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7db7d9f3 | 1 | // SPDX-License-Identifier: GPL-2.0 |
6b1aea8c | 2 | /* Copyright (C) 2010-2018 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2 of the GNU General Public | |
8 | * License as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
ebf38fb7 | 16 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
17 | */ |
18 | ||
b706b13b | 19 | #include "sysfs.h" |
1e2c2a4f SE |
20 | #include "main.h" |
21 | ||
22 | #include <linux/atomic.h> | |
23 | #include <linux/compiler.h> | |
24 | #include <linux/device.h> | |
25 | #include <linux/errno.h> | |
b92b94ac | 26 | #include <linux/gfp.h> |
1e2c2a4f SE |
27 | #include <linux/if.h> |
28 | #include <linux/if_vlan.h> | |
29 | #include <linux/kernel.h> | |
8cfba951 | 30 | #include <linux/kobject.h> |
fcafa5e7 | 31 | #include <linux/kref.h> |
1e2c2a4f SE |
32 | #include <linux/netdevice.h> |
33 | #include <linux/printk.h> | |
34 | #include <linux/rculist.h> | |
35 | #include <linux/rcupdate.h> | |
36 | #include <linux/rtnetlink.h> | |
37 | #include <linux/slab.h> | |
1e2c2a4f SE |
38 | #include <linux/stddef.h> |
39 | #include <linux/string.h> | |
40 | #include <linux/stringify.h> | |
77d69d8c | 41 | #include <linux/workqueue.h> |
fec149f5 | 42 | #include <uapi/linux/batadv_packet.h> |
1e2c2a4f | 43 | |
fcafa5e7 | 44 | #include "bridge_loop_avoidance.h" |
33af49ad | 45 | #include "distributed-arp-table.h" |
1e2c2a4f SE |
46 | #include "gateway_client.h" |
47 | #include "gateway_common.h" | |
c6c8fea2 | 48 | #include "hard-interface.h" |
ba412080 | 49 | #include "log.h" |
1e2c2a4f | 50 | #include "network-coding.h" |
90f4435d | 51 | #include "soft-interface.h" |
c6c8fea2 | 52 | |
0ff9b86f | 53 | static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) |
3d222bba SE |
54 | { |
55 | struct device *dev = container_of(obj->parent, struct device, kobj); | |
f138694b | 56 | |
3d222bba SE |
57 | return to_net_dev(dev); |
58 | } | |
59 | ||
56303d34 | 60 | static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) |
3d222bba | 61 | { |
0ff9b86f | 62 | struct net_device *net_dev = batadv_kobj_to_netdev(obj); |
f138694b | 63 | |
3d222bba SE |
64 | return netdev_priv(net_dev); |
65 | } | |
c6c8fea2 | 66 | |
90f4435d | 67 | /** |
7e9a8c2c | 68 | * batadv_vlan_kobj_to_batpriv() - convert a vlan kobj in the associated batpriv |
90f4435d AQ |
69 | * @obj: kobject to covert |
70 | * | |
62fe710f | 71 | * Return: the associated batadv_priv struct. |
90f4435d AQ |
72 | */ |
73 | static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) | |
74 | { | |
75 | /* VLAN specific attributes are located in the root sysfs folder if they | |
76 | * refer to the untagged VLAN.. | |
77 | */ | |
78 | if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) | |
79 | return batadv_kobj_to_batpriv(obj); | |
80 | ||
81 | /* ..while the attributes for the tagged vlans are located in | |
82 | * the in the corresponding "vlan%VID" subfolder | |
83 | */ | |
84 | return batadv_kobj_to_batpriv(obj->parent); | |
85 | } | |
86 | ||
87 | /** | |
7e9a8c2c | 88 | * batadv_kobj_to_vlan() - convert a kobj in the associated softif_vlan struct |
7afcbbef | 89 | * @bat_priv: the bat priv with all the soft interface information |
90f4435d AQ |
90 | * @obj: kobject to covert |
91 | * | |
62fe710f | 92 | * Return: the associated softif_vlan struct if found, NULL otherwise. |
90f4435d AQ |
93 | */ |
94 | static struct batadv_softif_vlan * | |
95 | batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) | |
96 | { | |
97 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
98 | ||
99 | rcu_read_lock(); | |
100 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
101 | if (vlan_tmp->kobj != obj) | |
102 | continue; | |
103 | ||
6be4d30c | 104 | if (!kref_get_unless_zero(&vlan_tmp->refcount)) |
90f4435d AQ |
105 | continue; |
106 | ||
107 | vlan = vlan_tmp; | |
108 | break; | |
109 | } | |
110 | rcu_read_unlock(); | |
111 | ||
112 | return vlan; | |
113 | } | |
114 | ||
347c80f0 SE |
115 | #define BATADV_UEV_TYPE_VAR "BATTYPE=" |
116 | #define BATADV_UEV_ACTION_VAR "BATACTION=" | |
117 | #define BATADV_UEV_DATA_VAR "BATDATA=" | |
c6bda689 | 118 | |
0ff9b86f | 119 | static char *batadv_uev_action_str[] = { |
c6bda689 AQ |
120 | "add", |
121 | "del", | |
cd9c7bfb SW |
122 | "change", |
123 | "loopdetect", | |
c6bda689 AQ |
124 | }; |
125 | ||
0ff9b86f | 126 | static char *batadv_uev_type_str[] = { |
cd9c7bfb SW |
127 | "gw", |
128 | "bla", | |
c6bda689 AQ |
129 | }; |
130 | ||
90f4435d AQ |
131 | /* Use this, if you have customized show and store functions for vlan attrs */ |
132 | #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ | |
133 | struct batadv_attribute batadv_attr_vlan_##_name = { \ | |
134 | .attr = {.name = __stringify(_name), \ | |
135 | .mode = _mode }, \ | |
136 | .show = _show, \ | |
137 | .store = _store, \ | |
2b64df20 | 138 | } |
90f4435d | 139 | |
c6c8fea2 | 140 | /* Use this, if you have customized show and store functions */ |
347c80f0 | 141 | #define BATADV_ATTR(_name, _mode, _show, _store) \ |
b4d66b87 | 142 | struct batadv_attribute batadv_attr_##_name = { \ |
347c80f0 SE |
143 | .attr = {.name = __stringify(_name), \ |
144 | .mode = _mode }, \ | |
145 | .show = _show, \ | |
146 | .store = _store, \ | |
2b64df20 | 147 | } |
c6c8fea2 | 148 | |
347c80f0 | 149 | #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ |
0ff9b86f SE |
150 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
151 | struct attribute *attr, char *buff, \ | |
152 | size_t count) \ | |
c6c8fea2 | 153 | { \ |
0ff9b86f | 154 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 155 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 156 | \ |
0ff9b86f SE |
157 | return __batadv_store_bool_attr(buff, count, _post_func, attr, \ |
158 | &bat_priv->_name, net_dev); \ | |
c6c8fea2 SE |
159 | } |
160 | ||
347c80f0 | 161 | #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ |
0ff9b86f SE |
162 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
163 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 164 | { \ |
56303d34 | 165 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 166 | \ |
c6c8fea2 SE |
167 | return sprintf(buff, "%s\n", \ |
168 | atomic_read(&bat_priv->_name) == 0 ? \ | |
169 | "disabled" : "enabled"); \ | |
170 | } \ | |
171 | ||
f245c38b | 172 | /* Use this, if you are going to turn a [name] in the soft-interface |
9cfc7bd6 SE |
173 | * (bat_priv) on or off |
174 | */ | |
347c80f0 SE |
175 | #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \ |
176 | static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ | |
177 | static BATADV_ATTR_SIF_SHOW_BOOL(_name) \ | |
178 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
179 | batadv_store_##_name) | |
c6c8fea2 | 180 | |
6f70eb75 | 181 | #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ |
0ff9b86f SE |
182 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
183 | struct attribute *attr, char *buff, \ | |
184 | size_t count) \ | |
c6c8fea2 | 185 | { \ |
0ff9b86f | 186 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 187 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
f138694b | 188 | \ |
0ff9b86f SE |
189 | return __batadv_store_uint_attr(buff, count, _min, _max, \ |
190 | _post_func, attr, \ | |
a25bab9d SE |
191 | &bat_priv->_var, net_dev, \ |
192 | NULL); \ | |
c6c8fea2 SE |
193 | } |
194 | ||
6f70eb75 | 195 | #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ |
0ff9b86f SE |
196 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
197 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 198 | { \ |
56303d34 | 199 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 200 | \ |
6f70eb75 | 201 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ |
c6c8fea2 SE |
202 | } \ |
203 | ||
f245c38b | 204 | /* Use this, if you are going to set [name] in the soft-interface |
9cfc7bd6 SE |
205 | * (bat_priv) to an unsigned integer value |
206 | */ | |
6f70eb75 AQ |
207 | #define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ |
208 | static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\ | |
209 | static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ | |
347c80f0 SE |
210 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ |
211 | batadv_store_##_name) | |
c6c8fea2 | 212 | |
90f4435d AQ |
213 | #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ |
214 | ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ | |
215 | struct attribute *attr, char *buff, \ | |
216 | size_t count) \ | |
217 | { \ | |
218 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
219 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
220 | kobj); \ | |
221 | size_t res = __batadv_store_bool_attr(buff, count, _post_func, \ | |
222 | attr, &vlan->_name, \ | |
223 | bat_priv->soft_iface); \ | |
f138694b | 224 | \ |
9c3bf081 | 225 | batadv_softif_vlan_put(vlan); \ |
90f4435d AQ |
226 | return res; \ |
227 | } | |
228 | ||
229 | #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
230 | ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ | |
231 | struct attribute *attr, char *buff) \ | |
232 | { \ | |
233 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
234 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
235 | kobj); \ | |
236 | size_t res = sprintf(buff, "%s\n", \ | |
237 | atomic_read(&vlan->_name) == 0 ? \ | |
238 | "disabled" : "enabled"); \ | |
f138694b | 239 | \ |
9c3bf081 | 240 | batadv_softif_vlan_put(vlan); \ |
90f4435d AQ |
241 | return res; \ |
242 | } | |
243 | ||
244 | /* Use this, if you are going to turn a [name] in the vlan struct on or off */ | |
245 | #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \ | |
246 | static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ | |
247 | static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
248 | static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \ | |
249 | batadv_store_vlan_##_name) | |
0744ff8f LL |
250 | |
251 | #define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ | |
252 | ssize_t batadv_store_##_name(struct kobject *kobj, \ | |
253 | struct attribute *attr, char *buff, \ | |
254 | size_t count) \ | |
255 | { \ | |
256 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ | |
257 | struct batadv_hard_iface *hard_iface; \ | |
258 | ssize_t length; \ | |
259 | \ | |
260 | hard_iface = batadv_hardif_get_by_netdev(net_dev); \ | |
261 | if (!hard_iface) \ | |
262 | return 0; \ | |
263 | \ | |
264 | length = __batadv_store_uint_attr(buff, count, _min, _max, \ | |
265 | _post_func, attr, \ | |
a25bab9d SE |
266 | &hard_iface->_var, \ |
267 | hard_iface->soft_iface, \ | |
268 | net_dev); \ | |
0744ff8f LL |
269 | \ |
270 | batadv_hardif_put(hard_iface); \ | |
271 | return length; \ | |
272 | } | |
273 | ||
274 | #define BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ | |
275 | ssize_t batadv_show_##_name(struct kobject *kobj, \ | |
276 | struct attribute *attr, char *buff) \ | |
277 | { \ | |
278 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ | |
279 | struct batadv_hard_iface *hard_iface; \ | |
280 | ssize_t length; \ | |
281 | \ | |
282 | hard_iface = batadv_hardif_get_by_netdev(net_dev); \ | |
283 | if (!hard_iface) \ | |
284 | return 0; \ | |
285 | \ | |
286 | length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var)); \ | |
287 | \ | |
288 | batadv_hardif_put(hard_iface); \ | |
289 | return length; \ | |
290 | } | |
291 | ||
292 | /* Use this, if you are going to set [name] in hard_iface to an | |
293 | * unsigned integer value | |
294 | */ | |
295 | #define BATADV_ATTR_HIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ | |
296 | static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, \ | |
297 | _max, _post_func) \ | |
298 | static BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ | |
299 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
300 | batadv_store_##_name) | |
c6c8fea2 | 301 | |
0ff9b86f SE |
302 | static int batadv_store_bool_attr(char *buff, size_t count, |
303 | struct net_device *net_dev, | |
9e728e84 SW |
304 | const char *attr_name, atomic_t *attr, |
305 | bool *changed) | |
c6c8fea2 SE |
306 | { |
307 | int enabled = -1; | |
308 | ||
9e728e84 SW |
309 | *changed = false; |
310 | ||
c6c8fea2 SE |
311 | if (buff[count - 1] == '\n') |
312 | buff[count - 1] = '\0'; | |
313 | ||
314 | if ((strncmp(buff, "1", 2) == 0) || | |
315 | (strncmp(buff, "enable", 7) == 0) || | |
316 | (strncmp(buff, "enabled", 8) == 0)) | |
317 | enabled = 1; | |
318 | ||
319 | if ((strncmp(buff, "0", 2) == 0) || | |
320 | (strncmp(buff, "disable", 8) == 0) || | |
321 | (strncmp(buff, "disabled", 9) == 0)) | |
322 | enabled = 0; | |
323 | ||
324 | if (enabled < 0) { | |
3e34819e SE |
325 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
326 | attr_name, buff); | |
c6c8fea2 SE |
327 | return -EINVAL; |
328 | } | |
329 | ||
330 | if (atomic_read(attr) == enabled) | |
331 | return count; | |
332 | ||
3e34819e SE |
333 | batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, |
334 | atomic_read(attr) == 1 ? "enabled" : "disabled", | |
335 | enabled == 1 ? "enabled" : "disabled"); | |
c6c8fea2 | 336 | |
9e728e84 SW |
337 | *changed = true; |
338 | ||
95c96174 | 339 | atomic_set(attr, (unsigned int)enabled); |
c6c8fea2 SE |
340 | return count; |
341 | } | |
342 | ||
0ff9b86f SE |
343 | static inline ssize_t |
344 | __batadv_store_bool_attr(char *buff, size_t count, | |
345 | void (*post_func)(struct net_device *), | |
346 | struct attribute *attr, | |
347 | atomic_t *attr_store, struct net_device *net_dev) | |
c6c8fea2 | 348 | { |
9e728e84 | 349 | bool changed; |
c6c8fea2 SE |
350 | int ret; |
351 | ||
0ff9b86f | 352 | ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, |
9e728e84 SW |
353 | attr_store, &changed); |
354 | if (post_func && changed) | |
c6c8fea2 SE |
355 | post_func(net_dev); |
356 | ||
357 | return ret; | |
358 | } | |
359 | ||
0ff9b86f SE |
360 | static int batadv_store_uint_attr(const char *buff, size_t count, |
361 | struct net_device *net_dev, | |
a25bab9d | 362 | struct net_device *slave_dev, |
0ff9b86f SE |
363 | const char *attr_name, |
364 | unsigned int min, unsigned int max, | |
365 | atomic_t *attr) | |
c6c8fea2 | 366 | { |
a25bab9d | 367 | char ifname[IFNAMSIZ + 3] = ""; |
c6c8fea2 SE |
368 | unsigned long uint_val; |
369 | int ret; | |
370 | ||
25a92b13 | 371 | ret = kstrtoul(buff, 10, &uint_val); |
c6c8fea2 | 372 | if (ret) { |
3e34819e SE |
373 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
374 | attr_name, buff); | |
c6c8fea2 SE |
375 | return -EINVAL; |
376 | } | |
377 | ||
378 | if (uint_val < min) { | |
3e34819e SE |
379 | batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", |
380 | attr_name, uint_val, min); | |
c6c8fea2 SE |
381 | return -EINVAL; |
382 | } | |
383 | ||
384 | if (uint_val > max) { | |
3e34819e SE |
385 | batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", |
386 | attr_name, uint_val, max); | |
c6c8fea2 SE |
387 | return -EINVAL; |
388 | } | |
389 | ||
390 | if (atomic_read(attr) == uint_val) | |
391 | return count; | |
392 | ||
a25bab9d SE |
393 | if (slave_dev) |
394 | snprintf(ifname, sizeof(ifname), "%s: ", slave_dev->name); | |
395 | ||
396 | batadv_info(net_dev, "%s: %sChanging from: %i to: %lu\n", | |
397 | attr_name, ifname, atomic_read(attr), uint_val); | |
c6c8fea2 SE |
398 | |
399 | atomic_set(attr, uint_val); | |
400 | return count; | |
401 | } | |
402 | ||
c149ca72 AQ |
403 | static ssize_t __batadv_store_uint_attr(const char *buff, size_t count, |
404 | int min, int max, | |
405 | void (*post_func)(struct net_device *), | |
406 | const struct attribute *attr, | |
407 | atomic_t *attr_store, | |
a25bab9d SE |
408 | struct net_device *net_dev, |
409 | struct net_device *slave_dev) | |
c6c8fea2 SE |
410 | { |
411 | int ret; | |
412 | ||
a25bab9d SE |
413 | ret = batadv_store_uint_attr(buff, count, net_dev, slave_dev, |
414 | attr->name, min, max, attr_store); | |
c6c8fea2 SE |
415 | if (post_func && ret) |
416 | post_func(net_dev); | |
417 | ||
418 | return ret; | |
419 | } | |
420 | ||
0ff9b86f SE |
421 | static ssize_t batadv_show_bat_algo(struct kobject *kobj, |
422 | struct attribute *attr, char *buff) | |
ea3d2fd1 | 423 | { |
56303d34 | 424 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
f138694b | 425 | |
29824a55 | 426 | return sprintf(buff, "%s\n", bat_priv->algo_ops->name); |
ea3d2fd1 ML |
427 | } |
428 | ||
4e820e72 | 429 | static void batadv_post_gw_reselect(struct net_device *net_dev) |
c6c8fea2 | 430 | { |
56303d34 | 431 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
f138694b | 432 | |
4e820e72 | 433 | batadv_gw_reselect(bat_priv); |
c6c8fea2 SE |
434 | } |
435 | ||
0ff9b86f SE |
436 | static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, |
437 | char *buff) | |
c6c8fea2 | 438 | { |
56303d34 | 439 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
c6c8fea2 SE |
440 | int bytes_written; |
441 | ||
a8d8d1de AQ |
442 | /* GW mode is not available if the routing algorithm in use does not |
443 | * implement the GW API | |
444 | */ | |
445 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
446 | !bat_priv->algo_ops->gw.is_eligible) | |
447 | return -ENOENT; | |
448 | ||
3a24a63e | 449 | switch (atomic_read(&bat_priv->gw.mode)) { |
cd646ab1 | 450 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 SE |
451 | bytes_written = sprintf(buff, "%s\n", |
452 | BATADV_GW_MODE_CLIENT_NAME); | |
c6c8fea2 | 453 | break; |
cd646ab1 | 454 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 SE |
455 | bytes_written = sprintf(buff, "%s\n", |
456 | BATADV_GW_MODE_SERVER_NAME); | |
c6c8fea2 SE |
457 | break; |
458 | default: | |
97ea4ba1 SE |
459 | bytes_written = sprintf(buff, "%s\n", |
460 | BATADV_GW_MODE_OFF_NAME); | |
c6c8fea2 SE |
461 | break; |
462 | } | |
463 | ||
464 | return bytes_written; | |
465 | } | |
466 | ||
0ff9b86f SE |
467 | static ssize_t batadv_store_gw_mode(struct kobject *kobj, |
468 | struct attribute *attr, char *buff, | |
469 | size_t count) | |
c6c8fea2 | 470 | { |
0ff9b86f | 471 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 472 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
c6c8fea2 SE |
473 | char *curr_gw_mode_str; |
474 | int gw_mode_tmp = -1; | |
475 | ||
a8d8d1de AQ |
476 | /* toggling GW mode is allowed only if the routing algorithm in use |
477 | * provides the GW API | |
478 | */ | |
479 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
480 | !bat_priv->algo_ops->gw.is_eligible) | |
481 | return -EINVAL; | |
482 | ||
c6c8fea2 SE |
483 | if (buff[count - 1] == '\n') |
484 | buff[count - 1] = '\0'; | |
485 | ||
97ea4ba1 SE |
486 | if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, |
487 | strlen(BATADV_GW_MODE_OFF_NAME)) == 0) | |
cd646ab1 | 488 | gw_mode_tmp = BATADV_GW_MODE_OFF; |
c6c8fea2 | 489 | |
97ea4ba1 SE |
490 | if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, |
491 | strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) | |
cd646ab1 | 492 | gw_mode_tmp = BATADV_GW_MODE_CLIENT; |
c6c8fea2 | 493 | |
97ea4ba1 SE |
494 | if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, |
495 | strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) | |
cd646ab1 | 496 | gw_mode_tmp = BATADV_GW_MODE_SERVER; |
c6c8fea2 SE |
497 | |
498 | if (gw_mode_tmp < 0) { | |
3e34819e SE |
499 | batadv_info(net_dev, |
500 | "Invalid parameter for 'gw mode' setting received: %s\n", | |
501 | buff); | |
c6c8fea2 SE |
502 | return -EINVAL; |
503 | } | |
504 | ||
3a24a63e | 505 | if (atomic_read(&bat_priv->gw.mode) == gw_mode_tmp) |
c6c8fea2 SE |
506 | return count; |
507 | ||
3a24a63e | 508 | switch (atomic_read(&bat_priv->gw.mode)) { |
cd646ab1 | 509 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 | 510 | curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; |
c6c8fea2 | 511 | break; |
cd646ab1 | 512 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 | 513 | curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; |
c6c8fea2 SE |
514 | break; |
515 | default: | |
97ea4ba1 | 516 | curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; |
c6c8fea2 SE |
517 | break; |
518 | } | |
519 | ||
3e34819e SE |
520 | batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", |
521 | curr_gw_mode_str, buff); | |
c6c8fea2 | 522 | |
f3163181 AQ |
523 | /* Invoking batadv_gw_reselect() is not enough to really de-select the |
524 | * current GW. It will only instruct the gateway client code to perform | |
525 | * a re-election the next time that this is needed. | |
526 | * | |
527 | * When gw client mode is being switched off the current GW must be | |
528 | * de-selected explicitly otherwise no GW_ADD uevent is thrown on | |
529 | * client mode re-activation. This is operation is performed in | |
530 | * batadv_gw_check_client_stop(). | |
531 | */ | |
4e820e72 | 532 | batadv_gw_reselect(bat_priv); |
c6eaa3f0 AQ |
533 | /* always call batadv_gw_check_client_stop() before changing the gateway |
534 | * state | |
535 | */ | |
536 | batadv_gw_check_client_stop(bat_priv); | |
3a24a63e | 537 | atomic_set(&bat_priv->gw.mode, (unsigned int)gw_mode_tmp); |
414254e3 | 538 | batadv_gw_tvlv_container_update(bat_priv); |
c6c8fea2 SE |
539 | return count; |
540 | } | |
541 | ||
08686943 AQ |
542 | static ssize_t batadv_show_gw_sel_class(struct kobject *kobj, |
543 | struct attribute *attr, char *buff) | |
544 | { | |
545 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
546 | ||
a8d8d1de AQ |
547 | /* GW selection class is not available if the routing algorithm in use |
548 | * does not implement the GW API | |
549 | */ | |
550 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
551 | !bat_priv->algo_ops->gw.is_eligible) | |
552 | return -ENOENT; | |
553 | ||
08686943 AQ |
554 | if (bat_priv->algo_ops->gw.show_sel_class) |
555 | return bat_priv->algo_ops->gw.show_sel_class(bat_priv, buff); | |
556 | ||
557 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->gw.sel_class)); | |
558 | } | |
559 | ||
560 | static ssize_t batadv_store_gw_sel_class(struct kobject *kobj, | |
561 | struct attribute *attr, char *buff, | |
562 | size_t count) | |
563 | { | |
564 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
565 | ||
a8d8d1de AQ |
566 | /* setting the GW selection class is allowed only if the routing |
567 | * algorithm in use implements the GW API | |
568 | */ | |
569 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
570 | !bat_priv->algo_ops->gw.is_eligible) | |
571 | return -EINVAL; | |
572 | ||
08686943 AQ |
573 | if (buff[count - 1] == '\n') |
574 | buff[count - 1] = '\0'; | |
575 | ||
576 | if (bat_priv->algo_ops->gw.store_sel_class) | |
577 | return bat_priv->algo_ops->gw.store_sel_class(bat_priv, buff, | |
578 | count); | |
579 | ||
580 | return __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE, | |
581 | batadv_post_gw_reselect, attr, | |
582 | &bat_priv->gw.sel_class, | |
a25bab9d | 583 | bat_priv->soft_iface, NULL); |
08686943 AQ |
584 | } |
585 | ||
0ff9b86f SE |
586 | static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, |
587 | struct attribute *attr, char *buff) | |
c6c8fea2 | 588 | { |
56303d34 | 589 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
6b5e971a | 590 | u32 down, up; |
414254e3 ML |
591 | |
592 | down = atomic_read(&bat_priv->gw.bandwidth_down); | |
593 | up = atomic_read(&bat_priv->gw.bandwidth_up); | |
594 | ||
595 | return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10, | |
596 | down % 10, up / 10, up % 10); | |
c6c8fea2 SE |
597 | } |
598 | ||
0ff9b86f SE |
599 | static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, |
600 | struct attribute *attr, char *buff, | |
601 | size_t count) | |
c6c8fea2 | 602 | { |
0ff9b86f | 603 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
c6c8fea2 SE |
604 | |
605 | if (buff[count - 1] == '\n') | |
606 | buff[count - 1] = '\0'; | |
607 | ||
84d5e5e0 | 608 | return batadv_gw_bandwidth_set(net_dev, buff, count); |
c6c8fea2 SE |
609 | } |
610 | ||
c42edfe3 | 611 | /** |
7e9a8c2c | 612 | * batadv_show_isolation_mark() - print the current isolation mark/mask |
c42edfe3 AQ |
613 | * @kobj: kobject representing the private mesh sysfs directory |
614 | * @attr: the batman-adv attribute the user is interacting with | |
615 | * @buff: the buffer that will contain the data to send back to the user | |
616 | * | |
62fe710f | 617 | * Return: the number of bytes written into 'buff' on success or a negative |
c42edfe3 AQ |
618 | * error code in case of failure |
619 | */ | |
620 | static ssize_t batadv_show_isolation_mark(struct kobject *kobj, | |
621 | struct attribute *attr, char *buff) | |
622 | { | |
623 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
624 | ||
625 | return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark, | |
626 | bat_priv->isolation_mark_mask); | |
627 | } | |
628 | ||
629 | /** | |
7e9a8c2c SE |
630 | * batadv_store_isolation_mark() - parse and store the isolation mark/mask |
631 | * entered by the user | |
c42edfe3 AQ |
632 | * @kobj: kobject representing the private mesh sysfs directory |
633 | * @attr: the batman-adv attribute the user is interacting with | |
634 | * @buff: the buffer containing the user data | |
635 | * @count: number of bytes in the buffer | |
636 | * | |
62fe710f | 637 | * Return: 'count' on success or a negative error code in case of failure |
c42edfe3 AQ |
638 | */ |
639 | static ssize_t batadv_store_isolation_mark(struct kobject *kobj, | |
640 | struct attribute *attr, char *buff, | |
641 | size_t count) | |
642 | { | |
643 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
644 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
6b5e971a | 645 | u32 mark, mask; |
c42edfe3 AQ |
646 | char *mask_ptr; |
647 | ||
648 | /* parse the mask if it has been specified, otherwise assume the mask is | |
649 | * the biggest possible | |
650 | */ | |
651 | mask = 0xFFFFFFFF; | |
652 | mask_ptr = strchr(buff, '/'); | |
653 | if (mask_ptr) { | |
654 | *mask_ptr = '\0'; | |
655 | mask_ptr++; | |
656 | ||
657 | /* the mask must be entered in hex base as it is going to be a | |
658 | * bitmask and not a prefix length | |
659 | */ | |
660 | if (kstrtou32(mask_ptr, 16, &mask) < 0) | |
661 | return -EINVAL; | |
662 | } | |
663 | ||
664 | /* the mark can be entered in any base */ | |
665 | if (kstrtou32(buff, 0, &mark) < 0) | |
666 | return -EINVAL; | |
667 | ||
668 | bat_priv->isolation_mark_mask = mask; | |
669 | /* erase bits not covered by the mask */ | |
670 | bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask; | |
671 | ||
672 | batadv_info(net_dev, | |
673 | "New skb mark for extended isolation: %#.8x/%#.8x\n", | |
674 | bat_priv->isolation_mark, bat_priv->isolation_mark_mask); | |
675 | ||
676 | return count; | |
677 | } | |
678 | ||
507b37cf SE |
679 | BATADV_ATTR_SIF_BOOL(aggregated_ogms, 0644, NULL); |
680 | BATADV_ATTR_SIF_BOOL(bonding, 0644, NULL); | |
7a5cc242 | 681 | #ifdef CONFIG_BATMAN_ADV_BLA |
507b37cf | 682 | BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, 0644, batadv_bla_status_update); |
7a5cc242 | 683 | #endif |
33af49ad | 684 | #ifdef CONFIG_BATMAN_ADV_DAT |
507b37cf | 685 | BATADV_ATTR_SIF_BOOL(distributed_arp_table, 0644, batadv_dat_status_update); |
33af49ad | 686 | #endif |
507b37cf SE |
687 | BATADV_ATTR_SIF_BOOL(fragmentation, 0644, batadv_update_min_mtu); |
688 | static BATADV_ATTR(routing_algo, 0444, batadv_show_bat_algo, NULL); | |
689 | static BATADV_ATTR(gw_mode, 0644, batadv_show_gw_mode, batadv_store_gw_mode); | |
690 | BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, 0644, 2 * BATADV_JITTER, | |
691 | INT_MAX, NULL); | |
692 | BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, 0644, 0, BATADV_TQ_MAX_VALUE, | |
693 | NULL); | |
694 | static BATADV_ATTR(gw_sel_class, 0644, batadv_show_gw_sel_class, | |
08686943 | 695 | batadv_store_gw_sel_class); |
507b37cf | 696 | static BATADV_ATTR(gw_bandwidth, 0644, batadv_show_gw_bwidth, |
347c80f0 | 697 | batadv_store_gw_bwidth); |
1d8ab8d3 | 698 | #ifdef CONFIG_BATMAN_ADV_MCAST |
507b37cf | 699 | BATADV_ATTR_SIF_BOOL(multicast_mode, 0644, NULL); |
1d8ab8d3 | 700 | #endif |
c6c8fea2 | 701 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
507b37cf | 702 | BATADV_ATTR_SIF_UINT(log_level, log_level, 0644, 0, BATADV_DBG_ALL, NULL); |
c6c8fea2 | 703 | #endif |
d353d8d4 | 704 | #ifdef CONFIG_BATMAN_ADV_NC |
507b37cf | 705 | BATADV_ATTR_SIF_BOOL(network_coding, 0644, batadv_nc_status_update); |
d353d8d4 | 706 | #endif |
507b37cf SE |
707 | static BATADV_ATTR(isolation_mark, 0644, batadv_show_isolation_mark, |
708 | batadv_store_isolation_mark); | |
c6c8fea2 | 709 | |
b4d66b87 | 710 | static struct batadv_attribute *batadv_mesh_attrs[] = { |
0ff9b86f SE |
711 | &batadv_attr_aggregated_ogms, |
712 | &batadv_attr_bonding, | |
7a5cc242 | 713 | #ifdef CONFIG_BATMAN_ADV_BLA |
0ff9b86f | 714 | &batadv_attr_bridge_loop_avoidance, |
33af49ad AQ |
715 | #endif |
716 | #ifdef CONFIG_BATMAN_ADV_DAT | |
717 | &batadv_attr_distributed_arp_table, | |
1d8ab8d3 LL |
718 | #endif |
719 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
720 | &batadv_attr_multicast_mode, | |
7a5cc242 | 721 | #endif |
0ff9b86f | 722 | &batadv_attr_fragmentation, |
0ff9b86f SE |
723 | &batadv_attr_routing_algo, |
724 | &batadv_attr_gw_mode, | |
725 | &batadv_attr_orig_interval, | |
726 | &batadv_attr_hop_penalty, | |
727 | &batadv_attr_gw_sel_class, | |
728 | &batadv_attr_gw_bandwidth, | |
c6c8fea2 | 729 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
0ff9b86f | 730 | &batadv_attr_log_level, |
d353d8d4 MH |
731 | #endif |
732 | #ifdef CONFIG_BATMAN_ADV_NC | |
733 | &batadv_attr_network_coding, | |
c6c8fea2 | 734 | #endif |
c42edfe3 | 735 | &batadv_attr_isolation_mark, |
c6c8fea2 SE |
736 | NULL, |
737 | }; | |
738 | ||
507b37cf | 739 | BATADV_ATTR_VLAN_BOOL(ap_isolation, 0644, NULL); |
b8cbd81d | 740 | |
f34ac9d4 | 741 | /* array of vlan specific sysfs attributes */ |
90f4435d | 742 | static struct batadv_attribute *batadv_vlan_attrs[] = { |
b8cbd81d | 743 | &batadv_attr_vlan_ap_isolation, |
90f4435d AQ |
744 | NULL, |
745 | }; | |
746 | ||
ff15c27c SE |
747 | /** |
748 | * batadv_sysfs_add_meshif() - Add soft interface specific sysfs entries | |
749 | * @dev: netdev struct of the soft interface | |
750 | * | |
751 | * Return: 0 on success or negative error number in case of failure | |
752 | */ | |
5853e22c | 753 | int batadv_sysfs_add_meshif(struct net_device *dev) |
c6c8fea2 SE |
754 | { |
755 | struct kobject *batif_kobject = &dev->dev.kobj; | |
56303d34 | 756 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 757 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
758 | int err; |
759 | ||
036cbfeb | 760 | bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, |
c6c8fea2 SE |
761 | batif_kobject); |
762 | if (!bat_priv->mesh_obj) { | |
3e34819e | 763 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 764 | BATADV_SYSFS_IF_MESH_SUBDIR); |
c6c8fea2 SE |
765 | goto out; |
766 | } | |
767 | ||
0ff9b86f | 768 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
769 | err = sysfs_create_file(bat_priv->mesh_obj, |
770 | &((*bat_attr)->attr)); | |
771 | if (err) { | |
3e34819e | 772 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 773 | dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, |
3e34819e | 774 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
775 | goto rem_attr; |
776 | } | |
777 | } | |
778 | ||
779 | return 0; | |
780 | ||
781 | rem_attr: | |
0ff9b86f | 782 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
783 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
784 | ||
f4acb108 SE |
785 | kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
786 | kobject_del(bat_priv->mesh_obj); | |
c6c8fea2 SE |
787 | kobject_put(bat_priv->mesh_obj); |
788 | bat_priv->mesh_obj = NULL; | |
789 | out: | |
790 | return -ENOMEM; | |
791 | } | |
792 | ||
ff15c27c SE |
793 | /** |
794 | * batadv_sysfs_del_meshif() - Remove soft interface specific sysfs entries | |
795 | * @dev: netdev struct of the soft interface | |
796 | */ | |
5853e22c | 797 | void batadv_sysfs_del_meshif(struct net_device *dev) |
c6c8fea2 | 798 | { |
56303d34 | 799 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 800 | struct batadv_attribute **bat_attr; |
c6c8fea2 | 801 | |
0ff9b86f | 802 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
803 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
804 | ||
f4acb108 SE |
805 | kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
806 | kobject_del(bat_priv->mesh_obj); | |
c6c8fea2 SE |
807 | kobject_put(bat_priv->mesh_obj); |
808 | bat_priv->mesh_obj = NULL; | |
809 | } | |
810 | ||
90f4435d | 811 | /** |
7e9a8c2c | 812 | * batadv_sysfs_add_vlan() - add all the needed sysfs objects for the new vlan |
90f4435d AQ |
813 | * @dev: netdev of the mesh interface |
814 | * @vlan: private data of the newly added VLAN interface | |
815 | * | |
62fe710f | 816 | * Return: 0 on success and -ENOMEM if any of the structure allocations fails. |
90f4435d AQ |
817 | */ |
818 | int batadv_sysfs_add_vlan(struct net_device *dev, | |
819 | struct batadv_softif_vlan *vlan) | |
820 | { | |
821 | char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5]; | |
822 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
823 | struct batadv_attribute **bat_attr; | |
824 | int err; | |
825 | ||
826 | if (vlan->vid & BATADV_VLAN_HAS_TAG) { | |
827 | sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu", | |
828 | vlan->vid & VLAN_VID_MASK); | |
829 | ||
830 | vlan->kobj = kobject_create_and_add(vlan_subdir, | |
831 | bat_priv->mesh_obj); | |
832 | if (!vlan->kobj) { | |
833 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", | |
834 | dev->name, vlan_subdir); | |
835 | goto out; | |
836 | } | |
837 | } else { | |
838 | /* the untagged LAN uses the root folder to store its "VLAN | |
839 | * specific attributes" | |
840 | */ | |
841 | vlan->kobj = bat_priv->mesh_obj; | |
842 | kobject_get(bat_priv->mesh_obj); | |
843 | } | |
844 | ||
845 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) { | |
846 | err = sysfs_create_file(vlan->kobj, | |
847 | &((*bat_attr)->attr)); | |
848 | if (err) { | |
849 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", | |
850 | dev->name, vlan_subdir, | |
851 | ((*bat_attr)->attr).name); | |
852 | goto rem_attr; | |
853 | } | |
854 | } | |
855 | ||
856 | return 0; | |
857 | ||
858 | rem_attr: | |
859 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
860 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
861 | ||
f4acb108 SE |
862 | if (vlan->kobj != bat_priv->mesh_obj) { |
863 | kobject_uevent(vlan->kobj, KOBJ_REMOVE); | |
864 | kobject_del(vlan->kobj); | |
865 | } | |
90f4435d AQ |
866 | kobject_put(vlan->kobj); |
867 | vlan->kobj = NULL; | |
868 | out: | |
869 | return -ENOMEM; | |
870 | } | |
871 | ||
872 | /** | |
7e9a8c2c | 873 | * batadv_sysfs_del_vlan() - remove all the sysfs objects for a given VLAN |
90f4435d AQ |
874 | * @bat_priv: the bat priv with all the soft interface information |
875 | * @vlan: the private data of the VLAN to destroy | |
876 | */ | |
877 | void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, | |
878 | struct batadv_softif_vlan *vlan) | |
879 | { | |
880 | struct batadv_attribute **bat_attr; | |
881 | ||
882 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
883 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
884 | ||
f4acb108 SE |
885 | if (vlan->kobj != bat_priv->mesh_obj) { |
886 | kobject_uevent(vlan->kobj, KOBJ_REMOVE); | |
887 | kobject_del(vlan->kobj); | |
888 | } | |
90f4435d AQ |
889 | kobject_put(vlan->kobj); |
890 | vlan->kobj = NULL; | |
891 | } | |
892 | ||
0ff9b86f SE |
893 | static ssize_t batadv_show_mesh_iface(struct kobject *kobj, |
894 | struct attribute *attr, char *buff) | |
c6c8fea2 | 895 | { |
0ff9b86f | 896 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 897 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 898 | ssize_t length; |
e9a4f295 | 899 | const char *ifname; |
c6c8fea2 | 900 | |
56303d34 | 901 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 902 | if (!hard_iface) |
c6c8fea2 SE |
903 | return 0; |
904 | ||
e9a4f295 SE |
905 | if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) |
906 | ifname = "none"; | |
907 | else | |
908 | ifname = hard_iface->soft_iface->name; | |
909 | ||
910 | length = sprintf(buff, "%s\n", ifname); | |
c6c8fea2 | 911 | |
82047ad7 | 912 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
913 | |
914 | return length; | |
915 | } | |
916 | ||
77d69d8c | 917 | /** |
7e9a8c2c | 918 | * batadv_store_mesh_iface_finish() - store new hardif mesh_iface state |
77d69d8c SE |
919 | * @net_dev: netdevice to add/remove to/from batman-adv soft-interface |
920 | * @ifname: name of soft-interface to modify | |
921 | * | |
922 | * Changes the parts of the hard+soft interface which can not be modified under | |
923 | * sysfs lock (to prevent deadlock situations). | |
924 | * | |
925 | * Return: 0 on success, 0 < on failure | |
926 | */ | |
927 | static int batadv_store_mesh_iface_finish(struct net_device *net_dev, | |
928 | char ifname[IFNAMSIZ]) | |
c6c8fea2 | 929 | { |
2cd45a06 | 930 | struct net *net = dev_net(net_dev); |
56303d34 | 931 | struct batadv_hard_iface *hard_iface; |
77d69d8c SE |
932 | int status_tmp; |
933 | int ret = 0; | |
934 | ||
935 | ASSERT_RTNL(); | |
c6c8fea2 | 936 | |
56303d34 | 937 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 938 | if (!hard_iface) |
77d69d8c | 939 | return 0; |
c6c8fea2 | 940 | |
77d69d8c | 941 | if (strncmp(ifname, "none", 4) == 0) |
e9a4f295 | 942 | status_tmp = BATADV_IF_NOT_IN_USE; |
c6c8fea2 | 943 | else |
e9a4f295 | 944 | status_tmp = BATADV_IF_I_WANT_YOU; |
c6c8fea2 | 945 | |
e6c10f43 ML |
946 | if (hard_iface->if_status == status_tmp) |
947 | goto out; | |
948 | ||
825ffe1f SE |
949 | if (hard_iface->soft_iface && |
950 | strncmp(hard_iface->soft_iface->name, ifname, IFNAMSIZ) == 0) | |
ed75ccbe | 951 | goto out; |
c6c8fea2 | 952 | |
e9a4f295 | 953 | if (status_tmp == BATADV_IF_NOT_IN_USE) { |
a15fd361 SE |
954 | batadv_hardif_disable_interface(hard_iface, |
955 | BATADV_IF_CLEANUP_AUTO); | |
77d69d8c | 956 | goto out; |
c6c8fea2 SE |
957 | } |
958 | ||
959 | /* if the interface already is in use */ | |
e9a4f295 | 960 | if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) |
a15fd361 SE |
961 | batadv_hardif_disable_interface(hard_iface, |
962 | BATADV_IF_CLEANUP_AUTO); | |
c6c8fea2 | 963 | |
77d69d8c | 964 | ret = batadv_hardif_enable_interface(hard_iface, net, ifname); |
ed75ccbe | 965 | out: |
82047ad7 | 966 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
967 | return ret; |
968 | } | |
969 | ||
77d69d8c | 970 | /** |
7e9a8c2c | 971 | * batadv_store_mesh_iface_work() - store new hardif mesh_iface state |
77d69d8c SE |
972 | * @work: work queue item |
973 | * | |
974 | * Changes the parts of the hard+soft interface which can not be modified under | |
975 | * sysfs lock (to prevent deadlock situations). | |
976 | */ | |
977 | static void batadv_store_mesh_iface_work(struct work_struct *work) | |
978 | { | |
979 | struct batadv_store_mesh_work *store_work; | |
980 | int ret; | |
981 | ||
982 | store_work = container_of(work, struct batadv_store_mesh_work, work); | |
983 | ||
984 | rtnl_lock(); | |
985 | ret = batadv_store_mesh_iface_finish(store_work->net_dev, | |
986 | store_work->soft_iface_name); | |
987 | rtnl_unlock(); | |
988 | ||
989 | if (ret < 0) | |
990 | pr_err("Failed to store new mesh_iface state %s for %s: %d\n", | |
991 | store_work->soft_iface_name, store_work->net_dev->name, | |
992 | ret); | |
993 | ||
994 | dev_put(store_work->net_dev); | |
995 | kfree(store_work); | |
996 | } | |
997 | ||
998 | static ssize_t batadv_store_mesh_iface(struct kobject *kobj, | |
999 | struct attribute *attr, char *buff, | |
1000 | size_t count) | |
1001 | { | |
1002 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1003 | struct batadv_store_mesh_work *store_work; | |
1004 | ||
1005 | if (buff[count - 1] == '\n') | |
1006 | buff[count - 1] = '\0'; | |
1007 | ||
1008 | if (strlen(buff) >= IFNAMSIZ) { | |
1009 | pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", | |
1010 | buff); | |
1011 | return -EINVAL; | |
1012 | } | |
1013 | ||
1014 | store_work = kmalloc(sizeof(*store_work), GFP_KERNEL); | |
1015 | if (!store_work) | |
1016 | return -ENOMEM; | |
1017 | ||
1018 | dev_hold(net_dev); | |
1019 | INIT_WORK(&store_work->work, batadv_store_mesh_iface_work); | |
1020 | store_work->net_dev = net_dev; | |
1021 | strlcpy(store_work->soft_iface_name, buff, | |
1022 | sizeof(store_work->soft_iface_name)); | |
1023 | ||
1024 | queue_work(batadv_event_workqueue, &store_work->work); | |
1025 | ||
1026 | return count; | |
1027 | } | |
1028 | ||
0ff9b86f SE |
1029 | static ssize_t batadv_show_iface_status(struct kobject *kobj, |
1030 | struct attribute *attr, char *buff) | |
c6c8fea2 | 1031 | { |
0ff9b86f | 1032 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 1033 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 SE |
1034 | ssize_t length; |
1035 | ||
56303d34 | 1036 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 1037 | if (!hard_iface) |
c6c8fea2 SE |
1038 | return 0; |
1039 | ||
e6c10f43 | 1040 | switch (hard_iface->if_status) { |
e9a4f295 | 1041 | case BATADV_IF_TO_BE_REMOVED: |
c6c8fea2 SE |
1042 | length = sprintf(buff, "disabling\n"); |
1043 | break; | |
e9a4f295 | 1044 | case BATADV_IF_INACTIVE: |
c6c8fea2 SE |
1045 | length = sprintf(buff, "inactive\n"); |
1046 | break; | |
e9a4f295 | 1047 | case BATADV_IF_ACTIVE: |
c6c8fea2 SE |
1048 | length = sprintf(buff, "active\n"); |
1049 | break; | |
e9a4f295 | 1050 | case BATADV_IF_TO_BE_ACTIVATED: |
c6c8fea2 SE |
1051 | length = sprintf(buff, "enabling\n"); |
1052 | break; | |
e9a4f295 | 1053 | case BATADV_IF_NOT_IN_USE: |
c6c8fea2 SE |
1054 | default: |
1055 | length = sprintf(buff, "not in use\n"); | |
1056 | break; | |
1057 | } | |
1058 | ||
82047ad7 | 1059 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
1060 | |
1061 | return length; | |
1062 | } | |
1063 | ||
0b5ecc68 AQ |
1064 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
1065 | ||
1066 | /** | |
7e9a8c2c | 1067 | * batadv_store_throughput_override() - parse and store throughput override |
0b5ecc68 AQ |
1068 | * entered by the user |
1069 | * @kobj: kobject representing the private mesh sysfs directory | |
1070 | * @attr: the batman-adv attribute the user is interacting with | |
1071 | * @buff: the buffer containing the user data | |
1072 | * @count: number of bytes in the buffer | |
1073 | * | |
1074 | * Return: 'count' on success or a negative error code in case of failure | |
1075 | */ | |
1076 | static ssize_t batadv_store_throughput_override(struct kobject *kobj, | |
1077 | struct attribute *attr, | |
1078 | char *buff, size_t count) | |
1079 | { | |
1080 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1081 | struct batadv_hard_iface *hard_iface; | |
1082 | u32 tp_override; | |
1083 | u32 old_tp_override; | |
1084 | bool ret; | |
1085 | ||
1086 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1087 | if (!hard_iface) | |
1088 | return -EINVAL; | |
1089 | ||
1090 | if (buff[count - 1] == '\n') | |
1091 | buff[count - 1] = '\0'; | |
1092 | ||
1093 | ret = batadv_parse_throughput(net_dev, buff, "throughput_override", | |
1094 | &tp_override); | |
1095 | if (!ret) | |
1096 | return count; | |
1097 | ||
1098 | old_tp_override = atomic_read(&hard_iface->bat_v.throughput_override); | |
1099 | if (old_tp_override == tp_override) | |
1100 | goto out; | |
1101 | ||
b9fd14c2 SE |
1102 | batadv_info(hard_iface->soft_iface, |
1103 | "%s: %s: Changing from: %u.%u MBit to: %u.%u MBit\n", | |
1104 | "throughput_override", net_dev->name, | |
0b5ecc68 AQ |
1105 | old_tp_override / 10, old_tp_override % 10, |
1106 | tp_override / 10, tp_override % 10); | |
1107 | ||
1108 | atomic_set(&hard_iface->bat_v.throughput_override, tp_override); | |
1109 | ||
1110 | out: | |
1111 | batadv_hardif_put(hard_iface); | |
1112 | return count; | |
1113 | } | |
1114 | ||
1115 | static ssize_t batadv_show_throughput_override(struct kobject *kobj, | |
1116 | struct attribute *attr, | |
1117 | char *buff) | |
1118 | { | |
1119 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1120 | struct batadv_hard_iface *hard_iface; | |
1121 | u32 tp_override; | |
1122 | ||
1123 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1124 | if (!hard_iface) | |
1125 | return -EINVAL; | |
1126 | ||
1127 | tp_override = atomic_read(&hard_iface->bat_v.throughput_override); | |
1128 | ||
1129 | return sprintf(buff, "%u.%u MBit\n", tp_override / 10, | |
1130 | tp_override % 10); | |
1131 | } | |
1132 | ||
1133 | #endif | |
1134 | ||
507b37cf | 1135 | static BATADV_ATTR(mesh_iface, 0644, batadv_show_mesh_iface, |
347c80f0 | 1136 | batadv_store_mesh_iface); |
507b37cf | 1137 | static BATADV_ATTR(iface_status, 0444, batadv_show_iface_status, NULL); |
7f136cd4 | 1138 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
507b37cf | 1139 | BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, 0644, |
7f136cd4 | 1140 | 2 * BATADV_JITTER, INT_MAX, NULL); |
507b37cf | 1141 | static BATADV_ATTR(throughput_override, 0644, batadv_show_throughput_override, |
0b5ecc68 | 1142 | batadv_store_throughput_override); |
7f136cd4 | 1143 | #endif |
c6c8fea2 | 1144 | |
b4d66b87 | 1145 | static struct batadv_attribute *batadv_batman_attrs[] = { |
0ff9b86f SE |
1146 | &batadv_attr_mesh_iface, |
1147 | &batadv_attr_iface_status, | |
7f136cd4 LL |
1148 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
1149 | &batadv_attr_elp_interval, | |
0b5ecc68 | 1150 | &batadv_attr_throughput_override, |
7f136cd4 | 1151 | #endif |
c6c8fea2 SE |
1152 | NULL, |
1153 | }; | |
1154 | ||
ff15c27c SE |
1155 | /** |
1156 | * batadv_sysfs_add_hardif() - Add hard interface specific sysfs entries | |
1157 | * @hardif_obj: address where to store the pointer to new sysfs folder | |
1158 | * @dev: netdev struct of the hard interface | |
1159 | * | |
1160 | * Return: 0 on success or negative error number in case of failure | |
1161 | */ | |
5853e22c | 1162 | int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) |
c6c8fea2 SE |
1163 | { |
1164 | struct kobject *hardif_kobject = &dev->dev.kobj; | |
b4d66b87 | 1165 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
1166 | int err; |
1167 | ||
036cbfeb SE |
1168 | *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, |
1169 | hardif_kobject); | |
c6c8fea2 SE |
1170 | |
1171 | if (!*hardif_obj) { | |
3e34819e | 1172 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 1173 | BATADV_SYSFS_IF_BAT_SUBDIR); |
c6c8fea2 SE |
1174 | goto out; |
1175 | } | |
1176 | ||
0ff9b86f | 1177 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
1178 | err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); |
1179 | if (err) { | |
3e34819e | 1180 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 1181 | dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, |
3e34819e | 1182 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
1183 | goto rem_attr; |
1184 | } | |
1185 | } | |
1186 | ||
1187 | return 0; | |
1188 | ||
1189 | rem_attr: | |
0ff9b86f | 1190 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
1191 | sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); |
1192 | out: | |
1193 | return -ENOMEM; | |
1194 | } | |
1195 | ||
ff15c27c SE |
1196 | /** |
1197 | * batadv_sysfs_del_hardif() - Remove hard interface specific sysfs entries | |
1198 | * @hardif_obj: address to the pointer to which stores batman-adv sysfs folder | |
1199 | * of the hard interface | |
1200 | */ | |
5853e22c | 1201 | void batadv_sysfs_del_hardif(struct kobject **hardif_obj) |
c6c8fea2 | 1202 | { |
f4acb108 SE |
1203 | kobject_uevent(*hardif_obj, KOBJ_REMOVE); |
1204 | kobject_del(*hardif_obj); | |
c6c8fea2 SE |
1205 | kobject_put(*hardif_obj); |
1206 | *hardif_obj = NULL; | |
1207 | } | |
c6bda689 | 1208 | |
ff15c27c SE |
1209 | /** |
1210 | * batadv_throw_uevent() - Send an uevent with batman-adv specific env data | |
1211 | * @bat_priv: the bat priv with all the soft interface information | |
1212 | * @type: subsystem type of event. Stored in uevent's BATTYPE | |
1213 | * @action: action type of event. Stored in uevent's BATACTION | |
1214 | * @data: string with additional information to the event (ignored for | |
1215 | * BATADV_UEV_DEL). Stored in uevent's BATDATA | |
1216 | * | |
1217 | * Return: 0 on success or negative error number in case of failure | |
1218 | */ | |
56303d34 | 1219 | int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, |
39c75a51 | 1220 | enum batadv_uev_action action, const char *data) |
c6bda689 | 1221 | { |
5346c35e | 1222 | int ret = -ENOMEM; |
c6bda689 AQ |
1223 | struct kobject *bat_kobj; |
1224 | char *uevent_env[4] = { NULL, NULL, NULL, NULL }; | |
1225 | ||
736292c2 | 1226 | bat_kobj = &bat_priv->soft_iface->dev.kobj; |
c6bda689 | 1227 | |
b98fe24c HS |
1228 | uevent_env[0] = kasprintf(GFP_ATOMIC, |
1229 | "%s%s", BATADV_UEV_TYPE_VAR, | |
1230 | batadv_uev_type_str[type]); | |
c6bda689 AQ |
1231 | if (!uevent_env[0]) |
1232 | goto out; | |
1233 | ||
b98fe24c HS |
1234 | uevent_env[1] = kasprintf(GFP_ATOMIC, |
1235 | "%s%s", BATADV_UEV_ACTION_VAR, | |
1236 | batadv_uev_action_str[action]); | |
c6bda689 AQ |
1237 | if (!uevent_env[1]) |
1238 | goto out; | |
1239 | ||
c6bda689 | 1240 | /* If the event is DEL, ignore the data field */ |
39c75a51 | 1241 | if (action != BATADV_UEV_DEL) { |
b98fe24c HS |
1242 | uevent_env[2] = kasprintf(GFP_ATOMIC, |
1243 | "%s%s", BATADV_UEV_DATA_VAR, data); | |
c6bda689 AQ |
1244 | if (!uevent_env[2]) |
1245 | goto out; | |
c6bda689 AQ |
1246 | } |
1247 | ||
1248 | ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env); | |
1249 | out: | |
1250 | kfree(uevent_env[0]); | |
1251 | kfree(uevent_env[1]); | |
1252 | kfree(uevent_env[2]); | |
1253 | ||
c6bda689 | 1254 | if (ret) |
39c75a51 | 1255 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf | 1256 | "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n", |
0ff9b86f SE |
1257 | batadv_uev_type_str[type], |
1258 | batadv_uev_action_str[action], | |
39c75a51 | 1259 | (action == BATADV_UEV_DEL ? "NULL" : data), ret); |
c6bda689 AQ |
1260 | return ret; |
1261 | } |