1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /* Bluetooth HCI event handling. */
26
27 #include <asm/unaligned.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31 #include <net/bluetooth/mgmt.h>
32
33 #include "hci_request.h"
34 #include "hci_debugfs.h"
35 #include "a2mp.h"
36 #include "amp.h"
37 #include "smp.h"
38 #include "msft.h"
39 #include "eir.h"
40
41 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
42 "\x00\x00\x00\x00\x00\x00\x00\x00"
43
44 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
45
46 /* Handle HCI Event packets */
47
hci_ev_skb_pull(struct hci_dev * hdev,struct sk_buff * skb,u8 ev,size_t len)48 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
49 u8 ev, size_t len)
50 {
51 void *data;
52
53 data = skb_pull_data(skb, len);
54 if (!data)
55 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
56
57 return data;
58 }
59
hci_cc_skb_pull(struct hci_dev * hdev,struct sk_buff * skb,u16 op,size_t len)60 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
61 u16 op, size_t len)
62 {
63 void *data;
64
65 data = skb_pull_data(skb, len);
66 if (!data)
67 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
68
69 return data;
70 }
71
hci_le_ev_skb_pull(struct hci_dev * hdev,struct sk_buff * skb,u8 ev,size_t len)72 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
73 u8 ev, size_t len)
74 {
75 void *data;
76
77 data = skb_pull_data(skb, len);
78 if (!data)
79 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
80
81 return data;
82 }
83
hci_cc_inquiry_cancel(struct hci_dev * hdev,void * data,struct sk_buff * skb)84 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
85 struct sk_buff *skb)
86 {
87 struct hci_ev_status *rp = data;
88
89 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
90
91 /* It is possible that we receive Inquiry Complete event right
92 * before we receive Inquiry Cancel Command Complete event, in
93 * which case the latter event should have status of Command
94 * Disallowed (0x0c). This should not be treated as error, since
95 * we actually achieve what Inquiry Cancel wants to achieve,
96 * which is to end the last Inquiry session.
97 */
98 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
99 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
100 rp->status = 0x00;
101 }
102
103 if (rp->status)
104 return rp->status;
105
106 clear_bit(HCI_INQUIRY, &hdev->flags);
107 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
108 wake_up_bit(&hdev->flags, HCI_INQUIRY);
109
110 hci_dev_lock(hdev);
111 /* Set discovery state to stopped if we're not doing LE active
112 * scanning.
113 */
114 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
115 hdev->le_scan_type != LE_SCAN_ACTIVE)
116 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
117 hci_dev_unlock(hdev);
118
119 hci_conn_check_pending(hdev);
120
121 return rp->status;
122 }
123
hci_cc_periodic_inq(struct hci_dev * hdev,void * data,struct sk_buff * skb)124 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
125 struct sk_buff *skb)
126 {
127 struct hci_ev_status *rp = data;
128
129 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
130
131 if (rp->status)
132 return rp->status;
133
134 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
135
136 return rp->status;
137 }
138
hci_cc_exit_periodic_inq(struct hci_dev * hdev,void * data,struct sk_buff * skb)139 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
140 struct sk_buff *skb)
141 {
142 struct hci_ev_status *rp = data;
143
144 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
145
146 if (rp->status)
147 return rp->status;
148
149 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
150
151 hci_conn_check_pending(hdev);
152
153 return rp->status;
154 }
155
hci_cc_remote_name_req_cancel(struct hci_dev * hdev,void * data,struct sk_buff * skb)156 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
157 struct sk_buff *skb)
158 {
159 struct hci_ev_status *rp = data;
160
161 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
162
163 return rp->status;
164 }
165
hci_cc_role_discovery(struct hci_dev * hdev,void * data,struct sk_buff * skb)166 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
167 struct sk_buff *skb)
168 {
169 struct hci_rp_role_discovery *rp = data;
170 struct hci_conn *conn;
171
172 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
173
174 if (rp->status)
175 return rp->status;
176
177 hci_dev_lock(hdev);
178
179 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
180 if (conn)
181 conn->role = rp->role;
182
183 hci_dev_unlock(hdev);
184
185 return rp->status;
186 }
187
hci_cc_read_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)188 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
189 struct sk_buff *skb)
190 {
191 struct hci_rp_read_link_policy *rp = data;
192 struct hci_conn *conn;
193
194 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
195
196 if (rp->status)
197 return rp->status;
198
199 hci_dev_lock(hdev);
200
201 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
202 if (conn)
203 conn->link_policy = __le16_to_cpu(rp->policy);
204
205 hci_dev_unlock(hdev);
206
207 return rp->status;
208 }
209
hci_cc_write_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)210 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
211 struct sk_buff *skb)
212 {
213 struct hci_rp_write_link_policy *rp = data;
214 struct hci_conn *conn;
215 void *sent;
216
217 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
218
219 if (rp->status)
220 return rp->status;
221
222 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
223 if (!sent)
224 return rp->status;
225
226 hci_dev_lock(hdev);
227
228 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
229 if (conn)
230 conn->link_policy = get_unaligned_le16(sent + 2);
231
232 hci_dev_unlock(hdev);
233
234 return rp->status;
235 }
236
hci_cc_read_def_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)237 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
238 struct sk_buff *skb)
239 {
240 struct hci_rp_read_def_link_policy *rp = data;
241
242 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
243
244 if (rp->status)
245 return rp->status;
246
247 hdev->link_policy = __le16_to_cpu(rp->policy);
248
249 return rp->status;
250 }
251
hci_cc_write_def_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)252 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
253 struct sk_buff *skb)
254 {
255 struct hci_ev_status *rp = data;
256 void *sent;
257
258 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
259
260 if (rp->status)
261 return rp->status;
262
263 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
264 if (!sent)
265 return rp->status;
266
267 hdev->link_policy = get_unaligned_le16(sent);
268
269 return rp->status;
270 }
271
hci_cc_reset(struct hci_dev * hdev,void * data,struct sk_buff * skb)272 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
273 {
274 struct hci_ev_status *rp = data;
275
276 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
277
278 clear_bit(HCI_RESET, &hdev->flags);
279
280 if (rp->status)
281 return rp->status;
282
283 /* Reset all non-persistent flags */
284 hci_dev_clear_volatile_flags(hdev);
285
286 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
287
288 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
289 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
290
291 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
292 hdev->adv_data_len = 0;
293
294 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
295 hdev->scan_rsp_data_len = 0;
296
297 hdev->le_scan_type = LE_SCAN_PASSIVE;
298
299 hdev->ssp_debug_mode = 0;
300
301 hci_bdaddr_list_clear(&hdev->le_accept_list);
302 hci_bdaddr_list_clear(&hdev->le_resolv_list);
303
304 return rp->status;
305 }
306
hci_cc_read_stored_link_key(struct hci_dev * hdev,void * data,struct sk_buff * skb)307 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
308 struct sk_buff *skb)
309 {
310 struct hci_rp_read_stored_link_key *rp = data;
311 struct hci_cp_read_stored_link_key *sent;
312
313 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
314
315 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
316 if (!sent)
317 return rp->status;
318
319 if (!rp->status && sent->read_all == 0x01) {
320 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
321 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
322 }
323
324 return rp->status;
325 }
326
hci_cc_delete_stored_link_key(struct hci_dev * hdev,void * data,struct sk_buff * skb)327 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
328 struct sk_buff *skb)
329 {
330 struct hci_rp_delete_stored_link_key *rp = data;
331 u16 num_keys;
332
333 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
334
335 if (rp->status)
336 return rp->status;
337
338 num_keys = le16_to_cpu(rp->num_keys);
339
340 if (num_keys <= hdev->stored_num_keys)
341 hdev->stored_num_keys -= num_keys;
342 else
343 hdev->stored_num_keys = 0;
344
345 return rp->status;
346 }
347
hci_cc_write_local_name(struct hci_dev * hdev,void * data,struct sk_buff * skb)348 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
349 struct sk_buff *skb)
350 {
351 struct hci_ev_status *rp = data;
352 void *sent;
353
354 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
355
356 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
357 if (!sent)
358 return rp->status;
359
360 hci_dev_lock(hdev);
361
362 if (hci_dev_test_flag(hdev, HCI_MGMT))
363 mgmt_set_local_name_complete(hdev, sent, rp->status);
364 else if (!rp->status)
365 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
366
367 hci_dev_unlock(hdev);
368
369 return rp->status;
370 }
371
hci_cc_read_local_name(struct hci_dev * hdev,void * data,struct sk_buff * skb)372 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
373 struct sk_buff *skb)
374 {
375 struct hci_rp_read_local_name *rp = data;
376
377 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
378
379 if (rp->status)
380 return rp->status;
381
382 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
383 hci_dev_test_flag(hdev, HCI_CONFIG))
384 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
385
386 return rp->status;
387 }
388
hci_cc_write_auth_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)389 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
390 struct sk_buff *skb)
391 {
392 struct hci_ev_status *rp = data;
393 void *sent;
394
395 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
396
397 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
398 if (!sent)
399 return rp->status;
400
401 hci_dev_lock(hdev);
402
403 if (!rp->status) {
404 __u8 param = *((__u8 *) sent);
405
406 if (param == AUTH_ENABLED)
407 set_bit(HCI_AUTH, &hdev->flags);
408 else
409 clear_bit(HCI_AUTH, &hdev->flags);
410 }
411
412 if (hci_dev_test_flag(hdev, HCI_MGMT))
413 mgmt_auth_enable_complete(hdev, rp->status);
414
415 hci_dev_unlock(hdev);
416
417 return rp->status;
418 }
419
hci_cc_write_encrypt_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)420 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
421 struct sk_buff *skb)
422 {
423 struct hci_ev_status *rp = data;
424 __u8 param;
425 void *sent;
426
427 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
428
429 if (rp->status)
430 return rp->status;
431
432 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
433 if (!sent)
434 return rp->status;
435
436 param = *((__u8 *) sent);
437
438 if (param)
439 set_bit(HCI_ENCRYPT, &hdev->flags);
440 else
441 clear_bit(HCI_ENCRYPT, &hdev->flags);
442
443 return rp->status;
444 }
445
hci_cc_write_scan_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)446 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
447 struct sk_buff *skb)
448 {
449 struct hci_ev_status *rp = data;
450 __u8 param;
451 void *sent;
452
453 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
454
455 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
456 if (!sent)
457 return rp->status;
458
459 param = *((__u8 *) sent);
460
461 hci_dev_lock(hdev);
462
463 if (rp->status) {
464 hdev->discov_timeout = 0;
465 goto done;
466 }
467
468 if (param & SCAN_INQUIRY)
469 set_bit(HCI_ISCAN, &hdev->flags);
470 else
471 clear_bit(HCI_ISCAN, &hdev->flags);
472
473 if (param & SCAN_PAGE)
474 set_bit(HCI_PSCAN, &hdev->flags);
475 else
476 clear_bit(HCI_PSCAN, &hdev->flags);
477
478 done:
479 hci_dev_unlock(hdev);
480
481 return rp->status;
482 }
483
hci_cc_set_event_filter(struct hci_dev * hdev,void * data,struct sk_buff * skb)484 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
485 struct sk_buff *skb)
486 {
487 struct hci_ev_status *rp = data;
488 struct hci_cp_set_event_filter *cp;
489 void *sent;
490
491 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
492
493 if (rp->status)
494 return rp->status;
495
496 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
497 if (!sent)
498 return rp->status;
499
500 cp = (struct hci_cp_set_event_filter *)sent;
501
502 if (cp->flt_type == HCI_FLT_CLEAR_ALL)
503 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
504 else
505 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
506
507 return rp->status;
508 }
509
hci_cc_read_class_of_dev(struct hci_dev * hdev,void * data,struct sk_buff * skb)510 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
511 struct sk_buff *skb)
512 {
513 struct hci_rp_read_class_of_dev *rp = data;
514
515 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
516
517 if (rp->status)
518 return rp->status;
519
520 memcpy(hdev->dev_class, rp->dev_class, 3);
521
522 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
523 hdev->dev_class[1], hdev->dev_class[0]);
524
525 return rp->status;
526 }
527
hci_cc_write_class_of_dev(struct hci_dev * hdev,void * data,struct sk_buff * skb)528 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
529 struct sk_buff *skb)
530 {
531 struct hci_ev_status *rp = data;
532 void *sent;
533
534 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
535
536 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
537 if (!sent)
538 return rp->status;
539
540 hci_dev_lock(hdev);
541
542 if (!rp->status)
543 memcpy(hdev->dev_class, sent, 3);
544
545 if (hci_dev_test_flag(hdev, HCI_MGMT))
546 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
547
548 hci_dev_unlock(hdev);
549
550 return rp->status;
551 }
552
hci_cc_read_voice_setting(struct hci_dev * hdev,void * data,struct sk_buff * skb)553 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
554 struct sk_buff *skb)
555 {
556 struct hci_rp_read_voice_setting *rp = data;
557 __u16 setting;
558
559 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
560
561 if (rp->status)
562 return rp->status;
563
564 setting = __le16_to_cpu(rp->voice_setting);
565
566 if (hdev->voice_setting == setting)
567 return rp->status;
568
569 hdev->voice_setting = setting;
570
571 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
572
573 if (hdev->notify)
574 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
575
576 return rp->status;
577 }
578
hci_cc_write_voice_setting(struct hci_dev * hdev,void * data,struct sk_buff * skb)579 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
580 struct sk_buff *skb)
581 {
582 struct hci_ev_status *rp = data;
583 __u16 setting;
584 void *sent;
585
586 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
587
588 if (rp->status)
589 return rp->status;
590
591 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
592 if (!sent)
593 return rp->status;
594
595 setting = get_unaligned_le16(sent);
596
597 if (hdev->voice_setting == setting)
598 return rp->status;
599
600 hdev->voice_setting = setting;
601
602 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
603
604 if (hdev->notify)
605 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
606
607 return rp->status;
608 }
609
hci_cc_read_num_supported_iac(struct hci_dev * hdev,void * data,struct sk_buff * skb)610 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
611 struct sk_buff *skb)
612 {
613 struct hci_rp_read_num_supported_iac *rp = data;
614
615 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
616
617 if (rp->status)
618 return rp->status;
619
620 hdev->num_iac = rp->num_iac;
621
622 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
623
624 return rp->status;
625 }
626
hci_cc_write_ssp_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)627 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
628 struct sk_buff *skb)
629 {
630 struct hci_ev_status *rp = data;
631 struct hci_cp_write_ssp_mode *sent;
632
633 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
634
635 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
636 if (!sent)
637 return rp->status;
638
639 hci_dev_lock(hdev);
640
641 if (!rp->status) {
642 if (sent->mode)
643 hdev->features[1][0] |= LMP_HOST_SSP;
644 else
645 hdev->features[1][0] &= ~LMP_HOST_SSP;
646 }
647
648 if (!rp->status) {
649 if (sent->mode)
650 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
651 else
652 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
653 }
654
655 hci_dev_unlock(hdev);
656
657 return rp->status;
658 }
659
hci_cc_write_sc_support(struct hci_dev * hdev,void * data,struct sk_buff * skb)660 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
661 struct sk_buff *skb)
662 {
663 struct hci_ev_status *rp = data;
664 struct hci_cp_write_sc_support *sent;
665
666 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
667
668 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
669 if (!sent)
670 return rp->status;
671
672 hci_dev_lock(hdev);
673
674 if (!rp->status) {
675 if (sent->support)
676 hdev->features[1][0] |= LMP_HOST_SC;
677 else
678 hdev->features[1][0] &= ~LMP_HOST_SC;
679 }
680
681 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
682 if (sent->support)
683 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
684 else
685 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
686 }
687
688 hci_dev_unlock(hdev);
689
690 return rp->status;
691 }
692
hci_cc_read_local_version(struct hci_dev * hdev,void * data,struct sk_buff * skb)693 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
694 struct sk_buff *skb)
695 {
696 struct hci_rp_read_local_version *rp = data;
697
698 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
699
700 if (rp->status)
701 return rp->status;
702
703 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
704 hci_dev_test_flag(hdev, HCI_CONFIG)) {
705 hdev->hci_ver = rp->hci_ver;
706 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
707 hdev->lmp_ver = rp->lmp_ver;
708 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
709 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
710 }
711
712 return rp->status;
713 }
714
hci_cc_read_enc_key_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)715 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
716 struct sk_buff *skb)
717 {
718 struct hci_rp_read_enc_key_size *rp = data;
719 struct hci_conn *conn;
720 u16 handle;
721 u8 status = rp->status;
722
723 bt_dev_dbg(hdev, "status 0x%2.2x", status);
724
725 handle = le16_to_cpu(rp->handle);
726
727 hci_dev_lock(hdev);
728
729 conn = hci_conn_hash_lookup_handle(hdev, handle);
730 if (!conn) {
731 status = 0xFF;
732 goto done;
733 }
734
735 /* While unexpected, the read_enc_key_size command may fail. The most
736 * secure approach is to then assume the key size is 0 to force a
737 * disconnection.
738 */
739 if (status) {
740 bt_dev_err(hdev, "failed to read key size for handle %u",
741 handle);
742 conn->enc_key_size = 0;
743 } else {
744 conn->enc_key_size = rp->key_size;
745 status = 0;
746 }
747
748 hci_encrypt_cfm(conn, 0);
749
750 done:
751 hci_dev_unlock(hdev);
752
753 return status;
754 }
755
hci_cc_read_local_commands(struct hci_dev * hdev,void * data,struct sk_buff * skb)756 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
757 struct sk_buff *skb)
758 {
759 struct hci_rp_read_local_commands *rp = data;
760
761 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
762
763 if (rp->status)
764 return rp->status;
765
766 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
767 hci_dev_test_flag(hdev, HCI_CONFIG))
768 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
769
770 return rp->status;
771 }
772
hci_cc_read_auth_payload_timeout(struct hci_dev * hdev,void * data,struct sk_buff * skb)773 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
774 struct sk_buff *skb)
775 {
776 struct hci_rp_read_auth_payload_to *rp = data;
777 struct hci_conn *conn;
778
779 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
780
781 if (rp->status)
782 return rp->status;
783
784 hci_dev_lock(hdev);
785
786 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
787 if (conn)
788 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
789
790 hci_dev_unlock(hdev);
791
792 return rp->status;
793 }
794
hci_cc_write_auth_payload_timeout(struct hci_dev * hdev,void * data,struct sk_buff * skb)795 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
796 struct sk_buff *skb)
797 {
798 struct hci_rp_write_auth_payload_to *rp = data;
799 struct hci_conn *conn;
800 void *sent;
801
802 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
803
804 if (rp->status)
805 return rp->status;
806
807 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
808 if (!sent)
809 return rp->status;
810
811 hci_dev_lock(hdev);
812
813 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
814 if (conn)
815 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
816
817 hci_dev_unlock(hdev);
818
819 return rp->status;
820 }
821
hci_cc_read_local_features(struct hci_dev * hdev,void * data,struct sk_buff * skb)822 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
823 struct sk_buff *skb)
824 {
825 struct hci_rp_read_local_features *rp = data;
826
827 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
828
829 if (rp->status)
830 return rp->status;
831
832 memcpy(hdev->features, rp->features, 8);
833
834 /* Adjust default settings according to features
835 * supported by device. */
836
837 if (hdev->features[0][0] & LMP_3SLOT)
838 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
839
840 if (hdev->features[0][0] & LMP_5SLOT)
841 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
842
843 if (hdev->features[0][1] & LMP_HV2) {
844 hdev->pkt_type |= (HCI_HV2);
845 hdev->esco_type |= (ESCO_HV2);
846 }
847
848 if (hdev->features[0][1] & LMP_HV3) {
849 hdev->pkt_type |= (HCI_HV3);
850 hdev->esco_type |= (ESCO_HV3);
851 }
852
853 if (lmp_esco_capable(hdev))
854 hdev->esco_type |= (ESCO_EV3);
855
856 if (hdev->features[0][4] & LMP_EV4)
857 hdev->esco_type |= (ESCO_EV4);
858
859 if (hdev->features[0][4] & LMP_EV5)
860 hdev->esco_type |= (ESCO_EV5);
861
862 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
863 hdev->esco_type |= (ESCO_2EV3);
864
865 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
866 hdev->esco_type |= (ESCO_3EV3);
867
868 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
869 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
870
871 return rp->status;
872 }
873
hci_cc_read_local_ext_features(struct hci_dev * hdev,void * data,struct sk_buff * skb)874 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
875 struct sk_buff *skb)
876 {
877 struct hci_rp_read_local_ext_features *rp = data;
878
879 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
880
881 if (rp->status)
882 return rp->status;
883
884 if (hdev->max_page < rp->max_page)
885 hdev->max_page = rp->max_page;
886
887 if (rp->page < HCI_MAX_PAGES)
888 memcpy(hdev->features[rp->page], rp->features, 8);
889
890 return rp->status;
891 }
892
hci_cc_read_flow_control_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)893 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
894 struct sk_buff *skb)
895 {
896 struct hci_rp_read_flow_control_mode *rp = data;
897
898 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
899
900 if (rp->status)
901 return rp->status;
902
903 hdev->flow_ctl_mode = rp->mode;
904
905 return rp->status;
906 }
907
hci_cc_read_buffer_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)908 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
909 struct sk_buff *skb)
910 {
911 struct hci_rp_read_buffer_size *rp = data;
912
913 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
914
915 if (rp->status)
916 return rp->status;
917
918 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
919 hdev->sco_mtu = rp->sco_mtu;
920 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
921 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
922
923 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
924 hdev->sco_mtu = 64;
925 hdev->sco_pkts = 8;
926 }
927
928 hdev->acl_cnt = hdev->acl_pkts;
929 hdev->sco_cnt = hdev->sco_pkts;
930
931 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
932 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
933
934 return rp->status;
935 }
936
hci_cc_read_bd_addr(struct hci_dev * hdev,void * data,struct sk_buff * skb)937 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
938 struct sk_buff *skb)
939 {
940 struct hci_rp_read_bd_addr *rp = data;
941
942 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
943
944 if (rp->status)
945 return rp->status;
946
947 if (test_bit(HCI_INIT, &hdev->flags))
948 bacpy(&hdev->bdaddr, &rp->bdaddr);
949
950 if (hci_dev_test_flag(hdev, HCI_SETUP))
951 bacpy(&hdev->setup_addr, &rp->bdaddr);
952
953 return rp->status;
954 }
955
hci_cc_read_local_pairing_opts(struct hci_dev * hdev,void * data,struct sk_buff * skb)956 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
957 struct sk_buff *skb)
958 {
959 struct hci_rp_read_local_pairing_opts *rp = data;
960
961 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
962
963 if (rp->status)
964 return rp->status;
965
966 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
967 hci_dev_test_flag(hdev, HCI_CONFIG)) {
968 hdev->pairing_opts = rp->pairing_opts;
969 hdev->max_enc_key_size = rp->max_key_size;
970 }
971
972 return rp->status;
973 }
974
hci_cc_read_page_scan_activity(struct hci_dev * hdev,void * data,struct sk_buff * skb)975 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
976 struct sk_buff *skb)
977 {
978 struct hci_rp_read_page_scan_activity *rp = data;
979
980 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
981
982 if (rp->status)
983 return rp->status;
984
985 if (test_bit(HCI_INIT, &hdev->flags)) {
986 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
987 hdev->page_scan_window = __le16_to_cpu(rp->window);
988 }
989
990 return rp->status;
991 }
992
hci_cc_write_page_scan_activity(struct hci_dev * hdev,void * data,struct sk_buff * skb)993 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
994 struct sk_buff *skb)
995 {
996 struct hci_ev_status *rp = data;
997 struct hci_cp_write_page_scan_activity *sent;
998
999 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1000
1001 if (rp->status)
1002 return rp->status;
1003
1004 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1005 if (!sent)
1006 return rp->status;
1007
1008 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1009 hdev->page_scan_window = __le16_to_cpu(sent->window);
1010
1011 return rp->status;
1012 }
1013
hci_cc_read_page_scan_type(struct hci_dev * hdev,void * data,struct sk_buff * skb)1014 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1015 struct sk_buff *skb)
1016 {
1017 struct hci_rp_read_page_scan_type *rp = data;
1018
1019 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1020
1021 if (rp->status)
1022 return rp->status;
1023
1024 if (test_bit(HCI_INIT, &hdev->flags))
1025 hdev->page_scan_type = rp->type;
1026
1027 return rp->status;
1028 }
1029
hci_cc_write_page_scan_type(struct hci_dev * hdev,void * data,struct sk_buff * skb)1030 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1031 struct sk_buff *skb)
1032 {
1033 struct hci_ev_status *rp = data;
1034 u8 *type;
1035
1036 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1037
1038 if (rp->status)
1039 return rp->status;
1040
1041 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1042 if (type)
1043 hdev->page_scan_type = *type;
1044
1045 return rp->status;
1046 }
1047
hci_cc_read_data_block_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)1048 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1049 struct sk_buff *skb)
1050 {
1051 struct hci_rp_read_data_block_size *rp = data;
1052
1053 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1054
1055 if (rp->status)
1056 return rp->status;
1057
1058 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1059 hdev->block_len = __le16_to_cpu(rp->block_len);
1060 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1061
1062 hdev->block_cnt = hdev->num_blocks;
1063
1064 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1065 hdev->block_cnt, hdev->block_len);
1066
1067 return rp->status;
1068 }
1069
hci_cc_read_clock(struct hci_dev * hdev,void * data,struct sk_buff * skb)1070 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1071 struct sk_buff *skb)
1072 {
1073 struct hci_rp_read_clock *rp = data;
1074 struct hci_cp_read_clock *cp;
1075 struct hci_conn *conn;
1076
1077 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1078
1079 if (rp->status)
1080 return rp->status;
1081
1082 hci_dev_lock(hdev);
1083
1084 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1085 if (!cp)
1086 goto unlock;
1087
1088 if (cp->which == 0x00) {
1089 hdev->clock = le32_to_cpu(rp->clock);
1090 goto unlock;
1091 }
1092
1093 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1094 if (conn) {
1095 conn->clock = le32_to_cpu(rp->clock);
1096 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1097 }
1098
1099 unlock:
1100 hci_dev_unlock(hdev);
1101 return rp->status;
1102 }
1103
hci_cc_read_local_amp_info(struct hci_dev * hdev,void * data,struct sk_buff * skb)1104 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1105 struct sk_buff *skb)
1106 {
1107 struct hci_rp_read_local_amp_info *rp = data;
1108
1109 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1110
1111 if (rp->status)
1112 return rp->status;
1113
1114 hdev->amp_status = rp->amp_status;
1115 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1116 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1117 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1118 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1119 hdev->amp_type = rp->amp_type;
1120 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1121 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1122 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1123 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1124
1125 return rp->status;
1126 }
1127
hci_cc_read_inq_rsp_tx_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)1128 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1129 struct sk_buff *skb)
1130 {
1131 struct hci_rp_read_inq_rsp_tx_power *rp = data;
1132
1133 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1134
1135 if (rp->status)
1136 return rp->status;
1137
1138 hdev->inq_tx_power = rp->tx_power;
1139
1140 return rp->status;
1141 }
1142
hci_cc_read_def_err_data_reporting(struct hci_dev * hdev,void * data,struct sk_buff * skb)1143 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1144 struct sk_buff *skb)
1145 {
1146 struct hci_rp_read_def_err_data_reporting *rp = data;
1147
1148 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1149
1150 if (rp->status)
1151 return rp->status;
1152
1153 hdev->err_data_reporting = rp->err_data_reporting;
1154
1155 return rp->status;
1156 }
1157
hci_cc_write_def_err_data_reporting(struct hci_dev * hdev,void * data,struct sk_buff * skb)1158 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1159 struct sk_buff *skb)
1160 {
1161 struct hci_ev_status *rp = data;
1162 struct hci_cp_write_def_err_data_reporting *cp;
1163
1164 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1165
1166 if (rp->status)
1167 return rp->status;
1168
1169 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1170 if (!cp)
1171 return rp->status;
1172
1173 hdev->err_data_reporting = cp->err_data_reporting;
1174
1175 return rp->status;
1176 }
1177
hci_cc_pin_code_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1178 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1179 struct sk_buff *skb)
1180 {
1181 struct hci_rp_pin_code_reply *rp = data;
1182 struct hci_cp_pin_code_reply *cp;
1183 struct hci_conn *conn;
1184
1185 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1186
1187 hci_dev_lock(hdev);
1188
1189 if (hci_dev_test_flag(hdev, HCI_MGMT))
1190 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1191
1192 if (rp->status)
1193 goto unlock;
1194
1195 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1196 if (!cp)
1197 goto unlock;
1198
1199 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1200 if (conn)
1201 conn->pin_length = cp->pin_len;
1202
1203 unlock:
1204 hci_dev_unlock(hdev);
1205 return rp->status;
1206 }
1207
hci_cc_pin_code_neg_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1208 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1209 struct sk_buff *skb)
1210 {
1211 struct hci_rp_pin_code_neg_reply *rp = data;
1212
1213 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1214
1215 hci_dev_lock(hdev);
1216
1217 if (hci_dev_test_flag(hdev, HCI_MGMT))
1218 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1219 rp->status);
1220
1221 hci_dev_unlock(hdev);
1222
1223 return rp->status;
1224 }
1225
hci_cc_le_read_buffer_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)1226 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1227 struct sk_buff *skb)
1228 {
1229 struct hci_rp_le_read_buffer_size *rp = data;
1230
1231 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1232
1233 if (rp->status)
1234 return rp->status;
1235
1236 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1237 hdev->le_pkts = rp->le_max_pkt;
1238
1239 hdev->le_cnt = hdev->le_pkts;
1240
1241 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1242
1243 return rp->status;
1244 }
1245
hci_cc_le_read_local_features(struct hci_dev * hdev,void * data,struct sk_buff * skb)1246 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1247 struct sk_buff *skb)
1248 {
1249 struct hci_rp_le_read_local_features *rp = data;
1250
1251 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1252
1253 if (rp->status)
1254 return rp->status;
1255
1256 memcpy(hdev->le_features, rp->features, 8);
1257
1258 return rp->status;
1259 }
1260
hci_cc_le_read_adv_tx_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)1261 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1262 struct sk_buff *skb)
1263 {
1264 struct hci_rp_le_read_adv_tx_power *rp = data;
1265
1266 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1267
1268 if (rp->status)
1269 return rp->status;
1270
1271 hdev->adv_tx_power = rp->tx_power;
1272
1273 return rp->status;
1274 }
1275
hci_cc_user_confirm_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1276 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1277 struct sk_buff *skb)
1278 {
1279 struct hci_rp_user_confirm_reply *rp = data;
1280
1281 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1282
1283 hci_dev_lock(hdev);
1284
1285 if (hci_dev_test_flag(hdev, HCI_MGMT))
1286 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1287 rp->status);
1288
1289 hci_dev_unlock(hdev);
1290
1291 return rp->status;
1292 }
1293
hci_cc_user_confirm_neg_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1294 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1295 struct sk_buff *skb)
1296 {
1297 struct hci_rp_user_confirm_reply *rp = data;
1298
1299 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1300
1301 hci_dev_lock(hdev);
1302
1303 if (hci_dev_test_flag(hdev, HCI_MGMT))
1304 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1305 ACL_LINK, 0, rp->status);
1306
1307 hci_dev_unlock(hdev);
1308
1309 return rp->status;
1310 }
1311
hci_cc_user_passkey_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1312 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1313 struct sk_buff *skb)
1314 {
1315 struct hci_rp_user_confirm_reply *rp = data;
1316
1317 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1318
1319 hci_dev_lock(hdev);
1320
1321 if (hci_dev_test_flag(hdev, HCI_MGMT))
1322 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1323 0, rp->status);
1324
1325 hci_dev_unlock(hdev);
1326
1327 return rp->status;
1328 }
1329
hci_cc_user_passkey_neg_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1330 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1331 struct sk_buff *skb)
1332 {
1333 struct hci_rp_user_confirm_reply *rp = data;
1334
1335 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1336
1337 hci_dev_lock(hdev);
1338
1339 if (hci_dev_test_flag(hdev, HCI_MGMT))
1340 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1341 ACL_LINK, 0, rp->status);
1342
1343 hci_dev_unlock(hdev);
1344
1345 return rp->status;
1346 }
1347
hci_cc_read_local_oob_data(struct hci_dev * hdev,void * data,struct sk_buff * skb)1348 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1349 struct sk_buff *skb)
1350 {
1351 struct hci_rp_read_local_oob_data *rp = data;
1352
1353 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1354
1355 return rp->status;
1356 }
1357
hci_cc_read_local_oob_ext_data(struct hci_dev * hdev,void * data,struct sk_buff * skb)1358 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1359 struct sk_buff *skb)
1360 {
1361 struct hci_rp_read_local_oob_ext_data *rp = data;
1362
1363 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1364
1365 return rp->status;
1366 }
1367
hci_cc_le_set_random_addr(struct hci_dev * hdev,void * data,struct sk_buff * skb)1368 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1369 struct sk_buff *skb)
1370 {
1371 struct hci_ev_status *rp = data;
1372 bdaddr_t *sent;
1373
1374 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1375
1376 if (rp->status)
1377 return rp->status;
1378
1379 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1380 if (!sent)
1381 return rp->status;
1382
1383 hci_dev_lock(hdev);
1384
1385 bacpy(&hdev->random_addr, sent);
1386
1387 if (!bacmp(&hdev->rpa, sent)) {
1388 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1389 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1390 secs_to_jiffies(hdev->rpa_timeout));
1391 }
1392
1393 hci_dev_unlock(hdev);
1394
1395 return rp->status;
1396 }
1397
hci_cc_le_set_default_phy(struct hci_dev * hdev,void * data,struct sk_buff * skb)1398 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1399 struct sk_buff *skb)
1400 {
1401 struct hci_ev_status *rp = data;
1402 struct hci_cp_le_set_default_phy *cp;
1403
1404 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1405
1406 if (rp->status)
1407 return rp->status;
1408
1409 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1410 if (!cp)
1411 return rp->status;
1412
1413 hci_dev_lock(hdev);
1414
1415 hdev->le_tx_def_phys = cp->tx_phys;
1416 hdev->le_rx_def_phys = cp->rx_phys;
1417
1418 hci_dev_unlock(hdev);
1419
1420 return rp->status;
1421 }
1422
hci_cc_le_set_adv_set_random_addr(struct hci_dev * hdev,void * data,struct sk_buff * skb)1423 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1424 struct sk_buff *skb)
1425 {
1426 struct hci_ev_status *rp = data;
1427 struct hci_cp_le_set_adv_set_rand_addr *cp;
1428 struct adv_info *adv;
1429
1430 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1431
1432 if (rp->status)
1433 return rp->status;
1434
1435 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1436 /* Update only in case the adv instance since handle 0x00 shall be using
1437 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1438 * non-extended adverting.
1439 */
1440 if (!cp || !cp->handle)
1441 return rp->status;
1442
1443 hci_dev_lock(hdev);
1444
1445 adv = hci_find_adv_instance(hdev, cp->handle);
1446 if (adv) {
1447 bacpy(&adv->random_addr, &cp->bdaddr);
1448 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1449 adv->rpa_expired = false;
1450 queue_delayed_work(hdev->workqueue,
1451 &adv->rpa_expired_cb,
1452 secs_to_jiffies(hdev->rpa_timeout));
1453 }
1454 }
1455
1456 hci_dev_unlock(hdev);
1457
1458 return rp->status;
1459 }
1460
hci_cc_le_remove_adv_set(struct hci_dev * hdev,void * data,struct sk_buff * skb)1461 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1462 struct sk_buff *skb)
1463 {
1464 struct hci_ev_status *rp = data;
1465 u8 *instance;
1466 int err;
1467
1468 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1469
1470 if (rp->status)
1471 return rp->status;
1472
1473 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1474 if (!instance)
1475 return rp->status;
1476
1477 hci_dev_lock(hdev);
1478
1479 err = hci_remove_adv_instance(hdev, *instance);
1480 if (!err)
1481 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1482 *instance);
1483
1484 hci_dev_unlock(hdev);
1485
1486 return rp->status;
1487 }
1488
hci_cc_le_clear_adv_sets(struct hci_dev * hdev,void * data,struct sk_buff * skb)1489 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1490 struct sk_buff *skb)
1491 {
1492 struct hci_ev_status *rp = data;
1493 struct adv_info *adv, *n;
1494 int err;
1495
1496 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1497
1498 if (rp->status)
1499 return rp->status;
1500
1501 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1502 return rp->status;
1503
1504 hci_dev_lock(hdev);
1505
1506 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1507 u8 instance = adv->instance;
1508
1509 err = hci_remove_adv_instance(hdev, instance);
1510 if (!err)
1511 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1512 hdev, instance);
1513 }
1514
1515 hci_dev_unlock(hdev);
1516
1517 return rp->status;
1518 }
1519
hci_cc_le_read_transmit_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)1520 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1521 struct sk_buff *skb)
1522 {
1523 struct hci_rp_le_read_transmit_power *rp = data;
1524
1525 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1526
1527 if (rp->status)
1528 return rp->status;
1529
1530 hdev->min_le_tx_power = rp->min_le_tx_power;
1531 hdev->max_le_tx_power = rp->max_le_tx_power;
1532
1533 return rp->status;
1534 }
1535
hci_cc_le_set_privacy_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)1536 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1537 struct sk_buff *skb)
1538 {
1539 struct hci_ev_status *rp = data;
1540 struct hci_cp_le_set_privacy_mode *cp;
1541 struct hci_conn_params *params;
1542
1543 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1544
1545 if (rp->status)
1546 return rp->status;
1547
1548 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1549 if (!cp)
1550 return rp->status;
1551
1552 hci_dev_lock(hdev);
1553
1554 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1555 if (params)
1556 params->privacy_mode = cp->mode;
1557
1558 hci_dev_unlock(hdev);
1559
1560 return rp->status;
1561 }
1562
hci_cc_le_set_adv_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1563 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1564 struct sk_buff *skb)
1565 {
1566 struct hci_ev_status *rp = data;
1567 __u8 *sent;
1568
1569 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1570
1571 if (rp->status)
1572 return rp->status;
1573
1574 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1575 if (!sent)
1576 return rp->status;
1577
1578 hci_dev_lock(hdev);
1579
1580 /* If we're doing connection initiation as peripheral. Set a
1581 * timeout in case something goes wrong.
1582 */
1583 if (*sent) {
1584 struct hci_conn *conn;
1585
1586 hci_dev_set_flag(hdev, HCI_LE_ADV);
1587
1588 conn = hci_lookup_le_connect(hdev);
1589 if (conn)
1590 queue_delayed_work(hdev->workqueue,
1591 &conn->le_conn_timeout,
1592 conn->conn_timeout);
1593 } else {
1594 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1595 }
1596
1597 hci_dev_unlock(hdev);
1598
1599 return rp->status;
1600 }
1601
hci_cc_le_set_ext_adv_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1602 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1603 struct sk_buff *skb)
1604 {
1605 struct hci_cp_le_set_ext_adv_enable *cp;
1606 struct hci_cp_ext_adv_set *set;
1607 struct adv_info *adv = NULL, *n;
1608 struct hci_ev_status *rp = data;
1609
1610 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1611
1612 if (rp->status)
1613 return rp->status;
1614
1615 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1616 if (!cp)
1617 return rp->status;
1618
1619 set = (void *)cp->data;
1620
1621 hci_dev_lock(hdev);
1622
1623 if (cp->num_of_sets)
1624 adv = hci_find_adv_instance(hdev, set->handle);
1625
1626 if (cp->enable) {
1627 struct hci_conn *conn;
1628
1629 hci_dev_set_flag(hdev, HCI_LE_ADV);
1630
1631 if (adv)
1632 adv->enabled = true;
1633
1634 conn = hci_lookup_le_connect(hdev);
1635 if (conn)
1636 queue_delayed_work(hdev->workqueue,
1637 &conn->le_conn_timeout,
1638 conn->conn_timeout);
1639 } else {
1640 if (cp->num_of_sets) {
1641 if (adv)
1642 adv->enabled = false;
1643
1644 /* If just one instance was disabled check if there are
1645 * any other instance enabled before clearing HCI_LE_ADV
1646 */
1647 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1648 list) {
1649 if (adv->enabled)
1650 goto unlock;
1651 }
1652 } else {
1653 /* All instances shall be considered disabled */
1654 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1655 list)
1656 adv->enabled = false;
1657 }
1658
1659 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1660 }
1661
1662 unlock:
1663 hci_dev_unlock(hdev);
1664 return rp->status;
1665 }
1666
hci_cc_le_set_scan_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)1667 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1668 struct sk_buff *skb)
1669 {
1670 struct hci_cp_le_set_scan_param *cp;
1671 struct hci_ev_status *rp = data;
1672
1673 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1674
1675 if (rp->status)
1676 return rp->status;
1677
1678 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1679 if (!cp)
1680 return rp->status;
1681
1682 hci_dev_lock(hdev);
1683
1684 hdev->le_scan_type = cp->type;
1685
1686 hci_dev_unlock(hdev);
1687
1688 return rp->status;
1689 }
1690
hci_cc_le_set_ext_scan_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)1691 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1692 struct sk_buff *skb)
1693 {
1694 struct hci_cp_le_set_ext_scan_params *cp;
1695 struct hci_ev_status *rp = data;
1696 struct hci_cp_le_scan_phy_params *phy_param;
1697
1698 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1699
1700 if (rp->status)
1701 return rp->status;
1702
1703 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1704 if (!cp)
1705 return rp->status;
1706
1707 phy_param = (void *)cp->data;
1708
1709 hci_dev_lock(hdev);
1710
1711 hdev->le_scan_type = phy_param->type;
1712
1713 hci_dev_unlock(hdev);
1714
1715 return rp->status;
1716 }
1717
has_pending_adv_report(struct hci_dev * hdev)1718 static bool has_pending_adv_report(struct hci_dev *hdev)
1719 {
1720 struct discovery_state *d = &hdev->discovery;
1721
1722 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1723 }
1724
clear_pending_adv_report(struct hci_dev * hdev)1725 static void clear_pending_adv_report(struct hci_dev *hdev)
1726 {
1727 struct discovery_state *d = &hdev->discovery;
1728
1729 bacpy(&d->last_adv_addr, BDADDR_ANY);
1730 d->last_adv_data_len = 0;
1731 }
1732
store_pending_adv_report(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 bdaddr_type,s8 rssi,u32 flags,u8 * data,u8 len)1733 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1734 u8 bdaddr_type, s8 rssi, u32 flags,
1735 u8 *data, u8 len)
1736 {
1737 struct discovery_state *d = &hdev->discovery;
1738
1739 if (len > HCI_MAX_AD_LENGTH)
1740 return;
1741
1742 bacpy(&d->last_adv_addr, bdaddr);
1743 d->last_adv_addr_type = bdaddr_type;
1744 d->last_adv_rssi = rssi;
1745 d->last_adv_flags = flags;
1746 memcpy(d->last_adv_data, data, len);
1747 d->last_adv_data_len = len;
1748 }
1749
le_set_scan_enable_complete(struct hci_dev * hdev,u8 enable)1750 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1751 {
1752 hci_dev_lock(hdev);
1753
1754 switch (enable) {
1755 case LE_SCAN_ENABLE:
1756 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1757 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1758 clear_pending_adv_report(hdev);
1759 if (hci_dev_test_flag(hdev, HCI_MESH))
1760 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1761 break;
1762
1763 case LE_SCAN_DISABLE:
1764 /* We do this here instead of when setting DISCOVERY_STOPPED
1765 * since the latter would potentially require waiting for
1766 * inquiry to stop too.
1767 */
1768 if (has_pending_adv_report(hdev)) {
1769 struct discovery_state *d = &hdev->discovery;
1770
1771 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1772 d->last_adv_addr_type, NULL,
1773 d->last_adv_rssi, d->last_adv_flags,
1774 d->last_adv_data,
1775 d->last_adv_data_len, NULL, 0, 0);
1776 }
1777
1778 /* Cancel this timer so that we don't try to disable scanning
1779 * when it's already disabled.
1780 */
1781 cancel_delayed_work(&hdev->le_scan_disable);
1782
1783 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1784
1785 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1786 * interrupted scanning due to a connect request. Mark
1787 * therefore discovery as stopped.
1788 */
1789 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1790 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1791 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1792 hdev->discovery.state == DISCOVERY_FINDING)
1793 queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1794
1795 break;
1796
1797 default:
1798 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1799 enable);
1800 break;
1801 }
1802
1803 hci_dev_unlock(hdev);
1804 }
1805
hci_cc_le_set_scan_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1806 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1807 struct sk_buff *skb)
1808 {
1809 struct hci_cp_le_set_scan_enable *cp;
1810 struct hci_ev_status *rp = data;
1811
1812 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1813
1814 if (rp->status)
1815 return rp->status;
1816
1817 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1818 if (!cp)
1819 return rp->status;
1820
1821 le_set_scan_enable_complete(hdev, cp->enable);
1822
1823 return rp->status;
1824 }
1825
hci_cc_le_set_ext_scan_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1826 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1827 struct sk_buff *skb)
1828 {
1829 struct hci_cp_le_set_ext_scan_enable *cp;
1830 struct hci_ev_status *rp = data;
1831
1832 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1833
1834 if (rp->status)
1835 return rp->status;
1836
1837 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1838 if (!cp)
1839 return rp->status;
1840
1841 le_set_scan_enable_complete(hdev, cp->enable);
1842
1843 return rp->status;
1844 }
1845
hci_cc_le_read_num_adv_sets(struct hci_dev * hdev,void * data,struct sk_buff * skb)1846 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1847 struct sk_buff *skb)
1848 {
1849 struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1850
1851 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1852 rp->num_of_sets);
1853
1854 if (rp->status)
1855 return rp->status;
1856
1857 hdev->le_num_of_adv_sets = rp->num_of_sets;
1858
1859 return rp->status;
1860 }
1861
hci_cc_le_read_accept_list_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)1862 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1863 struct sk_buff *skb)
1864 {
1865 struct hci_rp_le_read_accept_list_size *rp = data;
1866
1867 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1868
1869 if (rp->status)
1870 return rp->status;
1871
1872 hdev->le_accept_list_size = rp->size;
1873
1874 return rp->status;
1875 }
1876
hci_cc_le_clear_accept_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1877 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1878 struct sk_buff *skb)
1879 {
1880 struct hci_ev_status *rp = data;
1881
1882 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1883
1884 if (rp->status)
1885 return rp->status;
1886
1887 hci_dev_lock(hdev);
1888 hci_bdaddr_list_clear(&hdev->le_accept_list);
1889 hci_dev_unlock(hdev);
1890
1891 return rp->status;
1892 }
1893
hci_cc_le_add_to_accept_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1894 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1895 struct sk_buff *skb)
1896 {
1897 struct hci_cp_le_add_to_accept_list *sent;
1898 struct hci_ev_status *rp = data;
1899
1900 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1901
1902 if (rp->status)
1903 return rp->status;
1904
1905 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1906 if (!sent)
1907 return rp->status;
1908
1909 hci_dev_lock(hdev);
1910 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1911 sent->bdaddr_type);
1912 hci_dev_unlock(hdev);
1913
1914 return rp->status;
1915 }
1916
hci_cc_le_del_from_accept_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1917 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1918 struct sk_buff *skb)
1919 {
1920 struct hci_cp_le_del_from_accept_list *sent;
1921 struct hci_ev_status *rp = data;
1922
1923 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1924
1925 if (rp->status)
1926 return rp->status;
1927
1928 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1929 if (!sent)
1930 return rp->status;
1931
1932 hci_dev_lock(hdev);
1933 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1934 sent->bdaddr_type);
1935 hci_dev_unlock(hdev);
1936
1937 return rp->status;
1938 }
1939
hci_cc_le_read_supported_states(struct hci_dev * hdev,void * data,struct sk_buff * skb)1940 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1941 struct sk_buff *skb)
1942 {
1943 struct hci_rp_le_read_supported_states *rp = data;
1944
1945 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1946
1947 if (rp->status)
1948 return rp->status;
1949
1950 memcpy(hdev->le_states, rp->le_states, 8);
1951
1952 return rp->status;
1953 }
1954
hci_cc_le_read_def_data_len(struct hci_dev * hdev,void * data,struct sk_buff * skb)1955 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1956 struct sk_buff *skb)
1957 {
1958 struct hci_rp_le_read_def_data_len *rp = data;
1959
1960 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1961
1962 if (rp->status)
1963 return rp->status;
1964
1965 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1966 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1967
1968 return rp->status;
1969 }
1970
hci_cc_le_write_def_data_len(struct hci_dev * hdev,void * data,struct sk_buff * skb)1971 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1972 struct sk_buff *skb)
1973 {
1974 struct hci_cp_le_write_def_data_len *sent;
1975 struct hci_ev_status *rp = data;
1976
1977 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1978
1979 if (rp->status)
1980 return rp->status;
1981
1982 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1983 if (!sent)
1984 return rp->status;
1985
1986 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1987 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1988
1989 return rp->status;
1990 }
1991
hci_cc_le_add_to_resolv_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1992 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
1993 struct sk_buff *skb)
1994 {
1995 struct hci_cp_le_add_to_resolv_list *sent;
1996 struct hci_ev_status *rp = data;
1997
1998 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1999
2000 if (rp->status)
2001 return rp->status;
2002
2003 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2004 if (!sent)
2005 return rp->status;
2006
2007 hci_dev_lock(hdev);
2008 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2009 sent->bdaddr_type, sent->peer_irk,
2010 sent->local_irk);
2011 hci_dev_unlock(hdev);
2012
2013 return rp->status;
2014 }
2015
hci_cc_le_del_from_resolv_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)2016 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2017 struct sk_buff *skb)
2018 {
2019 struct hci_cp_le_del_from_resolv_list *sent;
2020 struct hci_ev_status *rp = data;
2021
2022 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2023
2024 if (rp->status)
2025 return rp->status;
2026
2027 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2028 if (!sent)
2029 return rp->status;
2030
2031 hci_dev_lock(hdev);
2032 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2033 sent->bdaddr_type);
2034 hci_dev_unlock(hdev);
2035
2036 return rp->status;
2037 }
2038
hci_cc_le_clear_resolv_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)2039 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2040 struct sk_buff *skb)
2041 {
2042 struct hci_ev_status *rp = data;
2043
2044 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2045
2046 if (rp->status)
2047 return rp->status;
2048
2049 hci_dev_lock(hdev);
2050 hci_bdaddr_list_clear(&hdev->le_resolv_list);
2051 hci_dev_unlock(hdev);
2052
2053 return rp->status;
2054 }
2055
hci_cc_le_read_resolv_list_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)2056 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2057 struct sk_buff *skb)
2058 {
2059 struct hci_rp_le_read_resolv_list_size *rp = data;
2060
2061 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2062
2063 if (rp->status)
2064 return rp->status;
2065
2066 hdev->le_resolv_list_size = rp->size;
2067
2068 return rp->status;
2069 }
2070
hci_cc_le_set_addr_resolution_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)2071 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2072 struct sk_buff *skb)
2073 {
2074 struct hci_ev_status *rp = data;
2075 __u8 *sent;
2076
2077 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2078
2079 if (rp->status)
2080 return rp->status;
2081
2082 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2083 if (!sent)
2084 return rp->status;
2085
2086 hci_dev_lock(hdev);
2087
2088 if (*sent)
2089 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2090 else
2091 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2092
2093 hci_dev_unlock(hdev);
2094
2095 return rp->status;
2096 }
2097
hci_cc_le_read_max_data_len(struct hci_dev * hdev,void * data,struct sk_buff * skb)2098 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2099 struct sk_buff *skb)
2100 {
2101 struct hci_rp_le_read_max_data_len *rp = data;
2102
2103 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2104
2105 if (rp->status)
2106 return rp->status;
2107
2108 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2109 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2110 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2111 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2112
2113 return rp->status;
2114 }
2115
hci_cc_write_le_host_supported(struct hci_dev * hdev,void * data,struct sk_buff * skb)2116 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2117 struct sk_buff *skb)
2118 {
2119 struct hci_cp_write_le_host_supported *sent;
2120 struct hci_ev_status *rp = data;
2121
2122 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2123
2124 if (rp->status)
2125 return rp->status;
2126
2127 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2128 if (!sent)
2129 return rp->status;
2130
2131 hci_dev_lock(hdev);
2132
2133 if (sent->le) {
2134 hdev->features[1][0] |= LMP_HOST_LE;
2135 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2136 } else {
2137 hdev->features[1][0] &= ~LMP_HOST_LE;
2138 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2139 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2140 }
2141
2142 if (sent->simul)
2143 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2144 else
2145 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2146
2147 hci_dev_unlock(hdev);
2148
2149 return rp->status;
2150 }
2151
hci_cc_set_adv_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)2152 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2153 struct sk_buff *skb)
2154 {
2155 struct hci_cp_le_set_adv_param *cp;
2156 struct hci_ev_status *rp = data;
2157
2158 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2159
2160 if (rp->status)
2161 return rp->status;
2162
2163 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2164 if (!cp)
2165 return rp->status;
2166
2167 hci_dev_lock(hdev);
2168 hdev->adv_addr_type = cp->own_address_type;
2169 hci_dev_unlock(hdev);
2170
2171 return rp->status;
2172 }
2173
hci_cc_set_ext_adv_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)2174 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2175 struct sk_buff *skb)
2176 {
2177 struct hci_rp_le_set_ext_adv_params *rp = data;
2178 struct hci_cp_le_set_ext_adv_params *cp;
2179 struct adv_info *adv_instance;
2180
2181 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2182
2183 if (rp->status)
2184 return rp->status;
2185
2186 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2187 if (!cp)
2188 return rp->status;
2189
2190 hci_dev_lock(hdev);
2191 hdev->adv_addr_type = cp->own_addr_type;
2192 if (!cp->handle) {
2193 /* Store in hdev for instance 0 */
2194 hdev->adv_tx_power = rp->tx_power;
2195 } else {
2196 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2197 if (adv_instance)
2198 adv_instance->tx_power = rp->tx_power;
2199 }
2200 /* Update adv data as tx power is known now */
2201 hci_update_adv_data(hdev, cp->handle);
2202
2203 hci_dev_unlock(hdev);
2204
2205 return rp->status;
2206 }
2207
hci_cc_read_rssi(struct hci_dev * hdev,void * data,struct sk_buff * skb)2208 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2209 struct sk_buff *skb)
2210 {
2211 struct hci_rp_read_rssi *rp = data;
2212 struct hci_conn *conn;
2213
2214 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2215
2216 if (rp->status)
2217 return rp->status;
2218
2219 hci_dev_lock(hdev);
2220
2221 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2222 if (conn)
2223 conn->rssi = rp->rssi;
2224
2225 hci_dev_unlock(hdev);
2226
2227 return rp->status;
2228 }
2229
hci_cc_read_tx_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)2230 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2231 struct sk_buff *skb)
2232 {
2233 struct hci_cp_read_tx_power *sent;
2234 struct hci_rp_read_tx_power *rp = data;
2235 struct hci_conn *conn;
2236
2237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2238
2239 if (rp->status)
2240 return rp->status;
2241
2242 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2243 if (!sent)
2244 return rp->status;
2245
2246 hci_dev_lock(hdev);
2247
2248 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2249 if (!conn)
2250 goto unlock;
2251
2252 switch (sent->type) {
2253 case 0x00:
2254 conn->tx_power = rp->tx_power;
2255 break;
2256 case 0x01:
2257 conn->max_tx_power = rp->tx_power;
2258 break;
2259 }
2260
2261 unlock:
2262 hci_dev_unlock(hdev);
2263 return rp->status;
2264 }
2265
hci_cc_write_ssp_debug_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)2266 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2267 struct sk_buff *skb)
2268 {
2269 struct hci_ev_status *rp = data;
2270 u8 *mode;
2271
2272 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2273
2274 if (rp->status)
2275 return rp->status;
2276
2277 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2278 if (mode)
2279 hdev->ssp_debug_mode = *mode;
2280
2281 return rp->status;
2282 }
2283
hci_cs_inquiry(struct hci_dev * hdev,__u8 status)2284 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2285 {
2286 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2287
2288 if (status) {
2289 hci_conn_check_pending(hdev);
2290 return;
2291 }
2292
2293 set_bit(HCI_INQUIRY, &hdev->flags);
2294 }
2295
hci_cs_create_conn(struct hci_dev * hdev,__u8 status)2296 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2297 {
2298 struct hci_cp_create_conn *cp;
2299 struct hci_conn *conn;
2300
2301 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2302
2303 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2304 if (!cp)
2305 return;
2306
2307 hci_dev_lock(hdev);
2308
2309 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2310
2311 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2312
2313 if (status) {
2314 if (conn && conn->state == BT_CONNECT) {
2315 if (status != 0x0c || conn->attempt > 2) {
2316 conn->state = BT_CLOSED;
2317 hci_connect_cfm(conn, status);
2318 hci_conn_del(conn);
2319 } else
2320 conn->state = BT_CONNECT2;
2321 }
2322 } else {
2323 if (!conn) {
2324 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
2325 HCI_ROLE_MASTER);
2326 if (!conn)
2327 bt_dev_err(hdev, "no memory for new connection");
2328 }
2329 }
2330
2331 hci_dev_unlock(hdev);
2332 }
2333
hci_cs_add_sco(struct hci_dev * hdev,__u8 status)2334 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2335 {
2336 struct hci_cp_add_sco *cp;
2337 struct hci_conn *acl, *sco;
2338 __u16 handle;
2339
2340 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2341
2342 if (!status)
2343 return;
2344
2345 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2346 if (!cp)
2347 return;
2348
2349 handle = __le16_to_cpu(cp->handle);
2350
2351 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2352
2353 hci_dev_lock(hdev);
2354
2355 acl = hci_conn_hash_lookup_handle(hdev, handle);
2356 if (acl) {
2357 sco = acl->link;
2358 if (sco) {
2359 sco->state = BT_CLOSED;
2360
2361 hci_connect_cfm(sco, status);
2362 hci_conn_del(sco);
2363 }
2364 }
2365
2366 hci_dev_unlock(hdev);
2367 }
2368
hci_cs_auth_requested(struct hci_dev * hdev,__u8 status)2369 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2370 {
2371 struct hci_cp_auth_requested *cp;
2372 struct hci_conn *conn;
2373
2374 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2375
2376 if (!status)
2377 return;
2378
2379 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2380 if (!cp)
2381 return;
2382
2383 hci_dev_lock(hdev);
2384
2385 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2386 if (conn) {
2387 if (conn->state == BT_CONFIG) {
2388 hci_connect_cfm(conn, status);
2389 hci_conn_drop(conn);
2390 }
2391 }
2392
2393 hci_dev_unlock(hdev);
2394 }
2395
hci_cs_set_conn_encrypt(struct hci_dev * hdev,__u8 status)2396 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2397 {
2398 struct hci_cp_set_conn_encrypt *cp;
2399 struct hci_conn *conn;
2400
2401 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2402
2403 if (!status)
2404 return;
2405
2406 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2407 if (!cp)
2408 return;
2409
2410 hci_dev_lock(hdev);
2411
2412 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2413 if (conn) {
2414 if (conn->state == BT_CONFIG) {
2415 hci_connect_cfm(conn, status);
2416 hci_conn_drop(conn);
2417 }
2418 }
2419
2420 hci_dev_unlock(hdev);
2421 }
2422
hci_outgoing_auth_needed(struct hci_dev * hdev,struct hci_conn * conn)2423 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2424 struct hci_conn *conn)
2425 {
2426 if (conn->state != BT_CONFIG || !conn->out)
2427 return 0;
2428
2429 if (conn->pending_sec_level == BT_SECURITY_SDP)
2430 return 0;
2431
2432 /* Only request authentication for SSP connections or non-SSP
2433 * devices with sec_level MEDIUM or HIGH or if MITM protection
2434 * is requested.
2435 */
2436 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2437 conn->pending_sec_level != BT_SECURITY_FIPS &&
2438 conn->pending_sec_level != BT_SECURITY_HIGH &&
2439 conn->pending_sec_level != BT_SECURITY_MEDIUM)
2440 return 0;
2441
2442 return 1;
2443 }
2444
hci_resolve_name(struct hci_dev * hdev,struct inquiry_entry * e)2445 static int hci_resolve_name(struct hci_dev *hdev,
2446 struct inquiry_entry *e)
2447 {
2448 struct hci_cp_remote_name_req cp;
2449
2450 memset(&cp, 0, sizeof(cp));
2451
2452 bacpy(&cp.bdaddr, &e->data.bdaddr);
2453 cp.pscan_rep_mode = e->data.pscan_rep_mode;
2454 cp.pscan_mode = e->data.pscan_mode;
2455 cp.clock_offset = e->data.clock_offset;
2456
2457 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2458 }
2459
hci_resolve_next_name(struct hci_dev * hdev)2460 static bool hci_resolve_next_name(struct hci_dev *hdev)
2461 {
2462 struct discovery_state *discov = &hdev->discovery;
2463 struct inquiry_entry *e;
2464
2465 if (list_empty(&discov->resolve))
2466 return false;
2467
2468 /* We should stop if we already spent too much time resolving names. */
2469 if (time_after(jiffies, discov->name_resolve_timeout)) {
2470 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2471 return false;
2472 }
2473
2474 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2475 if (!e)
2476 return false;
2477
2478 if (hci_resolve_name(hdev, e) == 0) {
2479 e->name_state = NAME_PENDING;
2480 return true;
2481 }
2482
2483 return false;
2484 }
2485
hci_check_pending_name(struct hci_dev * hdev,struct hci_conn * conn,bdaddr_t * bdaddr,u8 * name,u8 name_len)2486 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2487 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2488 {
2489 struct discovery_state *discov = &hdev->discovery;
2490 struct inquiry_entry *e;
2491
2492 /* Update the mgmt connected state if necessary. Be careful with
2493 * conn objects that exist but are not (yet) connected however.
2494 * Only those in BT_CONFIG or BT_CONNECTED states can be
2495 * considered connected.
2496 */
2497 if (conn &&
2498 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2499 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2500 mgmt_device_connected(hdev, conn, name, name_len);
2501
2502 if (discov->state == DISCOVERY_STOPPED)
2503 return;
2504
2505 if (discov->state == DISCOVERY_STOPPING)
2506 goto discov_complete;
2507
2508 if (discov->state != DISCOVERY_RESOLVING)
2509 return;
2510
2511 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2512 /* If the device was not found in a list of found devices names of which
2513 * are pending. there is no need to continue resolving a next name as it
2514 * will be done upon receiving another Remote Name Request Complete
2515 * Event */
2516 if (!e)
2517 return;
2518
2519 list_del(&e->list);
2520
2521 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2522 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2523 name, name_len);
2524
2525 if (hci_resolve_next_name(hdev))
2526 return;
2527
2528 discov_complete:
2529 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2530 }
2531
hci_cs_remote_name_req(struct hci_dev * hdev,__u8 status)2532 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2533 {
2534 struct hci_cp_remote_name_req *cp;
2535 struct hci_conn *conn;
2536
2537 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2538
2539 /* If successful wait for the name req complete event before
2540 * checking for the need to do authentication */
2541 if (!status)
2542 return;
2543
2544 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2545 if (!cp)
2546 return;
2547
2548 hci_dev_lock(hdev);
2549
2550 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2551
2552 if (hci_dev_test_flag(hdev, HCI_MGMT))
2553 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2554
2555 if (!conn)
2556 goto unlock;
2557
2558 if (!hci_outgoing_auth_needed(hdev, conn))
2559 goto unlock;
2560
2561 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2562 struct hci_cp_auth_requested auth_cp;
2563
2564 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2565
2566 auth_cp.handle = __cpu_to_le16(conn->handle);
2567 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2568 sizeof(auth_cp), &auth_cp);
2569 }
2570
2571 unlock:
2572 hci_dev_unlock(hdev);
2573 }
2574
hci_cs_read_remote_features(struct hci_dev * hdev,__u8 status)2575 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2576 {
2577 struct hci_cp_read_remote_features *cp;
2578 struct hci_conn *conn;
2579
2580 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2581
2582 if (!status)
2583 return;
2584
2585 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2586 if (!cp)
2587 return;
2588
2589 hci_dev_lock(hdev);
2590
2591 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2592 if (conn) {
2593 if (conn->state == BT_CONFIG) {
2594 hci_connect_cfm(conn, status);
2595 hci_conn_drop(conn);
2596 }
2597 }
2598
2599 hci_dev_unlock(hdev);
2600 }
2601
hci_cs_read_remote_ext_features(struct hci_dev * hdev,__u8 status)2602 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2603 {
2604 struct hci_cp_read_remote_ext_features *cp;
2605 struct hci_conn *conn;
2606
2607 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2608
2609 if (!status)
2610 return;
2611
2612 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2613 if (!cp)
2614 return;
2615
2616 hci_dev_lock(hdev);
2617
2618 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2619 if (conn) {
2620 if (conn->state == BT_CONFIG) {
2621 hci_connect_cfm(conn, status);
2622 hci_conn_drop(conn);
2623 }
2624 }
2625
2626 hci_dev_unlock(hdev);
2627 }
2628
hci_cs_setup_sync_conn(struct hci_dev * hdev,__u8 status)2629 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2630 {
2631 struct hci_cp_setup_sync_conn *cp;
2632 struct hci_conn *acl, *sco;
2633 __u16 handle;
2634
2635 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2636
2637 if (!status)
2638 return;
2639
2640 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2641 if (!cp)
2642 return;
2643
2644 handle = __le16_to_cpu(cp->handle);
2645
2646 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2647
2648 hci_dev_lock(hdev);
2649
2650 acl = hci_conn_hash_lookup_handle(hdev, handle);
2651 if (acl) {
2652 sco = acl->link;
2653 if (sco) {
2654 sco->state = BT_CLOSED;
2655
2656 hci_connect_cfm(sco, status);
2657 hci_conn_del(sco);
2658 }
2659 }
2660
2661 hci_dev_unlock(hdev);
2662 }
2663
hci_cs_enhanced_setup_sync_conn(struct hci_dev * hdev,__u8 status)2664 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2665 {
2666 struct hci_cp_enhanced_setup_sync_conn *cp;
2667 struct hci_conn *acl, *sco;
2668 __u16 handle;
2669
2670 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2671
2672 if (!status)
2673 return;
2674
2675 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2676 if (!cp)
2677 return;
2678
2679 handle = __le16_to_cpu(cp->handle);
2680
2681 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2682
2683 hci_dev_lock(hdev);
2684
2685 acl = hci_conn_hash_lookup_handle(hdev, handle);
2686 if (acl) {
2687 sco = acl->link;
2688 if (sco) {
2689 sco->state = BT_CLOSED;
2690
2691 hci_connect_cfm(sco, status);
2692 hci_conn_del(sco);
2693 }
2694 }
2695
2696 hci_dev_unlock(hdev);
2697 }
2698
hci_cs_sniff_mode(struct hci_dev * hdev,__u8 status)2699 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2700 {
2701 struct hci_cp_sniff_mode *cp;
2702 struct hci_conn *conn;
2703
2704 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2705
2706 if (!status)
2707 return;
2708
2709 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2710 if (!cp)
2711 return;
2712
2713 hci_dev_lock(hdev);
2714
2715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2716 if (conn) {
2717 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2718
2719 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2720 hci_sco_setup(conn, status);
2721 }
2722
2723 hci_dev_unlock(hdev);
2724 }
2725
hci_cs_exit_sniff_mode(struct hci_dev * hdev,__u8 status)2726 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2727 {
2728 struct hci_cp_exit_sniff_mode *cp;
2729 struct hci_conn *conn;
2730
2731 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2732
2733 if (!status)
2734 return;
2735
2736 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2737 if (!cp)
2738 return;
2739
2740 hci_dev_lock(hdev);
2741
2742 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2743 if (conn) {
2744 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2745
2746 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2747 hci_sco_setup(conn, status);
2748 }
2749
2750 hci_dev_unlock(hdev);
2751 }
2752
hci_cs_disconnect(struct hci_dev * hdev,u8 status)2753 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2754 {
2755 struct hci_cp_disconnect *cp;
2756 struct hci_conn_params *params;
2757 struct hci_conn *conn;
2758 bool mgmt_conn;
2759
2760 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2761
2762 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2763 * otherwise cleanup the connection immediately.
2764 */
2765 if (!status && !hdev->suspended)
2766 return;
2767
2768 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2769 if (!cp)
2770 return;
2771
2772 hci_dev_lock(hdev);
2773
2774 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2775 if (!conn)
2776 goto unlock;
2777
2778 if (status) {
2779 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2780 conn->dst_type, status);
2781
2782 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2783 hdev->cur_adv_instance = conn->adv_instance;
2784 hci_enable_advertising(hdev);
2785 }
2786
2787 goto done;
2788 }
2789
2790 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2791
2792 if (conn->type == ACL_LINK) {
2793 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2794 hci_remove_link_key(hdev, &conn->dst);
2795 }
2796
2797 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2798 if (params) {
2799 switch (params->auto_connect) {
2800 case HCI_AUTO_CONN_LINK_LOSS:
2801 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2802 break;
2803 fallthrough;
2804
2805 case HCI_AUTO_CONN_DIRECT:
2806 case HCI_AUTO_CONN_ALWAYS:
2807 list_del_init(¶ms->action);
2808 list_add(¶ms->action, &hdev->pend_le_conns);
2809 break;
2810
2811 default:
2812 break;
2813 }
2814 }
2815
2816 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2817 cp->reason, mgmt_conn);
2818
2819 hci_disconn_cfm(conn, cp->reason);
2820
2821 done:
2822 /* If the disconnection failed for any reason, the upper layer
2823 * does not retry to disconnect in current implementation.
2824 * Hence, we need to do some basic cleanup here and re-enable
2825 * advertising if necessary.
2826 */
2827 hci_conn_del(conn);
2828 unlock:
2829 hci_dev_unlock(hdev);
2830 }
2831
ev_bdaddr_type(struct hci_dev * hdev,u8 type,bool * resolved)2832 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2833 {
2834 /* When using controller based address resolution, then the new
2835 * address types 0x02 and 0x03 are used. These types need to be
2836 * converted back into either public address or random address type
2837 */
2838 switch (type) {
2839 case ADDR_LE_DEV_PUBLIC_RESOLVED:
2840 if (resolved)
2841 *resolved = true;
2842 return ADDR_LE_DEV_PUBLIC;
2843 case ADDR_LE_DEV_RANDOM_RESOLVED:
2844 if (resolved)
2845 *resolved = true;
2846 return ADDR_LE_DEV_RANDOM;
2847 }
2848
2849 if (resolved)
2850 *resolved = false;
2851 return type;
2852 }
2853
cs_le_create_conn(struct hci_dev * hdev,bdaddr_t * peer_addr,u8 peer_addr_type,u8 own_address_type,u8 filter_policy)2854 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2855 u8 peer_addr_type, u8 own_address_type,
2856 u8 filter_policy)
2857 {
2858 struct hci_conn *conn;
2859
2860 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2861 peer_addr_type);
2862 if (!conn)
2863 return;
2864
2865 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2866
2867 /* Store the initiator and responder address information which
2868 * is needed for SMP. These values will not change during the
2869 * lifetime of the connection.
2870 */
2871 conn->init_addr_type = own_address_type;
2872 if (own_address_type == ADDR_LE_DEV_RANDOM)
2873 bacpy(&conn->init_addr, &hdev->random_addr);
2874 else
2875 bacpy(&conn->init_addr, &hdev->bdaddr);
2876
2877 conn->resp_addr_type = peer_addr_type;
2878 bacpy(&conn->resp_addr, peer_addr);
2879
2880 /* We don't want the connection attempt to stick around
2881 * indefinitely since LE doesn't have a page timeout concept
2882 * like BR/EDR. Set a timer for any connection that doesn't use
2883 * the accept list for connecting.
2884 */
2885 if (filter_policy == HCI_LE_USE_PEER_ADDR)
2886 queue_delayed_work(conn->hdev->workqueue,
2887 &conn->le_conn_timeout,
2888 conn->conn_timeout);
2889 }
2890
hci_cs_le_create_conn(struct hci_dev * hdev,u8 status)2891 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2892 {
2893 struct hci_cp_le_create_conn *cp;
2894
2895 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2896
2897 /* All connection failure handling is taken care of by the
2898 * hci_conn_failed function which is triggered by the HCI
2899 * request completion callbacks used for connecting.
2900 */
2901 if (status)
2902 return;
2903
2904 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2905 if (!cp)
2906 return;
2907
2908 hci_dev_lock(hdev);
2909
2910 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2911 cp->own_address_type, cp->filter_policy);
2912
2913 hci_dev_unlock(hdev);
2914 }
2915
hci_cs_le_ext_create_conn(struct hci_dev * hdev,u8 status)2916 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2917 {
2918 struct hci_cp_le_ext_create_conn *cp;
2919
2920 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2921
2922 /* All connection failure handling is taken care of by the
2923 * hci_conn_failed function which is triggered by the HCI
2924 * request completion callbacks used for connecting.
2925 */
2926 if (status)
2927 return;
2928
2929 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2930 if (!cp)
2931 return;
2932
2933 hci_dev_lock(hdev);
2934
2935 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2936 cp->own_addr_type, cp->filter_policy);
2937
2938 hci_dev_unlock(hdev);
2939 }
2940
hci_cs_le_read_remote_features(struct hci_dev * hdev,u8 status)2941 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2942 {
2943 struct hci_cp_le_read_remote_features *cp;
2944 struct hci_conn *conn;
2945
2946 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2947
2948 if (!status)
2949 return;
2950
2951 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2952 if (!cp)
2953 return;
2954
2955 hci_dev_lock(hdev);
2956
2957 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2958 if (conn) {
2959 if (conn->state == BT_CONFIG) {
2960 hci_connect_cfm(conn, status);
2961 hci_conn_drop(conn);
2962 }
2963 }
2964
2965 hci_dev_unlock(hdev);
2966 }
2967
hci_cs_le_start_enc(struct hci_dev * hdev,u8 status)2968 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2969 {
2970 struct hci_cp_le_start_enc *cp;
2971 struct hci_conn *conn;
2972
2973 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2974
2975 if (!status)
2976 return;
2977
2978 hci_dev_lock(hdev);
2979
2980 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2981 if (!cp)
2982 goto unlock;
2983
2984 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2985 if (!conn)
2986 goto unlock;
2987
2988 if (conn->state != BT_CONNECTED)
2989 goto unlock;
2990
2991 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2992 hci_conn_drop(conn);
2993
2994 unlock:
2995 hci_dev_unlock(hdev);
2996 }
2997
hci_cs_switch_role(struct hci_dev * hdev,u8 status)2998 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2999 {
3000 struct hci_cp_switch_role *cp;
3001 struct hci_conn *conn;
3002
3003 BT_DBG("%s status 0x%2.2x", hdev->name, status);
3004
3005 if (!status)
3006 return;
3007
3008 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3009 if (!cp)
3010 return;
3011
3012 hci_dev_lock(hdev);
3013
3014 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3015 if (conn)
3016 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3017
3018 hci_dev_unlock(hdev);
3019 }
3020
hci_inquiry_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3021 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3022 struct sk_buff *skb)
3023 {
3024 struct hci_ev_status *ev = data;
3025 struct discovery_state *discov = &hdev->discovery;
3026 struct inquiry_entry *e;
3027
3028 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3029
3030 hci_conn_check_pending(hdev);
3031
3032 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3033 return;
3034
3035 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3036 wake_up_bit(&hdev->flags, HCI_INQUIRY);
3037
3038 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3039 return;
3040
3041 hci_dev_lock(hdev);
3042
3043 if (discov->state != DISCOVERY_FINDING)
3044 goto unlock;
3045
3046 if (list_empty(&discov->resolve)) {
3047 /* When BR/EDR inquiry is active and no LE scanning is in
3048 * progress, then change discovery state to indicate completion.
3049 *
3050 * When running LE scanning and BR/EDR inquiry simultaneously
3051 * and the LE scan already finished, then change the discovery
3052 * state to indicate completion.
3053 */
3054 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3055 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3056 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3057 goto unlock;
3058 }
3059
3060 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3061 if (e && hci_resolve_name(hdev, e) == 0) {
3062 e->name_state = NAME_PENDING;
3063 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3064 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3065 } else {
3066 /* When BR/EDR inquiry is active and no LE scanning is in
3067 * progress, then change discovery state to indicate completion.
3068 *
3069 * When running LE scanning and BR/EDR inquiry simultaneously
3070 * and the LE scan already finished, then change the discovery
3071 * state to indicate completion.
3072 */
3073 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3074 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3075 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3076 }
3077
3078 unlock:
3079 hci_dev_unlock(hdev);
3080 }
3081
hci_inquiry_result_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)3082 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3083 struct sk_buff *skb)
3084 {
3085 struct hci_ev_inquiry_result *ev = edata;
3086 struct inquiry_data data;
3087 int i;
3088
3089 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3090 flex_array_size(ev, info, ev->num)))
3091 return;
3092
3093 bt_dev_dbg(hdev, "num %d", ev->num);
3094
3095 if (!ev->num)
3096 return;
3097
3098 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3099 return;
3100
3101 hci_dev_lock(hdev);
3102
3103 for (i = 0; i < ev->num; i++) {
3104 struct inquiry_info *info = &ev->info[i];
3105 u32 flags;
3106
3107 bacpy(&data.bdaddr, &info->bdaddr);
3108 data.pscan_rep_mode = info->pscan_rep_mode;
3109 data.pscan_period_mode = info->pscan_period_mode;
3110 data.pscan_mode = info->pscan_mode;
3111 memcpy(data.dev_class, info->dev_class, 3);
3112 data.clock_offset = info->clock_offset;
3113 data.rssi = HCI_RSSI_INVALID;
3114 data.ssp_mode = 0x00;
3115
3116 flags = hci_inquiry_cache_update(hdev, &data, false);
3117
3118 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3119 info->dev_class, HCI_RSSI_INVALID,
3120 flags, NULL, 0, NULL, 0, 0);
3121 }
3122
3123 hci_dev_unlock(hdev);
3124 }
3125
hci_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3126 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3127 struct sk_buff *skb)
3128 {
3129 struct hci_ev_conn_complete *ev = data;
3130 struct hci_conn *conn;
3131 u8 status = ev->status;
3132
3133 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3134
3135 hci_dev_lock(hdev);
3136
3137 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3138 if (!conn) {
3139 /* In case of error status and there is no connection pending
3140 * just unlock as there is nothing to cleanup.
3141 */
3142 if (ev->status)
3143 goto unlock;
3144
3145 /* Connection may not exist if auto-connected. Check the bredr
3146 * allowlist to see if this device is allowed to auto connect.
3147 * If link is an ACL type, create a connection class
3148 * automatically.
3149 *
3150 * Auto-connect will only occur if the event filter is
3151 * programmed with a given address. Right now, event filter is
3152 * only used during suspend.
3153 */
3154 if (ev->link_type == ACL_LINK &&
3155 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3156 &ev->bdaddr,
3157 BDADDR_BREDR)) {
3158 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3159 HCI_ROLE_SLAVE);
3160 if (!conn) {
3161 bt_dev_err(hdev, "no memory for new conn");
3162 goto unlock;
3163 }
3164 } else {
3165 if (ev->link_type != SCO_LINK)
3166 goto unlock;
3167
3168 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3169 &ev->bdaddr);
3170 if (!conn)
3171 goto unlock;
3172
3173 conn->type = SCO_LINK;
3174 }
3175 }
3176
3177 /* The HCI_Connection_Complete event is only sent once per connection.
3178 * Processing it more than once per connection can corrupt kernel memory.
3179 *
3180 * As the connection handle is set here for the first time, it indicates
3181 * whether the connection is already set up.
3182 */
3183 if (conn->handle != HCI_CONN_HANDLE_UNSET) {
3184 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3185 goto unlock;
3186 }
3187
3188 if (!status) {
3189 conn->handle = __le16_to_cpu(ev->handle);
3190 if (conn->handle > HCI_CONN_HANDLE_MAX) {
3191 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
3192 conn->handle, HCI_CONN_HANDLE_MAX);
3193 status = HCI_ERROR_INVALID_PARAMETERS;
3194 goto done;
3195 }
3196
3197 if (conn->type == ACL_LINK) {
3198 conn->state = BT_CONFIG;
3199 hci_conn_hold(conn);
3200
3201 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3202 !hci_find_link_key(hdev, &ev->bdaddr))
3203 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3204 else
3205 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3206 } else
3207 conn->state = BT_CONNECTED;
3208
3209 hci_debugfs_create_conn(conn);
3210 hci_conn_add_sysfs(conn);
3211
3212 if (test_bit(HCI_AUTH, &hdev->flags))
3213 set_bit(HCI_CONN_AUTH, &conn->flags);
3214
3215 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3216 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3217
3218 /* Get remote features */
3219 if (conn->type == ACL_LINK) {
3220 struct hci_cp_read_remote_features cp;
3221 cp.handle = ev->handle;
3222 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3223 sizeof(cp), &cp);
3224
3225 hci_update_scan(hdev);
3226 }
3227
3228 /* Set packet type for incoming connection */
3229 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3230 struct hci_cp_change_conn_ptype cp;
3231 cp.handle = ev->handle;
3232 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3233 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3234 &cp);
3235 }
3236 }
3237
3238 if (conn->type == ACL_LINK)
3239 hci_sco_setup(conn, ev->status);
3240
3241 done:
3242 if (status) {
3243 hci_conn_failed(conn, status);
3244 } else if (ev->link_type == SCO_LINK) {
3245 switch (conn->setting & SCO_AIRMODE_MASK) {
3246 case SCO_AIRMODE_CVSD:
3247 if (hdev->notify)
3248 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3249 break;
3250 }
3251
3252 hci_connect_cfm(conn, status);
3253 }
3254
3255 unlock:
3256 hci_dev_unlock(hdev);
3257
3258 hci_conn_check_pending(hdev);
3259 }
3260
hci_reject_conn(struct hci_dev * hdev,bdaddr_t * bdaddr)3261 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3262 {
3263 struct hci_cp_reject_conn_req cp;
3264
3265 bacpy(&cp.bdaddr, bdaddr);
3266 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3267 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3268 }
3269
hci_conn_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3270 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3271 struct sk_buff *skb)
3272 {
3273 struct hci_ev_conn_request *ev = data;
3274 int mask = hdev->link_mode;
3275 struct inquiry_entry *ie;
3276 struct hci_conn *conn;
3277 __u8 flags = 0;
3278
3279 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3280
3281 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3282 &flags);
3283
3284 if (!(mask & HCI_LM_ACCEPT)) {
3285 hci_reject_conn(hdev, &ev->bdaddr);
3286 return;
3287 }
3288
3289 hci_dev_lock(hdev);
3290
3291 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3292 BDADDR_BREDR)) {
3293 hci_reject_conn(hdev, &ev->bdaddr);
3294 goto unlock;
3295 }
3296
3297 /* Require HCI_CONNECTABLE or an accept list entry to accept the
3298 * connection. These features are only touched through mgmt so
3299 * only do the checks if HCI_MGMT is set.
3300 */
3301 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3302 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3303 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3304 BDADDR_BREDR)) {
3305 hci_reject_conn(hdev, &ev->bdaddr);
3306 goto unlock;
3307 }
3308
3309 /* Connection accepted */
3310
3311 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3312 if (ie)
3313 memcpy(ie->data.dev_class, ev->dev_class, 3);
3314
3315 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3316 &ev->bdaddr);
3317 if (!conn) {
3318 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3319 HCI_ROLE_SLAVE);
3320 if (!conn) {
3321 bt_dev_err(hdev, "no memory for new connection");
3322 goto unlock;
3323 }
3324 }
3325
3326 memcpy(conn->dev_class, ev->dev_class, 3);
3327
3328 hci_dev_unlock(hdev);
3329
3330 if (ev->link_type == ACL_LINK ||
3331 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3332 struct hci_cp_accept_conn_req cp;
3333 conn->state = BT_CONNECT;
3334
3335 bacpy(&cp.bdaddr, &ev->bdaddr);
3336
3337 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3338 cp.role = 0x00; /* Become central */
3339 else
3340 cp.role = 0x01; /* Remain peripheral */
3341
3342 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3343 } else if (!(flags & HCI_PROTO_DEFER)) {
3344 struct hci_cp_accept_sync_conn_req cp;
3345 conn->state = BT_CONNECT;
3346
3347 bacpy(&cp.bdaddr, &ev->bdaddr);
3348 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3349
3350 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
3351 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
3352 cp.max_latency = cpu_to_le16(0xffff);
3353 cp.content_format = cpu_to_le16(hdev->voice_setting);
3354 cp.retrans_effort = 0xff;
3355
3356 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3357 &cp);
3358 } else {
3359 conn->state = BT_CONNECT2;
3360 hci_connect_cfm(conn, 0);
3361 }
3362
3363 return;
3364 unlock:
3365 hci_dev_unlock(hdev);
3366 }
3367
hci_to_mgmt_reason(u8 err)3368 static u8 hci_to_mgmt_reason(u8 err)
3369 {
3370 switch (err) {
3371 case HCI_ERROR_CONNECTION_TIMEOUT:
3372 return MGMT_DEV_DISCONN_TIMEOUT;
3373 case HCI_ERROR_REMOTE_USER_TERM:
3374 case HCI_ERROR_REMOTE_LOW_RESOURCES:
3375 case HCI_ERROR_REMOTE_POWER_OFF:
3376 return MGMT_DEV_DISCONN_REMOTE;
3377 case HCI_ERROR_LOCAL_HOST_TERM:
3378 return MGMT_DEV_DISCONN_LOCAL_HOST;
3379 default:
3380 return MGMT_DEV_DISCONN_UNKNOWN;
3381 }
3382 }
3383
hci_disconn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3384 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3385 struct sk_buff *skb)
3386 {
3387 struct hci_ev_disconn_complete *ev = data;
3388 u8 reason;
3389 struct hci_conn_params *params;
3390 struct hci_conn *conn;
3391 bool mgmt_connected;
3392
3393 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3394
3395 hci_dev_lock(hdev);
3396
3397 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3398 if (!conn)
3399 goto unlock;
3400
3401 if (ev->status) {
3402 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3403 conn->dst_type, ev->status);
3404 goto unlock;
3405 }
3406
3407 conn->state = BT_CLOSED;
3408
3409 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3410
3411 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3412 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3413 else
3414 reason = hci_to_mgmt_reason(ev->reason);
3415
3416 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3417 reason, mgmt_connected);
3418
3419 if (conn->type == ACL_LINK) {
3420 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3421 hci_remove_link_key(hdev, &conn->dst);
3422
3423 hci_update_scan(hdev);
3424 }
3425
3426 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3427 if (params) {
3428 switch (params->auto_connect) {
3429 case HCI_AUTO_CONN_LINK_LOSS:
3430 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3431 break;
3432 fallthrough;
3433
3434 case HCI_AUTO_CONN_DIRECT:
3435 case HCI_AUTO_CONN_ALWAYS:
3436 list_del_init(¶ms->action);
3437 list_add(¶ms->action, &hdev->pend_le_conns);
3438 hci_update_passive_scan(hdev);
3439 break;
3440
3441 default:
3442 break;
3443 }
3444 }
3445
3446 hci_disconn_cfm(conn, ev->reason);
3447
3448 /* Re-enable advertising if necessary, since it might
3449 * have been disabled by the connection. From the
3450 * HCI_LE_Set_Advertise_Enable command description in
3451 * the core specification (v4.0):
3452 * "The Controller shall continue advertising until the Host
3453 * issues an LE_Set_Advertise_Enable command with
3454 * Advertising_Enable set to 0x00 (Advertising is disabled)
3455 * or until a connection is created or until the Advertising
3456 * is timed out due to Directed Advertising."
3457 */
3458 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3459 hdev->cur_adv_instance = conn->adv_instance;
3460 hci_enable_advertising(hdev);
3461 }
3462
3463 hci_conn_del(conn);
3464
3465 unlock:
3466 hci_dev_unlock(hdev);
3467 }
3468
hci_auth_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3469 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3470 struct sk_buff *skb)
3471 {
3472 struct hci_ev_auth_complete *ev = data;
3473 struct hci_conn *conn;
3474
3475 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3476
3477 hci_dev_lock(hdev);
3478
3479 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3480 if (!conn)
3481 goto unlock;
3482
3483 if (!ev->status) {
3484 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3485
3486 if (!hci_conn_ssp_enabled(conn) &&
3487 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3488 bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3489 } else {
3490 set_bit(HCI_CONN_AUTH, &conn->flags);
3491 conn->sec_level = conn->pending_sec_level;
3492 }
3493 } else {
3494 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3495 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3496
3497 mgmt_auth_failed(conn, ev->status);
3498 }
3499
3500 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3501 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3502
3503 if (conn->state == BT_CONFIG) {
3504 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3505 struct hci_cp_set_conn_encrypt cp;
3506 cp.handle = ev->handle;
3507 cp.encrypt = 0x01;
3508 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3509 &cp);
3510 } else {
3511 conn->state = BT_CONNECTED;
3512 hci_connect_cfm(conn, ev->status);
3513 hci_conn_drop(conn);
3514 }
3515 } else {
3516 hci_auth_cfm(conn, ev->status);
3517
3518 hci_conn_hold(conn);
3519 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3520 hci_conn_drop(conn);
3521 }
3522
3523 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3524 if (!ev->status) {
3525 struct hci_cp_set_conn_encrypt cp;
3526 cp.handle = ev->handle;
3527 cp.encrypt = 0x01;
3528 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3529 &cp);
3530 } else {
3531 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3532 hci_encrypt_cfm(conn, ev->status);
3533 }
3534 }
3535
3536 unlock:
3537 hci_dev_unlock(hdev);
3538 }
3539
hci_remote_name_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3540 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3541 struct sk_buff *skb)
3542 {
3543 struct hci_ev_remote_name *ev = data;
3544 struct hci_conn *conn;
3545
3546 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3547
3548 hci_conn_check_pending(hdev);
3549
3550 hci_dev_lock(hdev);
3551
3552 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3553
3554 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3555 goto check_auth;
3556
3557 if (ev->status == 0)
3558 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3559 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3560 else
3561 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3562
3563 check_auth:
3564 if (!conn)
3565 goto unlock;
3566
3567 if (!hci_outgoing_auth_needed(hdev, conn))
3568 goto unlock;
3569
3570 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3571 struct hci_cp_auth_requested cp;
3572
3573 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3574
3575 cp.handle = __cpu_to_le16(conn->handle);
3576 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3577 }
3578
3579 unlock:
3580 hci_dev_unlock(hdev);
3581 }
3582
hci_encrypt_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3583 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3584 struct sk_buff *skb)
3585 {
3586 struct hci_ev_encrypt_change *ev = data;
3587 struct hci_conn *conn;
3588
3589 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3590
3591 hci_dev_lock(hdev);
3592
3593 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3594 if (!conn)
3595 goto unlock;
3596
3597 if (!ev->status) {
3598 if (ev->encrypt) {
3599 /* Encryption implies authentication */
3600 set_bit(HCI_CONN_AUTH, &conn->flags);
3601 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3602 conn->sec_level = conn->pending_sec_level;
3603
3604 /* P-256 authentication key implies FIPS */
3605 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3606 set_bit(HCI_CONN_FIPS, &conn->flags);
3607
3608 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3609 conn->type == LE_LINK)
3610 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3611 } else {
3612 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3613 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3614 }
3615 }
3616
3617 /* We should disregard the current RPA and generate a new one
3618 * whenever the encryption procedure fails.
3619 */
3620 if (ev->status && conn->type == LE_LINK) {
3621 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3622 hci_adv_instances_set_rpa_expired(hdev, true);
3623 }
3624
3625 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3626
3627 /* Check link security requirements are met */
3628 if (!hci_conn_check_link_mode(conn))
3629 ev->status = HCI_ERROR_AUTH_FAILURE;
3630
3631 if (ev->status && conn->state == BT_CONNECTED) {
3632 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3633 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3634
3635 /* Notify upper layers so they can cleanup before
3636 * disconnecting.
3637 */
3638 hci_encrypt_cfm(conn, ev->status);
3639 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3640 hci_conn_drop(conn);
3641 goto unlock;
3642 }
3643
3644 /* Try reading the encryption key size for encrypted ACL links */
3645 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3646 struct hci_cp_read_enc_key_size cp;
3647
3648 /* Only send HCI_Read_Encryption_Key_Size if the
3649 * controller really supports it. If it doesn't, assume
3650 * the default size (16).
3651 */
3652 if (!(hdev->commands[20] & 0x10)) {
3653 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3654 goto notify;
3655 }
3656
3657 cp.handle = cpu_to_le16(conn->handle);
3658 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3659 sizeof(cp), &cp)) {
3660 bt_dev_err(hdev, "sending read key size failed");
3661 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3662 goto notify;
3663 }
3664
3665 goto unlock;
3666 }
3667
3668 /* Set the default Authenticated Payload Timeout after
3669 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3670 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3671 * sent when the link is active and Encryption is enabled, the conn
3672 * type can be either LE or ACL and controller must support LMP Ping.
3673 * Ensure for AES-CCM encryption as well.
3674 */
3675 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3676 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3677 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3678 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3679 struct hci_cp_write_auth_payload_to cp;
3680
3681 cp.handle = cpu_to_le16(conn->handle);
3682 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3683 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3684 sizeof(cp), &cp);
3685 }
3686
3687 notify:
3688 hci_encrypt_cfm(conn, ev->status);
3689
3690 unlock:
3691 hci_dev_unlock(hdev);
3692 }
3693
hci_change_link_key_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3694 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3695 struct sk_buff *skb)
3696 {
3697 struct hci_ev_change_link_key_complete *ev = data;
3698 struct hci_conn *conn;
3699
3700 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3701
3702 hci_dev_lock(hdev);
3703
3704 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3705 if (conn) {
3706 if (!ev->status)
3707 set_bit(HCI_CONN_SECURE, &conn->flags);
3708
3709 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3710
3711 hci_key_change_cfm(conn, ev->status);
3712 }
3713
3714 hci_dev_unlock(hdev);
3715 }
3716
hci_remote_features_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3717 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3718 struct sk_buff *skb)
3719 {
3720 struct hci_ev_remote_features *ev = data;
3721 struct hci_conn *conn;
3722
3723 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3724
3725 hci_dev_lock(hdev);
3726
3727 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3728 if (!conn)
3729 goto unlock;
3730
3731 if (!ev->status)
3732 memcpy(conn->features[0], ev->features, 8);
3733
3734 if (conn->state != BT_CONFIG)
3735 goto unlock;
3736
3737 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3738 lmp_ext_feat_capable(conn)) {
3739 struct hci_cp_read_remote_ext_features cp;
3740 cp.handle = ev->handle;
3741 cp.page = 0x01;
3742 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3743 sizeof(cp), &cp);
3744 goto unlock;
3745 }
3746
3747 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3748 struct hci_cp_remote_name_req cp;
3749 memset(&cp, 0, sizeof(cp));
3750 bacpy(&cp.bdaddr, &conn->dst);
3751 cp.pscan_rep_mode = 0x02;
3752 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3753 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3754 mgmt_device_connected(hdev, conn, NULL, 0);
3755
3756 if (!hci_outgoing_auth_needed(hdev, conn)) {
3757 conn->state = BT_CONNECTED;
3758 hci_connect_cfm(conn, ev->status);
3759 hci_conn_drop(conn);
3760 }
3761
3762 unlock:
3763 hci_dev_unlock(hdev);
3764 }
3765
handle_cmd_cnt_and_timer(struct hci_dev * hdev,u8 ncmd)3766 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3767 {
3768 cancel_delayed_work(&hdev->cmd_timer);
3769
3770 rcu_read_lock();
3771 if (!test_bit(HCI_RESET, &hdev->flags)) {
3772 if (ncmd) {
3773 cancel_delayed_work(&hdev->ncmd_timer);
3774 atomic_set(&hdev->cmd_cnt, 1);
3775 } else {
3776 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3777 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3778 HCI_NCMD_TIMEOUT);
3779 }
3780 }
3781 rcu_read_unlock();
3782 }
3783
hci_cc_le_read_buffer_size_v2(struct hci_dev * hdev,void * data,struct sk_buff * skb)3784 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3785 struct sk_buff *skb)
3786 {
3787 struct hci_rp_le_read_buffer_size_v2 *rp = data;
3788
3789 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3790
3791 if (rp->status)
3792 return rp->status;
3793
3794 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
3795 hdev->le_pkts = rp->acl_max_pkt;
3796 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
3797 hdev->iso_pkts = rp->iso_max_pkt;
3798
3799 hdev->le_cnt = hdev->le_pkts;
3800 hdev->iso_cnt = hdev->iso_pkts;
3801
3802 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3803 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3804
3805 return rp->status;
3806 }
3807
hci_cc_le_set_cig_params(struct hci_dev * hdev,void * data,struct sk_buff * skb)3808 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3809 struct sk_buff *skb)
3810 {
3811 struct hci_rp_le_set_cig_params *rp = data;
3812 struct hci_conn *conn;
3813 int i = 0;
3814
3815 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3816
3817 hci_dev_lock(hdev);
3818
3819 if (rp->status) {
3820 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
3821 conn->state = BT_CLOSED;
3822 hci_connect_cfm(conn, rp->status);
3823 hci_conn_del(conn);
3824 }
3825 goto unlock;
3826 }
3827
3828 rcu_read_lock();
3829
3830 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
3831 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
3832 conn->state == BT_CONNECTED)
3833 continue;
3834
3835 conn->handle = __le16_to_cpu(rp->handle[i++]);
3836
3837 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
3838 conn->handle, conn->link);
3839
3840 /* Create CIS if LE is already connected */
3841 if (conn->link && conn->link->state == BT_CONNECTED)
3842 hci_le_create_cis(conn->link);
3843
3844 if (i == rp->num_handles)
3845 break;
3846 }
3847
3848 rcu_read_unlock();
3849
3850 unlock:
3851 hci_dev_unlock(hdev);
3852
3853 return rp->status;
3854 }
3855
hci_cc_le_setup_iso_path(struct hci_dev * hdev,void * data,struct sk_buff * skb)3856 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3857 struct sk_buff *skb)
3858 {
3859 struct hci_rp_le_setup_iso_path *rp = data;
3860 struct hci_cp_le_setup_iso_path *cp;
3861 struct hci_conn *conn;
3862
3863 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3864
3865 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3866 if (!cp)
3867 return rp->status;
3868
3869 hci_dev_lock(hdev);
3870
3871 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3872 if (!conn)
3873 goto unlock;
3874
3875 if (rp->status) {
3876 hci_connect_cfm(conn, rp->status);
3877 hci_conn_del(conn);
3878 goto unlock;
3879 }
3880
3881 switch (cp->direction) {
3882 /* Input (Host to Controller) */
3883 case 0x00:
3884 /* Only confirm connection if output only */
3885 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
3886 hci_connect_cfm(conn, rp->status);
3887 break;
3888 /* Output (Controller to Host) */
3889 case 0x01:
3890 /* Confirm connection since conn->iso_qos is always configured
3891 * last.
3892 */
3893 hci_connect_cfm(conn, rp->status);
3894 break;
3895 }
3896
3897 unlock:
3898 hci_dev_unlock(hdev);
3899 return rp->status;
3900 }
3901
hci_cs_le_create_big(struct hci_dev * hdev,u8 status)3902 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3903 {
3904 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3905 }
3906
hci_cc_set_per_adv_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)3907 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3908 struct sk_buff *skb)
3909 {
3910 struct hci_ev_status *rp = data;
3911 struct hci_cp_le_set_per_adv_params *cp;
3912
3913 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3914
3915 if (rp->status)
3916 return rp->status;
3917
3918 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3919 if (!cp)
3920 return rp->status;
3921
3922 /* TODO: set the conn state */
3923 return rp->status;
3924 }
3925
hci_cc_le_set_per_adv_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)3926 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3927 struct sk_buff *skb)
3928 {
3929 struct hci_ev_status *rp = data;
3930 __u8 *sent;
3931
3932 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3933
3934 if (rp->status)
3935 return rp->status;
3936
3937 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3938 if (!sent)
3939 return rp->status;
3940
3941 hci_dev_lock(hdev);
3942
3943 if (*sent)
3944 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3945 else
3946 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3947
3948 hci_dev_unlock(hdev);
3949
3950 return rp->status;
3951 }
3952
3953 #define HCI_CC_VL(_op, _func, _min, _max) \
3954 { \
3955 .op = _op, \
3956 .func = _func, \
3957 .min_len = _min, \
3958 .max_len = _max, \
3959 }
3960
3961 #define HCI_CC(_op, _func, _len) \
3962 HCI_CC_VL(_op, _func, _len, _len)
3963
3964 #define HCI_CC_STATUS(_op, _func) \
3965 HCI_CC(_op, _func, sizeof(struct hci_ev_status))
3966
3967 static const struct hci_cc {
3968 u16 op;
3969 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
3970 u16 min_len;
3971 u16 max_len;
3972 } hci_cc_table[] = {
3973 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
3974 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
3975 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
3976 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
3977 hci_cc_remote_name_req_cancel),
3978 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
3979 sizeof(struct hci_rp_role_discovery)),
3980 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
3981 sizeof(struct hci_rp_read_link_policy)),
3982 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
3983 sizeof(struct hci_rp_write_link_policy)),
3984 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
3985 sizeof(struct hci_rp_read_def_link_policy)),
3986 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
3987 hci_cc_write_def_link_policy),
3988 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
3989 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
3990 sizeof(struct hci_rp_read_stored_link_key)),
3991 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
3992 sizeof(struct hci_rp_delete_stored_link_key)),
3993 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
3994 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
3995 sizeof(struct hci_rp_read_local_name)),
3996 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
3997 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
3998 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
3999 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4000 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4001 sizeof(struct hci_rp_read_class_of_dev)),
4002 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4003 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4004 sizeof(struct hci_rp_read_voice_setting)),
4005 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4006 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4007 sizeof(struct hci_rp_read_num_supported_iac)),
4008 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4009 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4010 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4011 sizeof(struct hci_rp_read_auth_payload_to)),
4012 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4013 sizeof(struct hci_rp_write_auth_payload_to)),
4014 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4015 sizeof(struct hci_rp_read_local_version)),
4016 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4017 sizeof(struct hci_rp_read_local_commands)),
4018 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4019 sizeof(struct hci_rp_read_local_features)),
4020 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4021 sizeof(struct hci_rp_read_local_ext_features)),
4022 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4023 sizeof(struct hci_rp_read_buffer_size)),
4024 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4025 sizeof(struct hci_rp_read_bd_addr)),
4026 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4027 sizeof(struct hci_rp_read_local_pairing_opts)),
4028 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4029 sizeof(struct hci_rp_read_page_scan_activity)),
4030 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4031 hci_cc_write_page_scan_activity),
4032 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4033 sizeof(struct hci_rp_read_page_scan_type)),
4034 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4035 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4036 sizeof(struct hci_rp_read_data_block_size)),
4037 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4038 sizeof(struct hci_rp_read_flow_control_mode)),
4039 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4040 sizeof(struct hci_rp_read_local_amp_info)),
4041 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4042 sizeof(struct hci_rp_read_clock)),
4043 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4044 sizeof(struct hci_rp_read_enc_key_size)),
4045 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4046 sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4047 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4048 hci_cc_read_def_err_data_reporting,
4049 sizeof(struct hci_rp_read_def_err_data_reporting)),
4050 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4051 hci_cc_write_def_err_data_reporting),
4052 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4053 sizeof(struct hci_rp_pin_code_reply)),
4054 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4055 sizeof(struct hci_rp_pin_code_neg_reply)),
4056 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4057 sizeof(struct hci_rp_read_local_oob_data)),
4058 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4059 sizeof(struct hci_rp_read_local_oob_ext_data)),
4060 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4061 sizeof(struct hci_rp_le_read_buffer_size)),
4062 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4063 sizeof(struct hci_rp_le_read_local_features)),
4064 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4065 sizeof(struct hci_rp_le_read_adv_tx_power)),
4066 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4067 sizeof(struct hci_rp_user_confirm_reply)),
4068 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4069 sizeof(struct hci_rp_user_confirm_reply)),
4070 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4071 sizeof(struct hci_rp_user_confirm_reply)),
4072 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4073 sizeof(struct hci_rp_user_confirm_reply)),
4074 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4075 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4076 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4077 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4078 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4079 hci_cc_le_read_accept_list_size,
4080 sizeof(struct hci_rp_le_read_accept_list_size)),
4081 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4082 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4083 hci_cc_le_add_to_accept_list),
4084 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4085 hci_cc_le_del_from_accept_list),
4086 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4087 sizeof(struct hci_rp_le_read_supported_states)),
4088 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4089 sizeof(struct hci_rp_le_read_def_data_len)),
4090 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4091 hci_cc_le_write_def_data_len),
4092 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4093 hci_cc_le_add_to_resolv_list),
4094 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4095 hci_cc_le_del_from_resolv_list),
4096 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4097 hci_cc_le_clear_resolv_list),
4098 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4099 sizeof(struct hci_rp_le_read_resolv_list_size)),
4100 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4101 hci_cc_le_set_addr_resolution_enable),
4102 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4103 sizeof(struct hci_rp_le_read_max_data_len)),
4104 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4105 hci_cc_write_le_host_supported),
4106 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4107 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4108 sizeof(struct hci_rp_read_rssi)),
4109 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4110 sizeof(struct hci_rp_read_tx_power)),
4111 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4112 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4113 hci_cc_le_set_ext_scan_param),
4114 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4115 hci_cc_le_set_ext_scan_enable),
4116 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4117 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4118 hci_cc_le_read_num_adv_sets,
4119 sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4120 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4121 sizeof(struct hci_rp_le_set_ext_adv_params)),
4122 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4123 hci_cc_le_set_ext_adv_enable),
4124 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4125 hci_cc_le_set_adv_set_random_addr),
4126 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4127 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4128 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4129 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4130 hci_cc_le_set_per_adv_enable),
4131 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4132 sizeof(struct hci_rp_le_read_transmit_power)),
4133 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4134 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4135 sizeof(struct hci_rp_le_read_buffer_size_v2)),
4136 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4137 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4138 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4139 sizeof(struct hci_rp_le_setup_iso_path)),
4140 };
4141
hci_cc_func(struct hci_dev * hdev,const struct hci_cc * cc,struct sk_buff * skb)4142 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4143 struct sk_buff *skb)
4144 {
4145 void *data;
4146
4147 if (skb->len < cc->min_len) {
4148 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4149 cc->op, skb->len, cc->min_len);
4150 return HCI_ERROR_UNSPECIFIED;
4151 }
4152
4153 /* Just warn if the length is over max_len size it still be possible to
4154 * partially parse the cc so leave to callback to decide if that is
4155 * acceptable.
4156 */
4157 if (skb->len > cc->max_len)
4158 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4159 cc->op, skb->len, cc->max_len);
4160
4161 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4162 if (!data)
4163 return HCI_ERROR_UNSPECIFIED;
4164
4165 return cc->func(hdev, data, skb);
4166 }
4167
hci_cmd_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb,u16 * opcode,u8 * status,hci_req_complete_t * req_complete,hci_req_complete_skb_t * req_complete_skb)4168 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4169 struct sk_buff *skb, u16 *opcode, u8 *status,
4170 hci_req_complete_t *req_complete,
4171 hci_req_complete_skb_t *req_complete_skb)
4172 {
4173 struct hci_ev_cmd_complete *ev = data;
4174 int i;
4175
4176 *opcode = __le16_to_cpu(ev->opcode);
4177
4178 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4179
4180 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4181 if (hci_cc_table[i].op == *opcode) {
4182 *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4183 break;
4184 }
4185 }
4186
4187 if (i == ARRAY_SIZE(hci_cc_table)) {
4188 /* Unknown opcode, assume byte 0 contains the status, so
4189 * that e.g. __hci_cmd_sync() properly returns errors
4190 * for vendor specific commands send by HCI drivers.
4191 * If a vendor doesn't actually follow this convention we may
4192 * need to introduce a vendor CC table in order to properly set
4193 * the status.
4194 */
4195 *status = skb->data[0];
4196 }
4197
4198 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4199
4200 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4201 req_complete_skb);
4202
4203 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4204 bt_dev_err(hdev,
4205 "unexpected event for opcode 0x%4.4x", *opcode);
4206 return;
4207 }
4208
4209 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4210 queue_work(hdev->workqueue, &hdev->cmd_work);
4211 }
4212
hci_cs_le_create_cis(struct hci_dev * hdev,u8 status)4213 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4214 {
4215 struct hci_cp_le_create_cis *cp;
4216 int i;
4217
4218 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4219
4220 if (!status)
4221 return;
4222
4223 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4224 if (!cp)
4225 return;
4226
4227 hci_dev_lock(hdev);
4228
4229 /* Remove connection if command failed */
4230 for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4231 struct hci_conn *conn;
4232 u16 handle;
4233
4234 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4235
4236 conn = hci_conn_hash_lookup_handle(hdev, handle);
4237 if (conn) {
4238 conn->state = BT_CLOSED;
4239 hci_connect_cfm(conn, status);
4240 hci_conn_del(conn);
4241 }
4242 }
4243
4244 hci_dev_unlock(hdev);
4245 }
4246
4247 #define HCI_CS(_op, _func) \
4248 { \
4249 .op = _op, \
4250 .func = _func, \
4251 }
4252
4253 static const struct hci_cs {
4254 u16 op;
4255 void (*func)(struct hci_dev *hdev, __u8 status);
4256 } hci_cs_table[] = {
4257 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4258 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4259 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4260 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4261 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4262 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4263 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4264 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4265 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4266 hci_cs_read_remote_ext_features),
4267 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4268 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4269 hci_cs_enhanced_setup_sync_conn),
4270 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4271 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4272 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4273 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4274 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4275 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4276 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4277 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4278 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4279 };
4280
hci_cmd_status_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb,u16 * opcode,u8 * status,hci_req_complete_t * req_complete,hci_req_complete_skb_t * req_complete_skb)4281 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4282 struct sk_buff *skb, u16 *opcode, u8 *status,
4283 hci_req_complete_t *req_complete,
4284 hci_req_complete_skb_t *req_complete_skb)
4285 {
4286 struct hci_ev_cmd_status *ev = data;
4287 int i;
4288
4289 *opcode = __le16_to_cpu(ev->opcode);
4290 *status = ev->status;
4291
4292 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4293
4294 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4295 if (hci_cs_table[i].op == *opcode) {
4296 hci_cs_table[i].func(hdev, ev->status);
4297 break;
4298 }
4299 }
4300
4301 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4302
4303 /* Indicate request completion if the command failed. Also, if
4304 * we're not waiting for a special event and we get a success
4305 * command status we should try to flag the request as completed
4306 * (since for this kind of commands there will not be a command
4307 * complete event).
4308 */
4309 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4310 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4311 req_complete_skb);
4312 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4313 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4314 *opcode);
4315 return;
4316 }
4317 }
4318
4319 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4320 queue_work(hdev->workqueue, &hdev->cmd_work);
4321 }
4322
hci_hardware_error_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4323 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4324 struct sk_buff *skb)
4325 {
4326 struct hci_ev_hardware_error *ev = data;
4327
4328 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4329
4330 hdev->hw_error_code = ev->code;
4331
4332 queue_work(hdev->req_workqueue, &hdev->error_reset);
4333 }
4334
hci_role_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4335 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4336 struct sk_buff *skb)
4337 {
4338 struct hci_ev_role_change *ev = data;
4339 struct hci_conn *conn;
4340
4341 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4342
4343 hci_dev_lock(hdev);
4344
4345 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4346 if (conn) {
4347 if (!ev->status)
4348 conn->role = ev->role;
4349
4350 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4351
4352 hci_role_switch_cfm(conn, ev->status, ev->role);
4353 }
4354
4355 hci_dev_unlock(hdev);
4356 }
4357
hci_num_comp_pkts_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4358 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4359 struct sk_buff *skb)
4360 {
4361 struct hci_ev_num_comp_pkts *ev = data;
4362 int i;
4363
4364 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4365 flex_array_size(ev, handles, ev->num)))
4366 return;
4367
4368 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4369 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4370 return;
4371 }
4372
4373 bt_dev_dbg(hdev, "num %d", ev->num);
4374
4375 for (i = 0; i < ev->num; i++) {
4376 struct hci_comp_pkts_info *info = &ev->handles[i];
4377 struct hci_conn *conn;
4378 __u16 handle, count;
4379
4380 handle = __le16_to_cpu(info->handle);
4381 count = __le16_to_cpu(info->count);
4382
4383 conn = hci_conn_hash_lookup_handle(hdev, handle);
4384 if (!conn)
4385 continue;
4386
4387 conn->sent -= count;
4388
4389 switch (conn->type) {
4390 case ACL_LINK:
4391 hdev->acl_cnt += count;
4392 if (hdev->acl_cnt > hdev->acl_pkts)
4393 hdev->acl_cnt = hdev->acl_pkts;
4394 break;
4395
4396 case LE_LINK:
4397 if (hdev->le_pkts) {
4398 hdev->le_cnt += count;
4399 if (hdev->le_cnt > hdev->le_pkts)
4400 hdev->le_cnt = hdev->le_pkts;
4401 } else {
4402 hdev->acl_cnt += count;
4403 if (hdev->acl_cnt > hdev->acl_pkts)
4404 hdev->acl_cnt = hdev->acl_pkts;
4405 }
4406 break;
4407
4408 case SCO_LINK:
4409 hdev->sco_cnt += count;
4410 if (hdev->sco_cnt > hdev->sco_pkts)
4411 hdev->sco_cnt = hdev->sco_pkts;
4412 break;
4413
4414 case ISO_LINK:
4415 if (hdev->iso_pkts) {
4416 hdev->iso_cnt += count;
4417 if (hdev->iso_cnt > hdev->iso_pkts)
4418 hdev->iso_cnt = hdev->iso_pkts;
4419 } else if (hdev->le_pkts) {
4420 hdev->le_cnt += count;
4421 if (hdev->le_cnt > hdev->le_pkts)
4422 hdev->le_cnt = hdev->le_pkts;
4423 } else {
4424 hdev->acl_cnt += count;
4425 if (hdev->acl_cnt > hdev->acl_pkts)
4426 hdev->acl_cnt = hdev->acl_pkts;
4427 }
4428 break;
4429
4430 default:
4431 bt_dev_err(hdev, "unknown type %d conn %p",
4432 conn->type, conn);
4433 break;
4434 }
4435 }
4436
4437 queue_work(hdev->workqueue, &hdev->tx_work);
4438 }
4439
__hci_conn_lookup_handle(struct hci_dev * hdev,__u16 handle)4440 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4441 __u16 handle)
4442 {
4443 struct hci_chan *chan;
4444
4445 switch (hdev->dev_type) {
4446 case HCI_PRIMARY:
4447 return hci_conn_hash_lookup_handle(hdev, handle);
4448 case HCI_AMP:
4449 chan = hci_chan_lookup_handle(hdev, handle);
4450 if (chan)
4451 return chan->conn;
4452 break;
4453 default:
4454 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4455 break;
4456 }
4457
4458 return NULL;
4459 }
4460
hci_num_comp_blocks_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4461 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4462 struct sk_buff *skb)
4463 {
4464 struct hci_ev_num_comp_blocks *ev = data;
4465 int i;
4466
4467 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4468 flex_array_size(ev, handles, ev->num_hndl)))
4469 return;
4470
4471 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4472 bt_dev_err(hdev, "wrong event for mode %d",
4473 hdev->flow_ctl_mode);
4474 return;
4475 }
4476
4477 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4478 ev->num_hndl);
4479
4480 for (i = 0; i < ev->num_hndl; i++) {
4481 struct hci_comp_blocks_info *info = &ev->handles[i];
4482 struct hci_conn *conn = NULL;
4483 __u16 handle, block_count;
4484
4485 handle = __le16_to_cpu(info->handle);
4486 block_count = __le16_to_cpu(info->blocks);
4487
4488 conn = __hci_conn_lookup_handle(hdev, handle);
4489 if (!conn)
4490 continue;
4491
4492 conn->sent -= block_count;
4493
4494 switch (conn->type) {
4495 case ACL_LINK:
4496 case AMP_LINK:
4497 hdev->block_cnt += block_count;
4498 if (hdev->block_cnt > hdev->num_blocks)
4499 hdev->block_cnt = hdev->num_blocks;
4500 break;
4501
4502 default:
4503 bt_dev_err(hdev, "unknown type %d conn %p",
4504 conn->type, conn);
4505 break;
4506 }
4507 }
4508
4509 queue_work(hdev->workqueue, &hdev->tx_work);
4510 }
4511
hci_mode_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4512 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4513 struct sk_buff *skb)
4514 {
4515 struct hci_ev_mode_change *ev = data;
4516 struct hci_conn *conn;
4517
4518 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4519
4520 hci_dev_lock(hdev);
4521
4522 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4523 if (conn) {
4524 conn->mode = ev->mode;
4525
4526 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4527 &conn->flags)) {
4528 if (conn->mode == HCI_CM_ACTIVE)
4529 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4530 else
4531 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4532 }
4533
4534 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4535 hci_sco_setup(conn, ev->status);
4536 }
4537
4538 hci_dev_unlock(hdev);
4539 }
4540
hci_pin_code_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4541 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4542 struct sk_buff *skb)
4543 {
4544 struct hci_ev_pin_code_req *ev = data;
4545 struct hci_conn *conn;
4546
4547 bt_dev_dbg(hdev, "");
4548
4549 hci_dev_lock(hdev);
4550
4551 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4552 if (!conn)
4553 goto unlock;
4554
4555 if (conn->state == BT_CONNECTED) {
4556 hci_conn_hold(conn);
4557 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4558 hci_conn_drop(conn);
4559 }
4560
4561 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4562 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4563 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4564 sizeof(ev->bdaddr), &ev->bdaddr);
4565 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4566 u8 secure;
4567
4568 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4569 secure = 1;
4570 else
4571 secure = 0;
4572
4573 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4574 }
4575
4576 unlock:
4577 hci_dev_unlock(hdev);
4578 }
4579
conn_set_key(struct hci_conn * conn,u8 key_type,u8 pin_len)4580 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4581 {
4582 if (key_type == HCI_LK_CHANGED_COMBINATION)
4583 return;
4584
4585 conn->pin_length = pin_len;
4586 conn->key_type = key_type;
4587
4588 switch (key_type) {
4589 case HCI_LK_LOCAL_UNIT:
4590 case HCI_LK_REMOTE_UNIT:
4591 case HCI_LK_DEBUG_COMBINATION:
4592 return;
4593 case HCI_LK_COMBINATION:
4594 if (pin_len == 16)
4595 conn->pending_sec_level = BT_SECURITY_HIGH;
4596 else
4597 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4598 break;
4599 case HCI_LK_UNAUTH_COMBINATION_P192:
4600 case HCI_LK_UNAUTH_COMBINATION_P256:
4601 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4602 break;
4603 case HCI_LK_AUTH_COMBINATION_P192:
4604 conn->pending_sec_level = BT_SECURITY_HIGH;
4605 break;
4606 case HCI_LK_AUTH_COMBINATION_P256:
4607 conn->pending_sec_level = BT_SECURITY_FIPS;
4608 break;
4609 }
4610 }
4611
hci_link_key_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4612 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4613 struct sk_buff *skb)
4614 {
4615 struct hci_ev_link_key_req *ev = data;
4616 struct hci_cp_link_key_reply cp;
4617 struct hci_conn *conn;
4618 struct link_key *key;
4619
4620 bt_dev_dbg(hdev, "");
4621
4622 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4623 return;
4624
4625 hci_dev_lock(hdev);
4626
4627 key = hci_find_link_key(hdev, &ev->bdaddr);
4628 if (!key) {
4629 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4630 goto not_found;
4631 }
4632
4633 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4634
4635 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4636 if (conn) {
4637 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4638
4639 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4640 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4641 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4642 bt_dev_dbg(hdev, "ignoring unauthenticated key");
4643 goto not_found;
4644 }
4645
4646 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4647 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4648 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4649 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4650 goto not_found;
4651 }
4652
4653 conn_set_key(conn, key->type, key->pin_len);
4654 }
4655
4656 bacpy(&cp.bdaddr, &ev->bdaddr);
4657 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4658
4659 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4660
4661 hci_dev_unlock(hdev);
4662
4663 return;
4664
4665 not_found:
4666 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4667 hci_dev_unlock(hdev);
4668 }
4669
hci_link_key_notify_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4670 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4671 struct sk_buff *skb)
4672 {
4673 struct hci_ev_link_key_notify *ev = data;
4674 struct hci_conn *conn;
4675 struct link_key *key;
4676 bool persistent;
4677 u8 pin_len = 0;
4678
4679 bt_dev_dbg(hdev, "");
4680
4681 hci_dev_lock(hdev);
4682
4683 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4684 if (!conn)
4685 goto unlock;
4686
4687 hci_conn_hold(conn);
4688 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4689 hci_conn_drop(conn);
4690
4691 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4692 conn_set_key(conn, ev->key_type, conn->pin_length);
4693
4694 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4695 goto unlock;
4696
4697 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4698 ev->key_type, pin_len, &persistent);
4699 if (!key)
4700 goto unlock;
4701
4702 /* Update connection information since adding the key will have
4703 * fixed up the type in the case of changed combination keys.
4704 */
4705 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4706 conn_set_key(conn, key->type, key->pin_len);
4707
4708 mgmt_new_link_key(hdev, key, persistent);
4709
4710 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4711 * is set. If it's not set simply remove the key from the kernel
4712 * list (we've still notified user space about it but with
4713 * store_hint being 0).
4714 */
4715 if (key->type == HCI_LK_DEBUG_COMBINATION &&
4716 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4717 list_del_rcu(&key->list);
4718 kfree_rcu(key, rcu);
4719 goto unlock;
4720 }
4721
4722 if (persistent)
4723 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4724 else
4725 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4726
4727 unlock:
4728 hci_dev_unlock(hdev);
4729 }
4730
hci_clock_offset_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4731 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4732 struct sk_buff *skb)
4733 {
4734 struct hci_ev_clock_offset *ev = data;
4735 struct hci_conn *conn;
4736
4737 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4738
4739 hci_dev_lock(hdev);
4740
4741 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4742 if (conn && !ev->status) {
4743 struct inquiry_entry *ie;
4744
4745 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4746 if (ie) {
4747 ie->data.clock_offset = ev->clock_offset;
4748 ie->timestamp = jiffies;
4749 }
4750 }
4751
4752 hci_dev_unlock(hdev);
4753 }
4754
hci_pkt_type_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4755 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4756 struct sk_buff *skb)
4757 {
4758 struct hci_ev_pkt_type_change *ev = data;
4759 struct hci_conn *conn;
4760
4761 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4762
4763 hci_dev_lock(hdev);
4764
4765 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4766 if (conn && !ev->status)
4767 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4768
4769 hci_dev_unlock(hdev);
4770 }
4771
hci_pscan_rep_mode_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4772 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4773 struct sk_buff *skb)
4774 {
4775 struct hci_ev_pscan_rep_mode *ev = data;
4776 struct inquiry_entry *ie;
4777
4778 bt_dev_dbg(hdev, "");
4779
4780 hci_dev_lock(hdev);
4781
4782 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4783 if (ie) {
4784 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4785 ie->timestamp = jiffies;
4786 }
4787
4788 hci_dev_unlock(hdev);
4789 }
4790
hci_inquiry_result_with_rssi_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)4791 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4792 struct sk_buff *skb)
4793 {
4794 struct hci_ev_inquiry_result_rssi *ev = edata;
4795 struct inquiry_data data;
4796 int i;
4797
4798 bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4799
4800 if (!ev->num)
4801 return;
4802
4803 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4804 return;
4805
4806 hci_dev_lock(hdev);
4807
4808 if (skb->len == array_size(ev->num,
4809 sizeof(struct inquiry_info_rssi_pscan))) {
4810 struct inquiry_info_rssi_pscan *info;
4811
4812 for (i = 0; i < ev->num; i++) {
4813 u32 flags;
4814
4815 info = hci_ev_skb_pull(hdev, skb,
4816 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4817 sizeof(*info));
4818 if (!info) {
4819 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4820 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4821 goto unlock;
4822 }
4823
4824 bacpy(&data.bdaddr, &info->bdaddr);
4825 data.pscan_rep_mode = info->pscan_rep_mode;
4826 data.pscan_period_mode = info->pscan_period_mode;
4827 data.pscan_mode = info->pscan_mode;
4828 memcpy(data.dev_class, info->dev_class, 3);
4829 data.clock_offset = info->clock_offset;
4830 data.rssi = info->rssi;
4831 data.ssp_mode = 0x00;
4832
4833 flags = hci_inquiry_cache_update(hdev, &data, false);
4834
4835 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4836 info->dev_class, info->rssi,
4837 flags, NULL, 0, NULL, 0, 0);
4838 }
4839 } else if (skb->len == array_size(ev->num,
4840 sizeof(struct inquiry_info_rssi))) {
4841 struct inquiry_info_rssi *info;
4842
4843 for (i = 0; i < ev->num; i++) {
4844 u32 flags;
4845
4846 info = hci_ev_skb_pull(hdev, skb,
4847 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4848 sizeof(*info));
4849 if (!info) {
4850 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4851 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4852 goto unlock;
4853 }
4854
4855 bacpy(&data.bdaddr, &info->bdaddr);
4856 data.pscan_rep_mode = info->pscan_rep_mode;
4857 data.pscan_period_mode = info->pscan_period_mode;
4858 data.pscan_mode = 0x00;
4859 memcpy(data.dev_class, info->dev_class, 3);
4860 data.clock_offset = info->clock_offset;
4861 data.rssi = info->rssi;
4862 data.ssp_mode = 0x00;
4863
4864 flags = hci_inquiry_cache_update(hdev, &data, false);
4865
4866 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4867 info->dev_class, info->rssi,
4868 flags, NULL, 0, NULL, 0, 0);
4869 }
4870 } else {
4871 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4872 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4873 }
4874 unlock:
4875 hci_dev_unlock(hdev);
4876 }
4877
hci_remote_ext_features_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4878 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4879 struct sk_buff *skb)
4880 {
4881 struct hci_ev_remote_ext_features *ev = data;
4882 struct hci_conn *conn;
4883
4884 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4885
4886 hci_dev_lock(hdev);
4887
4888 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4889 if (!conn)
4890 goto unlock;
4891
4892 if (ev->page < HCI_MAX_PAGES)
4893 memcpy(conn->features[ev->page], ev->features, 8);
4894
4895 if (!ev->status && ev->page == 0x01) {
4896 struct inquiry_entry *ie;
4897
4898 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4899 if (ie)
4900 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4901
4902 if (ev->features[0] & LMP_HOST_SSP) {
4903 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4904 } else {
4905 /* It is mandatory by the Bluetooth specification that
4906 * Extended Inquiry Results are only used when Secure
4907 * Simple Pairing is enabled, but some devices violate
4908 * this.
4909 *
4910 * To make these devices work, the internal SSP
4911 * enabled flag needs to be cleared if the remote host
4912 * features do not indicate SSP support */
4913 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4914 }
4915
4916 if (ev->features[0] & LMP_HOST_SC)
4917 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4918 }
4919
4920 if (conn->state != BT_CONFIG)
4921 goto unlock;
4922
4923 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4924 struct hci_cp_remote_name_req cp;
4925 memset(&cp, 0, sizeof(cp));
4926 bacpy(&cp.bdaddr, &conn->dst);
4927 cp.pscan_rep_mode = 0x02;
4928 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4929 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4930 mgmt_device_connected(hdev, conn, NULL, 0);
4931
4932 if (!hci_outgoing_auth_needed(hdev, conn)) {
4933 conn->state = BT_CONNECTED;
4934 hci_connect_cfm(conn, ev->status);
4935 hci_conn_drop(conn);
4936 }
4937
4938 unlock:
4939 hci_dev_unlock(hdev);
4940 }
4941
hci_sync_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4942 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
4943 struct sk_buff *skb)
4944 {
4945 struct hci_ev_sync_conn_complete *ev = data;
4946 struct hci_conn *conn;
4947 u8 status = ev->status;
4948
4949 switch (ev->link_type) {
4950 case SCO_LINK:
4951 case ESCO_LINK:
4952 break;
4953 default:
4954 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
4955 * for HCI_Synchronous_Connection_Complete is limited to
4956 * either SCO or eSCO
4957 */
4958 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
4959 return;
4960 }
4961
4962 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4963
4964 hci_dev_lock(hdev);
4965
4966 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4967 if (!conn) {
4968 if (ev->link_type == ESCO_LINK)
4969 goto unlock;
4970
4971 /* When the link type in the event indicates SCO connection
4972 * and lookup of the connection object fails, then check
4973 * if an eSCO connection object exists.
4974 *
4975 * The core limits the synchronous connections to either
4976 * SCO or eSCO. The eSCO connection is preferred and tried
4977 * to be setup first and until successfully established,
4978 * the link type will be hinted as eSCO.
4979 */
4980 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4981 if (!conn)
4982 goto unlock;
4983 }
4984
4985 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
4986 * Processing it more than once per connection can corrupt kernel memory.
4987 *
4988 * As the connection handle is set here for the first time, it indicates
4989 * whether the connection is already set up.
4990 */
4991 if (conn->handle != HCI_CONN_HANDLE_UNSET) {
4992 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
4993 goto unlock;
4994 }
4995
4996 switch (status) {
4997 case 0x00:
4998 conn->handle = __le16_to_cpu(ev->handle);
4999 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5000 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5001 conn->handle, HCI_CONN_HANDLE_MAX);
5002 status = HCI_ERROR_INVALID_PARAMETERS;
5003 conn->state = BT_CLOSED;
5004 break;
5005 }
5006
5007 conn->state = BT_CONNECTED;
5008 conn->type = ev->link_type;
5009
5010 hci_debugfs_create_conn(conn);
5011 hci_conn_add_sysfs(conn);
5012 break;
5013
5014 case 0x10: /* Connection Accept Timeout */
5015 case 0x0d: /* Connection Rejected due to Limited Resources */
5016 case 0x11: /* Unsupported Feature or Parameter Value */
5017 case 0x1c: /* SCO interval rejected */
5018 case 0x1a: /* Unsupported Remote Feature */
5019 case 0x1e: /* Invalid LMP Parameters */
5020 case 0x1f: /* Unspecified error */
5021 case 0x20: /* Unsupported LMP Parameter value */
5022 if (conn->out) {
5023 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5024 (hdev->esco_type & EDR_ESCO_MASK);
5025 if (hci_setup_sync(conn, conn->link->handle))
5026 goto unlock;
5027 }
5028 fallthrough;
5029
5030 default:
5031 conn->state = BT_CLOSED;
5032 break;
5033 }
5034
5035 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5036 /* Notify only in case of SCO over HCI transport data path which
5037 * is zero and non-zero value shall be non-HCI transport data path
5038 */
5039 if (conn->codec.data_path == 0 && hdev->notify) {
5040 switch (ev->air_mode) {
5041 case 0x02:
5042 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5043 break;
5044 case 0x03:
5045 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5046 break;
5047 }
5048 }
5049
5050 hci_connect_cfm(conn, status);
5051 if (status)
5052 hci_conn_del(conn);
5053
5054 unlock:
5055 hci_dev_unlock(hdev);
5056 }
5057
eir_get_length(u8 * eir,size_t eir_len)5058 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5059 {
5060 size_t parsed = 0;
5061
5062 while (parsed < eir_len) {
5063 u8 field_len = eir[0];
5064
5065 if (field_len == 0)
5066 return parsed;
5067
5068 parsed += field_len + 1;
5069 eir += field_len + 1;
5070 }
5071
5072 return eir_len;
5073 }
5074
hci_extended_inquiry_result_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)5075 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5076 struct sk_buff *skb)
5077 {
5078 struct hci_ev_ext_inquiry_result *ev = edata;
5079 struct inquiry_data data;
5080 size_t eir_len;
5081 int i;
5082
5083 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5084 flex_array_size(ev, info, ev->num)))
5085 return;
5086
5087 bt_dev_dbg(hdev, "num %d", ev->num);
5088
5089 if (!ev->num)
5090 return;
5091
5092 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5093 return;
5094
5095 hci_dev_lock(hdev);
5096
5097 for (i = 0; i < ev->num; i++) {
5098 struct extended_inquiry_info *info = &ev->info[i];
5099 u32 flags;
5100 bool name_known;
5101
5102 bacpy(&data.bdaddr, &info->bdaddr);
5103 data.pscan_rep_mode = info->pscan_rep_mode;
5104 data.pscan_period_mode = info->pscan_period_mode;
5105 data.pscan_mode = 0x00;
5106 memcpy(data.dev_class, info->dev_class, 3);
5107 data.clock_offset = info->clock_offset;
5108 data.rssi = info->rssi;
5109 data.ssp_mode = 0x01;
5110
5111 if (hci_dev_test_flag(hdev, HCI_MGMT))
5112 name_known = eir_get_data(info->data,
5113 sizeof(info->data),
5114 EIR_NAME_COMPLETE, NULL);
5115 else
5116 name_known = true;
5117
5118 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5119
5120 eir_len = eir_get_length(info->data, sizeof(info->data));
5121
5122 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5123 info->dev_class, info->rssi,
5124 flags, info->data, eir_len, NULL, 0, 0);
5125 }
5126
5127 hci_dev_unlock(hdev);
5128 }
5129
hci_key_refresh_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5130 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5131 struct sk_buff *skb)
5132 {
5133 struct hci_ev_key_refresh_complete *ev = data;
5134 struct hci_conn *conn;
5135
5136 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5137 __le16_to_cpu(ev->handle));
5138
5139 hci_dev_lock(hdev);
5140
5141 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5142 if (!conn)
5143 goto unlock;
5144
5145 /* For BR/EDR the necessary steps are taken through the
5146 * auth_complete event.
5147 */
5148 if (conn->type != LE_LINK)
5149 goto unlock;
5150
5151 if (!ev->status)
5152 conn->sec_level = conn->pending_sec_level;
5153
5154 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5155
5156 if (ev->status && conn->state == BT_CONNECTED) {
5157 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5158 hci_conn_drop(conn);
5159 goto unlock;
5160 }
5161
5162 if (conn->state == BT_CONFIG) {
5163 if (!ev->status)
5164 conn->state = BT_CONNECTED;
5165
5166 hci_connect_cfm(conn, ev->status);
5167 hci_conn_drop(conn);
5168 } else {
5169 hci_auth_cfm(conn, ev->status);
5170
5171 hci_conn_hold(conn);
5172 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5173 hci_conn_drop(conn);
5174 }
5175
5176 unlock:
5177 hci_dev_unlock(hdev);
5178 }
5179
hci_get_auth_req(struct hci_conn * conn)5180 static u8 hci_get_auth_req(struct hci_conn *conn)
5181 {
5182 /* If remote requests no-bonding follow that lead */
5183 if (conn->remote_auth == HCI_AT_NO_BONDING ||
5184 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5185 return conn->remote_auth | (conn->auth_type & 0x01);
5186
5187 /* If both remote and local have enough IO capabilities, require
5188 * MITM protection
5189 */
5190 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5191 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5192 return conn->remote_auth | 0x01;
5193
5194 /* No MITM protection possible so ignore remote requirement */
5195 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5196 }
5197
bredr_oob_data_present(struct hci_conn * conn)5198 static u8 bredr_oob_data_present(struct hci_conn *conn)
5199 {
5200 struct hci_dev *hdev = conn->hdev;
5201 struct oob_data *data;
5202
5203 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5204 if (!data)
5205 return 0x00;
5206
5207 if (bredr_sc_enabled(hdev)) {
5208 /* When Secure Connections is enabled, then just
5209 * return the present value stored with the OOB
5210 * data. The stored value contains the right present
5211 * information. However it can only be trusted when
5212 * not in Secure Connection Only mode.
5213 */
5214 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5215 return data->present;
5216
5217 /* When Secure Connections Only mode is enabled, then
5218 * the P-256 values are required. If they are not
5219 * available, then do not declare that OOB data is
5220 * present.
5221 */
5222 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5223 !memcmp(data->hash256, ZERO_KEY, 16))
5224 return 0x00;
5225
5226 return 0x02;
5227 }
5228
5229 /* When Secure Connections is not enabled or actually
5230 * not supported by the hardware, then check that if
5231 * P-192 data values are present.
5232 */
5233 if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5234 !memcmp(data->hash192, ZERO_KEY, 16))
5235 return 0x00;
5236
5237 return 0x01;
5238 }
5239
hci_io_capa_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5240 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5241 struct sk_buff *skb)
5242 {
5243 struct hci_ev_io_capa_request *ev = data;
5244 struct hci_conn *conn;
5245
5246 bt_dev_dbg(hdev, "");
5247
5248 hci_dev_lock(hdev);
5249
5250 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5251 if (!conn)
5252 goto unlock;
5253
5254 hci_conn_hold(conn);
5255
5256 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5257 goto unlock;
5258
5259 /* Allow pairing if we're pairable, the initiators of the
5260 * pairing or if the remote is not requesting bonding.
5261 */
5262 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5263 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5264 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5265 struct hci_cp_io_capability_reply cp;
5266
5267 bacpy(&cp.bdaddr, &ev->bdaddr);
5268 /* Change the IO capability from KeyboardDisplay
5269 * to DisplayYesNo as it is not supported by BT spec. */
5270 cp.capability = (conn->io_capability == 0x04) ?
5271 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5272
5273 /* If we are initiators, there is no remote information yet */
5274 if (conn->remote_auth == 0xff) {
5275 /* Request MITM protection if our IO caps allow it
5276 * except for the no-bonding case.
5277 */
5278 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5279 conn->auth_type != HCI_AT_NO_BONDING)
5280 conn->auth_type |= 0x01;
5281 } else {
5282 conn->auth_type = hci_get_auth_req(conn);
5283 }
5284
5285 /* If we're not bondable, force one of the non-bondable
5286 * authentication requirement values.
5287 */
5288 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5289 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5290
5291 cp.authentication = conn->auth_type;
5292 cp.oob_data = bredr_oob_data_present(conn);
5293
5294 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5295 sizeof(cp), &cp);
5296 } else {
5297 struct hci_cp_io_capability_neg_reply cp;
5298
5299 bacpy(&cp.bdaddr, &ev->bdaddr);
5300 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5301
5302 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5303 sizeof(cp), &cp);
5304 }
5305
5306 unlock:
5307 hci_dev_unlock(hdev);
5308 }
5309
hci_io_capa_reply_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5310 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5311 struct sk_buff *skb)
5312 {
5313 struct hci_ev_io_capa_reply *ev = data;
5314 struct hci_conn *conn;
5315
5316 bt_dev_dbg(hdev, "");
5317
5318 hci_dev_lock(hdev);
5319
5320 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5321 if (!conn)
5322 goto unlock;
5323
5324 conn->remote_cap = ev->capability;
5325 conn->remote_auth = ev->authentication;
5326
5327 unlock:
5328 hci_dev_unlock(hdev);
5329 }
5330
hci_user_confirm_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5331 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5332 struct sk_buff *skb)
5333 {
5334 struct hci_ev_user_confirm_req *ev = data;
5335 int loc_mitm, rem_mitm, confirm_hint = 0;
5336 struct hci_conn *conn;
5337
5338 bt_dev_dbg(hdev, "");
5339
5340 hci_dev_lock(hdev);
5341
5342 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5343 goto unlock;
5344
5345 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5346 if (!conn)
5347 goto unlock;
5348
5349 loc_mitm = (conn->auth_type & 0x01);
5350 rem_mitm = (conn->remote_auth & 0x01);
5351
5352 /* If we require MITM but the remote device can't provide that
5353 * (it has NoInputNoOutput) then reject the confirmation
5354 * request. We check the security level here since it doesn't
5355 * necessarily match conn->auth_type.
5356 */
5357 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5358 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5359 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5360 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5361 sizeof(ev->bdaddr), &ev->bdaddr);
5362 goto unlock;
5363 }
5364
5365 /* If no side requires MITM protection; auto-accept */
5366 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5367 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5368
5369 /* If we're not the initiators request authorization to
5370 * proceed from user space (mgmt_user_confirm with
5371 * confirm_hint set to 1). The exception is if neither
5372 * side had MITM or if the local IO capability is
5373 * NoInputNoOutput, in which case we do auto-accept
5374 */
5375 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5376 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5377 (loc_mitm || rem_mitm)) {
5378 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5379 confirm_hint = 1;
5380 goto confirm;
5381 }
5382
5383 /* If there already exists link key in local host, leave the
5384 * decision to user space since the remote device could be
5385 * legitimate or malicious.
5386 */
5387 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5388 bt_dev_dbg(hdev, "Local host already has link key");
5389 confirm_hint = 1;
5390 goto confirm;
5391 }
5392
5393 BT_DBG("Auto-accept of user confirmation with %ums delay",
5394 hdev->auto_accept_delay);
5395
5396 if (hdev->auto_accept_delay > 0) {
5397 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5398 queue_delayed_work(conn->hdev->workqueue,
5399 &conn->auto_accept_work, delay);
5400 goto unlock;
5401 }
5402
5403 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5404 sizeof(ev->bdaddr), &ev->bdaddr);
5405 goto unlock;
5406 }
5407
5408 confirm:
5409 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5410 le32_to_cpu(ev->passkey), confirm_hint);
5411
5412 unlock:
5413 hci_dev_unlock(hdev);
5414 }
5415
hci_user_passkey_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5416 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5417 struct sk_buff *skb)
5418 {
5419 struct hci_ev_user_passkey_req *ev = data;
5420
5421 bt_dev_dbg(hdev, "");
5422
5423 if (hci_dev_test_flag(hdev, HCI_MGMT))
5424 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5425 }
5426
hci_user_passkey_notify_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5427 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5428 struct sk_buff *skb)
5429 {
5430 struct hci_ev_user_passkey_notify *ev = data;
5431 struct hci_conn *conn;
5432
5433 bt_dev_dbg(hdev, "");
5434
5435 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5436 if (!conn)
5437 return;
5438
5439 conn->passkey_notify = __le32_to_cpu(ev->passkey);
5440 conn->passkey_entered = 0;
5441
5442 if (hci_dev_test_flag(hdev, HCI_MGMT))
5443 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5444 conn->dst_type, conn->passkey_notify,
5445 conn->passkey_entered);
5446 }
5447
hci_keypress_notify_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5448 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5449 struct sk_buff *skb)
5450 {
5451 struct hci_ev_keypress_notify *ev = data;
5452 struct hci_conn *conn;
5453
5454 bt_dev_dbg(hdev, "");
5455
5456 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5457 if (!conn)
5458 return;
5459
5460 switch (ev->type) {
5461 case HCI_KEYPRESS_STARTED:
5462 conn->passkey_entered = 0;
5463 return;
5464
5465 case HCI_KEYPRESS_ENTERED:
5466 conn->passkey_entered++;
5467 break;
5468
5469 case HCI_KEYPRESS_ERASED:
5470 conn->passkey_entered--;
5471 break;
5472
5473 case HCI_KEYPRESS_CLEARED:
5474 conn->passkey_entered = 0;
5475 break;
5476
5477 case HCI_KEYPRESS_COMPLETED:
5478 return;
5479 }
5480
5481 if (hci_dev_test_flag(hdev, HCI_MGMT))
5482 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5483 conn->dst_type, conn->passkey_notify,
5484 conn->passkey_entered);
5485 }
5486
hci_simple_pair_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5487 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5488 struct sk_buff *skb)
5489 {
5490 struct hci_ev_simple_pair_complete *ev = data;
5491 struct hci_conn *conn;
5492
5493 bt_dev_dbg(hdev, "");
5494
5495 hci_dev_lock(hdev);
5496
5497 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5498 if (!conn)
5499 goto unlock;
5500
5501 /* Reset the authentication requirement to unknown */
5502 conn->remote_auth = 0xff;
5503
5504 /* To avoid duplicate auth_failed events to user space we check
5505 * the HCI_CONN_AUTH_PEND flag which will be set if we
5506 * initiated the authentication. A traditional auth_complete
5507 * event gets always produced as initiator and is also mapped to
5508 * the mgmt_auth_failed event */
5509 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5510 mgmt_auth_failed(conn, ev->status);
5511
5512 hci_conn_drop(conn);
5513
5514 unlock:
5515 hci_dev_unlock(hdev);
5516 }
5517
hci_remote_host_features_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5518 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5519 struct sk_buff *skb)
5520 {
5521 struct hci_ev_remote_host_features *ev = data;
5522 struct inquiry_entry *ie;
5523 struct hci_conn *conn;
5524
5525 bt_dev_dbg(hdev, "");
5526
5527 hci_dev_lock(hdev);
5528
5529 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5530 if (conn)
5531 memcpy(conn->features[1], ev->features, 8);
5532
5533 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5534 if (ie)
5535 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5536
5537 hci_dev_unlock(hdev);
5538 }
5539
hci_remote_oob_data_request_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)5540 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5541 struct sk_buff *skb)
5542 {
5543 struct hci_ev_remote_oob_data_request *ev = edata;
5544 struct oob_data *data;
5545
5546 bt_dev_dbg(hdev, "");
5547
5548 hci_dev_lock(hdev);
5549
5550 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5551 goto unlock;
5552
5553 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5554 if (!data) {
5555 struct hci_cp_remote_oob_data_neg_reply cp;
5556
5557 bacpy(&cp.bdaddr, &ev->bdaddr);
5558 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5559 sizeof(cp), &cp);
5560 goto unlock;
5561 }
5562
5563 if (bredr_sc_enabled(hdev)) {
5564 struct hci_cp_remote_oob_ext_data_reply cp;
5565
5566 bacpy(&cp.bdaddr, &ev->bdaddr);
5567 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5568 memset(cp.hash192, 0, sizeof(cp.hash192));
5569 memset(cp.rand192, 0, sizeof(cp.rand192));
5570 } else {
5571 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5572 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5573 }
5574 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5575 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5576
5577 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5578 sizeof(cp), &cp);
5579 } else {
5580 struct hci_cp_remote_oob_data_reply cp;
5581
5582 bacpy(&cp.bdaddr, &ev->bdaddr);
5583 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5584 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5585
5586 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5587 sizeof(cp), &cp);
5588 }
5589
5590 unlock:
5591 hci_dev_unlock(hdev);
5592 }
5593
5594 #if IS_ENABLED(CONFIG_BT_HS)
hci_chan_selected_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5595 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5596 struct sk_buff *skb)
5597 {
5598 struct hci_ev_channel_selected *ev = data;
5599 struct hci_conn *hcon;
5600
5601 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5602
5603 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5604 if (!hcon)
5605 return;
5606
5607 amp_read_loc_assoc_final_data(hdev, hcon);
5608 }
5609
hci_phy_link_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5610 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5611 struct sk_buff *skb)
5612 {
5613 struct hci_ev_phy_link_complete *ev = data;
5614 struct hci_conn *hcon, *bredr_hcon;
5615
5616 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5617 ev->status);
5618
5619 hci_dev_lock(hdev);
5620
5621 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5622 if (!hcon)
5623 goto unlock;
5624
5625 if (!hcon->amp_mgr)
5626 goto unlock;
5627
5628 if (ev->status) {
5629 hci_conn_del(hcon);
5630 goto unlock;
5631 }
5632
5633 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5634
5635 hcon->state = BT_CONNECTED;
5636 bacpy(&hcon->dst, &bredr_hcon->dst);
5637
5638 hci_conn_hold(hcon);
5639 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5640 hci_conn_drop(hcon);
5641
5642 hci_debugfs_create_conn(hcon);
5643 hci_conn_add_sysfs(hcon);
5644
5645 amp_physical_cfm(bredr_hcon, hcon);
5646
5647 unlock:
5648 hci_dev_unlock(hdev);
5649 }
5650
hci_loglink_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5651 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5652 struct sk_buff *skb)
5653 {
5654 struct hci_ev_logical_link_complete *ev = data;
5655 struct hci_conn *hcon;
5656 struct hci_chan *hchan;
5657 struct amp_mgr *mgr;
5658
5659 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5660 le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5661
5662 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5663 if (!hcon)
5664 return;
5665
5666 /* Create AMP hchan */
5667 hchan = hci_chan_create(hcon);
5668 if (!hchan)
5669 return;
5670
5671 hchan->handle = le16_to_cpu(ev->handle);
5672 hchan->amp = true;
5673
5674 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5675
5676 mgr = hcon->amp_mgr;
5677 if (mgr && mgr->bredr_chan) {
5678 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5679
5680 l2cap_chan_lock(bredr_chan);
5681
5682 bredr_chan->conn->mtu = hdev->block_mtu;
5683 l2cap_logical_cfm(bredr_chan, hchan, 0);
5684 hci_conn_hold(hcon);
5685
5686 l2cap_chan_unlock(bredr_chan);
5687 }
5688 }
5689
hci_disconn_loglink_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5690 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5691 struct sk_buff *skb)
5692 {
5693 struct hci_ev_disconn_logical_link_complete *ev = data;
5694 struct hci_chan *hchan;
5695
5696 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5697 le16_to_cpu(ev->handle), ev->status);
5698
5699 if (ev->status)
5700 return;
5701
5702 hci_dev_lock(hdev);
5703
5704 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5705 if (!hchan || !hchan->amp)
5706 goto unlock;
5707
5708 amp_destroy_logical_link(hchan, ev->reason);
5709
5710 unlock:
5711 hci_dev_unlock(hdev);
5712 }
5713
hci_disconn_phylink_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5714 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5715 struct sk_buff *skb)
5716 {
5717 struct hci_ev_disconn_phy_link_complete *ev = data;
5718 struct hci_conn *hcon;
5719
5720 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5721
5722 if (ev->status)
5723 return;
5724
5725 hci_dev_lock(hdev);
5726
5727 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5728 if (hcon && hcon->type == AMP_LINK) {
5729 hcon->state = BT_CLOSED;
5730 hci_disconn_cfm(hcon, ev->reason);
5731 hci_conn_del(hcon);
5732 }
5733
5734 hci_dev_unlock(hdev);
5735 }
5736 #endif
5737
le_conn_update_addr(struct hci_conn * conn,bdaddr_t * bdaddr,u8 bdaddr_type,bdaddr_t * local_rpa)5738 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5739 u8 bdaddr_type, bdaddr_t *local_rpa)
5740 {
5741 if (conn->out) {
5742 conn->dst_type = bdaddr_type;
5743 conn->resp_addr_type = bdaddr_type;
5744 bacpy(&conn->resp_addr, bdaddr);
5745
5746 /* Check if the controller has set a Local RPA then it must be
5747 * used instead or hdev->rpa.
5748 */
5749 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5750 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5751 bacpy(&conn->init_addr, local_rpa);
5752 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5753 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5754 bacpy(&conn->init_addr, &conn->hdev->rpa);
5755 } else {
5756 hci_copy_identity_address(conn->hdev, &conn->init_addr,
5757 &conn->init_addr_type);
5758 }
5759 } else {
5760 conn->resp_addr_type = conn->hdev->adv_addr_type;
5761 /* Check if the controller has set a Local RPA then it must be
5762 * used instead or hdev->rpa.
5763 */
5764 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5765 conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5766 bacpy(&conn->resp_addr, local_rpa);
5767 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5768 /* In case of ext adv, resp_addr will be updated in
5769 * Adv Terminated event.
5770 */
5771 if (!ext_adv_capable(conn->hdev))
5772 bacpy(&conn->resp_addr,
5773 &conn->hdev->random_addr);
5774 } else {
5775 bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5776 }
5777
5778 conn->init_addr_type = bdaddr_type;
5779 bacpy(&conn->init_addr, bdaddr);
5780
5781 /* For incoming connections, set the default minimum
5782 * and maximum connection interval. They will be used
5783 * to check if the parameters are in range and if not
5784 * trigger the connection update procedure.
5785 */
5786 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5787 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5788 }
5789 }
5790
le_conn_complete_evt(struct hci_dev * hdev,u8 status,bdaddr_t * bdaddr,u8 bdaddr_type,bdaddr_t * local_rpa,u8 role,u16 handle,u16 interval,u16 latency,u16 supervision_timeout)5791 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5792 bdaddr_t *bdaddr, u8 bdaddr_type,
5793 bdaddr_t *local_rpa, u8 role, u16 handle,
5794 u16 interval, u16 latency,
5795 u16 supervision_timeout)
5796 {
5797 struct hci_conn_params *params;
5798 struct hci_conn *conn;
5799 struct smp_irk *irk;
5800 u8 addr_type;
5801
5802 hci_dev_lock(hdev);
5803
5804 /* All controllers implicitly stop advertising in the event of a
5805 * connection, so ensure that the state bit is cleared.
5806 */
5807 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5808
5809 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5810 if (!conn) {
5811 /* In case of error status and there is no connection pending
5812 * just unlock as there is nothing to cleanup.
5813 */
5814 if (status)
5815 goto unlock;
5816
5817 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5818 if (!conn) {
5819 bt_dev_err(hdev, "no memory for new connection");
5820 goto unlock;
5821 }
5822
5823 conn->dst_type = bdaddr_type;
5824
5825 /* If we didn't have a hci_conn object previously
5826 * but we're in central role this must be something
5827 * initiated using an accept list. Since accept list based
5828 * connections are not "first class citizens" we don't
5829 * have full tracking of them. Therefore, we go ahead
5830 * with a "best effort" approach of determining the
5831 * initiator address based on the HCI_PRIVACY flag.
5832 */
5833 if (conn->out) {
5834 conn->resp_addr_type = bdaddr_type;
5835 bacpy(&conn->resp_addr, bdaddr);
5836 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5837 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5838 bacpy(&conn->init_addr, &hdev->rpa);
5839 } else {
5840 hci_copy_identity_address(hdev,
5841 &conn->init_addr,
5842 &conn->init_addr_type);
5843 }
5844 }
5845 } else {
5846 cancel_delayed_work(&conn->le_conn_timeout);
5847 }
5848
5849 /* The HCI_LE_Connection_Complete event is only sent once per connection.
5850 * Processing it more than once per connection can corrupt kernel memory.
5851 *
5852 * As the connection handle is set here for the first time, it indicates
5853 * whether the connection is already set up.
5854 */
5855 if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5856 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5857 goto unlock;
5858 }
5859
5860 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5861
5862 /* Lookup the identity address from the stored connection
5863 * address and address type.
5864 *
5865 * When establishing connections to an identity address, the
5866 * connection procedure will store the resolvable random
5867 * address first. Now if it can be converted back into the
5868 * identity address, start using the identity address from
5869 * now on.
5870 */
5871 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5872 if (irk) {
5873 bacpy(&conn->dst, &irk->bdaddr);
5874 conn->dst_type = irk->addr_type;
5875 }
5876
5877 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5878
5879 if (handle > HCI_CONN_HANDLE_MAX) {
5880 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5881 HCI_CONN_HANDLE_MAX);
5882 status = HCI_ERROR_INVALID_PARAMETERS;
5883 }
5884
5885 /* All connection failure handling is taken care of by the
5886 * hci_conn_failed function which is triggered by the HCI
5887 * request completion callbacks used for connecting.
5888 */
5889 if (status)
5890 goto unlock;
5891
5892 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5893 addr_type = BDADDR_LE_PUBLIC;
5894 else
5895 addr_type = BDADDR_LE_RANDOM;
5896
5897 /* Drop the connection if the device is blocked */
5898 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5899 hci_conn_drop(conn);
5900 goto unlock;
5901 }
5902
5903 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5904 mgmt_device_connected(hdev, conn, NULL, 0);
5905
5906 conn->sec_level = BT_SECURITY_LOW;
5907 conn->handle = handle;
5908 conn->state = BT_CONFIG;
5909
5910 /* Store current advertising instance as connection advertising instance
5911 * when sotfware rotation is in use so it can be re-enabled when
5912 * disconnected.
5913 */
5914 if (!ext_adv_capable(hdev))
5915 conn->adv_instance = hdev->cur_adv_instance;
5916
5917 conn->le_conn_interval = interval;
5918 conn->le_conn_latency = latency;
5919 conn->le_supv_timeout = supervision_timeout;
5920
5921 hci_debugfs_create_conn(conn);
5922 hci_conn_add_sysfs(conn);
5923
5924 /* The remote features procedure is defined for central
5925 * role only. So only in case of an initiated connection
5926 * request the remote features.
5927 *
5928 * If the local controller supports peripheral-initiated features
5929 * exchange, then requesting the remote features in peripheral
5930 * role is possible. Otherwise just transition into the
5931 * connected state without requesting the remote features.
5932 */
5933 if (conn->out ||
5934 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5935 struct hci_cp_le_read_remote_features cp;
5936
5937 cp.handle = __cpu_to_le16(conn->handle);
5938
5939 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5940 sizeof(cp), &cp);
5941
5942 hci_conn_hold(conn);
5943 } else {
5944 conn->state = BT_CONNECTED;
5945 hci_connect_cfm(conn, status);
5946 }
5947
5948 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5949 conn->dst_type);
5950 if (params) {
5951 list_del_init(¶ms->action);
5952 if (params->conn) {
5953 hci_conn_drop(params->conn);
5954 hci_conn_put(params->conn);
5955 params->conn = NULL;
5956 }
5957 }
5958
5959 unlock:
5960 hci_update_passive_scan(hdev);
5961 hci_dev_unlock(hdev);
5962 }
5963
hci_le_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5964 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
5965 struct sk_buff *skb)
5966 {
5967 struct hci_ev_le_conn_complete *ev = data;
5968
5969 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5970
5971 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5972 NULL, ev->role, le16_to_cpu(ev->handle),
5973 le16_to_cpu(ev->interval),
5974 le16_to_cpu(ev->latency),
5975 le16_to_cpu(ev->supervision_timeout));
5976 }
5977
hci_le_enh_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5978 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
5979 struct sk_buff *skb)
5980 {
5981 struct hci_ev_le_enh_conn_complete *ev = data;
5982
5983 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5984
5985 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5986 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
5987 le16_to_cpu(ev->interval),
5988 le16_to_cpu(ev->latency),
5989 le16_to_cpu(ev->supervision_timeout));
5990 }
5991
hci_le_ext_adv_term_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5992 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
5993 struct sk_buff *skb)
5994 {
5995 struct hci_evt_le_ext_adv_set_term *ev = data;
5996 struct hci_conn *conn;
5997 struct adv_info *adv, *n;
5998
5999 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6000
6001 /* The Bluetooth Core 5.3 specification clearly states that this event
6002 * shall not be sent when the Host disables the advertising set. So in
6003 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6004 *
6005 * When the Host disables an advertising set, all cleanup is done via
6006 * its command callback and not needed to be duplicated here.
6007 */
6008 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6009 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6010 return;
6011 }
6012
6013 hci_dev_lock(hdev);
6014
6015 adv = hci_find_adv_instance(hdev, ev->handle);
6016
6017 if (ev->status) {
6018 if (!adv)
6019 goto unlock;
6020
6021 /* Remove advertising as it has been terminated */
6022 hci_remove_adv_instance(hdev, ev->handle);
6023 mgmt_advertising_removed(NULL, hdev, ev->handle);
6024
6025 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6026 if (adv->enabled)
6027 goto unlock;
6028 }
6029
6030 /* We are no longer advertising, clear HCI_LE_ADV */
6031 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6032 goto unlock;
6033 }
6034
6035 if (adv)
6036 adv->enabled = false;
6037
6038 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6039 if (conn) {
6040 /* Store handle in the connection so the correct advertising
6041 * instance can be re-enabled when disconnected.
6042 */
6043 conn->adv_instance = ev->handle;
6044
6045 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6046 bacmp(&conn->resp_addr, BDADDR_ANY))
6047 goto unlock;
6048
6049 if (!ev->handle) {
6050 bacpy(&conn->resp_addr, &hdev->random_addr);
6051 goto unlock;
6052 }
6053
6054 if (adv)
6055 bacpy(&conn->resp_addr, &adv->random_addr);
6056 }
6057
6058 unlock:
6059 hci_dev_unlock(hdev);
6060 }
6061
hci_le_conn_update_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6062 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6063 struct sk_buff *skb)
6064 {
6065 struct hci_ev_le_conn_update_complete *ev = data;
6066 struct hci_conn *conn;
6067
6068 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6069
6070 if (ev->status)
6071 return;
6072
6073 hci_dev_lock(hdev);
6074
6075 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6076 if (conn) {
6077 conn->le_conn_interval = le16_to_cpu(ev->interval);
6078 conn->le_conn_latency = le16_to_cpu(ev->latency);
6079 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6080 }
6081
6082 hci_dev_unlock(hdev);
6083 }
6084
6085 /* This function requires the caller holds hdev->lock */
check_pending_le_conn(struct hci_dev * hdev,bdaddr_t * addr,u8 addr_type,bool addr_resolved,u8 adv_type)6086 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6087 bdaddr_t *addr,
6088 u8 addr_type, bool addr_resolved,
6089 u8 adv_type)
6090 {
6091 struct hci_conn *conn;
6092 struct hci_conn_params *params;
6093
6094 /* If the event is not connectable don't proceed further */
6095 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6096 return NULL;
6097
6098 /* Ignore if the device is blocked or hdev is suspended */
6099 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6100 hdev->suspended)
6101 return NULL;
6102
6103 /* Most controller will fail if we try to create new connections
6104 * while we have an existing one in peripheral role.
6105 */
6106 if (hdev->conn_hash.le_num_peripheral > 0 &&
6107 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6108 !(hdev->le_states[3] & 0x10)))
6109 return NULL;
6110
6111 /* If we're not connectable only connect devices that we have in
6112 * our pend_le_conns list.
6113 */
6114 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6115 addr_type);
6116 if (!params)
6117 return NULL;
6118
6119 if (!params->explicit_connect) {
6120 switch (params->auto_connect) {
6121 case HCI_AUTO_CONN_DIRECT:
6122 /* Only devices advertising with ADV_DIRECT_IND are
6123 * triggering a connection attempt. This is allowing
6124 * incoming connections from peripheral devices.
6125 */
6126 if (adv_type != LE_ADV_DIRECT_IND)
6127 return NULL;
6128 break;
6129 case HCI_AUTO_CONN_ALWAYS:
6130 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6131 * are triggering a connection attempt. This means
6132 * that incoming connections from peripheral device are
6133 * accepted and also outgoing connections to peripheral
6134 * devices are established when found.
6135 */
6136 break;
6137 default:
6138 return NULL;
6139 }
6140 }
6141
6142 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6143 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6144 HCI_ROLE_MASTER);
6145 if (!IS_ERR(conn)) {
6146 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6147 * by higher layer that tried to connect, if no then
6148 * store the pointer since we don't really have any
6149 * other owner of the object besides the params that
6150 * triggered it. This way we can abort the connection if
6151 * the parameters get removed and keep the reference
6152 * count consistent once the connection is established.
6153 */
6154
6155 if (!params->explicit_connect)
6156 params->conn = hci_conn_get(conn);
6157
6158 return conn;
6159 }
6160
6161 switch (PTR_ERR(conn)) {
6162 case -EBUSY:
6163 /* If hci_connect() returns -EBUSY it means there is already
6164 * an LE connection attempt going on. Since controllers don't
6165 * support more than one connection attempt at the time, we
6166 * don't consider this an error case.
6167 */
6168 break;
6169 default:
6170 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6171 return NULL;
6172 }
6173
6174 return NULL;
6175 }
6176
process_adv_report(struct hci_dev * hdev,u8 type,bdaddr_t * bdaddr,u8 bdaddr_type,bdaddr_t * direct_addr,u8 direct_addr_type,s8 rssi,u8 * data,u8 len,bool ext_adv,bool ctl_time,u64 instant)6177 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6178 u8 bdaddr_type, bdaddr_t *direct_addr,
6179 u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6180 bool ext_adv, bool ctl_time, u64 instant)
6181 {
6182 struct discovery_state *d = &hdev->discovery;
6183 struct smp_irk *irk;
6184 struct hci_conn *conn;
6185 bool match, bdaddr_resolved;
6186 u32 flags;
6187 u8 *ptr;
6188
6189 switch (type) {
6190 case LE_ADV_IND:
6191 case LE_ADV_DIRECT_IND:
6192 case LE_ADV_SCAN_IND:
6193 case LE_ADV_NONCONN_IND:
6194 case LE_ADV_SCAN_RSP:
6195 break;
6196 default:
6197 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6198 "type: 0x%02x", type);
6199 return;
6200 }
6201
6202 if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6203 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6204 return;
6205 }
6206
6207 /* Find the end of the data in case the report contains padded zero
6208 * bytes at the end causing an invalid length value.
6209 *
6210 * When data is NULL, len is 0 so there is no need for extra ptr
6211 * check as 'ptr < data + 0' is already false in such case.
6212 */
6213 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6214 if (ptr + 1 + *ptr > data + len)
6215 break;
6216 }
6217
6218 /* Adjust for actual length. This handles the case when remote
6219 * device is advertising with incorrect data length.
6220 */
6221 len = ptr - data;
6222
6223 /* If the direct address is present, then this report is from
6224 * a LE Direct Advertising Report event. In that case it is
6225 * important to see if the address is matching the local
6226 * controller address.
6227 */
6228 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6229 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6230 &bdaddr_resolved);
6231
6232 /* Only resolvable random addresses are valid for these
6233 * kind of reports and others can be ignored.
6234 */
6235 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6236 return;
6237
6238 /* If the controller is not using resolvable random
6239 * addresses, then this report can be ignored.
6240 */
6241 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6242 return;
6243
6244 /* If the local IRK of the controller does not match
6245 * with the resolvable random address provided, then
6246 * this report can be ignored.
6247 */
6248 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6249 return;
6250 }
6251
6252 /* Check if we need to convert to identity address */
6253 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6254 if (irk) {
6255 bdaddr = &irk->bdaddr;
6256 bdaddr_type = irk->addr_type;
6257 }
6258
6259 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6260
6261 /* Check if we have been requested to connect to this device.
6262 *
6263 * direct_addr is set only for directed advertising reports (it is NULL
6264 * for advertising reports) and is already verified to be RPA above.
6265 */
6266 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6267 type);
6268 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6269 /* Store report for later inclusion by
6270 * mgmt_device_connected
6271 */
6272 memcpy(conn->le_adv_data, data, len);
6273 conn->le_adv_data_len = len;
6274 }
6275
6276 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6277 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6278 else
6279 flags = 0;
6280
6281 /* All scan results should be sent up for Mesh systems */
6282 if (hci_dev_test_flag(hdev, HCI_MESH)) {
6283 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6284 rssi, flags, data, len, NULL, 0, instant);
6285 return;
6286 }
6287
6288 /* Passive scanning shouldn't trigger any device found events,
6289 * except for devices marked as CONN_REPORT for which we do send
6290 * device found events, or advertisement monitoring requested.
6291 */
6292 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6293 if (type == LE_ADV_DIRECT_IND)
6294 return;
6295
6296 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6297 bdaddr, bdaddr_type) &&
6298 idr_is_empty(&hdev->adv_monitors_idr))
6299 return;
6300
6301 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6302 rssi, flags, data, len, NULL, 0, 0);
6303 return;
6304 }
6305
6306 /* When receiving non-connectable or scannable undirected
6307 * advertising reports, this means that the remote device is
6308 * not connectable and then clearly indicate this in the
6309 * device found event.
6310 *
6311 * When receiving a scan response, then there is no way to
6312 * know if the remote device is connectable or not. However
6313 * since scan responses are merged with a previously seen
6314 * advertising report, the flags field from that report
6315 * will be used.
6316 *
6317 * In the really unlikely case that a controller get confused
6318 * and just sends a scan response event, then it is marked as
6319 * not connectable as well.
6320 */
6321 if (type == LE_ADV_SCAN_RSP)
6322 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6323
6324 /* If there's nothing pending either store the data from this
6325 * event or send an immediate device found event if the data
6326 * should not be stored for later.
6327 */
6328 if (!ext_adv && !has_pending_adv_report(hdev)) {
6329 /* If the report will trigger a SCAN_REQ store it for
6330 * later merging.
6331 */
6332 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6333 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6334 rssi, flags, data, len);
6335 return;
6336 }
6337
6338 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6339 rssi, flags, data, len, NULL, 0, 0);
6340 return;
6341 }
6342
6343 /* Check if the pending report is for the same device as the new one */
6344 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6345 bdaddr_type == d->last_adv_addr_type);
6346
6347 /* If the pending data doesn't match this report or this isn't a
6348 * scan response (e.g. we got a duplicate ADV_IND) then force
6349 * sending of the pending data.
6350 */
6351 if (type != LE_ADV_SCAN_RSP || !match) {
6352 /* Send out whatever is in the cache, but skip duplicates */
6353 if (!match)
6354 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6355 d->last_adv_addr_type, NULL,
6356 d->last_adv_rssi, d->last_adv_flags,
6357 d->last_adv_data,
6358 d->last_adv_data_len, NULL, 0, 0);
6359
6360 /* If the new report will trigger a SCAN_REQ store it for
6361 * later merging.
6362 */
6363 if (!ext_adv && (type == LE_ADV_IND ||
6364 type == LE_ADV_SCAN_IND)) {
6365 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6366 rssi, flags, data, len);
6367 return;
6368 }
6369
6370 /* The advertising reports cannot be merged, so clear
6371 * the pending report and send out a device found event.
6372 */
6373 clear_pending_adv_report(hdev);
6374 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6375 rssi, flags, data, len, NULL, 0, 0);
6376 return;
6377 }
6378
6379 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6380 * the new event is a SCAN_RSP. We can therefore proceed with
6381 * sending a merged device found event.
6382 */
6383 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6384 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6385 d->last_adv_data, d->last_adv_data_len, data, len, 0);
6386 clear_pending_adv_report(hdev);
6387 }
6388
hci_le_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6389 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6390 struct sk_buff *skb)
6391 {
6392 struct hci_ev_le_advertising_report *ev = data;
6393 u64 instant = jiffies;
6394
6395 if (!ev->num)
6396 return;
6397
6398 hci_dev_lock(hdev);
6399
6400 while (ev->num--) {
6401 struct hci_ev_le_advertising_info *info;
6402 s8 rssi;
6403
6404 info = hci_le_ev_skb_pull(hdev, skb,
6405 HCI_EV_LE_ADVERTISING_REPORT,
6406 sizeof(*info));
6407 if (!info)
6408 break;
6409
6410 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6411 info->length + 1))
6412 break;
6413
6414 if (info->length <= HCI_MAX_AD_LENGTH) {
6415 rssi = info->data[info->length];
6416 process_adv_report(hdev, info->type, &info->bdaddr,
6417 info->bdaddr_type, NULL, 0, rssi,
6418 info->data, info->length, false,
6419 false, instant);
6420 } else {
6421 bt_dev_err(hdev, "Dropping invalid advertising data");
6422 }
6423 }
6424
6425 hci_dev_unlock(hdev);
6426 }
6427
ext_evt_type_to_legacy(struct hci_dev * hdev,u16 evt_type)6428 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6429 {
6430 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6431 switch (evt_type) {
6432 case LE_LEGACY_ADV_IND:
6433 return LE_ADV_IND;
6434 case LE_LEGACY_ADV_DIRECT_IND:
6435 return LE_ADV_DIRECT_IND;
6436 case LE_LEGACY_ADV_SCAN_IND:
6437 return LE_ADV_SCAN_IND;
6438 case LE_LEGACY_NONCONN_IND:
6439 return LE_ADV_NONCONN_IND;
6440 case LE_LEGACY_SCAN_RSP_ADV:
6441 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6442 return LE_ADV_SCAN_RSP;
6443 }
6444
6445 goto invalid;
6446 }
6447
6448 if (evt_type & LE_EXT_ADV_CONN_IND) {
6449 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6450 return LE_ADV_DIRECT_IND;
6451
6452 return LE_ADV_IND;
6453 }
6454
6455 if (evt_type & LE_EXT_ADV_SCAN_RSP)
6456 return LE_ADV_SCAN_RSP;
6457
6458 if (evt_type & LE_EXT_ADV_SCAN_IND)
6459 return LE_ADV_SCAN_IND;
6460
6461 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6462 evt_type & LE_EXT_ADV_DIRECT_IND)
6463 return LE_ADV_NONCONN_IND;
6464
6465 invalid:
6466 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6467 evt_type);
6468
6469 return LE_ADV_INVALID;
6470 }
6471
hci_le_ext_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6472 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6473 struct sk_buff *skb)
6474 {
6475 struct hci_ev_le_ext_adv_report *ev = data;
6476 u64 instant = jiffies;
6477
6478 if (!ev->num)
6479 return;
6480
6481 hci_dev_lock(hdev);
6482
6483 while (ev->num--) {
6484 struct hci_ev_le_ext_adv_info *info;
6485 u8 legacy_evt_type;
6486 u16 evt_type;
6487
6488 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6489 sizeof(*info));
6490 if (!info)
6491 break;
6492
6493 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6494 info->length))
6495 break;
6496
6497 evt_type = __le16_to_cpu(info->type);
6498 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6499 if (legacy_evt_type != LE_ADV_INVALID) {
6500 process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6501 info->bdaddr_type, NULL, 0,
6502 info->rssi, info->data, info->length,
6503 !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6504 false, instant);
6505 }
6506 }
6507
6508 hci_dev_unlock(hdev);
6509 }
6510
hci_le_pa_term_sync(struct hci_dev * hdev,__le16 handle)6511 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6512 {
6513 struct hci_cp_le_pa_term_sync cp;
6514
6515 memset(&cp, 0, sizeof(cp));
6516 cp.handle = handle;
6517
6518 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6519 }
6520
hci_le_pa_sync_estabilished_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6521 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6522 struct sk_buff *skb)
6523 {
6524 struct hci_ev_le_pa_sync_established *ev = data;
6525 int mask = hdev->link_mode;
6526 __u8 flags = 0;
6527
6528 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6529
6530 if (ev->status)
6531 return;
6532
6533 hci_dev_lock(hdev);
6534
6535 hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6536
6537 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6538 if (!(mask & HCI_LM_ACCEPT))
6539 hci_le_pa_term_sync(hdev, ev->handle);
6540
6541 hci_dev_unlock(hdev);
6542 }
6543
hci_le_remote_feat_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6544 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6545 struct sk_buff *skb)
6546 {
6547 struct hci_ev_le_remote_feat_complete *ev = data;
6548 struct hci_conn *conn;
6549
6550 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6551
6552 hci_dev_lock(hdev);
6553
6554 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6555 if (conn) {
6556 if (!ev->status)
6557 memcpy(conn->features[0], ev->features, 8);
6558
6559 if (conn->state == BT_CONFIG) {
6560 __u8 status;
6561
6562 /* If the local controller supports peripheral-initiated
6563 * features exchange, but the remote controller does
6564 * not, then it is possible that the error code 0x1a
6565 * for unsupported remote feature gets returned.
6566 *
6567 * In this specific case, allow the connection to
6568 * transition into connected state and mark it as
6569 * successful.
6570 */
6571 if (!conn->out && ev->status == 0x1a &&
6572 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6573 status = 0x00;
6574 else
6575 status = ev->status;
6576
6577 conn->state = BT_CONNECTED;
6578 hci_connect_cfm(conn, status);
6579 hci_conn_drop(conn);
6580 }
6581 }
6582
6583 hci_dev_unlock(hdev);
6584 }
6585
hci_le_ltk_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6586 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6587 struct sk_buff *skb)
6588 {
6589 struct hci_ev_le_ltk_req *ev = data;
6590 struct hci_cp_le_ltk_reply cp;
6591 struct hci_cp_le_ltk_neg_reply neg;
6592 struct hci_conn *conn;
6593 struct smp_ltk *ltk;
6594
6595 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6596
6597 hci_dev_lock(hdev);
6598
6599 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6600 if (conn == NULL)
6601 goto not_found;
6602
6603 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6604 if (!ltk)
6605 goto not_found;
6606
6607 if (smp_ltk_is_sc(ltk)) {
6608 /* With SC both EDiv and Rand are set to zero */
6609 if (ev->ediv || ev->rand)
6610 goto not_found;
6611 } else {
6612 /* For non-SC keys check that EDiv and Rand match */
6613 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6614 goto not_found;
6615 }
6616
6617 memcpy(cp.ltk, ltk->val, ltk->enc_size);
6618 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6619 cp.handle = cpu_to_le16(conn->handle);
6620
6621 conn->pending_sec_level = smp_ltk_sec_level(ltk);
6622
6623 conn->enc_key_size = ltk->enc_size;
6624
6625 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6626
6627 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6628 * temporary key used to encrypt a connection following
6629 * pairing. It is used during the Encrypted Session Setup to
6630 * distribute the keys. Later, security can be re-established
6631 * using a distributed LTK.
6632 */
6633 if (ltk->type == SMP_STK) {
6634 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6635 list_del_rcu(<k->list);
6636 kfree_rcu(ltk, rcu);
6637 } else {
6638 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6639 }
6640
6641 hci_dev_unlock(hdev);
6642
6643 return;
6644
6645 not_found:
6646 neg.handle = ev->handle;
6647 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6648 hci_dev_unlock(hdev);
6649 }
6650
send_conn_param_neg_reply(struct hci_dev * hdev,u16 handle,u8 reason)6651 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6652 u8 reason)
6653 {
6654 struct hci_cp_le_conn_param_req_neg_reply cp;
6655
6656 cp.handle = cpu_to_le16(handle);
6657 cp.reason = reason;
6658
6659 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6660 &cp);
6661 }
6662
hci_le_remote_conn_param_req_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6663 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6664 struct sk_buff *skb)
6665 {
6666 struct hci_ev_le_remote_conn_param_req *ev = data;
6667 struct hci_cp_le_conn_param_req_reply cp;
6668 struct hci_conn *hcon;
6669 u16 handle, min, max, latency, timeout;
6670
6671 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6672
6673 handle = le16_to_cpu(ev->handle);
6674 min = le16_to_cpu(ev->interval_min);
6675 max = le16_to_cpu(ev->interval_max);
6676 latency = le16_to_cpu(ev->latency);
6677 timeout = le16_to_cpu(ev->timeout);
6678
6679 hcon = hci_conn_hash_lookup_handle(hdev, handle);
6680 if (!hcon || hcon->state != BT_CONNECTED)
6681 return send_conn_param_neg_reply(hdev, handle,
6682 HCI_ERROR_UNKNOWN_CONN_ID);
6683
6684 if (hci_check_conn_params(min, max, latency, timeout))
6685 return send_conn_param_neg_reply(hdev, handle,
6686 HCI_ERROR_INVALID_LL_PARAMS);
6687
6688 if (hcon->role == HCI_ROLE_MASTER) {
6689 struct hci_conn_params *params;
6690 u8 store_hint;
6691
6692 hci_dev_lock(hdev);
6693
6694 params = hci_conn_params_lookup(hdev, &hcon->dst,
6695 hcon->dst_type);
6696 if (params) {
6697 params->conn_min_interval = min;
6698 params->conn_max_interval = max;
6699 params->conn_latency = latency;
6700 params->supervision_timeout = timeout;
6701 store_hint = 0x01;
6702 } else {
6703 store_hint = 0x00;
6704 }
6705
6706 hci_dev_unlock(hdev);
6707
6708 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6709 store_hint, min, max, latency, timeout);
6710 }
6711
6712 cp.handle = ev->handle;
6713 cp.interval_min = ev->interval_min;
6714 cp.interval_max = ev->interval_max;
6715 cp.latency = ev->latency;
6716 cp.timeout = ev->timeout;
6717 cp.min_ce_len = 0;
6718 cp.max_ce_len = 0;
6719
6720 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6721 }
6722
hci_le_direct_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6723 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6724 struct sk_buff *skb)
6725 {
6726 struct hci_ev_le_direct_adv_report *ev = data;
6727 u64 instant = jiffies;
6728 int i;
6729
6730 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6731 flex_array_size(ev, info, ev->num)))
6732 return;
6733
6734 if (!ev->num)
6735 return;
6736
6737 hci_dev_lock(hdev);
6738
6739 for (i = 0; i < ev->num; i++) {
6740 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6741
6742 process_adv_report(hdev, info->type, &info->bdaddr,
6743 info->bdaddr_type, &info->direct_addr,
6744 info->direct_addr_type, info->rssi, NULL, 0,
6745 false, false, instant);
6746 }
6747
6748 hci_dev_unlock(hdev);
6749 }
6750
hci_le_phy_update_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6751 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6752 struct sk_buff *skb)
6753 {
6754 struct hci_ev_le_phy_update_complete *ev = data;
6755 struct hci_conn *conn;
6756
6757 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6758
6759 if (ev->status)
6760 return;
6761
6762 hci_dev_lock(hdev);
6763
6764 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6765 if (!conn)
6766 goto unlock;
6767
6768 conn->le_tx_phy = ev->tx_phy;
6769 conn->le_rx_phy = ev->rx_phy;
6770
6771 unlock:
6772 hci_dev_unlock(hdev);
6773 }
6774
hci_le_cis_estabilished_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6775 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6776 struct sk_buff *skb)
6777 {
6778 struct hci_evt_le_cis_established *ev = data;
6779 struct hci_conn *conn;
6780 u16 handle = __le16_to_cpu(ev->handle);
6781
6782 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6783
6784 hci_dev_lock(hdev);
6785
6786 conn = hci_conn_hash_lookup_handle(hdev, handle);
6787 if (!conn) {
6788 bt_dev_err(hdev,
6789 "Unable to find connection with handle 0x%4.4x",
6790 handle);
6791 goto unlock;
6792 }
6793
6794 if (conn->type != ISO_LINK) {
6795 bt_dev_err(hdev,
6796 "Invalid connection link type handle 0x%4.4x",
6797 handle);
6798 goto unlock;
6799 }
6800
6801 if (conn->role == HCI_ROLE_SLAVE) {
6802 __le32 interval;
6803
6804 memset(&interval, 0, sizeof(interval));
6805
6806 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
6807 conn->iso_qos.in.interval = le32_to_cpu(interval);
6808 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
6809 conn->iso_qos.out.interval = le32_to_cpu(interval);
6810 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
6811 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
6812 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
6813 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
6814 conn->iso_qos.in.phy = ev->c_phy;
6815 conn->iso_qos.out.phy = ev->p_phy;
6816 }
6817
6818 if (!ev->status) {
6819 conn->state = BT_CONNECTED;
6820 hci_debugfs_create_conn(conn);
6821 hci_conn_add_sysfs(conn);
6822 hci_iso_setup_path(conn);
6823 goto unlock;
6824 }
6825
6826 hci_connect_cfm(conn, ev->status);
6827 hci_conn_del(conn);
6828
6829 unlock:
6830 hci_dev_unlock(hdev);
6831 }
6832
hci_le_reject_cis(struct hci_dev * hdev,__le16 handle)6833 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6834 {
6835 struct hci_cp_le_reject_cis cp;
6836
6837 memset(&cp, 0, sizeof(cp));
6838 cp.handle = handle;
6839 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6840 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6841 }
6842
hci_le_accept_cis(struct hci_dev * hdev,__le16 handle)6843 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6844 {
6845 struct hci_cp_le_accept_cis cp;
6846
6847 memset(&cp, 0, sizeof(cp));
6848 cp.handle = handle;
6849 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6850 }
6851
hci_le_cis_req_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6852 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6853 struct sk_buff *skb)
6854 {
6855 struct hci_evt_le_cis_req *ev = data;
6856 u16 acl_handle, cis_handle;
6857 struct hci_conn *acl, *cis;
6858 int mask;
6859 __u8 flags = 0;
6860
6861 acl_handle = __le16_to_cpu(ev->acl_handle);
6862 cis_handle = __le16_to_cpu(ev->cis_handle);
6863
6864 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6865 acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6866
6867 hci_dev_lock(hdev);
6868
6869 acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6870 if (!acl)
6871 goto unlock;
6872
6873 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6874 if (!(mask & HCI_LM_ACCEPT)) {
6875 hci_le_reject_cis(hdev, ev->cis_handle);
6876 goto unlock;
6877 }
6878
6879 cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6880 if (!cis) {
6881 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6882 if (!cis) {
6883 hci_le_reject_cis(hdev, ev->cis_handle);
6884 goto unlock;
6885 }
6886 cis->handle = cis_handle;
6887 }
6888
6889 cis->iso_qos.cig = ev->cig_id;
6890 cis->iso_qos.cis = ev->cis_id;
6891
6892 if (!(flags & HCI_PROTO_DEFER)) {
6893 hci_le_accept_cis(hdev, ev->cis_handle);
6894 } else {
6895 cis->state = BT_CONNECT2;
6896 hci_connect_cfm(cis, 0);
6897 }
6898
6899 unlock:
6900 hci_dev_unlock(hdev);
6901 }
6902
hci_le_create_big_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6903 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6904 struct sk_buff *skb)
6905 {
6906 struct hci_evt_le_create_big_complete *ev = data;
6907 struct hci_conn *conn;
6908
6909 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6910
6911 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6912 flex_array_size(ev, bis_handle, ev->num_bis)))
6913 return;
6914
6915 hci_dev_lock(hdev);
6916
6917 conn = hci_conn_hash_lookup_big(hdev, ev->handle);
6918 if (!conn)
6919 goto unlock;
6920
6921 if (conn->type != ISO_LINK) {
6922 bt_dev_err(hdev,
6923 "Invalid connection link type handle 0x%2.2x",
6924 ev->handle);
6925 goto unlock;
6926 }
6927
6928 if (ev->num_bis)
6929 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
6930
6931 if (!ev->status) {
6932 conn->state = BT_CONNECTED;
6933 hci_debugfs_create_conn(conn);
6934 hci_conn_add_sysfs(conn);
6935 hci_iso_setup_path(conn);
6936 goto unlock;
6937 }
6938
6939 hci_connect_cfm(conn, ev->status);
6940 hci_conn_del(conn);
6941
6942 unlock:
6943 hci_dev_unlock(hdev);
6944 }
6945
hci_le_big_sync_established_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6946 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
6947 struct sk_buff *skb)
6948 {
6949 struct hci_evt_le_big_sync_estabilished *ev = data;
6950 struct hci_conn *bis;
6951 int i;
6952
6953 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6954
6955 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
6956 flex_array_size(ev, bis, ev->num_bis)))
6957 return;
6958
6959 if (ev->status)
6960 return;
6961
6962 hci_dev_lock(hdev);
6963
6964 for (i = 0; i < ev->num_bis; i++) {
6965 u16 handle = le16_to_cpu(ev->bis[i]);
6966 __le32 interval;
6967
6968 bis = hci_conn_hash_lookup_handle(hdev, handle);
6969 if (!bis) {
6970 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
6971 HCI_ROLE_SLAVE);
6972 if (!bis)
6973 continue;
6974 bis->handle = handle;
6975 }
6976
6977 bis->iso_qos.big = ev->handle;
6978 memset(&interval, 0, sizeof(interval));
6979 memcpy(&interval, ev->latency, sizeof(ev->latency));
6980 bis->iso_qos.in.interval = le32_to_cpu(interval);
6981 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
6982 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
6983 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
6984
6985 hci_connect_cfm(bis, ev->status);
6986 }
6987
6988 hci_dev_unlock(hdev);
6989 }
6990
hci_le_big_info_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6991 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
6992 struct sk_buff *skb)
6993 {
6994 struct hci_evt_le_big_info_adv_report *ev = data;
6995 int mask = hdev->link_mode;
6996 __u8 flags = 0;
6997
6998 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6999
7000 hci_dev_lock(hdev);
7001
7002 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7003 if (!(mask & HCI_LM_ACCEPT))
7004 hci_le_pa_term_sync(hdev, ev->sync_handle);
7005
7006 hci_dev_unlock(hdev);
7007 }
7008
7009 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7010 [_op] = { \
7011 .func = _func, \
7012 .min_len = _min_len, \
7013 .max_len = _max_len, \
7014 }
7015
7016 #define HCI_LE_EV(_op, _func, _len) \
7017 HCI_LE_EV_VL(_op, _func, _len, _len)
7018
7019 #define HCI_LE_EV_STATUS(_op, _func) \
7020 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7021
7022 /* Entries in this table shall have their position according to the subevent
7023 * opcode they handle so the use of the macros above is recommend since it does
7024 * attempt to initialize at its proper index using Designated Initializers that
7025 * way events without a callback function can be ommited.
7026 */
7027 static const struct hci_le_ev {
7028 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7029 u16 min_len;
7030 u16 max_len;
7031 } hci_le_ev_table[U8_MAX + 1] = {
7032 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7033 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7034 sizeof(struct hci_ev_le_conn_complete)),
7035 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7036 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7037 sizeof(struct hci_ev_le_advertising_report),
7038 HCI_MAX_EVENT_SIZE),
7039 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7040 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7041 hci_le_conn_update_complete_evt,
7042 sizeof(struct hci_ev_le_conn_update_complete)),
7043 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7044 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7045 hci_le_remote_feat_complete_evt,
7046 sizeof(struct hci_ev_le_remote_feat_complete)),
7047 /* [0x05 = HCI_EV_LE_LTK_REQ] */
7048 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7049 sizeof(struct hci_ev_le_ltk_req)),
7050 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7051 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7052 hci_le_remote_conn_param_req_evt,
7053 sizeof(struct hci_ev_le_remote_conn_param_req)),
7054 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7055 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7056 hci_le_enh_conn_complete_evt,
7057 sizeof(struct hci_ev_le_enh_conn_complete)),
7058 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7059 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7060 sizeof(struct hci_ev_le_direct_adv_report),
7061 HCI_MAX_EVENT_SIZE),
7062 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7063 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7064 sizeof(struct hci_ev_le_phy_update_complete)),
7065 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7066 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7067 sizeof(struct hci_ev_le_ext_adv_report),
7068 HCI_MAX_EVENT_SIZE),
7069 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7070 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7071 hci_le_pa_sync_estabilished_evt,
7072 sizeof(struct hci_ev_le_pa_sync_established)),
7073 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7074 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7075 sizeof(struct hci_evt_le_ext_adv_set_term)),
7076 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7077 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7078 sizeof(struct hci_evt_le_cis_established)),
7079 /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7080 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7081 sizeof(struct hci_evt_le_cis_req)),
7082 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7083 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7084 hci_le_create_big_complete_evt,
7085 sizeof(struct hci_evt_le_create_big_complete),
7086 HCI_MAX_EVENT_SIZE),
7087 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7088 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7089 hci_le_big_sync_established_evt,
7090 sizeof(struct hci_evt_le_big_sync_estabilished),
7091 HCI_MAX_EVENT_SIZE),
7092 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7093 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7094 hci_le_big_info_adv_report_evt,
7095 sizeof(struct hci_evt_le_big_info_adv_report),
7096 HCI_MAX_EVENT_SIZE),
7097 };
7098
hci_le_meta_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb,u16 * opcode,u8 * status,hci_req_complete_t * req_complete,hci_req_complete_skb_t * req_complete_skb)7099 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7100 struct sk_buff *skb, u16 *opcode, u8 *status,
7101 hci_req_complete_t *req_complete,
7102 hci_req_complete_skb_t *req_complete_skb)
7103 {
7104 struct hci_ev_le_meta *ev = data;
7105 const struct hci_le_ev *subev;
7106
7107 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7108
7109 /* Only match event if command OGF is for LE */
7110 if (hdev->sent_cmd &&
7111 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7112 hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7113 *opcode = hci_skb_opcode(hdev->sent_cmd);
7114 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7115 req_complete_skb);
7116 }
7117
7118 subev = &hci_le_ev_table[ev->subevent];
7119 if (!subev->func)
7120 return;
7121
7122 if (skb->len < subev->min_len) {
7123 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7124 ev->subevent, skb->len, subev->min_len);
7125 return;
7126 }
7127
7128 /* Just warn if the length is over max_len size it still be
7129 * possible to partially parse the event so leave to callback to
7130 * decide if that is acceptable.
7131 */
7132 if (skb->len > subev->max_len)
7133 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7134 ev->subevent, skb->len, subev->max_len);
7135 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7136 if (!data)
7137 return;
7138
7139 subev->func(hdev, data, skb);
7140 }
7141
hci_get_cmd_complete(struct hci_dev * hdev,u16 opcode,u8 event,struct sk_buff * skb)7142 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7143 u8 event, struct sk_buff *skb)
7144 {
7145 struct hci_ev_cmd_complete *ev;
7146 struct hci_event_hdr *hdr;
7147
7148 if (!skb)
7149 return false;
7150
7151 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7152 if (!hdr)
7153 return false;
7154
7155 if (event) {
7156 if (hdr->evt != event)
7157 return false;
7158 return true;
7159 }
7160
7161 /* Check if request ended in Command Status - no way to retrieve
7162 * any extra parameters in this case.
7163 */
7164 if (hdr->evt == HCI_EV_CMD_STATUS)
7165 return false;
7166
7167 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7168 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7169 hdr->evt);
7170 return false;
7171 }
7172
7173 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7174 if (!ev)
7175 return false;
7176
7177 if (opcode != __le16_to_cpu(ev->opcode)) {
7178 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7179 __le16_to_cpu(ev->opcode));
7180 return false;
7181 }
7182
7183 return true;
7184 }
7185
hci_store_wake_reason(struct hci_dev * hdev,u8 event,struct sk_buff * skb)7186 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7187 struct sk_buff *skb)
7188 {
7189 struct hci_ev_le_advertising_info *adv;
7190 struct hci_ev_le_direct_adv_info *direct_adv;
7191 struct hci_ev_le_ext_adv_info *ext_adv;
7192 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7193 const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7194
7195 hci_dev_lock(hdev);
7196
7197 /* If we are currently suspended and this is the first BT event seen,
7198 * save the wake reason associated with the event.
7199 */
7200 if (!hdev->suspended || hdev->wake_reason)
7201 goto unlock;
7202
7203 /* Default to remote wake. Values for wake_reason are documented in the
7204 * Bluez mgmt api docs.
7205 */
7206 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7207
7208 /* Once configured for remote wakeup, we should only wake up for
7209 * reconnections. It's useful to see which device is waking us up so
7210 * keep track of the bdaddr of the connection event that woke us up.
7211 */
7212 if (event == HCI_EV_CONN_REQUEST) {
7213 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7214 hdev->wake_addr_type = BDADDR_BREDR;
7215 } else if (event == HCI_EV_CONN_COMPLETE) {
7216 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7217 hdev->wake_addr_type = BDADDR_BREDR;
7218 } else if (event == HCI_EV_LE_META) {
7219 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7220 u8 subevent = le_ev->subevent;
7221 u8 *ptr = &skb->data[sizeof(*le_ev)];
7222 u8 num_reports = *ptr;
7223
7224 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7225 subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7226 subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7227 num_reports) {
7228 adv = (void *)(ptr + 1);
7229 direct_adv = (void *)(ptr + 1);
7230 ext_adv = (void *)(ptr + 1);
7231
7232 switch (subevent) {
7233 case HCI_EV_LE_ADVERTISING_REPORT:
7234 bacpy(&hdev->wake_addr, &adv->bdaddr);
7235 hdev->wake_addr_type = adv->bdaddr_type;
7236 break;
7237 case HCI_EV_LE_DIRECT_ADV_REPORT:
7238 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7239 hdev->wake_addr_type = direct_adv->bdaddr_type;
7240 break;
7241 case HCI_EV_LE_EXT_ADV_REPORT:
7242 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7243 hdev->wake_addr_type = ext_adv->bdaddr_type;
7244 break;
7245 }
7246 }
7247 } else {
7248 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7249 }
7250
7251 unlock:
7252 hci_dev_unlock(hdev);
7253 }
7254
7255 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7256 [_op] = { \
7257 .req = false, \
7258 .func = _func, \
7259 .min_len = _min_len, \
7260 .max_len = _max_len, \
7261 }
7262
7263 #define HCI_EV(_op, _func, _len) \
7264 HCI_EV_VL(_op, _func, _len, _len)
7265
7266 #define HCI_EV_STATUS(_op, _func) \
7267 HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7268
7269 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7270 [_op] = { \
7271 .req = true, \
7272 .func_req = _func, \
7273 .min_len = _min_len, \
7274 .max_len = _max_len, \
7275 }
7276
7277 #define HCI_EV_REQ(_op, _func, _len) \
7278 HCI_EV_REQ_VL(_op, _func, _len, _len)
7279
7280 /* Entries in this table shall have their position according to the event opcode
7281 * they handle so the use of the macros above is recommend since it does attempt
7282 * to initialize at its proper index using Designated Initializers that way
7283 * events without a callback function don't have entered.
7284 */
7285 static const struct hci_ev {
7286 bool req;
7287 union {
7288 void (*func)(struct hci_dev *hdev, void *data,
7289 struct sk_buff *skb);
7290 void (*func_req)(struct hci_dev *hdev, void *data,
7291 struct sk_buff *skb, u16 *opcode, u8 *status,
7292 hci_req_complete_t *req_complete,
7293 hci_req_complete_skb_t *req_complete_skb);
7294 };
7295 u16 min_len;
7296 u16 max_len;
7297 } hci_ev_table[U8_MAX + 1] = {
7298 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7299 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7300 /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7301 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7302 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7303 /* [0x03 = HCI_EV_CONN_COMPLETE] */
7304 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7305 sizeof(struct hci_ev_conn_complete)),
7306 /* [0x04 = HCI_EV_CONN_REQUEST] */
7307 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7308 sizeof(struct hci_ev_conn_request)),
7309 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7310 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7311 sizeof(struct hci_ev_disconn_complete)),
7312 /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7313 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7314 sizeof(struct hci_ev_auth_complete)),
7315 /* [0x07 = HCI_EV_REMOTE_NAME] */
7316 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7317 sizeof(struct hci_ev_remote_name)),
7318 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7319 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7320 sizeof(struct hci_ev_encrypt_change)),
7321 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7322 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7323 hci_change_link_key_complete_evt,
7324 sizeof(struct hci_ev_change_link_key_complete)),
7325 /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7326 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7327 sizeof(struct hci_ev_remote_features)),
7328 /* [0x0e = HCI_EV_CMD_COMPLETE] */
7329 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7330 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7331 /* [0x0f = HCI_EV_CMD_STATUS] */
7332 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7333 sizeof(struct hci_ev_cmd_status)),
7334 /* [0x10 = HCI_EV_CMD_STATUS] */
7335 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7336 sizeof(struct hci_ev_hardware_error)),
7337 /* [0x12 = HCI_EV_ROLE_CHANGE] */
7338 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7339 sizeof(struct hci_ev_role_change)),
7340 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7341 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7342 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7343 /* [0x14 = HCI_EV_MODE_CHANGE] */
7344 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7345 sizeof(struct hci_ev_mode_change)),
7346 /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7347 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7348 sizeof(struct hci_ev_pin_code_req)),
7349 /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7350 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7351 sizeof(struct hci_ev_link_key_req)),
7352 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7353 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7354 sizeof(struct hci_ev_link_key_notify)),
7355 /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7356 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7357 sizeof(struct hci_ev_clock_offset)),
7358 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7359 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7360 sizeof(struct hci_ev_pkt_type_change)),
7361 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7362 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7363 sizeof(struct hci_ev_pscan_rep_mode)),
7364 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7365 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7366 hci_inquiry_result_with_rssi_evt,
7367 sizeof(struct hci_ev_inquiry_result_rssi),
7368 HCI_MAX_EVENT_SIZE),
7369 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7370 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7371 sizeof(struct hci_ev_remote_ext_features)),
7372 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7373 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7374 sizeof(struct hci_ev_sync_conn_complete)),
7375 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7376 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7377 hci_extended_inquiry_result_evt,
7378 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7379 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7380 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7381 sizeof(struct hci_ev_key_refresh_complete)),
7382 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7383 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7384 sizeof(struct hci_ev_io_capa_request)),
7385 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7386 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7387 sizeof(struct hci_ev_io_capa_reply)),
7388 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7389 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7390 sizeof(struct hci_ev_user_confirm_req)),
7391 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7392 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7393 sizeof(struct hci_ev_user_passkey_req)),
7394 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7395 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7396 sizeof(struct hci_ev_remote_oob_data_request)),
7397 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7398 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7399 sizeof(struct hci_ev_simple_pair_complete)),
7400 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7401 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7402 sizeof(struct hci_ev_user_passkey_notify)),
7403 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7404 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7405 sizeof(struct hci_ev_keypress_notify)),
7406 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7407 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7408 sizeof(struct hci_ev_remote_host_features)),
7409 /* [0x3e = HCI_EV_LE_META] */
7410 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7411 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7412 #if IS_ENABLED(CONFIG_BT_HS)
7413 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7414 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7415 sizeof(struct hci_ev_phy_link_complete)),
7416 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7417 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7418 sizeof(struct hci_ev_channel_selected)),
7419 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7420 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7421 hci_disconn_loglink_complete_evt,
7422 sizeof(struct hci_ev_disconn_logical_link_complete)),
7423 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7424 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7425 sizeof(struct hci_ev_logical_link_complete)),
7426 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7427 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7428 hci_disconn_phylink_complete_evt,
7429 sizeof(struct hci_ev_disconn_phy_link_complete)),
7430 #endif
7431 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7432 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7433 sizeof(struct hci_ev_num_comp_blocks)),
7434 /* [0xff = HCI_EV_VENDOR] */
7435 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7436 };
7437
hci_event_func(struct hci_dev * hdev,u8 event,struct sk_buff * skb,u16 * opcode,u8 * status,hci_req_complete_t * req_complete,hci_req_complete_skb_t * req_complete_skb)7438 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7439 u16 *opcode, u8 *status,
7440 hci_req_complete_t *req_complete,
7441 hci_req_complete_skb_t *req_complete_skb)
7442 {
7443 const struct hci_ev *ev = &hci_ev_table[event];
7444 void *data;
7445
7446 if (!ev->func)
7447 return;
7448
7449 if (skb->len < ev->min_len) {
7450 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7451 event, skb->len, ev->min_len);
7452 return;
7453 }
7454
7455 /* Just warn if the length is over max_len size it still be
7456 * possible to partially parse the event so leave to callback to
7457 * decide if that is acceptable.
7458 */
7459 if (skb->len > ev->max_len)
7460 bt_dev_warn_ratelimited(hdev,
7461 "unexpected event 0x%2.2x length: %u > %u",
7462 event, skb->len, ev->max_len);
7463
7464 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7465 if (!data)
7466 return;
7467
7468 if (ev->req)
7469 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7470 req_complete_skb);
7471 else
7472 ev->func(hdev, data, skb);
7473 }
7474
hci_event_packet(struct hci_dev * hdev,struct sk_buff * skb)7475 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7476 {
7477 struct hci_event_hdr *hdr = (void *) skb->data;
7478 hci_req_complete_t req_complete = NULL;
7479 hci_req_complete_skb_t req_complete_skb = NULL;
7480 struct sk_buff *orig_skb = NULL;
7481 u8 status = 0, event, req_evt = 0;
7482 u16 opcode = HCI_OP_NOP;
7483
7484 if (skb->len < sizeof(*hdr)) {
7485 bt_dev_err(hdev, "Malformed HCI Event");
7486 goto done;
7487 }
7488
7489 kfree_skb(hdev->recv_event);
7490 hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7491
7492 event = hdr->evt;
7493 if (!event) {
7494 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7495 event);
7496 goto done;
7497 }
7498
7499 /* Only match event if command OGF is not for LE */
7500 if (hdev->sent_cmd &&
7501 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7502 hci_skb_event(hdev->sent_cmd) == event) {
7503 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7504 status, &req_complete, &req_complete_skb);
7505 req_evt = event;
7506 }
7507
7508 /* If it looks like we might end up having to call
7509 * req_complete_skb, store a pristine copy of the skb since the
7510 * various handlers may modify the original one through
7511 * skb_pull() calls, etc.
7512 */
7513 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7514 event == HCI_EV_CMD_COMPLETE)
7515 orig_skb = skb_clone(skb, GFP_KERNEL);
7516
7517 skb_pull(skb, HCI_EVENT_HDR_SIZE);
7518
7519 /* Store wake reason if we're suspended */
7520 hci_store_wake_reason(hdev, event, skb);
7521
7522 bt_dev_dbg(hdev, "event 0x%2.2x", event);
7523
7524 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7525 &req_complete_skb);
7526
7527 if (req_complete) {
7528 req_complete(hdev, status, opcode);
7529 } else if (req_complete_skb) {
7530 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7531 kfree_skb(orig_skb);
7532 orig_skb = NULL;
7533 }
7534 req_complete_skb(hdev, status, opcode, orig_skb);
7535 }
7536
7537 done:
7538 kfree_skb(orig_skb);
7539 kfree_skb(skb);
7540 hdev->stat.evt_rx++;
7541 }
7542
