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