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1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <linux/leds.h>
29#include <net/bluetooth/hci.h>
30#include <net/bluetooth/hci_sock.h>
31
32/* HCI priority */
33#define HCI_PRIO_MAX 7
34
35/* HCI Core structures */
36struct inquiry_data {
37 bdaddr_t bdaddr;
38 __u8 pscan_rep_mode;
39 __u8 pscan_period_mode;
40 __u8 pscan_mode;
41 __u8 dev_class[3];
42 __le16 clock_offset;
43 __s8 rssi;
44 __u8 ssp_mode;
45};
46
47struct inquiry_entry {
48 struct list_head all; /* inq_cache.all */
49 struct list_head list; /* unknown or resolve */
50 enum {
51 NAME_NOT_KNOWN,
52 NAME_NEEDED,
53 NAME_PENDING,
54 NAME_KNOWN,
55 } name_state;
56 __u32 timestamp;
57 struct inquiry_data data;
58};
59
60struct discovery_state {
61 int type;
62 enum {
63 DISCOVERY_STOPPED,
64 DISCOVERY_STARTING,
65 DISCOVERY_FINDING,
66 DISCOVERY_RESOLVING,
67 DISCOVERY_STOPPING,
68 } state;
69 struct list_head all; /* All devices found during inquiry */
70 struct list_head unknown; /* Name state not known */
71 struct list_head resolve; /* Name needs to be resolved */
72 __u32 timestamp;
73 bdaddr_t last_adv_addr;
74 u8 last_adv_addr_type;
75 s8 last_adv_rssi;
76 u32 last_adv_flags;
77 u8 last_adv_data[HCI_MAX_AD_LENGTH];
78 u8 last_adv_data_len;
79 bool report_invalid_rssi;
80 bool result_filtering;
81 bool limited;
82 s8 rssi;
83 u16 uuid_count;
84 u8 (*uuids)[16];
85 unsigned long scan_start;
86 unsigned long scan_duration;
87};
88
89struct hci_conn_hash {
90 struct list_head list;
91 unsigned int acl_num;
92 unsigned int amp_num;
93 unsigned int sco_num;
94 unsigned int le_num;
95 unsigned int le_num_slave;
96};
97
98struct bdaddr_list {
99 struct list_head list;
100 bdaddr_t bdaddr;
101 u8 bdaddr_type;
102};
103
104struct bt_uuid {
105 struct list_head list;
106 u8 uuid[16];
107 u8 size;
108 u8 svc_hint;
109};
110
111struct smp_csrk {
112 bdaddr_t bdaddr;
113 u8 bdaddr_type;
114 u8 type;
115 u8 val[16];
116};
117
118struct smp_ltk {
119 struct list_head list;
120 struct rcu_head rcu;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123 u8 authenticated;
124 u8 type;
125 u8 enc_size;
126 __le16 ediv;
127 __le64 rand;
128 u8 val[16];
129};
130
131struct smp_irk {
132 struct list_head list;
133 struct rcu_head rcu;
134 bdaddr_t rpa;
135 bdaddr_t bdaddr;
136 u8 addr_type;
137 u8 val[16];
138};
139
140struct link_key {
141 struct list_head list;
142 struct rcu_head rcu;
143 bdaddr_t bdaddr;
144 u8 type;
145 u8 val[HCI_LINK_KEY_SIZE];
146 u8 pin_len;
147};
148
149struct oob_data {
150 struct list_head list;
151 bdaddr_t bdaddr;
152 u8 bdaddr_type;
153 u8 present;
154 u8 hash192[16];
155 u8 rand192[16];
156 u8 hash256[16];
157 u8 rand256[16];
158};
159
160struct adv_info {
161 struct list_head list;
162 bool pending;
163 __u8 instance;
164 __u32 flags;
165 __u16 timeout;
166 __u16 remaining_time;
167 __u16 duration;
168 __u16 adv_data_len;
169 __u8 adv_data[HCI_MAX_AD_LENGTH];
170 __u16 scan_rsp_len;
171 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
172};
173
174#define HCI_MAX_ADV_INSTANCES 5
175#define HCI_DEFAULT_ADV_DURATION 2
176
177#define HCI_MAX_SHORT_NAME_LENGTH 10
178
179/* Default LE RPA expiry time, 15 minutes */
180#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
181
182/* Default min/max age of connection information (1s/3s) */
183#define DEFAULT_CONN_INFO_MIN_AGE 1000
184#define DEFAULT_CONN_INFO_MAX_AGE 3000
185
186struct amp_assoc {
187 __u16 len;
188 __u16 offset;
189 __u16 rem_len;
190 __u16 len_so_far;
191 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
192};
193
194#define HCI_MAX_PAGES 3
195
196struct hci_dev {
197 struct list_head list;
198 struct mutex lock;
199
200 char name[8];
201 unsigned long flags;
202 __u16 id;
203 __u8 bus;
204 __u8 dev_type;
205 bdaddr_t bdaddr;
206 bdaddr_t setup_addr;
207 bdaddr_t public_addr;
208 bdaddr_t random_addr;
209 bdaddr_t static_addr;
210 __u8 adv_addr_type;
211 __u8 dev_name[HCI_MAX_NAME_LENGTH];
212 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
213 __u8 eir[HCI_MAX_EIR_LENGTH];
214 __u8 dev_class[3];
215 __u8 major_class;
216 __u8 minor_class;
217 __u8 max_page;
218 __u8 features[HCI_MAX_PAGES][8];
219 __u8 le_features[8];
220 __u8 le_white_list_size;
221 __u8 le_states[8];
222 __u8 commands[64];
223 __u8 hci_ver;
224 __u16 hci_rev;
225 __u8 lmp_ver;
226 __u16 manufacturer;
227 __u16 lmp_subver;
228 __u16 voice_setting;
229 __u8 num_iac;
230 __u8 stored_max_keys;
231 __u8 stored_num_keys;
232 __u8 io_capability;
233 __s8 inq_tx_power;
234 __u16 page_scan_interval;
235 __u16 page_scan_window;
236 __u8 page_scan_type;
237 __u8 le_adv_channel_map;
238 __u16 le_adv_min_interval;
239 __u16 le_adv_max_interval;
240 __u8 le_scan_type;
241 __u16 le_scan_interval;
242 __u16 le_scan_window;
243 __u16 le_conn_min_interval;
244 __u16 le_conn_max_interval;
245 __u16 le_conn_latency;
246 __u16 le_supv_timeout;
247 __u16 le_def_tx_len;
248 __u16 le_def_tx_time;
249 __u16 le_max_tx_len;
250 __u16 le_max_tx_time;
251 __u16 le_max_rx_len;
252 __u16 le_max_rx_time;
253 __u16 discov_interleaved_timeout;
254 __u16 conn_info_min_age;
255 __u16 conn_info_max_age;
256 __u8 ssp_debug_mode;
257 __u8 hw_error_code;
258 __u32 clock;
259
260 __u16 devid_source;
261 __u16 devid_vendor;
262 __u16 devid_product;
263 __u16 devid_version;
264
265 __u16 pkt_type;
266 __u16 esco_type;
267 __u16 link_policy;
268 __u16 link_mode;
269
270 __u32 idle_timeout;
271 __u16 sniff_min_interval;
272 __u16 sniff_max_interval;
273
274 __u8 amp_status;
275 __u32 amp_total_bw;
276 __u32 amp_max_bw;
277 __u32 amp_min_latency;
278 __u32 amp_max_pdu;
279 __u8 amp_type;
280 __u16 amp_pal_cap;
281 __u16 amp_assoc_size;
282 __u32 amp_max_flush_to;
283 __u32 amp_be_flush_to;
284
285 struct amp_assoc loc_assoc;
286
287 __u8 flow_ctl_mode;
288
289 unsigned int auto_accept_delay;
290
291 unsigned long quirks;
292
293 atomic_t cmd_cnt;
294 unsigned int acl_cnt;
295 unsigned int sco_cnt;
296 unsigned int le_cnt;
297
298 unsigned int acl_mtu;
299 unsigned int sco_mtu;
300 unsigned int le_mtu;
301 unsigned int acl_pkts;
302 unsigned int sco_pkts;
303 unsigned int le_pkts;
304
305 __u16 block_len;
306 __u16 block_mtu;
307 __u16 num_blocks;
308 __u16 block_cnt;
309
310 unsigned long acl_last_tx;
311 unsigned long sco_last_tx;
312 unsigned long le_last_tx;
313
314 struct workqueue_struct *workqueue;
315 struct workqueue_struct *req_workqueue;
316
317 struct work_struct power_on;
318 struct delayed_work power_off;
319 struct work_struct error_reset;
320
321 __u16 discov_timeout;
322 struct delayed_work discov_off;
323
324 struct delayed_work service_cache;
325
326 struct delayed_work cmd_timer;
327
328 struct work_struct rx_work;
329 struct work_struct cmd_work;
330 struct work_struct tx_work;
331
332 struct work_struct discov_update;
333 struct work_struct bg_scan_update;
334 struct work_struct scan_update;
335 struct work_struct connectable_update;
336 struct work_struct discoverable_update;
337 struct delayed_work le_scan_disable;
338 struct delayed_work le_scan_restart;
339
340 struct sk_buff_head rx_q;
341 struct sk_buff_head raw_q;
342 struct sk_buff_head cmd_q;
343
344 struct sk_buff *sent_cmd;
345
346 struct mutex req_lock;
347 wait_queue_head_t req_wait_q;
348 __u32 req_status;
349 __u32 req_result;
350 struct sk_buff *req_skb;
351
352 void *smp_data;
353 void *smp_bredr_data;
354
355 struct discovery_state discovery;
356 struct hci_conn_hash conn_hash;
357
358 struct list_head mgmt_pending;
359 struct list_head blacklist;
360 struct list_head whitelist;
361 struct list_head uuids;
362 struct list_head link_keys;
363 struct list_head long_term_keys;
364 struct list_head identity_resolving_keys;
365 struct list_head remote_oob_data;
366 struct list_head le_white_list;
367 struct list_head le_conn_params;
368 struct list_head pend_le_conns;
369 struct list_head pend_le_reports;
370
371 struct hci_dev_stats stat;
372
373 atomic_t promisc;
374
375 struct dentry *debugfs;
376
377 struct device dev;
378
379 struct rfkill *rfkill;
380
381 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
382
383 __s8 adv_tx_power;
384 __u8 adv_data[HCI_MAX_AD_LENGTH];
385 __u8 adv_data_len;
386 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
387 __u8 scan_rsp_data_len;
388
389 struct list_head adv_instances;
390 unsigned int adv_instance_cnt;
391 __u8 cur_adv_instance;
392 __u16 adv_instance_timeout;
393 struct delayed_work adv_instance_expire;
394
395 __u8 irk[16];
396 __u32 rpa_timeout;
397 struct delayed_work rpa_expired;
398 bdaddr_t rpa;
399
400 struct led_trigger *power_led;
401
402 int (*open)(struct hci_dev *hdev);
403 int (*close)(struct hci_dev *hdev);
404 int (*flush)(struct hci_dev *hdev);
405 int (*setup)(struct hci_dev *hdev);
406 int (*shutdown)(struct hci_dev *hdev);
407 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
408 void (*notify)(struct hci_dev *hdev, unsigned int evt);
409 void (*hw_error)(struct hci_dev *hdev, u8 code);
410 int (*post_init)(struct hci_dev *hdev);
411 int (*set_diag)(struct hci_dev *hdev, bool enable);
412 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
413};
414
415#define HCI_PHY_HANDLE(handle) (handle & 0xff)
416
417struct hci_conn {
418 struct list_head list;
419
420 atomic_t refcnt;
421
422 bdaddr_t dst;
423 __u8 dst_type;
424 bdaddr_t src;
425 __u8 src_type;
426 bdaddr_t init_addr;
427 __u8 init_addr_type;
428 bdaddr_t resp_addr;
429 __u8 resp_addr_type;
430 __u16 handle;
431 __u16 state;
432 __u8 mode;
433 __u8 type;
434 __u8 role;
435 bool out;
436 __u8 attempt;
437 __u8 dev_class[3];
438 __u8 features[HCI_MAX_PAGES][8];
439 __u16 pkt_type;
440 __u16 link_policy;
441 __u8 key_type;
442 __u8 auth_type;
443 __u8 sec_level;
444 __u8 pending_sec_level;
445 __u8 pin_length;
446 __u8 enc_key_size;
447 __u8 io_capability;
448 __u32 passkey_notify;
449 __u8 passkey_entered;
450 __u16 disc_timeout;
451 __u16 conn_timeout;
452 __u16 setting;
453 __u16 le_conn_min_interval;
454 __u16 le_conn_max_interval;
455 __u16 le_conn_interval;
456 __u16 le_conn_latency;
457 __u16 le_supv_timeout;
458 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
459 __u8 le_adv_data_len;
460 __s8 rssi;
461 __s8 tx_power;
462 __s8 max_tx_power;
463 unsigned long flags;
464
465 __u32 clock;
466 __u16 clock_accuracy;
467
468 unsigned long conn_info_timestamp;
469
470 __u8 remote_cap;
471 __u8 remote_auth;
472 __u8 remote_id;
473
474 unsigned int sent;
475
476 struct sk_buff_head data_q;
477 struct list_head chan_list;
478
479 struct delayed_work disc_work;
480 struct delayed_work auto_accept_work;
481 struct delayed_work idle_work;
482 struct delayed_work le_conn_timeout;
483 struct work_struct le_scan_cleanup;
484
485 struct device dev;
486 struct dentry *debugfs;
487
488 struct hci_dev *hdev;
489 void *l2cap_data;
490 void *sco_data;
491 struct amp_mgr *amp_mgr;
492
493 struct hci_conn *link;
494
495 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
496 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
497 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
498};
499
500struct hci_chan {
501 struct list_head list;
502 __u16 handle;
503 struct hci_conn *conn;
504 struct sk_buff_head data_q;
505 unsigned int sent;
506 __u8 state;
507};
508
509struct hci_conn_params {
510 struct list_head list;
511 struct list_head action;
512
513 bdaddr_t addr;
514 u8 addr_type;
515
516 u16 conn_min_interval;
517 u16 conn_max_interval;
518 u16 conn_latency;
519 u16 supervision_timeout;
520
521 enum {
522 HCI_AUTO_CONN_DISABLED,
523 HCI_AUTO_CONN_REPORT,
524 HCI_AUTO_CONN_DIRECT,
525 HCI_AUTO_CONN_ALWAYS,
526 HCI_AUTO_CONN_LINK_LOSS,
527 HCI_AUTO_CONN_EXPLICIT,
528 } auto_connect;
529
530 struct hci_conn *conn;
531 bool explicit_connect;
532};
533
534extern struct list_head hci_dev_list;
535extern struct list_head hci_cb_list;
536extern rwlock_t hci_dev_list_lock;
537extern struct mutex hci_cb_list_lock;
538
539#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
540#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
541#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
542#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
543#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
544#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
545#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
546
547#define hci_dev_clear_volatile_flags(hdev) \
548 do { \
549 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
550 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
551 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
552 } while (0)
553
554/* ----- HCI interface to upper protocols ----- */
555int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
556int l2cap_disconn_ind(struct hci_conn *hcon);
557void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
558
559#if IS_ENABLED(CONFIG_BT_BREDR)
560int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
561void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
562#else
563static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
564 __u8 *flags)
565{
566 return 0;
567}
568
569static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
570{
571}
572#endif
573
574/* ----- Inquiry cache ----- */
575#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
576#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
577
578static inline void discovery_init(struct hci_dev *hdev)
579{
580 hdev->discovery.state = DISCOVERY_STOPPED;
581 INIT_LIST_HEAD(&hdev->discovery.all);
582 INIT_LIST_HEAD(&hdev->discovery.unknown);
583 INIT_LIST_HEAD(&hdev->discovery.resolve);
584 hdev->discovery.report_invalid_rssi = true;
585 hdev->discovery.rssi = HCI_RSSI_INVALID;
586}
587
588static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
589{
590 hdev->discovery.result_filtering = false;
591 hdev->discovery.report_invalid_rssi = true;
592 hdev->discovery.rssi = HCI_RSSI_INVALID;
593 hdev->discovery.uuid_count = 0;
594 kfree(hdev->discovery.uuids);
595 hdev->discovery.uuids = NULL;
596 hdev->discovery.scan_start = 0;
597 hdev->discovery.scan_duration = 0;
598}
599
600bool hci_discovery_active(struct hci_dev *hdev);
601
602void hci_discovery_set_state(struct hci_dev *hdev, int state);
603
604static inline int inquiry_cache_empty(struct hci_dev *hdev)
605{
606 return list_empty(&hdev->discovery.all);
607}
608
609static inline long inquiry_cache_age(struct hci_dev *hdev)
610{
611 struct discovery_state *c = &hdev->discovery;
612 return jiffies - c->timestamp;
613}
614
615static inline long inquiry_entry_age(struct inquiry_entry *e)
616{
617 return jiffies - e->timestamp;
618}
619
620struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
621 bdaddr_t *bdaddr);
622struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
623 bdaddr_t *bdaddr);
624struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
625 bdaddr_t *bdaddr,
626 int state);
627void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
628 struct inquiry_entry *ie);
629u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
630 bool name_known);
631void hci_inquiry_cache_flush(struct hci_dev *hdev);
632
633/* ----- HCI Connections ----- */
634enum {
635 HCI_CONN_AUTH_PEND,
636 HCI_CONN_REAUTH_PEND,
637 HCI_CONN_ENCRYPT_PEND,
638 HCI_CONN_RSWITCH_PEND,
639 HCI_CONN_MODE_CHANGE_PEND,
640 HCI_CONN_SCO_SETUP_PEND,
641 HCI_CONN_MGMT_CONNECTED,
642 HCI_CONN_SSP_ENABLED,
643 HCI_CONN_SC_ENABLED,
644 HCI_CONN_AES_CCM,
645 HCI_CONN_POWER_SAVE,
646 HCI_CONN_FLUSH_KEY,
647 HCI_CONN_ENCRYPT,
648 HCI_CONN_AUTH,
649 HCI_CONN_SECURE,
650 HCI_CONN_FIPS,
651 HCI_CONN_STK_ENCRYPT,
652 HCI_CONN_AUTH_INITIATOR,
653 HCI_CONN_DROP,
654 HCI_CONN_PARAM_REMOVAL_PEND,
655 HCI_CONN_NEW_LINK_KEY,
656 HCI_CONN_SCANNING,
657};
658
659static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
660{
661 struct hci_dev *hdev = conn->hdev;
662 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
663 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
664}
665
666static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
667{
668 struct hci_dev *hdev = conn->hdev;
669 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
670 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
671}
672
673static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
674{
675 struct hci_conn_hash *h = &hdev->conn_hash;
676 list_add_rcu(&c->list, &h->list);
677 switch (c->type) {
678 case ACL_LINK:
679 h->acl_num++;
680 break;
681 case AMP_LINK:
682 h->amp_num++;
683 break;
684 case LE_LINK:
685 h->le_num++;
686 if (c->role == HCI_ROLE_SLAVE)
687 h->le_num_slave++;
688 break;
689 case SCO_LINK:
690 case ESCO_LINK:
691 h->sco_num++;
692 break;
693 }
694}
695
696static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
697{
698 struct hci_conn_hash *h = &hdev->conn_hash;
699
700 list_del_rcu(&c->list);
701 synchronize_rcu();
702
703 switch (c->type) {
704 case ACL_LINK:
705 h->acl_num--;
706 break;
707 case AMP_LINK:
708 h->amp_num--;
709 break;
710 case LE_LINK:
711 h->le_num--;
712 if (c->role == HCI_ROLE_SLAVE)
713 h->le_num_slave--;
714 break;
715 case SCO_LINK:
716 case ESCO_LINK:
717 h->sco_num--;
718 break;
719 }
720}
721
722static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
723{
724 struct hci_conn_hash *h = &hdev->conn_hash;
725 switch (type) {
726 case ACL_LINK:
727 return h->acl_num;
728 case AMP_LINK:
729 return h->amp_num;
730 case LE_LINK:
731 return h->le_num;
732 case SCO_LINK:
733 case ESCO_LINK:
734 return h->sco_num;
735 default:
736 return 0;
737 }
738}
739
740static inline unsigned int hci_conn_count(struct hci_dev *hdev)
741{
742 struct hci_conn_hash *c = &hdev->conn_hash;
743
744 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
745}
746
747static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
748{
749 struct hci_conn_hash *h = &hdev->conn_hash;
750 struct hci_conn *c;
751 __u8 type = INVALID_LINK;
752
753 rcu_read_lock();
754
755 list_for_each_entry_rcu(c, &h->list, list) {
756 if (c->handle == handle) {
757 type = c->type;
758 break;
759 }
760 }
761
762 rcu_read_unlock();
763
764 return type;
765}
766
767static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
768 __u16 handle)
769{
770 struct hci_conn_hash *h = &hdev->conn_hash;
771 struct hci_conn *c;
772
773 rcu_read_lock();
774
775 list_for_each_entry_rcu(c, &h->list, list) {
776 if (c->handle == handle) {
777 rcu_read_unlock();
778 return c;
779 }
780 }
781 rcu_read_unlock();
782
783 return NULL;
784}
785
786static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
787 __u8 type, bdaddr_t *ba)
788{
789 struct hci_conn_hash *h = &hdev->conn_hash;
790 struct hci_conn *c;
791
792 rcu_read_lock();
793
794 list_for_each_entry_rcu(c, &h->list, list) {
795 if (c->type == type && !bacmp(&c->dst, ba)) {
796 rcu_read_unlock();
797 return c;
798 }
799 }
800
801 rcu_read_unlock();
802
803 return NULL;
804}
805
806static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
807 bdaddr_t *ba,
808 __u8 ba_type)
809{
810 struct hci_conn_hash *h = &hdev->conn_hash;
811 struct hci_conn *c;
812
813 rcu_read_lock();
814
815 list_for_each_entry_rcu(c, &h->list, list) {
816 if (c->type != LE_LINK)
817 continue;
818
819 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
820 rcu_read_unlock();
821 return c;
822 }
823 }
824
825 rcu_read_unlock();
826
827 return NULL;
828}
829
830static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
831 __u8 type, __u16 state)
832{
833 struct hci_conn_hash *h = &hdev->conn_hash;
834 struct hci_conn *c;
835
836 rcu_read_lock();
837
838 list_for_each_entry_rcu(c, &h->list, list) {
839 if (c->type == type && c->state == state) {
840 rcu_read_unlock();
841 return c;
842 }
843 }
844
845 rcu_read_unlock();
846
847 return NULL;
848}
849
850static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
851{
852 struct hci_conn_hash *h = &hdev->conn_hash;
853 struct hci_conn *c;
854
855 rcu_read_lock();
856
857 list_for_each_entry_rcu(c, &h->list, list) {
858 if (c->type == LE_LINK && c->state == BT_CONNECT &&
859 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
860 rcu_read_unlock();
861 return c;
862 }
863 }
864
865 rcu_read_unlock();
866
867 return NULL;
868}
869
870int hci_disconnect(struct hci_conn *conn, __u8 reason);
871bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
872void hci_sco_setup(struct hci_conn *conn, __u8 status);
873
874struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
875 u8 role);
876int hci_conn_del(struct hci_conn *conn);
877void hci_conn_hash_flush(struct hci_dev *hdev);
878void hci_conn_check_pending(struct hci_dev *hdev);
879
880struct hci_chan *hci_chan_create(struct hci_conn *conn);
881void hci_chan_del(struct hci_chan *chan);
882void hci_chan_list_flush(struct hci_conn *conn);
883struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
884
885struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
886 u8 dst_type, u8 sec_level,
887 u16 conn_timeout);
888struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
889 u8 dst_type, u8 sec_level, u16 conn_timeout,
890 u8 role);
891struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
892 u8 sec_level, u8 auth_type);
893struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
894 __u16 setting);
895int hci_conn_check_link_mode(struct hci_conn *conn);
896int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
897int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
898 bool initiator);
899int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
900
901void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
902
903void hci_le_conn_failed(struct hci_conn *conn, u8 status);
904
905/*
906 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
907 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
908 * working or anything else. They just guarantee that the object is available
909 * and can be dereferenced. So you can use its locks, local variables and any
910 * other constant data.
911 * Before accessing runtime data, you _must_ lock the object and then check that
912 * it is still running. As soon as you release the locks, the connection might
913 * get dropped, though.
914 *
915 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
916 * how long the underlying connection is held. So every channel that runs on the
917 * hci_conn object calls this to prevent the connection from disappearing. As
918 * long as you hold a device, you must also guarantee that you have a valid
919 * reference to the device via hci_conn_get() (or the initial reference from
920 * hci_conn_add()).
921 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
922 * break because nobody cares for that. But this means, we cannot use
923 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
924 */
925
926static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
927{
928 get_device(&conn->dev);
929 return conn;
930}
931
932static inline void hci_conn_put(struct hci_conn *conn)
933{
934 put_device(&conn->dev);
935}
936
937static inline void hci_conn_hold(struct hci_conn *conn)
938{
939 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
940
941 atomic_inc(&conn->refcnt);
942 cancel_delayed_work(&conn->disc_work);
943}
944
945static inline void hci_conn_drop(struct hci_conn *conn)
946{
947 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
948
949 if (atomic_dec_and_test(&conn->refcnt)) {
950 unsigned long timeo;
951
952 switch (conn->type) {
953 case ACL_LINK:
954 case LE_LINK:
955 cancel_delayed_work(&conn->idle_work);
956 if (conn->state == BT_CONNECTED) {
957 timeo = conn->disc_timeout;
958 if (!conn->out)
959 timeo *= 2;
960 } else {
961 timeo = 0;
962 }
963 break;
964
965 case AMP_LINK:
966 timeo = conn->disc_timeout;
967 break;
968
969 default:
970 timeo = 0;
971 break;
972 }
973
974 cancel_delayed_work(&conn->disc_work);
975 queue_delayed_work(conn->hdev->workqueue,
976 &conn->disc_work, timeo);
977 }
978}
979
980/* ----- HCI Devices ----- */
981static inline void hci_dev_put(struct hci_dev *d)
982{
983 BT_DBG("%s orig refcnt %d", d->name,
984 atomic_read(&d->dev.kobj.kref.refcount));
985
986 put_device(&d->dev);
987}
988
989static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
990{
991 BT_DBG("%s orig refcnt %d", d->name,
992 atomic_read(&d->dev.kobj.kref.refcount));
993
994 get_device(&d->dev);
995 return d;
996}
997
998#define hci_dev_lock(d) mutex_lock(&d->lock)
999#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1000
1001#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1002#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1003
1004static inline void *hci_get_drvdata(struct hci_dev *hdev)
1005{
1006 return dev_get_drvdata(&hdev->dev);
1007}
1008
1009static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1010{
1011 dev_set_drvdata(&hdev->dev, data);
1012}
1013
1014struct hci_dev *hci_dev_get(int index);
1015struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
1016
1017struct hci_dev *hci_alloc_dev(void);
1018void hci_free_dev(struct hci_dev *hdev);
1019int hci_register_dev(struct hci_dev *hdev);
1020void hci_unregister_dev(struct hci_dev *hdev);
1021int hci_suspend_dev(struct hci_dev *hdev);
1022int hci_resume_dev(struct hci_dev *hdev);
1023int hci_reset_dev(struct hci_dev *hdev);
1024int hci_dev_open(__u16 dev);
1025int hci_dev_close(__u16 dev);
1026int hci_dev_do_close(struct hci_dev *hdev);
1027int hci_dev_reset(__u16 dev);
1028int hci_dev_reset_stat(__u16 dev);
1029int hci_dev_cmd(unsigned int cmd, void __user *arg);
1030int hci_get_dev_list(void __user *arg);
1031int hci_get_dev_info(void __user *arg);
1032int hci_get_conn_list(void __user *arg);
1033int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1034int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1035int hci_inquiry(void __user *arg);
1036
1037struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1038 bdaddr_t *bdaddr, u8 type);
1039int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1040int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1041void hci_bdaddr_list_clear(struct list_head *list);
1042
1043struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1044 bdaddr_t *addr, u8 addr_type);
1045struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1046 bdaddr_t *addr, u8 addr_type);
1047void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1048void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1049
1050struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1051 bdaddr_t *addr,
1052 u8 addr_type);
1053
1054void hci_uuids_clear(struct hci_dev *hdev);
1055
1056void hci_link_keys_clear(struct hci_dev *hdev);
1057struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1058struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1059 bdaddr_t *bdaddr, u8 *val, u8 type,
1060 u8 pin_len, bool *persistent);
1061struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1062 u8 addr_type, u8 type, u8 authenticated,
1063 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1064struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1065 u8 addr_type, u8 role);
1066int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1067void hci_smp_ltks_clear(struct hci_dev *hdev);
1068int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1069
1070struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1071struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1072 u8 addr_type);
1073struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1074 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1075void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1076void hci_smp_irks_clear(struct hci_dev *hdev);
1077
1078bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1079
1080void hci_remote_oob_data_clear(struct hci_dev *hdev);
1081struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1082 bdaddr_t *bdaddr, u8 bdaddr_type);
1083int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1085 u8 *hash256, u8 *rand256);
1086int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1087 u8 bdaddr_type);
1088
1089void hci_adv_instances_clear(struct hci_dev *hdev);
1090struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1091struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1092int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1093 u16 adv_data_len, u8 *adv_data,
1094 u16 scan_rsp_len, u8 *scan_rsp_data,
1095 u16 timeout, u16 duration);
1096int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1097
1098void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1099
1100int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1101int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1102
1103void hci_init_sysfs(struct hci_dev *hdev);
1104void hci_conn_init_sysfs(struct hci_conn *conn);
1105void hci_conn_add_sysfs(struct hci_conn *conn);
1106void hci_conn_del_sysfs(struct hci_conn *conn);
1107
1108#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1109
1110/* ----- LMP capabilities ----- */
1111#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1112#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1113#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1114#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1115#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1116#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1117#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1118#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1119#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1120#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1121#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1122#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1123#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1124#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1125#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1126#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1127#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1128#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1129#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1130
1131/* ----- Extended LMP capabilities ----- */
1132#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1133#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1134#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1135#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1136#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1137#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1138
1139/* ----- Host capabilities ----- */
1140#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1141#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1142#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1143#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1144
1145#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1146 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1147#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1148 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1149
1150/* ----- HCI protocols ----- */
1151#define HCI_PROTO_DEFER 0x01
1152
1153static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1154 __u8 type, __u8 *flags)
1155{
1156 switch (type) {
1157 case ACL_LINK:
1158 return l2cap_connect_ind(hdev, bdaddr);
1159
1160 case SCO_LINK:
1161 case ESCO_LINK:
1162 return sco_connect_ind(hdev, bdaddr, flags);
1163
1164 default:
1165 BT_ERR("unknown link type %d", type);
1166 return -EINVAL;
1167 }
1168}
1169
1170static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1171{
1172 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1173 return HCI_ERROR_REMOTE_USER_TERM;
1174
1175 return l2cap_disconn_ind(conn);
1176}
1177
1178/* ----- HCI callbacks ----- */
1179struct hci_cb {
1180 struct list_head list;
1181
1182 char *name;
1183
1184 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1185 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1186 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1187 __u8 encrypt);
1188 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1189 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1190};
1191
1192static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1193{
1194 struct hci_cb *cb;
1195
1196 mutex_lock(&hci_cb_list_lock);
1197 list_for_each_entry(cb, &hci_cb_list, list) {
1198 if (cb->connect_cfm)
1199 cb->connect_cfm(conn, status);
1200 }
1201 mutex_unlock(&hci_cb_list_lock);
1202
1203 if (conn->connect_cfm_cb)
1204 conn->connect_cfm_cb(conn, status);
1205}
1206
1207static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1208{
1209 struct hci_cb *cb;
1210
1211 mutex_lock(&hci_cb_list_lock);
1212 list_for_each_entry(cb, &hci_cb_list, list) {
1213 if (cb->disconn_cfm)
1214 cb->disconn_cfm(conn, reason);
1215 }
1216 mutex_unlock(&hci_cb_list_lock);
1217
1218 if (conn->disconn_cfm_cb)
1219 conn->disconn_cfm_cb(conn, reason);
1220}
1221
1222static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1223{
1224 struct hci_cb *cb;
1225 __u8 encrypt;
1226
1227 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1228 return;
1229
1230 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1231
1232 mutex_lock(&hci_cb_list_lock);
1233 list_for_each_entry(cb, &hci_cb_list, list) {
1234 if (cb->security_cfm)
1235 cb->security_cfm(conn, status, encrypt);
1236 }
1237 mutex_unlock(&hci_cb_list_lock);
1238
1239 if (conn->security_cfm_cb)
1240 conn->security_cfm_cb(conn, status);
1241}
1242
1243static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1244 __u8 encrypt)
1245{
1246 struct hci_cb *cb;
1247
1248 if (conn->sec_level == BT_SECURITY_SDP)
1249 conn->sec_level = BT_SECURITY_LOW;
1250
1251 if (conn->pending_sec_level > conn->sec_level)
1252 conn->sec_level = conn->pending_sec_level;
1253
1254 mutex_lock(&hci_cb_list_lock);
1255 list_for_each_entry(cb, &hci_cb_list, list) {
1256 if (cb->security_cfm)
1257 cb->security_cfm(conn, status, encrypt);
1258 }
1259 mutex_unlock(&hci_cb_list_lock);
1260
1261 if (conn->security_cfm_cb)
1262 conn->security_cfm_cb(conn, status);
1263}
1264
1265static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1266{
1267 struct hci_cb *cb;
1268
1269 mutex_lock(&hci_cb_list_lock);
1270 list_for_each_entry(cb, &hci_cb_list, list) {
1271 if (cb->key_change_cfm)
1272 cb->key_change_cfm(conn, status);
1273 }
1274 mutex_unlock(&hci_cb_list_lock);
1275}
1276
1277static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1278 __u8 role)
1279{
1280 struct hci_cb *cb;
1281
1282 mutex_lock(&hci_cb_list_lock);
1283 list_for_each_entry(cb, &hci_cb_list, list) {
1284 if (cb->role_switch_cfm)
1285 cb->role_switch_cfm(conn, status, role);
1286 }
1287 mutex_unlock(&hci_cb_list_lock);
1288}
1289
1290static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1291 size_t *data_len)
1292{
1293 size_t parsed = 0;
1294
1295 if (eir_len < 2)
1296 return NULL;
1297
1298 while (parsed < eir_len - 1) {
1299 u8 field_len = eir[0];
1300
1301 if (field_len == 0)
1302 break;
1303
1304 parsed += field_len + 1;
1305
1306 if (parsed > eir_len)
1307 break;
1308
1309 if (eir[1] != type) {
1310 eir += field_len + 1;
1311 continue;
1312 }
1313
1314 /* Zero length data */
1315 if (field_len == 1)
1316 return NULL;
1317
1318 if (data_len)
1319 *data_len = field_len - 1;
1320
1321 return &eir[2];
1322 }
1323
1324 return NULL;
1325}
1326
1327static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1328{
1329 if (addr_type != ADDR_LE_DEV_RANDOM)
1330 return false;
1331
1332 if ((bdaddr->b[5] & 0xc0) == 0x40)
1333 return true;
1334
1335 return false;
1336}
1337
1338static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1339{
1340 if (addr_type == ADDR_LE_DEV_PUBLIC)
1341 return true;
1342
1343 /* Check for Random Static address type */
1344 if ((addr->b[5] & 0xc0) == 0xc0)
1345 return true;
1346
1347 return false;
1348}
1349
1350static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1351 bdaddr_t *bdaddr, u8 addr_type)
1352{
1353 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1354 return NULL;
1355
1356 return hci_find_irk_by_rpa(hdev, bdaddr);
1357}
1358
1359static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1360 u16 to_multiplier)
1361{
1362 u16 max_latency;
1363
1364 if (min > max || min < 6 || max > 3200)
1365 return -EINVAL;
1366
1367 if (to_multiplier < 10 || to_multiplier > 3200)
1368 return -EINVAL;
1369
1370 if (max >= to_multiplier * 8)
1371 return -EINVAL;
1372
1373 max_latency = (to_multiplier * 4 / max) - 1;
1374 if (latency > 499 || latency > max_latency)
1375 return -EINVAL;
1376
1377 return 0;
1378}
1379
1380int hci_register_cb(struct hci_cb *hcb);
1381int hci_unregister_cb(struct hci_cb *hcb);
1382
1383struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1384 const void *param, u32 timeout);
1385struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1386 const void *param, u8 event, u32 timeout);
1387
1388int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1389 const void *param);
1390void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1391void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1392
1393void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1394
1395struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1396 const void *param, u32 timeout);
1397
1398/* ----- HCI Sockets ----- */
1399void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1400void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1401 int flag, struct sock *skip_sk);
1402void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1403
1404void hci_sock_dev_event(struct hci_dev *hdev, int event);
1405
1406#define HCI_MGMT_VAR_LEN BIT(0)
1407#define HCI_MGMT_NO_HDEV BIT(1)
1408#define HCI_MGMT_UNTRUSTED BIT(2)
1409#define HCI_MGMT_UNCONFIGURED BIT(3)
1410
1411struct hci_mgmt_handler {
1412 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1413 u16 data_len);
1414 size_t data_len;
1415 unsigned long flags;
1416};
1417
1418struct hci_mgmt_chan {
1419 struct list_head list;
1420 unsigned short channel;
1421 size_t handler_count;
1422 const struct hci_mgmt_handler *handlers;
1423 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1424};
1425
1426int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1427void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1428
1429/* Management interface */
1430#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1431#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1432 BIT(BDADDR_LE_RANDOM))
1433#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1434 BIT(BDADDR_LE_PUBLIC) | \
1435 BIT(BDADDR_LE_RANDOM))
1436
1437/* These LE scan and inquiry parameters were chosen according to LE General
1438 * Discovery Procedure specification.
1439 */
1440#define DISCOV_LE_SCAN_WIN 0x12
1441#define DISCOV_LE_SCAN_INT 0x12
1442#define DISCOV_LE_TIMEOUT 10240 /* msec */
1443#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1444#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1445#define DISCOV_BREDR_INQUIRY_LEN 0x08
1446#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1447
1448int mgmt_new_settings(struct hci_dev *hdev);
1449void mgmt_index_added(struct hci_dev *hdev);
1450void mgmt_index_removed(struct hci_dev *hdev);
1451void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1452void mgmt_power_on(struct hci_dev *hdev, int err);
1453void __mgmt_power_off(struct hci_dev *hdev);
1454void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1455 bool persistent);
1456void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1457 u32 flags, u8 *name, u8 name_len);
1458void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1459 u8 link_type, u8 addr_type, u8 reason,
1460 bool mgmt_connected);
1461void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1462 u8 link_type, u8 addr_type, u8 status);
1463void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1464 u8 addr_type, u8 status);
1465void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1466void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1467 u8 status);
1468void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1469 u8 status);
1470int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1471 u8 link_type, u8 addr_type, u32 value,
1472 u8 confirm_hint);
1473int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1474 u8 link_type, u8 addr_type, u8 status);
1475int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1476 u8 link_type, u8 addr_type, u8 status);
1477int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1478 u8 link_type, u8 addr_type);
1479int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 u8 link_type, u8 addr_type, u8 status);
1481int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 link_type, u8 addr_type, u8 status);
1483int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1484 u8 link_type, u8 addr_type, u32 passkey,
1485 u8 entered);
1486void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1487void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1488void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1489void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1490 u8 status);
1491void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1492void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1493void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1494void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1495 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1496 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1497void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1498 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1499void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1500bool mgmt_powering_down(struct hci_dev *hdev);
1501void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1502void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1503void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1504 bool persistent);
1505void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1506 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1507 u16 max_interval, u16 latency, u16 timeout);
1508void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1509bool mgmt_get_connectable(struct hci_dev *hdev);
1510void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1511void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1512u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1513void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1514 u8 instance);
1515void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1516 u8 instance);
1517
1518u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1519 u16 to_multiplier);
1520void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1521 __u8 ltk[16], __u8 key_size);
1522
1523void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1524 u8 *bdaddr_type);
1525
1526#define SCO_AIRMODE_MASK 0x0003
1527#define SCO_AIRMODE_CVSD 0x0000
1528#define SCO_AIRMODE_TRANSP 0x0003
1529
1530#endif /* __HCI_CORE_H */
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <linux/idr.h>
29#include <linux/leds.h>
30#include <linux/rculist.h>
31
32#include <net/bluetooth/hci.h>
33#include <net/bluetooth/hci_sync.h>
34#include <net/bluetooth/hci_sock.h>
35
36/* HCI priority */
37#define HCI_PRIO_MAX 7
38
39/* HCI maximum id value */
40#define HCI_MAX_ID 10000
41
42/* HCI Core structures */
43struct inquiry_data {
44 bdaddr_t bdaddr;
45 __u8 pscan_rep_mode;
46 __u8 pscan_period_mode;
47 __u8 pscan_mode;
48 __u8 dev_class[3];
49 __le16 clock_offset;
50 __s8 rssi;
51 __u8 ssp_mode;
52};
53
54struct inquiry_entry {
55 struct list_head all; /* inq_cache.all */
56 struct list_head list; /* unknown or resolve */
57 enum {
58 NAME_NOT_KNOWN,
59 NAME_NEEDED,
60 NAME_PENDING,
61 NAME_KNOWN,
62 } name_state;
63 __u32 timestamp;
64 struct inquiry_data data;
65};
66
67struct discovery_state {
68 int type;
69 enum {
70 DISCOVERY_STOPPED,
71 DISCOVERY_STARTING,
72 DISCOVERY_FINDING,
73 DISCOVERY_RESOLVING,
74 DISCOVERY_STOPPING,
75 } state;
76 struct list_head all; /* All devices found during inquiry */
77 struct list_head unknown; /* Name state not known */
78 struct list_head resolve; /* Name needs to be resolved */
79 __u32 timestamp;
80 bdaddr_t last_adv_addr;
81 u8 last_adv_addr_type;
82 s8 last_adv_rssi;
83 u32 last_adv_flags;
84 u8 last_adv_data[HCI_MAX_AD_LENGTH];
85 u8 last_adv_data_len;
86 bool report_invalid_rssi;
87 bool result_filtering;
88 bool limited;
89 s8 rssi;
90 u16 uuid_count;
91 u8 (*uuids)[16];
92 unsigned long scan_start;
93 unsigned long scan_duration;
94 unsigned long name_resolve_timeout;
95};
96
97#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98
99enum suspend_tasks {
100 SUSPEND_PAUSE_DISCOVERY,
101 SUSPEND_UNPAUSE_DISCOVERY,
102
103 SUSPEND_PAUSE_ADVERTISING,
104 SUSPEND_UNPAUSE_ADVERTISING,
105
106 SUSPEND_SCAN_DISABLE,
107 SUSPEND_SCAN_ENABLE,
108 SUSPEND_DISCONNECTING,
109
110 SUSPEND_POWERING_DOWN,
111
112 SUSPEND_PREPARE_NOTIFIER,
113
114 SUSPEND_SET_ADV_FILTER,
115 __SUSPEND_NUM_TASKS
116};
117
118enum suspended_state {
119 BT_RUNNING = 0,
120 BT_SUSPEND_DISCONNECT,
121 BT_SUSPEND_CONFIGURE_WAKE,
122};
123
124struct hci_conn_hash {
125 struct list_head list;
126 unsigned int acl_num;
127 unsigned int amp_num;
128 unsigned int sco_num;
129 unsigned int iso_num;
130 unsigned int le_num;
131 unsigned int le_num_peripheral;
132};
133
134struct bdaddr_list {
135 struct list_head list;
136 bdaddr_t bdaddr;
137 u8 bdaddr_type;
138};
139
140struct codec_list {
141 struct list_head list;
142 u8 id;
143 __u16 cid;
144 __u16 vid;
145 u8 transport;
146 u8 num_caps;
147 u32 len;
148 struct hci_codec_caps caps[];
149};
150
151struct bdaddr_list_with_irk {
152 struct list_head list;
153 bdaddr_t bdaddr;
154 u8 bdaddr_type;
155 u8 peer_irk[16];
156 u8 local_irk[16];
157};
158
159/* Bitmask of connection flags */
160enum hci_conn_flags {
161 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
162 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
163};
164typedef u8 hci_conn_flags_t;
165
166struct bdaddr_list_with_flags {
167 struct list_head list;
168 bdaddr_t bdaddr;
169 u8 bdaddr_type;
170 hci_conn_flags_t flags;
171};
172
173struct bt_uuid {
174 struct list_head list;
175 u8 uuid[16];
176 u8 size;
177 u8 svc_hint;
178};
179
180struct blocked_key {
181 struct list_head list;
182 struct rcu_head rcu;
183 u8 type;
184 u8 val[16];
185};
186
187struct smp_csrk {
188 bdaddr_t bdaddr;
189 u8 bdaddr_type;
190 u8 type;
191 u8 val[16];
192};
193
194struct smp_ltk {
195 struct list_head list;
196 struct rcu_head rcu;
197 bdaddr_t bdaddr;
198 u8 bdaddr_type;
199 u8 authenticated;
200 u8 type;
201 u8 enc_size;
202 __le16 ediv;
203 __le64 rand;
204 u8 val[16];
205};
206
207struct smp_irk {
208 struct list_head list;
209 struct rcu_head rcu;
210 bdaddr_t rpa;
211 bdaddr_t bdaddr;
212 u8 addr_type;
213 u8 val[16];
214};
215
216struct link_key {
217 struct list_head list;
218 struct rcu_head rcu;
219 bdaddr_t bdaddr;
220 u8 type;
221 u8 val[HCI_LINK_KEY_SIZE];
222 u8 pin_len;
223};
224
225struct oob_data {
226 struct list_head list;
227 bdaddr_t bdaddr;
228 u8 bdaddr_type;
229 u8 present;
230 u8 hash192[16];
231 u8 rand192[16];
232 u8 hash256[16];
233 u8 rand256[16];
234};
235
236struct adv_info {
237 struct list_head list;
238 bool enabled;
239 bool pending;
240 bool periodic;
241 __u8 mesh;
242 __u8 instance;
243 __u32 flags;
244 __u16 timeout;
245 __u16 remaining_time;
246 __u16 duration;
247 __u16 adv_data_len;
248 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
249 bool adv_data_changed;
250 __u16 scan_rsp_len;
251 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
252 bool scan_rsp_changed;
253 __u16 per_adv_data_len;
254 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
255 __s8 tx_power;
256 __u32 min_interval;
257 __u32 max_interval;
258 bdaddr_t random_addr;
259 bool rpa_expired;
260 struct delayed_work rpa_expired_cb;
261};
262
263#define HCI_MAX_ADV_INSTANCES 5
264#define HCI_DEFAULT_ADV_DURATION 2
265
266#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
267
268#define DATA_CMP(_d1, _l1, _d2, _l2) \
269 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
270
271#define ADV_DATA_CMP(_adv, _data, _len) \
272 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
273
274#define SCAN_RSP_CMP(_adv, _data, _len) \
275 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
276
277struct monitored_device {
278 struct list_head list;
279
280 bdaddr_t bdaddr;
281 __u8 addr_type;
282 __u16 handle;
283 bool notified;
284};
285
286struct adv_pattern {
287 struct list_head list;
288 __u8 ad_type;
289 __u8 offset;
290 __u8 length;
291 __u8 value[HCI_MAX_AD_LENGTH];
292};
293
294struct adv_rssi_thresholds {
295 __s8 low_threshold;
296 __s8 high_threshold;
297 __u16 low_threshold_timeout;
298 __u16 high_threshold_timeout;
299 __u8 sampling_period;
300};
301
302struct adv_monitor {
303 struct list_head patterns;
304 struct adv_rssi_thresholds rssi;
305 __u16 handle;
306
307 enum {
308 ADV_MONITOR_STATE_NOT_REGISTERED,
309 ADV_MONITOR_STATE_REGISTERED,
310 ADV_MONITOR_STATE_OFFLOADED
311 } state;
312};
313
314#define HCI_MIN_ADV_MONITOR_HANDLE 1
315#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
316#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
317#define HCI_ADV_MONITOR_EXT_NONE 1
318#define HCI_ADV_MONITOR_EXT_MSFT 2
319
320#define HCI_MAX_SHORT_NAME_LENGTH 10
321
322#define HCI_CONN_HANDLE_UNSET 0xffff
323#define HCI_CONN_HANDLE_MAX 0x0eff
324
325/* Min encryption key size to match with SMP */
326#define HCI_MIN_ENC_KEY_SIZE 7
327
328/* Default LE RPA expiry time, 15 minutes */
329#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
330
331/* Default min/max age of connection information (1s/3s) */
332#define DEFAULT_CONN_INFO_MIN_AGE 1000
333#define DEFAULT_CONN_INFO_MAX_AGE 3000
334/* Default authenticated payload timeout 30s */
335#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
336
337struct amp_assoc {
338 __u16 len;
339 __u16 offset;
340 __u16 rem_len;
341 __u16 len_so_far;
342 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
343};
344
345#define HCI_MAX_PAGES 3
346
347struct hci_dev {
348 struct list_head list;
349 struct mutex lock;
350
351 char name[8];
352 unsigned long flags;
353 __u16 id;
354 __u8 bus;
355 __u8 dev_type;
356 bdaddr_t bdaddr;
357 bdaddr_t setup_addr;
358 bdaddr_t public_addr;
359 bdaddr_t random_addr;
360 bdaddr_t static_addr;
361 __u8 adv_addr_type;
362 __u8 dev_name[HCI_MAX_NAME_LENGTH];
363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
364 __u8 eir[HCI_MAX_EIR_LENGTH];
365 __u16 appearance;
366 __u8 dev_class[3];
367 __u8 major_class;
368 __u8 minor_class;
369 __u8 max_page;
370 __u8 features[HCI_MAX_PAGES][8];
371 __u8 le_features[8];
372 __u8 le_accept_list_size;
373 __u8 le_resolv_list_size;
374 __u8 le_num_of_adv_sets;
375 __u8 le_states[8];
376 __u8 mesh_ad_types[16];
377 __u8 mesh_send_ref;
378 __u8 commands[64];
379 __u8 hci_ver;
380 __u16 hci_rev;
381 __u8 lmp_ver;
382 __u16 manufacturer;
383 __u16 lmp_subver;
384 __u16 voice_setting;
385 __u8 num_iac;
386 __u16 stored_max_keys;
387 __u16 stored_num_keys;
388 __u8 io_capability;
389 __s8 inq_tx_power;
390 __u8 err_data_reporting;
391 __u16 page_scan_interval;
392 __u16 page_scan_window;
393 __u8 page_scan_type;
394 __u8 le_adv_channel_map;
395 __u16 le_adv_min_interval;
396 __u16 le_adv_max_interval;
397 __u8 le_scan_type;
398 __u16 le_scan_interval;
399 __u16 le_scan_window;
400 __u16 le_scan_int_suspend;
401 __u16 le_scan_window_suspend;
402 __u16 le_scan_int_discovery;
403 __u16 le_scan_window_discovery;
404 __u16 le_scan_int_adv_monitor;
405 __u16 le_scan_window_adv_monitor;
406 __u16 le_scan_int_connect;
407 __u16 le_scan_window_connect;
408 __u16 le_conn_min_interval;
409 __u16 le_conn_max_interval;
410 __u16 le_conn_latency;
411 __u16 le_supv_timeout;
412 __u16 le_def_tx_len;
413 __u16 le_def_tx_time;
414 __u16 le_max_tx_len;
415 __u16 le_max_tx_time;
416 __u16 le_max_rx_len;
417 __u16 le_max_rx_time;
418 __u8 le_max_key_size;
419 __u8 le_min_key_size;
420 __u16 discov_interleaved_timeout;
421 __u16 conn_info_min_age;
422 __u16 conn_info_max_age;
423 __u16 auth_payload_timeout;
424 __u8 min_enc_key_size;
425 __u8 max_enc_key_size;
426 __u8 pairing_opts;
427 __u8 ssp_debug_mode;
428 __u8 hw_error_code;
429 __u32 clock;
430 __u16 advmon_allowlist_duration;
431 __u16 advmon_no_filter_duration;
432 __u8 enable_advmon_interleave_scan;
433
434 __u16 devid_source;
435 __u16 devid_vendor;
436 __u16 devid_product;
437 __u16 devid_version;
438
439 __u8 def_page_scan_type;
440 __u16 def_page_scan_int;
441 __u16 def_page_scan_window;
442 __u8 def_inq_scan_type;
443 __u16 def_inq_scan_int;
444 __u16 def_inq_scan_window;
445 __u16 def_br_lsto;
446 __u16 def_page_timeout;
447 __u16 def_multi_adv_rotation_duration;
448 __u16 def_le_autoconnect_timeout;
449 __s8 min_le_tx_power;
450 __s8 max_le_tx_power;
451
452 __u16 pkt_type;
453 __u16 esco_type;
454 __u16 link_policy;
455 __u16 link_mode;
456
457 __u32 idle_timeout;
458 __u16 sniff_min_interval;
459 __u16 sniff_max_interval;
460
461 __u8 amp_status;
462 __u32 amp_total_bw;
463 __u32 amp_max_bw;
464 __u32 amp_min_latency;
465 __u32 amp_max_pdu;
466 __u8 amp_type;
467 __u16 amp_pal_cap;
468 __u16 amp_assoc_size;
469 __u32 amp_max_flush_to;
470 __u32 amp_be_flush_to;
471
472 struct amp_assoc loc_assoc;
473
474 __u8 flow_ctl_mode;
475
476 unsigned int auto_accept_delay;
477
478 unsigned long quirks;
479
480 atomic_t cmd_cnt;
481 unsigned int acl_cnt;
482 unsigned int sco_cnt;
483 unsigned int le_cnt;
484 unsigned int iso_cnt;
485
486 unsigned int acl_mtu;
487 unsigned int sco_mtu;
488 unsigned int le_mtu;
489 unsigned int iso_mtu;
490 unsigned int acl_pkts;
491 unsigned int sco_pkts;
492 unsigned int le_pkts;
493 unsigned int iso_pkts;
494
495 __u16 block_len;
496 __u16 block_mtu;
497 __u16 num_blocks;
498 __u16 block_cnt;
499
500 unsigned long acl_last_tx;
501 unsigned long sco_last_tx;
502 unsigned long le_last_tx;
503
504 __u8 le_tx_def_phys;
505 __u8 le_rx_def_phys;
506
507 struct workqueue_struct *workqueue;
508 struct workqueue_struct *req_workqueue;
509
510 struct work_struct power_on;
511 struct delayed_work power_off;
512 struct work_struct error_reset;
513 struct work_struct cmd_sync_work;
514 struct list_head cmd_sync_work_list;
515 struct mutex cmd_sync_work_lock;
516 struct work_struct cmd_sync_cancel_work;
517 struct work_struct reenable_adv_work;
518
519 __u16 discov_timeout;
520 struct delayed_work discov_off;
521
522 struct delayed_work service_cache;
523
524 struct delayed_work cmd_timer;
525 struct delayed_work ncmd_timer;
526
527 struct work_struct rx_work;
528 struct work_struct cmd_work;
529 struct work_struct tx_work;
530
531 struct delayed_work le_scan_disable;
532 struct delayed_work le_scan_restart;
533
534 struct sk_buff_head rx_q;
535 struct sk_buff_head raw_q;
536 struct sk_buff_head cmd_q;
537
538 struct sk_buff *sent_cmd;
539 struct sk_buff *recv_event;
540
541 struct mutex req_lock;
542 wait_queue_head_t req_wait_q;
543 __u32 req_status;
544 __u32 req_result;
545 struct sk_buff *req_skb;
546
547 void *smp_data;
548 void *smp_bredr_data;
549
550 struct discovery_state discovery;
551
552 int discovery_old_state;
553 bool discovery_paused;
554 int advertising_old_state;
555 bool advertising_paused;
556
557 struct notifier_block suspend_notifier;
558 enum suspended_state suspend_state_next;
559 enum suspended_state suspend_state;
560 bool scanning_paused;
561 bool suspended;
562 u8 wake_reason;
563 bdaddr_t wake_addr;
564 u8 wake_addr_type;
565
566 struct hci_conn_hash conn_hash;
567
568 struct list_head mesh_pending;
569 struct list_head mgmt_pending;
570 struct list_head reject_list;
571 struct list_head accept_list;
572 struct list_head uuids;
573 struct list_head link_keys;
574 struct list_head long_term_keys;
575 struct list_head identity_resolving_keys;
576 struct list_head remote_oob_data;
577 struct list_head le_accept_list;
578 struct list_head le_resolv_list;
579 struct list_head le_conn_params;
580 struct list_head pend_le_conns;
581 struct list_head pend_le_reports;
582 struct list_head blocked_keys;
583 struct list_head local_codecs;
584
585 struct hci_dev_stats stat;
586
587 atomic_t promisc;
588
589 const char *hw_info;
590 const char *fw_info;
591 struct dentry *debugfs;
592
593 struct device dev;
594
595 struct rfkill *rfkill;
596
597 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
598 hci_conn_flags_t conn_flags;
599
600 __s8 adv_tx_power;
601 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
602 __u8 adv_data_len;
603 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
604 __u8 scan_rsp_data_len;
605 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
606 __u8 per_adv_data_len;
607
608 struct list_head adv_instances;
609 unsigned int adv_instance_cnt;
610 __u8 cur_adv_instance;
611 __u16 adv_instance_timeout;
612 struct delayed_work adv_instance_expire;
613
614 struct idr adv_monitors_idr;
615 unsigned int adv_monitors_cnt;
616
617 __u8 irk[16];
618 __u32 rpa_timeout;
619 struct delayed_work rpa_expired;
620 bdaddr_t rpa;
621
622 struct delayed_work mesh_send_done;
623
624 enum {
625 INTERLEAVE_SCAN_NONE,
626 INTERLEAVE_SCAN_NO_FILTER,
627 INTERLEAVE_SCAN_ALLOWLIST
628 } interleave_scan_state;
629
630 struct delayed_work interleave_scan;
631
632 struct list_head monitored_devices;
633 bool advmon_pend_notify;
634
635#if IS_ENABLED(CONFIG_BT_LEDS)
636 struct led_trigger *power_led;
637#endif
638
639#if IS_ENABLED(CONFIG_BT_MSFTEXT)
640 __u16 msft_opcode;
641 void *msft_data;
642 bool msft_curve_validity;
643#endif
644
645#if IS_ENABLED(CONFIG_BT_AOSPEXT)
646 bool aosp_capable;
647 bool aosp_quality_report;
648#endif
649
650 int (*open)(struct hci_dev *hdev);
651 int (*close)(struct hci_dev *hdev);
652 int (*flush)(struct hci_dev *hdev);
653 int (*setup)(struct hci_dev *hdev);
654 int (*shutdown)(struct hci_dev *hdev);
655 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
656 void (*notify)(struct hci_dev *hdev, unsigned int evt);
657 void (*hw_error)(struct hci_dev *hdev, u8 code);
658 int (*post_init)(struct hci_dev *hdev);
659 int (*set_diag)(struct hci_dev *hdev, bool enable);
660 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
661 void (*cmd_timeout)(struct hci_dev *hdev);
662 void (*reset)(struct hci_dev *hdev);
663 bool (*wakeup)(struct hci_dev *hdev);
664 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
665 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
666 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
667 struct bt_codec *codec, __u8 *vnd_len,
668 __u8 **vnd_data);
669};
670
671#define HCI_PHY_HANDLE(handle) (handle & 0xff)
672
673enum conn_reasons {
674 CONN_REASON_PAIR_DEVICE,
675 CONN_REASON_L2CAP_CHAN,
676 CONN_REASON_SCO_CONNECT,
677 CONN_REASON_ISO_CONNECT,
678};
679
680struct hci_conn {
681 struct list_head list;
682
683 atomic_t refcnt;
684
685 bdaddr_t dst;
686 __u8 dst_type;
687 bdaddr_t src;
688 __u8 src_type;
689 bdaddr_t init_addr;
690 __u8 init_addr_type;
691 bdaddr_t resp_addr;
692 __u8 resp_addr_type;
693 __u8 adv_instance;
694 __u16 handle;
695 __u16 sync_handle;
696 __u16 state;
697 __u8 mode;
698 __u8 type;
699 __u8 role;
700 bool out;
701 __u8 attempt;
702 __u8 dev_class[3];
703 __u8 features[HCI_MAX_PAGES][8];
704 __u16 pkt_type;
705 __u16 link_policy;
706 __u8 key_type;
707 __u8 auth_type;
708 __u8 sec_level;
709 __u8 pending_sec_level;
710 __u8 pin_length;
711 __u8 enc_key_size;
712 __u8 io_capability;
713 __u32 passkey_notify;
714 __u8 passkey_entered;
715 __u16 disc_timeout;
716 __u16 conn_timeout;
717 __u16 setting;
718 __u16 auth_payload_timeout;
719 __u16 le_conn_min_interval;
720 __u16 le_conn_max_interval;
721 __u16 le_conn_interval;
722 __u16 le_conn_latency;
723 __u16 le_supv_timeout;
724 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
725 __u8 le_adv_data_len;
726 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
727 __u8 le_per_adv_data_len;
728 __u8 le_tx_phy;
729 __u8 le_rx_phy;
730 __s8 rssi;
731 __s8 tx_power;
732 __s8 max_tx_power;
733 struct bt_iso_qos iso_qos;
734 unsigned long flags;
735
736 enum conn_reasons conn_reason;
737
738 __u32 clock;
739 __u16 clock_accuracy;
740
741 unsigned long conn_info_timestamp;
742
743 __u8 remote_cap;
744 __u8 remote_auth;
745 __u8 remote_id;
746
747 unsigned int sent;
748
749 struct sk_buff_head data_q;
750 struct list_head chan_list;
751
752 struct delayed_work disc_work;
753 struct delayed_work auto_accept_work;
754 struct delayed_work idle_work;
755 struct delayed_work le_conn_timeout;
756 struct work_struct le_scan_cleanup;
757
758 struct device dev;
759 struct dentry *debugfs;
760
761 struct hci_dev *hdev;
762 void *l2cap_data;
763 void *sco_data;
764 void *iso_data;
765 struct amp_mgr *amp_mgr;
766
767 struct hci_conn *link;
768 struct bt_codec codec;
769
770 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
771 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
772 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
773
774 void (*cleanup)(struct hci_conn *conn);
775};
776
777struct hci_chan {
778 struct list_head list;
779 __u16 handle;
780 struct hci_conn *conn;
781 struct sk_buff_head data_q;
782 unsigned int sent;
783 __u8 state;
784 bool amp;
785};
786
787struct hci_conn_params {
788 struct list_head list;
789 struct list_head action;
790
791 bdaddr_t addr;
792 u8 addr_type;
793
794 u16 conn_min_interval;
795 u16 conn_max_interval;
796 u16 conn_latency;
797 u16 supervision_timeout;
798
799 enum {
800 HCI_AUTO_CONN_DISABLED,
801 HCI_AUTO_CONN_REPORT,
802 HCI_AUTO_CONN_DIRECT,
803 HCI_AUTO_CONN_ALWAYS,
804 HCI_AUTO_CONN_LINK_LOSS,
805 HCI_AUTO_CONN_EXPLICIT,
806 } auto_connect;
807
808 struct hci_conn *conn;
809 bool explicit_connect;
810 hci_conn_flags_t flags;
811 u8 privacy_mode;
812};
813
814extern struct list_head hci_dev_list;
815extern struct list_head hci_cb_list;
816extern rwlock_t hci_dev_list_lock;
817extern struct mutex hci_cb_list_lock;
818
819#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
820#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
821#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
822#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
823#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
824#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
825#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
826
827#define hci_dev_clear_volatile_flags(hdev) \
828 do { \
829 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
830 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
831 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
832 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
833 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
834 } while (0)
835
836#define hci_dev_le_state_simultaneous(hdev) \
837 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
838 (hdev->le_states[4] & 0x08) && /* Central */ \
839 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
840 (hdev->le_states[3] & 0x10)) /* Simultaneous */
841
842/* ----- HCI interface to upper protocols ----- */
843int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
844int l2cap_disconn_ind(struct hci_conn *hcon);
845void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
846
847#if IS_ENABLED(CONFIG_BT_BREDR)
848int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
849void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
850#else
851static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
852 __u8 *flags)
853{
854 return 0;
855}
856
857static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
858{
859}
860#endif
861
862#if IS_ENABLED(CONFIG_BT_LE)
863int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
864void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
865#else
866static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
867 __u8 *flags)
868{
869 return 0;
870}
871static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
872 u16 flags)
873{
874}
875#endif
876
877/* ----- Inquiry cache ----- */
878#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
879#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
880
881static inline void discovery_init(struct hci_dev *hdev)
882{
883 hdev->discovery.state = DISCOVERY_STOPPED;
884 INIT_LIST_HEAD(&hdev->discovery.all);
885 INIT_LIST_HEAD(&hdev->discovery.unknown);
886 INIT_LIST_HEAD(&hdev->discovery.resolve);
887 hdev->discovery.report_invalid_rssi = true;
888 hdev->discovery.rssi = HCI_RSSI_INVALID;
889}
890
891static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
892{
893 hdev->discovery.result_filtering = false;
894 hdev->discovery.report_invalid_rssi = true;
895 hdev->discovery.rssi = HCI_RSSI_INVALID;
896 hdev->discovery.uuid_count = 0;
897 kfree(hdev->discovery.uuids);
898 hdev->discovery.uuids = NULL;
899 hdev->discovery.scan_start = 0;
900 hdev->discovery.scan_duration = 0;
901}
902
903bool hci_discovery_active(struct hci_dev *hdev);
904
905void hci_discovery_set_state(struct hci_dev *hdev, int state);
906
907static inline int inquiry_cache_empty(struct hci_dev *hdev)
908{
909 return list_empty(&hdev->discovery.all);
910}
911
912static inline long inquiry_cache_age(struct hci_dev *hdev)
913{
914 struct discovery_state *c = &hdev->discovery;
915 return jiffies - c->timestamp;
916}
917
918static inline long inquiry_entry_age(struct inquiry_entry *e)
919{
920 return jiffies - e->timestamp;
921}
922
923struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
924 bdaddr_t *bdaddr);
925struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
926 bdaddr_t *bdaddr);
927struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
928 bdaddr_t *bdaddr,
929 int state);
930void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
931 struct inquiry_entry *ie);
932u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
933 bool name_known);
934void hci_inquiry_cache_flush(struct hci_dev *hdev);
935
936/* ----- HCI Connections ----- */
937enum {
938 HCI_CONN_AUTH_PEND,
939 HCI_CONN_REAUTH_PEND,
940 HCI_CONN_ENCRYPT_PEND,
941 HCI_CONN_RSWITCH_PEND,
942 HCI_CONN_MODE_CHANGE_PEND,
943 HCI_CONN_SCO_SETUP_PEND,
944 HCI_CONN_MGMT_CONNECTED,
945 HCI_CONN_SSP_ENABLED,
946 HCI_CONN_SC_ENABLED,
947 HCI_CONN_AES_CCM,
948 HCI_CONN_POWER_SAVE,
949 HCI_CONN_FLUSH_KEY,
950 HCI_CONN_ENCRYPT,
951 HCI_CONN_AUTH,
952 HCI_CONN_SECURE,
953 HCI_CONN_FIPS,
954 HCI_CONN_STK_ENCRYPT,
955 HCI_CONN_AUTH_INITIATOR,
956 HCI_CONN_DROP,
957 HCI_CONN_PARAM_REMOVAL_PEND,
958 HCI_CONN_NEW_LINK_KEY,
959 HCI_CONN_SCANNING,
960 HCI_CONN_AUTH_FAILURE,
961 HCI_CONN_PER_ADV,
962};
963
964static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
965{
966 struct hci_dev *hdev = conn->hdev;
967 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
968 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
969}
970
971static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
972{
973 struct hci_dev *hdev = conn->hdev;
974 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
975 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
976}
977
978static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
979{
980 struct hci_conn_hash *h = &hdev->conn_hash;
981 list_add_rcu(&c->list, &h->list);
982 switch (c->type) {
983 case ACL_LINK:
984 h->acl_num++;
985 break;
986 case AMP_LINK:
987 h->amp_num++;
988 break;
989 case LE_LINK:
990 h->le_num++;
991 if (c->role == HCI_ROLE_SLAVE)
992 h->le_num_peripheral++;
993 break;
994 case SCO_LINK:
995 case ESCO_LINK:
996 h->sco_num++;
997 break;
998 case ISO_LINK:
999 h->iso_num++;
1000 break;
1001 }
1002}
1003
1004static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1005{
1006 struct hci_conn_hash *h = &hdev->conn_hash;
1007
1008 list_del_rcu(&c->list);
1009 synchronize_rcu();
1010
1011 switch (c->type) {
1012 case ACL_LINK:
1013 h->acl_num--;
1014 break;
1015 case AMP_LINK:
1016 h->amp_num--;
1017 break;
1018 case LE_LINK:
1019 h->le_num--;
1020 if (c->role == HCI_ROLE_SLAVE)
1021 h->le_num_peripheral--;
1022 break;
1023 case SCO_LINK:
1024 case ESCO_LINK:
1025 h->sco_num--;
1026 break;
1027 case ISO_LINK:
1028 h->iso_num--;
1029 break;
1030 }
1031}
1032
1033static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1034{
1035 struct hci_conn_hash *h = &hdev->conn_hash;
1036 switch (type) {
1037 case ACL_LINK:
1038 return h->acl_num;
1039 case AMP_LINK:
1040 return h->amp_num;
1041 case LE_LINK:
1042 return h->le_num;
1043 case SCO_LINK:
1044 case ESCO_LINK:
1045 return h->sco_num;
1046 case ISO_LINK:
1047 return h->iso_num;
1048 default:
1049 return 0;
1050 }
1051}
1052
1053static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1054{
1055 struct hci_conn_hash *c = &hdev->conn_hash;
1056
1057 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1058}
1059
1060static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1061{
1062 struct hci_conn_hash *h = &hdev->conn_hash;
1063 struct hci_conn *c;
1064 __u8 type = INVALID_LINK;
1065
1066 rcu_read_lock();
1067
1068 list_for_each_entry_rcu(c, &h->list, list) {
1069 if (c->handle == handle) {
1070 type = c->type;
1071 break;
1072 }
1073 }
1074
1075 rcu_read_unlock();
1076
1077 return type;
1078}
1079
1080static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1081 bdaddr_t *ba,
1082 __u8 big, __u8 bis)
1083{
1084 struct hci_conn_hash *h = &hdev->conn_hash;
1085 struct hci_conn *c;
1086
1087 rcu_read_lock();
1088
1089 list_for_each_entry_rcu(c, &h->list, list) {
1090 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1091 continue;
1092
1093 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1094 rcu_read_unlock();
1095 return c;
1096 }
1097 }
1098 rcu_read_unlock();
1099
1100 return NULL;
1101}
1102
1103static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1104 __u16 handle)
1105{
1106 struct hci_conn_hash *h = &hdev->conn_hash;
1107 struct hci_conn *c;
1108
1109 rcu_read_lock();
1110
1111 list_for_each_entry_rcu(c, &h->list, list) {
1112 if (c->handle == handle) {
1113 rcu_read_unlock();
1114 return c;
1115 }
1116 }
1117 rcu_read_unlock();
1118
1119 return NULL;
1120}
1121
1122static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1123 __u8 type, bdaddr_t *ba)
1124{
1125 struct hci_conn_hash *h = &hdev->conn_hash;
1126 struct hci_conn *c;
1127
1128 rcu_read_lock();
1129
1130 list_for_each_entry_rcu(c, &h->list, list) {
1131 if (c->type == type && !bacmp(&c->dst, ba)) {
1132 rcu_read_unlock();
1133 return c;
1134 }
1135 }
1136
1137 rcu_read_unlock();
1138
1139 return NULL;
1140}
1141
1142static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1143 bdaddr_t *ba,
1144 __u8 ba_type)
1145{
1146 struct hci_conn_hash *h = &hdev->conn_hash;
1147 struct hci_conn *c;
1148
1149 rcu_read_lock();
1150
1151 list_for_each_entry_rcu(c, &h->list, list) {
1152 if (c->type != LE_LINK)
1153 continue;
1154
1155 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1156 rcu_read_unlock();
1157 return c;
1158 }
1159 }
1160
1161 rcu_read_unlock();
1162
1163 return NULL;
1164}
1165
1166static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1167 bdaddr_t *ba,
1168 __u8 ba_type)
1169{
1170 struct hci_conn_hash *h = &hdev->conn_hash;
1171 struct hci_conn *c;
1172
1173 rcu_read_lock();
1174
1175 list_for_each_entry_rcu(c, &h->list, list) {
1176 if (c->type != ISO_LINK)
1177 continue;
1178
1179 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1180 rcu_read_unlock();
1181 return c;
1182 }
1183 }
1184
1185 rcu_read_unlock();
1186
1187 return NULL;
1188}
1189
1190static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1191 __u8 handle)
1192{
1193 struct hci_conn_hash *h = &hdev->conn_hash;
1194 struct hci_conn *c;
1195
1196 rcu_read_lock();
1197
1198 list_for_each_entry_rcu(c, &h->list, list) {
1199 if (c->type != ISO_LINK)
1200 continue;
1201
1202 if (handle == c->iso_qos.cig) {
1203 rcu_read_unlock();
1204 return c;
1205 }
1206 }
1207
1208 rcu_read_unlock();
1209
1210 return NULL;
1211}
1212
1213static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1214 __u8 handle)
1215{
1216 struct hci_conn_hash *h = &hdev->conn_hash;
1217 struct hci_conn *c;
1218
1219 rcu_read_lock();
1220
1221 list_for_each_entry_rcu(c, &h->list, list) {
1222 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1223 continue;
1224
1225 if (handle == c->iso_qos.big) {
1226 rcu_read_unlock();
1227 return c;
1228 }
1229 }
1230
1231 rcu_read_unlock();
1232
1233 return NULL;
1234}
1235
1236static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1237 __u8 type, __u16 state)
1238{
1239 struct hci_conn_hash *h = &hdev->conn_hash;
1240 struct hci_conn *c;
1241
1242 rcu_read_lock();
1243
1244 list_for_each_entry_rcu(c, &h->list, list) {
1245 if (c->type == type && c->state == state) {
1246 rcu_read_unlock();
1247 return c;
1248 }
1249 }
1250
1251 rcu_read_unlock();
1252
1253 return NULL;
1254}
1255
1256typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1257static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1258 hci_conn_func_t func, __u8 type,
1259 __u16 state, void *data)
1260{
1261 struct hci_conn_hash *h = &hdev->conn_hash;
1262 struct hci_conn *c;
1263
1264 if (!func)
1265 return;
1266
1267 rcu_read_lock();
1268
1269 list_for_each_entry_rcu(c, &h->list, list) {
1270 if (c->type == type && c->state == state)
1271 func(c, data);
1272 }
1273
1274 rcu_read_unlock();
1275}
1276
1277static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1278{
1279 struct hci_conn_hash *h = &hdev->conn_hash;
1280 struct hci_conn *c;
1281
1282 rcu_read_lock();
1283
1284 list_for_each_entry_rcu(c, &h->list, list) {
1285 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1286 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1287 rcu_read_unlock();
1288 return c;
1289 }
1290 }
1291
1292 rcu_read_unlock();
1293
1294 return NULL;
1295}
1296
1297int hci_disconnect(struct hci_conn *conn, __u8 reason);
1298bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1299void hci_sco_setup(struct hci_conn *conn, __u8 status);
1300bool hci_iso_setup_path(struct hci_conn *conn);
1301int hci_le_create_cis(struct hci_conn *conn);
1302
1303struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1304 u8 role);
1305int hci_conn_del(struct hci_conn *conn);
1306void hci_conn_hash_flush(struct hci_dev *hdev);
1307void hci_conn_check_pending(struct hci_dev *hdev);
1308
1309struct hci_chan *hci_chan_create(struct hci_conn *conn);
1310void hci_chan_del(struct hci_chan *chan);
1311void hci_chan_list_flush(struct hci_conn *conn);
1312struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1313
1314struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1315 u8 dst_type, u8 sec_level,
1316 u16 conn_timeout,
1317 enum conn_reasons conn_reason);
1318struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1319 u8 dst_type, bool dst_resolved, u8 sec_level,
1320 u16 conn_timeout, u8 role);
1321struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1322 u8 sec_level, u8 auth_type,
1323 enum conn_reasons conn_reason);
1324struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1325 __u16 setting, struct bt_codec *codec);
1326struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1327 __u8 dst_type, struct bt_iso_qos *qos);
1328struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1329 __u8 dst_type, struct bt_iso_qos *qos);
1330struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1331 __u8 dst_type, struct bt_iso_qos *qos,
1332 __u8 data_len, __u8 *data);
1333int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1334 __u8 sid);
1335int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1336 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1337int hci_conn_check_link_mode(struct hci_conn *conn);
1338int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1339int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1340 bool initiator);
1341int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1342
1343void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1344
1345void hci_conn_failed(struct hci_conn *conn, u8 status);
1346
1347/*
1348 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1349 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1350 * working or anything else. They just guarantee that the object is available
1351 * and can be dereferenced. So you can use its locks, local variables and any
1352 * other constant data.
1353 * Before accessing runtime data, you _must_ lock the object and then check that
1354 * it is still running. As soon as you release the locks, the connection might
1355 * get dropped, though.
1356 *
1357 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1358 * how long the underlying connection is held. So every channel that runs on the
1359 * hci_conn object calls this to prevent the connection from disappearing. As
1360 * long as you hold a device, you must also guarantee that you have a valid
1361 * reference to the device via hci_conn_get() (or the initial reference from
1362 * hci_conn_add()).
1363 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1364 * break because nobody cares for that. But this means, we cannot use
1365 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1366 */
1367
1368static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1369{
1370 get_device(&conn->dev);
1371 return conn;
1372}
1373
1374static inline void hci_conn_put(struct hci_conn *conn)
1375{
1376 put_device(&conn->dev);
1377}
1378
1379static inline void hci_conn_hold(struct hci_conn *conn)
1380{
1381 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1382
1383 atomic_inc(&conn->refcnt);
1384 cancel_delayed_work(&conn->disc_work);
1385}
1386
1387static inline void hci_conn_drop(struct hci_conn *conn)
1388{
1389 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1390
1391 if (atomic_dec_and_test(&conn->refcnt)) {
1392 unsigned long timeo;
1393
1394 switch (conn->type) {
1395 case ACL_LINK:
1396 case LE_LINK:
1397 cancel_delayed_work(&conn->idle_work);
1398 if (conn->state == BT_CONNECTED) {
1399 timeo = conn->disc_timeout;
1400 if (!conn->out)
1401 timeo *= 2;
1402 } else {
1403 timeo = 0;
1404 }
1405 break;
1406
1407 case AMP_LINK:
1408 timeo = conn->disc_timeout;
1409 break;
1410
1411 default:
1412 timeo = 0;
1413 break;
1414 }
1415
1416 cancel_delayed_work(&conn->disc_work);
1417 queue_delayed_work(conn->hdev->workqueue,
1418 &conn->disc_work, timeo);
1419 }
1420}
1421
1422/* ----- HCI Devices ----- */
1423static inline void hci_dev_put(struct hci_dev *d)
1424{
1425 BT_DBG("%s orig refcnt %d", d->name,
1426 kref_read(&d->dev.kobj.kref));
1427
1428 put_device(&d->dev);
1429}
1430
1431static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1432{
1433 BT_DBG("%s orig refcnt %d", d->name,
1434 kref_read(&d->dev.kobj.kref));
1435
1436 get_device(&d->dev);
1437 return d;
1438}
1439
1440#define hci_dev_lock(d) mutex_lock(&d->lock)
1441#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1442
1443#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1444#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1445
1446static inline void *hci_get_drvdata(struct hci_dev *hdev)
1447{
1448 return dev_get_drvdata(&hdev->dev);
1449}
1450
1451static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1452{
1453 dev_set_drvdata(&hdev->dev, data);
1454}
1455
1456static inline void *hci_get_priv(struct hci_dev *hdev)
1457{
1458 return (char *)hdev + sizeof(*hdev);
1459}
1460
1461struct hci_dev *hci_dev_get(int index);
1462struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1463
1464struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1465
1466static inline struct hci_dev *hci_alloc_dev(void)
1467{
1468 return hci_alloc_dev_priv(0);
1469}
1470
1471void hci_free_dev(struct hci_dev *hdev);
1472int hci_register_dev(struct hci_dev *hdev);
1473void hci_unregister_dev(struct hci_dev *hdev);
1474void hci_release_dev(struct hci_dev *hdev);
1475int hci_register_suspend_notifier(struct hci_dev *hdev);
1476int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1477int hci_suspend_dev(struct hci_dev *hdev);
1478int hci_resume_dev(struct hci_dev *hdev);
1479int hci_reset_dev(struct hci_dev *hdev);
1480int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1481int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1482__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1483__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1484
1485static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1486{
1487#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1488 hdev->msft_opcode = opcode;
1489#endif
1490}
1491
1492static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1493{
1494#if IS_ENABLED(CONFIG_BT_AOSPEXT)
1495 hdev->aosp_capable = true;
1496#endif
1497}
1498
1499int hci_dev_open(__u16 dev);
1500int hci_dev_close(__u16 dev);
1501int hci_dev_do_close(struct hci_dev *hdev);
1502int hci_dev_reset(__u16 dev);
1503int hci_dev_reset_stat(__u16 dev);
1504int hci_dev_cmd(unsigned int cmd, void __user *arg);
1505int hci_get_dev_list(void __user *arg);
1506int hci_get_dev_info(void __user *arg);
1507int hci_get_conn_list(void __user *arg);
1508int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1509int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1510int hci_inquiry(void __user *arg);
1511
1512struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1513 bdaddr_t *bdaddr, u8 type);
1514struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1515 struct list_head *list, bdaddr_t *bdaddr,
1516 u8 type);
1517struct bdaddr_list_with_flags *
1518hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1519 u8 type);
1520int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1521int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1522 u8 type, u8 *peer_irk, u8 *local_irk);
1523int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1524 u8 type, u32 flags);
1525int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1526int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1527 u8 type);
1528int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1529 u8 type);
1530void hci_bdaddr_list_clear(struct list_head *list);
1531
1532struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1533 bdaddr_t *addr, u8 addr_type);
1534struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1535 bdaddr_t *addr, u8 addr_type);
1536void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1537void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1538
1539struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1540 bdaddr_t *addr,
1541 u8 addr_type);
1542
1543void hci_uuids_clear(struct hci_dev *hdev);
1544
1545void hci_link_keys_clear(struct hci_dev *hdev);
1546struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1547struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1548 bdaddr_t *bdaddr, u8 *val, u8 type,
1549 u8 pin_len, bool *persistent);
1550struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1551 u8 addr_type, u8 type, u8 authenticated,
1552 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1553struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 addr_type, u8 role);
1555int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1556void hci_smp_ltks_clear(struct hci_dev *hdev);
1557int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1558
1559struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1560struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1561 u8 addr_type);
1562struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1563 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1564void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1565bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1566void hci_blocked_keys_clear(struct hci_dev *hdev);
1567void hci_smp_irks_clear(struct hci_dev *hdev);
1568
1569bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1570
1571void hci_remote_oob_data_clear(struct hci_dev *hdev);
1572struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1573 bdaddr_t *bdaddr, u8 bdaddr_type);
1574int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1575 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1576 u8 *hash256, u8 *rand256);
1577int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1578 u8 bdaddr_type);
1579
1580void hci_adv_instances_clear(struct hci_dev *hdev);
1581struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1582struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1583struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1584 u32 flags, u16 adv_data_len, u8 *adv_data,
1585 u16 scan_rsp_len, u8 *scan_rsp_data,
1586 u16 timeout, u16 duration, s8 tx_power,
1587 u32 min_interval, u32 max_interval,
1588 u8 mesh_handle);
1589struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1590 u32 flags, u8 data_len, u8 *data,
1591 u32 min_interval, u32 max_interval);
1592int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1593 u16 adv_data_len, u8 *adv_data,
1594 u16 scan_rsp_len, u8 *scan_rsp_data);
1595int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1596void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1597u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1598bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1599
1600void hci_adv_monitors_clear(struct hci_dev *hdev);
1601void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1602int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1603int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1604int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1605bool hci_is_adv_monitoring(struct hci_dev *hdev);
1606int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1607
1608void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1609
1610void hci_init_sysfs(struct hci_dev *hdev);
1611void hci_conn_init_sysfs(struct hci_conn *conn);
1612void hci_conn_add_sysfs(struct hci_conn *conn);
1613void hci_conn_del_sysfs(struct hci_conn *conn);
1614
1615#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1616
1617/* ----- LMP capabilities ----- */
1618#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1619#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1620#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1621#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1622#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1623#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1624#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1625#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1626#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1627#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1628#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1629#define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1630#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1631#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1632#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1633#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1634#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1635#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1636#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1637#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1638#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1639#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1640#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1641#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1642
1643/* ----- Extended LMP capabilities ----- */
1644#define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1645#define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1646#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1647#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1648#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1649#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1650
1651/* ----- Host capabilities ----- */
1652#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1653#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1654#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1655#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1656
1657#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1658 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1659#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1660 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1661#define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1662 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1663#define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1664 !adv->rpa_expired)
1665
1666#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1667 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1668
1669#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1670 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1671
1672#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1673 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1674
1675#define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1676
1677/* Use LL Privacy based address resolution if supported */
1678#define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1679 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1680
1681#define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1682 (hdev->commands[39] & 0x04))
1683
1684/* Use enhanced synchronous connection if command is supported and its quirk
1685 * has not been set.
1686 */
1687#define enhanced_sync_conn_capable(dev) \
1688 (((dev)->commands[29] & 0x08) && \
1689 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1690
1691/* Use ext scanning if set ext scan param and ext scan enable is supported */
1692#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1693 ((dev)->commands[37] & 0x40) && \
1694 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1695
1696/* Use ext create connection if command is supported */
1697#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1698
1699/* Extended advertising support */
1700#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1701
1702/* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1703 *
1704 * C24: Mandatory if the LE Controller supports Connection State and either
1705 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1706 */
1707#define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1708 ext_adv_capable(dev))
1709
1710/* Periodic advertising support */
1711#define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1712
1713/* CIS Master/Slave and BIS support */
1714#define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1715#define cis_capable(dev) \
1716 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1717#define cis_central_capable(dev) \
1718 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1719#define cis_peripheral_capable(dev) \
1720 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1721#define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1722
1723#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1724 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1725
1726/* ----- HCI protocols ----- */
1727#define HCI_PROTO_DEFER 0x01
1728
1729static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1730 __u8 type, __u8 *flags)
1731{
1732 switch (type) {
1733 case ACL_LINK:
1734 return l2cap_connect_ind(hdev, bdaddr);
1735
1736 case SCO_LINK:
1737 case ESCO_LINK:
1738 return sco_connect_ind(hdev, bdaddr, flags);
1739
1740 case ISO_LINK:
1741 return iso_connect_ind(hdev, bdaddr, flags);
1742
1743 default:
1744 BT_ERR("unknown link type %d", type);
1745 return -EINVAL;
1746 }
1747}
1748
1749static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1750{
1751 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1752 return HCI_ERROR_REMOTE_USER_TERM;
1753
1754 return l2cap_disconn_ind(conn);
1755}
1756
1757/* ----- HCI callbacks ----- */
1758struct hci_cb {
1759 struct list_head list;
1760
1761 char *name;
1762
1763 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1764 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1765 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1766 __u8 encrypt);
1767 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1768 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1769};
1770
1771static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1772{
1773 struct hci_cb *cb;
1774
1775 mutex_lock(&hci_cb_list_lock);
1776 list_for_each_entry(cb, &hci_cb_list, list) {
1777 if (cb->connect_cfm)
1778 cb->connect_cfm(conn, status);
1779 }
1780 mutex_unlock(&hci_cb_list_lock);
1781
1782 if (conn->connect_cfm_cb)
1783 conn->connect_cfm_cb(conn, status);
1784}
1785
1786static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1787{
1788 struct hci_cb *cb;
1789
1790 mutex_lock(&hci_cb_list_lock);
1791 list_for_each_entry(cb, &hci_cb_list, list) {
1792 if (cb->disconn_cfm)
1793 cb->disconn_cfm(conn, reason);
1794 }
1795 mutex_unlock(&hci_cb_list_lock);
1796
1797 if (conn->disconn_cfm_cb)
1798 conn->disconn_cfm_cb(conn, reason);
1799}
1800
1801static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1802{
1803 struct hci_cb *cb;
1804 __u8 encrypt;
1805
1806 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1807 return;
1808
1809 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1810
1811 mutex_lock(&hci_cb_list_lock);
1812 list_for_each_entry(cb, &hci_cb_list, list) {
1813 if (cb->security_cfm)
1814 cb->security_cfm(conn, status, encrypt);
1815 }
1816 mutex_unlock(&hci_cb_list_lock);
1817
1818 if (conn->security_cfm_cb)
1819 conn->security_cfm_cb(conn, status);
1820}
1821
1822static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1823{
1824 struct hci_cb *cb;
1825 __u8 encrypt;
1826
1827 if (conn->state == BT_CONFIG) {
1828 if (!status)
1829 conn->state = BT_CONNECTED;
1830
1831 hci_connect_cfm(conn, status);
1832 hci_conn_drop(conn);
1833 return;
1834 }
1835
1836 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1837 encrypt = 0x00;
1838 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1839 encrypt = 0x02;
1840 else
1841 encrypt = 0x01;
1842
1843 if (!status) {
1844 if (conn->sec_level == BT_SECURITY_SDP)
1845 conn->sec_level = BT_SECURITY_LOW;
1846
1847 if (conn->pending_sec_level > conn->sec_level)
1848 conn->sec_level = conn->pending_sec_level;
1849 }
1850
1851 mutex_lock(&hci_cb_list_lock);
1852 list_for_each_entry(cb, &hci_cb_list, list) {
1853 if (cb->security_cfm)
1854 cb->security_cfm(conn, status, encrypt);
1855 }
1856 mutex_unlock(&hci_cb_list_lock);
1857
1858 if (conn->security_cfm_cb)
1859 conn->security_cfm_cb(conn, status);
1860}
1861
1862static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1863{
1864 struct hci_cb *cb;
1865
1866 mutex_lock(&hci_cb_list_lock);
1867 list_for_each_entry(cb, &hci_cb_list, list) {
1868 if (cb->key_change_cfm)
1869 cb->key_change_cfm(conn, status);
1870 }
1871 mutex_unlock(&hci_cb_list_lock);
1872}
1873
1874static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1875 __u8 role)
1876{
1877 struct hci_cb *cb;
1878
1879 mutex_lock(&hci_cb_list_lock);
1880 list_for_each_entry(cb, &hci_cb_list, list) {
1881 if (cb->role_switch_cfm)
1882 cb->role_switch_cfm(conn, status, role);
1883 }
1884 mutex_unlock(&hci_cb_list_lock);
1885}
1886
1887static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1888{
1889 if (addr_type != ADDR_LE_DEV_RANDOM)
1890 return false;
1891
1892 if ((bdaddr->b[5] & 0xc0) == 0x40)
1893 return true;
1894
1895 return false;
1896}
1897
1898static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1899{
1900 if (addr_type == ADDR_LE_DEV_PUBLIC)
1901 return true;
1902
1903 /* Check for Random Static address type */
1904 if ((addr->b[5] & 0xc0) == 0xc0)
1905 return true;
1906
1907 return false;
1908}
1909
1910static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1911 bdaddr_t *bdaddr, u8 addr_type)
1912{
1913 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1914 return NULL;
1915
1916 return hci_find_irk_by_rpa(hdev, bdaddr);
1917}
1918
1919static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1920 u16 to_multiplier)
1921{
1922 u16 max_latency;
1923
1924 if (min > max || min < 6 || max > 3200)
1925 return -EINVAL;
1926
1927 if (to_multiplier < 10 || to_multiplier > 3200)
1928 return -EINVAL;
1929
1930 if (max >= to_multiplier * 8)
1931 return -EINVAL;
1932
1933 max_latency = (to_multiplier * 4 / max) - 1;
1934 if (latency > 499 || latency > max_latency)
1935 return -EINVAL;
1936
1937 return 0;
1938}
1939
1940int hci_register_cb(struct hci_cb *hcb);
1941int hci_unregister_cb(struct hci_cb *hcb);
1942
1943int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1944 const void *param);
1945
1946int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1947 const void *param);
1948void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1949void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1950void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
1951
1952void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1953void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
1954
1955u32 hci_conn_get_phy(struct hci_conn *conn);
1956
1957/* ----- HCI Sockets ----- */
1958void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1959void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1960 int flag, struct sock *skip_sk);
1961void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1962void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1963 void *data, u16 data_len, ktime_t tstamp,
1964 int flag, struct sock *skip_sk);
1965
1966void hci_sock_dev_event(struct hci_dev *hdev, int event);
1967
1968#define HCI_MGMT_VAR_LEN BIT(0)
1969#define HCI_MGMT_NO_HDEV BIT(1)
1970#define HCI_MGMT_UNTRUSTED BIT(2)
1971#define HCI_MGMT_UNCONFIGURED BIT(3)
1972#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1973
1974struct hci_mgmt_handler {
1975 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1976 u16 data_len);
1977 size_t data_len;
1978 unsigned long flags;
1979};
1980
1981struct hci_mgmt_chan {
1982 struct list_head list;
1983 unsigned short channel;
1984 size_t handler_count;
1985 const struct hci_mgmt_handler *handlers;
1986 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1987};
1988
1989int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1990void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1991
1992/* Management interface */
1993#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1994#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1995 BIT(BDADDR_LE_RANDOM))
1996#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1997 BIT(BDADDR_LE_PUBLIC) | \
1998 BIT(BDADDR_LE_RANDOM))
1999
2000/* These LE scan and inquiry parameters were chosen according to LE General
2001 * Discovery Procedure specification.
2002 */
2003#define DISCOV_LE_SCAN_WIN 0x12
2004#define DISCOV_LE_SCAN_INT 0x12
2005#define DISCOV_LE_TIMEOUT 10240 /* msec */
2006#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2007#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2008#define DISCOV_BREDR_INQUIRY_LEN 0x08
2009#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2010#define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2011#define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2012#define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2013#define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2014#define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2015#define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2016#define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2017
2018#define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2019
2020void mgmt_fill_version_info(void *ver);
2021int mgmt_new_settings(struct hci_dev *hdev);
2022void mgmt_index_added(struct hci_dev *hdev);
2023void mgmt_index_removed(struct hci_dev *hdev);
2024void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2025void mgmt_power_on(struct hci_dev *hdev, int err);
2026void __mgmt_power_off(struct hci_dev *hdev);
2027void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2028 bool persistent);
2029void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2030 u8 *name, u8 name_len);
2031void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2032 u8 link_type, u8 addr_type, u8 reason,
2033 bool mgmt_connected);
2034void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2035 u8 link_type, u8 addr_type, u8 status);
2036void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2037 u8 addr_type, u8 status);
2038void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2039void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2040 u8 status);
2041void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2042 u8 status);
2043int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2044 u8 link_type, u8 addr_type, u32 value,
2045 u8 confirm_hint);
2046int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2047 u8 link_type, u8 addr_type, u8 status);
2048int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2049 u8 link_type, u8 addr_type, u8 status);
2050int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2051 u8 link_type, u8 addr_type);
2052int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2053 u8 link_type, u8 addr_type, u8 status);
2054int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2055 u8 link_type, u8 addr_type, u8 status);
2056int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2057 u8 link_type, u8 addr_type, u32 passkey,
2058 u8 entered);
2059void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2060void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2061void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2062 u8 status);
2063void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2064void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2065void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2066void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2067 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2068 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2069 u64 instant);
2070void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2071 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2072void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2073void mgmt_suspending(struct hci_dev *hdev, u8 state);
2074void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2075 u8 addr_type);
2076bool mgmt_powering_down(struct hci_dev *hdev);
2077void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2078void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2079void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2080 bool persistent);
2081void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2082 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2083 u16 max_interval, u16 latency, u16 timeout);
2084void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2085bool mgmt_get_connectable(struct hci_dev *hdev);
2086u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2087void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2088 u8 instance);
2089void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2090 u8 instance);
2091void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2092int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2093void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2094 bdaddr_t *bdaddr, u8 addr_type);
2095
2096int hci_abort_conn(struct hci_conn *conn, u8 reason);
2097u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2098 u16 to_multiplier);
2099void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2100 __u8 ltk[16], __u8 key_size);
2101
2102void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2103 u8 *bdaddr_type);
2104
2105#define SCO_AIRMODE_MASK 0x0003
2106#define SCO_AIRMODE_CVSD 0x0000
2107#define SCO_AIRMODE_TRANSP 0x0003
2108
2109#define LOCAL_CODEC_ACL_MASK BIT(0)
2110#define LOCAL_CODEC_SCO_MASK BIT(1)
2111
2112#define TRANSPORT_TYPE_MAX 0x04
2113
2114#endif /* __HCI_CORE_H */