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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(HCI_INQUIRY, &hdev->flags);
111 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
112 wake_up_bit(&hdev->flags, 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, 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(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(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(HCI_RESET, &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, 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(&hdev->le_accept_list);
306 hci_bdaddr_list_clear(&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, sent, 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(HCI_AUTH, &hdev->flags);
412 else
413 clear_bit(HCI_AUTH, &hdev->flags);
414 }
415
416 if (hci_dev_test_flag(hdev, HCI_MGMT))
417 mgmt_auth_enable_complete(hdev, 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(HCI_ENCRYPT, &hdev->flags);
444 else
445 clear_bit(HCI_ENCRYPT, &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(HCI_ISCAN, &hdev->flags);
474 else
475 clear_bit(HCI_ISCAN, &hdev->flags);
476
477 if (param & SCAN_PAGE)
478 set_bit(HCI_PSCAN, &hdev->flags);
479 else
480 clear_bit(HCI_PSCAN, &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 if (WARN_ON(!hdev))
520 return HCI_ERROR_UNSPECIFIED;
521
522 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
523
524 if (rp->status)
525 return rp->status;
526
527 memcpy(hdev->dev_class, rp->dev_class, 3);
528
529 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
530 hdev->dev_class[1], hdev->dev_class[0]);
531
532 return rp->status;
533}
534
535static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
536 struct sk_buff *skb)
537{
538 struct hci_ev_status *rp = data;
539 void *sent;
540
541 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
542
543 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
544 if (!sent)
545 return rp->status;
546
547 hci_dev_lock(hdev);
548
549 if (!rp->status)
550 memcpy(hdev->dev_class, sent, 3);
551
552 if (hci_dev_test_flag(hdev, HCI_MGMT))
553 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
554
555 hci_dev_unlock(hdev);
556
557 return rp->status;
558}
559
560static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
561 struct sk_buff *skb)
562{
563 struct hci_rp_read_voice_setting *rp = data;
564 __u16 setting;
565
566 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
567
568 if (rp->status)
569 return rp->status;
570
571 setting = __le16_to_cpu(rp->voice_setting);
572
573 if (hdev->voice_setting == setting)
574 return rp->status;
575
576 hdev->voice_setting = setting;
577
578 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
579
580 if (hdev->notify)
581 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
582
583 return rp->status;
584}
585
586static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
587 struct sk_buff *skb)
588{
589 struct hci_ev_status *rp = data;
590 __u16 setting;
591 void *sent;
592
593 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
594
595 if (rp->status)
596 return rp->status;
597
598 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
599 if (!sent)
600 return rp->status;
601
602 setting = get_unaligned_le16(sent);
603
604 if (hdev->voice_setting == setting)
605 return rp->status;
606
607 hdev->voice_setting = setting;
608
609 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
610
611 if (hdev->notify)
612 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
613
614 return rp->status;
615}
616
617static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
618 struct sk_buff *skb)
619{
620 struct hci_rp_read_num_supported_iac *rp = data;
621
622 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
623
624 if (rp->status)
625 return rp->status;
626
627 hdev->num_iac = rp->num_iac;
628
629 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
630
631 return rp->status;
632}
633
634static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
635 struct sk_buff *skb)
636{
637 struct hci_ev_status *rp = data;
638 struct hci_cp_write_ssp_mode *sent;
639
640 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
641
642 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
643 if (!sent)
644 return rp->status;
645
646 hci_dev_lock(hdev);
647
648 if (!rp->status) {
649 if (sent->mode)
650 hdev->features[1][0] |= LMP_HOST_SSP;
651 else
652 hdev->features[1][0] &= ~LMP_HOST_SSP;
653 }
654
655 if (!rp->status) {
656 if (sent->mode)
657 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
658 else
659 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
660 }
661
662 hci_dev_unlock(hdev);
663
664 return rp->status;
665}
666
667static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
668 struct sk_buff *skb)
669{
670 struct hci_ev_status *rp = data;
671 struct hci_cp_write_sc_support *sent;
672
673 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
674
675 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
676 if (!sent)
677 return rp->status;
678
679 hci_dev_lock(hdev);
680
681 if (!rp->status) {
682 if (sent->support)
683 hdev->features[1][0] |= LMP_HOST_SC;
684 else
685 hdev->features[1][0] &= ~LMP_HOST_SC;
686 }
687
688 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
689 if (sent->support)
690 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
691 else
692 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
693 }
694
695 hci_dev_unlock(hdev);
696
697 return rp->status;
698}
699
700static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
701 struct sk_buff *skb)
702{
703 struct hci_rp_read_local_version *rp = data;
704
705 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
706
707 if (rp->status)
708 return rp->status;
709
710 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
711 hci_dev_test_flag(hdev, HCI_CONFIG)) {
712 hdev->hci_ver = rp->hci_ver;
713 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
714 hdev->lmp_ver = rp->lmp_ver;
715 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
716 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
717 }
718
719 return rp->status;
720}
721
722static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
723 struct sk_buff *skb)
724{
725 struct hci_rp_read_enc_key_size *rp = data;
726 struct hci_conn *conn;
727 u16 handle;
728 u8 status = rp->status;
729
730 bt_dev_dbg(hdev, "status 0x%2.2x", status);
731
732 handle = le16_to_cpu(rp->handle);
733
734 hci_dev_lock(hdev);
735
736 conn = hci_conn_hash_lookup_handle(hdev, handle);
737 if (!conn) {
738 status = 0xFF;
739 goto done;
740 }
741
742 /* While unexpected, the read_enc_key_size command may fail. The most
743 * secure approach is to then assume the key size is 0 to force a
744 * disconnection.
745 */
746 if (status) {
747 bt_dev_err(hdev, "failed to read key size for handle %u",
748 handle);
749 conn->enc_key_size = 0;
750 } else {
751 conn->enc_key_size = rp->key_size;
752 status = 0;
753
754 if (conn->enc_key_size < hdev->min_enc_key_size) {
755 /* As slave role, the conn->state has been set to
756 * BT_CONNECTED and l2cap conn req might not be received
757 * yet, at this moment the l2cap layer almost does
758 * nothing with the non-zero status.
759 * So we also clear encrypt related bits, and then the
760 * handler of l2cap conn req will get the right secure
761 * state at a later time.
762 */
763 status = HCI_ERROR_AUTH_FAILURE;
764 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
765 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
766 }
767 }
768
769 hci_encrypt_cfm(conn, status);
770
771done:
772 hci_dev_unlock(hdev);
773
774 return status;
775}
776
777static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
778 struct sk_buff *skb)
779{
780 struct hci_rp_read_local_commands *rp = data;
781
782 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
783
784 if (rp->status)
785 return rp->status;
786
787 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
788 hci_dev_test_flag(hdev, HCI_CONFIG))
789 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
790
791 return rp->status;
792}
793
794static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
795 struct sk_buff *skb)
796{
797 struct hci_rp_read_auth_payload_to *rp = data;
798 struct hci_conn *conn;
799
800 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
801
802 if (rp->status)
803 return rp->status;
804
805 hci_dev_lock(hdev);
806
807 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
808 if (conn)
809 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
810
811 hci_dev_unlock(hdev);
812
813 return rp->status;
814}
815
816static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
817 struct sk_buff *skb)
818{
819 struct hci_rp_write_auth_payload_to *rp = data;
820 struct hci_conn *conn;
821 void *sent;
822
823 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
824
825 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
826 if (!sent)
827 return rp->status;
828
829 hci_dev_lock(hdev);
830
831 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
832 if (!conn) {
833 rp->status = 0xff;
834 goto unlock;
835 }
836
837 if (!rp->status)
838 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
839
840unlock:
841 hci_dev_unlock(hdev);
842
843 return rp->status;
844}
845
846static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
847 struct sk_buff *skb)
848{
849 struct hci_rp_read_local_features *rp = data;
850
851 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
852
853 if (rp->status)
854 return rp->status;
855
856 memcpy(hdev->features, rp->features, 8);
857
858 /* Adjust default settings according to features
859 * supported by device. */
860
861 if (hdev->features[0][0] & LMP_3SLOT)
862 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
863
864 if (hdev->features[0][0] & LMP_5SLOT)
865 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
866
867 if (hdev->features[0][1] & LMP_HV2) {
868 hdev->pkt_type |= (HCI_HV2);
869 hdev->esco_type |= (ESCO_HV2);
870 }
871
872 if (hdev->features[0][1] & LMP_HV3) {
873 hdev->pkt_type |= (HCI_HV3);
874 hdev->esco_type |= (ESCO_HV3);
875 }
876
877 if (lmp_esco_capable(hdev))
878 hdev->esco_type |= (ESCO_EV3);
879
880 if (hdev->features[0][4] & LMP_EV4)
881 hdev->esco_type |= (ESCO_EV4);
882
883 if (hdev->features[0][4] & LMP_EV5)
884 hdev->esco_type |= (ESCO_EV5);
885
886 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
887 hdev->esco_type |= (ESCO_2EV3);
888
889 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
890 hdev->esco_type |= (ESCO_3EV3);
891
892 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
893 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
894
895 return rp->status;
896}
897
898static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
899 struct sk_buff *skb)
900{
901 struct hci_rp_read_local_ext_features *rp = data;
902
903 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
904
905 if (rp->status)
906 return rp->status;
907
908 if (hdev->max_page < rp->max_page) {
909 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
910 &hdev->quirks))
911 bt_dev_warn(hdev, "broken local ext features page 2");
912 else
913 hdev->max_page = rp->max_page;
914 }
915
916 if (rp->page < HCI_MAX_PAGES)
917 memcpy(hdev->features[rp->page], rp->features, 8);
918
919 return rp->status;
920}
921
922static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
923 struct sk_buff *skb)
924{
925 struct hci_rp_read_flow_control_mode *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->flow_ctl_mode = rp->mode;
933
934 return rp->status;
935}
936
937static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
938 struct sk_buff *skb)
939{
940 struct hci_rp_read_buffer_size *rp = data;
941
942 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
943
944 if (rp->status)
945 return rp->status;
946
947 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
948 hdev->sco_mtu = rp->sco_mtu;
949 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
950 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
951
952 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
953 hdev->sco_mtu = 64;
954 hdev->sco_pkts = 8;
955 }
956
957 hdev->acl_cnt = hdev->acl_pkts;
958 hdev->sco_cnt = hdev->sco_pkts;
959
960 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
961 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
962
963 return rp->status;
964}
965
966static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
967 struct sk_buff *skb)
968{
969 struct hci_rp_read_bd_addr *rp = data;
970
971 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
972
973 if (rp->status)
974 return rp->status;
975
976 if (test_bit(HCI_INIT, &hdev->flags))
977 bacpy(&hdev->bdaddr, &rp->bdaddr);
978
979 if (hci_dev_test_flag(hdev, HCI_SETUP))
980 bacpy(&hdev->setup_addr, &rp->bdaddr);
981
982 return rp->status;
983}
984
985static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
986 struct sk_buff *skb)
987{
988 struct hci_rp_read_local_pairing_opts *rp = data;
989
990 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
991
992 if (rp->status)
993 return rp->status;
994
995 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
996 hci_dev_test_flag(hdev, HCI_CONFIG)) {
997 hdev->pairing_opts = rp->pairing_opts;
998 hdev->max_enc_key_size = rp->max_key_size;
999 }
1000
1001 return rp->status;
1002}
1003
1004static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
1005 struct sk_buff *skb)
1006{
1007 struct hci_rp_read_page_scan_activity *rp = data;
1008
1009 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1010
1011 if (rp->status)
1012 return rp->status;
1013
1014 if (test_bit(HCI_INIT, &hdev->flags)) {
1015 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1016 hdev->page_scan_window = __le16_to_cpu(rp->window);
1017 }
1018
1019 return rp->status;
1020}
1021
1022static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1023 struct sk_buff *skb)
1024{
1025 struct hci_ev_status *rp = data;
1026 struct hci_cp_write_page_scan_activity *sent;
1027
1028 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1029
1030 if (rp->status)
1031 return rp->status;
1032
1033 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1034 if (!sent)
1035 return rp->status;
1036
1037 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1038 hdev->page_scan_window = __le16_to_cpu(sent->window);
1039
1040 return rp->status;
1041}
1042
1043static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1044 struct sk_buff *skb)
1045{
1046 struct hci_rp_read_page_scan_type *rp = data;
1047
1048 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1049
1050 if (rp->status)
1051 return rp->status;
1052
1053 if (test_bit(HCI_INIT, &hdev->flags))
1054 hdev->page_scan_type = rp->type;
1055
1056 return rp->status;
1057}
1058
1059static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1060 struct sk_buff *skb)
1061{
1062 struct hci_ev_status *rp = data;
1063 u8 *type;
1064
1065 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1066
1067 if (rp->status)
1068 return rp->status;
1069
1070 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1071 if (type)
1072 hdev->page_scan_type = *type;
1073
1074 return rp->status;
1075}
1076
1077static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1078 struct sk_buff *skb)
1079{
1080 struct hci_rp_read_data_block_size *rp = data;
1081
1082 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1083
1084 if (rp->status)
1085 return rp->status;
1086
1087 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1088 hdev->block_len = __le16_to_cpu(rp->block_len);
1089 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1090
1091 hdev->block_cnt = hdev->num_blocks;
1092
1093 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1094 hdev->block_cnt, hdev->block_len);
1095
1096 return rp->status;
1097}
1098
1099static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1100 struct sk_buff *skb)
1101{
1102 struct hci_rp_read_clock *rp = data;
1103 struct hci_cp_read_clock *cp;
1104 struct hci_conn *conn;
1105
1106 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1107
1108 if (rp->status)
1109 return rp->status;
1110
1111 hci_dev_lock(hdev);
1112
1113 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1114 if (!cp)
1115 goto unlock;
1116
1117 if (cp->which == 0x00) {
1118 hdev->clock = le32_to_cpu(rp->clock);
1119 goto unlock;
1120 }
1121
1122 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1123 if (conn) {
1124 conn->clock = le32_to_cpu(rp->clock);
1125 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1126 }
1127
1128unlock:
1129 hci_dev_unlock(hdev);
1130 return rp->status;
1131}
1132
1133static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1134 struct sk_buff *skb)
1135{
1136 struct hci_rp_read_local_amp_info *rp = data;
1137
1138 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1139
1140 if (rp->status)
1141 return rp->status;
1142
1143 hdev->amp_status = rp->amp_status;
1144 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1145 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1146 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1147 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1148 hdev->amp_type = rp->amp_type;
1149 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1150 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1151 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1152 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1153
1154 return rp->status;
1155}
1156
1157static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1158 struct sk_buff *skb)
1159{
1160 struct hci_rp_read_inq_rsp_tx_power *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->inq_tx_power = rp->tx_power;
1168
1169 return rp->status;
1170}
1171
1172static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1173 struct sk_buff *skb)
1174{
1175 struct hci_rp_read_def_err_data_reporting *rp = data;
1176
1177 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1178
1179 if (rp->status)
1180 return rp->status;
1181
1182 hdev->err_data_reporting = rp->err_data_reporting;
1183
1184 return rp->status;
1185}
1186
1187static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1188 struct sk_buff *skb)
1189{
1190 struct hci_ev_status *rp = data;
1191 struct hci_cp_write_def_err_data_reporting *cp;
1192
1193 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1194
1195 if (rp->status)
1196 return rp->status;
1197
1198 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1199 if (!cp)
1200 return rp->status;
1201
1202 hdev->err_data_reporting = cp->err_data_reporting;
1203
1204 return rp->status;
1205}
1206
1207static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1208 struct sk_buff *skb)
1209{
1210 struct hci_rp_pin_code_reply *rp = data;
1211 struct hci_cp_pin_code_reply *cp;
1212 struct hci_conn *conn;
1213
1214 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1215
1216 hci_dev_lock(hdev);
1217
1218 if (hci_dev_test_flag(hdev, HCI_MGMT))
1219 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1220
1221 if (rp->status)
1222 goto unlock;
1223
1224 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1225 if (!cp)
1226 goto unlock;
1227
1228 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1229 if (conn)
1230 conn->pin_length = cp->pin_len;
1231
1232unlock:
1233 hci_dev_unlock(hdev);
1234 return rp->status;
1235}
1236
1237static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1238 struct sk_buff *skb)
1239{
1240 struct hci_rp_pin_code_neg_reply *rp = data;
1241
1242 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1243
1244 hci_dev_lock(hdev);
1245
1246 if (hci_dev_test_flag(hdev, HCI_MGMT))
1247 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1248 rp->status);
1249
1250 hci_dev_unlock(hdev);
1251
1252 return rp->status;
1253}
1254
1255static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1256 struct sk_buff *skb)
1257{
1258 struct hci_rp_le_read_buffer_size *rp = data;
1259
1260 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1261
1262 if (rp->status)
1263 return rp->status;
1264
1265 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1266 hdev->le_pkts = rp->le_max_pkt;
1267
1268 hdev->le_cnt = hdev->le_pkts;
1269
1270 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1271
1272 return rp->status;
1273}
1274
1275static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1276 struct sk_buff *skb)
1277{
1278 struct hci_rp_le_read_local_features *rp = data;
1279
1280 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1281
1282 if (rp->status)
1283 return rp->status;
1284
1285 memcpy(hdev->le_features, rp->features, 8);
1286
1287 return rp->status;
1288}
1289
1290static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1291 struct sk_buff *skb)
1292{
1293 struct hci_rp_le_read_adv_tx_power *rp = data;
1294
1295 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1296
1297 if (rp->status)
1298 return rp->status;
1299
1300 hdev->adv_tx_power = rp->tx_power;
1301
1302 return rp->status;
1303}
1304
1305static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1306 struct sk_buff *skb)
1307{
1308 struct hci_rp_user_confirm_reply *rp = data;
1309
1310 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1311
1312 hci_dev_lock(hdev);
1313
1314 if (hci_dev_test_flag(hdev, HCI_MGMT))
1315 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1316 rp->status);
1317
1318 hci_dev_unlock(hdev);
1319
1320 return rp->status;
1321}
1322
1323static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1324 struct sk_buff *skb)
1325{
1326 struct hci_rp_user_confirm_reply *rp = data;
1327
1328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1329
1330 hci_dev_lock(hdev);
1331
1332 if (hci_dev_test_flag(hdev, HCI_MGMT))
1333 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1334 ACL_LINK, 0, rp->status);
1335
1336 hci_dev_unlock(hdev);
1337
1338 return rp->status;
1339}
1340
1341static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1342 struct sk_buff *skb)
1343{
1344 struct hci_rp_user_confirm_reply *rp = data;
1345
1346 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1347
1348 hci_dev_lock(hdev);
1349
1350 if (hci_dev_test_flag(hdev, HCI_MGMT))
1351 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1352 0, rp->status);
1353
1354 hci_dev_unlock(hdev);
1355
1356 return rp->status;
1357}
1358
1359static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1360 struct sk_buff *skb)
1361{
1362 struct hci_rp_user_confirm_reply *rp = data;
1363
1364 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1365
1366 hci_dev_lock(hdev);
1367
1368 if (hci_dev_test_flag(hdev, HCI_MGMT))
1369 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1370 ACL_LINK, 0, rp->status);
1371
1372 hci_dev_unlock(hdev);
1373
1374 return rp->status;
1375}
1376
1377static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1378 struct sk_buff *skb)
1379{
1380 struct hci_rp_read_local_oob_data *rp = data;
1381
1382 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1383
1384 return rp->status;
1385}
1386
1387static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1388 struct sk_buff *skb)
1389{
1390 struct hci_rp_read_local_oob_ext_data *rp = data;
1391
1392 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1393
1394 return rp->status;
1395}
1396
1397static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1398 struct sk_buff *skb)
1399{
1400 struct hci_ev_status *rp = data;
1401 bdaddr_t *sent;
1402
1403 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1404
1405 if (rp->status)
1406 return rp->status;
1407
1408 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1409 if (!sent)
1410 return rp->status;
1411
1412 hci_dev_lock(hdev);
1413
1414 bacpy(&hdev->random_addr, sent);
1415
1416 if (!bacmp(&hdev->rpa, sent)) {
1417 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1418 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1419 secs_to_jiffies(hdev->rpa_timeout));
1420 }
1421
1422 hci_dev_unlock(hdev);
1423
1424 return rp->status;
1425}
1426
1427static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1428 struct sk_buff *skb)
1429{
1430 struct hci_ev_status *rp = data;
1431 struct hci_cp_le_set_default_phy *cp;
1432
1433 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1434
1435 if (rp->status)
1436 return rp->status;
1437
1438 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1439 if (!cp)
1440 return rp->status;
1441
1442 hci_dev_lock(hdev);
1443
1444 hdev->le_tx_def_phys = cp->tx_phys;
1445 hdev->le_rx_def_phys = cp->rx_phys;
1446
1447 hci_dev_unlock(hdev);
1448
1449 return rp->status;
1450}
1451
1452static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1453 struct sk_buff *skb)
1454{
1455 struct hci_ev_status *rp = data;
1456 struct hci_cp_le_set_adv_set_rand_addr *cp;
1457 struct adv_info *adv;
1458
1459 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1460
1461 if (rp->status)
1462 return rp->status;
1463
1464 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1465 /* Update only in case the adv instance since handle 0x00 shall be using
1466 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1467 * non-extended adverting.
1468 */
1469 if (!cp || !cp->handle)
1470 return rp->status;
1471
1472 hci_dev_lock(hdev);
1473
1474 adv = hci_find_adv_instance(hdev, cp->handle);
1475 if (adv) {
1476 bacpy(&adv->random_addr, &cp->bdaddr);
1477 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1478 adv->rpa_expired = false;
1479 queue_delayed_work(hdev->workqueue,
1480 &adv->rpa_expired_cb,
1481 secs_to_jiffies(hdev->rpa_timeout));
1482 }
1483 }
1484
1485 hci_dev_unlock(hdev);
1486
1487 return rp->status;
1488}
1489
1490static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1491 struct sk_buff *skb)
1492{
1493 struct hci_ev_status *rp = data;
1494 u8 *instance;
1495 int err;
1496
1497 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1498
1499 if (rp->status)
1500 return rp->status;
1501
1502 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1503 if (!instance)
1504 return rp->status;
1505
1506 hci_dev_lock(hdev);
1507
1508 err = hci_remove_adv_instance(hdev, *instance);
1509 if (!err)
1510 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1511 *instance);
1512
1513 hci_dev_unlock(hdev);
1514
1515 return rp->status;
1516}
1517
1518static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1519 struct sk_buff *skb)
1520{
1521 struct hci_ev_status *rp = data;
1522 struct adv_info *adv, *n;
1523 int err;
1524
1525 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1526
1527 if (rp->status)
1528 return rp->status;
1529
1530 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1531 return rp->status;
1532
1533 hci_dev_lock(hdev);
1534
1535 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1536 u8 instance = adv->instance;
1537
1538 err = hci_remove_adv_instance(hdev, instance);
1539 if (!err)
1540 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1541 hdev, instance);
1542 }
1543
1544 hci_dev_unlock(hdev);
1545
1546 return rp->status;
1547}
1548
1549static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1550 struct sk_buff *skb)
1551{
1552 struct hci_rp_le_read_transmit_power *rp = data;
1553
1554 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1555
1556 if (rp->status)
1557 return rp->status;
1558
1559 hdev->min_le_tx_power = rp->min_le_tx_power;
1560 hdev->max_le_tx_power = rp->max_le_tx_power;
1561
1562 return rp->status;
1563}
1564
1565static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1566 struct sk_buff *skb)
1567{
1568 struct hci_ev_status *rp = data;
1569 struct hci_cp_le_set_privacy_mode *cp;
1570 struct hci_conn_params *params;
1571
1572 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1573
1574 if (rp->status)
1575 return rp->status;
1576
1577 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1578 if (!cp)
1579 return rp->status;
1580
1581 hci_dev_lock(hdev);
1582
1583 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1584 if (params)
1585 WRITE_ONCE(params->privacy_mode, cp->mode);
1586
1587 hci_dev_unlock(hdev);
1588
1589 return rp->status;
1590}
1591
1592static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1593 struct sk_buff *skb)
1594{
1595 struct hci_ev_status *rp = data;
1596 __u8 *sent;
1597
1598 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1599
1600 if (rp->status)
1601 return rp->status;
1602
1603 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1604 if (!sent)
1605 return rp->status;
1606
1607 hci_dev_lock(hdev);
1608
1609 /* If we're doing connection initiation as peripheral. Set a
1610 * timeout in case something goes wrong.
1611 */
1612 if (*sent) {
1613 struct hci_conn *conn;
1614
1615 hci_dev_set_flag(hdev, HCI_LE_ADV);
1616
1617 conn = hci_lookup_le_connect(hdev);
1618 if (conn)
1619 queue_delayed_work(hdev->workqueue,
1620 &conn->le_conn_timeout,
1621 conn->conn_timeout);
1622 } else {
1623 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1624 }
1625
1626 hci_dev_unlock(hdev);
1627
1628 return rp->status;
1629}
1630
1631static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1632 struct sk_buff *skb)
1633{
1634 struct hci_cp_le_set_ext_adv_enable *cp;
1635 struct hci_cp_ext_adv_set *set;
1636 struct adv_info *adv = NULL, *n;
1637 struct hci_ev_status *rp = data;
1638
1639 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1640
1641 if (rp->status)
1642 return rp->status;
1643
1644 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1645 if (!cp)
1646 return rp->status;
1647
1648 set = (void *)cp->data;
1649
1650 hci_dev_lock(hdev);
1651
1652 if (cp->num_of_sets)
1653 adv = hci_find_adv_instance(hdev, set->handle);
1654
1655 if (cp->enable) {
1656 struct hci_conn *conn;
1657
1658 hci_dev_set_flag(hdev, HCI_LE_ADV);
1659
1660 if (adv && !adv->periodic)
1661 adv->enabled = true;
1662
1663 conn = hci_lookup_le_connect(hdev);
1664 if (conn)
1665 queue_delayed_work(hdev->workqueue,
1666 &conn->le_conn_timeout,
1667 conn->conn_timeout);
1668 } else {
1669 if (cp->num_of_sets) {
1670 if (adv)
1671 adv->enabled = false;
1672
1673 /* If just one instance was disabled check if there are
1674 * any other instance enabled before clearing HCI_LE_ADV
1675 */
1676 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1677 list) {
1678 if (adv->enabled)
1679 goto unlock;
1680 }
1681 } else {
1682 /* All instances shall be considered disabled */
1683 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1684 list)
1685 adv->enabled = false;
1686 }
1687
1688 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1689 }
1690
1691unlock:
1692 hci_dev_unlock(hdev);
1693 return rp->status;
1694}
1695
1696static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1697 struct sk_buff *skb)
1698{
1699 struct hci_cp_le_set_scan_param *cp;
1700 struct hci_ev_status *rp = data;
1701
1702 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1703
1704 if (rp->status)
1705 return rp->status;
1706
1707 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1708 if (!cp)
1709 return rp->status;
1710
1711 hci_dev_lock(hdev);
1712
1713 hdev->le_scan_type = cp->type;
1714
1715 hci_dev_unlock(hdev);
1716
1717 return rp->status;
1718}
1719
1720static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1721 struct sk_buff *skb)
1722{
1723 struct hci_cp_le_set_ext_scan_params *cp;
1724 struct hci_ev_status *rp = data;
1725 struct hci_cp_le_scan_phy_params *phy_param;
1726
1727 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1728
1729 if (rp->status)
1730 return rp->status;
1731
1732 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1733 if (!cp)
1734 return rp->status;
1735
1736 phy_param = (void *)cp->data;
1737
1738 hci_dev_lock(hdev);
1739
1740 hdev->le_scan_type = phy_param->type;
1741
1742 hci_dev_unlock(hdev);
1743
1744 return rp->status;
1745}
1746
1747static bool has_pending_adv_report(struct hci_dev *hdev)
1748{
1749 struct discovery_state *d = &hdev->discovery;
1750
1751 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1752}
1753
1754static void clear_pending_adv_report(struct hci_dev *hdev)
1755{
1756 struct discovery_state *d = &hdev->discovery;
1757
1758 bacpy(&d->last_adv_addr, BDADDR_ANY);
1759 d->last_adv_data_len = 0;
1760}
1761
1762static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1763 u8 bdaddr_type, s8 rssi, u32 flags,
1764 u8 *data, u8 len)
1765{
1766 struct discovery_state *d = &hdev->discovery;
1767
1768 if (len > max_adv_len(hdev))
1769 return;
1770
1771 bacpy(&d->last_adv_addr, bdaddr);
1772 d->last_adv_addr_type = bdaddr_type;
1773 d->last_adv_rssi = rssi;
1774 d->last_adv_flags = flags;
1775 memcpy(d->last_adv_data, data, len);
1776 d->last_adv_data_len = len;
1777}
1778
1779static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1780{
1781 hci_dev_lock(hdev);
1782
1783 switch (enable) {
1784 case LE_SCAN_ENABLE:
1785 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1786 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1787 clear_pending_adv_report(hdev);
1788 if (hci_dev_test_flag(hdev, HCI_MESH))
1789 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1790 break;
1791
1792 case LE_SCAN_DISABLE:
1793 /* We do this here instead of when setting DISCOVERY_STOPPED
1794 * since the latter would potentially require waiting for
1795 * inquiry to stop too.
1796 */
1797 if (has_pending_adv_report(hdev)) {
1798 struct discovery_state *d = &hdev->discovery;
1799
1800 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1801 d->last_adv_addr_type, NULL,
1802 d->last_adv_rssi, d->last_adv_flags,
1803 d->last_adv_data,
1804 d->last_adv_data_len, NULL, 0, 0);
1805 }
1806
1807 /* Cancel this timer so that we don't try to disable scanning
1808 * when it's already disabled.
1809 */
1810 cancel_delayed_work(&hdev->le_scan_disable);
1811
1812 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1813
1814 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1815 * interrupted scanning due to a connect request. Mark
1816 * therefore discovery as stopped.
1817 */
1818 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1819 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1820 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1821 hdev->discovery.state == DISCOVERY_FINDING)
1822 queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1823
1824 break;
1825
1826 default:
1827 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1828 enable);
1829 break;
1830 }
1831
1832 hci_dev_unlock(hdev);
1833}
1834
1835static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1836 struct sk_buff *skb)
1837{
1838 struct hci_cp_le_set_scan_enable *cp;
1839 struct hci_ev_status *rp = data;
1840
1841 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1842
1843 if (rp->status)
1844 return rp->status;
1845
1846 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1847 if (!cp)
1848 return rp->status;
1849
1850 le_set_scan_enable_complete(hdev, cp->enable);
1851
1852 return rp->status;
1853}
1854
1855static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1856 struct sk_buff *skb)
1857{
1858 struct hci_cp_le_set_ext_scan_enable *cp;
1859 struct hci_ev_status *rp = data;
1860
1861 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1862
1863 if (rp->status)
1864 return rp->status;
1865
1866 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1867 if (!cp)
1868 return rp->status;
1869
1870 le_set_scan_enable_complete(hdev, cp->enable);
1871
1872 return rp->status;
1873}
1874
1875static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1876 struct sk_buff *skb)
1877{
1878 struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1879
1880 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1881 rp->num_of_sets);
1882
1883 if (rp->status)
1884 return rp->status;
1885
1886 hdev->le_num_of_adv_sets = rp->num_of_sets;
1887
1888 return rp->status;
1889}
1890
1891static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1892 struct sk_buff *skb)
1893{
1894 struct hci_rp_le_read_accept_list_size *rp = data;
1895
1896 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1897
1898 if (rp->status)
1899 return rp->status;
1900
1901 hdev->le_accept_list_size = rp->size;
1902
1903 return rp->status;
1904}
1905
1906static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1907 struct sk_buff *skb)
1908{
1909 struct hci_ev_status *rp = data;
1910
1911 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1912
1913 if (rp->status)
1914 return rp->status;
1915
1916 hci_dev_lock(hdev);
1917 hci_bdaddr_list_clear(&hdev->le_accept_list);
1918 hci_dev_unlock(hdev);
1919
1920 return rp->status;
1921}
1922
1923static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1924 struct sk_buff *skb)
1925{
1926 struct hci_cp_le_add_to_accept_list *sent;
1927 struct hci_ev_status *rp = data;
1928
1929 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1930
1931 if (rp->status)
1932 return rp->status;
1933
1934 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1935 if (!sent)
1936 return rp->status;
1937
1938 hci_dev_lock(hdev);
1939 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1940 sent->bdaddr_type);
1941 hci_dev_unlock(hdev);
1942
1943 return rp->status;
1944}
1945
1946static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1947 struct sk_buff *skb)
1948{
1949 struct hci_cp_le_del_from_accept_list *sent;
1950 struct hci_ev_status *rp = data;
1951
1952 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1953
1954 if (rp->status)
1955 return rp->status;
1956
1957 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1958 if (!sent)
1959 return rp->status;
1960
1961 hci_dev_lock(hdev);
1962 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1963 sent->bdaddr_type);
1964 hci_dev_unlock(hdev);
1965
1966 return rp->status;
1967}
1968
1969static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1970 struct sk_buff *skb)
1971{
1972 struct hci_rp_le_read_supported_states *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 memcpy(hdev->le_states, rp->le_states, 8);
1980
1981 return rp->status;
1982}
1983
1984static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1985 struct sk_buff *skb)
1986{
1987 struct hci_rp_le_read_def_data_len *rp = data;
1988
1989 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1990
1991 if (rp->status)
1992 return rp->status;
1993
1994 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1995 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1996
1997 return rp->status;
1998}
1999
2000static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
2001 struct sk_buff *skb)
2002{
2003 struct hci_cp_le_write_def_data_len *sent;
2004 struct hci_ev_status *rp = data;
2005
2006 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2007
2008 if (rp->status)
2009 return rp->status;
2010
2011 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2012 if (!sent)
2013 return rp->status;
2014
2015 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2016 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2017
2018 return rp->status;
2019}
2020
2021static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2022 struct sk_buff *skb)
2023{
2024 struct hci_cp_le_add_to_resolv_list *sent;
2025 struct hci_ev_status *rp = data;
2026
2027 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2028
2029 if (rp->status)
2030 return rp->status;
2031
2032 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2033 if (!sent)
2034 return rp->status;
2035
2036 hci_dev_lock(hdev);
2037 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2038 sent->bdaddr_type, sent->peer_irk,
2039 sent->local_irk);
2040 hci_dev_unlock(hdev);
2041
2042 return rp->status;
2043}
2044
2045static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2046 struct sk_buff *skb)
2047{
2048 struct hci_cp_le_del_from_resolv_list *sent;
2049 struct hci_ev_status *rp = data;
2050
2051 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2052
2053 if (rp->status)
2054 return rp->status;
2055
2056 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2057 if (!sent)
2058 return rp->status;
2059
2060 hci_dev_lock(hdev);
2061 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2062 sent->bdaddr_type);
2063 hci_dev_unlock(hdev);
2064
2065 return rp->status;
2066}
2067
2068static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2069 struct sk_buff *skb)
2070{
2071 struct hci_ev_status *rp = data;
2072
2073 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2074
2075 if (rp->status)
2076 return rp->status;
2077
2078 hci_dev_lock(hdev);
2079 hci_bdaddr_list_clear(&hdev->le_resolv_list);
2080 hci_dev_unlock(hdev);
2081
2082 return rp->status;
2083}
2084
2085static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2086 struct sk_buff *skb)
2087{
2088 struct hci_rp_le_read_resolv_list_size *rp = data;
2089
2090 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2091
2092 if (rp->status)
2093 return rp->status;
2094
2095 hdev->le_resolv_list_size = rp->size;
2096
2097 return rp->status;
2098}
2099
2100static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2101 struct sk_buff *skb)
2102{
2103 struct hci_ev_status *rp = data;
2104 __u8 *sent;
2105
2106 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2107
2108 if (rp->status)
2109 return rp->status;
2110
2111 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2112 if (!sent)
2113 return rp->status;
2114
2115 hci_dev_lock(hdev);
2116
2117 if (*sent)
2118 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2119 else
2120 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2121
2122 hci_dev_unlock(hdev);
2123
2124 return rp->status;
2125}
2126
2127static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2128 struct sk_buff *skb)
2129{
2130 struct hci_rp_le_read_max_data_len *rp = data;
2131
2132 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2133
2134 if (rp->status)
2135 return rp->status;
2136
2137 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2138 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2139 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2140 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2141
2142 return rp->status;
2143}
2144
2145static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2146 struct sk_buff *skb)
2147{
2148 struct hci_cp_write_le_host_supported *sent;
2149 struct hci_ev_status *rp = data;
2150
2151 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2152
2153 if (rp->status)
2154 return rp->status;
2155
2156 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2157 if (!sent)
2158 return rp->status;
2159
2160 hci_dev_lock(hdev);
2161
2162 if (sent->le) {
2163 hdev->features[1][0] |= LMP_HOST_LE;
2164 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2165 } else {
2166 hdev->features[1][0] &= ~LMP_HOST_LE;
2167 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2168 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2169 }
2170
2171 if (sent->simul)
2172 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2173 else
2174 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2175
2176 hci_dev_unlock(hdev);
2177
2178 return rp->status;
2179}
2180
2181static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2182 struct sk_buff *skb)
2183{
2184 struct hci_cp_le_set_adv_param *cp;
2185 struct hci_ev_status *rp = data;
2186
2187 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2188
2189 if (rp->status)
2190 return rp->status;
2191
2192 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2193 if (!cp)
2194 return rp->status;
2195
2196 hci_dev_lock(hdev);
2197 hdev->adv_addr_type = cp->own_address_type;
2198 hci_dev_unlock(hdev);
2199
2200 return rp->status;
2201}
2202
2203static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2204 struct sk_buff *skb)
2205{
2206 struct hci_rp_le_set_ext_adv_params *rp = data;
2207 struct hci_cp_le_set_ext_adv_params *cp;
2208 struct adv_info *adv_instance;
2209
2210 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2211
2212 if (rp->status)
2213 return rp->status;
2214
2215 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2216 if (!cp)
2217 return rp->status;
2218
2219 hci_dev_lock(hdev);
2220 hdev->adv_addr_type = cp->own_addr_type;
2221 if (!cp->handle) {
2222 /* Store in hdev for instance 0 */
2223 hdev->adv_tx_power = rp->tx_power;
2224 } else {
2225 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2226 if (adv_instance)
2227 adv_instance->tx_power = rp->tx_power;
2228 }
2229 /* Update adv data as tx power is known now */
2230 hci_update_adv_data(hdev, cp->handle);
2231
2232 hci_dev_unlock(hdev);
2233
2234 return rp->status;
2235}
2236
2237static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2238 struct sk_buff *skb)
2239{
2240 struct hci_rp_read_rssi *rp = data;
2241 struct hci_conn *conn;
2242
2243 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2244
2245 if (rp->status)
2246 return rp->status;
2247
2248 hci_dev_lock(hdev);
2249
2250 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2251 if (conn)
2252 conn->rssi = rp->rssi;
2253
2254 hci_dev_unlock(hdev);
2255
2256 return rp->status;
2257}
2258
2259static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2260 struct sk_buff *skb)
2261{
2262 struct hci_cp_read_tx_power *sent;
2263 struct hci_rp_read_tx_power *rp = data;
2264 struct hci_conn *conn;
2265
2266 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2267
2268 if (rp->status)
2269 return rp->status;
2270
2271 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2272 if (!sent)
2273 return rp->status;
2274
2275 hci_dev_lock(hdev);
2276
2277 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2278 if (!conn)
2279 goto unlock;
2280
2281 switch (sent->type) {
2282 case 0x00:
2283 conn->tx_power = rp->tx_power;
2284 break;
2285 case 0x01:
2286 conn->max_tx_power = rp->tx_power;
2287 break;
2288 }
2289
2290unlock:
2291 hci_dev_unlock(hdev);
2292 return rp->status;
2293}
2294
2295static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2296 struct sk_buff *skb)
2297{
2298 struct hci_ev_status *rp = data;
2299 u8 *mode;
2300
2301 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2302
2303 if (rp->status)
2304 return rp->status;
2305
2306 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2307 if (mode)
2308 hdev->ssp_debug_mode = *mode;
2309
2310 return rp->status;
2311}
2312
2313static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2314{
2315 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2316
2317 if (status) {
2318 hci_conn_check_pending(hdev);
2319 return;
2320 }
2321
2322 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2323 set_bit(HCI_INQUIRY, &hdev->flags);
2324}
2325
2326static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2327{
2328 struct hci_cp_create_conn *cp;
2329 struct hci_conn *conn;
2330
2331 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2332
2333 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2334 if (!cp)
2335 return;
2336
2337 hci_dev_lock(hdev);
2338
2339 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2340
2341 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2342
2343 if (status) {
2344 if (conn && conn->state == BT_CONNECT) {
2345 if (status != 0x0c || conn->attempt > 2) {
2346 conn->state = BT_CLOSED;
2347 hci_connect_cfm(conn, status);
2348 hci_conn_del(conn);
2349 } else
2350 conn->state = BT_CONNECT2;
2351 }
2352 } else {
2353 if (!conn) {
2354 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2355 HCI_ROLE_MASTER);
2356 if (!conn)
2357 bt_dev_err(hdev, "no memory for new connection");
2358 }
2359 }
2360
2361 hci_dev_unlock(hdev);
2362}
2363
2364static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2365{
2366 struct hci_cp_add_sco *cp;
2367 struct hci_conn *acl;
2368 struct hci_link *link;
2369 __u16 handle;
2370
2371 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2372
2373 if (!status)
2374 return;
2375
2376 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2377 if (!cp)
2378 return;
2379
2380 handle = __le16_to_cpu(cp->handle);
2381
2382 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2383
2384 hci_dev_lock(hdev);
2385
2386 acl = hci_conn_hash_lookup_handle(hdev, handle);
2387 if (acl) {
2388 link = list_first_entry_or_null(&acl->link_list,
2389 struct hci_link, list);
2390 if (link && link->conn) {
2391 link->conn->state = BT_CLOSED;
2392
2393 hci_connect_cfm(link->conn, status);
2394 hci_conn_del(link->conn);
2395 }
2396 }
2397
2398 hci_dev_unlock(hdev);
2399}
2400
2401static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2402{
2403 struct hci_cp_auth_requested *cp;
2404 struct hci_conn *conn;
2405
2406 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2407
2408 if (!status)
2409 return;
2410
2411 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2412 if (!cp)
2413 return;
2414
2415 hci_dev_lock(hdev);
2416
2417 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2418 if (conn) {
2419 if (conn->state == BT_CONFIG) {
2420 hci_connect_cfm(conn, status);
2421 hci_conn_drop(conn);
2422 }
2423 }
2424
2425 hci_dev_unlock(hdev);
2426}
2427
2428static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2429{
2430 struct hci_cp_set_conn_encrypt *cp;
2431 struct hci_conn *conn;
2432
2433 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2434
2435 if (!status)
2436 return;
2437
2438 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2439 if (!cp)
2440 return;
2441
2442 hci_dev_lock(hdev);
2443
2444 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2445 if (conn) {
2446 if (conn->state == BT_CONFIG) {
2447 hci_connect_cfm(conn, status);
2448 hci_conn_drop(conn);
2449 }
2450 }
2451
2452 hci_dev_unlock(hdev);
2453}
2454
2455static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2456 struct hci_conn *conn)
2457{
2458 if (conn->state != BT_CONFIG || !conn->out)
2459 return 0;
2460
2461 if (conn->pending_sec_level == BT_SECURITY_SDP)
2462 return 0;
2463
2464 /* Only request authentication for SSP connections or non-SSP
2465 * devices with sec_level MEDIUM or HIGH or if MITM protection
2466 * is requested.
2467 */
2468 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2469 conn->pending_sec_level != BT_SECURITY_FIPS &&
2470 conn->pending_sec_level != BT_SECURITY_HIGH &&
2471 conn->pending_sec_level != BT_SECURITY_MEDIUM)
2472 return 0;
2473
2474 return 1;
2475}
2476
2477static int hci_resolve_name(struct hci_dev *hdev,
2478 struct inquiry_entry *e)
2479{
2480 struct hci_cp_remote_name_req cp;
2481
2482 memset(&cp, 0, sizeof(cp));
2483
2484 bacpy(&cp.bdaddr, &e->data.bdaddr);
2485 cp.pscan_rep_mode = e->data.pscan_rep_mode;
2486 cp.pscan_mode = e->data.pscan_mode;
2487 cp.clock_offset = e->data.clock_offset;
2488
2489 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2490}
2491
2492static bool hci_resolve_next_name(struct hci_dev *hdev)
2493{
2494 struct discovery_state *discov = &hdev->discovery;
2495 struct inquiry_entry *e;
2496
2497 if (list_empty(&discov->resolve))
2498 return false;
2499
2500 /* We should stop if we already spent too much time resolving names. */
2501 if (time_after(jiffies, discov->name_resolve_timeout)) {
2502 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2503 return false;
2504 }
2505
2506 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2507 if (!e)
2508 return false;
2509
2510 if (hci_resolve_name(hdev, e) == 0) {
2511 e->name_state = NAME_PENDING;
2512 return true;
2513 }
2514
2515 return false;
2516}
2517
2518static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2519 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2520{
2521 struct discovery_state *discov = &hdev->discovery;
2522 struct inquiry_entry *e;
2523
2524 /* Update the mgmt connected state if necessary. Be careful with
2525 * conn objects that exist but are not (yet) connected however.
2526 * Only those in BT_CONFIG or BT_CONNECTED states can be
2527 * considered connected.
2528 */
2529 if (conn &&
2530 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2531 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2532 mgmt_device_connected(hdev, conn, name, name_len);
2533
2534 if (discov->state == DISCOVERY_STOPPED)
2535 return;
2536
2537 if (discov->state == DISCOVERY_STOPPING)
2538 goto discov_complete;
2539
2540 if (discov->state != DISCOVERY_RESOLVING)
2541 return;
2542
2543 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2544 /* If the device was not found in a list of found devices names of which
2545 * are pending. there is no need to continue resolving a next name as it
2546 * will be done upon receiving another Remote Name Request Complete
2547 * Event */
2548 if (!e)
2549 return;
2550
2551 list_del(&e->list);
2552
2553 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2554 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2555 name, name_len);
2556
2557 if (hci_resolve_next_name(hdev))
2558 return;
2559
2560discov_complete:
2561 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2562}
2563
2564static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2565{
2566 struct hci_cp_remote_name_req *cp;
2567 struct hci_conn *conn;
2568
2569 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2570
2571 /* If successful wait for the name req complete event before
2572 * checking for the need to do authentication */
2573 if (!status)
2574 return;
2575
2576 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2577 if (!cp)
2578 return;
2579
2580 hci_dev_lock(hdev);
2581
2582 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2583
2584 if (hci_dev_test_flag(hdev, HCI_MGMT))
2585 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2586
2587 if (!conn)
2588 goto unlock;
2589
2590 if (!hci_outgoing_auth_needed(hdev, conn))
2591 goto unlock;
2592
2593 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2594 struct hci_cp_auth_requested auth_cp;
2595
2596 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2597
2598 auth_cp.handle = __cpu_to_le16(conn->handle);
2599 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2600 sizeof(auth_cp), &auth_cp);
2601 }
2602
2603unlock:
2604 hci_dev_unlock(hdev);
2605}
2606
2607static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2608{
2609 struct hci_cp_read_remote_features *cp;
2610 struct hci_conn *conn;
2611
2612 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2613
2614 if (!status)
2615 return;
2616
2617 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2618 if (!cp)
2619 return;
2620
2621 hci_dev_lock(hdev);
2622
2623 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2624 if (conn) {
2625 if (conn->state == BT_CONFIG) {
2626 hci_connect_cfm(conn, status);
2627 hci_conn_drop(conn);
2628 }
2629 }
2630
2631 hci_dev_unlock(hdev);
2632}
2633
2634static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2635{
2636 struct hci_cp_read_remote_ext_features *cp;
2637 struct hci_conn *conn;
2638
2639 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2640
2641 if (!status)
2642 return;
2643
2644 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2645 if (!cp)
2646 return;
2647
2648 hci_dev_lock(hdev);
2649
2650 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2651 if (conn) {
2652 if (conn->state == BT_CONFIG) {
2653 hci_connect_cfm(conn, status);
2654 hci_conn_drop(conn);
2655 }
2656 }
2657
2658 hci_dev_unlock(hdev);
2659}
2660
2661static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2662 __u8 status)
2663{
2664 struct hci_conn *acl;
2665 struct hci_link *link;
2666
2667 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2668
2669 hci_dev_lock(hdev);
2670
2671 acl = hci_conn_hash_lookup_handle(hdev, handle);
2672 if (acl) {
2673 link = list_first_entry_or_null(&acl->link_list,
2674 struct hci_link, list);
2675 if (link && link->conn) {
2676 link->conn->state = BT_CLOSED;
2677
2678 hci_connect_cfm(link->conn, status);
2679 hci_conn_del(link->conn);
2680 }
2681 }
2682
2683 hci_dev_unlock(hdev);
2684}
2685
2686static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2687{
2688 struct hci_cp_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_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_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2703{
2704 struct hci_cp_enhanced_setup_sync_conn *cp;
2705
2706 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2707
2708 if (!status)
2709 return;
2710
2711 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2712 if (!cp)
2713 return;
2714
2715 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2716}
2717
2718static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2719{
2720 struct hci_cp_sniff_mode *cp;
2721 struct hci_conn *conn;
2722
2723 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2724
2725 if (!status)
2726 return;
2727
2728 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2729 if (!cp)
2730 return;
2731
2732 hci_dev_lock(hdev);
2733
2734 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2735 if (conn) {
2736 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2737
2738 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2739 hci_sco_setup(conn, status);
2740 }
2741
2742 hci_dev_unlock(hdev);
2743}
2744
2745static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2746{
2747 struct hci_cp_exit_sniff_mode *cp;
2748 struct hci_conn *conn;
2749
2750 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2751
2752 if (!status)
2753 return;
2754
2755 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2756 if (!cp)
2757 return;
2758
2759 hci_dev_lock(hdev);
2760
2761 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2762 if (conn) {
2763 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2764
2765 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2766 hci_sco_setup(conn, status);
2767 }
2768
2769 hci_dev_unlock(hdev);
2770}
2771
2772static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2773{
2774 struct hci_cp_disconnect *cp;
2775 struct hci_conn_params *params;
2776 struct hci_conn *conn;
2777 bool mgmt_conn;
2778
2779 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2780
2781 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2782 * otherwise cleanup the connection immediately.
2783 */
2784 if (!status && !hdev->suspended)
2785 return;
2786
2787 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2788 if (!cp)
2789 return;
2790
2791 hci_dev_lock(hdev);
2792
2793 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2794 if (!conn)
2795 goto unlock;
2796
2797 if (status) {
2798 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2799 conn->dst_type, status);
2800
2801 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2802 hdev->cur_adv_instance = conn->adv_instance;
2803 hci_enable_advertising(hdev);
2804 }
2805
2806 /* Inform sockets conn is gone before we delete it */
2807 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2808
2809 goto done;
2810 }
2811
2812 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2813
2814 if (conn->type == ACL_LINK) {
2815 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2816 hci_remove_link_key(hdev, &conn->dst);
2817 }
2818
2819 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2820 if (params) {
2821 switch (params->auto_connect) {
2822 case HCI_AUTO_CONN_LINK_LOSS:
2823 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2824 break;
2825 fallthrough;
2826
2827 case HCI_AUTO_CONN_DIRECT:
2828 case HCI_AUTO_CONN_ALWAYS:
2829 hci_pend_le_list_del_init(params);
2830 hci_pend_le_list_add(params, &hdev->pend_le_conns);
2831 break;
2832
2833 default:
2834 break;
2835 }
2836 }
2837
2838 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2839 cp->reason, mgmt_conn);
2840
2841 hci_disconn_cfm(conn, cp->reason);
2842
2843done:
2844 /* If the disconnection failed for any reason, the upper layer
2845 * does not retry to disconnect in current implementation.
2846 * Hence, we need to do some basic cleanup here and re-enable
2847 * advertising if necessary.
2848 */
2849 hci_conn_del(conn);
2850unlock:
2851 hci_dev_unlock(hdev);
2852}
2853
2854static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2855{
2856 /* When using controller based address resolution, then the new
2857 * address types 0x02 and 0x03 are used. These types need to be
2858 * converted back into either public address or random address type
2859 */
2860 switch (type) {
2861 case ADDR_LE_DEV_PUBLIC_RESOLVED:
2862 if (resolved)
2863 *resolved = true;
2864 return ADDR_LE_DEV_PUBLIC;
2865 case ADDR_LE_DEV_RANDOM_RESOLVED:
2866 if (resolved)
2867 *resolved = true;
2868 return ADDR_LE_DEV_RANDOM;
2869 }
2870
2871 if (resolved)
2872 *resolved = false;
2873 return type;
2874}
2875
2876static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2877 u8 peer_addr_type, u8 own_address_type,
2878 u8 filter_policy)
2879{
2880 struct hci_conn *conn;
2881
2882 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2883 peer_addr_type);
2884 if (!conn)
2885 return;
2886
2887 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2888
2889 /* Store the initiator and responder address information which
2890 * is needed for SMP. These values will not change during the
2891 * lifetime of the connection.
2892 */
2893 conn->init_addr_type = own_address_type;
2894 if (own_address_type == ADDR_LE_DEV_RANDOM)
2895 bacpy(&conn->init_addr, &hdev->random_addr);
2896 else
2897 bacpy(&conn->init_addr, &hdev->bdaddr);
2898
2899 conn->resp_addr_type = peer_addr_type;
2900 bacpy(&conn->resp_addr, peer_addr);
2901}
2902
2903static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2904{
2905 struct hci_cp_le_create_conn *cp;
2906
2907 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2908
2909 /* All connection failure handling is taken care of by the
2910 * hci_conn_failed function which is triggered by the HCI
2911 * request completion callbacks used for connecting.
2912 */
2913 if (status)
2914 return;
2915
2916 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2917 if (!cp)
2918 return;
2919
2920 hci_dev_lock(hdev);
2921
2922 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2923 cp->own_address_type, cp->filter_policy);
2924
2925 hci_dev_unlock(hdev);
2926}
2927
2928static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2929{
2930 struct hci_cp_le_ext_create_conn *cp;
2931
2932 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2933
2934 /* All connection failure handling is taken care of by the
2935 * hci_conn_failed function which is triggered by the HCI
2936 * request completion callbacks used for connecting.
2937 */
2938 if (status)
2939 return;
2940
2941 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2942 if (!cp)
2943 return;
2944
2945 hci_dev_lock(hdev);
2946
2947 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2948 cp->own_addr_type, cp->filter_policy);
2949
2950 hci_dev_unlock(hdev);
2951}
2952
2953static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2954{
2955 struct hci_cp_le_read_remote_features *cp;
2956 struct hci_conn *conn;
2957
2958 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2959
2960 if (!status)
2961 return;
2962
2963 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2964 if (!cp)
2965 return;
2966
2967 hci_dev_lock(hdev);
2968
2969 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2970 if (conn) {
2971 if (conn->state == BT_CONFIG) {
2972 hci_connect_cfm(conn, status);
2973 hci_conn_drop(conn);
2974 }
2975 }
2976
2977 hci_dev_unlock(hdev);
2978}
2979
2980static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2981{
2982 struct hci_cp_le_start_enc *cp;
2983 struct hci_conn *conn;
2984
2985 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2986
2987 if (!status)
2988 return;
2989
2990 hci_dev_lock(hdev);
2991
2992 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2993 if (!cp)
2994 goto unlock;
2995
2996 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2997 if (!conn)
2998 goto unlock;
2999
3000 if (conn->state != BT_CONNECTED)
3001 goto unlock;
3002
3003 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3004 hci_conn_drop(conn);
3005
3006unlock:
3007 hci_dev_unlock(hdev);
3008}
3009
3010static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3011{
3012 struct hci_cp_switch_role *cp;
3013 struct hci_conn *conn;
3014
3015 BT_DBG("%s status 0x%2.2x", hdev->name, status);
3016
3017 if (!status)
3018 return;
3019
3020 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3021 if (!cp)
3022 return;
3023
3024 hci_dev_lock(hdev);
3025
3026 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3027 if (conn)
3028 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3029
3030 hci_dev_unlock(hdev);
3031}
3032
3033static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3034 struct sk_buff *skb)
3035{
3036 struct hci_ev_status *ev = data;
3037 struct discovery_state *discov = &hdev->discovery;
3038 struct inquiry_entry *e;
3039
3040 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3041
3042 hci_conn_check_pending(hdev);
3043
3044 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3045 return;
3046
3047 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3048 wake_up_bit(&hdev->flags, HCI_INQUIRY);
3049
3050 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3051 return;
3052
3053 hci_dev_lock(hdev);
3054
3055 if (discov->state != DISCOVERY_FINDING)
3056 goto unlock;
3057
3058 if (list_empty(&discov->resolve)) {
3059 /* When BR/EDR inquiry is active and no LE scanning is in
3060 * progress, then change discovery state to indicate completion.
3061 *
3062 * When running LE scanning and BR/EDR inquiry simultaneously
3063 * and the LE scan already finished, then change the discovery
3064 * state to indicate completion.
3065 */
3066 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3067 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3068 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3069 goto unlock;
3070 }
3071
3072 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3073 if (e && hci_resolve_name(hdev, e) == 0) {
3074 e->name_state = NAME_PENDING;
3075 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3076 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3077 } else {
3078 /* When BR/EDR inquiry is active and no LE scanning is in
3079 * progress, then change discovery state to indicate completion.
3080 *
3081 * When running LE scanning and BR/EDR inquiry simultaneously
3082 * and the LE scan already finished, then change the discovery
3083 * state to indicate completion.
3084 */
3085 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3086 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3087 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3088 }
3089
3090unlock:
3091 hci_dev_unlock(hdev);
3092}
3093
3094static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3095 struct sk_buff *skb)
3096{
3097 struct hci_ev_inquiry_result *ev = edata;
3098 struct inquiry_data data;
3099 int i;
3100
3101 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3102 flex_array_size(ev, info, ev->num)))
3103 return;
3104
3105 bt_dev_dbg(hdev, "num %d", ev->num);
3106
3107 if (!ev->num)
3108 return;
3109
3110 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3111 return;
3112
3113 hci_dev_lock(hdev);
3114
3115 for (i = 0; i < ev->num; i++) {
3116 struct inquiry_info *info = &ev->info[i];
3117 u32 flags;
3118
3119 bacpy(&data.bdaddr, &info->bdaddr);
3120 data.pscan_rep_mode = info->pscan_rep_mode;
3121 data.pscan_period_mode = info->pscan_period_mode;
3122 data.pscan_mode = info->pscan_mode;
3123 memcpy(data.dev_class, info->dev_class, 3);
3124 data.clock_offset = info->clock_offset;
3125 data.rssi = HCI_RSSI_INVALID;
3126 data.ssp_mode = 0x00;
3127
3128 flags = hci_inquiry_cache_update(hdev, &data, false);
3129
3130 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3131 info->dev_class, HCI_RSSI_INVALID,
3132 flags, NULL, 0, NULL, 0, 0);
3133 }
3134
3135 hci_dev_unlock(hdev);
3136}
3137
3138static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3139 struct sk_buff *skb)
3140{
3141 struct hci_ev_conn_complete *ev = data;
3142 struct hci_conn *conn;
3143 u8 status = ev->status;
3144
3145 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3146
3147 hci_dev_lock(hdev);
3148
3149 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3150 if (!conn) {
3151 /* In case of error status and there is no connection pending
3152 * just unlock as there is nothing to cleanup.
3153 */
3154 if (ev->status)
3155 goto unlock;
3156
3157 /* Connection may not exist if auto-connected. Check the bredr
3158 * allowlist to see if this device is allowed to auto connect.
3159 * If link is an ACL type, create a connection class
3160 * automatically.
3161 *
3162 * Auto-connect will only occur if the event filter is
3163 * programmed with a given address. Right now, event filter is
3164 * only used during suspend.
3165 */
3166 if (ev->link_type == ACL_LINK &&
3167 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3168 &ev->bdaddr,
3169 BDADDR_BREDR)) {
3170 conn = hci_conn_add_unset(hdev, ev->link_type,
3171 &ev->bdaddr, HCI_ROLE_SLAVE);
3172 if (!conn) {
3173 bt_dev_err(hdev, "no memory for new conn");
3174 goto unlock;
3175 }
3176 } else {
3177 if (ev->link_type != SCO_LINK)
3178 goto unlock;
3179
3180 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3181 &ev->bdaddr);
3182 if (!conn)
3183 goto unlock;
3184
3185 conn->type = SCO_LINK;
3186 }
3187 }
3188
3189 /* The HCI_Connection_Complete event is only sent once per connection.
3190 * Processing it more than once per connection can corrupt kernel memory.
3191 *
3192 * As the connection handle is set here for the first time, it indicates
3193 * whether the connection is already set up.
3194 */
3195 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3196 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3197 goto unlock;
3198 }
3199
3200 if (!status) {
3201 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3202 if (status)
3203 goto done;
3204
3205 if (conn->type == ACL_LINK) {
3206 conn->state = BT_CONFIG;
3207 hci_conn_hold(conn);
3208
3209 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3210 !hci_find_link_key(hdev, &ev->bdaddr))
3211 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3212 else
3213 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3214 } else
3215 conn->state = BT_CONNECTED;
3216
3217 hci_debugfs_create_conn(conn);
3218 hci_conn_add_sysfs(conn);
3219
3220 if (test_bit(HCI_AUTH, &hdev->flags))
3221 set_bit(HCI_CONN_AUTH, &conn->flags);
3222
3223 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3224 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3225
3226 /* Get remote features */
3227 if (conn->type == ACL_LINK) {
3228 struct hci_cp_read_remote_features cp;
3229 cp.handle = ev->handle;
3230 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3231 sizeof(cp), &cp);
3232
3233 hci_update_scan(hdev);
3234 }
3235
3236 /* Set packet type for incoming connection */
3237 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3238 struct hci_cp_change_conn_ptype cp;
3239 cp.handle = ev->handle;
3240 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3241 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3242 &cp);
3243 }
3244 }
3245
3246 if (conn->type == ACL_LINK)
3247 hci_sco_setup(conn, ev->status);
3248
3249done:
3250 if (status) {
3251 hci_conn_failed(conn, status);
3252 } else if (ev->link_type == SCO_LINK) {
3253 switch (conn->setting & SCO_AIRMODE_MASK) {
3254 case SCO_AIRMODE_CVSD:
3255 if (hdev->notify)
3256 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3257 break;
3258 }
3259
3260 hci_connect_cfm(conn, status);
3261 }
3262
3263unlock:
3264 hci_dev_unlock(hdev);
3265
3266 hci_conn_check_pending(hdev);
3267}
3268
3269static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3270{
3271 struct hci_cp_reject_conn_req cp;
3272
3273 bacpy(&cp.bdaddr, bdaddr);
3274 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3275 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3276}
3277
3278static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3279 struct sk_buff *skb)
3280{
3281 struct hci_ev_conn_request *ev = data;
3282 int mask = hdev->link_mode;
3283 struct inquiry_entry *ie;
3284 struct hci_conn *conn;
3285 __u8 flags = 0;
3286
3287 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3288
3289 /* Reject incoming connection from device with same BD ADDR against
3290 * CVE-2020-26555
3291 */
3292 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3293 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3294 &ev->bdaddr);
3295 hci_reject_conn(hdev, &ev->bdaddr);
3296 return;
3297 }
3298
3299 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3300 &flags);
3301
3302 if (!(mask & HCI_LM_ACCEPT)) {
3303 hci_reject_conn(hdev, &ev->bdaddr);
3304 return;
3305 }
3306
3307 hci_dev_lock(hdev);
3308
3309 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3310 BDADDR_BREDR)) {
3311 hci_reject_conn(hdev, &ev->bdaddr);
3312 goto unlock;
3313 }
3314
3315 /* Require HCI_CONNECTABLE or an accept list entry to accept the
3316 * connection. These features are only touched through mgmt so
3317 * only do the checks if HCI_MGMT is set.
3318 */
3319 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3320 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3321 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3322 BDADDR_BREDR)) {
3323 hci_reject_conn(hdev, &ev->bdaddr);
3324 goto unlock;
3325 }
3326
3327 /* Connection accepted */
3328
3329 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3330 if (ie)
3331 memcpy(ie->data.dev_class, ev->dev_class, 3);
3332
3333 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3334 &ev->bdaddr);
3335 if (!conn) {
3336 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3337 HCI_ROLE_SLAVE);
3338 if (!conn) {
3339 bt_dev_err(hdev, "no memory for new connection");
3340 goto unlock;
3341 }
3342 }
3343
3344 memcpy(conn->dev_class, ev->dev_class, 3);
3345
3346 hci_dev_unlock(hdev);
3347
3348 if (ev->link_type == ACL_LINK ||
3349 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3350 struct hci_cp_accept_conn_req cp;
3351 conn->state = BT_CONNECT;
3352
3353 bacpy(&cp.bdaddr, &ev->bdaddr);
3354
3355 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3356 cp.role = 0x00; /* Become central */
3357 else
3358 cp.role = 0x01; /* Remain peripheral */
3359
3360 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3361 } else if (!(flags & HCI_PROTO_DEFER)) {
3362 struct hci_cp_accept_sync_conn_req cp;
3363 conn->state = BT_CONNECT;
3364
3365 bacpy(&cp.bdaddr, &ev->bdaddr);
3366 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3367
3368 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
3369 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
3370 cp.max_latency = cpu_to_le16(0xffff);
3371 cp.content_format = cpu_to_le16(hdev->voice_setting);
3372 cp.retrans_effort = 0xff;
3373
3374 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3375 &cp);
3376 } else {
3377 conn->state = BT_CONNECT2;
3378 hci_connect_cfm(conn, 0);
3379 }
3380
3381 return;
3382unlock:
3383 hci_dev_unlock(hdev);
3384}
3385
3386static u8 hci_to_mgmt_reason(u8 err)
3387{
3388 switch (err) {
3389 case HCI_ERROR_CONNECTION_TIMEOUT:
3390 return MGMT_DEV_DISCONN_TIMEOUT;
3391 case HCI_ERROR_REMOTE_USER_TERM:
3392 case HCI_ERROR_REMOTE_LOW_RESOURCES:
3393 case HCI_ERROR_REMOTE_POWER_OFF:
3394 return MGMT_DEV_DISCONN_REMOTE;
3395 case HCI_ERROR_LOCAL_HOST_TERM:
3396 return MGMT_DEV_DISCONN_LOCAL_HOST;
3397 default:
3398 return MGMT_DEV_DISCONN_UNKNOWN;
3399 }
3400}
3401
3402static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3403 struct sk_buff *skb)
3404{
3405 struct hci_ev_disconn_complete *ev = data;
3406 u8 reason;
3407 struct hci_conn_params *params;
3408 struct hci_conn *conn;
3409 bool mgmt_connected;
3410
3411 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3412
3413 hci_dev_lock(hdev);
3414
3415 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3416 if (!conn)
3417 goto unlock;
3418
3419 if (ev->status) {
3420 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3421 conn->dst_type, ev->status);
3422 goto unlock;
3423 }
3424
3425 conn->state = BT_CLOSED;
3426
3427 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3428
3429 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3430 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3431 else
3432 reason = hci_to_mgmt_reason(ev->reason);
3433
3434 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3435 reason, mgmt_connected);
3436
3437 if (conn->type == ACL_LINK) {
3438 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3439 hci_remove_link_key(hdev, &conn->dst);
3440
3441 hci_update_scan(hdev);
3442 }
3443
3444 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3445 if (params) {
3446 switch (params->auto_connect) {
3447 case HCI_AUTO_CONN_LINK_LOSS:
3448 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3449 break;
3450 fallthrough;
3451
3452 case HCI_AUTO_CONN_DIRECT:
3453 case HCI_AUTO_CONN_ALWAYS:
3454 hci_pend_le_list_del_init(params);
3455 hci_pend_le_list_add(params, &hdev->pend_le_conns);
3456 hci_update_passive_scan(hdev);
3457 break;
3458
3459 default:
3460 break;
3461 }
3462 }
3463
3464 hci_disconn_cfm(conn, ev->reason);
3465
3466 /* Re-enable advertising if necessary, since it might
3467 * have been disabled by the connection. From the
3468 * HCI_LE_Set_Advertise_Enable command description in
3469 * the core specification (v4.0):
3470 * "The Controller shall continue advertising until the Host
3471 * issues an LE_Set_Advertise_Enable command with
3472 * Advertising_Enable set to 0x00 (Advertising is disabled)
3473 * or until a connection is created or until the Advertising
3474 * is timed out due to Directed Advertising."
3475 */
3476 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3477 hdev->cur_adv_instance = conn->adv_instance;
3478 hci_enable_advertising(hdev);
3479 }
3480
3481 hci_conn_del(conn);
3482
3483unlock:
3484 hci_dev_unlock(hdev);
3485}
3486
3487static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3488 struct sk_buff *skb)
3489{
3490 struct hci_ev_auth_complete *ev = data;
3491 struct hci_conn *conn;
3492
3493 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3494
3495 hci_dev_lock(hdev);
3496
3497 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3498 if (!conn)
3499 goto unlock;
3500
3501 if (!ev->status) {
3502 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3503 set_bit(HCI_CONN_AUTH, &conn->flags);
3504 conn->sec_level = conn->pending_sec_level;
3505 } else {
3506 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3507 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3508
3509 mgmt_auth_failed(conn, ev->status);
3510 }
3511
3512 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3513
3514 if (conn->state == BT_CONFIG) {
3515 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3516 struct hci_cp_set_conn_encrypt cp;
3517 cp.handle = ev->handle;
3518 cp.encrypt = 0x01;
3519 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3520 &cp);
3521 } else {
3522 conn->state = BT_CONNECTED;
3523 hci_connect_cfm(conn, ev->status);
3524 hci_conn_drop(conn);
3525 }
3526 } else {
3527 hci_auth_cfm(conn, ev->status);
3528
3529 hci_conn_hold(conn);
3530 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3531 hci_conn_drop(conn);
3532 }
3533
3534 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3535 if (!ev->status) {
3536 struct hci_cp_set_conn_encrypt cp;
3537 cp.handle = ev->handle;
3538 cp.encrypt = 0x01;
3539 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3540 &cp);
3541 } else {
3542 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3543 hci_encrypt_cfm(conn, ev->status);
3544 }
3545 }
3546
3547unlock:
3548 hci_dev_unlock(hdev);
3549}
3550
3551static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3552 struct sk_buff *skb)
3553{
3554 struct hci_ev_remote_name *ev = data;
3555 struct hci_conn *conn;
3556
3557 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3558
3559 hci_conn_check_pending(hdev);
3560
3561 hci_dev_lock(hdev);
3562
3563 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3564
3565 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3566 goto check_auth;
3567
3568 if (ev->status == 0)
3569 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3570 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3571 else
3572 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3573
3574check_auth:
3575 if (!conn)
3576 goto unlock;
3577
3578 if (!hci_outgoing_auth_needed(hdev, conn))
3579 goto unlock;
3580
3581 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3582 struct hci_cp_auth_requested cp;
3583
3584 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3585
3586 cp.handle = __cpu_to_le16(conn->handle);
3587 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3588 }
3589
3590unlock:
3591 hci_dev_unlock(hdev);
3592}
3593
3594static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3595 struct sk_buff *skb)
3596{
3597 struct hci_ev_encrypt_change *ev = data;
3598 struct hci_conn *conn;
3599
3600 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3601
3602 hci_dev_lock(hdev);
3603
3604 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3605 if (!conn)
3606 goto unlock;
3607
3608 if (!ev->status) {
3609 if (ev->encrypt) {
3610 /* Encryption implies authentication */
3611 set_bit(HCI_CONN_AUTH, &conn->flags);
3612 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3613 conn->sec_level = conn->pending_sec_level;
3614
3615 /* P-256 authentication key implies FIPS */
3616 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3617 set_bit(HCI_CONN_FIPS, &conn->flags);
3618
3619 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3620 conn->type == LE_LINK)
3621 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3622 } else {
3623 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3624 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3625 }
3626 }
3627
3628 /* We should disregard the current RPA and generate a new one
3629 * whenever the encryption procedure fails.
3630 */
3631 if (ev->status && conn->type == LE_LINK) {
3632 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3633 hci_adv_instances_set_rpa_expired(hdev, true);
3634 }
3635
3636 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3637
3638 /* Check link security requirements are met */
3639 if (!hci_conn_check_link_mode(conn))
3640 ev->status = HCI_ERROR_AUTH_FAILURE;
3641
3642 if (ev->status && conn->state == BT_CONNECTED) {
3643 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3644 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3645
3646 /* Notify upper layers so they can cleanup before
3647 * disconnecting.
3648 */
3649 hci_encrypt_cfm(conn, ev->status);
3650 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3651 hci_conn_drop(conn);
3652 goto unlock;
3653 }
3654
3655 /* Try reading the encryption key size for encrypted ACL links */
3656 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3657 struct hci_cp_read_enc_key_size cp;
3658
3659 /* Only send HCI_Read_Encryption_Key_Size if the
3660 * controller really supports it. If it doesn't, assume
3661 * the default size (16).
3662 */
3663 if (!(hdev->commands[20] & 0x10)) {
3664 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3665 goto notify;
3666 }
3667
3668 cp.handle = cpu_to_le16(conn->handle);
3669 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3670 sizeof(cp), &cp)) {
3671 bt_dev_err(hdev, "sending read key size failed");
3672 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3673 goto notify;
3674 }
3675
3676 goto unlock;
3677 }
3678
3679 /* Set the default Authenticated Payload Timeout after
3680 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3681 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3682 * sent when the link is active and Encryption is enabled, the conn
3683 * type can be either LE or ACL and controller must support LMP Ping.
3684 * Ensure for AES-CCM encryption as well.
3685 */
3686 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3687 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3688 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3689 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3690 struct hci_cp_write_auth_payload_to cp;
3691
3692 cp.handle = cpu_to_le16(conn->handle);
3693 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3694 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3695 sizeof(cp), &cp))
3696 bt_dev_err(hdev, "write auth payload timeout failed");
3697 }
3698
3699notify:
3700 hci_encrypt_cfm(conn, ev->status);
3701
3702unlock:
3703 hci_dev_unlock(hdev);
3704}
3705
3706static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3707 struct sk_buff *skb)
3708{
3709 struct hci_ev_change_link_key_complete *ev = data;
3710 struct hci_conn *conn;
3711
3712 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3713
3714 hci_dev_lock(hdev);
3715
3716 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3717 if (conn) {
3718 if (!ev->status)
3719 set_bit(HCI_CONN_SECURE, &conn->flags);
3720
3721 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3722
3723 hci_key_change_cfm(conn, ev->status);
3724 }
3725
3726 hci_dev_unlock(hdev);
3727}
3728
3729static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3730 struct sk_buff *skb)
3731{
3732 struct hci_ev_remote_features *ev = data;
3733 struct hci_conn *conn;
3734
3735 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3736
3737 hci_dev_lock(hdev);
3738
3739 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3740 if (!conn)
3741 goto unlock;
3742
3743 if (!ev->status)
3744 memcpy(conn->features[0], ev->features, 8);
3745
3746 if (conn->state != BT_CONFIG)
3747 goto unlock;
3748
3749 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3750 lmp_ext_feat_capable(conn)) {
3751 struct hci_cp_read_remote_ext_features cp;
3752 cp.handle = ev->handle;
3753 cp.page = 0x01;
3754 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3755 sizeof(cp), &cp);
3756 goto unlock;
3757 }
3758
3759 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3760 struct hci_cp_remote_name_req cp;
3761 memset(&cp, 0, sizeof(cp));
3762 bacpy(&cp.bdaddr, &conn->dst);
3763 cp.pscan_rep_mode = 0x02;
3764 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3765 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3766 mgmt_device_connected(hdev, conn, NULL, 0);
3767
3768 if (!hci_outgoing_auth_needed(hdev, conn)) {
3769 conn->state = BT_CONNECTED;
3770 hci_connect_cfm(conn, ev->status);
3771 hci_conn_drop(conn);
3772 }
3773
3774unlock:
3775 hci_dev_unlock(hdev);
3776}
3777
3778static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3779{
3780 cancel_delayed_work(&hdev->cmd_timer);
3781
3782 rcu_read_lock();
3783 if (!test_bit(HCI_RESET, &hdev->flags)) {
3784 if (ncmd) {
3785 cancel_delayed_work(&hdev->ncmd_timer);
3786 atomic_set(&hdev->cmd_cnt, 1);
3787 } else {
3788 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3789 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3790 HCI_NCMD_TIMEOUT);
3791 }
3792 }
3793 rcu_read_unlock();
3794}
3795
3796static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3797 struct sk_buff *skb)
3798{
3799 struct hci_rp_le_read_buffer_size_v2 *rp = data;
3800
3801 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3802
3803 if (rp->status)
3804 return rp->status;
3805
3806 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
3807 hdev->le_pkts = rp->acl_max_pkt;
3808 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
3809 hdev->iso_pkts = rp->iso_max_pkt;
3810
3811 hdev->le_cnt = hdev->le_pkts;
3812 hdev->iso_cnt = hdev->iso_pkts;
3813
3814 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3815 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3816
3817 return rp->status;
3818}
3819
3820static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3821{
3822 struct hci_conn *conn, *tmp;
3823
3824 lockdep_assert_held(&hdev->lock);
3825
3826 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3827 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3828 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3829 continue;
3830
3831 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3832 hci_conn_failed(conn, status);
3833 }
3834}
3835
3836static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3837 struct sk_buff *skb)
3838{
3839 struct hci_rp_le_set_cig_params *rp = data;
3840 struct hci_cp_le_set_cig_params *cp;
3841 struct hci_conn *conn;
3842 u8 status = rp->status;
3843 bool pending = false;
3844 int i;
3845
3846 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3847
3848 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3849 if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3850 rp->cig_id != cp->cig_id)) {
3851 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3852 status = HCI_ERROR_UNSPECIFIED;
3853 }
3854
3855 hci_dev_lock(hdev);
3856
3857 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3858 *
3859 * If the Status return parameter is non-zero, then the state of the CIG
3860 * and its CIS configurations shall not be changed by the command. If
3861 * the CIG did not already exist, it shall not be created.
3862 */
3863 if (status) {
3864 /* Keep current configuration, fail only the unbound CIS */
3865 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3866 goto unlock;
3867 }
3868
3869 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3870 *
3871 * If the Status return parameter is zero, then the Controller shall
3872 * set the Connection_Handle arrayed return parameter to the connection
3873 * handle(s) corresponding to the CIS configurations specified in
3874 * the CIS_IDs command parameter, in the same order.
3875 */
3876 for (i = 0; i < rp->num_handles; ++i) {
3877 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3878 cp->cis[i].cis_id);
3879 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3880 continue;
3881
3882 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3883 continue;
3884
3885 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3886 continue;
3887
3888 if (conn->state == BT_CONNECT)
3889 pending = true;
3890 }
3891
3892unlock:
3893 if (pending)
3894 hci_le_create_cis_pending(hdev);
3895
3896 hci_dev_unlock(hdev);
3897
3898 return rp->status;
3899}
3900
3901static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3902 struct sk_buff *skb)
3903{
3904 struct hci_rp_le_setup_iso_path *rp = data;
3905 struct hci_cp_le_setup_iso_path *cp;
3906 struct hci_conn *conn;
3907
3908 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3909
3910 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3911 if (!cp)
3912 return rp->status;
3913
3914 hci_dev_lock(hdev);
3915
3916 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3917 if (!conn)
3918 goto unlock;
3919
3920 if (rp->status) {
3921 hci_connect_cfm(conn, rp->status);
3922 hci_conn_del(conn);
3923 goto unlock;
3924 }
3925
3926 switch (cp->direction) {
3927 /* Input (Host to Controller) */
3928 case 0x00:
3929 /* Only confirm connection if output only */
3930 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3931 hci_connect_cfm(conn, rp->status);
3932 break;
3933 /* Output (Controller to Host) */
3934 case 0x01:
3935 /* Confirm connection since conn->iso_qos is always configured
3936 * last.
3937 */
3938 hci_connect_cfm(conn, rp->status);
3939 break;
3940 }
3941
3942unlock:
3943 hci_dev_unlock(hdev);
3944 return rp->status;
3945}
3946
3947static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3948{
3949 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3950}
3951
3952static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3953 struct sk_buff *skb)
3954{
3955 struct hci_ev_status *rp = data;
3956 struct hci_cp_le_set_per_adv_params *cp;
3957
3958 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3959
3960 if (rp->status)
3961 return rp->status;
3962
3963 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3964 if (!cp)
3965 return rp->status;
3966
3967 /* TODO: set the conn state */
3968 return rp->status;
3969}
3970
3971static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3972 struct sk_buff *skb)
3973{
3974 struct hci_ev_status *rp = data;
3975 struct hci_cp_le_set_per_adv_enable *cp;
3976 struct adv_info *adv = NULL, *n;
3977 u8 per_adv_cnt = 0;
3978
3979 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3980
3981 if (rp->status)
3982 return rp->status;
3983
3984 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3985 if (!cp)
3986 return rp->status;
3987
3988 hci_dev_lock(hdev);
3989
3990 adv = hci_find_adv_instance(hdev, cp->handle);
3991
3992 if (cp->enable) {
3993 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3994
3995 if (adv)
3996 adv->enabled = true;
3997 } else {
3998 /* If just one instance was disabled check if there are
3999 * any other instance enabled before clearing HCI_LE_PER_ADV.
4000 * The current periodic adv instance will be marked as
4001 * disabled once extended advertising is also disabled.
4002 */
4003 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4004 list) {
4005 if (adv->periodic && adv->enabled)
4006 per_adv_cnt++;
4007 }
4008
4009 if (per_adv_cnt > 1)
4010 goto unlock;
4011
4012 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4013 }
4014
4015unlock:
4016 hci_dev_unlock(hdev);
4017
4018 return rp->status;
4019}
4020
4021#define HCI_CC_VL(_op, _func, _min, _max) \
4022{ \
4023 .op = _op, \
4024 .func = _func, \
4025 .min_len = _min, \
4026 .max_len = _max, \
4027}
4028
4029#define HCI_CC(_op, _func, _len) \
4030 HCI_CC_VL(_op, _func, _len, _len)
4031
4032#define HCI_CC_STATUS(_op, _func) \
4033 HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4034
4035static const struct hci_cc {
4036 u16 op;
4037 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4038 u16 min_len;
4039 u16 max_len;
4040} hci_cc_table[] = {
4041 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4042 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4043 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4044 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4045 hci_cc_remote_name_req_cancel),
4046 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4047 sizeof(struct hci_rp_role_discovery)),
4048 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4049 sizeof(struct hci_rp_read_link_policy)),
4050 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4051 sizeof(struct hci_rp_write_link_policy)),
4052 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4053 sizeof(struct hci_rp_read_def_link_policy)),
4054 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4055 hci_cc_write_def_link_policy),
4056 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4057 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4058 sizeof(struct hci_rp_read_stored_link_key)),
4059 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4060 sizeof(struct hci_rp_delete_stored_link_key)),
4061 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4062 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4063 sizeof(struct hci_rp_read_local_name)),
4064 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4065 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4066 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4067 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4068 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4069 sizeof(struct hci_rp_read_class_of_dev)),
4070 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4071 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4072 sizeof(struct hci_rp_read_voice_setting)),
4073 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4074 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4075 sizeof(struct hci_rp_read_num_supported_iac)),
4076 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4077 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4078 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4079 sizeof(struct hci_rp_read_auth_payload_to)),
4080 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4081 sizeof(struct hci_rp_write_auth_payload_to)),
4082 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4083 sizeof(struct hci_rp_read_local_version)),
4084 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4085 sizeof(struct hci_rp_read_local_commands)),
4086 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4087 sizeof(struct hci_rp_read_local_features)),
4088 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4089 sizeof(struct hci_rp_read_local_ext_features)),
4090 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4091 sizeof(struct hci_rp_read_buffer_size)),
4092 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4093 sizeof(struct hci_rp_read_bd_addr)),
4094 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4095 sizeof(struct hci_rp_read_local_pairing_opts)),
4096 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4097 sizeof(struct hci_rp_read_page_scan_activity)),
4098 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4099 hci_cc_write_page_scan_activity),
4100 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4101 sizeof(struct hci_rp_read_page_scan_type)),
4102 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4103 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4104 sizeof(struct hci_rp_read_data_block_size)),
4105 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4106 sizeof(struct hci_rp_read_flow_control_mode)),
4107 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4108 sizeof(struct hci_rp_read_local_amp_info)),
4109 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4110 sizeof(struct hci_rp_read_clock)),
4111 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4112 sizeof(struct hci_rp_read_enc_key_size)),
4113 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4114 sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4115 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4116 hci_cc_read_def_err_data_reporting,
4117 sizeof(struct hci_rp_read_def_err_data_reporting)),
4118 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4119 hci_cc_write_def_err_data_reporting),
4120 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4121 sizeof(struct hci_rp_pin_code_reply)),
4122 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4123 sizeof(struct hci_rp_pin_code_neg_reply)),
4124 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4125 sizeof(struct hci_rp_read_local_oob_data)),
4126 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4127 sizeof(struct hci_rp_read_local_oob_ext_data)),
4128 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4129 sizeof(struct hci_rp_le_read_buffer_size)),
4130 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4131 sizeof(struct hci_rp_le_read_local_features)),
4132 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4133 sizeof(struct hci_rp_le_read_adv_tx_power)),
4134 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4135 sizeof(struct hci_rp_user_confirm_reply)),
4136 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4137 sizeof(struct hci_rp_user_confirm_reply)),
4138 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4139 sizeof(struct hci_rp_user_confirm_reply)),
4140 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4141 sizeof(struct hci_rp_user_confirm_reply)),
4142 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4143 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4144 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4145 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4146 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4147 hci_cc_le_read_accept_list_size,
4148 sizeof(struct hci_rp_le_read_accept_list_size)),
4149 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4150 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4151 hci_cc_le_add_to_accept_list),
4152 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4153 hci_cc_le_del_from_accept_list),
4154 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4155 sizeof(struct hci_rp_le_read_supported_states)),
4156 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4157 sizeof(struct hci_rp_le_read_def_data_len)),
4158 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4159 hci_cc_le_write_def_data_len),
4160 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4161 hci_cc_le_add_to_resolv_list),
4162 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4163 hci_cc_le_del_from_resolv_list),
4164 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4165 hci_cc_le_clear_resolv_list),
4166 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4167 sizeof(struct hci_rp_le_read_resolv_list_size)),
4168 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4169 hci_cc_le_set_addr_resolution_enable),
4170 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4171 sizeof(struct hci_rp_le_read_max_data_len)),
4172 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4173 hci_cc_write_le_host_supported),
4174 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4175 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4176 sizeof(struct hci_rp_read_rssi)),
4177 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4178 sizeof(struct hci_rp_read_tx_power)),
4179 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4180 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4181 hci_cc_le_set_ext_scan_param),
4182 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4183 hci_cc_le_set_ext_scan_enable),
4184 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4185 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4186 hci_cc_le_read_num_adv_sets,
4187 sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4188 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4189 sizeof(struct hci_rp_le_set_ext_adv_params)),
4190 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4191 hci_cc_le_set_ext_adv_enable),
4192 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4193 hci_cc_le_set_adv_set_random_addr),
4194 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4195 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4196 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4197 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4198 hci_cc_le_set_per_adv_enable),
4199 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4200 sizeof(struct hci_rp_le_read_transmit_power)),
4201 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4202 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4203 sizeof(struct hci_rp_le_read_buffer_size_v2)),
4204 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4205 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4206 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4207 sizeof(struct hci_rp_le_setup_iso_path)),
4208};
4209
4210static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4211 struct sk_buff *skb)
4212{
4213 void *data;
4214
4215 if (skb->len < cc->min_len) {
4216 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4217 cc->op, skb->len, cc->min_len);
4218 return HCI_ERROR_UNSPECIFIED;
4219 }
4220
4221 /* Just warn if the length is over max_len size it still be possible to
4222 * partially parse the cc so leave to callback to decide if that is
4223 * acceptable.
4224 */
4225 if (skb->len > cc->max_len)
4226 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4227 cc->op, skb->len, cc->max_len);
4228
4229 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4230 if (!data)
4231 return HCI_ERROR_UNSPECIFIED;
4232
4233 return cc->func(hdev, data, skb);
4234}
4235
4236static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4237 struct sk_buff *skb, u16 *opcode, u8 *status,
4238 hci_req_complete_t *req_complete,
4239 hci_req_complete_skb_t *req_complete_skb)
4240{
4241 struct hci_ev_cmd_complete *ev = data;
4242 int i;
4243
4244 *opcode = __le16_to_cpu(ev->opcode);
4245
4246 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4247
4248 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4249 if (hci_cc_table[i].op == *opcode) {
4250 *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4251 break;
4252 }
4253 }
4254
4255 if (i == ARRAY_SIZE(hci_cc_table)) {
4256 /* Unknown opcode, assume byte 0 contains the status, so
4257 * that e.g. __hci_cmd_sync() properly returns errors
4258 * for vendor specific commands send by HCI drivers.
4259 * If a vendor doesn't actually follow this convention we may
4260 * need to introduce a vendor CC table in order to properly set
4261 * the status.
4262 */
4263 *status = skb->data[0];
4264 }
4265
4266 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4267
4268 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4269 req_complete_skb);
4270
4271 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4272 bt_dev_err(hdev,
4273 "unexpected event for opcode 0x%4.4x", *opcode);
4274 return;
4275 }
4276
4277 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4278 queue_work(hdev->workqueue, &hdev->cmd_work);
4279}
4280
4281static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4282{
4283 struct hci_cp_le_create_cis *cp;
4284 bool pending = false;
4285 int i;
4286
4287 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4288
4289 if (!status)
4290 return;
4291
4292 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4293 if (!cp)
4294 return;
4295
4296 hci_dev_lock(hdev);
4297
4298 /* Remove connection if command failed */
4299 for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4300 struct hci_conn *conn;
4301 u16 handle;
4302
4303 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4304
4305 conn = hci_conn_hash_lookup_handle(hdev, handle);
4306 if (conn) {
4307 if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4308 &conn->flags))
4309 pending = true;
4310 conn->state = BT_CLOSED;
4311 hci_connect_cfm(conn, status);
4312 hci_conn_del(conn);
4313 }
4314 }
4315
4316 if (pending)
4317 hci_le_create_cis_pending(hdev);
4318
4319 hci_dev_unlock(hdev);
4320}
4321
4322#define HCI_CS(_op, _func) \
4323{ \
4324 .op = _op, \
4325 .func = _func, \
4326}
4327
4328static const struct hci_cs {
4329 u16 op;
4330 void (*func)(struct hci_dev *hdev, __u8 status);
4331} hci_cs_table[] = {
4332 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4333 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4334 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4335 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4336 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4337 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4338 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4339 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4340 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4341 hci_cs_read_remote_ext_features),
4342 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4343 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4344 hci_cs_enhanced_setup_sync_conn),
4345 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4346 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4347 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4348 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4349 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4350 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4351 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4352 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4353 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4354};
4355
4356static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4357 struct sk_buff *skb, u16 *opcode, u8 *status,
4358 hci_req_complete_t *req_complete,
4359 hci_req_complete_skb_t *req_complete_skb)
4360{
4361 struct hci_ev_cmd_status *ev = data;
4362 int i;
4363
4364 *opcode = __le16_to_cpu(ev->opcode);
4365 *status = ev->status;
4366
4367 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4368
4369 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4370 if (hci_cs_table[i].op == *opcode) {
4371 hci_cs_table[i].func(hdev, ev->status);
4372 break;
4373 }
4374 }
4375
4376 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4377
4378 /* Indicate request completion if the command failed. Also, if
4379 * we're not waiting for a special event and we get a success
4380 * command status we should try to flag the request as completed
4381 * (since for this kind of commands there will not be a command
4382 * complete event).
4383 */
4384 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4385 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4386 req_complete_skb);
4387 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4388 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4389 *opcode);
4390 return;
4391 }
4392 }
4393
4394 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4395 queue_work(hdev->workqueue, &hdev->cmd_work);
4396}
4397
4398static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4399 struct sk_buff *skb)
4400{
4401 struct hci_ev_hardware_error *ev = data;
4402
4403 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4404
4405 hdev->hw_error_code = ev->code;
4406
4407 queue_work(hdev->req_workqueue, &hdev->error_reset);
4408}
4409
4410static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4411 struct sk_buff *skb)
4412{
4413 struct hci_ev_role_change *ev = data;
4414 struct hci_conn *conn;
4415
4416 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4417
4418 hci_dev_lock(hdev);
4419
4420 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4421 if (conn) {
4422 if (!ev->status)
4423 conn->role = ev->role;
4424
4425 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4426
4427 hci_role_switch_cfm(conn, ev->status, ev->role);
4428 }
4429
4430 hci_dev_unlock(hdev);
4431}
4432
4433static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4434 struct sk_buff *skb)
4435{
4436 struct hci_ev_num_comp_pkts *ev = data;
4437 int i;
4438
4439 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4440 flex_array_size(ev, handles, ev->num)))
4441 return;
4442
4443 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4444 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4445 return;
4446 }
4447
4448 bt_dev_dbg(hdev, "num %d", ev->num);
4449
4450 for (i = 0; i < ev->num; i++) {
4451 struct hci_comp_pkts_info *info = &ev->handles[i];
4452 struct hci_conn *conn;
4453 __u16 handle, count;
4454
4455 handle = __le16_to_cpu(info->handle);
4456 count = __le16_to_cpu(info->count);
4457
4458 conn = hci_conn_hash_lookup_handle(hdev, handle);
4459 if (!conn)
4460 continue;
4461
4462 conn->sent -= count;
4463
4464 switch (conn->type) {
4465 case ACL_LINK:
4466 hdev->acl_cnt += count;
4467 if (hdev->acl_cnt > hdev->acl_pkts)
4468 hdev->acl_cnt = hdev->acl_pkts;
4469 break;
4470
4471 case LE_LINK:
4472 if (hdev->le_pkts) {
4473 hdev->le_cnt += count;
4474 if (hdev->le_cnt > hdev->le_pkts)
4475 hdev->le_cnt = hdev->le_pkts;
4476 } else {
4477 hdev->acl_cnt += count;
4478 if (hdev->acl_cnt > hdev->acl_pkts)
4479 hdev->acl_cnt = hdev->acl_pkts;
4480 }
4481 break;
4482
4483 case SCO_LINK:
4484 hdev->sco_cnt += count;
4485 if (hdev->sco_cnt > hdev->sco_pkts)
4486 hdev->sco_cnt = hdev->sco_pkts;
4487 break;
4488
4489 case ISO_LINK:
4490 if (hdev->iso_pkts) {
4491 hdev->iso_cnt += count;
4492 if (hdev->iso_cnt > hdev->iso_pkts)
4493 hdev->iso_cnt = hdev->iso_pkts;
4494 } else if (hdev->le_pkts) {
4495 hdev->le_cnt += count;
4496 if (hdev->le_cnt > hdev->le_pkts)
4497 hdev->le_cnt = hdev->le_pkts;
4498 } else {
4499 hdev->acl_cnt += count;
4500 if (hdev->acl_cnt > hdev->acl_pkts)
4501 hdev->acl_cnt = hdev->acl_pkts;
4502 }
4503 break;
4504
4505 default:
4506 bt_dev_err(hdev, "unknown type %d conn %p",
4507 conn->type, conn);
4508 break;
4509 }
4510 }
4511
4512 queue_work(hdev->workqueue, &hdev->tx_work);
4513}
4514
4515static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4516 __u16 handle)
4517{
4518 struct hci_chan *chan;
4519
4520 switch (hdev->dev_type) {
4521 case HCI_PRIMARY:
4522 return hci_conn_hash_lookup_handle(hdev, handle);
4523 case HCI_AMP:
4524 chan = hci_chan_lookup_handle(hdev, handle);
4525 if (chan)
4526 return chan->conn;
4527 break;
4528 default:
4529 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4530 break;
4531 }
4532
4533 return NULL;
4534}
4535
4536static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4537 struct sk_buff *skb)
4538{
4539 struct hci_ev_num_comp_blocks *ev = data;
4540 int i;
4541
4542 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4543 flex_array_size(ev, handles, ev->num_hndl)))
4544 return;
4545
4546 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4547 bt_dev_err(hdev, "wrong event for mode %d",
4548 hdev->flow_ctl_mode);
4549 return;
4550 }
4551
4552 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4553 ev->num_hndl);
4554
4555 for (i = 0; i < ev->num_hndl; i++) {
4556 struct hci_comp_blocks_info *info = &ev->handles[i];
4557 struct hci_conn *conn = NULL;
4558 __u16 handle, block_count;
4559
4560 handle = __le16_to_cpu(info->handle);
4561 block_count = __le16_to_cpu(info->blocks);
4562
4563 conn = __hci_conn_lookup_handle(hdev, handle);
4564 if (!conn)
4565 continue;
4566
4567 conn->sent -= block_count;
4568
4569 switch (conn->type) {
4570 case ACL_LINK:
4571 case AMP_LINK:
4572 hdev->block_cnt += block_count;
4573 if (hdev->block_cnt > hdev->num_blocks)
4574 hdev->block_cnt = hdev->num_blocks;
4575 break;
4576
4577 default:
4578 bt_dev_err(hdev, "unknown type %d conn %p",
4579 conn->type, conn);
4580 break;
4581 }
4582 }
4583
4584 queue_work(hdev->workqueue, &hdev->tx_work);
4585}
4586
4587static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4588 struct sk_buff *skb)
4589{
4590 struct hci_ev_mode_change *ev = data;
4591 struct hci_conn *conn;
4592
4593 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4594
4595 hci_dev_lock(hdev);
4596
4597 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4598 if (conn) {
4599 conn->mode = ev->mode;
4600
4601 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4602 &conn->flags)) {
4603 if (conn->mode == HCI_CM_ACTIVE)
4604 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4605 else
4606 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4607 }
4608
4609 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4610 hci_sco_setup(conn, ev->status);
4611 }
4612
4613 hci_dev_unlock(hdev);
4614}
4615
4616static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4617 struct sk_buff *skb)
4618{
4619 struct hci_ev_pin_code_req *ev = data;
4620 struct hci_conn *conn;
4621
4622 bt_dev_dbg(hdev, "");
4623
4624 hci_dev_lock(hdev);
4625
4626 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4627 if (!conn)
4628 goto unlock;
4629
4630 if (conn->state == BT_CONNECTED) {
4631 hci_conn_hold(conn);
4632 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4633 hci_conn_drop(conn);
4634 }
4635
4636 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4637 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4638 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4639 sizeof(ev->bdaddr), &ev->bdaddr);
4640 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4641 u8 secure;
4642
4643 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4644 secure = 1;
4645 else
4646 secure = 0;
4647
4648 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4649 }
4650
4651unlock:
4652 hci_dev_unlock(hdev);
4653}
4654
4655static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4656{
4657 if (key_type == HCI_LK_CHANGED_COMBINATION)
4658 return;
4659
4660 conn->pin_length = pin_len;
4661 conn->key_type = key_type;
4662
4663 switch (key_type) {
4664 case HCI_LK_LOCAL_UNIT:
4665 case HCI_LK_REMOTE_UNIT:
4666 case HCI_LK_DEBUG_COMBINATION:
4667 return;
4668 case HCI_LK_COMBINATION:
4669 if (pin_len == 16)
4670 conn->pending_sec_level = BT_SECURITY_HIGH;
4671 else
4672 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4673 break;
4674 case HCI_LK_UNAUTH_COMBINATION_P192:
4675 case HCI_LK_UNAUTH_COMBINATION_P256:
4676 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4677 break;
4678 case HCI_LK_AUTH_COMBINATION_P192:
4679 conn->pending_sec_level = BT_SECURITY_HIGH;
4680 break;
4681 case HCI_LK_AUTH_COMBINATION_P256:
4682 conn->pending_sec_level = BT_SECURITY_FIPS;
4683 break;
4684 }
4685}
4686
4687static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4688 struct sk_buff *skb)
4689{
4690 struct hci_ev_link_key_req *ev = data;
4691 struct hci_cp_link_key_reply cp;
4692 struct hci_conn *conn;
4693 struct link_key *key;
4694
4695 bt_dev_dbg(hdev, "");
4696
4697 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4698 return;
4699
4700 hci_dev_lock(hdev);
4701
4702 key = hci_find_link_key(hdev, &ev->bdaddr);
4703 if (!key) {
4704 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4705 goto not_found;
4706 }
4707
4708 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4709
4710 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4711 if (conn) {
4712 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4713
4714 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4715 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4716 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4717 bt_dev_dbg(hdev, "ignoring unauthenticated key");
4718 goto not_found;
4719 }
4720
4721 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4722 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4723 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4724 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4725 goto not_found;
4726 }
4727
4728 conn_set_key(conn, key->type, key->pin_len);
4729 }
4730
4731 bacpy(&cp.bdaddr, &ev->bdaddr);
4732 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4733
4734 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4735
4736 hci_dev_unlock(hdev);
4737
4738 return;
4739
4740not_found:
4741 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4742 hci_dev_unlock(hdev);
4743}
4744
4745static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4746 struct sk_buff *skb)
4747{
4748 struct hci_ev_link_key_notify *ev = data;
4749 struct hci_conn *conn;
4750 struct link_key *key;
4751 bool persistent;
4752 u8 pin_len = 0;
4753
4754 bt_dev_dbg(hdev, "");
4755
4756 hci_dev_lock(hdev);
4757
4758 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4759 if (!conn)
4760 goto unlock;
4761
4762 /* Ignore NULL link key against CVE-2020-26555 */
4763 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4764 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4765 &ev->bdaddr);
4766 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4767 hci_conn_drop(conn);
4768 goto unlock;
4769 }
4770
4771 hci_conn_hold(conn);
4772 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4773 hci_conn_drop(conn);
4774
4775 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4776 conn_set_key(conn, ev->key_type, conn->pin_length);
4777
4778 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4779 goto unlock;
4780
4781 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4782 ev->key_type, pin_len, &persistent);
4783 if (!key)
4784 goto unlock;
4785
4786 /* Update connection information since adding the key will have
4787 * fixed up the type in the case of changed combination keys.
4788 */
4789 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4790 conn_set_key(conn, key->type, key->pin_len);
4791
4792 mgmt_new_link_key(hdev, key, persistent);
4793
4794 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4795 * is set. If it's not set simply remove the key from the kernel
4796 * list (we've still notified user space about it but with
4797 * store_hint being 0).
4798 */
4799 if (key->type == HCI_LK_DEBUG_COMBINATION &&
4800 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4801 list_del_rcu(&key->list);
4802 kfree_rcu(key, rcu);
4803 goto unlock;
4804 }
4805
4806 if (persistent)
4807 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4808 else
4809 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4810
4811unlock:
4812 hci_dev_unlock(hdev);
4813}
4814
4815static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4816 struct sk_buff *skb)
4817{
4818 struct hci_ev_clock_offset *ev = data;
4819 struct hci_conn *conn;
4820
4821 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4822
4823 hci_dev_lock(hdev);
4824
4825 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4826 if (conn && !ev->status) {
4827 struct inquiry_entry *ie;
4828
4829 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4830 if (ie) {
4831 ie->data.clock_offset = ev->clock_offset;
4832 ie->timestamp = jiffies;
4833 }
4834 }
4835
4836 hci_dev_unlock(hdev);
4837}
4838
4839static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4840 struct sk_buff *skb)
4841{
4842 struct hci_ev_pkt_type_change *ev = data;
4843 struct hci_conn *conn;
4844
4845 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4846
4847 hci_dev_lock(hdev);
4848
4849 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4850 if (conn && !ev->status)
4851 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4852
4853 hci_dev_unlock(hdev);
4854}
4855
4856static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4857 struct sk_buff *skb)
4858{
4859 struct hci_ev_pscan_rep_mode *ev = data;
4860 struct inquiry_entry *ie;
4861
4862 bt_dev_dbg(hdev, "");
4863
4864 hci_dev_lock(hdev);
4865
4866 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4867 if (ie) {
4868 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4869 ie->timestamp = jiffies;
4870 }
4871
4872 hci_dev_unlock(hdev);
4873}
4874
4875static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4876 struct sk_buff *skb)
4877{
4878 struct hci_ev_inquiry_result_rssi *ev = edata;
4879 struct inquiry_data data;
4880 int i;
4881
4882 bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4883
4884 if (!ev->num)
4885 return;
4886
4887 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4888 return;
4889
4890 hci_dev_lock(hdev);
4891
4892 if (skb->len == array_size(ev->num,
4893 sizeof(struct inquiry_info_rssi_pscan))) {
4894 struct inquiry_info_rssi_pscan *info;
4895
4896 for (i = 0; i < ev->num; i++) {
4897 u32 flags;
4898
4899 info = hci_ev_skb_pull(hdev, skb,
4900 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4901 sizeof(*info));
4902 if (!info) {
4903 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4904 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4905 goto unlock;
4906 }
4907
4908 bacpy(&data.bdaddr, &info->bdaddr);
4909 data.pscan_rep_mode = info->pscan_rep_mode;
4910 data.pscan_period_mode = info->pscan_period_mode;
4911 data.pscan_mode = info->pscan_mode;
4912 memcpy(data.dev_class, info->dev_class, 3);
4913 data.clock_offset = info->clock_offset;
4914 data.rssi = info->rssi;
4915 data.ssp_mode = 0x00;
4916
4917 flags = hci_inquiry_cache_update(hdev, &data, false);
4918
4919 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4920 info->dev_class, info->rssi,
4921 flags, NULL, 0, NULL, 0, 0);
4922 }
4923 } else if (skb->len == array_size(ev->num,
4924 sizeof(struct inquiry_info_rssi))) {
4925 struct inquiry_info_rssi *info;
4926
4927 for (i = 0; i < ev->num; i++) {
4928 u32 flags;
4929
4930 info = hci_ev_skb_pull(hdev, skb,
4931 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4932 sizeof(*info));
4933 if (!info) {
4934 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4935 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4936 goto unlock;
4937 }
4938
4939 bacpy(&data.bdaddr, &info->bdaddr);
4940 data.pscan_rep_mode = info->pscan_rep_mode;
4941 data.pscan_period_mode = info->pscan_period_mode;
4942 data.pscan_mode = 0x00;
4943 memcpy(data.dev_class, info->dev_class, 3);
4944 data.clock_offset = info->clock_offset;
4945 data.rssi = info->rssi;
4946 data.ssp_mode = 0x00;
4947
4948 flags = hci_inquiry_cache_update(hdev, &data, false);
4949
4950 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4951 info->dev_class, info->rssi,
4952 flags, NULL, 0, NULL, 0, 0);
4953 }
4954 } else {
4955 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4956 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4957 }
4958unlock:
4959 hci_dev_unlock(hdev);
4960}
4961
4962static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4963 struct sk_buff *skb)
4964{
4965 struct hci_ev_remote_ext_features *ev = data;
4966 struct hci_conn *conn;
4967
4968 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4969
4970 hci_dev_lock(hdev);
4971
4972 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4973 if (!conn)
4974 goto unlock;
4975
4976 if (ev->page < HCI_MAX_PAGES)
4977 memcpy(conn->features[ev->page], ev->features, 8);
4978
4979 if (!ev->status && ev->page == 0x01) {
4980 struct inquiry_entry *ie;
4981
4982 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4983 if (ie)
4984 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4985
4986 if (ev->features[0] & LMP_HOST_SSP) {
4987 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4988 } else {
4989 /* It is mandatory by the Bluetooth specification that
4990 * Extended Inquiry Results are only used when Secure
4991 * Simple Pairing is enabled, but some devices violate
4992 * this.
4993 *
4994 * To make these devices work, the internal SSP
4995 * enabled flag needs to be cleared if the remote host
4996 * features do not indicate SSP support */
4997 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4998 }
4999
5000 if (ev->features[0] & LMP_HOST_SC)
5001 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5002 }
5003
5004 if (conn->state != BT_CONFIG)
5005 goto unlock;
5006
5007 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5008 struct hci_cp_remote_name_req cp;
5009 memset(&cp, 0, sizeof(cp));
5010 bacpy(&cp.bdaddr, &conn->dst);
5011 cp.pscan_rep_mode = 0x02;
5012 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5013 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5014 mgmt_device_connected(hdev, conn, NULL, 0);
5015
5016 if (!hci_outgoing_auth_needed(hdev, conn)) {
5017 conn->state = BT_CONNECTED;
5018 hci_connect_cfm(conn, ev->status);
5019 hci_conn_drop(conn);
5020 }
5021
5022unlock:
5023 hci_dev_unlock(hdev);
5024}
5025
5026static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5027 struct sk_buff *skb)
5028{
5029 struct hci_ev_sync_conn_complete *ev = data;
5030 struct hci_conn *conn;
5031 u8 status = ev->status;
5032
5033 switch (ev->link_type) {
5034 case SCO_LINK:
5035 case ESCO_LINK:
5036 break;
5037 default:
5038 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5039 * for HCI_Synchronous_Connection_Complete is limited to
5040 * either SCO or eSCO
5041 */
5042 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5043 return;
5044 }
5045
5046 bt_dev_dbg(hdev, "status 0x%2.2x", status);
5047
5048 hci_dev_lock(hdev);
5049
5050 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5051 if (!conn) {
5052 if (ev->link_type == ESCO_LINK)
5053 goto unlock;
5054
5055 /* When the link type in the event indicates SCO connection
5056 * and lookup of the connection object fails, then check
5057 * if an eSCO connection object exists.
5058 *
5059 * The core limits the synchronous connections to either
5060 * SCO or eSCO. The eSCO connection is preferred and tried
5061 * to be setup first and until successfully established,
5062 * the link type will be hinted as eSCO.
5063 */
5064 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5065 if (!conn)
5066 goto unlock;
5067 }
5068
5069 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5070 * Processing it more than once per connection can corrupt kernel memory.
5071 *
5072 * As the connection handle is set here for the first time, it indicates
5073 * whether the connection is already set up.
5074 */
5075 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5076 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5077 goto unlock;
5078 }
5079
5080 switch (status) {
5081 case 0x00:
5082 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5083 if (status) {
5084 conn->state = BT_CLOSED;
5085 break;
5086 }
5087
5088 conn->state = BT_CONNECTED;
5089 conn->type = ev->link_type;
5090
5091 hci_debugfs_create_conn(conn);
5092 hci_conn_add_sysfs(conn);
5093 break;
5094
5095 case 0x10: /* Connection Accept Timeout */
5096 case 0x0d: /* Connection Rejected due to Limited Resources */
5097 case 0x11: /* Unsupported Feature or Parameter Value */
5098 case 0x1c: /* SCO interval rejected */
5099 case 0x1a: /* Unsupported Remote Feature */
5100 case 0x1e: /* Invalid LMP Parameters */
5101 case 0x1f: /* Unspecified error */
5102 case 0x20: /* Unsupported LMP Parameter value */
5103 if (conn->out) {
5104 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5105 (hdev->esco_type & EDR_ESCO_MASK);
5106 if (hci_setup_sync(conn, conn->parent->handle))
5107 goto unlock;
5108 }
5109 fallthrough;
5110
5111 default:
5112 conn->state = BT_CLOSED;
5113 break;
5114 }
5115
5116 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5117 /* Notify only in case of SCO over HCI transport data path which
5118 * is zero and non-zero value shall be non-HCI transport data path
5119 */
5120 if (conn->codec.data_path == 0 && hdev->notify) {
5121 switch (ev->air_mode) {
5122 case 0x02:
5123 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5124 break;
5125 case 0x03:
5126 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5127 break;
5128 }
5129 }
5130
5131 hci_connect_cfm(conn, status);
5132 if (status)
5133 hci_conn_del(conn);
5134
5135unlock:
5136 hci_dev_unlock(hdev);
5137}
5138
5139static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5140{
5141 size_t parsed = 0;
5142
5143 while (parsed < eir_len) {
5144 u8 field_len = eir[0];
5145
5146 if (field_len == 0)
5147 return parsed;
5148
5149 parsed += field_len + 1;
5150 eir += field_len + 1;
5151 }
5152
5153 return eir_len;
5154}
5155
5156static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5157 struct sk_buff *skb)
5158{
5159 struct hci_ev_ext_inquiry_result *ev = edata;
5160 struct inquiry_data data;
5161 size_t eir_len;
5162 int i;
5163
5164 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5165 flex_array_size(ev, info, ev->num)))
5166 return;
5167
5168 bt_dev_dbg(hdev, "num %d", ev->num);
5169
5170 if (!ev->num)
5171 return;
5172
5173 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5174 return;
5175
5176 hci_dev_lock(hdev);
5177
5178 for (i = 0; i < ev->num; i++) {
5179 struct extended_inquiry_info *info = &ev->info[i];
5180 u32 flags;
5181 bool name_known;
5182
5183 bacpy(&data.bdaddr, &info->bdaddr);
5184 data.pscan_rep_mode = info->pscan_rep_mode;
5185 data.pscan_period_mode = info->pscan_period_mode;
5186 data.pscan_mode = 0x00;
5187 memcpy(data.dev_class, info->dev_class, 3);
5188 data.clock_offset = info->clock_offset;
5189 data.rssi = info->rssi;
5190 data.ssp_mode = 0x01;
5191
5192 if (hci_dev_test_flag(hdev, HCI_MGMT))
5193 name_known = eir_get_data(info->data,
5194 sizeof(info->data),
5195 EIR_NAME_COMPLETE, NULL);
5196 else
5197 name_known = true;
5198
5199 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5200
5201 eir_len = eir_get_length(info->data, sizeof(info->data));
5202
5203 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5204 info->dev_class, info->rssi,
5205 flags, info->data, eir_len, NULL, 0, 0);
5206 }
5207
5208 hci_dev_unlock(hdev);
5209}
5210
5211static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5212 struct sk_buff *skb)
5213{
5214 struct hci_ev_key_refresh_complete *ev = data;
5215 struct hci_conn *conn;
5216
5217 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5218 __le16_to_cpu(ev->handle));
5219
5220 hci_dev_lock(hdev);
5221
5222 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5223 if (!conn)
5224 goto unlock;
5225
5226 /* For BR/EDR the necessary steps are taken through the
5227 * auth_complete event.
5228 */
5229 if (conn->type != LE_LINK)
5230 goto unlock;
5231
5232 if (!ev->status)
5233 conn->sec_level = conn->pending_sec_level;
5234
5235 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5236
5237 if (ev->status && conn->state == BT_CONNECTED) {
5238 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5239 hci_conn_drop(conn);
5240 goto unlock;
5241 }
5242
5243 if (conn->state == BT_CONFIG) {
5244 if (!ev->status)
5245 conn->state = BT_CONNECTED;
5246
5247 hci_connect_cfm(conn, ev->status);
5248 hci_conn_drop(conn);
5249 } else {
5250 hci_auth_cfm(conn, ev->status);
5251
5252 hci_conn_hold(conn);
5253 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5254 hci_conn_drop(conn);
5255 }
5256
5257unlock:
5258 hci_dev_unlock(hdev);
5259}
5260
5261static u8 hci_get_auth_req(struct hci_conn *conn)
5262{
5263 /* If remote requests no-bonding follow that lead */
5264 if (conn->remote_auth == HCI_AT_NO_BONDING ||
5265 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5266 return conn->remote_auth | (conn->auth_type & 0x01);
5267
5268 /* If both remote and local have enough IO capabilities, require
5269 * MITM protection
5270 */
5271 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5272 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5273 return conn->remote_auth | 0x01;
5274
5275 /* No MITM protection possible so ignore remote requirement */
5276 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5277}
5278
5279static u8 bredr_oob_data_present(struct hci_conn *conn)
5280{
5281 struct hci_dev *hdev = conn->hdev;
5282 struct oob_data *data;
5283
5284 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5285 if (!data)
5286 return 0x00;
5287
5288 if (bredr_sc_enabled(hdev)) {
5289 /* When Secure Connections is enabled, then just
5290 * return the present value stored with the OOB
5291 * data. The stored value contains the right present
5292 * information. However it can only be trusted when
5293 * not in Secure Connection Only mode.
5294 */
5295 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5296 return data->present;
5297
5298 /* When Secure Connections Only mode is enabled, then
5299 * the P-256 values are required. If they are not
5300 * available, then do not declare that OOB data is
5301 * present.
5302 */
5303 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5304 !crypto_memneq(data->hash256, ZERO_KEY, 16))
5305 return 0x00;
5306
5307 return 0x02;
5308 }
5309
5310 /* When Secure Connections is not enabled or actually
5311 * not supported by the hardware, then check that if
5312 * P-192 data values are present.
5313 */
5314 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5315 !crypto_memneq(data->hash192, ZERO_KEY, 16))
5316 return 0x00;
5317
5318 return 0x01;
5319}
5320
5321static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5322 struct sk_buff *skb)
5323{
5324 struct hci_ev_io_capa_request *ev = data;
5325 struct hci_conn *conn;
5326
5327 bt_dev_dbg(hdev, "");
5328
5329 hci_dev_lock(hdev);
5330
5331 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5332 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5333 goto unlock;
5334
5335 /* Assume remote supports SSP since it has triggered this event */
5336 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5337
5338 hci_conn_hold(conn);
5339
5340 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5341 goto unlock;
5342
5343 /* Allow pairing if we're pairable, the initiators of the
5344 * pairing or if the remote is not requesting bonding.
5345 */
5346 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5347 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5348 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5349 struct hci_cp_io_capability_reply cp;
5350
5351 bacpy(&cp.bdaddr, &ev->bdaddr);
5352 /* Change the IO capability from KeyboardDisplay
5353 * to DisplayYesNo as it is not supported by BT spec. */
5354 cp.capability = (conn->io_capability == 0x04) ?
5355 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5356
5357 /* If we are initiators, there is no remote information yet */
5358 if (conn->remote_auth == 0xff) {
5359 /* Request MITM protection if our IO caps allow it
5360 * except for the no-bonding case.
5361 */
5362 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5363 conn->auth_type != HCI_AT_NO_BONDING)
5364 conn->auth_type |= 0x01;
5365 } else {
5366 conn->auth_type = hci_get_auth_req(conn);
5367 }
5368
5369 /* If we're not bondable, force one of the non-bondable
5370 * authentication requirement values.
5371 */
5372 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5373 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5374
5375 cp.authentication = conn->auth_type;
5376 cp.oob_data = bredr_oob_data_present(conn);
5377
5378 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5379 sizeof(cp), &cp);
5380 } else {
5381 struct hci_cp_io_capability_neg_reply cp;
5382
5383 bacpy(&cp.bdaddr, &ev->bdaddr);
5384 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5385
5386 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5387 sizeof(cp), &cp);
5388 }
5389
5390unlock:
5391 hci_dev_unlock(hdev);
5392}
5393
5394static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5395 struct sk_buff *skb)
5396{
5397 struct hci_ev_io_capa_reply *ev = data;
5398 struct hci_conn *conn;
5399
5400 bt_dev_dbg(hdev, "");
5401
5402 hci_dev_lock(hdev);
5403
5404 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5405 if (!conn)
5406 goto unlock;
5407
5408 conn->remote_cap = ev->capability;
5409 conn->remote_auth = ev->authentication;
5410
5411unlock:
5412 hci_dev_unlock(hdev);
5413}
5414
5415static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5416 struct sk_buff *skb)
5417{
5418 struct hci_ev_user_confirm_req *ev = data;
5419 int loc_mitm, rem_mitm, confirm_hint = 0;
5420 struct hci_conn *conn;
5421
5422 bt_dev_dbg(hdev, "");
5423
5424 hci_dev_lock(hdev);
5425
5426 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5427 goto unlock;
5428
5429 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5430 if (!conn)
5431 goto unlock;
5432
5433 loc_mitm = (conn->auth_type & 0x01);
5434 rem_mitm = (conn->remote_auth & 0x01);
5435
5436 /* If we require MITM but the remote device can't provide that
5437 * (it has NoInputNoOutput) then reject the confirmation
5438 * request. We check the security level here since it doesn't
5439 * necessarily match conn->auth_type.
5440 */
5441 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5442 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5443 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5444 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5445 sizeof(ev->bdaddr), &ev->bdaddr);
5446 goto unlock;
5447 }
5448
5449 /* If no side requires MITM protection; auto-accept */
5450 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5451 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5452
5453 /* If we're not the initiators request authorization to
5454 * proceed from user space (mgmt_user_confirm with
5455 * confirm_hint set to 1). The exception is if neither
5456 * side had MITM or if the local IO capability is
5457 * NoInputNoOutput, in which case we do auto-accept
5458 */
5459 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5460 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5461 (loc_mitm || rem_mitm)) {
5462 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5463 confirm_hint = 1;
5464 goto confirm;
5465 }
5466
5467 /* If there already exists link key in local host, leave the
5468 * decision to user space since the remote device could be
5469 * legitimate or malicious.
5470 */
5471 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5472 bt_dev_dbg(hdev, "Local host already has link key");
5473 confirm_hint = 1;
5474 goto confirm;
5475 }
5476
5477 BT_DBG("Auto-accept of user confirmation with %ums delay",
5478 hdev->auto_accept_delay);
5479
5480 if (hdev->auto_accept_delay > 0) {
5481 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5482 queue_delayed_work(conn->hdev->workqueue,
5483 &conn->auto_accept_work, delay);
5484 goto unlock;
5485 }
5486
5487 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5488 sizeof(ev->bdaddr), &ev->bdaddr);
5489 goto unlock;
5490 }
5491
5492confirm:
5493 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5494 le32_to_cpu(ev->passkey), confirm_hint);
5495
5496unlock:
5497 hci_dev_unlock(hdev);
5498}
5499
5500static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5501 struct sk_buff *skb)
5502{
5503 struct hci_ev_user_passkey_req *ev = data;
5504
5505 bt_dev_dbg(hdev, "");
5506
5507 if (hci_dev_test_flag(hdev, HCI_MGMT))
5508 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5509}
5510
5511static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5512 struct sk_buff *skb)
5513{
5514 struct hci_ev_user_passkey_notify *ev = data;
5515 struct hci_conn *conn;
5516
5517 bt_dev_dbg(hdev, "");
5518
5519 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5520 if (!conn)
5521 return;
5522
5523 conn->passkey_notify = __le32_to_cpu(ev->passkey);
5524 conn->passkey_entered = 0;
5525
5526 if (hci_dev_test_flag(hdev, HCI_MGMT))
5527 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5528 conn->dst_type, conn->passkey_notify,
5529 conn->passkey_entered);
5530}
5531
5532static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5533 struct sk_buff *skb)
5534{
5535 struct hci_ev_keypress_notify *ev = data;
5536 struct hci_conn *conn;
5537
5538 bt_dev_dbg(hdev, "");
5539
5540 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5541 if (!conn)
5542 return;
5543
5544 switch (ev->type) {
5545 case HCI_KEYPRESS_STARTED:
5546 conn->passkey_entered = 0;
5547 return;
5548
5549 case HCI_KEYPRESS_ENTERED:
5550 conn->passkey_entered++;
5551 break;
5552
5553 case HCI_KEYPRESS_ERASED:
5554 conn->passkey_entered--;
5555 break;
5556
5557 case HCI_KEYPRESS_CLEARED:
5558 conn->passkey_entered = 0;
5559 break;
5560
5561 case HCI_KEYPRESS_COMPLETED:
5562 return;
5563 }
5564
5565 if (hci_dev_test_flag(hdev, HCI_MGMT))
5566 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5567 conn->dst_type, conn->passkey_notify,
5568 conn->passkey_entered);
5569}
5570
5571static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5572 struct sk_buff *skb)
5573{
5574 struct hci_ev_simple_pair_complete *ev = data;
5575 struct hci_conn *conn;
5576
5577 bt_dev_dbg(hdev, "");
5578
5579 hci_dev_lock(hdev);
5580
5581 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5582 if (!conn || !hci_conn_ssp_enabled(conn))
5583 goto unlock;
5584
5585 /* Reset the authentication requirement to unknown */
5586 conn->remote_auth = 0xff;
5587
5588 /* To avoid duplicate auth_failed events to user space we check
5589 * the HCI_CONN_AUTH_PEND flag which will be set if we
5590 * initiated the authentication. A traditional auth_complete
5591 * event gets always produced as initiator and is also mapped to
5592 * the mgmt_auth_failed event */
5593 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5594 mgmt_auth_failed(conn, ev->status);
5595
5596 hci_conn_drop(conn);
5597
5598unlock:
5599 hci_dev_unlock(hdev);
5600}
5601
5602static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5603 struct sk_buff *skb)
5604{
5605 struct hci_ev_remote_host_features *ev = data;
5606 struct inquiry_entry *ie;
5607 struct hci_conn *conn;
5608
5609 bt_dev_dbg(hdev, "");
5610
5611 hci_dev_lock(hdev);
5612
5613 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5614 if (conn)
5615 memcpy(conn->features[1], ev->features, 8);
5616
5617 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5618 if (ie)
5619 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5620
5621 hci_dev_unlock(hdev);
5622}
5623
5624static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5625 struct sk_buff *skb)
5626{
5627 struct hci_ev_remote_oob_data_request *ev = edata;
5628 struct oob_data *data;
5629
5630 bt_dev_dbg(hdev, "");
5631
5632 hci_dev_lock(hdev);
5633
5634 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5635 goto unlock;
5636
5637 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5638 if (!data) {
5639 struct hci_cp_remote_oob_data_neg_reply cp;
5640
5641 bacpy(&cp.bdaddr, &ev->bdaddr);
5642 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5643 sizeof(cp), &cp);
5644 goto unlock;
5645 }
5646
5647 if (bredr_sc_enabled(hdev)) {
5648 struct hci_cp_remote_oob_ext_data_reply cp;
5649
5650 bacpy(&cp.bdaddr, &ev->bdaddr);
5651 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5652 memset(cp.hash192, 0, sizeof(cp.hash192));
5653 memset(cp.rand192, 0, sizeof(cp.rand192));
5654 } else {
5655 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5656 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5657 }
5658 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5659 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5660
5661 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5662 sizeof(cp), &cp);
5663 } else {
5664 struct hci_cp_remote_oob_data_reply cp;
5665
5666 bacpy(&cp.bdaddr, &ev->bdaddr);
5667 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5668 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5669
5670 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5671 sizeof(cp), &cp);
5672 }
5673
5674unlock:
5675 hci_dev_unlock(hdev);
5676}
5677
5678#if IS_ENABLED(CONFIG_BT_HS)
5679static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5680 struct sk_buff *skb)
5681{
5682 struct hci_ev_channel_selected *ev = data;
5683 struct hci_conn *hcon;
5684
5685 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5686
5687 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5688 if (!hcon)
5689 return;
5690
5691 amp_read_loc_assoc_final_data(hdev, hcon);
5692}
5693
5694static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5695 struct sk_buff *skb)
5696{
5697 struct hci_ev_phy_link_complete *ev = data;
5698 struct hci_conn *hcon, *bredr_hcon;
5699
5700 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5701 ev->status);
5702
5703 hci_dev_lock(hdev);
5704
5705 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5706 if (!hcon)
5707 goto unlock;
5708
5709 if (!hcon->amp_mgr)
5710 goto unlock;
5711
5712 if (ev->status) {
5713 hci_conn_del(hcon);
5714 goto unlock;
5715 }
5716
5717 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5718
5719 hcon->state = BT_CONNECTED;
5720 bacpy(&hcon->dst, &bredr_hcon->dst);
5721
5722 hci_conn_hold(hcon);
5723 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5724 hci_conn_drop(hcon);
5725
5726 hci_debugfs_create_conn(hcon);
5727 hci_conn_add_sysfs(hcon);
5728
5729 amp_physical_cfm(bredr_hcon, hcon);
5730
5731unlock:
5732 hci_dev_unlock(hdev);
5733}
5734
5735static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5736 struct sk_buff *skb)
5737{
5738 struct hci_ev_logical_link_complete *ev = data;
5739 struct hci_conn *hcon;
5740 struct hci_chan *hchan;
5741 struct amp_mgr *mgr;
5742
5743 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5744 le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5745
5746 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5747 if (!hcon)
5748 return;
5749
5750 /* Create AMP hchan */
5751 hchan = hci_chan_create(hcon);
5752 if (!hchan)
5753 return;
5754
5755 hchan->handle = le16_to_cpu(ev->handle);
5756 hchan->amp = true;
5757
5758 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5759
5760 mgr = hcon->amp_mgr;
5761 if (mgr && mgr->bredr_chan) {
5762 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5763
5764 l2cap_chan_lock(bredr_chan);
5765
5766 bredr_chan->conn->mtu = hdev->block_mtu;
5767 l2cap_logical_cfm(bredr_chan, hchan, 0);
5768 hci_conn_hold(hcon);
5769
5770 l2cap_chan_unlock(bredr_chan);
5771 }
5772}
5773
5774static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5775 struct sk_buff *skb)
5776{
5777 struct hci_ev_disconn_logical_link_complete *ev = data;
5778 struct hci_chan *hchan;
5779
5780 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5781 le16_to_cpu(ev->handle), ev->status);
5782
5783 if (ev->status)
5784 return;
5785
5786 hci_dev_lock(hdev);
5787
5788 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5789 if (!hchan || !hchan->amp)
5790 goto unlock;
5791
5792 amp_destroy_logical_link(hchan, ev->reason);
5793
5794unlock:
5795 hci_dev_unlock(hdev);
5796}
5797
5798static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5799 struct sk_buff *skb)
5800{
5801 struct hci_ev_disconn_phy_link_complete *ev = data;
5802 struct hci_conn *hcon;
5803
5804 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5805
5806 if (ev->status)
5807 return;
5808
5809 hci_dev_lock(hdev);
5810
5811 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5812 if (hcon && hcon->type == AMP_LINK) {
5813 hcon->state = BT_CLOSED;
5814 hci_disconn_cfm(hcon, ev->reason);
5815 hci_conn_del(hcon);
5816 }
5817
5818 hci_dev_unlock(hdev);
5819}
5820#endif
5821
5822static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5823 u8 bdaddr_type, bdaddr_t *local_rpa)
5824{
5825 if (conn->out) {
5826 conn->dst_type = bdaddr_type;
5827 conn->resp_addr_type = bdaddr_type;
5828 bacpy(&conn->resp_addr, bdaddr);
5829
5830 /* Check if the controller has set a Local RPA then it must be
5831 * used instead or hdev->rpa.
5832 */
5833 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5834 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5835 bacpy(&conn->init_addr, local_rpa);
5836 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5837 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5838 bacpy(&conn->init_addr, &conn->hdev->rpa);
5839 } else {
5840 hci_copy_identity_address(conn->hdev, &conn->init_addr,
5841 &conn->init_addr_type);
5842 }
5843 } else {
5844 conn->resp_addr_type = conn->hdev->adv_addr_type;
5845 /* Check if the controller has set a Local RPA then it must be
5846 * used instead or hdev->rpa.
5847 */
5848 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5849 conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5850 bacpy(&conn->resp_addr, local_rpa);
5851 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5852 /* In case of ext adv, resp_addr will be updated in
5853 * Adv Terminated event.
5854 */
5855 if (!ext_adv_capable(conn->hdev))
5856 bacpy(&conn->resp_addr,
5857 &conn->hdev->random_addr);
5858 } else {
5859 bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5860 }
5861
5862 conn->init_addr_type = bdaddr_type;
5863 bacpy(&conn->init_addr, bdaddr);
5864
5865 /* For incoming connections, set the default minimum
5866 * and maximum connection interval. They will be used
5867 * to check if the parameters are in range and if not
5868 * trigger the connection update procedure.
5869 */
5870 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5871 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5872 }
5873}
5874
5875static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5876 bdaddr_t *bdaddr, u8 bdaddr_type,
5877 bdaddr_t *local_rpa, u8 role, u16 handle,
5878 u16 interval, u16 latency,
5879 u16 supervision_timeout)
5880{
5881 struct hci_conn_params *params;
5882 struct hci_conn *conn;
5883 struct smp_irk *irk;
5884 u8 addr_type;
5885
5886 hci_dev_lock(hdev);
5887
5888 /* All controllers implicitly stop advertising in the event of a
5889 * connection, so ensure that the state bit is cleared.
5890 */
5891 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5892
5893 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5894 if (!conn) {
5895 /* In case of error status and there is no connection pending
5896 * just unlock as there is nothing to cleanup.
5897 */
5898 if (status)
5899 goto unlock;
5900
5901 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
5902 if (!conn) {
5903 bt_dev_err(hdev, "no memory for new connection");
5904 goto unlock;
5905 }
5906
5907 conn->dst_type = bdaddr_type;
5908
5909 /* If we didn't have a hci_conn object previously
5910 * but we're in central role this must be something
5911 * initiated using an accept list. Since accept list based
5912 * connections are not "first class citizens" we don't
5913 * have full tracking of them. Therefore, we go ahead
5914 * with a "best effort" approach of determining the
5915 * initiator address based on the HCI_PRIVACY flag.
5916 */
5917 if (conn->out) {
5918 conn->resp_addr_type = bdaddr_type;
5919 bacpy(&conn->resp_addr, bdaddr);
5920 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5921 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5922 bacpy(&conn->init_addr, &hdev->rpa);
5923 } else {
5924 hci_copy_identity_address(hdev,
5925 &conn->init_addr,
5926 &conn->init_addr_type);
5927 }
5928 }
5929 } else {
5930 cancel_delayed_work(&conn->le_conn_timeout);
5931 }
5932
5933 /* The HCI_LE_Connection_Complete event is only sent once per connection.
5934 * Processing it more than once per connection can corrupt kernel memory.
5935 *
5936 * As the connection handle is set here for the first time, it indicates
5937 * whether the connection is already set up.
5938 */
5939 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5940 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5941 goto unlock;
5942 }
5943
5944 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5945
5946 /* Lookup the identity address from the stored connection
5947 * address and address type.
5948 *
5949 * When establishing connections to an identity address, the
5950 * connection procedure will store the resolvable random
5951 * address first. Now if it can be converted back into the
5952 * identity address, start using the identity address from
5953 * now on.
5954 */
5955 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5956 if (irk) {
5957 bacpy(&conn->dst, &irk->bdaddr);
5958 conn->dst_type = irk->addr_type;
5959 }
5960
5961 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5962
5963 /* All connection failure handling is taken care of by the
5964 * hci_conn_failed function which is triggered by the HCI
5965 * request completion callbacks used for connecting.
5966 */
5967 if (status || hci_conn_set_handle(conn, handle))
5968 goto unlock;
5969
5970 /* Drop the connection if it has been aborted */
5971 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5972 hci_conn_drop(conn);
5973 goto unlock;
5974 }
5975
5976 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5977 addr_type = BDADDR_LE_PUBLIC;
5978 else
5979 addr_type = BDADDR_LE_RANDOM;
5980
5981 /* Drop the connection if the device is blocked */
5982 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5983 hci_conn_drop(conn);
5984 goto unlock;
5985 }
5986
5987 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5988 mgmt_device_connected(hdev, conn, NULL, 0);
5989
5990 conn->sec_level = BT_SECURITY_LOW;
5991 conn->state = BT_CONFIG;
5992
5993 /* Store current advertising instance as connection advertising instance
5994 * when sotfware rotation is in use so it can be re-enabled when
5995 * disconnected.
5996 */
5997 if (!ext_adv_capable(hdev))
5998 conn->adv_instance = hdev->cur_adv_instance;
5999
6000 conn->le_conn_interval = interval;
6001 conn->le_conn_latency = latency;
6002 conn->le_supv_timeout = supervision_timeout;
6003
6004 hci_debugfs_create_conn(conn);
6005 hci_conn_add_sysfs(conn);
6006
6007 /* The remote features procedure is defined for central
6008 * role only. So only in case of an initiated connection
6009 * request the remote features.
6010 *
6011 * If the local controller supports peripheral-initiated features
6012 * exchange, then requesting the remote features in peripheral
6013 * role is possible. Otherwise just transition into the
6014 * connected state without requesting the remote features.
6015 */
6016 if (conn->out ||
6017 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6018 struct hci_cp_le_read_remote_features cp;
6019
6020 cp.handle = __cpu_to_le16(conn->handle);
6021
6022 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6023 sizeof(cp), &cp);
6024
6025 hci_conn_hold(conn);
6026 } else {
6027 conn->state = BT_CONNECTED;
6028 hci_connect_cfm(conn, status);
6029 }
6030
6031 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6032 conn->dst_type);
6033 if (params) {
6034 hci_pend_le_list_del_init(params);
6035 if (params->conn) {
6036 hci_conn_drop(params->conn);
6037 hci_conn_put(params->conn);
6038 params->conn = NULL;
6039 }
6040 }
6041
6042unlock:
6043 hci_update_passive_scan(hdev);
6044 hci_dev_unlock(hdev);
6045}
6046
6047static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6048 struct sk_buff *skb)
6049{
6050 struct hci_ev_le_conn_complete *ev = data;
6051
6052 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6053
6054 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6055 NULL, ev->role, le16_to_cpu(ev->handle),
6056 le16_to_cpu(ev->interval),
6057 le16_to_cpu(ev->latency),
6058 le16_to_cpu(ev->supervision_timeout));
6059}
6060
6061static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6062 struct sk_buff *skb)
6063{
6064 struct hci_ev_le_enh_conn_complete *ev = data;
6065
6066 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6067
6068 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6069 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6070 le16_to_cpu(ev->interval),
6071 le16_to_cpu(ev->latency),
6072 le16_to_cpu(ev->supervision_timeout));
6073}
6074
6075static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6076 struct sk_buff *skb)
6077{
6078 struct hci_evt_le_ext_adv_set_term *ev = data;
6079 struct hci_conn *conn;
6080 struct adv_info *adv, *n;
6081
6082 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6083
6084 /* The Bluetooth Core 5.3 specification clearly states that this event
6085 * shall not be sent when the Host disables the advertising set. So in
6086 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6087 *
6088 * When the Host disables an advertising set, all cleanup is done via
6089 * its command callback and not needed to be duplicated here.
6090 */
6091 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6092 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6093 return;
6094 }
6095
6096 hci_dev_lock(hdev);
6097
6098 adv = hci_find_adv_instance(hdev, ev->handle);
6099
6100 if (ev->status) {
6101 if (!adv)
6102 goto unlock;
6103
6104 /* Remove advertising as it has been terminated */
6105 hci_remove_adv_instance(hdev, ev->handle);
6106 mgmt_advertising_removed(NULL, hdev, ev->handle);
6107
6108 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6109 if (adv->enabled)
6110 goto unlock;
6111 }
6112
6113 /* We are no longer advertising, clear HCI_LE_ADV */
6114 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6115 goto unlock;
6116 }
6117
6118 if (adv)
6119 adv->enabled = false;
6120
6121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6122 if (conn) {
6123 /* Store handle in the connection so the correct advertising
6124 * instance can be re-enabled when disconnected.
6125 */
6126 conn->adv_instance = ev->handle;
6127
6128 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6129 bacmp(&conn->resp_addr, BDADDR_ANY))
6130 goto unlock;
6131
6132 if (!ev->handle) {
6133 bacpy(&conn->resp_addr, &hdev->random_addr);
6134 goto unlock;
6135 }
6136
6137 if (adv)
6138 bacpy(&conn->resp_addr, &adv->random_addr);
6139 }
6140
6141unlock:
6142 hci_dev_unlock(hdev);
6143}
6144
6145static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6146 struct sk_buff *skb)
6147{
6148 struct hci_ev_le_conn_update_complete *ev = data;
6149 struct hci_conn *conn;
6150
6151 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6152
6153 if (ev->status)
6154 return;
6155
6156 hci_dev_lock(hdev);
6157
6158 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6159 if (conn) {
6160 conn->le_conn_interval = le16_to_cpu(ev->interval);
6161 conn->le_conn_latency = le16_to_cpu(ev->latency);
6162 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6163 }
6164
6165 hci_dev_unlock(hdev);
6166}
6167
6168/* This function requires the caller holds hdev->lock */
6169static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6170 bdaddr_t *addr,
6171 u8 addr_type, bool addr_resolved,
6172 u8 adv_type)
6173{
6174 struct hci_conn *conn;
6175 struct hci_conn_params *params;
6176
6177 /* If the event is not connectable don't proceed further */
6178 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6179 return NULL;
6180
6181 /* Ignore if the device is blocked or hdev is suspended */
6182 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6183 hdev->suspended)
6184 return NULL;
6185
6186 /* Most controller will fail if we try to create new connections
6187 * while we have an existing one in peripheral role.
6188 */
6189 if (hdev->conn_hash.le_num_peripheral > 0 &&
6190 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6191 !(hdev->le_states[3] & 0x10)))
6192 return NULL;
6193
6194 /* If we're not connectable only connect devices that we have in
6195 * our pend_le_conns list.
6196 */
6197 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6198 addr_type);
6199 if (!params)
6200 return NULL;
6201
6202 if (!params->explicit_connect) {
6203 switch (params->auto_connect) {
6204 case HCI_AUTO_CONN_DIRECT:
6205 /* Only devices advertising with ADV_DIRECT_IND are
6206 * triggering a connection attempt. This is allowing
6207 * incoming connections from peripheral devices.
6208 */
6209 if (adv_type != LE_ADV_DIRECT_IND)
6210 return NULL;
6211 break;
6212 case HCI_AUTO_CONN_ALWAYS:
6213 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6214 * are triggering a connection attempt. This means
6215 * that incoming connections from peripheral device are
6216 * accepted and also outgoing connections to peripheral
6217 * devices are established when found.
6218 */
6219 break;
6220 default:
6221 return NULL;
6222 }
6223 }
6224
6225 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6226 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6227 HCI_ROLE_MASTER);
6228 if (!IS_ERR(conn)) {
6229 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6230 * by higher layer that tried to connect, if no then
6231 * store the pointer since we don't really have any
6232 * other owner of the object besides the params that
6233 * triggered it. This way we can abort the connection if
6234 * the parameters get removed and keep the reference
6235 * count consistent once the connection is established.
6236 */
6237
6238 if (!params->explicit_connect)
6239 params->conn = hci_conn_get(conn);
6240
6241 return conn;
6242 }
6243
6244 switch (PTR_ERR(conn)) {
6245 case -EBUSY:
6246 /* If hci_connect() returns -EBUSY it means there is already
6247 * an LE connection attempt going on. Since controllers don't
6248 * support more than one connection attempt at the time, we
6249 * don't consider this an error case.
6250 */
6251 break;
6252 default:
6253 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6254 return NULL;
6255 }
6256
6257 return NULL;
6258}
6259
6260static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6261 u8 bdaddr_type, bdaddr_t *direct_addr,
6262 u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6263 bool ext_adv, bool ctl_time, u64 instant)
6264{
6265 struct discovery_state *d = &hdev->discovery;
6266 struct smp_irk *irk;
6267 struct hci_conn *conn;
6268 bool match, bdaddr_resolved;
6269 u32 flags;
6270 u8 *ptr;
6271
6272 switch (type) {
6273 case LE_ADV_IND:
6274 case LE_ADV_DIRECT_IND:
6275 case LE_ADV_SCAN_IND:
6276 case LE_ADV_NONCONN_IND:
6277 case LE_ADV_SCAN_RSP:
6278 break;
6279 default:
6280 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6281 "type: 0x%02x", type);
6282 return;
6283 }
6284
6285 if (len > max_adv_len(hdev)) {
6286 bt_dev_err_ratelimited(hdev,
6287 "adv larger than maximum supported");
6288 return;
6289 }
6290
6291 /* Find the end of the data in case the report contains padded zero
6292 * bytes at the end causing an invalid length value.
6293 *
6294 * When data is NULL, len is 0 so there is no need for extra ptr
6295 * check as 'ptr < data + 0' is already false in such case.
6296 */
6297 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6298 if (ptr + 1 + *ptr > data + len)
6299 break;
6300 }
6301
6302 /* Adjust for actual length. This handles the case when remote
6303 * device is advertising with incorrect data length.
6304 */
6305 len = ptr - data;
6306
6307 /* If the direct address is present, then this report is from
6308 * a LE Direct Advertising Report event. In that case it is
6309 * important to see if the address is matching the local
6310 * controller address.
6311 */
6312 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6313 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6314 &bdaddr_resolved);
6315
6316 /* Only resolvable random addresses are valid for these
6317 * kind of reports and others can be ignored.
6318 */
6319 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6320 return;
6321
6322 /* If the controller is not using resolvable random
6323 * addresses, then this report can be ignored.
6324 */
6325 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6326 return;
6327
6328 /* If the local IRK of the controller does not match
6329 * with the resolvable random address provided, then
6330 * this report can be ignored.
6331 */
6332 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6333 return;
6334 }
6335
6336 /* Check if we need to convert to identity address */
6337 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6338 if (irk) {
6339 bdaddr = &irk->bdaddr;
6340 bdaddr_type = irk->addr_type;
6341 }
6342
6343 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6344
6345 /* Check if we have been requested to connect to this device.
6346 *
6347 * direct_addr is set only for directed advertising reports (it is NULL
6348 * for advertising reports) and is already verified to be RPA above.
6349 */
6350 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6351 type);
6352 if (!ext_adv && conn && type == LE_ADV_IND &&
6353 len <= max_adv_len(hdev)) {
6354 /* Store report for later inclusion by
6355 * mgmt_device_connected
6356 */
6357 memcpy(conn->le_adv_data, data, len);
6358 conn->le_adv_data_len = len;
6359 }
6360
6361 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6362 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6363 else
6364 flags = 0;
6365
6366 /* All scan results should be sent up for Mesh systems */
6367 if (hci_dev_test_flag(hdev, HCI_MESH)) {
6368 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6369 rssi, flags, data, len, NULL, 0, instant);
6370 return;
6371 }
6372
6373 /* Passive scanning shouldn't trigger any device found events,
6374 * except for devices marked as CONN_REPORT for which we do send
6375 * device found events, or advertisement monitoring requested.
6376 */
6377 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6378 if (type == LE_ADV_DIRECT_IND)
6379 return;
6380
6381 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6382 bdaddr, bdaddr_type) &&
6383 idr_is_empty(&hdev->adv_monitors_idr))
6384 return;
6385
6386 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6387 rssi, flags, data, len, NULL, 0, 0);
6388 return;
6389 }
6390
6391 /* When receiving a scan response, then there is no way to
6392 * know if the remote device is connectable or not. However
6393 * since scan responses are merged with a previously seen
6394 * advertising report, the flags field from that report
6395 * will be used.
6396 *
6397 * In the unlikely case that a controller just sends a scan
6398 * response event that doesn't match the pending report, then
6399 * it is marked as a standalone SCAN_RSP.
6400 */
6401 if (type == LE_ADV_SCAN_RSP)
6402 flags = MGMT_DEV_FOUND_SCAN_RSP;
6403
6404 /* If there's nothing pending either store the data from this
6405 * event or send an immediate device found event if the data
6406 * should not be stored for later.
6407 */
6408 if (!ext_adv && !has_pending_adv_report(hdev)) {
6409 /* If the report will trigger a SCAN_REQ store it for
6410 * later merging.
6411 */
6412 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6413 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6414 rssi, flags, data, len);
6415 return;
6416 }
6417
6418 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6419 rssi, flags, data, len, NULL, 0, 0);
6420 return;
6421 }
6422
6423 /* Check if the pending report is for the same device as the new one */
6424 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6425 bdaddr_type == d->last_adv_addr_type);
6426
6427 /* If the pending data doesn't match this report or this isn't a
6428 * scan response (e.g. we got a duplicate ADV_IND) then force
6429 * sending of the pending data.
6430 */
6431 if (type != LE_ADV_SCAN_RSP || !match) {
6432 /* Send out whatever is in the cache, but skip duplicates */
6433 if (!match)
6434 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6435 d->last_adv_addr_type, NULL,
6436 d->last_adv_rssi, d->last_adv_flags,
6437 d->last_adv_data,
6438 d->last_adv_data_len, NULL, 0, 0);
6439
6440 /* If the new report will trigger a SCAN_REQ store it for
6441 * later merging.
6442 */
6443 if (!ext_adv && (type == LE_ADV_IND ||
6444 type == LE_ADV_SCAN_IND)) {
6445 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6446 rssi, flags, data, len);
6447 return;
6448 }
6449
6450 /* The advertising reports cannot be merged, so clear
6451 * the pending report and send out a device found event.
6452 */
6453 clear_pending_adv_report(hdev);
6454 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6455 rssi, flags, data, len, NULL, 0, 0);
6456 return;
6457 }
6458
6459 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6460 * the new event is a SCAN_RSP. We can therefore proceed with
6461 * sending a merged device found event.
6462 */
6463 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6464 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6465 d->last_adv_data, d->last_adv_data_len, data, len, 0);
6466 clear_pending_adv_report(hdev);
6467}
6468
6469static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6470 struct sk_buff *skb)
6471{
6472 struct hci_ev_le_advertising_report *ev = data;
6473 u64 instant = jiffies;
6474
6475 if (!ev->num)
6476 return;
6477
6478 hci_dev_lock(hdev);
6479
6480 while (ev->num--) {
6481 struct hci_ev_le_advertising_info *info;
6482 s8 rssi;
6483
6484 info = hci_le_ev_skb_pull(hdev, skb,
6485 HCI_EV_LE_ADVERTISING_REPORT,
6486 sizeof(*info));
6487 if (!info)
6488 break;
6489
6490 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6491 info->length + 1))
6492 break;
6493
6494 if (info->length <= max_adv_len(hdev)) {
6495 rssi = info->data[info->length];
6496 process_adv_report(hdev, info->type, &info->bdaddr,
6497 info->bdaddr_type, NULL, 0, rssi,
6498 info->data, info->length, false,
6499 false, instant);
6500 } else {
6501 bt_dev_err(hdev, "Dropping invalid advertising data");
6502 }
6503 }
6504
6505 hci_dev_unlock(hdev);
6506}
6507
6508static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6509{
6510 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6511 switch (evt_type) {
6512 case LE_LEGACY_ADV_IND:
6513 return LE_ADV_IND;
6514 case LE_LEGACY_ADV_DIRECT_IND:
6515 return LE_ADV_DIRECT_IND;
6516 case LE_LEGACY_ADV_SCAN_IND:
6517 return LE_ADV_SCAN_IND;
6518 case LE_LEGACY_NONCONN_IND:
6519 return LE_ADV_NONCONN_IND;
6520 case LE_LEGACY_SCAN_RSP_ADV:
6521 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6522 return LE_ADV_SCAN_RSP;
6523 }
6524
6525 goto invalid;
6526 }
6527
6528 if (evt_type & LE_EXT_ADV_CONN_IND) {
6529 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6530 return LE_ADV_DIRECT_IND;
6531
6532 return LE_ADV_IND;
6533 }
6534
6535 if (evt_type & LE_EXT_ADV_SCAN_RSP)
6536 return LE_ADV_SCAN_RSP;
6537
6538 if (evt_type & LE_EXT_ADV_SCAN_IND)
6539 return LE_ADV_SCAN_IND;
6540
6541 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6542 evt_type & LE_EXT_ADV_DIRECT_IND)
6543 return LE_ADV_NONCONN_IND;
6544
6545invalid:
6546 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6547 evt_type);
6548
6549 return LE_ADV_INVALID;
6550}
6551
6552static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6553 struct sk_buff *skb)
6554{
6555 struct hci_ev_le_ext_adv_report *ev = data;
6556 u64 instant = jiffies;
6557
6558 if (!ev->num)
6559 return;
6560
6561 hci_dev_lock(hdev);
6562
6563 while (ev->num--) {
6564 struct hci_ev_le_ext_adv_info *info;
6565 u8 legacy_evt_type;
6566 u16 evt_type;
6567
6568 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6569 sizeof(*info));
6570 if (!info)
6571 break;
6572
6573 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6574 info->length))
6575 break;
6576
6577 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6578 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6579 if (legacy_evt_type != LE_ADV_INVALID) {
6580 process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6581 info->bdaddr_type, NULL, 0,
6582 info->rssi, info->data, info->length,
6583 !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6584 false, instant);
6585 }
6586 }
6587
6588 hci_dev_unlock(hdev);
6589}
6590
6591static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6592{
6593 struct hci_cp_le_pa_term_sync cp;
6594
6595 memset(&cp, 0, sizeof(cp));
6596 cp.handle = handle;
6597
6598 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6599}
6600
6601static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6602 struct sk_buff *skb)
6603{
6604 struct hci_ev_le_pa_sync_established *ev = data;
6605 int mask = hdev->link_mode;
6606 __u8 flags = 0;
6607 struct hci_conn *pa_sync;
6608
6609 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6610
6611 hci_dev_lock(hdev);
6612
6613 hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6614
6615 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6616 if (!(mask & HCI_LM_ACCEPT)) {
6617 hci_le_pa_term_sync(hdev, ev->handle);
6618 goto unlock;
6619 }
6620
6621 if (!(flags & HCI_PROTO_DEFER))
6622 goto unlock;
6623
6624 if (ev->status) {
6625 /* Add connection to indicate the failed PA sync event */
6626 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6627 HCI_ROLE_SLAVE);
6628
6629 if (!pa_sync)
6630 goto unlock;
6631
6632 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6633
6634 /* Notify iso layer */
6635 hci_connect_cfm(pa_sync, ev->status);
6636 }
6637
6638unlock:
6639 hci_dev_unlock(hdev);
6640}
6641
6642static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6643 struct sk_buff *skb)
6644{
6645 struct hci_ev_le_per_adv_report *ev = data;
6646 int mask = hdev->link_mode;
6647 __u8 flags = 0;
6648
6649 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6650
6651 hci_dev_lock(hdev);
6652
6653 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6654 if (!(mask & HCI_LM_ACCEPT))
6655 hci_le_pa_term_sync(hdev, ev->sync_handle);
6656
6657 hci_dev_unlock(hdev);
6658}
6659
6660static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6661 struct sk_buff *skb)
6662{
6663 struct hci_ev_le_remote_feat_complete *ev = data;
6664 struct hci_conn *conn;
6665
6666 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6667
6668 hci_dev_lock(hdev);
6669
6670 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6671 if (conn) {
6672 if (!ev->status)
6673 memcpy(conn->features[0], ev->features, 8);
6674
6675 if (conn->state == BT_CONFIG) {
6676 __u8 status;
6677
6678 /* If the local controller supports peripheral-initiated
6679 * features exchange, but the remote controller does
6680 * not, then it is possible that the error code 0x1a
6681 * for unsupported remote feature gets returned.
6682 *
6683 * In this specific case, allow the connection to
6684 * transition into connected state and mark it as
6685 * successful.
6686 */
6687 if (!conn->out && ev->status == 0x1a &&
6688 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6689 status = 0x00;
6690 else
6691 status = ev->status;
6692
6693 conn->state = BT_CONNECTED;
6694 hci_connect_cfm(conn, status);
6695 hci_conn_drop(conn);
6696 }
6697 }
6698
6699 hci_dev_unlock(hdev);
6700}
6701
6702static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6703 struct sk_buff *skb)
6704{
6705 struct hci_ev_le_ltk_req *ev = data;
6706 struct hci_cp_le_ltk_reply cp;
6707 struct hci_cp_le_ltk_neg_reply neg;
6708 struct hci_conn *conn;
6709 struct smp_ltk *ltk;
6710
6711 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6712
6713 hci_dev_lock(hdev);
6714
6715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6716 if (conn == NULL)
6717 goto not_found;
6718
6719 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6720 if (!ltk)
6721 goto not_found;
6722
6723 if (smp_ltk_is_sc(ltk)) {
6724 /* With SC both EDiv and Rand are set to zero */
6725 if (ev->ediv || ev->rand)
6726 goto not_found;
6727 } else {
6728 /* For non-SC keys check that EDiv and Rand match */
6729 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6730 goto not_found;
6731 }
6732
6733 memcpy(cp.ltk, ltk->val, ltk->enc_size);
6734 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6735 cp.handle = cpu_to_le16(conn->handle);
6736
6737 conn->pending_sec_level = smp_ltk_sec_level(ltk);
6738
6739 conn->enc_key_size = ltk->enc_size;
6740
6741 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6742
6743 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6744 * temporary key used to encrypt a connection following
6745 * pairing. It is used during the Encrypted Session Setup to
6746 * distribute the keys. Later, security can be re-established
6747 * using a distributed LTK.
6748 */
6749 if (ltk->type == SMP_STK) {
6750 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6751 list_del_rcu(<k->list);
6752 kfree_rcu(ltk, rcu);
6753 } else {
6754 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6755 }
6756
6757 hci_dev_unlock(hdev);
6758
6759 return;
6760
6761not_found:
6762 neg.handle = ev->handle;
6763 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6764 hci_dev_unlock(hdev);
6765}
6766
6767static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6768 u8 reason)
6769{
6770 struct hci_cp_le_conn_param_req_neg_reply cp;
6771
6772 cp.handle = cpu_to_le16(handle);
6773 cp.reason = reason;
6774
6775 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6776 &cp);
6777}
6778
6779static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6780 struct sk_buff *skb)
6781{
6782 struct hci_ev_le_remote_conn_param_req *ev = data;
6783 struct hci_cp_le_conn_param_req_reply cp;
6784 struct hci_conn *hcon;
6785 u16 handle, min, max, latency, timeout;
6786
6787 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6788
6789 handle = le16_to_cpu(ev->handle);
6790 min = le16_to_cpu(ev->interval_min);
6791 max = le16_to_cpu(ev->interval_max);
6792 latency = le16_to_cpu(ev->latency);
6793 timeout = le16_to_cpu(ev->timeout);
6794
6795 hcon = hci_conn_hash_lookup_handle(hdev, handle);
6796 if (!hcon || hcon->state != BT_CONNECTED)
6797 return send_conn_param_neg_reply(hdev, handle,
6798 HCI_ERROR_UNKNOWN_CONN_ID);
6799
6800 if (max > hcon->le_conn_max_interval)
6801 return send_conn_param_neg_reply(hdev, handle,
6802 HCI_ERROR_INVALID_LL_PARAMS);
6803
6804 if (hci_check_conn_params(min, max, latency, timeout))
6805 return send_conn_param_neg_reply(hdev, handle,
6806 HCI_ERROR_INVALID_LL_PARAMS);
6807
6808 if (hcon->role == HCI_ROLE_MASTER) {
6809 struct hci_conn_params *params;
6810 u8 store_hint;
6811
6812 hci_dev_lock(hdev);
6813
6814 params = hci_conn_params_lookup(hdev, &hcon->dst,
6815 hcon->dst_type);
6816 if (params) {
6817 params->conn_min_interval = min;
6818 params->conn_max_interval = max;
6819 params->conn_latency = latency;
6820 params->supervision_timeout = timeout;
6821 store_hint = 0x01;
6822 } else {
6823 store_hint = 0x00;
6824 }
6825
6826 hci_dev_unlock(hdev);
6827
6828 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6829 store_hint, min, max, latency, timeout);
6830 }
6831
6832 cp.handle = ev->handle;
6833 cp.interval_min = ev->interval_min;
6834 cp.interval_max = ev->interval_max;
6835 cp.latency = ev->latency;
6836 cp.timeout = ev->timeout;
6837 cp.min_ce_len = 0;
6838 cp.max_ce_len = 0;
6839
6840 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6841}
6842
6843static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6844 struct sk_buff *skb)
6845{
6846 struct hci_ev_le_direct_adv_report *ev = data;
6847 u64 instant = jiffies;
6848 int i;
6849
6850 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6851 flex_array_size(ev, info, ev->num)))
6852 return;
6853
6854 if (!ev->num)
6855 return;
6856
6857 hci_dev_lock(hdev);
6858
6859 for (i = 0; i < ev->num; i++) {
6860 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6861
6862 process_adv_report(hdev, info->type, &info->bdaddr,
6863 info->bdaddr_type, &info->direct_addr,
6864 info->direct_addr_type, info->rssi, NULL, 0,
6865 false, false, instant);
6866 }
6867
6868 hci_dev_unlock(hdev);
6869}
6870
6871static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6872 struct sk_buff *skb)
6873{
6874 struct hci_ev_le_phy_update_complete *ev = data;
6875 struct hci_conn *conn;
6876
6877 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6878
6879 if (ev->status)
6880 return;
6881
6882 hci_dev_lock(hdev);
6883
6884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6885 if (!conn)
6886 goto unlock;
6887
6888 conn->le_tx_phy = ev->tx_phy;
6889 conn->le_rx_phy = ev->rx_phy;
6890
6891unlock:
6892 hci_dev_unlock(hdev);
6893}
6894
6895static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6896 struct sk_buff *skb)
6897{
6898 struct hci_evt_le_cis_established *ev = data;
6899 struct hci_conn *conn;
6900 struct bt_iso_qos *qos;
6901 bool pending = false;
6902 u16 handle = __le16_to_cpu(ev->handle);
6903
6904 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6905
6906 hci_dev_lock(hdev);
6907
6908 conn = hci_conn_hash_lookup_handle(hdev, handle);
6909 if (!conn) {
6910 bt_dev_err(hdev,
6911 "Unable to find connection with handle 0x%4.4x",
6912 handle);
6913 goto unlock;
6914 }
6915
6916 if (conn->type != ISO_LINK) {
6917 bt_dev_err(hdev,
6918 "Invalid connection link type handle 0x%4.4x",
6919 handle);
6920 goto unlock;
6921 }
6922
6923 qos = &conn->iso_qos;
6924
6925 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
6926
6927 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
6928 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
6929 qos->ucast.out.interval = qos->ucast.in.interval;
6930
6931 switch (conn->role) {
6932 case HCI_ROLE_SLAVE:
6933 /* Convert Transport Latency (us) to Latency (msec) */
6934 qos->ucast.in.latency =
6935 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6936 1000);
6937 qos->ucast.out.latency =
6938 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6939 1000);
6940 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6941 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6942 qos->ucast.in.phy = ev->c_phy;
6943 qos->ucast.out.phy = ev->p_phy;
6944 break;
6945 case HCI_ROLE_MASTER:
6946 /* Convert Transport Latency (us) to Latency (msec) */
6947 qos->ucast.out.latency =
6948 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6949 1000);
6950 qos->ucast.in.latency =
6951 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6952 1000);
6953 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6954 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6955 qos->ucast.out.phy = ev->c_phy;
6956 qos->ucast.in.phy = ev->p_phy;
6957 break;
6958 }
6959
6960 if (!ev->status) {
6961 conn->state = BT_CONNECTED;
6962 hci_debugfs_create_conn(conn);
6963 hci_conn_add_sysfs(conn);
6964 hci_iso_setup_path(conn);
6965 goto unlock;
6966 }
6967
6968 conn->state = BT_CLOSED;
6969 hci_connect_cfm(conn, ev->status);
6970 hci_conn_del(conn);
6971
6972unlock:
6973 if (pending)
6974 hci_le_create_cis_pending(hdev);
6975
6976 hci_dev_unlock(hdev);
6977}
6978
6979static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6980{
6981 struct hci_cp_le_reject_cis cp;
6982
6983 memset(&cp, 0, sizeof(cp));
6984 cp.handle = handle;
6985 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6986 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6987}
6988
6989static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6990{
6991 struct hci_cp_le_accept_cis cp;
6992
6993 memset(&cp, 0, sizeof(cp));
6994 cp.handle = handle;
6995 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6996}
6997
6998static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6999 struct sk_buff *skb)
7000{
7001 struct hci_evt_le_cis_req *ev = data;
7002 u16 acl_handle, cis_handle;
7003 struct hci_conn *acl, *cis;
7004 int mask;
7005 __u8 flags = 0;
7006
7007 acl_handle = __le16_to_cpu(ev->acl_handle);
7008 cis_handle = __le16_to_cpu(ev->cis_handle);
7009
7010 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7011 acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7012
7013 hci_dev_lock(hdev);
7014
7015 acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7016 if (!acl)
7017 goto unlock;
7018
7019 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7020 if (!(mask & HCI_LM_ACCEPT)) {
7021 hci_le_reject_cis(hdev, ev->cis_handle);
7022 goto unlock;
7023 }
7024
7025 cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7026 if (!cis) {
7027 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7028 cis_handle);
7029 if (!cis) {
7030 hci_le_reject_cis(hdev, ev->cis_handle);
7031 goto unlock;
7032 }
7033 }
7034
7035 cis->iso_qos.ucast.cig = ev->cig_id;
7036 cis->iso_qos.ucast.cis = ev->cis_id;
7037
7038 if (!(flags & HCI_PROTO_DEFER)) {
7039 hci_le_accept_cis(hdev, ev->cis_handle);
7040 } else {
7041 cis->state = BT_CONNECT2;
7042 hci_connect_cfm(cis, 0);
7043 }
7044
7045unlock:
7046 hci_dev_unlock(hdev);
7047}
7048
7049static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7050{
7051 u8 handle = PTR_UINT(data);
7052
7053 return hci_le_terminate_big_sync(hdev, handle,
7054 HCI_ERROR_LOCAL_HOST_TERM);
7055}
7056
7057static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7058 struct sk_buff *skb)
7059{
7060 struct hci_evt_le_create_big_complete *ev = data;
7061 struct hci_conn *conn;
7062 __u8 i = 0;
7063
7064 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7065
7066 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7067 flex_array_size(ev, bis_handle, ev->num_bis)))
7068 return;
7069
7070 hci_dev_lock(hdev);
7071 rcu_read_lock();
7072
7073 /* Connect all BISes that are bound to the BIG */
7074 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7075 if (bacmp(&conn->dst, BDADDR_ANY) ||
7076 conn->type != ISO_LINK ||
7077 conn->iso_qos.bcast.big != ev->handle)
7078 continue;
7079
7080 if (hci_conn_set_handle(conn,
7081 __le16_to_cpu(ev->bis_handle[i++])))
7082 continue;
7083
7084 if (!ev->status) {
7085 conn->state = BT_CONNECTED;
7086 set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7087 rcu_read_unlock();
7088 hci_debugfs_create_conn(conn);
7089 hci_conn_add_sysfs(conn);
7090 hci_iso_setup_path(conn);
7091 rcu_read_lock();
7092 continue;
7093 }
7094
7095 hci_connect_cfm(conn, ev->status);
7096 rcu_read_unlock();
7097 hci_conn_del(conn);
7098 rcu_read_lock();
7099 }
7100
7101 rcu_read_unlock();
7102
7103 if (!ev->status && !i)
7104 /* If no BISes have been connected for the BIG,
7105 * terminate. This is in case all bound connections
7106 * have been closed before the BIG creation
7107 * has completed.
7108 */
7109 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7110 UINT_PTR(ev->handle), NULL);
7111
7112 hci_dev_unlock(hdev);
7113}
7114
7115static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7116 struct sk_buff *skb)
7117{
7118 struct hci_evt_le_big_sync_estabilished *ev = data;
7119 struct hci_conn *bis;
7120 int i;
7121
7122 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7123
7124 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7125 flex_array_size(ev, bis, ev->num_bis)))
7126 return;
7127
7128 hci_dev_lock(hdev);
7129
7130 for (i = 0; i < ev->num_bis; i++) {
7131 u16 handle = le16_to_cpu(ev->bis[i]);
7132 __le32 interval;
7133
7134 bis = hci_conn_hash_lookup_handle(hdev, handle);
7135 if (!bis) {
7136 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7137 HCI_ROLE_SLAVE, handle);
7138 if (!bis)
7139 continue;
7140 }
7141
7142 if (ev->status != 0x42)
7143 /* Mark PA sync as established */
7144 set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7145
7146 bis->iso_qos.bcast.big = ev->handle;
7147 memset(&interval, 0, sizeof(interval));
7148 memcpy(&interval, ev->latency, sizeof(ev->latency));
7149 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7150 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7151 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7152 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7153
7154 if (!ev->status) {
7155 set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7156 hci_iso_setup_path(bis);
7157 }
7158 }
7159
7160 /* In case BIG sync failed, notify each failed connection to
7161 * the user after all hci connections have been added
7162 */
7163 if (ev->status)
7164 for (i = 0; i < ev->num_bis; i++) {
7165 u16 handle = le16_to_cpu(ev->bis[i]);
7166
7167 bis = hci_conn_hash_lookup_handle(hdev, handle);
7168
7169 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7170 hci_connect_cfm(bis, ev->status);
7171 }
7172
7173 hci_dev_unlock(hdev);
7174}
7175
7176static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7177 struct sk_buff *skb)
7178{
7179 struct hci_evt_le_big_info_adv_report *ev = data;
7180 int mask = hdev->link_mode;
7181 __u8 flags = 0;
7182 struct hci_conn *pa_sync;
7183
7184 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7185
7186 hci_dev_lock(hdev);
7187
7188 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7189 if (!(mask & HCI_LM_ACCEPT)) {
7190 hci_le_pa_term_sync(hdev, ev->sync_handle);
7191 goto unlock;
7192 }
7193
7194 if (!(flags & HCI_PROTO_DEFER))
7195 goto unlock;
7196
7197 pa_sync = hci_conn_hash_lookup_pa_sync_handle
7198 (hdev,
7199 le16_to_cpu(ev->sync_handle));
7200
7201 if (pa_sync)
7202 goto unlock;
7203
7204 /* Add connection to indicate the PA sync event */
7205 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7206 HCI_ROLE_SLAVE);
7207
7208 if (!pa_sync)
7209 goto unlock;
7210
7211 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7212 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7213
7214 /* Notify iso layer */
7215 hci_connect_cfm(pa_sync, 0x00);
7216
7217unlock:
7218 hci_dev_unlock(hdev);
7219}
7220
7221#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7222[_op] = { \
7223 .func = _func, \
7224 .min_len = _min_len, \
7225 .max_len = _max_len, \
7226}
7227
7228#define HCI_LE_EV(_op, _func, _len) \
7229 HCI_LE_EV_VL(_op, _func, _len, _len)
7230
7231#define HCI_LE_EV_STATUS(_op, _func) \
7232 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7233
7234/* Entries in this table shall have their position according to the subevent
7235 * opcode they handle so the use of the macros above is recommend since it does
7236 * attempt to initialize at its proper index using Designated Initializers that
7237 * way events without a callback function can be ommited.
7238 */
7239static const struct hci_le_ev {
7240 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7241 u16 min_len;
7242 u16 max_len;
7243} hci_le_ev_table[U8_MAX + 1] = {
7244 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7245 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7246 sizeof(struct hci_ev_le_conn_complete)),
7247 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7248 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7249 sizeof(struct hci_ev_le_advertising_report),
7250 HCI_MAX_EVENT_SIZE),
7251 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7252 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7253 hci_le_conn_update_complete_evt,
7254 sizeof(struct hci_ev_le_conn_update_complete)),
7255 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7256 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7257 hci_le_remote_feat_complete_evt,
7258 sizeof(struct hci_ev_le_remote_feat_complete)),
7259 /* [0x05 = HCI_EV_LE_LTK_REQ] */
7260 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7261 sizeof(struct hci_ev_le_ltk_req)),
7262 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7263 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7264 hci_le_remote_conn_param_req_evt,
7265 sizeof(struct hci_ev_le_remote_conn_param_req)),
7266 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7267 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7268 hci_le_enh_conn_complete_evt,
7269 sizeof(struct hci_ev_le_enh_conn_complete)),
7270 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7271 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7272 sizeof(struct hci_ev_le_direct_adv_report),
7273 HCI_MAX_EVENT_SIZE),
7274 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7275 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7276 sizeof(struct hci_ev_le_phy_update_complete)),
7277 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7278 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7279 sizeof(struct hci_ev_le_ext_adv_report),
7280 HCI_MAX_EVENT_SIZE),
7281 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7282 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7283 hci_le_pa_sync_estabilished_evt,
7284 sizeof(struct hci_ev_le_pa_sync_established)),
7285 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7286 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7287 hci_le_per_adv_report_evt,
7288 sizeof(struct hci_ev_le_per_adv_report),
7289 HCI_MAX_EVENT_SIZE),
7290 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7291 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7292 sizeof(struct hci_evt_le_ext_adv_set_term)),
7293 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7294 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7295 sizeof(struct hci_evt_le_cis_established)),
7296 /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7297 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7298 sizeof(struct hci_evt_le_cis_req)),
7299 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7300 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7301 hci_le_create_big_complete_evt,
7302 sizeof(struct hci_evt_le_create_big_complete),
7303 HCI_MAX_EVENT_SIZE),
7304 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7305 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7306 hci_le_big_sync_established_evt,
7307 sizeof(struct hci_evt_le_big_sync_estabilished),
7308 HCI_MAX_EVENT_SIZE),
7309 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7310 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7311 hci_le_big_info_adv_report_evt,
7312 sizeof(struct hci_evt_le_big_info_adv_report),
7313 HCI_MAX_EVENT_SIZE),
7314};
7315
7316static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7317 struct sk_buff *skb, u16 *opcode, u8 *status,
7318 hci_req_complete_t *req_complete,
7319 hci_req_complete_skb_t *req_complete_skb)
7320{
7321 struct hci_ev_le_meta *ev = data;
7322 const struct hci_le_ev *subev;
7323
7324 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7325
7326 /* Only match event if command OGF is for LE */
7327 if (hdev->sent_cmd &&
7328 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7329 hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7330 *opcode = hci_skb_opcode(hdev->sent_cmd);
7331 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7332 req_complete_skb);
7333 }
7334
7335 subev = &hci_le_ev_table[ev->subevent];
7336 if (!subev->func)
7337 return;
7338
7339 if (skb->len < subev->min_len) {
7340 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7341 ev->subevent, skb->len, subev->min_len);
7342 return;
7343 }
7344
7345 /* Just warn if the length is over max_len size it still be
7346 * possible to partially parse the event so leave to callback to
7347 * decide if that is acceptable.
7348 */
7349 if (skb->len > subev->max_len)
7350 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7351 ev->subevent, skb->len, subev->max_len);
7352 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7353 if (!data)
7354 return;
7355
7356 subev->func(hdev, data, skb);
7357}
7358
7359static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7360 u8 event, struct sk_buff *skb)
7361{
7362 struct hci_ev_cmd_complete *ev;
7363 struct hci_event_hdr *hdr;
7364
7365 if (!skb)
7366 return false;
7367
7368 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7369 if (!hdr)
7370 return false;
7371
7372 if (event) {
7373 if (hdr->evt != event)
7374 return false;
7375 return true;
7376 }
7377
7378 /* Check if request ended in Command Status - no way to retrieve
7379 * any extra parameters in this case.
7380 */
7381 if (hdr->evt == HCI_EV_CMD_STATUS)
7382 return false;
7383
7384 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7385 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7386 hdr->evt);
7387 return false;
7388 }
7389
7390 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7391 if (!ev)
7392 return false;
7393
7394 if (opcode != __le16_to_cpu(ev->opcode)) {
7395 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7396 __le16_to_cpu(ev->opcode));
7397 return false;
7398 }
7399
7400 return true;
7401}
7402
7403static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7404 struct sk_buff *skb)
7405{
7406 struct hci_ev_le_advertising_info *adv;
7407 struct hci_ev_le_direct_adv_info *direct_adv;
7408 struct hci_ev_le_ext_adv_info *ext_adv;
7409 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7410 const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7411
7412 hci_dev_lock(hdev);
7413
7414 /* If we are currently suspended and this is the first BT event seen,
7415 * save the wake reason associated with the event.
7416 */
7417 if (!hdev->suspended || hdev->wake_reason)
7418 goto unlock;
7419
7420 /* Default to remote wake. Values for wake_reason are documented in the
7421 * Bluez mgmt api docs.
7422 */
7423 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7424
7425 /* Once configured for remote wakeup, we should only wake up for
7426 * reconnections. It's useful to see which device is waking us up so
7427 * keep track of the bdaddr of the connection event that woke us up.
7428 */
7429 if (event == HCI_EV_CONN_REQUEST) {
7430 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7431 hdev->wake_addr_type = BDADDR_BREDR;
7432 } else if (event == HCI_EV_CONN_COMPLETE) {
7433 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7434 hdev->wake_addr_type = BDADDR_BREDR;
7435 } else if (event == HCI_EV_LE_META) {
7436 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7437 u8 subevent = le_ev->subevent;
7438 u8 *ptr = &skb->data[sizeof(*le_ev)];
7439 u8 num_reports = *ptr;
7440
7441 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7442 subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7443 subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7444 num_reports) {
7445 adv = (void *)(ptr + 1);
7446 direct_adv = (void *)(ptr + 1);
7447 ext_adv = (void *)(ptr + 1);
7448
7449 switch (subevent) {
7450 case HCI_EV_LE_ADVERTISING_REPORT:
7451 bacpy(&hdev->wake_addr, &adv->bdaddr);
7452 hdev->wake_addr_type = adv->bdaddr_type;
7453 break;
7454 case HCI_EV_LE_DIRECT_ADV_REPORT:
7455 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7456 hdev->wake_addr_type = direct_adv->bdaddr_type;
7457 break;
7458 case HCI_EV_LE_EXT_ADV_REPORT:
7459 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7460 hdev->wake_addr_type = ext_adv->bdaddr_type;
7461 break;
7462 }
7463 }
7464 } else {
7465 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7466 }
7467
7468unlock:
7469 hci_dev_unlock(hdev);
7470}
7471
7472#define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7473[_op] = { \
7474 .req = false, \
7475 .func = _func, \
7476 .min_len = _min_len, \
7477 .max_len = _max_len, \
7478}
7479
7480#define HCI_EV(_op, _func, _len) \
7481 HCI_EV_VL(_op, _func, _len, _len)
7482
7483#define HCI_EV_STATUS(_op, _func) \
7484 HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7485
7486#define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7487[_op] = { \
7488 .req = true, \
7489 .func_req = _func, \
7490 .min_len = _min_len, \
7491 .max_len = _max_len, \
7492}
7493
7494#define HCI_EV_REQ(_op, _func, _len) \
7495 HCI_EV_REQ_VL(_op, _func, _len, _len)
7496
7497/* Entries in this table shall have their position according to the event opcode
7498 * they handle so the use of the macros above is recommend since it does attempt
7499 * to initialize at its proper index using Designated Initializers that way
7500 * events without a callback function don't have entered.
7501 */
7502static const struct hci_ev {
7503 bool req;
7504 union {
7505 void (*func)(struct hci_dev *hdev, void *data,
7506 struct sk_buff *skb);
7507 void (*func_req)(struct hci_dev *hdev, void *data,
7508 struct sk_buff *skb, u16 *opcode, u8 *status,
7509 hci_req_complete_t *req_complete,
7510 hci_req_complete_skb_t *req_complete_skb);
7511 };
7512 u16 min_len;
7513 u16 max_len;
7514} hci_ev_table[U8_MAX + 1] = {
7515 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7516 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7517 /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7518 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7519 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7520 /* [0x03 = HCI_EV_CONN_COMPLETE] */
7521 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7522 sizeof(struct hci_ev_conn_complete)),
7523 /* [0x04 = HCI_EV_CONN_REQUEST] */
7524 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7525 sizeof(struct hci_ev_conn_request)),
7526 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7527 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7528 sizeof(struct hci_ev_disconn_complete)),
7529 /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7530 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7531 sizeof(struct hci_ev_auth_complete)),
7532 /* [0x07 = HCI_EV_REMOTE_NAME] */
7533 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7534 sizeof(struct hci_ev_remote_name)),
7535 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7536 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7537 sizeof(struct hci_ev_encrypt_change)),
7538 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7539 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7540 hci_change_link_key_complete_evt,
7541 sizeof(struct hci_ev_change_link_key_complete)),
7542 /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7543 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7544 sizeof(struct hci_ev_remote_features)),
7545 /* [0x0e = HCI_EV_CMD_COMPLETE] */
7546 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7547 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7548 /* [0x0f = HCI_EV_CMD_STATUS] */
7549 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7550 sizeof(struct hci_ev_cmd_status)),
7551 /* [0x10 = HCI_EV_CMD_STATUS] */
7552 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7553 sizeof(struct hci_ev_hardware_error)),
7554 /* [0x12 = HCI_EV_ROLE_CHANGE] */
7555 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7556 sizeof(struct hci_ev_role_change)),
7557 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7558 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7559 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7560 /* [0x14 = HCI_EV_MODE_CHANGE] */
7561 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7562 sizeof(struct hci_ev_mode_change)),
7563 /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7564 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7565 sizeof(struct hci_ev_pin_code_req)),
7566 /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7567 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7568 sizeof(struct hci_ev_link_key_req)),
7569 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7570 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7571 sizeof(struct hci_ev_link_key_notify)),
7572 /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7573 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7574 sizeof(struct hci_ev_clock_offset)),
7575 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7576 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7577 sizeof(struct hci_ev_pkt_type_change)),
7578 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7579 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7580 sizeof(struct hci_ev_pscan_rep_mode)),
7581 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7582 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7583 hci_inquiry_result_with_rssi_evt,
7584 sizeof(struct hci_ev_inquiry_result_rssi),
7585 HCI_MAX_EVENT_SIZE),
7586 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7587 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7588 sizeof(struct hci_ev_remote_ext_features)),
7589 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7590 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7591 sizeof(struct hci_ev_sync_conn_complete)),
7592 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7593 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7594 hci_extended_inquiry_result_evt,
7595 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7596 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7597 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7598 sizeof(struct hci_ev_key_refresh_complete)),
7599 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7600 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7601 sizeof(struct hci_ev_io_capa_request)),
7602 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7603 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7604 sizeof(struct hci_ev_io_capa_reply)),
7605 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7606 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7607 sizeof(struct hci_ev_user_confirm_req)),
7608 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7609 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7610 sizeof(struct hci_ev_user_passkey_req)),
7611 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7612 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7613 sizeof(struct hci_ev_remote_oob_data_request)),
7614 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7615 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7616 sizeof(struct hci_ev_simple_pair_complete)),
7617 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7618 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7619 sizeof(struct hci_ev_user_passkey_notify)),
7620 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7621 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7622 sizeof(struct hci_ev_keypress_notify)),
7623 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7624 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7625 sizeof(struct hci_ev_remote_host_features)),
7626 /* [0x3e = HCI_EV_LE_META] */
7627 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7628 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7629#if IS_ENABLED(CONFIG_BT_HS)
7630 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7631 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7632 sizeof(struct hci_ev_phy_link_complete)),
7633 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7634 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7635 sizeof(struct hci_ev_channel_selected)),
7636 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7637 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7638 hci_disconn_loglink_complete_evt,
7639 sizeof(struct hci_ev_disconn_logical_link_complete)),
7640 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7641 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7642 sizeof(struct hci_ev_logical_link_complete)),
7643 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7644 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7645 hci_disconn_phylink_complete_evt,
7646 sizeof(struct hci_ev_disconn_phy_link_complete)),
7647#endif
7648 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7649 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7650 sizeof(struct hci_ev_num_comp_blocks)),
7651 /* [0xff = HCI_EV_VENDOR] */
7652 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7653};
7654
7655static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7656 u16 *opcode, u8 *status,
7657 hci_req_complete_t *req_complete,
7658 hci_req_complete_skb_t *req_complete_skb)
7659{
7660 const struct hci_ev *ev = &hci_ev_table[event];
7661 void *data;
7662
7663 if (!ev->func)
7664 return;
7665
7666 if (skb->len < ev->min_len) {
7667 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7668 event, skb->len, ev->min_len);
7669 return;
7670 }
7671
7672 /* Just warn if the length is over max_len size it still be
7673 * possible to partially parse the event so leave to callback to
7674 * decide if that is acceptable.
7675 */
7676 if (skb->len > ev->max_len)
7677 bt_dev_warn_ratelimited(hdev,
7678 "unexpected event 0x%2.2x length: %u > %u",
7679 event, skb->len, ev->max_len);
7680
7681 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7682 if (!data)
7683 return;
7684
7685 if (ev->req)
7686 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7687 req_complete_skb);
7688 else
7689 ev->func(hdev, data, skb);
7690}
7691
7692void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7693{
7694 struct hci_event_hdr *hdr = (void *) skb->data;
7695 hci_req_complete_t req_complete = NULL;
7696 hci_req_complete_skb_t req_complete_skb = NULL;
7697 struct sk_buff *orig_skb = NULL;
7698 u8 status = 0, event, req_evt = 0;
7699 u16 opcode = HCI_OP_NOP;
7700
7701 if (skb->len < sizeof(*hdr)) {
7702 bt_dev_err(hdev, "Malformed HCI Event");
7703 goto done;
7704 }
7705
7706 kfree_skb(hdev->recv_event);
7707 hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7708
7709 event = hdr->evt;
7710 if (!event) {
7711 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7712 event);
7713 goto done;
7714 }
7715
7716 /* Only match event if command OGF is not for LE */
7717 if (hdev->sent_cmd &&
7718 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7719 hci_skb_event(hdev->sent_cmd) == event) {
7720 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7721 status, &req_complete, &req_complete_skb);
7722 req_evt = event;
7723 }
7724
7725 /* If it looks like we might end up having to call
7726 * req_complete_skb, store a pristine copy of the skb since the
7727 * various handlers may modify the original one through
7728 * skb_pull() calls, etc.
7729 */
7730 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7731 event == HCI_EV_CMD_COMPLETE)
7732 orig_skb = skb_clone(skb, GFP_KERNEL);
7733
7734 skb_pull(skb, HCI_EVENT_HDR_SIZE);
7735
7736 /* Store wake reason if we're suspended */
7737 hci_store_wake_reason(hdev, event, skb);
7738
7739 bt_dev_dbg(hdev, "event 0x%2.2x", event);
7740
7741 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7742 &req_complete_skb);
7743
7744 if (req_complete) {
7745 req_complete(hdev, status, opcode);
7746 } else if (req_complete_skb) {
7747 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7748 kfree_skb(orig_skb);
7749 orig_skb = NULL;
7750 }
7751 req_complete_skb(hdev, status, opcode, orig_skb);
7752 }
7753
7754done:
7755 kfree_skb(orig_skb);
7756 kfree_skb(skb);
7757 hdev->stat.evt_rx++;
7758}
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023-2024 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 <linux/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_debugfs.h"
37#include "hci_codec.h"
38#include "smp.h"
39#include "msft.h"
40#include "eir.h"
41
42#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
43 "\x00\x00\x00\x00\x00\x00\x00\x00"
44
45/* Handle HCI Event packets */
46
47static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
48 u8 ev, size_t len)
49{
50 void *data;
51
52 data = skb_pull_data(skb, len);
53 if (!data)
54 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
55
56 return data;
57}
58
59static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
60 u16 op, size_t len)
61{
62 void *data;
63
64 data = skb_pull_data(skb, len);
65 if (!data)
66 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
67
68 return data;
69}
70
71static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
72 u8 ev, size_t len)
73{
74 void *data;
75
76 data = skb_pull_data(skb, len);
77 if (!data)
78 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
79
80 return data;
81}
82
83static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
84 struct sk_buff *skb)
85{
86 struct hci_ev_status *rp = data;
87
88 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
89
90 /* It is possible that we receive Inquiry Complete event right
91 * before we receive Inquiry Cancel Command Complete event, in
92 * which case the latter event should have status of Command
93 * Disallowed. This should not be treated as error, since
94 * we actually achieve what Inquiry Cancel wants to achieve,
95 * which is to end the last Inquiry session.
96 */
97 if (rp->status == HCI_ERROR_COMMAND_DISALLOWED && !test_bit(HCI_INQUIRY, &hdev->flags)) {
98 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
99 rp->status = 0x00;
100 }
101
102 if (rp->status)
103 return rp->status;
104
105 clear_bit(HCI_INQUIRY, &hdev->flags);
106 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
107 wake_up_bit(&hdev->flags, HCI_INQUIRY);
108
109 hci_dev_lock(hdev);
110 /* Set discovery state to stopped if we're not doing LE active
111 * scanning.
112 */
113 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
114 hdev->le_scan_type != LE_SCAN_ACTIVE)
115 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
116 hci_dev_unlock(hdev);
117
118 return rp->status;
119}
120
121static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
122 struct sk_buff *skb)
123{
124 struct hci_ev_status *rp = data;
125
126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
127
128 if (rp->status)
129 return rp->status;
130
131 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
132
133 return rp->status;
134}
135
136static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
137 struct sk_buff *skb)
138{
139 struct hci_ev_status *rp = data;
140
141 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
142
143 if (rp->status)
144 return rp->status;
145
146 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
147
148 return rp->status;
149}
150
151static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
152 struct sk_buff *skb)
153{
154 struct hci_ev_status *rp = data;
155
156 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
157
158 return rp->status;
159}
160
161static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
162 struct sk_buff *skb)
163{
164 struct hci_rp_role_discovery *rp = data;
165 struct hci_conn *conn;
166
167 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
168
169 if (rp->status)
170 return rp->status;
171
172 hci_dev_lock(hdev);
173
174 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
175 if (conn)
176 conn->role = rp->role;
177
178 hci_dev_unlock(hdev);
179
180 return rp->status;
181}
182
183static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
184 struct sk_buff *skb)
185{
186 struct hci_rp_read_link_policy *rp = data;
187 struct hci_conn *conn;
188
189 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
190
191 if (rp->status)
192 return rp->status;
193
194 hci_dev_lock(hdev);
195
196 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
197 if (conn)
198 conn->link_policy = __le16_to_cpu(rp->policy);
199
200 hci_dev_unlock(hdev);
201
202 return rp->status;
203}
204
205static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
206 struct sk_buff *skb)
207{
208 struct hci_rp_write_link_policy *rp = data;
209 struct hci_conn *conn;
210 void *sent;
211
212 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
213
214 if (rp->status)
215 return rp->status;
216
217 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
218 if (!sent)
219 return rp->status;
220
221 hci_dev_lock(hdev);
222
223 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
224 if (conn)
225 conn->link_policy = get_unaligned_le16(sent + 2);
226
227 hci_dev_unlock(hdev);
228
229 return rp->status;
230}
231
232static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
233 struct sk_buff *skb)
234{
235 struct hci_rp_read_def_link_policy *rp = data;
236
237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
238
239 if (rp->status)
240 return rp->status;
241
242 hdev->link_policy = __le16_to_cpu(rp->policy);
243
244 return rp->status;
245}
246
247static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
248 struct sk_buff *skb)
249{
250 struct hci_ev_status *rp = data;
251 void *sent;
252
253 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
254
255 if (rp->status)
256 return rp->status;
257
258 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
259 if (!sent)
260 return rp->status;
261
262 hdev->link_policy = get_unaligned_le16(sent);
263
264 return rp->status;
265}
266
267static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
268{
269 struct hci_ev_status *rp = data;
270
271 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
272
273 clear_bit(HCI_RESET, &hdev->flags);
274
275 if (rp->status)
276 return rp->status;
277
278 /* Reset all non-persistent flags */
279 hci_dev_clear_volatile_flags(hdev);
280
281 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
282
283 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
284 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
285
286 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
287 hdev->adv_data_len = 0;
288
289 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
290 hdev->scan_rsp_data_len = 0;
291
292 hdev->le_scan_type = LE_SCAN_PASSIVE;
293
294 hdev->ssp_debug_mode = 0;
295
296 hci_bdaddr_list_clear(&hdev->le_accept_list);
297 hci_bdaddr_list_clear(&hdev->le_resolv_list);
298
299 return rp->status;
300}
301
302static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
303 struct sk_buff *skb)
304{
305 struct hci_rp_read_stored_link_key *rp = data;
306 struct hci_cp_read_stored_link_key *sent;
307
308 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
309
310 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
311 if (!sent)
312 return rp->status;
313
314 if (!rp->status && sent->read_all == 0x01) {
315 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
316 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
317 }
318
319 return rp->status;
320}
321
322static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
323 struct sk_buff *skb)
324{
325 struct hci_rp_delete_stored_link_key *rp = data;
326 u16 num_keys;
327
328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
329
330 if (rp->status)
331 return rp->status;
332
333 num_keys = le16_to_cpu(rp->num_keys);
334
335 if (num_keys <= hdev->stored_num_keys)
336 hdev->stored_num_keys -= num_keys;
337 else
338 hdev->stored_num_keys = 0;
339
340 return rp->status;
341}
342
343static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
344 struct sk_buff *skb)
345{
346 struct hci_ev_status *rp = data;
347 void *sent;
348
349 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
350
351 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
352 if (!sent)
353 return rp->status;
354
355 hci_dev_lock(hdev);
356
357 if (hci_dev_test_flag(hdev, HCI_MGMT))
358 mgmt_set_local_name_complete(hdev, sent, rp->status);
359 else if (!rp->status)
360 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
361
362 hci_dev_unlock(hdev);
363
364 return rp->status;
365}
366
367static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
368 struct sk_buff *skb)
369{
370 struct hci_rp_read_local_name *rp = data;
371
372 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
373
374 if (rp->status)
375 return rp->status;
376
377 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
378 hci_dev_test_flag(hdev, HCI_CONFIG))
379 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
380
381 return rp->status;
382}
383
384static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
385 struct sk_buff *skb)
386{
387 struct hci_ev_status *rp = data;
388 void *sent;
389
390 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
391
392 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
393 if (!sent)
394 return rp->status;
395
396 hci_dev_lock(hdev);
397
398 if (!rp->status) {
399 __u8 param = *((__u8 *) sent);
400
401 if (param == AUTH_ENABLED)
402 set_bit(HCI_AUTH, &hdev->flags);
403 else
404 clear_bit(HCI_AUTH, &hdev->flags);
405 }
406
407 if (hci_dev_test_flag(hdev, HCI_MGMT))
408 mgmt_auth_enable_complete(hdev, rp->status);
409
410 hci_dev_unlock(hdev);
411
412 return rp->status;
413}
414
415static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
416 struct sk_buff *skb)
417{
418 struct hci_ev_status *rp = data;
419 __u8 param;
420 void *sent;
421
422 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
423
424 if (rp->status)
425 return rp->status;
426
427 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
428 if (!sent)
429 return rp->status;
430
431 param = *((__u8 *) sent);
432
433 if (param)
434 set_bit(HCI_ENCRYPT, &hdev->flags);
435 else
436 clear_bit(HCI_ENCRYPT, &hdev->flags);
437
438 return rp->status;
439}
440
441static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
442 struct sk_buff *skb)
443{
444 struct hci_ev_status *rp = data;
445 __u8 param;
446 void *sent;
447
448 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
449
450 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
451 if (!sent)
452 return rp->status;
453
454 param = *((__u8 *) sent);
455
456 hci_dev_lock(hdev);
457
458 if (rp->status) {
459 hdev->discov_timeout = 0;
460 goto done;
461 }
462
463 if (param & SCAN_INQUIRY)
464 set_bit(HCI_ISCAN, &hdev->flags);
465 else
466 clear_bit(HCI_ISCAN, &hdev->flags);
467
468 if (param & SCAN_PAGE)
469 set_bit(HCI_PSCAN, &hdev->flags);
470 else
471 clear_bit(HCI_PSCAN, &hdev->flags);
472
473done:
474 hci_dev_unlock(hdev);
475
476 return rp->status;
477}
478
479static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
480 struct sk_buff *skb)
481{
482 struct hci_ev_status *rp = data;
483 struct hci_cp_set_event_filter *cp;
484 void *sent;
485
486 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
487
488 if (rp->status)
489 return rp->status;
490
491 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
492 if (!sent)
493 return rp->status;
494
495 cp = (struct hci_cp_set_event_filter *)sent;
496
497 if (cp->flt_type == HCI_FLT_CLEAR_ALL)
498 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
499 else
500 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
501
502 return rp->status;
503}
504
505static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
506 struct sk_buff *skb)
507{
508 struct hci_rp_read_class_of_dev *rp = data;
509
510 if (WARN_ON(!hdev))
511 return HCI_ERROR_UNSPECIFIED;
512
513 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
514
515 if (rp->status)
516 return rp->status;
517
518 memcpy(hdev->dev_class, rp->dev_class, 3);
519
520 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
521 hdev->dev_class[1], hdev->dev_class[0]);
522
523 return rp->status;
524}
525
526static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
527 struct sk_buff *skb)
528{
529 struct hci_ev_status *rp = data;
530 void *sent;
531
532 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
533
534 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
535 if (!sent)
536 return rp->status;
537
538 hci_dev_lock(hdev);
539
540 if (!rp->status)
541 memcpy(hdev->dev_class, sent, 3);
542
543 if (hci_dev_test_flag(hdev, HCI_MGMT))
544 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
545
546 hci_dev_unlock(hdev);
547
548 return rp->status;
549}
550
551static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
552 struct sk_buff *skb)
553{
554 struct hci_rp_read_voice_setting *rp = data;
555 __u16 setting;
556
557 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
558
559 if (rp->status)
560 return rp->status;
561
562 setting = __le16_to_cpu(rp->voice_setting);
563
564 if (hdev->voice_setting == setting)
565 return rp->status;
566
567 hdev->voice_setting = setting;
568
569 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
570
571 if (hdev->notify)
572 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
573
574 return rp->status;
575}
576
577static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
578 struct sk_buff *skb)
579{
580 struct hci_ev_status *rp = data;
581 __u16 setting;
582 void *sent;
583
584 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
585
586 if (rp->status)
587 return rp->status;
588
589 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
590 if (!sent)
591 return rp->status;
592
593 setting = get_unaligned_le16(sent);
594
595 if (hdev->voice_setting == setting)
596 return rp->status;
597
598 hdev->voice_setting = setting;
599
600 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
601
602 if (hdev->notify)
603 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
604
605 return rp->status;
606}
607
608static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
609 struct sk_buff *skb)
610{
611 struct hci_rp_read_num_supported_iac *rp = data;
612
613 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
614
615 if (rp->status)
616 return rp->status;
617
618 hdev->num_iac = rp->num_iac;
619
620 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
621
622 return rp->status;
623}
624
625static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
626 struct sk_buff *skb)
627{
628 struct hci_ev_status *rp = data;
629 struct hci_cp_write_ssp_mode *sent;
630
631 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
632
633 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
634 if (!sent)
635 return rp->status;
636
637 hci_dev_lock(hdev);
638
639 if (!rp->status) {
640 if (sent->mode)
641 hdev->features[1][0] |= LMP_HOST_SSP;
642 else
643 hdev->features[1][0] &= ~LMP_HOST_SSP;
644 }
645
646 if (!rp->status) {
647 if (sent->mode)
648 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
649 else
650 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
651 }
652
653 hci_dev_unlock(hdev);
654
655 return rp->status;
656}
657
658static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
659 struct sk_buff *skb)
660{
661 struct hci_ev_status *rp = data;
662 struct hci_cp_write_sc_support *sent;
663
664 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
665
666 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
667 if (!sent)
668 return rp->status;
669
670 hci_dev_lock(hdev);
671
672 if (!rp->status) {
673 if (sent->support)
674 hdev->features[1][0] |= LMP_HOST_SC;
675 else
676 hdev->features[1][0] &= ~LMP_HOST_SC;
677 }
678
679 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
680 if (sent->support)
681 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
682 else
683 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
684 }
685
686 hci_dev_unlock(hdev);
687
688 return rp->status;
689}
690
691static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
692 struct sk_buff *skb)
693{
694 struct hci_rp_read_local_version *rp = data;
695
696 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
697
698 if (rp->status)
699 return rp->status;
700
701 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
702 hci_dev_test_flag(hdev, HCI_CONFIG)) {
703 hdev->hci_ver = rp->hci_ver;
704 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
705 hdev->lmp_ver = rp->lmp_ver;
706 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
707 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
708 }
709
710 return rp->status;
711}
712
713static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
714 struct sk_buff *skb)
715{
716 struct hci_rp_read_enc_key_size *rp = data;
717 struct hci_conn *conn;
718 u16 handle;
719 u8 status = rp->status;
720
721 bt_dev_dbg(hdev, "status 0x%2.2x", status);
722
723 handle = le16_to_cpu(rp->handle);
724
725 hci_dev_lock(hdev);
726
727 conn = hci_conn_hash_lookup_handle(hdev, handle);
728 if (!conn) {
729 status = 0xFF;
730 goto done;
731 }
732
733 /* While unexpected, the read_enc_key_size command may fail. The most
734 * secure approach is to then assume the key size is 0 to force a
735 * disconnection.
736 */
737 if (status) {
738 bt_dev_err(hdev, "failed to read key size for handle %u",
739 handle);
740 conn->enc_key_size = 0;
741 } else {
742 conn->enc_key_size = rp->key_size;
743 status = 0;
744
745 if (conn->enc_key_size < hdev->min_enc_key_size) {
746 /* As slave role, the conn->state has been set to
747 * BT_CONNECTED and l2cap conn req might not be received
748 * yet, at this moment the l2cap layer almost does
749 * nothing with the non-zero status.
750 * So we also clear encrypt related bits, and then the
751 * handler of l2cap conn req will get the right secure
752 * state at a later time.
753 */
754 status = HCI_ERROR_AUTH_FAILURE;
755 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
756 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
757 }
758 }
759
760 hci_encrypt_cfm(conn, status);
761
762done:
763 hci_dev_unlock(hdev);
764
765 return status;
766}
767
768static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
769 struct sk_buff *skb)
770{
771 struct hci_rp_read_local_commands *rp = data;
772
773 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
774
775 if (rp->status)
776 return rp->status;
777
778 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
779 hci_dev_test_flag(hdev, HCI_CONFIG))
780 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
781
782 return rp->status;
783}
784
785static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
786 struct sk_buff *skb)
787{
788 struct hci_rp_read_auth_payload_to *rp = data;
789 struct hci_conn *conn;
790
791 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
792
793 if (rp->status)
794 return rp->status;
795
796 hci_dev_lock(hdev);
797
798 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
799 if (conn)
800 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
801
802 hci_dev_unlock(hdev);
803
804 return rp->status;
805}
806
807static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
808 struct sk_buff *skb)
809{
810 struct hci_rp_write_auth_payload_to *rp = data;
811 struct hci_conn *conn;
812 void *sent;
813
814 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
815
816 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
817 if (!sent)
818 return rp->status;
819
820 hci_dev_lock(hdev);
821
822 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
823 if (!conn) {
824 rp->status = 0xff;
825 goto unlock;
826 }
827
828 if (!rp->status)
829 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
830
831unlock:
832 hci_dev_unlock(hdev);
833
834 return rp->status;
835}
836
837static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
838 struct sk_buff *skb)
839{
840 struct hci_rp_read_local_features *rp = data;
841
842 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
843
844 if (rp->status)
845 return rp->status;
846
847 memcpy(hdev->features, rp->features, 8);
848
849 /* Adjust default settings according to features
850 * supported by device. */
851
852 if (hdev->features[0][0] & LMP_3SLOT)
853 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
854
855 if (hdev->features[0][0] & LMP_5SLOT)
856 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
857
858 if (hdev->features[0][1] & LMP_HV2) {
859 hdev->pkt_type |= (HCI_HV2);
860 hdev->esco_type |= (ESCO_HV2);
861 }
862
863 if (hdev->features[0][1] & LMP_HV3) {
864 hdev->pkt_type |= (HCI_HV3);
865 hdev->esco_type |= (ESCO_HV3);
866 }
867
868 if (lmp_esco_capable(hdev))
869 hdev->esco_type |= (ESCO_EV3);
870
871 if (hdev->features[0][4] & LMP_EV4)
872 hdev->esco_type |= (ESCO_EV4);
873
874 if (hdev->features[0][4] & LMP_EV5)
875 hdev->esco_type |= (ESCO_EV5);
876
877 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
878 hdev->esco_type |= (ESCO_2EV3);
879
880 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
881 hdev->esco_type |= (ESCO_3EV3);
882
883 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
884 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
885
886 return rp->status;
887}
888
889static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
890 struct sk_buff *skb)
891{
892 struct hci_rp_read_local_ext_features *rp = data;
893
894 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
895
896 if (rp->status)
897 return rp->status;
898
899 if (hdev->max_page < rp->max_page) {
900 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
901 &hdev->quirks))
902 bt_dev_warn(hdev, "broken local ext features page 2");
903 else
904 hdev->max_page = rp->max_page;
905 }
906
907 if (rp->page < HCI_MAX_PAGES)
908 memcpy(hdev->features[rp->page], rp->features, 8);
909
910 return rp->status;
911}
912
913static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
914 struct sk_buff *skb)
915{
916 struct hci_rp_read_buffer_size *rp = data;
917
918 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
919
920 if (rp->status)
921 return rp->status;
922
923 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
924 hdev->sco_mtu = rp->sco_mtu;
925 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
926 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
927
928 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
929 hdev->sco_mtu = 64;
930 hdev->sco_pkts = 8;
931 }
932
933 hdev->acl_cnt = hdev->acl_pkts;
934 hdev->sco_cnt = hdev->sco_pkts;
935
936 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
937 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
938
939 if (!hdev->acl_mtu || !hdev->acl_pkts)
940 return HCI_ERROR_INVALID_PARAMETERS;
941
942 return rp->status;
943}
944
945static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
946 struct sk_buff *skb)
947{
948 struct hci_rp_read_bd_addr *rp = data;
949
950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
951
952 if (rp->status)
953 return rp->status;
954
955 if (test_bit(HCI_INIT, &hdev->flags))
956 bacpy(&hdev->bdaddr, &rp->bdaddr);
957
958 if (hci_dev_test_flag(hdev, HCI_SETUP))
959 bacpy(&hdev->setup_addr, &rp->bdaddr);
960
961 return rp->status;
962}
963
964static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
965 struct sk_buff *skb)
966{
967 struct hci_rp_read_local_pairing_opts *rp = data;
968
969 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
970
971 if (rp->status)
972 return rp->status;
973
974 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
975 hci_dev_test_flag(hdev, HCI_CONFIG)) {
976 hdev->pairing_opts = rp->pairing_opts;
977 hdev->max_enc_key_size = rp->max_key_size;
978 }
979
980 return rp->status;
981}
982
983static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
984 struct sk_buff *skb)
985{
986 struct hci_rp_read_page_scan_activity *rp = data;
987
988 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
989
990 if (rp->status)
991 return rp->status;
992
993 if (test_bit(HCI_INIT, &hdev->flags)) {
994 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
995 hdev->page_scan_window = __le16_to_cpu(rp->window);
996 }
997
998 return rp->status;
999}
1000
1001static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1002 struct sk_buff *skb)
1003{
1004 struct hci_ev_status *rp = data;
1005 struct hci_cp_write_page_scan_activity *sent;
1006
1007 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1008
1009 if (rp->status)
1010 return rp->status;
1011
1012 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1013 if (!sent)
1014 return rp->status;
1015
1016 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1017 hdev->page_scan_window = __le16_to_cpu(sent->window);
1018
1019 return rp->status;
1020}
1021
1022static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1023 struct sk_buff *skb)
1024{
1025 struct hci_rp_read_page_scan_type *rp = data;
1026
1027 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1028
1029 if (rp->status)
1030 return rp->status;
1031
1032 if (test_bit(HCI_INIT, &hdev->flags))
1033 hdev->page_scan_type = rp->type;
1034
1035 return rp->status;
1036}
1037
1038static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1039 struct sk_buff *skb)
1040{
1041 struct hci_ev_status *rp = data;
1042 u8 *type;
1043
1044 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1045
1046 if (rp->status)
1047 return rp->status;
1048
1049 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1050 if (type)
1051 hdev->page_scan_type = *type;
1052
1053 return rp->status;
1054}
1055
1056static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1057 struct sk_buff *skb)
1058{
1059 struct hci_rp_read_clock *rp = data;
1060 struct hci_cp_read_clock *cp;
1061 struct hci_conn *conn;
1062
1063 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1064
1065 if (rp->status)
1066 return rp->status;
1067
1068 hci_dev_lock(hdev);
1069
1070 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1071 if (!cp)
1072 goto unlock;
1073
1074 if (cp->which == 0x00) {
1075 hdev->clock = le32_to_cpu(rp->clock);
1076 goto unlock;
1077 }
1078
1079 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1080 if (conn) {
1081 conn->clock = le32_to_cpu(rp->clock);
1082 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1083 }
1084
1085unlock:
1086 hci_dev_unlock(hdev);
1087 return rp->status;
1088}
1089
1090static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1091 struct sk_buff *skb)
1092{
1093 struct hci_rp_read_inq_rsp_tx_power *rp = data;
1094
1095 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1096
1097 if (rp->status)
1098 return rp->status;
1099
1100 hdev->inq_tx_power = rp->tx_power;
1101
1102 return rp->status;
1103}
1104
1105static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1106 struct sk_buff *skb)
1107{
1108 struct hci_rp_read_def_err_data_reporting *rp = data;
1109
1110 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1111
1112 if (rp->status)
1113 return rp->status;
1114
1115 hdev->err_data_reporting = rp->err_data_reporting;
1116
1117 return rp->status;
1118}
1119
1120static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1121 struct sk_buff *skb)
1122{
1123 struct hci_ev_status *rp = data;
1124 struct hci_cp_write_def_err_data_reporting *cp;
1125
1126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1127
1128 if (rp->status)
1129 return rp->status;
1130
1131 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1132 if (!cp)
1133 return rp->status;
1134
1135 hdev->err_data_reporting = cp->err_data_reporting;
1136
1137 return rp->status;
1138}
1139
1140static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1141 struct sk_buff *skb)
1142{
1143 struct hci_rp_pin_code_reply *rp = data;
1144 struct hci_cp_pin_code_reply *cp;
1145 struct hci_conn *conn;
1146
1147 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1148
1149 hci_dev_lock(hdev);
1150
1151 if (hci_dev_test_flag(hdev, HCI_MGMT))
1152 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1153
1154 if (rp->status)
1155 goto unlock;
1156
1157 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1158 if (!cp)
1159 goto unlock;
1160
1161 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1162 if (conn)
1163 conn->pin_length = cp->pin_len;
1164
1165unlock:
1166 hci_dev_unlock(hdev);
1167 return rp->status;
1168}
1169
1170static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1171 struct sk_buff *skb)
1172{
1173 struct hci_rp_pin_code_neg_reply *rp = data;
1174
1175 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1176
1177 hci_dev_lock(hdev);
1178
1179 if (hci_dev_test_flag(hdev, HCI_MGMT))
1180 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1181 rp->status);
1182
1183 hci_dev_unlock(hdev);
1184
1185 return rp->status;
1186}
1187
1188static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1189 struct sk_buff *skb)
1190{
1191 struct hci_rp_le_read_buffer_size *rp = data;
1192
1193 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1194
1195 if (rp->status)
1196 return rp->status;
1197
1198 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1199 hdev->le_pkts = rp->le_max_pkt;
1200
1201 hdev->le_cnt = hdev->le_pkts;
1202
1203 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1204
1205 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU)
1206 return HCI_ERROR_INVALID_PARAMETERS;
1207
1208 return rp->status;
1209}
1210
1211static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1212 struct sk_buff *skb)
1213{
1214 struct hci_rp_le_read_local_features *rp = data;
1215
1216 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1217
1218 if (rp->status)
1219 return rp->status;
1220
1221 memcpy(hdev->le_features, rp->features, 8);
1222
1223 return rp->status;
1224}
1225
1226static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1227 struct sk_buff *skb)
1228{
1229 struct hci_rp_le_read_adv_tx_power *rp = data;
1230
1231 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1232
1233 if (rp->status)
1234 return rp->status;
1235
1236 hdev->adv_tx_power = rp->tx_power;
1237
1238 return rp->status;
1239}
1240
1241static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1242 struct sk_buff *skb)
1243{
1244 struct hci_rp_user_confirm_reply *rp = data;
1245
1246 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1247
1248 hci_dev_lock(hdev);
1249
1250 if (hci_dev_test_flag(hdev, HCI_MGMT))
1251 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1252 rp->status);
1253
1254 hci_dev_unlock(hdev);
1255
1256 return rp->status;
1257}
1258
1259static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1260 struct sk_buff *skb)
1261{
1262 struct hci_rp_user_confirm_reply *rp = data;
1263
1264 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1265
1266 hci_dev_lock(hdev);
1267
1268 if (hci_dev_test_flag(hdev, HCI_MGMT))
1269 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1270 ACL_LINK, 0, rp->status);
1271
1272 hci_dev_unlock(hdev);
1273
1274 return rp->status;
1275}
1276
1277static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1278 struct sk_buff *skb)
1279{
1280 struct hci_rp_user_confirm_reply *rp = data;
1281
1282 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1283
1284 hci_dev_lock(hdev);
1285
1286 if (hci_dev_test_flag(hdev, HCI_MGMT))
1287 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1288 0, rp->status);
1289
1290 hci_dev_unlock(hdev);
1291
1292 return rp->status;
1293}
1294
1295static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1296 struct sk_buff *skb)
1297{
1298 struct hci_rp_user_confirm_reply *rp = data;
1299
1300 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1301
1302 hci_dev_lock(hdev);
1303
1304 if (hci_dev_test_flag(hdev, HCI_MGMT))
1305 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1306 ACL_LINK, 0, rp->status);
1307
1308 hci_dev_unlock(hdev);
1309
1310 return rp->status;
1311}
1312
1313static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1314 struct sk_buff *skb)
1315{
1316 struct hci_rp_read_local_oob_data *rp = data;
1317
1318 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1319
1320 return rp->status;
1321}
1322
1323static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1324 struct sk_buff *skb)
1325{
1326 struct hci_rp_read_local_oob_ext_data *rp = data;
1327
1328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1329
1330 return rp->status;
1331}
1332
1333static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1334 struct sk_buff *skb)
1335{
1336 struct hci_ev_status *rp = data;
1337 bdaddr_t *sent;
1338
1339 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1340
1341 if (rp->status)
1342 return rp->status;
1343
1344 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1345 if (!sent)
1346 return rp->status;
1347
1348 hci_dev_lock(hdev);
1349
1350 bacpy(&hdev->random_addr, sent);
1351
1352 if (!bacmp(&hdev->rpa, sent)) {
1353 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1354 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1355 secs_to_jiffies(hdev->rpa_timeout));
1356 }
1357
1358 hci_dev_unlock(hdev);
1359
1360 return rp->status;
1361}
1362
1363static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1364 struct sk_buff *skb)
1365{
1366 struct hci_ev_status *rp = data;
1367 struct hci_cp_le_set_default_phy *cp;
1368
1369 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1370
1371 if (rp->status)
1372 return rp->status;
1373
1374 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1375 if (!cp)
1376 return rp->status;
1377
1378 hci_dev_lock(hdev);
1379
1380 hdev->le_tx_def_phys = cp->tx_phys;
1381 hdev->le_rx_def_phys = cp->rx_phys;
1382
1383 hci_dev_unlock(hdev);
1384
1385 return rp->status;
1386}
1387
1388static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1389 struct sk_buff *skb)
1390{
1391 struct hci_ev_status *rp = data;
1392 struct hci_cp_le_set_adv_set_rand_addr *cp;
1393 struct adv_info *adv;
1394
1395 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1396
1397 if (rp->status)
1398 return rp->status;
1399
1400 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1401 /* Update only in case the adv instance since handle 0x00 shall be using
1402 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1403 * non-extended adverting.
1404 */
1405 if (!cp || !cp->handle)
1406 return rp->status;
1407
1408 hci_dev_lock(hdev);
1409
1410 adv = hci_find_adv_instance(hdev, cp->handle);
1411 if (adv) {
1412 bacpy(&adv->random_addr, &cp->bdaddr);
1413 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1414 adv->rpa_expired = false;
1415 queue_delayed_work(hdev->workqueue,
1416 &adv->rpa_expired_cb,
1417 secs_to_jiffies(hdev->rpa_timeout));
1418 }
1419 }
1420
1421 hci_dev_unlock(hdev);
1422
1423 return rp->status;
1424}
1425
1426static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1427 struct sk_buff *skb)
1428{
1429 struct hci_ev_status *rp = data;
1430 u8 *instance;
1431 int err;
1432
1433 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1434
1435 if (rp->status)
1436 return rp->status;
1437
1438 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1439 if (!instance)
1440 return rp->status;
1441
1442 hci_dev_lock(hdev);
1443
1444 err = hci_remove_adv_instance(hdev, *instance);
1445 if (!err)
1446 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1447 *instance);
1448
1449 hci_dev_unlock(hdev);
1450
1451 return rp->status;
1452}
1453
1454static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1455 struct sk_buff *skb)
1456{
1457 struct hci_ev_status *rp = data;
1458 struct adv_info *adv, *n;
1459 int err;
1460
1461 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1462
1463 if (rp->status)
1464 return rp->status;
1465
1466 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1467 return rp->status;
1468
1469 hci_dev_lock(hdev);
1470
1471 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1472 u8 instance = adv->instance;
1473
1474 err = hci_remove_adv_instance(hdev, instance);
1475 if (!err)
1476 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1477 hdev, instance);
1478 }
1479
1480 hci_dev_unlock(hdev);
1481
1482 return rp->status;
1483}
1484
1485static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1486 struct sk_buff *skb)
1487{
1488 struct hci_rp_le_read_transmit_power *rp = data;
1489
1490 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1491
1492 if (rp->status)
1493 return rp->status;
1494
1495 hdev->min_le_tx_power = rp->min_le_tx_power;
1496 hdev->max_le_tx_power = rp->max_le_tx_power;
1497
1498 return rp->status;
1499}
1500
1501static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1502 struct sk_buff *skb)
1503{
1504 struct hci_ev_status *rp = data;
1505 struct hci_cp_le_set_privacy_mode *cp;
1506 struct hci_conn_params *params;
1507
1508 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1509
1510 if (rp->status)
1511 return rp->status;
1512
1513 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1514 if (!cp)
1515 return rp->status;
1516
1517 hci_dev_lock(hdev);
1518
1519 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1520 if (params)
1521 WRITE_ONCE(params->privacy_mode, cp->mode);
1522
1523 hci_dev_unlock(hdev);
1524
1525 return rp->status;
1526}
1527
1528static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1529 struct sk_buff *skb)
1530{
1531 struct hci_ev_status *rp = data;
1532 __u8 *sent;
1533
1534 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1535
1536 if (rp->status)
1537 return rp->status;
1538
1539 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1540 if (!sent)
1541 return rp->status;
1542
1543 hci_dev_lock(hdev);
1544
1545 /* If we're doing connection initiation as peripheral. Set a
1546 * timeout in case something goes wrong.
1547 */
1548 if (*sent) {
1549 struct hci_conn *conn;
1550
1551 hci_dev_set_flag(hdev, HCI_LE_ADV);
1552
1553 conn = hci_lookup_le_connect(hdev);
1554 if (conn)
1555 queue_delayed_work(hdev->workqueue,
1556 &conn->le_conn_timeout,
1557 conn->conn_timeout);
1558 } else {
1559 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1560 }
1561
1562 hci_dev_unlock(hdev);
1563
1564 return rp->status;
1565}
1566
1567static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1568 struct sk_buff *skb)
1569{
1570 struct hci_cp_le_set_ext_adv_enable *cp;
1571 struct hci_cp_ext_adv_set *set;
1572 struct adv_info *adv = NULL, *n;
1573 struct hci_ev_status *rp = data;
1574
1575 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1576
1577 if (rp->status)
1578 return rp->status;
1579
1580 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1581 if (!cp)
1582 return rp->status;
1583
1584 set = (void *)cp->data;
1585
1586 hci_dev_lock(hdev);
1587
1588 if (cp->num_of_sets)
1589 adv = hci_find_adv_instance(hdev, set->handle);
1590
1591 if (cp->enable) {
1592 struct hci_conn *conn;
1593
1594 hci_dev_set_flag(hdev, HCI_LE_ADV);
1595
1596 if (adv && !adv->periodic)
1597 adv->enabled = true;
1598
1599 conn = hci_lookup_le_connect(hdev);
1600 if (conn)
1601 queue_delayed_work(hdev->workqueue,
1602 &conn->le_conn_timeout,
1603 conn->conn_timeout);
1604 } else {
1605 if (cp->num_of_sets) {
1606 if (adv)
1607 adv->enabled = false;
1608
1609 /* If just one instance was disabled check if there are
1610 * any other instance enabled before clearing HCI_LE_ADV
1611 */
1612 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1613 list) {
1614 if (adv->enabled)
1615 goto unlock;
1616 }
1617 } else {
1618 /* All instances shall be considered disabled */
1619 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1620 list)
1621 adv->enabled = false;
1622 }
1623
1624 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1625 }
1626
1627unlock:
1628 hci_dev_unlock(hdev);
1629 return rp->status;
1630}
1631
1632static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1633 struct sk_buff *skb)
1634{
1635 struct hci_cp_le_set_scan_param *cp;
1636 struct hci_ev_status *rp = data;
1637
1638 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1639
1640 if (rp->status)
1641 return rp->status;
1642
1643 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1644 if (!cp)
1645 return rp->status;
1646
1647 hci_dev_lock(hdev);
1648
1649 hdev->le_scan_type = cp->type;
1650
1651 hci_dev_unlock(hdev);
1652
1653 return rp->status;
1654}
1655
1656static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1657 struct sk_buff *skb)
1658{
1659 struct hci_cp_le_set_ext_scan_params *cp;
1660 struct hci_ev_status *rp = data;
1661 struct hci_cp_le_scan_phy_params *phy_param;
1662
1663 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1664
1665 if (rp->status)
1666 return rp->status;
1667
1668 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1669 if (!cp)
1670 return rp->status;
1671
1672 phy_param = (void *)cp->data;
1673
1674 hci_dev_lock(hdev);
1675
1676 hdev->le_scan_type = phy_param->type;
1677
1678 hci_dev_unlock(hdev);
1679
1680 return rp->status;
1681}
1682
1683static bool has_pending_adv_report(struct hci_dev *hdev)
1684{
1685 struct discovery_state *d = &hdev->discovery;
1686
1687 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1688}
1689
1690static void clear_pending_adv_report(struct hci_dev *hdev)
1691{
1692 struct discovery_state *d = &hdev->discovery;
1693
1694 bacpy(&d->last_adv_addr, BDADDR_ANY);
1695 d->last_adv_data_len = 0;
1696}
1697
1698static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1699 u8 bdaddr_type, s8 rssi, u32 flags,
1700 u8 *data, u8 len)
1701{
1702 struct discovery_state *d = &hdev->discovery;
1703
1704 if (len > max_adv_len(hdev))
1705 return;
1706
1707 bacpy(&d->last_adv_addr, bdaddr);
1708 d->last_adv_addr_type = bdaddr_type;
1709 d->last_adv_rssi = rssi;
1710 d->last_adv_flags = flags;
1711 memcpy(d->last_adv_data, data, len);
1712 d->last_adv_data_len = len;
1713}
1714
1715static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1716{
1717 hci_dev_lock(hdev);
1718
1719 switch (enable) {
1720 case LE_SCAN_ENABLE:
1721 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1722 if (hdev->le_scan_type == LE_SCAN_ACTIVE) {
1723 clear_pending_adv_report(hdev);
1724 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1725 }
1726 break;
1727
1728 case LE_SCAN_DISABLE:
1729 /* We do this here instead of when setting DISCOVERY_STOPPED
1730 * since the latter would potentially require waiting for
1731 * inquiry to stop too.
1732 */
1733 if (has_pending_adv_report(hdev)) {
1734 struct discovery_state *d = &hdev->discovery;
1735
1736 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1737 d->last_adv_addr_type, NULL,
1738 d->last_adv_rssi, d->last_adv_flags,
1739 d->last_adv_data,
1740 d->last_adv_data_len, NULL, 0, 0);
1741 }
1742
1743 /* Cancel this timer so that we don't try to disable scanning
1744 * when it's already disabled.
1745 */
1746 cancel_delayed_work(&hdev->le_scan_disable);
1747
1748 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1749
1750 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1751 * interrupted scanning due to a connect request. Mark
1752 * therefore discovery as stopped.
1753 */
1754 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1755 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1756 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1757 hdev->discovery.state == DISCOVERY_FINDING)
1758 queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1759
1760 break;
1761
1762 default:
1763 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1764 enable);
1765 break;
1766 }
1767
1768 hci_dev_unlock(hdev);
1769}
1770
1771static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1772 struct sk_buff *skb)
1773{
1774 struct hci_cp_le_set_scan_enable *cp;
1775 struct hci_ev_status *rp = data;
1776
1777 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1778
1779 if (rp->status)
1780 return rp->status;
1781
1782 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1783 if (!cp)
1784 return rp->status;
1785
1786 le_set_scan_enable_complete(hdev, cp->enable);
1787
1788 return rp->status;
1789}
1790
1791static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1792 struct sk_buff *skb)
1793{
1794 struct hci_cp_le_set_ext_scan_enable *cp;
1795 struct hci_ev_status *rp = data;
1796
1797 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1798
1799 if (rp->status)
1800 return rp->status;
1801
1802 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1803 if (!cp)
1804 return rp->status;
1805
1806 le_set_scan_enable_complete(hdev, cp->enable);
1807
1808 return rp->status;
1809}
1810
1811static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1812 struct sk_buff *skb)
1813{
1814 struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1815
1816 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1817 rp->num_of_sets);
1818
1819 if (rp->status)
1820 return rp->status;
1821
1822 hdev->le_num_of_adv_sets = rp->num_of_sets;
1823
1824 return rp->status;
1825}
1826
1827static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1828 struct sk_buff *skb)
1829{
1830 struct hci_rp_le_read_accept_list_size *rp = data;
1831
1832 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1833
1834 if (rp->status)
1835 return rp->status;
1836
1837 hdev->le_accept_list_size = rp->size;
1838
1839 return rp->status;
1840}
1841
1842static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1843 struct sk_buff *skb)
1844{
1845 struct hci_ev_status *rp = data;
1846
1847 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1848
1849 if (rp->status)
1850 return rp->status;
1851
1852 hci_dev_lock(hdev);
1853 hci_bdaddr_list_clear(&hdev->le_accept_list);
1854 hci_dev_unlock(hdev);
1855
1856 return rp->status;
1857}
1858
1859static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1860 struct sk_buff *skb)
1861{
1862 struct hci_cp_le_add_to_accept_list *sent;
1863 struct hci_ev_status *rp = data;
1864
1865 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1866
1867 if (rp->status)
1868 return rp->status;
1869
1870 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1871 if (!sent)
1872 return rp->status;
1873
1874 hci_dev_lock(hdev);
1875 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1876 sent->bdaddr_type);
1877 hci_dev_unlock(hdev);
1878
1879 return rp->status;
1880}
1881
1882static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1883 struct sk_buff *skb)
1884{
1885 struct hci_cp_le_del_from_accept_list *sent;
1886 struct hci_ev_status *rp = data;
1887
1888 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1889
1890 if (rp->status)
1891 return rp->status;
1892
1893 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1894 if (!sent)
1895 return rp->status;
1896
1897 hci_dev_lock(hdev);
1898 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1899 sent->bdaddr_type);
1900 hci_dev_unlock(hdev);
1901
1902 return rp->status;
1903}
1904
1905static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1906 struct sk_buff *skb)
1907{
1908 struct hci_rp_le_read_supported_states *rp = data;
1909
1910 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1911
1912 if (rp->status)
1913 return rp->status;
1914
1915 memcpy(hdev->le_states, rp->le_states, 8);
1916
1917 return rp->status;
1918}
1919
1920static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1921 struct sk_buff *skb)
1922{
1923 struct hci_rp_le_read_def_data_len *rp = data;
1924
1925 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1926
1927 if (rp->status)
1928 return rp->status;
1929
1930 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1931 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1932
1933 return rp->status;
1934}
1935
1936static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1937 struct sk_buff *skb)
1938{
1939 struct hci_cp_le_write_def_data_len *sent;
1940 struct hci_ev_status *rp = data;
1941
1942 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1943
1944 if (rp->status)
1945 return rp->status;
1946
1947 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1948 if (!sent)
1949 return rp->status;
1950
1951 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1952 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1953
1954 return rp->status;
1955}
1956
1957static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
1958 struct sk_buff *skb)
1959{
1960 struct hci_cp_le_add_to_resolv_list *sent;
1961 struct hci_ev_status *rp = data;
1962
1963 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1964
1965 if (rp->status)
1966 return rp->status;
1967
1968 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
1969 if (!sent)
1970 return rp->status;
1971
1972 hci_dev_lock(hdev);
1973 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
1974 sent->bdaddr_type, sent->peer_irk,
1975 sent->local_irk);
1976 hci_dev_unlock(hdev);
1977
1978 return rp->status;
1979}
1980
1981static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
1982 struct sk_buff *skb)
1983{
1984 struct hci_cp_le_del_from_resolv_list *sent;
1985 struct hci_ev_status *rp = data;
1986
1987 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1988
1989 if (rp->status)
1990 return rp->status;
1991
1992 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
1993 if (!sent)
1994 return rp->status;
1995
1996 hci_dev_lock(hdev);
1997 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
1998 sent->bdaddr_type);
1999 hci_dev_unlock(hdev);
2000
2001 return rp->status;
2002}
2003
2004static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2005 struct sk_buff *skb)
2006{
2007 struct hci_ev_status *rp = data;
2008
2009 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2010
2011 if (rp->status)
2012 return rp->status;
2013
2014 hci_dev_lock(hdev);
2015 hci_bdaddr_list_clear(&hdev->le_resolv_list);
2016 hci_dev_unlock(hdev);
2017
2018 return rp->status;
2019}
2020
2021static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2022 struct sk_buff *skb)
2023{
2024 struct hci_rp_le_read_resolv_list_size *rp = data;
2025
2026 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2027
2028 if (rp->status)
2029 return rp->status;
2030
2031 hdev->le_resolv_list_size = rp->size;
2032
2033 return rp->status;
2034}
2035
2036static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2037 struct sk_buff *skb)
2038{
2039 struct hci_ev_status *rp = data;
2040 __u8 *sent;
2041
2042 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2043
2044 if (rp->status)
2045 return rp->status;
2046
2047 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2048 if (!sent)
2049 return rp->status;
2050
2051 hci_dev_lock(hdev);
2052
2053 if (*sent)
2054 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2055 else
2056 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2057
2058 hci_dev_unlock(hdev);
2059
2060 return rp->status;
2061}
2062
2063static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2064 struct sk_buff *skb)
2065{
2066 struct hci_rp_le_read_max_data_len *rp = data;
2067
2068 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2069
2070 if (rp->status)
2071 return rp->status;
2072
2073 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2074 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2075 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2076 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2077
2078 return rp->status;
2079}
2080
2081static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2082 struct sk_buff *skb)
2083{
2084 struct hci_cp_write_le_host_supported *sent;
2085 struct hci_ev_status *rp = data;
2086
2087 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2088
2089 if (rp->status)
2090 return rp->status;
2091
2092 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2093 if (!sent)
2094 return rp->status;
2095
2096 hci_dev_lock(hdev);
2097
2098 if (sent->le) {
2099 hdev->features[1][0] |= LMP_HOST_LE;
2100 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2101 } else {
2102 hdev->features[1][0] &= ~LMP_HOST_LE;
2103 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2104 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2105 }
2106
2107 if (sent->simul)
2108 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2109 else
2110 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2111
2112 hci_dev_unlock(hdev);
2113
2114 return rp->status;
2115}
2116
2117static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2118 struct sk_buff *skb)
2119{
2120 struct hci_cp_le_set_adv_param *cp;
2121 struct hci_ev_status *rp = data;
2122
2123 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2124
2125 if (rp->status)
2126 return rp->status;
2127
2128 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2129 if (!cp)
2130 return rp->status;
2131
2132 hci_dev_lock(hdev);
2133 hdev->adv_addr_type = cp->own_address_type;
2134 hci_dev_unlock(hdev);
2135
2136 return rp->status;
2137}
2138
2139static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2140 struct sk_buff *skb)
2141{
2142 struct hci_rp_le_set_ext_adv_params *rp = data;
2143 struct hci_cp_le_set_ext_adv_params *cp;
2144 struct adv_info *adv_instance;
2145
2146 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2147
2148 if (rp->status)
2149 return rp->status;
2150
2151 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2152 if (!cp)
2153 return rp->status;
2154
2155 hci_dev_lock(hdev);
2156 hdev->adv_addr_type = cp->own_addr_type;
2157 if (!cp->handle) {
2158 /* Store in hdev for instance 0 */
2159 hdev->adv_tx_power = rp->tx_power;
2160 } else {
2161 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2162 if (adv_instance)
2163 adv_instance->tx_power = rp->tx_power;
2164 }
2165 /* Update adv data as tx power is known now */
2166 hci_update_adv_data(hdev, cp->handle);
2167
2168 hci_dev_unlock(hdev);
2169
2170 return rp->status;
2171}
2172
2173static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2174 struct sk_buff *skb)
2175{
2176 struct hci_rp_read_rssi *rp = data;
2177 struct hci_conn *conn;
2178
2179 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2180
2181 if (rp->status)
2182 return rp->status;
2183
2184 hci_dev_lock(hdev);
2185
2186 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2187 if (conn)
2188 conn->rssi = rp->rssi;
2189
2190 hci_dev_unlock(hdev);
2191
2192 return rp->status;
2193}
2194
2195static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2196 struct sk_buff *skb)
2197{
2198 struct hci_cp_read_tx_power *sent;
2199 struct hci_rp_read_tx_power *rp = data;
2200 struct hci_conn *conn;
2201
2202 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2203
2204 if (rp->status)
2205 return rp->status;
2206
2207 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2208 if (!sent)
2209 return rp->status;
2210
2211 hci_dev_lock(hdev);
2212
2213 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2214 if (!conn)
2215 goto unlock;
2216
2217 switch (sent->type) {
2218 case 0x00:
2219 conn->tx_power = rp->tx_power;
2220 break;
2221 case 0x01:
2222 conn->max_tx_power = rp->tx_power;
2223 break;
2224 }
2225
2226unlock:
2227 hci_dev_unlock(hdev);
2228 return rp->status;
2229}
2230
2231static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2232 struct sk_buff *skb)
2233{
2234 struct hci_ev_status *rp = data;
2235 u8 *mode;
2236
2237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2238
2239 if (rp->status)
2240 return rp->status;
2241
2242 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2243 if (mode)
2244 hdev->ssp_debug_mode = *mode;
2245
2246 return rp->status;
2247}
2248
2249static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2250{
2251 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2252
2253 if (status)
2254 return;
2255
2256 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2257 set_bit(HCI_INQUIRY, &hdev->flags);
2258}
2259
2260static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2261{
2262 struct hci_cp_create_conn *cp;
2263 struct hci_conn *conn;
2264
2265 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2266
2267 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2268 if (!cp)
2269 return;
2270
2271 hci_dev_lock(hdev);
2272
2273 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2274
2275 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2276
2277 if (status) {
2278 if (conn && conn->state == BT_CONNECT) {
2279 conn->state = BT_CLOSED;
2280 hci_connect_cfm(conn, status);
2281 hci_conn_del(conn);
2282 }
2283 } else {
2284 if (!conn) {
2285 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2286 HCI_ROLE_MASTER);
2287 if (IS_ERR(conn))
2288 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn));
2289 }
2290 }
2291
2292 hci_dev_unlock(hdev);
2293}
2294
2295static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2296{
2297 struct hci_cp_add_sco *cp;
2298 struct hci_conn *acl;
2299 struct hci_link *link;
2300 __u16 handle;
2301
2302 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2303
2304 if (!status)
2305 return;
2306
2307 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2308 if (!cp)
2309 return;
2310
2311 handle = __le16_to_cpu(cp->handle);
2312
2313 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2314
2315 hci_dev_lock(hdev);
2316
2317 acl = hci_conn_hash_lookup_handle(hdev, handle);
2318 if (acl) {
2319 link = list_first_entry_or_null(&acl->link_list,
2320 struct hci_link, list);
2321 if (link && link->conn) {
2322 link->conn->state = BT_CLOSED;
2323
2324 hci_connect_cfm(link->conn, status);
2325 hci_conn_del(link->conn);
2326 }
2327 }
2328
2329 hci_dev_unlock(hdev);
2330}
2331
2332static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2333{
2334 struct hci_cp_auth_requested *cp;
2335 struct hci_conn *conn;
2336
2337 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2338
2339 if (!status)
2340 return;
2341
2342 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2343 if (!cp)
2344 return;
2345
2346 hci_dev_lock(hdev);
2347
2348 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2349 if (conn) {
2350 if (conn->state == BT_CONFIG) {
2351 hci_connect_cfm(conn, status);
2352 hci_conn_drop(conn);
2353 }
2354 }
2355
2356 hci_dev_unlock(hdev);
2357}
2358
2359static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2360{
2361 struct hci_cp_set_conn_encrypt *cp;
2362 struct hci_conn *conn;
2363
2364 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2365
2366 if (!status)
2367 return;
2368
2369 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2370 if (!cp)
2371 return;
2372
2373 hci_dev_lock(hdev);
2374
2375 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2376 if (conn) {
2377 if (conn->state == BT_CONFIG) {
2378 hci_connect_cfm(conn, status);
2379 hci_conn_drop(conn);
2380 }
2381 }
2382
2383 hci_dev_unlock(hdev);
2384}
2385
2386static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2387 struct hci_conn *conn)
2388{
2389 if (conn->state != BT_CONFIG || !conn->out)
2390 return 0;
2391
2392 if (conn->pending_sec_level == BT_SECURITY_SDP)
2393 return 0;
2394
2395 /* Only request authentication for SSP connections or non-SSP
2396 * devices with sec_level MEDIUM or HIGH or if MITM protection
2397 * is requested.
2398 */
2399 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2400 conn->pending_sec_level != BT_SECURITY_FIPS &&
2401 conn->pending_sec_level != BT_SECURITY_HIGH &&
2402 conn->pending_sec_level != BT_SECURITY_MEDIUM)
2403 return 0;
2404
2405 return 1;
2406}
2407
2408static int hci_resolve_name(struct hci_dev *hdev,
2409 struct inquiry_entry *e)
2410{
2411 struct hci_cp_remote_name_req cp;
2412
2413 memset(&cp, 0, sizeof(cp));
2414
2415 bacpy(&cp.bdaddr, &e->data.bdaddr);
2416 cp.pscan_rep_mode = e->data.pscan_rep_mode;
2417 cp.pscan_mode = e->data.pscan_mode;
2418 cp.clock_offset = e->data.clock_offset;
2419
2420 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2421}
2422
2423static bool hci_resolve_next_name(struct hci_dev *hdev)
2424{
2425 struct discovery_state *discov = &hdev->discovery;
2426 struct inquiry_entry *e;
2427
2428 if (list_empty(&discov->resolve))
2429 return false;
2430
2431 /* We should stop if we already spent too much time resolving names. */
2432 if (time_after(jiffies, discov->name_resolve_timeout)) {
2433 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2434 return false;
2435 }
2436
2437 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2438 if (!e)
2439 return false;
2440
2441 if (hci_resolve_name(hdev, e) == 0) {
2442 e->name_state = NAME_PENDING;
2443 return true;
2444 }
2445
2446 return false;
2447}
2448
2449static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2450 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2451{
2452 struct discovery_state *discov = &hdev->discovery;
2453 struct inquiry_entry *e;
2454
2455 /* Update the mgmt connected state if necessary. Be careful with
2456 * conn objects that exist but are not (yet) connected however.
2457 * Only those in BT_CONFIG or BT_CONNECTED states can be
2458 * considered connected.
2459 */
2460 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED))
2461 mgmt_device_connected(hdev, conn, name, name_len);
2462
2463 if (discov->state == DISCOVERY_STOPPED)
2464 return;
2465
2466 if (discov->state == DISCOVERY_STOPPING)
2467 goto discov_complete;
2468
2469 if (discov->state != DISCOVERY_RESOLVING)
2470 return;
2471
2472 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2473 /* If the device was not found in a list of found devices names of which
2474 * are pending. there is no need to continue resolving a next name as it
2475 * will be done upon receiving another Remote Name Request Complete
2476 * Event */
2477 if (!e)
2478 return;
2479
2480 list_del(&e->list);
2481
2482 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2483 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2484 name, name_len);
2485
2486 if (hci_resolve_next_name(hdev))
2487 return;
2488
2489discov_complete:
2490 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2491}
2492
2493static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2494{
2495 struct hci_cp_remote_name_req *cp;
2496 struct hci_conn *conn;
2497
2498 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2499
2500 /* If successful wait for the name req complete event before
2501 * checking for the need to do authentication */
2502 if (!status)
2503 return;
2504
2505 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2506 if (!cp)
2507 return;
2508
2509 hci_dev_lock(hdev);
2510
2511 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2512
2513 if (hci_dev_test_flag(hdev, HCI_MGMT))
2514 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2515
2516 if (!conn)
2517 goto unlock;
2518
2519 if (!hci_outgoing_auth_needed(hdev, conn))
2520 goto unlock;
2521
2522 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2523 struct hci_cp_auth_requested auth_cp;
2524
2525 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2526
2527 auth_cp.handle = __cpu_to_le16(conn->handle);
2528 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2529 sizeof(auth_cp), &auth_cp);
2530 }
2531
2532unlock:
2533 hci_dev_unlock(hdev);
2534}
2535
2536static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2537{
2538 struct hci_cp_read_remote_features *cp;
2539 struct hci_conn *conn;
2540
2541 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2542
2543 if (!status)
2544 return;
2545
2546 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2547 if (!cp)
2548 return;
2549
2550 hci_dev_lock(hdev);
2551
2552 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2553 if (conn) {
2554 if (conn->state == BT_CONFIG) {
2555 hci_connect_cfm(conn, status);
2556 hci_conn_drop(conn);
2557 }
2558 }
2559
2560 hci_dev_unlock(hdev);
2561}
2562
2563static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2564{
2565 struct hci_cp_read_remote_ext_features *cp;
2566 struct hci_conn *conn;
2567
2568 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2569
2570 if (!status)
2571 return;
2572
2573 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2574 if (!cp)
2575 return;
2576
2577 hci_dev_lock(hdev);
2578
2579 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2580 if (conn) {
2581 if (conn->state == BT_CONFIG) {
2582 hci_connect_cfm(conn, status);
2583 hci_conn_drop(conn);
2584 }
2585 }
2586
2587 hci_dev_unlock(hdev);
2588}
2589
2590static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2591 __u8 status)
2592{
2593 struct hci_conn *acl;
2594 struct hci_link *link;
2595
2596 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2597
2598 hci_dev_lock(hdev);
2599
2600 acl = hci_conn_hash_lookup_handle(hdev, handle);
2601 if (acl) {
2602 link = list_first_entry_or_null(&acl->link_list,
2603 struct hci_link, list);
2604 if (link && link->conn) {
2605 link->conn->state = BT_CLOSED;
2606
2607 hci_connect_cfm(link->conn, status);
2608 hci_conn_del(link->conn);
2609 }
2610 }
2611
2612 hci_dev_unlock(hdev);
2613}
2614
2615static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2616{
2617 struct hci_cp_setup_sync_conn *cp;
2618
2619 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2620
2621 if (!status)
2622 return;
2623
2624 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2625 if (!cp)
2626 return;
2627
2628 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2629}
2630
2631static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2632{
2633 struct hci_cp_enhanced_setup_sync_conn *cp;
2634
2635 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2636
2637 if (!status)
2638 return;
2639
2640 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2641 if (!cp)
2642 return;
2643
2644 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2645}
2646
2647static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2648{
2649 struct hci_cp_sniff_mode *cp;
2650 struct hci_conn *conn;
2651
2652 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2653
2654 if (!status)
2655 return;
2656
2657 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2658 if (!cp)
2659 return;
2660
2661 hci_dev_lock(hdev);
2662
2663 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2664 if (conn) {
2665 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2666
2667 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2668 hci_sco_setup(conn, status);
2669 }
2670
2671 hci_dev_unlock(hdev);
2672}
2673
2674static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2675{
2676 struct hci_cp_exit_sniff_mode *cp;
2677 struct hci_conn *conn;
2678
2679 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2680
2681 if (!status)
2682 return;
2683
2684 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2685 if (!cp)
2686 return;
2687
2688 hci_dev_lock(hdev);
2689
2690 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2691 if (conn) {
2692 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2693
2694 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2695 hci_sco_setup(conn, status);
2696 }
2697
2698 hci_dev_unlock(hdev);
2699}
2700
2701static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2702{
2703 struct hci_cp_disconnect *cp;
2704 struct hci_conn_params *params;
2705 struct hci_conn *conn;
2706 bool mgmt_conn;
2707
2708 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2709
2710 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2711 * otherwise cleanup the connection immediately.
2712 */
2713 if (!status && !hdev->suspended)
2714 return;
2715
2716 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2717 if (!cp)
2718 return;
2719
2720 hci_dev_lock(hdev);
2721
2722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2723 if (!conn)
2724 goto unlock;
2725
2726 if (status) {
2727 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2728 conn->dst_type, status);
2729
2730 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2731 hdev->cur_adv_instance = conn->adv_instance;
2732 hci_enable_advertising(hdev);
2733 }
2734
2735 /* Inform sockets conn is gone before we delete it */
2736 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2737
2738 goto done;
2739 }
2740
2741 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2742
2743 if (conn->type == ACL_LINK) {
2744 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2745 hci_remove_link_key(hdev, &conn->dst);
2746 }
2747
2748 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2749 if (params) {
2750 switch (params->auto_connect) {
2751 case HCI_AUTO_CONN_LINK_LOSS:
2752 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2753 break;
2754 fallthrough;
2755
2756 case HCI_AUTO_CONN_DIRECT:
2757 case HCI_AUTO_CONN_ALWAYS:
2758 hci_pend_le_list_del_init(params);
2759 hci_pend_le_list_add(params, &hdev->pend_le_conns);
2760 break;
2761
2762 default:
2763 break;
2764 }
2765 }
2766
2767 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2768 cp->reason, mgmt_conn);
2769
2770 hci_disconn_cfm(conn, cp->reason);
2771
2772done:
2773 /* If the disconnection failed for any reason, the upper layer
2774 * does not retry to disconnect in current implementation.
2775 * Hence, we need to do some basic cleanup here and re-enable
2776 * advertising if necessary.
2777 */
2778 hci_conn_del(conn);
2779unlock:
2780 hci_dev_unlock(hdev);
2781}
2782
2783static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2784{
2785 /* When using controller based address resolution, then the new
2786 * address types 0x02 and 0x03 are used. These types need to be
2787 * converted back into either public address or random address type
2788 */
2789 switch (type) {
2790 case ADDR_LE_DEV_PUBLIC_RESOLVED:
2791 if (resolved)
2792 *resolved = true;
2793 return ADDR_LE_DEV_PUBLIC;
2794 case ADDR_LE_DEV_RANDOM_RESOLVED:
2795 if (resolved)
2796 *resolved = true;
2797 return ADDR_LE_DEV_RANDOM;
2798 }
2799
2800 if (resolved)
2801 *resolved = false;
2802 return type;
2803}
2804
2805static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2806 u8 peer_addr_type, u8 own_address_type,
2807 u8 filter_policy)
2808{
2809 struct hci_conn *conn;
2810
2811 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2812 peer_addr_type);
2813 if (!conn)
2814 return;
2815
2816 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2817
2818 /* Store the initiator and responder address information which
2819 * is needed for SMP. These values will not change during the
2820 * lifetime of the connection.
2821 */
2822 conn->init_addr_type = own_address_type;
2823 if (own_address_type == ADDR_LE_DEV_RANDOM)
2824 bacpy(&conn->init_addr, &hdev->random_addr);
2825 else
2826 bacpy(&conn->init_addr, &hdev->bdaddr);
2827
2828 conn->resp_addr_type = peer_addr_type;
2829 bacpy(&conn->resp_addr, peer_addr);
2830}
2831
2832static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2833{
2834 struct hci_cp_le_create_conn *cp;
2835
2836 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2837
2838 /* All connection failure handling is taken care of by the
2839 * hci_conn_failed function which is triggered by the HCI
2840 * request completion callbacks used for connecting.
2841 */
2842 if (status)
2843 return;
2844
2845 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2846 if (!cp)
2847 return;
2848
2849 hci_dev_lock(hdev);
2850
2851 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2852 cp->own_address_type, cp->filter_policy);
2853
2854 hci_dev_unlock(hdev);
2855}
2856
2857static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2858{
2859 struct hci_cp_le_ext_create_conn *cp;
2860
2861 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2862
2863 /* All connection failure handling is taken care of by the
2864 * hci_conn_failed function which is triggered by the HCI
2865 * request completion callbacks used for connecting.
2866 */
2867 if (status)
2868 return;
2869
2870 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2871 if (!cp)
2872 return;
2873
2874 hci_dev_lock(hdev);
2875
2876 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2877 cp->own_addr_type, cp->filter_policy);
2878
2879 hci_dev_unlock(hdev);
2880}
2881
2882static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2883{
2884 struct hci_cp_le_read_remote_features *cp;
2885 struct hci_conn *conn;
2886
2887 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2888
2889 if (!status)
2890 return;
2891
2892 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2893 if (!cp)
2894 return;
2895
2896 hci_dev_lock(hdev);
2897
2898 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2899 if (conn) {
2900 if (conn->state == BT_CONFIG) {
2901 hci_connect_cfm(conn, status);
2902 hci_conn_drop(conn);
2903 }
2904 }
2905
2906 hci_dev_unlock(hdev);
2907}
2908
2909static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2910{
2911 struct hci_cp_le_start_enc *cp;
2912 struct hci_conn *conn;
2913
2914 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2915
2916 if (!status)
2917 return;
2918
2919 hci_dev_lock(hdev);
2920
2921 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2922 if (!cp)
2923 goto unlock;
2924
2925 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2926 if (!conn)
2927 goto unlock;
2928
2929 if (conn->state != BT_CONNECTED)
2930 goto unlock;
2931
2932 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2933 hci_conn_drop(conn);
2934
2935unlock:
2936 hci_dev_unlock(hdev);
2937}
2938
2939static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2940{
2941 struct hci_cp_switch_role *cp;
2942 struct hci_conn *conn;
2943
2944 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2945
2946 if (!status)
2947 return;
2948
2949 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2950 if (!cp)
2951 return;
2952
2953 hci_dev_lock(hdev);
2954
2955 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2956 if (conn)
2957 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2958
2959 hci_dev_unlock(hdev);
2960}
2961
2962static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
2963 struct sk_buff *skb)
2964{
2965 struct hci_ev_status *ev = data;
2966 struct discovery_state *discov = &hdev->discovery;
2967 struct inquiry_entry *e;
2968
2969 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
2970
2971 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2972 return;
2973
2974 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2975 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2976
2977 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2978 return;
2979
2980 hci_dev_lock(hdev);
2981
2982 if (discov->state != DISCOVERY_FINDING)
2983 goto unlock;
2984
2985 if (list_empty(&discov->resolve)) {
2986 /* When BR/EDR inquiry is active and no LE scanning is in
2987 * progress, then change discovery state to indicate completion.
2988 *
2989 * When running LE scanning and BR/EDR inquiry simultaneously
2990 * and the LE scan already finished, then change the discovery
2991 * state to indicate completion.
2992 */
2993 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2994 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2995 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2996 goto unlock;
2997 }
2998
2999 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3000 if (e && hci_resolve_name(hdev, e) == 0) {
3001 e->name_state = NAME_PENDING;
3002 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3003 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3004 } else {
3005 /* When BR/EDR inquiry is active and no LE scanning is in
3006 * progress, then change discovery state to indicate completion.
3007 *
3008 * When running LE scanning and BR/EDR inquiry simultaneously
3009 * and the LE scan already finished, then change the discovery
3010 * state to indicate completion.
3011 */
3012 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3013 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3014 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3015 }
3016
3017unlock:
3018 hci_dev_unlock(hdev);
3019}
3020
3021static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3022 struct sk_buff *skb)
3023{
3024 struct hci_ev_inquiry_result *ev = edata;
3025 struct inquiry_data data;
3026 int i;
3027
3028 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3029 flex_array_size(ev, info, ev->num)))
3030 return;
3031
3032 bt_dev_dbg(hdev, "num %d", ev->num);
3033
3034 if (!ev->num)
3035 return;
3036
3037 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3038 return;
3039
3040 hci_dev_lock(hdev);
3041
3042 for (i = 0; i < ev->num; i++) {
3043 struct inquiry_info *info = &ev->info[i];
3044 u32 flags;
3045
3046 bacpy(&data.bdaddr, &info->bdaddr);
3047 data.pscan_rep_mode = info->pscan_rep_mode;
3048 data.pscan_period_mode = info->pscan_period_mode;
3049 data.pscan_mode = info->pscan_mode;
3050 memcpy(data.dev_class, info->dev_class, 3);
3051 data.clock_offset = info->clock_offset;
3052 data.rssi = HCI_RSSI_INVALID;
3053 data.ssp_mode = 0x00;
3054
3055 flags = hci_inquiry_cache_update(hdev, &data, false);
3056
3057 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3058 info->dev_class, HCI_RSSI_INVALID,
3059 flags, NULL, 0, NULL, 0, 0);
3060 }
3061
3062 hci_dev_unlock(hdev);
3063}
3064
3065static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3066 struct sk_buff *skb)
3067{
3068 struct hci_ev_conn_complete *ev = data;
3069 struct hci_conn *conn;
3070 u8 status = ev->status;
3071
3072 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3073
3074 hci_dev_lock(hdev);
3075
3076 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3077 if (!conn) {
3078 /* In case of error status and there is no connection pending
3079 * just unlock as there is nothing to cleanup.
3080 */
3081 if (ev->status)
3082 goto unlock;
3083
3084 /* Connection may not exist if auto-connected. Check the bredr
3085 * allowlist to see if this device is allowed to auto connect.
3086 * If link is an ACL type, create a connection class
3087 * automatically.
3088 *
3089 * Auto-connect will only occur if the event filter is
3090 * programmed with a given address. Right now, event filter is
3091 * only used during suspend.
3092 */
3093 if (ev->link_type == ACL_LINK &&
3094 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3095 &ev->bdaddr,
3096 BDADDR_BREDR)) {
3097 conn = hci_conn_add_unset(hdev, ev->link_type,
3098 &ev->bdaddr, HCI_ROLE_SLAVE);
3099 if (IS_ERR(conn)) {
3100 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn));
3101 goto unlock;
3102 }
3103 } else {
3104 if (ev->link_type != SCO_LINK)
3105 goto unlock;
3106
3107 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3108 &ev->bdaddr);
3109 if (!conn)
3110 goto unlock;
3111
3112 conn->type = SCO_LINK;
3113 }
3114 }
3115
3116 /* The HCI_Connection_Complete event is only sent once per connection.
3117 * Processing it more than once per connection can corrupt kernel memory.
3118 *
3119 * As the connection handle is set here for the first time, it indicates
3120 * whether the connection is already set up.
3121 */
3122 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3123 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3124 goto unlock;
3125 }
3126
3127 if (!status) {
3128 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3129 if (status)
3130 goto done;
3131
3132 if (conn->type == ACL_LINK) {
3133 conn->state = BT_CONFIG;
3134 hci_conn_hold(conn);
3135
3136 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3137 !hci_find_link_key(hdev, &ev->bdaddr))
3138 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3139 else
3140 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3141 } else
3142 conn->state = BT_CONNECTED;
3143
3144 hci_debugfs_create_conn(conn);
3145 hci_conn_add_sysfs(conn);
3146
3147 if (test_bit(HCI_AUTH, &hdev->flags))
3148 set_bit(HCI_CONN_AUTH, &conn->flags);
3149
3150 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3151 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3152
3153 /* "Link key request" completed ahead of "connect request" completes */
3154 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3155 ev->link_type == ACL_LINK) {
3156 struct link_key *key;
3157 struct hci_cp_read_enc_key_size cp;
3158
3159 key = hci_find_link_key(hdev, &ev->bdaddr);
3160 if (key) {
3161 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3162
3163 if (!read_key_size_capable(hdev)) {
3164 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3165 } else {
3166 cp.handle = cpu_to_le16(conn->handle);
3167 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3168 sizeof(cp), &cp)) {
3169 bt_dev_err(hdev, "sending read key size failed");
3170 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3171 }
3172 }
3173
3174 hci_encrypt_cfm(conn, ev->status);
3175 }
3176 }
3177
3178 /* Get remote features */
3179 if (conn->type == ACL_LINK) {
3180 struct hci_cp_read_remote_features cp;
3181 cp.handle = ev->handle;
3182 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3183 sizeof(cp), &cp);
3184
3185 hci_update_scan(hdev);
3186 }
3187
3188 /* Set packet type for incoming connection */
3189 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3190 struct hci_cp_change_conn_ptype cp;
3191 cp.handle = ev->handle;
3192 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3193 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3194 &cp);
3195 }
3196 }
3197
3198 if (conn->type == ACL_LINK)
3199 hci_sco_setup(conn, ev->status);
3200
3201done:
3202 if (status) {
3203 hci_conn_failed(conn, status);
3204 } else if (ev->link_type == SCO_LINK) {
3205 switch (conn->setting & SCO_AIRMODE_MASK) {
3206 case SCO_AIRMODE_CVSD:
3207 if (hdev->notify)
3208 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3209 break;
3210 }
3211
3212 hci_connect_cfm(conn, status);
3213 }
3214
3215unlock:
3216 hci_dev_unlock(hdev);
3217}
3218
3219static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3220{
3221 struct hci_cp_reject_conn_req cp;
3222
3223 bacpy(&cp.bdaddr, bdaddr);
3224 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3225 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3226}
3227
3228static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3229 struct sk_buff *skb)
3230{
3231 struct hci_ev_conn_request *ev = data;
3232 int mask = hdev->link_mode;
3233 struct inquiry_entry *ie;
3234 struct hci_conn *conn;
3235 __u8 flags = 0;
3236
3237 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3238
3239 /* Reject incoming connection from device with same BD ADDR against
3240 * CVE-2020-26555
3241 */
3242 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3243 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3244 &ev->bdaddr);
3245 hci_reject_conn(hdev, &ev->bdaddr);
3246 return;
3247 }
3248
3249 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3250 &flags);
3251
3252 if (!(mask & HCI_LM_ACCEPT)) {
3253 hci_reject_conn(hdev, &ev->bdaddr);
3254 return;
3255 }
3256
3257 hci_dev_lock(hdev);
3258
3259 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3260 BDADDR_BREDR)) {
3261 hci_reject_conn(hdev, &ev->bdaddr);
3262 goto unlock;
3263 }
3264
3265 /* Require HCI_CONNECTABLE or an accept list entry to accept the
3266 * connection. These features are only touched through mgmt so
3267 * only do the checks if HCI_MGMT is set.
3268 */
3269 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3270 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3271 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3272 BDADDR_BREDR)) {
3273 hci_reject_conn(hdev, &ev->bdaddr);
3274 goto unlock;
3275 }
3276
3277 /* Connection accepted */
3278
3279 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3280 if (ie)
3281 memcpy(ie->data.dev_class, ev->dev_class, 3);
3282
3283 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3284 &ev->bdaddr);
3285 if (!conn) {
3286 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3287 HCI_ROLE_SLAVE);
3288 if (IS_ERR(conn)) {
3289 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn));
3290 goto unlock;
3291 }
3292 }
3293
3294 memcpy(conn->dev_class, ev->dev_class, 3);
3295
3296 hci_dev_unlock(hdev);
3297
3298 if (ev->link_type == ACL_LINK ||
3299 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3300 struct hci_cp_accept_conn_req cp;
3301 conn->state = BT_CONNECT;
3302
3303 bacpy(&cp.bdaddr, &ev->bdaddr);
3304
3305 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3306 cp.role = 0x00; /* Become central */
3307 else
3308 cp.role = 0x01; /* Remain peripheral */
3309
3310 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3311 } else if (!(flags & HCI_PROTO_DEFER)) {
3312 struct hci_cp_accept_sync_conn_req cp;
3313 conn->state = BT_CONNECT;
3314
3315 bacpy(&cp.bdaddr, &ev->bdaddr);
3316 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3317
3318 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
3319 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
3320 cp.max_latency = cpu_to_le16(0xffff);
3321 cp.content_format = cpu_to_le16(hdev->voice_setting);
3322 cp.retrans_effort = 0xff;
3323
3324 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3325 &cp);
3326 } else {
3327 conn->state = BT_CONNECT2;
3328 hci_connect_cfm(conn, 0);
3329 }
3330
3331 return;
3332unlock:
3333 hci_dev_unlock(hdev);
3334}
3335
3336static u8 hci_to_mgmt_reason(u8 err)
3337{
3338 switch (err) {
3339 case HCI_ERROR_CONNECTION_TIMEOUT:
3340 return MGMT_DEV_DISCONN_TIMEOUT;
3341 case HCI_ERROR_REMOTE_USER_TERM:
3342 case HCI_ERROR_REMOTE_LOW_RESOURCES:
3343 case HCI_ERROR_REMOTE_POWER_OFF:
3344 return MGMT_DEV_DISCONN_REMOTE;
3345 case HCI_ERROR_LOCAL_HOST_TERM:
3346 return MGMT_DEV_DISCONN_LOCAL_HOST;
3347 default:
3348 return MGMT_DEV_DISCONN_UNKNOWN;
3349 }
3350}
3351
3352static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3353 struct sk_buff *skb)
3354{
3355 struct hci_ev_disconn_complete *ev = data;
3356 u8 reason;
3357 struct hci_conn_params *params;
3358 struct hci_conn *conn;
3359 bool mgmt_connected;
3360
3361 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3362
3363 hci_dev_lock(hdev);
3364
3365 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3366 if (!conn)
3367 goto unlock;
3368
3369 if (ev->status) {
3370 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3371 conn->dst_type, ev->status);
3372 goto unlock;
3373 }
3374
3375 conn->state = BT_CLOSED;
3376
3377 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3378
3379 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3380 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3381 else
3382 reason = hci_to_mgmt_reason(ev->reason);
3383
3384 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3385 reason, mgmt_connected);
3386
3387 if (conn->type == ACL_LINK) {
3388 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3389 hci_remove_link_key(hdev, &conn->dst);
3390
3391 hci_update_scan(hdev);
3392 }
3393
3394 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3395 if (params) {
3396 switch (params->auto_connect) {
3397 case HCI_AUTO_CONN_LINK_LOSS:
3398 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3399 break;
3400 fallthrough;
3401
3402 case HCI_AUTO_CONN_DIRECT:
3403 case HCI_AUTO_CONN_ALWAYS:
3404 hci_pend_le_list_del_init(params);
3405 hci_pend_le_list_add(params, &hdev->pend_le_conns);
3406 hci_update_passive_scan(hdev);
3407 break;
3408
3409 default:
3410 break;
3411 }
3412 }
3413
3414 hci_disconn_cfm(conn, ev->reason);
3415
3416 /* Re-enable advertising if necessary, since it might
3417 * have been disabled by the connection. From the
3418 * HCI_LE_Set_Advertise_Enable command description in
3419 * the core specification (v4.0):
3420 * "The Controller shall continue advertising until the Host
3421 * issues an LE_Set_Advertise_Enable command with
3422 * Advertising_Enable set to 0x00 (Advertising is disabled)
3423 * or until a connection is created or until the Advertising
3424 * is timed out due to Directed Advertising."
3425 */
3426 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3427 hdev->cur_adv_instance = conn->adv_instance;
3428 hci_enable_advertising(hdev);
3429 }
3430
3431 hci_conn_del(conn);
3432
3433unlock:
3434 hci_dev_unlock(hdev);
3435}
3436
3437static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3438 struct sk_buff *skb)
3439{
3440 struct hci_ev_auth_complete *ev = data;
3441 struct hci_conn *conn;
3442
3443 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3444
3445 hci_dev_lock(hdev);
3446
3447 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3448 if (!conn)
3449 goto unlock;
3450
3451 if (!ev->status) {
3452 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3453 set_bit(HCI_CONN_AUTH, &conn->flags);
3454 conn->sec_level = conn->pending_sec_level;
3455 } else {
3456 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3457 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3458
3459 mgmt_auth_failed(conn, ev->status);
3460 }
3461
3462 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3463
3464 if (conn->state == BT_CONFIG) {
3465 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3466 struct hci_cp_set_conn_encrypt cp;
3467 cp.handle = ev->handle;
3468 cp.encrypt = 0x01;
3469 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3470 &cp);
3471 } else {
3472 conn->state = BT_CONNECTED;
3473 hci_connect_cfm(conn, ev->status);
3474 hci_conn_drop(conn);
3475 }
3476 } else {
3477 hci_auth_cfm(conn, ev->status);
3478
3479 hci_conn_hold(conn);
3480 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3481 hci_conn_drop(conn);
3482 }
3483
3484 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3485 if (!ev->status) {
3486 struct hci_cp_set_conn_encrypt cp;
3487 cp.handle = ev->handle;
3488 cp.encrypt = 0x01;
3489 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3490 &cp);
3491 } else {
3492 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3493 hci_encrypt_cfm(conn, ev->status);
3494 }
3495 }
3496
3497unlock:
3498 hci_dev_unlock(hdev);
3499}
3500
3501static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3502 struct sk_buff *skb)
3503{
3504 struct hci_ev_remote_name *ev = data;
3505 struct hci_conn *conn;
3506
3507 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3508
3509 hci_dev_lock(hdev);
3510
3511 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3512
3513 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3514 goto check_auth;
3515
3516 if (ev->status == 0)
3517 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3518 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3519 else
3520 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3521
3522check_auth:
3523 if (!conn)
3524 goto unlock;
3525
3526 if (!hci_outgoing_auth_needed(hdev, conn))
3527 goto unlock;
3528
3529 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3530 struct hci_cp_auth_requested cp;
3531
3532 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3533
3534 cp.handle = __cpu_to_le16(conn->handle);
3535 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3536 }
3537
3538unlock:
3539 hci_dev_unlock(hdev);
3540}
3541
3542static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3543 struct sk_buff *skb)
3544{
3545 struct hci_ev_encrypt_change *ev = data;
3546 struct hci_conn *conn;
3547
3548 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3549
3550 hci_dev_lock(hdev);
3551
3552 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3553 if (!conn)
3554 goto unlock;
3555
3556 if (!ev->status) {
3557 if (ev->encrypt) {
3558 /* Encryption implies authentication */
3559 set_bit(HCI_CONN_AUTH, &conn->flags);
3560 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3561 conn->sec_level = conn->pending_sec_level;
3562
3563 /* P-256 authentication key implies FIPS */
3564 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3565 set_bit(HCI_CONN_FIPS, &conn->flags);
3566
3567 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3568 conn->type == LE_LINK)
3569 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3570 } else {
3571 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3572 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3573 }
3574 }
3575
3576 /* We should disregard the current RPA and generate a new one
3577 * whenever the encryption procedure fails.
3578 */
3579 if (ev->status && conn->type == LE_LINK) {
3580 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3581 hci_adv_instances_set_rpa_expired(hdev, true);
3582 }
3583
3584 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3585
3586 /* Check link security requirements are met */
3587 if (!hci_conn_check_link_mode(conn))
3588 ev->status = HCI_ERROR_AUTH_FAILURE;
3589
3590 if (ev->status && conn->state == BT_CONNECTED) {
3591 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3592 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3593
3594 /* Notify upper layers so they can cleanup before
3595 * disconnecting.
3596 */
3597 hci_encrypt_cfm(conn, ev->status);
3598 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3599 hci_conn_drop(conn);
3600 goto unlock;
3601 }
3602
3603 /* Try reading the encryption key size for encrypted ACL links */
3604 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3605 struct hci_cp_read_enc_key_size cp;
3606
3607 /* Only send HCI_Read_Encryption_Key_Size if the
3608 * controller really supports it. If it doesn't, assume
3609 * the default size (16).
3610 */
3611 if (!read_key_size_capable(hdev)) {
3612 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3613 goto notify;
3614 }
3615
3616 cp.handle = cpu_to_le16(conn->handle);
3617 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3618 sizeof(cp), &cp)) {
3619 bt_dev_err(hdev, "sending read key size failed");
3620 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3621 goto notify;
3622 }
3623
3624 goto unlock;
3625 }
3626
3627 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers
3628 * to avoid unexpected SMP command errors when pairing.
3629 */
3630 if (test_bit(HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT,
3631 &hdev->quirks))
3632 goto notify;
3633
3634 /* Set the default Authenticated Payload Timeout after
3635 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3636 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3637 * sent when the link is active and Encryption is enabled, the conn
3638 * type can be either LE or ACL and controller must support LMP Ping.
3639 * Ensure for AES-CCM encryption as well.
3640 */
3641 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3642 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3643 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3644 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3645 struct hci_cp_write_auth_payload_to cp;
3646
3647 cp.handle = cpu_to_le16(conn->handle);
3648 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3649 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3650 sizeof(cp), &cp))
3651 bt_dev_err(hdev, "write auth payload timeout failed");
3652 }
3653
3654notify:
3655 hci_encrypt_cfm(conn, ev->status);
3656
3657unlock:
3658 hci_dev_unlock(hdev);
3659}
3660
3661static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3662 struct sk_buff *skb)
3663{
3664 struct hci_ev_change_link_key_complete *ev = data;
3665 struct hci_conn *conn;
3666
3667 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3668
3669 hci_dev_lock(hdev);
3670
3671 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3672 if (conn) {
3673 if (!ev->status)
3674 set_bit(HCI_CONN_SECURE, &conn->flags);
3675
3676 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3677
3678 hci_key_change_cfm(conn, ev->status);
3679 }
3680
3681 hci_dev_unlock(hdev);
3682}
3683
3684static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3685 struct sk_buff *skb)
3686{
3687 struct hci_ev_remote_features *ev = data;
3688 struct hci_conn *conn;
3689
3690 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3691
3692 hci_dev_lock(hdev);
3693
3694 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3695 if (!conn)
3696 goto unlock;
3697
3698 if (!ev->status)
3699 memcpy(conn->features[0], ev->features, 8);
3700
3701 if (conn->state != BT_CONFIG)
3702 goto unlock;
3703
3704 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3705 lmp_ext_feat_capable(conn)) {
3706 struct hci_cp_read_remote_ext_features cp;
3707 cp.handle = ev->handle;
3708 cp.page = 0x01;
3709 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3710 sizeof(cp), &cp);
3711 goto unlock;
3712 }
3713
3714 if (!ev->status) {
3715 struct hci_cp_remote_name_req cp;
3716 memset(&cp, 0, sizeof(cp));
3717 bacpy(&cp.bdaddr, &conn->dst);
3718 cp.pscan_rep_mode = 0x02;
3719 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3720 } else {
3721 mgmt_device_connected(hdev, conn, NULL, 0);
3722 }
3723
3724 if (!hci_outgoing_auth_needed(hdev, conn)) {
3725 conn->state = BT_CONNECTED;
3726 hci_connect_cfm(conn, ev->status);
3727 hci_conn_drop(conn);
3728 }
3729
3730unlock:
3731 hci_dev_unlock(hdev);
3732}
3733
3734static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3735{
3736 cancel_delayed_work(&hdev->cmd_timer);
3737
3738 rcu_read_lock();
3739 if (!test_bit(HCI_RESET, &hdev->flags)) {
3740 if (ncmd) {
3741 cancel_delayed_work(&hdev->ncmd_timer);
3742 atomic_set(&hdev->cmd_cnt, 1);
3743 } else {
3744 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3745 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3746 HCI_NCMD_TIMEOUT);
3747 }
3748 }
3749 rcu_read_unlock();
3750}
3751
3752static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3753 struct sk_buff *skb)
3754{
3755 struct hci_rp_le_read_buffer_size_v2 *rp = data;
3756
3757 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3758
3759 if (rp->status)
3760 return rp->status;
3761
3762 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
3763 hdev->le_pkts = rp->acl_max_pkt;
3764 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
3765 hdev->iso_pkts = rp->iso_max_pkt;
3766
3767 hdev->le_cnt = hdev->le_pkts;
3768 hdev->iso_cnt = hdev->iso_pkts;
3769
3770 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3771 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3772
3773 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU)
3774 return HCI_ERROR_INVALID_PARAMETERS;
3775
3776 return rp->status;
3777}
3778
3779static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3780{
3781 struct hci_conn *conn, *tmp;
3782
3783 lockdep_assert_held(&hdev->lock);
3784
3785 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3786 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3787 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3788 continue;
3789
3790 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3791 hci_conn_failed(conn, status);
3792 }
3793}
3794
3795static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3796 struct sk_buff *skb)
3797{
3798 struct hci_rp_le_set_cig_params *rp = data;
3799 struct hci_cp_le_set_cig_params *cp;
3800 struct hci_conn *conn;
3801 u8 status = rp->status;
3802 bool pending = false;
3803 int i;
3804
3805 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3806
3807 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3808 if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3809 rp->cig_id != cp->cig_id)) {
3810 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3811 status = HCI_ERROR_UNSPECIFIED;
3812 }
3813
3814 hci_dev_lock(hdev);
3815
3816 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3817 *
3818 * If the Status return parameter is non-zero, then the state of the CIG
3819 * and its CIS configurations shall not be changed by the command. If
3820 * the CIG did not already exist, it shall not be created.
3821 */
3822 if (status) {
3823 /* Keep current configuration, fail only the unbound CIS */
3824 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3825 goto unlock;
3826 }
3827
3828 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3829 *
3830 * If the Status return parameter is zero, then the Controller shall
3831 * set the Connection_Handle arrayed return parameter to the connection
3832 * handle(s) corresponding to the CIS configurations specified in
3833 * the CIS_IDs command parameter, in the same order.
3834 */
3835 for (i = 0; i < rp->num_handles; ++i) {
3836 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3837 cp->cis[i].cis_id);
3838 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3839 continue;
3840
3841 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3842 continue;
3843
3844 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3845 continue;
3846
3847 if (conn->state == BT_CONNECT)
3848 pending = true;
3849 }
3850
3851unlock:
3852 if (pending)
3853 hci_le_create_cis_pending(hdev);
3854
3855 hci_dev_unlock(hdev);
3856
3857 return rp->status;
3858}
3859
3860static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3861 struct sk_buff *skb)
3862{
3863 struct hci_rp_le_setup_iso_path *rp = data;
3864 struct hci_cp_le_setup_iso_path *cp;
3865 struct hci_conn *conn;
3866
3867 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3868
3869 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3870 if (!cp)
3871 return rp->status;
3872
3873 hci_dev_lock(hdev);
3874
3875 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3876 if (!conn)
3877 goto unlock;
3878
3879 if (rp->status) {
3880 hci_connect_cfm(conn, rp->status);
3881 hci_conn_del(conn);
3882 goto unlock;
3883 }
3884
3885 switch (cp->direction) {
3886 /* Input (Host to Controller) */
3887 case 0x00:
3888 /* Only confirm connection if output only */
3889 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3890 hci_connect_cfm(conn, rp->status);
3891 break;
3892 /* Output (Controller to Host) */
3893 case 0x01:
3894 /* Confirm connection since conn->iso_qos is always configured
3895 * last.
3896 */
3897 hci_connect_cfm(conn, rp->status);
3898
3899 /* Notify device connected in case it is a BIG Sync */
3900 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags))
3901 mgmt_device_connected(hdev, conn, NULL, 0);
3902
3903 break;
3904 }
3905
3906unlock:
3907 hci_dev_unlock(hdev);
3908 return rp->status;
3909}
3910
3911static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3912{
3913 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3914}
3915
3916static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3917 struct sk_buff *skb)
3918{
3919 struct hci_ev_status *rp = data;
3920 struct hci_cp_le_set_per_adv_params *cp;
3921
3922 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3923
3924 if (rp->status)
3925 return rp->status;
3926
3927 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3928 if (!cp)
3929 return rp->status;
3930
3931 /* TODO: set the conn state */
3932 return rp->status;
3933}
3934
3935static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3936 struct sk_buff *skb)
3937{
3938 struct hci_ev_status *rp = data;
3939 struct hci_cp_le_set_per_adv_enable *cp;
3940 struct adv_info *adv = NULL, *n;
3941 u8 per_adv_cnt = 0;
3942
3943 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3944
3945 if (rp->status)
3946 return rp->status;
3947
3948 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3949 if (!cp)
3950 return rp->status;
3951
3952 hci_dev_lock(hdev);
3953
3954 adv = hci_find_adv_instance(hdev, cp->handle);
3955
3956 if (cp->enable) {
3957 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3958
3959 if (adv)
3960 adv->enabled = true;
3961 } else {
3962 /* If just one instance was disabled check if there are
3963 * any other instance enabled before clearing HCI_LE_PER_ADV.
3964 * The current periodic adv instance will be marked as
3965 * disabled once extended advertising is also disabled.
3966 */
3967 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
3968 list) {
3969 if (adv->periodic && adv->enabled)
3970 per_adv_cnt++;
3971 }
3972
3973 if (per_adv_cnt > 1)
3974 goto unlock;
3975
3976 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3977 }
3978
3979unlock:
3980 hci_dev_unlock(hdev);
3981
3982 return rp->status;
3983}
3984
3985#define HCI_CC_VL(_op, _func, _min, _max) \
3986{ \
3987 .op = _op, \
3988 .func = _func, \
3989 .min_len = _min, \
3990 .max_len = _max, \
3991}
3992
3993#define HCI_CC(_op, _func, _len) \
3994 HCI_CC_VL(_op, _func, _len, _len)
3995
3996#define HCI_CC_STATUS(_op, _func) \
3997 HCI_CC(_op, _func, sizeof(struct hci_ev_status))
3998
3999static const struct hci_cc {
4000 u16 op;
4001 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4002 u16 min_len;
4003 u16 max_len;
4004} hci_cc_table[] = {
4005 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4006 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4007 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4008 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4009 hci_cc_remote_name_req_cancel),
4010 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4011 sizeof(struct hci_rp_role_discovery)),
4012 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4013 sizeof(struct hci_rp_read_link_policy)),
4014 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4015 sizeof(struct hci_rp_write_link_policy)),
4016 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4017 sizeof(struct hci_rp_read_def_link_policy)),
4018 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4019 hci_cc_write_def_link_policy),
4020 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4021 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4022 sizeof(struct hci_rp_read_stored_link_key)),
4023 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4024 sizeof(struct hci_rp_delete_stored_link_key)),
4025 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4026 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4027 sizeof(struct hci_rp_read_local_name)),
4028 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4029 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4030 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4031 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4032 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4033 sizeof(struct hci_rp_read_class_of_dev)),
4034 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4035 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4036 sizeof(struct hci_rp_read_voice_setting)),
4037 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4038 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4039 sizeof(struct hci_rp_read_num_supported_iac)),
4040 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4041 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4042 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4043 sizeof(struct hci_rp_read_auth_payload_to)),
4044 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4045 sizeof(struct hci_rp_write_auth_payload_to)),
4046 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4047 sizeof(struct hci_rp_read_local_version)),
4048 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4049 sizeof(struct hci_rp_read_local_commands)),
4050 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4051 sizeof(struct hci_rp_read_local_features)),
4052 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4053 sizeof(struct hci_rp_read_local_ext_features)),
4054 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4055 sizeof(struct hci_rp_read_buffer_size)),
4056 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4057 sizeof(struct hci_rp_read_bd_addr)),
4058 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4059 sizeof(struct hci_rp_read_local_pairing_opts)),
4060 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4061 sizeof(struct hci_rp_read_page_scan_activity)),
4062 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4063 hci_cc_write_page_scan_activity),
4064 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4065 sizeof(struct hci_rp_read_page_scan_type)),
4066 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4067 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4068 sizeof(struct hci_rp_read_clock)),
4069 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4070 sizeof(struct hci_rp_read_enc_key_size)),
4071 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4072 sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4073 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4074 hci_cc_read_def_err_data_reporting,
4075 sizeof(struct hci_rp_read_def_err_data_reporting)),
4076 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4077 hci_cc_write_def_err_data_reporting),
4078 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4079 sizeof(struct hci_rp_pin_code_reply)),
4080 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4081 sizeof(struct hci_rp_pin_code_neg_reply)),
4082 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4083 sizeof(struct hci_rp_read_local_oob_data)),
4084 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4085 sizeof(struct hci_rp_read_local_oob_ext_data)),
4086 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4087 sizeof(struct hci_rp_le_read_buffer_size)),
4088 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4089 sizeof(struct hci_rp_le_read_local_features)),
4090 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4091 sizeof(struct hci_rp_le_read_adv_tx_power)),
4092 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4093 sizeof(struct hci_rp_user_confirm_reply)),
4094 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4095 sizeof(struct hci_rp_user_confirm_reply)),
4096 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4097 sizeof(struct hci_rp_user_confirm_reply)),
4098 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4099 sizeof(struct hci_rp_user_confirm_reply)),
4100 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4101 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4102 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4103 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4104 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4105 hci_cc_le_read_accept_list_size,
4106 sizeof(struct hci_rp_le_read_accept_list_size)),
4107 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4108 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4109 hci_cc_le_add_to_accept_list),
4110 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4111 hci_cc_le_del_from_accept_list),
4112 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4113 sizeof(struct hci_rp_le_read_supported_states)),
4114 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4115 sizeof(struct hci_rp_le_read_def_data_len)),
4116 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4117 hci_cc_le_write_def_data_len),
4118 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4119 hci_cc_le_add_to_resolv_list),
4120 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4121 hci_cc_le_del_from_resolv_list),
4122 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4123 hci_cc_le_clear_resolv_list),
4124 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4125 sizeof(struct hci_rp_le_read_resolv_list_size)),
4126 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4127 hci_cc_le_set_addr_resolution_enable),
4128 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4129 sizeof(struct hci_rp_le_read_max_data_len)),
4130 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4131 hci_cc_write_le_host_supported),
4132 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4133 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4134 sizeof(struct hci_rp_read_rssi)),
4135 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4136 sizeof(struct hci_rp_read_tx_power)),
4137 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4138 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4139 hci_cc_le_set_ext_scan_param),
4140 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4141 hci_cc_le_set_ext_scan_enable),
4142 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4143 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4144 hci_cc_le_read_num_adv_sets,
4145 sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4146 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4147 sizeof(struct hci_rp_le_set_ext_adv_params)),
4148 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4149 hci_cc_le_set_ext_adv_enable),
4150 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4151 hci_cc_le_set_adv_set_random_addr),
4152 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4153 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4154 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4155 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4156 hci_cc_le_set_per_adv_enable),
4157 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4158 sizeof(struct hci_rp_le_read_transmit_power)),
4159 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4160 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4161 sizeof(struct hci_rp_le_read_buffer_size_v2)),
4162 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4163 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4164 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4165 sizeof(struct hci_rp_le_setup_iso_path)),
4166};
4167
4168static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4169 struct sk_buff *skb)
4170{
4171 void *data;
4172
4173 if (skb->len < cc->min_len) {
4174 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4175 cc->op, skb->len, cc->min_len);
4176 return HCI_ERROR_UNSPECIFIED;
4177 }
4178
4179 /* Just warn if the length is over max_len size it still be possible to
4180 * partially parse the cc so leave to callback to decide if that is
4181 * acceptable.
4182 */
4183 if (skb->len > cc->max_len)
4184 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4185 cc->op, skb->len, cc->max_len);
4186
4187 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4188 if (!data)
4189 return HCI_ERROR_UNSPECIFIED;
4190
4191 return cc->func(hdev, data, skb);
4192}
4193
4194static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4195 struct sk_buff *skb, u16 *opcode, u8 *status,
4196 hci_req_complete_t *req_complete,
4197 hci_req_complete_skb_t *req_complete_skb)
4198{
4199 struct hci_ev_cmd_complete *ev = data;
4200 int i;
4201
4202 *opcode = __le16_to_cpu(ev->opcode);
4203
4204 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4205
4206 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4207 if (hci_cc_table[i].op == *opcode) {
4208 *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4209 break;
4210 }
4211 }
4212
4213 if (i == ARRAY_SIZE(hci_cc_table)) {
4214 /* Unknown opcode, assume byte 0 contains the status, so
4215 * that e.g. __hci_cmd_sync() properly returns errors
4216 * for vendor specific commands send by HCI drivers.
4217 * If a vendor doesn't actually follow this convention we may
4218 * need to introduce a vendor CC table in order to properly set
4219 * the status.
4220 */
4221 *status = skb->data[0];
4222 }
4223
4224 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4225
4226 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4227 req_complete_skb);
4228
4229 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4230 bt_dev_err(hdev,
4231 "unexpected event for opcode 0x%4.4x", *opcode);
4232 return;
4233 }
4234
4235 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4236 queue_work(hdev->workqueue, &hdev->cmd_work);
4237}
4238
4239static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4240{
4241 struct hci_cp_le_create_cis *cp;
4242 bool pending = false;
4243 int i;
4244
4245 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4246
4247 if (!status)
4248 return;
4249
4250 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4251 if (!cp)
4252 return;
4253
4254 hci_dev_lock(hdev);
4255
4256 /* Remove connection if command failed */
4257 for (i = 0; i < cp->num_cis; i++) {
4258 struct hci_conn *conn;
4259 u16 handle;
4260
4261 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4262
4263 conn = hci_conn_hash_lookup_handle(hdev, handle);
4264 if (conn) {
4265 if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4266 &conn->flags))
4267 pending = true;
4268 conn->state = BT_CLOSED;
4269 hci_connect_cfm(conn, status);
4270 hci_conn_del(conn);
4271 }
4272 }
4273 cp->num_cis = 0;
4274
4275 if (pending)
4276 hci_le_create_cis_pending(hdev);
4277
4278 hci_dev_unlock(hdev);
4279}
4280
4281#define HCI_CS(_op, _func) \
4282{ \
4283 .op = _op, \
4284 .func = _func, \
4285}
4286
4287static const struct hci_cs {
4288 u16 op;
4289 void (*func)(struct hci_dev *hdev, __u8 status);
4290} hci_cs_table[] = {
4291 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4292 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4293 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4294 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4295 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4296 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4297 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4298 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4299 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4300 hci_cs_read_remote_ext_features),
4301 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4302 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4303 hci_cs_enhanced_setup_sync_conn),
4304 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4305 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4306 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4307 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4308 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4309 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4310 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4311 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4312 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4313};
4314
4315static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4316 struct sk_buff *skb, u16 *opcode, u8 *status,
4317 hci_req_complete_t *req_complete,
4318 hci_req_complete_skb_t *req_complete_skb)
4319{
4320 struct hci_ev_cmd_status *ev = data;
4321 int i;
4322
4323 *opcode = __le16_to_cpu(ev->opcode);
4324 *status = ev->status;
4325
4326 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4327
4328 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4329 if (hci_cs_table[i].op == *opcode) {
4330 hci_cs_table[i].func(hdev, ev->status);
4331 break;
4332 }
4333 }
4334
4335 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4336
4337 /* Indicate request completion if the command failed. Also, if
4338 * we're not waiting for a special event and we get a success
4339 * command status we should try to flag the request as completed
4340 * (since for this kind of commands there will not be a command
4341 * complete event).
4342 */
4343 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) {
4344 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4345 req_complete_skb);
4346 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4347 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4348 *opcode);
4349 return;
4350 }
4351 }
4352
4353 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4354 queue_work(hdev->workqueue, &hdev->cmd_work);
4355}
4356
4357static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4358 struct sk_buff *skb)
4359{
4360 struct hci_ev_hardware_error *ev = data;
4361
4362 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4363
4364 hdev->hw_error_code = ev->code;
4365
4366 queue_work(hdev->req_workqueue, &hdev->error_reset);
4367}
4368
4369static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4370 struct sk_buff *skb)
4371{
4372 struct hci_ev_role_change *ev = data;
4373 struct hci_conn *conn;
4374
4375 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4376
4377 hci_dev_lock(hdev);
4378
4379 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4380 if (conn) {
4381 if (!ev->status)
4382 conn->role = ev->role;
4383
4384 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4385
4386 hci_role_switch_cfm(conn, ev->status, ev->role);
4387 }
4388
4389 hci_dev_unlock(hdev);
4390}
4391
4392static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4393 struct sk_buff *skb)
4394{
4395 struct hci_ev_num_comp_pkts *ev = data;
4396 int i;
4397
4398 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4399 flex_array_size(ev, handles, ev->num)))
4400 return;
4401
4402 bt_dev_dbg(hdev, "num %d", ev->num);
4403
4404 for (i = 0; i < ev->num; i++) {
4405 struct hci_comp_pkts_info *info = &ev->handles[i];
4406 struct hci_conn *conn;
4407 __u16 handle, count;
4408
4409 handle = __le16_to_cpu(info->handle);
4410 count = __le16_to_cpu(info->count);
4411
4412 conn = hci_conn_hash_lookup_handle(hdev, handle);
4413 if (!conn)
4414 continue;
4415
4416 conn->sent -= count;
4417
4418 switch (conn->type) {
4419 case ACL_LINK:
4420 hdev->acl_cnt += count;
4421 if (hdev->acl_cnt > hdev->acl_pkts)
4422 hdev->acl_cnt = hdev->acl_pkts;
4423 break;
4424
4425 case LE_LINK:
4426 if (hdev->le_pkts) {
4427 hdev->le_cnt += count;
4428 if (hdev->le_cnt > hdev->le_pkts)
4429 hdev->le_cnt = hdev->le_pkts;
4430 } else {
4431 hdev->acl_cnt += count;
4432 if (hdev->acl_cnt > hdev->acl_pkts)
4433 hdev->acl_cnt = hdev->acl_pkts;
4434 }
4435 break;
4436
4437 case SCO_LINK:
4438 hdev->sco_cnt += count;
4439 if (hdev->sco_cnt > hdev->sco_pkts)
4440 hdev->sco_cnt = hdev->sco_pkts;
4441 break;
4442
4443 case ISO_LINK:
4444 if (hdev->iso_pkts) {
4445 hdev->iso_cnt += count;
4446 if (hdev->iso_cnt > hdev->iso_pkts)
4447 hdev->iso_cnt = hdev->iso_pkts;
4448 } else if (hdev->le_pkts) {
4449 hdev->le_cnt += count;
4450 if (hdev->le_cnt > hdev->le_pkts)
4451 hdev->le_cnt = hdev->le_pkts;
4452 } else {
4453 hdev->acl_cnt += count;
4454 if (hdev->acl_cnt > hdev->acl_pkts)
4455 hdev->acl_cnt = hdev->acl_pkts;
4456 }
4457 break;
4458
4459 default:
4460 bt_dev_err(hdev, "unknown type %d conn %p",
4461 conn->type, conn);
4462 break;
4463 }
4464 }
4465
4466 queue_work(hdev->workqueue, &hdev->tx_work);
4467}
4468
4469static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4470 struct sk_buff *skb)
4471{
4472 struct hci_ev_mode_change *ev = data;
4473 struct hci_conn *conn;
4474
4475 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4476
4477 hci_dev_lock(hdev);
4478
4479 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4480 if (conn) {
4481 conn->mode = ev->mode;
4482
4483 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4484 &conn->flags)) {
4485 if (conn->mode == HCI_CM_ACTIVE)
4486 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4487 else
4488 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4489 }
4490
4491 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4492 hci_sco_setup(conn, ev->status);
4493 }
4494
4495 hci_dev_unlock(hdev);
4496}
4497
4498static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4499 struct sk_buff *skb)
4500{
4501 struct hci_ev_pin_code_req *ev = data;
4502 struct hci_conn *conn;
4503
4504 bt_dev_dbg(hdev, "");
4505
4506 hci_dev_lock(hdev);
4507
4508 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4509 if (!conn)
4510 goto unlock;
4511
4512 if (conn->state == BT_CONNECTED) {
4513 hci_conn_hold(conn);
4514 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4515 hci_conn_drop(conn);
4516 }
4517
4518 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4519 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4520 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4521 sizeof(ev->bdaddr), &ev->bdaddr);
4522 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4523 u8 secure;
4524
4525 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4526 secure = 1;
4527 else
4528 secure = 0;
4529
4530 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4531 }
4532
4533unlock:
4534 hci_dev_unlock(hdev);
4535}
4536
4537static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4538{
4539 if (key_type == HCI_LK_CHANGED_COMBINATION)
4540 return;
4541
4542 conn->pin_length = pin_len;
4543 conn->key_type = key_type;
4544
4545 switch (key_type) {
4546 case HCI_LK_LOCAL_UNIT:
4547 case HCI_LK_REMOTE_UNIT:
4548 case HCI_LK_DEBUG_COMBINATION:
4549 return;
4550 case HCI_LK_COMBINATION:
4551 if (pin_len == 16)
4552 conn->pending_sec_level = BT_SECURITY_HIGH;
4553 else
4554 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4555 break;
4556 case HCI_LK_UNAUTH_COMBINATION_P192:
4557 case HCI_LK_UNAUTH_COMBINATION_P256:
4558 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4559 break;
4560 case HCI_LK_AUTH_COMBINATION_P192:
4561 conn->pending_sec_level = BT_SECURITY_HIGH;
4562 break;
4563 case HCI_LK_AUTH_COMBINATION_P256:
4564 conn->pending_sec_level = BT_SECURITY_FIPS;
4565 break;
4566 }
4567}
4568
4569static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4570 struct sk_buff *skb)
4571{
4572 struct hci_ev_link_key_req *ev = data;
4573 struct hci_cp_link_key_reply cp;
4574 struct hci_conn *conn;
4575 struct link_key *key;
4576
4577 bt_dev_dbg(hdev, "");
4578
4579 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4580 return;
4581
4582 hci_dev_lock(hdev);
4583
4584 key = hci_find_link_key(hdev, &ev->bdaddr);
4585 if (!key) {
4586 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4587 goto not_found;
4588 }
4589
4590 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4591
4592 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4593 if (conn) {
4594 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4595
4596 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4597 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4598 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4599 bt_dev_dbg(hdev, "ignoring unauthenticated key");
4600 goto not_found;
4601 }
4602
4603 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4604 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4605 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4606 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4607 goto not_found;
4608 }
4609
4610 conn_set_key(conn, key->type, key->pin_len);
4611 }
4612
4613 bacpy(&cp.bdaddr, &ev->bdaddr);
4614 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4615
4616 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4617
4618 hci_dev_unlock(hdev);
4619
4620 return;
4621
4622not_found:
4623 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4624 hci_dev_unlock(hdev);
4625}
4626
4627static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4628 struct sk_buff *skb)
4629{
4630 struct hci_ev_link_key_notify *ev = data;
4631 struct hci_conn *conn;
4632 struct link_key *key;
4633 bool persistent;
4634 u8 pin_len = 0;
4635
4636 bt_dev_dbg(hdev, "");
4637
4638 hci_dev_lock(hdev);
4639
4640 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4641 if (!conn)
4642 goto unlock;
4643
4644 /* Ignore NULL link key against CVE-2020-26555 */
4645 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4646 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4647 &ev->bdaddr);
4648 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4649 hci_conn_drop(conn);
4650 goto unlock;
4651 }
4652
4653 hci_conn_hold(conn);
4654 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4655 hci_conn_drop(conn);
4656
4657 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4658 conn_set_key(conn, ev->key_type, conn->pin_length);
4659
4660 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4661 goto unlock;
4662
4663 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4664 ev->key_type, pin_len, &persistent);
4665 if (!key)
4666 goto unlock;
4667
4668 /* Update connection information since adding the key will have
4669 * fixed up the type in the case of changed combination keys.
4670 */
4671 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4672 conn_set_key(conn, key->type, key->pin_len);
4673
4674 mgmt_new_link_key(hdev, key, persistent);
4675
4676 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4677 * is set. If it's not set simply remove the key from the kernel
4678 * list (we've still notified user space about it but with
4679 * store_hint being 0).
4680 */
4681 if (key->type == HCI_LK_DEBUG_COMBINATION &&
4682 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4683 list_del_rcu(&key->list);
4684 kfree_rcu(key, rcu);
4685 goto unlock;
4686 }
4687
4688 if (persistent)
4689 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4690 else
4691 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4692
4693unlock:
4694 hci_dev_unlock(hdev);
4695}
4696
4697static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4698 struct sk_buff *skb)
4699{
4700 struct hci_ev_clock_offset *ev = data;
4701 struct hci_conn *conn;
4702
4703 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4704
4705 hci_dev_lock(hdev);
4706
4707 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4708 if (conn && !ev->status) {
4709 struct inquiry_entry *ie;
4710
4711 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4712 if (ie) {
4713 ie->data.clock_offset = ev->clock_offset;
4714 ie->timestamp = jiffies;
4715 }
4716 }
4717
4718 hci_dev_unlock(hdev);
4719}
4720
4721static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4722 struct sk_buff *skb)
4723{
4724 struct hci_ev_pkt_type_change *ev = data;
4725 struct hci_conn *conn;
4726
4727 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4728
4729 hci_dev_lock(hdev);
4730
4731 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4732 if (conn && !ev->status)
4733 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4734
4735 hci_dev_unlock(hdev);
4736}
4737
4738static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4739 struct sk_buff *skb)
4740{
4741 struct hci_ev_pscan_rep_mode *ev = data;
4742 struct inquiry_entry *ie;
4743
4744 bt_dev_dbg(hdev, "");
4745
4746 hci_dev_lock(hdev);
4747
4748 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4749 if (ie) {
4750 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4751 ie->timestamp = jiffies;
4752 }
4753
4754 hci_dev_unlock(hdev);
4755}
4756
4757static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4758 struct sk_buff *skb)
4759{
4760 struct hci_ev_inquiry_result_rssi *ev = edata;
4761 struct inquiry_data data;
4762 int i;
4763
4764 bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4765
4766 if (!ev->num)
4767 return;
4768
4769 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4770 return;
4771
4772 hci_dev_lock(hdev);
4773
4774 if (skb->len == array_size(ev->num,
4775 sizeof(struct inquiry_info_rssi_pscan))) {
4776 struct inquiry_info_rssi_pscan *info;
4777
4778 for (i = 0; i < ev->num; i++) {
4779 u32 flags;
4780
4781 info = hci_ev_skb_pull(hdev, skb,
4782 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4783 sizeof(*info));
4784 if (!info) {
4785 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4786 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4787 goto unlock;
4788 }
4789
4790 bacpy(&data.bdaddr, &info->bdaddr);
4791 data.pscan_rep_mode = info->pscan_rep_mode;
4792 data.pscan_period_mode = info->pscan_period_mode;
4793 data.pscan_mode = info->pscan_mode;
4794 memcpy(data.dev_class, info->dev_class, 3);
4795 data.clock_offset = info->clock_offset;
4796 data.rssi = info->rssi;
4797 data.ssp_mode = 0x00;
4798
4799 flags = hci_inquiry_cache_update(hdev, &data, false);
4800
4801 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4802 info->dev_class, info->rssi,
4803 flags, NULL, 0, NULL, 0, 0);
4804 }
4805 } else if (skb->len == array_size(ev->num,
4806 sizeof(struct inquiry_info_rssi))) {
4807 struct inquiry_info_rssi *info;
4808
4809 for (i = 0; i < ev->num; i++) {
4810 u32 flags;
4811
4812 info = hci_ev_skb_pull(hdev, skb,
4813 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4814 sizeof(*info));
4815 if (!info) {
4816 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4817 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4818 goto unlock;
4819 }
4820
4821 bacpy(&data.bdaddr, &info->bdaddr);
4822 data.pscan_rep_mode = info->pscan_rep_mode;
4823 data.pscan_period_mode = info->pscan_period_mode;
4824 data.pscan_mode = 0x00;
4825 memcpy(data.dev_class, info->dev_class, 3);
4826 data.clock_offset = info->clock_offset;
4827 data.rssi = info->rssi;
4828 data.ssp_mode = 0x00;
4829
4830 flags = hci_inquiry_cache_update(hdev, &data, false);
4831
4832 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4833 info->dev_class, info->rssi,
4834 flags, NULL, 0, NULL, 0, 0);
4835 }
4836 } else {
4837 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4838 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4839 }
4840unlock:
4841 hci_dev_unlock(hdev);
4842}
4843
4844static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4845 struct sk_buff *skb)
4846{
4847 struct hci_ev_remote_ext_features *ev = data;
4848 struct hci_conn *conn;
4849
4850 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4851
4852 hci_dev_lock(hdev);
4853
4854 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4855 if (!conn)
4856 goto unlock;
4857
4858 if (ev->page < HCI_MAX_PAGES)
4859 memcpy(conn->features[ev->page], ev->features, 8);
4860
4861 if (!ev->status && ev->page == 0x01) {
4862 struct inquiry_entry *ie;
4863
4864 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4865 if (ie)
4866 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4867
4868 if (ev->features[0] & LMP_HOST_SSP) {
4869 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4870 } else {
4871 /* It is mandatory by the Bluetooth specification that
4872 * Extended Inquiry Results are only used when Secure
4873 * Simple Pairing is enabled, but some devices violate
4874 * this.
4875 *
4876 * To make these devices work, the internal SSP
4877 * enabled flag needs to be cleared if the remote host
4878 * features do not indicate SSP support */
4879 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4880 }
4881
4882 if (ev->features[0] & LMP_HOST_SC)
4883 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4884 }
4885
4886 if (conn->state != BT_CONFIG)
4887 goto unlock;
4888
4889 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4890 struct hci_cp_remote_name_req cp;
4891 memset(&cp, 0, sizeof(cp));
4892 bacpy(&cp.bdaddr, &conn->dst);
4893 cp.pscan_rep_mode = 0x02;
4894 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4895 } else {
4896 mgmt_device_connected(hdev, conn, NULL, 0);
4897 }
4898
4899 if (!hci_outgoing_auth_needed(hdev, conn)) {
4900 conn->state = BT_CONNECTED;
4901 hci_connect_cfm(conn, ev->status);
4902 hci_conn_drop(conn);
4903 }
4904
4905unlock:
4906 hci_dev_unlock(hdev);
4907}
4908
4909static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
4910 struct sk_buff *skb)
4911{
4912 struct hci_ev_sync_conn_complete *ev = data;
4913 struct hci_conn *conn;
4914 u8 status = ev->status;
4915
4916 switch (ev->link_type) {
4917 case SCO_LINK:
4918 case ESCO_LINK:
4919 break;
4920 default:
4921 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
4922 * for HCI_Synchronous_Connection_Complete is limited to
4923 * either SCO or eSCO
4924 */
4925 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
4926 return;
4927 }
4928
4929 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4930
4931 hci_dev_lock(hdev);
4932
4933 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4934 if (!conn) {
4935 if (ev->link_type == ESCO_LINK)
4936 goto unlock;
4937
4938 /* When the link type in the event indicates SCO connection
4939 * and lookup of the connection object fails, then check
4940 * if an eSCO connection object exists.
4941 *
4942 * The core limits the synchronous connections to either
4943 * SCO or eSCO. The eSCO connection is preferred and tried
4944 * to be setup first and until successfully established,
4945 * the link type will be hinted as eSCO.
4946 */
4947 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4948 if (!conn)
4949 goto unlock;
4950 }
4951
4952 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
4953 * Processing it more than once per connection can corrupt kernel memory.
4954 *
4955 * As the connection handle is set here for the first time, it indicates
4956 * whether the connection is already set up.
4957 */
4958 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
4959 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
4960 goto unlock;
4961 }
4962
4963 switch (status) {
4964 case 0x00:
4965 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
4966 if (status) {
4967 conn->state = BT_CLOSED;
4968 break;
4969 }
4970
4971 conn->state = BT_CONNECTED;
4972 conn->type = ev->link_type;
4973
4974 hci_debugfs_create_conn(conn);
4975 hci_conn_add_sysfs(conn);
4976 break;
4977
4978 case 0x10: /* Connection Accept Timeout */
4979 case 0x0d: /* Connection Rejected due to Limited Resources */
4980 case 0x11: /* Unsupported Feature or Parameter Value */
4981 case 0x1c: /* SCO interval rejected */
4982 case 0x1a: /* Unsupported Remote Feature */
4983 case 0x1e: /* Invalid LMP Parameters */
4984 case 0x1f: /* Unspecified error */
4985 case 0x20: /* Unsupported LMP Parameter value */
4986 if (conn->out) {
4987 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
4988 (hdev->esco_type & EDR_ESCO_MASK);
4989 if (hci_setup_sync(conn, conn->parent->handle))
4990 goto unlock;
4991 }
4992 fallthrough;
4993
4994 default:
4995 conn->state = BT_CLOSED;
4996 break;
4997 }
4998
4999 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5000 /* Notify only in case of SCO over HCI transport data path which
5001 * is zero and non-zero value shall be non-HCI transport data path
5002 */
5003 if (conn->codec.data_path == 0 && hdev->notify) {
5004 switch (ev->air_mode) {
5005 case 0x02:
5006 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5007 break;
5008 case 0x03:
5009 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5010 break;
5011 }
5012 }
5013
5014 hci_connect_cfm(conn, status);
5015 if (status)
5016 hci_conn_del(conn);
5017
5018unlock:
5019 hci_dev_unlock(hdev);
5020}
5021
5022static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5023{
5024 size_t parsed = 0;
5025
5026 while (parsed < eir_len) {
5027 u8 field_len = eir[0];
5028
5029 if (field_len == 0)
5030 return parsed;
5031
5032 parsed += field_len + 1;
5033 eir += field_len + 1;
5034 }
5035
5036 return eir_len;
5037}
5038
5039static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5040 struct sk_buff *skb)
5041{
5042 struct hci_ev_ext_inquiry_result *ev = edata;
5043 struct inquiry_data data;
5044 size_t eir_len;
5045 int i;
5046
5047 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5048 flex_array_size(ev, info, ev->num)))
5049 return;
5050
5051 bt_dev_dbg(hdev, "num %d", ev->num);
5052
5053 if (!ev->num)
5054 return;
5055
5056 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5057 return;
5058
5059 hci_dev_lock(hdev);
5060
5061 for (i = 0; i < ev->num; i++) {
5062 struct extended_inquiry_info *info = &ev->info[i];
5063 u32 flags;
5064 bool name_known;
5065
5066 bacpy(&data.bdaddr, &info->bdaddr);
5067 data.pscan_rep_mode = info->pscan_rep_mode;
5068 data.pscan_period_mode = info->pscan_period_mode;
5069 data.pscan_mode = 0x00;
5070 memcpy(data.dev_class, info->dev_class, 3);
5071 data.clock_offset = info->clock_offset;
5072 data.rssi = info->rssi;
5073 data.ssp_mode = 0x01;
5074
5075 if (hci_dev_test_flag(hdev, HCI_MGMT))
5076 name_known = eir_get_data(info->data,
5077 sizeof(info->data),
5078 EIR_NAME_COMPLETE, NULL);
5079 else
5080 name_known = true;
5081
5082 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5083
5084 eir_len = eir_get_length(info->data, sizeof(info->data));
5085
5086 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5087 info->dev_class, info->rssi,
5088 flags, info->data, eir_len, NULL, 0, 0);
5089 }
5090
5091 hci_dev_unlock(hdev);
5092}
5093
5094static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5095 struct sk_buff *skb)
5096{
5097 struct hci_ev_key_refresh_complete *ev = data;
5098 struct hci_conn *conn;
5099
5100 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5101 __le16_to_cpu(ev->handle));
5102
5103 hci_dev_lock(hdev);
5104
5105 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5106 if (!conn)
5107 goto unlock;
5108
5109 /* For BR/EDR the necessary steps are taken through the
5110 * auth_complete event.
5111 */
5112 if (conn->type != LE_LINK)
5113 goto unlock;
5114
5115 if (!ev->status)
5116 conn->sec_level = conn->pending_sec_level;
5117
5118 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5119
5120 if (ev->status && conn->state == BT_CONNECTED) {
5121 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5122 hci_conn_drop(conn);
5123 goto unlock;
5124 }
5125
5126 if (conn->state == BT_CONFIG) {
5127 if (!ev->status)
5128 conn->state = BT_CONNECTED;
5129
5130 hci_connect_cfm(conn, ev->status);
5131 hci_conn_drop(conn);
5132 } else {
5133 hci_auth_cfm(conn, ev->status);
5134
5135 hci_conn_hold(conn);
5136 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5137 hci_conn_drop(conn);
5138 }
5139
5140unlock:
5141 hci_dev_unlock(hdev);
5142}
5143
5144static u8 hci_get_auth_req(struct hci_conn *conn)
5145{
5146 /* If remote requests no-bonding follow that lead */
5147 if (conn->remote_auth == HCI_AT_NO_BONDING ||
5148 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5149 return conn->remote_auth | (conn->auth_type & 0x01);
5150
5151 /* If both remote and local have enough IO capabilities, require
5152 * MITM protection
5153 */
5154 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5155 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5156 return conn->remote_auth | 0x01;
5157
5158 /* No MITM protection possible so ignore remote requirement */
5159 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5160}
5161
5162static u8 bredr_oob_data_present(struct hci_conn *conn)
5163{
5164 struct hci_dev *hdev = conn->hdev;
5165 struct oob_data *data;
5166
5167 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5168 if (!data)
5169 return 0x00;
5170
5171 if (bredr_sc_enabled(hdev)) {
5172 /* When Secure Connections is enabled, then just
5173 * return the present value stored with the OOB
5174 * data. The stored value contains the right present
5175 * information. However it can only be trusted when
5176 * not in Secure Connection Only mode.
5177 */
5178 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5179 return data->present;
5180
5181 /* When Secure Connections Only mode is enabled, then
5182 * the P-256 values are required. If they are not
5183 * available, then do not declare that OOB data is
5184 * present.
5185 */
5186 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5187 !crypto_memneq(data->hash256, ZERO_KEY, 16))
5188 return 0x00;
5189
5190 return 0x02;
5191 }
5192
5193 /* When Secure Connections is not enabled or actually
5194 * not supported by the hardware, then check that if
5195 * P-192 data values are present.
5196 */
5197 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5198 !crypto_memneq(data->hash192, ZERO_KEY, 16))
5199 return 0x00;
5200
5201 return 0x01;
5202}
5203
5204static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5205 struct sk_buff *skb)
5206{
5207 struct hci_ev_io_capa_request *ev = data;
5208 struct hci_conn *conn;
5209
5210 bt_dev_dbg(hdev, "");
5211
5212 hci_dev_lock(hdev);
5213
5214 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5215 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5216 goto unlock;
5217
5218 /* Assume remote supports SSP since it has triggered this event */
5219 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5220
5221 hci_conn_hold(conn);
5222
5223 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5224 goto unlock;
5225
5226 /* Allow pairing if we're pairable, the initiators of the
5227 * pairing or if the remote is not requesting bonding.
5228 */
5229 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5230 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5231 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5232 struct hci_cp_io_capability_reply cp;
5233
5234 bacpy(&cp.bdaddr, &ev->bdaddr);
5235 /* Change the IO capability from KeyboardDisplay
5236 * to DisplayYesNo as it is not supported by BT spec. */
5237 cp.capability = (conn->io_capability == 0x04) ?
5238 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5239
5240 /* If we are initiators, there is no remote information yet */
5241 if (conn->remote_auth == 0xff) {
5242 /* Request MITM protection if our IO caps allow it
5243 * except for the no-bonding case.
5244 */
5245 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5246 conn->auth_type != HCI_AT_NO_BONDING)
5247 conn->auth_type |= 0x01;
5248 } else {
5249 conn->auth_type = hci_get_auth_req(conn);
5250 }
5251
5252 /* If we're not bondable, force one of the non-bondable
5253 * authentication requirement values.
5254 */
5255 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5256 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5257
5258 cp.authentication = conn->auth_type;
5259 cp.oob_data = bredr_oob_data_present(conn);
5260
5261 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5262 sizeof(cp), &cp);
5263 } else {
5264 struct hci_cp_io_capability_neg_reply cp;
5265
5266 bacpy(&cp.bdaddr, &ev->bdaddr);
5267 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5268
5269 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5270 sizeof(cp), &cp);
5271 }
5272
5273unlock:
5274 hci_dev_unlock(hdev);
5275}
5276
5277static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5278 struct sk_buff *skb)
5279{
5280 struct hci_ev_io_capa_reply *ev = data;
5281 struct hci_conn *conn;
5282
5283 bt_dev_dbg(hdev, "");
5284
5285 hci_dev_lock(hdev);
5286
5287 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5288 if (!conn)
5289 goto unlock;
5290
5291 conn->remote_cap = ev->capability;
5292 conn->remote_auth = ev->authentication;
5293
5294unlock:
5295 hci_dev_unlock(hdev);
5296}
5297
5298static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5299 struct sk_buff *skb)
5300{
5301 struct hci_ev_user_confirm_req *ev = data;
5302 int loc_mitm, rem_mitm, confirm_hint = 0;
5303 struct hci_conn *conn;
5304
5305 bt_dev_dbg(hdev, "");
5306
5307 hci_dev_lock(hdev);
5308
5309 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5310 goto unlock;
5311
5312 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5313 if (!conn)
5314 goto unlock;
5315
5316 loc_mitm = (conn->auth_type & 0x01);
5317 rem_mitm = (conn->remote_auth & 0x01);
5318
5319 /* If we require MITM but the remote device can't provide that
5320 * (it has NoInputNoOutput) then reject the confirmation
5321 * request. We check the security level here since it doesn't
5322 * necessarily match conn->auth_type.
5323 */
5324 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5325 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5326 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5327 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5328 sizeof(ev->bdaddr), &ev->bdaddr);
5329 goto unlock;
5330 }
5331
5332 /* If no side requires MITM protection; use JUST_CFM method */
5333 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5334 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5335
5336 /* If we're not the initiator of request authorization and the
5337 * local IO capability is not NoInputNoOutput, use JUST_WORKS
5338 * method (mgmt_user_confirm with confirm_hint set to 1).
5339 */
5340 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5341 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) {
5342 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5343 confirm_hint = 1;
5344 goto confirm;
5345 }
5346
5347 /* If there already exists link key in local host, leave the
5348 * decision to user space since the remote device could be
5349 * legitimate or malicious.
5350 */
5351 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5352 bt_dev_dbg(hdev, "Local host already has link key");
5353 confirm_hint = 1;
5354 goto confirm;
5355 }
5356
5357 BT_DBG("Auto-accept of user confirmation with %ums delay",
5358 hdev->auto_accept_delay);
5359
5360 if (hdev->auto_accept_delay > 0) {
5361 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5362 queue_delayed_work(conn->hdev->workqueue,
5363 &conn->auto_accept_work, delay);
5364 goto unlock;
5365 }
5366
5367 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5368 sizeof(ev->bdaddr), &ev->bdaddr);
5369 goto unlock;
5370 }
5371
5372confirm:
5373 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5374 le32_to_cpu(ev->passkey), confirm_hint);
5375
5376unlock:
5377 hci_dev_unlock(hdev);
5378}
5379
5380static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5381 struct sk_buff *skb)
5382{
5383 struct hci_ev_user_passkey_req *ev = data;
5384
5385 bt_dev_dbg(hdev, "");
5386
5387 if (hci_dev_test_flag(hdev, HCI_MGMT))
5388 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5389}
5390
5391static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5392 struct sk_buff *skb)
5393{
5394 struct hci_ev_user_passkey_notify *ev = data;
5395 struct hci_conn *conn;
5396
5397 bt_dev_dbg(hdev, "");
5398
5399 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5400 if (!conn)
5401 return;
5402
5403 conn->passkey_notify = __le32_to_cpu(ev->passkey);
5404 conn->passkey_entered = 0;
5405
5406 if (hci_dev_test_flag(hdev, HCI_MGMT))
5407 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5408 conn->dst_type, conn->passkey_notify,
5409 conn->passkey_entered);
5410}
5411
5412static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5413 struct sk_buff *skb)
5414{
5415 struct hci_ev_keypress_notify *ev = data;
5416 struct hci_conn *conn;
5417
5418 bt_dev_dbg(hdev, "");
5419
5420 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5421 if (!conn)
5422 return;
5423
5424 switch (ev->type) {
5425 case HCI_KEYPRESS_STARTED:
5426 conn->passkey_entered = 0;
5427 return;
5428
5429 case HCI_KEYPRESS_ENTERED:
5430 conn->passkey_entered++;
5431 break;
5432
5433 case HCI_KEYPRESS_ERASED:
5434 conn->passkey_entered--;
5435 break;
5436
5437 case HCI_KEYPRESS_CLEARED:
5438 conn->passkey_entered = 0;
5439 break;
5440
5441 case HCI_KEYPRESS_COMPLETED:
5442 return;
5443 }
5444
5445 if (hci_dev_test_flag(hdev, HCI_MGMT))
5446 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5447 conn->dst_type, conn->passkey_notify,
5448 conn->passkey_entered);
5449}
5450
5451static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5452 struct sk_buff *skb)
5453{
5454 struct hci_ev_simple_pair_complete *ev = data;
5455 struct hci_conn *conn;
5456
5457 bt_dev_dbg(hdev, "");
5458
5459 hci_dev_lock(hdev);
5460
5461 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5462 if (!conn || !hci_conn_ssp_enabled(conn))
5463 goto unlock;
5464
5465 /* Reset the authentication requirement to unknown */
5466 conn->remote_auth = 0xff;
5467
5468 /* To avoid duplicate auth_failed events to user space we check
5469 * the HCI_CONN_AUTH_PEND flag which will be set if we
5470 * initiated the authentication. A traditional auth_complete
5471 * event gets always produced as initiator and is also mapped to
5472 * the mgmt_auth_failed event */
5473 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5474 mgmt_auth_failed(conn, ev->status);
5475
5476 hci_conn_drop(conn);
5477
5478unlock:
5479 hci_dev_unlock(hdev);
5480}
5481
5482static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5483 struct sk_buff *skb)
5484{
5485 struct hci_ev_remote_host_features *ev = data;
5486 struct inquiry_entry *ie;
5487 struct hci_conn *conn;
5488
5489 bt_dev_dbg(hdev, "");
5490
5491 hci_dev_lock(hdev);
5492
5493 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5494 if (conn)
5495 memcpy(conn->features[1], ev->features, 8);
5496
5497 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5498 if (ie)
5499 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5500
5501 hci_dev_unlock(hdev);
5502}
5503
5504static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5505 struct sk_buff *skb)
5506{
5507 struct hci_ev_remote_oob_data_request *ev = edata;
5508 struct oob_data *data;
5509
5510 bt_dev_dbg(hdev, "");
5511
5512 hci_dev_lock(hdev);
5513
5514 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5515 goto unlock;
5516
5517 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5518 if (!data) {
5519 struct hci_cp_remote_oob_data_neg_reply cp;
5520
5521 bacpy(&cp.bdaddr, &ev->bdaddr);
5522 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5523 sizeof(cp), &cp);
5524 goto unlock;
5525 }
5526
5527 if (bredr_sc_enabled(hdev)) {
5528 struct hci_cp_remote_oob_ext_data_reply cp;
5529
5530 bacpy(&cp.bdaddr, &ev->bdaddr);
5531 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5532 memset(cp.hash192, 0, sizeof(cp.hash192));
5533 memset(cp.rand192, 0, sizeof(cp.rand192));
5534 } else {
5535 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5536 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5537 }
5538 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5539 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5540
5541 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5542 sizeof(cp), &cp);
5543 } else {
5544 struct hci_cp_remote_oob_data_reply cp;
5545
5546 bacpy(&cp.bdaddr, &ev->bdaddr);
5547 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5548 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5549
5550 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5551 sizeof(cp), &cp);
5552 }
5553
5554unlock:
5555 hci_dev_unlock(hdev);
5556}
5557
5558static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5559 u8 bdaddr_type, bdaddr_t *local_rpa)
5560{
5561 if (conn->out) {
5562 conn->dst_type = bdaddr_type;
5563 conn->resp_addr_type = bdaddr_type;
5564 bacpy(&conn->resp_addr, bdaddr);
5565
5566 /* Check if the controller has set a Local RPA then it must be
5567 * used instead or hdev->rpa.
5568 */
5569 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5570 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5571 bacpy(&conn->init_addr, local_rpa);
5572 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5573 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5574 bacpy(&conn->init_addr, &conn->hdev->rpa);
5575 } else {
5576 hci_copy_identity_address(conn->hdev, &conn->init_addr,
5577 &conn->init_addr_type);
5578 }
5579 } else {
5580 conn->resp_addr_type = conn->hdev->adv_addr_type;
5581 /* Check if the controller has set a Local RPA then it must be
5582 * used instead or hdev->rpa.
5583 */
5584 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5585 conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5586 bacpy(&conn->resp_addr, local_rpa);
5587 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5588 /* In case of ext adv, resp_addr will be updated in
5589 * Adv Terminated event.
5590 */
5591 if (!ext_adv_capable(conn->hdev))
5592 bacpy(&conn->resp_addr,
5593 &conn->hdev->random_addr);
5594 } else {
5595 bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5596 }
5597
5598 conn->init_addr_type = bdaddr_type;
5599 bacpy(&conn->init_addr, bdaddr);
5600
5601 /* For incoming connections, set the default minimum
5602 * and maximum connection interval. They will be used
5603 * to check if the parameters are in range and if not
5604 * trigger the connection update procedure.
5605 */
5606 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5607 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5608 }
5609}
5610
5611static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5612 bdaddr_t *bdaddr, u8 bdaddr_type,
5613 bdaddr_t *local_rpa, u8 role, u16 handle,
5614 u16 interval, u16 latency,
5615 u16 supervision_timeout)
5616{
5617 struct hci_conn_params *params;
5618 struct hci_conn *conn;
5619 struct smp_irk *irk;
5620 u8 addr_type;
5621
5622 hci_dev_lock(hdev);
5623
5624 /* All controllers implicitly stop advertising in the event of a
5625 * connection, so ensure that the state bit is cleared.
5626 */
5627 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5628
5629 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5630 if (!conn) {
5631 /* In case of error status and there is no connection pending
5632 * just unlock as there is nothing to cleanup.
5633 */
5634 if (status)
5635 goto unlock;
5636
5637 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
5638 if (IS_ERR(conn)) {
5639 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn));
5640 goto unlock;
5641 }
5642
5643 conn->dst_type = bdaddr_type;
5644
5645 /* If we didn't have a hci_conn object previously
5646 * but we're in central role this must be something
5647 * initiated using an accept list. Since accept list based
5648 * connections are not "first class citizens" we don't
5649 * have full tracking of them. Therefore, we go ahead
5650 * with a "best effort" approach of determining the
5651 * initiator address based on the HCI_PRIVACY flag.
5652 */
5653 if (conn->out) {
5654 conn->resp_addr_type = bdaddr_type;
5655 bacpy(&conn->resp_addr, bdaddr);
5656 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5657 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5658 bacpy(&conn->init_addr, &hdev->rpa);
5659 } else {
5660 hci_copy_identity_address(hdev,
5661 &conn->init_addr,
5662 &conn->init_addr_type);
5663 }
5664 }
5665 } else {
5666 cancel_delayed_work(&conn->le_conn_timeout);
5667 }
5668
5669 /* The HCI_LE_Connection_Complete event is only sent once per connection.
5670 * Processing it more than once per connection can corrupt kernel memory.
5671 *
5672 * As the connection handle is set here for the first time, it indicates
5673 * whether the connection is already set up.
5674 */
5675 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5676 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5677 goto unlock;
5678 }
5679
5680 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5681
5682 /* Lookup the identity address from the stored connection
5683 * address and address type.
5684 *
5685 * When establishing connections to an identity address, the
5686 * connection procedure will store the resolvable random
5687 * address first. Now if it can be converted back into the
5688 * identity address, start using the identity address from
5689 * now on.
5690 */
5691 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5692 if (irk) {
5693 bacpy(&conn->dst, &irk->bdaddr);
5694 conn->dst_type = irk->addr_type;
5695 }
5696
5697 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5698
5699 /* All connection failure handling is taken care of by the
5700 * hci_conn_failed function which is triggered by the HCI
5701 * request completion callbacks used for connecting.
5702 */
5703 if (status || hci_conn_set_handle(conn, handle))
5704 goto unlock;
5705
5706 /* Drop the connection if it has been aborted */
5707 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5708 hci_conn_drop(conn);
5709 goto unlock;
5710 }
5711
5712 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5713 addr_type = BDADDR_LE_PUBLIC;
5714 else
5715 addr_type = BDADDR_LE_RANDOM;
5716
5717 /* Drop the connection if the device is blocked */
5718 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5719 hci_conn_drop(conn);
5720 goto unlock;
5721 }
5722
5723 mgmt_device_connected(hdev, conn, NULL, 0);
5724
5725 conn->sec_level = BT_SECURITY_LOW;
5726 conn->state = BT_CONFIG;
5727
5728 /* Store current advertising instance as connection advertising instance
5729 * when sotfware rotation is in use so it can be re-enabled when
5730 * disconnected.
5731 */
5732 if (!ext_adv_capable(hdev))
5733 conn->adv_instance = hdev->cur_adv_instance;
5734
5735 conn->le_conn_interval = interval;
5736 conn->le_conn_latency = latency;
5737 conn->le_supv_timeout = supervision_timeout;
5738
5739 hci_debugfs_create_conn(conn);
5740 hci_conn_add_sysfs(conn);
5741
5742 /* The remote features procedure is defined for central
5743 * role only. So only in case of an initiated connection
5744 * request the remote features.
5745 *
5746 * If the local controller supports peripheral-initiated features
5747 * exchange, then requesting the remote features in peripheral
5748 * role is possible. Otherwise just transition into the
5749 * connected state without requesting the remote features.
5750 */
5751 if (conn->out ||
5752 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5753 struct hci_cp_le_read_remote_features cp;
5754
5755 cp.handle = __cpu_to_le16(conn->handle);
5756
5757 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5758 sizeof(cp), &cp);
5759
5760 hci_conn_hold(conn);
5761 } else {
5762 conn->state = BT_CONNECTED;
5763 hci_connect_cfm(conn, status);
5764 }
5765
5766 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5767 conn->dst_type);
5768 if (params) {
5769 hci_pend_le_list_del_init(params);
5770 if (params->conn) {
5771 hci_conn_drop(params->conn);
5772 hci_conn_put(params->conn);
5773 params->conn = NULL;
5774 }
5775 }
5776
5777unlock:
5778 hci_update_passive_scan(hdev);
5779 hci_dev_unlock(hdev);
5780}
5781
5782static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
5783 struct sk_buff *skb)
5784{
5785 struct hci_ev_le_conn_complete *ev = data;
5786
5787 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5788
5789 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5790 NULL, ev->role, le16_to_cpu(ev->handle),
5791 le16_to_cpu(ev->interval),
5792 le16_to_cpu(ev->latency),
5793 le16_to_cpu(ev->supervision_timeout));
5794}
5795
5796static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
5797 struct sk_buff *skb)
5798{
5799 struct hci_ev_le_enh_conn_complete *ev = data;
5800
5801 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5802
5803 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5804 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
5805 le16_to_cpu(ev->interval),
5806 le16_to_cpu(ev->latency),
5807 le16_to_cpu(ev->supervision_timeout));
5808}
5809
5810static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
5811 struct sk_buff *skb)
5812{
5813 struct hci_evt_le_ext_adv_set_term *ev = data;
5814 struct hci_conn *conn;
5815 struct adv_info *adv, *n;
5816
5817 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5818
5819 /* The Bluetooth Core 5.3 specification clearly states that this event
5820 * shall not be sent when the Host disables the advertising set. So in
5821 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
5822 *
5823 * When the Host disables an advertising set, all cleanup is done via
5824 * its command callback and not needed to be duplicated here.
5825 */
5826 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
5827 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
5828 return;
5829 }
5830
5831 hci_dev_lock(hdev);
5832
5833 adv = hci_find_adv_instance(hdev, ev->handle);
5834
5835 if (ev->status) {
5836 if (!adv)
5837 goto unlock;
5838
5839 /* Remove advertising as it has been terminated */
5840 hci_remove_adv_instance(hdev, ev->handle);
5841 mgmt_advertising_removed(NULL, hdev, ev->handle);
5842
5843 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
5844 if (adv->enabled)
5845 goto unlock;
5846 }
5847
5848 /* We are no longer advertising, clear HCI_LE_ADV */
5849 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5850 goto unlock;
5851 }
5852
5853 if (adv)
5854 adv->enabled = false;
5855
5856 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
5857 if (conn) {
5858 /* Store handle in the connection so the correct advertising
5859 * instance can be re-enabled when disconnected.
5860 */
5861 conn->adv_instance = ev->handle;
5862
5863 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
5864 bacmp(&conn->resp_addr, BDADDR_ANY))
5865 goto unlock;
5866
5867 if (!ev->handle) {
5868 bacpy(&conn->resp_addr, &hdev->random_addr);
5869 goto unlock;
5870 }
5871
5872 if (adv)
5873 bacpy(&conn->resp_addr, &adv->random_addr);
5874 }
5875
5876unlock:
5877 hci_dev_unlock(hdev);
5878}
5879
5880static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
5881 struct sk_buff *skb)
5882{
5883 struct hci_ev_le_conn_update_complete *ev = data;
5884 struct hci_conn *conn;
5885
5886 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5887
5888 if (ev->status)
5889 return;
5890
5891 hci_dev_lock(hdev);
5892
5893 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5894 if (conn) {
5895 conn->le_conn_interval = le16_to_cpu(ev->interval);
5896 conn->le_conn_latency = le16_to_cpu(ev->latency);
5897 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
5898 }
5899
5900 hci_dev_unlock(hdev);
5901}
5902
5903/* This function requires the caller holds hdev->lock */
5904static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
5905 bdaddr_t *addr,
5906 u8 addr_type, bool addr_resolved,
5907 u8 adv_type, u8 phy, u8 sec_phy)
5908{
5909 struct hci_conn *conn;
5910 struct hci_conn_params *params;
5911
5912 /* If the event is not connectable don't proceed further */
5913 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
5914 return NULL;
5915
5916 /* Ignore if the device is blocked or hdev is suspended */
5917 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
5918 hdev->suspended)
5919 return NULL;
5920
5921 /* Most controller will fail if we try to create new connections
5922 * while we have an existing one in peripheral role.
5923 */
5924 if (hdev->conn_hash.le_num_peripheral > 0 &&
5925 (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) ||
5926 !(hdev->le_states[3] & 0x10)))
5927 return NULL;
5928
5929 /* If we're not connectable only connect devices that we have in
5930 * our pend_le_conns list.
5931 */
5932 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
5933 addr_type);
5934 if (!params)
5935 return NULL;
5936
5937 if (!params->explicit_connect) {
5938 switch (params->auto_connect) {
5939 case HCI_AUTO_CONN_DIRECT:
5940 /* Only devices advertising with ADV_DIRECT_IND are
5941 * triggering a connection attempt. This is allowing
5942 * incoming connections from peripheral devices.
5943 */
5944 if (adv_type != LE_ADV_DIRECT_IND)
5945 return NULL;
5946 break;
5947 case HCI_AUTO_CONN_ALWAYS:
5948 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
5949 * are triggering a connection attempt. This means
5950 * that incoming connections from peripheral device are
5951 * accepted and also outgoing connections to peripheral
5952 * devices are established when found.
5953 */
5954 break;
5955 default:
5956 return NULL;
5957 }
5958 }
5959
5960 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
5961 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
5962 HCI_ROLE_MASTER, phy, sec_phy);
5963 if (!IS_ERR(conn)) {
5964 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
5965 * by higher layer that tried to connect, if no then
5966 * store the pointer since we don't really have any
5967 * other owner of the object besides the params that
5968 * triggered it. This way we can abort the connection if
5969 * the parameters get removed and keep the reference
5970 * count consistent once the connection is established.
5971 */
5972
5973 if (!params->explicit_connect)
5974 params->conn = hci_conn_get(conn);
5975
5976 return conn;
5977 }
5978
5979 switch (PTR_ERR(conn)) {
5980 case -EBUSY:
5981 /* If hci_connect() returns -EBUSY it means there is already
5982 * an LE connection attempt going on. Since controllers don't
5983 * support more than one connection attempt at the time, we
5984 * don't consider this an error case.
5985 */
5986 break;
5987 default:
5988 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
5989 return NULL;
5990 }
5991
5992 return NULL;
5993}
5994
5995static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
5996 u8 bdaddr_type, bdaddr_t *direct_addr,
5997 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi,
5998 u8 *data, u8 len, bool ext_adv, bool ctl_time,
5999 u64 instant)
6000{
6001 struct discovery_state *d = &hdev->discovery;
6002 struct smp_irk *irk;
6003 struct hci_conn *conn;
6004 bool match, bdaddr_resolved;
6005 u32 flags;
6006 u8 *ptr;
6007
6008 switch (type) {
6009 case LE_ADV_IND:
6010 case LE_ADV_DIRECT_IND:
6011 case LE_ADV_SCAN_IND:
6012 case LE_ADV_NONCONN_IND:
6013 case LE_ADV_SCAN_RSP:
6014 break;
6015 default:
6016 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6017 "type: 0x%02x", type);
6018 return;
6019 }
6020
6021 if (len > max_adv_len(hdev)) {
6022 bt_dev_err_ratelimited(hdev,
6023 "adv larger than maximum supported");
6024 return;
6025 }
6026
6027 /* Find the end of the data in case the report contains padded zero
6028 * bytes at the end causing an invalid length value.
6029 *
6030 * When data is NULL, len is 0 so there is no need for extra ptr
6031 * check as 'ptr < data + 0' is already false in such case.
6032 */
6033 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6034 if (ptr + 1 + *ptr > data + len)
6035 break;
6036 }
6037
6038 /* Adjust for actual length. This handles the case when remote
6039 * device is advertising with incorrect data length.
6040 */
6041 len = ptr - data;
6042
6043 /* If the direct address is present, then this report is from
6044 * a LE Direct Advertising Report event. In that case it is
6045 * important to see if the address is matching the local
6046 * controller address.
6047 */
6048 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6049 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6050 &bdaddr_resolved);
6051
6052 /* Only resolvable random addresses are valid for these
6053 * kind of reports and others can be ignored.
6054 */
6055 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6056 return;
6057
6058 /* If the controller is not using resolvable random
6059 * addresses, then this report can be ignored.
6060 */
6061 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6062 return;
6063
6064 /* If the local IRK of the controller does not match
6065 * with the resolvable random address provided, then
6066 * this report can be ignored.
6067 */
6068 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6069 return;
6070 }
6071
6072 /* Check if we need to convert to identity address */
6073 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6074 if (irk) {
6075 bdaddr = &irk->bdaddr;
6076 bdaddr_type = irk->addr_type;
6077 }
6078
6079 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6080
6081 /* Check if we have been requested to connect to this device.
6082 *
6083 * direct_addr is set only for directed advertising reports (it is NULL
6084 * for advertising reports) and is already verified to be RPA above.
6085 */
6086 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6087 type, phy, sec_phy);
6088 if (!ext_adv && conn && type == LE_ADV_IND &&
6089 len <= max_adv_len(hdev)) {
6090 /* Store report for later inclusion by
6091 * mgmt_device_connected
6092 */
6093 memcpy(conn->le_adv_data, data, len);
6094 conn->le_adv_data_len = len;
6095 }
6096
6097 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6098 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6099 else
6100 flags = 0;
6101
6102 /* All scan results should be sent up for Mesh systems */
6103 if (hci_dev_test_flag(hdev, HCI_MESH)) {
6104 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6105 rssi, flags, data, len, NULL, 0, instant);
6106 return;
6107 }
6108
6109 /* Passive scanning shouldn't trigger any device found events,
6110 * except for devices marked as CONN_REPORT for which we do send
6111 * device found events, or advertisement monitoring requested.
6112 */
6113 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6114 if (type == LE_ADV_DIRECT_IND)
6115 return;
6116
6117 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6118 bdaddr, bdaddr_type) &&
6119 idr_is_empty(&hdev->adv_monitors_idr))
6120 return;
6121
6122 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6123 rssi, flags, data, len, NULL, 0, 0);
6124 return;
6125 }
6126
6127 /* When receiving a scan response, then there is no way to
6128 * know if the remote device is connectable or not. However
6129 * since scan responses are merged with a previously seen
6130 * advertising report, the flags field from that report
6131 * will be used.
6132 *
6133 * In the unlikely case that a controller just sends a scan
6134 * response event that doesn't match the pending report, then
6135 * it is marked as a standalone SCAN_RSP.
6136 */
6137 if (type == LE_ADV_SCAN_RSP)
6138 flags = MGMT_DEV_FOUND_SCAN_RSP;
6139
6140 /* If there's nothing pending either store the data from this
6141 * event or send an immediate device found event if the data
6142 * should not be stored for later.
6143 */
6144 if (!ext_adv && !has_pending_adv_report(hdev)) {
6145 /* If the report will trigger a SCAN_REQ store it for
6146 * later merging.
6147 */
6148 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6149 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6150 rssi, flags, data, len);
6151 return;
6152 }
6153
6154 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6155 rssi, flags, data, len, NULL, 0, 0);
6156 return;
6157 }
6158
6159 /* Check if the pending report is for the same device as the new one */
6160 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6161 bdaddr_type == d->last_adv_addr_type);
6162
6163 /* If the pending data doesn't match this report or this isn't a
6164 * scan response (e.g. we got a duplicate ADV_IND) then force
6165 * sending of the pending data.
6166 */
6167 if (type != LE_ADV_SCAN_RSP || !match) {
6168 /* Send out whatever is in the cache, but skip duplicates */
6169 if (!match)
6170 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6171 d->last_adv_addr_type, NULL,
6172 d->last_adv_rssi, d->last_adv_flags,
6173 d->last_adv_data,
6174 d->last_adv_data_len, NULL, 0, 0);
6175
6176 /* If the new report will trigger a SCAN_REQ store it for
6177 * later merging.
6178 */
6179 if (!ext_adv && (type == LE_ADV_IND ||
6180 type == LE_ADV_SCAN_IND)) {
6181 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6182 rssi, flags, data, len);
6183 return;
6184 }
6185
6186 /* The advertising reports cannot be merged, so clear
6187 * the pending report and send out a device found event.
6188 */
6189 clear_pending_adv_report(hdev);
6190 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6191 rssi, flags, data, len, NULL, 0, 0);
6192 return;
6193 }
6194
6195 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6196 * the new event is a SCAN_RSP. We can therefore proceed with
6197 * sending a merged device found event.
6198 */
6199 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6200 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6201 d->last_adv_data, d->last_adv_data_len, data, len, 0);
6202 clear_pending_adv_report(hdev);
6203}
6204
6205static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6206 struct sk_buff *skb)
6207{
6208 struct hci_ev_le_advertising_report *ev = data;
6209 u64 instant = jiffies;
6210
6211 if (!ev->num)
6212 return;
6213
6214 hci_dev_lock(hdev);
6215
6216 while (ev->num--) {
6217 struct hci_ev_le_advertising_info *info;
6218 s8 rssi;
6219
6220 info = hci_le_ev_skb_pull(hdev, skb,
6221 HCI_EV_LE_ADVERTISING_REPORT,
6222 sizeof(*info));
6223 if (!info)
6224 break;
6225
6226 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6227 info->length + 1))
6228 break;
6229
6230 if (info->length <= max_adv_len(hdev)) {
6231 rssi = info->data[info->length];
6232 process_adv_report(hdev, info->type, &info->bdaddr,
6233 info->bdaddr_type, NULL, 0,
6234 HCI_ADV_PHY_1M, 0, rssi,
6235 info->data, info->length, false,
6236 false, instant);
6237 } else {
6238 bt_dev_err(hdev, "Dropping invalid advertising data");
6239 }
6240 }
6241
6242 hci_dev_unlock(hdev);
6243}
6244
6245static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6246{
6247 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6248 switch (evt_type) {
6249 case LE_LEGACY_ADV_IND:
6250 return LE_ADV_IND;
6251 case LE_LEGACY_ADV_DIRECT_IND:
6252 return LE_ADV_DIRECT_IND;
6253 case LE_LEGACY_ADV_SCAN_IND:
6254 return LE_ADV_SCAN_IND;
6255 case LE_LEGACY_NONCONN_IND:
6256 return LE_ADV_NONCONN_IND;
6257 case LE_LEGACY_SCAN_RSP_ADV:
6258 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6259 return LE_ADV_SCAN_RSP;
6260 }
6261
6262 goto invalid;
6263 }
6264
6265 if (evt_type & LE_EXT_ADV_CONN_IND) {
6266 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6267 return LE_ADV_DIRECT_IND;
6268
6269 return LE_ADV_IND;
6270 }
6271
6272 if (evt_type & LE_EXT_ADV_SCAN_RSP)
6273 return LE_ADV_SCAN_RSP;
6274
6275 if (evt_type & LE_EXT_ADV_SCAN_IND)
6276 return LE_ADV_SCAN_IND;
6277
6278 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6279 evt_type & LE_EXT_ADV_DIRECT_IND)
6280 return LE_ADV_NONCONN_IND;
6281
6282invalid:
6283 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6284 evt_type);
6285
6286 return LE_ADV_INVALID;
6287}
6288
6289static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6290 struct sk_buff *skb)
6291{
6292 struct hci_ev_le_ext_adv_report *ev = data;
6293 u64 instant = jiffies;
6294
6295 if (!ev->num)
6296 return;
6297
6298 hci_dev_lock(hdev);
6299
6300 while (ev->num--) {
6301 struct hci_ev_le_ext_adv_info *info;
6302 u8 legacy_evt_type;
6303 u16 evt_type;
6304
6305 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6306 sizeof(*info));
6307 if (!info)
6308 break;
6309
6310 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6311 info->length))
6312 break;
6313
6314 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6315 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6316
6317 if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY,
6318 &hdev->quirks)) {
6319 info->primary_phy &= 0x1f;
6320 info->secondary_phy &= 0x1f;
6321 }
6322
6323 if (legacy_evt_type != LE_ADV_INVALID) {
6324 process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6325 info->bdaddr_type, NULL, 0,
6326 info->primary_phy,
6327 info->secondary_phy,
6328 info->rssi, info->data, info->length,
6329 !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6330 false, instant);
6331 }
6332 }
6333
6334 hci_dev_unlock(hdev);
6335}
6336
6337static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6338{
6339 struct hci_cp_le_pa_term_sync cp;
6340
6341 memset(&cp, 0, sizeof(cp));
6342 cp.handle = handle;
6343
6344 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6345}
6346
6347static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6348 struct sk_buff *skb)
6349{
6350 struct hci_ev_le_pa_sync_established *ev = data;
6351 int mask = hdev->link_mode;
6352 __u8 flags = 0;
6353 struct hci_conn *pa_sync, *conn;
6354
6355 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6356
6357 hci_dev_lock(hdev);
6358
6359 hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6360
6361 conn = hci_conn_hash_lookup_sid(hdev, ev->sid, &ev->bdaddr,
6362 ev->bdaddr_type);
6363 if (!conn) {
6364 bt_dev_err(hdev,
6365 "Unable to find connection for dst %pMR sid 0x%2.2x",
6366 &ev->bdaddr, ev->sid);
6367 goto unlock;
6368 }
6369
6370 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags);
6371
6372 conn->sync_handle = le16_to_cpu(ev->handle);
6373 conn->sid = HCI_SID_INVALID;
6374
6375 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6376 if (!(mask & HCI_LM_ACCEPT)) {
6377 hci_le_pa_term_sync(hdev, ev->handle);
6378 goto unlock;
6379 }
6380
6381 if (!(flags & HCI_PROTO_DEFER))
6382 goto unlock;
6383
6384 /* Add connection to indicate PA sync event */
6385 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6386 HCI_ROLE_SLAVE);
6387
6388 if (IS_ERR(pa_sync))
6389 goto unlock;
6390
6391 pa_sync->sync_handle = le16_to_cpu(ev->handle);
6392
6393 if (ev->status) {
6394 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6395
6396 /* Notify iso layer */
6397 hci_connect_cfm(pa_sync, ev->status);
6398 }
6399
6400unlock:
6401 /* Handle any other pending PA sync command */
6402 hci_pa_create_sync_pending(hdev);
6403
6404 hci_dev_unlock(hdev);
6405}
6406
6407static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6408 struct sk_buff *skb)
6409{
6410 struct hci_ev_le_per_adv_report *ev = data;
6411 int mask = hdev->link_mode;
6412 __u8 flags = 0;
6413 struct hci_conn *pa_sync;
6414
6415 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6416
6417 hci_dev_lock(hdev);
6418
6419 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6420 if (!(mask & HCI_LM_ACCEPT))
6421 goto unlock;
6422
6423 if (!(flags & HCI_PROTO_DEFER))
6424 goto unlock;
6425
6426 pa_sync = hci_conn_hash_lookup_pa_sync_handle
6427 (hdev,
6428 le16_to_cpu(ev->sync_handle));
6429
6430 if (!pa_sync)
6431 goto unlock;
6432
6433 if (ev->data_status == LE_PA_DATA_COMPLETE &&
6434 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) {
6435 /* Notify iso layer */
6436 hci_connect_cfm(pa_sync, 0);
6437
6438 /* Notify MGMT layer */
6439 mgmt_device_connected(hdev, pa_sync, NULL, 0);
6440 }
6441
6442unlock:
6443 hci_dev_unlock(hdev);
6444}
6445
6446static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6447 struct sk_buff *skb)
6448{
6449 struct hci_ev_le_remote_feat_complete *ev = data;
6450 struct hci_conn *conn;
6451
6452 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6453
6454 hci_dev_lock(hdev);
6455
6456 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6457 if (conn) {
6458 if (!ev->status)
6459 memcpy(conn->features[0], ev->features, 8);
6460
6461 if (conn->state == BT_CONFIG) {
6462 __u8 status;
6463
6464 /* If the local controller supports peripheral-initiated
6465 * features exchange, but the remote controller does
6466 * not, then it is possible that the error code 0x1a
6467 * for unsupported remote feature gets returned.
6468 *
6469 * In this specific case, allow the connection to
6470 * transition into connected state and mark it as
6471 * successful.
6472 */
6473 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE &&
6474 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6475 status = 0x00;
6476 else
6477 status = ev->status;
6478
6479 conn->state = BT_CONNECTED;
6480 hci_connect_cfm(conn, status);
6481 hci_conn_drop(conn);
6482 }
6483 }
6484
6485 hci_dev_unlock(hdev);
6486}
6487
6488static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6489 struct sk_buff *skb)
6490{
6491 struct hci_ev_le_ltk_req *ev = data;
6492 struct hci_cp_le_ltk_reply cp;
6493 struct hci_cp_le_ltk_neg_reply neg;
6494 struct hci_conn *conn;
6495 struct smp_ltk *ltk;
6496
6497 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6498
6499 hci_dev_lock(hdev);
6500
6501 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6502 if (conn == NULL)
6503 goto not_found;
6504
6505 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6506 if (!ltk)
6507 goto not_found;
6508
6509 if (smp_ltk_is_sc(ltk)) {
6510 /* With SC both EDiv and Rand are set to zero */
6511 if (ev->ediv || ev->rand)
6512 goto not_found;
6513 } else {
6514 /* For non-SC keys check that EDiv and Rand match */
6515 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6516 goto not_found;
6517 }
6518
6519 memcpy(cp.ltk, ltk->val, ltk->enc_size);
6520 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6521 cp.handle = cpu_to_le16(conn->handle);
6522
6523 conn->pending_sec_level = smp_ltk_sec_level(ltk);
6524
6525 conn->enc_key_size = ltk->enc_size;
6526
6527 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6528
6529 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6530 * temporary key used to encrypt a connection following
6531 * pairing. It is used during the Encrypted Session Setup to
6532 * distribute the keys. Later, security can be re-established
6533 * using a distributed LTK.
6534 */
6535 if (ltk->type == SMP_STK) {
6536 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6537 list_del_rcu(<k->list);
6538 kfree_rcu(ltk, rcu);
6539 } else {
6540 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6541 }
6542
6543 hci_dev_unlock(hdev);
6544
6545 return;
6546
6547not_found:
6548 neg.handle = ev->handle;
6549 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6550 hci_dev_unlock(hdev);
6551}
6552
6553static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6554 u8 reason)
6555{
6556 struct hci_cp_le_conn_param_req_neg_reply cp;
6557
6558 cp.handle = cpu_to_le16(handle);
6559 cp.reason = reason;
6560
6561 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6562 &cp);
6563}
6564
6565static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6566 struct sk_buff *skb)
6567{
6568 struct hci_ev_le_remote_conn_param_req *ev = data;
6569 struct hci_cp_le_conn_param_req_reply cp;
6570 struct hci_conn *hcon;
6571 u16 handle, min, max, latency, timeout;
6572
6573 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6574
6575 handle = le16_to_cpu(ev->handle);
6576 min = le16_to_cpu(ev->interval_min);
6577 max = le16_to_cpu(ev->interval_max);
6578 latency = le16_to_cpu(ev->latency);
6579 timeout = le16_to_cpu(ev->timeout);
6580
6581 hcon = hci_conn_hash_lookup_handle(hdev, handle);
6582 if (!hcon || hcon->state != BT_CONNECTED)
6583 return send_conn_param_neg_reply(hdev, handle,
6584 HCI_ERROR_UNKNOWN_CONN_ID);
6585
6586 if (max > hcon->le_conn_max_interval)
6587 return send_conn_param_neg_reply(hdev, handle,
6588 HCI_ERROR_INVALID_LL_PARAMS);
6589
6590 if (hci_check_conn_params(min, max, latency, timeout))
6591 return send_conn_param_neg_reply(hdev, handle,
6592 HCI_ERROR_INVALID_LL_PARAMS);
6593
6594 if (hcon->role == HCI_ROLE_MASTER) {
6595 struct hci_conn_params *params;
6596 u8 store_hint;
6597
6598 hci_dev_lock(hdev);
6599
6600 params = hci_conn_params_lookup(hdev, &hcon->dst,
6601 hcon->dst_type);
6602 if (params) {
6603 params->conn_min_interval = min;
6604 params->conn_max_interval = max;
6605 params->conn_latency = latency;
6606 params->supervision_timeout = timeout;
6607 store_hint = 0x01;
6608 } else {
6609 store_hint = 0x00;
6610 }
6611
6612 hci_dev_unlock(hdev);
6613
6614 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6615 store_hint, min, max, latency, timeout);
6616 }
6617
6618 cp.handle = ev->handle;
6619 cp.interval_min = ev->interval_min;
6620 cp.interval_max = ev->interval_max;
6621 cp.latency = ev->latency;
6622 cp.timeout = ev->timeout;
6623 cp.min_ce_len = 0;
6624 cp.max_ce_len = 0;
6625
6626 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6627}
6628
6629static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6630 struct sk_buff *skb)
6631{
6632 struct hci_ev_le_direct_adv_report *ev = data;
6633 u64 instant = jiffies;
6634 int i;
6635
6636 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6637 flex_array_size(ev, info, ev->num)))
6638 return;
6639
6640 if (!ev->num)
6641 return;
6642
6643 hci_dev_lock(hdev);
6644
6645 for (i = 0; i < ev->num; i++) {
6646 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6647
6648 process_adv_report(hdev, info->type, &info->bdaddr,
6649 info->bdaddr_type, &info->direct_addr,
6650 info->direct_addr_type, HCI_ADV_PHY_1M, 0,
6651 info->rssi, NULL, 0, false, false, instant);
6652 }
6653
6654 hci_dev_unlock(hdev);
6655}
6656
6657static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6658 struct sk_buff *skb)
6659{
6660 struct hci_ev_le_phy_update_complete *ev = data;
6661 struct hci_conn *conn;
6662
6663 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6664
6665 if (ev->status)
6666 return;
6667
6668 hci_dev_lock(hdev);
6669
6670 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6671 if (!conn)
6672 goto unlock;
6673
6674 conn->le_tx_phy = ev->tx_phy;
6675 conn->le_rx_phy = ev->rx_phy;
6676
6677unlock:
6678 hci_dev_unlock(hdev);
6679}
6680
6681static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6682 struct sk_buff *skb)
6683{
6684 struct hci_evt_le_cis_established *ev = data;
6685 struct hci_conn *conn;
6686 struct bt_iso_qos *qos;
6687 bool pending = false;
6688 u16 handle = __le16_to_cpu(ev->handle);
6689 u32 c_sdu_interval, p_sdu_interval;
6690
6691 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6692
6693 hci_dev_lock(hdev);
6694
6695 conn = hci_conn_hash_lookup_handle(hdev, handle);
6696 if (!conn) {
6697 bt_dev_err(hdev,
6698 "Unable to find connection with handle 0x%4.4x",
6699 handle);
6700 goto unlock;
6701 }
6702
6703 if (conn->type != ISO_LINK) {
6704 bt_dev_err(hdev,
6705 "Invalid connection link type handle 0x%4.4x",
6706 handle);
6707 goto unlock;
6708 }
6709
6710 qos = &conn->iso_qos;
6711
6712 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
6713
6714 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G
6715 * page 3075:
6716 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) ×
6717 * ISO_Interval + SDU_Interval_C_To_P
6718 * ...
6719 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) -
6720 * Transport_Latency
6721 */
6722 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) +
6723 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) -
6724 get_unaligned_le24(ev->c_latency);
6725 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) +
6726 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) -
6727 get_unaligned_le24(ev->p_latency);
6728
6729 switch (conn->role) {
6730 case HCI_ROLE_SLAVE:
6731 qos->ucast.in.interval = c_sdu_interval;
6732 qos->ucast.out.interval = p_sdu_interval;
6733 /* Convert Transport Latency (us) to Latency (msec) */
6734 qos->ucast.in.latency =
6735 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6736 1000);
6737 qos->ucast.out.latency =
6738 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6739 1000);
6740 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6741 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6742 qos->ucast.in.phy = ev->c_phy;
6743 qos->ucast.out.phy = ev->p_phy;
6744 break;
6745 case HCI_ROLE_MASTER:
6746 qos->ucast.in.interval = p_sdu_interval;
6747 qos->ucast.out.interval = c_sdu_interval;
6748 /* Convert Transport Latency (us) to Latency (msec) */
6749 qos->ucast.out.latency =
6750 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6751 1000);
6752 qos->ucast.in.latency =
6753 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6754 1000);
6755 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6756 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6757 qos->ucast.out.phy = ev->c_phy;
6758 qos->ucast.in.phy = ev->p_phy;
6759 break;
6760 }
6761
6762 if (!ev->status) {
6763 conn->state = BT_CONNECTED;
6764 hci_debugfs_create_conn(conn);
6765 hci_conn_add_sysfs(conn);
6766 hci_iso_setup_path(conn);
6767 goto unlock;
6768 }
6769
6770 conn->state = BT_CLOSED;
6771 hci_connect_cfm(conn, ev->status);
6772 hci_conn_del(conn);
6773
6774unlock:
6775 if (pending)
6776 hci_le_create_cis_pending(hdev);
6777
6778 hci_dev_unlock(hdev);
6779}
6780
6781static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6782{
6783 struct hci_cp_le_reject_cis cp;
6784
6785 memset(&cp, 0, sizeof(cp));
6786 cp.handle = handle;
6787 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6788 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6789}
6790
6791static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6792{
6793 struct hci_cp_le_accept_cis cp;
6794
6795 memset(&cp, 0, sizeof(cp));
6796 cp.handle = handle;
6797 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6798}
6799
6800static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6801 struct sk_buff *skb)
6802{
6803 struct hci_evt_le_cis_req *ev = data;
6804 u16 acl_handle, cis_handle;
6805 struct hci_conn *acl, *cis;
6806 int mask;
6807 __u8 flags = 0;
6808
6809 acl_handle = __le16_to_cpu(ev->acl_handle);
6810 cis_handle = __le16_to_cpu(ev->cis_handle);
6811
6812 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6813 acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6814
6815 hci_dev_lock(hdev);
6816
6817 acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6818 if (!acl)
6819 goto unlock;
6820
6821 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6822 if (!(mask & HCI_LM_ACCEPT)) {
6823 hci_le_reject_cis(hdev, ev->cis_handle);
6824 goto unlock;
6825 }
6826
6827 cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6828 if (!cis) {
6829 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
6830 cis_handle);
6831 if (IS_ERR(cis)) {
6832 hci_le_reject_cis(hdev, ev->cis_handle);
6833 goto unlock;
6834 }
6835 }
6836
6837 cis->iso_qos.ucast.cig = ev->cig_id;
6838 cis->iso_qos.ucast.cis = ev->cis_id;
6839
6840 if (!(flags & HCI_PROTO_DEFER)) {
6841 hci_le_accept_cis(hdev, ev->cis_handle);
6842 } else {
6843 cis->state = BT_CONNECT2;
6844 hci_connect_cfm(cis, 0);
6845 }
6846
6847unlock:
6848 hci_dev_unlock(hdev);
6849}
6850
6851static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
6852{
6853 u8 handle = PTR_UINT(data);
6854
6855 return hci_le_terminate_big_sync(hdev, handle,
6856 HCI_ERROR_LOCAL_HOST_TERM);
6857}
6858
6859static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6860 struct sk_buff *skb)
6861{
6862 struct hci_evt_le_create_big_complete *ev = data;
6863 struct hci_conn *conn;
6864 __u8 i = 0;
6865
6866 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6867
6868 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6869 flex_array_size(ev, bis_handle, ev->num_bis)))
6870 return;
6871
6872 hci_dev_lock(hdev);
6873
6874 /* Connect all BISes that are bound to the BIG */
6875 while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle,
6876 BT_BOUND))) {
6877 if (ev->status) {
6878 hci_connect_cfm(conn, ev->status);
6879 hci_conn_del(conn);
6880 continue;
6881 }
6882
6883 if (hci_conn_set_handle(conn,
6884 __le16_to_cpu(ev->bis_handle[i++])))
6885 continue;
6886
6887 conn->state = BT_CONNECTED;
6888 set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
6889 hci_debugfs_create_conn(conn);
6890 hci_conn_add_sysfs(conn);
6891 hci_iso_setup_path(conn);
6892 }
6893
6894 if (!ev->status && !i)
6895 /* If no BISes have been connected for the BIG,
6896 * terminate. This is in case all bound connections
6897 * have been closed before the BIG creation
6898 * has completed.
6899 */
6900 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
6901 UINT_PTR(ev->handle), NULL);
6902
6903 hci_dev_unlock(hdev);
6904}
6905
6906static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
6907 struct sk_buff *skb)
6908{
6909 struct hci_evt_le_big_sync_estabilished *ev = data;
6910 struct hci_conn *bis, *conn;
6911 int i;
6912
6913 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6914
6915 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
6916 flex_array_size(ev, bis, ev->num_bis)))
6917 return;
6918
6919 hci_dev_lock(hdev);
6920
6921 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle,
6922 ev->num_bis);
6923 if (!conn) {
6924 bt_dev_err(hdev,
6925 "Unable to find connection for big 0x%2.2x",
6926 ev->handle);
6927 goto unlock;
6928 }
6929
6930 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags);
6931
6932 conn->num_bis = 0;
6933 memset(conn->bis, 0, sizeof(conn->num_bis));
6934
6935 for (i = 0; i < ev->num_bis; i++) {
6936 u16 handle = le16_to_cpu(ev->bis[i]);
6937 __le32 interval;
6938
6939 bis = hci_conn_hash_lookup_handle(hdev, handle);
6940 if (!bis) {
6941 if (handle > HCI_CONN_HANDLE_MAX) {
6942 bt_dev_dbg(hdev, "ignore too large handle %u", handle);
6943 continue;
6944 }
6945 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
6946 HCI_ROLE_SLAVE, handle);
6947 if (IS_ERR(bis))
6948 continue;
6949 }
6950
6951 if (ev->status != 0x42)
6952 /* Mark PA sync as established */
6953 set_bit(HCI_CONN_PA_SYNC, &bis->flags);
6954
6955 bis->sync_handle = conn->sync_handle;
6956 bis->iso_qos.bcast.big = ev->handle;
6957 memset(&interval, 0, sizeof(interval));
6958 memcpy(&interval, ev->latency, sizeof(ev->latency));
6959 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
6960 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
6961 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
6962 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
6963
6964 if (!ev->status) {
6965 set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
6966 hci_iso_setup_path(bis);
6967 }
6968 }
6969
6970 /* In case BIG sync failed, notify each failed connection to
6971 * the user after all hci connections have been added
6972 */
6973 if (ev->status)
6974 for (i = 0; i < ev->num_bis; i++) {
6975 u16 handle = le16_to_cpu(ev->bis[i]);
6976
6977 bis = hci_conn_hash_lookup_handle(hdev, handle);
6978 if (!bis)
6979 continue;
6980
6981 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
6982 hci_connect_cfm(bis, ev->status);
6983 }
6984
6985unlock:
6986 /* Handle any other pending BIG sync command */
6987 hci_le_big_create_sync_pending(hdev);
6988
6989 hci_dev_unlock(hdev);
6990}
6991
6992static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
6993 struct sk_buff *skb)
6994{
6995 struct hci_evt_le_big_info_adv_report *ev = data;
6996 int mask = hdev->link_mode;
6997 __u8 flags = 0;
6998 struct hci_conn *pa_sync;
6999
7000 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7001
7002 hci_dev_lock(hdev);
7003
7004 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7005 if (!(mask & HCI_LM_ACCEPT))
7006 goto unlock;
7007
7008 if (!(flags & HCI_PROTO_DEFER))
7009 goto unlock;
7010
7011 pa_sync = hci_conn_hash_lookup_pa_sync_handle
7012 (hdev,
7013 le16_to_cpu(ev->sync_handle));
7014
7015 if (!pa_sync)
7016 goto unlock;
7017
7018 pa_sync->iso_qos.bcast.encryption = ev->encryption;
7019
7020 /* Notify iso layer */
7021 hci_connect_cfm(pa_sync, 0);
7022
7023unlock:
7024 hci_dev_unlock(hdev);
7025}
7026
7027#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7028[_op] = { \
7029 .func = _func, \
7030 .min_len = _min_len, \
7031 .max_len = _max_len, \
7032}
7033
7034#define HCI_LE_EV(_op, _func, _len) \
7035 HCI_LE_EV_VL(_op, _func, _len, _len)
7036
7037#define HCI_LE_EV_STATUS(_op, _func) \
7038 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7039
7040/* Entries in this table shall have their position according to the subevent
7041 * opcode they handle so the use of the macros above is recommend since it does
7042 * attempt to initialize at its proper index using Designated Initializers that
7043 * way events without a callback function can be ommited.
7044 */
7045static const struct hci_le_ev {
7046 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7047 u16 min_len;
7048 u16 max_len;
7049} hci_le_ev_table[U8_MAX + 1] = {
7050 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7051 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7052 sizeof(struct hci_ev_le_conn_complete)),
7053 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7054 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7055 sizeof(struct hci_ev_le_advertising_report),
7056 HCI_MAX_EVENT_SIZE),
7057 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7058 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7059 hci_le_conn_update_complete_evt,
7060 sizeof(struct hci_ev_le_conn_update_complete)),
7061 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7062 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7063 hci_le_remote_feat_complete_evt,
7064 sizeof(struct hci_ev_le_remote_feat_complete)),
7065 /* [0x05 = HCI_EV_LE_LTK_REQ] */
7066 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7067 sizeof(struct hci_ev_le_ltk_req)),
7068 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7069 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7070 hci_le_remote_conn_param_req_evt,
7071 sizeof(struct hci_ev_le_remote_conn_param_req)),
7072 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7073 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7074 hci_le_enh_conn_complete_evt,
7075 sizeof(struct hci_ev_le_enh_conn_complete)),
7076 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7077 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7078 sizeof(struct hci_ev_le_direct_adv_report),
7079 HCI_MAX_EVENT_SIZE),
7080 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7081 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7082 sizeof(struct hci_ev_le_phy_update_complete)),
7083 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7084 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7085 sizeof(struct hci_ev_le_ext_adv_report),
7086 HCI_MAX_EVENT_SIZE),
7087 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7088 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7089 hci_le_pa_sync_estabilished_evt,
7090 sizeof(struct hci_ev_le_pa_sync_established)),
7091 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7092 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7093 hci_le_per_adv_report_evt,
7094 sizeof(struct hci_ev_le_per_adv_report),
7095 HCI_MAX_EVENT_SIZE),
7096 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7097 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7098 sizeof(struct hci_evt_le_ext_adv_set_term)),
7099 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7100 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7101 sizeof(struct hci_evt_le_cis_established)),
7102 /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7103 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7104 sizeof(struct hci_evt_le_cis_req)),
7105 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7106 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7107 hci_le_create_big_complete_evt,
7108 sizeof(struct hci_evt_le_create_big_complete),
7109 HCI_MAX_EVENT_SIZE),
7110 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7111 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7112 hci_le_big_sync_established_evt,
7113 sizeof(struct hci_evt_le_big_sync_estabilished),
7114 HCI_MAX_EVENT_SIZE),
7115 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7116 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7117 hci_le_big_info_adv_report_evt,
7118 sizeof(struct hci_evt_le_big_info_adv_report),
7119 HCI_MAX_EVENT_SIZE),
7120};
7121
7122static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7123 struct sk_buff *skb, u16 *opcode, u8 *status,
7124 hci_req_complete_t *req_complete,
7125 hci_req_complete_skb_t *req_complete_skb)
7126{
7127 struct hci_ev_le_meta *ev = data;
7128 const struct hci_le_ev *subev;
7129
7130 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7131
7132 /* Only match event if command OGF is for LE */
7133 if (hdev->req_skb &&
7134 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 &&
7135 hci_skb_event(hdev->req_skb) == ev->subevent) {
7136 *opcode = hci_skb_opcode(hdev->req_skb);
7137 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7138 req_complete_skb);
7139 }
7140
7141 subev = &hci_le_ev_table[ev->subevent];
7142 if (!subev->func)
7143 return;
7144
7145 if (skb->len < subev->min_len) {
7146 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7147 ev->subevent, skb->len, subev->min_len);
7148 return;
7149 }
7150
7151 /* Just warn if the length is over max_len size it still be
7152 * possible to partially parse the event so leave to callback to
7153 * decide if that is acceptable.
7154 */
7155 if (skb->len > subev->max_len)
7156 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7157 ev->subevent, skb->len, subev->max_len);
7158 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7159 if (!data)
7160 return;
7161
7162 subev->func(hdev, data, skb);
7163}
7164
7165static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7166 u8 event, struct sk_buff *skb)
7167{
7168 struct hci_ev_cmd_complete *ev;
7169 struct hci_event_hdr *hdr;
7170
7171 if (!skb)
7172 return false;
7173
7174 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7175 if (!hdr)
7176 return false;
7177
7178 if (event) {
7179 if (hdr->evt != event)
7180 return false;
7181 return true;
7182 }
7183
7184 /* Check if request ended in Command Status - no way to retrieve
7185 * any extra parameters in this case.
7186 */
7187 if (hdr->evt == HCI_EV_CMD_STATUS)
7188 return false;
7189
7190 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7191 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7192 hdr->evt);
7193 return false;
7194 }
7195
7196 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7197 if (!ev)
7198 return false;
7199
7200 if (opcode != __le16_to_cpu(ev->opcode)) {
7201 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7202 __le16_to_cpu(ev->opcode));
7203 return false;
7204 }
7205
7206 return true;
7207}
7208
7209static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7210 struct sk_buff *skb)
7211{
7212 struct hci_ev_le_advertising_info *adv;
7213 struct hci_ev_le_direct_adv_info *direct_adv;
7214 struct hci_ev_le_ext_adv_info *ext_adv;
7215 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7216 const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7217
7218 hci_dev_lock(hdev);
7219
7220 /* If we are currently suspended and this is the first BT event seen,
7221 * save the wake reason associated with the event.
7222 */
7223 if (!hdev->suspended || hdev->wake_reason)
7224 goto unlock;
7225
7226 /* Default to remote wake. Values for wake_reason are documented in the
7227 * Bluez mgmt api docs.
7228 */
7229 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7230
7231 /* Once configured for remote wakeup, we should only wake up for
7232 * reconnections. It's useful to see which device is waking us up so
7233 * keep track of the bdaddr of the connection event that woke us up.
7234 */
7235 if (event == HCI_EV_CONN_REQUEST) {
7236 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7237 hdev->wake_addr_type = BDADDR_BREDR;
7238 } else if (event == HCI_EV_CONN_COMPLETE) {
7239 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7240 hdev->wake_addr_type = BDADDR_BREDR;
7241 } else if (event == HCI_EV_LE_META) {
7242 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7243 u8 subevent = le_ev->subevent;
7244 u8 *ptr = &skb->data[sizeof(*le_ev)];
7245 u8 num_reports = *ptr;
7246
7247 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7248 subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7249 subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7250 num_reports) {
7251 adv = (void *)(ptr + 1);
7252 direct_adv = (void *)(ptr + 1);
7253 ext_adv = (void *)(ptr + 1);
7254
7255 switch (subevent) {
7256 case HCI_EV_LE_ADVERTISING_REPORT:
7257 bacpy(&hdev->wake_addr, &adv->bdaddr);
7258 hdev->wake_addr_type = adv->bdaddr_type;
7259 break;
7260 case HCI_EV_LE_DIRECT_ADV_REPORT:
7261 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7262 hdev->wake_addr_type = direct_adv->bdaddr_type;
7263 break;
7264 case HCI_EV_LE_EXT_ADV_REPORT:
7265 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7266 hdev->wake_addr_type = ext_adv->bdaddr_type;
7267 break;
7268 }
7269 }
7270 } else {
7271 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7272 }
7273
7274unlock:
7275 hci_dev_unlock(hdev);
7276}
7277
7278#define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7279[_op] = { \
7280 .req = false, \
7281 .func = _func, \
7282 .min_len = _min_len, \
7283 .max_len = _max_len, \
7284}
7285
7286#define HCI_EV(_op, _func, _len) \
7287 HCI_EV_VL(_op, _func, _len, _len)
7288
7289#define HCI_EV_STATUS(_op, _func) \
7290 HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7291
7292#define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7293[_op] = { \
7294 .req = true, \
7295 .func_req = _func, \
7296 .min_len = _min_len, \
7297 .max_len = _max_len, \
7298}
7299
7300#define HCI_EV_REQ(_op, _func, _len) \
7301 HCI_EV_REQ_VL(_op, _func, _len, _len)
7302
7303/* Entries in this table shall have their position according to the event opcode
7304 * they handle so the use of the macros above is recommend since it does attempt
7305 * to initialize at its proper index using Designated Initializers that way
7306 * events without a callback function don't have entered.
7307 */
7308static const struct hci_ev {
7309 bool req;
7310 union {
7311 void (*func)(struct hci_dev *hdev, void *data,
7312 struct sk_buff *skb);
7313 void (*func_req)(struct hci_dev *hdev, void *data,
7314 struct sk_buff *skb, u16 *opcode, u8 *status,
7315 hci_req_complete_t *req_complete,
7316 hci_req_complete_skb_t *req_complete_skb);
7317 };
7318 u16 min_len;
7319 u16 max_len;
7320} hci_ev_table[U8_MAX + 1] = {
7321 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7322 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7323 /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7324 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7325 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7326 /* [0x03 = HCI_EV_CONN_COMPLETE] */
7327 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7328 sizeof(struct hci_ev_conn_complete)),
7329 /* [0x04 = HCI_EV_CONN_REQUEST] */
7330 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7331 sizeof(struct hci_ev_conn_request)),
7332 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7333 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7334 sizeof(struct hci_ev_disconn_complete)),
7335 /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7336 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7337 sizeof(struct hci_ev_auth_complete)),
7338 /* [0x07 = HCI_EV_REMOTE_NAME] */
7339 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7340 sizeof(struct hci_ev_remote_name)),
7341 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7342 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7343 sizeof(struct hci_ev_encrypt_change)),
7344 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7345 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7346 hci_change_link_key_complete_evt,
7347 sizeof(struct hci_ev_change_link_key_complete)),
7348 /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7349 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7350 sizeof(struct hci_ev_remote_features)),
7351 /* [0x0e = HCI_EV_CMD_COMPLETE] */
7352 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7353 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7354 /* [0x0f = HCI_EV_CMD_STATUS] */
7355 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7356 sizeof(struct hci_ev_cmd_status)),
7357 /* [0x10 = HCI_EV_CMD_STATUS] */
7358 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7359 sizeof(struct hci_ev_hardware_error)),
7360 /* [0x12 = HCI_EV_ROLE_CHANGE] */
7361 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7362 sizeof(struct hci_ev_role_change)),
7363 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7364 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7365 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7366 /* [0x14 = HCI_EV_MODE_CHANGE] */
7367 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7368 sizeof(struct hci_ev_mode_change)),
7369 /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7370 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7371 sizeof(struct hci_ev_pin_code_req)),
7372 /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7373 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7374 sizeof(struct hci_ev_link_key_req)),
7375 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7376 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7377 sizeof(struct hci_ev_link_key_notify)),
7378 /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7379 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7380 sizeof(struct hci_ev_clock_offset)),
7381 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7382 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7383 sizeof(struct hci_ev_pkt_type_change)),
7384 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7385 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7386 sizeof(struct hci_ev_pscan_rep_mode)),
7387 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7388 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7389 hci_inquiry_result_with_rssi_evt,
7390 sizeof(struct hci_ev_inquiry_result_rssi),
7391 HCI_MAX_EVENT_SIZE),
7392 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7393 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7394 sizeof(struct hci_ev_remote_ext_features)),
7395 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7396 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7397 sizeof(struct hci_ev_sync_conn_complete)),
7398 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7399 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7400 hci_extended_inquiry_result_evt,
7401 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7402 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7403 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7404 sizeof(struct hci_ev_key_refresh_complete)),
7405 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7406 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7407 sizeof(struct hci_ev_io_capa_request)),
7408 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7409 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7410 sizeof(struct hci_ev_io_capa_reply)),
7411 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7412 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7413 sizeof(struct hci_ev_user_confirm_req)),
7414 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7415 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7416 sizeof(struct hci_ev_user_passkey_req)),
7417 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7418 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7419 sizeof(struct hci_ev_remote_oob_data_request)),
7420 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7421 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7422 sizeof(struct hci_ev_simple_pair_complete)),
7423 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7424 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7425 sizeof(struct hci_ev_user_passkey_notify)),
7426 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7427 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7428 sizeof(struct hci_ev_keypress_notify)),
7429 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7430 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7431 sizeof(struct hci_ev_remote_host_features)),
7432 /* [0x3e = HCI_EV_LE_META] */
7433 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7434 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7435 /* [0xff = HCI_EV_VENDOR] */
7436 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7437};
7438
7439static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7440 u16 *opcode, u8 *status,
7441 hci_req_complete_t *req_complete,
7442 hci_req_complete_skb_t *req_complete_skb)
7443{
7444 const struct hci_ev *ev = &hci_ev_table[event];
7445 void *data;
7446
7447 if (!ev->func)
7448 return;
7449
7450 if (skb->len < ev->min_len) {
7451 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7452 event, skb->len, ev->min_len);
7453 return;
7454 }
7455
7456 /* Just warn if the length is over max_len size it still be
7457 * possible to partially parse the event so leave to callback to
7458 * decide if that is acceptable.
7459 */
7460 if (skb->len > ev->max_len)
7461 bt_dev_warn_ratelimited(hdev,
7462 "unexpected event 0x%2.2x length: %u > %u",
7463 event, skb->len, ev->max_len);
7464
7465 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7466 if (!data)
7467 return;
7468
7469 if (ev->req)
7470 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7471 req_complete_skb);
7472 else
7473 ev->func(hdev, data, skb);
7474}
7475
7476void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7477{
7478 struct hci_event_hdr *hdr = (void *) skb->data;
7479 hci_req_complete_t req_complete = NULL;
7480 hci_req_complete_skb_t req_complete_skb = NULL;
7481 struct sk_buff *orig_skb = NULL;
7482 u8 status = 0, event, req_evt = 0;
7483 u16 opcode = HCI_OP_NOP;
7484
7485 if (skb->len < sizeof(*hdr)) {
7486 bt_dev_err(hdev, "Malformed HCI Event");
7487 goto done;
7488 }
7489
7490 kfree_skb(hdev->recv_event);
7491 hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7492
7493 event = hdr->evt;
7494 if (!event) {
7495 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7496 event);
7497 goto done;
7498 }
7499
7500 /* Only match event if command OGF is not for LE */
7501 if (hdev->req_skb &&
7502 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 &&
7503 hci_skb_event(hdev->req_skb) == event) {
7504 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb),
7505 status, &req_complete, &req_complete_skb);
7506 req_evt = event;
7507 }
7508
7509 /* If it looks like we might end up having to call
7510 * req_complete_skb, store a pristine copy of the skb since the
7511 * various handlers may modify the original one through
7512 * skb_pull() calls, etc.
7513 */
7514 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7515 event == HCI_EV_CMD_COMPLETE)
7516 orig_skb = skb_clone(skb, GFP_KERNEL);
7517
7518 skb_pull(skb, HCI_EVENT_HDR_SIZE);
7519
7520 /* Store wake reason if we're suspended */
7521 hci_store_wake_reason(hdev, event, skb);
7522
7523 bt_dev_dbg(hdev, "event 0x%2.2x", event);
7524
7525 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7526 &req_complete_skb);
7527
7528 if (req_complete) {
7529 req_complete(hdev, status, opcode);
7530 } else if (req_complete_skb) {
7531 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7532 kfree_skb(orig_skb);
7533 orig_skb = NULL;
7534 }
7535 req_complete_skb(hdev, status, opcode, orig_skb);
7536 }
7537
7538done:
7539 kfree_skb(orig_skb);
7540 kfree_skb(skb);
7541 hdev->stat.evt_rx++;
7542}