tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
23static struct net_device *
24ieee802154_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
39static 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
48static 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
61suspend:
62 local->suspended = true;
63 return 0;
64}
65
66static 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
80wake_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
90static int
91ieee802154_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
103static int
104ieee802154_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
111static int
112ieee802154_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
132static int
133ieee802154_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
151static int
152ieee802154_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
169static int
170ieee802154_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
187static int
188ieee802154_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
205static int
206ieee802154_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
217static int
218ieee802154_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
227static int
228ieee802154_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
238static int
239ieee802154_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
249static int
250ieee802154_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
259static int
260ieee802154_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
270static void
271ieee802154_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
281static void
282ieee802154_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
291static void
292ieee802154_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
301static int
302ieee802154_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
318static int
319ieee802154_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
334static int
335ieee802154_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
350static int
351ieee802154_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
365static int
366ieee802154_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
380static int
381ieee802154_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
395static int
396ieee802154_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
410static int
411ieee802154_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
425static int
426ieee802154_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
441static int
442ieee802154_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
458const 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};