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
17 static struct net_device *
ieee802154_add_iface_deprecated(struct wpan_phy * wpan_phy,const char * name,unsigned char name_assign_type,int type)18 ieee802154_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
ieee802154_del_iface_deprecated(struct wpan_phy * wpan_phy,struct net_device * dev)33 static 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
ieee802154_suspend(struct wpan_phy * wpan_phy)42 static 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_stop_queue(&local->hw);
50 synchronize_net();
51
52 /* stop hardware - this must stop RX */
53 ieee802154_stop_device(local);
54
55 suspend:
56 local->suspended = true;
57 return 0;
58 }
59
ieee802154_resume(struct wpan_phy * wpan_phy)60 static 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);
71 if (ret)
72 return ret;
73
74 wake_up:
75 ieee802154_wake_queue(&local->hw);
76 local->suspended = false;
77 return 0;
78 }
79 #else
80 #define ieee802154_suspend NULL
81 #define ieee802154_resume NULL
82 #endif
83
84 static int
ieee802154_add_iface(struct wpan_phy * phy,const char * name,unsigned char name_assign_type,enum nl802154_iftype type,__le64 extended_addr)85 ieee802154_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
97 static int
ieee802154_del_iface(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev)98 ieee802154_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
105 static int
ieee802154_set_channel(struct wpan_phy * wpan_phy,u8 page,u8 channel)106 ieee802154_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 ret = drv_set_channel(local, page, channel);
118 if (!ret) {
119 wpan_phy->current_page = page;
120 wpan_phy->current_channel = channel;
121 ieee802154_configure_durations(wpan_phy);
122 }
123
124 return ret;
125 }
126
127 static int
ieee802154_set_cca_mode(struct wpan_phy * wpan_phy,const struct wpan_phy_cca * cca)128 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
129 const struct wpan_phy_cca *cca)
130 {
131 struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
132 int ret;
133
134 ASSERT_RTNL();
135
136 if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))
137 return 0;
138
139 ret = drv_set_cca_mode(local, cca);
140 if (!ret)
141 wpan_phy->cca = *cca;
142
143 return ret;
144 }
145
146 static int
ieee802154_set_cca_ed_level(struct wpan_phy * wpan_phy,s32 ed_level)147 ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
148 {
149 struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
150 int ret;
151
152 ASSERT_RTNL();
153
154 if (wpan_phy->cca_ed_level == ed_level)
155 return 0;
156
157 ret = drv_set_cca_ed_level(local, ed_level);
158 if (!ret)
159 wpan_phy->cca_ed_level = ed_level;
160
161 return ret;
162 }
163
164 static int
ieee802154_set_tx_power(struct wpan_phy * wpan_phy,s32 power)165 ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
166 {
167 struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
168 int ret;
169
170 ASSERT_RTNL();
171
172 if (wpan_phy->transmit_power == power)
173 return 0;
174
175 ret = drv_set_tx_power(local, power);
176 if (!ret)
177 wpan_phy->transmit_power = power;
178
179 return ret;
180 }
181
182 static int
ieee802154_set_pan_id(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,__le16 pan_id)183 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
184 __le16 pan_id)
185 {
186 int ret;
187
188 ASSERT_RTNL();
189
190 if (wpan_dev->pan_id == pan_id)
191 return 0;
192
193 ret = mac802154_wpan_update_llsec(wpan_dev->netdev);
194 if (!ret)
195 wpan_dev->pan_id = pan_id;
196
197 return ret;
198 }
199
200 static int
ieee802154_set_backoff_exponent(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,u8 min_be,u8 max_be)201 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
202 struct wpan_dev *wpan_dev,
203 u8 min_be, u8 max_be)
204 {
205 ASSERT_RTNL();
206
207 wpan_dev->min_be = min_be;
208 wpan_dev->max_be = max_be;
209 return 0;
210 }
211
212 static int
ieee802154_set_short_addr(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,__le16 short_addr)213 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
214 __le16 short_addr)
215 {
216 ASSERT_RTNL();
217
218 wpan_dev->short_addr = short_addr;
219 return 0;
220 }
221
222 static int
ieee802154_set_max_csma_backoffs(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,u8 max_csma_backoffs)223 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
224 struct wpan_dev *wpan_dev,
225 u8 max_csma_backoffs)
226 {
227 ASSERT_RTNL();
228
229 wpan_dev->csma_retries = max_csma_backoffs;
230 return 0;
231 }
232
233 static int
ieee802154_set_max_frame_retries(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,s8 max_frame_retries)234 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
235 struct wpan_dev *wpan_dev,
236 s8 max_frame_retries)
237 {
238 ASSERT_RTNL();
239
240 wpan_dev->frame_retries = max_frame_retries;
241 return 0;
242 }
243
244 static int
ieee802154_set_lbt_mode(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,bool mode)245 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
246 bool mode)
247 {
248 ASSERT_RTNL();
249
250 wpan_dev->lbt = mode;
251 return 0;
252 }
253
254 static int
ieee802154_set_ackreq_default(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,bool ackreq)255 ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
256 struct wpan_dev *wpan_dev, bool ackreq)
257 {
258 ASSERT_RTNL();
259
260 wpan_dev->ackreq = ackreq;
261 return 0;
262 }
263
264 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
265 static void
ieee802154_get_llsec_table(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,struct ieee802154_llsec_table ** table)266 ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
267 struct wpan_dev *wpan_dev,
268 struct ieee802154_llsec_table **table)
269 {
270 struct net_device *dev = wpan_dev->netdev;
271 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
272
273 *table = &sdata->sec.table;
274 }
275
276 static void
ieee802154_lock_llsec_table(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev)277 ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
278 struct wpan_dev *wpan_dev)
279 {
280 struct net_device *dev = wpan_dev->netdev;
281 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
282
283 mutex_lock(&sdata->sec_mtx);
284 }
285
286 static void
ieee802154_unlock_llsec_table(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev)287 ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
288 struct wpan_dev *wpan_dev)
289 {
290 struct net_device *dev = wpan_dev->netdev;
291 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
292
293 mutex_unlock(&sdata->sec_mtx);
294 }
295
296 static int
ieee802154_set_llsec_params(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,const struct ieee802154_llsec_params * params,int changed)297 ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
298 struct wpan_dev *wpan_dev,
299 const struct ieee802154_llsec_params *params,
300 int changed)
301 {
302 struct net_device *dev = wpan_dev->netdev;
303 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
304 int res;
305
306 mutex_lock(&sdata->sec_mtx);
307 res = mac802154_llsec_set_params(&sdata->sec, params, changed);
308 mutex_unlock(&sdata->sec_mtx);
309
310 return res;
311 }
312
313 static int
ieee802154_get_llsec_params(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,struct ieee802154_llsec_params * params)314 ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
315 struct wpan_dev *wpan_dev,
316 struct ieee802154_llsec_params *params)
317 {
318 struct net_device *dev = wpan_dev->netdev;
319 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
320 int res;
321
322 mutex_lock(&sdata->sec_mtx);
323 res = mac802154_llsec_get_params(&sdata->sec, params);
324 mutex_unlock(&sdata->sec_mtx);
325
326 return res;
327 }
328
329 static int
ieee802154_add_llsec_key(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,const struct ieee802154_llsec_key_id * id,const struct ieee802154_llsec_key * key)330 ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
331 const struct ieee802154_llsec_key_id *id,
332 const struct ieee802154_llsec_key *key)
333 {
334 struct net_device *dev = wpan_dev->netdev;
335 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
336 int res;
337
338 mutex_lock(&sdata->sec_mtx);
339 res = mac802154_llsec_key_add(&sdata->sec, id, key);
340 mutex_unlock(&sdata->sec_mtx);
341
342 return res;
343 }
344
345 static int
ieee802154_del_llsec_key(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,const struct ieee802154_llsec_key_id * id)346 ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
347 const struct ieee802154_llsec_key_id *id)
348 {
349 struct net_device *dev = wpan_dev->netdev;
350 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
351 int res;
352
353 mutex_lock(&sdata->sec_mtx);
354 res = mac802154_llsec_key_del(&sdata->sec, id);
355 mutex_unlock(&sdata->sec_mtx);
356
357 return res;
358 }
359
360 static int
ieee802154_add_seclevel(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,const struct ieee802154_llsec_seclevel * sl)361 ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
362 const struct ieee802154_llsec_seclevel *sl)
363 {
364 struct net_device *dev = wpan_dev->netdev;
365 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
366 int res;
367
368 mutex_lock(&sdata->sec_mtx);
369 res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
370 mutex_unlock(&sdata->sec_mtx);
371
372 return res;
373 }
374
375 static int
ieee802154_del_seclevel(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,const struct ieee802154_llsec_seclevel * sl)376 ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
377 const struct ieee802154_llsec_seclevel *sl)
378 {
379 struct net_device *dev = wpan_dev->netdev;
380 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
381 int res;
382
383 mutex_lock(&sdata->sec_mtx);
384 res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
385 mutex_unlock(&sdata->sec_mtx);
386
387 return res;
388 }
389
390 static int
ieee802154_add_device(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,const struct ieee802154_llsec_device * dev_desc)391 ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
392 const struct ieee802154_llsec_device *dev_desc)
393 {
394 struct net_device *dev = wpan_dev->netdev;
395 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
396 int res;
397
398 mutex_lock(&sdata->sec_mtx);
399 res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
400 mutex_unlock(&sdata->sec_mtx);
401
402 return res;
403 }
404
405 static int
ieee802154_del_device(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,__le64 extended_addr)406 ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
407 __le64 extended_addr)
408 {
409 struct net_device *dev = wpan_dev->netdev;
410 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
411 int res;
412
413 mutex_lock(&sdata->sec_mtx);
414 res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
415 mutex_unlock(&sdata->sec_mtx);
416
417 return res;
418 }
419
420 static int
ieee802154_add_devkey(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,__le64 extended_addr,const struct ieee802154_llsec_device_key * key)421 ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
422 __le64 extended_addr,
423 const struct ieee802154_llsec_device_key *key)
424 {
425 struct net_device *dev = wpan_dev->netdev;
426 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
427 int res;
428
429 mutex_lock(&sdata->sec_mtx);
430 res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
431 mutex_unlock(&sdata->sec_mtx);
432
433 return res;
434 }
435
436 static int
ieee802154_del_devkey(struct wpan_phy * wpan_phy,struct wpan_dev * wpan_dev,__le64 extended_addr,const struct ieee802154_llsec_device_key * key)437 ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
438 __le64 extended_addr,
439 const struct ieee802154_llsec_device_key *key)
440 {
441 struct net_device *dev = wpan_dev->netdev;
442 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
443 int res;
444
445 mutex_lock(&sdata->sec_mtx);
446 res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
447 mutex_unlock(&sdata->sec_mtx);
448
449 return res;
450 }
451 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
452
453 const struct cfg802154_ops mac802154_config_ops = {
454 .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
455 .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
456 .suspend = ieee802154_suspend,
457 .resume = ieee802154_resume,
458 .add_virtual_intf = ieee802154_add_iface,
459 .del_virtual_intf = ieee802154_del_iface,
460 .set_channel = ieee802154_set_channel,
461 .set_cca_mode = ieee802154_set_cca_mode,
462 .set_cca_ed_level = ieee802154_set_cca_ed_level,
463 .set_tx_power = ieee802154_set_tx_power,
464 .set_pan_id = ieee802154_set_pan_id,
465 .set_short_addr = ieee802154_set_short_addr,
466 .set_backoff_exponent = ieee802154_set_backoff_exponent,
467 .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
468 .set_max_frame_retries = ieee802154_set_max_frame_retries,
469 .set_lbt_mode = ieee802154_set_lbt_mode,
470 .set_ackreq_default = ieee802154_set_ackreq_default,
471 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
472 .get_llsec_table = ieee802154_get_llsec_table,
473 .lock_llsec_table = ieee802154_lock_llsec_table,
474 .unlock_llsec_table = ieee802154_unlock_llsec_table,
475 /* TODO above */
476 .set_llsec_params = ieee802154_set_llsec_params,
477 .get_llsec_params = ieee802154_get_llsec_params,
478 .add_llsec_key = ieee802154_add_llsec_key,
479 .del_llsec_key = ieee802154_del_llsec_key,
480 .add_seclevel = ieee802154_add_seclevel,
481 .del_seclevel = ieee802154_del_seclevel,
482 .add_device = ieee802154_add_device,
483 .del_device = ieee802154_del_device,
484 .add_devkey = ieee802154_add_devkey,
485 .del_devkey = ieee802154_del_devkey,
486 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
487 };
488