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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
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25/* Bluetooth HCI event handling. */
26
27#include <asm/unaligned.h>
28
29#include <net/bluetooth/bluetooth.h>
30#include <net/bluetooth/hci_core.h>
31#include <net/bluetooth/mgmt.h>
32
33#include "hci_request.h"
34#include "hci_debugfs.h"
35#include "a2mp.h"
36#include "amp.h"
37#include "smp.h"
38
39#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
40 "\x00\x00\x00\x00\x00\x00\x00\x00"
41
42/* Handle HCI Event packets */
43
44static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
45{
46 __u8 status = *((__u8 *) skb->data);
47
48 BT_DBG("%s status 0x%2.2x", hdev->name, status);
49
50 if (status)
51 return;
52
53 clear_bit(HCI_INQUIRY, &hdev->flags);
54 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
55 wake_up_bit(&hdev->flags, HCI_INQUIRY);
56
57 hci_dev_lock(hdev);
58 /* Set discovery state to stopped if we're not doing LE active
59 * scanning.
60 */
61 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
62 hdev->le_scan_type != LE_SCAN_ACTIVE)
63 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
64 hci_dev_unlock(hdev);
65
66 hci_conn_check_pending(hdev);
67}
68
69static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
70{
71 __u8 status = *((__u8 *) skb->data);
72
73 BT_DBG("%s status 0x%2.2x", hdev->name, status);
74
75 if (status)
76 return;
77
78 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
79}
80
81static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
82{
83 __u8 status = *((__u8 *) skb->data);
84
85 BT_DBG("%s status 0x%2.2x", hdev->name, status);
86
87 if (status)
88 return;
89
90 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
91
92 hci_conn_check_pending(hdev);
93}
94
95static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
96 struct sk_buff *skb)
97{
98 BT_DBG("%s", hdev->name);
99}
100
101static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
102{
103 struct hci_rp_role_discovery *rp = (void *) skb->data;
104 struct hci_conn *conn;
105
106 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
107
108 if (rp->status)
109 return;
110
111 hci_dev_lock(hdev);
112
113 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
114 if (conn)
115 conn->role = rp->role;
116
117 hci_dev_unlock(hdev);
118}
119
120static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
121{
122 struct hci_rp_read_link_policy *rp = (void *) skb->data;
123 struct hci_conn *conn;
124
125 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
126
127 if (rp->status)
128 return;
129
130 hci_dev_lock(hdev);
131
132 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
133 if (conn)
134 conn->link_policy = __le16_to_cpu(rp->policy);
135
136 hci_dev_unlock(hdev);
137}
138
139static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
140{
141 struct hci_rp_write_link_policy *rp = (void *) skb->data;
142 struct hci_conn *conn;
143 void *sent;
144
145 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
146
147 if (rp->status)
148 return;
149
150 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
151 if (!sent)
152 return;
153
154 hci_dev_lock(hdev);
155
156 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
157 if (conn)
158 conn->link_policy = get_unaligned_le16(sent + 2);
159
160 hci_dev_unlock(hdev);
161}
162
163static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
164 struct sk_buff *skb)
165{
166 struct hci_rp_read_def_link_policy *rp = (void *) skb->data;
167
168 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
169
170 if (rp->status)
171 return;
172
173 hdev->link_policy = __le16_to_cpu(rp->policy);
174}
175
176static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
177 struct sk_buff *skb)
178{
179 __u8 status = *((__u8 *) skb->data);
180 void *sent;
181
182 BT_DBG("%s status 0x%2.2x", hdev->name, status);
183
184 if (status)
185 return;
186
187 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
188 if (!sent)
189 return;
190
191 hdev->link_policy = get_unaligned_le16(sent);
192}
193
194static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
195{
196 __u8 status = *((__u8 *) skb->data);
197
198 BT_DBG("%s status 0x%2.2x", hdev->name, status);
199
200 clear_bit(HCI_RESET, &hdev->flags);
201
202 if (status)
203 return;
204
205 /* Reset all non-persistent flags */
206 hci_dev_clear_volatile_flags(hdev);
207
208 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
209
210 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
211 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
212
213 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
214 hdev->adv_data_len = 0;
215
216 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
217 hdev->scan_rsp_data_len = 0;
218
219 hdev->le_scan_type = LE_SCAN_PASSIVE;
220
221 hdev->ssp_debug_mode = 0;
222
223 hci_bdaddr_list_clear(&hdev->le_white_list);
224}
225
226static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
227 struct sk_buff *skb)
228{
229 struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
230 struct hci_cp_read_stored_link_key *sent;
231
232 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
233
234 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
235 if (!sent)
236 return;
237
238 if (!rp->status && sent->read_all == 0x01) {
239 hdev->stored_max_keys = rp->max_keys;
240 hdev->stored_num_keys = rp->num_keys;
241 }
242}
243
244static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
245 struct sk_buff *skb)
246{
247 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;
248
249 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
250
251 if (rp->status)
252 return;
253
254 if (rp->num_keys <= hdev->stored_num_keys)
255 hdev->stored_num_keys -= rp->num_keys;
256 else
257 hdev->stored_num_keys = 0;
258}
259
260static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
261{
262 __u8 status = *((__u8 *) skb->data);
263 void *sent;
264
265 BT_DBG("%s status 0x%2.2x", hdev->name, status);
266
267 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
268 if (!sent)
269 return;
270
271 hci_dev_lock(hdev);
272
273 if (hci_dev_test_flag(hdev, HCI_MGMT))
274 mgmt_set_local_name_complete(hdev, sent, status);
275 else if (!status)
276 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
277
278 hci_dev_unlock(hdev);
279}
280
281static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
282{
283 struct hci_rp_read_local_name *rp = (void *) skb->data;
284
285 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
286
287 if (rp->status)
288 return;
289
290 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
291 hci_dev_test_flag(hdev, HCI_CONFIG))
292 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
293}
294
295static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
296{
297 __u8 status = *((__u8 *) skb->data);
298 void *sent;
299
300 BT_DBG("%s status 0x%2.2x", hdev->name, status);
301
302 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
303 if (!sent)
304 return;
305
306 hci_dev_lock(hdev);
307
308 if (!status) {
309 __u8 param = *((__u8 *) sent);
310
311 if (param == AUTH_ENABLED)
312 set_bit(HCI_AUTH, &hdev->flags);
313 else
314 clear_bit(HCI_AUTH, &hdev->flags);
315 }
316
317 if (hci_dev_test_flag(hdev, HCI_MGMT))
318 mgmt_auth_enable_complete(hdev, status);
319
320 hci_dev_unlock(hdev);
321}
322
323static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
324{
325 __u8 status = *((__u8 *) skb->data);
326 __u8 param;
327 void *sent;
328
329 BT_DBG("%s status 0x%2.2x", hdev->name, status);
330
331 if (status)
332 return;
333
334 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
335 if (!sent)
336 return;
337
338 param = *((__u8 *) sent);
339
340 if (param)
341 set_bit(HCI_ENCRYPT, &hdev->flags);
342 else
343 clear_bit(HCI_ENCRYPT, &hdev->flags);
344}
345
346static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
347{
348 __u8 status = *((__u8 *) skb->data);
349 __u8 param;
350 void *sent;
351
352 BT_DBG("%s status 0x%2.2x", hdev->name, status);
353
354 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
355 if (!sent)
356 return;
357
358 param = *((__u8 *) sent);
359
360 hci_dev_lock(hdev);
361
362 if (status) {
363 hdev->discov_timeout = 0;
364 goto done;
365 }
366
367 if (param & SCAN_INQUIRY)
368 set_bit(HCI_ISCAN, &hdev->flags);
369 else
370 clear_bit(HCI_ISCAN, &hdev->flags);
371
372 if (param & SCAN_PAGE)
373 set_bit(HCI_PSCAN, &hdev->flags);
374 else
375 clear_bit(HCI_PSCAN, &hdev->flags);
376
377done:
378 hci_dev_unlock(hdev);
379}
380
381static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
382{
383 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
384
385 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
386
387 if (rp->status)
388 return;
389
390 memcpy(hdev->dev_class, rp->dev_class, 3);
391
392 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
393 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
394}
395
396static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
397{
398 __u8 status = *((__u8 *) skb->data);
399 void *sent;
400
401 BT_DBG("%s status 0x%2.2x", hdev->name, status);
402
403 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
404 if (!sent)
405 return;
406
407 hci_dev_lock(hdev);
408
409 if (status == 0)
410 memcpy(hdev->dev_class, sent, 3);
411
412 if (hci_dev_test_flag(hdev, HCI_MGMT))
413 mgmt_set_class_of_dev_complete(hdev, sent, status);
414
415 hci_dev_unlock(hdev);
416}
417
418static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
419{
420 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
421 __u16 setting;
422
423 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
424
425 if (rp->status)
426 return;
427
428 setting = __le16_to_cpu(rp->voice_setting);
429
430 if (hdev->voice_setting == setting)
431 return;
432
433 hdev->voice_setting = setting;
434
435 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
436
437 if (hdev->notify)
438 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
439}
440
441static void hci_cc_write_voice_setting(struct hci_dev *hdev,
442 struct sk_buff *skb)
443{
444 __u8 status = *((__u8 *) skb->data);
445 __u16 setting;
446 void *sent;
447
448 BT_DBG("%s status 0x%2.2x", hdev->name, status);
449
450 if (status)
451 return;
452
453 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
454 if (!sent)
455 return;
456
457 setting = get_unaligned_le16(sent);
458
459 if (hdev->voice_setting == setting)
460 return;
461
462 hdev->voice_setting = setting;
463
464 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
465
466 if (hdev->notify)
467 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
468}
469
470static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
471 struct sk_buff *skb)
472{
473 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
474
475 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
476
477 if (rp->status)
478 return;
479
480 hdev->num_iac = rp->num_iac;
481
482 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
483}
484
485static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
486{
487 __u8 status = *((__u8 *) skb->data);
488 struct hci_cp_write_ssp_mode *sent;
489
490 BT_DBG("%s status 0x%2.2x", hdev->name, status);
491
492 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
493 if (!sent)
494 return;
495
496 hci_dev_lock(hdev);
497
498 if (!status) {
499 if (sent->mode)
500 hdev->features[1][0] |= LMP_HOST_SSP;
501 else
502 hdev->features[1][0] &= ~LMP_HOST_SSP;
503 }
504
505 if (hci_dev_test_flag(hdev, HCI_MGMT))
506 mgmt_ssp_enable_complete(hdev, sent->mode, status);
507 else if (!status) {
508 if (sent->mode)
509 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
510 else
511 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
512 }
513
514 hci_dev_unlock(hdev);
515}
516
517static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
518{
519 u8 status = *((u8 *) skb->data);
520 struct hci_cp_write_sc_support *sent;
521
522 BT_DBG("%s status 0x%2.2x", hdev->name, status);
523
524 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
525 if (!sent)
526 return;
527
528 hci_dev_lock(hdev);
529
530 if (!status) {
531 if (sent->support)
532 hdev->features[1][0] |= LMP_HOST_SC;
533 else
534 hdev->features[1][0] &= ~LMP_HOST_SC;
535 }
536
537 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
538 if (sent->support)
539 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
540 else
541 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
542 }
543
544 hci_dev_unlock(hdev);
545}
546
547static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
548{
549 struct hci_rp_read_local_version *rp = (void *) skb->data;
550
551 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
552
553 if (rp->status)
554 return;
555
556 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
557 hci_dev_test_flag(hdev, HCI_CONFIG)) {
558 hdev->hci_ver = rp->hci_ver;
559 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
560 hdev->lmp_ver = rp->lmp_ver;
561 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
562 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
563 }
564}
565
566static void hci_cc_read_local_commands(struct hci_dev *hdev,
567 struct sk_buff *skb)
568{
569 struct hci_rp_read_local_commands *rp = (void *) skb->data;
570
571 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
572
573 if (rp->status)
574 return;
575
576 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
577 hci_dev_test_flag(hdev, HCI_CONFIG))
578 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
579}
580
581static void hci_cc_read_local_features(struct hci_dev *hdev,
582 struct sk_buff *skb)
583{
584 struct hci_rp_read_local_features *rp = (void *) skb->data;
585
586 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
587
588 if (rp->status)
589 return;
590
591 memcpy(hdev->features, rp->features, 8);
592
593 /* Adjust default settings according to features
594 * supported by device. */
595
596 if (hdev->features[0][0] & LMP_3SLOT)
597 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
598
599 if (hdev->features[0][0] & LMP_5SLOT)
600 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
601
602 if (hdev->features[0][1] & LMP_HV2) {
603 hdev->pkt_type |= (HCI_HV2);
604 hdev->esco_type |= (ESCO_HV2);
605 }
606
607 if (hdev->features[0][1] & LMP_HV3) {
608 hdev->pkt_type |= (HCI_HV3);
609 hdev->esco_type |= (ESCO_HV3);
610 }
611
612 if (lmp_esco_capable(hdev))
613 hdev->esco_type |= (ESCO_EV3);
614
615 if (hdev->features[0][4] & LMP_EV4)
616 hdev->esco_type |= (ESCO_EV4);
617
618 if (hdev->features[0][4] & LMP_EV5)
619 hdev->esco_type |= (ESCO_EV5);
620
621 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
622 hdev->esco_type |= (ESCO_2EV3);
623
624 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
625 hdev->esco_type |= (ESCO_3EV3);
626
627 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
628 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
629}
630
631static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
632 struct sk_buff *skb)
633{
634 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
635
636 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
637
638 if (rp->status)
639 return;
640
641 if (hdev->max_page < rp->max_page)
642 hdev->max_page = rp->max_page;
643
644 if (rp->page < HCI_MAX_PAGES)
645 memcpy(hdev->features[rp->page], rp->features, 8);
646}
647
648static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
649 struct sk_buff *skb)
650{
651 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
652
653 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
654
655 if (rp->status)
656 return;
657
658 hdev->flow_ctl_mode = rp->mode;
659}
660
661static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
662{
663 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
664
665 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
666
667 if (rp->status)
668 return;
669
670 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
671 hdev->sco_mtu = rp->sco_mtu;
672 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
673 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
674
675 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
676 hdev->sco_mtu = 64;
677 hdev->sco_pkts = 8;
678 }
679
680 hdev->acl_cnt = hdev->acl_pkts;
681 hdev->sco_cnt = hdev->sco_pkts;
682
683 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
684 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
685}
686
687static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
688{
689 struct hci_rp_read_bd_addr *rp = (void *) skb->data;
690
691 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
692
693 if (rp->status)
694 return;
695
696 if (test_bit(HCI_INIT, &hdev->flags))
697 bacpy(&hdev->bdaddr, &rp->bdaddr);
698
699 if (hci_dev_test_flag(hdev, HCI_SETUP))
700 bacpy(&hdev->setup_addr, &rp->bdaddr);
701}
702
703static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
704 struct sk_buff *skb)
705{
706 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;
707
708 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
709
710 if (rp->status)
711 return;
712
713 if (test_bit(HCI_INIT, &hdev->flags)) {
714 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
715 hdev->page_scan_window = __le16_to_cpu(rp->window);
716 }
717}
718
719static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
720 struct sk_buff *skb)
721{
722 u8 status = *((u8 *) skb->data);
723 struct hci_cp_write_page_scan_activity *sent;
724
725 BT_DBG("%s status 0x%2.2x", hdev->name, status);
726
727 if (status)
728 return;
729
730 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
731 if (!sent)
732 return;
733
734 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
735 hdev->page_scan_window = __le16_to_cpu(sent->window);
736}
737
738static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
739 struct sk_buff *skb)
740{
741 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
742
743 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
744
745 if (rp->status)
746 return;
747
748 if (test_bit(HCI_INIT, &hdev->flags))
749 hdev->page_scan_type = rp->type;
750}
751
752static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
753 struct sk_buff *skb)
754{
755 u8 status = *((u8 *) skb->data);
756 u8 *type;
757
758 BT_DBG("%s status 0x%2.2x", hdev->name, status);
759
760 if (status)
761 return;
762
763 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
764 if (type)
765 hdev->page_scan_type = *type;
766}
767
768static void hci_cc_read_data_block_size(struct hci_dev *hdev,
769 struct sk_buff *skb)
770{
771 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
772
773 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
774
775 if (rp->status)
776 return;
777
778 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
779 hdev->block_len = __le16_to_cpu(rp->block_len);
780 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
781
782 hdev->block_cnt = hdev->num_blocks;
783
784 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
785 hdev->block_cnt, hdev->block_len);
786}
787
788static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
789{
790 struct hci_rp_read_clock *rp = (void *) skb->data;
791 struct hci_cp_read_clock *cp;
792 struct hci_conn *conn;
793
794 BT_DBG("%s", hdev->name);
795
796 if (skb->len < sizeof(*rp))
797 return;
798
799 if (rp->status)
800 return;
801
802 hci_dev_lock(hdev);
803
804 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
805 if (!cp)
806 goto unlock;
807
808 if (cp->which == 0x00) {
809 hdev->clock = le32_to_cpu(rp->clock);
810 goto unlock;
811 }
812
813 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
814 if (conn) {
815 conn->clock = le32_to_cpu(rp->clock);
816 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
817 }
818
819unlock:
820 hci_dev_unlock(hdev);
821}
822
823static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
824 struct sk_buff *skb)
825{
826 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
827
828 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
829
830 if (rp->status)
831 return;
832
833 hdev->amp_status = rp->amp_status;
834 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
835 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
836 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
837 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
838 hdev->amp_type = rp->amp_type;
839 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
840 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
841 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
842 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
843}
844
845static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
846 struct sk_buff *skb)
847{
848 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
849
850 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
851
852 if (rp->status)
853 return;
854
855 hdev->inq_tx_power = rp->tx_power;
856}
857
858static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
859{
860 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
861 struct hci_cp_pin_code_reply *cp;
862 struct hci_conn *conn;
863
864 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
865
866 hci_dev_lock(hdev);
867
868 if (hci_dev_test_flag(hdev, HCI_MGMT))
869 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
870
871 if (rp->status)
872 goto unlock;
873
874 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
875 if (!cp)
876 goto unlock;
877
878 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
879 if (conn)
880 conn->pin_length = cp->pin_len;
881
882unlock:
883 hci_dev_unlock(hdev);
884}
885
886static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
887{
888 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
889
890 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
891
892 hci_dev_lock(hdev);
893
894 if (hci_dev_test_flag(hdev, HCI_MGMT))
895 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
896 rp->status);
897
898 hci_dev_unlock(hdev);
899}
900
901static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
902 struct sk_buff *skb)
903{
904 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
905
906 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
907
908 if (rp->status)
909 return;
910
911 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
912 hdev->le_pkts = rp->le_max_pkt;
913
914 hdev->le_cnt = hdev->le_pkts;
915
916 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
917}
918
919static void hci_cc_le_read_local_features(struct hci_dev *hdev,
920 struct sk_buff *skb)
921{
922 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
923
924 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
925
926 if (rp->status)
927 return;
928
929 memcpy(hdev->le_features, rp->features, 8);
930}
931
932static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
933 struct sk_buff *skb)
934{
935 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
936
937 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
938
939 if (rp->status)
940 return;
941
942 hdev->adv_tx_power = rp->tx_power;
943}
944
945static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
946{
947 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
948
949 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
950
951 hci_dev_lock(hdev);
952
953 if (hci_dev_test_flag(hdev, HCI_MGMT))
954 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
955 rp->status);
956
957 hci_dev_unlock(hdev);
958}
959
960static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
961 struct sk_buff *skb)
962{
963 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
964
965 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
966
967 hci_dev_lock(hdev);
968
969 if (hci_dev_test_flag(hdev, HCI_MGMT))
970 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
971 ACL_LINK, 0, rp->status);
972
973 hci_dev_unlock(hdev);
974}
975
976static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
977{
978 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
979
980 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
981
982 hci_dev_lock(hdev);
983
984 if (hci_dev_test_flag(hdev, HCI_MGMT))
985 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
986 0, rp->status);
987
988 hci_dev_unlock(hdev);
989}
990
991static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
992 struct sk_buff *skb)
993{
994 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
995
996 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
997
998 hci_dev_lock(hdev);
999
1000 if (hci_dev_test_flag(hdev, HCI_MGMT))
1001 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1002 ACL_LINK, 0, rp->status);
1003
1004 hci_dev_unlock(hdev);
1005}
1006
1007static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
1008 struct sk_buff *skb)
1009{
1010 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
1011
1012 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1013}
1014
1015static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
1016 struct sk_buff *skb)
1017{
1018 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1019
1020 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1021}
1022
1023static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1024{
1025 __u8 status = *((__u8 *) skb->data);
1026 bdaddr_t *sent;
1027
1028 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1029
1030 if (status)
1031 return;
1032
1033 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1034 if (!sent)
1035 return;
1036
1037 hci_dev_lock(hdev);
1038
1039 bacpy(&hdev->random_addr, sent);
1040
1041 hci_dev_unlock(hdev);
1042}
1043
1044static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1045{
1046 __u8 *sent, status = *((__u8 *) skb->data);
1047
1048 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1049
1050 if (status)
1051 return;
1052
1053 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1054 if (!sent)
1055 return;
1056
1057 hci_dev_lock(hdev);
1058
1059 /* If we're doing connection initiation as peripheral. Set a
1060 * timeout in case something goes wrong.
1061 */
1062 if (*sent) {
1063 struct hci_conn *conn;
1064
1065 hci_dev_set_flag(hdev, HCI_LE_ADV);
1066
1067 conn = hci_lookup_le_connect(hdev);
1068 if (conn)
1069 queue_delayed_work(hdev->workqueue,
1070 &conn->le_conn_timeout,
1071 conn->conn_timeout);
1072 } else {
1073 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1074 }
1075
1076 hci_dev_unlock(hdev);
1077}
1078
1079static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1080{
1081 struct hci_cp_le_set_scan_param *cp;
1082 __u8 status = *((__u8 *) skb->data);
1083
1084 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1085
1086 if (status)
1087 return;
1088
1089 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1090 if (!cp)
1091 return;
1092
1093 hci_dev_lock(hdev);
1094
1095 hdev->le_scan_type = cp->type;
1096
1097 hci_dev_unlock(hdev);
1098}
1099
1100static bool has_pending_adv_report(struct hci_dev *hdev)
1101{
1102 struct discovery_state *d = &hdev->discovery;
1103
1104 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1105}
1106
1107static void clear_pending_adv_report(struct hci_dev *hdev)
1108{
1109 struct discovery_state *d = &hdev->discovery;
1110
1111 bacpy(&d->last_adv_addr, BDADDR_ANY);
1112 d->last_adv_data_len = 0;
1113}
1114
1115static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116 u8 bdaddr_type, s8 rssi, u32 flags,
1117 u8 *data, u8 len)
1118{
1119 struct discovery_state *d = &hdev->discovery;
1120
1121 bacpy(&d->last_adv_addr, bdaddr);
1122 d->last_adv_addr_type = bdaddr_type;
1123 d->last_adv_rssi = rssi;
1124 d->last_adv_flags = flags;
1125 memcpy(d->last_adv_data, data, len);
1126 d->last_adv_data_len = len;
1127}
1128
1129static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1130 struct sk_buff *skb)
1131{
1132 struct hci_cp_le_set_scan_enable *cp;
1133 __u8 status = *((__u8 *) skb->data);
1134
1135 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1136
1137 if (status)
1138 return;
1139
1140 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1141 if (!cp)
1142 return;
1143
1144 hci_dev_lock(hdev);
1145
1146 switch (cp->enable) {
1147 case LE_SCAN_ENABLE:
1148 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1149 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1150 clear_pending_adv_report(hdev);
1151 break;
1152
1153 case LE_SCAN_DISABLE:
1154 /* We do this here instead of when setting DISCOVERY_STOPPED
1155 * since the latter would potentially require waiting for
1156 * inquiry to stop too.
1157 */
1158 if (has_pending_adv_report(hdev)) {
1159 struct discovery_state *d = &hdev->discovery;
1160
1161 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1162 d->last_adv_addr_type, NULL,
1163 d->last_adv_rssi, d->last_adv_flags,
1164 d->last_adv_data,
1165 d->last_adv_data_len, NULL, 0);
1166 }
1167
1168 /* Cancel this timer so that we don't try to disable scanning
1169 * when it's already disabled.
1170 */
1171 cancel_delayed_work(&hdev->le_scan_disable);
1172
1173 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1174
1175 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1176 * interrupted scanning due to a connect request. Mark
1177 * therefore discovery as stopped. If this was not
1178 * because of a connect request advertising might have
1179 * been disabled because of active scanning, so
1180 * re-enable it again if necessary.
1181 */
1182 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1183 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1184 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1185 hdev->discovery.state == DISCOVERY_FINDING)
1186 hci_req_reenable_advertising(hdev);
1187
1188 break;
1189
1190 default:
1191 BT_ERR("Used reserved LE_Scan_Enable param %d", cp->enable);
1192 break;
1193 }
1194
1195 hci_dev_unlock(hdev);
1196}
1197
1198static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1199 struct sk_buff *skb)
1200{
1201 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1202
1203 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1204
1205 if (rp->status)
1206 return;
1207
1208 hdev->le_white_list_size = rp->size;
1209}
1210
1211static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1212 struct sk_buff *skb)
1213{
1214 __u8 status = *((__u8 *) skb->data);
1215
1216 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1217
1218 if (status)
1219 return;
1220
1221 hci_bdaddr_list_clear(&hdev->le_white_list);
1222}
1223
1224static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1225 struct sk_buff *skb)
1226{
1227 struct hci_cp_le_add_to_white_list *sent;
1228 __u8 status = *((__u8 *) skb->data);
1229
1230 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1231
1232 if (status)
1233 return;
1234
1235 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1236 if (!sent)
1237 return;
1238
1239 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1240 sent->bdaddr_type);
1241}
1242
1243static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1244 struct sk_buff *skb)
1245{
1246 struct hci_cp_le_del_from_white_list *sent;
1247 __u8 status = *((__u8 *) skb->data);
1248
1249 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1250
1251 if (status)
1252 return;
1253
1254 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1255 if (!sent)
1256 return;
1257
1258 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1259 sent->bdaddr_type);
1260}
1261
1262static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1263 struct sk_buff *skb)
1264{
1265 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1266
1267 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1268
1269 if (rp->status)
1270 return;
1271
1272 memcpy(hdev->le_states, rp->le_states, 8);
1273}
1274
1275static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1276 struct sk_buff *skb)
1277{
1278 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1279
1280 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1281
1282 if (rp->status)
1283 return;
1284
1285 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1286 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1287}
1288
1289static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1290 struct sk_buff *skb)
1291{
1292 struct hci_cp_le_write_def_data_len *sent;
1293 __u8 status = *((__u8 *) skb->data);
1294
1295 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1296
1297 if (status)
1298 return;
1299
1300 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1301 if (!sent)
1302 return;
1303
1304 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1305 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1306}
1307
1308static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1309 struct sk_buff *skb)
1310{
1311 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1312
1313 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1314
1315 if (rp->status)
1316 return;
1317
1318 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1319 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1320 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1321 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1322}
1323
1324static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1325 struct sk_buff *skb)
1326{
1327 struct hci_cp_write_le_host_supported *sent;
1328 __u8 status = *((__u8 *) skb->data);
1329
1330 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1331
1332 if (status)
1333 return;
1334
1335 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1336 if (!sent)
1337 return;
1338
1339 hci_dev_lock(hdev);
1340
1341 if (sent->le) {
1342 hdev->features[1][0] |= LMP_HOST_LE;
1343 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1344 } else {
1345 hdev->features[1][0] &= ~LMP_HOST_LE;
1346 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
1347 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1348 }
1349
1350 if (sent->simul)
1351 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1352 else
1353 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1354
1355 hci_dev_unlock(hdev);
1356}
1357
1358static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1359{
1360 struct hci_cp_le_set_adv_param *cp;
1361 u8 status = *((u8 *) skb->data);
1362
1363 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1364
1365 if (status)
1366 return;
1367
1368 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1369 if (!cp)
1370 return;
1371
1372 hci_dev_lock(hdev);
1373 hdev->adv_addr_type = cp->own_address_type;
1374 hci_dev_unlock(hdev);
1375}
1376
1377static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1378{
1379 struct hci_rp_read_rssi *rp = (void *) skb->data;
1380 struct hci_conn *conn;
1381
1382 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1383
1384 if (rp->status)
1385 return;
1386
1387 hci_dev_lock(hdev);
1388
1389 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1390 if (conn)
1391 conn->rssi = rp->rssi;
1392
1393 hci_dev_unlock(hdev);
1394}
1395
1396static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1397{
1398 struct hci_cp_read_tx_power *sent;
1399 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1400 struct hci_conn *conn;
1401
1402 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1403
1404 if (rp->status)
1405 return;
1406
1407 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1408 if (!sent)
1409 return;
1410
1411 hci_dev_lock(hdev);
1412
1413 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1414 if (!conn)
1415 goto unlock;
1416
1417 switch (sent->type) {
1418 case 0x00:
1419 conn->tx_power = rp->tx_power;
1420 break;
1421 case 0x01:
1422 conn->max_tx_power = rp->tx_power;
1423 break;
1424 }
1425
1426unlock:
1427 hci_dev_unlock(hdev);
1428}
1429
1430static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
1431{
1432 u8 status = *((u8 *) skb->data);
1433 u8 *mode;
1434
1435 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1436
1437 if (status)
1438 return;
1439
1440 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
1441 if (mode)
1442 hdev->ssp_debug_mode = *mode;
1443}
1444
1445static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1446{
1447 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1448
1449 if (status) {
1450 hci_conn_check_pending(hdev);
1451 return;
1452 }
1453
1454 set_bit(HCI_INQUIRY, &hdev->flags);
1455}
1456
1457static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1458{
1459 struct hci_cp_create_conn *cp;
1460 struct hci_conn *conn;
1461
1462 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1463
1464 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1465 if (!cp)
1466 return;
1467
1468 hci_dev_lock(hdev);
1469
1470 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1471
1472 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1473
1474 if (status) {
1475 if (conn && conn->state == BT_CONNECT) {
1476 if (status != 0x0c || conn->attempt > 2) {
1477 conn->state = BT_CLOSED;
1478 hci_connect_cfm(conn, status);
1479 hci_conn_del(conn);
1480 } else
1481 conn->state = BT_CONNECT2;
1482 }
1483 } else {
1484 if (!conn) {
1485 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1486 HCI_ROLE_MASTER);
1487 if (!conn)
1488 BT_ERR("No memory for new connection");
1489 }
1490 }
1491
1492 hci_dev_unlock(hdev);
1493}
1494
1495static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1496{
1497 struct hci_cp_add_sco *cp;
1498 struct hci_conn *acl, *sco;
1499 __u16 handle;
1500
1501 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1502
1503 if (!status)
1504 return;
1505
1506 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1507 if (!cp)
1508 return;
1509
1510 handle = __le16_to_cpu(cp->handle);
1511
1512 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1513
1514 hci_dev_lock(hdev);
1515
1516 acl = hci_conn_hash_lookup_handle(hdev, handle);
1517 if (acl) {
1518 sco = acl->link;
1519 if (sco) {
1520 sco->state = BT_CLOSED;
1521
1522 hci_connect_cfm(sco, status);
1523 hci_conn_del(sco);
1524 }
1525 }
1526
1527 hci_dev_unlock(hdev);
1528}
1529
1530static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1531{
1532 struct hci_cp_auth_requested *cp;
1533 struct hci_conn *conn;
1534
1535 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1536
1537 if (!status)
1538 return;
1539
1540 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1541 if (!cp)
1542 return;
1543
1544 hci_dev_lock(hdev);
1545
1546 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1547 if (conn) {
1548 if (conn->state == BT_CONFIG) {
1549 hci_connect_cfm(conn, status);
1550 hci_conn_drop(conn);
1551 }
1552 }
1553
1554 hci_dev_unlock(hdev);
1555}
1556
1557static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1558{
1559 struct hci_cp_set_conn_encrypt *cp;
1560 struct hci_conn *conn;
1561
1562 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1563
1564 if (!status)
1565 return;
1566
1567 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1568 if (!cp)
1569 return;
1570
1571 hci_dev_lock(hdev);
1572
1573 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1574 if (conn) {
1575 if (conn->state == BT_CONFIG) {
1576 hci_connect_cfm(conn, status);
1577 hci_conn_drop(conn);
1578 }
1579 }
1580
1581 hci_dev_unlock(hdev);
1582}
1583
1584static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1585 struct hci_conn *conn)
1586{
1587 if (conn->state != BT_CONFIG || !conn->out)
1588 return 0;
1589
1590 if (conn->pending_sec_level == BT_SECURITY_SDP)
1591 return 0;
1592
1593 /* Only request authentication for SSP connections or non-SSP
1594 * devices with sec_level MEDIUM or HIGH or if MITM protection
1595 * is requested.
1596 */
1597 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1598 conn->pending_sec_level != BT_SECURITY_FIPS &&
1599 conn->pending_sec_level != BT_SECURITY_HIGH &&
1600 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1601 return 0;
1602
1603 return 1;
1604}
1605
1606static int hci_resolve_name(struct hci_dev *hdev,
1607 struct inquiry_entry *e)
1608{
1609 struct hci_cp_remote_name_req cp;
1610
1611 memset(&cp, 0, sizeof(cp));
1612
1613 bacpy(&cp.bdaddr, &e->data.bdaddr);
1614 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1615 cp.pscan_mode = e->data.pscan_mode;
1616 cp.clock_offset = e->data.clock_offset;
1617
1618 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1619}
1620
1621static bool hci_resolve_next_name(struct hci_dev *hdev)
1622{
1623 struct discovery_state *discov = &hdev->discovery;
1624 struct inquiry_entry *e;
1625
1626 if (list_empty(&discov->resolve))
1627 return false;
1628
1629 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1630 if (!e)
1631 return false;
1632
1633 if (hci_resolve_name(hdev, e) == 0) {
1634 e->name_state = NAME_PENDING;
1635 return true;
1636 }
1637
1638 return false;
1639}
1640
1641static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1642 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1643{
1644 struct discovery_state *discov = &hdev->discovery;
1645 struct inquiry_entry *e;
1646
1647 /* Update the mgmt connected state if necessary. Be careful with
1648 * conn objects that exist but are not (yet) connected however.
1649 * Only those in BT_CONFIG or BT_CONNECTED states can be
1650 * considered connected.
1651 */
1652 if (conn &&
1653 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1654 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1655 mgmt_device_connected(hdev, conn, 0, name, name_len);
1656
1657 if (discov->state == DISCOVERY_STOPPED)
1658 return;
1659
1660 if (discov->state == DISCOVERY_STOPPING)
1661 goto discov_complete;
1662
1663 if (discov->state != DISCOVERY_RESOLVING)
1664 return;
1665
1666 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1667 /* If the device was not found in a list of found devices names of which
1668 * are pending. there is no need to continue resolving a next name as it
1669 * will be done upon receiving another Remote Name Request Complete
1670 * Event */
1671 if (!e)
1672 return;
1673
1674 list_del(&e->list);
1675 if (name) {
1676 e->name_state = NAME_KNOWN;
1677 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1678 e->data.rssi, name, name_len);
1679 } else {
1680 e->name_state = NAME_NOT_KNOWN;
1681 }
1682
1683 if (hci_resolve_next_name(hdev))
1684 return;
1685
1686discov_complete:
1687 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1688}
1689
1690static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
1691{
1692 struct hci_cp_remote_name_req *cp;
1693 struct hci_conn *conn;
1694
1695 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1696
1697 /* If successful wait for the name req complete event before
1698 * checking for the need to do authentication */
1699 if (!status)
1700 return;
1701
1702 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
1703 if (!cp)
1704 return;
1705
1706 hci_dev_lock(hdev);
1707
1708 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1709
1710 if (hci_dev_test_flag(hdev, HCI_MGMT))
1711 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1712
1713 if (!conn)
1714 goto unlock;
1715
1716 if (!hci_outgoing_auth_needed(hdev, conn))
1717 goto unlock;
1718
1719 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1720 struct hci_cp_auth_requested auth_cp;
1721
1722 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
1723
1724 auth_cp.handle = __cpu_to_le16(conn->handle);
1725 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
1726 sizeof(auth_cp), &auth_cp);
1727 }
1728
1729unlock:
1730 hci_dev_unlock(hdev);
1731}
1732
1733static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
1734{
1735 struct hci_cp_read_remote_features *cp;
1736 struct hci_conn *conn;
1737
1738 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1739
1740 if (!status)
1741 return;
1742
1743 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
1744 if (!cp)
1745 return;
1746
1747 hci_dev_lock(hdev);
1748
1749 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1750 if (conn) {
1751 if (conn->state == BT_CONFIG) {
1752 hci_connect_cfm(conn, status);
1753 hci_conn_drop(conn);
1754 }
1755 }
1756
1757 hci_dev_unlock(hdev);
1758}
1759
1760static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
1761{
1762 struct hci_cp_read_remote_ext_features *cp;
1763 struct hci_conn *conn;
1764
1765 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1766
1767 if (!status)
1768 return;
1769
1770 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
1771 if (!cp)
1772 return;
1773
1774 hci_dev_lock(hdev);
1775
1776 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1777 if (conn) {
1778 if (conn->state == BT_CONFIG) {
1779 hci_connect_cfm(conn, status);
1780 hci_conn_drop(conn);
1781 }
1782 }
1783
1784 hci_dev_unlock(hdev);
1785}
1786
1787static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
1788{
1789 struct hci_cp_setup_sync_conn *cp;
1790 struct hci_conn *acl, *sco;
1791 __u16 handle;
1792
1793 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1794
1795 if (!status)
1796 return;
1797
1798 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
1799 if (!cp)
1800 return;
1801
1802 handle = __le16_to_cpu(cp->handle);
1803
1804 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1805
1806 hci_dev_lock(hdev);
1807
1808 acl = hci_conn_hash_lookup_handle(hdev, handle);
1809 if (acl) {
1810 sco = acl->link;
1811 if (sco) {
1812 sco->state = BT_CLOSED;
1813
1814 hci_connect_cfm(sco, status);
1815 hci_conn_del(sco);
1816 }
1817 }
1818
1819 hci_dev_unlock(hdev);
1820}
1821
1822static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
1823{
1824 struct hci_cp_sniff_mode *cp;
1825 struct hci_conn *conn;
1826
1827 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1828
1829 if (!status)
1830 return;
1831
1832 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
1833 if (!cp)
1834 return;
1835
1836 hci_dev_lock(hdev);
1837
1838 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1839 if (conn) {
1840 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1841
1842 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1843 hci_sco_setup(conn, status);
1844 }
1845
1846 hci_dev_unlock(hdev);
1847}
1848
1849static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
1850{
1851 struct hci_cp_exit_sniff_mode *cp;
1852 struct hci_conn *conn;
1853
1854 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1855
1856 if (!status)
1857 return;
1858
1859 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
1860 if (!cp)
1861 return;
1862
1863 hci_dev_lock(hdev);
1864
1865 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1866 if (conn) {
1867 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1868
1869 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1870 hci_sco_setup(conn, status);
1871 }
1872
1873 hci_dev_unlock(hdev);
1874}
1875
1876static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
1877{
1878 struct hci_cp_disconnect *cp;
1879 struct hci_conn *conn;
1880
1881 if (!status)
1882 return;
1883
1884 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
1885 if (!cp)
1886 return;
1887
1888 hci_dev_lock(hdev);
1889
1890 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1891 if (conn)
1892 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1893 conn->dst_type, status);
1894
1895 hci_dev_unlock(hdev);
1896}
1897
1898static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
1899{
1900 struct hci_cp_le_create_conn *cp;
1901 struct hci_conn *conn;
1902
1903 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1904
1905 /* All connection failure handling is taken care of by the
1906 * hci_le_conn_failed function which is triggered by the HCI
1907 * request completion callbacks used for connecting.
1908 */
1909 if (status)
1910 return;
1911
1912 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
1913 if (!cp)
1914 return;
1915
1916 hci_dev_lock(hdev);
1917
1918 conn = hci_conn_hash_lookup_le(hdev, &cp->peer_addr,
1919 cp->peer_addr_type);
1920 if (!conn)
1921 goto unlock;
1922
1923 /* Store the initiator and responder address information which
1924 * is needed for SMP. These values will not change during the
1925 * lifetime of the connection.
1926 */
1927 conn->init_addr_type = cp->own_address_type;
1928 if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
1929 bacpy(&conn->init_addr, &hdev->random_addr);
1930 else
1931 bacpy(&conn->init_addr, &hdev->bdaddr);
1932
1933 conn->resp_addr_type = cp->peer_addr_type;
1934 bacpy(&conn->resp_addr, &cp->peer_addr);
1935
1936 /* We don't want the connection attempt to stick around
1937 * indefinitely since LE doesn't have a page timeout concept
1938 * like BR/EDR. Set a timer for any connection that doesn't use
1939 * the white list for connecting.
1940 */
1941 if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
1942 queue_delayed_work(conn->hdev->workqueue,
1943 &conn->le_conn_timeout,
1944 conn->conn_timeout);
1945
1946unlock:
1947 hci_dev_unlock(hdev);
1948}
1949
1950static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
1951{
1952 struct hci_cp_le_read_remote_features *cp;
1953 struct hci_conn *conn;
1954
1955 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1956
1957 if (!status)
1958 return;
1959
1960 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
1961 if (!cp)
1962 return;
1963
1964 hci_dev_lock(hdev);
1965
1966 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1967 if (conn) {
1968 if (conn->state == BT_CONFIG) {
1969 hci_connect_cfm(conn, status);
1970 hci_conn_drop(conn);
1971 }
1972 }
1973
1974 hci_dev_unlock(hdev);
1975}
1976
1977static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
1978{
1979 struct hci_cp_le_start_enc *cp;
1980 struct hci_conn *conn;
1981
1982 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1983
1984 if (!status)
1985 return;
1986
1987 hci_dev_lock(hdev);
1988
1989 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
1990 if (!cp)
1991 goto unlock;
1992
1993 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1994 if (!conn)
1995 goto unlock;
1996
1997 if (conn->state != BT_CONNECTED)
1998 goto unlock;
1999
2000 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2001 hci_conn_drop(conn);
2002
2003unlock:
2004 hci_dev_unlock(hdev);
2005}
2006
2007static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2008{
2009 struct hci_cp_switch_role *cp;
2010 struct hci_conn *conn;
2011
2012 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2013
2014 if (!status)
2015 return;
2016
2017 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2018 if (!cp)
2019 return;
2020
2021 hci_dev_lock(hdev);
2022
2023 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2024 if (conn)
2025 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2026
2027 hci_dev_unlock(hdev);
2028}
2029
2030static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2031{
2032 __u8 status = *((__u8 *) skb->data);
2033 struct discovery_state *discov = &hdev->discovery;
2034 struct inquiry_entry *e;
2035
2036 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2037
2038 hci_conn_check_pending(hdev);
2039
2040 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2041 return;
2042
2043 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2044 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2045
2046 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2047 return;
2048
2049 hci_dev_lock(hdev);
2050
2051 if (discov->state != DISCOVERY_FINDING)
2052 goto unlock;
2053
2054 if (list_empty(&discov->resolve)) {
2055 /* When BR/EDR inquiry is active and no LE scanning is in
2056 * progress, then change discovery state to indicate completion.
2057 *
2058 * When running LE scanning and BR/EDR inquiry simultaneously
2059 * and the LE scan already finished, then change the discovery
2060 * state to indicate completion.
2061 */
2062 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2063 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2064 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2065 goto unlock;
2066 }
2067
2068 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2069 if (e && hci_resolve_name(hdev, e) == 0) {
2070 e->name_state = NAME_PENDING;
2071 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2072 } else {
2073 /* When BR/EDR inquiry is active and no LE scanning is in
2074 * progress, then change discovery state to indicate completion.
2075 *
2076 * When running LE scanning and BR/EDR inquiry simultaneously
2077 * and the LE scan already finished, then change the discovery
2078 * state to indicate completion.
2079 */
2080 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2081 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2082 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2083 }
2084
2085unlock:
2086 hci_dev_unlock(hdev);
2087}
2088
2089static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2090{
2091 struct inquiry_data data;
2092 struct inquiry_info *info = (void *) (skb->data + 1);
2093 int num_rsp = *((__u8 *) skb->data);
2094
2095 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2096
2097 if (!num_rsp)
2098 return;
2099
2100 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2101 return;
2102
2103 hci_dev_lock(hdev);
2104
2105 for (; num_rsp; num_rsp--, info++) {
2106 u32 flags;
2107
2108 bacpy(&data.bdaddr, &info->bdaddr);
2109 data.pscan_rep_mode = info->pscan_rep_mode;
2110 data.pscan_period_mode = info->pscan_period_mode;
2111 data.pscan_mode = info->pscan_mode;
2112 memcpy(data.dev_class, info->dev_class, 3);
2113 data.clock_offset = info->clock_offset;
2114 data.rssi = HCI_RSSI_INVALID;
2115 data.ssp_mode = 0x00;
2116
2117 flags = hci_inquiry_cache_update(hdev, &data, false);
2118
2119 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2120 info->dev_class, HCI_RSSI_INVALID,
2121 flags, NULL, 0, NULL, 0);
2122 }
2123
2124 hci_dev_unlock(hdev);
2125}
2126
2127static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2128{
2129 struct hci_ev_conn_complete *ev = (void *) skb->data;
2130 struct hci_conn *conn;
2131
2132 BT_DBG("%s", hdev->name);
2133
2134 hci_dev_lock(hdev);
2135
2136 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2137 if (!conn) {
2138 if (ev->link_type != SCO_LINK)
2139 goto unlock;
2140
2141 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2142 if (!conn)
2143 goto unlock;
2144
2145 conn->type = SCO_LINK;
2146 }
2147
2148 if (!ev->status) {
2149 conn->handle = __le16_to_cpu(ev->handle);
2150
2151 if (conn->type == ACL_LINK) {
2152 conn->state = BT_CONFIG;
2153 hci_conn_hold(conn);
2154
2155 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2156 !hci_find_link_key(hdev, &ev->bdaddr))
2157 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2158 else
2159 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2160 } else
2161 conn->state = BT_CONNECTED;
2162
2163 hci_debugfs_create_conn(conn);
2164 hci_conn_add_sysfs(conn);
2165
2166 if (test_bit(HCI_AUTH, &hdev->flags))
2167 set_bit(HCI_CONN_AUTH, &conn->flags);
2168
2169 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2170 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2171
2172 /* Get remote features */
2173 if (conn->type == ACL_LINK) {
2174 struct hci_cp_read_remote_features cp;
2175 cp.handle = ev->handle;
2176 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2177 sizeof(cp), &cp);
2178
2179 hci_req_update_scan(hdev);
2180 }
2181
2182 /* Set packet type for incoming connection */
2183 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2184 struct hci_cp_change_conn_ptype cp;
2185 cp.handle = ev->handle;
2186 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2187 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2188 &cp);
2189 }
2190 } else {
2191 conn->state = BT_CLOSED;
2192 if (conn->type == ACL_LINK)
2193 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2194 conn->dst_type, ev->status);
2195 }
2196
2197 if (conn->type == ACL_LINK)
2198 hci_sco_setup(conn, ev->status);
2199
2200 if (ev->status) {
2201 hci_connect_cfm(conn, ev->status);
2202 hci_conn_del(conn);
2203 } else if (ev->link_type != ACL_LINK)
2204 hci_connect_cfm(conn, ev->status);
2205
2206unlock:
2207 hci_dev_unlock(hdev);
2208
2209 hci_conn_check_pending(hdev);
2210}
2211
2212static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2213{
2214 struct hci_cp_reject_conn_req cp;
2215
2216 bacpy(&cp.bdaddr, bdaddr);
2217 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2218 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2219}
2220
2221static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2222{
2223 struct hci_ev_conn_request *ev = (void *) skb->data;
2224 int mask = hdev->link_mode;
2225 struct inquiry_entry *ie;
2226 struct hci_conn *conn;
2227 __u8 flags = 0;
2228
2229 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2230 ev->link_type);
2231
2232 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2233 &flags);
2234
2235 if (!(mask & HCI_LM_ACCEPT)) {
2236 hci_reject_conn(hdev, &ev->bdaddr);
2237 return;
2238 }
2239
2240 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2241 BDADDR_BREDR)) {
2242 hci_reject_conn(hdev, &ev->bdaddr);
2243 return;
2244 }
2245
2246 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2247 * connection. These features are only touched through mgmt so
2248 * only do the checks if HCI_MGMT is set.
2249 */
2250 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
2251 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2252 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2253 BDADDR_BREDR)) {
2254 hci_reject_conn(hdev, &ev->bdaddr);
2255 return;
2256 }
2257
2258 /* Connection accepted */
2259
2260 hci_dev_lock(hdev);
2261
2262 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2263 if (ie)
2264 memcpy(ie->data.dev_class, ev->dev_class, 3);
2265
2266 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2267 &ev->bdaddr);
2268 if (!conn) {
2269 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2270 HCI_ROLE_SLAVE);
2271 if (!conn) {
2272 BT_ERR("No memory for new connection");
2273 hci_dev_unlock(hdev);
2274 return;
2275 }
2276 }
2277
2278 memcpy(conn->dev_class, ev->dev_class, 3);
2279
2280 hci_dev_unlock(hdev);
2281
2282 if (ev->link_type == ACL_LINK ||
2283 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2284 struct hci_cp_accept_conn_req cp;
2285 conn->state = BT_CONNECT;
2286
2287 bacpy(&cp.bdaddr, &ev->bdaddr);
2288
2289 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2290 cp.role = 0x00; /* Become master */
2291 else
2292 cp.role = 0x01; /* Remain slave */
2293
2294 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2295 } else if (!(flags & HCI_PROTO_DEFER)) {
2296 struct hci_cp_accept_sync_conn_req cp;
2297 conn->state = BT_CONNECT;
2298
2299 bacpy(&cp.bdaddr, &ev->bdaddr);
2300 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2301
2302 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2303 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2304 cp.max_latency = cpu_to_le16(0xffff);
2305 cp.content_format = cpu_to_le16(hdev->voice_setting);
2306 cp.retrans_effort = 0xff;
2307
2308 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2309 &cp);
2310 } else {
2311 conn->state = BT_CONNECT2;
2312 hci_connect_cfm(conn, 0);
2313 }
2314}
2315
2316static u8 hci_to_mgmt_reason(u8 err)
2317{
2318 switch (err) {
2319 case HCI_ERROR_CONNECTION_TIMEOUT:
2320 return MGMT_DEV_DISCONN_TIMEOUT;
2321 case HCI_ERROR_REMOTE_USER_TERM:
2322 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2323 case HCI_ERROR_REMOTE_POWER_OFF:
2324 return MGMT_DEV_DISCONN_REMOTE;
2325 case HCI_ERROR_LOCAL_HOST_TERM:
2326 return MGMT_DEV_DISCONN_LOCAL_HOST;
2327 default:
2328 return MGMT_DEV_DISCONN_UNKNOWN;
2329 }
2330}
2331
2332static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2333{
2334 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2335 u8 reason = hci_to_mgmt_reason(ev->reason);
2336 struct hci_conn_params *params;
2337 struct hci_conn *conn;
2338 bool mgmt_connected;
2339 u8 type;
2340
2341 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2342
2343 hci_dev_lock(hdev);
2344
2345 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2346 if (!conn)
2347 goto unlock;
2348
2349 if (ev->status) {
2350 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2351 conn->dst_type, ev->status);
2352 goto unlock;
2353 }
2354
2355 conn->state = BT_CLOSED;
2356
2357 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2358 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2359 reason, mgmt_connected);
2360
2361 if (conn->type == ACL_LINK) {
2362 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2363 hci_remove_link_key(hdev, &conn->dst);
2364
2365 hci_req_update_scan(hdev);
2366 }
2367
2368 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2369 if (params) {
2370 switch (params->auto_connect) {
2371 case HCI_AUTO_CONN_LINK_LOSS:
2372 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2373 break;
2374 /* Fall through */
2375
2376 case HCI_AUTO_CONN_DIRECT:
2377 case HCI_AUTO_CONN_ALWAYS:
2378 list_del_init(¶ms->action);
2379 list_add(¶ms->action, &hdev->pend_le_conns);
2380 hci_update_background_scan(hdev);
2381 break;
2382
2383 default:
2384 break;
2385 }
2386 }
2387
2388 type = conn->type;
2389
2390 hci_disconn_cfm(conn, ev->reason);
2391 hci_conn_del(conn);
2392
2393 /* Re-enable advertising if necessary, since it might
2394 * have been disabled by the connection. From the
2395 * HCI_LE_Set_Advertise_Enable command description in
2396 * the core specification (v4.0):
2397 * "The Controller shall continue advertising until the Host
2398 * issues an LE_Set_Advertise_Enable command with
2399 * Advertising_Enable set to 0x00 (Advertising is disabled)
2400 * or until a connection is created or until the Advertising
2401 * is timed out due to Directed Advertising."
2402 */
2403 if (type == LE_LINK)
2404 hci_req_reenable_advertising(hdev);
2405
2406unlock:
2407 hci_dev_unlock(hdev);
2408}
2409
2410static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2411{
2412 struct hci_ev_auth_complete *ev = (void *) skb->data;
2413 struct hci_conn *conn;
2414
2415 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2416
2417 hci_dev_lock(hdev);
2418
2419 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2420 if (!conn)
2421 goto unlock;
2422
2423 if (!ev->status) {
2424 if (!hci_conn_ssp_enabled(conn) &&
2425 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2426 BT_INFO("re-auth of legacy device is not possible.");
2427 } else {
2428 set_bit(HCI_CONN_AUTH, &conn->flags);
2429 conn->sec_level = conn->pending_sec_level;
2430 }
2431 } else {
2432 mgmt_auth_failed(conn, ev->status);
2433 }
2434
2435 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2436 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2437
2438 if (conn->state == BT_CONFIG) {
2439 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2440 struct hci_cp_set_conn_encrypt cp;
2441 cp.handle = ev->handle;
2442 cp.encrypt = 0x01;
2443 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2444 &cp);
2445 } else {
2446 conn->state = BT_CONNECTED;
2447 hci_connect_cfm(conn, ev->status);
2448 hci_conn_drop(conn);
2449 }
2450 } else {
2451 hci_auth_cfm(conn, ev->status);
2452
2453 hci_conn_hold(conn);
2454 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2455 hci_conn_drop(conn);
2456 }
2457
2458 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2459 if (!ev->status) {
2460 struct hci_cp_set_conn_encrypt cp;
2461 cp.handle = ev->handle;
2462 cp.encrypt = 0x01;
2463 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2464 &cp);
2465 } else {
2466 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2467 hci_encrypt_cfm(conn, ev->status, 0x00);
2468 }
2469 }
2470
2471unlock:
2472 hci_dev_unlock(hdev);
2473}
2474
2475static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2476{
2477 struct hci_ev_remote_name *ev = (void *) skb->data;
2478 struct hci_conn *conn;
2479
2480 BT_DBG("%s", hdev->name);
2481
2482 hci_conn_check_pending(hdev);
2483
2484 hci_dev_lock(hdev);
2485
2486 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2487
2488 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2489 goto check_auth;
2490
2491 if (ev->status == 0)
2492 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2493 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2494 else
2495 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2496
2497check_auth:
2498 if (!conn)
2499 goto unlock;
2500
2501 if (!hci_outgoing_auth_needed(hdev, conn))
2502 goto unlock;
2503
2504 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2505 struct hci_cp_auth_requested cp;
2506
2507 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2508
2509 cp.handle = __cpu_to_le16(conn->handle);
2510 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2511 }
2512
2513unlock:
2514 hci_dev_unlock(hdev);
2515}
2516
2517static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
2518 u16 opcode, struct sk_buff *skb)
2519{
2520 const struct hci_rp_read_enc_key_size *rp;
2521 struct hci_conn *conn;
2522 u16 handle;
2523
2524 BT_DBG("%s status 0x%02x", hdev->name, status);
2525
2526 if (!skb || skb->len < sizeof(*rp)) {
2527 BT_ERR("%s invalid HCI Read Encryption Key Size response",
2528 hdev->name);
2529 return;
2530 }
2531
2532 rp = (void *)skb->data;
2533 handle = le16_to_cpu(rp->handle);
2534
2535 hci_dev_lock(hdev);
2536
2537 conn = hci_conn_hash_lookup_handle(hdev, handle);
2538 if (!conn)
2539 goto unlock;
2540
2541 /* If we fail to read the encryption key size, assume maximum
2542 * (which is the same we do also when this HCI command isn't
2543 * supported.
2544 */
2545 if (rp->status) {
2546 BT_ERR("%s failed to read key size for handle %u", hdev->name,
2547 handle);
2548 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2549 } else {
2550 conn->enc_key_size = rp->key_size;
2551 }
2552
2553 if (conn->state == BT_CONFIG) {
2554 conn->state = BT_CONNECTED;
2555 hci_connect_cfm(conn, 0);
2556 hci_conn_drop(conn);
2557 } else {
2558 u8 encrypt;
2559
2560 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2561 encrypt = 0x00;
2562 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2563 encrypt = 0x02;
2564 else
2565 encrypt = 0x01;
2566
2567 hci_encrypt_cfm(conn, 0, encrypt);
2568 }
2569
2570unlock:
2571 hci_dev_unlock(hdev);
2572}
2573
2574static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2575{
2576 struct hci_ev_encrypt_change *ev = (void *) skb->data;
2577 struct hci_conn *conn;
2578
2579 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2580
2581 hci_dev_lock(hdev);
2582
2583 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2584 if (!conn)
2585 goto unlock;
2586
2587 if (!ev->status) {
2588 if (ev->encrypt) {
2589 /* Encryption implies authentication */
2590 set_bit(HCI_CONN_AUTH, &conn->flags);
2591 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2592 conn->sec_level = conn->pending_sec_level;
2593
2594 /* P-256 authentication key implies FIPS */
2595 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2596 set_bit(HCI_CONN_FIPS, &conn->flags);
2597
2598 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
2599 conn->type == LE_LINK)
2600 set_bit(HCI_CONN_AES_CCM, &conn->flags);
2601 } else {
2602 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2603 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
2604 }
2605 }
2606
2607 /* We should disregard the current RPA and generate a new one
2608 * whenever the encryption procedure fails.
2609 */
2610 if (ev->status && conn->type == LE_LINK)
2611 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
2612
2613 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2614
2615 if (ev->status && conn->state == BT_CONNECTED) {
2616 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2617 hci_conn_drop(conn);
2618 goto unlock;
2619 }
2620
2621 /* In Secure Connections Only mode, do not allow any connections
2622 * that are not encrypted with AES-CCM using a P-256 authenticated
2623 * combination key.
2624 */
2625 if (hci_dev_test_flag(hdev, HCI_SC_ONLY) &&
2626 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
2627 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
2628 hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
2629 hci_conn_drop(conn);
2630 goto unlock;
2631 }
2632
2633 /* Try reading the encryption key size for encrypted ACL links */
2634 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
2635 struct hci_cp_read_enc_key_size cp;
2636 struct hci_request req;
2637
2638 /* Only send HCI_Read_Encryption_Key_Size if the
2639 * controller really supports it. If it doesn't, assume
2640 * the default size (16).
2641 */
2642 if (!(hdev->commands[20] & 0x10)) {
2643 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2644 goto notify;
2645 }
2646
2647 hci_req_init(&req, hdev);
2648
2649 cp.handle = cpu_to_le16(conn->handle);
2650 hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp);
2651
2652 if (hci_req_run_skb(&req, read_enc_key_size_complete)) {
2653 BT_ERR("Sending HCI Read Encryption Key Size failed");
2654 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2655 goto notify;
2656 }
2657
2658 goto unlock;
2659 }
2660
2661notify:
2662 if (conn->state == BT_CONFIG) {
2663 if (!ev->status)
2664 conn->state = BT_CONNECTED;
2665
2666 hci_connect_cfm(conn, ev->status);
2667 hci_conn_drop(conn);
2668 } else
2669 hci_encrypt_cfm(conn, ev->status, ev->encrypt);
2670
2671unlock:
2672 hci_dev_unlock(hdev);
2673}
2674
2675static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
2676 struct sk_buff *skb)
2677{
2678 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
2679 struct hci_conn *conn;
2680
2681 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2682
2683 hci_dev_lock(hdev);
2684
2685 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2686 if (conn) {
2687 if (!ev->status)
2688 set_bit(HCI_CONN_SECURE, &conn->flags);
2689
2690 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2691
2692 hci_key_change_cfm(conn, ev->status);
2693 }
2694
2695 hci_dev_unlock(hdev);
2696}
2697
2698static void hci_remote_features_evt(struct hci_dev *hdev,
2699 struct sk_buff *skb)
2700{
2701 struct hci_ev_remote_features *ev = (void *) skb->data;
2702 struct hci_conn *conn;
2703
2704 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2705
2706 hci_dev_lock(hdev);
2707
2708 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2709 if (!conn)
2710 goto unlock;
2711
2712 if (!ev->status)
2713 memcpy(conn->features[0], ev->features, 8);
2714
2715 if (conn->state != BT_CONFIG)
2716 goto unlock;
2717
2718 if (!ev->status && lmp_ext_feat_capable(hdev) &&
2719 lmp_ext_feat_capable(conn)) {
2720 struct hci_cp_read_remote_ext_features cp;
2721 cp.handle = ev->handle;
2722 cp.page = 0x01;
2723 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
2724 sizeof(cp), &cp);
2725 goto unlock;
2726 }
2727
2728 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
2729 struct hci_cp_remote_name_req cp;
2730 memset(&cp, 0, sizeof(cp));
2731 bacpy(&cp.bdaddr, &conn->dst);
2732 cp.pscan_rep_mode = 0x02;
2733 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2734 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2735 mgmt_device_connected(hdev, conn, 0, NULL, 0);
2736
2737 if (!hci_outgoing_auth_needed(hdev, conn)) {
2738 conn->state = BT_CONNECTED;
2739 hci_connect_cfm(conn, ev->status);
2740 hci_conn_drop(conn);
2741 }
2742
2743unlock:
2744 hci_dev_unlock(hdev);
2745}
2746
2747static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
2748 u16 *opcode, u8 *status,
2749 hci_req_complete_t *req_complete,
2750 hci_req_complete_skb_t *req_complete_skb)
2751{
2752 struct hci_ev_cmd_complete *ev = (void *) skb->data;
2753
2754 *opcode = __le16_to_cpu(ev->opcode);
2755 *status = skb->data[sizeof(*ev)];
2756
2757 skb_pull(skb, sizeof(*ev));
2758
2759 switch (*opcode) {
2760 case HCI_OP_INQUIRY_CANCEL:
2761 hci_cc_inquiry_cancel(hdev, skb);
2762 break;
2763
2764 case HCI_OP_PERIODIC_INQ:
2765 hci_cc_periodic_inq(hdev, skb);
2766 break;
2767
2768 case HCI_OP_EXIT_PERIODIC_INQ:
2769 hci_cc_exit_periodic_inq(hdev, skb);
2770 break;
2771
2772 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
2773 hci_cc_remote_name_req_cancel(hdev, skb);
2774 break;
2775
2776 case HCI_OP_ROLE_DISCOVERY:
2777 hci_cc_role_discovery(hdev, skb);
2778 break;
2779
2780 case HCI_OP_READ_LINK_POLICY:
2781 hci_cc_read_link_policy(hdev, skb);
2782 break;
2783
2784 case HCI_OP_WRITE_LINK_POLICY:
2785 hci_cc_write_link_policy(hdev, skb);
2786 break;
2787
2788 case HCI_OP_READ_DEF_LINK_POLICY:
2789 hci_cc_read_def_link_policy(hdev, skb);
2790 break;
2791
2792 case HCI_OP_WRITE_DEF_LINK_POLICY:
2793 hci_cc_write_def_link_policy(hdev, skb);
2794 break;
2795
2796 case HCI_OP_RESET:
2797 hci_cc_reset(hdev, skb);
2798 break;
2799
2800 case HCI_OP_READ_STORED_LINK_KEY:
2801 hci_cc_read_stored_link_key(hdev, skb);
2802 break;
2803
2804 case HCI_OP_DELETE_STORED_LINK_KEY:
2805 hci_cc_delete_stored_link_key(hdev, skb);
2806 break;
2807
2808 case HCI_OP_WRITE_LOCAL_NAME:
2809 hci_cc_write_local_name(hdev, skb);
2810 break;
2811
2812 case HCI_OP_READ_LOCAL_NAME:
2813 hci_cc_read_local_name(hdev, skb);
2814 break;
2815
2816 case HCI_OP_WRITE_AUTH_ENABLE:
2817 hci_cc_write_auth_enable(hdev, skb);
2818 break;
2819
2820 case HCI_OP_WRITE_ENCRYPT_MODE:
2821 hci_cc_write_encrypt_mode(hdev, skb);
2822 break;
2823
2824 case HCI_OP_WRITE_SCAN_ENABLE:
2825 hci_cc_write_scan_enable(hdev, skb);
2826 break;
2827
2828 case HCI_OP_READ_CLASS_OF_DEV:
2829 hci_cc_read_class_of_dev(hdev, skb);
2830 break;
2831
2832 case HCI_OP_WRITE_CLASS_OF_DEV:
2833 hci_cc_write_class_of_dev(hdev, skb);
2834 break;
2835
2836 case HCI_OP_READ_VOICE_SETTING:
2837 hci_cc_read_voice_setting(hdev, skb);
2838 break;
2839
2840 case HCI_OP_WRITE_VOICE_SETTING:
2841 hci_cc_write_voice_setting(hdev, skb);
2842 break;
2843
2844 case HCI_OP_READ_NUM_SUPPORTED_IAC:
2845 hci_cc_read_num_supported_iac(hdev, skb);
2846 break;
2847
2848 case HCI_OP_WRITE_SSP_MODE:
2849 hci_cc_write_ssp_mode(hdev, skb);
2850 break;
2851
2852 case HCI_OP_WRITE_SC_SUPPORT:
2853 hci_cc_write_sc_support(hdev, skb);
2854 break;
2855
2856 case HCI_OP_READ_LOCAL_VERSION:
2857 hci_cc_read_local_version(hdev, skb);
2858 break;
2859
2860 case HCI_OP_READ_LOCAL_COMMANDS:
2861 hci_cc_read_local_commands(hdev, skb);
2862 break;
2863
2864 case HCI_OP_READ_LOCAL_FEATURES:
2865 hci_cc_read_local_features(hdev, skb);
2866 break;
2867
2868 case HCI_OP_READ_LOCAL_EXT_FEATURES:
2869 hci_cc_read_local_ext_features(hdev, skb);
2870 break;
2871
2872 case HCI_OP_READ_BUFFER_SIZE:
2873 hci_cc_read_buffer_size(hdev, skb);
2874 break;
2875
2876 case HCI_OP_READ_BD_ADDR:
2877 hci_cc_read_bd_addr(hdev, skb);
2878 break;
2879
2880 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
2881 hci_cc_read_page_scan_activity(hdev, skb);
2882 break;
2883
2884 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
2885 hci_cc_write_page_scan_activity(hdev, skb);
2886 break;
2887
2888 case HCI_OP_READ_PAGE_SCAN_TYPE:
2889 hci_cc_read_page_scan_type(hdev, skb);
2890 break;
2891
2892 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
2893 hci_cc_write_page_scan_type(hdev, skb);
2894 break;
2895
2896 case HCI_OP_READ_DATA_BLOCK_SIZE:
2897 hci_cc_read_data_block_size(hdev, skb);
2898 break;
2899
2900 case HCI_OP_READ_FLOW_CONTROL_MODE:
2901 hci_cc_read_flow_control_mode(hdev, skb);
2902 break;
2903
2904 case HCI_OP_READ_LOCAL_AMP_INFO:
2905 hci_cc_read_local_amp_info(hdev, skb);
2906 break;
2907
2908 case HCI_OP_READ_CLOCK:
2909 hci_cc_read_clock(hdev, skb);
2910 break;
2911
2912 case HCI_OP_READ_INQ_RSP_TX_POWER:
2913 hci_cc_read_inq_rsp_tx_power(hdev, skb);
2914 break;
2915
2916 case HCI_OP_PIN_CODE_REPLY:
2917 hci_cc_pin_code_reply(hdev, skb);
2918 break;
2919
2920 case HCI_OP_PIN_CODE_NEG_REPLY:
2921 hci_cc_pin_code_neg_reply(hdev, skb);
2922 break;
2923
2924 case HCI_OP_READ_LOCAL_OOB_DATA:
2925 hci_cc_read_local_oob_data(hdev, skb);
2926 break;
2927
2928 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
2929 hci_cc_read_local_oob_ext_data(hdev, skb);
2930 break;
2931
2932 case HCI_OP_LE_READ_BUFFER_SIZE:
2933 hci_cc_le_read_buffer_size(hdev, skb);
2934 break;
2935
2936 case HCI_OP_LE_READ_LOCAL_FEATURES:
2937 hci_cc_le_read_local_features(hdev, skb);
2938 break;
2939
2940 case HCI_OP_LE_READ_ADV_TX_POWER:
2941 hci_cc_le_read_adv_tx_power(hdev, skb);
2942 break;
2943
2944 case HCI_OP_USER_CONFIRM_REPLY:
2945 hci_cc_user_confirm_reply(hdev, skb);
2946 break;
2947
2948 case HCI_OP_USER_CONFIRM_NEG_REPLY:
2949 hci_cc_user_confirm_neg_reply(hdev, skb);
2950 break;
2951
2952 case HCI_OP_USER_PASSKEY_REPLY:
2953 hci_cc_user_passkey_reply(hdev, skb);
2954 break;
2955
2956 case HCI_OP_USER_PASSKEY_NEG_REPLY:
2957 hci_cc_user_passkey_neg_reply(hdev, skb);
2958 break;
2959
2960 case HCI_OP_LE_SET_RANDOM_ADDR:
2961 hci_cc_le_set_random_addr(hdev, skb);
2962 break;
2963
2964 case HCI_OP_LE_SET_ADV_ENABLE:
2965 hci_cc_le_set_adv_enable(hdev, skb);
2966 break;
2967
2968 case HCI_OP_LE_SET_SCAN_PARAM:
2969 hci_cc_le_set_scan_param(hdev, skb);
2970 break;
2971
2972 case HCI_OP_LE_SET_SCAN_ENABLE:
2973 hci_cc_le_set_scan_enable(hdev, skb);
2974 break;
2975
2976 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
2977 hci_cc_le_read_white_list_size(hdev, skb);
2978 break;
2979
2980 case HCI_OP_LE_CLEAR_WHITE_LIST:
2981 hci_cc_le_clear_white_list(hdev, skb);
2982 break;
2983
2984 case HCI_OP_LE_ADD_TO_WHITE_LIST:
2985 hci_cc_le_add_to_white_list(hdev, skb);
2986 break;
2987
2988 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
2989 hci_cc_le_del_from_white_list(hdev, skb);
2990 break;
2991
2992 case HCI_OP_LE_READ_SUPPORTED_STATES:
2993 hci_cc_le_read_supported_states(hdev, skb);
2994 break;
2995
2996 case HCI_OP_LE_READ_DEF_DATA_LEN:
2997 hci_cc_le_read_def_data_len(hdev, skb);
2998 break;
2999
3000 case HCI_OP_LE_WRITE_DEF_DATA_LEN:
3001 hci_cc_le_write_def_data_len(hdev, skb);
3002 break;
3003
3004 case HCI_OP_LE_READ_MAX_DATA_LEN:
3005 hci_cc_le_read_max_data_len(hdev, skb);
3006 break;
3007
3008 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
3009 hci_cc_write_le_host_supported(hdev, skb);
3010 break;
3011
3012 case HCI_OP_LE_SET_ADV_PARAM:
3013 hci_cc_set_adv_param(hdev, skb);
3014 break;
3015
3016 case HCI_OP_READ_RSSI:
3017 hci_cc_read_rssi(hdev, skb);
3018 break;
3019
3020 case HCI_OP_READ_TX_POWER:
3021 hci_cc_read_tx_power(hdev, skb);
3022 break;
3023
3024 case HCI_OP_WRITE_SSP_DEBUG_MODE:
3025 hci_cc_write_ssp_debug_mode(hdev, skb);
3026 break;
3027
3028 default:
3029 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3030 break;
3031 }
3032
3033 if (*opcode != HCI_OP_NOP)
3034 cancel_delayed_work(&hdev->cmd_timer);
3035
3036 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3037 atomic_set(&hdev->cmd_cnt, 1);
3038
3039 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
3040 req_complete_skb);
3041
3042 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3043 queue_work(hdev->workqueue, &hdev->cmd_work);
3044}
3045
3046static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
3047 u16 *opcode, u8 *status,
3048 hci_req_complete_t *req_complete,
3049 hci_req_complete_skb_t *req_complete_skb)
3050{
3051 struct hci_ev_cmd_status *ev = (void *) skb->data;
3052
3053 skb_pull(skb, sizeof(*ev));
3054
3055 *opcode = __le16_to_cpu(ev->opcode);
3056 *status = ev->status;
3057
3058 switch (*opcode) {
3059 case HCI_OP_INQUIRY:
3060 hci_cs_inquiry(hdev, ev->status);
3061 break;
3062
3063 case HCI_OP_CREATE_CONN:
3064 hci_cs_create_conn(hdev, ev->status);
3065 break;
3066
3067 case HCI_OP_DISCONNECT:
3068 hci_cs_disconnect(hdev, ev->status);
3069 break;
3070
3071 case HCI_OP_ADD_SCO:
3072 hci_cs_add_sco(hdev, ev->status);
3073 break;
3074
3075 case HCI_OP_AUTH_REQUESTED:
3076 hci_cs_auth_requested(hdev, ev->status);
3077 break;
3078
3079 case HCI_OP_SET_CONN_ENCRYPT:
3080 hci_cs_set_conn_encrypt(hdev, ev->status);
3081 break;
3082
3083 case HCI_OP_REMOTE_NAME_REQ:
3084 hci_cs_remote_name_req(hdev, ev->status);
3085 break;
3086
3087 case HCI_OP_READ_REMOTE_FEATURES:
3088 hci_cs_read_remote_features(hdev, ev->status);
3089 break;
3090
3091 case HCI_OP_READ_REMOTE_EXT_FEATURES:
3092 hci_cs_read_remote_ext_features(hdev, ev->status);
3093 break;
3094
3095 case HCI_OP_SETUP_SYNC_CONN:
3096 hci_cs_setup_sync_conn(hdev, ev->status);
3097 break;
3098
3099 case HCI_OP_SNIFF_MODE:
3100 hci_cs_sniff_mode(hdev, ev->status);
3101 break;
3102
3103 case HCI_OP_EXIT_SNIFF_MODE:
3104 hci_cs_exit_sniff_mode(hdev, ev->status);
3105 break;
3106
3107 case HCI_OP_SWITCH_ROLE:
3108 hci_cs_switch_role(hdev, ev->status);
3109 break;
3110
3111 case HCI_OP_LE_CREATE_CONN:
3112 hci_cs_le_create_conn(hdev, ev->status);
3113 break;
3114
3115 case HCI_OP_LE_READ_REMOTE_FEATURES:
3116 hci_cs_le_read_remote_features(hdev, ev->status);
3117 break;
3118
3119 case HCI_OP_LE_START_ENC:
3120 hci_cs_le_start_enc(hdev, ev->status);
3121 break;
3122
3123 default:
3124 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3125 break;
3126 }
3127
3128 if (*opcode != HCI_OP_NOP)
3129 cancel_delayed_work(&hdev->cmd_timer);
3130
3131 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3132 atomic_set(&hdev->cmd_cnt, 1);
3133
3134 /* Indicate request completion if the command failed. Also, if
3135 * we're not waiting for a special event and we get a success
3136 * command status we should try to flag the request as completed
3137 * (since for this kind of commands there will not be a command
3138 * complete event).
3139 */
3140 if (ev->status ||
3141 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event))
3142 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
3143 req_complete_skb);
3144
3145 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3146 queue_work(hdev->workqueue, &hdev->cmd_work);
3147}
3148
3149static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
3150{
3151 struct hci_ev_hardware_error *ev = (void *) skb->data;
3152
3153 hdev->hw_error_code = ev->code;
3154
3155 queue_work(hdev->req_workqueue, &hdev->error_reset);
3156}
3157
3158static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3159{
3160 struct hci_ev_role_change *ev = (void *) skb->data;
3161 struct hci_conn *conn;
3162
3163 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3164
3165 hci_dev_lock(hdev);
3166
3167 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3168 if (conn) {
3169 if (!ev->status)
3170 conn->role = ev->role;
3171
3172 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3173
3174 hci_role_switch_cfm(conn, ev->status, ev->role);
3175 }
3176
3177 hci_dev_unlock(hdev);
3178}
3179
3180static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3181{
3182 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
3183 int i;
3184
3185 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
3186 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3187 return;
3188 }
3189
3190 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3191 ev->num_hndl * sizeof(struct hci_comp_pkts_info)) {
3192 BT_DBG("%s bad parameters", hdev->name);
3193 return;
3194 }
3195
3196 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
3197
3198 for (i = 0; i < ev->num_hndl; i++) {
3199 struct hci_comp_pkts_info *info = &ev->handles[i];
3200 struct hci_conn *conn;
3201 __u16 handle, count;
3202
3203 handle = __le16_to_cpu(info->handle);
3204 count = __le16_to_cpu(info->count);
3205
3206 conn = hci_conn_hash_lookup_handle(hdev, handle);
3207 if (!conn)
3208 continue;
3209
3210 conn->sent -= count;
3211
3212 switch (conn->type) {
3213 case ACL_LINK:
3214 hdev->acl_cnt += count;
3215 if (hdev->acl_cnt > hdev->acl_pkts)
3216 hdev->acl_cnt = hdev->acl_pkts;
3217 break;
3218
3219 case LE_LINK:
3220 if (hdev->le_pkts) {
3221 hdev->le_cnt += count;
3222 if (hdev->le_cnt > hdev->le_pkts)
3223 hdev->le_cnt = hdev->le_pkts;
3224 } else {
3225 hdev->acl_cnt += count;
3226 if (hdev->acl_cnt > hdev->acl_pkts)
3227 hdev->acl_cnt = hdev->acl_pkts;
3228 }
3229 break;
3230
3231 case SCO_LINK:
3232 hdev->sco_cnt += count;
3233 if (hdev->sco_cnt > hdev->sco_pkts)
3234 hdev->sco_cnt = hdev->sco_pkts;
3235 break;
3236
3237 default:
3238 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3239 break;
3240 }
3241 }
3242
3243 queue_work(hdev->workqueue, &hdev->tx_work);
3244}
3245
3246static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3247 __u16 handle)
3248{
3249 struct hci_chan *chan;
3250
3251 switch (hdev->dev_type) {
3252 case HCI_BREDR:
3253 return hci_conn_hash_lookup_handle(hdev, handle);
3254 case HCI_AMP:
3255 chan = hci_chan_lookup_handle(hdev, handle);
3256 if (chan)
3257 return chan->conn;
3258 break;
3259 default:
3260 BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type);
3261 break;
3262 }
3263
3264 return NULL;
3265}
3266
3267static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3268{
3269 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3270 int i;
3271
3272 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3273 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3274 return;
3275 }
3276
3277 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3278 ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3279 BT_DBG("%s bad parameters", hdev->name);
3280 return;
3281 }
3282
3283 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3284 ev->num_hndl);
3285
3286 for (i = 0; i < ev->num_hndl; i++) {
3287 struct hci_comp_blocks_info *info = &ev->handles[i];
3288 struct hci_conn *conn = NULL;
3289 __u16 handle, block_count;
3290
3291 handle = __le16_to_cpu(info->handle);
3292 block_count = __le16_to_cpu(info->blocks);
3293
3294 conn = __hci_conn_lookup_handle(hdev, handle);
3295 if (!conn)
3296 continue;
3297
3298 conn->sent -= block_count;
3299
3300 switch (conn->type) {
3301 case ACL_LINK:
3302 case AMP_LINK:
3303 hdev->block_cnt += block_count;
3304 if (hdev->block_cnt > hdev->num_blocks)
3305 hdev->block_cnt = hdev->num_blocks;
3306 break;
3307
3308 default:
3309 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3310 break;
3311 }
3312 }
3313
3314 queue_work(hdev->workqueue, &hdev->tx_work);
3315}
3316
3317static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3318{
3319 struct hci_ev_mode_change *ev = (void *) skb->data;
3320 struct hci_conn *conn;
3321
3322 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3323
3324 hci_dev_lock(hdev);
3325
3326 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3327 if (conn) {
3328 conn->mode = ev->mode;
3329
3330 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3331 &conn->flags)) {
3332 if (conn->mode == HCI_CM_ACTIVE)
3333 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3334 else
3335 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3336 }
3337
3338 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3339 hci_sco_setup(conn, ev->status);
3340 }
3341
3342 hci_dev_unlock(hdev);
3343}
3344
3345static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3346{
3347 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3348 struct hci_conn *conn;
3349
3350 BT_DBG("%s", hdev->name);
3351
3352 hci_dev_lock(hdev);
3353
3354 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3355 if (!conn)
3356 goto unlock;
3357
3358 if (conn->state == BT_CONNECTED) {
3359 hci_conn_hold(conn);
3360 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3361 hci_conn_drop(conn);
3362 }
3363
3364 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3365 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3366 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3367 sizeof(ev->bdaddr), &ev->bdaddr);
3368 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3369 u8 secure;
3370
3371 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3372 secure = 1;
3373 else
3374 secure = 0;
3375
3376 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3377 }
3378
3379unlock:
3380 hci_dev_unlock(hdev);
3381}
3382
3383static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3384{
3385 if (key_type == HCI_LK_CHANGED_COMBINATION)
3386 return;
3387
3388 conn->pin_length = pin_len;
3389 conn->key_type = key_type;
3390
3391 switch (key_type) {
3392 case HCI_LK_LOCAL_UNIT:
3393 case HCI_LK_REMOTE_UNIT:
3394 case HCI_LK_DEBUG_COMBINATION:
3395 return;
3396 case HCI_LK_COMBINATION:
3397 if (pin_len == 16)
3398 conn->pending_sec_level = BT_SECURITY_HIGH;
3399 else
3400 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3401 break;
3402 case HCI_LK_UNAUTH_COMBINATION_P192:
3403 case HCI_LK_UNAUTH_COMBINATION_P256:
3404 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3405 break;
3406 case HCI_LK_AUTH_COMBINATION_P192:
3407 conn->pending_sec_level = BT_SECURITY_HIGH;
3408 break;
3409 case HCI_LK_AUTH_COMBINATION_P256:
3410 conn->pending_sec_level = BT_SECURITY_FIPS;
3411 break;
3412 }
3413}
3414
3415static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3416{
3417 struct hci_ev_link_key_req *ev = (void *) skb->data;
3418 struct hci_cp_link_key_reply cp;
3419 struct hci_conn *conn;
3420 struct link_key *key;
3421
3422 BT_DBG("%s", hdev->name);
3423
3424 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3425 return;
3426
3427 hci_dev_lock(hdev);
3428
3429 key = hci_find_link_key(hdev, &ev->bdaddr);
3430 if (!key) {
3431 BT_DBG("%s link key not found for %pMR", hdev->name,
3432 &ev->bdaddr);
3433 goto not_found;
3434 }
3435
3436 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3437 &ev->bdaddr);
3438
3439 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3440 if (conn) {
3441 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3442
3443 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3444 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3445 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3446 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3447 goto not_found;
3448 }
3449
3450 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3451 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3452 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3453 BT_DBG("%s ignoring key unauthenticated for high security",
3454 hdev->name);
3455 goto not_found;
3456 }
3457
3458 conn_set_key(conn, key->type, key->pin_len);
3459 }
3460
3461 bacpy(&cp.bdaddr, &ev->bdaddr);
3462 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3463
3464 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3465
3466 hci_dev_unlock(hdev);
3467
3468 return;
3469
3470not_found:
3471 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3472 hci_dev_unlock(hdev);
3473}
3474
3475static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3476{
3477 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3478 struct hci_conn *conn;
3479 struct link_key *key;
3480 bool persistent;
3481 u8 pin_len = 0;
3482
3483 BT_DBG("%s", hdev->name);
3484
3485 hci_dev_lock(hdev);
3486
3487 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3488 if (!conn)
3489 goto unlock;
3490
3491 hci_conn_hold(conn);
3492 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3493 hci_conn_drop(conn);
3494
3495 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3496 conn_set_key(conn, ev->key_type, conn->pin_length);
3497
3498 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3499 goto unlock;
3500
3501 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3502 ev->key_type, pin_len, &persistent);
3503 if (!key)
3504 goto unlock;
3505
3506 /* Update connection information since adding the key will have
3507 * fixed up the type in the case of changed combination keys.
3508 */
3509 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
3510 conn_set_key(conn, key->type, key->pin_len);
3511
3512 mgmt_new_link_key(hdev, key, persistent);
3513
3514 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3515 * is set. If it's not set simply remove the key from the kernel
3516 * list (we've still notified user space about it but with
3517 * store_hint being 0).
3518 */
3519 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3520 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
3521 list_del_rcu(&key->list);
3522 kfree_rcu(key, rcu);
3523 goto unlock;
3524 }
3525
3526 if (persistent)
3527 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3528 else
3529 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3530
3531unlock:
3532 hci_dev_unlock(hdev);
3533}
3534
3535static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3536{
3537 struct hci_ev_clock_offset *ev = (void *) skb->data;
3538 struct hci_conn *conn;
3539
3540 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3541
3542 hci_dev_lock(hdev);
3543
3544 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3545 if (conn && !ev->status) {
3546 struct inquiry_entry *ie;
3547
3548 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3549 if (ie) {
3550 ie->data.clock_offset = ev->clock_offset;
3551 ie->timestamp = jiffies;
3552 }
3553 }
3554
3555 hci_dev_unlock(hdev);
3556}
3557
3558static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3559{
3560 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
3561 struct hci_conn *conn;
3562
3563 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3564
3565 hci_dev_lock(hdev);
3566
3567 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3568 if (conn && !ev->status)
3569 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
3570
3571 hci_dev_unlock(hdev);
3572}
3573
3574static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3575{
3576 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3577 struct inquiry_entry *ie;
3578
3579 BT_DBG("%s", hdev->name);
3580
3581 hci_dev_lock(hdev);
3582
3583 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3584 if (ie) {
3585 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
3586 ie->timestamp = jiffies;
3587 }
3588
3589 hci_dev_unlock(hdev);
3590}
3591
3592static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
3593 struct sk_buff *skb)
3594{
3595 struct inquiry_data data;
3596 int num_rsp = *((__u8 *) skb->data);
3597
3598 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3599
3600 if (!num_rsp)
3601 return;
3602
3603 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3604 return;
3605
3606 hci_dev_lock(hdev);
3607
3608 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3609 struct inquiry_info_with_rssi_and_pscan_mode *info;
3610 info = (void *) (skb->data + 1);
3611
3612 for (; num_rsp; num_rsp--, info++) {
3613 u32 flags;
3614
3615 bacpy(&data.bdaddr, &info->bdaddr);
3616 data.pscan_rep_mode = info->pscan_rep_mode;
3617 data.pscan_period_mode = info->pscan_period_mode;
3618 data.pscan_mode = info->pscan_mode;
3619 memcpy(data.dev_class, info->dev_class, 3);
3620 data.clock_offset = info->clock_offset;
3621 data.rssi = info->rssi;
3622 data.ssp_mode = 0x00;
3623
3624 flags = hci_inquiry_cache_update(hdev, &data, false);
3625
3626 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3627 info->dev_class, info->rssi,
3628 flags, NULL, 0, NULL, 0);
3629 }
3630 } else {
3631 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
3632
3633 for (; num_rsp; num_rsp--, info++) {
3634 u32 flags;
3635
3636 bacpy(&data.bdaddr, &info->bdaddr);
3637 data.pscan_rep_mode = info->pscan_rep_mode;
3638 data.pscan_period_mode = info->pscan_period_mode;
3639 data.pscan_mode = 0x00;
3640 memcpy(data.dev_class, info->dev_class, 3);
3641 data.clock_offset = info->clock_offset;
3642 data.rssi = info->rssi;
3643 data.ssp_mode = 0x00;
3644
3645 flags = hci_inquiry_cache_update(hdev, &data, false);
3646
3647 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3648 info->dev_class, info->rssi,
3649 flags, NULL, 0, NULL, 0);
3650 }
3651 }
3652
3653 hci_dev_unlock(hdev);
3654}
3655
3656static void hci_remote_ext_features_evt(struct hci_dev *hdev,
3657 struct sk_buff *skb)
3658{
3659 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
3660 struct hci_conn *conn;
3661
3662 BT_DBG("%s", hdev->name);
3663
3664 hci_dev_lock(hdev);
3665
3666 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3667 if (!conn)
3668 goto unlock;
3669
3670 if (ev->page < HCI_MAX_PAGES)
3671 memcpy(conn->features[ev->page], ev->features, 8);
3672
3673 if (!ev->status && ev->page == 0x01) {
3674 struct inquiry_entry *ie;
3675
3676 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3677 if (ie)
3678 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3679
3680 if (ev->features[0] & LMP_HOST_SSP) {
3681 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3682 } else {
3683 /* It is mandatory by the Bluetooth specification that
3684 * Extended Inquiry Results are only used when Secure
3685 * Simple Pairing is enabled, but some devices violate
3686 * this.
3687 *
3688 * To make these devices work, the internal SSP
3689 * enabled flag needs to be cleared if the remote host
3690 * features do not indicate SSP support */
3691 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3692 }
3693
3694 if (ev->features[0] & LMP_HOST_SC)
3695 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3696 }
3697
3698 if (conn->state != BT_CONFIG)
3699 goto unlock;
3700
3701 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3702 struct hci_cp_remote_name_req cp;
3703 memset(&cp, 0, sizeof(cp));
3704 bacpy(&cp.bdaddr, &conn->dst);
3705 cp.pscan_rep_mode = 0x02;
3706 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3707 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3708 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3709
3710 if (!hci_outgoing_auth_needed(hdev, conn)) {
3711 conn->state = BT_CONNECTED;
3712 hci_connect_cfm(conn, ev->status);
3713 hci_conn_drop(conn);
3714 }
3715
3716unlock:
3717 hci_dev_unlock(hdev);
3718}
3719
3720static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
3721 struct sk_buff *skb)
3722{
3723 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
3724 struct hci_conn *conn;
3725
3726 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3727
3728 hci_dev_lock(hdev);
3729
3730 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3731 if (!conn) {
3732 if (ev->link_type == ESCO_LINK)
3733 goto unlock;
3734
3735 /* When the link type in the event indicates SCO connection
3736 * and lookup of the connection object fails, then check
3737 * if an eSCO connection object exists.
3738 *
3739 * The core limits the synchronous connections to either
3740 * SCO or eSCO. The eSCO connection is preferred and tried
3741 * to be setup first and until successfully established,
3742 * the link type will be hinted as eSCO.
3743 */
3744 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
3745 if (!conn)
3746 goto unlock;
3747 }
3748
3749 switch (ev->status) {
3750 case 0x00:
3751 conn->handle = __le16_to_cpu(ev->handle);
3752 conn->state = BT_CONNECTED;
3753 conn->type = ev->link_type;
3754
3755 hci_debugfs_create_conn(conn);
3756 hci_conn_add_sysfs(conn);
3757 break;
3758
3759 case 0x10: /* Connection Accept Timeout */
3760 case 0x0d: /* Connection Rejected due to Limited Resources */
3761 case 0x11: /* Unsupported Feature or Parameter Value */
3762 case 0x1c: /* SCO interval rejected */
3763 case 0x1a: /* Unsupported Remote Feature */
3764 case 0x1f: /* Unspecified error */
3765 case 0x20: /* Unsupported LMP Parameter value */
3766 if (conn->out) {
3767 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
3768 (hdev->esco_type & EDR_ESCO_MASK);
3769 if (hci_setup_sync(conn, conn->link->handle))
3770 goto unlock;
3771 }
3772 /* fall through */
3773
3774 default:
3775 conn->state = BT_CLOSED;
3776 break;
3777 }
3778
3779 hci_connect_cfm(conn, ev->status);
3780 if (ev->status)
3781 hci_conn_del(conn);
3782
3783unlock:
3784 hci_dev_unlock(hdev);
3785}
3786
3787static inline size_t eir_get_length(u8 *eir, size_t eir_len)
3788{
3789 size_t parsed = 0;
3790
3791 while (parsed < eir_len) {
3792 u8 field_len = eir[0];
3793
3794 if (field_len == 0)
3795 return parsed;
3796
3797 parsed += field_len + 1;
3798 eir += field_len + 1;
3799 }
3800
3801 return eir_len;
3802}
3803
3804static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
3805 struct sk_buff *skb)
3806{
3807 struct inquiry_data data;
3808 struct extended_inquiry_info *info = (void *) (skb->data + 1);
3809 int num_rsp = *((__u8 *) skb->data);
3810 size_t eir_len;
3811
3812 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3813
3814 if (!num_rsp)
3815 return;
3816
3817 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3818 return;
3819
3820 hci_dev_lock(hdev);
3821
3822 for (; num_rsp; num_rsp--, info++) {
3823 u32 flags;
3824 bool name_known;
3825
3826 bacpy(&data.bdaddr, &info->bdaddr);
3827 data.pscan_rep_mode = info->pscan_rep_mode;
3828 data.pscan_period_mode = info->pscan_period_mode;
3829 data.pscan_mode = 0x00;
3830 memcpy(data.dev_class, info->dev_class, 3);
3831 data.clock_offset = info->clock_offset;
3832 data.rssi = info->rssi;
3833 data.ssp_mode = 0x01;
3834
3835 if (hci_dev_test_flag(hdev, HCI_MGMT))
3836 name_known = eir_get_data(info->data,
3837 sizeof(info->data),
3838 EIR_NAME_COMPLETE, NULL);
3839 else
3840 name_known = true;
3841
3842 flags = hci_inquiry_cache_update(hdev, &data, name_known);
3843
3844 eir_len = eir_get_length(info->data, sizeof(info->data));
3845
3846 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3847 info->dev_class, info->rssi,
3848 flags, info->data, eir_len, NULL, 0);
3849 }
3850
3851 hci_dev_unlock(hdev);
3852}
3853
3854static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
3855 struct sk_buff *skb)
3856{
3857 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
3858 struct hci_conn *conn;
3859
3860 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3861 __le16_to_cpu(ev->handle));
3862
3863 hci_dev_lock(hdev);
3864
3865 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3866 if (!conn)
3867 goto unlock;
3868
3869 /* For BR/EDR the necessary steps are taken through the
3870 * auth_complete event.
3871 */
3872 if (conn->type != LE_LINK)
3873 goto unlock;
3874
3875 if (!ev->status)
3876 conn->sec_level = conn->pending_sec_level;
3877
3878 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3879
3880 if (ev->status && conn->state == BT_CONNECTED) {
3881 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3882 hci_conn_drop(conn);
3883 goto unlock;
3884 }
3885
3886 if (conn->state == BT_CONFIG) {
3887 if (!ev->status)
3888 conn->state = BT_CONNECTED;
3889
3890 hci_connect_cfm(conn, ev->status);
3891 hci_conn_drop(conn);
3892 } else {
3893 hci_auth_cfm(conn, ev->status);
3894
3895 hci_conn_hold(conn);
3896 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3897 hci_conn_drop(conn);
3898 }
3899
3900unlock:
3901 hci_dev_unlock(hdev);
3902}
3903
3904static u8 hci_get_auth_req(struct hci_conn *conn)
3905{
3906 /* If remote requests no-bonding follow that lead */
3907 if (conn->remote_auth == HCI_AT_NO_BONDING ||
3908 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
3909 return conn->remote_auth | (conn->auth_type & 0x01);
3910
3911 /* If both remote and local have enough IO capabilities, require
3912 * MITM protection
3913 */
3914 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
3915 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
3916 return conn->remote_auth | 0x01;
3917
3918 /* No MITM protection possible so ignore remote requirement */
3919 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
3920}
3921
3922static u8 bredr_oob_data_present(struct hci_conn *conn)
3923{
3924 struct hci_dev *hdev = conn->hdev;
3925 struct oob_data *data;
3926
3927 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
3928 if (!data)
3929 return 0x00;
3930
3931 if (bredr_sc_enabled(hdev)) {
3932 /* When Secure Connections is enabled, then just
3933 * return the present value stored with the OOB
3934 * data. The stored value contains the right present
3935 * information. However it can only be trusted when
3936 * not in Secure Connection Only mode.
3937 */
3938 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
3939 return data->present;
3940
3941 /* When Secure Connections Only mode is enabled, then
3942 * the P-256 values are required. If they are not
3943 * available, then do not declare that OOB data is
3944 * present.
3945 */
3946 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
3947 !memcmp(data->hash256, ZERO_KEY, 16))
3948 return 0x00;
3949
3950 return 0x02;
3951 }
3952
3953 /* When Secure Connections is not enabled or actually
3954 * not supported by the hardware, then check that if
3955 * P-192 data values are present.
3956 */
3957 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
3958 !memcmp(data->hash192, ZERO_KEY, 16))
3959 return 0x00;
3960
3961 return 0x01;
3962}
3963
3964static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3965{
3966 struct hci_ev_io_capa_request *ev = (void *) skb->data;
3967 struct hci_conn *conn;
3968
3969 BT_DBG("%s", hdev->name);
3970
3971 hci_dev_lock(hdev);
3972
3973 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3974 if (!conn)
3975 goto unlock;
3976
3977 hci_conn_hold(conn);
3978
3979 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3980 goto unlock;
3981
3982 /* Allow pairing if we're pairable, the initiators of the
3983 * pairing or if the remote is not requesting bonding.
3984 */
3985 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
3986 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
3987 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
3988 struct hci_cp_io_capability_reply cp;
3989
3990 bacpy(&cp.bdaddr, &ev->bdaddr);
3991 /* Change the IO capability from KeyboardDisplay
3992 * to DisplayYesNo as it is not supported by BT spec. */
3993 cp.capability = (conn->io_capability == 0x04) ?
3994 HCI_IO_DISPLAY_YESNO : conn->io_capability;
3995
3996 /* If we are initiators, there is no remote information yet */
3997 if (conn->remote_auth == 0xff) {
3998 /* Request MITM protection if our IO caps allow it
3999 * except for the no-bonding case.
4000 */
4001 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4002 conn->auth_type != HCI_AT_NO_BONDING)
4003 conn->auth_type |= 0x01;
4004 } else {
4005 conn->auth_type = hci_get_auth_req(conn);
4006 }
4007
4008 /* If we're not bondable, force one of the non-bondable
4009 * authentication requirement values.
4010 */
4011 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4012 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
4013
4014 cp.authentication = conn->auth_type;
4015 cp.oob_data = bredr_oob_data_present(conn);
4016
4017 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4018 sizeof(cp), &cp);
4019 } else {
4020 struct hci_cp_io_capability_neg_reply cp;
4021
4022 bacpy(&cp.bdaddr, &ev->bdaddr);
4023 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4024
4025 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4026 sizeof(cp), &cp);
4027 }
4028
4029unlock:
4030 hci_dev_unlock(hdev);
4031}
4032
4033static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4034{
4035 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
4036 struct hci_conn *conn;
4037
4038 BT_DBG("%s", hdev->name);
4039
4040 hci_dev_lock(hdev);
4041
4042 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4043 if (!conn)
4044 goto unlock;
4045
4046 conn->remote_cap = ev->capability;
4047 conn->remote_auth = ev->authentication;
4048
4049unlock:
4050 hci_dev_unlock(hdev);
4051}
4052
4053static void hci_user_confirm_request_evt(struct hci_dev *hdev,
4054 struct sk_buff *skb)
4055{
4056 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4057 int loc_mitm, rem_mitm, confirm_hint = 0;
4058 struct hci_conn *conn;
4059
4060 BT_DBG("%s", hdev->name);
4061
4062 hci_dev_lock(hdev);
4063
4064 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4065 goto unlock;
4066
4067 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4068 if (!conn)
4069 goto unlock;
4070
4071 loc_mitm = (conn->auth_type & 0x01);
4072 rem_mitm = (conn->remote_auth & 0x01);
4073
4074 /* If we require MITM but the remote device can't provide that
4075 * (it has NoInputNoOutput) then reject the confirmation
4076 * request. We check the security level here since it doesn't
4077 * necessarily match conn->auth_type.
4078 */
4079 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
4080 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4081 BT_DBG("Rejecting request: remote device can't provide MITM");
4082 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4083 sizeof(ev->bdaddr), &ev->bdaddr);
4084 goto unlock;
4085 }
4086
4087 /* If no side requires MITM protection; auto-accept */
4088 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
4089 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4090
4091 /* If we're not the initiators request authorization to
4092 * proceed from user space (mgmt_user_confirm with
4093 * confirm_hint set to 1). The exception is if neither
4094 * side had MITM or if the local IO capability is
4095 * NoInputNoOutput, in which case we do auto-accept
4096 */
4097 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4098 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4099 (loc_mitm || rem_mitm)) {
4100 BT_DBG("Confirming auto-accept as acceptor");
4101 confirm_hint = 1;
4102 goto confirm;
4103 }
4104
4105 BT_DBG("Auto-accept of user confirmation with %ums delay",
4106 hdev->auto_accept_delay);
4107
4108 if (hdev->auto_accept_delay > 0) {
4109 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4110 queue_delayed_work(conn->hdev->workqueue,
4111 &conn->auto_accept_work, delay);
4112 goto unlock;
4113 }
4114
4115 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4116 sizeof(ev->bdaddr), &ev->bdaddr);
4117 goto unlock;
4118 }
4119
4120confirm:
4121 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4122 le32_to_cpu(ev->passkey), confirm_hint);
4123
4124unlock:
4125 hci_dev_unlock(hdev);
4126}
4127
4128static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4129 struct sk_buff *skb)
4130{
4131 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4132
4133 BT_DBG("%s", hdev->name);
4134
4135 if (hci_dev_test_flag(hdev, HCI_MGMT))
4136 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4137}
4138
4139static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4140 struct sk_buff *skb)
4141{
4142 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4143 struct hci_conn *conn;
4144
4145 BT_DBG("%s", hdev->name);
4146
4147 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4148 if (!conn)
4149 return;
4150
4151 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4152 conn->passkey_entered = 0;
4153
4154 if (hci_dev_test_flag(hdev, HCI_MGMT))
4155 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4156 conn->dst_type, conn->passkey_notify,
4157 conn->passkey_entered);
4158}
4159
4160static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4161{
4162 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4163 struct hci_conn *conn;
4164
4165 BT_DBG("%s", hdev->name);
4166
4167 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4168 if (!conn)
4169 return;
4170
4171 switch (ev->type) {
4172 case HCI_KEYPRESS_STARTED:
4173 conn->passkey_entered = 0;
4174 return;
4175
4176 case HCI_KEYPRESS_ENTERED:
4177 conn->passkey_entered++;
4178 break;
4179
4180 case HCI_KEYPRESS_ERASED:
4181 conn->passkey_entered--;
4182 break;
4183
4184 case HCI_KEYPRESS_CLEARED:
4185 conn->passkey_entered = 0;
4186 break;
4187
4188 case HCI_KEYPRESS_COMPLETED:
4189 return;
4190 }
4191
4192 if (hci_dev_test_flag(hdev, HCI_MGMT))
4193 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4194 conn->dst_type, conn->passkey_notify,
4195 conn->passkey_entered);
4196}
4197
4198static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4199 struct sk_buff *skb)
4200{
4201 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4202 struct hci_conn *conn;
4203
4204 BT_DBG("%s", hdev->name);
4205
4206 hci_dev_lock(hdev);
4207
4208 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4209 if (!conn)
4210 goto unlock;
4211
4212 /* Reset the authentication requirement to unknown */
4213 conn->remote_auth = 0xff;
4214
4215 /* To avoid duplicate auth_failed events to user space we check
4216 * the HCI_CONN_AUTH_PEND flag which will be set if we
4217 * initiated the authentication. A traditional auth_complete
4218 * event gets always produced as initiator and is also mapped to
4219 * the mgmt_auth_failed event */
4220 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4221 mgmt_auth_failed(conn, ev->status);
4222
4223 hci_conn_drop(conn);
4224
4225unlock:
4226 hci_dev_unlock(hdev);
4227}
4228
4229static void hci_remote_host_features_evt(struct hci_dev *hdev,
4230 struct sk_buff *skb)
4231{
4232 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4233 struct inquiry_entry *ie;
4234 struct hci_conn *conn;
4235
4236 BT_DBG("%s", hdev->name);
4237
4238 hci_dev_lock(hdev);
4239
4240 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4241 if (conn)
4242 memcpy(conn->features[1], ev->features, 8);
4243
4244 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4245 if (ie)
4246 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4247
4248 hci_dev_unlock(hdev);
4249}
4250
4251static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4252 struct sk_buff *skb)
4253{
4254 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4255 struct oob_data *data;
4256
4257 BT_DBG("%s", hdev->name);
4258
4259 hci_dev_lock(hdev);
4260
4261 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4262 goto unlock;
4263
4264 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4265 if (!data) {
4266 struct hci_cp_remote_oob_data_neg_reply cp;
4267
4268 bacpy(&cp.bdaddr, &ev->bdaddr);
4269 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4270 sizeof(cp), &cp);
4271 goto unlock;
4272 }
4273
4274 if (bredr_sc_enabled(hdev)) {
4275 struct hci_cp_remote_oob_ext_data_reply cp;
4276
4277 bacpy(&cp.bdaddr, &ev->bdaddr);
4278 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4279 memset(cp.hash192, 0, sizeof(cp.hash192));
4280 memset(cp.rand192, 0, sizeof(cp.rand192));
4281 } else {
4282 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4283 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4284 }
4285 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4286 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4287
4288 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4289 sizeof(cp), &cp);
4290 } else {
4291 struct hci_cp_remote_oob_data_reply cp;
4292
4293 bacpy(&cp.bdaddr, &ev->bdaddr);
4294 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4295 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4296
4297 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4298 sizeof(cp), &cp);
4299 }
4300
4301unlock:
4302 hci_dev_unlock(hdev);
4303}
4304
4305#if IS_ENABLED(CONFIG_BT_HS)
4306static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4307{
4308 struct hci_ev_channel_selected *ev = (void *)skb->data;
4309 struct hci_conn *hcon;
4310
4311 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4312
4313 skb_pull(skb, sizeof(*ev));
4314
4315 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4316 if (!hcon)
4317 return;
4318
4319 amp_read_loc_assoc_final_data(hdev, hcon);
4320}
4321
4322static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4323 struct sk_buff *skb)
4324{
4325 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4326 struct hci_conn *hcon, *bredr_hcon;
4327
4328 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4329 ev->status);
4330
4331 hci_dev_lock(hdev);
4332
4333 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4334 if (!hcon) {
4335 hci_dev_unlock(hdev);
4336 return;
4337 }
4338
4339 if (ev->status) {
4340 hci_conn_del(hcon);
4341 hci_dev_unlock(hdev);
4342 return;
4343 }
4344
4345 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4346
4347 hcon->state = BT_CONNECTED;
4348 bacpy(&hcon->dst, &bredr_hcon->dst);
4349
4350 hci_conn_hold(hcon);
4351 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4352 hci_conn_drop(hcon);
4353
4354 hci_debugfs_create_conn(hcon);
4355 hci_conn_add_sysfs(hcon);
4356
4357 amp_physical_cfm(bredr_hcon, hcon);
4358
4359 hci_dev_unlock(hdev);
4360}
4361
4362static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4363{
4364 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4365 struct hci_conn *hcon;
4366 struct hci_chan *hchan;
4367 struct amp_mgr *mgr;
4368
4369 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4370 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4371 ev->status);
4372
4373 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4374 if (!hcon)
4375 return;
4376
4377 /* Create AMP hchan */
4378 hchan = hci_chan_create(hcon);
4379 if (!hchan)
4380 return;
4381
4382 hchan->handle = le16_to_cpu(ev->handle);
4383
4384 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4385
4386 mgr = hcon->amp_mgr;
4387 if (mgr && mgr->bredr_chan) {
4388 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4389
4390 l2cap_chan_lock(bredr_chan);
4391
4392 bredr_chan->conn->mtu = hdev->block_mtu;
4393 l2cap_logical_cfm(bredr_chan, hchan, 0);
4394 hci_conn_hold(hcon);
4395
4396 l2cap_chan_unlock(bredr_chan);
4397 }
4398}
4399
4400static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4401 struct sk_buff *skb)
4402{
4403 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4404 struct hci_chan *hchan;
4405
4406 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4407 le16_to_cpu(ev->handle), ev->status);
4408
4409 if (ev->status)
4410 return;
4411
4412 hci_dev_lock(hdev);
4413
4414 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4415 if (!hchan)
4416 goto unlock;
4417
4418 amp_destroy_logical_link(hchan, ev->reason);
4419
4420unlock:
4421 hci_dev_unlock(hdev);
4422}
4423
4424static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4425 struct sk_buff *skb)
4426{
4427 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4428 struct hci_conn *hcon;
4429
4430 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4431
4432 if (ev->status)
4433 return;
4434
4435 hci_dev_lock(hdev);
4436
4437 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4438 if (hcon) {
4439 hcon->state = BT_CLOSED;
4440 hci_conn_del(hcon);
4441 }
4442
4443 hci_dev_unlock(hdev);
4444}
4445#endif
4446
4447static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4448{
4449 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4450 struct hci_conn_params *params;
4451 struct hci_conn *conn;
4452 struct smp_irk *irk;
4453 u8 addr_type;
4454
4455 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4456
4457 hci_dev_lock(hdev);
4458
4459 /* All controllers implicitly stop advertising in the event of a
4460 * connection, so ensure that the state bit is cleared.
4461 */
4462 hci_dev_clear_flag(hdev, HCI_LE_ADV);
4463
4464 conn = hci_lookup_le_connect(hdev);
4465 if (!conn) {
4466 conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4467 if (!conn) {
4468 BT_ERR("No memory for new connection");
4469 goto unlock;
4470 }
4471
4472 conn->dst_type = ev->bdaddr_type;
4473
4474 /* If we didn't have a hci_conn object previously
4475 * but we're in master role this must be something
4476 * initiated using a white list. Since white list based
4477 * connections are not "first class citizens" we don't
4478 * have full tracking of them. Therefore, we go ahead
4479 * with a "best effort" approach of determining the
4480 * initiator address based on the HCI_PRIVACY flag.
4481 */
4482 if (conn->out) {
4483 conn->resp_addr_type = ev->bdaddr_type;
4484 bacpy(&conn->resp_addr, &ev->bdaddr);
4485 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
4486 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4487 bacpy(&conn->init_addr, &hdev->rpa);
4488 } else {
4489 hci_copy_identity_address(hdev,
4490 &conn->init_addr,
4491 &conn->init_addr_type);
4492 }
4493 }
4494 } else {
4495 cancel_delayed_work(&conn->le_conn_timeout);
4496 }
4497
4498 if (!conn->out) {
4499 /* Set the responder (our side) address type based on
4500 * the advertising address type.
4501 */
4502 conn->resp_addr_type = hdev->adv_addr_type;
4503 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
4504 bacpy(&conn->resp_addr, &hdev->random_addr);
4505 else
4506 bacpy(&conn->resp_addr, &hdev->bdaddr);
4507
4508 conn->init_addr_type = ev->bdaddr_type;
4509 bacpy(&conn->init_addr, &ev->bdaddr);
4510
4511 /* For incoming connections, set the default minimum
4512 * and maximum connection interval. They will be used
4513 * to check if the parameters are in range and if not
4514 * trigger the connection update procedure.
4515 */
4516 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4517 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4518 }
4519
4520 /* Lookup the identity address from the stored connection
4521 * address and address type.
4522 *
4523 * When establishing connections to an identity address, the
4524 * connection procedure will store the resolvable random
4525 * address first. Now if it can be converted back into the
4526 * identity address, start using the identity address from
4527 * now on.
4528 */
4529 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4530 if (irk) {
4531 bacpy(&conn->dst, &irk->bdaddr);
4532 conn->dst_type = irk->addr_type;
4533 }
4534
4535 if (ev->status) {
4536 hci_le_conn_failed(conn, ev->status);
4537 goto unlock;
4538 }
4539
4540 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
4541 addr_type = BDADDR_LE_PUBLIC;
4542 else
4543 addr_type = BDADDR_LE_RANDOM;
4544
4545 /* Drop the connection if the device is blocked */
4546 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
4547 hci_conn_drop(conn);
4548 goto unlock;
4549 }
4550
4551 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4552 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4553
4554 conn->sec_level = BT_SECURITY_LOW;
4555 conn->handle = __le16_to_cpu(ev->handle);
4556 conn->state = BT_CONFIG;
4557
4558 conn->le_conn_interval = le16_to_cpu(ev->interval);
4559 conn->le_conn_latency = le16_to_cpu(ev->latency);
4560 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4561
4562 hci_debugfs_create_conn(conn);
4563 hci_conn_add_sysfs(conn);
4564
4565 if (!ev->status) {
4566 /* The remote features procedure is defined for master
4567 * role only. So only in case of an initiated connection
4568 * request the remote features.
4569 *
4570 * If the local controller supports slave-initiated features
4571 * exchange, then requesting the remote features in slave
4572 * role is possible. Otherwise just transition into the
4573 * connected state without requesting the remote features.
4574 */
4575 if (conn->out ||
4576 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
4577 struct hci_cp_le_read_remote_features cp;
4578
4579 cp.handle = __cpu_to_le16(conn->handle);
4580
4581 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
4582 sizeof(cp), &cp);
4583
4584 hci_conn_hold(conn);
4585 } else {
4586 conn->state = BT_CONNECTED;
4587 hci_connect_cfm(conn, ev->status);
4588 }
4589 } else {
4590 hci_connect_cfm(conn, ev->status);
4591 }
4592
4593 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
4594 conn->dst_type);
4595 if (params) {
4596 list_del_init(¶ms->action);
4597 if (params->conn) {
4598 hci_conn_drop(params->conn);
4599 hci_conn_put(params->conn);
4600 params->conn = NULL;
4601 }
4602 }
4603
4604unlock:
4605 hci_update_background_scan(hdev);
4606 hci_dev_unlock(hdev);
4607}
4608
4609static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
4610 struct sk_buff *skb)
4611{
4612 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
4613 struct hci_conn *conn;
4614
4615 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4616
4617 if (ev->status)
4618 return;
4619
4620 hci_dev_lock(hdev);
4621
4622 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4623 if (conn) {
4624 conn->le_conn_interval = le16_to_cpu(ev->interval);
4625 conn->le_conn_latency = le16_to_cpu(ev->latency);
4626 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4627 }
4628
4629 hci_dev_unlock(hdev);
4630}
4631
4632/* This function requires the caller holds hdev->lock */
4633static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
4634 bdaddr_t *addr,
4635 u8 addr_type, u8 adv_type)
4636{
4637 struct hci_conn *conn;
4638 struct hci_conn_params *params;
4639
4640 /* If the event is not connectable don't proceed further */
4641 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4642 return NULL;
4643
4644 /* Ignore if the device is blocked */
4645 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4646 return NULL;
4647
4648 /* Most controller will fail if we try to create new connections
4649 * while we have an existing one in slave role.
4650 */
4651 if (hdev->conn_hash.le_num_slave > 0)
4652 return NULL;
4653
4654 /* If we're not connectable only connect devices that we have in
4655 * our pend_le_conns list.
4656 */
4657 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
4658 addr_type);
4659 if (!params)
4660 return NULL;
4661
4662 if (!params->explicit_connect) {
4663 switch (params->auto_connect) {
4664 case HCI_AUTO_CONN_DIRECT:
4665 /* Only devices advertising with ADV_DIRECT_IND are
4666 * triggering a connection attempt. This is allowing
4667 * incoming connections from slave devices.
4668 */
4669 if (adv_type != LE_ADV_DIRECT_IND)
4670 return NULL;
4671 break;
4672 case HCI_AUTO_CONN_ALWAYS:
4673 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
4674 * are triggering a connection attempt. This means
4675 * that incoming connectioms from slave device are
4676 * accepted and also outgoing connections to slave
4677 * devices are established when found.
4678 */
4679 break;
4680 default:
4681 return NULL;
4682 }
4683 }
4684
4685 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4686 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER);
4687 if (!IS_ERR(conn)) {
4688 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
4689 * by higher layer that tried to connect, if no then
4690 * store the pointer since we don't really have any
4691 * other owner of the object besides the params that
4692 * triggered it. This way we can abort the connection if
4693 * the parameters get removed and keep the reference
4694 * count consistent once the connection is established.
4695 */
4696
4697 if (!params->explicit_connect)
4698 params->conn = hci_conn_get(conn);
4699
4700 return conn;
4701 }
4702
4703 switch (PTR_ERR(conn)) {
4704 case -EBUSY:
4705 /* If hci_connect() returns -EBUSY it means there is already
4706 * an LE connection attempt going on. Since controllers don't
4707 * support more than one connection attempt at the time, we
4708 * don't consider this an error case.
4709 */
4710 break;
4711 default:
4712 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4713 return NULL;
4714 }
4715
4716 return NULL;
4717}
4718
4719static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4720 u8 bdaddr_type, bdaddr_t *direct_addr,
4721 u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
4722{
4723 struct discovery_state *d = &hdev->discovery;
4724 struct smp_irk *irk;
4725 struct hci_conn *conn;
4726 bool match;
4727 u32 flags;
4728 u8 *ptr, real_len;
4729
4730 /* Find the end of the data in case the report contains padded zero
4731 * bytes at the end causing an invalid length value.
4732 *
4733 * When data is NULL, len is 0 so there is no need for extra ptr
4734 * check as 'ptr < data + 0' is already false in such case.
4735 */
4736 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
4737 if (ptr + 1 + *ptr > data + len)
4738 break;
4739 }
4740
4741 real_len = ptr - data;
4742
4743 /* Adjust for actual length */
4744 if (len != real_len) {
4745 BT_ERR_RATELIMITED("%s advertising data length corrected",
4746 hdev->name);
4747 len = real_len;
4748 }
4749
4750 /* If the direct address is present, then this report is from
4751 * a LE Direct Advertising Report event. In that case it is
4752 * important to see if the address is matching the local
4753 * controller address.
4754 */
4755 if (direct_addr) {
4756 /* Only resolvable random addresses are valid for these
4757 * kind of reports and others can be ignored.
4758 */
4759 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
4760 return;
4761
4762 /* If the controller is not using resolvable random
4763 * addresses, then this report can be ignored.
4764 */
4765 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
4766 return;
4767
4768 /* If the local IRK of the controller does not match
4769 * with the resolvable random address provided, then
4770 * this report can be ignored.
4771 */
4772 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
4773 return;
4774 }
4775
4776 /* Check if we need to convert to identity address */
4777 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
4778 if (irk) {
4779 bdaddr = &irk->bdaddr;
4780 bdaddr_type = irk->addr_type;
4781 }
4782
4783 /* Check if we have been requested to connect to this device */
4784 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type);
4785 if (conn && type == LE_ADV_IND) {
4786 /* Store report for later inclusion by
4787 * mgmt_device_connected
4788 */
4789 memcpy(conn->le_adv_data, data, len);
4790 conn->le_adv_data_len = len;
4791 }
4792
4793 /* Passive scanning shouldn't trigger any device found events,
4794 * except for devices marked as CONN_REPORT for which we do send
4795 * device found events.
4796 */
4797 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4798 if (type == LE_ADV_DIRECT_IND)
4799 return;
4800
4801 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
4802 bdaddr, bdaddr_type))
4803 return;
4804
4805 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
4806 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4807 else
4808 flags = 0;
4809 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4810 rssi, flags, data, len, NULL, 0);
4811 return;
4812 }
4813
4814 /* When receiving non-connectable or scannable undirected
4815 * advertising reports, this means that the remote device is
4816 * not connectable and then clearly indicate this in the
4817 * device found event.
4818 *
4819 * When receiving a scan response, then there is no way to
4820 * know if the remote device is connectable or not. However
4821 * since scan responses are merged with a previously seen
4822 * advertising report, the flags field from that report
4823 * will be used.
4824 *
4825 * In the really unlikely case that a controller get confused
4826 * and just sends a scan response event, then it is marked as
4827 * not connectable as well.
4828 */
4829 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
4830 type == LE_ADV_SCAN_RSP)
4831 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4832 else
4833 flags = 0;
4834
4835 /* If there's nothing pending either store the data from this
4836 * event or send an immediate device found event if the data
4837 * should not be stored for later.
4838 */
4839 if (!has_pending_adv_report(hdev)) {
4840 /* If the report will trigger a SCAN_REQ store it for
4841 * later merging.
4842 */
4843 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4844 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4845 rssi, flags, data, len);
4846 return;
4847 }
4848
4849 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4850 rssi, flags, data, len, NULL, 0);
4851 return;
4852 }
4853
4854 /* Check if the pending report is for the same device as the new one */
4855 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
4856 bdaddr_type == d->last_adv_addr_type);
4857
4858 /* If the pending data doesn't match this report or this isn't a
4859 * scan response (e.g. we got a duplicate ADV_IND) then force
4860 * sending of the pending data.
4861 */
4862 if (type != LE_ADV_SCAN_RSP || !match) {
4863 /* Send out whatever is in the cache, but skip duplicates */
4864 if (!match)
4865 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4866 d->last_adv_addr_type, NULL,
4867 d->last_adv_rssi, d->last_adv_flags,
4868 d->last_adv_data,
4869 d->last_adv_data_len, NULL, 0);
4870
4871 /* If the new report will trigger a SCAN_REQ store it for
4872 * later merging.
4873 */
4874 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4875 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4876 rssi, flags, data, len);
4877 return;
4878 }
4879
4880 /* The advertising reports cannot be merged, so clear
4881 * the pending report and send out a device found event.
4882 */
4883 clear_pending_adv_report(hdev);
4884 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4885 rssi, flags, data, len, NULL, 0);
4886 return;
4887 }
4888
4889 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
4890 * the new event is a SCAN_RSP. We can therefore proceed with
4891 * sending a merged device found event.
4892 */
4893 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4894 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4895 d->last_adv_data, d->last_adv_data_len, data, len);
4896 clear_pending_adv_report(hdev);
4897}
4898
4899static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4900{
4901 u8 num_reports = skb->data[0];
4902 void *ptr = &skb->data[1];
4903
4904 hci_dev_lock(hdev);
4905
4906 while (num_reports--) {
4907 struct hci_ev_le_advertising_info *ev = ptr;
4908 s8 rssi;
4909
4910 rssi = ev->data[ev->length];
4911 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4912 ev->bdaddr_type, NULL, 0, rssi,
4913 ev->data, ev->length);
4914
4915 ptr += sizeof(*ev) + ev->length + 1;
4916 }
4917
4918 hci_dev_unlock(hdev);
4919}
4920
4921static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
4922 struct sk_buff *skb)
4923{
4924 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
4925 struct hci_conn *conn;
4926
4927 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4928
4929 hci_dev_lock(hdev);
4930
4931 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4932 if (conn) {
4933 if (!ev->status)
4934 memcpy(conn->features[0], ev->features, 8);
4935
4936 if (conn->state == BT_CONFIG) {
4937 __u8 status;
4938
4939 /* If the local controller supports slave-initiated
4940 * features exchange, but the remote controller does
4941 * not, then it is possible that the error code 0x1a
4942 * for unsupported remote feature gets returned.
4943 *
4944 * In this specific case, allow the connection to
4945 * transition into connected state and mark it as
4946 * successful.
4947 */
4948 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
4949 !conn->out && ev->status == 0x1a)
4950 status = 0x00;
4951 else
4952 status = ev->status;
4953
4954 conn->state = BT_CONNECTED;
4955 hci_connect_cfm(conn, status);
4956 hci_conn_drop(conn);
4957 }
4958 }
4959
4960 hci_dev_unlock(hdev);
4961}
4962
4963static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4964{
4965 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
4966 struct hci_cp_le_ltk_reply cp;
4967 struct hci_cp_le_ltk_neg_reply neg;
4968 struct hci_conn *conn;
4969 struct smp_ltk *ltk;
4970
4971 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
4972
4973 hci_dev_lock(hdev);
4974
4975 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4976 if (conn == NULL)
4977 goto not_found;
4978
4979 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
4980 if (!ltk)
4981 goto not_found;
4982
4983 if (smp_ltk_is_sc(ltk)) {
4984 /* With SC both EDiv and Rand are set to zero */
4985 if (ev->ediv || ev->rand)
4986 goto not_found;
4987 } else {
4988 /* For non-SC keys check that EDiv and Rand match */
4989 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
4990 goto not_found;
4991 }
4992
4993 memcpy(cp.ltk, ltk->val, ltk->enc_size);
4994 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
4995 cp.handle = cpu_to_le16(conn->handle);
4996
4997 conn->pending_sec_level = smp_ltk_sec_level(ltk);
4998
4999 conn->enc_key_size = ltk->enc_size;
5000
5001 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
5002
5003 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
5004 * temporary key used to encrypt a connection following
5005 * pairing. It is used during the Encrypted Session Setup to
5006 * distribute the keys. Later, security can be re-established
5007 * using a distributed LTK.
5008 */
5009 if (ltk->type == SMP_STK) {
5010 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5011 list_del_rcu(<k->list);
5012 kfree_rcu(ltk, rcu);
5013 } else {
5014 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5015 }
5016
5017 hci_dev_unlock(hdev);
5018
5019 return;
5020
5021not_found:
5022 neg.handle = ev->handle;
5023 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
5024 hci_dev_unlock(hdev);
5025}
5026
5027static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
5028 u8 reason)
5029{
5030 struct hci_cp_le_conn_param_req_neg_reply cp;
5031
5032 cp.handle = cpu_to_le16(handle);
5033 cp.reason = reason;
5034
5035 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
5036 &cp);
5037}
5038
5039static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
5040 struct sk_buff *skb)
5041{
5042 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
5043 struct hci_cp_le_conn_param_req_reply cp;
5044 struct hci_conn *hcon;
5045 u16 handle, min, max, latency, timeout;
5046
5047 handle = le16_to_cpu(ev->handle);
5048 min = le16_to_cpu(ev->interval_min);
5049 max = le16_to_cpu(ev->interval_max);
5050 latency = le16_to_cpu(ev->latency);
5051 timeout = le16_to_cpu(ev->timeout);
5052
5053 hcon = hci_conn_hash_lookup_handle(hdev, handle);
5054 if (!hcon || hcon->state != BT_CONNECTED)
5055 return send_conn_param_neg_reply(hdev, handle,
5056 HCI_ERROR_UNKNOWN_CONN_ID);
5057
5058 if (hci_check_conn_params(min, max, latency, timeout))
5059 return send_conn_param_neg_reply(hdev, handle,
5060 HCI_ERROR_INVALID_LL_PARAMS);
5061
5062 if (hcon->role == HCI_ROLE_MASTER) {
5063 struct hci_conn_params *params;
5064 u8 store_hint;
5065
5066 hci_dev_lock(hdev);
5067
5068 params = hci_conn_params_lookup(hdev, &hcon->dst,
5069 hcon->dst_type);
5070 if (params) {
5071 params->conn_min_interval = min;
5072 params->conn_max_interval = max;
5073 params->conn_latency = latency;
5074 params->supervision_timeout = timeout;
5075 store_hint = 0x01;
5076 } else{
5077 store_hint = 0x00;
5078 }
5079
5080 hci_dev_unlock(hdev);
5081
5082 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
5083 store_hint, min, max, latency, timeout);
5084 }
5085
5086 cp.handle = ev->handle;
5087 cp.interval_min = ev->interval_min;
5088 cp.interval_max = ev->interval_max;
5089 cp.latency = ev->latency;
5090 cp.timeout = ev->timeout;
5091 cp.min_ce_len = 0;
5092 cp.max_ce_len = 0;
5093
5094 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
5095}
5096
5097static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
5098 struct sk_buff *skb)
5099{
5100 u8 num_reports = skb->data[0];
5101 void *ptr = &skb->data[1];
5102
5103 hci_dev_lock(hdev);
5104
5105 while (num_reports--) {
5106 struct hci_ev_le_direct_adv_info *ev = ptr;
5107
5108 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5109 ev->bdaddr_type, &ev->direct_addr,
5110 ev->direct_addr_type, ev->rssi, NULL, 0);
5111
5112 ptr += sizeof(*ev);
5113 }
5114
5115 hci_dev_unlock(hdev);
5116}
5117
5118static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
5119{
5120 struct hci_ev_le_meta *le_ev = (void *) skb->data;
5121
5122 skb_pull(skb, sizeof(*le_ev));
5123
5124 switch (le_ev->subevent) {
5125 case HCI_EV_LE_CONN_COMPLETE:
5126 hci_le_conn_complete_evt(hdev, skb);
5127 break;
5128
5129 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
5130 hci_le_conn_update_complete_evt(hdev, skb);
5131 break;
5132
5133 case HCI_EV_LE_ADVERTISING_REPORT:
5134 hci_le_adv_report_evt(hdev, skb);
5135 break;
5136
5137 case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
5138 hci_le_remote_feat_complete_evt(hdev, skb);
5139 break;
5140
5141 case HCI_EV_LE_LTK_REQ:
5142 hci_le_ltk_request_evt(hdev, skb);
5143 break;
5144
5145 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
5146 hci_le_remote_conn_param_req_evt(hdev, skb);
5147 break;
5148
5149 case HCI_EV_LE_DIRECT_ADV_REPORT:
5150 hci_le_direct_adv_report_evt(hdev, skb);
5151 break;
5152
5153 default:
5154 break;
5155 }
5156}
5157
5158static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
5159 u8 event, struct sk_buff *skb)
5160{
5161 struct hci_ev_cmd_complete *ev;
5162 struct hci_event_hdr *hdr;
5163
5164 if (!skb)
5165 return false;
5166
5167 if (skb->len < sizeof(*hdr)) {
5168 BT_ERR("Too short HCI event");
5169 return false;
5170 }
5171
5172 hdr = (void *) skb->data;
5173 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5174
5175 if (event) {
5176 if (hdr->evt != event)
5177 return false;
5178 return true;
5179 }
5180
5181 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
5182 BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
5183 return false;
5184 }
5185
5186 if (skb->len < sizeof(*ev)) {
5187 BT_ERR("Too short cmd_complete event");
5188 return false;
5189 }
5190
5191 ev = (void *) skb->data;
5192 skb_pull(skb, sizeof(*ev));
5193
5194 if (opcode != __le16_to_cpu(ev->opcode)) {
5195 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
5196 __le16_to_cpu(ev->opcode));
5197 return false;
5198 }
5199
5200 return true;
5201}
5202
5203void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
5204{
5205 struct hci_event_hdr *hdr = (void *) skb->data;
5206 hci_req_complete_t req_complete = NULL;
5207 hci_req_complete_skb_t req_complete_skb = NULL;
5208 struct sk_buff *orig_skb = NULL;
5209 u8 status = 0, event = hdr->evt, req_evt = 0;
5210 u16 opcode = HCI_OP_NOP;
5211
5212 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) {
5213 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
5214 opcode = __le16_to_cpu(cmd_hdr->opcode);
5215 hci_req_cmd_complete(hdev, opcode, status, &req_complete,
5216 &req_complete_skb);
5217 req_evt = event;
5218 }
5219
5220 /* If it looks like we might end up having to call
5221 * req_complete_skb, store a pristine copy of the skb since the
5222 * various handlers may modify the original one through
5223 * skb_pull() calls, etc.
5224 */
5225 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
5226 event == HCI_EV_CMD_COMPLETE)
5227 orig_skb = skb_clone(skb, GFP_KERNEL);
5228
5229 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5230
5231 switch (event) {
5232 case HCI_EV_INQUIRY_COMPLETE:
5233 hci_inquiry_complete_evt(hdev, skb);
5234 break;
5235
5236 case HCI_EV_INQUIRY_RESULT:
5237 hci_inquiry_result_evt(hdev, skb);
5238 break;
5239
5240 case HCI_EV_CONN_COMPLETE:
5241 hci_conn_complete_evt(hdev, skb);
5242 break;
5243
5244 case HCI_EV_CONN_REQUEST:
5245 hci_conn_request_evt(hdev, skb);
5246 break;
5247
5248 case HCI_EV_DISCONN_COMPLETE:
5249 hci_disconn_complete_evt(hdev, skb);
5250 break;
5251
5252 case HCI_EV_AUTH_COMPLETE:
5253 hci_auth_complete_evt(hdev, skb);
5254 break;
5255
5256 case HCI_EV_REMOTE_NAME:
5257 hci_remote_name_evt(hdev, skb);
5258 break;
5259
5260 case HCI_EV_ENCRYPT_CHANGE:
5261 hci_encrypt_change_evt(hdev, skb);
5262 break;
5263
5264 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
5265 hci_change_link_key_complete_evt(hdev, skb);
5266 break;
5267
5268 case HCI_EV_REMOTE_FEATURES:
5269 hci_remote_features_evt(hdev, skb);
5270 break;
5271
5272 case HCI_EV_CMD_COMPLETE:
5273 hci_cmd_complete_evt(hdev, skb, &opcode, &status,
5274 &req_complete, &req_complete_skb);
5275 break;
5276
5277 case HCI_EV_CMD_STATUS:
5278 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
5279 &req_complete_skb);
5280 break;
5281
5282 case HCI_EV_HARDWARE_ERROR:
5283 hci_hardware_error_evt(hdev, skb);
5284 break;
5285
5286 case HCI_EV_ROLE_CHANGE:
5287 hci_role_change_evt(hdev, skb);
5288 break;
5289
5290 case HCI_EV_NUM_COMP_PKTS:
5291 hci_num_comp_pkts_evt(hdev, skb);
5292 break;
5293
5294 case HCI_EV_MODE_CHANGE:
5295 hci_mode_change_evt(hdev, skb);
5296 break;
5297
5298 case HCI_EV_PIN_CODE_REQ:
5299 hci_pin_code_request_evt(hdev, skb);
5300 break;
5301
5302 case HCI_EV_LINK_KEY_REQ:
5303 hci_link_key_request_evt(hdev, skb);
5304 break;
5305
5306 case HCI_EV_LINK_KEY_NOTIFY:
5307 hci_link_key_notify_evt(hdev, skb);
5308 break;
5309
5310 case HCI_EV_CLOCK_OFFSET:
5311 hci_clock_offset_evt(hdev, skb);
5312 break;
5313
5314 case HCI_EV_PKT_TYPE_CHANGE:
5315 hci_pkt_type_change_evt(hdev, skb);
5316 break;
5317
5318 case HCI_EV_PSCAN_REP_MODE:
5319 hci_pscan_rep_mode_evt(hdev, skb);
5320 break;
5321
5322 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
5323 hci_inquiry_result_with_rssi_evt(hdev, skb);
5324 break;
5325
5326 case HCI_EV_REMOTE_EXT_FEATURES:
5327 hci_remote_ext_features_evt(hdev, skb);
5328 break;
5329
5330 case HCI_EV_SYNC_CONN_COMPLETE:
5331 hci_sync_conn_complete_evt(hdev, skb);
5332 break;
5333
5334 case HCI_EV_EXTENDED_INQUIRY_RESULT:
5335 hci_extended_inquiry_result_evt(hdev, skb);
5336 break;
5337
5338 case HCI_EV_KEY_REFRESH_COMPLETE:
5339 hci_key_refresh_complete_evt(hdev, skb);
5340 break;
5341
5342 case HCI_EV_IO_CAPA_REQUEST:
5343 hci_io_capa_request_evt(hdev, skb);
5344 break;
5345
5346 case HCI_EV_IO_CAPA_REPLY:
5347 hci_io_capa_reply_evt(hdev, skb);
5348 break;
5349
5350 case HCI_EV_USER_CONFIRM_REQUEST:
5351 hci_user_confirm_request_evt(hdev, skb);
5352 break;
5353
5354 case HCI_EV_USER_PASSKEY_REQUEST:
5355 hci_user_passkey_request_evt(hdev, skb);
5356 break;
5357
5358 case HCI_EV_USER_PASSKEY_NOTIFY:
5359 hci_user_passkey_notify_evt(hdev, skb);
5360 break;
5361
5362 case HCI_EV_KEYPRESS_NOTIFY:
5363 hci_keypress_notify_evt(hdev, skb);
5364 break;
5365
5366 case HCI_EV_SIMPLE_PAIR_COMPLETE:
5367 hci_simple_pair_complete_evt(hdev, skb);
5368 break;
5369
5370 case HCI_EV_REMOTE_HOST_FEATURES:
5371 hci_remote_host_features_evt(hdev, skb);
5372 break;
5373
5374 case HCI_EV_LE_META:
5375 hci_le_meta_evt(hdev, skb);
5376 break;
5377
5378 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
5379 hci_remote_oob_data_request_evt(hdev, skb);
5380 break;
5381
5382#if IS_ENABLED(CONFIG_BT_HS)
5383 case HCI_EV_CHANNEL_SELECTED:
5384 hci_chan_selected_evt(hdev, skb);
5385 break;
5386
5387 case HCI_EV_PHY_LINK_COMPLETE:
5388 hci_phy_link_complete_evt(hdev, skb);
5389 break;
5390
5391 case HCI_EV_LOGICAL_LINK_COMPLETE:
5392 hci_loglink_complete_evt(hdev, skb);
5393 break;
5394
5395 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
5396 hci_disconn_loglink_complete_evt(hdev, skb);
5397 break;
5398
5399 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
5400 hci_disconn_phylink_complete_evt(hdev, skb);
5401 break;
5402#endif
5403
5404 case HCI_EV_NUM_COMP_BLOCKS:
5405 hci_num_comp_blocks_evt(hdev, skb);
5406 break;
5407
5408 default:
5409 BT_DBG("%s event 0x%2.2x", hdev->name, event);
5410 break;
5411 }
5412
5413 if (req_complete) {
5414 req_complete(hdev, status, opcode);
5415 } else if (req_complete_skb) {
5416 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
5417 kfree_skb(orig_skb);
5418 orig_skb = NULL;
5419 }
5420 req_complete_skb(hdev, status, opcode, orig_skb);
5421 }
5422
5423 kfree_skb(orig_skb);
5424 kfree_skb(skb);
5425 hdev->stat.evt_rx++;
5426}