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