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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
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}
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#include "msft.h"
39
40#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
41 "\x00\x00\x00\x00\x00\x00\x00\x00"
42
43/* Handle HCI Event packets */
44
45static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb,
46 u8 *new_status)
47{
48 __u8 status = *((__u8 *) skb->data);
49
50 BT_DBG("%s status 0x%2.2x", hdev->name, status);
51
52 /* It is possible that we receive Inquiry Complete event right
53 * before we receive Inquiry Cancel Command Complete event, in
54 * which case the latter event should have status of Command
55 * Disallowed (0x0c). This should not be treated as error, since
56 * we actually achieve what Inquiry Cancel wants to achieve,
57 * which is to end the last Inquiry session.
58 */
59 if (status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
60 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
61 status = 0x00;
62 }
63
64 *new_status = status;
65
66 if (status)
67 return;
68
69 clear_bit(HCI_INQUIRY, &hdev->flags);
70 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
71 wake_up_bit(&hdev->flags, HCI_INQUIRY);
72
73 hci_dev_lock(hdev);
74 /* Set discovery state to stopped if we're not doing LE active
75 * scanning.
76 */
77 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
78 hdev->le_scan_type != LE_SCAN_ACTIVE)
79 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
80 hci_dev_unlock(hdev);
81
82 hci_conn_check_pending(hdev);
83}
84
85static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
86{
87 __u8 status = *((__u8 *) skb->data);
88
89 BT_DBG("%s status 0x%2.2x", hdev->name, status);
90
91 if (status)
92 return;
93
94 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
95}
96
97static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
98{
99 __u8 status = *((__u8 *) skb->data);
100
101 BT_DBG("%s status 0x%2.2x", hdev->name, status);
102
103 if (status)
104 return;
105
106 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
107
108 hci_conn_check_pending(hdev);
109}
110
111static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
112 struct sk_buff *skb)
113{
114 BT_DBG("%s", hdev->name);
115}
116
117static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
118{
119 struct hci_rp_role_discovery *rp = (void *) skb->data;
120 struct hci_conn *conn;
121
122 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
123
124 if (rp->status)
125 return;
126
127 hci_dev_lock(hdev);
128
129 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
130 if (conn)
131 conn->role = rp->role;
132
133 hci_dev_unlock(hdev);
134}
135
136static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
137{
138 struct hci_rp_read_link_policy *rp = (void *) skb->data;
139 struct hci_conn *conn;
140
141 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
142
143 if (rp->status)
144 return;
145
146 hci_dev_lock(hdev);
147
148 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
149 if (conn)
150 conn->link_policy = __le16_to_cpu(rp->policy);
151
152 hci_dev_unlock(hdev);
153}
154
155static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
156{
157 struct hci_rp_write_link_policy *rp = (void *) skb->data;
158 struct hci_conn *conn;
159 void *sent;
160
161 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
162
163 if (rp->status)
164 return;
165
166 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
167 if (!sent)
168 return;
169
170 hci_dev_lock(hdev);
171
172 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
173 if (conn)
174 conn->link_policy = get_unaligned_le16(sent + 2);
175
176 hci_dev_unlock(hdev);
177}
178
179static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
180 struct sk_buff *skb)
181{
182 struct hci_rp_read_def_link_policy *rp = (void *) skb->data;
183
184 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
185
186 if (rp->status)
187 return;
188
189 hdev->link_policy = __le16_to_cpu(rp->policy);
190}
191
192static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
193 struct sk_buff *skb)
194{
195 __u8 status = *((__u8 *) skb->data);
196 void *sent;
197
198 BT_DBG("%s status 0x%2.2x", hdev->name, status);
199
200 if (status)
201 return;
202
203 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
204 if (!sent)
205 return;
206
207 hdev->link_policy = get_unaligned_le16(sent);
208}
209
210static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
211{
212 __u8 status = *((__u8 *) skb->data);
213
214 BT_DBG("%s status 0x%2.2x", hdev->name, status);
215
216 clear_bit(HCI_RESET, &hdev->flags);
217
218 if (status)
219 return;
220
221 /* Reset all non-persistent flags */
222 hci_dev_clear_volatile_flags(hdev);
223
224 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
225
226 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
227 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
228
229 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
230 hdev->adv_data_len = 0;
231
232 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
233 hdev->scan_rsp_data_len = 0;
234
235 hdev->le_scan_type = LE_SCAN_PASSIVE;
236
237 hdev->ssp_debug_mode = 0;
238
239 hci_bdaddr_list_clear(&hdev->le_white_list);
240 hci_bdaddr_list_clear(&hdev->le_resolv_list);
241}
242
243static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
244 struct sk_buff *skb)
245{
246 struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
247 struct hci_cp_read_stored_link_key *sent;
248
249 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
250
251 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
252 if (!sent)
253 return;
254
255 if (!rp->status && sent->read_all == 0x01) {
256 hdev->stored_max_keys = rp->max_keys;
257 hdev->stored_num_keys = rp->num_keys;
258 }
259}
260
261static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
262 struct sk_buff *skb)
263{
264 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;
265
266 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
267
268 if (rp->status)
269 return;
270
271 if (rp->num_keys <= hdev->stored_num_keys)
272 hdev->stored_num_keys -= rp->num_keys;
273 else
274 hdev->stored_num_keys = 0;
275}
276
277static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
278{
279 __u8 status = *((__u8 *) skb->data);
280 void *sent;
281
282 BT_DBG("%s status 0x%2.2x", hdev->name, status);
283
284 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
285 if (!sent)
286 return;
287
288 hci_dev_lock(hdev);
289
290 if (hci_dev_test_flag(hdev, HCI_MGMT))
291 mgmt_set_local_name_complete(hdev, sent, status);
292 else if (!status)
293 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
294
295 hci_dev_unlock(hdev);
296}
297
298static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
299{
300 struct hci_rp_read_local_name *rp = (void *) skb->data;
301
302 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
303
304 if (rp->status)
305 return;
306
307 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
308 hci_dev_test_flag(hdev, HCI_CONFIG))
309 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
310}
311
312static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
313{
314 __u8 status = *((__u8 *) skb->data);
315 void *sent;
316
317 BT_DBG("%s status 0x%2.2x", hdev->name, status);
318
319 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
320 if (!sent)
321 return;
322
323 hci_dev_lock(hdev);
324
325 if (!status) {
326 __u8 param = *((__u8 *) sent);
327
328 if (param == AUTH_ENABLED)
329 set_bit(HCI_AUTH, &hdev->flags);
330 else
331 clear_bit(HCI_AUTH, &hdev->flags);
332 }
333
334 if (hci_dev_test_flag(hdev, HCI_MGMT))
335 mgmt_auth_enable_complete(hdev, status);
336
337 hci_dev_unlock(hdev);
338}
339
340static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
341{
342 __u8 status = *((__u8 *) skb->data);
343 __u8 param;
344 void *sent;
345
346 BT_DBG("%s status 0x%2.2x", hdev->name, status);
347
348 if (status)
349 return;
350
351 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
352 if (!sent)
353 return;
354
355 param = *((__u8 *) sent);
356
357 if (param)
358 set_bit(HCI_ENCRYPT, &hdev->flags);
359 else
360 clear_bit(HCI_ENCRYPT, &hdev->flags);
361}
362
363static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
364{
365 __u8 status = *((__u8 *) skb->data);
366 __u8 param;
367 void *sent;
368
369 BT_DBG("%s status 0x%2.2x", hdev->name, status);
370
371 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
372 if (!sent)
373 return;
374
375 param = *((__u8 *) sent);
376
377 hci_dev_lock(hdev);
378
379 if (status) {
380 hdev->discov_timeout = 0;
381 goto done;
382 }
383
384 if (param & SCAN_INQUIRY)
385 set_bit(HCI_ISCAN, &hdev->flags);
386 else
387 clear_bit(HCI_ISCAN, &hdev->flags);
388
389 if (param & SCAN_PAGE)
390 set_bit(HCI_PSCAN, &hdev->flags);
391 else
392 clear_bit(HCI_PSCAN, &hdev->flags);
393
394done:
395 hci_dev_unlock(hdev);
396}
397
398static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
399{
400 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
401
402 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
403
404 if (rp->status)
405 return;
406
407 memcpy(hdev->dev_class, rp->dev_class, 3);
408
409 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
410 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
411}
412
413static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
414{
415 __u8 status = *((__u8 *) skb->data);
416 void *sent;
417
418 BT_DBG("%s status 0x%2.2x", hdev->name, status);
419
420 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
421 if (!sent)
422 return;
423
424 hci_dev_lock(hdev);
425
426 if (status == 0)
427 memcpy(hdev->dev_class, sent, 3);
428
429 if (hci_dev_test_flag(hdev, HCI_MGMT))
430 mgmt_set_class_of_dev_complete(hdev, sent, status);
431
432 hci_dev_unlock(hdev);
433}
434
435static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
436{
437 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
438 __u16 setting;
439
440 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
441
442 if (rp->status)
443 return;
444
445 setting = __le16_to_cpu(rp->voice_setting);
446
447 if (hdev->voice_setting == setting)
448 return;
449
450 hdev->voice_setting = setting;
451
452 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
453
454 if (hdev->notify)
455 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
456}
457
458static void hci_cc_write_voice_setting(struct hci_dev *hdev,
459 struct sk_buff *skb)
460{
461 __u8 status = *((__u8 *) skb->data);
462 __u16 setting;
463 void *sent;
464
465 BT_DBG("%s status 0x%2.2x", hdev->name, status);
466
467 if (status)
468 return;
469
470 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
471 if (!sent)
472 return;
473
474 setting = get_unaligned_le16(sent);
475
476 if (hdev->voice_setting == setting)
477 return;
478
479 hdev->voice_setting = setting;
480
481 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
482
483 if (hdev->notify)
484 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
485}
486
487static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
488 struct sk_buff *skb)
489{
490 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
491
492 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
493
494 if (rp->status)
495 return;
496
497 hdev->num_iac = rp->num_iac;
498
499 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
500}
501
502static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
503{
504 __u8 status = *((__u8 *) skb->data);
505 struct hci_cp_write_ssp_mode *sent;
506
507 BT_DBG("%s status 0x%2.2x", hdev->name, status);
508
509 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
510 if (!sent)
511 return;
512
513 hci_dev_lock(hdev);
514
515 if (!status) {
516 if (sent->mode)
517 hdev->features[1][0] |= LMP_HOST_SSP;
518 else
519 hdev->features[1][0] &= ~LMP_HOST_SSP;
520 }
521
522 if (hci_dev_test_flag(hdev, HCI_MGMT))
523 mgmt_ssp_enable_complete(hdev, sent->mode, status);
524 else if (!status) {
525 if (sent->mode)
526 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
527 else
528 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
529 }
530
531 hci_dev_unlock(hdev);
532}
533
534static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
535{
536 u8 status = *((u8 *) skb->data);
537 struct hci_cp_write_sc_support *sent;
538
539 BT_DBG("%s status 0x%2.2x", hdev->name, status);
540
541 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
542 if (!sent)
543 return;
544
545 hci_dev_lock(hdev);
546
547 if (!status) {
548 if (sent->support)
549 hdev->features[1][0] |= LMP_HOST_SC;
550 else
551 hdev->features[1][0] &= ~LMP_HOST_SC;
552 }
553
554 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
555 if (sent->support)
556 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
557 else
558 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
559 }
560
561 hci_dev_unlock(hdev);
562}
563
564static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
565{
566 struct hci_rp_read_local_version *rp = (void *) skb->data;
567
568 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
569
570 if (rp->status)
571 return;
572
573 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
574 hci_dev_test_flag(hdev, HCI_CONFIG)) {
575 hdev->hci_ver = rp->hci_ver;
576 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
577 hdev->lmp_ver = rp->lmp_ver;
578 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
579 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
580 }
581}
582
583static void hci_cc_read_local_commands(struct hci_dev *hdev,
584 struct sk_buff *skb)
585{
586 struct hci_rp_read_local_commands *rp = (void *) skb->data;
587
588 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
589
590 if (rp->status)
591 return;
592
593 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
594 hci_dev_test_flag(hdev, HCI_CONFIG))
595 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
596}
597
598static void hci_cc_read_auth_payload_timeout(struct hci_dev *hdev,
599 struct sk_buff *skb)
600{
601 struct hci_rp_read_auth_payload_to *rp = (void *)skb->data;
602 struct hci_conn *conn;
603
604 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
605
606 if (rp->status)
607 return;
608
609 hci_dev_lock(hdev);
610
611 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
612 if (conn)
613 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
614
615 hci_dev_unlock(hdev);
616}
617
618static void hci_cc_write_auth_payload_timeout(struct hci_dev *hdev,
619 struct sk_buff *skb)
620{
621 struct hci_rp_write_auth_payload_to *rp = (void *)skb->data;
622 struct hci_conn *conn;
623 void *sent;
624
625 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
626
627 if (rp->status)
628 return;
629
630 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
631 if (!sent)
632 return;
633
634 hci_dev_lock(hdev);
635
636 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
637 if (conn)
638 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
639
640 hci_dev_unlock(hdev);
641}
642
643static void hci_cc_read_local_features(struct hci_dev *hdev,
644 struct sk_buff *skb)
645{
646 struct hci_rp_read_local_features *rp = (void *) skb->data;
647
648 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
649
650 if (rp->status)
651 return;
652
653 memcpy(hdev->features, rp->features, 8);
654
655 /* Adjust default settings according to features
656 * supported by device. */
657
658 if (hdev->features[0][0] & LMP_3SLOT)
659 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
660
661 if (hdev->features[0][0] & LMP_5SLOT)
662 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
663
664 if (hdev->features[0][1] & LMP_HV2) {
665 hdev->pkt_type |= (HCI_HV2);
666 hdev->esco_type |= (ESCO_HV2);
667 }
668
669 if (hdev->features[0][1] & LMP_HV3) {
670 hdev->pkt_type |= (HCI_HV3);
671 hdev->esco_type |= (ESCO_HV3);
672 }
673
674 if (lmp_esco_capable(hdev))
675 hdev->esco_type |= (ESCO_EV3);
676
677 if (hdev->features[0][4] & LMP_EV4)
678 hdev->esco_type |= (ESCO_EV4);
679
680 if (hdev->features[0][4] & LMP_EV5)
681 hdev->esco_type |= (ESCO_EV5);
682
683 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
684 hdev->esco_type |= (ESCO_2EV3);
685
686 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
687 hdev->esco_type |= (ESCO_3EV3);
688
689 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
690 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
691}
692
693static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
694 struct sk_buff *skb)
695{
696 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
697
698 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
699
700 if (rp->status)
701 return;
702
703 if (hdev->max_page < rp->max_page)
704 hdev->max_page = rp->max_page;
705
706 if (rp->page < HCI_MAX_PAGES)
707 memcpy(hdev->features[rp->page], rp->features, 8);
708}
709
710static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
711 struct sk_buff *skb)
712{
713 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
714
715 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
716
717 if (rp->status)
718 return;
719
720 hdev->flow_ctl_mode = rp->mode;
721}
722
723static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
724{
725 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
726
727 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
728
729 if (rp->status)
730 return;
731
732 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
733 hdev->sco_mtu = rp->sco_mtu;
734 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
735 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
736
737 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
738 hdev->sco_mtu = 64;
739 hdev->sco_pkts = 8;
740 }
741
742 hdev->acl_cnt = hdev->acl_pkts;
743 hdev->sco_cnt = hdev->sco_pkts;
744
745 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
746 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
747}
748
749static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
750{
751 struct hci_rp_read_bd_addr *rp = (void *) skb->data;
752
753 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
754
755 if (rp->status)
756 return;
757
758 if (test_bit(HCI_INIT, &hdev->flags))
759 bacpy(&hdev->bdaddr, &rp->bdaddr);
760
761 if (hci_dev_test_flag(hdev, HCI_SETUP))
762 bacpy(&hdev->setup_addr, &rp->bdaddr);
763}
764
765static void hci_cc_read_local_pairing_opts(struct hci_dev *hdev,
766 struct sk_buff *skb)
767{
768 struct hci_rp_read_local_pairing_opts *rp = (void *) skb->data;
769
770 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
771
772 if (rp->status)
773 return;
774
775 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
776 hci_dev_test_flag(hdev, HCI_CONFIG)) {
777 hdev->pairing_opts = rp->pairing_opts;
778 hdev->max_enc_key_size = rp->max_key_size;
779 }
780}
781
782static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
783 struct sk_buff *skb)
784{
785 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;
786
787 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
788
789 if (rp->status)
790 return;
791
792 if (test_bit(HCI_INIT, &hdev->flags)) {
793 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
794 hdev->page_scan_window = __le16_to_cpu(rp->window);
795 }
796}
797
798static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
799 struct sk_buff *skb)
800{
801 u8 status = *((u8 *) skb->data);
802 struct hci_cp_write_page_scan_activity *sent;
803
804 BT_DBG("%s status 0x%2.2x", hdev->name, status);
805
806 if (status)
807 return;
808
809 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
810 if (!sent)
811 return;
812
813 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
814 hdev->page_scan_window = __le16_to_cpu(sent->window);
815}
816
817static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
818 struct sk_buff *skb)
819{
820 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
821
822 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
823
824 if (rp->status)
825 return;
826
827 if (test_bit(HCI_INIT, &hdev->flags))
828 hdev->page_scan_type = rp->type;
829}
830
831static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
832 struct sk_buff *skb)
833{
834 u8 status = *((u8 *) skb->data);
835 u8 *type;
836
837 BT_DBG("%s status 0x%2.2x", hdev->name, status);
838
839 if (status)
840 return;
841
842 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
843 if (type)
844 hdev->page_scan_type = *type;
845}
846
847static void hci_cc_read_data_block_size(struct hci_dev *hdev,
848 struct sk_buff *skb)
849{
850 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
851
852 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
853
854 if (rp->status)
855 return;
856
857 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
858 hdev->block_len = __le16_to_cpu(rp->block_len);
859 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
860
861 hdev->block_cnt = hdev->num_blocks;
862
863 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
864 hdev->block_cnt, hdev->block_len);
865}
866
867static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
868{
869 struct hci_rp_read_clock *rp = (void *) skb->data;
870 struct hci_cp_read_clock *cp;
871 struct hci_conn *conn;
872
873 BT_DBG("%s", hdev->name);
874
875 if (skb->len < sizeof(*rp))
876 return;
877
878 if (rp->status)
879 return;
880
881 hci_dev_lock(hdev);
882
883 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
884 if (!cp)
885 goto unlock;
886
887 if (cp->which == 0x00) {
888 hdev->clock = le32_to_cpu(rp->clock);
889 goto unlock;
890 }
891
892 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
893 if (conn) {
894 conn->clock = le32_to_cpu(rp->clock);
895 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
896 }
897
898unlock:
899 hci_dev_unlock(hdev);
900}
901
902static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
903 struct sk_buff *skb)
904{
905 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
906
907 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
908
909 if (rp->status)
910 return;
911
912 hdev->amp_status = rp->amp_status;
913 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
914 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
915 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
916 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
917 hdev->amp_type = rp->amp_type;
918 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
919 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
920 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
921 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
922}
923
924static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
925 struct sk_buff *skb)
926{
927 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
928
929 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
930
931 if (rp->status)
932 return;
933
934 hdev->inq_tx_power = rp->tx_power;
935}
936
937static void hci_cc_read_def_err_data_reporting(struct hci_dev *hdev,
938 struct sk_buff *skb)
939{
940 struct hci_rp_read_def_err_data_reporting *rp = (void *)skb->data;
941
942 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
943
944 if (rp->status)
945 return;
946
947 hdev->err_data_reporting = rp->err_data_reporting;
948}
949
950static void hci_cc_write_def_err_data_reporting(struct hci_dev *hdev,
951 struct sk_buff *skb)
952{
953 __u8 status = *((__u8 *)skb->data);
954 struct hci_cp_write_def_err_data_reporting *cp;
955
956 BT_DBG("%s status 0x%2.2x", hdev->name, status);
957
958 if (status)
959 return;
960
961 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
962 if (!cp)
963 return;
964
965 hdev->err_data_reporting = cp->err_data_reporting;
966}
967
968static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
969{
970 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
971 struct hci_cp_pin_code_reply *cp;
972 struct hci_conn *conn;
973
974 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
975
976 hci_dev_lock(hdev);
977
978 if (hci_dev_test_flag(hdev, HCI_MGMT))
979 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
980
981 if (rp->status)
982 goto unlock;
983
984 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
985 if (!cp)
986 goto unlock;
987
988 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
989 if (conn)
990 conn->pin_length = cp->pin_len;
991
992unlock:
993 hci_dev_unlock(hdev);
994}
995
996static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
997{
998 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
999
1000 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1001
1002 hci_dev_lock(hdev);
1003
1004 if (hci_dev_test_flag(hdev, HCI_MGMT))
1005 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1006 rp->status);
1007
1008 hci_dev_unlock(hdev);
1009}
1010
1011static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
1012 struct sk_buff *skb)
1013{
1014 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
1015
1016 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1017
1018 if (rp->status)
1019 return;
1020
1021 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1022 hdev->le_pkts = rp->le_max_pkt;
1023
1024 hdev->le_cnt = hdev->le_pkts;
1025
1026 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1027}
1028
1029static void hci_cc_le_read_local_features(struct hci_dev *hdev,
1030 struct sk_buff *skb)
1031{
1032 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
1033
1034 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1035
1036 if (rp->status)
1037 return;
1038
1039 memcpy(hdev->le_features, rp->features, 8);
1040}
1041
1042static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
1043 struct sk_buff *skb)
1044{
1045 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
1046
1047 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1048
1049 if (rp->status)
1050 return;
1051
1052 hdev->adv_tx_power = rp->tx_power;
1053}
1054
1055static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
1056{
1057 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1058
1059 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1060
1061 hci_dev_lock(hdev);
1062
1063 if (hci_dev_test_flag(hdev, HCI_MGMT))
1064 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1065 rp->status);
1066
1067 hci_dev_unlock(hdev);
1068}
1069
1070static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
1071 struct sk_buff *skb)
1072{
1073 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1074
1075 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1076
1077 hci_dev_lock(hdev);
1078
1079 if (hci_dev_test_flag(hdev, HCI_MGMT))
1080 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1081 ACL_LINK, 0, rp->status);
1082
1083 hci_dev_unlock(hdev);
1084}
1085
1086static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
1087{
1088 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1089
1090 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1091
1092 hci_dev_lock(hdev);
1093
1094 if (hci_dev_test_flag(hdev, HCI_MGMT))
1095 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1096 0, rp->status);
1097
1098 hci_dev_unlock(hdev);
1099}
1100
1101static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
1102 struct sk_buff *skb)
1103{
1104 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1105
1106 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1107
1108 hci_dev_lock(hdev);
1109
1110 if (hci_dev_test_flag(hdev, HCI_MGMT))
1111 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1112 ACL_LINK, 0, rp->status);
1113
1114 hci_dev_unlock(hdev);
1115}
1116
1117static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
1118 struct sk_buff *skb)
1119{
1120 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
1121
1122 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1123}
1124
1125static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
1126 struct sk_buff *skb)
1127{
1128 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1129
1130 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1131}
1132
1133static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1134{
1135 __u8 status = *((__u8 *) skb->data);
1136 bdaddr_t *sent;
1137
1138 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1139
1140 if (status)
1141 return;
1142
1143 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1144 if (!sent)
1145 return;
1146
1147 hci_dev_lock(hdev);
1148
1149 bacpy(&hdev->random_addr, sent);
1150
1151 hci_dev_unlock(hdev);
1152}
1153
1154static void hci_cc_le_set_default_phy(struct hci_dev *hdev, struct sk_buff *skb)
1155{
1156 __u8 status = *((__u8 *) skb->data);
1157 struct hci_cp_le_set_default_phy *cp;
1158
1159 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1160
1161 if (status)
1162 return;
1163
1164 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1165 if (!cp)
1166 return;
1167
1168 hci_dev_lock(hdev);
1169
1170 hdev->le_tx_def_phys = cp->tx_phys;
1171 hdev->le_rx_def_phys = cp->rx_phys;
1172
1173 hci_dev_unlock(hdev);
1174}
1175
1176static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev,
1177 struct sk_buff *skb)
1178{
1179 __u8 status = *((__u8 *) skb->data);
1180 struct hci_cp_le_set_adv_set_rand_addr *cp;
1181 struct adv_info *adv_instance;
1182
1183 if (status)
1184 return;
1185
1186 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1187 if (!cp)
1188 return;
1189
1190 hci_dev_lock(hdev);
1191
1192 if (!hdev->cur_adv_instance) {
1193 /* Store in hdev for instance 0 (Set adv and Directed advs) */
1194 bacpy(&hdev->random_addr, &cp->bdaddr);
1195 } else {
1196 adv_instance = hci_find_adv_instance(hdev,
1197 hdev->cur_adv_instance);
1198 if (adv_instance)
1199 bacpy(&adv_instance->random_addr, &cp->bdaddr);
1200 }
1201
1202 hci_dev_unlock(hdev);
1203}
1204
1205static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1206{
1207 __u8 *sent, status = *((__u8 *) skb->data);
1208
1209 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1210
1211 if (status)
1212 return;
1213
1214 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1215 if (!sent)
1216 return;
1217
1218 hci_dev_lock(hdev);
1219
1220 /* If we're doing connection initiation as peripheral. Set a
1221 * timeout in case something goes wrong.
1222 */
1223 if (*sent) {
1224 struct hci_conn *conn;
1225
1226 hci_dev_set_flag(hdev, HCI_LE_ADV);
1227
1228 conn = hci_lookup_le_connect(hdev);
1229 if (conn)
1230 queue_delayed_work(hdev->workqueue,
1231 &conn->le_conn_timeout,
1232 conn->conn_timeout);
1233 } else {
1234 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1235 }
1236
1237 hci_dev_unlock(hdev);
1238}
1239
1240static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev,
1241 struct sk_buff *skb)
1242{
1243 struct hci_cp_le_set_ext_adv_enable *cp;
1244 __u8 status = *((__u8 *) skb->data);
1245
1246 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1247
1248 if (status)
1249 return;
1250
1251 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1252 if (!cp)
1253 return;
1254
1255 hci_dev_lock(hdev);
1256
1257 if (cp->enable) {
1258 struct hci_conn *conn;
1259
1260 hci_dev_set_flag(hdev, HCI_LE_ADV);
1261
1262 conn = hci_lookup_le_connect(hdev);
1263 if (conn)
1264 queue_delayed_work(hdev->workqueue,
1265 &conn->le_conn_timeout,
1266 conn->conn_timeout);
1267 } else {
1268 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1269 }
1270
1271 hci_dev_unlock(hdev);
1272}
1273
1274static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1275{
1276 struct hci_cp_le_set_scan_param *cp;
1277 __u8 status = *((__u8 *) skb->data);
1278
1279 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1280
1281 if (status)
1282 return;
1283
1284 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1285 if (!cp)
1286 return;
1287
1288 hci_dev_lock(hdev);
1289
1290 hdev->le_scan_type = cp->type;
1291
1292 hci_dev_unlock(hdev);
1293}
1294
1295static void hci_cc_le_set_ext_scan_param(struct hci_dev *hdev,
1296 struct sk_buff *skb)
1297{
1298 struct hci_cp_le_set_ext_scan_params *cp;
1299 __u8 status = *((__u8 *) skb->data);
1300 struct hci_cp_le_scan_phy_params *phy_param;
1301
1302 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1303
1304 if (status)
1305 return;
1306
1307 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1308 if (!cp)
1309 return;
1310
1311 phy_param = (void *)cp->data;
1312
1313 hci_dev_lock(hdev);
1314
1315 hdev->le_scan_type = phy_param->type;
1316
1317 hci_dev_unlock(hdev);
1318}
1319
1320static bool has_pending_adv_report(struct hci_dev *hdev)
1321{
1322 struct discovery_state *d = &hdev->discovery;
1323
1324 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1325}
1326
1327static void clear_pending_adv_report(struct hci_dev *hdev)
1328{
1329 struct discovery_state *d = &hdev->discovery;
1330
1331 bacpy(&d->last_adv_addr, BDADDR_ANY);
1332 d->last_adv_data_len = 0;
1333}
1334
1335static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1336 u8 bdaddr_type, s8 rssi, u32 flags,
1337 u8 *data, u8 len)
1338{
1339 struct discovery_state *d = &hdev->discovery;
1340
1341 if (len > HCI_MAX_AD_LENGTH)
1342 return;
1343
1344 bacpy(&d->last_adv_addr, bdaddr);
1345 d->last_adv_addr_type = bdaddr_type;
1346 d->last_adv_rssi = rssi;
1347 d->last_adv_flags = flags;
1348 memcpy(d->last_adv_data, data, len);
1349 d->last_adv_data_len = len;
1350}
1351
1352static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1353{
1354 hci_dev_lock(hdev);
1355
1356 switch (enable) {
1357 case LE_SCAN_ENABLE:
1358 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1359 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1360 clear_pending_adv_report(hdev);
1361 break;
1362
1363 case LE_SCAN_DISABLE:
1364 /* We do this here instead of when setting DISCOVERY_STOPPED
1365 * since the latter would potentially require waiting for
1366 * inquiry to stop too.
1367 */
1368 if (has_pending_adv_report(hdev)) {
1369 struct discovery_state *d = &hdev->discovery;
1370
1371 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1372 d->last_adv_addr_type, NULL,
1373 d->last_adv_rssi, d->last_adv_flags,
1374 d->last_adv_data,
1375 d->last_adv_data_len, NULL, 0);
1376 }
1377
1378 /* Cancel this timer so that we don't try to disable scanning
1379 * when it's already disabled.
1380 */
1381 cancel_delayed_work(&hdev->le_scan_disable);
1382
1383 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1384
1385 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1386 * interrupted scanning due to a connect request. Mark
1387 * therefore discovery as stopped. If this was not
1388 * because of a connect request advertising might have
1389 * been disabled because of active scanning, so
1390 * re-enable it again if necessary.
1391 */
1392 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1393 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1394 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1395 hdev->discovery.state == DISCOVERY_FINDING)
1396 hci_req_reenable_advertising(hdev);
1397
1398 break;
1399
1400 default:
1401 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1402 enable);
1403 break;
1404 }
1405
1406 hci_dev_unlock(hdev);
1407}
1408
1409static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1410 struct sk_buff *skb)
1411{
1412 struct hci_cp_le_set_scan_enable *cp;
1413 __u8 status = *((__u8 *) skb->data);
1414
1415 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1416
1417 if (status)
1418 return;
1419
1420 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1421 if (!cp)
1422 return;
1423
1424 le_set_scan_enable_complete(hdev, cp->enable);
1425}
1426
1427static void hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev,
1428 struct sk_buff *skb)
1429{
1430 struct hci_cp_le_set_ext_scan_enable *cp;
1431 __u8 status = *((__u8 *) skb->data);
1432
1433 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1434
1435 if (status)
1436 return;
1437
1438 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1439 if (!cp)
1440 return;
1441
1442 le_set_scan_enable_complete(hdev, cp->enable);
1443}
1444
1445static void hci_cc_le_read_num_adv_sets(struct hci_dev *hdev,
1446 struct sk_buff *skb)
1447{
1448 struct hci_rp_le_read_num_supported_adv_sets *rp = (void *) skb->data;
1449
1450 BT_DBG("%s status 0x%2.2x No of Adv sets %u", hdev->name, rp->status,
1451 rp->num_of_sets);
1452
1453 if (rp->status)
1454 return;
1455
1456 hdev->le_num_of_adv_sets = rp->num_of_sets;
1457}
1458
1459static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1460 struct sk_buff *skb)
1461{
1462 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1463
1464 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1465
1466 if (rp->status)
1467 return;
1468
1469 hdev->le_white_list_size = rp->size;
1470}
1471
1472static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1473 struct sk_buff *skb)
1474{
1475 __u8 status = *((__u8 *) skb->data);
1476
1477 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1478
1479 if (status)
1480 return;
1481
1482 hci_bdaddr_list_clear(&hdev->le_white_list);
1483}
1484
1485static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1486 struct sk_buff *skb)
1487{
1488 struct hci_cp_le_add_to_white_list *sent;
1489 __u8 status = *((__u8 *) skb->data);
1490
1491 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1492
1493 if (status)
1494 return;
1495
1496 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1497 if (!sent)
1498 return;
1499
1500 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1501 sent->bdaddr_type);
1502}
1503
1504static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1505 struct sk_buff *skb)
1506{
1507 struct hci_cp_le_del_from_white_list *sent;
1508 __u8 status = *((__u8 *) skb->data);
1509
1510 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1511
1512 if (status)
1513 return;
1514
1515 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1516 if (!sent)
1517 return;
1518
1519 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1520 sent->bdaddr_type);
1521}
1522
1523static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1524 struct sk_buff *skb)
1525{
1526 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1527
1528 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1529
1530 if (rp->status)
1531 return;
1532
1533 memcpy(hdev->le_states, rp->le_states, 8);
1534}
1535
1536static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1537 struct sk_buff *skb)
1538{
1539 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1540
1541 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1542
1543 if (rp->status)
1544 return;
1545
1546 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1547 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1548}
1549
1550static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1551 struct sk_buff *skb)
1552{
1553 struct hci_cp_le_write_def_data_len *sent;
1554 __u8 status = *((__u8 *) skb->data);
1555
1556 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1557
1558 if (status)
1559 return;
1560
1561 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1562 if (!sent)
1563 return;
1564
1565 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1566 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1567}
1568
1569static void hci_cc_le_add_to_resolv_list(struct hci_dev *hdev,
1570 struct sk_buff *skb)
1571{
1572 struct hci_cp_le_add_to_resolv_list *sent;
1573 __u8 status = *((__u8 *) skb->data);
1574
1575 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1576
1577 if (status)
1578 return;
1579
1580 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
1581 if (!sent)
1582 return;
1583
1584 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
1585 sent->bdaddr_type, sent->peer_irk,
1586 sent->local_irk);
1587}
1588
1589static void hci_cc_le_del_from_resolv_list(struct hci_dev *hdev,
1590 struct sk_buff *skb)
1591{
1592 struct hci_cp_le_del_from_resolv_list *sent;
1593 __u8 status = *((__u8 *) skb->data);
1594
1595 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1596
1597 if (status)
1598 return;
1599
1600 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
1601 if (!sent)
1602 return;
1603
1604 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
1605 sent->bdaddr_type);
1606}
1607
1608static void hci_cc_le_clear_resolv_list(struct hci_dev *hdev,
1609 struct sk_buff *skb)
1610{
1611 __u8 status = *((__u8 *) skb->data);
1612
1613 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1614
1615 if (status)
1616 return;
1617
1618 hci_bdaddr_list_clear(&hdev->le_resolv_list);
1619}
1620
1621static void hci_cc_le_read_resolv_list_size(struct hci_dev *hdev,
1622 struct sk_buff *skb)
1623{
1624 struct hci_rp_le_read_resolv_list_size *rp = (void *) skb->data;
1625
1626 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1627
1628 if (rp->status)
1629 return;
1630
1631 hdev->le_resolv_list_size = rp->size;
1632}
1633
1634static void hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev,
1635 struct sk_buff *skb)
1636{
1637 __u8 *sent, status = *((__u8 *) skb->data);
1638
1639 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1640
1641 if (status)
1642 return;
1643
1644 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
1645 if (!sent)
1646 return;
1647
1648 hci_dev_lock(hdev);
1649
1650 if (*sent)
1651 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
1652 else
1653 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
1654
1655 hci_dev_unlock(hdev);
1656}
1657
1658static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1659 struct sk_buff *skb)
1660{
1661 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1662
1663 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1664
1665 if (rp->status)
1666 return;
1667
1668 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1669 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1670 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1671 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1672}
1673
1674static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1675 struct sk_buff *skb)
1676{
1677 struct hci_cp_write_le_host_supported *sent;
1678 __u8 status = *((__u8 *) skb->data);
1679
1680 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1681
1682 if (status)
1683 return;
1684
1685 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1686 if (!sent)
1687 return;
1688
1689 hci_dev_lock(hdev);
1690
1691 if (sent->le) {
1692 hdev->features[1][0] |= LMP_HOST_LE;
1693 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1694 } else {
1695 hdev->features[1][0] &= ~LMP_HOST_LE;
1696 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
1697 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1698 }
1699
1700 if (sent->simul)
1701 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1702 else
1703 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1704
1705 hci_dev_unlock(hdev);
1706}
1707
1708static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1709{
1710 struct hci_cp_le_set_adv_param *cp;
1711 u8 status = *((u8 *) skb->data);
1712
1713 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1714
1715 if (status)
1716 return;
1717
1718 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1719 if (!cp)
1720 return;
1721
1722 hci_dev_lock(hdev);
1723 hdev->adv_addr_type = cp->own_address_type;
1724 hci_dev_unlock(hdev);
1725}
1726
1727static void hci_cc_set_ext_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1728{
1729 struct hci_rp_le_set_ext_adv_params *rp = (void *) skb->data;
1730 struct hci_cp_le_set_ext_adv_params *cp;
1731 struct adv_info *adv_instance;
1732
1733 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1734
1735 if (rp->status)
1736 return;
1737
1738 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
1739 if (!cp)
1740 return;
1741
1742 hci_dev_lock(hdev);
1743 hdev->adv_addr_type = cp->own_addr_type;
1744 if (!hdev->cur_adv_instance) {
1745 /* Store in hdev for instance 0 */
1746 hdev->adv_tx_power = rp->tx_power;
1747 } else {
1748 adv_instance = hci_find_adv_instance(hdev,
1749 hdev->cur_adv_instance);
1750 if (adv_instance)
1751 adv_instance->tx_power = rp->tx_power;
1752 }
1753 /* Update adv data as tx power is known now */
1754 hci_req_update_adv_data(hdev, hdev->cur_adv_instance);
1755 hci_dev_unlock(hdev);
1756}
1757
1758static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1759{
1760 struct hci_rp_read_rssi *rp = (void *) skb->data;
1761 struct hci_conn *conn;
1762
1763 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1764
1765 if (rp->status)
1766 return;
1767
1768 hci_dev_lock(hdev);
1769
1770 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1771 if (conn)
1772 conn->rssi = rp->rssi;
1773
1774 hci_dev_unlock(hdev);
1775}
1776
1777static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1778{
1779 struct hci_cp_read_tx_power *sent;
1780 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1781 struct hci_conn *conn;
1782
1783 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1784
1785 if (rp->status)
1786 return;
1787
1788 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1789 if (!sent)
1790 return;
1791
1792 hci_dev_lock(hdev);
1793
1794 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1795 if (!conn)
1796 goto unlock;
1797
1798 switch (sent->type) {
1799 case 0x00:
1800 conn->tx_power = rp->tx_power;
1801 break;
1802 case 0x01:
1803 conn->max_tx_power = rp->tx_power;
1804 break;
1805 }
1806
1807unlock:
1808 hci_dev_unlock(hdev);
1809}
1810
1811static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
1812{
1813 u8 status = *((u8 *) skb->data);
1814 u8 *mode;
1815
1816 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1817
1818 if (status)
1819 return;
1820
1821 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
1822 if (mode)
1823 hdev->ssp_debug_mode = *mode;
1824}
1825
1826static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1827{
1828 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1829
1830 if (status) {
1831 hci_conn_check_pending(hdev);
1832 return;
1833 }
1834
1835 set_bit(HCI_INQUIRY, &hdev->flags);
1836}
1837
1838static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1839{
1840 struct hci_cp_create_conn *cp;
1841 struct hci_conn *conn;
1842
1843 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1844
1845 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1846 if (!cp)
1847 return;
1848
1849 hci_dev_lock(hdev);
1850
1851 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1852
1853 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1854
1855 if (status) {
1856 if (conn && conn->state == BT_CONNECT) {
1857 if (status != 0x0c || conn->attempt > 2) {
1858 conn->state = BT_CLOSED;
1859 hci_connect_cfm(conn, status);
1860 hci_conn_del(conn);
1861 } else
1862 conn->state = BT_CONNECT2;
1863 }
1864 } else {
1865 if (!conn) {
1866 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1867 HCI_ROLE_MASTER);
1868 if (!conn)
1869 bt_dev_err(hdev, "no memory for new connection");
1870 }
1871 }
1872
1873 hci_dev_unlock(hdev);
1874}
1875
1876static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1877{
1878 struct hci_cp_add_sco *cp;
1879 struct hci_conn *acl, *sco;
1880 __u16 handle;
1881
1882 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1883
1884 if (!status)
1885 return;
1886
1887 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1888 if (!cp)
1889 return;
1890
1891 handle = __le16_to_cpu(cp->handle);
1892
1893 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1894
1895 hci_dev_lock(hdev);
1896
1897 acl = hci_conn_hash_lookup_handle(hdev, handle);
1898 if (acl) {
1899 sco = acl->link;
1900 if (sco) {
1901 sco->state = BT_CLOSED;
1902
1903 hci_connect_cfm(sco, status);
1904 hci_conn_del(sco);
1905 }
1906 }
1907
1908 hci_dev_unlock(hdev);
1909}
1910
1911static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1912{
1913 struct hci_cp_auth_requested *cp;
1914 struct hci_conn *conn;
1915
1916 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1917
1918 if (!status)
1919 return;
1920
1921 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1922 if (!cp)
1923 return;
1924
1925 hci_dev_lock(hdev);
1926
1927 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1928 if (conn) {
1929 if (conn->state == BT_CONFIG) {
1930 hci_connect_cfm(conn, status);
1931 hci_conn_drop(conn);
1932 }
1933 }
1934
1935 hci_dev_unlock(hdev);
1936}
1937
1938static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1939{
1940 struct hci_cp_set_conn_encrypt *cp;
1941 struct hci_conn *conn;
1942
1943 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1944
1945 if (!status)
1946 return;
1947
1948 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1949 if (!cp)
1950 return;
1951
1952 hci_dev_lock(hdev);
1953
1954 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1955 if (conn) {
1956 if (conn->state == BT_CONFIG) {
1957 hci_connect_cfm(conn, status);
1958 hci_conn_drop(conn);
1959 }
1960 }
1961
1962 hci_dev_unlock(hdev);
1963}
1964
1965static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1966 struct hci_conn *conn)
1967{
1968 if (conn->state != BT_CONFIG || !conn->out)
1969 return 0;
1970
1971 if (conn->pending_sec_level == BT_SECURITY_SDP)
1972 return 0;
1973
1974 /* Only request authentication for SSP connections or non-SSP
1975 * devices with sec_level MEDIUM or HIGH or if MITM protection
1976 * is requested.
1977 */
1978 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1979 conn->pending_sec_level != BT_SECURITY_FIPS &&
1980 conn->pending_sec_level != BT_SECURITY_HIGH &&
1981 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1982 return 0;
1983
1984 return 1;
1985}
1986
1987static int hci_resolve_name(struct hci_dev *hdev,
1988 struct inquiry_entry *e)
1989{
1990 struct hci_cp_remote_name_req cp;
1991
1992 memset(&cp, 0, sizeof(cp));
1993
1994 bacpy(&cp.bdaddr, &e->data.bdaddr);
1995 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1996 cp.pscan_mode = e->data.pscan_mode;
1997 cp.clock_offset = e->data.clock_offset;
1998
1999 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2000}
2001
2002static bool hci_resolve_next_name(struct hci_dev *hdev)
2003{
2004 struct discovery_state *discov = &hdev->discovery;
2005 struct inquiry_entry *e;
2006
2007 if (list_empty(&discov->resolve))
2008 return false;
2009
2010 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2011 if (!e)
2012 return false;
2013
2014 if (hci_resolve_name(hdev, e) == 0) {
2015 e->name_state = NAME_PENDING;
2016 return true;
2017 }
2018
2019 return false;
2020}
2021
2022static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2023 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2024{
2025 struct discovery_state *discov = &hdev->discovery;
2026 struct inquiry_entry *e;
2027
2028 /* Update the mgmt connected state if necessary. Be careful with
2029 * conn objects that exist but are not (yet) connected however.
2030 * Only those in BT_CONFIG or BT_CONNECTED states can be
2031 * considered connected.
2032 */
2033 if (conn &&
2034 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2035 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2036 mgmt_device_connected(hdev, conn, 0, name, name_len);
2037
2038 if (discov->state == DISCOVERY_STOPPED)
2039 return;
2040
2041 if (discov->state == DISCOVERY_STOPPING)
2042 goto discov_complete;
2043
2044 if (discov->state != DISCOVERY_RESOLVING)
2045 return;
2046
2047 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2048 /* If the device was not found in a list of found devices names of which
2049 * are pending. there is no need to continue resolving a next name as it
2050 * will be done upon receiving another Remote Name Request Complete
2051 * Event */
2052 if (!e)
2053 return;
2054
2055 list_del(&e->list);
2056 if (name) {
2057 e->name_state = NAME_KNOWN;
2058 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
2059 e->data.rssi, name, name_len);
2060 } else {
2061 e->name_state = NAME_NOT_KNOWN;
2062 }
2063
2064 if (hci_resolve_next_name(hdev))
2065 return;
2066
2067discov_complete:
2068 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2069}
2070
2071static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2072{
2073 struct hci_cp_remote_name_req *cp;
2074 struct hci_conn *conn;
2075
2076 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2077
2078 /* If successful wait for the name req complete event before
2079 * checking for the need to do authentication */
2080 if (!status)
2081 return;
2082
2083 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2084 if (!cp)
2085 return;
2086
2087 hci_dev_lock(hdev);
2088
2089 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2090
2091 if (hci_dev_test_flag(hdev, HCI_MGMT))
2092 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2093
2094 if (!conn)
2095 goto unlock;
2096
2097 if (!hci_outgoing_auth_needed(hdev, conn))
2098 goto unlock;
2099
2100 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2101 struct hci_cp_auth_requested auth_cp;
2102
2103 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2104
2105 auth_cp.handle = __cpu_to_le16(conn->handle);
2106 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2107 sizeof(auth_cp), &auth_cp);
2108 }
2109
2110unlock:
2111 hci_dev_unlock(hdev);
2112}
2113
2114static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2115{
2116 struct hci_cp_read_remote_features *cp;
2117 struct hci_conn *conn;
2118
2119 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2120
2121 if (!status)
2122 return;
2123
2124 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2125 if (!cp)
2126 return;
2127
2128 hci_dev_lock(hdev);
2129
2130 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2131 if (conn) {
2132 if (conn->state == BT_CONFIG) {
2133 hci_connect_cfm(conn, status);
2134 hci_conn_drop(conn);
2135 }
2136 }
2137
2138 hci_dev_unlock(hdev);
2139}
2140
2141static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2142{
2143 struct hci_cp_read_remote_ext_features *cp;
2144 struct hci_conn *conn;
2145
2146 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2147
2148 if (!status)
2149 return;
2150
2151 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2152 if (!cp)
2153 return;
2154
2155 hci_dev_lock(hdev);
2156
2157 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2158 if (conn) {
2159 if (conn->state == BT_CONFIG) {
2160 hci_connect_cfm(conn, status);
2161 hci_conn_drop(conn);
2162 }
2163 }
2164
2165 hci_dev_unlock(hdev);
2166}
2167
2168static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2169{
2170 struct hci_cp_setup_sync_conn *cp;
2171 struct hci_conn *acl, *sco;
2172 __u16 handle;
2173
2174 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2175
2176 if (!status)
2177 return;
2178
2179 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2180 if (!cp)
2181 return;
2182
2183 handle = __le16_to_cpu(cp->handle);
2184
2185 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
2186
2187 hci_dev_lock(hdev);
2188
2189 acl = hci_conn_hash_lookup_handle(hdev, handle);
2190 if (acl) {
2191 sco = acl->link;
2192 if (sco) {
2193 sco->state = BT_CLOSED;
2194
2195 hci_connect_cfm(sco, status);
2196 hci_conn_del(sco);
2197 }
2198 }
2199
2200 hci_dev_unlock(hdev);
2201}
2202
2203static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2204{
2205 struct hci_cp_sniff_mode *cp;
2206 struct hci_conn *conn;
2207
2208 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2209
2210 if (!status)
2211 return;
2212
2213 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2214 if (!cp)
2215 return;
2216
2217 hci_dev_lock(hdev);
2218
2219 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2220 if (conn) {
2221 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2222
2223 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2224 hci_sco_setup(conn, status);
2225 }
2226
2227 hci_dev_unlock(hdev);
2228}
2229
2230static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2231{
2232 struct hci_cp_exit_sniff_mode *cp;
2233 struct hci_conn *conn;
2234
2235 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2236
2237 if (!status)
2238 return;
2239
2240 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2241 if (!cp)
2242 return;
2243
2244 hci_dev_lock(hdev);
2245
2246 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2247 if (conn) {
2248 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2249
2250 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2251 hci_sco_setup(conn, status);
2252 }
2253
2254 hci_dev_unlock(hdev);
2255}
2256
2257static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2258{
2259 struct hci_cp_disconnect *cp;
2260 struct hci_conn *conn;
2261
2262 if (!status)
2263 return;
2264
2265 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2266 if (!cp)
2267 return;
2268
2269 hci_dev_lock(hdev);
2270
2271 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2272 if (conn) {
2273 u8 type = conn->type;
2274
2275 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2276 conn->dst_type, status);
2277
2278 /* If the disconnection failed for any reason, the upper layer
2279 * does not retry to disconnect in current implementation.
2280 * Hence, we need to do some basic cleanup here and re-enable
2281 * advertising if necessary.
2282 */
2283 hci_conn_del(conn);
2284 if (type == LE_LINK)
2285 hci_req_reenable_advertising(hdev);
2286 }
2287
2288 hci_dev_unlock(hdev);
2289}
2290
2291static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2292 u8 peer_addr_type, u8 own_address_type,
2293 u8 filter_policy)
2294{
2295 struct hci_conn *conn;
2296
2297 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2298 peer_addr_type);
2299 if (!conn)
2300 return;
2301
2302 /* When using controller based address resolution, then the new
2303 * address types 0x02 and 0x03 are used. These types need to be
2304 * converted back into either public address or random address type
2305 */
2306 if (use_ll_privacy(hdev) &&
2307 hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
2308 switch (own_address_type) {
2309 case ADDR_LE_DEV_PUBLIC_RESOLVED:
2310 own_address_type = ADDR_LE_DEV_PUBLIC;
2311 break;
2312 case ADDR_LE_DEV_RANDOM_RESOLVED:
2313 own_address_type = ADDR_LE_DEV_RANDOM;
2314 break;
2315 }
2316 }
2317
2318 /* Store the initiator and responder address information which
2319 * is needed for SMP. These values will not change during the
2320 * lifetime of the connection.
2321 */
2322 conn->init_addr_type = own_address_type;
2323 if (own_address_type == ADDR_LE_DEV_RANDOM)
2324 bacpy(&conn->init_addr, &hdev->random_addr);
2325 else
2326 bacpy(&conn->init_addr, &hdev->bdaddr);
2327
2328 conn->resp_addr_type = peer_addr_type;
2329 bacpy(&conn->resp_addr, peer_addr);
2330
2331 /* We don't want the connection attempt to stick around
2332 * indefinitely since LE doesn't have a page timeout concept
2333 * like BR/EDR. Set a timer for any connection that doesn't use
2334 * the white list for connecting.
2335 */
2336 if (filter_policy == HCI_LE_USE_PEER_ADDR)
2337 queue_delayed_work(conn->hdev->workqueue,
2338 &conn->le_conn_timeout,
2339 conn->conn_timeout);
2340}
2341
2342static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2343{
2344 struct hci_cp_le_create_conn *cp;
2345
2346 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2347
2348 /* All connection failure handling is taken care of by the
2349 * hci_le_conn_failed function which is triggered by the HCI
2350 * request completion callbacks used for connecting.
2351 */
2352 if (status)
2353 return;
2354
2355 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2356 if (!cp)
2357 return;
2358
2359 hci_dev_lock(hdev);
2360
2361 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2362 cp->own_address_type, cp->filter_policy);
2363
2364 hci_dev_unlock(hdev);
2365}
2366
2367static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2368{
2369 struct hci_cp_le_ext_create_conn *cp;
2370
2371 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2372
2373 /* All connection failure handling is taken care of by the
2374 * hci_le_conn_failed function which is triggered by the HCI
2375 * request completion callbacks used for connecting.
2376 */
2377 if (status)
2378 return;
2379
2380 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2381 if (!cp)
2382 return;
2383
2384 hci_dev_lock(hdev);
2385
2386 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2387 cp->own_addr_type, cp->filter_policy);
2388
2389 hci_dev_unlock(hdev);
2390}
2391
2392static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2393{
2394 struct hci_cp_le_read_remote_features *cp;
2395 struct hci_conn *conn;
2396
2397 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2398
2399 if (!status)
2400 return;
2401
2402 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2403 if (!cp)
2404 return;
2405
2406 hci_dev_lock(hdev);
2407
2408 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2409 if (conn) {
2410 if (conn->state == BT_CONFIG) {
2411 hci_connect_cfm(conn, status);
2412 hci_conn_drop(conn);
2413 }
2414 }
2415
2416 hci_dev_unlock(hdev);
2417}
2418
2419static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2420{
2421 struct hci_cp_le_start_enc *cp;
2422 struct hci_conn *conn;
2423
2424 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2425
2426 if (!status)
2427 return;
2428
2429 hci_dev_lock(hdev);
2430
2431 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2432 if (!cp)
2433 goto unlock;
2434
2435 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2436 if (!conn)
2437 goto unlock;
2438
2439 if (conn->state != BT_CONNECTED)
2440 goto unlock;
2441
2442 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2443 hci_conn_drop(conn);
2444
2445unlock:
2446 hci_dev_unlock(hdev);
2447}
2448
2449static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2450{
2451 struct hci_cp_switch_role *cp;
2452 struct hci_conn *conn;
2453
2454 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2455
2456 if (!status)
2457 return;
2458
2459 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2460 if (!cp)
2461 return;
2462
2463 hci_dev_lock(hdev);
2464
2465 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2466 if (conn)
2467 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2468
2469 hci_dev_unlock(hdev);
2470}
2471
2472static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2473{
2474 __u8 status = *((__u8 *) skb->data);
2475 struct discovery_state *discov = &hdev->discovery;
2476 struct inquiry_entry *e;
2477
2478 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2479
2480 hci_conn_check_pending(hdev);
2481
2482 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2483 return;
2484
2485 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2486 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2487
2488 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2489 return;
2490
2491 hci_dev_lock(hdev);
2492
2493 if (discov->state != DISCOVERY_FINDING)
2494 goto unlock;
2495
2496 if (list_empty(&discov->resolve)) {
2497 /* When BR/EDR inquiry is active and no LE scanning is in
2498 * progress, then change discovery state to indicate completion.
2499 *
2500 * When running LE scanning and BR/EDR inquiry simultaneously
2501 * and the LE scan already finished, then change the discovery
2502 * state to indicate completion.
2503 */
2504 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2505 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2506 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2507 goto unlock;
2508 }
2509
2510 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2511 if (e && hci_resolve_name(hdev, e) == 0) {
2512 e->name_state = NAME_PENDING;
2513 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2514 } else {
2515 /* When BR/EDR inquiry is active and no LE scanning is in
2516 * progress, then change discovery state to indicate completion.
2517 *
2518 * When running LE scanning and BR/EDR inquiry simultaneously
2519 * and the LE scan already finished, then change the discovery
2520 * state to indicate completion.
2521 */
2522 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2523 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2524 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2525 }
2526
2527unlock:
2528 hci_dev_unlock(hdev);
2529}
2530
2531static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2532{
2533 struct inquiry_data data;
2534 struct inquiry_info *info = (void *) (skb->data + 1);
2535 int num_rsp = *((__u8 *) skb->data);
2536
2537 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2538
2539 if (!num_rsp || skb->len < num_rsp * sizeof(*info) + 1)
2540 return;
2541
2542 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2543 return;
2544
2545 hci_dev_lock(hdev);
2546
2547 for (; num_rsp; num_rsp--, info++) {
2548 u32 flags;
2549
2550 bacpy(&data.bdaddr, &info->bdaddr);
2551 data.pscan_rep_mode = info->pscan_rep_mode;
2552 data.pscan_period_mode = info->pscan_period_mode;
2553 data.pscan_mode = info->pscan_mode;
2554 memcpy(data.dev_class, info->dev_class, 3);
2555 data.clock_offset = info->clock_offset;
2556 data.rssi = HCI_RSSI_INVALID;
2557 data.ssp_mode = 0x00;
2558
2559 flags = hci_inquiry_cache_update(hdev, &data, false);
2560
2561 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2562 info->dev_class, HCI_RSSI_INVALID,
2563 flags, NULL, 0, NULL, 0);
2564 }
2565
2566 hci_dev_unlock(hdev);
2567}
2568
2569static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2570{
2571 struct hci_ev_conn_complete *ev = (void *) skb->data;
2572 struct inquiry_entry *ie;
2573 struct hci_conn *conn;
2574
2575 BT_DBG("%s", hdev->name);
2576
2577 hci_dev_lock(hdev);
2578
2579 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2580 if (!conn) {
2581 /* Connection may not exist if auto-connected. Check the inquiry
2582 * cache to see if we've already discovered this bdaddr before.
2583 * If found and link is an ACL type, create a connection class
2584 * automatically.
2585 */
2586 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2587 if (ie && ev->link_type == ACL_LINK) {
2588 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2589 HCI_ROLE_SLAVE);
2590 if (!conn) {
2591 bt_dev_err(hdev, "no memory for new conn");
2592 goto unlock;
2593 }
2594 } else {
2595 if (ev->link_type != SCO_LINK)
2596 goto unlock;
2597
2598 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
2599 &ev->bdaddr);
2600 if (!conn)
2601 goto unlock;
2602
2603 conn->type = SCO_LINK;
2604 }
2605 }
2606
2607 if (!ev->status) {
2608 conn->handle = __le16_to_cpu(ev->handle);
2609
2610 if (conn->type == ACL_LINK) {
2611 conn->state = BT_CONFIG;
2612 hci_conn_hold(conn);
2613
2614 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2615 !hci_find_link_key(hdev, &ev->bdaddr))
2616 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2617 else
2618 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2619 } else
2620 conn->state = BT_CONNECTED;
2621
2622 hci_debugfs_create_conn(conn);
2623 hci_conn_add_sysfs(conn);
2624
2625 if (test_bit(HCI_AUTH, &hdev->flags))
2626 set_bit(HCI_CONN_AUTH, &conn->flags);
2627
2628 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2629 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2630
2631 /* Get remote features */
2632 if (conn->type == ACL_LINK) {
2633 struct hci_cp_read_remote_features cp;
2634 cp.handle = ev->handle;
2635 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2636 sizeof(cp), &cp);
2637
2638 hci_req_update_scan(hdev);
2639 }
2640
2641 /* Set packet type for incoming connection */
2642 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2643 struct hci_cp_change_conn_ptype cp;
2644 cp.handle = ev->handle;
2645 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2646 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2647 &cp);
2648 }
2649 } else {
2650 conn->state = BT_CLOSED;
2651 if (conn->type == ACL_LINK)
2652 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2653 conn->dst_type, ev->status);
2654 }
2655
2656 if (conn->type == ACL_LINK)
2657 hci_sco_setup(conn, ev->status);
2658
2659 if (ev->status) {
2660 hci_connect_cfm(conn, ev->status);
2661 hci_conn_del(conn);
2662 } else if (ev->link_type == SCO_LINK) {
2663 switch (conn->setting & SCO_AIRMODE_MASK) {
2664 case SCO_AIRMODE_CVSD:
2665 if (hdev->notify)
2666 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
2667 break;
2668 }
2669
2670 hci_connect_cfm(conn, ev->status);
2671 }
2672
2673unlock:
2674 hci_dev_unlock(hdev);
2675
2676 hci_conn_check_pending(hdev);
2677}
2678
2679static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2680{
2681 struct hci_cp_reject_conn_req cp;
2682
2683 bacpy(&cp.bdaddr, bdaddr);
2684 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2685 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2686}
2687
2688static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2689{
2690 struct hci_ev_conn_request *ev = (void *) skb->data;
2691 int mask = hdev->link_mode;
2692 struct inquiry_entry *ie;
2693 struct hci_conn *conn;
2694 __u8 flags = 0;
2695
2696 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2697 ev->link_type);
2698
2699 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2700 &flags);
2701
2702 if (!(mask & HCI_LM_ACCEPT)) {
2703 hci_reject_conn(hdev, &ev->bdaddr);
2704 return;
2705 }
2706
2707 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2708 BDADDR_BREDR)) {
2709 hci_reject_conn(hdev, &ev->bdaddr);
2710 return;
2711 }
2712
2713 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2714 * connection. These features are only touched through mgmt so
2715 * only do the checks if HCI_MGMT is set.
2716 */
2717 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
2718 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2719 !hci_bdaddr_list_lookup_with_flags(&hdev->whitelist, &ev->bdaddr,
2720 BDADDR_BREDR)) {
2721 hci_reject_conn(hdev, &ev->bdaddr);
2722 return;
2723 }
2724
2725 /* Connection accepted */
2726
2727 hci_dev_lock(hdev);
2728
2729 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2730 if (ie)
2731 memcpy(ie->data.dev_class, ev->dev_class, 3);
2732
2733 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2734 &ev->bdaddr);
2735 if (!conn) {
2736 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2737 HCI_ROLE_SLAVE);
2738 if (!conn) {
2739 bt_dev_err(hdev, "no memory for new connection");
2740 hci_dev_unlock(hdev);
2741 return;
2742 }
2743 }
2744
2745 memcpy(conn->dev_class, ev->dev_class, 3);
2746
2747 hci_dev_unlock(hdev);
2748
2749 if (ev->link_type == ACL_LINK ||
2750 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2751 struct hci_cp_accept_conn_req cp;
2752 conn->state = BT_CONNECT;
2753
2754 bacpy(&cp.bdaddr, &ev->bdaddr);
2755
2756 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2757 cp.role = 0x00; /* Become master */
2758 else
2759 cp.role = 0x01; /* Remain slave */
2760
2761 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2762 } else if (!(flags & HCI_PROTO_DEFER)) {
2763 struct hci_cp_accept_sync_conn_req cp;
2764 conn->state = BT_CONNECT;
2765
2766 bacpy(&cp.bdaddr, &ev->bdaddr);
2767 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2768
2769 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2770 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2771 cp.max_latency = cpu_to_le16(0xffff);
2772 cp.content_format = cpu_to_le16(hdev->voice_setting);
2773 cp.retrans_effort = 0xff;
2774
2775 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2776 &cp);
2777 } else {
2778 conn->state = BT_CONNECT2;
2779 hci_connect_cfm(conn, 0);
2780 }
2781}
2782
2783static u8 hci_to_mgmt_reason(u8 err)
2784{
2785 switch (err) {
2786 case HCI_ERROR_CONNECTION_TIMEOUT:
2787 return MGMT_DEV_DISCONN_TIMEOUT;
2788 case HCI_ERROR_REMOTE_USER_TERM:
2789 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2790 case HCI_ERROR_REMOTE_POWER_OFF:
2791 return MGMT_DEV_DISCONN_REMOTE;
2792 case HCI_ERROR_LOCAL_HOST_TERM:
2793 return MGMT_DEV_DISCONN_LOCAL_HOST;
2794 default:
2795 return MGMT_DEV_DISCONN_UNKNOWN;
2796 }
2797}
2798
2799static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2800{
2801 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2802 u8 reason;
2803 struct hci_conn_params *params;
2804 struct hci_conn *conn;
2805 bool mgmt_connected;
2806 u8 type;
2807
2808 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2809
2810 hci_dev_lock(hdev);
2811
2812 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2813 if (!conn)
2814 goto unlock;
2815
2816 if (ev->status) {
2817 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2818 conn->dst_type, ev->status);
2819 goto unlock;
2820 }
2821
2822 conn->state = BT_CLOSED;
2823
2824 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2825
2826 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
2827 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
2828 else
2829 reason = hci_to_mgmt_reason(ev->reason);
2830
2831 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2832 reason, mgmt_connected);
2833
2834 if (conn->type == ACL_LINK) {
2835 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2836 hci_remove_link_key(hdev, &conn->dst);
2837
2838 hci_req_update_scan(hdev);
2839 }
2840
2841 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2842 if (params) {
2843 switch (params->auto_connect) {
2844 case HCI_AUTO_CONN_LINK_LOSS:
2845 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2846 break;
2847 fallthrough;
2848
2849 case HCI_AUTO_CONN_DIRECT:
2850 case HCI_AUTO_CONN_ALWAYS:
2851 list_del_init(¶ms->action);
2852 list_add(¶ms->action, &hdev->pend_le_conns);
2853 hci_update_background_scan(hdev);
2854 break;
2855
2856 default:
2857 break;
2858 }
2859 }
2860
2861 type = conn->type;
2862
2863 hci_disconn_cfm(conn, ev->reason);
2864 hci_conn_del(conn);
2865
2866 /* The suspend notifier is waiting for all devices to disconnect so
2867 * clear the bit from pending tasks and inform the wait queue.
2868 */
2869 if (list_empty(&hdev->conn_hash.list) &&
2870 test_and_clear_bit(SUSPEND_DISCONNECTING, hdev->suspend_tasks)) {
2871 wake_up(&hdev->suspend_wait_q);
2872 }
2873
2874 /* Re-enable advertising if necessary, since it might
2875 * have been disabled by the connection. From the
2876 * HCI_LE_Set_Advertise_Enable command description in
2877 * the core specification (v4.0):
2878 * "The Controller shall continue advertising until the Host
2879 * issues an LE_Set_Advertise_Enable command with
2880 * Advertising_Enable set to 0x00 (Advertising is disabled)
2881 * or until a connection is created or until the Advertising
2882 * is timed out due to Directed Advertising."
2883 */
2884 if (type == LE_LINK)
2885 hci_req_reenable_advertising(hdev);
2886
2887unlock:
2888 hci_dev_unlock(hdev);
2889}
2890
2891static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2892{
2893 struct hci_ev_auth_complete *ev = (void *) skb->data;
2894 struct hci_conn *conn;
2895
2896 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2897
2898 hci_dev_lock(hdev);
2899
2900 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2901 if (!conn)
2902 goto unlock;
2903
2904 if (!ev->status) {
2905 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2906
2907 if (!hci_conn_ssp_enabled(conn) &&
2908 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2909 bt_dev_info(hdev, "re-auth of legacy device is not possible.");
2910 } else {
2911 set_bit(HCI_CONN_AUTH, &conn->flags);
2912 conn->sec_level = conn->pending_sec_level;
2913 }
2914 } else {
2915 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2916 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2917
2918 mgmt_auth_failed(conn, ev->status);
2919 }
2920
2921 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2922 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2923
2924 if (conn->state == BT_CONFIG) {
2925 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2926 struct hci_cp_set_conn_encrypt cp;
2927 cp.handle = ev->handle;
2928 cp.encrypt = 0x01;
2929 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2930 &cp);
2931 } else {
2932 conn->state = BT_CONNECTED;
2933 hci_connect_cfm(conn, ev->status);
2934 hci_conn_drop(conn);
2935 }
2936 } else {
2937 hci_auth_cfm(conn, ev->status);
2938
2939 hci_conn_hold(conn);
2940 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2941 hci_conn_drop(conn);
2942 }
2943
2944 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2945 if (!ev->status) {
2946 struct hci_cp_set_conn_encrypt cp;
2947 cp.handle = ev->handle;
2948 cp.encrypt = 0x01;
2949 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2950 &cp);
2951 } else {
2952 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2953 hci_encrypt_cfm(conn, ev->status);
2954 }
2955 }
2956
2957unlock:
2958 hci_dev_unlock(hdev);
2959}
2960
2961static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2962{
2963 struct hci_ev_remote_name *ev = (void *) skb->data;
2964 struct hci_conn *conn;
2965
2966 BT_DBG("%s", hdev->name);
2967
2968 hci_conn_check_pending(hdev);
2969
2970 hci_dev_lock(hdev);
2971
2972 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2973
2974 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2975 goto check_auth;
2976
2977 if (ev->status == 0)
2978 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2979 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2980 else
2981 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2982
2983check_auth:
2984 if (!conn)
2985 goto unlock;
2986
2987 if (!hci_outgoing_auth_needed(hdev, conn))
2988 goto unlock;
2989
2990 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2991 struct hci_cp_auth_requested cp;
2992
2993 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2994
2995 cp.handle = __cpu_to_le16(conn->handle);
2996 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2997 }
2998
2999unlock:
3000 hci_dev_unlock(hdev);
3001}
3002
3003static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
3004 u16 opcode, struct sk_buff *skb)
3005{
3006 const struct hci_rp_read_enc_key_size *rp;
3007 struct hci_conn *conn;
3008 u16 handle;
3009
3010 BT_DBG("%s status 0x%02x", hdev->name, status);
3011
3012 if (!skb || skb->len < sizeof(*rp)) {
3013 bt_dev_err(hdev, "invalid read key size response");
3014 return;
3015 }
3016
3017 rp = (void *)skb->data;
3018 handle = le16_to_cpu(rp->handle);
3019
3020 hci_dev_lock(hdev);
3021
3022 conn = hci_conn_hash_lookup_handle(hdev, handle);
3023 if (!conn)
3024 goto unlock;
3025
3026 /* While unexpected, the read_enc_key_size command may fail. The most
3027 * secure approach is to then assume the key size is 0 to force a
3028 * disconnection.
3029 */
3030 if (rp->status) {
3031 bt_dev_err(hdev, "failed to read key size for handle %u",
3032 handle);
3033 conn->enc_key_size = 0;
3034 } else {
3035 conn->enc_key_size = rp->key_size;
3036 }
3037
3038 hci_encrypt_cfm(conn, 0);
3039
3040unlock:
3041 hci_dev_unlock(hdev);
3042}
3043
3044static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3045{
3046 struct hci_ev_encrypt_change *ev = (void *) skb->data;
3047 struct hci_conn *conn;
3048
3049 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3050
3051 hci_dev_lock(hdev);
3052
3053 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3054 if (!conn)
3055 goto unlock;
3056
3057 if (!ev->status) {
3058 if (ev->encrypt) {
3059 /* Encryption implies authentication */
3060 set_bit(HCI_CONN_AUTH, &conn->flags);
3061 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3062 conn->sec_level = conn->pending_sec_level;
3063
3064 /* P-256 authentication key implies FIPS */
3065 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3066 set_bit(HCI_CONN_FIPS, &conn->flags);
3067
3068 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3069 conn->type == LE_LINK)
3070 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3071 } else {
3072 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3073 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3074 }
3075 }
3076
3077 /* We should disregard the current RPA and generate a new one
3078 * whenever the encryption procedure fails.
3079 */
3080 if (ev->status && conn->type == LE_LINK) {
3081 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3082 hci_adv_instances_set_rpa_expired(hdev, true);
3083 }
3084
3085 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3086
3087 /* Check link security requirements are met */
3088 if (!hci_conn_check_link_mode(conn))
3089 ev->status = HCI_ERROR_AUTH_FAILURE;
3090
3091 if (ev->status && conn->state == BT_CONNECTED) {
3092 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3093 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3094
3095 /* Notify upper layers so they can cleanup before
3096 * disconnecting.
3097 */
3098 hci_encrypt_cfm(conn, ev->status);
3099 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3100 hci_conn_drop(conn);
3101 goto unlock;
3102 }
3103
3104 /* Try reading the encryption key size for encrypted ACL links */
3105 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3106 struct hci_cp_read_enc_key_size cp;
3107 struct hci_request req;
3108
3109 /* Only send HCI_Read_Encryption_Key_Size if the
3110 * controller really supports it. If it doesn't, assume
3111 * the default size (16).
3112 */
3113 if (!(hdev->commands[20] & 0x10)) {
3114 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3115 goto notify;
3116 }
3117
3118 hci_req_init(&req, hdev);
3119
3120 cp.handle = cpu_to_le16(conn->handle);
3121 hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp);
3122
3123 if (hci_req_run_skb(&req, read_enc_key_size_complete)) {
3124 bt_dev_err(hdev, "sending read key size failed");
3125 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3126 goto notify;
3127 }
3128
3129 goto unlock;
3130 }
3131
3132 /* Set the default Authenticated Payload Timeout after
3133 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3134 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3135 * sent when the link is active and Encryption is enabled, the conn
3136 * type can be either LE or ACL and controller must support LMP Ping.
3137 * Ensure for AES-CCM encryption as well.
3138 */
3139 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3140 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3141 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3142 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3143 struct hci_cp_write_auth_payload_to cp;
3144
3145 cp.handle = cpu_to_le16(conn->handle);
3146 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3147 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3148 sizeof(cp), &cp);
3149 }
3150
3151notify:
3152 hci_encrypt_cfm(conn, ev->status);
3153
3154unlock:
3155 hci_dev_unlock(hdev);
3156}
3157
3158static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
3159 struct sk_buff *skb)
3160{
3161 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
3162 struct hci_conn *conn;
3163
3164 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3165
3166 hci_dev_lock(hdev);
3167
3168 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3169 if (conn) {
3170 if (!ev->status)
3171 set_bit(HCI_CONN_SECURE, &conn->flags);
3172
3173 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3174
3175 hci_key_change_cfm(conn, ev->status);
3176 }
3177
3178 hci_dev_unlock(hdev);
3179}
3180
3181static void hci_remote_features_evt(struct hci_dev *hdev,
3182 struct sk_buff *skb)
3183{
3184 struct hci_ev_remote_features *ev = (void *) skb->data;
3185 struct hci_conn *conn;
3186
3187 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3188
3189 hci_dev_lock(hdev);
3190
3191 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3192 if (!conn)
3193 goto unlock;
3194
3195 if (!ev->status)
3196 memcpy(conn->features[0], ev->features, 8);
3197
3198 if (conn->state != BT_CONFIG)
3199 goto unlock;
3200
3201 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3202 lmp_ext_feat_capable(conn)) {
3203 struct hci_cp_read_remote_ext_features cp;
3204 cp.handle = ev->handle;
3205 cp.page = 0x01;
3206 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3207 sizeof(cp), &cp);
3208 goto unlock;
3209 }
3210
3211 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3212 struct hci_cp_remote_name_req cp;
3213 memset(&cp, 0, sizeof(cp));
3214 bacpy(&cp.bdaddr, &conn->dst);
3215 cp.pscan_rep_mode = 0x02;
3216 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3217 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3218 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3219
3220 if (!hci_outgoing_auth_needed(hdev, conn)) {
3221 conn->state = BT_CONNECTED;
3222 hci_connect_cfm(conn, ev->status);
3223 hci_conn_drop(conn);
3224 }
3225
3226unlock:
3227 hci_dev_unlock(hdev);
3228}
3229
3230static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
3231 u16 *opcode, u8 *status,
3232 hci_req_complete_t *req_complete,
3233 hci_req_complete_skb_t *req_complete_skb)
3234{
3235 struct hci_ev_cmd_complete *ev = (void *) skb->data;
3236
3237 *opcode = __le16_to_cpu(ev->opcode);
3238 *status = skb->data[sizeof(*ev)];
3239
3240 skb_pull(skb, sizeof(*ev));
3241
3242 switch (*opcode) {
3243 case HCI_OP_INQUIRY_CANCEL:
3244 hci_cc_inquiry_cancel(hdev, skb, status);
3245 break;
3246
3247 case HCI_OP_PERIODIC_INQ:
3248 hci_cc_periodic_inq(hdev, skb);
3249 break;
3250
3251 case HCI_OP_EXIT_PERIODIC_INQ:
3252 hci_cc_exit_periodic_inq(hdev, skb);
3253 break;
3254
3255 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
3256 hci_cc_remote_name_req_cancel(hdev, skb);
3257 break;
3258
3259 case HCI_OP_ROLE_DISCOVERY:
3260 hci_cc_role_discovery(hdev, skb);
3261 break;
3262
3263 case HCI_OP_READ_LINK_POLICY:
3264 hci_cc_read_link_policy(hdev, skb);
3265 break;
3266
3267 case HCI_OP_WRITE_LINK_POLICY:
3268 hci_cc_write_link_policy(hdev, skb);
3269 break;
3270
3271 case HCI_OP_READ_DEF_LINK_POLICY:
3272 hci_cc_read_def_link_policy(hdev, skb);
3273 break;
3274
3275 case HCI_OP_WRITE_DEF_LINK_POLICY:
3276 hci_cc_write_def_link_policy(hdev, skb);
3277 break;
3278
3279 case HCI_OP_RESET:
3280 hci_cc_reset(hdev, skb);
3281 break;
3282
3283 case HCI_OP_READ_STORED_LINK_KEY:
3284 hci_cc_read_stored_link_key(hdev, skb);
3285 break;
3286
3287 case HCI_OP_DELETE_STORED_LINK_KEY:
3288 hci_cc_delete_stored_link_key(hdev, skb);
3289 break;
3290
3291 case HCI_OP_WRITE_LOCAL_NAME:
3292 hci_cc_write_local_name(hdev, skb);
3293 break;
3294
3295 case HCI_OP_READ_LOCAL_NAME:
3296 hci_cc_read_local_name(hdev, skb);
3297 break;
3298
3299 case HCI_OP_WRITE_AUTH_ENABLE:
3300 hci_cc_write_auth_enable(hdev, skb);
3301 break;
3302
3303 case HCI_OP_WRITE_ENCRYPT_MODE:
3304 hci_cc_write_encrypt_mode(hdev, skb);
3305 break;
3306
3307 case HCI_OP_WRITE_SCAN_ENABLE:
3308 hci_cc_write_scan_enable(hdev, skb);
3309 break;
3310
3311 case HCI_OP_READ_CLASS_OF_DEV:
3312 hci_cc_read_class_of_dev(hdev, skb);
3313 break;
3314
3315 case HCI_OP_WRITE_CLASS_OF_DEV:
3316 hci_cc_write_class_of_dev(hdev, skb);
3317 break;
3318
3319 case HCI_OP_READ_VOICE_SETTING:
3320 hci_cc_read_voice_setting(hdev, skb);
3321 break;
3322
3323 case HCI_OP_WRITE_VOICE_SETTING:
3324 hci_cc_write_voice_setting(hdev, skb);
3325 break;
3326
3327 case HCI_OP_READ_NUM_SUPPORTED_IAC:
3328 hci_cc_read_num_supported_iac(hdev, skb);
3329 break;
3330
3331 case HCI_OP_WRITE_SSP_MODE:
3332 hci_cc_write_ssp_mode(hdev, skb);
3333 break;
3334
3335 case HCI_OP_WRITE_SC_SUPPORT:
3336 hci_cc_write_sc_support(hdev, skb);
3337 break;
3338
3339 case HCI_OP_READ_AUTH_PAYLOAD_TO:
3340 hci_cc_read_auth_payload_timeout(hdev, skb);
3341 break;
3342
3343 case HCI_OP_WRITE_AUTH_PAYLOAD_TO:
3344 hci_cc_write_auth_payload_timeout(hdev, skb);
3345 break;
3346
3347 case HCI_OP_READ_LOCAL_VERSION:
3348 hci_cc_read_local_version(hdev, skb);
3349 break;
3350
3351 case HCI_OP_READ_LOCAL_COMMANDS:
3352 hci_cc_read_local_commands(hdev, skb);
3353 break;
3354
3355 case HCI_OP_READ_LOCAL_FEATURES:
3356 hci_cc_read_local_features(hdev, skb);
3357 break;
3358
3359 case HCI_OP_READ_LOCAL_EXT_FEATURES:
3360 hci_cc_read_local_ext_features(hdev, skb);
3361 break;
3362
3363 case HCI_OP_READ_BUFFER_SIZE:
3364 hci_cc_read_buffer_size(hdev, skb);
3365 break;
3366
3367 case HCI_OP_READ_BD_ADDR:
3368 hci_cc_read_bd_addr(hdev, skb);
3369 break;
3370
3371 case HCI_OP_READ_LOCAL_PAIRING_OPTS:
3372 hci_cc_read_local_pairing_opts(hdev, skb);
3373 break;
3374
3375 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
3376 hci_cc_read_page_scan_activity(hdev, skb);
3377 break;
3378
3379 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
3380 hci_cc_write_page_scan_activity(hdev, skb);
3381 break;
3382
3383 case HCI_OP_READ_PAGE_SCAN_TYPE:
3384 hci_cc_read_page_scan_type(hdev, skb);
3385 break;
3386
3387 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
3388 hci_cc_write_page_scan_type(hdev, skb);
3389 break;
3390
3391 case HCI_OP_READ_DATA_BLOCK_SIZE:
3392 hci_cc_read_data_block_size(hdev, skb);
3393 break;
3394
3395 case HCI_OP_READ_FLOW_CONTROL_MODE:
3396 hci_cc_read_flow_control_mode(hdev, skb);
3397 break;
3398
3399 case HCI_OP_READ_LOCAL_AMP_INFO:
3400 hci_cc_read_local_amp_info(hdev, skb);
3401 break;
3402
3403 case HCI_OP_READ_CLOCK:
3404 hci_cc_read_clock(hdev, skb);
3405 break;
3406
3407 case HCI_OP_READ_INQ_RSP_TX_POWER:
3408 hci_cc_read_inq_rsp_tx_power(hdev, skb);
3409 break;
3410
3411 case HCI_OP_READ_DEF_ERR_DATA_REPORTING:
3412 hci_cc_read_def_err_data_reporting(hdev, skb);
3413 break;
3414
3415 case HCI_OP_WRITE_DEF_ERR_DATA_REPORTING:
3416 hci_cc_write_def_err_data_reporting(hdev, skb);
3417 break;
3418
3419 case HCI_OP_PIN_CODE_REPLY:
3420 hci_cc_pin_code_reply(hdev, skb);
3421 break;
3422
3423 case HCI_OP_PIN_CODE_NEG_REPLY:
3424 hci_cc_pin_code_neg_reply(hdev, skb);
3425 break;
3426
3427 case HCI_OP_READ_LOCAL_OOB_DATA:
3428 hci_cc_read_local_oob_data(hdev, skb);
3429 break;
3430
3431 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
3432 hci_cc_read_local_oob_ext_data(hdev, skb);
3433 break;
3434
3435 case HCI_OP_LE_READ_BUFFER_SIZE:
3436 hci_cc_le_read_buffer_size(hdev, skb);
3437 break;
3438
3439 case HCI_OP_LE_READ_LOCAL_FEATURES:
3440 hci_cc_le_read_local_features(hdev, skb);
3441 break;
3442
3443 case HCI_OP_LE_READ_ADV_TX_POWER:
3444 hci_cc_le_read_adv_tx_power(hdev, skb);
3445 break;
3446
3447 case HCI_OP_USER_CONFIRM_REPLY:
3448 hci_cc_user_confirm_reply(hdev, skb);
3449 break;
3450
3451 case HCI_OP_USER_CONFIRM_NEG_REPLY:
3452 hci_cc_user_confirm_neg_reply(hdev, skb);
3453 break;
3454
3455 case HCI_OP_USER_PASSKEY_REPLY:
3456 hci_cc_user_passkey_reply(hdev, skb);
3457 break;
3458
3459 case HCI_OP_USER_PASSKEY_NEG_REPLY:
3460 hci_cc_user_passkey_neg_reply(hdev, skb);
3461 break;
3462
3463 case HCI_OP_LE_SET_RANDOM_ADDR:
3464 hci_cc_le_set_random_addr(hdev, skb);
3465 break;
3466
3467 case HCI_OP_LE_SET_ADV_ENABLE:
3468 hci_cc_le_set_adv_enable(hdev, skb);
3469 break;
3470
3471 case HCI_OP_LE_SET_SCAN_PARAM:
3472 hci_cc_le_set_scan_param(hdev, skb);
3473 break;
3474
3475 case HCI_OP_LE_SET_SCAN_ENABLE:
3476 hci_cc_le_set_scan_enable(hdev, skb);
3477 break;
3478
3479 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
3480 hci_cc_le_read_white_list_size(hdev, skb);
3481 break;
3482
3483 case HCI_OP_LE_CLEAR_WHITE_LIST:
3484 hci_cc_le_clear_white_list(hdev, skb);
3485 break;
3486
3487 case HCI_OP_LE_ADD_TO_WHITE_LIST:
3488 hci_cc_le_add_to_white_list(hdev, skb);
3489 break;
3490
3491 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
3492 hci_cc_le_del_from_white_list(hdev, skb);
3493 break;
3494
3495 case HCI_OP_LE_READ_SUPPORTED_STATES:
3496 hci_cc_le_read_supported_states(hdev, skb);
3497 break;
3498
3499 case HCI_OP_LE_READ_DEF_DATA_LEN:
3500 hci_cc_le_read_def_data_len(hdev, skb);
3501 break;
3502
3503 case HCI_OP_LE_WRITE_DEF_DATA_LEN:
3504 hci_cc_le_write_def_data_len(hdev, skb);
3505 break;
3506
3507 case HCI_OP_LE_ADD_TO_RESOLV_LIST:
3508 hci_cc_le_add_to_resolv_list(hdev, skb);
3509 break;
3510
3511 case HCI_OP_LE_DEL_FROM_RESOLV_LIST:
3512 hci_cc_le_del_from_resolv_list(hdev, skb);
3513 break;
3514
3515 case HCI_OP_LE_CLEAR_RESOLV_LIST:
3516 hci_cc_le_clear_resolv_list(hdev, skb);
3517 break;
3518
3519 case HCI_OP_LE_READ_RESOLV_LIST_SIZE:
3520 hci_cc_le_read_resolv_list_size(hdev, skb);
3521 break;
3522
3523 case HCI_OP_LE_SET_ADDR_RESOLV_ENABLE:
3524 hci_cc_le_set_addr_resolution_enable(hdev, skb);
3525 break;
3526
3527 case HCI_OP_LE_READ_MAX_DATA_LEN:
3528 hci_cc_le_read_max_data_len(hdev, skb);
3529 break;
3530
3531 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
3532 hci_cc_write_le_host_supported(hdev, skb);
3533 break;
3534
3535 case HCI_OP_LE_SET_ADV_PARAM:
3536 hci_cc_set_adv_param(hdev, skb);
3537 break;
3538
3539 case HCI_OP_READ_RSSI:
3540 hci_cc_read_rssi(hdev, skb);
3541 break;
3542
3543 case HCI_OP_READ_TX_POWER:
3544 hci_cc_read_tx_power(hdev, skb);
3545 break;
3546
3547 case HCI_OP_WRITE_SSP_DEBUG_MODE:
3548 hci_cc_write_ssp_debug_mode(hdev, skb);
3549 break;
3550
3551 case HCI_OP_LE_SET_EXT_SCAN_PARAMS:
3552 hci_cc_le_set_ext_scan_param(hdev, skb);
3553 break;
3554
3555 case HCI_OP_LE_SET_EXT_SCAN_ENABLE:
3556 hci_cc_le_set_ext_scan_enable(hdev, skb);
3557 break;
3558
3559 case HCI_OP_LE_SET_DEFAULT_PHY:
3560 hci_cc_le_set_default_phy(hdev, skb);
3561 break;
3562
3563 case HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS:
3564 hci_cc_le_read_num_adv_sets(hdev, skb);
3565 break;
3566
3567 case HCI_OP_LE_SET_EXT_ADV_PARAMS:
3568 hci_cc_set_ext_adv_param(hdev, skb);
3569 break;
3570
3571 case HCI_OP_LE_SET_EXT_ADV_ENABLE:
3572 hci_cc_le_set_ext_adv_enable(hdev, skb);
3573 break;
3574
3575 case HCI_OP_LE_SET_ADV_SET_RAND_ADDR:
3576 hci_cc_le_set_adv_set_random_addr(hdev, skb);
3577 break;
3578
3579 default:
3580 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3581 break;
3582 }
3583
3584 if (*opcode != HCI_OP_NOP)
3585 cancel_delayed_work(&hdev->cmd_timer);
3586
3587 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3588 atomic_set(&hdev->cmd_cnt, 1);
3589
3590 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
3591 req_complete_skb);
3592
3593 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
3594 bt_dev_err(hdev,
3595 "unexpected event for opcode 0x%4.4x", *opcode);
3596 return;
3597 }
3598
3599 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3600 queue_work(hdev->workqueue, &hdev->cmd_work);
3601}
3602
3603static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
3604 u16 *opcode, u8 *status,
3605 hci_req_complete_t *req_complete,
3606 hci_req_complete_skb_t *req_complete_skb)
3607{
3608 struct hci_ev_cmd_status *ev = (void *) skb->data;
3609
3610 skb_pull(skb, sizeof(*ev));
3611
3612 *opcode = __le16_to_cpu(ev->opcode);
3613 *status = ev->status;
3614
3615 switch (*opcode) {
3616 case HCI_OP_INQUIRY:
3617 hci_cs_inquiry(hdev, ev->status);
3618 break;
3619
3620 case HCI_OP_CREATE_CONN:
3621 hci_cs_create_conn(hdev, ev->status);
3622 break;
3623
3624 case HCI_OP_DISCONNECT:
3625 hci_cs_disconnect(hdev, ev->status);
3626 break;
3627
3628 case HCI_OP_ADD_SCO:
3629 hci_cs_add_sco(hdev, ev->status);
3630 break;
3631
3632 case HCI_OP_AUTH_REQUESTED:
3633 hci_cs_auth_requested(hdev, ev->status);
3634 break;
3635
3636 case HCI_OP_SET_CONN_ENCRYPT:
3637 hci_cs_set_conn_encrypt(hdev, ev->status);
3638 break;
3639
3640 case HCI_OP_REMOTE_NAME_REQ:
3641 hci_cs_remote_name_req(hdev, ev->status);
3642 break;
3643
3644 case HCI_OP_READ_REMOTE_FEATURES:
3645 hci_cs_read_remote_features(hdev, ev->status);
3646 break;
3647
3648 case HCI_OP_READ_REMOTE_EXT_FEATURES:
3649 hci_cs_read_remote_ext_features(hdev, ev->status);
3650 break;
3651
3652 case HCI_OP_SETUP_SYNC_CONN:
3653 hci_cs_setup_sync_conn(hdev, ev->status);
3654 break;
3655
3656 case HCI_OP_SNIFF_MODE:
3657 hci_cs_sniff_mode(hdev, ev->status);
3658 break;
3659
3660 case HCI_OP_EXIT_SNIFF_MODE:
3661 hci_cs_exit_sniff_mode(hdev, ev->status);
3662 break;
3663
3664 case HCI_OP_SWITCH_ROLE:
3665 hci_cs_switch_role(hdev, ev->status);
3666 break;
3667
3668 case HCI_OP_LE_CREATE_CONN:
3669 hci_cs_le_create_conn(hdev, ev->status);
3670 break;
3671
3672 case HCI_OP_LE_READ_REMOTE_FEATURES:
3673 hci_cs_le_read_remote_features(hdev, ev->status);
3674 break;
3675
3676 case HCI_OP_LE_START_ENC:
3677 hci_cs_le_start_enc(hdev, ev->status);
3678 break;
3679
3680 case HCI_OP_LE_EXT_CREATE_CONN:
3681 hci_cs_le_ext_create_conn(hdev, ev->status);
3682 break;
3683
3684 default:
3685 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3686 break;
3687 }
3688
3689 if (*opcode != HCI_OP_NOP)
3690 cancel_delayed_work(&hdev->cmd_timer);
3691
3692 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3693 atomic_set(&hdev->cmd_cnt, 1);
3694
3695 /* Indicate request completion if the command failed. Also, if
3696 * we're not waiting for a special event and we get a success
3697 * command status we should try to flag the request as completed
3698 * (since for this kind of commands there will not be a command
3699 * complete event).
3700 */
3701 if (ev->status ||
3702 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event))
3703 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
3704 req_complete_skb);
3705
3706 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
3707 bt_dev_err(hdev,
3708 "unexpected event for opcode 0x%4.4x", *opcode);
3709 return;
3710 }
3711
3712 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3713 queue_work(hdev->workqueue, &hdev->cmd_work);
3714}
3715
3716static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
3717{
3718 struct hci_ev_hardware_error *ev = (void *) skb->data;
3719
3720 hdev->hw_error_code = ev->code;
3721
3722 queue_work(hdev->req_workqueue, &hdev->error_reset);
3723}
3724
3725static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3726{
3727 struct hci_ev_role_change *ev = (void *) skb->data;
3728 struct hci_conn *conn;
3729
3730 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3731
3732 hci_dev_lock(hdev);
3733
3734 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3735 if (conn) {
3736 if (!ev->status)
3737 conn->role = ev->role;
3738
3739 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3740
3741 hci_role_switch_cfm(conn, ev->status, ev->role);
3742 }
3743
3744 hci_dev_unlock(hdev);
3745}
3746
3747static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3748{
3749 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
3750 int i;
3751
3752 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
3753 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3754 return;
3755 }
3756
3757 if (skb->len < sizeof(*ev) ||
3758 skb->len < struct_size(ev, handles, ev->num_hndl)) {
3759 BT_DBG("%s bad parameters", hdev->name);
3760 return;
3761 }
3762
3763 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
3764
3765 for (i = 0; i < ev->num_hndl; i++) {
3766 struct hci_comp_pkts_info *info = &ev->handles[i];
3767 struct hci_conn *conn;
3768 __u16 handle, count;
3769
3770 handle = __le16_to_cpu(info->handle);
3771 count = __le16_to_cpu(info->count);
3772
3773 conn = hci_conn_hash_lookup_handle(hdev, handle);
3774 if (!conn)
3775 continue;
3776
3777 conn->sent -= count;
3778
3779 switch (conn->type) {
3780 case ACL_LINK:
3781 hdev->acl_cnt += count;
3782 if (hdev->acl_cnt > hdev->acl_pkts)
3783 hdev->acl_cnt = hdev->acl_pkts;
3784 break;
3785
3786 case LE_LINK:
3787 if (hdev->le_pkts) {
3788 hdev->le_cnt += count;
3789 if (hdev->le_cnt > hdev->le_pkts)
3790 hdev->le_cnt = hdev->le_pkts;
3791 } else {
3792 hdev->acl_cnt += count;
3793 if (hdev->acl_cnt > hdev->acl_pkts)
3794 hdev->acl_cnt = hdev->acl_pkts;
3795 }
3796 break;
3797
3798 case SCO_LINK:
3799 hdev->sco_cnt += count;
3800 if (hdev->sco_cnt > hdev->sco_pkts)
3801 hdev->sco_cnt = hdev->sco_pkts;
3802 break;
3803
3804 default:
3805 bt_dev_err(hdev, "unknown type %d conn %p",
3806 conn->type, conn);
3807 break;
3808 }
3809 }
3810
3811 queue_work(hdev->workqueue, &hdev->tx_work);
3812}
3813
3814static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3815 __u16 handle)
3816{
3817 struct hci_chan *chan;
3818
3819 switch (hdev->dev_type) {
3820 case HCI_PRIMARY:
3821 return hci_conn_hash_lookup_handle(hdev, handle);
3822 case HCI_AMP:
3823 chan = hci_chan_lookup_handle(hdev, handle);
3824 if (chan)
3825 return chan->conn;
3826 break;
3827 default:
3828 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
3829 break;
3830 }
3831
3832 return NULL;
3833}
3834
3835static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3836{
3837 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3838 int i;
3839
3840 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3841 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3842 return;
3843 }
3844
3845 if (skb->len < sizeof(*ev) ||
3846 skb->len < struct_size(ev, handles, ev->num_hndl)) {
3847 BT_DBG("%s bad parameters", hdev->name);
3848 return;
3849 }
3850
3851 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3852 ev->num_hndl);
3853
3854 for (i = 0; i < ev->num_hndl; i++) {
3855 struct hci_comp_blocks_info *info = &ev->handles[i];
3856 struct hci_conn *conn = NULL;
3857 __u16 handle, block_count;
3858
3859 handle = __le16_to_cpu(info->handle);
3860 block_count = __le16_to_cpu(info->blocks);
3861
3862 conn = __hci_conn_lookup_handle(hdev, handle);
3863 if (!conn)
3864 continue;
3865
3866 conn->sent -= block_count;
3867
3868 switch (conn->type) {
3869 case ACL_LINK:
3870 case AMP_LINK:
3871 hdev->block_cnt += block_count;
3872 if (hdev->block_cnt > hdev->num_blocks)
3873 hdev->block_cnt = hdev->num_blocks;
3874 break;
3875
3876 default:
3877 bt_dev_err(hdev, "unknown type %d conn %p",
3878 conn->type, conn);
3879 break;
3880 }
3881 }
3882
3883 queue_work(hdev->workqueue, &hdev->tx_work);
3884}
3885
3886static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3887{
3888 struct hci_ev_mode_change *ev = (void *) skb->data;
3889 struct hci_conn *conn;
3890
3891 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3892
3893 hci_dev_lock(hdev);
3894
3895 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3896 if (conn) {
3897 conn->mode = ev->mode;
3898
3899 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3900 &conn->flags)) {
3901 if (conn->mode == HCI_CM_ACTIVE)
3902 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3903 else
3904 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3905 }
3906
3907 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3908 hci_sco_setup(conn, ev->status);
3909 }
3910
3911 hci_dev_unlock(hdev);
3912}
3913
3914static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3915{
3916 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3917 struct hci_conn *conn;
3918
3919 BT_DBG("%s", hdev->name);
3920
3921 hci_dev_lock(hdev);
3922
3923 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3924 if (!conn)
3925 goto unlock;
3926
3927 if (conn->state == BT_CONNECTED) {
3928 hci_conn_hold(conn);
3929 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3930 hci_conn_drop(conn);
3931 }
3932
3933 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3934 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3935 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3936 sizeof(ev->bdaddr), &ev->bdaddr);
3937 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3938 u8 secure;
3939
3940 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3941 secure = 1;
3942 else
3943 secure = 0;
3944
3945 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3946 }
3947
3948unlock:
3949 hci_dev_unlock(hdev);
3950}
3951
3952static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3953{
3954 if (key_type == HCI_LK_CHANGED_COMBINATION)
3955 return;
3956
3957 conn->pin_length = pin_len;
3958 conn->key_type = key_type;
3959
3960 switch (key_type) {
3961 case HCI_LK_LOCAL_UNIT:
3962 case HCI_LK_REMOTE_UNIT:
3963 case HCI_LK_DEBUG_COMBINATION:
3964 return;
3965 case HCI_LK_COMBINATION:
3966 if (pin_len == 16)
3967 conn->pending_sec_level = BT_SECURITY_HIGH;
3968 else
3969 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3970 break;
3971 case HCI_LK_UNAUTH_COMBINATION_P192:
3972 case HCI_LK_UNAUTH_COMBINATION_P256:
3973 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3974 break;
3975 case HCI_LK_AUTH_COMBINATION_P192:
3976 conn->pending_sec_level = BT_SECURITY_HIGH;
3977 break;
3978 case HCI_LK_AUTH_COMBINATION_P256:
3979 conn->pending_sec_level = BT_SECURITY_FIPS;
3980 break;
3981 }
3982}
3983
3984static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3985{
3986 struct hci_ev_link_key_req *ev = (void *) skb->data;
3987 struct hci_cp_link_key_reply cp;
3988 struct hci_conn *conn;
3989 struct link_key *key;
3990
3991 BT_DBG("%s", hdev->name);
3992
3993 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3994 return;
3995
3996 hci_dev_lock(hdev);
3997
3998 key = hci_find_link_key(hdev, &ev->bdaddr);
3999 if (!key) {
4000 BT_DBG("%s link key not found for %pMR", hdev->name,
4001 &ev->bdaddr);
4002 goto not_found;
4003 }
4004
4005 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
4006 &ev->bdaddr);
4007
4008 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4009 if (conn) {
4010 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4011
4012 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4013 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4014 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4015 BT_DBG("%s ignoring unauthenticated key", hdev->name);
4016 goto not_found;
4017 }
4018
4019 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4020 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4021 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4022 BT_DBG("%s ignoring key unauthenticated for high security",
4023 hdev->name);
4024 goto not_found;
4025 }
4026
4027 conn_set_key(conn, key->type, key->pin_len);
4028 }
4029
4030 bacpy(&cp.bdaddr, &ev->bdaddr);
4031 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4032
4033 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4034
4035 hci_dev_unlock(hdev);
4036
4037 return;
4038
4039not_found:
4040 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4041 hci_dev_unlock(hdev);
4042}
4043
4044static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4045{
4046 struct hci_ev_link_key_notify *ev = (void *) skb->data;
4047 struct hci_conn *conn;
4048 struct link_key *key;
4049 bool persistent;
4050 u8 pin_len = 0;
4051
4052 BT_DBG("%s", hdev->name);
4053
4054 hci_dev_lock(hdev);
4055
4056 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4057 if (!conn)
4058 goto unlock;
4059
4060 hci_conn_hold(conn);
4061 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4062 hci_conn_drop(conn);
4063
4064 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4065 conn_set_key(conn, ev->key_type, conn->pin_length);
4066
4067 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4068 goto unlock;
4069
4070 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4071 ev->key_type, pin_len, &persistent);
4072 if (!key)
4073 goto unlock;
4074
4075 /* Update connection information since adding the key will have
4076 * fixed up the type in the case of changed combination keys.
4077 */
4078 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4079 conn_set_key(conn, key->type, key->pin_len);
4080
4081 mgmt_new_link_key(hdev, key, persistent);
4082
4083 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4084 * is set. If it's not set simply remove the key from the kernel
4085 * list (we've still notified user space about it but with
4086 * store_hint being 0).
4087 */
4088 if (key->type == HCI_LK_DEBUG_COMBINATION &&
4089 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4090 list_del_rcu(&key->list);
4091 kfree_rcu(key, rcu);
4092 goto unlock;
4093 }
4094
4095 if (persistent)
4096 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4097 else
4098 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4099
4100unlock:
4101 hci_dev_unlock(hdev);
4102}
4103
4104static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
4105{
4106 struct hci_ev_clock_offset *ev = (void *) skb->data;
4107 struct hci_conn *conn;
4108
4109 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4110
4111 hci_dev_lock(hdev);
4112
4113 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4114 if (conn && !ev->status) {
4115 struct inquiry_entry *ie;
4116
4117 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4118 if (ie) {
4119 ie->data.clock_offset = ev->clock_offset;
4120 ie->timestamp = jiffies;
4121 }
4122 }
4123
4124 hci_dev_unlock(hdev);
4125}
4126
4127static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
4128{
4129 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
4130 struct hci_conn *conn;
4131
4132 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4133
4134 hci_dev_lock(hdev);
4135
4136 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4137 if (conn && !ev->status)
4138 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4139
4140 hci_dev_unlock(hdev);
4141}
4142
4143static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
4144{
4145 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
4146 struct inquiry_entry *ie;
4147
4148 BT_DBG("%s", hdev->name);
4149
4150 hci_dev_lock(hdev);
4151
4152 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4153 if (ie) {
4154 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4155 ie->timestamp = jiffies;
4156 }
4157
4158 hci_dev_unlock(hdev);
4159}
4160
4161static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
4162 struct sk_buff *skb)
4163{
4164 struct inquiry_data data;
4165 int num_rsp = *((__u8 *) skb->data);
4166
4167 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
4168
4169 if (!num_rsp)
4170 return;
4171
4172 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4173 return;
4174
4175 hci_dev_lock(hdev);
4176
4177 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
4178 struct inquiry_info_with_rssi_and_pscan_mode *info;
4179 info = (void *) (skb->data + 1);
4180
4181 if (skb->len < num_rsp * sizeof(*info) + 1)
4182 goto unlock;
4183
4184 for (; num_rsp; num_rsp--, info++) {
4185 u32 flags;
4186
4187 bacpy(&data.bdaddr, &info->bdaddr);
4188 data.pscan_rep_mode = info->pscan_rep_mode;
4189 data.pscan_period_mode = info->pscan_period_mode;
4190 data.pscan_mode = info->pscan_mode;
4191 memcpy(data.dev_class, info->dev_class, 3);
4192 data.clock_offset = info->clock_offset;
4193 data.rssi = info->rssi;
4194 data.ssp_mode = 0x00;
4195
4196 flags = hci_inquiry_cache_update(hdev, &data, false);
4197
4198 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4199 info->dev_class, info->rssi,
4200 flags, NULL, 0, NULL, 0);
4201 }
4202 } else {
4203 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
4204
4205 if (skb->len < num_rsp * sizeof(*info) + 1)
4206 goto unlock;
4207
4208 for (; num_rsp; num_rsp--, info++) {
4209 u32 flags;
4210
4211 bacpy(&data.bdaddr, &info->bdaddr);
4212 data.pscan_rep_mode = info->pscan_rep_mode;
4213 data.pscan_period_mode = info->pscan_period_mode;
4214 data.pscan_mode = 0x00;
4215 memcpy(data.dev_class, info->dev_class, 3);
4216 data.clock_offset = info->clock_offset;
4217 data.rssi = info->rssi;
4218 data.ssp_mode = 0x00;
4219
4220 flags = hci_inquiry_cache_update(hdev, &data, false);
4221
4222 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4223 info->dev_class, info->rssi,
4224 flags, NULL, 0, NULL, 0);
4225 }
4226 }
4227
4228unlock:
4229 hci_dev_unlock(hdev);
4230}
4231
4232static void hci_remote_ext_features_evt(struct hci_dev *hdev,
4233 struct sk_buff *skb)
4234{
4235 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
4236 struct hci_conn *conn;
4237
4238 BT_DBG("%s", hdev->name);
4239
4240 hci_dev_lock(hdev);
4241
4242 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4243 if (!conn)
4244 goto unlock;
4245
4246 if (ev->page < HCI_MAX_PAGES)
4247 memcpy(conn->features[ev->page], ev->features, 8);
4248
4249 if (!ev->status && ev->page == 0x01) {
4250 struct inquiry_entry *ie;
4251
4252 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4253 if (ie)
4254 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4255
4256 if (ev->features[0] & LMP_HOST_SSP) {
4257 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4258 } else {
4259 /* It is mandatory by the Bluetooth specification that
4260 * Extended Inquiry Results are only used when Secure
4261 * Simple Pairing is enabled, but some devices violate
4262 * this.
4263 *
4264 * To make these devices work, the internal SSP
4265 * enabled flag needs to be cleared if the remote host
4266 * features do not indicate SSP support */
4267 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4268 }
4269
4270 if (ev->features[0] & LMP_HOST_SC)
4271 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4272 }
4273
4274 if (conn->state != BT_CONFIG)
4275 goto unlock;
4276
4277 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4278 struct hci_cp_remote_name_req cp;
4279 memset(&cp, 0, sizeof(cp));
4280 bacpy(&cp.bdaddr, &conn->dst);
4281 cp.pscan_rep_mode = 0x02;
4282 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4283 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4284 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4285
4286 if (!hci_outgoing_auth_needed(hdev, conn)) {
4287 conn->state = BT_CONNECTED;
4288 hci_connect_cfm(conn, ev->status);
4289 hci_conn_drop(conn);
4290 }
4291
4292unlock:
4293 hci_dev_unlock(hdev);
4294}
4295
4296static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
4297 struct sk_buff *skb)
4298{
4299 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
4300 struct hci_conn *conn;
4301
4302 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4303
4304 hci_dev_lock(hdev);
4305
4306 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4307 if (!conn) {
4308 if (ev->link_type == ESCO_LINK)
4309 goto unlock;
4310
4311 /* When the link type in the event indicates SCO connection
4312 * and lookup of the connection object fails, then check
4313 * if an eSCO connection object exists.
4314 *
4315 * The core limits the synchronous connections to either
4316 * SCO or eSCO. The eSCO connection is preferred and tried
4317 * to be setup first and until successfully established,
4318 * the link type will be hinted as eSCO.
4319 */
4320 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4321 if (!conn)
4322 goto unlock;
4323 }
4324
4325 switch (ev->status) {
4326 case 0x00:
4327 conn->handle = __le16_to_cpu(ev->handle);
4328 conn->state = BT_CONNECTED;
4329 conn->type = ev->link_type;
4330
4331 hci_debugfs_create_conn(conn);
4332 hci_conn_add_sysfs(conn);
4333 break;
4334
4335 case 0x10: /* Connection Accept Timeout */
4336 case 0x0d: /* Connection Rejected due to Limited Resources */
4337 case 0x11: /* Unsupported Feature or Parameter Value */
4338 case 0x1c: /* SCO interval rejected */
4339 case 0x1a: /* Unsupported Remote Feature */
4340 case 0x1e: /* Invalid LMP Parameters */
4341 case 0x1f: /* Unspecified error */
4342 case 0x20: /* Unsupported LMP Parameter value */
4343 if (conn->out) {
4344 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
4345 (hdev->esco_type & EDR_ESCO_MASK);
4346 if (hci_setup_sync(conn, conn->link->handle))
4347 goto unlock;
4348 }
4349 fallthrough;
4350
4351 default:
4352 conn->state = BT_CLOSED;
4353 break;
4354 }
4355
4356 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
4357
4358 switch (conn->setting & SCO_AIRMODE_MASK) {
4359 case SCO_AIRMODE_CVSD:
4360 if (hdev->notify)
4361 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
4362 break;
4363 case SCO_AIRMODE_TRANSP:
4364 if (hdev->notify)
4365 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
4366 break;
4367 }
4368
4369 hci_connect_cfm(conn, ev->status);
4370 if (ev->status)
4371 hci_conn_del(conn);
4372
4373unlock:
4374 hci_dev_unlock(hdev);
4375}
4376
4377static inline size_t eir_get_length(u8 *eir, size_t eir_len)
4378{
4379 size_t parsed = 0;
4380
4381 while (parsed < eir_len) {
4382 u8 field_len = eir[0];
4383
4384 if (field_len == 0)
4385 return parsed;
4386
4387 parsed += field_len + 1;
4388 eir += field_len + 1;
4389 }
4390
4391 return eir_len;
4392}
4393
4394static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
4395 struct sk_buff *skb)
4396{
4397 struct inquiry_data data;
4398 struct extended_inquiry_info *info = (void *) (skb->data + 1);
4399 int num_rsp = *((__u8 *) skb->data);
4400 size_t eir_len;
4401
4402 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
4403
4404 if (!num_rsp || skb->len < num_rsp * sizeof(*info) + 1)
4405 return;
4406
4407 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4408 return;
4409
4410 hci_dev_lock(hdev);
4411
4412 for (; num_rsp; num_rsp--, info++) {
4413 u32 flags;
4414 bool name_known;
4415
4416 bacpy(&data.bdaddr, &info->bdaddr);
4417 data.pscan_rep_mode = info->pscan_rep_mode;
4418 data.pscan_period_mode = info->pscan_period_mode;
4419 data.pscan_mode = 0x00;
4420 memcpy(data.dev_class, info->dev_class, 3);
4421 data.clock_offset = info->clock_offset;
4422 data.rssi = info->rssi;
4423 data.ssp_mode = 0x01;
4424
4425 if (hci_dev_test_flag(hdev, HCI_MGMT))
4426 name_known = eir_get_data(info->data,
4427 sizeof(info->data),
4428 EIR_NAME_COMPLETE, NULL);
4429 else
4430 name_known = true;
4431
4432 flags = hci_inquiry_cache_update(hdev, &data, name_known);
4433
4434 eir_len = eir_get_length(info->data, sizeof(info->data));
4435
4436 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4437 info->dev_class, info->rssi,
4438 flags, info->data, eir_len, NULL, 0);
4439 }
4440
4441 hci_dev_unlock(hdev);
4442}
4443
4444static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
4445 struct sk_buff *skb)
4446{
4447 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
4448 struct hci_conn *conn;
4449
4450 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
4451 __le16_to_cpu(ev->handle));
4452
4453 hci_dev_lock(hdev);
4454
4455 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4456 if (!conn)
4457 goto unlock;
4458
4459 /* For BR/EDR the necessary steps are taken through the
4460 * auth_complete event.
4461 */
4462 if (conn->type != LE_LINK)
4463 goto unlock;
4464
4465 if (!ev->status)
4466 conn->sec_level = conn->pending_sec_level;
4467
4468 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
4469
4470 if (ev->status && conn->state == BT_CONNECTED) {
4471 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4472 hci_conn_drop(conn);
4473 goto unlock;
4474 }
4475
4476 if (conn->state == BT_CONFIG) {
4477 if (!ev->status)
4478 conn->state = BT_CONNECTED;
4479
4480 hci_connect_cfm(conn, ev->status);
4481 hci_conn_drop(conn);
4482 } else {
4483 hci_auth_cfm(conn, ev->status);
4484
4485 hci_conn_hold(conn);
4486 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4487 hci_conn_drop(conn);
4488 }
4489
4490unlock:
4491 hci_dev_unlock(hdev);
4492}
4493
4494static u8 hci_get_auth_req(struct hci_conn *conn)
4495{
4496 /* If remote requests no-bonding follow that lead */
4497 if (conn->remote_auth == HCI_AT_NO_BONDING ||
4498 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
4499 return conn->remote_auth | (conn->auth_type & 0x01);
4500
4501 /* If both remote and local have enough IO capabilities, require
4502 * MITM protection
4503 */
4504 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
4505 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
4506 return conn->remote_auth | 0x01;
4507
4508 /* No MITM protection possible so ignore remote requirement */
4509 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
4510}
4511
4512static u8 bredr_oob_data_present(struct hci_conn *conn)
4513{
4514 struct hci_dev *hdev = conn->hdev;
4515 struct oob_data *data;
4516
4517 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
4518 if (!data)
4519 return 0x00;
4520
4521 if (bredr_sc_enabled(hdev)) {
4522 /* When Secure Connections is enabled, then just
4523 * return the present value stored with the OOB
4524 * data. The stored value contains the right present
4525 * information. However it can only be trusted when
4526 * not in Secure Connection Only mode.
4527 */
4528 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
4529 return data->present;
4530
4531 /* When Secure Connections Only mode is enabled, then
4532 * the P-256 values are required. If they are not
4533 * available, then do not declare that OOB data is
4534 * present.
4535 */
4536 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
4537 !memcmp(data->hash256, ZERO_KEY, 16))
4538 return 0x00;
4539
4540 return 0x02;
4541 }
4542
4543 /* When Secure Connections is not enabled or actually
4544 * not supported by the hardware, then check that if
4545 * P-192 data values are present.
4546 */
4547 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
4548 !memcmp(data->hash192, ZERO_KEY, 16))
4549 return 0x00;
4550
4551 return 0x01;
4552}
4553
4554static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4555{
4556 struct hci_ev_io_capa_request *ev = (void *) skb->data;
4557 struct hci_conn *conn;
4558
4559 BT_DBG("%s", hdev->name);
4560
4561 hci_dev_lock(hdev);
4562
4563 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4564 if (!conn)
4565 goto unlock;
4566
4567 hci_conn_hold(conn);
4568
4569 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4570 goto unlock;
4571
4572 /* Allow pairing if we're pairable, the initiators of the
4573 * pairing or if the remote is not requesting bonding.
4574 */
4575 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
4576 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
4577 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
4578 struct hci_cp_io_capability_reply cp;
4579
4580 bacpy(&cp.bdaddr, &ev->bdaddr);
4581 /* Change the IO capability from KeyboardDisplay
4582 * to DisplayYesNo as it is not supported by BT spec. */
4583 cp.capability = (conn->io_capability == 0x04) ?
4584 HCI_IO_DISPLAY_YESNO : conn->io_capability;
4585
4586 /* If we are initiators, there is no remote information yet */
4587 if (conn->remote_auth == 0xff) {
4588 /* Request MITM protection if our IO caps allow it
4589 * except for the no-bonding case.
4590 */
4591 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4592 conn->auth_type != HCI_AT_NO_BONDING)
4593 conn->auth_type |= 0x01;
4594 } else {
4595 conn->auth_type = hci_get_auth_req(conn);
4596 }
4597
4598 /* If we're not bondable, force one of the non-bondable
4599 * authentication requirement values.
4600 */
4601 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4602 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
4603
4604 cp.authentication = conn->auth_type;
4605 cp.oob_data = bredr_oob_data_present(conn);
4606
4607 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4608 sizeof(cp), &cp);
4609 } else {
4610 struct hci_cp_io_capability_neg_reply cp;
4611
4612 bacpy(&cp.bdaddr, &ev->bdaddr);
4613 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4614
4615 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4616 sizeof(cp), &cp);
4617 }
4618
4619unlock:
4620 hci_dev_unlock(hdev);
4621}
4622
4623static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4624{
4625 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
4626 struct hci_conn *conn;
4627
4628 BT_DBG("%s", hdev->name);
4629
4630 hci_dev_lock(hdev);
4631
4632 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4633 if (!conn)
4634 goto unlock;
4635
4636 conn->remote_cap = ev->capability;
4637 conn->remote_auth = ev->authentication;
4638
4639unlock:
4640 hci_dev_unlock(hdev);
4641}
4642
4643static void hci_user_confirm_request_evt(struct hci_dev *hdev,
4644 struct sk_buff *skb)
4645{
4646 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4647 int loc_mitm, rem_mitm, confirm_hint = 0;
4648 struct hci_conn *conn;
4649
4650 BT_DBG("%s", hdev->name);
4651
4652 hci_dev_lock(hdev);
4653
4654 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4655 goto unlock;
4656
4657 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4658 if (!conn)
4659 goto unlock;
4660
4661 loc_mitm = (conn->auth_type & 0x01);
4662 rem_mitm = (conn->remote_auth & 0x01);
4663
4664 /* If we require MITM but the remote device can't provide that
4665 * (it has NoInputNoOutput) then reject the confirmation
4666 * request. We check the security level here since it doesn't
4667 * necessarily match conn->auth_type.
4668 */
4669 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
4670 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4671 BT_DBG("Rejecting request: remote device can't provide MITM");
4672 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4673 sizeof(ev->bdaddr), &ev->bdaddr);
4674 goto unlock;
4675 }
4676
4677 /* If no side requires MITM protection; auto-accept */
4678 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
4679 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4680
4681 /* If we're not the initiators request authorization to
4682 * proceed from user space (mgmt_user_confirm with
4683 * confirm_hint set to 1). The exception is if neither
4684 * side had MITM or if the local IO capability is
4685 * NoInputNoOutput, in which case we do auto-accept
4686 */
4687 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4688 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4689 (loc_mitm || rem_mitm)) {
4690 BT_DBG("Confirming auto-accept as acceptor");
4691 confirm_hint = 1;
4692 goto confirm;
4693 }
4694
4695 /* If there already exists link key in local host, leave the
4696 * decision to user space since the remote device could be
4697 * legitimate or malicious.
4698 */
4699 if (hci_find_link_key(hdev, &ev->bdaddr)) {
4700 bt_dev_dbg(hdev, "Local host already has link key");
4701 confirm_hint = 1;
4702 goto confirm;
4703 }
4704
4705 BT_DBG("Auto-accept of user confirmation with %ums delay",
4706 hdev->auto_accept_delay);
4707
4708 if (hdev->auto_accept_delay > 0) {
4709 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4710 queue_delayed_work(conn->hdev->workqueue,
4711 &conn->auto_accept_work, delay);
4712 goto unlock;
4713 }
4714
4715 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4716 sizeof(ev->bdaddr), &ev->bdaddr);
4717 goto unlock;
4718 }
4719
4720confirm:
4721 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4722 le32_to_cpu(ev->passkey), confirm_hint);
4723
4724unlock:
4725 hci_dev_unlock(hdev);
4726}
4727
4728static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4729 struct sk_buff *skb)
4730{
4731 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4732
4733 BT_DBG("%s", hdev->name);
4734
4735 if (hci_dev_test_flag(hdev, HCI_MGMT))
4736 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4737}
4738
4739static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4740 struct sk_buff *skb)
4741{
4742 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4743 struct hci_conn *conn;
4744
4745 BT_DBG("%s", hdev->name);
4746
4747 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4748 if (!conn)
4749 return;
4750
4751 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4752 conn->passkey_entered = 0;
4753
4754 if (hci_dev_test_flag(hdev, HCI_MGMT))
4755 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4756 conn->dst_type, conn->passkey_notify,
4757 conn->passkey_entered);
4758}
4759
4760static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4761{
4762 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4763 struct hci_conn *conn;
4764
4765 BT_DBG("%s", hdev->name);
4766
4767 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4768 if (!conn)
4769 return;
4770
4771 switch (ev->type) {
4772 case HCI_KEYPRESS_STARTED:
4773 conn->passkey_entered = 0;
4774 return;
4775
4776 case HCI_KEYPRESS_ENTERED:
4777 conn->passkey_entered++;
4778 break;
4779
4780 case HCI_KEYPRESS_ERASED:
4781 conn->passkey_entered--;
4782 break;
4783
4784 case HCI_KEYPRESS_CLEARED:
4785 conn->passkey_entered = 0;
4786 break;
4787
4788 case HCI_KEYPRESS_COMPLETED:
4789 return;
4790 }
4791
4792 if (hci_dev_test_flag(hdev, HCI_MGMT))
4793 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4794 conn->dst_type, conn->passkey_notify,
4795 conn->passkey_entered);
4796}
4797
4798static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4799 struct sk_buff *skb)
4800{
4801 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4802 struct hci_conn *conn;
4803
4804 BT_DBG("%s", hdev->name);
4805
4806 hci_dev_lock(hdev);
4807
4808 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4809 if (!conn)
4810 goto unlock;
4811
4812 /* Reset the authentication requirement to unknown */
4813 conn->remote_auth = 0xff;
4814
4815 /* To avoid duplicate auth_failed events to user space we check
4816 * the HCI_CONN_AUTH_PEND flag which will be set if we
4817 * initiated the authentication. A traditional auth_complete
4818 * event gets always produced as initiator and is also mapped to
4819 * the mgmt_auth_failed event */
4820 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4821 mgmt_auth_failed(conn, ev->status);
4822
4823 hci_conn_drop(conn);
4824
4825unlock:
4826 hci_dev_unlock(hdev);
4827}
4828
4829static void hci_remote_host_features_evt(struct hci_dev *hdev,
4830 struct sk_buff *skb)
4831{
4832 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4833 struct inquiry_entry *ie;
4834 struct hci_conn *conn;
4835
4836 BT_DBG("%s", hdev->name);
4837
4838 hci_dev_lock(hdev);
4839
4840 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4841 if (conn)
4842 memcpy(conn->features[1], ev->features, 8);
4843
4844 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4845 if (ie)
4846 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4847
4848 hci_dev_unlock(hdev);
4849}
4850
4851static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4852 struct sk_buff *skb)
4853{
4854 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4855 struct oob_data *data;
4856
4857 BT_DBG("%s", hdev->name);
4858
4859 hci_dev_lock(hdev);
4860
4861 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4862 goto unlock;
4863
4864 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4865 if (!data) {
4866 struct hci_cp_remote_oob_data_neg_reply cp;
4867
4868 bacpy(&cp.bdaddr, &ev->bdaddr);
4869 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4870 sizeof(cp), &cp);
4871 goto unlock;
4872 }
4873
4874 if (bredr_sc_enabled(hdev)) {
4875 struct hci_cp_remote_oob_ext_data_reply cp;
4876
4877 bacpy(&cp.bdaddr, &ev->bdaddr);
4878 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4879 memset(cp.hash192, 0, sizeof(cp.hash192));
4880 memset(cp.rand192, 0, sizeof(cp.rand192));
4881 } else {
4882 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4883 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4884 }
4885 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4886 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4887
4888 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4889 sizeof(cp), &cp);
4890 } else {
4891 struct hci_cp_remote_oob_data_reply cp;
4892
4893 bacpy(&cp.bdaddr, &ev->bdaddr);
4894 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4895 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4896
4897 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4898 sizeof(cp), &cp);
4899 }
4900
4901unlock:
4902 hci_dev_unlock(hdev);
4903}
4904
4905#if IS_ENABLED(CONFIG_BT_HS)
4906static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4907{
4908 struct hci_ev_channel_selected *ev = (void *)skb->data;
4909 struct hci_conn *hcon;
4910
4911 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4912
4913 skb_pull(skb, sizeof(*ev));
4914
4915 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4916 if (!hcon)
4917 return;
4918
4919 amp_read_loc_assoc_final_data(hdev, hcon);
4920}
4921
4922static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4923 struct sk_buff *skb)
4924{
4925 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4926 struct hci_conn *hcon, *bredr_hcon;
4927
4928 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4929 ev->status);
4930
4931 hci_dev_lock(hdev);
4932
4933 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4934 if (!hcon) {
4935 hci_dev_unlock(hdev);
4936 return;
4937 }
4938
4939 if (ev->status) {
4940 hci_conn_del(hcon);
4941 hci_dev_unlock(hdev);
4942 return;
4943 }
4944
4945 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4946
4947 hcon->state = BT_CONNECTED;
4948 bacpy(&hcon->dst, &bredr_hcon->dst);
4949
4950 hci_conn_hold(hcon);
4951 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4952 hci_conn_drop(hcon);
4953
4954 hci_debugfs_create_conn(hcon);
4955 hci_conn_add_sysfs(hcon);
4956
4957 amp_physical_cfm(bredr_hcon, hcon);
4958
4959 hci_dev_unlock(hdev);
4960}
4961
4962static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4963{
4964 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4965 struct hci_conn *hcon;
4966 struct hci_chan *hchan;
4967 struct amp_mgr *mgr;
4968
4969 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4970 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4971 ev->status);
4972
4973 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4974 if (!hcon)
4975 return;
4976
4977 /* Create AMP hchan */
4978 hchan = hci_chan_create(hcon);
4979 if (!hchan)
4980 return;
4981
4982 hchan->handle = le16_to_cpu(ev->handle);
4983
4984 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4985
4986 mgr = hcon->amp_mgr;
4987 if (mgr && mgr->bredr_chan) {
4988 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4989
4990 l2cap_chan_lock(bredr_chan);
4991
4992 bredr_chan->conn->mtu = hdev->block_mtu;
4993 l2cap_logical_cfm(bredr_chan, hchan, 0);
4994 hci_conn_hold(hcon);
4995
4996 l2cap_chan_unlock(bredr_chan);
4997 }
4998}
4999
5000static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
5001 struct sk_buff *skb)
5002{
5003 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
5004 struct hci_chan *hchan;
5005
5006 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
5007 le16_to_cpu(ev->handle), ev->status);
5008
5009 if (ev->status)
5010 return;
5011
5012 hci_dev_lock(hdev);
5013
5014 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5015 if (!hchan)
5016 goto unlock;
5017
5018 amp_destroy_logical_link(hchan, ev->reason);
5019
5020unlock:
5021 hci_dev_unlock(hdev);
5022}
5023
5024static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
5025 struct sk_buff *skb)
5026{
5027 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
5028 struct hci_conn *hcon;
5029
5030 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5031
5032 if (ev->status)
5033 return;
5034
5035 hci_dev_lock(hdev);
5036
5037 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5038 if (hcon) {
5039 hcon->state = BT_CLOSED;
5040 hci_conn_del(hcon);
5041 }
5042
5043 hci_dev_unlock(hdev);
5044}
5045#endif
5046
5047static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5048 bdaddr_t *bdaddr, u8 bdaddr_type, u8 role, u16 handle,
5049 u16 interval, u16 latency, u16 supervision_timeout)
5050{
5051 struct hci_conn_params *params;
5052 struct hci_conn *conn;
5053 struct smp_irk *irk;
5054 u8 addr_type;
5055
5056 hci_dev_lock(hdev);
5057
5058 /* All controllers implicitly stop advertising in the event of a
5059 * connection, so ensure that the state bit is cleared.
5060 */
5061 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5062
5063 conn = hci_lookup_le_connect(hdev);
5064 if (!conn) {
5065 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5066 if (!conn) {
5067 bt_dev_err(hdev, "no memory for new connection");
5068 goto unlock;
5069 }
5070
5071 conn->dst_type = bdaddr_type;
5072
5073 /* If we didn't have a hci_conn object previously
5074 * but we're in master role this must be something
5075 * initiated using a white list. Since white list based
5076 * connections are not "first class citizens" we don't
5077 * have full tracking of them. Therefore, we go ahead
5078 * with a "best effort" approach of determining the
5079 * initiator address based on the HCI_PRIVACY flag.
5080 */
5081 if (conn->out) {
5082 conn->resp_addr_type = bdaddr_type;
5083 bacpy(&conn->resp_addr, bdaddr);
5084 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5085 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5086 bacpy(&conn->init_addr, &hdev->rpa);
5087 } else {
5088 hci_copy_identity_address(hdev,
5089 &conn->init_addr,
5090 &conn->init_addr_type);
5091 }
5092 }
5093 } else {
5094 cancel_delayed_work(&conn->le_conn_timeout);
5095 }
5096
5097 if (!conn->out) {
5098 /* Set the responder (our side) address type based on
5099 * the advertising address type.
5100 */
5101 conn->resp_addr_type = hdev->adv_addr_type;
5102 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5103 /* In case of ext adv, resp_addr will be updated in
5104 * Adv Terminated event.
5105 */
5106 if (!ext_adv_capable(hdev))
5107 bacpy(&conn->resp_addr, &hdev->random_addr);
5108 } else {
5109 bacpy(&conn->resp_addr, &hdev->bdaddr);
5110 }
5111
5112 conn->init_addr_type = bdaddr_type;
5113 bacpy(&conn->init_addr, bdaddr);
5114
5115 /* For incoming connections, set the default minimum
5116 * and maximum connection interval. They will be used
5117 * to check if the parameters are in range and if not
5118 * trigger the connection update procedure.
5119 */
5120 conn->le_conn_min_interval = hdev->le_conn_min_interval;
5121 conn->le_conn_max_interval = hdev->le_conn_max_interval;
5122 }
5123
5124 /* Lookup the identity address from the stored connection
5125 * address and address type.
5126 *
5127 * When establishing connections to an identity address, the
5128 * connection procedure will store the resolvable random
5129 * address first. Now if it can be converted back into the
5130 * identity address, start using the identity address from
5131 * now on.
5132 */
5133 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5134 if (irk) {
5135 bacpy(&conn->dst, &irk->bdaddr);
5136 conn->dst_type = irk->addr_type;
5137 }
5138
5139 if (status) {
5140 hci_le_conn_failed(conn, status);
5141 goto unlock;
5142 }
5143
5144 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5145 addr_type = BDADDR_LE_PUBLIC;
5146 else
5147 addr_type = BDADDR_LE_RANDOM;
5148
5149 /* Drop the connection if the device is blocked */
5150 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
5151 hci_conn_drop(conn);
5152 goto unlock;
5153 }
5154
5155 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5156 mgmt_device_connected(hdev, conn, 0, NULL, 0);
5157
5158 conn->sec_level = BT_SECURITY_LOW;
5159 conn->handle = handle;
5160 conn->state = BT_CONFIG;
5161
5162 conn->le_conn_interval = interval;
5163 conn->le_conn_latency = latency;
5164 conn->le_supv_timeout = supervision_timeout;
5165
5166 hci_debugfs_create_conn(conn);
5167 hci_conn_add_sysfs(conn);
5168
5169 /* The remote features procedure is defined for master
5170 * role only. So only in case of an initiated connection
5171 * request the remote features.
5172 *
5173 * If the local controller supports slave-initiated features
5174 * exchange, then requesting the remote features in slave
5175 * role is possible. Otherwise just transition into the
5176 * connected state without requesting the remote features.
5177 */
5178 if (conn->out ||
5179 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
5180 struct hci_cp_le_read_remote_features cp;
5181
5182 cp.handle = __cpu_to_le16(conn->handle);
5183
5184 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5185 sizeof(cp), &cp);
5186
5187 hci_conn_hold(conn);
5188 } else {
5189 conn->state = BT_CONNECTED;
5190 hci_connect_cfm(conn, status);
5191 }
5192
5193 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5194 conn->dst_type);
5195 if (params) {
5196 list_del_init(¶ms->action);
5197 if (params->conn) {
5198 hci_conn_drop(params->conn);
5199 hci_conn_put(params->conn);
5200 params->conn = NULL;
5201 }
5202 }
5203
5204unlock:
5205 hci_update_background_scan(hdev);
5206 hci_dev_unlock(hdev);
5207}
5208
5209static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
5210{
5211 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
5212
5213 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5214
5215 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5216 ev->role, le16_to_cpu(ev->handle),
5217 le16_to_cpu(ev->interval),
5218 le16_to_cpu(ev->latency),
5219 le16_to_cpu(ev->supervision_timeout));
5220}
5221
5222static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev,
5223 struct sk_buff *skb)
5224{
5225 struct hci_ev_le_enh_conn_complete *ev = (void *) skb->data;
5226
5227 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5228
5229 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5230 ev->role, le16_to_cpu(ev->handle),
5231 le16_to_cpu(ev->interval),
5232 le16_to_cpu(ev->latency),
5233 le16_to_cpu(ev->supervision_timeout));
5234
5235 if (use_ll_privacy(hdev) &&
5236 hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY) &&
5237 hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
5238 hci_req_disable_address_resolution(hdev);
5239}
5240
5241static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
5242{
5243 struct hci_evt_le_ext_adv_set_term *ev = (void *) skb->data;
5244 struct hci_conn *conn;
5245
5246 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5247
5248 if (ev->status)
5249 return;
5250
5251 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
5252 if (conn) {
5253 struct adv_info *adv_instance;
5254
5255 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM)
5256 return;
5257
5258 if (!hdev->cur_adv_instance) {
5259 bacpy(&conn->resp_addr, &hdev->random_addr);
5260 return;
5261 }
5262
5263 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
5264 if (adv_instance)
5265 bacpy(&conn->resp_addr, &adv_instance->random_addr);
5266 }
5267}
5268
5269static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
5270 struct sk_buff *skb)
5271{
5272 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
5273 struct hci_conn *conn;
5274
5275 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5276
5277 if (ev->status)
5278 return;
5279
5280 hci_dev_lock(hdev);
5281
5282 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5283 if (conn) {
5284 conn->le_conn_interval = le16_to_cpu(ev->interval);
5285 conn->le_conn_latency = le16_to_cpu(ev->latency);
5286 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
5287 }
5288
5289 hci_dev_unlock(hdev);
5290}
5291
5292/* This function requires the caller holds hdev->lock */
5293static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
5294 bdaddr_t *addr,
5295 u8 addr_type, u8 adv_type,
5296 bdaddr_t *direct_rpa)
5297{
5298 struct hci_conn *conn;
5299 struct hci_conn_params *params;
5300
5301 /* If the event is not connectable don't proceed further */
5302 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
5303 return NULL;
5304
5305 /* Ignore if the device is blocked */
5306 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
5307 return NULL;
5308
5309 /* Most controller will fail if we try to create new connections
5310 * while we have an existing one in slave role.
5311 */
5312 if (hdev->conn_hash.le_num_slave > 0 &&
5313 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
5314 !(hdev->le_states[3] & 0x10)))
5315 return NULL;
5316
5317 /* If we're not connectable only connect devices that we have in
5318 * our pend_le_conns list.
5319 */
5320 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
5321 addr_type);
5322 if (!params)
5323 return NULL;
5324
5325 if (!params->explicit_connect) {
5326 switch (params->auto_connect) {
5327 case HCI_AUTO_CONN_DIRECT:
5328 /* Only devices advertising with ADV_DIRECT_IND are
5329 * triggering a connection attempt. This is allowing
5330 * incoming connections from slave devices.
5331 */
5332 if (adv_type != LE_ADV_DIRECT_IND)
5333 return NULL;
5334 break;
5335 case HCI_AUTO_CONN_ALWAYS:
5336 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
5337 * are triggering a connection attempt. This means
5338 * that incoming connections from slave device are
5339 * accepted and also outgoing connections to slave
5340 * devices are established when found.
5341 */
5342 break;
5343 default:
5344 return NULL;
5345 }
5346 }
5347
5348 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
5349 hdev->def_le_autoconnect_timeout, HCI_ROLE_MASTER,
5350 direct_rpa);
5351 if (!IS_ERR(conn)) {
5352 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
5353 * by higher layer that tried to connect, if no then
5354 * store the pointer since we don't really have any
5355 * other owner of the object besides the params that
5356 * triggered it. This way we can abort the connection if
5357 * the parameters get removed and keep the reference
5358 * count consistent once the connection is established.
5359 */
5360
5361 if (!params->explicit_connect)
5362 params->conn = hci_conn_get(conn);
5363
5364 return conn;
5365 }
5366
5367 switch (PTR_ERR(conn)) {
5368 case -EBUSY:
5369 /* If hci_connect() returns -EBUSY it means there is already
5370 * an LE connection attempt going on. Since controllers don't
5371 * support more than one connection attempt at the time, we
5372 * don't consider this an error case.
5373 */
5374 break;
5375 default:
5376 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
5377 return NULL;
5378 }
5379
5380 return NULL;
5381}
5382
5383static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
5384 u8 bdaddr_type, bdaddr_t *direct_addr,
5385 u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
5386 bool ext_adv)
5387{
5388 struct discovery_state *d = &hdev->discovery;
5389 struct smp_irk *irk;
5390 struct hci_conn *conn;
5391 bool match;
5392 u32 flags;
5393 u8 *ptr, real_len;
5394
5395 switch (type) {
5396 case LE_ADV_IND:
5397 case LE_ADV_DIRECT_IND:
5398 case LE_ADV_SCAN_IND:
5399 case LE_ADV_NONCONN_IND:
5400 case LE_ADV_SCAN_RSP:
5401 break;
5402 default:
5403 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
5404 "type: 0x%02x", type);
5405 return;
5406 }
5407
5408 if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
5409 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
5410 return;
5411 }
5412
5413 /* Find the end of the data in case the report contains padded zero
5414 * bytes at the end causing an invalid length value.
5415 *
5416 * When data is NULL, len is 0 so there is no need for extra ptr
5417 * check as 'ptr < data + 0' is already false in such case.
5418 */
5419 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
5420 if (ptr + 1 + *ptr > data + len)
5421 break;
5422 }
5423
5424 real_len = ptr - data;
5425
5426 /* Adjust for actual length */
5427 if (len != real_len) {
5428 bt_dev_err_ratelimited(hdev, "advertising data len corrected %u -> %u",
5429 len, real_len);
5430 len = real_len;
5431 }
5432
5433 /* If the direct address is present, then this report is from
5434 * a LE Direct Advertising Report event. In that case it is
5435 * important to see if the address is matching the local
5436 * controller address.
5437 */
5438 if (direct_addr) {
5439 /* Only resolvable random addresses are valid for these
5440 * kind of reports and others can be ignored.
5441 */
5442 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
5443 return;
5444
5445 /* If the controller is not using resolvable random
5446 * addresses, then this report can be ignored.
5447 */
5448 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
5449 return;
5450
5451 /* If the local IRK of the controller does not match
5452 * with the resolvable random address provided, then
5453 * this report can be ignored.
5454 */
5455 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
5456 return;
5457 }
5458
5459 /* Check if we need to convert to identity address */
5460 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
5461 if (irk) {
5462 bdaddr = &irk->bdaddr;
5463 bdaddr_type = irk->addr_type;
5464 }
5465
5466 /* Check if we have been requested to connect to this device.
5467 *
5468 * direct_addr is set only for directed advertising reports (it is NULL
5469 * for advertising reports) and is already verified to be RPA above.
5470 */
5471 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type,
5472 direct_addr);
5473 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
5474 /* Store report for later inclusion by
5475 * mgmt_device_connected
5476 */
5477 memcpy(conn->le_adv_data, data, len);
5478 conn->le_adv_data_len = len;
5479 }
5480
5481 /* Passive scanning shouldn't trigger any device found events,
5482 * except for devices marked as CONN_REPORT for which we do send
5483 * device found events, or advertisement monitoring requested.
5484 */
5485 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
5486 if (type == LE_ADV_DIRECT_IND)
5487 return;
5488
5489 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
5490 bdaddr, bdaddr_type) &&
5491 idr_is_empty(&hdev->adv_monitors_idr))
5492 return;
5493
5494 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
5495 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
5496 else
5497 flags = 0;
5498 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
5499 rssi, flags, data, len, NULL, 0);
5500 return;
5501 }
5502
5503 /* When receiving non-connectable or scannable undirected
5504 * advertising reports, this means that the remote device is
5505 * not connectable and then clearly indicate this in the
5506 * device found event.
5507 *
5508 * When receiving a scan response, then there is no way to
5509 * know if the remote device is connectable or not. However
5510 * since scan responses are merged with a previously seen
5511 * advertising report, the flags field from that report
5512 * will be used.
5513 *
5514 * In the really unlikely case that a controller get confused
5515 * and just sends a scan response event, then it is marked as
5516 * not connectable as well.
5517 */
5518 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
5519 type == LE_ADV_SCAN_RSP)
5520 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
5521 else
5522 flags = 0;
5523
5524 /* If there's nothing pending either store the data from this
5525 * event or send an immediate device found event if the data
5526 * should not be stored for later.
5527 */
5528 if (!ext_adv && !has_pending_adv_report(hdev)) {
5529 /* If the report will trigger a SCAN_REQ store it for
5530 * later merging.
5531 */
5532 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
5533 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
5534 rssi, flags, data, len);
5535 return;
5536 }
5537
5538 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
5539 rssi, flags, data, len, NULL, 0);
5540 return;
5541 }
5542
5543 /* Check if the pending report is for the same device as the new one */
5544 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
5545 bdaddr_type == d->last_adv_addr_type);
5546
5547 /* If the pending data doesn't match this report or this isn't a
5548 * scan response (e.g. we got a duplicate ADV_IND) then force
5549 * sending of the pending data.
5550 */
5551 if (type != LE_ADV_SCAN_RSP || !match) {
5552 /* Send out whatever is in the cache, but skip duplicates */
5553 if (!match)
5554 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
5555 d->last_adv_addr_type, NULL,
5556 d->last_adv_rssi, d->last_adv_flags,
5557 d->last_adv_data,
5558 d->last_adv_data_len, NULL, 0);
5559
5560 /* If the new report will trigger a SCAN_REQ store it for
5561 * later merging.
5562 */
5563 if (!ext_adv && (type == LE_ADV_IND ||
5564 type == LE_ADV_SCAN_IND)) {
5565 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
5566 rssi, flags, data, len);
5567 return;
5568 }
5569
5570 /* The advertising reports cannot be merged, so clear
5571 * the pending report and send out a device found event.
5572 */
5573 clear_pending_adv_report(hdev);
5574 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
5575 rssi, flags, data, len, NULL, 0);
5576 return;
5577 }
5578
5579 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
5580 * the new event is a SCAN_RSP. We can therefore proceed with
5581 * sending a merged device found event.
5582 */
5583 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
5584 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
5585 d->last_adv_data, d->last_adv_data_len, data, len);
5586 clear_pending_adv_report(hdev);
5587}
5588
5589static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
5590{
5591 u8 num_reports = skb->data[0];
5592 void *ptr = &skb->data[1];
5593
5594 hci_dev_lock(hdev);
5595
5596 while (num_reports--) {
5597 struct hci_ev_le_advertising_info *ev = ptr;
5598 s8 rssi;
5599
5600 if (ev->length <= HCI_MAX_AD_LENGTH) {
5601 rssi = ev->data[ev->length];
5602 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5603 ev->bdaddr_type, NULL, 0, rssi,
5604 ev->data, ev->length, false);
5605 } else {
5606 bt_dev_err(hdev, "Dropping invalid advertising data");
5607 }
5608
5609 ptr += sizeof(*ev) + ev->length + 1;
5610 }
5611
5612 hci_dev_unlock(hdev);
5613}
5614
5615static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
5616{
5617 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
5618 switch (evt_type) {
5619 case LE_LEGACY_ADV_IND:
5620 return LE_ADV_IND;
5621 case LE_LEGACY_ADV_DIRECT_IND:
5622 return LE_ADV_DIRECT_IND;
5623 case LE_LEGACY_ADV_SCAN_IND:
5624 return LE_ADV_SCAN_IND;
5625 case LE_LEGACY_NONCONN_IND:
5626 return LE_ADV_NONCONN_IND;
5627 case LE_LEGACY_SCAN_RSP_ADV:
5628 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
5629 return LE_ADV_SCAN_RSP;
5630 }
5631
5632 goto invalid;
5633 }
5634
5635 if (evt_type & LE_EXT_ADV_CONN_IND) {
5636 if (evt_type & LE_EXT_ADV_DIRECT_IND)
5637 return LE_ADV_DIRECT_IND;
5638
5639 return LE_ADV_IND;
5640 }
5641
5642 if (evt_type & LE_EXT_ADV_SCAN_RSP)
5643 return LE_ADV_SCAN_RSP;
5644
5645 if (evt_type & LE_EXT_ADV_SCAN_IND)
5646 return LE_ADV_SCAN_IND;
5647
5648 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
5649 evt_type & LE_EXT_ADV_DIRECT_IND)
5650 return LE_ADV_NONCONN_IND;
5651
5652invalid:
5653 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
5654 evt_type);
5655
5656 return LE_ADV_INVALID;
5657}
5658
5659static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
5660{
5661 u8 num_reports = skb->data[0];
5662 void *ptr = &skb->data[1];
5663
5664 hci_dev_lock(hdev);
5665
5666 while (num_reports--) {
5667 struct hci_ev_le_ext_adv_report *ev = ptr;
5668 u8 legacy_evt_type;
5669 u16 evt_type;
5670
5671 evt_type = __le16_to_cpu(ev->evt_type);
5672 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
5673 if (legacy_evt_type != LE_ADV_INVALID) {
5674 process_adv_report(hdev, legacy_evt_type, &ev->bdaddr,
5675 ev->bdaddr_type, NULL, 0, ev->rssi,
5676 ev->data, ev->length,
5677 !(evt_type & LE_EXT_ADV_LEGACY_PDU));
5678 }
5679
5680 ptr += sizeof(*ev) + ev->length;
5681 }
5682
5683 hci_dev_unlock(hdev);
5684}
5685
5686static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
5687 struct sk_buff *skb)
5688{
5689 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
5690 struct hci_conn *conn;
5691
5692 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5693
5694 hci_dev_lock(hdev);
5695
5696 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5697 if (conn) {
5698 if (!ev->status)
5699 memcpy(conn->features[0], ev->features, 8);
5700
5701 if (conn->state == BT_CONFIG) {
5702 __u8 status;
5703
5704 /* If the local controller supports slave-initiated
5705 * features exchange, but the remote controller does
5706 * not, then it is possible that the error code 0x1a
5707 * for unsupported remote feature gets returned.
5708 *
5709 * In this specific case, allow the connection to
5710 * transition into connected state and mark it as
5711 * successful.
5712 */
5713 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
5714 !conn->out && ev->status == 0x1a)
5715 status = 0x00;
5716 else
5717 status = ev->status;
5718
5719 conn->state = BT_CONNECTED;
5720 hci_connect_cfm(conn, status);
5721 hci_conn_drop(conn);
5722 }
5723 }
5724
5725 hci_dev_unlock(hdev);
5726}
5727
5728static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
5729{
5730 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
5731 struct hci_cp_le_ltk_reply cp;
5732 struct hci_cp_le_ltk_neg_reply neg;
5733 struct hci_conn *conn;
5734 struct smp_ltk *ltk;
5735
5736 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
5737
5738 hci_dev_lock(hdev);
5739
5740 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5741 if (conn == NULL)
5742 goto not_found;
5743
5744 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
5745 if (!ltk)
5746 goto not_found;
5747
5748 if (smp_ltk_is_sc(ltk)) {
5749 /* With SC both EDiv and Rand are set to zero */
5750 if (ev->ediv || ev->rand)
5751 goto not_found;
5752 } else {
5753 /* For non-SC keys check that EDiv and Rand match */
5754 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
5755 goto not_found;
5756 }
5757
5758 memcpy(cp.ltk, ltk->val, ltk->enc_size);
5759 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
5760 cp.handle = cpu_to_le16(conn->handle);
5761
5762 conn->pending_sec_level = smp_ltk_sec_level(ltk);
5763
5764 conn->enc_key_size = ltk->enc_size;
5765
5766 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
5767
5768 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
5769 * temporary key used to encrypt a connection following
5770 * pairing. It is used during the Encrypted Session Setup to
5771 * distribute the keys. Later, security can be re-established
5772 * using a distributed LTK.
5773 */
5774 if (ltk->type == SMP_STK) {
5775 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5776 list_del_rcu(<k->list);
5777 kfree_rcu(ltk, rcu);
5778 } else {
5779 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5780 }
5781
5782 hci_dev_unlock(hdev);
5783
5784 return;
5785
5786not_found:
5787 neg.handle = ev->handle;
5788 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
5789 hci_dev_unlock(hdev);
5790}
5791
5792static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
5793 u8 reason)
5794{
5795 struct hci_cp_le_conn_param_req_neg_reply cp;
5796
5797 cp.handle = cpu_to_le16(handle);
5798 cp.reason = reason;
5799
5800 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
5801 &cp);
5802}
5803
5804static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
5805 struct sk_buff *skb)
5806{
5807 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
5808 struct hci_cp_le_conn_param_req_reply cp;
5809 struct hci_conn *hcon;
5810 u16 handle, min, max, latency, timeout;
5811
5812 handle = le16_to_cpu(ev->handle);
5813 min = le16_to_cpu(ev->interval_min);
5814 max = le16_to_cpu(ev->interval_max);
5815 latency = le16_to_cpu(ev->latency);
5816 timeout = le16_to_cpu(ev->timeout);
5817
5818 hcon = hci_conn_hash_lookup_handle(hdev, handle);
5819 if (!hcon || hcon->state != BT_CONNECTED)
5820 return send_conn_param_neg_reply(hdev, handle,
5821 HCI_ERROR_UNKNOWN_CONN_ID);
5822
5823 if (hci_check_conn_params(min, max, latency, timeout))
5824 return send_conn_param_neg_reply(hdev, handle,
5825 HCI_ERROR_INVALID_LL_PARAMS);
5826
5827 if (hcon->role == HCI_ROLE_MASTER) {
5828 struct hci_conn_params *params;
5829 u8 store_hint;
5830
5831 hci_dev_lock(hdev);
5832
5833 params = hci_conn_params_lookup(hdev, &hcon->dst,
5834 hcon->dst_type);
5835 if (params) {
5836 params->conn_min_interval = min;
5837 params->conn_max_interval = max;
5838 params->conn_latency = latency;
5839 params->supervision_timeout = timeout;
5840 store_hint = 0x01;
5841 } else{
5842 store_hint = 0x00;
5843 }
5844
5845 hci_dev_unlock(hdev);
5846
5847 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
5848 store_hint, min, max, latency, timeout);
5849 }
5850
5851 cp.handle = ev->handle;
5852 cp.interval_min = ev->interval_min;
5853 cp.interval_max = ev->interval_max;
5854 cp.latency = ev->latency;
5855 cp.timeout = ev->timeout;
5856 cp.min_ce_len = 0;
5857 cp.max_ce_len = 0;
5858
5859 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
5860}
5861
5862static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
5863 struct sk_buff *skb)
5864{
5865 u8 num_reports = skb->data[0];
5866 void *ptr = &skb->data[1];
5867
5868 hci_dev_lock(hdev);
5869
5870 while (num_reports--) {
5871 struct hci_ev_le_direct_adv_info *ev = ptr;
5872
5873 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5874 ev->bdaddr_type, &ev->direct_addr,
5875 ev->direct_addr_type, ev->rssi, NULL, 0,
5876 false);
5877
5878 ptr += sizeof(*ev);
5879 }
5880
5881 hci_dev_unlock(hdev);
5882}
5883
5884static void hci_le_phy_update_evt(struct hci_dev *hdev, struct sk_buff *skb)
5885{
5886 struct hci_ev_le_phy_update_complete *ev = (void *) skb->data;
5887 struct hci_conn *conn;
5888
5889 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5890
5891 if (!ev->status)
5892 return;
5893
5894 hci_dev_lock(hdev);
5895
5896 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5897 if (!conn)
5898 goto unlock;
5899
5900 conn->le_tx_phy = ev->tx_phy;
5901 conn->le_rx_phy = ev->rx_phy;
5902
5903unlock:
5904 hci_dev_unlock(hdev);
5905}
5906
5907static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
5908{
5909 struct hci_ev_le_meta *le_ev = (void *) skb->data;
5910
5911 skb_pull(skb, sizeof(*le_ev));
5912
5913 switch (le_ev->subevent) {
5914 case HCI_EV_LE_CONN_COMPLETE:
5915 hci_le_conn_complete_evt(hdev, skb);
5916 break;
5917
5918 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
5919 hci_le_conn_update_complete_evt(hdev, skb);
5920 break;
5921
5922 case HCI_EV_LE_ADVERTISING_REPORT:
5923 hci_le_adv_report_evt(hdev, skb);
5924 break;
5925
5926 case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
5927 hci_le_remote_feat_complete_evt(hdev, skb);
5928 break;
5929
5930 case HCI_EV_LE_LTK_REQ:
5931 hci_le_ltk_request_evt(hdev, skb);
5932 break;
5933
5934 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
5935 hci_le_remote_conn_param_req_evt(hdev, skb);
5936 break;
5937
5938 case HCI_EV_LE_DIRECT_ADV_REPORT:
5939 hci_le_direct_adv_report_evt(hdev, skb);
5940 break;
5941
5942 case HCI_EV_LE_PHY_UPDATE_COMPLETE:
5943 hci_le_phy_update_evt(hdev, skb);
5944 break;
5945
5946 case HCI_EV_LE_EXT_ADV_REPORT:
5947 hci_le_ext_adv_report_evt(hdev, skb);
5948 break;
5949
5950 case HCI_EV_LE_ENHANCED_CONN_COMPLETE:
5951 hci_le_enh_conn_complete_evt(hdev, skb);
5952 break;
5953
5954 case HCI_EV_LE_EXT_ADV_SET_TERM:
5955 hci_le_ext_adv_term_evt(hdev, skb);
5956 break;
5957
5958 default:
5959 break;
5960 }
5961}
5962
5963static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
5964 u8 event, struct sk_buff *skb)
5965{
5966 struct hci_ev_cmd_complete *ev;
5967 struct hci_event_hdr *hdr;
5968
5969 if (!skb)
5970 return false;
5971
5972 if (skb->len < sizeof(*hdr)) {
5973 bt_dev_err(hdev, "too short HCI event");
5974 return false;
5975 }
5976
5977 hdr = (void *) skb->data;
5978 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5979
5980 if (event) {
5981 if (hdr->evt != event)
5982 return false;
5983 return true;
5984 }
5985
5986 /* Check if request ended in Command Status - no way to retreive
5987 * any extra parameters in this case.
5988 */
5989 if (hdr->evt == HCI_EV_CMD_STATUS)
5990 return false;
5991
5992 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
5993 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
5994 hdr->evt);
5995 return false;
5996 }
5997
5998 if (skb->len < sizeof(*ev)) {
5999 bt_dev_err(hdev, "too short cmd_complete event");
6000 return false;
6001 }
6002
6003 ev = (void *) skb->data;
6004 skb_pull(skb, sizeof(*ev));
6005
6006 if (opcode != __le16_to_cpu(ev->opcode)) {
6007 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
6008 __le16_to_cpu(ev->opcode));
6009 return false;
6010 }
6011
6012 return true;
6013}
6014
6015void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
6016{
6017 struct hci_event_hdr *hdr = (void *) skb->data;
6018 hci_req_complete_t req_complete = NULL;
6019 hci_req_complete_skb_t req_complete_skb = NULL;
6020 struct sk_buff *orig_skb = NULL;
6021 u8 status = 0, event = hdr->evt, req_evt = 0;
6022 u16 opcode = HCI_OP_NOP;
6023
6024 if (!event) {
6025 bt_dev_warn(hdev, "Received unexpected HCI Event 00000000");
6026 goto done;
6027 }
6028
6029 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) {
6030 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
6031 opcode = __le16_to_cpu(cmd_hdr->opcode);
6032 hci_req_cmd_complete(hdev, opcode, status, &req_complete,
6033 &req_complete_skb);
6034 req_evt = event;
6035 }
6036
6037 /* If it looks like we might end up having to call
6038 * req_complete_skb, store a pristine copy of the skb since the
6039 * various handlers may modify the original one through
6040 * skb_pull() calls, etc.
6041 */
6042 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
6043 event == HCI_EV_CMD_COMPLETE)
6044 orig_skb = skb_clone(skb, GFP_KERNEL);
6045
6046 skb_pull(skb, HCI_EVENT_HDR_SIZE);
6047
6048 switch (event) {
6049 case HCI_EV_INQUIRY_COMPLETE:
6050 hci_inquiry_complete_evt(hdev, skb);
6051 break;
6052
6053 case HCI_EV_INQUIRY_RESULT:
6054 hci_inquiry_result_evt(hdev, skb);
6055 break;
6056
6057 case HCI_EV_CONN_COMPLETE:
6058 hci_conn_complete_evt(hdev, skb);
6059 break;
6060
6061 case HCI_EV_CONN_REQUEST:
6062 hci_conn_request_evt(hdev, skb);
6063 break;
6064
6065 case HCI_EV_DISCONN_COMPLETE:
6066 hci_disconn_complete_evt(hdev, skb);
6067 break;
6068
6069 case HCI_EV_AUTH_COMPLETE:
6070 hci_auth_complete_evt(hdev, skb);
6071 break;
6072
6073 case HCI_EV_REMOTE_NAME:
6074 hci_remote_name_evt(hdev, skb);
6075 break;
6076
6077 case HCI_EV_ENCRYPT_CHANGE:
6078 hci_encrypt_change_evt(hdev, skb);
6079 break;
6080
6081 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
6082 hci_change_link_key_complete_evt(hdev, skb);
6083 break;
6084
6085 case HCI_EV_REMOTE_FEATURES:
6086 hci_remote_features_evt(hdev, skb);
6087 break;
6088
6089 case HCI_EV_CMD_COMPLETE:
6090 hci_cmd_complete_evt(hdev, skb, &opcode, &status,
6091 &req_complete, &req_complete_skb);
6092 break;
6093
6094 case HCI_EV_CMD_STATUS:
6095 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
6096 &req_complete_skb);
6097 break;
6098
6099 case HCI_EV_HARDWARE_ERROR:
6100 hci_hardware_error_evt(hdev, skb);
6101 break;
6102
6103 case HCI_EV_ROLE_CHANGE:
6104 hci_role_change_evt(hdev, skb);
6105 break;
6106
6107 case HCI_EV_NUM_COMP_PKTS:
6108 hci_num_comp_pkts_evt(hdev, skb);
6109 break;
6110
6111 case HCI_EV_MODE_CHANGE:
6112 hci_mode_change_evt(hdev, skb);
6113 break;
6114
6115 case HCI_EV_PIN_CODE_REQ:
6116 hci_pin_code_request_evt(hdev, skb);
6117 break;
6118
6119 case HCI_EV_LINK_KEY_REQ:
6120 hci_link_key_request_evt(hdev, skb);
6121 break;
6122
6123 case HCI_EV_LINK_KEY_NOTIFY:
6124 hci_link_key_notify_evt(hdev, skb);
6125 break;
6126
6127 case HCI_EV_CLOCK_OFFSET:
6128 hci_clock_offset_evt(hdev, skb);
6129 break;
6130
6131 case HCI_EV_PKT_TYPE_CHANGE:
6132 hci_pkt_type_change_evt(hdev, skb);
6133 break;
6134
6135 case HCI_EV_PSCAN_REP_MODE:
6136 hci_pscan_rep_mode_evt(hdev, skb);
6137 break;
6138
6139 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
6140 hci_inquiry_result_with_rssi_evt(hdev, skb);
6141 break;
6142
6143 case HCI_EV_REMOTE_EXT_FEATURES:
6144 hci_remote_ext_features_evt(hdev, skb);
6145 break;
6146
6147 case HCI_EV_SYNC_CONN_COMPLETE:
6148 hci_sync_conn_complete_evt(hdev, skb);
6149 break;
6150
6151 case HCI_EV_EXTENDED_INQUIRY_RESULT:
6152 hci_extended_inquiry_result_evt(hdev, skb);
6153 break;
6154
6155 case HCI_EV_KEY_REFRESH_COMPLETE:
6156 hci_key_refresh_complete_evt(hdev, skb);
6157 break;
6158
6159 case HCI_EV_IO_CAPA_REQUEST:
6160 hci_io_capa_request_evt(hdev, skb);
6161 break;
6162
6163 case HCI_EV_IO_CAPA_REPLY:
6164 hci_io_capa_reply_evt(hdev, skb);
6165 break;
6166
6167 case HCI_EV_USER_CONFIRM_REQUEST:
6168 hci_user_confirm_request_evt(hdev, skb);
6169 break;
6170
6171 case HCI_EV_USER_PASSKEY_REQUEST:
6172 hci_user_passkey_request_evt(hdev, skb);
6173 break;
6174
6175 case HCI_EV_USER_PASSKEY_NOTIFY:
6176 hci_user_passkey_notify_evt(hdev, skb);
6177 break;
6178
6179 case HCI_EV_KEYPRESS_NOTIFY:
6180 hci_keypress_notify_evt(hdev, skb);
6181 break;
6182
6183 case HCI_EV_SIMPLE_PAIR_COMPLETE:
6184 hci_simple_pair_complete_evt(hdev, skb);
6185 break;
6186
6187 case HCI_EV_REMOTE_HOST_FEATURES:
6188 hci_remote_host_features_evt(hdev, skb);
6189 break;
6190
6191 case HCI_EV_LE_META:
6192 hci_le_meta_evt(hdev, skb);
6193 break;
6194
6195 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
6196 hci_remote_oob_data_request_evt(hdev, skb);
6197 break;
6198
6199#if IS_ENABLED(CONFIG_BT_HS)
6200 case HCI_EV_CHANNEL_SELECTED:
6201 hci_chan_selected_evt(hdev, skb);
6202 break;
6203
6204 case HCI_EV_PHY_LINK_COMPLETE:
6205 hci_phy_link_complete_evt(hdev, skb);
6206 break;
6207
6208 case HCI_EV_LOGICAL_LINK_COMPLETE:
6209 hci_loglink_complete_evt(hdev, skb);
6210 break;
6211
6212 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
6213 hci_disconn_loglink_complete_evt(hdev, skb);
6214 break;
6215
6216 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
6217 hci_disconn_phylink_complete_evt(hdev, skb);
6218 break;
6219#endif
6220
6221 case HCI_EV_NUM_COMP_BLOCKS:
6222 hci_num_comp_blocks_evt(hdev, skb);
6223 break;
6224
6225 case HCI_EV_VENDOR:
6226 msft_vendor_evt(hdev, skb);
6227 break;
6228
6229 default:
6230 BT_DBG("%s event 0x%2.2x", hdev->name, event);
6231 break;
6232 }
6233
6234 if (req_complete) {
6235 req_complete(hdev, status, opcode);
6236 } else if (req_complete_skb) {
6237 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
6238 kfree_skb(orig_skb);
6239 orig_skb = NULL;
6240 }
6241 req_complete_skb(hdev, status, opcode, orig_skb);
6242 }
6243
6244done:
6245 kfree_skb(orig_skb);
6246 kfree_skb(skb);
6247 hdev->stat.evt_rx++;
6248}