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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/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 __u16 appearance;
215 __u8 dev_class[3];
216 __u8 major_class;
217 __u8 minor_class;
218 __u8 max_page;
219 __u8 features[HCI_MAX_PAGES][8];
220 __u8 le_features[8];
221 __u8 le_white_list_size;
222 __u8 le_states[8];
223 __u8 commands[64];
224 __u8 hci_ver;
225 __u16 hci_rev;
226 __u8 lmp_ver;
227 __u16 manufacturer;
228 __u16 lmp_subver;
229 __u16 voice_setting;
230 __u8 num_iac;
231 __u8 stored_max_keys;
232 __u8 stored_num_keys;
233 __u8 io_capability;
234 __s8 inq_tx_power;
235 __u16 page_scan_interval;
236 __u16 page_scan_window;
237 __u8 page_scan_type;
238 __u8 le_adv_channel_map;
239 __u16 le_adv_min_interval;
240 __u16 le_adv_max_interval;
241 __u8 le_scan_type;
242 __u16 le_scan_interval;
243 __u16 le_scan_window;
244 __u16 le_conn_min_interval;
245 __u16 le_conn_max_interval;
246 __u16 le_conn_latency;
247 __u16 le_supv_timeout;
248 __u16 le_def_tx_len;
249 __u16 le_def_tx_time;
250 __u16 le_max_tx_len;
251 __u16 le_max_tx_time;
252 __u16 le_max_rx_len;
253 __u16 le_max_rx_time;
254 __u16 discov_interleaved_timeout;
255 __u16 conn_info_min_age;
256 __u16 conn_info_max_age;
257 __u8 ssp_debug_mode;
258 __u8 hw_error_code;
259 __u32 clock;
260
261 __u16 devid_source;
262 __u16 devid_vendor;
263 __u16 devid_product;
264 __u16 devid_version;
265
266 __u16 pkt_type;
267 __u16 esco_type;
268 __u16 link_policy;
269 __u16 link_mode;
270
271 __u32 idle_timeout;
272 __u16 sniff_min_interval;
273 __u16 sniff_max_interval;
274
275 __u8 amp_status;
276 __u32 amp_total_bw;
277 __u32 amp_max_bw;
278 __u32 amp_min_latency;
279 __u32 amp_max_pdu;
280 __u8 amp_type;
281 __u16 amp_pal_cap;
282 __u16 amp_assoc_size;
283 __u32 amp_max_flush_to;
284 __u32 amp_be_flush_to;
285
286 struct amp_assoc loc_assoc;
287
288 __u8 flow_ctl_mode;
289
290 unsigned int auto_accept_delay;
291
292 unsigned long quirks;
293
294 atomic_t cmd_cnt;
295 unsigned int acl_cnt;
296 unsigned int sco_cnt;
297 unsigned int le_cnt;
298
299 unsigned int acl_mtu;
300 unsigned int sco_mtu;
301 unsigned int le_mtu;
302 unsigned int acl_pkts;
303 unsigned int sco_pkts;
304 unsigned int le_pkts;
305
306 __u16 block_len;
307 __u16 block_mtu;
308 __u16 num_blocks;
309 __u16 block_cnt;
310
311 unsigned long acl_last_tx;
312 unsigned long sco_last_tx;
313 unsigned long le_last_tx;
314
315 struct workqueue_struct *workqueue;
316 struct workqueue_struct *req_workqueue;
317
318 struct work_struct power_on;
319 struct delayed_work power_off;
320 struct work_struct error_reset;
321
322 __u16 discov_timeout;
323 struct delayed_work discov_off;
324
325 struct delayed_work service_cache;
326
327 struct delayed_work cmd_timer;
328
329 struct work_struct rx_work;
330 struct work_struct cmd_work;
331 struct work_struct tx_work;
332
333 struct work_struct discov_update;
334 struct work_struct bg_scan_update;
335 struct work_struct scan_update;
336 struct work_struct connectable_update;
337 struct work_struct discoverable_update;
338 struct delayed_work le_scan_disable;
339 struct delayed_work le_scan_restart;
340
341 struct sk_buff_head rx_q;
342 struct sk_buff_head raw_q;
343 struct sk_buff_head cmd_q;
344
345 struct sk_buff *sent_cmd;
346
347 struct mutex req_lock;
348 wait_queue_head_t req_wait_q;
349 __u32 req_status;
350 __u32 req_result;
351 struct sk_buff *req_skb;
352
353 void *smp_data;
354 void *smp_bredr_data;
355
356 struct discovery_state discovery;
357 struct hci_conn_hash conn_hash;
358
359 struct list_head mgmt_pending;
360 struct list_head blacklist;
361 struct list_head whitelist;
362 struct list_head uuids;
363 struct list_head link_keys;
364 struct list_head long_term_keys;
365 struct list_head identity_resolving_keys;
366 struct list_head remote_oob_data;
367 struct list_head le_white_list;
368 struct list_head le_conn_params;
369 struct list_head pend_le_conns;
370 struct list_head pend_le_reports;
371
372 struct hci_dev_stats stat;
373
374 atomic_t promisc;
375
376 const char *hw_info;
377 const char *fw_info;
378 struct dentry *debugfs;
379
380 struct device dev;
381
382 struct rfkill *rfkill;
383
384 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
385
386 __s8 adv_tx_power;
387 __u8 adv_data[HCI_MAX_AD_LENGTH];
388 __u8 adv_data_len;
389 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
390 __u8 scan_rsp_data_len;
391
392 struct list_head adv_instances;
393 unsigned int adv_instance_cnt;
394 __u8 cur_adv_instance;
395 __u16 adv_instance_timeout;
396 struct delayed_work adv_instance_expire;
397
398 __u8 irk[16];
399 __u32 rpa_timeout;
400 struct delayed_work rpa_expired;
401 bdaddr_t rpa;
402
403#if IS_ENABLED(CONFIG_BT_LEDS)
404 struct led_trigger *power_led;
405#endif
406
407 int (*open)(struct hci_dev *hdev);
408 int (*close)(struct hci_dev *hdev);
409 int (*flush)(struct hci_dev *hdev);
410 int (*setup)(struct hci_dev *hdev);
411 int (*shutdown)(struct hci_dev *hdev);
412 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
413 void (*notify)(struct hci_dev *hdev, unsigned int evt);
414 void (*hw_error)(struct hci_dev *hdev, u8 code);
415 int (*post_init)(struct hci_dev *hdev);
416 int (*set_diag)(struct hci_dev *hdev, bool enable);
417 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
418};
419
420#define HCI_PHY_HANDLE(handle) (handle & 0xff)
421
422struct hci_conn {
423 struct list_head list;
424
425 atomic_t refcnt;
426
427 bdaddr_t dst;
428 __u8 dst_type;
429 bdaddr_t src;
430 __u8 src_type;
431 bdaddr_t init_addr;
432 __u8 init_addr_type;
433 bdaddr_t resp_addr;
434 __u8 resp_addr_type;
435 __u16 handle;
436 __u16 state;
437 __u8 mode;
438 __u8 type;
439 __u8 role;
440 bool out;
441 __u8 attempt;
442 __u8 dev_class[3];
443 __u8 features[HCI_MAX_PAGES][8];
444 __u16 pkt_type;
445 __u16 link_policy;
446 __u8 key_type;
447 __u8 auth_type;
448 __u8 sec_level;
449 __u8 pending_sec_level;
450 __u8 pin_length;
451 __u8 enc_key_size;
452 __u8 io_capability;
453 __u32 passkey_notify;
454 __u8 passkey_entered;
455 __u16 disc_timeout;
456 __u16 conn_timeout;
457 __u16 setting;
458 __u16 le_conn_min_interval;
459 __u16 le_conn_max_interval;
460 __u16 le_conn_interval;
461 __u16 le_conn_latency;
462 __u16 le_supv_timeout;
463 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
464 __u8 le_adv_data_len;
465 __s8 rssi;
466 __s8 tx_power;
467 __s8 max_tx_power;
468 unsigned long flags;
469
470 __u32 clock;
471 __u16 clock_accuracy;
472
473 unsigned long conn_info_timestamp;
474
475 __u8 remote_cap;
476 __u8 remote_auth;
477 __u8 remote_id;
478
479 unsigned int sent;
480
481 struct sk_buff_head data_q;
482 struct list_head chan_list;
483
484 struct delayed_work disc_work;
485 struct delayed_work auto_accept_work;
486 struct delayed_work idle_work;
487 struct delayed_work le_conn_timeout;
488 struct work_struct le_scan_cleanup;
489
490 struct device dev;
491 struct dentry *debugfs;
492
493 struct hci_dev *hdev;
494 void *l2cap_data;
495 void *sco_data;
496 struct amp_mgr *amp_mgr;
497
498 struct hci_conn *link;
499
500 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
501 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
502 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
503};
504
505struct hci_chan {
506 struct list_head list;
507 __u16 handle;
508 struct hci_conn *conn;
509 struct sk_buff_head data_q;
510 unsigned int sent;
511 __u8 state;
512};
513
514struct hci_conn_params {
515 struct list_head list;
516 struct list_head action;
517
518 bdaddr_t addr;
519 u8 addr_type;
520
521 u16 conn_min_interval;
522 u16 conn_max_interval;
523 u16 conn_latency;
524 u16 supervision_timeout;
525
526 enum {
527 HCI_AUTO_CONN_DISABLED,
528 HCI_AUTO_CONN_REPORT,
529 HCI_AUTO_CONN_DIRECT,
530 HCI_AUTO_CONN_ALWAYS,
531 HCI_AUTO_CONN_LINK_LOSS,
532 HCI_AUTO_CONN_EXPLICIT,
533 } auto_connect;
534
535 struct hci_conn *conn;
536 bool explicit_connect;
537};
538
539extern struct list_head hci_dev_list;
540extern struct list_head hci_cb_list;
541extern rwlock_t hci_dev_list_lock;
542extern struct mutex hci_cb_list_lock;
543
544#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
545#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
546#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
547#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
548#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
549#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
550#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
551
552#define hci_dev_clear_volatile_flags(hdev) \
553 do { \
554 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
555 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
556 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
557 } while (0)
558
559/* ----- HCI interface to upper protocols ----- */
560int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
561int l2cap_disconn_ind(struct hci_conn *hcon);
562void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
563
564#if IS_ENABLED(CONFIG_BT_BREDR)
565int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
566void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
567#else
568static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
569 __u8 *flags)
570{
571 return 0;
572}
573
574static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
575{
576}
577#endif
578
579/* ----- Inquiry cache ----- */
580#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
581#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
582
583static inline void discovery_init(struct hci_dev *hdev)
584{
585 hdev->discovery.state = DISCOVERY_STOPPED;
586 INIT_LIST_HEAD(&hdev->discovery.all);
587 INIT_LIST_HEAD(&hdev->discovery.unknown);
588 INIT_LIST_HEAD(&hdev->discovery.resolve);
589 hdev->discovery.report_invalid_rssi = true;
590 hdev->discovery.rssi = HCI_RSSI_INVALID;
591}
592
593static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
594{
595 hdev->discovery.result_filtering = false;
596 hdev->discovery.report_invalid_rssi = true;
597 hdev->discovery.rssi = HCI_RSSI_INVALID;
598 hdev->discovery.uuid_count = 0;
599 kfree(hdev->discovery.uuids);
600 hdev->discovery.uuids = NULL;
601 hdev->discovery.scan_start = 0;
602 hdev->discovery.scan_duration = 0;
603}
604
605bool hci_discovery_active(struct hci_dev *hdev);
606
607void hci_discovery_set_state(struct hci_dev *hdev, int state);
608
609static inline int inquiry_cache_empty(struct hci_dev *hdev)
610{
611 return list_empty(&hdev->discovery.all);
612}
613
614static inline long inquiry_cache_age(struct hci_dev *hdev)
615{
616 struct discovery_state *c = &hdev->discovery;
617 return jiffies - c->timestamp;
618}
619
620static inline long inquiry_entry_age(struct inquiry_entry *e)
621{
622 return jiffies - e->timestamp;
623}
624
625struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
626 bdaddr_t *bdaddr);
627struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
628 bdaddr_t *bdaddr);
629struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
630 bdaddr_t *bdaddr,
631 int state);
632void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
633 struct inquiry_entry *ie);
634u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
635 bool name_known);
636void hci_inquiry_cache_flush(struct hci_dev *hdev);
637
638/* ----- HCI Connections ----- */
639enum {
640 HCI_CONN_AUTH_PEND,
641 HCI_CONN_REAUTH_PEND,
642 HCI_CONN_ENCRYPT_PEND,
643 HCI_CONN_RSWITCH_PEND,
644 HCI_CONN_MODE_CHANGE_PEND,
645 HCI_CONN_SCO_SETUP_PEND,
646 HCI_CONN_MGMT_CONNECTED,
647 HCI_CONN_SSP_ENABLED,
648 HCI_CONN_SC_ENABLED,
649 HCI_CONN_AES_CCM,
650 HCI_CONN_POWER_SAVE,
651 HCI_CONN_FLUSH_KEY,
652 HCI_CONN_ENCRYPT,
653 HCI_CONN_AUTH,
654 HCI_CONN_SECURE,
655 HCI_CONN_FIPS,
656 HCI_CONN_STK_ENCRYPT,
657 HCI_CONN_AUTH_INITIATOR,
658 HCI_CONN_DROP,
659 HCI_CONN_PARAM_REMOVAL_PEND,
660 HCI_CONN_NEW_LINK_KEY,
661 HCI_CONN_SCANNING,
662 HCI_CONN_AUTH_FAILURE,
663};
664
665static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
666{
667 struct hci_dev *hdev = conn->hdev;
668 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
669 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
670}
671
672static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
673{
674 struct hci_dev *hdev = conn->hdev;
675 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
676 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
677}
678
679static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
680{
681 struct hci_conn_hash *h = &hdev->conn_hash;
682 list_add_rcu(&c->list, &h->list);
683 switch (c->type) {
684 case ACL_LINK:
685 h->acl_num++;
686 break;
687 case AMP_LINK:
688 h->amp_num++;
689 break;
690 case LE_LINK:
691 h->le_num++;
692 if (c->role == HCI_ROLE_SLAVE)
693 h->le_num_slave++;
694 break;
695 case SCO_LINK:
696 case ESCO_LINK:
697 h->sco_num++;
698 break;
699 }
700}
701
702static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
703{
704 struct hci_conn_hash *h = &hdev->conn_hash;
705
706 list_del_rcu(&c->list);
707 synchronize_rcu();
708
709 switch (c->type) {
710 case ACL_LINK:
711 h->acl_num--;
712 break;
713 case AMP_LINK:
714 h->amp_num--;
715 break;
716 case LE_LINK:
717 h->le_num--;
718 if (c->role == HCI_ROLE_SLAVE)
719 h->le_num_slave--;
720 break;
721 case SCO_LINK:
722 case ESCO_LINK:
723 h->sco_num--;
724 break;
725 }
726}
727
728static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
729{
730 struct hci_conn_hash *h = &hdev->conn_hash;
731 switch (type) {
732 case ACL_LINK:
733 return h->acl_num;
734 case AMP_LINK:
735 return h->amp_num;
736 case LE_LINK:
737 return h->le_num;
738 case SCO_LINK:
739 case ESCO_LINK:
740 return h->sco_num;
741 default:
742 return 0;
743 }
744}
745
746static inline unsigned int hci_conn_count(struct hci_dev *hdev)
747{
748 struct hci_conn_hash *c = &hdev->conn_hash;
749
750 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
751}
752
753static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
754{
755 struct hci_conn_hash *h = &hdev->conn_hash;
756 struct hci_conn *c;
757 __u8 type = INVALID_LINK;
758
759 rcu_read_lock();
760
761 list_for_each_entry_rcu(c, &h->list, list) {
762 if (c->handle == handle) {
763 type = c->type;
764 break;
765 }
766 }
767
768 rcu_read_unlock();
769
770 return type;
771}
772
773static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
774 __u16 handle)
775{
776 struct hci_conn_hash *h = &hdev->conn_hash;
777 struct hci_conn *c;
778
779 rcu_read_lock();
780
781 list_for_each_entry_rcu(c, &h->list, list) {
782 if (c->handle == handle) {
783 rcu_read_unlock();
784 return c;
785 }
786 }
787 rcu_read_unlock();
788
789 return NULL;
790}
791
792static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
793 __u8 type, bdaddr_t *ba)
794{
795 struct hci_conn_hash *h = &hdev->conn_hash;
796 struct hci_conn *c;
797
798 rcu_read_lock();
799
800 list_for_each_entry_rcu(c, &h->list, list) {
801 if (c->type == type && !bacmp(&c->dst, ba)) {
802 rcu_read_unlock();
803 return c;
804 }
805 }
806
807 rcu_read_unlock();
808
809 return NULL;
810}
811
812static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
813 bdaddr_t *ba,
814 __u8 ba_type)
815{
816 struct hci_conn_hash *h = &hdev->conn_hash;
817 struct hci_conn *c;
818
819 rcu_read_lock();
820
821 list_for_each_entry_rcu(c, &h->list, list) {
822 if (c->type != LE_LINK)
823 continue;
824
825 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
826 rcu_read_unlock();
827 return c;
828 }
829 }
830
831 rcu_read_unlock();
832
833 return NULL;
834}
835
836static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
837 __u8 type, __u16 state)
838{
839 struct hci_conn_hash *h = &hdev->conn_hash;
840 struct hci_conn *c;
841
842 rcu_read_lock();
843
844 list_for_each_entry_rcu(c, &h->list, list) {
845 if (c->type == type && c->state == state) {
846 rcu_read_unlock();
847 return c;
848 }
849 }
850
851 rcu_read_unlock();
852
853 return NULL;
854}
855
856static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
857{
858 struct hci_conn_hash *h = &hdev->conn_hash;
859 struct hci_conn *c;
860
861 rcu_read_lock();
862
863 list_for_each_entry_rcu(c, &h->list, list) {
864 if (c->type == LE_LINK && c->state == BT_CONNECT &&
865 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
866 rcu_read_unlock();
867 return c;
868 }
869 }
870
871 rcu_read_unlock();
872
873 return NULL;
874}
875
876int hci_disconnect(struct hci_conn *conn, __u8 reason);
877bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
878void hci_sco_setup(struct hci_conn *conn, __u8 status);
879
880struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
881 u8 role);
882int hci_conn_del(struct hci_conn *conn);
883void hci_conn_hash_flush(struct hci_dev *hdev);
884void hci_conn_check_pending(struct hci_dev *hdev);
885
886struct hci_chan *hci_chan_create(struct hci_conn *conn);
887void hci_chan_del(struct hci_chan *chan);
888void hci_chan_list_flush(struct hci_conn *conn);
889struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
890
891struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
892 u8 dst_type, u8 sec_level,
893 u16 conn_timeout);
894struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
895 u8 dst_type, u8 sec_level, u16 conn_timeout,
896 u8 role);
897struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
898 u8 sec_level, u8 auth_type);
899struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
900 __u16 setting);
901int hci_conn_check_link_mode(struct hci_conn *conn);
902int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
903int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
904 bool initiator);
905int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
906
907void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
908
909void hci_le_conn_failed(struct hci_conn *conn, u8 status);
910
911/*
912 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
913 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
914 * working or anything else. They just guarantee that the object is available
915 * and can be dereferenced. So you can use its locks, local variables and any
916 * other constant data.
917 * Before accessing runtime data, you _must_ lock the object and then check that
918 * it is still running. As soon as you release the locks, the connection might
919 * get dropped, though.
920 *
921 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
922 * how long the underlying connection is held. So every channel that runs on the
923 * hci_conn object calls this to prevent the connection from disappearing. As
924 * long as you hold a device, you must also guarantee that you have a valid
925 * reference to the device via hci_conn_get() (or the initial reference from
926 * hci_conn_add()).
927 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
928 * break because nobody cares for that. But this means, we cannot use
929 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
930 */
931
932static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
933{
934 get_device(&conn->dev);
935 return conn;
936}
937
938static inline void hci_conn_put(struct hci_conn *conn)
939{
940 put_device(&conn->dev);
941}
942
943static inline void hci_conn_hold(struct hci_conn *conn)
944{
945 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
946
947 atomic_inc(&conn->refcnt);
948 cancel_delayed_work(&conn->disc_work);
949}
950
951static inline void hci_conn_drop(struct hci_conn *conn)
952{
953 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
954
955 if (atomic_dec_and_test(&conn->refcnt)) {
956 unsigned long timeo;
957
958 switch (conn->type) {
959 case ACL_LINK:
960 case LE_LINK:
961 cancel_delayed_work(&conn->idle_work);
962 if (conn->state == BT_CONNECTED) {
963 timeo = conn->disc_timeout;
964 if (!conn->out)
965 timeo *= 2;
966 } else {
967 timeo = 0;
968 }
969 break;
970
971 case AMP_LINK:
972 timeo = conn->disc_timeout;
973 break;
974
975 default:
976 timeo = 0;
977 break;
978 }
979
980 cancel_delayed_work(&conn->disc_work);
981 queue_delayed_work(conn->hdev->workqueue,
982 &conn->disc_work, timeo);
983 }
984}
985
986/* ----- HCI Devices ----- */
987static inline void hci_dev_put(struct hci_dev *d)
988{
989 BT_DBG("%s orig refcnt %d", d->name,
990 atomic_read(&d->dev.kobj.kref.refcount));
991
992 put_device(&d->dev);
993}
994
995static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
996{
997 BT_DBG("%s orig refcnt %d", d->name,
998 atomic_read(&d->dev.kobj.kref.refcount));
999
1000 get_device(&d->dev);
1001 return d;
1002}
1003
1004#define hci_dev_lock(d) mutex_lock(&d->lock)
1005#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1006
1007#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1008#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1009
1010static inline void *hci_get_drvdata(struct hci_dev *hdev)
1011{
1012 return dev_get_drvdata(&hdev->dev);
1013}
1014
1015static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1016{
1017 dev_set_drvdata(&hdev->dev, data);
1018}
1019
1020struct hci_dev *hci_dev_get(int index);
1021struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1022
1023struct hci_dev *hci_alloc_dev(void);
1024void hci_free_dev(struct hci_dev *hdev);
1025int hci_register_dev(struct hci_dev *hdev);
1026void hci_unregister_dev(struct hci_dev *hdev);
1027int hci_suspend_dev(struct hci_dev *hdev);
1028int hci_resume_dev(struct hci_dev *hdev);
1029int hci_reset_dev(struct hci_dev *hdev);
1030int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1031int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1032__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1033__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1034int hci_dev_open(__u16 dev);
1035int hci_dev_close(__u16 dev);
1036int hci_dev_do_close(struct hci_dev *hdev);
1037int hci_dev_reset(__u16 dev);
1038int hci_dev_reset_stat(__u16 dev);
1039int hci_dev_cmd(unsigned int cmd, void __user *arg);
1040int hci_get_dev_list(void __user *arg);
1041int hci_get_dev_info(void __user *arg);
1042int hci_get_conn_list(void __user *arg);
1043int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1044int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1045int hci_inquiry(void __user *arg);
1046
1047struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1048 bdaddr_t *bdaddr, u8 type);
1049int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1050int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1051void hci_bdaddr_list_clear(struct list_head *list);
1052
1053struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1054 bdaddr_t *addr, u8 addr_type);
1055struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1056 bdaddr_t *addr, u8 addr_type);
1057void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1058void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1059
1060struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1061 bdaddr_t *addr,
1062 u8 addr_type);
1063
1064void hci_uuids_clear(struct hci_dev *hdev);
1065
1066void hci_link_keys_clear(struct hci_dev *hdev);
1067struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1068struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1069 bdaddr_t *bdaddr, u8 *val, u8 type,
1070 u8 pin_len, bool *persistent);
1071struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1072 u8 addr_type, u8 type, u8 authenticated,
1073 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1074struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1075 u8 addr_type, u8 role);
1076int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1077void hci_smp_ltks_clear(struct hci_dev *hdev);
1078int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1079
1080struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1081struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1082 u8 addr_type);
1083struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1085void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1086void hci_smp_irks_clear(struct hci_dev *hdev);
1087
1088bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1089
1090void hci_remote_oob_data_clear(struct hci_dev *hdev);
1091struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1092 bdaddr_t *bdaddr, u8 bdaddr_type);
1093int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1095 u8 *hash256, u8 *rand256);
1096int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097 u8 bdaddr_type);
1098
1099void hci_adv_instances_clear(struct hci_dev *hdev);
1100struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1101struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1102int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1103 u16 adv_data_len, u8 *adv_data,
1104 u16 scan_rsp_len, u8 *scan_rsp_data,
1105 u16 timeout, u16 duration);
1106int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1107
1108void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1109
1110void hci_init_sysfs(struct hci_dev *hdev);
1111void hci_conn_init_sysfs(struct hci_conn *conn);
1112void hci_conn_add_sysfs(struct hci_conn *conn);
1113void hci_conn_del_sysfs(struct hci_conn *conn);
1114
1115#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1116
1117/* ----- LMP capabilities ----- */
1118#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1119#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1120#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1121#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1122#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1123#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1124#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1125#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1126#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1127#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1128#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1129#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1130#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1131#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1132#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1133#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1134#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1135#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1136#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1137
1138/* ----- Extended LMP capabilities ----- */
1139#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1140#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1141#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1142#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1143#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1144#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1145
1146/* ----- Host capabilities ----- */
1147#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1148#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1149#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1150#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1151
1152#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1153 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1154#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1155 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1156
1157/* ----- HCI protocols ----- */
1158#define HCI_PROTO_DEFER 0x01
1159
1160static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1161 __u8 type, __u8 *flags)
1162{
1163 switch (type) {
1164 case ACL_LINK:
1165 return l2cap_connect_ind(hdev, bdaddr);
1166
1167 case SCO_LINK:
1168 case ESCO_LINK:
1169 return sco_connect_ind(hdev, bdaddr, flags);
1170
1171 default:
1172 BT_ERR("unknown link type %d", type);
1173 return -EINVAL;
1174 }
1175}
1176
1177static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1178{
1179 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1180 return HCI_ERROR_REMOTE_USER_TERM;
1181
1182 return l2cap_disconn_ind(conn);
1183}
1184
1185/* ----- HCI callbacks ----- */
1186struct hci_cb {
1187 struct list_head list;
1188
1189 char *name;
1190
1191 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1192 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1193 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1194 __u8 encrypt);
1195 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1196 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1197};
1198
1199static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1200{
1201 struct hci_cb *cb;
1202
1203 mutex_lock(&hci_cb_list_lock);
1204 list_for_each_entry(cb, &hci_cb_list, list) {
1205 if (cb->connect_cfm)
1206 cb->connect_cfm(conn, status);
1207 }
1208 mutex_unlock(&hci_cb_list_lock);
1209
1210 if (conn->connect_cfm_cb)
1211 conn->connect_cfm_cb(conn, status);
1212}
1213
1214static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1215{
1216 struct hci_cb *cb;
1217
1218 mutex_lock(&hci_cb_list_lock);
1219 list_for_each_entry(cb, &hci_cb_list, list) {
1220 if (cb->disconn_cfm)
1221 cb->disconn_cfm(conn, reason);
1222 }
1223 mutex_unlock(&hci_cb_list_lock);
1224
1225 if (conn->disconn_cfm_cb)
1226 conn->disconn_cfm_cb(conn, reason);
1227}
1228
1229static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1230{
1231 struct hci_cb *cb;
1232 __u8 encrypt;
1233
1234 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1235 return;
1236
1237 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1238
1239 mutex_lock(&hci_cb_list_lock);
1240 list_for_each_entry(cb, &hci_cb_list, list) {
1241 if (cb->security_cfm)
1242 cb->security_cfm(conn, status, encrypt);
1243 }
1244 mutex_unlock(&hci_cb_list_lock);
1245
1246 if (conn->security_cfm_cb)
1247 conn->security_cfm_cb(conn, status);
1248}
1249
1250static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1251 __u8 encrypt)
1252{
1253 struct hci_cb *cb;
1254
1255 if (conn->sec_level == BT_SECURITY_SDP)
1256 conn->sec_level = BT_SECURITY_LOW;
1257
1258 if (conn->pending_sec_level > conn->sec_level)
1259 conn->sec_level = conn->pending_sec_level;
1260
1261 mutex_lock(&hci_cb_list_lock);
1262 list_for_each_entry(cb, &hci_cb_list, list) {
1263 if (cb->security_cfm)
1264 cb->security_cfm(conn, status, encrypt);
1265 }
1266 mutex_unlock(&hci_cb_list_lock);
1267
1268 if (conn->security_cfm_cb)
1269 conn->security_cfm_cb(conn, status);
1270}
1271
1272static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1273{
1274 struct hci_cb *cb;
1275
1276 mutex_lock(&hci_cb_list_lock);
1277 list_for_each_entry(cb, &hci_cb_list, list) {
1278 if (cb->key_change_cfm)
1279 cb->key_change_cfm(conn, status);
1280 }
1281 mutex_unlock(&hci_cb_list_lock);
1282}
1283
1284static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1285 __u8 role)
1286{
1287 struct hci_cb *cb;
1288
1289 mutex_lock(&hci_cb_list_lock);
1290 list_for_each_entry(cb, &hci_cb_list, list) {
1291 if (cb->role_switch_cfm)
1292 cb->role_switch_cfm(conn, status, role);
1293 }
1294 mutex_unlock(&hci_cb_list_lock);
1295}
1296
1297static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1298 size_t *data_len)
1299{
1300 size_t parsed = 0;
1301
1302 if (eir_len < 2)
1303 return NULL;
1304
1305 while (parsed < eir_len - 1) {
1306 u8 field_len = eir[0];
1307
1308 if (field_len == 0)
1309 break;
1310
1311 parsed += field_len + 1;
1312
1313 if (parsed > eir_len)
1314 break;
1315
1316 if (eir[1] != type) {
1317 eir += field_len + 1;
1318 continue;
1319 }
1320
1321 /* Zero length data */
1322 if (field_len == 1)
1323 return NULL;
1324
1325 if (data_len)
1326 *data_len = field_len - 1;
1327
1328 return &eir[2];
1329 }
1330
1331 return NULL;
1332}
1333
1334static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1335{
1336 if (addr_type != ADDR_LE_DEV_RANDOM)
1337 return false;
1338
1339 if ((bdaddr->b[5] & 0xc0) == 0x40)
1340 return true;
1341
1342 return false;
1343}
1344
1345static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1346{
1347 if (addr_type == ADDR_LE_DEV_PUBLIC)
1348 return true;
1349
1350 /* Check for Random Static address type */
1351 if ((addr->b[5] & 0xc0) == 0xc0)
1352 return true;
1353
1354 return false;
1355}
1356
1357static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1358 bdaddr_t *bdaddr, u8 addr_type)
1359{
1360 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1361 return NULL;
1362
1363 return hci_find_irk_by_rpa(hdev, bdaddr);
1364}
1365
1366static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1367 u16 to_multiplier)
1368{
1369 u16 max_latency;
1370
1371 if (min > max || min < 6 || max > 3200)
1372 return -EINVAL;
1373
1374 if (to_multiplier < 10 || to_multiplier > 3200)
1375 return -EINVAL;
1376
1377 if (max >= to_multiplier * 8)
1378 return -EINVAL;
1379
1380 max_latency = (to_multiplier * 4 / max) - 1;
1381 if (latency > 499 || latency > max_latency)
1382 return -EINVAL;
1383
1384 return 0;
1385}
1386
1387int hci_register_cb(struct hci_cb *hcb);
1388int hci_unregister_cb(struct hci_cb *hcb);
1389
1390struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1391 const void *param, u32 timeout);
1392struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1393 const void *param, u8 event, u32 timeout);
1394
1395int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1396 const void *param);
1397void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1398void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1399
1400void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1401
1402struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1403 const void *param, u32 timeout);
1404
1405/* ----- HCI Sockets ----- */
1406void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1407void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1408 int flag, struct sock *skip_sk);
1409void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1410void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1411 void *data, u16 data_len, ktime_t tstamp,
1412 int flag, struct sock *skip_sk);
1413
1414void hci_sock_dev_event(struct hci_dev *hdev, int event);
1415
1416#define HCI_MGMT_VAR_LEN BIT(0)
1417#define HCI_MGMT_NO_HDEV BIT(1)
1418#define HCI_MGMT_UNTRUSTED BIT(2)
1419#define HCI_MGMT_UNCONFIGURED BIT(3)
1420
1421struct hci_mgmt_handler {
1422 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1423 u16 data_len);
1424 size_t data_len;
1425 unsigned long flags;
1426};
1427
1428struct hci_mgmt_chan {
1429 struct list_head list;
1430 unsigned short channel;
1431 size_t handler_count;
1432 const struct hci_mgmt_handler *handlers;
1433 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1434};
1435
1436int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1437void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1438
1439/* Management interface */
1440#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1441#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1442 BIT(BDADDR_LE_RANDOM))
1443#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1444 BIT(BDADDR_LE_PUBLIC) | \
1445 BIT(BDADDR_LE_RANDOM))
1446
1447/* These LE scan and inquiry parameters were chosen according to LE General
1448 * Discovery Procedure specification.
1449 */
1450#define DISCOV_LE_SCAN_WIN 0x12
1451#define DISCOV_LE_SCAN_INT 0x12
1452#define DISCOV_LE_TIMEOUT 10240 /* msec */
1453#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1454#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1455#define DISCOV_BREDR_INQUIRY_LEN 0x08
1456#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1457
1458void mgmt_fill_version_info(void *ver);
1459int mgmt_new_settings(struct hci_dev *hdev);
1460void mgmt_index_added(struct hci_dev *hdev);
1461void mgmt_index_removed(struct hci_dev *hdev);
1462void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1463void mgmt_power_on(struct hci_dev *hdev, int err);
1464void __mgmt_power_off(struct hci_dev *hdev);
1465void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1466 bool persistent);
1467void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1468 u32 flags, u8 *name, u8 name_len);
1469void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1470 u8 link_type, u8 addr_type, u8 reason,
1471 bool mgmt_connected);
1472void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1473 u8 link_type, u8 addr_type, u8 status);
1474void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1475 u8 addr_type, u8 status);
1476void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1477void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1478 u8 status);
1479void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 u8 status);
1481int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 link_type, u8 addr_type, u32 value,
1483 u8 confirm_hint);
1484int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1485 u8 link_type, u8 addr_type, u8 status);
1486int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type);
1490int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type, u8 status);
1492int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1493 u8 link_type, u8 addr_type, u8 status);
1494int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1495 u8 link_type, u8 addr_type, u32 passkey,
1496 u8 entered);
1497void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1498void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1499void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1500void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1501 u8 status);
1502void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1503void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1504void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1505void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1506 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1507 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1508void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1509 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1510void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1511bool mgmt_powering_down(struct hci_dev *hdev);
1512void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1513void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1514void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1515 bool persistent);
1516void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1517 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1518 u16 max_interval, u16 latency, u16 timeout);
1519void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1520bool mgmt_get_connectable(struct hci_dev *hdev);
1521void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1522void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1523u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1524void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1525 u8 instance);
1526void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1527 u8 instance);
1528
1529u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1530 u16 to_multiplier);
1531void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1532 __u8 ltk[16], __u8 key_size);
1533
1534void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535 u8 *bdaddr_type);
1536
1537#define SCO_AIRMODE_MASK 0x0003
1538#define SCO_AIRMODE_CVSD 0x0000
1539#define SCO_AIRMODE_TRANSP 0x0003
1540
1541#endif /* __HCI_CORE_H */