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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 Copyright 2023-2024 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24*/
25
26#ifndef __HCI_CORE_H
27#define __HCI_CORE_H
28
29#include <linux/idr.h>
30#include <linux/leds.h>
31#include <linux/rculist.h>
32
33#include <net/bluetooth/hci.h>
34#include <net/bluetooth/hci_sync.h>
35#include <net/bluetooth/hci_sock.h>
36#include <net/bluetooth/coredump.h>
37
38/* HCI priority */
39#define HCI_PRIO_MAX 7
40
41/* HCI maximum id value */
42#define HCI_MAX_ID 10000
43
44/* HCI Core structures */
45struct inquiry_data {
46 bdaddr_t bdaddr;
47 __u8 pscan_rep_mode;
48 __u8 pscan_period_mode;
49 __u8 pscan_mode;
50 __u8 dev_class[3];
51 __le16 clock_offset;
52 __s8 rssi;
53 __u8 ssp_mode;
54};
55
56struct inquiry_entry {
57 struct list_head all; /* inq_cache.all */
58 struct list_head list; /* unknown or resolve */
59 enum {
60 NAME_NOT_KNOWN,
61 NAME_NEEDED,
62 NAME_PENDING,
63 NAME_KNOWN,
64 } name_state;
65 __u32 timestamp;
66 struct inquiry_data data;
67};
68
69struct discovery_state {
70 int type;
71 enum {
72 DISCOVERY_STOPPED,
73 DISCOVERY_STARTING,
74 DISCOVERY_FINDING,
75 DISCOVERY_RESOLVING,
76 DISCOVERY_STOPPING,
77 } state;
78 struct list_head all; /* All devices found during inquiry */
79 struct list_head unknown; /* Name state not known */
80 struct list_head resolve; /* Name needs to be resolved */
81 __u32 timestamp;
82 bdaddr_t last_adv_addr;
83 u8 last_adv_addr_type;
84 s8 last_adv_rssi;
85 u32 last_adv_flags;
86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH];
87 u8 last_adv_data_len;
88 bool report_invalid_rssi;
89 bool result_filtering;
90 bool limited;
91 s8 rssi;
92 u16 uuid_count;
93 u8 (*uuids)[16];
94 unsigned long scan_start;
95 unsigned long scan_duration;
96 unsigned long name_resolve_timeout;
97};
98
99#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
100
101enum suspend_tasks {
102 SUSPEND_PAUSE_DISCOVERY,
103 SUSPEND_UNPAUSE_DISCOVERY,
104
105 SUSPEND_PAUSE_ADVERTISING,
106 SUSPEND_UNPAUSE_ADVERTISING,
107
108 SUSPEND_SCAN_DISABLE,
109 SUSPEND_SCAN_ENABLE,
110 SUSPEND_DISCONNECTING,
111
112 SUSPEND_POWERING_DOWN,
113
114 SUSPEND_PREPARE_NOTIFIER,
115
116 SUSPEND_SET_ADV_FILTER,
117 __SUSPEND_NUM_TASKS
118};
119
120enum suspended_state {
121 BT_RUNNING = 0,
122 BT_SUSPEND_DISCONNECT,
123 BT_SUSPEND_CONFIGURE_WAKE,
124};
125
126struct hci_conn_hash {
127 struct list_head list;
128 unsigned int acl_num;
129 unsigned int sco_num;
130 unsigned int iso_num;
131 unsigned int le_num;
132 unsigned int le_num_peripheral;
133};
134
135struct bdaddr_list {
136 struct list_head list;
137 bdaddr_t bdaddr;
138 u8 bdaddr_type;
139};
140
141struct codec_list {
142 struct list_head list;
143 u8 id;
144 __u16 cid;
145 __u16 vid;
146 u8 transport;
147 u8 num_caps;
148 u32 len;
149 struct hci_codec_caps caps[];
150};
151
152struct bdaddr_list_with_irk {
153 struct list_head list;
154 bdaddr_t bdaddr;
155 u8 bdaddr_type;
156 u8 peer_irk[16];
157 u8 local_irk[16];
158};
159
160/* Bitmask of connection flags */
161enum hci_conn_flags {
162 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
163 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
164};
165typedef u8 hci_conn_flags_t;
166
167struct bdaddr_list_with_flags {
168 struct list_head list;
169 bdaddr_t bdaddr;
170 u8 bdaddr_type;
171 hci_conn_flags_t flags;
172};
173
174struct bt_uuid {
175 struct list_head list;
176 u8 uuid[16];
177 u8 size;
178 u8 svc_hint;
179};
180
181struct blocked_key {
182 struct list_head list;
183 struct rcu_head rcu;
184 u8 type;
185 u8 val[16];
186};
187
188struct smp_csrk {
189 bdaddr_t bdaddr;
190 u8 bdaddr_type;
191 u8 link_type;
192 u8 type;
193 u8 val[16];
194};
195
196struct smp_ltk {
197 struct list_head list;
198 struct rcu_head rcu;
199 bdaddr_t bdaddr;
200 u8 bdaddr_type;
201 u8 link_type;
202 u8 authenticated;
203 u8 type;
204 u8 enc_size;
205 __le16 ediv;
206 __le64 rand;
207 u8 val[16];
208};
209
210struct smp_irk {
211 struct list_head list;
212 struct rcu_head rcu;
213 bdaddr_t rpa;
214 bdaddr_t bdaddr;
215 u8 addr_type;
216 u8 link_type;
217 u8 val[16];
218};
219
220struct link_key {
221 struct list_head list;
222 struct rcu_head rcu;
223 bdaddr_t bdaddr;
224 u8 bdaddr_type;
225 u8 link_type;
226 u8 type;
227 u8 val[HCI_LINK_KEY_SIZE];
228 u8 pin_len;
229};
230
231struct oob_data {
232 struct list_head list;
233 bdaddr_t bdaddr;
234 u8 bdaddr_type;
235 u8 present;
236 u8 hash192[16];
237 u8 rand192[16];
238 u8 hash256[16];
239 u8 rand256[16];
240};
241
242struct adv_info {
243 struct list_head list;
244 bool enabled;
245 bool pending;
246 bool periodic;
247 __u8 mesh;
248 __u8 instance;
249 __u8 handle;
250 __u32 flags;
251 __u16 timeout;
252 __u16 remaining_time;
253 __u16 duration;
254 __u16 adv_data_len;
255 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
256 bool adv_data_changed;
257 __u16 scan_rsp_len;
258 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
259 bool scan_rsp_changed;
260 __u16 per_adv_data_len;
261 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
262 __s8 tx_power;
263 __u32 min_interval;
264 __u32 max_interval;
265 bdaddr_t random_addr;
266 bool rpa_expired;
267 struct delayed_work rpa_expired_cb;
268};
269
270#define HCI_MAX_ADV_INSTANCES 5
271#define HCI_DEFAULT_ADV_DURATION 2
272
273#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
274
275#define DATA_CMP(_d1, _l1, _d2, _l2) \
276 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
277
278#define ADV_DATA_CMP(_adv, _data, _len) \
279 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
280
281#define SCAN_RSP_CMP(_adv, _data, _len) \
282 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
283
284struct monitored_device {
285 struct list_head list;
286
287 bdaddr_t bdaddr;
288 __u8 addr_type;
289 __u16 handle;
290 bool notified;
291};
292
293struct adv_pattern {
294 struct list_head list;
295 __u8 ad_type;
296 __u8 offset;
297 __u8 length;
298 __u8 value[HCI_MAX_EXT_AD_LENGTH];
299};
300
301struct adv_rssi_thresholds {
302 __s8 low_threshold;
303 __s8 high_threshold;
304 __u16 low_threshold_timeout;
305 __u16 high_threshold_timeout;
306 __u8 sampling_period;
307};
308
309struct adv_monitor {
310 struct list_head patterns;
311 struct adv_rssi_thresholds rssi;
312 __u16 handle;
313
314 enum {
315 ADV_MONITOR_STATE_NOT_REGISTERED,
316 ADV_MONITOR_STATE_REGISTERED,
317 ADV_MONITOR_STATE_OFFLOADED
318 } state;
319};
320
321#define HCI_MIN_ADV_MONITOR_HANDLE 1
322#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
323#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
324#define HCI_ADV_MONITOR_EXT_NONE 1
325#define HCI_ADV_MONITOR_EXT_MSFT 2
326
327#define HCI_MAX_SHORT_NAME_LENGTH 10
328
329#define HCI_CONN_HANDLE_MAX 0x0eff
330#define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
331
332/* Min encryption key size to match with SMP */
333#define HCI_MIN_ENC_KEY_SIZE 7
334
335/* Default LE RPA expiry time, 15 minutes */
336#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
337
338/* Default min/max age of connection information (1s/3s) */
339#define DEFAULT_CONN_INFO_MIN_AGE 1000
340#define DEFAULT_CONN_INFO_MAX_AGE 3000
341/* Default authenticated payload timeout 30s */
342#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
343
344#define HCI_MAX_PAGES 3
345
346struct hci_dev {
347 struct list_head list;
348 struct mutex lock;
349
350 struct ida unset_handle_ida;
351
352 const char *name;
353 unsigned long flags;
354 __u16 id;
355 __u8 bus;
356 bdaddr_t bdaddr;
357 bdaddr_t setup_addr;
358 bdaddr_t public_addr;
359 bdaddr_t random_addr;
360 bdaddr_t static_addr;
361 __u8 adv_addr_type;
362 __u8 dev_name[HCI_MAX_NAME_LENGTH];
363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
364 __u8 eir[HCI_MAX_EIR_LENGTH];
365 __u16 appearance;
366 __u8 dev_class[3];
367 __u8 major_class;
368 __u8 minor_class;
369 __u8 max_page;
370 __u8 features[HCI_MAX_PAGES][8];
371 __u8 le_features[8];
372 __u8 le_accept_list_size;
373 __u8 le_resolv_list_size;
374 __u8 le_num_of_adv_sets;
375 __u8 le_states[8];
376 __u8 mesh_ad_types[16];
377 __u8 mesh_send_ref;
378 __u8 commands[64];
379 __u8 hci_ver;
380 __u16 hci_rev;
381 __u8 lmp_ver;
382 __u16 manufacturer;
383 __u16 lmp_subver;
384 __u16 voice_setting;
385 __u8 num_iac;
386 __u16 stored_max_keys;
387 __u16 stored_num_keys;
388 __u8 io_capability;
389 __s8 inq_tx_power;
390 __u8 err_data_reporting;
391 __u16 page_scan_interval;
392 __u16 page_scan_window;
393 __u8 page_scan_type;
394 __u8 le_adv_channel_map;
395 __u16 le_adv_min_interval;
396 __u16 le_adv_max_interval;
397 __u8 le_scan_type;
398 __u16 le_scan_interval;
399 __u16 le_scan_window;
400 __u16 le_scan_int_suspend;
401 __u16 le_scan_window_suspend;
402 __u16 le_scan_int_discovery;
403 __u16 le_scan_window_discovery;
404 __u16 le_scan_int_adv_monitor;
405 __u16 le_scan_window_adv_monitor;
406 __u16 le_scan_int_connect;
407 __u16 le_scan_window_connect;
408 __u16 le_conn_min_interval;
409 __u16 le_conn_max_interval;
410 __u16 le_conn_latency;
411 __u16 le_supv_timeout;
412 __u16 le_def_tx_len;
413 __u16 le_def_tx_time;
414 __u16 le_max_tx_len;
415 __u16 le_max_tx_time;
416 __u16 le_max_rx_len;
417 __u16 le_max_rx_time;
418 __u8 le_max_key_size;
419 __u8 le_min_key_size;
420 __u16 discov_interleaved_timeout;
421 __u16 conn_info_min_age;
422 __u16 conn_info_max_age;
423 __u16 auth_payload_timeout;
424 __u8 min_enc_key_size;
425 __u8 max_enc_key_size;
426 __u8 pairing_opts;
427 __u8 ssp_debug_mode;
428 __u8 hw_error_code;
429 __u32 clock;
430 __u16 advmon_allowlist_duration;
431 __u16 advmon_no_filter_duration;
432 __u8 enable_advmon_interleave_scan;
433
434 __u16 devid_source;
435 __u16 devid_vendor;
436 __u16 devid_product;
437 __u16 devid_version;
438
439 __u8 def_page_scan_type;
440 __u16 def_page_scan_int;
441 __u16 def_page_scan_window;
442 __u8 def_inq_scan_type;
443 __u16 def_inq_scan_int;
444 __u16 def_inq_scan_window;
445 __u16 def_br_lsto;
446 __u16 def_page_timeout;
447 __u16 def_multi_adv_rotation_duration;
448 __u16 def_le_autoconnect_timeout;
449 __s8 min_le_tx_power;
450 __s8 max_le_tx_power;
451
452 __u16 pkt_type;
453 __u16 esco_type;
454 __u16 link_policy;
455 __u16 link_mode;
456
457 __u32 idle_timeout;
458 __u16 sniff_min_interval;
459 __u16 sniff_max_interval;
460
461 unsigned int auto_accept_delay;
462
463 unsigned long quirks;
464
465 atomic_t cmd_cnt;
466 unsigned int acl_cnt;
467 unsigned int sco_cnt;
468 unsigned int le_cnt;
469 unsigned int iso_cnt;
470
471 unsigned int acl_mtu;
472 unsigned int sco_mtu;
473 unsigned int le_mtu;
474 unsigned int iso_mtu;
475 unsigned int acl_pkts;
476 unsigned int sco_pkts;
477 unsigned int le_pkts;
478 unsigned int iso_pkts;
479
480 unsigned long acl_last_tx;
481 unsigned long sco_last_tx;
482 unsigned long le_last_tx;
483
484 __u8 le_tx_def_phys;
485 __u8 le_rx_def_phys;
486
487 struct workqueue_struct *workqueue;
488 struct workqueue_struct *req_workqueue;
489
490 struct work_struct power_on;
491 struct delayed_work power_off;
492 struct work_struct error_reset;
493 struct work_struct cmd_sync_work;
494 struct list_head cmd_sync_work_list;
495 struct mutex cmd_sync_work_lock;
496 struct mutex unregister_lock;
497 struct work_struct cmd_sync_cancel_work;
498 struct work_struct reenable_adv_work;
499
500 __u16 discov_timeout;
501 struct delayed_work discov_off;
502
503 struct delayed_work service_cache;
504
505 struct delayed_work cmd_timer;
506 struct delayed_work ncmd_timer;
507
508 struct work_struct rx_work;
509 struct work_struct cmd_work;
510 struct work_struct tx_work;
511
512 struct delayed_work le_scan_disable;
513
514 struct sk_buff_head rx_q;
515 struct sk_buff_head raw_q;
516 struct sk_buff_head cmd_q;
517
518 struct sk_buff *sent_cmd;
519 struct sk_buff *recv_event;
520
521 struct mutex req_lock;
522 wait_queue_head_t req_wait_q;
523 __u32 req_status;
524 __u32 req_result;
525 struct sk_buff *req_skb;
526 struct sk_buff *req_rsp;
527
528 void *smp_data;
529 void *smp_bredr_data;
530
531 struct discovery_state discovery;
532
533 int discovery_old_state;
534 bool discovery_paused;
535 int advertising_old_state;
536 bool advertising_paused;
537
538 struct notifier_block suspend_notifier;
539 enum suspended_state suspend_state_next;
540 enum suspended_state suspend_state;
541 bool scanning_paused;
542 bool suspended;
543 u8 wake_reason;
544 bdaddr_t wake_addr;
545 u8 wake_addr_type;
546
547 struct hci_conn_hash conn_hash;
548
549 struct list_head mesh_pending;
550 struct list_head mgmt_pending;
551 struct list_head reject_list;
552 struct list_head accept_list;
553 struct list_head uuids;
554 struct list_head link_keys;
555 struct list_head long_term_keys;
556 struct list_head identity_resolving_keys;
557 struct list_head remote_oob_data;
558 struct list_head le_accept_list;
559 struct list_head le_resolv_list;
560 struct list_head le_conn_params;
561 struct list_head pend_le_conns;
562 struct list_head pend_le_reports;
563 struct list_head blocked_keys;
564 struct list_head local_codecs;
565
566 struct hci_dev_stats stat;
567
568 atomic_t promisc;
569
570 const char *hw_info;
571 const char *fw_info;
572 struct dentry *debugfs;
573
574 struct hci_devcoredump dump;
575
576 struct device dev;
577
578 struct rfkill *rfkill;
579
580 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
581 hci_conn_flags_t conn_flags;
582
583 __s8 adv_tx_power;
584 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
585 __u8 adv_data_len;
586 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
587 __u8 scan_rsp_data_len;
588 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
589 __u8 per_adv_data_len;
590
591 struct list_head adv_instances;
592 unsigned int adv_instance_cnt;
593 __u8 cur_adv_instance;
594 __u16 adv_instance_timeout;
595 struct delayed_work adv_instance_expire;
596
597 struct idr adv_monitors_idr;
598 unsigned int adv_monitors_cnt;
599
600 __u8 irk[16];
601 __u32 rpa_timeout;
602 struct delayed_work rpa_expired;
603 bdaddr_t rpa;
604
605 struct delayed_work mesh_send_done;
606
607 enum {
608 INTERLEAVE_SCAN_NONE,
609 INTERLEAVE_SCAN_NO_FILTER,
610 INTERLEAVE_SCAN_ALLOWLIST
611 } interleave_scan_state;
612
613 struct delayed_work interleave_scan;
614
615 struct list_head monitored_devices;
616 bool advmon_pend_notify;
617
618#if IS_ENABLED(CONFIG_BT_LEDS)
619 struct led_trigger *power_led;
620#endif
621
622#if IS_ENABLED(CONFIG_BT_MSFTEXT)
623 __u16 msft_opcode;
624 void *msft_data;
625 bool msft_curve_validity;
626#endif
627
628#if IS_ENABLED(CONFIG_BT_AOSPEXT)
629 bool aosp_capable;
630 bool aosp_quality_report;
631#endif
632
633 int (*open)(struct hci_dev *hdev);
634 int (*close)(struct hci_dev *hdev);
635 int (*flush)(struct hci_dev *hdev);
636 int (*setup)(struct hci_dev *hdev);
637 int (*shutdown)(struct hci_dev *hdev);
638 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
639 void (*notify)(struct hci_dev *hdev, unsigned int evt);
640 void (*hw_error)(struct hci_dev *hdev, u8 code);
641 int (*post_init)(struct hci_dev *hdev);
642 int (*set_diag)(struct hci_dev *hdev, bool enable);
643 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
644 void (*cmd_timeout)(struct hci_dev *hdev);
645 void (*reset)(struct hci_dev *hdev);
646 bool (*wakeup)(struct hci_dev *hdev);
647 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
648 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
649 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
650 struct bt_codec *codec, __u8 *vnd_len,
651 __u8 **vnd_data);
652};
653
654#define HCI_PHY_HANDLE(handle) (handle & 0xff)
655
656enum conn_reasons {
657 CONN_REASON_PAIR_DEVICE,
658 CONN_REASON_L2CAP_CHAN,
659 CONN_REASON_SCO_CONNECT,
660 CONN_REASON_ISO_CONNECT,
661};
662
663struct hci_conn {
664 struct list_head list;
665
666 atomic_t refcnt;
667
668 bdaddr_t dst;
669 __u8 dst_type;
670 bdaddr_t src;
671 __u8 src_type;
672 bdaddr_t init_addr;
673 __u8 init_addr_type;
674 bdaddr_t resp_addr;
675 __u8 resp_addr_type;
676 __u8 adv_instance;
677 __u16 handle;
678 __u16 sync_handle;
679 __u16 state;
680 __u16 mtu;
681 __u8 mode;
682 __u8 type;
683 __u8 role;
684 bool out;
685 __u8 attempt;
686 __u8 dev_class[3];
687 __u8 features[HCI_MAX_PAGES][8];
688 __u16 pkt_type;
689 __u16 link_policy;
690 __u8 key_type;
691 __u8 auth_type;
692 __u8 sec_level;
693 __u8 pending_sec_level;
694 __u8 pin_length;
695 __u8 enc_key_size;
696 __u8 io_capability;
697 __u32 passkey_notify;
698 __u8 passkey_entered;
699 __u16 disc_timeout;
700 __u16 conn_timeout;
701 __u16 setting;
702 __u16 auth_payload_timeout;
703 __u16 le_conn_min_interval;
704 __u16 le_conn_max_interval;
705 __u16 le_conn_interval;
706 __u16 le_conn_latency;
707 __u16 le_supv_timeout;
708 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
709 __u8 le_adv_data_len;
710 __u8 le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
711 __u16 le_per_adv_data_len;
712 __u16 le_per_adv_data_offset;
713 __u8 le_adv_phy;
714 __u8 le_adv_sec_phy;
715 __u8 le_tx_phy;
716 __u8 le_rx_phy;
717 __s8 rssi;
718 __s8 tx_power;
719 __s8 max_tx_power;
720 struct bt_iso_qos iso_qos;
721 unsigned long flags;
722
723 enum conn_reasons conn_reason;
724 __u8 abort_reason;
725
726 __u32 clock;
727 __u16 clock_accuracy;
728
729 unsigned long conn_info_timestamp;
730
731 __u8 remote_cap;
732 __u8 remote_auth;
733 __u8 remote_id;
734
735 unsigned int sent;
736
737 struct sk_buff_head data_q;
738 struct list_head chan_list;
739
740 struct delayed_work disc_work;
741 struct delayed_work auto_accept_work;
742 struct delayed_work idle_work;
743 struct delayed_work le_conn_timeout;
744
745 struct device dev;
746 struct dentry *debugfs;
747
748 struct hci_dev *hdev;
749 void *l2cap_data;
750 void *sco_data;
751 void *iso_data;
752
753 struct list_head link_list;
754 struct hci_conn *parent;
755 struct hci_link *link;
756
757 struct bt_codec codec;
758
759 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
760 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
761 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
762
763 void (*cleanup)(struct hci_conn *conn);
764};
765
766struct hci_link {
767 struct list_head list;
768 struct hci_conn *conn;
769};
770
771struct hci_chan {
772 struct list_head list;
773 __u16 handle;
774 struct hci_conn *conn;
775 struct sk_buff_head data_q;
776 unsigned int sent;
777 __u8 state;
778};
779
780struct hci_conn_params {
781 struct list_head list;
782 struct list_head action;
783
784 bdaddr_t addr;
785 u8 addr_type;
786
787 u16 conn_min_interval;
788 u16 conn_max_interval;
789 u16 conn_latency;
790 u16 supervision_timeout;
791
792 enum {
793 HCI_AUTO_CONN_DISABLED,
794 HCI_AUTO_CONN_REPORT,
795 HCI_AUTO_CONN_DIRECT,
796 HCI_AUTO_CONN_ALWAYS,
797 HCI_AUTO_CONN_LINK_LOSS,
798 HCI_AUTO_CONN_EXPLICIT,
799 } auto_connect;
800
801 struct hci_conn *conn;
802 bool explicit_connect;
803 /* Accessed without hdev->lock: */
804 hci_conn_flags_t flags;
805 u8 privacy_mode;
806};
807
808extern struct list_head hci_dev_list;
809extern struct list_head hci_cb_list;
810extern rwlock_t hci_dev_list_lock;
811extern struct mutex hci_cb_list_lock;
812
813#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
814#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
815#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
816#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
817#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
818#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
819#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
820
821#define hci_dev_clear_volatile_flags(hdev) \
822 do { \
823 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
824 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
825 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
826 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
827 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
828 } while (0)
829
830#define hci_dev_le_state_simultaneous(hdev) \
831 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
832 (hdev->le_states[4] & 0x08) && /* Central */ \
833 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
834 (hdev->le_states[3] & 0x10)) /* Simultaneous */
835
836/* ----- HCI interface to upper protocols ----- */
837int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
838int l2cap_disconn_ind(struct hci_conn *hcon);
839void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
840
841#if IS_ENABLED(CONFIG_BT_BREDR)
842int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
843void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
844#else
845static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
846 __u8 *flags)
847{
848 return 0;
849}
850
851static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
852{
853}
854#endif
855
856#if IS_ENABLED(CONFIG_BT_LE)
857int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
858void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
859#else
860static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
861 __u8 *flags)
862{
863 return 0;
864}
865static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
866 u16 flags)
867{
868}
869#endif
870
871/* ----- Inquiry cache ----- */
872#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
873#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
874
875static inline void discovery_init(struct hci_dev *hdev)
876{
877 hdev->discovery.state = DISCOVERY_STOPPED;
878 INIT_LIST_HEAD(&hdev->discovery.all);
879 INIT_LIST_HEAD(&hdev->discovery.unknown);
880 INIT_LIST_HEAD(&hdev->discovery.resolve);
881 hdev->discovery.report_invalid_rssi = true;
882 hdev->discovery.rssi = HCI_RSSI_INVALID;
883}
884
885static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
886{
887 hdev->discovery.result_filtering = false;
888 hdev->discovery.report_invalid_rssi = true;
889 hdev->discovery.rssi = HCI_RSSI_INVALID;
890 hdev->discovery.uuid_count = 0;
891 kfree(hdev->discovery.uuids);
892 hdev->discovery.uuids = NULL;
893 hdev->discovery.scan_start = 0;
894 hdev->discovery.scan_duration = 0;
895}
896
897bool hci_discovery_active(struct hci_dev *hdev);
898
899void hci_discovery_set_state(struct hci_dev *hdev, int state);
900
901static inline int inquiry_cache_empty(struct hci_dev *hdev)
902{
903 return list_empty(&hdev->discovery.all);
904}
905
906static inline long inquiry_cache_age(struct hci_dev *hdev)
907{
908 struct discovery_state *c = &hdev->discovery;
909 return jiffies - c->timestamp;
910}
911
912static inline long inquiry_entry_age(struct inquiry_entry *e)
913{
914 return jiffies - e->timestamp;
915}
916
917struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
918 bdaddr_t *bdaddr);
919struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
920 bdaddr_t *bdaddr);
921struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
922 bdaddr_t *bdaddr,
923 int state);
924void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
925 struct inquiry_entry *ie);
926u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
927 bool name_known);
928void hci_inquiry_cache_flush(struct hci_dev *hdev);
929
930/* ----- HCI Connections ----- */
931enum {
932 HCI_CONN_AUTH_PEND,
933 HCI_CONN_ENCRYPT_PEND,
934 HCI_CONN_RSWITCH_PEND,
935 HCI_CONN_MODE_CHANGE_PEND,
936 HCI_CONN_SCO_SETUP_PEND,
937 HCI_CONN_MGMT_CONNECTED,
938 HCI_CONN_SSP_ENABLED,
939 HCI_CONN_SC_ENABLED,
940 HCI_CONN_AES_CCM,
941 HCI_CONN_POWER_SAVE,
942 HCI_CONN_FLUSH_KEY,
943 HCI_CONN_ENCRYPT,
944 HCI_CONN_AUTH,
945 HCI_CONN_SECURE,
946 HCI_CONN_FIPS,
947 HCI_CONN_STK_ENCRYPT,
948 HCI_CONN_AUTH_INITIATOR,
949 HCI_CONN_DROP,
950 HCI_CONN_CANCEL,
951 HCI_CONN_PARAM_REMOVAL_PEND,
952 HCI_CONN_NEW_LINK_KEY,
953 HCI_CONN_SCANNING,
954 HCI_CONN_AUTH_FAILURE,
955 HCI_CONN_PER_ADV,
956 HCI_CONN_BIG_CREATED,
957 HCI_CONN_CREATE_CIS,
958 HCI_CONN_BIG_SYNC,
959 HCI_CONN_BIG_SYNC_FAILED,
960 HCI_CONN_PA_SYNC,
961 HCI_CONN_PA_SYNC_FAILED,
962};
963
964static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
965{
966 struct hci_dev *hdev = conn->hdev;
967 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
968 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
969}
970
971static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
972{
973 struct hci_dev *hdev = conn->hdev;
974 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
975 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
976}
977
978static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
979{
980 struct hci_conn_hash *h = &hdev->conn_hash;
981 list_add_tail_rcu(&c->list, &h->list);
982 switch (c->type) {
983 case ACL_LINK:
984 h->acl_num++;
985 break;
986 case LE_LINK:
987 h->le_num++;
988 if (c->role == HCI_ROLE_SLAVE)
989 h->le_num_peripheral++;
990 break;
991 case SCO_LINK:
992 case ESCO_LINK:
993 h->sco_num++;
994 break;
995 case ISO_LINK:
996 h->iso_num++;
997 break;
998 }
999}
1000
1001static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1002{
1003 struct hci_conn_hash *h = &hdev->conn_hash;
1004
1005 list_del_rcu(&c->list);
1006 synchronize_rcu();
1007
1008 switch (c->type) {
1009 case ACL_LINK:
1010 h->acl_num--;
1011 break;
1012 case LE_LINK:
1013 h->le_num--;
1014 if (c->role == HCI_ROLE_SLAVE)
1015 h->le_num_peripheral--;
1016 break;
1017 case SCO_LINK:
1018 case ESCO_LINK:
1019 h->sco_num--;
1020 break;
1021 case ISO_LINK:
1022 h->iso_num--;
1023 break;
1024 }
1025}
1026
1027static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1028{
1029 struct hci_conn_hash *h = &hdev->conn_hash;
1030 switch (type) {
1031 case ACL_LINK:
1032 return h->acl_num;
1033 case LE_LINK:
1034 return h->le_num;
1035 case SCO_LINK:
1036 case ESCO_LINK:
1037 return h->sco_num;
1038 case ISO_LINK:
1039 return h->iso_num;
1040 default:
1041 return 0;
1042 }
1043}
1044
1045static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1046{
1047 struct hci_conn_hash *c = &hdev->conn_hash;
1048
1049 return c->acl_num + c->sco_num + c->le_num + c->iso_num;
1050}
1051
1052static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
1053{
1054 struct hci_conn_hash *h = &hdev->conn_hash;
1055 struct hci_conn *c;
1056
1057 rcu_read_lock();
1058
1059 list_for_each_entry_rcu(c, &h->list, list) {
1060 if (c == conn) {
1061 rcu_read_unlock();
1062 return true;
1063 }
1064 }
1065 rcu_read_unlock();
1066
1067 return false;
1068}
1069
1070static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1071{
1072 struct hci_conn_hash *h = &hdev->conn_hash;
1073 struct hci_conn *c;
1074 __u8 type = INVALID_LINK;
1075
1076 rcu_read_lock();
1077
1078 list_for_each_entry_rcu(c, &h->list, list) {
1079 if (c->handle == handle) {
1080 type = c->type;
1081 break;
1082 }
1083 }
1084
1085 rcu_read_unlock();
1086
1087 return type;
1088}
1089
1090static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1091 bdaddr_t *ba, __u8 bis)
1092{
1093 struct hci_conn_hash *h = &hdev->conn_hash;
1094 struct hci_conn *c;
1095
1096 rcu_read_lock();
1097
1098 list_for_each_entry_rcu(c, &h->list, list) {
1099 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1100 continue;
1101
1102 if (c->iso_qos.bcast.bis == bis) {
1103 rcu_read_unlock();
1104 return c;
1105 }
1106 }
1107 rcu_read_unlock();
1108
1109 return NULL;
1110}
1111
1112static inline struct hci_conn *
1113hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1114 bdaddr_t *ba,
1115 __u8 big, __u8 bis)
1116{
1117 struct hci_conn_hash *h = &hdev->conn_hash;
1118 struct hci_conn *c;
1119
1120 rcu_read_lock();
1121
1122 list_for_each_entry_rcu(c, &h->list, list) {
1123 if (bacmp(&c->dst, ba) || c->type != ISO_LINK ||
1124 !test_bit(HCI_CONN_PER_ADV, &c->flags))
1125 continue;
1126
1127 if (c->iso_qos.bcast.big == big &&
1128 c->iso_qos.bcast.bis == bis) {
1129 rcu_read_unlock();
1130 return c;
1131 }
1132 }
1133 rcu_read_unlock();
1134
1135 return NULL;
1136}
1137
1138static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1139 __u16 handle)
1140{
1141 struct hci_conn_hash *h = &hdev->conn_hash;
1142 struct hci_conn *c;
1143
1144 rcu_read_lock();
1145
1146 list_for_each_entry_rcu(c, &h->list, list) {
1147 if (c->handle == handle) {
1148 rcu_read_unlock();
1149 return c;
1150 }
1151 }
1152 rcu_read_unlock();
1153
1154 return NULL;
1155}
1156
1157static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1158 __u8 type, bdaddr_t *ba)
1159{
1160 struct hci_conn_hash *h = &hdev->conn_hash;
1161 struct hci_conn *c;
1162
1163 rcu_read_lock();
1164
1165 list_for_each_entry_rcu(c, &h->list, list) {
1166 if (c->type == type && !bacmp(&c->dst, ba)) {
1167 rcu_read_unlock();
1168 return c;
1169 }
1170 }
1171
1172 rcu_read_unlock();
1173
1174 return NULL;
1175}
1176
1177static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1178 bdaddr_t *ba,
1179 __u8 ba_type)
1180{
1181 struct hci_conn_hash *h = &hdev->conn_hash;
1182 struct hci_conn *c;
1183
1184 rcu_read_lock();
1185
1186 list_for_each_entry_rcu(c, &h->list, list) {
1187 if (c->type != LE_LINK)
1188 continue;
1189
1190 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1191 rcu_read_unlock();
1192 return c;
1193 }
1194 }
1195
1196 rcu_read_unlock();
1197
1198 return NULL;
1199}
1200
1201static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1202 bdaddr_t *ba,
1203 __u8 ba_type,
1204 __u8 cig,
1205 __u8 id)
1206{
1207 struct hci_conn_hash *h = &hdev->conn_hash;
1208 struct hci_conn *c;
1209
1210 rcu_read_lock();
1211
1212 list_for_each_entry_rcu(c, &h->list, list) {
1213 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1214 continue;
1215
1216 /* Match CIG ID if set */
1217 if (cig != c->iso_qos.ucast.cig)
1218 continue;
1219
1220 /* Match CIS ID if set */
1221 if (id != c->iso_qos.ucast.cis)
1222 continue;
1223
1224 /* Match destination address if set */
1225 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1226 rcu_read_unlock();
1227 return c;
1228 }
1229 }
1230
1231 rcu_read_unlock();
1232
1233 return NULL;
1234}
1235
1236static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1237 __u8 handle)
1238{
1239 struct hci_conn_hash *h = &hdev->conn_hash;
1240 struct hci_conn *c;
1241
1242 rcu_read_lock();
1243
1244 list_for_each_entry_rcu(c, &h->list, list) {
1245 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1246 continue;
1247
1248 if (handle == c->iso_qos.ucast.cig) {
1249 rcu_read_unlock();
1250 return c;
1251 }
1252 }
1253
1254 rcu_read_unlock();
1255
1256 return NULL;
1257}
1258
1259static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1260 __u8 handle)
1261{
1262 struct hci_conn_hash *h = &hdev->conn_hash;
1263 struct hci_conn *c;
1264
1265 rcu_read_lock();
1266
1267 list_for_each_entry_rcu(c, &h->list, list) {
1268 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1269 continue;
1270
1271 if (handle == c->iso_qos.bcast.big) {
1272 rcu_read_unlock();
1273 return c;
1274 }
1275 }
1276
1277 rcu_read_unlock();
1278
1279 return NULL;
1280}
1281
1282static inline struct hci_conn *
1283hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state)
1284{
1285 struct hci_conn_hash *h = &hdev->conn_hash;
1286 struct hci_conn *c;
1287
1288 rcu_read_lock();
1289
1290 list_for_each_entry_rcu(c, &h->list, list) {
1291 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1292 c->state != state)
1293 continue;
1294
1295 if (handle == c->iso_qos.bcast.big) {
1296 rcu_read_unlock();
1297 return c;
1298 }
1299 }
1300
1301 rcu_read_unlock();
1302
1303 return NULL;
1304}
1305
1306static inline struct hci_conn *
1307hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1308{
1309 struct hci_conn_hash *h = &hdev->conn_hash;
1310 struct hci_conn *c;
1311
1312 rcu_read_lock();
1313
1314 list_for_each_entry_rcu(c, &h->list, list) {
1315 if (c->type != ISO_LINK ||
1316 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1317 continue;
1318
1319 if (c->iso_qos.bcast.big == big) {
1320 rcu_read_unlock();
1321 return c;
1322 }
1323 }
1324 rcu_read_unlock();
1325
1326 return NULL;
1327}
1328
1329static inline struct hci_conn *
1330hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1331{
1332 struct hci_conn_hash *h = &hdev->conn_hash;
1333 struct hci_conn *c;
1334
1335 rcu_read_lock();
1336
1337 list_for_each_entry_rcu(c, &h->list, list) {
1338 if (c->type != ISO_LINK)
1339 continue;
1340
1341 if (c->sync_handle == sync_handle) {
1342 rcu_read_unlock();
1343 return c;
1344 }
1345 }
1346 rcu_read_unlock();
1347
1348 return NULL;
1349}
1350
1351static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1352 __u8 type, __u16 state)
1353{
1354 struct hci_conn_hash *h = &hdev->conn_hash;
1355 struct hci_conn *c;
1356
1357 rcu_read_lock();
1358
1359 list_for_each_entry_rcu(c, &h->list, list) {
1360 if (c->type == type && c->state == state) {
1361 rcu_read_unlock();
1362 return c;
1363 }
1364 }
1365
1366 rcu_read_unlock();
1367
1368 return NULL;
1369}
1370
1371typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1372static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1373 hci_conn_func_t func, __u8 type,
1374 __u16 state, void *data)
1375{
1376 struct hci_conn_hash *h = &hdev->conn_hash;
1377 struct hci_conn *c;
1378
1379 if (!func)
1380 return;
1381
1382 rcu_read_lock();
1383
1384 list_for_each_entry_rcu(c, &h->list, list) {
1385 if (c->type == type && c->state == state)
1386 func(c, data);
1387 }
1388
1389 rcu_read_unlock();
1390}
1391
1392static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1393 hci_conn_func_t func, __u8 type,
1394 __u8 flag, void *data)
1395{
1396 struct hci_conn_hash *h = &hdev->conn_hash;
1397 struct hci_conn *c;
1398
1399 if (!func)
1400 return;
1401
1402 rcu_read_lock();
1403
1404 list_for_each_entry_rcu(c, &h->list, list) {
1405 if (c->type == type && test_bit(flag, &c->flags))
1406 func(c, data);
1407 }
1408
1409 rcu_read_unlock();
1410}
1411
1412static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1413{
1414 struct hci_conn_hash *h = &hdev->conn_hash;
1415 struct hci_conn *c;
1416
1417 rcu_read_lock();
1418
1419 list_for_each_entry_rcu(c, &h->list, list) {
1420 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1421 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1422 rcu_read_unlock();
1423 return c;
1424 }
1425 }
1426
1427 rcu_read_unlock();
1428
1429 return NULL;
1430}
1431
1432/* Returns true if an le connection is in the scanning state */
1433static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1434{
1435 struct hci_conn_hash *h = &hdev->conn_hash;
1436 struct hci_conn *c;
1437
1438 rcu_read_lock();
1439
1440 list_for_each_entry_rcu(c, &h->list, list) {
1441 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1442 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1443 rcu_read_unlock();
1444 return true;
1445 }
1446 }
1447
1448 rcu_read_unlock();
1449
1450 return false;
1451}
1452
1453int hci_disconnect(struct hci_conn *conn, __u8 reason);
1454bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1455void hci_sco_setup(struct hci_conn *conn, __u8 status);
1456bool hci_iso_setup_path(struct hci_conn *conn);
1457int hci_le_create_cis_pending(struct hci_dev *hdev);
1458int hci_conn_check_create_cis(struct hci_conn *conn);
1459
1460struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1461 u8 role, u16 handle);
1462struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1463 bdaddr_t *dst, u8 role);
1464void hci_conn_del(struct hci_conn *conn);
1465void hci_conn_hash_flush(struct hci_dev *hdev);
1466
1467struct hci_chan *hci_chan_create(struct hci_conn *conn);
1468void hci_chan_del(struct hci_chan *chan);
1469void hci_chan_list_flush(struct hci_conn *conn);
1470struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1471
1472struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1473 u8 dst_type, u8 sec_level,
1474 u16 conn_timeout,
1475 enum conn_reasons conn_reason);
1476struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1477 u8 dst_type, bool dst_resolved, u8 sec_level,
1478 u16 conn_timeout, u8 role, u8 phy, u8 sec_phy);
1479void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1480struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1481 u8 sec_level, u8 auth_type,
1482 enum conn_reasons conn_reason, u16 timeout);
1483struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1484 __u16 setting, struct bt_codec *codec,
1485 u16 timeout);
1486struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1487 __u8 dst_type, struct bt_iso_qos *qos);
1488struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1489 struct bt_iso_qos *qos,
1490 __u8 base_len, __u8 *base);
1491struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1492 __u8 dst_type, struct bt_iso_qos *qos);
1493struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1494 __u8 dst_type, struct bt_iso_qos *qos,
1495 __u8 data_len, __u8 *data);
1496struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
1497 __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
1498int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1499 struct bt_iso_qos *qos,
1500 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1501int hci_conn_check_link_mode(struct hci_conn *conn);
1502int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1503int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1504 bool initiator);
1505int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1506
1507void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1508
1509void hci_conn_failed(struct hci_conn *conn, u8 status);
1510u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1511
1512/*
1513 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1514 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1515 * working or anything else. They just guarantee that the object is available
1516 * and can be dereferenced. So you can use its locks, local variables and any
1517 * other constant data.
1518 * Before accessing runtime data, you _must_ lock the object and then check that
1519 * it is still running. As soon as you release the locks, the connection might
1520 * get dropped, though.
1521 *
1522 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1523 * how long the underlying connection is held. So every channel that runs on the
1524 * hci_conn object calls this to prevent the connection from disappearing. As
1525 * long as you hold a device, you must also guarantee that you have a valid
1526 * reference to the device via hci_conn_get() (or the initial reference from
1527 * hci_conn_add()).
1528 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1529 * break because nobody cares for that. But this means, we cannot use
1530 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1531 */
1532
1533static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1534{
1535 get_device(&conn->dev);
1536 return conn;
1537}
1538
1539static inline void hci_conn_put(struct hci_conn *conn)
1540{
1541 put_device(&conn->dev);
1542}
1543
1544static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1545{
1546 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1547
1548 atomic_inc(&conn->refcnt);
1549 cancel_delayed_work(&conn->disc_work);
1550
1551 return conn;
1552}
1553
1554static inline void hci_conn_drop(struct hci_conn *conn)
1555{
1556 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1557
1558 if (atomic_dec_and_test(&conn->refcnt)) {
1559 unsigned long timeo;
1560
1561 switch (conn->type) {
1562 case ACL_LINK:
1563 case LE_LINK:
1564 cancel_delayed_work(&conn->idle_work);
1565 if (conn->state == BT_CONNECTED) {
1566 timeo = conn->disc_timeout;
1567 if (!conn->out)
1568 timeo *= 2;
1569 } else {
1570 timeo = 0;
1571 }
1572 break;
1573
1574 default:
1575 timeo = 0;
1576 break;
1577 }
1578
1579 cancel_delayed_work(&conn->disc_work);
1580 queue_delayed_work(conn->hdev->workqueue,
1581 &conn->disc_work, timeo);
1582 }
1583}
1584
1585/* ----- HCI Devices ----- */
1586static inline void hci_dev_put(struct hci_dev *d)
1587{
1588 BT_DBG("%s orig refcnt %d", d->name,
1589 kref_read(&d->dev.kobj.kref));
1590
1591 put_device(&d->dev);
1592}
1593
1594static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1595{
1596 BT_DBG("%s orig refcnt %d", d->name,
1597 kref_read(&d->dev.kobj.kref));
1598
1599 get_device(&d->dev);
1600 return d;
1601}
1602
1603#define hci_dev_lock(d) mutex_lock(&d->lock)
1604#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1605
1606#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1607#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1608
1609static inline void *hci_get_drvdata(struct hci_dev *hdev)
1610{
1611 return dev_get_drvdata(&hdev->dev);
1612}
1613
1614static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1615{
1616 dev_set_drvdata(&hdev->dev, data);
1617}
1618
1619static inline void *hci_get_priv(struct hci_dev *hdev)
1620{
1621 return (char *)hdev + sizeof(*hdev);
1622}
1623
1624struct hci_dev *hci_dev_get(int index);
1625struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1626
1627struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1628
1629static inline struct hci_dev *hci_alloc_dev(void)
1630{
1631 return hci_alloc_dev_priv(0);
1632}
1633
1634void hci_free_dev(struct hci_dev *hdev);
1635int hci_register_dev(struct hci_dev *hdev);
1636void hci_unregister_dev(struct hci_dev *hdev);
1637void hci_release_dev(struct hci_dev *hdev);
1638int hci_register_suspend_notifier(struct hci_dev *hdev);
1639int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1640int hci_suspend_dev(struct hci_dev *hdev);
1641int hci_resume_dev(struct hci_dev *hdev);
1642int hci_reset_dev(struct hci_dev *hdev);
1643int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1644int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1645__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1646__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1647
1648static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1649{
1650#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1651 hdev->msft_opcode = opcode;
1652#endif
1653}
1654
1655static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1656{
1657#if IS_ENABLED(CONFIG_BT_AOSPEXT)
1658 hdev->aosp_capable = true;
1659#endif
1660}
1661
1662static inline void hci_devcd_setup(struct hci_dev *hdev)
1663{
1664#ifdef CONFIG_DEV_COREDUMP
1665 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1666 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1667 skb_queue_head_init(&hdev->dump.dump_q);
1668#endif
1669}
1670
1671int hci_dev_open(__u16 dev);
1672int hci_dev_close(__u16 dev);
1673int hci_dev_do_close(struct hci_dev *hdev);
1674int hci_dev_reset(__u16 dev);
1675int hci_dev_reset_stat(__u16 dev);
1676int hci_dev_cmd(unsigned int cmd, void __user *arg);
1677int hci_get_dev_list(void __user *arg);
1678int hci_get_dev_info(void __user *arg);
1679int hci_get_conn_list(void __user *arg);
1680int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1681int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1682int hci_inquiry(void __user *arg);
1683
1684struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1685 bdaddr_t *bdaddr, u8 type);
1686struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1687 struct list_head *list, bdaddr_t *bdaddr,
1688 u8 type);
1689struct bdaddr_list_with_flags *
1690hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1691 u8 type);
1692int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1693int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1694 u8 type, u8 *peer_irk, u8 *local_irk);
1695int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1696 u8 type, u32 flags);
1697int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1698int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1699 u8 type);
1700int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1701 u8 type);
1702void hci_bdaddr_list_clear(struct list_head *list);
1703
1704struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1705 bdaddr_t *addr, u8 addr_type);
1706struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1707 bdaddr_t *addr, u8 addr_type);
1708void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1709void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1710void hci_conn_params_free(struct hci_conn_params *param);
1711
1712void hci_pend_le_list_del_init(struct hci_conn_params *param);
1713void hci_pend_le_list_add(struct hci_conn_params *param,
1714 struct list_head *list);
1715struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1716 bdaddr_t *addr,
1717 u8 addr_type);
1718
1719void hci_uuids_clear(struct hci_dev *hdev);
1720
1721void hci_link_keys_clear(struct hci_dev *hdev);
1722struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1723struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1724 bdaddr_t *bdaddr, u8 *val, u8 type,
1725 u8 pin_len, bool *persistent);
1726struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1727 u8 addr_type, u8 type, u8 authenticated,
1728 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1729struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1730 u8 addr_type, u8 role);
1731int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1732void hci_smp_ltks_clear(struct hci_dev *hdev);
1733int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1734
1735struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1736struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1737 u8 addr_type);
1738struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1739 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1740void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1741bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1742void hci_blocked_keys_clear(struct hci_dev *hdev);
1743void hci_smp_irks_clear(struct hci_dev *hdev);
1744
1745bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1746
1747void hci_remote_oob_data_clear(struct hci_dev *hdev);
1748struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1749 bdaddr_t *bdaddr, u8 bdaddr_type);
1750int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1751 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1752 u8 *hash256, u8 *rand256);
1753int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1754 u8 bdaddr_type);
1755
1756void hci_adv_instances_clear(struct hci_dev *hdev);
1757struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1758struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1759struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1760 u32 flags, u16 adv_data_len, u8 *adv_data,
1761 u16 scan_rsp_len, u8 *scan_rsp_data,
1762 u16 timeout, u16 duration, s8 tx_power,
1763 u32 min_interval, u32 max_interval,
1764 u8 mesh_handle);
1765struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1766 u32 flags, u8 data_len, u8 *data,
1767 u32 min_interval, u32 max_interval);
1768int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1769 u16 adv_data_len, u8 *adv_data,
1770 u16 scan_rsp_len, u8 *scan_rsp_data);
1771int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1772void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1773u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1774bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1775
1776void hci_adv_monitors_clear(struct hci_dev *hdev);
1777void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1778int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1779int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1780int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1781bool hci_is_adv_monitoring(struct hci_dev *hdev);
1782int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1783
1784void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1785
1786void hci_init_sysfs(struct hci_dev *hdev);
1787void hci_conn_init_sysfs(struct hci_conn *conn);
1788void hci_conn_add_sysfs(struct hci_conn *conn);
1789void hci_conn_del_sysfs(struct hci_conn *conn);
1790
1791#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1792#define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1793
1794/* ----- LMP capabilities ----- */
1795#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1796#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1797#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1798#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1799#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1800#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1801#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1802#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1803#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1804#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1805#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1806#define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1807#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1808#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1809#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1810#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1811#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1812#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1813#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1814#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1815#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1816#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1817#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1818#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1819
1820/* ----- Extended LMP capabilities ----- */
1821#define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1822#define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1823#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1824#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1825#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1826#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1827
1828/* ----- Host capabilities ----- */
1829#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1830#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1831#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1832#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1833
1834#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1835 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1836#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1837 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1838#define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1839 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1840#define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1841 !adv->rpa_expired)
1842
1843#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1844 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1845
1846#define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1847
1848#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1849 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1850
1851#define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1852 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1853 &(dev)->quirks))
1854
1855#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1856 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1857
1858#define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1859
1860/* Use LL Privacy based address resolution if supported */
1861#define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1862 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1863
1864#define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1865 (hdev->commands[39] & 0x04))
1866
1867#define read_key_size_capable(dev) \
1868 ((dev)->commands[20] & 0x10 && \
1869 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
1870
1871/* Use enhanced synchronous connection if command is supported and its quirk
1872 * has not been set.
1873 */
1874#define enhanced_sync_conn_capable(dev) \
1875 (((dev)->commands[29] & 0x08) && \
1876 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1877
1878/* Use ext scanning if set ext scan param and ext scan enable is supported */
1879#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1880 ((dev)->commands[37] & 0x40) && \
1881 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1882
1883/* Use ext create connection if command is supported */
1884#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1885
1886/* Extended advertising support */
1887#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1888
1889/* Maximum advertising length */
1890#define max_adv_len(dev) \
1891 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1892
1893/* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1894 *
1895 * C24: Mandatory if the LE Controller supports Connection State and either
1896 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1897 */
1898#define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1899 ext_adv_capable(dev))
1900
1901/* Periodic advertising support */
1902#define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1903
1904/* CIS Master/Slave and BIS support */
1905#define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1906#define cis_capable(dev) \
1907 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1908#define cis_central_capable(dev) \
1909 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1910#define cis_peripheral_capable(dev) \
1911 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1912#define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1913#define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1914
1915#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1916 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1917
1918/* ----- HCI protocols ----- */
1919#define HCI_PROTO_DEFER 0x01
1920
1921static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1922 __u8 type, __u8 *flags)
1923{
1924 switch (type) {
1925 case ACL_LINK:
1926 return l2cap_connect_ind(hdev, bdaddr);
1927
1928 case SCO_LINK:
1929 case ESCO_LINK:
1930 return sco_connect_ind(hdev, bdaddr, flags);
1931
1932 case ISO_LINK:
1933 return iso_connect_ind(hdev, bdaddr, flags);
1934
1935 default:
1936 BT_ERR("unknown link type %d", type);
1937 return -EINVAL;
1938 }
1939}
1940
1941static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1942{
1943 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1944 return HCI_ERROR_REMOTE_USER_TERM;
1945
1946 return l2cap_disconn_ind(conn);
1947}
1948
1949/* ----- HCI callbacks ----- */
1950struct hci_cb {
1951 struct list_head list;
1952
1953 char *name;
1954
1955 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1956 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1957 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1958 __u8 encrypt);
1959 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1960 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1961};
1962
1963static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1964{
1965 struct hci_cb *cb;
1966
1967 mutex_lock(&hci_cb_list_lock);
1968 list_for_each_entry(cb, &hci_cb_list, list) {
1969 if (cb->connect_cfm)
1970 cb->connect_cfm(conn, status);
1971 }
1972 mutex_unlock(&hci_cb_list_lock);
1973
1974 if (conn->connect_cfm_cb)
1975 conn->connect_cfm_cb(conn, status);
1976}
1977
1978static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1979{
1980 struct hci_cb *cb;
1981
1982 mutex_lock(&hci_cb_list_lock);
1983 list_for_each_entry(cb, &hci_cb_list, list) {
1984 if (cb->disconn_cfm)
1985 cb->disconn_cfm(conn, reason);
1986 }
1987 mutex_unlock(&hci_cb_list_lock);
1988
1989 if (conn->disconn_cfm_cb)
1990 conn->disconn_cfm_cb(conn, reason);
1991}
1992
1993static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1994{
1995 struct hci_cb *cb;
1996 __u8 encrypt;
1997
1998 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1999 return;
2000
2001 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2002
2003 mutex_lock(&hci_cb_list_lock);
2004 list_for_each_entry(cb, &hci_cb_list, list) {
2005 if (cb->security_cfm)
2006 cb->security_cfm(conn, status, encrypt);
2007 }
2008 mutex_unlock(&hci_cb_list_lock);
2009
2010 if (conn->security_cfm_cb)
2011 conn->security_cfm_cb(conn, status);
2012}
2013
2014static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2015{
2016 struct hci_cb *cb;
2017 __u8 encrypt;
2018
2019 if (conn->state == BT_CONFIG) {
2020 if (!status)
2021 conn->state = BT_CONNECTED;
2022
2023 hci_connect_cfm(conn, status);
2024 hci_conn_drop(conn);
2025 return;
2026 }
2027
2028 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2029 encrypt = 0x00;
2030 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2031 encrypt = 0x02;
2032 else
2033 encrypt = 0x01;
2034
2035 if (!status) {
2036 if (conn->sec_level == BT_SECURITY_SDP)
2037 conn->sec_level = BT_SECURITY_LOW;
2038
2039 if (conn->pending_sec_level > conn->sec_level)
2040 conn->sec_level = conn->pending_sec_level;
2041 }
2042
2043 mutex_lock(&hci_cb_list_lock);
2044 list_for_each_entry(cb, &hci_cb_list, list) {
2045 if (cb->security_cfm)
2046 cb->security_cfm(conn, status, encrypt);
2047 }
2048 mutex_unlock(&hci_cb_list_lock);
2049
2050 if (conn->security_cfm_cb)
2051 conn->security_cfm_cb(conn, status);
2052}
2053
2054static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2055{
2056 struct hci_cb *cb;
2057
2058 mutex_lock(&hci_cb_list_lock);
2059 list_for_each_entry(cb, &hci_cb_list, list) {
2060 if (cb->key_change_cfm)
2061 cb->key_change_cfm(conn, status);
2062 }
2063 mutex_unlock(&hci_cb_list_lock);
2064}
2065
2066static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2067 __u8 role)
2068{
2069 struct hci_cb *cb;
2070
2071 mutex_lock(&hci_cb_list_lock);
2072 list_for_each_entry(cb, &hci_cb_list, list) {
2073 if (cb->role_switch_cfm)
2074 cb->role_switch_cfm(conn, status, role);
2075 }
2076 mutex_unlock(&hci_cb_list_lock);
2077}
2078
2079static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2080{
2081 if (addr_type != ADDR_LE_DEV_RANDOM)
2082 return false;
2083
2084 if ((bdaddr->b[5] & 0xc0) == 0x40)
2085 return true;
2086
2087 return false;
2088}
2089
2090static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2091{
2092 if (addr_type == ADDR_LE_DEV_PUBLIC)
2093 return true;
2094
2095 /* Check for Random Static address type */
2096 if ((addr->b[5] & 0xc0) == 0xc0)
2097 return true;
2098
2099 return false;
2100}
2101
2102static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2103 bdaddr_t *bdaddr, u8 addr_type)
2104{
2105 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2106 return NULL;
2107
2108 return hci_find_irk_by_rpa(hdev, bdaddr);
2109}
2110
2111static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2112 u16 to_multiplier)
2113{
2114 u16 max_latency;
2115
2116 if (min > max || min < 6 || max > 3200)
2117 return -EINVAL;
2118
2119 if (to_multiplier < 10 || to_multiplier > 3200)
2120 return -EINVAL;
2121
2122 if (max >= to_multiplier * 8)
2123 return -EINVAL;
2124
2125 max_latency = (to_multiplier * 4 / max) - 1;
2126 if (latency > 499 || latency > max_latency)
2127 return -EINVAL;
2128
2129 return 0;
2130}
2131
2132int hci_register_cb(struct hci_cb *hcb);
2133int hci_unregister_cb(struct hci_cb *hcb);
2134
2135int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2136 const void *param);
2137
2138int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2139 const void *param);
2140void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2141void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2142void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2143
2144void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2145void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2146
2147u32 hci_conn_get_phy(struct hci_conn *conn);
2148
2149/* ----- HCI Sockets ----- */
2150void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2151void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2152 int flag, struct sock *skip_sk);
2153void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2154void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2155 void *data, u16 data_len, ktime_t tstamp,
2156 int flag, struct sock *skip_sk);
2157
2158void hci_sock_dev_event(struct hci_dev *hdev, int event);
2159
2160#define HCI_MGMT_VAR_LEN BIT(0)
2161#define HCI_MGMT_NO_HDEV BIT(1)
2162#define HCI_MGMT_UNTRUSTED BIT(2)
2163#define HCI_MGMT_UNCONFIGURED BIT(3)
2164#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2165
2166struct hci_mgmt_handler {
2167 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2168 u16 data_len);
2169 size_t data_len;
2170 unsigned long flags;
2171};
2172
2173struct hci_mgmt_chan {
2174 struct list_head list;
2175 unsigned short channel;
2176 size_t handler_count;
2177 const struct hci_mgmt_handler *handlers;
2178 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2179};
2180
2181int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2182void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2183
2184/* Management interface */
2185#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2186#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2187 BIT(BDADDR_LE_RANDOM))
2188#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2189 BIT(BDADDR_LE_PUBLIC) | \
2190 BIT(BDADDR_LE_RANDOM))
2191
2192/* These LE scan and inquiry parameters were chosen according to LE General
2193 * Discovery Procedure specification.
2194 */
2195#define DISCOV_LE_SCAN_WIN 0x12
2196#define DISCOV_LE_SCAN_INT 0x12
2197#define DISCOV_LE_TIMEOUT 10240 /* msec */
2198#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2199#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2200#define DISCOV_BREDR_INQUIRY_LEN 0x08
2201#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2202#define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2203#define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2204#define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2205#define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2206#define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2207#define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2208#define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2209
2210#define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2211
2212void mgmt_fill_version_info(void *ver);
2213int mgmt_new_settings(struct hci_dev *hdev);
2214void mgmt_index_added(struct hci_dev *hdev);
2215void mgmt_index_removed(struct hci_dev *hdev);
2216void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2217void mgmt_power_on(struct hci_dev *hdev, int err);
2218void __mgmt_power_off(struct hci_dev *hdev);
2219void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2220 bool persistent);
2221void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2222 u8 *name, u8 name_len);
2223void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2224 u8 link_type, u8 addr_type, u8 reason,
2225 bool mgmt_connected);
2226void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2227 u8 link_type, u8 addr_type, u8 status);
2228void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2229 u8 addr_type, u8 status);
2230void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2231void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2232 u8 status);
2233void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2234 u8 status);
2235int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2236 u8 link_type, u8 addr_type, u32 value,
2237 u8 confirm_hint);
2238int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2239 u8 link_type, u8 addr_type, u8 status);
2240int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2241 u8 link_type, u8 addr_type, u8 status);
2242int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2243 u8 link_type, u8 addr_type);
2244int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2245 u8 link_type, u8 addr_type, u8 status);
2246int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2247 u8 link_type, u8 addr_type, u8 status);
2248int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2249 u8 link_type, u8 addr_type, u32 passkey,
2250 u8 entered);
2251void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2252void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2253void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2254 u8 status);
2255void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2256void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2257void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2258void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2259 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2260 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2261 u64 instant);
2262void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2263 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2264void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2265void mgmt_suspending(struct hci_dev *hdev, u8 state);
2266void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2267 u8 addr_type);
2268bool mgmt_powering_down(struct hci_dev *hdev);
2269void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2270void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2271void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2272 bool persistent);
2273void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2274 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2275 u16 max_interval, u16 latency, u16 timeout);
2276void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2277bool mgmt_get_connectable(struct hci_dev *hdev);
2278u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2279void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2280 u8 instance);
2281void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2282 u8 instance);
2283void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2284int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2285void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2286 bdaddr_t *bdaddr, u8 addr_type);
2287
2288int hci_abort_conn(struct hci_conn *conn, u8 reason);
2289u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2290 u16 to_multiplier);
2291void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2292 __u8 ltk[16], __u8 key_size);
2293
2294void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2295 u8 *bdaddr_type);
2296
2297#define SCO_AIRMODE_MASK 0x0003
2298#define SCO_AIRMODE_CVSD 0x0000
2299#define SCO_AIRMODE_TRANSP 0x0003
2300
2301#define LOCAL_CODEC_ACL_MASK BIT(0)
2302#define LOCAL_CODEC_SCO_MASK BIT(1)
2303
2304#define TRANSPORT_TYPE_MAX 0x04
2305
2306#endif /* __HCI_CORE_H */