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ARM: dma-api: fix max_pfn off-by-one error in __dma_supported()
[linux/fpc-iii.git] / net / bluetooth / hci_event.c
blob6ddc4a74a5e426ab011c6b1bf8eee8a57d5bd9ff
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 hci_bdaddr_list_clear(&hdev->le_resolv_list);
225 }
226
227 static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
228 struct sk_buff *skb)
229 {
230 struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
231 struct hci_cp_read_stored_link_key *sent;
232
233 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
234
235 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
236 if (!sent)
237 return;
238
239 if (!rp->status && sent->read_all == 0x01) {
240 hdev->stored_max_keys = rp->max_keys;
241 hdev->stored_num_keys = rp->num_keys;
242 }
243 }
244
245 static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
246 struct sk_buff *skb)
247 {
248 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;
249
250 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
251
252 if (rp->status)
253 return;
254
255 if (rp->num_keys <= hdev->stored_num_keys)
256 hdev->stored_num_keys -= rp->num_keys;
257 else
258 hdev->stored_num_keys = 0;
259 }
260
261 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
262 {
263 __u8 status = *((__u8 *) skb->data);
264 void *sent;
265
266 BT_DBG("%s status 0x%2.2x", hdev->name, status);
267
268 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
269 if (!sent)
270 return;
271
272 hci_dev_lock(hdev);
273
274 if (hci_dev_test_flag(hdev, HCI_MGMT))
275 mgmt_set_local_name_complete(hdev, sent, status);
276 else if (!status)
277 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
278
279 hci_dev_unlock(hdev);
280 }
281
282 static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
283 {
284 struct hci_rp_read_local_name *rp = (void *) skb->data;
285
286 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
287
288 if (rp->status)
289 return;
290
291 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
292 hci_dev_test_flag(hdev, HCI_CONFIG))
293 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
294 }
295
296 static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
297 {
298 __u8 status = *((__u8 *) skb->data);
299 void *sent;
300
301 BT_DBG("%s status 0x%2.2x", hdev->name, status);
302
303 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
304 if (!sent)
305 return;
306
307 hci_dev_lock(hdev);
308
309 if (!status) {
310 __u8 param = *((__u8 *) sent);
311
312 if (param == AUTH_ENABLED)
313 set_bit(HCI_AUTH, &hdev->flags);
314 else
315 clear_bit(HCI_AUTH, &hdev->flags);
316 }
317
318 if (hci_dev_test_flag(hdev, HCI_MGMT))
319 mgmt_auth_enable_complete(hdev, status);
320
321 hci_dev_unlock(hdev);
322 }
323
324 static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
325 {
326 __u8 status = *((__u8 *) skb->data);
327 __u8 param;
328 void *sent;
329
330 BT_DBG("%s status 0x%2.2x", hdev->name, status);
331
332 if (status)
333 return;
334
335 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
336 if (!sent)
337 return;
338
339 param = *((__u8 *) sent);
340
341 if (param)
342 set_bit(HCI_ENCRYPT, &hdev->flags);
343 else
344 clear_bit(HCI_ENCRYPT, &hdev->flags);
345 }
346
347 static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
348 {
349 __u8 status = *((__u8 *) skb->data);
350 __u8 param;
351 void *sent;
352
353 BT_DBG("%s status 0x%2.2x", hdev->name, status);
354
355 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
356 if (!sent)
357 return;
358
359 param = *((__u8 *) sent);
360
361 hci_dev_lock(hdev);
362
363 if (status) {
364 hdev->discov_timeout = 0;
365 goto done;
366 }
367
368 if (param & SCAN_INQUIRY)
369 set_bit(HCI_ISCAN, &hdev->flags);
370 else
371 clear_bit(HCI_ISCAN, &hdev->flags);
372
373 if (param & SCAN_PAGE)
374 set_bit(HCI_PSCAN, &hdev->flags);
375 else
376 clear_bit(HCI_PSCAN, &hdev->flags);
377
378 done:
379 hci_dev_unlock(hdev);
380 }
381
382 static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
383 {
384 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
385
386 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
387
388 if (rp->status)
389 return;
390
391 memcpy(hdev->dev_class, rp->dev_class, 3);
392
393 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
394 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
395 }
396
397 static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
398 {
399 __u8 status = *((__u8 *) skb->data);
400 void *sent;
401
402 BT_DBG("%s status 0x%2.2x", hdev->name, status);
403
404 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
405 if (!sent)
406 return;
407
408 hci_dev_lock(hdev);
409
410 if (status == 0)
411 memcpy(hdev->dev_class, sent, 3);
412
413 if (hci_dev_test_flag(hdev, HCI_MGMT))
414 mgmt_set_class_of_dev_complete(hdev, sent, status);
415
416 hci_dev_unlock(hdev);
417 }
418
419 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
420 {
421 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
422 __u16 setting;
423
424 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
425
426 if (rp->status)
427 return;
428
429 setting = __le16_to_cpu(rp->voice_setting);
430
431 if (hdev->voice_setting == setting)
432 return;
433
434 hdev->voice_setting = setting;
435
436 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
437
438 if (hdev->notify)
439 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
440 }
441
442 static void hci_cc_write_voice_setting(struct hci_dev *hdev,
443 struct sk_buff *skb)
444 {
445 __u8 status = *((__u8 *) skb->data);
446 __u16 setting;
447 void *sent;
448
449 BT_DBG("%s status 0x%2.2x", hdev->name, status);
450
451 if (status)
452 return;
453
454 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
455 if (!sent)
456 return;
457
458 setting = get_unaligned_le16(sent);
459
460 if (hdev->voice_setting == setting)
461 return;
462
463 hdev->voice_setting = setting;
464
465 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
466
467 if (hdev->notify)
468 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
469 }
470
471 static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
472 struct sk_buff *skb)
473 {
474 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
475
476 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
477
478 if (rp->status)
479 return;
480
481 hdev->num_iac = rp->num_iac;
482
483 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
484 }
485
486 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
487 {
488 __u8 status = *((__u8 *) skb->data);
489 struct hci_cp_write_ssp_mode *sent;
490
491 BT_DBG("%s status 0x%2.2x", hdev->name, status);
492
493 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
494 if (!sent)
495 return;
496
497 hci_dev_lock(hdev);
498
499 if (!status) {
500 if (sent->mode)
501 hdev->features[1][0] |= LMP_HOST_SSP;
502 else
503 hdev->features[1][0] &= ~LMP_HOST_SSP;
504 }
505
506 if (hci_dev_test_flag(hdev, HCI_MGMT))
507 mgmt_ssp_enable_complete(hdev, sent->mode, status);
508 else if (!status) {
509 if (sent->mode)
510 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
511 else
512 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
513 }
514
515 hci_dev_unlock(hdev);
516 }
517
518 static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
519 {
520 u8 status = *((u8 *) skb->data);
521 struct hci_cp_write_sc_support *sent;
522
523 BT_DBG("%s status 0x%2.2x", hdev->name, status);
524
525 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
526 if (!sent)
527 return;
528
529 hci_dev_lock(hdev);
530
531 if (!status) {
532 if (sent->support)
533 hdev->features[1][0] |= LMP_HOST_SC;
534 else
535 hdev->features[1][0] &= ~LMP_HOST_SC;
536 }
537
538 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
539 if (sent->support)
540 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
541 else
542 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
543 }
544
545 hci_dev_unlock(hdev);
546 }
547
548 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
549 {
550 struct hci_rp_read_local_version *rp = (void *) skb->data;
551
552 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
553
554 if (rp->status)
555 return;
556
557 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
558 hci_dev_test_flag(hdev, HCI_CONFIG)) {
559 hdev->hci_ver = rp->hci_ver;
560 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
561 hdev->lmp_ver = rp->lmp_ver;
562 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
563 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
564 }
565 }
566
567 static void hci_cc_read_local_commands(struct hci_dev *hdev,
568 struct sk_buff *skb)
569 {
570 struct hci_rp_read_local_commands *rp = (void *) skb->data;
571
572 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
573
574 if (rp->status)
575 return;
576
577 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
578 hci_dev_test_flag(hdev, HCI_CONFIG))
579 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
580 }
581
582 static void hci_cc_read_auth_payload_timeout(struct hci_dev *hdev,
583 struct sk_buff *skb)
584 {
585 struct hci_rp_read_auth_payload_to *rp = (void *)skb->data;
586 struct hci_conn *conn;
587
588 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
589
590 if (rp->status)
591 return;
592
593 hci_dev_lock(hdev);
594
595 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
596 if (conn)
597 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
598
599 hci_dev_unlock(hdev);
600 }
601
602 static void hci_cc_write_auth_payload_timeout(struct hci_dev *hdev,
603 struct sk_buff *skb)
604 {
605 struct hci_rp_write_auth_payload_to *rp = (void *)skb->data;
606 struct hci_conn *conn;
607 void *sent;
608
609 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
610
611 if (rp->status)
612 return;
613
614 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
615 if (!sent)
616 return;
617
618 hci_dev_lock(hdev);
619
620 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
621 if (conn)
622 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
623
624 hci_dev_unlock(hdev);
625 }
626
627 static void hci_cc_read_local_features(struct hci_dev *hdev,
628 struct sk_buff *skb)
629 {
630 struct hci_rp_read_local_features *rp = (void *) skb->data;
631
632 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
633
634 if (rp->status)
635 return;
636
637 memcpy(hdev->features, rp->features, 8);
638
639 /* Adjust default settings according to features
640 * supported by device. */
641
642 if (hdev->features[0][0] & LMP_3SLOT)
643 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
644
645 if (hdev->features[0][0] & LMP_5SLOT)
646 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
647
648 if (hdev->features[0][1] & LMP_HV2) {
649 hdev->pkt_type |= (HCI_HV2);
650 hdev->esco_type |= (ESCO_HV2);
651 }
652
653 if (hdev->features[0][1] & LMP_HV3) {
654 hdev->pkt_type |= (HCI_HV3);
655 hdev->esco_type |= (ESCO_HV3);
656 }
657
658 if (lmp_esco_capable(hdev))
659 hdev->esco_type |= (ESCO_EV3);
660
661 if (hdev->features[0][4] & LMP_EV4)
662 hdev->esco_type |= (ESCO_EV4);
663
664 if (hdev->features[0][4] & LMP_EV5)
665 hdev->esco_type |= (ESCO_EV5);
666
667 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
668 hdev->esco_type |= (ESCO_2EV3);
669
670 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
671 hdev->esco_type |= (ESCO_3EV3);
672
673 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
674 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
675 }
676
677 static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
678 struct sk_buff *skb)
679 {
680 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
681
682 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
683
684 if (rp->status)
685 return;
686
687 if (hdev->max_page < rp->max_page)
688 hdev->max_page = rp->max_page;
689
690 if (rp->page < HCI_MAX_PAGES)
691 memcpy(hdev->features[rp->page], rp->features, 8);
692 }
693
694 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
695 struct sk_buff *skb)
696 {
697 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
698
699 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
700
701 if (rp->status)
702 return;
703
704 hdev->flow_ctl_mode = rp->mode;
705 }
706
707 static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
708 {
709 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
710
711 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
712
713 if (rp->status)
714 return;
715
716 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
717 hdev->sco_mtu = rp->sco_mtu;
718 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
719 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
720
721 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
722 hdev->sco_mtu = 64;
723 hdev->sco_pkts = 8;
724 }
725
726 hdev->acl_cnt = hdev->acl_pkts;
727 hdev->sco_cnt = hdev->sco_pkts;
728
729 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
730 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
731 }
732
733 static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
734 {
735 struct hci_rp_read_bd_addr *rp = (void *) skb->data;
736
737 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
738
739 if (rp->status)
740 return;
741
742 if (test_bit(HCI_INIT, &hdev->flags))
743 bacpy(&hdev->bdaddr, &rp->bdaddr);
744
745 if (hci_dev_test_flag(hdev, HCI_SETUP))
746 bacpy(&hdev->setup_addr, &rp->bdaddr);
747 }
748
749 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
750 struct sk_buff *skb)
751 {
752 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;
753
754 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
755
756 if (rp->status)
757 return;
758
759 if (test_bit(HCI_INIT, &hdev->flags)) {
760 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
761 hdev->page_scan_window = __le16_to_cpu(rp->window);
762 }
763 }
764
765 static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
766 struct sk_buff *skb)
767 {
768 u8 status = *((u8 *) skb->data);
769 struct hci_cp_write_page_scan_activity *sent;
770
771 BT_DBG("%s status 0x%2.2x", hdev->name, status);
772
773 if (status)
774 return;
775
776 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
777 if (!sent)
778 return;
779
780 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
781 hdev->page_scan_window = __le16_to_cpu(sent->window);
782 }
783
784 static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
785 struct sk_buff *skb)
786 {
787 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
788
789 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
790
791 if (rp->status)
792 return;
793
794 if (test_bit(HCI_INIT, &hdev->flags))
795 hdev->page_scan_type = rp->type;
796 }
797
798 static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
799 struct sk_buff *skb)
800 {
801 u8 status = *((u8 *) skb->data);
802 u8 *type;
803
804 BT_DBG("%s status 0x%2.2x", hdev->name, status);
805
806 if (status)
807 return;
808
809 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
810 if (type)
811 hdev->page_scan_type = *type;
812 }
813
814 static void hci_cc_read_data_block_size(struct hci_dev *hdev,
815 struct sk_buff *skb)
816 {
817 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
818
819 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
820
821 if (rp->status)
822 return;
823
824 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
825 hdev->block_len = __le16_to_cpu(rp->block_len);
826 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
827
828 hdev->block_cnt = hdev->num_blocks;
829
830 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
831 hdev->block_cnt, hdev->block_len);
832 }
833
834 static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
835 {
836 struct hci_rp_read_clock *rp = (void *) skb->data;
837 struct hci_cp_read_clock *cp;
838 struct hci_conn *conn;
839
840 BT_DBG("%s", hdev->name);
841
842 if (skb->len < sizeof(*rp))
843 return;
844
845 if (rp->status)
846 return;
847
848 hci_dev_lock(hdev);
849
850 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
851 if (!cp)
852 goto unlock;
853
854 if (cp->which == 0x00) {
855 hdev->clock = le32_to_cpu(rp->clock);
856 goto unlock;
857 }
858
859 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
860 if (conn) {
861 conn->clock = le32_to_cpu(rp->clock);
862 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
863 }
864
865 unlock:
866 hci_dev_unlock(hdev);
867 }
868
869 static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
870 struct sk_buff *skb)
871 {
872 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
873
874 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
875
876 if (rp->status)
877 return;
878
879 hdev->amp_status = rp->amp_status;
880 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
881 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
882 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
883 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
884 hdev->amp_type = rp->amp_type;
885 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
886 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
887 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
888 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
889 }
890
891 static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
892 struct sk_buff *skb)
893 {
894 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
895
896 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
897
898 if (rp->status)
899 return;
900
901 hdev->inq_tx_power = rp->tx_power;
902 }
903
904 static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
905 {
906 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
907 struct hci_cp_pin_code_reply *cp;
908 struct hci_conn *conn;
909
910 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
911
912 hci_dev_lock(hdev);
913
914 if (hci_dev_test_flag(hdev, HCI_MGMT))
915 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
916
917 if (rp->status)
918 goto unlock;
919
920 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
921 if (!cp)
922 goto unlock;
923
924 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
925 if (conn)
926 conn->pin_length = cp->pin_len;
927
928 unlock:
929 hci_dev_unlock(hdev);
930 }
931
932 static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
933 {
934 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
935
936 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
937
938 hci_dev_lock(hdev);
939
940 if (hci_dev_test_flag(hdev, HCI_MGMT))
941 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
942 rp->status);
943
944 hci_dev_unlock(hdev);
945 }
946
947 static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
948 struct sk_buff *skb)
949 {
950 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
951
952 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
953
954 if (rp->status)
955 return;
956
957 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
958 hdev->le_pkts = rp->le_max_pkt;
959
960 hdev->le_cnt = hdev->le_pkts;
961
962 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
963 }
964
965 static void hci_cc_le_read_local_features(struct hci_dev *hdev,
966 struct sk_buff *skb)
967 {
968 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
969
970 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
971
972 if (rp->status)
973 return;
974
975 memcpy(hdev->le_features, rp->features, 8);
976 }
977
978 static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
979 struct sk_buff *skb)
980 {
981 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
982
983 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
984
985 if (rp->status)
986 return;
987
988 hdev->adv_tx_power = rp->tx_power;
989 }
990
991 static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
992 {
993 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
994
995 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
996
997 hci_dev_lock(hdev);
998
999 if (hci_dev_test_flag(hdev, HCI_MGMT))
1000 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1001 rp->status);
1002
1003 hci_dev_unlock(hdev);
1004 }
1005
1006 static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
1007 struct sk_buff *skb)
1008 {
1009 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1010
1011 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1012
1013 hci_dev_lock(hdev);
1014
1015 if (hci_dev_test_flag(hdev, HCI_MGMT))
1016 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1017 ACL_LINK, 0, rp->status);
1018
1019 hci_dev_unlock(hdev);
1020 }
1021
1022 static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
1023 {
1024 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1025
1026 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1027
1028 hci_dev_lock(hdev);
1029
1030 if (hci_dev_test_flag(hdev, HCI_MGMT))
1031 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1032 0, rp->status);
1033
1034 hci_dev_unlock(hdev);
1035 }
1036
1037 static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
1038 struct sk_buff *skb)
1039 {
1040 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1041
1042 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1043
1044 hci_dev_lock(hdev);
1045
1046 if (hci_dev_test_flag(hdev, HCI_MGMT))
1047 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1048 ACL_LINK, 0, rp->status);
1049
1050 hci_dev_unlock(hdev);
1051 }
1052
1053 static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
1054 struct sk_buff *skb)
1055 {
1056 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
1057
1058 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1059 }
1060
1061 static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
1062 struct sk_buff *skb)
1063 {
1064 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1065
1066 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1067 }
1068
1069 static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1070 {
1071 __u8 status = *((__u8 *) skb->data);
1072 bdaddr_t *sent;
1073
1074 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1075
1076 if (status)
1077 return;
1078
1079 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1080 if (!sent)
1081 return;
1082
1083 hci_dev_lock(hdev);
1084
1085 bacpy(&hdev->random_addr, sent);
1086
1087 hci_dev_unlock(hdev);
1088 }
1089
1090 static void hci_cc_le_set_default_phy(struct hci_dev *hdev, struct sk_buff *skb)
1091 {
1092 __u8 status = *((__u8 *) skb->data);
1093 struct hci_cp_le_set_default_phy *cp;
1094
1095 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1096
1097 if (status)
1098 return;
1099
1100 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1101 if (!cp)
1102 return;
1103
1104 hci_dev_lock(hdev);
1105
1106 hdev->le_tx_def_phys = cp->tx_phys;
1107 hdev->le_rx_def_phys = cp->rx_phys;
1108
1109 hci_dev_unlock(hdev);
1110 }
1111
1112 static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev,
1113 struct sk_buff *skb)
1114 {
1115 __u8 status = *((__u8 *) skb->data);
1116 struct hci_cp_le_set_adv_set_rand_addr *cp;
1117 struct adv_info *adv_instance;
1118
1119 if (status)
1120 return;
1121
1122 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1123 if (!cp)
1124 return;
1125
1126 hci_dev_lock(hdev);
1127
1128 if (!hdev->cur_adv_instance) {
1129 /* Store in hdev for instance 0 (Set adv and Directed advs) */
1130 bacpy(&hdev->random_addr, &cp->bdaddr);
1131 } else {
1132 adv_instance = hci_find_adv_instance(hdev,
1133 hdev->cur_adv_instance);
1134 if (adv_instance)
1135 bacpy(&adv_instance->random_addr, &cp->bdaddr);
1136 }
1137
1138 hci_dev_unlock(hdev);
1139 }
1140
1141 static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1142 {
1143 __u8 *sent, status = *((__u8 *) skb->data);
1144
1145 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1146
1147 if (status)
1148 return;
1149
1150 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1151 if (!sent)
1152 return;
1153
1154 hci_dev_lock(hdev);
1155
1156 /* If we're doing connection initiation as peripheral. Set a
1157 * timeout in case something goes wrong.
1158 */
1159 if (*sent) {
1160 struct hci_conn *conn;
1161
1162 hci_dev_set_flag(hdev, HCI_LE_ADV);
1163
1164 conn = hci_lookup_le_connect(hdev);
1165 if (conn)
1166 queue_delayed_work(hdev->workqueue,
1167 &conn->le_conn_timeout,
1168 conn->conn_timeout);
1169 } else {
1170 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1171 }
1172
1173 hci_dev_unlock(hdev);
1174 }
1175
1176 static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev,
1177 struct sk_buff *skb)
1178 {
1179 struct hci_cp_le_set_ext_adv_enable *cp;
1180 __u8 status = *((__u8 *) skb->data);
1181
1182 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1183
1184 if (status)
1185 return;
1186
1187 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1188 if (!cp)
1189 return;
1190
1191 hci_dev_lock(hdev);
1192
1193 if (cp->enable) {
1194 struct hci_conn *conn;
1195
1196 hci_dev_set_flag(hdev, HCI_LE_ADV);
1197
1198 conn = hci_lookup_le_connect(hdev);
1199 if (conn)
1200 queue_delayed_work(hdev->workqueue,
1201 &conn->le_conn_timeout,
1202 conn->conn_timeout);
1203 } else {
1204 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1205 }
1206
1207 hci_dev_unlock(hdev);
1208 }
1209
1210 static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1211 {
1212 struct hci_cp_le_set_scan_param *cp;
1213 __u8 status = *((__u8 *) skb->data);
1214
1215 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1216
1217 if (status)
1218 return;
1219
1220 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1221 if (!cp)
1222 return;
1223
1224 hci_dev_lock(hdev);
1225
1226 hdev->le_scan_type = cp->type;
1227
1228 hci_dev_unlock(hdev);
1229 }
1230
1231 static void hci_cc_le_set_ext_scan_param(struct hci_dev *hdev,
1232 struct sk_buff *skb)
1233 {
1234 struct hci_cp_le_set_ext_scan_params *cp;
1235 __u8 status = *((__u8 *) skb->data);
1236 struct hci_cp_le_scan_phy_params *phy_param;
1237
1238 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1239
1240 if (status)
1241 return;
1242
1243 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1244 if (!cp)
1245 return;
1246
1247 phy_param = (void *)cp->data;
1248
1249 hci_dev_lock(hdev);
1250
1251 hdev->le_scan_type = phy_param->type;
1252
1253 hci_dev_unlock(hdev);
1254 }
1255
1256 static bool has_pending_adv_report(struct hci_dev *hdev)
1257 {
1258 struct discovery_state *d = &hdev->discovery;
1259
1260 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1261 }
1262
1263 static void clear_pending_adv_report(struct hci_dev *hdev)
1264 {
1265 struct discovery_state *d = &hdev->discovery;
1266
1267 bacpy(&d->last_adv_addr, BDADDR_ANY);
1268 d->last_adv_data_len = 0;
1269 }
1270
1271 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1272 u8 bdaddr_type, s8 rssi, u32 flags,
1273 u8 *data, u8 len)
1274 {
1275 struct discovery_state *d = &hdev->discovery;
1276
1277 bacpy(&d->last_adv_addr, bdaddr);
1278 d->last_adv_addr_type = bdaddr_type;
1279 d->last_adv_rssi = rssi;
1280 d->last_adv_flags = flags;
1281 memcpy(d->last_adv_data, data, len);
1282 d->last_adv_data_len = len;
1283 }
1284
1285 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1286 {
1287 hci_dev_lock(hdev);
1288
1289 switch (enable) {
1290 case LE_SCAN_ENABLE:
1291 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1292 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1293 clear_pending_adv_report(hdev);
1294 break;
1295
1296 case LE_SCAN_DISABLE:
1297 /* We do this here instead of when setting DISCOVERY_STOPPED
1298 * since the latter would potentially require waiting for
1299 * inquiry to stop too.
1300 */
1301 if (has_pending_adv_report(hdev)) {
1302 struct discovery_state *d = &hdev->discovery;
1303
1304 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1305 d->last_adv_addr_type, NULL,
1306 d->last_adv_rssi, d->last_adv_flags,
1307 d->last_adv_data,
1308 d->last_adv_data_len, NULL, 0);
1309 }
1310
1311 /* Cancel this timer so that we don't try to disable scanning
1312 * when it's already disabled.
1313 */
1314 cancel_delayed_work(&hdev->le_scan_disable);
1315
1316 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1317
1318 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1319 * interrupted scanning due to a connect request. Mark
1320 * therefore discovery as stopped. If this was not
1321 * because of a connect request advertising might have
1322 * been disabled because of active scanning, so
1323 * re-enable it again if necessary.
1324 */
1325 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1326 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1327 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1328 hdev->discovery.state == DISCOVERY_FINDING)
1329 hci_req_reenable_advertising(hdev);
1330
1331 break;
1332
1333 default:
1334 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1335 enable);
1336 break;
1337 }
1338
1339 hci_dev_unlock(hdev);
1340 }
1341
1342 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1343 struct sk_buff *skb)
1344 {
1345 struct hci_cp_le_set_scan_enable *cp;
1346 __u8 status = *((__u8 *) skb->data);
1347
1348 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1349
1350 if (status)
1351 return;
1352
1353 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1354 if (!cp)
1355 return;
1356
1357 le_set_scan_enable_complete(hdev, cp->enable);
1358 }
1359
1360 static void hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev,
1361 struct sk_buff *skb)
1362 {
1363 struct hci_cp_le_set_ext_scan_enable *cp;
1364 __u8 status = *((__u8 *) skb->data);
1365
1366 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1367
1368 if (status)
1369 return;
1370
1371 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1372 if (!cp)
1373 return;
1374
1375 le_set_scan_enable_complete(hdev, cp->enable);
1376 }
1377
1378 static void hci_cc_le_read_num_adv_sets(struct hci_dev *hdev,
1379 struct sk_buff *skb)
1380 {
1381 struct hci_rp_le_read_num_supported_adv_sets *rp = (void *) skb->data;
1382
1383 BT_DBG("%s status 0x%2.2x No of Adv sets %u", hdev->name, rp->status,
1384 rp->num_of_sets);
1385
1386 if (rp->status)
1387 return;
1388
1389 hdev->le_num_of_adv_sets = rp->num_of_sets;
1390 }
1391
1392 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1393 struct sk_buff *skb)
1394 {
1395 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1396
1397 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1398
1399 if (rp->status)
1400 return;
1401
1402 hdev->le_white_list_size = rp->size;
1403 }
1404
1405 static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1406 struct sk_buff *skb)
1407 {
1408 __u8 status = *((__u8 *) skb->data);
1409
1410 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1411
1412 if (status)
1413 return;
1414
1415 hci_bdaddr_list_clear(&hdev->le_white_list);
1416 }
1417
1418 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1419 struct sk_buff *skb)
1420 {
1421 struct hci_cp_le_add_to_white_list *sent;
1422 __u8 status = *((__u8 *) skb->data);
1423
1424 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1425
1426 if (status)
1427 return;
1428
1429 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1430 if (!sent)
1431 return;
1432
1433 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1434 sent->bdaddr_type);
1435 }
1436
1437 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1438 struct sk_buff *skb)
1439 {
1440 struct hci_cp_le_del_from_white_list *sent;
1441 __u8 status = *((__u8 *) skb->data);
1442
1443 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1444
1445 if (status)
1446 return;
1447
1448 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1449 if (!sent)
1450 return;
1451
1452 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1453 sent->bdaddr_type);
1454 }
1455
1456 static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1457 struct sk_buff *skb)
1458 {
1459 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1460
1461 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1462
1463 if (rp->status)
1464 return;
1465
1466 memcpy(hdev->le_states, rp->le_states, 8);
1467 }
1468
1469 static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1470 struct sk_buff *skb)
1471 {
1472 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1473
1474 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1475
1476 if (rp->status)
1477 return;
1478
1479 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1480 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1481 }
1482
1483 static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1484 struct sk_buff *skb)
1485 {
1486 struct hci_cp_le_write_def_data_len *sent;
1487 __u8 status = *((__u8 *) skb->data);
1488
1489 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1490
1491 if (status)
1492 return;
1493
1494 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1495 if (!sent)
1496 return;
1497
1498 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1499 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1500 }
1501
1502 static void hci_cc_le_add_to_resolv_list(struct hci_dev *hdev,
1503 struct sk_buff *skb)
1504 {
1505 struct hci_cp_le_add_to_resolv_list *sent;
1506 __u8 status = *((__u8 *) skb->data);
1507
1508 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1509
1510 if (status)
1511 return;
1512
1513 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
1514 if (!sent)
1515 return;
1516
1517 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
1518 sent->bdaddr_type, sent->peer_irk,
1519 sent->local_irk);
1520 }
1521
1522 static void hci_cc_le_del_from_resolv_list(struct hci_dev *hdev,
1523 struct sk_buff *skb)
1524 {
1525 struct hci_cp_le_del_from_resolv_list *sent;
1526 __u8 status = *((__u8 *) skb->data);
1527
1528 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1529
1530 if (status)
1531 return;
1532
1533 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
1534 if (!sent)
1535 return;
1536
1537 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
1538 sent->bdaddr_type);
1539 }
1540
1541 static void hci_cc_le_clear_resolv_list(struct hci_dev *hdev,
1542 struct sk_buff *skb)
1543 {
1544 __u8 status = *((__u8 *) skb->data);
1545
1546 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1547
1548 if (status)
1549 return;
1550
1551 hci_bdaddr_list_clear(&hdev->le_resolv_list);
1552 }
1553
1554 static void hci_cc_le_read_resolv_list_size(struct hci_dev *hdev,
1555 struct sk_buff *skb)
1556 {
1557 struct hci_rp_le_read_resolv_list_size *rp = (void *) skb->data;
1558
1559 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1560
1561 if (rp->status)
1562 return;
1563
1564 hdev->le_resolv_list_size = rp->size;
1565 }
1566
1567 static void hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev,
1568 struct sk_buff *skb)
1569 {
1570 __u8 *sent, status = *((__u8 *) skb->data);
1571
1572 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1573
1574 if (status)
1575 return;
1576
1577 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
1578 if (!sent)
1579 return;
1580
1581 hci_dev_lock(hdev);
1582
1583 if (*sent)
1584 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
1585 else
1586 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
1587
1588 hci_dev_unlock(hdev);
1589 }
1590
1591 static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1592 struct sk_buff *skb)
1593 {
1594 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1595
1596 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1597
1598 if (rp->status)
1599 return;
1600
1601 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1602 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1603 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1604 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1605 }
1606
1607 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1608 struct sk_buff *skb)
1609 {
1610 struct hci_cp_write_le_host_supported *sent;
1611 __u8 status = *((__u8 *) skb->data);
1612
1613 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1614
1615 if (status)
1616 return;
1617
1618 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1619 if (!sent)
1620 return;
1621
1622 hci_dev_lock(hdev);
1623
1624 if (sent->le) {
1625 hdev->features[1][0] |= LMP_HOST_LE;
1626 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1627 } else {
1628 hdev->features[1][0] &= ~LMP_HOST_LE;
1629 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
1630 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1631 }
1632
1633 if (sent->simul)
1634 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1635 else
1636 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1637
1638 hci_dev_unlock(hdev);
1639 }
1640
1641 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1642 {
1643 struct hci_cp_le_set_adv_param *cp;
1644 u8 status = *((u8 *) skb->data);
1645
1646 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1647
1648 if (status)
1649 return;
1650
1651 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1652 if (!cp)
1653 return;
1654
1655 hci_dev_lock(hdev);
1656 hdev->adv_addr_type = cp->own_address_type;
1657 hci_dev_unlock(hdev);
1658 }
1659
1660 static void hci_cc_set_ext_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1661 {
1662 struct hci_rp_le_set_ext_adv_params *rp = (void *) skb->data;
1663 struct hci_cp_le_set_ext_adv_params *cp;
1664 struct adv_info *adv_instance;
1665
1666 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1667
1668 if (rp->status)
1669 return;
1670
1671 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
1672 if (!cp)
1673 return;
1674
1675 hci_dev_lock(hdev);
1676 hdev->adv_addr_type = cp->own_addr_type;
1677 if (!hdev->cur_adv_instance) {
1678 /* Store in hdev for instance 0 */
1679 hdev->adv_tx_power = rp->tx_power;
1680 } else {
1681 adv_instance = hci_find_adv_instance(hdev,
1682 hdev->cur_adv_instance);
1683 if (adv_instance)
1684 adv_instance->tx_power = rp->tx_power;
1685 }
1686 /* Update adv data as tx power is known now */
1687 hci_req_update_adv_data(hdev, hdev->cur_adv_instance);
1688 hci_dev_unlock(hdev);
1689 }
1690
1691 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1692 {
1693 struct hci_rp_read_rssi *rp = (void *) skb->data;
1694 struct hci_conn *conn;
1695
1696 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1697
1698 if (rp->status)
1699 return;
1700
1701 hci_dev_lock(hdev);
1702
1703 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1704 if (conn)
1705 conn->rssi = rp->rssi;
1706
1707 hci_dev_unlock(hdev);
1708 }
1709
1710 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1711 {
1712 struct hci_cp_read_tx_power *sent;
1713 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1714 struct hci_conn *conn;
1715
1716 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1717
1718 if (rp->status)
1719 return;
1720
1721 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1722 if (!sent)
1723 return;
1724
1725 hci_dev_lock(hdev);
1726
1727 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1728 if (!conn)
1729 goto unlock;
1730
1731 switch (sent->type) {
1732 case 0x00:
1733 conn->tx_power = rp->tx_power;
1734 break;
1735 case 0x01:
1736 conn->max_tx_power = rp->tx_power;
1737 break;
1738 }
1739
1740 unlock:
1741 hci_dev_unlock(hdev);
1742 }
1743
1744 static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
1745 {
1746 u8 status = *((u8 *) skb->data);
1747 u8 *mode;
1748
1749 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1750
1751 if (status)
1752 return;
1753
1754 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
1755 if (mode)
1756 hdev->ssp_debug_mode = *mode;
1757 }
1758
1759 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1760 {
1761 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1762
1763 if (status) {
1764 hci_conn_check_pending(hdev);
1765 return;
1766 }
1767
1768 set_bit(HCI_INQUIRY, &hdev->flags);
1769 }
1770
1771 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1772 {
1773 struct hci_cp_create_conn *cp;
1774 struct hci_conn *conn;
1775
1776 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1777
1778 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1779 if (!cp)
1780 return;
1781
1782 hci_dev_lock(hdev);
1783
1784 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1785
1786 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1787
1788 if (status) {
1789 if (conn && conn->state == BT_CONNECT) {
1790 if (status != 0x0c || conn->attempt > 2) {
1791 conn->state = BT_CLOSED;
1792 hci_connect_cfm(conn, status);
1793 hci_conn_del(conn);
1794 } else
1795 conn->state = BT_CONNECT2;
1796 }
1797 } else {
1798 if (!conn) {
1799 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1800 HCI_ROLE_MASTER);
1801 if (!conn)
1802 bt_dev_err(hdev, "no memory for new connection");
1803 }
1804 }
1805
1806 hci_dev_unlock(hdev);
1807 }
1808
1809 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1810 {
1811 struct hci_cp_add_sco *cp;
1812 struct hci_conn *acl, *sco;
1813 __u16 handle;
1814
1815 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1816
1817 if (!status)
1818 return;
1819
1820 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1821 if (!cp)
1822 return;
1823
1824 handle = __le16_to_cpu(cp->handle);
1825
1826 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1827
1828 hci_dev_lock(hdev);
1829
1830 acl = hci_conn_hash_lookup_handle(hdev, handle);
1831 if (acl) {
1832 sco = acl->link;
1833 if (sco) {
1834 sco->state = BT_CLOSED;
1835
1836 hci_connect_cfm(sco, status);
1837 hci_conn_del(sco);
1838 }
1839 }
1840
1841 hci_dev_unlock(hdev);
1842 }
1843
1844 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1845 {
1846 struct hci_cp_auth_requested *cp;
1847 struct hci_conn *conn;
1848
1849 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1850
1851 if (!status)
1852 return;
1853
1854 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1855 if (!cp)
1856 return;
1857
1858 hci_dev_lock(hdev);
1859
1860 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1861 if (conn) {
1862 if (conn->state == BT_CONFIG) {
1863 hci_connect_cfm(conn, status);
1864 hci_conn_drop(conn);
1865 }
1866 }
1867
1868 hci_dev_unlock(hdev);
1869 }
1870
1871 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1872 {
1873 struct hci_cp_set_conn_encrypt *cp;
1874 struct hci_conn *conn;
1875
1876 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1877
1878 if (!status)
1879 return;
1880
1881 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1882 if (!cp)
1883 return;
1884
1885 hci_dev_lock(hdev);
1886
1887 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1888 if (conn) {
1889 if (conn->state == BT_CONFIG) {
1890 hci_connect_cfm(conn, status);
1891 hci_conn_drop(conn);
1892 }
1893 }
1894
1895 hci_dev_unlock(hdev);
1896 }
1897
1898 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1899 struct hci_conn *conn)
1900 {
1901 if (conn->state != BT_CONFIG || !conn->out)
1902 return 0;
1903
1904 if (conn->pending_sec_level == BT_SECURITY_SDP)
1905 return 0;
1906
1907 /* Only request authentication for SSP connections or non-SSP
1908 * devices with sec_level MEDIUM or HIGH or if MITM protection
1909 * is requested.
1910 */
1911 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1912 conn->pending_sec_level != BT_SECURITY_FIPS &&
1913 conn->pending_sec_level != BT_SECURITY_HIGH &&
1914 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1915 return 0;
1916
1917 return 1;
1918 }
1919
1920 static int hci_resolve_name(struct hci_dev *hdev,
1921 struct inquiry_entry *e)
1922 {
1923 struct hci_cp_remote_name_req cp;
1924
1925 memset(&cp, 0, sizeof(cp));
1926
1927 bacpy(&cp.bdaddr, &e->data.bdaddr);
1928 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1929 cp.pscan_mode = e->data.pscan_mode;
1930 cp.clock_offset = e->data.clock_offset;
1931
1932 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1933 }
1934
1935 static bool hci_resolve_next_name(struct hci_dev *hdev)
1936 {
1937 struct discovery_state *discov = &hdev->discovery;
1938 struct inquiry_entry *e;
1939
1940 if (list_empty(&discov->resolve))
1941 return false;
1942
1943 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1944 if (!e)
1945 return false;
1946
1947 if (hci_resolve_name(hdev, e) == 0) {
1948 e->name_state = NAME_PENDING;
1949 return true;
1950 }
1951
1952 return false;
1953 }
1954
1955 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1956 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1957 {
1958 struct discovery_state *discov = &hdev->discovery;
1959 struct inquiry_entry *e;
1960
1961 /* Update the mgmt connected state if necessary. Be careful with
1962 * conn objects that exist but are not (yet) connected however.
1963 * Only those in BT_CONFIG or BT_CONNECTED states can be
1964 * considered connected.
1965 */
1966 if (conn &&
1967 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1968 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1969 mgmt_device_connected(hdev, conn, 0, name, name_len);
1970
1971 if (discov->state == DISCOVERY_STOPPED)
1972 return;
1973
1974 if (discov->state == DISCOVERY_STOPPING)
1975 goto discov_complete;
1976
1977 if (discov->state != DISCOVERY_RESOLVING)
1978 return;
1979
1980 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1981 /* If the device was not found in a list of found devices names of which
1982 * are pending. there is no need to continue resolving a next name as it
1983 * will be done upon receiving another Remote Name Request Complete
1984 * Event */
1985 if (!e)
1986 return;
1987
1988 list_del(&e->list);
1989 if (name) {
1990 e->name_state = NAME_KNOWN;
1991 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1992 e->data.rssi, name, name_len);
1993 } else {
1994 e->name_state = NAME_NOT_KNOWN;
1995 }
1996
1997 if (hci_resolve_next_name(hdev))
1998 return;
1999
2000 discov_complete:
2001 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2002 }
2003
2004 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2005 {
2006 struct hci_cp_remote_name_req *cp;
2007 struct hci_conn *conn;
2008
2009 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2010
2011 /* If successful wait for the name req complete event before
2012 * checking for the need to do authentication */
2013 if (!status)
2014 return;
2015
2016 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2017 if (!cp)
2018 return;
2019
2020 hci_dev_lock(hdev);
2021
2022 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2023
2024 if (hci_dev_test_flag(hdev, HCI_MGMT))
2025 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2026
2027 if (!conn)
2028 goto unlock;
2029
2030 if (!hci_outgoing_auth_needed(hdev, conn))
2031 goto unlock;
2032
2033 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2034 struct hci_cp_auth_requested auth_cp;
2035
2036 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2037
2038 auth_cp.handle = __cpu_to_le16(conn->handle);
2039 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2040 sizeof(auth_cp), &auth_cp);
2041 }
2042
2043 unlock:
2044 hci_dev_unlock(hdev);
2045 }
2046
2047 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2048 {
2049 struct hci_cp_read_remote_features *cp;
2050 struct hci_conn *conn;
2051
2052 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2053
2054 if (!status)
2055 return;
2056
2057 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2058 if (!cp)
2059 return;
2060
2061 hci_dev_lock(hdev);
2062
2063 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2064 if (conn) {
2065 if (conn->state == BT_CONFIG) {
2066 hci_connect_cfm(conn, status);
2067 hci_conn_drop(conn);
2068 }
2069 }
2070
2071 hci_dev_unlock(hdev);
2072 }
2073
2074 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2075 {
2076 struct hci_cp_read_remote_ext_features *cp;
2077 struct hci_conn *conn;
2078
2079 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2080
2081 if (!status)
2082 return;
2083
2084 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2085 if (!cp)
2086 return;
2087
2088 hci_dev_lock(hdev);
2089
2090 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2091 if (conn) {
2092 if (conn->state == BT_CONFIG) {
2093 hci_connect_cfm(conn, status);
2094 hci_conn_drop(conn);
2095 }
2096 }
2097
2098 hci_dev_unlock(hdev);
2099 }
2100
2101 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2102 {
2103 struct hci_cp_setup_sync_conn *cp;
2104 struct hci_conn *acl, *sco;
2105 __u16 handle;
2106
2107 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2108
2109 if (!status)
2110 return;
2111
2112 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2113 if (!cp)
2114 return;
2115
2116 handle = __le16_to_cpu(cp->handle);
2117
2118 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
2119
2120 hci_dev_lock(hdev);
2121
2122 acl = hci_conn_hash_lookup_handle(hdev, handle);
2123 if (acl) {
2124 sco = acl->link;
2125 if (sco) {
2126 sco->state = BT_CLOSED;
2127
2128 hci_connect_cfm(sco, status);
2129 hci_conn_del(sco);
2130 }
2131 }
2132
2133 hci_dev_unlock(hdev);
2134 }
2135
2136 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2137 {
2138 struct hci_cp_sniff_mode *cp;
2139 struct hci_conn *conn;
2140
2141 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2142
2143 if (!status)
2144 return;
2145
2146 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2147 if (!cp)
2148 return;
2149
2150 hci_dev_lock(hdev);
2151
2152 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2153 if (conn) {
2154 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2155
2156 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2157 hci_sco_setup(conn, status);
2158 }
2159
2160 hci_dev_unlock(hdev);
2161 }
2162
2163 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2164 {
2165 struct hci_cp_exit_sniff_mode *cp;
2166 struct hci_conn *conn;
2167
2168 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2169
2170 if (!status)
2171 return;
2172
2173 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2174 if (!cp)
2175 return;
2176
2177 hci_dev_lock(hdev);
2178
2179 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2180 if (conn) {
2181 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2182
2183 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2184 hci_sco_setup(conn, status);
2185 }
2186
2187 hci_dev_unlock(hdev);
2188 }
2189
2190 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2191 {
2192 struct hci_cp_disconnect *cp;
2193 struct hci_conn *conn;
2194
2195 if (!status)
2196 return;
2197
2198 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2199 if (!cp)
2200 return;
2201
2202 hci_dev_lock(hdev);
2203
2204 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2205 if (conn)
2206 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2207 conn->dst_type, status);
2208
2209 hci_dev_unlock(hdev);
2210 }
2211
2212 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2213 u8 peer_addr_type, u8 own_address_type,
2214 u8 filter_policy)
2215 {
2216 struct hci_conn *conn;
2217
2218 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2219 peer_addr_type);
2220 if (!conn)
2221 return;
2222
2223 /* Store the initiator and responder address information which
2224 * is needed for SMP. These values will not change during the
2225 * lifetime of the connection.
2226 */
2227 conn->init_addr_type = own_address_type;
2228 if (own_address_type == ADDR_LE_DEV_RANDOM)
2229 bacpy(&conn->init_addr, &hdev->random_addr);
2230 else
2231 bacpy(&conn->init_addr, &hdev->bdaddr);
2232
2233 conn->resp_addr_type = peer_addr_type;
2234 bacpy(&conn->resp_addr, peer_addr);
2235
2236 /* We don't want the connection attempt to stick around
2237 * indefinitely since LE doesn't have a page timeout concept
2238 * like BR/EDR. Set a timer for any connection that doesn't use
2239 * the white list for connecting.
2240 */
2241 if (filter_policy == HCI_LE_USE_PEER_ADDR)
2242 queue_delayed_work(conn->hdev->workqueue,
2243 &conn->le_conn_timeout,
2244 conn->conn_timeout);
2245 }
2246
2247 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2248 {
2249 struct hci_cp_le_create_conn *cp;
2250
2251 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2252
2253 /* All connection failure handling is taken care of by the
2254 * hci_le_conn_failed function which is triggered by the HCI
2255 * request completion callbacks used for connecting.
2256 */
2257 if (status)
2258 return;
2259
2260 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2261 if (!cp)
2262 return;
2263
2264 hci_dev_lock(hdev);
2265
2266 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2267 cp->own_address_type, cp->filter_policy);
2268
2269 hci_dev_unlock(hdev);
2270 }
2271
2272 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2273 {
2274 struct hci_cp_le_ext_create_conn *cp;
2275
2276 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2277
2278 /* All connection failure handling is taken care of by the
2279 * hci_le_conn_failed function which is triggered by the HCI
2280 * request completion callbacks used for connecting.
2281 */
2282 if (status)
2283 return;
2284
2285 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2286 if (!cp)
2287 return;
2288
2289 hci_dev_lock(hdev);
2290
2291 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2292 cp->own_addr_type, cp->filter_policy);
2293
2294 hci_dev_unlock(hdev);
2295 }
2296
2297 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2298 {
2299 struct hci_cp_le_read_remote_features *cp;
2300 struct hci_conn *conn;
2301
2302 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2303
2304 if (!status)
2305 return;
2306
2307 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2308 if (!cp)
2309 return;
2310
2311 hci_dev_lock(hdev);
2312
2313 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2314 if (conn) {
2315 if (conn->state == BT_CONFIG) {
2316 hci_connect_cfm(conn, status);
2317 hci_conn_drop(conn);
2318 }
2319 }
2320
2321 hci_dev_unlock(hdev);
2322 }
2323
2324 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2325 {
2326 struct hci_cp_le_start_enc *cp;
2327 struct hci_conn *conn;
2328
2329 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2330
2331 if (!status)
2332 return;
2333
2334 hci_dev_lock(hdev);
2335
2336 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2337 if (!cp)
2338 goto unlock;
2339
2340 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2341 if (!conn)
2342 goto unlock;
2343
2344 if (conn->state != BT_CONNECTED)
2345 goto unlock;
2346
2347 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2348 hci_conn_drop(conn);
2349
2350 unlock:
2351 hci_dev_unlock(hdev);
2352 }
2353
2354 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2355 {
2356 struct hci_cp_switch_role *cp;
2357 struct hci_conn *conn;
2358
2359 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2360
2361 if (!status)
2362 return;
2363
2364 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2365 if (!cp)
2366 return;
2367
2368 hci_dev_lock(hdev);
2369
2370 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2371 if (conn)
2372 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2373
2374 hci_dev_unlock(hdev);
2375 }
2376
2377 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2378 {
2379 __u8 status = *((__u8 *) skb->data);
2380 struct discovery_state *discov = &hdev->discovery;
2381 struct inquiry_entry *e;
2382
2383 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2384
2385 hci_conn_check_pending(hdev);
2386
2387 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2388 return;
2389
2390 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2391 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2392
2393 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2394 return;
2395
2396 hci_dev_lock(hdev);
2397
2398 if (discov->state != DISCOVERY_FINDING)
2399 goto unlock;
2400
2401 if (list_empty(&discov->resolve)) {
2402 /* When BR/EDR inquiry is active and no LE scanning is in
2403 * progress, then change discovery state to indicate completion.
2404 *
2405 * When running LE scanning and BR/EDR inquiry simultaneously
2406 * and the LE scan already finished, then change the discovery
2407 * state to indicate completion.
2408 */
2409 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2410 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2411 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2412 goto unlock;
2413 }
2414
2415 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2416 if (e && hci_resolve_name(hdev, e) == 0) {
2417 e->name_state = NAME_PENDING;
2418 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2419 } else {
2420 /* When BR/EDR inquiry is active and no LE scanning is in
2421 * progress, then change discovery state to indicate completion.
2422 *
2423 * When running LE scanning and BR/EDR inquiry simultaneously
2424 * and the LE scan already finished, then change the discovery
2425 * state to indicate completion.
2426 */
2427 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2428 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
2429 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2430 }
2431
2432 unlock:
2433 hci_dev_unlock(hdev);
2434 }
2435
2436 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2437 {
2438 struct inquiry_data data;
2439 struct inquiry_info *info = (void *) (skb->data + 1);
2440 int num_rsp = *((__u8 *) skb->data);
2441
2442 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2443
2444 if (!num_rsp)
2445 return;
2446
2447 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2448 return;
2449
2450 hci_dev_lock(hdev);
2451
2452 for (; num_rsp; num_rsp--, info++) {
2453 u32 flags;
2454
2455 bacpy(&data.bdaddr, &info->bdaddr);
2456 data.pscan_rep_mode = info->pscan_rep_mode;
2457 data.pscan_period_mode = info->pscan_period_mode;
2458 data.pscan_mode = info->pscan_mode;
2459 memcpy(data.dev_class, info->dev_class, 3);
2460 data.clock_offset = info->clock_offset;
2461 data.rssi = HCI_RSSI_INVALID;
2462 data.ssp_mode = 0x00;
2463
2464 flags = hci_inquiry_cache_update(hdev, &data, false);
2465
2466 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2467 info->dev_class, HCI_RSSI_INVALID,
2468 flags, NULL, 0, NULL, 0);
2469 }
2470
2471 hci_dev_unlock(hdev);
2472 }
2473
2474 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2475 {
2476 struct hci_ev_conn_complete *ev = (void *) skb->data;
2477 struct hci_conn *conn;
2478
2479 BT_DBG("%s", hdev->name);
2480
2481 hci_dev_lock(hdev);
2482
2483 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2484 if (!conn) {
2485 if (ev->link_type != SCO_LINK)
2486 goto unlock;
2487
2488 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2489 if (!conn)
2490 goto unlock;
2491
2492 conn->type = SCO_LINK;
2493 }
2494
2495 if (!ev->status) {
2496 conn->handle = __le16_to_cpu(ev->handle);
2497
2498 if (conn->type == ACL_LINK) {
2499 conn->state = BT_CONFIG;
2500 hci_conn_hold(conn);
2501
2502 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2503 !hci_find_link_key(hdev, &ev->bdaddr))
2504 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2505 else
2506 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2507 } else
2508 conn->state = BT_CONNECTED;
2509
2510 hci_debugfs_create_conn(conn);
2511 hci_conn_add_sysfs(conn);
2512
2513 if (test_bit(HCI_AUTH, &hdev->flags))
2514 set_bit(HCI_CONN_AUTH, &conn->flags);
2515
2516 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2517 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2518
2519 /* Get remote features */
2520 if (conn->type == ACL_LINK) {
2521 struct hci_cp_read_remote_features cp;
2522 cp.handle = ev->handle;
2523 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2524 sizeof(cp), &cp);
2525
2526 hci_req_update_scan(hdev);
2527 }
2528
2529 /* Set packet type for incoming connection */
2530 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2531 struct hci_cp_change_conn_ptype cp;
2532 cp.handle = ev->handle;
2533 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2534 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2535 &cp);
2536 }
2537 } else {
2538 conn->state = BT_CLOSED;
2539 if (conn->type == ACL_LINK)
2540 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2541 conn->dst_type, ev->status);
2542 }
2543
2544 if (conn->type == ACL_LINK)
2545 hci_sco_setup(conn, ev->status);
2546
2547 if (ev->status) {
2548 hci_connect_cfm(conn, ev->status);
2549 hci_conn_del(conn);
2550 } else if (ev->link_type != ACL_LINK)
2551 hci_connect_cfm(conn, ev->status);
2552
2553 unlock:
2554 hci_dev_unlock(hdev);
2555
2556 hci_conn_check_pending(hdev);
2557 }
2558
2559 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2560 {
2561 struct hci_cp_reject_conn_req cp;
2562
2563 bacpy(&cp.bdaddr, bdaddr);
2564 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2565 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2566 }
2567
2568 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2569 {
2570 struct hci_ev_conn_request *ev = (void *) skb->data;
2571 int mask = hdev->link_mode;
2572 struct inquiry_entry *ie;
2573 struct hci_conn *conn;
2574 __u8 flags = 0;
2575
2576 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2577 ev->link_type);
2578
2579 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2580 &flags);
2581
2582 if (!(mask & HCI_LM_ACCEPT)) {
2583 hci_reject_conn(hdev, &ev->bdaddr);
2584 return;
2585 }
2586
2587 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2588 BDADDR_BREDR)) {
2589 hci_reject_conn(hdev, &ev->bdaddr);
2590 return;
2591 }
2592
2593 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2594 * connection. These features are only touched through mgmt so
2595 * only do the checks if HCI_MGMT is set.
2596 */
2597 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
2598 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2599 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2600 BDADDR_BREDR)) {
2601 hci_reject_conn(hdev, &ev->bdaddr);
2602 return;
2603 }
2604
2605 /* Connection accepted */
2606
2607 hci_dev_lock(hdev);
2608
2609 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2610 if (ie)
2611 memcpy(ie->data.dev_class, ev->dev_class, 3);
2612
2613 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2614 &ev->bdaddr);
2615 if (!conn) {
2616 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2617 HCI_ROLE_SLAVE);
2618 if (!conn) {
2619 bt_dev_err(hdev, "no memory for new connection");
2620 hci_dev_unlock(hdev);
2621 return;
2622 }
2623 }
2624
2625 memcpy(conn->dev_class, ev->dev_class, 3);
2626
2627 hci_dev_unlock(hdev);
2628
2629 if (ev->link_type == ACL_LINK ||
2630 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2631 struct hci_cp_accept_conn_req cp;
2632 conn->state = BT_CONNECT;
2633
2634 bacpy(&cp.bdaddr, &ev->bdaddr);
2635
2636 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2637 cp.role = 0x00; /* Become master */
2638 else
2639 cp.role = 0x01; /* Remain slave */
2640
2641 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2642 } else if (!(flags & HCI_PROTO_DEFER)) {
2643 struct hci_cp_accept_sync_conn_req cp;
2644 conn->state = BT_CONNECT;
2645
2646 bacpy(&cp.bdaddr, &ev->bdaddr);
2647 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2648
2649 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2650 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2651 cp.max_latency = cpu_to_le16(0xffff);
2652 cp.content_format = cpu_to_le16(hdev->voice_setting);
2653 cp.retrans_effort = 0xff;
2654
2655 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2656 &cp);
2657 } else {
2658 conn->state = BT_CONNECT2;
2659 hci_connect_cfm(conn, 0);
2660 }
2661 }
2662
2663 static u8 hci_to_mgmt_reason(u8 err)
2664 {
2665 switch (err) {
2666 case HCI_ERROR_CONNECTION_TIMEOUT:
2667 return MGMT_DEV_DISCONN_TIMEOUT;
2668 case HCI_ERROR_REMOTE_USER_TERM:
2669 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2670 case HCI_ERROR_REMOTE_POWER_OFF:
2671 return MGMT_DEV_DISCONN_REMOTE;
2672 case HCI_ERROR_LOCAL_HOST_TERM:
2673 return MGMT_DEV_DISCONN_LOCAL_HOST;
2674 default:
2675 return MGMT_DEV_DISCONN_UNKNOWN;
2676 }
2677 }
2678
2679 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2680 {
2681 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2682 u8 reason;
2683 struct hci_conn_params *params;
2684 struct hci_conn *conn;
2685 bool mgmt_connected;
2686 u8 type;
2687
2688 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2689
2690 hci_dev_lock(hdev);
2691
2692 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2693 if (!conn)
2694 goto unlock;
2695
2696 if (ev->status) {
2697 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2698 conn->dst_type, ev->status);
2699 goto unlock;
2700 }
2701
2702 conn->state = BT_CLOSED;
2703
2704 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2705
2706 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
2707 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
2708 else
2709 reason = hci_to_mgmt_reason(ev->reason);
2710
2711 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2712 reason, mgmt_connected);
2713
2714 if (conn->type == ACL_LINK) {
2715 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2716 hci_remove_link_key(hdev, &conn->dst);
2717
2718 hci_req_update_scan(hdev);
2719 }
2720
2721 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2722 if (params) {
2723 switch (params->auto_connect) {
2724 case HCI_AUTO_CONN_LINK_LOSS:
2725 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2726 break;
2727 /* Fall through */
2728
2729 case HCI_AUTO_CONN_DIRECT:
2730 case HCI_AUTO_CONN_ALWAYS:
2731 list_del_init(&params->action);
2732 list_add(&params->action, &hdev->pend_le_conns);
2733 hci_update_background_scan(hdev);
2734 break;
2735
2736 default:
2737 break;
2738 }
2739 }
2740
2741 type = conn->type;
2742
2743 hci_disconn_cfm(conn, ev->reason);
2744 hci_conn_del(conn);
2745
2746 /* Re-enable advertising if necessary, since it might
2747 * have been disabled by the connection. From the
2748 * HCI_LE_Set_Advertise_Enable command description in
2749 * the core specification (v4.0):
2750 * "The Controller shall continue advertising until the Host
2751 * issues an LE_Set_Advertise_Enable command with
2752 * Advertising_Enable set to 0x00 (Advertising is disabled)
2753 * or until a connection is created or until the Advertising
2754 * is timed out due to Directed Advertising."
2755 */
2756 if (type == LE_LINK)
2757 hci_req_reenable_advertising(hdev);
2758
2759 unlock:
2760 hci_dev_unlock(hdev);
2761 }
2762
2763 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2764 {
2765 struct hci_ev_auth_complete *ev = (void *) skb->data;
2766 struct hci_conn *conn;
2767
2768 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2769
2770 hci_dev_lock(hdev);
2771
2772 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2773 if (!conn)
2774 goto unlock;
2775
2776 if (!ev->status) {
2777 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2778
2779 if (!hci_conn_ssp_enabled(conn) &&
2780 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2781 bt_dev_info(hdev, "re-auth of legacy device is not possible.");
2782 } else {
2783 set_bit(HCI_CONN_AUTH, &conn->flags);
2784 conn->sec_level = conn->pending_sec_level;
2785 }
2786 } else {
2787 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2788 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2789
2790 mgmt_auth_failed(conn, ev->status);
2791 }
2792
2793 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2794 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2795
2796 if (conn->state == BT_CONFIG) {
2797 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2798 struct hci_cp_set_conn_encrypt cp;
2799 cp.handle = ev->handle;
2800 cp.encrypt = 0x01;
2801 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2802 &cp);
2803 } else {
2804 conn->state = BT_CONNECTED;
2805 hci_connect_cfm(conn, ev->status);
2806 hci_conn_drop(conn);
2807 }
2808 } else {
2809 hci_auth_cfm(conn, ev->status);
2810
2811 hci_conn_hold(conn);
2812 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2813 hci_conn_drop(conn);
2814 }
2815
2816 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2817 if (!ev->status) {
2818 struct hci_cp_set_conn_encrypt cp;
2819 cp.handle = ev->handle;
2820 cp.encrypt = 0x01;
2821 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2822 &cp);
2823 } else {
2824 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2825 hci_encrypt_cfm(conn, ev->status, 0x00);
2826 }
2827 }
2828
2829 unlock:
2830 hci_dev_unlock(hdev);
2831 }
2832
2833 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2834 {
2835 struct hci_ev_remote_name *ev = (void *) skb->data;
2836 struct hci_conn *conn;
2837
2838 BT_DBG("%s", hdev->name);
2839
2840 hci_conn_check_pending(hdev);
2841
2842 hci_dev_lock(hdev);
2843
2844 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2845
2846 if (!hci_dev_test_flag(hdev, HCI_MGMT))
2847 goto check_auth;
2848
2849 if (ev->status == 0)
2850 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2851 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2852 else
2853 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2854
2855 check_auth:
2856 if (!conn)
2857 goto unlock;
2858
2859 if (!hci_outgoing_auth_needed(hdev, conn))
2860 goto unlock;
2861
2862 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2863 struct hci_cp_auth_requested cp;
2864
2865 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2866
2867 cp.handle = __cpu_to_le16(conn->handle);
2868 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2869 }
2870
2871 unlock:
2872 hci_dev_unlock(hdev);
2873 }
2874
2875 static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
2876 u16 opcode, struct sk_buff *skb)
2877 {
2878 const struct hci_rp_read_enc_key_size *rp;
2879 struct hci_conn *conn;
2880 u16 handle;
2881
2882 BT_DBG("%s status 0x%02x", hdev->name, status);
2883
2884 if (!skb || skb->len < sizeof(*rp)) {
2885 bt_dev_err(hdev, "invalid read key size response");
2886 return;
2887 }
2888
2889 rp = (void *)skb->data;
2890 handle = le16_to_cpu(rp->handle);
2891
2892 hci_dev_lock(hdev);
2893
2894 conn = hci_conn_hash_lookup_handle(hdev, handle);
2895 if (!conn)
2896 goto unlock;
2897
2898 /* If we fail to read the encryption key size, assume maximum
2899 * (which is the same we do also when this HCI command isn't
2900 * supported.
2901 */
2902 if (rp->status) {
2903 bt_dev_err(hdev, "failed to read key size for handle %u",
2904 handle);
2905 conn->enc_key_size = HCI_LINK_KEY_SIZE;
2906 } else {
2907 conn->enc_key_size = rp->key_size;
2908 }
2909
2910 if (conn->state == BT_CONFIG) {
2911 conn->state = BT_CONNECTED;
2912 hci_connect_cfm(conn, 0);
2913 hci_conn_drop(conn);
2914 } else {
2915 u8 encrypt;
2916
2917 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2918 encrypt = 0x00;
2919 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2920 encrypt = 0x02;
2921 else
2922 encrypt = 0x01;
2923
2924 hci_encrypt_cfm(conn, 0, encrypt);
2925 }
2926
2927 unlock:
2928 hci_dev_unlock(hdev);
2929 }
2930
2931 static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2932 {
2933 struct hci_ev_encrypt_change *ev = (void *) skb->data;
2934 struct hci_conn *conn;
2935
2936 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2937
2938 hci_dev_lock(hdev);
2939
2940 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2941 if (!conn)
2942 goto unlock;
2943
2944 if (!ev->status) {
2945 if (ev->encrypt) {
2946 /* Encryption implies authentication */
2947 set_bit(HCI_CONN_AUTH, &conn->flags);
2948 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2949 conn->sec_level = conn->pending_sec_level;
2950
2951 /* P-256 authentication key implies FIPS */
2952 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2953 set_bit(HCI_CONN_FIPS, &conn->flags);
2954
2955 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
2956 conn->type == LE_LINK)
2957 set_bit(HCI_CONN_AES_CCM, &conn->flags);
2958 } else {
2959 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2960 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
2961 }
2962 }
2963
2964 /* We should disregard the current RPA and generate a new one
2965 * whenever the encryption procedure fails.
2966 */
2967 if (ev->status && conn->type == LE_LINK) {
2968 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
2969 hci_adv_instances_set_rpa_expired(hdev, true);
2970 }
2971
2972 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2973
2974 if (ev->status && conn->state == BT_CONNECTED) {
2975 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
2976 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
2977
2978 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2979 hci_conn_drop(conn);
2980 goto unlock;
2981 }
2982
2983 /* In Secure Connections Only mode, do not allow any connections
2984 * that are not encrypted with AES-CCM using a P-256 authenticated
2985 * combination key.
2986 */
2987 if (hci_dev_test_flag(hdev, HCI_SC_ONLY) &&
2988 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
2989 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
2990 hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
2991 hci_conn_drop(conn);
2992 goto unlock;
2993 }
2994
2995 /* Try reading the encryption key size for encrypted ACL links */
2996 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
2997 struct hci_cp_read_enc_key_size cp;
2998 struct hci_request req;
2999
3000 /* Only send HCI_Read_Encryption_Key_Size if the
3001 * controller really supports it. If it doesn't, assume
3002 * the default size (16).
3003 */
3004 if (!(hdev->commands[20] & 0x10)) {
3005 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3006 goto notify;
3007 }
3008
3009 hci_req_init(&req, hdev);
3010
3011 cp.handle = cpu_to_le16(conn->handle);
3012 hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp);
3013
3014 if (hci_req_run_skb(&req, read_enc_key_size_complete)) {
3015 bt_dev_err(hdev, "sending read key size failed");
3016 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3017 goto notify;
3018 }
3019
3020 goto unlock;
3021 }
3022
3023 /* Set the default Authenticated Payload Timeout after
3024 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3025 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3026 * sent when the link is active and Encryption is enabled, the conn
3027 * type can be either LE or ACL and controller must support LMP Ping.
3028 * Ensure for AES-CCM encryption as well.
3029 */
3030 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3031 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3032 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3033 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3034 struct hci_cp_write_auth_payload_to cp;
3035
3036 cp.handle = cpu_to_le16(conn->handle);
3037 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3038 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3039 sizeof(cp), &cp);
3040 }
3041
3042 notify:
3043 if (conn->state == BT_CONFIG) {
3044 if (!ev->status)
3045 conn->state = BT_CONNECTED;
3046
3047 hci_connect_cfm(conn, ev->status);
3048 hci_conn_drop(conn);
3049 } else
3050 hci_encrypt_cfm(conn, ev->status, ev->encrypt);
3051
3052 unlock:
3053 hci_dev_unlock(hdev);
3054 }
3055
3056 static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
3057 struct sk_buff *skb)
3058 {
3059 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
3060 struct hci_conn *conn;
3061
3062 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3063
3064 hci_dev_lock(hdev);
3065
3066 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3067 if (conn) {
3068 if (!ev->status)
3069 set_bit(HCI_CONN_SECURE, &conn->flags);
3070
3071 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3072
3073 hci_key_change_cfm(conn, ev->status);
3074 }
3075
3076 hci_dev_unlock(hdev);
3077 }
3078
3079 static void hci_remote_features_evt(struct hci_dev *hdev,
3080 struct sk_buff *skb)
3081 {
3082 struct hci_ev_remote_features *ev = (void *) skb->data;
3083 struct hci_conn *conn;
3084
3085 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3086
3087 hci_dev_lock(hdev);
3088
3089 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3090 if (!conn)
3091 goto unlock;
3092
3093 if (!ev->status)
3094 memcpy(conn->features[0], ev->features, 8);
3095
3096 if (conn->state != BT_CONFIG)
3097 goto unlock;
3098
3099 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3100 lmp_ext_feat_capable(conn)) {
3101 struct hci_cp_read_remote_ext_features cp;
3102 cp.handle = ev->handle;
3103 cp.page = 0x01;
3104 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3105 sizeof(cp), &cp);
3106 goto unlock;
3107 }
3108
3109 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3110 struct hci_cp_remote_name_req cp;
3111 memset(&cp, 0, sizeof(cp));
3112 bacpy(&cp.bdaddr, &conn->dst);
3113 cp.pscan_rep_mode = 0x02;
3114 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3115 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3116 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3117
3118 if (!hci_outgoing_auth_needed(hdev, conn)) {
3119 conn->state = BT_CONNECTED;
3120 hci_connect_cfm(conn, ev->status);
3121 hci_conn_drop(conn);
3122 }
3123
3124 unlock:
3125 hci_dev_unlock(hdev);
3126 }
3127
3128 static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
3129 u16 *opcode, u8 *status,
3130 hci_req_complete_t *req_complete,
3131 hci_req_complete_skb_t *req_complete_skb)
3132 {
3133 struct hci_ev_cmd_complete *ev = (void *) skb->data;
3134
3135 *opcode = __le16_to_cpu(ev->opcode);
3136 *status = skb->data[sizeof(*ev)];
3137
3138 skb_pull(skb, sizeof(*ev));
3139
3140 switch (*opcode) {
3141 case HCI_OP_INQUIRY_CANCEL:
3142 hci_cc_inquiry_cancel(hdev, skb);
3143 break;
3144
3145 case HCI_OP_PERIODIC_INQ:
3146 hci_cc_periodic_inq(hdev, skb);
3147 break;
3148
3149 case HCI_OP_EXIT_PERIODIC_INQ:
3150 hci_cc_exit_periodic_inq(hdev, skb);
3151 break;
3152
3153 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
3154 hci_cc_remote_name_req_cancel(hdev, skb);
3155 break;
3156
3157 case HCI_OP_ROLE_DISCOVERY:
3158 hci_cc_role_discovery(hdev, skb);
3159 break;
3160
3161 case HCI_OP_READ_LINK_POLICY:
3162 hci_cc_read_link_policy(hdev, skb);
3163 break;
3164
3165 case HCI_OP_WRITE_LINK_POLICY:
3166 hci_cc_write_link_policy(hdev, skb);
3167 break;
3168
3169 case HCI_OP_READ_DEF_LINK_POLICY:
3170 hci_cc_read_def_link_policy(hdev, skb);
3171 break;
3172
3173 case HCI_OP_WRITE_DEF_LINK_POLICY:
3174 hci_cc_write_def_link_policy(hdev, skb);
3175 break;
3176
3177 case HCI_OP_RESET:
3178 hci_cc_reset(hdev, skb);
3179 break;
3180
3181 case HCI_OP_READ_STORED_LINK_KEY:
3182 hci_cc_read_stored_link_key(hdev, skb);
3183 break;
3184
3185 case HCI_OP_DELETE_STORED_LINK_KEY:
3186 hci_cc_delete_stored_link_key(hdev, skb);
3187 break;
3188
3189 case HCI_OP_WRITE_LOCAL_NAME:
3190 hci_cc_write_local_name(hdev, skb);
3191 break;
3192
3193 case HCI_OP_READ_LOCAL_NAME:
3194 hci_cc_read_local_name(hdev, skb);
3195 break;
3196
3197 case HCI_OP_WRITE_AUTH_ENABLE:
3198 hci_cc_write_auth_enable(hdev, skb);
3199 break;
3200
3201 case HCI_OP_WRITE_ENCRYPT_MODE:
3202 hci_cc_write_encrypt_mode(hdev, skb);
3203 break;
3204
3205 case HCI_OP_WRITE_SCAN_ENABLE:
3206 hci_cc_write_scan_enable(hdev, skb);
3207 break;
3208
3209 case HCI_OP_READ_CLASS_OF_DEV:
3210 hci_cc_read_class_of_dev(hdev, skb);
3211 break;
3212
3213 case HCI_OP_WRITE_CLASS_OF_DEV:
3214 hci_cc_write_class_of_dev(hdev, skb);
3215 break;
3216
3217 case HCI_OP_READ_VOICE_SETTING:
3218 hci_cc_read_voice_setting(hdev, skb);
3219 break;
3220
3221 case HCI_OP_WRITE_VOICE_SETTING:
3222 hci_cc_write_voice_setting(hdev, skb);
3223 break;
3224
3225 case HCI_OP_READ_NUM_SUPPORTED_IAC:
3226 hci_cc_read_num_supported_iac(hdev, skb);
3227 break;
3228
3229 case HCI_OP_WRITE_SSP_MODE:
3230 hci_cc_write_ssp_mode(hdev, skb);
3231 break;
3232
3233 case HCI_OP_WRITE_SC_SUPPORT:
3234 hci_cc_write_sc_support(hdev, skb);
3235 break;
3236
3237 case HCI_OP_READ_AUTH_PAYLOAD_TO:
3238 hci_cc_read_auth_payload_timeout(hdev, skb);
3239 break;
3240
3241 case HCI_OP_WRITE_AUTH_PAYLOAD_TO:
3242 hci_cc_write_auth_payload_timeout(hdev, skb);
3243 break;
3244
3245 case HCI_OP_READ_LOCAL_VERSION:
3246 hci_cc_read_local_version(hdev, skb);
3247 break;
3248
3249 case HCI_OP_READ_LOCAL_COMMANDS:
3250 hci_cc_read_local_commands(hdev, skb);
3251 break;
3252
3253 case HCI_OP_READ_LOCAL_FEATURES:
3254 hci_cc_read_local_features(hdev, skb);
3255 break;
3256
3257 case HCI_OP_READ_LOCAL_EXT_FEATURES:
3258 hci_cc_read_local_ext_features(hdev, skb);
3259 break;
3260
3261 case HCI_OP_READ_BUFFER_SIZE:
3262 hci_cc_read_buffer_size(hdev, skb);
3263 break;
3264
3265 case HCI_OP_READ_BD_ADDR:
3266 hci_cc_read_bd_addr(hdev, skb);
3267 break;
3268
3269 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
3270 hci_cc_read_page_scan_activity(hdev, skb);
3271 break;
3272
3273 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
3274 hci_cc_write_page_scan_activity(hdev, skb);
3275 break;
3276
3277 case HCI_OP_READ_PAGE_SCAN_TYPE:
3278 hci_cc_read_page_scan_type(hdev, skb);
3279 break;
3280
3281 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
3282 hci_cc_write_page_scan_type(hdev, skb);
3283 break;
3284
3285 case HCI_OP_READ_DATA_BLOCK_SIZE:
3286 hci_cc_read_data_block_size(hdev, skb);
3287 break;
3288
3289 case HCI_OP_READ_FLOW_CONTROL_MODE:
3290 hci_cc_read_flow_control_mode(hdev, skb);
3291 break;
3292
3293 case HCI_OP_READ_LOCAL_AMP_INFO:
3294 hci_cc_read_local_amp_info(hdev, skb);
3295 break;
3296
3297 case HCI_OP_READ_CLOCK:
3298 hci_cc_read_clock(hdev, skb);
3299 break;
3300
3301 case HCI_OP_READ_INQ_RSP_TX_POWER:
3302 hci_cc_read_inq_rsp_tx_power(hdev, skb);
3303 break;
3304
3305 case HCI_OP_PIN_CODE_REPLY:
3306 hci_cc_pin_code_reply(hdev, skb);
3307 break;
3308
3309 case HCI_OP_PIN_CODE_NEG_REPLY:
3310 hci_cc_pin_code_neg_reply(hdev, skb);
3311 break;
3312
3313 case HCI_OP_READ_LOCAL_OOB_DATA:
3314 hci_cc_read_local_oob_data(hdev, skb);
3315 break;
3316
3317 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
3318 hci_cc_read_local_oob_ext_data(hdev, skb);
3319 break;
3320
3321 case HCI_OP_LE_READ_BUFFER_SIZE:
3322 hci_cc_le_read_buffer_size(hdev, skb);
3323 break;
3324
3325 case HCI_OP_LE_READ_LOCAL_FEATURES:
3326 hci_cc_le_read_local_features(hdev, skb);
3327 break;
3328
3329 case HCI_OP_LE_READ_ADV_TX_POWER:
3330 hci_cc_le_read_adv_tx_power(hdev, skb);
3331 break;
3332
3333 case HCI_OP_USER_CONFIRM_REPLY:
3334 hci_cc_user_confirm_reply(hdev, skb);
3335 break;
3336
3337 case HCI_OP_USER_CONFIRM_NEG_REPLY:
3338 hci_cc_user_confirm_neg_reply(hdev, skb);
3339 break;
3340
3341 case HCI_OP_USER_PASSKEY_REPLY:
3342 hci_cc_user_passkey_reply(hdev, skb);
3343 break;
3344
3345 case HCI_OP_USER_PASSKEY_NEG_REPLY:
3346 hci_cc_user_passkey_neg_reply(hdev, skb);
3347 break;
3348
3349 case HCI_OP_LE_SET_RANDOM_ADDR:
3350 hci_cc_le_set_random_addr(hdev, skb);
3351 break;
3352
3353 case HCI_OP_LE_SET_ADV_ENABLE:
3354 hci_cc_le_set_adv_enable(hdev, skb);
3355 break;
3356
3357 case HCI_OP_LE_SET_SCAN_PARAM:
3358 hci_cc_le_set_scan_param(hdev, skb);
3359 break;
3360
3361 case HCI_OP_LE_SET_SCAN_ENABLE:
3362 hci_cc_le_set_scan_enable(hdev, skb);
3363 break;
3364
3365 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
3366 hci_cc_le_read_white_list_size(hdev, skb);
3367 break;
3368
3369 case HCI_OP_LE_CLEAR_WHITE_LIST:
3370 hci_cc_le_clear_white_list(hdev, skb);
3371 break;
3372
3373 case HCI_OP_LE_ADD_TO_WHITE_LIST:
3374 hci_cc_le_add_to_white_list(hdev, skb);
3375 break;
3376
3377 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
3378 hci_cc_le_del_from_white_list(hdev, skb);
3379 break;
3380
3381 case HCI_OP_LE_READ_SUPPORTED_STATES:
3382 hci_cc_le_read_supported_states(hdev, skb);
3383 break;
3384
3385 case HCI_OP_LE_READ_DEF_DATA_LEN:
3386 hci_cc_le_read_def_data_len(hdev, skb);
3387 break;
3388
3389 case HCI_OP_LE_WRITE_DEF_DATA_LEN:
3390 hci_cc_le_write_def_data_len(hdev, skb);
3391 break;
3392
3393 case HCI_OP_LE_ADD_TO_RESOLV_LIST:
3394 hci_cc_le_add_to_resolv_list(hdev, skb);
3395 break;
3396
3397 case HCI_OP_LE_DEL_FROM_RESOLV_LIST:
3398 hci_cc_le_del_from_resolv_list(hdev, skb);
3399 break;
3400
3401 case HCI_OP_LE_CLEAR_RESOLV_LIST:
3402 hci_cc_le_clear_resolv_list(hdev, skb);
3403 break;
3404
3405 case HCI_OP_LE_READ_RESOLV_LIST_SIZE:
3406 hci_cc_le_read_resolv_list_size(hdev, skb);
3407 break;
3408
3409 case HCI_OP_LE_SET_ADDR_RESOLV_ENABLE:
3410 hci_cc_le_set_addr_resolution_enable(hdev, skb);
3411 break;
3412
3413 case HCI_OP_LE_READ_MAX_DATA_LEN:
3414 hci_cc_le_read_max_data_len(hdev, skb);
3415 break;
3416
3417 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
3418 hci_cc_write_le_host_supported(hdev, skb);
3419 break;
3420
3421 case HCI_OP_LE_SET_ADV_PARAM:
3422 hci_cc_set_adv_param(hdev, skb);
3423 break;
3424
3425 case HCI_OP_READ_RSSI:
3426 hci_cc_read_rssi(hdev, skb);
3427 break;
3428
3429 case HCI_OP_READ_TX_POWER:
3430 hci_cc_read_tx_power(hdev, skb);
3431 break;
3432
3433 case HCI_OP_WRITE_SSP_DEBUG_MODE:
3434 hci_cc_write_ssp_debug_mode(hdev, skb);
3435 break;
3436
3437 case HCI_OP_LE_SET_EXT_SCAN_PARAMS:
3438 hci_cc_le_set_ext_scan_param(hdev, skb);
3439 break;
3440
3441 case HCI_OP_LE_SET_EXT_SCAN_ENABLE:
3442 hci_cc_le_set_ext_scan_enable(hdev, skb);
3443 break;
3444
3445 case HCI_OP_LE_SET_DEFAULT_PHY:
3446 hci_cc_le_set_default_phy(hdev, skb);
3447 break;
3448
3449 case HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS:
3450 hci_cc_le_read_num_adv_sets(hdev, skb);
3451 break;
3452
3453 case HCI_OP_LE_SET_EXT_ADV_PARAMS:
3454 hci_cc_set_ext_adv_param(hdev, skb);
3455 break;
3456
3457 case HCI_OP_LE_SET_EXT_ADV_ENABLE:
3458 hci_cc_le_set_ext_adv_enable(hdev, skb);
3459 break;
3460
3461 case HCI_OP_LE_SET_ADV_SET_RAND_ADDR:
3462 hci_cc_le_set_adv_set_random_addr(hdev, skb);
3463 break;
3464
3465 default:
3466 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3467 break;
3468 }
3469
3470 if (*opcode != HCI_OP_NOP)
3471 cancel_delayed_work(&hdev->cmd_timer);
3472
3473 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3474 atomic_set(&hdev->cmd_cnt, 1);
3475
3476 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
3477 req_complete_skb);
3478
3479 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
3480 bt_dev_err(hdev,
3481 "unexpected event for opcode 0x%4.4x", *opcode);
3482 return;
3483 }
3484
3485 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3486 queue_work(hdev->workqueue, &hdev->cmd_work);
3487 }
3488
3489 static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
3490 u16 *opcode, u8 *status,
3491 hci_req_complete_t *req_complete,
3492 hci_req_complete_skb_t *req_complete_skb)
3493 {
3494 struct hci_ev_cmd_status *ev = (void *) skb->data;
3495
3496 skb_pull(skb, sizeof(*ev));
3497
3498 *opcode = __le16_to_cpu(ev->opcode);
3499 *status = ev->status;
3500
3501 switch (*opcode) {
3502 case HCI_OP_INQUIRY:
3503 hci_cs_inquiry(hdev, ev->status);
3504 break;
3505
3506 case HCI_OP_CREATE_CONN:
3507 hci_cs_create_conn(hdev, ev->status);
3508 break;
3509
3510 case HCI_OP_DISCONNECT:
3511 hci_cs_disconnect(hdev, ev->status);
3512 break;
3513
3514 case HCI_OP_ADD_SCO:
3515 hci_cs_add_sco(hdev, ev->status);
3516 break;
3517
3518 case HCI_OP_AUTH_REQUESTED:
3519 hci_cs_auth_requested(hdev, ev->status);
3520 break;
3521
3522 case HCI_OP_SET_CONN_ENCRYPT:
3523 hci_cs_set_conn_encrypt(hdev, ev->status);
3524 break;
3525
3526 case HCI_OP_REMOTE_NAME_REQ:
3527 hci_cs_remote_name_req(hdev, ev->status);
3528 break;
3529
3530 case HCI_OP_READ_REMOTE_FEATURES:
3531 hci_cs_read_remote_features(hdev, ev->status);
3532 break;
3533
3534 case HCI_OP_READ_REMOTE_EXT_FEATURES:
3535 hci_cs_read_remote_ext_features(hdev, ev->status);
3536 break;
3537
3538 case HCI_OP_SETUP_SYNC_CONN:
3539 hci_cs_setup_sync_conn(hdev, ev->status);
3540 break;
3541
3542 case HCI_OP_SNIFF_MODE:
3543 hci_cs_sniff_mode(hdev, ev->status);
3544 break;
3545
3546 case HCI_OP_EXIT_SNIFF_MODE:
3547 hci_cs_exit_sniff_mode(hdev, ev->status);
3548 break;
3549
3550 case HCI_OP_SWITCH_ROLE:
3551 hci_cs_switch_role(hdev, ev->status);
3552 break;
3553
3554 case HCI_OP_LE_CREATE_CONN:
3555 hci_cs_le_create_conn(hdev, ev->status);
3556 break;
3557
3558 case HCI_OP_LE_READ_REMOTE_FEATURES:
3559 hci_cs_le_read_remote_features(hdev, ev->status);
3560 break;
3561
3562 case HCI_OP_LE_START_ENC:
3563 hci_cs_le_start_enc(hdev, ev->status);
3564 break;
3565
3566 case HCI_OP_LE_EXT_CREATE_CONN:
3567 hci_cs_le_ext_create_conn(hdev, ev->status);
3568 break;
3569
3570 default:
3571 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3572 break;
3573 }
3574
3575 if (*opcode != HCI_OP_NOP)
3576 cancel_delayed_work(&hdev->cmd_timer);
3577
3578 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
3579 atomic_set(&hdev->cmd_cnt, 1);
3580
3581 /* Indicate request completion if the command failed. Also, if
3582 * we're not waiting for a special event and we get a success
3583 * command status we should try to flag the request as completed
3584 * (since for this kind of commands there will not be a command
3585 * complete event).
3586 */
3587 if (ev->status ||
3588 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event))
3589 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
3590 req_complete_skb);
3591
3592 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
3593 bt_dev_err(hdev,
3594 "unexpected event for opcode 0x%4.4x", *opcode);
3595 return;
3596 }
3597
3598 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
3599 queue_work(hdev->workqueue, &hdev->cmd_work);
3600 }
3601
3602 static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
3603 {
3604 struct hci_ev_hardware_error *ev = (void *) skb->data;
3605
3606 hdev->hw_error_code = ev->code;
3607
3608 queue_work(hdev->req_workqueue, &hdev->error_reset);
3609 }
3610
3611 static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3612 {
3613 struct hci_ev_role_change *ev = (void *) skb->data;
3614 struct hci_conn *conn;
3615
3616 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3617
3618 hci_dev_lock(hdev);
3619
3620 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3621 if (conn) {
3622 if (!ev->status)
3623 conn->role = ev->role;
3624
3625 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3626
3627 hci_role_switch_cfm(conn, ev->status, ev->role);
3628 }
3629
3630 hci_dev_unlock(hdev);
3631 }
3632
3633 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3634 {
3635 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
3636 int i;
3637
3638 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
3639 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3640 return;
3641 }
3642
3643 if (skb->len < sizeof(*ev) ||
3644 skb->len < struct_size(ev, handles, ev->num_hndl)) {
3645 BT_DBG("%s bad parameters", hdev->name);
3646 return;
3647 }
3648
3649 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
3650
3651 for (i = 0; i < ev->num_hndl; i++) {
3652 struct hci_comp_pkts_info *info = &ev->handles[i];
3653 struct hci_conn *conn;
3654 __u16 handle, count;
3655
3656 handle = __le16_to_cpu(info->handle);
3657 count = __le16_to_cpu(info->count);
3658
3659 conn = hci_conn_hash_lookup_handle(hdev, handle);
3660 if (!conn)
3661 continue;
3662
3663 conn->sent -= count;
3664
3665 switch (conn->type) {
3666 case ACL_LINK:
3667 hdev->acl_cnt += count;
3668 if (hdev->acl_cnt > hdev->acl_pkts)
3669 hdev->acl_cnt = hdev->acl_pkts;
3670 break;
3671
3672 case LE_LINK:
3673 if (hdev->le_pkts) {
3674 hdev->le_cnt += count;
3675 if (hdev->le_cnt > hdev->le_pkts)
3676 hdev->le_cnt = hdev->le_pkts;
3677 } else {
3678 hdev->acl_cnt += count;
3679 if (hdev->acl_cnt > hdev->acl_pkts)
3680 hdev->acl_cnt = hdev->acl_pkts;
3681 }
3682 break;
3683
3684 case SCO_LINK:
3685 hdev->sco_cnt += count;
3686 if (hdev->sco_cnt > hdev->sco_pkts)
3687 hdev->sco_cnt = hdev->sco_pkts;
3688 break;
3689
3690 default:
3691 bt_dev_err(hdev, "unknown type %d conn %p",
3692 conn->type, conn);
3693 break;
3694 }
3695 }
3696
3697 queue_work(hdev->workqueue, &hdev->tx_work);
3698 }
3699
3700 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3701 __u16 handle)
3702 {
3703 struct hci_chan *chan;
3704
3705 switch (hdev->dev_type) {
3706 case HCI_PRIMARY:
3707 return hci_conn_hash_lookup_handle(hdev, handle);
3708 case HCI_AMP:
3709 chan = hci_chan_lookup_handle(hdev, handle);
3710 if (chan)
3711 return chan->conn;
3712 break;
3713 default:
3714 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
3715 break;
3716 }
3717
3718 return NULL;
3719 }
3720
3721 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3722 {
3723 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3724 int i;
3725
3726 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3727 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
3728 return;
3729 }
3730
3731 if (skb->len < sizeof(*ev) ||
3732 skb->len < struct_size(ev, handles, ev->num_hndl)) {
3733 BT_DBG("%s bad parameters", hdev->name);
3734 return;
3735 }
3736
3737 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3738 ev->num_hndl);
3739
3740 for (i = 0; i < ev->num_hndl; i++) {
3741 struct hci_comp_blocks_info *info = &ev->handles[i];
3742 struct hci_conn *conn = NULL;
3743 __u16 handle, block_count;
3744
3745 handle = __le16_to_cpu(info->handle);
3746 block_count = __le16_to_cpu(info->blocks);
3747
3748 conn = __hci_conn_lookup_handle(hdev, handle);
3749 if (!conn)
3750 continue;
3751
3752 conn->sent -= block_count;
3753
3754 switch (conn->type) {
3755 case ACL_LINK:
3756 case AMP_LINK:
3757 hdev->block_cnt += block_count;
3758 if (hdev->block_cnt > hdev->num_blocks)
3759 hdev->block_cnt = hdev->num_blocks;
3760 break;
3761
3762 default:
3763 bt_dev_err(hdev, "unknown type %d conn %p",
3764 conn->type, conn);
3765 break;
3766 }
3767 }
3768
3769 queue_work(hdev->workqueue, &hdev->tx_work);
3770 }
3771
3772 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3773 {
3774 struct hci_ev_mode_change *ev = (void *) skb->data;
3775 struct hci_conn *conn;
3776
3777 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3778
3779 hci_dev_lock(hdev);
3780
3781 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3782 if (conn) {
3783 conn->mode = ev->mode;
3784
3785 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3786 &conn->flags)) {
3787 if (conn->mode == HCI_CM_ACTIVE)
3788 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3789 else
3790 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3791 }
3792
3793 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3794 hci_sco_setup(conn, ev->status);
3795 }
3796
3797 hci_dev_unlock(hdev);
3798 }
3799
3800 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3801 {
3802 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3803 struct hci_conn *conn;
3804
3805 BT_DBG("%s", hdev->name);
3806
3807 hci_dev_lock(hdev);
3808
3809 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3810 if (!conn)
3811 goto unlock;
3812
3813 if (conn->state == BT_CONNECTED) {
3814 hci_conn_hold(conn);
3815 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3816 hci_conn_drop(conn);
3817 }
3818
3819 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3820 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3821 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3822 sizeof(ev->bdaddr), &ev->bdaddr);
3823 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3824 u8 secure;
3825
3826 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3827 secure = 1;
3828 else
3829 secure = 0;
3830
3831 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3832 }
3833
3834 unlock:
3835 hci_dev_unlock(hdev);
3836 }
3837
3838 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3839 {
3840 if (key_type == HCI_LK_CHANGED_COMBINATION)
3841 return;
3842
3843 conn->pin_length = pin_len;
3844 conn->key_type = key_type;
3845
3846 switch (key_type) {
3847 case HCI_LK_LOCAL_UNIT:
3848 case HCI_LK_REMOTE_UNIT:
3849 case HCI_LK_DEBUG_COMBINATION:
3850 return;
3851 case HCI_LK_COMBINATION:
3852 if (pin_len == 16)
3853 conn->pending_sec_level = BT_SECURITY_HIGH;
3854 else
3855 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3856 break;
3857 case HCI_LK_UNAUTH_COMBINATION_P192:
3858 case HCI_LK_UNAUTH_COMBINATION_P256:
3859 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3860 break;
3861 case HCI_LK_AUTH_COMBINATION_P192:
3862 conn->pending_sec_level = BT_SECURITY_HIGH;
3863 break;
3864 case HCI_LK_AUTH_COMBINATION_P256:
3865 conn->pending_sec_level = BT_SECURITY_FIPS;
3866 break;
3867 }
3868 }
3869
3870 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3871 {
3872 struct hci_ev_link_key_req *ev = (void *) skb->data;
3873 struct hci_cp_link_key_reply cp;
3874 struct hci_conn *conn;
3875 struct link_key *key;
3876
3877 BT_DBG("%s", hdev->name);
3878
3879 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3880 return;
3881
3882 hci_dev_lock(hdev);
3883
3884 key = hci_find_link_key(hdev, &ev->bdaddr);
3885 if (!key) {
3886 BT_DBG("%s link key not found for %pMR", hdev->name,
3887 &ev->bdaddr);
3888 goto not_found;
3889 }
3890
3891 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3892 &ev->bdaddr);
3893
3894 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3895 if (conn) {
3896 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3897
3898 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3899 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3900 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3901 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3902 goto not_found;
3903 }
3904
3905 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3906 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3907 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3908 BT_DBG("%s ignoring key unauthenticated for high security",
3909 hdev->name);
3910 goto not_found;
3911 }
3912
3913 conn_set_key(conn, key->type, key->pin_len);
3914 }
3915
3916 bacpy(&cp.bdaddr, &ev->bdaddr);
3917 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3918
3919 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3920
3921 hci_dev_unlock(hdev);
3922
3923 return;
3924
3925 not_found:
3926 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3927 hci_dev_unlock(hdev);
3928 }
3929
3930 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3931 {
3932 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3933 struct hci_conn *conn;
3934 struct link_key *key;
3935 bool persistent;
3936 u8 pin_len = 0;
3937
3938 BT_DBG("%s", hdev->name);
3939
3940 hci_dev_lock(hdev);
3941
3942 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3943 if (!conn)
3944 goto unlock;
3945
3946 hci_conn_hold(conn);
3947 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3948 hci_conn_drop(conn);
3949
3950 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3951 conn_set_key(conn, ev->key_type, conn->pin_length);
3952
3953 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3954 goto unlock;
3955
3956 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3957 ev->key_type, pin_len, &persistent);
3958 if (!key)
3959 goto unlock;
3960
3961 /* Update connection information since adding the key will have
3962 * fixed up the type in the case of changed combination keys.
3963 */
3964 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
3965 conn_set_key(conn, key->type, key->pin_len);
3966
3967 mgmt_new_link_key(hdev, key, persistent);
3968
3969 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3970 * is set. If it's not set simply remove the key from the kernel
3971 * list (we've still notified user space about it but with
3972 * store_hint being 0).
3973 */
3974 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3975 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
3976 list_del_rcu(&key->list);
3977 kfree_rcu(key, rcu);
3978 goto unlock;
3979 }
3980
3981 if (persistent)
3982 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3983 else
3984 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3985
3986 unlock:
3987 hci_dev_unlock(hdev);
3988 }
3989
3990 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3991 {
3992 struct hci_ev_clock_offset *ev = (void *) skb->data;
3993 struct hci_conn *conn;
3994
3995 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3996
3997 hci_dev_lock(hdev);
3998
3999 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4000 if (conn && !ev->status) {
4001 struct inquiry_entry *ie;
4002
4003 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4004 if (ie) {
4005 ie->data.clock_offset = ev->clock_offset;
4006 ie->timestamp = jiffies;
4007 }
4008 }
4009
4010 hci_dev_unlock(hdev);
4011 }
4012
4013 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
4014 {
4015 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
4016 struct hci_conn *conn;
4017
4018 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4019
4020 hci_dev_lock(hdev);
4021
4022 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4023 if (conn && !ev->status)
4024 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4025
4026 hci_dev_unlock(hdev);
4027 }
4028
4029 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
4030 {
4031 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
4032 struct inquiry_entry *ie;
4033
4034 BT_DBG("%s", hdev->name);
4035
4036 hci_dev_lock(hdev);
4037
4038 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4039 if (ie) {
4040 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4041 ie->timestamp = jiffies;
4042 }
4043
4044 hci_dev_unlock(hdev);
4045 }
4046
4047 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
4048 struct sk_buff *skb)
4049 {
4050 struct inquiry_data data;
4051 int num_rsp = *((__u8 *) skb->data);
4052
4053 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
4054
4055 if (!num_rsp)
4056 return;
4057
4058 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4059 return;
4060
4061 hci_dev_lock(hdev);
4062
4063 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
4064 struct inquiry_info_with_rssi_and_pscan_mode *info;
4065 info = (void *) (skb->data + 1);
4066
4067 for (; num_rsp; num_rsp--, info++) {
4068 u32 flags;
4069
4070 bacpy(&data.bdaddr, &info->bdaddr);
4071 data.pscan_rep_mode = info->pscan_rep_mode;
4072 data.pscan_period_mode = info->pscan_period_mode;
4073 data.pscan_mode = info->pscan_mode;
4074 memcpy(data.dev_class, info->dev_class, 3);
4075 data.clock_offset = info->clock_offset;
4076 data.rssi = info->rssi;
4077 data.ssp_mode = 0x00;
4078
4079 flags = hci_inquiry_cache_update(hdev, &data, false);
4080
4081 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4082 info->dev_class, info->rssi,
4083 flags, NULL, 0, NULL, 0);
4084 }
4085 } else {
4086 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
4087
4088 for (; num_rsp; num_rsp--, info++) {
4089 u32 flags;
4090
4091 bacpy(&data.bdaddr, &info->bdaddr);
4092 data.pscan_rep_mode = info->pscan_rep_mode;
4093 data.pscan_period_mode = info->pscan_period_mode;
4094 data.pscan_mode = 0x00;
4095 memcpy(data.dev_class, info->dev_class, 3);
4096 data.clock_offset = info->clock_offset;
4097 data.rssi = info->rssi;
4098 data.ssp_mode = 0x00;
4099
4100 flags = hci_inquiry_cache_update(hdev, &data, false);
4101
4102 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4103 info->dev_class, info->rssi,
4104 flags, NULL, 0, NULL, 0);
4105 }
4106 }
4107
4108 hci_dev_unlock(hdev);
4109 }
4110
4111 static void hci_remote_ext_features_evt(struct hci_dev *hdev,
4112 struct sk_buff *skb)
4113 {
4114 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
4115 struct hci_conn *conn;
4116
4117 BT_DBG("%s", hdev->name);
4118
4119 hci_dev_lock(hdev);
4120
4121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4122 if (!conn)
4123 goto unlock;
4124
4125 if (ev->page < HCI_MAX_PAGES)
4126 memcpy(conn->features[ev->page], ev->features, 8);
4127
4128 if (!ev->status && ev->page == 0x01) {
4129 struct inquiry_entry *ie;
4130
4131 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4132 if (ie)
4133 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4134
4135 if (ev->features[0] & LMP_HOST_SSP) {
4136 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4137 } else {
4138 /* It is mandatory by the Bluetooth specification that
4139 * Extended Inquiry Results are only used when Secure
4140 * Simple Pairing is enabled, but some devices violate
4141 * this.
4142 *
4143 * To make these devices work, the internal SSP
4144 * enabled flag needs to be cleared if the remote host
4145 * features do not indicate SSP support */
4146 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4147 }
4148
4149 if (ev->features[0] & LMP_HOST_SC)
4150 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4151 }
4152
4153 if (conn->state != BT_CONFIG)
4154 goto unlock;
4155
4156 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4157 struct hci_cp_remote_name_req cp;
4158 memset(&cp, 0, sizeof(cp));
4159 bacpy(&cp.bdaddr, &conn->dst);
4160 cp.pscan_rep_mode = 0x02;
4161 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4162 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4163 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4164
4165 if (!hci_outgoing_auth_needed(hdev, conn)) {
4166 conn->state = BT_CONNECTED;
4167 hci_connect_cfm(conn, ev->status);
4168 hci_conn_drop(conn);
4169 }
4170
4171 unlock:
4172 hci_dev_unlock(hdev);
4173 }
4174
4175 static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
4176 struct sk_buff *skb)
4177 {
4178 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
4179 struct hci_conn *conn;
4180
4181 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4182
4183 hci_dev_lock(hdev);
4184
4185 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4186 if (!conn) {
4187 if (ev->link_type == ESCO_LINK)
4188 goto unlock;
4189
4190 /* When the link type in the event indicates SCO connection
4191 * and lookup of the connection object fails, then check
4192 * if an eSCO connection object exists.
4193 *
4194 * The core limits the synchronous connections to either
4195 * SCO or eSCO. The eSCO connection is preferred and tried
4196 * to be setup first and until successfully established,
4197 * the link type will be hinted as eSCO.
4198 */
4199 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4200 if (!conn)
4201 goto unlock;
4202 }
4203
4204 switch (ev->status) {
4205 case 0x00:
4206 conn->handle = __le16_to_cpu(ev->handle);
4207 conn->state = BT_CONNECTED;
4208 conn->type = ev->link_type;
4209
4210 hci_debugfs_create_conn(conn);
4211 hci_conn_add_sysfs(conn);
4212 break;
4213
4214 case 0x10: /* Connection Accept Timeout */
4215 case 0x0d: /* Connection Rejected due to Limited Resources */
4216 case 0x11: /* Unsupported Feature or Parameter Value */
4217 case 0x1c: /* SCO interval rejected */
4218 case 0x1a: /* Unsupported Remote Feature */
4219 case 0x1f: /* Unspecified error */
4220 case 0x20: /* Unsupported LMP Parameter value */
4221 if (conn->out) {
4222 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
4223 (hdev->esco_type & EDR_ESCO_MASK);
4224 if (hci_setup_sync(conn, conn->link->handle))
4225 goto unlock;
4226 }
4227 /* fall through */
4228
4229 default:
4230 conn->state = BT_CLOSED;
4231 break;
4232 }
4233
4234 hci_connect_cfm(conn, ev->status);
4235 if (ev->status)
4236 hci_conn_del(conn);
4237
4238 unlock:
4239 hci_dev_unlock(hdev);
4240 }
4241
4242 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
4243 {
4244 size_t parsed = 0;
4245
4246 while (parsed < eir_len) {
4247 u8 field_len = eir[0];
4248
4249 if (field_len == 0)
4250 return parsed;
4251
4252 parsed += field_len + 1;
4253 eir += field_len + 1;
4254 }
4255
4256 return eir_len;
4257 }
4258
4259 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
4260 struct sk_buff *skb)
4261 {
4262 struct inquiry_data data;
4263 struct extended_inquiry_info *info = (void *) (skb->data + 1);
4264 int num_rsp = *((__u8 *) skb->data);
4265 size_t eir_len;
4266
4267 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
4268
4269 if (!num_rsp)
4270 return;
4271
4272 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4273 return;
4274
4275 hci_dev_lock(hdev);
4276
4277 for (; num_rsp; num_rsp--, info++) {
4278 u32 flags;
4279 bool name_known;
4280
4281 bacpy(&data.bdaddr, &info->bdaddr);
4282 data.pscan_rep_mode = info->pscan_rep_mode;
4283 data.pscan_period_mode = info->pscan_period_mode;
4284 data.pscan_mode = 0x00;
4285 memcpy(data.dev_class, info->dev_class, 3);
4286 data.clock_offset = info->clock_offset;
4287 data.rssi = info->rssi;
4288 data.ssp_mode = 0x01;
4289
4290 if (hci_dev_test_flag(hdev, HCI_MGMT))
4291 name_known = eir_get_data(info->data,
4292 sizeof(info->data),
4293 EIR_NAME_COMPLETE, NULL);
4294 else
4295 name_known = true;
4296
4297 flags = hci_inquiry_cache_update(hdev, &data, name_known);
4298
4299 eir_len = eir_get_length(info->data, sizeof(info->data));
4300
4301 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4302 info->dev_class, info->rssi,
4303 flags, info->data, eir_len, NULL, 0);
4304 }
4305
4306 hci_dev_unlock(hdev);
4307 }
4308
4309 static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
4310 struct sk_buff *skb)
4311 {
4312 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
4313 struct hci_conn *conn;
4314
4315 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
4316 __le16_to_cpu(ev->handle));
4317
4318 hci_dev_lock(hdev);
4319
4320 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4321 if (!conn)
4322 goto unlock;
4323
4324 /* For BR/EDR the necessary steps are taken through the
4325 * auth_complete event.
4326 */
4327 if (conn->type != LE_LINK)
4328 goto unlock;
4329
4330 if (!ev->status)
4331 conn->sec_level = conn->pending_sec_level;
4332
4333 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
4334
4335 if (ev->status && conn->state == BT_CONNECTED) {
4336 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4337 hci_conn_drop(conn);
4338 goto unlock;
4339 }
4340
4341 if (conn->state == BT_CONFIG) {
4342 if (!ev->status)
4343 conn->state = BT_CONNECTED;
4344
4345 hci_connect_cfm(conn, ev->status);
4346 hci_conn_drop(conn);
4347 } else {
4348 hci_auth_cfm(conn, ev->status);
4349
4350 hci_conn_hold(conn);
4351 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4352 hci_conn_drop(conn);
4353 }
4354
4355 unlock:
4356 hci_dev_unlock(hdev);
4357 }
4358
4359 static u8 hci_get_auth_req(struct hci_conn *conn)
4360 {
4361 /* If remote requests no-bonding follow that lead */
4362 if (conn->remote_auth == HCI_AT_NO_BONDING ||
4363 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
4364 return conn->remote_auth | (conn->auth_type & 0x01);
4365
4366 /* If both remote and local have enough IO capabilities, require
4367 * MITM protection
4368 */
4369 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
4370 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
4371 return conn->remote_auth | 0x01;
4372
4373 /* No MITM protection possible so ignore remote requirement */
4374 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
4375 }
4376
4377 static u8 bredr_oob_data_present(struct hci_conn *conn)
4378 {
4379 struct hci_dev *hdev = conn->hdev;
4380 struct oob_data *data;
4381
4382 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
4383 if (!data)
4384 return 0x00;
4385
4386 if (bredr_sc_enabled(hdev)) {
4387 /* When Secure Connections is enabled, then just
4388 * return the present value stored with the OOB
4389 * data. The stored value contains the right present
4390 * information. However it can only be trusted when
4391 * not in Secure Connection Only mode.
4392 */
4393 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
4394 return data->present;
4395
4396 /* When Secure Connections Only mode is enabled, then
4397 * the P-256 values are required. If they are not
4398 * available, then do not declare that OOB data is
4399 * present.
4400 */
4401 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
4402 !memcmp(data->hash256, ZERO_KEY, 16))
4403 return 0x00;
4404
4405 return 0x02;
4406 }
4407
4408 /* When Secure Connections is not enabled or actually
4409 * not supported by the hardware, then check that if
4410 * P-192 data values are present.
4411 */
4412 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
4413 !memcmp(data->hash192, ZERO_KEY, 16))
4414 return 0x00;
4415
4416 return 0x01;
4417 }
4418
4419 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4420 {
4421 struct hci_ev_io_capa_request *ev = (void *) skb->data;
4422 struct hci_conn *conn;
4423
4424 BT_DBG("%s", hdev->name);
4425
4426 hci_dev_lock(hdev);
4427
4428 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4429 if (!conn)
4430 goto unlock;
4431
4432 hci_conn_hold(conn);
4433
4434 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4435 goto unlock;
4436
4437 /* Allow pairing if we're pairable, the initiators of the
4438 * pairing or if the remote is not requesting bonding.
4439 */
4440 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
4441 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
4442 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
4443 struct hci_cp_io_capability_reply cp;
4444
4445 bacpy(&cp.bdaddr, &ev->bdaddr);
4446 /* Change the IO capability from KeyboardDisplay
4447 * to DisplayYesNo as it is not supported by BT spec. */
4448 cp.capability = (conn->io_capability == 0x04) ?
4449 HCI_IO_DISPLAY_YESNO : conn->io_capability;
4450
4451 /* If we are initiators, there is no remote information yet */
4452 if (conn->remote_auth == 0xff) {
4453 /* Request MITM protection if our IO caps allow it
4454 * except for the no-bonding case.
4455 */
4456 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4457 conn->auth_type != HCI_AT_NO_BONDING)
4458 conn->auth_type |= 0x01;
4459 } else {
4460 conn->auth_type = hci_get_auth_req(conn);
4461 }
4462
4463 /* If we're not bondable, force one of the non-bondable
4464 * authentication requirement values.
4465 */
4466 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4467 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
4468
4469 cp.authentication = conn->auth_type;
4470 cp.oob_data = bredr_oob_data_present(conn);
4471
4472 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4473 sizeof(cp), &cp);
4474 } else {
4475 struct hci_cp_io_capability_neg_reply cp;
4476
4477 bacpy(&cp.bdaddr, &ev->bdaddr);
4478 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4479
4480 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4481 sizeof(cp), &cp);
4482 }
4483
4484 unlock:
4485 hci_dev_unlock(hdev);
4486 }
4487
4488 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4489 {
4490 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
4491 struct hci_conn *conn;
4492
4493 BT_DBG("%s", hdev->name);
4494
4495 hci_dev_lock(hdev);
4496
4497 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4498 if (!conn)
4499 goto unlock;
4500
4501 conn->remote_cap = ev->capability;
4502 conn->remote_auth = ev->authentication;
4503
4504 unlock:
4505 hci_dev_unlock(hdev);
4506 }
4507
4508 static void hci_user_confirm_request_evt(struct hci_dev *hdev,
4509 struct sk_buff *skb)
4510 {
4511 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4512 int loc_mitm, rem_mitm, confirm_hint = 0;
4513 struct hci_conn *conn;
4514
4515 BT_DBG("%s", hdev->name);
4516
4517 hci_dev_lock(hdev);
4518
4519 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4520 goto unlock;
4521
4522 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4523 if (!conn)
4524 goto unlock;
4525
4526 loc_mitm = (conn->auth_type & 0x01);
4527 rem_mitm = (conn->remote_auth & 0x01);
4528
4529 /* If we require MITM but the remote device can't provide that
4530 * (it has NoInputNoOutput) then reject the confirmation
4531 * request. We check the security level here since it doesn't
4532 * necessarily match conn->auth_type.
4533 */
4534 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
4535 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4536 BT_DBG("Rejecting request: remote device can't provide MITM");
4537 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4538 sizeof(ev->bdaddr), &ev->bdaddr);
4539 goto unlock;
4540 }
4541
4542 /* If no side requires MITM protection; auto-accept */
4543 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
4544 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4545
4546 /* If we're not the initiators request authorization to
4547 * proceed from user space (mgmt_user_confirm with
4548 * confirm_hint set to 1). The exception is if neither
4549 * side had MITM or if the local IO capability is
4550 * NoInputNoOutput, in which case we do auto-accept
4551 */
4552 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4553 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4554 (loc_mitm || rem_mitm)) {
4555 BT_DBG("Confirming auto-accept as acceptor");
4556 confirm_hint = 1;
4557 goto confirm;
4558 }
4559
4560 BT_DBG("Auto-accept of user confirmation with %ums delay",
4561 hdev->auto_accept_delay);
4562
4563 if (hdev->auto_accept_delay > 0) {
4564 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4565 queue_delayed_work(conn->hdev->workqueue,
4566 &conn->auto_accept_work, delay);
4567 goto unlock;
4568 }
4569
4570 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4571 sizeof(ev->bdaddr), &ev->bdaddr);
4572 goto unlock;
4573 }
4574
4575 confirm:
4576 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4577 le32_to_cpu(ev->passkey), confirm_hint);
4578
4579 unlock:
4580 hci_dev_unlock(hdev);
4581 }
4582
4583 static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4584 struct sk_buff *skb)
4585 {
4586 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4587
4588 BT_DBG("%s", hdev->name);
4589
4590 if (hci_dev_test_flag(hdev, HCI_MGMT))
4591 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4592 }
4593
4594 static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4595 struct sk_buff *skb)
4596 {
4597 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4598 struct hci_conn *conn;
4599
4600 BT_DBG("%s", hdev->name);
4601
4602 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4603 if (!conn)
4604 return;
4605
4606 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4607 conn->passkey_entered = 0;
4608
4609 if (hci_dev_test_flag(hdev, HCI_MGMT))
4610 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4611 conn->dst_type, conn->passkey_notify,
4612 conn->passkey_entered);
4613 }
4614
4615 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4616 {
4617 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4618 struct hci_conn *conn;
4619
4620 BT_DBG("%s", hdev->name);
4621
4622 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4623 if (!conn)
4624 return;
4625
4626 switch (ev->type) {
4627 case HCI_KEYPRESS_STARTED:
4628 conn->passkey_entered = 0;
4629 return;
4630
4631 case HCI_KEYPRESS_ENTERED:
4632 conn->passkey_entered++;
4633 break;
4634
4635 case HCI_KEYPRESS_ERASED:
4636 conn->passkey_entered--;
4637 break;
4638
4639 case HCI_KEYPRESS_CLEARED:
4640 conn->passkey_entered = 0;
4641 break;
4642
4643 case HCI_KEYPRESS_COMPLETED:
4644 return;
4645 }
4646
4647 if (hci_dev_test_flag(hdev, HCI_MGMT))
4648 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4649 conn->dst_type, conn->passkey_notify,
4650 conn->passkey_entered);
4651 }
4652
4653 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4654 struct sk_buff *skb)
4655 {
4656 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4657 struct hci_conn *conn;
4658
4659 BT_DBG("%s", hdev->name);
4660
4661 hci_dev_lock(hdev);
4662
4663 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4664 if (!conn)
4665 goto unlock;
4666
4667 /* Reset the authentication requirement to unknown */
4668 conn->remote_auth = 0xff;
4669
4670 /* To avoid duplicate auth_failed events to user space we check
4671 * the HCI_CONN_AUTH_PEND flag which will be set if we
4672 * initiated the authentication. A traditional auth_complete
4673 * event gets always produced as initiator and is also mapped to
4674 * the mgmt_auth_failed event */
4675 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4676 mgmt_auth_failed(conn, ev->status);
4677
4678 hci_conn_drop(conn);
4679
4680 unlock:
4681 hci_dev_unlock(hdev);
4682 }
4683
4684 static void hci_remote_host_features_evt(struct hci_dev *hdev,
4685 struct sk_buff *skb)
4686 {
4687 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4688 struct inquiry_entry *ie;
4689 struct hci_conn *conn;
4690
4691 BT_DBG("%s", hdev->name);
4692
4693 hci_dev_lock(hdev);
4694
4695 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4696 if (conn)
4697 memcpy(conn->features[1], ev->features, 8);
4698
4699 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4700 if (ie)
4701 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4702
4703 hci_dev_unlock(hdev);
4704 }
4705
4706 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4707 struct sk_buff *skb)
4708 {
4709 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4710 struct oob_data *data;
4711
4712 BT_DBG("%s", hdev->name);
4713
4714 hci_dev_lock(hdev);
4715
4716 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4717 goto unlock;
4718
4719 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4720 if (!data) {
4721 struct hci_cp_remote_oob_data_neg_reply cp;
4722
4723 bacpy(&cp.bdaddr, &ev->bdaddr);
4724 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4725 sizeof(cp), &cp);
4726 goto unlock;
4727 }
4728
4729 if (bredr_sc_enabled(hdev)) {
4730 struct hci_cp_remote_oob_ext_data_reply cp;
4731
4732 bacpy(&cp.bdaddr, &ev->bdaddr);
4733 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4734 memset(cp.hash192, 0, sizeof(cp.hash192));
4735 memset(cp.rand192, 0, sizeof(cp.rand192));
4736 } else {
4737 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4738 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4739 }
4740 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4741 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4742
4743 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4744 sizeof(cp), &cp);
4745 } else {
4746 struct hci_cp_remote_oob_data_reply cp;
4747
4748 bacpy(&cp.bdaddr, &ev->bdaddr);
4749 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4750 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4751
4752 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4753 sizeof(cp), &cp);
4754 }
4755
4756 unlock:
4757 hci_dev_unlock(hdev);
4758 }
4759
4760 #if IS_ENABLED(CONFIG_BT_HS)
4761 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4762 {
4763 struct hci_ev_channel_selected *ev = (void *)skb->data;
4764 struct hci_conn *hcon;
4765
4766 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4767
4768 skb_pull(skb, sizeof(*ev));
4769
4770 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4771 if (!hcon)
4772 return;
4773
4774 amp_read_loc_assoc_final_data(hdev, hcon);
4775 }
4776
4777 static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4778 struct sk_buff *skb)
4779 {
4780 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4781 struct hci_conn *hcon, *bredr_hcon;
4782
4783 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4784 ev->status);
4785
4786 hci_dev_lock(hdev);
4787
4788 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4789 if (!hcon) {
4790 hci_dev_unlock(hdev);
4791 return;
4792 }
4793
4794 if (ev->status) {
4795 hci_conn_del(hcon);
4796 hci_dev_unlock(hdev);
4797 return;
4798 }
4799
4800 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4801
4802 hcon->state = BT_CONNECTED;
4803 bacpy(&hcon->dst, &bredr_hcon->dst);
4804
4805 hci_conn_hold(hcon);
4806 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4807 hci_conn_drop(hcon);
4808
4809 hci_debugfs_create_conn(hcon);
4810 hci_conn_add_sysfs(hcon);
4811
4812 amp_physical_cfm(bredr_hcon, hcon);
4813
4814 hci_dev_unlock(hdev);
4815 }
4816
4817 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4818 {
4819 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4820 struct hci_conn *hcon;
4821 struct hci_chan *hchan;
4822 struct amp_mgr *mgr;
4823
4824 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4825 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4826 ev->status);
4827
4828 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4829 if (!hcon)
4830 return;
4831
4832 /* Create AMP hchan */
4833 hchan = hci_chan_create(hcon);
4834 if (!hchan)
4835 return;
4836
4837 hchan->handle = le16_to_cpu(ev->handle);
4838
4839 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4840
4841 mgr = hcon->amp_mgr;
4842 if (mgr && mgr->bredr_chan) {
4843 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4844
4845 l2cap_chan_lock(bredr_chan);
4846
4847 bredr_chan->conn->mtu = hdev->block_mtu;
4848 l2cap_logical_cfm(bredr_chan, hchan, 0);
4849 hci_conn_hold(hcon);
4850
4851 l2cap_chan_unlock(bredr_chan);
4852 }
4853 }
4854
4855 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4856 struct sk_buff *skb)
4857 {
4858 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4859 struct hci_chan *hchan;
4860
4861 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4862 le16_to_cpu(ev->handle), ev->status);
4863
4864 if (ev->status)
4865 return;
4866
4867 hci_dev_lock(hdev);
4868
4869 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4870 if (!hchan)
4871 goto unlock;
4872
4873 amp_destroy_logical_link(hchan, ev->reason);
4874
4875 unlock:
4876 hci_dev_unlock(hdev);
4877 }
4878
4879 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4880 struct sk_buff *skb)
4881 {
4882 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4883 struct hci_conn *hcon;
4884
4885 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4886
4887 if (ev->status)
4888 return;
4889
4890 hci_dev_lock(hdev);
4891
4892 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4893 if (hcon) {
4894 hcon->state = BT_CLOSED;
4895 hci_conn_del(hcon);
4896 }
4897
4898 hci_dev_unlock(hdev);
4899 }
4900 #endif
4901
4902 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
4903 bdaddr_t *bdaddr, u8 bdaddr_type, u8 role, u16 handle,
4904 u16 interval, u16 latency, u16 supervision_timeout)
4905 {
4906 struct hci_conn_params *params;
4907 struct hci_conn *conn;
4908 struct smp_irk *irk;
4909 u8 addr_type;
4910
4911 hci_dev_lock(hdev);
4912
4913 /* All controllers implicitly stop advertising in the event of a
4914 * connection, so ensure that the state bit is cleared.
4915 */
4916 hci_dev_clear_flag(hdev, HCI_LE_ADV);
4917
4918 conn = hci_lookup_le_connect(hdev);
4919 if (!conn) {
4920 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
4921 if (!conn) {
4922 bt_dev_err(hdev, "no memory for new connection");
4923 goto unlock;
4924 }
4925
4926 conn->dst_type = bdaddr_type;
4927
4928 /* If we didn't have a hci_conn object previously
4929 * but we're in master role this must be something
4930 * initiated using a white list. Since white list based
4931 * connections are not "first class citizens" we don't
4932 * have full tracking of them. Therefore, we go ahead
4933 * with a "best effort" approach of determining the
4934 * initiator address based on the HCI_PRIVACY flag.
4935 */
4936 if (conn->out) {
4937 conn->resp_addr_type = bdaddr_type;
4938 bacpy(&conn->resp_addr, bdaddr);
4939 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
4940 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4941 bacpy(&conn->init_addr, &hdev->rpa);
4942 } else {
4943 hci_copy_identity_address(hdev,
4944 &conn->init_addr,
4945 &conn->init_addr_type);
4946 }
4947 }
4948 } else {
4949 cancel_delayed_work(&conn->le_conn_timeout);
4950 }
4951
4952 if (!conn->out) {
4953 /* Set the responder (our side) address type based on
4954 * the advertising address type.
4955 */
4956 conn->resp_addr_type = hdev->adv_addr_type;
4957 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
4958 /* In case of ext adv, resp_addr will be updated in
4959 * Adv Terminated event.
4960 */
4961 if (!ext_adv_capable(hdev))
4962 bacpy(&conn->resp_addr, &hdev->random_addr);
4963 } else {
4964 bacpy(&conn->resp_addr, &hdev->bdaddr);
4965 }
4966
4967 conn->init_addr_type = bdaddr_type;
4968 bacpy(&conn->init_addr, bdaddr);
4969
4970 /* For incoming connections, set the default minimum
4971 * and maximum connection interval. They will be used
4972 * to check if the parameters are in range and if not
4973 * trigger the connection update procedure.
4974 */
4975 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4976 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4977 }
4978
4979 /* Lookup the identity address from the stored connection
4980 * address and address type.
4981 *
4982 * When establishing connections to an identity address, the
4983 * connection procedure will store the resolvable random
4984 * address first. Now if it can be converted back into the
4985 * identity address, start using the identity address from
4986 * now on.
4987 */
4988 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4989 if (irk) {
4990 bacpy(&conn->dst, &irk->bdaddr);
4991 conn->dst_type = irk->addr_type;
4992 }
4993
4994 if (status) {
4995 hci_le_conn_failed(conn, status);
4996 goto unlock;
4997 }
4998
4999 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5000 addr_type = BDADDR_LE_PUBLIC;
5001 else
5002 addr_type = BDADDR_LE_RANDOM;
5003
5004 /* Drop the connection if the device is blocked */
5005 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
5006 hci_conn_drop(conn);
5007 goto unlock;
5008 }
5009
5010 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5011 mgmt_device_connected(hdev, conn, 0, NULL, 0);
5012
5013 conn->sec_level = BT_SECURITY_LOW;
5014 conn->handle = handle;
5015 conn->state = BT_CONFIG;
5016
5017 conn->le_conn_interval = interval;
5018 conn->le_conn_latency = latency;
5019 conn->le_supv_timeout = supervision_timeout;
5020
5021 hci_debugfs_create_conn(conn);
5022 hci_conn_add_sysfs(conn);
5023
5024 /* The remote features procedure is defined for master
5025 * role only. So only in case of an initiated connection
5026 * request the remote features.
5027 *
5028 * If the local controller supports slave-initiated features
5029 * exchange, then requesting the remote features in slave
5030 * role is possible. Otherwise just transition into the
5031 * connected state without requesting the remote features.
5032 */
5033 if (conn->out ||
5034 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
5035 struct hci_cp_le_read_remote_features cp;
5036
5037 cp.handle = __cpu_to_le16(conn->handle);
5038
5039 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5040 sizeof(cp), &cp);
5041
5042 hci_conn_hold(conn);
5043 } else {
5044 conn->state = BT_CONNECTED;
5045 hci_connect_cfm(conn, status);
5046 }
5047
5048 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5049 conn->dst_type);
5050 if (params) {
5051 list_del_init(&params->action);
5052 if (params->conn) {
5053 hci_conn_drop(params->conn);
5054 hci_conn_put(params->conn);
5055 params->conn = NULL;
5056 }
5057 }
5058
5059 unlock:
5060 hci_update_background_scan(hdev);
5061 hci_dev_unlock(hdev);
5062 }
5063
5064 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
5065 {
5066 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
5067
5068 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5069
5070 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5071 ev->role, le16_to_cpu(ev->handle),
5072 le16_to_cpu(ev->interval),
5073 le16_to_cpu(ev->latency),
5074 le16_to_cpu(ev->supervision_timeout));
5075 }
5076
5077 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev,
5078 struct sk_buff *skb)
5079 {
5080 struct hci_ev_le_enh_conn_complete *ev = (void *) skb->data;
5081
5082 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5083
5084 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5085 ev->role, le16_to_cpu(ev->handle),
5086 le16_to_cpu(ev->interval),
5087 le16_to_cpu(ev->latency),
5088 le16_to_cpu(ev->supervision_timeout));
5089 }
5090
5091 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
5092 {
5093 struct hci_evt_le_ext_adv_set_term *ev = (void *) skb->data;
5094 struct hci_conn *conn;
5095
5096 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5097
5098 if (ev->status)
5099 return;
5100
5101 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
5102 if (conn) {
5103 struct adv_info *adv_instance;
5104
5105 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM)
5106 return;
5107
5108 if (!hdev->cur_adv_instance) {
5109 bacpy(&conn->resp_addr, &hdev->random_addr);
5110 return;
5111 }
5112
5113 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
5114 if (adv_instance)
5115 bacpy(&conn->resp_addr, &adv_instance->random_addr);
5116 }
5117 }
5118
5119 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
5120 struct sk_buff *skb)
5121 {
5122 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
5123 struct hci_conn *conn;
5124
5125 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5126
5127 if (ev->status)
5128 return;
5129
5130 hci_dev_lock(hdev);
5131
5132 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5133 if (conn) {
5134 conn->le_conn_interval = le16_to_cpu(ev->interval);
5135 conn->le_conn_latency = le16_to_cpu(ev->latency);
5136 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
5137 }
5138
5139 hci_dev_unlock(hdev);
5140 }
5141
5142 /* This function requires the caller holds hdev->lock */
5143 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
5144 bdaddr_t *addr,
5145 u8 addr_type, u8 adv_type,
5146 bdaddr_t *direct_rpa)
5147 {
5148 struct hci_conn *conn;
5149 struct hci_conn_params *params;
5150
5151 /* If the event is not connectable don't proceed further */
5152 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
5153 return NULL;
5154
5155 /* Ignore if the device is blocked */
5156 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
5157 return NULL;
5158
5159 /* Most controller will fail if we try to create new connections
5160 * while we have an existing one in slave role.
5161 */
5162 if (hdev->conn_hash.le_num_slave > 0)
5163 return NULL;
5164
5165 /* If we're not connectable only connect devices that we have in
5166 * our pend_le_conns list.
5167 */
5168 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
5169 addr_type);
5170 if (!params)
5171 return NULL;
5172
5173 if (!params->explicit_connect) {
5174 switch (params->auto_connect) {
5175 case HCI_AUTO_CONN_DIRECT:
5176 /* Only devices advertising with ADV_DIRECT_IND are
5177 * triggering a connection attempt. This is allowing
5178 * incoming connections from slave devices.
5179 */
5180 if (adv_type != LE_ADV_DIRECT_IND)
5181 return NULL;
5182 break;
5183 case HCI_AUTO_CONN_ALWAYS:
5184 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
5185 * are triggering a connection attempt. This means
5186 * that incoming connectioms from slave device are
5187 * accepted and also outgoing connections to slave
5188 * devices are established when found.
5189 */
5190 break;
5191 default:
5192 return NULL;
5193 }
5194 }
5195
5196 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
5197 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER,
5198 direct_rpa);
5199 if (!IS_ERR(conn)) {
5200 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
5201 * by higher layer that tried to connect, if no then
5202 * store the pointer since we don't really have any
5203 * other owner of the object besides the params that
5204 * triggered it. This way we can abort the connection if
5205 * the parameters get removed and keep the reference
5206 * count consistent once the connection is established.
5207 */
5208
5209 if (!params->explicit_connect)
5210 params->conn = hci_conn_get(conn);
5211
5212 return conn;
5213 }
5214
5215 switch (PTR_ERR(conn)) {
5216 case -EBUSY:
5217 /* If hci_connect() returns -EBUSY it means there is already
5218 * an LE connection attempt going on. Since controllers don't
5219 * support more than one connection attempt at the time, we
5220 * don't consider this an error case.
5221 */
5222 break;
5223 default:
5224 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
5225 return NULL;
5226 }
5227
5228 return NULL;
5229 }
5230
5231 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
5232 u8 bdaddr_type, bdaddr_t *direct_addr,
5233 u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
5234 {
5235 struct discovery_state *d = &hdev->discovery;
5236 struct smp_irk *irk;
5237 struct hci_conn *conn;
5238 bool match;
5239 u32 flags;
5240 u8 *ptr, real_len;
5241
5242 switch (type) {
5243 case LE_ADV_IND:
5244 case LE_ADV_DIRECT_IND:
5245 case LE_ADV_SCAN_IND:
5246 case LE_ADV_NONCONN_IND:
5247 case LE_ADV_SCAN_RSP:
5248 break;
5249 default:
5250 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
5251 "type: 0x%02x", type);
5252 return;
5253 }
5254
5255 /* Find the end of the data in case the report contains padded zero
5256 * bytes at the end causing an invalid length value.
5257 *
5258 * When data is NULL, len is 0 so there is no need for extra ptr
5259 * check as 'ptr < data + 0' is already false in such case.
5260 */
5261 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
5262 if (ptr + 1 + *ptr > data + len)
5263 break;
5264 }
5265
5266 real_len = ptr - data;
5267
5268 /* Adjust for actual length */
5269 if (len != real_len) {
5270 bt_dev_err_ratelimited(hdev, "advertising data len corrected");
5271 len = real_len;
5272 }
5273
5274 /* If the direct address is present, then this report is from
5275 * a LE Direct Advertising Report event. In that case it is
5276 * important to see if the address is matching the local
5277 * controller address.
5278 */
5279 if (direct_addr) {
5280 /* Only resolvable random addresses are valid for these
5281 * kind of reports and others can be ignored.
5282 */
5283 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
5284 return;
5285
5286 /* If the controller is not using resolvable random
5287 * addresses, then this report can be ignored.
5288 */
5289 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
5290 return;
5291
5292 /* If the local IRK of the controller does not match
5293 * with the resolvable random address provided, then
5294 * this report can be ignored.
5295 */
5296 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
5297 return;
5298 }
5299
5300 /* Check if we need to convert to identity address */
5301 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
5302 if (irk) {
5303 bdaddr = &irk->bdaddr;
5304 bdaddr_type = irk->addr_type;
5305 }
5306
5307 /* Check if we have been requested to connect to this device.
5308 *
5309 * direct_addr is set only for directed advertising reports (it is NULL
5310 * for advertising reports) and is already verified to be RPA above.
5311 */
5312 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type,
5313 direct_addr);
5314 if (conn && type == LE_ADV_IND) {
5315 /* Store report for later inclusion by
5316 * mgmt_device_connected
5317 */
5318 memcpy(conn->le_adv_data, data, len);
5319 conn->le_adv_data_len = len;
5320 }
5321
5322 /* Passive scanning shouldn't trigger any device found events,
5323 * except for devices marked as CONN_REPORT for which we do send
5324 * device found events.
5325 */
5326 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
5327 if (type == LE_ADV_DIRECT_IND)
5328 return;
5329
5330 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
5331 bdaddr, bdaddr_type))
5332 return;
5333
5334 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
5335 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
5336 else
5337 flags = 0;
5338 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
5339 rssi, flags, data, len, NULL, 0);
5340 return;
5341 }
5342
5343 /* When receiving non-connectable or scannable undirected
5344 * advertising reports, this means that the remote device is
5345 * not connectable and then clearly indicate this in the
5346 * device found event.
5347 *
5348 * When receiving a scan response, then there is no way to
5349 * know if the remote device is connectable or not. However
5350 * since scan responses are merged with a previously seen
5351 * advertising report, the flags field from that report
5352 * will be used.
5353 *
5354 * In the really unlikely case that a controller get confused
5355 * and just sends a scan response event, then it is marked as
5356 * not connectable as well.
5357 */
5358 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
5359 type == LE_ADV_SCAN_RSP)
5360 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
5361 else
5362 flags = 0;
5363
5364 /* If there's nothing pending either store the data from this
5365 * event or send an immediate device found event if the data
5366 * should not be stored for later.
5367 */
5368 if (!has_pending_adv_report(hdev)) {
5369 /* If the report will trigger a SCAN_REQ store it for
5370 * later merging.
5371 */
5372 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
5373 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
5374 rssi, flags, data, len);
5375 return;
5376 }
5377
5378 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
5379 rssi, flags, data, len, NULL, 0);
5380 return;
5381 }
5382
5383 /* Check if the pending report is for the same device as the new one */
5384 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
5385 bdaddr_type == d->last_adv_addr_type);
5386
5387 /* If the pending data doesn't match this report or this isn't a
5388 * scan response (e.g. we got a duplicate ADV_IND) then force
5389 * sending of the pending data.
5390 */
5391 if (type != LE_ADV_SCAN_RSP || !match) {
5392 /* Send out whatever is in the cache, but skip duplicates */
5393 if (!match)
5394 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
5395 d->last_adv_addr_type, NULL,
5396 d->last_adv_rssi, d->last_adv_flags,
5397 d->last_adv_data,
5398 d->last_adv_data_len, NULL, 0);
5399
5400 /* If the new report will trigger a SCAN_REQ store it for
5401 * later merging.
5402 */
5403 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
5404 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
5405 rssi, flags, data, len);
5406 return;
5407 }
5408
5409 /* The advertising reports cannot be merged, so clear
5410 * the pending report and send out a device found event.
5411 */
5412 clear_pending_adv_report(hdev);
5413 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
5414 rssi, flags, data, len, NULL, 0);
5415 return;
5416 }
5417
5418 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
5419 * the new event is a SCAN_RSP. We can therefore proceed with
5420 * sending a merged device found event.
5421 */
5422 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
5423 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
5424 d->last_adv_data, d->last_adv_data_len, data, len);
5425 clear_pending_adv_report(hdev);
5426 }
5427
5428 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
5429 {
5430 u8 num_reports = skb->data[0];
5431 void *ptr = &skb->data[1];
5432
5433 hci_dev_lock(hdev);
5434
5435 while (num_reports--) {
5436 struct hci_ev_le_advertising_info *ev = ptr;
5437 s8 rssi;
5438
5439 if (ev->length <= HCI_MAX_AD_LENGTH) {
5440 rssi = ev->data[ev->length];
5441 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5442 ev->bdaddr_type, NULL, 0, rssi,
5443 ev->data, ev->length);
5444 } else {
5445 bt_dev_err(hdev, "Dropping invalid advertising data");
5446 }
5447
5448 ptr += sizeof(*ev) + ev->length + 1;
5449 }
5450
5451 hci_dev_unlock(hdev);
5452 }
5453
5454 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
5455 {
5456 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
5457 switch (evt_type) {
5458 case LE_LEGACY_ADV_IND:
5459 return LE_ADV_IND;
5460 case LE_LEGACY_ADV_DIRECT_IND:
5461 return LE_ADV_DIRECT_IND;
5462 case LE_LEGACY_ADV_SCAN_IND:
5463 return LE_ADV_SCAN_IND;
5464 case LE_LEGACY_NONCONN_IND:
5465 return LE_ADV_NONCONN_IND;
5466 case LE_LEGACY_SCAN_RSP_ADV:
5467 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
5468 return LE_ADV_SCAN_RSP;
5469 }
5470
5471 goto invalid;
5472 }
5473
5474 if (evt_type & LE_EXT_ADV_CONN_IND) {
5475 if (evt_type & LE_EXT_ADV_DIRECT_IND)
5476 return LE_ADV_DIRECT_IND;
5477
5478 return LE_ADV_IND;
5479 }
5480
5481 if (evt_type & LE_EXT_ADV_SCAN_RSP)
5482 return LE_ADV_SCAN_RSP;
5483
5484 if (evt_type & LE_EXT_ADV_SCAN_IND)
5485 return LE_ADV_SCAN_IND;
5486
5487 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
5488 evt_type & LE_EXT_ADV_DIRECT_IND)
5489 return LE_ADV_NONCONN_IND;
5490
5491 invalid:
5492 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
5493 evt_type);
5494
5495 return LE_ADV_INVALID;
5496 }
5497
5498 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
5499 {
5500 u8 num_reports = skb->data[0];
5501 void *ptr = &skb->data[1];
5502
5503 hci_dev_lock(hdev);
5504
5505 while (num_reports--) {
5506 struct hci_ev_le_ext_adv_report *ev = ptr;
5507 u8 legacy_evt_type;
5508 u16 evt_type;
5509
5510 evt_type = __le16_to_cpu(ev->evt_type);
5511 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
5512 if (legacy_evt_type != LE_ADV_INVALID) {
5513 process_adv_report(hdev, legacy_evt_type, &ev->bdaddr,
5514 ev->bdaddr_type, NULL, 0, ev->rssi,
5515 ev->data, ev->length);
5516 }
5517
5518 ptr += sizeof(*ev) + ev->length;
5519 }
5520
5521 hci_dev_unlock(hdev);
5522 }
5523
5524 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
5525 struct sk_buff *skb)
5526 {
5527 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
5528 struct hci_conn *conn;
5529
5530 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5531
5532 hci_dev_lock(hdev);
5533
5534 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5535 if (conn) {
5536 if (!ev->status)
5537 memcpy(conn->features[0], ev->features, 8);
5538
5539 if (conn->state == BT_CONFIG) {
5540 __u8 status;
5541
5542 /* If the local controller supports slave-initiated
5543 * features exchange, but the remote controller does
5544 * not, then it is possible that the error code 0x1a
5545 * for unsupported remote feature gets returned.
5546 *
5547 * In this specific case, allow the connection to
5548 * transition into connected state and mark it as
5549 * successful.
5550 */
5551 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
5552 !conn->out && ev->status == 0x1a)
5553 status = 0x00;
5554 else
5555 status = ev->status;
5556
5557 conn->state = BT_CONNECTED;
5558 hci_connect_cfm(conn, status);
5559 hci_conn_drop(conn);
5560 }
5561 }
5562
5563 hci_dev_unlock(hdev);
5564 }
5565
5566 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
5567 {
5568 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
5569 struct hci_cp_le_ltk_reply cp;
5570 struct hci_cp_le_ltk_neg_reply neg;
5571 struct hci_conn *conn;
5572 struct smp_ltk *ltk;
5573
5574 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
5575
5576 hci_dev_lock(hdev);
5577
5578 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5579 if (conn == NULL)
5580 goto not_found;
5581
5582 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
5583 if (!ltk)
5584 goto not_found;
5585
5586 if (smp_ltk_is_sc(ltk)) {
5587 /* With SC both EDiv and Rand are set to zero */
5588 if (ev->ediv || ev->rand)
5589 goto not_found;
5590 } else {
5591 /* For non-SC keys check that EDiv and Rand match */
5592 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
5593 goto not_found;
5594 }
5595
5596 memcpy(cp.ltk, ltk->val, ltk->enc_size);
5597 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
5598 cp.handle = cpu_to_le16(conn->handle);
5599
5600 conn->pending_sec_level = smp_ltk_sec_level(ltk);
5601
5602 conn->enc_key_size = ltk->enc_size;
5603
5604 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
5605
5606 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
5607 * temporary key used to encrypt a connection following
5608 * pairing. It is used during the Encrypted Session Setup to
5609 * distribute the keys. Later, security can be re-established
5610 * using a distributed LTK.
5611 */
5612 if (ltk->type == SMP_STK) {
5613 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5614 list_del_rcu(&ltk->list);
5615 kfree_rcu(ltk, rcu);
5616 } else {
5617 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5618 }
5619
5620 hci_dev_unlock(hdev);
5621
5622 return;
5623
5624 not_found:
5625 neg.handle = ev->handle;
5626 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
5627 hci_dev_unlock(hdev);
5628 }
5629
5630 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
5631 u8 reason)
5632 {
5633 struct hci_cp_le_conn_param_req_neg_reply cp;
5634
5635 cp.handle = cpu_to_le16(handle);
5636 cp.reason = reason;
5637
5638 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
5639 &cp);
5640 }
5641
5642 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
5643 struct sk_buff *skb)
5644 {
5645 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
5646 struct hci_cp_le_conn_param_req_reply cp;
5647 struct hci_conn *hcon;
5648 u16 handle, min, max, latency, timeout;
5649
5650 handle = le16_to_cpu(ev->handle);
5651 min = le16_to_cpu(ev->interval_min);
5652 max = le16_to_cpu(ev->interval_max);
5653 latency = le16_to_cpu(ev->latency);
5654 timeout = le16_to_cpu(ev->timeout);
5655
5656 hcon = hci_conn_hash_lookup_handle(hdev, handle);
5657 if (!hcon || hcon->state != BT_CONNECTED)
5658 return send_conn_param_neg_reply(hdev, handle,
5659 HCI_ERROR_UNKNOWN_CONN_ID);
5660
5661 if (hci_check_conn_params(min, max, latency, timeout))
5662 return send_conn_param_neg_reply(hdev, handle,
5663 HCI_ERROR_INVALID_LL_PARAMS);
5664
5665 if (hcon->role == HCI_ROLE_MASTER) {
5666 struct hci_conn_params *params;
5667 u8 store_hint;
5668
5669 hci_dev_lock(hdev);
5670
5671 params = hci_conn_params_lookup(hdev, &hcon->dst,
5672 hcon->dst_type);
5673 if (params) {
5674 params->conn_min_interval = min;
5675 params->conn_max_interval = max;
5676 params->conn_latency = latency;
5677 params->supervision_timeout = timeout;
5678 store_hint = 0x01;
5679 } else{
5680 store_hint = 0x00;
5681 }
5682
5683 hci_dev_unlock(hdev);
5684
5685 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
5686 store_hint, min, max, latency, timeout);
5687 }
5688
5689 cp.handle = ev->handle;
5690 cp.interval_min = ev->interval_min;
5691 cp.interval_max = ev->interval_max;
5692 cp.latency = ev->latency;
5693 cp.timeout = ev->timeout;
5694 cp.min_ce_len = 0;
5695 cp.max_ce_len = 0;
5696
5697 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
5698 }
5699
5700 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
5701 struct sk_buff *skb)
5702 {
5703 u8 num_reports = skb->data[0];
5704 void *ptr = &skb->data[1];
5705
5706 hci_dev_lock(hdev);
5707
5708 while (num_reports--) {
5709 struct hci_ev_le_direct_adv_info *ev = ptr;
5710
5711 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
5712 ev->bdaddr_type, &ev->direct_addr,
5713 ev->direct_addr_type, ev->rssi, NULL, 0);
5714
5715 ptr += sizeof(*ev);
5716 }
5717
5718 hci_dev_unlock(hdev);
5719 }
5720
5721 static void hci_le_phy_update_evt(struct hci_dev *hdev, struct sk_buff *skb)
5722 {
5723 struct hci_ev_le_phy_update_complete *ev = (void *) skb->data;
5724 struct hci_conn *conn;
5725
5726 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
5727
5728 if (!ev->status)
5729 return;
5730
5731 hci_dev_lock(hdev);
5732
5733 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5734 if (!conn)
5735 goto unlock;
5736
5737 conn->le_tx_phy = ev->tx_phy;
5738 conn->le_rx_phy = ev->rx_phy;
5739
5740 unlock:
5741 hci_dev_unlock(hdev);
5742 }
5743
5744 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
5745 {
5746 struct hci_ev_le_meta *le_ev = (void *) skb->data;
5747
5748 skb_pull(skb, sizeof(*le_ev));
5749
5750 switch (le_ev->subevent) {
5751 case HCI_EV_LE_CONN_COMPLETE:
5752 hci_le_conn_complete_evt(hdev, skb);
5753 break;
5754
5755 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
5756 hci_le_conn_update_complete_evt(hdev, skb);
5757 break;
5758
5759 case HCI_EV_LE_ADVERTISING_REPORT:
5760 hci_le_adv_report_evt(hdev, skb);
5761 break;
5762
5763 case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
5764 hci_le_remote_feat_complete_evt(hdev, skb);
5765 break;
5766
5767 case HCI_EV_LE_LTK_REQ:
5768 hci_le_ltk_request_evt(hdev, skb);
5769 break;
5770
5771 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
5772 hci_le_remote_conn_param_req_evt(hdev, skb);
5773 break;
5774
5775 case HCI_EV_LE_DIRECT_ADV_REPORT:
5776 hci_le_direct_adv_report_evt(hdev, skb);
5777 break;
5778
5779 case HCI_EV_LE_PHY_UPDATE_COMPLETE:
5780 hci_le_phy_update_evt(hdev, skb);
5781 break;
5782
5783 case HCI_EV_LE_EXT_ADV_REPORT:
5784 hci_le_ext_adv_report_evt(hdev, skb);
5785 break;
5786
5787 case HCI_EV_LE_ENHANCED_CONN_COMPLETE:
5788 hci_le_enh_conn_complete_evt(hdev, skb);
5789 break;
5790
5791 case HCI_EV_LE_EXT_ADV_SET_TERM:
5792 hci_le_ext_adv_term_evt(hdev, skb);
5793 break;
5794
5795 default:
5796 break;
5797 }
5798 }
5799
5800 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
5801 u8 event, struct sk_buff *skb)
5802 {
5803 struct hci_ev_cmd_complete *ev;
5804 struct hci_event_hdr *hdr;
5805
5806 if (!skb)
5807 return false;
5808
5809 if (skb->len < sizeof(*hdr)) {
5810 bt_dev_err(hdev, "too short HCI event");
5811 return false;
5812 }
5813
5814 hdr = (void *) skb->data;
5815 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5816
5817 if (event) {
5818 if (hdr->evt != event)
5819 return false;
5820 return true;
5821 }
5822
5823 /* Check if request ended in Command Status - no way to retreive
5824 * any extra parameters in this case.
5825 */
5826 if (hdr->evt == HCI_EV_CMD_STATUS)
5827 return false;
5828
5829 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
5830 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
5831 hdr->evt);
5832 return false;
5833 }
5834
5835 if (skb->len < sizeof(*ev)) {
5836 bt_dev_err(hdev, "too short cmd_complete event");
5837 return false;
5838 }
5839
5840 ev = (void *) skb->data;
5841 skb_pull(skb, sizeof(*ev));
5842
5843 if (opcode != __le16_to_cpu(ev->opcode)) {
5844 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
5845 __le16_to_cpu(ev->opcode));
5846 return false;
5847 }
5848
5849 return true;
5850 }
5851
5852 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
5853 {
5854 struct hci_event_hdr *hdr = (void *) skb->data;
5855 hci_req_complete_t req_complete = NULL;
5856 hci_req_complete_skb_t req_complete_skb = NULL;
5857 struct sk_buff *orig_skb = NULL;
5858 u8 status = 0, event = hdr->evt, req_evt = 0;
5859 u16 opcode = HCI_OP_NOP;
5860
5861 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) {
5862 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
5863 opcode = __le16_to_cpu(cmd_hdr->opcode);
5864 hci_req_cmd_complete(hdev, opcode, status, &req_complete,
5865 &req_complete_skb);
5866 req_evt = event;
5867 }
5868
5869 /* If it looks like we might end up having to call
5870 * req_complete_skb, store a pristine copy of the skb since the
5871 * various handlers may modify the original one through
5872 * skb_pull() calls, etc.
5873 */
5874 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
5875 event == HCI_EV_CMD_COMPLETE)
5876 orig_skb = skb_clone(skb, GFP_KERNEL);
5877
5878 skb_pull(skb, HCI_EVENT_HDR_SIZE);
5879
5880 switch (event) {
5881 case HCI_EV_INQUIRY_COMPLETE:
5882 hci_inquiry_complete_evt(hdev, skb);
5883 break;
5884
5885 case HCI_EV_INQUIRY_RESULT:
5886 hci_inquiry_result_evt(hdev, skb);
5887 break;
5888
5889 case HCI_EV_CONN_COMPLETE:
5890 hci_conn_complete_evt(hdev, skb);
5891 break;
5892
5893 case HCI_EV_CONN_REQUEST:
5894 hci_conn_request_evt(hdev, skb);
5895 break;
5896
5897 case HCI_EV_DISCONN_COMPLETE:
5898 hci_disconn_complete_evt(hdev, skb);
5899 break;
5900
5901 case HCI_EV_AUTH_COMPLETE:
5902 hci_auth_complete_evt(hdev, skb);
5903 break;
5904
5905 case HCI_EV_REMOTE_NAME:
5906 hci_remote_name_evt(hdev, skb);
5907 break;
5908
5909 case HCI_EV_ENCRYPT_CHANGE:
5910 hci_encrypt_change_evt(hdev, skb);
5911 break;
5912
5913 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
5914 hci_change_link_key_complete_evt(hdev, skb);
5915 break;
5916
5917 case HCI_EV_REMOTE_FEATURES:
5918 hci_remote_features_evt(hdev, skb);
5919 break;
5920
5921 case HCI_EV_CMD_COMPLETE:
5922 hci_cmd_complete_evt(hdev, skb, &opcode, &status,
5923 &req_complete, &req_complete_skb);
5924 break;
5925
5926 case HCI_EV_CMD_STATUS:
5927 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
5928 &req_complete_skb);
5929 break;
5930
5931 case HCI_EV_HARDWARE_ERROR:
5932 hci_hardware_error_evt(hdev, skb);
5933 break;
5934
5935 case HCI_EV_ROLE_CHANGE:
5936 hci_role_change_evt(hdev, skb);
5937 break;
5938
5939 case HCI_EV_NUM_COMP_PKTS:
5940 hci_num_comp_pkts_evt(hdev, skb);
5941 break;
5942
5943 case HCI_EV_MODE_CHANGE:
5944 hci_mode_change_evt(hdev, skb);
5945 break;
5946
5947 case HCI_EV_PIN_CODE_REQ:
5948 hci_pin_code_request_evt(hdev, skb);
5949 break;
5950
5951 case HCI_EV_LINK_KEY_REQ:
5952 hci_link_key_request_evt(hdev, skb);
5953 break;
5954
5955 case HCI_EV_LINK_KEY_NOTIFY:
5956 hci_link_key_notify_evt(hdev, skb);
5957 break;
5958
5959 case HCI_EV_CLOCK_OFFSET:
5960 hci_clock_offset_evt(hdev, skb);
5961 break;
5962
5963 case HCI_EV_PKT_TYPE_CHANGE:
5964 hci_pkt_type_change_evt(hdev, skb);
5965 break;
5966
5967 case HCI_EV_PSCAN_REP_MODE:
5968 hci_pscan_rep_mode_evt(hdev, skb);
5969 break;
5970
5971 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
5972 hci_inquiry_result_with_rssi_evt(hdev, skb);
5973 break;
5974
5975 case HCI_EV_REMOTE_EXT_FEATURES:
5976 hci_remote_ext_features_evt(hdev, skb);
5977 break;
5978
5979 case HCI_EV_SYNC_CONN_COMPLETE:
5980 hci_sync_conn_complete_evt(hdev, skb);
5981 break;
5982
5983 case HCI_EV_EXTENDED_INQUIRY_RESULT:
5984 hci_extended_inquiry_result_evt(hdev, skb);
5985 break;
5986
5987 case HCI_EV_KEY_REFRESH_COMPLETE:
5988 hci_key_refresh_complete_evt(hdev, skb);
5989 break;
5990
5991 case HCI_EV_IO_CAPA_REQUEST:
5992 hci_io_capa_request_evt(hdev, skb);
5993 break;
5994
5995 case HCI_EV_IO_CAPA_REPLY:
5996 hci_io_capa_reply_evt(hdev, skb);
5997 break;
5998
5999 case HCI_EV_USER_CONFIRM_REQUEST:
6000 hci_user_confirm_request_evt(hdev, skb);
6001 break;
6002
6003 case HCI_EV_USER_PASSKEY_REQUEST:
6004 hci_user_passkey_request_evt(hdev, skb);
6005 break;
6006
6007 case HCI_EV_USER_PASSKEY_NOTIFY:
6008 hci_user_passkey_notify_evt(hdev, skb);
6009 break;
6010
6011 case HCI_EV_KEYPRESS_NOTIFY:
6012 hci_keypress_notify_evt(hdev, skb);
6013 break;
6014
6015 case HCI_EV_SIMPLE_PAIR_COMPLETE:
6016 hci_simple_pair_complete_evt(hdev, skb);
6017 break;
6018
6019 case HCI_EV_REMOTE_HOST_FEATURES:
6020 hci_remote_host_features_evt(hdev, skb);
6021 break;
6022
6023 case HCI_EV_LE_META:
6024 hci_le_meta_evt(hdev, skb);
6025 break;
6026
6027 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
6028 hci_remote_oob_data_request_evt(hdev, skb);
6029 break;
6030
6031 #if IS_ENABLED(CONFIG_BT_HS)
6032 case HCI_EV_CHANNEL_SELECTED:
6033 hci_chan_selected_evt(hdev, skb);
6034 break;
6035
6036 case HCI_EV_PHY_LINK_COMPLETE:
6037 hci_phy_link_complete_evt(hdev, skb);
6038 break;
6039
6040 case HCI_EV_LOGICAL_LINK_COMPLETE:
6041 hci_loglink_complete_evt(hdev, skb);
6042 break;
6043
6044 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
6045 hci_disconn_loglink_complete_evt(hdev, skb);
6046 break;
6047
6048 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
6049 hci_disconn_phylink_complete_evt(hdev, skb);
6050 break;
6051 #endif
6052
6053 case HCI_EV_NUM_COMP_BLOCKS:
6054 hci_num_comp_blocks_evt(hdev, skb);
6055 break;
6056
6057 default:
6058 BT_DBG("%s event 0x%2.2x", hdev->name, event);
6059 break;
6060 }
6061
6062 if (req_complete) {
6063 req_complete(hdev, status, opcode);
6064 } else if (req_complete_skb) {
6065 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
6066 kfree_skb(orig_skb);
6067 orig_skb = NULL;
6068 }
6069 req_complete_skb(hdev, status, opcode, orig_skb);
6070 }
6071
6072 kfree_skb(orig_skb);
6073 kfree_skb(skb);
6074 hdev->stat.evt_rx++;
6075 }
Linux with added FPC-III support