1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *
4 * Authors:
5 * Alexander Aring <aar@pengutronix.de>
6 *
7 * Based on: net/mac80211/cfg.c
8 */
9
10#include <net/rtnetlink.h>
11#include <net/cfg802154.h>
12
13#include "ieee802154_i.h"
14#include "driver-ops.h"
15#include "cfg.h"
16
17static struct net_device *
18ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
19 const char *name,
20 unsigned char name_assign_type, int type)
21{
22 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
23 struct net_device *dev;
24
25 rtnl_lock();
26 dev = ieee802154_if_add(local, name, name_assign_type, type,
27 cpu_to_le64(0x0000000000000000ULL));
28 rtnl_unlock();
29
30 return dev;
31}
32
33static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
34 struct net_device *dev)
35{
36 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
37
38 ieee802154_if_remove(sdata);
39}
40
41#ifdef CONFIG_PM
42static int ieee802154_suspend(struct wpan_phy *wpan_phy)
43{
44 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
45
46 if (!local->open_count)
47 goto suspend;
48
49 ieee802154_sync_and_hold_queue(local);
50 synchronize_net();
51
52 /* stop hardware - this must stop RX */
53 ieee802154_stop_device(local);
54
55suspend:
56 local->suspended = true;
57 return 0;
58}
59
60static int ieee802154_resume(struct wpan_phy *wpan_phy)
61{
62 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
63 int ret;
64
65 /* nothing to do if HW shouldn't run */
66 if (!local->open_count)
67 goto wake_up;
68
69 /* restart hardware */
70 ret = drv_start(local, level: local->phy->filtering, addr_filt: &local->addr_filt);
71 if (ret)
72 return ret;
73
74wake_up:
75 ieee802154_release_queue(local);
76 local->suspended = false;
77 return 0;
78}
79#else
80#define ieee802154_suspend NULL
81#define ieee802154_resume NULL
82#endif
83
84static int
85ieee802154_add_iface(struct wpan_phy *phy, const char *name,
86 unsigned char name_assign_type,
87 enum nl802154_iftype type, __le64 extended_addr)
88{
89 struct ieee802154_local *local = wpan_phy_priv(phy);
90 struct net_device *err;
91
92 err = ieee802154_if_add(local, name, name_assign_type, type,
93 extended_addr);
94 return PTR_ERR_OR_ZERO(ptr: err);
95}
96
97static int
98ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
99{
100 ieee802154_if_remove(sdata: IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev));
101
102 return 0;
103}
104
105static int
106ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
107{
108 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
109 int ret;
110
111 ASSERT_RTNL();
112
113 if (wpan_phy->current_page == page &&
114 wpan_phy->current_channel == channel)
115 return 0;
116
117 /* Refuse to change channels during scanning or beaconing */
118 if (mac802154_is_scanning(local) || mac802154_is_beaconing(local))
119 return -EBUSY;
120
121 ret = drv_set_channel(local, page, channel);
122 if (!ret) {
123 wpan_phy->current_page = page;
124 wpan_phy->current_channel = channel;
125 ieee802154_configure_durations(phy: wpan_phy, page, channel);
126 }
127
128 return ret;
129}
130
131static int
132ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
133 const struct wpan_phy_cca *cca)
134{
135 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
136 int ret;
137
138 ASSERT_RTNL();
139
140 if (wpan_phy_cca_cmp(a: &wpan_phy->cca, b: cca))
141 return 0;
142
143 ret = drv_set_cca_mode(local, cca);
144 if (!ret)
145 wpan_phy->cca = *cca;
146
147 return ret;
148}
149
150static int
151ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
152{
153 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
154 int ret;
155
156 ASSERT_RTNL();
157
158 if (wpan_phy->cca_ed_level == ed_level)
159 return 0;
160
161 ret = drv_set_cca_ed_level(local, mbm: ed_level);
162 if (!ret)
163 wpan_phy->cca_ed_level = ed_level;
164
165 return ret;
166}
167
168static int
169ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
170{
171 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
172 int ret;
173
174 ASSERT_RTNL();
175
176 if (wpan_phy->transmit_power == power)
177 return 0;
178
179 ret = drv_set_tx_power(local, mbm: power);
180 if (!ret)
181 wpan_phy->transmit_power = power;
182
183 return ret;
184}
185
186static int
187ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
188 __le16 pan_id)
189{
190 int ret;
191
192 ASSERT_RTNL();
193
194 if (wpan_dev->pan_id == pan_id)
195 return 0;
196
197 ret = mac802154_wpan_update_llsec(dev: wpan_dev->netdev);
198 if (!ret)
199 wpan_dev->pan_id = pan_id;
200
201 return ret;
202}
203
204static int
205ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
206 struct wpan_dev *wpan_dev,
207 u8 min_be, u8 max_be)
208{
209 ASSERT_RTNL();
210
211 wpan_dev->min_be = min_be;
212 wpan_dev->max_be = max_be;
213 return 0;
214}
215
216static int
217ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
218 __le16 short_addr)
219{
220 ASSERT_RTNL();
221
222 wpan_dev->short_addr = short_addr;
223 return 0;
224}
225
226static int
227ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
228 struct wpan_dev *wpan_dev,
229 u8 max_csma_backoffs)
230{
231 ASSERT_RTNL();
232
233 wpan_dev->csma_retries = max_csma_backoffs;
234 return 0;
235}
236
237static int
238ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
239 struct wpan_dev *wpan_dev,
240 s8 max_frame_retries)
241{
242 ASSERT_RTNL();
243
244 wpan_dev->frame_retries = max_frame_retries;
245 return 0;
246}
247
248static int
249ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
250 bool mode)
251{
252 ASSERT_RTNL();
253
254 wpan_dev->lbt = mode;
255 return 0;
256}
257
258static int
259ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
260 struct wpan_dev *wpan_dev, bool ackreq)
261{
262 ASSERT_RTNL();
263
264 wpan_dev->ackreq = ackreq;
265 return 0;
266}
267
268static int mac802154_trigger_scan(struct wpan_phy *wpan_phy,
269 struct cfg802154_scan_request *request)
270{
271 struct ieee802154_sub_if_data *sdata;
272
273 sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev: request->wpan_dev);
274
275 ASSERT_RTNL();
276
277 return mac802154_trigger_scan_locked(sdata, request);
278}
279
280static int mac802154_abort_scan(struct wpan_phy *wpan_phy,
281 struct wpan_dev *wpan_dev)
282{
283 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
284 struct ieee802154_sub_if_data *sdata;
285
286 sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev);
287
288 ASSERT_RTNL();
289
290 return mac802154_abort_scan_locked(local, sdata);
291}
292
293static int mac802154_send_beacons(struct wpan_phy *wpan_phy,
294 struct cfg802154_beacon_request *request)
295{
296 struct ieee802154_sub_if_data *sdata;
297
298 sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev: request->wpan_dev);
299
300 ASSERT_RTNL();
301
302 return mac802154_send_beacons_locked(sdata, request);
303}
304
305static int mac802154_stop_beacons(struct wpan_phy *wpan_phy,
306 struct wpan_dev *wpan_dev)
307{
308 struct ieee802154_local *local = wpan_phy_priv(phy: wpan_phy);
309 struct ieee802154_sub_if_data *sdata;
310
311 sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev);
312
313 ASSERT_RTNL();
314
315 return mac802154_stop_beacons_locked(local, sdata);
316}
317
318#ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
319static void
320ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
321 struct wpan_dev *wpan_dev,
322 struct ieee802154_llsec_table **table)
323{
324 struct net_device *dev = wpan_dev->netdev;
325 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
326
327 *table = &sdata->sec.table;
328}
329
330static void
331ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
332 struct wpan_dev *wpan_dev)
333{
334 struct net_device *dev = wpan_dev->netdev;
335 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
336
337 mutex_lock(&sdata->sec_mtx);
338}
339
340static void
341ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
342 struct wpan_dev *wpan_dev)
343{
344 struct net_device *dev = wpan_dev->netdev;
345 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
346
347 mutex_unlock(lock: &sdata->sec_mtx);
348}
349
350static int
351ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
352 struct wpan_dev *wpan_dev,
353 const struct ieee802154_llsec_params *params,
354 int changed)
355{
356 struct net_device *dev = wpan_dev->netdev;
357 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
358 int res;
359
360 mutex_lock(&sdata->sec_mtx);
361 res = mac802154_llsec_set_params(sec: &sdata->sec, params, changed);
362 mutex_unlock(lock: &sdata->sec_mtx);
363
364 return res;
365}
366
367static int
368ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
369 struct wpan_dev *wpan_dev,
370 struct ieee802154_llsec_params *params)
371{
372 struct net_device *dev = wpan_dev->netdev;
373 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
374 int res;
375
376 mutex_lock(&sdata->sec_mtx);
377 res = mac802154_llsec_get_params(sec: &sdata->sec, params);
378 mutex_unlock(lock: &sdata->sec_mtx);
379
380 return res;
381}
382
383static int
384ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
385 const struct ieee802154_llsec_key_id *id,
386 const struct ieee802154_llsec_key *key)
387{
388 struct net_device *dev = wpan_dev->netdev;
389 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
390 int res;
391
392 mutex_lock(&sdata->sec_mtx);
393 res = mac802154_llsec_key_add(sec: &sdata->sec, id, key);
394 mutex_unlock(lock: &sdata->sec_mtx);
395
396 return res;
397}
398
399static int
400ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
401 const struct ieee802154_llsec_key_id *id)
402{
403 struct net_device *dev = wpan_dev->netdev;
404 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
405 int res;
406
407 mutex_lock(&sdata->sec_mtx);
408 res = mac802154_llsec_key_del(sec: &sdata->sec, key: id);
409 mutex_unlock(lock: &sdata->sec_mtx);
410
411 return res;
412}
413
414static int
415ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
416 const struct ieee802154_llsec_seclevel *sl)
417{
418 struct net_device *dev = wpan_dev->netdev;
419 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
420 int res;
421
422 mutex_lock(&sdata->sec_mtx);
423 res = mac802154_llsec_seclevel_add(sec: &sdata->sec, sl);
424 mutex_unlock(lock: &sdata->sec_mtx);
425
426 return res;
427}
428
429static int
430ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
431 const struct ieee802154_llsec_seclevel *sl)
432{
433 struct net_device *dev = wpan_dev->netdev;
434 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
435 int res;
436
437 mutex_lock(&sdata->sec_mtx);
438 res = mac802154_llsec_seclevel_del(sec: &sdata->sec, sl);
439 mutex_unlock(lock: &sdata->sec_mtx);
440
441 return res;
442}
443
444static int
445ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
446 const struct ieee802154_llsec_device *dev_desc)
447{
448 struct net_device *dev = wpan_dev->netdev;
449 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
450 int res;
451
452 mutex_lock(&sdata->sec_mtx);
453 res = mac802154_llsec_dev_add(sec: &sdata->sec, dev: dev_desc);
454 mutex_unlock(lock: &sdata->sec_mtx);
455
456 return res;
457}
458
459static int
460ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
461 __le64 extended_addr)
462{
463 struct net_device *dev = wpan_dev->netdev;
464 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
465 int res;
466
467 mutex_lock(&sdata->sec_mtx);
468 res = mac802154_llsec_dev_del(sec: &sdata->sec, device_addr: extended_addr);
469 mutex_unlock(lock: &sdata->sec_mtx);
470
471 return res;
472}
473
474static int
475ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
476 __le64 extended_addr,
477 const struct ieee802154_llsec_device_key *key)
478{
479 struct net_device *dev = wpan_dev->netdev;
480 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
481 int res;
482
483 mutex_lock(&sdata->sec_mtx);
484 res = mac802154_llsec_devkey_add(sec: &sdata->sec, dev_addr: extended_addr, key);
485 mutex_unlock(lock: &sdata->sec_mtx);
486
487 return res;
488}
489
490static int
491ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
492 __le64 extended_addr,
493 const struct ieee802154_llsec_device_key *key)
494{
495 struct net_device *dev = wpan_dev->netdev;
496 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
497 int res;
498
499 mutex_lock(&sdata->sec_mtx);
500 res = mac802154_llsec_devkey_del(sec: &sdata->sec, dev_addr: extended_addr, key);
501 mutex_unlock(lock: &sdata->sec_mtx);
502
503 return res;
504}
505#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
506
507const struct cfg802154_ops mac802154_config_ops = {
508 .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
509 .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
510 .suspend = ieee802154_suspend,
511 .resume = ieee802154_resume,
512 .add_virtual_intf = ieee802154_add_iface,
513 .del_virtual_intf = ieee802154_del_iface,
514 .set_channel = ieee802154_set_channel,
515 .set_cca_mode = ieee802154_set_cca_mode,
516 .set_cca_ed_level = ieee802154_set_cca_ed_level,
517 .set_tx_power = ieee802154_set_tx_power,
518 .set_pan_id = ieee802154_set_pan_id,
519 .set_short_addr = ieee802154_set_short_addr,
520 .set_backoff_exponent = ieee802154_set_backoff_exponent,
521 .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
522 .set_max_frame_retries = ieee802154_set_max_frame_retries,
523 .set_lbt_mode = ieee802154_set_lbt_mode,
524 .set_ackreq_default = ieee802154_set_ackreq_default,
525 .trigger_scan = mac802154_trigger_scan,
526 .abort_scan = mac802154_abort_scan,
527 .send_beacons = mac802154_send_beacons,
528 .stop_beacons = mac802154_stop_beacons,
529#ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
530 .get_llsec_table = ieee802154_get_llsec_table,
531 .lock_llsec_table = ieee802154_lock_llsec_table,
532 .unlock_llsec_table = ieee802154_unlock_llsec_table,
533 /* TODO above */
534 .set_llsec_params = ieee802154_set_llsec_params,
535 .get_llsec_params = ieee802154_get_llsec_params,
536 .add_llsec_key = ieee802154_add_llsec_key,
537 .del_llsec_key = ieee802154_del_llsec_key,
538 .add_seclevel = ieee802154_add_seclevel,
539 .del_seclevel = ieee802154_del_seclevel,
540 .add_device = ieee802154_add_device,
541 .del_device = ieee802154_del_device,
542 .add_devkey = ieee802154_add_devkey,
543 .del_devkey = ieee802154_del_devkey,
544#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
545};
546

source code of linux/net/mac802154/cfg.c