tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 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
127static int
128ieee802154_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
146static int
147ieee802154_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
164static int
165ieee802154_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
182static int
183ieee802154_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
200static int
201ieee802154_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
212static int
213ieee802154_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
222static int
223ieee802154_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
233static int
234ieee802154_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
244static int
245ieee802154_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
254static int
255ieee802154_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
265static void
266ieee802154_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
276static void
277ieee802154_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
286static void
287ieee802154_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
296static int
297ieee802154_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
313static int
314ieee802154_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
329static int
330ieee802154_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
345static int
346ieee802154_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
360static int
361ieee802154_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
375static int
376ieee802154_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
390static int
391ieee802154_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
405static int
406ieee802154_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
420static int
421ieee802154_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
436static int
437ieee802154_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
453const 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};