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UBUNTU: Ubuntu-4.15.0-96.97
[mirror_ubuntu-bionic-kernel.git] / net / bluetooth / hci_event.c
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
44 static 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
69 static 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
81 static 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
95 static 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
101 static 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
120 static 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
139 static 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
163 static 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
176 static 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
194 static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
195 {
196 __u8 status = *((__u8 *) skb->data);
197
198 BT_DBG("%s status 0x%2.2x", hdev->name, status);
199
200 clear_bit(HCI_RESET, &hdev->flags);
201
202 if (status)
203 return;
204
205 /* Reset all non-persistent flags */
206 hci_dev_clear_volatile_flags(hdev);
207
208 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
209
210 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
211 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
212
213 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
214 hdev->adv_data_len = 0;
215
216 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
217 hdev->scan_rsp_data_len = 0;
218
219 hdev->le_scan_type = LE_SCAN_PASSIVE;
220
221 hdev->ssp_debug_mode = 0;
222
223 hci_bdaddr_list_clear(&hdev->le_white_list);
224 }
225
226 static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
227 struct sk_buff *skb)
228 {
229 struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
230 struct hci_cp_read_stored_link_key *sent;
231
232 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
233
234 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
235 if (!sent)
236 return;
237
238 if (!rp->status && sent->read_all == 0x01) {
239 hdev->stored_max_keys = rp->max_keys;
240 hdev->stored_num_keys = rp->num_keys;
241 }
242 }
243
244 static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
245 struct sk_buff *skb)
246 {
247 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;
248
249 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
250
251 if (rp->status)
252 return;
253
254 if (rp->num_keys <= hdev->stored_num_keys)
255 hdev->stored_num_keys -= rp->num_keys;
256 else
257 hdev->stored_num_keys = 0;
258 }
259
260 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
261 {
262 __u8 status = *((__u8 *) skb->data);
263 void *sent;
264
265 BT_DBG("%s status 0x%2.2x", hdev->name, status);
266
267 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
268 if (!sent)
269 return;
270
271 hci_dev_lock(hdev);
272
273 if (hci_dev_test_flag(hdev, HCI_MGMT))
274 mgmt_set_local_name_complete(hdev, sent, status);
275 else if (!status)
276 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
277
278 hci_dev_unlock(hdev);
279 }
280
281 static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
282 {
283 struct hci_rp_read_local_name *rp = (void *) skb->data;
284
285 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
286
287 if (rp->status)
288 return;
289
290 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
291 hci_dev_test_flag(hdev, HCI_CONFIG))
292 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
293 }
294
295 static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
296 {
297 __u8 status = *((__u8 *) skb->data);
298 void *sent;
299
300 BT_DBG("%s status 0x%2.2x", hdev->name, status);
301
302 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
303 if (!sent)
304 return;
305
306 hci_dev_lock(hdev);
307
308 if (!status) {
309 __u8 param = *((__u8 *) sent);
310
311 if (param == AUTH_ENABLED)
312 set_bit(HCI_AUTH, &hdev->flags);
313 else
314 clear_bit(HCI_AUTH, &hdev->flags);
315 }
316
317 if (hci_dev_test_flag(hdev, HCI_MGMT))
318 mgmt_auth_enable_complete(hdev, status);
319
320 hci_dev_unlock(hdev);
321 }
322
323 static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
324 {
325 __u8 status = *((__u8 *) skb->data);
326 __u8 param;
327 void *sent;
328
329 BT_DBG("%s status 0x%2.2x", hdev->name, status);
330
331 if (status)
332 return;
333
334 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
335 if (!sent)
336 return;
337
338 param = *((__u8 *) sent);
339
340 if (param)
341 set_bit(HCI_ENCRYPT, &hdev->flags);
342 else
343 clear_bit(HCI_ENCRYPT, &hdev->flags);
344 }
345
346 static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
347 {
348 __u8 status = *((__u8 *) skb->data);
349 __u8 param;
350 void *sent;
351
352 BT_DBG("%s status 0x%2.2x", hdev->name, status);
353
354 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
355 if (!sent)
356 return;
357
358 param = *((__u8 *) sent);
359
360 hci_dev_lock(hdev);
361
362 if (status) {
363 hdev->discov_timeout = 0;
364 goto done;
365 }
366
367 if (param & SCAN_INQUIRY)
368 set_bit(HCI_ISCAN, &hdev->flags);
369 else
370 clear_bit(HCI_ISCAN, &hdev->flags);
371
372 if (param & SCAN_PAGE)
373 set_bit(HCI_PSCAN, &hdev->flags);
374 else
375 clear_bit(HCI_PSCAN, &hdev->flags);
376
377 done:
378 hci_dev_unlock(hdev);
379 }
380
381 static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
382 {
383 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
384
385 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
386
387 if (rp->status)
388 return;
389
390 memcpy(hdev->dev_class, rp->dev_class, 3);
391
392 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
393 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
394 }
395
396 static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
397 {
398 __u8 status = *((__u8 *) skb->data);
399 void *sent;
400
401 BT_DBG("%s status 0x%2.2x", hdev->name, status);
402
403 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
404 if (!sent)
405 return;
406
407 hci_dev_lock(hdev);
408
409 if (status == 0)
410 memcpy(hdev->dev_class, sent, 3);
411
412 if (hci_dev_test_flag(hdev, HCI_MGMT))
413 mgmt_set_class_of_dev_complete(hdev, sent, status);
414
415 hci_dev_unlock(hdev);
416 }
417
418 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
419 {
420 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
421 __u16 setting;
422
423 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
424
425 if (rp->status)
426 return;
427
428 setting = __le16_to_cpu(rp->voice_setting);
429
430 if (hdev->voice_setting == setting)
431 return;
432
433 hdev->voice_setting = setting;
434
435 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
436
437 if (hdev->notify)
438 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
439 }
440
441 static void hci_cc_write_voice_setting(struct hci_dev *hdev,
442 struct sk_buff *skb)
443 {
444 __u8 status = *((__u8 *) skb->data);
445 __u16 setting;
446 void *sent;
447
448 BT_DBG("%s status 0x%2.2x", hdev->name, status);
449
450 if (status)
451 return;
452
453 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
454 if (!sent)
455 return;
456
457 setting = get_unaligned_le16(sent);
458
459 if (hdev->voice_setting == setting)
460 return;
461
462 hdev->voice_setting = setting;
463
464 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
465
466 if (hdev->notify)
467 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
468 }
469
470 static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
471 struct sk_buff *skb)
472 {
473 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
474
475 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
476
477 if (rp->status)
478 return;
479
480 hdev->num_iac = rp->num_iac;
481
482 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
483 }
484
485 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
486 {
487 __u8 status = *((__u8 *) skb->data);
488 struct hci_cp_write_ssp_mode *sent;
489
490 BT_DBG("%s status 0x%2.2x", hdev->name, status);
491
492 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
493 if (!sent)
494 return;
495
496 hci_dev_lock(hdev);
497
498 if (!status) {
499 if (sent->mode)
500 hdev->features[1][0] |= LMP_HOST_SSP;
501 else
502 hdev->features[1][0] &= ~LMP_HOST_SSP;
503 }
504
505 if (hci_dev_test_flag(hdev, HCI_MGMT))
506 mgmt_ssp_enable_complete(hdev, sent->mode, status);
507 else if (!status) {
508 if (sent->mode)
509 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
510 else
511 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
512 }
513
514 hci_dev_unlock(hdev);
515 }
516
517 static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
518 {
519 u8 status = *((u8 *) skb->data);
520 struct hci_cp_write_sc_support *sent;
521
522 BT_DBG("%s status 0x%2.2x", hdev->name, status);
523
524 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
525 if (!sent)
526 return;
527
528 hci_dev_lock(hdev);
529
530 if (!status) {
531 if (sent->support)
532 hdev->features[1][0] |= LMP_HOST_SC;
533 else
534 hdev->features[1][0] &= ~LMP_HOST_SC;
535 }
536
537 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
538 if (sent->support)
539 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
540 else
541 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
542 }
543
544 hci_dev_unlock(hdev);
545 }
546
547 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
548 {
549 struct hci_rp_read_local_version *rp = (void *) skb->data;
550
551 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
552
553 if (rp->status)
554 return;
555
556 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
557 hci_dev_test_flag(hdev, HCI_CONFIG)) {
558 hdev->hci_ver = rp->hci_ver;
559 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
560 hdev->lmp_ver = rp->lmp_ver;
561 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
562 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
563 }
564 }
565
566 static void hci_cc_read_local_commands(struct hci_dev *hdev,
567 struct sk_buff *skb)
568 {
569 struct hci_rp_read_local_commands *rp = (void *) skb->data;
570
571 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
572
573 if (rp->status)
574 return;
575
576 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
577 hci_dev_test_flag(hdev, HCI_CONFIG))
578 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
579 }
580
581 static void hci_cc_read_local_features(struct hci_dev *hdev,
582 struct sk_buff *skb)
583 {
584 struct hci_rp_read_local_features *rp = (void *) skb->data;
585
586 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
587
588 if (rp->status)
589 return;
590
591 memcpy(hdev->features, rp->features, 8);
592
593 /* Adjust default settings according to features
594 * supported by device. */
595
596 if (hdev->features[0][0] & LMP_3SLOT)
597 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
598
599 if (hdev->features[0][0] & LMP_5SLOT)
600 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
601
602 if (hdev->features[0][1] & LMP_HV2) {
603 hdev->pkt_type |= (HCI_HV2);
604 hdev->esco_type |= (ESCO_HV2);
605 }
606
607 if (hdev->features[0][1] & LMP_HV3) {
608 hdev->pkt_type |= (HCI_HV3);
609 hdev->esco_type |= (ESCO_HV3);
610 }
611
612 if (lmp_esco_capable(hdev))
613 hdev->esco_type |= (ESCO_EV3);
614
615 if (hdev->features[0][4] & LMP_EV4)
616 hdev->esco_type |= (ESCO_EV4);
617
618 if (hdev->features[0][4] & LMP_EV5)
619 hdev->esco_type |= (ESCO_EV5);
620
621 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
622 hdev->esco_type |= (ESCO_2EV3);
623
624 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
625 hdev->esco_type |= (ESCO_3EV3);
626
627 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
628 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
629 }
630
631 static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
632 struct sk_buff *skb)
633 {
634 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
635
636 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
637
638 if (rp->status)
639 return;
640
641 if (hdev->max_page < rp->max_page)
642 hdev->max_page = rp->max_page;
643
644 if (rp->page < HCI_MAX_PAGES)
645 memcpy(hdev->features[rp->page], rp->features, 8);
646 }
647
648 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
649 struct sk_buff *skb)
650 {
651 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
652
653 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
654
655 if (rp->status)
656 return;
657
658 hdev->flow_ctl_mode = rp->mode;
659 }
660
661 static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
662 {
663 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
664
665 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
666
667 if (rp->status)
668 return;
669
670 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
671 hdev->sco_mtu = rp->sco_mtu;
672 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
673 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
674
675 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
676 hdev->sco_mtu = 64;
677 hdev->sco_pkts = 8;
678 }
679
680 hdev->acl_cnt = hdev->acl_pkts;
681 hdev->sco_cnt = hdev->sco_pkts;
682
683 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
684 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
685 }
686
687 static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
688 {
689 struct hci_rp_read_bd_addr *rp = (void *) skb->data;
690
691 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
692
693 if (rp->status)
694 return;
695
696 if (test_bit(HCI_INIT, &hdev->flags))
697 bacpy(&hdev->bdaddr, &rp->bdaddr);
698
699 if (hci_dev_test_flag(hdev, HCI_SETUP))
700 bacpy(&hdev->setup_addr, &rp->bdaddr);
701 }
702
703 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
704 struct sk_buff *skb)
705 {
706 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;
707
708 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
709
710 if (rp->status)
711 return;
712
713 if (test_bit(HCI_INIT, &hdev->flags)) {
714 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
715 hdev->page_scan_window = __le16_to_cpu(rp->window);
716 }
717 }
718
719 static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
720 struct sk_buff *skb)
721 {
722 u8 status = *((u8 *) skb->data);
723 struct hci_cp_write_page_scan_activity *sent;
724
725 BT_DBG("%s status 0x%2.2x", hdev->name, status);
726
727 if (status)
728 return;
729
730 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
731 if (!sent)
732 return;
733
734 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
735 hdev->page_scan_window = __le16_to_cpu(sent->window);
736 }
737
738 static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
739 struct sk_buff *skb)
740 {
741 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
742
743 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
744
745 if (rp->status)
746 return;
747
748 if (test_bit(HCI_INIT, &hdev->flags))
749 hdev->page_scan_type = rp->type;
750 }
751
752 static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
753 struct sk_buff *skb)
754 {
755 u8 status = *((u8 *) skb->data);
756 u8 *type;
757
758 BT_DBG("%s status 0x%2.2x", hdev->name, status);
759
760 if (status)
761 return;
762
763 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
764 if (type)
765 hdev->page_scan_type = *type;
766 }
767
768 static void hci_cc_read_data_block_size(struct hci_dev *hdev,
769 struct sk_buff *skb)
770 {
771 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
772
773 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
774
775 if (rp->status)
776 return;
777
778 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
779 hdev->block_len = __le16_to_cpu(rp->block_len);
780 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
781
782 hdev->block_cnt = hdev->num_blocks;
783
784 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
785 hdev->block_cnt, hdev->block_len);
786 }
787
788 static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
789 {
790 struct hci_rp_read_clock *rp = (void *) skb->data;
791 struct hci_cp_read_clock *cp;
792 struct hci_conn *conn;
793
794 BT_DBG("%s", hdev->name);
795
796 if (skb->len < sizeof(*rp))
797 return;
798
799 if (rp->status)
800 return;
801
802 hci_dev_lock(hdev);
803
804 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
805 if (!cp)
806 goto unlock;
807
808 if (cp->which == 0x00) {
809 hdev->clock = le32_to_cpu(rp->clock);
810 goto unlock;
811 }
812
813 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
814 if (conn) {
815 conn->clock = le32_to_cpu(rp->clock);
816 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
817 }
818
819 unlock:
820 hci_dev_unlock(hdev);
821 }
822
823 static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
824 struct sk_buff *skb)
825 {
826 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
827
828 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
829
830 if (rp->status)
831 return;
832
833 hdev->amp_status = rp->amp_status;
834 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
835 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
836 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
837 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
838 hdev->amp_type = rp->amp_type;
839 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
840 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
841 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
842 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
843 }
844
845 static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
846 struct sk_buff *skb)
847 {
848 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
849
850 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
851
852 if (rp->status)
853 return;
854
855 hdev->inq_tx_power = rp->tx_power;
856 }
857
858 static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
859 {
860 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
861 struct hci_cp_pin_code_reply *cp;
862 struct hci_conn *conn;
863
864 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
865
866 hci_dev_lock(hdev);
867
868 if (hci_dev_test_flag(hdev, HCI_MGMT))
869 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
870
871 if (rp->status)
872 goto unlock;
873
874 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
875 if (!cp)
876 goto unlock;
877
878 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
879 if (conn)
880 conn->pin_length = cp->pin_len;
881
882 unlock:
883 hci_dev_unlock(hdev);
884 }
885
886 static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
887 {
888 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
889
890 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
891
892 hci_dev_lock(hdev);
893
894 if (hci_dev_test_flag(hdev, HCI_MGMT))
895 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
896 rp->status);
897
898 hci_dev_unlock(hdev);
899 }
900
901 static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
902 struct sk_buff *skb)
903 {
904 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
905
906 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
907
908 if (rp->status)
909 return;
910
911 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
912 hdev->le_pkts = rp->le_max_pkt;
913
914 hdev->le_cnt = hdev->le_pkts;
915
916 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
917 }
918
919 static void hci_cc_le_read_local_features(struct hci_dev *hdev,
920 struct sk_buff *skb)
921 {
922 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
923
924 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
925
926 if (rp->status)
927 return;
928
929 memcpy(hdev->le_features, rp->features, 8);
930 }
931
932 static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
933 struct sk_buff *skb)
934 {
935 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
936
937 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
938
939 if (rp->status)
940 return;
941
942 hdev->adv_tx_power = rp->tx_power;
943 }
944
945 static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
946 {
947 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
948
949 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
950
951 hci_dev_lock(hdev);
952
953 if (hci_dev_test_flag(hdev, HCI_MGMT))
954 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
955 rp->status);
956
957 hci_dev_unlock(hdev);
958 }
959
960 static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
961 struct sk_buff *skb)
962 {
963 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
964
965 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
966
967 hci_dev_lock(hdev);
968
969 if (hci_dev_test_flag(hdev, HCI_MGMT))
970 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
971 ACL_LINK, 0, rp->status);
972
973 hci_dev_unlock(hdev);
974 }
975
976 static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
977 {
978 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
979
980 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
981
982 hci_dev_lock(hdev);
983
984 if (hci_dev_test_flag(hdev, HCI_MGMT))
985 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
986 0, rp->status);
987
988 hci_dev_unlock(hdev);
989 }
990
991 static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
992 struct sk_buff *skb)
993 {
994 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
995
996 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
997
998 hci_dev_lock(hdev);
999
1000 if (hci_dev_test_flag(hdev, HCI_MGMT))
1001 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1002 ACL_LINK, 0, rp->status);
1003
1004 hci_dev_unlock(hdev);
1005 }
1006
1007 static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
1008 struct sk_buff *skb)
1009 {
1010 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
1011
1012 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1013 }
1014
1015 static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
1016 struct sk_buff *skb)
1017 {
1018 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1019
1020 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1021 }
1022
1023 static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1024 {
1025 __u8 status = *((__u8 *) skb->data);
1026 bdaddr_t *sent;
1027
1028 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1029
1030 if (status)
1031 return;
1032
1033 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1034 if (!sent)
1035 return;
1036
1037 hci_dev_lock(hdev);
1038
1039 bacpy(&hdev->random_addr, sent);
1040
1041 hci_dev_unlock(hdev);
1042 }
1043
1044 static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1045 {
1046 __u8 *sent, status = *((__u8 *) skb->data);
1047
1048 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1049
1050 if (status)
1051 return;
1052
1053 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1054 if (!sent)
1055 return;
1056
1057 hci_dev_lock(hdev);
1058
1059 /* If we're doing connection initiation as peripheral. Set a
1060 * timeout in case something goes wrong.
1061 */
1062 if (*sent) {
1063 struct hci_conn *conn;
1064
1065 hci_dev_set_flag(hdev, HCI_LE_ADV);
1066
1067 conn = hci_lookup_le_connect(hdev);
1068 if (conn)
1069 queue_delayed_work(hdev->workqueue,
1070 &conn->le_conn_timeout,
1071 conn->conn_timeout);
1072 } else {
1073 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1074 }
1075
1076 hci_dev_unlock(hdev);
1077 }
1078
1079 static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1080 {
1081 struct hci_cp_le_set_scan_param *cp;
1082 __u8 status = *((__u8 *) skb->data);
1083
1084 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1085
1086 if (status)
1087 return;
1088
1089 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1090 if (!cp)
1091 return;
1092
1093 hci_dev_lock(hdev);
1094
1095 hdev->le_scan_type = cp->type;
1096
1097 hci_dev_unlock(hdev);
1098 }
1099
1100 static bool has_pending_adv_report(struct hci_dev *hdev)
1101 {
1102 struct discovery_state *d = &hdev->discovery;
1103
1104 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1105 }
1106
1107 static void clear_pending_adv_report(struct hci_dev *hdev)
1108 {
1109 struct discovery_state *d = &hdev->discovery;
1110
1111 bacpy(&d->last_adv_addr, BDADDR_ANY);
1112 d->last_adv_data_len = 0;
1113 }
1114
1115 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116 u8 bdaddr_type, s8 rssi, u32 flags,
1117 u8 *data, u8 len)
1118 {
1119 struct discovery_state *d = &hdev->discovery;
1120
1121 bacpy(&d->last_adv_addr, bdaddr);
1122 d->last_adv_addr_type = bdaddr_type;
1123 d->last_adv_rssi = rssi;
1124 d->last_adv_flags = flags;
1125 memcpy(d->last_adv_data, data, len);
1126 d->last_adv_data_len = len;
1127 }
1128
1129 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1130 struct sk_buff *skb)
1131 {
1132 struct hci_cp_le_set_scan_enable *cp;
1133 __u8 status = *((__u8 *) skb->data);
1134
1135 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1136
1137 if (status)
1138 return;
1139
1140 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1141 if (!cp)
1142 return;
1143
1144 hci_dev_lock(hdev);
1145
1146 switch (cp->enable) {
1147 case LE_SCAN_ENABLE:
1148 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1149 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1150 clear_pending_adv_report(hdev);
1151 break;
1152
1153 case LE_SCAN_DISABLE:
1154 /* We do this here instead of when setting DISCOVERY_STOPPED
1155 * since the latter would potentially require waiting for
1156 * inquiry to stop too.
1157 */
1158 if (has_pending_adv_report(hdev)) {
1159 struct discovery_state *d = &hdev->discovery;
1160
1161 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1162 d->last_adv_addr_type, NULL,
1163 d->last_adv_rssi, d->last_adv_flags,
1164 d->last_adv_data,
1165 d->last_adv_data_len, NULL, 0);
1166 }
1167
1168 /* Cancel this timer so that we don't try to disable scanning
1169 * when it's already disabled.
1170 */
1171 cancel_delayed_work(&hdev->le_scan_disable);
1172
1173 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1174
1175 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1176 * interrupted scanning due to a connect request. Mark
1177 * therefore discovery as stopped. If this was not
1178 * because of a connect request advertising might have
1179 * been disabled because of active scanning, so
1180 * re-enable it again if necessary.
1181 */
1182 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1183 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1184 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1185 hdev->discovery.state == DISCOVERY_FINDING)
1186 hci_req_reenable_advertising(hdev);
1187
1188 break;
1189
1190 default:
1191 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1192 cp->enable);
1193 break;
1194 }
1195
1196 hci_dev_unlock(hdev);
1197 }
1198
1199 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1200 struct sk_buff *skb)
1201 {
1202 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1203
1204 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1205
1206 if (rp->status)
1207 return;
1208
1209 hdev->le_white_list_size = rp->size;
1210 }
1211
1212 static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1213 struct sk_buff *skb)
1214 {
1215 __u8 status = *((__u8 *) skb->data);
1216
1217 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1218
1219 if (status)
1220 return;
1221
1222 hci_bdaddr_list_clear(&hdev->le_white_list);
1223 }
1224
1225 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1226 struct sk_buff *skb)
1227 {
1228 struct hci_cp_le_add_to_white_list *sent;
1229 __u8 status = *((__u8 *) skb->data);
1230
1231 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1232
1233 if (status)
1234 return;
1235
1236 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1237 if (!sent)
1238 return;
1239
1240 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1241 sent->bdaddr_type);
1242 }
1243
1244 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1245 struct sk_buff *skb)
1246 {
1247 struct hci_cp_le_del_from_white_list *sent;
1248 __u8 status = *((__u8 *) skb->data);
1249
1250 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1251
1252 if (status)
1253 return;
1254
1255 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1256 if (!sent)
1257 return;
1258
1259 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1260 sent->bdaddr_type);
1261 }
1262
1263 static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1264 struct sk_buff *skb)
1265 {
1266 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1267
1268 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1269
1270 if (rp->status)
1271 return;
1272
1273 memcpy(hdev->le_states, rp->le_states, 8);
1274 }
1275
1276 static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1277 struct sk_buff *skb)
1278 {
1279 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1280
1281 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1282
1283 if (rp->status)
1284 return;
1285
1286 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1287 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1288 }
1289
1290 static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1291 struct sk_buff *skb)
1292 {
1293 struct hci_cp_le_write_def_data_len *sent;
1294 __u8 status = *((__u8 *) skb->data);
1295
1296 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1297
1298 if (status)
1299 return;
1300
1301 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1302 if (!sent)
1303 return;
1304
1305 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1306 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1307 }
1308
1309 static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1310 struct sk_buff *skb)
1311 {
1312 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1313
1314 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1315
1316 if (rp->status)
1317 return;
1318
1319 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1320 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1321 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1322 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1323 }
1324
1325 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1326 struct sk_buff *skb)
1327 {
1328 struct hci_cp_write_le_host_supported *sent;
1329 __u8 status = *((__u8 *) skb->data);
1330
1331 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1332
1333 if (status)
1334 return;
1335
1336 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1337 if (!sent)
1338 return;
1339
1340 hci_dev_lock(hdev);
1341
1342 if (sent->le) {
1343 hdev->features[1][0] |= LMP_HOST_LE;
1344 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1345 } else {
1346 hdev->features[1][0] &= ~LMP_HOST_LE;
1347 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
1348 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1349 }
1350
1351 if (sent->simul)
1352 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1353 else
1354 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1355
1356 hci_dev_unlock(hdev);
1357 }
1358
1359 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1360 {
1361 struct hci_cp_le_set_adv_param *cp;
1362 u8 status = *((u8 *) skb->data);
1363
1364 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1365
1366 if (status)
1367 return;
1368
1369 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1370 if (!cp)
1371 return;
1372
1373 hci_dev_lock(hdev);
1374 hdev->adv_addr_type = cp->own_address_type;
1375 hci_dev_unlock(hdev);
1376 }
1377
1378 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1379 {
1380 struct hci_rp_read_rssi *rp = (void *) skb->data;
1381 struct hci_conn *conn;
1382
1383 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1384
1385 if (rp->status)
1386 return;
1387
1388 hci_dev_lock(hdev);
1389
1390 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1391 if (conn)
1392 conn->rssi = rp->rssi;
1393
1394 hci_dev_unlock(hdev);
1395 }
1396
1397 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1398 {
1399 struct hci_cp_read_tx_power *sent;
1400 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1401 struct hci_conn *conn;
1402
1403 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1404
1405 if (rp->status)
1406 return;
1407
1408 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1409 if (!sent)
1410 return;
1411
1412 hci_dev_lock(hdev);
1413
1414 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1415 if (!conn)
1416 goto unlock;
1417
1418 switch (sent->type) {
1419 case 0x00:
1420 conn->tx_power = rp->tx_power;
1421 break;
1422 case 0x01:
1423 conn->max_tx_power = rp->tx_power;
1424 break;
1425 }
1426
1427 unlock:
1428 hci_dev_unlock(hdev);
1429 }
1430
1431 static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
1432 {
1433 u8 status = *((u8 *) skb->data);
1434 u8 *mode;
1435
1436 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1437
1438 if (status)
1439 return;
1440
1441 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
1442 if (mode)
1443 hdev->ssp_debug_mode = *mode;
1444 }
1445
1446 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1447 {
1448 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1449
1450 if (status) {
1451 hci_conn_check_pending(hdev);
1452 return;
1453 }
1454
1455 set_bit(HCI_INQUIRY, &hdev->flags);
1456 }
1457
1458 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1459 {
1460 struct hci_cp_create_conn *cp;
1461 struct hci_conn *conn;
1462
1463 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1464
1465 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1466 if (!cp)
1467 return;
1468
1469 hci_dev_lock(hdev);
1470
1471 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1472
1473 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1474
1475 if (status) {
1476 if (conn && conn->state == BT_CONNECT) {
1477 if (status != 0x0c || conn->attempt > 2) {
1478 conn->state = BT_CLOSED;
1479 hci_connect_cfm(conn, status);
1480 hci_conn_del(conn);
1481 } else
1482 conn->state = BT_CONNECT2;
1483 }
1484 } else {
1485 if (!conn) {
1486 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1487 HCI_ROLE_MASTER);
1488 if (!conn)
1489 bt_dev_err(hdev, "no memory for new connection");
1490 }
1491 }
1492
1493 hci_dev_unlock(hdev);
1494 }
1495
1496 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1497 {
1498 struct hci_cp_add_sco *cp;
1499 struct hci_conn *acl, *sco;
1500 __u16 handle;
1501
1502 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1503
1504 if (!status)
1505 return;
1506
1507 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1508 if (!cp)
1509 return;
1510
1511 handle = __le16_to_cpu(cp->handle);
1512
1513 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1514
1515 hci_dev_lock(hdev);
1516
1517 acl = hci_conn_hash_lookup_handle(hdev, handle);
1518 if (acl) {
1519 sco = acl->link;
1520 if (sco) {
1521 sco->state = BT_CLOSED;
1522
1523 hci_connect_cfm(sco, status);
1524 hci_conn_del(sco);
1525 }
1526 }
1527
1528 hci_dev_unlock(hdev);
1529 }
1530
1531 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1532 {
1533 struct hci_cp_auth_requested *cp;
1534 struct hci_conn *conn;
1535
1536 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1537
1538 if (!status)
1539 return;
1540
1541 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1542 if (!cp)
1543 return;
1544
1545 hci_dev_lock(hdev);
1546
1547 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1548 if (conn) {
1549 if (conn->state == BT_CONFIG) {
1550 hci_connect_cfm(conn, status);
1551 hci_conn_drop(conn);
1552 }
1553 }
1554
1555 hci_dev_unlock(hdev);
1556 }
1557
1558 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1559 {
1560 struct hci_cp_set_conn_encrypt *cp;
1561 struct hci_conn *conn;
1562
1563 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1564
1565 if (!status)
1566 return;
1567
1568 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1569 if (!cp)
1570 return;
1571
1572 hci_dev_lock(hdev);
1573
1574 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1575 if (conn) {
1576 if (conn->state == BT_CONFIG) {
1577 hci_connect_cfm(conn, status);
1578 hci_conn_drop(conn);
1579 }
1580 }
1581
1582 hci_dev_unlock(hdev);
1583 }
1584
1585 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1586 struct hci_conn *conn)
1587 {
1588 if (conn->state != BT_CONFIG || !conn->out)
1589 return 0;
1590
1591 if (conn->pending_sec_level == BT_SECURITY_SDP)
1592 return 0;
1593
1594 /* Only request authentication for SSP connections or non-SSP
1595 * devices with sec_level MEDIUM or HIGH or if MITM protection
1596 * is requested.
1597 */
1598 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1599 conn->pending_sec_level != BT_SECURITY_FIPS &&
1600 conn->pending_sec_level != BT_SECURITY_HIGH &&
1601 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1602 return 0;
1603
1604 return 1;
1605 }
1606
1607 static int hci_resolve_name(struct hci_dev *hdev,
1608 struct inquiry_entry *e)
1609 {
1610 struct hci_cp_remote_name_req cp;
1611
1612 memset(&cp, 0, sizeof(cp));
1613
1614 bacpy(&cp.bdaddr, &e->data.bdaddr);
1615 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1616 cp.pscan_mode = e->data.pscan_mode;
1617 cp.clock_offset = e->data.clock_offset;
1618
1619 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1620 }
1621
1622 static bool hci_resolve_next_name(struct hci_dev *hdev)
1623 {
1624 struct discovery_state *discov = &hdev->discovery;
1625 struct inquiry_entry *e;
1626
1627 if (list_empty(&discov->resolve))
1628 return false;
1629
1630 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1631 if (!e)
1632 return false;
1633
1634 if (hci_resolve_name(hdev, e) == 0) {
1635 e->name_state = NAME_PENDING;
1636 return true;
1637 }
1638
1639 return false;
1640 }
1641
1642 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1643 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1644 {
1645 struct discovery_state *discov = &hdev->discovery;
1646 struct inquiry_entry *e;
1647
1648 /* Update the mgmt connected state if necessary. Be careful with
1649 * conn objects that exist but are not (yet) connected however.
1650 * Only those in BT_CONFIG or BT_CONNECTED states can be
1651 * considered connected.
1652 */
1653 if (conn &&
1654 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1655 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1656 mgmt_device_connected(hdev, conn, 0, name, name_len);
1657
1658 if (discov->state == DISCOVERY_STOPPED)
1659 return;
1660
1661 if (discov->state == DISCOVERY_STOPPING)
1662 goto discov_complete;
1663
1664 if (discov->state != DISCOVERY_RESOLVING)
1665 return;
1666
1667 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1668 /* If the device was not found in a list of found devices names of which
1669 * are pending. there is no need to continue resolving a next name as it
1670 * will be done upon receiving another Remote Name Request Complete
1671 * Event */
1672 if (!e)
1673 return;
1674
1675 list_del(&e->list);
1676 if (name) {
1677 e->name_state = NAME_KNOWN;
1678 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1679 e->data.rssi, name, name_len);
1680 } else {
1681 e->name_state = NAME_NOT_KNOWN;
1682 }
1683
1684 if (hci_resolve_next_name(hdev))
1685 return;
1686
1687 discov_complete:
1688 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1689 }
1690
1691 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
1692 {
1693 struct hci_cp_remote_name_req *cp;
1694 struct hci_conn *conn;
1695
1696 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1697
1698 /* If successful wait for the name req complete event before
1699 * checking for the need to do authentication */
1700 if (!status)
1701 return;
1702
1703 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
1704 if (!cp)
1705 return;
1706
1707 hci_dev_lock(hdev);
1708
1709 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1710
1711 if (hci_dev_test_flag(hdev, HCI_MGMT))
1712 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1713
1714 if (!conn)
1715 goto unlock;
1716
1717 if (!hci_outgoing_auth_needed(hdev, conn))
1718 goto unlock;
1719
1720 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1721 struct hci_cp_auth_requested auth_cp;
1722
1723 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
1724
1725 auth_cp.handle = __cpu_to_le16(conn->handle);
1726 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
1727 sizeof(auth_cp), &auth_cp);
1728 }
1729
1730 unlock:
1731 hci_dev_unlock(hdev);
1732 }
1733
1734 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
1735 {
1736 struct hci_cp_read_remote_features *cp;
1737 struct hci_conn *conn;
1738
1739 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1740
1741 if (!status)
1742 return;
1743
1744 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
1745 if (!cp)
1746 return;
1747
1748 hci_dev_lock(hdev);
1749
1750 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1751 if (conn) {
1752 if (conn->state == BT_CONFIG) {
1753 hci_connect_cfm(conn, status);
1754 hci_conn_drop(conn);
1755 }
1756 }
1757
1758 hci_dev_unlock(hdev);
1759 }
1760
1761 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
1762 {
1763 struct hci_cp_read_remote_ext_features *cp;
1764 struct hci_conn *conn;
1765
1766 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1767
1768 if (!status)
1769 return;
1770
1771 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
1772 if (!cp)
1773 return;
1774
1775 hci_dev_lock(hdev);
1776
1777 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1778 if (conn) {
1779 if (conn->state == BT_CONFIG) {
1780 hci_connect_cfm(conn, status);
1781 hci_conn_drop(conn);
1782 }
1783 }
1784
1785 hci_dev_unlock(hdev);
1786 }
1787
1788 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
1789 {
1790 struct hci_cp_setup_sync_conn *cp;
1791 struct hci_conn *acl, *sco;
1792 __u16 handle;
1793
1794 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1795
1796 if (!status)
1797 return;
1798
1799 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
1800 if (!cp)
1801 return;
1802
1803 handle = __le16_to_cpu(cp->handle);
1804
1805 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1806
1807 hci_dev_lock(hdev);
1808
1809 acl = hci_conn_hash_lookup_handle(hdev, handle);
1810 if (acl) {
1811 sco = acl->link;
1812 if (sco) {
1813 sco->state = BT_CLOSED;
1814
1815 hci_connect_cfm(sco, status);
1816 hci_conn_del(sco);
1817 }
1818 }
1819
1820 hci_dev_unlock(hdev);
1821 }
1822
1823 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
1824 {
1825 struct hci_cp_sniff_mode *cp;
1826 struct hci_conn *conn;
1827
1828 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1829
1830 if (!status)
1831 return;
1832
1833 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
1834 if (!cp)
1835 return;
1836
1837 hci_dev_lock(hdev);
1838
1839 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1840 if (conn) {
1841 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1842
1843 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1844 hci_sco_setup(conn, status);
1845 }
1846
1847 hci_dev_unlock(hdev);
1848 }
1849
1850 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
1851 {
1852 struct hci_cp_exit_sniff_mode *cp;
1853 struct hci_conn *conn;
1854
1855 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1856
1857 if (!status)
1858 return;
1859
1860 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
1861 if (!cp)
1862 return;
1863
1864 hci_dev_lock(hdev);
1865
1866 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1867 if (conn) {
1868 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1869
1870 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1871 hci_sco_setup(conn, status);
1872 }
1873
1874 hci_dev_unlock(hdev);
1875 }
1876
1877 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
1878 {
1879 struct hci_cp_disconnect *cp;
1880 struct hci_conn *conn;
1881
1882 if (!status)
1883 return;
1884
1885 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
1886 if (!cp)
1887 return;
1888
1889 hci_dev_lock(hdev);
1890
1891 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1892 if (conn)
1893 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1894 conn->dst_type, status);
1895
1896 hci_dev_unlock(hdev);
1897 }
1898
1899 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
1900 {
1901 struct hci_cp_le_create_conn *cp;
1902 struct hci_conn *conn;
1903
1904 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1905
1906 /* All connection failure handling is taken care of by the
1907 * hci_le_conn_failed function which is triggered by the HCI
1908 * request completion callbacks used for connecting.
1909 */
1910 if (status)
1911 return;
1912
1913 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
1914 if (!cp)
1915 return;
1916
1917 hci_dev_lock(hdev);
1918
1919 conn = hci_conn_hash_lookup_le(hdev, &cp->peer_addr,
1920 cp->peer_addr_type);
1921 if (!conn)
1922 goto unlock;
1923
1924 /* Store the initiator and responder address information which
1925 * is needed for SMP. These values will not change during the
1926 * lifetime of the connection.
1927 */
1928 conn->init_addr_type = cp->own_address_type;
1929 if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
1930 bacpy(&conn->init_addr, &hdev->random_addr);
1931 else
1932 bacpy(&conn->init_addr, &hdev->bdaddr);
1933
1934 conn->resp_addr_type = cp->peer_addr_type;
1935 bacpy(&conn->resp_addr, &cp->peer_addr);
1936
1937 /* We don't want the connection attempt to stick around
1938 * indefinitely since LE doesn't have a page timeout concept
1939 * like BR/EDR. Set a timer for any connection that doesn't use
1940 * the white list for connecting.
1941 */
1942 if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
1943 queue_delayed_work(conn->hdev->workqueue,
1944 &conn->le_conn_timeout,
1945 conn->conn_timeout);
1946
1947 unlock:
1948 hci_dev_unlock(hdev);
1949 }
1950
1951 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
1952 {
1953 struct hci_cp_le_read_remote_features *cp;
1954 struct hci_conn *conn;
1955
1956 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1957
1958 if (!status)
1959 return;
1960
1961 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
1962 if (!cp)
1963 return;
1964
1965 hci_dev_lock(hdev);
1966
1967 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1968 if (conn) {
1969 if (conn->state == BT_CONFIG) {
1970 hci_connect_cfm(conn, status);
1971 hci_conn_drop(conn);
1972 }
1973 }
1974
1975 hci_dev_unlock(hdev);
1976 }
1977
1978 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
1979 {
1980 struct hci_cp_le_start_enc *cp;
1981 struct hci_conn *conn;
1982
1983 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1984
1985 if (!status)
1986 return;
1987
1988 hci_dev_lock(hdev);
1989
1990 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
1991 if (!cp)
1992 goto unlock;
1993
1994 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1995 if (!conn)
1996 goto unlock;
1997
1998 if (conn->state != BT_CONNECTED)
1999 goto unlock;
2000
2001 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2002 hci_conn_drop(conn);
2003
2004 unlock:
2005 hci_dev_unlock(hdev);
2006 }
2007
2008 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2009 {
2010 struct hci_cp_switch_role *cp;
2011 struct hci_conn *conn;
2012
2013 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2014
2015 if (!status)
2016 return;
2017
2018 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2019 if (!cp)
2020 return;
2021
2022 hci_dev_lock(hdev);
2023
2024 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2025 if (conn)
2026 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2027
2028 hci_dev_unlock(hdev);
2029 }
2030
2031 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2032 {
2033 __u8 status = *((__u8 *) skb->data);
2034 struct discovery_state *discov = &hdev->discovery;
2035 struct inquiry_entry *e;
2036
2037 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2038
2039 hci_conn_check_pending(hdev);
2040
2041 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2042 return;
2043
2044 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2045 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2046
2047 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2048 return;
2049
2050 hci_dev_lock(hdev);
2051
2052 if (discov->state != DISCOVERY_FINDING)
2053 goto unlock;
2054
2055 if (list_empty(&discov->resolve)) {
2056 /* When BR/EDR inquiry is active and no LE scanning is in
2057 * progress, then change discovery state to indicate completion.
2058 *
2059 * When running LE scanning and BR/EDR inquiry simultaneously
2060 * and the LE scan already finished, then change the discovery
2061 * state to indicate completion.
2062 */
2063 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2064 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2065 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2066 goto unlock;
2067 }
2068
2069 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2070 if (e && hci_resolve_name(hdev, e) == 0) {
2071 e->name_state = NAME_PENDING;
2072 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2073 } else {
2074 /* When BR/EDR inquiry is active and no LE scanning is in
2075 * progress, then change discovery state to indicate completion.
2076 *
2077 * When running LE scanning and BR/EDR inquiry simultaneously
2078 * and the LE scan already finished, then change the discovery
2079 * state to indicate completion.
2080 */
2081 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2082 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2083 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2084 }
2085
2086 unlock:
2087 hci_dev_unlock(hdev);
2088 }
2089
2090 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2091 {
2092 struct inquiry_data data;
2093 struct inquiry_info *info = (void *) (skb->data + 1);
2094 int num_rsp = *((__u8 *) skb->data);
2095
2096 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2097
2098 if (!num_rsp)
2099 return;
2100
2101 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2102 return;
2103
2104 hci_dev_lock(hdev);
2105
2106 for (; num_rsp; num_rsp--, info++) {
2107 u32 flags;
2108
2109 bacpy(&data.bdaddr, &info->bdaddr);
2110 data.pscan_rep_mode = info->pscan_rep_mode;
2111 data.pscan_period_mode = info->pscan_period_mode;
2112 data.pscan_mode = info->pscan_mode;
2113 memcpy(data.dev_class, info->dev_class, 3);
2114 data.clock_offset = info->clock_offset;
2115 data.rssi = HCI_RSSI_INVALID;
2116 data.ssp_mode = 0x00;
2117
2118 flags = hci_inquiry_cache_update(hdev, &data, false);
2119
2120 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2121 info->dev_class, HCI_RSSI_INVALID,
2122 flags, NULL, 0, NULL, 0);
2123 }
2124
2125 hci_dev_unlock(hdev);
2126 }
2127
2128 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2129 {
2130 struct hci_ev_conn_complete *ev = (void *) skb->data;
2131 struct hci_conn *conn;
2132
2133 BT_DBG("%s", hdev->name);
2134
2135 hci_dev_lock(hdev);
2136
2137 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2138 if (!conn) {
2139 if (ev->link_type != SCO_LINK)
2140 goto unlock;
2141
2142 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2143 if (!conn)
2144 goto unlock;
2145
2146 conn->type = SCO_LINK;
2147 }
2148
2149 if (!ev->status) {
2150 conn->handle = __le16_to_cpu(ev->handle);
2151
2152 if (conn->type == ACL_LINK) {
2153 conn->state = BT_CONFIG;
2154 hci_conn_hold(conn);
2155
2156 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2157 !hci_find_link_key(hdev, &ev->bdaddr))
2158 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2159 else
2160 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2161 } else
2162 conn->state = BT_CONNECTED;
2163
2164 hci_debugfs_create_conn(conn);
2165 hci_conn_add_sysfs(conn);
2166
2167 if (test_bit(HCI_AUTH, &hdev->flags))
2168 set_bit(HCI_CONN_AUTH, &conn->flags);
2169
2170 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2171 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2172
2173 /* Get remote features */
2174 if (conn->type == ACL_LINK) {
2175 struct hci_cp_read_remote_features cp;
2176 cp.handle = ev->handle;
2177 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2178 sizeof(cp), &cp);
2179
2180 hci_req_update_scan(hdev);
2181 }
2182
2183 /* Set packet type for incoming connection */
2184 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2185 struct hci_cp_change_conn_ptype cp;
2186 cp.handle = ev->handle;
2187 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2188 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2189 &cp);
2190 }
2191 } else {
2192 conn->state = BT_CLOSED;
2193 if (conn->type == ACL_LINK)
2194 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2195 conn->dst_type, ev->status);
2196 }
2197
2198 if (conn->type == ACL_LINK)
2199 hci_sco_setup(conn, ev->status);
2200
2201 if (ev->status) {
2202 hci_connect_cfm(conn, ev->status);
2203 hci_conn_del(conn);
2204 } else if (ev->link_type != ACL_LINK)
2205 hci_connect_cfm(conn, ev->status);
2206
2207 unlock:
2208 hci_dev_unlock(hdev);
2209
2210 hci_conn_check_pending(hdev);
2211 }
2212
2213 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2214 {
2215 struct hci_cp_reject_conn_req cp;
2216
2217 bacpy(&cp.bdaddr, bdaddr);
2218 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2219 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2220 }
2221
2222 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2223 {
2224 struct hci_ev_conn_request *ev = (void *) skb->data;
2225 int mask = hdev->link_mode;
2226 struct inquiry_entry *ie;
2227 struct hci_conn *conn;
2228 __u8 flags = 0;
2229
2230 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2231 ev->link_type);
2232
2233 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2234 &flags);
2235
2236 if (!(mask & HCI_LM_ACCEPT)) {
2237 hci_reject_conn(hdev, &ev->bdaddr);
2238 return;
2239 }
2240
2241 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2242 BDADDR_BREDR)) {
2243 hci_reject_conn(hdev, &ev->bdaddr);
2244 return;
2245 }
2246
2247 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2248 * connection. These features are only touched through mgmt so
2249 * only do the checks if HCI_MGMT is set.
2250 */
2251 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
2252 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2253 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2254 BDADDR_BREDR)) {
2255 hci_reject_conn(hdev, &ev->bdaddr);
2256 return;
2257 }
2258
2259 /* Connection accepted */
2260
2261 hci_dev_lock(hdev);
2262
2263 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2264 if (ie)
2265 memcpy(ie->data.dev_class, ev->dev_class, 3);
2266
2267 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2268 &ev->bdaddr);
2269 if (!conn) {
2270 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2271 HCI_ROLE_SLAVE);
2272 if (!conn) {
2273 bt_dev_err(hdev, "no memory for new connection");
2274 hci_dev_unlock(hdev);
2275 return;
2276 }
2277 }
2278
2279 memcpy(conn->dev_class, ev->dev_class, 3);
2280
2281 hci_dev_unlock(hdev);
2282
2283 if (ev->link_type == ACL_LINK ||
2284 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2285 struct hci_cp_accept_conn_req cp;
2286 conn->state = BT_CONNECT;
2287
2288 bacpy(&cp.bdaddr, &ev->bdaddr);
2289
2290 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2291 cp.role = 0x00; /* Become master */
2292 else
2293 cp.role = 0x01; /* Remain slave */
2294
2295 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2296 } else if (!(flags & HCI_PROTO_DEFER)) {
2297 struct hci_cp_accept_sync_conn_req cp;
2298 conn->state = BT_CONNECT;
2299
2300 bacpy(&cp.bdaddr, &ev->bdaddr);
2301 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2302
2303 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2304 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2305 cp.max_latency = cpu_to_le16(0xffff);
2306 cp.content_format = cpu_to_le16(hdev->voice_setting);
2307 cp.retrans_effort = 0xff;
2308
2309 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2310 &cp);
2311 } else {
2312 conn->state = BT_CONNECT2;
2313 hci_connect_cfm(conn, 0);
2314 }
2315 }
2316
2317 static u8 hci_to_mgmt_reason(u8 err)
2318 {
2319 switch (err) {
2320 case HCI_ERROR_CONNECTION_TIMEOUT:
2321 return MGMT_DEV_DISCONN_TIMEOUT;
2322 case HCI_ERROR_REMOTE_USER_TERM:
2323 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2324 case HCI_ERROR_REMOTE_POWER_OFF:
2325 return MGMT_DEV_DISCONN_REMOTE;
2326 case HCI_ERROR_LOCAL_HOST_TERM:
2327 return MGMT_DEV_DISCONN_LOCAL_HOST;
2328 default:
2329 return MGMT_DEV_DISCONN_UNKNOWN;
2330 }
2331 }
2332
2333 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2334 {
2335 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2336 u8 reason;
2337 struct hci_conn_params *params;
2338 struct hci_conn *conn;
2339 bool mgmt_connected;
2340 u8 type;
2341
2342 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2343
2344 hci_dev_lock(hdev);
2345
2346 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2347 if (!conn)
2348 goto unlock;
2349
2350 if (ev->status) {
2351 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2352 conn->dst_type, ev->status);
2353 goto unlock;
2354 }
2355
2356 conn->state = BT_CLOSED;
2357
2358 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2359
2360 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
2361 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
2362 else
2363 reason = hci_to_mgmt_reason(ev->reason);
2364
2365 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2366 reason, mgmt_connected);
2367
2368 if (conn->type == ACL_LINK) {
2369 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2370 hci_remove_link_key(hdev, &conn->dst);
2371
2372 hci_req_update_scan(hdev);
2373 }
2374
2375 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2376 if (params) {
2377 switch (params->auto_connect) {
2378 case HCI_AUTO_CONN_LINK_LOSS:
2379 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2380 break;
2381 /* Fall through */
2382
2383 case HCI_AUTO_CONN_DIRECT:
2384 case HCI_AUTO_CONN_ALWAYS:
2385 list_del_init(&params->action);
2386 list_add(&params->action, &hdev->pend_le_conns);
2387 hci_update_background_scan(hdev);
2388 break;
2389
2390 default:
2391 break;
2392 }
2393 }
2394
2395 type = conn->type;
2396
2397 hci_disconn_cfm(conn, ev->reason);
2398 hci_conn_del(conn);
2399
2400 /* Re-enable advertising if necessary, since it might
2401 * have been disabled by the connection. From the
2402 * HCI_LE_Set_Advertise_Enable command description in
2403 * the core specification (v4.0):
2404 * "The Controller shall continue advertising until the Host
2405 * issues an LE_Set_Advertise_Enable command with
2406 * Advertising_Enable set to 0x00 (Advertising is disabled)
2407 * or until a connection is created or until the Advertising
2408 * is timed out due to Directed Advertising."
2409 */
2410 if (type == LE_LINK)
2411 hci_req_reenable_advertising(hdev);
2412
2413 unlock:
2414 hci_dev_unlock(hdev);
2415 }
2416
2417 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2418 {
2419 struct hci_ev_auth_complete *ev = (void *) skb->data;
2420 struct hci_conn *conn;
2421
2422 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2423
2424 hci_dev_lock(hdev);
2425
2426 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2427 if (!conn)
2428 goto unlock;
2429
2430 if (!ev->status) {
2431 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2432
2433 if (!hci_conn_ssp_enabled(conn) &&
2434 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2435 bt_dev_info(hdev, "re-auth of legacy device is not possible.");
2436 } else {
2437 set_bit(HCI_CONN_AUTH, &conn->flags);
2438 conn->sec_level = conn->pending_sec_level;
2439 }
2440 } else {
2441 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2442 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2443
2444 mgmt_auth_failed(conn, ev->status);
2445 }
2446
2447 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2448 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2449
2450 if (conn->state == BT_CONFIG) {
2451 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2452 struct hci_cp_set_conn_encrypt cp;
2453 cp.handle = ev->handle;
2454 cp.encrypt = 0x01;
2455 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2456 &cp);
2457 } else {
2458 conn->state = BT_CONNECTED;
2459 hci_connect_cfm(conn, ev->status);
2460 hci_conn_drop(conn);
2461 }
2462 } else {
2463 hci_auth_cfm(conn, ev->status);
2464
2465 hci_conn_hold(conn);
2466 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2467 hci_conn_drop(conn);
2468 }
2469
2470 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2471 if (!ev->status) {
2472 struct hci_cp_set_conn_encrypt cp;
2473 cp.handle = ev->handle;
2474 cp.encrypt = 0x01;
2475 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2476 &cp);
2477 } else {
2478 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2479 hci_encrypt_cfm(conn, ev->status, 0x00);
2480 }
2481 }
2482
2483 unlock:
2484 hci_dev_unlock(hdev);
2485 }
2486
2487 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2488 {
2489 struct hci_ev_remote_name *ev = (void *) skb->data;
2490 struct hci_conn *conn;
2491
2492 BT_DBG("%s", hdev->name);
2493
2494 hci_conn_check_pending(hdev);
2495
2496 hci_dev_lock(hdev);
2497
2498 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2499
2500 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2501 goto check_auth;
2502
2503 if (ev->status == 0)
2504 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2505 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2506 else
2507 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2508
2509 check_auth:
2510 if (!conn)
2511 goto unlock;
2512
2513 if (!hci_outgoing_auth_needed(hdev, conn))
2514 goto unlock;
2515
2516 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2517 struct hci_cp_auth_requested cp;
2518
2519 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2520
2521 cp.handle = __cpu_to_le16(conn->handle);
2522 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2523 }
2524
2525 unlock:
2526 hci_dev_unlock(hdev);
2527 }
2528
2529 static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
2530 u16 opcode, struct sk_buff *skb)
2531 {
2532 const struct hci_rp_read_enc_key_size *rp;
2533 struct hci_conn *conn;
2534 u16 handle;
2535
2536 BT_DBG("%s status 0x%02x", hdev->name, status);
2537
2538 if (!skb || skb->len < sizeof(*rp)) {
2539 bt_dev_err(hdev, "invalid read key size response");
2540 return;
2541 }
2542
2543 rp = (void *)skb->data;
2544 handle = le16_to_cpu(rp->handle);
2545
2546 hci_dev_lock(hdev);
2547
2548 conn = hci_conn_hash_lookup_handle(hdev, handle);
2549 if (!conn)
2550 goto unlock;
2551
2552 /* If we fail to read the encryption key size, assume maximum
2553 * (which is the same we do also when this HCI command isn't
2554 * supported.
2555 */
2556 if (rp->status) {
2557 bt_dev_err(hdev, "failed to read key size for handle %u",
2558 handle);
2559 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2560 } else {
2561 conn->enc_key_size = rp->key_size;
2562 }
2563
2564 if (conn->state == BT_CONFIG) {
2565 conn->state = BT_CONNECTED;
2566 hci_connect_cfm(conn, 0);
2567 hci_conn_drop(conn);
2568 } else {
2569 u8 encrypt;
2570
2571 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2572 encrypt = 0x00;
2573 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2574 encrypt = 0x02;
2575 else
2576 encrypt = 0x01;
2577
2578 hci_encrypt_cfm(conn, 0, encrypt);
2579 }
2580
2581 unlock:
2582 hci_dev_unlock(hdev);
2583 }
2584
2585 static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2586 {
2587 struct hci_ev_encrypt_change *ev = (void *) skb->data;
2588 struct hci_conn *conn;
2589
2590 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2591
2592 hci_dev_lock(hdev);
2593
2594 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2595 if (!conn)
2596 goto unlock;
2597
2598 if (!ev->status) {
2599 if (ev->encrypt) {
2600 /* Encryption implies authentication */
2601 set_bit(HCI_CONN_AUTH, &conn->flags);
2602 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2603 conn->sec_level = conn->pending_sec_level;
2604
2605 /* P-256 authentication key implies FIPS */
2606 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2607 set_bit(HCI_CONN_FIPS, &conn->flags);
2608
2609 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
2610 conn->type == LE_LINK)
2611 set_bit(HCI_CONN_AES_CCM, &conn->flags);
2612 } else {
2613 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2614 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
2615 }
2616 }
2617
2618 /* We should disregard the current RPA and generate a new one
2619 * whenever the encryption procedure fails.
2620 */
2621 if (ev->status && conn->type == LE_LINK)
2622 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
2623
2624 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2625
2626 if (ev->status && conn->state == BT_CONNECTED) {
2627 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2628 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2629
2630 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2631 hci_conn_drop(conn);
2632 goto unlock;
2633 }
2634
2635 /* In Secure Connections Only mode, do not allow any connections
2636 * that are not encrypted with AES-CCM using a P-256 authenticated
2637 * combination key.
2638 */
2639 if (hci_dev_test_flag(hdev, HCI_SC_ONLY) &&
2640 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
2641 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
2642 hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
2643 hci_conn_drop(conn);
2644 goto unlock;
2645 }
2646
2647 /* Try reading the encryption key size for encrypted ACL links */
2648 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
2649 struct hci_cp_read_enc_key_size cp;
2650 struct hci_request req;
2651
2652 /* Only send HCI_Read_Encryption_Key_Size if the
2653 * controller really supports it. If it doesn't, assume
2654 * the default size (16).
2655 */
2656 if (!(hdev->commands[20] & 0x10)) {
2657 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2658 goto notify;
2659 }
2660
2661 hci_req_init(&req, hdev);
2662
2663 cp.handle = cpu_to_le16(conn->handle);
2664 hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp);
2665
2666 if (hci_req_run_skb(&req, read_enc_key_size_complete)) {
2667 bt_dev_err(hdev, "sending read key size failed");
2668 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2669 goto notify;
2670 }
2671
2672 goto unlock;
2673 }
2674
2675 notify:
2676 if (conn->state == BT_CONFIG) {
2677 if (!ev->status)
2678 conn->state = BT_CONNECTED;
2679
2680 hci_connect_cfm(conn, ev->status);
2681 hci_conn_drop(conn);
2682 } else
2683 hci_encrypt_cfm(conn, ev->status, ev->encrypt);
2684
2685 unlock:
2686 hci_dev_unlock(hdev);
2687 }
2688
2689 static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
2690 struct sk_buff *skb)
2691 {
2692 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
2693 struct hci_conn *conn;
2694
2695 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2696
2697 hci_dev_lock(hdev);
2698
2699 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2700 if (conn) {
2701 if (!ev->status)
2702 set_bit(HCI_CONN_SECURE, &conn->flags);
2703
2704 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2705
2706 hci_key_change_cfm(conn, ev->status);
2707 }
2708
2709 hci_dev_unlock(hdev);
2710 }
2711
2712 static void hci_remote_features_evt(struct hci_dev *hdev,
2713 struct sk_buff *skb)
2714 {
2715 struct hci_ev_remote_features *ev = (void *) skb->data;
2716 struct hci_conn *conn;
2717
2718 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2719
2720 hci_dev_lock(hdev);
2721
2722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2723 if (!conn)
2724 goto unlock;
2725
2726 if (!ev->status)
2727 memcpy(conn->features[0], ev->features, 8);
2728
2729 if (conn->state != BT_CONFIG)
2730 goto unlock;
2731
2732 if (!ev->status && lmp_ext_feat_capable(hdev) &&
2733 lmp_ext_feat_capable(conn)) {
2734 struct hci_cp_read_remote_ext_features cp;
2735 cp.handle = ev->handle;
2736 cp.page = 0x01;
2737 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
2738 sizeof(cp), &cp);
2739 goto unlock;
2740 }
2741
2742 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
2743 struct hci_cp_remote_name_req cp;
2744 memset(&cp, 0, sizeof(cp));
2745 bacpy(&cp.bdaddr, &conn->dst);
2746 cp.pscan_rep_mode = 0x02;
2747 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2748 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2749 mgmt_device_connected(hdev, conn, 0, NULL, 0);
2750
2751 if (!hci_outgoing_auth_needed(hdev, conn)) {
2752 conn->state = BT_CONNECTED;
2753 hci_connect_cfm(conn, ev->status);
2754 hci_conn_drop(conn);
2755 }
2756
2757 unlock:
2758 hci_dev_unlock(hdev);
2759 }
2760
2761 static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
2762 u16 *opcode, u8 *status,
2763 hci_req_complete_t *req_complete,
2764 hci_req_complete_skb_t *req_complete_skb)
2765 {
2766 struct hci_ev_cmd_complete *ev = (void *) skb->data;
2767
2768 *opcode = __le16_to_cpu(ev->opcode);
2769 *status = skb->data[sizeof(*ev)];
2770
2771 skb_pull(skb, sizeof(*ev));
2772
2773 switch (*opcode) {
2774 case HCI_OP_INQUIRY_CANCEL:
2775 hci_cc_inquiry_cancel(hdev, skb);
2776 break;
2777
2778 case HCI_OP_PERIODIC_INQ:
2779 hci_cc_periodic_inq(hdev, skb);
2780 break;
2781
2782 case HCI_OP_EXIT_PERIODIC_INQ:
2783 hci_cc_exit_periodic_inq(hdev, skb);
2784 break;
2785
2786 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
2787 hci_cc_remote_name_req_cancel(hdev, skb);
2788 break;
2789
2790 case HCI_OP_ROLE_DISCOVERY:
2791 hci_cc_role_discovery(hdev, skb);
2792 break;
2793
2794 case HCI_OP_READ_LINK_POLICY:
2795 hci_cc_read_link_policy(hdev, skb);
2796 break;
2797
2798 case HCI_OP_WRITE_LINK_POLICY:
2799 hci_cc_write_link_policy(hdev, skb);
2800 break;
2801
2802 case HCI_OP_READ_DEF_LINK_POLICY:
2803 hci_cc_read_def_link_policy(hdev, skb);
2804 break;
2805
2806 case HCI_OP_WRITE_DEF_LINK_POLICY:
2807 hci_cc_write_def_link_policy(hdev, skb);
2808 break;
2809
2810 case HCI_OP_RESET:
2811 hci_cc_reset(hdev, skb);
2812 break;
2813
2814 case HCI_OP_READ_STORED_LINK_KEY:
2815 hci_cc_read_stored_link_key(hdev, skb);
2816 break;
2817
2818 case HCI_OP_DELETE_STORED_LINK_KEY:
2819 hci_cc_delete_stored_link_key(hdev, skb);
2820 break;
2821
2822 case HCI_OP_WRITE_LOCAL_NAME:
2823 hci_cc_write_local_name(hdev, skb);
2824 break;
2825
2826 case HCI_OP_READ_LOCAL_NAME:
2827 hci_cc_read_local_name(hdev, skb);
2828 break;
2829
2830 case HCI_OP_WRITE_AUTH_ENABLE:
2831 hci_cc_write_auth_enable(hdev, skb);
2832 break;
2833
2834 case HCI_OP_WRITE_ENCRYPT_MODE:
2835 hci_cc_write_encrypt_mode(hdev, skb);
2836 break;
2837
2838 case HCI_OP_WRITE_SCAN_ENABLE:
2839 hci_cc_write_scan_enable(hdev, skb);
2840 break;
2841
2842 case HCI_OP_READ_CLASS_OF_DEV:
2843 hci_cc_read_class_of_dev(hdev, skb);
2844 break;
2845
2846 case HCI_OP_WRITE_CLASS_OF_DEV:
2847 hci_cc_write_class_of_dev(hdev, skb);
2848 break;
2849
2850 case HCI_OP_READ_VOICE_SETTING:
2851 hci_cc_read_voice_setting(hdev, skb);
2852 break;
2853
2854 case HCI_OP_WRITE_VOICE_SETTING:
2855 hci_cc_write_voice_setting(hdev, skb);
2856 break;
2857
2858 case HCI_OP_READ_NUM_SUPPORTED_IAC:
2859 hci_cc_read_num_supported_iac(hdev, skb);
2860 break;
2861
2862 case HCI_OP_WRITE_SSP_MODE:
2863 hci_cc_write_ssp_mode(hdev, skb);
2864 break;
2865
2866 case HCI_OP_WRITE_SC_SUPPORT:
2867 hci_cc_write_sc_support(hdev, skb);
2868 break;
2869
2870 case HCI_OP_READ_LOCAL_VERSION:
2871 hci_cc_read_local_version(hdev, skb);
2872 break;
2873
2874 case HCI_OP_READ_LOCAL_COMMANDS:
2875 hci_cc_read_local_commands(hdev, skb);
2876 break;
2877
2878 case HCI_OP_READ_LOCAL_FEATURES:
2879 hci_cc_read_local_features(hdev, skb);
2880 break;
2881
2882 case HCI_OP_READ_LOCAL_EXT_FEATURES:
2883 hci_cc_read_local_ext_features(hdev, skb);
2884 break;
2885
2886 case HCI_OP_READ_BUFFER_SIZE:
2887 hci_cc_read_buffer_size(hdev, skb);
2888 break;
2889
2890 case HCI_OP_READ_BD_ADDR:
2891 hci_cc_read_bd_addr(hdev, skb);
2892 break;
2893
2894 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
2895 hci_cc_read_page_scan_activity(hdev, skb);
2896 break;
2897
2898 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
2899 hci_cc_write_page_scan_activity(hdev, skb);
2900 break;
2901
2902 case HCI_OP_READ_PAGE_SCAN_TYPE:
2903 hci_cc_read_page_scan_type(hdev, skb);
2904 break;
2905
2906 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
2907 hci_cc_write_page_scan_type(hdev, skb);
2908 break;
2909
2910 case HCI_OP_READ_DATA_BLOCK_SIZE:
2911 hci_cc_read_data_block_size(hdev, skb);
2912 break;
2913
2914 case HCI_OP_READ_FLOW_CONTROL_MODE:
2915 hci_cc_read_flow_control_mode(hdev, skb);
2916 break;
2917
2918 case HCI_OP_READ_LOCAL_AMP_INFO:
2919 hci_cc_read_local_amp_info(hdev, skb);
2920 break;
2921
2922 case HCI_OP_READ_CLOCK:
2923 hci_cc_read_clock(hdev, skb);
2924 break;
2925
2926 case HCI_OP_READ_INQ_RSP_TX_POWER:
2927 hci_cc_read_inq_rsp_tx_power(hdev, skb);
2928 break;
2929
2930 case HCI_OP_PIN_CODE_REPLY:
2931 hci_cc_pin_code_reply(hdev, skb);
2932 break;
2933
2934 case HCI_OP_PIN_CODE_NEG_REPLY:
2935 hci_cc_pin_code_neg_reply(hdev, skb);
2936 break;
2937
2938 case HCI_OP_READ_LOCAL_OOB_DATA:
2939 hci_cc_read_local_oob_data(hdev, skb);
2940 break;
2941
2942 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
2943 hci_cc_read_local_oob_ext_data(hdev, skb);
2944 break;
2945
2946 case HCI_OP_LE_READ_BUFFER_SIZE:
2947 hci_cc_le_read_buffer_size(hdev, skb);
2948 break;
2949
2950 case HCI_OP_LE_READ_LOCAL_FEATURES:
2951 hci_cc_le_read_local_features(hdev, skb);
2952 break;
2953
2954 case HCI_OP_LE_READ_ADV_TX_POWER:
2955 hci_cc_le_read_adv_tx_power(hdev, skb);
2956 break;
2957
2958 case HCI_OP_USER_CONFIRM_REPLY:
2959 hci_cc_user_confirm_reply(hdev, skb);
2960 break;
2961
2962 case HCI_OP_USER_CONFIRM_NEG_REPLY:
2963 hci_cc_user_confirm_neg_reply(hdev, skb);
2964 break;
2965
2966 case HCI_OP_USER_PASSKEY_REPLY:
2967 hci_cc_user_passkey_reply(hdev, skb);
2968 break;
2969
2970 case HCI_OP_USER_PASSKEY_NEG_REPLY:
2971 hci_cc_user_passkey_neg_reply(hdev, skb);
2972 break;
2973
2974 case HCI_OP_LE_SET_RANDOM_ADDR:
2975 hci_cc_le_set_random_addr(hdev, skb);
2976 break;
2977
2978 case HCI_OP_LE_SET_ADV_ENABLE:
2979 hci_cc_le_set_adv_enable(hdev, skb);
2980 break;
2981
2982 case HCI_OP_LE_SET_SCAN_PARAM:
2983 hci_cc_le_set_scan_param(hdev, skb);
2984 break;
2985
2986 case HCI_OP_LE_SET_SCAN_ENABLE:
2987 hci_cc_le_set_scan_enable(hdev, skb);
2988 break;
2989
2990 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
2991 hci_cc_le_read_white_list_size(hdev, skb);
2992 break;
2993
2994 case HCI_OP_LE_CLEAR_WHITE_LIST:
2995 hci_cc_le_clear_white_list(hdev, skb);
2996 break;
2997
2998 case HCI_OP_LE_ADD_TO_WHITE_LIST:
2999 hci_cc_le_add_to_white_list(hdev, skb);
3000 break;
3001
3002 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
3003 hci_cc_le_del_from_white_list(hdev, skb);
3004 break;
3005
3006 case HCI_OP_LE_READ_SUPPORTED_STATES:
3007 hci_cc_le_read_supported_states(hdev, skb);
3008 break;
3009
3010 case HCI_OP_LE_READ_DEF_DATA_LEN:
3011 hci_cc_le_read_def_data_len(hdev, skb);
3012 break;
3013
3014 case HCI_OP_LE_WRITE_DEF_DATA_LEN:
3015 hci_cc_le_write_def_data_len(hdev, skb);
3016 break;
3017
3018 case HCI_OP_LE_READ_MAX_DATA_LEN:
3019 hci_cc_le_read_max_data_len(hdev, skb);
3020 break;
3021
3022 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
3023 hci_cc_write_le_host_supported(hdev, skb);
3024 break;
3025
3026 case HCI_OP_LE_SET_ADV_PARAM:
3027 hci_cc_set_adv_param(hdev, skb);
3028 break;
3029
3030 case HCI_OP_READ_RSSI:
3031 hci_cc_read_rssi(hdev, skb);
3032 break;
3033
3034 case HCI_OP_READ_TX_POWER:
3035 hci_cc_read_tx_power(hdev, skb);
3036 break;
3037
3038 case HCI_OP_WRITE_SSP_DEBUG_MODE:
3039 hci_cc_write_ssp_debug_mode(hdev, skb);
3040 break;
3041
3042 default:
3043 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3044 break;
3045 }
3046
3047 if (*opcode != HCI_OP_NOP)
3048 cancel_delayed_work(&hdev->cmd_timer);
3049
3050 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3051 atomic_set(&hdev->cmd_cnt, 1);
3052
3053 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
3054 req_complete_skb);
3055
3056 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
3057 bt_dev_err(hdev,
3058 "unexpected event for opcode 0x%4.4x", *opcode);
3059 return;
3060 }
3061
3062 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3063 queue_work(hdev->workqueue, &hdev->cmd_work);
3064 }
3065
3066 static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
3067 u16 *opcode, u8 *status,
3068 hci_req_complete_t *req_complete,
3069 hci_req_complete_skb_t *req_complete_skb)
3070 {
3071 struct hci_ev_cmd_status *ev = (void *) skb->data;
3072
3073 skb_pull(skb, sizeof(*ev));
3074
3075 *opcode = __le16_to_cpu(ev->opcode);
3076 *status = ev->status;
3077
3078 switch (*opcode) {
3079 case HCI_OP_INQUIRY:
3080 hci_cs_inquiry(hdev, ev->status);
3081 break;
3082
3083 case HCI_OP_CREATE_CONN:
3084 hci_cs_create_conn(hdev, ev->status);
3085 break;
3086
3087 case HCI_OP_DISCONNECT:
3088 hci_cs_disconnect(hdev, ev->status);
3089 break;
3090
3091 case HCI_OP_ADD_SCO:
3092 hci_cs_add_sco(hdev, ev->status);
3093 break;
3094
3095 case HCI_OP_AUTH_REQUESTED:
3096 hci_cs_auth_requested(hdev, ev->status);
3097 break;
3098
3099 case HCI_OP_SET_CONN_ENCRYPT:
3100 hci_cs_set_conn_encrypt(hdev, ev->status);
3101 break;
3102
3103 case HCI_OP_REMOTE_NAME_REQ:
3104 hci_cs_remote_name_req(hdev, ev->status);
3105 break;
3106
3107 case HCI_OP_READ_REMOTE_FEATURES:
3108 hci_cs_read_remote_features(hdev, ev->status);
3109 break;
3110
3111 case HCI_OP_READ_REMOTE_EXT_FEATURES:
3112 hci_cs_read_remote_ext_features(hdev, ev->status);
3113 break;
3114
3115 case HCI_OP_SETUP_SYNC_CONN:
3116 hci_cs_setup_sync_conn(hdev, ev->status);
3117 break;
3118
3119 case HCI_OP_SNIFF_MODE:
3120 hci_cs_sniff_mode(hdev, ev->status);
3121 break;
3122
3123 case HCI_OP_EXIT_SNIFF_MODE:
3124 hci_cs_exit_sniff_mode(hdev, ev->status);
3125 break;
3126
3127 case HCI_OP_SWITCH_ROLE:
3128 hci_cs_switch_role(hdev, ev->status);
3129 break;
3130
3131 case HCI_OP_LE_CREATE_CONN:
3132 hci_cs_le_create_conn(hdev, ev->status);
3133 break;
3134
3135 case HCI_OP_LE_READ_REMOTE_FEATURES:
3136 hci_cs_le_read_remote_features(hdev, ev->status);
3137 break;
3138
3139 case HCI_OP_LE_START_ENC:
3140 hci_cs_le_start_enc(hdev, ev->status);
3141 break;
3142
3143 default:
3144 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3145 break;
3146 }
3147
3148 if (*opcode != HCI_OP_NOP)
3149 cancel_delayed_work(&hdev->cmd_timer);
3150
3151 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3152 atomic_set(&hdev->cmd_cnt, 1);
3153
3154 /* Indicate request completion if the command failed. Also, if
3155 * we're not waiting for a special event and we get a success
3156 * command status we should try to flag the request as completed
3157 * (since for this kind of commands there will not be a command
3158 * complete event).
3159 */
3160 if (ev->status ||
3161 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event))
3162 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
3163 req_complete_skb);
3164
3165 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
3166 bt_dev_err(hdev,
3167 "unexpected event for opcode 0x%4.4x", *opcode);
3168 return;
3169 }
3170
3171 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3172 queue_work(hdev->workqueue, &hdev->cmd_work);
3173 }
3174
3175 static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
3176 {
3177 struct hci_ev_hardware_error *ev = (void *) skb->data;
3178
3179 hdev->hw_error_code = ev->code;
3180
3181 queue_work(hdev->req_workqueue, &hdev->error_reset);
3182 }
3183
3184 static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3185 {
3186 struct hci_ev_role_change *ev = (void *) skb->data;
3187 struct hci_conn *conn;
3188
3189 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3190
3191 hci_dev_lock(hdev);
3192
3193 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3194 if (conn) {
3195 if (!ev->status)
3196 conn->role = ev->role;
3197
3198 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3199
3200 hci_role_switch_cfm(conn, ev->status, ev->role);
3201 }
3202
3203 hci_dev_unlock(hdev);
3204 }
3205
3206 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3207 {
3208 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
3209 int i;
3210
3211 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
3212 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3213 return;
3214 }
3215
3216 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3217 ev->num_hndl * sizeof(struct hci_comp_pkts_info)) {
3218 BT_DBG("%s bad parameters", hdev->name);
3219 return;
3220 }
3221
3222 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
3223
3224 for (i = 0; i < ev->num_hndl; i++) {
3225 struct hci_comp_pkts_info *info = &ev->handles[i];
3226 struct hci_conn *conn;
3227 __u16 handle, count;
3228
3229 handle = __le16_to_cpu(info->handle);
3230 count = __le16_to_cpu(info->count);
3231
3232 conn = hci_conn_hash_lookup_handle(hdev, handle);
3233 if (!conn)
3234 continue;
3235
3236 conn->sent -= count;
3237
3238 switch (conn->type) {
3239 case ACL_LINK:
3240 hdev->acl_cnt += count;
3241 if (hdev->acl_cnt > hdev->acl_pkts)
3242 hdev->acl_cnt = hdev->acl_pkts;
3243 break;
3244
3245 case LE_LINK:
3246 if (hdev->le_pkts) {
3247 hdev->le_cnt += count;
3248 if (hdev->le_cnt > hdev->le_pkts)
3249 hdev->le_cnt = hdev->le_pkts;
3250 } else {
3251 hdev->acl_cnt += count;
3252 if (hdev->acl_cnt > hdev->acl_pkts)
3253 hdev->acl_cnt = hdev->acl_pkts;
3254 }
3255 break;
3256
3257 case SCO_LINK:
3258 hdev->sco_cnt += count;
3259 if (hdev->sco_cnt > hdev->sco_pkts)
3260 hdev->sco_cnt = hdev->sco_pkts;
3261 break;
3262
3263 default:
3264 bt_dev_err(hdev, "unknown type %d conn %p",
3265 conn->type, conn);
3266 break;
3267 }
3268 }
3269
3270 queue_work(hdev->workqueue, &hdev->tx_work);
3271 }
3272
3273 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3274 __u16 handle)
3275 {
3276 struct hci_chan *chan;
3277
3278 switch (hdev->dev_type) {
3279 case HCI_PRIMARY:
3280 return hci_conn_hash_lookup_handle(hdev, handle);
3281 case HCI_AMP:
3282 chan = hci_chan_lookup_handle(hdev, handle);
3283 if (chan)
3284 return chan->conn;
3285 break;
3286 default:
3287 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
3288 break;
3289 }
3290
3291 return NULL;
3292 }
3293
3294 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3295 {
3296 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3297 int i;
3298
3299 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3300 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3301 return;
3302 }
3303
3304 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3305 ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3306 BT_DBG("%s bad parameters", hdev->name);
3307 return;
3308 }
3309
3310 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3311 ev->num_hndl);
3312
3313 for (i = 0; i < ev->num_hndl; i++) {
3314 struct hci_comp_blocks_info *info = &ev->handles[i];
3315 struct hci_conn *conn = NULL;
3316 __u16 handle, block_count;
3317
3318 handle = __le16_to_cpu(info->handle);
3319 block_count = __le16_to_cpu(info->blocks);
3320
3321 conn = __hci_conn_lookup_handle(hdev, handle);
3322 if (!conn)
3323 continue;
3324
3325 conn->sent -= block_count;
3326
3327 switch (conn->type) {
3328 case ACL_LINK:
3329 case AMP_LINK:
3330 hdev->block_cnt += block_count;
3331 if (hdev->block_cnt > hdev->num_blocks)
3332 hdev->block_cnt = hdev->num_blocks;
3333 break;
3334
3335 default:
3336 bt_dev_err(hdev, "unknown type %d conn %p",
3337 conn->type, conn);
3338 break;
3339 }
3340 }
3341
3342 queue_work(hdev->workqueue, &hdev->tx_work);
3343 }
3344
3345 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3346 {
3347 struct hci_ev_mode_change *ev = (void *) skb->data;
3348 struct hci_conn *conn;
3349
3350 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3351
3352 hci_dev_lock(hdev);
3353
3354 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3355 if (conn) {
3356 conn->mode = ev->mode;
3357
3358 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3359 &conn->flags)) {
3360 if (conn->mode == HCI_CM_ACTIVE)
3361 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3362 else
3363 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3364 }
3365
3366 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3367 hci_sco_setup(conn, ev->status);
3368 }
3369
3370 hci_dev_unlock(hdev);
3371 }
3372
3373 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3374 {
3375 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3376 struct hci_conn *conn;
3377
3378 BT_DBG("%s", hdev->name);
3379
3380 hci_dev_lock(hdev);
3381
3382 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3383 if (!conn)
3384 goto unlock;
3385
3386 if (conn->state == BT_CONNECTED) {
3387 hci_conn_hold(conn);
3388 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3389 hci_conn_drop(conn);
3390 }
3391
3392 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3393 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3394 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3395 sizeof(ev->bdaddr), &ev->bdaddr);
3396 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3397 u8 secure;
3398
3399 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3400 secure = 1;
3401 else
3402 secure = 0;
3403
3404 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3405 }
3406
3407 unlock:
3408 hci_dev_unlock(hdev);
3409 }
3410
3411 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3412 {
3413 if (key_type == HCI_LK_CHANGED_COMBINATION)
3414 return;
3415
3416 conn->pin_length = pin_len;
3417 conn->key_type = key_type;
3418
3419 switch (key_type) {
3420 case HCI_LK_LOCAL_UNIT:
3421 case HCI_LK_REMOTE_UNIT:
3422 case HCI_LK_DEBUG_COMBINATION:
3423 return;
3424 case HCI_LK_COMBINATION:
3425 if (pin_len == 16)
3426 conn->pending_sec_level = BT_SECURITY_HIGH;
3427 else
3428 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3429 break;
3430 case HCI_LK_UNAUTH_COMBINATION_P192:
3431 case HCI_LK_UNAUTH_COMBINATION_P256:
3432 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3433 break;
3434 case HCI_LK_AUTH_COMBINATION_P192:
3435 conn->pending_sec_level = BT_SECURITY_HIGH;
3436 break;
3437 case HCI_LK_AUTH_COMBINATION_P256:
3438 conn->pending_sec_level = BT_SECURITY_FIPS;
3439 break;
3440 }
3441 }
3442
3443 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3444 {
3445 struct hci_ev_link_key_req *ev = (void *) skb->data;
3446 struct hci_cp_link_key_reply cp;
3447 struct hci_conn *conn;
3448 struct link_key *key;
3449
3450 BT_DBG("%s", hdev->name);
3451
3452 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3453 return;
3454
3455 hci_dev_lock(hdev);
3456
3457 key = hci_find_link_key(hdev, &ev->bdaddr);
3458 if (!key) {
3459 BT_DBG("%s link key not found for %pMR", hdev->name,
3460 &ev->bdaddr);
3461 goto not_found;
3462 }
3463
3464 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3465 &ev->bdaddr);
3466
3467 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3468 if (conn) {
3469 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3470
3471 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3472 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3473 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3474 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3475 goto not_found;
3476 }
3477
3478 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3479 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3480 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3481 BT_DBG("%s ignoring key unauthenticated for high security",
3482 hdev->name);
3483 goto not_found;
3484 }
3485
3486 conn_set_key(conn, key->type, key->pin_len);
3487 }
3488
3489 bacpy(&cp.bdaddr, &ev->bdaddr);
3490 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3491
3492 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3493
3494 hci_dev_unlock(hdev);
3495
3496 return;
3497
3498 not_found:
3499 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3500 hci_dev_unlock(hdev);
3501 }
3502
3503 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3504 {
3505 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3506 struct hci_conn *conn;
3507 struct link_key *key;
3508 bool persistent;
3509 u8 pin_len = 0;
3510
3511 BT_DBG("%s", hdev->name);
3512
3513 hci_dev_lock(hdev);
3514
3515 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3516 if (!conn)
3517 goto unlock;
3518
3519 hci_conn_hold(conn);
3520 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3521 hci_conn_drop(conn);
3522
3523 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3524 conn_set_key(conn, ev->key_type, conn->pin_length);
3525
3526 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3527 goto unlock;
3528
3529 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3530 ev->key_type, pin_len, &persistent);
3531 if (!key)
3532 goto unlock;
3533
3534 /* Update connection information since adding the key will have
3535 * fixed up the type in the case of changed combination keys.
3536 */
3537 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
3538 conn_set_key(conn, key->type, key->pin_len);
3539
3540 mgmt_new_link_key(hdev, key, persistent);
3541
3542 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3543 * is set. If it's not set simply remove the key from the kernel
3544 * list (we've still notified user space about it but with
3545 * store_hint being 0).
3546 */
3547 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3548 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
3549 list_del_rcu(&key->list);
3550 kfree_rcu(key, rcu);
3551 goto unlock;
3552 }
3553
3554 if (persistent)
3555 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3556 else
3557 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3558
3559 unlock:
3560 hci_dev_unlock(hdev);
3561 }
3562
3563 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3564 {
3565 struct hci_ev_clock_offset *ev = (void *) skb->data;
3566 struct hci_conn *conn;
3567
3568 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3569
3570 hci_dev_lock(hdev);
3571
3572 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3573 if (conn && !ev->status) {
3574 struct inquiry_entry *ie;
3575
3576 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3577 if (ie) {
3578 ie->data.clock_offset = ev->clock_offset;
3579 ie->timestamp = jiffies;
3580 }
3581 }
3582
3583 hci_dev_unlock(hdev);
3584 }
3585
3586 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3587 {
3588 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
3589 struct hci_conn *conn;
3590
3591 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3592
3593 hci_dev_lock(hdev);
3594
3595 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3596 if (conn && !ev->status)
3597 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
3598
3599 hci_dev_unlock(hdev);
3600 }
3601
3602 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3603 {
3604 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3605 struct inquiry_entry *ie;
3606
3607 BT_DBG("%s", hdev->name);
3608
3609 hci_dev_lock(hdev);
3610
3611 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3612 if (ie) {
3613 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
3614 ie->timestamp = jiffies;
3615 }
3616
3617 hci_dev_unlock(hdev);
3618 }
3619
3620 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
3621 struct sk_buff *skb)
3622 {
3623 struct inquiry_data data;
3624 int num_rsp = *((__u8 *) skb->data);
3625
3626 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3627
3628 if (!num_rsp)
3629 return;
3630
3631 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3632 return;
3633
3634 hci_dev_lock(hdev);
3635
3636 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3637 struct inquiry_info_with_rssi_and_pscan_mode *info;
3638 info = (void *) (skb->data + 1);
3639
3640 for (; num_rsp; num_rsp--, info++) {
3641 u32 flags;
3642
3643 bacpy(&data.bdaddr, &info->bdaddr);
3644 data.pscan_rep_mode = info->pscan_rep_mode;
3645 data.pscan_period_mode = info->pscan_period_mode;
3646 data.pscan_mode = info->pscan_mode;
3647 memcpy(data.dev_class, info->dev_class, 3);
3648 data.clock_offset = info->clock_offset;
3649 data.rssi = info->rssi;
3650 data.ssp_mode = 0x00;
3651
3652 flags = hci_inquiry_cache_update(hdev, &data, false);
3653
3654 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3655 info->dev_class, info->rssi,
3656 flags, NULL, 0, NULL, 0);
3657 }
3658 } else {
3659 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
3660
3661 for (; num_rsp; num_rsp--, info++) {
3662 u32 flags;
3663
3664 bacpy(&data.bdaddr, &info->bdaddr);
3665 data.pscan_rep_mode = info->pscan_rep_mode;
3666 data.pscan_period_mode = info->pscan_period_mode;
3667 data.pscan_mode = 0x00;
3668 memcpy(data.dev_class, info->dev_class, 3);
3669 data.clock_offset = info->clock_offset;
3670 data.rssi = info->rssi;
3671 data.ssp_mode = 0x00;
3672
3673 flags = hci_inquiry_cache_update(hdev, &data, false);
3674
3675 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3676 info->dev_class, info->rssi,
3677 flags, NULL, 0, NULL, 0);
3678 }
3679 }
3680
3681 hci_dev_unlock(hdev);
3682 }
3683
3684 static void hci_remote_ext_features_evt(struct hci_dev *hdev,
3685 struct sk_buff *skb)
3686 {
3687 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
3688 struct hci_conn *conn;
3689
3690 BT_DBG("%s", hdev->name);
3691
3692 hci_dev_lock(hdev);
3693
3694 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3695 if (!conn)
3696 goto unlock;
3697
3698 if (ev->page < HCI_MAX_PAGES)
3699 memcpy(conn->features[ev->page], ev->features, 8);
3700
3701 if (!ev->status && ev->page == 0x01) {
3702 struct inquiry_entry *ie;
3703
3704 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3705 if (ie)
3706 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3707
3708 if (ev->features[0] & LMP_HOST_SSP) {
3709 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3710 } else {
3711 /* It is mandatory by the Bluetooth specification that
3712 * Extended Inquiry Results are only used when Secure
3713 * Simple Pairing is enabled, but some devices violate
3714 * this.
3715 *
3716 * To make these devices work, the internal SSP
3717 * enabled flag needs to be cleared if the remote host
3718 * features do not indicate SSP support */
3719 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3720 }
3721
3722 if (ev->features[0] & LMP_HOST_SC)
3723 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3724 }
3725
3726 if (conn->state != BT_CONFIG)
3727 goto unlock;
3728
3729 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3730 struct hci_cp_remote_name_req cp;
3731 memset(&cp, 0, sizeof(cp));
3732 bacpy(&cp.bdaddr, &conn->dst);
3733 cp.pscan_rep_mode = 0x02;
3734 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3735 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3736 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3737
3738 if (!hci_outgoing_auth_needed(hdev, conn)) {
3739 conn->state = BT_CONNECTED;
3740 hci_connect_cfm(conn, ev->status);
3741 hci_conn_drop(conn);
3742 }
3743
3744 unlock:
3745 hci_dev_unlock(hdev);
3746 }
3747
3748 static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
3749 struct sk_buff *skb)
3750 {
3751 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
3752 struct hci_conn *conn;
3753
3754 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3755
3756 hci_dev_lock(hdev);
3757
3758 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3759 if (!conn) {
3760 if (ev->link_type == ESCO_LINK)
3761 goto unlock;
3762
3763 /* When the link type in the event indicates SCO connection
3764 * and lookup of the connection object fails, then check
3765 * if an eSCO connection object exists.
3766 *
3767 * The core limits the synchronous connections to either
3768 * SCO or eSCO. The eSCO connection is preferred and tried
3769 * to be setup first and until successfully established,
3770 * the link type will be hinted as eSCO.
3771 */
3772 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
3773 if (!conn)
3774 goto unlock;
3775 }
3776
3777 switch (ev->status) {
3778 case 0x00:
3779 conn->handle = __le16_to_cpu(ev->handle);
3780 conn->state = BT_CONNECTED;
3781 conn->type = ev->link_type;
3782
3783 hci_debugfs_create_conn(conn);
3784 hci_conn_add_sysfs(conn);
3785 break;
3786
3787 case 0x10: /* Connection Accept Timeout */
3788 case 0x0d: /* Connection Rejected due to Limited Resources */
3789 case 0x11: /* Unsupported Feature or Parameter Value */
3790 case 0x1c: /* SCO interval rejected */
3791 case 0x1a: /* Unsupported Remote Feature */
3792 case 0x1f: /* Unspecified error */
3793 case 0x20: /* Unsupported LMP Parameter value */
3794 if (conn->out) {
3795 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
3796 (hdev->esco_type & EDR_ESCO_MASK);
3797 if (hci_setup_sync(conn, conn->link->handle))
3798 goto unlock;
3799 }
3800 /* fall through */
3801
3802 default:
3803 conn->state = BT_CLOSED;
3804 break;
3805 }
3806
3807 hci_connect_cfm(conn, ev->status);
3808 if (ev->status)
3809 hci_conn_del(conn);
3810
3811 unlock:
3812 hci_dev_unlock(hdev);
3813 }
3814
3815 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
3816 {
3817 size_t parsed = 0;
3818
3819 while (parsed < eir_len) {
3820 u8 field_len = eir[0];
3821
3822 if (field_len == 0)
3823 return parsed;
3824
3825 parsed += field_len + 1;
3826 eir += field_len + 1;
3827 }
3828
3829 return eir_len;
3830 }
3831
3832 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
3833 struct sk_buff *skb)
3834 {
3835 struct inquiry_data data;
3836 struct extended_inquiry_info *info = (void *) (skb->data + 1);
3837 int num_rsp = *((__u8 *) skb->data);
3838 size_t eir_len;
3839
3840 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3841
3842 if (!num_rsp)
3843 return;
3844
3845 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3846 return;
3847
3848 hci_dev_lock(hdev);
3849
3850 for (; num_rsp; num_rsp--, info++) {
3851 u32 flags;
3852 bool name_known;
3853
3854 bacpy(&data.bdaddr, &info->bdaddr);
3855 data.pscan_rep_mode = info->pscan_rep_mode;
3856 data.pscan_period_mode = info->pscan_period_mode;
3857 data.pscan_mode = 0x00;
3858 memcpy(data.dev_class, info->dev_class, 3);
3859 data.clock_offset = info->clock_offset;
3860 data.rssi = info->rssi;
3861 data.ssp_mode = 0x01;
3862
3863 if (hci_dev_test_flag(hdev, HCI_MGMT))
3864 name_known = eir_get_data(info->data,
3865 sizeof(info->data),
3866 EIR_NAME_COMPLETE, NULL);
3867 else
3868 name_known = true;
3869
3870 flags = hci_inquiry_cache_update(hdev, &data, name_known);
3871
3872 eir_len = eir_get_length(info->data, sizeof(info->data));
3873
3874 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3875 info->dev_class, info->rssi,
3876 flags, info->data, eir_len, NULL, 0);
3877 }
3878
3879 hci_dev_unlock(hdev);
3880 }
3881
3882 static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
3883 struct sk_buff *skb)
3884 {
3885 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
3886 struct hci_conn *conn;
3887
3888 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3889 __le16_to_cpu(ev->handle));
3890
3891 hci_dev_lock(hdev);
3892
3893 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3894 if (!conn)
3895 goto unlock;
3896
3897 /* For BR/EDR the necessary steps are taken through the
3898 * auth_complete event.
3899 */
3900 if (conn->type != LE_LINK)
3901 goto unlock;
3902
3903 if (!ev->status)
3904 conn->sec_level = conn->pending_sec_level;
3905
3906 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3907
3908 if (ev->status && conn->state == BT_CONNECTED) {
3909 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3910 hci_conn_drop(conn);
3911 goto unlock;
3912 }
3913
3914 if (conn->state == BT_CONFIG) {
3915 if (!ev->status)
3916 conn->state = BT_CONNECTED;
3917
3918 hci_connect_cfm(conn, ev->status);
3919 hci_conn_drop(conn);
3920 } else {
3921 hci_auth_cfm(conn, ev->status);
3922
3923 hci_conn_hold(conn);
3924 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3925 hci_conn_drop(conn);
3926 }
3927
3928 unlock:
3929 hci_dev_unlock(hdev);
3930 }
3931
3932 static u8 hci_get_auth_req(struct hci_conn *conn)
3933 {
3934 /* If remote requests no-bonding follow that lead */
3935 if (conn->remote_auth == HCI_AT_NO_BONDING ||
3936 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
3937 return conn->remote_auth | (conn->auth_type & 0x01);
3938
3939 /* If both remote and local have enough IO capabilities, require
3940 * MITM protection
3941 */
3942 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
3943 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
3944 return conn->remote_auth | 0x01;
3945
3946 /* No MITM protection possible so ignore remote requirement */
3947 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
3948 }
3949
3950 static u8 bredr_oob_data_present(struct hci_conn *conn)
3951 {
3952 struct hci_dev *hdev = conn->hdev;
3953 struct oob_data *data;
3954
3955 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
3956 if (!data)
3957 return 0x00;
3958
3959 if (bredr_sc_enabled(hdev)) {
3960 /* When Secure Connections is enabled, then just
3961 * return the present value stored with the OOB
3962 * data. The stored value contains the right present
3963 * information. However it can only be trusted when
3964 * not in Secure Connection Only mode.
3965 */
3966 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
3967 return data->present;
3968
3969 /* When Secure Connections Only mode is enabled, then
3970 * the P-256 values are required. If they are not
3971 * available, then do not declare that OOB data is
3972 * present.
3973 */
3974 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
3975 !memcmp(data->hash256, ZERO_KEY, 16))
3976 return 0x00;
3977
3978 return 0x02;
3979 }
3980
3981 /* When Secure Connections is not enabled or actually
3982 * not supported by the hardware, then check that if
3983 * P-192 data values are present.
3984 */
3985 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
3986 !memcmp(data->hash192, ZERO_KEY, 16))
3987 return 0x00;
3988
3989 return 0x01;
3990 }
3991
3992 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3993 {
3994 struct hci_ev_io_capa_request *ev = (void *) skb->data;
3995 struct hci_conn *conn;
3996
3997 BT_DBG("%s", hdev->name);
3998
3999 hci_dev_lock(hdev);
4000
4001 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4002 if (!conn)
4003 goto unlock;
4004
4005 hci_conn_hold(conn);
4006
4007 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4008 goto unlock;
4009
4010 /* Allow pairing if we're pairable, the initiators of the
4011 * pairing or if the remote is not requesting bonding.
4012 */
4013 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
4014 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
4015 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
4016 struct hci_cp_io_capability_reply cp;
4017
4018 bacpy(&cp.bdaddr, &ev->bdaddr);
4019 /* Change the IO capability from KeyboardDisplay
4020 * to DisplayYesNo as it is not supported by BT spec. */
4021 cp.capability = (conn->io_capability == 0x04) ?
4022 HCI_IO_DISPLAY_YESNO : conn->io_capability;
4023
4024 /* If we are initiators, there is no remote information yet */
4025 if (conn->remote_auth == 0xff) {
4026 /* Request MITM protection if our IO caps allow it
4027 * except for the no-bonding case.
4028 */
4029 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4030 conn->auth_type != HCI_AT_NO_BONDING)
4031 conn->auth_type |= 0x01;
4032 } else {
4033 conn->auth_type = hci_get_auth_req(conn);
4034 }
4035
4036 /* If we're not bondable, force one of the non-bondable
4037 * authentication requirement values.
4038 */
4039 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4040 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
4041
4042 cp.authentication = conn->auth_type;
4043 cp.oob_data = bredr_oob_data_present(conn);
4044
4045 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4046 sizeof(cp), &cp);
4047 } else {
4048 struct hci_cp_io_capability_neg_reply cp;
4049
4050 bacpy(&cp.bdaddr, &ev->bdaddr);
4051 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4052
4053 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4054 sizeof(cp), &cp);
4055 }
4056
4057 unlock:
4058 hci_dev_unlock(hdev);
4059 }
4060
4061 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4062 {
4063 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
4064 struct hci_conn *conn;
4065
4066 BT_DBG("%s", hdev->name);
4067
4068 hci_dev_lock(hdev);
4069
4070 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4071 if (!conn)
4072 goto unlock;
4073
4074 conn->remote_cap = ev->capability;
4075 conn->remote_auth = ev->authentication;
4076
4077 unlock:
4078 hci_dev_unlock(hdev);
4079 }
4080
4081 static void hci_user_confirm_request_evt(struct hci_dev *hdev,
4082 struct sk_buff *skb)
4083 {
4084 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4085 int loc_mitm, rem_mitm, confirm_hint = 0;
4086 struct hci_conn *conn;
4087
4088 BT_DBG("%s", hdev->name);
4089
4090 hci_dev_lock(hdev);
4091
4092 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4093 goto unlock;
4094
4095 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4096 if (!conn)
4097 goto unlock;
4098
4099 loc_mitm = (conn->auth_type & 0x01);
4100 rem_mitm = (conn->remote_auth & 0x01);
4101
4102 /* If we require MITM but the remote device can't provide that
4103 * (it has NoInputNoOutput) then reject the confirmation
4104 * request. We check the security level here since it doesn't
4105 * necessarily match conn->auth_type.
4106 */
4107 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
4108 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4109 BT_DBG("Rejecting request: remote device can't provide MITM");
4110 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4111 sizeof(ev->bdaddr), &ev->bdaddr);
4112 goto unlock;
4113 }
4114
4115 /* If no side requires MITM protection; auto-accept */
4116 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
4117 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4118
4119 /* If we're not the initiators request authorization to
4120 * proceed from user space (mgmt_user_confirm with
4121 * confirm_hint set to 1). The exception is if neither
4122 * side had MITM or if the local IO capability is
4123 * NoInputNoOutput, in which case we do auto-accept
4124 */
4125 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4126 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4127 (loc_mitm || rem_mitm)) {
4128 BT_DBG("Confirming auto-accept as acceptor");
4129 confirm_hint = 1;
4130 goto confirm;
4131 }
4132
4133 BT_DBG("Auto-accept of user confirmation with %ums delay",
4134 hdev->auto_accept_delay);
4135
4136 if (hdev->auto_accept_delay > 0) {
4137 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4138 queue_delayed_work(conn->hdev->workqueue,
4139 &conn->auto_accept_work, delay);
4140 goto unlock;
4141 }
4142
4143 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4144 sizeof(ev->bdaddr), &ev->bdaddr);
4145 goto unlock;
4146 }
4147
4148 confirm:
4149 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4150 le32_to_cpu(ev->passkey), confirm_hint);
4151
4152 unlock:
4153 hci_dev_unlock(hdev);
4154 }
4155
4156 static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4157 struct sk_buff *skb)
4158 {
4159 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4160
4161 BT_DBG("%s", hdev->name);
4162
4163 if (hci_dev_test_flag(hdev, HCI_MGMT))
4164 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4165 }
4166
4167 static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4168 struct sk_buff *skb)
4169 {
4170 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4171 struct hci_conn *conn;
4172
4173 BT_DBG("%s", hdev->name);
4174
4175 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4176 if (!conn)
4177 return;
4178
4179 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4180 conn->passkey_entered = 0;
4181
4182 if (hci_dev_test_flag(hdev, HCI_MGMT))
4183 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4184 conn->dst_type, conn->passkey_notify,
4185 conn->passkey_entered);
4186 }
4187
4188 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4189 {
4190 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4191 struct hci_conn *conn;
4192
4193 BT_DBG("%s", hdev->name);
4194
4195 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4196 if (!conn)
4197 return;
4198
4199 switch (ev->type) {
4200 case HCI_KEYPRESS_STARTED:
4201 conn->passkey_entered = 0;
4202 return;
4203
4204 case HCI_KEYPRESS_ENTERED:
4205 conn->passkey_entered++;
4206 break;
4207
4208 case HCI_KEYPRESS_ERASED:
4209 conn->passkey_entered--;
4210 break;
4211
4212 case HCI_KEYPRESS_CLEARED:
4213 conn->passkey_entered = 0;
4214 break;
4215
4216 case HCI_KEYPRESS_COMPLETED:
4217 return;
4218 }
4219
4220 if (hci_dev_test_flag(hdev, HCI_MGMT))
4221 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4222 conn->dst_type, conn->passkey_notify,
4223 conn->passkey_entered);
4224 }
4225
4226 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4227 struct sk_buff *skb)
4228 {
4229 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4230 struct hci_conn *conn;
4231
4232 BT_DBG("%s", hdev->name);
4233
4234 hci_dev_lock(hdev);
4235
4236 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4237 if (!conn)
4238 goto unlock;
4239
4240 /* Reset the authentication requirement to unknown */
4241 conn->remote_auth = 0xff;
4242
4243 /* To avoid duplicate auth_failed events to user space we check
4244 * the HCI_CONN_AUTH_PEND flag which will be set if we
4245 * initiated the authentication. A traditional auth_complete
4246 * event gets always produced as initiator and is also mapped to
4247 * the mgmt_auth_failed event */
4248 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4249 mgmt_auth_failed(conn, ev->status);
4250
4251 hci_conn_drop(conn);
4252
4253 unlock:
4254 hci_dev_unlock(hdev);
4255 }
4256
4257 static void hci_remote_host_features_evt(struct hci_dev *hdev,
4258 struct sk_buff *skb)
4259 {
4260 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4261 struct inquiry_entry *ie;
4262 struct hci_conn *conn;
4263
4264 BT_DBG("%s", hdev->name);
4265
4266 hci_dev_lock(hdev);
4267
4268 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4269 if (conn)
4270 memcpy(conn->features[1], ev->features, 8);
4271
4272 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4273 if (ie)
4274 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4275
4276 hci_dev_unlock(hdev);
4277 }
4278
4279 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4280 struct sk_buff *skb)
4281 {
4282 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4283 struct oob_data *data;
4284
4285 BT_DBG("%s", hdev->name);
4286
4287 hci_dev_lock(hdev);
4288
4289 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4290 goto unlock;
4291
4292 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4293 if (!data) {
4294 struct hci_cp_remote_oob_data_neg_reply cp;
4295
4296 bacpy(&cp.bdaddr, &ev->bdaddr);
4297 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4298 sizeof(cp), &cp);
4299 goto unlock;
4300 }
4301
4302 if (bredr_sc_enabled(hdev)) {
4303 struct hci_cp_remote_oob_ext_data_reply cp;
4304
4305 bacpy(&cp.bdaddr, &ev->bdaddr);
4306 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4307 memset(cp.hash192, 0, sizeof(cp.hash192));
4308 memset(cp.rand192, 0, sizeof(cp.rand192));
4309 } else {
4310 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4311 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4312 }
4313 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4314 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4315
4316 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4317 sizeof(cp), &cp);
4318 } else {
4319 struct hci_cp_remote_oob_data_reply cp;
4320
4321 bacpy(&cp.bdaddr, &ev->bdaddr);
4322 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4323 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4324
4325 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4326 sizeof(cp), &cp);
4327 }
4328
4329 unlock:
4330 hci_dev_unlock(hdev);
4331 }
4332
4333 #if IS_ENABLED(CONFIG_BT_HS)
4334 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4335 {
4336 struct hci_ev_channel_selected *ev = (void *)skb->data;
4337 struct hci_conn *hcon;
4338
4339 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4340
4341 skb_pull(skb, sizeof(*ev));
4342
4343 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4344 if (!hcon)
4345 return;
4346
4347 amp_read_loc_assoc_final_data(hdev, hcon);
4348 }
4349
4350 static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4351 struct sk_buff *skb)
4352 {
4353 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4354 struct hci_conn *hcon, *bredr_hcon;
4355
4356 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4357 ev->status);
4358
4359 hci_dev_lock(hdev);
4360
4361 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4362 if (!hcon) {
4363 hci_dev_unlock(hdev);
4364 return;
4365 }
4366
4367 if (ev->status) {
4368 hci_conn_del(hcon);
4369 hci_dev_unlock(hdev);
4370 return;
4371 }
4372
4373 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4374
4375 hcon->state = BT_CONNECTED;
4376 bacpy(&hcon->dst, &bredr_hcon->dst);
4377
4378 hci_conn_hold(hcon);
4379 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4380 hci_conn_drop(hcon);
4381
4382 hci_debugfs_create_conn(hcon);
4383 hci_conn_add_sysfs(hcon);
4384
4385 amp_physical_cfm(bredr_hcon, hcon);
4386
4387 hci_dev_unlock(hdev);
4388 }
4389
4390 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4391 {
4392 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4393 struct hci_conn *hcon;
4394 struct hci_chan *hchan;
4395 struct amp_mgr *mgr;
4396
4397 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4398 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4399 ev->status);
4400
4401 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4402 if (!hcon)
4403 return;
4404
4405 /* Create AMP hchan */
4406 hchan = hci_chan_create(hcon);
4407 if (!hchan)
4408 return;
4409
4410 hchan->handle = le16_to_cpu(ev->handle);
4411
4412 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4413
4414 mgr = hcon->amp_mgr;
4415 if (mgr && mgr->bredr_chan) {
4416 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4417
4418 l2cap_chan_lock(bredr_chan);
4419
4420 bredr_chan->conn->mtu = hdev->block_mtu;
4421 l2cap_logical_cfm(bredr_chan, hchan, 0);
4422 hci_conn_hold(hcon);
4423
4424 l2cap_chan_unlock(bredr_chan);
4425 }
4426 }
4427
4428 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4429 struct sk_buff *skb)
4430 {
4431 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4432 struct hci_chan *hchan;
4433
4434 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4435 le16_to_cpu(ev->handle), ev->status);
4436
4437 if (ev->status)
4438 return;
4439
4440 hci_dev_lock(hdev);
4441
4442 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4443 if (!hchan)
4444 goto unlock;
4445
4446 amp_destroy_logical_link(hchan, ev->reason);
4447
4448 unlock:
4449 hci_dev_unlock(hdev);
4450 }
4451
4452 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4453 struct sk_buff *skb)
4454 {
4455 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4456 struct hci_conn *hcon;
4457
4458 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4459
4460 if (ev->status)
4461 return;
4462
4463 hci_dev_lock(hdev);
4464
4465 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4466 if (hcon) {
4467 hcon->state = BT_CLOSED;
4468 hci_conn_del(hcon);
4469 }
4470
4471 hci_dev_unlock(hdev);
4472 }
4473 #endif
4474
4475 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4476 {
4477 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4478 struct hci_conn_params *params;
4479 struct hci_conn *conn;
4480 struct smp_irk *irk;
4481 u8 addr_type;
4482
4483 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4484
4485 hci_dev_lock(hdev);
4486
4487 /* All controllers implicitly stop advertising in the event of a
4488 * connection, so ensure that the state bit is cleared.
4489 */
4490 hci_dev_clear_flag(hdev, HCI_LE_ADV);
4491
4492 conn = hci_lookup_le_connect(hdev);
4493 if (!conn) {
4494 conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4495 if (!conn) {
4496 bt_dev_err(hdev, "no memory for new connection");
4497 goto unlock;
4498 }
4499
4500 conn->dst_type = ev->bdaddr_type;
4501
4502 /* If we didn't have a hci_conn object previously
4503 * but we're in master role this must be something
4504 * initiated using a white list. Since white list based
4505 * connections are not "first class citizens" we don't
4506 * have full tracking of them. Therefore, we go ahead
4507 * with a "best effort" approach of determining the
4508 * initiator address based on the HCI_PRIVACY flag.
4509 */
4510 if (conn->out) {
4511 conn->resp_addr_type = ev->bdaddr_type;
4512 bacpy(&conn->resp_addr, &ev->bdaddr);
4513 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
4514 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4515 bacpy(&conn->init_addr, &hdev->rpa);
4516 } else {
4517 hci_copy_identity_address(hdev,
4518 &conn->init_addr,
4519 &conn->init_addr_type);
4520 }
4521 }
4522 } else {
4523 cancel_delayed_work(&conn->le_conn_timeout);
4524 }
4525
4526 if (!conn->out) {
4527 /* Set the responder (our side) address type based on
4528 * the advertising address type.
4529 */
4530 conn->resp_addr_type = hdev->adv_addr_type;
4531 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
4532 bacpy(&conn->resp_addr, &hdev->random_addr);
4533 else
4534 bacpy(&conn->resp_addr, &hdev->bdaddr);
4535
4536 conn->init_addr_type = ev->bdaddr_type;
4537 bacpy(&conn->init_addr, &ev->bdaddr);
4538
4539 /* For incoming connections, set the default minimum
4540 * and maximum connection interval. They will be used
4541 * to check if the parameters are in range and if not
4542 * trigger the connection update procedure.
4543 */
4544 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4545 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4546 }
4547
4548 /* Lookup the identity address from the stored connection
4549 * address and address type.
4550 *
4551 * When establishing connections to an identity address, the
4552 * connection procedure will store the resolvable random
4553 * address first. Now if it can be converted back into the
4554 * identity address, start using the identity address from
4555 * now on.
4556 */
4557 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4558 if (irk) {
4559 bacpy(&conn->dst, &irk->bdaddr);
4560 conn->dst_type = irk->addr_type;
4561 }
4562
4563 if (ev->status) {
4564 hci_le_conn_failed(conn, ev->status);
4565 goto unlock;
4566 }
4567
4568 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
4569 addr_type = BDADDR_LE_PUBLIC;
4570 else
4571 addr_type = BDADDR_LE_RANDOM;
4572
4573 /* Drop the connection if the device is blocked */
4574 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
4575 hci_conn_drop(conn);
4576 goto unlock;
4577 }
4578
4579 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4580 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4581
4582 conn->sec_level = BT_SECURITY_LOW;
4583 conn->handle = __le16_to_cpu(ev->handle);
4584 conn->state = BT_CONFIG;
4585
4586 conn->le_conn_interval = le16_to_cpu(ev->interval);
4587 conn->le_conn_latency = le16_to_cpu(ev->latency);
4588 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4589
4590 hci_debugfs_create_conn(conn);
4591 hci_conn_add_sysfs(conn);
4592
4593 if (!ev->status) {
4594 /* The remote features procedure is defined for master
4595 * role only. So only in case of an initiated connection
4596 * request the remote features.
4597 *
4598 * If the local controller supports slave-initiated features
4599 * exchange, then requesting the remote features in slave
4600 * role is possible. Otherwise just transition into the
4601 * connected state without requesting the remote features.
4602 */
4603 if (conn->out ||
4604 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
4605 struct hci_cp_le_read_remote_features cp;
4606
4607 cp.handle = __cpu_to_le16(conn->handle);
4608
4609 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
4610 sizeof(cp), &cp);
4611
4612 hci_conn_hold(conn);
4613 } else {
4614 conn->state = BT_CONNECTED;
4615 hci_connect_cfm(conn, ev->status);
4616 }
4617 } else {
4618 hci_connect_cfm(conn, ev->status);
4619 }
4620
4621 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
4622 conn->dst_type);
4623 if (params) {
4624 list_del_init(&params->action);
4625 if (params->conn) {
4626 hci_conn_drop(params->conn);
4627 hci_conn_put(params->conn);
4628 params->conn = NULL;
4629 }
4630 }
4631
4632 unlock:
4633 hci_update_background_scan(hdev);
4634 hci_dev_unlock(hdev);
4635 }
4636
4637 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
4638 struct sk_buff *skb)
4639 {
4640 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
4641 struct hci_conn *conn;
4642
4643 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4644
4645 if (ev->status)
4646 return;
4647
4648 hci_dev_lock(hdev);
4649
4650 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4651 if (conn) {
4652 conn->le_conn_interval = le16_to_cpu(ev->interval);
4653 conn->le_conn_latency = le16_to_cpu(ev->latency);
4654 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4655 }
4656
4657 hci_dev_unlock(hdev);
4658 }
4659
4660 /* This function requires the caller holds hdev->lock */
4661 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
4662 bdaddr_t *addr,
4663 u8 addr_type, u8 adv_type,
4664 bdaddr_t *direct_rpa)
4665 {
4666 struct hci_conn *conn;
4667 struct hci_conn_params *params;
4668
4669 /* If the event is not connectable don't proceed further */
4670 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4671 return NULL;
4672
4673 /* Ignore if the device is blocked */
4674 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4675 return NULL;
4676
4677 /* Most controller will fail if we try to create new connections
4678 * while we have an existing one in slave role.
4679 */
4680 if (hdev->conn_hash.le_num_slave > 0)
4681 return NULL;
4682
4683 /* If we're not connectable only connect devices that we have in
4684 * our pend_le_conns list.
4685 */
4686 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
4687 addr_type);
4688 if (!params)
4689 return NULL;
4690
4691 if (!params->explicit_connect) {
4692 switch (params->auto_connect) {
4693 case HCI_AUTO_CONN_DIRECT:
4694 /* Only devices advertising with ADV_DIRECT_IND are
4695 * triggering a connection attempt. This is allowing
4696 * incoming connections from slave devices.
4697 */
4698 if (adv_type != LE_ADV_DIRECT_IND)
4699 return NULL;
4700 break;
4701 case HCI_AUTO_CONN_ALWAYS:
4702 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
4703 * are triggering a connection attempt. This means
4704 * that incoming connectioms from slave device are
4705 * accepted and also outgoing connections to slave
4706 * devices are established when found.
4707 */
4708 break;
4709 default:
4710 return NULL;
4711 }
4712 }
4713
4714 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4715 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER,
4716 direct_rpa);
4717 if (!IS_ERR(conn)) {
4718 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
4719 * by higher layer that tried to connect, if no then
4720 * store the pointer since we don't really have any
4721 * other owner of the object besides the params that
4722 * triggered it. This way we can abort the connection if
4723 * the parameters get removed and keep the reference
4724 * count consistent once the connection is established.
4725 */
4726
4727 if (!params->explicit_connect)
4728 params->conn = hci_conn_get(conn);
4729
4730 return conn;
4731 }
4732
4733 switch (PTR_ERR(conn)) {
4734 case -EBUSY:
4735 /* If hci_connect() returns -EBUSY it means there is already
4736 * an LE connection attempt going on. Since controllers don't
4737 * support more than one connection attempt at the time, we
4738 * don't consider this an error case.
4739 */
4740 break;
4741 default:
4742 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4743 return NULL;
4744 }
4745
4746 return NULL;
4747 }
4748
4749 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4750 u8 bdaddr_type, bdaddr_t *direct_addr,
4751 u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
4752 {
4753 struct discovery_state *d = &hdev->discovery;
4754 struct smp_irk *irk;
4755 struct hci_conn *conn;
4756 bool match;
4757 u32 flags;
4758 u8 *ptr, real_len;
4759
4760 switch (type) {
4761 case LE_ADV_IND:
4762 case LE_ADV_DIRECT_IND:
4763 case LE_ADV_SCAN_IND:
4764 case LE_ADV_NONCONN_IND:
4765 case LE_ADV_SCAN_RSP:
4766 break;
4767 default:
4768 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
4769 "type: 0x%02x", type);
4770 return;
4771 }
4772
4773 /* Find the end of the data in case the report contains padded zero
4774 * bytes at the end causing an invalid length value.
4775 *
4776 * When data is NULL, len is 0 so there is no need for extra ptr
4777 * check as 'ptr < data + 0' is already false in such case.
4778 */
4779 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
4780 if (ptr + 1 + *ptr > data + len)
4781 break;
4782 }
4783
4784 real_len = ptr - data;
4785
4786 /* Adjust for actual length */
4787 if (len != real_len) {
4788 bt_dev_err_ratelimited(hdev, "advertising data len corrected");
4789 len = real_len;
4790 }
4791
4792 /* If the direct address is present, then this report is from
4793 * a LE Direct Advertising Report event. In that case it is
4794 * important to see if the address is matching the local
4795 * controller address.
4796 */
4797 if (direct_addr) {
4798 /* Only resolvable random addresses are valid for these
4799 * kind of reports and others can be ignored.
4800 */
4801 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
4802 return;
4803
4804 /* If the controller is not using resolvable random
4805 * addresses, then this report can be ignored.
4806 */
4807 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
4808 return;
4809
4810 /* If the local IRK of the controller does not match
4811 * with the resolvable random address provided, then
4812 * this report can be ignored.
4813 */
4814 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
4815 return;
4816 }
4817
4818 /* Check if we need to convert to identity address */
4819 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
4820 if (irk) {
4821 bdaddr = &irk->bdaddr;
4822 bdaddr_type = irk->addr_type;
4823 }
4824
4825 /* Check if we have been requested to connect to this device.
4826 *
4827 * direct_addr is set only for directed advertising reports (it is NULL
4828 * for advertising reports) and is already verified to be RPA above.
4829 */
4830 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type,
4831 direct_addr);
4832 if (conn && type == LE_ADV_IND) {
4833 /* Store report for later inclusion by
4834 * mgmt_device_connected
4835 */
4836 memcpy(conn->le_adv_data, data, len);
4837 conn->le_adv_data_len = len;
4838 }
4839
4840 /* Passive scanning shouldn't trigger any device found events,
4841 * except for devices marked as CONN_REPORT for which we do send
4842 * device found events.
4843 */
4844 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4845 if (type == LE_ADV_DIRECT_IND)
4846 return;
4847
4848 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
4849 bdaddr, bdaddr_type))
4850 return;
4851
4852 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
4853 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4854 else
4855 flags = 0;
4856 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4857 rssi, flags, data, len, NULL, 0);
4858 return;
4859 }
4860
4861 /* When receiving non-connectable or scannable undirected
4862 * advertising reports, this means that the remote device is
4863 * not connectable and then clearly indicate this in the
4864 * device found event.
4865 *
4866 * When receiving a scan response, then there is no way to
4867 * know if the remote device is connectable or not. However
4868 * since scan responses are merged with a previously seen
4869 * advertising report, the flags field from that report
4870 * will be used.
4871 *
4872 * In the really unlikely case that a controller get confused
4873 * and just sends a scan response event, then it is marked as
4874 * not connectable as well.
4875 */
4876 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
4877 type == LE_ADV_SCAN_RSP)
4878 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4879 else
4880 flags = 0;
4881
4882 /* If there's nothing pending either store the data from this
4883 * event or send an immediate device found event if the data
4884 * should not be stored for later.
4885 */
4886 if (!has_pending_adv_report(hdev)) {
4887 /* If the report will trigger a SCAN_REQ store it for
4888 * later merging.
4889 */
4890 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4891 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4892 rssi, flags, data, len);
4893 return;
4894 }
4895
4896 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4897 rssi, flags, data, len, NULL, 0);
4898 return;
4899 }
4900
4901 /* Check if the pending report is for the same device as the new one */
4902 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
4903 bdaddr_type == d->last_adv_addr_type);
4904
4905 /* If the pending data doesn't match this report or this isn't a
4906 * scan response (e.g. we got a duplicate ADV_IND) then force
4907 * sending of the pending data.
4908 */
4909 if (type != LE_ADV_SCAN_RSP || !match) {
4910 /* Send out whatever is in the cache, but skip duplicates */
4911 if (!match)
4912 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4913 d->last_adv_addr_type, NULL,
4914 d->last_adv_rssi, d->last_adv_flags,
4915 d->last_adv_data,
4916 d->last_adv_data_len, NULL, 0);
4917
4918 /* If the new report will trigger a SCAN_REQ store it for
4919 * later merging.
4920 */
4921 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4922 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4923 rssi, flags, data, len);
4924 return;
4925 }
4926
4927 /* The advertising reports cannot be merged, so clear
4928 * the pending report and send out a device found event.
4929 */
4930 clear_pending_adv_report(hdev);
4931 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4932 rssi, flags, data, len, NULL, 0);
4933 return;
4934 }
4935
4936 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
4937 * the new event is a SCAN_RSP. We can therefore proceed with
4938 * sending a merged device found event.
4939 */
4940 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4941 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4942 d->last_adv_data, d->last_adv_data_len, data, len);
4943 clear_pending_adv_report(hdev);
4944 }
4945
4946 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4947 {
4948 u8 num_reports = skb->data[0];
4949 void *ptr = &skb->data[1];
4950
4951 hci_dev_lock(hdev);
4952
4953 while (num_reports--) {
4954 struct hci_ev_le_advertising_info *ev = ptr;
4955 s8 rssi;
4956
4957 rssi = ev->data[ev->length];
4958 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4959 ev->bdaddr_type, NULL, 0, rssi,
4960 ev->data, ev->length);
4961
4962 ptr += sizeof(*ev) + ev->length + 1;
4963 }
4964
4965 hci_dev_unlock(hdev);
4966 }
4967
4968 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
4969 struct sk_buff *skb)
4970 {
4971 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
4972 struct hci_conn *conn;
4973
4974 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4975
4976 hci_dev_lock(hdev);
4977
4978 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4979 if (conn) {
4980 if (!ev->status)
4981 memcpy(conn->features[0], ev->features, 8);
4982
4983 if (conn->state == BT_CONFIG) {
4984 __u8 status;
4985
4986 /* If the local controller supports slave-initiated
4987 * features exchange, but the remote controller does
4988 * not, then it is possible that the error code 0x1a
4989 * for unsupported remote feature gets returned.
4990 *
4991 * In this specific case, allow the connection to
4992 * transition into connected state and mark it as
4993 * successful.
4994 */
4995 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
4996 !conn->out && ev->status == 0x1a)
4997 status = 0x00;
4998 else
4999 status = ev->status;
5000
5001 conn->state = BT_CONNECTED;
5002 hci_connect_cfm(conn, status);
5003 hci_conn_drop(conn);
5004 }
5005 }
5006
5007 hci_dev_unlock(hdev);
5008 }
5009
5010 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
5011 {
5012 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
5013 struct hci_cp_le_ltk_reply cp;
5014 struct hci_cp_le_ltk_neg_reply neg;
5015 struct hci_conn *conn;
5016 struct smp_ltk *ltk;
5017
5018 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
5019
5020 hci_dev_lock(hdev);
5021
5022 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5023 if (conn == NULL)
5024 goto not_found;
5025
5026 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
5027 if (!ltk)
5028 goto not_found;
5029
5030 if (smp_ltk_is_sc(ltk)) {
5031 /* With SC both EDiv and Rand are set to zero */
5032 if (ev->ediv || ev->rand)
5033 goto not_found;
5034 } else {
5035 /* For non-SC keys check that EDiv and Rand match */
5036 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
5037 goto not_found;
5038 }
5039
5040 memcpy(cp.ltk, ltk->val, ltk->enc_size);
5041 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
5042 cp.handle = cpu_to_le16(conn->handle);
5043
5044 conn->pending_sec_level = smp_ltk_sec_level(ltk);
5045
5046 conn->enc_key_size = ltk->enc_size;
5047
5048 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
5049
5050 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
5051 * temporary key used to encrypt a connection following
5052 * pairing. It is used during the Encrypted Session Setup to
5053 * distribute the keys. Later, security can be re-established
5054 * using a distributed LTK.
5055 */
5056 if (ltk->type == SMP_STK) {
5057 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5058 list_del_rcu(&ltk->list);
5059 kfree_rcu(ltk, rcu);
5060 } else {
5061 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5062 }
5063
5064 hci_dev_unlock(hdev);
5065
5066 return;
5067
5068 not_found:
5069 neg.handle = ev->handle;
5070 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
5071 hci_dev_unlock(hdev);
5072 }
5073
5074 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
5075 u8 reason)
5076 {
5077 struct hci_cp_le_conn_param_req_neg_reply cp;
5078
5079 cp.handle = cpu_to_le16(handle);
5080 cp.reason = reason;
5081
5082 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
5083 &cp);
5084 }
5085
5086 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
5087 struct sk_buff *skb)
5088 {
5089 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
5090 struct hci_cp_le_conn_param_req_reply cp;
5091 struct hci_conn *hcon;
5092 u16 handle, min, max, latency, timeout;
5093
5094 handle = le16_to_cpu(ev->handle);
5095 min = le16_to_cpu(ev->interval_min);
5096 max = le16_to_cpu(ev->interval_max);
5097 latency = le16_to_cpu(ev->latency);
5098 timeout = le16_to_cpu(ev->timeout);
5099
5100 hcon = hci_conn_hash_lookup_handle(hdev, handle);
5101 if (!hcon || hcon->state != BT_CONNECTED)
5102 return send_conn_param_neg_reply(hdev, handle,
5103 HCI_ERROR_UNKNOWN_CONN_ID);
5104
5105 if (hci_check_conn_params(min, max, latency, timeout))
5106 return send_conn_param_neg_reply(hdev, handle,
5107 HCI_ERROR_INVALID_LL_PARAMS);
5108
5109 if (hcon->role == HCI_ROLE_MASTER) {
5110 struct hci_conn_params *params;
5111 u8 store_hint;
5112
5113 hci_dev_lock(hdev);
5114
5115 params = hci_conn_params_lookup(hdev, &hcon->dst,
5116 hcon->dst_type);
5117 if (params) {
5118 params->conn_min_interval = min;
5119 params->conn_max_interval = max;
5120 params->conn_latency = latency;
5121 params->supervision_timeout = timeout;
5122 store_hint = 0x01;
5123 } else{
5124 store_hint = 0x00;
5125 }
5126
5127 hci_dev_unlock(hdev);
5128
5129 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
5130 store_hint, min, max, latency, timeout);
5131 }
5132
5133 cp.handle = ev->handle;
5134 cp.interval_min = ev->interval_min;
5135 cp.interval_max = ev->interval_max;
5136 cp.latency = ev->latency;
5137 cp.timeout = ev->timeout;
5138 cp.min_ce_len = 0;
5139 cp.max_ce_len = 0;
5140
5141 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
5142 }
5143
5144 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
5145 struct sk_buff *skb)
5146 {
5147 u8 num_reports = skb->data[0];
5148 void *ptr = &skb->data[1];
5149
5150 hci_dev_lock(hdev);
5151
5152 while (num_reports--) {
5153 struct hci_ev_le_direct_adv_info *ev = ptr;
5154
5155 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5156 ev->bdaddr_type, &ev->direct_addr,
5157 ev->direct_addr_type, ev->rssi, NULL, 0);
5158
5159 ptr += sizeof(*ev);
5160 }
5161
5162 hci_dev_unlock(hdev);
5163 }
5164
5165 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
5166 {
5167 struct hci_ev_le_meta *le_ev = (void *) skb->data;
5168
5169 skb_pull(skb, sizeof(*le_ev));
5170
5171 switch (le_ev->subevent) {
5172 case HCI_EV_LE_CONN_COMPLETE:
5173 hci_le_conn_complete_evt(hdev, skb);
5174 break;
5175
5176 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
5177 hci_le_conn_update_complete_evt(hdev, skb);
5178 break;
5179
5180 case HCI_EV_LE_ADVERTISING_REPORT:
5181 hci_le_adv_report_evt(hdev, skb);
5182 break;
5183
5184 case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
5185 hci_le_remote_feat_complete_evt(hdev, skb);
5186 break;
5187
5188 case HCI_EV_LE_LTK_REQ:
5189 hci_le_ltk_request_evt(hdev, skb);
5190 break;
5191
5192 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
5193 hci_le_remote_conn_param_req_evt(hdev, skb);
5194 break;
5195
5196 case HCI_EV_LE_DIRECT_ADV_REPORT:
5197 hci_le_direct_adv_report_evt(hdev, skb);
5198 break;
5199
5200 default:
5201 break;
5202 }
5203 }
5204
5205 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
5206 u8 event, struct sk_buff *skb)
5207 {
5208 struct hci_ev_cmd_complete *ev;
5209 struct hci_event_hdr *hdr;
5210
5211 if (!skb)
5212 return false;
5213
5214 if (skb->len < sizeof(*hdr)) {
5215 bt_dev_err(hdev, "too short HCI event");
5216 return false;
5217 }
5218
5219 hdr = (void *) skb->data;
5220 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5221
5222 if (event) {
5223 if (hdr->evt != event)
5224 return false;
5225 return true;
5226 }
5227
5228 /* Check if request ended in Command Status - no way to retreive
5229 * any extra parameters in this case.
5230 */
5231 if (hdr->evt == HCI_EV_CMD_STATUS)
5232 return false;
5233
5234 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
5235 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
5236 hdr->evt);
5237 return false;
5238 }
5239
5240 if (skb->len < sizeof(*ev)) {
5241 bt_dev_err(hdev, "too short cmd_complete event");
5242 return false;
5243 }
5244
5245 ev = (void *) skb->data;
5246 skb_pull(skb, sizeof(*ev));
5247
5248 if (opcode != __le16_to_cpu(ev->opcode)) {
5249 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
5250 __le16_to_cpu(ev->opcode));
5251 return false;
5252 }
5253
5254 return true;
5255 }
5256
5257 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
5258 {
5259 struct hci_event_hdr *hdr = (void *) skb->data;
5260 hci_req_complete_t req_complete = NULL;
5261 hci_req_complete_skb_t req_complete_skb = NULL;
5262 struct sk_buff *orig_skb = NULL;
5263 u8 status = 0, event = hdr->evt, req_evt = 0;
5264 u16 opcode = HCI_OP_NOP;
5265
5266 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) {
5267 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
5268 opcode = __le16_to_cpu(cmd_hdr->opcode);
5269 hci_req_cmd_complete(hdev, opcode, status, &req_complete,
5270 &req_complete_skb);
5271 req_evt = event;
5272 }
5273
5274 /* If it looks like we might end up having to call
5275 * req_complete_skb, store a pristine copy of the skb since the
5276 * various handlers may modify the original one through
5277 * skb_pull() calls, etc.
5278 */
5279 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
5280 event == HCI_EV_CMD_COMPLETE)
5281 orig_skb = skb_clone(skb, GFP_KERNEL);
5282
5283 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5284
5285 switch (event) {
5286 case HCI_EV_INQUIRY_COMPLETE:
5287 hci_inquiry_complete_evt(hdev, skb);
5288 break;
5289
5290 case HCI_EV_INQUIRY_RESULT:
5291 hci_inquiry_result_evt(hdev, skb);
5292 break;
5293
5294 case HCI_EV_CONN_COMPLETE:
5295 hci_conn_complete_evt(hdev, skb);
5296 break;
5297
5298 case HCI_EV_CONN_REQUEST:
5299 hci_conn_request_evt(hdev, skb);
5300 break;
5301
5302 case HCI_EV_DISCONN_COMPLETE:
5303 hci_disconn_complete_evt(hdev, skb);
5304 break;
5305
5306 case HCI_EV_AUTH_COMPLETE:
5307 hci_auth_complete_evt(hdev, skb);
5308 break;
5309
5310 case HCI_EV_REMOTE_NAME:
5311 hci_remote_name_evt(hdev, skb);
5312 break;
5313
5314 case HCI_EV_ENCRYPT_CHANGE:
5315 hci_encrypt_change_evt(hdev, skb);
5316 break;
5317
5318 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
5319 hci_change_link_key_complete_evt(hdev, skb);
5320 break;
5321
5322 case HCI_EV_REMOTE_FEATURES:
5323 hci_remote_features_evt(hdev, skb);
5324 break;
5325
5326 case HCI_EV_CMD_COMPLETE:
5327 hci_cmd_complete_evt(hdev, skb, &opcode, &status,
5328 &req_complete, &req_complete_skb);
5329 break;
5330
5331 case HCI_EV_CMD_STATUS:
5332 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
5333 &req_complete_skb);
5334 break;
5335
5336 case HCI_EV_HARDWARE_ERROR:
5337 hci_hardware_error_evt(hdev, skb);
5338 break;
5339
5340 case HCI_EV_ROLE_CHANGE:
5341 hci_role_change_evt(hdev, skb);
5342 break;
5343
5344 case HCI_EV_NUM_COMP_PKTS:
5345 hci_num_comp_pkts_evt(hdev, skb);
5346 break;
5347
5348 case HCI_EV_MODE_CHANGE:
5349 hci_mode_change_evt(hdev, skb);
5350 break;
5351
5352 case HCI_EV_PIN_CODE_REQ:
5353 hci_pin_code_request_evt(hdev, skb);
5354 break;
5355
5356 case HCI_EV_LINK_KEY_REQ:
5357 hci_link_key_request_evt(hdev, skb);
5358 break;
5359
5360 case HCI_EV_LINK_KEY_NOTIFY:
5361 hci_link_key_notify_evt(hdev, skb);
5362 break;
5363
5364 case HCI_EV_CLOCK_OFFSET:
5365 hci_clock_offset_evt(hdev, skb);
5366 break;
5367
5368 case HCI_EV_PKT_TYPE_CHANGE:
5369 hci_pkt_type_change_evt(hdev, skb);
5370 break;
5371
5372 case HCI_EV_PSCAN_REP_MODE:
5373 hci_pscan_rep_mode_evt(hdev, skb);
5374 break;
5375
5376 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
5377 hci_inquiry_result_with_rssi_evt(hdev, skb);
5378 break;
5379
5380 case HCI_EV_REMOTE_EXT_FEATURES:
5381 hci_remote_ext_features_evt(hdev, skb);
5382 break;
5383
5384 case HCI_EV_SYNC_CONN_COMPLETE:
5385 hci_sync_conn_complete_evt(hdev, skb);
5386 break;
5387
5388 case HCI_EV_EXTENDED_INQUIRY_RESULT:
5389 hci_extended_inquiry_result_evt(hdev, skb);
5390 break;
5391
5392 case HCI_EV_KEY_REFRESH_COMPLETE:
5393 hci_key_refresh_complete_evt(hdev, skb);
5394 break;
5395
5396 case HCI_EV_IO_CAPA_REQUEST:
5397 hci_io_capa_request_evt(hdev, skb);
5398 break;
5399
5400 case HCI_EV_IO_CAPA_REPLY:
5401 hci_io_capa_reply_evt(hdev, skb);
5402 break;
5403
5404 case HCI_EV_USER_CONFIRM_REQUEST:
5405 hci_user_confirm_request_evt(hdev, skb);
5406 break;
5407
5408 case HCI_EV_USER_PASSKEY_REQUEST:
5409 hci_user_passkey_request_evt(hdev, skb);
5410 break;
5411
5412 case HCI_EV_USER_PASSKEY_NOTIFY:
5413 hci_user_passkey_notify_evt(hdev, skb);
5414 break;
5415
5416 case HCI_EV_KEYPRESS_NOTIFY:
5417 hci_keypress_notify_evt(hdev, skb);
5418 break;
5419
5420 case HCI_EV_SIMPLE_PAIR_COMPLETE:
5421 hci_simple_pair_complete_evt(hdev, skb);
5422 break;
5423
5424 case HCI_EV_REMOTE_HOST_FEATURES:
5425 hci_remote_host_features_evt(hdev, skb);
5426 break;
5427
5428 case HCI_EV_LE_META:
5429 hci_le_meta_evt(hdev, skb);
5430 break;
5431
5432 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
5433 hci_remote_oob_data_request_evt(hdev, skb);
5434 break;
5435
5436 #if IS_ENABLED(CONFIG_BT_HS)
5437 case HCI_EV_CHANNEL_SELECTED:
5438 hci_chan_selected_evt(hdev, skb);
5439 break;
5440
5441 case HCI_EV_PHY_LINK_COMPLETE:
5442 hci_phy_link_complete_evt(hdev, skb);
5443 break;
5444
5445 case HCI_EV_LOGICAL_LINK_COMPLETE:
5446 hci_loglink_complete_evt(hdev, skb);
5447 break;
5448
5449 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
5450 hci_disconn_loglink_complete_evt(hdev, skb);
5451 break;
5452
5453 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
5454 hci_disconn_phylink_complete_evt(hdev, skb);
5455 break;
5456 #endif
5457
5458 case HCI_EV_NUM_COMP_BLOCKS:
5459 hci_num_comp_blocks_evt(hdev, skb);
5460 break;
5461
5462 default:
5463 BT_DBG("%s event 0x%2.2x", hdev->name, event);
5464 break;
5465 }
5466
5467 if (req_complete) {
5468 req_complete(hdev, status, opcode);
5469 } else if (req_complete_skb) {
5470 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
5471 kfree_skb(orig_skb);
5472 orig_skb = NULL;
5473 }
5474 req_complete_skb(hdev, status, opcode, orig_skb);
5475 }
5476
5477 kfree_skb(orig_skb);
5478 kfree_skb(skb);
5479 hdev->stat.evt_rx++;
5480 }
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