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