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9f6446c7 | 1 | /* Copyright (C) 2010-2015 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 | ||
b706b13b | 18 | #include "sysfs.h" |
1e2c2a4f SE |
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 | ||
33af49ad | 40 | #include "distributed-arp-table.h" |
1e2c2a4f SE |
41 | #include "gateway_client.h" |
42 | #include "gateway_common.h" | |
c6c8fea2 | 43 | #include "hard-interface.h" |
1e2c2a4f SE |
44 | #include "network-coding.h" |
45 | #include "packet.h" | |
90f4435d | 46 | #include "soft-interface.h" |
c6c8fea2 | 47 | |
0ff9b86f | 48 | static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) |
3d222bba SE |
49 | { |
50 | struct device *dev = container_of(obj->parent, struct device, kobj); | |
f138694b | 51 | |
3d222bba SE |
52 | return to_net_dev(dev); |
53 | } | |
54 | ||
56303d34 | 55 | static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) |
3d222bba | 56 | { |
0ff9b86f | 57 | struct net_device *net_dev = batadv_kobj_to_netdev(obj); |
f138694b | 58 | |
3d222bba SE |
59 | return netdev_priv(net_dev); |
60 | } | |
c6c8fea2 | 61 | |
90f4435d AQ |
62 | /** |
63 | * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv | |
64 | * @obj: kobject to covert | |
65 | * | |
66 | * Returns the associated batadv_priv struct. | |
67 | */ | |
68 | static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) | |
69 | { | |
70 | /* VLAN specific attributes are located in the root sysfs folder if they | |
71 | * refer to the untagged VLAN.. | |
72 | */ | |
73 | if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) | |
74 | return batadv_kobj_to_batpriv(obj); | |
75 | ||
76 | /* ..while the attributes for the tagged vlans are located in | |
77 | * the in the corresponding "vlan%VID" subfolder | |
78 | */ | |
79 | return batadv_kobj_to_batpriv(obj->parent); | |
80 | } | |
81 | ||
82 | /** | |
83 | * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct | |
84 | * @obj: kobject to covert | |
85 | * | |
86 | * Returns the associated softif_vlan struct if found, NULL otherwise. | |
87 | */ | |
88 | static struct batadv_softif_vlan * | |
89 | batadv_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 | ||
347c80f0 SE |
109 | #define BATADV_UEV_TYPE_VAR "BATTYPE=" |
110 | #define BATADV_UEV_ACTION_VAR "BATACTION=" | |
111 | #define BATADV_UEV_DATA_VAR "BATDATA=" | |
c6bda689 | 112 | |
0ff9b86f | 113 | static char *batadv_uev_action_str[] = { |
c6bda689 AQ |
114 | "add", |
115 | "del", | |
116 | "change" | |
117 | }; | |
118 | ||
0ff9b86f | 119 | static char *batadv_uev_type_str[] = { |
c6bda689 AQ |
120 | "gw" |
121 | }; | |
122 | ||
90f4435d AQ |
123 | /* Use this, if you have customized show and store functions for vlan attrs */ |
124 | #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ | |
125 | struct batadv_attribute batadv_attr_vlan_##_name = { \ | |
126 | .attr = {.name = __stringify(_name), \ | |
127 | .mode = _mode }, \ | |
128 | .show = _show, \ | |
129 | .store = _store, \ | |
2b64df20 | 130 | } |
90f4435d | 131 | |
c6c8fea2 | 132 | /* Use this, if you have customized show and store functions */ |
347c80f0 | 133 | #define BATADV_ATTR(_name, _mode, _show, _store) \ |
b4d66b87 | 134 | struct batadv_attribute batadv_attr_##_name = { \ |
347c80f0 SE |
135 | .attr = {.name = __stringify(_name), \ |
136 | .mode = _mode }, \ | |
137 | .show = _show, \ | |
138 | .store = _store, \ | |
2b64df20 | 139 | } |
c6c8fea2 | 140 | |
347c80f0 | 141 | #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ |
0ff9b86f SE |
142 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
143 | struct attribute *attr, char *buff, \ | |
144 | size_t count) \ | |
c6c8fea2 | 145 | { \ |
0ff9b86f | 146 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 147 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 148 | \ |
0ff9b86f SE |
149 | return __batadv_store_bool_attr(buff, count, _post_func, attr, \ |
150 | &bat_priv->_name, net_dev); \ | |
c6c8fea2 SE |
151 | } |
152 | ||
347c80f0 | 153 | #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ |
0ff9b86f SE |
154 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
155 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 156 | { \ |
56303d34 | 157 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 158 | \ |
c6c8fea2 SE |
159 | return sprintf(buff, "%s\n", \ |
160 | atomic_read(&bat_priv->_name) == 0 ? \ | |
161 | "disabled" : "enabled"); \ | |
162 | } \ | |
163 | ||
f245c38b | 164 | /* Use this, if you are going to turn a [name] in the soft-interface |
9cfc7bd6 SE |
165 | * (bat_priv) on or off |
166 | */ | |
347c80f0 SE |
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) | |
c6c8fea2 | 172 | |
6f70eb75 | 173 | #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ |
0ff9b86f SE |
174 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
175 | struct attribute *attr, char *buff, \ | |
176 | size_t count) \ | |
c6c8fea2 | 177 | { \ |
0ff9b86f | 178 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 179 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 180 | \ |
0ff9b86f SE |
181 | return __batadv_store_uint_attr(buff, count, _min, _max, \ |
182 | _post_func, attr, \ | |
6f70eb75 | 183 | &bat_priv->_var, net_dev); \ |
c6c8fea2 SE |
184 | } |
185 | ||
6f70eb75 | 186 | #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ |
0ff9b86f SE |
187 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
188 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 189 | { \ |
56303d34 | 190 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 191 | \ |
6f70eb75 | 192 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ |
c6c8fea2 SE |
193 | } \ |
194 | ||
f245c38b | 195 | /* Use this, if you are going to set [name] in the soft-interface |
9cfc7bd6 SE |
196 | * (bat_priv) to an unsigned integer value |
197 | */ | |
6f70eb75 AQ |
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) \ | |
347c80f0 SE |
201 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ |
202 | batadv_store_##_name) | |
c6c8fea2 | 203 | |
90f4435d AQ |
204 | #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ |
205 | ssize_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); \ | |
f138694b | 215 | \ |
90f4435d AQ |
216 | batadv_softif_vlan_free_ref(vlan); \ |
217 | return res; \ | |
218 | } | |
219 | ||
220 | #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
221 | ssize_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"); \ | |
f138694b | 230 | \ |
90f4435d AQ |
231 | batadv_softif_vlan_free_ref(vlan); \ |
232 | return res; \ | |
233 | } | |
234 | ||
235 | /* Use this, if you are going to turn a [name] in the vlan struct on or off */ | |
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) | |
c6c8fea2 | 241 | |
0ff9b86f SE |
242 | static int batadv_store_bool_attr(char *buff, size_t count, |
243 | struct net_device *net_dev, | |
244 | const char *attr_name, atomic_t *attr) | |
c6c8fea2 SE |
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) { | |
3e34819e SE |
262 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
263 | attr_name, buff); | |
c6c8fea2 SE |
264 | return -EINVAL; |
265 | } | |
266 | ||
267 | if (atomic_read(attr) == enabled) | |
268 | return count; | |
269 | ||
3e34819e SE |
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"); | |
c6c8fea2 | 273 | |
95c96174 | 274 | atomic_set(attr, (unsigned int)enabled); |
c6c8fea2 SE |
275 | return count; |
276 | } | |
277 | ||
0ff9b86f SE |
278 | static 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) | |
c6c8fea2 SE |
283 | { |
284 | int ret; | |
285 | ||
0ff9b86f SE |
286 | ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, |
287 | attr_store); | |
c6c8fea2 SE |
288 | if (post_func && ret) |
289 | post_func(net_dev); | |
290 | ||
291 | return ret; | |
292 | } | |
293 | ||
0ff9b86f SE |
294 | static 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) | |
c6c8fea2 SE |
299 | { |
300 | unsigned long uint_val; | |
301 | int ret; | |
302 | ||
25a92b13 | 303 | ret = kstrtoul(buff, 10, &uint_val); |
c6c8fea2 | 304 | if (ret) { |
3e34819e SE |
305 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
306 | attr_name, buff); | |
c6c8fea2 SE |
307 | return -EINVAL; |
308 | } | |
309 | ||
310 | if (uint_val < min) { | |
3e34819e SE |
311 | batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", |
312 | attr_name, uint_val, min); | |
c6c8fea2 SE |
313 | return -EINVAL; |
314 | } | |
315 | ||
316 | if (uint_val > max) { | |
3e34819e SE |
317 | batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", |
318 | attr_name, uint_val, max); | |
c6c8fea2 SE |
319 | return -EINVAL; |
320 | } | |
321 | ||
322 | if (atomic_read(attr) == uint_val) | |
323 | return count; | |
324 | ||
3e34819e SE |
325 | batadv_info(net_dev, "%s: Changing from: %i to: %lu\n", |
326 | attr_name, atomic_read(attr), uint_val); | |
c6c8fea2 SE |
327 | |
328 | atomic_set(attr, uint_val); | |
329 | return count; | |
330 | } | |
331 | ||
0ff9b86f SE |
332 | static 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) | |
c6c8fea2 SE |
338 | { |
339 | int ret; | |
340 | ||
0ff9b86f SE |
341 | ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max, |
342 | attr_store); | |
c6c8fea2 SE |
343 | if (post_func && ret) |
344 | post_func(net_dev); | |
345 | ||
346 | return ret; | |
347 | } | |
348 | ||
0ff9b86f SE |
349 | static ssize_t batadv_show_bat_algo(struct kobject *kobj, |
350 | struct attribute *attr, char *buff) | |
ea3d2fd1 | 351 | { |
56303d34 | 352 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
f138694b | 353 | |
ea3d2fd1 ML |
354 | return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name); |
355 | } | |
356 | ||
4e820e72 | 357 | static void batadv_post_gw_reselect(struct net_device *net_dev) |
c6c8fea2 | 358 | { |
56303d34 | 359 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
f138694b | 360 | |
4e820e72 | 361 | batadv_gw_reselect(bat_priv); |
c6c8fea2 SE |
362 | } |
363 | ||
0ff9b86f SE |
364 | static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, |
365 | char *buff) | |
c6c8fea2 | 366 | { |
56303d34 | 367 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
c6c8fea2 SE |
368 | int bytes_written; |
369 | ||
370 | switch (atomic_read(&bat_priv->gw_mode)) { | |
cd646ab1 | 371 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 SE |
372 | bytes_written = sprintf(buff, "%s\n", |
373 | BATADV_GW_MODE_CLIENT_NAME); | |
c6c8fea2 | 374 | break; |
cd646ab1 | 375 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 SE |
376 | bytes_written = sprintf(buff, "%s\n", |
377 | BATADV_GW_MODE_SERVER_NAME); | |
c6c8fea2 SE |
378 | break; |
379 | default: | |
97ea4ba1 SE |
380 | bytes_written = sprintf(buff, "%s\n", |
381 | BATADV_GW_MODE_OFF_NAME); | |
c6c8fea2 SE |
382 | break; |
383 | } | |
384 | ||
385 | return bytes_written; | |
386 | } | |
387 | ||
0ff9b86f SE |
388 | static ssize_t batadv_store_gw_mode(struct kobject *kobj, |
389 | struct attribute *attr, char *buff, | |
390 | size_t count) | |
c6c8fea2 | 391 | { |
0ff9b86f | 392 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 393 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
c6c8fea2 SE |
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 | ||
97ea4ba1 SE |
400 | if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, |
401 | strlen(BATADV_GW_MODE_OFF_NAME)) == 0) | |
cd646ab1 | 402 | gw_mode_tmp = BATADV_GW_MODE_OFF; |
c6c8fea2 | 403 | |
97ea4ba1 SE |
404 | if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, |
405 | strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) | |
cd646ab1 | 406 | gw_mode_tmp = BATADV_GW_MODE_CLIENT; |
c6c8fea2 | 407 | |
97ea4ba1 SE |
408 | if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, |
409 | strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) | |
cd646ab1 | 410 | gw_mode_tmp = BATADV_GW_MODE_SERVER; |
c6c8fea2 SE |
411 | |
412 | if (gw_mode_tmp < 0) { | |
3e34819e SE |
413 | batadv_info(net_dev, |
414 | "Invalid parameter for 'gw mode' setting received: %s\n", | |
415 | buff); | |
c6c8fea2 SE |
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)) { | |
cd646ab1 | 423 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 | 424 | curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; |
c6c8fea2 | 425 | break; |
cd646ab1 | 426 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 | 427 | curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; |
c6c8fea2 SE |
428 | break; |
429 | default: | |
97ea4ba1 | 430 | curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; |
c6c8fea2 SE |
431 | break; |
432 | } | |
433 | ||
3e34819e SE |
434 | batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", |
435 | curr_gw_mode_str, buff); | |
c6c8fea2 | 436 | |
f3163181 AQ |
437 | /* Invoking batadv_gw_reselect() is not enough to really de-select the |
438 | * current GW. It will only instruct the gateway client code to perform | |
439 | * a re-election the next time that this is needed. | |
440 | * | |
441 | * When gw client mode is being switched off the current GW must be | |
442 | * de-selected explicitly otherwise no GW_ADD uevent is thrown on | |
443 | * client mode re-activation. This is operation is performed in | |
444 | * batadv_gw_check_client_stop(). | |
445 | */ | |
4e820e72 | 446 | batadv_gw_reselect(bat_priv); |
c6eaa3f0 AQ |
447 | /* always call batadv_gw_check_client_stop() before changing the gateway |
448 | * state | |
449 | */ | |
450 | batadv_gw_check_client_stop(bat_priv); | |
95c96174 | 451 | atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp); |
414254e3 | 452 | batadv_gw_tvlv_container_update(bat_priv); |
c6c8fea2 SE |
453 | return count; |
454 | } | |
455 | ||
0ff9b86f SE |
456 | static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, |
457 | struct attribute *attr, char *buff) | |
c6c8fea2 | 458 | { |
56303d34 | 459 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
6b5e971a | 460 | u32 down, up; |
414254e3 ML |
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); | |
c6c8fea2 SE |
467 | } |
468 | ||
0ff9b86f SE |
469 | static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, |
470 | struct attribute *attr, char *buff, | |
471 | size_t count) | |
c6c8fea2 | 472 | { |
0ff9b86f | 473 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
c6c8fea2 SE |
474 | |
475 | if (buff[count - 1] == '\n') | |
476 | buff[count - 1] = '\0'; | |
477 | ||
84d5e5e0 | 478 | return batadv_gw_bandwidth_set(net_dev, buff, count); |
c6c8fea2 SE |
479 | } |
480 | ||
c42edfe3 AQ |
481 | /** |
482 | * batadv_show_isolation_mark - print the current isolation mark/mask | |
483 | * @kobj: kobject representing the private mesh sysfs directory | |
484 | * @attr: the batman-adv attribute the user is interacting with | |
485 | * @buff: the buffer that will contain the data to send back to the user | |
486 | * | |
487 | * Returns the number of bytes written into 'buff' on success or a negative | |
488 | * error code in case of failure | |
489 | */ | |
490 | static 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 | * batadv_store_isolation_mark - parse and store the isolation mark/mask entered | |
501 | * by the user | |
502 | * @kobj: kobject representing the private mesh sysfs directory | |
503 | * @attr: the batman-adv attribute the user is interacting with | |
504 | * @buff: the buffer containing the user data | |
505 | * @count: number of bytes in the buffer | |
506 | * | |
507 | * Returns 'count' on success or a negative error code in case of failure | |
508 | */ | |
509 | static 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); | |
6b5e971a | 515 | u32 mark, mask; |
c42edfe3 AQ |
516 | char *mask_ptr; |
517 | ||
518 | /* parse the mask if it has been specified, otherwise assume the mask is | |
519 | * the biggest possible | |
520 | */ | |
521 | mask = 0xFFFFFFFF; | |
522 | mask_ptr = strchr(buff, '/'); | |
523 | if (mask_ptr) { | |
524 | *mask_ptr = '\0'; | |
525 | mask_ptr++; | |
526 | ||
527 | /* the mask must be entered in hex base as it is going to be a | |
528 | * bitmask and not a prefix length | |
529 | */ | |
530 | if (kstrtou32(mask_ptr, 16, &mask) < 0) | |
531 | return -EINVAL; | |
532 | } | |
533 | ||
534 | /* the mark can be entered in any base */ | |
535 | if (kstrtou32(buff, 0, &mark) < 0) | |
536 | return -EINVAL; | |
537 | ||
538 | bat_priv->isolation_mark_mask = mask; | |
539 | /* erase bits not covered by the mask */ | |
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 | ||
347c80f0 SE |
549 | BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL); |
550 | BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL); | |
7a5cc242 | 551 | #ifdef CONFIG_BATMAN_ADV_BLA |
347c80f0 | 552 | BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL); |
7a5cc242 | 553 | #endif |
33af49ad | 554 | #ifdef CONFIG_BATMAN_ADV_DAT |
17cf0ea4 ML |
555 | BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR, |
556 | batadv_dat_status_update); | |
33af49ad | 557 | #endif |
347c80f0 | 558 | BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu); |
347c80f0 SE |
559 | static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL); |
560 | static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode, | |
561 | batadv_store_gw_mode); | |
6f70eb75 AQ |
562 | BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, S_IRUGO | S_IWUSR, |
563 | 2 * BATADV_JITTER, INT_MAX, NULL); | |
564 | BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, S_IRUGO | S_IWUSR, 0, | |
565 | BATADV_TQ_MAX_VALUE, NULL); | |
566 | BATADV_ATTR_SIF_UINT(gw_sel_class, gw_sel_class, S_IRUGO | S_IWUSR, 1, | |
567 | BATADV_TQ_MAX_VALUE, batadv_post_gw_reselect); | |
347c80f0 SE |
568 | static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth, |
569 | batadv_store_gw_bwidth); | |
1d8ab8d3 LL |
570 | #ifdef CONFIG_BATMAN_ADV_MCAST |
571 | BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL); | |
572 | #endif | |
c6c8fea2 | 573 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
6f70eb75 AQ |
574 | BATADV_ATTR_SIF_UINT(log_level, log_level, S_IRUGO | S_IWUSR, 0, |
575 | BATADV_DBG_ALL, NULL); | |
c6c8fea2 | 576 | #endif |
d353d8d4 | 577 | #ifdef CONFIG_BATMAN_ADV_NC |
3f4841ff ML |
578 | BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR, |
579 | batadv_nc_status_update); | |
d353d8d4 | 580 | #endif |
c42edfe3 AQ |
581 | static BATADV_ATTR(isolation_mark, S_IRUGO | S_IWUSR, |
582 | batadv_show_isolation_mark, batadv_store_isolation_mark); | |
c6c8fea2 | 583 | |
b4d66b87 | 584 | static struct batadv_attribute *batadv_mesh_attrs[] = { |
0ff9b86f SE |
585 | &batadv_attr_aggregated_ogms, |
586 | &batadv_attr_bonding, | |
7a5cc242 | 587 | #ifdef CONFIG_BATMAN_ADV_BLA |
0ff9b86f | 588 | &batadv_attr_bridge_loop_avoidance, |
33af49ad AQ |
589 | #endif |
590 | #ifdef CONFIG_BATMAN_ADV_DAT | |
591 | &batadv_attr_distributed_arp_table, | |
1d8ab8d3 LL |
592 | #endif |
593 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
594 | &batadv_attr_multicast_mode, | |
7a5cc242 | 595 | #endif |
0ff9b86f | 596 | &batadv_attr_fragmentation, |
0ff9b86f SE |
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, | |
c6c8fea2 | 603 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
0ff9b86f | 604 | &batadv_attr_log_level, |
d353d8d4 MH |
605 | #endif |
606 | #ifdef CONFIG_BATMAN_ADV_NC | |
607 | &batadv_attr_network_coding, | |
c6c8fea2 | 608 | #endif |
c42edfe3 | 609 | &batadv_attr_isolation_mark, |
c6c8fea2 SE |
610 | NULL, |
611 | }; | |
612 | ||
b8cbd81d AQ |
613 | BATADV_ATTR_VLAN_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL); |
614 | ||
90f4435d AQ |
615 | /** |
616 | * batadv_vlan_attrs - array of vlan specific sysfs attributes | |
617 | */ | |
618 | static struct batadv_attribute *batadv_vlan_attrs[] = { | |
b8cbd81d | 619 | &batadv_attr_vlan_ap_isolation, |
90f4435d AQ |
620 | NULL, |
621 | }; | |
622 | ||
5853e22c | 623 | int batadv_sysfs_add_meshif(struct net_device *dev) |
c6c8fea2 SE |
624 | { |
625 | struct kobject *batif_kobject = &dev->dev.kobj; | |
56303d34 | 626 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 627 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
628 | int err; |
629 | ||
036cbfeb | 630 | bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, |
c6c8fea2 SE |
631 | batif_kobject); |
632 | if (!bat_priv->mesh_obj) { | |
3e34819e | 633 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 634 | BATADV_SYSFS_IF_MESH_SUBDIR); |
c6c8fea2 SE |
635 | goto out; |
636 | } | |
637 | ||
0ff9b86f | 638 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
639 | err = sysfs_create_file(bat_priv->mesh_obj, |
640 | &((*bat_attr)->attr)); | |
641 | if (err) { | |
3e34819e | 642 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 643 | dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, |
3e34819e | 644 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
645 | goto rem_attr; |
646 | } | |
647 | } | |
648 | ||
649 | return 0; | |
650 | ||
651 | rem_attr: | |
0ff9b86f | 652 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
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; | |
657 | out: | |
658 | return -ENOMEM; | |
659 | } | |
660 | ||
5853e22c | 661 | void batadv_sysfs_del_meshif(struct net_device *dev) |
c6c8fea2 | 662 | { |
56303d34 | 663 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 664 | struct batadv_attribute **bat_attr; |
c6c8fea2 | 665 | |
0ff9b86f | 666 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
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 | ||
90f4435d AQ |
673 | /** |
674 | * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan | |
675 | * @dev: netdev of the mesh interface | |
676 | * @vlan: private data of the newly added VLAN interface | |
677 | * | |
678 | * Returns 0 on success and -ENOMEM if any of the structure allocations fails. | |
679 | */ | |
680 | int 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 | /* the untagged LAN uses the root folder to store its "VLAN | |
701 | * specific attributes" | |
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 | ||
720 | rem_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; | |
726 | out: | |
727 | return -ENOMEM; | |
728 | } | |
729 | ||
730 | /** | |
731 | * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN | |
732 | * @bat_priv: the bat priv with all the soft interface information | |
733 | * @vlan: the private data of the VLAN to destroy | |
734 | */ | |
735 | void 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 | ||
0ff9b86f SE |
747 | static ssize_t batadv_show_mesh_iface(struct kobject *kobj, |
748 | struct attribute *attr, char *buff) | |
c6c8fea2 | 749 | { |
0ff9b86f | 750 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 751 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 752 | ssize_t length; |
e9a4f295 | 753 | const char *ifname; |
c6c8fea2 | 754 | |
56303d34 | 755 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 756 | if (!hard_iface) |
c6c8fea2 SE |
757 | return 0; |
758 | ||
e9a4f295 SE |
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); | |
c6c8fea2 | 765 | |
e5d89254 | 766 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
767 | |
768 | return length; | |
769 | } | |
770 | ||
0ff9b86f SE |
771 | static ssize_t batadv_store_mesh_iface(struct kobject *kobj, |
772 | struct attribute *attr, char *buff, | |
773 | size_t count) | |
c6c8fea2 | 774 | { |
0ff9b86f | 775 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 776 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 777 | int status_tmp = -1; |
ed75ccbe | 778 | int ret = count; |
c6c8fea2 | 779 | |
56303d34 | 780 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 781 | if (!hard_iface) |
c6c8fea2 SE |
782 | return count; |
783 | ||
784 | if (buff[count - 1] == '\n') | |
785 | buff[count - 1] = '\0'; | |
786 | ||
787 | if (strlen(buff) >= IFNAMSIZ) { | |
86ceb360 SE |
788 | pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", |
789 | buff); | |
e5d89254 | 790 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
791 | return -EINVAL; |
792 | } | |
793 | ||
794 | if (strncmp(buff, "none", 4) == 0) | |
e9a4f295 | 795 | status_tmp = BATADV_IF_NOT_IN_USE; |
c6c8fea2 | 796 | else |
e9a4f295 | 797 | status_tmp = BATADV_IF_I_WANT_YOU; |
c6c8fea2 | 798 | |
e6c10f43 ML |
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)) | |
ed75ccbe | 804 | goto out; |
c6c8fea2 | 805 | |
ac16d148 | 806 | rtnl_lock(); |
3a4375a9 | 807 | |
e9a4f295 | 808 | if (status_tmp == BATADV_IF_NOT_IN_USE) { |
a15fd361 SE |
809 | batadv_hardif_disable_interface(hard_iface, |
810 | BATADV_IF_CLEANUP_AUTO); | |
3a4375a9 | 811 | goto unlock; |
c6c8fea2 SE |
812 | } |
813 | ||
814 | /* if the interface already is in use */ | |
e9a4f295 | 815 | if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) |
a15fd361 SE |
816 | batadv_hardif_disable_interface(hard_iface, |
817 | BATADV_IF_CLEANUP_AUTO); | |
c6c8fea2 | 818 | |
9563877e | 819 | ret = batadv_hardif_enable_interface(hard_iface, buff); |
c6c8fea2 | 820 | |
3a4375a9 SE |
821 | unlock: |
822 | rtnl_unlock(); | |
ed75ccbe | 823 | out: |
e5d89254 | 824 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
825 | return ret; |
826 | } | |
827 | ||
0ff9b86f SE |
828 | static ssize_t batadv_show_iface_status(struct kobject *kobj, |
829 | struct attribute *attr, char *buff) | |
c6c8fea2 | 830 | { |
0ff9b86f | 831 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 832 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 SE |
833 | ssize_t length; |
834 | ||
56303d34 | 835 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 836 | if (!hard_iface) |
c6c8fea2 SE |
837 | return 0; |
838 | ||
e6c10f43 | 839 | switch (hard_iface->if_status) { |
e9a4f295 | 840 | case BATADV_IF_TO_BE_REMOVED: |
c6c8fea2 SE |
841 | length = sprintf(buff, "disabling\n"); |
842 | break; | |
e9a4f295 | 843 | case BATADV_IF_INACTIVE: |
c6c8fea2 SE |
844 | length = sprintf(buff, "inactive\n"); |
845 | break; | |
e9a4f295 | 846 | case BATADV_IF_ACTIVE: |
c6c8fea2 SE |
847 | length = sprintf(buff, "active\n"); |
848 | break; | |
e9a4f295 | 849 | case BATADV_IF_TO_BE_ACTIVATED: |
c6c8fea2 SE |
850 | length = sprintf(buff, "enabling\n"); |
851 | break; | |
e9a4f295 | 852 | case BATADV_IF_NOT_IN_USE: |
c6c8fea2 SE |
853 | default: |
854 | length = sprintf(buff, "not in use\n"); | |
855 | break; | |
856 | } | |
857 | ||
e5d89254 | 858 | batadv_hardif_free_ref(hard_iface); |
c6c8fea2 SE |
859 | |
860 | return length; | |
861 | } | |
862 | ||
347c80f0 SE |
863 | static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface, |
864 | batadv_store_mesh_iface); | |
865 | static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL); | |
c6c8fea2 | 866 | |
b4d66b87 | 867 | static struct batadv_attribute *batadv_batman_attrs[] = { |
0ff9b86f SE |
868 | &batadv_attr_mesh_iface, |
869 | &batadv_attr_iface_status, | |
c6c8fea2 SE |
870 | NULL, |
871 | }; | |
872 | ||
5853e22c | 873 | int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) |
c6c8fea2 SE |
874 | { |
875 | struct kobject *hardif_kobject = &dev->dev.kobj; | |
b4d66b87 | 876 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
877 | int err; |
878 | ||
036cbfeb SE |
879 | *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, |
880 | hardif_kobject); | |
c6c8fea2 SE |
881 | |
882 | if (!*hardif_obj) { | |
3e34819e | 883 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 884 | BATADV_SYSFS_IF_BAT_SUBDIR); |
c6c8fea2 SE |
885 | goto out; |
886 | } | |
887 | ||
0ff9b86f | 888 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
889 | err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); |
890 | if (err) { | |
3e34819e | 891 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 892 | dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, |
3e34819e | 893 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
894 | goto rem_attr; |
895 | } | |
896 | } | |
897 | ||
898 | return 0; | |
899 | ||
900 | rem_attr: | |
0ff9b86f | 901 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
902 | sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); |
903 | out: | |
904 | return -ENOMEM; | |
905 | } | |
906 | ||
5853e22c | 907 | void batadv_sysfs_del_hardif(struct kobject **hardif_obj) |
c6c8fea2 SE |
908 | { |
909 | kobject_put(*hardif_obj); | |
910 | *hardif_obj = NULL; | |
911 | } | |
c6bda689 | 912 | |
56303d34 | 913 | int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, |
39c75a51 | 914 | enum batadv_uev_action action, const char *data) |
c6bda689 | 915 | { |
5346c35e | 916 | int ret = -ENOMEM; |
c6bda689 AQ |
917 | struct kobject *bat_kobj; |
918 | char *uevent_env[4] = { NULL, NULL, NULL, NULL }; | |
919 | ||
736292c2 | 920 | bat_kobj = &bat_priv->soft_iface->dev.kobj; |
c6bda689 | 921 | |
b98fe24c HS |
922 | uevent_env[0] = kasprintf(GFP_ATOMIC, |
923 | "%s%s", BATADV_UEV_TYPE_VAR, | |
924 | batadv_uev_type_str[type]); | |
c6bda689 AQ |
925 | if (!uevent_env[0]) |
926 | goto out; | |
927 | ||
b98fe24c HS |
928 | uevent_env[1] = kasprintf(GFP_ATOMIC, |
929 | "%s%s", BATADV_UEV_ACTION_VAR, | |
930 | batadv_uev_action_str[action]); | |
c6bda689 AQ |
931 | if (!uevent_env[1]) |
932 | goto out; | |
933 | ||
c6bda689 | 934 | /* If the event is DEL, ignore the data field */ |
39c75a51 | 935 | if (action != BATADV_UEV_DEL) { |
b98fe24c HS |
936 | uevent_env[2] = kasprintf(GFP_ATOMIC, |
937 | "%s%s", BATADV_UEV_DATA_VAR, data); | |
c6bda689 AQ |
938 | if (!uevent_env[2]) |
939 | goto out; | |
c6bda689 AQ |
940 | } |
941 | ||
942 | ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env); | |
943 | out: | |
944 | kfree(uevent_env[0]); | |
945 | kfree(uevent_env[1]); | |
946 | kfree(uevent_env[2]); | |
947 | ||
c6bda689 | 948 | if (ret) |
39c75a51 | 949 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf | 950 | "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n", |
0ff9b86f SE |
951 | batadv_uev_type_str[type], |
952 | batadv_uev_action_str[action], | |
39c75a51 | 953 | (action == BATADV_UEV_DEL ? "NULL" : data), ret); |
c6bda689 AQ |
954 | return ret; |
955 | } |