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25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <linux/idr.h>
29#include <linux/leds.h>
30#include <linux/rculist.h>
31
32#include <net/bluetooth/hci.h>
33#include <net/bluetooth/hci_sock.h>
34
35
36#define HCI_PRIO_MAX 7
37
38
39struct inquiry_data {
40 bdaddr_t bdaddr;
41 __u8 pscan_rep_mode;
42 __u8 pscan_period_mode;
43 __u8 pscan_mode;
44 __u8 dev_class[3];
45 __le16 clock_offset;
46 __s8 rssi;
47 __u8 ssp_mode;
48};
49
50struct inquiry_entry {
51 struct list_head all;
52 struct list_head list;
53 enum {
54 NAME_NOT_KNOWN,
55 NAME_NEEDED,
56 NAME_PENDING,
57 NAME_KNOWN,
58 } name_state;
59 __u32 timestamp;
60 struct inquiry_data data;
61};
62
63struct discovery_state {
64 int type;
65 enum {
66 DISCOVERY_STOPPED,
67 DISCOVERY_STARTING,
68 DISCOVERY_FINDING,
69 DISCOVERY_RESOLVING,
70 DISCOVERY_STOPPING,
71 } state;
72 struct list_head all;
73 struct list_head unknown;
74 struct list_head resolve;
75 __u32 timestamp;
76 bdaddr_t last_adv_addr;
77 u8 last_adv_addr_type;
78 s8 last_adv_rssi;
79 u32 last_adv_flags;
80 u8 last_adv_data[HCI_MAX_AD_LENGTH];
81 u8 last_adv_data_len;
82 bool report_invalid_rssi;
83 bool result_filtering;
84 bool limited;
85 s8 rssi;
86 u16 uuid_count;
87 u8 (*uuids)[16];
88 unsigned long scan_start;
89 unsigned long scan_duration;
90};
91
92#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000)
93
94enum suspend_tasks {
95 SUSPEND_PAUSE_DISCOVERY,
96 SUSPEND_UNPAUSE_DISCOVERY,
97
98 SUSPEND_PAUSE_ADVERTISING,
99 SUSPEND_UNPAUSE_ADVERTISING,
100
101 SUSPEND_SCAN_DISABLE,
102 SUSPEND_SCAN_ENABLE,
103 SUSPEND_DISCONNECTING,
104
105 SUSPEND_POWERING_DOWN,
106
107 SUSPEND_PREPARE_NOTIFIER,
108 __SUSPEND_NUM_TASKS
109};
110
111enum suspended_state {
112 BT_RUNNING = 0,
113 BT_SUSPEND_DISCONNECT,
114 BT_SUSPEND_CONFIGURE_WAKE,
115};
116
117struct hci_conn_hash {
118 struct list_head list;
119 unsigned int acl_num;
120 unsigned int amp_num;
121 unsigned int sco_num;
122 unsigned int le_num;
123 unsigned int le_num_slave;
124};
125
126struct bdaddr_list {
127 struct list_head list;
128 bdaddr_t bdaddr;
129 u8 bdaddr_type;
130};
131
132struct bdaddr_list_with_irk {
133 struct list_head list;
134 bdaddr_t bdaddr;
135 u8 bdaddr_type;
136 u8 peer_irk[16];
137 u8 local_irk[16];
138};
139
140struct bdaddr_list_with_flags {
141 struct list_head list;
142 bdaddr_t bdaddr;
143 u8 bdaddr_type;
144 u32 current_flags;
145};
146
147enum hci_conn_flags {
148 HCI_CONN_FLAG_REMOTE_WAKEUP,
149 HCI_CONN_FLAG_MAX
150};
151
152#define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
153
154
155static_assert(HCI_CONN_FLAG_MAX < 32);
156
157struct bt_uuid {
158 struct list_head list;
159 u8 uuid[16];
160 u8 size;
161 u8 svc_hint;
162};
163
164struct blocked_key {
165 struct list_head list;
166 struct rcu_head rcu;
167 u8 type;
168 u8 val[16];
169};
170
171struct smp_csrk {
172 bdaddr_t bdaddr;
173 u8 bdaddr_type;
174 u8 type;
175 u8 val[16];
176};
177
178struct smp_ltk {
179 struct list_head list;
180 struct rcu_head rcu;
181 bdaddr_t bdaddr;
182 u8 bdaddr_type;
183 u8 authenticated;
184 u8 type;
185 u8 enc_size;
186 __le16 ediv;
187 __le64 rand;
188 u8 val[16];
189};
190
191struct smp_irk {
192 struct list_head list;
193 struct rcu_head rcu;
194 bdaddr_t rpa;
195 bdaddr_t bdaddr;
196 u8 addr_type;
197 u8 val[16];
198};
199
200struct link_key {
201 struct list_head list;
202 struct rcu_head rcu;
203 bdaddr_t bdaddr;
204 u8 type;
205 u8 val[HCI_LINK_KEY_SIZE];
206 u8 pin_len;
207};
208
209struct oob_data {
210 struct list_head list;
211 bdaddr_t bdaddr;
212 u8 bdaddr_type;
213 u8 present;
214 u8 hash192[16];
215 u8 rand192[16];
216 u8 hash256[16];
217 u8 rand256[16];
218};
219
220struct adv_info {
221 struct list_head list;
222 bool pending;
223 __u8 instance;
224 __u32 flags;
225 __u16 timeout;
226 __u16 remaining_time;
227 __u16 duration;
228 __u16 adv_data_len;
229 __u8 adv_data[HCI_MAX_AD_LENGTH];
230 __u16 scan_rsp_len;
231 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
232 __s8 tx_power;
233 bdaddr_t random_addr;
234 bool rpa_expired;
235 struct delayed_work rpa_expired_cb;
236};
237
238#define HCI_MAX_ADV_INSTANCES 5
239#define HCI_DEFAULT_ADV_DURATION 2
240
241struct adv_pattern {
242 struct list_head list;
243 __u8 ad_type;
244 __u8 offset;
245 __u8 length;
246 __u8 value[HCI_MAX_AD_LENGTH];
247};
248
249struct adv_monitor {
250 struct list_head patterns;
251 bool active;
252 __u16 handle;
253};
254
255#define HCI_MIN_ADV_MONITOR_HANDLE 1
256#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
257#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
258
259#define HCI_MAX_SHORT_NAME_LENGTH 10
260
261
262#define HCI_MIN_ENC_KEY_SIZE 7
263
264
265#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
266
267
268#define DEFAULT_CONN_INFO_MIN_AGE 1000
269#define DEFAULT_CONN_INFO_MAX_AGE 3000
270
271#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
272
273struct amp_assoc {
274 __u16 len;
275 __u16 offset;
276 __u16 rem_len;
277 __u16 len_so_far;
278 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
279};
280
281#define HCI_MAX_PAGES 3
282
283struct hci_dev {
284 struct list_head list;
285 struct mutex lock;
286
287 char name[8];
288 unsigned long flags;
289 __u16 id;
290 __u8 bus;
291 __u8 dev_type;
292 bdaddr_t bdaddr;
293 bdaddr_t setup_addr;
294 bdaddr_t public_addr;
295 bdaddr_t random_addr;
296 bdaddr_t static_addr;
297 __u8 adv_addr_type;
298 __u8 dev_name[HCI_MAX_NAME_LENGTH];
299 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
300 __u8 eir[HCI_MAX_EIR_LENGTH];
301 __u16 appearance;
302 __u8 dev_class[3];
303 __u8 major_class;
304 __u8 minor_class;
305 __u8 max_page;
306 __u8 features[HCI_MAX_PAGES][8];
307 __u8 le_features[8];
308 __u8 le_white_list_size;
309 __u8 le_resolv_list_size;
310 __u8 le_num_of_adv_sets;
311 __u8 le_states[8];
312 __u8 commands[64];
313 __u8 hci_ver;
314 __u16 hci_rev;
315 __u8 lmp_ver;
316 __u16 manufacturer;
317 __u16 lmp_subver;
318 __u16 voice_setting;
319 __u8 num_iac;
320 __u8 stored_max_keys;
321 __u8 stored_num_keys;
322 __u8 io_capability;
323 __s8 inq_tx_power;
324 __u8 err_data_reporting;
325 __u16 page_scan_interval;
326 __u16 page_scan_window;
327 __u8 page_scan_type;
328 __u8 le_adv_channel_map;
329 __u16 le_adv_min_interval;
330 __u16 le_adv_max_interval;
331 __u8 le_scan_type;
332 __u16 le_scan_interval;
333 __u16 le_scan_window;
334 __u16 le_scan_int_suspend;
335 __u16 le_scan_window_suspend;
336 __u16 le_scan_int_discovery;
337 __u16 le_scan_window_discovery;
338 __u16 le_scan_int_adv_monitor;
339 __u16 le_scan_window_adv_monitor;
340 __u16 le_scan_int_connect;
341 __u16 le_scan_window_connect;
342 __u16 le_conn_min_interval;
343 __u16 le_conn_max_interval;
344 __u16 le_conn_latency;
345 __u16 le_supv_timeout;
346 __u16 le_def_tx_len;
347 __u16 le_def_tx_time;
348 __u16 le_max_tx_len;
349 __u16 le_max_tx_time;
350 __u16 le_max_rx_len;
351 __u16 le_max_rx_time;
352 __u8 le_max_key_size;
353 __u8 le_min_key_size;
354 __u16 discov_interleaved_timeout;
355 __u16 conn_info_min_age;
356 __u16 conn_info_max_age;
357 __u16 auth_payload_timeout;
358 __u8 min_enc_key_size;
359 __u8 max_enc_key_size;
360 __u8 pairing_opts;
361 __u8 ssp_debug_mode;
362 __u8 hw_error_code;
363 __u32 clock;
364
365 __u16 devid_source;
366 __u16 devid_vendor;
367 __u16 devid_product;
368 __u16 devid_version;
369
370 __u8 def_page_scan_type;
371 __u16 def_page_scan_int;
372 __u16 def_page_scan_window;
373 __u8 def_inq_scan_type;
374 __u16 def_inq_scan_int;
375 __u16 def_inq_scan_window;
376 __u16 def_br_lsto;
377 __u16 def_page_timeout;
378 __u16 def_multi_adv_rotation_duration;
379 __u16 def_le_autoconnect_timeout;
380
381 __u16 pkt_type;
382 __u16 esco_type;
383 __u16 link_policy;
384 __u16 link_mode;
385
386 __u32 idle_timeout;
387 __u16 sniff_min_interval;
388 __u16 sniff_max_interval;
389
390 __u8 amp_status;
391 __u32 amp_total_bw;
392 __u32 amp_max_bw;
393 __u32 amp_min_latency;
394 __u32 amp_max_pdu;
395 __u8 amp_type;
396 __u16 amp_pal_cap;
397 __u16 amp_assoc_size;
398 __u32 amp_max_flush_to;
399 __u32 amp_be_flush_to;
400
401 struct amp_assoc loc_assoc;
402
403 __u8 flow_ctl_mode;
404
405 unsigned int auto_accept_delay;
406
407 unsigned long quirks;
408
409 atomic_t cmd_cnt;
410 unsigned int acl_cnt;
411 unsigned int sco_cnt;
412 unsigned int le_cnt;
413
414 unsigned int acl_mtu;
415 unsigned int sco_mtu;
416 unsigned int le_mtu;
417 unsigned int acl_pkts;
418 unsigned int sco_pkts;
419 unsigned int le_pkts;
420
421 __u16 block_len;
422 __u16 block_mtu;
423 __u16 num_blocks;
424 __u16 block_cnt;
425
426 unsigned long acl_last_tx;
427 unsigned long sco_last_tx;
428 unsigned long le_last_tx;
429
430 __u8 le_tx_def_phys;
431 __u8 le_rx_def_phys;
432
433 struct workqueue_struct *workqueue;
434 struct workqueue_struct *req_workqueue;
435
436 struct work_struct power_on;
437 struct delayed_work power_off;
438 struct work_struct error_reset;
439
440 __u16 discov_timeout;
441 struct delayed_work discov_off;
442
443 struct delayed_work service_cache;
444
445 struct delayed_work cmd_timer;
446
447 struct work_struct rx_work;
448 struct work_struct cmd_work;
449 struct work_struct tx_work;
450
451 struct work_struct discov_update;
452 struct work_struct bg_scan_update;
453 struct work_struct scan_update;
454 struct work_struct connectable_update;
455 struct work_struct discoverable_update;
456 struct delayed_work le_scan_disable;
457 struct delayed_work le_scan_restart;
458
459 struct sk_buff_head rx_q;
460 struct sk_buff_head raw_q;
461 struct sk_buff_head cmd_q;
462
463 struct sk_buff *sent_cmd;
464
465 struct mutex req_lock;
466 wait_queue_head_t req_wait_q;
467 __u32 req_status;
468 __u32 req_result;
469 struct sk_buff *req_skb;
470
471 void *smp_data;
472 void *smp_bredr_data;
473
474 struct discovery_state discovery;
475
476 int discovery_old_state;
477 bool discovery_paused;
478 int advertising_old_state;
479 bool advertising_paused;
480
481 struct notifier_block suspend_notifier;
482 struct work_struct suspend_prepare;
483 enum suspended_state suspend_state_next;
484 enum suspended_state suspend_state;
485 bool scanning_paused;
486 bool suspended;
487 u8 wake_reason;
488 bdaddr_t wake_addr;
489 u8 wake_addr_type;
490
491 wait_queue_head_t suspend_wait_q;
492 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
493
494 struct hci_conn_hash conn_hash;
495
496 struct list_head mgmt_pending;
497 struct list_head blacklist;
498 struct list_head whitelist;
499 struct list_head uuids;
500 struct list_head link_keys;
501 struct list_head long_term_keys;
502 struct list_head identity_resolving_keys;
503 struct list_head remote_oob_data;
504 struct list_head le_white_list;
505 struct list_head le_resolv_list;
506 struct list_head le_conn_params;
507 struct list_head pend_le_conns;
508 struct list_head pend_le_reports;
509 struct list_head blocked_keys;
510
511 struct hci_dev_stats stat;
512
513 atomic_t promisc;
514
515 const char *hw_info;
516 const char *fw_info;
517 struct dentry *debugfs;
518
519 struct device dev;
520
521 struct rfkill *rfkill;
522
523 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
524
525 __s8 adv_tx_power;
526 __u8 adv_data[HCI_MAX_AD_LENGTH];
527 __u8 adv_data_len;
528 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
529 __u8 scan_rsp_data_len;
530
531 struct list_head adv_instances;
532 unsigned int adv_instance_cnt;
533 __u8 cur_adv_instance;
534 __u16 adv_instance_timeout;
535 struct delayed_work adv_instance_expire;
536
537 struct idr adv_monitors_idr;
538 unsigned int adv_monitors_cnt;
539
540 __u8 irk[16];
541 __u32 rpa_timeout;
542 struct delayed_work rpa_expired;
543 bdaddr_t rpa;
544
545#if IS_ENABLED(CONFIG_BT_LEDS)
546 struct led_trigger *power_led;
547#endif
548
549#if IS_ENABLED(CONFIG_BT_MSFTEXT)
550 __u16 msft_opcode;
551 void *msft_data;
552#endif
553
554 int (*open)(struct hci_dev *hdev);
555 int (*close)(struct hci_dev *hdev);
556 int (*flush)(struct hci_dev *hdev);
557 int (*setup)(struct hci_dev *hdev);
558 int (*shutdown)(struct hci_dev *hdev);
559 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
560 void (*notify)(struct hci_dev *hdev, unsigned int evt);
561 void (*hw_error)(struct hci_dev *hdev, u8 code);
562 int (*post_init)(struct hci_dev *hdev);
563 int (*set_diag)(struct hci_dev *hdev, bool enable);
564 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
565 void (*cmd_timeout)(struct hci_dev *hdev);
566 bool (*prevent_wake)(struct hci_dev *hdev);
567};
568
569#define HCI_PHY_HANDLE(handle) (handle & 0xff)
570
571enum conn_reasons {
572 CONN_REASON_PAIR_DEVICE,
573 CONN_REASON_L2CAP_CHAN,
574 CONN_REASON_SCO_CONNECT,
575};
576
577struct hci_conn {
578 struct list_head list;
579
580 atomic_t refcnt;
581
582 bdaddr_t dst;
583 __u8 dst_type;
584 bdaddr_t src;
585 __u8 src_type;
586 bdaddr_t init_addr;
587 __u8 init_addr_type;
588 bdaddr_t resp_addr;
589 __u8 resp_addr_type;
590 __u16 handle;
591 __u16 state;
592 __u8 mode;
593 __u8 type;
594 __u8 role;
595 bool out;
596 __u8 attempt;
597 __u8 dev_class[3];
598 __u8 features[HCI_MAX_PAGES][8];
599 __u16 pkt_type;
600 __u16 link_policy;
601 __u8 key_type;
602 __u8 auth_type;
603 __u8 sec_level;
604 __u8 pending_sec_level;
605 __u8 pin_length;
606 __u8 enc_key_size;
607 __u8 io_capability;
608 __u32 passkey_notify;
609 __u8 passkey_entered;
610 __u16 disc_timeout;
611 __u16 conn_timeout;
612 __u16 setting;
613 __u16 auth_payload_timeout;
614 __u16 le_conn_min_interval;
615 __u16 le_conn_max_interval;
616 __u16 le_conn_interval;
617 __u16 le_conn_latency;
618 __u16 le_supv_timeout;
619 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
620 __u8 le_adv_data_len;
621 __u8 le_tx_phy;
622 __u8 le_rx_phy;
623 __s8 rssi;
624 __s8 tx_power;
625 __s8 max_tx_power;
626 unsigned long flags;
627
628 enum conn_reasons conn_reason;
629
630 __u32 clock;
631 __u16 clock_accuracy;
632
633 unsigned long conn_info_timestamp;
634
635 __u8 remote_cap;
636 __u8 remote_auth;
637 __u8 remote_id;
638
639 unsigned int sent;
640
641 struct sk_buff_head data_q;
642 struct list_head chan_list;
643
644 struct delayed_work disc_work;
645 struct delayed_work auto_accept_work;
646 struct delayed_work idle_work;
647 struct delayed_work le_conn_timeout;
648 struct work_struct le_scan_cleanup;
649
650 struct device dev;
651 struct dentry *debugfs;
652
653 struct hci_dev *hdev;
654 void *l2cap_data;
655 void *sco_data;
656 struct amp_mgr *amp_mgr;
657
658 struct hci_conn *link;
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);
663};
664
665struct hci_chan {
666 struct list_head list;
667 __u16 handle;
668 struct hci_conn *conn;
669 struct sk_buff_head data_q;
670 unsigned int sent;
671 __u8 state;
672};
673
674struct hci_conn_params {
675 struct list_head list;
676 struct list_head action;
677
678 bdaddr_t addr;
679 u8 addr_type;
680
681 u16 conn_min_interval;
682 u16 conn_max_interval;
683 u16 conn_latency;
684 u16 supervision_timeout;
685
686 enum {
687 HCI_AUTO_CONN_DISABLED,
688 HCI_AUTO_CONN_REPORT,
689 HCI_AUTO_CONN_DIRECT,
690 HCI_AUTO_CONN_ALWAYS,
691 HCI_AUTO_CONN_LINK_LOSS,
692 HCI_AUTO_CONN_EXPLICIT,
693 } auto_connect;
694
695 struct hci_conn *conn;
696 bool explicit_connect;
697 u32 current_flags;
698};
699
700extern struct list_head hci_dev_list;
701extern struct list_head hci_cb_list;
702extern rwlock_t hci_dev_list_lock;
703extern struct mutex hci_cb_list_lock;
704
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); \
717 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
718 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
719 } while (0)
720
721
722int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
723int l2cap_disconn_ind(struct hci_conn *hcon);
724void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
725
726#if IS_ENABLED(CONFIG_BT_BREDR)
727int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
728void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
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
740
741
742#define INQUIRY_CACHE_AGE_MAX (HZ*30)
743#define INQUIRY_ENTRY_AGE_MAX (HZ*60)
744
745static inline void discovery_init(struct hci_dev *hdev)
746{
747 hdev->discovery.state = DISCOVERY_STOPPED;
748 INIT_LIST_HEAD(&hdev->discovery.all);
749 INIT_LIST_HEAD(&hdev->discovery.unknown);
750 INIT_LIST_HEAD(&hdev->discovery.resolve);
751 hdev->discovery.report_invalid_rssi = true;
752 hdev->discovery.rssi = HCI_RSSI_INVALID;
753}
754
755static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
756{
757 hdev->discovery.result_filtering = false;
758 hdev->discovery.report_invalid_rssi = true;
759 hdev->discovery.rssi = HCI_RSSI_INVALID;
760 hdev->discovery.uuid_count = 0;
761 kfree(hdev->discovery.uuids);
762 hdev->discovery.uuids = NULL;
763 hdev->discovery.scan_start = 0;
764 hdev->discovery.scan_duration = 0;
765}
766
767bool hci_discovery_active(struct hci_dev *hdev);
768
769void hci_discovery_set_state(struct hci_dev *hdev, int state);
770
771static inline int inquiry_cache_empty(struct hci_dev *hdev)
772{
773 return list_empty(&hdev->discovery.all);
774}
775
776static inline long inquiry_cache_age(struct hci_dev *hdev)
777{
778 struct discovery_state *c = &hdev->discovery;
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
787struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
788 bdaddr_t *bdaddr);
789struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
790 bdaddr_t *bdaddr);
791struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
792 bdaddr_t *bdaddr,
793 int state);
794void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
795 struct inquiry_entry *ie);
796u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
797 bool name_known);
798void hci_inquiry_cache_flush(struct hci_dev *hdev);
799
800
801enum {
802 HCI_CONN_AUTH_PEND,
803 HCI_CONN_REAUTH_PEND,
804 HCI_CONN_ENCRYPT_PEND,
805 HCI_CONN_RSWITCH_PEND,
806 HCI_CONN_MODE_CHANGE_PEND,
807 HCI_CONN_SCO_SETUP_PEND,
808 HCI_CONN_MGMT_CONNECTED,
809 HCI_CONN_SSP_ENABLED,
810 HCI_CONN_SC_ENABLED,
811 HCI_CONN_AES_CCM,
812 HCI_CONN_POWER_SAVE,
813 HCI_CONN_FLUSH_KEY,
814 HCI_CONN_ENCRYPT,
815 HCI_CONN_AUTH,
816 HCI_CONN_SECURE,
817 HCI_CONN_FIPS,
818 HCI_CONN_STK_ENCRYPT,
819 HCI_CONN_AUTH_INITIATOR,
820 HCI_CONN_DROP,
821 HCI_CONN_PARAM_REMOVAL_PEND,
822 HCI_CONN_NEW_LINK_KEY,
823 HCI_CONN_SCANNING,
824 HCI_CONN_AUTH_FAILURE,
825};
826
827static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
828{
829 struct hci_dev *hdev = conn->hdev;
830 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
831 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
832}
833
834static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
835{
836 struct hci_dev *hdev = conn->hdev;
837 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
838 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
839}
840
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;
844 list_add_rcu(&c->list, &h->list);
845 switch (c->type) {
846 case ACL_LINK:
847 h->acl_num++;
848 break;
849 case AMP_LINK:
850 h->amp_num++;
851 break;
852 case LE_LINK:
853 h->le_num++;
854 if (c->role == HCI_ROLE_SLAVE)
855 h->le_num_slave++;
856 break;
857 case SCO_LINK:
858 case ESCO_LINK:
859 h->sco_num++;
860 break;
861 }
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;
867
868 list_del_rcu(&c->list);
869 synchronize_rcu();
870
871 switch (c->type) {
872 case ACL_LINK:
873 h->acl_num--;
874 break;
875 case AMP_LINK:
876 h->amp_num--;
877 break;
878 case LE_LINK:
879 h->le_num--;
880 if (c->role == HCI_ROLE_SLAVE)
881 h->le_num_slave--;
882 break;
883 case SCO_LINK:
884 case ESCO_LINK:
885 h->sco_num--;
886 break;
887 }
888}
889
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;
896 case AMP_LINK:
897 return h->amp_num;
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
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
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
935static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
936 __u16 handle)
937{
938 struct hci_conn_hash *h = &hdev->conn_hash;
939 struct hci_conn *c;
940
941 rcu_read_lock();
942
943 list_for_each_entry_rcu(c, &h->list, list) {
944 if (c->handle == handle) {
945 rcu_read_unlock();
946 return c;
947 }
948 }
949 rcu_read_unlock();
950
951 return NULL;
952}
953
954static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
955 __u8 type, bdaddr_t *ba)
956{
957 struct hci_conn_hash *h = &hdev->conn_hash;
958 struct hci_conn *c;
959
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();
965 return c;
966 }
967 }
968
969 rcu_read_unlock();
970
971 return NULL;
972}
973
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
998static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
999 __u8 type, __u16 state)
1000{
1001 struct hci_conn_hash *h = &hdev->conn_hash;
1002 struct hci_conn *c;
1003
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();
1009 return c;
1010 }
1011 }
1012
1013 rcu_read_unlock();
1014
1015 return NULL;
1016}
1017
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
1038int hci_disconnect(struct hci_conn *conn, __u8 reason);
1039bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1040void hci_sco_setup(struct hci_conn *conn, __u8 status);
1041
1042struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1043 u8 role);
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);
1047
1048struct hci_chan *hci_chan_create(struct hci_conn *conn);
1049void hci_chan_del(struct hci_chan *chan);
1050void hci_chan_list_flush(struct hci_conn *conn);
1051struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1052
1053struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1054 u8 dst_type, u8 sec_level,
1055 u16 conn_timeout,
1056 enum conn_reasons conn_reason);
1057struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1058 u8 dst_type, u8 sec_level, u16 conn_timeout,
1059 u8 role, bdaddr_t *direct_rpa);
1060struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1061 u8 sec_level, u8 auth_type,
1062 enum conn_reasons conn_reason);
1063struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1064 __u16 setting);
1065int hci_conn_check_link_mode(struct hci_conn *conn);
1066int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1067int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1068 bool initiator);
1069int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1070
1071void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1072
1073void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1097{
1098 get_device(&conn->dev);
1099 return conn;
1100}
1101
1102static inline void hci_conn_put(struct hci_conn *conn)
1103{
1104 put_device(&conn->dev);
1105}
1106
1107static inline void hci_conn_hold(struct hci_conn *conn)
1108{
1109 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1110
1111 atomic_inc(&conn->refcnt);
1112 cancel_delayed_work(&conn->disc_work);
1113}
1114
1115static inline void hci_conn_drop(struct hci_conn *conn)
1116{
1117 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1118
1119 if (atomic_dec_and_test(&conn->refcnt)) {
1120 unsigned long timeo;
1121
1122 switch (conn->type) {
1123 case ACL_LINK:
1124 case LE_LINK:
1125 cancel_delayed_work(&conn->idle_work);
1126 if (conn->state == BT_CONNECTED) {
1127 timeo = conn->disc_timeout;
1128 if (!conn->out)
1129 timeo *= 2;
1130 } else {
1131 timeo = 0;
1132 }
1133 break;
1134
1135 case AMP_LINK:
1136 timeo = conn->disc_timeout;
1137 break;
1138
1139 default:
1140 timeo = 0;
1141 break;
1142 }
1143
1144 cancel_delayed_work(&conn->disc_work);
1145 queue_delayed_work(conn->hdev->workqueue,
1146 &conn->disc_work, timeo);
1147 }
1148}
1149
1150
1151static inline void hci_dev_put(struct hci_dev *d)
1152{
1153 BT_DBG("%s orig refcnt %d", d->name,
1154 kref_read(&d->dev.kobj.kref));
1155
1156 put_device(&d->dev);
1157}
1158
1159static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1160{
1161 BT_DBG("%s orig refcnt %d", d->name,
1162 kref_read(&d->dev.kobj.kref));
1163
1164 get_device(&d->dev);
1165 return d;
1166}
1167
1168#define hci_dev_lock(d) mutex_lock(&d->lock)
1169#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1170
1171#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1172#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1173
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
1184struct hci_dev *hci_dev_get(int index);
1185struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1186
1187struct hci_dev *hci_alloc_dev(void);
1188void hci_free_dev(struct hci_dev *hdev);
1189int hci_register_dev(struct hci_dev *hdev);
1190void hci_unregister_dev(struct hci_dev *hdev);
1191int hci_suspend_dev(struct hci_dev *hdev);
1192int hci_resume_dev(struct hci_dev *hdev);
1193int hci_reset_dev(struct hci_dev *hdev);
1194int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1195int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
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, ...);
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
1206int hci_dev_open(__u16 dev);
1207int hci_dev_close(__u16 dev);
1208int hci_dev_do_close(struct hci_dev *hdev);
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);
1216int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1217int hci_inquiry(void __user *arg);
1218
1219struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1220 bdaddr_t *bdaddr, u8 type);
1221struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1222 struct list_head *list, bdaddr_t *bdaddr,
1223 u8 type);
1224struct bdaddr_list_with_flags *
1225hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1226 u8 type);
1227int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1228int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
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);
1232int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1233int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1234 u8 type);
1235int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1236 u8 type);
1237void hci_bdaddr_list_clear(struct list_head *list);
1238
1239struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1240 bdaddr_t *addr, u8 addr_type);
1241struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1242 bdaddr_t *addr, u8 addr_type);
1243void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1244void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1245
1246struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1247 bdaddr_t *addr,
1248 u8 addr_type);
1249
1250void hci_uuids_clear(struct hci_dev *hdev);
1251
1252void hci_link_keys_clear(struct hci_dev *hdev);
1253struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1254struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1255 bdaddr_t *bdaddr, u8 *val, u8 type,
1256 u8 pin_len, bool *persistent);
1257struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1258 u8 addr_type, u8 type, u8 authenticated,
1259 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1260struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1261 u8 addr_type, u8 role);
1262int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1263void hci_smp_ltks_clear(struct hci_dev *hdev);
1264int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1265
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);
1269struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1270 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1271void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1272bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1273void hci_blocked_keys_clear(struct hci_dev *hdev);
1274void hci_smp_irks_clear(struct hci_dev *hdev);
1275
1276bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1277
1278void hci_remote_oob_data_clear(struct hci_dev *hdev);
1279struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1280 bdaddr_t *bdaddr, u8 bdaddr_type);
1281int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1282 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1283 u8 *hash256, u8 *rand256);
1284int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1285 u8 bdaddr_type);
1286
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);
1295void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1296
1297void hci_adv_monitors_clear(struct hci_dev *hdev);
1298void hci_free_adv_monitor(struct adv_monitor *monitor);
1299int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1300int hci_remove_adv_monitor(struct hci_dev *hdev, u16 handle);
1301bool hci_is_adv_monitoring(struct hci_dev *hdev);
1302
1303void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1304
1305void hci_init_sysfs(struct hci_dev *hdev);
1306void hci_conn_init_sysfs(struct hci_conn *conn);
1307void hci_conn_add_sysfs(struct hci_conn *conn);
1308void hci_conn_del_sysfs(struct hci_conn *conn);
1309
1310#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1311
1312
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)
1331#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
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)
1336
1337
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)
1342#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1343#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1344
1345
1346#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1347#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
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))
1350
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))
1355
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
1365
1366#define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1367
1368
1369#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1370 ((dev)->commands[37] & 0x40))
1371
1372#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1373
1374
1375#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1376
1377
1378#define HCI_PROTO_DEFER 0x01
1379
1380static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1381 __u8 type, __u8 *flags)
1382{
1383 switch (type) {
1384 case ACL_LINK:
1385 return l2cap_connect_ind(hdev, bdaddr);
1386
1387 case SCO_LINK:
1388 case ESCO_LINK:
1389 return sco_connect_ind(hdev, bdaddr, flags);
1390
1391 default:
1392 BT_ERR("unknown link type %d", type);
1393 return -EINVAL;
1394 }
1395}
1396
1397static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1398{
1399 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1400 return HCI_ERROR_REMOTE_USER_TERM;
1401
1402 return l2cap_disconn_ind(conn);
1403}
1404
1405
1406struct hci_cb {
1407 struct list_head list;
1408
1409 char *name;
1410
1411 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1412 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1413 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1414 __u8 encrypt);
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
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
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
1449static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1450{
1451 struct hci_cb *cb;
1452 __u8 encrypt;
1453
1454 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1455 return;
1456
1457 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1458
1459 mutex_lock(&hci_cb_list_lock);
1460 list_for_each_entry(cb, &hci_cb_list, list) {
1461 if (cb->security_cfm)
1462 cb->security_cfm(conn, status, encrypt);
1463 }
1464 mutex_unlock(&hci_cb_list_lock);
1465
1466 if (conn->security_cfm_cb)
1467 conn->security_cfm_cb(conn, status);
1468}
1469
1470static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1471{
1472 struct hci_cb *cb;
1473 __u8 encrypt;
1474
1475 if (conn->state == BT_CONFIG) {
1476 if (!status)
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;
1490
1491 if (!status) {
1492 if (conn->sec_level == BT_SECURITY_SDP)
1493 conn->sec_level = BT_SECURITY_LOW;
1494
1495 if (conn->pending_sec_level > conn->sec_level)
1496 conn->sec_level = conn->pending_sec_level;
1497 }
1498
1499 mutex_lock(&hci_cb_list_lock);
1500 list_for_each_entry(cb, &hci_cb_list, list) {
1501 if (cb->security_cfm)
1502 cb->security_cfm(conn, status, encrypt);
1503 }
1504 mutex_unlock(&hci_cb_list_lock);
1505
1506 if (conn->security_cfm_cb)
1507 conn->security_cfm_cb(conn, status);
1508}
1509
1510static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1511{
1512 struct hci_cb *cb;
1513
1514 mutex_lock(&hci_cb_list_lock);
1515 list_for_each_entry(cb, &hci_cb_list, list) {
1516 if (cb->key_change_cfm)
1517 cb->key_change_cfm(conn, status);
1518 }
1519 mutex_unlock(&hci_cb_list_lock);
1520}
1521
1522static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1523 __u8 role)
1524{
1525 struct hci_cb *cb;
1526
1527 mutex_lock(&hci_cb_list_lock);
1528 list_for_each_entry(cb, &hci_cb_list, list) {
1529 if (cb->role_switch_cfm)
1530 cb->role_switch_cfm(conn, status, role);
1531 }
1532 mutex_unlock(&hci_cb_list_lock);
1533}
1534
1535static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1536 size_t *data_len)
1537{
1538 size_t parsed = 0;
1539
1540 if (eir_len < 2)
1541 return NULL;
1542
1543 while (parsed < eir_len - 1) {
1544 u8 field_len = eir[0];
1545
1546 if (field_len == 0)
1547 break;
1548
1549 parsed += field_len + 1;
1550
1551 if (parsed > eir_len)
1552 break;
1553
1554 if (eir[1] != type) {
1555 eir += field_len + 1;
1556 continue;
1557 }
1558
1559
1560 if (field_len == 1)
1561 return NULL;
1562
1563 if (data_len)
1564 *data_len = field_len - 1;
1565
1566 return &eir[2];
1567 }
1568
1569 return NULL;
1570}
1571
1572static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1573{
1574 if (addr_type != ADDR_LE_DEV_RANDOM)
1575 return false;
1576
1577 if ((bdaddr->b[5] & 0xc0) == 0x40)
1578 return true;
1579
1580 return false;
1581}
1582
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
1589 if ((addr->b[5] & 0xc0) == 0xc0)
1590 return true;
1591
1592 return false;
1593}
1594
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
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
1618 max_latency = (to_multiplier * 4 / max) - 1;
1619 if (latency > 499 || latency > max_latency)
1620 return -EINVAL;
1621
1622 return 0;
1623}
1624
1625int hci_register_cb(struct hci_cb *hcb);
1626int hci_unregister_cb(struct hci_cb *hcb);
1627
1628struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1629 const void *param, u32 timeout);
1630struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1631 const void *param, u8 event, u32 timeout);
1632int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1633 const void *param);
1634
1635int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1636 const void *param);
1637void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1638void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1639
1640void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1641
1642struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1643 const void *param, u32 timeout);
1644
1645u32 hci_conn_get_phy(struct hci_conn *conn);
1646
1647
1648void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1649void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1650 int flag, struct sock *skip_sk);
1651void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
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);
1655
1656void hci_sock_dev_event(struct hci_dev *hdev, int event);
1657
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)
1662#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1663
1664struct hci_mgmt_handler {
1665 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1666 u16 data_len);
1667 size_t data_len;
1668 unsigned long flags;
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;
1676 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1677};
1678
1679int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1680void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1681
1682
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))
1689
1690
1691
1692
1693#define DISCOV_LE_SCAN_WIN 0x12
1694#define DISCOV_LE_SCAN_INT 0x12
1695#define DISCOV_LE_TIMEOUT 10240
1696#define DISCOV_INTERLEAVED_TIMEOUT 5120
1697#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1698#define DISCOV_BREDR_INQUIRY_LEN 0x08
1699#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200)
1700#define DISCOV_LE_FAST_ADV_INT_MIN 100
1701#define DISCOV_LE_FAST_ADV_INT_MAX 150
1702
1703void mgmt_fill_version_info(void *ver);
1704int mgmt_new_settings(struct hci_dev *hdev);
1705void mgmt_index_added(struct hci_dev *hdev);
1706void mgmt_index_removed(struct hci_dev *hdev);
1707void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1708void mgmt_power_on(struct hci_dev *hdev, int err);
1709void __mgmt_power_off(struct hci_dev *hdev);
1710void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1711 bool persistent);
1712void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1713 u32 flags, u8 *name, u8 name_len);
1714void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1715 u8 link_type, u8 addr_type, u8 reason,
1716 bool mgmt_connected);
1717void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1718 u8 link_type, u8 addr_type, u8 status);
1719void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1720 u8 addr_type, u8 status);
1721void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1722void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1723 u8 status);
1724void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1725 u8 status);
1726int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1727 u8 link_type, u8 addr_type, u32 value,
1728 u8 confirm_hint);
1729int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1730 u8 link_type, u8 addr_type, u8 status);
1731int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1732 u8 link_type, u8 addr_type, u8 status);
1733int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1734 u8 link_type, u8 addr_type);
1735int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1736 u8 link_type, u8 addr_type, u8 status);
1737int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1738 u8 link_type, u8 addr_type, u8 status);
1739int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1740 u8 link_type, u8 addr_type, u32 passkey,
1741 u8 entered);
1742void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1743void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1744void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1745void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1746 u8 status);
1747void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1748void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1749void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1750void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1751 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1752 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
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);
1755void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
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);
1759bool mgmt_powering_down(struct hci_dev *hdev);
1760void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1761void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1762void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1763 bool persistent);
1764void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1765 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1766 u16 max_interval, u16 latency, u16 timeout);
1767void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1768bool mgmt_get_connectable(struct hci_dev *hdev);
1769void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1770void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
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);
1776int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1777
1778u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1779 u16 to_multiplier);
1780void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1781 __u8 ltk[16], __u8 key_size);
1782
1783void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1784 u8 *bdaddr_type);
1785
1786#define SCO_AIRMODE_MASK 0x0003
1787#define SCO_AIRMODE_CVSD 0x0000
1788#define SCO_AIRMODE_TRANSP 0x0003
1789
1790#endif
1791
