 | /* Use this, if you are going to turn a [name] in the soft-interface |
9cfc7bd6 SE |
146 | * (bat_priv) on or off |
147 | */ | |
347c80f0 SE |
148 | #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \ |
149 | static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ | |
150 | static BATADV_ATTR_SIF_SHOW_BOOL(_name) \ | |
151 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
152 | batadv_store_##_name) | |
c6c8fea2 SE |
153 | |
154 | ||
347c80f0 | 155 | #define BATADV_ATTR_SIF_STORE_UINT(_name, _min, _max, _post_func) \ |
0ff9b86f SE |
156 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
157 | struct attribute *attr, char *buff, \ | |
158 | size_t count) \ | |
c6c8fea2 | 159 | { \ |
0ff9b86f | 160 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 161 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 162 | \ |
0ff9b86f SE |
163 | return __batadv_store_uint_attr(buff, count, _min, _max, \ |
164 | _post_func, attr, \ | |
165 | &bat_priv->_name, net_dev); \ | |
c6c8fea2 SE |
166 | } |
167 | ||
347c80f0 | 168 | #define BATADV_ATTR_SIF_SHOW_UINT(_name) \ |
0ff9b86f SE |
169 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
170 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 171 | { \ |
56303d34 | 172 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 173 | \ |
c6c8fea2 SE |
174 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \ |
175 | } \ | |
176 | ||
f245c38b | 177 | /* Use this, if you are going to set [name] in the soft-interface |
9cfc7bd6 SE |
178 | * (bat_priv) to an unsigned integer value |
179 | */ | |
347c80f0 SE |
180 | #define BATADV_ATTR_SIF_UINT(_name, _mode, _min, _max, _post_func) \ |
181 | static BATADV_ATTR_SIF_STORE_UINT(_name, _min, _max, _post_func)\ | |
182 | static BATADV_ATTR_SIF_SHOW_UINT(_name) \ | |
183 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
184 | batadv_store_##_name) | |
c6c8fea2 | 185 | |
90f4435d AQ |
186 | #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ |
187 | ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ | |
188 | struct attribute *attr, char *buff, \ | |
189 | size_t count) \ | |
190 | { \ | |
191 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
192 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
193 | kobj); \ | |
194 | size_t res = __batadv_store_bool_attr(buff, count, _post_func, \ | |
195 | attr, &vlan->_name, \ | |
196 | bat_priv->soft_iface); \ | |
f138694b | 197 | \ |
90f4435d AQ |
198 | batadv_softif_vlan_free_ref(vlan); \ |
199 | return res; \ | |
200 | } | |
201 | ||
202 | #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
203 | ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ | |
204 | struct attribute *attr, char *buff) \ | |
205 | { \ | |
206 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
207 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
208 | kobj); \ | |
209 | size_t res = sprintf(buff, "%s\n", \ | |
210 | atomic_read(&vlan->_name) == 0 ? \ | |
211 | "disabled" : "enabled"); \ | |
f138694b | 212 | \ |
90f4435d AQ |
213 | batadv_softif_vlan_free_ref(vlan); \ |
214 | return res; \ | |
215 | } | |
216 | ||
217 | /* Use this, if you are going to turn a [name] in the vlan struct on or off */ | |
218 | #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \ | |
219 | static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ | |
220 | static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
221 | static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \ | |
222 | batadv_store_vlan_##_name) | |
c6c8fea2 | 223 | |
0ff9b86f SE |
224 | static int batadv_store_bool_attr(char *buff, size_t count, |
225 | struct net_device *net_dev, | |
226 | const char *attr_name, atomic_t *attr) | |
c6c8fea2 SE |
227 | { |
228 | int enabled = -1; | |
229 | ||
230 | if (buff[count - 1] == '\n') | |
231 | buff[count - 1] = '\0'; | |
232 | ||
233 | if ((strncmp(buff, "1", 2) == 0) || | |
234 | (strncmp(buff, "enable", 7) == 0) || | |
235 | (strncmp(buff, "enabled", 8) == 0)) | |
236 | enabled = 1; | |
237 | ||
238 | if ((strncmp(buff, "0", 2) == 0) || | |
239 | (strncmp(buff, "disable", 8) == 0) || | |
240 | (strncmp(buff, "disabled", 9) == 0)) | |
241 | enabled = 0; | |
242 | ||
243 | if (enabled < 0) { | |
3e34819e SE |
244 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
245 | attr_name, buff); | |
c6c8fea2 SE |
246 | return -EINVAL; |
247 | } | |
248 | ||
249 | if (atomic_read(attr) == enabled) | |
250 | return count; | |
251 | ||
3e34819e SE |
252 | batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, |
253 | atomic_read(attr) == 1 ? "enabled" : "disabled", | |
254 | enabled == 1 ? "enabled" : "disabled"); | |
c6c8fea2 | 255 | |
95c96174 | 256 | atomic_set(attr, (unsigned int)enabled); |
c6c8fea2 SE |
257 | return count; |
258 | } | |
259 | ||
0ff9b86f SE |
260 | static inline ssize_t |
261 | __batadv_store_bool_attr(char *buff, size_t count, | |
262 | void (*post_func)(struct net_device *), | |
263 | struct attribute *attr, | |
264 | atomic_t *attr_store, struct net_device *net_dev) | |
c6c8fea2 SE |
265 | { |
266 | int ret; | |
267 | ||
0ff9b86f SE |
268 | ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, |
269 | attr_store); | |
c6c8fea2 SE |
270 | if (post_func && ret) |
271 | post_func(net_dev); | |
272 | ||
273 | return ret; | |
274 | } | |
275 | ||
0ff9b86f SE |
276 | static int batadv_store_uint_attr(const char *buff, size_t count, |
277 | struct net_device *net_dev, | |
278 | const char *attr_name, | |
279 | unsigned int min, unsigned int max, | |
280 | atomic_t *attr) | |
c6c8fea2 SE |
281 | { |
282 | unsigned long uint_val; | |
283 | int ret; | |
284 | ||
25a92b13 | 285 | ret = kstrtoul(buff, 10, &uint_val); |
c6c8fea2 | 286 | if (ret) { |
3e34819e SE |
287 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
288 | attr_name, buff); | |
c6c8fea2 SE |
289 | return -EINVAL; |
290 | } | |
291 | ||
292 | if (uint_val < min) { | |
3e34819e SE |
293 | batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", |
294 | attr_name, uint_val, min); | |
c6c8fea2 SE |
295 | return -EINVAL; |
296 | } | |
297 | ||
298 | if (uint_val > max) { | |
3e34819e SE |
299 | batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", |
300 | attr_name, uint_val, max); | |
c6c8fea2 SE |
301 | return -EINVAL; |
302 | } | |
303 | ||
304 | if (atomic_read(attr) == uint_val) | |
305 | return count; | |
306 | ||
3e34819e SE |
307 | batadv_info(net_dev, "%s: Changing from: %i to: %lu\n", |
308 | attr_name, atomic_read(attr), uint_val); | |
c6c8fea2 SE |
309 | |
310 | atomic_set(attr, uint_val); | |
311 | return count; | |
312 | } | |
313 | ||
0ff9b86f SE |
314 | static inline ssize_t |
315 | __batadv_store_uint_attr(const char *buff, size_t count, | |
316 | int min, int max, | |
317 | void (*post_func)(struct net_device *), | |
318 | const struct attribute *attr, | |
319 | atomic_t *attr_store, struct net_device *net_dev) | |
c6c8fea2 SE |
320 | { |
321 | int ret; | |
322 | ||
0ff9b86f SE |
323 | ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max, |
324 | attr_store); | |
c6c8fea2 SE |
325 | if (post_func && ret) |
326 | post_func(net_dev); | |
327 | ||
328 | return ret; | |
329 | } | |
330 | ||
0ff9b86f SE |
331 | static ssize_t batadv_show_bat_algo(struct kobject *kobj, |
332 | struct attribute *attr, char *buff) | |
ea3d2fd1 | 333 | { |
56303d34 | 334 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
f138694b | 335 | |
ea3d2fd1 ML |
336 | return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name); |
337 | } | |
338 | ||
4e820e72 | 339 | static void batadv_post_gw_reselect(struct net_device *net_dev) |
c6c8fea2 | 340 | { |
56303d34 | 341 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
f138694b | 342 | |
4e820e72 | 343 | batadv_gw_reselect(bat_priv); |
c6c8fea2 SE |
344 | } |
345 | ||
0ff9b86f SE |
346 | static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, |
347 | char *buff) | |
c6c8fea2 | 348 | { |
56303d34 | 349 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
c6c8fea2 SE |
350 | int bytes_written; |
351 | ||
352 | switch (atomic_read(&bat_priv->gw_mode)) { | |
cd646ab1 | 353 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 SE |
354 | bytes_written = sprintf(buff, "%s\n", |
355 | BATADV_GW_MODE_CLIENT_NAME); | |
c6c8fea2 | 356 | break; |
cd646ab1 | 357 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 SE |
358 | bytes_written = sprintf(buff, "%s\n", |
359 | BATADV_GW_MODE_SERVER_NAME); | |
c6c8fea2 SE |
360 | break; |
361 | default: | |
97ea4ba1 SE |
362 | bytes_written = sprintf(buff, "%s\n", |
363 | BATADV_GW_MODE_OFF_NAME); | |
c6c8fea2 SE |
364 | break; |
365 | } | |
366 | ||
367 | return bytes_written; | |
368 | } | |
369 | ||
0ff9b86f SE |
370 | static ssize_t batadv_store_gw_mode(struct kobject *kobj, |
371 | struct attribute *attr, char *buff, | |
372 | size_t count) | |
c6c8fea2 | 373 | { |
0ff9b86f | 374 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 375 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
c6c8fea2 SE |
376 | char *curr_gw_mode_str; |
377 | int gw_mode_tmp = -1; | |
378 | ||
379 | if (buff[count - 1] == '\n') | |
380 | buff[count - 1] = '\0'; | |
381 | ||
97ea4ba1 SE |
382 | if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, |
383 | strlen(BATADV_GW_MODE_OFF_NAME)) == 0) | |
cd646ab1 | 384 | gw_mode_tmp = BATADV_GW_MODE_OFF; |
c6c8fea2 | 385 | |
97ea4ba1 SE |
386 | if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, |
387 | strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) | |
cd646ab1 | 388 | gw_mode_tmp = BATADV_GW_MODE_CLIENT; |
c6c8fea2 | 389 | |
97ea4ba1 SE |
390 | if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, |
391 | strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) | |
cd646ab1 | 392 | gw_mode_tmp = BATADV_GW_MODE_SERVER; |
c6c8fea2 SE |
393 | |
394 | if (gw_mode_tmp < 0) { | |
3e34819e SE |
395 | batadv_info(net_dev, |
396 | "Invalid parameter for 'gw mode' setting received: %s\n", | |
397 | buff); | |
c6c8fea2 SE |
398 | return -EINVAL; |
399 | } | |
400 | ||
401 | if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp) | |
402 | return count; | |
403 | ||
404 | switch (atomic_read(&bat_priv->gw_mode)) { | |
cd646ab1 | 405 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 | 406 | curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; |
c6c8fea2 | 407 | break; |
cd646ab1 | 408 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 | 409 | curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; |
c6c8fea2 SE |
410 | break; |
411 | default: | |
97ea4ba1 | 412 | curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; |
c6c8fea2 SE |
413 | break; |
414 | } | |
415 | ||
3e34819e SE |
416 | batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", |
417 | curr_gw_mode_str, buff); | |
c6c8fea2 | 418 | |
f3163181 AQ |
419 | /* Invoking batadv_gw_reselect() is not enough to really de-select the |
420 | * current GW. It will only instruct the gateway client code to perform | |
421 | * a re-election the next time that this is needed. | |
422 | * | |
423 | * When gw client mode is being switched off the current GW must be | |
424 | * de-selected explicitly otherwise no GW_ADD uevent is thrown on | |
425 | * client mode re-activation. This is operation is performed in | |
426 | * batadv_gw_check_client_stop(). | |
427 | */ | |
4e820e72 | 428 | batadv_gw_reselect(bat_priv); |
c6eaa3f0 AQ |
429 | /* always call batadv_gw_check_client_stop() before changing the gateway |
430 | * state | |
431 | */ | |
432 | batadv_gw_check_client_stop(bat_priv); | |
95c96174 | 433 | atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp); |
414254e3 | 434 | batadv_gw_tvlv_container_update(bat_priv); |
c6c8fea2 SE |
435 | return count; |
436 | } | |
437 | ||
0ff9b86f SE |
438 | static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, |
439 | struct attribute *attr, char *buff) | |
c6c8fea2 | 440 | { |
56303d34 | 441 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
414254e3 ML |
442 | uint32_t down, up; |
443 | ||
444 | down = atomic_read(&bat_priv->gw.bandwidth_down); | |
445 | up = atomic_read(&bat_priv->gw.bandwidth_up); | |
446 | ||
447 | return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10, | |
448 | down % 10, up / 10, up % 10); | |
c6c8fea2 SE |
449 | } |
450 | ||
0ff9b86f SE |
451 | static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, |
452 | struct attribute *attr, char *buff, | |
453 | size_t count) | |
c6c8fea2 | 454 | { |
0ff9b86f | 455 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
c6c8fea2 SE |
456 | |
457 | if (buff[count - 1] == '\n') | |
458 | buff[count - 1] = '\0'; | |
459 | ||
84d5e5e0 | 460 | return batadv_gw_bandwidth_set(net_dev, buff, count); |
c6c8fea2 SE |
461 | } |
462 | ||
c42edfe3 AQ |
463 | /** |
464 | * batadv_show_isolation_mark - print the current isolation mark/mask | |
465 | * @kobj: kobject representing the private mesh sysfs directory | |
466 | * @attr: the batman-adv attribute the user is interacting with | |
467 | * @buff: the buffer that will contain the data to send back to the user | |
468 | * | |
469 | * Returns the number of bytes written into 'buff' on success or a negative | |
470 | * error code in case of failure | |
471 | */ | |
472 | static ssize_t batadv_show_isolation_mark(struct kobject *kobj, | |
473 | struct attribute *attr, char *buff) | |
474 | { | |
475 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
476 | ||
477 | return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark, | |
478 | bat_priv->isolation_mark_mask); | |
479 | } | |
480 | ||
481 | /** | |
482 | * batadv_store_isolation_mark - parse and store the isolation mark/mask entered | |
483 | * by the user | |
484 | * @kobj: kobject representing the private mesh sysfs directory | |
485 | * @attr: the batman-adv attribute the user is interacting with | |
486 | * @buff: the buffer containing the user data | |
487 | * @count: number of bytes in the buffer | |
488 | * | |
489 | * Returns 'count' on success or a negative error code in case of failure | |
490 | */ | |
491 | static ssize_t batadv_store_isolation_mark(struct kobject *kobj, | |
492 | struct attribute *attr, char *buff, | |
493 | size_t count) | |
494 | { | |
495 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
496 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
497 | uint32_t mark, mask; | |
498 | char *mask_ptr; | |
499 | ||
500 | /* parse the mask if it has been specified, otherwise assume the mask is | |
501 | * the biggest possible | |
502 | */ | |
503 | mask = 0xFFFFFFFF; | |
504 | mask_ptr = strchr(buff, '/'); | |
505 | if (mask_ptr) { | |
506 | *mask_ptr = '\0'; | |
507 | mask_ptr++; | |
508 | ||
509 | /* the mask must be entered in hex base as it is going to be a | |
510 | * bitmask and not a prefix length | |
511 | */ | |
512 | if (kstrtou32(mask_ptr, 16, &mask) < 0) | |
513 | return -EINVAL; | |
514 | } | |
515 | ||
516 | /* the mark can be entered in any base */ | |
517 | if (kstrtou32(buff, 0, &mark) < 0) | |
518 | return -EINVAL; | |
519 | ||
520 | bat_priv->isolation_mark_mask = mask; | |
521 | /* erase bits not covered by the mask */ | |
522 | bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask; | |
523 | ||
524 | batadv_info(net_dev, | |
525 | "New skb mark for extended isolation: %#.8x/%#.8x\n", | |
526 | bat_priv->isolation_mark, bat_priv->isolation_mark_mask); | |
527 | ||
528 | return count; | |
529 | } | |
530 | ||
347c80f0 SE |
531 | BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL); |
532 | BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL); | |
7a5cc242 | 533 | #ifdef CONFIG_BATMAN_ADV_BLA |
347c80f0 | 534 | BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL); |
7a5cc242 | 535 | #endif |
33af49ad | 536 | #ifdef CONFIG_BATMAN_ADV_DAT |
17cf0ea4 ML |
537 | BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR, |
538 | batadv_dat_status_update); | |
33af49ad | 539 | #endif |
347c80f0 | 540 | BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu); |
347c80f0 SE |
541 | static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL); |
542 | static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode, | |
543 | batadv_store_gw_mode); | |
42d0b044 SE |
544 | BATADV_ATTR_SIF_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * BATADV_JITTER, |
545 | INT_MAX, NULL); | |
546 | BATADV_ATTR_SIF_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, BATADV_TQ_MAX_VALUE, | |
347c80f0 | 547 | NULL); |
42d0b044 | 548 | BATADV_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, BATADV_TQ_MAX_VALUE, |
4e820e72 | 549 | batadv_post_gw_reselect); |
347c80f0 SE |
550 | static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth, |
551 | batadv_store_gw_bwidth); | |
1d8ab8d3 LL |
552 | #ifdef CONFIG_BATMAN_ADV_MCAST |
553 | BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL); | |
554 | #endif | |
c6c8fea2 | 555 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
39c75a51 | 556 | BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL); |
c6c8fea2 | 557 | #endif |
d353d8d4 | 558 | #ifdef CONFIG_BATMAN_ADV_NC |
3f4841ff ML |
559 | BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR, |
560 | batadv_nc_status_update); | |
d353d8d4 | 561 | #endif |
c42edfe3 AQ |
562 | static BATADV_ATTR(isolation_mark, S_IRUGO | S_IWUSR, |
563 | batadv_show_isolation_mark, batadv_store_isolation_mark); | |
c6c8fea2 | 564 | |
b4d66b87 | 565 | static struct batadv_attribute *batadv_mesh_attrs[] = { |
0ff9b86f SE |
566 | &batadv_attr_aggregated_ogms, |
567 | &batadv_attr_bonding, | |
7a5cc242 | 568 | #ifdef CONFIG_BATMAN_ADV_BLA |
0ff9b86f | 569 | &batadv_attr_bridge_loop_avoidance, |
33af49ad AQ |
570 | #endif |
571 | #ifdef CONFIG_BATMAN_ADV_DAT | |
572 | &batadv_attr_distributed_arp_table, | |
1d8ab8d3 LL |
573 | #endif |
574 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
575 | &batadv_attr_multicast_mode, | |
7a5cc242 | 576 | #endif |
0ff9b86f | 577 | &batadv_attr_fragmentation, |
0ff9b86f SE |
578 | &batadv_attr_routing_algo, |
579 | &batadv_attr_gw_mode, | |
580 | &batadv_attr_orig_interval, | |
581 | &batadv_attr_hop_penalty, | |
582 | &batadv_attr_gw_sel_class, | |
583 | &batadv_attr_gw_bandwidth, | |
c6c8fea2 | 584 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
0ff9b86f | 585 | &batadv_attr_log_level, |
d353d8d4 MH |
586 | #endif |
587 | #ifdef CONFIG_BATMAN_ADV_NC | |
588 | &batadv_attr_network_coding, | |
c6c8fea2 | 589 | #endif |
c42edfe3 | 590 | &batadv_attr_isolation_mark, |
c6c8fea2 SE |
591 | NULL, |
592 | }; | |
593 | ||
b8cbd81d AQ |
594 | BATADV_ATTR_VLAN_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL); |
595 | ||
90f4435d AQ |
596 | /** |
597 | * batadv_vlan_attrs - array of vlan specific sysfs attributes | |
598 | */ | |
599 | static struct batadv_attribute *batadv_vlan_attrs[] = { | |
b8cbd81d | 600 | &batadv_attr_vlan_ap_isolation, |
90f4435d AQ |
601 | NULL, |
602 | }; | |
603 | ||
5853e22c | 604 | int batadv_sysfs_add_meshif(struct net_device *dev) |
c6c8fea2 SE |
605 | { |
606 | struct kobject *batif_kobject = &dev->dev.kobj; | |
56303d34 | 607 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 608 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
609 | int err; |
610 | ||
036cbfeb | 611 | bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, |
c6c8fea2 SE |
612 | batif_kobject); |
613 | if (!bat_priv->mesh_obj) { | |
3e34819e | 614 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 615 | BATADV_SYSFS_IF_MESH_SUBDIR); |
c6c8fea2 SE |
616 | goto out; |
617 | } | |
618 | ||
0ff9b86f | 619 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
620 | err = sysfs_create_file(bat_priv->mesh_obj, |
621 | &((*bat_attr)->attr)); | |
622 | if (err) { | |
3e34819e | 623 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 624 | dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, |
3e34819e | 625 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
626 | goto rem_attr; |
627 | } | |
628 | } | |
629 | ||
630 | return 0; | |
631 | ||
632 | rem_attr: | |
0ff9b86f | 633 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
634 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
635 | ||
636 | kobject_put(bat_priv->mesh_obj); | |
637 | bat_priv->mesh_obj = NULL; | |
638 | out: | |
639 | return -ENOMEM; | |
640 | } | |
641 | ||
5853e22c | 642 | void batadv_sysfs_del_meshif(struct net_device *dev) |
c6c8fea2 | 643 | { |
56303d34 | 644 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 645 | struct batadv_attribute **bat_attr; |
c6c8fea2 | 646 | |
0ff9b86f | 647 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
648 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
649 | ||
650 | kobject_put(bat_priv->mesh_obj); | |
651 | bat_priv->mesh_obj = NULL; | |
652 | } | |
653 | ||
90f4435d AQ |
654 | /** |
655 | * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan | |
656 | * @dev: netdev of the mesh interface | |
657 | * @vlan: private data of the newly added VLAN interface | |
658 | * | |
659 | * Returns 0 on success and -ENOMEM if any of the structure allocations fails. | |
660 | */ | |
661 | int batadv_sysfs_add_vlan(struct net_device *dev, | |
662 | struct batadv_softif_vlan *vlan) | |
663 | { | |
664 | char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5]; | |
665 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
666 | struct batadv_attribute **bat_attr; | |
667 | int err; | |
668 | ||
669 | if (vlan->vid & BATADV_VLAN_HAS_TAG) { | |
670 | sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu", | |
671 | vlan->vid & VLAN_VID_MASK); | |
672 | ||
673 | vlan->kobj = kobject_create_and_add(vlan_subdir, | |
674 | bat_priv->mesh_obj); | |
675 | if (!vlan->kobj) { | |
676 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", | |
677 | dev->name, vlan_subdir); | |
678 | goto out; | |
679 | } | |
680 | } else { | |
681 | /* the untagged LAN uses the root folder to store its "VLAN | |
682 | * specific attributes" | |
683 | */ | |
684 | vlan->kobj = bat_priv->mesh_obj; | |
685 | kobject_get(bat_priv->mesh_obj); | |
686 | } | |
687 | ||
688 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) { | |
689 | err = sysfs_create_file(vlan->kobj, | |
690 | &((*bat_attr)->attr)); | |
691 | if (err) { | |
692 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", | |
693 | dev->name, vlan_subdir, | |
694 | ((*bat_attr)->attr).name); | |
695 | goto rem_attr; | |
696 | } | |
697 | } | |
698 | ||
699 | return 0; | |
700 | ||
701 | rem_attr: | |
702 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
703 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
704 | ||
705 | kobject_put(vlan->kobj); | |
706 | vlan->kobj = NULL; | |
707 | out: | |
708 | return -ENOMEM; | |
709 | } | |
710 | ||
711 | /** | |
712 | * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN | |
713 | * @bat_priv: the bat priv with all the soft interface information | |
714 | * @vlan: the private data of the VLAN to destroy | |
715 | */ | |
716 | void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, | |
717 | struct batadv_softif_vlan *vlan) | |
718 | { | |
719 | struct batadv_attribute **bat_attr; | |
720 | ||
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; | |
726 | } | |
727 | ||
0ff9b86f SE |
728 | static ssize_t batadv_show_mesh_iface(struct kobject *kobj, |
729 | struct attribute *attr, char *buff) | |
c6c8fea2 | 730 | { |
0ff9b86f | 731 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 732 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 733 | ssize_t length; |
e9a4f295 | 734 | const char *ifname; |
c6c8fea2 | 735 | |
56303d34 | 736 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 737 | if (!hard_iface) |
c6c8fea2 SE |
738 | return 0; |
739 | ||
e9a4f295 SE |
740 | if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) |
741 | ifname = "none"; | |
742 | else | |
743 | ifname = hard_iface->soft_iface->name; | |
744 | ||
745 | length = sprintf(buff, "%s\n", ifname); | |
c6c8fea2 | 746 | |
e5d89254 | 747 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
748 | |
749 | return length; | |
750 | } | |
751 | ||
0ff9b86f SE |
752 | static ssize_t batadv_store_mesh_iface(struct kobject *kobj, |
753 | struct attribute *attr, char *buff, | |
754 | size_t count) | |
c6c8fea2 | 755 | { |
0ff9b86f | 756 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 757 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 758 | int status_tmp = -1; |
ed75ccbe | 759 | int ret = count; |
c6c8fea2 | 760 | |
56303d34 | 761 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 762 | if (!hard_iface) |
c6c8fea2 SE |
763 | return count; |
764 | ||
765 | if (buff[count - 1] == '\n') | |
766 | buff[count - 1] = '\0'; | |
767 | ||
768 | if (strlen(buff) >= IFNAMSIZ) { | |
86ceb360 SE |
769 | pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", |
770 | buff); | |
e5d89254 | 771 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
772 | return -EINVAL; |
773 | } | |
774 | ||
775 | if (strncmp(buff, "none", 4) == 0) | |
e9a4f295 | 776 | status_tmp = BATADV_IF_NOT_IN_USE; |
c6c8fea2 | 777 | else |
e9a4f295 | 778 | status_tmp = BATADV_IF_I_WANT_YOU; |
c6c8fea2 | 779 | |
e6c10f43 ML |
780 | if (hard_iface->if_status == status_tmp) |
781 | goto out; | |
782 | ||
783 | if ((hard_iface->soft_iface) && | |
784 | (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0)) | |
ed75ccbe | 785 | goto out; |
c6c8fea2 | 786 | |
ac16d148 | 787 | rtnl_lock(); |
3a4375a9 | 788 | |
e9a4f295 | 789 | if (status_tmp == BATADV_IF_NOT_IN_USE) { |
a15fd361 SE |
790 | batadv_hardif_disable_interface(hard_iface, |
791 | BATADV_IF_CLEANUP_AUTO); | |
3a4375a9 | 792 | goto unlock; |
c6c8fea2 SE |
793 | } |
794 | ||
795 | /* if the interface already is in use */ | |
e9a4f295 | 796 | if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) |
a15fd361 SE |
797 | batadv_hardif_disable_interface(hard_iface, |
798 | BATADV_IF_CLEANUP_AUTO); | |
c6c8fea2 | 799 | |
9563877e | 800 | ret = batadv_hardif_enable_interface(hard_iface, buff); |
c6c8fea2 | 801 | |
3a4375a9 SE |
802 | unlock: |
803 | rtnl_unlock(); | |
ed75ccbe | 804 | out: |
e5d89254 | 805 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
806 | return ret; |
807 | } | |
808 | ||
0ff9b86f SE |
809 | static ssize_t batadv_show_iface_status(struct kobject *kobj, |
810 | struct attribute *attr, char *buff) | |
c6c8fea2 | 811 | { |
0ff9b86f | 812 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 813 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 SE |
814 | ssize_t length; |
815 | ||
56303d34 | 816 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 817 | if (!hard_iface) |
c6c8fea2 SE |
818 | return 0; |
819 | ||
e6c10f43 | 820 | switch (hard_iface->if_status) { |
e9a4f295 | 821 | case BATADV_IF_TO_BE_REMOVED: |
c6c8fea2 SE |
822 | length = sprintf(buff, "disabling\n"); |
823 | break; | |
e9a4f295 | 824 | case BATADV_IF_INACTIVE: |
c6c8fea2 SE |
825 | length = sprintf(buff, "inactive\n"); |
826 | break; | |
e9a4f295 | 827 | case BATADV_IF_ACTIVE: |
c6c8fea2 SE |
828 | length = sprintf(buff, "active\n"); |
829 | break; | |
e9a4f295 | 830 | case BATADV_IF_TO_BE_ACTIVATED: |
c6c8fea2 SE |
831 | length = sprintf(buff, "enabling\n"); |
832 | break; | |
e9a4f295 | 833 | case BATADV_IF_NOT_IN_USE: |
c6c8fea2 SE |
834 | default: |
835 | length = sprintf(buff, "not in use\n"); | |
836 | break; | |
837 | } | |
838 | ||
e5d89254 | 839 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
840 | |
841 | return length; | |
842 | } | |
843 | ||
347c80f0 SE |
844 | static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface, |
845 | batadv_store_mesh_iface); | |
846 | static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL); | |
c6c8fea2 | 847 | |
b4d66b87 | 848 | static struct batadv_attribute *batadv_batman_attrs[] = { |
0ff9b86f SE |
849 | &batadv_attr_mesh_iface, |
850 | &batadv_attr_iface_status, | |
c6c8fea2 SE |
851 | NULL, |
852 | }; | |
853 | ||
5853e22c | 854 | int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) |
c6c8fea2 SE |
855 | { |
856 | struct kobject *hardif_kobject = &dev->dev.kobj; | |
b4d66b87 | 857 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
858 | int err; |
859 | ||
036cbfeb SE |
860 | *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, |
861 | hardif_kobject); | |
c6c8fea2 SE |
862 | |
863 | if (!*hardif_obj) { | |
3e34819e | 864 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 865 | BATADV_SYSFS_IF_BAT_SUBDIR); |
c6c8fea2 SE |
866 | goto out; |
867 | } | |
868 | ||
0ff9b86f | 869 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
870 | err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); |
871 | if (err) { | |
3e34819e | 872 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 873 | dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, |
3e34819e | 874 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
875 | goto rem_attr; |
876 | } | |
877 | } | |
878 | ||
879 | return 0; | |
880 | ||
881 | rem_attr: | |
0ff9b86f | 882 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
883 | sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); |
884 | out: | |
885 | return -ENOMEM; | |
886 | } | |
887 | ||
5853e22c | 888 | void batadv_sysfs_del_hardif(struct kobject **hardif_obj) |
c6c8fea2 SE |
889 | { |
890 | kobject_put(*hardif_obj); | |
891 | *hardif_obj = NULL; | |
892 | } | |
c6bda689 | 893 | |
56303d34 | 894 | int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, |
39c75a51 | 895 | enum batadv_uev_action action, const char *data) |
c6bda689 | 896 | { |
5346c35e | 897 | int ret = -ENOMEM; |
c6bda689 AQ |
898 | struct kobject *bat_kobj; |
899 | char *uevent_env[4] = { NULL, NULL, NULL, NULL }; | |
900 | ||
736292c2 | 901 | bat_kobj = &bat_priv->soft_iface->dev.kobj; |
c6bda689 | 902 | |
347c80f0 | 903 | uevent_env[0] = kmalloc(strlen(BATADV_UEV_TYPE_VAR) + |
0ff9b86f | 904 | strlen(batadv_uev_type_str[type]) + 1, |
c6bda689 AQ |
905 | GFP_ATOMIC); |
906 | if (!uevent_env[0]) | |
907 | goto out; | |
908 | ||
347c80f0 SE |
909 | sprintf(uevent_env[0], "%s%s", BATADV_UEV_TYPE_VAR, |
910 | batadv_uev_type_str[type]); | |
c6bda689 | 911 | |
347c80f0 | 912 | uevent_env[1] = kmalloc(strlen(BATADV_UEV_ACTION_VAR) + |
0ff9b86f | 913 | strlen(batadv_uev_action_str[action]) + 1, |
c6bda689 AQ |
914 | GFP_ATOMIC); |
915 | if (!uevent_env[1]) | |
916 | goto out; | |
917 | ||
347c80f0 | 918 | sprintf(uevent_env[1], "%s%s", BATADV_UEV_ACTION_VAR, |
0ff9b86f | 919 | batadv_uev_action_str[action]); |
c6bda689 AQ |
920 | |
921 | /* If the event is DEL, ignore the data field */ | |
39c75a51 | 922 | if (action != BATADV_UEV_DEL) { |
347c80f0 | 923 | uevent_env[2] = kmalloc(strlen(BATADV_UEV_DATA_VAR) + |
c6bda689 AQ |
924 | strlen(data) + 1, GFP_ATOMIC); |
925 | if (!uevent_env[2]) | |
926 | goto out; | |
927 | ||
347c80f0 | 928 | sprintf(uevent_env[2], "%s%s", BATADV_UEV_DATA_VAR, data); |
c6bda689 AQ |
929 | } |
930 | ||
931 | ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env); | |
932 | out: | |
933 | kfree(uevent_env[0]); | |
934 | kfree(uevent_env[1]); | |
935 | kfree(uevent_env[2]); | |
936 | ||
c6bda689 | 937 | if (ret) |
39c75a51 | 938 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf | 939 | "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n", |
0ff9b86f SE |
940 | batadv_uev_type_str[type], |
941 | batadv_uev_action_str[action], | |
39c75a51 | 942 | (action == BATADV_UEV_DEL ? "NULL" : data), ret); |
c6bda689 AQ |
943 | return ret; |
944 | } |