1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2015 Intel Deutschland GmbH
4 * Copyright (C) 2022-2024 Intel Corporation
5 */
6 #include <net/mac80211.h>
7 #include "ieee80211_i.h"
8 #include "trace.h"
9 #include "driver-ops.h"
10 #include "debugfs_sta.h"
11 #include "debugfs_netdev.h"
12
drv_start(struct ieee80211_local * local)13 int drv_start(struct ieee80211_local *local)
14 {
15 int ret;
16
17 might_sleep();
18 lockdep_assert_wiphy(local->hw.wiphy);
19
20 if (WARN_ON(local->started))
21 return -EALREADY;
22
23 trace_drv_start(local);
24 local->started = true;
25 /* allow rx frames */
26 smp_mb();
27 ret = local->ops->start(&local->hw);
28 trace_drv_return_int(local, ret);
29
30 if (ret)
31 local->started = false;
32
33 return ret;
34 }
35
drv_stop(struct ieee80211_local * local)36 void drv_stop(struct ieee80211_local *local)
37 {
38 might_sleep();
39 lockdep_assert_wiphy(local->hw.wiphy);
40
41 if (WARN_ON(!local->started))
42 return;
43
44 trace_drv_stop(local);
45 local->ops->stop(&local->hw);
46 trace_drv_return_void(local);
47
48 /* sync away all work on the tasklet before clearing started */
49 tasklet_disable(&local->tasklet);
50 tasklet_enable(&local->tasklet);
51
52 barrier();
53
54 local->started = false;
55 }
56
drv_add_interface(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata)57 int drv_add_interface(struct ieee80211_local *local,
58 struct ieee80211_sub_if_data *sdata)
59 {
60 int ret;
61
62 might_sleep();
63 lockdep_assert_wiphy(local->hw.wiphy);
64
65 if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
66 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
67 !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
68 !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))))
69 return -EINVAL;
70
71 trace_drv_add_interface(local, sdata);
72 ret = local->ops->add_interface(&local->hw, &sdata->vif);
73 trace_drv_return_int(local, ret);
74
75 if (ret)
76 return ret;
77
78 if (!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) {
79 sdata->flags |= IEEE80211_SDATA_IN_DRIVER;
80
81 drv_vif_add_debugfs(local, sdata);
82 /* initially vif is not MLD */
83 ieee80211_link_debugfs_drv_add(&sdata->deflink);
84 }
85
86 return 0;
87 }
88
drv_change_interface(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum nl80211_iftype type,bool p2p)89 int drv_change_interface(struct ieee80211_local *local,
90 struct ieee80211_sub_if_data *sdata,
91 enum nl80211_iftype type, bool p2p)
92 {
93 int ret;
94
95 might_sleep();
96 lockdep_assert_wiphy(local->hw.wiphy);
97
98 if (!check_sdata_in_driver(sdata))
99 return -EIO;
100
101 trace_drv_change_interface(local, sdata, type, p2p);
102 ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
103 trace_drv_return_int(local, ret);
104 return ret;
105 }
106
drv_remove_interface(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata)107 void drv_remove_interface(struct ieee80211_local *local,
108 struct ieee80211_sub_if_data *sdata)
109 {
110 might_sleep();
111 lockdep_assert_wiphy(local->hw.wiphy);
112
113 if (!check_sdata_in_driver(sdata))
114 return;
115
116 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
117
118 /* Remove driver debugfs entries */
119 ieee80211_debugfs_recreate_netdev(sdata, sdata->vif.valid_links);
120
121 trace_drv_remove_interface(local, sdata);
122 local->ops->remove_interface(&local->hw, &sdata->vif);
123 trace_drv_return_void(local);
124 }
125
126 __must_check
drv_sta_state(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct sta_info * sta,enum ieee80211_sta_state old_state,enum ieee80211_sta_state new_state)127 int drv_sta_state(struct ieee80211_local *local,
128 struct ieee80211_sub_if_data *sdata,
129 struct sta_info *sta,
130 enum ieee80211_sta_state old_state,
131 enum ieee80211_sta_state new_state)
132 {
133 int ret = 0;
134
135 might_sleep();
136 lockdep_assert_wiphy(local->hw.wiphy);
137
138 sdata = get_bss_sdata(sdata);
139 if (!check_sdata_in_driver(sdata))
140 return -EIO;
141
142 trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
143 if (local->ops->sta_state) {
144 ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
145 old_state, new_state);
146 } else if (old_state == IEEE80211_STA_AUTH &&
147 new_state == IEEE80211_STA_ASSOC) {
148 ret = drv_sta_add(local, sdata, &sta->sta);
149 if (ret == 0) {
150 sta->uploaded = true;
151 if (rcu_access_pointer(sta->sta.rates))
152 drv_sta_rate_tbl_update(local, sdata, &sta->sta);
153 }
154 } else if (old_state == IEEE80211_STA_ASSOC &&
155 new_state == IEEE80211_STA_AUTH) {
156 drv_sta_remove(local, sdata, &sta->sta);
157 }
158 trace_drv_return_int(local, ret);
159 return ret;
160 }
161
162 __must_check
drv_sta_set_txpwr(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct sta_info * sta)163 int drv_sta_set_txpwr(struct ieee80211_local *local,
164 struct ieee80211_sub_if_data *sdata,
165 struct sta_info *sta)
166 {
167 int ret = -EOPNOTSUPP;
168
169 might_sleep();
170 lockdep_assert_wiphy(local->hw.wiphy);
171
172 sdata = get_bss_sdata(sdata);
173 if (!check_sdata_in_driver(sdata))
174 return -EIO;
175
176 trace_drv_sta_set_txpwr(local, sdata, &sta->sta);
177 if (local->ops->sta_set_txpwr)
178 ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif,
179 &sta->sta);
180 trace_drv_return_int(local, ret);
181 return ret;
182 }
183
drv_sta_rc_update(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct ieee80211_sta * sta,u32 changed)184 void drv_sta_rc_update(struct ieee80211_local *local,
185 struct ieee80211_sub_if_data *sdata,
186 struct ieee80211_sta *sta, u32 changed)
187 {
188 sdata = get_bss_sdata(sdata);
189 if (!check_sdata_in_driver(sdata))
190 return;
191
192 WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
193 (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
194 sdata->vif.type != NL80211_IFTYPE_MESH_POINT));
195
196 trace_drv_sta_rc_update(local, sdata, sta, changed);
197 if (local->ops->sta_rc_update)
198 local->ops->sta_rc_update(&local->hw, &sdata->vif,
199 sta, changed);
200
201 trace_drv_return_void(local);
202 }
203
drv_conf_tx(struct ieee80211_local * local,struct ieee80211_link_data * link,u16 ac,const struct ieee80211_tx_queue_params * params)204 int drv_conf_tx(struct ieee80211_local *local,
205 struct ieee80211_link_data *link, u16 ac,
206 const struct ieee80211_tx_queue_params *params)
207 {
208 struct ieee80211_sub_if_data *sdata = link->sdata;
209 int ret = -EOPNOTSUPP;
210
211 might_sleep();
212 lockdep_assert_wiphy(local->hw.wiphy);
213
214 if (!check_sdata_in_driver(sdata))
215 return -EIO;
216
217 if (!ieee80211_vif_link_active(&sdata->vif, link->link_id))
218 return 0;
219
220 if (params->cw_min == 0 || params->cw_min > params->cw_max) {
221 /*
222 * If we can't configure hardware anyway, don't warn. We may
223 * never have initialized the CW parameters.
224 */
225 WARN_ONCE(local->ops->conf_tx,
226 "%s: invalid CW_min/CW_max: %d/%d\n",
227 sdata->name, params->cw_min, params->cw_max);
228 return -EINVAL;
229 }
230
231 trace_drv_conf_tx(local, sdata, link->link_id, ac, params);
232 if (local->ops->conf_tx)
233 ret = local->ops->conf_tx(&local->hw, &sdata->vif,
234 link->link_id, ac, params);
235 trace_drv_return_int(local, ret);
236 return ret;
237 }
238
drv_get_tsf(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata)239 u64 drv_get_tsf(struct ieee80211_local *local,
240 struct ieee80211_sub_if_data *sdata)
241 {
242 u64 ret = -1ULL;
243
244 might_sleep();
245 lockdep_assert_wiphy(local->hw.wiphy);
246
247 if (!check_sdata_in_driver(sdata))
248 return ret;
249
250 trace_drv_get_tsf(local, sdata);
251 if (local->ops->get_tsf)
252 ret = local->ops->get_tsf(&local->hw, &sdata->vif);
253 trace_drv_return_u64(local, ret);
254 return ret;
255 }
256
drv_set_tsf(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,u64 tsf)257 void drv_set_tsf(struct ieee80211_local *local,
258 struct ieee80211_sub_if_data *sdata,
259 u64 tsf)
260 {
261 might_sleep();
262 lockdep_assert_wiphy(local->hw.wiphy);
263
264 if (!check_sdata_in_driver(sdata))
265 return;
266
267 trace_drv_set_tsf(local, sdata, tsf);
268 if (local->ops->set_tsf)
269 local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
270 trace_drv_return_void(local);
271 }
272
drv_offset_tsf(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,s64 offset)273 void drv_offset_tsf(struct ieee80211_local *local,
274 struct ieee80211_sub_if_data *sdata,
275 s64 offset)
276 {
277 might_sleep();
278 lockdep_assert_wiphy(local->hw.wiphy);
279
280 if (!check_sdata_in_driver(sdata))
281 return;
282
283 trace_drv_offset_tsf(local, sdata, offset);
284 if (local->ops->offset_tsf)
285 local->ops->offset_tsf(&local->hw, &sdata->vif, offset);
286 trace_drv_return_void(local);
287 }
288
drv_reset_tsf(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata)289 void drv_reset_tsf(struct ieee80211_local *local,
290 struct ieee80211_sub_if_data *sdata)
291 {
292 might_sleep();
293 lockdep_assert_wiphy(local->hw.wiphy);
294
295 if (!check_sdata_in_driver(sdata))
296 return;
297
298 trace_drv_reset_tsf(local, sdata);
299 if (local->ops->reset_tsf)
300 local->ops->reset_tsf(&local->hw, &sdata->vif);
301 trace_drv_return_void(local);
302 }
303
drv_assign_vif_chanctx(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct ieee80211_bss_conf * link_conf,struct ieee80211_chanctx * ctx)304 int drv_assign_vif_chanctx(struct ieee80211_local *local,
305 struct ieee80211_sub_if_data *sdata,
306 struct ieee80211_bss_conf *link_conf,
307 struct ieee80211_chanctx *ctx)
308 {
309 int ret = 0;
310
311 might_sleep();
312 lockdep_assert_wiphy(local->hw.wiphy);
313
314 if (!check_sdata_in_driver(sdata))
315 return -EIO;
316
317 if (!ieee80211_vif_link_active(&sdata->vif, link_conf->link_id))
318 return 0;
319
320 trace_drv_assign_vif_chanctx(local, sdata, link_conf, ctx);
321 if (local->ops->assign_vif_chanctx) {
322 WARN_ON_ONCE(!ctx->driver_present);
323 ret = local->ops->assign_vif_chanctx(&local->hw,
324 &sdata->vif,
325 link_conf,
326 &ctx->conf);
327 }
328 trace_drv_return_int(local, ret);
329
330 return ret;
331 }
332
drv_unassign_vif_chanctx(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct ieee80211_bss_conf * link_conf,struct ieee80211_chanctx * ctx)333 void drv_unassign_vif_chanctx(struct ieee80211_local *local,
334 struct ieee80211_sub_if_data *sdata,
335 struct ieee80211_bss_conf *link_conf,
336 struct ieee80211_chanctx *ctx)
337 {
338 might_sleep();
339 lockdep_assert_wiphy(local->hw.wiphy);
340
341 if (!check_sdata_in_driver(sdata))
342 return;
343
344 if (!ieee80211_vif_link_active(&sdata->vif, link_conf->link_id))
345 return;
346
347 trace_drv_unassign_vif_chanctx(local, sdata, link_conf, ctx);
348 if (local->ops->unassign_vif_chanctx) {
349 WARN_ON_ONCE(!ctx->driver_present);
350 local->ops->unassign_vif_chanctx(&local->hw,
351 &sdata->vif,
352 link_conf,
353 &ctx->conf);
354 }
355 trace_drv_return_void(local);
356 }
357
drv_switch_vif_chanctx(struct ieee80211_local * local,struct ieee80211_vif_chanctx_switch * vifs,int n_vifs,enum ieee80211_chanctx_switch_mode mode)358 int drv_switch_vif_chanctx(struct ieee80211_local *local,
359 struct ieee80211_vif_chanctx_switch *vifs,
360 int n_vifs, enum ieee80211_chanctx_switch_mode mode)
361 {
362 int ret = 0;
363 int i;
364
365 might_sleep();
366 lockdep_assert_wiphy(local->hw.wiphy);
367
368 if (!local->ops->switch_vif_chanctx)
369 return -EOPNOTSUPP;
370
371 for (i = 0; i < n_vifs; i++) {
372 struct ieee80211_chanctx *new_ctx =
373 container_of(vifs[i].new_ctx,
374 struct ieee80211_chanctx,
375 conf);
376 struct ieee80211_chanctx *old_ctx =
377 container_of(vifs[i].old_ctx,
378 struct ieee80211_chanctx,
379 conf);
380
381 WARN_ON_ONCE(!old_ctx->driver_present);
382 WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS &&
383 new_ctx->driver_present) ||
384 (mode == CHANCTX_SWMODE_REASSIGN_VIF &&
385 !new_ctx->driver_present));
386 }
387
388 trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode);
389 ret = local->ops->switch_vif_chanctx(&local->hw,
390 vifs, n_vifs, mode);
391 trace_drv_return_int(local, ret);
392
393 if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
394 for (i = 0; i < n_vifs; i++) {
395 struct ieee80211_chanctx *new_ctx =
396 container_of(vifs[i].new_ctx,
397 struct ieee80211_chanctx,
398 conf);
399 struct ieee80211_chanctx *old_ctx =
400 container_of(vifs[i].old_ctx,
401 struct ieee80211_chanctx,
402 conf);
403
404 new_ctx->driver_present = true;
405 old_ctx->driver_present = false;
406 }
407 }
408
409 return ret;
410 }
411
drv_ampdu_action(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct ieee80211_ampdu_params * params)412 int drv_ampdu_action(struct ieee80211_local *local,
413 struct ieee80211_sub_if_data *sdata,
414 struct ieee80211_ampdu_params *params)
415 {
416 int ret = -EOPNOTSUPP;
417
418 might_sleep();
419 lockdep_assert_wiphy(local->hw.wiphy);
420
421 sdata = get_bss_sdata(sdata);
422 if (!check_sdata_in_driver(sdata))
423 return -EIO;
424
425 trace_drv_ampdu_action(local, sdata, params);
426
427 if (local->ops->ampdu_action)
428 ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params);
429
430 trace_drv_return_int(local, ret);
431
432 return ret;
433 }
434
drv_link_info_changed(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct ieee80211_bss_conf * info,int link_id,u64 changed)435 void drv_link_info_changed(struct ieee80211_local *local,
436 struct ieee80211_sub_if_data *sdata,
437 struct ieee80211_bss_conf *info,
438 int link_id, u64 changed)
439 {
440 might_sleep();
441 lockdep_assert_wiphy(local->hw.wiphy);
442
443 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON |
444 BSS_CHANGED_BEACON_ENABLED) &&
445 sdata->vif.type != NL80211_IFTYPE_AP &&
446 sdata->vif.type != NL80211_IFTYPE_ADHOC &&
447 sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
448 sdata->vif.type != NL80211_IFTYPE_OCB))
449 return;
450
451 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
452 sdata->vif.type == NL80211_IFTYPE_NAN ||
453 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
454 !sdata->vif.bss_conf.mu_mimo_owner &&
455 !(changed & BSS_CHANGED_TXPOWER))))
456 return;
457
458 if (!check_sdata_in_driver(sdata))
459 return;
460
461 if (!ieee80211_vif_link_active(&sdata->vif, link_id))
462 return;
463
464 trace_drv_link_info_changed(local, sdata, info, changed);
465 if (local->ops->link_info_changed)
466 local->ops->link_info_changed(&local->hw, &sdata->vif,
467 info, changed);
468 else if (local->ops->bss_info_changed)
469 local->ops->bss_info_changed(&local->hw, &sdata->vif,
470 info, changed);
471 trace_drv_return_void(local);
472 }
473
drv_set_key(struct ieee80211_local * local,enum set_key_cmd cmd,struct ieee80211_sub_if_data * sdata,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)474 int drv_set_key(struct ieee80211_local *local,
475 enum set_key_cmd cmd,
476 struct ieee80211_sub_if_data *sdata,
477 struct ieee80211_sta *sta,
478 struct ieee80211_key_conf *key)
479 {
480 int ret;
481
482 might_sleep();
483 lockdep_assert_wiphy(local->hw.wiphy);
484
485 sdata = get_bss_sdata(sdata);
486 if (!check_sdata_in_driver(sdata))
487 return -EIO;
488
489 if (WARN_ON(key->link_id >= 0 && sdata->vif.active_links &&
490 !(sdata->vif.active_links & BIT(key->link_id))))
491 return -ENOLINK;
492
493 trace_drv_set_key(local, cmd, sdata, sta, key);
494 ret = local->ops->set_key(&local->hw, cmd, &sdata->vif, sta, key);
495 trace_drv_return_int(local, ret);
496 return ret;
497 }
498
drv_change_vif_links(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,u16 old_links,u16 new_links,struct ieee80211_bss_conf * old[IEEE80211_MLD_MAX_NUM_LINKS])499 int drv_change_vif_links(struct ieee80211_local *local,
500 struct ieee80211_sub_if_data *sdata,
501 u16 old_links, u16 new_links,
502 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
503 {
504 struct ieee80211_link_data *link;
505 unsigned long links_to_add;
506 unsigned long links_to_rem;
507 unsigned int link_id;
508 int ret = -EOPNOTSUPP;
509
510 might_sleep();
511 lockdep_assert_wiphy(local->hw.wiphy);
512
513 if (!check_sdata_in_driver(sdata))
514 return -EIO;
515
516 if (old_links == new_links)
517 return 0;
518
519 links_to_add = ~old_links & new_links;
520 links_to_rem = old_links & ~new_links;
521
522 for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
523 link = rcu_access_pointer(sdata->link[link_id]);
524
525 ieee80211_link_debugfs_drv_remove(link);
526 }
527
528 trace_drv_change_vif_links(local, sdata, old_links, new_links);
529 if (local->ops->change_vif_links)
530 ret = local->ops->change_vif_links(&local->hw, &sdata->vif,
531 old_links, new_links, old);
532 trace_drv_return_int(local, ret);
533
534 if (ret)
535 return ret;
536
537 if (!local->in_reconfig && !local->resuming) {
538 for_each_set_bit(link_id, &links_to_add,
539 IEEE80211_MLD_MAX_NUM_LINKS) {
540 link = rcu_access_pointer(sdata->link[link_id]);
541
542 ieee80211_link_debugfs_drv_add(link);
543 }
544 }
545
546 return 0;
547 }
548
drv_change_sta_links(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct ieee80211_sta * sta,u16 old_links,u16 new_links)549 int drv_change_sta_links(struct ieee80211_local *local,
550 struct ieee80211_sub_if_data *sdata,
551 struct ieee80211_sta *sta,
552 u16 old_links, u16 new_links)
553 {
554 struct sta_info *info = container_of(sta, struct sta_info, sta);
555 struct link_sta_info *link_sta;
556 unsigned long links_to_add;
557 unsigned long links_to_rem;
558 unsigned int link_id;
559 int ret = -EOPNOTSUPP;
560
561 might_sleep();
562 lockdep_assert_wiphy(local->hw.wiphy);
563
564 if (!check_sdata_in_driver(sdata))
565 return -EIO;
566
567 old_links &= sdata->vif.active_links;
568 new_links &= sdata->vif.active_links;
569
570 if (old_links == new_links)
571 return 0;
572
573 links_to_add = ~old_links & new_links;
574 links_to_rem = old_links & ~new_links;
575
576 for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
577 link_sta = rcu_dereference_protected(info->link[link_id],
578 lockdep_is_held(&local->hw.wiphy->mtx));
579
580 ieee80211_link_sta_debugfs_drv_remove(link_sta);
581 }
582
583 trace_drv_change_sta_links(local, sdata, sta, old_links, new_links);
584 if (local->ops->change_sta_links)
585 ret = local->ops->change_sta_links(&local->hw, &sdata->vif, sta,
586 old_links, new_links);
587 trace_drv_return_int(local, ret);
588
589 if (ret)
590 return ret;
591
592 /* during reconfig don't add it to debugfs again */
593 if (local->in_reconfig || local->resuming)
594 return 0;
595
596 for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) {
597 link_sta = rcu_dereference_protected(info->link[link_id],
598 lockdep_is_held(&local->hw.wiphy->mtx));
599 ieee80211_link_sta_debugfs_drv_add(link_sta);
600 }
601
602 return 0;
603 }
604