]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - net/bluetooth/hci_event.c
projects / mirror_ubuntu-zesty-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
[mirror_ubuntu-zesty-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_ERR("Used reserved LE_Scan_Enable param %d", cp->enable);
1192 break;
1193 }
1194
1195 hci_dev_unlock(hdev);
1196 }
1197
1198 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1199 struct sk_buff *skb)
1200 {
1201 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1202
1203 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1204
1205 if (rp->status)
1206 return;
1207
1208 hdev->le_white_list_size = rp->size;
1209 }
1210
1211 static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1212 struct sk_buff *skb)
1213 {
1214 __u8 status = *((__u8 *) skb->data);
1215
1216 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1217
1218 if (status)
1219 return;
1220
1221 hci_bdaddr_list_clear(&hdev->le_white_list);
1222 }
1223
1224 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1225 struct sk_buff *skb)
1226 {
1227 struct hci_cp_le_add_to_white_list *sent;
1228 __u8 status = *((__u8 *) skb->data);
1229
1230 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1231
1232 if (status)
1233 return;
1234
1235 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1236 if (!sent)
1237 return;
1238
1239 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1240 sent->bdaddr_type);
1241 }
1242
1243 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1244 struct sk_buff *skb)
1245 {
1246 struct hci_cp_le_del_from_white_list *sent;
1247 __u8 status = *((__u8 *) skb->data);
1248
1249 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1250
1251 if (status)
1252 return;
1253
1254 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1255 if (!sent)
1256 return;
1257
1258 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1259 sent->bdaddr_type);
1260 }
1261
1262 static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1263 struct sk_buff *skb)
1264 {
1265 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1266
1267 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1268
1269 if (rp->status)
1270 return;
1271
1272 memcpy(hdev->le_states, rp->le_states, 8);
1273 }
1274
1275 static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1276 struct sk_buff *skb)
1277 {
1278 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1279
1280 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1281
1282 if (rp->status)
1283 return;
1284
1285 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1286 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1287 }
1288
1289 static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1290 struct sk_buff *skb)
1291 {
1292 struct hci_cp_le_write_def_data_len *sent;
1293 __u8 status = *((__u8 *) skb->data);
1294
1295 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1296
1297 if (status)
1298 return;
1299
1300 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1301 if (!sent)
1302 return;
1303
1304 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1305 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1306 }
1307
1308 static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1309 struct sk_buff *skb)
1310 {
1311 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1312
1313 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1314
1315 if (rp->status)
1316 return;
1317
1318 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1319 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1320 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1321 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1322 }
1323
1324 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1325 struct sk_buff *skb)
1326 {
1327 struct hci_cp_write_le_host_supported *sent;
1328 __u8 status = *((__u8 *) skb->data);
1329
1330 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1331
1332 if (status)
1333 return;
1334
1335 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1336 if (!sent)
1337 return;
1338
1339 hci_dev_lock(hdev);
1340
1341 if (sent->le) {
1342 hdev->features[1][0] |= LMP_HOST_LE;
1343 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1344 } else {
1345 hdev->features[1][0] &= ~LMP_HOST_LE;
1346 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
1347 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1348 }
1349
1350 if (sent->simul)
1351 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1352 else
1353 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1354
1355 hci_dev_unlock(hdev);
1356 }
1357
1358 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1359 {
1360 struct hci_cp_le_set_adv_param *cp;
1361 u8 status = *((u8 *) skb->data);
1362
1363 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1364
1365 if (status)
1366 return;
1367
1368 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1369 if (!cp)
1370 return;
1371
1372 hci_dev_lock(hdev);
1373 hdev->adv_addr_type = cp->own_address_type;
1374 hci_dev_unlock(hdev);
1375 }
1376
1377 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1378 {
1379 struct hci_rp_read_rssi *rp = (void *) skb->data;
1380 struct hci_conn *conn;
1381
1382 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1383
1384 if (rp->status)
1385 return;
1386
1387 hci_dev_lock(hdev);
1388
1389 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1390 if (conn)
1391 conn->rssi = rp->rssi;
1392
1393 hci_dev_unlock(hdev);
1394 }
1395
1396 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1397 {
1398 struct hci_cp_read_tx_power *sent;
1399 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1400 struct hci_conn *conn;
1401
1402 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1403
1404 if (rp->status)
1405 return;
1406
1407 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1408 if (!sent)
1409 return;
1410
1411 hci_dev_lock(hdev);
1412
1413 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1414 if (!conn)
1415 goto unlock;
1416
1417 switch (sent->type) {
1418 case 0x00:
1419 conn->tx_power = rp->tx_power;
1420 break;
1421 case 0x01:
1422 conn->max_tx_power = rp->tx_power;
1423 break;
1424 }
1425
1426 unlock:
1427 hci_dev_unlock(hdev);
1428 }
1429
1430 static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
1431 {
1432 u8 status = *((u8 *) skb->data);
1433 u8 *mode;
1434
1435 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1436
1437 if (status)
1438 return;
1439
1440 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
1441 if (mode)
1442 hdev->ssp_debug_mode = *mode;
1443 }
1444
1445 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1446 {
1447 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1448
1449 if (status) {
1450 hci_conn_check_pending(hdev);
1451 return;
1452 }
1453
1454 set_bit(HCI_INQUIRY, &hdev->flags);
1455 }
1456
1457 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1458 {
1459 struct hci_cp_create_conn *cp;
1460 struct hci_conn *conn;
1461
1462 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1463
1464 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1465 if (!cp)
1466 return;
1467
1468 hci_dev_lock(hdev);
1469
1470 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1471
1472 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1473
1474 if (status) {
1475 if (conn && conn->state == BT_CONNECT) {
1476 if (status != 0x0c || conn->attempt > 2) {
1477 conn->state = BT_CLOSED;
1478 hci_connect_cfm(conn, status);
1479 hci_conn_del(conn);
1480 } else
1481 conn->state = BT_CONNECT2;
1482 }
1483 } else {
1484 if (!conn) {
1485 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1486 HCI_ROLE_MASTER);
1487 if (!conn)
1488 BT_ERR("No memory for new connection");
1489 }
1490 }
1491
1492 hci_dev_unlock(hdev);
1493 }
1494
1495 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1496 {
1497 struct hci_cp_add_sco *cp;
1498 struct hci_conn *acl, *sco;
1499 __u16 handle;
1500
1501 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1502
1503 if (!status)
1504 return;
1505
1506 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1507 if (!cp)
1508 return;
1509
1510 handle = __le16_to_cpu(cp->handle);
1511
1512 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1513
1514 hci_dev_lock(hdev);
1515
1516 acl = hci_conn_hash_lookup_handle(hdev, handle);
1517 if (acl) {
1518 sco = acl->link;
1519 if (sco) {
1520 sco->state = BT_CLOSED;
1521
1522 hci_connect_cfm(sco, status);
1523 hci_conn_del(sco);
1524 }
1525 }
1526
1527 hci_dev_unlock(hdev);
1528 }
1529
1530 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1531 {
1532 struct hci_cp_auth_requested *cp;
1533 struct hci_conn *conn;
1534
1535 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1536
1537 if (!status)
1538 return;
1539
1540 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1541 if (!cp)
1542 return;
1543
1544 hci_dev_lock(hdev);
1545
1546 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1547 if (conn) {
1548 if (conn->state == BT_CONFIG) {
1549 hci_connect_cfm(conn, status);
1550 hci_conn_drop(conn);
1551 }
1552 }
1553
1554 hci_dev_unlock(hdev);
1555 }
1556
1557 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1558 {
1559 struct hci_cp_set_conn_encrypt *cp;
1560 struct hci_conn *conn;
1561
1562 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1563
1564 if (!status)
1565 return;
1566
1567 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1568 if (!cp)
1569 return;
1570
1571 hci_dev_lock(hdev);
1572
1573 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1574 if (conn) {
1575 if (conn->state == BT_CONFIG) {
1576 hci_connect_cfm(conn, status);
1577 hci_conn_drop(conn);
1578 }
1579 }
1580
1581 hci_dev_unlock(hdev);
1582 }
1583
1584 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1585 struct hci_conn *conn)
1586 {
1587 if (conn->state != BT_CONFIG || !conn->out)
1588 return 0;
1589
1590 if (conn->pending_sec_level == BT_SECURITY_SDP)
1591 return 0;
1592
1593 /* Only request authentication for SSP connections or non-SSP
1594 * devices with sec_level MEDIUM or HIGH or if MITM protection
1595 * is requested.
1596 */
1597 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1598 conn->pending_sec_level != BT_SECURITY_FIPS &&
1599 conn->pending_sec_level != BT_SECURITY_HIGH &&
1600 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1601 return 0;
1602
1603 return 1;
1604 }
1605
1606 static int hci_resolve_name(struct hci_dev *hdev,
1607 struct inquiry_entry *e)
1608 {
1609 struct hci_cp_remote_name_req cp;
1610
1611 memset(&cp, 0, sizeof(cp));
1612
1613 bacpy(&cp.bdaddr, &e->data.bdaddr);
1614 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1615 cp.pscan_mode = e->data.pscan_mode;
1616 cp.clock_offset = e->data.clock_offset;
1617
1618 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1619 }
1620
1621 static bool hci_resolve_next_name(struct hci_dev *hdev)
1622 {
1623 struct discovery_state *discov = &hdev->discovery;
1624 struct inquiry_entry *e;
1625
1626 if (list_empty(&discov->resolve))
1627 return false;
1628
1629 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1630 if (!e)
1631 return false;
1632
1633 if (hci_resolve_name(hdev, e) == 0) {
1634 e->name_state = NAME_PENDING;
1635 return true;
1636 }
1637
1638 return false;
1639 }
1640
1641 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1642 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1643 {
1644 struct discovery_state *discov = &hdev->discovery;
1645 struct inquiry_entry *e;
1646
1647 /* Update the mgmt connected state if necessary. Be careful with
1648 * conn objects that exist but are not (yet) connected however.
1649 * Only those in BT_CONFIG or BT_CONNECTED states can be
1650 * considered connected.
1651 */
1652 if (conn &&
1653 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1654 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1655 mgmt_device_connected(hdev, conn, 0, name, name_len);
1656
1657 if (discov->state == DISCOVERY_STOPPED)
1658 return;
1659
1660 if (discov->state == DISCOVERY_STOPPING)
1661 goto discov_complete;
1662
1663 if (discov->state != DISCOVERY_RESOLVING)
1664 return;
1665
1666 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1667 /* If the device was not found in a list of found devices names of which
1668 * are pending. there is no need to continue resolving a next name as it
1669 * will be done upon receiving another Remote Name Request Complete
1670 * Event */
1671 if (!e)
1672 return;
1673
1674 list_del(&e->list);
1675 if (name) {
1676 e->name_state = NAME_KNOWN;
1677 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1678 e->data.rssi, name, name_len);
1679 } else {
1680 e->name_state = NAME_NOT_KNOWN;
1681 }
1682
1683 if (hci_resolve_next_name(hdev))
1684 return;
1685
1686 discov_complete:
1687 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1688 }
1689
1690 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
1691 {
1692 struct hci_cp_remote_name_req *cp;
1693 struct hci_conn *conn;
1694
1695 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1696
1697 /* If successful wait for the name req complete event before
1698 * checking for the need to do authentication */
1699 if (!status)
1700 return;
1701
1702 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
1703 if (!cp)
1704 return;
1705
1706 hci_dev_lock(hdev);
1707
1708 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1709
1710 if (hci_dev_test_flag(hdev, HCI_MGMT))
1711 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1712
1713 if (!conn)
1714 goto unlock;
1715
1716 if (!hci_outgoing_auth_needed(hdev, conn))
1717 goto unlock;
1718
1719 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1720 struct hci_cp_auth_requested auth_cp;
1721
1722 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
1723
1724 auth_cp.handle = __cpu_to_le16(conn->handle);
1725 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
1726 sizeof(auth_cp), &auth_cp);
1727 }
1728
1729 unlock:
1730 hci_dev_unlock(hdev);
1731 }
1732
1733 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
1734 {
1735 struct hci_cp_read_remote_features *cp;
1736 struct hci_conn *conn;
1737
1738 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1739
1740 if (!status)
1741 return;
1742
1743 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
1744 if (!cp)
1745 return;
1746
1747 hci_dev_lock(hdev);
1748
1749 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1750 if (conn) {
1751 if (conn->state == BT_CONFIG) {
1752 hci_connect_cfm(conn, status);
1753 hci_conn_drop(conn);
1754 }
1755 }
1756
1757 hci_dev_unlock(hdev);
1758 }
1759
1760 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
1761 {
1762 struct hci_cp_read_remote_ext_features *cp;
1763 struct hci_conn *conn;
1764
1765 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1766
1767 if (!status)
1768 return;
1769
1770 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
1771 if (!cp)
1772 return;
1773
1774 hci_dev_lock(hdev);
1775
1776 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1777 if (conn) {
1778 if (conn->state == BT_CONFIG) {
1779 hci_connect_cfm(conn, status);
1780 hci_conn_drop(conn);
1781 }
1782 }
1783
1784 hci_dev_unlock(hdev);
1785 }
1786
1787 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
1788 {
1789 struct hci_cp_setup_sync_conn *cp;
1790 struct hci_conn *acl, *sco;
1791 __u16 handle;
1792
1793 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1794
1795 if (!status)
1796 return;
1797
1798 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
1799 if (!cp)
1800 return;
1801
1802 handle = __le16_to_cpu(cp->handle);
1803
1804 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1805
1806 hci_dev_lock(hdev);
1807
1808 acl = hci_conn_hash_lookup_handle(hdev, handle);
1809 if (acl) {
1810 sco = acl->link;
1811 if (sco) {
1812 sco->state = BT_CLOSED;
1813
1814 hci_connect_cfm(sco, status);
1815 hci_conn_del(sco);
1816 }
1817 }
1818
1819 hci_dev_unlock(hdev);
1820 }
1821
1822 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
1823 {
1824 struct hci_cp_sniff_mode *cp;
1825 struct hci_conn *conn;
1826
1827 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1828
1829 if (!status)
1830 return;
1831
1832 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
1833 if (!cp)
1834 return;
1835
1836 hci_dev_lock(hdev);
1837
1838 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1839 if (conn) {
1840 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1841
1842 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1843 hci_sco_setup(conn, status);
1844 }
1845
1846 hci_dev_unlock(hdev);
1847 }
1848
1849 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
1850 {
1851 struct hci_cp_exit_sniff_mode *cp;
1852 struct hci_conn *conn;
1853
1854 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1855
1856 if (!status)
1857 return;
1858
1859 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
1860 if (!cp)
1861 return;
1862
1863 hci_dev_lock(hdev);
1864
1865 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1866 if (conn) {
1867 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1868
1869 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1870 hci_sco_setup(conn, status);
1871 }
1872
1873 hci_dev_unlock(hdev);
1874 }
1875
1876 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
1877 {
1878 struct hci_cp_disconnect *cp;
1879 struct hci_conn *conn;
1880
1881 if (!status)
1882 return;
1883
1884 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
1885 if (!cp)
1886 return;
1887
1888 hci_dev_lock(hdev);
1889
1890 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1891 if (conn)
1892 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1893 conn->dst_type, status);
1894
1895 hci_dev_unlock(hdev);
1896 }
1897
1898 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
1899 {
1900 struct hci_cp_le_create_conn *cp;
1901 struct hci_conn *conn;
1902
1903 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1904
1905 /* All connection failure handling is taken care of by the
1906 * hci_le_conn_failed function which is triggered by the HCI
1907 * request completion callbacks used for connecting.
1908 */
1909 if (status)
1910 return;
1911
1912 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
1913 if (!cp)
1914 return;
1915
1916 hci_dev_lock(hdev);
1917
1918 conn = hci_conn_hash_lookup_le(hdev, &cp->peer_addr,
1919 cp->peer_addr_type);
1920 if (!conn)
1921 goto unlock;
1922
1923 /* Store the initiator and responder address information which
1924 * is needed for SMP. These values will not change during the
1925 * lifetime of the connection.
1926 */
1927 conn->init_addr_type = cp->own_address_type;
1928 if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
1929 bacpy(&conn->init_addr, &hdev->random_addr);
1930 else
1931 bacpy(&conn->init_addr, &hdev->bdaddr);
1932
1933 conn->resp_addr_type = cp->peer_addr_type;
1934 bacpy(&conn->resp_addr, &cp->peer_addr);
1935
1936 /* We don't want the connection attempt to stick around
1937 * indefinitely since LE doesn't have a page timeout concept
1938 * like BR/EDR. Set a timer for any connection that doesn't use
1939 * the white list for connecting.
1940 */
1941 if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
1942 queue_delayed_work(conn->hdev->workqueue,
1943 &conn->le_conn_timeout,
1944 conn->conn_timeout);
1945
1946 unlock:
1947 hci_dev_unlock(hdev);
1948 }
1949
1950 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
1951 {
1952 struct hci_cp_le_read_remote_features *cp;
1953 struct hci_conn *conn;
1954
1955 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1956
1957 if (!status)
1958 return;
1959
1960 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
1961 if (!cp)
1962 return;
1963
1964 hci_dev_lock(hdev);
1965
1966 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1967 if (conn) {
1968 if (conn->state == BT_CONFIG) {
1969 hci_connect_cfm(conn, status);
1970 hci_conn_drop(conn);
1971 }
1972 }
1973
1974 hci_dev_unlock(hdev);
1975 }
1976
1977 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
1978 {
1979 struct hci_cp_le_start_enc *cp;
1980 struct hci_conn *conn;
1981
1982 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1983
1984 if (!status)
1985 return;
1986
1987 hci_dev_lock(hdev);
1988
1989 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
1990 if (!cp)
1991 goto unlock;
1992
1993 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1994 if (!conn)
1995 goto unlock;
1996
1997 if (conn->state != BT_CONNECTED)
1998 goto unlock;
1999
2000 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2001 hci_conn_drop(conn);
2002
2003 unlock:
2004 hci_dev_unlock(hdev);
2005 }
2006
2007 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2008 {
2009 struct hci_cp_switch_role *cp;
2010 struct hci_conn *conn;
2011
2012 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2013
2014 if (!status)
2015 return;
2016
2017 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2018 if (!cp)
2019 return;
2020
2021 hci_dev_lock(hdev);
2022
2023 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2024 if (conn)
2025 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2026
2027 hci_dev_unlock(hdev);
2028 }
2029
2030 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2031 {
2032 __u8 status = *((__u8 *) skb->data);
2033 struct discovery_state *discov = &hdev->discovery;
2034 struct inquiry_entry *e;
2035
2036 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2037
2038 hci_conn_check_pending(hdev);
2039
2040 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2041 return;
2042
2043 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2044 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2045
2046 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2047 return;
2048
2049 hci_dev_lock(hdev);
2050
2051 if (discov->state != DISCOVERY_FINDING)
2052 goto unlock;
2053
2054 if (list_empty(&discov->resolve)) {
2055 /* When BR/EDR inquiry is active and no LE scanning is in
2056 * progress, then change discovery state to indicate completion.
2057 *
2058 * When running LE scanning and BR/EDR inquiry simultaneously
2059 * and the LE scan already finished, then change the discovery
2060 * state to indicate completion.
2061 */
2062 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2063 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2064 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2065 goto unlock;
2066 }
2067
2068 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2069 if (e && hci_resolve_name(hdev, e) == 0) {
2070 e->name_state = NAME_PENDING;
2071 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2072 } else {
2073 /* When BR/EDR inquiry is active and no LE scanning is in
2074 * progress, then change discovery state to indicate completion.
2075 *
2076 * When running LE scanning and BR/EDR inquiry simultaneously
2077 * and the LE scan already finished, then change the discovery
2078 * state to indicate completion.
2079 */
2080 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2081 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2082 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2083 }
2084
2085 unlock:
2086 hci_dev_unlock(hdev);
2087 }
2088
2089 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2090 {
2091 struct inquiry_data data;
2092 struct inquiry_info *info = (void *) (skb->data + 1);
2093 int num_rsp = *((__u8 *) skb->data);
2094
2095 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2096
2097 if (!num_rsp)
2098 return;
2099
2100 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2101 return;
2102
2103 hci_dev_lock(hdev);
2104
2105 for (; num_rsp; num_rsp--, info++) {
2106 u32 flags;
2107
2108 bacpy(&data.bdaddr, &info->bdaddr);
2109 data.pscan_rep_mode = info->pscan_rep_mode;
2110 data.pscan_period_mode = info->pscan_period_mode;
2111 data.pscan_mode = info->pscan_mode;
2112 memcpy(data.dev_class, info->dev_class, 3);
2113 data.clock_offset = info->clock_offset;
2114 data.rssi = HCI_RSSI_INVALID;
2115 data.ssp_mode = 0x00;
2116
2117 flags = hci_inquiry_cache_update(hdev, &data, false);
2118
2119 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2120 info->dev_class, HCI_RSSI_INVALID,
2121 flags, NULL, 0, NULL, 0);
2122 }
2123
2124 hci_dev_unlock(hdev);
2125 }
2126
2127 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2128 {
2129 struct hci_ev_conn_complete *ev = (void *) skb->data;
2130 struct hci_conn *conn;
2131
2132 BT_DBG("%s", hdev->name);
2133
2134 hci_dev_lock(hdev);
2135
2136 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2137 if (!conn) {
2138 if (ev->link_type != SCO_LINK)
2139 goto unlock;
2140
2141 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2142 if (!conn)
2143 goto unlock;
2144
2145 conn->type = SCO_LINK;
2146 }
2147
2148 if (!ev->status) {
2149 conn->handle = __le16_to_cpu(ev->handle);
2150
2151 if (conn->type == ACL_LINK) {
2152 conn->state = BT_CONFIG;
2153 hci_conn_hold(conn);
2154
2155 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2156 !hci_find_link_key(hdev, &ev->bdaddr))
2157 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2158 else
2159 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2160 } else
2161 conn->state = BT_CONNECTED;
2162
2163 hci_debugfs_create_conn(conn);
2164 hci_conn_add_sysfs(conn);
2165
2166 if (test_bit(HCI_AUTH, &hdev->flags))
2167 set_bit(HCI_CONN_AUTH, &conn->flags);
2168
2169 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2170 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2171
2172 /* Get remote features */
2173 if (conn->type == ACL_LINK) {
2174 struct hci_cp_read_remote_features cp;
2175 cp.handle = ev->handle;
2176 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2177 sizeof(cp), &cp);
2178
2179 hci_req_update_scan(hdev);
2180 }
2181
2182 /* Set packet type for incoming connection */
2183 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2184 struct hci_cp_change_conn_ptype cp;
2185 cp.handle = ev->handle;
2186 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2187 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2188 &cp);
2189 }
2190 } else {
2191 conn->state = BT_CLOSED;
2192 if (conn->type == ACL_LINK)
2193 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2194 conn->dst_type, ev->status);
2195 }
2196
2197 if (conn->type == ACL_LINK)
2198 hci_sco_setup(conn, ev->status);
2199
2200 if (ev->status) {
2201 hci_connect_cfm(conn, ev->status);
2202 hci_conn_del(conn);
2203 } else if (ev->link_type != ACL_LINK)
2204 hci_connect_cfm(conn, ev->status);
2205
2206 unlock:
2207 hci_dev_unlock(hdev);
2208
2209 hci_conn_check_pending(hdev);
2210 }
2211
2212 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2213 {
2214 struct hci_cp_reject_conn_req cp;
2215
2216 bacpy(&cp.bdaddr, bdaddr);
2217 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2218 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2219 }
2220
2221 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2222 {
2223 struct hci_ev_conn_request *ev = (void *) skb->data;
2224 int mask = hdev->link_mode;
2225 struct inquiry_entry *ie;
2226 struct hci_conn *conn;
2227 __u8 flags = 0;
2228
2229 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2230 ev->link_type);
2231
2232 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2233 &flags);
2234
2235 if (!(mask & HCI_LM_ACCEPT)) {
2236 hci_reject_conn(hdev, &ev->bdaddr);
2237 return;
2238 }
2239
2240 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2241 BDADDR_BREDR)) {
2242 hci_reject_conn(hdev, &ev->bdaddr);
2243 return;
2244 }
2245
2246 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2247 * connection. These features are only touched through mgmt so
2248 * only do the checks if HCI_MGMT is set.
2249 */
2250 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
2251 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2252 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2253 BDADDR_BREDR)) {
2254 hci_reject_conn(hdev, &ev->bdaddr);
2255 return;
2256 }
2257
2258 /* Connection accepted */
2259
2260 hci_dev_lock(hdev);
2261
2262 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2263 if (ie)
2264 memcpy(ie->data.dev_class, ev->dev_class, 3);
2265
2266 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2267 &ev->bdaddr);
2268 if (!conn) {
2269 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2270 HCI_ROLE_SLAVE);
2271 if (!conn) {
2272 BT_ERR("No memory for new connection");
2273 hci_dev_unlock(hdev);
2274 return;
2275 }
2276 }
2277
2278 memcpy(conn->dev_class, ev->dev_class, 3);
2279
2280 hci_dev_unlock(hdev);
2281
2282 if (ev->link_type == ACL_LINK ||
2283 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2284 struct hci_cp_accept_conn_req cp;
2285 conn->state = BT_CONNECT;
2286
2287 bacpy(&cp.bdaddr, &ev->bdaddr);
2288
2289 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2290 cp.role = 0x00; /* Become master */
2291 else
2292 cp.role = 0x01; /* Remain slave */
2293
2294 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2295 } else if (!(flags & HCI_PROTO_DEFER)) {
2296 struct hci_cp_accept_sync_conn_req cp;
2297 conn->state = BT_CONNECT;
2298
2299 bacpy(&cp.bdaddr, &ev->bdaddr);
2300 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2301
2302 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2303 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2304 cp.max_latency = cpu_to_le16(0xffff);
2305 cp.content_format = cpu_to_le16(hdev->voice_setting);
2306 cp.retrans_effort = 0xff;
2307
2308 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2309 &cp);
2310 } else {
2311 conn->state = BT_CONNECT2;
2312 hci_connect_cfm(conn, 0);
2313 }
2314 }
2315
2316 static u8 hci_to_mgmt_reason(u8 err)
2317 {
2318 switch (err) {
2319 case HCI_ERROR_CONNECTION_TIMEOUT:
2320 return MGMT_DEV_DISCONN_TIMEOUT;
2321 case HCI_ERROR_REMOTE_USER_TERM:
2322 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2323 case HCI_ERROR_REMOTE_POWER_OFF:
2324 return MGMT_DEV_DISCONN_REMOTE;
2325 case HCI_ERROR_LOCAL_HOST_TERM:
2326 return MGMT_DEV_DISCONN_LOCAL_HOST;
2327 default:
2328 return MGMT_DEV_DISCONN_UNKNOWN;
2329 }
2330 }
2331
2332 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2333 {
2334 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2335 u8 reason;
2336 struct hci_conn_params *params;
2337 struct hci_conn *conn;
2338 bool mgmt_connected;
2339 u8 type;
2340
2341 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2342
2343 hci_dev_lock(hdev);
2344
2345 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2346 if (!conn)
2347 goto unlock;
2348
2349 if (ev->status) {
2350 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2351 conn->dst_type, ev->status);
2352 goto unlock;
2353 }
2354
2355 conn->state = BT_CLOSED;
2356
2357 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2358
2359 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
2360 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
2361 else
2362 reason = hci_to_mgmt_reason(ev->reason);
2363
2364 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2365 reason, mgmt_connected);
2366
2367 if (conn->type == ACL_LINK) {
2368 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2369 hci_remove_link_key(hdev, &conn->dst);
2370
2371 hci_req_update_scan(hdev);
2372 }
2373
2374 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2375 if (params) {
2376 switch (params->auto_connect) {
2377 case HCI_AUTO_CONN_LINK_LOSS:
2378 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2379 break;
2380 /* Fall through */
2381
2382 case HCI_AUTO_CONN_DIRECT:
2383 case HCI_AUTO_CONN_ALWAYS:
2384 list_del_init(&params->action);
2385 list_add(&params->action, &hdev->pend_le_conns);
2386 hci_update_background_scan(hdev);
2387 break;
2388
2389 default:
2390 break;
2391 }
2392 }
2393
2394 type = conn->type;
2395
2396 hci_disconn_cfm(conn, ev->reason);
2397 hci_conn_del(conn);
2398
2399 /* Re-enable advertising if necessary, since it might
2400 * have been disabled by the connection. From the
2401 * HCI_LE_Set_Advertise_Enable command description in
2402 * the core specification (v4.0):
2403 * "The Controller shall continue advertising until the Host
2404 * issues an LE_Set_Advertise_Enable command with
2405 * Advertising_Enable set to 0x00 (Advertising is disabled)
2406 * or until a connection is created or until the Advertising
2407 * is timed out due to Directed Advertising."
2408 */
2409 if (type == LE_LINK)
2410 hci_req_reenable_advertising(hdev);
2411
2412 unlock:
2413 hci_dev_unlock(hdev);
2414 }
2415
2416 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2417 {
2418 struct hci_ev_auth_complete *ev = (void *) skb->data;
2419 struct hci_conn *conn;
2420
2421 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2422
2423 hci_dev_lock(hdev);
2424
2425 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2426 if (!conn)
2427 goto unlock;
2428
2429 if (!ev->status) {
2430 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2431
2432 if (!hci_conn_ssp_enabled(conn) &&
2433 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2434 BT_INFO("re-auth of legacy device is not possible.");
2435 } else {
2436 set_bit(HCI_CONN_AUTH, &conn->flags);
2437 conn->sec_level = conn->pending_sec_level;
2438 }
2439 } else {
2440 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2441 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2442
2443 mgmt_auth_failed(conn, ev->status);
2444 }
2445
2446 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2447 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2448
2449 if (conn->state == BT_CONFIG) {
2450 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2451 struct hci_cp_set_conn_encrypt cp;
2452 cp.handle = ev->handle;
2453 cp.encrypt = 0x01;
2454 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2455 &cp);
2456 } else {
2457 conn->state = BT_CONNECTED;
2458 hci_connect_cfm(conn, ev->status);
2459 hci_conn_drop(conn);
2460 }
2461 } else {
2462 hci_auth_cfm(conn, ev->status);
2463
2464 hci_conn_hold(conn);
2465 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2466 hci_conn_drop(conn);
2467 }
2468
2469 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2470 if (!ev->status) {
2471 struct hci_cp_set_conn_encrypt cp;
2472 cp.handle = ev->handle;
2473 cp.encrypt = 0x01;
2474 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2475 &cp);
2476 } else {
2477 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2478 hci_encrypt_cfm(conn, ev->status, 0x00);
2479 }
2480 }
2481
2482 unlock:
2483 hci_dev_unlock(hdev);
2484 }
2485
2486 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2487 {
2488 struct hci_ev_remote_name *ev = (void *) skb->data;
2489 struct hci_conn *conn;
2490
2491 BT_DBG("%s", hdev->name);
2492
2493 hci_conn_check_pending(hdev);
2494
2495 hci_dev_lock(hdev);
2496
2497 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2498
2499 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2500 goto check_auth;
2501
2502 if (ev->status == 0)
2503 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2504 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2505 else
2506 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2507
2508 check_auth:
2509 if (!conn)
2510 goto unlock;
2511
2512 if (!hci_outgoing_auth_needed(hdev, conn))
2513 goto unlock;
2514
2515 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2516 struct hci_cp_auth_requested cp;
2517
2518 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2519
2520 cp.handle = __cpu_to_le16(conn->handle);
2521 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2522 }
2523
2524 unlock:
2525 hci_dev_unlock(hdev);
2526 }
2527
2528 static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
2529 u16 opcode, struct sk_buff *skb)
2530 {
2531 const struct hci_rp_read_enc_key_size *rp;
2532 struct hci_conn *conn;
2533 u16 handle;
2534
2535 BT_DBG("%s status 0x%02x", hdev->name, status);
2536
2537 if (!skb || skb->len < sizeof(*rp)) {
2538 BT_ERR("%s invalid HCI Read Encryption Key Size response",
2539 hdev->name);
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_ERR("%s failed to read key size for handle %u", hdev->name,
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_ERR("Sending HCI Read Encryption 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 (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3057 queue_work(hdev->workqueue, &hdev->cmd_work);
3058 }
3059
3060 static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
3061 u16 *opcode, u8 *status,
3062 hci_req_complete_t *req_complete,
3063 hci_req_complete_skb_t *req_complete_skb)
3064 {
3065 struct hci_ev_cmd_status *ev = (void *) skb->data;
3066
3067 skb_pull(skb, sizeof(*ev));
3068
3069 *opcode = __le16_to_cpu(ev->opcode);
3070 *status = ev->status;
3071
3072 switch (*opcode) {
3073 case HCI_OP_INQUIRY:
3074 hci_cs_inquiry(hdev, ev->status);
3075 break;
3076
3077 case HCI_OP_CREATE_CONN:
3078 hci_cs_create_conn(hdev, ev->status);
3079 break;
3080
3081 case HCI_OP_DISCONNECT:
3082 hci_cs_disconnect(hdev, ev->status);
3083 break;
3084
3085 case HCI_OP_ADD_SCO:
3086 hci_cs_add_sco(hdev, ev->status);
3087 break;
3088
3089 case HCI_OP_AUTH_REQUESTED:
3090 hci_cs_auth_requested(hdev, ev->status);
3091 break;
3092
3093 case HCI_OP_SET_CONN_ENCRYPT:
3094 hci_cs_set_conn_encrypt(hdev, ev->status);
3095 break;
3096
3097 case HCI_OP_REMOTE_NAME_REQ:
3098 hci_cs_remote_name_req(hdev, ev->status);
3099 break;
3100
3101 case HCI_OP_READ_REMOTE_FEATURES:
3102 hci_cs_read_remote_features(hdev, ev->status);
3103 break;
3104
3105 case HCI_OP_READ_REMOTE_EXT_FEATURES:
3106 hci_cs_read_remote_ext_features(hdev, ev->status);
3107 break;
3108
3109 case HCI_OP_SETUP_SYNC_CONN:
3110 hci_cs_setup_sync_conn(hdev, ev->status);
3111 break;
3112
3113 case HCI_OP_SNIFF_MODE:
3114 hci_cs_sniff_mode(hdev, ev->status);
3115 break;
3116
3117 case HCI_OP_EXIT_SNIFF_MODE:
3118 hci_cs_exit_sniff_mode(hdev, ev->status);
3119 break;
3120
3121 case HCI_OP_SWITCH_ROLE:
3122 hci_cs_switch_role(hdev, ev->status);
3123 break;
3124
3125 case HCI_OP_LE_CREATE_CONN:
3126 hci_cs_le_create_conn(hdev, ev->status);
3127 break;
3128
3129 case HCI_OP_LE_READ_REMOTE_FEATURES:
3130 hci_cs_le_read_remote_features(hdev, ev->status);
3131 break;
3132
3133 case HCI_OP_LE_START_ENC:
3134 hci_cs_le_start_enc(hdev, ev->status);
3135 break;
3136
3137 default:
3138 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3139 break;
3140 }
3141
3142 if (*opcode != HCI_OP_NOP)
3143 cancel_delayed_work(&hdev->cmd_timer);
3144
3145 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3146 atomic_set(&hdev->cmd_cnt, 1);
3147
3148 /* Indicate request completion if the command failed. Also, if
3149 * we're not waiting for a special event and we get a success
3150 * command status we should try to flag the request as completed
3151 * (since for this kind of commands there will not be a command
3152 * complete event).
3153 */
3154 if (ev->status ||
3155 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event))
3156 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
3157 req_complete_skb);
3158
3159 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3160 queue_work(hdev->workqueue, &hdev->cmd_work);
3161 }
3162
3163 static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
3164 {
3165 struct hci_ev_hardware_error *ev = (void *) skb->data;
3166
3167 hdev->hw_error_code = ev->code;
3168
3169 queue_work(hdev->req_workqueue, &hdev->error_reset);
3170 }
3171
3172 static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3173 {
3174 struct hci_ev_role_change *ev = (void *) skb->data;
3175 struct hci_conn *conn;
3176
3177 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3178
3179 hci_dev_lock(hdev);
3180
3181 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3182 if (conn) {
3183 if (!ev->status)
3184 conn->role = ev->role;
3185
3186 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3187
3188 hci_role_switch_cfm(conn, ev->status, ev->role);
3189 }
3190
3191 hci_dev_unlock(hdev);
3192 }
3193
3194 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3195 {
3196 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
3197 int i;
3198
3199 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
3200 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3201 return;
3202 }
3203
3204 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3205 ev->num_hndl * sizeof(struct hci_comp_pkts_info)) {
3206 BT_DBG("%s bad parameters", hdev->name);
3207 return;
3208 }
3209
3210 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
3211
3212 for (i = 0; i < ev->num_hndl; i++) {
3213 struct hci_comp_pkts_info *info = &ev->handles[i];
3214 struct hci_conn *conn;
3215 __u16 handle, count;
3216
3217 handle = __le16_to_cpu(info->handle);
3218 count = __le16_to_cpu(info->count);
3219
3220 conn = hci_conn_hash_lookup_handle(hdev, handle);
3221 if (!conn)
3222 continue;
3223
3224 conn->sent -= count;
3225
3226 switch (conn->type) {
3227 case ACL_LINK:
3228 hdev->acl_cnt += count;
3229 if (hdev->acl_cnt > hdev->acl_pkts)
3230 hdev->acl_cnt = hdev->acl_pkts;
3231 break;
3232
3233 case LE_LINK:
3234 if (hdev->le_pkts) {
3235 hdev->le_cnt += count;
3236 if (hdev->le_cnt > hdev->le_pkts)
3237 hdev->le_cnt = hdev->le_pkts;
3238 } else {
3239 hdev->acl_cnt += count;
3240 if (hdev->acl_cnt > hdev->acl_pkts)
3241 hdev->acl_cnt = hdev->acl_pkts;
3242 }
3243 break;
3244
3245 case SCO_LINK:
3246 hdev->sco_cnt += count;
3247 if (hdev->sco_cnt > hdev->sco_pkts)
3248 hdev->sco_cnt = hdev->sco_pkts;
3249 break;
3250
3251 default:
3252 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3253 break;
3254 }
3255 }
3256
3257 queue_work(hdev->workqueue, &hdev->tx_work);
3258 }
3259
3260 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3261 __u16 handle)
3262 {
3263 struct hci_chan *chan;
3264
3265 switch (hdev->dev_type) {
3266 case HCI_PRIMARY:
3267 return hci_conn_hash_lookup_handle(hdev, handle);
3268 case HCI_AMP:
3269 chan = hci_chan_lookup_handle(hdev, handle);
3270 if (chan)
3271 return chan->conn;
3272 break;
3273 default:
3274 BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type);
3275 break;
3276 }
3277
3278 return NULL;
3279 }
3280
3281 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3282 {
3283 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3284 int i;
3285
3286 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3287 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3288 return;
3289 }
3290
3291 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3292 ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3293 BT_DBG("%s bad parameters", hdev->name);
3294 return;
3295 }
3296
3297 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3298 ev->num_hndl);
3299
3300 for (i = 0; i < ev->num_hndl; i++) {
3301 struct hci_comp_blocks_info *info = &ev->handles[i];
3302 struct hci_conn *conn = NULL;
3303 __u16 handle, block_count;
3304
3305 handle = __le16_to_cpu(info->handle);
3306 block_count = __le16_to_cpu(info->blocks);
3307
3308 conn = __hci_conn_lookup_handle(hdev, handle);
3309 if (!conn)
3310 continue;
3311
3312 conn->sent -= block_count;
3313
3314 switch (conn->type) {
3315 case ACL_LINK:
3316 case AMP_LINK:
3317 hdev->block_cnt += block_count;
3318 if (hdev->block_cnt > hdev->num_blocks)
3319 hdev->block_cnt = hdev->num_blocks;
3320 break;
3321
3322 default:
3323 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3324 break;
3325 }
3326 }
3327
3328 queue_work(hdev->workqueue, &hdev->tx_work);
3329 }
3330
3331 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3332 {
3333 struct hci_ev_mode_change *ev = (void *) skb->data;
3334 struct hci_conn *conn;
3335
3336 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3337
3338 hci_dev_lock(hdev);
3339
3340 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3341 if (conn) {
3342 conn->mode = ev->mode;
3343
3344 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3345 &conn->flags)) {
3346 if (conn->mode == HCI_CM_ACTIVE)
3347 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3348 else
3349 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3350 }
3351
3352 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3353 hci_sco_setup(conn, ev->status);
3354 }
3355
3356 hci_dev_unlock(hdev);
3357 }
3358
3359 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3360 {
3361 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3362 struct hci_conn *conn;
3363
3364 BT_DBG("%s", hdev->name);
3365
3366 hci_dev_lock(hdev);
3367
3368 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3369 if (!conn)
3370 goto unlock;
3371
3372 if (conn->state == BT_CONNECTED) {
3373 hci_conn_hold(conn);
3374 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3375 hci_conn_drop(conn);
3376 }
3377
3378 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3379 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3380 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3381 sizeof(ev->bdaddr), &ev->bdaddr);
3382 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3383 u8 secure;
3384
3385 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3386 secure = 1;
3387 else
3388 secure = 0;
3389
3390 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3391 }
3392
3393 unlock:
3394 hci_dev_unlock(hdev);
3395 }
3396
3397 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3398 {
3399 if (key_type == HCI_LK_CHANGED_COMBINATION)
3400 return;
3401
3402 conn->pin_length = pin_len;
3403 conn->key_type = key_type;
3404
3405 switch (key_type) {
3406 case HCI_LK_LOCAL_UNIT:
3407 case HCI_LK_REMOTE_UNIT:
3408 case HCI_LK_DEBUG_COMBINATION:
3409 return;
3410 case HCI_LK_COMBINATION:
3411 if (pin_len == 16)
3412 conn->pending_sec_level = BT_SECURITY_HIGH;
3413 else
3414 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3415 break;
3416 case HCI_LK_UNAUTH_COMBINATION_P192:
3417 case HCI_LK_UNAUTH_COMBINATION_P256:
3418 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3419 break;
3420 case HCI_LK_AUTH_COMBINATION_P192:
3421 conn->pending_sec_level = BT_SECURITY_HIGH;
3422 break;
3423 case HCI_LK_AUTH_COMBINATION_P256:
3424 conn->pending_sec_level = BT_SECURITY_FIPS;
3425 break;
3426 }
3427 }
3428
3429 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3430 {
3431 struct hci_ev_link_key_req *ev = (void *) skb->data;
3432 struct hci_cp_link_key_reply cp;
3433 struct hci_conn *conn;
3434 struct link_key *key;
3435
3436 BT_DBG("%s", hdev->name);
3437
3438 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3439 return;
3440
3441 hci_dev_lock(hdev);
3442
3443 key = hci_find_link_key(hdev, &ev->bdaddr);
3444 if (!key) {
3445 BT_DBG("%s link key not found for %pMR", hdev->name,
3446 &ev->bdaddr);
3447 goto not_found;
3448 }
3449
3450 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3451 &ev->bdaddr);
3452
3453 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3454 if (conn) {
3455 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3456
3457 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3458 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3459 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3460 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3461 goto not_found;
3462 }
3463
3464 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3465 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3466 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3467 BT_DBG("%s ignoring key unauthenticated for high security",
3468 hdev->name);
3469 goto not_found;
3470 }
3471
3472 conn_set_key(conn, key->type, key->pin_len);
3473 }
3474
3475 bacpy(&cp.bdaddr, &ev->bdaddr);
3476 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3477
3478 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3479
3480 hci_dev_unlock(hdev);
3481
3482 return;
3483
3484 not_found:
3485 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3486 hci_dev_unlock(hdev);
3487 }
3488
3489 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3490 {
3491 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3492 struct hci_conn *conn;
3493 struct link_key *key;
3494 bool persistent;
3495 u8 pin_len = 0;
3496
3497 BT_DBG("%s", hdev->name);
3498
3499 hci_dev_lock(hdev);
3500
3501 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3502 if (!conn)
3503 goto unlock;
3504
3505 hci_conn_hold(conn);
3506 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3507 hci_conn_drop(conn);
3508
3509 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3510 conn_set_key(conn, ev->key_type, conn->pin_length);
3511
3512 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3513 goto unlock;
3514
3515 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3516 ev->key_type, pin_len, &persistent);
3517 if (!key)
3518 goto unlock;
3519
3520 /* Update connection information since adding the key will have
3521 * fixed up the type in the case of changed combination keys.
3522 */
3523 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
3524 conn_set_key(conn, key->type, key->pin_len);
3525
3526 mgmt_new_link_key(hdev, key, persistent);
3527
3528 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3529 * is set. If it's not set simply remove the key from the kernel
3530 * list (we've still notified user space about it but with
3531 * store_hint being 0).
3532 */
3533 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3534 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
3535 list_del_rcu(&key->list);
3536 kfree_rcu(key, rcu);
3537 goto unlock;
3538 }
3539
3540 if (persistent)
3541 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3542 else
3543 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3544
3545 unlock:
3546 hci_dev_unlock(hdev);
3547 }
3548
3549 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3550 {
3551 struct hci_ev_clock_offset *ev = (void *) skb->data;
3552 struct hci_conn *conn;
3553
3554 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3555
3556 hci_dev_lock(hdev);
3557
3558 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3559 if (conn && !ev->status) {
3560 struct inquiry_entry *ie;
3561
3562 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3563 if (ie) {
3564 ie->data.clock_offset = ev->clock_offset;
3565 ie->timestamp = jiffies;
3566 }
3567 }
3568
3569 hci_dev_unlock(hdev);
3570 }
3571
3572 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3573 {
3574 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
3575 struct hci_conn *conn;
3576
3577 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3578
3579 hci_dev_lock(hdev);
3580
3581 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3582 if (conn && !ev->status)
3583 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
3584
3585 hci_dev_unlock(hdev);
3586 }
3587
3588 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3589 {
3590 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3591 struct inquiry_entry *ie;
3592
3593 BT_DBG("%s", hdev->name);
3594
3595 hci_dev_lock(hdev);
3596
3597 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3598 if (ie) {
3599 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
3600 ie->timestamp = jiffies;
3601 }
3602
3603 hci_dev_unlock(hdev);
3604 }
3605
3606 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
3607 struct sk_buff *skb)
3608 {
3609 struct inquiry_data data;
3610 int num_rsp = *((__u8 *) skb->data);
3611
3612 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3613
3614 if (!num_rsp)
3615 return;
3616
3617 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3618 return;
3619
3620 hci_dev_lock(hdev);
3621
3622 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3623 struct inquiry_info_with_rssi_and_pscan_mode *info;
3624 info = (void *) (skb->data + 1);
3625
3626 for (; num_rsp; num_rsp--, info++) {
3627 u32 flags;
3628
3629 bacpy(&data.bdaddr, &info->bdaddr);
3630 data.pscan_rep_mode = info->pscan_rep_mode;
3631 data.pscan_period_mode = info->pscan_period_mode;
3632 data.pscan_mode = info->pscan_mode;
3633 memcpy(data.dev_class, info->dev_class, 3);
3634 data.clock_offset = info->clock_offset;
3635 data.rssi = info->rssi;
3636 data.ssp_mode = 0x00;
3637
3638 flags = hci_inquiry_cache_update(hdev, &data, false);
3639
3640 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3641 info->dev_class, info->rssi,
3642 flags, NULL, 0, NULL, 0);
3643 }
3644 } else {
3645 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
3646
3647 for (; num_rsp; num_rsp--, info++) {
3648 u32 flags;
3649
3650 bacpy(&data.bdaddr, &info->bdaddr);
3651 data.pscan_rep_mode = info->pscan_rep_mode;
3652 data.pscan_period_mode = info->pscan_period_mode;
3653 data.pscan_mode = 0x00;
3654 memcpy(data.dev_class, info->dev_class, 3);
3655 data.clock_offset = info->clock_offset;
3656 data.rssi = info->rssi;
3657 data.ssp_mode = 0x00;
3658
3659 flags = hci_inquiry_cache_update(hdev, &data, false);
3660
3661 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3662 info->dev_class, info->rssi,
3663 flags, NULL, 0, NULL, 0);
3664 }
3665 }
3666
3667 hci_dev_unlock(hdev);
3668 }
3669
3670 static void hci_remote_ext_features_evt(struct hci_dev *hdev,
3671 struct sk_buff *skb)
3672 {
3673 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
3674 struct hci_conn *conn;
3675
3676 BT_DBG("%s", hdev->name);
3677
3678 hci_dev_lock(hdev);
3679
3680 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3681 if (!conn)
3682 goto unlock;
3683
3684 if (ev->page < HCI_MAX_PAGES)
3685 memcpy(conn->features[ev->page], ev->features, 8);
3686
3687 if (!ev->status && ev->page == 0x01) {
3688 struct inquiry_entry *ie;
3689
3690 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3691 if (ie)
3692 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3693
3694 if (ev->features[0] & LMP_HOST_SSP) {
3695 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3696 } else {
3697 /* It is mandatory by the Bluetooth specification that
3698 * Extended Inquiry Results are only used when Secure
3699 * Simple Pairing is enabled, but some devices violate
3700 * this.
3701 *
3702 * To make these devices work, the internal SSP
3703 * enabled flag needs to be cleared if the remote host
3704 * features do not indicate SSP support */
3705 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3706 }
3707
3708 if (ev->features[0] & LMP_HOST_SC)
3709 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3710 }
3711
3712 if (conn->state != BT_CONFIG)
3713 goto unlock;
3714
3715 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3716 struct hci_cp_remote_name_req cp;
3717 memset(&cp, 0, sizeof(cp));
3718 bacpy(&cp.bdaddr, &conn->dst);
3719 cp.pscan_rep_mode = 0x02;
3720 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3721 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3722 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3723
3724 if (!hci_outgoing_auth_needed(hdev, conn)) {
3725 conn->state = BT_CONNECTED;
3726 hci_connect_cfm(conn, ev->status);
3727 hci_conn_drop(conn);
3728 }
3729
3730 unlock:
3731 hci_dev_unlock(hdev);
3732 }
3733
3734 static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
3735 struct sk_buff *skb)
3736 {
3737 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
3738 struct hci_conn *conn;
3739
3740 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3741
3742 hci_dev_lock(hdev);
3743
3744 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3745 if (!conn) {
3746 if (ev->link_type == ESCO_LINK)
3747 goto unlock;
3748
3749 /* When the link type in the event indicates SCO connection
3750 * and lookup of the connection object fails, then check
3751 * if an eSCO connection object exists.
3752 *
3753 * The core limits the synchronous connections to either
3754 * SCO or eSCO. The eSCO connection is preferred and tried
3755 * to be setup first and until successfully established,
3756 * the link type will be hinted as eSCO.
3757 */
3758 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
3759 if (!conn)
3760 goto unlock;
3761 }
3762
3763 switch (ev->status) {
3764 case 0x00:
3765 conn->handle = __le16_to_cpu(ev->handle);
3766 conn->state = BT_CONNECTED;
3767 conn->type = ev->link_type;
3768
3769 hci_debugfs_create_conn(conn);
3770 hci_conn_add_sysfs(conn);
3771 break;
3772
3773 case 0x10: /* Connection Accept Timeout */
3774 case 0x0d: /* Connection Rejected due to Limited Resources */
3775 case 0x11: /* Unsupported Feature or Parameter Value */
3776 case 0x1c: /* SCO interval rejected */
3777 case 0x1a: /* Unsupported Remote Feature */
3778 case 0x1f: /* Unspecified error */
3779 case 0x20: /* Unsupported LMP Parameter value */
3780 if (conn->out) {
3781 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
3782 (hdev->esco_type & EDR_ESCO_MASK);
3783 if (hci_setup_sync(conn, conn->link->handle))
3784 goto unlock;
3785 }
3786 /* fall through */
3787
3788 default:
3789 conn->state = BT_CLOSED;
3790 break;
3791 }
3792
3793 hci_connect_cfm(conn, ev->status);
3794 if (ev->status)
3795 hci_conn_del(conn);
3796
3797 unlock:
3798 hci_dev_unlock(hdev);
3799 }
3800
3801 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
3802 {
3803 size_t parsed = 0;
3804
3805 while (parsed < eir_len) {
3806 u8 field_len = eir[0];
3807
3808 if (field_len == 0)
3809 return parsed;
3810
3811 parsed += field_len + 1;
3812 eir += field_len + 1;
3813 }
3814
3815 return eir_len;
3816 }
3817
3818 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
3819 struct sk_buff *skb)
3820 {
3821 struct inquiry_data data;
3822 struct extended_inquiry_info *info = (void *) (skb->data + 1);
3823 int num_rsp = *((__u8 *) skb->data);
3824 size_t eir_len;
3825
3826 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3827
3828 if (!num_rsp)
3829 return;
3830
3831 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3832 return;
3833
3834 hci_dev_lock(hdev);
3835
3836 for (; num_rsp; num_rsp--, info++) {
3837 u32 flags;
3838 bool name_known;
3839
3840 bacpy(&data.bdaddr, &info->bdaddr);
3841 data.pscan_rep_mode = info->pscan_rep_mode;
3842 data.pscan_period_mode = info->pscan_period_mode;
3843 data.pscan_mode = 0x00;
3844 memcpy(data.dev_class, info->dev_class, 3);
3845 data.clock_offset = info->clock_offset;
3846 data.rssi = info->rssi;
3847 data.ssp_mode = 0x01;
3848
3849 if (hci_dev_test_flag(hdev, HCI_MGMT))
3850 name_known = eir_get_data(info->data,
3851 sizeof(info->data),
3852 EIR_NAME_COMPLETE, NULL);
3853 else
3854 name_known = true;
3855
3856 flags = hci_inquiry_cache_update(hdev, &data, name_known);
3857
3858 eir_len = eir_get_length(info->data, sizeof(info->data));
3859
3860 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3861 info->dev_class, info->rssi,
3862 flags, info->data, eir_len, NULL, 0);
3863 }
3864
3865 hci_dev_unlock(hdev);
3866 }
3867
3868 static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
3869 struct sk_buff *skb)
3870 {
3871 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
3872 struct hci_conn *conn;
3873
3874 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3875 __le16_to_cpu(ev->handle));
3876
3877 hci_dev_lock(hdev);
3878
3879 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3880 if (!conn)
3881 goto unlock;
3882
3883 /* For BR/EDR the necessary steps are taken through the
3884 * auth_complete event.
3885 */
3886 if (conn->type != LE_LINK)
3887 goto unlock;
3888
3889 if (!ev->status)
3890 conn->sec_level = conn->pending_sec_level;
3891
3892 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3893
3894 if (ev->status && conn->state == BT_CONNECTED) {
3895 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3896 hci_conn_drop(conn);
3897 goto unlock;
3898 }
3899
3900 if (conn->state == BT_CONFIG) {
3901 if (!ev->status)
3902 conn->state = BT_CONNECTED;
3903
3904 hci_connect_cfm(conn, ev->status);
3905 hci_conn_drop(conn);
3906 } else {
3907 hci_auth_cfm(conn, ev->status);
3908
3909 hci_conn_hold(conn);
3910 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3911 hci_conn_drop(conn);
3912 }
3913
3914 unlock:
3915 hci_dev_unlock(hdev);
3916 }
3917
3918 static u8 hci_get_auth_req(struct hci_conn *conn)
3919 {
3920 /* If remote requests no-bonding follow that lead */
3921 if (conn->remote_auth == HCI_AT_NO_BONDING ||
3922 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
3923 return conn->remote_auth | (conn->auth_type & 0x01);
3924
3925 /* If both remote and local have enough IO capabilities, require
3926 * MITM protection
3927 */
3928 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
3929 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
3930 return conn->remote_auth | 0x01;
3931
3932 /* No MITM protection possible so ignore remote requirement */
3933 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
3934 }
3935
3936 static u8 bredr_oob_data_present(struct hci_conn *conn)
3937 {
3938 struct hci_dev *hdev = conn->hdev;
3939 struct oob_data *data;
3940
3941 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
3942 if (!data)
3943 return 0x00;
3944
3945 if (bredr_sc_enabled(hdev)) {
3946 /* When Secure Connections is enabled, then just
3947 * return the present value stored with the OOB
3948 * data. The stored value contains the right present
3949 * information. However it can only be trusted when
3950 * not in Secure Connection Only mode.
3951 */
3952 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
3953 return data->present;
3954
3955 /* When Secure Connections Only mode is enabled, then
3956 * the P-256 values are required. If they are not
3957 * available, then do not declare that OOB data is
3958 * present.
3959 */
3960 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
3961 !memcmp(data->hash256, ZERO_KEY, 16))
3962 return 0x00;
3963
3964 return 0x02;
3965 }
3966
3967 /* When Secure Connections is not enabled or actually
3968 * not supported by the hardware, then check that if
3969 * P-192 data values are present.
3970 */
3971 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
3972 !memcmp(data->hash192, ZERO_KEY, 16))
3973 return 0x00;
3974
3975 return 0x01;
3976 }
3977
3978 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3979 {
3980 struct hci_ev_io_capa_request *ev = (void *) skb->data;
3981 struct hci_conn *conn;
3982
3983 BT_DBG("%s", hdev->name);
3984
3985 hci_dev_lock(hdev);
3986
3987 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3988 if (!conn)
3989 goto unlock;
3990
3991 hci_conn_hold(conn);
3992
3993 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3994 goto unlock;
3995
3996 /* Allow pairing if we're pairable, the initiators of the
3997 * pairing or if the remote is not requesting bonding.
3998 */
3999 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
4000 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
4001 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
4002 struct hci_cp_io_capability_reply cp;
4003
4004 bacpy(&cp.bdaddr, &ev->bdaddr);
4005 /* Change the IO capability from KeyboardDisplay
4006 * to DisplayYesNo as it is not supported by BT spec. */
4007 cp.capability = (conn->io_capability == 0x04) ?
4008 HCI_IO_DISPLAY_YESNO : conn->io_capability;
4009
4010 /* If we are initiators, there is no remote information yet */
4011 if (conn->remote_auth == 0xff) {
4012 /* Request MITM protection if our IO caps allow it
4013 * except for the no-bonding case.
4014 */
4015 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4016 conn->auth_type != HCI_AT_NO_BONDING)
4017 conn->auth_type |= 0x01;
4018 } else {
4019 conn->auth_type = hci_get_auth_req(conn);
4020 }
4021
4022 /* If we're not bondable, force one of the non-bondable
4023 * authentication requirement values.
4024 */
4025 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4026 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
4027
4028 cp.authentication = conn->auth_type;
4029 cp.oob_data = bredr_oob_data_present(conn);
4030
4031 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4032 sizeof(cp), &cp);
4033 } else {
4034 struct hci_cp_io_capability_neg_reply cp;
4035
4036 bacpy(&cp.bdaddr, &ev->bdaddr);
4037 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4038
4039 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4040 sizeof(cp), &cp);
4041 }
4042
4043 unlock:
4044 hci_dev_unlock(hdev);
4045 }
4046
4047 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4048 {
4049 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
4050 struct hci_conn *conn;
4051
4052 BT_DBG("%s", hdev->name);
4053
4054 hci_dev_lock(hdev);
4055
4056 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4057 if (!conn)
4058 goto unlock;
4059
4060 conn->remote_cap = ev->capability;
4061 conn->remote_auth = ev->authentication;
4062
4063 unlock:
4064 hci_dev_unlock(hdev);
4065 }
4066
4067 static void hci_user_confirm_request_evt(struct hci_dev *hdev,
4068 struct sk_buff *skb)
4069 {
4070 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4071 int loc_mitm, rem_mitm, confirm_hint = 0;
4072 struct hci_conn *conn;
4073
4074 BT_DBG("%s", hdev->name);
4075
4076 hci_dev_lock(hdev);
4077
4078 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4079 goto unlock;
4080
4081 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4082 if (!conn)
4083 goto unlock;
4084
4085 loc_mitm = (conn->auth_type & 0x01);
4086 rem_mitm = (conn->remote_auth & 0x01);
4087
4088 /* If we require MITM but the remote device can't provide that
4089 * (it has NoInputNoOutput) then reject the confirmation
4090 * request. We check the security level here since it doesn't
4091 * necessarily match conn->auth_type.
4092 */
4093 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
4094 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4095 BT_DBG("Rejecting request: remote device can't provide MITM");
4096 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4097 sizeof(ev->bdaddr), &ev->bdaddr);
4098 goto unlock;
4099 }
4100
4101 /* If no side requires MITM protection; auto-accept */
4102 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
4103 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4104
4105 /* If we're not the initiators request authorization to
4106 * proceed from user space (mgmt_user_confirm with
4107 * confirm_hint set to 1). The exception is if neither
4108 * side had MITM or if the local IO capability is
4109 * NoInputNoOutput, in which case we do auto-accept
4110 */
4111 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4112 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4113 (loc_mitm || rem_mitm)) {
4114 BT_DBG("Confirming auto-accept as acceptor");
4115 confirm_hint = 1;
4116 goto confirm;
4117 }
4118
4119 BT_DBG("Auto-accept of user confirmation with %ums delay",
4120 hdev->auto_accept_delay);
4121
4122 if (hdev->auto_accept_delay > 0) {
4123 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4124 queue_delayed_work(conn->hdev->workqueue,
4125 &conn->auto_accept_work, delay);
4126 goto unlock;
4127 }
4128
4129 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4130 sizeof(ev->bdaddr), &ev->bdaddr);
4131 goto unlock;
4132 }
4133
4134 confirm:
4135 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4136 le32_to_cpu(ev->passkey), confirm_hint);
4137
4138 unlock:
4139 hci_dev_unlock(hdev);
4140 }
4141
4142 static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4143 struct sk_buff *skb)
4144 {
4145 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4146
4147 BT_DBG("%s", hdev->name);
4148
4149 if (hci_dev_test_flag(hdev, HCI_MGMT))
4150 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4151 }
4152
4153 static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4154 struct sk_buff *skb)
4155 {
4156 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4157 struct hci_conn *conn;
4158
4159 BT_DBG("%s", hdev->name);
4160
4161 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4162 if (!conn)
4163 return;
4164
4165 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4166 conn->passkey_entered = 0;
4167
4168 if (hci_dev_test_flag(hdev, HCI_MGMT))
4169 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4170 conn->dst_type, conn->passkey_notify,
4171 conn->passkey_entered);
4172 }
4173
4174 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4175 {
4176 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4177 struct hci_conn *conn;
4178
4179 BT_DBG("%s", hdev->name);
4180
4181 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4182 if (!conn)
4183 return;
4184
4185 switch (ev->type) {
4186 case HCI_KEYPRESS_STARTED:
4187 conn->passkey_entered = 0;
4188 return;
4189
4190 case HCI_KEYPRESS_ENTERED:
4191 conn->passkey_entered++;
4192 break;
4193
4194 case HCI_KEYPRESS_ERASED:
4195 conn->passkey_entered--;
4196 break;
4197
4198 case HCI_KEYPRESS_CLEARED:
4199 conn->passkey_entered = 0;
4200 break;
4201
4202 case HCI_KEYPRESS_COMPLETED:
4203 return;
4204 }
4205
4206 if (hci_dev_test_flag(hdev, HCI_MGMT))
4207 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4208 conn->dst_type, conn->passkey_notify,
4209 conn->passkey_entered);
4210 }
4211
4212 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4213 struct sk_buff *skb)
4214 {
4215 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4216 struct hci_conn *conn;
4217
4218 BT_DBG("%s", hdev->name);
4219
4220 hci_dev_lock(hdev);
4221
4222 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4223 if (!conn)
4224 goto unlock;
4225
4226 /* Reset the authentication requirement to unknown */
4227 conn->remote_auth = 0xff;
4228
4229 /* To avoid duplicate auth_failed events to user space we check
4230 * the HCI_CONN_AUTH_PEND flag which will be set if we
4231 * initiated the authentication. A traditional auth_complete
4232 * event gets always produced as initiator and is also mapped to
4233 * the mgmt_auth_failed event */
4234 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4235 mgmt_auth_failed(conn, ev->status);
4236
4237 hci_conn_drop(conn);
4238
4239 unlock:
4240 hci_dev_unlock(hdev);
4241 }
4242
4243 static void hci_remote_host_features_evt(struct hci_dev *hdev,
4244 struct sk_buff *skb)
4245 {
4246 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4247 struct inquiry_entry *ie;
4248 struct hci_conn *conn;
4249
4250 BT_DBG("%s", hdev->name);
4251
4252 hci_dev_lock(hdev);
4253
4254 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4255 if (conn)
4256 memcpy(conn->features[1], ev->features, 8);
4257
4258 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4259 if (ie)
4260 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4261
4262 hci_dev_unlock(hdev);
4263 }
4264
4265 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4266 struct sk_buff *skb)
4267 {
4268 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4269 struct oob_data *data;
4270
4271 BT_DBG("%s", hdev->name);
4272
4273 hci_dev_lock(hdev);
4274
4275 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4276 goto unlock;
4277
4278 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4279 if (!data) {
4280 struct hci_cp_remote_oob_data_neg_reply cp;
4281
4282 bacpy(&cp.bdaddr, &ev->bdaddr);
4283 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4284 sizeof(cp), &cp);
4285 goto unlock;
4286 }
4287
4288 if (bredr_sc_enabled(hdev)) {
4289 struct hci_cp_remote_oob_ext_data_reply cp;
4290
4291 bacpy(&cp.bdaddr, &ev->bdaddr);
4292 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4293 memset(cp.hash192, 0, sizeof(cp.hash192));
4294 memset(cp.rand192, 0, sizeof(cp.rand192));
4295 } else {
4296 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4297 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4298 }
4299 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4300 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4301
4302 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4303 sizeof(cp), &cp);
4304 } else {
4305 struct hci_cp_remote_oob_data_reply cp;
4306
4307 bacpy(&cp.bdaddr, &ev->bdaddr);
4308 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4309 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4310
4311 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4312 sizeof(cp), &cp);
4313 }
4314
4315 unlock:
4316 hci_dev_unlock(hdev);
4317 }
4318
4319 #if IS_ENABLED(CONFIG_BT_HS)
4320 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4321 {
4322 struct hci_ev_channel_selected *ev = (void *)skb->data;
4323 struct hci_conn *hcon;
4324
4325 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4326
4327 skb_pull(skb, sizeof(*ev));
4328
4329 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4330 if (!hcon)
4331 return;
4332
4333 amp_read_loc_assoc_final_data(hdev, hcon);
4334 }
4335
4336 static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4337 struct sk_buff *skb)
4338 {
4339 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4340 struct hci_conn *hcon, *bredr_hcon;
4341
4342 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4343 ev->status);
4344
4345 hci_dev_lock(hdev);
4346
4347 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4348 if (!hcon) {
4349 hci_dev_unlock(hdev);
4350 return;
4351 }
4352
4353 if (ev->status) {
4354 hci_conn_del(hcon);
4355 hci_dev_unlock(hdev);
4356 return;
4357 }
4358
4359 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4360
4361 hcon->state = BT_CONNECTED;
4362 bacpy(&hcon->dst, &bredr_hcon->dst);
4363
4364 hci_conn_hold(hcon);
4365 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4366 hci_conn_drop(hcon);
4367
4368 hci_debugfs_create_conn(hcon);
4369 hci_conn_add_sysfs(hcon);
4370
4371 amp_physical_cfm(bredr_hcon, hcon);
4372
4373 hci_dev_unlock(hdev);
4374 }
4375
4376 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4377 {
4378 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4379 struct hci_conn *hcon;
4380 struct hci_chan *hchan;
4381 struct amp_mgr *mgr;
4382
4383 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4384 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4385 ev->status);
4386
4387 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4388 if (!hcon)
4389 return;
4390
4391 /* Create AMP hchan */
4392 hchan = hci_chan_create(hcon);
4393 if (!hchan)
4394 return;
4395
4396 hchan->handle = le16_to_cpu(ev->handle);
4397
4398 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4399
4400 mgr = hcon->amp_mgr;
4401 if (mgr && mgr->bredr_chan) {
4402 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4403
4404 l2cap_chan_lock(bredr_chan);
4405
4406 bredr_chan->conn->mtu = hdev->block_mtu;
4407 l2cap_logical_cfm(bredr_chan, hchan, 0);
4408 hci_conn_hold(hcon);
4409
4410 l2cap_chan_unlock(bredr_chan);
4411 }
4412 }
4413
4414 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4415 struct sk_buff *skb)
4416 {
4417 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4418 struct hci_chan *hchan;
4419
4420 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4421 le16_to_cpu(ev->handle), ev->status);
4422
4423 if (ev->status)
4424 return;
4425
4426 hci_dev_lock(hdev);
4427
4428 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4429 if (!hchan)
4430 goto unlock;
4431
4432 amp_destroy_logical_link(hchan, ev->reason);
4433
4434 unlock:
4435 hci_dev_unlock(hdev);
4436 }
4437
4438 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4439 struct sk_buff *skb)
4440 {
4441 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4442 struct hci_conn *hcon;
4443
4444 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4445
4446 if (ev->status)
4447 return;
4448
4449 hci_dev_lock(hdev);
4450
4451 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4452 if (hcon) {
4453 hcon->state = BT_CLOSED;
4454 hci_conn_del(hcon);
4455 }
4456
4457 hci_dev_unlock(hdev);
4458 }
4459 #endif
4460
4461 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4462 {
4463 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4464 struct hci_conn_params *params;
4465 struct hci_conn *conn;
4466 struct smp_irk *irk;
4467 u8 addr_type;
4468
4469 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4470
4471 hci_dev_lock(hdev);
4472
4473 /* All controllers implicitly stop advertising in the event of a
4474 * connection, so ensure that the state bit is cleared.
4475 */
4476 hci_dev_clear_flag(hdev, HCI_LE_ADV);
4477
4478 conn = hci_lookup_le_connect(hdev);
4479 if (!conn) {
4480 conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4481 if (!conn) {
4482 BT_ERR("No memory for new connection");
4483 goto unlock;
4484 }
4485
4486 conn->dst_type = ev->bdaddr_type;
4487
4488 /* If we didn't have a hci_conn object previously
4489 * but we're in master role this must be something
4490 * initiated using a white list. Since white list based
4491 * connections are not "first class citizens" we don't
4492 * have full tracking of them. Therefore, we go ahead
4493 * with a "best effort" approach of determining the
4494 * initiator address based on the HCI_PRIVACY flag.
4495 */
4496 if (conn->out) {
4497 conn->resp_addr_type = ev->bdaddr_type;
4498 bacpy(&conn->resp_addr, &ev->bdaddr);
4499 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
4500 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4501 bacpy(&conn->init_addr, &hdev->rpa);
4502 } else {
4503 hci_copy_identity_address(hdev,
4504 &conn->init_addr,
4505 &conn->init_addr_type);
4506 }
4507 }
4508 } else {
4509 cancel_delayed_work(&conn->le_conn_timeout);
4510 }
4511
4512 if (!conn->out) {
4513 /* Set the responder (our side) address type based on
4514 * the advertising address type.
4515 */
4516 conn->resp_addr_type = hdev->adv_addr_type;
4517 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
4518 bacpy(&conn->resp_addr, &hdev->random_addr);
4519 else
4520 bacpy(&conn->resp_addr, &hdev->bdaddr);
4521
4522 conn->init_addr_type = ev->bdaddr_type;
4523 bacpy(&conn->init_addr, &ev->bdaddr);
4524
4525 /* For incoming connections, set the default minimum
4526 * and maximum connection interval. They will be used
4527 * to check if the parameters are in range and if not
4528 * trigger the connection update procedure.
4529 */
4530 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4531 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4532 }
4533
4534 /* Lookup the identity address from the stored connection
4535 * address and address type.
4536 *
4537 * When establishing connections to an identity address, the
4538 * connection procedure will store the resolvable random
4539 * address first. Now if it can be converted back into the
4540 * identity address, start using the identity address from
4541 * now on.
4542 */
4543 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4544 if (irk) {
4545 bacpy(&conn->dst, &irk->bdaddr);
4546 conn->dst_type = irk->addr_type;
4547 }
4548
4549 if (ev->status) {
4550 hci_le_conn_failed(conn, ev->status);
4551 goto unlock;
4552 }
4553
4554 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
4555 addr_type = BDADDR_LE_PUBLIC;
4556 else
4557 addr_type = BDADDR_LE_RANDOM;
4558
4559 /* Drop the connection if the device is blocked */
4560 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
4561 hci_conn_drop(conn);
4562 goto unlock;
4563 }
4564
4565 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4566 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4567
4568 conn->sec_level = BT_SECURITY_LOW;
4569 conn->handle = __le16_to_cpu(ev->handle);
4570 conn->state = BT_CONFIG;
4571
4572 conn->le_conn_interval = le16_to_cpu(ev->interval);
4573 conn->le_conn_latency = le16_to_cpu(ev->latency);
4574 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4575
4576 hci_debugfs_create_conn(conn);
4577 hci_conn_add_sysfs(conn);
4578
4579 if (!ev->status) {
4580 /* The remote features procedure is defined for master
4581 * role only. So only in case of an initiated connection
4582 * request the remote features.
4583 *
4584 * If the local controller supports slave-initiated features
4585 * exchange, then requesting the remote features in slave
4586 * role is possible. Otherwise just transition into the
4587 * connected state without requesting the remote features.
4588 */
4589 if (conn->out ||
4590 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
4591 struct hci_cp_le_read_remote_features cp;
4592
4593 cp.handle = __cpu_to_le16(conn->handle);
4594
4595 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
4596 sizeof(cp), &cp);
4597
4598 hci_conn_hold(conn);
4599 } else {
4600 conn->state = BT_CONNECTED;
4601 hci_connect_cfm(conn, ev->status);
4602 }
4603 } else {
4604 hci_connect_cfm(conn, ev->status);
4605 }
4606
4607 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
4608 conn->dst_type);
4609 if (params) {
4610 list_del_init(&params->action);
4611 if (params->conn) {
4612 hci_conn_drop(params->conn);
4613 hci_conn_put(params->conn);
4614 params->conn = NULL;
4615 }
4616 }
4617
4618 unlock:
4619 hci_update_background_scan(hdev);
4620 hci_dev_unlock(hdev);
4621 }
4622
4623 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
4624 struct sk_buff *skb)
4625 {
4626 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
4627 struct hci_conn *conn;
4628
4629 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4630
4631 if (ev->status)
4632 return;
4633
4634 hci_dev_lock(hdev);
4635
4636 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4637 if (conn) {
4638 conn->le_conn_interval = le16_to_cpu(ev->interval);
4639 conn->le_conn_latency = le16_to_cpu(ev->latency);
4640 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4641 }
4642
4643 hci_dev_unlock(hdev);
4644 }
4645
4646 /* This function requires the caller holds hdev->lock */
4647 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
4648 bdaddr_t *addr,
4649 u8 addr_type, u8 adv_type)
4650 {
4651 struct hci_conn *conn;
4652 struct hci_conn_params *params;
4653
4654 /* If the event is not connectable don't proceed further */
4655 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4656 return NULL;
4657
4658 /* Ignore if the device is blocked */
4659 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4660 return NULL;
4661
4662 /* Most controller will fail if we try to create new connections
4663 * while we have an existing one in slave role.
4664 */
4665 if (hdev->conn_hash.le_num_slave > 0)
4666 return NULL;
4667
4668 /* If we're not connectable only connect devices that we have in
4669 * our pend_le_conns list.
4670 */
4671 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
4672 addr_type);
4673 if (!params)
4674 return NULL;
4675
4676 if (!params->explicit_connect) {
4677 switch (params->auto_connect) {
4678 case HCI_AUTO_CONN_DIRECT:
4679 /* Only devices advertising with ADV_DIRECT_IND are
4680 * triggering a connection attempt. This is allowing
4681 * incoming connections from slave devices.
4682 */
4683 if (adv_type != LE_ADV_DIRECT_IND)
4684 return NULL;
4685 break;
4686 case HCI_AUTO_CONN_ALWAYS:
4687 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
4688 * are triggering a connection attempt. This means
4689 * that incoming connectioms from slave device are
4690 * accepted and also outgoing connections to slave
4691 * devices are established when found.
4692 */
4693 break;
4694 default:
4695 return NULL;
4696 }
4697 }
4698
4699 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4700 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER);
4701 if (!IS_ERR(conn)) {
4702 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
4703 * by higher layer that tried to connect, if no then
4704 * store the pointer since we don't really have any
4705 * other owner of the object besides the params that
4706 * triggered it. This way we can abort the connection if
4707 * the parameters get removed and keep the reference
4708 * count consistent once the connection is established.
4709 */
4710
4711 if (!params->explicit_connect)
4712 params->conn = hci_conn_get(conn);
4713
4714 return conn;
4715 }
4716
4717 switch (PTR_ERR(conn)) {
4718 case -EBUSY:
4719 /* If hci_connect() returns -EBUSY it means there is already
4720 * an LE connection attempt going on. Since controllers don't
4721 * support more than one connection attempt at the time, we
4722 * don't consider this an error case.
4723 */
4724 break;
4725 default:
4726 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4727 return NULL;
4728 }
4729
4730 return NULL;
4731 }
4732
4733 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4734 u8 bdaddr_type, bdaddr_t *direct_addr,
4735 u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
4736 {
4737 struct discovery_state *d = &hdev->discovery;
4738 struct smp_irk *irk;
4739 struct hci_conn *conn;
4740 bool match;
4741 u32 flags;
4742 u8 *ptr, real_len;
4743
4744 switch (type) {
4745 case LE_ADV_IND:
4746 case LE_ADV_DIRECT_IND:
4747 case LE_ADV_SCAN_IND:
4748 case LE_ADV_NONCONN_IND:
4749 case LE_ADV_SCAN_RSP:
4750 break;
4751 default:
4752 BT_ERR_RATELIMITED("Unknown advetising packet type: 0x%02x",
4753 type);
4754 return;
4755 }
4756
4757 /* Find the end of the data in case the report contains padded zero
4758 * bytes at the end causing an invalid length value.
4759 *
4760 * When data is NULL, len is 0 so there is no need for extra ptr
4761 * check as 'ptr < data + 0' is already false in such case.
4762 */
4763 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
4764 if (ptr + 1 + *ptr > data + len)
4765 break;
4766 }
4767
4768 real_len = ptr - data;
4769
4770 /* Adjust for actual length */
4771 if (len != real_len) {
4772 BT_ERR_RATELIMITED("%s advertising data length corrected",
4773 hdev->name);
4774 len = real_len;
4775 }
4776
4777 /* If the direct address is present, then this report is from
4778 * a LE Direct Advertising Report event. In that case it is
4779 * important to see if the address is matching the local
4780 * controller address.
4781 */
4782 if (direct_addr) {
4783 /* Only resolvable random addresses are valid for these
4784 * kind of reports and others can be ignored.
4785 */
4786 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
4787 return;
4788
4789 /* If the controller is not using resolvable random
4790 * addresses, then this report can be ignored.
4791 */
4792 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
4793 return;
4794
4795 /* If the local IRK of the controller does not match
4796 * with the resolvable random address provided, then
4797 * this report can be ignored.
4798 */
4799 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
4800 return;
4801 }
4802
4803 /* Check if we need to convert to identity address */
4804 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
4805 if (irk) {
4806 bdaddr = &irk->bdaddr;
4807 bdaddr_type = irk->addr_type;
4808 }
4809
4810 /* Check if we have been requested to connect to this device */
4811 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type);
4812 if (conn && type == LE_ADV_IND) {
4813 /* Store report for later inclusion by
4814 * mgmt_device_connected
4815 */
4816 memcpy(conn->le_adv_data, data, len);
4817 conn->le_adv_data_len = len;
4818 }
4819
4820 /* Passive scanning shouldn't trigger any device found events,
4821 * except for devices marked as CONN_REPORT for which we do send
4822 * device found events.
4823 */
4824 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4825 if (type == LE_ADV_DIRECT_IND)
4826 return;
4827
4828 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
4829 bdaddr, bdaddr_type))
4830 return;
4831
4832 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
4833 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4834 else
4835 flags = 0;
4836 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4837 rssi, flags, data, len, NULL, 0);
4838 return;
4839 }
4840
4841 /* When receiving non-connectable or scannable undirected
4842 * advertising reports, this means that the remote device is
4843 * not connectable and then clearly indicate this in the
4844 * device found event.
4845 *
4846 * When receiving a scan response, then there is no way to
4847 * know if the remote device is connectable or not. However
4848 * since scan responses are merged with a previously seen
4849 * advertising report, the flags field from that report
4850 * will be used.
4851 *
4852 * In the really unlikely case that a controller get confused
4853 * and just sends a scan response event, then it is marked as
4854 * not connectable as well.
4855 */
4856 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
4857 type == LE_ADV_SCAN_RSP)
4858 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4859 else
4860 flags = 0;
4861
4862 /* If there's nothing pending either store the data from this
4863 * event or send an immediate device found event if the data
4864 * should not be stored for later.
4865 */
4866 if (!has_pending_adv_report(hdev)) {
4867 /* If the report will trigger a SCAN_REQ store it for
4868 * later merging.
4869 */
4870 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4871 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4872 rssi, flags, data, len);
4873 return;
4874 }
4875
4876 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4877 rssi, flags, data, len, NULL, 0);
4878 return;
4879 }
4880
4881 /* Check if the pending report is for the same device as the new one */
4882 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
4883 bdaddr_type == d->last_adv_addr_type);
4884
4885 /* If the pending data doesn't match this report or this isn't a
4886 * scan response (e.g. we got a duplicate ADV_IND) then force
4887 * sending of the pending data.
4888 */
4889 if (type != LE_ADV_SCAN_RSP || !match) {
4890 /* Send out whatever is in the cache, but skip duplicates */
4891 if (!match)
4892 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4893 d->last_adv_addr_type, NULL,
4894 d->last_adv_rssi, d->last_adv_flags,
4895 d->last_adv_data,
4896 d->last_adv_data_len, NULL, 0);
4897
4898 /* If the new report will trigger a SCAN_REQ store it for
4899 * later merging.
4900 */
4901 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4902 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4903 rssi, flags, data, len);
4904 return;
4905 }
4906
4907 /* The advertising reports cannot be merged, so clear
4908 * the pending report and send out a device found event.
4909 */
4910 clear_pending_adv_report(hdev);
4911 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4912 rssi, flags, data, len, NULL, 0);
4913 return;
4914 }
4915
4916 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
4917 * the new event is a SCAN_RSP. We can therefore proceed with
4918 * sending a merged device found event.
4919 */
4920 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4921 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4922 d->last_adv_data, d->last_adv_data_len, data, len);
4923 clear_pending_adv_report(hdev);
4924 }
4925
4926 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4927 {
4928 u8 num_reports = skb->data[0];
4929 void *ptr = &skb->data[1];
4930
4931 hci_dev_lock(hdev);
4932
4933 while (num_reports--) {
4934 struct hci_ev_le_advertising_info *ev = ptr;
4935 s8 rssi;
4936
4937 rssi = ev->data[ev->length];
4938 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4939 ev->bdaddr_type, NULL, 0, rssi,
4940 ev->data, ev->length);
4941
4942 ptr += sizeof(*ev) + ev->length + 1;
4943 }
4944
4945 hci_dev_unlock(hdev);
4946 }
4947
4948 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
4949 struct sk_buff *skb)
4950 {
4951 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
4952 struct hci_conn *conn;
4953
4954 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4955
4956 hci_dev_lock(hdev);
4957
4958 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4959 if (conn) {
4960 if (!ev->status)
4961 memcpy(conn->features[0], ev->features, 8);
4962
4963 if (conn->state == BT_CONFIG) {
4964 __u8 status;
4965
4966 /* If the local controller supports slave-initiated
4967 * features exchange, but the remote controller does
4968 * not, then it is possible that the error code 0x1a
4969 * for unsupported remote feature gets returned.
4970 *
4971 * In this specific case, allow the connection to
4972 * transition into connected state and mark it as
4973 * successful.
4974 */
4975 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
4976 !conn->out && ev->status == 0x1a)
4977 status = 0x00;
4978 else
4979 status = ev->status;
4980
4981 conn->state = BT_CONNECTED;
4982 hci_connect_cfm(conn, status);
4983 hci_conn_drop(conn);
4984 }
4985 }
4986
4987 hci_dev_unlock(hdev);
4988 }
4989
4990 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4991 {
4992 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
4993 struct hci_cp_le_ltk_reply cp;
4994 struct hci_cp_le_ltk_neg_reply neg;
4995 struct hci_conn *conn;
4996 struct smp_ltk *ltk;
4997
4998 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
4999
5000 hci_dev_lock(hdev);
5001
5002 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5003 if (conn == NULL)
5004 goto not_found;
5005
5006 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
5007 if (!ltk)
5008 goto not_found;
5009
5010 if (smp_ltk_is_sc(ltk)) {
5011 /* With SC both EDiv and Rand are set to zero */
5012 if (ev->ediv || ev->rand)
5013 goto not_found;
5014 } else {
5015 /* For non-SC keys check that EDiv and Rand match */
5016 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
5017 goto not_found;
5018 }
5019
5020 memcpy(cp.ltk, ltk->val, ltk->enc_size);
5021 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
5022 cp.handle = cpu_to_le16(conn->handle);
5023
5024 conn->pending_sec_level = smp_ltk_sec_level(ltk);
5025
5026 conn->enc_key_size = ltk->enc_size;
5027
5028 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
5029
5030 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
5031 * temporary key used to encrypt a connection following
5032 * pairing. It is used during the Encrypted Session Setup to
5033 * distribute the keys. Later, security can be re-established
5034 * using a distributed LTK.
5035 */
5036 if (ltk->type == SMP_STK) {
5037 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5038 list_del_rcu(&ltk->list);
5039 kfree_rcu(ltk, rcu);
5040 } else {
5041 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5042 }
5043
5044 hci_dev_unlock(hdev);
5045
5046 return;
5047
5048 not_found:
5049 neg.handle = ev->handle;
5050 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
5051 hci_dev_unlock(hdev);
5052 }
5053
5054 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
5055 u8 reason)
5056 {
5057 struct hci_cp_le_conn_param_req_neg_reply cp;
5058
5059 cp.handle = cpu_to_le16(handle);
5060 cp.reason = reason;
5061
5062 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
5063 &cp);
5064 }
5065
5066 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
5067 struct sk_buff *skb)
5068 {
5069 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
5070 struct hci_cp_le_conn_param_req_reply cp;
5071 struct hci_conn *hcon;
5072 u16 handle, min, max, latency, timeout;
5073
5074 handle = le16_to_cpu(ev->handle);
5075 min = le16_to_cpu(ev->interval_min);
5076 max = le16_to_cpu(ev->interval_max);
5077 latency = le16_to_cpu(ev->latency);
5078 timeout = le16_to_cpu(ev->timeout);
5079
5080 hcon = hci_conn_hash_lookup_handle(hdev, handle);
5081 if (!hcon || hcon->state != BT_CONNECTED)
5082 return send_conn_param_neg_reply(hdev, handle,
5083 HCI_ERROR_UNKNOWN_CONN_ID);
5084
5085 if (hci_check_conn_params(min, max, latency, timeout))
5086 return send_conn_param_neg_reply(hdev, handle,
5087 HCI_ERROR_INVALID_LL_PARAMS);
5088
5089 if (hcon->role == HCI_ROLE_MASTER) {
5090 struct hci_conn_params *params;
5091 u8 store_hint;
5092
5093 hci_dev_lock(hdev);
5094
5095 params = hci_conn_params_lookup(hdev, &hcon->dst,
5096 hcon->dst_type);
5097 if (params) {
5098 params->conn_min_interval = min;
5099 params->conn_max_interval = max;
5100 params->conn_latency = latency;
5101 params->supervision_timeout = timeout;
5102 store_hint = 0x01;
5103 } else{
5104 store_hint = 0x00;
5105 }
5106
5107 hci_dev_unlock(hdev);
5108
5109 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
5110 store_hint, min, max, latency, timeout);
5111 }
5112
5113 cp.handle = ev->handle;
5114 cp.interval_min = ev->interval_min;
5115 cp.interval_max = ev->interval_max;
5116 cp.latency = ev->latency;
5117 cp.timeout = ev->timeout;
5118 cp.min_ce_len = 0;
5119 cp.max_ce_len = 0;
5120
5121 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
5122 }
5123
5124 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
5125 struct sk_buff *skb)
5126 {
5127 u8 num_reports = skb->data[0];
5128 void *ptr = &skb->data[1];
5129
5130 hci_dev_lock(hdev);
5131
5132 while (num_reports--) {
5133 struct hci_ev_le_direct_adv_info *ev = ptr;
5134
5135 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5136 ev->bdaddr_type, &ev->direct_addr,
5137 ev->direct_addr_type, ev->rssi, NULL, 0);
5138
5139 ptr += sizeof(*ev);
5140 }
5141
5142 hci_dev_unlock(hdev);
5143 }
5144
5145 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
5146 {
5147 struct hci_ev_le_meta *le_ev = (void *) skb->data;
5148
5149 skb_pull(skb, sizeof(*le_ev));
5150
5151 switch (le_ev->subevent) {
5152 case HCI_EV_LE_CONN_COMPLETE:
5153 hci_le_conn_complete_evt(hdev, skb);
5154 break;
5155
5156 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
5157 hci_le_conn_update_complete_evt(hdev, skb);
5158 break;
5159
5160 case HCI_EV_LE_ADVERTISING_REPORT:
5161 hci_le_adv_report_evt(hdev, skb);
5162 break;
5163
5164 case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
5165 hci_le_remote_feat_complete_evt(hdev, skb);
5166 break;
5167
5168 case HCI_EV_LE_LTK_REQ:
5169 hci_le_ltk_request_evt(hdev, skb);
5170 break;
5171
5172 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
5173 hci_le_remote_conn_param_req_evt(hdev, skb);
5174 break;
5175
5176 case HCI_EV_LE_DIRECT_ADV_REPORT:
5177 hci_le_direct_adv_report_evt(hdev, skb);
5178 break;
5179
5180 default:
5181 break;
5182 }
5183 }
5184
5185 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
5186 u8 event, struct sk_buff *skb)
5187 {
5188 struct hci_ev_cmd_complete *ev;
5189 struct hci_event_hdr *hdr;
5190
5191 if (!skb)
5192 return false;
5193
5194 if (skb->len < sizeof(*hdr)) {
5195 BT_ERR("Too short HCI event");
5196 return false;
5197 }
5198
5199 hdr = (void *) skb->data;
5200 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5201
5202 if (event) {
5203 if (hdr->evt != event)
5204 return false;
5205 return true;
5206 }
5207
5208 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
5209 BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
5210 return false;
5211 }
5212
5213 if (skb->len < sizeof(*ev)) {
5214 BT_ERR("Too short cmd_complete event");
5215 return false;
5216 }
5217
5218 ev = (void *) skb->data;
5219 skb_pull(skb, sizeof(*ev));
5220
5221 if (opcode != __le16_to_cpu(ev->opcode)) {
5222 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
5223 __le16_to_cpu(ev->opcode));
5224 return false;
5225 }
5226
5227 return true;
5228 }
5229
5230 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
5231 {
5232 struct hci_event_hdr *hdr = (void *) skb->data;
5233 hci_req_complete_t req_complete = NULL;
5234 hci_req_complete_skb_t req_complete_skb = NULL;
5235 struct sk_buff *orig_skb = NULL;
5236 u8 status = 0, event = hdr->evt, req_evt = 0;
5237 u16 opcode = HCI_OP_NOP;
5238
5239 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) {
5240 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
5241 opcode = __le16_to_cpu(cmd_hdr->opcode);
5242 hci_req_cmd_complete(hdev, opcode, status, &req_complete,
5243 &req_complete_skb);
5244 req_evt = event;
5245 }
5246
5247 /* If it looks like we might end up having to call
5248 * req_complete_skb, store a pristine copy of the skb since the
5249 * various handlers may modify the original one through
5250 * skb_pull() calls, etc.
5251 */
5252 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
5253 event == HCI_EV_CMD_COMPLETE)
5254 orig_skb = skb_clone(skb, GFP_KERNEL);
5255
5256 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5257
5258 switch (event) {
5259 case HCI_EV_INQUIRY_COMPLETE:
5260 hci_inquiry_complete_evt(hdev, skb);
5261 break;
5262
5263 case HCI_EV_INQUIRY_RESULT:
5264 hci_inquiry_result_evt(hdev, skb);
5265 break;
5266
5267 case HCI_EV_CONN_COMPLETE:
5268 hci_conn_complete_evt(hdev, skb);
5269 break;
5270
5271 case HCI_EV_CONN_REQUEST:
5272 hci_conn_request_evt(hdev, skb);
5273 break;
5274
5275 case HCI_EV_DISCONN_COMPLETE:
5276 hci_disconn_complete_evt(hdev, skb);
5277 break;
5278
5279 case HCI_EV_AUTH_COMPLETE:
5280 hci_auth_complete_evt(hdev, skb);
5281 break;
5282
5283 case HCI_EV_REMOTE_NAME:
5284 hci_remote_name_evt(hdev, skb);
5285 break;
5286
5287 case HCI_EV_ENCRYPT_CHANGE:
5288 hci_encrypt_change_evt(hdev, skb);
5289 break;
5290
5291 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
5292 hci_change_link_key_complete_evt(hdev, skb);
5293 break;
5294
5295 case HCI_EV_REMOTE_FEATURES:
5296 hci_remote_features_evt(hdev, skb);
5297 break;
5298
5299 case HCI_EV_CMD_COMPLETE:
5300 hci_cmd_complete_evt(hdev, skb, &opcode, &status,
5301 &req_complete, &req_complete_skb);
5302 break;
5303
5304 case HCI_EV_CMD_STATUS:
5305 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
5306 &req_complete_skb);
5307 break;
5308
5309 case HCI_EV_HARDWARE_ERROR:
5310 hci_hardware_error_evt(hdev, skb);
5311 break;
5312
5313 case HCI_EV_ROLE_CHANGE:
5314 hci_role_change_evt(hdev, skb);
5315 break;
5316
5317 case HCI_EV_NUM_COMP_PKTS:
5318 hci_num_comp_pkts_evt(hdev, skb);
5319 break;
5320
5321 case HCI_EV_MODE_CHANGE:
5322 hci_mode_change_evt(hdev, skb);
5323 break;
5324
5325 case HCI_EV_PIN_CODE_REQ:
5326 hci_pin_code_request_evt(hdev, skb);
5327 break;
5328
5329 case HCI_EV_LINK_KEY_REQ:
5330 hci_link_key_request_evt(hdev, skb);
5331 break;
5332
5333 case HCI_EV_LINK_KEY_NOTIFY:
5334 hci_link_key_notify_evt(hdev, skb);
5335 break;
5336
5337 case HCI_EV_CLOCK_OFFSET:
5338 hci_clock_offset_evt(hdev, skb);
5339 break;
5340
5341 case HCI_EV_PKT_TYPE_CHANGE:
5342 hci_pkt_type_change_evt(hdev, skb);
5343 break;
5344
5345 case HCI_EV_PSCAN_REP_MODE:
5346 hci_pscan_rep_mode_evt(hdev, skb);
5347 break;
5348
5349 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
5350 hci_inquiry_result_with_rssi_evt(hdev, skb);
5351 break;
5352
5353 case HCI_EV_REMOTE_EXT_FEATURES:
5354 hci_remote_ext_features_evt(hdev, skb);
5355 break;
5356
5357 case HCI_EV_SYNC_CONN_COMPLETE:
5358 hci_sync_conn_complete_evt(hdev, skb);
5359 break;
5360
5361 case HCI_EV_EXTENDED_INQUIRY_RESULT:
5362 hci_extended_inquiry_result_evt(hdev, skb);
5363 break;
5364
5365 case HCI_EV_KEY_REFRESH_COMPLETE:
5366 hci_key_refresh_complete_evt(hdev, skb);
5367 break;
5368
5369 case HCI_EV_IO_CAPA_REQUEST:
5370 hci_io_capa_request_evt(hdev, skb);
5371 break;
5372
5373 case HCI_EV_IO_CAPA_REPLY:
5374 hci_io_capa_reply_evt(hdev, skb);
5375 break;
5376
5377 case HCI_EV_USER_CONFIRM_REQUEST:
5378 hci_user_confirm_request_evt(hdev, skb);
5379 break;
5380
5381 case HCI_EV_USER_PASSKEY_REQUEST:
5382 hci_user_passkey_request_evt(hdev, skb);
5383 break;
5384
5385 case HCI_EV_USER_PASSKEY_NOTIFY:
5386 hci_user_passkey_notify_evt(hdev, skb);
5387 break;
5388
5389 case HCI_EV_KEYPRESS_NOTIFY:
5390 hci_keypress_notify_evt(hdev, skb);
5391 break;
5392
5393 case HCI_EV_SIMPLE_PAIR_COMPLETE:
5394 hci_simple_pair_complete_evt(hdev, skb);
5395 break;
5396
5397 case HCI_EV_REMOTE_HOST_FEATURES:
5398 hci_remote_host_features_evt(hdev, skb);
5399 break;
5400
5401 case HCI_EV_LE_META:
5402 hci_le_meta_evt(hdev, skb);
5403 break;
5404
5405 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
5406 hci_remote_oob_data_request_evt(hdev, skb);
5407 break;
5408
5409 #if IS_ENABLED(CONFIG_BT_HS)
5410 case HCI_EV_CHANNEL_SELECTED:
5411 hci_chan_selected_evt(hdev, skb);
5412 break;
5413
5414 case HCI_EV_PHY_LINK_COMPLETE:
5415 hci_phy_link_complete_evt(hdev, skb);
5416 break;
5417
5418 case HCI_EV_LOGICAL_LINK_COMPLETE:
5419 hci_loglink_complete_evt(hdev, skb);
5420 break;
5421
5422 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
5423 hci_disconn_loglink_complete_evt(hdev, skb);
5424 break;
5425
5426 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
5427 hci_disconn_phylink_complete_evt(hdev, skb);
5428 break;
5429 #endif
5430
5431 case HCI_EV_NUM_COMP_BLOCKS:
5432 hci_num_comp_blocks_evt(hdev, skb);
5433 break;
5434
5435 default:
5436 BT_DBG("%s event 0x%2.2x", hdev->name, event);
5437 break;
5438 }
5439
5440 if (req_complete) {
5441 req_complete(hdev, status, opcode);
5442 } else if (req_complete_skb) {
5443 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
5444 kfree_skb(orig_skb);
5445 orig_skb = NULL;
5446 }
5447 req_complete_skb(hdev, status, opcode, orig_skb);
5448 }
5449
5450 kfree_skb(orig_skb);
5451 kfree_skb(skb);
5452 hdev->stat.evt_rx++;
5453 }
ubuntu-zesty-kernel mirror