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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 <linux/rculist.h>
30
31#include <net/bluetooth/hci.h>
32#include <net/bluetooth/hci_sock.h>
33
34/* HCI priority */
35#define HCI_PRIO_MAX 7
36
37/* HCI Core structures */
38struct inquiry_data {
39 bdaddr_t bdaddr;
40 __u8 pscan_rep_mode;
41 __u8 pscan_period_mode;
42 __u8 pscan_mode;
43 __u8 dev_class[3];
44 __le16 clock_offset;
45 __s8 rssi;
46 __u8 ssp_mode;
47};
48
49struct inquiry_entry {
50 struct list_head all; /* inq_cache.all */
51 struct list_head list; /* unknown or resolve */
52 enum {
53 NAME_NOT_KNOWN,
54 NAME_NEEDED,
55 NAME_PENDING,
56 NAME_KNOWN,
57 } name_state;
58 __u32 timestamp;
59 struct inquiry_data data;
60};
61
62struct discovery_state {
63 int type;
64 enum {
65 DISCOVERY_STOPPED,
66 DISCOVERY_STARTING,
67 DISCOVERY_FINDING,
68 DISCOVERY_RESOLVING,
69 DISCOVERY_STOPPING,
70 } state;
71 struct list_head all; /* All devices found during inquiry */
72 struct list_head unknown; /* Name state not known */
73 struct list_head resolve; /* Name needs to be resolved */
74 __u32 timestamp;
75 bdaddr_t last_adv_addr;
76 u8 last_adv_addr_type;
77 s8 last_adv_rssi;
78 u32 last_adv_flags;
79 u8 last_adv_data[HCI_MAX_AD_LENGTH];
80 u8 last_adv_data_len;
81 bool report_invalid_rssi;
82 bool result_filtering;
83 bool limited;
84 s8 rssi;
85 u16 uuid_count;
86 u8 (*uuids)[16];
87 unsigned long scan_start;
88 unsigned long scan_duration;
89};
90
91struct hci_conn_hash {
92 struct list_head list;
93 unsigned int acl_num;
94 unsigned int amp_num;
95 unsigned int sco_num;
96 unsigned int le_num;
97 unsigned int le_num_slave;
98};
99
100struct bdaddr_list {
101 struct list_head list;
102 bdaddr_t bdaddr;
103 u8 bdaddr_type;
104};
105
106struct bt_uuid {
107 struct list_head list;
108 u8 uuid[16];
109 u8 size;
110 u8 svc_hint;
111};
112
113struct smp_csrk {
114 bdaddr_t bdaddr;
115 u8 bdaddr_type;
116 u8 type;
117 u8 val[16];
118};
119
120struct smp_ltk {
121 struct list_head list;
122 struct rcu_head rcu;
123 bdaddr_t bdaddr;
124 u8 bdaddr_type;
125 u8 authenticated;
126 u8 type;
127 u8 enc_size;
128 __le16 ediv;
129 __le64 rand;
130 u8 val[16];
131};
132
133struct smp_irk {
134 struct list_head list;
135 struct rcu_head rcu;
136 bdaddr_t rpa;
137 bdaddr_t bdaddr;
138 u8 addr_type;
139 u8 val[16];
140};
141
142struct link_key {
143 struct list_head list;
144 struct rcu_head rcu;
145 bdaddr_t bdaddr;
146 u8 type;
147 u8 val[HCI_LINK_KEY_SIZE];
148 u8 pin_len;
149};
150
151struct oob_data {
152 struct list_head list;
153 bdaddr_t bdaddr;
154 u8 bdaddr_type;
155 u8 present;
156 u8 hash192[16];
157 u8 rand192[16];
158 u8 hash256[16];
159 u8 rand256[16];
160};
161
162struct adv_info {
163 struct list_head list;
164 bool pending;
165 __u8 instance;
166 __u32 flags;
167 __u16 timeout;
168 __u16 remaining_time;
169 __u16 duration;
170 __u16 adv_data_len;
171 __u8 adv_data[HCI_MAX_AD_LENGTH];
172 __u16 scan_rsp_len;
173 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
174};
175
176#define HCI_MAX_ADV_INSTANCES 5
177#define HCI_DEFAULT_ADV_DURATION 2
178
179#define HCI_MAX_SHORT_NAME_LENGTH 10
180
181/* Default LE RPA expiry time, 15 minutes */
182#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
183
184/* Default min/max age of connection information (1s/3s) */
185#define DEFAULT_CONN_INFO_MIN_AGE 1000
186#define DEFAULT_CONN_INFO_MAX_AGE 3000
187
188struct amp_assoc {
189 __u16 len;
190 __u16 offset;
191 __u16 rem_len;
192 __u16 len_so_far;
193 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
194};
195
196#define HCI_MAX_PAGES 3
197
198struct hci_dev {
199 struct list_head list;
200 struct mutex lock;
201
202 char name[8];
203 unsigned long flags;
204 __u16 id;
205 __u8 bus;
206 __u8 dev_type;
207 bdaddr_t bdaddr;
208 bdaddr_t setup_addr;
209 bdaddr_t public_addr;
210 bdaddr_t random_addr;
211 bdaddr_t static_addr;
212 __u8 adv_addr_type;
213 __u8 dev_name[HCI_MAX_NAME_LENGTH];
214 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
215 __u8 eir[HCI_MAX_EIR_LENGTH];
216 __u16 appearance;
217 __u8 dev_class[3];
218 __u8 major_class;
219 __u8 minor_class;
220 __u8 max_page;
221 __u8 features[HCI_MAX_PAGES][8];
222 __u8 le_features[8];
223 __u8 le_white_list_size;
224 __u8 le_states[8];
225 __u8 commands[64];
226 __u8 hci_ver;
227 __u16 hci_rev;
228 __u8 lmp_ver;
229 __u16 manufacturer;
230 __u16 lmp_subver;
231 __u16 voice_setting;
232 __u8 num_iac;
233 __u8 stored_max_keys;
234 __u8 stored_num_keys;
235 __u8 io_capability;
236 __s8 inq_tx_power;
237 __u16 page_scan_interval;
238 __u16 page_scan_window;
239 __u8 page_scan_type;
240 __u8 le_adv_channel_map;
241 __u16 le_adv_min_interval;
242 __u16 le_adv_max_interval;
243 __u8 le_scan_type;
244 __u16 le_scan_interval;
245 __u16 le_scan_window;
246 __u16 le_conn_min_interval;
247 __u16 le_conn_max_interval;
248 __u16 le_conn_latency;
249 __u16 le_supv_timeout;
250 __u16 le_def_tx_len;
251 __u16 le_def_tx_time;
252 __u16 le_max_tx_len;
253 __u16 le_max_tx_time;
254 __u16 le_max_rx_len;
255 __u16 le_max_rx_time;
256 __u16 discov_interleaved_timeout;
257 __u16 conn_info_min_age;
258 __u16 conn_info_max_age;
259 __u8 ssp_debug_mode;
260 __u8 hw_error_code;
261 __u32 clock;
262
263 __u16 devid_source;
264 __u16 devid_vendor;
265 __u16 devid_product;
266 __u16 devid_version;
267
268 __u16 pkt_type;
269 __u16 esco_type;
270 __u16 link_policy;
271 __u16 link_mode;
272
273 __u32 idle_timeout;
274 __u16 sniff_min_interval;
275 __u16 sniff_max_interval;
276
277 __u8 amp_status;
278 __u32 amp_total_bw;
279 __u32 amp_max_bw;
280 __u32 amp_min_latency;
281 __u32 amp_max_pdu;
282 __u8 amp_type;
283 __u16 amp_pal_cap;
284 __u16 amp_assoc_size;
285 __u32 amp_max_flush_to;
286 __u32 amp_be_flush_to;
287
288 struct amp_assoc loc_assoc;
289
290 __u8 flow_ctl_mode;
291
292 unsigned int auto_accept_delay;
293
294 unsigned long quirks;
295
296 atomic_t cmd_cnt;
297 unsigned int acl_cnt;
298 unsigned int sco_cnt;
299 unsigned int le_cnt;
300
301 unsigned int acl_mtu;
302 unsigned int sco_mtu;
303 unsigned int le_mtu;
304 unsigned int acl_pkts;
305 unsigned int sco_pkts;
306 unsigned int le_pkts;
307
308 __u16 block_len;
309 __u16 block_mtu;
310 __u16 num_blocks;
311 __u16 block_cnt;
312
313 unsigned long acl_last_tx;
314 unsigned long sco_last_tx;
315 unsigned long le_last_tx;
316
317 struct workqueue_struct *workqueue;
318 struct workqueue_struct *req_workqueue;
319
320 struct work_struct power_on;
321 struct delayed_work power_off;
322 struct work_struct error_reset;
323
324 __u16 discov_timeout;
325 struct delayed_work discov_off;
326
327 struct delayed_work service_cache;
328
329 struct delayed_work cmd_timer;
330
331 struct work_struct rx_work;
332 struct work_struct cmd_work;
333 struct work_struct tx_work;
334
335 struct work_struct discov_update;
336 struct work_struct bg_scan_update;
337 struct work_struct scan_update;
338 struct work_struct connectable_update;
339 struct work_struct discoverable_update;
340 struct delayed_work le_scan_disable;
341 struct delayed_work le_scan_restart;
342
343 struct sk_buff_head rx_q;
344 struct sk_buff_head raw_q;
345 struct sk_buff_head cmd_q;
346
347 struct sk_buff *sent_cmd;
348
349 struct mutex req_lock;
350 wait_queue_head_t req_wait_q;
351 __u32 req_status;
352 __u32 req_result;
353 struct sk_buff *req_skb;
354
355 void *smp_data;
356 void *smp_bredr_data;
357
358 struct discovery_state discovery;
359 struct hci_conn_hash conn_hash;
360
361 struct list_head mgmt_pending;
362 struct list_head blacklist;
363 struct list_head whitelist;
364 struct list_head uuids;
365 struct list_head link_keys;
366 struct list_head long_term_keys;
367 struct list_head identity_resolving_keys;
368 struct list_head remote_oob_data;
369 struct list_head le_white_list;
370 struct list_head le_conn_params;
371 struct list_head pend_le_conns;
372 struct list_head pend_le_reports;
373
374 struct hci_dev_stats stat;
375
376 atomic_t promisc;
377
378 const char *hw_info;
379 const char *fw_info;
380 struct dentry *debugfs;
381
382 struct device dev;
383
384 struct rfkill *rfkill;
385
386 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
387
388 __s8 adv_tx_power;
389 __u8 adv_data[HCI_MAX_AD_LENGTH];
390 __u8 adv_data_len;
391 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
392 __u8 scan_rsp_data_len;
393
394 struct list_head adv_instances;
395 unsigned int adv_instance_cnt;
396 __u8 cur_adv_instance;
397 __u16 adv_instance_timeout;
398 struct delayed_work adv_instance_expire;
399
400 __u8 irk[16];
401 __u32 rpa_timeout;
402 struct delayed_work rpa_expired;
403 bdaddr_t rpa;
404
405#if IS_ENABLED(CONFIG_BT_LEDS)
406 struct led_trigger *power_led;
407#endif
408
409 int (*open)(struct hci_dev *hdev);
410 int (*close)(struct hci_dev *hdev);
411 int (*flush)(struct hci_dev *hdev);
412 int (*setup)(struct hci_dev *hdev);
413 int (*shutdown)(struct hci_dev *hdev);
414 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
415 void (*notify)(struct hci_dev *hdev, unsigned int evt);
416 void (*hw_error)(struct hci_dev *hdev, u8 code);
417 int (*post_init)(struct hci_dev *hdev);
418 int (*set_diag)(struct hci_dev *hdev, bool enable);
419 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
420};
421
422#define HCI_PHY_HANDLE(handle) (handle & 0xff)
423
424struct hci_conn {
425 struct list_head list;
426
427 atomic_t refcnt;
428
429 bdaddr_t dst;
430 __u8 dst_type;
431 bdaddr_t src;
432 __u8 src_type;
433 bdaddr_t init_addr;
434 __u8 init_addr_type;
435 bdaddr_t resp_addr;
436 __u8 resp_addr_type;
437 __u16 handle;
438 __u16 state;
439 __u8 mode;
440 __u8 type;
441 __u8 role;
442 bool out;
443 __u8 attempt;
444 __u8 dev_class[3];
445 __u8 features[HCI_MAX_PAGES][8];
446 __u16 pkt_type;
447 __u16 link_policy;
448 __u8 key_type;
449 __u8 auth_type;
450 __u8 sec_level;
451 __u8 pending_sec_level;
452 __u8 pin_length;
453 __u8 enc_key_size;
454 __u8 io_capability;
455 __u32 passkey_notify;
456 __u8 passkey_entered;
457 __u16 disc_timeout;
458 __u16 conn_timeout;
459 __u16 setting;
460 __u16 le_conn_min_interval;
461 __u16 le_conn_max_interval;
462 __u16 le_conn_interval;
463 __u16 le_conn_latency;
464 __u16 le_supv_timeout;
465 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
466 __u8 le_adv_data_len;
467 __s8 rssi;
468 __s8 tx_power;
469 __s8 max_tx_power;
470 unsigned long flags;
471
472 __u32 clock;
473 __u16 clock_accuracy;
474
475 unsigned long conn_info_timestamp;
476
477 __u8 remote_cap;
478 __u8 remote_auth;
479 __u8 remote_id;
480
481 unsigned int sent;
482
483 struct sk_buff_head data_q;
484 struct list_head chan_list;
485
486 struct delayed_work disc_work;
487 struct delayed_work auto_accept_work;
488 struct delayed_work idle_work;
489 struct delayed_work le_conn_timeout;
490 struct work_struct le_scan_cleanup;
491
492 struct device dev;
493 struct dentry *debugfs;
494
495 struct hci_dev *hdev;
496 void *l2cap_data;
497 void *sco_data;
498 struct amp_mgr *amp_mgr;
499
500 struct hci_conn *link;
501
502 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
503 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
504 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
505};
506
507struct hci_chan {
508 struct list_head list;
509 __u16 handle;
510 struct hci_conn *conn;
511 struct sk_buff_head data_q;
512 unsigned int sent;
513 __u8 state;
514};
515
516struct hci_conn_params {
517 struct list_head list;
518 struct list_head action;
519
520 bdaddr_t addr;
521 u8 addr_type;
522
523 u16 conn_min_interval;
524 u16 conn_max_interval;
525 u16 conn_latency;
526 u16 supervision_timeout;
527
528 enum {
529 HCI_AUTO_CONN_DISABLED,
530 HCI_AUTO_CONN_REPORT,
531 HCI_AUTO_CONN_DIRECT,
532 HCI_AUTO_CONN_ALWAYS,
533 HCI_AUTO_CONN_LINK_LOSS,
534 HCI_AUTO_CONN_EXPLICIT,
535 } auto_connect;
536
537 struct hci_conn *conn;
538 bool explicit_connect;
539};
540
541extern struct list_head hci_dev_list;
542extern struct list_head hci_cb_list;
543extern rwlock_t hci_dev_list_lock;
544extern struct mutex hci_cb_list_lock;
545
546#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
547#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
548#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
549#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
550#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
551#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
552#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
553
554#define hci_dev_clear_volatile_flags(hdev) \
555 do { \
556 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
557 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
558 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
559 } while (0)
560
561/* ----- HCI interface to upper protocols ----- */
562int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
563int l2cap_disconn_ind(struct hci_conn *hcon);
564void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
565
566#if IS_ENABLED(CONFIG_BT_BREDR)
567int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
568void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
569#else
570static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
571 __u8 *flags)
572{
573 return 0;
574}
575
576static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
577{
578}
579#endif
580
581/* ----- Inquiry cache ----- */
582#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
583#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
584
585static inline void discovery_init(struct hci_dev *hdev)
586{
587 hdev->discovery.state = DISCOVERY_STOPPED;
588 INIT_LIST_HEAD(&hdev->discovery.all);
589 INIT_LIST_HEAD(&hdev->discovery.unknown);
590 INIT_LIST_HEAD(&hdev->discovery.resolve);
591 hdev->discovery.report_invalid_rssi = true;
592 hdev->discovery.rssi = HCI_RSSI_INVALID;
593}
594
595static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
596{
597 hdev->discovery.result_filtering = false;
598 hdev->discovery.report_invalid_rssi = true;
599 hdev->discovery.rssi = HCI_RSSI_INVALID;
600 hdev->discovery.uuid_count = 0;
601 kfree(hdev->discovery.uuids);
602 hdev->discovery.uuids = NULL;
603 hdev->discovery.scan_start = 0;
604 hdev->discovery.scan_duration = 0;
605}
606
607bool hci_discovery_active(struct hci_dev *hdev);
608
609void hci_discovery_set_state(struct hci_dev *hdev, int state);
610
611static inline int inquiry_cache_empty(struct hci_dev *hdev)
612{
613 return list_empty(&hdev->discovery.all);
614}
615
616static inline long inquiry_cache_age(struct hci_dev *hdev)
617{
618 struct discovery_state *c = &hdev->discovery;
619 return jiffies - c->timestamp;
620}
621
622static inline long inquiry_entry_age(struct inquiry_entry *e)
623{
624 return jiffies - e->timestamp;
625}
626
627struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
628 bdaddr_t *bdaddr);
629struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
630 bdaddr_t *bdaddr);
631struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
632 bdaddr_t *bdaddr,
633 int state);
634void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
635 struct inquiry_entry *ie);
636u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
637 bool name_known);
638void hci_inquiry_cache_flush(struct hci_dev *hdev);
639
640/* ----- HCI Connections ----- */
641enum {
642 HCI_CONN_AUTH_PEND,
643 HCI_CONN_REAUTH_PEND,
644 HCI_CONN_ENCRYPT_PEND,
645 HCI_CONN_RSWITCH_PEND,
646 HCI_CONN_MODE_CHANGE_PEND,
647 HCI_CONN_SCO_SETUP_PEND,
648 HCI_CONN_MGMT_CONNECTED,
649 HCI_CONN_SSP_ENABLED,
650 HCI_CONN_SC_ENABLED,
651 HCI_CONN_AES_CCM,
652 HCI_CONN_POWER_SAVE,
653 HCI_CONN_FLUSH_KEY,
654 HCI_CONN_ENCRYPT,
655 HCI_CONN_AUTH,
656 HCI_CONN_SECURE,
657 HCI_CONN_FIPS,
658 HCI_CONN_STK_ENCRYPT,
659 HCI_CONN_AUTH_INITIATOR,
660 HCI_CONN_DROP,
661 HCI_CONN_PARAM_REMOVAL_PEND,
662 HCI_CONN_NEW_LINK_KEY,
663 HCI_CONN_SCANNING,
664 HCI_CONN_AUTH_FAILURE,
665};
666
667static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
668{
669 struct hci_dev *hdev = conn->hdev;
670 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
671 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
672}
673
674static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
675{
676 struct hci_dev *hdev = conn->hdev;
677 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
678 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
679}
680
681static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
682{
683 struct hci_conn_hash *h = &hdev->conn_hash;
684 list_add_rcu(&c->list, &h->list);
685 switch (c->type) {
686 case ACL_LINK:
687 h->acl_num++;
688 break;
689 case AMP_LINK:
690 h->amp_num++;
691 break;
692 case LE_LINK:
693 h->le_num++;
694 if (c->role == HCI_ROLE_SLAVE)
695 h->le_num_slave++;
696 break;
697 case SCO_LINK:
698 case ESCO_LINK:
699 h->sco_num++;
700 break;
701 }
702}
703
704static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
705{
706 struct hci_conn_hash *h = &hdev->conn_hash;
707
708 list_del_rcu(&c->list);
709 synchronize_rcu();
710
711 switch (c->type) {
712 case ACL_LINK:
713 h->acl_num--;
714 break;
715 case AMP_LINK:
716 h->amp_num--;
717 break;
718 case LE_LINK:
719 h->le_num--;
720 if (c->role == HCI_ROLE_SLAVE)
721 h->le_num_slave--;
722 break;
723 case SCO_LINK:
724 case ESCO_LINK:
725 h->sco_num--;
726 break;
727 }
728}
729
730static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
731{
732 struct hci_conn_hash *h = &hdev->conn_hash;
733 switch (type) {
734 case ACL_LINK:
735 return h->acl_num;
736 case AMP_LINK:
737 return h->amp_num;
738 case LE_LINK:
739 return h->le_num;
740 case SCO_LINK:
741 case ESCO_LINK:
742 return h->sco_num;
743 default:
744 return 0;
745 }
746}
747
748static inline unsigned int hci_conn_count(struct hci_dev *hdev)
749{
750 struct hci_conn_hash *c = &hdev->conn_hash;
751
752 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
753}
754
755static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
756{
757 struct hci_conn_hash *h = &hdev->conn_hash;
758 struct hci_conn *c;
759 __u8 type = INVALID_LINK;
760
761 rcu_read_lock();
762
763 list_for_each_entry_rcu(c, &h->list, list) {
764 if (c->handle == handle) {
765 type = c->type;
766 break;
767 }
768 }
769
770 rcu_read_unlock();
771
772 return type;
773}
774
775static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
776 __u16 handle)
777{
778 struct hci_conn_hash *h = &hdev->conn_hash;
779 struct hci_conn *c;
780
781 rcu_read_lock();
782
783 list_for_each_entry_rcu(c, &h->list, list) {
784 if (c->handle == handle) {
785 rcu_read_unlock();
786 return c;
787 }
788 }
789 rcu_read_unlock();
790
791 return NULL;
792}
793
794static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
795 __u8 type, bdaddr_t *ba)
796{
797 struct hci_conn_hash *h = &hdev->conn_hash;
798 struct hci_conn *c;
799
800 rcu_read_lock();
801
802 list_for_each_entry_rcu(c, &h->list, list) {
803 if (c->type == type && !bacmp(&c->dst, ba)) {
804 rcu_read_unlock();
805 return c;
806 }
807 }
808
809 rcu_read_unlock();
810
811 return NULL;
812}
813
814static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
815 bdaddr_t *ba,
816 __u8 ba_type)
817{
818 struct hci_conn_hash *h = &hdev->conn_hash;
819 struct hci_conn *c;
820
821 rcu_read_lock();
822
823 list_for_each_entry_rcu(c, &h->list, list) {
824 if (c->type != LE_LINK)
825 continue;
826
827 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
828 rcu_read_unlock();
829 return c;
830 }
831 }
832
833 rcu_read_unlock();
834
835 return NULL;
836}
837
838static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
839 __u8 type, __u16 state)
840{
841 struct hci_conn_hash *h = &hdev->conn_hash;
842 struct hci_conn *c;
843
844 rcu_read_lock();
845
846 list_for_each_entry_rcu(c, &h->list, list) {
847 if (c->type == type && c->state == state) {
848 rcu_read_unlock();
849 return c;
850 }
851 }
852
853 rcu_read_unlock();
854
855 return NULL;
856}
857
858static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
859{
860 struct hci_conn_hash *h = &hdev->conn_hash;
861 struct hci_conn *c;
862
863 rcu_read_lock();
864
865 list_for_each_entry_rcu(c, &h->list, list) {
866 if (c->type == LE_LINK && c->state == BT_CONNECT &&
867 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
868 rcu_read_unlock();
869 return c;
870 }
871 }
872
873 rcu_read_unlock();
874
875 return NULL;
876}
877
878int hci_disconnect(struct hci_conn *conn, __u8 reason);
879bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
880void hci_sco_setup(struct hci_conn *conn, __u8 status);
881
882struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
883 u8 role);
884int hci_conn_del(struct hci_conn *conn);
885void hci_conn_hash_flush(struct hci_dev *hdev);
886void hci_conn_check_pending(struct hci_dev *hdev);
887
888struct hci_chan *hci_chan_create(struct hci_conn *conn);
889void hci_chan_del(struct hci_chan *chan);
890void hci_chan_list_flush(struct hci_conn *conn);
891struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
892
893struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
894 u8 dst_type, u8 sec_level,
895 u16 conn_timeout);
896struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
897 u8 dst_type, u8 sec_level, u16 conn_timeout,
898 u8 role, bdaddr_t *direct_rpa);
899struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
900 u8 sec_level, u8 auth_type);
901struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
902 __u16 setting);
903int hci_conn_check_link_mode(struct hci_conn *conn);
904int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
905int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
906 bool initiator);
907int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
908
909void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
910
911void hci_le_conn_failed(struct hci_conn *conn, u8 status);
912
913/*
914 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
915 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
916 * working or anything else. They just guarantee that the object is available
917 * and can be dereferenced. So you can use its locks, local variables and any
918 * other constant data.
919 * Before accessing runtime data, you _must_ lock the object and then check that
920 * it is still running. As soon as you release the locks, the connection might
921 * get dropped, though.
922 *
923 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
924 * how long the underlying connection is held. So every channel that runs on the
925 * hci_conn object calls this to prevent the connection from disappearing. As
926 * long as you hold a device, you must also guarantee that you have a valid
927 * reference to the device via hci_conn_get() (or the initial reference from
928 * hci_conn_add()).
929 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
930 * break because nobody cares for that. But this means, we cannot use
931 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
932 */
933
934static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
935{
936 get_device(&conn->dev);
937 return conn;
938}
939
940static inline void hci_conn_put(struct hci_conn *conn)
941{
942 put_device(&conn->dev);
943}
944
945static inline void hci_conn_hold(struct hci_conn *conn)
946{
947 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
948
949 atomic_inc(&conn->refcnt);
950 cancel_delayed_work(&conn->disc_work);
951}
952
953static inline void hci_conn_drop(struct hci_conn *conn)
954{
955 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
956
957 if (atomic_dec_and_test(&conn->refcnt)) {
958 unsigned long timeo;
959
960 switch (conn->type) {
961 case ACL_LINK:
962 case LE_LINK:
963 cancel_delayed_work(&conn->idle_work);
964 if (conn->state == BT_CONNECTED) {
965 timeo = conn->disc_timeout;
966 if (!conn->out)
967 timeo *= 2;
968 } else {
969 timeo = 0;
970 }
971 break;
972
973 case AMP_LINK:
974 timeo = conn->disc_timeout;
975 break;
976
977 default:
978 timeo = 0;
979 break;
980 }
981
982 cancel_delayed_work(&conn->disc_work);
983 queue_delayed_work(conn->hdev->workqueue,
984 &conn->disc_work, timeo);
985 }
986}
987
988/* ----- HCI Devices ----- */
989static inline void hci_dev_put(struct hci_dev *d)
990{
991 BT_DBG("%s orig refcnt %d", d->name,
992 kref_read(&d->dev.kobj.kref));
993
994 put_device(&d->dev);
995}
996
997static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
998{
999 BT_DBG("%s orig refcnt %d", d->name,
1000 kref_read(&d->dev.kobj.kref));
1001
1002 get_device(&d->dev);
1003 return d;
1004}
1005
1006#define hci_dev_lock(d) mutex_lock(&d->lock)
1007#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1008
1009#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1010#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1011
1012static inline void *hci_get_drvdata(struct hci_dev *hdev)
1013{
1014 return dev_get_drvdata(&hdev->dev);
1015}
1016
1017static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1018{
1019 dev_set_drvdata(&hdev->dev, data);
1020}
1021
1022struct hci_dev *hci_dev_get(int index);
1023struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1024
1025struct hci_dev *hci_alloc_dev(void);
1026void hci_free_dev(struct hci_dev *hdev);
1027int hci_register_dev(struct hci_dev *hdev);
1028void hci_unregister_dev(struct hci_dev *hdev);
1029int hci_suspend_dev(struct hci_dev *hdev);
1030int hci_resume_dev(struct hci_dev *hdev);
1031int hci_reset_dev(struct hci_dev *hdev);
1032int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1033int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1034__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1035__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1036int hci_dev_open(__u16 dev);
1037int hci_dev_close(__u16 dev);
1038int hci_dev_do_close(struct hci_dev *hdev);
1039int hci_dev_reset(__u16 dev);
1040int hci_dev_reset_stat(__u16 dev);
1041int hci_dev_cmd(unsigned int cmd, void __user *arg);
1042int hci_get_dev_list(void __user *arg);
1043int hci_get_dev_info(void __user *arg);
1044int hci_get_conn_list(void __user *arg);
1045int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1046int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1047int hci_inquiry(void __user *arg);
1048
1049struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1050 bdaddr_t *bdaddr, u8 type);
1051int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1052int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1053void hci_bdaddr_list_clear(struct list_head *list);
1054
1055struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1056 bdaddr_t *addr, u8 addr_type);
1057struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1058 bdaddr_t *addr, u8 addr_type);
1059void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1060void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1061
1062struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1063 bdaddr_t *addr,
1064 u8 addr_type);
1065
1066void hci_uuids_clear(struct hci_dev *hdev);
1067
1068void hci_link_keys_clear(struct hci_dev *hdev);
1069struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1070struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1071 bdaddr_t *bdaddr, u8 *val, u8 type,
1072 u8 pin_len, bool *persistent);
1073struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1074 u8 addr_type, u8 type, u8 authenticated,
1075 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1076struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1077 u8 addr_type, u8 role);
1078int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1079void hci_smp_ltks_clear(struct hci_dev *hdev);
1080int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1081
1082struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1083struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 addr_type);
1085struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1086 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1087void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1088void hci_smp_irks_clear(struct hci_dev *hdev);
1089
1090bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1091
1092void hci_remote_oob_data_clear(struct hci_dev *hdev);
1093struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1094 bdaddr_t *bdaddr, u8 bdaddr_type);
1095int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1097 u8 *hash256, u8 *rand256);
1098int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1099 u8 bdaddr_type);
1100
1101void hci_adv_instances_clear(struct hci_dev *hdev);
1102struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1103struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1104int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1105 u16 adv_data_len, u8 *adv_data,
1106 u16 scan_rsp_len, u8 *scan_rsp_data,
1107 u16 timeout, u16 duration);
1108int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1109
1110void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1111
1112void hci_init_sysfs(struct hci_dev *hdev);
1113void hci_conn_init_sysfs(struct hci_conn *conn);
1114void hci_conn_add_sysfs(struct hci_conn *conn);
1115void hci_conn_del_sysfs(struct hci_conn *conn);
1116
1117#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1118
1119/* ----- LMP capabilities ----- */
1120#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1121#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1122#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1123#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1124#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1125#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1126#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1127#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1128#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1129#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1130#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1131#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1132#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1133#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1134#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1135#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1136#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1137#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1138#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1139
1140/* ----- Extended LMP capabilities ----- */
1141#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1142#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1143#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1144#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1145#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1146#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1147
1148/* ----- Host capabilities ----- */
1149#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1150#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1151#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1152#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1153
1154#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1155 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1156#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1157 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1158
1159/* ----- HCI protocols ----- */
1160#define HCI_PROTO_DEFER 0x01
1161
1162static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1163 __u8 type, __u8 *flags)
1164{
1165 switch (type) {
1166 case ACL_LINK:
1167 return l2cap_connect_ind(hdev, bdaddr);
1168
1169 case SCO_LINK:
1170 case ESCO_LINK:
1171 return sco_connect_ind(hdev, bdaddr, flags);
1172
1173 default:
1174 BT_ERR("unknown link type %d", type);
1175 return -EINVAL;
1176 }
1177}
1178
1179static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1180{
1181 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1182 return HCI_ERROR_REMOTE_USER_TERM;
1183
1184 return l2cap_disconn_ind(conn);
1185}
1186
1187/* ----- HCI callbacks ----- */
1188struct hci_cb {
1189 struct list_head list;
1190
1191 char *name;
1192
1193 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1194 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1195 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1196 __u8 encrypt);
1197 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1198 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1199};
1200
1201static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1202{
1203 struct hci_cb *cb;
1204
1205 mutex_lock(&hci_cb_list_lock);
1206 list_for_each_entry(cb, &hci_cb_list, list) {
1207 if (cb->connect_cfm)
1208 cb->connect_cfm(conn, status);
1209 }
1210 mutex_unlock(&hci_cb_list_lock);
1211
1212 if (conn->connect_cfm_cb)
1213 conn->connect_cfm_cb(conn, status);
1214}
1215
1216static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1217{
1218 struct hci_cb *cb;
1219
1220 mutex_lock(&hci_cb_list_lock);
1221 list_for_each_entry(cb, &hci_cb_list, list) {
1222 if (cb->disconn_cfm)
1223 cb->disconn_cfm(conn, reason);
1224 }
1225 mutex_unlock(&hci_cb_list_lock);
1226
1227 if (conn->disconn_cfm_cb)
1228 conn->disconn_cfm_cb(conn, reason);
1229}
1230
1231static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1232{
1233 struct hci_cb *cb;
1234 __u8 encrypt;
1235
1236 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1237 return;
1238
1239 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1240
1241 mutex_lock(&hci_cb_list_lock);
1242 list_for_each_entry(cb, &hci_cb_list, list) {
1243 if (cb->security_cfm)
1244 cb->security_cfm(conn, status, encrypt);
1245 }
1246 mutex_unlock(&hci_cb_list_lock);
1247
1248 if (conn->security_cfm_cb)
1249 conn->security_cfm_cb(conn, status);
1250}
1251
1252static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1253 __u8 encrypt)
1254{
1255 struct hci_cb *cb;
1256
1257 if (conn->sec_level == BT_SECURITY_SDP)
1258 conn->sec_level = BT_SECURITY_LOW;
1259
1260 if (conn->pending_sec_level > conn->sec_level)
1261 conn->sec_level = conn->pending_sec_level;
1262
1263 mutex_lock(&hci_cb_list_lock);
1264 list_for_each_entry(cb, &hci_cb_list, list) {
1265 if (cb->security_cfm)
1266 cb->security_cfm(conn, status, encrypt);
1267 }
1268 mutex_unlock(&hci_cb_list_lock);
1269
1270 if (conn->security_cfm_cb)
1271 conn->security_cfm_cb(conn, status);
1272}
1273
1274static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1275{
1276 struct hci_cb *cb;
1277
1278 mutex_lock(&hci_cb_list_lock);
1279 list_for_each_entry(cb, &hci_cb_list, list) {
1280 if (cb->key_change_cfm)
1281 cb->key_change_cfm(conn, status);
1282 }
1283 mutex_unlock(&hci_cb_list_lock);
1284}
1285
1286static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1287 __u8 role)
1288{
1289 struct hci_cb *cb;
1290
1291 mutex_lock(&hci_cb_list_lock);
1292 list_for_each_entry(cb, &hci_cb_list, list) {
1293 if (cb->role_switch_cfm)
1294 cb->role_switch_cfm(conn, status, role);
1295 }
1296 mutex_unlock(&hci_cb_list_lock);
1297}
1298
1299static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1300 size_t *data_len)
1301{
1302 size_t parsed = 0;
1303
1304 if (eir_len < 2)
1305 return NULL;
1306
1307 while (parsed < eir_len - 1) {
1308 u8 field_len = eir[0];
1309
1310 if (field_len == 0)
1311 break;
1312
1313 parsed += field_len + 1;
1314
1315 if (parsed > eir_len)
1316 break;
1317
1318 if (eir[1] != type) {
1319 eir += field_len + 1;
1320 continue;
1321 }
1322
1323 /* Zero length data */
1324 if (field_len == 1)
1325 return NULL;
1326
1327 if (data_len)
1328 *data_len = field_len - 1;
1329
1330 return &eir[2];
1331 }
1332
1333 return NULL;
1334}
1335
1336static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1337{
1338 if (addr_type != ADDR_LE_DEV_RANDOM)
1339 return false;
1340
1341 if ((bdaddr->b[5] & 0xc0) == 0x40)
1342 return true;
1343
1344 return false;
1345}
1346
1347static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1348{
1349 if (addr_type == ADDR_LE_DEV_PUBLIC)
1350 return true;
1351
1352 /* Check for Random Static address type */
1353 if ((addr->b[5] & 0xc0) == 0xc0)
1354 return true;
1355
1356 return false;
1357}
1358
1359static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1360 bdaddr_t *bdaddr, u8 addr_type)
1361{
1362 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1363 return NULL;
1364
1365 return hci_find_irk_by_rpa(hdev, bdaddr);
1366}
1367
1368static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1369 u16 to_multiplier)
1370{
1371 u16 max_latency;
1372
1373 if (min > max || min < 6 || max > 3200)
1374 return -EINVAL;
1375
1376 if (to_multiplier < 10 || to_multiplier > 3200)
1377 return -EINVAL;
1378
1379 if (max >= to_multiplier * 8)
1380 return -EINVAL;
1381
1382 max_latency = (to_multiplier * 4 / max) - 1;
1383 if (latency > 499 || latency > max_latency)
1384 return -EINVAL;
1385
1386 return 0;
1387}
1388
1389int hci_register_cb(struct hci_cb *hcb);
1390int hci_unregister_cb(struct hci_cb *hcb);
1391
1392struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1393 const void *param, u32 timeout);
1394struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1395 const void *param, u8 event, u32 timeout);
1396
1397int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1398 const void *param);
1399void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1400void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1401
1402void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1403
1404struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1405 const void *param, u32 timeout);
1406
1407/* ----- HCI Sockets ----- */
1408void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1409void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1410 int flag, struct sock *skip_sk);
1411void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1412void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1413 void *data, u16 data_len, ktime_t tstamp,
1414 int flag, struct sock *skip_sk);
1415
1416void hci_sock_dev_event(struct hci_dev *hdev, int event);
1417
1418#define HCI_MGMT_VAR_LEN BIT(0)
1419#define HCI_MGMT_NO_HDEV BIT(1)
1420#define HCI_MGMT_UNTRUSTED BIT(2)
1421#define HCI_MGMT_UNCONFIGURED BIT(3)
1422
1423struct hci_mgmt_handler {
1424 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1425 u16 data_len);
1426 size_t data_len;
1427 unsigned long flags;
1428};
1429
1430struct hci_mgmt_chan {
1431 struct list_head list;
1432 unsigned short channel;
1433 size_t handler_count;
1434 const struct hci_mgmt_handler *handlers;
1435 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1436};
1437
1438int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1439void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1440
1441/* Management interface */
1442#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1443#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1444 BIT(BDADDR_LE_RANDOM))
1445#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1446 BIT(BDADDR_LE_PUBLIC) | \
1447 BIT(BDADDR_LE_RANDOM))
1448
1449/* These LE scan and inquiry parameters were chosen according to LE General
1450 * Discovery Procedure specification.
1451 */
1452#define DISCOV_LE_SCAN_WIN 0x12
1453#define DISCOV_LE_SCAN_INT 0x12
1454#define DISCOV_LE_TIMEOUT 10240 /* msec */
1455#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1456#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1457#define DISCOV_BREDR_INQUIRY_LEN 0x08
1458#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1459
1460void mgmt_fill_version_info(void *ver);
1461int mgmt_new_settings(struct hci_dev *hdev);
1462void mgmt_index_added(struct hci_dev *hdev);
1463void mgmt_index_removed(struct hci_dev *hdev);
1464void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1465void mgmt_power_on(struct hci_dev *hdev, int err);
1466void __mgmt_power_off(struct hci_dev *hdev);
1467void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1468 bool persistent);
1469void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1470 u32 flags, u8 *name, u8 name_len);
1471void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1472 u8 link_type, u8 addr_type, u8 reason,
1473 bool mgmt_connected);
1474void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1475 u8 link_type, u8 addr_type, u8 status);
1476void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1477 u8 addr_type, u8 status);
1478void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1479void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 u8 status);
1481void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 status);
1483int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1484 u8 link_type, u8 addr_type, u32 value,
1485 u8 confirm_hint);
1486int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type, u8 status);
1490int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type);
1492int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1493 u8 link_type, u8 addr_type, u8 status);
1494int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1495 u8 link_type, u8 addr_type, u8 status);
1496int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1497 u8 link_type, u8 addr_type, u32 passkey,
1498 u8 entered);
1499void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1500void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1501void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1502void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1503 u8 status);
1504void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1505void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1506void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1507void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1508 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1509 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1510void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1511 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1512void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1513bool mgmt_powering_down(struct hci_dev *hdev);
1514void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1515void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1516void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1517 bool persistent);
1518void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1519 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1520 u16 max_interval, u16 latency, u16 timeout);
1521void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1522bool mgmt_get_connectable(struct hci_dev *hdev);
1523void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1524void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1525u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1526void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1527 u8 instance);
1528void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1529 u8 instance);
1530
1531u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1532 u16 to_multiplier);
1533void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1534 __u8 ltk[16], __u8 key_size);
1535
1536void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1537 u8 *bdaddr_type);
1538
1539#define SCO_AIRMODE_MASK 0x0003
1540#define SCO_AIRMODE_CVSD 0x0000
1541#define SCO_AIRMODE_TRANSP 0x0003
1542
1543#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 */