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Merge tag 'platform-drivers-x86-v3.18-1' of git://git.infradead.org/users/dvhart...
[mirror_ubuntu-bionic-kernel.git] / net / bluetooth / hci_event.c
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /* Bluetooth HCI event handling. */
26
27 #include <asm/unaligned.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31 #include <net/bluetooth/mgmt.h>
32
33 #include "a2mp.h"
34 #include "amp.h"
35 #include "smp.h"
36
37 /* Handle HCI Event packets */
38
39 static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
40 {
41 __u8 status = *((__u8 *) skb->data);
42
43 BT_DBG("%s status 0x%2.2x", hdev->name, status);
44
45 if (status)
46 return;
47
48 clear_bit(HCI_INQUIRY, &hdev->flags);
49 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
50 wake_up_bit(&hdev->flags, HCI_INQUIRY);
51
52 hci_dev_lock(hdev);
53 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
54 hci_dev_unlock(hdev);
55
56 hci_conn_check_pending(hdev);
57 }
58
59 static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
60 {
61 __u8 status = *((__u8 *) skb->data);
62
63 BT_DBG("%s status 0x%2.2x", hdev->name, status);
64
65 if (status)
66 return;
67
68 set_bit(HCI_PERIODIC_INQ, &hdev->dev_flags);
69 }
70
71 static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
72 {
73 __u8 status = *((__u8 *) skb->data);
74
75 BT_DBG("%s status 0x%2.2x", hdev->name, status);
76
77 if (status)
78 return;
79
80 clear_bit(HCI_PERIODIC_INQ, &hdev->dev_flags);
81
82 hci_conn_check_pending(hdev);
83 }
84
85 static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
86 struct sk_buff *skb)
87 {
88 BT_DBG("%s", hdev->name);
89 }
90
91 static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
92 {
93 struct hci_rp_role_discovery *rp = (void *) skb->data;
94 struct hci_conn *conn;
95
96 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
97
98 if (rp->status)
99 return;
100
101 hci_dev_lock(hdev);
102
103 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
104 if (conn)
105 conn->role = rp->role;
106
107 hci_dev_unlock(hdev);
108 }
109
110 static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
111 {
112 struct hci_rp_read_link_policy *rp = (void *) skb->data;
113 struct hci_conn *conn;
114
115 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
116
117 if (rp->status)
118 return;
119
120 hci_dev_lock(hdev);
121
122 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
123 if (conn)
124 conn->link_policy = __le16_to_cpu(rp->policy);
125
126 hci_dev_unlock(hdev);
127 }
128
129 static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
130 {
131 struct hci_rp_write_link_policy *rp = (void *) skb->data;
132 struct hci_conn *conn;
133 void *sent;
134
135 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
136
137 if (rp->status)
138 return;
139
140 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
141 if (!sent)
142 return;
143
144 hci_dev_lock(hdev);
145
146 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
147 if (conn)
148 conn->link_policy = get_unaligned_le16(sent + 2);
149
150 hci_dev_unlock(hdev);
151 }
152
153 static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
154 struct sk_buff *skb)
155 {
156 struct hci_rp_read_def_link_policy *rp = (void *) skb->data;
157
158 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
159
160 if (rp->status)
161 return;
162
163 hdev->link_policy = __le16_to_cpu(rp->policy);
164 }
165
166 static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
167 struct sk_buff *skb)
168 {
169 __u8 status = *((__u8 *) skb->data);
170 void *sent;
171
172 BT_DBG("%s status 0x%2.2x", hdev->name, status);
173
174 if (status)
175 return;
176
177 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
178 if (!sent)
179 return;
180
181 hdev->link_policy = get_unaligned_le16(sent);
182 }
183
184 static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
185 {
186 __u8 status = *((__u8 *) skb->data);
187
188 BT_DBG("%s status 0x%2.2x", hdev->name, status);
189
190 clear_bit(HCI_RESET, &hdev->flags);
191
192 /* Reset all non-persistent flags */
193 hdev->dev_flags &= ~HCI_PERSISTENT_MASK;
194
195 hdev->discovery.state = DISCOVERY_STOPPED;
196 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
197 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
198
199 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
200 hdev->adv_data_len = 0;
201
202 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
203 hdev->scan_rsp_data_len = 0;
204
205 hdev->le_scan_type = LE_SCAN_PASSIVE;
206
207 hdev->ssp_debug_mode = 0;
208 }
209
210 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
211 {
212 __u8 status = *((__u8 *) skb->data);
213 void *sent;
214
215 BT_DBG("%s status 0x%2.2x", hdev->name, status);
216
217 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
218 if (!sent)
219 return;
220
221 hci_dev_lock(hdev);
222
223 if (test_bit(HCI_MGMT, &hdev->dev_flags))
224 mgmt_set_local_name_complete(hdev, sent, status);
225 else if (!status)
226 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
227
228 hci_dev_unlock(hdev);
229 }
230
231 static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
232 {
233 struct hci_rp_read_local_name *rp = (void *) skb->data;
234
235 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
236
237 if (rp->status)
238 return;
239
240 if (test_bit(HCI_SETUP, &hdev->dev_flags))
241 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
242 }
243
244 static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
245 {
246 __u8 status = *((__u8 *) skb->data);
247 void *sent;
248
249 BT_DBG("%s status 0x%2.2x", hdev->name, status);
250
251 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
252 if (!sent)
253 return;
254
255 if (!status) {
256 __u8 param = *((__u8 *) sent);
257
258 if (param == AUTH_ENABLED)
259 set_bit(HCI_AUTH, &hdev->flags);
260 else
261 clear_bit(HCI_AUTH, &hdev->flags);
262 }
263
264 if (test_bit(HCI_MGMT, &hdev->dev_flags))
265 mgmt_auth_enable_complete(hdev, status);
266 }
267
268 static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
269 {
270 __u8 status = *((__u8 *) skb->data);
271 __u8 param;
272 void *sent;
273
274 BT_DBG("%s status 0x%2.2x", hdev->name, status);
275
276 if (status)
277 return;
278
279 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
280 if (!sent)
281 return;
282
283 param = *((__u8 *) sent);
284
285 if (param)
286 set_bit(HCI_ENCRYPT, &hdev->flags);
287 else
288 clear_bit(HCI_ENCRYPT, &hdev->flags);
289 }
290
291 static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
292 {
293 __u8 status = *((__u8 *) skb->data);
294 __u8 param;
295 void *sent;
296
297 BT_DBG("%s status 0x%2.2x", hdev->name, status);
298
299 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
300 if (!sent)
301 return;
302
303 param = *((__u8 *) sent);
304
305 hci_dev_lock(hdev);
306
307 if (status) {
308 hdev->discov_timeout = 0;
309 goto done;
310 }
311
312 if (param & SCAN_INQUIRY)
313 set_bit(HCI_ISCAN, &hdev->flags);
314 else
315 clear_bit(HCI_ISCAN, &hdev->flags);
316
317 if (param & SCAN_PAGE)
318 set_bit(HCI_PSCAN, &hdev->flags);
319 else
320 clear_bit(HCI_PSCAN, &hdev->flags);
321
322 done:
323 hci_dev_unlock(hdev);
324 }
325
326 static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
327 {
328 struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
329
330 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
331
332 if (rp->status)
333 return;
334
335 memcpy(hdev->dev_class, rp->dev_class, 3);
336
337 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
338 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
339 }
340
341 static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
342 {
343 __u8 status = *((__u8 *) skb->data);
344 void *sent;
345
346 BT_DBG("%s status 0x%2.2x", hdev->name, status);
347
348 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
349 if (!sent)
350 return;
351
352 hci_dev_lock(hdev);
353
354 if (status == 0)
355 memcpy(hdev->dev_class, sent, 3);
356
357 if (test_bit(HCI_MGMT, &hdev->dev_flags))
358 mgmt_set_class_of_dev_complete(hdev, sent, status);
359
360 hci_dev_unlock(hdev);
361 }
362
363 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
364 {
365 struct hci_rp_read_voice_setting *rp = (void *) skb->data;
366 __u16 setting;
367
368 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
369
370 if (rp->status)
371 return;
372
373 setting = __le16_to_cpu(rp->voice_setting);
374
375 if (hdev->voice_setting == setting)
376 return;
377
378 hdev->voice_setting = setting;
379
380 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
381
382 if (hdev->notify)
383 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
384 }
385
386 static void hci_cc_write_voice_setting(struct hci_dev *hdev,
387 struct sk_buff *skb)
388 {
389 __u8 status = *((__u8 *) skb->data);
390 __u16 setting;
391 void *sent;
392
393 BT_DBG("%s status 0x%2.2x", hdev->name, status);
394
395 if (status)
396 return;
397
398 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
399 if (!sent)
400 return;
401
402 setting = get_unaligned_le16(sent);
403
404 if (hdev->voice_setting == setting)
405 return;
406
407 hdev->voice_setting = setting;
408
409 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
410
411 if (hdev->notify)
412 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
413 }
414
415 static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
416 struct sk_buff *skb)
417 {
418 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;
419
420 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
421
422 if (rp->status)
423 return;
424
425 hdev->num_iac = rp->num_iac;
426
427 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
428 }
429
430 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
431 {
432 __u8 status = *((__u8 *) skb->data);
433 struct hci_cp_write_ssp_mode *sent;
434
435 BT_DBG("%s status 0x%2.2x", hdev->name, status);
436
437 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
438 if (!sent)
439 return;
440
441 if (!status) {
442 if (sent->mode)
443 hdev->features[1][0] |= LMP_HOST_SSP;
444 else
445 hdev->features[1][0] &= ~LMP_HOST_SSP;
446 }
447
448 if (test_bit(HCI_MGMT, &hdev->dev_flags))
449 mgmt_ssp_enable_complete(hdev, sent->mode, status);
450 else if (!status) {
451 if (sent->mode)
452 set_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
453 else
454 clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
455 }
456 }
457
458 static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
459 {
460 u8 status = *((u8 *) skb->data);
461 struct hci_cp_write_sc_support *sent;
462
463 BT_DBG("%s status 0x%2.2x", hdev->name, status);
464
465 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
466 if (!sent)
467 return;
468
469 if (!status) {
470 if (sent->support)
471 hdev->features[1][0] |= LMP_HOST_SC;
472 else
473 hdev->features[1][0] &= ~LMP_HOST_SC;
474 }
475
476 if (test_bit(HCI_MGMT, &hdev->dev_flags))
477 mgmt_sc_enable_complete(hdev, sent->support, status);
478 else if (!status) {
479 if (sent->support)
480 set_bit(HCI_SC_ENABLED, &hdev->dev_flags);
481 else
482 clear_bit(HCI_SC_ENABLED, &hdev->dev_flags);
483 }
484 }
485
486 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
487 {
488 struct hci_rp_read_local_version *rp = (void *) skb->data;
489
490 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
491
492 if (rp->status)
493 return;
494
495 if (test_bit(HCI_SETUP, &hdev->dev_flags)) {
496 hdev->hci_ver = rp->hci_ver;
497 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
498 hdev->lmp_ver = rp->lmp_ver;
499 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
500 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
501 }
502 }
503
504 static void hci_cc_read_local_commands(struct hci_dev *hdev,
505 struct sk_buff *skb)
506 {
507 struct hci_rp_read_local_commands *rp = (void *) skb->data;
508
509 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
510
511 if (rp->status)
512 return;
513
514 if (test_bit(HCI_SETUP, &hdev->dev_flags))
515 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
516 }
517
518 static void hci_cc_read_local_features(struct hci_dev *hdev,
519 struct sk_buff *skb)
520 {
521 struct hci_rp_read_local_features *rp = (void *) skb->data;
522
523 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
524
525 if (rp->status)
526 return;
527
528 memcpy(hdev->features, rp->features, 8);
529
530 /* Adjust default settings according to features
531 * supported by device. */
532
533 if (hdev->features[0][0] & LMP_3SLOT)
534 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
535
536 if (hdev->features[0][0] & LMP_5SLOT)
537 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
538
539 if (hdev->features[0][1] & LMP_HV2) {
540 hdev->pkt_type |= (HCI_HV2);
541 hdev->esco_type |= (ESCO_HV2);
542 }
543
544 if (hdev->features[0][1] & LMP_HV3) {
545 hdev->pkt_type |= (HCI_HV3);
546 hdev->esco_type |= (ESCO_HV3);
547 }
548
549 if (lmp_esco_capable(hdev))
550 hdev->esco_type |= (ESCO_EV3);
551
552 if (hdev->features[0][4] & LMP_EV4)
553 hdev->esco_type |= (ESCO_EV4);
554
555 if (hdev->features[0][4] & LMP_EV5)
556 hdev->esco_type |= (ESCO_EV5);
557
558 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
559 hdev->esco_type |= (ESCO_2EV3);
560
561 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
562 hdev->esco_type |= (ESCO_3EV3);
563
564 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
565 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
566 }
567
568 static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
569 struct sk_buff *skb)
570 {
571 struct hci_rp_read_local_ext_features *rp = (void *) skb->data;
572
573 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
574
575 if (rp->status)
576 return;
577
578 if (hdev->max_page < rp->max_page)
579 hdev->max_page = rp->max_page;
580
581 if (rp->page < HCI_MAX_PAGES)
582 memcpy(hdev->features[rp->page], rp->features, 8);
583 }
584
585 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
586 struct sk_buff *skb)
587 {
588 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;
589
590 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
591
592 if (rp->status)
593 return;
594
595 hdev->flow_ctl_mode = rp->mode;
596 }
597
598 static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
599 {
600 struct hci_rp_read_buffer_size *rp = (void *) skb->data;
601
602 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
603
604 if (rp->status)
605 return;
606
607 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
608 hdev->sco_mtu = rp->sco_mtu;
609 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
610 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
611
612 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
613 hdev->sco_mtu = 64;
614 hdev->sco_pkts = 8;
615 }
616
617 hdev->acl_cnt = hdev->acl_pkts;
618 hdev->sco_cnt = hdev->sco_pkts;
619
620 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
621 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
622 }
623
624 static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
625 {
626 struct hci_rp_read_bd_addr *rp = (void *) skb->data;
627
628 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
629
630 if (rp->status)
631 return;
632
633 if (test_bit(HCI_INIT, &hdev->flags))
634 bacpy(&hdev->bdaddr, &rp->bdaddr);
635
636 if (test_bit(HCI_SETUP, &hdev->dev_flags))
637 bacpy(&hdev->setup_addr, &rp->bdaddr);
638 }
639
640 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
641 struct sk_buff *skb)
642 {
643 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;
644
645 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
646
647 if (rp->status)
648 return;
649
650 if (test_bit(HCI_INIT, &hdev->flags)) {
651 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
652 hdev->page_scan_window = __le16_to_cpu(rp->window);
653 }
654 }
655
656 static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
657 struct sk_buff *skb)
658 {
659 u8 status = *((u8 *) skb->data);
660 struct hci_cp_write_page_scan_activity *sent;
661
662 BT_DBG("%s status 0x%2.2x", hdev->name, status);
663
664 if (status)
665 return;
666
667 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
668 if (!sent)
669 return;
670
671 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
672 hdev->page_scan_window = __le16_to_cpu(sent->window);
673 }
674
675 static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
676 struct sk_buff *skb)
677 {
678 struct hci_rp_read_page_scan_type *rp = (void *) skb->data;
679
680 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
681
682 if (rp->status)
683 return;
684
685 if (test_bit(HCI_INIT, &hdev->flags))
686 hdev->page_scan_type = rp->type;
687 }
688
689 static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
690 struct sk_buff *skb)
691 {
692 u8 status = *((u8 *) skb->data);
693 u8 *type;
694
695 BT_DBG("%s status 0x%2.2x", hdev->name, status);
696
697 if (status)
698 return;
699
700 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
701 if (type)
702 hdev->page_scan_type = *type;
703 }
704
705 static void hci_cc_read_data_block_size(struct hci_dev *hdev,
706 struct sk_buff *skb)
707 {
708 struct hci_rp_read_data_block_size *rp = (void *) skb->data;
709
710 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
711
712 if (rp->status)
713 return;
714
715 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
716 hdev->block_len = __le16_to_cpu(rp->block_len);
717 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
718
719 hdev->block_cnt = hdev->num_blocks;
720
721 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
722 hdev->block_cnt, hdev->block_len);
723 }
724
725 static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
726 {
727 struct hci_rp_read_clock *rp = (void *) skb->data;
728 struct hci_cp_read_clock *cp;
729 struct hci_conn *conn;
730
731 BT_DBG("%s", hdev->name);
732
733 if (skb->len < sizeof(*rp))
734 return;
735
736 if (rp->status)
737 return;
738
739 hci_dev_lock(hdev);
740
741 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
742 if (!cp)
743 goto unlock;
744
745 if (cp->which == 0x00) {
746 hdev->clock = le32_to_cpu(rp->clock);
747 goto unlock;
748 }
749
750 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
751 if (conn) {
752 conn->clock = le32_to_cpu(rp->clock);
753 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
754 }
755
756 unlock:
757 hci_dev_unlock(hdev);
758 }
759
760 static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
761 struct sk_buff *skb)
762 {
763 struct hci_rp_read_local_amp_info *rp = (void *) skb->data;
764
765 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
766
767 if (rp->status)
768 goto a2mp_rsp;
769
770 hdev->amp_status = rp->amp_status;
771 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
772 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
773 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
774 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
775 hdev->amp_type = rp->amp_type;
776 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
777 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
778 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
779 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
780
781 a2mp_rsp:
782 a2mp_send_getinfo_rsp(hdev);
783 }
784
785 static void hci_cc_read_local_amp_assoc(struct hci_dev *hdev,
786 struct sk_buff *skb)
787 {
788 struct hci_rp_read_local_amp_assoc *rp = (void *) skb->data;
789 struct amp_assoc *assoc = &hdev->loc_assoc;
790 size_t rem_len, frag_len;
791
792 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
793
794 if (rp->status)
795 goto a2mp_rsp;
796
797 frag_len = skb->len - sizeof(*rp);
798 rem_len = __le16_to_cpu(rp->rem_len);
799
800 if (rem_len > frag_len) {
801 BT_DBG("frag_len %zu rem_len %zu", frag_len, rem_len);
802
803 memcpy(assoc->data + assoc->offset, rp->frag, frag_len);
804 assoc->offset += frag_len;
805
806 /* Read other fragments */
807 amp_read_loc_assoc_frag(hdev, rp->phy_handle);
808
809 return;
810 }
811
812 memcpy(assoc->data + assoc->offset, rp->frag, rem_len);
813 assoc->len = assoc->offset + rem_len;
814 assoc->offset = 0;
815
816 a2mp_rsp:
817 /* Send A2MP Rsp when all fragments are received */
818 a2mp_send_getampassoc_rsp(hdev, rp->status);
819 a2mp_send_create_phy_link_req(hdev, rp->status);
820 }
821
822 static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
823 struct sk_buff *skb)
824 {
825 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
826
827 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
828
829 if (rp->status)
830 return;
831
832 hdev->inq_tx_power = rp->tx_power;
833 }
834
835 static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
836 {
837 struct hci_rp_pin_code_reply *rp = (void *) skb->data;
838 struct hci_cp_pin_code_reply *cp;
839 struct hci_conn *conn;
840
841 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
842
843 hci_dev_lock(hdev);
844
845 if (test_bit(HCI_MGMT, &hdev->dev_flags))
846 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
847
848 if (rp->status)
849 goto unlock;
850
851 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
852 if (!cp)
853 goto unlock;
854
855 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
856 if (conn)
857 conn->pin_length = cp->pin_len;
858
859 unlock:
860 hci_dev_unlock(hdev);
861 }
862
863 static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
864 {
865 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;
866
867 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
868
869 hci_dev_lock(hdev);
870
871 if (test_bit(HCI_MGMT, &hdev->dev_flags))
872 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
873 rp->status);
874
875 hci_dev_unlock(hdev);
876 }
877
878 static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
879 struct sk_buff *skb)
880 {
881 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
882
883 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
884
885 if (rp->status)
886 return;
887
888 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
889 hdev->le_pkts = rp->le_max_pkt;
890
891 hdev->le_cnt = hdev->le_pkts;
892
893 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
894 }
895
896 static void hci_cc_le_read_local_features(struct hci_dev *hdev,
897 struct sk_buff *skb)
898 {
899 struct hci_rp_le_read_local_features *rp = (void *) skb->data;
900
901 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
902
903 if (rp->status)
904 return;
905
906 memcpy(hdev->le_features, rp->features, 8);
907 }
908
909 static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
910 struct sk_buff *skb)
911 {
912 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
913
914 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
915
916 if (rp->status)
917 return;
918
919 hdev->adv_tx_power = rp->tx_power;
920 }
921
922 static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
923 {
924 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
925
926 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
927
928 hci_dev_lock(hdev);
929
930 if (test_bit(HCI_MGMT, &hdev->dev_flags))
931 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
932 rp->status);
933
934 hci_dev_unlock(hdev);
935 }
936
937 static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
938 struct sk_buff *skb)
939 {
940 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
941
942 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
943
944 hci_dev_lock(hdev);
945
946 if (test_bit(HCI_MGMT, &hdev->dev_flags))
947 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
948 ACL_LINK, 0, rp->status);
949
950 hci_dev_unlock(hdev);
951 }
952
953 static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
954 {
955 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
956
957 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
958
959 hci_dev_lock(hdev);
960
961 if (test_bit(HCI_MGMT, &hdev->dev_flags))
962 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
963 0, rp->status);
964
965 hci_dev_unlock(hdev);
966 }
967
968 static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
969 struct sk_buff *skb)
970 {
971 struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
972
973 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
974
975 hci_dev_lock(hdev);
976
977 if (test_bit(HCI_MGMT, &hdev->dev_flags))
978 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
979 ACL_LINK, 0, rp->status);
980
981 hci_dev_unlock(hdev);
982 }
983
984 static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
985 struct sk_buff *skb)
986 {
987 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
988
989 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
990
991 hci_dev_lock(hdev);
992 mgmt_read_local_oob_data_complete(hdev, rp->hash, rp->randomizer,
993 NULL, NULL, rp->status);
994 hci_dev_unlock(hdev);
995 }
996
997 static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
998 struct sk_buff *skb)
999 {
1000 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
1001
1002 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1003
1004 hci_dev_lock(hdev);
1005 mgmt_read_local_oob_data_complete(hdev, rp->hash192, rp->randomizer192,
1006 rp->hash256, rp->randomizer256,
1007 rp->status);
1008 hci_dev_unlock(hdev);
1009 }
1010
1011
1012 static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
1013 {
1014 __u8 status = *((__u8 *) skb->data);
1015 bdaddr_t *sent;
1016
1017 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1018
1019 if (status)
1020 return;
1021
1022 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1023 if (!sent)
1024 return;
1025
1026 hci_dev_lock(hdev);
1027
1028 bacpy(&hdev->random_addr, sent);
1029
1030 hci_dev_unlock(hdev);
1031 }
1032
1033 static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
1034 {
1035 __u8 *sent, status = *((__u8 *) skb->data);
1036
1037 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1038
1039 if (status)
1040 return;
1041
1042 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1043 if (!sent)
1044 return;
1045
1046 hci_dev_lock(hdev);
1047
1048 /* If we're doing connection initation as peripheral. Set a
1049 * timeout in case something goes wrong.
1050 */
1051 if (*sent) {
1052 struct hci_conn *conn;
1053
1054 set_bit(HCI_LE_ADV, &hdev->dev_flags);
1055
1056 conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
1057 if (conn)
1058 queue_delayed_work(hdev->workqueue,
1059 &conn->le_conn_timeout,
1060 conn->conn_timeout);
1061 } else {
1062 clear_bit(HCI_LE_ADV, &hdev->dev_flags);
1063 }
1064
1065 hci_dev_unlock(hdev);
1066 }
1067
1068 static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
1069 {
1070 struct hci_cp_le_set_scan_param *cp;
1071 __u8 status = *((__u8 *) skb->data);
1072
1073 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1074
1075 if (status)
1076 return;
1077
1078 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1079 if (!cp)
1080 return;
1081
1082 hci_dev_lock(hdev);
1083
1084 hdev->le_scan_type = cp->type;
1085
1086 hci_dev_unlock(hdev);
1087 }
1088
1089 static bool has_pending_adv_report(struct hci_dev *hdev)
1090 {
1091 struct discovery_state *d = &hdev->discovery;
1092
1093 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1094 }
1095
1096 static void clear_pending_adv_report(struct hci_dev *hdev)
1097 {
1098 struct discovery_state *d = &hdev->discovery;
1099
1100 bacpy(&d->last_adv_addr, BDADDR_ANY);
1101 d->last_adv_data_len = 0;
1102 }
1103
1104 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1105 u8 bdaddr_type, s8 rssi, u32 flags,
1106 u8 *data, u8 len)
1107 {
1108 struct discovery_state *d = &hdev->discovery;
1109
1110 bacpy(&d->last_adv_addr, bdaddr);
1111 d->last_adv_addr_type = bdaddr_type;
1112 d->last_adv_rssi = rssi;
1113 d->last_adv_flags = flags;
1114 memcpy(d->last_adv_data, data, len);
1115 d->last_adv_data_len = len;
1116 }
1117
1118 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1119 struct sk_buff *skb)
1120 {
1121 struct hci_cp_le_set_scan_enable *cp;
1122 __u8 status = *((__u8 *) skb->data);
1123
1124 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1125
1126 if (status)
1127 return;
1128
1129 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1130 if (!cp)
1131 return;
1132
1133 switch (cp->enable) {
1134 case LE_SCAN_ENABLE:
1135 set_bit(HCI_LE_SCAN, &hdev->dev_flags);
1136 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1137 clear_pending_adv_report(hdev);
1138 break;
1139
1140 case LE_SCAN_DISABLE:
1141 /* We do this here instead of when setting DISCOVERY_STOPPED
1142 * since the latter would potentially require waiting for
1143 * inquiry to stop too.
1144 */
1145 if (has_pending_adv_report(hdev)) {
1146 struct discovery_state *d = &hdev->discovery;
1147
1148 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1149 d->last_adv_addr_type, NULL,
1150 d->last_adv_rssi, d->last_adv_flags,
1151 d->last_adv_data,
1152 d->last_adv_data_len, NULL, 0);
1153 }
1154
1155 /* Cancel this timer so that we don't try to disable scanning
1156 * when it's already disabled.
1157 */
1158 cancel_delayed_work(&hdev->le_scan_disable);
1159
1160 clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
1161
1162 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1163 * interrupted scanning due to a connect request. Mark
1164 * therefore discovery as stopped. If this was not
1165 * because of a connect request advertising might have
1166 * been disabled because of active scanning, so
1167 * re-enable it again if necessary.
1168 */
1169 if (test_and_clear_bit(HCI_LE_SCAN_INTERRUPTED,
1170 &hdev->dev_flags))
1171 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1172 else if (!test_bit(HCI_LE_ADV, &hdev->dev_flags) &&
1173 hdev->discovery.state == DISCOVERY_FINDING)
1174 mgmt_reenable_advertising(hdev);
1175
1176 break;
1177
1178 default:
1179 BT_ERR("Used reserved LE_Scan_Enable param %d", cp->enable);
1180 break;
1181 }
1182 }
1183
1184 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
1185 struct sk_buff *skb)
1186 {
1187 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;
1188
1189 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);
1190
1191 if (rp->status)
1192 return;
1193
1194 hdev->le_white_list_size = rp->size;
1195 }
1196
1197 static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
1198 struct sk_buff *skb)
1199 {
1200 __u8 status = *((__u8 *) skb->data);
1201
1202 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1203
1204 if (status)
1205 return;
1206
1207 hci_bdaddr_list_clear(&hdev->le_white_list);
1208 }
1209
1210 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
1211 struct sk_buff *skb)
1212 {
1213 struct hci_cp_le_add_to_white_list *sent;
1214 __u8 status = *((__u8 *) skb->data);
1215
1216 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1217
1218 if (status)
1219 return;
1220
1221 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
1222 if (!sent)
1223 return;
1224
1225 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
1226 sent->bdaddr_type);
1227 }
1228
1229 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
1230 struct sk_buff *skb)
1231 {
1232 struct hci_cp_le_del_from_white_list *sent;
1233 __u8 status = *((__u8 *) skb->data);
1234
1235 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1236
1237 if (status)
1238 return;
1239
1240 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
1241 if (!sent)
1242 return;
1243
1244 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
1245 sent->bdaddr_type);
1246 }
1247
1248 static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
1249 struct sk_buff *skb)
1250 {
1251 struct hci_rp_le_read_supported_states *rp = (void *) skb->data;
1252
1253 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1254
1255 if (rp->status)
1256 return;
1257
1258 memcpy(hdev->le_states, rp->le_states, 8);
1259 }
1260
1261 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
1262 struct sk_buff *skb)
1263 {
1264 struct hci_cp_write_le_host_supported *sent;
1265 __u8 status = *((__u8 *) skb->data);
1266
1267 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1268
1269 if (status)
1270 return;
1271
1272 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1273 if (!sent)
1274 return;
1275
1276 if (sent->le) {
1277 hdev->features[1][0] |= LMP_HOST_LE;
1278 set_bit(HCI_LE_ENABLED, &hdev->dev_flags);
1279 } else {
1280 hdev->features[1][0] &= ~LMP_HOST_LE;
1281 clear_bit(HCI_LE_ENABLED, &hdev->dev_flags);
1282 clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
1283 }
1284
1285 if (sent->simul)
1286 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
1287 else
1288 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1289 }
1290
1291 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
1292 {
1293 struct hci_cp_le_set_adv_param *cp;
1294 u8 status = *((u8 *) skb->data);
1295
1296 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1297
1298 if (status)
1299 return;
1300
1301 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
1302 if (!cp)
1303 return;
1304
1305 hci_dev_lock(hdev);
1306 hdev->adv_addr_type = cp->own_address_type;
1307 hci_dev_unlock(hdev);
1308 }
1309
1310 static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev,
1311 struct sk_buff *skb)
1312 {
1313 struct hci_rp_write_remote_amp_assoc *rp = (void *) skb->data;
1314
1315 BT_DBG("%s status 0x%2.2x phy_handle 0x%2.2x",
1316 hdev->name, rp->status, rp->phy_handle);
1317
1318 if (rp->status)
1319 return;
1320
1321 amp_write_rem_assoc_continue(hdev, rp->phy_handle);
1322 }
1323
1324 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
1325 {
1326 struct hci_rp_read_rssi *rp = (void *) skb->data;
1327 struct hci_conn *conn;
1328
1329 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1330
1331 if (rp->status)
1332 return;
1333
1334 hci_dev_lock(hdev);
1335
1336 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1337 if (conn)
1338 conn->rssi = rp->rssi;
1339
1340 hci_dev_unlock(hdev);
1341 }
1342
1343 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
1344 {
1345 struct hci_cp_read_tx_power *sent;
1346 struct hci_rp_read_tx_power *rp = (void *) skb->data;
1347 struct hci_conn *conn;
1348
1349 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1350
1351 if (rp->status)
1352 return;
1353
1354 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
1355 if (!sent)
1356 return;
1357
1358 hci_dev_lock(hdev);
1359
1360 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1361 if (!conn)
1362 goto unlock;
1363
1364 switch (sent->type) {
1365 case 0x00:
1366 conn->tx_power = rp->tx_power;
1367 break;
1368 case 0x01:
1369 conn->max_tx_power = rp->tx_power;
1370 break;
1371 }
1372
1373 unlock:
1374 hci_dev_unlock(hdev);
1375 }
1376
1377 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1378 {
1379 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1380
1381 if (status) {
1382 hci_conn_check_pending(hdev);
1383 return;
1384 }
1385
1386 set_bit(HCI_INQUIRY, &hdev->flags);
1387 }
1388
1389 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
1390 {
1391 struct hci_cp_create_conn *cp;
1392 struct hci_conn *conn;
1393
1394 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1395
1396 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
1397 if (!cp)
1398 return;
1399
1400 hci_dev_lock(hdev);
1401
1402 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1403
1404 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
1405
1406 if (status) {
1407 if (conn && conn->state == BT_CONNECT) {
1408 if (status != 0x0c || conn->attempt > 2) {
1409 conn->state = BT_CLOSED;
1410 hci_proto_connect_cfm(conn, status);
1411 hci_conn_del(conn);
1412 } else
1413 conn->state = BT_CONNECT2;
1414 }
1415 } else {
1416 if (!conn) {
1417 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
1418 HCI_ROLE_MASTER);
1419 if (!conn)
1420 BT_ERR("No memory for new connection");
1421 }
1422 }
1423
1424 hci_dev_unlock(hdev);
1425 }
1426
1427 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
1428 {
1429 struct hci_cp_add_sco *cp;
1430 struct hci_conn *acl, *sco;
1431 __u16 handle;
1432
1433 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1434
1435 if (!status)
1436 return;
1437
1438 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
1439 if (!cp)
1440 return;
1441
1442 handle = __le16_to_cpu(cp->handle);
1443
1444 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1445
1446 hci_dev_lock(hdev);
1447
1448 acl = hci_conn_hash_lookup_handle(hdev, handle);
1449 if (acl) {
1450 sco = acl->link;
1451 if (sco) {
1452 sco->state = BT_CLOSED;
1453
1454 hci_proto_connect_cfm(sco, status);
1455 hci_conn_del(sco);
1456 }
1457 }
1458
1459 hci_dev_unlock(hdev);
1460 }
1461
1462 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
1463 {
1464 struct hci_cp_auth_requested *cp;
1465 struct hci_conn *conn;
1466
1467 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1468
1469 if (!status)
1470 return;
1471
1472 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
1473 if (!cp)
1474 return;
1475
1476 hci_dev_lock(hdev);
1477
1478 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1479 if (conn) {
1480 if (conn->state == BT_CONFIG) {
1481 hci_proto_connect_cfm(conn, status);
1482 hci_conn_drop(conn);
1483 }
1484 }
1485
1486 hci_dev_unlock(hdev);
1487 }
1488
1489 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
1490 {
1491 struct hci_cp_set_conn_encrypt *cp;
1492 struct hci_conn *conn;
1493
1494 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1495
1496 if (!status)
1497 return;
1498
1499 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
1500 if (!cp)
1501 return;
1502
1503 hci_dev_lock(hdev);
1504
1505 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1506 if (conn) {
1507 if (conn->state == BT_CONFIG) {
1508 hci_proto_connect_cfm(conn, status);
1509 hci_conn_drop(conn);
1510 }
1511 }
1512
1513 hci_dev_unlock(hdev);
1514 }
1515
1516 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1517 struct hci_conn *conn)
1518 {
1519 if (conn->state != BT_CONFIG || !conn->out)
1520 return 0;
1521
1522 if (conn->pending_sec_level == BT_SECURITY_SDP)
1523 return 0;
1524
1525 /* Only request authentication for SSP connections or non-SSP
1526 * devices with sec_level MEDIUM or HIGH or if MITM protection
1527 * is requested.
1528 */
1529 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1530 conn->pending_sec_level != BT_SECURITY_FIPS &&
1531 conn->pending_sec_level != BT_SECURITY_HIGH &&
1532 conn->pending_sec_level != BT_SECURITY_MEDIUM)
1533 return 0;
1534
1535 return 1;
1536 }
1537
1538 static int hci_resolve_name(struct hci_dev *hdev,
1539 struct inquiry_entry *e)
1540 {
1541 struct hci_cp_remote_name_req cp;
1542
1543 memset(&cp, 0, sizeof(cp));
1544
1545 bacpy(&cp.bdaddr, &e->data.bdaddr);
1546 cp.pscan_rep_mode = e->data.pscan_rep_mode;
1547 cp.pscan_mode = e->data.pscan_mode;
1548 cp.clock_offset = e->data.clock_offset;
1549
1550 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
1551 }
1552
1553 static bool hci_resolve_next_name(struct hci_dev *hdev)
1554 {
1555 struct discovery_state *discov = &hdev->discovery;
1556 struct inquiry_entry *e;
1557
1558 if (list_empty(&discov->resolve))
1559 return false;
1560
1561 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1562 if (!e)
1563 return false;
1564
1565 if (hci_resolve_name(hdev, e) == 0) {
1566 e->name_state = NAME_PENDING;
1567 return true;
1568 }
1569
1570 return false;
1571 }
1572
1573 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1574 bdaddr_t *bdaddr, u8 *name, u8 name_len)
1575 {
1576 struct discovery_state *discov = &hdev->discovery;
1577 struct inquiry_entry *e;
1578
1579 if (conn && !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1580 mgmt_device_connected(hdev, bdaddr, ACL_LINK, 0x00, 0, name,
1581 name_len, conn->dev_class);
1582
1583 if (discov->state == DISCOVERY_STOPPED)
1584 return;
1585
1586 if (discov->state == DISCOVERY_STOPPING)
1587 goto discov_complete;
1588
1589 if (discov->state != DISCOVERY_RESOLVING)
1590 return;
1591
1592 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1593 /* If the device was not found in a list of found devices names of which
1594 * are pending. there is no need to continue resolving a next name as it
1595 * will be done upon receiving another Remote Name Request Complete
1596 * Event */
1597 if (!e)
1598 return;
1599
1600 list_del(&e->list);
1601 if (name) {
1602 e->name_state = NAME_KNOWN;
1603 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
1604 e->data.rssi, name, name_len);
1605 } else {
1606 e->name_state = NAME_NOT_KNOWN;
1607 }
1608
1609 if (hci_resolve_next_name(hdev))
1610 return;
1611
1612 discov_complete:
1613 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1614 }
1615
1616 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
1617 {
1618 struct hci_cp_remote_name_req *cp;
1619 struct hci_conn *conn;
1620
1621 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1622
1623 /* If successful wait for the name req complete event before
1624 * checking for the need to do authentication */
1625 if (!status)
1626 return;
1627
1628 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
1629 if (!cp)
1630 return;
1631
1632 hci_dev_lock(hdev);
1633
1634 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1635
1636 if (test_bit(HCI_MGMT, &hdev->dev_flags))
1637 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1638
1639 if (!conn)
1640 goto unlock;
1641
1642 if (!hci_outgoing_auth_needed(hdev, conn))
1643 goto unlock;
1644
1645 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1646 struct hci_cp_auth_requested auth_cp;
1647
1648 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
1649
1650 auth_cp.handle = __cpu_to_le16(conn->handle);
1651 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
1652 sizeof(auth_cp), &auth_cp);
1653 }
1654
1655 unlock:
1656 hci_dev_unlock(hdev);
1657 }
1658
1659 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
1660 {
1661 struct hci_cp_read_remote_features *cp;
1662 struct hci_conn *conn;
1663
1664 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1665
1666 if (!status)
1667 return;
1668
1669 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
1670 if (!cp)
1671 return;
1672
1673 hci_dev_lock(hdev);
1674
1675 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1676 if (conn) {
1677 if (conn->state == BT_CONFIG) {
1678 hci_proto_connect_cfm(conn, status);
1679 hci_conn_drop(conn);
1680 }
1681 }
1682
1683 hci_dev_unlock(hdev);
1684 }
1685
1686 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
1687 {
1688 struct hci_cp_read_remote_ext_features *cp;
1689 struct hci_conn *conn;
1690
1691 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1692
1693 if (!status)
1694 return;
1695
1696 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
1697 if (!cp)
1698 return;
1699
1700 hci_dev_lock(hdev);
1701
1702 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1703 if (conn) {
1704 if (conn->state == BT_CONFIG) {
1705 hci_proto_connect_cfm(conn, status);
1706 hci_conn_drop(conn);
1707 }
1708 }
1709
1710 hci_dev_unlock(hdev);
1711 }
1712
1713 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
1714 {
1715 struct hci_cp_setup_sync_conn *cp;
1716 struct hci_conn *acl, *sco;
1717 __u16 handle;
1718
1719 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1720
1721 if (!status)
1722 return;
1723
1724 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
1725 if (!cp)
1726 return;
1727
1728 handle = __le16_to_cpu(cp->handle);
1729
1730 BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1731
1732 hci_dev_lock(hdev);
1733
1734 acl = hci_conn_hash_lookup_handle(hdev, handle);
1735 if (acl) {
1736 sco = acl->link;
1737 if (sco) {
1738 sco->state = BT_CLOSED;
1739
1740 hci_proto_connect_cfm(sco, status);
1741 hci_conn_del(sco);
1742 }
1743 }
1744
1745 hci_dev_unlock(hdev);
1746 }
1747
1748 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
1749 {
1750 struct hci_cp_sniff_mode *cp;
1751 struct hci_conn *conn;
1752
1753 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1754
1755 if (!status)
1756 return;
1757
1758 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
1759 if (!cp)
1760 return;
1761
1762 hci_dev_lock(hdev);
1763
1764 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1765 if (conn) {
1766 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1767
1768 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1769 hci_sco_setup(conn, status);
1770 }
1771
1772 hci_dev_unlock(hdev);
1773 }
1774
1775 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
1776 {
1777 struct hci_cp_exit_sniff_mode *cp;
1778 struct hci_conn *conn;
1779
1780 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1781
1782 if (!status)
1783 return;
1784
1785 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
1786 if (!cp)
1787 return;
1788
1789 hci_dev_lock(hdev);
1790
1791 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1792 if (conn) {
1793 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1794
1795 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1796 hci_sco_setup(conn, status);
1797 }
1798
1799 hci_dev_unlock(hdev);
1800 }
1801
1802 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
1803 {
1804 struct hci_cp_disconnect *cp;
1805 struct hci_conn *conn;
1806
1807 if (!status)
1808 return;
1809
1810 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
1811 if (!cp)
1812 return;
1813
1814 hci_dev_lock(hdev);
1815
1816 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1817 if (conn)
1818 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1819 conn->dst_type, status);
1820
1821 hci_dev_unlock(hdev);
1822 }
1823
1824 static void hci_cs_create_phylink(struct hci_dev *hdev, u8 status)
1825 {
1826 struct hci_cp_create_phy_link *cp;
1827
1828 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1829
1830 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_PHY_LINK);
1831 if (!cp)
1832 return;
1833
1834 hci_dev_lock(hdev);
1835
1836 if (status) {
1837 struct hci_conn *hcon;
1838
1839 hcon = hci_conn_hash_lookup_handle(hdev, cp->phy_handle);
1840 if (hcon)
1841 hci_conn_del(hcon);
1842 } else {
1843 amp_write_remote_assoc(hdev, cp->phy_handle);
1844 }
1845
1846 hci_dev_unlock(hdev);
1847 }
1848
1849 static void hci_cs_accept_phylink(struct hci_dev *hdev, u8 status)
1850 {
1851 struct hci_cp_accept_phy_link *cp;
1852
1853 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1854
1855 if (status)
1856 return;
1857
1858 cp = hci_sent_cmd_data(hdev, HCI_OP_ACCEPT_PHY_LINK);
1859 if (!cp)
1860 return;
1861
1862 amp_write_remote_assoc(hdev, cp->phy_handle);
1863 }
1864
1865 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
1866 {
1867 struct hci_cp_le_create_conn *cp;
1868 struct hci_conn *conn;
1869
1870 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1871
1872 /* All connection failure handling is taken care of by the
1873 * hci_le_conn_failed function which is triggered by the HCI
1874 * request completion callbacks used for connecting.
1875 */
1876 if (status)
1877 return;
1878
1879 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
1880 if (!cp)
1881 return;
1882
1883 hci_dev_lock(hdev);
1884
1885 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->peer_addr);
1886 if (!conn)
1887 goto unlock;
1888
1889 /* Store the initiator and responder address information which
1890 * is needed for SMP. These values will not change during the
1891 * lifetime of the connection.
1892 */
1893 conn->init_addr_type = cp->own_address_type;
1894 if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
1895 bacpy(&conn->init_addr, &hdev->random_addr);
1896 else
1897 bacpy(&conn->init_addr, &hdev->bdaddr);
1898
1899 conn->resp_addr_type = cp->peer_addr_type;
1900 bacpy(&conn->resp_addr, &cp->peer_addr);
1901
1902 /* We don't want the connection attempt to stick around
1903 * indefinitely since LE doesn't have a page timeout concept
1904 * like BR/EDR. Set a timer for any connection that doesn't use
1905 * the white list for connecting.
1906 */
1907 if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
1908 queue_delayed_work(conn->hdev->workqueue,
1909 &conn->le_conn_timeout,
1910 conn->conn_timeout);
1911
1912 unlock:
1913 hci_dev_unlock(hdev);
1914 }
1915
1916 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
1917 {
1918 struct hci_cp_le_start_enc *cp;
1919 struct hci_conn *conn;
1920
1921 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1922
1923 if (!status)
1924 return;
1925
1926 hci_dev_lock(hdev);
1927
1928 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
1929 if (!cp)
1930 goto unlock;
1931
1932 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1933 if (!conn)
1934 goto unlock;
1935
1936 if (conn->state != BT_CONNECTED)
1937 goto unlock;
1938
1939 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
1940 hci_conn_drop(conn);
1941
1942 unlock:
1943 hci_dev_unlock(hdev);
1944 }
1945
1946 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
1947 {
1948 __u8 status = *((__u8 *) skb->data);
1949 struct discovery_state *discov = &hdev->discovery;
1950 struct inquiry_entry *e;
1951
1952 BT_DBG("%s status 0x%2.2x", hdev->name, status);
1953
1954 hci_conn_check_pending(hdev);
1955
1956 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
1957 return;
1958
1959 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
1960 wake_up_bit(&hdev->flags, HCI_INQUIRY);
1961
1962 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
1963 return;
1964
1965 hci_dev_lock(hdev);
1966
1967 if (discov->state != DISCOVERY_FINDING)
1968 goto unlock;
1969
1970 if (list_empty(&discov->resolve)) {
1971 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1972 goto unlock;
1973 }
1974
1975 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1976 if (e && hci_resolve_name(hdev, e) == 0) {
1977 e->name_state = NAME_PENDING;
1978 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
1979 } else {
1980 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1981 }
1982
1983 unlock:
1984 hci_dev_unlock(hdev);
1985 }
1986
1987 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
1988 {
1989 struct inquiry_data data;
1990 struct inquiry_info *info = (void *) (skb->data + 1);
1991 int num_rsp = *((__u8 *) skb->data);
1992
1993 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
1994
1995 if (!num_rsp)
1996 return;
1997
1998 if (test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags))
1999 return;
2000
2001 hci_dev_lock(hdev);
2002
2003 for (; num_rsp; num_rsp--, info++) {
2004 u32 flags;
2005
2006 bacpy(&data.bdaddr, &info->bdaddr);
2007 data.pscan_rep_mode = info->pscan_rep_mode;
2008 data.pscan_period_mode = info->pscan_period_mode;
2009 data.pscan_mode = info->pscan_mode;
2010 memcpy(data.dev_class, info->dev_class, 3);
2011 data.clock_offset = info->clock_offset;
2012 data.rssi = 0x00;
2013 data.ssp_mode = 0x00;
2014
2015 flags = hci_inquiry_cache_update(hdev, &data, false);
2016
2017 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2018 info->dev_class, 0, flags, NULL, 0, NULL, 0);
2019 }
2020
2021 hci_dev_unlock(hdev);
2022 }
2023
2024 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2025 {
2026 struct hci_ev_conn_complete *ev = (void *) skb->data;
2027 struct hci_conn *conn;
2028
2029 BT_DBG("%s", hdev->name);
2030
2031 hci_dev_lock(hdev);
2032
2033 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2034 if (!conn) {
2035 if (ev->link_type != SCO_LINK)
2036 goto unlock;
2037
2038 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
2039 if (!conn)
2040 goto unlock;
2041
2042 conn->type = SCO_LINK;
2043 }
2044
2045 if (!ev->status) {
2046 conn->handle = __le16_to_cpu(ev->handle);
2047
2048 if (conn->type == ACL_LINK) {
2049 conn->state = BT_CONFIG;
2050 hci_conn_hold(conn);
2051
2052 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
2053 !hci_find_link_key(hdev, &ev->bdaddr))
2054 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
2055 else
2056 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2057 } else
2058 conn->state = BT_CONNECTED;
2059
2060 hci_conn_add_sysfs(conn);
2061
2062 if (test_bit(HCI_AUTH, &hdev->flags))
2063 set_bit(HCI_CONN_AUTH, &conn->flags);
2064
2065 if (test_bit(HCI_ENCRYPT, &hdev->flags))
2066 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2067
2068 /* Get remote features */
2069 if (conn->type == ACL_LINK) {
2070 struct hci_cp_read_remote_features cp;
2071 cp.handle = ev->handle;
2072 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2073 sizeof(cp), &cp);
2074
2075 hci_update_page_scan(hdev, NULL);
2076 }
2077
2078 /* Set packet type for incoming connection */
2079 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
2080 struct hci_cp_change_conn_ptype cp;
2081 cp.handle = ev->handle;
2082 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2083 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
2084 &cp);
2085 }
2086 } else {
2087 conn->state = BT_CLOSED;
2088 if (conn->type == ACL_LINK)
2089 mgmt_connect_failed(hdev, &conn->dst, conn->type,
2090 conn->dst_type, ev->status);
2091 }
2092
2093 if (conn->type == ACL_LINK)
2094 hci_sco_setup(conn, ev->status);
2095
2096 if (ev->status) {
2097 hci_proto_connect_cfm(conn, ev->status);
2098 hci_conn_del(conn);
2099 } else if (ev->link_type != ACL_LINK)
2100 hci_proto_connect_cfm(conn, ev->status);
2101
2102 unlock:
2103 hci_dev_unlock(hdev);
2104
2105 hci_conn_check_pending(hdev);
2106 }
2107
2108 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
2109 {
2110 struct hci_cp_reject_conn_req cp;
2111
2112 bacpy(&cp.bdaddr, bdaddr);
2113 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
2114 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
2115 }
2116
2117 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
2118 {
2119 struct hci_ev_conn_request *ev = (void *) skb->data;
2120 int mask = hdev->link_mode;
2121 struct inquiry_entry *ie;
2122 struct hci_conn *conn;
2123 __u8 flags = 0;
2124
2125 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2126 ev->link_type);
2127
2128 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
2129 &flags);
2130
2131 if (!(mask & HCI_LM_ACCEPT)) {
2132 hci_reject_conn(hdev, &ev->bdaddr);
2133 return;
2134 }
2135
2136 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
2137 BDADDR_BREDR)) {
2138 hci_reject_conn(hdev, &ev->bdaddr);
2139 return;
2140 }
2141
2142 if (!test_bit(HCI_CONNECTABLE, &hdev->dev_flags) &&
2143 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
2144 BDADDR_BREDR)) {
2145 hci_reject_conn(hdev, &ev->bdaddr);
2146 return;
2147 }
2148
2149 /* Connection accepted */
2150
2151 hci_dev_lock(hdev);
2152
2153 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
2154 if (ie)
2155 memcpy(ie->data.dev_class, ev->dev_class, 3);
2156
2157 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
2158 &ev->bdaddr);
2159 if (!conn) {
2160 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
2161 HCI_ROLE_SLAVE);
2162 if (!conn) {
2163 BT_ERR("No memory for new connection");
2164 hci_dev_unlock(hdev);
2165 return;
2166 }
2167 }
2168
2169 memcpy(conn->dev_class, ev->dev_class, 3);
2170
2171 hci_dev_unlock(hdev);
2172
2173 if (ev->link_type == ACL_LINK ||
2174 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
2175 struct hci_cp_accept_conn_req cp;
2176 conn->state = BT_CONNECT;
2177
2178 bacpy(&cp.bdaddr, &ev->bdaddr);
2179
2180 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
2181 cp.role = 0x00; /* Become master */
2182 else
2183 cp.role = 0x01; /* Remain slave */
2184
2185 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
2186 } else if (!(flags & HCI_PROTO_DEFER)) {
2187 struct hci_cp_accept_sync_conn_req cp;
2188 conn->state = BT_CONNECT;
2189
2190 bacpy(&cp.bdaddr, &ev->bdaddr);
2191 cp.pkt_type = cpu_to_le16(conn->pkt_type);
2192
2193 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
2194 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
2195 cp.max_latency = cpu_to_le16(0xffff);
2196 cp.content_format = cpu_to_le16(hdev->voice_setting);
2197 cp.retrans_effort = 0xff;
2198
2199 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
2200 &cp);
2201 } else {
2202 conn->state = BT_CONNECT2;
2203 hci_proto_connect_cfm(conn, 0);
2204 }
2205 }
2206
2207 static u8 hci_to_mgmt_reason(u8 err)
2208 {
2209 switch (err) {
2210 case HCI_ERROR_CONNECTION_TIMEOUT:
2211 return MGMT_DEV_DISCONN_TIMEOUT;
2212 case HCI_ERROR_REMOTE_USER_TERM:
2213 case HCI_ERROR_REMOTE_LOW_RESOURCES:
2214 case HCI_ERROR_REMOTE_POWER_OFF:
2215 return MGMT_DEV_DISCONN_REMOTE;
2216 case HCI_ERROR_LOCAL_HOST_TERM:
2217 return MGMT_DEV_DISCONN_LOCAL_HOST;
2218 default:
2219 return MGMT_DEV_DISCONN_UNKNOWN;
2220 }
2221 }
2222
2223 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2224 {
2225 struct hci_ev_disconn_complete *ev = (void *) skb->data;
2226 u8 reason = hci_to_mgmt_reason(ev->reason);
2227 struct hci_conn_params *params;
2228 struct hci_conn *conn;
2229 bool mgmt_connected;
2230 u8 type;
2231
2232 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2233
2234 hci_dev_lock(hdev);
2235
2236 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2237 if (!conn)
2238 goto unlock;
2239
2240 if (ev->status) {
2241 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2242 conn->dst_type, ev->status);
2243 goto unlock;
2244 }
2245
2246 conn->state = BT_CLOSED;
2247
2248 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2249 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2250 reason, mgmt_connected);
2251
2252 if (conn->type == ACL_LINK) {
2253 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2254 hci_remove_link_key(hdev, &conn->dst);
2255
2256 hci_update_page_scan(hdev, NULL);
2257 }
2258
2259 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2260 if (params) {
2261 switch (params->auto_connect) {
2262 case HCI_AUTO_CONN_LINK_LOSS:
2263 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2264 break;
2265 /* Fall through */
2266
2267 case HCI_AUTO_CONN_DIRECT:
2268 case HCI_AUTO_CONN_ALWAYS:
2269 list_del_init(&params->action);
2270 list_add(&params->action, &hdev->pend_le_conns);
2271 hci_update_background_scan(hdev);
2272 break;
2273
2274 default:
2275 break;
2276 }
2277 }
2278
2279 type = conn->type;
2280
2281 hci_proto_disconn_cfm(conn, ev->reason);
2282 hci_conn_del(conn);
2283
2284 /* Re-enable advertising if necessary, since it might
2285 * have been disabled by the connection. From the
2286 * HCI_LE_Set_Advertise_Enable command description in
2287 * the core specification (v4.0):
2288 * "The Controller shall continue advertising until the Host
2289 * issues an LE_Set_Advertise_Enable command with
2290 * Advertising_Enable set to 0x00 (Advertising is disabled)
2291 * or until a connection is created or until the Advertising
2292 * is timed out due to Directed Advertising."
2293 */
2294 if (type == LE_LINK)
2295 mgmt_reenable_advertising(hdev);
2296
2297 unlock:
2298 hci_dev_unlock(hdev);
2299 }
2300
2301 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2302 {
2303 struct hci_ev_auth_complete *ev = (void *) skb->data;
2304 struct hci_conn *conn;
2305
2306 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2307
2308 hci_dev_lock(hdev);
2309
2310 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2311 if (!conn)
2312 goto unlock;
2313
2314 if (!ev->status) {
2315 if (!hci_conn_ssp_enabled(conn) &&
2316 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2317 BT_INFO("re-auth of legacy device is not possible.");
2318 } else {
2319 set_bit(HCI_CONN_AUTH, &conn->flags);
2320 conn->sec_level = conn->pending_sec_level;
2321 }
2322 } else {
2323 mgmt_auth_failed(conn, ev->status);
2324 }
2325
2326 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2327 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
2328
2329 if (conn->state == BT_CONFIG) {
2330 if (!ev->status && hci_conn_ssp_enabled(conn)) {
2331 struct hci_cp_set_conn_encrypt cp;
2332 cp.handle = ev->handle;
2333 cp.encrypt = 0x01;
2334 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2335 &cp);
2336 } else {
2337 conn->state = BT_CONNECTED;
2338 hci_proto_connect_cfm(conn, ev->status);
2339 hci_conn_drop(conn);
2340 }
2341 } else {
2342 hci_auth_cfm(conn, ev->status);
2343
2344 hci_conn_hold(conn);
2345 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2346 hci_conn_drop(conn);
2347 }
2348
2349 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2350 if (!ev->status) {
2351 struct hci_cp_set_conn_encrypt cp;
2352 cp.handle = ev->handle;
2353 cp.encrypt = 0x01;
2354 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2355 &cp);
2356 } else {
2357 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2358 hci_encrypt_cfm(conn, ev->status, 0x00);
2359 }
2360 }
2361
2362 unlock:
2363 hci_dev_unlock(hdev);
2364 }
2365
2366 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
2367 {
2368 struct hci_ev_remote_name *ev = (void *) skb->data;
2369 struct hci_conn *conn;
2370
2371 BT_DBG("%s", hdev->name);
2372
2373 hci_conn_check_pending(hdev);
2374
2375 hci_dev_lock(hdev);
2376
2377 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2378
2379 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
2380 goto check_auth;
2381
2382 if (ev->status == 0)
2383 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2384 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2385 else
2386 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
2387
2388 check_auth:
2389 if (!conn)
2390 goto unlock;
2391
2392 if (!hci_outgoing_auth_needed(hdev, conn))
2393 goto unlock;
2394
2395 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2396 struct hci_cp_auth_requested cp;
2397
2398 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2399
2400 cp.handle = __cpu_to_le16(conn->handle);
2401 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
2402 }
2403
2404 unlock:
2405 hci_dev_unlock(hdev);
2406 }
2407
2408 static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2409 {
2410 struct hci_ev_encrypt_change *ev = (void *) skb->data;
2411 struct hci_conn *conn;
2412
2413 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2414
2415 hci_dev_lock(hdev);
2416
2417 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2418 if (!conn)
2419 goto unlock;
2420
2421 if (!ev->status) {
2422 if (ev->encrypt) {
2423 /* Encryption implies authentication */
2424 set_bit(HCI_CONN_AUTH, &conn->flags);
2425 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2426 conn->sec_level = conn->pending_sec_level;
2427
2428 /* P-256 authentication key implies FIPS */
2429 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2430 set_bit(HCI_CONN_FIPS, &conn->flags);
2431
2432 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
2433 conn->type == LE_LINK)
2434 set_bit(HCI_CONN_AES_CCM, &conn->flags);
2435 } else {
2436 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2437 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
2438 }
2439 }
2440
2441 /* We should disregard the current RPA and generate a new one
2442 * whenever the encryption procedure fails.
2443 */
2444 if (ev->status && conn->type == LE_LINK)
2445 set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
2446
2447 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2448
2449 if (ev->status && conn->state == BT_CONNECTED) {
2450 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2451 hci_conn_drop(conn);
2452 goto unlock;
2453 }
2454
2455 if (conn->state == BT_CONFIG) {
2456 if (!ev->status)
2457 conn->state = BT_CONNECTED;
2458
2459 /* In Secure Connections Only mode, do not allow any
2460 * connections that are not encrypted with AES-CCM
2461 * using a P-256 authenticated combination key.
2462 */
2463 if (test_bit(HCI_SC_ONLY, &hdev->dev_flags) &&
2464 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
2465 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
2466 hci_proto_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
2467 hci_conn_drop(conn);
2468 goto unlock;
2469 }
2470
2471 hci_proto_connect_cfm(conn, ev->status);
2472 hci_conn_drop(conn);
2473 } else
2474 hci_encrypt_cfm(conn, ev->status, ev->encrypt);
2475
2476 unlock:
2477 hci_dev_unlock(hdev);
2478 }
2479
2480 static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
2481 struct sk_buff *skb)
2482 {
2483 struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
2484 struct hci_conn *conn;
2485
2486 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2487
2488 hci_dev_lock(hdev);
2489
2490 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2491 if (conn) {
2492 if (!ev->status)
2493 set_bit(HCI_CONN_SECURE, &conn->flags);
2494
2495 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
2496
2497 hci_key_change_cfm(conn, ev->status);
2498 }
2499
2500 hci_dev_unlock(hdev);
2501 }
2502
2503 static void hci_remote_features_evt(struct hci_dev *hdev,
2504 struct sk_buff *skb)
2505 {
2506 struct hci_ev_remote_features *ev = (void *) skb->data;
2507 struct hci_conn *conn;
2508
2509 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2510
2511 hci_dev_lock(hdev);
2512
2513 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2514 if (!conn)
2515 goto unlock;
2516
2517 if (!ev->status)
2518 memcpy(conn->features[0], ev->features, 8);
2519
2520 if (conn->state != BT_CONFIG)
2521 goto unlock;
2522
2523 if (!ev->status && lmp_ssp_capable(hdev) && lmp_ssp_capable(conn)) {
2524 struct hci_cp_read_remote_ext_features cp;
2525 cp.handle = ev->handle;
2526 cp.page = 0x01;
2527 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
2528 sizeof(cp), &cp);
2529 goto unlock;
2530 }
2531
2532 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
2533 struct hci_cp_remote_name_req cp;
2534 memset(&cp, 0, sizeof(cp));
2535 bacpy(&cp.bdaddr, &conn->dst);
2536 cp.pscan_rep_mode = 0x02;
2537 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2538 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2539 mgmt_device_connected(hdev, &conn->dst, conn->type,
2540 conn->dst_type, 0, NULL, 0,
2541 conn->dev_class);
2542
2543 if (!hci_outgoing_auth_needed(hdev, conn)) {
2544 conn->state = BT_CONNECTED;
2545 hci_proto_connect_cfm(conn, ev->status);
2546 hci_conn_drop(conn);
2547 }
2548
2549 unlock:
2550 hci_dev_unlock(hdev);
2551 }
2552
2553 static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2554 {
2555 struct hci_ev_cmd_complete *ev = (void *) skb->data;
2556 u8 status = skb->data[sizeof(*ev)];
2557 __u16 opcode;
2558
2559 skb_pull(skb, sizeof(*ev));
2560
2561 opcode = __le16_to_cpu(ev->opcode);
2562
2563 switch (opcode) {
2564 case HCI_OP_INQUIRY_CANCEL:
2565 hci_cc_inquiry_cancel(hdev, skb);
2566 break;
2567
2568 case HCI_OP_PERIODIC_INQ:
2569 hci_cc_periodic_inq(hdev, skb);
2570 break;
2571
2572 case HCI_OP_EXIT_PERIODIC_INQ:
2573 hci_cc_exit_periodic_inq(hdev, skb);
2574 break;
2575
2576 case HCI_OP_REMOTE_NAME_REQ_CANCEL:
2577 hci_cc_remote_name_req_cancel(hdev, skb);
2578 break;
2579
2580 case HCI_OP_ROLE_DISCOVERY:
2581 hci_cc_role_discovery(hdev, skb);
2582 break;
2583
2584 case HCI_OP_READ_LINK_POLICY:
2585 hci_cc_read_link_policy(hdev, skb);
2586 break;
2587
2588 case HCI_OP_WRITE_LINK_POLICY:
2589 hci_cc_write_link_policy(hdev, skb);
2590 break;
2591
2592 case HCI_OP_READ_DEF_LINK_POLICY:
2593 hci_cc_read_def_link_policy(hdev, skb);
2594 break;
2595
2596 case HCI_OP_WRITE_DEF_LINK_POLICY:
2597 hci_cc_write_def_link_policy(hdev, skb);
2598 break;
2599
2600 case HCI_OP_RESET:
2601 hci_cc_reset(hdev, skb);
2602 break;
2603
2604 case HCI_OP_WRITE_LOCAL_NAME:
2605 hci_cc_write_local_name(hdev, skb);
2606 break;
2607
2608 case HCI_OP_READ_LOCAL_NAME:
2609 hci_cc_read_local_name(hdev, skb);
2610 break;
2611
2612 case HCI_OP_WRITE_AUTH_ENABLE:
2613 hci_cc_write_auth_enable(hdev, skb);
2614 break;
2615
2616 case HCI_OP_WRITE_ENCRYPT_MODE:
2617 hci_cc_write_encrypt_mode(hdev, skb);
2618 break;
2619
2620 case HCI_OP_WRITE_SCAN_ENABLE:
2621 hci_cc_write_scan_enable(hdev, skb);
2622 break;
2623
2624 case HCI_OP_READ_CLASS_OF_DEV:
2625 hci_cc_read_class_of_dev(hdev, skb);
2626 break;
2627
2628 case HCI_OP_WRITE_CLASS_OF_DEV:
2629 hci_cc_write_class_of_dev(hdev, skb);
2630 break;
2631
2632 case HCI_OP_READ_VOICE_SETTING:
2633 hci_cc_read_voice_setting(hdev, skb);
2634 break;
2635
2636 case HCI_OP_WRITE_VOICE_SETTING:
2637 hci_cc_write_voice_setting(hdev, skb);
2638 break;
2639
2640 case HCI_OP_READ_NUM_SUPPORTED_IAC:
2641 hci_cc_read_num_supported_iac(hdev, skb);
2642 break;
2643
2644 case HCI_OP_WRITE_SSP_MODE:
2645 hci_cc_write_ssp_mode(hdev, skb);
2646 break;
2647
2648 case HCI_OP_WRITE_SC_SUPPORT:
2649 hci_cc_write_sc_support(hdev, skb);
2650 break;
2651
2652 case HCI_OP_READ_LOCAL_VERSION:
2653 hci_cc_read_local_version(hdev, skb);
2654 break;
2655
2656 case HCI_OP_READ_LOCAL_COMMANDS:
2657 hci_cc_read_local_commands(hdev, skb);
2658 break;
2659
2660 case HCI_OP_READ_LOCAL_FEATURES:
2661 hci_cc_read_local_features(hdev, skb);
2662 break;
2663
2664 case HCI_OP_READ_LOCAL_EXT_FEATURES:
2665 hci_cc_read_local_ext_features(hdev, skb);
2666 break;
2667
2668 case HCI_OP_READ_BUFFER_SIZE:
2669 hci_cc_read_buffer_size(hdev, skb);
2670 break;
2671
2672 case HCI_OP_READ_BD_ADDR:
2673 hci_cc_read_bd_addr(hdev, skb);
2674 break;
2675
2676 case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
2677 hci_cc_read_page_scan_activity(hdev, skb);
2678 break;
2679
2680 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
2681 hci_cc_write_page_scan_activity(hdev, skb);
2682 break;
2683
2684 case HCI_OP_READ_PAGE_SCAN_TYPE:
2685 hci_cc_read_page_scan_type(hdev, skb);
2686 break;
2687
2688 case HCI_OP_WRITE_PAGE_SCAN_TYPE:
2689 hci_cc_write_page_scan_type(hdev, skb);
2690 break;
2691
2692 case HCI_OP_READ_DATA_BLOCK_SIZE:
2693 hci_cc_read_data_block_size(hdev, skb);
2694 break;
2695
2696 case HCI_OP_READ_FLOW_CONTROL_MODE:
2697 hci_cc_read_flow_control_mode(hdev, skb);
2698 break;
2699
2700 case HCI_OP_READ_LOCAL_AMP_INFO:
2701 hci_cc_read_local_amp_info(hdev, skb);
2702 break;
2703
2704 case HCI_OP_READ_CLOCK:
2705 hci_cc_read_clock(hdev, skb);
2706 break;
2707
2708 case HCI_OP_READ_LOCAL_AMP_ASSOC:
2709 hci_cc_read_local_amp_assoc(hdev, skb);
2710 break;
2711
2712 case HCI_OP_READ_INQ_RSP_TX_POWER:
2713 hci_cc_read_inq_rsp_tx_power(hdev, skb);
2714 break;
2715
2716 case HCI_OP_PIN_CODE_REPLY:
2717 hci_cc_pin_code_reply(hdev, skb);
2718 break;
2719
2720 case HCI_OP_PIN_CODE_NEG_REPLY:
2721 hci_cc_pin_code_neg_reply(hdev, skb);
2722 break;
2723
2724 case HCI_OP_READ_LOCAL_OOB_DATA:
2725 hci_cc_read_local_oob_data(hdev, skb);
2726 break;
2727
2728 case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
2729 hci_cc_read_local_oob_ext_data(hdev, skb);
2730 break;
2731
2732 case HCI_OP_LE_READ_BUFFER_SIZE:
2733 hci_cc_le_read_buffer_size(hdev, skb);
2734 break;
2735
2736 case HCI_OP_LE_READ_LOCAL_FEATURES:
2737 hci_cc_le_read_local_features(hdev, skb);
2738 break;
2739
2740 case HCI_OP_LE_READ_ADV_TX_POWER:
2741 hci_cc_le_read_adv_tx_power(hdev, skb);
2742 break;
2743
2744 case HCI_OP_USER_CONFIRM_REPLY:
2745 hci_cc_user_confirm_reply(hdev, skb);
2746 break;
2747
2748 case HCI_OP_USER_CONFIRM_NEG_REPLY:
2749 hci_cc_user_confirm_neg_reply(hdev, skb);
2750 break;
2751
2752 case HCI_OP_USER_PASSKEY_REPLY:
2753 hci_cc_user_passkey_reply(hdev, skb);
2754 break;
2755
2756 case HCI_OP_USER_PASSKEY_NEG_REPLY:
2757 hci_cc_user_passkey_neg_reply(hdev, skb);
2758 break;
2759
2760 case HCI_OP_LE_SET_RANDOM_ADDR:
2761 hci_cc_le_set_random_addr(hdev, skb);
2762 break;
2763
2764 case HCI_OP_LE_SET_ADV_ENABLE:
2765 hci_cc_le_set_adv_enable(hdev, skb);
2766 break;
2767
2768 case HCI_OP_LE_SET_SCAN_PARAM:
2769 hci_cc_le_set_scan_param(hdev, skb);
2770 break;
2771
2772 case HCI_OP_LE_SET_SCAN_ENABLE:
2773 hci_cc_le_set_scan_enable(hdev, skb);
2774 break;
2775
2776 case HCI_OP_LE_READ_WHITE_LIST_SIZE:
2777 hci_cc_le_read_white_list_size(hdev, skb);
2778 break;
2779
2780 case HCI_OP_LE_CLEAR_WHITE_LIST:
2781 hci_cc_le_clear_white_list(hdev, skb);
2782 break;
2783
2784 case HCI_OP_LE_ADD_TO_WHITE_LIST:
2785 hci_cc_le_add_to_white_list(hdev, skb);
2786 break;
2787
2788 case HCI_OP_LE_DEL_FROM_WHITE_LIST:
2789 hci_cc_le_del_from_white_list(hdev, skb);
2790 break;
2791
2792 case HCI_OP_LE_READ_SUPPORTED_STATES:
2793 hci_cc_le_read_supported_states(hdev, skb);
2794 break;
2795
2796 case HCI_OP_WRITE_LE_HOST_SUPPORTED:
2797 hci_cc_write_le_host_supported(hdev, skb);
2798 break;
2799
2800 case HCI_OP_LE_SET_ADV_PARAM:
2801 hci_cc_set_adv_param(hdev, skb);
2802 break;
2803
2804 case HCI_OP_WRITE_REMOTE_AMP_ASSOC:
2805 hci_cc_write_remote_amp_assoc(hdev, skb);
2806 break;
2807
2808 case HCI_OP_READ_RSSI:
2809 hci_cc_read_rssi(hdev, skb);
2810 break;
2811
2812 case HCI_OP_READ_TX_POWER:
2813 hci_cc_read_tx_power(hdev, skb);
2814 break;
2815
2816 default:
2817 BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
2818 break;
2819 }
2820
2821 if (opcode != HCI_OP_NOP)
2822 cancel_delayed_work(&hdev->cmd_timer);
2823
2824 hci_req_cmd_complete(hdev, opcode, status);
2825
2826 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
2827 atomic_set(&hdev->cmd_cnt, 1);
2828 if (!skb_queue_empty(&hdev->cmd_q))
2829 queue_work(hdev->workqueue, &hdev->cmd_work);
2830 }
2831 }
2832
2833 static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
2834 {
2835 struct hci_ev_cmd_status *ev = (void *) skb->data;
2836 __u16 opcode;
2837
2838 skb_pull(skb, sizeof(*ev));
2839
2840 opcode = __le16_to_cpu(ev->opcode);
2841
2842 switch (opcode) {
2843 case HCI_OP_INQUIRY:
2844 hci_cs_inquiry(hdev, ev->status);
2845 break;
2846
2847 case HCI_OP_CREATE_CONN:
2848 hci_cs_create_conn(hdev, ev->status);
2849 break;
2850
2851 case HCI_OP_ADD_SCO:
2852 hci_cs_add_sco(hdev, ev->status);
2853 break;
2854
2855 case HCI_OP_AUTH_REQUESTED:
2856 hci_cs_auth_requested(hdev, ev->status);
2857 break;
2858
2859 case HCI_OP_SET_CONN_ENCRYPT:
2860 hci_cs_set_conn_encrypt(hdev, ev->status);
2861 break;
2862
2863 case HCI_OP_REMOTE_NAME_REQ:
2864 hci_cs_remote_name_req(hdev, ev->status);
2865 break;
2866
2867 case HCI_OP_READ_REMOTE_FEATURES:
2868 hci_cs_read_remote_features(hdev, ev->status);
2869 break;
2870
2871 case HCI_OP_READ_REMOTE_EXT_FEATURES:
2872 hci_cs_read_remote_ext_features(hdev, ev->status);
2873 break;
2874
2875 case HCI_OP_SETUP_SYNC_CONN:
2876 hci_cs_setup_sync_conn(hdev, ev->status);
2877 break;
2878
2879 case HCI_OP_SNIFF_MODE:
2880 hci_cs_sniff_mode(hdev, ev->status);
2881 break;
2882
2883 case HCI_OP_EXIT_SNIFF_MODE:
2884 hci_cs_exit_sniff_mode(hdev, ev->status);
2885 break;
2886
2887 case HCI_OP_DISCONNECT:
2888 hci_cs_disconnect(hdev, ev->status);
2889 break;
2890
2891 case HCI_OP_CREATE_PHY_LINK:
2892 hci_cs_create_phylink(hdev, ev->status);
2893 break;
2894
2895 case HCI_OP_ACCEPT_PHY_LINK:
2896 hci_cs_accept_phylink(hdev, ev->status);
2897 break;
2898
2899 case HCI_OP_LE_CREATE_CONN:
2900 hci_cs_le_create_conn(hdev, ev->status);
2901 break;
2902
2903 case HCI_OP_LE_START_ENC:
2904 hci_cs_le_start_enc(hdev, ev->status);
2905 break;
2906
2907 default:
2908 BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
2909 break;
2910 }
2911
2912 if (opcode != HCI_OP_NOP)
2913 cancel_delayed_work(&hdev->cmd_timer);
2914
2915 if (ev->status ||
2916 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req.event))
2917 hci_req_cmd_complete(hdev, opcode, ev->status);
2918
2919 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
2920 atomic_set(&hdev->cmd_cnt, 1);
2921 if (!skb_queue_empty(&hdev->cmd_q))
2922 queue_work(hdev->workqueue, &hdev->cmd_work);
2923 }
2924 }
2925
2926 static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2927 {
2928 struct hci_ev_role_change *ev = (void *) skb->data;
2929 struct hci_conn *conn;
2930
2931 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2932
2933 hci_dev_lock(hdev);
2934
2935 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2936 if (conn) {
2937 if (!ev->status)
2938 conn->role = ev->role;
2939
2940 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
2941
2942 hci_role_switch_cfm(conn, ev->status, ev->role);
2943 }
2944
2945 hci_dev_unlock(hdev);
2946 }
2947
2948 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
2949 {
2950 struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
2951 int i;
2952
2953 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
2954 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
2955 return;
2956 }
2957
2958 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
2959 ev->num_hndl * sizeof(struct hci_comp_pkts_info)) {
2960 BT_DBG("%s bad parameters", hdev->name);
2961 return;
2962 }
2963
2964 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
2965
2966 for (i = 0; i < ev->num_hndl; i++) {
2967 struct hci_comp_pkts_info *info = &ev->handles[i];
2968 struct hci_conn *conn;
2969 __u16 handle, count;
2970
2971 handle = __le16_to_cpu(info->handle);
2972 count = __le16_to_cpu(info->count);
2973
2974 conn = hci_conn_hash_lookup_handle(hdev, handle);
2975 if (!conn)
2976 continue;
2977
2978 conn->sent -= count;
2979
2980 switch (conn->type) {
2981 case ACL_LINK:
2982 hdev->acl_cnt += count;
2983 if (hdev->acl_cnt > hdev->acl_pkts)
2984 hdev->acl_cnt = hdev->acl_pkts;
2985 break;
2986
2987 case LE_LINK:
2988 if (hdev->le_pkts) {
2989 hdev->le_cnt += count;
2990 if (hdev->le_cnt > hdev->le_pkts)
2991 hdev->le_cnt = hdev->le_pkts;
2992 } else {
2993 hdev->acl_cnt += count;
2994 if (hdev->acl_cnt > hdev->acl_pkts)
2995 hdev->acl_cnt = hdev->acl_pkts;
2996 }
2997 break;
2998
2999 case SCO_LINK:
3000 hdev->sco_cnt += count;
3001 if (hdev->sco_cnt > hdev->sco_pkts)
3002 hdev->sco_cnt = hdev->sco_pkts;
3003 break;
3004
3005 default:
3006 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3007 break;
3008 }
3009 }
3010
3011 queue_work(hdev->workqueue, &hdev->tx_work);
3012 }
3013
3014 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
3015 __u16 handle)
3016 {
3017 struct hci_chan *chan;
3018
3019 switch (hdev->dev_type) {
3020 case HCI_BREDR:
3021 return hci_conn_hash_lookup_handle(hdev, handle);
3022 case HCI_AMP:
3023 chan = hci_chan_lookup_handle(hdev, handle);
3024 if (chan)
3025 return chan->conn;
3026 break;
3027 default:
3028 BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type);
3029 break;
3030 }
3031
3032 return NULL;
3033 }
3034
3035 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3036 {
3037 struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
3038 int i;
3039
3040 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
3041 BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
3042 return;
3043 }
3044
3045 if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3046 ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3047 BT_DBG("%s bad parameters", hdev->name);
3048 return;
3049 }
3050
3051 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3052 ev->num_hndl);
3053
3054 for (i = 0; i < ev->num_hndl; i++) {
3055 struct hci_comp_blocks_info *info = &ev->handles[i];
3056 struct hci_conn *conn = NULL;
3057 __u16 handle, block_count;
3058
3059 handle = __le16_to_cpu(info->handle);
3060 block_count = __le16_to_cpu(info->blocks);
3061
3062 conn = __hci_conn_lookup_handle(hdev, handle);
3063 if (!conn)
3064 continue;
3065
3066 conn->sent -= block_count;
3067
3068 switch (conn->type) {
3069 case ACL_LINK:
3070 case AMP_LINK:
3071 hdev->block_cnt += block_count;
3072 if (hdev->block_cnt > hdev->num_blocks)
3073 hdev->block_cnt = hdev->num_blocks;
3074 break;
3075
3076 default:
3077 BT_ERR("Unknown type %d conn %p", conn->type, conn);
3078 break;
3079 }
3080 }
3081
3082 queue_work(hdev->workqueue, &hdev->tx_work);
3083 }
3084
3085 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3086 {
3087 struct hci_ev_mode_change *ev = (void *) skb->data;
3088 struct hci_conn *conn;
3089
3090 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3091
3092 hci_dev_lock(hdev);
3093
3094 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3095 if (conn) {
3096 conn->mode = ev->mode;
3097
3098 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
3099 &conn->flags)) {
3100 if (conn->mode == HCI_CM_ACTIVE)
3101 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3102 else
3103 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3104 }
3105
3106 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3107 hci_sco_setup(conn, ev->status);
3108 }
3109
3110 hci_dev_unlock(hdev);
3111 }
3112
3113 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3114 {
3115 struct hci_ev_pin_code_req *ev = (void *) skb->data;
3116 struct hci_conn *conn;
3117
3118 BT_DBG("%s", hdev->name);
3119
3120 hci_dev_lock(hdev);
3121
3122 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3123 if (!conn)
3124 goto unlock;
3125
3126 if (conn->state == BT_CONNECTED) {
3127 hci_conn_hold(conn);
3128 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3129 hci_conn_drop(conn);
3130 }
3131
3132 if (!test_bit(HCI_BONDABLE, &hdev->dev_flags) &&
3133 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3134 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3135 sizeof(ev->bdaddr), &ev->bdaddr);
3136 } else if (test_bit(HCI_MGMT, &hdev->dev_flags)) {
3137 u8 secure;
3138
3139 if (conn->pending_sec_level == BT_SECURITY_HIGH)
3140 secure = 1;
3141 else
3142 secure = 0;
3143
3144 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3145 }
3146
3147 unlock:
3148 hci_dev_unlock(hdev);
3149 }
3150
3151 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3152 {
3153 struct hci_ev_link_key_req *ev = (void *) skb->data;
3154 struct hci_cp_link_key_reply cp;
3155 struct hci_conn *conn;
3156 struct link_key *key;
3157
3158 BT_DBG("%s", hdev->name);
3159
3160 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3161 return;
3162
3163 hci_dev_lock(hdev);
3164
3165 key = hci_find_link_key(hdev, &ev->bdaddr);
3166 if (!key) {
3167 BT_DBG("%s link key not found for %pMR", hdev->name,
3168 &ev->bdaddr);
3169 goto not_found;
3170 }
3171
3172 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
3173 &ev->bdaddr);
3174
3175 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3176 if (conn) {
3177 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
3178 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3179 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3180 BT_DBG("%s ignoring unauthenticated key", hdev->name);
3181 goto not_found;
3182 }
3183
3184 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3185 (conn->pending_sec_level == BT_SECURITY_HIGH ||
3186 conn->pending_sec_level == BT_SECURITY_FIPS)) {
3187 BT_DBG("%s ignoring key unauthenticated for high security",
3188 hdev->name);
3189 goto not_found;
3190 }
3191
3192 conn->key_type = key->type;
3193 conn->pin_length = key->pin_len;
3194 }
3195
3196 bacpy(&cp.bdaddr, &ev->bdaddr);
3197 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3198
3199 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
3200
3201 hci_dev_unlock(hdev);
3202
3203 return;
3204
3205 not_found:
3206 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
3207 hci_dev_unlock(hdev);
3208 }
3209
3210 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3211 {
3212 struct hci_ev_link_key_notify *ev = (void *) skb->data;
3213 struct hci_conn *conn;
3214 struct link_key *key;
3215 bool persistent;
3216 u8 pin_len = 0;
3217
3218 BT_DBG("%s", hdev->name);
3219
3220 hci_dev_lock(hdev);
3221
3222 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3223 if (conn) {
3224 hci_conn_hold(conn);
3225 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3226 pin_len = conn->pin_length;
3227
3228 if (ev->key_type != HCI_LK_CHANGED_COMBINATION)
3229 conn->key_type = ev->key_type;
3230
3231 hci_conn_drop(conn);
3232 }
3233
3234 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3235 goto unlock;
3236
3237 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
3238 ev->key_type, pin_len, &persistent);
3239 if (!key)
3240 goto unlock;
3241
3242 mgmt_new_link_key(hdev, key, persistent);
3243
3244 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
3245 * is set. If it's not set simply remove the key from the kernel
3246 * list (we've still notified user space about it but with
3247 * store_hint being 0).
3248 */
3249 if (key->type == HCI_LK_DEBUG_COMBINATION &&
3250 !test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags)) {
3251 list_del(&key->list);
3252 kfree(key);
3253 } else if (conn) {
3254 if (persistent)
3255 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3256 else
3257 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
3258 }
3259
3260 unlock:
3261 hci_dev_unlock(hdev);
3262 }
3263
3264 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
3265 {
3266 struct hci_ev_clock_offset *ev = (void *) skb->data;
3267 struct hci_conn *conn;
3268
3269 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3270
3271 hci_dev_lock(hdev);
3272
3273 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3274 if (conn && !ev->status) {
3275 struct inquiry_entry *ie;
3276
3277 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3278 if (ie) {
3279 ie->data.clock_offset = ev->clock_offset;
3280 ie->timestamp = jiffies;
3281 }
3282 }
3283
3284 hci_dev_unlock(hdev);
3285 }
3286
3287 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3288 {
3289 struct hci_ev_pkt_type_change *ev = (void *) skb->data;
3290 struct hci_conn *conn;
3291
3292 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3293
3294 hci_dev_lock(hdev);
3295
3296 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3297 if (conn && !ev->status)
3298 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
3299
3300 hci_dev_unlock(hdev);
3301 }
3302
3303 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3304 {
3305 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3306 struct inquiry_entry *ie;
3307
3308 BT_DBG("%s", hdev->name);
3309
3310 hci_dev_lock(hdev);
3311
3312 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3313 if (ie) {
3314 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
3315 ie->timestamp = jiffies;
3316 }
3317
3318 hci_dev_unlock(hdev);
3319 }
3320
3321 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
3322 struct sk_buff *skb)
3323 {
3324 struct inquiry_data data;
3325 int num_rsp = *((__u8 *) skb->data);
3326
3327 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3328
3329 if (!num_rsp)
3330 return;
3331
3332 if (test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags))
3333 return;
3334
3335 hci_dev_lock(hdev);
3336
3337 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3338 struct inquiry_info_with_rssi_and_pscan_mode *info;
3339 info = (void *) (skb->data + 1);
3340
3341 for (; num_rsp; num_rsp--, info++) {
3342 u32 flags;
3343
3344 bacpy(&data.bdaddr, &info->bdaddr);
3345 data.pscan_rep_mode = info->pscan_rep_mode;
3346 data.pscan_period_mode = info->pscan_period_mode;
3347 data.pscan_mode = info->pscan_mode;
3348 memcpy(data.dev_class, info->dev_class, 3);
3349 data.clock_offset = info->clock_offset;
3350 data.rssi = info->rssi;
3351 data.ssp_mode = 0x00;
3352
3353 flags = hci_inquiry_cache_update(hdev, &data, false);
3354
3355 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3356 info->dev_class, info->rssi,
3357 flags, NULL, 0, NULL, 0);
3358 }
3359 } else {
3360 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
3361
3362 for (; num_rsp; num_rsp--, info++) {
3363 u32 flags;
3364
3365 bacpy(&data.bdaddr, &info->bdaddr);
3366 data.pscan_rep_mode = info->pscan_rep_mode;
3367 data.pscan_period_mode = info->pscan_period_mode;
3368 data.pscan_mode = 0x00;
3369 memcpy(data.dev_class, info->dev_class, 3);
3370 data.clock_offset = info->clock_offset;
3371 data.rssi = info->rssi;
3372 data.ssp_mode = 0x00;
3373
3374 flags = hci_inquiry_cache_update(hdev, &data, false);
3375
3376 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3377 info->dev_class, info->rssi,
3378 flags, NULL, 0, NULL, 0);
3379 }
3380 }
3381
3382 hci_dev_unlock(hdev);
3383 }
3384
3385 static void hci_remote_ext_features_evt(struct hci_dev *hdev,
3386 struct sk_buff *skb)
3387 {
3388 struct hci_ev_remote_ext_features *ev = (void *) skb->data;
3389 struct hci_conn *conn;
3390
3391 BT_DBG("%s", hdev->name);
3392
3393 hci_dev_lock(hdev);
3394
3395 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3396 if (!conn)
3397 goto unlock;
3398
3399 if (ev->page < HCI_MAX_PAGES)
3400 memcpy(conn->features[ev->page], ev->features, 8);
3401
3402 if (!ev->status && ev->page == 0x01) {
3403 struct inquiry_entry *ie;
3404
3405 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
3406 if (ie)
3407 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3408
3409 if (ev->features[0] & LMP_HOST_SSP) {
3410 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3411 } else {
3412 /* It is mandatory by the Bluetooth specification that
3413 * Extended Inquiry Results are only used when Secure
3414 * Simple Pairing is enabled, but some devices violate
3415 * this.
3416 *
3417 * To make these devices work, the internal SSP
3418 * enabled flag needs to be cleared if the remote host
3419 * features do not indicate SSP support */
3420 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3421 }
3422
3423 if (ev->features[0] & LMP_HOST_SC)
3424 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3425 }
3426
3427 if (conn->state != BT_CONFIG)
3428 goto unlock;
3429
3430 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3431 struct hci_cp_remote_name_req cp;
3432 memset(&cp, 0, sizeof(cp));
3433 bacpy(&cp.bdaddr, &conn->dst);
3434 cp.pscan_rep_mode = 0x02;
3435 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3436 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3437 mgmt_device_connected(hdev, &conn->dst, conn->type,
3438 conn->dst_type, 0, NULL, 0,
3439 conn->dev_class);
3440
3441 if (!hci_outgoing_auth_needed(hdev, conn)) {
3442 conn->state = BT_CONNECTED;
3443 hci_proto_connect_cfm(conn, ev->status);
3444 hci_conn_drop(conn);
3445 }
3446
3447 unlock:
3448 hci_dev_unlock(hdev);
3449 }
3450
3451 static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
3452 struct sk_buff *skb)
3453 {
3454 struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
3455 struct hci_conn *conn;
3456
3457 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3458
3459 hci_dev_lock(hdev);
3460
3461 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3462 if (!conn) {
3463 if (ev->link_type == ESCO_LINK)
3464 goto unlock;
3465
3466 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
3467 if (!conn)
3468 goto unlock;
3469
3470 conn->type = SCO_LINK;
3471 }
3472
3473 switch (ev->status) {
3474 case 0x00:
3475 conn->handle = __le16_to_cpu(ev->handle);
3476 conn->state = BT_CONNECTED;
3477
3478 hci_conn_add_sysfs(conn);
3479 break;
3480
3481 case 0x10: /* Connection Accept Timeout */
3482 case 0x0d: /* Connection Rejected due to Limited Resources */
3483 case 0x11: /* Unsupported Feature or Parameter Value */
3484 case 0x1c: /* SCO interval rejected */
3485 case 0x1a: /* Unsupported Remote Feature */
3486 case 0x1f: /* Unspecified error */
3487 case 0x20: /* Unsupported LMP Parameter value */
3488 if (conn->out) {
3489 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
3490 (hdev->esco_type & EDR_ESCO_MASK);
3491 if (hci_setup_sync(conn, conn->link->handle))
3492 goto unlock;
3493 }
3494 /* fall through */
3495
3496 default:
3497 conn->state = BT_CLOSED;
3498 break;
3499 }
3500
3501 hci_proto_connect_cfm(conn, ev->status);
3502 if (ev->status)
3503 hci_conn_del(conn);
3504
3505 unlock:
3506 hci_dev_unlock(hdev);
3507 }
3508
3509 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
3510 {
3511 size_t parsed = 0;
3512
3513 while (parsed < eir_len) {
3514 u8 field_len = eir[0];
3515
3516 if (field_len == 0)
3517 return parsed;
3518
3519 parsed += field_len + 1;
3520 eir += field_len + 1;
3521 }
3522
3523 return eir_len;
3524 }
3525
3526 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
3527 struct sk_buff *skb)
3528 {
3529 struct inquiry_data data;
3530 struct extended_inquiry_info *info = (void *) (skb->data + 1);
3531 int num_rsp = *((__u8 *) skb->data);
3532 size_t eir_len;
3533
3534 BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
3535
3536 if (!num_rsp)
3537 return;
3538
3539 if (test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags))
3540 return;
3541
3542 hci_dev_lock(hdev);
3543
3544 for (; num_rsp; num_rsp--, info++) {
3545 u32 flags;
3546 bool name_known;
3547
3548 bacpy(&data.bdaddr, &info->bdaddr);
3549 data.pscan_rep_mode = info->pscan_rep_mode;
3550 data.pscan_period_mode = info->pscan_period_mode;
3551 data.pscan_mode = 0x00;
3552 memcpy(data.dev_class, info->dev_class, 3);
3553 data.clock_offset = info->clock_offset;
3554 data.rssi = info->rssi;
3555 data.ssp_mode = 0x01;
3556
3557 if (test_bit(HCI_MGMT, &hdev->dev_flags))
3558 name_known = eir_has_data_type(info->data,
3559 sizeof(info->data),
3560 EIR_NAME_COMPLETE);
3561 else
3562 name_known = true;
3563
3564 flags = hci_inquiry_cache_update(hdev, &data, name_known);
3565
3566 eir_len = eir_get_length(info->data, sizeof(info->data));
3567
3568 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3569 info->dev_class, info->rssi,
3570 flags, info->data, eir_len, NULL, 0);
3571 }
3572
3573 hci_dev_unlock(hdev);
3574 }
3575
3576 static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
3577 struct sk_buff *skb)
3578 {
3579 struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
3580 struct hci_conn *conn;
3581
3582 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3583 __le16_to_cpu(ev->handle));
3584
3585 hci_dev_lock(hdev);
3586
3587 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3588 if (!conn)
3589 goto unlock;
3590
3591 /* For BR/EDR the necessary steps are taken through the
3592 * auth_complete event.
3593 */
3594 if (conn->type != LE_LINK)
3595 goto unlock;
3596
3597 if (!ev->status)
3598 conn->sec_level = conn->pending_sec_level;
3599
3600 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3601
3602 if (ev->status && conn->state == BT_CONNECTED) {
3603 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3604 hci_conn_drop(conn);
3605 goto unlock;
3606 }
3607
3608 if (conn->state == BT_CONFIG) {
3609 if (!ev->status)
3610 conn->state = BT_CONNECTED;
3611
3612 hci_proto_connect_cfm(conn, ev->status);
3613 hci_conn_drop(conn);
3614 } else {
3615 hci_auth_cfm(conn, ev->status);
3616
3617 hci_conn_hold(conn);
3618 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3619 hci_conn_drop(conn);
3620 }
3621
3622 unlock:
3623 hci_dev_unlock(hdev);
3624 }
3625
3626 static u8 hci_get_auth_req(struct hci_conn *conn)
3627 {
3628 /* If remote requests no-bonding follow that lead */
3629 if (conn->remote_auth == HCI_AT_NO_BONDING ||
3630 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
3631 return conn->remote_auth | (conn->auth_type & 0x01);
3632
3633 /* If both remote and local have enough IO capabilities, require
3634 * MITM protection
3635 */
3636 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
3637 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
3638 return conn->remote_auth | 0x01;
3639
3640 /* No MITM protection possible so ignore remote requirement */
3641 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
3642 }
3643
3644 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3645 {
3646 struct hci_ev_io_capa_request *ev = (void *) skb->data;
3647 struct hci_conn *conn;
3648
3649 BT_DBG("%s", hdev->name);
3650
3651 hci_dev_lock(hdev);
3652
3653 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3654 if (!conn)
3655 goto unlock;
3656
3657 hci_conn_hold(conn);
3658
3659 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3660 goto unlock;
3661
3662 /* Allow pairing if we're pairable, the initiators of the
3663 * pairing or if the remote is not requesting bonding.
3664 */
3665 if (test_bit(HCI_BONDABLE, &hdev->dev_flags) ||
3666 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
3667 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
3668 struct hci_cp_io_capability_reply cp;
3669
3670 bacpy(&cp.bdaddr, &ev->bdaddr);
3671 /* Change the IO capability from KeyboardDisplay
3672 * to DisplayYesNo as it is not supported by BT spec. */
3673 cp.capability = (conn->io_capability == 0x04) ?
3674 HCI_IO_DISPLAY_YESNO : conn->io_capability;
3675
3676 /* If we are initiators, there is no remote information yet */
3677 if (conn->remote_auth == 0xff) {
3678 /* Request MITM protection if our IO caps allow it
3679 * except for the no-bonding case.
3680 */
3681 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
3682 conn->auth_type != HCI_AT_NO_BONDING)
3683 conn->auth_type |= 0x01;
3684 } else {
3685 conn->auth_type = hci_get_auth_req(conn);
3686 }
3687
3688 /* If we're not bondable, force one of the non-bondable
3689 * authentication requirement values.
3690 */
3691 if (!test_bit(HCI_BONDABLE, &hdev->dev_flags))
3692 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
3693
3694 cp.authentication = conn->auth_type;
3695
3696 if (hci_find_remote_oob_data(hdev, &conn->dst) &&
3697 (conn->out || test_bit(HCI_CONN_REMOTE_OOB, &conn->flags)))
3698 cp.oob_data = 0x01;
3699 else
3700 cp.oob_data = 0x00;
3701
3702 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
3703 sizeof(cp), &cp);
3704 } else {
3705 struct hci_cp_io_capability_neg_reply cp;
3706
3707 bacpy(&cp.bdaddr, &ev->bdaddr);
3708 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
3709
3710 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
3711 sizeof(cp), &cp);
3712 }
3713
3714 unlock:
3715 hci_dev_unlock(hdev);
3716 }
3717
3718 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
3719 {
3720 struct hci_ev_io_capa_reply *ev = (void *) skb->data;
3721 struct hci_conn *conn;
3722
3723 BT_DBG("%s", hdev->name);
3724
3725 hci_dev_lock(hdev);
3726
3727 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3728 if (!conn)
3729 goto unlock;
3730
3731 conn->remote_cap = ev->capability;
3732 conn->remote_auth = ev->authentication;
3733 if (ev->oob_data)
3734 set_bit(HCI_CONN_REMOTE_OOB, &conn->flags);
3735
3736 unlock:
3737 hci_dev_unlock(hdev);
3738 }
3739
3740 static void hci_user_confirm_request_evt(struct hci_dev *hdev,
3741 struct sk_buff *skb)
3742 {
3743 struct hci_ev_user_confirm_req *ev = (void *) skb->data;
3744 int loc_mitm, rem_mitm, confirm_hint = 0;
3745 struct hci_conn *conn;
3746
3747 BT_DBG("%s", hdev->name);
3748
3749 hci_dev_lock(hdev);
3750
3751 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3752 goto unlock;
3753
3754 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3755 if (!conn)
3756 goto unlock;
3757
3758 loc_mitm = (conn->auth_type & 0x01);
3759 rem_mitm = (conn->remote_auth & 0x01);
3760
3761 /* If we require MITM but the remote device can't provide that
3762 * (it has NoInputNoOutput) then reject the confirmation
3763 * request. We check the security level here since it doesn't
3764 * necessarily match conn->auth_type.
3765 */
3766 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
3767 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
3768 BT_DBG("Rejecting request: remote device can't provide MITM");
3769 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
3770 sizeof(ev->bdaddr), &ev->bdaddr);
3771 goto unlock;
3772 }
3773
3774 /* If no side requires MITM protection; auto-accept */
3775 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
3776 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
3777
3778 /* If we're not the initiators request authorization to
3779 * proceed from user space (mgmt_user_confirm with
3780 * confirm_hint set to 1). The exception is if neither
3781 * side had MITM or if the local IO capability is
3782 * NoInputNoOutput, in which case we do auto-accept
3783 */
3784 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
3785 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
3786 (loc_mitm || rem_mitm)) {
3787 BT_DBG("Confirming auto-accept as acceptor");
3788 confirm_hint = 1;
3789 goto confirm;
3790 }
3791
3792 BT_DBG("Auto-accept of user confirmation with %ums delay",
3793 hdev->auto_accept_delay);
3794
3795 if (hdev->auto_accept_delay > 0) {
3796 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
3797 queue_delayed_work(conn->hdev->workqueue,
3798 &conn->auto_accept_work, delay);
3799 goto unlock;
3800 }
3801
3802 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
3803 sizeof(ev->bdaddr), &ev->bdaddr);
3804 goto unlock;
3805 }
3806
3807 confirm:
3808 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
3809 le32_to_cpu(ev->passkey), confirm_hint);
3810
3811 unlock:
3812 hci_dev_unlock(hdev);
3813 }
3814
3815 static void hci_user_passkey_request_evt(struct hci_dev *hdev,
3816 struct sk_buff *skb)
3817 {
3818 struct hci_ev_user_passkey_req *ev = (void *) skb->data;
3819
3820 BT_DBG("%s", hdev->name);
3821
3822 if (test_bit(HCI_MGMT, &hdev->dev_flags))
3823 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
3824 }
3825
3826 static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
3827 struct sk_buff *skb)
3828 {
3829 struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
3830 struct hci_conn *conn;
3831
3832 BT_DBG("%s", hdev->name);
3833
3834 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3835 if (!conn)
3836 return;
3837
3838 conn->passkey_notify = __le32_to_cpu(ev->passkey);
3839 conn->passkey_entered = 0;
3840
3841 if (test_bit(HCI_MGMT, &hdev->dev_flags))
3842 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
3843 conn->dst_type, conn->passkey_notify,
3844 conn->passkey_entered);
3845 }
3846
3847 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3848 {
3849 struct hci_ev_keypress_notify *ev = (void *) skb->data;
3850 struct hci_conn *conn;
3851
3852 BT_DBG("%s", hdev->name);
3853
3854 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3855 if (!conn)
3856 return;
3857
3858 switch (ev->type) {
3859 case HCI_KEYPRESS_STARTED:
3860 conn->passkey_entered = 0;
3861 return;
3862
3863 case HCI_KEYPRESS_ENTERED:
3864 conn->passkey_entered++;
3865 break;
3866
3867 case HCI_KEYPRESS_ERASED:
3868 conn->passkey_entered--;
3869 break;
3870
3871 case HCI_KEYPRESS_CLEARED:
3872 conn->passkey_entered = 0;
3873 break;
3874
3875 case HCI_KEYPRESS_COMPLETED:
3876 return;
3877 }
3878
3879 if (test_bit(HCI_MGMT, &hdev->dev_flags))
3880 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
3881 conn->dst_type, conn->passkey_notify,
3882 conn->passkey_entered);
3883 }
3884
3885 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
3886 struct sk_buff *skb)
3887 {
3888 struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
3889 struct hci_conn *conn;
3890
3891 BT_DBG("%s", hdev->name);
3892
3893 hci_dev_lock(hdev);
3894
3895 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3896 if (!conn)
3897 goto unlock;
3898
3899 /* Reset the authentication requirement to unknown */
3900 conn->remote_auth = 0xff;
3901
3902 /* To avoid duplicate auth_failed events to user space we check
3903 * the HCI_CONN_AUTH_PEND flag which will be set if we
3904 * initiated the authentication. A traditional auth_complete
3905 * event gets always produced as initiator and is also mapped to
3906 * the mgmt_auth_failed event */
3907 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
3908 mgmt_auth_failed(conn, ev->status);
3909
3910 hci_conn_drop(conn);
3911
3912 unlock:
3913 hci_dev_unlock(hdev);
3914 }
3915
3916 static void hci_remote_host_features_evt(struct hci_dev *hdev,
3917 struct sk_buff *skb)
3918 {
3919 struct hci_ev_remote_host_features *ev = (void *) skb->data;
3920 struct inquiry_entry *ie;
3921 struct hci_conn *conn;
3922
3923 BT_DBG("%s", hdev->name);
3924
3925 hci_dev_lock(hdev);
3926
3927 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3928 if (conn)
3929 memcpy(conn->features[1], ev->features, 8);
3930
3931 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3932 if (ie)
3933 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3934
3935 hci_dev_unlock(hdev);
3936 }
3937
3938 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
3939 struct sk_buff *skb)
3940 {
3941 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
3942 struct oob_data *data;
3943
3944 BT_DBG("%s", hdev->name);
3945
3946 hci_dev_lock(hdev);
3947
3948 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
3949 goto unlock;
3950
3951 data = hci_find_remote_oob_data(hdev, &ev->bdaddr);
3952 if (data) {
3953 if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) {
3954 struct hci_cp_remote_oob_ext_data_reply cp;
3955
3956 bacpy(&cp.bdaddr, &ev->bdaddr);
3957 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
3958 memcpy(cp.randomizer192, data->randomizer192,
3959 sizeof(cp.randomizer192));
3960 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
3961 memcpy(cp.randomizer256, data->randomizer256,
3962 sizeof(cp.randomizer256));
3963
3964 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
3965 sizeof(cp), &cp);
3966 } else {
3967 struct hci_cp_remote_oob_data_reply cp;
3968
3969 bacpy(&cp.bdaddr, &ev->bdaddr);
3970 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
3971 memcpy(cp.randomizer, data->randomizer192,
3972 sizeof(cp.randomizer));
3973
3974 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
3975 sizeof(cp), &cp);
3976 }
3977 } else {
3978 struct hci_cp_remote_oob_data_neg_reply cp;
3979
3980 bacpy(&cp.bdaddr, &ev->bdaddr);
3981 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
3982 sizeof(cp), &cp);
3983 }
3984
3985 unlock:
3986 hci_dev_unlock(hdev);
3987 }
3988
3989 static void hci_phy_link_complete_evt(struct hci_dev *hdev,
3990 struct sk_buff *skb)
3991 {
3992 struct hci_ev_phy_link_complete *ev = (void *) skb->data;
3993 struct hci_conn *hcon, *bredr_hcon;
3994
3995 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
3996 ev->status);
3997
3998 hci_dev_lock(hdev);
3999
4000 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4001 if (!hcon) {
4002 hci_dev_unlock(hdev);
4003 return;
4004 }
4005
4006 if (ev->status) {
4007 hci_conn_del(hcon);
4008 hci_dev_unlock(hdev);
4009 return;
4010 }
4011
4012 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
4013
4014 hcon->state = BT_CONNECTED;
4015 bacpy(&hcon->dst, &bredr_hcon->dst);
4016
4017 hci_conn_hold(hcon);
4018 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4019 hci_conn_drop(hcon);
4020
4021 hci_conn_add_sysfs(hcon);
4022
4023 amp_physical_cfm(bredr_hcon, hcon);
4024
4025 hci_dev_unlock(hdev);
4026 }
4027
4028 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4029 {
4030 struct hci_ev_logical_link_complete *ev = (void *) skb->data;
4031 struct hci_conn *hcon;
4032 struct hci_chan *hchan;
4033 struct amp_mgr *mgr;
4034
4035 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
4036 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
4037 ev->status);
4038
4039 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4040 if (!hcon)
4041 return;
4042
4043 /* Create AMP hchan */
4044 hchan = hci_chan_create(hcon);
4045 if (!hchan)
4046 return;
4047
4048 hchan->handle = le16_to_cpu(ev->handle);
4049
4050 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
4051
4052 mgr = hcon->amp_mgr;
4053 if (mgr && mgr->bredr_chan) {
4054 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
4055
4056 l2cap_chan_lock(bredr_chan);
4057
4058 bredr_chan->conn->mtu = hdev->block_mtu;
4059 l2cap_logical_cfm(bredr_chan, hchan, 0);
4060 hci_conn_hold(hcon);
4061
4062 l2cap_chan_unlock(bredr_chan);
4063 }
4064 }
4065
4066 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
4067 struct sk_buff *skb)
4068 {
4069 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
4070 struct hci_chan *hchan;
4071
4072 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
4073 le16_to_cpu(ev->handle), ev->status);
4074
4075 if (ev->status)
4076 return;
4077
4078 hci_dev_lock(hdev);
4079
4080 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
4081 if (!hchan)
4082 goto unlock;
4083
4084 amp_destroy_logical_link(hchan, ev->reason);
4085
4086 unlock:
4087 hci_dev_unlock(hdev);
4088 }
4089
4090 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
4091 struct sk_buff *skb)
4092 {
4093 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
4094 struct hci_conn *hcon;
4095
4096 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4097
4098 if (ev->status)
4099 return;
4100
4101 hci_dev_lock(hdev);
4102
4103 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4104 if (hcon) {
4105 hcon->state = BT_CLOSED;
4106 hci_conn_del(hcon);
4107 }
4108
4109 hci_dev_unlock(hdev);
4110 }
4111
4112 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
4113 {
4114 struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4115 struct hci_conn_params *params;
4116 struct hci_conn *conn;
4117 struct smp_irk *irk;
4118 u8 addr_type;
4119
4120 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4121
4122 hci_dev_lock(hdev);
4123
4124 /* All controllers implicitly stop advertising in the event of a
4125 * connection, so ensure that the state bit is cleared.
4126 */
4127 clear_bit(HCI_LE_ADV, &hdev->dev_flags);
4128
4129 conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
4130 if (!conn) {
4131 conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4132 if (!conn) {
4133 BT_ERR("No memory for new connection");
4134 goto unlock;
4135 }
4136
4137 conn->dst_type = ev->bdaddr_type;
4138
4139 /* If we didn't have a hci_conn object previously
4140 * but we're in master role this must be something
4141 * initiated using a white list. Since white list based
4142 * connections are not "first class citizens" we don't
4143 * have full tracking of them. Therefore, we go ahead
4144 * with a "best effort" approach of determining the
4145 * initiator address based on the HCI_PRIVACY flag.
4146 */
4147 if (conn->out) {
4148 conn->resp_addr_type = ev->bdaddr_type;
4149 bacpy(&conn->resp_addr, &ev->bdaddr);
4150 if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) {
4151 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
4152 bacpy(&conn->init_addr, &hdev->rpa);
4153 } else {
4154 hci_copy_identity_address(hdev,
4155 &conn->init_addr,
4156 &conn->init_addr_type);
4157 }
4158 }
4159 } else {
4160 cancel_delayed_work(&conn->le_conn_timeout);
4161 }
4162
4163 if (!conn->out) {
4164 /* Set the responder (our side) address type based on
4165 * the advertising address type.
4166 */
4167 conn->resp_addr_type = hdev->adv_addr_type;
4168 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
4169 bacpy(&conn->resp_addr, &hdev->random_addr);
4170 else
4171 bacpy(&conn->resp_addr, &hdev->bdaddr);
4172
4173 conn->init_addr_type = ev->bdaddr_type;
4174 bacpy(&conn->init_addr, &ev->bdaddr);
4175
4176 /* For incoming connections, set the default minimum
4177 * and maximum connection interval. They will be used
4178 * to check if the parameters are in range and if not
4179 * trigger the connection update procedure.
4180 */
4181 conn->le_conn_min_interval = hdev->le_conn_min_interval;
4182 conn->le_conn_max_interval = hdev->le_conn_max_interval;
4183 }
4184
4185 /* Lookup the identity address from the stored connection
4186 * address and address type.
4187 *
4188 * When establishing connections to an identity address, the
4189 * connection procedure will store the resolvable random
4190 * address first. Now if it can be converted back into the
4191 * identity address, start using the identity address from
4192 * now on.
4193 */
4194 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4195 if (irk) {
4196 bacpy(&conn->dst, &irk->bdaddr);
4197 conn->dst_type = irk->addr_type;
4198 }
4199
4200 if (ev->status) {
4201 hci_le_conn_failed(conn, ev->status);
4202 goto unlock;
4203 }
4204
4205 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
4206 addr_type = BDADDR_LE_PUBLIC;
4207 else
4208 addr_type = BDADDR_LE_RANDOM;
4209
4210 /* Drop the connection if the device is blocked */
4211 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
4212 hci_conn_drop(conn);
4213 goto unlock;
4214 }
4215
4216 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4217 mgmt_device_connected(hdev, &conn->dst, conn->type,
4218 conn->dst_type, 0, NULL, 0, NULL);
4219
4220 conn->sec_level = BT_SECURITY_LOW;
4221 conn->handle = __le16_to_cpu(ev->handle);
4222 conn->state = BT_CONNECTED;
4223
4224 conn->le_conn_interval = le16_to_cpu(ev->interval);
4225 conn->le_conn_latency = le16_to_cpu(ev->latency);
4226 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4227
4228 hci_conn_add_sysfs(conn);
4229
4230 hci_proto_connect_cfm(conn, ev->status);
4231
4232 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
4233 conn->dst_type);
4234 if (params) {
4235 list_del_init(&params->action);
4236 if (params->conn) {
4237 hci_conn_drop(params->conn);
4238 hci_conn_put(params->conn);
4239 params->conn = NULL;
4240 }
4241 }
4242
4243 unlock:
4244 hci_update_background_scan(hdev);
4245 hci_dev_unlock(hdev);
4246 }
4247
4248 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
4249 struct sk_buff *skb)
4250 {
4251 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
4252 struct hci_conn *conn;
4253
4254 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
4255
4256 if (ev->status)
4257 return;
4258
4259 hci_dev_lock(hdev);
4260
4261 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4262 if (conn) {
4263 conn->le_conn_interval = le16_to_cpu(ev->interval);
4264 conn->le_conn_latency = le16_to_cpu(ev->latency);
4265 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
4266 }
4267
4268 hci_dev_unlock(hdev);
4269 }
4270
4271 /* This function requires the caller holds hdev->lock */
4272 static void check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr,
4273 u8 addr_type, u8 adv_type)
4274 {
4275 struct hci_conn *conn;
4276 struct hci_conn_params *params;
4277
4278 /* If the event is not connectable don't proceed further */
4279 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4280 return;
4281
4282 /* Ignore if the device is blocked */
4283 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4284 return;
4285
4286 /* Most controller will fail if we try to create new connections
4287 * while we have an existing one in slave role.
4288 */
4289 if (hdev->conn_hash.le_num_slave > 0)
4290 return;
4291
4292 /* If we're not connectable only connect devices that we have in
4293 * our pend_le_conns list.
4294 */
4295 params = hci_pend_le_action_lookup(&hdev->pend_le_conns,
4296 addr, addr_type);
4297 if (!params)
4298 return;
4299
4300 switch (params->auto_connect) {
4301 case HCI_AUTO_CONN_DIRECT:
4302 /* Only devices advertising with ADV_DIRECT_IND are
4303 * triggering a connection attempt. This is allowing
4304 * incoming connections from slave devices.
4305 */
4306 if (adv_type != LE_ADV_DIRECT_IND)
4307 return;
4308 break;
4309 case HCI_AUTO_CONN_ALWAYS:
4310 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
4311 * are triggering a connection attempt. This means
4312 * that incoming connectioms from slave device are
4313 * accepted and also outgoing connections to slave
4314 * devices are established when found.
4315 */
4316 break;
4317 default:
4318 return;
4319 }
4320
4321 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4322 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER);
4323 if (!IS_ERR(conn)) {
4324 /* Store the pointer since we don't really have any
4325 * other owner of the object besides the params that
4326 * triggered it. This way we can abort the connection if
4327 * the parameters get removed and keep the reference
4328 * count consistent once the connection is established.
4329 */
4330 params->conn = hci_conn_get(conn);
4331 return;
4332 }
4333
4334 switch (PTR_ERR(conn)) {
4335 case -EBUSY:
4336 /* If hci_connect() returns -EBUSY it means there is already
4337 * an LE connection attempt going on. Since controllers don't
4338 * support more than one connection attempt at the time, we
4339 * don't consider this an error case.
4340 */
4341 break;
4342 default:
4343 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4344 }
4345 }
4346
4347 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4348 u8 bdaddr_type, s8 rssi, u8 *data, u8 len)
4349 {
4350 struct discovery_state *d = &hdev->discovery;
4351 struct smp_irk *irk;
4352 bool match;
4353 u32 flags;
4354
4355 /* Check if we need to convert to identity address */
4356 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
4357 if (irk) {
4358 bdaddr = &irk->bdaddr;
4359 bdaddr_type = irk->addr_type;
4360 }
4361
4362 /* Check if we have been requested to connect to this device */
4363 check_pending_le_conn(hdev, bdaddr, bdaddr_type, type);
4364
4365 /* Passive scanning shouldn't trigger any device found events,
4366 * except for devices marked as CONN_REPORT for which we do send
4367 * device found events.
4368 */
4369 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4370 if (type == LE_ADV_DIRECT_IND)
4371 return;
4372
4373 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
4374 bdaddr, bdaddr_type))
4375 return;
4376
4377 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
4378 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4379 else
4380 flags = 0;
4381 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4382 rssi, flags, data, len, NULL, 0);
4383 return;
4384 }
4385
4386 /* When receiving non-connectable or scannable undirected
4387 * advertising reports, this means that the remote device is
4388 * not connectable and then clearly indicate this in the
4389 * device found event.
4390 *
4391 * When receiving a scan response, then there is no way to
4392 * know if the remote device is connectable or not. However
4393 * since scan responses are merged with a previously seen
4394 * advertising report, the flags field from that report
4395 * will be used.
4396 *
4397 * In the really unlikely case that a controller get confused
4398 * and just sends a scan response event, then it is marked as
4399 * not connectable as well.
4400 */
4401 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
4402 type == LE_ADV_SCAN_RSP)
4403 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
4404 else
4405 flags = 0;
4406
4407 /* If there's nothing pending either store the data from this
4408 * event or send an immediate device found event if the data
4409 * should not be stored for later.
4410 */
4411 if (!has_pending_adv_report(hdev)) {
4412 /* If the report will trigger a SCAN_REQ store it for
4413 * later merging.
4414 */
4415 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4416 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4417 rssi, flags, data, len);
4418 return;
4419 }
4420
4421 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4422 rssi, flags, data, len, NULL, 0);
4423 return;
4424 }
4425
4426 /* Check if the pending report is for the same device as the new one */
4427 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
4428 bdaddr_type == d->last_adv_addr_type);
4429
4430 /* If the pending data doesn't match this report or this isn't a
4431 * scan response (e.g. we got a duplicate ADV_IND) then force
4432 * sending of the pending data.
4433 */
4434 if (type != LE_ADV_SCAN_RSP || !match) {
4435 /* Send out whatever is in the cache, but skip duplicates */
4436 if (!match)
4437 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4438 d->last_adv_addr_type, NULL,
4439 d->last_adv_rssi, d->last_adv_flags,
4440 d->last_adv_data,
4441 d->last_adv_data_len, NULL, 0);
4442
4443 /* If the new report will trigger a SCAN_REQ store it for
4444 * later merging.
4445 */
4446 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
4447 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4448 rssi, flags, data, len);
4449 return;
4450 }
4451
4452 /* The advertising reports cannot be merged, so clear
4453 * the pending report and send out a device found event.
4454 */
4455 clear_pending_adv_report(hdev);
4456 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4457 rssi, flags, data, len, NULL, 0);
4458 return;
4459 }
4460
4461 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
4462 * the new event is a SCAN_RSP. We can therefore proceed with
4463 * sending a merged device found event.
4464 */
4465 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4466 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4467 d->last_adv_data, d->last_adv_data_len, data, len);
4468 clear_pending_adv_report(hdev);
4469 }
4470
4471 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4472 {
4473 u8 num_reports = skb->data[0];
4474 void *ptr = &skb->data[1];
4475
4476 hci_dev_lock(hdev);
4477
4478 while (num_reports--) {
4479 struct hci_ev_le_advertising_info *ev = ptr;
4480 s8 rssi;
4481
4482 rssi = ev->data[ev->length];
4483 process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4484 ev->bdaddr_type, rssi, ev->data, ev->length);
4485
4486 ptr += sizeof(*ev) + ev->length + 1;
4487 }
4488
4489 hci_dev_unlock(hdev);
4490 }
4491
4492 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4493 {
4494 struct hci_ev_le_ltk_req *ev = (void *) skb->data;
4495 struct hci_cp_le_ltk_reply cp;
4496 struct hci_cp_le_ltk_neg_reply neg;
4497 struct hci_conn *conn;
4498 struct smp_ltk *ltk;
4499
4500 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
4501
4502 hci_dev_lock(hdev);
4503
4504 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4505 if (conn == NULL)
4506 goto not_found;
4507
4508 ltk = hci_find_ltk(hdev, ev->ediv, ev->rand, conn->role);
4509 if (ltk == NULL)
4510 goto not_found;
4511
4512 memcpy(cp.ltk, ltk->val, sizeof(ltk->val));
4513 cp.handle = cpu_to_le16(conn->handle);
4514
4515 conn->pending_sec_level = smp_ltk_sec_level(ltk);
4516
4517 conn->enc_key_size = ltk->enc_size;
4518
4519 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
4520
4521 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
4522 * temporary key used to encrypt a connection following
4523 * pairing. It is used during the Encrypted Session Setup to
4524 * distribute the keys. Later, security can be re-established
4525 * using a distributed LTK.
4526 */
4527 if (ltk->type == SMP_STK) {
4528 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
4529 list_del(&ltk->list);
4530 kfree(ltk);
4531 } else {
4532 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
4533 }
4534
4535 hci_dev_unlock(hdev);
4536
4537 return;
4538
4539 not_found:
4540 neg.handle = ev->handle;
4541 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
4542 hci_dev_unlock(hdev);
4543 }
4544
4545 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
4546 u8 reason)
4547 {
4548 struct hci_cp_le_conn_param_req_neg_reply cp;
4549
4550 cp.handle = cpu_to_le16(handle);
4551 cp.reason = reason;
4552
4553 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
4554 &cp);
4555 }
4556
4557 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
4558 struct sk_buff *skb)
4559 {
4560 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
4561 struct hci_cp_le_conn_param_req_reply cp;
4562 struct hci_conn *hcon;
4563 u16 handle, min, max, latency, timeout;
4564
4565 handle = le16_to_cpu(ev->handle);
4566 min = le16_to_cpu(ev->interval_min);
4567 max = le16_to_cpu(ev->interval_max);
4568 latency = le16_to_cpu(ev->latency);
4569 timeout = le16_to_cpu(ev->timeout);
4570
4571 hcon = hci_conn_hash_lookup_handle(hdev, handle);
4572 if (!hcon || hcon->state != BT_CONNECTED)
4573 return send_conn_param_neg_reply(hdev, handle,
4574 HCI_ERROR_UNKNOWN_CONN_ID);
4575
4576 if (hci_check_conn_params(min, max, latency, timeout))
4577 return send_conn_param_neg_reply(hdev, handle,
4578 HCI_ERROR_INVALID_LL_PARAMS);
4579
4580 if (hcon->role == HCI_ROLE_MASTER) {
4581 struct hci_conn_params *params;
4582 u8 store_hint;
4583
4584 hci_dev_lock(hdev);
4585
4586 params = hci_conn_params_lookup(hdev, &hcon->dst,
4587 hcon->dst_type);
4588 if (params) {
4589 params->conn_min_interval = min;
4590 params->conn_max_interval = max;
4591 params->conn_latency = latency;
4592 params->supervision_timeout = timeout;
4593 store_hint = 0x01;
4594 } else{
4595 store_hint = 0x00;
4596 }
4597
4598 hci_dev_unlock(hdev);
4599
4600 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
4601 store_hint, min, max, latency, timeout);
4602 }
4603
4604 cp.handle = ev->handle;
4605 cp.interval_min = ev->interval_min;
4606 cp.interval_max = ev->interval_max;
4607 cp.latency = ev->latency;
4608 cp.timeout = ev->timeout;
4609 cp.min_ce_len = 0;
4610 cp.max_ce_len = 0;
4611
4612 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
4613 }
4614
4615 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
4616 {
4617 struct hci_ev_le_meta *le_ev = (void *) skb->data;
4618
4619 skb_pull(skb, sizeof(*le_ev));
4620
4621 switch (le_ev->subevent) {
4622 case HCI_EV_LE_CONN_COMPLETE:
4623 hci_le_conn_complete_evt(hdev, skb);
4624 break;
4625
4626 case HCI_EV_LE_CONN_UPDATE_COMPLETE:
4627 hci_le_conn_update_complete_evt(hdev, skb);
4628 break;
4629
4630 case HCI_EV_LE_ADVERTISING_REPORT:
4631 hci_le_adv_report_evt(hdev, skb);
4632 break;
4633
4634 case HCI_EV_LE_LTK_REQ:
4635 hci_le_ltk_request_evt(hdev, skb);
4636 break;
4637
4638 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
4639 hci_le_remote_conn_param_req_evt(hdev, skb);
4640 break;
4641
4642 default:
4643 break;
4644 }
4645 }
4646
4647 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
4648 {
4649 struct hci_ev_channel_selected *ev = (void *) skb->data;
4650 struct hci_conn *hcon;
4651
4652 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);
4653
4654 skb_pull(skb, sizeof(*ev));
4655
4656 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
4657 if (!hcon)
4658 return;
4659
4660 amp_read_loc_assoc_final_data(hdev, hcon);
4661 }
4662
4663 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
4664 {
4665 struct hci_event_hdr *hdr = (void *) skb->data;
4666 __u8 event = hdr->evt;
4667
4668 hci_dev_lock(hdev);
4669
4670 /* Received events are (currently) only needed when a request is
4671 * ongoing so avoid unnecessary memory allocation.
4672 */
4673 if (hci_req_pending(hdev)) {
4674 kfree_skb(hdev->recv_evt);
4675 hdev->recv_evt = skb_clone(skb, GFP_KERNEL);
4676 }
4677
4678 hci_dev_unlock(hdev);
4679
4680 skb_pull(skb, HCI_EVENT_HDR_SIZE);
4681
4682 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) {
4683 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
4684 u16 opcode = __le16_to_cpu(cmd_hdr->opcode);
4685
4686 hci_req_cmd_complete(hdev, opcode, 0);
4687 }
4688
4689 switch (event) {
4690 case HCI_EV_INQUIRY_COMPLETE:
4691 hci_inquiry_complete_evt(hdev, skb);
4692 break;
4693
4694 case HCI_EV_INQUIRY_RESULT:
4695 hci_inquiry_result_evt(hdev, skb);
4696 break;
4697
4698 case HCI_EV_CONN_COMPLETE:
4699 hci_conn_complete_evt(hdev, skb);
4700 break;
4701
4702 case HCI_EV_CONN_REQUEST:
4703 hci_conn_request_evt(hdev, skb);
4704 break;
4705
4706 case HCI_EV_DISCONN_COMPLETE:
4707 hci_disconn_complete_evt(hdev, skb);
4708 break;
4709
4710 case HCI_EV_AUTH_COMPLETE:
4711 hci_auth_complete_evt(hdev, skb);
4712 break;
4713
4714 case HCI_EV_REMOTE_NAME:
4715 hci_remote_name_evt(hdev, skb);
4716 break;
4717
4718 case HCI_EV_ENCRYPT_CHANGE:
4719 hci_encrypt_change_evt(hdev, skb);
4720 break;
4721
4722 case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
4723 hci_change_link_key_complete_evt(hdev, skb);
4724 break;
4725
4726 case HCI_EV_REMOTE_FEATURES:
4727 hci_remote_features_evt(hdev, skb);
4728 break;
4729
4730 case HCI_EV_CMD_COMPLETE:
4731 hci_cmd_complete_evt(hdev, skb);
4732 break;
4733
4734 case HCI_EV_CMD_STATUS:
4735 hci_cmd_status_evt(hdev, skb);
4736 break;
4737
4738 case HCI_EV_ROLE_CHANGE:
4739 hci_role_change_evt(hdev, skb);
4740 break;
4741
4742 case HCI_EV_NUM_COMP_PKTS:
4743 hci_num_comp_pkts_evt(hdev, skb);
4744 break;
4745
4746 case HCI_EV_MODE_CHANGE:
4747 hci_mode_change_evt(hdev, skb);
4748 break;
4749
4750 case HCI_EV_PIN_CODE_REQ:
4751 hci_pin_code_request_evt(hdev, skb);
4752 break;
4753
4754 case HCI_EV_LINK_KEY_REQ:
4755 hci_link_key_request_evt(hdev, skb);
4756 break;
4757
4758 case HCI_EV_LINK_KEY_NOTIFY:
4759 hci_link_key_notify_evt(hdev, skb);
4760 break;
4761
4762 case HCI_EV_CLOCK_OFFSET:
4763 hci_clock_offset_evt(hdev, skb);
4764 break;
4765
4766 case HCI_EV_PKT_TYPE_CHANGE:
4767 hci_pkt_type_change_evt(hdev, skb);
4768 break;
4769
4770 case HCI_EV_PSCAN_REP_MODE:
4771 hci_pscan_rep_mode_evt(hdev, skb);
4772 break;
4773
4774 case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
4775 hci_inquiry_result_with_rssi_evt(hdev, skb);
4776 break;
4777
4778 case HCI_EV_REMOTE_EXT_FEATURES:
4779 hci_remote_ext_features_evt(hdev, skb);
4780 break;
4781
4782 case HCI_EV_SYNC_CONN_COMPLETE:
4783 hci_sync_conn_complete_evt(hdev, skb);
4784 break;
4785
4786 case HCI_EV_EXTENDED_INQUIRY_RESULT:
4787 hci_extended_inquiry_result_evt(hdev, skb);
4788 break;
4789
4790 case HCI_EV_KEY_REFRESH_COMPLETE:
4791 hci_key_refresh_complete_evt(hdev, skb);
4792 break;
4793
4794 case HCI_EV_IO_CAPA_REQUEST:
4795 hci_io_capa_request_evt(hdev, skb);
4796 break;
4797
4798 case HCI_EV_IO_CAPA_REPLY:
4799 hci_io_capa_reply_evt(hdev, skb);
4800 break;
4801
4802 case HCI_EV_USER_CONFIRM_REQUEST:
4803 hci_user_confirm_request_evt(hdev, skb);
4804 break;
4805
4806 case HCI_EV_USER_PASSKEY_REQUEST:
4807 hci_user_passkey_request_evt(hdev, skb);
4808 break;
4809
4810 case HCI_EV_USER_PASSKEY_NOTIFY:
4811 hci_user_passkey_notify_evt(hdev, skb);
4812 break;
4813
4814 case HCI_EV_KEYPRESS_NOTIFY:
4815 hci_keypress_notify_evt(hdev, skb);
4816 break;
4817
4818 case HCI_EV_SIMPLE_PAIR_COMPLETE:
4819 hci_simple_pair_complete_evt(hdev, skb);
4820 break;
4821
4822 case HCI_EV_REMOTE_HOST_FEATURES:
4823 hci_remote_host_features_evt(hdev, skb);
4824 break;
4825
4826 case HCI_EV_LE_META:
4827 hci_le_meta_evt(hdev, skb);
4828 break;
4829
4830 case HCI_EV_CHANNEL_SELECTED:
4831 hci_chan_selected_evt(hdev, skb);
4832 break;
4833
4834 case HCI_EV_REMOTE_OOB_DATA_REQUEST:
4835 hci_remote_oob_data_request_evt(hdev, skb);
4836 break;
4837
4838 case HCI_EV_PHY_LINK_COMPLETE:
4839 hci_phy_link_complete_evt(hdev, skb);
4840 break;
4841
4842 case HCI_EV_LOGICAL_LINK_COMPLETE:
4843 hci_loglink_complete_evt(hdev, skb);
4844 break;
4845
4846 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
4847 hci_disconn_loglink_complete_evt(hdev, skb);
4848 break;
4849
4850 case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
4851 hci_disconn_phylink_complete_evt(hdev, skb);
4852 break;
4853
4854 case HCI_EV_NUM_COMP_BLOCKS:
4855 hci_num_comp_blocks_evt(hdev, skb);
4856 break;
4857
4858 default:
4859 BT_DBG("%s event 0x%2.2x", hdev->name, event);
4860 break;
4861 }
4862
4863 kfree_skb(skb);
4864 hdev->stat.evt_rx++;
4865 }
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