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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / net / bluetooth / hci_event.c
blobcd3bbb766c24c1503972e07f8ccfe9b4827ce3f3
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /* Bluetooth HCI event handling. */
26
27 #include <asm/unaligned.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31 #include <net/bluetooth/mgmt.h>
32
33 #include "hci_request.h"
34 #include "hci_debugfs.h"
35 #include "a2mp.h"
36 #include "amp.h"
37 #include "smp.h"
38
39 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
40 "\x00\x00\x00\x00\x00\x00\x00\x00"
41
42 /* Handle HCI Event packets */
43
44 static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
45 {
46 __u8 status = *((__u8 *) skb->data);
47
48 BT_DBG("%s status 0x%2.2x", hdev->name, status);
49
50 if (status)
51 return;
52
53 clear_bit(HCI_INQUIRY, &hdev->flags);
54 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
55 wake_up_bit(&hdev->flags, HCI_INQUIRY);
56
57 hci_dev_lock(hdev);
58 /* Set discovery state to stopped if we're not doing LE active
59 * scanning.
60 */
61 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
62 hdev->le_scan_type != LE_SCAN_ACTIVE)
63 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
64 hci_dev_unlock(hdev);
65
66 hci_conn_check_pending(hdev);
67 }
68
69 static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
70 {
71 __u8 status = *((__u8 *) skb->data);
72
73 BT_DBG("%s status 0x%2.2x", hdev->name, status);
74
75 if (status)
76 return;
77
78 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
79 }
80
81 static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
82 {
83 __u8 status = *((__u8 *) skb->data);
84
85 BT_DBG("%s status 0x%2.2x", hdev->name, status);
86
87 if (status)
88 return;
89
90 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
91
92 hci_conn_check_pending(hdev);
93 }
94
95 static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
96 struct sk_buff *skb)
97 {
98 BT_DBG("%s", hdev->name);
99 }
100
101 static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
102 {
103 struct hci_rp_role_discovery *rp = (void *) skb->data;
104 struct hci_conn *conn;
105
106 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
107
108 if (rp->status)
109 return;
110
111 hci_dev_lock(hdev);
112
113 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
114 if (conn)
115 conn->role = rp->role;
116
117 hci_dev_unlock(hdev);
118 }
119
120 static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
121 {
122 struct hci_rp_read_link_policy *rp = (void *) skb->data;
123 struct hci_conn *conn;
124
125 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
126
127 if (rp->status)
128 return;
129
130 hci_dev_lock(hdev);
131
132 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
133 if (conn)
134 conn->link_policy = __le16_to_cpu(rp->policy);
135
136 hci_dev_unlock(hdev);
137 }
138
139 static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
140 {
141 struct hci_rp_write_link_policy *rp = (void *) skb->data;
142 struct hci_conn *conn;
143 void *sent;
144
145 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
146
147 if (rp->status)
148 return;
149
150 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
151 if (!sent)
152 return;
153
154 hci_dev_lock(hdev);
155
156 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
157 if (conn)
158 conn->link_policy = get_unaligned_le16(sent + 2);
159
160 hci_dev_unlock(hdev);
161 }
162
163 static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
164 struct sk_buff *skb)
165 {
166 struct hci_rp_read_def_link_policy *rp = (void *) skb->data;
167
168 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
169
170 if (rp->status)
171 return;
172
173 hdev->link_policy = __le16_to_cpu(rp->policy);
174 }
175
176 static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
177 struct sk_buff *skb)
178 {
179 __u8 status = *((__u8 *) skb->data);
180 void *sent;
181
182 BT_DBG("%s status 0x%2.2x", hdev->name, status);
183
184 if (status)
185 return;
186
187 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
188 if (!sent)
189 return;
190
191 hdev->link_policy = get_unaligned_le16(sent);
192 }
193
194 static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
195 {
196 __u8 status = *((__u8 *) skb->data);
197
198 BT_DBG("%s status 0x%2.2x", hdev->name, status);
199
200 clear_bit(HCI_RESET, &hdev->flags);
201
202 if (status)
203 return;
204
205 /* Reset all non-persistent flags */
206 hci_dev_clear_volatile_flags(hdev);
207
208 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
209
210 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
211 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
212
213 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
214 hdev->adv_data_len = 0;
215
216 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
217 hdev->scan_rsp_data_len = 0;
218
219 hdev->le_scan_type = LE_SCAN_PASSIVE;
220
221 hdev->ssp_debug_mode = 0;
222
223 hci_bdaddr_list_clear(&hdev->le_white_list);
224 }
225
226 static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
227 struct sk_buff *skb)
228 {
229 struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
230 struct hci_cp_read_stored_link_key *sent;
231
232 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
233
234 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
235 if (!sent)
236 return;
237
238 if (!rp->status && sent->read_all == 0x01) {
239 hdev->stored_max_keys = rp->max_keys;
240 hdev->stored_num_keys = rp->num_keys;
241 }
242 }
243
244 static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
245 struct sk_buff *skb)
246 {
247 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;
248
249 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
250
251 if (rp->status)
252 return;
253
254 if (rp->num_keys <= hdev->stored_num_keys)
255 hdev->stored_num_keys -= rp->num_keys;
256 else
257 hdev->stored_num_keys = 0;
258 }
259
260 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
261 {
262 __u8 status = *((__u8 *) skb->data);
263 void *sent;
264
265 BT_DBG("%s status 0x%2.2x", hdev->name, status);
266
267 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
268 if (!sent)
269 return;
270
271 hci_dev_lock(hdev);
272
273 if (hci_dev_test_flag(hdev, HCI_MGMT))
274 mgmt_set_local_name_complete(hdev, sent, status);
275 else if (!status)
276 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
277
278 hci_dev_unlock(hdev);
279 }
280
281 static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
282 {
283 struct hci_rp_read_local_name *rp = (void *) skb->data;
284
285 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
286
287 if (rp->status)
288 return;
289
290 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
291 hci_dev_test_flag(hdev, HCI_CONFIG))
292 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
293 }
294
295 static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
296 {
297 __u8 status = *((__u8 *) skb->data);
298 void *sent;
299
300 BT_DBG("%s status 0x%2.2x", hdev->name, status);
301
302 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
303 if (!sent)
304 return;
305
306 hci_dev_lock(hdev);
307
308 if (!status) {
309 __u8 param = *((__u8 *) sent);
310
311 if (param == AUTH_ENABLED)
312 set_bit(HCI_AUTH, &hdev->flags);
313 else
314 clear_bit(HCI_AUTH, &hdev->flags);
315 }
316
317 if (hci_dev_test_flag(hdev, HCI_MGMT))
318 mgmt_auth_enable_complete(hdev, status);
319
320 hci_dev_unlock(hdev);
321 }
322
323 static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
324 {
325 __u8 status = *((__u8 *) skb->data);
326 __u8 param;
327 void *sent;
328
329 BT_DBG("%s status 0x%2.2x", hdev->name, status);
330
331 if (status)
332 return;
333
334 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
335 if (!sent)
336 return;
337
338 param = *((__u8 *) sent);
339
340 if (param)
341 set_bit(HCI_ENCRYPT, &hdev->flags);
342 else
343 clear_bit(HCI_ENCRYPT, &hdev->flags);
344 }
345
346 static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
347 {
348 __u8 status = *((__u8 *) skb->data);
349 __u8 param;
350 void *sent;
351
352 BT_DBG("%s status 0x%2.2x", hdev->name, status);
353
354 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
355 if (!sent)
356 return;
357
358 param = *((__u8 *) sent);
359
360 hci_dev_lock(hdev);
361
362 if (status) {
363 hdev->discov_timeout = 0;
364 goto done;
365 }
366
367 if (param & SCAN_INQUIRY)
368 set_bit(HCI_ISCAN, &hdev->flags);
369 else
370 clear_bit(HCI_ISCAN, &hdev->flags);
371
372 if (param & SCAN_PAGE)
373 set_bit(HCI_PSCAN, &hdev->flags);
374 else
375 clear_bit(HCI_PSCAN, &hdev->flags);
376
377 done:
378 hci_dev_unlock(hdev);
379 }
380
381 static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
382 {
383 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
384
385 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
386
387 if (rp->status)
388 return;
389
390 memcpy(hdev->dev_class, rp->dev_class, 3);
391
392 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
393 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
394 }
395
396 static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
397 {
398 __u8 status = *((__u8 *) skb->data);
399 void *sent;
400
401 BT_DBG("%s status 0x%2.2x", hdev->name, status);
402
403 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
404 if (!sent)
405 return;
406
407 hci_dev_lock(hdev);
408
409 if (status == 0)
410 memcpy(hdev->dev_class, sent, 3);
411
412 if (hci_dev_test_flag(hdev, HCI_MGMT))
413 mgmt_set_class_of_dev_complete(hdev, sent, status);
414
415 hci_dev_unlock(hdev);
416 }
417
418 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
419 {
420 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
421 __u16 setting;
422
423 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
424
425 if (rp->status)
426 return;
427
428 setting = __le16_to_cpu(rp->voice_setting);
429
430 if (hdev->voice_setting == setting)
431 return;
432
433 hdev->voice_setting = setting;
434
435 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
436
437 if (hdev->notify)
438 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
439 }
440
441 static void hci_cc_write_voice_setting(struct hci_dev *hdev,
442 struct sk_buff *skb)
443 {
444 __u8 status = *((__u8 *) skb->data);
445 __u16 setting;
446 void *sent;
447
448 BT_DBG("%s status 0x%2.2x", hdev->name, status);
449
450 if (status)
451 return;
452
453 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
454 if (!sent)
455 return;
456
457 setting = get_unaligned_le16(sent);
458
459 if (hdev->voice_setting == setting)
460 return;
461
462 hdev->voice_setting = setting;
463
464 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
465
466 if (hdev->notify)
467 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
468 }
469
470 static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
471 struct sk_buff *skb)
472 {
473 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
474
475 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
476
477 if (rp->status)
478 return;
479
480 hdev->num_iac = rp->num_iac;
481
482 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
483 }
484
485 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
486 {
487 __u8 status = *((__u8 *) skb->data);
488 struct hci_cp_write_ssp_mode *sent;
489
490 BT_DBG("%s status 0x%2.2x", hdev->name, status);
491
492 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
493 if (!sent)
494 return;
495
496 hci_dev_lock(hdev);
497
498 if (!status) {
499 if (sent->mode)
500 hdev->features[1][0] |= LMP_HOST_SSP;
501 else
502 hdev->features[1][0] &= ~LMP_HOST_SSP;
503 }
504
505 if (hci_dev_test_flag(hdev, HCI_MGMT))
506 mgmt_ssp_enable_complete(hdev, sent->mode, status);
507 else if (!status) {
508 if (sent->mode)
509 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
510 else
511 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
512 }
513
514 hci_dev_unlock(hdev);
515 }
516
517 static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
518 {
519 u8 status = *((u8 *) skb->data);
520 struct hci_cp_write_sc_support *sent;
521
522 BT_DBG("%s status 0x%2.2x", hdev->name, status);
523
524 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
525 if (!sent)
526 return;
527
528 hci_dev_lock(hdev);
529
530 if (!status) {
531 if (sent->support)
532 hdev->features[1][0] |= LMP_HOST_SC;
533 else
534 hdev->features[1][0] &= ~LMP_HOST_SC;
535 }
536
537 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
538 if (sent->support)
539 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
540 else
541 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
542 }
543
544 hci_dev_unlock(hdev);
545 }
546
547 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
548 {
549 struct hci_rp_read_local_version *rp = (void *) skb->data;
550
551 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
552
553 if (rp->status)
554 return;
555
556 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
557 hci_dev_test_flag(hdev, HCI_CONFIG)) {
558 hdev->hci_ver = rp->hci_ver;
559 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
560 hdev->lmp_ver = rp->lmp_ver;
561 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
562 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
563 }
564 }
565
566 static void hci_cc_read_local_commands(struct hci_dev *hdev,
567 struct sk_buff *skb)
568 {
569 struct hci_rp_read_local_commands *rp = (void *) skb->data;
570
571 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
572
573 if (rp->status)
574 return;
575
576 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
577 hci_dev_test_flag(hdev, HCI_CONFIG))
578 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
579 }
580
581 static void hci_cc_read_local_features(struct hci_dev *hdev,
582 struct sk_buff *skb)
583 {
584 struct hci_rp_read_local_features *rp = (void *) skb->data;
585
586 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
587
588 if (rp->status)
589 return;
590
591 memcpy(hdev->features, rp->features, 8);
592
593 /* Adjust default settings according to features
594 * supported by device. */
595
596 if (hdev->features[0][0] & LMP_3SLOT)
597 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
598
599 if (hdev->features[0][0] & LMP_5SLOT)
600 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
601
602 if (hdev->features[0][1] & LMP_HV2) {
603 hdev->pkt_type |= (HCI_HV2);
604 hdev->esco_type |= (ESCO_HV2);
605 }
606
607 if (hdev->features[0][1] & LMP_HV3) {
608 hdev->pkt_type |= (HCI_HV3);
609 hdev->esco_type |= (ESCO_HV3);
610 }
611
612 if (lmp_esco_capable(hdev))
613 hdev->esco_type |= (ESCO_EV3);
614
615 if (hdev->features[0][4] & LMP_EV4)
616 hdev->esco_type |= (ESCO_EV4);
617
618 if (hdev->features[0][4] & LMP_EV5)
619 hdev->esco_type |= (ESCO_EV5);
620
621 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
622 hdev->esco_type |= (ESCO_2EV3);
623
624 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
625 hdev->esco_type |= (ESCO_3EV3);
626
627 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
628 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
629 }
630
631 static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
632 struct sk_buff *skb)
633 {
634 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
635
636 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
637
638 if (rp->status)
639 return;
640
641 if (hdev->max_page < rp->max_page)
642 hdev->max_page = rp->max_page;
643
644 if (rp->page < HCI_MAX_PAGES)
645 memcpy(hdev->features[rp->page], rp->features, 8);
646 }
647
648 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
649 struct sk_buff *skb)
650 {
651 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
652
653 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
654
655 if (rp->status)
656 return;
657
658 hdev->flow_ctl_mode = rp->mode;
659 }
660
661 static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
662 {
663 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
664
665 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
666
667 if (rp->status)
668 return;
669
670 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
671 hdev->sco_mtu = rp->sco_mtu;
672 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
673 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
674
675 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
676 hdev->sco_mtu = 64;
677 hdev->sco_pkts = 8;
678 }
679
680 hdev->acl_cnt = hdev->acl_pkts;
681 hdev->sco_cnt = hdev->sco_pkts;
682
683 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
684 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
685 }
686
687 static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
688 {
689 struct hci_rp_read_bd_addr *rp = (void *) skb->data;
690
691 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
692
693 if (rp->status)
694 return;
695
696 if (test_bit(HCI_INIT, &hdev->flags))
697 bacpy(&hdev->bdaddr, &rp->bdaddr);
698
699 if (hci_dev_test_flag(hdev, HCI_SETUP))
700 bacpy(&hdev->setup_addr, &rp->bdaddr);
701 }
702
703 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
704 struct sk_buff *skb)
705 {
706 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;
707
708 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
709
710 if (rp->status)
711 return;
712
713 if (test_bit(HCI_INIT, &hdev->flags)) {
714 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
715 hdev->page_scan_window = __le16_to_cpu(rp->window);
716 }
717 }
718
719 static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
720 struct sk_buff *skb)
721 {
722 u8 status = *((u8 *) skb->data);
723 struct hci_cp_write_page_scan_activity *sent;
724
725 BT_DBG("%s status 0x%2.2x", hdev->name, status);
726
727 if (status)
728 return;
729
730 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
731 if (!sent)
732 return;
733
734 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
735 hdev->page_scan_window = __le16_to_cpu(sent->window);
736 }
737
738 static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
739 struct sk_buff *skb)
740 {
741 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
742
743 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
744
745 if (rp->status)
746 return;
747
748 if (test_bit(HCI_INIT, &hdev->flags))
749 hdev->page_scan_type = rp->type;
750 }
751
752 static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
753 struct sk_buff *skb)
754 {
755 u8 status = *((u8 *) skb->data);
756 u8 *type;
757
758 BT_DBG("%s status 0x%2.2x", hdev->name, status);
759
760 if (status)
761 return;
762
763 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
764 if (type)
765 hdev->page_scan_type = *type;
766 }
767
768 static void hci_cc_read_data_block_size(struct hci_dev *hdev,
769 struct sk_buff *skb)
770 {
771 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
772
773 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
774
775 if (rp->status)
776 return;
777
778 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
779 hdev->block_len = __le16_to_cpu(rp->block_len);
780 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
781
782 hdev->block_cnt = hdev->num_blocks;
783
784 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
785 hdev->block_cnt, hdev->block_len);
786 }
787
788 static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
789 {
790 struct hci_rp_read_clock *rp = (void *) skb->data;
791 struct hci_cp_read_clock *cp;
792 struct hci_conn *conn;
793
794 BT_DBG("%s", hdev->name);
795
796 if (skb->len < sizeof(*rp))
797 return;
798
799 if (rp->status)
800 return;
801
802 hci_dev_lock(hdev);
803
804 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
805 if (!cp)
806 goto unlock;
807
808 if (cp->which == 0x00) {
809 hdev->clock = le32_to_cpu(rp->clock);
810 goto unlock;
811 }
812
813 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
814 if (conn) {
815 conn->clock = le32_to_cpu(rp->clock);
816 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
817 }
818
819 unlock:
820 hci_dev_unlock(hdev);
821 }
822
823 static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
824 struct sk_buff *skb)
825 {
826 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
827
828 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
829
830 if (rp->status)
831 return;
832
833 hdev->amp_status = rp->amp_status;
834 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
835 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
836 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
837 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
838 hdev->amp_type = rp->amp_type;
839 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
840 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
841 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
842 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
843 }
844
845 static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
846 struct sk_buff *skb)
847 {
848 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
849
850 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
851
852 if (rp->status)
853 return;
854
855 hdev->inq_tx_power = rp->tx_power;
856 }
857
858 static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
859 {
860 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
861 struct hci_cp_pin_code_reply *cp;
862 struct hci_conn *conn;
863
864 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
865
866 hci_dev_lock(hdev);
867
868 if (hci_dev_test_flag(hdev, HCI_MGMT))
869 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
870
871 if (rp->status)
872 goto unlock;
873
874 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
875 if (!cp)
876 goto unlock;
877
878 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
879 if (conn)
880 conn->pin_length = cp->pin_len;
881
882 unlock:
883 hci_dev_unlock(hdev);
884 }
885
886 static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
887 {
888 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
889
890 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
891
892 hci_dev_lock(hdev);
893
894 if (hci_dev_test_flag(hdev, HCI_MGMT))
895 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
896 rp->status);
897
898 hci_dev_unlock(hdev);
899 }
900
901 static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
902 struct sk_buff *skb)
903 {
904 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
905
906 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
907
908 if (rp->status)
909 return;
910
911 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
912 hdev->le_pkts = rp->le_max_pkt;
913
914 hdev->le_cnt = hdev->le_pkts;
915
916 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
917 }
918
919 static void hci_cc_le_read_local_features(struct hci_dev *hdev,
920 struct sk_buff *skb)
921 {
922 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
923
924 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
925
926 if (rp->status)
927 return;
928
929 memcpy(hdev->le_features, rp->features, 8);
930 }
931
932 static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
933 struct sk_buff *skb)
934 {
935 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
936
937 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
938
939 if (rp->status)
940 return;
941
942 hdev->adv_tx_power = rp->tx_power;
943 }
944
945 static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
946 {
947 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
948
949 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
950
951 hci_dev_lock(hdev);
952
953 if (hci_dev_test_flag(hdev, HCI_MGMT))
954 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
955 rp->status);
956
957 hci_dev_unlock(hdev);
958 }
959
960 static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
961 struct sk_buff *skb)
962 {
963 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
964
965 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
966
967 hci_dev_lock(hdev);
968
969 if (hci_dev_test_flag(hdev, HCI_MGMT))
970 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
971 ACL_LINK, 0, rp->status);
972
973 hci_dev_unlock(hdev);
974 }
975
976 static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
977 {
978 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
979
980 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
981
982 hci_dev_lock(hdev);
983
984 if (hci_dev_test_flag(hdev, HCI_MGMT))
985 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
986 0, rp->status);
987
988 hci_dev_unlock(hdev);
989 }
990
991 static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
992 struct sk_buff *skb)
993 {
994 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
995
996 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
997
998 hci_dev_lock(hdev);
999
1000 if (hci_dev_test_flag(hdev, HCI_MGMT))
1001 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1002 ACL_LINK, 0, rp->status);
1003
1004 hci_dev_unlock(hdev);
1005 }
1006
1007 static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
1008 struct sk_buff *skb)
1009 {
1010 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
1011
1012 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1013 }
1014
1015 static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
1016 struct sk_buff *skb)
1017 {
1018 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1019
1020 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1021 }
1022
1023 static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1024 {
1025 __u8 status = *((__u8 *) skb->data);
1026 bdaddr_t *sent;
1027
1028 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1029
1030 if (status)
1031 return;
1032
1033 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1034 if (!sent)
1035 return;
1036
1037 hci_dev_lock(hdev);
1038
1039 bacpy(&hdev->random_addr, sent);
1040
1041 hci_dev_unlock(hdev);
1042 }
1043
1044 static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1045 {
1046 __u8 *sent, status = *((__u8 *) skb->data);
1047
1048 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1049
1050 if (status)
1051 return;
1052
1053 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1054 if (!sent)
1055 return;
1056
1057 hci_dev_lock(hdev);
1058
1059 /* If we're doing connection initiation as peripheral. Set a
1060 * timeout in case something goes wrong.
1061 */
1062 if (*sent) {
1063 struct hci_conn *conn;
1064
1065 hci_dev_set_flag(hdev, HCI_LE_ADV);
1066
1067 conn = hci_lookup_le_connect(hdev);
1068 if (conn)
1069 queue_delayed_work(hdev->workqueue,
1070 &conn->le_conn_timeout,
1071 conn->conn_timeout);
1072 } else {
1073 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1074 }
1075
1076 hci_dev_unlock(hdev);
1077 }
1078
1079 static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1080 {
1081 struct hci_cp_le_set_scan_param *cp;
1082 __u8 status = *((__u8 *) skb->data);
1083
1084 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1085
1086 if (status)
1087 return;
1088
1089 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1090 if (!cp)
1091 return;
1092
1093 hci_dev_lock(hdev);
1094
1095 hdev->le_scan_type = cp->type;
1096
1097 hci_dev_unlock(hdev);
1098 }
1099
1100 static bool has_pending_adv_report(struct hci_dev *hdev)
1101 {
1102 struct discovery_state *d = &hdev->discovery;
1103
1104 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1105 }
1106
1107 static void clear_pending_adv_report(struct hci_dev *hdev)
1108 {
1109 struct discovery_state *d = &hdev->discovery;
1110
1111 bacpy(&d->last_adv_addr, BDADDR_ANY);
1112 d->last_adv_data_len = 0;
1113 }
1114
1115 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116 u8 bdaddr_type, s8 rssi, u32 flags,
1117 u8 *data, u8 len)
1118 {
1119 struct discovery_state *d = &hdev->discovery;
1120
1121 bacpy(&d->last_adv_addr, bdaddr);
1122 d->last_adv_addr_type = bdaddr_type;
1123 d->last_adv_rssi = rssi;
1124 d->last_adv_flags = flags;
1125 memcpy(d->last_adv_data, data, len);
1126 d->last_adv_data_len = len;
1127 }
1128
1129 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1130 struct sk_buff *skb)
1131 {
1132 struct hci_cp_le_set_scan_enable *cp;
1133 __u8 status = *((__u8 *) skb->data);
1134
1135 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1136
1137 if (status)
1138 return;
1139
1140 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1141 if (!cp)
1142 return;
1143
1144 hci_dev_lock(hdev);
1145
1146 switch (cp->enable) {
1147 case LE_SCAN_ENABLE:
1148 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1149 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1150 clear_pending_adv_report(hdev);
1151 break;
1152
1153 case LE_SCAN_DISABLE:
1154 /* We do this here instead of when setting DISCOVERY_STOPPED
1155 * since the latter would potentially require waiting for
1156 * inquiry to stop too.
1157 */
1158 if (has_pending_adv_report(hdev)) {
1159 struct discovery_state *d = &hdev->discovery;
1160
1161 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1162 d->last_adv_addr_type, NULL,
1163 d->last_adv_rssi, d->last_adv_flags,
1164 d->last_adv_data,
1165 d->last_adv_data_len, NULL, 0);
1166 }
1167
1168 /* Cancel this timer so that we don't try to disable scanning
1169 * when it's already disabled.
1170 */
1171 cancel_delayed_work(&hdev->le_scan_disable);
1172
1173 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1174
1175 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1176 * interrupted scanning due to a connect request. Mark
1177 * therefore discovery as stopped. If this was not
1178 * because of a connect request advertising might have
1179 * been disabled because of active scanning, so
1180 * re-enable it again if necessary.
1181 */
1182 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1183 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1184 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1185 hdev->discovery.state == DISCOVERY_FINDING)
1186 hci_req_reenable_advertising(hdev);
1187
1188 break;
1189
1190 default:
1191 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1192 cp->enable);
1193 break;
1194 }
1195
1196 hci_dev_unlock(hdev);
1197 }
1198
1199 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1200 struct sk_buff *skb)
1201 {
1202 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1203
1204 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1205
1206 if (rp->status)
1207 return;
1208
1209 hdev->le_white_list_size = rp->size;
1210 }
1211
1212 static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1213 struct sk_buff *skb)
1214 {
1215 __u8 status = *((__u8 *) skb->data);
1216
1217 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1218
1219 if (status)
1220 return;
1221
1222 hci_bdaddr_list_clear(&hdev->le_white_list);
1223 }
1224
1225 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1226 struct sk_buff *skb)
1227 {
1228 struct hci_cp_le_add_to_white_list *sent;
1229 __u8 status = *((__u8 *) skb->data);
1230
1231 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1232
1233 if (status)
1234 return;
1235
1236 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1237 if (!sent)
1238 return;
1239
1240 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1241 sent->bdaddr_type);
1242 }
1243
1244 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1245 struct sk_buff *skb)
1246 {
1247 struct hci_cp_le_del_from_white_list *sent;
1248 __u8 status = *((__u8 *) skb->data);
1249
1250 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1251
1252 if (status)
1253 return;
1254
1255 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1256 if (!sent)
1257 return;
1258
1259 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1260 sent->bdaddr_type);
1261 }
1262
1263 static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1264 struct sk_buff *skb)
1265 {
1266 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1267
1268 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1269
1270 if (rp->status)
1271 return;
1272
1273 memcpy(hdev->le_states, rp->le_states, 8);
1274 }
1275
1276 static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1277 struct sk_buff *skb)
1278 {
1279 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1280
1281 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1282
1283 if (rp->status)
1284 return;
1285
1286 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1287 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1288 }
1289
1290 static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1291 struct sk_buff *skb)
1292 {
1293 struct hci_cp_le_write_def_data_len *sent;
1294 __u8 status = *((__u8 *) skb->data);
1295
1296 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1297
1298 if (status)
1299 return;
1300
1301 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1302 if (!sent)
1303 return;
1304
1305 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1306 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1307 }
1308
1309 static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1310 struct sk_buff *skb)
1311 {
1312 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1313
1314 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1315
1316 if (rp->status)
1317 return;
1318
1319 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1320 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1321 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1322 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1323 }
1324
1325 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1326 struct sk_buff *skb)
1327 {
1328 struct hci_cp_write_le_host_supported *sent;
1329 __u8 status = *((__u8 *) skb->data);
1330
1331 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1332
1333 if (status)
1334 return;
1335
1336 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1337 if (!sent)
1338 return;
1339
1340 hci_dev_lock(hdev);
1341
1342 if (sent->le) {
1343 hdev->features[1][0] |= LMP_HOST_LE;
1344 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1345 } else {
1346 hdev->features[1][0] &= ~LMP_HOST_LE;
1347 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
1348 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1349 }
1350
1351 if (sent->simul)
1352 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1353 else
1354 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1355
1356 hci_dev_unlock(hdev);
1357 }
1358
1359 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1360 {
1361 struct hci_cp_le_set_adv_param *cp;
1362 u8 status = *((u8 *) skb->data);
1363
1364 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1365
1366 if (status)
1367 return;
1368
1369 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1370 if (!cp)
1371 return;
1372
1373 hci_dev_lock(hdev);
1374 hdev->adv_addr_type = cp->own_address_type;
1375 hci_dev_unlock(hdev);
1376 }
1377
1378 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1379 {
1380 struct hci_rp_read_rssi *rp = (void *) skb->data;
1381 struct hci_conn *conn;
1382
1383 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1384
1385 if (rp->status)
1386 return;
1387
1388 hci_dev_lock(hdev);
1389
1390 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1391 if (conn)
1392 conn->rssi = rp->rssi;
1393
1394 hci_dev_unlock(hdev);
1395 }
1396
1397 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1398 {
1399 struct hci_cp_read_tx_power *sent;
1400 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1401 struct hci_conn *conn;
1402
1403 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1404
1405 if (rp->status)
1406 return;
1407
1408 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1409 if (!sent)
1410 return;
1411
1412 hci_dev_lock(hdev);
1413
1414 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1415 if (!conn)
1416 goto unlock;
1417
1418 switch (sent->type) {
1419 case 0x00:
1420 conn->tx_power = rp->tx_power;
1421 break;
1422 case 0x01:
1423 conn->max_tx_power = rp->tx_power;
1424 break;
1425 }
1426
1427 unlock:
1428 hci_dev_unlock(hdev);
1429 }
1430
1431 static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
1432 {
1433 u8 status = *((u8 *) skb->data);
1434 u8 *mode;
1435
1436 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1437
1438 if (status)
1439 return;
1440
1441 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
1442 if (mode)
1443 hdev->ssp_debug_mode = *mode;
1444 }
1445
1446 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1447 {
1448 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1449
1450 if (status) {
1451 hci_conn_check_pending(hdev);
1452 return;
1453 }
1454
1455 set_bit(HCI_INQUIRY, &hdev->flags);
1456 }
1457
1458 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1459 {
1460 struct hci_cp_create_conn *cp;
1461 struct hci_conn *conn;
1462
1463 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1464
1465 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1466 if (!cp)
1467 return;
1468
1469 hci_dev_lock(hdev);
1470
1471 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1472
1473 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1474
1475 if (status) {
1476 if (conn && conn->state == BT_CONNECT) {
1477 if (status != 0x0c || conn->attempt > 2) {
1478 conn->state = BT_CLOSED;
1479 hci_connect_cfm(conn, status);
1480 hci_conn_del(conn);
1481 } else
1482 conn->state = BT_CONNECT2;
1483 }
1484 } else {
1485 if (!conn) {
1486 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1487 HCI_ROLE_MASTER);
1488 if (!conn)
1489 bt_dev_err(hdev, "no memory for new connection");
1490 }
1491 }
1492
1493 hci_dev_unlock(hdev);
1494 }
1495
1496 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1497 {
1498 struct hci_cp_add_sco *cp;
1499 struct hci_conn *acl, *sco;
1500 __u16 handle;
1501
1502 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1503
1504 if (!status)
1505 return;
1506
1507 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1508 if (!cp)
1509 return;
1510
1511 handle = __le16_to_cpu(cp->handle);
1512
1513 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1514
1515 hci_dev_lock(hdev);
1516
1517 acl = hci_conn_hash_lookup_handle(hdev, handle);
1518 if (acl) {
1519 sco = acl->link;
1520 if (sco) {
1521 sco->state = BT_CLOSED;
1522
1523 hci_connect_cfm(sco, status);
1524 hci_conn_del(sco);
1525 }
1526 }
1527
1528 hci_dev_unlock(hdev);
1529 }
1530
1531 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1532 {
1533 struct hci_cp_auth_requested *cp;
1534 struct hci_conn *conn;
1535
1536 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1537
1538 if (!status)
1539 return;
1540
1541 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1542 if (!cp)
1543 return;
1544
1545 hci_dev_lock(hdev);
1546
1547 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1548 if (conn) {
1549 if (conn->state == BT_CONFIG) {
1550 hci_connect_cfm(conn, status);
1551 hci_conn_drop(conn);
1552 }
1553 }
1554
1555 hci_dev_unlock(hdev);
1556 }
1557
1558 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1559 {
1560 struct hci_cp_set_conn_encrypt *cp;
1561 struct hci_conn *conn;
1562
1563 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1564
1565 if (!status)
1566 return;
1567
1568 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1569 if (!cp)
1570 return;
1571
1572 hci_dev_lock(hdev);
1573
1574 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1575 if (conn) {
1576 if (conn->state == BT_CONFIG) {
1577 hci_connect_cfm(conn, status);
1578 hci_conn_drop(conn);
1579 }
1580 }
1581
1582 hci_dev_unlock(hdev);
1583 }
1584
1585 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1586 struct hci_conn *conn)
1587 {
1588 if (conn->state != BT_CONFIG || !conn->out)
1589 return 0;
1590
1591 if (conn->pending_sec_level == BT_SECURITY_SDP)
1592 return 0;
1593
1594 /* Only request authentication for SSP connections or non-SSP
1595 * devices with sec_level MEDIUM or HIGH or if MITM protection
1596 * is requested.
1597 */
1598 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1599 conn->pending_sec_level != BT_SECURITY_FIPS &&
1600 conn->pending_sec_level != BT_SECURITY_HIGH &&
1601 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1602 return 0;
1603
1604 return 1;
1605 }
1606
1607 static int hci_resolve_name(struct hci_dev *hdev,
1608 struct inquiry_entry *e)
1609 {
1610 struct hci_cp_remote_name_req cp;
1611
1612 memset(&cp, 0, sizeof(cp));
1613
1614 bacpy(&cp.bdaddr, &e->data.bdaddr);
1615 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1616 cp.pscan_mode = e->data.pscan_mode;
1617 cp.clock_offset = e->data.clock_offset;
1618
1619 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1620 }
1621
1622 static bool hci_resolve_next_name(struct hci_dev *hdev)
1623 {
1624 struct discovery_state *discov = &hdev->discovery;
1625 struct inquiry_entry *e;
1626
1627 if (list_empty(&discov->resolve))
1628 return false;
1629
1630 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1631 if (!e)
1632 return false;
1633
1634 if (hci_resolve_name(hdev, e) == 0) {
1635 e->name_state = NAME_PENDING;
1636 return true;
1637 }
1638
1639 return false;
1640 }
1641
1642 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1643 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1644 {
1645 struct discovery_state *discov = &hdev->discovery;
1646 struct inquiry_entry *e;
1647
1648 /* Update the mgmt connected state if necessary. Be careful with
1649 * conn objects that exist but are not (yet) connected however.
1650 * Only those in BT_CONFIG or BT_CONNECTED states can be
1651 * considered connected.
1652 */
1653 if (conn &&
1654 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1655 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1656 mgmt_device_connected(hdev, conn, 0, name, name_len);
1657
1658 if (discov->state == DISCOVERY_STOPPED)
1659 return;
1660
1661 if (discov->state == DISCOVERY_STOPPING)
1662 goto discov_complete;
1663
1664 if (discov->state != DISCOVERY_RESOLVING)
1665 return;
1666
1667 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1668 /* If the device was not found in a list of found devices names of which
1669 * are pending. there is no need to continue resolving a next name as it
1670 * will be done upon receiving another Remote Name Request Complete
1671 * Event */
1672 if (!e)
1673 return;
1674
1675 list_del(&e->list);
1676 if (name) {
1677 e->name_state = NAME_KNOWN;
1678 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1679 e->data.rssi, name, name_len);
1680 } else {
1681 e->name_state = NAME_NOT_KNOWN;
1682 }
1683
1684 if (hci_resolve_next_name(hdev))
1685 return;
1686
1687 discov_complete:
1688 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1689 }
1690
1691 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
1692 {
1693 struct hci_cp_remote_name_req *cp;
1694 struct hci_conn *conn;
1695
1696 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1697
1698 /* If successful wait for the name req complete event before
1699 * checking for the need to do authentication */
1700 if (!status)
1701 return;
1702
1703 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
1704 if (!cp)
1705 return;
1706
1707 hci_dev_lock(hdev);
1708
1709 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1710
1711 if (hci_dev_test_flag(hdev, HCI_MGMT))
1712 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1713
1714 if (!conn)
1715 goto unlock;
1716
1717 if (!hci_outgoing_auth_needed(hdev, conn))
1718 goto unlock;
1719
1720 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1721 struct hci_cp_auth_requested auth_cp;
1722
1723 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
1724
1725 auth_cp.handle = __cpu_to_le16(conn->handle);
1726 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
1727 sizeof(auth_cp), &auth_cp);
1728 }
1729
1730 unlock:
1731 hci_dev_unlock(hdev);
1732 }
1733
1734 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
1735 {
1736 struct hci_cp_read_remote_features *cp;
1737 struct hci_conn *conn;
1738
1739 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1740
1741 if (!status)
1742 return;
1743
1744 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
1745 if (!cp)
1746 return;
1747
1748 hci_dev_lock(hdev);
1749
1750 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1751 if (conn) {
1752 if (conn->state == BT_CONFIG) {
1753 hci_connect_cfm(conn, status);
1754 hci_conn_drop(conn);
1755 }
1756 }
1757
1758 hci_dev_unlock(hdev);
1759 }
1760
1761 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
1762 {
1763 struct hci_cp_read_remote_ext_features *cp;
1764 struct hci_conn *conn;
1765
1766 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1767
1768 if (!status)
1769 return;
1770
1771 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
1772 if (!cp)
1773 return;
1774
1775 hci_dev_lock(hdev);
1776
1777 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1778 if (conn) {
1779 if (conn->state == BT_CONFIG) {
1780 hci_connect_cfm(conn, status);
1781 hci_conn_drop(conn);
1782 }
1783 }
1784
1785 hci_dev_unlock(hdev);
1786 }
1787
1788 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
1789 {
1790 struct hci_cp_setup_sync_conn *cp;
1791 struct hci_conn *acl, *sco;
1792 __u16 handle;
1793
1794 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1795
1796 if (!status)
1797 return;
1798
1799 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
1800 if (!cp)
1801 return;
1802
1803 handle = __le16_to_cpu(cp->handle);
1804
1805 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1806
1807 hci_dev_lock(hdev);
1808
1809 acl = hci_conn_hash_lookup_handle(hdev, handle);
1810 if (acl) {
1811 sco = acl->link;
1812 if (sco) {
1813 sco->state = BT_CLOSED;
1814
1815 hci_connect_cfm(sco, status);
1816 hci_conn_del(sco);
1817 }
1818 }
1819
1820 hci_dev_unlock(hdev);
1821 }
1822
1823 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
1824 {
1825 struct hci_cp_sniff_mode *cp;
1826 struct hci_conn *conn;
1827
1828 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1829
1830 if (!status)
1831 return;
1832
1833 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
1834 if (!cp)
1835 return;
1836
1837 hci_dev_lock(hdev);
1838
1839 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1840 if (conn) {
1841 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1842
1843 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1844 hci_sco_setup(conn, status);
1845 }
1846
1847 hci_dev_unlock(hdev);
1848 }
1849
1850 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
1851 {
1852 struct hci_cp_exit_sniff_mode *cp;
1853 struct hci_conn *conn;
1854
1855 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1856
1857 if (!status)
1858 return;
1859
1860 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
1861 if (!cp)
1862 return;
1863
1864 hci_dev_lock(hdev);
1865
1866 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1867 if (conn) {
1868 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1869
1870 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1871 hci_sco_setup(conn, status);
1872 }
1873
1874 hci_dev_unlock(hdev);
1875 }
1876
1877 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
1878 {
1879 struct hci_cp_disconnect *cp;
1880 struct hci_conn *conn;
1881
1882 if (!status)
1883 return;
1884
1885 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
1886 if (!cp)
1887 return;
1888
1889 hci_dev_lock(hdev);
1890
1891 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1892 if (conn)
1893 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1894 conn->dst_type, status);
1895
1896 hci_dev_unlock(hdev);
1897 }
1898
1899 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
1900 {
1901 struct hci_cp_le_create_conn *cp;
1902 struct hci_conn *conn;
1903
1904 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1905
1906 /* All connection failure handling is taken care of by the
1907 * hci_le_conn_failed function which is triggered by the HCI
1908 * request completion callbacks used for connecting.
1909 */
1910 if (status)
1911 return;
1912
1913 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
1914 if (!cp)
1915 return;
1916
1917 hci_dev_lock(hdev);
1918
1919 conn = hci_conn_hash_lookup_le(hdev, &cp->peer_addr,
1920 cp->peer_addr_type);
1921 if (!conn)
1922 goto unlock;
1923
1924 /* Store the initiator and responder address information which
1925 * is needed for SMP. These values will not change during the
1926 * lifetime of the connection.
1927 */
1928 conn->init_addr_type = cp->own_address_type;
1929 if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
1930 bacpy(&conn->init_addr, &hdev->random_addr);
1931 else
1932 bacpy(&conn->init_addr, &hdev->bdaddr);
1933
1934 conn->resp_addr_type = cp->peer_addr_type;
1935 bacpy(&conn->resp_addr, &cp->peer_addr);
1936
1937 /* We don't want the connection attempt to stick around
1938 * indefinitely since LE doesn't have a page timeout concept
1939 * like BR/EDR. Set a timer for any connection that doesn't use
1940 * the white list for connecting.
1941 */
1942 if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
1943 queue_delayed_work(conn->hdev->workqueue,
1944 &conn->le_conn_timeout,
1945 conn->conn_timeout);
1946
1947 unlock:
1948 hci_dev_unlock(hdev);
1949 }
1950
1951 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
1952 {
1953 struct hci_cp_le_read_remote_features *cp;
1954 struct hci_conn *conn;
1955
1956 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1957
1958 if (!status)
1959 return;
1960
1961 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
1962 if (!cp)
1963 return;
1964
1965 hci_dev_lock(hdev);
1966
1967 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1968 if (conn) {
1969 if (conn->state == BT_CONFIG) {
1970 hci_connect_cfm(conn, status);
1971 hci_conn_drop(conn);
1972 }
1973 }
1974
1975 hci_dev_unlock(hdev);
1976 }
1977
1978 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
1979 {
1980 struct hci_cp_le_start_enc *cp;
1981 struct hci_conn *conn;
1982
1983 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1984
1985 if (!status)
1986 return;
1987
1988 hci_dev_lock(hdev);
1989
1990 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
1991 if (!cp)
1992 goto unlock;
1993
1994 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1995 if (!conn)
1996 goto unlock;
1997
1998 if (conn->state != BT_CONNECTED)
1999 goto unlock;
2000
2001 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2002 hci_conn_drop(conn);
2003
2004 unlock:
2005 hci_dev_unlock(hdev);
2006 }
2007
2008 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2009 {
2010 struct hci_cp_switch_role *cp;
2011 struct hci_conn *conn;
2012
2013 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2014
2015 if (!status)
2016 return;
2017
2018 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2019 if (!cp)
2020 return;
2021
2022 hci_dev_lock(hdev);
2023
2024 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2025 if (conn)
2026 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2027
2028 hci_dev_unlock(hdev);
2029 }
2030
2031 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2032 {
2033 __u8 status = *((__u8 *) skb->data);
2034 struct discovery_state *discov = &hdev->discovery;
2035 struct inquiry_entry *e;
2036
2037 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2038
2039 hci_conn_check_pending(hdev);
2040
2041 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2042 return;
2043
2044 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2045 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2046
2047 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2048 return;
2049
2050 hci_dev_lock(hdev);
2051
2052 if (discov->state != DISCOVERY_FINDING)
2053 goto unlock;
2054
2055 if (list_empty(&discov->resolve)) {
2056 /* When BR/EDR inquiry is active and no LE scanning is in
2057 * progress, then change discovery state to indicate completion.
2058 *
2059 * When running LE scanning and BR/EDR inquiry simultaneously
2060 * and the LE scan already finished, then change the discovery
2061 * state to indicate completion.
2062 */
2063 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2064 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2065 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2066 goto unlock;
2067 }
2068
2069 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2070 if (e && hci_resolve_name(hdev, e) == 0) {
2071 e->name_state = NAME_PENDING;
2072 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2073 } else {
2074 /* When BR/EDR inquiry is active and no LE scanning is in
2075 * progress, then change discovery state to indicate completion.
2076 *
2077 * When running LE scanning and BR/EDR inquiry simultaneously
2078 * and the LE scan already finished, then change the discovery
2079 * state to indicate completion.
2080 */
2081 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2082 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2083 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2084 }
2085
2086 unlock:
2087 hci_dev_unlock(hdev);
2088 }
2089
2090 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2091 {
2092 struct inquiry_data data;
2093 struct inquiry_info *info = (void *) (skb->data + 1);
2094 int num_rsp = *((__u8 *) skb->data);
2095
2096 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2097
2098 if (!num_rsp)
2099 return;
2100
2101 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2102 return;
2103
2104 hci_dev_lock(hdev);
2105
2106 for (; num_rsp; num_rsp--, info++) {
2107 u32 flags;
2108
2109 bacpy(&data.bdaddr, &info->bdaddr);
2110 data.pscan_rep_mode = info->pscan_rep_mode;
2111 data.pscan_period_mode = info->pscan_period_mode;
2112 data.pscan_mode = info->pscan_mode;
2113 memcpy(data.dev_class, info->dev_class, 3);
2114 data.clock_offset = info->clock_offset;
2115 data.rssi = HCI_RSSI_INVALID;
2116 data.ssp_mode = 0x00;
2117
2118 flags = hci_inquiry_cache_update(hdev, &data, false);
2119
2120 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2121 info->dev_class, HCI_RSSI_INVALID,
2122 flags, NULL, 0, NULL, 0);
2123 }
2124
2125 hci_dev_unlock(hdev);
2126 }
2127
2128 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2129 {
2130 struct hci_ev_conn_complete *ev = (void *) skb->data;
2131 struct hci_conn *conn;
2132
2133 BT_DBG("%s", hdev->name);
2134
2135 hci_dev_lock(hdev);
2136
2137 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2138 if (!conn) {
2139 if (ev->link_type != SCO_LINK)
2140 goto unlock;
2141
2142 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2143 if (!conn)
2144 goto unlock;
2145
2146 conn->type = SCO_LINK;
2147 }
2148
2149 if (!ev->status) {
2150 conn->handle = __le16_to_cpu(ev->handle);
2151
2152 if (conn->type == ACL_LINK) {
2153 conn->state = BT_CONFIG;
2154 hci_conn_hold(conn);
2155
2156 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2157 !hci_find_link_key(hdev, &ev->bdaddr))
2158 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2159 else
2160 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2161 } else
2162 conn->state = BT_CONNECTED;
2163
2164 hci_debugfs_create_conn(conn);
2165 hci_conn_add_sysfs(conn);
2166
2167 if (test_bit(HCI_AUTH, &hdev->flags))
2168 set_bit(HCI_CONN_AUTH, &conn->flags);
2169
2170 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2171 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2172
2173 /* Get remote features */
2174 if (conn->type == ACL_LINK) {
2175 struct hci_cp_read_remote_features cp;
2176 cp.handle = ev->handle;
2177 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2178 sizeof(cp), &cp);
2179
2180 hci_req_update_scan(hdev);
2181 }
2182
2183 /* Set packet type for incoming connection */
2184 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2185 struct hci_cp_change_conn_ptype cp;
2186 cp.handle = ev->handle;
2187 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2188 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2189 &cp);
2190 }
2191 } else {
2192 conn->state = BT_CLOSED;
2193 if (conn->type == ACL_LINK)
2194 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2195 conn->dst_type, ev->status);
2196 }
2197
2198 if (conn->type == ACL_LINK)
2199 hci_sco_setup(conn, ev->status);
2200
2201 if (ev->status) {
2202 hci_connect_cfm(conn, ev->status);
2203 hci_conn_del(conn);
2204 } else if (ev->link_type != ACL_LINK)
2205 hci_connect_cfm(conn, ev->status);
2206
2207 unlock:
2208 hci_dev_unlock(hdev);
2209
2210 hci_conn_check_pending(hdev);
2211 }
2212
2213 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2214 {
2215 struct hci_cp_reject_conn_req cp;
2216
2217 bacpy(&cp.bdaddr, bdaddr);
2218 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2219 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2220 }
2221
2222 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2223 {
2224 struct hci_ev_conn_request *ev = (void *) skb->data;
2225 int mask = hdev->link_mode;
2226 struct inquiry_entry *ie;
2227 struct hci_conn *conn;
2228 __u8 flags = 0;
2229
2230 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2231 ev->link_type);
2232
2233 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2234 &flags);
2235
2236 if (!(mask & HCI_LM_ACCEPT)) {
2237 hci_reject_conn(hdev, &ev->bdaddr);
2238 return;
2239 }
2240
2241 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2242 BDADDR_BREDR)) {
2243 hci_reject_conn(hdev, &ev->bdaddr);
2244 return;
2245 }
2246
2247 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2248 * connection. These features are only touched through mgmt so
2249 * only do the checks if HCI_MGMT is set.
2250 */
2251 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
2252 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2253 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2254 BDADDR_BREDR)) {
2255 hci_reject_conn(hdev, &ev->bdaddr);
2256 return;
2257 }
2258
2259 /* Connection accepted */
2260
2261 hci_dev_lock(hdev);
2262
2263 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2264 if (ie)
2265 memcpy(ie->data.dev_class, ev->dev_class, 3);
2266
2267 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2268 &ev->bdaddr);
2269 if (!conn) {
2270 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2271 HCI_ROLE_SLAVE);
2272 if (!conn) {
2273 bt_dev_err(hdev, "no memory for new connection");
2274 hci_dev_unlock(hdev);
2275 return;
2276 }
2277 }
2278
2279 memcpy(conn->dev_class, ev->dev_class, 3);
2280
2281 hci_dev_unlock(hdev);
2282
2283 if (ev->link_type == ACL_LINK ||
2284 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2285 struct hci_cp_accept_conn_req cp;
2286 conn->state = BT_CONNECT;
2287
2288 bacpy(&cp.bdaddr, &ev->bdaddr);
2289
2290 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2291 cp.role = 0x00; /* Become master */
2292 else
2293 cp.role = 0x01; /* Remain slave */
2294
2295 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2296 } else if (!(flags & HCI_PROTO_DEFER)) {
2297 struct hci_cp_accept_sync_conn_req cp;
2298 conn->state = BT_CONNECT;
2299
2300 bacpy(&cp.bdaddr, &ev->bdaddr);
2301 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2302
2303 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2304 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2305 cp.max_latency = cpu_to_le16(0xffff);
2306 cp.content_format = cpu_to_le16(hdev->voice_setting);
2307 cp.retrans_effort = 0xff;
2308
2309 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2310 &cp);
2311 } else {
2312 conn->state = BT_CONNECT2;
2313 hci_connect_cfm(conn, 0);
2314 }
2315 }
2316
2317 static u8 hci_to_mgmt_reason(u8 err)
2318 {
2319 switch (err) {
2320 case HCI_ERROR_CONNECTION_TIMEOUT:
2321 return MGMT_DEV_DISCONN_TIMEOUT;
2322 case HCI_ERROR_REMOTE_USER_TERM:
2323 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2324 case HCI_ERROR_REMOTE_POWER_OFF:
2325 return MGMT_DEV_DISCONN_REMOTE;
2326 case HCI_ERROR_LOCAL_HOST_TERM:
2327 return MGMT_DEV_DISCONN_LOCAL_HOST;
2328 default:
2329 return MGMT_DEV_DISCONN_UNKNOWN;
2330 }
2331 }
2332
2333 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2334 {
2335 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2336 u8 reason;
2337 struct hci_conn_params *params;
2338 struct hci_conn *conn;
2339 bool mgmt_connected;
2340 u8 type;
2341
2342 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2343
2344 hci_dev_lock(hdev);
2345
2346 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2347 if (!conn)
2348 goto unlock;
2349
2350 if (ev->status) {
2351 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2352 conn->dst_type, ev->status);
2353 goto unlock;
2354 }
2355
2356 conn->state = BT_CLOSED;
2357
2358 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2359
2360 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
2361 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
2362 else
2363 reason = hci_to_mgmt_reason(ev->reason);
2364
2365 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2366 reason, mgmt_connected);
2367
2368 if (conn->type == ACL_LINK) {
2369 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2370 hci_remove_link_key(hdev, &conn->dst);
2371
2372 hci_req_update_scan(hdev);
2373 }
2374
2375 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2376 if (params) {
2377 switch (params->auto_connect) {
2378 case HCI_AUTO_CONN_LINK_LOSS:
2379 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2380 break;
2381 /* Fall through */
2382
2383 case HCI_AUTO_CONN_DIRECT:
2384 case HCI_AUTO_CONN_ALWAYS:
2385 list_del_init(&params->action);
2386 list_add(&params->action, &hdev->pend_le_conns);
2387 hci_update_background_scan(hdev);
2388 break;
2389
2390 default:
2391 break;
2392 }
2393 }
2394
2395 type = conn->type;
2396
2397 hci_disconn_cfm(conn, ev->reason);
2398 hci_conn_del(conn);
2399
2400 /* Re-enable advertising if necessary, since it might
2401 * have been disabled by the connection. From the
2402 * HCI_LE_Set_Advertise_Enable command description in
2403 * the core specification (v4.0):
2404 * "The Controller shall continue advertising until the Host
2405 * issues an LE_Set_Advertise_Enable command with
2406 * Advertising_Enable set to 0x00 (Advertising is disabled)
2407 * or until a connection is created or until the Advertising
2408 * is timed out due to Directed Advertising."
2409 */
2410 if (type == LE_LINK)
2411 hci_req_reenable_advertising(hdev);
2412
2413 unlock:
2414 hci_dev_unlock(hdev);
2415 }
2416
2417 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2418 {
2419 struct hci_ev_auth_complete *ev = (void *) skb->data;
2420 struct hci_conn *conn;
2421
2422 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2423
2424 hci_dev_lock(hdev);
2425
2426 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2427 if (!conn)
2428 goto unlock;
2429
2430 if (!ev->status) {
2431 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2432
2433 if (!hci_conn_ssp_enabled(conn) &&
2434 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2435 bt_dev_info(hdev, "re-auth of legacy device is not possible.");
2436 } else {
2437 set_bit(HCI_CONN_AUTH, &conn->flags);
2438 conn->sec_level = conn->pending_sec_level;
2439 }
2440 } else {
2441 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2442 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2443
2444 mgmt_auth_failed(conn, ev->status);
2445 }
2446
2447 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2448 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2449
2450 if (conn->state == BT_CONFIG) {
2451 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2452 struct hci_cp_set_conn_encrypt cp;
2453 cp.handle = ev->handle;
2454 cp.encrypt = 0x01;
2455 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2456 &cp);
2457 } else {
2458 conn->state = BT_CONNECTED;
2459 hci_connect_cfm(conn, ev->status);
2460 hci_conn_drop(conn);
2461 }
2462 } else {
2463 hci_auth_cfm(conn, ev->status);
2464
2465 hci_conn_hold(conn);
2466 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2467 hci_conn_drop(conn);
2468 }
2469
2470 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2471 if (!ev->status) {
2472 struct hci_cp_set_conn_encrypt cp;
2473 cp.handle = ev->handle;
2474 cp.encrypt = 0x01;
2475 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2476 &cp);
2477 } else {
2478 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2479 hci_encrypt_cfm(conn, ev->status, 0x00);
2480 }
2481 }
2482
2483 unlock:
2484 hci_dev_unlock(hdev);
2485 }
2486
2487 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2488 {
2489 struct hci_ev_remote_name *ev = (void *) skb->data;
2490 struct hci_conn *conn;
2491
2492 BT_DBG("%s", hdev->name);
2493
2494 hci_conn_check_pending(hdev);
2495
2496 hci_dev_lock(hdev);
2497
2498 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2499
2500 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2501 goto check_auth;
2502
2503 if (ev->status == 0)
2504 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2505 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2506 else
2507 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2508
2509 check_auth:
2510 if (!conn)
2511 goto unlock;
2512
2513 if (!hci_outgoing_auth_needed(hdev, conn))
2514 goto unlock;
2515
2516 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2517 struct hci_cp_auth_requested cp;
2518
2519 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2520
2521 cp.handle = __cpu_to_le16(conn->handle);
2522 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2523 }
2524
2525 unlock:
2526 hci_dev_unlock(hdev);
2527 }
2528
2529 static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
2530 u16 opcode, struct sk_buff *skb)
2531 {
2532 const struct hci_rp_read_enc_key_size *rp;
2533 struct hci_conn *conn;
2534 u16 handle;
2535
2536 BT_DBG("%s status 0x%02x", hdev->name, status);
2537
2538 if (!skb || skb->len < sizeof(*rp)) {
2539 bt_dev_err(hdev, "invalid read key size response");
2540 return;
2541 }
2542
2543 rp = (void *)skb->data;
2544 handle = le16_to_cpu(rp->handle);
2545
2546 hci_dev_lock(hdev);
2547
2548 conn = hci_conn_hash_lookup_handle(hdev, handle);
2549 if (!conn)
2550 goto unlock;
2551
2552 /* If we fail to read the encryption key size, assume maximum
2553 * (which is the same we do also when this HCI command isn't
2554 * supported.
2555 */
2556 if (rp->status) {
2557 bt_dev_err(hdev, "failed to read key size for handle %u",
2558 handle);
2559 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2560 } else {
2561 conn->enc_key_size = rp->key_size;
2562 }
2563
2564 if (conn->state == BT_CONFIG) {
2565 conn->state = BT_CONNECTED;
2566 hci_connect_cfm(conn, 0);
2567 hci_conn_drop(conn);
2568 } else {
2569 u8 encrypt;
2570
2571 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2572 encrypt = 0x00;
2573 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2574 encrypt = 0x02;
2575 else
2576 encrypt = 0x01;
2577
2578 hci_encrypt_cfm(conn, 0, encrypt);
2579 }
2580
2581 unlock:
2582 hci_dev_unlock(hdev);
2583 }
2584
2585 static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2586 {
2587 struct hci_ev_encrypt_change *ev = (void *) skb->data;
2588 struct hci_conn *conn;
2589
2590 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2591
2592 hci_dev_lock(hdev);
2593
2594 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2595 if (!conn)
2596 goto unlock;
2597
2598 if (!ev->status) {
2599 if (ev->encrypt) {
2600 /* Encryption implies authentication */
2601 set_bit(HCI_CONN_AUTH, &conn->flags);
2602 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2603 conn->sec_level = conn->pending_sec_level;
2604
2605 /* P-256 authentication key implies FIPS */
2606 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2607 set_bit(HCI_CONN_FIPS, &conn->flags);
2608
2609 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
2610 conn->type == LE_LINK)
2611 set_bit(HCI_CONN_AES_CCM, &conn->flags);
2612 } else {
2613 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2614 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
2615 }
2616 }
2617
2618 /* We should disregard the current RPA and generate a new one
2619 * whenever the encryption procedure fails.
2620 */
2621 if (ev->status && conn->type == LE_LINK)
2622 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
2623
2624 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2625
2626 if (ev->status && conn->state == BT_CONNECTED) {
2627 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2628 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2629
2630 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2631 hci_conn_drop(conn);
2632 goto unlock;
2633 }
2634
2635 /* In Secure Connections Only mode, do not allow any connections
2636 * that are not encrypted with AES-CCM using a P-256 authenticated
2637 * combination key.
2638 */
2639 if (hci_dev_test_flag(hdev, HCI_SC_ONLY) &&
2640 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
2641 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
2642 hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
2643 hci_conn_drop(conn);
2644 goto unlock;
2645 }
2646
2647 /* Try reading the encryption key size for encrypted ACL links */
2648 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
2649 struct hci_cp_read_enc_key_size cp;
2650 struct hci_request req;
2651
2652 /* Only send HCI_Read_Encryption_Key_Size if the
2653 * controller really supports it. If it doesn't, assume
2654 * the default size (16).
2655 */
2656 if (!(hdev->commands[20] & 0x10)) {
2657 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2658 goto notify;
2659 }
2660
2661 hci_req_init(&req, hdev);
2662
2663 cp.handle = cpu_to_le16(conn->handle);
2664 hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp);
2665
2666 if (hci_req_run_skb(&req, read_enc_key_size_complete)) {
2667 bt_dev_err(hdev, "sending read key size failed");
2668 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2669 goto notify;
2670 }
2671
2672 goto unlock;
2673 }
2674
2675 notify:
2676 if (conn->state == BT_CONFIG) {
2677 if (!ev->status)
2678 conn->state = BT_CONNECTED;
2679
2680 hci_connect_cfm(conn, ev->status);
2681 hci_conn_drop(conn);
2682 } else
2683 hci_encrypt_cfm(conn, ev->status, ev->encrypt);
2684
2685 unlock:
2686 hci_dev_unlock(hdev);
2687 }
2688
2689 static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
2690 struct sk_buff *skb)
2691 {
2692 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
2693 struct hci_conn *conn;
2694
2695 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2696
2697 hci_dev_lock(hdev);
2698
2699 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2700 if (conn) {
2701 if (!ev->status)
2702 set_bit(HCI_CONN_SECURE, &conn->flags);
2703
2704 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2705
2706 hci_key_change_cfm(conn, ev->status);
2707 }
2708
2709 hci_dev_unlock(hdev);
2710 }
2711
2712 static void hci_remote_features_evt(struct hci_dev *hdev,
2713 struct sk_buff *skb)
2714 {
2715 struct hci_ev_remote_features *ev = (void *) skb->data;
2716 struct hci_conn *conn;
2717
2718 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2719
2720 hci_dev_lock(hdev);
2721
2722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2723 if (!conn)
2724 goto unlock;
2725
2726 if (!ev->status)
2727 memcpy(conn->features[0], ev->features, 8);
2728
2729 if (conn->state != BT_CONFIG)
2730 goto unlock;
2731
2732 if (!ev->status && lmp_ext_feat_capable(hdev) &&
2733 lmp_ext_feat_capable(conn)) {
2734 struct hci_cp_read_remote_ext_features cp;
2735 cp.handle = ev->handle;
2736 cp.page = 0x01;
2737 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
2738 sizeof(cp), &cp);
2739 goto unlock;
2740 }
2741
2742 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
2743 struct hci_cp_remote_name_req cp;
2744 memset(&cp, 0, sizeof(cp));
2745 bacpy(&cp.bdaddr, &conn->dst);
2746 cp.pscan_rep_mode = 0x02;
2747 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2748 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2749 mgmt_device_connected(hdev, conn, 0, NULL, 0);
2750
2751 if (!hci_outgoing_auth_needed(hdev, conn)) {
2752 conn->state = BT_CONNECTED;
2753 hci_connect_cfm(conn, ev->status);
2754 hci_conn_drop(conn);
2755 }
2756
2757 unlock:
2758 hci_dev_unlock(hdev);
2759 }
2760
2761 static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
2762 u16 *opcode, u8 *status,
2763 hci_req_complete_t *req_complete,
2764 hci_req_complete_skb_t *req_complete_skb)
2765 {
2766 struct hci_ev_cmd_complete *ev = (void *) skb->data;
2767
2768 *opcode = __le16_to_cpu(ev->opcode);
2769 *status = skb->data[sizeof(*ev)];
2770
2771 skb_pull(skb, sizeof(*ev));
2772
2773 switch (*opcode) {
2774 case HCI_OP_INQUIRY_CANCEL:
2775 hci_cc_inquiry_cancel(hdev, skb);
2776 break;
2777
2778 case HCI_OP_PERIODIC_INQ:
2779 hci_cc_periodic_inq(hdev, skb);
2780 break;
2781
2782 case HCI_OP_EXIT_PERIODIC_INQ:
2783 hci_cc_exit_periodic_inq(hdev, skb);
2784 break;
2785
2786 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
2787 hci_cc_remote_name_req_cancel(hdev, skb);
2788 break;
2789
2790 case HCI_OP_ROLE_DISCOVERY:
2791 hci_cc_role_discovery(hdev, skb);
2792 break;
2793
2794 case HCI_OP_READ_LINK_POLICY:
2795 hci_cc_read_link_policy(hdev, skb);
2796 break;
2797
2798 case HCI_OP_WRITE_LINK_POLICY:
2799 hci_cc_write_link_policy(hdev, skb);
2800 break;
2801
2802 case HCI_OP_READ_DEF_LINK_POLICY:
2803 hci_cc_read_def_link_policy(hdev, skb);
2804 break;
2805
2806 case HCI_OP_WRITE_DEF_LINK_POLICY:
2807 hci_cc_write_def_link_policy(hdev, skb);
2808 break;
2809
2810 case HCI_OP_RESET:
2811 hci_cc_reset(hdev, skb);
2812 break;
2813
2814 case HCI_OP_READ_STORED_LINK_KEY:
2815 hci_cc_read_stored_link_key(hdev, skb);
2816 break;
2817
2818 case HCI_OP_DELETE_STORED_LINK_KEY:
2819 hci_cc_delete_stored_link_key(hdev, skb);
2820 break;
2821
2822 case HCI_OP_WRITE_LOCAL_NAME:
2823 hci_cc_write_local_name(hdev, skb);
2824 break;
2825
2826 case HCI_OP_READ_LOCAL_NAME:
2827 hci_cc_read_local_name(hdev, skb);
2828 break;
2829
2830 case HCI_OP_WRITE_AUTH_ENABLE:
2831 hci_cc_write_auth_enable(hdev, skb);
2832 break;
2833
2834 case HCI_OP_WRITE_ENCRYPT_MODE:
2835 hci_cc_write_encrypt_mode(hdev, skb);
2836 break;
2837
2838 case HCI_OP_WRITE_SCAN_ENABLE:
2839 hci_cc_write_scan_enable(hdev, skb);
2840 break;
2841
2842 case HCI_OP_READ_CLASS_OF_DEV:
2843 hci_cc_read_class_of_dev(hdev, skb);
2844 break;
2845
2846 case HCI_OP_WRITE_CLASS_OF_DEV:
2847 hci_cc_write_class_of_dev(hdev, skb);
2848 break;
2849
2850 case HCI_OP_READ_VOICE_SETTING:
2851 hci_cc_read_voice_setting(hdev, skb);
2852 break;
2853
2854 case HCI_OP_WRITE_VOICE_SETTING:
2855 hci_cc_write_voice_setting(hdev, skb);
2856 break;
2857
2858 case HCI_OP_READ_NUM_SUPPORTED_IAC:
2859 hci_cc_read_num_supported_iac(hdev, skb);
2860 break;
2861
2862 case HCI_OP_WRITE_SSP_MODE:
2863 hci_cc_write_ssp_mode(hdev, skb);
2864 break;
2865
2866 case HCI_OP_WRITE_SC_SUPPORT:
2867 hci_cc_write_sc_support(hdev, skb);
2868 break;
2869
2870 case HCI_OP_READ_LOCAL_VERSION:
2871 hci_cc_read_local_version(hdev, skb);
2872 break;
2873
2874 case HCI_OP_READ_LOCAL_COMMANDS:
2875 hci_cc_read_local_commands(hdev, skb);
2876 break;
2877
2878 case HCI_OP_READ_LOCAL_FEATURES:
2879 hci_cc_read_local_features(hdev, skb);
2880 break;
2881
2882 case HCI_OP_READ_LOCAL_EXT_FEATURES:
2883 hci_cc_read_local_ext_features(hdev, skb);
2884 break;
2885
2886 case HCI_OP_READ_BUFFER_SIZE:
2887 hci_cc_read_buffer_size(hdev, skb);
2888 break;
2889
2890 case HCI_OP_READ_BD_ADDR:
2891 hci_cc_read_bd_addr(hdev, skb);
2892 break;
2893
2894 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
2895 hci_cc_read_page_scan_activity(hdev, skb);
2896 break;
2897
2898 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
2899 hci_cc_write_page_scan_activity(hdev, skb);
2900 break;
2901
2902 case HCI_OP_READ_PAGE_SCAN_TYPE:
2903 hci_cc_read_page_scan_type(hdev, skb);
2904 break;
2905
2906 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
2907 hci_cc_write_page_scan_type(hdev, skb);
2908 break;
2909
2910 case HCI_OP_READ_DATA_BLOCK_SIZE:
2911 hci_cc_read_data_block_size(hdev, skb);
2912 break;
2913
2914 case HCI_OP_READ_FLOW_CONTROL_MODE:
2915 hci_cc_read_flow_control_mode(hdev, skb);
2916 break;
2917
2918 case HCI_OP_READ_LOCAL_AMP_INFO:
2919 hci_cc_read_local_amp_info(hdev, skb);
2920 break;
2921
2922 case HCI_OP_READ_CLOCK:
2923 hci_cc_read_clock(hdev, skb);
2924 break;
2925
2926 case HCI_OP_READ_INQ_RSP_TX_POWER:
2927 hci_cc_read_inq_rsp_tx_power(hdev, skb);
2928 break;
2929
2930 case HCI_OP_PIN_CODE_REPLY:
2931 hci_cc_pin_code_reply(hdev, skb);
2932 break;
2933
2934 case HCI_OP_PIN_CODE_NEG_REPLY:
2935 hci_cc_pin_code_neg_reply(hdev, skb);
2936 break;
2937
2938 case HCI_OP_READ_LOCAL_OOB_DATA:
2939 hci_cc_read_local_oob_data(hdev, skb);
2940 break;
2941
2942 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
2943 hci_cc_read_local_oob_ext_data(hdev, skb);
2944 break;
2945
2946 case HCI_OP_LE_READ_BUFFER_SIZE:
2947 hci_cc_le_read_buffer_size(hdev, skb);
2948 break;
2949
2950 case HCI_OP_LE_READ_LOCAL_FEATURES:
2951 hci_cc_le_read_local_features(hdev, skb);
2952 break;
2953
2954 case HCI_OP_LE_READ_ADV_TX_POWER:
2955 hci_cc_le_read_adv_tx_power(hdev, skb);
2956 break;
2957
2958 case HCI_OP_USER_CONFIRM_REPLY:
2959 hci_cc_user_confirm_reply(hdev, skb);
2960 break;
2961
2962 case HCI_OP_USER_CONFIRM_NEG_REPLY:
2963 hci_cc_user_confirm_neg_reply(hdev, skb);
2964 break;
2965
2966 case HCI_OP_USER_PASSKEY_REPLY:
2967 hci_cc_user_passkey_reply(hdev, skb);
2968 break;
2969
2970 case HCI_OP_USER_PASSKEY_NEG_REPLY:
2971 hci_cc_user_passkey_neg_reply(hdev, skb);
2972 break;
2973
2974 case HCI_OP_LE_SET_RANDOM_ADDR:
2975 hci_cc_le_set_random_addr(hdev, skb);
2976 break;
2977
2978 case HCI_OP_LE_SET_ADV_ENABLE:
2979 hci_cc_le_set_adv_enable(hdev, skb);
2980 break;
2981
2982 case HCI_OP_LE_SET_SCAN_PARAM:
2983 hci_cc_le_set_scan_param(hdev, skb);
2984 break;
2985
2986 case HCI_OP_LE_SET_SCAN_ENABLE:
2987 hci_cc_le_set_scan_enable(hdev, skb);
2988 break;
2989
2990 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
2991 hci_cc_le_read_white_list_size(hdev, skb);
2992 break;
2993
2994 case HCI_OP_LE_CLEAR_WHITE_LIST:
2995 hci_cc_le_clear_white_list(hdev, skb);
2996 break;
2997
2998 case HCI_OP_LE_ADD_TO_WHITE_LIST:
2999 hci_cc_le_add_to_white_list(hdev, skb);
3000 break;
3001
3002 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
3003 hci_cc_le_del_from_white_list(hdev, skb);
3004 break;
3005
3006 case HCI_OP_LE_READ_SUPPORTED_STATES:
3007 hci_cc_le_read_supported_states(hdev, skb);
3008 break;
3009
3010 case HCI_OP_LE_READ_DEF_DATA_LEN:
3011 hci_cc_le_read_def_data_len(hdev, skb);
3012 break;
3013
3014 case HCI_OP_LE_WRITE_DEF_DATA_LEN:
3015 hci_cc_le_write_def_data_len(hdev, skb);
3016 break;
3017
3018 case HCI_OP_LE_READ_MAX_DATA_LEN:
3019 hci_cc_le_read_max_data_len(hdev, skb);
3020 break;
3021
3022 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
3023 hci_cc_write_le_host_supported(hdev, skb);
3024 break;
3025
3026 case HCI_OP_LE_SET_ADV_PARAM:
3027 hci_cc_set_adv_param(hdev, skb);
3028 break;
3029
3030 case HCI_OP_READ_RSSI:
3031 hci_cc_read_rssi(hdev, skb);
3032 break;
3033
3034 case HCI_OP_READ_TX_POWER:
3035 hci_cc_read_tx_power(hdev, skb);
3036 break;
3037
3038 case HCI_OP_WRITE_SSP_DEBUG_MODE:
3039 hci_cc_write_ssp_debug_mode(hdev, skb);
3040 break;
3041
3042 default:
3043 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3044 break;
3045 }
3046
3047 if (*opcode != HCI_OP_NOP)
3048 cancel_delayed_work(&hdev->cmd_timer);
3049
3050 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3051 atomic_set(&hdev->cmd_cnt, 1);
3052
3053 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
3054 req_complete_skb);
3055
3056 if (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_dev_err(hdev, "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_dev_err(hdev, "unknown type %d conn %p",
3253 conn->type, conn);
3254 break;
3255 }
3256 }
3257
3258 queue_work(hdev->workqueue, &hdev->tx_work);
3259 }
3260
3261 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3262 __u16 handle)
3263 {
3264 struct hci_chan *chan;
3265
3266 switch (hdev->dev_type) {
3267 case HCI_PRIMARY:
3268 return hci_conn_hash_lookup_handle(hdev, handle);
3269 case HCI_AMP:
3270 chan = hci_chan_lookup_handle(hdev, handle);
3271 if (chan)
3272 return chan->conn;
3273 break;
3274 default:
3275 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
3276 break;
3277 }
3278
3279 return NULL;
3280 }
3281
3282 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3283 {
3284 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3285 int i;
3286
3287 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3288 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3289 return;
3290 }
3291
3292 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3293 ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3294 BT_DBG("%s bad parameters", hdev->name);
3295 return;
3296 }
3297
3298 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3299 ev->num_hndl);
3300
3301 for (i = 0; i < ev->num_hndl; i++) {
3302 struct hci_comp_blocks_info *info = &ev->handles[i];
3303 struct hci_conn *conn = NULL;
3304 __u16 handle, block_count;
3305
3306 handle = __le16_to_cpu(info->handle);
3307 block_count = __le16_to_cpu(info->blocks);
3308
3309 conn = __hci_conn_lookup_handle(hdev, handle);
3310 if (!conn)
3311 continue;
3312
3313 conn->sent -= block_count;
3314
3315 switch (conn->type) {
3316 case ACL_LINK:
3317 case AMP_LINK:
3318 hdev->block_cnt += block_count;
3319 if (hdev->block_cnt > hdev->num_blocks)
3320 hdev->block_cnt = hdev->num_blocks;
3321 break;
3322
3323 default:
3324 bt_dev_err(hdev, "unknown type %d conn %p",
3325 conn->type, conn);
3326 break;
3327 }
3328 }
3329
3330 queue_work(hdev->workqueue, &hdev->tx_work);
3331 }
3332
3333 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3334 {
3335 struct hci_ev_mode_change *ev = (void *) skb->data;
3336 struct hci_conn *conn;
3337
3338 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3339
3340 hci_dev_lock(hdev);
3341
3342 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3343 if (conn) {
3344 conn->mode = ev->mode;
3345
3346 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3347 &conn->flags)) {
3348 if (conn->mode == HCI_CM_ACTIVE)
3349 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3350 else
3351 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3352 }
3353
3354 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3355 hci_sco_setup(conn, ev->status);
3356 }
3357
3358 hci_dev_unlock(hdev);
3359 }
3360
3361 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3362 {
3363 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3364 struct hci_conn *conn;
3365
3366 BT_DBG("%s", hdev->name);
3367
3368 hci_dev_lock(hdev);
3369
3370 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3371 if (!conn)
3372 goto unlock;
3373
3374 if (conn->state == BT_CONNECTED) {
3375 hci_conn_hold(conn);
3376 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3377 hci_conn_drop(conn);
3378 }
3379
3380 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3381 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3382 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3383 sizeof(ev->bdaddr), &ev->bdaddr);
3384 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3385 u8 secure;
3386
3387 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3388 secure = 1;
3389 else
3390 secure = 0;
3391
3392 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3393 }
3394
3395 unlock:
3396 hci_dev_unlock(hdev);
3397 }
3398
3399 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3400 {
3401 if (key_type == HCI_LK_CHANGED_COMBINATION)
3402 return;
3403
3404 conn->pin_length = pin_len;
3405 conn->key_type = key_type;
3406
3407 switch (key_type) {
3408 case HCI_LK_LOCAL_UNIT:
3409 case HCI_LK_REMOTE_UNIT:
3410 case HCI_LK_DEBUG_COMBINATION:
3411 return;
3412 case HCI_LK_COMBINATION:
3413 if (pin_len == 16)
3414 conn->pending_sec_level = BT_SECURITY_HIGH;
3415 else
3416 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3417 break;
3418 case HCI_LK_UNAUTH_COMBINATION_P192:
3419 case HCI_LK_UNAUTH_COMBINATION_P256:
3420 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3421 break;
3422 case HCI_LK_AUTH_COMBINATION_P192:
3423 conn->pending_sec_level = BT_SECURITY_HIGH;
3424 break;
3425 case HCI_LK_AUTH_COMBINATION_P256:
3426 conn->pending_sec_level = BT_SECURITY_FIPS;
3427 break;
3428 }
3429 }
3430
3431 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3432 {
3433 struct hci_ev_link_key_req *ev = (void *) skb->data;
3434 struct hci_cp_link_key_reply cp;
3435 struct hci_conn *conn;
3436 struct link_key *key;
3437
3438 BT_DBG("%s", hdev->name);
3439
3440 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3441 return;
3442
3443 hci_dev_lock(hdev);
3444
3445 key = hci_find_link_key(hdev, &ev->bdaddr);
3446 if (!key) {
3447 BT_DBG("%s link key not found for %pMR", hdev->name,
3448 &ev->bdaddr);
3449 goto not_found;
3450 }
3451
3452 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3453 &ev->bdaddr);
3454
3455 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3456 if (conn) {
3457 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3458
3459 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3460 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3461 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3462 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3463 goto not_found;
3464 }
3465
3466 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3467 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3468 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3469 BT_DBG("%s ignoring key unauthenticated for high security",
3470 hdev->name);
3471 goto not_found;
3472 }
3473
3474 conn_set_key(conn, key->type, key->pin_len);
3475 }
3476
3477 bacpy(&cp.bdaddr, &ev->bdaddr);
3478 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3479
3480 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3481
3482 hci_dev_unlock(hdev);
3483
3484 return;
3485
3486 not_found:
3487 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3488 hci_dev_unlock(hdev);
3489 }
3490
3491 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3492 {
3493 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3494 struct hci_conn *conn;
3495 struct link_key *key;
3496 bool persistent;
3497 u8 pin_len = 0;
3498
3499 BT_DBG("%s", hdev->name);
3500
3501 hci_dev_lock(hdev);
3502
3503 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3504 if (!conn)
3505 goto unlock;
3506
3507 hci_conn_hold(conn);
3508 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3509 hci_conn_drop(conn);
3510
3511 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3512 conn_set_key(conn, ev->key_type, conn->pin_length);
3513
3514 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3515 goto unlock;
3516
3517 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3518 ev->key_type, pin_len, &persistent);
3519 if (!key)
3520 goto unlock;
3521
3522 /* Update connection information since adding the key will have
3523 * fixed up the type in the case of changed combination keys.
3524 */
3525 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
3526 conn_set_key(conn, key->type, key->pin_len);
3527
3528 mgmt_new_link_key(hdev, key, persistent);
3529
3530 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3531 * is set. If it's not set simply remove the key from the kernel
3532 * list (we've still notified user space about it but with
3533 * store_hint being 0).
3534 */
3535 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3536 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
3537 list_del_rcu(&key->list);
3538 kfree_rcu(key, rcu);
3539 goto unlock;
3540 }
3541
3542 if (persistent)
3543 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3544 else
3545 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3546
3547 unlock:
3548 hci_dev_unlock(hdev);
3549 }
3550
3551 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3552 {
3553 struct hci_ev_clock_offset *ev = (void *) skb->data;
3554 struct hci_conn *conn;
3555
3556 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3557
3558 hci_dev_lock(hdev);
3559
3560 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3561 if (conn && !ev->status) {
3562 struct inquiry_entry *ie;
3563
3564 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3565 if (ie) {
3566 ie->data.clock_offset = ev->clock_offset;
3567 ie->timestamp = jiffies;
3568 }
3569 }
3570
3571 hci_dev_unlock(hdev);
3572 }
3573
3574 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3575 {
3576 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
3577 struct hci_conn *conn;
3578
3579 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3580
3581 hci_dev_lock(hdev);
3582
3583 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3584 if (conn && !ev->status)
3585 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
3586
3587 hci_dev_unlock(hdev);
3588 }
3589
3590 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3591 {
3592 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3593 struct inquiry_entry *ie;
3594
3595 BT_DBG("%s", hdev->name);
3596
3597 hci_dev_lock(hdev);
3598
3599 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3600 if (ie) {
3601 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
3602 ie->timestamp = jiffies;
3603 }
3604
3605 hci_dev_unlock(hdev);
3606 }
3607
3608 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
3609 struct sk_buff *skb)
3610 {
3611 struct inquiry_data data;
3612 int num_rsp = *((__u8 *) skb->data);
3613
3614 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3615
3616 if (!num_rsp)
3617 return;
3618
3619 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3620 return;
3621
3622 hci_dev_lock(hdev);
3623
3624 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3625 struct inquiry_info_with_rssi_and_pscan_mode *info;
3626 info = (void *) (skb->data + 1);
3627
3628 for (; num_rsp; num_rsp--, info++) {
3629 u32 flags;
3630
3631 bacpy(&data.bdaddr, &info->bdaddr);
3632 data.pscan_rep_mode = info->pscan_rep_mode;
3633 data.pscan_period_mode = info->pscan_period_mode;
3634 data.pscan_mode = info->pscan_mode;
3635 memcpy(data.dev_class, info->dev_class, 3);
3636 data.clock_offset = info->clock_offset;
3637 data.rssi = info->rssi;
3638 data.ssp_mode = 0x00;
3639
3640 flags = hci_inquiry_cache_update(hdev, &data, false);
3641
3642 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3643 info->dev_class, info->rssi,
3644 flags, NULL, 0, NULL, 0);
3645 }
3646 } else {
3647 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
3648
3649 for (; num_rsp; num_rsp--, info++) {
3650 u32 flags;
3651
3652 bacpy(&data.bdaddr, &info->bdaddr);
3653 data.pscan_rep_mode = info->pscan_rep_mode;
3654 data.pscan_period_mode = info->pscan_period_mode;
3655 data.pscan_mode = 0x00;
3656 memcpy(data.dev_class, info->dev_class, 3);
3657 data.clock_offset = info->clock_offset;
3658 data.rssi = info->rssi;
3659 data.ssp_mode = 0x00;
3660
3661 flags = hci_inquiry_cache_update(hdev, &data, false);
3662
3663 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3664 info->dev_class, info->rssi,
3665 flags, NULL, 0, NULL, 0);
3666 }
3667 }
3668
3669 hci_dev_unlock(hdev);
3670 }
3671
3672 static void hci_remote_ext_features_evt(struct hci_dev *hdev,
3673 struct sk_buff *skb)
3674 {
3675 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
3676 struct hci_conn *conn;
3677
3678 BT_DBG("%s", hdev->name);
3679
3680 hci_dev_lock(hdev);
3681
3682 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3683 if (!conn)
3684 goto unlock;
3685
3686 if (ev->page < HCI_MAX_PAGES)
3687 memcpy(conn->features[ev->page], ev->features, 8);
3688
3689 if (!ev->status && ev->page == 0x01) {
3690 struct inquiry_entry *ie;
3691
3692 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3693 if (ie)
3694 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3695
3696 if (ev->features[0] & LMP_HOST_SSP) {
3697 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3698 } else {
3699 /* It is mandatory by the Bluetooth specification that
3700 * Extended Inquiry Results are only used when Secure
3701 * Simple Pairing is enabled, but some devices violate
3702 * this.
3703 *
3704 * To make these devices work, the internal SSP
3705 * enabled flag needs to be cleared if the remote host
3706 * features do not indicate SSP support */
3707 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3708 }
3709
3710 if (ev->features[0] & LMP_HOST_SC)
3711 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3712 }
3713
3714 if (conn->state != BT_CONFIG)
3715 goto unlock;
3716
3717 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3718 struct hci_cp_remote_name_req cp;
3719 memset(&cp, 0, sizeof(cp));
3720 bacpy(&cp.bdaddr, &conn->dst);
3721 cp.pscan_rep_mode = 0x02;
3722 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3723 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3724 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3725
3726 if (!hci_outgoing_auth_needed(hdev, conn)) {
3727 conn->state = BT_CONNECTED;
3728 hci_connect_cfm(conn, ev->status);
3729 hci_conn_drop(conn);
3730 }
3731
3732 unlock:
3733 hci_dev_unlock(hdev);
3734 }
3735
3736 static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
3737 struct sk_buff *skb)
3738 {
3739 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
3740 struct hci_conn *conn;
3741
3742 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3743
3744 hci_dev_lock(hdev);
3745
3746 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3747 if (!conn) {
3748 if (ev->link_type == ESCO_LINK)
3749 goto unlock;
3750
3751 /* When the link type in the event indicates SCO connection
3752 * and lookup of the connection object fails, then check
3753 * if an eSCO connection object exists.
3754 *
3755 * The core limits the synchronous connections to either
3756 * SCO or eSCO. The eSCO connection is preferred and tried
3757 * to be setup first and until successfully established,
3758 * the link type will be hinted as eSCO.
3759 */
3760 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
3761 if (!conn)
3762 goto unlock;
3763 }
3764
3765 switch (ev->status) {
3766 case 0x00:
3767 conn->handle = __le16_to_cpu(ev->handle);
3768 conn->state = BT_CONNECTED;
3769 conn->type = ev->link_type;
3770
3771 hci_debugfs_create_conn(conn);
3772 hci_conn_add_sysfs(conn);
3773 break;
3774
3775 case 0x10: /* Connection Accept Timeout */
3776 case 0x0d: /* Connection Rejected due to Limited Resources */
3777 case 0x11: /* Unsupported Feature or Parameter Value */
3778 case 0x1c: /* SCO interval rejected */
3779 case 0x1a: /* Unsupported Remote Feature */
3780 case 0x1f: /* Unspecified error */
3781 case 0x20: /* Unsupported LMP Parameter value */
3782 if (conn->out) {
3783 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
3784 (hdev->esco_type & EDR_ESCO_MASK);
3785 if (hci_setup_sync(conn, conn->link->handle))
3786 goto unlock;
3787 }
3788 /* fall through */
3789
3790 default:
3791 conn->state = BT_CLOSED;
3792 break;
3793 }
3794
3795 hci_connect_cfm(conn, ev->status);
3796 if (ev->status)
3797 hci_conn_del(conn);
3798
3799 unlock:
3800 hci_dev_unlock(hdev);
3801 }
3802
3803 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
3804 {
3805 size_t parsed = 0;
3806
3807 while (parsed < eir_len) {
3808 u8 field_len = eir[0];
3809
3810 if (field_len == 0)
3811 return parsed;
3812
3813 parsed += field_len + 1;
3814 eir += field_len + 1;
3815 }
3816
3817 return eir_len;
3818 }
3819
3820 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
3821 struct sk_buff *skb)
3822 {
3823 struct inquiry_data data;
3824 struct extended_inquiry_info *info = (void *) (skb->data + 1);
3825 int num_rsp = *((__u8 *) skb->data);
3826 size_t eir_len;
3827
3828 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3829
3830 if (!num_rsp)
3831 return;
3832
3833 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3834 return;
3835
3836 hci_dev_lock(hdev);
3837
3838 for (; num_rsp; num_rsp--, info++) {
3839 u32 flags;
3840 bool name_known;
3841
3842 bacpy(&data.bdaddr, &info->bdaddr);
3843 data.pscan_rep_mode = info->pscan_rep_mode;
3844 data.pscan_period_mode = info->pscan_period_mode;
3845 data.pscan_mode = 0x00;
3846 memcpy(data.dev_class, info->dev_class, 3);
3847 data.clock_offset = info->clock_offset;
3848 data.rssi = info->rssi;
3849 data.ssp_mode = 0x01;
3850
3851 if (hci_dev_test_flag(hdev, HCI_MGMT))
3852 name_known = eir_get_data(info->data,
3853 sizeof(info->data),
3854 EIR_NAME_COMPLETE, NULL);
3855 else
3856 name_known = true;
3857
3858 flags = hci_inquiry_cache_update(hdev, &data, name_known);
3859
3860 eir_len = eir_get_length(info->data, sizeof(info->data));
3861
3862 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3863 info->dev_class, info->rssi,
3864 flags, info->data, eir_len, NULL, 0);
3865 }
3866
3867 hci_dev_unlock(hdev);
3868 }
3869
3870 static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
3871 struct sk_buff *skb)
3872 {
3873 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
3874 struct hci_conn *conn;
3875
3876 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3877 __le16_to_cpu(ev->handle));
3878
3879 hci_dev_lock(hdev);
3880
3881 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3882 if (!conn)
3883 goto unlock;
3884
3885 /* For BR/EDR the necessary steps are taken through the
3886 * auth_complete event.
3887 */
3888 if (conn->type != LE_LINK)
3889 goto unlock;
3890
3891 if (!ev->status)
3892 conn->sec_level = conn->pending_sec_level;
3893
3894 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3895
3896 if (ev->status && conn->state == BT_CONNECTED) {
3897 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3898 hci_conn_drop(conn);
3899 goto unlock;
3900 }
3901
3902 if (conn->state == BT_CONFIG) {
3903 if (!ev->status)
3904 conn->state = BT_CONNECTED;
3905
3906 hci_connect_cfm(conn, ev->status);
3907 hci_conn_drop(conn);
3908 } else {
3909 hci_auth_cfm(conn, ev->status);
3910
3911 hci_conn_hold(conn);
3912 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3913 hci_conn_drop(conn);
3914 }
3915
3916 unlock:
3917 hci_dev_unlock(hdev);
3918 }
3919
3920 static u8 hci_get_auth_req(struct hci_conn *conn)
3921 {
3922 /* If remote requests no-bonding follow that lead */
3923 if (conn->remote_auth == HCI_AT_NO_BONDING ||
3924 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
3925 return conn->remote_auth | (conn->auth_type & 0x01);
3926
3927 /* If both remote and local have enough IO capabilities, require
3928 * MITM protection
3929 */
3930 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
3931 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
3932 return conn->remote_auth | 0x01;
3933
3934 /* No MITM protection possible so ignore remote requirement */
3935 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
3936 }
3937
3938 static u8 bredr_oob_data_present(struct hci_conn *conn)
3939 {
3940 struct hci_dev *hdev = conn->hdev;
3941 struct oob_data *data;
3942
3943 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
3944 if (!data)
3945 return 0x00;
3946
3947 if (bredr_sc_enabled(hdev)) {
3948 /* When Secure Connections is enabled, then just
3949 * return the present value stored with the OOB
3950 * data. The stored value contains the right present
3951 * information. However it can only be trusted when
3952 * not in Secure Connection Only mode.
3953 */
3954 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
3955 return data->present;
3956
3957 /* When Secure Connections Only mode is enabled, then
3958 * the P-256 values are required. If they are not
3959 * available, then do not declare that OOB data is
3960 * present.
3961 */
3962 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
3963 !memcmp(data->hash256, ZERO_KEY, 16))
3964 return 0x00;
3965
3966 return 0x02;
3967 }
3968
3969 /* When Secure Connections is not enabled or actually
3970 * not supported by the hardware, then check that if
3971 * P-192 data values are present.
3972 */
3973 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
3974 !memcmp(data->hash192, ZERO_KEY, 16))
3975 return 0x00;
3976
3977 return 0x01;
3978 }
3979
3980 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3981 {
3982 struct hci_ev_io_capa_request *ev = (void *) skb->data;
3983 struct hci_conn *conn;
3984
3985 BT_DBG("%s", hdev->name);
3986
3987 hci_dev_lock(hdev);
3988
3989 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3990 if (!conn)
3991 goto unlock;
3992
3993 hci_conn_hold(conn);
3994
3995 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3996 goto unlock;
3997
3998 /* Allow pairing if we're pairable, the initiators of the
3999 * pairing or if the remote is not requesting bonding.
4000 */
4001 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
4002 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
4003 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
4004 struct hci_cp_io_capability_reply cp;
4005
4006 bacpy(&cp.bdaddr, &ev->bdaddr);
4007 /* Change the IO capability from KeyboardDisplay
4008 * to DisplayYesNo as it is not supported by BT spec. */
4009 cp.capability = (conn->io_capability == 0x04) ?
4010 HCI_IO_DISPLAY_YESNO : conn->io_capability;
4011
4012 /* If we are initiators, there is no remote information yet */
4013 if (conn->remote_auth == 0xff) {
4014 /* Request MITM protection if our IO caps allow it
4015 * except for the no-bonding case.
4016 */
4017 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4018 conn->auth_type != HCI_AT_NO_BONDING)
4019 conn->auth_type |= 0x01;
4020 } else {
4021 conn->auth_type = hci_get_auth_req(conn);
4022 }
4023
4024 /* If we're not bondable, force one of the non-bondable
4025 * authentication requirement values.
4026 */
4027 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4028 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
4029
4030 cp.authentication = conn->auth_type;
4031 cp.oob_data = bredr_oob_data_present(conn);
4032
4033 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4034 sizeof(cp), &cp);
4035 } else {
4036 struct hci_cp_io_capability_neg_reply cp;
4037
4038 bacpy(&cp.bdaddr, &ev->bdaddr);
4039 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4040
4041 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4042 sizeof(cp), &cp);
4043 }
4044
4045 unlock:
4046 hci_dev_unlock(hdev);
4047 }
4048
4049 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4050 {
4051 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
4052 struct hci_conn *conn;
4053
4054 BT_DBG("%s", hdev->name);
4055
4056 hci_dev_lock(hdev);
4057
4058 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4059 if (!conn)
4060 goto unlock;
4061
4062 conn->remote_cap = ev->capability;
4063 conn->remote_auth = ev->authentication;
4064
4065 unlock:
4066 hci_dev_unlock(hdev);
4067 }
4068
4069 static void hci_user_confirm_request_evt(struct hci_dev *hdev,
4070 struct sk_buff *skb)
4071 {
4072 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4073 int loc_mitm, rem_mitm, confirm_hint = 0;
4074 struct hci_conn *conn;
4075
4076 BT_DBG("%s", hdev->name);
4077
4078 hci_dev_lock(hdev);
4079
4080 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4081 goto unlock;
4082
4083 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4084 if (!conn)
4085 goto unlock;
4086
4087 loc_mitm = (conn->auth_type & 0x01);
4088 rem_mitm = (conn->remote_auth & 0x01);
4089
4090 /* If we require MITM but the remote device can't provide that
4091 * (it has NoInputNoOutput) then reject the confirmation
4092 * request. We check the security level here since it doesn't
4093 * necessarily match conn->auth_type.
4094 */
4095 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
4096 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4097 BT_DBG("Rejecting request: remote device can't provide MITM");
4098 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4099 sizeof(ev->bdaddr), &ev->bdaddr);
4100 goto unlock;
4101 }
4102
4103 /* If no side requires MITM protection; auto-accept */
4104 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
4105 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4106
4107 /* If we're not the initiators request authorization to
4108 * proceed from user space (mgmt_user_confirm with
4109 * confirm_hint set to 1). The exception is if neither
4110 * side had MITM or if the local IO capability is
4111 * NoInputNoOutput, in which case we do auto-accept
4112 */
4113 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4114 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4115 (loc_mitm || rem_mitm)) {
4116 BT_DBG("Confirming auto-accept as acceptor");
4117 confirm_hint = 1;
4118 goto confirm;
4119 }
4120
4121 BT_DBG("Auto-accept of user confirmation with %ums delay",
4122 hdev->auto_accept_delay);
4123
4124 if (hdev->auto_accept_delay > 0) {
4125 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4126 queue_delayed_work(conn->hdev->workqueue,
4127 &conn->auto_accept_work, delay);
4128 goto unlock;
4129 }
4130
4131 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4132 sizeof(ev->bdaddr), &ev->bdaddr);
4133 goto unlock;
4134 }
4135
4136 confirm:
4137 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4138 le32_to_cpu(ev->passkey), confirm_hint);
4139
4140 unlock:
4141 hci_dev_unlock(hdev);
4142 }
4143
4144 static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4145 struct sk_buff *skb)
4146 {
4147 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4148
4149 BT_DBG("%s", hdev->name);
4150
4151 if (hci_dev_test_flag(hdev, HCI_MGMT))
4152 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4153 }
4154
4155 static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4156 struct sk_buff *skb)
4157 {
4158 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4159 struct hci_conn *conn;
4160
4161 BT_DBG("%s", hdev->name);
4162
4163 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4164 if (!conn)
4165 return;
4166
4167 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4168 conn->passkey_entered = 0;
4169
4170 if (hci_dev_test_flag(hdev, HCI_MGMT))
4171 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4172 conn->dst_type, conn->passkey_notify,
4173 conn->passkey_entered);
4174 }
4175
4176 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4177 {
4178 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4179 struct hci_conn *conn;
4180
4181 BT_DBG("%s", hdev->name);
4182
4183 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4184 if (!conn)
4185 return;
4186
4187 switch (ev->type) {
4188 case HCI_KEYPRESS_STARTED:
4189 conn->passkey_entered = 0;
4190 return;
4191
4192 case HCI_KEYPRESS_ENTERED:
4193 conn->passkey_entered++;
4194 break;
4195
4196 case HCI_KEYPRESS_ERASED:
4197 conn->passkey_entered--;
4198 break;
4199
4200 case HCI_KEYPRESS_CLEARED:
4201 conn->passkey_entered = 0;
4202 break;
4203
4204 case HCI_KEYPRESS_COMPLETED:
4205 return;
4206 }
4207
4208 if (hci_dev_test_flag(hdev, HCI_MGMT))
4209 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4210 conn->dst_type, conn->passkey_notify,
4211 conn->passkey_entered);
4212 }
4213
4214 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4215 struct sk_buff *skb)
4216 {
4217 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4218 struct hci_conn *conn;
4219
4220 BT_DBG("%s", hdev->name);
4221
4222 hci_dev_lock(hdev);
4223
4224 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4225 if (!conn)
4226 goto unlock;
4227
4228 /* Reset the authentication requirement to unknown */
4229 conn->remote_auth = 0xff;
4230
4231 /* To avoid duplicate auth_failed events to user space we check
4232 * the HCI_CONN_AUTH_PEND flag which will be set if we
4233 * initiated the authentication. A traditional auth_complete
4234 * event gets always produced as initiator and is also mapped to
4235 * the mgmt_auth_failed event */
4236 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4237 mgmt_auth_failed(conn, ev->status);
4238
4239 hci_conn_drop(conn);
4240
4241 unlock:
4242 hci_dev_unlock(hdev);
4243 }
4244
4245 static void hci_remote_host_features_evt(struct hci_dev *hdev,
4246 struct sk_buff *skb)
4247 {
4248 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4249 struct inquiry_entry *ie;
4250 struct hci_conn *conn;
4251
4252 BT_DBG("%s", hdev->name);
4253
4254 hci_dev_lock(hdev);
4255
4256 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4257 if (conn)
4258 memcpy(conn->features[1], ev->features, 8);
4259
4260 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4261 if (ie)
4262 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4263
4264 hci_dev_unlock(hdev);
4265 }
4266
4267 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4268 struct sk_buff *skb)
4269 {
4270 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4271 struct oob_data *data;
4272
4273 BT_DBG("%s", hdev->name);
4274
4275 hci_dev_lock(hdev);
4276
4277 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4278 goto unlock;
4279
4280 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4281 if (!data) {
4282 struct hci_cp_remote_oob_data_neg_reply cp;
4283
4284 bacpy(&cp.bdaddr, &ev->bdaddr);
4285 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4286 sizeof(cp), &cp);
4287 goto unlock;
4288 }
4289
4290 if (bredr_sc_enabled(hdev)) {
4291 struct hci_cp_remote_oob_ext_data_reply cp;
4292
4293 bacpy(&cp.bdaddr, &ev->bdaddr);
4294 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4295 memset(cp.hash192, 0, sizeof(cp.hash192));
4296 memset(cp.rand192, 0, sizeof(cp.rand192));
4297 } else {
4298 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4299 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4300 }
4301 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4302 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4303
4304 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4305 sizeof(cp), &cp);
4306 } else {
4307 struct hci_cp_remote_oob_data_reply cp;
4308
4309 bacpy(&cp.bdaddr, &ev->bdaddr);
4310 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4311 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4312
4313 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4314 sizeof(cp), &cp);
4315 }
4316
4317 unlock:
4318 hci_dev_unlock(hdev);
4319 }
4320
4321 #if IS_ENABLED(CONFIG_BT_HS)
4322 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4323 {
4324 struct hci_ev_channel_selected *ev = (void *)skb->data;
4325 struct hci_conn *hcon;
4326
4327 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4328
4329 skb_pull(skb, sizeof(*ev));
4330
4331 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4332 if (!hcon)
4333 return;
4334
4335 amp_read_loc_assoc_final_data(hdev, hcon);
4336 }
4337
4338 static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4339 struct sk_buff *skb)
4340 {
4341 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4342 struct hci_conn *hcon, *bredr_hcon;
4343
4344 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4345 ev->status);
4346
4347 hci_dev_lock(hdev);
4348
4349 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4350 if (!hcon) {
4351 hci_dev_unlock(hdev);
4352 return;
4353 }
4354
4355 if (ev->status) {
4356 hci_conn_del(hcon);
4357 hci_dev_unlock(hdev);
4358 return;
4359 }
4360
4361 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4362
4363 hcon->state = BT_CONNECTED;
4364 bacpy(&hcon->dst, &bredr_hcon->dst);
4365
4366 hci_conn_hold(hcon);
4367 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4368 hci_conn_drop(hcon);
4369
4370 hci_debugfs_create_conn(hcon);
4371 hci_conn_add_sysfs(hcon);
4372
4373 amp_physical_cfm(bredr_hcon, hcon);
4374
4375 hci_dev_unlock(hdev);
4376 }
4377
4378 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4379 {
4380 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4381 struct hci_conn *hcon;
4382 struct hci_chan *hchan;
4383 struct amp_mgr *mgr;
4384
4385 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4386 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4387 ev->status);
4388
4389 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4390 if (!hcon)
4391 return;
4392
4393 /* Create AMP hchan */
4394 hchan = hci_chan_create(hcon);
4395 if (!hchan)
4396 return;
4397
4398 hchan->handle = le16_to_cpu(ev->handle);
4399
4400 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4401
4402 mgr = hcon->amp_mgr;
4403 if (mgr && mgr->bredr_chan) {
4404 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4405
4406 l2cap_chan_lock(bredr_chan);
4407
4408 bredr_chan->conn->mtu = hdev->block_mtu;
4409 l2cap_logical_cfm(bredr_chan, hchan, 0);
4410 hci_conn_hold(hcon);
4411
4412 l2cap_chan_unlock(bredr_chan);
4413 }
4414 }
4415
4416 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4417 struct sk_buff *skb)
4418 {
4419 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4420 struct hci_chan *hchan;
4421
4422 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4423 le16_to_cpu(ev->handle), ev->status);
4424
4425 if (ev->status)
4426 return;
4427
4428 hci_dev_lock(hdev);
4429
4430 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4431 if (!hchan)
4432 goto unlock;
4433
4434 amp_destroy_logical_link(hchan, ev->reason);
4435
4436 unlock:
4437 hci_dev_unlock(hdev);
4438 }
4439
4440 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4441 struct sk_buff *skb)
4442 {
4443 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4444 struct hci_conn *hcon;
4445
4446 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4447
4448 if (ev->status)
4449 return;
4450
4451 hci_dev_lock(hdev);
4452
4453 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4454 if (hcon) {
4455 hcon->state = BT_CLOSED;
4456 hci_conn_del(hcon);
4457 }
4458
4459 hci_dev_unlock(hdev);
4460 }
4461 #endif
4462
4463 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4464 {
4465 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4466 struct hci_conn_params *params;
4467 struct hci_conn *conn;
4468 struct smp_irk *irk;
4469 u8 addr_type;
4470
4471 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4472
4473 hci_dev_lock(hdev);
4474
4475 /* All controllers implicitly stop advertising in the event of a
4476 * connection, so ensure that the state bit is cleared.
4477 */
4478 hci_dev_clear_flag(hdev, HCI_LE_ADV);
4479
4480 conn = hci_lookup_le_connect(hdev);
4481 if (!conn) {
4482 conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4483 if (!conn) {
4484 bt_dev_err(hdev, "no memory for new connection");
4485 goto unlock;
4486 }
4487
4488 conn->dst_type = ev->bdaddr_type;
4489
4490 /* If we didn't have a hci_conn object previously
4491 * but we're in master role this must be something
4492 * initiated using a white list. Since white list based
4493 * connections are not "first class citizens" we don't
4494 * have full tracking of them. Therefore, we go ahead
4495 * with a "best effort" approach of determining the
4496 * initiator address based on the HCI_PRIVACY flag.
4497 */
4498 if (conn->out) {
4499 conn->resp_addr_type = ev->bdaddr_type;
4500 bacpy(&conn->resp_addr, &ev->bdaddr);
4501 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
4502 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4503 bacpy(&conn->init_addr, &hdev->rpa);
4504 } else {
4505 hci_copy_identity_address(hdev,
4506 &conn->init_addr,
4507 &conn->init_addr_type);
4508 }
4509 }
4510 } else {
4511 cancel_delayed_work(&conn->le_conn_timeout);
4512 }
4513
4514 if (!conn->out) {
4515 /* Set the responder (our side) address type based on
4516 * the advertising address type.
4517 */
4518 conn->resp_addr_type = hdev->adv_addr_type;
4519 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
4520 bacpy(&conn->resp_addr, &hdev->random_addr);
4521 else
4522 bacpy(&conn->resp_addr, &hdev->bdaddr);
4523
4524 conn->init_addr_type = ev->bdaddr_type;
4525 bacpy(&conn->init_addr, &ev->bdaddr);
4526
4527 /* For incoming connections, set the default minimum
4528 * and maximum connection interval. They will be used
4529 * to check if the parameters are in range and if not
4530 * trigger the connection update procedure.
4531 */
4532 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4533 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4534 }
4535
4536 /* Lookup the identity address from the stored connection
4537 * address and address type.
4538 *
4539 * When establishing connections to an identity address, the
4540 * connection procedure will store the resolvable random
4541 * address first. Now if it can be converted back into the
4542 * identity address, start using the identity address from
4543 * now on.
4544 */
4545 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4546 if (irk) {
4547 bacpy(&conn->dst, &irk->bdaddr);
4548 conn->dst_type = irk->addr_type;
4549 }
4550
4551 if (ev->status) {
4552 hci_le_conn_failed(conn, ev->status);
4553 goto unlock;
4554 }
4555
4556 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
4557 addr_type = BDADDR_LE_PUBLIC;
4558 else
4559 addr_type = BDADDR_LE_RANDOM;
4560
4561 /* Drop the connection if the device is blocked */
4562 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
4563 hci_conn_drop(conn);
4564 goto unlock;
4565 }
4566
4567 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4568 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4569
4570 conn->sec_level = BT_SECURITY_LOW;
4571 conn->handle = __le16_to_cpu(ev->handle);
4572 conn->state = BT_CONFIG;
4573
4574 conn->le_conn_interval = le16_to_cpu(ev->interval);
4575 conn->le_conn_latency = le16_to_cpu(ev->latency);
4576 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4577
4578 hci_debugfs_create_conn(conn);
4579 hci_conn_add_sysfs(conn);
4580
4581 if (!ev->status) {
4582 /* The remote features procedure is defined for master
4583 * role only. So only in case of an initiated connection
4584 * request the remote features.
4585 *
4586 * If the local controller supports slave-initiated features
4587 * exchange, then requesting the remote features in slave
4588 * role is possible. Otherwise just transition into the
4589 * connected state without requesting the remote features.
4590 */
4591 if (conn->out ||
4592 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
4593 struct hci_cp_le_read_remote_features cp;
4594
4595 cp.handle = __cpu_to_le16(conn->handle);
4596
4597 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
4598 sizeof(cp), &cp);
4599
4600 hci_conn_hold(conn);
4601 } else {
4602 conn->state = BT_CONNECTED;
4603 hci_connect_cfm(conn, ev->status);
4604 }
4605 } else {
4606 hci_connect_cfm(conn, ev->status);
4607 }
4608
4609 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
4610 conn->dst_type);
4611 if (params) {
4612 list_del_init(&params->action);
4613 if (params->conn) {
4614 hci_conn_drop(params->conn);
4615 hci_conn_put(params->conn);
4616 params->conn = NULL;
4617 }
4618 }
4619
4620 unlock:
4621 hci_update_background_scan(hdev);
4622 hci_dev_unlock(hdev);
4623 }
4624
4625 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
4626 struct sk_buff *skb)
4627 {
4628 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
4629 struct hci_conn *conn;
4630
4631 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4632
4633 if (ev->status)
4634 return;
4635
4636 hci_dev_lock(hdev);
4637
4638 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4639 if (conn) {
4640 conn->le_conn_interval = le16_to_cpu(ev->interval);
4641 conn->le_conn_latency = le16_to_cpu(ev->latency);
4642 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4643 }
4644
4645 hci_dev_unlock(hdev);
4646 }
4647
4648 /* This function requires the caller holds hdev->lock */
4649 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
4650 bdaddr_t *addr,
4651 u8 addr_type, u8 adv_type)
4652 {
4653 struct hci_conn *conn;
4654 struct hci_conn_params *params;
4655
4656 /* If the event is not connectable don't proceed further */
4657 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4658 return NULL;
4659
4660 /* Ignore if the device is blocked */
4661 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4662 return NULL;
4663
4664 /* Most controller will fail if we try to create new connections
4665 * while we have an existing one in slave role.
4666 */
4667 if (hdev->conn_hash.le_num_slave > 0)
4668 return NULL;
4669
4670 /* If we're not connectable only connect devices that we have in
4671 * our pend_le_conns list.
4672 */
4673 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
4674 addr_type);
4675 if (!params)
4676 return NULL;
4677
4678 if (!params->explicit_connect) {
4679 switch (params->auto_connect) {
4680 case HCI_AUTO_CONN_DIRECT:
4681 /* Only devices advertising with ADV_DIRECT_IND are
4682 * triggering a connection attempt. This is allowing
4683 * incoming connections from slave devices.
4684 */
4685 if (adv_type != LE_ADV_DIRECT_IND)
4686 return NULL;
4687 break;
4688 case HCI_AUTO_CONN_ALWAYS:
4689 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
4690 * are triggering a connection attempt. This means
4691 * that incoming connectioms from slave device are
4692 * accepted and also outgoing connections to slave
4693 * devices are established when found.
4694 */
4695 break;
4696 default:
4697 return NULL;
4698 }
4699 }
4700
4701 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4702 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER);
4703 if (!IS_ERR(conn)) {
4704 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
4705 * by higher layer that tried to connect, if no then
4706 * store the pointer since we don't really have any
4707 * other owner of the object besides the params that
4708 * triggered it. This way we can abort the connection if
4709 * the parameters get removed and keep the reference
4710 * count consistent once the connection is established.
4711 */
4712
4713 if (!params->explicit_connect)
4714 params->conn = hci_conn_get(conn);
4715
4716 return conn;
4717 }
4718
4719 switch (PTR_ERR(conn)) {
4720 case -EBUSY:
4721 /* If hci_connect() returns -EBUSY it means there is already
4722 * an LE connection attempt going on. Since controllers don't
4723 * support more than one connection attempt at the time, we
4724 * don't consider this an error case.
4725 */
4726 break;
4727 default:
4728 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4729 return NULL;
4730 }
4731
4732 return NULL;
4733 }
4734
4735 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4736 u8 bdaddr_type, bdaddr_t *direct_addr,
4737 u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
4738 {
4739 struct discovery_state *d = &hdev->discovery;
4740 struct smp_irk *irk;
4741 struct hci_conn *conn;
4742 bool match;
4743 u32 flags;
4744 u8 *ptr, real_len;
4745
4746 switch (type) {
4747 case LE_ADV_IND:
4748 case LE_ADV_DIRECT_IND:
4749 case LE_ADV_SCAN_IND:
4750 case LE_ADV_NONCONN_IND:
4751 case LE_ADV_SCAN_RSP:
4752 break;
4753 default:
4754 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
4755 "type: 0x%02x", type);
4756 return;
4757 }
4758
4759 /* Find the end of the data in case the report contains padded zero
4760 * bytes at the end causing an invalid length value.
4761 *
4762 * When data is NULL, len is 0 so there is no need for extra ptr
4763 * check as 'ptr < data + 0' is already false in such case.
4764 */
4765 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
4766 if (ptr + 1 + *ptr > data + len)
4767 break;
4768 }
4769
4770 real_len = ptr - data;
4771
4772 /* Adjust for actual length */
4773 if (len != real_len) {
4774 bt_dev_err_ratelimited(hdev, "advertising data len corrected");
4775 len = real_len;
4776 }
4777
4778 /* If the direct address is present, then this report is from
4779 * a LE Direct Advertising Report event. In that case it is
4780 * important to see if the address is matching the local
4781 * controller address.
4782 */
4783 if (direct_addr) {
4784 /* Only resolvable random addresses are valid for these
4785 * kind of reports and others can be ignored.
4786 */
4787 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
4788 return;
4789
4790 /* If the controller is not using resolvable random
4791 * addresses, then this report can be ignored.
4792 */
4793 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
4794 return;
4795
4796 /* If the local IRK of the controller does not match
4797 * with the resolvable random address provided, then
4798 * this report can be ignored.
4799 */
4800 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
4801 return;
4802 }
4803
4804 /* Check if we need to convert to identity address */
4805 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
4806 if (irk) {
4807 bdaddr = &irk->bdaddr;
4808 bdaddr_type = irk->addr_type;
4809 }
4810
4811 /* Check if we have been requested to connect to this device */
4812 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type);
4813 if (conn && type == LE_ADV_IND) {
4814 /* Store report for later inclusion by
4815 * mgmt_device_connected
4816 */
4817 memcpy(conn->le_adv_data, data, len);
4818 conn->le_adv_data_len = len;
4819 }
4820
4821 /* Passive scanning shouldn't trigger any device found events,
4822 * except for devices marked as CONN_REPORT for which we do send
4823 * device found events.
4824 */
4825 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4826 if (type == LE_ADV_DIRECT_IND)
4827 return;
4828
4829 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
4830 bdaddr, bdaddr_type))
4831 return;
4832
4833 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
4834 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4835 else
4836 flags = 0;
4837 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4838 rssi, flags, data, len, NULL, 0);
4839 return;
4840 }
4841
4842 /* When receiving non-connectable or scannable undirected
4843 * advertising reports, this means that the remote device is
4844 * not connectable and then clearly indicate this in the
4845 * device found event.
4846 *
4847 * When receiving a scan response, then there is no way to
4848 * know if the remote device is connectable or not. However
4849 * since scan responses are merged with a previously seen
4850 * advertising report, the flags field from that report
4851 * will be used.
4852 *
4853 * In the really unlikely case that a controller get confused
4854 * and just sends a scan response event, then it is marked as
4855 * not connectable as well.
4856 */
4857 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
4858 type == LE_ADV_SCAN_RSP)
4859 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4860 else
4861 flags = 0;
4862
4863 /* If there's nothing pending either store the data from this
4864 * event or send an immediate device found event if the data
4865 * should not be stored for later.
4866 */
4867 if (!has_pending_adv_report(hdev)) {
4868 /* If the report will trigger a SCAN_REQ store it for
4869 * later merging.
4870 */
4871 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4872 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4873 rssi, flags, data, len);
4874 return;
4875 }
4876
4877 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4878 rssi, flags, data, len, NULL, 0);
4879 return;
4880 }
4881
4882 /* Check if the pending report is for the same device as the new one */
4883 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
4884 bdaddr_type == d->last_adv_addr_type);
4885
4886 /* If the pending data doesn't match this report or this isn't a
4887 * scan response (e.g. we got a duplicate ADV_IND) then force
4888 * sending of the pending data.
4889 */
4890 if (type != LE_ADV_SCAN_RSP || !match) {
4891 /* Send out whatever is in the cache, but skip duplicates */
4892 if (!match)
4893 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4894 d->last_adv_addr_type, NULL,
4895 d->last_adv_rssi, d->last_adv_flags,
4896 d->last_adv_data,
4897 d->last_adv_data_len, NULL, 0);
4898
4899 /* If the new report will trigger a SCAN_REQ store it for
4900 * later merging.
4901 */
4902 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4903 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4904 rssi, flags, data, len);
4905 return;
4906 }
4907
4908 /* The advertising reports cannot be merged, so clear
4909 * the pending report and send out a device found event.
4910 */
4911 clear_pending_adv_report(hdev);
4912 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4913 rssi, flags, data, len, NULL, 0);
4914 return;
4915 }
4916
4917 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
4918 * the new event is a SCAN_RSP. We can therefore proceed with
4919 * sending a merged device found event.
4920 */
4921 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4922 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4923 d->last_adv_data, d->last_adv_data_len, data, len);
4924 clear_pending_adv_report(hdev);
4925 }
4926
4927 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4928 {
4929 u8 num_reports = skb->data[0];
4930 void *ptr = &skb->data[1];
4931
4932 hci_dev_lock(hdev);
4933
4934 while (num_reports--) {
4935 struct hci_ev_le_advertising_info *ev = ptr;
4936 s8 rssi;
4937
4938 rssi = ev->data[ev->length];
4939 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4940 ev->bdaddr_type, NULL, 0, rssi,
4941 ev->data, ev->length);
4942
4943 ptr += sizeof(*ev) + ev->length + 1;
4944 }
4945
4946 hci_dev_unlock(hdev);
4947 }
4948
4949 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
4950 struct sk_buff *skb)
4951 {
4952 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
4953 struct hci_conn *conn;
4954
4955 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4956
4957 hci_dev_lock(hdev);
4958
4959 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4960 if (conn) {
4961 if (!ev->status)
4962 memcpy(conn->features[0], ev->features, 8);
4963
4964 if (conn->state == BT_CONFIG) {
4965 __u8 status;
4966
4967 /* If the local controller supports slave-initiated
4968 * features exchange, but the remote controller does
4969 * not, then it is possible that the error code 0x1a
4970 * for unsupported remote feature gets returned.
4971 *
4972 * In this specific case, allow the connection to
4973 * transition into connected state and mark it as
4974 * successful.
4975 */
4976 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
4977 !conn->out && ev->status == 0x1a)
4978 status = 0x00;
4979 else
4980 status = ev->status;
4981
4982 conn->state = BT_CONNECTED;
4983 hci_connect_cfm(conn, status);
4984 hci_conn_drop(conn);
4985 }
4986 }
4987
4988 hci_dev_unlock(hdev);
4989 }
4990
4991 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4992 {
4993 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
4994 struct hci_cp_le_ltk_reply cp;
4995 struct hci_cp_le_ltk_neg_reply neg;
4996 struct hci_conn *conn;
4997 struct smp_ltk *ltk;
4998
4999 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
5000
5001 hci_dev_lock(hdev);
5002
5003 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5004 if (conn == NULL)
5005 goto not_found;
5006
5007 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
5008 if (!ltk)
5009 goto not_found;
5010
5011 if (smp_ltk_is_sc(ltk)) {
5012 /* With SC both EDiv and Rand are set to zero */
5013 if (ev->ediv || ev->rand)
5014 goto not_found;
5015 } else {
5016 /* For non-SC keys check that EDiv and Rand match */
5017 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
5018 goto not_found;
5019 }
5020
5021 memcpy(cp.ltk, ltk->val, ltk->enc_size);
5022 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
5023 cp.handle = cpu_to_le16(conn->handle);
5024
5025 conn->pending_sec_level = smp_ltk_sec_level(ltk);
5026
5027 conn->enc_key_size = ltk->enc_size;
5028
5029 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
5030
5031 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
5032 * temporary key used to encrypt a connection following
5033 * pairing. It is used during the Encrypted Session Setup to
5034 * distribute the keys. Later, security can be re-established
5035 * using a distributed LTK.
5036 */
5037 if (ltk->type == SMP_STK) {
5038 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5039 list_del_rcu(&ltk->list);
5040 kfree_rcu(ltk, rcu);
5041 } else {
5042 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5043 }
5044
5045 hci_dev_unlock(hdev);
5046
5047 return;
5048
5049 not_found:
5050 neg.handle = ev->handle;
5051 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
5052 hci_dev_unlock(hdev);
5053 }
5054
5055 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
5056 u8 reason)
5057 {
5058 struct hci_cp_le_conn_param_req_neg_reply cp;
5059
5060 cp.handle = cpu_to_le16(handle);
5061 cp.reason = reason;
5062
5063 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
5064 &cp);
5065 }
5066
5067 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
5068 struct sk_buff *skb)
5069 {
5070 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
5071 struct hci_cp_le_conn_param_req_reply cp;
5072 struct hci_conn *hcon;
5073 u16 handle, min, max, latency, timeout;
5074
5075 handle = le16_to_cpu(ev->handle);
5076 min = le16_to_cpu(ev->interval_min);
5077 max = le16_to_cpu(ev->interval_max);
5078 latency = le16_to_cpu(ev->latency);
5079 timeout = le16_to_cpu(ev->timeout);
5080
5081 hcon = hci_conn_hash_lookup_handle(hdev, handle);
5082 if (!hcon || hcon->state != BT_CONNECTED)
5083 return send_conn_param_neg_reply(hdev, handle,
5084 HCI_ERROR_UNKNOWN_CONN_ID);
5085
5086 if (hci_check_conn_params(min, max, latency, timeout))
5087 return send_conn_param_neg_reply(hdev, handle,
5088 HCI_ERROR_INVALID_LL_PARAMS);
5089
5090 if (hcon->role == HCI_ROLE_MASTER) {
5091 struct hci_conn_params *params;
5092 u8 store_hint;
5093
5094 hci_dev_lock(hdev);
5095
5096 params = hci_conn_params_lookup(hdev, &hcon->dst,
5097 hcon->dst_type);
5098 if (params) {
5099 params->conn_min_interval = min;
5100 params->conn_max_interval = max;
5101 params->conn_latency = latency;
5102 params->supervision_timeout = timeout;
5103 store_hint = 0x01;
5104 } else{
5105 store_hint = 0x00;
5106 }
5107
5108 hci_dev_unlock(hdev);
5109
5110 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
5111 store_hint, min, max, latency, timeout);
5112 }
5113
5114 cp.handle = ev->handle;
5115 cp.interval_min = ev->interval_min;
5116 cp.interval_max = ev->interval_max;
5117 cp.latency = ev->latency;
5118 cp.timeout = ev->timeout;
5119 cp.min_ce_len = 0;
5120 cp.max_ce_len = 0;
5121
5122 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
5123 }
5124
5125 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
5126 struct sk_buff *skb)
5127 {
5128 u8 num_reports = skb->data[0];
5129 void *ptr = &skb->data[1];
5130
5131 hci_dev_lock(hdev);
5132
5133 while (num_reports--) {
5134 struct hci_ev_le_direct_adv_info *ev = ptr;
5135
5136 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5137 ev->bdaddr_type, &ev->direct_addr,
5138 ev->direct_addr_type, ev->rssi, NULL, 0);
5139
5140 ptr += sizeof(*ev);
5141 }
5142
5143 hci_dev_unlock(hdev);
5144 }
5145
5146 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
5147 {
5148 struct hci_ev_le_meta *le_ev = (void *) skb->data;
5149
5150 skb_pull(skb, sizeof(*le_ev));
5151
5152 switch (le_ev->subevent) {
5153 case HCI_EV_LE_CONN_COMPLETE:
5154 hci_le_conn_complete_evt(hdev, skb);
5155 break;
5156
5157 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
5158 hci_le_conn_update_complete_evt(hdev, skb);
5159 break;
5160
5161 case HCI_EV_LE_ADVERTISING_REPORT:
5162 hci_le_adv_report_evt(hdev, skb);
5163 break;
5164
5165 case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
5166 hci_le_remote_feat_complete_evt(hdev, skb);
5167 break;
5168
5169 case HCI_EV_LE_LTK_REQ:
5170 hci_le_ltk_request_evt(hdev, skb);
5171 break;
5172
5173 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
5174 hci_le_remote_conn_param_req_evt(hdev, skb);
5175 break;
5176
5177 case HCI_EV_LE_DIRECT_ADV_REPORT:
5178 hci_le_direct_adv_report_evt(hdev, skb);
5179 break;
5180
5181 default:
5182 break;
5183 }
5184 }
5185
5186 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
5187 u8 event, struct sk_buff *skb)
5188 {
5189 struct hci_ev_cmd_complete *ev;
5190 struct hci_event_hdr *hdr;
5191
5192 if (!skb)
5193 return false;
5194
5195 if (skb->len < sizeof(*hdr)) {
5196 bt_dev_err(hdev, "too short HCI event");
5197 return false;
5198 }
5199
5200 hdr = (void *) skb->data;
5201 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5202
5203 if (event) {
5204 if (hdr->evt != event)
5205 return false;
5206 return true;
5207 }
5208
5209 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
5210 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
5211 hdr->evt);
5212 return false;
5213 }
5214
5215 if (skb->len < sizeof(*ev)) {
5216 bt_dev_err(hdev, "too short cmd_complete event");
5217 return false;
5218 }
5219
5220 ev = (void *) skb->data;
5221 skb_pull(skb, sizeof(*ev));
5222
5223 if (opcode != __le16_to_cpu(ev->opcode)) {
5224 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
5225 __le16_to_cpu(ev->opcode));
5226 return false;
5227 }
5228
5229 return true;
5230 }
5231
5232 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
5233 {
5234 struct hci_event_hdr *hdr = (void *) skb->data;
5235 hci_req_complete_t req_complete = NULL;
5236 hci_req_complete_skb_t req_complete_skb = NULL;
5237 struct sk_buff *orig_skb = NULL;
5238 u8 status = 0, event = hdr->evt, req_evt = 0;
5239 u16 opcode = HCI_OP_NOP;
5240
5241 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) {
5242 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
5243 opcode = __le16_to_cpu(cmd_hdr->opcode);
5244 hci_req_cmd_complete(hdev, opcode, status, &req_complete,
5245 &req_complete_skb);
5246 req_evt = event;
5247 }
5248
5249 /* If it looks like we might end up having to call
5250 * req_complete_skb, store a pristine copy of the skb since the
5251 * various handlers may modify the original one through
5252 * skb_pull() calls, etc.
5253 */
5254 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
5255 event == HCI_EV_CMD_COMPLETE)
5256 orig_skb = skb_clone(skb, GFP_KERNEL);
5257
5258 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5259
5260 switch (event) {
5261 case HCI_EV_INQUIRY_COMPLETE:
5262 hci_inquiry_complete_evt(hdev, skb);
5263 break;
5264
5265 case HCI_EV_INQUIRY_RESULT:
5266 hci_inquiry_result_evt(hdev, skb);
5267 break;
5268
5269 case HCI_EV_CONN_COMPLETE:
5270 hci_conn_complete_evt(hdev, skb);
5271 break;
5272
5273 case HCI_EV_CONN_REQUEST:
5274 hci_conn_request_evt(hdev, skb);
5275 break;
5276
5277 case HCI_EV_DISCONN_COMPLETE:
5278 hci_disconn_complete_evt(hdev, skb);
5279 break;
5280
5281 case HCI_EV_AUTH_COMPLETE:
5282 hci_auth_complete_evt(hdev, skb);
5283 break;
5284
5285 case HCI_EV_REMOTE_NAME:
5286 hci_remote_name_evt(hdev, skb);
5287 break;
5288
5289 case HCI_EV_ENCRYPT_CHANGE:
5290 hci_encrypt_change_evt(hdev, skb);
5291 break;
5292
5293 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
5294 hci_change_link_key_complete_evt(hdev, skb);
5295 break;
5296
5297 case HCI_EV_REMOTE_FEATURES:
5298 hci_remote_features_evt(hdev, skb);
5299 break;
5300
5301 case HCI_EV_CMD_COMPLETE:
5302 hci_cmd_complete_evt(hdev, skb, &opcode, &status,
5303 &req_complete, &req_complete_skb);
5304 break;
5305
5306 case HCI_EV_CMD_STATUS:
5307 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
5308 &req_complete_skb);
5309 break;
5310
5311 case HCI_EV_HARDWARE_ERROR:
5312 hci_hardware_error_evt(hdev, skb);
5313 break;
5314
5315 case HCI_EV_ROLE_CHANGE:
5316 hci_role_change_evt(hdev, skb);
5317 break;
5318
5319 case HCI_EV_NUM_COMP_PKTS:
5320 hci_num_comp_pkts_evt(hdev, skb);
5321 break;
5322
5323 case HCI_EV_MODE_CHANGE:
5324 hci_mode_change_evt(hdev, skb);
5325 break;
5326
5327 case HCI_EV_PIN_CODE_REQ:
5328 hci_pin_code_request_evt(hdev, skb);
5329 break;
5330
5331 case HCI_EV_LINK_KEY_REQ:
5332 hci_link_key_request_evt(hdev, skb);
5333 break;
5334
5335 case HCI_EV_LINK_KEY_NOTIFY:
5336 hci_link_key_notify_evt(hdev, skb);
5337 break;
5338
5339 case HCI_EV_CLOCK_OFFSET:
5340 hci_clock_offset_evt(hdev, skb);
5341 break;
5342
5343 case HCI_EV_PKT_TYPE_CHANGE:
5344 hci_pkt_type_change_evt(hdev, skb);
5345 break;
5346
5347 case HCI_EV_PSCAN_REP_MODE:
5348 hci_pscan_rep_mode_evt(hdev, skb);
5349 break;
5350
5351 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
5352 hci_inquiry_result_with_rssi_evt(hdev, skb);
5353 break;
5354
5355 case HCI_EV_REMOTE_EXT_FEATURES:
5356 hci_remote_ext_features_evt(hdev, skb);
5357 break;
5358
5359 case HCI_EV_SYNC_CONN_COMPLETE:
5360 hci_sync_conn_complete_evt(hdev, skb);
5361 break;
5362
5363 case HCI_EV_EXTENDED_INQUIRY_RESULT:
5364 hci_extended_inquiry_result_evt(hdev, skb);
5365 break;
5366
5367 case HCI_EV_KEY_REFRESH_COMPLETE:
5368 hci_key_refresh_complete_evt(hdev, skb);
5369 break;
5370
5371 case HCI_EV_IO_CAPA_REQUEST:
5372 hci_io_capa_request_evt(hdev, skb);
5373 break;
5374
5375 case HCI_EV_IO_CAPA_REPLY:
5376 hci_io_capa_reply_evt(hdev, skb);
5377 break;
5378
5379 case HCI_EV_USER_CONFIRM_REQUEST:
5380 hci_user_confirm_request_evt(hdev, skb);
5381 break;
5382
5383 case HCI_EV_USER_PASSKEY_REQUEST:
5384 hci_user_passkey_request_evt(hdev, skb);
5385 break;
5386
5387 case HCI_EV_USER_PASSKEY_NOTIFY:
5388 hci_user_passkey_notify_evt(hdev, skb);
5389 break;
5390
5391 case HCI_EV_KEYPRESS_NOTIFY:
5392 hci_keypress_notify_evt(hdev, skb);
5393 break;
5394
5395 case HCI_EV_SIMPLE_PAIR_COMPLETE:
5396 hci_simple_pair_complete_evt(hdev, skb);
5397 break;
5398
5399 case HCI_EV_REMOTE_HOST_FEATURES:
5400 hci_remote_host_features_evt(hdev, skb);
5401 break;
5402
5403 case HCI_EV_LE_META:
5404 hci_le_meta_evt(hdev, skb);
5405 break;
5406
5407 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
5408 hci_remote_oob_data_request_evt(hdev, skb);
5409 break;
5410
5411 #if IS_ENABLED(CONFIG_BT_HS)
5412 case HCI_EV_CHANNEL_SELECTED:
5413 hci_chan_selected_evt(hdev, skb);
5414 break;
5415
5416 case HCI_EV_PHY_LINK_COMPLETE:
5417 hci_phy_link_complete_evt(hdev, skb);
5418 break;
5419
5420 case HCI_EV_LOGICAL_LINK_COMPLETE:
5421 hci_loglink_complete_evt(hdev, skb);
5422 break;
5423
5424 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
5425 hci_disconn_loglink_complete_evt(hdev, skb);
5426 break;
5427
5428 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
5429 hci_disconn_phylink_complete_evt(hdev, skb);
5430 break;
5431 #endif
5432
5433 case HCI_EV_NUM_COMP_BLOCKS:
5434 hci_num_comp_blocks_evt(hdev, skb);
5435 break;
5436
5437 default:
5438 BT_DBG("%s event 0x%2.2x", hdev->name, event);
5439 break;
5440 }
5441
5442 if (req_complete) {
5443 req_complete(hdev, status, opcode);
5444 } else if (req_complete_skb) {
5445 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
5446 kfree_skb(orig_skb);
5447 orig_skb = NULL;
5448 }
5449 req_complete_skb(hdev, status, opcode, orig_skb);
5450 }
5451
5452 kfree_skb(orig_skb);
5453 kfree_skb(skb);
5454 hdev->stat.evt_rx++;
5455 }
CRIS linux kernel tree