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