1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2015 Intel Deutschland GmbH
4 * Copyright (C) 2022-2025 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
13int 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
36void drv_stop(struct ieee80211_local *local, bool suspend)
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, suspend);
45 local->ops->stop(&local->hw, suspend);
46 trace_drv_return_void(local);
47
48 /* sync away all work on the tasklet before clearing started */
49 tasklet_disable(t: &local->tasklet);
50 tasklet_enable(t: &local->tasklet);
51
52 barrier();
53
54 local->started = false;
55}
56
57int 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 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR) &&
69 !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))))
70 return -EINVAL;
71
72 trace_drv_add_interface(local, sdata);
73 ret = local->ops->add_interface(&local->hw, &sdata->vif);
74 trace_drv_return_int(local, ret);
75
76 if (ret)
77 return ret;
78
79 if (!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) {
80 sdata->flags |= IEEE80211_SDATA_IN_DRIVER;
81
82 drv_vif_add_debugfs(local, sdata);
83 /* initially vif is not MLD */
84 ieee80211_link_debugfs_drv_add(link: &sdata->deflink);
85 }
86
87 return 0;
88}
89
90int drv_change_interface(struct ieee80211_local *local,
91 struct ieee80211_sub_if_data *sdata,
92 enum nl80211_iftype type, bool p2p)
93{
94 int ret;
95
96 might_sleep();
97 lockdep_assert_wiphy(local->hw.wiphy);
98
99 if (!check_sdata_in_driver(sdata))
100 return -EIO;
101
102 trace_drv_change_interface(local, sdata, type, p2p);
103 ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
104 trace_drv_return_int(local, ret);
105 return ret;
106}
107
108void drv_remove_interface(struct ieee80211_local *local,
109 struct ieee80211_sub_if_data *sdata)
110{
111 might_sleep();
112 lockdep_assert_wiphy(local->hw.wiphy);
113
114 if (!check_sdata_in_driver(sdata))
115 return;
116
117 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
118
119 /*
120 * Remove driver debugfs entries.
121 * The virtual monitor interface doesn't get a debugfs
122 * entry, so it's exempt here.
123 */
124 if (sdata != rcu_access_pointer(local->monitor_sdata))
125 ieee80211_debugfs_recreate_netdev(sdata,
126 mld_vif: sdata->vif.valid_links);
127
128 trace_drv_remove_interface(local, sdata);
129 local->ops->remove_interface(&local->hw, &sdata->vif);
130 trace_drv_return_void(local);
131}
132
133__must_check
134int drv_sta_state(struct ieee80211_local *local,
135 struct ieee80211_sub_if_data *sdata,
136 struct sta_info *sta,
137 enum ieee80211_sta_state old_state,
138 enum ieee80211_sta_state new_state)
139{
140 int ret = 0;
141
142 might_sleep();
143 lockdep_assert_wiphy(local->hw.wiphy);
144
145 sdata = get_bss_sdata(sdata);
146 if (!check_sdata_in_driver(sdata))
147 return -EIO;
148
149 trace_drv_sta_state(local, sdata, sta: &sta->sta, old_state, new_state);
150 if (local->ops->sta_state) {
151 ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
152 old_state, new_state);
153 } else if (old_state == IEEE80211_STA_AUTH &&
154 new_state == IEEE80211_STA_ASSOC) {
155 ret = drv_sta_add(local, sdata, sta: &sta->sta);
156 if (ret == 0) {
157 sta->uploaded = true;
158 if (rcu_access_pointer(sta->sta.rates))
159 drv_sta_rate_tbl_update(local, sdata, sta: &sta->sta);
160 }
161 } else if (old_state == IEEE80211_STA_ASSOC &&
162 new_state == IEEE80211_STA_AUTH) {
163 drv_sta_remove(local, sdata, sta: &sta->sta);
164 }
165 trace_drv_return_int(local, ret);
166 return ret;
167}
168
169__must_check
170int drv_sta_set_txpwr(struct ieee80211_local *local,
171 struct ieee80211_sub_if_data *sdata,
172 struct sta_info *sta)
173{
174 int ret = -EOPNOTSUPP;
175
176 might_sleep();
177 lockdep_assert_wiphy(local->hw.wiphy);
178
179 sdata = get_bss_sdata(sdata);
180 if (!check_sdata_in_driver(sdata))
181 return -EIO;
182
183 trace_drv_sta_set_txpwr(local, sdata, sta: &sta->sta);
184 if (local->ops->sta_set_txpwr)
185 ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif,
186 &sta->sta);
187 trace_drv_return_int(local, ret);
188 return ret;
189}
190
191void drv_link_sta_rc_update(struct ieee80211_local *local,
192 struct ieee80211_sub_if_data *sdata,
193 struct ieee80211_link_sta *link_sta,
194 u32 changed)
195{
196 sdata = get_bss_sdata(sdata);
197 if (!check_sdata_in_driver(sdata))
198 return;
199
200 WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
201 (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
202 sdata->vif.type != NL80211_IFTYPE_MESH_POINT));
203
204 trace_drv_link_sta_rc_update(local, sdata, link_sta, changed);
205 if (local->ops->link_sta_rc_update)
206 local->ops->link_sta_rc_update(&local->hw, &sdata->vif,
207 link_sta, changed);
208
209 trace_drv_return_void(local);
210}
211
212int drv_conf_tx(struct ieee80211_local *local,
213 struct ieee80211_link_data *link, u16 ac,
214 const struct ieee80211_tx_queue_params *params)
215{
216 struct ieee80211_sub_if_data *sdata = link->sdata;
217 int ret = -EOPNOTSUPP;
218
219 might_sleep();
220 lockdep_assert_wiphy(local->hw.wiphy);
221
222 if (!check_sdata_in_driver(sdata))
223 return -EIO;
224
225 if (!ieee80211_vif_link_active(vif: &sdata->vif, link_id: link->link_id))
226 return 0;
227
228 if (params->cw_min == 0 || params->cw_min > params->cw_max) {
229 /*
230 * If we can't configure hardware anyway, don't warn. We may
231 * never have initialized the CW parameters.
232 */
233 WARN_ONCE(local->ops->conf_tx,
234 "%s: invalid CW_min/CW_max: %d/%d\n",
235 sdata->name, params->cw_min, params->cw_max);
236 return -EINVAL;
237 }
238
239 trace_drv_conf_tx(local, sdata, link_id: link->link_id, ac, params);
240 if (local->ops->conf_tx)
241 ret = local->ops->conf_tx(&local->hw, &sdata->vif,
242 link->link_id, ac, params);
243 trace_drv_return_int(local, ret);
244 return ret;
245}
246
247u64 drv_get_tsf(struct ieee80211_local *local,
248 struct ieee80211_sub_if_data *sdata)
249{
250 u64 ret = -1ULL;
251
252 might_sleep();
253 lockdep_assert_wiphy(local->hw.wiphy);
254
255 if (!check_sdata_in_driver(sdata))
256 return ret;
257
258 trace_drv_get_tsf(local, sdata);
259 if (local->ops->get_tsf)
260 ret = local->ops->get_tsf(&local->hw, &sdata->vif);
261 trace_drv_return_u64(local, ret);
262 return ret;
263}
264
265void drv_set_tsf(struct ieee80211_local *local,
266 struct ieee80211_sub_if_data *sdata,
267 u64 tsf)
268{
269 might_sleep();
270 lockdep_assert_wiphy(local->hw.wiphy);
271
272 if (!check_sdata_in_driver(sdata))
273 return;
274
275 trace_drv_set_tsf(local, sdata, tsf);
276 if (local->ops->set_tsf)
277 local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
278 trace_drv_return_void(local);
279}
280
281void drv_offset_tsf(struct ieee80211_local *local,
282 struct ieee80211_sub_if_data *sdata,
283 s64 offset)
284{
285 might_sleep();
286 lockdep_assert_wiphy(local->hw.wiphy);
287
288 if (!check_sdata_in_driver(sdata))
289 return;
290
291 trace_drv_offset_tsf(local, sdata, offset);
292 if (local->ops->offset_tsf)
293 local->ops->offset_tsf(&local->hw, &sdata->vif, offset);
294 trace_drv_return_void(local);
295}
296
297void drv_reset_tsf(struct ieee80211_local *local,
298 struct ieee80211_sub_if_data *sdata)
299{
300 might_sleep();
301 lockdep_assert_wiphy(local->hw.wiphy);
302
303 if (!check_sdata_in_driver(sdata))
304 return;
305
306 trace_drv_reset_tsf(local, sdata);
307 if (local->ops->reset_tsf)
308 local->ops->reset_tsf(&local->hw, &sdata->vif);
309 trace_drv_return_void(local);
310}
311
312int drv_assign_vif_chanctx(struct ieee80211_local *local,
313 struct ieee80211_sub_if_data *sdata,
314 struct ieee80211_bss_conf *link_conf,
315 struct ieee80211_chanctx *ctx)
316{
317 int ret = 0;
318
319 might_sleep();
320 lockdep_assert_wiphy(local->hw.wiphy);
321
322 /*
323 * We should perhaps push emulate chanctx down and only
324 * make it call ->config() when the chanctx is actually
325 * assigned here (and unassigned below), but that's yet
326 * another change to all drivers to add assign/unassign
327 * emulation callbacks. Maybe later.
328 */
329 if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
330 local->emulate_chanctx &&
331 !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF))
332 return 0;
333
334 if (!check_sdata_in_driver(sdata))
335 return -EIO;
336
337 if (!ieee80211_vif_link_active(vif: &sdata->vif, link_id: link_conf->link_id))
338 return 0;
339
340 trace_drv_assign_vif_chanctx(local, sdata, link_conf, ctx);
341 if (local->ops->assign_vif_chanctx) {
342 WARN_ON_ONCE(!ctx->driver_present);
343 ret = local->ops->assign_vif_chanctx(&local->hw,
344 &sdata->vif,
345 link_conf,
346 &ctx->conf);
347 }
348 trace_drv_return_int(local, ret);
349
350 return ret;
351}
352
353void drv_unassign_vif_chanctx(struct ieee80211_local *local,
354 struct ieee80211_sub_if_data *sdata,
355 struct ieee80211_bss_conf *link_conf,
356 struct ieee80211_chanctx *ctx)
357{
358 might_sleep();
359 lockdep_assert_wiphy(local->hw.wiphy);
360
361 if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
362 local->emulate_chanctx &&
363 !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF))
364 return;
365
366 if (!check_sdata_in_driver(sdata))
367 return;
368
369 if (!ieee80211_vif_link_active(vif: &sdata->vif, link_id: link_conf->link_id))
370 return;
371
372 trace_drv_unassign_vif_chanctx(local, sdata, link_conf, ctx);
373 if (local->ops->unassign_vif_chanctx) {
374 WARN_ON_ONCE(!ctx->driver_present);
375 local->ops->unassign_vif_chanctx(&local->hw,
376 &sdata->vif,
377 link_conf,
378 &ctx->conf);
379 }
380 trace_drv_return_void(local);
381}
382
383int drv_switch_vif_chanctx(struct ieee80211_local *local,
384 struct ieee80211_vif_chanctx_switch *vifs,
385 int n_vifs, enum ieee80211_chanctx_switch_mode mode)
386{
387 int ret = 0;
388 int i;
389
390 might_sleep();
391 lockdep_assert_wiphy(local->hw.wiphy);
392
393 if (!local->ops->switch_vif_chanctx)
394 return -EOPNOTSUPP;
395
396 for (i = 0; i < n_vifs; i++) {
397 struct ieee80211_chanctx *new_ctx =
398 container_of(vifs[i].new_ctx,
399 struct ieee80211_chanctx,
400 conf);
401 struct ieee80211_chanctx *old_ctx =
402 container_of(vifs[i].old_ctx,
403 struct ieee80211_chanctx,
404 conf);
405
406 WARN_ON_ONCE(!old_ctx->driver_present);
407 WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS &&
408 new_ctx->driver_present) ||
409 (mode == CHANCTX_SWMODE_REASSIGN_VIF &&
410 !new_ctx->driver_present));
411 }
412
413 trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode);
414 ret = local->ops->switch_vif_chanctx(&local->hw,
415 vifs, n_vifs, mode);
416 trace_drv_return_int(local, ret);
417
418 if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
419 for (i = 0; i < n_vifs; i++) {
420 struct ieee80211_chanctx *new_ctx =
421 container_of(vifs[i].new_ctx,
422 struct ieee80211_chanctx,
423 conf);
424 struct ieee80211_chanctx *old_ctx =
425 container_of(vifs[i].old_ctx,
426 struct ieee80211_chanctx,
427 conf);
428
429 new_ctx->driver_present = true;
430 old_ctx->driver_present = false;
431 }
432 }
433
434 return ret;
435}
436
437int drv_ampdu_action(struct ieee80211_local *local,
438 struct ieee80211_sub_if_data *sdata,
439 struct ieee80211_ampdu_params *params)
440{
441 int ret = -EOPNOTSUPP;
442
443 might_sleep();
444 lockdep_assert_wiphy(local->hw.wiphy);
445
446 sdata = get_bss_sdata(sdata);
447 if (!check_sdata_in_driver(sdata))
448 return -EIO;
449
450 trace_drv_ampdu_action(local, sdata, params);
451
452 if (local->ops->ampdu_action)
453 ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params);
454
455 trace_drv_return_int(local, ret);
456
457 return ret;
458}
459
460void drv_link_info_changed(struct ieee80211_local *local,
461 struct ieee80211_sub_if_data *sdata,
462 struct ieee80211_bss_conf *info,
463 int link_id, u64 changed)
464{
465 might_sleep();
466 lockdep_assert_wiphy(local->hw.wiphy);
467
468 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON |
469 BSS_CHANGED_BEACON_ENABLED) &&
470 sdata->vif.type != NL80211_IFTYPE_AP &&
471 sdata->vif.type != NL80211_IFTYPE_ADHOC &&
472 sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
473 sdata->vif.type != NL80211_IFTYPE_OCB))
474 return;
475
476 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
477 sdata->vif.type == NL80211_IFTYPE_NAN ||
478 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
479 !sdata->vif.bss_conf.mu_mimo_owner &&
480 !(changed & BSS_CHANGED_TXPOWER))))
481 return;
482
483 if (!check_sdata_in_driver(sdata))
484 return;
485
486 if (!ieee80211_vif_link_active(vif: &sdata->vif, link_id))
487 return;
488
489 trace_drv_link_info_changed(local, sdata, link_conf: info, changed);
490 if (local->ops->link_info_changed)
491 local->ops->link_info_changed(&local->hw, &sdata->vif,
492 info, changed);
493 else if (local->ops->bss_info_changed)
494 local->ops->bss_info_changed(&local->hw, &sdata->vif,
495 info, changed);
496 trace_drv_return_void(local);
497}
498
499int drv_set_key(struct ieee80211_local *local,
500 enum set_key_cmd cmd,
501 struct ieee80211_sub_if_data *sdata,
502 struct ieee80211_sta *sta,
503 struct ieee80211_key_conf *key)
504{
505 int ret;
506
507 might_sleep();
508 lockdep_assert_wiphy(local->hw.wiphy);
509
510 sdata = get_bss_sdata(sdata);
511 if (!check_sdata_in_driver(sdata))
512 return -EIO;
513
514 if (WARN_ON(key->link_id >= 0 && sdata->vif.active_links &&
515 !(sdata->vif.active_links & BIT(key->link_id))))
516 return -ENOLINK;
517
518 if (fips_enabled)
519 return -EOPNOTSUPP;
520
521 trace_drv_set_key(local, cmd, sdata, sta, key);
522 ret = local->ops->set_key(&local->hw, cmd, &sdata->vif, sta, key);
523 trace_drv_return_int(local, ret);
524 return ret;
525}
526
527int drv_change_vif_links(struct ieee80211_local *local,
528 struct ieee80211_sub_if_data *sdata,
529 u16 old_links, u16 new_links,
530 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
531{
532 struct ieee80211_link_data *link;
533 unsigned long links_to_add;
534 unsigned long links_to_rem;
535 unsigned int link_id;
536 int ret = -EOPNOTSUPP;
537
538 might_sleep();
539 lockdep_assert_wiphy(local->hw.wiphy);
540
541 if (!check_sdata_in_driver(sdata))
542 return -EIO;
543
544 if (old_links == new_links)
545 return 0;
546
547 links_to_add = ~old_links & new_links;
548 links_to_rem = old_links & ~new_links;
549
550 for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
551 link = rcu_access_pointer(sdata->link[link_id]);
552
553 ieee80211_link_debugfs_drv_remove(link);
554 }
555
556 trace_drv_change_vif_links(local, sdata, old_links, new_links);
557 if (local->ops->change_vif_links)
558 ret = local->ops->change_vif_links(&local->hw, &sdata->vif,
559 old_links, new_links, old);
560 trace_drv_return_int(local, ret);
561
562 if (ret)
563 return ret;
564
565 if (!local->in_reconfig && !local->resuming) {
566 for_each_set_bit(link_id, &links_to_add,
567 IEEE80211_MLD_MAX_NUM_LINKS) {
568 link = rcu_access_pointer(sdata->link[link_id]);
569
570 ieee80211_link_debugfs_drv_add(link);
571 }
572 }
573
574 return 0;
575}
576
577int drv_change_sta_links(struct ieee80211_local *local,
578 struct ieee80211_sub_if_data *sdata,
579 struct ieee80211_sta *sta,
580 u16 old_links, u16 new_links)
581{
582 struct sta_info *info = container_of(sta, struct sta_info, sta);
583 struct link_sta_info *link_sta;
584 unsigned long links_to_add;
585 unsigned long links_to_rem;
586 unsigned int link_id;
587 int ret = -EOPNOTSUPP;
588
589 might_sleep();
590 lockdep_assert_wiphy(local->hw.wiphy);
591
592 if (!check_sdata_in_driver(sdata))
593 return -EIO;
594
595 old_links &= sdata->vif.active_links;
596 new_links &= sdata->vif.active_links;
597
598 if (old_links == new_links)
599 return 0;
600
601 links_to_add = ~old_links & new_links;
602 links_to_rem = old_links & ~new_links;
603
604 for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
605 link_sta = rcu_dereference_protected(info->link[link_id],
606 lockdep_is_held(&local->hw.wiphy->mtx));
607
608 ieee80211_link_sta_debugfs_drv_remove(link_sta);
609 }
610
611 trace_drv_change_sta_links(local, sdata, sta, old_links, new_links);
612 if (local->ops->change_sta_links)
613 ret = local->ops->change_sta_links(&local->hw, &sdata->vif, sta,
614 old_links, new_links);
615 trace_drv_return_int(local, ret);
616
617 if (ret)
618 return ret;
619
620 /* during reconfig don't add it to debugfs again */
621 if (local->in_reconfig || local->resuming)
622 return 0;
623
624 for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) {
625 link_sta = rcu_dereference_protected(info->link[link_id],
626 lockdep_is_held(&local->hw.wiphy->mtx));
627 ieee80211_link_sta_debugfs_drv_add(link_sta);
628 }
629
630 return 0;
631}
632