GNU Linux-libre 4.19.211-gnu1
[releases.git] / net / mac802154 / cfg.c
1 /* This program is free software; you can redistribute it and/or modify
2  * it under the terms of the GNU General Public License version 2
3  * as published by the Free Software Foundation.
4  *
5  * This program is distributed in the hope that it will be useful,
6  * but WITHOUT ANY WARRANTY; without even the implied warranty of
7  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
8  * GNU General Public License for more details.
9  *
10  * Authors:
11  * Alexander Aring <aar@pengutronix.de>
12  *
13  * Based on: net/mac80211/cfg.c
14  */
15
16 #include <net/rtnetlink.h>
17 #include <net/cfg802154.h>
18
19 #include "ieee802154_i.h"
20 #include "driver-ops.h"
21 #include "cfg.h"
22
23 static struct net_device *
24 ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
25                                 const char *name,
26                                 unsigned char name_assign_type, int type)
27 {
28         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
29         struct net_device *dev;
30
31         rtnl_lock();
32         dev = ieee802154_if_add(local, name, name_assign_type, type,
33                                 cpu_to_le64(0x0000000000000000ULL));
34         rtnl_unlock();
35
36         return dev;
37 }
38
39 static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
40                                             struct net_device *dev)
41 {
42         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
43
44         ieee802154_if_remove(sdata);
45 }
46
47 #ifdef CONFIG_PM
48 static int ieee802154_suspend(struct wpan_phy *wpan_phy)
49 {
50         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
51
52         if (!local->open_count)
53                 goto suspend;
54
55         ieee802154_stop_queue(&local->hw);
56         synchronize_net();
57
58         /* stop hardware - this must stop RX */
59         ieee802154_stop_device(local);
60
61 suspend:
62         local->suspended = true;
63         return 0;
64 }
65
66 static int ieee802154_resume(struct wpan_phy *wpan_phy)
67 {
68         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
69         int ret;
70
71         /* nothing to do if HW shouldn't run */
72         if (!local->open_count)
73                 goto wake_up;
74
75         /* restart hardware */
76         ret = drv_start(local);
77         if (ret)
78                 return ret;
79
80 wake_up:
81         ieee802154_wake_queue(&local->hw);
82         local->suspended = false;
83         return 0;
84 }
85 #else
86 #define ieee802154_suspend NULL
87 #define ieee802154_resume NULL
88 #endif
89
90 static int
91 ieee802154_add_iface(struct wpan_phy *phy, const char *name,
92                      unsigned char name_assign_type,
93                      enum nl802154_iftype type, __le64 extended_addr)
94 {
95         struct ieee802154_local *local = wpan_phy_priv(phy);
96         struct net_device *err;
97
98         err = ieee802154_if_add(local, name, name_assign_type, type,
99                                 extended_addr);
100         return PTR_ERR_OR_ZERO(err);
101 }
102
103 static int
104 ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
105 {
106         ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev));
107
108         return 0;
109 }
110
111 static int
112 ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
113 {
114         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
115         int ret;
116
117         ASSERT_RTNL();
118
119         if (wpan_phy->current_page == page &&
120             wpan_phy->current_channel == channel)
121                 return 0;
122
123         ret = drv_set_channel(local, page, channel);
124         if (!ret) {
125                 wpan_phy->current_page = page;
126                 wpan_phy->current_channel = channel;
127         }
128
129         return ret;
130 }
131
132 static int
133 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
134                         const struct wpan_phy_cca *cca)
135 {
136         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
137         int ret;
138
139         ASSERT_RTNL();
140
141         if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))
142                 return 0;
143
144         ret = drv_set_cca_mode(local, cca);
145         if (!ret)
146                 wpan_phy->cca = *cca;
147
148         return ret;
149 }
150
151 static int
152 ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
153 {
154         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
155         int ret;
156
157         ASSERT_RTNL();
158
159         if (wpan_phy->cca_ed_level == ed_level)
160                 return 0;
161
162         ret = drv_set_cca_ed_level(local, ed_level);
163         if (!ret)
164                 wpan_phy->cca_ed_level = ed_level;
165
166         return ret;
167 }
168
169 static int
170 ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
171 {
172         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
173         int ret;
174
175         ASSERT_RTNL();
176
177         if (wpan_phy->transmit_power == power)
178                 return 0;
179
180         ret = drv_set_tx_power(local, power);
181         if (!ret)
182                 wpan_phy->transmit_power = power;
183
184         return ret;
185 }
186
187 static int
188 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
189                       __le16 pan_id)
190 {
191         int ret;
192
193         ASSERT_RTNL();
194
195         if (wpan_dev->pan_id == pan_id)
196                 return 0;
197
198         ret = mac802154_wpan_update_llsec(wpan_dev->netdev);
199         if (!ret)
200                 wpan_dev->pan_id = pan_id;
201
202         return ret;
203 }
204
205 static int
206 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
207                                 struct wpan_dev *wpan_dev,
208                                 u8 min_be, u8 max_be)
209 {
210         ASSERT_RTNL();
211
212         wpan_dev->min_be = min_be;
213         wpan_dev->max_be = max_be;
214         return 0;
215 }
216
217 static int
218 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
219                           __le16 short_addr)
220 {
221         ASSERT_RTNL();
222
223         wpan_dev->short_addr = short_addr;
224         return 0;
225 }
226
227 static int
228 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
229                                  struct wpan_dev *wpan_dev,
230                                  u8 max_csma_backoffs)
231 {
232         ASSERT_RTNL();
233
234         wpan_dev->csma_retries = max_csma_backoffs;
235         return 0;
236 }
237
238 static int
239 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
240                                  struct wpan_dev *wpan_dev,
241                                  s8 max_frame_retries)
242 {
243         ASSERT_RTNL();
244
245         wpan_dev->frame_retries = max_frame_retries;
246         return 0;
247 }
248
249 static int
250 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
251                         bool mode)
252 {
253         ASSERT_RTNL();
254
255         wpan_dev->lbt = mode;
256         return 0;
257 }
258
259 static int
260 ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
261                               struct wpan_dev *wpan_dev, bool ackreq)
262 {
263         ASSERT_RTNL();
264
265         wpan_dev->ackreq = ackreq;
266         return 0;
267 }
268
269 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
270 static void
271 ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
272                            struct wpan_dev *wpan_dev,
273                            struct ieee802154_llsec_table **table)
274 {
275         struct net_device *dev = wpan_dev->netdev;
276         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
277
278         *table = &sdata->sec.table;
279 }
280
281 static void
282 ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
283                             struct wpan_dev *wpan_dev)
284 {
285         struct net_device *dev = wpan_dev->netdev;
286         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
287
288         mutex_lock(&sdata->sec_mtx);
289 }
290
291 static void
292 ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
293                               struct wpan_dev *wpan_dev)
294 {
295         struct net_device *dev = wpan_dev->netdev;
296         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
297
298         mutex_unlock(&sdata->sec_mtx);
299 }
300
301 static int
302 ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
303                             struct wpan_dev *wpan_dev,
304                             const struct ieee802154_llsec_params *params,
305                             int changed)
306 {
307         struct net_device *dev = wpan_dev->netdev;
308         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
309         int res;
310
311         mutex_lock(&sdata->sec_mtx);
312         res = mac802154_llsec_set_params(&sdata->sec, params, changed);
313         mutex_unlock(&sdata->sec_mtx);
314
315         return res;
316 }
317
318 static int
319 ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
320                             struct wpan_dev *wpan_dev,
321                             struct ieee802154_llsec_params *params)
322 {
323         struct net_device *dev = wpan_dev->netdev;
324         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
325         int res;
326
327         mutex_lock(&sdata->sec_mtx);
328         res = mac802154_llsec_get_params(&sdata->sec, params);
329         mutex_unlock(&sdata->sec_mtx);
330
331         return res;
332 }
333
334 static int
335 ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
336                          const struct ieee802154_llsec_key_id *id,
337                          const struct ieee802154_llsec_key *key)
338 {
339         struct net_device *dev = wpan_dev->netdev;
340         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
341         int res;
342
343         mutex_lock(&sdata->sec_mtx);
344         res = mac802154_llsec_key_add(&sdata->sec, id, key);
345         mutex_unlock(&sdata->sec_mtx);
346
347         return res;
348 }
349
350 static int
351 ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
352                          const struct ieee802154_llsec_key_id *id)
353 {
354         struct net_device *dev = wpan_dev->netdev;
355         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
356         int res;
357
358         mutex_lock(&sdata->sec_mtx);
359         res = mac802154_llsec_key_del(&sdata->sec, id);
360         mutex_unlock(&sdata->sec_mtx);
361
362         return res;
363 }
364
365 static int
366 ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
367                         const struct ieee802154_llsec_seclevel *sl)
368 {
369         struct net_device *dev = wpan_dev->netdev;
370         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
371         int res;
372
373         mutex_lock(&sdata->sec_mtx);
374         res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
375         mutex_unlock(&sdata->sec_mtx);
376
377         return res;
378 }
379
380 static int
381 ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
382                         const struct ieee802154_llsec_seclevel *sl)
383 {
384         struct net_device *dev = wpan_dev->netdev;
385         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
386         int res;
387
388         mutex_lock(&sdata->sec_mtx);
389         res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
390         mutex_unlock(&sdata->sec_mtx);
391
392         return res;
393 }
394
395 static int
396 ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
397                       const struct ieee802154_llsec_device *dev_desc)
398 {
399         struct net_device *dev = wpan_dev->netdev;
400         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
401         int res;
402
403         mutex_lock(&sdata->sec_mtx);
404         res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
405         mutex_unlock(&sdata->sec_mtx);
406
407         return res;
408 }
409
410 static int
411 ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
412                       __le64 extended_addr)
413 {
414         struct net_device *dev = wpan_dev->netdev;
415         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
416         int res;
417
418         mutex_lock(&sdata->sec_mtx);
419         res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
420         mutex_unlock(&sdata->sec_mtx);
421
422         return res;
423 }
424
425 static int
426 ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
427                       __le64 extended_addr,
428                       const struct ieee802154_llsec_device_key *key)
429 {
430         struct net_device *dev = wpan_dev->netdev;
431         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
432         int res;
433
434         mutex_lock(&sdata->sec_mtx);
435         res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
436         mutex_unlock(&sdata->sec_mtx);
437
438         return res;
439 }
440
441 static int
442 ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
443                       __le64 extended_addr,
444                       const struct ieee802154_llsec_device_key *key)
445 {
446         struct net_device *dev = wpan_dev->netdev;
447         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
448         int res;
449
450         mutex_lock(&sdata->sec_mtx);
451         res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
452         mutex_unlock(&sdata->sec_mtx);
453
454         return res;
455 }
456 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
457
458 const struct cfg802154_ops mac802154_config_ops = {
459         .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
460         .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
461         .suspend = ieee802154_suspend,
462         .resume = ieee802154_resume,
463         .add_virtual_intf = ieee802154_add_iface,
464         .del_virtual_intf = ieee802154_del_iface,
465         .set_channel = ieee802154_set_channel,
466         .set_cca_mode = ieee802154_set_cca_mode,
467         .set_cca_ed_level = ieee802154_set_cca_ed_level,
468         .set_tx_power = ieee802154_set_tx_power,
469         .set_pan_id = ieee802154_set_pan_id,
470         .set_short_addr = ieee802154_set_short_addr,
471         .set_backoff_exponent = ieee802154_set_backoff_exponent,
472         .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
473         .set_max_frame_retries = ieee802154_set_max_frame_retries,
474         .set_lbt_mode = ieee802154_set_lbt_mode,
475         .set_ackreq_default = ieee802154_set_ackreq_default,
476 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
477         .get_llsec_table = ieee802154_get_llsec_table,
478         .lock_llsec_table = ieee802154_lock_llsec_table,
479         .unlock_llsec_table = ieee802154_unlock_llsec_table,
480         /* TODO above */
481         .set_llsec_params = ieee802154_set_llsec_params,
482         .get_llsec_params = ieee802154_get_llsec_params,
483         .add_llsec_key = ieee802154_add_llsec_key,
484         .del_llsec_key = ieee802154_del_llsec_key,
485         .add_seclevel = ieee802154_add_seclevel,
486         .del_seclevel = ieee802154_del_seclevel,
487         .add_device = ieee802154_add_device,
488         .del_device = ieee802154_del_device,
489         .add_devkey = ieee802154_add_devkey,
490         .del_devkey = ieee802154_del_devkey,
491 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
492 };