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7db7d9f3 | 1 | // SPDX-License-Identifier: GPL-2.0 |
7a79d717 | 2 | /* Copyright (C) 2010-2019 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> |
e2d0d35b | 43 | #include <uapi/linux/batman_adv.h> |
1e2c2a4f | 44 | |
fcafa5e7 | 45 | #include "bridge_loop_avoidance.h" |
33af49ad | 46 | #include "distributed-arp-table.h" |
1e2c2a4f SE |
47 | #include "gateway_client.h" |
48 | #include "gateway_common.h" | |
c6c8fea2 | 49 | #include "hard-interface.h" |
ba412080 | 50 | #include "log.h" |
7e6f461e | 51 | #include "netlink.h" |
1e2c2a4f | 52 | #include "network-coding.h" |
90f4435d | 53 | #include "soft-interface.h" |
c6c8fea2 | 54 | |
0ff9b86f | 55 | static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) |
3d222bba SE |
56 | { |
57 | struct device *dev = container_of(obj->parent, struct device, kobj); | |
f138694b | 58 | |
3d222bba SE |
59 | return to_net_dev(dev); |
60 | } | |
61 | ||
56303d34 | 62 | static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) |
3d222bba | 63 | { |
0ff9b86f | 64 | struct net_device *net_dev = batadv_kobj_to_netdev(obj); |
f138694b | 65 | |
3d222bba SE |
66 | return netdev_priv(net_dev); |
67 | } | |
c6c8fea2 | 68 | |
90f4435d | 69 | /** |
7e9a8c2c | 70 | * batadv_vlan_kobj_to_batpriv() - convert a vlan kobj in the associated batpriv |
90f4435d AQ |
71 | * @obj: kobject to covert |
72 | * | |
62fe710f | 73 | * Return: the associated batadv_priv struct. |
90f4435d AQ |
74 | */ |
75 | static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) | |
76 | { | |
77 | /* VLAN specific attributes are located in the root sysfs folder if they | |
78 | * refer to the untagged VLAN.. | |
79 | */ | |
80 | if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) | |
81 | return batadv_kobj_to_batpriv(obj); | |
82 | ||
83 | /* ..while the attributes for the tagged vlans are located in | |
84 | * the in the corresponding "vlan%VID" subfolder | |
85 | */ | |
86 | return batadv_kobj_to_batpriv(obj->parent); | |
87 | } | |
88 | ||
89 | /** | |
7e9a8c2c | 90 | * batadv_kobj_to_vlan() - convert a kobj in the associated softif_vlan struct |
7afcbbef | 91 | * @bat_priv: the bat priv with all the soft interface information |
90f4435d AQ |
92 | * @obj: kobject to covert |
93 | * | |
62fe710f | 94 | * Return: the associated softif_vlan struct if found, NULL otherwise. |
90f4435d AQ |
95 | */ |
96 | static struct batadv_softif_vlan * | |
97 | batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) | |
98 | { | |
99 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
100 | ||
101 | rcu_read_lock(); | |
102 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
103 | if (vlan_tmp->kobj != obj) | |
104 | continue; | |
105 | ||
6be4d30c | 106 | if (!kref_get_unless_zero(&vlan_tmp->refcount)) |
90f4435d AQ |
107 | continue; |
108 | ||
109 | vlan = vlan_tmp; | |
110 | break; | |
111 | } | |
112 | rcu_read_unlock(); | |
113 | ||
114 | return vlan; | |
115 | } | |
116 | ||
347c80f0 SE |
117 | #define BATADV_UEV_TYPE_VAR "BATTYPE=" |
118 | #define BATADV_UEV_ACTION_VAR "BATACTION=" | |
119 | #define BATADV_UEV_DATA_VAR "BATDATA=" | |
c6bda689 | 120 | |
0ff9b86f | 121 | static char *batadv_uev_action_str[] = { |
c6bda689 AQ |
122 | "add", |
123 | "del", | |
cd9c7bfb SW |
124 | "change", |
125 | "loopdetect", | |
c6bda689 AQ |
126 | }; |
127 | ||
0ff9b86f | 128 | static char *batadv_uev_type_str[] = { |
cd9c7bfb SW |
129 | "gw", |
130 | "bla", | |
c6bda689 AQ |
131 | }; |
132 | ||
90f4435d AQ |
133 | /* Use this, if you have customized show and store functions for vlan attrs */ |
134 | #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ | |
135 | struct batadv_attribute batadv_attr_vlan_##_name = { \ | |
136 | .attr = {.name = __stringify(_name), \ | |
137 | .mode = _mode }, \ | |
138 | .show = _show, \ | |
139 | .store = _store, \ | |
2b64df20 | 140 | } |
90f4435d | 141 | |
c6c8fea2 | 142 | /* Use this, if you have customized show and store functions */ |
347c80f0 | 143 | #define BATADV_ATTR(_name, _mode, _show, _store) \ |
b4d66b87 | 144 | struct batadv_attribute batadv_attr_##_name = { \ |
347c80f0 SE |
145 | .attr = {.name = __stringify(_name), \ |
146 | .mode = _mode }, \ | |
147 | .show = _show, \ | |
148 | .store = _store, \ | |
2b64df20 | 149 | } |
c6c8fea2 | 150 | |
347c80f0 | 151 | #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ |
0ff9b86f SE |
152 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
153 | struct attribute *attr, char *buff, \ | |
154 | size_t count) \ | |
c6c8fea2 | 155 | { \ |
0ff9b86f | 156 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 157 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
7e6f461e SE |
158 | ssize_t length; \ |
159 | \ | |
160 | length = __batadv_store_bool_attr(buff, count, _post_func, attr,\ | |
161 | &bat_priv->_name, net_dev); \ | |
f138694b | 162 | \ |
7e6f461e SE |
163 | batadv_netlink_notify_mesh(bat_priv); \ |
164 | \ | |
165 | return length; \ | |
c6c8fea2 SE |
166 | } |
167 | ||
347c80f0 | 168 | #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ |
0ff9b86f SE |
169 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
170 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 171 | { \ |
56303d34 | 172 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 173 | \ |
c6c8fea2 SE |
174 | return sprintf(buff, "%s\n", \ |
175 | atomic_read(&bat_priv->_name) == 0 ? \ | |
176 | "disabled" : "enabled"); \ | |
177 | } \ | |
178 | ||
f245c38b | 179 | /* Use this, if you are going to turn a [name] in the soft-interface |
9cfc7bd6 SE |
180 | * (bat_priv) on or off |
181 | */ | |
347c80f0 SE |
182 | #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \ |
183 | static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ | |
184 | static BATADV_ATTR_SIF_SHOW_BOOL(_name) \ | |
185 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
186 | batadv_store_##_name) | |
c6c8fea2 | 187 | |
6f70eb75 | 188 | #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ |
0ff9b86f SE |
189 | ssize_t batadv_store_##_name(struct kobject *kobj, \ |
190 | struct attribute *attr, char *buff, \ | |
191 | size_t count) \ | |
c6c8fea2 | 192 | { \ |
0ff9b86f | 193 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ |
56303d34 | 194 | struct batadv_priv *bat_priv = netdev_priv(net_dev); \ |
7e6f461e | 195 | ssize_t length; \ |
f138694b | 196 | \ |
7e6f461e SE |
197 | length = __batadv_store_uint_attr(buff, count, _min, _max, \ |
198 | _post_func, attr, \ | |
199 | &bat_priv->_var, net_dev, \ | |
200 | NULL); \ | |
201 | \ | |
202 | batadv_netlink_notify_mesh(bat_priv); \ | |
203 | \ | |
204 | return length; \ | |
c6c8fea2 SE |
205 | } |
206 | ||
6f70eb75 | 207 | #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ |
0ff9b86f SE |
208 | ssize_t batadv_show_##_name(struct kobject *kobj, \ |
209 | struct attribute *attr, char *buff) \ | |
c6c8fea2 | 210 | { \ |
56303d34 | 211 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
f138694b | 212 | \ |
6f70eb75 | 213 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ |
c6c8fea2 SE |
214 | } \ |
215 | ||
f245c38b | 216 | /* Use this, if you are going to set [name] in the soft-interface |
9cfc7bd6 SE |
217 | * (bat_priv) to an unsigned integer value |
218 | */ | |
6f70eb75 AQ |
219 | #define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ |
220 | static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\ | |
221 | static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ | |
347c80f0 SE |
222 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ |
223 | batadv_store_##_name) | |
c6c8fea2 | 224 | |
90f4435d AQ |
225 | #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ |
226 | ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ | |
227 | struct attribute *attr, char *buff, \ | |
228 | size_t count) \ | |
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 = __batadv_store_bool_attr(buff, count, _post_func, \ | |
234 | attr, &vlan->_name, \ | |
235 | bat_priv->soft_iface); \ | |
f138694b | 236 | \ |
7e6f461e SE |
237 | if (vlan->vid) \ |
238 | batadv_netlink_notify_vlan(bat_priv, vlan); \ | |
239 | else \ | |
240 | batadv_netlink_notify_mesh(bat_priv); \ | |
241 | \ | |
9c3bf081 | 242 | batadv_softif_vlan_put(vlan); \ |
90f4435d AQ |
243 | return res; \ |
244 | } | |
245 | ||
246 | #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
247 | ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ | |
248 | struct attribute *attr, char *buff) \ | |
249 | { \ | |
250 | struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ | |
251 | struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ | |
252 | kobj); \ | |
253 | size_t res = sprintf(buff, "%s\n", \ | |
254 | atomic_read(&vlan->_name) == 0 ? \ | |
255 | "disabled" : "enabled"); \ | |
f138694b | 256 | \ |
9c3bf081 | 257 | batadv_softif_vlan_put(vlan); \ |
90f4435d AQ |
258 | return res; \ |
259 | } | |
260 | ||
261 | /* Use this, if you are going to turn a [name] in the vlan struct on or off */ | |
262 | #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \ | |
263 | static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ | |
264 | static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ | |
265 | static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \ | |
266 | batadv_store_vlan_##_name) | |
0744ff8f LL |
267 | |
268 | #define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ | |
269 | ssize_t batadv_store_##_name(struct kobject *kobj, \ | |
270 | struct attribute *attr, char *buff, \ | |
271 | size_t count) \ | |
272 | { \ | |
273 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ | |
274 | struct batadv_hard_iface *hard_iface; \ | |
7e6f461e | 275 | struct batadv_priv *bat_priv; \ |
0744ff8f LL |
276 | ssize_t length; \ |
277 | \ | |
278 | hard_iface = batadv_hardif_get_by_netdev(net_dev); \ | |
279 | if (!hard_iface) \ | |
280 | return 0; \ | |
281 | \ | |
282 | length = __batadv_store_uint_attr(buff, count, _min, _max, \ | |
283 | _post_func, attr, \ | |
a25bab9d SE |
284 | &hard_iface->_var, \ |
285 | hard_iface->soft_iface, \ | |
286 | net_dev); \ | |
0744ff8f | 287 | \ |
7e6f461e SE |
288 | if (hard_iface->soft_iface) { \ |
289 | bat_priv = netdev_priv(hard_iface->soft_iface); \ | |
290 | batadv_netlink_notify_hardif(bat_priv, hard_iface); \ | |
291 | } \ | |
292 | \ | |
0744ff8f LL |
293 | batadv_hardif_put(hard_iface); \ |
294 | return length; \ | |
295 | } | |
296 | ||
297 | #define BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ | |
298 | ssize_t batadv_show_##_name(struct kobject *kobj, \ | |
299 | struct attribute *attr, char *buff) \ | |
300 | { \ | |
301 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ | |
302 | struct batadv_hard_iface *hard_iface; \ | |
303 | ssize_t length; \ | |
304 | \ | |
305 | hard_iface = batadv_hardif_get_by_netdev(net_dev); \ | |
306 | if (!hard_iface) \ | |
307 | return 0; \ | |
308 | \ | |
309 | length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var)); \ | |
310 | \ | |
311 | batadv_hardif_put(hard_iface); \ | |
312 | return length; \ | |
313 | } | |
314 | ||
315 | /* Use this, if you are going to set [name] in hard_iface to an | |
316 | * unsigned integer value | |
317 | */ | |
318 | #define BATADV_ATTR_HIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ | |
319 | static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, \ | |
320 | _max, _post_func) \ | |
321 | static BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ | |
322 | static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ | |
323 | batadv_store_##_name) | |
c6c8fea2 | 324 | |
0ff9b86f SE |
325 | static int batadv_store_bool_attr(char *buff, size_t count, |
326 | struct net_device *net_dev, | |
9e728e84 SW |
327 | const char *attr_name, atomic_t *attr, |
328 | bool *changed) | |
c6c8fea2 SE |
329 | { |
330 | int enabled = -1; | |
331 | ||
9e728e84 SW |
332 | *changed = false; |
333 | ||
c6c8fea2 SE |
334 | if (buff[count - 1] == '\n') |
335 | buff[count - 1] = '\0'; | |
336 | ||
337 | if ((strncmp(buff, "1", 2) == 0) || | |
338 | (strncmp(buff, "enable", 7) == 0) || | |
339 | (strncmp(buff, "enabled", 8) == 0)) | |
340 | enabled = 1; | |
341 | ||
342 | if ((strncmp(buff, "0", 2) == 0) || | |
343 | (strncmp(buff, "disable", 8) == 0) || | |
344 | (strncmp(buff, "disabled", 9) == 0)) | |
345 | enabled = 0; | |
346 | ||
347 | if (enabled < 0) { | |
3e34819e SE |
348 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
349 | attr_name, buff); | |
c6c8fea2 SE |
350 | return -EINVAL; |
351 | } | |
352 | ||
353 | if (atomic_read(attr) == enabled) | |
354 | return count; | |
355 | ||
3e34819e SE |
356 | batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, |
357 | atomic_read(attr) == 1 ? "enabled" : "disabled", | |
358 | enabled == 1 ? "enabled" : "disabled"); | |
c6c8fea2 | 359 | |
9e728e84 SW |
360 | *changed = true; |
361 | ||
95c96174 | 362 | atomic_set(attr, (unsigned int)enabled); |
c6c8fea2 SE |
363 | return count; |
364 | } | |
365 | ||
0ff9b86f SE |
366 | static inline ssize_t |
367 | __batadv_store_bool_attr(char *buff, size_t count, | |
368 | void (*post_func)(struct net_device *), | |
369 | struct attribute *attr, | |
370 | atomic_t *attr_store, struct net_device *net_dev) | |
c6c8fea2 | 371 | { |
9e728e84 | 372 | bool changed; |
c6c8fea2 SE |
373 | int ret; |
374 | ||
0ff9b86f | 375 | ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, |
9e728e84 SW |
376 | attr_store, &changed); |
377 | if (post_func && changed) | |
c6c8fea2 SE |
378 | post_func(net_dev); |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
0ff9b86f SE |
383 | static int batadv_store_uint_attr(const char *buff, size_t count, |
384 | struct net_device *net_dev, | |
a25bab9d | 385 | struct net_device *slave_dev, |
0ff9b86f SE |
386 | const char *attr_name, |
387 | unsigned int min, unsigned int max, | |
388 | atomic_t *attr) | |
c6c8fea2 | 389 | { |
a25bab9d | 390 | char ifname[IFNAMSIZ + 3] = ""; |
c6c8fea2 SE |
391 | unsigned long uint_val; |
392 | int ret; | |
393 | ||
25a92b13 | 394 | ret = kstrtoul(buff, 10, &uint_val); |
c6c8fea2 | 395 | if (ret) { |
3e34819e SE |
396 | batadv_info(net_dev, "%s: Invalid parameter received: %s\n", |
397 | attr_name, buff); | |
c6c8fea2 SE |
398 | return -EINVAL; |
399 | } | |
400 | ||
401 | if (uint_val < min) { | |
3e34819e SE |
402 | batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", |
403 | attr_name, uint_val, min); | |
c6c8fea2 SE |
404 | return -EINVAL; |
405 | } | |
406 | ||
407 | if (uint_val > max) { | |
3e34819e SE |
408 | batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", |
409 | attr_name, uint_val, max); | |
c6c8fea2 SE |
410 | return -EINVAL; |
411 | } | |
412 | ||
413 | if (atomic_read(attr) == uint_val) | |
414 | return count; | |
415 | ||
a25bab9d SE |
416 | if (slave_dev) |
417 | snprintf(ifname, sizeof(ifname), "%s: ", slave_dev->name); | |
418 | ||
419 | batadv_info(net_dev, "%s: %sChanging from: %i to: %lu\n", | |
420 | attr_name, ifname, atomic_read(attr), uint_val); | |
c6c8fea2 SE |
421 | |
422 | atomic_set(attr, uint_val); | |
423 | return count; | |
424 | } | |
425 | ||
c149ca72 AQ |
426 | static ssize_t __batadv_store_uint_attr(const char *buff, size_t count, |
427 | int min, int max, | |
428 | void (*post_func)(struct net_device *), | |
429 | const struct attribute *attr, | |
430 | atomic_t *attr_store, | |
a25bab9d SE |
431 | struct net_device *net_dev, |
432 | struct net_device *slave_dev) | |
c6c8fea2 SE |
433 | { |
434 | int ret; | |
435 | ||
a25bab9d SE |
436 | ret = batadv_store_uint_attr(buff, count, net_dev, slave_dev, |
437 | attr->name, min, max, attr_store); | |
c6c8fea2 SE |
438 | if (post_func && ret) |
439 | post_func(net_dev); | |
440 | ||
441 | return ret; | |
442 | } | |
443 | ||
0ff9b86f SE |
444 | static ssize_t batadv_show_bat_algo(struct kobject *kobj, |
445 | struct attribute *attr, char *buff) | |
ea3d2fd1 | 446 | { |
56303d34 | 447 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
f138694b | 448 | |
29824a55 | 449 | return sprintf(buff, "%s\n", bat_priv->algo_ops->name); |
ea3d2fd1 ML |
450 | } |
451 | ||
4e820e72 | 452 | static void batadv_post_gw_reselect(struct net_device *net_dev) |
c6c8fea2 | 453 | { |
56303d34 | 454 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
f138694b | 455 | |
4e820e72 | 456 | batadv_gw_reselect(bat_priv); |
c6c8fea2 SE |
457 | } |
458 | ||
0ff9b86f SE |
459 | static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, |
460 | char *buff) | |
c6c8fea2 | 461 | { |
56303d34 | 462 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
c6c8fea2 SE |
463 | int bytes_written; |
464 | ||
a8d8d1de AQ |
465 | /* GW mode is not available if the routing algorithm in use does not |
466 | * implement 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 -ENOENT; | |
471 | ||
3a24a63e | 472 | switch (atomic_read(&bat_priv->gw.mode)) { |
cd646ab1 | 473 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 SE |
474 | bytes_written = sprintf(buff, "%s\n", |
475 | BATADV_GW_MODE_CLIENT_NAME); | |
c6c8fea2 | 476 | break; |
cd646ab1 | 477 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 SE |
478 | bytes_written = sprintf(buff, "%s\n", |
479 | BATADV_GW_MODE_SERVER_NAME); | |
c6c8fea2 SE |
480 | break; |
481 | default: | |
97ea4ba1 SE |
482 | bytes_written = sprintf(buff, "%s\n", |
483 | BATADV_GW_MODE_OFF_NAME); | |
c6c8fea2 SE |
484 | break; |
485 | } | |
486 | ||
487 | return bytes_written; | |
488 | } | |
489 | ||
0ff9b86f SE |
490 | static ssize_t batadv_store_gw_mode(struct kobject *kobj, |
491 | struct attribute *attr, char *buff, | |
492 | size_t count) | |
c6c8fea2 | 493 | { |
0ff9b86f | 494 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 495 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
c6c8fea2 SE |
496 | char *curr_gw_mode_str; |
497 | int gw_mode_tmp = -1; | |
498 | ||
a8d8d1de AQ |
499 | /* toggling GW mode is allowed only if the routing algorithm in use |
500 | * provides the GW API | |
501 | */ | |
502 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
503 | !bat_priv->algo_ops->gw.is_eligible) | |
504 | return -EINVAL; | |
505 | ||
c6c8fea2 SE |
506 | if (buff[count - 1] == '\n') |
507 | buff[count - 1] = '\0'; | |
508 | ||
97ea4ba1 SE |
509 | if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, |
510 | strlen(BATADV_GW_MODE_OFF_NAME)) == 0) | |
cd646ab1 | 511 | gw_mode_tmp = BATADV_GW_MODE_OFF; |
c6c8fea2 | 512 | |
97ea4ba1 SE |
513 | if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, |
514 | strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) | |
cd646ab1 | 515 | gw_mode_tmp = BATADV_GW_MODE_CLIENT; |
c6c8fea2 | 516 | |
97ea4ba1 SE |
517 | if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, |
518 | strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) | |
cd646ab1 | 519 | gw_mode_tmp = BATADV_GW_MODE_SERVER; |
c6c8fea2 SE |
520 | |
521 | if (gw_mode_tmp < 0) { | |
3e34819e SE |
522 | batadv_info(net_dev, |
523 | "Invalid parameter for 'gw mode' setting received: %s\n", | |
524 | buff); | |
c6c8fea2 SE |
525 | return -EINVAL; |
526 | } | |
527 | ||
3a24a63e | 528 | if (atomic_read(&bat_priv->gw.mode) == gw_mode_tmp) |
c6c8fea2 SE |
529 | return count; |
530 | ||
3a24a63e | 531 | switch (atomic_read(&bat_priv->gw.mode)) { |
cd646ab1 | 532 | case BATADV_GW_MODE_CLIENT: |
97ea4ba1 | 533 | curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; |
c6c8fea2 | 534 | break; |
cd646ab1 | 535 | case BATADV_GW_MODE_SERVER: |
97ea4ba1 | 536 | curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; |
c6c8fea2 SE |
537 | break; |
538 | default: | |
97ea4ba1 | 539 | curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; |
c6c8fea2 SE |
540 | break; |
541 | } | |
542 | ||
3e34819e SE |
543 | batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", |
544 | curr_gw_mode_str, buff); | |
c6c8fea2 | 545 | |
f3163181 AQ |
546 | /* Invoking batadv_gw_reselect() is not enough to really de-select the |
547 | * current GW. It will only instruct the gateway client code to perform | |
548 | * a re-election the next time that this is needed. | |
549 | * | |
550 | * When gw client mode is being switched off the current GW must be | |
551 | * de-selected explicitly otherwise no GW_ADD uevent is thrown on | |
552 | * client mode re-activation. This is operation is performed in | |
553 | * batadv_gw_check_client_stop(). | |
554 | */ | |
4e820e72 | 555 | batadv_gw_reselect(bat_priv); |
c6eaa3f0 AQ |
556 | /* always call batadv_gw_check_client_stop() before changing the gateway |
557 | * state | |
558 | */ | |
559 | batadv_gw_check_client_stop(bat_priv); | |
3a24a63e | 560 | atomic_set(&bat_priv->gw.mode, (unsigned int)gw_mode_tmp); |
414254e3 | 561 | batadv_gw_tvlv_container_update(bat_priv); |
7e6f461e SE |
562 | |
563 | batadv_netlink_notify_mesh(bat_priv); | |
564 | ||
c6c8fea2 SE |
565 | return count; |
566 | } | |
567 | ||
08686943 AQ |
568 | static ssize_t batadv_show_gw_sel_class(struct kobject *kobj, |
569 | struct attribute *attr, char *buff) | |
570 | { | |
571 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
572 | ||
a8d8d1de AQ |
573 | /* GW selection class is not available if the routing algorithm in use |
574 | * does not implement the GW API | |
575 | */ | |
576 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
577 | !bat_priv->algo_ops->gw.is_eligible) | |
578 | return -ENOENT; | |
579 | ||
08686943 AQ |
580 | if (bat_priv->algo_ops->gw.show_sel_class) |
581 | return bat_priv->algo_ops->gw.show_sel_class(bat_priv, buff); | |
582 | ||
583 | return sprintf(buff, "%i\n", atomic_read(&bat_priv->gw.sel_class)); | |
584 | } | |
585 | ||
586 | static ssize_t batadv_store_gw_sel_class(struct kobject *kobj, | |
587 | struct attribute *attr, char *buff, | |
588 | size_t count) | |
589 | { | |
590 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
7e6f461e | 591 | ssize_t length; |
08686943 | 592 | |
a8d8d1de AQ |
593 | /* setting the GW selection class is allowed only if the routing |
594 | * algorithm in use implements the GW API | |
595 | */ | |
596 | if (!bat_priv->algo_ops->gw.get_best_gw_node || | |
597 | !bat_priv->algo_ops->gw.is_eligible) | |
598 | return -EINVAL; | |
599 | ||
08686943 AQ |
600 | if (buff[count - 1] == '\n') |
601 | buff[count - 1] = '\0'; | |
602 | ||
603 | if (bat_priv->algo_ops->gw.store_sel_class) | |
604 | return bat_priv->algo_ops->gw.store_sel_class(bat_priv, buff, | |
605 | count); | |
606 | ||
7e6f461e SE |
607 | length = __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE, |
608 | batadv_post_gw_reselect, attr, | |
609 | &bat_priv->gw.sel_class, | |
610 | bat_priv->soft_iface, NULL); | |
611 | ||
612 | batadv_netlink_notify_mesh(bat_priv); | |
613 | ||
614 | return length; | |
08686943 AQ |
615 | } |
616 | ||
0ff9b86f SE |
617 | static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, |
618 | struct attribute *attr, char *buff) | |
c6c8fea2 | 619 | { |
56303d34 | 620 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
6b5e971a | 621 | u32 down, up; |
414254e3 ML |
622 | |
623 | down = atomic_read(&bat_priv->gw.bandwidth_down); | |
624 | up = atomic_read(&bat_priv->gw.bandwidth_up); | |
625 | ||
626 | return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10, | |
627 | down % 10, up / 10, up % 10); | |
c6c8fea2 SE |
628 | } |
629 | ||
0ff9b86f SE |
630 | static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, |
631 | struct attribute *attr, char *buff, | |
632 | size_t count) | |
c6c8fea2 | 633 | { |
7e6f461e | 634 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
0ff9b86f | 635 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
7e6f461e | 636 | ssize_t length; |
c6c8fea2 SE |
637 | |
638 | if (buff[count - 1] == '\n') | |
639 | buff[count - 1] = '\0'; | |
640 | ||
7e6f461e SE |
641 | length = batadv_gw_bandwidth_set(net_dev, buff, count); |
642 | ||
643 | batadv_netlink_notify_mesh(bat_priv); | |
644 | ||
645 | return length; | |
c6c8fea2 SE |
646 | } |
647 | ||
c42edfe3 | 648 | /** |
7e9a8c2c | 649 | * batadv_show_isolation_mark() - print the current isolation mark/mask |
c42edfe3 AQ |
650 | * @kobj: kobject representing the private mesh sysfs directory |
651 | * @attr: the batman-adv attribute the user is interacting with | |
652 | * @buff: the buffer that will contain the data to send back to the user | |
653 | * | |
62fe710f | 654 | * Return: the number of bytes written into 'buff' on success or a negative |
c42edfe3 AQ |
655 | * error code in case of failure |
656 | */ | |
657 | static ssize_t batadv_show_isolation_mark(struct kobject *kobj, | |
658 | struct attribute *attr, char *buff) | |
659 | { | |
660 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); | |
661 | ||
662 | return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark, | |
663 | bat_priv->isolation_mark_mask); | |
664 | } | |
665 | ||
666 | /** | |
7e9a8c2c SE |
667 | * batadv_store_isolation_mark() - parse and store the isolation mark/mask |
668 | * entered by the user | |
c42edfe3 AQ |
669 | * @kobj: kobject representing the private mesh sysfs directory |
670 | * @attr: the batman-adv attribute the user is interacting with | |
671 | * @buff: the buffer containing the user data | |
672 | * @count: number of bytes in the buffer | |
673 | * | |
62fe710f | 674 | * Return: 'count' on success or a negative error code in case of failure |
c42edfe3 AQ |
675 | */ |
676 | static ssize_t batadv_store_isolation_mark(struct kobject *kobj, | |
677 | struct attribute *attr, char *buff, | |
678 | size_t count) | |
679 | { | |
680 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
681 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
6b5e971a | 682 | u32 mark, mask; |
c42edfe3 AQ |
683 | char *mask_ptr; |
684 | ||
685 | /* parse the mask if it has been specified, otherwise assume the mask is | |
686 | * the biggest possible | |
687 | */ | |
688 | mask = 0xFFFFFFFF; | |
689 | mask_ptr = strchr(buff, '/'); | |
690 | if (mask_ptr) { | |
691 | *mask_ptr = '\0'; | |
692 | mask_ptr++; | |
693 | ||
694 | /* the mask must be entered in hex base as it is going to be a | |
695 | * bitmask and not a prefix length | |
696 | */ | |
697 | if (kstrtou32(mask_ptr, 16, &mask) < 0) | |
698 | return -EINVAL; | |
699 | } | |
700 | ||
701 | /* the mark can be entered in any base */ | |
702 | if (kstrtou32(buff, 0, &mark) < 0) | |
703 | return -EINVAL; | |
704 | ||
705 | bat_priv->isolation_mark_mask = mask; | |
706 | /* erase bits not covered by the mask */ | |
707 | bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask; | |
708 | ||
709 | batadv_info(net_dev, | |
710 | "New skb mark for extended isolation: %#.8x/%#.8x\n", | |
711 | bat_priv->isolation_mark, bat_priv->isolation_mark_mask); | |
712 | ||
7e6f461e SE |
713 | batadv_netlink_notify_mesh(bat_priv); |
714 | ||
c42edfe3 AQ |
715 | return count; |
716 | } | |
717 | ||
507b37cf SE |
718 | BATADV_ATTR_SIF_BOOL(aggregated_ogms, 0644, NULL); |
719 | BATADV_ATTR_SIF_BOOL(bonding, 0644, NULL); | |
7a5cc242 | 720 | #ifdef CONFIG_BATMAN_ADV_BLA |
507b37cf | 721 | BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, 0644, batadv_bla_status_update); |
7a5cc242 | 722 | #endif |
33af49ad | 723 | #ifdef CONFIG_BATMAN_ADV_DAT |
507b37cf | 724 | BATADV_ATTR_SIF_BOOL(distributed_arp_table, 0644, batadv_dat_status_update); |
33af49ad | 725 | #endif |
507b37cf SE |
726 | BATADV_ATTR_SIF_BOOL(fragmentation, 0644, batadv_update_min_mtu); |
727 | static BATADV_ATTR(routing_algo, 0444, batadv_show_bat_algo, NULL); | |
728 | static BATADV_ATTR(gw_mode, 0644, batadv_show_gw_mode, batadv_store_gw_mode); | |
729 | BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, 0644, 2 * BATADV_JITTER, | |
730 | INT_MAX, NULL); | |
731 | BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, 0644, 0, BATADV_TQ_MAX_VALUE, | |
732 | NULL); | |
733 | static BATADV_ATTR(gw_sel_class, 0644, batadv_show_gw_sel_class, | |
08686943 | 734 | batadv_store_gw_sel_class); |
507b37cf | 735 | static BATADV_ATTR(gw_bandwidth, 0644, batadv_show_gw_bwidth, |
347c80f0 | 736 | batadv_store_gw_bwidth); |
1d8ab8d3 | 737 | #ifdef CONFIG_BATMAN_ADV_MCAST |
507b37cf | 738 | BATADV_ATTR_SIF_BOOL(multicast_mode, 0644, NULL); |
1d8ab8d3 | 739 | #endif |
c6c8fea2 | 740 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
507b37cf | 741 | BATADV_ATTR_SIF_UINT(log_level, log_level, 0644, 0, BATADV_DBG_ALL, NULL); |
c6c8fea2 | 742 | #endif |
d353d8d4 | 743 | #ifdef CONFIG_BATMAN_ADV_NC |
507b37cf | 744 | BATADV_ATTR_SIF_BOOL(network_coding, 0644, batadv_nc_status_update); |
d353d8d4 | 745 | #endif |
507b37cf SE |
746 | static BATADV_ATTR(isolation_mark, 0644, batadv_show_isolation_mark, |
747 | batadv_store_isolation_mark); | |
c6c8fea2 | 748 | |
b4d66b87 | 749 | static struct batadv_attribute *batadv_mesh_attrs[] = { |
0ff9b86f SE |
750 | &batadv_attr_aggregated_ogms, |
751 | &batadv_attr_bonding, | |
7a5cc242 | 752 | #ifdef CONFIG_BATMAN_ADV_BLA |
0ff9b86f | 753 | &batadv_attr_bridge_loop_avoidance, |
33af49ad AQ |
754 | #endif |
755 | #ifdef CONFIG_BATMAN_ADV_DAT | |
756 | &batadv_attr_distributed_arp_table, | |
1d8ab8d3 LL |
757 | #endif |
758 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
759 | &batadv_attr_multicast_mode, | |
7a5cc242 | 760 | #endif |
0ff9b86f | 761 | &batadv_attr_fragmentation, |
0ff9b86f SE |
762 | &batadv_attr_routing_algo, |
763 | &batadv_attr_gw_mode, | |
764 | &batadv_attr_orig_interval, | |
765 | &batadv_attr_hop_penalty, | |
766 | &batadv_attr_gw_sel_class, | |
767 | &batadv_attr_gw_bandwidth, | |
c6c8fea2 | 768 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
0ff9b86f | 769 | &batadv_attr_log_level, |
d353d8d4 MH |
770 | #endif |
771 | #ifdef CONFIG_BATMAN_ADV_NC | |
772 | &batadv_attr_network_coding, | |
c6c8fea2 | 773 | #endif |
c42edfe3 | 774 | &batadv_attr_isolation_mark, |
c6c8fea2 SE |
775 | NULL, |
776 | }; | |
777 | ||
507b37cf | 778 | BATADV_ATTR_VLAN_BOOL(ap_isolation, 0644, NULL); |
b8cbd81d | 779 | |
f34ac9d4 | 780 | /* array of vlan specific sysfs attributes */ |
90f4435d | 781 | static struct batadv_attribute *batadv_vlan_attrs[] = { |
b8cbd81d | 782 | &batadv_attr_vlan_ap_isolation, |
90f4435d AQ |
783 | NULL, |
784 | }; | |
785 | ||
ff15c27c SE |
786 | /** |
787 | * batadv_sysfs_add_meshif() - Add soft interface specific sysfs entries | |
788 | * @dev: netdev struct of the soft interface | |
789 | * | |
790 | * Return: 0 on success or negative error number in case of failure | |
791 | */ | |
5853e22c | 792 | int batadv_sysfs_add_meshif(struct net_device *dev) |
c6c8fea2 SE |
793 | { |
794 | struct kobject *batif_kobject = &dev->dev.kobj; | |
56303d34 | 795 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 796 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
797 | int err; |
798 | ||
036cbfeb | 799 | bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, |
c6c8fea2 SE |
800 | batif_kobject); |
801 | if (!bat_priv->mesh_obj) { | |
3e34819e | 802 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 803 | BATADV_SYSFS_IF_MESH_SUBDIR); |
c6c8fea2 SE |
804 | goto out; |
805 | } | |
806 | ||
0ff9b86f | 807 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
808 | err = sysfs_create_file(bat_priv->mesh_obj, |
809 | &((*bat_attr)->attr)); | |
810 | if (err) { | |
3e34819e | 811 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 812 | dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, |
3e34819e | 813 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
814 | goto rem_attr; |
815 | } | |
816 | } | |
817 | ||
818 | return 0; | |
819 | ||
820 | rem_attr: | |
0ff9b86f | 821 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
822 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
823 | ||
f4acb108 SE |
824 | kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
825 | kobject_del(bat_priv->mesh_obj); | |
c6c8fea2 SE |
826 | kobject_put(bat_priv->mesh_obj); |
827 | bat_priv->mesh_obj = NULL; | |
828 | out: | |
829 | return -ENOMEM; | |
830 | } | |
831 | ||
ff15c27c SE |
832 | /** |
833 | * batadv_sysfs_del_meshif() - Remove soft interface specific sysfs entries | |
834 | * @dev: netdev struct of the soft interface | |
835 | */ | |
5853e22c | 836 | void batadv_sysfs_del_meshif(struct net_device *dev) |
c6c8fea2 | 837 | { |
56303d34 | 838 | struct batadv_priv *bat_priv = netdev_priv(dev); |
b4d66b87 | 839 | struct batadv_attribute **bat_attr; |
c6c8fea2 | 840 | |
0ff9b86f | 841 | for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
842 | sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
843 | ||
f4acb108 SE |
844 | kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
845 | kobject_del(bat_priv->mesh_obj); | |
c6c8fea2 SE |
846 | kobject_put(bat_priv->mesh_obj); |
847 | bat_priv->mesh_obj = NULL; | |
848 | } | |
849 | ||
90f4435d | 850 | /** |
7e9a8c2c | 851 | * batadv_sysfs_add_vlan() - add all the needed sysfs objects for the new vlan |
90f4435d AQ |
852 | * @dev: netdev of the mesh interface |
853 | * @vlan: private data of the newly added VLAN interface | |
854 | * | |
62fe710f | 855 | * Return: 0 on success and -ENOMEM if any of the structure allocations fails. |
90f4435d AQ |
856 | */ |
857 | int batadv_sysfs_add_vlan(struct net_device *dev, | |
858 | struct batadv_softif_vlan *vlan) | |
859 | { | |
860 | char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5]; | |
861 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
862 | struct batadv_attribute **bat_attr; | |
863 | int err; | |
864 | ||
865 | if (vlan->vid & BATADV_VLAN_HAS_TAG) { | |
866 | sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu", | |
867 | vlan->vid & VLAN_VID_MASK); | |
868 | ||
869 | vlan->kobj = kobject_create_and_add(vlan_subdir, | |
870 | bat_priv->mesh_obj); | |
871 | if (!vlan->kobj) { | |
872 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", | |
873 | dev->name, vlan_subdir); | |
874 | goto out; | |
875 | } | |
876 | } else { | |
877 | /* the untagged LAN uses the root folder to store its "VLAN | |
878 | * specific attributes" | |
879 | */ | |
880 | vlan->kobj = bat_priv->mesh_obj; | |
881 | kobject_get(bat_priv->mesh_obj); | |
882 | } | |
883 | ||
884 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) { | |
885 | err = sysfs_create_file(vlan->kobj, | |
886 | &((*bat_attr)->attr)); | |
887 | if (err) { | |
888 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", | |
889 | dev->name, vlan_subdir, | |
890 | ((*bat_attr)->attr).name); | |
891 | goto rem_attr; | |
892 | } | |
893 | } | |
894 | ||
895 | return 0; | |
896 | ||
897 | rem_attr: | |
898 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
899 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
900 | ||
f4acb108 SE |
901 | if (vlan->kobj != bat_priv->mesh_obj) { |
902 | kobject_uevent(vlan->kobj, KOBJ_REMOVE); | |
903 | kobject_del(vlan->kobj); | |
904 | } | |
90f4435d AQ |
905 | kobject_put(vlan->kobj); |
906 | vlan->kobj = NULL; | |
907 | out: | |
908 | return -ENOMEM; | |
909 | } | |
910 | ||
911 | /** | |
7e9a8c2c | 912 | * batadv_sysfs_del_vlan() - remove all the sysfs objects for a given VLAN |
90f4435d AQ |
913 | * @bat_priv: the bat priv with all the soft interface information |
914 | * @vlan: the private data of the VLAN to destroy | |
915 | */ | |
916 | void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, | |
917 | struct batadv_softif_vlan *vlan) | |
918 | { | |
919 | struct batadv_attribute **bat_attr; | |
920 | ||
921 | for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) | |
922 | sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); | |
923 | ||
f4acb108 SE |
924 | if (vlan->kobj != bat_priv->mesh_obj) { |
925 | kobject_uevent(vlan->kobj, KOBJ_REMOVE); | |
926 | kobject_del(vlan->kobj); | |
927 | } | |
90f4435d AQ |
928 | kobject_put(vlan->kobj); |
929 | vlan->kobj = NULL; | |
930 | } | |
931 | ||
0ff9b86f SE |
932 | static ssize_t batadv_show_mesh_iface(struct kobject *kobj, |
933 | struct attribute *attr, char *buff) | |
c6c8fea2 | 934 | { |
0ff9b86f | 935 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 936 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 | 937 | ssize_t length; |
e9a4f295 | 938 | const char *ifname; |
c6c8fea2 | 939 | |
56303d34 | 940 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 941 | if (!hard_iface) |
c6c8fea2 SE |
942 | return 0; |
943 | ||
e9a4f295 SE |
944 | if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) |
945 | ifname = "none"; | |
946 | else | |
947 | ifname = hard_iface->soft_iface->name; | |
948 | ||
949 | length = sprintf(buff, "%s\n", ifname); | |
c6c8fea2 | 950 | |
82047ad7 | 951 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
952 | |
953 | return length; | |
954 | } | |
955 | ||
77d69d8c | 956 | /** |
7e9a8c2c | 957 | * batadv_store_mesh_iface_finish() - store new hardif mesh_iface state |
77d69d8c SE |
958 | * @net_dev: netdevice to add/remove to/from batman-adv soft-interface |
959 | * @ifname: name of soft-interface to modify | |
960 | * | |
961 | * Changes the parts of the hard+soft interface which can not be modified under | |
962 | * sysfs lock (to prevent deadlock situations). | |
963 | * | |
964 | * Return: 0 on success, 0 < on failure | |
965 | */ | |
966 | static int batadv_store_mesh_iface_finish(struct net_device *net_dev, | |
967 | char ifname[IFNAMSIZ]) | |
c6c8fea2 | 968 | { |
2cd45a06 | 969 | struct net *net = dev_net(net_dev); |
56303d34 | 970 | struct batadv_hard_iface *hard_iface; |
77d69d8c SE |
971 | int status_tmp; |
972 | int ret = 0; | |
973 | ||
974 | ASSERT_RTNL(); | |
c6c8fea2 | 975 | |
56303d34 | 976 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 977 | if (!hard_iface) |
77d69d8c | 978 | return 0; |
c6c8fea2 | 979 | |
77d69d8c | 980 | if (strncmp(ifname, "none", 4) == 0) |
e9a4f295 | 981 | status_tmp = BATADV_IF_NOT_IN_USE; |
c6c8fea2 | 982 | else |
e9a4f295 | 983 | status_tmp = BATADV_IF_I_WANT_YOU; |
c6c8fea2 | 984 | |
e6c10f43 ML |
985 | if (hard_iface->if_status == status_tmp) |
986 | goto out; | |
987 | ||
825ffe1f SE |
988 | if (hard_iface->soft_iface && |
989 | strncmp(hard_iface->soft_iface->name, ifname, IFNAMSIZ) == 0) | |
ed75ccbe | 990 | goto out; |
c6c8fea2 | 991 | |
e9a4f295 | 992 | if (status_tmp == BATADV_IF_NOT_IN_USE) { |
a15fd361 SE |
993 | batadv_hardif_disable_interface(hard_iface, |
994 | BATADV_IF_CLEANUP_AUTO); | |
77d69d8c | 995 | goto out; |
c6c8fea2 SE |
996 | } |
997 | ||
998 | /* if the interface already is in use */ | |
e9a4f295 | 999 | if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) |
a15fd361 SE |
1000 | batadv_hardif_disable_interface(hard_iface, |
1001 | BATADV_IF_CLEANUP_AUTO); | |
c6c8fea2 | 1002 | |
77d69d8c | 1003 | ret = batadv_hardif_enable_interface(hard_iface, net, ifname); |
ed75ccbe | 1004 | out: |
82047ad7 | 1005 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
1006 | return ret; |
1007 | } | |
1008 | ||
77d69d8c | 1009 | /** |
7e9a8c2c | 1010 | * batadv_store_mesh_iface_work() - store new hardif mesh_iface state |
77d69d8c SE |
1011 | * @work: work queue item |
1012 | * | |
1013 | * Changes the parts of the hard+soft interface which can not be modified under | |
1014 | * sysfs lock (to prevent deadlock situations). | |
1015 | */ | |
1016 | static void batadv_store_mesh_iface_work(struct work_struct *work) | |
1017 | { | |
1018 | struct batadv_store_mesh_work *store_work; | |
1019 | int ret; | |
1020 | ||
1021 | store_work = container_of(work, struct batadv_store_mesh_work, work); | |
1022 | ||
1023 | rtnl_lock(); | |
1024 | ret = batadv_store_mesh_iface_finish(store_work->net_dev, | |
1025 | store_work->soft_iface_name); | |
1026 | rtnl_unlock(); | |
1027 | ||
1028 | if (ret < 0) | |
1029 | pr_err("Failed to store new mesh_iface state %s for %s: %d\n", | |
1030 | store_work->soft_iface_name, store_work->net_dev->name, | |
1031 | ret); | |
1032 | ||
1033 | dev_put(store_work->net_dev); | |
1034 | kfree(store_work); | |
1035 | } | |
1036 | ||
1037 | static ssize_t batadv_store_mesh_iface(struct kobject *kobj, | |
1038 | struct attribute *attr, char *buff, | |
1039 | size_t count) | |
1040 | { | |
1041 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1042 | struct batadv_store_mesh_work *store_work; | |
1043 | ||
1044 | if (buff[count - 1] == '\n') | |
1045 | buff[count - 1] = '\0'; | |
1046 | ||
1047 | if (strlen(buff) >= IFNAMSIZ) { | |
1048 | pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", | |
1049 | buff); | |
1050 | return -EINVAL; | |
1051 | } | |
1052 | ||
1053 | store_work = kmalloc(sizeof(*store_work), GFP_KERNEL); | |
1054 | if (!store_work) | |
1055 | return -ENOMEM; | |
1056 | ||
1057 | dev_hold(net_dev); | |
1058 | INIT_WORK(&store_work->work, batadv_store_mesh_iface_work); | |
1059 | store_work->net_dev = net_dev; | |
1060 | strlcpy(store_work->soft_iface_name, buff, | |
1061 | sizeof(store_work->soft_iface_name)); | |
1062 | ||
1063 | queue_work(batadv_event_workqueue, &store_work->work); | |
1064 | ||
1065 | return count; | |
1066 | } | |
1067 | ||
0ff9b86f SE |
1068 | static ssize_t batadv_show_iface_status(struct kobject *kobj, |
1069 | struct attribute *attr, char *buff) | |
c6c8fea2 | 1070 | { |
0ff9b86f | 1071 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
56303d34 | 1072 | struct batadv_hard_iface *hard_iface; |
c6c8fea2 SE |
1073 | ssize_t length; |
1074 | ||
56303d34 | 1075 | hard_iface = batadv_hardif_get_by_netdev(net_dev); |
e6c10f43 | 1076 | if (!hard_iface) |
c6c8fea2 SE |
1077 | return 0; |
1078 | ||
e6c10f43 | 1079 | switch (hard_iface->if_status) { |
e9a4f295 | 1080 | case BATADV_IF_TO_BE_REMOVED: |
c6c8fea2 SE |
1081 | length = sprintf(buff, "disabling\n"); |
1082 | break; | |
e9a4f295 | 1083 | case BATADV_IF_INACTIVE: |
c6c8fea2 SE |
1084 | length = sprintf(buff, "inactive\n"); |
1085 | break; | |
e9a4f295 | 1086 | case BATADV_IF_ACTIVE: |
c6c8fea2 SE |
1087 | length = sprintf(buff, "active\n"); |
1088 | break; | |
e9a4f295 | 1089 | case BATADV_IF_TO_BE_ACTIVATED: |
c6c8fea2 SE |
1090 | length = sprintf(buff, "enabling\n"); |
1091 | break; | |
e9a4f295 | 1092 | case BATADV_IF_NOT_IN_USE: |
c6c8fea2 SE |
1093 | default: |
1094 | length = sprintf(buff, "not in use\n"); | |
1095 | break; | |
1096 | } | |
1097 | ||
82047ad7 | 1098 | batadv_hardif_put(hard_iface); |
c6c8fea2 SE |
1099 | |
1100 | return length; | |
1101 | } | |
1102 | ||
0b5ecc68 AQ |
1103 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
1104 | ||
1105 | /** | |
7e9a8c2c | 1106 | * batadv_store_throughput_override() - parse and store throughput override |
0b5ecc68 AQ |
1107 | * entered by the user |
1108 | * @kobj: kobject representing the private mesh sysfs directory | |
1109 | * @attr: the batman-adv attribute the user is interacting with | |
1110 | * @buff: the buffer containing the user data | |
1111 | * @count: number of bytes in the buffer | |
1112 | * | |
1113 | * Return: 'count' on success or a negative error code in case of failure | |
1114 | */ | |
1115 | static ssize_t batadv_store_throughput_override(struct kobject *kobj, | |
1116 | struct attribute *attr, | |
1117 | char *buff, size_t count) | |
1118 | { | |
7e6f461e | 1119 | struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
0b5ecc68 AQ |
1120 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
1121 | struct batadv_hard_iface *hard_iface; | |
1122 | u32 tp_override; | |
1123 | u32 old_tp_override; | |
1124 | bool ret; | |
1125 | ||
1126 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1127 | if (!hard_iface) | |
1128 | return -EINVAL; | |
1129 | ||
1130 | if (buff[count - 1] == '\n') | |
1131 | buff[count - 1] = '\0'; | |
1132 | ||
1133 | ret = batadv_parse_throughput(net_dev, buff, "throughput_override", | |
1134 | &tp_override); | |
1135 | if (!ret) | |
1136 | return count; | |
1137 | ||
1138 | old_tp_override = atomic_read(&hard_iface->bat_v.throughput_override); | |
1139 | if (old_tp_override == tp_override) | |
1140 | goto out; | |
1141 | ||
b9fd14c2 SE |
1142 | batadv_info(hard_iface->soft_iface, |
1143 | "%s: %s: Changing from: %u.%u MBit to: %u.%u MBit\n", | |
1144 | "throughput_override", net_dev->name, | |
0b5ecc68 AQ |
1145 | old_tp_override / 10, old_tp_override % 10, |
1146 | tp_override / 10, tp_override % 10); | |
1147 | ||
1148 | atomic_set(&hard_iface->bat_v.throughput_override, tp_override); | |
1149 | ||
7e6f461e SE |
1150 | batadv_netlink_notify_hardif(bat_priv, hard_iface); |
1151 | ||
0b5ecc68 AQ |
1152 | out: |
1153 | batadv_hardif_put(hard_iface); | |
1154 | return count; | |
1155 | } | |
1156 | ||
1157 | static ssize_t batadv_show_throughput_override(struct kobject *kobj, | |
1158 | struct attribute *attr, | |
1159 | char *buff) | |
1160 | { | |
1161 | struct net_device *net_dev = batadv_kobj_to_netdev(kobj); | |
1162 | struct batadv_hard_iface *hard_iface; | |
1163 | u32 tp_override; | |
1164 | ||
1165 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1166 | if (!hard_iface) | |
1167 | return -EINVAL; | |
1168 | ||
1169 | tp_override = atomic_read(&hard_iface->bat_v.throughput_override); | |
1170 | ||
1171 | return sprintf(buff, "%u.%u MBit\n", tp_override / 10, | |
1172 | tp_override % 10); | |
1173 | } | |
1174 | ||
1175 | #endif | |
1176 | ||
507b37cf | 1177 | static BATADV_ATTR(mesh_iface, 0644, batadv_show_mesh_iface, |
347c80f0 | 1178 | batadv_store_mesh_iface); |
507b37cf | 1179 | static BATADV_ATTR(iface_status, 0444, batadv_show_iface_status, NULL); |
7f136cd4 | 1180 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
507b37cf | 1181 | BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, 0644, |
7f136cd4 | 1182 | 2 * BATADV_JITTER, INT_MAX, NULL); |
507b37cf | 1183 | static BATADV_ATTR(throughput_override, 0644, batadv_show_throughput_override, |
0b5ecc68 | 1184 | batadv_store_throughput_override); |
7f136cd4 | 1185 | #endif |
c6c8fea2 | 1186 | |
b4d66b87 | 1187 | static struct batadv_attribute *batadv_batman_attrs[] = { |
0ff9b86f SE |
1188 | &batadv_attr_mesh_iface, |
1189 | &batadv_attr_iface_status, | |
7f136cd4 LL |
1190 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
1191 | &batadv_attr_elp_interval, | |
0b5ecc68 | 1192 | &batadv_attr_throughput_override, |
7f136cd4 | 1193 | #endif |
c6c8fea2 SE |
1194 | NULL, |
1195 | }; | |
1196 | ||
ff15c27c SE |
1197 | /** |
1198 | * batadv_sysfs_add_hardif() - Add hard interface specific sysfs entries | |
1199 | * @hardif_obj: address where to store the pointer to new sysfs folder | |
1200 | * @dev: netdev struct of the hard interface | |
1201 | * | |
1202 | * Return: 0 on success or negative error number in case of failure | |
1203 | */ | |
5853e22c | 1204 | int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) |
c6c8fea2 SE |
1205 | { |
1206 | struct kobject *hardif_kobject = &dev->dev.kobj; | |
b4d66b87 | 1207 | struct batadv_attribute **bat_attr; |
c6c8fea2 SE |
1208 | int err; |
1209 | ||
036cbfeb SE |
1210 | *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, |
1211 | hardif_kobject); | |
c6c8fea2 SE |
1212 | |
1213 | if (!*hardif_obj) { | |
3e34819e | 1214 | batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
036cbfeb | 1215 | BATADV_SYSFS_IF_BAT_SUBDIR); |
c6c8fea2 SE |
1216 | goto out; |
1217 | } | |
1218 | ||
0ff9b86f | 1219 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { |
c6c8fea2 SE |
1220 | err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); |
1221 | if (err) { | |
3e34819e | 1222 | batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
036cbfeb | 1223 | dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, |
3e34819e | 1224 | ((*bat_attr)->attr).name); |
c6c8fea2 SE |
1225 | goto rem_attr; |
1226 | } | |
1227 | } | |
1228 | ||
1229 | return 0; | |
1230 | ||
1231 | rem_attr: | |
0ff9b86f | 1232 | for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) |
c6c8fea2 SE |
1233 | sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); |
1234 | out: | |
1235 | return -ENOMEM; | |
1236 | } | |
1237 | ||
ff15c27c SE |
1238 | /** |
1239 | * batadv_sysfs_del_hardif() - Remove hard interface specific sysfs entries | |
1240 | * @hardif_obj: address to the pointer to which stores batman-adv sysfs folder | |
1241 | * of the hard interface | |
1242 | */ | |
5853e22c | 1243 | void batadv_sysfs_del_hardif(struct kobject **hardif_obj) |
c6c8fea2 | 1244 | { |
f4acb108 SE |
1245 | kobject_uevent(*hardif_obj, KOBJ_REMOVE); |
1246 | kobject_del(*hardif_obj); | |
c6c8fea2 SE |
1247 | kobject_put(*hardif_obj); |
1248 | *hardif_obj = NULL; | |
1249 | } | |
c6bda689 | 1250 | |
ff15c27c SE |
1251 | /** |
1252 | * batadv_throw_uevent() - Send an uevent with batman-adv specific env data | |
1253 | * @bat_priv: the bat priv with all the soft interface information | |
1254 | * @type: subsystem type of event. Stored in uevent's BATTYPE | |
1255 | * @action: action type of event. Stored in uevent's BATACTION | |
1256 | * @data: string with additional information to the event (ignored for | |
1257 | * BATADV_UEV_DEL). Stored in uevent's BATDATA | |
1258 | * | |
1259 | * Return: 0 on success or negative error number in case of failure | |
1260 | */ | |
56303d34 | 1261 | int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, |
39c75a51 | 1262 | enum batadv_uev_action action, const char *data) |
c6bda689 | 1263 | { |
5346c35e | 1264 | int ret = -ENOMEM; |
c6bda689 AQ |
1265 | struct kobject *bat_kobj; |
1266 | char *uevent_env[4] = { NULL, NULL, NULL, NULL }; | |
1267 | ||
736292c2 | 1268 | bat_kobj = &bat_priv->soft_iface->dev.kobj; |
c6bda689 | 1269 | |
b98fe24c HS |
1270 | uevent_env[0] = kasprintf(GFP_ATOMIC, |
1271 | "%s%s", BATADV_UEV_TYPE_VAR, | |
1272 | batadv_uev_type_str[type]); | |
c6bda689 AQ |
1273 | if (!uevent_env[0]) |
1274 | goto out; | |
1275 | ||
b98fe24c HS |
1276 | uevent_env[1] = kasprintf(GFP_ATOMIC, |
1277 | "%s%s", BATADV_UEV_ACTION_VAR, | |
1278 | batadv_uev_action_str[action]); | |
c6bda689 AQ |
1279 | if (!uevent_env[1]) |
1280 | goto out; | |
1281 | ||
c6bda689 | 1282 | /* If the event is DEL, ignore the data field */ |
39c75a51 | 1283 | if (action != BATADV_UEV_DEL) { |
b98fe24c HS |
1284 | uevent_env[2] = kasprintf(GFP_ATOMIC, |
1285 | "%s%s", BATADV_UEV_DATA_VAR, data); | |
c6bda689 AQ |
1286 | if (!uevent_env[2]) |
1287 | goto out; | |
c6bda689 AQ |
1288 | } |
1289 | ||
1290 | ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env); | |
1291 | out: | |
1292 | kfree(uevent_env[0]); | |
1293 | kfree(uevent_env[1]); | |
1294 | kfree(uevent_env[2]); | |
1295 | ||
c6bda689 | 1296 | if (ret) |
39c75a51 | 1297 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf | 1298 | "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n", |
0ff9b86f SE |
1299 | batadv_uev_type_str[type], |
1300 | batadv_uev_action_str[action], | |
39c75a51 | 1301 | (action == BATADV_UEV_DEL ? "NULL" : data), ret); |
c6bda689 AQ |
1302 | return ret; |
1303 | } |