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