1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24*/
25
26/* Bluetooth HCI event handling. */
27
28#include <asm/unaligned.h>
29#include <linux/crypto.h>
30#include <crypto/algapi.h>
31
32#include <net/bluetooth/bluetooth.h>
33#include <net/bluetooth/hci_core.h>
34#include <net/bluetooth/mgmt.h>
35
36#include "hci_request.h"
37#include "hci_debugfs.h"
38#include "hci_codec.h"
39#include "a2mp.h"
40#include "amp.h"
41#include "smp.h"
42#include "msft.h"
43#include "eir.h"
44
45#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
46 "\x00\x00\x00\x00\x00\x00\x00\x00"
47
48#define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
49
50/* Handle HCI Event packets */
51
52static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
53 u8 ev, size_t len)
54{
55 void *data;
56
57 data = skb_pull_data(skb, len);
58 if (!data)
59 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
60
61 return data;
62}
63
64static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
65 u16 op, size_t len)
66{
67 void *data;
68
69 data = skb_pull_data(skb, len);
70 if (!data)
71 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
72
73 return data;
74}
75
76static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
77 u8 ev, size_t len)
78{
79 void *data;
80
81 data = skb_pull_data(skb, len);
82 if (!data)
83 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
84
85 return data;
86}
87
88static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
89 struct sk_buff *skb)
90{
91 struct hci_ev_status *rp = data;
92
93 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
94
95 /* It is possible that we receive Inquiry Complete event right
96 * before we receive Inquiry Cancel Command Complete event, in
97 * which case the latter event should have status of Command
98 * Disallowed (0x0c). This should not be treated as error, since
99 * we actually achieve what Inquiry Cancel wants to achieve,
100 * which is to end the last Inquiry session.
101 */
102 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
103 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
104 rp->status = 0x00;
105 }
106
107 if (rp->status)
108 return rp->status;
109
110 clear_bit(nr: HCI_INQUIRY, addr: &hdev->flags);
111 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
112 wake_up_bit(word: &hdev->flags, bit: HCI_INQUIRY);
113
114 hci_dev_lock(hdev);
115 /* Set discovery state to stopped if we're not doing LE active
116 * scanning.
117 */
118 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
119 hdev->le_scan_type != LE_SCAN_ACTIVE)
120 hci_discovery_set_state(hdev, state: DISCOVERY_STOPPED);
121 hci_dev_unlock(hdev);
122
123 hci_conn_check_pending(hdev);
124
125 return rp->status;
126}
127
128static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
129 struct sk_buff *skb)
130{
131 struct hci_ev_status *rp = data;
132
133 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
134
135 if (rp->status)
136 return rp->status;
137
138 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
139
140 return rp->status;
141}
142
143static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
144 struct sk_buff *skb)
145{
146 struct hci_ev_status *rp = data;
147
148 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
149
150 if (rp->status)
151 return rp->status;
152
153 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
154
155 hci_conn_check_pending(hdev);
156
157 return rp->status;
158}
159
160static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
161 struct sk_buff *skb)
162{
163 struct hci_ev_status *rp = data;
164
165 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
166
167 return rp->status;
168}
169
170static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
171 struct sk_buff *skb)
172{
173 struct hci_rp_role_discovery *rp = data;
174 struct hci_conn *conn;
175
176 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
177
178 if (rp->status)
179 return rp->status;
180
181 hci_dev_lock(hdev);
182
183 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
184 if (conn)
185 conn->role = rp->role;
186
187 hci_dev_unlock(hdev);
188
189 return rp->status;
190}
191
192static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
193 struct sk_buff *skb)
194{
195 struct hci_rp_read_link_policy *rp = data;
196 struct hci_conn *conn;
197
198 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
199
200 if (rp->status)
201 return rp->status;
202
203 hci_dev_lock(hdev);
204
205 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
206 if (conn)
207 conn->link_policy = __le16_to_cpu(rp->policy);
208
209 hci_dev_unlock(hdev);
210
211 return rp->status;
212}
213
214static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
215 struct sk_buff *skb)
216{
217 struct hci_rp_write_link_policy *rp = data;
218 struct hci_conn *conn;
219 void *sent;
220
221 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
222
223 if (rp->status)
224 return rp->status;
225
226 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
227 if (!sent)
228 return rp->status;
229
230 hci_dev_lock(hdev);
231
232 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
233 if (conn)
234 conn->link_policy = get_unaligned_le16(p: sent + 2);
235
236 hci_dev_unlock(hdev);
237
238 return rp->status;
239}
240
241static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
242 struct sk_buff *skb)
243{
244 struct hci_rp_read_def_link_policy *rp = data;
245
246 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
247
248 if (rp->status)
249 return rp->status;
250
251 hdev->link_policy = __le16_to_cpu(rp->policy);
252
253 return rp->status;
254}
255
256static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
257 struct sk_buff *skb)
258{
259 struct hci_ev_status *rp = data;
260 void *sent;
261
262 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
263
264 if (rp->status)
265 return rp->status;
266
267 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
268 if (!sent)
269 return rp->status;
270
271 hdev->link_policy = get_unaligned_le16(p: sent);
272
273 return rp->status;
274}
275
276static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
277{
278 struct hci_ev_status *rp = data;
279
280 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
281
282 clear_bit(nr: HCI_RESET, addr: &hdev->flags);
283
284 if (rp->status)
285 return rp->status;
286
287 /* Reset all non-persistent flags */
288 hci_dev_clear_volatile_flags(hdev);
289
290 hci_discovery_set_state(hdev, state: DISCOVERY_STOPPED);
291
292 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
293 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
294
295 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
296 hdev->adv_data_len = 0;
297
298 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
299 hdev->scan_rsp_data_len = 0;
300
301 hdev->le_scan_type = LE_SCAN_PASSIVE;
302
303 hdev->ssp_debug_mode = 0;
304
305 hci_bdaddr_list_clear(list: &hdev->le_accept_list);
306 hci_bdaddr_list_clear(list: &hdev->le_resolv_list);
307
308 return rp->status;
309}
310
311static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
312 struct sk_buff *skb)
313{
314 struct hci_rp_read_stored_link_key *rp = data;
315 struct hci_cp_read_stored_link_key *sent;
316
317 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
318
319 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
320 if (!sent)
321 return rp->status;
322
323 if (!rp->status && sent->read_all == 0x01) {
324 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
325 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
326 }
327
328 return rp->status;
329}
330
331static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
332 struct sk_buff *skb)
333{
334 struct hci_rp_delete_stored_link_key *rp = data;
335 u16 num_keys;
336
337 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
338
339 if (rp->status)
340 return rp->status;
341
342 num_keys = le16_to_cpu(rp->num_keys);
343
344 if (num_keys <= hdev->stored_num_keys)
345 hdev->stored_num_keys -= num_keys;
346 else
347 hdev->stored_num_keys = 0;
348
349 return rp->status;
350}
351
352static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
353 struct sk_buff *skb)
354{
355 struct hci_ev_status *rp = data;
356 void *sent;
357
358 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
359
360 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
361 if (!sent)
362 return rp->status;
363
364 hci_dev_lock(hdev);
365
366 if (hci_dev_test_flag(hdev, HCI_MGMT))
367 mgmt_set_local_name_complete(hdev, name: sent, status: rp->status);
368 else if (!rp->status)
369 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
370
371 hci_dev_unlock(hdev);
372
373 return rp->status;
374}
375
376static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
377 struct sk_buff *skb)
378{
379 struct hci_rp_read_local_name *rp = data;
380
381 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
382
383 if (rp->status)
384 return rp->status;
385
386 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
387 hci_dev_test_flag(hdev, HCI_CONFIG))
388 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
389
390 return rp->status;
391}
392
393static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
394 struct sk_buff *skb)
395{
396 struct hci_ev_status *rp = data;
397 void *sent;
398
399 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
400
401 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
402 if (!sent)
403 return rp->status;
404
405 hci_dev_lock(hdev);
406
407 if (!rp->status) {
408 __u8 param = *((__u8 *) sent);
409
410 if (param == AUTH_ENABLED)
411 set_bit(nr: HCI_AUTH, addr: &hdev->flags);
412 else
413 clear_bit(nr: HCI_AUTH, addr: &hdev->flags);
414 }
415
416 if (hci_dev_test_flag(hdev, HCI_MGMT))
417 mgmt_auth_enable_complete(hdev, status: rp->status);
418
419 hci_dev_unlock(hdev);
420
421 return rp->status;
422}
423
424static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
425 struct sk_buff *skb)
426{
427 struct hci_ev_status *rp = data;
428 __u8 param;
429 void *sent;
430
431 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
432
433 if (rp->status)
434 return rp->status;
435
436 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
437 if (!sent)
438 return rp->status;
439
440 param = *((__u8 *) sent);
441
442 if (param)
443 set_bit(nr: HCI_ENCRYPT, addr: &hdev->flags);
444 else
445 clear_bit(nr: HCI_ENCRYPT, addr: &hdev->flags);
446
447 return rp->status;
448}
449
450static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
451 struct sk_buff *skb)
452{
453 struct hci_ev_status *rp = data;
454 __u8 param;
455 void *sent;
456
457 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
458
459 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
460 if (!sent)
461 return rp->status;
462
463 param = *((__u8 *) sent);
464
465 hci_dev_lock(hdev);
466
467 if (rp->status) {
468 hdev->discov_timeout = 0;
469 goto done;
470 }
471
472 if (param & SCAN_INQUIRY)
473 set_bit(nr: HCI_ISCAN, addr: &hdev->flags);
474 else
475 clear_bit(nr: HCI_ISCAN, addr: &hdev->flags);
476
477 if (param & SCAN_PAGE)
478 set_bit(nr: HCI_PSCAN, addr: &hdev->flags);
479 else
480 clear_bit(nr: HCI_PSCAN, addr: &hdev->flags);
481
482done:
483 hci_dev_unlock(hdev);
484
485 return rp->status;
486}
487
488static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
489 struct sk_buff *skb)
490{
491 struct hci_ev_status *rp = data;
492 struct hci_cp_set_event_filter *cp;
493 void *sent;
494
495 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
496
497 if (rp->status)
498 return rp->status;
499
500 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
501 if (!sent)
502 return rp->status;
503
504 cp = (struct hci_cp_set_event_filter *)sent;
505
506 if (cp->flt_type == HCI_FLT_CLEAR_ALL)
507 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
508 else
509 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
510
511 return rp->status;
512}
513
514static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
515 struct sk_buff *skb)
516{
517 struct hci_rp_read_class_of_dev *rp = data;
518
519 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
520
521 if (rp->status)
522 return rp->status;
523
524 memcpy(hdev->dev_class, rp->dev_class, 3);
525
526 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
527 hdev->dev_class[1], hdev->dev_class[0]);
528
529 return rp->status;
530}
531
532static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
533 struct sk_buff *skb)
534{
535 struct hci_ev_status *rp = data;
536 void *sent;
537
538 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
539
540 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
541 if (!sent)
542 return rp->status;
543
544 hci_dev_lock(hdev);
545
546 if (!rp->status)
547 memcpy(hdev->dev_class, sent, 3);
548
549 if (hci_dev_test_flag(hdev, HCI_MGMT))
550 mgmt_set_class_of_dev_complete(hdev, dev_class: sent, status: rp->status);
551
552 hci_dev_unlock(hdev);
553
554 return rp->status;
555}
556
557static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
558 struct sk_buff *skb)
559{
560 struct hci_rp_read_voice_setting *rp = data;
561 __u16 setting;
562
563 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
564
565 if (rp->status)
566 return rp->status;
567
568 setting = __le16_to_cpu(rp->voice_setting);
569
570 if (hdev->voice_setting == setting)
571 return rp->status;
572
573 hdev->voice_setting = setting;
574
575 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
576
577 if (hdev->notify)
578 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
579
580 return rp->status;
581}
582
583static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
584 struct sk_buff *skb)
585{
586 struct hci_ev_status *rp = data;
587 __u16 setting;
588 void *sent;
589
590 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
591
592 if (rp->status)
593 return rp->status;
594
595 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
596 if (!sent)
597 return rp->status;
598
599 setting = get_unaligned_le16(p: sent);
600
601 if (hdev->voice_setting == setting)
602 return rp->status;
603
604 hdev->voice_setting = setting;
605
606 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
607
608 if (hdev->notify)
609 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
610
611 return rp->status;
612}
613
614static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
615 struct sk_buff *skb)
616{
617 struct hci_rp_read_num_supported_iac *rp = data;
618
619 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
620
621 if (rp->status)
622 return rp->status;
623
624 hdev->num_iac = rp->num_iac;
625
626 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
627
628 return rp->status;
629}
630
631static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
632 struct sk_buff *skb)
633{
634 struct hci_ev_status *rp = data;
635 struct hci_cp_write_ssp_mode *sent;
636
637 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
638
639 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
640 if (!sent)
641 return rp->status;
642
643 hci_dev_lock(hdev);
644
645 if (!rp->status) {
646 if (sent->mode)
647 hdev->features[1][0] |= LMP_HOST_SSP;
648 else
649 hdev->features[1][0] &= ~LMP_HOST_SSP;
650 }
651
652 if (!rp->status) {
653 if (sent->mode)
654 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
655 else
656 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
657 }
658
659 hci_dev_unlock(hdev);
660
661 return rp->status;
662}
663
664static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
665 struct sk_buff *skb)
666{
667 struct hci_ev_status *rp = data;
668 struct hci_cp_write_sc_support *sent;
669
670 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
671
672 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
673 if (!sent)
674 return rp->status;
675
676 hci_dev_lock(hdev);
677
678 if (!rp->status) {
679 if (sent->support)
680 hdev->features[1][0] |= LMP_HOST_SC;
681 else
682 hdev->features[1][0] &= ~LMP_HOST_SC;
683 }
684
685 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
686 if (sent->support)
687 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
688 else
689 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
690 }
691
692 hci_dev_unlock(hdev);
693
694 return rp->status;
695}
696
697static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
698 struct sk_buff *skb)
699{
700 struct hci_rp_read_local_version *rp = data;
701
702 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
703
704 if (rp->status)
705 return rp->status;
706
707 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
708 hci_dev_test_flag(hdev, HCI_CONFIG)) {
709 hdev->hci_ver = rp->hci_ver;
710 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
711 hdev->lmp_ver = rp->lmp_ver;
712 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
713 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
714 }
715
716 return rp->status;
717}
718
719static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
720 struct sk_buff *skb)
721{
722 struct hci_rp_read_enc_key_size *rp = data;
723 struct hci_conn *conn;
724 u16 handle;
725 u8 status = rp->status;
726
727 bt_dev_dbg(hdev, "status 0x%2.2x", status);
728
729 handle = le16_to_cpu(rp->handle);
730
731 hci_dev_lock(hdev);
732
733 conn = hci_conn_hash_lookup_handle(hdev, handle);
734 if (!conn) {
735 status = 0xFF;
736 goto done;
737 }
738
739 /* While unexpected, the read_enc_key_size command may fail. The most
740 * secure approach is to then assume the key size is 0 to force a
741 * disconnection.
742 */
743 if (status) {
744 bt_dev_err(hdev, "failed to read key size for handle %u",
745 handle);
746 conn->enc_key_size = 0;
747 } else {
748 conn->enc_key_size = rp->key_size;
749 status = 0;
750 }
751
752 hci_encrypt_cfm(conn, status: 0);
753
754done:
755 hci_dev_unlock(hdev);
756
757 return status;
758}
759
760static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
761 struct sk_buff *skb)
762{
763 struct hci_rp_read_local_commands *rp = data;
764
765 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
766
767 if (rp->status)
768 return rp->status;
769
770 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
771 hci_dev_test_flag(hdev, HCI_CONFIG))
772 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
773
774 return rp->status;
775}
776
777static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
778 struct sk_buff *skb)
779{
780 struct hci_rp_read_auth_payload_to *rp = data;
781 struct hci_conn *conn;
782
783 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
784
785 if (rp->status)
786 return rp->status;
787
788 hci_dev_lock(hdev);
789
790 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
791 if (conn)
792 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
793
794 hci_dev_unlock(hdev);
795
796 return rp->status;
797}
798
799static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
800 struct sk_buff *skb)
801{
802 struct hci_rp_write_auth_payload_to *rp = data;
803 struct hci_conn *conn;
804 void *sent;
805
806 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
807
808 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
809 if (!sent)
810 return rp->status;
811
812 hci_dev_lock(hdev);
813
814 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
815 if (!conn) {
816 rp->status = 0xff;
817 goto unlock;
818 }
819
820 if (!rp->status)
821 conn->auth_payload_timeout = get_unaligned_le16(p: sent + 2);
822
823 hci_encrypt_cfm(conn, status: 0);
824
825unlock:
826 hci_dev_unlock(hdev);
827
828 return rp->status;
829}
830
831static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
832 struct sk_buff *skb)
833{
834 struct hci_rp_read_local_features *rp = data;
835
836 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
837
838 if (rp->status)
839 return rp->status;
840
841 memcpy(hdev->features, rp->features, 8);
842
843 /* Adjust default settings according to features
844 * supported by device. */
845
846 if (hdev->features[0][0] & LMP_3SLOT)
847 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
848
849 if (hdev->features[0][0] & LMP_5SLOT)
850 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
851
852 if (hdev->features[0][1] & LMP_HV2) {
853 hdev->pkt_type |= (HCI_HV2);
854 hdev->esco_type |= (ESCO_HV2);
855 }
856
857 if (hdev->features[0][1] & LMP_HV3) {
858 hdev->pkt_type |= (HCI_HV3);
859 hdev->esco_type |= (ESCO_HV3);
860 }
861
862 if (lmp_esco_capable(hdev))
863 hdev->esco_type |= (ESCO_EV3);
864
865 if (hdev->features[0][4] & LMP_EV4)
866 hdev->esco_type |= (ESCO_EV4);
867
868 if (hdev->features[0][4] & LMP_EV5)
869 hdev->esco_type |= (ESCO_EV5);
870
871 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
872 hdev->esco_type |= (ESCO_2EV3);
873
874 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
875 hdev->esco_type |= (ESCO_3EV3);
876
877 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
878 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
879
880 return rp->status;
881}
882
883static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
884 struct sk_buff *skb)
885{
886 struct hci_rp_read_local_ext_features *rp = data;
887
888 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
889
890 if (rp->status)
891 return rp->status;
892
893 if (hdev->max_page < rp->max_page) {
894 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
895 &hdev->quirks))
896 bt_dev_warn(hdev, "broken local ext features page 2");
897 else
898 hdev->max_page = rp->max_page;
899 }
900
901 if (rp->page < HCI_MAX_PAGES)
902 memcpy(hdev->features[rp->page], rp->features, 8);
903
904 return rp->status;
905}
906
907static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
908 struct sk_buff *skb)
909{
910 struct hci_rp_read_flow_control_mode *rp = data;
911
912 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
913
914 if (rp->status)
915 return rp->status;
916
917 hdev->flow_ctl_mode = rp->mode;
918
919 return rp->status;
920}
921
922static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
923 struct sk_buff *skb)
924{
925 struct hci_rp_read_buffer_size *rp = data;
926
927 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
928
929 if (rp->status)
930 return rp->status;
931
932 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
933 hdev->sco_mtu = rp->sco_mtu;
934 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
935 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
936
937 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
938 hdev->sco_mtu = 64;
939 hdev->sco_pkts = 8;
940 }
941
942 hdev->acl_cnt = hdev->acl_pkts;
943 hdev->sco_cnt = hdev->sco_pkts;
944
945 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
946 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
947
948 return rp->status;
949}
950
951static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
952 struct sk_buff *skb)
953{
954 struct hci_rp_read_bd_addr *rp = data;
955
956 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
957
958 if (rp->status)
959 return rp->status;
960
961 if (test_bit(HCI_INIT, &hdev->flags))
962 bacpy(dst: &hdev->bdaddr, src: &rp->bdaddr);
963
964 if (hci_dev_test_flag(hdev, HCI_SETUP))
965 bacpy(dst: &hdev->setup_addr, src: &rp->bdaddr);
966
967 return rp->status;
968}
969
970static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
971 struct sk_buff *skb)
972{
973 struct hci_rp_read_local_pairing_opts *rp = data;
974
975 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
976
977 if (rp->status)
978 return rp->status;
979
980 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
981 hci_dev_test_flag(hdev, HCI_CONFIG)) {
982 hdev->pairing_opts = rp->pairing_opts;
983 hdev->max_enc_key_size = rp->max_key_size;
984 }
985
986 return rp->status;
987}
988
989static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
990 struct sk_buff *skb)
991{
992 struct hci_rp_read_page_scan_activity *rp = data;
993
994 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
995
996 if (rp->status)
997 return rp->status;
998
999 if (test_bit(HCI_INIT, &hdev->flags)) {
1000 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1001 hdev->page_scan_window = __le16_to_cpu(rp->window);
1002 }
1003
1004 return rp->status;
1005}
1006
1007static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1008 struct sk_buff *skb)
1009{
1010 struct hci_ev_status *rp = data;
1011 struct hci_cp_write_page_scan_activity *sent;
1012
1013 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1014
1015 if (rp->status)
1016 return rp->status;
1017
1018 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1019 if (!sent)
1020 return rp->status;
1021
1022 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1023 hdev->page_scan_window = __le16_to_cpu(sent->window);
1024
1025 return rp->status;
1026}
1027
1028static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1029 struct sk_buff *skb)
1030{
1031 struct hci_rp_read_page_scan_type *rp = data;
1032
1033 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1034
1035 if (rp->status)
1036 return rp->status;
1037
1038 if (test_bit(HCI_INIT, &hdev->flags))
1039 hdev->page_scan_type = rp->type;
1040
1041 return rp->status;
1042}
1043
1044static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1045 struct sk_buff *skb)
1046{
1047 struct hci_ev_status *rp = data;
1048 u8 *type;
1049
1050 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1051
1052 if (rp->status)
1053 return rp->status;
1054
1055 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1056 if (type)
1057 hdev->page_scan_type = *type;
1058
1059 return rp->status;
1060}
1061
1062static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1063 struct sk_buff *skb)
1064{
1065 struct hci_rp_read_data_block_size *rp = data;
1066
1067 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1068
1069 if (rp->status)
1070 return rp->status;
1071
1072 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1073 hdev->block_len = __le16_to_cpu(rp->block_len);
1074 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1075
1076 hdev->block_cnt = hdev->num_blocks;
1077
1078 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1079 hdev->block_cnt, hdev->block_len);
1080
1081 return rp->status;
1082}
1083
1084static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1085 struct sk_buff *skb)
1086{
1087 struct hci_rp_read_clock *rp = data;
1088 struct hci_cp_read_clock *cp;
1089 struct hci_conn *conn;
1090
1091 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1092
1093 if (rp->status)
1094 return rp->status;
1095
1096 hci_dev_lock(hdev);
1097
1098 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1099 if (!cp)
1100 goto unlock;
1101
1102 if (cp->which == 0x00) {
1103 hdev->clock = le32_to_cpu(rp->clock);
1104 goto unlock;
1105 }
1106
1107 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1108 if (conn) {
1109 conn->clock = le32_to_cpu(rp->clock);
1110 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1111 }
1112
1113unlock:
1114 hci_dev_unlock(hdev);
1115 return rp->status;
1116}
1117
1118static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1119 struct sk_buff *skb)
1120{
1121 struct hci_rp_read_local_amp_info *rp = data;
1122
1123 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1124
1125 if (rp->status)
1126 return rp->status;
1127
1128 hdev->amp_status = rp->amp_status;
1129 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1130 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1131 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1132 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1133 hdev->amp_type = rp->amp_type;
1134 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1135 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1136 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1137 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1138
1139 return rp->status;
1140}
1141
1142static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1143 struct sk_buff *skb)
1144{
1145 struct hci_rp_read_inq_rsp_tx_power *rp = data;
1146
1147 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1148
1149 if (rp->status)
1150 return rp->status;
1151
1152 hdev->inq_tx_power = rp->tx_power;
1153
1154 return rp->status;
1155}
1156
1157static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1158 struct sk_buff *skb)
1159{
1160 struct hci_rp_read_def_err_data_reporting *rp = data;
1161
1162 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1163
1164 if (rp->status)
1165 return rp->status;
1166
1167 hdev->err_data_reporting = rp->err_data_reporting;
1168
1169 return rp->status;
1170}
1171
1172static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1173 struct sk_buff *skb)
1174{
1175 struct hci_ev_status *rp = data;
1176 struct hci_cp_write_def_err_data_reporting *cp;
1177
1178 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1179
1180 if (rp->status)
1181 return rp->status;
1182
1183 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1184 if (!cp)
1185 return rp->status;
1186
1187 hdev->err_data_reporting = cp->err_data_reporting;
1188
1189 return rp->status;
1190}
1191
1192static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1193 struct sk_buff *skb)
1194{
1195 struct hci_rp_pin_code_reply *rp = data;
1196 struct hci_cp_pin_code_reply *cp;
1197 struct hci_conn *conn;
1198
1199 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1200
1201 hci_dev_lock(hdev);
1202
1203 if (hci_dev_test_flag(hdev, HCI_MGMT))
1204 mgmt_pin_code_reply_complete(hdev, bdaddr: &rp->bdaddr, status: rp->status);
1205
1206 if (rp->status)
1207 goto unlock;
1208
1209 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1210 if (!cp)
1211 goto unlock;
1212
1213 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &cp->bdaddr);
1214 if (conn)
1215 conn->pin_length = cp->pin_len;
1216
1217unlock:
1218 hci_dev_unlock(hdev);
1219 return rp->status;
1220}
1221
1222static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1223 struct sk_buff *skb)
1224{
1225 struct hci_rp_pin_code_neg_reply *rp = data;
1226
1227 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1228
1229 hci_dev_lock(hdev);
1230
1231 if (hci_dev_test_flag(hdev, HCI_MGMT))
1232 mgmt_pin_code_neg_reply_complete(hdev, bdaddr: &rp->bdaddr,
1233 status: rp->status);
1234
1235 hci_dev_unlock(hdev);
1236
1237 return rp->status;
1238}
1239
1240static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1241 struct sk_buff *skb)
1242{
1243 struct hci_rp_le_read_buffer_size *rp = data;
1244
1245 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1246
1247 if (rp->status)
1248 return rp->status;
1249
1250 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1251 hdev->le_pkts = rp->le_max_pkt;
1252
1253 hdev->le_cnt = hdev->le_pkts;
1254
1255 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1256
1257 return rp->status;
1258}
1259
1260static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1261 struct sk_buff *skb)
1262{
1263 struct hci_rp_le_read_local_features *rp = data;
1264
1265 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1266
1267 if (rp->status)
1268 return rp->status;
1269
1270 memcpy(hdev->le_features, rp->features, 8);
1271
1272 return rp->status;
1273}
1274
1275static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1276 struct sk_buff *skb)
1277{
1278 struct hci_rp_le_read_adv_tx_power *rp = data;
1279
1280 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1281
1282 if (rp->status)
1283 return rp->status;
1284
1285 hdev->adv_tx_power = rp->tx_power;
1286
1287 return rp->status;
1288}
1289
1290static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1291 struct sk_buff *skb)
1292{
1293 struct hci_rp_user_confirm_reply *rp = data;
1294
1295 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1296
1297 hci_dev_lock(hdev);
1298
1299 if (hci_dev_test_flag(hdev, HCI_MGMT))
1300 mgmt_user_confirm_reply_complete(hdev, bdaddr: &rp->bdaddr, ACL_LINK, addr_type: 0,
1301 status: rp->status);
1302
1303 hci_dev_unlock(hdev);
1304
1305 return rp->status;
1306}
1307
1308static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1309 struct sk_buff *skb)
1310{
1311 struct hci_rp_user_confirm_reply *rp = data;
1312
1313 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1314
1315 hci_dev_lock(hdev);
1316
1317 if (hci_dev_test_flag(hdev, HCI_MGMT))
1318 mgmt_user_confirm_neg_reply_complete(hdev, bdaddr: &rp->bdaddr,
1319 ACL_LINK, addr_type: 0, status: rp->status);
1320
1321 hci_dev_unlock(hdev);
1322
1323 return rp->status;
1324}
1325
1326static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1327 struct sk_buff *skb)
1328{
1329 struct hci_rp_user_confirm_reply *rp = data;
1330
1331 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1332
1333 hci_dev_lock(hdev);
1334
1335 if (hci_dev_test_flag(hdev, HCI_MGMT))
1336 mgmt_user_passkey_reply_complete(hdev, bdaddr: &rp->bdaddr, ACL_LINK,
1337 addr_type: 0, status: rp->status);
1338
1339 hci_dev_unlock(hdev);
1340
1341 return rp->status;
1342}
1343
1344static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1345 struct sk_buff *skb)
1346{
1347 struct hci_rp_user_confirm_reply *rp = data;
1348
1349 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1350
1351 hci_dev_lock(hdev);
1352
1353 if (hci_dev_test_flag(hdev, HCI_MGMT))
1354 mgmt_user_passkey_neg_reply_complete(hdev, bdaddr: &rp->bdaddr,
1355 ACL_LINK, addr_type: 0, status: rp->status);
1356
1357 hci_dev_unlock(hdev);
1358
1359 return rp->status;
1360}
1361
1362static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1363 struct sk_buff *skb)
1364{
1365 struct hci_rp_read_local_oob_data *rp = data;
1366
1367 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1368
1369 return rp->status;
1370}
1371
1372static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1373 struct sk_buff *skb)
1374{
1375 struct hci_rp_read_local_oob_ext_data *rp = data;
1376
1377 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1378
1379 return rp->status;
1380}
1381
1382static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1383 struct sk_buff *skb)
1384{
1385 struct hci_ev_status *rp = data;
1386 bdaddr_t *sent;
1387
1388 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1389
1390 if (rp->status)
1391 return rp->status;
1392
1393 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1394 if (!sent)
1395 return rp->status;
1396
1397 hci_dev_lock(hdev);
1398
1399 bacpy(dst: &hdev->random_addr, src: sent);
1400
1401 if (!bacmp(ba1: &hdev->rpa, ba2: sent)) {
1402 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1403 queue_delayed_work(wq: hdev->workqueue, dwork: &hdev->rpa_expired,
1404 secs_to_jiffies(hdev->rpa_timeout));
1405 }
1406
1407 hci_dev_unlock(hdev);
1408
1409 return rp->status;
1410}
1411
1412static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1413 struct sk_buff *skb)
1414{
1415 struct hci_ev_status *rp = data;
1416 struct hci_cp_le_set_default_phy *cp;
1417
1418 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1419
1420 if (rp->status)
1421 return rp->status;
1422
1423 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1424 if (!cp)
1425 return rp->status;
1426
1427 hci_dev_lock(hdev);
1428
1429 hdev->le_tx_def_phys = cp->tx_phys;
1430 hdev->le_rx_def_phys = cp->rx_phys;
1431
1432 hci_dev_unlock(hdev);
1433
1434 return rp->status;
1435}
1436
1437static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1438 struct sk_buff *skb)
1439{
1440 struct hci_ev_status *rp = data;
1441 struct hci_cp_le_set_adv_set_rand_addr *cp;
1442 struct adv_info *adv;
1443
1444 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1445
1446 if (rp->status)
1447 return rp->status;
1448
1449 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1450 /* Update only in case the adv instance since handle 0x00 shall be using
1451 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1452 * non-extended adverting.
1453 */
1454 if (!cp || !cp->handle)
1455 return rp->status;
1456
1457 hci_dev_lock(hdev);
1458
1459 adv = hci_find_adv_instance(hdev, instance: cp->handle);
1460 if (adv) {
1461 bacpy(dst: &adv->random_addr, src: &cp->bdaddr);
1462 if (!bacmp(ba1: &hdev->rpa, ba2: &cp->bdaddr)) {
1463 adv->rpa_expired = false;
1464 queue_delayed_work(wq: hdev->workqueue,
1465 dwork: &adv->rpa_expired_cb,
1466 secs_to_jiffies(hdev->rpa_timeout));
1467 }
1468 }
1469
1470 hci_dev_unlock(hdev);
1471
1472 return rp->status;
1473}
1474
1475static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1476 struct sk_buff *skb)
1477{
1478 struct hci_ev_status *rp = data;
1479 u8 *instance;
1480 int err;
1481
1482 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1483
1484 if (rp->status)
1485 return rp->status;
1486
1487 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1488 if (!instance)
1489 return rp->status;
1490
1491 hci_dev_lock(hdev);
1492
1493 err = hci_remove_adv_instance(hdev, instance: *instance);
1494 if (!err)
1495 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1496 instance: *instance);
1497
1498 hci_dev_unlock(hdev);
1499
1500 return rp->status;
1501}
1502
1503static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1504 struct sk_buff *skb)
1505{
1506 struct hci_ev_status *rp = data;
1507 struct adv_info *adv, *n;
1508 int err;
1509
1510 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1511
1512 if (rp->status)
1513 return rp->status;
1514
1515 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1516 return rp->status;
1517
1518 hci_dev_lock(hdev);
1519
1520 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1521 u8 instance = adv->instance;
1522
1523 err = hci_remove_adv_instance(hdev, instance);
1524 if (!err)
1525 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1526 hdev, instance);
1527 }
1528
1529 hci_dev_unlock(hdev);
1530
1531 return rp->status;
1532}
1533
1534static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1535 struct sk_buff *skb)
1536{
1537 struct hci_rp_le_read_transmit_power *rp = data;
1538
1539 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1540
1541 if (rp->status)
1542 return rp->status;
1543
1544 hdev->min_le_tx_power = rp->min_le_tx_power;
1545 hdev->max_le_tx_power = rp->max_le_tx_power;
1546
1547 return rp->status;
1548}
1549
1550static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1551 struct sk_buff *skb)
1552{
1553 struct hci_ev_status *rp = data;
1554 struct hci_cp_le_set_privacy_mode *cp;
1555 struct hci_conn_params *params;
1556
1557 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1558
1559 if (rp->status)
1560 return rp->status;
1561
1562 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1563 if (!cp)
1564 return rp->status;
1565
1566 hci_dev_lock(hdev);
1567
1568 params = hci_conn_params_lookup(hdev, addr: &cp->bdaddr, addr_type: cp->bdaddr_type);
1569 if (params)
1570 WRITE_ONCE(params->privacy_mode, cp->mode);
1571
1572 hci_dev_unlock(hdev);
1573
1574 return rp->status;
1575}
1576
1577static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1578 struct sk_buff *skb)
1579{
1580 struct hci_ev_status *rp = data;
1581 __u8 *sent;
1582
1583 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1584
1585 if (rp->status)
1586 return rp->status;
1587
1588 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1589 if (!sent)
1590 return rp->status;
1591
1592 hci_dev_lock(hdev);
1593
1594 /* If we're doing connection initiation as peripheral. Set a
1595 * timeout in case something goes wrong.
1596 */
1597 if (*sent) {
1598 struct hci_conn *conn;
1599
1600 hci_dev_set_flag(hdev, HCI_LE_ADV);
1601
1602 conn = hci_lookup_le_connect(hdev);
1603 if (conn)
1604 queue_delayed_work(wq: hdev->workqueue,
1605 dwork: &conn->le_conn_timeout,
1606 delay: conn->conn_timeout);
1607 } else {
1608 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1609 }
1610
1611 hci_dev_unlock(hdev);
1612
1613 return rp->status;
1614}
1615
1616static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1617 struct sk_buff *skb)
1618{
1619 struct hci_cp_le_set_ext_adv_enable *cp;
1620 struct hci_cp_ext_adv_set *set;
1621 struct adv_info *adv = NULL, *n;
1622 struct hci_ev_status *rp = data;
1623
1624 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1625
1626 if (rp->status)
1627 return rp->status;
1628
1629 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1630 if (!cp)
1631 return rp->status;
1632
1633 set = (void *)cp->data;
1634
1635 hci_dev_lock(hdev);
1636
1637 if (cp->num_of_sets)
1638 adv = hci_find_adv_instance(hdev, instance: set->handle);
1639
1640 if (cp->enable) {
1641 struct hci_conn *conn;
1642
1643 hci_dev_set_flag(hdev, HCI_LE_ADV);
1644
1645 if (adv && !adv->periodic)
1646 adv->enabled = true;
1647
1648 conn = hci_lookup_le_connect(hdev);
1649 if (conn)
1650 queue_delayed_work(wq: hdev->workqueue,
1651 dwork: &conn->le_conn_timeout,
1652 delay: conn->conn_timeout);
1653 } else {
1654 if (cp->num_of_sets) {
1655 if (adv)
1656 adv->enabled = false;
1657
1658 /* If just one instance was disabled check if there are
1659 * any other instance enabled before clearing HCI_LE_ADV
1660 */
1661 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1662 list) {
1663 if (adv->enabled)
1664 goto unlock;
1665 }
1666 } else {
1667 /* All instances shall be considered disabled */
1668 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1669 list)
1670 adv->enabled = false;
1671 }
1672
1673 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1674 }
1675
1676unlock:
1677 hci_dev_unlock(hdev);
1678 return rp->status;
1679}
1680
1681static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1682 struct sk_buff *skb)
1683{
1684 struct hci_cp_le_set_scan_param *cp;
1685 struct hci_ev_status *rp = data;
1686
1687 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1688
1689 if (rp->status)
1690 return rp->status;
1691
1692 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1693 if (!cp)
1694 return rp->status;
1695
1696 hci_dev_lock(hdev);
1697
1698 hdev->le_scan_type = cp->type;
1699
1700 hci_dev_unlock(hdev);
1701
1702 return rp->status;
1703}
1704
1705static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1706 struct sk_buff *skb)
1707{
1708 struct hci_cp_le_set_ext_scan_params *cp;
1709 struct hci_ev_status *rp = data;
1710 struct hci_cp_le_scan_phy_params *phy_param;
1711
1712 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1713
1714 if (rp->status)
1715 return rp->status;
1716
1717 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1718 if (!cp)
1719 return rp->status;
1720
1721 phy_param = (void *)cp->data;
1722
1723 hci_dev_lock(hdev);
1724
1725 hdev->le_scan_type = phy_param->type;
1726
1727 hci_dev_unlock(hdev);
1728
1729 return rp->status;
1730}
1731
1732static bool has_pending_adv_report(struct hci_dev *hdev)
1733{
1734 struct discovery_state *d = &hdev->discovery;
1735
1736 return bacmp(ba1: &d->last_adv_addr, BDADDR_ANY);
1737}
1738
1739static void clear_pending_adv_report(struct hci_dev *hdev)
1740{
1741 struct discovery_state *d = &hdev->discovery;
1742
1743 bacpy(dst: &d->last_adv_addr, BDADDR_ANY);
1744 d->last_adv_data_len = 0;
1745}
1746
1747static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1748 u8 bdaddr_type, s8 rssi, u32 flags,
1749 u8 *data, u8 len)
1750{
1751 struct discovery_state *d = &hdev->discovery;
1752
1753 if (len > max_adv_len(hdev))
1754 return;
1755
1756 bacpy(dst: &d->last_adv_addr, src: bdaddr);
1757 d->last_adv_addr_type = bdaddr_type;
1758 d->last_adv_rssi = rssi;
1759 d->last_adv_flags = flags;
1760 memcpy(d->last_adv_data, data, len);
1761 d->last_adv_data_len = len;
1762}
1763
1764static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1765{
1766 hci_dev_lock(hdev);
1767
1768 switch (enable) {
1769 case LE_SCAN_ENABLE:
1770 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1771 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1772 clear_pending_adv_report(hdev);
1773 if (hci_dev_test_flag(hdev, HCI_MESH))
1774 hci_discovery_set_state(hdev, state: DISCOVERY_FINDING);
1775 break;
1776
1777 case LE_SCAN_DISABLE:
1778 /* We do this here instead of when setting DISCOVERY_STOPPED
1779 * since the latter would potentially require waiting for
1780 * inquiry to stop too.
1781 */
1782 if (has_pending_adv_report(hdev)) {
1783 struct discovery_state *d = &hdev->discovery;
1784
1785 mgmt_device_found(hdev, bdaddr: &d->last_adv_addr, LE_LINK,
1786 addr_type: d->last_adv_addr_type, NULL,
1787 rssi: d->last_adv_rssi, flags: d->last_adv_flags,
1788 eir: d->last_adv_data,
1789 eir_len: d->last_adv_data_len, NULL, scan_rsp_len: 0, instant: 0);
1790 }
1791
1792 /* Cancel this timer so that we don't try to disable scanning
1793 * when it's already disabled.
1794 */
1795 cancel_delayed_work(dwork: &hdev->le_scan_disable);
1796
1797 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1798
1799 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1800 * interrupted scanning due to a connect request. Mark
1801 * therefore discovery as stopped.
1802 */
1803 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1804 hci_discovery_set_state(hdev, state: DISCOVERY_STOPPED);
1805 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1806 hdev->discovery.state == DISCOVERY_FINDING)
1807 queue_work(wq: hdev->workqueue, work: &hdev->reenable_adv_work);
1808
1809 break;
1810
1811 default:
1812 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1813 enable);
1814 break;
1815 }
1816
1817 hci_dev_unlock(hdev);
1818}
1819
1820static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1821 struct sk_buff *skb)
1822{
1823 struct hci_cp_le_set_scan_enable *cp;
1824 struct hci_ev_status *rp = data;
1825
1826 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1827
1828 if (rp->status)
1829 return rp->status;
1830
1831 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1832 if (!cp)
1833 return rp->status;
1834
1835 le_set_scan_enable_complete(hdev, enable: cp->enable);
1836
1837 return rp->status;
1838}
1839
1840static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1841 struct sk_buff *skb)
1842{
1843 struct hci_cp_le_set_ext_scan_enable *cp;
1844 struct hci_ev_status *rp = data;
1845
1846 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1847
1848 if (rp->status)
1849 return rp->status;
1850
1851 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1852 if (!cp)
1853 return rp->status;
1854
1855 le_set_scan_enable_complete(hdev, enable: cp->enable);
1856
1857 return rp->status;
1858}
1859
1860static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1861 struct sk_buff *skb)
1862{
1863 struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1864
1865 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1866 rp->num_of_sets);
1867
1868 if (rp->status)
1869 return rp->status;
1870
1871 hdev->le_num_of_adv_sets = rp->num_of_sets;
1872
1873 return rp->status;
1874}
1875
1876static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1877 struct sk_buff *skb)
1878{
1879 struct hci_rp_le_read_accept_list_size *rp = data;
1880
1881 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1882
1883 if (rp->status)
1884 return rp->status;
1885
1886 hdev->le_accept_list_size = rp->size;
1887
1888 return rp->status;
1889}
1890
1891static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1892 struct sk_buff *skb)
1893{
1894 struct hci_ev_status *rp = data;
1895
1896 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1897
1898 if (rp->status)
1899 return rp->status;
1900
1901 hci_dev_lock(hdev);
1902 hci_bdaddr_list_clear(list: &hdev->le_accept_list);
1903 hci_dev_unlock(hdev);
1904
1905 return rp->status;
1906}
1907
1908static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1909 struct sk_buff *skb)
1910{
1911 struct hci_cp_le_add_to_accept_list *sent;
1912 struct hci_ev_status *rp = data;
1913
1914 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1915
1916 if (rp->status)
1917 return rp->status;
1918
1919 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1920 if (!sent)
1921 return rp->status;
1922
1923 hci_dev_lock(hdev);
1924 hci_bdaddr_list_add(list: &hdev->le_accept_list, bdaddr: &sent->bdaddr,
1925 type: sent->bdaddr_type);
1926 hci_dev_unlock(hdev);
1927
1928 return rp->status;
1929}
1930
1931static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1932 struct sk_buff *skb)
1933{
1934 struct hci_cp_le_del_from_accept_list *sent;
1935 struct hci_ev_status *rp = data;
1936
1937 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1938
1939 if (rp->status)
1940 return rp->status;
1941
1942 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1943 if (!sent)
1944 return rp->status;
1945
1946 hci_dev_lock(hdev);
1947 hci_bdaddr_list_del(list: &hdev->le_accept_list, bdaddr: &sent->bdaddr,
1948 type: sent->bdaddr_type);
1949 hci_dev_unlock(hdev);
1950
1951 return rp->status;
1952}
1953
1954static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1955 struct sk_buff *skb)
1956{
1957 struct hci_rp_le_read_supported_states *rp = data;
1958
1959 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1960
1961 if (rp->status)
1962 return rp->status;
1963
1964 memcpy(hdev->le_states, rp->le_states, 8);
1965
1966 return rp->status;
1967}
1968
1969static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1970 struct sk_buff *skb)
1971{
1972 struct hci_rp_le_read_def_data_len *rp = data;
1973
1974 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1975
1976 if (rp->status)
1977 return rp->status;
1978
1979 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1980 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1981
1982 return rp->status;
1983}
1984
1985static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1986 struct sk_buff *skb)
1987{
1988 struct hci_cp_le_write_def_data_len *sent;
1989 struct hci_ev_status *rp = data;
1990
1991 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1992
1993 if (rp->status)
1994 return rp->status;
1995
1996 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1997 if (!sent)
1998 return rp->status;
1999
2000 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2001 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2002
2003 return rp->status;
2004}
2005
2006static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2007 struct sk_buff *skb)
2008{
2009 struct hci_cp_le_add_to_resolv_list *sent;
2010 struct hci_ev_status *rp = data;
2011
2012 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2013
2014 if (rp->status)
2015 return rp->status;
2016
2017 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2018 if (!sent)
2019 return rp->status;
2020
2021 hci_dev_lock(hdev);
2022 hci_bdaddr_list_add_with_irk(list: &hdev->le_resolv_list, bdaddr: &sent->bdaddr,
2023 type: sent->bdaddr_type, peer_irk: sent->peer_irk,
2024 local_irk: sent->local_irk);
2025 hci_dev_unlock(hdev);
2026
2027 return rp->status;
2028}
2029
2030static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2031 struct sk_buff *skb)
2032{
2033 struct hci_cp_le_del_from_resolv_list *sent;
2034 struct hci_ev_status *rp = data;
2035
2036 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2037
2038 if (rp->status)
2039 return rp->status;
2040
2041 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2042 if (!sent)
2043 return rp->status;
2044
2045 hci_dev_lock(hdev);
2046 hci_bdaddr_list_del_with_irk(list: &hdev->le_resolv_list, bdaddr: &sent->bdaddr,
2047 type: sent->bdaddr_type);
2048 hci_dev_unlock(hdev);
2049
2050 return rp->status;
2051}
2052
2053static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2054 struct sk_buff *skb)
2055{
2056 struct hci_ev_status *rp = data;
2057
2058 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2059
2060 if (rp->status)
2061 return rp->status;
2062
2063 hci_dev_lock(hdev);
2064 hci_bdaddr_list_clear(list: &hdev->le_resolv_list);
2065 hci_dev_unlock(hdev);
2066
2067 return rp->status;
2068}
2069
2070static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2071 struct sk_buff *skb)
2072{
2073 struct hci_rp_le_read_resolv_list_size *rp = data;
2074
2075 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2076
2077 if (rp->status)
2078 return rp->status;
2079
2080 hdev->le_resolv_list_size = rp->size;
2081
2082 return rp->status;
2083}
2084
2085static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2086 struct sk_buff *skb)
2087{
2088 struct hci_ev_status *rp = data;
2089 __u8 *sent;
2090
2091 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2092
2093 if (rp->status)
2094 return rp->status;
2095
2096 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2097 if (!sent)
2098 return rp->status;
2099
2100 hci_dev_lock(hdev);
2101
2102 if (*sent)
2103 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2104 else
2105 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2106
2107 hci_dev_unlock(hdev);
2108
2109 return rp->status;
2110}
2111
2112static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2113 struct sk_buff *skb)
2114{
2115 struct hci_rp_le_read_max_data_len *rp = data;
2116
2117 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2118
2119 if (rp->status)
2120 return rp->status;
2121
2122 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2123 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2124 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2125 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2126
2127 return rp->status;
2128}
2129
2130static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2131 struct sk_buff *skb)
2132{
2133 struct hci_cp_write_le_host_supported *sent;
2134 struct hci_ev_status *rp = data;
2135
2136 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2137
2138 if (rp->status)
2139 return rp->status;
2140
2141 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2142 if (!sent)
2143 return rp->status;
2144
2145 hci_dev_lock(hdev);
2146
2147 if (sent->le) {
2148 hdev->features[1][0] |= LMP_HOST_LE;
2149 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2150 } else {
2151 hdev->features[1][0] &= ~LMP_HOST_LE;
2152 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2153 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2154 }
2155
2156 if (sent->simul)
2157 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2158 else
2159 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2160
2161 hci_dev_unlock(hdev);
2162
2163 return rp->status;
2164}
2165
2166static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2167 struct sk_buff *skb)
2168{
2169 struct hci_cp_le_set_adv_param *cp;
2170 struct hci_ev_status *rp = data;
2171
2172 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2173
2174 if (rp->status)
2175 return rp->status;
2176
2177 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2178 if (!cp)
2179 return rp->status;
2180
2181 hci_dev_lock(hdev);
2182 hdev->adv_addr_type = cp->own_address_type;
2183 hci_dev_unlock(hdev);
2184
2185 return rp->status;
2186}
2187
2188static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2189 struct sk_buff *skb)
2190{
2191 struct hci_rp_le_set_ext_adv_params *rp = data;
2192 struct hci_cp_le_set_ext_adv_params *cp;
2193 struct adv_info *adv_instance;
2194
2195 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2196
2197 if (rp->status)
2198 return rp->status;
2199
2200 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2201 if (!cp)
2202 return rp->status;
2203
2204 hci_dev_lock(hdev);
2205 hdev->adv_addr_type = cp->own_addr_type;
2206 if (!cp->handle) {
2207 /* Store in hdev for instance 0 */
2208 hdev->adv_tx_power = rp->tx_power;
2209 } else {
2210 adv_instance = hci_find_adv_instance(hdev, instance: cp->handle);
2211 if (adv_instance)
2212 adv_instance->tx_power = rp->tx_power;
2213 }
2214 /* Update adv data as tx power is known now */
2215 hci_update_adv_data(hdev, instance: cp->handle);
2216
2217 hci_dev_unlock(hdev);
2218
2219 return rp->status;
2220}
2221
2222static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2223 struct sk_buff *skb)
2224{
2225 struct hci_rp_read_rssi *rp = data;
2226 struct hci_conn *conn;
2227
2228 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2229
2230 if (rp->status)
2231 return rp->status;
2232
2233 hci_dev_lock(hdev);
2234
2235 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2236 if (conn)
2237 conn->rssi = rp->rssi;
2238
2239 hci_dev_unlock(hdev);
2240
2241 return rp->status;
2242}
2243
2244static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2245 struct sk_buff *skb)
2246{
2247 struct hci_cp_read_tx_power *sent;
2248 struct hci_rp_read_tx_power *rp = data;
2249 struct hci_conn *conn;
2250
2251 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2252
2253 if (rp->status)
2254 return rp->status;
2255
2256 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2257 if (!sent)
2258 return rp->status;
2259
2260 hci_dev_lock(hdev);
2261
2262 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2263 if (!conn)
2264 goto unlock;
2265
2266 switch (sent->type) {
2267 case 0x00:
2268 conn->tx_power = rp->tx_power;
2269 break;
2270 case 0x01:
2271 conn->max_tx_power = rp->tx_power;
2272 break;
2273 }
2274
2275unlock:
2276 hci_dev_unlock(hdev);
2277 return rp->status;
2278}
2279
2280static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2281 struct sk_buff *skb)
2282{
2283 struct hci_ev_status *rp = data;
2284 u8 *mode;
2285
2286 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2287
2288 if (rp->status)
2289 return rp->status;
2290
2291 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2292 if (mode)
2293 hdev->ssp_debug_mode = *mode;
2294
2295 return rp->status;
2296}
2297
2298static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2299{
2300 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2301
2302 if (status) {
2303 hci_conn_check_pending(hdev);
2304 return;
2305 }
2306
2307 set_bit(nr: HCI_INQUIRY, addr: &hdev->flags);
2308}
2309
2310static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2311{
2312 struct hci_cp_create_conn *cp;
2313 struct hci_conn *conn;
2314
2315 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2316
2317 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2318 if (!cp)
2319 return;
2320
2321 hci_dev_lock(hdev);
2322
2323 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &cp->bdaddr);
2324
2325 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2326
2327 if (status) {
2328 if (conn && conn->state == BT_CONNECT) {
2329 if (status != 0x0c || conn->attempt > 2) {
2330 conn->state = BT_CLOSED;
2331 hci_connect_cfm(conn, status);
2332 hci_conn_del(conn);
2333 } else
2334 conn->state = BT_CONNECT2;
2335 }
2336 } else {
2337 if (!conn) {
2338 conn = hci_conn_add_unset(hdev, ACL_LINK, dst: &cp->bdaddr,
2339 HCI_ROLE_MASTER);
2340 if (!conn)
2341 bt_dev_err(hdev, "no memory for new connection");
2342 }
2343 }
2344
2345 hci_dev_unlock(hdev);
2346}
2347
2348static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2349{
2350 struct hci_cp_add_sco *cp;
2351 struct hci_conn *acl;
2352 struct hci_link *link;
2353 __u16 handle;
2354
2355 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2356
2357 if (!status)
2358 return;
2359
2360 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2361 if (!cp)
2362 return;
2363
2364 handle = __le16_to_cpu(cp->handle);
2365
2366 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2367
2368 hci_dev_lock(hdev);
2369
2370 acl = hci_conn_hash_lookup_handle(hdev, handle);
2371 if (acl) {
2372 link = list_first_entry_or_null(&acl->link_list,
2373 struct hci_link, list);
2374 if (link && link->conn) {
2375 link->conn->state = BT_CLOSED;
2376
2377 hci_connect_cfm(conn: link->conn, status);
2378 hci_conn_del(conn: link->conn);
2379 }
2380 }
2381
2382 hci_dev_unlock(hdev);
2383}
2384
2385static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2386{
2387 struct hci_cp_auth_requested *cp;
2388 struct hci_conn *conn;
2389
2390 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2391
2392 if (!status)
2393 return;
2394
2395 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2396 if (!cp)
2397 return;
2398
2399 hci_dev_lock(hdev);
2400
2401 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2402 if (conn) {
2403 if (conn->state == BT_CONFIG) {
2404 hci_connect_cfm(conn, status);
2405 hci_conn_drop(conn);
2406 }
2407 }
2408
2409 hci_dev_unlock(hdev);
2410}
2411
2412static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2413{
2414 struct hci_cp_set_conn_encrypt *cp;
2415 struct hci_conn *conn;
2416
2417 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2418
2419 if (!status)
2420 return;
2421
2422 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2423 if (!cp)
2424 return;
2425
2426 hci_dev_lock(hdev);
2427
2428 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2429 if (conn) {
2430 if (conn->state == BT_CONFIG) {
2431 hci_connect_cfm(conn, status);
2432 hci_conn_drop(conn);
2433 }
2434 }
2435
2436 hci_dev_unlock(hdev);
2437}
2438
2439static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2440 struct hci_conn *conn)
2441{
2442 if (conn->state != BT_CONFIG || !conn->out)
2443 return 0;
2444
2445 if (conn->pending_sec_level == BT_SECURITY_SDP)
2446 return 0;
2447
2448 /* Only request authentication for SSP connections or non-SSP
2449 * devices with sec_level MEDIUM or HIGH or if MITM protection
2450 * is requested.
2451 */
2452 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2453 conn->pending_sec_level != BT_SECURITY_FIPS &&
2454 conn->pending_sec_level != BT_SECURITY_HIGH &&
2455 conn->pending_sec_level != BT_SECURITY_MEDIUM)
2456 return 0;
2457
2458 return 1;
2459}
2460
2461static int hci_resolve_name(struct hci_dev *hdev,
2462 struct inquiry_entry *e)
2463{
2464 struct hci_cp_remote_name_req cp;
2465
2466 memset(&cp, 0, sizeof(cp));
2467
2468 bacpy(dst: &cp.bdaddr, src: &e->data.bdaddr);
2469 cp.pscan_rep_mode = e->data.pscan_rep_mode;
2470 cp.pscan_mode = e->data.pscan_mode;
2471 cp.clock_offset = e->data.clock_offset;
2472
2473 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, plen: sizeof(cp), param: &cp);
2474}
2475
2476static bool hci_resolve_next_name(struct hci_dev *hdev)
2477{
2478 struct discovery_state *discov = &hdev->discovery;
2479 struct inquiry_entry *e;
2480
2481 if (list_empty(head: &discov->resolve))
2482 return false;
2483
2484 /* We should stop if we already spent too much time resolving names. */
2485 if (time_after(jiffies, discov->name_resolve_timeout)) {
2486 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2487 return false;
2488 }
2489
2490 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, state: NAME_NEEDED);
2491 if (!e)
2492 return false;
2493
2494 if (hci_resolve_name(hdev, e) == 0) {
2495 e->name_state = NAME_PENDING;
2496 return true;
2497 }
2498
2499 return false;
2500}
2501
2502static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2503 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2504{
2505 struct discovery_state *discov = &hdev->discovery;
2506 struct inquiry_entry *e;
2507
2508 /* Update the mgmt connected state if necessary. Be careful with
2509 * conn objects that exist but are not (yet) connected however.
2510 * Only those in BT_CONFIG or BT_CONNECTED states can be
2511 * considered connected.
2512 */
2513 if (conn &&
2514 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2515 !test_and_set_bit(nr: HCI_CONN_MGMT_CONNECTED, addr: &conn->flags))
2516 mgmt_device_connected(hdev, conn, name, name_len);
2517
2518 if (discov->state == DISCOVERY_STOPPED)
2519 return;
2520
2521 if (discov->state == DISCOVERY_STOPPING)
2522 goto discov_complete;
2523
2524 if (discov->state != DISCOVERY_RESOLVING)
2525 return;
2526
2527 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, state: NAME_PENDING);
2528 /* If the device was not found in a list of found devices names of which
2529 * are pending. there is no need to continue resolving a next name as it
2530 * will be done upon receiving another Remote Name Request Complete
2531 * Event */
2532 if (!e)
2533 return;
2534
2535 list_del(entry: &e->list);
2536
2537 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2538 mgmt_remote_name(hdev, bdaddr, ACL_LINK, addr_type: 0x00, rssi: e->data.rssi,
2539 name, name_len);
2540
2541 if (hci_resolve_next_name(hdev))
2542 return;
2543
2544discov_complete:
2545 hci_discovery_set_state(hdev, state: DISCOVERY_STOPPED);
2546}
2547
2548static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2549{
2550 struct hci_cp_remote_name_req *cp;
2551 struct hci_conn *conn;
2552
2553 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2554
2555 /* If successful wait for the name req complete event before
2556 * checking for the need to do authentication */
2557 if (!status)
2558 return;
2559
2560 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2561 if (!cp)
2562 return;
2563
2564 hci_dev_lock(hdev);
2565
2566 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &cp->bdaddr);
2567
2568 if (hci_dev_test_flag(hdev, HCI_MGMT))
2569 hci_check_pending_name(hdev, conn, bdaddr: &cp->bdaddr, NULL, name_len: 0);
2570
2571 if (!conn)
2572 goto unlock;
2573
2574 if (!hci_outgoing_auth_needed(hdev, conn))
2575 goto unlock;
2576
2577 if (!test_and_set_bit(nr: HCI_CONN_AUTH_PEND, addr: &conn->flags)) {
2578 struct hci_cp_auth_requested auth_cp;
2579
2580 set_bit(nr: HCI_CONN_AUTH_INITIATOR, addr: &conn->flags);
2581
2582 auth_cp.handle = __cpu_to_le16(conn->handle);
2583 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2584 plen: sizeof(auth_cp), param: &auth_cp);
2585 }
2586
2587unlock:
2588 hci_dev_unlock(hdev);
2589}
2590
2591static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2592{
2593 struct hci_cp_read_remote_features *cp;
2594 struct hci_conn *conn;
2595
2596 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2597
2598 if (!status)
2599 return;
2600
2601 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2602 if (!cp)
2603 return;
2604
2605 hci_dev_lock(hdev);
2606
2607 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2608 if (conn) {
2609 if (conn->state == BT_CONFIG) {
2610 hci_connect_cfm(conn, status);
2611 hci_conn_drop(conn);
2612 }
2613 }
2614
2615 hci_dev_unlock(hdev);
2616}
2617
2618static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2619{
2620 struct hci_cp_read_remote_ext_features *cp;
2621 struct hci_conn *conn;
2622
2623 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2624
2625 if (!status)
2626 return;
2627
2628 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2629 if (!cp)
2630 return;
2631
2632 hci_dev_lock(hdev);
2633
2634 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2635 if (conn) {
2636 if (conn->state == BT_CONFIG) {
2637 hci_connect_cfm(conn, status);
2638 hci_conn_drop(conn);
2639 }
2640 }
2641
2642 hci_dev_unlock(hdev);
2643}
2644
2645static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2646 __u8 status)
2647{
2648 struct hci_conn *acl;
2649 struct hci_link *link;
2650
2651 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2652
2653 hci_dev_lock(hdev);
2654
2655 acl = hci_conn_hash_lookup_handle(hdev, handle);
2656 if (acl) {
2657 link = list_first_entry_or_null(&acl->link_list,
2658 struct hci_link, list);
2659 if (link && link->conn) {
2660 link->conn->state = BT_CLOSED;
2661
2662 hci_connect_cfm(conn: link->conn, status);
2663 hci_conn_del(conn: link->conn);
2664 }
2665 }
2666
2667 hci_dev_unlock(hdev);
2668}
2669
2670static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2671{
2672 struct hci_cp_setup_sync_conn *cp;
2673
2674 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2675
2676 if (!status)
2677 return;
2678
2679 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2680 if (!cp)
2681 return;
2682
2683 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2684}
2685
2686static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2687{
2688 struct hci_cp_enhanced_setup_sync_conn *cp;
2689
2690 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2691
2692 if (!status)
2693 return;
2694
2695 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2696 if (!cp)
2697 return;
2698
2699 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2700}
2701
2702static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2703{
2704 struct hci_cp_sniff_mode *cp;
2705 struct hci_conn *conn;
2706
2707 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2708
2709 if (!status)
2710 return;
2711
2712 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2713 if (!cp)
2714 return;
2715
2716 hci_dev_lock(hdev);
2717
2718 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2719 if (conn) {
2720 clear_bit(nr: HCI_CONN_MODE_CHANGE_PEND, addr: &conn->flags);
2721
2722 if (test_and_clear_bit(nr: HCI_CONN_SCO_SETUP_PEND, addr: &conn->flags))
2723 hci_sco_setup(conn, status);
2724 }
2725
2726 hci_dev_unlock(hdev);
2727}
2728
2729static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2730{
2731 struct hci_cp_exit_sniff_mode *cp;
2732 struct hci_conn *conn;
2733
2734 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2735
2736 if (!status)
2737 return;
2738
2739 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2740 if (!cp)
2741 return;
2742
2743 hci_dev_lock(hdev);
2744
2745 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2746 if (conn) {
2747 clear_bit(nr: HCI_CONN_MODE_CHANGE_PEND, addr: &conn->flags);
2748
2749 if (test_and_clear_bit(nr: HCI_CONN_SCO_SETUP_PEND, addr: &conn->flags))
2750 hci_sco_setup(conn, status);
2751 }
2752
2753 hci_dev_unlock(hdev);
2754}
2755
2756static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2757{
2758 struct hci_cp_disconnect *cp;
2759 struct hci_conn_params *params;
2760 struct hci_conn *conn;
2761 bool mgmt_conn;
2762
2763 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2764
2765 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2766 * otherwise cleanup the connection immediately.
2767 */
2768 if (!status && !hdev->suspended)
2769 return;
2770
2771 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2772 if (!cp)
2773 return;
2774
2775 hci_dev_lock(hdev);
2776
2777 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2778 if (!conn)
2779 goto unlock;
2780
2781 if (status) {
2782 mgmt_disconnect_failed(hdev, bdaddr: &conn->dst, link_type: conn->type,
2783 addr_type: conn->dst_type, status);
2784
2785 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2786 hdev->cur_adv_instance = conn->adv_instance;
2787 hci_enable_advertising(hdev);
2788 }
2789
2790 /* Inform sockets conn is gone before we delete it */
2791 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2792
2793 goto done;
2794 }
2795
2796 mgmt_conn = test_and_clear_bit(nr: HCI_CONN_MGMT_CONNECTED, addr: &conn->flags);
2797
2798 if (conn->type == ACL_LINK) {
2799 if (test_and_clear_bit(nr: HCI_CONN_FLUSH_KEY, addr: &conn->flags))
2800 hci_remove_link_key(hdev, bdaddr: &conn->dst);
2801 }
2802
2803 params = hci_conn_params_lookup(hdev, addr: &conn->dst, addr_type: conn->dst_type);
2804 if (params) {
2805 switch (params->auto_connect) {
2806 case HCI_AUTO_CONN_LINK_LOSS:
2807 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2808 break;
2809 fallthrough;
2810
2811 case HCI_AUTO_CONN_DIRECT:
2812 case HCI_AUTO_CONN_ALWAYS:
2813 hci_pend_le_list_del_init(param: params);
2814 hci_pend_le_list_add(param: params, list: &hdev->pend_le_conns);
2815 break;
2816
2817 default:
2818 break;
2819 }
2820 }
2821
2822 mgmt_device_disconnected(hdev, bdaddr: &conn->dst, link_type: conn->type, addr_type: conn->dst_type,
2823 reason: cp->reason, mgmt_connected: mgmt_conn);
2824
2825 hci_disconn_cfm(conn, reason: cp->reason);
2826
2827done:
2828 /* If the disconnection failed for any reason, the upper layer
2829 * does not retry to disconnect in current implementation.
2830 * Hence, we need to do some basic cleanup here and re-enable
2831 * advertising if necessary.
2832 */
2833 hci_conn_del(conn);
2834unlock:
2835 hci_dev_unlock(hdev);
2836}
2837
2838static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2839{
2840 /* When using controller based address resolution, then the new
2841 * address types 0x02 and 0x03 are used. These types need to be
2842 * converted back into either public address or random address type
2843 */
2844 switch (type) {
2845 case ADDR_LE_DEV_PUBLIC_RESOLVED:
2846 if (resolved)
2847 *resolved = true;
2848 return ADDR_LE_DEV_PUBLIC;
2849 case ADDR_LE_DEV_RANDOM_RESOLVED:
2850 if (resolved)
2851 *resolved = true;
2852 return ADDR_LE_DEV_RANDOM;
2853 }
2854
2855 if (resolved)
2856 *resolved = false;
2857 return type;
2858}
2859
2860static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2861 u8 peer_addr_type, u8 own_address_type,
2862 u8 filter_policy)
2863{
2864 struct hci_conn *conn;
2865
2866 conn = hci_conn_hash_lookup_le(hdev, ba: peer_addr,
2867 ba_type: peer_addr_type);
2868 if (!conn)
2869 return;
2870
2871 own_address_type = ev_bdaddr_type(hdev, type: own_address_type, NULL);
2872
2873 /* Store the initiator and responder address information which
2874 * is needed for SMP. These values will not change during the
2875 * lifetime of the connection.
2876 */
2877 conn->init_addr_type = own_address_type;
2878 if (own_address_type == ADDR_LE_DEV_RANDOM)
2879 bacpy(dst: &conn->init_addr, src: &hdev->random_addr);
2880 else
2881 bacpy(dst: &conn->init_addr, src: &hdev->bdaddr);
2882
2883 conn->resp_addr_type = peer_addr_type;
2884 bacpy(dst: &conn->resp_addr, src: peer_addr);
2885}
2886
2887static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2888{
2889 struct hci_cp_le_create_conn *cp;
2890
2891 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2892
2893 /* All connection failure handling is taken care of by the
2894 * hci_conn_failed function which is triggered by the HCI
2895 * request completion callbacks used for connecting.
2896 */
2897 if (status)
2898 return;
2899
2900 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2901 if (!cp)
2902 return;
2903
2904 hci_dev_lock(hdev);
2905
2906 cs_le_create_conn(hdev, peer_addr: &cp->peer_addr, peer_addr_type: cp->peer_addr_type,
2907 own_address_type: cp->own_address_type, filter_policy: cp->filter_policy);
2908
2909 hci_dev_unlock(hdev);
2910}
2911
2912static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2913{
2914 struct hci_cp_le_ext_create_conn *cp;
2915
2916 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2917
2918 /* All connection failure handling is taken care of by the
2919 * hci_conn_failed function which is triggered by the HCI
2920 * request completion callbacks used for connecting.
2921 */
2922 if (status)
2923 return;
2924
2925 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2926 if (!cp)
2927 return;
2928
2929 hci_dev_lock(hdev);
2930
2931 cs_le_create_conn(hdev, peer_addr: &cp->peer_addr, peer_addr_type: cp->peer_addr_type,
2932 own_address_type: cp->own_addr_type, filter_policy: cp->filter_policy);
2933
2934 hci_dev_unlock(hdev);
2935}
2936
2937static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2938{
2939 struct hci_cp_le_read_remote_features *cp;
2940 struct hci_conn *conn;
2941
2942 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2943
2944 if (!status)
2945 return;
2946
2947 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2948 if (!cp)
2949 return;
2950
2951 hci_dev_lock(hdev);
2952
2953 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2954 if (conn) {
2955 if (conn->state == BT_CONFIG) {
2956 hci_connect_cfm(conn, status);
2957 hci_conn_drop(conn);
2958 }
2959 }
2960
2961 hci_dev_unlock(hdev);
2962}
2963
2964static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2965{
2966 struct hci_cp_le_start_enc *cp;
2967 struct hci_conn *conn;
2968
2969 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2970
2971 if (!status)
2972 return;
2973
2974 hci_dev_lock(hdev);
2975
2976 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2977 if (!cp)
2978 goto unlock;
2979
2980 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2981 if (!conn)
2982 goto unlock;
2983
2984 if (conn->state != BT_CONNECTED)
2985 goto unlock;
2986
2987 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2988 hci_conn_drop(conn);
2989
2990unlock:
2991 hci_dev_unlock(hdev);
2992}
2993
2994static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2995{
2996 struct hci_cp_switch_role *cp;
2997 struct hci_conn *conn;
2998
2999 BT_DBG("%s status 0x%2.2x", hdev->name, status);
3000
3001 if (!status)
3002 return;
3003
3004 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3005 if (!cp)
3006 return;
3007
3008 hci_dev_lock(hdev);
3009
3010 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &cp->bdaddr);
3011 if (conn)
3012 clear_bit(nr: HCI_CONN_RSWITCH_PEND, addr: &conn->flags);
3013
3014 hci_dev_unlock(hdev);
3015}
3016
3017static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3018 struct sk_buff *skb)
3019{
3020 struct hci_ev_status *ev = data;
3021 struct discovery_state *discov = &hdev->discovery;
3022 struct inquiry_entry *e;
3023
3024 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3025
3026 hci_conn_check_pending(hdev);
3027
3028 if (!test_and_clear_bit(nr: HCI_INQUIRY, addr: &hdev->flags))
3029 return;
3030
3031 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3032 wake_up_bit(word: &hdev->flags, bit: HCI_INQUIRY);
3033
3034 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3035 return;
3036
3037 hci_dev_lock(hdev);
3038
3039 if (discov->state != DISCOVERY_FINDING)
3040 goto unlock;
3041
3042 if (list_empty(head: &discov->resolve)) {
3043 /* When BR/EDR inquiry is active and no LE scanning is in
3044 * progress, then change discovery state to indicate completion.
3045 *
3046 * When running LE scanning and BR/EDR inquiry simultaneously
3047 * and the LE scan already finished, then change the discovery
3048 * state to indicate completion.
3049 */
3050 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3051 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3052 hci_discovery_set_state(hdev, state: DISCOVERY_STOPPED);
3053 goto unlock;
3054 }
3055
3056 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, state: NAME_NEEDED);
3057 if (e && hci_resolve_name(hdev, e) == 0) {
3058 e->name_state = NAME_PENDING;
3059 hci_discovery_set_state(hdev, state: DISCOVERY_RESOLVING);
3060 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3061 } else {
3062 /* When BR/EDR inquiry is active and no LE scanning is in
3063 * progress, then change discovery state to indicate completion.
3064 *
3065 * When running LE scanning and BR/EDR inquiry simultaneously
3066 * and the LE scan already finished, then change the discovery
3067 * state to indicate completion.
3068 */
3069 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3070 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3071 hci_discovery_set_state(hdev, state: DISCOVERY_STOPPED);
3072 }
3073
3074unlock:
3075 hci_dev_unlock(hdev);
3076}
3077
3078static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3079 struct sk_buff *skb)
3080{
3081 struct hci_ev_inquiry_result *ev = edata;
3082 struct inquiry_data data;
3083 int i;
3084
3085 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3086 flex_array_size(ev, info, ev->num)))
3087 return;
3088
3089 bt_dev_dbg(hdev, "num %d", ev->num);
3090
3091 if (!ev->num)
3092 return;
3093
3094 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3095 return;
3096
3097 hci_dev_lock(hdev);
3098
3099 for (i = 0; i < ev->num; i++) {
3100 struct inquiry_info *info = &ev->info[i];
3101 u32 flags;
3102
3103 bacpy(dst: &data.bdaddr, src: &info->bdaddr);
3104 data.pscan_rep_mode = info->pscan_rep_mode;
3105 data.pscan_period_mode = info->pscan_period_mode;
3106 data.pscan_mode = info->pscan_mode;
3107 memcpy(data.dev_class, info->dev_class, 3);
3108 data.clock_offset = info->clock_offset;
3109 data.rssi = HCI_RSSI_INVALID;
3110 data.ssp_mode = 0x00;
3111
3112 flags = hci_inquiry_cache_update(hdev, data: &data, name_known: false);
3113
3114 mgmt_device_found(hdev, bdaddr: &info->bdaddr, ACL_LINK, addr_type: 0x00,
3115 dev_class: info->dev_class, HCI_RSSI_INVALID,
3116 flags, NULL, eir_len: 0, NULL, scan_rsp_len: 0, instant: 0);
3117 }
3118
3119 hci_dev_unlock(hdev);
3120}
3121
3122static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3123 struct sk_buff *skb)
3124{
3125 struct hci_ev_conn_complete *ev = data;
3126 struct hci_conn *conn;
3127 u8 status = ev->status;
3128
3129 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3130
3131 hci_dev_lock(hdev);
3132
3133 conn = hci_conn_hash_lookup_ba(hdev, type: ev->link_type, ba: &ev->bdaddr);
3134 if (!conn) {
3135 /* In case of error status and there is no connection pending
3136 * just unlock as there is nothing to cleanup.
3137 */
3138 if (ev->status)
3139 goto unlock;
3140
3141 /* Connection may not exist if auto-connected. Check the bredr
3142 * allowlist to see if this device is allowed to auto connect.
3143 * If link is an ACL type, create a connection class
3144 * automatically.
3145 *
3146 * Auto-connect will only occur if the event filter is
3147 * programmed with a given address. Right now, event filter is
3148 * only used during suspend.
3149 */
3150 if (ev->link_type == ACL_LINK &&
3151 hci_bdaddr_list_lookup_with_flags(list: &hdev->accept_list,
3152 bdaddr: &ev->bdaddr,
3153 BDADDR_BREDR)) {
3154 conn = hci_conn_add_unset(hdev, type: ev->link_type,
3155 dst: &ev->bdaddr, HCI_ROLE_SLAVE);
3156 if (!conn) {
3157 bt_dev_err(hdev, "no memory for new conn");
3158 goto unlock;
3159 }
3160 } else {
3161 if (ev->link_type != SCO_LINK)
3162 goto unlock;
3163
3164 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3165 ba: &ev->bdaddr);
3166 if (!conn)
3167 goto unlock;
3168
3169 conn->type = SCO_LINK;
3170 }
3171 }
3172
3173 /* The HCI_Connection_Complete event is only sent once per connection.
3174 * Processing it more than once per connection can corrupt kernel memory.
3175 *
3176 * As the connection handle is set here for the first time, it indicates
3177 * whether the connection is already set up.
3178 */
3179 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3180 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3181 goto unlock;
3182 }
3183
3184 if (!status) {
3185 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3186 if (status)
3187 goto done;
3188
3189 if (conn->type == ACL_LINK) {
3190 conn->state = BT_CONFIG;
3191 hci_conn_hold(conn);
3192
3193 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3194 !hci_find_link_key(hdev, bdaddr: &ev->bdaddr))
3195 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3196 else
3197 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3198 } else
3199 conn->state = BT_CONNECTED;
3200
3201 hci_debugfs_create_conn(conn);
3202 hci_conn_add_sysfs(conn);
3203
3204 if (test_bit(HCI_AUTH, &hdev->flags))
3205 set_bit(nr: HCI_CONN_AUTH, addr: &conn->flags);
3206
3207 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3208 set_bit(nr: HCI_CONN_ENCRYPT, addr: &conn->flags);
3209
3210 /* Get remote features */
3211 if (conn->type == ACL_LINK) {
3212 struct hci_cp_read_remote_features cp;
3213 cp.handle = ev->handle;
3214 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3215 plen: sizeof(cp), param: &cp);
3216
3217 hci_update_scan(hdev);
3218 }
3219
3220 /* Set packet type for incoming connection */
3221 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3222 struct hci_cp_change_conn_ptype cp;
3223 cp.handle = ev->handle;
3224 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3225 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, plen: sizeof(cp),
3226 param: &cp);
3227 }
3228 }
3229
3230 if (conn->type == ACL_LINK)
3231 hci_sco_setup(conn, status: ev->status);
3232
3233done:
3234 if (status) {
3235 hci_conn_failed(conn, status);
3236 } else if (ev->link_type == SCO_LINK) {
3237 switch (conn->setting & SCO_AIRMODE_MASK) {
3238 case SCO_AIRMODE_CVSD:
3239 if (hdev->notify)
3240 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3241 break;
3242 }
3243
3244 hci_connect_cfm(conn, status);
3245 }
3246
3247unlock:
3248 hci_dev_unlock(hdev);
3249
3250 hci_conn_check_pending(hdev);
3251}
3252
3253static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3254{
3255 struct hci_cp_reject_conn_req cp;
3256
3257 bacpy(dst: &cp.bdaddr, src: bdaddr);
3258 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3259 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, plen: sizeof(cp), param: &cp);
3260}
3261
3262static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3263 struct sk_buff *skb)
3264{
3265 struct hci_ev_conn_request *ev = data;
3266 int mask = hdev->link_mode;
3267 struct inquiry_entry *ie;
3268 struct hci_conn *conn;
3269 __u8 flags = 0;
3270
3271 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3272
3273 /* Reject incoming connection from device with same BD ADDR against
3274 * CVE-2020-26555
3275 */
3276 if (hdev && !bacmp(ba1: &hdev->bdaddr, ba2: &ev->bdaddr)) {
3277 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3278 &ev->bdaddr);
3279 hci_reject_conn(hdev, bdaddr: &ev->bdaddr);
3280 return;
3281 }
3282
3283 mask |= hci_proto_connect_ind(hdev, bdaddr: &ev->bdaddr, type: ev->link_type,
3284 flags: &flags);
3285
3286 if (!(mask & HCI_LM_ACCEPT)) {
3287 hci_reject_conn(hdev, bdaddr: &ev->bdaddr);
3288 return;
3289 }
3290
3291 hci_dev_lock(hdev);
3292
3293 if (hci_bdaddr_list_lookup(list: &hdev->reject_list, bdaddr: &ev->bdaddr,
3294 BDADDR_BREDR)) {
3295 hci_reject_conn(hdev, bdaddr: &ev->bdaddr);
3296 goto unlock;
3297 }
3298
3299 /* Require HCI_CONNECTABLE or an accept list entry to accept the
3300 * connection. These features are only touched through mgmt so
3301 * only do the checks if HCI_MGMT is set.
3302 */
3303 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3304 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3305 !hci_bdaddr_list_lookup_with_flags(list: &hdev->accept_list, bdaddr: &ev->bdaddr,
3306 BDADDR_BREDR)) {
3307 hci_reject_conn(hdev, bdaddr: &ev->bdaddr);
3308 goto unlock;
3309 }
3310
3311 /* Connection accepted */
3312
3313 ie = hci_inquiry_cache_lookup(hdev, bdaddr: &ev->bdaddr);
3314 if (ie)
3315 memcpy(ie->data.dev_class, ev->dev_class, 3);
3316
3317 conn = hci_conn_hash_lookup_ba(hdev, type: ev->link_type,
3318 ba: &ev->bdaddr);
3319 if (!conn) {
3320 conn = hci_conn_add_unset(hdev, type: ev->link_type, dst: &ev->bdaddr,
3321 HCI_ROLE_SLAVE);
3322 if (!conn) {
3323 bt_dev_err(hdev, "no memory for new connection");
3324 goto unlock;
3325 }
3326 }
3327
3328 memcpy(conn->dev_class, ev->dev_class, 3);
3329
3330 hci_dev_unlock(hdev);
3331
3332 if (ev->link_type == ACL_LINK ||
3333 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3334 struct hci_cp_accept_conn_req cp;
3335 conn->state = BT_CONNECT;
3336
3337 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
3338
3339 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3340 cp.role = 0x00; /* Become central */
3341 else
3342 cp.role = 0x01; /* Remain peripheral */
3343
3344 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, plen: sizeof(cp), param: &cp);
3345 } else if (!(flags & HCI_PROTO_DEFER)) {
3346 struct hci_cp_accept_sync_conn_req cp;
3347 conn->state = BT_CONNECT;
3348
3349 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
3350 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3351
3352 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
3353 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
3354 cp.max_latency = cpu_to_le16(0xffff);
3355 cp.content_format = cpu_to_le16(hdev->voice_setting);
3356 cp.retrans_effort = 0xff;
3357
3358 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, plen: sizeof(cp),
3359 param: &cp);
3360 } else {
3361 conn->state = BT_CONNECT2;
3362 hci_connect_cfm(conn, status: 0);
3363 }
3364
3365 return;
3366unlock:
3367 hci_dev_unlock(hdev);
3368}
3369
3370static u8 hci_to_mgmt_reason(u8 err)
3371{
3372 switch (err) {
3373 case HCI_ERROR_CONNECTION_TIMEOUT:
3374 return MGMT_DEV_DISCONN_TIMEOUT;
3375 case HCI_ERROR_REMOTE_USER_TERM:
3376 case HCI_ERROR_REMOTE_LOW_RESOURCES:
3377 case HCI_ERROR_REMOTE_POWER_OFF:
3378 return MGMT_DEV_DISCONN_REMOTE;
3379 case HCI_ERROR_LOCAL_HOST_TERM:
3380 return MGMT_DEV_DISCONN_LOCAL_HOST;
3381 default:
3382 return MGMT_DEV_DISCONN_UNKNOWN;
3383 }
3384}
3385
3386static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3387 struct sk_buff *skb)
3388{
3389 struct hci_ev_disconn_complete *ev = data;
3390 u8 reason;
3391 struct hci_conn_params *params;
3392 struct hci_conn *conn;
3393 bool mgmt_connected;
3394
3395 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3396
3397 hci_dev_lock(hdev);
3398
3399 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3400 if (!conn)
3401 goto unlock;
3402
3403 if (ev->status) {
3404 mgmt_disconnect_failed(hdev, bdaddr: &conn->dst, link_type: conn->type,
3405 addr_type: conn->dst_type, status: ev->status);
3406 goto unlock;
3407 }
3408
3409 conn->state = BT_CLOSED;
3410
3411 mgmt_connected = test_and_clear_bit(nr: HCI_CONN_MGMT_CONNECTED, addr: &conn->flags);
3412
3413 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3414 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3415 else
3416 reason = hci_to_mgmt_reason(err: ev->reason);
3417
3418 mgmt_device_disconnected(hdev, bdaddr: &conn->dst, link_type: conn->type, addr_type: conn->dst_type,
3419 reason, mgmt_connected);
3420
3421 if (conn->type == ACL_LINK) {
3422 if (test_and_clear_bit(nr: HCI_CONN_FLUSH_KEY, addr: &conn->flags))
3423 hci_remove_link_key(hdev, bdaddr: &conn->dst);
3424
3425 hci_update_scan(hdev);
3426 }
3427
3428 params = hci_conn_params_lookup(hdev, addr: &conn->dst, addr_type: conn->dst_type);
3429 if (params) {
3430 switch (params->auto_connect) {
3431 case HCI_AUTO_CONN_LINK_LOSS:
3432 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3433 break;
3434 fallthrough;
3435
3436 case HCI_AUTO_CONN_DIRECT:
3437 case HCI_AUTO_CONN_ALWAYS:
3438 hci_pend_le_list_del_init(param: params);
3439 hci_pend_le_list_add(param: params, list: &hdev->pend_le_conns);
3440 hci_update_passive_scan(hdev);
3441 break;
3442
3443 default:
3444 break;
3445 }
3446 }
3447
3448 hci_disconn_cfm(conn, reason: ev->reason);
3449
3450 /* Re-enable advertising if necessary, since it might
3451 * have been disabled by the connection. From the
3452 * HCI_LE_Set_Advertise_Enable command description in
3453 * the core specification (v4.0):
3454 * "The Controller shall continue advertising until the Host
3455 * issues an LE_Set_Advertise_Enable command with
3456 * Advertising_Enable set to 0x00 (Advertising is disabled)
3457 * or until a connection is created or until the Advertising
3458 * is timed out due to Directed Advertising."
3459 */
3460 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3461 hdev->cur_adv_instance = conn->adv_instance;
3462 hci_enable_advertising(hdev);
3463 }
3464
3465 hci_conn_del(conn);
3466
3467unlock:
3468 hci_dev_unlock(hdev);
3469}
3470
3471static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3472 struct sk_buff *skb)
3473{
3474 struct hci_ev_auth_complete *ev = data;
3475 struct hci_conn *conn;
3476
3477 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3478
3479 hci_dev_lock(hdev);
3480
3481 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3482 if (!conn)
3483 goto unlock;
3484
3485 if (!ev->status) {
3486 clear_bit(nr: HCI_CONN_AUTH_FAILURE, addr: &conn->flags);
3487
3488 if (!hci_conn_ssp_enabled(conn) &&
3489 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3490 bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3491 } else {
3492 set_bit(nr: HCI_CONN_AUTH, addr: &conn->flags);
3493 conn->sec_level = conn->pending_sec_level;
3494 }
3495 } else {
3496 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3497 set_bit(nr: HCI_CONN_AUTH_FAILURE, addr: &conn->flags);
3498
3499 mgmt_auth_failed(conn, status: ev->status);
3500 }
3501
3502 clear_bit(nr: HCI_CONN_AUTH_PEND, addr: &conn->flags);
3503 clear_bit(nr: HCI_CONN_REAUTH_PEND, addr: &conn->flags);
3504
3505 if (conn->state == BT_CONFIG) {
3506 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3507 struct hci_cp_set_conn_encrypt cp;
3508 cp.handle = ev->handle;
3509 cp.encrypt = 0x01;
3510 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, plen: sizeof(cp),
3511 param: &cp);
3512 } else {
3513 conn->state = BT_CONNECTED;
3514 hci_connect_cfm(conn, status: ev->status);
3515 hci_conn_drop(conn);
3516 }
3517 } else {
3518 hci_auth_cfm(conn, status: ev->status);
3519
3520 hci_conn_hold(conn);
3521 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3522 hci_conn_drop(conn);
3523 }
3524
3525 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3526 if (!ev->status) {
3527 struct hci_cp_set_conn_encrypt cp;
3528 cp.handle = ev->handle;
3529 cp.encrypt = 0x01;
3530 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, plen: sizeof(cp),
3531 param: &cp);
3532 } else {
3533 clear_bit(nr: HCI_CONN_ENCRYPT_PEND, addr: &conn->flags);
3534 hci_encrypt_cfm(conn, status: ev->status);
3535 }
3536 }
3537
3538unlock:
3539 hci_dev_unlock(hdev);
3540}
3541
3542static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3543 struct sk_buff *skb)
3544{
3545 struct hci_ev_remote_name *ev = data;
3546 struct hci_conn *conn;
3547
3548 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3549
3550 hci_conn_check_pending(hdev);
3551
3552 hci_dev_lock(hdev);
3553
3554 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
3555
3556 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3557 goto check_auth;
3558
3559 if (ev->status == 0)
3560 hci_check_pending_name(hdev, conn, bdaddr: &ev->bdaddr, name: ev->name,
3561 name_len: strnlen(p: ev->name, HCI_MAX_NAME_LENGTH));
3562 else
3563 hci_check_pending_name(hdev, conn, bdaddr: &ev->bdaddr, NULL, name_len: 0);
3564
3565check_auth:
3566 if (!conn)
3567 goto unlock;
3568
3569 if (!hci_outgoing_auth_needed(hdev, conn))
3570 goto unlock;
3571
3572 if (!test_and_set_bit(nr: HCI_CONN_AUTH_PEND, addr: &conn->flags)) {
3573 struct hci_cp_auth_requested cp;
3574
3575 set_bit(nr: HCI_CONN_AUTH_INITIATOR, addr: &conn->flags);
3576
3577 cp.handle = __cpu_to_le16(conn->handle);
3578 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, plen: sizeof(cp), param: &cp);
3579 }
3580
3581unlock:
3582 hci_dev_unlock(hdev);
3583}
3584
3585static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3586 struct sk_buff *skb)
3587{
3588 struct hci_ev_encrypt_change *ev = data;
3589 struct hci_conn *conn;
3590
3591 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3592
3593 hci_dev_lock(hdev);
3594
3595 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3596 if (!conn)
3597 goto unlock;
3598
3599 if (!ev->status) {
3600 if (ev->encrypt) {
3601 /* Encryption implies authentication */
3602 set_bit(nr: HCI_CONN_AUTH, addr: &conn->flags);
3603 set_bit(nr: HCI_CONN_ENCRYPT, addr: &conn->flags);
3604 conn->sec_level = conn->pending_sec_level;
3605
3606 /* P-256 authentication key implies FIPS */
3607 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3608 set_bit(nr: HCI_CONN_FIPS, addr: &conn->flags);
3609
3610 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3611 conn->type == LE_LINK)
3612 set_bit(nr: HCI_CONN_AES_CCM, addr: &conn->flags);
3613 } else {
3614 clear_bit(nr: HCI_CONN_ENCRYPT, addr: &conn->flags);
3615 clear_bit(nr: HCI_CONN_AES_CCM, addr: &conn->flags);
3616 }
3617 }
3618
3619 /* We should disregard the current RPA and generate a new one
3620 * whenever the encryption procedure fails.
3621 */
3622 if (ev->status && conn->type == LE_LINK) {
3623 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3624 hci_adv_instances_set_rpa_expired(hdev, rpa_expired: true);
3625 }
3626
3627 clear_bit(nr: HCI_CONN_ENCRYPT_PEND, addr: &conn->flags);
3628
3629 /* Check link security requirements are met */
3630 if (!hci_conn_check_link_mode(conn))
3631 ev->status = HCI_ERROR_AUTH_FAILURE;
3632
3633 if (ev->status && conn->state == BT_CONNECTED) {
3634 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3635 set_bit(nr: HCI_CONN_AUTH_FAILURE, addr: &conn->flags);
3636
3637 /* Notify upper layers so they can cleanup before
3638 * disconnecting.
3639 */
3640 hci_encrypt_cfm(conn, status: ev->status);
3641 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3642 hci_conn_drop(conn);
3643 goto unlock;
3644 }
3645
3646 /* Try reading the encryption key size for encrypted ACL links */
3647 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3648 struct hci_cp_read_enc_key_size cp;
3649
3650 /* Only send HCI_Read_Encryption_Key_Size if the
3651 * controller really supports it. If it doesn't, assume
3652 * the default size (16).
3653 */
3654 if (!(hdev->commands[20] & 0x10)) {
3655 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3656 goto notify;
3657 }
3658
3659 cp.handle = cpu_to_le16(conn->handle);
3660 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3661 plen: sizeof(cp), param: &cp)) {
3662 bt_dev_err(hdev, "sending read key size failed");
3663 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3664 goto notify;
3665 }
3666
3667 goto unlock;
3668 }
3669
3670 /* Set the default Authenticated Payload Timeout after
3671 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3672 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3673 * sent when the link is active and Encryption is enabled, the conn
3674 * type can be either LE or ACL and controller must support LMP Ping.
3675 * Ensure for AES-CCM encryption as well.
3676 */
3677 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3678 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3679 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3680 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3681 struct hci_cp_write_auth_payload_to cp;
3682
3683 cp.handle = cpu_to_le16(conn->handle);
3684 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3685 if (hci_send_cmd(hdev: conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3686 plen: sizeof(cp), param: &cp)) {
3687 bt_dev_err(hdev, "write auth payload timeout failed");
3688 goto notify;
3689 }
3690
3691 goto unlock;
3692 }
3693
3694notify:
3695 hci_encrypt_cfm(conn, status: ev->status);
3696
3697unlock:
3698 hci_dev_unlock(hdev);
3699}
3700
3701static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3702 struct sk_buff *skb)
3703{
3704 struct hci_ev_change_link_key_complete *ev = data;
3705 struct hci_conn *conn;
3706
3707 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3708
3709 hci_dev_lock(hdev);
3710
3711 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3712 if (conn) {
3713 if (!ev->status)
3714 set_bit(nr: HCI_CONN_SECURE, addr: &conn->flags);
3715
3716 clear_bit(nr: HCI_CONN_AUTH_PEND, addr: &conn->flags);
3717
3718 hci_key_change_cfm(conn, status: ev->status);
3719 }
3720
3721 hci_dev_unlock(hdev);
3722}
3723
3724static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3725 struct sk_buff *skb)
3726{
3727 struct hci_ev_remote_features *ev = data;
3728 struct hci_conn *conn;
3729
3730 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3731
3732 hci_dev_lock(hdev);
3733
3734 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3735 if (!conn)
3736 goto unlock;
3737
3738 if (!ev->status)
3739 memcpy(conn->features[0], ev->features, 8);
3740
3741 if (conn->state != BT_CONFIG)
3742 goto unlock;
3743
3744 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3745 lmp_ext_feat_capable(conn)) {
3746 struct hci_cp_read_remote_ext_features cp;
3747 cp.handle = ev->handle;
3748 cp.page = 0x01;
3749 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3750 plen: sizeof(cp), param: &cp);
3751 goto unlock;
3752 }
3753
3754 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3755 struct hci_cp_remote_name_req cp;
3756 memset(&cp, 0, sizeof(cp));
3757 bacpy(dst: &cp.bdaddr, src: &conn->dst);
3758 cp.pscan_rep_mode = 0x02;
3759 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, plen: sizeof(cp), param: &cp);
3760 } else if (!test_and_set_bit(nr: HCI_CONN_MGMT_CONNECTED, addr: &conn->flags))
3761 mgmt_device_connected(hdev, conn, NULL, name_len: 0);
3762
3763 if (!hci_outgoing_auth_needed(hdev, conn)) {
3764 conn->state = BT_CONNECTED;
3765 hci_connect_cfm(conn, status: ev->status);
3766 hci_conn_drop(conn);
3767 }
3768
3769unlock:
3770 hci_dev_unlock(hdev);
3771}
3772
3773static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3774{
3775 cancel_delayed_work(dwork: &hdev->cmd_timer);
3776
3777 rcu_read_lock();
3778 if (!test_bit(HCI_RESET, &hdev->flags)) {
3779 if (ncmd) {
3780 cancel_delayed_work(dwork: &hdev->ncmd_timer);
3781 atomic_set(v: &hdev->cmd_cnt, i: 1);
3782 } else {
3783 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3784 queue_delayed_work(wq: hdev->workqueue, dwork: &hdev->ncmd_timer,
3785 HCI_NCMD_TIMEOUT);
3786 }
3787 }
3788 rcu_read_unlock();
3789}
3790
3791static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3792 struct sk_buff *skb)
3793{
3794 struct hci_rp_le_read_buffer_size_v2 *rp = data;
3795
3796 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3797
3798 if (rp->status)
3799 return rp->status;
3800
3801 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
3802 hdev->le_pkts = rp->acl_max_pkt;
3803 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
3804 hdev->iso_pkts = rp->iso_max_pkt;
3805
3806 hdev->le_cnt = hdev->le_pkts;
3807 hdev->iso_cnt = hdev->iso_pkts;
3808
3809 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3810 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3811
3812 return rp->status;
3813}
3814
3815static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3816{
3817 struct hci_conn *conn, *tmp;
3818
3819 lockdep_assert_held(&hdev->lock);
3820
3821 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3822 if (conn->type != ISO_LINK || !bacmp(ba1: &conn->dst, BDADDR_ANY) ||
3823 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3824 continue;
3825
3826 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3827 hci_conn_failed(conn, status);
3828 }
3829}
3830
3831static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3832 struct sk_buff *skb)
3833{
3834 struct hci_rp_le_set_cig_params *rp = data;
3835 struct hci_cp_le_set_cig_params *cp;
3836 struct hci_conn *conn;
3837 u8 status = rp->status;
3838 bool pending = false;
3839 int i;
3840
3841 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3842
3843 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3844 if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3845 rp->cig_id != cp->cig_id)) {
3846 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3847 status = HCI_ERROR_UNSPECIFIED;
3848 }
3849
3850 hci_dev_lock(hdev);
3851
3852 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3853 *
3854 * If the Status return parameter is non-zero, then the state of the CIG
3855 * and its CIS configurations shall not be changed by the command. If
3856 * the CIG did not already exist, it shall not be created.
3857 */
3858 if (status) {
3859 /* Keep current configuration, fail only the unbound CIS */
3860 hci_unbound_cis_failed(hdev, cig: rp->cig_id, status);
3861 goto unlock;
3862 }
3863
3864 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3865 *
3866 * If the Status return parameter is zero, then the Controller shall
3867 * set the Connection_Handle arrayed return parameter to the connection
3868 * handle(s) corresponding to the CIS configurations specified in
3869 * the CIS_IDs command parameter, in the same order.
3870 */
3871 for (i = 0; i < rp->num_handles; ++i) {
3872 conn = hci_conn_hash_lookup_cis(hdev, NULL, ba_type: 0, cig: rp->cig_id,
3873 id: cp->cis[i].cis_id);
3874 if (!conn || !bacmp(ba1: &conn->dst, BDADDR_ANY))
3875 continue;
3876
3877 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3878 continue;
3879
3880 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3881 continue;
3882
3883 if (conn->state == BT_CONNECT)
3884 pending = true;
3885 }
3886
3887unlock:
3888 if (pending)
3889 hci_le_create_cis_pending(hdev);
3890
3891 hci_dev_unlock(hdev);
3892
3893 return rp->status;
3894}
3895
3896static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3897 struct sk_buff *skb)
3898{
3899 struct hci_rp_le_setup_iso_path *rp = data;
3900 struct hci_cp_le_setup_iso_path *cp;
3901 struct hci_conn *conn;
3902
3903 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3904
3905 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3906 if (!cp)
3907 return rp->status;
3908
3909 hci_dev_lock(hdev);
3910
3911 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3912 if (!conn)
3913 goto unlock;
3914
3915 if (rp->status) {
3916 hci_connect_cfm(conn, status: rp->status);
3917 hci_conn_del(conn);
3918 goto unlock;
3919 }
3920
3921 switch (cp->direction) {
3922 /* Input (Host to Controller) */
3923 case 0x00:
3924 /* Only confirm connection if output only */
3925 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3926 hci_connect_cfm(conn, status: rp->status);
3927 break;
3928 /* Output (Controller to Host) */
3929 case 0x01:
3930 /* Confirm connection since conn->iso_qos is always configured
3931 * last.
3932 */
3933 hci_connect_cfm(conn, status: rp->status);
3934 break;
3935 }
3936
3937unlock:
3938 hci_dev_unlock(hdev);
3939 return rp->status;
3940}
3941
3942static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3943{
3944 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3945}
3946
3947static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3948 struct sk_buff *skb)
3949{
3950 struct hci_ev_status *rp = data;
3951 struct hci_cp_le_set_per_adv_params *cp;
3952
3953 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3954
3955 if (rp->status)
3956 return rp->status;
3957
3958 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3959 if (!cp)
3960 return rp->status;
3961
3962 /* TODO: set the conn state */
3963 return rp->status;
3964}
3965
3966static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3967 struct sk_buff *skb)
3968{
3969 struct hci_ev_status *rp = data;
3970 struct hci_cp_le_set_per_adv_enable *cp;
3971 struct adv_info *adv = NULL, *n;
3972 u8 per_adv_cnt = 0;
3973
3974 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3975
3976 if (rp->status)
3977 return rp->status;
3978
3979 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3980 if (!cp)
3981 return rp->status;
3982
3983 hci_dev_lock(hdev);
3984
3985 adv = hci_find_adv_instance(hdev, instance: cp->handle);
3986
3987 if (cp->enable) {
3988 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3989
3990 if (adv)
3991 adv->enabled = true;
3992 } else {
3993 /* If just one instance was disabled check if there are
3994 * any other instance enabled before clearing HCI_LE_PER_ADV.
3995 * The current periodic adv instance will be marked as
3996 * disabled once extended advertising is also disabled.
3997 */
3998 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
3999 list) {
4000 if (adv->periodic && adv->enabled)
4001 per_adv_cnt++;
4002 }
4003
4004 if (per_adv_cnt > 1)
4005 goto unlock;
4006
4007 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4008 }
4009
4010unlock:
4011 hci_dev_unlock(hdev);
4012
4013 return rp->status;
4014}
4015
4016#define HCI_CC_VL(_op, _func, _min, _max) \
4017{ \
4018 .op = _op, \
4019 .func = _func, \
4020 .min_len = _min, \
4021 .max_len = _max, \
4022}
4023
4024#define HCI_CC(_op, _func, _len) \
4025 HCI_CC_VL(_op, _func, _len, _len)
4026
4027#define HCI_CC_STATUS(_op, _func) \
4028 HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4029
4030static const struct hci_cc {
4031 u16 op;
4032 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4033 u16 min_len;
4034 u16 max_len;
4035} hci_cc_table[] = {
4036 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4037 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4038 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4039 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4040 hci_cc_remote_name_req_cancel),
4041 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4042 sizeof(struct hci_rp_role_discovery)),
4043 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4044 sizeof(struct hci_rp_read_link_policy)),
4045 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4046 sizeof(struct hci_rp_write_link_policy)),
4047 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4048 sizeof(struct hci_rp_read_def_link_policy)),
4049 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4050 hci_cc_write_def_link_policy),
4051 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4052 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4053 sizeof(struct hci_rp_read_stored_link_key)),
4054 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4055 sizeof(struct hci_rp_delete_stored_link_key)),
4056 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4057 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4058 sizeof(struct hci_rp_read_local_name)),
4059 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4060 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4061 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4062 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4063 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4064 sizeof(struct hci_rp_read_class_of_dev)),
4065 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4066 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4067 sizeof(struct hci_rp_read_voice_setting)),
4068 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4069 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4070 sizeof(struct hci_rp_read_num_supported_iac)),
4071 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4072 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4073 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4074 sizeof(struct hci_rp_read_auth_payload_to)),
4075 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4076 sizeof(struct hci_rp_write_auth_payload_to)),
4077 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4078 sizeof(struct hci_rp_read_local_version)),
4079 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4080 sizeof(struct hci_rp_read_local_commands)),
4081 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4082 sizeof(struct hci_rp_read_local_features)),
4083 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4084 sizeof(struct hci_rp_read_local_ext_features)),
4085 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4086 sizeof(struct hci_rp_read_buffer_size)),
4087 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4088 sizeof(struct hci_rp_read_bd_addr)),
4089 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4090 sizeof(struct hci_rp_read_local_pairing_opts)),
4091 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4092 sizeof(struct hci_rp_read_page_scan_activity)),
4093 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4094 hci_cc_write_page_scan_activity),
4095 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4096 sizeof(struct hci_rp_read_page_scan_type)),
4097 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4098 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4099 sizeof(struct hci_rp_read_data_block_size)),
4100 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4101 sizeof(struct hci_rp_read_flow_control_mode)),
4102 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4103 sizeof(struct hci_rp_read_local_amp_info)),
4104 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4105 sizeof(struct hci_rp_read_clock)),
4106 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4107 sizeof(struct hci_rp_read_enc_key_size)),
4108 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4109 sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4110 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4111 hci_cc_read_def_err_data_reporting,
4112 sizeof(struct hci_rp_read_def_err_data_reporting)),
4113 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4114 hci_cc_write_def_err_data_reporting),
4115 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4116 sizeof(struct hci_rp_pin_code_reply)),
4117 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4118 sizeof(struct hci_rp_pin_code_neg_reply)),
4119 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4120 sizeof(struct hci_rp_read_local_oob_data)),
4121 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4122 sizeof(struct hci_rp_read_local_oob_ext_data)),
4123 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4124 sizeof(struct hci_rp_le_read_buffer_size)),
4125 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4126 sizeof(struct hci_rp_le_read_local_features)),
4127 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4128 sizeof(struct hci_rp_le_read_adv_tx_power)),
4129 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4130 sizeof(struct hci_rp_user_confirm_reply)),
4131 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4132 sizeof(struct hci_rp_user_confirm_reply)),
4133 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4134 sizeof(struct hci_rp_user_confirm_reply)),
4135 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4136 sizeof(struct hci_rp_user_confirm_reply)),
4137 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4138 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4139 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4140 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4141 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4142 hci_cc_le_read_accept_list_size,
4143 sizeof(struct hci_rp_le_read_accept_list_size)),
4144 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4145 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4146 hci_cc_le_add_to_accept_list),
4147 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4148 hci_cc_le_del_from_accept_list),
4149 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4150 sizeof(struct hci_rp_le_read_supported_states)),
4151 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4152 sizeof(struct hci_rp_le_read_def_data_len)),
4153 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4154 hci_cc_le_write_def_data_len),
4155 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4156 hci_cc_le_add_to_resolv_list),
4157 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4158 hci_cc_le_del_from_resolv_list),
4159 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4160 hci_cc_le_clear_resolv_list),
4161 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4162 sizeof(struct hci_rp_le_read_resolv_list_size)),
4163 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4164 hci_cc_le_set_addr_resolution_enable),
4165 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4166 sizeof(struct hci_rp_le_read_max_data_len)),
4167 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4168 hci_cc_write_le_host_supported),
4169 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4170 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4171 sizeof(struct hci_rp_read_rssi)),
4172 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4173 sizeof(struct hci_rp_read_tx_power)),
4174 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4175 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4176 hci_cc_le_set_ext_scan_param),
4177 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4178 hci_cc_le_set_ext_scan_enable),
4179 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4180 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4181 hci_cc_le_read_num_adv_sets,
4182 sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4183 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4184 sizeof(struct hci_rp_le_set_ext_adv_params)),
4185 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4186 hci_cc_le_set_ext_adv_enable),
4187 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4188 hci_cc_le_set_adv_set_random_addr),
4189 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4190 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4191 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4192 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4193 hci_cc_le_set_per_adv_enable),
4194 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4195 sizeof(struct hci_rp_le_read_transmit_power)),
4196 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4197 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4198 sizeof(struct hci_rp_le_read_buffer_size_v2)),
4199 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4200 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4201 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4202 sizeof(struct hci_rp_le_setup_iso_path)),
4203};
4204
4205static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4206 struct sk_buff *skb)
4207{
4208 void *data;
4209
4210 if (skb->len < cc->min_len) {
4211 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4212 cc->op, skb->len, cc->min_len);
4213 return HCI_ERROR_UNSPECIFIED;
4214 }
4215
4216 /* Just warn if the length is over max_len size it still be possible to
4217 * partially parse the cc so leave to callback to decide if that is
4218 * acceptable.
4219 */
4220 if (skb->len > cc->max_len)
4221 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4222 cc->op, skb->len, cc->max_len);
4223
4224 data = hci_cc_skb_pull(hdev, skb, op: cc->op, len: cc->min_len);
4225 if (!data)
4226 return HCI_ERROR_UNSPECIFIED;
4227
4228 return cc->func(hdev, data, skb);
4229}
4230
4231static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4232 struct sk_buff *skb, u16 *opcode, u8 *status,
4233 hci_req_complete_t *req_complete,
4234 hci_req_complete_skb_t *req_complete_skb)
4235{
4236 struct hci_ev_cmd_complete *ev = data;
4237 int i;
4238
4239 *opcode = __le16_to_cpu(ev->opcode);
4240
4241 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4242
4243 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4244 if (hci_cc_table[i].op == *opcode) {
4245 *status = hci_cc_func(hdev, cc: &hci_cc_table[i], skb);
4246 break;
4247 }
4248 }
4249
4250 if (i == ARRAY_SIZE(hci_cc_table)) {
4251 /* Unknown opcode, assume byte 0 contains the status, so
4252 * that e.g. __hci_cmd_sync() properly returns errors
4253 * for vendor specific commands send by HCI drivers.
4254 * If a vendor doesn't actually follow this convention we may
4255 * need to introduce a vendor CC table in order to properly set
4256 * the status.
4257 */
4258 *status = skb->data[0];
4259 }
4260
4261 handle_cmd_cnt_and_timer(hdev, ncmd: ev->ncmd);
4262
4263 hci_req_cmd_complete(hdev, opcode: *opcode, status: *status, req_complete,
4264 req_complete_skb);
4265
4266 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4267 bt_dev_err(hdev,
4268 "unexpected event for opcode 0x%4.4x", *opcode);
4269 return;
4270 }
4271
4272 if (atomic_read(v: &hdev->cmd_cnt) && !skb_queue_empty(list: &hdev->cmd_q))
4273 queue_work(wq: hdev->workqueue, work: &hdev->cmd_work);
4274}
4275
4276static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4277{
4278 struct hci_cp_le_create_cis *cp;
4279 bool pending = false;
4280 int i;
4281
4282 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4283
4284 if (!status)
4285 return;
4286
4287 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4288 if (!cp)
4289 return;
4290
4291 hci_dev_lock(hdev);
4292
4293 /* Remove connection if command failed */
4294 for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4295 struct hci_conn *conn;
4296 u16 handle;
4297
4298 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4299
4300 conn = hci_conn_hash_lookup_handle(hdev, handle);
4301 if (conn) {
4302 if (test_and_clear_bit(nr: HCI_CONN_CREATE_CIS,
4303 addr: &conn->flags))
4304 pending = true;
4305 conn->state = BT_CLOSED;
4306 hci_connect_cfm(conn, status);
4307 hci_conn_del(conn);
4308 }
4309 }
4310
4311 if (pending)
4312 hci_le_create_cis_pending(hdev);
4313
4314 hci_dev_unlock(hdev);
4315}
4316
4317#define HCI_CS(_op, _func) \
4318{ \
4319 .op = _op, \
4320 .func = _func, \
4321}
4322
4323static const struct hci_cs {
4324 u16 op;
4325 void (*func)(struct hci_dev *hdev, __u8 status);
4326} hci_cs_table[] = {
4327 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4328 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4329 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4330 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4331 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4332 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4333 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4334 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4335 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4336 hci_cs_read_remote_ext_features),
4337 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4338 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4339 hci_cs_enhanced_setup_sync_conn),
4340 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4341 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4342 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4343 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4344 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4345 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4346 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4347 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4348 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4349};
4350
4351static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4352 struct sk_buff *skb, u16 *opcode, u8 *status,
4353 hci_req_complete_t *req_complete,
4354 hci_req_complete_skb_t *req_complete_skb)
4355{
4356 struct hci_ev_cmd_status *ev = data;
4357 int i;
4358
4359 *opcode = __le16_to_cpu(ev->opcode);
4360 *status = ev->status;
4361
4362 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4363
4364 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4365 if (hci_cs_table[i].op == *opcode) {
4366 hci_cs_table[i].func(hdev, ev->status);
4367 break;
4368 }
4369 }
4370
4371 handle_cmd_cnt_and_timer(hdev, ncmd: ev->ncmd);
4372
4373 /* Indicate request completion if the command failed. Also, if
4374 * we're not waiting for a special event and we get a success
4375 * command status we should try to flag the request as completed
4376 * (since for this kind of commands there will not be a command
4377 * complete event).
4378 */
4379 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4380 hci_req_cmd_complete(hdev, opcode: *opcode, status: ev->status, req_complete,
4381 req_complete_skb);
4382 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4383 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4384 *opcode);
4385 return;
4386 }
4387 }
4388
4389 if (atomic_read(v: &hdev->cmd_cnt) && !skb_queue_empty(list: &hdev->cmd_q))
4390 queue_work(wq: hdev->workqueue, work: &hdev->cmd_work);
4391}
4392
4393static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4394 struct sk_buff *skb)
4395{
4396 struct hci_ev_hardware_error *ev = data;
4397
4398 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4399
4400 hdev->hw_error_code = ev->code;
4401
4402 queue_work(wq: hdev->req_workqueue, work: &hdev->error_reset);
4403}
4404
4405static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4406 struct sk_buff *skb)
4407{
4408 struct hci_ev_role_change *ev = data;
4409 struct hci_conn *conn;
4410
4411 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4412
4413 hci_dev_lock(hdev);
4414
4415 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
4416 if (conn) {
4417 if (!ev->status)
4418 conn->role = ev->role;
4419
4420 clear_bit(nr: HCI_CONN_RSWITCH_PEND, addr: &conn->flags);
4421
4422 hci_role_switch_cfm(conn, status: ev->status, role: ev->role);
4423 }
4424
4425 hci_dev_unlock(hdev);
4426}
4427
4428static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4429 struct sk_buff *skb)
4430{
4431 struct hci_ev_num_comp_pkts *ev = data;
4432 int i;
4433
4434 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4435 flex_array_size(ev, handles, ev->num)))
4436 return;
4437
4438 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4439 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4440 return;
4441 }
4442
4443 bt_dev_dbg(hdev, "num %d", ev->num);
4444
4445 for (i = 0; i < ev->num; i++) {
4446 struct hci_comp_pkts_info *info = &ev->handles[i];
4447 struct hci_conn *conn;
4448 __u16 handle, count;
4449
4450 handle = __le16_to_cpu(info->handle);
4451 count = __le16_to_cpu(info->count);
4452
4453 conn = hci_conn_hash_lookup_handle(hdev, handle);
4454 if (!conn)
4455 continue;
4456
4457 conn->sent -= count;
4458
4459 switch (conn->type) {
4460 case ACL_LINK:
4461 hdev->acl_cnt += count;
4462 if (hdev->acl_cnt > hdev->acl_pkts)
4463 hdev->acl_cnt = hdev->acl_pkts;
4464 break;
4465
4466 case LE_LINK:
4467 if (hdev->le_pkts) {
4468 hdev->le_cnt += count;
4469 if (hdev->le_cnt > hdev->le_pkts)
4470 hdev->le_cnt = hdev->le_pkts;
4471 } else {
4472 hdev->acl_cnt += count;
4473 if (hdev->acl_cnt > hdev->acl_pkts)
4474 hdev->acl_cnt = hdev->acl_pkts;
4475 }
4476 break;
4477
4478 case SCO_LINK:
4479 hdev->sco_cnt += count;
4480 if (hdev->sco_cnt > hdev->sco_pkts)
4481 hdev->sco_cnt = hdev->sco_pkts;
4482 break;
4483
4484 case ISO_LINK:
4485 if (hdev->iso_pkts) {
4486 hdev->iso_cnt += count;
4487 if (hdev->iso_cnt > hdev->iso_pkts)
4488 hdev->iso_cnt = hdev->iso_pkts;
4489 } else if (hdev->le_pkts) {
4490 hdev->le_cnt += count;
4491 if (hdev->le_cnt > hdev->le_pkts)
4492 hdev->le_cnt = hdev->le_pkts;
4493 } else {
4494 hdev->acl_cnt += count;
4495 if (hdev->acl_cnt > hdev->acl_pkts)
4496 hdev->acl_cnt = hdev->acl_pkts;
4497 }
4498 break;
4499
4500 default:
4501 bt_dev_err(hdev, "unknown type %d conn %p",
4502 conn->type, conn);
4503 break;
4504 }
4505 }
4506
4507 queue_work(wq: hdev->workqueue, work: &hdev->tx_work);
4508}
4509
4510static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4511 __u16 handle)
4512{
4513 struct hci_chan *chan;
4514
4515 switch (hdev->dev_type) {
4516 case HCI_PRIMARY:
4517 return hci_conn_hash_lookup_handle(hdev, handle);
4518 case HCI_AMP:
4519 chan = hci_chan_lookup_handle(hdev, handle);
4520 if (chan)
4521 return chan->conn;
4522 break;
4523 default:
4524 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4525 break;
4526 }
4527
4528 return NULL;
4529}
4530
4531static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4532 struct sk_buff *skb)
4533{
4534 struct hci_ev_num_comp_blocks *ev = data;
4535 int i;
4536
4537 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4538 flex_array_size(ev, handles, ev->num_hndl)))
4539 return;
4540
4541 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4542 bt_dev_err(hdev, "wrong event for mode %d",
4543 hdev->flow_ctl_mode);
4544 return;
4545 }
4546
4547 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4548 ev->num_hndl);
4549
4550 for (i = 0; i < ev->num_hndl; i++) {
4551 struct hci_comp_blocks_info *info = &ev->handles[i];
4552 struct hci_conn *conn = NULL;
4553 __u16 handle, block_count;
4554
4555 handle = __le16_to_cpu(info->handle);
4556 block_count = __le16_to_cpu(info->blocks);
4557
4558 conn = __hci_conn_lookup_handle(hdev, handle);
4559 if (!conn)
4560 continue;
4561
4562 conn->sent -= block_count;
4563
4564 switch (conn->type) {
4565 case ACL_LINK:
4566 case AMP_LINK:
4567 hdev->block_cnt += block_count;
4568 if (hdev->block_cnt > hdev->num_blocks)
4569 hdev->block_cnt = hdev->num_blocks;
4570 break;
4571
4572 default:
4573 bt_dev_err(hdev, "unknown type %d conn %p",
4574 conn->type, conn);
4575 break;
4576 }
4577 }
4578
4579 queue_work(wq: hdev->workqueue, work: &hdev->tx_work);
4580}
4581
4582static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4583 struct sk_buff *skb)
4584{
4585 struct hci_ev_mode_change *ev = data;
4586 struct hci_conn *conn;
4587
4588 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4589
4590 hci_dev_lock(hdev);
4591
4592 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4593 if (conn) {
4594 conn->mode = ev->mode;
4595
4596 if (!test_and_clear_bit(nr: HCI_CONN_MODE_CHANGE_PEND,
4597 addr: &conn->flags)) {
4598 if (conn->mode == HCI_CM_ACTIVE)
4599 set_bit(nr: HCI_CONN_POWER_SAVE, addr: &conn->flags);
4600 else
4601 clear_bit(nr: HCI_CONN_POWER_SAVE, addr: &conn->flags);
4602 }
4603
4604 if (test_and_clear_bit(nr: HCI_CONN_SCO_SETUP_PEND, addr: &conn->flags))
4605 hci_sco_setup(conn, status: ev->status);
4606 }
4607
4608 hci_dev_unlock(hdev);
4609}
4610
4611static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4612 struct sk_buff *skb)
4613{
4614 struct hci_ev_pin_code_req *ev = data;
4615 struct hci_conn *conn;
4616
4617 bt_dev_dbg(hdev, "");
4618
4619 hci_dev_lock(hdev);
4620
4621 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
4622 if (!conn)
4623 goto unlock;
4624
4625 if (conn->state == BT_CONNECTED) {
4626 hci_conn_hold(conn);
4627 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4628 hci_conn_drop(conn);
4629 }
4630
4631 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4632 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4633 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4634 plen: sizeof(ev->bdaddr), param: &ev->bdaddr);
4635 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4636 u8 secure;
4637
4638 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4639 secure = 1;
4640 else
4641 secure = 0;
4642
4643 mgmt_pin_code_request(hdev, bdaddr: &ev->bdaddr, secure);
4644 }
4645
4646unlock:
4647 hci_dev_unlock(hdev);
4648}
4649
4650static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4651{
4652 if (key_type == HCI_LK_CHANGED_COMBINATION)
4653 return;
4654
4655 conn->pin_length = pin_len;
4656 conn->key_type = key_type;
4657
4658 switch (key_type) {
4659 case HCI_LK_LOCAL_UNIT:
4660 case HCI_LK_REMOTE_UNIT:
4661 case HCI_LK_DEBUG_COMBINATION:
4662 return;
4663 case HCI_LK_COMBINATION:
4664 if (pin_len == 16)
4665 conn->pending_sec_level = BT_SECURITY_HIGH;
4666 else
4667 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4668 break;
4669 case HCI_LK_UNAUTH_COMBINATION_P192:
4670 case HCI_LK_UNAUTH_COMBINATION_P256:
4671 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4672 break;
4673 case HCI_LK_AUTH_COMBINATION_P192:
4674 conn->pending_sec_level = BT_SECURITY_HIGH;
4675 break;
4676 case HCI_LK_AUTH_COMBINATION_P256:
4677 conn->pending_sec_level = BT_SECURITY_FIPS;
4678 break;
4679 }
4680}
4681
4682static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4683 struct sk_buff *skb)
4684{
4685 struct hci_ev_link_key_req *ev = data;
4686 struct hci_cp_link_key_reply cp;
4687 struct hci_conn *conn;
4688 struct link_key *key;
4689
4690 bt_dev_dbg(hdev, "");
4691
4692 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4693 return;
4694
4695 hci_dev_lock(hdev);
4696
4697 key = hci_find_link_key(hdev, bdaddr: &ev->bdaddr);
4698 if (!key) {
4699 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4700 goto not_found;
4701 }
4702
4703 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4704
4705 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
4706 if (conn) {
4707 clear_bit(nr: HCI_CONN_NEW_LINK_KEY, addr: &conn->flags);
4708
4709 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4710 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4711 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4712 bt_dev_dbg(hdev, "ignoring unauthenticated key");
4713 goto not_found;
4714 }
4715
4716 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4717 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4718 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4719 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4720 goto not_found;
4721 }
4722
4723 conn_set_key(conn, key_type: key->type, pin_len: key->pin_len);
4724 }
4725
4726 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
4727 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4728
4729 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, plen: sizeof(cp), param: &cp);
4730
4731 hci_dev_unlock(hdev);
4732
4733 return;
4734
4735not_found:
4736 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, plen: 6, param: &ev->bdaddr);
4737 hci_dev_unlock(hdev);
4738}
4739
4740static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4741 struct sk_buff *skb)
4742{
4743 struct hci_ev_link_key_notify *ev = data;
4744 struct hci_conn *conn;
4745 struct link_key *key;
4746 bool persistent;
4747 u8 pin_len = 0;
4748
4749 bt_dev_dbg(hdev, "");
4750
4751 hci_dev_lock(hdev);
4752
4753 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
4754 if (!conn)
4755 goto unlock;
4756
4757 /* Ignore NULL link key against CVE-2020-26555 */
4758 if (!crypto_memneq(a: ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4759 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4760 &ev->bdaddr);
4761 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4762 hci_conn_drop(conn);
4763 goto unlock;
4764 }
4765
4766 hci_conn_hold(conn);
4767 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4768 hci_conn_drop(conn);
4769
4770 set_bit(nr: HCI_CONN_NEW_LINK_KEY, addr: &conn->flags);
4771 conn_set_key(conn, key_type: ev->key_type, pin_len: conn->pin_length);
4772
4773 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4774 goto unlock;
4775
4776 key = hci_add_link_key(hdev, conn, bdaddr: &ev->bdaddr, val: ev->link_key,
4777 type: ev->key_type, pin_len, persistent: &persistent);
4778 if (!key)
4779 goto unlock;
4780
4781 /* Update connection information since adding the key will have
4782 * fixed up the type in the case of changed combination keys.
4783 */
4784 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4785 conn_set_key(conn, key_type: key->type, pin_len: key->pin_len);
4786
4787 mgmt_new_link_key(hdev, key, persistent);
4788
4789 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4790 * is set. If it's not set simply remove the key from the kernel
4791 * list (we've still notified user space about it but with
4792 * store_hint being 0).
4793 */
4794 if (key->type == HCI_LK_DEBUG_COMBINATION &&
4795 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4796 list_del_rcu(entry: &key->list);
4797 kfree_rcu(key, rcu);
4798 goto unlock;
4799 }
4800
4801 if (persistent)
4802 clear_bit(nr: HCI_CONN_FLUSH_KEY, addr: &conn->flags);
4803 else
4804 set_bit(nr: HCI_CONN_FLUSH_KEY, addr: &conn->flags);
4805
4806unlock:
4807 hci_dev_unlock(hdev);
4808}
4809
4810static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4811 struct sk_buff *skb)
4812{
4813 struct hci_ev_clock_offset *ev = data;
4814 struct hci_conn *conn;
4815
4816 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4817
4818 hci_dev_lock(hdev);
4819
4820 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4821 if (conn && !ev->status) {
4822 struct inquiry_entry *ie;
4823
4824 ie = hci_inquiry_cache_lookup(hdev, bdaddr: &conn->dst);
4825 if (ie) {
4826 ie->data.clock_offset = ev->clock_offset;
4827 ie->timestamp = jiffies;
4828 }
4829 }
4830
4831 hci_dev_unlock(hdev);
4832}
4833
4834static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4835 struct sk_buff *skb)
4836{
4837 struct hci_ev_pkt_type_change *ev = data;
4838 struct hci_conn *conn;
4839
4840 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4841
4842 hci_dev_lock(hdev);
4843
4844 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4845 if (conn && !ev->status)
4846 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4847
4848 hci_dev_unlock(hdev);
4849}
4850
4851static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4852 struct sk_buff *skb)
4853{
4854 struct hci_ev_pscan_rep_mode *ev = data;
4855 struct inquiry_entry *ie;
4856
4857 bt_dev_dbg(hdev, "");
4858
4859 hci_dev_lock(hdev);
4860
4861 ie = hci_inquiry_cache_lookup(hdev, bdaddr: &ev->bdaddr);
4862 if (ie) {
4863 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4864 ie->timestamp = jiffies;
4865 }
4866
4867 hci_dev_unlock(hdev);
4868}
4869
4870static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4871 struct sk_buff *skb)
4872{
4873 struct hci_ev_inquiry_result_rssi *ev = edata;
4874 struct inquiry_data data;
4875 int i;
4876
4877 bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4878
4879 if (!ev->num)
4880 return;
4881
4882 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4883 return;
4884
4885 hci_dev_lock(hdev);
4886
4887 if (skb->len == array_size(ev->num,
4888 sizeof(struct inquiry_info_rssi_pscan))) {
4889 struct inquiry_info_rssi_pscan *info;
4890
4891 for (i = 0; i < ev->num; i++) {
4892 u32 flags;
4893
4894 info = hci_ev_skb_pull(hdev, skb,
4895 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4896 len: sizeof(*info));
4897 if (!info) {
4898 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4899 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4900 goto unlock;
4901 }
4902
4903 bacpy(dst: &data.bdaddr, src: &info->bdaddr);
4904 data.pscan_rep_mode = info->pscan_rep_mode;
4905 data.pscan_period_mode = info->pscan_period_mode;
4906 data.pscan_mode = info->pscan_mode;
4907 memcpy(data.dev_class, info->dev_class, 3);
4908 data.clock_offset = info->clock_offset;
4909 data.rssi = info->rssi;
4910 data.ssp_mode = 0x00;
4911
4912 flags = hci_inquiry_cache_update(hdev, data: &data, name_known: false);
4913
4914 mgmt_device_found(hdev, bdaddr: &info->bdaddr, ACL_LINK, addr_type: 0x00,
4915 dev_class: info->dev_class, rssi: info->rssi,
4916 flags, NULL, eir_len: 0, NULL, scan_rsp_len: 0, instant: 0);
4917 }
4918 } else if (skb->len == array_size(ev->num,
4919 sizeof(struct inquiry_info_rssi))) {
4920 struct inquiry_info_rssi *info;
4921
4922 for (i = 0; i < ev->num; i++) {
4923 u32 flags;
4924
4925 info = hci_ev_skb_pull(hdev, skb,
4926 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4927 len: sizeof(*info));
4928 if (!info) {
4929 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4930 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4931 goto unlock;
4932 }
4933
4934 bacpy(dst: &data.bdaddr, src: &info->bdaddr);
4935 data.pscan_rep_mode = info->pscan_rep_mode;
4936 data.pscan_period_mode = info->pscan_period_mode;
4937 data.pscan_mode = 0x00;
4938 memcpy(data.dev_class, info->dev_class, 3);
4939 data.clock_offset = info->clock_offset;
4940 data.rssi = info->rssi;
4941 data.ssp_mode = 0x00;
4942
4943 flags = hci_inquiry_cache_update(hdev, data: &data, name_known: false);
4944
4945 mgmt_device_found(hdev, bdaddr: &info->bdaddr, ACL_LINK, addr_type: 0x00,
4946 dev_class: info->dev_class, rssi: info->rssi,
4947 flags, NULL, eir_len: 0, NULL, scan_rsp_len: 0, instant: 0);
4948 }
4949 } else {
4950 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4951 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4952 }
4953unlock:
4954 hci_dev_unlock(hdev);
4955}
4956
4957static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4958 struct sk_buff *skb)
4959{
4960 struct hci_ev_remote_ext_features *ev = data;
4961 struct hci_conn *conn;
4962
4963 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4964
4965 hci_dev_lock(hdev);
4966
4967 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4968 if (!conn)
4969 goto unlock;
4970
4971 if (ev->page < HCI_MAX_PAGES)
4972 memcpy(conn->features[ev->page], ev->features, 8);
4973
4974 if (!ev->status && ev->page == 0x01) {
4975 struct inquiry_entry *ie;
4976
4977 ie = hci_inquiry_cache_lookup(hdev, bdaddr: &conn->dst);
4978 if (ie)
4979 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4980
4981 if (ev->features[0] & LMP_HOST_SSP) {
4982 set_bit(nr: HCI_CONN_SSP_ENABLED, addr: &conn->flags);
4983 } else {
4984 /* It is mandatory by the Bluetooth specification that
4985 * Extended Inquiry Results are only used when Secure
4986 * Simple Pairing is enabled, but some devices violate
4987 * this.
4988 *
4989 * To make these devices work, the internal SSP
4990 * enabled flag needs to be cleared if the remote host
4991 * features do not indicate SSP support */
4992 clear_bit(nr: HCI_CONN_SSP_ENABLED, addr: &conn->flags);
4993 }
4994
4995 if (ev->features[0] & LMP_HOST_SC)
4996 set_bit(nr: HCI_CONN_SC_ENABLED, addr: &conn->flags);
4997 }
4998
4999 if (conn->state != BT_CONFIG)
5000 goto unlock;
5001
5002 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5003 struct hci_cp_remote_name_req cp;
5004 memset(&cp, 0, sizeof(cp));
5005 bacpy(dst: &cp.bdaddr, src: &conn->dst);
5006 cp.pscan_rep_mode = 0x02;
5007 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, plen: sizeof(cp), param: &cp);
5008 } else if (!test_and_set_bit(nr: HCI_CONN_MGMT_CONNECTED, addr: &conn->flags))
5009 mgmt_device_connected(hdev, conn, NULL, name_len: 0);
5010
5011 if (!hci_outgoing_auth_needed(hdev, conn)) {
5012 conn->state = BT_CONNECTED;
5013 hci_connect_cfm(conn, status: ev->status);
5014 hci_conn_drop(conn);
5015 }
5016
5017unlock:
5018 hci_dev_unlock(hdev);
5019}
5020
5021static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5022 struct sk_buff *skb)
5023{
5024 struct hci_ev_sync_conn_complete *ev = data;
5025 struct hci_conn *conn;
5026 u8 status = ev->status;
5027
5028 switch (ev->link_type) {
5029 case SCO_LINK:
5030 case ESCO_LINK:
5031 break;
5032 default:
5033 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5034 * for HCI_Synchronous_Connection_Complete is limited to
5035 * either SCO or eSCO
5036 */
5037 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5038 return;
5039 }
5040
5041 bt_dev_dbg(hdev, "status 0x%2.2x", status);
5042
5043 hci_dev_lock(hdev);
5044
5045 conn = hci_conn_hash_lookup_ba(hdev, type: ev->link_type, ba: &ev->bdaddr);
5046 if (!conn) {
5047 if (ev->link_type == ESCO_LINK)
5048 goto unlock;
5049
5050 /* When the link type in the event indicates SCO connection
5051 * and lookup of the connection object fails, then check
5052 * if an eSCO connection object exists.
5053 *
5054 * The core limits the synchronous connections to either
5055 * SCO or eSCO. The eSCO connection is preferred and tried
5056 * to be setup first and until successfully established,
5057 * the link type will be hinted as eSCO.
5058 */
5059 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, ba: &ev->bdaddr);
5060 if (!conn)
5061 goto unlock;
5062 }
5063
5064 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5065 * Processing it more than once per connection can corrupt kernel memory.
5066 *
5067 * As the connection handle is set here for the first time, it indicates
5068 * whether the connection is already set up.
5069 */
5070 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5071 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5072 goto unlock;
5073 }
5074
5075 switch (status) {
5076 case 0x00:
5077 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5078 if (status) {
5079 conn->state = BT_CLOSED;
5080 break;
5081 }
5082
5083 conn->state = BT_CONNECTED;
5084 conn->type = ev->link_type;
5085
5086 hci_debugfs_create_conn(conn);
5087 hci_conn_add_sysfs(conn);
5088 break;
5089
5090 case 0x10: /* Connection Accept Timeout */
5091 case 0x0d: /* Connection Rejected due to Limited Resources */
5092 case 0x11: /* Unsupported Feature or Parameter Value */
5093 case 0x1c: /* SCO interval rejected */
5094 case 0x1a: /* Unsupported Remote Feature */
5095 case 0x1e: /* Invalid LMP Parameters */
5096 case 0x1f: /* Unspecified error */
5097 case 0x20: /* Unsupported LMP Parameter value */
5098 if (conn->out) {
5099 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5100 (hdev->esco_type & EDR_ESCO_MASK);
5101 if (hci_setup_sync(conn, handle: conn->parent->handle))
5102 goto unlock;
5103 }
5104 fallthrough;
5105
5106 default:
5107 conn->state = BT_CLOSED;
5108 break;
5109 }
5110
5111 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5112 /* Notify only in case of SCO over HCI transport data path which
5113 * is zero and non-zero value shall be non-HCI transport data path
5114 */
5115 if (conn->codec.data_path == 0 && hdev->notify) {
5116 switch (ev->air_mode) {
5117 case 0x02:
5118 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5119 break;
5120 case 0x03:
5121 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5122 break;
5123 }
5124 }
5125
5126 hci_connect_cfm(conn, status);
5127 if (status)
5128 hci_conn_del(conn);
5129
5130unlock:
5131 hci_dev_unlock(hdev);
5132}
5133
5134static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5135{
5136 size_t parsed = 0;
5137
5138 while (parsed < eir_len) {
5139 u8 field_len = eir[0];
5140
5141 if (field_len == 0)
5142 return parsed;
5143
5144 parsed += field_len + 1;
5145 eir += field_len + 1;
5146 }
5147
5148 return eir_len;
5149}
5150
5151static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5152 struct sk_buff *skb)
5153{
5154 struct hci_ev_ext_inquiry_result *ev = edata;
5155 struct inquiry_data data;
5156 size_t eir_len;
5157 int i;
5158
5159 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5160 flex_array_size(ev, info, ev->num)))
5161 return;
5162
5163 bt_dev_dbg(hdev, "num %d", ev->num);
5164
5165 if (!ev->num)
5166 return;
5167
5168 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5169 return;
5170
5171 hci_dev_lock(hdev);
5172
5173 for (i = 0; i < ev->num; i++) {
5174 struct extended_inquiry_info *info = &ev->info[i];
5175 u32 flags;
5176 bool name_known;
5177
5178 bacpy(dst: &data.bdaddr, src: &info->bdaddr);
5179 data.pscan_rep_mode = info->pscan_rep_mode;
5180 data.pscan_period_mode = info->pscan_period_mode;
5181 data.pscan_mode = 0x00;
5182 memcpy(data.dev_class, info->dev_class, 3);
5183 data.clock_offset = info->clock_offset;
5184 data.rssi = info->rssi;
5185 data.ssp_mode = 0x01;
5186
5187 if (hci_dev_test_flag(hdev, HCI_MGMT))
5188 name_known = eir_get_data(eir: info->data,
5189 eir_len: sizeof(info->data),
5190 EIR_NAME_COMPLETE, NULL);
5191 else
5192 name_known = true;
5193
5194 flags = hci_inquiry_cache_update(hdev, data: &data, name_known);
5195
5196 eir_len = eir_get_length(eir: info->data, eir_len: sizeof(info->data));
5197
5198 mgmt_device_found(hdev, bdaddr: &info->bdaddr, ACL_LINK, addr_type: 0x00,
5199 dev_class: info->dev_class, rssi: info->rssi,
5200 flags, eir: info->data, eir_len, NULL, scan_rsp_len: 0, instant: 0);
5201 }
5202
5203 hci_dev_unlock(hdev);
5204}
5205
5206static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5207 struct sk_buff *skb)
5208{
5209 struct hci_ev_key_refresh_complete *ev = data;
5210 struct hci_conn *conn;
5211
5212 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5213 __le16_to_cpu(ev->handle));
5214
5215 hci_dev_lock(hdev);
5216
5217 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5218 if (!conn)
5219 goto unlock;
5220
5221 /* For BR/EDR the necessary steps are taken through the
5222 * auth_complete event.
5223 */
5224 if (conn->type != LE_LINK)
5225 goto unlock;
5226
5227 if (!ev->status)
5228 conn->sec_level = conn->pending_sec_level;
5229
5230 clear_bit(nr: HCI_CONN_ENCRYPT_PEND, addr: &conn->flags);
5231
5232 if (ev->status && conn->state == BT_CONNECTED) {
5233 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5234 hci_conn_drop(conn);
5235 goto unlock;
5236 }
5237
5238 if (conn->state == BT_CONFIG) {
5239 if (!ev->status)
5240 conn->state = BT_CONNECTED;
5241
5242 hci_connect_cfm(conn, status: ev->status);
5243 hci_conn_drop(conn);
5244 } else {
5245 hci_auth_cfm(conn, status: ev->status);
5246
5247 hci_conn_hold(conn);
5248 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5249 hci_conn_drop(conn);
5250 }
5251
5252unlock:
5253 hci_dev_unlock(hdev);
5254}
5255
5256static u8 hci_get_auth_req(struct hci_conn *conn)
5257{
5258 /* If remote requests no-bonding follow that lead */
5259 if (conn->remote_auth == HCI_AT_NO_BONDING ||
5260 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5261 return conn->remote_auth | (conn->auth_type & 0x01);
5262
5263 /* If both remote and local have enough IO capabilities, require
5264 * MITM protection
5265 */
5266 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5267 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5268 return conn->remote_auth | 0x01;
5269
5270 /* No MITM protection possible so ignore remote requirement */
5271 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5272}
5273
5274static u8 bredr_oob_data_present(struct hci_conn *conn)
5275{
5276 struct hci_dev *hdev = conn->hdev;
5277 struct oob_data *data;
5278
5279 data = hci_find_remote_oob_data(hdev, bdaddr: &conn->dst, BDADDR_BREDR);
5280 if (!data)
5281 return 0x00;
5282
5283 if (bredr_sc_enabled(hdev)) {
5284 /* When Secure Connections is enabled, then just
5285 * return the present value stored with the OOB
5286 * data. The stored value contains the right present
5287 * information. However it can only be trusted when
5288 * not in Secure Connection Only mode.
5289 */
5290 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5291 return data->present;
5292
5293 /* When Secure Connections Only mode is enabled, then
5294 * the P-256 values are required. If they are not
5295 * available, then do not declare that OOB data is
5296 * present.
5297 */
5298 if (!crypto_memneq(a: data->rand256, ZERO_KEY, size: 16) ||
5299 !crypto_memneq(a: data->hash256, ZERO_KEY, size: 16))
5300 return 0x00;
5301
5302 return 0x02;
5303 }
5304
5305 /* When Secure Connections is not enabled or actually
5306 * not supported by the hardware, then check that if
5307 * P-192 data values are present.
5308 */
5309 if (!crypto_memneq(a: data->rand192, ZERO_KEY, size: 16) ||
5310 !crypto_memneq(a: data->hash192, ZERO_KEY, size: 16))
5311 return 0x00;
5312
5313 return 0x01;
5314}
5315
5316static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5317 struct sk_buff *skb)
5318{
5319 struct hci_ev_io_capa_request *ev = data;
5320 struct hci_conn *conn;
5321
5322 bt_dev_dbg(hdev, "");
5323
5324 hci_dev_lock(hdev);
5325
5326 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5327 if (!conn || !hci_conn_ssp_enabled(conn))
5328 goto unlock;
5329
5330 hci_conn_hold(conn);
5331
5332 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5333 goto unlock;
5334
5335 /* Allow pairing if we're pairable, the initiators of the
5336 * pairing or if the remote is not requesting bonding.
5337 */
5338 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5339 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5340 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5341 struct hci_cp_io_capability_reply cp;
5342
5343 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
5344 /* Change the IO capability from KeyboardDisplay
5345 * to DisplayYesNo as it is not supported by BT spec. */
5346 cp.capability = (conn->io_capability == 0x04) ?
5347 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5348
5349 /* If we are initiators, there is no remote information yet */
5350 if (conn->remote_auth == 0xff) {
5351 /* Request MITM protection if our IO caps allow it
5352 * except for the no-bonding case.
5353 */
5354 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5355 conn->auth_type != HCI_AT_NO_BONDING)
5356 conn->auth_type |= 0x01;
5357 } else {
5358 conn->auth_type = hci_get_auth_req(conn);
5359 }
5360
5361 /* If we're not bondable, force one of the non-bondable
5362 * authentication requirement values.
5363 */
5364 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5365 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5366
5367 cp.authentication = conn->auth_type;
5368 cp.oob_data = bredr_oob_data_present(conn);
5369
5370 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5371 plen: sizeof(cp), param: &cp);
5372 } else {
5373 struct hci_cp_io_capability_neg_reply cp;
5374
5375 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
5376 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5377
5378 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5379 plen: sizeof(cp), param: &cp);
5380 }
5381
5382unlock:
5383 hci_dev_unlock(hdev);
5384}
5385
5386static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5387 struct sk_buff *skb)
5388{
5389 struct hci_ev_io_capa_reply *ev = data;
5390 struct hci_conn *conn;
5391
5392 bt_dev_dbg(hdev, "");
5393
5394 hci_dev_lock(hdev);
5395
5396 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5397 if (!conn)
5398 goto unlock;
5399
5400 conn->remote_cap = ev->capability;
5401 conn->remote_auth = ev->authentication;
5402
5403unlock:
5404 hci_dev_unlock(hdev);
5405}
5406
5407static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5408 struct sk_buff *skb)
5409{
5410 struct hci_ev_user_confirm_req *ev = data;
5411 int loc_mitm, rem_mitm, confirm_hint = 0;
5412 struct hci_conn *conn;
5413
5414 bt_dev_dbg(hdev, "");
5415
5416 hci_dev_lock(hdev);
5417
5418 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5419 goto unlock;
5420
5421 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5422 if (!conn)
5423 goto unlock;
5424
5425 loc_mitm = (conn->auth_type & 0x01);
5426 rem_mitm = (conn->remote_auth & 0x01);
5427
5428 /* If we require MITM but the remote device can't provide that
5429 * (it has NoInputNoOutput) then reject the confirmation
5430 * request. We check the security level here since it doesn't
5431 * necessarily match conn->auth_type.
5432 */
5433 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5434 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5435 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5436 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5437 plen: sizeof(ev->bdaddr), param: &ev->bdaddr);
5438 goto unlock;
5439 }
5440
5441 /* If no side requires MITM protection; auto-accept */
5442 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5443 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5444
5445 /* If we're not the initiators request authorization to
5446 * proceed from user space (mgmt_user_confirm with
5447 * confirm_hint set to 1). The exception is if neither
5448 * side had MITM or if the local IO capability is
5449 * NoInputNoOutput, in which case we do auto-accept
5450 */
5451 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5452 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5453 (loc_mitm || rem_mitm)) {
5454 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5455 confirm_hint = 1;
5456 goto confirm;
5457 }
5458
5459 /* If there already exists link key in local host, leave the
5460 * decision to user space since the remote device could be
5461 * legitimate or malicious.
5462 */
5463 if (hci_find_link_key(hdev, bdaddr: &ev->bdaddr)) {
5464 bt_dev_dbg(hdev, "Local host already has link key");
5465 confirm_hint = 1;
5466 goto confirm;
5467 }
5468
5469 BT_DBG("Auto-accept of user confirmation with %ums delay",
5470 hdev->auto_accept_delay);
5471
5472 if (hdev->auto_accept_delay > 0) {
5473 int delay = msecs_to_jiffies(m: hdev->auto_accept_delay);
5474 queue_delayed_work(wq: conn->hdev->workqueue,
5475 dwork: &conn->auto_accept_work, delay);
5476 goto unlock;
5477 }
5478
5479 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5480 plen: sizeof(ev->bdaddr), param: &ev->bdaddr);
5481 goto unlock;
5482 }
5483
5484confirm:
5485 mgmt_user_confirm_request(hdev, bdaddr: &ev->bdaddr, ACL_LINK, addr_type: 0,
5486 le32_to_cpu(ev->passkey), confirm_hint);
5487
5488unlock:
5489 hci_dev_unlock(hdev);
5490}
5491
5492static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5493 struct sk_buff *skb)
5494{
5495 struct hci_ev_user_passkey_req *ev = data;
5496
5497 bt_dev_dbg(hdev, "");
5498
5499 if (hci_dev_test_flag(hdev, HCI_MGMT))
5500 mgmt_user_passkey_request(hdev, bdaddr: &ev->bdaddr, ACL_LINK, addr_type: 0);
5501}
5502
5503static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5504 struct sk_buff *skb)
5505{
5506 struct hci_ev_user_passkey_notify *ev = data;
5507 struct hci_conn *conn;
5508
5509 bt_dev_dbg(hdev, "");
5510
5511 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5512 if (!conn)
5513 return;
5514
5515 conn->passkey_notify = __le32_to_cpu(ev->passkey);
5516 conn->passkey_entered = 0;
5517
5518 if (hci_dev_test_flag(hdev, HCI_MGMT))
5519 mgmt_user_passkey_notify(hdev, bdaddr: &conn->dst, link_type: conn->type,
5520 addr_type: conn->dst_type, passkey: conn->passkey_notify,
5521 entered: conn->passkey_entered);
5522}
5523
5524static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5525 struct sk_buff *skb)
5526{
5527 struct hci_ev_keypress_notify *ev = data;
5528 struct hci_conn *conn;
5529
5530 bt_dev_dbg(hdev, "");
5531
5532 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5533 if (!conn)
5534 return;
5535
5536 switch (ev->type) {
5537 case HCI_KEYPRESS_STARTED:
5538 conn->passkey_entered = 0;
5539 return;
5540
5541 case HCI_KEYPRESS_ENTERED:
5542 conn->passkey_entered++;
5543 break;
5544
5545 case HCI_KEYPRESS_ERASED:
5546 conn->passkey_entered--;
5547 break;
5548
5549 case HCI_KEYPRESS_CLEARED:
5550 conn->passkey_entered = 0;
5551 break;
5552
5553 case HCI_KEYPRESS_COMPLETED:
5554 return;
5555 }
5556
5557 if (hci_dev_test_flag(hdev, HCI_MGMT))
5558 mgmt_user_passkey_notify(hdev, bdaddr: &conn->dst, link_type: conn->type,
5559 addr_type: conn->dst_type, passkey: conn->passkey_notify,
5560 entered: conn->passkey_entered);
5561}
5562
5563static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5564 struct sk_buff *skb)
5565{
5566 struct hci_ev_simple_pair_complete *ev = data;
5567 struct hci_conn *conn;
5568
5569 bt_dev_dbg(hdev, "");
5570
5571 hci_dev_lock(hdev);
5572
5573 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5574 if (!conn || !hci_conn_ssp_enabled(conn))
5575 goto unlock;
5576
5577 /* Reset the authentication requirement to unknown */
5578 conn->remote_auth = 0xff;
5579
5580 /* To avoid duplicate auth_failed events to user space we check
5581 * the HCI_CONN_AUTH_PEND flag which will be set if we
5582 * initiated the authentication. A traditional auth_complete
5583 * event gets always produced as initiator and is also mapped to
5584 * the mgmt_auth_failed event */
5585 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5586 mgmt_auth_failed(conn, status: ev->status);
5587
5588 hci_conn_drop(conn);
5589
5590unlock:
5591 hci_dev_unlock(hdev);
5592}
5593
5594static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5595 struct sk_buff *skb)
5596{
5597 struct hci_ev_remote_host_features *ev = data;
5598 struct inquiry_entry *ie;
5599 struct hci_conn *conn;
5600
5601 bt_dev_dbg(hdev, "");
5602
5603 hci_dev_lock(hdev);
5604
5605 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, ba: &ev->bdaddr);
5606 if (conn)
5607 memcpy(conn->features[1], ev->features, 8);
5608
5609 ie = hci_inquiry_cache_lookup(hdev, bdaddr: &ev->bdaddr);
5610 if (ie)
5611 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5612
5613 hci_dev_unlock(hdev);
5614}
5615
5616static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5617 struct sk_buff *skb)
5618{
5619 struct hci_ev_remote_oob_data_request *ev = edata;
5620 struct oob_data *data;
5621
5622 bt_dev_dbg(hdev, "");
5623
5624 hci_dev_lock(hdev);
5625
5626 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5627 goto unlock;
5628
5629 data = hci_find_remote_oob_data(hdev, bdaddr: &ev->bdaddr, BDADDR_BREDR);
5630 if (!data) {
5631 struct hci_cp_remote_oob_data_neg_reply cp;
5632
5633 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
5634 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5635 plen: sizeof(cp), param: &cp);
5636 goto unlock;
5637 }
5638
5639 if (bredr_sc_enabled(hdev)) {
5640 struct hci_cp_remote_oob_ext_data_reply cp;
5641
5642 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
5643 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5644 memset(cp.hash192, 0, sizeof(cp.hash192));
5645 memset(cp.rand192, 0, sizeof(cp.rand192));
5646 } else {
5647 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5648 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5649 }
5650 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5651 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5652
5653 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5654 plen: sizeof(cp), param: &cp);
5655 } else {
5656 struct hci_cp_remote_oob_data_reply cp;
5657
5658 bacpy(dst: &cp.bdaddr, src: &ev->bdaddr);
5659 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5660 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5661
5662 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5663 plen: sizeof(cp), param: &cp);
5664 }
5665
5666unlock:
5667 hci_dev_unlock(hdev);
5668}
5669
5670#if IS_ENABLED(CONFIG_BT_HS)
5671static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5672 struct sk_buff *skb)
5673{
5674 struct hci_ev_channel_selected *ev = data;
5675 struct hci_conn *hcon;
5676
5677 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5678
5679 hcon = hci_conn_hash_lookup_handle(hdev, handle: ev->phy_handle);
5680 if (!hcon)
5681 return;
5682
5683 amp_read_loc_assoc_final_data(hdev, hcon);
5684}
5685
5686static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5687 struct sk_buff *skb)
5688{
5689 struct hci_ev_phy_link_complete *ev = data;
5690 struct hci_conn *hcon, *bredr_hcon;
5691
5692 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5693 ev->status);
5694
5695 hci_dev_lock(hdev);
5696
5697 hcon = hci_conn_hash_lookup_handle(hdev, handle: ev->phy_handle);
5698 if (!hcon)
5699 goto unlock;
5700
5701 if (!hcon->amp_mgr)
5702 goto unlock;
5703
5704 if (ev->status) {
5705 hci_conn_del(conn: hcon);
5706 goto unlock;
5707 }
5708
5709 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5710
5711 hcon->state = BT_CONNECTED;
5712 bacpy(dst: &hcon->dst, src: &bredr_hcon->dst);
5713
5714 hci_conn_hold(conn: hcon);
5715 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5716 hci_conn_drop(conn: hcon);
5717
5718 hci_debugfs_create_conn(conn: hcon);
5719 hci_conn_add_sysfs(conn: hcon);
5720
5721 amp_physical_cfm(bredr_hcon, hs_hcon: hcon);
5722
5723unlock:
5724 hci_dev_unlock(hdev);
5725}
5726
5727static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5728 struct sk_buff *skb)
5729{
5730 struct hci_ev_logical_link_complete *ev = data;
5731 struct hci_conn *hcon;
5732 struct hci_chan *hchan;
5733 struct amp_mgr *mgr;
5734
5735 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5736 le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5737
5738 hcon = hci_conn_hash_lookup_handle(hdev, handle: ev->phy_handle);
5739 if (!hcon)
5740 return;
5741
5742 /* Create AMP hchan */
5743 hchan = hci_chan_create(conn: hcon);
5744 if (!hchan)
5745 return;
5746
5747 hchan->handle = le16_to_cpu(ev->handle);
5748 hchan->amp = true;
5749
5750 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5751
5752 mgr = hcon->amp_mgr;
5753 if (mgr && mgr->bredr_chan) {
5754 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5755
5756 l2cap_chan_lock(chan: bredr_chan);
5757
5758 bredr_chan->conn->mtu = hdev->block_mtu;
5759 l2cap_logical_cfm(chan: bredr_chan, hchan, status: 0);
5760 hci_conn_hold(conn: hcon);
5761
5762 l2cap_chan_unlock(chan: bredr_chan);
5763 }
5764}
5765
5766static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5767 struct sk_buff *skb)
5768{
5769 struct hci_ev_disconn_logical_link_complete *ev = data;
5770 struct hci_chan *hchan;
5771
5772 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5773 le16_to_cpu(ev->handle), ev->status);
5774
5775 if (ev->status)
5776 return;
5777
5778 hci_dev_lock(hdev);
5779
5780 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5781 if (!hchan || !hchan->amp)
5782 goto unlock;
5783
5784 amp_destroy_logical_link(hchan, reason: ev->reason);
5785
5786unlock:
5787 hci_dev_unlock(hdev);
5788}
5789
5790static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5791 struct sk_buff *skb)
5792{
5793 struct hci_ev_disconn_phy_link_complete *ev = data;
5794 struct hci_conn *hcon;
5795
5796 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5797
5798 if (ev->status)
5799 return;
5800
5801 hci_dev_lock(hdev);
5802
5803 hcon = hci_conn_hash_lookup_handle(hdev, handle: ev->phy_handle);
5804 if (hcon && hcon->type == AMP_LINK) {
5805 hcon->state = BT_CLOSED;
5806 hci_disconn_cfm(conn: hcon, reason: ev->reason);
5807 hci_conn_del(conn: hcon);
5808 }
5809
5810 hci_dev_unlock(hdev);
5811}
5812#endif
5813
5814static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5815 u8 bdaddr_type, bdaddr_t *local_rpa)
5816{
5817 if (conn->out) {
5818 conn->dst_type = bdaddr_type;
5819 conn->resp_addr_type = bdaddr_type;
5820 bacpy(dst: &conn->resp_addr, src: bdaddr);
5821
5822 /* Check if the controller has set a Local RPA then it must be
5823 * used instead or hdev->rpa.
5824 */
5825 if (local_rpa && bacmp(ba1: local_rpa, BDADDR_ANY)) {
5826 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5827 bacpy(dst: &conn->init_addr, src: local_rpa);
5828 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5829 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5830 bacpy(dst: &conn->init_addr, src: &conn->hdev->rpa);
5831 } else {
5832 hci_copy_identity_address(hdev: conn->hdev, bdaddr: &conn->init_addr,
5833 bdaddr_type: &conn->init_addr_type);
5834 }
5835 } else {
5836 conn->resp_addr_type = conn->hdev->adv_addr_type;
5837 /* Check if the controller has set a Local RPA then it must be
5838 * used instead or hdev->rpa.
5839 */
5840 if (local_rpa && bacmp(ba1: local_rpa, BDADDR_ANY)) {
5841 conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5842 bacpy(dst: &conn->resp_addr, src: local_rpa);
5843 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5844 /* In case of ext adv, resp_addr will be updated in
5845 * Adv Terminated event.
5846 */
5847 if (!ext_adv_capable(conn->hdev))
5848 bacpy(dst: &conn->resp_addr,
5849 src: &conn->hdev->random_addr);
5850 } else {
5851 bacpy(dst: &conn->resp_addr, src: &conn->hdev->bdaddr);
5852 }
5853
5854 conn->init_addr_type = bdaddr_type;
5855 bacpy(dst: &conn->init_addr, src: bdaddr);
5856
5857 /* For incoming connections, set the default minimum
5858 * and maximum connection interval. They will be used
5859 * to check if the parameters are in range and if not
5860 * trigger the connection update procedure.
5861 */
5862 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5863 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5864 }
5865}
5866
5867static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5868 bdaddr_t *bdaddr, u8 bdaddr_type,
5869 bdaddr_t *local_rpa, u8 role, u16 handle,
5870 u16 interval, u16 latency,
5871 u16 supervision_timeout)
5872{
5873 struct hci_conn_params *params;
5874 struct hci_conn *conn;
5875 struct smp_irk *irk;
5876 u8 addr_type;
5877
5878 hci_dev_lock(hdev);
5879
5880 /* All controllers implicitly stop advertising in the event of a
5881 * connection, so ensure that the state bit is cleared.
5882 */
5883 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5884
5885 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, ba: bdaddr);
5886 if (!conn) {
5887 /* In case of error status and there is no connection pending
5888 * just unlock as there is nothing to cleanup.
5889 */
5890 if (status)
5891 goto unlock;
5892
5893 conn = hci_conn_add_unset(hdev, LE_LINK, dst: bdaddr, role);
5894 if (!conn) {
5895 bt_dev_err(hdev, "no memory for new connection");
5896 goto unlock;
5897 }
5898
5899 conn->dst_type = bdaddr_type;
5900
5901 /* If we didn't have a hci_conn object previously
5902 * but we're in central role this must be something
5903 * initiated using an accept list. Since accept list based
5904 * connections are not "first class citizens" we don't
5905 * have full tracking of them. Therefore, we go ahead
5906 * with a "best effort" approach of determining the
5907 * initiator address based on the HCI_PRIVACY flag.
5908 */
5909 if (conn->out) {
5910 conn->resp_addr_type = bdaddr_type;
5911 bacpy(dst: &conn->resp_addr, src: bdaddr);
5912 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5913 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5914 bacpy(dst: &conn->init_addr, src: &hdev->rpa);
5915 } else {
5916 hci_copy_identity_address(hdev,
5917 bdaddr: &conn->init_addr,
5918 bdaddr_type: &conn->init_addr_type);
5919 }
5920 }
5921 } else {
5922 cancel_delayed_work(dwork: &conn->le_conn_timeout);
5923 }
5924
5925 /* The HCI_LE_Connection_Complete event is only sent once per connection.
5926 * Processing it more than once per connection can corrupt kernel memory.
5927 *
5928 * As the connection handle is set here for the first time, it indicates
5929 * whether the connection is already set up.
5930 */
5931 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5932 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5933 goto unlock;
5934 }
5935
5936 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5937
5938 /* Lookup the identity address from the stored connection
5939 * address and address type.
5940 *
5941 * When establishing connections to an identity address, the
5942 * connection procedure will store the resolvable random
5943 * address first. Now if it can be converted back into the
5944 * identity address, start using the identity address from
5945 * now on.
5946 */
5947 irk = hci_get_irk(hdev, bdaddr: &conn->dst, addr_type: conn->dst_type);
5948 if (irk) {
5949 bacpy(dst: &conn->dst, src: &irk->bdaddr);
5950 conn->dst_type = irk->addr_type;
5951 }
5952
5953 conn->dst_type = ev_bdaddr_type(hdev, type: conn->dst_type, NULL);
5954
5955 /* All connection failure handling is taken care of by the
5956 * hci_conn_failed function which is triggered by the HCI
5957 * request completion callbacks used for connecting.
5958 */
5959 if (status || hci_conn_set_handle(conn, handle))
5960 goto unlock;
5961
5962 /* Drop the connection if it has been aborted */
5963 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5964 hci_conn_drop(conn);
5965 goto unlock;
5966 }
5967
5968 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5969 addr_type = BDADDR_LE_PUBLIC;
5970 else
5971 addr_type = BDADDR_LE_RANDOM;
5972
5973 /* Drop the connection if the device is blocked */
5974 if (hci_bdaddr_list_lookup(list: &hdev->reject_list, bdaddr: &conn->dst, type: addr_type)) {
5975 hci_conn_drop(conn);
5976 goto unlock;
5977 }
5978
5979 if (!test_and_set_bit(nr: HCI_CONN_MGMT_CONNECTED, addr: &conn->flags))
5980 mgmt_device_connected(hdev, conn, NULL, name_len: 0);
5981
5982 conn->sec_level = BT_SECURITY_LOW;
5983 conn->state = BT_CONFIG;
5984
5985 /* Store current advertising instance as connection advertising instance
5986 * when sotfware rotation is in use so it can be re-enabled when
5987 * disconnected.
5988 */
5989 if (!ext_adv_capable(hdev))
5990 conn->adv_instance = hdev->cur_adv_instance;
5991
5992 conn->le_conn_interval = interval;
5993 conn->le_conn_latency = latency;
5994 conn->le_supv_timeout = supervision_timeout;
5995
5996 hci_debugfs_create_conn(conn);
5997 hci_conn_add_sysfs(conn);
5998
5999 /* The remote features procedure is defined for central
6000 * role only. So only in case of an initiated connection
6001 * request the remote features.
6002 *
6003 * If the local controller supports peripheral-initiated features
6004 * exchange, then requesting the remote features in peripheral
6005 * role is possible. Otherwise just transition into the
6006 * connected state without requesting the remote features.
6007 */
6008 if (conn->out ||
6009 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6010 struct hci_cp_le_read_remote_features cp;
6011
6012 cp.handle = __cpu_to_le16(conn->handle);
6013
6014 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6015 plen: sizeof(cp), param: &cp);
6016
6017 hci_conn_hold(conn);
6018 } else {
6019 conn->state = BT_CONNECTED;
6020 hci_connect_cfm(conn, status);
6021 }
6022
6023 params = hci_pend_le_action_lookup(list: &hdev->pend_le_conns, addr: &conn->dst,
6024 addr_type: conn->dst_type);
6025 if (params) {
6026 hci_pend_le_list_del_init(param: params);
6027 if (params->conn) {
6028 hci_conn_drop(conn: params->conn);
6029 hci_conn_put(conn: params->conn);
6030 params->conn = NULL;
6031 }
6032 }
6033
6034unlock:
6035 hci_update_passive_scan(hdev);
6036 hci_dev_unlock(hdev);
6037}
6038
6039static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6040 struct sk_buff *skb)
6041{
6042 struct hci_ev_le_conn_complete *ev = data;
6043
6044 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6045
6046 le_conn_complete_evt(hdev, status: ev->status, bdaddr: &ev->bdaddr, bdaddr_type: ev->bdaddr_type,
6047 NULL, role: ev->role, le16_to_cpu(ev->handle),
6048 le16_to_cpu(ev->interval),
6049 le16_to_cpu(ev->latency),
6050 le16_to_cpu(ev->supervision_timeout));
6051}
6052
6053static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6054 struct sk_buff *skb)
6055{
6056 struct hci_ev_le_enh_conn_complete *ev = data;
6057
6058 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6059
6060 le_conn_complete_evt(hdev, status: ev->status, bdaddr: &ev->bdaddr, bdaddr_type: ev->bdaddr_type,
6061 local_rpa: &ev->local_rpa, role: ev->role, le16_to_cpu(ev->handle),
6062 le16_to_cpu(ev->interval),
6063 le16_to_cpu(ev->latency),
6064 le16_to_cpu(ev->supervision_timeout));
6065}
6066
6067static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6068 struct sk_buff *skb)
6069{
6070 struct hci_evt_le_ext_adv_set_term *ev = data;
6071 struct hci_conn *conn;
6072 struct adv_info *adv, *n;
6073
6074 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6075
6076 /* The Bluetooth Core 5.3 specification clearly states that this event
6077 * shall not be sent when the Host disables the advertising set. So in
6078 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6079 *
6080 * When the Host disables an advertising set, all cleanup is done via
6081 * its command callback and not needed to be duplicated here.
6082 */
6083 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6084 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6085 return;
6086 }
6087
6088 hci_dev_lock(hdev);
6089
6090 adv = hci_find_adv_instance(hdev, instance: ev->handle);
6091
6092 if (ev->status) {
6093 if (!adv)
6094 goto unlock;
6095
6096 /* Remove advertising as it has been terminated */
6097 hci_remove_adv_instance(hdev, instance: ev->handle);
6098 mgmt_advertising_removed(NULL, hdev, instance: ev->handle);
6099
6100 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6101 if (adv->enabled)
6102 goto unlock;
6103 }
6104
6105 /* We are no longer advertising, clear HCI_LE_ADV */
6106 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6107 goto unlock;
6108 }
6109
6110 if (adv)
6111 adv->enabled = false;
6112
6113 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6114 if (conn) {
6115 /* Store handle in the connection so the correct advertising
6116 * instance can be re-enabled when disconnected.
6117 */
6118 conn->adv_instance = ev->handle;
6119
6120 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6121 bacmp(ba1: &conn->resp_addr, BDADDR_ANY))
6122 goto unlock;
6123
6124 if (!ev->handle) {
6125 bacpy(dst: &conn->resp_addr, src: &hdev->random_addr);
6126 goto unlock;
6127 }
6128
6129 if (adv)
6130 bacpy(dst: &conn->resp_addr, src: &adv->random_addr);
6131 }
6132
6133unlock:
6134 hci_dev_unlock(hdev);
6135}
6136
6137static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6138 struct sk_buff *skb)
6139{
6140 struct hci_ev_le_conn_update_complete *ev = data;
6141 struct hci_conn *conn;
6142
6143 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6144
6145 if (ev->status)
6146 return;
6147
6148 hci_dev_lock(hdev);
6149
6150 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6151 if (conn) {
6152 conn->le_conn_interval = le16_to_cpu(ev->interval);
6153 conn->le_conn_latency = le16_to_cpu(ev->latency);
6154 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6155 }
6156
6157 hci_dev_unlock(hdev);
6158}
6159
6160/* This function requires the caller holds hdev->lock */
6161static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6162 bdaddr_t *addr,
6163 u8 addr_type, bool addr_resolved,
6164 u8 adv_type)
6165{
6166 struct hci_conn *conn;
6167 struct hci_conn_params *params;
6168
6169 /* If the event is not connectable don't proceed further */
6170 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6171 return NULL;
6172
6173 /* Ignore if the device is blocked or hdev is suspended */
6174 if (hci_bdaddr_list_lookup(list: &hdev->reject_list, bdaddr: addr, type: addr_type) ||
6175 hdev->suspended)
6176 return NULL;
6177
6178 /* Most controller will fail if we try to create new connections
6179 * while we have an existing one in peripheral role.
6180 */
6181 if (hdev->conn_hash.le_num_peripheral > 0 &&
6182 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6183 !(hdev->le_states[3] & 0x10)))
6184 return NULL;
6185
6186 /* If we're not connectable only connect devices that we have in
6187 * our pend_le_conns list.
6188 */
6189 params = hci_pend_le_action_lookup(list: &hdev->pend_le_conns, addr,
6190 addr_type);
6191 if (!params)
6192 return NULL;
6193
6194 if (!params->explicit_connect) {
6195 switch (params->auto_connect) {
6196 case HCI_AUTO_CONN_DIRECT:
6197 /* Only devices advertising with ADV_DIRECT_IND are
6198 * triggering a connection attempt. This is allowing
6199 * incoming connections from peripheral devices.
6200 */
6201 if (adv_type != LE_ADV_DIRECT_IND)
6202 return NULL;
6203 break;
6204 case HCI_AUTO_CONN_ALWAYS:
6205 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6206 * are triggering a connection attempt. This means
6207 * that incoming connections from peripheral device are
6208 * accepted and also outgoing connections to peripheral
6209 * devices are established when found.
6210 */
6211 break;
6212 default:
6213 return NULL;
6214 }
6215 }
6216
6217 conn = hci_connect_le(hdev, dst: addr, dst_type: addr_type, dst_resolved: addr_resolved,
6218 BT_SECURITY_LOW, conn_timeout: hdev->def_le_autoconnect_timeout,
6219 HCI_ROLE_MASTER);
6220 if (!IS_ERR(ptr: conn)) {
6221 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6222 * by higher layer that tried to connect, if no then
6223 * store the pointer since we don't really have any
6224 * other owner of the object besides the params that
6225 * triggered it. This way we can abort the connection if
6226 * the parameters get removed and keep the reference
6227 * count consistent once the connection is established.
6228 */
6229
6230 if (!params->explicit_connect)
6231 params->conn = hci_conn_get(conn);
6232
6233 return conn;
6234 }
6235
6236 switch (PTR_ERR(ptr: conn)) {
6237 case -EBUSY:
6238 /* If hci_connect() returns -EBUSY it means there is already
6239 * an LE connection attempt going on. Since controllers don't
6240 * support more than one connection attempt at the time, we
6241 * don't consider this an error case.
6242 */
6243 break;
6244 default:
6245 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6246 return NULL;
6247 }
6248
6249 return NULL;
6250}
6251
6252static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6253 u8 bdaddr_type, bdaddr_t *direct_addr,
6254 u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6255 bool ext_adv, bool ctl_time, u64 instant)
6256{
6257 struct discovery_state *d = &hdev->discovery;
6258 struct smp_irk *irk;
6259 struct hci_conn *conn;
6260 bool match, bdaddr_resolved;
6261 u32 flags;
6262 u8 *ptr;
6263
6264 switch (type) {
6265 case LE_ADV_IND:
6266 case LE_ADV_DIRECT_IND:
6267 case LE_ADV_SCAN_IND:
6268 case LE_ADV_NONCONN_IND:
6269 case LE_ADV_SCAN_RSP:
6270 break;
6271 default:
6272 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6273 "type: 0x%02x", type);
6274 return;
6275 }
6276
6277 if (len > max_adv_len(hdev)) {
6278 bt_dev_err_ratelimited(hdev,
6279 "adv larger than maximum supported");
6280 return;
6281 }
6282
6283 /* Find the end of the data in case the report contains padded zero
6284 * bytes at the end causing an invalid length value.
6285 *
6286 * When data is NULL, len is 0 so there is no need for extra ptr
6287 * check as 'ptr < data + 0' is already false in such case.
6288 */
6289 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6290 if (ptr + 1 + *ptr > data + len)
6291 break;
6292 }
6293
6294 /* Adjust for actual length. This handles the case when remote
6295 * device is advertising with incorrect data length.
6296 */
6297 len = ptr - data;
6298
6299 /* If the direct address is present, then this report is from
6300 * a LE Direct Advertising Report event. In that case it is
6301 * important to see if the address is matching the local
6302 * controller address.
6303 */
6304 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6305 direct_addr_type = ev_bdaddr_type(hdev, type: direct_addr_type,
6306 resolved: &bdaddr_resolved);
6307
6308 /* Only resolvable random addresses are valid for these
6309 * kind of reports and others can be ignored.
6310 */
6311 if (!hci_bdaddr_is_rpa(bdaddr: direct_addr, addr_type: direct_addr_type))
6312 return;
6313
6314 /* If the controller is not using resolvable random
6315 * addresses, then this report can be ignored.
6316 */
6317 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6318 return;
6319
6320 /* If the local IRK of the controller does not match
6321 * with the resolvable random address provided, then
6322 * this report can be ignored.
6323 */
6324 if (!smp_irk_matches(hdev, irk: hdev->irk, bdaddr: direct_addr))
6325 return;
6326 }
6327
6328 /* Check if we need to convert to identity address */
6329 irk = hci_get_irk(hdev, bdaddr, addr_type: bdaddr_type);
6330 if (irk) {
6331 bdaddr = &irk->bdaddr;
6332 bdaddr_type = irk->addr_type;
6333 }
6334
6335 bdaddr_type = ev_bdaddr_type(hdev, type: bdaddr_type, resolved: &bdaddr_resolved);
6336
6337 /* Check if we have been requested to connect to this device.
6338 *
6339 * direct_addr is set only for directed advertising reports (it is NULL
6340 * for advertising reports) and is already verified to be RPA above.
6341 */
6342 conn = check_pending_le_conn(hdev, addr: bdaddr, addr_type: bdaddr_type, addr_resolved: bdaddr_resolved,
6343 adv_type: type);
6344 if (!ext_adv && conn && type == LE_ADV_IND &&
6345 len <= max_adv_len(hdev)) {
6346 /* Store report for later inclusion by
6347 * mgmt_device_connected
6348 */
6349 memcpy(conn->le_adv_data, data, len);
6350 conn->le_adv_data_len = len;
6351 }
6352
6353 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6354 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6355 else
6356 flags = 0;
6357
6358 /* All scan results should be sent up for Mesh systems */
6359 if (hci_dev_test_flag(hdev, HCI_MESH)) {
6360 mgmt_device_found(hdev, bdaddr, LE_LINK, addr_type: bdaddr_type, NULL,
6361 rssi, flags, eir: data, eir_len: len, NULL, scan_rsp_len: 0, instant);
6362 return;
6363 }
6364
6365 /* Passive scanning shouldn't trigger any device found events,
6366 * except for devices marked as CONN_REPORT for which we do send
6367 * device found events, or advertisement monitoring requested.
6368 */
6369 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6370 if (type == LE_ADV_DIRECT_IND)
6371 return;
6372
6373 if (!hci_pend_le_action_lookup(list: &hdev->pend_le_reports,
6374 addr: bdaddr, addr_type: bdaddr_type) &&
6375 idr_is_empty(idr: &hdev->adv_monitors_idr))
6376 return;
6377
6378 mgmt_device_found(hdev, bdaddr, LE_LINK, addr_type: bdaddr_type, NULL,
6379 rssi, flags, eir: data, eir_len: len, NULL, scan_rsp_len: 0, instant: 0);
6380 return;
6381 }
6382
6383 /* When receiving a scan response, then there is no way to
6384 * know if the remote device is connectable or not. However
6385 * since scan responses are merged with a previously seen
6386 * advertising report, the flags field from that report
6387 * will be used.
6388 *
6389 * In the unlikely case that a controller just sends a scan
6390 * response event that doesn't match the pending report, then
6391 * it is marked as a standalone SCAN_RSP.
6392 */
6393 if (type == LE_ADV_SCAN_RSP)
6394 flags = MGMT_DEV_FOUND_SCAN_RSP;
6395
6396 /* If there's nothing pending either store the data from this
6397 * event or send an immediate device found event if the data
6398 * should not be stored for later.
6399 */
6400 if (!ext_adv && !has_pending_adv_report(hdev)) {
6401 /* If the report will trigger a SCAN_REQ store it for
6402 * later merging.
6403 */
6404 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6405 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6406 rssi, flags, data, len);
6407 return;
6408 }
6409
6410 mgmt_device_found(hdev, bdaddr, LE_LINK, addr_type: bdaddr_type, NULL,
6411 rssi, flags, eir: data, eir_len: len, NULL, scan_rsp_len: 0, instant: 0);
6412 return;
6413 }
6414
6415 /* Check if the pending report is for the same device as the new one */
6416 match = (!bacmp(ba1: bdaddr, ba2: &d->last_adv_addr) &&
6417 bdaddr_type == d->last_adv_addr_type);
6418
6419 /* If the pending data doesn't match this report or this isn't a
6420 * scan response (e.g. we got a duplicate ADV_IND) then force
6421 * sending of the pending data.
6422 */
6423 if (type != LE_ADV_SCAN_RSP || !match) {
6424 /* Send out whatever is in the cache, but skip duplicates */
6425 if (!match)
6426 mgmt_device_found(hdev, bdaddr: &d->last_adv_addr, LE_LINK,
6427 addr_type: d->last_adv_addr_type, NULL,
6428 rssi: d->last_adv_rssi, flags: d->last_adv_flags,
6429 eir: d->last_adv_data,
6430 eir_len: d->last_adv_data_len, NULL, scan_rsp_len: 0, instant: 0);
6431
6432 /* If the new report will trigger a SCAN_REQ store it for
6433 * later merging.
6434 */
6435 if (!ext_adv && (type == LE_ADV_IND ||
6436 type == LE_ADV_SCAN_IND)) {
6437 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6438 rssi, flags, data, len);
6439 return;
6440 }
6441
6442 /* The advertising reports cannot be merged, so clear
6443 * the pending report and send out a device found event.
6444 */
6445 clear_pending_adv_report(hdev);
6446 mgmt_device_found(hdev, bdaddr, LE_LINK, addr_type: bdaddr_type, NULL,
6447 rssi, flags, eir: data, eir_len: len, NULL, scan_rsp_len: 0, instant: 0);
6448 return;
6449 }
6450
6451 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6452 * the new event is a SCAN_RSP. We can therefore proceed with
6453 * sending a merged device found event.
6454 */
6455 mgmt_device_found(hdev, bdaddr: &d->last_adv_addr, LE_LINK,
6456 addr_type: d->last_adv_addr_type, NULL, rssi, flags: d->last_adv_flags,
6457 eir: d->last_adv_data, eir_len: d->last_adv_data_len, scan_rsp: data, scan_rsp_len: len, instant: 0);
6458 clear_pending_adv_report(hdev);
6459}
6460
6461static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6462 struct sk_buff *skb)
6463{
6464 struct hci_ev_le_advertising_report *ev = data;
6465 u64 instant = jiffies;
6466
6467 if (!ev->num)
6468 return;
6469
6470 hci_dev_lock(hdev);
6471
6472 while (ev->num--) {
6473 struct hci_ev_le_advertising_info *info;
6474 s8 rssi;
6475
6476 info = hci_le_ev_skb_pull(hdev, skb,
6477 HCI_EV_LE_ADVERTISING_REPORT,
6478 len: sizeof(*info));
6479 if (!info)
6480 break;
6481
6482 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6483 len: info->length + 1))
6484 break;
6485
6486 if (info->length <= max_adv_len(hdev)) {
6487 rssi = info->data[info->length];
6488 process_adv_report(hdev, type: info->type, bdaddr: &info->bdaddr,
6489 bdaddr_type: info->bdaddr_type, NULL, direct_addr_type: 0, rssi,
6490 data: info->data, len: info->length, ext_adv: false,
6491 ctl_time: false, instant);
6492 } else {
6493 bt_dev_err(hdev, "Dropping invalid advertising data");
6494 }
6495 }
6496
6497 hci_dev_unlock(hdev);
6498}
6499
6500static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6501{
6502 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6503 switch (evt_type) {
6504 case LE_LEGACY_ADV_IND:
6505 return LE_ADV_IND;
6506 case LE_LEGACY_ADV_DIRECT_IND:
6507 return LE_ADV_DIRECT_IND;
6508 case LE_LEGACY_ADV_SCAN_IND:
6509 return LE_ADV_SCAN_IND;
6510 case LE_LEGACY_NONCONN_IND:
6511 return LE_ADV_NONCONN_IND;
6512 case LE_LEGACY_SCAN_RSP_ADV:
6513 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6514 return LE_ADV_SCAN_RSP;
6515 }
6516
6517 goto invalid;
6518 }
6519
6520 if (evt_type & LE_EXT_ADV_CONN_IND) {
6521 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6522 return LE_ADV_DIRECT_IND;
6523
6524 return LE_ADV_IND;
6525 }
6526
6527 if (evt_type & LE_EXT_ADV_SCAN_RSP)
6528 return LE_ADV_SCAN_RSP;
6529
6530 if (evt_type & LE_EXT_ADV_SCAN_IND)
6531 return LE_ADV_SCAN_IND;
6532
6533 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6534 evt_type & LE_EXT_ADV_DIRECT_IND)
6535 return LE_ADV_NONCONN_IND;
6536
6537invalid:
6538 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6539 evt_type);
6540
6541 return LE_ADV_INVALID;
6542}
6543
6544static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6545 struct sk_buff *skb)
6546{
6547 struct hci_ev_le_ext_adv_report *ev = data;
6548 u64 instant = jiffies;
6549
6550 if (!ev->num)
6551 return;
6552
6553 hci_dev_lock(hdev);
6554
6555 while (ev->num--) {
6556 struct hci_ev_le_ext_adv_info *info;
6557 u8 legacy_evt_type;
6558 u16 evt_type;
6559
6560 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6561 len: sizeof(*info));
6562 if (!info)
6563 break;
6564
6565 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6566 len: info->length))
6567 break;
6568
6569 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6570 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6571 if (legacy_evt_type != LE_ADV_INVALID) {
6572 process_adv_report(hdev, type: legacy_evt_type, bdaddr: &info->bdaddr,
6573 bdaddr_type: info->bdaddr_type, NULL, direct_addr_type: 0,
6574 rssi: info->rssi, data: info->data, len: info->length,
6575 ext_adv: !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6576 ctl_time: false, instant);
6577 }
6578 }
6579
6580 hci_dev_unlock(hdev);
6581}
6582
6583static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6584{
6585 struct hci_cp_le_pa_term_sync cp;
6586
6587 memset(&cp, 0, sizeof(cp));
6588 cp.handle = handle;
6589
6590 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, plen: sizeof(cp), param: &cp);
6591}
6592
6593static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6594 struct sk_buff *skb)
6595{
6596 struct hci_ev_le_pa_sync_established *ev = data;
6597 int mask = hdev->link_mode;
6598 __u8 flags = 0;
6599 struct hci_conn *pa_sync;
6600
6601 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6602
6603 hci_dev_lock(hdev);
6604
6605 hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6606
6607 mask |= hci_proto_connect_ind(hdev, bdaddr: &ev->bdaddr, ISO_LINK, flags: &flags);
6608 if (!(mask & HCI_LM_ACCEPT)) {
6609 hci_le_pa_term_sync(hdev, handle: ev->handle);
6610 goto unlock;
6611 }
6612
6613 if (!(flags & HCI_PROTO_DEFER))
6614 goto unlock;
6615
6616 if (ev->status) {
6617 /* Add connection to indicate the failed PA sync event */
6618 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6619 HCI_ROLE_SLAVE);
6620
6621 if (!pa_sync)
6622 goto unlock;
6623
6624 set_bit(nr: HCI_CONN_PA_SYNC_FAILED, addr: &pa_sync->flags);
6625
6626 /* Notify iso layer */
6627 hci_connect_cfm(conn: pa_sync, status: ev->status);
6628 }
6629
6630unlock:
6631 hci_dev_unlock(hdev);
6632}
6633
6634static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6635 struct sk_buff *skb)
6636{
6637 struct hci_ev_le_per_adv_report *ev = data;
6638 int mask = hdev->link_mode;
6639 __u8 flags = 0;
6640
6641 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6642
6643 hci_dev_lock(hdev);
6644
6645 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, flags: &flags);
6646 if (!(mask & HCI_LM_ACCEPT))
6647 hci_le_pa_term_sync(hdev, handle: ev->sync_handle);
6648
6649 hci_dev_unlock(hdev);
6650}
6651
6652static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6653 struct sk_buff *skb)
6654{
6655 struct hci_ev_le_remote_feat_complete *ev = data;
6656 struct hci_conn *conn;
6657
6658 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6659
6660 hci_dev_lock(hdev);
6661
6662 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6663 if (conn) {
6664 if (!ev->status)
6665 memcpy(conn->features[0], ev->features, 8);
6666
6667 if (conn->state == BT_CONFIG) {
6668 __u8 status;
6669
6670 /* If the local controller supports peripheral-initiated
6671 * features exchange, but the remote controller does
6672 * not, then it is possible that the error code 0x1a
6673 * for unsupported remote feature gets returned.
6674 *
6675 * In this specific case, allow the connection to
6676 * transition into connected state and mark it as
6677 * successful.
6678 */
6679 if (!conn->out && ev->status == 0x1a &&
6680 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6681 status = 0x00;
6682 else
6683 status = ev->status;
6684
6685 conn->state = BT_CONNECTED;
6686 hci_connect_cfm(conn, status);
6687 hci_conn_drop(conn);
6688 }
6689 }
6690
6691 hci_dev_unlock(hdev);
6692}
6693
6694static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6695 struct sk_buff *skb)
6696{
6697 struct hci_ev_le_ltk_req *ev = data;
6698 struct hci_cp_le_ltk_reply cp;
6699 struct hci_cp_le_ltk_neg_reply neg;
6700 struct hci_conn *conn;
6701 struct smp_ltk *ltk;
6702
6703 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6704
6705 hci_dev_lock(hdev);
6706
6707 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6708 if (conn == NULL)
6709 goto not_found;
6710
6711 ltk = hci_find_ltk(hdev, bdaddr: &conn->dst, addr_type: conn->dst_type, role: conn->role);
6712 if (!ltk)
6713 goto not_found;
6714
6715 if (smp_ltk_is_sc(key: ltk)) {
6716 /* With SC both EDiv and Rand are set to zero */
6717 if (ev->ediv || ev->rand)
6718 goto not_found;
6719 } else {
6720 /* For non-SC keys check that EDiv and Rand match */
6721 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6722 goto not_found;
6723 }
6724
6725 memcpy(cp.ltk, ltk->val, ltk->enc_size);
6726 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6727 cp.handle = cpu_to_le16(conn->handle);
6728
6729 conn->pending_sec_level = smp_ltk_sec_level(key: ltk);
6730
6731 conn->enc_key_size = ltk->enc_size;
6732
6733 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, plen: sizeof(cp), param: &cp);
6734
6735 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6736 * temporary key used to encrypt a connection following
6737 * pairing. It is used during the Encrypted Session Setup to
6738 * distribute the keys. Later, security can be re-established
6739 * using a distributed LTK.
6740 */
6741 if (ltk->type == SMP_STK) {
6742 set_bit(nr: HCI_CONN_STK_ENCRYPT, addr: &conn->flags);
6743 list_del_rcu(entry: &ltk->list);
6744 kfree_rcu(ltk, rcu);
6745 } else {
6746 clear_bit(nr: HCI_CONN_STK_ENCRYPT, addr: &conn->flags);
6747 }
6748
6749 hci_dev_unlock(hdev);
6750
6751 return;
6752
6753not_found:
6754 neg.handle = ev->handle;
6755 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, plen: sizeof(neg), param: &neg);
6756 hci_dev_unlock(hdev);
6757}
6758
6759static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6760 u8 reason)
6761{
6762 struct hci_cp_le_conn_param_req_neg_reply cp;
6763
6764 cp.handle = cpu_to_le16(handle);
6765 cp.reason = reason;
6766
6767 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, plen: sizeof(cp),
6768 param: &cp);
6769}
6770
6771static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6772 struct sk_buff *skb)
6773{
6774 struct hci_ev_le_remote_conn_param_req *ev = data;
6775 struct hci_cp_le_conn_param_req_reply cp;
6776 struct hci_conn *hcon;
6777 u16 handle, min, max, latency, timeout;
6778
6779 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6780
6781 handle = le16_to_cpu(ev->handle);
6782 min = le16_to_cpu(ev->interval_min);
6783 max = le16_to_cpu(ev->interval_max);
6784 latency = le16_to_cpu(ev->latency);
6785 timeout = le16_to_cpu(ev->timeout);
6786
6787 hcon = hci_conn_hash_lookup_handle(hdev, handle);
6788 if (!hcon || hcon->state != BT_CONNECTED)
6789 return send_conn_param_neg_reply(hdev, handle,
6790 HCI_ERROR_UNKNOWN_CONN_ID);
6791
6792 if (hci_check_conn_params(min, max, latency, to_multiplier: timeout))
6793 return send_conn_param_neg_reply(hdev, handle,
6794 HCI_ERROR_INVALID_LL_PARAMS);
6795
6796 if (hcon->role == HCI_ROLE_MASTER) {
6797 struct hci_conn_params *params;
6798 u8 store_hint;
6799
6800 hci_dev_lock(hdev);
6801
6802 params = hci_conn_params_lookup(hdev, addr: &hcon->dst,
6803 addr_type: hcon->dst_type);
6804 if (params) {
6805 params->conn_min_interval = min;
6806 params->conn_max_interval = max;
6807 params->conn_latency = latency;
6808 params->supervision_timeout = timeout;
6809 store_hint = 0x01;
6810 } else {
6811 store_hint = 0x00;
6812 }
6813
6814 hci_dev_unlock(hdev);
6815
6816 mgmt_new_conn_param(hdev, bdaddr: &hcon->dst, bdaddr_type: hcon->dst_type,
6817 store_hint, min_interval: min, max_interval: max, latency, timeout);
6818 }
6819
6820 cp.handle = ev->handle;
6821 cp.interval_min = ev->interval_min;
6822 cp.interval_max = ev->interval_max;
6823 cp.latency = ev->latency;
6824 cp.timeout = ev->timeout;
6825 cp.min_ce_len = 0;
6826 cp.max_ce_len = 0;
6827
6828 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, plen: sizeof(cp), param: &cp);
6829}
6830
6831static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6832 struct sk_buff *skb)
6833{
6834 struct hci_ev_le_direct_adv_report *ev = data;
6835 u64 instant = jiffies;
6836 int i;
6837
6838 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6839 flex_array_size(ev, info, ev->num)))
6840 return;
6841
6842 if (!ev->num)
6843 return;
6844
6845 hci_dev_lock(hdev);
6846
6847 for (i = 0; i < ev->num; i++) {
6848 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6849
6850 process_adv_report(hdev, type: info->type, bdaddr: &info->bdaddr,
6851 bdaddr_type: info->bdaddr_type, direct_addr: &info->direct_addr,
6852 direct_addr_type: info->direct_addr_type, rssi: info->rssi, NULL, len: 0,
6853 ext_adv: false, ctl_time: false, instant);
6854 }
6855
6856 hci_dev_unlock(hdev);
6857}
6858
6859static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6860 struct sk_buff *skb)
6861{
6862 struct hci_ev_le_phy_update_complete *ev = data;
6863 struct hci_conn *conn;
6864
6865 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6866
6867 if (ev->status)
6868 return;
6869
6870 hci_dev_lock(hdev);
6871
6872 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6873 if (!conn)
6874 goto unlock;
6875
6876 conn->le_tx_phy = ev->tx_phy;
6877 conn->le_rx_phy = ev->rx_phy;
6878
6879unlock:
6880 hci_dev_unlock(hdev);
6881}
6882
6883static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6884 struct sk_buff *skb)
6885{
6886 struct hci_evt_le_cis_established *ev = data;
6887 struct hci_conn *conn;
6888 struct bt_iso_qos *qos;
6889 bool pending = false;
6890 u16 handle = __le16_to_cpu(ev->handle);
6891
6892 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6893
6894 hci_dev_lock(hdev);
6895
6896 conn = hci_conn_hash_lookup_handle(hdev, handle);
6897 if (!conn) {
6898 bt_dev_err(hdev,
6899 "Unable to find connection with handle 0x%4.4x",
6900 handle);
6901 goto unlock;
6902 }
6903
6904 if (conn->type != ISO_LINK) {
6905 bt_dev_err(hdev,
6906 "Invalid connection link type handle 0x%4.4x",
6907 handle);
6908 goto unlock;
6909 }
6910
6911 qos = &conn->iso_qos;
6912
6913 pending = test_and_clear_bit(nr: HCI_CONN_CREATE_CIS, addr: &conn->flags);
6914
6915 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
6916 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
6917 qos->ucast.out.interval = qos->ucast.in.interval;
6918
6919 switch (conn->role) {
6920 case HCI_ROLE_SLAVE:
6921 /* Convert Transport Latency (us) to Latency (msec) */
6922 qos->ucast.in.latency =
6923 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6924 1000);
6925 qos->ucast.out.latency =
6926 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6927 1000);
6928 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6929 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6930 qos->ucast.in.phy = ev->c_phy;
6931 qos->ucast.out.phy = ev->p_phy;
6932 break;
6933 case HCI_ROLE_MASTER:
6934 /* Convert Transport Latency (us) to Latency (msec) */
6935 qos->ucast.out.latency =
6936 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6937 1000);
6938 qos->ucast.in.latency =
6939 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6940 1000);
6941 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6942 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6943 qos->ucast.out.phy = ev->c_phy;
6944 qos->ucast.in.phy = ev->p_phy;
6945 break;
6946 }
6947
6948 if (!ev->status) {
6949 conn->state = BT_CONNECTED;
6950 hci_debugfs_create_conn(conn);
6951 hci_conn_add_sysfs(conn);
6952 hci_iso_setup_path(conn);
6953 goto unlock;
6954 }
6955
6956 conn->state = BT_CLOSED;
6957 hci_connect_cfm(conn, status: ev->status);
6958 hci_conn_del(conn);
6959
6960unlock:
6961 if (pending)
6962 hci_le_create_cis_pending(hdev);
6963
6964 hci_dev_unlock(hdev);
6965}
6966
6967static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6968{
6969 struct hci_cp_le_reject_cis cp;
6970
6971 memset(&cp, 0, sizeof(cp));
6972 cp.handle = handle;
6973 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6974 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, plen: sizeof(cp), param: &cp);
6975}
6976
6977static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6978{
6979 struct hci_cp_le_accept_cis cp;
6980
6981 memset(&cp, 0, sizeof(cp));
6982 cp.handle = handle;
6983 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, plen: sizeof(cp), param: &cp);
6984}
6985
6986static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6987 struct sk_buff *skb)
6988{
6989 struct hci_evt_le_cis_req *ev = data;
6990 u16 acl_handle, cis_handle;
6991 struct hci_conn *acl, *cis;
6992 int mask;
6993 __u8 flags = 0;
6994
6995 acl_handle = __le16_to_cpu(ev->acl_handle);
6996 cis_handle = __le16_to_cpu(ev->cis_handle);
6997
6998 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6999 acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7000
7001 hci_dev_lock(hdev);
7002
7003 acl = hci_conn_hash_lookup_handle(hdev, handle: acl_handle);
7004 if (!acl)
7005 goto unlock;
7006
7007 mask = hci_proto_connect_ind(hdev, bdaddr: &acl->dst, ISO_LINK, flags: &flags);
7008 if (!(mask & HCI_LM_ACCEPT)) {
7009 hci_le_reject_cis(hdev, handle: ev->cis_handle);
7010 goto unlock;
7011 }
7012
7013 cis = hci_conn_hash_lookup_handle(hdev, handle: cis_handle);
7014 if (!cis) {
7015 cis = hci_conn_add(hdev, ISO_LINK, dst: &acl->dst, HCI_ROLE_SLAVE,
7016 handle: cis_handle);
7017 if (!cis) {
7018 hci_le_reject_cis(hdev, handle: ev->cis_handle);
7019 goto unlock;
7020 }
7021 }
7022
7023 cis->iso_qos.ucast.cig = ev->cig_id;
7024 cis->iso_qos.ucast.cis = ev->cis_id;
7025
7026 if (!(flags & HCI_PROTO_DEFER)) {
7027 hci_le_accept_cis(hdev, handle: ev->cis_handle);
7028 } else {
7029 cis->state = BT_CONNECT2;
7030 hci_connect_cfm(conn: cis, status: 0);
7031 }
7032
7033unlock:
7034 hci_dev_unlock(hdev);
7035}
7036
7037static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7038{
7039 u8 handle = PTR_UINT(data);
7040
7041 return hci_le_terminate_big_sync(hdev, handle,
7042 HCI_ERROR_LOCAL_HOST_TERM);
7043}
7044
7045static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7046 struct sk_buff *skb)
7047{
7048 struct hci_evt_le_create_big_complete *ev = data;
7049 struct hci_conn *conn;
7050 __u8 i = 0;
7051
7052 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7053
7054 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7055 flex_array_size(ev, bis_handle, ev->num_bis)))
7056 return;
7057
7058 hci_dev_lock(hdev);
7059 rcu_read_lock();
7060
7061 /* Connect all BISes that are bound to the BIG */
7062 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7063 if (bacmp(ba1: &conn->dst, BDADDR_ANY) ||
7064 conn->type != ISO_LINK ||
7065 conn->iso_qos.bcast.big != ev->handle)
7066 continue;
7067
7068 if (hci_conn_set_handle(conn,
7069 __le16_to_cpu(ev->bis_handle[i++])))
7070 continue;
7071
7072 if (!ev->status) {
7073 conn->state = BT_CONNECTED;
7074 set_bit(nr: HCI_CONN_BIG_CREATED, addr: &conn->flags);
7075 rcu_read_unlock();
7076 hci_debugfs_create_conn(conn);
7077 hci_conn_add_sysfs(conn);
7078 hci_iso_setup_path(conn);
7079 rcu_read_lock();
7080 continue;
7081 }
7082
7083 hci_connect_cfm(conn, status: ev->status);
7084 rcu_read_unlock();
7085 hci_conn_del(conn);
7086 rcu_read_lock();
7087 }
7088
7089 rcu_read_unlock();
7090
7091 if (!ev->status && !i)
7092 /* If no BISes have been connected for the BIG,
7093 * terminate. This is in case all bound connections
7094 * have been closed before the BIG creation
7095 * has completed.
7096 */
7097 hci_cmd_sync_queue(hdev, func: hci_iso_term_big_sync,
7098 UINT_PTR(ev->handle), NULL);
7099
7100 hci_dev_unlock(hdev);
7101}
7102
7103static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7104 struct sk_buff *skb)
7105{
7106 struct hci_evt_le_big_sync_estabilished *ev = data;
7107 struct hci_conn *bis;
7108 int i;
7109
7110 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7111
7112 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7113 flex_array_size(ev, bis, ev->num_bis)))
7114 return;
7115
7116 hci_dev_lock(hdev);
7117
7118 for (i = 0; i < ev->num_bis; i++) {
7119 u16 handle = le16_to_cpu(ev->bis[i]);
7120 __le32 interval;
7121
7122 bis = hci_conn_hash_lookup_handle(hdev, handle);
7123 if (!bis) {
7124 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7125 HCI_ROLE_SLAVE, handle);
7126 if (!bis)
7127 continue;
7128 }
7129
7130 if (ev->status != 0x42)
7131 /* Mark PA sync as established */
7132 set_bit(nr: HCI_CONN_PA_SYNC, addr: &bis->flags);
7133
7134 bis->iso_qos.bcast.big = ev->handle;
7135 memset(&interval, 0, sizeof(interval));
7136 memcpy(&interval, ev->latency, sizeof(ev->latency));
7137 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7138 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7139 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7140 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7141
7142 if (!ev->status) {
7143 set_bit(nr: HCI_CONN_BIG_SYNC, addr: &bis->flags);
7144 hci_iso_setup_path(conn: bis);
7145 }
7146 }
7147
7148 /* In case BIG sync failed, notify each failed connection to
7149 * the user after all hci connections have been added
7150 */
7151 if (ev->status)
7152 for (i = 0; i < ev->num_bis; i++) {
7153 u16 handle = le16_to_cpu(ev->bis[i]);
7154
7155 bis = hci_conn_hash_lookup_handle(hdev, handle);
7156
7157 set_bit(nr: HCI_CONN_BIG_SYNC_FAILED, addr: &bis->flags);
7158 hci_connect_cfm(conn: bis, status: ev->status);
7159 }
7160
7161 hci_dev_unlock(hdev);
7162}
7163
7164static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7165 struct sk_buff *skb)
7166{
7167 struct hci_evt_le_big_info_adv_report *ev = data;
7168 int mask = hdev->link_mode;
7169 __u8 flags = 0;
7170 struct hci_conn *pa_sync;
7171
7172 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7173
7174 hci_dev_lock(hdev);
7175
7176 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, flags: &flags);
7177 if (!(mask & HCI_LM_ACCEPT)) {
7178 hci_le_pa_term_sync(hdev, handle: ev->sync_handle);
7179 goto unlock;
7180 }
7181
7182 if (!(flags & HCI_PROTO_DEFER))
7183 goto unlock;
7184
7185 pa_sync = hci_conn_hash_lookup_pa_sync_handle
7186 (hdev,
7187 le16_to_cpu(ev->sync_handle));
7188
7189 if (pa_sync)
7190 goto unlock;
7191
7192 /* Add connection to indicate the PA sync event */
7193 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7194 HCI_ROLE_SLAVE);
7195
7196 if (!pa_sync)
7197 goto unlock;
7198
7199 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7200 set_bit(nr: HCI_CONN_PA_SYNC, addr: &pa_sync->flags);
7201
7202 /* Notify iso layer */
7203 hci_connect_cfm(conn: pa_sync, status: 0x00);
7204
7205unlock:
7206 hci_dev_unlock(hdev);
7207}
7208
7209#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7210[_op] = { \
7211 .func = _func, \
7212 .min_len = _min_len, \
7213 .max_len = _max_len, \
7214}
7215
7216#define HCI_LE_EV(_op, _func, _len) \
7217 HCI_LE_EV_VL(_op, _func, _len, _len)
7218
7219#define HCI_LE_EV_STATUS(_op, _func) \
7220 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7221
7222/* Entries in this table shall have their position according to the subevent
7223 * opcode they handle so the use of the macros above is recommend since it does
7224 * attempt to initialize at its proper index using Designated Initializers that
7225 * way events without a callback function can be ommited.
7226 */
7227static const struct hci_le_ev {
7228 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7229 u16 min_len;
7230 u16 max_len;
7231} hci_le_ev_table[U8_MAX + 1] = {
7232 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7233 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7234 sizeof(struct hci_ev_le_conn_complete)),
7235 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7236 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7237 sizeof(struct hci_ev_le_advertising_report),
7238 HCI_MAX_EVENT_SIZE),
7239 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7240 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7241 hci_le_conn_update_complete_evt,
7242 sizeof(struct hci_ev_le_conn_update_complete)),
7243 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7244 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7245 hci_le_remote_feat_complete_evt,
7246 sizeof(struct hci_ev_le_remote_feat_complete)),
7247 /* [0x05 = HCI_EV_LE_LTK_REQ] */
7248 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7249 sizeof(struct hci_ev_le_ltk_req)),
7250 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7251 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7252 hci_le_remote_conn_param_req_evt,
7253 sizeof(struct hci_ev_le_remote_conn_param_req)),
7254 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7255 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7256 hci_le_enh_conn_complete_evt,
7257 sizeof(struct hci_ev_le_enh_conn_complete)),
7258 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7259 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7260 sizeof(struct hci_ev_le_direct_adv_report),
7261 HCI_MAX_EVENT_SIZE),
7262 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7263 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7264 sizeof(struct hci_ev_le_phy_update_complete)),
7265 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7266 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7267 sizeof(struct hci_ev_le_ext_adv_report),
7268 HCI_MAX_EVENT_SIZE),
7269 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7270 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7271 hci_le_pa_sync_estabilished_evt,
7272 sizeof(struct hci_ev_le_pa_sync_established)),
7273 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7274 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7275 hci_le_per_adv_report_evt,
7276 sizeof(struct hci_ev_le_per_adv_report),
7277 HCI_MAX_EVENT_SIZE),
7278 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7279 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7280 sizeof(struct hci_evt_le_ext_adv_set_term)),
7281 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7282 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7283 sizeof(struct hci_evt_le_cis_established)),
7284 /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7285 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7286 sizeof(struct hci_evt_le_cis_req)),
7287 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7288 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7289 hci_le_create_big_complete_evt,
7290 sizeof(struct hci_evt_le_create_big_complete),
7291 HCI_MAX_EVENT_SIZE),
7292 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7293 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7294 hci_le_big_sync_established_evt,
7295 sizeof(struct hci_evt_le_big_sync_estabilished),
7296 HCI_MAX_EVENT_SIZE),
7297 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7298 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7299 hci_le_big_info_adv_report_evt,
7300 sizeof(struct hci_evt_le_big_info_adv_report),
7301 HCI_MAX_EVENT_SIZE),
7302};
7303
7304static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7305 struct sk_buff *skb, u16 *opcode, u8 *status,
7306 hci_req_complete_t *req_complete,
7307 hci_req_complete_skb_t *req_complete_skb)
7308{
7309 struct hci_ev_le_meta *ev = data;
7310 const struct hci_le_ev *subev;
7311
7312 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7313
7314 /* Only match event if command OGF is for LE */
7315 if (hdev->sent_cmd &&
7316 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7317 hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7318 *opcode = hci_skb_opcode(hdev->sent_cmd);
7319 hci_req_cmd_complete(hdev, opcode: *opcode, status: 0x00, req_complete,
7320 req_complete_skb);
7321 }
7322
7323 subev = &hci_le_ev_table[ev->subevent];
7324 if (!subev->func)
7325 return;
7326
7327 if (skb->len < subev->min_len) {
7328 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7329 ev->subevent, skb->len, subev->min_len);
7330 return;
7331 }
7332
7333 /* Just warn if the length is over max_len size it still be
7334 * possible to partially parse the event so leave to callback to
7335 * decide if that is acceptable.
7336 */
7337 if (skb->len > subev->max_len)
7338 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7339 ev->subevent, skb->len, subev->max_len);
7340 data = hci_le_ev_skb_pull(hdev, skb, ev: ev->subevent, len: subev->min_len);
7341 if (!data)
7342 return;
7343
7344 subev->func(hdev, data, skb);
7345}
7346
7347static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7348 u8 event, struct sk_buff *skb)
7349{
7350 struct hci_ev_cmd_complete *ev;
7351 struct hci_event_hdr *hdr;
7352
7353 if (!skb)
7354 return false;
7355
7356 hdr = hci_ev_skb_pull(hdev, skb, ev: event, len: sizeof(*hdr));
7357 if (!hdr)
7358 return false;
7359
7360 if (event) {
7361 if (hdr->evt != event)
7362 return false;
7363 return true;
7364 }
7365
7366 /* Check if request ended in Command Status - no way to retrieve
7367 * any extra parameters in this case.
7368 */
7369 if (hdr->evt == HCI_EV_CMD_STATUS)
7370 return false;
7371
7372 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7373 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7374 hdr->evt);
7375 return false;
7376 }
7377
7378 ev = hci_cc_skb_pull(hdev, skb, op: opcode, len: sizeof(*ev));
7379 if (!ev)
7380 return false;
7381
7382 if (opcode != __le16_to_cpu(ev->opcode)) {
7383 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7384 __le16_to_cpu(ev->opcode));
7385 return false;
7386 }
7387
7388 return true;
7389}
7390
7391static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7392 struct sk_buff *skb)
7393{
7394 struct hci_ev_le_advertising_info *adv;
7395 struct hci_ev_le_direct_adv_info *direct_adv;
7396 struct hci_ev_le_ext_adv_info *ext_adv;
7397 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7398 const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7399
7400 hci_dev_lock(hdev);
7401
7402 /* If we are currently suspended and this is the first BT event seen,
7403 * save the wake reason associated with the event.
7404 */
7405 if (!hdev->suspended || hdev->wake_reason)
7406 goto unlock;
7407
7408 /* Default to remote wake. Values for wake_reason are documented in the
7409 * Bluez mgmt api docs.
7410 */
7411 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7412
7413 /* Once configured for remote wakeup, we should only wake up for
7414 * reconnections. It's useful to see which device is waking us up so
7415 * keep track of the bdaddr of the connection event that woke us up.
7416 */
7417 if (event == HCI_EV_CONN_REQUEST) {
7418 bacpy(dst: &hdev->wake_addr, src: &conn_complete->bdaddr);
7419 hdev->wake_addr_type = BDADDR_BREDR;
7420 } else if (event == HCI_EV_CONN_COMPLETE) {
7421 bacpy(dst: &hdev->wake_addr, src: &conn_request->bdaddr);
7422 hdev->wake_addr_type = BDADDR_BREDR;
7423 } else if (event == HCI_EV_LE_META) {
7424 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7425 u8 subevent = le_ev->subevent;
7426 u8 *ptr = &skb->data[sizeof(*le_ev)];
7427 u8 num_reports = *ptr;
7428
7429 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7430 subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7431 subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7432 num_reports) {
7433 adv = (void *)(ptr + 1);
7434 direct_adv = (void *)(ptr + 1);
7435 ext_adv = (void *)(ptr + 1);
7436
7437 switch (subevent) {
7438 case HCI_EV_LE_ADVERTISING_REPORT:
7439 bacpy(dst: &hdev->wake_addr, src: &adv->bdaddr);
7440 hdev->wake_addr_type = adv->bdaddr_type;
7441 break;
7442 case HCI_EV_LE_DIRECT_ADV_REPORT:
7443 bacpy(dst: &hdev->wake_addr, src: &direct_adv->bdaddr);
7444 hdev->wake_addr_type = direct_adv->bdaddr_type;
7445 break;
7446 case HCI_EV_LE_EXT_ADV_REPORT:
7447 bacpy(dst: &hdev->wake_addr, src: &ext_adv->bdaddr);
7448 hdev->wake_addr_type = ext_adv->bdaddr_type;
7449 break;
7450 }
7451 }
7452 } else {
7453 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7454 }
7455
7456unlock:
7457 hci_dev_unlock(hdev);
7458}
7459
7460#define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7461[_op] = { \
7462 .req = false, \
7463 .func = _func, \
7464 .min_len = _min_len, \
7465 .max_len = _max_len, \
7466}
7467
7468#define HCI_EV(_op, _func, _len) \
7469 HCI_EV_VL(_op, _func, _len, _len)
7470
7471#define HCI_EV_STATUS(_op, _func) \
7472 HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7473
7474#define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7475[_op] = { \
7476 .req = true, \
7477 .func_req = _func, \
7478 .min_len = _min_len, \
7479 .max_len = _max_len, \
7480}
7481
7482#define HCI_EV_REQ(_op, _func, _len) \
7483 HCI_EV_REQ_VL(_op, _func, _len, _len)
7484
7485/* Entries in this table shall have their position according to the event opcode
7486 * they handle so the use of the macros above is recommend since it does attempt
7487 * to initialize at its proper index using Designated Initializers that way
7488 * events without a callback function don't have entered.
7489 */
7490static const struct hci_ev {
7491 bool req;
7492 union {
7493 void (*func)(struct hci_dev *hdev, void *data,
7494 struct sk_buff *skb);
7495 void (*func_req)(struct hci_dev *hdev, void *data,
7496 struct sk_buff *skb, u16 *opcode, u8 *status,
7497 hci_req_complete_t *req_complete,
7498 hci_req_complete_skb_t *req_complete_skb);
7499 };
7500 u16 min_len;
7501 u16 max_len;
7502} hci_ev_table[U8_MAX + 1] = {
7503 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7504 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7505 /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7506 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7507 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7508 /* [0x03 = HCI_EV_CONN_COMPLETE] */
7509 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7510 sizeof(struct hci_ev_conn_complete)),
7511 /* [0x04 = HCI_EV_CONN_REQUEST] */
7512 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7513 sizeof(struct hci_ev_conn_request)),
7514 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7515 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7516 sizeof(struct hci_ev_disconn_complete)),
7517 /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7518 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7519 sizeof(struct hci_ev_auth_complete)),
7520 /* [0x07 = HCI_EV_REMOTE_NAME] */
7521 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7522 sizeof(struct hci_ev_remote_name)),
7523 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7524 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7525 sizeof(struct hci_ev_encrypt_change)),
7526 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7527 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7528 hci_change_link_key_complete_evt,
7529 sizeof(struct hci_ev_change_link_key_complete)),
7530 /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7531 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7532 sizeof(struct hci_ev_remote_features)),
7533 /* [0x0e = HCI_EV_CMD_COMPLETE] */
7534 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7535 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7536 /* [0x0f = HCI_EV_CMD_STATUS] */
7537 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7538 sizeof(struct hci_ev_cmd_status)),
7539 /* [0x10 = HCI_EV_CMD_STATUS] */
7540 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7541 sizeof(struct hci_ev_hardware_error)),
7542 /* [0x12 = HCI_EV_ROLE_CHANGE] */
7543 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7544 sizeof(struct hci_ev_role_change)),
7545 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7546 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7547 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7548 /* [0x14 = HCI_EV_MODE_CHANGE] */
7549 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7550 sizeof(struct hci_ev_mode_change)),
7551 /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7552 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7553 sizeof(struct hci_ev_pin_code_req)),
7554 /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7555 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7556 sizeof(struct hci_ev_link_key_req)),
7557 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7558 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7559 sizeof(struct hci_ev_link_key_notify)),
7560 /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7561 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7562 sizeof(struct hci_ev_clock_offset)),
7563 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7564 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7565 sizeof(struct hci_ev_pkt_type_change)),
7566 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7567 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7568 sizeof(struct hci_ev_pscan_rep_mode)),
7569 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7570 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7571 hci_inquiry_result_with_rssi_evt,
7572 sizeof(struct hci_ev_inquiry_result_rssi),
7573 HCI_MAX_EVENT_SIZE),
7574 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7575 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7576 sizeof(struct hci_ev_remote_ext_features)),
7577 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7578 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7579 sizeof(struct hci_ev_sync_conn_complete)),
7580 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7581 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7582 hci_extended_inquiry_result_evt,
7583 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7584 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7585 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7586 sizeof(struct hci_ev_key_refresh_complete)),
7587 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7588 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7589 sizeof(struct hci_ev_io_capa_request)),
7590 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7591 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7592 sizeof(struct hci_ev_io_capa_reply)),
7593 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7594 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7595 sizeof(struct hci_ev_user_confirm_req)),
7596 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7597 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7598 sizeof(struct hci_ev_user_passkey_req)),
7599 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7600 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7601 sizeof(struct hci_ev_remote_oob_data_request)),
7602 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7603 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7604 sizeof(struct hci_ev_simple_pair_complete)),
7605 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7606 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7607 sizeof(struct hci_ev_user_passkey_notify)),
7608 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7609 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7610 sizeof(struct hci_ev_keypress_notify)),
7611 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7612 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7613 sizeof(struct hci_ev_remote_host_features)),
7614 /* [0x3e = HCI_EV_LE_META] */
7615 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7616 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7617#if IS_ENABLED(CONFIG_BT_HS)
7618 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7619 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7620 sizeof(struct hci_ev_phy_link_complete)),
7621 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7622 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7623 sizeof(struct hci_ev_channel_selected)),
7624 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7625 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7626 hci_disconn_loglink_complete_evt,
7627 sizeof(struct hci_ev_disconn_logical_link_complete)),
7628 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7629 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7630 sizeof(struct hci_ev_logical_link_complete)),
7631 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7632 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7633 hci_disconn_phylink_complete_evt,
7634 sizeof(struct hci_ev_disconn_phy_link_complete)),
7635#endif
7636 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7637 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7638 sizeof(struct hci_ev_num_comp_blocks)),
7639 /* [0xff = HCI_EV_VENDOR] */
7640 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7641};
7642
7643static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7644 u16 *opcode, u8 *status,
7645 hci_req_complete_t *req_complete,
7646 hci_req_complete_skb_t *req_complete_skb)
7647{
7648 const struct hci_ev *ev = &hci_ev_table[event];
7649 void *data;
7650
7651 if (!ev->func)
7652 return;
7653
7654 if (skb->len < ev->min_len) {
7655 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7656 event, skb->len, ev->min_len);
7657 return;
7658 }
7659
7660 /* Just warn if the length is over max_len size it still be
7661 * possible to partially parse the event so leave to callback to
7662 * decide if that is acceptable.
7663 */
7664 if (skb->len > ev->max_len)
7665 bt_dev_warn_ratelimited(hdev,
7666 "unexpected event 0x%2.2x length: %u > %u",
7667 event, skb->len, ev->max_len);
7668
7669 data = hci_ev_skb_pull(hdev, skb, ev: event, len: ev->min_len);
7670 if (!data)
7671 return;
7672
7673 if (ev->req)
7674 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7675 req_complete_skb);
7676 else
7677 ev->func(hdev, data, skb);
7678}
7679
7680void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7681{
7682 struct hci_event_hdr *hdr = (void *) skb->data;
7683 hci_req_complete_t req_complete = NULL;
7684 hci_req_complete_skb_t req_complete_skb = NULL;
7685 struct sk_buff *orig_skb = NULL;
7686 u8 status = 0, event, req_evt = 0;
7687 u16 opcode = HCI_OP_NOP;
7688
7689 if (skb->len < sizeof(*hdr)) {
7690 bt_dev_err(hdev, "Malformed HCI Event");
7691 goto done;
7692 }
7693
7694 kfree_skb(skb: hdev->recv_event);
7695 hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7696
7697 event = hdr->evt;
7698 if (!event) {
7699 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7700 event);
7701 goto done;
7702 }
7703
7704 /* Only match event if command OGF is not for LE */
7705 if (hdev->sent_cmd &&
7706 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7707 hci_skb_event(hdev->sent_cmd) == event) {
7708 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7709 status, req_complete: &req_complete, req_complete_skb: &req_complete_skb);
7710 req_evt = event;
7711 }
7712
7713 /* If it looks like we might end up having to call
7714 * req_complete_skb, store a pristine copy of the skb since the
7715 * various handlers may modify the original one through
7716 * skb_pull() calls, etc.
7717 */
7718 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7719 event == HCI_EV_CMD_COMPLETE)
7720 orig_skb = skb_clone(skb, GFP_KERNEL);
7721
7722 skb_pull(skb, HCI_EVENT_HDR_SIZE);
7723
7724 /* Store wake reason if we're suspended */
7725 hci_store_wake_reason(hdev, event, skb);
7726
7727 bt_dev_dbg(hdev, "event 0x%2.2x", event);
7728
7729 hci_event_func(hdev, event, skb, opcode: &opcode, status: &status, req_complete: &req_complete,
7730 req_complete_skb: &req_complete_skb);
7731
7732 if (req_complete) {
7733 req_complete(hdev, status, opcode);
7734 } else if (req_complete_skb) {
7735 if (!hci_get_cmd_complete(hdev, opcode, event: req_evt, skb: orig_skb)) {
7736 kfree_skb(skb: orig_skb);
7737 orig_skb = NULL;
7738 }
7739 req_complete_skb(hdev, status, opcode, orig_skb);
7740 }
7741
7742done:
7743 kfree_skb(skb: orig_skb);
7744 kfree_skb(skb);
7745 hdev->stat.evt_rx++;
7746}
7747

source code of linux/net/bluetooth/hci_event.c