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Bluetooth: Convert Set SC to use HCI Request
[deliverable/linux.git] / net / bluetooth / hci_event.c
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /* Bluetooth HCI event handling. */
26
27 #include <asm/unaligned.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31 #include <net/bluetooth/mgmt.h>
32
33 #include "hci_request.h"
34 #include "hci_debugfs.h"
35 #include "a2mp.h"
36 #include "amp.h"
37 #include "smp.h"
38
39 /* Handle HCI Event packets */
40
41 static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
42 {
43 __u8 status = *((__u8 *) skb->data);
44
45 BT_DBG("%s status 0x%2.2x", hdev->name, status);
46
47 if (status)
48 return;
49
50 clear_bit(HCI_INQUIRY, &hdev->flags);
51 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
52 wake_up_bit(&hdev->flags, HCI_INQUIRY);
53
54 hci_dev_lock(hdev);
55 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
56 hci_dev_unlock(hdev);
57
58 hci_conn_check_pending(hdev);
59 }
60
61 static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
62 {
63 __u8 status = *((__u8 *) skb->data);
64
65 BT_DBG("%s status 0x%2.2x", hdev->name, status);
66
67 if (status)
68 return;
69
70 set_bit(HCI_PERIODIC_INQ, &hdev->dev_flags);
71 }
72
73 static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
74 {
75 __u8 status = *((__u8 *) skb->data);
76
77 BT_DBG("%s status 0x%2.2x", hdev->name, status);
78
79 if (status)
80 return;
81
82 clear_bit(HCI_PERIODIC_INQ, &hdev->dev_flags);
83
84 hci_conn_check_pending(hdev);
85 }
86
87 static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
88 struct sk_buff *skb)
89 {
90 BT_DBG("%s", hdev->name);
91 }
92
93 static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
94 {
95 struct hci_rp_role_discovery *rp = (void *) skb->data;
96 struct hci_conn *conn;
97
98 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
99
100 if (rp->status)
101 return;
102
103 hci_dev_lock(hdev);
104
105 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
106 if (conn)
107 conn->role = rp->role;
108
109 hci_dev_unlock(hdev);
110 }
111
112 static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
113 {
114 struct hci_rp_read_link_policy *rp = (void *) skb->data;
115 struct hci_conn *conn;
116
117 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
118
119 if (rp->status)
120 return;
121
122 hci_dev_lock(hdev);
123
124 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
125 if (conn)
126 conn->link_policy = __le16_to_cpu(rp->policy);
127
128 hci_dev_unlock(hdev);
129 }
130
131 static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
132 {
133 struct hci_rp_write_link_policy *rp = (void *) skb->data;
134 struct hci_conn *conn;
135 void *sent;
136
137 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
138
139 if (rp->status)
140 return;
141
142 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
143 if (!sent)
144 return;
145
146 hci_dev_lock(hdev);
147
148 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
149 if (conn)
150 conn->link_policy = get_unaligned_le16(sent + 2);
151
152 hci_dev_unlock(hdev);
153 }
154
155 static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
156 struct sk_buff *skb)
157 {
158 struct hci_rp_read_def_link_policy *rp = (void *) skb->data;
159
160 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
161
162 if (rp->status)
163 return;
164
165 hdev->link_policy = __le16_to_cpu(rp->policy);
166 }
167
168 static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
169 struct sk_buff *skb)
170 {
171 __u8 status = *((__u8 *) skb->data);
172 void *sent;
173
174 BT_DBG("%s status 0x%2.2x", hdev->name, status);
175
176 if (status)
177 return;
178
179 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
180 if (!sent)
181 return;
182
183 hdev->link_policy = get_unaligned_le16(sent);
184 }
185
186 static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
187 {
188 __u8 status = *((__u8 *) skb->data);
189
190 BT_DBG("%s status 0x%2.2x", hdev->name, status);
191
192 clear_bit(HCI_RESET, &hdev->flags);
193
194 if (status)
195 return;
196
197 /* Reset all non-persistent flags */
198 hdev->dev_flags &= ~HCI_PERSISTENT_MASK;
199
200 hdev->discovery.state = DISCOVERY_STOPPED;
201 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
202 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
203
204 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
205 hdev->adv_data_len = 0;
206
207 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
208 hdev->scan_rsp_data_len = 0;
209
210 hdev->le_scan_type = LE_SCAN_PASSIVE;
211
212 hdev->ssp_debug_mode = 0;
213
214 hci_bdaddr_list_clear(&hdev->le_white_list);
215 }
216
217 static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
218 struct sk_buff *skb)
219 {
220 struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
221 struct hci_cp_read_stored_link_key *sent;
222
223 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
224
225 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
226 if (!sent)
227 return;
228
229 if (!rp->status && sent->read_all == 0x01) {
230 hdev->stored_max_keys = rp->max_keys;
231 hdev->stored_num_keys = rp->num_keys;
232 }
233 }
234
235 static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
236 struct sk_buff *skb)
237 {
238 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;
239
240 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
241
242 if (rp->status)
243 return;
244
245 if (rp->num_keys <= hdev->stored_num_keys)
246 hdev->stored_num_keys -= rp->num_keys;
247 else
248 hdev->stored_num_keys = 0;
249 }
250
251 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
252 {
253 __u8 status = *((__u8 *) skb->data);
254 void *sent;
255
256 BT_DBG("%s status 0x%2.2x", hdev->name, status);
257
258 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
259 if (!sent)
260 return;
261
262 hci_dev_lock(hdev);
263
264 if (test_bit(HCI_MGMT, &hdev->dev_flags))
265 mgmt_set_local_name_complete(hdev, sent, status);
266 else if (!status)
267 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
268
269 hci_dev_unlock(hdev);
270 }
271
272 static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
273 {
274 struct hci_rp_read_local_name *rp = (void *) skb->data;
275
276 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
277
278 if (rp->status)
279 return;
280
281 if (test_bit(HCI_SETUP, &hdev->dev_flags) ||
282 test_bit(HCI_CONFIG, &hdev->dev_flags))
283 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
284 }
285
286 static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
287 {
288 __u8 status = *((__u8 *) skb->data);
289 void *sent;
290
291 BT_DBG("%s status 0x%2.2x", hdev->name, status);
292
293 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
294 if (!sent)
295 return;
296
297 hci_dev_lock(hdev);
298
299 if (!status) {
300 __u8 param = *((__u8 *) sent);
301
302 if (param == AUTH_ENABLED)
303 set_bit(HCI_AUTH, &hdev->flags);
304 else
305 clear_bit(HCI_AUTH, &hdev->flags);
306 }
307
308 if (test_bit(HCI_MGMT, &hdev->dev_flags))
309 mgmt_auth_enable_complete(hdev, status);
310
311 hci_dev_unlock(hdev);
312 }
313
314 static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
315 {
316 __u8 status = *((__u8 *) skb->data);
317 __u8 param;
318 void *sent;
319
320 BT_DBG("%s status 0x%2.2x", hdev->name, status);
321
322 if (status)
323 return;
324
325 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
326 if (!sent)
327 return;
328
329 param = *((__u8 *) sent);
330
331 if (param)
332 set_bit(HCI_ENCRYPT, &hdev->flags);
333 else
334 clear_bit(HCI_ENCRYPT, &hdev->flags);
335 }
336
337 static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
338 {
339 __u8 status = *((__u8 *) skb->data);
340 __u8 param;
341 void *sent;
342
343 BT_DBG("%s status 0x%2.2x", hdev->name, status);
344
345 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
346 if (!sent)
347 return;
348
349 param = *((__u8 *) sent);
350
351 hci_dev_lock(hdev);
352
353 if (status) {
354 hdev->discov_timeout = 0;
355 goto done;
356 }
357
358 if (param & SCAN_INQUIRY)
359 set_bit(HCI_ISCAN, &hdev->flags);
360 else
361 clear_bit(HCI_ISCAN, &hdev->flags);
362
363 if (param & SCAN_PAGE)
364 set_bit(HCI_PSCAN, &hdev->flags);
365 else
366 clear_bit(HCI_PSCAN, &hdev->flags);
367
368 done:
369 hci_dev_unlock(hdev);
370 }
371
372 static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
373 {
374 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
375
376 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
377
378 if (rp->status)
379 return;
380
381 memcpy(hdev->dev_class, rp->dev_class, 3);
382
383 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
384 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
385 }
386
387 static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
388 {
389 __u8 status = *((__u8 *) skb->data);
390 void *sent;
391
392 BT_DBG("%s status 0x%2.2x", hdev->name, status);
393
394 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
395 if (!sent)
396 return;
397
398 hci_dev_lock(hdev);
399
400 if (status == 0)
401 memcpy(hdev->dev_class, sent, 3);
402
403 if (test_bit(HCI_MGMT, &hdev->dev_flags))
404 mgmt_set_class_of_dev_complete(hdev, sent, status);
405
406 hci_dev_unlock(hdev);
407 }
408
409 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
410 {
411 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
412 __u16 setting;
413
414 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
415
416 if (rp->status)
417 return;
418
419 setting = __le16_to_cpu(rp->voice_setting);
420
421 if (hdev->voice_setting == setting)
422 return;
423
424 hdev->voice_setting = setting;
425
426 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
427
428 if (hdev->notify)
429 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
430 }
431
432 static void hci_cc_write_voice_setting(struct hci_dev *hdev,
433 struct sk_buff *skb)
434 {
435 __u8 status = *((__u8 *) skb->data);
436 __u16 setting;
437 void *sent;
438
439 BT_DBG("%s status 0x%2.2x", hdev->name, status);
440
441 if (status)
442 return;
443
444 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
445 if (!sent)
446 return;
447
448 setting = get_unaligned_le16(sent);
449
450 if (hdev->voice_setting == setting)
451 return;
452
453 hdev->voice_setting = setting;
454
455 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
456
457 if (hdev->notify)
458 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
459 }
460
461 static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
462 struct sk_buff *skb)
463 {
464 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
465
466 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
467
468 if (rp->status)
469 return;
470
471 hdev->num_iac = rp->num_iac;
472
473 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
474 }
475
476 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
477 {
478 __u8 status = *((__u8 *) skb->data);
479 struct hci_cp_write_ssp_mode *sent;
480
481 BT_DBG("%s status 0x%2.2x", hdev->name, status);
482
483 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
484 if (!sent)
485 return;
486
487 hci_dev_lock(hdev);
488
489 if (!status) {
490 if (sent->mode)
491 hdev->features[1][0] |= LMP_HOST_SSP;
492 else
493 hdev->features[1][0] &= ~LMP_HOST_SSP;
494 }
495
496 if (test_bit(HCI_MGMT, &hdev->dev_flags))
497 mgmt_ssp_enable_complete(hdev, sent->mode, status);
498 else if (!status) {
499 if (sent->mode)
500 set_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
501 else
502 clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
503 }
504
505 hci_dev_unlock(hdev);
506 }
507
508 static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
509 {
510 u8 status = *((u8 *) skb->data);
511 struct hci_cp_write_sc_support *sent;
512
513 BT_DBG("%s status 0x%2.2x", hdev->name, status);
514
515 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
516 if (!sent)
517 return;
518
519 hci_dev_lock(hdev);
520
521 if (!status) {
522 if (sent->support)
523 hdev->features[1][0] |= LMP_HOST_SC;
524 else
525 hdev->features[1][0] &= ~LMP_HOST_SC;
526 }
527
528 if (!test_bit(HCI_MGMT, &hdev->dev_flags) && !status) {
529 if (sent->support)
530 set_bit(HCI_SC_ENABLED, &hdev->dev_flags);
531 else
532 clear_bit(HCI_SC_ENABLED, &hdev->dev_flags);
533 }
534
535 hci_dev_unlock(hdev);
536 }
537
538 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
539 {
540 struct hci_rp_read_local_version *rp = (void *) skb->data;
541
542 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
543
544 if (rp->status)
545 return;
546
547 if (test_bit(HCI_SETUP, &hdev->dev_flags) ||
548 test_bit(HCI_CONFIG, &hdev->dev_flags)) {
549 hdev->hci_ver = rp->hci_ver;
550 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
551 hdev->lmp_ver = rp->lmp_ver;
552 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
553 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
554 }
555 }
556
557 static void hci_cc_read_local_commands(struct hci_dev *hdev,
558 struct sk_buff *skb)
559 {
560 struct hci_rp_read_local_commands *rp = (void *) skb->data;
561
562 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
563
564 if (rp->status)
565 return;
566
567 if (test_bit(HCI_SETUP, &hdev->dev_flags) ||
568 test_bit(HCI_CONFIG, &hdev->dev_flags))
569 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
570 }
571
572 static void hci_cc_read_local_features(struct hci_dev *hdev,
573 struct sk_buff *skb)
574 {
575 struct hci_rp_read_local_features *rp = (void *) skb->data;
576
577 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
578
579 if (rp->status)
580 return;
581
582 memcpy(hdev->features, rp->features, 8);
583
584 /* Adjust default settings according to features
585 * supported by device. */
586
587 if (hdev->features[0][0] & LMP_3SLOT)
588 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
589
590 if (hdev->features[0][0] & LMP_5SLOT)
591 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
592
593 if (hdev->features[0][1] & LMP_HV2) {
594 hdev->pkt_type |= (HCI_HV2);
595 hdev->esco_type |= (ESCO_HV2);
596 }
597
598 if (hdev->features[0][1] & LMP_HV3) {
599 hdev->pkt_type |= (HCI_HV3);
600 hdev->esco_type |= (ESCO_HV3);
601 }
602
603 if (lmp_esco_capable(hdev))
604 hdev->esco_type |= (ESCO_EV3);
605
606 if (hdev->features[0][4] & LMP_EV4)
607 hdev->esco_type |= (ESCO_EV4);
608
609 if (hdev->features[0][4] & LMP_EV5)
610 hdev->esco_type |= (ESCO_EV5);
611
612 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
613 hdev->esco_type |= (ESCO_2EV3);
614
615 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
616 hdev->esco_type |= (ESCO_3EV3);
617
618 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
619 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
620 }
621
622 static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
623 struct sk_buff *skb)
624 {
625 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
626
627 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
628
629 if (rp->status)
630 return;
631
632 if (hdev->max_page < rp->max_page)
633 hdev->max_page = rp->max_page;
634
635 if (rp->page < HCI_MAX_PAGES)
636 memcpy(hdev->features[rp->page], rp->features, 8);
637 }
638
639 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
640 struct sk_buff *skb)
641 {
642 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
643
644 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
645
646 if (rp->status)
647 return;
648
649 hdev->flow_ctl_mode = rp->mode;
650 }
651
652 static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
653 {
654 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
655
656 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
657
658 if (rp->status)
659 return;
660
661 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
662 hdev->sco_mtu = rp->sco_mtu;
663 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
664 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
665
666 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
667 hdev->sco_mtu = 64;
668 hdev->sco_pkts = 8;
669 }
670
671 hdev->acl_cnt = hdev->acl_pkts;
672 hdev->sco_cnt = hdev->sco_pkts;
673
674 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
675 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
676 }
677
678 static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
679 {
680 struct hci_rp_read_bd_addr *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 (test_bit(HCI_INIT, &hdev->flags))
688 bacpy(&hdev->bdaddr, &rp->bdaddr);
689
690 if (test_bit(HCI_SETUP, &hdev->dev_flags))
691 bacpy(&hdev->setup_addr, &rp->bdaddr);
692 }
693
694 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
695 struct sk_buff *skb)
696 {
697 struct hci_rp_read_page_scan_activity *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 if (test_bit(HCI_INIT, &hdev->flags)) {
705 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
706 hdev->page_scan_window = __le16_to_cpu(rp->window);
707 }
708 }
709
710 static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
711 struct sk_buff *skb)
712 {
713 u8 status = *((u8 *) skb->data);
714 struct hci_cp_write_page_scan_activity *sent;
715
716 BT_DBG("%s status 0x%2.2x", hdev->name, status);
717
718 if (status)
719 return;
720
721 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
722 if (!sent)
723 return;
724
725 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
726 hdev->page_scan_window = __le16_to_cpu(sent->window);
727 }
728
729 static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
730 struct sk_buff *skb)
731 {
732 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
733
734 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
735
736 if (rp->status)
737 return;
738
739 if (test_bit(HCI_INIT, &hdev->flags))
740 hdev->page_scan_type = rp->type;
741 }
742
743 static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
744 struct sk_buff *skb)
745 {
746 u8 status = *((u8 *) skb->data);
747 u8 *type;
748
749 BT_DBG("%s status 0x%2.2x", hdev->name, status);
750
751 if (status)
752 return;
753
754 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
755 if (type)
756 hdev->page_scan_type = *type;
757 }
758
759 static void hci_cc_read_data_block_size(struct hci_dev *hdev,
760 struct sk_buff *skb)
761 {
762 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
763
764 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
765
766 if (rp->status)
767 return;
768
769 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
770 hdev->block_len = __le16_to_cpu(rp->block_len);
771 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
772
773 hdev->block_cnt = hdev->num_blocks;
774
775 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
776 hdev->block_cnt, hdev->block_len);
777 }
778
779 static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
780 {
781 struct hci_rp_read_clock *rp = (void *) skb->data;
782 struct hci_cp_read_clock *cp;
783 struct hci_conn *conn;
784
785 BT_DBG("%s", hdev->name);
786
787 if (skb->len < sizeof(*rp))
788 return;
789
790 if (rp->status)
791 return;
792
793 hci_dev_lock(hdev);
794
795 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
796 if (!cp)
797 goto unlock;
798
799 if (cp->which == 0x00) {
800 hdev->clock = le32_to_cpu(rp->clock);
801 goto unlock;
802 }
803
804 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
805 if (conn) {
806 conn->clock = le32_to_cpu(rp->clock);
807 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
808 }
809
810 unlock:
811 hci_dev_unlock(hdev);
812 }
813
814 static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
815 struct sk_buff *skb)
816 {
817 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
818
819 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
820
821 if (rp->status)
822 goto a2mp_rsp;
823
824 hdev->amp_status = rp->amp_status;
825 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
826 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
827 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
828 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
829 hdev->amp_type = rp->amp_type;
830 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
831 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
832 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
833 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
834
835 a2mp_rsp:
836 a2mp_send_getinfo_rsp(hdev);
837 }
838
839 static void hci_cc_read_local_amp_assoc(struct hci_dev *hdev,
840 struct sk_buff *skb)
841 {
842 struct hci_rp_read_local_amp_assoc *rp = (void *) skb->data;
843 struct amp_assoc *assoc = &hdev->loc_assoc;
844 size_t rem_len, frag_len;
845
846 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
847
848 if (rp->status)
849 goto a2mp_rsp;
850
851 frag_len = skb->len - sizeof(*rp);
852 rem_len = __le16_to_cpu(rp->rem_len);
853
854 if (rem_len > frag_len) {
855 BT_DBG("frag_len %zu rem_len %zu", frag_len, rem_len);
856
857 memcpy(assoc->data + assoc->offset, rp->frag, frag_len);
858 assoc->offset += frag_len;
859
860 /* Read other fragments */
861 amp_read_loc_assoc_frag(hdev, rp->phy_handle);
862
863 return;
864 }
865
866 memcpy(assoc->data + assoc->offset, rp->frag, rem_len);
867 assoc->len = assoc->offset + rem_len;
868 assoc->offset = 0;
869
870 a2mp_rsp:
871 /* Send A2MP Rsp when all fragments are received */
872 a2mp_send_getampassoc_rsp(hdev, rp->status);
873 a2mp_send_create_phy_link_req(hdev, rp->status);
874 }
875
876 static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
877 struct sk_buff *skb)
878 {
879 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
880
881 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
882
883 if (rp->status)
884 return;
885
886 hdev->inq_tx_power = rp->tx_power;
887 }
888
889 static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
890 {
891 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
892 struct hci_cp_pin_code_reply *cp;
893 struct hci_conn *conn;
894
895 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
896
897 hci_dev_lock(hdev);
898
899 if (test_bit(HCI_MGMT, &hdev->dev_flags))
900 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
901
902 if (rp->status)
903 goto unlock;
904
905 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
906 if (!cp)
907 goto unlock;
908
909 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
910 if (conn)
911 conn->pin_length = cp->pin_len;
912
913 unlock:
914 hci_dev_unlock(hdev);
915 }
916
917 static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
918 {
919 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
920
921 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
922
923 hci_dev_lock(hdev);
924
925 if (test_bit(HCI_MGMT, &hdev->dev_flags))
926 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
927 rp->status);
928
929 hci_dev_unlock(hdev);
930 }
931
932 static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
933 struct sk_buff *skb)
934 {
935 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
936
937 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
938
939 if (rp->status)
940 return;
941
942 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
943 hdev->le_pkts = rp->le_max_pkt;
944
945 hdev->le_cnt = hdev->le_pkts;
946
947 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
948 }
949
950 static void hci_cc_le_read_local_features(struct hci_dev *hdev,
951 struct sk_buff *skb)
952 {
953 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
954
955 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
956
957 if (rp->status)
958 return;
959
960 memcpy(hdev->le_features, rp->features, 8);
961 }
962
963 static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
964 struct sk_buff *skb)
965 {
966 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
967
968 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
969
970 if (rp->status)
971 return;
972
973 hdev->adv_tx_power = rp->tx_power;
974 }
975
976 static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
977 {
978 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
979
980 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
981
982 hci_dev_lock(hdev);
983
984 if (test_bit(HCI_MGMT, &hdev->dev_flags))
985 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
986 rp->status);
987
988 hci_dev_unlock(hdev);
989 }
990
991 static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
992 struct sk_buff *skb)
993 {
994 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
995
996 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
997
998 hci_dev_lock(hdev);
999
1000 if (test_bit(HCI_MGMT, &hdev->dev_flags))
1001 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1002 ACL_LINK, 0, rp->status);
1003
1004 hci_dev_unlock(hdev);
1005 }
1006
1007 static void hci_cc_user_passkey_reply(struct hci_dev *hdev, 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 (test_bit(HCI_MGMT, &hdev->dev_flags))
1016 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1017 0, rp->status);
1018
1019 hci_dev_unlock(hdev);
1020 }
1021
1022 static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
1023 struct sk_buff *skb)
1024 {
1025 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
1026
1027 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1028
1029 hci_dev_lock(hdev);
1030
1031 if (test_bit(HCI_MGMT, &hdev->dev_flags))
1032 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1033 ACL_LINK, 0, rp->status);
1034
1035 hci_dev_unlock(hdev);
1036 }
1037
1038 static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
1039 struct sk_buff *skb)
1040 {
1041 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
1042
1043 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1044
1045 hci_dev_lock(hdev);
1046 mgmt_read_local_oob_data_complete(hdev, rp->hash, rp->rand, NULL, NULL,
1047 rp->status);
1048 hci_dev_unlock(hdev);
1049 }
1050
1051 static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
1052 struct sk_buff *skb)
1053 {
1054 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1055
1056 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1057
1058 hci_dev_lock(hdev);
1059 mgmt_read_local_oob_data_complete(hdev, rp->hash192, rp->rand192,
1060 rp->hash256, rp->rand256,
1061 rp->status);
1062 hci_dev_unlock(hdev);
1063 }
1064
1065
1066 static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1067 {
1068 __u8 status = *((__u8 *) skb->data);
1069 bdaddr_t *sent;
1070
1071 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1072
1073 if (status)
1074 return;
1075
1076 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1077 if (!sent)
1078 return;
1079
1080 hci_dev_lock(hdev);
1081
1082 bacpy(&hdev->random_addr, sent);
1083
1084 hci_dev_unlock(hdev);
1085 }
1086
1087 static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1088 {
1089 __u8 *sent, status = *((__u8 *) skb->data);
1090
1091 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1092
1093 if (status)
1094 return;
1095
1096 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1097 if (!sent)
1098 return;
1099
1100 hci_dev_lock(hdev);
1101
1102 /* If we're doing connection initiation as peripheral. Set a
1103 * timeout in case something goes wrong.
1104 */
1105 if (*sent) {
1106 struct hci_conn *conn;
1107
1108 set_bit(HCI_LE_ADV, &hdev->dev_flags);
1109
1110 conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
1111 if (conn)
1112 queue_delayed_work(hdev->workqueue,
1113 &conn->le_conn_timeout,
1114 conn->conn_timeout);
1115 } else {
1116 clear_bit(HCI_LE_ADV, &hdev->dev_flags);
1117 }
1118
1119 hci_dev_unlock(hdev);
1120 }
1121
1122 static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1123 {
1124 struct hci_cp_le_set_scan_param *cp;
1125 __u8 status = *((__u8 *) skb->data);
1126
1127 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1128
1129 if (status)
1130 return;
1131
1132 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1133 if (!cp)
1134 return;
1135
1136 hci_dev_lock(hdev);
1137
1138 hdev->le_scan_type = cp->type;
1139
1140 hci_dev_unlock(hdev);
1141 }
1142
1143 static bool has_pending_adv_report(struct hci_dev *hdev)
1144 {
1145 struct discovery_state *d = &hdev->discovery;
1146
1147 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1148 }
1149
1150 static void clear_pending_adv_report(struct hci_dev *hdev)
1151 {
1152 struct discovery_state *d = &hdev->discovery;
1153
1154 bacpy(&d->last_adv_addr, BDADDR_ANY);
1155 d->last_adv_data_len = 0;
1156 }
1157
1158 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1159 u8 bdaddr_type, s8 rssi, u32 flags,
1160 u8 *data, u8 len)
1161 {
1162 struct discovery_state *d = &hdev->discovery;
1163
1164 bacpy(&d->last_adv_addr, bdaddr);
1165 d->last_adv_addr_type = bdaddr_type;
1166 d->last_adv_rssi = rssi;
1167 d->last_adv_flags = flags;
1168 memcpy(d->last_adv_data, data, len);
1169 d->last_adv_data_len = len;
1170 }
1171
1172 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1173 struct sk_buff *skb)
1174 {
1175 struct hci_cp_le_set_scan_enable *cp;
1176 __u8 status = *((__u8 *) skb->data);
1177
1178 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1179
1180 if (status)
1181 return;
1182
1183 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1184 if (!cp)
1185 return;
1186
1187 hci_dev_lock(hdev);
1188
1189 switch (cp->enable) {
1190 case LE_SCAN_ENABLE:
1191 set_bit(HCI_LE_SCAN, &hdev->dev_flags);
1192 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1193 clear_pending_adv_report(hdev);
1194 break;
1195
1196 case LE_SCAN_DISABLE:
1197 /* We do this here instead of when setting DISCOVERY_STOPPED
1198 * since the latter would potentially require waiting for
1199 * inquiry to stop too.
1200 */
1201 if (has_pending_adv_report(hdev)) {
1202 struct discovery_state *d = &hdev->discovery;
1203
1204 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1205 d->last_adv_addr_type, NULL,
1206 d->last_adv_rssi, d->last_adv_flags,
1207 d->last_adv_data,
1208 d->last_adv_data_len, NULL, 0);
1209 }
1210
1211 /* Cancel this timer so that we don't try to disable scanning
1212 * when it's already disabled.
1213 */
1214 cancel_delayed_work(&hdev->le_scan_disable);
1215
1216 clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
1217
1218 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1219 * interrupted scanning due to a connect request. Mark
1220 * therefore discovery as stopped. If this was not
1221 * because of a connect request advertising might have
1222 * been disabled because of active scanning, so
1223 * re-enable it again if necessary.
1224 */
1225 if (test_and_clear_bit(HCI_LE_SCAN_INTERRUPTED,
1226 &hdev->dev_flags))
1227 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1228 else if (!test_bit(HCI_LE_ADV, &hdev->dev_flags) &&
1229 hdev->discovery.state == DISCOVERY_FINDING)
1230 mgmt_reenable_advertising(hdev);
1231
1232 break;
1233
1234 default:
1235 BT_ERR("Used reserved LE_Scan_Enable param %d", cp->enable);
1236 break;
1237 }
1238
1239 hci_dev_unlock(hdev);
1240 }
1241
1242 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1243 struct sk_buff *skb)
1244 {
1245 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1246
1247 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1248
1249 if (rp->status)
1250 return;
1251
1252 hdev->le_white_list_size = rp->size;
1253 }
1254
1255 static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1256 struct sk_buff *skb)
1257 {
1258 __u8 status = *((__u8 *) skb->data);
1259
1260 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1261
1262 if (status)
1263 return;
1264
1265 hci_bdaddr_list_clear(&hdev->le_white_list);
1266 }
1267
1268 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1269 struct sk_buff *skb)
1270 {
1271 struct hci_cp_le_add_to_white_list *sent;
1272 __u8 status = *((__u8 *) skb->data);
1273
1274 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1275
1276 if (status)
1277 return;
1278
1279 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1280 if (!sent)
1281 return;
1282
1283 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1284 sent->bdaddr_type);
1285 }
1286
1287 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1288 struct sk_buff *skb)
1289 {
1290 struct hci_cp_le_del_from_white_list *sent;
1291 __u8 status = *((__u8 *) skb->data);
1292
1293 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1294
1295 if (status)
1296 return;
1297
1298 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1299 if (!sent)
1300 return;
1301
1302 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1303 sent->bdaddr_type);
1304 }
1305
1306 static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1307 struct sk_buff *skb)
1308 {
1309 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1310
1311 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1312
1313 if (rp->status)
1314 return;
1315
1316 memcpy(hdev->le_states, rp->le_states, 8);
1317 }
1318
1319 static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
1320 struct sk_buff *skb)
1321 {
1322 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;
1323
1324 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1325
1326 if (rp->status)
1327 return;
1328
1329 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1330 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1331 }
1332
1333 static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
1334 struct sk_buff *skb)
1335 {
1336 struct hci_cp_le_write_def_data_len *sent;
1337 __u8 status = *((__u8 *) skb->data);
1338
1339 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1340
1341 if (status)
1342 return;
1343
1344 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1345 if (!sent)
1346 return;
1347
1348 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1349 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1350 }
1351
1352 static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
1353 struct sk_buff *skb)
1354 {
1355 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;
1356
1357 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1358
1359 if (rp->status)
1360 return;
1361
1362 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
1363 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
1364 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
1365 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
1366 }
1367
1368 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1369 struct sk_buff *skb)
1370 {
1371 struct hci_cp_write_le_host_supported *sent;
1372 __u8 status = *((__u8 *) skb->data);
1373
1374 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1375
1376 if (status)
1377 return;
1378
1379 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1380 if (!sent)
1381 return;
1382
1383 hci_dev_lock(hdev);
1384
1385 if (sent->le) {
1386 hdev->features[1][0] |= LMP_HOST_LE;
1387 set_bit(HCI_LE_ENABLED, &hdev->dev_flags);
1388 } else {
1389 hdev->features[1][0] &= ~LMP_HOST_LE;
1390 clear_bit(HCI_LE_ENABLED, &hdev->dev_flags);
1391 clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
1392 }
1393
1394 if (sent->simul)
1395 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1396 else
1397 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1398
1399 hci_dev_unlock(hdev);
1400 }
1401
1402 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1403 {
1404 struct hci_cp_le_set_adv_param *cp;
1405 u8 status = *((u8 *) skb->data);
1406
1407 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1408
1409 if (status)
1410 return;
1411
1412 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1413 if (!cp)
1414 return;
1415
1416 hci_dev_lock(hdev);
1417 hdev->adv_addr_type = cp->own_address_type;
1418 hci_dev_unlock(hdev);
1419 }
1420
1421 static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev,
1422 struct sk_buff *skb)
1423 {
1424 struct hci_rp_write_remote_amp_assoc *rp = (void *) skb->data;
1425
1426 BT_DBG("%s status 0x%2.2x phy_handle 0x%2.2x",
1427 hdev->name, rp->status, rp->phy_handle);
1428
1429 if (rp->status)
1430 return;
1431
1432 amp_write_rem_assoc_continue(hdev, rp->phy_handle);
1433 }
1434
1435 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1436 {
1437 struct hci_rp_read_rssi *rp = (void *) skb->data;
1438 struct hci_conn *conn;
1439
1440 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1441
1442 if (rp->status)
1443 return;
1444
1445 hci_dev_lock(hdev);
1446
1447 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1448 if (conn)
1449 conn->rssi = rp->rssi;
1450
1451 hci_dev_unlock(hdev);
1452 }
1453
1454 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1455 {
1456 struct hci_cp_read_tx_power *sent;
1457 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1458 struct hci_conn *conn;
1459
1460 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1461
1462 if (rp->status)
1463 return;
1464
1465 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1466 if (!sent)
1467 return;
1468
1469 hci_dev_lock(hdev);
1470
1471 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1472 if (!conn)
1473 goto unlock;
1474
1475 switch (sent->type) {
1476 case 0x00:
1477 conn->tx_power = rp->tx_power;
1478 break;
1479 case 0x01:
1480 conn->max_tx_power = rp->tx_power;
1481 break;
1482 }
1483
1484 unlock:
1485 hci_dev_unlock(hdev);
1486 }
1487
1488 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1489 {
1490 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1491
1492 if (status) {
1493 hci_conn_check_pending(hdev);
1494 return;
1495 }
1496
1497 set_bit(HCI_INQUIRY, &hdev->flags);
1498 }
1499
1500 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1501 {
1502 struct hci_cp_create_conn *cp;
1503 struct hci_conn *conn;
1504
1505 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1506
1507 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1508 if (!cp)
1509 return;
1510
1511 hci_dev_lock(hdev);
1512
1513 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1514
1515 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1516
1517 if (status) {
1518 if (conn && conn->state == BT_CONNECT) {
1519 if (status != 0x0c || conn->attempt > 2) {
1520 conn->state = BT_CLOSED;
1521 hci_proto_connect_cfm(conn, status);
1522 hci_conn_del(conn);
1523 } else
1524 conn->state = BT_CONNECT2;
1525 }
1526 } else {
1527 if (!conn) {
1528 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1529 HCI_ROLE_MASTER);
1530 if (!conn)
1531 BT_ERR("No memory for new connection");
1532 }
1533 }
1534
1535 hci_dev_unlock(hdev);
1536 }
1537
1538 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1539 {
1540 struct hci_cp_add_sco *cp;
1541 struct hci_conn *acl, *sco;
1542 __u16 handle;
1543
1544 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1545
1546 if (!status)
1547 return;
1548
1549 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1550 if (!cp)
1551 return;
1552
1553 handle = __le16_to_cpu(cp->handle);
1554
1555 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1556
1557 hci_dev_lock(hdev);
1558
1559 acl = hci_conn_hash_lookup_handle(hdev, handle);
1560 if (acl) {
1561 sco = acl->link;
1562 if (sco) {
1563 sco->state = BT_CLOSED;
1564
1565 hci_proto_connect_cfm(sco, status);
1566 hci_conn_del(sco);
1567 }
1568 }
1569
1570 hci_dev_unlock(hdev);
1571 }
1572
1573 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1574 {
1575 struct hci_cp_auth_requested *cp;
1576 struct hci_conn *conn;
1577
1578 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1579
1580 if (!status)
1581 return;
1582
1583 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1584 if (!cp)
1585 return;
1586
1587 hci_dev_lock(hdev);
1588
1589 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1590 if (conn) {
1591 if (conn->state == BT_CONFIG) {
1592 hci_proto_connect_cfm(conn, status);
1593 hci_conn_drop(conn);
1594 }
1595 }
1596
1597 hci_dev_unlock(hdev);
1598 }
1599
1600 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1601 {
1602 struct hci_cp_set_conn_encrypt *cp;
1603 struct hci_conn *conn;
1604
1605 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1606
1607 if (!status)
1608 return;
1609
1610 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1611 if (!cp)
1612 return;
1613
1614 hci_dev_lock(hdev);
1615
1616 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1617 if (conn) {
1618 if (conn->state == BT_CONFIG) {
1619 hci_proto_connect_cfm(conn, status);
1620 hci_conn_drop(conn);
1621 }
1622 }
1623
1624 hci_dev_unlock(hdev);
1625 }
1626
1627 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1628 struct hci_conn *conn)
1629 {
1630 if (conn->state != BT_CONFIG || !conn->out)
1631 return 0;
1632
1633 if (conn->pending_sec_level == BT_SECURITY_SDP)
1634 return 0;
1635
1636 /* Only request authentication for SSP connections or non-SSP
1637 * devices with sec_level MEDIUM or HIGH or if MITM protection
1638 * is requested.
1639 */
1640 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1641 conn->pending_sec_level != BT_SECURITY_FIPS &&
1642 conn->pending_sec_level != BT_SECURITY_HIGH &&
1643 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1644 return 0;
1645
1646 return 1;
1647 }
1648
1649 static int hci_resolve_name(struct hci_dev *hdev,
1650 struct inquiry_entry *e)
1651 {
1652 struct hci_cp_remote_name_req cp;
1653
1654 memset(&cp, 0, sizeof(cp));
1655
1656 bacpy(&cp.bdaddr, &e->data.bdaddr);
1657 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1658 cp.pscan_mode = e->data.pscan_mode;
1659 cp.clock_offset = e->data.clock_offset;
1660
1661 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1662 }
1663
1664 static bool hci_resolve_next_name(struct hci_dev *hdev)
1665 {
1666 struct discovery_state *discov = &hdev->discovery;
1667 struct inquiry_entry *e;
1668
1669 if (list_empty(&discov->resolve))
1670 return false;
1671
1672 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1673 if (!e)
1674 return false;
1675
1676 if (hci_resolve_name(hdev, e) == 0) {
1677 e->name_state = NAME_PENDING;
1678 return true;
1679 }
1680
1681 return false;
1682 }
1683
1684 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1685 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1686 {
1687 struct discovery_state *discov = &hdev->discovery;
1688 struct inquiry_entry *e;
1689
1690 /* Update the mgmt connected state if necessary. Be careful with
1691 * conn objects that exist but are not (yet) connected however.
1692 * Only those in BT_CONFIG or BT_CONNECTED states can be
1693 * considered connected.
1694 */
1695 if (conn &&
1696 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1697 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1698 mgmt_device_connected(hdev, conn, 0, name, name_len);
1699
1700 if (discov->state == DISCOVERY_STOPPED)
1701 return;
1702
1703 if (discov->state == DISCOVERY_STOPPING)
1704 goto discov_complete;
1705
1706 if (discov->state != DISCOVERY_RESOLVING)
1707 return;
1708
1709 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1710 /* If the device was not found in a list of found devices names of which
1711 * are pending. there is no need to continue resolving a next name as it
1712 * will be done upon receiving another Remote Name Request Complete
1713 * Event */
1714 if (!e)
1715 return;
1716
1717 list_del(&e->list);
1718 if (name) {
1719 e->name_state = NAME_KNOWN;
1720 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1721 e->data.rssi, name, name_len);
1722 } else {
1723 e->name_state = NAME_NOT_KNOWN;
1724 }
1725
1726 if (hci_resolve_next_name(hdev))
1727 return;
1728
1729 discov_complete:
1730 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1731 }
1732
1733 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
1734 {
1735 struct hci_cp_remote_name_req *cp;
1736 struct hci_conn *conn;
1737
1738 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1739
1740 /* If successful wait for the name req complete event before
1741 * checking for the need to do authentication */
1742 if (!status)
1743 return;
1744
1745 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
1746 if (!cp)
1747 return;
1748
1749 hci_dev_lock(hdev);
1750
1751 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1752
1753 if (test_bit(HCI_MGMT, &hdev->dev_flags))
1754 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1755
1756 if (!conn)
1757 goto unlock;
1758
1759 if (!hci_outgoing_auth_needed(hdev, conn))
1760 goto unlock;
1761
1762 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1763 struct hci_cp_auth_requested auth_cp;
1764
1765 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
1766
1767 auth_cp.handle = __cpu_to_le16(conn->handle);
1768 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
1769 sizeof(auth_cp), &auth_cp);
1770 }
1771
1772 unlock:
1773 hci_dev_unlock(hdev);
1774 }
1775
1776 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
1777 {
1778 struct hci_cp_read_remote_features *cp;
1779 struct hci_conn *conn;
1780
1781 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1782
1783 if (!status)
1784 return;
1785
1786 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
1787 if (!cp)
1788 return;
1789
1790 hci_dev_lock(hdev);
1791
1792 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1793 if (conn) {
1794 if (conn->state == BT_CONFIG) {
1795 hci_proto_connect_cfm(conn, status);
1796 hci_conn_drop(conn);
1797 }
1798 }
1799
1800 hci_dev_unlock(hdev);
1801 }
1802
1803 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
1804 {
1805 struct hci_cp_read_remote_ext_features *cp;
1806 struct hci_conn *conn;
1807
1808 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1809
1810 if (!status)
1811 return;
1812
1813 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
1814 if (!cp)
1815 return;
1816
1817 hci_dev_lock(hdev);
1818
1819 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1820 if (conn) {
1821 if (conn->state == BT_CONFIG) {
1822 hci_proto_connect_cfm(conn, status);
1823 hci_conn_drop(conn);
1824 }
1825 }
1826
1827 hci_dev_unlock(hdev);
1828 }
1829
1830 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
1831 {
1832 struct hci_cp_setup_sync_conn *cp;
1833 struct hci_conn *acl, *sco;
1834 __u16 handle;
1835
1836 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1837
1838 if (!status)
1839 return;
1840
1841 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
1842 if (!cp)
1843 return;
1844
1845 handle = __le16_to_cpu(cp->handle);
1846
1847 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1848
1849 hci_dev_lock(hdev);
1850
1851 acl = hci_conn_hash_lookup_handle(hdev, handle);
1852 if (acl) {
1853 sco = acl->link;
1854 if (sco) {
1855 sco->state = BT_CLOSED;
1856
1857 hci_proto_connect_cfm(sco, status);
1858 hci_conn_del(sco);
1859 }
1860 }
1861
1862 hci_dev_unlock(hdev);
1863 }
1864
1865 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
1866 {
1867 struct hci_cp_sniff_mode *cp;
1868 struct hci_conn *conn;
1869
1870 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1871
1872 if (!status)
1873 return;
1874
1875 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
1876 if (!cp)
1877 return;
1878
1879 hci_dev_lock(hdev);
1880
1881 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1882 if (conn) {
1883 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1884
1885 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1886 hci_sco_setup(conn, status);
1887 }
1888
1889 hci_dev_unlock(hdev);
1890 }
1891
1892 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
1893 {
1894 struct hci_cp_exit_sniff_mode *cp;
1895 struct hci_conn *conn;
1896
1897 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1898
1899 if (!status)
1900 return;
1901
1902 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
1903 if (!cp)
1904 return;
1905
1906 hci_dev_lock(hdev);
1907
1908 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1909 if (conn) {
1910 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1911
1912 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1913 hci_sco_setup(conn, status);
1914 }
1915
1916 hci_dev_unlock(hdev);
1917 }
1918
1919 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
1920 {
1921 struct hci_cp_disconnect *cp;
1922 struct hci_conn *conn;
1923
1924 if (!status)
1925 return;
1926
1927 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
1928 if (!cp)
1929 return;
1930
1931 hci_dev_lock(hdev);
1932
1933 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1934 if (conn)
1935 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1936 conn->dst_type, status);
1937
1938 hci_dev_unlock(hdev);
1939 }
1940
1941 static void hci_cs_create_phylink(struct hci_dev *hdev, u8 status)
1942 {
1943 struct hci_cp_create_phy_link *cp;
1944
1945 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1946
1947 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_PHY_LINK);
1948 if (!cp)
1949 return;
1950
1951 hci_dev_lock(hdev);
1952
1953 if (status) {
1954 struct hci_conn *hcon;
1955
1956 hcon = hci_conn_hash_lookup_handle(hdev, cp->phy_handle);
1957 if (hcon)
1958 hci_conn_del(hcon);
1959 } else {
1960 amp_write_remote_assoc(hdev, cp->phy_handle);
1961 }
1962
1963 hci_dev_unlock(hdev);
1964 }
1965
1966 static void hci_cs_accept_phylink(struct hci_dev *hdev, u8 status)
1967 {
1968 struct hci_cp_accept_phy_link *cp;
1969
1970 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1971
1972 if (status)
1973 return;
1974
1975 cp = hci_sent_cmd_data(hdev, HCI_OP_ACCEPT_PHY_LINK);
1976 if (!cp)
1977 return;
1978
1979 amp_write_remote_assoc(hdev, cp->phy_handle);
1980 }
1981
1982 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
1983 {
1984 struct hci_cp_le_create_conn *cp;
1985 struct hci_conn *conn;
1986
1987 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1988
1989 /* All connection failure handling is taken care of by the
1990 * hci_le_conn_failed function which is triggered by the HCI
1991 * request completion callbacks used for connecting.
1992 */
1993 if (status)
1994 return;
1995
1996 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
1997 if (!cp)
1998 return;
1999
2000 hci_dev_lock(hdev);
2001
2002 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->peer_addr);
2003 if (!conn)
2004 goto unlock;
2005
2006 /* Store the initiator and responder address information which
2007 * is needed for SMP. These values will not change during the
2008 * lifetime of the connection.
2009 */
2010 conn->init_addr_type = cp->own_address_type;
2011 if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
2012 bacpy(&conn->init_addr, &hdev->random_addr);
2013 else
2014 bacpy(&conn->init_addr, &hdev->bdaddr);
2015
2016 conn->resp_addr_type = cp->peer_addr_type;
2017 bacpy(&conn->resp_addr, &cp->peer_addr);
2018
2019 /* We don't want the connection attempt to stick around
2020 * indefinitely since LE doesn't have a page timeout concept
2021 * like BR/EDR. Set a timer for any connection that doesn't use
2022 * the white list for connecting.
2023 */
2024 if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
2025 queue_delayed_work(conn->hdev->workqueue,
2026 &conn->le_conn_timeout,
2027 conn->conn_timeout);
2028
2029 unlock:
2030 hci_dev_unlock(hdev);
2031 }
2032
2033 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2034 {
2035 struct hci_cp_le_start_enc *cp;
2036 struct hci_conn *conn;
2037
2038 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2039
2040 if (!status)
2041 return;
2042
2043 hci_dev_lock(hdev);
2044
2045 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2046 if (!cp)
2047 goto unlock;
2048
2049 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2050 if (!conn)
2051 goto unlock;
2052
2053 if (conn->state != BT_CONNECTED)
2054 goto unlock;
2055
2056 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2057 hci_conn_drop(conn);
2058
2059 unlock:
2060 hci_dev_unlock(hdev);
2061 }
2062
2063 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2064 {
2065 struct hci_cp_switch_role *cp;
2066 struct hci_conn *conn;
2067
2068 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2069
2070 if (!status)
2071 return;
2072
2073 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
2074 if (!cp)
2075 return;
2076
2077 hci_dev_lock(hdev);
2078
2079 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2080 if (conn)
2081 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2082
2083 hci_dev_unlock(hdev);
2084 }
2085
2086 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2087 {
2088 __u8 status = *((__u8 *) skb->data);
2089 struct discovery_state *discov = &hdev->discovery;
2090 struct inquiry_entry *e;
2091
2092 BT_DBG("%s status 0x%2.2x", hdev->name, status);
2093
2094 hci_conn_check_pending(hdev);
2095
2096 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
2097 return;
2098
2099 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2100 wake_up_bit(&hdev->flags, HCI_INQUIRY);
2101
2102 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
2103 return;
2104
2105 hci_dev_lock(hdev);
2106
2107 if (discov->state != DISCOVERY_FINDING)
2108 goto unlock;
2109
2110 if (list_empty(&discov->resolve)) {
2111 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2112 goto unlock;
2113 }
2114
2115 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2116 if (e && hci_resolve_name(hdev, e) == 0) {
2117 e->name_state = NAME_PENDING;
2118 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
2119 } else {
2120 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2121 }
2122
2123 unlock:
2124 hci_dev_unlock(hdev);
2125 }
2126
2127 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
2128 {
2129 struct inquiry_data data;
2130 struct inquiry_info *info = (void *) (skb->data + 1);
2131 int num_rsp = *((__u8 *) skb->data);
2132
2133 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
2134
2135 if (!num_rsp)
2136 return;
2137
2138 if (test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags))
2139 return;
2140
2141 hci_dev_lock(hdev);
2142
2143 for (; num_rsp; num_rsp--, info++) {
2144 u32 flags;
2145
2146 bacpy(&data.bdaddr, &info->bdaddr);
2147 data.pscan_rep_mode = info->pscan_rep_mode;
2148 data.pscan_period_mode = info->pscan_period_mode;
2149 data.pscan_mode = info->pscan_mode;
2150 memcpy(data.dev_class, info->dev_class, 3);
2151 data.clock_offset = info->clock_offset;
2152 data.rssi = HCI_RSSI_INVALID;
2153 data.ssp_mode = 0x00;
2154
2155 flags = hci_inquiry_cache_update(hdev, &data, false);
2156
2157 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2158 info->dev_class, HCI_RSSI_INVALID,
2159 flags, NULL, 0, NULL, 0);
2160 }
2161
2162 hci_dev_unlock(hdev);
2163 }
2164
2165 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2166 {
2167 struct hci_ev_conn_complete *ev = (void *) skb->data;
2168 struct hci_conn *conn;
2169
2170 BT_DBG("%s", hdev->name);
2171
2172 hci_dev_lock(hdev);
2173
2174 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2175 if (!conn) {
2176 if (ev->link_type != SCO_LINK)
2177 goto unlock;
2178
2179 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2180 if (!conn)
2181 goto unlock;
2182
2183 conn->type = SCO_LINK;
2184 }
2185
2186 if (!ev->status) {
2187 conn->handle = __le16_to_cpu(ev->handle);
2188
2189 if (conn->type == ACL_LINK) {
2190 conn->state = BT_CONFIG;
2191 hci_conn_hold(conn);
2192
2193 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2194 !hci_find_link_key(hdev, &ev->bdaddr))
2195 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2196 else
2197 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2198 } else
2199 conn->state = BT_CONNECTED;
2200
2201 hci_debugfs_create_conn(conn);
2202 hci_conn_add_sysfs(conn);
2203
2204 if (test_bit(HCI_AUTH, &hdev->flags))
2205 set_bit(HCI_CONN_AUTH, &conn->flags);
2206
2207 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2208 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2209
2210 /* Get remote features */
2211 if (conn->type == ACL_LINK) {
2212 struct hci_cp_read_remote_features cp;
2213 cp.handle = ev->handle;
2214 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2215 sizeof(cp), &cp);
2216
2217 hci_update_page_scan(hdev);
2218 }
2219
2220 /* Set packet type for incoming connection */
2221 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2222 struct hci_cp_change_conn_ptype cp;
2223 cp.handle = ev->handle;
2224 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2225 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2226 &cp);
2227 }
2228 } else {
2229 conn->state = BT_CLOSED;
2230 if (conn->type == ACL_LINK)
2231 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2232 conn->dst_type, ev->status);
2233 }
2234
2235 if (conn->type == ACL_LINK)
2236 hci_sco_setup(conn, ev->status);
2237
2238 if (ev->status) {
2239 hci_proto_connect_cfm(conn, ev->status);
2240 hci_conn_del(conn);
2241 } else if (ev->link_type != ACL_LINK)
2242 hci_proto_connect_cfm(conn, ev->status);
2243
2244 unlock:
2245 hci_dev_unlock(hdev);
2246
2247 hci_conn_check_pending(hdev);
2248 }
2249
2250 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2251 {
2252 struct hci_cp_reject_conn_req cp;
2253
2254 bacpy(&cp.bdaddr, bdaddr);
2255 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2256 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2257 }
2258
2259 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2260 {
2261 struct hci_ev_conn_request *ev = (void *) skb->data;
2262 int mask = hdev->link_mode;
2263 struct inquiry_entry *ie;
2264 struct hci_conn *conn;
2265 __u8 flags = 0;
2266
2267 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2268 ev->link_type);
2269
2270 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2271 &flags);
2272
2273 if (!(mask & HCI_LM_ACCEPT)) {
2274 hci_reject_conn(hdev, &ev->bdaddr);
2275 return;
2276 }
2277
2278 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2279 BDADDR_BREDR)) {
2280 hci_reject_conn(hdev, &ev->bdaddr);
2281 return;
2282 }
2283
2284 /* Require HCI_CONNECTABLE or a whitelist entry to accept the
2285 * connection. These features are only touched through mgmt so
2286 * only do the checks if HCI_MGMT is set.
2287 */
2288 if (test_bit(HCI_MGMT, &hdev->dev_flags) &&
2289 !test_bit(HCI_CONNECTABLE, &hdev->dev_flags) &&
2290 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2291 BDADDR_BREDR)) {
2292 hci_reject_conn(hdev, &ev->bdaddr);
2293 return;
2294 }
2295
2296 /* Connection accepted */
2297
2298 hci_dev_lock(hdev);
2299
2300 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2301 if (ie)
2302 memcpy(ie->data.dev_class, ev->dev_class, 3);
2303
2304 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2305 &ev->bdaddr);
2306 if (!conn) {
2307 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2308 HCI_ROLE_SLAVE);
2309 if (!conn) {
2310 BT_ERR("No memory for new connection");
2311 hci_dev_unlock(hdev);
2312 return;
2313 }
2314 }
2315
2316 memcpy(conn->dev_class, ev->dev_class, 3);
2317
2318 hci_dev_unlock(hdev);
2319
2320 if (ev->link_type == ACL_LINK ||
2321 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2322 struct hci_cp_accept_conn_req cp;
2323 conn->state = BT_CONNECT;
2324
2325 bacpy(&cp.bdaddr, &ev->bdaddr);
2326
2327 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2328 cp.role = 0x00; /* Become master */
2329 else
2330 cp.role = 0x01; /* Remain slave */
2331
2332 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2333 } else if (!(flags & HCI_PROTO_DEFER)) {
2334 struct hci_cp_accept_sync_conn_req cp;
2335 conn->state = BT_CONNECT;
2336
2337 bacpy(&cp.bdaddr, &ev->bdaddr);
2338 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2339
2340 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2341 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2342 cp.max_latency = cpu_to_le16(0xffff);
2343 cp.content_format = cpu_to_le16(hdev->voice_setting);
2344 cp.retrans_effort = 0xff;
2345
2346 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2347 &cp);
2348 } else {
2349 conn->state = BT_CONNECT2;
2350 hci_proto_connect_cfm(conn, 0);
2351 }
2352 }
2353
2354 static u8 hci_to_mgmt_reason(u8 err)
2355 {
2356 switch (err) {
2357 case HCI_ERROR_CONNECTION_TIMEOUT:
2358 return MGMT_DEV_DISCONN_TIMEOUT;
2359 case HCI_ERROR_REMOTE_USER_TERM:
2360 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2361 case HCI_ERROR_REMOTE_POWER_OFF:
2362 return MGMT_DEV_DISCONN_REMOTE;
2363 case HCI_ERROR_LOCAL_HOST_TERM:
2364 return MGMT_DEV_DISCONN_LOCAL_HOST;
2365 default:
2366 return MGMT_DEV_DISCONN_UNKNOWN;
2367 }
2368 }
2369
2370 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2371 {
2372 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2373 u8 reason = hci_to_mgmt_reason(ev->reason);
2374 struct hci_conn_params *params;
2375 struct hci_conn *conn;
2376 bool mgmt_connected;
2377 u8 type;
2378
2379 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2380
2381 hci_dev_lock(hdev);
2382
2383 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2384 if (!conn)
2385 goto unlock;
2386
2387 if (ev->status) {
2388 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2389 conn->dst_type, ev->status);
2390 goto unlock;
2391 }
2392
2393 conn->state = BT_CLOSED;
2394
2395 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2396 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2397 reason, mgmt_connected);
2398
2399 if (conn->type == ACL_LINK) {
2400 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2401 hci_remove_link_key(hdev, &conn->dst);
2402
2403 hci_update_page_scan(hdev);
2404 }
2405
2406 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2407 if (params) {
2408 switch (params->auto_connect) {
2409 case HCI_AUTO_CONN_LINK_LOSS:
2410 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2411 break;
2412 /* Fall through */
2413
2414 case HCI_AUTO_CONN_DIRECT:
2415 case HCI_AUTO_CONN_ALWAYS:
2416 list_del_init(&params->action);
2417 list_add(&params->action, &hdev->pend_le_conns);
2418 hci_update_background_scan(hdev);
2419 break;
2420
2421 default:
2422 break;
2423 }
2424 }
2425
2426 type = conn->type;
2427
2428 hci_proto_disconn_cfm(conn, ev->reason);
2429 hci_conn_del(conn);
2430
2431 /* Re-enable advertising if necessary, since it might
2432 * have been disabled by the connection. From the
2433 * HCI_LE_Set_Advertise_Enable command description in
2434 * the core specification (v4.0):
2435 * "The Controller shall continue advertising until the Host
2436 * issues an LE_Set_Advertise_Enable command with
2437 * Advertising_Enable set to 0x00 (Advertising is disabled)
2438 * or until a connection is created or until the Advertising
2439 * is timed out due to Directed Advertising."
2440 */
2441 if (type == LE_LINK)
2442 mgmt_reenable_advertising(hdev);
2443
2444 unlock:
2445 hci_dev_unlock(hdev);
2446 }
2447
2448 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2449 {
2450 struct hci_ev_auth_complete *ev = (void *) skb->data;
2451 struct hci_conn *conn;
2452
2453 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2454
2455 hci_dev_lock(hdev);
2456
2457 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2458 if (!conn)
2459 goto unlock;
2460
2461 if (!ev->status) {
2462 if (!hci_conn_ssp_enabled(conn) &&
2463 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2464 BT_INFO("re-auth of legacy device is not possible.");
2465 } else {
2466 set_bit(HCI_CONN_AUTH, &conn->flags);
2467 conn->sec_level = conn->pending_sec_level;
2468 }
2469 } else {
2470 mgmt_auth_failed(conn, ev->status);
2471 }
2472
2473 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2474 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2475
2476 if (conn->state == BT_CONFIG) {
2477 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2478 struct hci_cp_set_conn_encrypt cp;
2479 cp.handle = ev->handle;
2480 cp.encrypt = 0x01;
2481 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2482 &cp);
2483 } else {
2484 conn->state = BT_CONNECTED;
2485 hci_proto_connect_cfm(conn, ev->status);
2486 hci_conn_drop(conn);
2487 }
2488 } else {
2489 hci_auth_cfm(conn, ev->status);
2490
2491 hci_conn_hold(conn);
2492 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2493 hci_conn_drop(conn);
2494 }
2495
2496 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2497 if (!ev->status) {
2498 struct hci_cp_set_conn_encrypt cp;
2499 cp.handle = ev->handle;
2500 cp.encrypt = 0x01;
2501 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2502 &cp);
2503 } else {
2504 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2505 hci_encrypt_cfm(conn, ev->status, 0x00);
2506 }
2507 }
2508
2509 unlock:
2510 hci_dev_unlock(hdev);
2511 }
2512
2513 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2514 {
2515 struct hci_ev_remote_name *ev = (void *) skb->data;
2516 struct hci_conn *conn;
2517
2518 BT_DBG("%s", hdev->name);
2519
2520 hci_conn_check_pending(hdev);
2521
2522 hci_dev_lock(hdev);
2523
2524 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2525
2526 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
2527 goto check_auth;
2528
2529 if (ev->status == 0)
2530 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2531 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2532 else
2533 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2534
2535 check_auth:
2536 if (!conn)
2537 goto unlock;
2538
2539 if (!hci_outgoing_auth_needed(hdev, conn))
2540 goto unlock;
2541
2542 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2543 struct hci_cp_auth_requested cp;
2544
2545 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2546
2547 cp.handle = __cpu_to_le16(conn->handle);
2548 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2549 }
2550
2551 unlock:
2552 hci_dev_unlock(hdev);
2553 }
2554
2555 static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2556 {
2557 struct hci_ev_encrypt_change *ev = (void *) skb->data;
2558 struct hci_conn *conn;
2559
2560 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2561
2562 hci_dev_lock(hdev);
2563
2564 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2565 if (!conn)
2566 goto unlock;
2567
2568 if (!ev->status) {
2569 if (ev->encrypt) {
2570 /* Encryption implies authentication */
2571 set_bit(HCI_CONN_AUTH, &conn->flags);
2572 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2573 conn->sec_level = conn->pending_sec_level;
2574
2575 /* P-256 authentication key implies FIPS */
2576 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2577 set_bit(HCI_CONN_FIPS, &conn->flags);
2578
2579 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
2580 conn->type == LE_LINK)
2581 set_bit(HCI_CONN_AES_CCM, &conn->flags);
2582 } else {
2583 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2584 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
2585 }
2586 }
2587
2588 /* We should disregard the current RPA and generate a new one
2589 * whenever the encryption procedure fails.
2590 */
2591 if (ev->status && conn->type == LE_LINK)
2592 set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
2593
2594 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2595
2596 if (ev->status && conn->state == BT_CONNECTED) {
2597 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2598 hci_conn_drop(conn);
2599 goto unlock;
2600 }
2601
2602 if (conn->state == BT_CONFIG) {
2603 if (!ev->status)
2604 conn->state = BT_CONNECTED;
2605
2606 /* In Secure Connections Only mode, do not allow any
2607 * connections that are not encrypted with AES-CCM
2608 * using a P-256 authenticated combination key.
2609 */
2610 if (test_bit(HCI_SC_ONLY, &hdev->dev_flags) &&
2611 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
2612 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
2613 hci_proto_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
2614 hci_conn_drop(conn);
2615 goto unlock;
2616 }
2617
2618 hci_proto_connect_cfm(conn, ev->status);
2619 hci_conn_drop(conn);
2620 } else
2621 hci_encrypt_cfm(conn, ev->status, ev->encrypt);
2622
2623 unlock:
2624 hci_dev_unlock(hdev);
2625 }
2626
2627 static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
2628 struct sk_buff *skb)
2629 {
2630 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
2631 struct hci_conn *conn;
2632
2633 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2634
2635 hci_dev_lock(hdev);
2636
2637 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2638 if (conn) {
2639 if (!ev->status)
2640 set_bit(HCI_CONN_SECURE, &conn->flags);
2641
2642 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2643
2644 hci_key_change_cfm(conn, ev->status);
2645 }
2646
2647 hci_dev_unlock(hdev);
2648 }
2649
2650 static void hci_remote_features_evt(struct hci_dev *hdev,
2651 struct sk_buff *skb)
2652 {
2653 struct hci_ev_remote_features *ev = (void *) skb->data;
2654 struct hci_conn *conn;
2655
2656 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2657
2658 hci_dev_lock(hdev);
2659
2660 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2661 if (!conn)
2662 goto unlock;
2663
2664 if (!ev->status)
2665 memcpy(conn->features[0], ev->features, 8);
2666
2667 if (conn->state != BT_CONFIG)
2668 goto unlock;
2669
2670 if (!ev->status && lmp_ssp_capable(hdev) && lmp_ssp_capable(conn)) {
2671 struct hci_cp_read_remote_ext_features cp;
2672 cp.handle = ev->handle;
2673 cp.page = 0x01;
2674 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
2675 sizeof(cp), &cp);
2676 goto unlock;
2677 }
2678
2679 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
2680 struct hci_cp_remote_name_req cp;
2681 memset(&cp, 0, sizeof(cp));
2682 bacpy(&cp.bdaddr, &conn->dst);
2683 cp.pscan_rep_mode = 0x02;
2684 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2685 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2686 mgmt_device_connected(hdev, conn, 0, NULL, 0);
2687
2688 if (!hci_outgoing_auth_needed(hdev, conn)) {
2689 conn->state = BT_CONNECTED;
2690 hci_proto_connect_cfm(conn, ev->status);
2691 hci_conn_drop(conn);
2692 }
2693
2694 unlock:
2695 hci_dev_unlock(hdev);
2696 }
2697
2698 static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2699 {
2700 struct hci_ev_cmd_complete *ev = (void *) skb->data;
2701 u8 status = skb->data[sizeof(*ev)];
2702 __u16 opcode;
2703
2704 skb_pull(skb, sizeof(*ev));
2705
2706 opcode = __le16_to_cpu(ev->opcode);
2707
2708 switch (opcode) {
2709 case HCI_OP_INQUIRY_CANCEL:
2710 hci_cc_inquiry_cancel(hdev, skb);
2711 break;
2712
2713 case HCI_OP_PERIODIC_INQ:
2714 hci_cc_periodic_inq(hdev, skb);
2715 break;
2716
2717 case HCI_OP_EXIT_PERIODIC_INQ:
2718 hci_cc_exit_periodic_inq(hdev, skb);
2719 break;
2720
2721 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
2722 hci_cc_remote_name_req_cancel(hdev, skb);
2723 break;
2724
2725 case HCI_OP_ROLE_DISCOVERY:
2726 hci_cc_role_discovery(hdev, skb);
2727 break;
2728
2729 case HCI_OP_READ_LINK_POLICY:
2730 hci_cc_read_link_policy(hdev, skb);
2731 break;
2732
2733 case HCI_OP_WRITE_LINK_POLICY:
2734 hci_cc_write_link_policy(hdev, skb);
2735 break;
2736
2737 case HCI_OP_READ_DEF_LINK_POLICY:
2738 hci_cc_read_def_link_policy(hdev, skb);
2739 break;
2740
2741 case HCI_OP_WRITE_DEF_LINK_POLICY:
2742 hci_cc_write_def_link_policy(hdev, skb);
2743 break;
2744
2745 case HCI_OP_RESET:
2746 hci_cc_reset(hdev, skb);
2747 break;
2748
2749 case HCI_OP_READ_STORED_LINK_KEY:
2750 hci_cc_read_stored_link_key(hdev, skb);
2751 break;
2752
2753 case HCI_OP_DELETE_STORED_LINK_KEY:
2754 hci_cc_delete_stored_link_key(hdev, skb);
2755 break;
2756
2757 case HCI_OP_WRITE_LOCAL_NAME:
2758 hci_cc_write_local_name(hdev, skb);
2759 break;
2760
2761 case HCI_OP_READ_LOCAL_NAME:
2762 hci_cc_read_local_name(hdev, skb);
2763 break;
2764
2765 case HCI_OP_WRITE_AUTH_ENABLE:
2766 hci_cc_write_auth_enable(hdev, skb);
2767 break;
2768
2769 case HCI_OP_WRITE_ENCRYPT_MODE:
2770 hci_cc_write_encrypt_mode(hdev, skb);
2771 break;
2772
2773 case HCI_OP_WRITE_SCAN_ENABLE:
2774 hci_cc_write_scan_enable(hdev, skb);
2775 break;
2776
2777 case HCI_OP_READ_CLASS_OF_DEV:
2778 hci_cc_read_class_of_dev(hdev, skb);
2779 break;
2780
2781 case HCI_OP_WRITE_CLASS_OF_DEV:
2782 hci_cc_write_class_of_dev(hdev, skb);
2783 break;
2784
2785 case HCI_OP_READ_VOICE_SETTING:
2786 hci_cc_read_voice_setting(hdev, skb);
2787 break;
2788
2789 case HCI_OP_WRITE_VOICE_SETTING:
2790 hci_cc_write_voice_setting(hdev, skb);
2791 break;
2792
2793 case HCI_OP_READ_NUM_SUPPORTED_IAC:
2794 hci_cc_read_num_supported_iac(hdev, skb);
2795 break;
2796
2797 case HCI_OP_WRITE_SSP_MODE:
2798 hci_cc_write_ssp_mode(hdev, skb);
2799 break;
2800
2801 case HCI_OP_WRITE_SC_SUPPORT:
2802 hci_cc_write_sc_support(hdev, skb);
2803 break;
2804
2805 case HCI_OP_READ_LOCAL_VERSION:
2806 hci_cc_read_local_version(hdev, skb);
2807 break;
2808
2809 case HCI_OP_READ_LOCAL_COMMANDS:
2810 hci_cc_read_local_commands(hdev, skb);
2811 break;
2812
2813 case HCI_OP_READ_LOCAL_FEATURES:
2814 hci_cc_read_local_features(hdev, skb);
2815 break;
2816
2817 case HCI_OP_READ_LOCAL_EXT_FEATURES:
2818 hci_cc_read_local_ext_features(hdev, skb);
2819 break;
2820
2821 case HCI_OP_READ_BUFFER_SIZE:
2822 hci_cc_read_buffer_size(hdev, skb);
2823 break;
2824
2825 case HCI_OP_READ_BD_ADDR:
2826 hci_cc_read_bd_addr(hdev, skb);
2827 break;
2828
2829 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
2830 hci_cc_read_page_scan_activity(hdev, skb);
2831 break;
2832
2833 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
2834 hci_cc_write_page_scan_activity(hdev, skb);
2835 break;
2836
2837 case HCI_OP_READ_PAGE_SCAN_TYPE:
2838 hci_cc_read_page_scan_type(hdev, skb);
2839 break;
2840
2841 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
2842 hci_cc_write_page_scan_type(hdev, skb);
2843 break;
2844
2845 case HCI_OP_READ_DATA_BLOCK_SIZE:
2846 hci_cc_read_data_block_size(hdev, skb);
2847 break;
2848
2849 case HCI_OP_READ_FLOW_CONTROL_MODE:
2850 hci_cc_read_flow_control_mode(hdev, skb);
2851 break;
2852
2853 case HCI_OP_READ_LOCAL_AMP_INFO:
2854 hci_cc_read_local_amp_info(hdev, skb);
2855 break;
2856
2857 case HCI_OP_READ_CLOCK:
2858 hci_cc_read_clock(hdev, skb);
2859 break;
2860
2861 case HCI_OP_READ_LOCAL_AMP_ASSOC:
2862 hci_cc_read_local_amp_assoc(hdev, skb);
2863 break;
2864
2865 case HCI_OP_READ_INQ_RSP_TX_POWER:
2866 hci_cc_read_inq_rsp_tx_power(hdev, skb);
2867 break;
2868
2869 case HCI_OP_PIN_CODE_REPLY:
2870 hci_cc_pin_code_reply(hdev, skb);
2871 break;
2872
2873 case HCI_OP_PIN_CODE_NEG_REPLY:
2874 hci_cc_pin_code_neg_reply(hdev, skb);
2875 break;
2876
2877 case HCI_OP_READ_LOCAL_OOB_DATA:
2878 hci_cc_read_local_oob_data(hdev, skb);
2879 break;
2880
2881 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
2882 hci_cc_read_local_oob_ext_data(hdev, skb);
2883 break;
2884
2885 case HCI_OP_LE_READ_BUFFER_SIZE:
2886 hci_cc_le_read_buffer_size(hdev, skb);
2887 break;
2888
2889 case HCI_OP_LE_READ_LOCAL_FEATURES:
2890 hci_cc_le_read_local_features(hdev, skb);
2891 break;
2892
2893 case HCI_OP_LE_READ_ADV_TX_POWER:
2894 hci_cc_le_read_adv_tx_power(hdev, skb);
2895 break;
2896
2897 case HCI_OP_USER_CONFIRM_REPLY:
2898 hci_cc_user_confirm_reply(hdev, skb);
2899 break;
2900
2901 case HCI_OP_USER_CONFIRM_NEG_REPLY:
2902 hci_cc_user_confirm_neg_reply(hdev, skb);
2903 break;
2904
2905 case HCI_OP_USER_PASSKEY_REPLY:
2906 hci_cc_user_passkey_reply(hdev, skb);
2907 break;
2908
2909 case HCI_OP_USER_PASSKEY_NEG_REPLY:
2910 hci_cc_user_passkey_neg_reply(hdev, skb);
2911 break;
2912
2913 case HCI_OP_LE_SET_RANDOM_ADDR:
2914 hci_cc_le_set_random_addr(hdev, skb);
2915 break;
2916
2917 case HCI_OP_LE_SET_ADV_ENABLE:
2918 hci_cc_le_set_adv_enable(hdev, skb);
2919 break;
2920
2921 case HCI_OP_LE_SET_SCAN_PARAM:
2922 hci_cc_le_set_scan_param(hdev, skb);
2923 break;
2924
2925 case HCI_OP_LE_SET_SCAN_ENABLE:
2926 hci_cc_le_set_scan_enable(hdev, skb);
2927 break;
2928
2929 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
2930 hci_cc_le_read_white_list_size(hdev, skb);
2931 break;
2932
2933 case HCI_OP_LE_CLEAR_WHITE_LIST:
2934 hci_cc_le_clear_white_list(hdev, skb);
2935 break;
2936
2937 case HCI_OP_LE_ADD_TO_WHITE_LIST:
2938 hci_cc_le_add_to_white_list(hdev, skb);
2939 break;
2940
2941 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
2942 hci_cc_le_del_from_white_list(hdev, skb);
2943 break;
2944
2945 case HCI_OP_LE_READ_SUPPORTED_STATES:
2946 hci_cc_le_read_supported_states(hdev, skb);
2947 break;
2948
2949 case HCI_OP_LE_READ_DEF_DATA_LEN:
2950 hci_cc_le_read_def_data_len(hdev, skb);
2951 break;
2952
2953 case HCI_OP_LE_WRITE_DEF_DATA_LEN:
2954 hci_cc_le_write_def_data_len(hdev, skb);
2955 break;
2956
2957 case HCI_OP_LE_READ_MAX_DATA_LEN:
2958 hci_cc_le_read_max_data_len(hdev, skb);
2959 break;
2960
2961 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
2962 hci_cc_write_le_host_supported(hdev, skb);
2963 break;
2964
2965 case HCI_OP_LE_SET_ADV_PARAM:
2966 hci_cc_set_adv_param(hdev, skb);
2967 break;
2968
2969 case HCI_OP_WRITE_REMOTE_AMP_ASSOC:
2970 hci_cc_write_remote_amp_assoc(hdev, skb);
2971 break;
2972
2973 case HCI_OP_READ_RSSI:
2974 hci_cc_read_rssi(hdev, skb);
2975 break;
2976
2977 case HCI_OP_READ_TX_POWER:
2978 hci_cc_read_tx_power(hdev, skb);
2979 break;
2980
2981 default:
2982 BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
2983 break;
2984 }
2985
2986 if (opcode != HCI_OP_NOP)
2987 cancel_delayed_work(&hdev->cmd_timer);
2988
2989 hci_req_cmd_complete(hdev, opcode, status);
2990
2991 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
2992 atomic_set(&hdev->cmd_cnt, 1);
2993 if (!skb_queue_empty(&hdev->cmd_q))
2994 queue_work(hdev->workqueue, &hdev->cmd_work);
2995 }
2996 }
2997
2998 static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
2999 {
3000 struct hci_ev_cmd_status *ev = (void *) skb->data;
3001 __u16 opcode;
3002
3003 skb_pull(skb, sizeof(*ev));
3004
3005 opcode = __le16_to_cpu(ev->opcode);
3006
3007 switch (opcode) {
3008 case HCI_OP_INQUIRY:
3009 hci_cs_inquiry(hdev, ev->status);
3010 break;
3011
3012 case HCI_OP_CREATE_CONN:
3013 hci_cs_create_conn(hdev, ev->status);
3014 break;
3015
3016 case HCI_OP_DISCONNECT:
3017 hci_cs_disconnect(hdev, ev->status);
3018 break;
3019
3020 case HCI_OP_ADD_SCO:
3021 hci_cs_add_sco(hdev, ev->status);
3022 break;
3023
3024 case HCI_OP_AUTH_REQUESTED:
3025 hci_cs_auth_requested(hdev, ev->status);
3026 break;
3027
3028 case HCI_OP_SET_CONN_ENCRYPT:
3029 hci_cs_set_conn_encrypt(hdev, ev->status);
3030 break;
3031
3032 case HCI_OP_REMOTE_NAME_REQ:
3033 hci_cs_remote_name_req(hdev, ev->status);
3034 break;
3035
3036 case HCI_OP_READ_REMOTE_FEATURES:
3037 hci_cs_read_remote_features(hdev, ev->status);
3038 break;
3039
3040 case HCI_OP_READ_REMOTE_EXT_FEATURES:
3041 hci_cs_read_remote_ext_features(hdev, ev->status);
3042 break;
3043
3044 case HCI_OP_SETUP_SYNC_CONN:
3045 hci_cs_setup_sync_conn(hdev, ev->status);
3046 break;
3047
3048 case HCI_OP_CREATE_PHY_LINK:
3049 hci_cs_create_phylink(hdev, ev->status);
3050 break;
3051
3052 case HCI_OP_ACCEPT_PHY_LINK:
3053 hci_cs_accept_phylink(hdev, ev->status);
3054 break;
3055
3056 case HCI_OP_SNIFF_MODE:
3057 hci_cs_sniff_mode(hdev, ev->status);
3058 break;
3059
3060 case HCI_OP_EXIT_SNIFF_MODE:
3061 hci_cs_exit_sniff_mode(hdev, ev->status);
3062 break;
3063
3064 case HCI_OP_SWITCH_ROLE:
3065 hci_cs_switch_role(hdev, ev->status);
3066 break;
3067
3068 case HCI_OP_LE_CREATE_CONN:
3069 hci_cs_le_create_conn(hdev, ev->status);
3070 break;
3071
3072 case HCI_OP_LE_START_ENC:
3073 hci_cs_le_start_enc(hdev, ev->status);
3074 break;
3075
3076 default:
3077 BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
3078 break;
3079 }
3080
3081 if (opcode != HCI_OP_NOP)
3082 cancel_delayed_work(&hdev->cmd_timer);
3083
3084 if (ev->status ||
3085 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req.event))
3086 hci_req_cmd_complete(hdev, opcode, ev->status);
3087
3088 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
3089 atomic_set(&hdev->cmd_cnt, 1);
3090 if (!skb_queue_empty(&hdev->cmd_q))
3091 queue_work(hdev->workqueue, &hdev->cmd_work);
3092 }
3093 }
3094
3095 static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
3096 {
3097 struct hci_ev_hardware_error *ev = (void *) skb->data;
3098
3099 BT_ERR("%s hardware error 0x%2.2x", hdev->name, ev->code);
3100 }
3101
3102 static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3103 {
3104 struct hci_ev_role_change *ev = (void *) skb->data;
3105 struct hci_conn *conn;
3106
3107 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3108
3109 hci_dev_lock(hdev);
3110
3111 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3112 if (conn) {
3113 if (!ev->status)
3114 conn->role = ev->role;
3115
3116 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3117
3118 hci_role_switch_cfm(conn, ev->status, ev->role);
3119 }
3120
3121 hci_dev_unlock(hdev);
3122 }
3123
3124 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3125 {
3126 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
3127 int i;
3128
3129 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
3130 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3131 return;
3132 }
3133
3134 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3135 ev->num_hndl * sizeof(struct hci_comp_pkts_info)) {
3136 BT_DBG("%s bad parameters", hdev->name);
3137 return;
3138 }
3139
3140 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
3141
3142 for (i = 0; i < ev->num_hndl; i++) {
3143 struct hci_comp_pkts_info *info = &ev->handles[i];
3144 struct hci_conn *conn;
3145 __u16 handle, count;
3146
3147 handle = __le16_to_cpu(info->handle);
3148 count = __le16_to_cpu(info->count);
3149
3150 conn = hci_conn_hash_lookup_handle(hdev, handle);
3151 if (!conn)
3152 continue;
3153
3154 conn->sent -= count;
3155
3156 switch (conn->type) {
3157 case ACL_LINK:
3158 hdev->acl_cnt += count;
3159 if (hdev->acl_cnt > hdev->acl_pkts)
3160 hdev->acl_cnt = hdev->acl_pkts;
3161 break;
3162
3163 case LE_LINK:
3164 if (hdev->le_pkts) {
3165 hdev->le_cnt += count;
3166 if (hdev->le_cnt > hdev->le_pkts)
3167 hdev->le_cnt = hdev->le_pkts;
3168 } else {
3169 hdev->acl_cnt += count;
3170 if (hdev->acl_cnt > hdev->acl_pkts)
3171 hdev->acl_cnt = hdev->acl_pkts;
3172 }
3173 break;
3174
3175 case SCO_LINK:
3176 hdev->sco_cnt += count;
3177 if (hdev->sco_cnt > hdev->sco_pkts)
3178 hdev->sco_cnt = hdev->sco_pkts;
3179 break;
3180
3181 default:
3182 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3183 break;
3184 }
3185 }
3186
3187 queue_work(hdev->workqueue, &hdev->tx_work);
3188 }
3189
3190 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3191 __u16 handle)
3192 {
3193 struct hci_chan *chan;
3194
3195 switch (hdev->dev_type) {
3196 case HCI_BREDR:
3197 return hci_conn_hash_lookup_handle(hdev, handle);
3198 case HCI_AMP:
3199 chan = hci_chan_lookup_handle(hdev, handle);
3200 if (chan)
3201 return chan->conn;
3202 break;
3203 default:
3204 BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type);
3205 break;
3206 }
3207
3208 return NULL;
3209 }
3210
3211 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3212 {
3213 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3214 int i;
3215
3216 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3217 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3218 return;
3219 }
3220
3221 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3222 ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3223 BT_DBG("%s bad parameters", hdev->name);
3224 return;
3225 }
3226
3227 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3228 ev->num_hndl);
3229
3230 for (i = 0; i < ev->num_hndl; i++) {
3231 struct hci_comp_blocks_info *info = &ev->handles[i];
3232 struct hci_conn *conn = NULL;
3233 __u16 handle, block_count;
3234
3235 handle = __le16_to_cpu(info->handle);
3236 block_count = __le16_to_cpu(info->blocks);
3237
3238 conn = __hci_conn_lookup_handle(hdev, handle);
3239 if (!conn)
3240 continue;
3241
3242 conn->sent -= block_count;
3243
3244 switch (conn->type) {
3245 case ACL_LINK:
3246 case AMP_LINK:
3247 hdev->block_cnt += block_count;
3248 if (hdev->block_cnt > hdev->num_blocks)
3249 hdev->block_cnt = hdev->num_blocks;
3250 break;
3251
3252 default:
3253 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3254 break;
3255 }
3256 }
3257
3258 queue_work(hdev->workqueue, &hdev->tx_work);
3259 }
3260
3261 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3262 {
3263 struct hci_ev_mode_change *ev = (void *) skb->data;
3264 struct hci_conn *conn;
3265
3266 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3267
3268 hci_dev_lock(hdev);
3269
3270 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3271 if (conn) {
3272 conn->mode = ev->mode;
3273
3274 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3275 &conn->flags)) {
3276 if (conn->mode == HCI_CM_ACTIVE)
3277 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3278 else
3279 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3280 }
3281
3282 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3283 hci_sco_setup(conn, ev->status);
3284 }
3285
3286 hci_dev_unlock(hdev);
3287 }
3288
3289 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3290 {
3291 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3292 struct hci_conn *conn;
3293
3294 BT_DBG("%s", hdev->name);
3295
3296 hci_dev_lock(hdev);
3297
3298 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3299 if (!conn)
3300 goto unlock;
3301
3302 if (conn->state == BT_CONNECTED) {
3303 hci_conn_hold(conn);
3304 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3305 hci_conn_drop(conn);
3306 }
3307
3308 if (!test_bit(HCI_BONDABLE, &hdev->dev_flags) &&
3309 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3310 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3311 sizeof(ev->bdaddr), &ev->bdaddr);
3312 } else if (test_bit(HCI_MGMT, &hdev->dev_flags)) {
3313 u8 secure;
3314
3315 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3316 secure = 1;
3317 else
3318 secure = 0;
3319
3320 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3321 }
3322
3323 unlock:
3324 hci_dev_unlock(hdev);
3325 }
3326
3327 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
3328 {
3329 if (key_type == HCI_LK_CHANGED_COMBINATION)
3330 return;
3331
3332 conn->pin_length = pin_len;
3333 conn->key_type = key_type;
3334
3335 switch (key_type) {
3336 case HCI_LK_LOCAL_UNIT:
3337 case HCI_LK_REMOTE_UNIT:
3338 case HCI_LK_DEBUG_COMBINATION:
3339 return;
3340 case HCI_LK_COMBINATION:
3341 if (pin_len == 16)
3342 conn->pending_sec_level = BT_SECURITY_HIGH;
3343 else
3344 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3345 break;
3346 case HCI_LK_UNAUTH_COMBINATION_P192:
3347 case HCI_LK_UNAUTH_COMBINATION_P256:
3348 conn->pending_sec_level = BT_SECURITY_MEDIUM;
3349 break;
3350 case HCI_LK_AUTH_COMBINATION_P192:
3351 conn->pending_sec_level = BT_SECURITY_HIGH;
3352 break;
3353 case HCI_LK_AUTH_COMBINATION_P256:
3354 conn->pending_sec_level = BT_SECURITY_FIPS;
3355 break;
3356 }
3357 }
3358
3359 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3360 {
3361 struct hci_ev_link_key_req *ev = (void *) skb->data;
3362 struct hci_cp_link_key_reply cp;
3363 struct hci_conn *conn;
3364 struct link_key *key;
3365
3366 BT_DBG("%s", hdev->name);
3367
3368 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3369 return;
3370
3371 hci_dev_lock(hdev);
3372
3373 key = hci_find_link_key(hdev, &ev->bdaddr);
3374 if (!key) {
3375 BT_DBG("%s link key not found for %pMR", hdev->name,
3376 &ev->bdaddr);
3377 goto not_found;
3378 }
3379
3380 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3381 &ev->bdaddr);
3382
3383 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3384 if (conn) {
3385 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3386
3387 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3388 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3389 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3390 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3391 goto not_found;
3392 }
3393
3394 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3395 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3396 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3397 BT_DBG("%s ignoring key unauthenticated for high security",
3398 hdev->name);
3399 goto not_found;
3400 }
3401
3402 conn_set_key(conn, key->type, key->pin_len);
3403 }
3404
3405 bacpy(&cp.bdaddr, &ev->bdaddr);
3406 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3407
3408 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3409
3410 hci_dev_unlock(hdev);
3411
3412 return;
3413
3414 not_found:
3415 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3416 hci_dev_unlock(hdev);
3417 }
3418
3419 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3420 {
3421 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3422 struct hci_conn *conn;
3423 struct link_key *key;
3424 bool persistent;
3425 u8 pin_len = 0;
3426
3427 BT_DBG("%s", hdev->name);
3428
3429 hci_dev_lock(hdev);
3430
3431 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3432 if (!conn)
3433 goto unlock;
3434
3435 hci_conn_hold(conn);
3436 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3437 hci_conn_drop(conn);
3438
3439 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3440 conn_set_key(conn, ev->key_type, conn->pin_length);
3441
3442 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3443 goto unlock;
3444
3445 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3446 ev->key_type, pin_len, &persistent);
3447 if (!key)
3448 goto unlock;
3449
3450 /* Update connection information since adding the key will have
3451 * fixed up the type in the case of changed combination keys.
3452 */
3453 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
3454 conn_set_key(conn, key->type, key->pin_len);
3455
3456 mgmt_new_link_key(hdev, key, persistent);
3457
3458 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3459 * is set. If it's not set simply remove the key from the kernel
3460 * list (we've still notified user space about it but with
3461 * store_hint being 0).
3462 */
3463 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3464 !test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags)) {
3465 list_del_rcu(&key->list);
3466 kfree_rcu(key, rcu);
3467 goto unlock;
3468 }
3469
3470 if (persistent)
3471 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3472 else
3473 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3474
3475 unlock:
3476 hci_dev_unlock(hdev);
3477 }
3478
3479 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3480 {
3481 struct hci_ev_clock_offset *ev = (void *) skb->data;
3482 struct hci_conn *conn;
3483
3484 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3485
3486 hci_dev_lock(hdev);
3487
3488 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3489 if (conn && !ev->status) {
3490 struct inquiry_entry *ie;
3491
3492 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3493 if (ie) {
3494 ie->data.clock_offset = ev->clock_offset;
3495 ie->timestamp = jiffies;
3496 }
3497 }
3498
3499 hci_dev_unlock(hdev);
3500 }
3501
3502 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3503 {
3504 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
3505 struct hci_conn *conn;
3506
3507 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3508
3509 hci_dev_lock(hdev);
3510
3511 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3512 if (conn && !ev->status)
3513 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
3514
3515 hci_dev_unlock(hdev);
3516 }
3517
3518 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3519 {
3520 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3521 struct inquiry_entry *ie;
3522
3523 BT_DBG("%s", hdev->name);
3524
3525 hci_dev_lock(hdev);
3526
3527 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3528 if (ie) {
3529 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
3530 ie->timestamp = jiffies;
3531 }
3532
3533 hci_dev_unlock(hdev);
3534 }
3535
3536 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
3537 struct sk_buff *skb)
3538 {
3539 struct inquiry_data data;
3540 int num_rsp = *((__u8 *) skb->data);
3541
3542 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3543
3544 if (!num_rsp)
3545 return;
3546
3547 if (test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags))
3548 return;
3549
3550 hci_dev_lock(hdev);
3551
3552 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3553 struct inquiry_info_with_rssi_and_pscan_mode *info;
3554 info = (void *) (skb->data + 1);
3555
3556 for (; num_rsp; num_rsp--, info++) {
3557 u32 flags;
3558
3559 bacpy(&data.bdaddr, &info->bdaddr);
3560 data.pscan_rep_mode = info->pscan_rep_mode;
3561 data.pscan_period_mode = info->pscan_period_mode;
3562 data.pscan_mode = info->pscan_mode;
3563 memcpy(data.dev_class, info->dev_class, 3);
3564 data.clock_offset = info->clock_offset;
3565 data.rssi = info->rssi;
3566 data.ssp_mode = 0x00;
3567
3568 flags = hci_inquiry_cache_update(hdev, &data, false);
3569
3570 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3571 info->dev_class, info->rssi,
3572 flags, NULL, 0, NULL, 0);
3573 }
3574 } else {
3575 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
3576
3577 for (; num_rsp; num_rsp--, info++) {
3578 u32 flags;
3579
3580 bacpy(&data.bdaddr, &info->bdaddr);
3581 data.pscan_rep_mode = info->pscan_rep_mode;
3582 data.pscan_period_mode = info->pscan_period_mode;
3583 data.pscan_mode = 0x00;
3584 memcpy(data.dev_class, info->dev_class, 3);
3585 data.clock_offset = info->clock_offset;
3586 data.rssi = info->rssi;
3587 data.ssp_mode = 0x00;
3588
3589 flags = hci_inquiry_cache_update(hdev, &data, false);
3590
3591 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3592 info->dev_class, info->rssi,
3593 flags, NULL, 0, NULL, 0);
3594 }
3595 }
3596
3597 hci_dev_unlock(hdev);
3598 }
3599
3600 static void hci_remote_ext_features_evt(struct hci_dev *hdev,
3601 struct sk_buff *skb)
3602 {
3603 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
3604 struct hci_conn *conn;
3605
3606 BT_DBG("%s", hdev->name);
3607
3608 hci_dev_lock(hdev);
3609
3610 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3611 if (!conn)
3612 goto unlock;
3613
3614 if (ev->page < HCI_MAX_PAGES)
3615 memcpy(conn->features[ev->page], ev->features, 8);
3616
3617 if (!ev->status && ev->page == 0x01) {
3618 struct inquiry_entry *ie;
3619
3620 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3621 if (ie)
3622 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3623
3624 if (ev->features[0] & LMP_HOST_SSP) {
3625 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3626 } else {
3627 /* It is mandatory by the Bluetooth specification that
3628 * Extended Inquiry Results are only used when Secure
3629 * Simple Pairing is enabled, but some devices violate
3630 * this.
3631 *
3632 * To make these devices work, the internal SSP
3633 * enabled flag needs to be cleared if the remote host
3634 * features do not indicate SSP support */
3635 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3636 }
3637
3638 if (ev->features[0] & LMP_HOST_SC)
3639 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3640 }
3641
3642 if (conn->state != BT_CONFIG)
3643 goto unlock;
3644
3645 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3646 struct hci_cp_remote_name_req cp;
3647 memset(&cp, 0, sizeof(cp));
3648 bacpy(&cp.bdaddr, &conn->dst);
3649 cp.pscan_rep_mode = 0x02;
3650 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3651 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3652 mgmt_device_connected(hdev, conn, 0, NULL, 0);
3653
3654 if (!hci_outgoing_auth_needed(hdev, conn)) {
3655 conn->state = BT_CONNECTED;
3656 hci_proto_connect_cfm(conn, ev->status);
3657 hci_conn_drop(conn);
3658 }
3659
3660 unlock:
3661 hci_dev_unlock(hdev);
3662 }
3663
3664 static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
3665 struct sk_buff *skb)
3666 {
3667 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
3668 struct hci_conn *conn;
3669
3670 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3671
3672 hci_dev_lock(hdev);
3673
3674 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3675 if (!conn) {
3676 if (ev->link_type == ESCO_LINK)
3677 goto unlock;
3678
3679 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
3680 if (!conn)
3681 goto unlock;
3682
3683 conn->type = SCO_LINK;
3684 }
3685
3686 switch (ev->status) {
3687 case 0x00:
3688 conn->handle = __le16_to_cpu(ev->handle);
3689 conn->state = BT_CONNECTED;
3690
3691 hci_debugfs_create_conn(conn);
3692 hci_conn_add_sysfs(conn);
3693 break;
3694
3695 case 0x10: /* Connection Accept Timeout */
3696 case 0x0d: /* Connection Rejected due to Limited Resources */
3697 case 0x11: /* Unsupported Feature or Parameter Value */
3698 case 0x1c: /* SCO interval rejected */
3699 case 0x1a: /* Unsupported Remote Feature */
3700 case 0x1f: /* Unspecified error */
3701 case 0x20: /* Unsupported LMP Parameter value */
3702 if (conn->out) {
3703 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
3704 (hdev->esco_type & EDR_ESCO_MASK);
3705 if (hci_setup_sync(conn, conn->link->handle))
3706 goto unlock;
3707 }
3708 /* fall through */
3709
3710 default:
3711 conn->state = BT_CLOSED;
3712 break;
3713 }
3714
3715 hci_proto_connect_cfm(conn, ev->status);
3716 if (ev->status)
3717 hci_conn_del(conn);
3718
3719 unlock:
3720 hci_dev_unlock(hdev);
3721 }
3722
3723 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
3724 {
3725 size_t parsed = 0;
3726
3727 while (parsed < eir_len) {
3728 u8 field_len = eir[0];
3729
3730 if (field_len == 0)
3731 return parsed;
3732
3733 parsed += field_len + 1;
3734 eir += field_len + 1;
3735 }
3736
3737 return eir_len;
3738 }
3739
3740 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
3741 struct sk_buff *skb)
3742 {
3743 struct inquiry_data data;
3744 struct extended_inquiry_info *info = (void *) (skb->data + 1);
3745 int num_rsp = *((__u8 *) skb->data);
3746 size_t eir_len;
3747
3748 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3749
3750 if (!num_rsp)
3751 return;
3752
3753 if (test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags))
3754 return;
3755
3756 hci_dev_lock(hdev);
3757
3758 for (; num_rsp; num_rsp--, info++) {
3759 u32 flags;
3760 bool name_known;
3761
3762 bacpy(&data.bdaddr, &info->bdaddr);
3763 data.pscan_rep_mode = info->pscan_rep_mode;
3764 data.pscan_period_mode = info->pscan_period_mode;
3765 data.pscan_mode = 0x00;
3766 memcpy(data.dev_class, info->dev_class, 3);
3767 data.clock_offset = info->clock_offset;
3768 data.rssi = info->rssi;
3769 data.ssp_mode = 0x01;
3770
3771 if (test_bit(HCI_MGMT, &hdev->dev_flags))
3772 name_known = eir_has_data_type(info->data,
3773 sizeof(info->data),
3774 EIR_NAME_COMPLETE);
3775 else
3776 name_known = true;
3777
3778 flags = hci_inquiry_cache_update(hdev, &data, name_known);
3779
3780 eir_len = eir_get_length(info->data, sizeof(info->data));
3781
3782 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3783 info->dev_class, info->rssi,
3784 flags, info->data, eir_len, NULL, 0);
3785 }
3786
3787 hci_dev_unlock(hdev);
3788 }
3789
3790 static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
3791 struct sk_buff *skb)
3792 {
3793 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
3794 struct hci_conn *conn;
3795
3796 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3797 __le16_to_cpu(ev->handle));
3798
3799 hci_dev_lock(hdev);
3800
3801 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3802 if (!conn)
3803 goto unlock;
3804
3805 /* For BR/EDR the necessary steps are taken through the
3806 * auth_complete event.
3807 */
3808 if (conn->type != LE_LINK)
3809 goto unlock;
3810
3811 if (!ev->status)
3812 conn->sec_level = conn->pending_sec_level;
3813
3814 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3815
3816 if (ev->status && conn->state == BT_CONNECTED) {
3817 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3818 hci_conn_drop(conn);
3819 goto unlock;
3820 }
3821
3822 if (conn->state == BT_CONFIG) {
3823 if (!ev->status)
3824 conn->state = BT_CONNECTED;
3825
3826 hci_proto_connect_cfm(conn, ev->status);
3827 hci_conn_drop(conn);
3828 } else {
3829 hci_auth_cfm(conn, ev->status);
3830
3831 hci_conn_hold(conn);
3832 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3833 hci_conn_drop(conn);
3834 }
3835
3836 unlock:
3837 hci_dev_unlock(hdev);
3838 }
3839
3840 static u8 hci_get_auth_req(struct hci_conn *conn)
3841 {
3842 /* If remote requests no-bonding follow that lead */
3843 if (conn->remote_auth == HCI_AT_NO_BONDING ||
3844 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
3845 return conn->remote_auth | (conn->auth_type & 0x01);
3846
3847 /* If both remote and local have enough IO capabilities, require
3848 * MITM protection
3849 */
3850 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
3851 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
3852 return conn->remote_auth | 0x01;
3853
3854 /* No MITM protection possible so ignore remote requirement */
3855 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
3856 }
3857
3858 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3859 {
3860 struct hci_ev_io_capa_request *ev = (void *) skb->data;
3861 struct hci_conn *conn;
3862
3863 BT_DBG("%s", hdev->name);
3864
3865 hci_dev_lock(hdev);
3866
3867 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3868 if (!conn)
3869 goto unlock;
3870
3871 hci_conn_hold(conn);
3872
3873 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3874 goto unlock;
3875
3876 /* Allow pairing if we're pairable, the initiators of the
3877 * pairing or if the remote is not requesting bonding.
3878 */
3879 if (test_bit(HCI_BONDABLE, &hdev->dev_flags) ||
3880 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
3881 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
3882 struct hci_cp_io_capability_reply cp;
3883
3884 bacpy(&cp.bdaddr, &ev->bdaddr);
3885 /* Change the IO capability from KeyboardDisplay
3886 * to DisplayYesNo as it is not supported by BT spec. */
3887 cp.capability = (conn->io_capability == 0x04) ?
3888 HCI_IO_DISPLAY_YESNO : conn->io_capability;
3889
3890 /* If we are initiators, there is no remote information yet */
3891 if (conn->remote_auth == 0xff) {
3892 /* Request MITM protection if our IO caps allow it
3893 * except for the no-bonding case.
3894 */
3895 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
3896 conn->auth_type != HCI_AT_NO_BONDING)
3897 conn->auth_type |= 0x01;
3898 } else {
3899 conn->auth_type = hci_get_auth_req(conn);
3900 }
3901
3902 /* If we're not bondable, force one of the non-bondable
3903 * authentication requirement values.
3904 */
3905 if (!test_bit(HCI_BONDABLE, &hdev->dev_flags))
3906 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
3907
3908 cp.authentication = conn->auth_type;
3909
3910 if (hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR) &&
3911 (conn->out || test_bit(HCI_CONN_REMOTE_OOB, &conn->flags)))
3912 cp.oob_data = 0x01;
3913 else
3914 cp.oob_data = 0x00;
3915
3916 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
3917 sizeof(cp), &cp);
3918 } else {
3919 struct hci_cp_io_capability_neg_reply cp;
3920
3921 bacpy(&cp.bdaddr, &ev->bdaddr);
3922 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
3923
3924 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
3925 sizeof(cp), &cp);
3926 }
3927
3928 unlock:
3929 hci_dev_unlock(hdev);
3930 }
3931
3932 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
3933 {
3934 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
3935 struct hci_conn *conn;
3936
3937 BT_DBG("%s", hdev->name);
3938
3939 hci_dev_lock(hdev);
3940
3941 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3942 if (!conn)
3943 goto unlock;
3944
3945 conn->remote_cap = ev->capability;
3946 conn->remote_auth = ev->authentication;
3947 if (ev->oob_data)
3948 set_bit(HCI_CONN_REMOTE_OOB, &conn->flags);
3949
3950 unlock:
3951 hci_dev_unlock(hdev);
3952 }
3953
3954 static void hci_user_confirm_request_evt(struct hci_dev *hdev,
3955 struct sk_buff *skb)
3956 {
3957 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
3958 int loc_mitm, rem_mitm, confirm_hint = 0;
3959 struct hci_conn *conn;
3960
3961 BT_DBG("%s", hdev->name);
3962
3963 hci_dev_lock(hdev);
3964
3965 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3966 goto unlock;
3967
3968 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3969 if (!conn)
3970 goto unlock;
3971
3972 loc_mitm = (conn->auth_type & 0x01);
3973 rem_mitm = (conn->remote_auth & 0x01);
3974
3975 /* If we require MITM but the remote device can't provide that
3976 * (it has NoInputNoOutput) then reject the confirmation
3977 * request. We check the security level here since it doesn't
3978 * necessarily match conn->auth_type.
3979 */
3980 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
3981 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
3982 BT_DBG("Rejecting request: remote device can't provide MITM");
3983 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
3984 sizeof(ev->bdaddr), &ev->bdaddr);
3985 goto unlock;
3986 }
3987
3988 /* If no side requires MITM protection; auto-accept */
3989 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
3990 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
3991
3992 /* If we're not the initiators request authorization to
3993 * proceed from user space (mgmt_user_confirm with
3994 * confirm_hint set to 1). The exception is if neither
3995 * side had MITM or if the local IO capability is
3996 * NoInputNoOutput, in which case we do auto-accept
3997 */
3998 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
3999 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4000 (loc_mitm || rem_mitm)) {
4001 BT_DBG("Confirming auto-accept as acceptor");
4002 confirm_hint = 1;
4003 goto confirm;
4004 }
4005
4006 BT_DBG("Auto-accept of user confirmation with %ums delay",
4007 hdev->auto_accept_delay);
4008
4009 if (hdev->auto_accept_delay > 0) {
4010 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4011 queue_delayed_work(conn->hdev->workqueue,
4012 &conn->auto_accept_work, delay);
4013 goto unlock;
4014 }
4015
4016 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4017 sizeof(ev->bdaddr), &ev->bdaddr);
4018 goto unlock;
4019 }
4020
4021 confirm:
4022 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
4023 le32_to_cpu(ev->passkey), confirm_hint);
4024
4025 unlock:
4026 hci_dev_unlock(hdev);
4027 }
4028
4029 static void hci_user_passkey_request_evt(struct hci_dev *hdev,
4030 struct sk_buff *skb)
4031 {
4032 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
4033
4034 BT_DBG("%s", hdev->name);
4035
4036 if (test_bit(HCI_MGMT, &hdev->dev_flags))
4037 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4038 }
4039
4040 static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
4041 struct sk_buff *skb)
4042 {
4043 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
4044 struct hci_conn *conn;
4045
4046 BT_DBG("%s", hdev->name);
4047
4048 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4049 if (!conn)
4050 return;
4051
4052 conn->passkey_notify = __le32_to_cpu(ev->passkey);
4053 conn->passkey_entered = 0;
4054
4055 if (test_bit(HCI_MGMT, &hdev->dev_flags))
4056 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4057 conn->dst_type, conn->passkey_notify,
4058 conn->passkey_entered);
4059 }
4060
4061 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
4062 {
4063 struct hci_ev_keypress_notify *ev = (void *) skb->data;
4064 struct hci_conn *conn;
4065
4066 BT_DBG("%s", hdev->name);
4067
4068 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4069 if (!conn)
4070 return;
4071
4072 switch (ev->type) {
4073 case HCI_KEYPRESS_STARTED:
4074 conn->passkey_entered = 0;
4075 return;
4076
4077 case HCI_KEYPRESS_ENTERED:
4078 conn->passkey_entered++;
4079 break;
4080
4081 case HCI_KEYPRESS_ERASED:
4082 conn->passkey_entered--;
4083 break;
4084
4085 case HCI_KEYPRESS_CLEARED:
4086 conn->passkey_entered = 0;
4087 break;
4088
4089 case HCI_KEYPRESS_COMPLETED:
4090 return;
4091 }
4092
4093 if (test_bit(HCI_MGMT, &hdev->dev_flags))
4094 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
4095 conn->dst_type, conn->passkey_notify,
4096 conn->passkey_entered);
4097 }
4098
4099 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
4100 struct sk_buff *skb)
4101 {
4102 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
4103 struct hci_conn *conn;
4104
4105 BT_DBG("%s", hdev->name);
4106
4107 hci_dev_lock(hdev);
4108
4109 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4110 if (!conn)
4111 goto unlock;
4112
4113 /* Reset the authentication requirement to unknown */
4114 conn->remote_auth = 0xff;
4115
4116 /* To avoid duplicate auth_failed events to user space we check
4117 * the HCI_CONN_AUTH_PEND flag which will be set if we
4118 * initiated the authentication. A traditional auth_complete
4119 * event gets always produced as initiator and is also mapped to
4120 * the mgmt_auth_failed event */
4121 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4122 mgmt_auth_failed(conn, ev->status);
4123
4124 hci_conn_drop(conn);
4125
4126 unlock:
4127 hci_dev_unlock(hdev);
4128 }
4129
4130 static void hci_remote_host_features_evt(struct hci_dev *hdev,
4131 struct sk_buff *skb)
4132 {
4133 struct hci_ev_remote_host_features *ev = (void *) skb->data;
4134 struct inquiry_entry *ie;
4135 struct hci_conn *conn;
4136
4137 BT_DBG("%s", hdev->name);
4138
4139 hci_dev_lock(hdev);
4140
4141 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4142 if (conn)
4143 memcpy(conn->features[1], ev->features, 8);
4144
4145 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4146 if (ie)
4147 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4148
4149 hci_dev_unlock(hdev);
4150 }
4151
4152 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
4153 struct sk_buff *skb)
4154 {
4155 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
4156 struct oob_data *data;
4157
4158 BT_DBG("%s", hdev->name);
4159
4160 hci_dev_lock(hdev);
4161
4162 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
4163 goto unlock;
4164
4165 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4166 if (data) {
4167 if (bredr_sc_enabled(hdev)) {
4168 struct hci_cp_remote_oob_ext_data_reply cp;
4169
4170 bacpy(&cp.bdaddr, &ev->bdaddr);
4171 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
4172 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4173 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
4174 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
4175
4176 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
4177 sizeof(cp), &cp);
4178 } else {
4179 struct hci_cp_remote_oob_data_reply cp;
4180
4181 bacpy(&cp.bdaddr, &ev->bdaddr);
4182 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
4183 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
4184
4185 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4186 sizeof(cp), &cp);
4187 }
4188 } else {
4189 struct hci_cp_remote_oob_data_neg_reply cp;
4190
4191 bacpy(&cp.bdaddr, &ev->bdaddr);
4192 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
4193 sizeof(cp), &cp);
4194 }
4195
4196 unlock:
4197 hci_dev_unlock(hdev);
4198 }
4199
4200 static void hci_phy_link_complete_evt(struct hci_dev *hdev,
4201 struct sk_buff *skb)
4202 {
4203 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
4204 struct hci_conn *hcon, *bredr_hcon;
4205
4206 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
4207 ev->status);
4208
4209 hci_dev_lock(hdev);
4210
4211 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4212 if (!hcon) {
4213 hci_dev_unlock(hdev);
4214 return;
4215 }
4216
4217 if (ev->status) {
4218 hci_conn_del(hcon);
4219 hci_dev_unlock(hdev);
4220 return;
4221 }
4222
4223 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4224
4225 hcon->state = BT_CONNECTED;
4226 bacpy(&hcon->dst, &bredr_hcon->dst);
4227
4228 hci_conn_hold(hcon);
4229 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4230 hci_conn_drop(hcon);
4231
4232 hci_debugfs_create_conn(hcon);
4233 hci_conn_add_sysfs(hcon);
4234
4235 amp_physical_cfm(bredr_hcon, hcon);
4236
4237 hci_dev_unlock(hdev);
4238 }
4239
4240 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4241 {
4242 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4243 struct hci_conn *hcon;
4244 struct hci_chan *hchan;
4245 struct amp_mgr *mgr;
4246
4247 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4248 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4249 ev->status);
4250
4251 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4252 if (!hcon)
4253 return;
4254
4255 /* Create AMP hchan */
4256 hchan = hci_chan_create(hcon);
4257 if (!hchan)
4258 return;
4259
4260 hchan->handle = le16_to_cpu(ev->handle);
4261
4262 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4263
4264 mgr = hcon->amp_mgr;
4265 if (mgr && mgr->bredr_chan) {
4266 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4267
4268 l2cap_chan_lock(bredr_chan);
4269
4270 bredr_chan->conn->mtu = hdev->block_mtu;
4271 l2cap_logical_cfm(bredr_chan, hchan, 0);
4272 hci_conn_hold(hcon);
4273
4274 l2cap_chan_unlock(bredr_chan);
4275 }
4276 }
4277
4278 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4279 struct sk_buff *skb)
4280 {
4281 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4282 struct hci_chan *hchan;
4283
4284 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4285 le16_to_cpu(ev->handle), ev->status);
4286
4287 if (ev->status)
4288 return;
4289
4290 hci_dev_lock(hdev);
4291
4292 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4293 if (!hchan)
4294 goto unlock;
4295
4296 amp_destroy_logical_link(hchan, ev->reason);
4297
4298 unlock:
4299 hci_dev_unlock(hdev);
4300 }
4301
4302 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4303 struct sk_buff *skb)
4304 {
4305 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4306 struct hci_conn *hcon;
4307
4308 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4309
4310 if (ev->status)
4311 return;
4312
4313 hci_dev_lock(hdev);
4314
4315 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4316 if (hcon) {
4317 hcon->state = BT_CLOSED;
4318 hci_conn_del(hcon);
4319 }
4320
4321 hci_dev_unlock(hdev);
4322 }
4323
4324 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4325 {
4326 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4327 struct hci_conn_params *params;
4328 struct hci_conn *conn;
4329 struct smp_irk *irk;
4330 u8 addr_type;
4331
4332 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4333
4334 hci_dev_lock(hdev);
4335
4336 /* All controllers implicitly stop advertising in the event of a
4337 * connection, so ensure that the state bit is cleared.
4338 */
4339 clear_bit(HCI_LE_ADV, &hdev->dev_flags);
4340
4341 conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
4342 if (!conn) {
4343 conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4344 if (!conn) {
4345 BT_ERR("No memory for new connection");
4346 goto unlock;
4347 }
4348
4349 conn->dst_type = ev->bdaddr_type;
4350
4351 /* If we didn't have a hci_conn object previously
4352 * but we're in master role this must be something
4353 * initiated using a white list. Since white list based
4354 * connections are not "first class citizens" we don't
4355 * have full tracking of them. Therefore, we go ahead
4356 * with a "best effort" approach of determining the
4357 * initiator address based on the HCI_PRIVACY flag.
4358 */
4359 if (conn->out) {
4360 conn->resp_addr_type = ev->bdaddr_type;
4361 bacpy(&conn->resp_addr, &ev->bdaddr);
4362 if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) {
4363 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4364 bacpy(&conn->init_addr, &hdev->rpa);
4365 } else {
4366 hci_copy_identity_address(hdev,
4367 &conn->init_addr,
4368 &conn->init_addr_type);
4369 }
4370 }
4371 } else {
4372 cancel_delayed_work(&conn->le_conn_timeout);
4373 }
4374
4375 if (!conn->out) {
4376 /* Set the responder (our side) address type based on
4377 * the advertising address type.
4378 */
4379 conn->resp_addr_type = hdev->adv_addr_type;
4380 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
4381 bacpy(&conn->resp_addr, &hdev->random_addr);
4382 else
4383 bacpy(&conn->resp_addr, &hdev->bdaddr);
4384
4385 conn->init_addr_type = ev->bdaddr_type;
4386 bacpy(&conn->init_addr, &ev->bdaddr);
4387
4388 /* For incoming connections, set the default minimum
4389 * and maximum connection interval. They will be used
4390 * to check if the parameters are in range and if not
4391 * trigger the connection update procedure.
4392 */
4393 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4394 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4395 }
4396
4397 /* Lookup the identity address from the stored connection
4398 * address and address type.
4399 *
4400 * When establishing connections to an identity address, the
4401 * connection procedure will store the resolvable random
4402 * address first. Now if it can be converted back into the
4403 * identity address, start using the identity address from
4404 * now on.
4405 */
4406 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4407 if (irk) {
4408 bacpy(&conn->dst, &irk->bdaddr);
4409 conn->dst_type = irk->addr_type;
4410 }
4411
4412 if (ev->status) {
4413 hci_le_conn_failed(conn, ev->status);
4414 goto unlock;
4415 }
4416
4417 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
4418 addr_type = BDADDR_LE_PUBLIC;
4419 else
4420 addr_type = BDADDR_LE_RANDOM;
4421
4422 /* Drop the connection if the device is blocked */
4423 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
4424 hci_conn_drop(conn);
4425 goto unlock;
4426 }
4427
4428 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4429 mgmt_device_connected(hdev, conn, 0, NULL, 0);
4430
4431 conn->sec_level = BT_SECURITY_LOW;
4432 conn->handle = __le16_to_cpu(ev->handle);
4433 conn->state = BT_CONNECTED;
4434
4435 conn->le_conn_interval = le16_to_cpu(ev->interval);
4436 conn->le_conn_latency = le16_to_cpu(ev->latency);
4437 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4438
4439 hci_debugfs_create_conn(conn);
4440 hci_conn_add_sysfs(conn);
4441
4442 hci_proto_connect_cfm(conn, ev->status);
4443
4444 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
4445 conn->dst_type);
4446 if (params) {
4447 list_del_init(&params->action);
4448 if (params->conn) {
4449 hci_conn_drop(params->conn);
4450 hci_conn_put(params->conn);
4451 params->conn = NULL;
4452 }
4453 }
4454
4455 unlock:
4456 hci_update_background_scan(hdev);
4457 hci_dev_unlock(hdev);
4458 }
4459
4460 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
4461 struct sk_buff *skb)
4462 {
4463 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
4464 struct hci_conn *conn;
4465
4466 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4467
4468 if (ev->status)
4469 return;
4470
4471 hci_dev_lock(hdev);
4472
4473 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4474 if (conn) {
4475 conn->le_conn_interval = le16_to_cpu(ev->interval);
4476 conn->le_conn_latency = le16_to_cpu(ev->latency);
4477 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4478 }
4479
4480 hci_dev_unlock(hdev);
4481 }
4482
4483 /* This function requires the caller holds hdev->lock */
4484 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
4485 bdaddr_t *addr,
4486 u8 addr_type, u8 adv_type)
4487 {
4488 struct hci_conn *conn;
4489 struct hci_conn_params *params;
4490
4491 /* If the event is not connectable don't proceed further */
4492 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4493 return NULL;
4494
4495 /* Ignore if the device is blocked */
4496 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4497 return NULL;
4498
4499 /* Most controller will fail if we try to create new connections
4500 * while we have an existing one in slave role.
4501 */
4502 if (hdev->conn_hash.le_num_slave > 0)
4503 return NULL;
4504
4505 /* If we're not connectable only connect devices that we have in
4506 * our pend_le_conns list.
4507 */
4508 params = hci_pend_le_action_lookup(&hdev->pend_le_conns,
4509 addr, addr_type);
4510 if (!params)
4511 return NULL;
4512
4513 switch (params->auto_connect) {
4514 case HCI_AUTO_CONN_DIRECT:
4515 /* Only devices advertising with ADV_DIRECT_IND are
4516 * triggering a connection attempt. This is allowing
4517 * incoming connections from slave devices.
4518 */
4519 if (adv_type != LE_ADV_DIRECT_IND)
4520 return NULL;
4521 break;
4522 case HCI_AUTO_CONN_ALWAYS:
4523 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
4524 * are triggering a connection attempt. This means
4525 * that incoming connectioms from slave device are
4526 * accepted and also outgoing connections to slave
4527 * devices are established when found.
4528 */
4529 break;
4530 default:
4531 return NULL;
4532 }
4533
4534 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4535 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER);
4536 if (!IS_ERR(conn)) {
4537 /* Store the pointer since we don't really have any
4538 * other owner of the object besides the params that
4539 * triggered it. This way we can abort the connection if
4540 * the parameters get removed and keep the reference
4541 * count consistent once the connection is established.
4542 */
4543 params->conn = hci_conn_get(conn);
4544 return conn;
4545 }
4546
4547 switch (PTR_ERR(conn)) {
4548 case -EBUSY:
4549 /* If hci_connect() returns -EBUSY it means there is already
4550 * an LE connection attempt going on. Since controllers don't
4551 * support more than one connection attempt at the time, we
4552 * don't consider this an error case.
4553 */
4554 break;
4555 default:
4556 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4557 return NULL;
4558 }
4559
4560 return NULL;
4561 }
4562
4563 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4564 u8 bdaddr_type, bdaddr_t *direct_addr,
4565 u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
4566 {
4567 struct discovery_state *d = &hdev->discovery;
4568 struct smp_irk *irk;
4569 struct hci_conn *conn;
4570 bool match;
4571 u32 flags;
4572
4573 /* If the direct address is present, then this report is from
4574 * a LE Direct Advertising Report event. In that case it is
4575 * important to see if the address is matching the local
4576 * controller address.
4577 */
4578 if (direct_addr) {
4579 /* Only resolvable random addresses are valid for these
4580 * kind of reports and others can be ignored.
4581 */
4582 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
4583 return;
4584
4585 /* If the controller is not using resolvable random
4586 * addresses, then this report can be ignored.
4587 */
4588 if (!test_bit(HCI_PRIVACY, &hdev->dev_flags))
4589 return;
4590
4591 /* If the local IRK of the controller does not match
4592 * with the resolvable random address provided, then
4593 * this report can be ignored.
4594 */
4595 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
4596 return;
4597 }
4598
4599 /* Check if we need to convert to identity address */
4600 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
4601 if (irk) {
4602 bdaddr = &irk->bdaddr;
4603 bdaddr_type = irk->addr_type;
4604 }
4605
4606 /* Check if we have been requested to connect to this device */
4607 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type);
4608 if (conn && type == LE_ADV_IND) {
4609 /* Store report for later inclusion by
4610 * mgmt_device_connected
4611 */
4612 memcpy(conn->le_adv_data, data, len);
4613 conn->le_adv_data_len = len;
4614 }
4615
4616 /* Passive scanning shouldn't trigger any device found events,
4617 * except for devices marked as CONN_REPORT for which we do send
4618 * device found events.
4619 */
4620 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4621 if (type == LE_ADV_DIRECT_IND)
4622 return;
4623
4624 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
4625 bdaddr, bdaddr_type))
4626 return;
4627
4628 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
4629 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4630 else
4631 flags = 0;
4632 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4633 rssi, flags, data, len, NULL, 0);
4634 return;
4635 }
4636
4637 /* When receiving non-connectable or scannable undirected
4638 * advertising reports, this means that the remote device is
4639 * not connectable and then clearly indicate this in the
4640 * device found event.
4641 *
4642 * When receiving a scan response, then there is no way to
4643 * know if the remote device is connectable or not. However
4644 * since scan responses are merged with a previously seen
4645 * advertising report, the flags field from that report
4646 * will be used.
4647 *
4648 * In the really unlikely case that a controller get confused
4649 * and just sends a scan response event, then it is marked as
4650 * not connectable as well.
4651 */
4652 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
4653 type == LE_ADV_SCAN_RSP)
4654 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4655 else
4656 flags = 0;
4657
4658 /* If there's nothing pending either store the data from this
4659 * event or send an immediate device found event if the data
4660 * should not be stored for later.
4661 */
4662 if (!has_pending_adv_report(hdev)) {
4663 /* If the report will trigger a SCAN_REQ store it for
4664 * later merging.
4665 */
4666 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4667 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4668 rssi, flags, data, len);
4669 return;
4670 }
4671
4672 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4673 rssi, flags, data, len, NULL, 0);
4674 return;
4675 }
4676
4677 /* Check if the pending report is for the same device as the new one */
4678 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
4679 bdaddr_type == d->last_adv_addr_type);
4680
4681 /* If the pending data doesn't match this report or this isn't a
4682 * scan response (e.g. we got a duplicate ADV_IND) then force
4683 * sending of the pending data.
4684 */
4685 if (type != LE_ADV_SCAN_RSP || !match) {
4686 /* Send out whatever is in the cache, but skip duplicates */
4687 if (!match)
4688 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4689 d->last_adv_addr_type, NULL,
4690 d->last_adv_rssi, d->last_adv_flags,
4691 d->last_adv_data,
4692 d->last_adv_data_len, NULL, 0);
4693
4694 /* If the new report will trigger a SCAN_REQ store it for
4695 * later merging.
4696 */
4697 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4698 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4699 rssi, flags, data, len);
4700 return;
4701 }
4702
4703 /* The advertising reports cannot be merged, so clear
4704 * the pending report and send out a device found event.
4705 */
4706 clear_pending_adv_report(hdev);
4707 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4708 rssi, flags, data, len, NULL, 0);
4709 return;
4710 }
4711
4712 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
4713 * the new event is a SCAN_RSP. We can therefore proceed with
4714 * sending a merged device found event.
4715 */
4716 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4717 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4718 d->last_adv_data, d->last_adv_data_len, data, len);
4719 clear_pending_adv_report(hdev);
4720 }
4721
4722 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4723 {
4724 u8 num_reports = skb->data[0];
4725 void *ptr = &skb->data[1];
4726
4727 hci_dev_lock(hdev);
4728
4729 while (num_reports--) {
4730 struct hci_ev_le_advertising_info *ev = ptr;
4731 s8 rssi;
4732
4733 rssi = ev->data[ev->length];
4734 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4735 ev->bdaddr_type, NULL, 0, rssi,
4736 ev->data, ev->length);
4737
4738 ptr += sizeof(*ev) + ev->length + 1;
4739 }
4740
4741 hci_dev_unlock(hdev);
4742 }
4743
4744 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4745 {
4746 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
4747 struct hci_cp_le_ltk_reply cp;
4748 struct hci_cp_le_ltk_neg_reply neg;
4749 struct hci_conn *conn;
4750 struct smp_ltk *ltk;
4751
4752 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
4753
4754 hci_dev_lock(hdev);
4755
4756 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4757 if (conn == NULL)
4758 goto not_found;
4759
4760 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
4761 if (!ltk)
4762 goto not_found;
4763
4764 if (smp_ltk_is_sc(ltk)) {
4765 /* With SC both EDiv and Rand are set to zero */
4766 if (ev->ediv || ev->rand)
4767 goto not_found;
4768 } else {
4769 /* For non-SC keys check that EDiv and Rand match */
4770 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
4771 goto not_found;
4772 }
4773
4774 memcpy(cp.ltk, ltk->val, sizeof(ltk->val));
4775 cp.handle = cpu_to_le16(conn->handle);
4776
4777 conn->pending_sec_level = smp_ltk_sec_level(ltk);
4778
4779 conn->enc_key_size = ltk->enc_size;
4780
4781 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
4782
4783 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
4784 * temporary key used to encrypt a connection following
4785 * pairing. It is used during the Encrypted Session Setup to
4786 * distribute the keys. Later, security can be re-established
4787 * using a distributed LTK.
4788 */
4789 if (ltk->type == SMP_STK) {
4790 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
4791 list_del_rcu(&ltk->list);
4792 kfree_rcu(ltk, rcu);
4793 } else {
4794 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
4795 }
4796
4797 hci_dev_unlock(hdev);
4798
4799 return;
4800
4801 not_found:
4802 neg.handle = ev->handle;
4803 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
4804 hci_dev_unlock(hdev);
4805 }
4806
4807 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
4808 u8 reason)
4809 {
4810 struct hci_cp_le_conn_param_req_neg_reply cp;
4811
4812 cp.handle = cpu_to_le16(handle);
4813 cp.reason = reason;
4814
4815 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
4816 &cp);
4817 }
4818
4819 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
4820 struct sk_buff *skb)
4821 {
4822 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
4823 struct hci_cp_le_conn_param_req_reply cp;
4824 struct hci_conn *hcon;
4825 u16 handle, min, max, latency, timeout;
4826
4827 handle = le16_to_cpu(ev->handle);
4828 min = le16_to_cpu(ev->interval_min);
4829 max = le16_to_cpu(ev->interval_max);
4830 latency = le16_to_cpu(ev->latency);
4831 timeout = le16_to_cpu(ev->timeout);
4832
4833 hcon = hci_conn_hash_lookup_handle(hdev, handle);
4834 if (!hcon || hcon->state != BT_CONNECTED)
4835 return send_conn_param_neg_reply(hdev, handle,
4836 HCI_ERROR_UNKNOWN_CONN_ID);
4837
4838 if (hci_check_conn_params(min, max, latency, timeout))
4839 return send_conn_param_neg_reply(hdev, handle,
4840 HCI_ERROR_INVALID_LL_PARAMS);
4841
4842 if (hcon->role == HCI_ROLE_MASTER) {
4843 struct hci_conn_params *params;
4844 u8 store_hint;
4845
4846 hci_dev_lock(hdev);
4847
4848 params = hci_conn_params_lookup(hdev, &hcon->dst,
4849 hcon->dst_type);
4850 if (params) {
4851 params->conn_min_interval = min;
4852 params->conn_max_interval = max;
4853 params->conn_latency = latency;
4854 params->supervision_timeout = timeout;
4855 store_hint = 0x01;
4856 } else{
4857 store_hint = 0x00;
4858 }
4859
4860 hci_dev_unlock(hdev);
4861
4862 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
4863 store_hint, min, max, latency, timeout);
4864 }
4865
4866 cp.handle = ev->handle;
4867 cp.interval_min = ev->interval_min;
4868 cp.interval_max = ev->interval_max;
4869 cp.latency = ev->latency;
4870 cp.timeout = ev->timeout;
4871 cp.min_ce_len = 0;
4872 cp.max_ce_len = 0;
4873
4874 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
4875 }
4876
4877 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
4878 struct sk_buff *skb)
4879 {
4880 u8 num_reports = skb->data[0];
4881 void *ptr = &skb->data[1];
4882
4883 hci_dev_lock(hdev);
4884
4885 while (num_reports--) {
4886 struct hci_ev_le_direct_adv_info *ev = ptr;
4887
4888 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4889 ev->bdaddr_type, &ev->direct_addr,
4890 ev->direct_addr_type, ev->rssi, NULL, 0);
4891
4892 ptr += sizeof(*ev);
4893 }
4894
4895 hci_dev_unlock(hdev);
4896 }
4897
4898 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
4899 {
4900 struct hci_ev_le_meta *le_ev = (void *) skb->data;
4901
4902 skb_pull(skb, sizeof(*le_ev));
4903
4904 switch (le_ev->subevent) {
4905 case HCI_EV_LE_CONN_COMPLETE:
4906 hci_le_conn_complete_evt(hdev, skb);
4907 break;
4908
4909 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
4910 hci_le_conn_update_complete_evt(hdev, skb);
4911 break;
4912
4913 case HCI_EV_LE_ADVERTISING_REPORT:
4914 hci_le_adv_report_evt(hdev, skb);
4915 break;
4916
4917 case HCI_EV_LE_LTK_REQ:
4918 hci_le_ltk_request_evt(hdev, skb);
4919 break;
4920
4921 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
4922 hci_le_remote_conn_param_req_evt(hdev, skb);
4923 break;
4924
4925 case HCI_EV_LE_DIRECT_ADV_REPORT:
4926 hci_le_direct_adv_report_evt(hdev, skb);
4927 break;
4928
4929 default:
4930 break;
4931 }
4932 }
4933
4934 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4935 {
4936 struct hci_ev_channel_selected *ev = (void *) skb->data;
4937 struct hci_conn *hcon;
4938
4939 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4940
4941 skb_pull(skb, sizeof(*ev));
4942
4943 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4944 if (!hcon)
4945 return;
4946
4947 amp_read_loc_assoc_final_data(hdev, hcon);
4948 }
4949
4950 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
4951 {
4952 struct hci_event_hdr *hdr = (void *) skb->data;
4953 __u8 event = hdr->evt;
4954
4955 hci_dev_lock(hdev);
4956
4957 /* Received events are (currently) only needed when a request is
4958 * ongoing so avoid unnecessary memory allocation.
4959 */
4960 if (hci_req_pending(hdev)) {
4961 kfree_skb(hdev->recv_evt);
4962 hdev->recv_evt = skb_clone(skb, GFP_KERNEL);
4963 }
4964
4965 hci_dev_unlock(hdev);
4966
4967 skb_pull(skb, HCI_EVENT_HDR_SIZE);
4968
4969 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) {
4970 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
4971 u16 opcode = __le16_to_cpu(cmd_hdr->opcode);
4972
4973 hci_req_cmd_complete(hdev, opcode, 0);
4974 }
4975
4976 switch (event) {
4977 case HCI_EV_INQUIRY_COMPLETE:
4978 hci_inquiry_complete_evt(hdev, skb);
4979 break;
4980
4981 case HCI_EV_INQUIRY_RESULT:
4982 hci_inquiry_result_evt(hdev, skb);
4983 break;
4984
4985 case HCI_EV_CONN_COMPLETE:
4986 hci_conn_complete_evt(hdev, skb);
4987 break;
4988
4989 case HCI_EV_CONN_REQUEST:
4990 hci_conn_request_evt(hdev, skb);
4991 break;
4992
4993 case HCI_EV_DISCONN_COMPLETE:
4994 hci_disconn_complete_evt(hdev, skb);
4995 break;
4996
4997 case HCI_EV_AUTH_COMPLETE:
4998 hci_auth_complete_evt(hdev, skb);
4999 break;
5000
5001 case HCI_EV_REMOTE_NAME:
5002 hci_remote_name_evt(hdev, skb);
5003 break;
5004
5005 case HCI_EV_ENCRYPT_CHANGE:
5006 hci_encrypt_change_evt(hdev, skb);
5007 break;
5008
5009 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
5010 hci_change_link_key_complete_evt(hdev, skb);
5011 break;
5012
5013 case HCI_EV_REMOTE_FEATURES:
5014 hci_remote_features_evt(hdev, skb);
5015 break;
5016
5017 case HCI_EV_CMD_COMPLETE:
5018 hci_cmd_complete_evt(hdev, skb);
5019 break;
5020
5021 case HCI_EV_CMD_STATUS:
5022 hci_cmd_status_evt(hdev, skb);
5023 break;
5024
5025 case HCI_EV_HARDWARE_ERROR:
5026 hci_hardware_error_evt(hdev, skb);
5027 break;
5028
5029 case HCI_EV_ROLE_CHANGE:
5030 hci_role_change_evt(hdev, skb);
5031 break;
5032
5033 case HCI_EV_NUM_COMP_PKTS:
5034 hci_num_comp_pkts_evt(hdev, skb);
5035 break;
5036
5037 case HCI_EV_MODE_CHANGE:
5038 hci_mode_change_evt(hdev, skb);
5039 break;
5040
5041 case HCI_EV_PIN_CODE_REQ:
5042 hci_pin_code_request_evt(hdev, skb);
5043 break;
5044
5045 case HCI_EV_LINK_KEY_REQ:
5046 hci_link_key_request_evt(hdev, skb);
5047 break;
5048
5049 case HCI_EV_LINK_KEY_NOTIFY:
5050 hci_link_key_notify_evt(hdev, skb);
5051 break;
5052
5053 case HCI_EV_CLOCK_OFFSET:
5054 hci_clock_offset_evt(hdev, skb);
5055 break;
5056
5057 case HCI_EV_PKT_TYPE_CHANGE:
5058 hci_pkt_type_change_evt(hdev, skb);
5059 break;
5060
5061 case HCI_EV_PSCAN_REP_MODE:
5062 hci_pscan_rep_mode_evt(hdev, skb);
5063 break;
5064
5065 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
5066 hci_inquiry_result_with_rssi_evt(hdev, skb);
5067 break;
5068
5069 case HCI_EV_REMOTE_EXT_FEATURES:
5070 hci_remote_ext_features_evt(hdev, skb);
5071 break;
5072
5073 case HCI_EV_SYNC_CONN_COMPLETE:
5074 hci_sync_conn_complete_evt(hdev, skb);
5075 break;
5076
5077 case HCI_EV_EXTENDED_INQUIRY_RESULT:
5078 hci_extended_inquiry_result_evt(hdev, skb);
5079 break;
5080
5081 case HCI_EV_KEY_REFRESH_COMPLETE:
5082 hci_key_refresh_complete_evt(hdev, skb);
5083 break;
5084
5085 case HCI_EV_IO_CAPA_REQUEST:
5086 hci_io_capa_request_evt(hdev, skb);
5087 break;
5088
5089 case HCI_EV_IO_CAPA_REPLY:
5090 hci_io_capa_reply_evt(hdev, skb);
5091 break;
5092
5093 case HCI_EV_USER_CONFIRM_REQUEST:
5094 hci_user_confirm_request_evt(hdev, skb);
5095 break;
5096
5097 case HCI_EV_USER_PASSKEY_REQUEST:
5098 hci_user_passkey_request_evt(hdev, skb);
5099 break;
5100
5101 case HCI_EV_USER_PASSKEY_NOTIFY:
5102 hci_user_passkey_notify_evt(hdev, skb);
5103 break;
5104
5105 case HCI_EV_KEYPRESS_NOTIFY:
5106 hci_keypress_notify_evt(hdev, skb);
5107 break;
5108
5109 case HCI_EV_SIMPLE_PAIR_COMPLETE:
5110 hci_simple_pair_complete_evt(hdev, skb);
5111 break;
5112
5113 case HCI_EV_REMOTE_HOST_FEATURES:
5114 hci_remote_host_features_evt(hdev, skb);
5115 break;
5116
5117 case HCI_EV_LE_META:
5118 hci_le_meta_evt(hdev, skb);
5119 break;
5120
5121 case HCI_EV_CHANNEL_SELECTED:
5122 hci_chan_selected_evt(hdev, skb);
5123 break;
5124
5125 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
5126 hci_remote_oob_data_request_evt(hdev, skb);
5127 break;
5128
5129 case HCI_EV_PHY_LINK_COMPLETE:
5130 hci_phy_link_complete_evt(hdev, skb);
5131 break;
5132
5133 case HCI_EV_LOGICAL_LINK_COMPLETE:
5134 hci_loglink_complete_evt(hdev, skb);
5135 break;
5136
5137 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
5138 hci_disconn_loglink_complete_evt(hdev, skb);
5139 break;
5140
5141 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
5142 hci_disconn_phylink_complete_evt(hdev, skb);
5143 break;
5144
5145 case HCI_EV_NUM_COMP_BLOCKS:
5146 hci_num_comp_blocks_evt(hdev, skb);
5147 break;
5148
5149 default:
5150 BT_DBG("%s event 0x%2.2x", hdev->name, event);
5151 break;
5152 }
5153
5154 kfree_skb(skb);
5155 hdev->stat.evt_rx++;
5156 }
Linux kernel - Deliverables
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