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Bluetooth: Emit controller suspend and resume events
[linux-2.6-block.git] / include / net / bluetooth / hci_core.h
CommitLineData
04fafe4e 1/*
1da177e4 2 BlueZ - Bluetooth protocol stack for Linux
2d0a0346 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
1da177e4
LT		 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
04fafe4e
RS		 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
1da177e4
LT		 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
04fafe4e
RS		 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
1da177e4
LT		 22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
e5e1e7fd 28#include <linux/idr.h>
6d5d2ee6 29#include <linux/leds.h>
b2d09103
IM		 30#include <linux/rculist.h>
31
1da177e4 32#include <net/bluetooth/hci.h>
f49daa81 33#include <net/bluetooth/hci_sock.h>
1da177e4 34
5e59b791
LAD		 35/* HCI priority */
36#define HCI_PRIO_MAX 7
37
1da177e4 38/* HCI Core structures */
1da177e4
LT		 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];
1ebb9252 45 __le16 clock_offset;
1da177e4 46 __s8 rssi;
41a96212 47 __u8 ssp_mode;
1da177e4
LT		 48};
49
50struct inquiry_entry {
561aafbc
JH		 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;
1da177e4
LT		 59 __u32 timestamp;
60 struct inquiry_data data;
61};
62
30883512 63struct discovery_state {
f64b993f 64 int type;
ff9ef578
JH		 65 enum {
66 DISCOVERY_STOPPED,
67 DISCOVERY_STARTING,
343f935b 68 DISCOVERY_FINDING,
30dc78e1 69 DISCOVERY_RESOLVING,
ff9ef578
JH		 70 DISCOVERY_STOPPING,
71 } state;
c3c7ea65 72 struct list_head all; /* All devices found during inquiry */
f64b993f
GP		 73 struct list_head unknown; /* Name state not known */
74 struct list_head resolve; /* Name needs to be resolved */
75 __u32 timestamp;
b9a6328f
JH		 76 bdaddr_t last_adv_addr;
77 u8 last_adv_addr_type;
ff5cd29f 78 s8 last_adv_rssi;
c70a7e4c 79 u32 last_adv_flags;
b9a6328f
JH		 80 u8 last_adv_data[HCI_MAX_AD_LENGTH];
81 u8 last_adv_data_len;
da25cf6a 82 bool report_invalid_rssi;
82f8b651 83 bool result_filtering;
78b781ca 84 bool limited;
37eab042
JP		 85 s8 rssi;
86 u16 uuid_count;
87 u8 (*uuids)[16];
2d28cfe7
JP		 88 unsigned long scan_start;
89 unsigned long scan_duration;
1da177e4
LT		 90};
91
9952d90e
APS		 92#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
93
94enum suspend_tasks {
4867bd00
APS		 95 SUSPEND_PAUSE_DISCOVERY,
96 SUSPEND_UNPAUSE_DISCOVERY,
97
98 SUSPEND_PAUSE_ADVERTISING,
99 SUSPEND_UNPAUSE_ADVERTISING,
100
4f40afc6
APS		 101 SUSPEND_SCAN_DISABLE,
102 SUSPEND_SCAN_ENABLE,
103 SUSPEND_DISCONNECTING,
104
9952d90e
APS		 105 SUSPEND_POWERING_DOWN,
106
107 SUSPEND_PREPARE_NOTIFIER,
108 __SUSPEND_NUM_TASKS
109};
110
111enum suspended_state {
112 BT_RUNNING = 0,
4f40afc6 113 BT_SUSPEND_DISCONNECT,
0d2c9825 114 BT_SUSPEND_CONFIGURE_WAKE,
9952d90e
APS		 115};
116
1da177e4
LT		 117struct hci_conn_hash {
118 struct list_head list;
1da177e4 119 unsigned int acl_num;
bd1eb66b 120 unsigned int amp_num;
1da177e4 121 unsigned int sco_num;
fcd89c09 122 unsigned int le_num;
f8218dc6 123 unsigned int le_num_slave;
1da177e4
LT		 124};
125
f0358568
JH		 126struct bdaddr_list {
127 struct list_head list;
128 bdaddr_t bdaddr;
b9ee0a78 129 u8 bdaddr_type;
f0358568 130};
2aeb9a1a 131
b950aa88
AN		 132struct bdaddr_list_with_irk {
133 struct list_head list;
134 bdaddr_t bdaddr;
135 u8 bdaddr_type;
136 u8 peer_irk[16];
137 u8 local_irk[16];
138};
139
8baaa403
APS		 140struct bdaddr_list_with_flags {
141 struct list_head list;
142 bdaddr_t bdaddr;
143 u8 bdaddr_type;
144 u32 current_flags;
145};
146
7a92906f
APS		 147enum hci_conn_flags {
148 HCI_CONN_FLAG_REMOTE_WAKEUP,
149 HCI_CONN_FLAG_MAX
150};
151
152#define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
153
154/* Make sure number of flags doesn't exceed sizeof(current_flags) */
155static_assert(HCI_CONN_FLAG_MAX < 32);
156
2aeb9a1a
JH		 157struct bt_uuid {
158 struct list_head list;
159 u8 uuid[16];
83be8eca 160 u8 size;
1aff6f09 161 u8 svc_hint;
2aeb9a1a
JH		 162};
163
600a8749
AM		 164struct blocked_key {
165 struct list_head list;
166 struct rcu_head rcu;
167 u8 type;
168 u8 val[16];
169};
170
7ee4ea36
MH		 171struct smp_csrk {
172 bdaddr_t bdaddr;
173 u8 bdaddr_type;
4cd3928a 174 u8 type;
7ee4ea36
MH		 175 u8 val[16];
176};
177
b899efaf
VCG		 178struct smp_ltk {
179 struct list_head list;
970d0f1b 180 struct rcu_head rcu;
b899efaf
VCG		 181 bdaddr_t bdaddr;
182 u8 bdaddr_type;
183 u8 authenticated;
184 u8 type;
185 u8 enc_size;
186 __le16 ediv;
fe39c7b2 187 __le64 rand;
b899efaf 188 u8 val[16];
03c515d7 189};
b899efaf 190
970c4e46
JH		 191struct smp_irk {
192 struct list_head list;
adae20cb 193 struct rcu_head rcu;
970c4e46
JH		 194 bdaddr_t rpa;
195 bdaddr_t bdaddr;
196 u8 addr_type;
197 u8 val[16];
198};
199
55ed8ca1
JH		 200struct link_key {
201 struct list_head list;
0378b597 202 struct rcu_head rcu;
55ed8ca1
JH		 203 bdaddr_t bdaddr;
204 u8 type;
9b3b4460 205 u8 val[HCI_LINK_KEY_SIZE];
55ed8ca1
JH		 206 u8 pin_len;
207};
208
2763eda6
SJ		 209struct oob_data {
210 struct list_head list;
211 bdaddr_t bdaddr;
6928a924 212 u8 bdaddr_type;
f7697b16 213 u8 present;
519ca9d0 214 u8 hash192[16];
38da1703 215 u8 rand192[16];
519ca9d0 216 u8 hash256[16];
38da1703 217 u8 rand256[16];
2763eda6
SJ		 218};
219
203fea01 220struct adv_info {
d2609b34 221 struct list_head list;
fffd38bc 222 bool pending;
203fea01
AU		 223 __u8 instance;
224 __u32 flags;
912098a6 225 __u16 timeout;
5d900e46 226 __u16 remaining_time;
d2609b34 227 __u16 duration;
203fea01
AU		 228 __u16 adv_data_len;
229 __u8 adv_data[HCI_MAX_AD_LENGTH];
230 __u16 scan_rsp_len;
231 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
de181e88 232 __s8 tx_power;
a73c046a
JK		 233 bdaddr_t random_addr;
234 bool rpa_expired;
235 struct delayed_work rpa_expired_cb;
203fea01
AU		 236};
237
db25be66 238#define HCI_MAX_ADV_INSTANCES 5
d2609b34
FG		 239#define HCI_DEFAULT_ADV_DURATION 2
240
e5e1e7fd
MC		 241struct adv_pattern {
242 struct list_head list;
243 __u8 ad_type;
244 __u8 offset;
245 __u8 length;
246 __u8 value[HCI_MAX_AD_LENGTH];
247};
248
249struct adv_monitor {
250 struct list_head patterns;
251 bool active;
252 __u16 handle;
253};
254
255#define HCI_MIN_ADV_MONITOR_HANDLE 1
256#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
257#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
258
490c5bab
JH		 259#define HCI_MAX_SHORT_NAME_LENGTH 10
260
d5bb334a
MH		 261/* Min encryption key size to match with SMP */
262#define HCI_MIN_ENC_KEY_SIZE 7
263
d6bfd59c
JH		 264/* Default LE RPA expiry time, 15 minutes */
265#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
266
31ad1691
AK		 267/* Default min/max age of connection information (1s/3s) */
268#define DEFAULT_CONN_INFO_MIN_AGE 1000
269#define DEFAULT_CONN_INFO_MAX_AGE 3000
302975cb
SRK		 270/* Default authenticated payload timeout 30s */
271#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
31ad1691 272
903e4541
AE		 273struct amp_assoc {
274 __u16 len;
275 __u16 offset;
93c284ee
AE		 276 __u16 rem_len;
277 __u16 len_so_far;
903e4541
AE		 278 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
279};
280
d2c5d77f 281#define HCI_MAX_PAGES 3
cad718ed 282
1da177e4
LT		 283struct hci_dev {
284 struct list_head list;
09fd0de5 285 struct mutex lock;
1da177e4
LT		 286
287 char name[8];
288 unsigned long flags;
289 __u16 id;
c13854ce 290 __u8 bus;
943da25d 291 __u8 dev_type;
1da177e4 292 bdaddr_t bdaddr;
e30d3f5f 293 bdaddr_t setup_addr;
24c457e2 294 bdaddr_t public_addr;
7a4cd51d 295 bdaddr_t random_addr;
d13eafce 296 bdaddr_t static_addr;
56ed2cb8 297 __u8 adv_addr_type;
1f6c6378 298 __u8 dev_name[HCI_MAX_NAME_LENGTH];
490c5bab 299 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
80a1e1db 300 __u8 eir[HCI_MAX_EIR_LENGTH];
c4960ecf 301 __u16 appearance;
a9de9248 302 __u8 dev_class[3];
1aff6f09
JH		 303 __u8 major_class;
304 __u8 minor_class;
d2c5d77f 305 __u8 max_page;
cad718ed 306 __u8 features[HCI_MAX_PAGES][8];
60e77321 307 __u8 le_features[8];
cf1d081f 308 __u8 le_white_list_size;
cfdb0c2d 309 __u8 le_resolv_list_size;
6b49bcb4 310 __u8 le_num_of_adv_sets;
9b008c04 311 __u8 le_states[8];
a9de9248 312 __u8 commands[64];
1143e5a6
MH		 313 __u8 hci_ver;
314 __u16 hci_rev;
d5859e22 315 __u8 lmp_ver;
1143e5a6 316 __u16 manufacturer;
7d69230c 317 __u16 lmp_subver;
1da177e4 318 __u16 voice_setting;
b4cb9fb2 319 __u8 num_iac;
c2f0f979
MH		 320 __u8 stored_max_keys;
321 __u8 stored_num_keys;
17fa4b9d 322 __u8 io_capability;
91c4e9b1 323 __s8 inq_tx_power;
00bce3fb 324 __u8 err_data_reporting;
f332ec66
JH		 325 __u16 page_scan_interval;
326 __u16 page_scan_window;
327 __u8 page_scan_type;
3f959d46 328 __u8 le_adv_channel_map;
628531c9
GL		 329 __u16 le_adv_min_interval;
330 __u16 le_adv_max_interval;
533553f8 331 __u8 le_scan_type;
bef64738
MH		 332 __u16 le_scan_interval;
333 __u16 le_scan_window;
10873f99
AM		 334 __u16 le_scan_int_suspend;
335 __u16 le_scan_window_suspend;
336 __u16 le_scan_int_discovery;
337 __u16 le_scan_window_discovery;
338 __u16 le_scan_int_adv_monitor;
339 __u16 le_scan_window_adv_monitor;
340 __u16 le_scan_int_connect;
341 __u16 le_scan_window_connect;
4e70c7e7
MH		 342 __u16 le_conn_min_interval;
343 __u16 le_conn_max_interval;
04fb7d90
MH		 344 __u16 le_conn_latency;
345 __u16 le_supv_timeout;
a8e1bfaa
MH		 346 __u16 le_def_tx_len;
347 __u16 le_def_tx_time;
348 __u16 le_max_tx_len;
349 __u16 le_max_tx_time;
350 __u16 le_max_rx_len;
351 __u16 le_max_rx_time;
30d65e08
MK		 352 __u8 le_max_key_size;
353 __u8 le_min_key_size;
b9a7a61e 354 __u16 discov_interleaved_timeout;
31ad1691
AK		 355 __u16 conn_info_min_age;
356 __u16 conn_info_max_age;
302975cb 357 __u16 auth_payload_timeout;
58a96fc3 358 __u8 min_enc_key_size;
a4790360
MH		 359 __u8 max_enc_key_size;
360 __u8 pairing_opts;
06f5b778 361 __u8 ssp_debug_mode;
c7741d16 362 __u8 hw_error_code;
33f35721 363 __u32 clock;
f332ec66 364
2b9be137
MH		 365 __u16 devid_source;
366 __u16 devid_vendor;
367 __u16 devid_product;
368 __u16 devid_version;
1da177e4 369
10873f99
AM		 370 __u8 def_page_scan_type;
371 __u16 def_page_scan_int;
372 __u16 def_page_scan_window;
373 __u8 def_inq_scan_type;
374 __u16 def_inq_scan_int;
375 __u16 def_inq_scan_window;
376 __u16 def_br_lsto;
377 __u16 def_page_timeout;
378 __u16 def_multi_adv_rotation_duration;
49b020c1 379 __u16 def_le_autoconnect_timeout;
10873f99 380
1da177e4 381 __u16 pkt_type;
5b7f9909 382 __u16 esco_type;
1da177e4
LT		 383 __u16 link_policy;
384 __u16 link_mode;
385
04837f64
MH		 386 __u32 idle_timeout;
387 __u16 sniff_min_interval;
388 __u16 sniff_max_interval;
389
928abaa7
AE		 390 __u8 amp_status;
391 __u32 amp_total_bw;
392 __u32 amp_max_bw;
393 __u32 amp_min_latency;
394 __u32 amp_max_pdu;
395 __u8 amp_type;
396 __u16 amp_pal_cap;
397 __u16 amp_assoc_size;
398 __u32 amp_max_flush_to;
399 __u32 amp_be_flush_to;
400
903e4541
AE		 401 struct amp_assoc loc_assoc;
402
1e89cffb
AE		 403 __u8 flow_ctl_mode;
404
9f61656a
JH		 405 unsigned int auto_accept_delay;
406
1da177e4
LT		 407 unsigned long quirks;
408
409 atomic_t cmd_cnt;
410 unsigned int acl_cnt;
411 unsigned int sco_cnt;
6ed58ec5 412 unsigned int le_cnt;
1da177e4
LT		 413
414 unsigned int acl_mtu;
415 unsigned int sco_mtu;
6ed58ec5 416 unsigned int le_mtu;
1da177e4
LT		 417 unsigned int acl_pkts;
418 unsigned int sco_pkts;
6ed58ec5 419 unsigned int le_pkts;
1da177e4 420
350ee4cf
AE		 421 __u16 block_len;
422 __u16 block_mtu;
423 __u16 num_blocks;
424 __u16 block_cnt;
425
1da177e4
LT		 426 unsigned long acl_last_tx;
427 unsigned long sco_last_tx;
6ed58ec5 428 unsigned long le_last_tx;
1da177e4 429
6decb5b4
JK		 430 __u8 le_tx_def_phys;
431 __u8 le_rx_def_phys;
432
f48fd9c8 433 struct workqueue_struct *workqueue;
6ead1bbc 434 struct workqueue_struct *req_workqueue;
f48fd9c8 435
ab81cbf9 436 struct work_struct power_on;
3243553f 437 struct delayed_work power_off;
c7741d16 438 struct work_struct error_reset;
ab81cbf9 439
16ab91ab
JH		 440 __u16 discov_timeout;
441 struct delayed_work discov_off;
442
7d78525d
JH		 443 struct delayed_work service_cache;
444
65cc2b49 445 struct delayed_work cmd_timer;
b78752cc
MH		 446
447 struct work_struct rx_work;
c347b765 448 struct work_struct cmd_work;
3eff45ea 449 struct work_struct tx_work;
1da177e4 450
e68f072b 451 struct work_struct discov_update;
2e93e53b 452 struct work_struct bg_scan_update;
01b1cb87 453 struct work_struct scan_update;
53c0ba74 454 struct work_struct connectable_update;
aed1a885 455 struct work_struct discoverable_update;
7c1fbed2
JH		 456 struct delayed_work le_scan_disable;
457 struct delayed_work le_scan_restart;
2e93e53b 458
1da177e4
LT		 459 struct sk_buff_head rx_q;
460 struct sk_buff_head raw_q;
461 struct sk_buff_head cmd_q;
462
463 struct sk_buff *sent_cmd;
464
a6a67efd 465 struct mutex req_lock;
1da177e4
LT		 466 wait_queue_head_t req_wait_q;
467 __u32 req_status;
468 __u32 req_result;
f60cb305 469 struct sk_buff *req_skb;
a5040efa 470
70db83c4 471 void *smp_data;
ef8efe4b 472 void *smp_bredr_data;
2e58ef3e 473
30883512 474 struct discovery_state discovery;
9952d90e 475
4867bd00
APS		 476 int discovery_old_state;
477 bool discovery_paused;
478 int advertising_old_state;
479 bool advertising_paused;
480
9952d90e
APS		 481 struct notifier_block suspend_notifier;
482 struct work_struct suspend_prepare;
483 enum suspended_state suspend_state_next;
484 enum suspended_state suspend_state;
4f40afc6
APS		 485 bool scanning_paused;
486 bool suspended;
2f20216c
APS		 487 u8 wake_reason;
488 bdaddr_t wake_addr;
489 u8 wake_addr_type;
9952d90e
APS		 490
491 wait_queue_head_t suspend_wait_q;
492 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
493
1da177e4
LT		 494 struct hci_conn_hash conn_hash;
495
5c136e90
AG		 496 struct list_head mgmt_pending;
497 struct list_head blacklist;
6659358e 498 struct list_head whitelist;
2aeb9a1a 499 struct list_head uuids;
55ed8ca1 500 struct list_head link_keys;
b899efaf 501 struct list_head long_term_keys;
970c4e46 502 struct list_head identity_resolving_keys;
2763eda6 503 struct list_head remote_oob_data;
d2ab0ac1 504 struct list_head le_white_list;
cfdb0c2d 505 struct list_head le_resolv_list;
15819a70 506 struct list_head le_conn_params;
77a77a30 507 struct list_head pend_le_conns;
66f8455a 508 struct list_head pend_le_reports;
600a8749 509 struct list_head blocked_keys;
2763eda6 510
1da177e4
LT		 511 struct hci_dev_stats stat;
512
70f23020 513 atomic_t promisc;
1da177e4 514
5177a838
MH		 515 const char *hw_info;
516 const char *fw_info;
ca325f69
MH		 517 struct dentry *debugfs;
518
a91f2e39 519 struct device dev;
1da177e4 520
611b30f7
MH		 521 struct rfkill *rfkill;
522
eacb44df 523 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
d23264a8 524
8fa19098 525 __s8 adv_tx_power;
3f0f524b
JH		 526 __u8 adv_data[HCI_MAX_AD_LENGTH];
527 __u8 adv_data_len;
f8e808bd
MH		 528 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
529 __u8 scan_rsp_data_len;
8fa19098 530
d2609b34
FG		 531 struct list_head adv_instances;
532 unsigned int adv_instance_cnt;
533 __u8 cur_adv_instance;
5d900e46
FG		 534 __u16 adv_instance_timeout;
535 struct delayed_work adv_instance_expire;
203fea01 536
e5e1e7fd
MC		 537 struct idr adv_monitors_idr;
538 unsigned int adv_monitors_cnt;
539
863efaf2 540 __u8 irk[16];
d6bfd59c
JH		 541 __u32 rpa_timeout;
542 struct delayed_work rpa_expired;
2b5224dc 543 bdaddr_t rpa;
863efaf2 544
53f863a6 545#if IS_ENABLED(CONFIG_BT_LEDS)
6d5d2ee6 546 struct led_trigger *power_led;
53f863a6 547#endif
6d5d2ee6 548
145373cb
MC		 549#if IS_ENABLED(CONFIG_BT_MSFTEXT)
550 __u16 msft_opcode;
551 void *msft_data;
552#endif
553
1da177e4
LT		 554 int (*open)(struct hci_dev *hdev);
555 int (*close)(struct hci_dev *hdev);
556 int (*flush)(struct hci_dev *hdev);
f41c70c4 557 int (*setup)(struct hci_dev *hdev);
a44fecbd 558 int (*shutdown)(struct hci_dev *hdev);
7bd8f09f 559 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
1da177e4 560 void (*notify)(struct hci_dev *hdev, unsigned int evt);
c7741d16 561 void (*hw_error)(struct hci_dev *hdev, u8 code);
98a63aaf 562 int (*post_init)(struct hci_dev *hdev);
4b4113d6 563 int (*set_diag)(struct hci_dev *hdev, bool enable);
24c457e2 564 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
e2bef384 565 void (*cmd_timeout)(struct hci_dev *hdev);
81dafad5 566 bool (*prevent_wake)(struct hci_dev *hdev);
1da177e4
LT		 567};
568
53502d69
AE		 569#define HCI_PHY_HANDLE(handle) (handle & 0xff)
570
76b13996
MM		 571enum conn_reasons {
572 CONN_REASON_PAIR_DEVICE,
573 CONN_REASON_L2CAP_CHAN,
574 CONN_REASON_SCO_CONNECT,
575};
576
1da177e4
LT		 577struct hci_conn {
578 struct list_head list;
579
adc4266d 580 atomic_t refcnt;
adc4266d
SJ		 581
582 bdaddr_t dst;
5a9d0a3f 583 __u8 dst_type;
662e8820 584 bdaddr_t src;
e7c4096e 585 __u8 src_type;
cb1d68f7
JH		 586 bdaddr_t init_addr;
587 __u8 init_addr_type;
588 bdaddr_t resp_addr;
589 __u8 resp_addr_type;
adc4266d
SJ		 590 __u16 handle;
591 __u16 state;
592 __u8 mode;
593 __u8 type;
40bef302 594 __u8 role;
a0c808b3 595 bool out;
adc4266d
SJ		 596 __u8 attempt;
597 __u8 dev_class[3];
cad718ed 598 __u8 features[HCI_MAX_PAGES][8];
adc4266d
SJ		 599 __u16 pkt_type;
600 __u16 link_policy;
13d39315 601 __u8 key_type;
adc4266d
SJ		 602 __u8 auth_type;
603 __u8 sec_level;
604 __u8 pending_sec_level;
605 __u8 pin_length;
726b4ffc 606 __u8 enc_key_size;
adc4266d 607 __u8 io_capability;
92a25256
JH		 608 __u32 passkey_notify;
609 __u8 passkey_entered;
adc4266d 610 __u16 disc_timeout;
09ae260b 611 __u16 conn_timeout;
10c62ddc 612 __u16 setting;
302975cb 613 __u16 auth_payload_timeout;
1e406eef
AG		 614 __u16 le_conn_min_interval;
615 __u16 le_conn_max_interval;
e04fde60
MH		 616 __u16 le_conn_interval;
617 __u16 le_conn_latency;
618 __u16 le_supv_timeout;
fd45ada9
AA		 619 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
620 __u8 le_adv_data_len;
1efd927d
LAD		 621 __u8 le_tx_phy;
622 __u8 le_rx_phy;
5ae76a94 623 __s8 rssi;
5a134fae 624 __s8 tx_power;
d0455ed9 625 __s8 max_tx_power;
51a8efd7 626 unsigned long flags;
04837f64 627
76b13996
MM		 628 enum conn_reasons conn_reason;
629
33f35721
JH		 630 __u32 clock;
631 __u16 clock_accuracy;
632
dd983808
AK		 633 unsigned long conn_info_timestamp;
634
03b555e1 635 __u8 remote_cap;
03b555e1 636 __u8 remote_auth;
3161ae1c 637 __u8 remote_id;
03b555e1 638
adc4266d 639 unsigned int sent;
04837f64 640
1da177e4 641 struct sk_buff_head data_q;
2c33c06a 642 struct list_head chan_list;
1da177e4 643
19c40e3b 644 struct delayed_work disc_work;
7bc18d9d 645 struct delayed_work auto_accept_work;
a74a84f6 646 struct delayed_work idle_work;
9489eca4 647 struct delayed_work le_conn_timeout;
8ce783dc 648 struct work_struct le_scan_cleanup;
04837f64 649
b219e3ac 650 struct device dev;
23b9ceb7 651 struct dentry *debugfs;
b219e3ac 652
1da177e4
LT		 653 struct hci_dev *hdev;
654 void *l2cap_data;
655 void *sco_data;
9740e49d 656 struct amp_mgr *amp_mgr;
1da177e4
LT		 657
658 struct hci_conn *link;
e9a416b5
JH		 659
660 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
661 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
662 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
1da177e4
LT		 663};
664
73d80deb
LAD		 665struct hci_chan {
666 struct list_head list;
42c4e53e 667 __u16 handle;
73d80deb
LAD		 668 struct hci_conn *conn;
669 struct sk_buff_head data_q;
670 unsigned int sent;
168df8e5 671 __u8 state;
73d80deb
LAD		 672};
673
15819a70
AG		 674struct hci_conn_params {
675 struct list_head list;
93450c75 676 struct list_head action;
15819a70
AG		 677
678 bdaddr_t addr;
679 u8 addr_type;
680
681 u16 conn_min_interval;
682 u16 conn_max_interval;
f044eb05
MH		 683 u16 conn_latency;
684 u16 supervision_timeout;
9fcb18ef
AG		 685
686 enum {
687 HCI_AUTO_CONN_DISABLED,
a3451d27 688 HCI_AUTO_CONN_REPORT,
4b9e7e75 689 HCI_AUTO_CONN_DIRECT,
9fcb18ef
AG		 690 HCI_AUTO_CONN_ALWAYS,
691 HCI_AUTO_CONN_LINK_LOSS,
158e9218 692 HCI_AUTO_CONN_EXPLICIT,
9fcb18ef 693 } auto_connect;
f161dd41
JH		 694
695 struct hci_conn *conn;
158e9218 696 bool explicit_connect;
a1fc7535 697 u32 current_flags;
15819a70
AG		 698};
699
1da177e4
LT		 700extern struct list_head hci_dev_list;
701extern struct list_head hci_cb_list;
702extern rwlock_t hci_dev_list_lock;
fba7ecf0 703extern struct mutex hci_cb_list_lock;
1da177e4 704
eacb44df
MH		 705#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
706#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
707#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
708#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
709#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
710#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
711#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
712
713#define hci_dev_clear_volatile_flags(hdev) \
714 do { \
715 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
716 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
2eb71a3a 717 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
eacb44df
MH		 718 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
719 } while (0)
516018a9 720
686ebf28 721/* ----- HCI interface to upper protocols ----- */
e74e58f8 722int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
e74e58f8 723int l2cap_disconn_ind(struct hci_conn *hcon);
9b4c3336 724void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
e74e58f8 725
ff50e8af 726#if IS_ENABLED(CONFIG_BT_BREDR)
e74e58f8 727int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
9b4c3336 728void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
ff50e8af
AW		 729#else
730static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
731 __u8 *flags)
732{
733 return 0;
734}
735
736static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
737{
738}
739#endif
686ebf28 740
1da177e4 741/* ----- Inquiry cache ----- */
70f23020
AE		 742#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
743#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
1da177e4 744
30883512 745static inline void discovery_init(struct hci_dev *hdev)
1da177e4 746{
ff9ef578 747 hdev->discovery.state = DISCOVERY_STOPPED;
30883512
JH		 748 INIT_LIST_HEAD(&hdev->discovery.all);
749 INIT_LIST_HEAD(&hdev->discovery.unknown);
750 INIT_LIST_HEAD(&hdev->discovery.resolve);
da25cf6a 751 hdev->discovery.report_invalid_rssi = true;
37eab042 752 hdev->discovery.rssi = HCI_RSSI_INVALID;
1da177e4
LT		 753}
754
0256325e
MH		 755static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
756{
82f8b651 757 hdev->discovery.result_filtering = false;
da25cf6a 758 hdev->discovery.report_invalid_rssi = true;
0256325e
MH		 759 hdev->discovery.rssi = HCI_RSSI_INVALID;
760 hdev->discovery.uuid_count = 0;
761 kfree(hdev->discovery.uuids);
762 hdev->discovery.uuids = NULL;
2d28cfe7
JP		 763 hdev->discovery.scan_start = 0;
764 hdev->discovery.scan_duration = 0;
0256325e
MH		 765}
766
30dc78e1
JH		 767bool hci_discovery_active(struct hci_dev *hdev);
768
ff9ef578
JH		 769void hci_discovery_set_state(struct hci_dev *hdev, int state);
770
1da177e4
LT		 771static inline int inquiry_cache_empty(struct hci_dev *hdev)
772{
30883512 773 return list_empty(&hdev->discovery.all);
1da177e4
LT		 774}
775
776static inline long inquiry_cache_age(struct hci_dev *hdev)
777{
30883512 778 struct discovery_state *c = &hdev->discovery;
1da177e4
LT		 779 return jiffies - c->timestamp;
780}
781
782static inline long inquiry_entry_age(struct inquiry_entry *e)
783{
784 return jiffies - e->timestamp;
785}
786
5a9d0a3f 787struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
04124681 788 bdaddr_t *bdaddr);
561aafbc 789struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
04124681 790 bdaddr_t *bdaddr);
30dc78e1 791struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
04124681
GP		 792 bdaddr_t *bdaddr,
793 int state);
a3d4e20a 794void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
04124681 795 struct inquiry_entry *ie);
af58925c
MH		 796u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
797 bool name_known);
1f9b9a5d 798void hci_inquiry_cache_flush(struct hci_dev *hdev);
1da177e4
LT		 799
800/* ----- HCI Connections ----- */
801enum {
802 HCI_CONN_AUTH_PEND,
19f8def0 803 HCI_CONN_REAUTH_PEND,
1da177e4 804 HCI_CONN_ENCRYPT_PEND,
04837f64
MH		 805 HCI_CONN_RSWITCH_PEND,
806 HCI_CONN_MODE_CHANGE_PEND,
e73439d8 807 HCI_CONN_SCO_SETUP_PEND,
b644ba33 808 HCI_CONN_MGMT_CONNECTED,
58a681ef 809 HCI_CONN_SSP_ENABLED,
eb9a8f3f 810 HCI_CONN_SC_ENABLED,
abf76bad 811 HCI_CONN_AES_CCM,
58a681ef 812 HCI_CONN_POWER_SAVE,
af6a9c32 813 HCI_CONN_FLUSH_KEY,
4dae2798
JH		 814 HCI_CONN_ENCRYPT,
815 HCI_CONN_AUTH,
816 HCI_CONN_SECURE,
817 HCI_CONN_FIPS,
fe59a05f 818 HCI_CONN_STK_ENCRYPT,
977f8fce 819 HCI_CONN_AUTH_INITIATOR,
f94b665d 820 HCI_CONN_DROP,
89cbb063 821 HCI_CONN_PARAM_REMOVAL_PEND,
fe8bc5ac 822 HCI_CONN_NEW_LINK_KEY,
158e9218 823 HCI_CONN_SCANNING,
160b9251 824 HCI_CONN_AUTH_FAILURE,
1da177e4
LT		 825};
826
aa64a8b5
JH		 827static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
828{
829 struct hci_dev *hdev = conn->hdev;
d7a5a11d 830 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
c3c7ea65 831 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
aa64a8b5
JH		 832}
833
eb9a8f3f
MH		 834static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
835{
836 struct hci_dev *hdev = conn->hdev;
d7a5a11d 837 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
eb9a8f3f
MH		 838 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
839}
840
1da177e4
LT		 841static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
842{
843 struct hci_conn_hash *h = &hdev->conn_hash;
bf4c6325 844 list_add_rcu(&c->list, &h->list);
fcd89c09
VT		 845 switch (c->type) {
846 case ACL_LINK:
1da177e4 847 h->acl_num++;
fcd89c09 848 break;
bd1eb66b
AE		 849 case AMP_LINK:
850 h->amp_num++;
851 break;
fcd89c09
VT		 852 case LE_LINK:
853 h->le_num++;
f8218dc6
JH		 854 if (c->role == HCI_ROLE_SLAVE)
855 h->le_num_slave++;
fcd89c09
VT		 856 break;
857 case SCO_LINK:
858 case ESCO_LINK:
1da177e4 859 h->sco_num++;
fcd89c09
VT		 860 break;
861 }
1da177e4
LT		 862}
863
864static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
865{
866 struct hci_conn_hash *h = &hdev->conn_hash;
bf4c6325
GP		 867
868 list_del_rcu(&c->list);
869 synchronize_rcu();
870
fcd89c09
VT		 871 switch (c->type) {
872 case ACL_LINK:
1da177e4 873 h->acl_num--;
fcd89c09 874 break;
bd1eb66b
AE		 875 case AMP_LINK:
876 h->amp_num--;
877 break;
fcd89c09
VT		 878 case LE_LINK:
879 h->le_num--;
f8218dc6
JH		 880 if (c->role == HCI_ROLE_SLAVE)
881 h->le_num_slave--;
fcd89c09
VT		 882 break;
883 case SCO_LINK:
884 case ESCO_LINK:
1da177e4 885 h->sco_num--;
fcd89c09
VT		 886 break;
887 }
1da177e4
LT		 888}
889
52087a79
LAD		 890static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
891{
892 struct hci_conn_hash *h = &hdev->conn_hash;
893 switch (type) {
894 case ACL_LINK:
895 return h->acl_num;
bd1eb66b
AE		 896 case AMP_LINK:
897 return h->amp_num;
52087a79
LAD		 898 case LE_LINK:
899 return h->le_num;
900 case SCO_LINK:
901 case ESCO_LINK:
902 return h->sco_num;
903 default:
904 return 0;
905 }
906}
907
f4f07505
JH		 908static inline unsigned int hci_conn_count(struct hci_dev *hdev)
909{
910 struct hci_conn_hash *c = &hdev->conn_hash;
911
912 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
913}
914
845472e8
MH		 915static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
916{
917 struct hci_conn_hash *h = &hdev->conn_hash;
918 struct hci_conn *c;
919 __u8 type = INVALID_LINK;
920
921 rcu_read_lock();
922
923 list_for_each_entry_rcu(c, &h->list, list) {
924 if (c->handle == handle) {
925 type = c->type;
926 break;
927 }
928 }
929
930 rcu_read_unlock();
931
932 return type;
933}
934
1da177e4 935static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
adc4266d 936 __u16 handle)
1da177e4
LT		 937{
938 struct hci_conn_hash *h = &hdev->conn_hash;
1da177e4
LT		 939 struct hci_conn *c;
940
bf4c6325
GP		 941 rcu_read_lock();
942
943 list_for_each_entry_rcu(c, &h->list, list) {
944 if (c->handle == handle) {
945 rcu_read_unlock();
1da177e4 946 return c;
bf4c6325 947 }
1da177e4 948 }
bf4c6325
GP		 949 rcu_read_unlock();
950
1da177e4
LT		 951 return NULL;
952}
953
954static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
adc4266d 955 __u8 type, bdaddr_t *ba)
1da177e4
LT		 956{
957 struct hci_conn_hash *h = &hdev->conn_hash;
1da177e4
LT		 958 struct hci_conn *c;
959
bf4c6325
GP		 960 rcu_read_lock();
961
962 list_for_each_entry_rcu(c, &h->list, list) {
963 if (c->type == type && !bacmp(&c->dst, ba)) {
964 rcu_read_unlock();
1da177e4 965 return c;
bf4c6325 966 }
1da177e4 967 }
bf4c6325
GP		 968
969 rcu_read_unlock();
970
1da177e4
LT		 971 return NULL;
972}
973
1b51c7b6
JH		 974static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
975 bdaddr_t *ba,
976 __u8 ba_type)
977{
978 struct hci_conn_hash *h = &hdev->conn_hash;
979 struct hci_conn *c;
980
981 rcu_read_lock();
982
983 list_for_each_entry_rcu(c, &h->list, list) {
984 if (c->type != LE_LINK)
985 continue;
986
987 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
988 rcu_read_unlock();
989 return c;
990 }
991 }
992
993 rcu_read_unlock();
994
995 return NULL;
996}
997
4c67bc74 998static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
adc4266d 999 __u8 type, __u16 state)
4c67bc74
MH		 1000{
1001 struct hci_conn_hash *h = &hdev->conn_hash;
4c67bc74
MH		 1002 struct hci_conn *c;
1003
bf4c6325
GP		 1004 rcu_read_lock();
1005
1006 list_for_each_entry_rcu(c, &h->list, list) {
1007 if (c->type == type && c->state == state) {
1008 rcu_read_unlock();
4c67bc74 1009 return c;
bf4c6325 1010 }
4c67bc74 1011 }
73d80deb 1012
bf4c6325 1013 rcu_read_unlock();
73d80deb 1014
4c67bc74 1015 return NULL;
73d80deb
LAD		 1016}
1017
e7d9ab73
JP		 1018static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
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 && c->state == BT_CONNECT &&
1027 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1028 rcu_read_unlock();
1029 return c;
1030 }
1031 }
1032
1033 rcu_read_unlock();
1034
1035 return NULL;
1036}
1037
e3b679d5 1038int hci_disconnect(struct hci_conn *conn, __u8 reason);
2dea632f 1039bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
e73439d8 1040void hci_sco_setup(struct hci_conn *conn, __u8 status);
1da177e4 1041
a5c4e309
JH		 1042struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1043 u8 role);
a9de9248
MH		 1044int hci_conn_del(struct hci_conn *conn);
1045void hci_conn_hash_flush(struct hci_dev *hdev);
1046void hci_conn_check_pending(struct hci_dev *hdev);
1da177e4 1047
73d80deb 1048struct hci_chan *hci_chan_create(struct hci_conn *conn);
9472007c 1049void hci_chan_del(struct hci_chan *chan);
2c33c06a 1050void hci_chan_list_flush(struct hci_conn *conn);
42c4e53e 1051struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
73d80deb 1052
f75113a2
JP		 1053struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1054 u8 dst_type, u8 sec_level,
76b13996
MM		 1055 u16 conn_timeout,
1056 enum conn_reasons conn_reason);
04a6c589 1057struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
cdd6275e 1058 u8 dst_type, u8 sec_level, u16 conn_timeout,
082f2300 1059 u8 role, bdaddr_t *direct_rpa);
04a6c589 1060struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
76b13996
MM		 1061 u8 sec_level, u8 auth_type,
1062 enum conn_reasons conn_reason);
10c62ddc
FD		 1063struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1064 __u16 setting);
e7c29cb1 1065int hci_conn_check_link_mode(struct hci_conn *conn);
b3b1b061 1066int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
e7cafc45
JH		 1067int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1068 bool initiator);
8c1b2355 1069int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1da177e4 1070
14b12d0b 1071void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1da177e4 1072
06c053fb
AG		 1073void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1074
8d12356f
DH		 1075/*
1076 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1077 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1078 * working or anything else. They just guarantee that the object is available
1079 * and can be dereferenced. So you can use its locks, local variables and any
1080 * other constant data.
1081 * Before accessing runtime data, you _must_ lock the object and then check that
1082 * it is still running. As soon as you release the locks, the connection might
1083 * get dropped, though.
1084 *
1085 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1086 * how long the underlying connection is held. So every channel that runs on the
1087 * hci_conn object calls this to prevent the connection from disappearing. As
1088 * long as you hold a device, you must also guarantee that you have a valid
1089 * reference to the device via hci_conn_get() (or the initial reference from
1090 * hci_conn_add()).
1091 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1092 * break because nobody cares for that. But this means, we cannot use
1093 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1094 */
1095
51bb8457 1096static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
8d12356f
DH		 1097{
1098 get_device(&conn->dev);
51bb8457 1099 return conn;
8d12356f
DH		 1100}
1101
1102static inline void hci_conn_put(struct hci_conn *conn)
1103{
1104 put_device(&conn->dev);
1105}
1106
1da177e4
LT		 1107static inline void hci_conn_hold(struct hci_conn *conn)
1108{
71becf0c 1109 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
38b3fef1 1110
1da177e4 1111 atomic_inc(&conn->refcnt);
2f304d1e 1112 cancel_delayed_work(&conn->disc_work);
1da177e4
LT		 1113}
1114
76a68ba0 1115static inline void hci_conn_drop(struct hci_conn *conn)
1da177e4 1116{
71becf0c 1117 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
38b3fef1 1118
1da177e4 1119 if (atomic_dec_and_test(&conn->refcnt)) {
04837f64 1120 unsigned long timeo;
716e4ab5
AE		 1121
1122 switch (conn->type) {
1123 case ACL_LINK:
1124 case LE_LINK:
a74a84f6 1125 cancel_delayed_work(&conn->idle_work);
6ac59344 1126 if (conn->state == BT_CONNECTED) {
5f246e89 1127 timeo = conn->disc_timeout;
6ac59344 1128 if (!conn->out)
052b30b0 1129 timeo *= 2;
5a9d0a3f 1130 } else {
eb78d7e5 1131 timeo = 0;
5a9d0a3f 1132 }
716e4ab5
AE		 1133 break;
1134
1135 case AMP_LINK:
1136 timeo = conn->disc_timeout;
1137 break;
1138
1139 default:
eb78d7e5 1140 timeo = 0;
716e4ab5 1141 break;
5a9d0a3f 1142 }
716e4ab5 1143
2f304d1e 1144 cancel_delayed_work(&conn->disc_work);
19c40e3b 1145 queue_delayed_work(conn->hdev->workqueue,
716e4ab5 1146 &conn->disc_work, timeo);
1da177e4
LT		 1147 }
1148}
1149
1da177e4 1150/* ----- HCI Devices ----- */
dc946bd8 1151static inline void hci_dev_put(struct hci_dev *d)
1da177e4 1152{
376261ae 1153 BT_DBG("%s orig refcnt %d", d->name,
2c935bc5 1154 kref_read(&d->dev.kobj.kref));
376261ae 1155
4c724c71 1156 put_device(&d->dev);
1da177e4
LT		 1157}
1158
dc946bd8 1159static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1da177e4 1160{
376261ae 1161 BT_DBG("%s orig refcnt %d", d->name,
2c935bc5 1162 kref_read(&d->dev.kobj.kref));
376261ae 1163
4c724c71 1164 get_device(&d->dev);
1da177e4
LT		 1165 return d;
1166}
1167
09fd0de5
GP		 1168#define hci_dev_lock(d) mutex_lock(&d->lock)
1169#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1da177e4 1170
aa2b86d7 1171#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
3dc07322 1172#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
aa2b86d7 1173
155961e8
DH		 1174static inline void *hci_get_drvdata(struct hci_dev *hdev)
1175{
1176 return dev_get_drvdata(&hdev->dev);
1177}
1178
1179static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1180{
1181 dev_set_drvdata(&hdev->dev, data);
1182}
1183
1da177e4 1184struct hci_dev *hci_dev_get(int index);
39385cb5 1185struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1da177e4
LT		 1186
1187struct hci_dev *hci_alloc_dev(void);
1188void hci_free_dev(struct hci_dev *hdev);
1189int hci_register_dev(struct hci_dev *hdev);
59735631 1190void hci_unregister_dev(struct hci_dev *hdev);
1da177e4
LT		 1191int hci_suspend_dev(struct hci_dev *hdev);
1192int hci_resume_dev(struct hci_dev *hdev);
75e0569f 1193int hci_reset_dev(struct hci_dev *hdev);
f962fe32
MH		 1194int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1195int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1aabbbce
NI		 1196__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1197__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
145373cb
MC		 1198
1199static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1200{
1201#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1202 hdev->msft_opcode = opcode;
1203#endif
1204}
1205
1da177e4
LT		 1206int hci_dev_open(__u16 dev);
1207int hci_dev_close(__u16 dev);
6b3cc1db 1208int hci_dev_do_close(struct hci_dev *hdev);
1da177e4
LT		 1209int hci_dev_reset(__u16 dev);
1210int hci_dev_reset_stat(__u16 dev);
1211int hci_dev_cmd(unsigned int cmd, void __user *arg);
1212int hci_get_dev_list(void __user *arg);
1213int hci_get_dev_info(void __user *arg);
1214int hci_get_conn_list(void __user *arg);
1215int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
40be492f 1216int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1da177e4
LT		 1217int hci_inquiry(void __user *arg);
1218
dcc36c16
JH		 1219struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1220 bdaddr_t *bdaddr, u8 type);
b950aa88
AN		 1221struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1222 struct list_head *list, bdaddr_t *bdaddr,
1223 u8 type);
8baaa403
APS		 1224struct bdaddr_list_with_flags *
1225hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1226 u8 type);
dcc36c16 1227int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
b950aa88 1228int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
8baaa403
APS		 1229 u8 type, u8 *peer_irk, u8 *local_irk);
1230int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1231 u8 type, u32 flags);
dcc36c16 1232int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
b950aa88 1233int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
8baaa403
APS		 1234 u8 type);
1235int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1236 u8 type);
dcc36c16 1237void hci_bdaddr_list_clear(struct list_head *list);
d2ab0ac1 1238
15819a70
AG		 1239struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1240 bdaddr_t *addr, u8 addr_type);
51d167c0
MH		 1241struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1242 bdaddr_t *addr, u8 addr_type);
15819a70 1243void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
55af49a8 1244void hci_conn_params_clear_disabled(struct hci_dev *hdev);
15819a70 1245
501f8827
JH		 1246struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1247 bdaddr_t *addr,
1248 u8 addr_type);
77a77a30 1249
35f7498a 1250void hci_uuids_clear(struct hci_dev *hdev);
2aeb9a1a 1251
35f7498a 1252void hci_link_keys_clear(struct hci_dev *hdev);
55ed8ca1 1253struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
567fa2aa 1254struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
7652ff6a
JH		 1255 bdaddr_t *bdaddr, u8 *val, u8 type,
1256 u8 pin_len, bool *persistent);
ca9142b8 1257struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
35d70271 1258 u8 addr_type, u8 type, u8 authenticated,
fe39c7b2 1259 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
f3a73d97
JH		 1260struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1261 u8 addr_type, u8 role);
e0b2b27e 1262int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
35f7498a 1263void hci_smp_ltks_clear(struct hci_dev *hdev);
55ed8ca1
JH		 1264int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1265
970c4e46
JH		 1266struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1267struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1268 u8 addr_type);
ca9142b8
JH		 1269struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1270 u8 addr_type, u8 val[16], bdaddr_t *rpa);
a7ec7338 1271void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
600a8749
AM		 1272bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1273void hci_blocked_keys_clear(struct hci_dev *hdev);
970c4e46
JH		 1274void hci_smp_irks_clear(struct hci_dev *hdev);
1275
55e76b38
JH		 1276bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1277
35f7498a 1278void hci_remote_oob_data_clear(struct hci_dev *hdev);
2763eda6 1279struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
6928a924 1280 bdaddr_t *bdaddr, u8 bdaddr_type);
0798872e 1281int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
6928a924 1282 u8 bdaddr_type, u8 *hash192, u8 *rand192,
81328d5c 1283 u8 *hash256, u8 *rand256);
6928a924
JH		 1284int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1285 u8 bdaddr_type);
2763eda6 1286
d2609b34
FG		 1287void hci_adv_instances_clear(struct hci_dev *hdev);
1288struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1289struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1290int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1291 u16 adv_data_len, u8 *adv_data,
1292 u16 scan_rsp_len, u8 *scan_rsp_data,
1293 u16 timeout, u16 duration);
1294int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
a73c046a 1295void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
d2609b34 1296
e5e1e7fd 1297void hci_adv_monitors_clear(struct hci_dev *hdev);
b139553d
MC		 1298void hci_free_adv_monitor(struct adv_monitor *monitor);
1299int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
bd2fbc6c 1300int hci_remove_adv_monitor(struct hci_dev *hdev, u16 handle);
8208f5a9 1301bool hci_is_adv_monitoring(struct hci_dev *hdev);
e5e1e7fd 1302
1da177e4
LT		 1303void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1304
0ac7e700 1305void hci_init_sysfs(struct hci_dev *hdev);
a67e899c 1306void hci_conn_init_sysfs(struct hci_conn *conn);
b219e3ac
MH		 1307void hci_conn_add_sysfs(struct hci_conn *conn);
1308void hci_conn_del_sysfs(struct hci_conn *conn);
1da177e4 1309
6935e0f5 1310#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1da177e4
LT		 1311
1312/* ----- LMP capabilities ----- */
cad718ed
JH		 1313#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1314#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1315#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1316#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1317#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1318#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1319#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1320#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1321#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1322#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1323#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1324#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1325#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1326#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1327#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1328#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1329#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1330#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
07a5c61e 1331#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
5075b972
JK		 1332#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1333#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1334#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1335#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1da177e4 1336
eead27da 1337/* ----- Extended LMP capabilities ----- */
53b834d2
MH		 1338#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1339#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1340#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1341#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
d5991585
MH		 1342#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1343#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
53b834d2
MH		 1344
1345/* ----- Host capabilities ----- */
cad718ed 1346#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
d5991585 1347#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
cad718ed
JH		 1348#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1349#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
eead27da 1350
d7a5a11d
MH		 1351#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1352 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1353#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1354 hci_dev_test_flag(dev, HCI_SC_ENABLED))
432df05e 1355
45bdd86e
JK		 1356#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1357 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1358
1359#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1360 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1361
1362#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1363 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1364
e1d57235
MH		 1365/* Use LL Privacy based address resolution if supported */
1366#define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1367
a2344b9e
JK		 1368/* Use ext scanning if set ext scan param and ext scan enable is supported */
1369#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1370 ((dev)->commands[37] & 0x40))
4d94f95d
JK		 1371/* Use ext create connection if command is supported */
1372#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
a2344b9e 1373
6b49bcb4
JK		 1374/* Extended advertising support */
1375#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1376
1da177e4 1377/* ----- HCI protocols ----- */
20714bfe
FD		 1378#define HCI_PROTO_DEFER 0x01
1379
5a9d0a3f 1380static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
20714bfe 1381 __u8 type, __u8 *flags)
1da177e4 1382{
686ebf28
UF		 1383 switch (type) {
1384 case ACL_LINK:
1385 return l2cap_connect_ind(hdev, bdaddr);
1da177e4 1386
686ebf28
UF		 1387 case SCO_LINK:
1388 case ESCO_LINK:
20714bfe 1389 return sco_connect_ind(hdev, bdaddr, flags);
1da177e4 1390
686ebf28
UF		 1391 default:
1392 BT_ERR("unknown link type %d", type);
1393 return -EINVAL;
1394 }
1da177e4
LT		 1395}
1396
2950f21a 1397static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1da177e4 1398{
686ebf28
UF		 1399 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1400 return HCI_ERROR_REMOTE_USER_TERM;
1da177e4 1401
686ebf28 1402 return l2cap_disconn_ind(conn);
2950f21a
MH		 1403}
1404
1da177e4
LT		 1405/* ----- HCI callbacks ----- */
1406struct hci_cb {
1407 struct list_head list;
1408
1409 char *name;
1410
539c496d 1411 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
3a6d576b 1412 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
5a9d0a3f
WR		 1413 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1414 __u8 encrypt);
1da177e4
LT		 1415 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1416 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1417};
1418
539c496d
JH		 1419static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1420{
1421 struct hci_cb *cb;
1422
1423 mutex_lock(&hci_cb_list_lock);
1424 list_for_each_entry(cb, &hci_cb_list, list) {
1425 if (cb->connect_cfm)
1426 cb->connect_cfm(conn, status);
1427 }
1428 mutex_unlock(&hci_cb_list_lock);
1429
1430 if (conn->connect_cfm_cb)
1431 conn->connect_cfm_cb(conn, status);
1432}
1433
3a6d576b
JH		 1434static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1435{
1436 struct hci_cb *cb;
1437
1438 mutex_lock(&hci_cb_list_lock);
1439 list_for_each_entry(cb, &hci_cb_list, list) {
1440 if (cb->disconn_cfm)
1441 cb->disconn_cfm(conn, reason);
1442 }
1443 mutex_unlock(&hci_cb_list_lock);
1444
1445 if (conn->disconn_cfm_cb)
1446 conn->disconn_cfm_cb(conn, reason);
1447}
1448
1da177e4
LT		 1449static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1450{
711584ea 1451 struct hci_cb *cb;
8c1b2355 1452 __u8 encrypt;
1da177e4 1453
51a8efd7 1454 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
8c1b2355
MH		 1455 return;
1456
4dae2798 1457 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
8c1b2355 1458
fba7ecf0 1459 mutex_lock(&hci_cb_list_lock);
711584ea 1460 list_for_each_entry(cb, &hci_cb_list, list) {
8c1b2355
MH		 1461 if (cb->security_cfm)
1462 cb->security_cfm(conn, status, encrypt);
1da177e4 1463 }
fba7ecf0 1464 mutex_unlock(&hci_cb_list_lock);
354fe804
JH		 1465
1466 if (conn->security_cfm_cb)
1467 conn->security_cfm_cb(conn, status);
1da177e4
LT		 1468}
1469
3ca44c16 1470static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1da177e4 1471{
711584ea 1472 struct hci_cb *cb;
3ca44c16
LAD		 1473 __u8 encrypt;
1474
1475 if (conn->state == BT_CONFIG) {
339ddaa6 1476 if (!status)
3ca44c16
LAD		 1477 conn->state = BT_CONNECTED;
1478
1479 hci_connect_cfm(conn, status);
1480 hci_conn_drop(conn);
1481 return;
1482 }
1483
1484 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1485 encrypt = 0x00;
1486 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1487 encrypt = 0x02;
1488 else
1489 encrypt = 0x01;
1da177e4 1490
8746f135
LAD		 1491 if (!status) {
1492 if (conn->sec_level == BT_SECURITY_SDP)
1493 conn->sec_level = BT_SECURITY_LOW;
435fef20 1494
8746f135
LAD		 1495 if (conn->pending_sec_level > conn->sec_level)
1496 conn->sec_level = conn->pending_sec_level;
1497 }
88167aed 1498
fba7ecf0 1499 mutex_lock(&hci_cb_list_lock);
711584ea 1500 list_for_each_entry(cb, &hci_cb_list, list) {
8c1b2355
MH		 1501 if (cb->security_cfm)
1502 cb->security_cfm(conn, status, encrypt);
1da177e4 1503 }
fba7ecf0 1504 mutex_unlock(&hci_cb_list_lock);
354fe804
JH		 1505
1506 if (conn->security_cfm_cb)
1507 conn->security_cfm_cb(conn, status);
1da177e4
LT		 1508}
1509
1510static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1511{
711584ea 1512 struct hci_cb *cb;
1da177e4 1513
fba7ecf0 1514 mutex_lock(&hci_cb_list_lock);
711584ea 1515 list_for_each_entry(cb, &hci_cb_list, list) {
1da177e4
LT		 1516 if (cb->key_change_cfm)
1517 cb->key_change_cfm(conn, status);
1518 }
fba7ecf0 1519 mutex_unlock(&hci_cb_list_lock);
1da177e4
LT		 1520}
1521
5a9d0a3f
WR		 1522static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1523 __u8 role)
1da177e4 1524{
711584ea 1525 struct hci_cb *cb;
1da177e4 1526
fba7ecf0 1527 mutex_lock(&hci_cb_list_lock);
711584ea 1528 list_for_each_entry(cb, &hci_cb_list, list) {
1da177e4
LT		 1529 if (cb->role_switch_cfm)
1530 cb->role_switch_cfm(conn, status, role);
1531 }
fba7ecf0 1532 mutex_unlock(&hci_cb_list_lock);
1da177e4
LT		 1533}
1534
0d3b7f64
JH		 1535static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1536 size_t *data_len)
6759a675 1537{
84d9d071 1538 size_t parsed = 0;
6759a675 1539
0d3b7f64
JH		 1540 if (eir_len < 2)
1541 return NULL;
6c0c331e 1542
0d3b7f64
JH		 1543 while (parsed < eir_len - 1) {
1544 u8 field_len = eir[0];
6759a675
JH		 1545
1546 if (field_len == 0)
1547 break;
1548
1549 parsed += field_len + 1;
1550
0d3b7f64 1551 if (parsed > eir_len)
6759a675
JH		 1552 break;
1553
0d3b7f64
JH		 1554 if (eir[1] != type) {
1555 eir += field_len + 1;
1556 continue;
1557 }
1558
1559 /* Zero length data */
1560 if (field_len == 1)
1561 return NULL;
6759a675 1562
0d3b7f64
JH		 1563 if (data_len)
1564 *data_len = field_len - 1;
1565
1566 return &eir[2];
6759a675
JH		 1567 }
1568
0d3b7f64 1569 return NULL;
6759a675
JH		 1570}
1571
301cb2d8
JH		 1572static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1573{
dbbfa2ab 1574 if (addr_type != ADDR_LE_DEV_RANDOM)
301cb2d8
JH		 1575 return false;
1576
1577 if ((bdaddr->b[5] & 0xc0) == 0x40)
1578 return true;
1579
1580 return false;
1581}
1582
c46245b3
JH		 1583static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1584{
1585 if (addr_type == ADDR_LE_DEV_PUBLIC)
1586 return true;
1587
1588 /* Check for Random Static address type */
1589 if ((addr->b[5] & 0xc0) == 0xc0)
1590 return true;
1591
1592 return false;
1593}
1594
2426f3a5
JH		 1595static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1596 bdaddr_t *bdaddr, u8 addr_type)
1597{
1598 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1599 return NULL;
1600
1601 return hci_find_irk_by_rpa(hdev, bdaddr);
1602}
1603
d4905f24
AG		 1604static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1605 u16 to_multiplier)
1606{
1607 u16 max_latency;
1608
1609 if (min > max || min < 6 || max > 3200)
1610 return -EINVAL;
1611
1612 if (to_multiplier < 10 || to_multiplier > 3200)
1613 return -EINVAL;
1614
1615 if (max >= to_multiplier * 8)
1616 return -EINVAL;
1617
8757825b 1618 max_latency = (to_multiplier * 4 / max) - 1;
d4905f24
AG		 1619 if (latency > 499 || latency > max_latency)
1620 return -EINVAL;
1621
1622 return 0;
1623}
1624
1da177e4
LT		 1625int hci_register_cb(struct hci_cb *hcb);
1626int hci_unregister_cb(struct hci_cb *hcb);
1627
75e84b7c 1628struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
07dc93dd 1629 const void *param, u32 timeout);
7b1abbbe 1630struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
07dc93dd 1631 const void *param, u8 event, u32 timeout);
d6ee6ad7
LP		 1632int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1633 const void *param);
75e84b7c 1634
07dc93dd
JH		 1635int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1636 const void *param);
73d80deb 1637void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
0d861d8b 1638void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1da177e4 1639
a9de9248 1640void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1da177e4 1641
fbef168f
LP		 1642struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1643 const void *param, u32 timeout);
1644
eab2404b
LAD		 1645u32 hci_conn_get_phy(struct hci_conn *conn);
1646
1da177e4 1647/* ----- HCI Sockets ----- */
470fe1b5 1648void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
7129069e 1649void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
c08b1a1d 1650 int flag, struct sock *skip_sk);
cd82e61c 1651void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
38ceaa00
MH		 1652void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1653 void *data, u16 data_len, ktime_t tstamp,
1654 int flag, struct sock *skip_sk);
1da177e4 1655
040030ef
MH		 1656void hci_sock_dev_event(struct hci_dev *hdev, int event);
1657
a958452a
MH		 1658#define HCI_MGMT_VAR_LEN BIT(0)
1659#define HCI_MGMT_NO_HDEV BIT(1)
1660#define HCI_MGMT_UNTRUSTED BIT(2)
1661#define HCI_MGMT_UNCONFIGURED BIT(3)
d5cc6626 1662#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
b9a245fb 1663
801c1e8d
JH		 1664struct hci_mgmt_handler {
1665 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1666 u16 data_len);
801c1e8d 1667 size_t data_len;
b9a245fb 1668 unsigned long flags;
801c1e8d
JH		 1669};
1670
1671struct hci_mgmt_chan {
1672 struct list_head list;
1673 unsigned short channel;
1674 size_t handler_count;
1675 const struct hci_mgmt_handler *handlers;
88b94ce9 1676 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
801c1e8d
JH		 1677};
1678
1679int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1680void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1681
0381101f 1682/* Management interface */
591f47f3
AG		 1683#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1684#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1685 BIT(BDADDR_LE_RANDOM))
1686#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1687 BIT(BDADDR_LE_PUBLIC) | \
1688 BIT(BDADDR_LE_RANDOM))
f39799f5 1689
0d8cc935
AG		 1690/* These LE scan and inquiry parameters were chosen according to LE General
1691 * Discovery Procedure specification.
1692 */
1693#define DISCOV_LE_SCAN_WIN 0x12
1694#define DISCOV_LE_SCAN_INT 0x12
3d5a76f0 1695#define DISCOV_LE_TIMEOUT 10240 /* msec */
ae55f598 1696#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
0d8cc935
AG		 1697#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1698#define DISCOV_BREDR_INQUIRY_LEN 0x08
4b0e0ced 1699#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
ad4a6795
SRK		 1700#define DISCOV_LE_FAST_ADV_INT_MIN 100 /* msec */
1701#define DISCOV_LE_FAST_ADV_INT_MAX 150 /* msec */
0d8cc935 1702
03c979c4 1703void mgmt_fill_version_info(void *ver);
91a668b0 1704int mgmt_new_settings(struct hci_dev *hdev);
bf6b56db
MH		 1705void mgmt_index_added(struct hci_dev *hdev);
1706void mgmt_index_removed(struct hci_dev *hdev);
3eec705e 1707void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2ff13894
JH		 1708void mgmt_power_on(struct hci_dev *hdev, int err);
1709void __mgmt_power_off(struct hci_dev *hdev);
dc4a5ee2
MH		 1710void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1711 bool persistent);
48ec92fa
AA		 1712void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1713 u32 flags, u8 *name, u8 name_len);
9b80ec5e 1714void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
12d4a3b2
JH		 1715 u8 link_type, u8 addr_type, u8 reason,
1716 bool mgmt_connected);
7892924c
MH		 1717void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1718 u8 link_type, u8 addr_type, u8 status);
445608d0
MH		 1719void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1720 u8 addr_type, u8 status);
ce0e4a0d 1721void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
e669cf80
MH		 1722void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1723 u8 status);
3eb38528
MH		 1724void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1725 u8 status);
744cf19e 1726int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
39adbffe 1727 u8 link_type, u8 addr_type, u32 value,
04124681 1728 u8 confirm_hint);
744cf19e 1729int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
04124681 1730 u8 link_type, u8 addr_type, u8 status);
272d90df 1731int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
04124681 1732 u8 link_type, u8 addr_type, u8 status);
272d90df 1733int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
04124681 1734 u8 link_type, u8 addr_type);
604086b7 1735int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
04124681 1736 u8 link_type, u8 addr_type, u8 status);
272d90df 1737int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
04124681 1738 u8 link_type, u8 addr_type, u8 status);
92a25256
JH		 1739int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1740 u8 link_type, u8 addr_type, u32 passkey,
1741 u8 entered);
e1e930f5 1742void mgmt_auth_failed(struct hci_conn *conn, u8 status);
464996ae 1743void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
3e248560 1744void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
4e1b0245
MH		 1745void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1746 u8 status);
7667da34 1747void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
e68f072b 1748void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2154d3f4 1749void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
901801b9 1750void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
af58925c
MH		 1751 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1752 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
9cf12aee
MH		 1753void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1754 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2f1e063b 1755void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
346ce5b7
APS		 1756void mgmt_suspending(struct hci_dev *hdev, u8 state);
1757void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
1758 u8 addr_type);
84c61d92 1759bool mgmt_powering_down(struct hci_dev *hdev);
53ac6ab6 1760void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
cad20c27 1761void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
53ac6ab6
MH		 1762void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1763 bool persistent);
ffb5a827 1764void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
f4869e2a
JH		 1765 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1766 u16 max_interval, u16 latency, u16 timeout);
f4a407be 1767void mgmt_smp_complete(struct hci_conn *conn, bool complete);
f2252570 1768bool mgmt_get_connectable(struct hci_dev *hdev);
53c0ba74 1769void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
aed1a885 1770void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
f2252570
JH		 1771u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1772void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1773 u8 instance);
1774void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1775 u8 instance);
b7c23df8 1776int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
346af67b 1777
7d6ca693
JH		 1778u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1779 u16 to_multiplier);
fe39c7b2 1780void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
8b76ce34 1781 __u8 ltk[16], __u8 key_size);
2519a1fc 1782
a1f4c318
JH		 1783void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1784 u8 *bdaddr_type);
ebd3a747 1785
5d4d62f6
FD		 1786#define SCO_AIRMODE_MASK 0x0003
1787#define SCO_AIRMODE_CVSD 0x0000
1788#define SCO_AIRMODE_TRANSP 0x0003
1789
1da177e4 1790#endif /* __HCI_CORE_H */
Linux 6.x block layer and io_uring tree(s)