1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 /* Bluetooth HCI event handling. */
27
28 #include <asm/unaligned.h>
29 #include <linux/crypto.h>
30 #include <crypto/algapi.h>
31
32 #include <net/bluetooth/bluetooth.h>
33 #include <net/bluetooth/hci_core.h>
34 #include <net/bluetooth/mgmt.h>
35
36 #include "hci_request.h"
37 #include "hci_debugfs.h"
38 #include "hci_codec.h"
39 #include "smp.h"
40 #include "msft.h"
41 #include "eir.h"
42
43 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
44 "\x00\x00\x00\x00\x00\x00\x00\x00"
45
46 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
47
48 /* Handle HCI Event packets */
49
hci_ev_skb_pull(struct hci_dev * hdev,struct sk_buff * skb,u8 ev,size_t len)50 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
51 u8 ev, size_t len)
52 {
53 void *data;
54
55 data = skb_pull_data(skb, len);
56 if (!data)
57 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
58
59 return data;
60 }
61
hci_cc_skb_pull(struct hci_dev * hdev,struct sk_buff * skb,u16 op,size_t len)62 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
63 u16 op, size_t len)
64 {
65 void *data;
66
67 data = skb_pull_data(skb, len);
68 if (!data)
69 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
70
71 return data;
72 }
73
hci_le_ev_skb_pull(struct hci_dev * hdev,struct sk_buff * skb,u8 ev,size_t len)74 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
75 u8 ev, size_t len)
76 {
77 void *data;
78
79 data = skb_pull_data(skb, len);
80 if (!data)
81 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
82
83 return data;
84 }
85
hci_cc_inquiry_cancel(struct hci_dev * hdev,void * data,struct sk_buff * skb)86 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
87 struct sk_buff *skb)
88 {
89 struct hci_ev_status *rp = data;
90
91 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
92
93 /* It is possible that we receive Inquiry Complete event right
94 * before we receive Inquiry Cancel Command Complete event, in
95 * which case the latter event should have status of Command
96 * Disallowed (0x0c). This should not be treated as error, since
97 * we actually achieve what Inquiry Cancel wants to achieve,
98 * which is to end the last Inquiry session.
99 */
100 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
101 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
102 rp->status = 0x00;
103 }
104
105 if (rp->status)
106 return rp->status;
107
108 clear_bit(HCI_INQUIRY, &hdev->flags);
109 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
110 wake_up_bit(&hdev->flags, HCI_INQUIRY);
111
112 hci_dev_lock(hdev);
113 /* Set discovery state to stopped if we're not doing LE active
114 * scanning.
115 */
116 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
117 hdev->le_scan_type != LE_SCAN_ACTIVE)
118 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
119 hci_dev_unlock(hdev);
120
121 hci_conn_check_pending(hdev);
122
123 return rp->status;
124 }
125
hci_cc_periodic_inq(struct hci_dev * hdev,void * data,struct sk_buff * skb)126 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
127 struct sk_buff *skb)
128 {
129 struct hci_ev_status *rp = data;
130
131 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
132
133 if (rp->status)
134 return rp->status;
135
136 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
137
138 return rp->status;
139 }
140
hci_cc_exit_periodic_inq(struct hci_dev * hdev,void * data,struct sk_buff * skb)141 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
142 struct sk_buff *skb)
143 {
144 struct hci_ev_status *rp = data;
145
146 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
147
148 if (rp->status)
149 return rp->status;
150
151 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
152
153 hci_conn_check_pending(hdev);
154
155 return rp->status;
156 }
157
hci_cc_remote_name_req_cancel(struct hci_dev * hdev,void * data,struct sk_buff * skb)158 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
159 struct sk_buff *skb)
160 {
161 struct hci_ev_status *rp = data;
162
163 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
164
165 return rp->status;
166 }
167
hci_cc_role_discovery(struct hci_dev * hdev,void * data,struct sk_buff * skb)168 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
169 struct sk_buff *skb)
170 {
171 struct hci_rp_role_discovery *rp = data;
172 struct hci_conn *conn;
173
174 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
175
176 if (rp->status)
177 return rp->status;
178
179 hci_dev_lock(hdev);
180
181 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
182 if (conn)
183 conn->role = rp->role;
184
185 hci_dev_unlock(hdev);
186
187 return rp->status;
188 }
189
hci_cc_read_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)190 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
191 struct sk_buff *skb)
192 {
193 struct hci_rp_read_link_policy *rp = data;
194 struct hci_conn *conn;
195
196 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
197
198 if (rp->status)
199 return rp->status;
200
201 hci_dev_lock(hdev);
202
203 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
204 if (conn)
205 conn->link_policy = __le16_to_cpu(rp->policy);
206
207 hci_dev_unlock(hdev);
208
209 return rp->status;
210 }
211
hci_cc_write_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)212 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
213 struct sk_buff *skb)
214 {
215 struct hci_rp_write_link_policy *rp = data;
216 struct hci_conn *conn;
217 void *sent;
218
219 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
220
221 if (rp->status)
222 return rp->status;
223
224 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
225 if (!sent)
226 return rp->status;
227
228 hci_dev_lock(hdev);
229
230 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
231 if (conn)
232 conn->link_policy = get_unaligned_le16(sent + 2);
233
234 hci_dev_unlock(hdev);
235
236 return rp->status;
237 }
238
hci_cc_read_def_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)239 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
240 struct sk_buff *skb)
241 {
242 struct hci_rp_read_def_link_policy *rp = data;
243
244 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
245
246 if (rp->status)
247 return rp->status;
248
249 hdev->link_policy = __le16_to_cpu(rp->policy);
250
251 return rp->status;
252 }
253
hci_cc_write_def_link_policy(struct hci_dev * hdev,void * data,struct sk_buff * skb)254 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
255 struct sk_buff *skb)
256 {
257 struct hci_ev_status *rp = data;
258 void *sent;
259
260 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
261
262 if (rp->status)
263 return rp->status;
264
265 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
266 if (!sent)
267 return rp->status;
268
269 hdev->link_policy = get_unaligned_le16(sent);
270
271 return rp->status;
272 }
273
hci_cc_reset(struct hci_dev * hdev,void * data,struct sk_buff * skb)274 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
275 {
276 struct hci_ev_status *rp = data;
277
278 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
279
280 clear_bit(HCI_RESET, &hdev->flags);
281
282 if (rp->status)
283 return rp->status;
284
285 /* Reset all non-persistent flags */
286 hci_dev_clear_volatile_flags(hdev);
287
288 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
289
290 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
291 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
292
293 memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
294 hdev->adv_data_len = 0;
295
296 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
297 hdev->scan_rsp_data_len = 0;
298
299 hdev->le_scan_type = LE_SCAN_PASSIVE;
300
301 hdev->ssp_debug_mode = 0;
302
303 hci_bdaddr_list_clear(&hdev->le_accept_list);
304 hci_bdaddr_list_clear(&hdev->le_resolv_list);
305
306 return rp->status;
307 }
308
hci_cc_read_stored_link_key(struct hci_dev * hdev,void * data,struct sk_buff * skb)309 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
310 struct sk_buff *skb)
311 {
312 struct hci_rp_read_stored_link_key *rp = data;
313 struct hci_cp_read_stored_link_key *sent;
314
315 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
316
317 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
318 if (!sent)
319 return rp->status;
320
321 if (!rp->status && sent->read_all == 0x01) {
322 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
323 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
324 }
325
326 return rp->status;
327 }
328
hci_cc_delete_stored_link_key(struct hci_dev * hdev,void * data,struct sk_buff * skb)329 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
330 struct sk_buff *skb)
331 {
332 struct hci_rp_delete_stored_link_key *rp = data;
333 u16 num_keys;
334
335 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
336
337 if (rp->status)
338 return rp->status;
339
340 num_keys = le16_to_cpu(rp->num_keys);
341
342 if (num_keys <= hdev->stored_num_keys)
343 hdev->stored_num_keys -= num_keys;
344 else
345 hdev->stored_num_keys = 0;
346
347 return rp->status;
348 }
349
hci_cc_write_local_name(struct hci_dev * hdev,void * data,struct sk_buff * skb)350 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
351 struct sk_buff *skb)
352 {
353 struct hci_ev_status *rp = data;
354 void *sent;
355
356 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
357
358 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
359 if (!sent)
360 return rp->status;
361
362 hci_dev_lock(hdev);
363
364 if (hci_dev_test_flag(hdev, HCI_MGMT))
365 mgmt_set_local_name_complete(hdev, sent, rp->status);
366 else if (!rp->status)
367 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
368
369 hci_dev_unlock(hdev);
370
371 return rp->status;
372 }
373
hci_cc_read_local_name(struct hci_dev * hdev,void * data,struct sk_buff * skb)374 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
375 struct sk_buff *skb)
376 {
377 struct hci_rp_read_local_name *rp = data;
378
379 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
380
381 if (rp->status)
382 return rp->status;
383
384 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
385 hci_dev_test_flag(hdev, HCI_CONFIG))
386 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
387
388 return rp->status;
389 }
390
hci_cc_write_auth_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)391 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
392 struct sk_buff *skb)
393 {
394 struct hci_ev_status *rp = data;
395 void *sent;
396
397 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
398
399 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
400 if (!sent)
401 return rp->status;
402
403 hci_dev_lock(hdev);
404
405 if (!rp->status) {
406 __u8 param = *((__u8 *) sent);
407
408 if (param == AUTH_ENABLED)
409 set_bit(HCI_AUTH, &hdev->flags);
410 else
411 clear_bit(HCI_AUTH, &hdev->flags);
412 }
413
414 if (hci_dev_test_flag(hdev, HCI_MGMT))
415 mgmt_auth_enable_complete(hdev, rp->status);
416
417 hci_dev_unlock(hdev);
418
419 return rp->status;
420 }
421
hci_cc_write_encrypt_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)422 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
423 struct sk_buff *skb)
424 {
425 struct hci_ev_status *rp = data;
426 __u8 param;
427 void *sent;
428
429 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
430
431 if (rp->status)
432 return rp->status;
433
434 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
435 if (!sent)
436 return rp->status;
437
438 param = *((__u8 *) sent);
439
440 if (param)
441 set_bit(HCI_ENCRYPT, &hdev->flags);
442 else
443 clear_bit(HCI_ENCRYPT, &hdev->flags);
444
445 return rp->status;
446 }
447
hci_cc_write_scan_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)448 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
449 struct sk_buff *skb)
450 {
451 struct hci_ev_status *rp = data;
452 __u8 param;
453 void *sent;
454
455 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
456
457 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
458 if (!sent)
459 return rp->status;
460
461 param = *((__u8 *) sent);
462
463 hci_dev_lock(hdev);
464
465 if (rp->status) {
466 hdev->discov_timeout = 0;
467 goto done;
468 }
469
470 if (param & SCAN_INQUIRY)
471 set_bit(HCI_ISCAN, &hdev->flags);
472 else
473 clear_bit(HCI_ISCAN, &hdev->flags);
474
475 if (param & SCAN_PAGE)
476 set_bit(HCI_PSCAN, &hdev->flags);
477 else
478 clear_bit(HCI_PSCAN, &hdev->flags);
479
480 done:
481 hci_dev_unlock(hdev);
482
483 return rp->status;
484 }
485
hci_cc_set_event_filter(struct hci_dev * hdev,void * data,struct sk_buff * skb)486 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
487 struct sk_buff *skb)
488 {
489 struct hci_ev_status *rp = data;
490 struct hci_cp_set_event_filter *cp;
491 void *sent;
492
493 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
494
495 if (rp->status)
496 return rp->status;
497
498 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
499 if (!sent)
500 return rp->status;
501
502 cp = (struct hci_cp_set_event_filter *)sent;
503
504 if (cp->flt_type == HCI_FLT_CLEAR_ALL)
505 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
506 else
507 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
508
509 return rp->status;
510 }
511
hci_cc_read_class_of_dev(struct hci_dev * hdev,void * data,struct sk_buff * skb)512 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
513 struct sk_buff *skb)
514 {
515 struct hci_rp_read_class_of_dev *rp = data;
516
517 if (WARN_ON(!hdev))
518 return HCI_ERROR_UNSPECIFIED;
519
520 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
521
522 if (rp->status)
523 return rp->status;
524
525 memcpy(hdev->dev_class, rp->dev_class, 3);
526
527 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
528 hdev->dev_class[1], hdev->dev_class[0]);
529
530 return rp->status;
531 }
532
hci_cc_write_class_of_dev(struct hci_dev * hdev,void * data,struct sk_buff * skb)533 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
534 struct sk_buff *skb)
535 {
536 struct hci_ev_status *rp = data;
537 void *sent;
538
539 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
540
541 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
542 if (!sent)
543 return rp->status;
544
545 hci_dev_lock(hdev);
546
547 if (!rp->status)
548 memcpy(hdev->dev_class, sent, 3);
549
550 if (hci_dev_test_flag(hdev, HCI_MGMT))
551 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
552
553 hci_dev_unlock(hdev);
554
555 return rp->status;
556 }
557
hci_cc_read_voice_setting(struct hci_dev * hdev,void * data,struct sk_buff * skb)558 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
559 struct sk_buff *skb)
560 {
561 struct hci_rp_read_voice_setting *rp = data;
562 __u16 setting;
563
564 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
565
566 if (rp->status)
567 return rp->status;
568
569 setting = __le16_to_cpu(rp->voice_setting);
570
571 if (hdev->voice_setting == setting)
572 return rp->status;
573
574 hdev->voice_setting = setting;
575
576 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
577
578 if (hdev->notify)
579 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
580
581 return rp->status;
582 }
583
hci_cc_write_voice_setting(struct hci_dev * hdev,void * data,struct sk_buff * skb)584 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
585 struct sk_buff *skb)
586 {
587 struct hci_ev_status *rp = data;
588 __u16 setting;
589 void *sent;
590
591 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
592
593 if (rp->status)
594 return rp->status;
595
596 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
597 if (!sent)
598 return rp->status;
599
600 setting = get_unaligned_le16(sent);
601
602 if (hdev->voice_setting == setting)
603 return rp->status;
604
605 hdev->voice_setting = setting;
606
607 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
608
609 if (hdev->notify)
610 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
611
612 return rp->status;
613 }
614
hci_cc_read_num_supported_iac(struct hci_dev * hdev,void * data,struct sk_buff * skb)615 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
616 struct sk_buff *skb)
617 {
618 struct hci_rp_read_num_supported_iac *rp = data;
619
620 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
621
622 if (rp->status)
623 return rp->status;
624
625 hdev->num_iac = rp->num_iac;
626
627 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
628
629 return rp->status;
630 }
631
hci_cc_write_ssp_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)632 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
633 struct sk_buff *skb)
634 {
635 struct hci_ev_status *rp = data;
636 struct hci_cp_write_ssp_mode *sent;
637
638 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
639
640 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
641 if (!sent)
642 return rp->status;
643
644 hci_dev_lock(hdev);
645
646 if (!rp->status) {
647 if (sent->mode)
648 hdev->features[1][0] |= LMP_HOST_SSP;
649 else
650 hdev->features[1][0] &= ~LMP_HOST_SSP;
651 }
652
653 if (!rp->status) {
654 if (sent->mode)
655 hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
656 else
657 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
658 }
659
660 hci_dev_unlock(hdev);
661
662 return rp->status;
663 }
664
hci_cc_write_sc_support(struct hci_dev * hdev,void * data,struct sk_buff * skb)665 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
666 struct sk_buff *skb)
667 {
668 struct hci_ev_status *rp = data;
669 struct hci_cp_write_sc_support *sent;
670
671 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
672
673 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
674 if (!sent)
675 return rp->status;
676
677 hci_dev_lock(hdev);
678
679 if (!rp->status) {
680 if (sent->support)
681 hdev->features[1][0] |= LMP_HOST_SC;
682 else
683 hdev->features[1][0] &= ~LMP_HOST_SC;
684 }
685
686 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
687 if (sent->support)
688 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
689 else
690 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
691 }
692
693 hci_dev_unlock(hdev);
694
695 return rp->status;
696 }
697
hci_cc_read_local_version(struct hci_dev * hdev,void * data,struct sk_buff * skb)698 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
699 struct sk_buff *skb)
700 {
701 struct hci_rp_read_local_version *rp = data;
702
703 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
704
705 if (rp->status)
706 return rp->status;
707
708 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
709 hci_dev_test_flag(hdev, HCI_CONFIG)) {
710 hdev->hci_ver = rp->hci_ver;
711 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
712 hdev->lmp_ver = rp->lmp_ver;
713 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
714 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
715 }
716
717 return rp->status;
718 }
719
hci_cc_read_enc_key_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)720 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
721 struct sk_buff *skb)
722 {
723 struct hci_rp_read_enc_key_size *rp = data;
724 struct hci_conn *conn;
725 u16 handle;
726 u8 status = rp->status;
727
728 bt_dev_dbg(hdev, "status 0x%2.2x", status);
729
730 handle = le16_to_cpu(rp->handle);
731
732 hci_dev_lock(hdev);
733
734 conn = hci_conn_hash_lookup_handle(hdev, handle);
735 if (!conn) {
736 status = 0xFF;
737 goto done;
738 }
739
740 /* While unexpected, the read_enc_key_size command may fail. The most
741 * secure approach is to then assume the key size is 0 to force a
742 * disconnection.
743 */
744 if (status) {
745 bt_dev_err(hdev, "failed to read key size for handle %u",
746 handle);
747 conn->enc_key_size = 0;
748 } else {
749 conn->enc_key_size = rp->key_size;
750 status = 0;
751
752 if (conn->enc_key_size < hdev->min_enc_key_size) {
753 /* As slave role, the conn->state has been set to
754 * BT_CONNECTED and l2cap conn req might not be received
755 * yet, at this moment the l2cap layer almost does
756 * nothing with the non-zero status.
757 * So we also clear encrypt related bits, and then the
758 * handler of l2cap conn req will get the right secure
759 * state at a later time.
760 */
761 status = HCI_ERROR_AUTH_FAILURE;
762 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
763 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
764 }
765 }
766
767 hci_encrypt_cfm(conn, status);
768
769 done:
770 hci_dev_unlock(hdev);
771
772 return status;
773 }
774
hci_cc_read_local_commands(struct hci_dev * hdev,void * data,struct sk_buff * skb)775 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
776 struct sk_buff *skb)
777 {
778 struct hci_rp_read_local_commands *rp = data;
779
780 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
781
782 if (rp->status)
783 return rp->status;
784
785 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
786 hci_dev_test_flag(hdev, HCI_CONFIG))
787 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
788
789 return rp->status;
790 }
791
hci_cc_read_auth_payload_timeout(struct hci_dev * hdev,void * data,struct sk_buff * skb)792 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
793 struct sk_buff *skb)
794 {
795 struct hci_rp_read_auth_payload_to *rp = data;
796 struct hci_conn *conn;
797
798 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
799
800 if (rp->status)
801 return rp->status;
802
803 hci_dev_lock(hdev);
804
805 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
806 if (conn)
807 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
808
809 hci_dev_unlock(hdev);
810
811 return rp->status;
812 }
813
hci_cc_write_auth_payload_timeout(struct hci_dev * hdev,void * data,struct sk_buff * skb)814 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
815 struct sk_buff *skb)
816 {
817 struct hci_rp_write_auth_payload_to *rp = data;
818 struct hci_conn *conn;
819 void *sent;
820
821 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
822
823 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
824 if (!sent)
825 return rp->status;
826
827 hci_dev_lock(hdev);
828
829 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
830 if (!conn) {
831 rp->status = 0xff;
832 goto unlock;
833 }
834
835 if (!rp->status)
836 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
837
838 unlock:
839 hci_dev_unlock(hdev);
840
841 return rp->status;
842 }
843
hci_cc_read_local_features(struct hci_dev * hdev,void * data,struct sk_buff * skb)844 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
845 struct sk_buff *skb)
846 {
847 struct hci_rp_read_local_features *rp = data;
848
849 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
850
851 if (rp->status)
852 return rp->status;
853
854 memcpy(hdev->features, rp->features, 8);
855
856 /* Adjust default settings according to features
857 * supported by device. */
858
859 if (hdev->features[0][0] & LMP_3SLOT)
860 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
861
862 if (hdev->features[0][0] & LMP_5SLOT)
863 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
864
865 if (hdev->features[0][1] & LMP_HV2) {
866 hdev->pkt_type |= (HCI_HV2);
867 hdev->esco_type |= (ESCO_HV2);
868 }
869
870 if (hdev->features[0][1] & LMP_HV3) {
871 hdev->pkt_type |= (HCI_HV3);
872 hdev->esco_type |= (ESCO_HV3);
873 }
874
875 if (lmp_esco_capable(hdev))
876 hdev->esco_type |= (ESCO_EV3);
877
878 if (hdev->features[0][4] & LMP_EV4)
879 hdev->esco_type |= (ESCO_EV4);
880
881 if (hdev->features[0][4] & LMP_EV5)
882 hdev->esco_type |= (ESCO_EV5);
883
884 if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
885 hdev->esco_type |= (ESCO_2EV3);
886
887 if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
888 hdev->esco_type |= (ESCO_3EV3);
889
890 if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
891 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
892
893 return rp->status;
894 }
895
hci_cc_read_local_ext_features(struct hci_dev * hdev,void * data,struct sk_buff * skb)896 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
897 struct sk_buff *skb)
898 {
899 struct hci_rp_read_local_ext_features *rp = data;
900
901 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
902
903 if (rp->status)
904 return rp->status;
905
906 if (hdev->max_page < rp->max_page) {
907 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
908 &hdev->quirks))
909 bt_dev_warn(hdev, "broken local ext features page 2");
910 else
911 hdev->max_page = rp->max_page;
912 }
913
914 if (rp->page < HCI_MAX_PAGES)
915 memcpy(hdev->features[rp->page], rp->features, 8);
916
917 return rp->status;
918 }
919
hci_cc_read_flow_control_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)920 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
921 struct sk_buff *skb)
922 {
923 struct hci_rp_read_flow_control_mode *rp = data;
924
925 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
926
927 if (rp->status)
928 return rp->status;
929
930 hdev->flow_ctl_mode = rp->mode;
931
932 return rp->status;
933 }
934
hci_cc_read_buffer_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)935 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
936 struct sk_buff *skb)
937 {
938 struct hci_rp_read_buffer_size *rp = data;
939
940 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
941
942 if (rp->status)
943 return rp->status;
944
945 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu);
946 hdev->sco_mtu = rp->sco_mtu;
947 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
948 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
949
950 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
951 hdev->sco_mtu = 64;
952 hdev->sco_pkts = 8;
953 }
954
955 hdev->acl_cnt = hdev->acl_pkts;
956 hdev->sco_cnt = hdev->sco_pkts;
957
958 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
959 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
960
961 return rp->status;
962 }
963
hci_cc_read_bd_addr(struct hci_dev * hdev,void * data,struct sk_buff * skb)964 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
965 struct sk_buff *skb)
966 {
967 struct hci_rp_read_bd_addr *rp = data;
968
969 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
970
971 if (rp->status)
972 return rp->status;
973
974 if (test_bit(HCI_INIT, &hdev->flags))
975 bacpy(&hdev->bdaddr, &rp->bdaddr);
976
977 if (hci_dev_test_flag(hdev, HCI_SETUP))
978 bacpy(&hdev->setup_addr, &rp->bdaddr);
979
980 return rp->status;
981 }
982
hci_cc_read_local_pairing_opts(struct hci_dev * hdev,void * data,struct sk_buff * skb)983 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
984 struct sk_buff *skb)
985 {
986 struct hci_rp_read_local_pairing_opts *rp = data;
987
988 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
989
990 if (rp->status)
991 return rp->status;
992
993 if (hci_dev_test_flag(hdev, HCI_SETUP) ||
994 hci_dev_test_flag(hdev, HCI_CONFIG)) {
995 hdev->pairing_opts = rp->pairing_opts;
996 hdev->max_enc_key_size = rp->max_key_size;
997 }
998
999 return rp->status;
1000 }
1001
hci_cc_read_page_scan_activity(struct hci_dev * hdev,void * data,struct sk_buff * skb)1002 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
1003 struct sk_buff *skb)
1004 {
1005 struct hci_rp_read_page_scan_activity *rp = data;
1006
1007 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1008
1009 if (rp->status)
1010 return rp->status;
1011
1012 if (test_bit(HCI_INIT, &hdev->flags)) {
1013 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1014 hdev->page_scan_window = __le16_to_cpu(rp->window);
1015 }
1016
1017 return rp->status;
1018 }
1019
hci_cc_write_page_scan_activity(struct hci_dev * hdev,void * data,struct sk_buff * skb)1020 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1021 struct sk_buff *skb)
1022 {
1023 struct hci_ev_status *rp = data;
1024 struct hci_cp_write_page_scan_activity *sent;
1025
1026 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1027
1028 if (rp->status)
1029 return rp->status;
1030
1031 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1032 if (!sent)
1033 return rp->status;
1034
1035 hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1036 hdev->page_scan_window = __le16_to_cpu(sent->window);
1037
1038 return rp->status;
1039 }
1040
hci_cc_read_page_scan_type(struct hci_dev * hdev,void * data,struct sk_buff * skb)1041 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1042 struct sk_buff *skb)
1043 {
1044 struct hci_rp_read_page_scan_type *rp = data;
1045
1046 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1047
1048 if (rp->status)
1049 return rp->status;
1050
1051 if (test_bit(HCI_INIT, &hdev->flags))
1052 hdev->page_scan_type = rp->type;
1053
1054 return rp->status;
1055 }
1056
hci_cc_write_page_scan_type(struct hci_dev * hdev,void * data,struct sk_buff * skb)1057 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1058 struct sk_buff *skb)
1059 {
1060 struct hci_ev_status *rp = data;
1061 u8 *type;
1062
1063 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1064
1065 if (rp->status)
1066 return rp->status;
1067
1068 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1069 if (type)
1070 hdev->page_scan_type = *type;
1071
1072 return rp->status;
1073 }
1074
hci_cc_read_data_block_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)1075 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1076 struct sk_buff *skb)
1077 {
1078 struct hci_rp_read_data_block_size *rp = data;
1079
1080 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1081
1082 if (rp->status)
1083 return rp->status;
1084
1085 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1086 hdev->block_len = __le16_to_cpu(rp->block_len);
1087 hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1088
1089 hdev->block_cnt = hdev->num_blocks;
1090
1091 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1092 hdev->block_cnt, hdev->block_len);
1093
1094 return rp->status;
1095 }
1096
hci_cc_read_clock(struct hci_dev * hdev,void * data,struct sk_buff * skb)1097 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1098 struct sk_buff *skb)
1099 {
1100 struct hci_rp_read_clock *rp = data;
1101 struct hci_cp_read_clock *cp;
1102 struct hci_conn *conn;
1103
1104 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1105
1106 if (rp->status)
1107 return rp->status;
1108
1109 hci_dev_lock(hdev);
1110
1111 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1112 if (!cp)
1113 goto unlock;
1114
1115 if (cp->which == 0x00) {
1116 hdev->clock = le32_to_cpu(rp->clock);
1117 goto unlock;
1118 }
1119
1120 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1121 if (conn) {
1122 conn->clock = le32_to_cpu(rp->clock);
1123 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1124 }
1125
1126 unlock:
1127 hci_dev_unlock(hdev);
1128 return rp->status;
1129 }
1130
hci_cc_read_local_amp_info(struct hci_dev * hdev,void * data,struct sk_buff * skb)1131 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1132 struct sk_buff *skb)
1133 {
1134 struct hci_rp_read_local_amp_info *rp = data;
1135
1136 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1137
1138 if (rp->status)
1139 return rp->status;
1140
1141 hdev->amp_status = rp->amp_status;
1142 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1143 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1144 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1145 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1146 hdev->amp_type = rp->amp_type;
1147 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1148 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1149 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1150 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1151
1152 return rp->status;
1153 }
1154
hci_cc_read_inq_rsp_tx_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)1155 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1156 struct sk_buff *skb)
1157 {
1158 struct hci_rp_read_inq_rsp_tx_power *rp = data;
1159
1160 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1161
1162 if (rp->status)
1163 return rp->status;
1164
1165 hdev->inq_tx_power = rp->tx_power;
1166
1167 return rp->status;
1168 }
1169
hci_cc_read_def_err_data_reporting(struct hci_dev * hdev,void * data,struct sk_buff * skb)1170 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1171 struct sk_buff *skb)
1172 {
1173 struct hci_rp_read_def_err_data_reporting *rp = data;
1174
1175 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1176
1177 if (rp->status)
1178 return rp->status;
1179
1180 hdev->err_data_reporting = rp->err_data_reporting;
1181
1182 return rp->status;
1183 }
1184
hci_cc_write_def_err_data_reporting(struct hci_dev * hdev,void * data,struct sk_buff * skb)1185 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1186 struct sk_buff *skb)
1187 {
1188 struct hci_ev_status *rp = data;
1189 struct hci_cp_write_def_err_data_reporting *cp;
1190
1191 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1192
1193 if (rp->status)
1194 return rp->status;
1195
1196 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1197 if (!cp)
1198 return rp->status;
1199
1200 hdev->err_data_reporting = cp->err_data_reporting;
1201
1202 return rp->status;
1203 }
1204
hci_cc_pin_code_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1205 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1206 struct sk_buff *skb)
1207 {
1208 struct hci_rp_pin_code_reply *rp = data;
1209 struct hci_cp_pin_code_reply *cp;
1210 struct hci_conn *conn;
1211
1212 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1213
1214 hci_dev_lock(hdev);
1215
1216 if (hci_dev_test_flag(hdev, HCI_MGMT))
1217 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1218
1219 if (rp->status)
1220 goto unlock;
1221
1222 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1223 if (!cp)
1224 goto unlock;
1225
1226 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1227 if (conn)
1228 conn->pin_length = cp->pin_len;
1229
1230 unlock:
1231 hci_dev_unlock(hdev);
1232 return rp->status;
1233 }
1234
hci_cc_pin_code_neg_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1235 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1236 struct sk_buff *skb)
1237 {
1238 struct hci_rp_pin_code_neg_reply *rp = data;
1239
1240 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1241
1242 hci_dev_lock(hdev);
1243
1244 if (hci_dev_test_flag(hdev, HCI_MGMT))
1245 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1246 rp->status);
1247
1248 hci_dev_unlock(hdev);
1249
1250 return rp->status;
1251 }
1252
hci_cc_le_read_buffer_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)1253 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1254 struct sk_buff *skb)
1255 {
1256 struct hci_rp_le_read_buffer_size *rp = data;
1257
1258 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1259
1260 if (rp->status)
1261 return rp->status;
1262
1263 hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1264 hdev->le_pkts = rp->le_max_pkt;
1265
1266 hdev->le_cnt = hdev->le_pkts;
1267
1268 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1269
1270 return rp->status;
1271 }
1272
hci_cc_le_read_local_features(struct hci_dev * hdev,void * data,struct sk_buff * skb)1273 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1274 struct sk_buff *skb)
1275 {
1276 struct hci_rp_le_read_local_features *rp = data;
1277
1278 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1279
1280 if (rp->status)
1281 return rp->status;
1282
1283 memcpy(hdev->le_features, rp->features, 8);
1284
1285 return rp->status;
1286 }
1287
hci_cc_le_read_adv_tx_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)1288 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1289 struct sk_buff *skb)
1290 {
1291 struct hci_rp_le_read_adv_tx_power *rp = data;
1292
1293 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1294
1295 if (rp->status)
1296 return rp->status;
1297
1298 hdev->adv_tx_power = rp->tx_power;
1299
1300 return rp->status;
1301 }
1302
hci_cc_user_confirm_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1303 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1304 struct sk_buff *skb)
1305 {
1306 struct hci_rp_user_confirm_reply *rp = data;
1307
1308 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1309
1310 hci_dev_lock(hdev);
1311
1312 if (hci_dev_test_flag(hdev, HCI_MGMT))
1313 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1314 rp->status);
1315
1316 hci_dev_unlock(hdev);
1317
1318 return rp->status;
1319 }
1320
hci_cc_user_confirm_neg_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1321 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1322 struct sk_buff *skb)
1323 {
1324 struct hci_rp_user_confirm_reply *rp = data;
1325
1326 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1327
1328 hci_dev_lock(hdev);
1329
1330 if (hci_dev_test_flag(hdev, HCI_MGMT))
1331 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1332 ACL_LINK, 0, rp->status);
1333
1334 hci_dev_unlock(hdev);
1335
1336 return rp->status;
1337 }
1338
hci_cc_user_passkey_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1339 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1340 struct sk_buff *skb)
1341 {
1342 struct hci_rp_user_confirm_reply *rp = data;
1343
1344 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1345
1346 hci_dev_lock(hdev);
1347
1348 if (hci_dev_test_flag(hdev, HCI_MGMT))
1349 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1350 0, rp->status);
1351
1352 hci_dev_unlock(hdev);
1353
1354 return rp->status;
1355 }
1356
hci_cc_user_passkey_neg_reply(struct hci_dev * hdev,void * data,struct sk_buff * skb)1357 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1358 struct sk_buff *skb)
1359 {
1360 struct hci_rp_user_confirm_reply *rp = data;
1361
1362 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1363
1364 hci_dev_lock(hdev);
1365
1366 if (hci_dev_test_flag(hdev, HCI_MGMT))
1367 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1368 ACL_LINK, 0, rp->status);
1369
1370 hci_dev_unlock(hdev);
1371
1372 return rp->status;
1373 }
1374
hci_cc_read_local_oob_data(struct hci_dev * hdev,void * data,struct sk_buff * skb)1375 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1376 struct sk_buff *skb)
1377 {
1378 struct hci_rp_read_local_oob_data *rp = data;
1379
1380 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1381
1382 return rp->status;
1383 }
1384
hci_cc_read_local_oob_ext_data(struct hci_dev * hdev,void * data,struct sk_buff * skb)1385 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1386 struct sk_buff *skb)
1387 {
1388 struct hci_rp_read_local_oob_ext_data *rp = data;
1389
1390 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1391
1392 return rp->status;
1393 }
1394
hci_cc_le_set_random_addr(struct hci_dev * hdev,void * data,struct sk_buff * skb)1395 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1396 struct sk_buff *skb)
1397 {
1398 struct hci_ev_status *rp = data;
1399 bdaddr_t *sent;
1400
1401 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1402
1403 if (rp->status)
1404 return rp->status;
1405
1406 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1407 if (!sent)
1408 return rp->status;
1409
1410 hci_dev_lock(hdev);
1411
1412 bacpy(&hdev->random_addr, sent);
1413
1414 if (!bacmp(&hdev->rpa, sent)) {
1415 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1416 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1417 secs_to_jiffies(hdev->rpa_timeout));
1418 }
1419
1420 hci_dev_unlock(hdev);
1421
1422 return rp->status;
1423 }
1424
hci_cc_le_set_default_phy(struct hci_dev * hdev,void * data,struct sk_buff * skb)1425 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1426 struct sk_buff *skb)
1427 {
1428 struct hci_ev_status *rp = data;
1429 struct hci_cp_le_set_default_phy *cp;
1430
1431 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1432
1433 if (rp->status)
1434 return rp->status;
1435
1436 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1437 if (!cp)
1438 return rp->status;
1439
1440 hci_dev_lock(hdev);
1441
1442 hdev->le_tx_def_phys = cp->tx_phys;
1443 hdev->le_rx_def_phys = cp->rx_phys;
1444
1445 hci_dev_unlock(hdev);
1446
1447 return rp->status;
1448 }
1449
hci_cc_le_set_adv_set_random_addr(struct hci_dev * hdev,void * data,struct sk_buff * skb)1450 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1451 struct sk_buff *skb)
1452 {
1453 struct hci_ev_status *rp = data;
1454 struct hci_cp_le_set_adv_set_rand_addr *cp;
1455 struct adv_info *adv;
1456
1457 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1458
1459 if (rp->status)
1460 return rp->status;
1461
1462 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1463 /* Update only in case the adv instance since handle 0x00 shall be using
1464 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1465 * non-extended adverting.
1466 */
1467 if (!cp || !cp->handle)
1468 return rp->status;
1469
1470 hci_dev_lock(hdev);
1471
1472 adv = hci_find_adv_instance(hdev, cp->handle);
1473 if (adv) {
1474 bacpy(&adv->random_addr, &cp->bdaddr);
1475 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1476 adv->rpa_expired = false;
1477 queue_delayed_work(hdev->workqueue,
1478 &adv->rpa_expired_cb,
1479 secs_to_jiffies(hdev->rpa_timeout));
1480 }
1481 }
1482
1483 hci_dev_unlock(hdev);
1484
1485 return rp->status;
1486 }
1487
hci_cc_le_remove_adv_set(struct hci_dev * hdev,void * data,struct sk_buff * skb)1488 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1489 struct sk_buff *skb)
1490 {
1491 struct hci_ev_status *rp = data;
1492 u8 *instance;
1493 int err;
1494
1495 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1496
1497 if (rp->status)
1498 return rp->status;
1499
1500 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1501 if (!instance)
1502 return rp->status;
1503
1504 hci_dev_lock(hdev);
1505
1506 err = hci_remove_adv_instance(hdev, *instance);
1507 if (!err)
1508 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1509 *instance);
1510
1511 hci_dev_unlock(hdev);
1512
1513 return rp->status;
1514 }
1515
hci_cc_le_clear_adv_sets(struct hci_dev * hdev,void * data,struct sk_buff * skb)1516 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1517 struct sk_buff *skb)
1518 {
1519 struct hci_ev_status *rp = data;
1520 struct adv_info *adv, *n;
1521 int err;
1522
1523 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1524
1525 if (rp->status)
1526 return rp->status;
1527
1528 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1529 return rp->status;
1530
1531 hci_dev_lock(hdev);
1532
1533 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1534 u8 instance = adv->instance;
1535
1536 err = hci_remove_adv_instance(hdev, instance);
1537 if (!err)
1538 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1539 hdev, instance);
1540 }
1541
1542 hci_dev_unlock(hdev);
1543
1544 return rp->status;
1545 }
1546
hci_cc_le_read_transmit_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)1547 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1548 struct sk_buff *skb)
1549 {
1550 struct hci_rp_le_read_transmit_power *rp = data;
1551
1552 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1553
1554 if (rp->status)
1555 return rp->status;
1556
1557 hdev->min_le_tx_power = rp->min_le_tx_power;
1558 hdev->max_le_tx_power = rp->max_le_tx_power;
1559
1560 return rp->status;
1561 }
1562
hci_cc_le_set_privacy_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)1563 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1564 struct sk_buff *skb)
1565 {
1566 struct hci_ev_status *rp = data;
1567 struct hci_cp_le_set_privacy_mode *cp;
1568 struct hci_conn_params *params;
1569
1570 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1571
1572 if (rp->status)
1573 return rp->status;
1574
1575 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1576 if (!cp)
1577 return rp->status;
1578
1579 hci_dev_lock(hdev);
1580
1581 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1582 if (params)
1583 WRITE_ONCE(params->privacy_mode, cp->mode);
1584
1585 hci_dev_unlock(hdev);
1586
1587 return rp->status;
1588 }
1589
hci_cc_le_set_adv_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1590 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1591 struct sk_buff *skb)
1592 {
1593 struct hci_ev_status *rp = data;
1594 __u8 *sent;
1595
1596 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1597
1598 if (rp->status)
1599 return rp->status;
1600
1601 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1602 if (!sent)
1603 return rp->status;
1604
1605 hci_dev_lock(hdev);
1606
1607 /* If we're doing connection initiation as peripheral. Set a
1608 * timeout in case something goes wrong.
1609 */
1610 if (*sent) {
1611 struct hci_conn *conn;
1612
1613 hci_dev_set_flag(hdev, HCI_LE_ADV);
1614
1615 conn = hci_lookup_le_connect(hdev);
1616 if (conn)
1617 queue_delayed_work(hdev->workqueue,
1618 &conn->le_conn_timeout,
1619 conn->conn_timeout);
1620 } else {
1621 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1622 }
1623
1624 hci_dev_unlock(hdev);
1625
1626 return rp->status;
1627 }
1628
hci_cc_le_set_ext_adv_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1629 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1630 struct sk_buff *skb)
1631 {
1632 struct hci_cp_le_set_ext_adv_enable *cp;
1633 struct hci_cp_ext_adv_set *set;
1634 struct adv_info *adv = NULL, *n;
1635 struct hci_ev_status *rp = data;
1636
1637 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1638
1639 if (rp->status)
1640 return rp->status;
1641
1642 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1643 if (!cp)
1644 return rp->status;
1645
1646 set = (void *)cp->data;
1647
1648 hci_dev_lock(hdev);
1649
1650 if (cp->num_of_sets)
1651 adv = hci_find_adv_instance(hdev, set->handle);
1652
1653 if (cp->enable) {
1654 struct hci_conn *conn;
1655
1656 hci_dev_set_flag(hdev, HCI_LE_ADV);
1657
1658 if (adv && !adv->periodic)
1659 adv->enabled = true;
1660
1661 conn = hci_lookup_le_connect(hdev);
1662 if (conn)
1663 queue_delayed_work(hdev->workqueue,
1664 &conn->le_conn_timeout,
1665 conn->conn_timeout);
1666 } else {
1667 if (cp->num_of_sets) {
1668 if (adv)
1669 adv->enabled = false;
1670
1671 /* If just one instance was disabled check if there are
1672 * any other instance enabled before clearing HCI_LE_ADV
1673 */
1674 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1675 list) {
1676 if (adv->enabled)
1677 goto unlock;
1678 }
1679 } else {
1680 /* All instances shall be considered disabled */
1681 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1682 list)
1683 adv->enabled = false;
1684 }
1685
1686 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1687 }
1688
1689 unlock:
1690 hci_dev_unlock(hdev);
1691 return rp->status;
1692 }
1693
hci_cc_le_set_scan_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)1694 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1695 struct sk_buff *skb)
1696 {
1697 struct hci_cp_le_set_scan_param *cp;
1698 struct hci_ev_status *rp = data;
1699
1700 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1701
1702 if (rp->status)
1703 return rp->status;
1704
1705 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1706 if (!cp)
1707 return rp->status;
1708
1709 hci_dev_lock(hdev);
1710
1711 hdev->le_scan_type = cp->type;
1712
1713 hci_dev_unlock(hdev);
1714
1715 return rp->status;
1716 }
1717
hci_cc_le_set_ext_scan_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)1718 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1719 struct sk_buff *skb)
1720 {
1721 struct hci_cp_le_set_ext_scan_params *cp;
1722 struct hci_ev_status *rp = data;
1723 struct hci_cp_le_scan_phy_params *phy_param;
1724
1725 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1726
1727 if (rp->status)
1728 return rp->status;
1729
1730 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1731 if (!cp)
1732 return rp->status;
1733
1734 phy_param = (void *)cp->data;
1735
1736 hci_dev_lock(hdev);
1737
1738 hdev->le_scan_type = phy_param->type;
1739
1740 hci_dev_unlock(hdev);
1741
1742 return rp->status;
1743 }
1744
has_pending_adv_report(struct hci_dev * hdev)1745 static bool has_pending_adv_report(struct hci_dev *hdev)
1746 {
1747 struct discovery_state *d = &hdev->discovery;
1748
1749 return bacmp(&d->last_adv_addr, BDADDR_ANY);
1750 }
1751
clear_pending_adv_report(struct hci_dev * hdev)1752 static void clear_pending_adv_report(struct hci_dev *hdev)
1753 {
1754 struct discovery_state *d = &hdev->discovery;
1755
1756 bacpy(&d->last_adv_addr, BDADDR_ANY);
1757 d->last_adv_data_len = 0;
1758 }
1759
store_pending_adv_report(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 bdaddr_type,s8 rssi,u32 flags,u8 * data,u8 len)1760 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1761 u8 bdaddr_type, s8 rssi, u32 flags,
1762 u8 *data, u8 len)
1763 {
1764 struct discovery_state *d = &hdev->discovery;
1765
1766 if (len > max_adv_len(hdev))
1767 return;
1768
1769 bacpy(&d->last_adv_addr, bdaddr);
1770 d->last_adv_addr_type = bdaddr_type;
1771 d->last_adv_rssi = rssi;
1772 d->last_adv_flags = flags;
1773 memcpy(d->last_adv_data, data, len);
1774 d->last_adv_data_len = len;
1775 }
1776
le_set_scan_enable_complete(struct hci_dev * hdev,u8 enable)1777 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1778 {
1779 hci_dev_lock(hdev);
1780
1781 switch (enable) {
1782 case LE_SCAN_ENABLE:
1783 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1784 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1785 clear_pending_adv_report(hdev);
1786 if (hci_dev_test_flag(hdev, HCI_MESH))
1787 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1788 break;
1789
1790 case LE_SCAN_DISABLE:
1791 /* We do this here instead of when setting DISCOVERY_STOPPED
1792 * since the latter would potentially require waiting for
1793 * inquiry to stop too.
1794 */
1795 if (has_pending_adv_report(hdev)) {
1796 struct discovery_state *d = &hdev->discovery;
1797
1798 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1799 d->last_adv_addr_type, NULL,
1800 d->last_adv_rssi, d->last_adv_flags,
1801 d->last_adv_data,
1802 d->last_adv_data_len, NULL, 0, 0);
1803 }
1804
1805 /* Cancel this timer so that we don't try to disable scanning
1806 * when it's already disabled.
1807 */
1808 cancel_delayed_work(&hdev->le_scan_disable);
1809
1810 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1811
1812 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1813 * interrupted scanning due to a connect request. Mark
1814 * therefore discovery as stopped.
1815 */
1816 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1817 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1818 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1819 hdev->discovery.state == DISCOVERY_FINDING)
1820 queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1821
1822 break;
1823
1824 default:
1825 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1826 enable);
1827 break;
1828 }
1829
1830 hci_dev_unlock(hdev);
1831 }
1832
hci_cc_le_set_scan_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1833 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1834 struct sk_buff *skb)
1835 {
1836 struct hci_cp_le_set_scan_enable *cp;
1837 struct hci_ev_status *rp = data;
1838
1839 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1840
1841 if (rp->status)
1842 return rp->status;
1843
1844 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1845 if (!cp)
1846 return rp->status;
1847
1848 le_set_scan_enable_complete(hdev, cp->enable);
1849
1850 return rp->status;
1851 }
1852
hci_cc_le_set_ext_scan_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)1853 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1854 struct sk_buff *skb)
1855 {
1856 struct hci_cp_le_set_ext_scan_enable *cp;
1857 struct hci_ev_status *rp = data;
1858
1859 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1860
1861 if (rp->status)
1862 return rp->status;
1863
1864 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1865 if (!cp)
1866 return rp->status;
1867
1868 le_set_scan_enable_complete(hdev, cp->enable);
1869
1870 return rp->status;
1871 }
1872
hci_cc_le_read_num_adv_sets(struct hci_dev * hdev,void * data,struct sk_buff * skb)1873 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1874 struct sk_buff *skb)
1875 {
1876 struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1877
1878 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1879 rp->num_of_sets);
1880
1881 if (rp->status)
1882 return rp->status;
1883
1884 hdev->le_num_of_adv_sets = rp->num_of_sets;
1885
1886 return rp->status;
1887 }
1888
hci_cc_le_read_accept_list_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)1889 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1890 struct sk_buff *skb)
1891 {
1892 struct hci_rp_le_read_accept_list_size *rp = data;
1893
1894 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1895
1896 if (rp->status)
1897 return rp->status;
1898
1899 hdev->le_accept_list_size = rp->size;
1900
1901 return rp->status;
1902 }
1903
hci_cc_le_clear_accept_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1904 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1905 struct sk_buff *skb)
1906 {
1907 struct hci_ev_status *rp = data;
1908
1909 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1910
1911 if (rp->status)
1912 return rp->status;
1913
1914 hci_dev_lock(hdev);
1915 hci_bdaddr_list_clear(&hdev->le_accept_list);
1916 hci_dev_unlock(hdev);
1917
1918 return rp->status;
1919 }
1920
hci_cc_le_add_to_accept_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1921 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1922 struct sk_buff *skb)
1923 {
1924 struct hci_cp_le_add_to_accept_list *sent;
1925 struct hci_ev_status *rp = data;
1926
1927 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1928
1929 if (rp->status)
1930 return rp->status;
1931
1932 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1933 if (!sent)
1934 return rp->status;
1935
1936 hci_dev_lock(hdev);
1937 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1938 sent->bdaddr_type);
1939 hci_dev_unlock(hdev);
1940
1941 return rp->status;
1942 }
1943
hci_cc_le_del_from_accept_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)1944 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1945 struct sk_buff *skb)
1946 {
1947 struct hci_cp_le_del_from_accept_list *sent;
1948 struct hci_ev_status *rp = data;
1949
1950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1951
1952 if (rp->status)
1953 return rp->status;
1954
1955 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1956 if (!sent)
1957 return rp->status;
1958
1959 hci_dev_lock(hdev);
1960 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1961 sent->bdaddr_type);
1962 hci_dev_unlock(hdev);
1963
1964 return rp->status;
1965 }
1966
hci_cc_le_read_supported_states(struct hci_dev * hdev,void * data,struct sk_buff * skb)1967 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1968 struct sk_buff *skb)
1969 {
1970 struct hci_rp_le_read_supported_states *rp = data;
1971
1972 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1973
1974 if (rp->status)
1975 return rp->status;
1976
1977 memcpy(hdev->le_states, rp->le_states, 8);
1978
1979 return rp->status;
1980 }
1981
hci_cc_le_read_def_data_len(struct hci_dev * hdev,void * data,struct sk_buff * skb)1982 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1983 struct sk_buff *skb)
1984 {
1985 struct hci_rp_le_read_def_data_len *rp = data;
1986
1987 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1988
1989 if (rp->status)
1990 return rp->status;
1991
1992 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1993 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1994
1995 return rp->status;
1996 }
1997
hci_cc_le_write_def_data_len(struct hci_dev * hdev,void * data,struct sk_buff * skb)1998 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1999 struct sk_buff *skb)
2000 {
2001 struct hci_cp_le_write_def_data_len *sent;
2002 struct hci_ev_status *rp = data;
2003
2004 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2005
2006 if (rp->status)
2007 return rp->status;
2008
2009 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2010 if (!sent)
2011 return rp->status;
2012
2013 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2014 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2015
2016 return rp->status;
2017 }
2018
hci_cc_le_add_to_resolv_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)2019 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2020 struct sk_buff *skb)
2021 {
2022 struct hci_cp_le_add_to_resolv_list *sent;
2023 struct hci_ev_status *rp = data;
2024
2025 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2026
2027 if (rp->status)
2028 return rp->status;
2029
2030 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2031 if (!sent)
2032 return rp->status;
2033
2034 hci_dev_lock(hdev);
2035 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2036 sent->bdaddr_type, sent->peer_irk,
2037 sent->local_irk);
2038 hci_dev_unlock(hdev);
2039
2040 return rp->status;
2041 }
2042
hci_cc_le_del_from_resolv_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)2043 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2044 struct sk_buff *skb)
2045 {
2046 struct hci_cp_le_del_from_resolv_list *sent;
2047 struct hci_ev_status *rp = data;
2048
2049 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2050
2051 if (rp->status)
2052 return rp->status;
2053
2054 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2055 if (!sent)
2056 return rp->status;
2057
2058 hci_dev_lock(hdev);
2059 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2060 sent->bdaddr_type);
2061 hci_dev_unlock(hdev);
2062
2063 return rp->status;
2064 }
2065
hci_cc_le_clear_resolv_list(struct hci_dev * hdev,void * data,struct sk_buff * skb)2066 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2067 struct sk_buff *skb)
2068 {
2069 struct hci_ev_status *rp = data;
2070
2071 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2072
2073 if (rp->status)
2074 return rp->status;
2075
2076 hci_dev_lock(hdev);
2077 hci_bdaddr_list_clear(&hdev->le_resolv_list);
2078 hci_dev_unlock(hdev);
2079
2080 return rp->status;
2081 }
2082
hci_cc_le_read_resolv_list_size(struct hci_dev * hdev,void * data,struct sk_buff * skb)2083 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2084 struct sk_buff *skb)
2085 {
2086 struct hci_rp_le_read_resolv_list_size *rp = data;
2087
2088 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2089
2090 if (rp->status)
2091 return rp->status;
2092
2093 hdev->le_resolv_list_size = rp->size;
2094
2095 return rp->status;
2096 }
2097
hci_cc_le_set_addr_resolution_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)2098 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2099 struct sk_buff *skb)
2100 {
2101 struct hci_ev_status *rp = data;
2102 __u8 *sent;
2103
2104 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2105
2106 if (rp->status)
2107 return rp->status;
2108
2109 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2110 if (!sent)
2111 return rp->status;
2112
2113 hci_dev_lock(hdev);
2114
2115 if (*sent)
2116 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2117 else
2118 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2119
2120 hci_dev_unlock(hdev);
2121
2122 return rp->status;
2123 }
2124
hci_cc_le_read_max_data_len(struct hci_dev * hdev,void * data,struct sk_buff * skb)2125 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2126 struct sk_buff *skb)
2127 {
2128 struct hci_rp_le_read_max_data_len *rp = data;
2129
2130 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2131
2132 if (rp->status)
2133 return rp->status;
2134
2135 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2136 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2137 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2138 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2139
2140 return rp->status;
2141 }
2142
hci_cc_write_le_host_supported(struct hci_dev * hdev,void * data,struct sk_buff * skb)2143 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2144 struct sk_buff *skb)
2145 {
2146 struct hci_cp_write_le_host_supported *sent;
2147 struct hci_ev_status *rp = data;
2148
2149 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2150
2151 if (rp->status)
2152 return rp->status;
2153
2154 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2155 if (!sent)
2156 return rp->status;
2157
2158 hci_dev_lock(hdev);
2159
2160 if (sent->le) {
2161 hdev->features[1][0] |= LMP_HOST_LE;
2162 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2163 } else {
2164 hdev->features[1][0] &= ~LMP_HOST_LE;
2165 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2166 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2167 }
2168
2169 if (sent->simul)
2170 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2171 else
2172 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2173
2174 hci_dev_unlock(hdev);
2175
2176 return rp->status;
2177 }
2178
hci_cc_set_adv_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)2179 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2180 struct sk_buff *skb)
2181 {
2182 struct hci_cp_le_set_adv_param *cp;
2183 struct hci_ev_status *rp = data;
2184
2185 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2186
2187 if (rp->status)
2188 return rp->status;
2189
2190 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2191 if (!cp)
2192 return rp->status;
2193
2194 hci_dev_lock(hdev);
2195 hdev->adv_addr_type = cp->own_address_type;
2196 hci_dev_unlock(hdev);
2197
2198 return rp->status;
2199 }
2200
hci_cc_set_ext_adv_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)2201 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2202 struct sk_buff *skb)
2203 {
2204 struct hci_rp_le_set_ext_adv_params *rp = data;
2205 struct hci_cp_le_set_ext_adv_params *cp;
2206 struct adv_info *adv_instance;
2207
2208 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2209
2210 if (rp->status)
2211 return rp->status;
2212
2213 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2214 if (!cp)
2215 return rp->status;
2216
2217 hci_dev_lock(hdev);
2218 hdev->adv_addr_type = cp->own_addr_type;
2219 if (!cp->handle) {
2220 /* Store in hdev for instance 0 */
2221 hdev->adv_tx_power = rp->tx_power;
2222 } else {
2223 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2224 if (adv_instance)
2225 adv_instance->tx_power = rp->tx_power;
2226 }
2227 /* Update adv data as tx power is known now */
2228 hci_update_adv_data(hdev, cp->handle);
2229
2230 hci_dev_unlock(hdev);
2231
2232 return rp->status;
2233 }
2234
hci_cc_read_rssi(struct hci_dev * hdev,void * data,struct sk_buff * skb)2235 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2236 struct sk_buff *skb)
2237 {
2238 struct hci_rp_read_rssi *rp = data;
2239 struct hci_conn *conn;
2240
2241 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2242
2243 if (rp->status)
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 conn->rssi = rp->rssi;
2251
2252 hci_dev_unlock(hdev);
2253
2254 return rp->status;
2255 }
2256
hci_cc_read_tx_power(struct hci_dev * hdev,void * data,struct sk_buff * skb)2257 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2258 struct sk_buff *skb)
2259 {
2260 struct hci_cp_read_tx_power *sent;
2261 struct hci_rp_read_tx_power *rp = data;
2262 struct hci_conn *conn;
2263
2264 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2265
2266 if (rp->status)
2267 return rp->status;
2268
2269 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2270 if (!sent)
2271 return rp->status;
2272
2273 hci_dev_lock(hdev);
2274
2275 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2276 if (!conn)
2277 goto unlock;
2278
2279 switch (sent->type) {
2280 case 0x00:
2281 conn->tx_power = rp->tx_power;
2282 break;
2283 case 0x01:
2284 conn->max_tx_power = rp->tx_power;
2285 break;
2286 }
2287
2288 unlock:
2289 hci_dev_unlock(hdev);
2290 return rp->status;
2291 }
2292
hci_cc_write_ssp_debug_mode(struct hci_dev * hdev,void * data,struct sk_buff * skb)2293 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2294 struct sk_buff *skb)
2295 {
2296 struct hci_ev_status *rp = data;
2297 u8 *mode;
2298
2299 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2300
2301 if (rp->status)
2302 return rp->status;
2303
2304 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2305 if (mode)
2306 hdev->ssp_debug_mode = *mode;
2307
2308 return rp->status;
2309 }
2310
hci_cs_inquiry(struct hci_dev * hdev,__u8 status)2311 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2312 {
2313 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2314
2315 if (status) {
2316 hci_conn_check_pending(hdev);
2317 return;
2318 }
2319
2320 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2321 set_bit(HCI_INQUIRY, &hdev->flags);
2322 }
2323
hci_cs_create_conn(struct hci_dev * hdev,__u8 status)2324 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2325 {
2326 struct hci_cp_create_conn *cp;
2327 struct hci_conn *conn;
2328
2329 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2330
2331 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2332 if (!cp)
2333 return;
2334
2335 hci_dev_lock(hdev);
2336
2337 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2338
2339 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2340
2341 if (status) {
2342 if (conn && conn->state == BT_CONNECT) {
2343 if (status != 0x0c || conn->attempt > 2) {
2344 conn->state = BT_CLOSED;
2345 hci_connect_cfm(conn, status);
2346 hci_conn_del(conn);
2347 } else
2348 conn->state = BT_CONNECT2;
2349 }
2350 } else {
2351 if (!conn) {
2352 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2353 HCI_ROLE_MASTER);
2354 if (!conn)
2355 bt_dev_err(hdev, "no memory for new connection");
2356 }
2357 }
2358
2359 hci_dev_unlock(hdev);
2360 }
2361
hci_cs_add_sco(struct hci_dev * hdev,__u8 status)2362 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2363 {
2364 struct hci_cp_add_sco *cp;
2365 struct hci_conn *acl;
2366 struct hci_link *link;
2367 __u16 handle;
2368
2369 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2370
2371 if (!status)
2372 return;
2373
2374 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2375 if (!cp)
2376 return;
2377
2378 handle = __le16_to_cpu(cp->handle);
2379
2380 bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2381
2382 hci_dev_lock(hdev);
2383
2384 acl = hci_conn_hash_lookup_handle(hdev, handle);
2385 if (acl) {
2386 link = list_first_entry_or_null(&acl->link_list,
2387 struct hci_link, list);
2388 if (link && link->conn) {
2389 link->conn->state = BT_CLOSED;
2390
2391 hci_connect_cfm(link->conn, status);
2392 hci_conn_del(link->conn);
2393 }
2394 }
2395
2396 hci_dev_unlock(hdev);
2397 }
2398
hci_cs_auth_requested(struct hci_dev * hdev,__u8 status)2399 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2400 {
2401 struct hci_cp_auth_requested *cp;
2402 struct hci_conn *conn;
2403
2404 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2405
2406 if (!status)
2407 return;
2408
2409 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2410 if (!cp)
2411 return;
2412
2413 hci_dev_lock(hdev);
2414
2415 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2416 if (conn) {
2417 if (conn->state == BT_CONFIG) {
2418 hci_connect_cfm(conn, status);
2419 hci_conn_drop(conn);
2420 }
2421 }
2422
2423 hci_dev_unlock(hdev);
2424 }
2425
hci_cs_set_conn_encrypt(struct hci_dev * hdev,__u8 status)2426 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2427 {
2428 struct hci_cp_set_conn_encrypt *cp;
2429 struct hci_conn *conn;
2430
2431 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2432
2433 if (!status)
2434 return;
2435
2436 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2437 if (!cp)
2438 return;
2439
2440 hci_dev_lock(hdev);
2441
2442 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2443 if (conn) {
2444 if (conn->state == BT_CONFIG) {
2445 hci_connect_cfm(conn, status);
2446 hci_conn_drop(conn);
2447 }
2448 }
2449
2450 hci_dev_unlock(hdev);
2451 }
2452
hci_outgoing_auth_needed(struct hci_dev * hdev,struct hci_conn * conn)2453 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2454 struct hci_conn *conn)
2455 {
2456 if (conn->state != BT_CONFIG || !conn->out)
2457 return 0;
2458
2459 if (conn->pending_sec_level == BT_SECURITY_SDP)
2460 return 0;
2461
2462 /* Only request authentication for SSP connections or non-SSP
2463 * devices with sec_level MEDIUM or HIGH or if MITM protection
2464 * is requested.
2465 */
2466 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2467 conn->pending_sec_level != BT_SECURITY_FIPS &&
2468 conn->pending_sec_level != BT_SECURITY_HIGH &&
2469 conn->pending_sec_level != BT_SECURITY_MEDIUM)
2470 return 0;
2471
2472 return 1;
2473 }
2474
hci_resolve_name(struct hci_dev * hdev,struct inquiry_entry * e)2475 static int hci_resolve_name(struct hci_dev *hdev,
2476 struct inquiry_entry *e)
2477 {
2478 struct hci_cp_remote_name_req cp;
2479
2480 memset(&cp, 0, sizeof(cp));
2481
2482 bacpy(&cp.bdaddr, &e->data.bdaddr);
2483 cp.pscan_rep_mode = e->data.pscan_rep_mode;
2484 cp.pscan_mode = e->data.pscan_mode;
2485 cp.clock_offset = e->data.clock_offset;
2486
2487 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2488 }
2489
hci_resolve_next_name(struct hci_dev * hdev)2490 static bool hci_resolve_next_name(struct hci_dev *hdev)
2491 {
2492 struct discovery_state *discov = &hdev->discovery;
2493 struct inquiry_entry *e;
2494
2495 if (list_empty(&discov->resolve))
2496 return false;
2497
2498 /* We should stop if we already spent too much time resolving names. */
2499 if (time_after(jiffies, discov->name_resolve_timeout)) {
2500 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2501 return false;
2502 }
2503
2504 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2505 if (!e)
2506 return false;
2507
2508 if (hci_resolve_name(hdev, e) == 0) {
2509 e->name_state = NAME_PENDING;
2510 return true;
2511 }
2512
2513 return false;
2514 }
2515
hci_check_pending_name(struct hci_dev * hdev,struct hci_conn * conn,bdaddr_t * bdaddr,u8 * name,u8 name_len)2516 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2517 bdaddr_t *bdaddr, u8 *name, u8 name_len)
2518 {
2519 struct discovery_state *discov = &hdev->discovery;
2520 struct inquiry_entry *e;
2521
2522 /* Update the mgmt connected state if necessary. Be careful with
2523 * conn objects that exist but are not (yet) connected however.
2524 * Only those in BT_CONFIG or BT_CONNECTED states can be
2525 * considered connected.
2526 */
2527 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED))
2528 mgmt_device_connected(hdev, conn, name, name_len);
2529
2530 if (discov->state == DISCOVERY_STOPPED)
2531 return;
2532
2533 if (discov->state == DISCOVERY_STOPPING)
2534 goto discov_complete;
2535
2536 if (discov->state != DISCOVERY_RESOLVING)
2537 return;
2538
2539 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2540 /* If the device was not found in a list of found devices names of which
2541 * are pending. there is no need to continue resolving a next name as it
2542 * will be done upon receiving another Remote Name Request Complete
2543 * Event */
2544 if (!e)
2545 return;
2546
2547 list_del(&e->list);
2548
2549 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2550 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2551 name, name_len);
2552
2553 if (hci_resolve_next_name(hdev))
2554 return;
2555
2556 discov_complete:
2557 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2558 }
2559
hci_cs_remote_name_req(struct hci_dev * hdev,__u8 status)2560 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2561 {
2562 struct hci_cp_remote_name_req *cp;
2563 struct hci_conn *conn;
2564
2565 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2566
2567 /* If successful wait for the name req complete event before
2568 * checking for the need to do authentication */
2569 if (!status)
2570 return;
2571
2572 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2573 if (!cp)
2574 return;
2575
2576 hci_dev_lock(hdev);
2577
2578 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2579
2580 if (hci_dev_test_flag(hdev, HCI_MGMT))
2581 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2582
2583 if (!conn)
2584 goto unlock;
2585
2586 if (!hci_outgoing_auth_needed(hdev, conn))
2587 goto unlock;
2588
2589 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2590 struct hci_cp_auth_requested auth_cp;
2591
2592 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2593
2594 auth_cp.handle = __cpu_to_le16(conn->handle);
2595 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2596 sizeof(auth_cp), &auth_cp);
2597 }
2598
2599 unlock:
2600 hci_dev_unlock(hdev);
2601 }
2602
hci_cs_read_remote_features(struct hci_dev * hdev,__u8 status)2603 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2604 {
2605 struct hci_cp_read_remote_features *cp;
2606 struct hci_conn *conn;
2607
2608 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2609
2610 if (!status)
2611 return;
2612
2613 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2614 if (!cp)
2615 return;
2616
2617 hci_dev_lock(hdev);
2618
2619 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2620 if (conn) {
2621 if (conn->state == BT_CONFIG) {
2622 hci_connect_cfm(conn, status);
2623 hci_conn_drop(conn);
2624 }
2625 }
2626
2627 hci_dev_unlock(hdev);
2628 }
2629
hci_cs_read_remote_ext_features(struct hci_dev * hdev,__u8 status)2630 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2631 {
2632 struct hci_cp_read_remote_ext_features *cp;
2633 struct hci_conn *conn;
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_READ_REMOTE_EXT_FEATURES);
2641 if (!cp)
2642 return;
2643
2644 hci_dev_lock(hdev);
2645
2646 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2647 if (conn) {
2648 if (conn->state == BT_CONFIG) {
2649 hci_connect_cfm(conn, status);
2650 hci_conn_drop(conn);
2651 }
2652 }
2653
2654 hci_dev_unlock(hdev);
2655 }
2656
hci_setup_sync_conn_status(struct hci_dev * hdev,__u16 handle,__u8 status)2657 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2658 __u8 status)
2659 {
2660 struct hci_conn *acl;
2661 struct hci_link *link;
2662
2663 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2664
2665 hci_dev_lock(hdev);
2666
2667 acl = hci_conn_hash_lookup_handle(hdev, handle);
2668 if (acl) {
2669 link = list_first_entry_or_null(&acl->link_list,
2670 struct hci_link, list);
2671 if (link && link->conn) {
2672 link->conn->state = BT_CLOSED;
2673
2674 hci_connect_cfm(link->conn, status);
2675 hci_conn_del(link->conn);
2676 }
2677 }
2678
2679 hci_dev_unlock(hdev);
2680 }
2681
hci_cs_setup_sync_conn(struct hci_dev * hdev,__u8 status)2682 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2683 {
2684 struct hci_cp_setup_sync_conn *cp;
2685
2686 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2687
2688 if (!status)
2689 return;
2690
2691 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2692 if (!cp)
2693 return;
2694
2695 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2696 }
2697
hci_cs_enhanced_setup_sync_conn(struct hci_dev * hdev,__u8 status)2698 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2699 {
2700 struct hci_cp_enhanced_setup_sync_conn *cp;
2701
2702 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2703
2704 if (!status)
2705 return;
2706
2707 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2708 if (!cp)
2709 return;
2710
2711 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2712 }
2713
hci_cs_sniff_mode(struct hci_dev * hdev,__u8 status)2714 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2715 {
2716 struct hci_cp_sniff_mode *cp;
2717 struct hci_conn *conn;
2718
2719 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2720
2721 if (!status)
2722 return;
2723
2724 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2725 if (!cp)
2726 return;
2727
2728 hci_dev_lock(hdev);
2729
2730 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2731 if (conn) {
2732 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2733
2734 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2735 hci_sco_setup(conn, status);
2736 }
2737
2738 hci_dev_unlock(hdev);
2739 }
2740
hci_cs_exit_sniff_mode(struct hci_dev * hdev,__u8 status)2741 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2742 {
2743 struct hci_cp_exit_sniff_mode *cp;
2744 struct hci_conn *conn;
2745
2746 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2747
2748 if (!status)
2749 return;
2750
2751 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2752 if (!cp)
2753 return;
2754
2755 hci_dev_lock(hdev);
2756
2757 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2758 if (conn) {
2759 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2760
2761 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2762 hci_sco_setup(conn, status);
2763 }
2764
2765 hci_dev_unlock(hdev);
2766 }
2767
hci_cs_disconnect(struct hci_dev * hdev,u8 status)2768 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2769 {
2770 struct hci_cp_disconnect *cp;
2771 struct hci_conn_params *params;
2772 struct hci_conn *conn;
2773 bool mgmt_conn;
2774
2775 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2776
2777 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2778 * otherwise cleanup the connection immediately.
2779 */
2780 if (!status && !hdev->suspended)
2781 return;
2782
2783 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2784 if (!cp)
2785 return;
2786
2787 hci_dev_lock(hdev);
2788
2789 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2790 if (!conn)
2791 goto unlock;
2792
2793 if (status) {
2794 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2795 conn->dst_type, status);
2796
2797 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2798 hdev->cur_adv_instance = conn->adv_instance;
2799 hci_enable_advertising(hdev);
2800 }
2801
2802 /* Inform sockets conn is gone before we delete it */
2803 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2804
2805 goto done;
2806 }
2807
2808 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2809
2810 if (conn->type == ACL_LINK) {
2811 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2812 hci_remove_link_key(hdev, &conn->dst);
2813 }
2814
2815 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2816 if (params) {
2817 switch (params->auto_connect) {
2818 case HCI_AUTO_CONN_LINK_LOSS:
2819 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2820 break;
2821 fallthrough;
2822
2823 case HCI_AUTO_CONN_DIRECT:
2824 case HCI_AUTO_CONN_ALWAYS:
2825 hci_pend_le_list_del_init(params);
2826 hci_pend_le_list_add(params, &hdev->pend_le_conns);
2827 break;
2828
2829 default:
2830 break;
2831 }
2832 }
2833
2834 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2835 cp->reason, mgmt_conn);
2836
2837 hci_disconn_cfm(conn, cp->reason);
2838
2839 done:
2840 /* If the disconnection failed for any reason, the upper layer
2841 * does not retry to disconnect in current implementation.
2842 * Hence, we need to do some basic cleanup here and re-enable
2843 * advertising if necessary.
2844 */
2845 hci_conn_del(conn);
2846 unlock:
2847 hci_dev_unlock(hdev);
2848 }
2849
ev_bdaddr_type(struct hci_dev * hdev,u8 type,bool * resolved)2850 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2851 {
2852 /* When using controller based address resolution, then the new
2853 * address types 0x02 and 0x03 are used. These types need to be
2854 * converted back into either public address or random address type
2855 */
2856 switch (type) {
2857 case ADDR_LE_DEV_PUBLIC_RESOLVED:
2858 if (resolved)
2859 *resolved = true;
2860 return ADDR_LE_DEV_PUBLIC;
2861 case ADDR_LE_DEV_RANDOM_RESOLVED:
2862 if (resolved)
2863 *resolved = true;
2864 return ADDR_LE_DEV_RANDOM;
2865 }
2866
2867 if (resolved)
2868 *resolved = false;
2869 return type;
2870 }
2871
cs_le_create_conn(struct hci_dev * hdev,bdaddr_t * peer_addr,u8 peer_addr_type,u8 own_address_type,u8 filter_policy)2872 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2873 u8 peer_addr_type, u8 own_address_type,
2874 u8 filter_policy)
2875 {
2876 struct hci_conn *conn;
2877
2878 conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2879 peer_addr_type);
2880 if (!conn)
2881 return;
2882
2883 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2884
2885 /* Store the initiator and responder address information which
2886 * is needed for SMP. These values will not change during the
2887 * lifetime of the connection.
2888 */
2889 conn->init_addr_type = own_address_type;
2890 if (own_address_type == ADDR_LE_DEV_RANDOM)
2891 bacpy(&conn->init_addr, &hdev->random_addr);
2892 else
2893 bacpy(&conn->init_addr, &hdev->bdaddr);
2894
2895 conn->resp_addr_type = peer_addr_type;
2896 bacpy(&conn->resp_addr, peer_addr);
2897 }
2898
hci_cs_le_create_conn(struct hci_dev * hdev,u8 status)2899 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2900 {
2901 struct hci_cp_le_create_conn *cp;
2902
2903 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2904
2905 /* All connection failure handling is taken care of by the
2906 * hci_conn_failed function which is triggered by the HCI
2907 * request completion callbacks used for connecting.
2908 */
2909 if (status)
2910 return;
2911
2912 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2913 if (!cp)
2914 return;
2915
2916 hci_dev_lock(hdev);
2917
2918 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2919 cp->own_address_type, cp->filter_policy);
2920
2921 hci_dev_unlock(hdev);
2922 }
2923
hci_cs_le_ext_create_conn(struct hci_dev * hdev,u8 status)2924 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2925 {
2926 struct hci_cp_le_ext_create_conn *cp;
2927
2928 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2929
2930 /* All connection failure handling is taken care of by the
2931 * hci_conn_failed function which is triggered by the HCI
2932 * request completion callbacks used for connecting.
2933 */
2934 if (status)
2935 return;
2936
2937 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2938 if (!cp)
2939 return;
2940
2941 hci_dev_lock(hdev);
2942
2943 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2944 cp->own_addr_type, cp->filter_policy);
2945
2946 hci_dev_unlock(hdev);
2947 }
2948
hci_cs_le_read_remote_features(struct hci_dev * hdev,u8 status)2949 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2950 {
2951 struct hci_cp_le_read_remote_features *cp;
2952 struct hci_conn *conn;
2953
2954 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2955
2956 if (!status)
2957 return;
2958
2959 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2960 if (!cp)
2961 return;
2962
2963 hci_dev_lock(hdev);
2964
2965 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2966 if (conn) {
2967 if (conn->state == BT_CONFIG) {
2968 hci_connect_cfm(conn, status);
2969 hci_conn_drop(conn);
2970 }
2971 }
2972
2973 hci_dev_unlock(hdev);
2974 }
2975
hci_cs_le_start_enc(struct hci_dev * hdev,u8 status)2976 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2977 {
2978 struct hci_cp_le_start_enc *cp;
2979 struct hci_conn *conn;
2980
2981 bt_dev_dbg(hdev, "status 0x%2.2x", status);
2982
2983 if (!status)
2984 return;
2985
2986 hci_dev_lock(hdev);
2987
2988 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2989 if (!cp)
2990 goto unlock;
2991
2992 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2993 if (!conn)
2994 goto unlock;
2995
2996 if (conn->state != BT_CONNECTED)
2997 goto unlock;
2998
2999 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3000 hci_conn_drop(conn);
3001
3002 unlock:
3003 hci_dev_unlock(hdev);
3004 }
3005
hci_cs_switch_role(struct hci_dev * hdev,u8 status)3006 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3007 {
3008 struct hci_cp_switch_role *cp;
3009 struct hci_conn *conn;
3010
3011 BT_DBG("%s status 0x%2.2x", hdev->name, status);
3012
3013 if (!status)
3014 return;
3015
3016 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3017 if (!cp)
3018 return;
3019
3020 hci_dev_lock(hdev);
3021
3022 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3023 if (conn)
3024 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3025
3026 hci_dev_unlock(hdev);
3027 }
3028
hci_inquiry_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3029 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3030 struct sk_buff *skb)
3031 {
3032 struct hci_ev_status *ev = data;
3033 struct discovery_state *discov = &hdev->discovery;
3034 struct inquiry_entry *e;
3035
3036 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3037
3038 hci_conn_check_pending(hdev);
3039
3040 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3041 return;
3042
3043 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3044 wake_up_bit(&hdev->flags, HCI_INQUIRY);
3045
3046 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3047 return;
3048
3049 hci_dev_lock(hdev);
3050
3051 if (discov->state != DISCOVERY_FINDING)
3052 goto unlock;
3053
3054 if (list_empty(&discov->resolve)) {
3055 /* When BR/EDR inquiry is active and no LE scanning is in
3056 * progress, then change discovery state to indicate completion.
3057 *
3058 * When running LE scanning and BR/EDR inquiry simultaneously
3059 * and the LE scan already finished, then change the discovery
3060 * state to indicate completion.
3061 */
3062 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3063 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3064 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3065 goto unlock;
3066 }
3067
3068 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3069 if (e && hci_resolve_name(hdev, e) == 0) {
3070 e->name_state = NAME_PENDING;
3071 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3072 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3073 } else {
3074 /* When BR/EDR inquiry is active and no LE scanning is in
3075 * progress, then change discovery state to indicate completion.
3076 *
3077 * When running LE scanning and BR/EDR inquiry simultaneously
3078 * and the LE scan already finished, then change the discovery
3079 * state to indicate completion.
3080 */
3081 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3082 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3083 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3084 }
3085
3086 unlock:
3087 hci_dev_unlock(hdev);
3088 }
3089
hci_inquiry_result_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)3090 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3091 struct sk_buff *skb)
3092 {
3093 struct hci_ev_inquiry_result *ev = edata;
3094 struct inquiry_data data;
3095 int i;
3096
3097 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3098 flex_array_size(ev, info, ev->num)))
3099 return;
3100
3101 bt_dev_dbg(hdev, "num %d", ev->num);
3102
3103 if (!ev->num)
3104 return;
3105
3106 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3107 return;
3108
3109 hci_dev_lock(hdev);
3110
3111 for (i = 0; i < ev->num; i++) {
3112 struct inquiry_info *info = &ev->info[i];
3113 u32 flags;
3114
3115 bacpy(&data.bdaddr, &info->bdaddr);
3116 data.pscan_rep_mode = info->pscan_rep_mode;
3117 data.pscan_period_mode = info->pscan_period_mode;
3118 data.pscan_mode = info->pscan_mode;
3119 memcpy(data.dev_class, info->dev_class, 3);
3120 data.clock_offset = info->clock_offset;
3121 data.rssi = HCI_RSSI_INVALID;
3122 data.ssp_mode = 0x00;
3123
3124 flags = hci_inquiry_cache_update(hdev, &data, false);
3125
3126 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3127 info->dev_class, HCI_RSSI_INVALID,
3128 flags, NULL, 0, NULL, 0, 0);
3129 }
3130
3131 hci_dev_unlock(hdev);
3132 }
3133
hci_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3134 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3135 struct sk_buff *skb)
3136 {
3137 struct hci_ev_conn_complete *ev = data;
3138 struct hci_conn *conn;
3139 u8 status = ev->status;
3140
3141 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3142
3143 hci_dev_lock(hdev);
3144
3145 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3146 if (!conn) {
3147 /* In case of error status and there is no connection pending
3148 * just unlock as there is nothing to cleanup.
3149 */
3150 if (ev->status)
3151 goto unlock;
3152
3153 /* Connection may not exist if auto-connected. Check the bredr
3154 * allowlist to see if this device is allowed to auto connect.
3155 * If link is an ACL type, create a connection class
3156 * automatically.
3157 *
3158 * Auto-connect will only occur if the event filter is
3159 * programmed with a given address. Right now, event filter is
3160 * only used during suspend.
3161 */
3162 if (ev->link_type == ACL_LINK &&
3163 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3164 &ev->bdaddr,
3165 BDADDR_BREDR)) {
3166 conn = hci_conn_add_unset(hdev, ev->link_type,
3167 &ev->bdaddr, HCI_ROLE_SLAVE);
3168 if (!conn) {
3169 bt_dev_err(hdev, "no memory for new conn");
3170 goto unlock;
3171 }
3172 } else {
3173 if (ev->link_type != SCO_LINK)
3174 goto unlock;
3175
3176 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3177 &ev->bdaddr);
3178 if (!conn)
3179 goto unlock;
3180
3181 conn->type = SCO_LINK;
3182 }
3183 }
3184
3185 /* The HCI_Connection_Complete event is only sent once per connection.
3186 * Processing it more than once per connection can corrupt kernel memory.
3187 *
3188 * As the connection handle is set here for the first time, it indicates
3189 * whether the connection is already set up.
3190 */
3191 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3192 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3193 goto unlock;
3194 }
3195
3196 if (!status) {
3197 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3198 if (status)
3199 goto done;
3200
3201 if (conn->type == ACL_LINK) {
3202 conn->state = BT_CONFIG;
3203 hci_conn_hold(conn);
3204
3205 if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3206 !hci_find_link_key(hdev, &ev->bdaddr))
3207 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3208 else
3209 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3210 } else
3211 conn->state = BT_CONNECTED;
3212
3213 hci_debugfs_create_conn(conn);
3214 hci_conn_add_sysfs(conn);
3215
3216 if (test_bit(HCI_AUTH, &hdev->flags))
3217 set_bit(HCI_CONN_AUTH, &conn->flags);
3218
3219 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3220 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3221
3222 /* Get remote features */
3223 if (conn->type == ACL_LINK) {
3224 struct hci_cp_read_remote_features cp;
3225 cp.handle = ev->handle;
3226 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3227 sizeof(cp), &cp);
3228
3229 hci_update_scan(hdev);
3230 }
3231
3232 /* Set packet type for incoming connection */
3233 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3234 struct hci_cp_change_conn_ptype cp;
3235 cp.handle = ev->handle;
3236 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3237 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3238 &cp);
3239 }
3240 }
3241
3242 if (conn->type == ACL_LINK)
3243 hci_sco_setup(conn, ev->status);
3244
3245 done:
3246 if (status) {
3247 hci_conn_failed(conn, status);
3248 } else if (ev->link_type == SCO_LINK) {
3249 switch (conn->setting & SCO_AIRMODE_MASK) {
3250 case SCO_AIRMODE_CVSD:
3251 if (hdev->notify)
3252 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3253 break;
3254 }
3255
3256 hci_connect_cfm(conn, status);
3257 }
3258
3259 unlock:
3260 hci_dev_unlock(hdev);
3261
3262 hci_conn_check_pending(hdev);
3263 }
3264
hci_reject_conn(struct hci_dev * hdev,bdaddr_t * bdaddr)3265 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3266 {
3267 struct hci_cp_reject_conn_req cp;
3268
3269 bacpy(&cp.bdaddr, bdaddr);
3270 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3271 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3272 }
3273
hci_conn_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3274 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3275 struct sk_buff *skb)
3276 {
3277 struct hci_ev_conn_request *ev = data;
3278 int mask = hdev->link_mode;
3279 struct inquiry_entry *ie;
3280 struct hci_conn *conn;
3281 __u8 flags = 0;
3282
3283 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3284
3285 /* Reject incoming connection from device with same BD ADDR against
3286 * CVE-2020-26555
3287 */
3288 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3289 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3290 &ev->bdaddr);
3291 hci_reject_conn(hdev, &ev->bdaddr);
3292 return;
3293 }
3294
3295 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3296 &flags);
3297
3298 if (!(mask & HCI_LM_ACCEPT)) {
3299 hci_reject_conn(hdev, &ev->bdaddr);
3300 return;
3301 }
3302
3303 hci_dev_lock(hdev);
3304
3305 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3306 BDADDR_BREDR)) {
3307 hci_reject_conn(hdev, &ev->bdaddr);
3308 goto unlock;
3309 }
3310
3311 /* Require HCI_CONNECTABLE or an accept list entry to accept the
3312 * connection. These features are only touched through mgmt so
3313 * only do the checks if HCI_MGMT is set.
3314 */
3315 if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3316 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3317 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3318 BDADDR_BREDR)) {
3319 hci_reject_conn(hdev, &ev->bdaddr);
3320 goto unlock;
3321 }
3322
3323 /* Connection accepted */
3324
3325 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3326 if (ie)
3327 memcpy(ie->data.dev_class, ev->dev_class, 3);
3328
3329 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3330 &ev->bdaddr);
3331 if (!conn) {
3332 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3333 HCI_ROLE_SLAVE);
3334 if (!conn) {
3335 bt_dev_err(hdev, "no memory for new connection");
3336 goto unlock;
3337 }
3338 }
3339
3340 memcpy(conn->dev_class, ev->dev_class, 3);
3341
3342 hci_dev_unlock(hdev);
3343
3344 if (ev->link_type == ACL_LINK ||
3345 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3346 struct hci_cp_accept_conn_req cp;
3347 conn->state = BT_CONNECT;
3348
3349 bacpy(&cp.bdaddr, &ev->bdaddr);
3350
3351 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3352 cp.role = 0x00; /* Become central */
3353 else
3354 cp.role = 0x01; /* Remain peripheral */
3355
3356 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3357 } else if (!(flags & HCI_PROTO_DEFER)) {
3358 struct hci_cp_accept_sync_conn_req cp;
3359 conn->state = BT_CONNECT;
3360
3361 bacpy(&cp.bdaddr, &ev->bdaddr);
3362 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3363
3364 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
3365 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
3366 cp.max_latency = cpu_to_le16(0xffff);
3367 cp.content_format = cpu_to_le16(hdev->voice_setting);
3368 cp.retrans_effort = 0xff;
3369
3370 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3371 &cp);
3372 } else {
3373 conn->state = BT_CONNECT2;
3374 hci_connect_cfm(conn, 0);
3375 }
3376
3377 return;
3378 unlock:
3379 hci_dev_unlock(hdev);
3380 }
3381
hci_to_mgmt_reason(u8 err)3382 static u8 hci_to_mgmt_reason(u8 err)
3383 {
3384 switch (err) {
3385 case HCI_ERROR_CONNECTION_TIMEOUT:
3386 return MGMT_DEV_DISCONN_TIMEOUT;
3387 case HCI_ERROR_REMOTE_USER_TERM:
3388 case HCI_ERROR_REMOTE_LOW_RESOURCES:
3389 case HCI_ERROR_REMOTE_POWER_OFF:
3390 return MGMT_DEV_DISCONN_REMOTE;
3391 case HCI_ERROR_LOCAL_HOST_TERM:
3392 return MGMT_DEV_DISCONN_LOCAL_HOST;
3393 default:
3394 return MGMT_DEV_DISCONN_UNKNOWN;
3395 }
3396 }
3397
hci_disconn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3398 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3399 struct sk_buff *skb)
3400 {
3401 struct hci_ev_disconn_complete *ev = data;
3402 u8 reason;
3403 struct hci_conn_params *params;
3404 struct hci_conn *conn;
3405 bool mgmt_connected;
3406
3407 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3408
3409 hci_dev_lock(hdev);
3410
3411 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3412 if (!conn)
3413 goto unlock;
3414
3415 if (ev->status) {
3416 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3417 conn->dst_type, ev->status);
3418 goto unlock;
3419 }
3420
3421 conn->state = BT_CLOSED;
3422
3423 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3424
3425 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3426 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3427 else
3428 reason = hci_to_mgmt_reason(ev->reason);
3429
3430 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3431 reason, mgmt_connected);
3432
3433 if (conn->type == ACL_LINK) {
3434 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3435 hci_remove_link_key(hdev, &conn->dst);
3436
3437 hci_update_scan(hdev);
3438 }
3439
3440 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3441 if (params) {
3442 switch (params->auto_connect) {
3443 case HCI_AUTO_CONN_LINK_LOSS:
3444 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3445 break;
3446 fallthrough;
3447
3448 case HCI_AUTO_CONN_DIRECT:
3449 case HCI_AUTO_CONN_ALWAYS:
3450 hci_pend_le_list_del_init(params);
3451 hci_pend_le_list_add(params, &hdev->pend_le_conns);
3452 hci_update_passive_scan(hdev);
3453 break;
3454
3455 default:
3456 break;
3457 }
3458 }
3459
3460 hci_disconn_cfm(conn, ev->reason);
3461
3462 /* Re-enable advertising if necessary, since it might
3463 * have been disabled by the connection. From the
3464 * HCI_LE_Set_Advertise_Enable command description in
3465 * the core specification (v4.0):
3466 * "The Controller shall continue advertising until the Host
3467 * issues an LE_Set_Advertise_Enable command with
3468 * Advertising_Enable set to 0x00 (Advertising is disabled)
3469 * or until a connection is created or until the Advertising
3470 * is timed out due to Directed Advertising."
3471 */
3472 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3473 hdev->cur_adv_instance = conn->adv_instance;
3474 hci_enable_advertising(hdev);
3475 }
3476
3477 hci_conn_del(conn);
3478
3479 unlock:
3480 hci_dev_unlock(hdev);
3481 }
3482
hci_auth_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3483 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3484 struct sk_buff *skb)
3485 {
3486 struct hci_ev_auth_complete *ev = data;
3487 struct hci_conn *conn;
3488
3489 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3490
3491 hci_dev_lock(hdev);
3492
3493 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3494 if (!conn)
3495 goto unlock;
3496
3497 if (!ev->status) {
3498 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3499 set_bit(HCI_CONN_AUTH, &conn->flags);
3500 conn->sec_level = conn->pending_sec_level;
3501 } else {
3502 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3503 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3504
3505 mgmt_auth_failed(conn, ev->status);
3506 }
3507
3508 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3509
3510 if (conn->state == BT_CONFIG) {
3511 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3512 struct hci_cp_set_conn_encrypt cp;
3513 cp.handle = ev->handle;
3514 cp.encrypt = 0x01;
3515 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3516 &cp);
3517 } else {
3518 conn->state = BT_CONNECTED;
3519 hci_connect_cfm(conn, ev->status);
3520 hci_conn_drop(conn);
3521 }
3522 } else {
3523 hci_auth_cfm(conn, ev->status);
3524
3525 hci_conn_hold(conn);
3526 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3527 hci_conn_drop(conn);
3528 }
3529
3530 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3531 if (!ev->status) {
3532 struct hci_cp_set_conn_encrypt cp;
3533 cp.handle = ev->handle;
3534 cp.encrypt = 0x01;
3535 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3536 &cp);
3537 } else {
3538 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3539 hci_encrypt_cfm(conn, ev->status);
3540 }
3541 }
3542
3543 unlock:
3544 hci_dev_unlock(hdev);
3545 }
3546
hci_remote_name_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3547 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3548 struct sk_buff *skb)
3549 {
3550 struct hci_ev_remote_name *ev = data;
3551 struct hci_conn *conn;
3552
3553 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3554
3555 hci_dev_lock(hdev);
3556
3557 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3558
3559 if (!hci_dev_test_flag(hdev, HCI_MGMT))
3560 goto check_auth;
3561
3562 if (ev->status == 0)
3563 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3564 strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3565 else
3566 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3567
3568 check_auth:
3569 if (!conn)
3570 goto unlock;
3571
3572 if (!hci_outgoing_auth_needed(hdev, conn))
3573 goto unlock;
3574
3575 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3576 struct hci_cp_auth_requested cp;
3577
3578 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3579
3580 cp.handle = __cpu_to_le16(conn->handle);
3581 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3582 }
3583
3584 unlock:
3585 hci_dev_unlock(hdev);
3586 }
3587
hci_encrypt_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3588 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3589 struct sk_buff *skb)
3590 {
3591 struct hci_ev_encrypt_change *ev = data;
3592 struct hci_conn *conn;
3593
3594 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3595
3596 hci_dev_lock(hdev);
3597
3598 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3599 if (!conn)
3600 goto unlock;
3601
3602 if (!ev->status) {
3603 if (ev->encrypt) {
3604 /* Encryption implies authentication */
3605 set_bit(HCI_CONN_AUTH, &conn->flags);
3606 set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3607 conn->sec_level = conn->pending_sec_level;
3608
3609 /* P-256 authentication key implies FIPS */
3610 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3611 set_bit(HCI_CONN_FIPS, &conn->flags);
3612
3613 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3614 conn->type == LE_LINK)
3615 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3616 } else {
3617 clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3618 clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3619 }
3620 }
3621
3622 /* We should disregard the current RPA and generate a new one
3623 * whenever the encryption procedure fails.
3624 */
3625 if (ev->status && conn->type == LE_LINK) {
3626 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3627 hci_adv_instances_set_rpa_expired(hdev, true);
3628 }
3629
3630 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3631
3632 /* Check link security requirements are met */
3633 if (!hci_conn_check_link_mode(conn))
3634 ev->status = HCI_ERROR_AUTH_FAILURE;
3635
3636 if (ev->status && conn->state == BT_CONNECTED) {
3637 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3638 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3639
3640 /* Notify upper layers so they can cleanup before
3641 * disconnecting.
3642 */
3643 hci_encrypt_cfm(conn, ev->status);
3644 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3645 hci_conn_drop(conn);
3646 goto unlock;
3647 }
3648
3649 /* Try reading the encryption key size for encrypted ACL links */
3650 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3651 struct hci_cp_read_enc_key_size cp;
3652
3653 /* Only send HCI_Read_Encryption_Key_Size if the
3654 * controller really supports it. If it doesn't, assume
3655 * the default size (16).
3656 */
3657 if (!(hdev->commands[20] & 0x10)) {
3658 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3659 goto notify;
3660 }
3661
3662 cp.handle = cpu_to_le16(conn->handle);
3663 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3664 sizeof(cp), &cp)) {
3665 bt_dev_err(hdev, "sending read key size failed");
3666 conn->enc_key_size = HCI_LINK_KEY_SIZE;
3667 goto notify;
3668 }
3669
3670 goto unlock;
3671 }
3672
3673 /* Set the default Authenticated Payload Timeout after
3674 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3675 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3676 * sent when the link is active and Encryption is enabled, the conn
3677 * type can be either LE or ACL and controller must support LMP Ping.
3678 * Ensure for AES-CCM encryption as well.
3679 */
3680 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3681 test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3682 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3683 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3684 struct hci_cp_write_auth_payload_to cp;
3685
3686 cp.handle = cpu_to_le16(conn->handle);
3687 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3688 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3689 sizeof(cp), &cp))
3690 bt_dev_err(hdev, "write auth payload timeout failed");
3691 }
3692
3693 notify:
3694 hci_encrypt_cfm(conn, ev->status);
3695
3696 unlock:
3697 hci_dev_unlock(hdev);
3698 }
3699
hci_change_link_key_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3700 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3701 struct sk_buff *skb)
3702 {
3703 struct hci_ev_change_link_key_complete *ev = data;
3704 struct hci_conn *conn;
3705
3706 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3707
3708 hci_dev_lock(hdev);
3709
3710 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3711 if (conn) {
3712 if (!ev->status)
3713 set_bit(HCI_CONN_SECURE, &conn->flags);
3714
3715 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3716
3717 hci_key_change_cfm(conn, ev->status);
3718 }
3719
3720 hci_dev_unlock(hdev);
3721 }
3722
hci_remote_features_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)3723 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3724 struct sk_buff *skb)
3725 {
3726 struct hci_ev_remote_features *ev = data;
3727 struct hci_conn *conn;
3728
3729 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3730
3731 hci_dev_lock(hdev);
3732
3733 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3734 if (!conn)
3735 goto unlock;
3736
3737 if (!ev->status)
3738 memcpy(conn->features[0], ev->features, 8);
3739
3740 if (conn->state != BT_CONFIG)
3741 goto unlock;
3742
3743 if (!ev->status && lmp_ext_feat_capable(hdev) &&
3744 lmp_ext_feat_capable(conn)) {
3745 struct hci_cp_read_remote_ext_features cp;
3746 cp.handle = ev->handle;
3747 cp.page = 0x01;
3748 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3749 sizeof(cp), &cp);
3750 goto unlock;
3751 }
3752
3753 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3754 struct hci_cp_remote_name_req cp;
3755 memset(&cp, 0, sizeof(cp));
3756 bacpy(&cp.bdaddr, &conn->dst);
3757 cp.pscan_rep_mode = 0x02;
3758 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3759 } else {
3760 mgmt_device_connected(hdev, conn, NULL, 0);
3761 }
3762
3763 if (!hci_outgoing_auth_needed(hdev, conn)) {
3764 conn->state = BT_CONNECTED;
3765 hci_connect_cfm(conn, ev->status);
3766 hci_conn_drop(conn);
3767 }
3768
3769 unlock:
3770 hci_dev_unlock(hdev);
3771 }
3772
handle_cmd_cnt_and_timer(struct hci_dev * hdev,u8 ncmd)3773 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3774 {
3775 cancel_delayed_work(&hdev->cmd_timer);
3776
3777 rcu_read_lock();
3778 if (!test_bit(HCI_RESET, &hdev->flags)) {
3779 if (ncmd) {
3780 cancel_delayed_work(&hdev->ncmd_timer);
3781 atomic_set(&hdev->cmd_cnt, 1);
3782 } else {
3783 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3784 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3785 HCI_NCMD_TIMEOUT);
3786 }
3787 }
3788 rcu_read_unlock();
3789 }
3790
hci_cc_le_read_buffer_size_v2(struct hci_dev * hdev,void * data,struct sk_buff * skb)3791 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3792 struct sk_buff *skb)
3793 {
3794 struct hci_rp_le_read_buffer_size_v2 *rp = data;
3795
3796 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3797
3798 if (rp->status)
3799 return rp->status;
3800
3801 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
3802 hdev->le_pkts = rp->acl_max_pkt;
3803 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
3804 hdev->iso_pkts = rp->iso_max_pkt;
3805
3806 hdev->le_cnt = hdev->le_pkts;
3807 hdev->iso_cnt = hdev->iso_pkts;
3808
3809 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3810 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3811
3812 return rp->status;
3813 }
3814
hci_unbound_cis_failed(struct hci_dev * hdev,u8 cig,u8 status)3815 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3816 {
3817 struct hci_conn *conn, *tmp;
3818
3819 lockdep_assert_held(&hdev->lock);
3820
3821 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3822 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3823 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3824 continue;
3825
3826 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3827 hci_conn_failed(conn, status);
3828 }
3829 }
3830
hci_cc_le_set_cig_params(struct hci_dev * hdev,void * data,struct sk_buff * skb)3831 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3832 struct sk_buff *skb)
3833 {
3834 struct hci_rp_le_set_cig_params *rp = data;
3835 struct hci_cp_le_set_cig_params *cp;
3836 struct hci_conn *conn;
3837 u8 status = rp->status;
3838 bool pending = false;
3839 int i;
3840
3841 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3842
3843 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3844 if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3845 rp->cig_id != cp->cig_id)) {
3846 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3847 status = HCI_ERROR_UNSPECIFIED;
3848 }
3849
3850 hci_dev_lock(hdev);
3851
3852 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3853 *
3854 * If the Status return parameter is non-zero, then the state of the CIG
3855 * and its CIS configurations shall not be changed by the command. If
3856 * the CIG did not already exist, it shall not be created.
3857 */
3858 if (status) {
3859 /* Keep current configuration, fail only the unbound CIS */
3860 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3861 goto unlock;
3862 }
3863
3864 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3865 *
3866 * If the Status return parameter is zero, then the Controller shall
3867 * set the Connection_Handle arrayed return parameter to the connection
3868 * handle(s) corresponding to the CIS configurations specified in
3869 * the CIS_IDs command parameter, in the same order.
3870 */
3871 for (i = 0; i < rp->num_handles; ++i) {
3872 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3873 cp->cis[i].cis_id);
3874 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3875 continue;
3876
3877 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3878 continue;
3879
3880 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3881 continue;
3882
3883 if (conn->state == BT_CONNECT)
3884 pending = true;
3885 }
3886
3887 unlock:
3888 if (pending)
3889 hci_le_create_cis_pending(hdev);
3890
3891 hci_dev_unlock(hdev);
3892
3893 return rp->status;
3894 }
3895
hci_cc_le_setup_iso_path(struct hci_dev * hdev,void * data,struct sk_buff * skb)3896 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3897 struct sk_buff *skb)
3898 {
3899 struct hci_rp_le_setup_iso_path *rp = data;
3900 struct hci_cp_le_setup_iso_path *cp;
3901 struct hci_conn *conn;
3902
3903 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3904
3905 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3906 if (!cp)
3907 return rp->status;
3908
3909 hci_dev_lock(hdev);
3910
3911 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3912 if (!conn)
3913 goto unlock;
3914
3915 if (rp->status) {
3916 hci_connect_cfm(conn, rp->status);
3917 hci_conn_del(conn);
3918 goto unlock;
3919 }
3920
3921 switch (cp->direction) {
3922 /* Input (Host to Controller) */
3923 case 0x00:
3924 /* Only confirm connection if output only */
3925 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3926 hci_connect_cfm(conn, rp->status);
3927 break;
3928 /* Output (Controller to Host) */
3929 case 0x01:
3930 /* Confirm connection since conn->iso_qos is always configured
3931 * last.
3932 */
3933 hci_connect_cfm(conn, rp->status);
3934
3935 /* Notify device connected in case it is a BIG Sync */
3936 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags))
3937 mgmt_device_connected(hdev, conn, NULL, 0);
3938
3939 break;
3940 }
3941
3942 unlock:
3943 hci_dev_unlock(hdev);
3944 return rp->status;
3945 }
3946
hci_cs_le_create_big(struct hci_dev * hdev,u8 status)3947 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3948 {
3949 bt_dev_dbg(hdev, "status 0x%2.2x", status);
3950 }
3951
hci_cc_set_per_adv_param(struct hci_dev * hdev,void * data,struct sk_buff * skb)3952 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3953 struct sk_buff *skb)
3954 {
3955 struct hci_ev_status *rp = data;
3956 struct hci_cp_le_set_per_adv_params *cp;
3957
3958 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3959
3960 if (rp->status)
3961 return rp->status;
3962
3963 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3964 if (!cp)
3965 return rp->status;
3966
3967 /* TODO: set the conn state */
3968 return rp->status;
3969 }
3970
hci_cc_le_set_per_adv_enable(struct hci_dev * hdev,void * data,struct sk_buff * skb)3971 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3972 struct sk_buff *skb)
3973 {
3974 struct hci_ev_status *rp = data;
3975 struct hci_cp_le_set_per_adv_enable *cp;
3976 struct adv_info *adv = NULL, *n;
3977 u8 per_adv_cnt = 0;
3978
3979 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3980
3981 if (rp->status)
3982 return rp->status;
3983
3984 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3985 if (!cp)
3986 return rp->status;
3987
3988 hci_dev_lock(hdev);
3989
3990 adv = hci_find_adv_instance(hdev, cp->handle);
3991
3992 if (cp->enable) {
3993 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3994
3995 if (adv)
3996 adv->enabled = true;
3997 } else {
3998 /* If just one instance was disabled check if there are
3999 * any other instance enabled before clearing HCI_LE_PER_ADV.
4000 * The current periodic adv instance will be marked as
4001 * disabled once extended advertising is also disabled.
4002 */
4003 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4004 list) {
4005 if (adv->periodic && adv->enabled)
4006 per_adv_cnt++;
4007 }
4008
4009 if (per_adv_cnt > 1)
4010 goto unlock;
4011
4012 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4013 }
4014
4015 unlock:
4016 hci_dev_unlock(hdev);
4017
4018 return rp->status;
4019 }
4020
4021 #define HCI_CC_VL(_op, _func, _min, _max) \
4022 { \
4023 .op = _op, \
4024 .func = _func, \
4025 .min_len = _min, \
4026 .max_len = _max, \
4027 }
4028
4029 #define HCI_CC(_op, _func, _len) \
4030 HCI_CC_VL(_op, _func, _len, _len)
4031
4032 #define HCI_CC_STATUS(_op, _func) \
4033 HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4034
4035 static const struct hci_cc {
4036 u16 op;
4037 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4038 u16 min_len;
4039 u16 max_len;
4040 } hci_cc_table[] = {
4041 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4042 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4043 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4044 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4045 hci_cc_remote_name_req_cancel),
4046 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4047 sizeof(struct hci_rp_role_discovery)),
4048 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4049 sizeof(struct hci_rp_read_link_policy)),
4050 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4051 sizeof(struct hci_rp_write_link_policy)),
4052 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4053 sizeof(struct hci_rp_read_def_link_policy)),
4054 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4055 hci_cc_write_def_link_policy),
4056 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4057 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4058 sizeof(struct hci_rp_read_stored_link_key)),
4059 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4060 sizeof(struct hci_rp_delete_stored_link_key)),
4061 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4062 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4063 sizeof(struct hci_rp_read_local_name)),
4064 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4065 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4066 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4067 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4068 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4069 sizeof(struct hci_rp_read_class_of_dev)),
4070 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4071 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4072 sizeof(struct hci_rp_read_voice_setting)),
4073 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4074 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4075 sizeof(struct hci_rp_read_num_supported_iac)),
4076 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4077 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4078 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4079 sizeof(struct hci_rp_read_auth_payload_to)),
4080 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4081 sizeof(struct hci_rp_write_auth_payload_to)),
4082 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4083 sizeof(struct hci_rp_read_local_version)),
4084 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4085 sizeof(struct hci_rp_read_local_commands)),
4086 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4087 sizeof(struct hci_rp_read_local_features)),
4088 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4089 sizeof(struct hci_rp_read_local_ext_features)),
4090 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4091 sizeof(struct hci_rp_read_buffer_size)),
4092 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4093 sizeof(struct hci_rp_read_bd_addr)),
4094 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4095 sizeof(struct hci_rp_read_local_pairing_opts)),
4096 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4097 sizeof(struct hci_rp_read_page_scan_activity)),
4098 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4099 hci_cc_write_page_scan_activity),
4100 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4101 sizeof(struct hci_rp_read_page_scan_type)),
4102 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4103 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4104 sizeof(struct hci_rp_read_data_block_size)),
4105 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4106 sizeof(struct hci_rp_read_flow_control_mode)),
4107 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4108 sizeof(struct hci_rp_read_local_amp_info)),
4109 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4110 sizeof(struct hci_rp_read_clock)),
4111 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4112 sizeof(struct hci_rp_read_enc_key_size)),
4113 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4114 sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4115 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4116 hci_cc_read_def_err_data_reporting,
4117 sizeof(struct hci_rp_read_def_err_data_reporting)),
4118 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4119 hci_cc_write_def_err_data_reporting),
4120 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4121 sizeof(struct hci_rp_pin_code_reply)),
4122 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4123 sizeof(struct hci_rp_pin_code_neg_reply)),
4124 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4125 sizeof(struct hci_rp_read_local_oob_data)),
4126 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4127 sizeof(struct hci_rp_read_local_oob_ext_data)),
4128 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4129 sizeof(struct hci_rp_le_read_buffer_size)),
4130 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4131 sizeof(struct hci_rp_le_read_local_features)),
4132 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4133 sizeof(struct hci_rp_le_read_adv_tx_power)),
4134 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4135 sizeof(struct hci_rp_user_confirm_reply)),
4136 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4137 sizeof(struct hci_rp_user_confirm_reply)),
4138 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4139 sizeof(struct hci_rp_user_confirm_reply)),
4140 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4141 sizeof(struct hci_rp_user_confirm_reply)),
4142 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4143 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4144 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4145 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4146 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4147 hci_cc_le_read_accept_list_size,
4148 sizeof(struct hci_rp_le_read_accept_list_size)),
4149 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4150 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4151 hci_cc_le_add_to_accept_list),
4152 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4153 hci_cc_le_del_from_accept_list),
4154 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4155 sizeof(struct hci_rp_le_read_supported_states)),
4156 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4157 sizeof(struct hci_rp_le_read_def_data_len)),
4158 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4159 hci_cc_le_write_def_data_len),
4160 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4161 hci_cc_le_add_to_resolv_list),
4162 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4163 hci_cc_le_del_from_resolv_list),
4164 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4165 hci_cc_le_clear_resolv_list),
4166 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4167 sizeof(struct hci_rp_le_read_resolv_list_size)),
4168 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4169 hci_cc_le_set_addr_resolution_enable),
4170 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4171 sizeof(struct hci_rp_le_read_max_data_len)),
4172 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4173 hci_cc_write_le_host_supported),
4174 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4175 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4176 sizeof(struct hci_rp_read_rssi)),
4177 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4178 sizeof(struct hci_rp_read_tx_power)),
4179 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4180 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4181 hci_cc_le_set_ext_scan_param),
4182 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4183 hci_cc_le_set_ext_scan_enable),
4184 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4185 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4186 hci_cc_le_read_num_adv_sets,
4187 sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4188 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4189 sizeof(struct hci_rp_le_set_ext_adv_params)),
4190 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4191 hci_cc_le_set_ext_adv_enable),
4192 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4193 hci_cc_le_set_adv_set_random_addr),
4194 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4195 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4196 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4197 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4198 hci_cc_le_set_per_adv_enable),
4199 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4200 sizeof(struct hci_rp_le_read_transmit_power)),
4201 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4202 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4203 sizeof(struct hci_rp_le_read_buffer_size_v2)),
4204 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4205 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4206 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4207 sizeof(struct hci_rp_le_setup_iso_path)),
4208 };
4209
hci_cc_func(struct hci_dev * hdev,const struct hci_cc * cc,struct sk_buff * skb)4210 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4211 struct sk_buff *skb)
4212 {
4213 void *data;
4214
4215 if (skb->len < cc->min_len) {
4216 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4217 cc->op, skb->len, cc->min_len);
4218 return HCI_ERROR_UNSPECIFIED;
4219 }
4220
4221 /* Just warn if the length is over max_len size it still be possible to
4222 * partially parse the cc so leave to callback to decide if that is
4223 * acceptable.
4224 */
4225 if (skb->len > cc->max_len)
4226 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4227 cc->op, skb->len, cc->max_len);
4228
4229 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4230 if (!data)
4231 return HCI_ERROR_UNSPECIFIED;
4232
4233 return cc->func(hdev, data, skb);
4234 }
4235
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)4236 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4237 struct sk_buff *skb, u16 *opcode, u8 *status,
4238 hci_req_complete_t *req_complete,
4239 hci_req_complete_skb_t *req_complete_skb)
4240 {
4241 struct hci_ev_cmd_complete *ev = data;
4242 int i;
4243
4244 *opcode = __le16_to_cpu(ev->opcode);
4245
4246 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4247
4248 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4249 if (hci_cc_table[i].op == *opcode) {
4250 *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4251 break;
4252 }
4253 }
4254
4255 if (i == ARRAY_SIZE(hci_cc_table)) {
4256 /* Unknown opcode, assume byte 0 contains the status, so
4257 * that e.g. __hci_cmd_sync() properly returns errors
4258 * for vendor specific commands send by HCI drivers.
4259 * If a vendor doesn't actually follow this convention we may
4260 * need to introduce a vendor CC table in order to properly set
4261 * the status.
4262 */
4263 *status = skb->data[0];
4264 }
4265
4266 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4267
4268 hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4269 req_complete_skb);
4270
4271 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4272 bt_dev_err(hdev,
4273 "unexpected event for opcode 0x%4.4x", *opcode);
4274 return;
4275 }
4276
4277 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4278 queue_work(hdev->workqueue, &hdev->cmd_work);
4279 }
4280
hci_cs_le_create_cis(struct hci_dev * hdev,u8 status)4281 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4282 {
4283 struct hci_cp_le_create_cis *cp;
4284 bool pending = false;
4285 int i;
4286
4287 bt_dev_dbg(hdev, "status 0x%2.2x", status);
4288
4289 if (!status)
4290 return;
4291
4292 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4293 if (!cp)
4294 return;
4295
4296 hci_dev_lock(hdev);
4297
4298 /* Remove connection if command failed */
4299 for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4300 struct hci_conn *conn;
4301 u16 handle;
4302
4303 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4304
4305 conn = hci_conn_hash_lookup_handle(hdev, handle);
4306 if (conn) {
4307 if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4308 &conn->flags))
4309 pending = true;
4310 conn->state = BT_CLOSED;
4311 hci_connect_cfm(conn, status);
4312 hci_conn_del(conn);
4313 }
4314 }
4315
4316 if (pending)
4317 hci_le_create_cis_pending(hdev);
4318
4319 hci_dev_unlock(hdev);
4320 }
4321
4322 #define HCI_CS(_op, _func) \
4323 { \
4324 .op = _op, \
4325 .func = _func, \
4326 }
4327
4328 static const struct hci_cs {
4329 u16 op;
4330 void (*func)(struct hci_dev *hdev, __u8 status);
4331 } hci_cs_table[] = {
4332 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4333 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4334 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4335 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4336 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4337 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4338 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4339 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4340 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4341 hci_cs_read_remote_ext_features),
4342 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4343 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4344 hci_cs_enhanced_setup_sync_conn),
4345 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4346 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4347 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4348 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4349 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4350 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4351 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4352 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4353 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4354 };
4355
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)4356 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4357 struct sk_buff *skb, u16 *opcode, u8 *status,
4358 hci_req_complete_t *req_complete,
4359 hci_req_complete_skb_t *req_complete_skb)
4360 {
4361 struct hci_ev_cmd_status *ev = data;
4362 int i;
4363
4364 *opcode = __le16_to_cpu(ev->opcode);
4365 *status = ev->status;
4366
4367 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4368
4369 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4370 if (hci_cs_table[i].op == *opcode) {
4371 hci_cs_table[i].func(hdev, ev->status);
4372 break;
4373 }
4374 }
4375
4376 handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4377
4378 /* Indicate request completion if the command failed. Also, if
4379 * we're not waiting for a special event and we get a success
4380 * command status we should try to flag the request as completed
4381 * (since for this kind of commands there will not be a command
4382 * complete event).
4383 */
4384 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) {
4385 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4386 req_complete_skb);
4387 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4388 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4389 *opcode);
4390 return;
4391 }
4392 }
4393
4394 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4395 queue_work(hdev->workqueue, &hdev->cmd_work);
4396 }
4397
hci_hardware_error_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4398 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4399 struct sk_buff *skb)
4400 {
4401 struct hci_ev_hardware_error *ev = data;
4402
4403 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4404
4405 hdev->hw_error_code = ev->code;
4406
4407 queue_work(hdev->req_workqueue, &hdev->error_reset);
4408 }
4409
hci_role_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4410 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4411 struct sk_buff *skb)
4412 {
4413 struct hci_ev_role_change *ev = data;
4414 struct hci_conn *conn;
4415
4416 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4417
4418 hci_dev_lock(hdev);
4419
4420 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4421 if (conn) {
4422 if (!ev->status)
4423 conn->role = ev->role;
4424
4425 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4426
4427 hci_role_switch_cfm(conn, ev->status, ev->role);
4428 }
4429
4430 hci_dev_unlock(hdev);
4431 }
4432
hci_num_comp_pkts_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4433 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4434 struct sk_buff *skb)
4435 {
4436 struct hci_ev_num_comp_pkts *ev = data;
4437 int i;
4438
4439 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4440 flex_array_size(ev, handles, ev->num)))
4441 return;
4442
4443 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4444 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4445 return;
4446 }
4447
4448 bt_dev_dbg(hdev, "num %d", ev->num);
4449
4450 for (i = 0; i < ev->num; i++) {
4451 struct hci_comp_pkts_info *info = &ev->handles[i];
4452 struct hci_conn *conn;
4453 __u16 handle, count;
4454
4455 handle = __le16_to_cpu(info->handle);
4456 count = __le16_to_cpu(info->count);
4457
4458 conn = hci_conn_hash_lookup_handle(hdev, handle);
4459 if (!conn)
4460 continue;
4461
4462 conn->sent -= count;
4463
4464 switch (conn->type) {
4465 case ACL_LINK:
4466 hdev->acl_cnt += count;
4467 if (hdev->acl_cnt > hdev->acl_pkts)
4468 hdev->acl_cnt = hdev->acl_pkts;
4469 break;
4470
4471 case LE_LINK:
4472 if (hdev->le_pkts) {
4473 hdev->le_cnt += count;
4474 if (hdev->le_cnt > hdev->le_pkts)
4475 hdev->le_cnt = hdev->le_pkts;
4476 } else {
4477 hdev->acl_cnt += count;
4478 if (hdev->acl_cnt > hdev->acl_pkts)
4479 hdev->acl_cnt = hdev->acl_pkts;
4480 }
4481 break;
4482
4483 case SCO_LINK:
4484 hdev->sco_cnt += count;
4485 if (hdev->sco_cnt > hdev->sco_pkts)
4486 hdev->sco_cnt = hdev->sco_pkts;
4487 break;
4488
4489 case ISO_LINK:
4490 if (hdev->iso_pkts) {
4491 hdev->iso_cnt += count;
4492 if (hdev->iso_cnt > hdev->iso_pkts)
4493 hdev->iso_cnt = hdev->iso_pkts;
4494 } else if (hdev->le_pkts) {
4495 hdev->le_cnt += count;
4496 if (hdev->le_cnt > hdev->le_pkts)
4497 hdev->le_cnt = hdev->le_pkts;
4498 } else {
4499 hdev->acl_cnt += count;
4500 if (hdev->acl_cnt > hdev->acl_pkts)
4501 hdev->acl_cnt = hdev->acl_pkts;
4502 }
4503 break;
4504
4505 default:
4506 bt_dev_err(hdev, "unknown type %d conn %p",
4507 conn->type, conn);
4508 break;
4509 }
4510 }
4511
4512 queue_work(hdev->workqueue, &hdev->tx_work);
4513 }
4514
__hci_conn_lookup_handle(struct hci_dev * hdev,__u16 handle)4515 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4516 __u16 handle)
4517 {
4518 struct hci_chan *chan;
4519
4520 switch (hdev->dev_type) {
4521 case HCI_PRIMARY:
4522 return hci_conn_hash_lookup_handle(hdev, handle);
4523 case HCI_AMP:
4524 chan = hci_chan_lookup_handle(hdev, handle);
4525 if (chan)
4526 return chan->conn;
4527 break;
4528 default:
4529 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4530 break;
4531 }
4532
4533 return NULL;
4534 }
4535
hci_num_comp_blocks_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4536 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4537 struct sk_buff *skb)
4538 {
4539 struct hci_ev_num_comp_blocks *ev = data;
4540 int i;
4541
4542 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4543 flex_array_size(ev, handles, ev->num_hndl)))
4544 return;
4545
4546 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4547 bt_dev_err(hdev, "wrong event for mode %d",
4548 hdev->flow_ctl_mode);
4549 return;
4550 }
4551
4552 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4553 ev->num_hndl);
4554
4555 for (i = 0; i < ev->num_hndl; i++) {
4556 struct hci_comp_blocks_info *info = &ev->handles[i];
4557 struct hci_conn *conn = NULL;
4558 __u16 handle, block_count;
4559
4560 handle = __le16_to_cpu(info->handle);
4561 block_count = __le16_to_cpu(info->blocks);
4562
4563 conn = __hci_conn_lookup_handle(hdev, handle);
4564 if (!conn)
4565 continue;
4566
4567 conn->sent -= block_count;
4568
4569 switch (conn->type) {
4570 case ACL_LINK:
4571 case AMP_LINK:
4572 hdev->block_cnt += block_count;
4573 if (hdev->block_cnt > hdev->num_blocks)
4574 hdev->block_cnt = hdev->num_blocks;
4575 break;
4576
4577 default:
4578 bt_dev_err(hdev, "unknown type %d conn %p",
4579 conn->type, conn);
4580 break;
4581 }
4582 }
4583
4584 queue_work(hdev->workqueue, &hdev->tx_work);
4585 }
4586
hci_mode_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4587 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4588 struct sk_buff *skb)
4589 {
4590 struct hci_ev_mode_change *ev = data;
4591 struct hci_conn *conn;
4592
4593 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4594
4595 hci_dev_lock(hdev);
4596
4597 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4598 if (conn) {
4599 conn->mode = ev->mode;
4600
4601 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4602 &conn->flags)) {
4603 if (conn->mode == HCI_CM_ACTIVE)
4604 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4605 else
4606 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4607 }
4608
4609 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4610 hci_sco_setup(conn, ev->status);
4611 }
4612
4613 hci_dev_unlock(hdev);
4614 }
4615
hci_pin_code_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4616 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4617 struct sk_buff *skb)
4618 {
4619 struct hci_ev_pin_code_req *ev = data;
4620 struct hci_conn *conn;
4621
4622 bt_dev_dbg(hdev, "");
4623
4624 hci_dev_lock(hdev);
4625
4626 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4627 if (!conn)
4628 goto unlock;
4629
4630 if (conn->state == BT_CONNECTED) {
4631 hci_conn_hold(conn);
4632 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4633 hci_conn_drop(conn);
4634 }
4635
4636 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4637 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4638 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4639 sizeof(ev->bdaddr), &ev->bdaddr);
4640 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4641 u8 secure;
4642
4643 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4644 secure = 1;
4645 else
4646 secure = 0;
4647
4648 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4649 }
4650
4651 unlock:
4652 hci_dev_unlock(hdev);
4653 }
4654
conn_set_key(struct hci_conn * conn,u8 key_type,u8 pin_len)4655 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4656 {
4657 if (key_type == HCI_LK_CHANGED_COMBINATION)
4658 return;
4659
4660 conn->pin_length = pin_len;
4661 conn->key_type = key_type;
4662
4663 switch (key_type) {
4664 case HCI_LK_LOCAL_UNIT:
4665 case HCI_LK_REMOTE_UNIT:
4666 case HCI_LK_DEBUG_COMBINATION:
4667 return;
4668 case HCI_LK_COMBINATION:
4669 if (pin_len == 16)
4670 conn->pending_sec_level = BT_SECURITY_HIGH;
4671 else
4672 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4673 break;
4674 case HCI_LK_UNAUTH_COMBINATION_P192:
4675 case HCI_LK_UNAUTH_COMBINATION_P256:
4676 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4677 break;
4678 case HCI_LK_AUTH_COMBINATION_P192:
4679 conn->pending_sec_level = BT_SECURITY_HIGH;
4680 break;
4681 case HCI_LK_AUTH_COMBINATION_P256:
4682 conn->pending_sec_level = BT_SECURITY_FIPS;
4683 break;
4684 }
4685 }
4686
hci_link_key_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4687 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4688 struct sk_buff *skb)
4689 {
4690 struct hci_ev_link_key_req *ev = data;
4691 struct hci_cp_link_key_reply cp;
4692 struct hci_conn *conn;
4693 struct link_key *key;
4694
4695 bt_dev_dbg(hdev, "");
4696
4697 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4698 return;
4699
4700 hci_dev_lock(hdev);
4701
4702 key = hci_find_link_key(hdev, &ev->bdaddr);
4703 if (!key) {
4704 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4705 goto not_found;
4706 }
4707
4708 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4709
4710 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4711 if (conn) {
4712 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4713
4714 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4715 key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4716 conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4717 bt_dev_dbg(hdev, "ignoring unauthenticated key");
4718 goto not_found;
4719 }
4720
4721 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4722 (conn->pending_sec_level == BT_SECURITY_HIGH ||
4723 conn->pending_sec_level == BT_SECURITY_FIPS)) {
4724 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4725 goto not_found;
4726 }
4727
4728 conn_set_key(conn, key->type, key->pin_len);
4729 }
4730
4731 bacpy(&cp.bdaddr, &ev->bdaddr);
4732 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4733
4734 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4735
4736 hci_dev_unlock(hdev);
4737
4738 return;
4739
4740 not_found:
4741 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4742 hci_dev_unlock(hdev);
4743 }
4744
hci_link_key_notify_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4745 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4746 struct sk_buff *skb)
4747 {
4748 struct hci_ev_link_key_notify *ev = data;
4749 struct hci_conn *conn;
4750 struct link_key *key;
4751 bool persistent;
4752 u8 pin_len = 0;
4753
4754 bt_dev_dbg(hdev, "");
4755
4756 hci_dev_lock(hdev);
4757
4758 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4759 if (!conn)
4760 goto unlock;
4761
4762 /* Ignore NULL link key against CVE-2020-26555 */
4763 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4764 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4765 &ev->bdaddr);
4766 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4767 hci_conn_drop(conn);
4768 goto unlock;
4769 }
4770
4771 hci_conn_hold(conn);
4772 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4773 hci_conn_drop(conn);
4774
4775 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4776 conn_set_key(conn, ev->key_type, conn->pin_length);
4777
4778 if (!hci_dev_test_flag(hdev, HCI_MGMT))
4779 goto unlock;
4780
4781 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4782 ev->key_type, pin_len, &persistent);
4783 if (!key)
4784 goto unlock;
4785
4786 /* Update connection information since adding the key will have
4787 * fixed up the type in the case of changed combination keys.
4788 */
4789 if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4790 conn_set_key(conn, key->type, key->pin_len);
4791
4792 mgmt_new_link_key(hdev, key, persistent);
4793
4794 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4795 * is set. If it's not set simply remove the key from the kernel
4796 * list (we've still notified user space about it but with
4797 * store_hint being 0).
4798 */
4799 if (key->type == HCI_LK_DEBUG_COMBINATION &&
4800 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4801 list_del_rcu(&key->list);
4802 kfree_rcu(key, rcu);
4803 goto unlock;
4804 }
4805
4806 if (persistent)
4807 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4808 else
4809 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4810
4811 unlock:
4812 hci_dev_unlock(hdev);
4813 }
4814
hci_clock_offset_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4815 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4816 struct sk_buff *skb)
4817 {
4818 struct hci_ev_clock_offset *ev = data;
4819 struct hci_conn *conn;
4820
4821 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4822
4823 hci_dev_lock(hdev);
4824
4825 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4826 if (conn && !ev->status) {
4827 struct inquiry_entry *ie;
4828
4829 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4830 if (ie) {
4831 ie->data.clock_offset = ev->clock_offset;
4832 ie->timestamp = jiffies;
4833 }
4834 }
4835
4836 hci_dev_unlock(hdev);
4837 }
4838
hci_pkt_type_change_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4839 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4840 struct sk_buff *skb)
4841 {
4842 struct hci_ev_pkt_type_change *ev = data;
4843 struct hci_conn *conn;
4844
4845 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4846
4847 hci_dev_lock(hdev);
4848
4849 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4850 if (conn && !ev->status)
4851 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4852
4853 hci_dev_unlock(hdev);
4854 }
4855
hci_pscan_rep_mode_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4856 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4857 struct sk_buff *skb)
4858 {
4859 struct hci_ev_pscan_rep_mode *ev = data;
4860 struct inquiry_entry *ie;
4861
4862 bt_dev_dbg(hdev, "");
4863
4864 hci_dev_lock(hdev);
4865
4866 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4867 if (ie) {
4868 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4869 ie->timestamp = jiffies;
4870 }
4871
4872 hci_dev_unlock(hdev);
4873 }
4874
hci_inquiry_result_with_rssi_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)4875 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4876 struct sk_buff *skb)
4877 {
4878 struct hci_ev_inquiry_result_rssi *ev = edata;
4879 struct inquiry_data data;
4880 int i;
4881
4882 bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4883
4884 if (!ev->num)
4885 return;
4886
4887 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4888 return;
4889
4890 hci_dev_lock(hdev);
4891
4892 if (skb->len == array_size(ev->num,
4893 sizeof(struct inquiry_info_rssi_pscan))) {
4894 struct inquiry_info_rssi_pscan *info;
4895
4896 for (i = 0; i < ev->num; i++) {
4897 u32 flags;
4898
4899 info = hci_ev_skb_pull(hdev, skb,
4900 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4901 sizeof(*info));
4902 if (!info) {
4903 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4904 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4905 goto unlock;
4906 }
4907
4908 bacpy(&data.bdaddr, &info->bdaddr);
4909 data.pscan_rep_mode = info->pscan_rep_mode;
4910 data.pscan_period_mode = info->pscan_period_mode;
4911 data.pscan_mode = info->pscan_mode;
4912 memcpy(data.dev_class, info->dev_class, 3);
4913 data.clock_offset = info->clock_offset;
4914 data.rssi = info->rssi;
4915 data.ssp_mode = 0x00;
4916
4917 flags = hci_inquiry_cache_update(hdev, &data, false);
4918
4919 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4920 info->dev_class, info->rssi,
4921 flags, NULL, 0, NULL, 0, 0);
4922 }
4923 } else if (skb->len == array_size(ev->num,
4924 sizeof(struct inquiry_info_rssi))) {
4925 struct inquiry_info_rssi *info;
4926
4927 for (i = 0; i < ev->num; i++) {
4928 u32 flags;
4929
4930 info = hci_ev_skb_pull(hdev, skb,
4931 HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4932 sizeof(*info));
4933 if (!info) {
4934 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4935 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4936 goto unlock;
4937 }
4938
4939 bacpy(&data.bdaddr, &info->bdaddr);
4940 data.pscan_rep_mode = info->pscan_rep_mode;
4941 data.pscan_period_mode = info->pscan_period_mode;
4942 data.pscan_mode = 0x00;
4943 memcpy(data.dev_class, info->dev_class, 3);
4944 data.clock_offset = info->clock_offset;
4945 data.rssi = info->rssi;
4946 data.ssp_mode = 0x00;
4947
4948 flags = hci_inquiry_cache_update(hdev, &data, false);
4949
4950 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4951 info->dev_class, info->rssi,
4952 flags, NULL, 0, NULL, 0, 0);
4953 }
4954 } else {
4955 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4956 HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4957 }
4958 unlock:
4959 hci_dev_unlock(hdev);
4960 }
4961
hci_remote_ext_features_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)4962 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4963 struct sk_buff *skb)
4964 {
4965 struct hci_ev_remote_ext_features *ev = data;
4966 struct hci_conn *conn;
4967
4968 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4969
4970 hci_dev_lock(hdev);
4971
4972 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4973 if (!conn)
4974 goto unlock;
4975
4976 if (ev->page < HCI_MAX_PAGES)
4977 memcpy(conn->features[ev->page], ev->features, 8);
4978
4979 if (!ev->status && ev->page == 0x01) {
4980 struct inquiry_entry *ie;
4981
4982 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4983 if (ie)
4984 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4985
4986 if (ev->features[0] & LMP_HOST_SSP) {
4987 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4988 } else {
4989 /* It is mandatory by the Bluetooth specification that
4990 * Extended Inquiry Results are only used when Secure
4991 * Simple Pairing is enabled, but some devices violate
4992 * this.
4993 *
4994 * To make these devices work, the internal SSP
4995 * enabled flag needs to be cleared if the remote host
4996 * features do not indicate SSP support */
4997 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4998 }
4999
5000 if (ev->features[0] & LMP_HOST_SC)
5001 set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5002 }
5003
5004 if (conn->state != BT_CONFIG)
5005 goto unlock;
5006
5007 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5008 struct hci_cp_remote_name_req cp;
5009 memset(&cp, 0, sizeof(cp));
5010 bacpy(&cp.bdaddr, &conn->dst);
5011 cp.pscan_rep_mode = 0x02;
5012 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5013 } else {
5014 mgmt_device_connected(hdev, conn, NULL, 0);
5015 }
5016
5017 if (!hci_outgoing_auth_needed(hdev, conn)) {
5018 conn->state = BT_CONNECTED;
5019 hci_connect_cfm(conn, ev->status);
5020 hci_conn_drop(conn);
5021 }
5022
5023 unlock:
5024 hci_dev_unlock(hdev);
5025 }
5026
hci_sync_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5027 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5028 struct sk_buff *skb)
5029 {
5030 struct hci_ev_sync_conn_complete *ev = data;
5031 struct hci_conn *conn;
5032 u8 status = ev->status;
5033
5034 switch (ev->link_type) {
5035 case SCO_LINK:
5036 case ESCO_LINK:
5037 break;
5038 default:
5039 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5040 * for HCI_Synchronous_Connection_Complete is limited to
5041 * either SCO or eSCO
5042 */
5043 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5044 return;
5045 }
5046
5047 bt_dev_dbg(hdev, "status 0x%2.2x", status);
5048
5049 hci_dev_lock(hdev);
5050
5051 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5052 if (!conn) {
5053 if (ev->link_type == ESCO_LINK)
5054 goto unlock;
5055
5056 /* When the link type in the event indicates SCO connection
5057 * and lookup of the connection object fails, then check
5058 * if an eSCO connection object exists.
5059 *
5060 * The core limits the synchronous connections to either
5061 * SCO or eSCO. The eSCO connection is preferred and tried
5062 * to be setup first and until successfully established,
5063 * the link type will be hinted as eSCO.
5064 */
5065 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5066 if (!conn)
5067 goto unlock;
5068 }
5069
5070 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5071 * Processing it more than once per connection can corrupt kernel memory.
5072 *
5073 * As the connection handle is set here for the first time, it indicates
5074 * whether the connection is already set up.
5075 */
5076 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5077 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5078 goto unlock;
5079 }
5080
5081 switch (status) {
5082 case 0x00:
5083 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5084 if (status) {
5085 conn->state = BT_CLOSED;
5086 break;
5087 }
5088
5089 conn->state = BT_CONNECTED;
5090 conn->type = ev->link_type;
5091
5092 hci_debugfs_create_conn(conn);
5093 hci_conn_add_sysfs(conn);
5094 break;
5095
5096 case 0x10: /* Connection Accept Timeout */
5097 case 0x0d: /* Connection Rejected due to Limited Resources */
5098 case 0x11: /* Unsupported Feature or Parameter Value */
5099 case 0x1c: /* SCO interval rejected */
5100 case 0x1a: /* Unsupported Remote Feature */
5101 case 0x1e: /* Invalid LMP Parameters */
5102 case 0x1f: /* Unspecified error */
5103 case 0x20: /* Unsupported LMP Parameter value */
5104 if (conn->out) {
5105 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5106 (hdev->esco_type & EDR_ESCO_MASK);
5107 if (hci_setup_sync(conn, conn->parent->handle))
5108 goto unlock;
5109 }
5110 fallthrough;
5111
5112 default:
5113 conn->state = BT_CLOSED;
5114 break;
5115 }
5116
5117 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5118 /* Notify only in case of SCO over HCI transport data path which
5119 * is zero and non-zero value shall be non-HCI transport data path
5120 */
5121 if (conn->codec.data_path == 0 && hdev->notify) {
5122 switch (ev->air_mode) {
5123 case 0x02:
5124 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5125 break;
5126 case 0x03:
5127 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5128 break;
5129 }
5130 }
5131
5132 hci_connect_cfm(conn, status);
5133 if (status)
5134 hci_conn_del(conn);
5135
5136 unlock:
5137 hci_dev_unlock(hdev);
5138 }
5139
eir_get_length(u8 * eir,size_t eir_len)5140 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5141 {
5142 size_t parsed = 0;
5143
5144 while (parsed < eir_len) {
5145 u8 field_len = eir[0];
5146
5147 if (field_len == 0)
5148 return parsed;
5149
5150 parsed += field_len + 1;
5151 eir += field_len + 1;
5152 }
5153
5154 return eir_len;
5155 }
5156
hci_extended_inquiry_result_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)5157 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5158 struct sk_buff *skb)
5159 {
5160 struct hci_ev_ext_inquiry_result *ev = edata;
5161 struct inquiry_data data;
5162 size_t eir_len;
5163 int i;
5164
5165 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5166 flex_array_size(ev, info, ev->num)))
5167 return;
5168
5169 bt_dev_dbg(hdev, "num %d", ev->num);
5170
5171 if (!ev->num)
5172 return;
5173
5174 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5175 return;
5176
5177 hci_dev_lock(hdev);
5178
5179 for (i = 0; i < ev->num; i++) {
5180 struct extended_inquiry_info *info = &ev->info[i];
5181 u32 flags;
5182 bool name_known;
5183
5184 bacpy(&data.bdaddr, &info->bdaddr);
5185 data.pscan_rep_mode = info->pscan_rep_mode;
5186 data.pscan_period_mode = info->pscan_period_mode;
5187 data.pscan_mode = 0x00;
5188 memcpy(data.dev_class, info->dev_class, 3);
5189 data.clock_offset = info->clock_offset;
5190 data.rssi = info->rssi;
5191 data.ssp_mode = 0x01;
5192
5193 if (hci_dev_test_flag(hdev, HCI_MGMT))
5194 name_known = eir_get_data(info->data,
5195 sizeof(info->data),
5196 EIR_NAME_COMPLETE, NULL);
5197 else
5198 name_known = true;
5199
5200 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5201
5202 eir_len = eir_get_length(info->data, sizeof(info->data));
5203
5204 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5205 info->dev_class, info->rssi,
5206 flags, info->data, eir_len, NULL, 0, 0);
5207 }
5208
5209 hci_dev_unlock(hdev);
5210 }
5211
hci_key_refresh_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5212 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5213 struct sk_buff *skb)
5214 {
5215 struct hci_ev_key_refresh_complete *ev = data;
5216 struct hci_conn *conn;
5217
5218 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5219 __le16_to_cpu(ev->handle));
5220
5221 hci_dev_lock(hdev);
5222
5223 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5224 if (!conn)
5225 goto unlock;
5226
5227 /* For BR/EDR the necessary steps are taken through the
5228 * auth_complete event.
5229 */
5230 if (conn->type != LE_LINK)
5231 goto unlock;
5232
5233 if (!ev->status)
5234 conn->sec_level = conn->pending_sec_level;
5235
5236 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5237
5238 if (ev->status && conn->state == BT_CONNECTED) {
5239 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5240 hci_conn_drop(conn);
5241 goto unlock;
5242 }
5243
5244 if (conn->state == BT_CONFIG) {
5245 if (!ev->status)
5246 conn->state = BT_CONNECTED;
5247
5248 hci_connect_cfm(conn, ev->status);
5249 hci_conn_drop(conn);
5250 } else {
5251 hci_auth_cfm(conn, ev->status);
5252
5253 hci_conn_hold(conn);
5254 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5255 hci_conn_drop(conn);
5256 }
5257
5258 unlock:
5259 hci_dev_unlock(hdev);
5260 }
5261
hci_get_auth_req(struct hci_conn * conn)5262 static u8 hci_get_auth_req(struct hci_conn *conn)
5263 {
5264 /* If remote requests no-bonding follow that lead */
5265 if (conn->remote_auth == HCI_AT_NO_BONDING ||
5266 conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5267 return conn->remote_auth | (conn->auth_type & 0x01);
5268
5269 /* If both remote and local have enough IO capabilities, require
5270 * MITM protection
5271 */
5272 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5273 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5274 return conn->remote_auth | 0x01;
5275
5276 /* No MITM protection possible so ignore remote requirement */
5277 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5278 }
5279
bredr_oob_data_present(struct hci_conn * conn)5280 static u8 bredr_oob_data_present(struct hci_conn *conn)
5281 {
5282 struct hci_dev *hdev = conn->hdev;
5283 struct oob_data *data;
5284
5285 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5286 if (!data)
5287 return 0x00;
5288
5289 if (bredr_sc_enabled(hdev)) {
5290 /* When Secure Connections is enabled, then just
5291 * return the present value stored with the OOB
5292 * data. The stored value contains the right present
5293 * information. However it can only be trusted when
5294 * not in Secure Connection Only mode.
5295 */
5296 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5297 return data->present;
5298
5299 /* When Secure Connections Only mode is enabled, then
5300 * the P-256 values are required. If they are not
5301 * available, then do not declare that OOB data is
5302 * present.
5303 */
5304 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5305 !crypto_memneq(data->hash256, ZERO_KEY, 16))
5306 return 0x00;
5307
5308 return 0x02;
5309 }
5310
5311 /* When Secure Connections is not enabled or actually
5312 * not supported by the hardware, then check that if
5313 * P-192 data values are present.
5314 */
5315 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5316 !crypto_memneq(data->hash192, ZERO_KEY, 16))
5317 return 0x00;
5318
5319 return 0x01;
5320 }
5321
hci_io_capa_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5322 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5323 struct sk_buff *skb)
5324 {
5325 struct hci_ev_io_capa_request *ev = data;
5326 struct hci_conn *conn;
5327
5328 bt_dev_dbg(hdev, "");
5329
5330 hci_dev_lock(hdev);
5331
5332 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5333 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5334 goto unlock;
5335
5336 /* Assume remote supports SSP since it has triggered this event */
5337 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5338
5339 hci_conn_hold(conn);
5340
5341 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5342 goto unlock;
5343
5344 /* Allow pairing if we're pairable, the initiators of the
5345 * pairing or if the remote is not requesting bonding.
5346 */
5347 if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5348 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5349 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5350 struct hci_cp_io_capability_reply cp;
5351
5352 bacpy(&cp.bdaddr, &ev->bdaddr);
5353 /* Change the IO capability from KeyboardDisplay
5354 * to DisplayYesNo as it is not supported by BT spec. */
5355 cp.capability = (conn->io_capability == 0x04) ?
5356 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5357
5358 /* If we are initiators, there is no remote information yet */
5359 if (conn->remote_auth == 0xff) {
5360 /* Request MITM protection if our IO caps allow it
5361 * except for the no-bonding case.
5362 */
5363 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5364 conn->auth_type != HCI_AT_NO_BONDING)
5365 conn->auth_type |= 0x01;
5366 } else {
5367 conn->auth_type = hci_get_auth_req(conn);
5368 }
5369
5370 /* If we're not bondable, force one of the non-bondable
5371 * authentication requirement values.
5372 */
5373 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5374 conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5375
5376 cp.authentication = conn->auth_type;
5377 cp.oob_data = bredr_oob_data_present(conn);
5378
5379 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5380 sizeof(cp), &cp);
5381 } else {
5382 struct hci_cp_io_capability_neg_reply cp;
5383
5384 bacpy(&cp.bdaddr, &ev->bdaddr);
5385 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5386
5387 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5388 sizeof(cp), &cp);
5389 }
5390
5391 unlock:
5392 hci_dev_unlock(hdev);
5393 }
5394
hci_io_capa_reply_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5395 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5396 struct sk_buff *skb)
5397 {
5398 struct hci_ev_io_capa_reply *ev = data;
5399 struct hci_conn *conn;
5400
5401 bt_dev_dbg(hdev, "");
5402
5403 hci_dev_lock(hdev);
5404
5405 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5406 if (!conn)
5407 goto unlock;
5408
5409 conn->remote_cap = ev->capability;
5410 conn->remote_auth = ev->authentication;
5411
5412 unlock:
5413 hci_dev_unlock(hdev);
5414 }
5415
hci_user_confirm_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5416 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5417 struct sk_buff *skb)
5418 {
5419 struct hci_ev_user_confirm_req *ev = data;
5420 int loc_mitm, rem_mitm, confirm_hint = 0;
5421 struct hci_conn *conn;
5422
5423 bt_dev_dbg(hdev, "");
5424
5425 hci_dev_lock(hdev);
5426
5427 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5428 goto unlock;
5429
5430 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5431 if (!conn)
5432 goto unlock;
5433
5434 loc_mitm = (conn->auth_type & 0x01);
5435 rem_mitm = (conn->remote_auth & 0x01);
5436
5437 /* If we require MITM but the remote device can't provide that
5438 * (it has NoInputNoOutput) then reject the confirmation
5439 * request. We check the security level here since it doesn't
5440 * necessarily match conn->auth_type.
5441 */
5442 if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5443 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5444 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5445 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5446 sizeof(ev->bdaddr), &ev->bdaddr);
5447 goto unlock;
5448 }
5449
5450 /* If no side requires MITM protection; auto-accept */
5451 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5452 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5453
5454 /* If we're not the initiators request authorization to
5455 * proceed from user space (mgmt_user_confirm with
5456 * confirm_hint set to 1). The exception is if neither
5457 * side had MITM or if the local IO capability is
5458 * NoInputNoOutput, in which case we do auto-accept
5459 */
5460 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5461 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5462 (loc_mitm || rem_mitm)) {
5463 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5464 confirm_hint = 1;
5465 goto confirm;
5466 }
5467
5468 /* If there already exists link key in local host, leave the
5469 * decision to user space since the remote device could be
5470 * legitimate or malicious.
5471 */
5472 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5473 bt_dev_dbg(hdev, "Local host already has link key");
5474 confirm_hint = 1;
5475 goto confirm;
5476 }
5477
5478 BT_DBG("Auto-accept of user confirmation with %ums delay",
5479 hdev->auto_accept_delay);
5480
5481 if (hdev->auto_accept_delay > 0) {
5482 int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5483 queue_delayed_work(conn->hdev->workqueue,
5484 &conn->auto_accept_work, delay);
5485 goto unlock;
5486 }
5487
5488 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5489 sizeof(ev->bdaddr), &ev->bdaddr);
5490 goto unlock;
5491 }
5492
5493 confirm:
5494 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5495 le32_to_cpu(ev->passkey), confirm_hint);
5496
5497 unlock:
5498 hci_dev_unlock(hdev);
5499 }
5500
hci_user_passkey_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5501 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5502 struct sk_buff *skb)
5503 {
5504 struct hci_ev_user_passkey_req *ev = data;
5505
5506 bt_dev_dbg(hdev, "");
5507
5508 if (hci_dev_test_flag(hdev, HCI_MGMT))
5509 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5510 }
5511
hci_user_passkey_notify_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5512 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5513 struct sk_buff *skb)
5514 {
5515 struct hci_ev_user_passkey_notify *ev = data;
5516 struct hci_conn *conn;
5517
5518 bt_dev_dbg(hdev, "");
5519
5520 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5521 if (!conn)
5522 return;
5523
5524 conn->passkey_notify = __le32_to_cpu(ev->passkey);
5525 conn->passkey_entered = 0;
5526
5527 if (hci_dev_test_flag(hdev, HCI_MGMT))
5528 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5529 conn->dst_type, conn->passkey_notify,
5530 conn->passkey_entered);
5531 }
5532
hci_keypress_notify_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5533 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5534 struct sk_buff *skb)
5535 {
5536 struct hci_ev_keypress_notify *ev = data;
5537 struct hci_conn *conn;
5538
5539 bt_dev_dbg(hdev, "");
5540
5541 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5542 if (!conn)
5543 return;
5544
5545 switch (ev->type) {
5546 case HCI_KEYPRESS_STARTED:
5547 conn->passkey_entered = 0;
5548 return;
5549
5550 case HCI_KEYPRESS_ENTERED:
5551 conn->passkey_entered++;
5552 break;
5553
5554 case HCI_KEYPRESS_ERASED:
5555 conn->passkey_entered--;
5556 break;
5557
5558 case HCI_KEYPRESS_CLEARED:
5559 conn->passkey_entered = 0;
5560 break;
5561
5562 case HCI_KEYPRESS_COMPLETED:
5563 return;
5564 }
5565
5566 if (hci_dev_test_flag(hdev, HCI_MGMT))
5567 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5568 conn->dst_type, conn->passkey_notify,
5569 conn->passkey_entered);
5570 }
5571
hci_simple_pair_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5572 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5573 struct sk_buff *skb)
5574 {
5575 struct hci_ev_simple_pair_complete *ev = data;
5576 struct hci_conn *conn;
5577
5578 bt_dev_dbg(hdev, "");
5579
5580 hci_dev_lock(hdev);
5581
5582 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5583 if (!conn || !hci_conn_ssp_enabled(conn))
5584 goto unlock;
5585
5586 /* Reset the authentication requirement to unknown */
5587 conn->remote_auth = 0xff;
5588
5589 /* To avoid duplicate auth_failed events to user space we check
5590 * the HCI_CONN_AUTH_PEND flag which will be set if we
5591 * initiated the authentication. A traditional auth_complete
5592 * event gets always produced as initiator and is also mapped to
5593 * the mgmt_auth_failed event */
5594 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5595 mgmt_auth_failed(conn, ev->status);
5596
5597 hci_conn_drop(conn);
5598
5599 unlock:
5600 hci_dev_unlock(hdev);
5601 }
5602
hci_remote_host_features_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5603 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5604 struct sk_buff *skb)
5605 {
5606 struct hci_ev_remote_host_features *ev = data;
5607 struct inquiry_entry *ie;
5608 struct hci_conn *conn;
5609
5610 bt_dev_dbg(hdev, "");
5611
5612 hci_dev_lock(hdev);
5613
5614 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5615 if (conn)
5616 memcpy(conn->features[1], ev->features, 8);
5617
5618 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5619 if (ie)
5620 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5621
5622 hci_dev_unlock(hdev);
5623 }
5624
hci_remote_oob_data_request_evt(struct hci_dev * hdev,void * edata,struct sk_buff * skb)5625 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5626 struct sk_buff *skb)
5627 {
5628 struct hci_ev_remote_oob_data_request *ev = edata;
5629 struct oob_data *data;
5630
5631 bt_dev_dbg(hdev, "");
5632
5633 hci_dev_lock(hdev);
5634
5635 if (!hci_dev_test_flag(hdev, HCI_MGMT))
5636 goto unlock;
5637
5638 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5639 if (!data) {
5640 struct hci_cp_remote_oob_data_neg_reply cp;
5641
5642 bacpy(&cp.bdaddr, &ev->bdaddr);
5643 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5644 sizeof(cp), &cp);
5645 goto unlock;
5646 }
5647
5648 if (bredr_sc_enabled(hdev)) {
5649 struct hci_cp_remote_oob_ext_data_reply cp;
5650
5651 bacpy(&cp.bdaddr, &ev->bdaddr);
5652 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5653 memset(cp.hash192, 0, sizeof(cp.hash192));
5654 memset(cp.rand192, 0, sizeof(cp.rand192));
5655 } else {
5656 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5657 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5658 }
5659 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5660 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5661
5662 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5663 sizeof(cp), &cp);
5664 } else {
5665 struct hci_cp_remote_oob_data_reply cp;
5666
5667 bacpy(&cp.bdaddr, &ev->bdaddr);
5668 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5669 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5670
5671 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5672 sizeof(cp), &cp);
5673 }
5674
5675 unlock:
5676 hci_dev_unlock(hdev);
5677 }
5678
5679 #if IS_ENABLED(CONFIG_BT_HS)
hci_chan_selected_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5680 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5681 struct sk_buff *skb)
5682 {
5683 struct hci_ev_channel_selected *ev = data;
5684 struct hci_conn *hcon;
5685
5686 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5687
5688 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5689 if (!hcon)
5690 return;
5691
5692 amp_read_loc_assoc_final_data(hdev, hcon);
5693 }
5694
hci_phy_link_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5695 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5696 struct sk_buff *skb)
5697 {
5698 struct hci_ev_phy_link_complete *ev = data;
5699 struct hci_conn *hcon, *bredr_hcon;
5700
5701 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5702 ev->status);
5703
5704 hci_dev_lock(hdev);
5705
5706 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5707 if (!hcon)
5708 goto unlock;
5709
5710 if (!hcon->amp_mgr)
5711 goto unlock;
5712
5713 if (ev->status) {
5714 hci_conn_del(hcon);
5715 goto unlock;
5716 }
5717
5718 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5719
5720 hcon->state = BT_CONNECTED;
5721 bacpy(&hcon->dst, &bredr_hcon->dst);
5722
5723 hci_conn_hold(hcon);
5724 hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5725 hci_conn_drop(hcon);
5726
5727 hci_debugfs_create_conn(hcon);
5728 hci_conn_add_sysfs(hcon);
5729
5730 amp_physical_cfm(bredr_hcon, hcon);
5731
5732 unlock:
5733 hci_dev_unlock(hdev);
5734 }
5735
hci_loglink_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5736 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5737 struct sk_buff *skb)
5738 {
5739 struct hci_ev_logical_link_complete *ev = data;
5740 struct hci_conn *hcon;
5741 struct hci_chan *hchan;
5742 struct amp_mgr *mgr;
5743
5744 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5745 le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5746
5747 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5748 if (!hcon)
5749 return;
5750
5751 /* Create AMP hchan */
5752 hchan = hci_chan_create(hcon);
5753 if (!hchan)
5754 return;
5755
5756 hchan->handle = le16_to_cpu(ev->handle);
5757 hchan->amp = true;
5758
5759 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5760
5761 mgr = hcon->amp_mgr;
5762 if (mgr && mgr->bredr_chan) {
5763 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5764
5765 l2cap_chan_lock(bredr_chan);
5766
5767 bredr_chan->conn->mtu = hdev->block_mtu;
5768 l2cap_logical_cfm(bredr_chan, hchan, 0);
5769 hci_conn_hold(hcon);
5770
5771 l2cap_chan_unlock(bredr_chan);
5772 }
5773 }
5774
hci_disconn_loglink_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5775 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5776 struct sk_buff *skb)
5777 {
5778 struct hci_ev_disconn_logical_link_complete *ev = data;
5779 struct hci_chan *hchan;
5780
5781 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5782 le16_to_cpu(ev->handle), ev->status);
5783
5784 if (ev->status)
5785 return;
5786
5787 hci_dev_lock(hdev);
5788
5789 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5790 if (!hchan || !hchan->amp)
5791 goto unlock;
5792
5793 amp_destroy_logical_link(hchan, ev->reason);
5794
5795 unlock:
5796 hci_dev_unlock(hdev);
5797 }
5798
hci_disconn_phylink_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)5799 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5800 struct sk_buff *skb)
5801 {
5802 struct hci_ev_disconn_phy_link_complete *ev = data;
5803 struct hci_conn *hcon;
5804
5805 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5806
5807 if (ev->status)
5808 return;
5809
5810 hci_dev_lock(hdev);
5811
5812 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5813 if (hcon && hcon->type == AMP_LINK) {
5814 hcon->state = BT_CLOSED;
5815 hci_disconn_cfm(hcon, ev->reason);
5816 hci_conn_del(hcon);
5817 }
5818
5819 hci_dev_unlock(hdev);
5820 }
5821 #endif
5822
le_conn_update_addr(struct hci_conn * conn,bdaddr_t * bdaddr,u8 bdaddr_type,bdaddr_t * local_rpa)5823 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5824 u8 bdaddr_type, bdaddr_t *local_rpa)
5825 {
5826 if (conn->out) {
5827 conn->dst_type = bdaddr_type;
5828 conn->resp_addr_type = bdaddr_type;
5829 bacpy(&conn->resp_addr, bdaddr);
5830
5831 /* Check if the controller has set a Local RPA then it must be
5832 * used instead or hdev->rpa.
5833 */
5834 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5835 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5836 bacpy(&conn->init_addr, local_rpa);
5837 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5838 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5839 bacpy(&conn->init_addr, &conn->hdev->rpa);
5840 } else {
5841 hci_copy_identity_address(conn->hdev, &conn->init_addr,
5842 &conn->init_addr_type);
5843 }
5844 } else {
5845 conn->resp_addr_type = conn->hdev->adv_addr_type;
5846 /* Check if the controller has set a Local RPA then it must be
5847 * used instead or hdev->rpa.
5848 */
5849 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5850 conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5851 bacpy(&conn->resp_addr, local_rpa);
5852 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5853 /* In case of ext adv, resp_addr will be updated in
5854 * Adv Terminated event.
5855 */
5856 if (!ext_adv_capable(conn->hdev))
5857 bacpy(&conn->resp_addr,
5858 &conn->hdev->random_addr);
5859 } else {
5860 bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5861 }
5862
5863 conn->init_addr_type = bdaddr_type;
5864 bacpy(&conn->init_addr, bdaddr);
5865
5866 /* For incoming connections, set the default minimum
5867 * and maximum connection interval. They will be used
5868 * to check if the parameters are in range and if not
5869 * trigger the connection update procedure.
5870 */
5871 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5872 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5873 }
5874 }
5875
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)5876 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5877 bdaddr_t *bdaddr, u8 bdaddr_type,
5878 bdaddr_t *local_rpa, u8 role, u16 handle,
5879 u16 interval, u16 latency,
5880 u16 supervision_timeout)
5881 {
5882 struct hci_conn_params *params;
5883 struct hci_conn *conn;
5884 struct smp_irk *irk;
5885 u8 addr_type;
5886
5887 hci_dev_lock(hdev);
5888
5889 /* All controllers implicitly stop advertising in the event of a
5890 * connection, so ensure that the state bit is cleared.
5891 */
5892 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5893
5894 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5895 if (!conn) {
5896 /* In case of error status and there is no connection pending
5897 * just unlock as there is nothing to cleanup.
5898 */
5899 if (status)
5900 goto unlock;
5901
5902 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
5903 if (!conn) {
5904 bt_dev_err(hdev, "no memory for new connection");
5905 goto unlock;
5906 }
5907
5908 conn->dst_type = bdaddr_type;
5909
5910 /* If we didn't have a hci_conn object previously
5911 * but we're in central role this must be something
5912 * initiated using an accept list. Since accept list based
5913 * connections are not "first class citizens" we don't
5914 * have full tracking of them. Therefore, we go ahead
5915 * with a "best effort" approach of determining the
5916 * initiator address based on the HCI_PRIVACY flag.
5917 */
5918 if (conn->out) {
5919 conn->resp_addr_type = bdaddr_type;
5920 bacpy(&conn->resp_addr, bdaddr);
5921 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5922 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5923 bacpy(&conn->init_addr, &hdev->rpa);
5924 } else {
5925 hci_copy_identity_address(hdev,
5926 &conn->init_addr,
5927 &conn->init_addr_type);
5928 }
5929 }
5930 } else {
5931 cancel_delayed_work(&conn->le_conn_timeout);
5932 }
5933
5934 /* The HCI_LE_Connection_Complete event is only sent once per connection.
5935 * Processing it more than once per connection can corrupt kernel memory.
5936 *
5937 * As the connection handle is set here for the first time, it indicates
5938 * whether the connection is already set up.
5939 */
5940 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5941 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5942 goto unlock;
5943 }
5944
5945 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5946
5947 /* Lookup the identity address from the stored connection
5948 * address and address type.
5949 *
5950 * When establishing connections to an identity address, the
5951 * connection procedure will store the resolvable random
5952 * address first. Now if it can be converted back into the
5953 * identity address, start using the identity address from
5954 * now on.
5955 */
5956 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5957 if (irk) {
5958 bacpy(&conn->dst, &irk->bdaddr);
5959 conn->dst_type = irk->addr_type;
5960 }
5961
5962 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5963
5964 /* All connection failure handling is taken care of by the
5965 * hci_conn_failed function which is triggered by the HCI
5966 * request completion callbacks used for connecting.
5967 */
5968 if (status || hci_conn_set_handle(conn, handle))
5969 goto unlock;
5970
5971 /* Drop the connection if it has been aborted */
5972 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5973 hci_conn_drop(conn);
5974 goto unlock;
5975 }
5976
5977 if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5978 addr_type = BDADDR_LE_PUBLIC;
5979 else
5980 addr_type = BDADDR_LE_RANDOM;
5981
5982 /* Drop the connection if the device is blocked */
5983 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5984 hci_conn_drop(conn);
5985 goto unlock;
5986 }
5987
5988 mgmt_device_connected(hdev, conn, NULL, 0);
5989
5990 conn->sec_level = BT_SECURITY_LOW;
5991 conn->state = BT_CONFIG;
5992
5993 /* Store current advertising instance as connection advertising instance
5994 * when sotfware rotation is in use so it can be re-enabled when
5995 * disconnected.
5996 */
5997 if (!ext_adv_capable(hdev))
5998 conn->adv_instance = hdev->cur_adv_instance;
5999
6000 conn->le_conn_interval = interval;
6001 conn->le_conn_latency = latency;
6002 conn->le_supv_timeout = supervision_timeout;
6003
6004 hci_debugfs_create_conn(conn);
6005 hci_conn_add_sysfs(conn);
6006
6007 /* The remote features procedure is defined for central
6008 * role only. So only in case of an initiated connection
6009 * request the remote features.
6010 *
6011 * If the local controller supports peripheral-initiated features
6012 * exchange, then requesting the remote features in peripheral
6013 * role is possible. Otherwise just transition into the
6014 * connected state without requesting the remote features.
6015 */
6016 if (conn->out ||
6017 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6018 struct hci_cp_le_read_remote_features cp;
6019
6020 cp.handle = __cpu_to_le16(conn->handle);
6021
6022 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6023 sizeof(cp), &cp);
6024
6025 hci_conn_hold(conn);
6026 } else {
6027 conn->state = BT_CONNECTED;
6028 hci_connect_cfm(conn, status);
6029 }
6030
6031 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6032 conn->dst_type);
6033 if (params) {
6034 hci_pend_le_list_del_init(params);
6035 if (params->conn) {
6036 hci_conn_drop(params->conn);
6037 hci_conn_put(params->conn);
6038 params->conn = NULL;
6039 }
6040 }
6041
6042 unlock:
6043 hci_update_passive_scan(hdev);
6044 hci_dev_unlock(hdev);
6045 }
6046
hci_le_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6047 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6048 struct sk_buff *skb)
6049 {
6050 struct hci_ev_le_conn_complete *ev = data;
6051
6052 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6053
6054 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6055 NULL, ev->role, le16_to_cpu(ev->handle),
6056 le16_to_cpu(ev->interval),
6057 le16_to_cpu(ev->latency),
6058 le16_to_cpu(ev->supervision_timeout));
6059 }
6060
hci_le_enh_conn_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6061 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6062 struct sk_buff *skb)
6063 {
6064 struct hci_ev_le_enh_conn_complete *ev = data;
6065
6066 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6067
6068 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6069 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6070 le16_to_cpu(ev->interval),
6071 le16_to_cpu(ev->latency),
6072 le16_to_cpu(ev->supervision_timeout));
6073 }
6074
hci_le_ext_adv_term_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6075 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6076 struct sk_buff *skb)
6077 {
6078 struct hci_evt_le_ext_adv_set_term *ev = data;
6079 struct hci_conn *conn;
6080 struct adv_info *adv, *n;
6081
6082 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6083
6084 /* The Bluetooth Core 5.3 specification clearly states that this event
6085 * shall not be sent when the Host disables the advertising set. So in
6086 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6087 *
6088 * When the Host disables an advertising set, all cleanup is done via
6089 * its command callback and not needed to be duplicated here.
6090 */
6091 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6092 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6093 return;
6094 }
6095
6096 hci_dev_lock(hdev);
6097
6098 adv = hci_find_adv_instance(hdev, ev->handle);
6099
6100 if (ev->status) {
6101 if (!adv)
6102 goto unlock;
6103
6104 /* Remove advertising as it has been terminated */
6105 hci_remove_adv_instance(hdev, ev->handle);
6106 mgmt_advertising_removed(NULL, hdev, ev->handle);
6107
6108 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6109 if (adv->enabled)
6110 goto unlock;
6111 }
6112
6113 /* We are no longer advertising, clear HCI_LE_ADV */
6114 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6115 goto unlock;
6116 }
6117
6118 if (adv)
6119 adv->enabled = false;
6120
6121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6122 if (conn) {
6123 /* Store handle in the connection so the correct advertising
6124 * instance can be re-enabled when disconnected.
6125 */
6126 conn->adv_instance = ev->handle;
6127
6128 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6129 bacmp(&conn->resp_addr, BDADDR_ANY))
6130 goto unlock;
6131
6132 if (!ev->handle) {
6133 bacpy(&conn->resp_addr, &hdev->random_addr);
6134 goto unlock;
6135 }
6136
6137 if (adv)
6138 bacpy(&conn->resp_addr, &adv->random_addr);
6139 }
6140
6141 unlock:
6142 hci_dev_unlock(hdev);
6143 }
6144
hci_le_conn_update_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6145 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6146 struct sk_buff *skb)
6147 {
6148 struct hci_ev_le_conn_update_complete *ev = data;
6149 struct hci_conn *conn;
6150
6151 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6152
6153 if (ev->status)
6154 return;
6155
6156 hci_dev_lock(hdev);
6157
6158 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6159 if (conn) {
6160 conn->le_conn_interval = le16_to_cpu(ev->interval);
6161 conn->le_conn_latency = le16_to_cpu(ev->latency);
6162 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6163 }
6164
6165 hci_dev_unlock(hdev);
6166 }
6167
6168 /* 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)6169 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6170 bdaddr_t *addr,
6171 u8 addr_type, bool addr_resolved,
6172 u8 adv_type)
6173 {
6174 struct hci_conn *conn;
6175 struct hci_conn_params *params;
6176
6177 /* If the event is not connectable don't proceed further */
6178 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6179 return NULL;
6180
6181 /* Ignore if the device is blocked or hdev is suspended */
6182 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6183 hdev->suspended)
6184 return NULL;
6185
6186 /* Most controller will fail if we try to create new connections
6187 * while we have an existing one in peripheral role.
6188 */
6189 if (hdev->conn_hash.le_num_peripheral > 0 &&
6190 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6191 !(hdev->le_states[3] & 0x10)))
6192 return NULL;
6193
6194 /* If we're not connectable only connect devices that we have in
6195 * our pend_le_conns list.
6196 */
6197 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6198 addr_type);
6199 if (!params)
6200 return NULL;
6201
6202 if (!params->explicit_connect) {
6203 switch (params->auto_connect) {
6204 case HCI_AUTO_CONN_DIRECT:
6205 /* Only devices advertising with ADV_DIRECT_IND are
6206 * triggering a connection attempt. This is allowing
6207 * incoming connections from peripheral devices.
6208 */
6209 if (adv_type != LE_ADV_DIRECT_IND)
6210 return NULL;
6211 break;
6212 case HCI_AUTO_CONN_ALWAYS:
6213 /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6214 * are triggering a connection attempt. This means
6215 * that incoming connections from peripheral device are
6216 * accepted and also outgoing connections to peripheral
6217 * devices are established when found.
6218 */
6219 break;
6220 default:
6221 return NULL;
6222 }
6223 }
6224
6225 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6226 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6227 HCI_ROLE_MASTER);
6228 if (!IS_ERR(conn)) {
6229 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6230 * by higher layer that tried to connect, if no then
6231 * store the pointer since we don't really have any
6232 * other owner of the object besides the params that
6233 * triggered it. This way we can abort the connection if
6234 * the parameters get removed and keep the reference
6235 * count consistent once the connection is established.
6236 */
6237
6238 if (!params->explicit_connect)
6239 params->conn = hci_conn_get(conn);
6240
6241 return conn;
6242 }
6243
6244 switch (PTR_ERR(conn)) {
6245 case -EBUSY:
6246 /* If hci_connect() returns -EBUSY it means there is already
6247 * an LE connection attempt going on. Since controllers don't
6248 * support more than one connection attempt at the time, we
6249 * don't consider this an error case.
6250 */
6251 break;
6252 default:
6253 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6254 return NULL;
6255 }
6256
6257 return NULL;
6258 }
6259
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)6260 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6261 u8 bdaddr_type, bdaddr_t *direct_addr,
6262 u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6263 bool ext_adv, bool ctl_time, u64 instant)
6264 {
6265 struct discovery_state *d = &hdev->discovery;
6266 struct smp_irk *irk;
6267 struct hci_conn *conn;
6268 bool match, bdaddr_resolved;
6269 u32 flags;
6270 u8 *ptr;
6271
6272 switch (type) {
6273 case LE_ADV_IND:
6274 case LE_ADV_DIRECT_IND:
6275 case LE_ADV_SCAN_IND:
6276 case LE_ADV_NONCONN_IND:
6277 case LE_ADV_SCAN_RSP:
6278 break;
6279 default:
6280 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6281 "type: 0x%02x", type);
6282 return;
6283 }
6284
6285 if (len > max_adv_len(hdev)) {
6286 bt_dev_err_ratelimited(hdev,
6287 "adv larger than maximum supported");
6288 return;
6289 }
6290
6291 /* Find the end of the data in case the report contains padded zero
6292 * bytes at the end causing an invalid length value.
6293 *
6294 * When data is NULL, len is 0 so there is no need for extra ptr
6295 * check as 'ptr < data + 0' is already false in such case.
6296 */
6297 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6298 if (ptr + 1 + *ptr > data + len)
6299 break;
6300 }
6301
6302 /* Adjust for actual length. This handles the case when remote
6303 * device is advertising with incorrect data length.
6304 */
6305 len = ptr - data;
6306
6307 /* If the direct address is present, then this report is from
6308 * a LE Direct Advertising Report event. In that case it is
6309 * important to see if the address is matching the local
6310 * controller address.
6311 */
6312 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6313 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6314 &bdaddr_resolved);
6315
6316 /* Only resolvable random addresses are valid for these
6317 * kind of reports and others can be ignored.
6318 */
6319 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6320 return;
6321
6322 /* If the controller is not using resolvable random
6323 * addresses, then this report can be ignored.
6324 */
6325 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6326 return;
6327
6328 /* If the local IRK of the controller does not match
6329 * with the resolvable random address provided, then
6330 * this report can be ignored.
6331 */
6332 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6333 return;
6334 }
6335
6336 /* Check if we need to convert to identity address */
6337 irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6338 if (irk) {
6339 bdaddr = &irk->bdaddr;
6340 bdaddr_type = irk->addr_type;
6341 }
6342
6343 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6344
6345 /* Check if we have been requested to connect to this device.
6346 *
6347 * direct_addr is set only for directed advertising reports (it is NULL
6348 * for advertising reports) and is already verified to be RPA above.
6349 */
6350 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6351 type);
6352 if (!ext_adv && conn && type == LE_ADV_IND &&
6353 len <= max_adv_len(hdev)) {
6354 /* Store report for later inclusion by
6355 * mgmt_device_connected
6356 */
6357 memcpy(conn->le_adv_data, data, len);
6358 conn->le_adv_data_len = len;
6359 }
6360
6361 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6362 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6363 else
6364 flags = 0;
6365
6366 /* All scan results should be sent up for Mesh systems */
6367 if (hci_dev_test_flag(hdev, HCI_MESH)) {
6368 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6369 rssi, flags, data, len, NULL, 0, instant);
6370 return;
6371 }
6372
6373 /* Passive scanning shouldn't trigger any device found events,
6374 * except for devices marked as CONN_REPORT for which we do send
6375 * device found events, or advertisement monitoring requested.
6376 */
6377 if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6378 if (type == LE_ADV_DIRECT_IND)
6379 return;
6380
6381 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6382 bdaddr, bdaddr_type) &&
6383 idr_is_empty(&hdev->adv_monitors_idr))
6384 return;
6385
6386 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6387 rssi, flags, data, len, NULL, 0, 0);
6388 return;
6389 }
6390
6391 /* When receiving a scan response, then there is no way to
6392 * know if the remote device is connectable or not. However
6393 * since scan responses are merged with a previously seen
6394 * advertising report, the flags field from that report
6395 * will be used.
6396 *
6397 * In the unlikely case that a controller just sends a scan
6398 * response event that doesn't match the pending report, then
6399 * it is marked as a standalone SCAN_RSP.
6400 */
6401 if (type == LE_ADV_SCAN_RSP)
6402 flags = MGMT_DEV_FOUND_SCAN_RSP;
6403
6404 /* If there's nothing pending either store the data from this
6405 * event or send an immediate device found event if the data
6406 * should not be stored for later.
6407 */
6408 if (!ext_adv && !has_pending_adv_report(hdev)) {
6409 /* If the report will trigger a SCAN_REQ store it for
6410 * later merging.
6411 */
6412 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6413 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6414 rssi, flags, data, len);
6415 return;
6416 }
6417
6418 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6419 rssi, flags, data, len, NULL, 0, 0);
6420 return;
6421 }
6422
6423 /* Check if the pending report is for the same device as the new one */
6424 match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6425 bdaddr_type == d->last_adv_addr_type);
6426
6427 /* If the pending data doesn't match this report or this isn't a
6428 * scan response (e.g. we got a duplicate ADV_IND) then force
6429 * sending of the pending data.
6430 */
6431 if (type != LE_ADV_SCAN_RSP || !match) {
6432 /* Send out whatever is in the cache, but skip duplicates */
6433 if (!match)
6434 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6435 d->last_adv_addr_type, NULL,
6436 d->last_adv_rssi, d->last_adv_flags,
6437 d->last_adv_data,
6438 d->last_adv_data_len, NULL, 0, 0);
6439
6440 /* If the new report will trigger a SCAN_REQ store it for
6441 * later merging.
6442 */
6443 if (!ext_adv && (type == LE_ADV_IND ||
6444 type == LE_ADV_SCAN_IND)) {
6445 store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6446 rssi, flags, data, len);
6447 return;
6448 }
6449
6450 /* The advertising reports cannot be merged, so clear
6451 * the pending report and send out a device found event.
6452 */
6453 clear_pending_adv_report(hdev);
6454 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6455 rssi, flags, data, len, NULL, 0, 0);
6456 return;
6457 }
6458
6459 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6460 * the new event is a SCAN_RSP. We can therefore proceed with
6461 * sending a merged device found event.
6462 */
6463 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6464 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6465 d->last_adv_data, d->last_adv_data_len, data, len, 0);
6466 clear_pending_adv_report(hdev);
6467 }
6468
hci_le_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6469 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6470 struct sk_buff *skb)
6471 {
6472 struct hci_ev_le_advertising_report *ev = data;
6473 u64 instant = jiffies;
6474
6475 if (!ev->num)
6476 return;
6477
6478 hci_dev_lock(hdev);
6479
6480 while (ev->num--) {
6481 struct hci_ev_le_advertising_info *info;
6482 s8 rssi;
6483
6484 info = hci_le_ev_skb_pull(hdev, skb,
6485 HCI_EV_LE_ADVERTISING_REPORT,
6486 sizeof(*info));
6487 if (!info)
6488 break;
6489
6490 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6491 info->length + 1))
6492 break;
6493
6494 if (info->length <= max_adv_len(hdev)) {
6495 rssi = info->data[info->length];
6496 process_adv_report(hdev, info->type, &info->bdaddr,
6497 info->bdaddr_type, NULL, 0, rssi,
6498 info->data, info->length, false,
6499 false, instant);
6500 } else {
6501 bt_dev_err(hdev, "Dropping invalid advertising data");
6502 }
6503 }
6504
6505 hci_dev_unlock(hdev);
6506 }
6507
ext_evt_type_to_legacy(struct hci_dev * hdev,u16 evt_type)6508 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6509 {
6510 if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6511 switch (evt_type) {
6512 case LE_LEGACY_ADV_IND:
6513 return LE_ADV_IND;
6514 case LE_LEGACY_ADV_DIRECT_IND:
6515 return LE_ADV_DIRECT_IND;
6516 case LE_LEGACY_ADV_SCAN_IND:
6517 return LE_ADV_SCAN_IND;
6518 case LE_LEGACY_NONCONN_IND:
6519 return LE_ADV_NONCONN_IND;
6520 case LE_LEGACY_SCAN_RSP_ADV:
6521 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6522 return LE_ADV_SCAN_RSP;
6523 }
6524
6525 goto invalid;
6526 }
6527
6528 if (evt_type & LE_EXT_ADV_CONN_IND) {
6529 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6530 return LE_ADV_DIRECT_IND;
6531
6532 return LE_ADV_IND;
6533 }
6534
6535 if (evt_type & LE_EXT_ADV_SCAN_RSP)
6536 return LE_ADV_SCAN_RSP;
6537
6538 if (evt_type & LE_EXT_ADV_SCAN_IND)
6539 return LE_ADV_SCAN_IND;
6540
6541 if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6542 evt_type & LE_EXT_ADV_DIRECT_IND)
6543 return LE_ADV_NONCONN_IND;
6544
6545 invalid:
6546 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6547 evt_type);
6548
6549 return LE_ADV_INVALID;
6550 }
6551
hci_le_ext_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6552 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6553 struct sk_buff *skb)
6554 {
6555 struct hci_ev_le_ext_adv_report *ev = data;
6556 u64 instant = jiffies;
6557
6558 if (!ev->num)
6559 return;
6560
6561 hci_dev_lock(hdev);
6562
6563 while (ev->num--) {
6564 struct hci_ev_le_ext_adv_info *info;
6565 u8 legacy_evt_type;
6566 u16 evt_type;
6567
6568 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6569 sizeof(*info));
6570 if (!info)
6571 break;
6572
6573 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6574 info->length))
6575 break;
6576
6577 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6578 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6579 if (legacy_evt_type != LE_ADV_INVALID) {
6580 process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6581 info->bdaddr_type, NULL, 0,
6582 info->rssi, info->data, info->length,
6583 !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6584 false, instant);
6585 }
6586 }
6587
6588 hci_dev_unlock(hdev);
6589 }
6590
hci_le_pa_term_sync(struct hci_dev * hdev,__le16 handle)6591 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6592 {
6593 struct hci_cp_le_pa_term_sync cp;
6594
6595 memset(&cp, 0, sizeof(cp));
6596 cp.handle = handle;
6597
6598 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6599 }
6600
hci_le_pa_sync_estabilished_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6601 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6602 struct sk_buff *skb)
6603 {
6604 struct hci_ev_le_pa_sync_established *ev = data;
6605 int mask = hdev->link_mode;
6606 __u8 flags = 0;
6607 struct hci_conn *pa_sync;
6608
6609 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6610
6611 hci_dev_lock(hdev);
6612
6613 hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6614
6615 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6616 if (!(mask & HCI_LM_ACCEPT)) {
6617 hci_le_pa_term_sync(hdev, ev->handle);
6618 goto unlock;
6619 }
6620
6621 if (!(flags & HCI_PROTO_DEFER))
6622 goto unlock;
6623
6624 if (ev->status) {
6625 /* Add connection to indicate the failed PA sync event */
6626 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6627 HCI_ROLE_SLAVE);
6628
6629 if (!pa_sync)
6630 goto unlock;
6631
6632 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6633
6634 /* Notify iso layer */
6635 hci_connect_cfm(pa_sync, ev->status);
6636 }
6637
6638 unlock:
6639 hci_dev_unlock(hdev);
6640 }
6641
hci_le_per_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6642 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6643 struct sk_buff *skb)
6644 {
6645 struct hci_ev_le_per_adv_report *ev = data;
6646 int mask = hdev->link_mode;
6647 __u8 flags = 0;
6648
6649 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6650
6651 hci_dev_lock(hdev);
6652
6653 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6654 if (!(mask & HCI_LM_ACCEPT))
6655 hci_le_pa_term_sync(hdev, ev->sync_handle);
6656
6657 hci_dev_unlock(hdev);
6658 }
6659
hci_le_remote_feat_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6660 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6661 struct sk_buff *skb)
6662 {
6663 struct hci_ev_le_remote_feat_complete *ev = data;
6664 struct hci_conn *conn;
6665
6666 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6667
6668 hci_dev_lock(hdev);
6669
6670 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6671 if (conn) {
6672 if (!ev->status)
6673 memcpy(conn->features[0], ev->features, 8);
6674
6675 if (conn->state == BT_CONFIG) {
6676 __u8 status;
6677
6678 /* If the local controller supports peripheral-initiated
6679 * features exchange, but the remote controller does
6680 * not, then it is possible that the error code 0x1a
6681 * for unsupported remote feature gets returned.
6682 *
6683 * In this specific case, allow the connection to
6684 * transition into connected state and mark it as
6685 * successful.
6686 */
6687 if (!conn->out && ev->status == 0x1a &&
6688 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6689 status = 0x00;
6690 else
6691 status = ev->status;
6692
6693 conn->state = BT_CONNECTED;
6694 hci_connect_cfm(conn, status);
6695 hci_conn_drop(conn);
6696 }
6697 }
6698
6699 hci_dev_unlock(hdev);
6700 }
6701
hci_le_ltk_request_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6702 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6703 struct sk_buff *skb)
6704 {
6705 struct hci_ev_le_ltk_req *ev = data;
6706 struct hci_cp_le_ltk_reply cp;
6707 struct hci_cp_le_ltk_neg_reply neg;
6708 struct hci_conn *conn;
6709 struct smp_ltk *ltk;
6710
6711 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6712
6713 hci_dev_lock(hdev);
6714
6715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6716 if (conn == NULL)
6717 goto not_found;
6718
6719 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6720 if (!ltk)
6721 goto not_found;
6722
6723 if (smp_ltk_is_sc(ltk)) {
6724 /* With SC both EDiv and Rand are set to zero */
6725 if (ev->ediv || ev->rand)
6726 goto not_found;
6727 } else {
6728 /* For non-SC keys check that EDiv and Rand match */
6729 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6730 goto not_found;
6731 }
6732
6733 memcpy(cp.ltk, ltk->val, ltk->enc_size);
6734 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6735 cp.handle = cpu_to_le16(conn->handle);
6736
6737 conn->pending_sec_level = smp_ltk_sec_level(ltk);
6738
6739 conn->enc_key_size = ltk->enc_size;
6740
6741 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6742
6743 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6744 * temporary key used to encrypt a connection following
6745 * pairing. It is used during the Encrypted Session Setup to
6746 * distribute the keys. Later, security can be re-established
6747 * using a distributed LTK.
6748 */
6749 if (ltk->type == SMP_STK) {
6750 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6751 list_del_rcu(<k->list);
6752 kfree_rcu(ltk, rcu);
6753 } else {
6754 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6755 }
6756
6757 hci_dev_unlock(hdev);
6758
6759 return;
6760
6761 not_found:
6762 neg.handle = ev->handle;
6763 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6764 hci_dev_unlock(hdev);
6765 }
6766
send_conn_param_neg_reply(struct hci_dev * hdev,u16 handle,u8 reason)6767 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6768 u8 reason)
6769 {
6770 struct hci_cp_le_conn_param_req_neg_reply cp;
6771
6772 cp.handle = cpu_to_le16(handle);
6773 cp.reason = reason;
6774
6775 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6776 &cp);
6777 }
6778
hci_le_remote_conn_param_req_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6779 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6780 struct sk_buff *skb)
6781 {
6782 struct hci_ev_le_remote_conn_param_req *ev = data;
6783 struct hci_cp_le_conn_param_req_reply cp;
6784 struct hci_conn *hcon;
6785 u16 handle, min, max, latency, timeout;
6786
6787 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6788
6789 handle = le16_to_cpu(ev->handle);
6790 min = le16_to_cpu(ev->interval_min);
6791 max = le16_to_cpu(ev->interval_max);
6792 latency = le16_to_cpu(ev->latency);
6793 timeout = le16_to_cpu(ev->timeout);
6794
6795 hcon = hci_conn_hash_lookup_handle(hdev, handle);
6796 if (!hcon || hcon->state != BT_CONNECTED)
6797 return send_conn_param_neg_reply(hdev, handle,
6798 HCI_ERROR_UNKNOWN_CONN_ID);
6799
6800 if (max > hcon->le_conn_max_interval)
6801 return send_conn_param_neg_reply(hdev, handle,
6802 HCI_ERROR_INVALID_LL_PARAMS);
6803
6804 if (hci_check_conn_params(min, max, latency, timeout))
6805 return send_conn_param_neg_reply(hdev, handle,
6806 HCI_ERROR_INVALID_LL_PARAMS);
6807
6808 if (hcon->role == HCI_ROLE_MASTER) {
6809 struct hci_conn_params *params;
6810 u8 store_hint;
6811
6812 hci_dev_lock(hdev);
6813
6814 params = hci_conn_params_lookup(hdev, &hcon->dst,
6815 hcon->dst_type);
6816 if (params) {
6817 params->conn_min_interval = min;
6818 params->conn_max_interval = max;
6819 params->conn_latency = latency;
6820 params->supervision_timeout = timeout;
6821 store_hint = 0x01;
6822 } else {
6823 store_hint = 0x00;
6824 }
6825
6826 hci_dev_unlock(hdev);
6827
6828 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6829 store_hint, min, max, latency, timeout);
6830 }
6831
6832 cp.handle = ev->handle;
6833 cp.interval_min = ev->interval_min;
6834 cp.interval_max = ev->interval_max;
6835 cp.latency = ev->latency;
6836 cp.timeout = ev->timeout;
6837 cp.min_ce_len = 0;
6838 cp.max_ce_len = 0;
6839
6840 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6841 }
6842
hci_le_direct_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6843 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6844 struct sk_buff *skb)
6845 {
6846 struct hci_ev_le_direct_adv_report *ev = data;
6847 u64 instant = jiffies;
6848 int i;
6849
6850 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6851 flex_array_size(ev, info, ev->num)))
6852 return;
6853
6854 if (!ev->num)
6855 return;
6856
6857 hci_dev_lock(hdev);
6858
6859 for (i = 0; i < ev->num; i++) {
6860 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6861
6862 process_adv_report(hdev, info->type, &info->bdaddr,
6863 info->bdaddr_type, &info->direct_addr,
6864 info->direct_addr_type, info->rssi, NULL, 0,
6865 false, false, instant);
6866 }
6867
6868 hci_dev_unlock(hdev);
6869 }
6870
hci_le_phy_update_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6871 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6872 struct sk_buff *skb)
6873 {
6874 struct hci_ev_le_phy_update_complete *ev = data;
6875 struct hci_conn *conn;
6876
6877 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6878
6879 if (ev->status)
6880 return;
6881
6882 hci_dev_lock(hdev);
6883
6884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6885 if (!conn)
6886 goto unlock;
6887
6888 conn->le_tx_phy = ev->tx_phy;
6889 conn->le_rx_phy = ev->rx_phy;
6890
6891 unlock:
6892 hci_dev_unlock(hdev);
6893 }
6894
hci_le_cis_estabilished_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6895 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6896 struct sk_buff *skb)
6897 {
6898 struct hci_evt_le_cis_established *ev = data;
6899 struct hci_conn *conn;
6900 struct bt_iso_qos *qos;
6901 bool pending = false;
6902 u16 handle = __le16_to_cpu(ev->handle);
6903
6904 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6905
6906 hci_dev_lock(hdev);
6907
6908 conn = hci_conn_hash_lookup_handle(hdev, handle);
6909 if (!conn) {
6910 bt_dev_err(hdev,
6911 "Unable to find connection with handle 0x%4.4x",
6912 handle);
6913 goto unlock;
6914 }
6915
6916 if (conn->type != ISO_LINK) {
6917 bt_dev_err(hdev,
6918 "Invalid connection link type handle 0x%4.4x",
6919 handle);
6920 goto unlock;
6921 }
6922
6923 qos = &conn->iso_qos;
6924
6925 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
6926
6927 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
6928 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
6929 qos->ucast.out.interval = qos->ucast.in.interval;
6930
6931 switch (conn->role) {
6932 case HCI_ROLE_SLAVE:
6933 /* Convert Transport Latency (us) to Latency (msec) */
6934 qos->ucast.in.latency =
6935 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6936 1000);
6937 qos->ucast.out.latency =
6938 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6939 1000);
6940 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6941 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6942 qos->ucast.in.phy = ev->c_phy;
6943 qos->ucast.out.phy = ev->p_phy;
6944 break;
6945 case HCI_ROLE_MASTER:
6946 /* Convert Transport Latency (us) to Latency (msec) */
6947 qos->ucast.out.latency =
6948 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6949 1000);
6950 qos->ucast.in.latency =
6951 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6952 1000);
6953 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6954 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6955 qos->ucast.out.phy = ev->c_phy;
6956 qos->ucast.in.phy = ev->p_phy;
6957 break;
6958 }
6959
6960 if (!ev->status) {
6961 conn->state = BT_CONNECTED;
6962 hci_debugfs_create_conn(conn);
6963 hci_conn_add_sysfs(conn);
6964 hci_iso_setup_path(conn);
6965 goto unlock;
6966 }
6967
6968 conn->state = BT_CLOSED;
6969 hci_connect_cfm(conn, ev->status);
6970 hci_conn_del(conn);
6971
6972 unlock:
6973 if (pending)
6974 hci_le_create_cis_pending(hdev);
6975
6976 hci_dev_unlock(hdev);
6977 }
6978
hci_le_reject_cis(struct hci_dev * hdev,__le16 handle)6979 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6980 {
6981 struct hci_cp_le_reject_cis cp;
6982
6983 memset(&cp, 0, sizeof(cp));
6984 cp.handle = handle;
6985 cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6986 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6987 }
6988
hci_le_accept_cis(struct hci_dev * hdev,__le16 handle)6989 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6990 {
6991 struct hci_cp_le_accept_cis cp;
6992
6993 memset(&cp, 0, sizeof(cp));
6994 cp.handle = handle;
6995 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6996 }
6997
hci_le_cis_req_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)6998 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6999 struct sk_buff *skb)
7000 {
7001 struct hci_evt_le_cis_req *ev = data;
7002 u16 acl_handle, cis_handle;
7003 struct hci_conn *acl, *cis;
7004 int mask;
7005 __u8 flags = 0;
7006
7007 acl_handle = __le16_to_cpu(ev->acl_handle);
7008 cis_handle = __le16_to_cpu(ev->cis_handle);
7009
7010 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7011 acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7012
7013 hci_dev_lock(hdev);
7014
7015 acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7016 if (!acl)
7017 goto unlock;
7018
7019 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7020 if (!(mask & HCI_LM_ACCEPT)) {
7021 hci_le_reject_cis(hdev, ev->cis_handle);
7022 goto unlock;
7023 }
7024
7025 cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7026 if (!cis) {
7027 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7028 cis_handle);
7029 if (!cis) {
7030 hci_le_reject_cis(hdev, ev->cis_handle);
7031 goto unlock;
7032 }
7033 }
7034
7035 cis->iso_qos.ucast.cig = ev->cig_id;
7036 cis->iso_qos.ucast.cis = ev->cis_id;
7037
7038 if (!(flags & HCI_PROTO_DEFER)) {
7039 hci_le_accept_cis(hdev, ev->cis_handle);
7040 } else {
7041 cis->state = BT_CONNECT2;
7042 hci_connect_cfm(cis, 0);
7043 }
7044
7045 unlock:
7046 hci_dev_unlock(hdev);
7047 }
7048
hci_iso_term_big_sync(struct hci_dev * hdev,void * data)7049 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7050 {
7051 u8 handle = PTR_UINT(data);
7052
7053 return hci_le_terminate_big_sync(hdev, handle,
7054 HCI_ERROR_LOCAL_HOST_TERM);
7055 }
7056
hci_le_create_big_complete_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)7057 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7058 struct sk_buff *skb)
7059 {
7060 struct hci_evt_le_create_big_complete *ev = data;
7061 struct hci_conn *conn;
7062 __u8 i = 0;
7063
7064 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7065
7066 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7067 flex_array_size(ev, bis_handle, ev->num_bis)))
7068 return;
7069
7070 hci_dev_lock(hdev);
7071 rcu_read_lock();
7072
7073 /* Connect all BISes that are bound to the BIG */
7074 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7075 if (bacmp(&conn->dst, BDADDR_ANY) ||
7076 conn->type != ISO_LINK ||
7077 conn->iso_qos.bcast.big != ev->handle)
7078 continue;
7079
7080 if (hci_conn_set_handle(conn,
7081 __le16_to_cpu(ev->bis_handle[i++])))
7082 continue;
7083
7084 if (!ev->status) {
7085 conn->state = BT_CONNECTED;
7086 set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7087 rcu_read_unlock();
7088 hci_debugfs_create_conn(conn);
7089 hci_conn_add_sysfs(conn);
7090 hci_iso_setup_path(conn);
7091 rcu_read_lock();
7092 continue;
7093 }
7094
7095 hci_connect_cfm(conn, ev->status);
7096 rcu_read_unlock();
7097 hci_conn_del(conn);
7098 rcu_read_lock();
7099 }
7100
7101 rcu_read_unlock();
7102
7103 if (!ev->status && !i)
7104 /* If no BISes have been connected for the BIG,
7105 * terminate. This is in case all bound connections
7106 * have been closed before the BIG creation
7107 * has completed.
7108 */
7109 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7110 UINT_PTR(ev->handle), NULL);
7111
7112 hci_dev_unlock(hdev);
7113 }
7114
hci_le_big_sync_established_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)7115 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7116 struct sk_buff *skb)
7117 {
7118 struct hci_evt_le_big_sync_estabilished *ev = data;
7119 struct hci_conn *bis;
7120 struct hci_conn *pa_sync;
7121 int i;
7122
7123 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7124
7125 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7126 flex_array_size(ev, bis, ev->num_bis)))
7127 return;
7128
7129 hci_dev_lock(hdev);
7130
7131 if (!ev->status) {
7132 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
7133 if (pa_sync)
7134 /* Also mark the BIG sync established event on the
7135 * associated PA sync hcon
7136 */
7137 set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
7138 }
7139
7140 for (i = 0; i < ev->num_bis; i++) {
7141 u16 handle = le16_to_cpu(ev->bis[i]);
7142 __le32 interval;
7143
7144 bis = hci_conn_hash_lookup_handle(hdev, handle);
7145 if (!bis) {
7146 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7147 HCI_ROLE_SLAVE, handle);
7148 if (!bis)
7149 continue;
7150 }
7151
7152 if (ev->status != 0x42)
7153 /* Mark PA sync as established */
7154 set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7155
7156 bis->iso_qos.bcast.big = ev->handle;
7157 memset(&interval, 0, sizeof(interval));
7158 memcpy(&interval, ev->latency, sizeof(ev->latency));
7159 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7160 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7161 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7162 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7163
7164 if (!ev->status) {
7165 set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7166 hci_iso_setup_path(bis);
7167 }
7168 }
7169
7170 /* In case BIG sync failed, notify each failed connection to
7171 * the user after all hci connections have been added
7172 */
7173 if (ev->status)
7174 for (i = 0; i < ev->num_bis; i++) {
7175 u16 handle = le16_to_cpu(ev->bis[i]);
7176
7177 bis = hci_conn_hash_lookup_handle(hdev, handle);
7178
7179 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7180 hci_connect_cfm(bis, ev->status);
7181 }
7182
7183 hci_dev_unlock(hdev);
7184 }
7185
hci_le_big_info_adv_report_evt(struct hci_dev * hdev,void * data,struct sk_buff * skb)7186 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7187 struct sk_buff *skb)
7188 {
7189 struct hci_evt_le_big_info_adv_report *ev = data;
7190 int mask = hdev->link_mode;
7191 __u8 flags = 0;
7192 struct hci_conn *pa_sync;
7193
7194 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7195
7196 hci_dev_lock(hdev);
7197
7198 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7199 if (!(mask & HCI_LM_ACCEPT)) {
7200 hci_le_pa_term_sync(hdev, ev->sync_handle);
7201 goto unlock;
7202 }
7203
7204 if (!(flags & HCI_PROTO_DEFER))
7205 goto unlock;
7206
7207 pa_sync = hci_conn_hash_lookup_pa_sync_handle
7208 (hdev,
7209 le16_to_cpu(ev->sync_handle));
7210
7211 if (pa_sync)
7212 goto unlock;
7213
7214 /* Add connection to indicate the PA sync event */
7215 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7216 HCI_ROLE_SLAVE);
7217
7218 if (!pa_sync)
7219 goto unlock;
7220
7221 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7222 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7223
7224 /* Notify iso layer */
7225 hci_connect_cfm(pa_sync, 0x00);
7226
7227 /* Notify MGMT layer */
7228 mgmt_device_connected(hdev, pa_sync, NULL, 0);
7229
7230 unlock:
7231 hci_dev_unlock(hdev);
7232 }
7233
7234 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7235 [_op] = { \
7236 .func = _func, \
7237 .min_len = _min_len, \
7238 .max_len = _max_len, \
7239 }
7240
7241 #define HCI_LE_EV(_op, _func, _len) \
7242 HCI_LE_EV_VL(_op, _func, _len, _len)
7243
7244 #define HCI_LE_EV_STATUS(_op, _func) \
7245 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7246
7247 /* Entries in this table shall have their position according to the subevent
7248 * opcode they handle so the use of the macros above is recommend since it does
7249 * attempt to initialize at its proper index using Designated Initializers that
7250 * way events without a callback function can be ommited.
7251 */
7252 static const struct hci_le_ev {
7253 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7254 u16 min_len;
7255 u16 max_len;
7256 } hci_le_ev_table[U8_MAX + 1] = {
7257 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7258 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7259 sizeof(struct hci_ev_le_conn_complete)),
7260 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7261 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7262 sizeof(struct hci_ev_le_advertising_report),
7263 HCI_MAX_EVENT_SIZE),
7264 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7265 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7266 hci_le_conn_update_complete_evt,
7267 sizeof(struct hci_ev_le_conn_update_complete)),
7268 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7269 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7270 hci_le_remote_feat_complete_evt,
7271 sizeof(struct hci_ev_le_remote_feat_complete)),
7272 /* [0x05 = HCI_EV_LE_LTK_REQ] */
7273 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7274 sizeof(struct hci_ev_le_ltk_req)),
7275 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7276 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7277 hci_le_remote_conn_param_req_evt,
7278 sizeof(struct hci_ev_le_remote_conn_param_req)),
7279 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7280 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7281 hci_le_enh_conn_complete_evt,
7282 sizeof(struct hci_ev_le_enh_conn_complete)),
7283 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7284 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7285 sizeof(struct hci_ev_le_direct_adv_report),
7286 HCI_MAX_EVENT_SIZE),
7287 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7288 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7289 sizeof(struct hci_ev_le_phy_update_complete)),
7290 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7291 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7292 sizeof(struct hci_ev_le_ext_adv_report),
7293 HCI_MAX_EVENT_SIZE),
7294 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7295 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7296 hci_le_pa_sync_estabilished_evt,
7297 sizeof(struct hci_ev_le_pa_sync_established)),
7298 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7299 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7300 hci_le_per_adv_report_evt,
7301 sizeof(struct hci_ev_le_per_adv_report),
7302 HCI_MAX_EVENT_SIZE),
7303 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7304 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7305 sizeof(struct hci_evt_le_ext_adv_set_term)),
7306 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7307 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7308 sizeof(struct hci_evt_le_cis_established)),
7309 /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7310 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7311 sizeof(struct hci_evt_le_cis_req)),
7312 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7313 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7314 hci_le_create_big_complete_evt,
7315 sizeof(struct hci_evt_le_create_big_complete),
7316 HCI_MAX_EVENT_SIZE),
7317 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7318 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7319 hci_le_big_sync_established_evt,
7320 sizeof(struct hci_evt_le_big_sync_estabilished),
7321 HCI_MAX_EVENT_SIZE),
7322 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7323 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7324 hci_le_big_info_adv_report_evt,
7325 sizeof(struct hci_evt_le_big_info_adv_report),
7326 HCI_MAX_EVENT_SIZE),
7327 };
7328
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)7329 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7330 struct sk_buff *skb, u16 *opcode, u8 *status,
7331 hci_req_complete_t *req_complete,
7332 hci_req_complete_skb_t *req_complete_skb)
7333 {
7334 struct hci_ev_le_meta *ev = data;
7335 const struct hci_le_ev *subev;
7336
7337 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7338
7339 /* Only match event if command OGF is for LE */
7340 if (hdev->req_skb &&
7341 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 &&
7342 hci_skb_event(hdev->req_skb) == ev->subevent) {
7343 *opcode = hci_skb_opcode(hdev->req_skb);
7344 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7345 req_complete_skb);
7346 }
7347
7348 subev = &hci_le_ev_table[ev->subevent];
7349 if (!subev->func)
7350 return;
7351
7352 if (skb->len < subev->min_len) {
7353 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7354 ev->subevent, skb->len, subev->min_len);
7355 return;
7356 }
7357
7358 /* Just warn if the length is over max_len size it still be
7359 * possible to partially parse the event so leave to callback to
7360 * decide if that is acceptable.
7361 */
7362 if (skb->len > subev->max_len)
7363 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7364 ev->subevent, skb->len, subev->max_len);
7365 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7366 if (!data)
7367 return;
7368
7369 subev->func(hdev, data, skb);
7370 }
7371
hci_get_cmd_complete(struct hci_dev * hdev,u16 opcode,u8 event,struct sk_buff * skb)7372 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7373 u8 event, struct sk_buff *skb)
7374 {
7375 struct hci_ev_cmd_complete *ev;
7376 struct hci_event_hdr *hdr;
7377
7378 if (!skb)
7379 return false;
7380
7381 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7382 if (!hdr)
7383 return false;
7384
7385 if (event) {
7386 if (hdr->evt != event)
7387 return false;
7388 return true;
7389 }
7390
7391 /* Check if request ended in Command Status - no way to retrieve
7392 * any extra parameters in this case.
7393 */
7394 if (hdr->evt == HCI_EV_CMD_STATUS)
7395 return false;
7396
7397 if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7398 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7399 hdr->evt);
7400 return false;
7401 }
7402
7403 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7404 if (!ev)
7405 return false;
7406
7407 if (opcode != __le16_to_cpu(ev->opcode)) {
7408 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7409 __le16_to_cpu(ev->opcode));
7410 return false;
7411 }
7412
7413 return true;
7414 }
7415
hci_store_wake_reason(struct hci_dev * hdev,u8 event,struct sk_buff * skb)7416 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7417 struct sk_buff *skb)
7418 {
7419 struct hci_ev_le_advertising_info *adv;
7420 struct hci_ev_le_direct_adv_info *direct_adv;
7421 struct hci_ev_le_ext_adv_info *ext_adv;
7422 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7423 const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7424
7425 hci_dev_lock(hdev);
7426
7427 /* If we are currently suspended and this is the first BT event seen,
7428 * save the wake reason associated with the event.
7429 */
7430 if (!hdev->suspended || hdev->wake_reason)
7431 goto unlock;
7432
7433 /* Default to remote wake. Values for wake_reason are documented in the
7434 * Bluez mgmt api docs.
7435 */
7436 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7437
7438 /* Once configured for remote wakeup, we should only wake up for
7439 * reconnections. It's useful to see which device is waking us up so
7440 * keep track of the bdaddr of the connection event that woke us up.
7441 */
7442 if (event == HCI_EV_CONN_REQUEST) {
7443 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7444 hdev->wake_addr_type = BDADDR_BREDR;
7445 } else if (event == HCI_EV_CONN_COMPLETE) {
7446 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7447 hdev->wake_addr_type = BDADDR_BREDR;
7448 } else if (event == HCI_EV_LE_META) {
7449 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7450 u8 subevent = le_ev->subevent;
7451 u8 *ptr = &skb->data[sizeof(*le_ev)];
7452 u8 num_reports = *ptr;
7453
7454 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7455 subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7456 subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7457 num_reports) {
7458 adv = (void *)(ptr + 1);
7459 direct_adv = (void *)(ptr + 1);
7460 ext_adv = (void *)(ptr + 1);
7461
7462 switch (subevent) {
7463 case HCI_EV_LE_ADVERTISING_REPORT:
7464 bacpy(&hdev->wake_addr, &adv->bdaddr);
7465 hdev->wake_addr_type = adv->bdaddr_type;
7466 break;
7467 case HCI_EV_LE_DIRECT_ADV_REPORT:
7468 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7469 hdev->wake_addr_type = direct_adv->bdaddr_type;
7470 break;
7471 case HCI_EV_LE_EXT_ADV_REPORT:
7472 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7473 hdev->wake_addr_type = ext_adv->bdaddr_type;
7474 break;
7475 }
7476 }
7477 } else {
7478 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7479 }
7480
7481 unlock:
7482 hci_dev_unlock(hdev);
7483 }
7484
7485 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7486 [_op] = { \
7487 .req = false, \
7488 .func = _func, \
7489 .min_len = _min_len, \
7490 .max_len = _max_len, \
7491 }
7492
7493 #define HCI_EV(_op, _func, _len) \
7494 HCI_EV_VL(_op, _func, _len, _len)
7495
7496 #define HCI_EV_STATUS(_op, _func) \
7497 HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7498
7499 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7500 [_op] = { \
7501 .req = true, \
7502 .func_req = _func, \
7503 .min_len = _min_len, \
7504 .max_len = _max_len, \
7505 }
7506
7507 #define HCI_EV_REQ(_op, _func, _len) \
7508 HCI_EV_REQ_VL(_op, _func, _len, _len)
7509
7510 /* Entries in this table shall have their position according to the event opcode
7511 * they handle so the use of the macros above is recommend since it does attempt
7512 * to initialize at its proper index using Designated Initializers that way
7513 * events without a callback function don't have entered.
7514 */
7515 static const struct hci_ev {
7516 bool req;
7517 union {
7518 void (*func)(struct hci_dev *hdev, void *data,
7519 struct sk_buff *skb);
7520 void (*func_req)(struct hci_dev *hdev, void *data,
7521 struct sk_buff *skb, u16 *opcode, u8 *status,
7522 hci_req_complete_t *req_complete,
7523 hci_req_complete_skb_t *req_complete_skb);
7524 };
7525 u16 min_len;
7526 u16 max_len;
7527 } hci_ev_table[U8_MAX + 1] = {
7528 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7529 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7530 /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7531 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7532 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7533 /* [0x03 = HCI_EV_CONN_COMPLETE] */
7534 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7535 sizeof(struct hci_ev_conn_complete)),
7536 /* [0x04 = HCI_EV_CONN_REQUEST] */
7537 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7538 sizeof(struct hci_ev_conn_request)),
7539 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7540 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7541 sizeof(struct hci_ev_disconn_complete)),
7542 /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7543 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7544 sizeof(struct hci_ev_auth_complete)),
7545 /* [0x07 = HCI_EV_REMOTE_NAME] */
7546 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7547 sizeof(struct hci_ev_remote_name)),
7548 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7549 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7550 sizeof(struct hci_ev_encrypt_change)),
7551 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7552 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7553 hci_change_link_key_complete_evt,
7554 sizeof(struct hci_ev_change_link_key_complete)),
7555 /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7556 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7557 sizeof(struct hci_ev_remote_features)),
7558 /* [0x0e = HCI_EV_CMD_COMPLETE] */
7559 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7560 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7561 /* [0x0f = HCI_EV_CMD_STATUS] */
7562 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7563 sizeof(struct hci_ev_cmd_status)),
7564 /* [0x10 = HCI_EV_CMD_STATUS] */
7565 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7566 sizeof(struct hci_ev_hardware_error)),
7567 /* [0x12 = HCI_EV_ROLE_CHANGE] */
7568 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7569 sizeof(struct hci_ev_role_change)),
7570 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7571 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7572 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7573 /* [0x14 = HCI_EV_MODE_CHANGE] */
7574 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7575 sizeof(struct hci_ev_mode_change)),
7576 /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7577 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7578 sizeof(struct hci_ev_pin_code_req)),
7579 /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7580 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7581 sizeof(struct hci_ev_link_key_req)),
7582 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7583 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7584 sizeof(struct hci_ev_link_key_notify)),
7585 /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7586 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7587 sizeof(struct hci_ev_clock_offset)),
7588 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7589 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7590 sizeof(struct hci_ev_pkt_type_change)),
7591 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7592 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7593 sizeof(struct hci_ev_pscan_rep_mode)),
7594 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7595 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7596 hci_inquiry_result_with_rssi_evt,
7597 sizeof(struct hci_ev_inquiry_result_rssi),
7598 HCI_MAX_EVENT_SIZE),
7599 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7600 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7601 sizeof(struct hci_ev_remote_ext_features)),
7602 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7603 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7604 sizeof(struct hci_ev_sync_conn_complete)),
7605 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7606 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7607 hci_extended_inquiry_result_evt,
7608 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7609 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7610 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7611 sizeof(struct hci_ev_key_refresh_complete)),
7612 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7613 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7614 sizeof(struct hci_ev_io_capa_request)),
7615 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7616 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7617 sizeof(struct hci_ev_io_capa_reply)),
7618 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7619 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7620 sizeof(struct hci_ev_user_confirm_req)),
7621 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7622 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7623 sizeof(struct hci_ev_user_passkey_req)),
7624 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7625 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7626 sizeof(struct hci_ev_remote_oob_data_request)),
7627 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7628 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7629 sizeof(struct hci_ev_simple_pair_complete)),
7630 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7631 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7632 sizeof(struct hci_ev_user_passkey_notify)),
7633 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7634 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7635 sizeof(struct hci_ev_keypress_notify)),
7636 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7637 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7638 sizeof(struct hci_ev_remote_host_features)),
7639 /* [0x3e = HCI_EV_LE_META] */
7640 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7641 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7642 #if IS_ENABLED(CONFIG_BT_HS)
7643 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7644 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7645 sizeof(struct hci_ev_phy_link_complete)),
7646 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7647 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7648 sizeof(struct hci_ev_channel_selected)),
7649 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7650 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7651 hci_disconn_loglink_complete_evt,
7652 sizeof(struct hci_ev_disconn_logical_link_complete)),
7653 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7654 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7655 sizeof(struct hci_ev_logical_link_complete)),
7656 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7657 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7658 hci_disconn_phylink_complete_evt,
7659 sizeof(struct hci_ev_disconn_phy_link_complete)),
7660 #endif
7661 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7662 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7663 sizeof(struct hci_ev_num_comp_blocks)),
7664 /* [0xff = HCI_EV_VENDOR] */
7665 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7666 };
7667
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)7668 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7669 u16 *opcode, u8 *status,
7670 hci_req_complete_t *req_complete,
7671 hci_req_complete_skb_t *req_complete_skb)
7672 {
7673 const struct hci_ev *ev = &hci_ev_table[event];
7674 void *data;
7675
7676 if (!ev->func)
7677 return;
7678
7679 if (skb->len < ev->min_len) {
7680 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7681 event, skb->len, ev->min_len);
7682 return;
7683 }
7684
7685 /* Just warn if the length is over max_len size it still be
7686 * possible to partially parse the event so leave to callback to
7687 * decide if that is acceptable.
7688 */
7689 if (skb->len > ev->max_len)
7690 bt_dev_warn_ratelimited(hdev,
7691 "unexpected event 0x%2.2x length: %u > %u",
7692 event, skb->len, ev->max_len);
7693
7694 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7695 if (!data)
7696 return;
7697
7698 if (ev->req)
7699 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7700 req_complete_skb);
7701 else
7702 ev->func(hdev, data, skb);
7703 }
7704
hci_event_packet(struct hci_dev * hdev,struct sk_buff * skb)7705 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7706 {
7707 struct hci_event_hdr *hdr = (void *) skb->data;
7708 hci_req_complete_t req_complete = NULL;
7709 hci_req_complete_skb_t req_complete_skb = NULL;
7710 struct sk_buff *orig_skb = NULL;
7711 u8 status = 0, event, req_evt = 0;
7712 u16 opcode = HCI_OP_NOP;
7713
7714 if (skb->len < sizeof(*hdr)) {
7715 bt_dev_err(hdev, "Malformed HCI Event");
7716 goto done;
7717 }
7718
7719 kfree_skb(hdev->recv_event);
7720 hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7721
7722 event = hdr->evt;
7723 if (!event) {
7724 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7725 event);
7726 goto done;
7727 }
7728
7729 /* Only match event if command OGF is not for LE */
7730 if (hdev->req_skb &&
7731 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 &&
7732 hci_skb_event(hdev->req_skb) == event) {
7733 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb),
7734 status, &req_complete, &req_complete_skb);
7735 req_evt = event;
7736 }
7737
7738 /* If it looks like we might end up having to call
7739 * req_complete_skb, store a pristine copy of the skb since the
7740 * various handlers may modify the original one through
7741 * skb_pull() calls, etc.
7742 */
7743 if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7744 event == HCI_EV_CMD_COMPLETE)
7745 orig_skb = skb_clone(skb, GFP_KERNEL);
7746
7747 skb_pull(skb, HCI_EVENT_HDR_SIZE);
7748
7749 /* Store wake reason if we're suspended */
7750 hci_store_wake_reason(hdev, event, skb);
7751
7752 bt_dev_dbg(hdev, "event 0x%2.2x", event);
7753
7754 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7755 &req_complete_skb);
7756
7757 if (req_complete) {
7758 req_complete(hdev, status, opcode);
7759 } else if (req_complete_skb) {
7760 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7761 kfree_skb(orig_skb);
7762 orig_skb = NULL;
7763 }
7764 req_complete_skb(hdev, status, opcode, orig_skb);
7765 }
7766
7767 done:
7768 kfree_skb(orig_skb);
7769 kfree_skb(skb);
7770 hdev->stat.evt_rx++;
7771 }
7772