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Revert "tty: hvc: Fix data abort due to race in hvc_open"
[linux/fpc-iii.git] / include / net / bluetooth / hci_core.h
blobd4e28773d378192717e4fe0d34c5d36192a65260
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 #ifndef __HCI_CORE_H
26 #define __HCI_CORE_H
27
28 #include <linux/leds.h>
29 #include <linux/rculist.h>
30
31 #include <net/bluetooth/hci.h>
32 #include <net/bluetooth/hci_sock.h>
33
34 /* HCI priority */
35 #define HCI_PRIO_MAX 7
36
37 /* HCI Core structures */
38 struct inquiry_data {
39 bdaddr_t bdaddr;
40 __u8 pscan_rep_mode;
41 __u8 pscan_period_mode;
42 __u8 pscan_mode;
43 __u8 dev_class[3];
44 __le16 clock_offset;
45 __s8 rssi;
46 __u8 ssp_mode;
47 };
48
49 struct inquiry_entry {
50 struct list_head all; /* inq_cache.all */
51 struct list_head list; /* unknown or resolve */
52 enum {
53 NAME_NOT_KNOWN,
54 NAME_NEEDED,
55 NAME_PENDING,
56 NAME_KNOWN,
57 } name_state;
58 __u32 timestamp;
59 struct inquiry_data data;
60 };
61
62 struct discovery_state {
63 int type;
64 enum {
65 DISCOVERY_STOPPED,
66 DISCOVERY_STARTING,
67 DISCOVERY_FINDING,
68 DISCOVERY_RESOLVING,
69 DISCOVERY_STOPPING,
70 } state;
71 struct list_head all; /* All devices found during inquiry */
72 struct list_head unknown; /* Name state not known */
73 struct list_head resolve; /* Name needs to be resolved */
74 __u32 timestamp;
75 bdaddr_t last_adv_addr;
76 u8 last_adv_addr_type;
77 s8 last_adv_rssi;
78 u32 last_adv_flags;
79 u8 last_adv_data[HCI_MAX_AD_LENGTH];
80 u8 last_adv_data_len;
81 bool report_invalid_rssi;
82 bool result_filtering;
83 bool limited;
84 s8 rssi;
85 u16 uuid_count;
86 u8 (*uuids)[16];
87 unsigned long scan_start;
88 unsigned long scan_duration;
89 };
90
91 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
92
93 enum suspend_tasks {
94 SUSPEND_PAUSE_DISCOVERY,
95 SUSPEND_UNPAUSE_DISCOVERY,
96
97 SUSPEND_PAUSE_ADVERTISING,
98 SUSPEND_UNPAUSE_ADVERTISING,
99
100 SUSPEND_SCAN_DISABLE,
101 SUSPEND_SCAN_ENABLE,
102 SUSPEND_DISCONNECTING,
103
104 SUSPEND_POWERING_DOWN,
105
106 SUSPEND_PREPARE_NOTIFIER,
107 __SUSPEND_NUM_TASKS
108 };
109
110 enum suspended_state {
111 BT_RUNNING = 0,
112 BT_SUSPEND_DISCONNECT,
113 BT_SUSPEND_COMPLETE,
114 };
115
116 struct hci_conn_hash {
117 struct list_head list;
118 unsigned int acl_num;
119 unsigned int amp_num;
120 unsigned int sco_num;
121 unsigned int le_num;
122 unsigned int le_num_slave;
123 };
124
125 struct bdaddr_list {
126 struct list_head list;
127 bdaddr_t bdaddr;
128 u8 bdaddr_type;
129 };
130
131 struct bdaddr_list_with_irk {
132 struct list_head list;
133 bdaddr_t bdaddr;
134 u8 bdaddr_type;
135 u8 peer_irk[16];
136 u8 local_irk[16];
137 };
138
139 struct bt_uuid {
140 struct list_head list;
141 u8 uuid[16];
142 u8 size;
143 u8 svc_hint;
144 };
145
146 struct blocked_key {
147 struct list_head list;
148 struct rcu_head rcu;
149 u8 type;
150 u8 val[16];
151 };
152
153 struct smp_csrk {
154 bdaddr_t bdaddr;
155 u8 bdaddr_type;
156 u8 type;
157 u8 val[16];
158 };
159
160 struct smp_ltk {
161 struct list_head list;
162 struct rcu_head rcu;
163 bdaddr_t bdaddr;
164 u8 bdaddr_type;
165 u8 authenticated;
166 u8 type;
167 u8 enc_size;
168 __le16 ediv;
169 __le64 rand;
170 u8 val[16];
171 };
172
173 struct smp_irk {
174 struct list_head list;
175 struct rcu_head rcu;
176 bdaddr_t rpa;
177 bdaddr_t bdaddr;
178 u8 addr_type;
179 u8 val[16];
180 };
181
182 struct link_key {
183 struct list_head list;
184 struct rcu_head rcu;
185 bdaddr_t bdaddr;
186 u8 type;
187 u8 val[HCI_LINK_KEY_SIZE];
188 u8 pin_len;
189 };
190
191 struct oob_data {
192 struct list_head list;
193 bdaddr_t bdaddr;
194 u8 bdaddr_type;
195 u8 present;
196 u8 hash192[16];
197 u8 rand192[16];
198 u8 hash256[16];
199 u8 rand256[16];
200 };
201
202 struct adv_info {
203 struct list_head list;
204 bool pending;
205 __u8 instance;
206 __u32 flags;
207 __u16 timeout;
208 __u16 remaining_time;
209 __u16 duration;
210 __u16 adv_data_len;
211 __u8 adv_data[HCI_MAX_AD_LENGTH];
212 __u16 scan_rsp_len;
213 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
214 __s8 tx_power;
215 bdaddr_t random_addr;
216 bool rpa_expired;
217 struct delayed_work rpa_expired_cb;
218 };
219
220 #define HCI_MAX_ADV_INSTANCES 5
221 #define HCI_DEFAULT_ADV_DURATION 2
222
223 #define HCI_MAX_SHORT_NAME_LENGTH 10
224
225 /* Min encryption key size to match with SMP */
226 #define HCI_MIN_ENC_KEY_SIZE 7
227
228 /* Default LE RPA expiry time, 15 minutes */
229 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
230
231 /* Default min/max age of connection information (1s/3s) */
232 #define DEFAULT_CONN_INFO_MIN_AGE 1000
233 #define DEFAULT_CONN_INFO_MAX_AGE 3000
234 /* Default authenticated payload timeout 30s */
235 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
236
237 struct amp_assoc {
238 __u16 len;
239 __u16 offset;
240 __u16 rem_len;
241 __u16 len_so_far;
242 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
243 };
244
245 #define HCI_MAX_PAGES 3
246
247 struct hci_dev {
248 struct list_head list;
249 struct mutex lock;
250
251 char name[8];
252 unsigned long flags;
253 __u16 id;
254 __u8 bus;
255 __u8 dev_type;
256 bdaddr_t bdaddr;
257 bdaddr_t setup_addr;
258 bdaddr_t public_addr;
259 bdaddr_t random_addr;
260 bdaddr_t static_addr;
261 __u8 adv_addr_type;
262 __u8 dev_name[HCI_MAX_NAME_LENGTH];
263 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
264 __u8 eir[HCI_MAX_EIR_LENGTH];
265 __u16 appearance;
266 __u8 dev_class[3];
267 __u8 major_class;
268 __u8 minor_class;
269 __u8 max_page;
270 __u8 features[HCI_MAX_PAGES][8];
271 __u8 le_features[8];
272 __u8 le_white_list_size;
273 __u8 le_resolv_list_size;
274 __u8 le_num_of_adv_sets;
275 __u8 le_states[8];
276 __u8 commands[64];
277 __u8 hci_ver;
278 __u16 hci_rev;
279 __u8 lmp_ver;
280 __u16 manufacturer;
281 __u16 lmp_subver;
282 __u16 voice_setting;
283 __u8 num_iac;
284 __u8 stored_max_keys;
285 __u8 stored_num_keys;
286 __u8 io_capability;
287 __s8 inq_tx_power;
288 __u8 err_data_reporting;
289 __u16 page_scan_interval;
290 __u16 page_scan_window;
291 __u8 page_scan_type;
292 __u8 le_adv_channel_map;
293 __u16 le_adv_min_interval;
294 __u16 le_adv_max_interval;
295 __u8 le_scan_type;
296 __u16 le_scan_interval;
297 __u16 le_scan_window;
298 __u16 le_conn_min_interval;
299 __u16 le_conn_max_interval;
300 __u16 le_conn_latency;
301 __u16 le_supv_timeout;
302 __u16 le_def_tx_len;
303 __u16 le_def_tx_time;
304 __u16 le_max_tx_len;
305 __u16 le_max_tx_time;
306 __u16 le_max_rx_len;
307 __u16 le_max_rx_time;
308 __u8 le_max_key_size;
309 __u8 le_min_key_size;
310 __u16 discov_interleaved_timeout;
311 __u16 conn_info_min_age;
312 __u16 conn_info_max_age;
313 __u16 auth_payload_timeout;
314 __u8 min_enc_key_size;
315 __u8 ssp_debug_mode;
316 __u8 hw_error_code;
317 __u32 clock;
318
319 __u16 devid_source;
320 __u16 devid_vendor;
321 __u16 devid_product;
322 __u16 devid_version;
323
324 __u16 pkt_type;
325 __u16 esco_type;
326 __u16 link_policy;
327 __u16 link_mode;
328
329 __u32 idle_timeout;
330 __u16 sniff_min_interval;
331 __u16 sniff_max_interval;
332
333 __u8 amp_status;
334 __u32 amp_total_bw;
335 __u32 amp_max_bw;
336 __u32 amp_min_latency;
337 __u32 amp_max_pdu;
338 __u8 amp_type;
339 __u16 amp_pal_cap;
340 __u16 amp_assoc_size;
341 __u32 amp_max_flush_to;
342 __u32 amp_be_flush_to;
343
344 struct amp_assoc loc_assoc;
345
346 __u8 flow_ctl_mode;
347
348 unsigned int auto_accept_delay;
349
350 unsigned long quirks;
351
352 atomic_t cmd_cnt;
353 unsigned int acl_cnt;
354 unsigned int sco_cnt;
355 unsigned int le_cnt;
356
357 unsigned int acl_mtu;
358 unsigned int sco_mtu;
359 unsigned int le_mtu;
360 unsigned int acl_pkts;
361 unsigned int sco_pkts;
362 unsigned int le_pkts;
363
364 __u16 block_len;
365 __u16 block_mtu;
366 __u16 num_blocks;
367 __u16 block_cnt;
368
369 unsigned long acl_last_tx;
370 unsigned long sco_last_tx;
371 unsigned long le_last_tx;
372
373 __u8 le_tx_def_phys;
374 __u8 le_rx_def_phys;
375
376 struct workqueue_struct *workqueue;
377 struct workqueue_struct *req_workqueue;
378
379 struct work_struct power_on;
380 struct delayed_work power_off;
381 struct work_struct error_reset;
382
383 __u16 discov_timeout;
384 struct delayed_work discov_off;
385
386 struct delayed_work service_cache;
387
388 struct delayed_work cmd_timer;
389
390 struct work_struct rx_work;
391 struct work_struct cmd_work;
392 struct work_struct tx_work;
393
394 struct work_struct discov_update;
395 struct work_struct bg_scan_update;
396 struct work_struct scan_update;
397 struct work_struct connectable_update;
398 struct work_struct discoverable_update;
399 struct delayed_work le_scan_disable;
400 struct delayed_work le_scan_restart;
401
402 struct sk_buff_head rx_q;
403 struct sk_buff_head raw_q;
404 struct sk_buff_head cmd_q;
405
406 struct sk_buff *sent_cmd;
407
408 struct mutex req_lock;
409 wait_queue_head_t req_wait_q;
410 __u32 req_status;
411 __u32 req_result;
412 struct sk_buff *req_skb;
413
414 void *smp_data;
415 void *smp_bredr_data;
416
417 struct discovery_state discovery;
418
419 int discovery_old_state;
420 bool discovery_paused;
421 int advertising_old_state;
422 bool advertising_paused;
423
424 struct notifier_block suspend_notifier;
425 struct work_struct suspend_prepare;
426 enum suspended_state suspend_state_next;
427 enum suspended_state suspend_state;
428 bool scanning_paused;
429 bool suspended;
430
431 wait_queue_head_t suspend_wait_q;
432 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
433
434 struct hci_conn_hash conn_hash;
435
436 struct list_head mgmt_pending;
437 struct list_head blacklist;
438 struct list_head whitelist;
439 struct list_head wakeable;
440 struct list_head uuids;
441 struct list_head link_keys;
442 struct list_head long_term_keys;
443 struct list_head identity_resolving_keys;
444 struct list_head remote_oob_data;
445 struct list_head le_white_list;
446 struct list_head le_resolv_list;
447 struct list_head le_conn_params;
448 struct list_head pend_le_conns;
449 struct list_head pend_le_reports;
450 struct list_head blocked_keys;
451
452 struct hci_dev_stats stat;
453
454 atomic_t promisc;
455
456 const char *hw_info;
457 const char *fw_info;
458 struct dentry *debugfs;
459
460 struct device dev;
461
462 struct rfkill *rfkill;
463
464 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
465
466 __s8 adv_tx_power;
467 __u8 adv_data[HCI_MAX_AD_LENGTH];
468 __u8 adv_data_len;
469 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
470 __u8 scan_rsp_data_len;
471
472 struct list_head adv_instances;
473 unsigned int adv_instance_cnt;
474 __u8 cur_adv_instance;
475 __u16 adv_instance_timeout;
476 struct delayed_work adv_instance_expire;
477
478 __u8 irk[16];
479 __u32 rpa_timeout;
480 struct delayed_work rpa_expired;
481 bdaddr_t rpa;
482
483 #if IS_ENABLED(CONFIG_BT_LEDS)
484 struct led_trigger *power_led;
485 #endif
486
487 int (*open)(struct hci_dev *hdev);
488 int (*close)(struct hci_dev *hdev);
489 int (*flush)(struct hci_dev *hdev);
490 int (*setup)(struct hci_dev *hdev);
491 int (*shutdown)(struct hci_dev *hdev);
492 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
493 void (*notify)(struct hci_dev *hdev, unsigned int evt);
494 void (*hw_error)(struct hci_dev *hdev, u8 code);
495 int (*post_init)(struct hci_dev *hdev);
496 int (*set_diag)(struct hci_dev *hdev, bool enable);
497 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
498 void (*cmd_timeout)(struct hci_dev *hdev);
499 };
500
501 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
502
503 struct hci_conn {
504 struct list_head list;
505
506 atomic_t refcnt;
507
508 bdaddr_t dst;
509 __u8 dst_type;
510 bdaddr_t src;
511 __u8 src_type;
512 bdaddr_t init_addr;
513 __u8 init_addr_type;
514 bdaddr_t resp_addr;
515 __u8 resp_addr_type;
516 __u16 handle;
517 __u16 state;
518 __u8 mode;
519 __u8 type;
520 __u8 role;
521 bool out;
522 __u8 attempt;
523 __u8 dev_class[3];
524 __u8 features[HCI_MAX_PAGES][8];
525 __u16 pkt_type;
526 __u16 link_policy;
527 __u8 key_type;
528 __u8 auth_type;
529 __u8 sec_level;
530 __u8 pending_sec_level;
531 __u8 pin_length;
532 __u8 enc_key_size;
533 __u8 io_capability;
534 __u32 passkey_notify;
535 __u8 passkey_entered;
536 __u16 disc_timeout;
537 __u16 conn_timeout;
538 __u16 setting;
539 __u16 auth_payload_timeout;
540 __u16 le_conn_min_interval;
541 __u16 le_conn_max_interval;
542 __u16 le_conn_interval;
543 __u16 le_conn_latency;
544 __u16 le_supv_timeout;
545 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
546 __u8 le_adv_data_len;
547 __u8 le_tx_phy;
548 __u8 le_rx_phy;
549 __s8 rssi;
550 __s8 tx_power;
551 __s8 max_tx_power;
552 unsigned long flags;
553
554 __u32 clock;
555 __u16 clock_accuracy;
556
557 unsigned long conn_info_timestamp;
558
559 __u8 remote_cap;
560 __u8 remote_auth;
561 __u8 remote_id;
562
563 unsigned int sent;
564
565 struct sk_buff_head data_q;
566 struct list_head chan_list;
567
568 struct delayed_work disc_work;
569 struct delayed_work auto_accept_work;
570 struct delayed_work idle_work;
571 struct delayed_work le_conn_timeout;
572 struct work_struct le_scan_cleanup;
573
574 struct device dev;
575 struct dentry *debugfs;
576
577 struct hci_dev *hdev;
578 void *l2cap_data;
579 void *sco_data;
580 struct amp_mgr *amp_mgr;
581
582 struct hci_conn *link;
583
584 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
585 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
586 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
587 };
588
589 struct hci_chan {
590 struct list_head list;
591 __u16 handle;
592 struct hci_conn *conn;
593 struct sk_buff_head data_q;
594 unsigned int sent;
595 __u8 state;
596 };
597
598 struct hci_conn_params {
599 struct list_head list;
600 struct list_head action;
601
602 bdaddr_t addr;
603 u8 addr_type;
604
605 u16 conn_min_interval;
606 u16 conn_max_interval;
607 u16 conn_latency;
608 u16 supervision_timeout;
609
610 enum {
611 HCI_AUTO_CONN_DISABLED,
612 HCI_AUTO_CONN_REPORT,
613 HCI_AUTO_CONN_DIRECT,
614 HCI_AUTO_CONN_ALWAYS,
615 HCI_AUTO_CONN_LINK_LOSS,
616 HCI_AUTO_CONN_EXPLICIT,
617 } auto_connect;
618
619 struct hci_conn *conn;
620 bool explicit_connect;
621 bool wakeable;
622 };
623
624 extern struct list_head hci_dev_list;
625 extern struct list_head hci_cb_list;
626 extern rwlock_t hci_dev_list_lock;
627 extern struct mutex hci_cb_list_lock;
628
629 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
630 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
631 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
632 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
633 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
634 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
635 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
636
637 #define hci_dev_clear_volatile_flags(hdev) \
638 do { \
639 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
640 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
641 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
642 } while (0)
643
644 /* ----- HCI interface to upper protocols ----- */
645 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
646 int l2cap_disconn_ind(struct hci_conn *hcon);
647 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
648
649 #if IS_ENABLED(CONFIG_BT_BREDR)
650 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
651 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
652 #else
653 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
654 __u8 *flags)
655 {
656 return 0;
657 }
658
659 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
660 {
661 }
662 #endif
663
664 /* ----- Inquiry cache ----- */
665 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
666 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
667
668 static inline void discovery_init(struct hci_dev *hdev)
669 {
670 hdev->discovery.state = DISCOVERY_STOPPED;
671 INIT_LIST_HEAD(&hdev->discovery.all);
672 INIT_LIST_HEAD(&hdev->discovery.unknown);
673 INIT_LIST_HEAD(&hdev->discovery.resolve);
674 hdev->discovery.report_invalid_rssi = true;
675 hdev->discovery.rssi = HCI_RSSI_INVALID;
676 }
677
678 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
679 {
680 hdev->discovery.result_filtering = false;
681 hdev->discovery.report_invalid_rssi = true;
682 hdev->discovery.rssi = HCI_RSSI_INVALID;
683 hdev->discovery.uuid_count = 0;
684 kfree(hdev->discovery.uuids);
685 hdev->discovery.uuids = NULL;
686 hdev->discovery.scan_start = 0;
687 hdev->discovery.scan_duration = 0;
688 }
689
690 bool hci_discovery_active(struct hci_dev *hdev);
691
692 void hci_discovery_set_state(struct hci_dev *hdev, int state);
693
694 static inline int inquiry_cache_empty(struct hci_dev *hdev)
695 {
696 return list_empty(&hdev->discovery.all);
697 }
698
699 static inline long inquiry_cache_age(struct hci_dev *hdev)
700 {
701 struct discovery_state *c = &hdev->discovery;
702 return jiffies - c->timestamp;
703 }
704
705 static inline long inquiry_entry_age(struct inquiry_entry *e)
706 {
707 return jiffies - e->timestamp;
708 }
709
710 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
711 bdaddr_t *bdaddr);
712 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
713 bdaddr_t *bdaddr);
714 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
715 bdaddr_t *bdaddr,
716 int state);
717 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
718 struct inquiry_entry *ie);
719 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
720 bool name_known);
721 void hci_inquiry_cache_flush(struct hci_dev *hdev);
722
723 /* ----- HCI Connections ----- */
724 enum {
725 HCI_CONN_AUTH_PEND,
726 HCI_CONN_REAUTH_PEND,
727 HCI_CONN_ENCRYPT_PEND,
728 HCI_CONN_RSWITCH_PEND,
729 HCI_CONN_MODE_CHANGE_PEND,
730 HCI_CONN_SCO_SETUP_PEND,
731 HCI_CONN_MGMT_CONNECTED,
732 HCI_CONN_SSP_ENABLED,
733 HCI_CONN_SC_ENABLED,
734 HCI_CONN_AES_CCM,
735 HCI_CONN_POWER_SAVE,
736 HCI_CONN_FLUSH_KEY,
737 HCI_CONN_ENCRYPT,
738 HCI_CONN_AUTH,
739 HCI_CONN_SECURE,
740 HCI_CONN_FIPS,
741 HCI_CONN_STK_ENCRYPT,
742 HCI_CONN_AUTH_INITIATOR,
743 HCI_CONN_DROP,
744 HCI_CONN_PARAM_REMOVAL_PEND,
745 HCI_CONN_NEW_LINK_KEY,
746 HCI_CONN_SCANNING,
747 HCI_CONN_AUTH_FAILURE,
748 };
749
750 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
751 {
752 struct hci_dev *hdev = conn->hdev;
753 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
754 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
755 }
756
757 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
758 {
759 struct hci_dev *hdev = conn->hdev;
760 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
761 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
762 }
763
764 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
765 {
766 struct hci_conn_hash *h = &hdev->conn_hash;
767 list_add_rcu(&c->list, &h->list);
768 switch (c->type) {
769 case ACL_LINK:
770 h->acl_num++;
771 break;
772 case AMP_LINK:
773 h->amp_num++;
774 break;
775 case LE_LINK:
776 h->le_num++;
777 if (c->role == HCI_ROLE_SLAVE)
778 h->le_num_slave++;
779 break;
780 case SCO_LINK:
781 case ESCO_LINK:
782 h->sco_num++;
783 break;
784 }
785 }
786
787 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
788 {
789 struct hci_conn_hash *h = &hdev->conn_hash;
790
791 list_del_rcu(&c->list);
792 synchronize_rcu();
793
794 switch (c->type) {
795 case ACL_LINK:
796 h->acl_num--;
797 break;
798 case AMP_LINK:
799 h->amp_num--;
800 break;
801 case LE_LINK:
802 h->le_num--;
803 if (c->role == HCI_ROLE_SLAVE)
804 h->le_num_slave--;
805 break;
806 case SCO_LINK:
807 case ESCO_LINK:
808 h->sco_num--;
809 break;
810 }
811 }
812
813 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
814 {
815 struct hci_conn_hash *h = &hdev->conn_hash;
816 switch (type) {
817 case ACL_LINK:
818 return h->acl_num;
819 case AMP_LINK:
820 return h->amp_num;
821 case LE_LINK:
822 return h->le_num;
823 case SCO_LINK:
824 case ESCO_LINK:
825 return h->sco_num;
826 default:
827 return 0;
828 }
829 }
830
831 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
832 {
833 struct hci_conn_hash *c = &hdev->conn_hash;
834
835 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
836 }
837
838 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
839 {
840 struct hci_conn_hash *h = &hdev->conn_hash;
841 struct hci_conn *c;
842 __u8 type = INVALID_LINK;
843
844 rcu_read_lock();
845
846 list_for_each_entry_rcu(c, &h->list, list) {
847 if (c->handle == handle) {
848 type = c->type;
849 break;
850 }
851 }
852
853 rcu_read_unlock();
854
855 return type;
856 }
857
858 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
859 __u16 handle)
860 {
861 struct hci_conn_hash *h = &hdev->conn_hash;
862 struct hci_conn *c;
863
864 rcu_read_lock();
865
866 list_for_each_entry_rcu(c, &h->list, list) {
867 if (c->handle == handle) {
868 rcu_read_unlock();
869 return c;
870 }
871 }
872 rcu_read_unlock();
873
874 return NULL;
875 }
876
877 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
878 __u8 type, bdaddr_t *ba)
879 {
880 struct hci_conn_hash *h = &hdev->conn_hash;
881 struct hci_conn *c;
882
883 rcu_read_lock();
884
885 list_for_each_entry_rcu(c, &h->list, list) {
886 if (c->type == type && !bacmp(&c->dst, ba)) {
887 rcu_read_unlock();
888 return c;
889 }
890 }
891
892 rcu_read_unlock();
893
894 return NULL;
895 }
896
897 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
898 bdaddr_t *ba,
899 __u8 ba_type)
900 {
901 struct hci_conn_hash *h = &hdev->conn_hash;
902 struct hci_conn *c;
903
904 rcu_read_lock();
905
906 list_for_each_entry_rcu(c, &h->list, list) {
907 if (c->type != LE_LINK)
908 continue;
909
910 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
911 rcu_read_unlock();
912 return c;
913 }
914 }
915
916 rcu_read_unlock();
917
918 return NULL;
919 }
920
921 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
922 __u8 type, __u16 state)
923 {
924 struct hci_conn_hash *h = &hdev->conn_hash;
925 struct hci_conn *c;
926
927 rcu_read_lock();
928
929 list_for_each_entry_rcu(c, &h->list, list) {
930 if (c->type == type && c->state == state) {
931 rcu_read_unlock();
932 return c;
933 }
934 }
935
936 rcu_read_unlock();
937
938 return NULL;
939 }
940
941 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
942 {
943 struct hci_conn_hash *h = &hdev->conn_hash;
944 struct hci_conn *c;
945
946 rcu_read_lock();
947
948 list_for_each_entry_rcu(c, &h->list, list) {
949 if (c->type == LE_LINK && c->state == BT_CONNECT &&
950 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
951 rcu_read_unlock();
952 return c;
953 }
954 }
955
956 rcu_read_unlock();
957
958 return NULL;
959 }
960
961 int hci_disconnect(struct hci_conn *conn, __u8 reason);
962 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
963 void hci_sco_setup(struct hci_conn *conn, __u8 status);
964
965 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
966 u8 role);
967 int hci_conn_del(struct hci_conn *conn);
968 void hci_conn_hash_flush(struct hci_dev *hdev);
969 void hci_conn_check_pending(struct hci_dev *hdev);
970
971 struct hci_chan *hci_chan_create(struct hci_conn *conn);
972 void hci_chan_del(struct hci_chan *chan);
973 void hci_chan_list_flush(struct hci_conn *conn);
974 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
975
976 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
977 u8 dst_type, u8 sec_level,
978 u16 conn_timeout);
979 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
980 u8 dst_type, u8 sec_level, u16 conn_timeout,
981 u8 role, bdaddr_t *direct_rpa);
982 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
983 u8 sec_level, u8 auth_type);
984 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
985 __u16 setting);
986 int hci_conn_check_link_mode(struct hci_conn *conn);
987 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
988 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
989 bool initiator);
990 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
991
992 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
993
994 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
995
996 /*
997 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
998 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
999 * working or anything else. They just guarantee that the object is available
1000 * and can be dereferenced. So you can use its locks, local variables and any
1001 * other constant data.
1002 * Before accessing runtime data, you _must_ lock the object and then check that
1003 * it is still running. As soon as you release the locks, the connection might
1004 * get dropped, though.
1005 *
1006 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1007 * how long the underlying connection is held. So every channel that runs on the
1008 * hci_conn object calls this to prevent the connection from disappearing. As
1009 * long as you hold a device, you must also guarantee that you have a valid
1010 * reference to the device via hci_conn_get() (or the initial reference from
1011 * hci_conn_add()).
1012 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1013 * break because nobody cares for that. But this means, we cannot use
1014 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1015 */
1016
1017 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1018 {
1019 get_device(&conn->dev);
1020 return conn;
1021 }
1022
1023 static inline void hci_conn_put(struct hci_conn *conn)
1024 {
1025 put_device(&conn->dev);
1026 }
1027
1028 static inline void hci_conn_hold(struct hci_conn *conn)
1029 {
1030 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1031
1032 atomic_inc(&conn->refcnt);
1033 cancel_delayed_work(&conn->disc_work);
1034 }
1035
1036 static inline void hci_conn_drop(struct hci_conn *conn)
1037 {
1038 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1039
1040 if (atomic_dec_and_test(&conn->refcnt)) {
1041 unsigned long timeo;
1042
1043 switch (conn->type) {
1044 case ACL_LINK:
1045 case LE_LINK:
1046 cancel_delayed_work(&conn->idle_work);
1047 if (conn->state == BT_CONNECTED) {
1048 timeo = conn->disc_timeout;
1049 if (!conn->out)
1050 timeo *= 2;
1051 } else {
1052 timeo = 0;
1053 }
1054 break;
1055
1056 case AMP_LINK:
1057 timeo = conn->disc_timeout;
1058 break;
1059
1060 default:
1061 timeo = 0;
1062 break;
1063 }
1064
1065 cancel_delayed_work(&conn->disc_work);
1066 queue_delayed_work(conn->hdev->workqueue,
1067 &conn->disc_work, timeo);
1068 }
1069 }
1070
1071 /* ----- HCI Devices ----- */
1072 static inline void hci_dev_put(struct hci_dev *d)
1073 {
1074 BT_DBG("%s orig refcnt %d", d->name,
1075 kref_read(&d->dev.kobj.kref));
1076
1077 put_device(&d->dev);
1078 }
1079
1080 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1081 {
1082 BT_DBG("%s orig refcnt %d", d->name,
1083 kref_read(&d->dev.kobj.kref));
1084
1085 get_device(&d->dev);
1086 return d;
1087 }
1088
1089 #define hci_dev_lock(d) mutex_lock(&d->lock)
1090 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1091
1092 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1093 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1094
1095 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1096 {
1097 return dev_get_drvdata(&hdev->dev);
1098 }
1099
1100 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1101 {
1102 dev_set_drvdata(&hdev->dev, data);
1103 }
1104
1105 struct hci_dev *hci_dev_get(int index);
1106 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1107
1108 struct hci_dev *hci_alloc_dev(void);
1109 void hci_free_dev(struct hci_dev *hdev);
1110 int hci_register_dev(struct hci_dev *hdev);
1111 void hci_unregister_dev(struct hci_dev *hdev);
1112 int hci_suspend_dev(struct hci_dev *hdev);
1113 int hci_resume_dev(struct hci_dev *hdev);
1114 int hci_reset_dev(struct hci_dev *hdev);
1115 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1116 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1117 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1118 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1119 int hci_dev_open(__u16 dev);
1120 int hci_dev_close(__u16 dev);
1121 int hci_dev_do_close(struct hci_dev *hdev);
1122 int hci_dev_reset(__u16 dev);
1123 int hci_dev_reset_stat(__u16 dev);
1124 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1125 int hci_get_dev_list(void __user *arg);
1126 int hci_get_dev_info(void __user *arg);
1127 int hci_get_conn_list(void __user *arg);
1128 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1129 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1130 int hci_inquiry(void __user *arg);
1131
1132 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1133 bdaddr_t *bdaddr, u8 type);
1134 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1135 struct list_head *list, bdaddr_t *bdaddr,
1136 u8 type);
1137 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1138 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1139 u8 type, u8 *peer_irk, u8 *local_irk);
1140 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1141 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1142 u8 type);
1143 void hci_bdaddr_list_clear(struct list_head *list);
1144
1145 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1146 bdaddr_t *addr, u8 addr_type);
1147 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1148 bdaddr_t *addr, u8 addr_type);
1149 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1150 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1151
1152 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1153 bdaddr_t *addr,
1154 u8 addr_type);
1155
1156 void hci_uuids_clear(struct hci_dev *hdev);
1157
1158 void hci_link_keys_clear(struct hci_dev *hdev);
1159 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1160 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1161 bdaddr_t *bdaddr, u8 *val, u8 type,
1162 u8 pin_len, bool *persistent);
1163 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1164 u8 addr_type, u8 type, u8 authenticated,
1165 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1166 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1167 u8 addr_type, u8 role);
1168 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1169 void hci_smp_ltks_clear(struct hci_dev *hdev);
1170 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1171
1172 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1173 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1174 u8 addr_type);
1175 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1176 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1177 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1178 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1179 void hci_blocked_keys_clear(struct hci_dev *hdev);
1180 void hci_smp_irks_clear(struct hci_dev *hdev);
1181
1182 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1183
1184 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1185 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1186 bdaddr_t *bdaddr, u8 bdaddr_type);
1187 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1188 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1189 u8 *hash256, u8 *rand256);
1190 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1191 u8 bdaddr_type);
1192
1193 void hci_adv_instances_clear(struct hci_dev *hdev);
1194 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1195 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1196 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1197 u16 adv_data_len, u8 *adv_data,
1198 u16 scan_rsp_len, u8 *scan_rsp_data,
1199 u16 timeout, u16 duration);
1200 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1201 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1202
1203 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1204
1205 void hci_init_sysfs(struct hci_dev *hdev);
1206 void hci_conn_init_sysfs(struct hci_conn *conn);
1207 void hci_conn_add_sysfs(struct hci_conn *conn);
1208 void hci_conn_del_sysfs(struct hci_conn *conn);
1209
1210 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1211
1212 /* ----- LMP capabilities ----- */
1213 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1214 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1215 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1216 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1217 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1218 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1219 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1220 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1221 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1222 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1223 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1224 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1225 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1226 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1227 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1228 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1229 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1230 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1231 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1232 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1233 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1234 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1235 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1236
1237 /* ----- Extended LMP capabilities ----- */
1238 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1239 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1240 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1241 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1242 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1243 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1244
1245 /* ----- Host capabilities ----- */
1246 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1247 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1248 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1249 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1250
1251 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1252 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1253 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1254 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1255
1256 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1257 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1258
1259 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1260 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1261
1262 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1263 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1264
1265 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1266 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1267 ((dev)->commands[37] & 0x40))
1268 /* Use ext create connection if command is supported */
1269 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1270
1271 /* Extended advertising support */
1272 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1273
1274 /* ----- HCI protocols ----- */
1275 #define HCI_PROTO_DEFER 0x01
1276
1277 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1278 __u8 type, __u8 *flags)
1279 {
1280 switch (type) {
1281 case ACL_LINK:
1282 return l2cap_connect_ind(hdev, bdaddr);
1283
1284 case SCO_LINK:
1285 case ESCO_LINK:
1286 return sco_connect_ind(hdev, bdaddr, flags);
1287
1288 default:
1289 BT_ERR("unknown link type %d", type);
1290 return -EINVAL;
1291 }
1292 }
1293
1294 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1295 {
1296 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1297 return HCI_ERROR_REMOTE_USER_TERM;
1298
1299 return l2cap_disconn_ind(conn);
1300 }
1301
1302 /* ----- HCI callbacks ----- */
1303 struct hci_cb {
1304 struct list_head list;
1305
1306 char *name;
1307
1308 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1309 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1310 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1311 __u8 encrypt);
1312 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1313 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1314 };
1315
1316 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1317 {
1318 struct hci_cb *cb;
1319
1320 mutex_lock(&hci_cb_list_lock);
1321 list_for_each_entry(cb, &hci_cb_list, list) {
1322 if (cb->connect_cfm)
1323 cb->connect_cfm(conn, status);
1324 }
1325 mutex_unlock(&hci_cb_list_lock);
1326
1327 if (conn->connect_cfm_cb)
1328 conn->connect_cfm_cb(conn, status);
1329 }
1330
1331 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1332 {
1333 struct hci_cb *cb;
1334
1335 mutex_lock(&hci_cb_list_lock);
1336 list_for_each_entry(cb, &hci_cb_list, list) {
1337 if (cb->disconn_cfm)
1338 cb->disconn_cfm(conn, reason);
1339 }
1340 mutex_unlock(&hci_cb_list_lock);
1341
1342 if (conn->disconn_cfm_cb)
1343 conn->disconn_cfm_cb(conn, reason);
1344 }
1345
1346 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1347 {
1348 struct hci_cb *cb;
1349 __u8 encrypt;
1350
1351 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1352 return;
1353
1354 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1355
1356 mutex_lock(&hci_cb_list_lock);
1357 list_for_each_entry(cb, &hci_cb_list, list) {
1358 if (cb->security_cfm)
1359 cb->security_cfm(conn, status, encrypt);
1360 }
1361 mutex_unlock(&hci_cb_list_lock);
1362
1363 if (conn->security_cfm_cb)
1364 conn->security_cfm_cb(conn, status);
1365 }
1366
1367 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1368 __u8 encrypt)
1369 {
1370 struct hci_cb *cb;
1371
1372 if (conn->sec_level == BT_SECURITY_SDP)
1373 conn->sec_level = BT_SECURITY_LOW;
1374
1375 if (conn->pending_sec_level > conn->sec_level)
1376 conn->sec_level = conn->pending_sec_level;
1377
1378 mutex_lock(&hci_cb_list_lock);
1379 list_for_each_entry(cb, &hci_cb_list, list) {
1380 if (cb->security_cfm)
1381 cb->security_cfm(conn, status, encrypt);
1382 }
1383 mutex_unlock(&hci_cb_list_lock);
1384
1385 if (conn->security_cfm_cb)
1386 conn->security_cfm_cb(conn, status);
1387 }
1388
1389 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1390 {
1391 struct hci_cb *cb;
1392
1393 mutex_lock(&hci_cb_list_lock);
1394 list_for_each_entry(cb, &hci_cb_list, list) {
1395 if (cb->key_change_cfm)
1396 cb->key_change_cfm(conn, status);
1397 }
1398 mutex_unlock(&hci_cb_list_lock);
1399 }
1400
1401 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1402 __u8 role)
1403 {
1404 struct hci_cb *cb;
1405
1406 mutex_lock(&hci_cb_list_lock);
1407 list_for_each_entry(cb, &hci_cb_list, list) {
1408 if (cb->role_switch_cfm)
1409 cb->role_switch_cfm(conn, status, role);
1410 }
1411 mutex_unlock(&hci_cb_list_lock);
1412 }
1413
1414 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1415 size_t *data_len)
1416 {
1417 size_t parsed = 0;
1418
1419 if (eir_len < 2)
1420 return NULL;
1421
1422 while (parsed < eir_len - 1) {
1423 u8 field_len = eir[0];
1424
1425 if (field_len == 0)
1426 break;
1427
1428 parsed += field_len + 1;
1429
1430 if (parsed > eir_len)
1431 break;
1432
1433 if (eir[1] != type) {
1434 eir += field_len + 1;
1435 continue;
1436 }
1437
1438 /* Zero length data */
1439 if (field_len == 1)
1440 return NULL;
1441
1442 if (data_len)
1443 *data_len = field_len - 1;
1444
1445 return &eir[2];
1446 }
1447
1448 return NULL;
1449 }
1450
1451 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1452 {
1453 if (addr_type != ADDR_LE_DEV_RANDOM)
1454 return false;
1455
1456 if ((bdaddr->b[5] & 0xc0) == 0x40)
1457 return true;
1458
1459 return false;
1460 }
1461
1462 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1463 {
1464 if (addr_type == ADDR_LE_DEV_PUBLIC)
1465 return true;
1466
1467 /* Check for Random Static address type */
1468 if ((addr->b[5] & 0xc0) == 0xc0)
1469 return true;
1470
1471 return false;
1472 }
1473
1474 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1475 bdaddr_t *bdaddr, u8 addr_type)
1476 {
1477 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1478 return NULL;
1479
1480 return hci_find_irk_by_rpa(hdev, bdaddr);
1481 }
1482
1483 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1484 u16 to_multiplier)
1485 {
1486 u16 max_latency;
1487
1488 if (min > max || min < 6 || max > 3200)
1489 return -EINVAL;
1490
1491 if (to_multiplier < 10 || to_multiplier > 3200)
1492 return -EINVAL;
1493
1494 if (max >= to_multiplier * 8)
1495 return -EINVAL;
1496
1497 max_latency = (to_multiplier * 4 / max) - 1;
1498 if (latency > 499 || latency > max_latency)
1499 return -EINVAL;
1500
1501 return 0;
1502 }
1503
1504 int hci_register_cb(struct hci_cb *hcb);
1505 int hci_unregister_cb(struct hci_cb *hcb);
1506
1507 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1508 const void *param, u32 timeout);
1509 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1510 const void *param, u8 event, u32 timeout);
1511 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1512 const void *param);
1513
1514 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1515 const void *param);
1516 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1517 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1518
1519 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1520
1521 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1522 const void *param, u32 timeout);
1523
1524 u32 hci_conn_get_phy(struct hci_conn *conn);
1525
1526 /* ----- HCI Sockets ----- */
1527 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1528 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1529 int flag, struct sock *skip_sk);
1530 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1531 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1532 void *data, u16 data_len, ktime_t tstamp,
1533 int flag, struct sock *skip_sk);
1534
1535 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1536
1537 #define HCI_MGMT_VAR_LEN BIT(0)
1538 #define HCI_MGMT_NO_HDEV BIT(1)
1539 #define HCI_MGMT_UNTRUSTED BIT(2)
1540 #define HCI_MGMT_UNCONFIGURED BIT(3)
1541
1542 struct hci_mgmt_handler {
1543 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1544 u16 data_len);
1545 size_t data_len;
1546 unsigned long flags;
1547 };
1548
1549 struct hci_mgmt_chan {
1550 struct list_head list;
1551 unsigned short channel;
1552 size_t handler_count;
1553 const struct hci_mgmt_handler *handlers;
1554 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1555 };
1556
1557 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1558 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1559
1560 /* Management interface */
1561 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1562 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1563 BIT(BDADDR_LE_RANDOM))
1564 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1565 BIT(BDADDR_LE_PUBLIC) | \
1566 BIT(BDADDR_LE_RANDOM))
1567
1568 /* These LE scan and inquiry parameters were chosen according to LE General
1569 * Discovery Procedure specification.
1570 */
1571 #define DISCOV_LE_SCAN_WIN 0x12
1572 #define DISCOV_LE_SCAN_INT 0x12
1573 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1574 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1575 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1576 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1577 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1578 #define DISCOV_LE_FAST_ADV_INT_MIN 100 /* msec */
1579 #define DISCOV_LE_FAST_ADV_INT_MAX 150 /* msec */
1580
1581 void mgmt_fill_version_info(void *ver);
1582 int mgmt_new_settings(struct hci_dev *hdev);
1583 void mgmt_index_added(struct hci_dev *hdev);
1584 void mgmt_index_removed(struct hci_dev *hdev);
1585 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1586 void mgmt_power_on(struct hci_dev *hdev, int err);
1587 void __mgmt_power_off(struct hci_dev *hdev);
1588 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1589 bool persistent);
1590 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1591 u32 flags, u8 *name, u8 name_len);
1592 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1593 u8 link_type, u8 addr_type, u8 reason,
1594 bool mgmt_connected);
1595 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1596 u8 link_type, u8 addr_type, u8 status);
1597 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1598 u8 addr_type, u8 status);
1599 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1600 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1601 u8 status);
1602 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1603 u8 status);
1604 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1605 u8 link_type, u8 addr_type, u32 value,
1606 u8 confirm_hint);
1607 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1608 u8 link_type, u8 addr_type, u8 status);
1609 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1610 u8 link_type, u8 addr_type, u8 status);
1611 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1612 u8 link_type, u8 addr_type);
1613 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1614 u8 link_type, u8 addr_type, u8 status);
1615 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1616 u8 link_type, u8 addr_type, u8 status);
1617 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1618 u8 link_type, u8 addr_type, u32 passkey,
1619 u8 entered);
1620 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1621 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1622 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1623 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1624 u8 status);
1625 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1626 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1627 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1628 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1629 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1630 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1631 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1632 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1633 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1634 bool mgmt_powering_down(struct hci_dev *hdev);
1635 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1636 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1637 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1638 bool persistent);
1639 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1640 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1641 u16 max_interval, u16 latency, u16 timeout);
1642 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1643 bool mgmt_get_connectable(struct hci_dev *hdev);
1644 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1645 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1646 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1647 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1648 u8 instance);
1649 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1650 u8 instance);
1651 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1652
1653 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1654 u16 to_multiplier);
1655 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1656 __u8 ltk[16], __u8 key_size);
1657
1658 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1659 u8 *bdaddr_type);
1660
1661 #define SCO_AIRMODE_MASK 0x0003
1662 #define SCO_AIRMODE_CVSD 0x0000
1663 #define SCO_AIRMODE_TRANSP 0x0003
1664
1665 #endif /* __HCI_CORE_H */
Linux with added FPC-III support