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ac79cbb9 | 1 | /* Copyright (C) 2010-2017 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> | |
fcafa5e7 | 29 | #include <linux/kref.h> |
1e2c2a4f SE |
30 | #include <linux/netdevice.h> |
31 | #include <linux/printk.h> | |
32 | #include <linux/rculist.h> | |
33 | #include <linux/rcupdate.h> | |
34 | #include <linux/rtnetlink.h> | |
35 | #include <linux/slab.h> | |
1e2c2a4f SE |
36 | #include <linux/stddef.h> |
37 | #include <linux/string.h> | |
38 | #include <linux/stringify.h> | |
77d69d8c | 39 | #include <linux/workqueue.h> |
1e2c2a4f | 40 | |
fcafa5e7 | 41 | #include "bridge_loop_avoidance.h" |
33af49ad | 42 | #include "distributed-arp-table.h" |
1e2c2a4f SE |
43 | #include "gateway_client.h" |
44 | #include "gateway_common.h" | |
c6c8fea2 | 45 | #include "hard-interface.h" |
ba412080 | 46 | #include "log.h" |
1e2c2a4f SE |
47 | #include "network-coding.h" |
48 | #include "packet.h" | |
90f4435d | 49 | #include "soft-interface.h" |
c6c8fea2 | 50 | |
0ff9b86f | 51 | static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) |
3d222bba SE |
52 | { |
53 | struct device *dev = container_of(obj->parent, struct device, kobj); | |
f138694b | 54 | |
3d222bba SE |
55 | return to_net_dev(dev); |
56 | } | |
57 | ||
56303d34 | 58 | static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) |
3d222bba | 59 | { |
0ff9b86f | 60 | struct net_device *net_dev = batadv_kobj_to_netdev(obj); |
f138694b | 61 | |
3d222bba SE |
62 | return netdev_priv(net_dev); |
63 | } | |
c6c8fea2 | 64 | |
90f4435d AQ |
65 | /** |
66 | * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv | |
67 | * @obj: kobject to covert | |
68 | * | |
62fe710f | 69 | * Return: the associated batadv_priv struct. |
90f4435d AQ |
70 | */ |
71 | static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) | |
72 | { | |
73 | /* VLAN specific attributes are located in the root sysfs folder if they | |
74 | * refer to the untagged VLAN.. | |
75 | */ | |
76 | if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) | |
77 | return batadv_kobj_to_batpriv(obj); | |
78 | ||
79 | /* ..while the attributes for the tagged vlans are located in | |
80 | * the in the corresponding "vlan%VID" subfolder | |
81 | */ | |
82 | return batadv_kobj_to_batpriv(obj->parent); | |
83 | } | |
84 | ||
85 | /** | |
86 | * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct | |
7afcbbef | 87 | * @bat_priv: the bat priv with all the soft interface information |
90f4435d AQ |
88 | * @obj: kobject to covert |
89 | * | |
62fe710f | 90 | * Return: the associated softif_vlan struct if found, NULL otherwise. |
90f4435d AQ |
91 | */ |
92 | static struct batadv_softif_vlan * | |
93 | batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) | |
94 | { | |
95 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
96 | ||
97 | rcu_read_lock(); | |
98 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
99 | if (vlan_tmp->kobj != obj) | |
100 | continue; | |
101 | ||
6be4d30c | 102 | if (!kref_get_unless_zero(&vlan_tmp->refcount)) |
90f4435d AQ |
103 | continue; |
104 | ||
105 | vlan = vlan_tmp; | |
106 | break; | |
107 | } | |
108 | rcu_read_unlock(); | |
109 | ||
110 | return vlan; | |
111 | } | |
112 | ||
347c80f0 SE |
113 | #define BATADV_UEV_TYPE_VAR "BATTYPE=" |
114 | #define BATADV_UEV_ACTION_VAR "BATACTION=" | |
115 | #define BATADV_UEV_DATA_VAR "BATDATA=" | |
c6bda689 | 116 | |
0ff9b86f | 117 | static char *batadv_uev_action_str[] = { |
c6bda689 AQ |
118 | "add", |
119 | "del", | |
cd9c7bfb SW |
120 | "change", |
121 | "loopdetect", | |
c6bda689 AQ |
122 | }; |
123 | ||
0ff9b86f | 124 | static char *batadv_uev_type_str[] = { |
cd9c7bfb SW |
125 | "gw", |
126 | "bla", | |
c6bda689 AQ |
127 | }; |
128 | ||
90f4435d AQ |
129 | /* Use this, if you have customized show and store functions for vlan attrs */ |
130 | #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ | |
131 | struct batadv_attribute batadv_attr_vlan_##_name = { \ | |
132 | .attr = {.name = __stringify(_name), \ | |
133 | .mode = _mode }, \ | |
134 | .show = _show, \ | |
135 | .store = _store, \ | |
2b64df20 | 136 | } |
90f4435d | 137 | |
c6c8fea2 | 138 | /* Use this, if you have customized show and store functions */ |
347c80f0 | 139 | #define BATADV_ATTR(_name, _mode, _show, _store) \ |
b4d66b87 | 140 | struct batadv_attribute batadv_attr_##_name = { \ |
347c80f0 SE |
141 | .attr = {.name = __stringify(_name), \ |
142 | .mode = _mode }, \ | |
143 | .show = _show, \ | |
144 | .store = _store, \ | |
2b64df20 | 145 | } |
c6c8fea2 | 146 | |
347c80f0 | 147 | #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ |
0ff9b86f SE |
148 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
149 | struct attribute *attr, char *buff, \ | |
150 | size_t count) \ | |
c6c8fea2 | 151 | { \ |
0ff9b86f | 152 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 153 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 154 | \ |
0ff9b86f SE |
155 | return __batadv_store_bool_attr(buff, count, _post_func, attr, \ |
156 | &bat_priv->_name, net_dev); \ | |
c6c8fea2 SE |
157 | } |
158 | ||
347c80f0 | 159 | #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ |
0ff9b86f SE |
160 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
161 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 162 | { \ |
56303d34 | 163 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 164 | \ |
c6c8fea2 SE |
165 | return sprintf(buff, "%s\n", \ |
166 | atomic_read(&bat_priv->_name) == 0 ? \ | |
167 | "disabled" : "enabled"); \ | |
168 | } \ | |
169 | ||
f245c38b | 170 | /* Use this, if you are going to turn a [name] in the soft-interface |
9cfc7bd6 SE |
171 | * (bat_priv) on or off |
172 | */ | |
347c80f0 SE |
173 | #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \ |
174 | static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ | |
175 | static BATADV_ATTR_SIF_SHOW_BOOL(_name) \ | |
176 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
177 | batadv_store_##_name) | |
c6c8fea2 | 178 | |
6f70eb75 | 179 | #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ |
0ff9b86f SE |
180 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
181 | struct attribute *attr, char *buff, \ | |
182 | size_t count) \ | |
c6c8fea2 | 183 | { \ |
0ff9b86f | 184 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 185 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 186 | \ |
0ff9b86f SE |
187 | return __batadv_store_uint_attr(buff, count, _min, _max, \ |
188 | _post_func, attr, \ | |
6f70eb75 | 189 | &bat_priv->_var, net_dev); \ |
c6c8fea2 SE |
190 | } |
191 | ||
6f70eb75 | 192 | #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ |
0ff9b86f SE |
193 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
194 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 195 | { \ |
56303d34 | 196 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 197 | \ |
6f70eb75 | 198 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ |
c6c8fea2 SE |
199 | } \ |
200 | ||
f245c38b | 201 | /* Use this, if you are going to set [name] in the soft-interface |
9cfc7bd6 SE |
202 | * (bat_priv) to an unsigned integer value |
203 | */ | |
6f70eb75 AQ |
204 | #define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ |
205 | static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\ | |
206 | static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ | |
347c80f0 SE |
207 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ |
208 | batadv_store_##_name) | |
c6c8fea2 | 209 | |
90f4435d AQ |
210 | #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ |
211 | ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ | |
212 | struct attribute *attr, char *buff, \ | |
213 | size_t count) \ | |
214 | { \ | |
215 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
216 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
217 | kobj); \ | |
218 | size_t res = __batadv_store_bool_attr(buff, count, _post_func, \ | |
219 | attr, &vlan->_name, \ | |
220 | bat_priv->soft_iface); \ | |
f138694b | 221 | \ |
9c3bf081 | 222 | batadv_softif_vlan_put(vlan); \ |
90f4435d AQ |
223 | return res; \ |
224 | } | |
225 | ||
226 | #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
227 | ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ | |
228 | struct attribute *attr, char *buff) \ | |
229 | { \ | |
230 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
231 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
232 | kobj); \ | |
233 | size_t res = sprintf(buff, "%s\n", \ | |
234 | atomic_read(&vlan->_name) == 0 ? \ | |
235 | "disabled" : "enabled"); \ | |
f138694b | 236 | \ |
9c3bf081 | 237 | batadv_softif_vlan_put(vlan); \ |
90f4435d AQ |
238 | return res; \ |
239 | } | |
240 | ||
241 | /* Use this, if you are going to turn a [name] in the vlan struct on or off */ | |
242 | #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \ | |
243 | static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ | |
244 | static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
245 | static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \ | |
246 | batadv_store_vlan_##_name) | |
0744ff8f LL |
247 | |
248 | #define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ | |
249 | ssize_t batadv_store_##_name(struct kobject *kobj, \ | |
250 | struct attribute *attr, char *buff, \ | |
251 | size_t count) \ | |
252 | { \ | |
253 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ | |
254 | struct batadv_hard_iface *hard_iface; \ | |
255 | ssize_t length; \ | |
256 | \ | |
257 | hard_iface = batadv_hardif_get_by_netdev(net_dev); \ | |
258 | if (!hard_iface) \ | |
259 | return 0; \ | |
260 | \ | |
261 | length = __batadv_store_uint_attr(buff, count, _min, _max, \ | |
262 | _post_func, attr, \ | |
263 | &hard_iface->_var, net_dev); \ | |
264 | \ | |
265 | batadv_hardif_put(hard_iface); \ | |
266 | return length; \ | |
267 | } | |
268 | ||
269 | #define BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ | |
270 | ssize_t batadv_show_##_name(struct kobject *kobj, \ | |
271 | struct attribute *attr, char *buff) \ | |
272 | { \ | |
273 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ | |
274 | struct batadv_hard_iface *hard_iface; \ | |
275 | ssize_t length; \ | |
276 | \ | |
277 | hard_iface = batadv_hardif_get_by_netdev(net_dev); \ | |
278 | if (!hard_iface) \ | |
279 | return 0; \ | |
280 | \ | |
281 | length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var)); \ | |
282 | \ | |
283 | batadv_hardif_put(hard_iface); \ | |
284 | return length; \ | |
285 | } | |
286 | ||
287 | /* Use this, if you are going to set [name] in hard_iface to an | |
288 | * unsigned integer value | |
289 | */ | |
290 | #define BATADV_ATTR_HIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ | |
291 | static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, \ | |
292 | _max, _post_func) \ | |
293 | static BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ | |
294 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
295 | batadv_store_##_name) | |
c6c8fea2 | 296 | |
0ff9b86f SE |
297 | static int batadv_store_bool_attr(char *buff, size_t count, |
298 | struct net_device *net_dev, | |
9e728e84 SW |
299 | const char *attr_name, atomic_t *attr, |
300 | bool *changed) | |
c6c8fea2 SE |
301 | { |
302 | int enabled = -1; | |
303 | ||
9e728e84 SW |
304 | *changed = false; |
305 | ||
c6c8fea2 SE |
306 | if (buff[count - 1] == '\n') |
307 | buff[count - 1] = '\0'; | |
308 | ||
309 | if ((strncmp(buff, "1", 2) == 0) || | |
310 | (strncmp(buff, "enable", 7) == 0) || | |
311 | (strncmp(buff, "enabled", 8) == 0)) | |
312 | enabled = 1; | |
313 | ||
314 | if ((strncmp(buff, "0", 2) == 0) || | |
315 | (strncmp(buff, "disable", 8) == 0) || | |
316 | (strncmp(buff, "disabled", 9) == 0)) | |
317 | enabled = 0; | |
318 | ||
319 | if (enabled < 0) { | |
3e34819e SE |
320 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
321 | attr_name, buff); | |
c6c8fea2 SE |
322 | return -EINVAL; |
323 | } | |
324 | ||
325 | if (atomic_read(attr) == enabled) | |
326 | return count; | |
327 | ||
3e34819e SE |
328 | batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, |
329 | atomic_read(attr) == 1 ? "enabled" : "disabled", | |
330 | enabled == 1 ? "enabled" : "disabled"); | |
c6c8fea2 | 331 | |
9e728e84 SW |
332 | *changed = true; |
333 | ||
95c96174 | 334 | atomic_set(attr, (unsigned int)enabled); |
c6c8fea2 SE |
335 | return count; |
336 | } | |
337 | ||
0ff9b86f SE |
338 | static inline ssize_t |
339 | __batadv_store_bool_attr(char *buff, size_t count, | |
340 | void (*post_func)(struct net_device *), | |
341 | struct attribute *attr, | |
342 | atomic_t *attr_store, struct net_device *net_dev) | |
c6c8fea2 | 343 | { |
9e728e84 | 344 | bool changed; |
c6c8fea2 SE |
345 | int ret; |
346 | ||
0ff9b86f | 347 | ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, |
9e728e84 SW |
348 | attr_store, &changed); |
349 | if (post_func && changed) | |
c6c8fea2 SE |
350 | post_func(net_dev); |
351 | ||
352 | return ret; | |
353 | } | |
354 | ||
0ff9b86f SE |
355 | static int batadv_store_uint_attr(const char *buff, size_t count, |
356 | struct net_device *net_dev, | |
357 | const char *attr_name, | |
358 | unsigned int min, unsigned int max, | |
359 | atomic_t *attr) | |
c6c8fea2 SE |
360 | { |
361 | unsigned long uint_val; | |
362 | int ret; | |
363 | ||
25a92b13 | 364 | ret = kstrtoul(buff, 10, &uint_val); |
c6c8fea2 | 365 | if (ret) { |
3e34819e SE |
366 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
367 | attr_name, buff); | |
c6c8fea2 SE |
368 | return -EINVAL; |
369 | } | |
370 | ||
371 | if (uint_val < min) { | |
3e34819e SE |
372 | batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", |
373 | attr_name, uint_val, min); | |
c6c8fea2 SE |
374 | return -EINVAL; |
375 | } | |
376 | ||
377 | if (uint_val > max) { | |
3e34819e SE |
378 | batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", |
379 | attr_name, uint_val, max); | |
c6c8fea2 SE |
380 | return -EINVAL; |
381 | } | |
382 | ||
383 | if (atomic_read(attr) == uint_val) | |
384 | return count; | |
385 | ||
3e34819e SE |
386 | batadv_info(net_dev, "%s: Changing from: %i to: %lu\n", |
387 | attr_name, atomic_read(attr), uint_val); | |
c6c8fea2 SE |
388 | |
389 | atomic_set(attr, uint_val); | |
390 | return count; | |
391 | } | |
392 | ||
c149ca72 AQ |
393 | static ssize_t __batadv_store_uint_attr(const char *buff, size_t count, |
394 | int min, int max, | |
395 | void (*post_func)(struct net_device *), | |
396 | const struct attribute *attr, | |
397 | atomic_t *attr_store, | |
398 | struct net_device *net_dev) | |
c6c8fea2 SE |
399 | { |
400 | int ret; | |
401 | ||
0ff9b86f SE |
402 | ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max, |
403 | attr_store); | |
c6c8fea2 SE |
404 | if (post_func && ret) |
405 | post_func(net_dev); | |
406 | ||
407 | return ret; | |
408 | } | |
409 | ||
0ff9b86f SE |
410 | static ssize_t batadv_show_bat_algo(struct kobject *kobj, |
411 | struct attribute *attr, char *buff) | |
ea3d2fd1 | 412 | { |
56303d34 | 413 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
f138694b | 414 | |
29824a55 | 415 | return sprintf(buff, "%s\n", bat_priv->algo_ops->name); |
ea3d2fd1 ML |
416 | } |
417 | ||
4e820e72 | 418 | static void batadv_post_gw_reselect(struct net_device *net_dev) |
c6c8fea2 | 419 | { |
56303d34 | 420 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
f138694b | 421 | |
4e820e72 | 422 | batadv_gw_reselect(bat_priv); |
c6c8fea2 SE |
423 | } |
424 | ||
0ff9b86f SE |
425 | static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, |
426 | char *buff) | |
c6c8fea2 | 427 | { |
56303d34 | 428 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
c6c8fea2 SE |
429 | int bytes_written; |
430 | ||
a8d8d1de AQ |
431 | /* GW mode is not available if the routing algorithm in use does not |
432 | * implement the GW API | |
433 | */ | |
434 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
435 | !bat_priv->algo_ops->gw.is_eligible) | |
436 | return -ENOENT; | |
437 | ||
3a24a63e | 438 | switch (atomic_read(&bat_priv->gw.mode)) { |
cd646ab1 | 439 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 SE |
440 | bytes_written = sprintf(buff, "%s\n", |
441 | BATADV_GW_MODE_CLIENT_NAME); | |
c6c8fea2 | 442 | break; |
cd646ab1 | 443 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 SE |
444 | bytes_written = sprintf(buff, "%s\n", |
445 | BATADV_GW_MODE_SERVER_NAME); | |
c6c8fea2 SE |
446 | break; |
447 | default: | |
97ea4ba1 SE |
448 | bytes_written = sprintf(buff, "%s\n", |
449 | BATADV_GW_MODE_OFF_NAME); | |
c6c8fea2 SE |
450 | break; |
451 | } | |
452 | ||
453 | return bytes_written; | |
454 | } | |
455 | ||
0ff9b86f SE |
456 | static ssize_t batadv_store_gw_mode(struct kobject *kobj, |
457 | struct attribute *attr, char *buff, | |
458 | size_t count) | |
c6c8fea2 | 459 | { |
0ff9b86f | 460 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 461 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
c6c8fea2 SE |
462 | char *curr_gw_mode_str; |
463 | int gw_mode_tmp = -1; | |
464 | ||
a8d8d1de AQ |
465 | /* toggling GW mode is allowed only if the routing algorithm in use |
466 | * provides the GW API | |
467 | */ | |
468 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
469 | !bat_priv->algo_ops->gw.is_eligible) | |
470 | return -EINVAL; | |
471 | ||
c6c8fea2 SE |
472 | if (buff[count - 1] == '\n') |
473 | buff[count - 1] = '\0'; | |
474 | ||
97ea4ba1 SE |
475 | if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, |
476 | strlen(BATADV_GW_MODE_OFF_NAME)) == 0) | |
cd646ab1 | 477 | gw_mode_tmp = BATADV_GW_MODE_OFF; |
c6c8fea2 | 478 | |
97ea4ba1 SE |
479 | if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, |
480 | strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) | |
cd646ab1 | 481 | gw_mode_tmp = BATADV_GW_MODE_CLIENT; |
c6c8fea2 | 482 | |
97ea4ba1 SE |
483 | if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, |
484 | strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) | |
cd646ab1 | 485 | gw_mode_tmp = BATADV_GW_MODE_SERVER; |
c6c8fea2 SE |
486 | |
487 | if (gw_mode_tmp < 0) { | |
3e34819e SE |
488 | batadv_info(net_dev, |
489 | "Invalid parameter for 'gw mode' setting received: %s\n", | |
490 | buff); | |
c6c8fea2 SE |
491 | return -EINVAL; |
492 | } | |
493 | ||
3a24a63e | 494 | if (atomic_read(&bat_priv->gw.mode) == gw_mode_tmp) |
c6c8fea2 SE |
495 | return count; |
496 | ||
3a24a63e | 497 | switch (atomic_read(&bat_priv->gw.mode)) { |
cd646ab1 | 498 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 | 499 | curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; |
c6c8fea2 | 500 | break; |
cd646ab1 | 501 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 | 502 | curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; |
c6c8fea2 SE |
503 | break; |
504 | default: | |
97ea4ba1 | 505 | curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; |
c6c8fea2 SE |
506 | break; |
507 | } | |
508 | ||
3e34819e SE |
509 | batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", |
510 | curr_gw_mode_str, buff); | |
c6c8fea2 | 511 | |
f3163181 AQ |
512 | /* Invoking batadv_gw_reselect() is not enough to really de-select the |
513 | * current GW. It will only instruct the gateway client code to perform | |
514 | * a re-election the next time that this is needed. | |
515 | * | |
516 | * When gw client mode is being switched off the current GW must be | |
517 | * de-selected explicitly otherwise no GW_ADD uevent is thrown on | |
518 | * client mode re-activation. This is operation is performed in | |
519 | * batadv_gw_check_client_stop(). | |
520 | */ | |
4e820e72 | 521 | batadv_gw_reselect(bat_priv); |
c6eaa3f0 AQ |
522 | /* always call batadv_gw_check_client_stop() before changing the gateway |
523 | * state | |
524 | */ | |
525 | batadv_gw_check_client_stop(bat_priv); | |
3a24a63e | 526 | atomic_set(&bat_priv->gw.mode, (unsigned int)gw_mode_tmp); |
414254e3 | 527 | batadv_gw_tvlv_container_update(bat_priv); |
c6c8fea2 SE |
528 | return count; |
529 | } | |
530 | ||
08686943 AQ |
531 | static ssize_t batadv_show_gw_sel_class(struct kobject *kobj, |
532 | struct attribute *attr, char *buff) | |
533 | { | |
534 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
535 | ||
a8d8d1de AQ |
536 | /* GW selection class is not available if the routing algorithm in use |
537 | * does not implement the GW API | |
538 | */ | |
539 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
540 | !bat_priv->algo_ops->gw.is_eligible) | |
541 | return -ENOENT; | |
542 | ||
08686943 AQ |
543 | if (bat_priv->algo_ops->gw.show_sel_class) |
544 | return bat_priv->algo_ops->gw.show_sel_class(bat_priv, buff); | |
545 | ||
546 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->gw.sel_class)); | |
547 | } | |
548 | ||
549 | static ssize_t batadv_store_gw_sel_class(struct kobject *kobj, | |
550 | struct attribute *attr, char *buff, | |
551 | size_t count) | |
552 | { | |
553 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
554 | ||
a8d8d1de AQ |
555 | /* setting the GW selection class is allowed only if the routing |
556 | * algorithm in use implements the GW API | |
557 | */ | |
558 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
559 | !bat_priv->algo_ops->gw.is_eligible) | |
560 | return -EINVAL; | |
561 | ||
08686943 AQ |
562 | if (buff[count - 1] == '\n') |
563 | buff[count - 1] = '\0'; | |
564 | ||
565 | if (bat_priv->algo_ops->gw.store_sel_class) | |
566 | return bat_priv->algo_ops->gw.store_sel_class(bat_priv, buff, | |
567 | count); | |
568 | ||
569 | return __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE, | |
570 | batadv_post_gw_reselect, attr, | |
571 | &bat_priv->gw.sel_class, | |
572 | bat_priv->soft_iface); | |
573 | } | |
574 | ||
0ff9b86f SE |
575 | static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, |
576 | struct attribute *attr, char *buff) | |
c6c8fea2 | 577 | { |
56303d34 | 578 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
6b5e971a | 579 | u32 down, up; |
414254e3 ML |
580 | |
581 | down = atomic_read(&bat_priv->gw.bandwidth_down); | |
582 | up = atomic_read(&bat_priv->gw.bandwidth_up); | |
583 | ||
584 | return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10, | |
585 | down % 10, up / 10, up % 10); | |
c6c8fea2 SE |
586 | } |
587 | ||
0ff9b86f SE |
588 | static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, |
589 | struct attribute *attr, char *buff, | |
590 | size_t count) | |
c6c8fea2 | 591 | { |
0ff9b86f | 592 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
c6c8fea2 SE |
593 | |
594 | if (buff[count - 1] == '\n') | |
595 | buff[count - 1] = '\0'; | |
596 | ||
84d5e5e0 | 597 | return batadv_gw_bandwidth_set(net_dev, buff, count); |
c6c8fea2 SE |
598 | } |
599 | ||
c42edfe3 AQ |
600 | /** |
601 | * batadv_show_isolation_mark - print the current isolation mark/mask | |
602 | * @kobj: kobject representing the private mesh sysfs directory | |
603 | * @attr: the batman-adv attribute the user is interacting with | |
604 | * @buff: the buffer that will contain the data to send back to the user | |
605 | * | |
62fe710f | 606 | * Return: the number of bytes written into 'buff' on success or a negative |
c42edfe3 AQ |
607 | * error code in case of failure |
608 | */ | |
609 | static ssize_t batadv_show_isolation_mark(struct kobject *kobj, | |
610 | struct attribute *attr, char *buff) | |
611 | { | |
612 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
613 | ||
614 | return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark, | |
615 | bat_priv->isolation_mark_mask); | |
616 | } | |
617 | ||
618 | /** | |
619 | * batadv_store_isolation_mark - parse and store the isolation mark/mask entered | |
620 | * by the user | |
621 | * @kobj: kobject representing the private mesh sysfs directory | |
622 | * @attr: the batman-adv attribute the user is interacting with | |
623 | * @buff: the buffer containing the user data | |
624 | * @count: number of bytes in the buffer | |
625 | * | |
62fe710f | 626 | * Return: 'count' on success or a negative error code in case of failure |
c42edfe3 AQ |
627 | */ |
628 | static ssize_t batadv_store_isolation_mark(struct kobject *kobj, | |
629 | struct attribute *attr, char *buff, | |
630 | size_t count) | |
631 | { | |
632 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
633 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
6b5e971a | 634 | u32 mark, mask; |
c42edfe3 AQ |
635 | char *mask_ptr; |
636 | ||
637 | /* parse the mask if it has been specified, otherwise assume the mask is | |
638 | * the biggest possible | |
639 | */ | |
640 | mask = 0xFFFFFFFF; | |
641 | mask_ptr = strchr(buff, '/'); | |
642 | if (mask_ptr) { | |
643 | *mask_ptr = '\0'; | |
644 | mask_ptr++; | |
645 | ||
646 | /* the mask must be entered in hex base as it is going to be a | |
647 | * bitmask and not a prefix length | |
648 | */ | |
649 | if (kstrtou32(mask_ptr, 16, &mask) < 0) | |
650 | return -EINVAL; | |
651 | } | |
652 | ||
653 | /* the mark can be entered in any base */ | |
654 | if (kstrtou32(buff, 0, &mark) < 0) | |
655 | return -EINVAL; | |
656 | ||
657 | bat_priv->isolation_mark_mask = mask; | |
658 | /* erase bits not covered by the mask */ | |
659 | bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask; | |
660 | ||
661 | batadv_info(net_dev, | |
662 | "New skb mark for extended isolation: %#.8x/%#.8x\n", | |
663 | bat_priv->isolation_mark, bat_priv->isolation_mark_mask); | |
664 | ||
665 | return count; | |
666 | } | |
667 | ||
507b37cf SE |
668 | BATADV_ATTR_SIF_BOOL(aggregated_ogms, 0644, NULL); |
669 | BATADV_ATTR_SIF_BOOL(bonding, 0644, NULL); | |
7a5cc242 | 670 | #ifdef CONFIG_BATMAN_ADV_BLA |
507b37cf | 671 | BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, 0644, batadv_bla_status_update); |
7a5cc242 | 672 | #endif |
33af49ad | 673 | #ifdef CONFIG_BATMAN_ADV_DAT |
507b37cf | 674 | BATADV_ATTR_SIF_BOOL(distributed_arp_table, 0644, batadv_dat_status_update); |
33af49ad | 675 | #endif |
507b37cf SE |
676 | BATADV_ATTR_SIF_BOOL(fragmentation, 0644, batadv_update_min_mtu); |
677 | static BATADV_ATTR(routing_algo, 0444, batadv_show_bat_algo, NULL); | |
678 | static BATADV_ATTR(gw_mode, 0644, batadv_show_gw_mode, batadv_store_gw_mode); | |
679 | BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, 0644, 2 * BATADV_JITTER, | |
680 | INT_MAX, NULL); | |
681 | BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, 0644, 0, BATADV_TQ_MAX_VALUE, | |
682 | NULL); | |
683 | static BATADV_ATTR(gw_sel_class, 0644, batadv_show_gw_sel_class, | |
08686943 | 684 | batadv_store_gw_sel_class); |
507b37cf | 685 | static BATADV_ATTR(gw_bandwidth, 0644, batadv_show_gw_bwidth, |
347c80f0 | 686 | batadv_store_gw_bwidth); |
1d8ab8d3 | 687 | #ifdef CONFIG_BATMAN_ADV_MCAST |
507b37cf | 688 | BATADV_ATTR_SIF_BOOL(multicast_mode, 0644, NULL); |
1d8ab8d3 | 689 | #endif |
c6c8fea2 | 690 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
507b37cf | 691 | BATADV_ATTR_SIF_UINT(log_level, log_level, 0644, 0, BATADV_DBG_ALL, NULL); |
c6c8fea2 | 692 | #endif |
d353d8d4 | 693 | #ifdef CONFIG_BATMAN_ADV_NC |
507b37cf | 694 | BATADV_ATTR_SIF_BOOL(network_coding, 0644, batadv_nc_status_update); |
d353d8d4 | 695 | #endif |
507b37cf SE |
696 | static BATADV_ATTR(isolation_mark, 0644, batadv_show_isolation_mark, |
697 | batadv_store_isolation_mark); | |
c6c8fea2 | 698 | |
b4d66b87 | 699 | static struct batadv_attribute *batadv_mesh_attrs[] = { |
0ff9b86f SE |
700 | &batadv_attr_aggregated_ogms, |
701 | &batadv_attr_bonding, | |
7a5cc242 | 702 | #ifdef CONFIG_BATMAN_ADV_BLA |
0ff9b86f | 703 | &batadv_attr_bridge_loop_avoidance, |
33af49ad AQ |
704 | #endif |
705 | #ifdef CONFIG_BATMAN_ADV_DAT | |
706 | &batadv_attr_distributed_arp_table, | |
1d8ab8d3 LL |
707 | #endif |
708 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
709 | &batadv_attr_multicast_mode, | |
7a5cc242 | 710 | #endif |
0ff9b86f | 711 | &batadv_attr_fragmentation, |
0ff9b86f SE |
712 | &batadv_attr_routing_algo, |
713 | &batadv_attr_gw_mode, | |
714 | &batadv_attr_orig_interval, | |
715 | &batadv_attr_hop_penalty, | |
716 | &batadv_attr_gw_sel_class, | |
717 | &batadv_attr_gw_bandwidth, | |
c6c8fea2 | 718 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
0ff9b86f | 719 | &batadv_attr_log_level, |
d353d8d4 MH |
720 | #endif |
721 | #ifdef CONFIG_BATMAN_ADV_NC | |
722 | &batadv_attr_network_coding, | |
c6c8fea2 | 723 | #endif |
c42edfe3 | 724 | &batadv_attr_isolation_mark, |
c6c8fea2 SE |
725 | NULL, |
726 | }; | |
727 | ||
507b37cf | 728 | BATADV_ATTR_VLAN_BOOL(ap_isolation, 0644, NULL); |
b8cbd81d | 729 | |
f34ac9d4 | 730 | /* array of vlan specific sysfs attributes */ |
90f4435d | 731 | static struct batadv_attribute *batadv_vlan_attrs[] = { |
b8cbd81d | 732 | &batadv_attr_vlan_ap_isolation, |
90f4435d AQ |
733 | NULL, |
734 | }; | |
735 | ||
5853e22c | 736 | int batadv_sysfs_add_meshif(struct net_device *dev) |
c6c8fea2 SE |
737 | { |
738 | struct kobject *batif_kobject = &dev->dev.kobj; | |
56303d34 | 739 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 740 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
741 | int err; |
742 | ||
036cbfeb | 743 | bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, |
c6c8fea2 SE |
744 | batif_kobject); |
745 | if (!bat_priv->mesh_obj) { | |
3e34819e | 746 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 747 | BATADV_SYSFS_IF_MESH_SUBDIR); |
c6c8fea2 SE |
748 | goto out; |
749 | } | |
750 | ||
0ff9b86f | 751 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
752 | err = sysfs_create_file(bat_priv->mesh_obj, |
753 | &((*bat_attr)->attr)); | |
754 | if (err) { | |
3e34819e | 755 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 756 | dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, |
3e34819e | 757 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
758 | goto rem_attr; |
759 | } | |
760 | } | |
761 | ||
762 | return 0; | |
763 | ||
764 | rem_attr: | |
0ff9b86f | 765 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
766 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
767 | ||
f4acb108 SE |
768 | kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
769 | kobject_del(bat_priv->mesh_obj); | |
c6c8fea2 SE |
770 | kobject_put(bat_priv->mesh_obj); |
771 | bat_priv->mesh_obj = NULL; | |
772 | out: | |
773 | return -ENOMEM; | |
774 | } | |
775 | ||
5853e22c | 776 | void batadv_sysfs_del_meshif(struct net_device *dev) |
c6c8fea2 | 777 | { |
56303d34 | 778 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 779 | struct batadv_attribute **bat_attr; |
c6c8fea2 | 780 | |
0ff9b86f | 781 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
782 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
783 | ||
f4acb108 SE |
784 | kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
785 | kobject_del(bat_priv->mesh_obj); | |
c6c8fea2 SE |
786 | kobject_put(bat_priv->mesh_obj); |
787 | bat_priv->mesh_obj = NULL; | |
788 | } | |
789 | ||
90f4435d AQ |
790 | /** |
791 | * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan | |
792 | * @dev: netdev of the mesh interface | |
793 | * @vlan: private data of the newly added VLAN interface | |
794 | * | |
62fe710f | 795 | * Return: 0 on success and -ENOMEM if any of the structure allocations fails. |
90f4435d AQ |
796 | */ |
797 | int batadv_sysfs_add_vlan(struct net_device *dev, | |
798 | struct batadv_softif_vlan *vlan) | |
799 | { | |
800 | char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5]; | |
801 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
802 | struct batadv_attribute **bat_attr; | |
803 | int err; | |
804 | ||
805 | if (vlan->vid & BATADV_VLAN_HAS_TAG) { | |
806 | sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu", | |
807 | vlan->vid & VLAN_VID_MASK); | |
808 | ||
809 | vlan->kobj = kobject_create_and_add(vlan_subdir, | |
810 | bat_priv->mesh_obj); | |
811 | if (!vlan->kobj) { | |
812 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", | |
813 | dev->name, vlan_subdir); | |
814 | goto out; | |
815 | } | |
816 | } else { | |
817 | /* the untagged LAN uses the root folder to store its "VLAN | |
818 | * specific attributes" | |
819 | */ | |
820 | vlan->kobj = bat_priv->mesh_obj; | |
821 | kobject_get(bat_priv->mesh_obj); | |
822 | } | |
823 | ||
824 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) { | |
825 | err = sysfs_create_file(vlan->kobj, | |
826 | &((*bat_attr)->attr)); | |
827 | if (err) { | |
828 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", | |
829 | dev->name, vlan_subdir, | |
830 | ((*bat_attr)->attr).name); | |
831 | goto rem_attr; | |
832 | } | |
833 | } | |
834 | ||
835 | return 0; | |
836 | ||
837 | rem_attr: | |
838 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
839 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
840 | ||
f4acb108 SE |
841 | if (vlan->kobj != bat_priv->mesh_obj) { |
842 | kobject_uevent(vlan->kobj, KOBJ_REMOVE); | |
843 | kobject_del(vlan->kobj); | |
844 | } | |
90f4435d AQ |
845 | kobject_put(vlan->kobj); |
846 | vlan->kobj = NULL; | |
847 | out: | |
848 | return -ENOMEM; | |
849 | } | |
850 | ||
851 | /** | |
852 | * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN | |
853 | * @bat_priv: the bat priv with all the soft interface information | |
854 | * @vlan: the private data of the VLAN to destroy | |
855 | */ | |
856 | void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, | |
857 | struct batadv_softif_vlan *vlan) | |
858 | { | |
859 | struct batadv_attribute **bat_attr; | |
860 | ||
861 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
862 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
863 | ||
f4acb108 SE |
864 | if (vlan->kobj != bat_priv->mesh_obj) { |
865 | kobject_uevent(vlan->kobj, KOBJ_REMOVE); | |
866 | kobject_del(vlan->kobj); | |
867 | } | |
90f4435d AQ |
868 | kobject_put(vlan->kobj); |
869 | vlan->kobj = NULL; | |
870 | } | |
871 | ||
0ff9b86f SE |
872 | static ssize_t batadv_show_mesh_iface(struct kobject *kobj, |
873 | struct attribute *attr, char *buff) | |
c6c8fea2 | 874 | { |
0ff9b86f | 875 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 876 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 877 | ssize_t length; |
e9a4f295 | 878 | const char *ifname; |
c6c8fea2 | 879 | |
56303d34 | 880 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 881 | if (!hard_iface) |
c6c8fea2 SE |
882 | return 0; |
883 | ||
e9a4f295 SE |
884 | if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) |
885 | ifname = "none"; | |
886 | else | |
887 | ifname = hard_iface->soft_iface->name; | |
888 | ||
889 | length = sprintf(buff, "%s\n", ifname); | |
c6c8fea2 | 890 | |
82047ad7 | 891 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
892 | |
893 | return length; | |
894 | } | |
895 | ||
77d69d8c SE |
896 | /** |
897 | * batadv_store_mesh_iface_finish - store new hardif mesh_iface state | |
898 | * @net_dev: netdevice to add/remove to/from batman-adv soft-interface | |
899 | * @ifname: name of soft-interface to modify | |
900 | * | |
901 | * Changes the parts of the hard+soft interface which can not be modified under | |
902 | * sysfs lock (to prevent deadlock situations). | |
903 | * | |
904 | * Return: 0 on success, 0 < on failure | |
905 | */ | |
906 | static int batadv_store_mesh_iface_finish(struct net_device *net_dev, | |
907 | char ifname[IFNAMSIZ]) | |
c6c8fea2 | 908 | { |
2cd45a06 | 909 | struct net *net = dev_net(net_dev); |
56303d34 | 910 | struct batadv_hard_iface *hard_iface; |
77d69d8c SE |
911 | int status_tmp; |
912 | int ret = 0; | |
913 | ||
914 | ASSERT_RTNL(); | |
c6c8fea2 | 915 | |
56303d34 | 916 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 917 | if (!hard_iface) |
77d69d8c | 918 | return 0; |
c6c8fea2 | 919 | |
77d69d8c | 920 | if (strncmp(ifname, "none", 4) == 0) |
e9a4f295 | 921 | status_tmp = BATADV_IF_NOT_IN_USE; |
c6c8fea2 | 922 | else |
e9a4f295 | 923 | status_tmp = BATADV_IF_I_WANT_YOU; |
c6c8fea2 | 924 | |
e6c10f43 ML |
925 | if (hard_iface->if_status == status_tmp) |
926 | goto out; | |
927 | ||
928 | if ((hard_iface->soft_iface) && | |
77d69d8c | 929 | (strncmp(hard_iface->soft_iface->name, ifname, IFNAMSIZ) == 0)) |
ed75ccbe | 930 | goto out; |
c6c8fea2 | 931 | |
e9a4f295 | 932 | if (status_tmp == BATADV_IF_NOT_IN_USE) { |
a15fd361 SE |
933 | batadv_hardif_disable_interface(hard_iface, |
934 | BATADV_IF_CLEANUP_AUTO); | |
77d69d8c | 935 | goto out; |
c6c8fea2 SE |
936 | } |
937 | ||
938 | /* if the interface already is in use */ | |
e9a4f295 | 939 | if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) |
a15fd361 SE |
940 | batadv_hardif_disable_interface(hard_iface, |
941 | BATADV_IF_CLEANUP_AUTO); | |
c6c8fea2 | 942 | |
77d69d8c | 943 | ret = batadv_hardif_enable_interface(hard_iface, net, ifname); |
ed75ccbe | 944 | out: |
82047ad7 | 945 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
946 | return ret; |
947 | } | |
948 | ||
77d69d8c SE |
949 | /** |
950 | * batadv_store_mesh_iface_work - store new hardif mesh_iface state | |
951 | * @work: work queue item | |
952 | * | |
953 | * Changes the parts of the hard+soft interface which can not be modified under | |
954 | * sysfs lock (to prevent deadlock situations). | |
955 | */ | |
956 | static void batadv_store_mesh_iface_work(struct work_struct *work) | |
957 | { | |
958 | struct batadv_store_mesh_work *store_work; | |
959 | int ret; | |
960 | ||
961 | store_work = container_of(work, struct batadv_store_mesh_work, work); | |
962 | ||
963 | rtnl_lock(); | |
964 | ret = batadv_store_mesh_iface_finish(store_work->net_dev, | |
965 | store_work->soft_iface_name); | |
966 | rtnl_unlock(); | |
967 | ||
968 | if (ret < 0) | |
969 | pr_err("Failed to store new mesh_iface state %s for %s: %d\n", | |
970 | store_work->soft_iface_name, store_work->net_dev->name, | |
971 | ret); | |
972 | ||
973 | dev_put(store_work->net_dev); | |
974 | kfree(store_work); | |
975 | } | |
976 | ||
977 | static ssize_t batadv_store_mesh_iface(struct kobject *kobj, | |
978 | struct attribute *attr, char *buff, | |
979 | size_t count) | |
980 | { | |
981 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
982 | struct batadv_store_mesh_work *store_work; | |
983 | ||
984 | if (buff[count - 1] == '\n') | |
985 | buff[count - 1] = '\0'; | |
986 | ||
987 | if (strlen(buff) >= IFNAMSIZ) { | |
988 | pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", | |
989 | buff); | |
990 | return -EINVAL; | |
991 | } | |
992 | ||
993 | store_work = kmalloc(sizeof(*store_work), GFP_KERNEL); | |
994 | if (!store_work) | |
995 | return -ENOMEM; | |
996 | ||
997 | dev_hold(net_dev); | |
998 | INIT_WORK(&store_work->work, batadv_store_mesh_iface_work); | |
999 | store_work->net_dev = net_dev; | |
1000 | strlcpy(store_work->soft_iface_name, buff, | |
1001 | sizeof(store_work->soft_iface_name)); | |
1002 | ||
1003 | queue_work(batadv_event_workqueue, &store_work->work); | |
1004 | ||
1005 | return count; | |
1006 | } | |
1007 | ||
0ff9b86f SE |
1008 | static ssize_t batadv_show_iface_status(struct kobject *kobj, |
1009 | struct attribute *attr, char *buff) | |
c6c8fea2 | 1010 | { |
0ff9b86f | 1011 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 1012 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 SE |
1013 | ssize_t length; |
1014 | ||
56303d34 | 1015 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 1016 | if (!hard_iface) |
c6c8fea2 SE |
1017 | return 0; |
1018 | ||
e6c10f43 | 1019 | switch (hard_iface->if_status) { |
e9a4f295 | 1020 | case BATADV_IF_TO_BE_REMOVED: |
c6c8fea2 SE |
1021 | length = sprintf(buff, "disabling\n"); |
1022 | break; | |
e9a4f295 | 1023 | case BATADV_IF_INACTIVE: |
c6c8fea2 SE |
1024 | length = sprintf(buff, "inactive\n"); |
1025 | break; | |
e9a4f295 | 1026 | case BATADV_IF_ACTIVE: |
c6c8fea2 SE |
1027 | length = sprintf(buff, "active\n"); |
1028 | break; | |
e9a4f295 | 1029 | case BATADV_IF_TO_BE_ACTIVATED: |
c6c8fea2 SE |
1030 | length = sprintf(buff, "enabling\n"); |
1031 | break; | |
e9a4f295 | 1032 | case BATADV_IF_NOT_IN_USE: |
c6c8fea2 SE |
1033 | default: |
1034 | length = sprintf(buff, "not in use\n"); | |
1035 | break; | |
1036 | } | |
1037 | ||
82047ad7 | 1038 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
1039 | |
1040 | return length; | |
1041 | } | |
1042 | ||
0b5ecc68 AQ |
1043 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
1044 | ||
1045 | /** | |
1046 | * batadv_store_throughput_override - parse and store throughput override | |
1047 | * entered by the user | |
1048 | * @kobj: kobject representing the private mesh sysfs directory | |
1049 | * @attr: the batman-adv attribute the user is interacting with | |
1050 | * @buff: the buffer containing the user data | |
1051 | * @count: number of bytes in the buffer | |
1052 | * | |
1053 | * Return: 'count' on success or a negative error code in case of failure | |
1054 | */ | |
1055 | static ssize_t batadv_store_throughput_override(struct kobject *kobj, | |
1056 | struct attribute *attr, | |
1057 | char *buff, size_t count) | |
1058 | { | |
1059 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1060 | struct batadv_hard_iface *hard_iface; | |
1061 | u32 tp_override; | |
1062 | u32 old_tp_override; | |
1063 | bool ret; | |
1064 | ||
1065 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1066 | if (!hard_iface) | |
1067 | return -EINVAL; | |
1068 | ||
1069 | if (buff[count - 1] == '\n') | |
1070 | buff[count - 1] = '\0'; | |
1071 | ||
1072 | ret = batadv_parse_throughput(net_dev, buff, "throughput_override", | |
1073 | &tp_override); | |
1074 | if (!ret) | |
1075 | return count; | |
1076 | ||
1077 | old_tp_override = atomic_read(&hard_iface->bat_v.throughput_override); | |
1078 | if (old_tp_override == tp_override) | |
1079 | goto out; | |
1080 | ||
1081 | batadv_info(net_dev, "%s: Changing from: %u.%u MBit to: %u.%u MBit\n", | |
1082 | "throughput_override", | |
1083 | old_tp_override / 10, old_tp_override % 10, | |
1084 | tp_override / 10, tp_override % 10); | |
1085 | ||
1086 | atomic_set(&hard_iface->bat_v.throughput_override, tp_override); | |
1087 | ||
1088 | out: | |
1089 | batadv_hardif_put(hard_iface); | |
1090 | return count; | |
1091 | } | |
1092 | ||
1093 | static ssize_t batadv_show_throughput_override(struct kobject *kobj, | |
1094 | struct attribute *attr, | |
1095 | char *buff) | |
1096 | { | |
1097 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1098 | struct batadv_hard_iface *hard_iface; | |
1099 | u32 tp_override; | |
1100 | ||
1101 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1102 | if (!hard_iface) | |
1103 | return -EINVAL; | |
1104 | ||
1105 | tp_override = atomic_read(&hard_iface->bat_v.throughput_override); | |
1106 | ||
1107 | return sprintf(buff, "%u.%u MBit\n", tp_override / 10, | |
1108 | tp_override % 10); | |
1109 | } | |
1110 | ||
1111 | #endif | |
1112 | ||
507b37cf | 1113 | static BATADV_ATTR(mesh_iface, 0644, batadv_show_mesh_iface, |
347c80f0 | 1114 | batadv_store_mesh_iface); |
507b37cf | 1115 | static BATADV_ATTR(iface_status, 0444, batadv_show_iface_status, NULL); |
7f136cd4 | 1116 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
507b37cf | 1117 | BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, 0644, |
7f136cd4 | 1118 | 2 * BATADV_JITTER, INT_MAX, NULL); |
507b37cf | 1119 | static BATADV_ATTR(throughput_override, 0644, batadv_show_throughput_override, |
0b5ecc68 | 1120 | batadv_store_throughput_override); |
7f136cd4 | 1121 | #endif |
c6c8fea2 | 1122 | |
b4d66b87 | 1123 | static struct batadv_attribute *batadv_batman_attrs[] = { |
0ff9b86f SE |
1124 | &batadv_attr_mesh_iface, |
1125 | &batadv_attr_iface_status, | |
7f136cd4 LL |
1126 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
1127 | &batadv_attr_elp_interval, | |
0b5ecc68 | 1128 | &batadv_attr_throughput_override, |
7f136cd4 | 1129 | #endif |
c6c8fea2 SE |
1130 | NULL, |
1131 | }; | |
1132 | ||
5853e22c | 1133 | int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) |
c6c8fea2 SE |
1134 | { |
1135 | struct kobject *hardif_kobject = &dev->dev.kobj; | |
b4d66b87 | 1136 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
1137 | int err; |
1138 | ||
036cbfeb SE |
1139 | *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, |
1140 | hardif_kobject); | |
c6c8fea2 SE |
1141 | |
1142 | if (!*hardif_obj) { | |
3e34819e | 1143 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 1144 | BATADV_SYSFS_IF_BAT_SUBDIR); |
c6c8fea2 SE |
1145 | goto out; |
1146 | } | |
1147 | ||
0ff9b86f | 1148 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
1149 | err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); |
1150 | if (err) { | |
3e34819e | 1151 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 1152 | dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, |
3e34819e | 1153 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
1154 | goto rem_attr; |
1155 | } | |
1156 | } | |
1157 | ||
1158 | return 0; | |
1159 | ||
1160 | rem_attr: | |
0ff9b86f | 1161 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
1162 | sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); |
1163 | out: | |
1164 | return -ENOMEM; | |
1165 | } | |
1166 | ||
5853e22c | 1167 | void batadv_sysfs_del_hardif(struct kobject **hardif_obj) |
c6c8fea2 | 1168 | { |
f4acb108 SE |
1169 | kobject_uevent(*hardif_obj, KOBJ_REMOVE); |
1170 | kobject_del(*hardif_obj); | |
c6c8fea2 SE |
1171 | kobject_put(*hardif_obj); |
1172 | *hardif_obj = NULL; | |
1173 | } | |
c6bda689 | 1174 | |
56303d34 | 1175 | int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, |
39c75a51 | 1176 | enum batadv_uev_action action, const char *data) |
c6bda689 | 1177 | { |
5346c35e | 1178 | int ret = -ENOMEM; |
c6bda689 AQ |
1179 | struct kobject *bat_kobj; |
1180 | char *uevent_env[4] = { NULL, NULL, NULL, NULL }; | |
1181 | ||
736292c2 | 1182 | bat_kobj = &bat_priv->soft_iface->dev.kobj; |
c6bda689 | 1183 | |
b98fe24c HS |
1184 | uevent_env[0] = kasprintf(GFP_ATOMIC, |
1185 | "%s%s", BATADV_UEV_TYPE_VAR, | |
1186 | batadv_uev_type_str[type]); | |
c6bda689 AQ |
1187 | if (!uevent_env[0]) |
1188 | goto out; | |
1189 | ||
b98fe24c HS |
1190 | uevent_env[1] = kasprintf(GFP_ATOMIC, |
1191 | "%s%s", BATADV_UEV_ACTION_VAR, | |
1192 | batadv_uev_action_str[action]); | |
c6bda689 AQ |
1193 | if (!uevent_env[1]) |
1194 | goto out; | |
1195 | ||
c6bda689 | 1196 | /* If the event is DEL, ignore the data field */ |
39c75a51 | 1197 | if (action != BATADV_UEV_DEL) { |
b98fe24c HS |
1198 | uevent_env[2] = kasprintf(GFP_ATOMIC, |
1199 | "%s%s", BATADV_UEV_DATA_VAR, data); | |
c6bda689 AQ |
1200 | if (!uevent_env[2]) |
1201 | goto out; | |
c6bda689 AQ |
1202 | } |
1203 | ||
1204 | ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env); | |
1205 | out: | |
1206 | kfree(uevent_env[0]); | |
1207 | kfree(uevent_env[1]); | |
1208 | kfree(uevent_env[2]); | |
1209 | ||
c6bda689 | 1210 | if (ret) |
39c75a51 | 1211 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf | 1212 | "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n", |
0ff9b86f SE |
1213 | batadv_uev_type_str[type], |
1214 | batadv_uev_action_str[action], | |
39c75a51 | 1215 | (action == BATADV_UEV_DEL ? "NULL" : data), ret); |
c6bda689 AQ |
1216 | return ret; |
1217 | } |