xref: /kernel/linux/linux-6.6/net/mac802154/cfg.c (revision 62306a36)
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(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(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(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, local->phy->filtering, &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(err);
95}
96
97static int
98ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
99{
100	ieee802154_if_remove(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(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(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(wpan_phy);
136	int ret;
137
138	ASSERT_RTNL();
139
140	if (wpan_phy_cca_cmp(&wpan_phy->cca, 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(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, 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(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, 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(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(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(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(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(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(&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(&sdata->sec, params, changed);
362	mutex_unlock(&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(&sdata->sec, params);
378	mutex_unlock(&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(&sdata->sec, id, key);
394	mutex_unlock(&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(&sdata->sec, id);
409	mutex_unlock(&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(&sdata->sec, sl);
424	mutex_unlock(&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(&sdata->sec, sl);
439	mutex_unlock(&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(&sdata->sec, dev_desc);
454	mutex_unlock(&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(&sdata->sec, extended_addr);
469	mutex_unlock(&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(&sdata->sec, extended_addr, key);
485	mutex_unlock(&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(&sdata->sec, extended_addr, key);
501	mutex_unlock(&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