1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023-2024 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 #ifndef __HCI_CORE_H
27 #define __HCI_CORE_H
28
29 #include <linux/idr.h>
30 #include <linux/leds.h>
31 #include <linux/rculist.h>
32
33 #include <net/bluetooth/hci.h>
34 #include <net/bluetooth/hci_sync.h>
35 #include <net/bluetooth/hci_sock.h>
36 #include <net/bluetooth/coredump.h>
37
38 /* HCI priority */
39 #define HCI_PRIO_MAX 7
40
41 /* HCI maximum id value */
42 #define HCI_MAX_ID 10000
43
44 /* HCI Core structures */
45 struct inquiry_data {
46 bdaddr_t bdaddr;
47 __u8 pscan_rep_mode;
48 __u8 pscan_period_mode;
49 __u8 pscan_mode;
50 __u8 dev_class[3];
51 __le16 clock_offset;
52 __s8 rssi;
53 __u8 ssp_mode;
54 };
55
56 struct inquiry_entry {
57 struct list_head all; /* inq_cache.all */
58 struct list_head list; /* unknown or resolve */
59 enum {
60 NAME_NOT_KNOWN,
61 NAME_NEEDED,
62 NAME_PENDING,
63 NAME_KNOWN,
64 } name_state;
65 __u32 timestamp;
66 struct inquiry_data data;
67 };
68
69 struct discovery_state {
70 int type;
71 enum {
72 DISCOVERY_STOPPED,
73 DISCOVERY_STARTING,
74 DISCOVERY_FINDING,
75 DISCOVERY_RESOLVING,
76 DISCOVERY_STOPPING,
77 } state;
78 struct list_head all; /* All devices found during inquiry */
79 struct list_head unknown; /* Name state not known */
80 struct list_head resolve; /* Name needs to be resolved */
81 __u32 timestamp;
82 bdaddr_t last_adv_addr;
83 u8 last_adv_addr_type;
84 s8 last_adv_rssi;
85 u32 last_adv_flags;
86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH];
87 u8 last_adv_data_len;
88 bool report_invalid_rssi;
89 bool result_filtering;
90 bool limited;
91 s8 rssi;
92 u16 uuid_count;
93 u8 (*uuids)[16];
94 unsigned long name_resolve_timeout;
95 };
96
97 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98
99 enum suspend_tasks {
100 SUSPEND_PAUSE_DISCOVERY,
101 SUSPEND_UNPAUSE_DISCOVERY,
102
103 SUSPEND_PAUSE_ADVERTISING,
104 SUSPEND_UNPAUSE_ADVERTISING,
105
106 SUSPEND_SCAN_DISABLE,
107 SUSPEND_SCAN_ENABLE,
108 SUSPEND_DISCONNECTING,
109
110 SUSPEND_POWERING_DOWN,
111
112 SUSPEND_PREPARE_NOTIFIER,
113
114 SUSPEND_SET_ADV_FILTER,
115 __SUSPEND_NUM_TASKS
116 };
117
118 enum suspended_state {
119 BT_RUNNING = 0,
120 BT_SUSPEND_DISCONNECT,
121 BT_SUSPEND_CONFIGURE_WAKE,
122 };
123
124 struct hci_conn_hash {
125 struct list_head list;
126 unsigned int acl_num;
127 unsigned int sco_num;
128 unsigned int iso_num;
129 unsigned int le_num;
130 unsigned int le_num_peripheral;
131 };
132
133 struct bdaddr_list {
134 struct list_head list;
135 bdaddr_t bdaddr;
136 u8 bdaddr_type;
137 };
138
139 struct codec_list {
140 struct list_head list;
141 u8 id;
142 __u16 cid;
143 __u16 vid;
144 u8 transport;
145 u8 num_caps;
146 u32 len;
147 struct hci_codec_caps caps[];
148 };
149
150 struct bdaddr_list_with_irk {
151 struct list_head list;
152 bdaddr_t bdaddr;
153 u8 bdaddr_type;
154 u8 peer_irk[16];
155 u8 local_irk[16];
156 };
157
158 /* Bitmask of connection flags */
159 enum hci_conn_flags {
160 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
161 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
162 };
163 typedef u8 hci_conn_flags_t;
164
165 struct bdaddr_list_with_flags {
166 struct list_head list;
167 bdaddr_t bdaddr;
168 u8 bdaddr_type;
169 hci_conn_flags_t flags;
170 };
171
172 struct bt_uuid {
173 struct list_head list;
174 u8 uuid[16];
175 u8 size;
176 u8 svc_hint;
177 };
178
179 struct blocked_key {
180 struct list_head list;
181 struct rcu_head rcu;
182 u8 type;
183 u8 val[16];
184 };
185
186 struct smp_csrk {
187 bdaddr_t bdaddr;
188 u8 bdaddr_type;
189 u8 type;
190 u8 val[16];
191 };
192
193 struct smp_ltk {
194 struct list_head list;
195 struct rcu_head rcu;
196 bdaddr_t bdaddr;
197 u8 bdaddr_type;
198 u8 authenticated;
199 u8 type;
200 u8 enc_size;
201 __le16 ediv;
202 __le64 rand;
203 u8 val[16];
204 };
205
206 struct smp_irk {
207 struct list_head list;
208 struct rcu_head rcu;
209 bdaddr_t rpa;
210 bdaddr_t bdaddr;
211 u8 addr_type;
212 u8 val[16];
213 };
214
215 struct link_key {
216 struct list_head list;
217 struct rcu_head rcu;
218 bdaddr_t bdaddr;
219 u8 type;
220 u8 val[HCI_LINK_KEY_SIZE];
221 u8 pin_len;
222 };
223
224 struct oob_data {
225 struct list_head list;
226 bdaddr_t bdaddr;
227 u8 bdaddr_type;
228 u8 present;
229 u8 hash192[16];
230 u8 rand192[16];
231 u8 hash256[16];
232 u8 rand256[16];
233 };
234
235 struct adv_info {
236 struct list_head list;
237 bool enabled;
238 bool pending;
239 bool periodic;
240 __u8 mesh;
241 __u8 instance;
242 __u8 handle;
243 __u32 flags;
244 __u16 timeout;
245 __u16 remaining_time;
246 __u16 duration;
247 __u16 adv_data_len;
248 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
249 bool adv_data_changed;
250 __u16 scan_rsp_len;
251 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
252 bool scan_rsp_changed;
253 __u16 per_adv_data_len;
254 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
255 __s8 tx_power;
256 __u32 min_interval;
257 __u32 max_interval;
258 bdaddr_t random_addr;
259 bool rpa_expired;
260 struct delayed_work rpa_expired_cb;
261 };
262
263 #define HCI_MAX_ADV_INSTANCES 5
264 #define HCI_DEFAULT_ADV_DURATION 2
265
266 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
267
268 #define DATA_CMP(_d1, _l1, _d2, _l2) \
269 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
270
271 #define ADV_DATA_CMP(_adv, _data, _len) \
272 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
273
274 #define SCAN_RSP_CMP(_adv, _data, _len) \
275 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
276
277 struct monitored_device {
278 struct list_head list;
279
280 bdaddr_t bdaddr;
281 __u8 addr_type;
282 __u16 handle;
283 bool notified;
284 };
285
286 struct adv_pattern {
287 struct list_head list;
288 __u8 ad_type;
289 __u8 offset;
290 __u8 length;
291 __u8 value[HCI_MAX_EXT_AD_LENGTH];
292 };
293
294 struct adv_rssi_thresholds {
295 __s8 low_threshold;
296 __s8 high_threshold;
297 __u16 low_threshold_timeout;
298 __u16 high_threshold_timeout;
299 __u8 sampling_period;
300 };
301
302 struct adv_monitor {
303 struct list_head patterns;
304 struct adv_rssi_thresholds rssi;
305 __u16 handle;
306
307 enum {
308 ADV_MONITOR_STATE_NOT_REGISTERED,
309 ADV_MONITOR_STATE_REGISTERED,
310 ADV_MONITOR_STATE_OFFLOADED
311 } state;
312 };
313
314 #define HCI_MIN_ADV_MONITOR_HANDLE 1
315 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
316 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
317 #define HCI_ADV_MONITOR_EXT_NONE 1
318 #define HCI_ADV_MONITOR_EXT_MSFT 2
319
320 #define HCI_MAX_SHORT_NAME_LENGTH 10
321
322 #define HCI_CONN_HANDLE_MAX 0x0eff
323 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
324
325 /* Min encryption key size to match with SMP */
326 #define HCI_MIN_ENC_KEY_SIZE 7
327
328 /* Default LE RPA expiry time, 15 minutes */
329 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
330
331 /* Default min/max age of connection information (1s/3s) */
332 #define DEFAULT_CONN_INFO_MIN_AGE 1000
333 #define DEFAULT_CONN_INFO_MAX_AGE 3000
334 /* Default authenticated payload timeout 30s */
335 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
336
337 #define HCI_MAX_PAGES 3
338
339 struct hci_dev {
340 struct list_head list;
341 struct mutex lock;
342
343 struct ida unset_handle_ida;
344
345 const char *name;
346 unsigned long flags;
347 __u16 id;
348 __u8 bus;
349 bdaddr_t bdaddr;
350 bdaddr_t setup_addr;
351 bdaddr_t public_addr;
352 bdaddr_t random_addr;
353 bdaddr_t static_addr;
354 __u8 adv_addr_type;
355 __u8 dev_name[HCI_MAX_NAME_LENGTH];
356 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
357 __u8 eir[HCI_MAX_EIR_LENGTH];
358 __u16 appearance;
359 __u8 dev_class[3];
360 __u8 major_class;
361 __u8 minor_class;
362 __u8 max_page;
363 __u8 features[HCI_MAX_PAGES][8];
364 __u8 le_features[8];
365 __u8 le_accept_list_size;
366 __u8 le_resolv_list_size;
367 __u8 le_num_of_adv_sets;
368 __u8 le_states[8];
369 __u8 mesh_ad_types[16];
370 __u8 mesh_send_ref;
371 __u8 commands[64];
372 __u8 hci_ver;
373 __u16 hci_rev;
374 __u8 lmp_ver;
375 __u16 manufacturer;
376 __u16 lmp_subver;
377 __u16 voice_setting;
378 __u8 num_iac;
379 __u16 stored_max_keys;
380 __u16 stored_num_keys;
381 __u8 io_capability;
382 __s8 inq_tx_power;
383 __u8 err_data_reporting;
384 __u16 page_scan_interval;
385 __u16 page_scan_window;
386 __u8 page_scan_type;
387 __u8 le_adv_channel_map;
388 __u16 le_adv_min_interval;
389 __u16 le_adv_max_interval;
390 __u8 le_scan_type;
391 __u16 le_scan_interval;
392 __u16 le_scan_window;
393 __u16 le_scan_int_suspend;
394 __u16 le_scan_window_suspend;
395 __u16 le_scan_int_discovery;
396 __u16 le_scan_window_discovery;
397 __u16 le_scan_int_adv_monitor;
398 __u16 le_scan_window_adv_monitor;
399 __u16 le_scan_int_connect;
400 __u16 le_scan_window_connect;
401 __u16 le_conn_min_interval;
402 __u16 le_conn_max_interval;
403 __u16 le_conn_latency;
404 __u16 le_supv_timeout;
405 __u16 le_def_tx_len;
406 __u16 le_def_tx_time;
407 __u16 le_max_tx_len;
408 __u16 le_max_tx_time;
409 __u16 le_max_rx_len;
410 __u16 le_max_rx_time;
411 __u8 le_max_key_size;
412 __u8 le_min_key_size;
413 __u16 discov_interleaved_timeout;
414 __u16 conn_info_min_age;
415 __u16 conn_info_max_age;
416 __u16 auth_payload_timeout;
417 __u8 min_enc_key_size;
418 __u8 max_enc_key_size;
419 __u8 pairing_opts;
420 __u8 ssp_debug_mode;
421 __u8 hw_error_code;
422 __u32 clock;
423 __u16 advmon_allowlist_duration;
424 __u16 advmon_no_filter_duration;
425 __u8 enable_advmon_interleave_scan;
426
427 __u16 devid_source;
428 __u16 devid_vendor;
429 __u16 devid_product;
430 __u16 devid_version;
431
432 __u8 def_page_scan_type;
433 __u16 def_page_scan_int;
434 __u16 def_page_scan_window;
435 __u8 def_inq_scan_type;
436 __u16 def_inq_scan_int;
437 __u16 def_inq_scan_window;
438 __u16 def_br_lsto;
439 __u16 def_page_timeout;
440 __u16 def_multi_adv_rotation_duration;
441 __u16 def_le_autoconnect_timeout;
442 __s8 min_le_tx_power;
443 __s8 max_le_tx_power;
444
445 __u16 pkt_type;
446 __u16 esco_type;
447 __u16 link_policy;
448 __u16 link_mode;
449
450 __u32 idle_timeout;
451 __u16 sniff_min_interval;
452 __u16 sniff_max_interval;
453
454 unsigned int auto_accept_delay;
455
456 unsigned long quirks;
457
458 atomic_t cmd_cnt;
459 unsigned int acl_cnt;
460 unsigned int sco_cnt;
461 unsigned int le_cnt;
462 unsigned int iso_cnt;
463
464 unsigned int acl_mtu;
465 unsigned int sco_mtu;
466 unsigned int le_mtu;
467 unsigned int iso_mtu;
468 unsigned int acl_pkts;
469 unsigned int sco_pkts;
470 unsigned int le_pkts;
471 unsigned int iso_pkts;
472
473 unsigned long acl_last_tx;
474 unsigned long le_last_tx;
475
476 __u8 le_tx_def_phys;
477 __u8 le_rx_def_phys;
478
479 struct workqueue_struct *workqueue;
480 struct workqueue_struct *req_workqueue;
481
482 struct work_struct power_on;
483 struct delayed_work power_off;
484 struct work_struct error_reset;
485 struct work_struct cmd_sync_work;
486 struct list_head cmd_sync_work_list;
487 struct mutex cmd_sync_work_lock;
488 struct mutex unregister_lock;
489 struct work_struct cmd_sync_cancel_work;
490 struct work_struct reenable_adv_work;
491
492 __u16 discov_timeout;
493 struct delayed_work discov_off;
494
495 struct delayed_work service_cache;
496
497 struct delayed_work cmd_timer;
498 struct delayed_work ncmd_timer;
499
500 struct work_struct rx_work;
501 struct work_struct cmd_work;
502 struct work_struct tx_work;
503
504 struct delayed_work le_scan_disable;
505
506 struct sk_buff_head rx_q;
507 struct sk_buff_head raw_q;
508 struct sk_buff_head cmd_q;
509
510 struct sk_buff *sent_cmd;
511 struct sk_buff *recv_event;
512
513 struct mutex req_lock;
514 wait_queue_head_t req_wait_q;
515 __u32 req_status;
516 __u32 req_result;
517 struct sk_buff *req_skb;
518 struct sk_buff *req_rsp;
519
520 void *smp_data;
521 void *smp_bredr_data;
522
523 struct discovery_state discovery;
524
525 bool discovery_paused;
526 int advertising_old_state;
527 bool advertising_paused;
528
529 struct notifier_block suspend_notifier;
530 enum suspended_state suspend_state_next;
531 enum suspended_state suspend_state;
532 bool scanning_paused;
533 bool suspended;
534 u8 wake_reason;
535 bdaddr_t wake_addr;
536 u8 wake_addr_type;
537
538 struct hci_conn_hash conn_hash;
539
540 struct list_head mesh_pending;
541 struct list_head mgmt_pending;
542 struct list_head reject_list;
543 struct list_head accept_list;
544 struct list_head uuids;
545 struct list_head link_keys;
546 struct list_head long_term_keys;
547 struct list_head identity_resolving_keys;
548 struct list_head remote_oob_data;
549 struct list_head le_accept_list;
550 struct list_head le_resolv_list;
551 struct list_head le_conn_params;
552 struct list_head pend_le_conns;
553 struct list_head pend_le_reports;
554 struct list_head blocked_keys;
555 struct list_head local_codecs;
556
557 struct hci_dev_stats stat;
558
559 atomic_t promisc;
560
561 const char *hw_info;
562 const char *fw_info;
563 struct dentry *debugfs;
564
565 struct hci_devcoredump dump;
566
567 struct device dev;
568
569 struct rfkill *rfkill;
570
571 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
572 hci_conn_flags_t conn_flags;
573
574 __s8 adv_tx_power;
575 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
576 __u8 adv_data_len;
577 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
578 __u8 scan_rsp_data_len;
579 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
580 __u8 per_adv_data_len;
581
582 struct list_head adv_instances;
583 unsigned int adv_instance_cnt;
584 __u8 cur_adv_instance;
585 __u16 adv_instance_timeout;
586 struct delayed_work adv_instance_expire;
587
588 struct idr adv_monitors_idr;
589 unsigned int adv_monitors_cnt;
590
591 __u8 irk[16];
592 __u32 rpa_timeout;
593 struct delayed_work rpa_expired;
594 bdaddr_t rpa;
595
596 struct delayed_work mesh_send_done;
597
598 enum {
599 INTERLEAVE_SCAN_NONE,
600 INTERLEAVE_SCAN_NO_FILTER,
601 INTERLEAVE_SCAN_ALLOWLIST
602 } interleave_scan_state;
603
604 struct delayed_work interleave_scan;
605
606 struct list_head monitored_devices;
607 bool advmon_pend_notify;
608
609 #if IS_ENABLED(CONFIG_BT_LEDS)
610 struct led_trigger *power_led;
611 #endif
612
613 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
614 __u16 msft_opcode;
615 void *msft_data;
616 bool msft_curve_validity;
617 #endif
618
619 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
620 bool aosp_capable;
621 bool aosp_quality_report;
622 #endif
623
624 int (*open)(struct hci_dev *hdev);
625 int (*close)(struct hci_dev *hdev);
626 int (*flush)(struct hci_dev *hdev);
627 int (*setup)(struct hci_dev *hdev);
628 int (*shutdown)(struct hci_dev *hdev);
629 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
630 void (*notify)(struct hci_dev *hdev, unsigned int evt);
631 void (*hw_error)(struct hci_dev *hdev, u8 code);
632 int (*post_init)(struct hci_dev *hdev);
633 int (*set_diag)(struct hci_dev *hdev, bool enable);
634 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
635 void (*cmd_timeout)(struct hci_dev *hdev);
636 void (*reset)(struct hci_dev *hdev);
637 bool (*wakeup)(struct hci_dev *hdev);
638 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
639 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
640 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
641 struct bt_codec *codec, __u8 *vnd_len,
642 __u8 **vnd_data);
643 u8 (*classify_pkt_type)(struct hci_dev *hdev, struct sk_buff *skb);
644 };
645
646 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
647
648 enum conn_reasons {
649 CONN_REASON_PAIR_DEVICE,
650 CONN_REASON_L2CAP_CHAN,
651 CONN_REASON_SCO_CONNECT,
652 CONN_REASON_ISO_CONNECT,
653 };
654
655 struct hci_conn {
656 struct list_head list;
657
658 atomic_t refcnt;
659
660 bdaddr_t dst;
661 __u8 dst_type;
662 bdaddr_t src;
663 __u8 src_type;
664 bdaddr_t init_addr;
665 __u8 init_addr_type;
666 bdaddr_t resp_addr;
667 __u8 resp_addr_type;
668 __u8 adv_instance;
669 __u16 handle;
670 __u16 sync_handle;
671 __u16 state;
672 __u16 mtu;
673 __u8 mode;
674 __u8 type;
675 __u8 role;
676 bool out;
677 __u8 attempt;
678 __u8 dev_class[3];
679 __u8 features[HCI_MAX_PAGES][8];
680 __u16 pkt_type;
681 __u16 link_policy;
682 __u8 key_type;
683 __u8 auth_type;
684 __u8 sec_level;
685 __u8 pending_sec_level;
686 __u8 pin_length;
687 __u8 enc_key_size;
688 __u8 io_capability;
689 __u32 passkey_notify;
690 __u8 passkey_entered;
691 __u16 disc_timeout;
692 __u16 conn_timeout;
693 __u16 setting;
694 __u16 auth_payload_timeout;
695 __u16 le_conn_min_interval;
696 __u16 le_conn_max_interval;
697 __u16 le_conn_interval;
698 __u16 le_conn_latency;
699 __u16 le_supv_timeout;
700 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
701 __u8 le_adv_data_len;
702 __u8 le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
703 __u16 le_per_adv_data_len;
704 __u16 le_per_adv_data_offset;
705 __u8 le_adv_phy;
706 __u8 le_adv_sec_phy;
707 __u8 le_tx_phy;
708 __u8 le_rx_phy;
709 __s8 rssi;
710 __s8 tx_power;
711 __s8 max_tx_power;
712 struct bt_iso_qos iso_qos;
713 unsigned long flags;
714
715 enum conn_reasons conn_reason;
716 __u8 abort_reason;
717
718 __u32 clock;
719 __u16 clock_accuracy;
720
721 unsigned long conn_info_timestamp;
722
723 __u8 remote_cap;
724 __u8 remote_auth;
725 __u8 remote_id;
726
727 unsigned int sent;
728
729 struct sk_buff_head data_q;
730 struct list_head chan_list;
731
732 struct delayed_work disc_work;
733 struct delayed_work auto_accept_work;
734 struct delayed_work idle_work;
735 struct delayed_work le_conn_timeout;
736
737 struct device dev;
738 struct dentry *debugfs;
739
740 struct hci_dev *hdev;
741 void *l2cap_data;
742 void *sco_data;
743 void *iso_data;
744
745 struct list_head link_list;
746 struct hci_conn *parent;
747 struct hci_link *link;
748
749 struct bt_codec codec;
750
751 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
752 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
753 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
754
755 void (*cleanup)(struct hci_conn *conn);
756 };
757
758 struct hci_link {
759 struct list_head list;
760 struct hci_conn *conn;
761 };
762
763 struct hci_chan {
764 struct list_head list;
765 __u16 handle;
766 struct hci_conn *conn;
767 struct sk_buff_head data_q;
768 unsigned int sent;
769 __u8 state;
770 };
771
772 struct hci_conn_params {
773 struct list_head list;
774 struct list_head action;
775
776 bdaddr_t addr;
777 u8 addr_type;
778
779 u16 conn_min_interval;
780 u16 conn_max_interval;
781 u16 conn_latency;
782 u16 supervision_timeout;
783
784 enum {
785 HCI_AUTO_CONN_DISABLED,
786 HCI_AUTO_CONN_REPORT,
787 HCI_AUTO_CONN_DIRECT,
788 HCI_AUTO_CONN_ALWAYS,
789 HCI_AUTO_CONN_LINK_LOSS,
790 HCI_AUTO_CONN_EXPLICIT,
791 } auto_connect;
792
793 struct hci_conn *conn;
794 bool explicit_connect;
795 /* Accessed without hdev->lock: */
796 hci_conn_flags_t flags;
797 u8 privacy_mode;
798 };
799
800 extern struct list_head hci_dev_list;
801 extern struct list_head hci_cb_list;
802 extern rwlock_t hci_dev_list_lock;
803 extern struct mutex hci_cb_list_lock;
804
805 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
806 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
807 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
808 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
809 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
810 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
811 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
812
813 #define hci_dev_clear_volatile_flags(hdev) \
814 do { \
815 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
816 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
817 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
818 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
819 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
820 } while (0)
821
822 #define hci_dev_le_state_simultaneous(hdev) \
823 (!test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) && \
824 (hdev->le_states[4] & 0x08) && /* Central */ \
825 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
826 (hdev->le_states[3] & 0x10)) /* Simultaneous */
827
828 /* ----- HCI interface to upper protocols ----- */
829 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
830 int l2cap_disconn_ind(struct hci_conn *hcon);
831 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
832
833 #if IS_ENABLED(CONFIG_BT_BREDR)
834 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
835 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
836 #else
837 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
838 __u8 *flags)
839 {
840 return 0;
841 }
842
843 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
844 {
845 }
846 #endif
847
848 #if IS_ENABLED(CONFIG_BT_LE)
849 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
850 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
851 #else
852 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
853 __u8 *flags)
854 {
855 return 0;
856 }
857 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
858 u16 flags)
859 {
860 }
861 #endif
862
863 /* ----- Inquiry cache ----- */
864 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
865 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
866
867 static inline void discovery_init(struct hci_dev *hdev)
868 {
869 hdev->discovery.state = DISCOVERY_STOPPED;
870 INIT_LIST_HEAD(&hdev->discovery.all);
871 INIT_LIST_HEAD(&hdev->discovery.unknown);
872 INIT_LIST_HEAD(&hdev->discovery.resolve);
873 hdev->discovery.report_invalid_rssi = true;
874 hdev->discovery.rssi = HCI_RSSI_INVALID;
875 }
876
877 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
878 {
879 hdev->discovery.result_filtering = false;
880 hdev->discovery.report_invalid_rssi = true;
881 hdev->discovery.rssi = HCI_RSSI_INVALID;
882 hdev->discovery.uuid_count = 0;
883 kfree(hdev->discovery.uuids);
884 hdev->discovery.uuids = NULL;
885 }
886
887 bool hci_discovery_active(struct hci_dev *hdev);
888
889 void hci_discovery_set_state(struct hci_dev *hdev, int state);
890
891 static inline int inquiry_cache_empty(struct hci_dev *hdev)
892 {
893 return list_empty(&hdev->discovery.all);
894 }
895
896 static inline long inquiry_cache_age(struct hci_dev *hdev)
897 {
898 struct discovery_state *c = &hdev->discovery;
899 return jiffies - c->timestamp;
900 }
901
902 static inline long inquiry_entry_age(struct inquiry_entry *e)
903 {
904 return jiffies - e->timestamp;
905 }
906
907 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
908 bdaddr_t *bdaddr);
909 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
910 bdaddr_t *bdaddr);
911 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
912 bdaddr_t *bdaddr,
913 int state);
914 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
915 struct inquiry_entry *ie);
916 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
917 bool name_known);
918 void hci_inquiry_cache_flush(struct hci_dev *hdev);
919
920 /* ----- HCI Connections ----- */
921 enum {
922 HCI_CONN_AUTH_PEND,
923 HCI_CONN_ENCRYPT_PEND,
924 HCI_CONN_RSWITCH_PEND,
925 HCI_CONN_MODE_CHANGE_PEND,
926 HCI_CONN_SCO_SETUP_PEND,
927 HCI_CONN_MGMT_CONNECTED,
928 HCI_CONN_SSP_ENABLED,
929 HCI_CONN_SC_ENABLED,
930 HCI_CONN_AES_CCM,
931 HCI_CONN_POWER_SAVE,
932 HCI_CONN_FLUSH_KEY,
933 HCI_CONN_ENCRYPT,
934 HCI_CONN_AUTH,
935 HCI_CONN_SECURE,
936 HCI_CONN_FIPS,
937 HCI_CONN_STK_ENCRYPT,
938 HCI_CONN_AUTH_INITIATOR,
939 HCI_CONN_DROP,
940 HCI_CONN_CANCEL,
941 HCI_CONN_PARAM_REMOVAL_PEND,
942 HCI_CONN_NEW_LINK_KEY,
943 HCI_CONN_SCANNING,
944 HCI_CONN_AUTH_FAILURE,
945 HCI_CONN_PER_ADV,
946 HCI_CONN_BIG_CREATED,
947 HCI_CONN_CREATE_CIS,
948 HCI_CONN_BIG_SYNC,
949 HCI_CONN_BIG_SYNC_FAILED,
950 HCI_CONN_PA_SYNC,
951 HCI_CONN_PA_SYNC_FAILED,
952 };
953
954 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
955 {
956 struct hci_dev *hdev = conn->hdev;
957 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
958 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
959 }
960
961 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
962 {
963 struct hci_dev *hdev = conn->hdev;
964 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
965 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
966 }
967
968 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
969 {
970 struct hci_conn_hash *h = &hdev->conn_hash;
971 list_add_tail_rcu(&c->list, &h->list);
972 switch (c->type) {
973 case ACL_LINK:
974 h->acl_num++;
975 break;
976 case LE_LINK:
977 h->le_num++;
978 if (c->role == HCI_ROLE_SLAVE)
979 h->le_num_peripheral++;
980 break;
981 case SCO_LINK:
982 case ESCO_LINK:
983 h->sco_num++;
984 break;
985 case ISO_LINK:
986 h->iso_num++;
987 break;
988 }
989 }
990
991 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
992 {
993 struct hci_conn_hash *h = &hdev->conn_hash;
994
995 list_del_rcu(&c->list);
996 synchronize_rcu();
997
998 switch (c->type) {
999 case ACL_LINK:
1000 h->acl_num--;
1001 break;
1002 case LE_LINK:
1003 h->le_num--;
1004 if (c->role == HCI_ROLE_SLAVE)
1005 h->le_num_peripheral--;
1006 break;
1007 case SCO_LINK:
1008 case ESCO_LINK:
1009 h->sco_num--;
1010 break;
1011 case ISO_LINK:
1012 h->iso_num--;
1013 break;
1014 }
1015 }
1016
1017 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1018 {
1019 struct hci_conn_hash *h = &hdev->conn_hash;
1020 switch (type) {
1021 case ACL_LINK:
1022 return h->acl_num;
1023 case LE_LINK:
1024 return h->le_num;
1025 case SCO_LINK:
1026 case ESCO_LINK:
1027 return h->sco_num;
1028 case ISO_LINK:
1029 return h->iso_num;
1030 default:
1031 return 0;
1032 }
1033 }
1034
1035 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1036 {
1037 struct hci_conn_hash *c = &hdev->conn_hash;
1038
1039 return c->acl_num + c->sco_num + c->le_num + c->iso_num;
1040 }
1041
1042 static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
1043 {
1044 struct hci_conn_hash *h = &hdev->conn_hash;
1045 struct hci_conn *c;
1046
1047 rcu_read_lock();
1048
1049 list_for_each_entry_rcu(c, &h->list, list) {
1050 if (c == conn) {
1051 rcu_read_unlock();
1052 return true;
1053 }
1054 }
1055 rcu_read_unlock();
1056
1057 return false;
1058 }
1059
1060 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1061 {
1062 struct hci_conn_hash *h = &hdev->conn_hash;
1063 struct hci_conn *c;
1064 __u8 type = INVALID_LINK;
1065
1066 rcu_read_lock();
1067
1068 list_for_each_entry_rcu(c, &h->list, list) {
1069 if (c->handle == handle) {
1070 type = c->type;
1071 break;
1072 }
1073 }
1074
1075 rcu_read_unlock();
1076
1077 return type;
1078 }
1079
1080 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1081 bdaddr_t *ba, __u8 bis)
1082 {
1083 struct hci_conn_hash *h = &hdev->conn_hash;
1084 struct hci_conn *c;
1085
1086 rcu_read_lock();
1087
1088 list_for_each_entry_rcu(c, &h->list, list) {
1089 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1090 continue;
1091
1092 if (c->iso_qos.bcast.bis == bis) {
1093 rcu_read_unlock();
1094 return c;
1095 }
1096 }
1097 rcu_read_unlock();
1098
1099 return NULL;
1100 }
1101
1102 static inline struct hci_conn *
1103 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1104 bdaddr_t *ba,
1105 __u8 big, __u8 bis)
1106 {
1107 struct hci_conn_hash *h = &hdev->conn_hash;
1108 struct hci_conn *c;
1109
1110 rcu_read_lock();
1111
1112 list_for_each_entry_rcu(c, &h->list, list) {
1113 if (bacmp(&c->dst, ba) || c->type != ISO_LINK ||
1114 !test_bit(HCI_CONN_PER_ADV, &c->flags))
1115 continue;
1116
1117 if (c->iso_qos.bcast.big == big &&
1118 c->iso_qos.bcast.bis == bis) {
1119 rcu_read_unlock();
1120 return c;
1121 }
1122 }
1123 rcu_read_unlock();
1124
1125 return NULL;
1126 }
1127
1128 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1129 __u16 handle)
1130 {
1131 struct hci_conn_hash *h = &hdev->conn_hash;
1132 struct hci_conn *c;
1133
1134 rcu_read_lock();
1135
1136 list_for_each_entry_rcu(c, &h->list, list) {
1137 if (c->handle == handle) {
1138 rcu_read_unlock();
1139 return c;
1140 }
1141 }
1142 rcu_read_unlock();
1143
1144 return NULL;
1145 }
1146
1147 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1148 __u8 type, bdaddr_t *ba)
1149 {
1150 struct hci_conn_hash *h = &hdev->conn_hash;
1151 struct hci_conn *c;
1152
1153 rcu_read_lock();
1154
1155 list_for_each_entry_rcu(c, &h->list, list) {
1156 if (c->type == type && !bacmp(&c->dst, ba)) {
1157 rcu_read_unlock();
1158 return c;
1159 }
1160 }
1161
1162 rcu_read_unlock();
1163
1164 return NULL;
1165 }
1166
1167 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1168 bdaddr_t *ba,
1169 __u8 ba_type)
1170 {
1171 struct hci_conn_hash *h = &hdev->conn_hash;
1172 struct hci_conn *c;
1173
1174 rcu_read_lock();
1175
1176 list_for_each_entry_rcu(c, &h->list, list) {
1177 if (c->type != LE_LINK)
1178 continue;
1179
1180 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1181 rcu_read_unlock();
1182 return c;
1183 }
1184 }
1185
1186 rcu_read_unlock();
1187
1188 return NULL;
1189 }
1190
1191 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1192 bdaddr_t *ba,
1193 __u8 ba_type,
1194 __u8 cig,
1195 __u8 id)
1196 {
1197 struct hci_conn_hash *h = &hdev->conn_hash;
1198 struct hci_conn *c;
1199
1200 rcu_read_lock();
1201
1202 list_for_each_entry_rcu(c, &h->list, list) {
1203 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1204 continue;
1205
1206 /* Match CIG ID if set */
1207 if (cig != c->iso_qos.ucast.cig)
1208 continue;
1209
1210 /* Match CIS ID if set */
1211 if (id != c->iso_qos.ucast.cis)
1212 continue;
1213
1214 /* Match destination address if set */
1215 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1216 rcu_read_unlock();
1217 return c;
1218 }
1219 }
1220
1221 rcu_read_unlock();
1222
1223 return NULL;
1224 }
1225
1226 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1227 __u8 handle)
1228 {
1229 struct hci_conn_hash *h = &hdev->conn_hash;
1230 struct hci_conn *c;
1231
1232 rcu_read_lock();
1233
1234 list_for_each_entry_rcu(c, &h->list, list) {
1235 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1236 continue;
1237
1238 if (handle == c->iso_qos.ucast.cig) {
1239 rcu_read_unlock();
1240 return c;
1241 }
1242 }
1243
1244 rcu_read_unlock();
1245
1246 return NULL;
1247 }
1248
1249 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1250 __u8 handle)
1251 {
1252 struct hci_conn_hash *h = &hdev->conn_hash;
1253 struct hci_conn *c;
1254
1255 rcu_read_lock();
1256
1257 list_for_each_entry_rcu(c, &h->list, list) {
1258 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1259 continue;
1260
1261 if (handle == c->iso_qos.bcast.big) {
1262 rcu_read_unlock();
1263 return c;
1264 }
1265 }
1266
1267 rcu_read_unlock();
1268
1269 return NULL;
1270 }
1271
1272 static inline struct hci_conn *
1273 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state)
1274 {
1275 struct hci_conn_hash *h = &hdev->conn_hash;
1276 struct hci_conn *c;
1277
1278 rcu_read_lock();
1279
1280 list_for_each_entry_rcu(c, &h->list, list) {
1281 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1282 c->state != state)
1283 continue;
1284
1285 if (handle == c->iso_qos.bcast.big) {
1286 rcu_read_unlock();
1287 return c;
1288 }
1289 }
1290
1291 rcu_read_unlock();
1292
1293 return NULL;
1294 }
1295
1296 static inline struct hci_conn *
1297 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1298 {
1299 struct hci_conn_hash *h = &hdev->conn_hash;
1300 struct hci_conn *c;
1301
1302 rcu_read_lock();
1303
1304 list_for_each_entry_rcu(c, &h->list, list) {
1305 if (c->type != ISO_LINK ||
1306 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1307 continue;
1308
1309 if (c->iso_qos.bcast.big == big) {
1310 rcu_read_unlock();
1311 return c;
1312 }
1313 }
1314 rcu_read_unlock();
1315
1316 return NULL;
1317 }
1318
1319 static inline struct hci_conn *
1320 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1321 {
1322 struct hci_conn_hash *h = &hdev->conn_hash;
1323 struct hci_conn *c;
1324
1325 rcu_read_lock();
1326
1327 list_for_each_entry_rcu(c, &h->list, list) {
1328 if (c->type != ISO_LINK)
1329 continue;
1330
1331 if (c->sync_handle == sync_handle) {
1332 rcu_read_unlock();
1333 return c;
1334 }
1335 }
1336 rcu_read_unlock();
1337
1338 return NULL;
1339 }
1340
1341 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1342 __u8 type, __u16 state)
1343 {
1344 struct hci_conn_hash *h = &hdev->conn_hash;
1345 struct hci_conn *c;
1346
1347 rcu_read_lock();
1348
1349 list_for_each_entry_rcu(c, &h->list, list) {
1350 if (c->type == type && c->state == state) {
1351 rcu_read_unlock();
1352 return c;
1353 }
1354 }
1355
1356 rcu_read_unlock();
1357
1358 return NULL;
1359 }
1360
1361 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1362 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1363 hci_conn_func_t func, __u8 type,
1364 __u16 state, void *data)
1365 {
1366 struct hci_conn_hash *h = &hdev->conn_hash;
1367 struct hci_conn *c;
1368
1369 if (!func)
1370 return;
1371
1372 rcu_read_lock();
1373
1374 list_for_each_entry_rcu(c, &h->list, list) {
1375 if (c->type == type && c->state == state)
1376 func(c, data);
1377 }
1378
1379 rcu_read_unlock();
1380 }
1381
1382 static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1383 hci_conn_func_t func, __u8 type,
1384 __u8 flag, void *data)
1385 {
1386 struct hci_conn_hash *h = &hdev->conn_hash;
1387 struct hci_conn *c;
1388
1389 if (!func)
1390 return;
1391
1392 rcu_read_lock();
1393
1394 list_for_each_entry_rcu(c, &h->list, list) {
1395 if (c->type == type && test_bit(flag, &c->flags))
1396 func(c, data);
1397 }
1398
1399 rcu_read_unlock();
1400 }
1401
1402 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1403 {
1404 struct hci_conn_hash *h = &hdev->conn_hash;
1405 struct hci_conn *c;
1406
1407 rcu_read_lock();
1408
1409 list_for_each_entry_rcu(c, &h->list, list) {
1410 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1411 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1412 rcu_read_unlock();
1413 return c;
1414 }
1415 }
1416
1417 rcu_read_unlock();
1418
1419 return NULL;
1420 }
1421
1422 /* Returns true if an le connection is in the scanning state */
1423 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1424 {
1425 struct hci_conn_hash *h = &hdev->conn_hash;
1426 struct hci_conn *c;
1427
1428 rcu_read_lock();
1429
1430 list_for_each_entry_rcu(c, &h->list, list) {
1431 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1432 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1433 rcu_read_unlock();
1434 return true;
1435 }
1436 }
1437
1438 rcu_read_unlock();
1439
1440 return false;
1441 }
1442
1443 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1444 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1445 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1446 bool hci_iso_setup_path(struct hci_conn *conn);
1447 int hci_le_create_cis_pending(struct hci_dev *hdev);
1448 int hci_conn_check_create_cis(struct hci_conn *conn);
1449
1450 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1451 u8 role, u16 handle);
1452 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1453 bdaddr_t *dst, u8 role);
1454 void hci_conn_del(struct hci_conn *conn);
1455 void hci_conn_hash_flush(struct hci_dev *hdev);
1456
1457 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1458 void hci_chan_del(struct hci_chan *chan);
1459 void hci_chan_list_flush(struct hci_conn *conn);
1460 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1461
1462 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1463 u8 dst_type, u8 sec_level,
1464 u16 conn_timeout,
1465 enum conn_reasons conn_reason);
1466 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1467 u8 dst_type, bool dst_resolved, u8 sec_level,
1468 u16 conn_timeout, u8 role, u8 phy, u8 sec_phy);
1469 void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1470 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1471 u8 sec_level, u8 auth_type,
1472 enum conn_reasons conn_reason, u16 timeout);
1473 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1474 __u16 setting, struct bt_codec *codec,
1475 u16 timeout);
1476 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1477 __u8 dst_type, struct bt_iso_qos *qos);
1478 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1479 struct bt_iso_qos *qos,
1480 __u8 base_len, __u8 *base);
1481 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1482 __u8 dst_type, struct bt_iso_qos *qos);
1483 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1484 __u8 dst_type, struct bt_iso_qos *qos,
1485 __u8 data_len, __u8 *data);
1486 struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
1487 __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
1488 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1489 struct bt_iso_qos *qos,
1490 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1491 int hci_conn_check_link_mode(struct hci_conn *conn);
1492 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1493 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1494 bool initiator);
1495 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1496
1497 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1498
1499 void hci_conn_failed(struct hci_conn *conn, u8 status);
1500 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1501
1502 /*
1503 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1504 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1505 * working or anything else. They just guarantee that the object is available
1506 * and can be dereferenced. So you can use its locks, local variables and any
1507 * other constant data.
1508 * Before accessing runtime data, you _must_ lock the object and then check that
1509 * it is still running. As soon as you release the locks, the connection might
1510 * get dropped, though.
1511 *
1512 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1513 * how long the underlying connection is held. So every channel that runs on the
1514 * hci_conn object calls this to prevent the connection from disappearing. As
1515 * long as you hold a device, you must also guarantee that you have a valid
1516 * reference to the device via hci_conn_get() (or the initial reference from
1517 * hci_conn_add()).
1518 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1519 * break because nobody cares for that. But this means, we cannot use
1520 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1521 */
1522
1523 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1524 {
1525 get_device(&conn->dev);
1526 return conn;
1527 }
1528
1529 static inline void hci_conn_put(struct hci_conn *conn)
1530 {
1531 put_device(&conn->dev);
1532 }
1533
1534 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1535 {
1536 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1537
1538 atomic_inc(&conn->refcnt);
1539 cancel_delayed_work(&conn->disc_work);
1540
1541 return conn;
1542 }
1543
1544 static inline void hci_conn_drop(struct hci_conn *conn)
1545 {
1546 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1547
1548 if (atomic_dec_and_test(&conn->refcnt)) {
1549 unsigned long timeo;
1550
1551 switch (conn->type) {
1552 case ACL_LINK:
1553 case LE_LINK:
1554 cancel_delayed_work(&conn->idle_work);
1555 if (conn->state == BT_CONNECTED) {
1556 timeo = conn->disc_timeout;
1557 if (!conn->out)
1558 timeo *= 2;
1559 } else {
1560 timeo = 0;
1561 }
1562 break;
1563
1564 default:
1565 timeo = 0;
1566 break;
1567 }
1568
1569 cancel_delayed_work(&conn->disc_work);
1570 queue_delayed_work(conn->hdev->workqueue,
1571 &conn->disc_work, timeo);
1572 }
1573 }
1574
1575 /* ----- HCI Devices ----- */
1576 static inline void hci_dev_put(struct hci_dev *d)
1577 {
1578 BT_DBG("%s orig refcnt %d", d->name,
1579 kref_read(&d->dev.kobj.kref));
1580
1581 put_device(&d->dev);
1582 }
1583
1584 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1585 {
1586 BT_DBG("%s orig refcnt %d", d->name,
1587 kref_read(&d->dev.kobj.kref));
1588
1589 get_device(&d->dev);
1590 return d;
1591 }
1592
1593 #define hci_dev_lock(d) mutex_lock(&d->lock)
1594 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1595
1596 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1597 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1598
1599 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1600 {
1601 return dev_get_drvdata(&hdev->dev);
1602 }
1603
1604 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1605 {
1606 dev_set_drvdata(&hdev->dev, data);
1607 }
1608
1609 static inline void *hci_get_priv(struct hci_dev *hdev)
1610 {
1611 return (char *)hdev + sizeof(*hdev);
1612 }
1613
1614 struct hci_dev *hci_dev_get(int index);
1615 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1616
1617 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1618
1619 static inline struct hci_dev *hci_alloc_dev(void)
1620 {
1621 return hci_alloc_dev_priv(0);
1622 }
1623
1624 void hci_free_dev(struct hci_dev *hdev);
1625 int hci_register_dev(struct hci_dev *hdev);
1626 void hci_unregister_dev(struct hci_dev *hdev);
1627 void hci_release_dev(struct hci_dev *hdev);
1628 int hci_register_suspend_notifier(struct hci_dev *hdev);
1629 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1630 int hci_suspend_dev(struct hci_dev *hdev);
1631 int hci_resume_dev(struct hci_dev *hdev);
1632 int hci_reset_dev(struct hci_dev *hdev);
1633 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1634 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1635 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1636 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1637
1638 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1639 {
1640 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1641 hdev->msft_opcode = opcode;
1642 #endif
1643 }
1644
1645 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1646 {
1647 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1648 hdev->aosp_capable = true;
1649 #endif
1650 }
1651
1652 static inline void hci_devcd_setup(struct hci_dev *hdev)
1653 {
1654 #ifdef CONFIG_DEV_COREDUMP
1655 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1656 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1657 skb_queue_head_init(&hdev->dump.dump_q);
1658 #endif
1659 }
1660
1661 int hci_dev_open(__u16 dev);
1662 int hci_dev_close(__u16 dev);
1663 int hci_dev_do_close(struct hci_dev *hdev);
1664 int hci_dev_reset(__u16 dev);
1665 int hci_dev_reset_stat(__u16 dev);
1666 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1667 int hci_get_dev_list(void __user *arg);
1668 int hci_get_dev_info(void __user *arg);
1669 int hci_get_conn_list(void __user *arg);
1670 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1671 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1672 int hci_inquiry(void __user *arg);
1673
1674 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1675 bdaddr_t *bdaddr, u8 type);
1676 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1677 struct list_head *list, bdaddr_t *bdaddr,
1678 u8 type);
1679 struct bdaddr_list_with_flags *
1680 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1681 u8 type);
1682 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1683 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1684 u8 type, u8 *peer_irk, u8 *local_irk);
1685 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1686 u8 type, u32 flags);
1687 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1688 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1689 u8 type);
1690 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1691 u8 type);
1692 void hci_bdaddr_list_clear(struct list_head *list);
1693
1694 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1695 bdaddr_t *addr, u8 addr_type);
1696 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1697 bdaddr_t *addr, u8 addr_type);
1698 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1699 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1700 void hci_conn_params_free(struct hci_conn_params *param);
1701
1702 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1703 void hci_pend_le_list_add(struct hci_conn_params *param,
1704 struct list_head *list);
1705 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1706 bdaddr_t *addr,
1707 u8 addr_type);
1708
1709 void hci_uuids_clear(struct hci_dev *hdev);
1710
1711 void hci_link_keys_clear(struct hci_dev *hdev);
1712 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1713 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1714 bdaddr_t *bdaddr, u8 *val, u8 type,
1715 u8 pin_len, bool *persistent);
1716 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1717 u8 addr_type, u8 type, u8 authenticated,
1718 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1719 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1720 u8 addr_type, u8 role);
1721 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1722 void hci_smp_ltks_clear(struct hci_dev *hdev);
1723 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1724
1725 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1726 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1727 u8 addr_type);
1728 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1729 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1730 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1731 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1732 void hci_blocked_keys_clear(struct hci_dev *hdev);
1733 void hci_smp_irks_clear(struct hci_dev *hdev);
1734
1735 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1736
1737 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1738 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1739 bdaddr_t *bdaddr, u8 bdaddr_type);
1740 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1741 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1742 u8 *hash256, u8 *rand256);
1743 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1744 u8 bdaddr_type);
1745
1746 void hci_adv_instances_clear(struct hci_dev *hdev);
1747 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1748 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1749 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1750 u32 flags, u16 adv_data_len, u8 *adv_data,
1751 u16 scan_rsp_len, u8 *scan_rsp_data,
1752 u16 timeout, u16 duration, s8 tx_power,
1753 u32 min_interval, u32 max_interval,
1754 u8 mesh_handle);
1755 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1756 u32 flags, u8 data_len, u8 *data,
1757 u32 min_interval, u32 max_interval);
1758 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1759 u16 adv_data_len, u8 *adv_data,
1760 u16 scan_rsp_len, u8 *scan_rsp_data);
1761 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1762 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1763 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1764 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1765
1766 void hci_adv_monitors_clear(struct hci_dev *hdev);
1767 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1768 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1769 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1770 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1771 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1772 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1773
1774 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1775
1776 void hci_init_sysfs(struct hci_dev *hdev);
1777 void hci_conn_init_sysfs(struct hci_conn *conn);
1778 void hci_conn_add_sysfs(struct hci_conn *conn);
1779 void hci_conn_del_sysfs(struct hci_conn *conn);
1780
1781 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1782 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1783
1784 /* ----- LMP capabilities ----- */
1785 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1786 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1787 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1788 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1789 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1790 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1791 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1792 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1793 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1794 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1795 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1796 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1797 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1798 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1799 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1800 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1801 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1802 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1803 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1804 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1805 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1806 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1807 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1808 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1809
1810 /* ----- Extended LMP capabilities ----- */
1811 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1812 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1813 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1814 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1815 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1816 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1817
1818 /* ----- Host capabilities ----- */
1819 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1820 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1821 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1822 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1823
1824 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1825 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1826 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1827 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1828 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1829 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1830 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1831 !adv->rpa_expired)
1832
1833 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1834 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1835
1836 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1837
1838 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1839 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1840
1841 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1842 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1843 &(dev)->quirks))
1844
1845 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1846 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1847
1848 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1849
1850 /* Use LL Privacy based address resolution if supported */
1851 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1852 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1853
1854 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1855 (hdev->commands[39] & 0x04))
1856
1857 #define read_key_size_capable(dev) \
1858 ((dev)->commands[20] & 0x10 && \
1859 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
1860
1861 /* Use enhanced synchronous connection if command is supported and its quirk
1862 * has not been set.
1863 */
1864 #define enhanced_sync_conn_capable(dev) \
1865 (((dev)->commands[29] & 0x08) && \
1866 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1867
1868 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1869 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1870 ((dev)->commands[37] & 0x40) && \
1871 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1872
1873 /* Use ext create connection if command is supported */
1874 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1875
1876 /* Extended advertising support */
1877 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1878
1879 /* Maximum advertising length */
1880 #define max_adv_len(dev) \
1881 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1882
1883 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1884 *
1885 * C24: Mandatory if the LE Controller supports Connection State and either
1886 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1887 */
1888 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1889 ext_adv_capable(dev))
1890
1891 /* Periodic advertising support */
1892 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1893
1894 /* CIS Master/Slave and BIS support */
1895 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1896 #define cis_capable(dev) \
1897 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1898 #define cis_central_capable(dev) \
1899 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1900 #define cis_peripheral_capable(dev) \
1901 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1902 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1903 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1904
1905 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1906 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1907
1908 /* ----- HCI protocols ----- */
1909 #define HCI_PROTO_DEFER 0x01
1910
1911 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1912 __u8 type, __u8 *flags)
1913 {
1914 switch (type) {
1915 case ACL_LINK:
1916 return l2cap_connect_ind(hdev, bdaddr);
1917
1918 case SCO_LINK:
1919 case ESCO_LINK:
1920 return sco_connect_ind(hdev, bdaddr, flags);
1921
1922 case ISO_LINK:
1923 return iso_connect_ind(hdev, bdaddr, flags);
1924
1925 default:
1926 BT_ERR("unknown link type %d", type);
1927 return -EINVAL;
1928 }
1929 }
1930
1931 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1932 {
1933 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1934 return HCI_ERROR_REMOTE_USER_TERM;
1935
1936 return l2cap_disconn_ind(conn);
1937 }
1938
1939 /* ----- HCI callbacks ----- */
1940 struct hci_cb {
1941 struct list_head list;
1942
1943 char *name;
1944
1945 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1946 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1947 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1948 __u8 encrypt);
1949 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1950 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1951 };
1952
1953 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1954 {
1955 struct hci_cb *cb;
1956
1957 mutex_lock(&hci_cb_list_lock);
1958 list_for_each_entry(cb, &hci_cb_list, list) {
1959 if (cb->connect_cfm)
1960 cb->connect_cfm(conn, status);
1961 }
1962 mutex_unlock(&hci_cb_list_lock);
1963
1964 if (conn->connect_cfm_cb)
1965 conn->connect_cfm_cb(conn, status);
1966 }
1967
1968 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1969 {
1970 struct hci_cb *cb;
1971
1972 mutex_lock(&hci_cb_list_lock);
1973 list_for_each_entry(cb, &hci_cb_list, list) {
1974 if (cb->disconn_cfm)
1975 cb->disconn_cfm(conn, reason);
1976 }
1977 mutex_unlock(&hci_cb_list_lock);
1978
1979 if (conn->disconn_cfm_cb)
1980 conn->disconn_cfm_cb(conn, reason);
1981 }
1982
1983 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1984 {
1985 struct hci_cb *cb;
1986 __u8 encrypt;
1987
1988 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1989 return;
1990
1991 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1992
1993 mutex_lock(&hci_cb_list_lock);
1994 list_for_each_entry(cb, &hci_cb_list, list) {
1995 if (cb->security_cfm)
1996 cb->security_cfm(conn, status, encrypt);
1997 }
1998 mutex_unlock(&hci_cb_list_lock);
1999
2000 if (conn->security_cfm_cb)
2001 conn->security_cfm_cb(conn, status);
2002 }
2003
2004 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2005 {
2006 struct hci_cb *cb;
2007 __u8 encrypt;
2008
2009 if (conn->state == BT_CONFIG) {
2010 if (!status)
2011 conn->state = BT_CONNECTED;
2012
2013 hci_connect_cfm(conn, status);
2014 hci_conn_drop(conn);
2015 return;
2016 }
2017
2018 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2019 encrypt = 0x00;
2020 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2021 encrypt = 0x02;
2022 else
2023 encrypt = 0x01;
2024
2025 if (!status) {
2026 if (conn->sec_level == BT_SECURITY_SDP)
2027 conn->sec_level = BT_SECURITY_LOW;
2028
2029 if (conn->pending_sec_level > conn->sec_level)
2030 conn->sec_level = conn->pending_sec_level;
2031 }
2032
2033 mutex_lock(&hci_cb_list_lock);
2034 list_for_each_entry(cb, &hci_cb_list, list) {
2035 if (cb->security_cfm)
2036 cb->security_cfm(conn, status, encrypt);
2037 }
2038 mutex_unlock(&hci_cb_list_lock);
2039
2040 if (conn->security_cfm_cb)
2041 conn->security_cfm_cb(conn, status);
2042 }
2043
2044 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2045 {
2046 struct hci_cb *cb;
2047
2048 mutex_lock(&hci_cb_list_lock);
2049 list_for_each_entry(cb, &hci_cb_list, list) {
2050 if (cb->key_change_cfm)
2051 cb->key_change_cfm(conn, status);
2052 }
2053 mutex_unlock(&hci_cb_list_lock);
2054 }
2055
2056 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2057 __u8 role)
2058 {
2059 struct hci_cb *cb;
2060
2061 mutex_lock(&hci_cb_list_lock);
2062 list_for_each_entry(cb, &hci_cb_list, list) {
2063 if (cb->role_switch_cfm)
2064 cb->role_switch_cfm(conn, status, role);
2065 }
2066 mutex_unlock(&hci_cb_list_lock);
2067 }
2068
2069 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2070 {
2071 if (addr_type != ADDR_LE_DEV_RANDOM)
2072 return false;
2073
2074 if ((bdaddr->b[5] & 0xc0) == 0x40)
2075 return true;
2076
2077 return false;
2078 }
2079
2080 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2081 {
2082 if (addr_type == ADDR_LE_DEV_PUBLIC)
2083 return true;
2084
2085 /* Check for Random Static address type */
2086 if ((addr->b[5] & 0xc0) == 0xc0)
2087 return true;
2088
2089 return false;
2090 }
2091
2092 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2093 bdaddr_t *bdaddr, u8 addr_type)
2094 {
2095 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2096 return NULL;
2097
2098 return hci_find_irk_by_rpa(hdev, bdaddr);
2099 }
2100
2101 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2102 u16 to_multiplier)
2103 {
2104 u16 max_latency;
2105
2106 if (min > max) {
2107 BT_WARN("min %d > max %d", min, max);
2108 return -EINVAL;
2109 }
2110
2111 if (min < 6) {
2112 BT_WARN("min %d < 6", min);
2113 return -EINVAL;
2114 }
2115
2116 if (max > 3200) {
2117 BT_WARN("max %d > 3200", max);
2118 return -EINVAL;
2119 }
2120
2121 if (to_multiplier < 10) {
2122 BT_WARN("to_multiplier %d < 10", to_multiplier);
2123 return -EINVAL;
2124 }
2125
2126 if (to_multiplier > 3200) {
2127 BT_WARN("to_multiplier %d > 3200", to_multiplier);
2128 return -EINVAL;
2129 }
2130
2131 if (max >= to_multiplier * 8) {
2132 BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
2133 return -EINVAL;
2134 }
2135
2136 max_latency = (to_multiplier * 4 / max) - 1;
2137 if (latency > 499) {
2138 BT_WARN("latency %d > 499", latency);
2139 return -EINVAL;
2140 }
2141
2142 if (latency > max_latency) {
2143 BT_WARN("latency %d > max_latency %d", latency, max_latency);
2144 return -EINVAL;
2145 }
2146
2147 return 0;
2148 }
2149
2150 int hci_register_cb(struct hci_cb *hcb);
2151 int hci_unregister_cb(struct hci_cb *hcb);
2152
2153 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2154 const void *param);
2155
2156 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2157 const void *param);
2158 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2159 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2160 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2161
2162 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2163 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2164
2165 u32 hci_conn_get_phy(struct hci_conn *conn);
2166
2167 /* ----- HCI Sockets ----- */
2168 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2169 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2170 int flag, struct sock *skip_sk);
2171 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2172 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2173 void *data, u16 data_len, ktime_t tstamp,
2174 int flag, struct sock *skip_sk);
2175
2176 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2177
2178 #define HCI_MGMT_VAR_LEN BIT(0)
2179 #define HCI_MGMT_NO_HDEV BIT(1)
2180 #define HCI_MGMT_UNTRUSTED BIT(2)
2181 #define HCI_MGMT_UNCONFIGURED BIT(3)
2182 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2183
2184 struct hci_mgmt_handler {
2185 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2186 u16 data_len);
2187 size_t data_len;
2188 unsigned long flags;
2189 };
2190
2191 struct hci_mgmt_chan {
2192 struct list_head list;
2193 unsigned short channel;
2194 size_t handler_count;
2195 const struct hci_mgmt_handler *handlers;
2196 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2197 };
2198
2199 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2200 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2201
2202 /* Management interface */
2203 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2204 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2205 BIT(BDADDR_LE_RANDOM))
2206 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2207 BIT(BDADDR_LE_PUBLIC) | \
2208 BIT(BDADDR_LE_RANDOM))
2209
2210 /* These LE scan and inquiry parameters were chosen according to LE General
2211 * Discovery Procedure specification.
2212 */
2213 #define DISCOV_LE_SCAN_WIN 0x0012 /* 11.25 msec */
2214 #define DISCOV_LE_SCAN_INT 0x0012 /* 11.25 msec */
2215 #define DISCOV_LE_SCAN_INT_FAST 0x0060 /* 60 msec */
2216 #define DISCOV_LE_SCAN_WIN_FAST 0x0030 /* 30 msec */
2217 #define DISCOV_LE_SCAN_INT_CONN 0x0060 /* 60 msec */
2218 #define DISCOV_LE_SCAN_WIN_CONN 0x0060 /* 60 msec */
2219 #define DISCOV_LE_SCAN_INT_SLOW1 0x0800 /* 1.28 sec */
2220 #define DISCOV_LE_SCAN_WIN_SLOW1 0x0012 /* 11.25 msec */
2221 #define DISCOV_LE_SCAN_INT_SLOW2 0x1000 /* 2.56 sec */
2222 #define DISCOV_LE_SCAN_WIN_SLOW2 0x0024 /* 22.5 msec */
2223 #define DISCOV_CODED_SCAN_INT_FAST 0x0120 /* 180 msec */
2224 #define DISCOV_CODED_SCAN_WIN_FAST 0x0090 /* 90 msec */
2225 #define DISCOV_CODED_SCAN_INT_SLOW1 0x1800 /* 3.84 sec */
2226 #define DISCOV_CODED_SCAN_WIN_SLOW1 0x0036 /* 33.75 msec */
2227 #define DISCOV_CODED_SCAN_INT_SLOW2 0x3000 /* 7.68 sec */
2228 #define DISCOV_CODED_SCAN_WIN_SLOW2 0x006c /* 67.5 msec */
2229 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2230 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2231 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2232 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2233 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2234 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2235 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2236 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2237 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2238 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2239 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2240 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2241
2242 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2243
2244 void mgmt_fill_version_info(void *ver);
2245 int mgmt_new_settings(struct hci_dev *hdev);
2246 void mgmt_index_added(struct hci_dev *hdev);
2247 void mgmt_index_removed(struct hci_dev *hdev);
2248 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2249 void mgmt_power_on(struct hci_dev *hdev, int err);
2250 void __mgmt_power_off(struct hci_dev *hdev);
2251 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2252 bool persistent);
2253 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2254 u8 *name, u8 name_len);
2255 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2256 u8 link_type, u8 addr_type, u8 reason,
2257 bool mgmt_connected);
2258 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2259 u8 link_type, u8 addr_type, u8 status);
2260 void mgmt_connect_failed(struct hci_dev *hdev, struct hci_conn *conn,
2261 u8 status);
2262 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2263 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2264 u8 status);
2265 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2266 u8 status);
2267 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2268 u8 link_type, u8 addr_type, u32 value,
2269 u8 confirm_hint);
2270 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2271 u8 link_type, u8 addr_type, u8 status);
2272 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2273 u8 link_type, u8 addr_type, u8 status);
2274 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2275 u8 link_type, u8 addr_type);
2276 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2277 u8 link_type, u8 addr_type, u8 status);
2278 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2279 u8 link_type, u8 addr_type, u8 status);
2280 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2281 u8 link_type, u8 addr_type, u32 passkey,
2282 u8 entered);
2283 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2284 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2285 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2286 u8 status);
2287 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2288 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2289 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2290 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2291 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2292 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2293 u64 instant);
2294 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2295 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2296 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2297 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2298 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2299 u8 addr_type);
2300 bool mgmt_powering_down(struct hci_dev *hdev);
2301 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2302 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2303 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2304 bool persistent);
2305 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2306 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2307 u16 max_interval, u16 latency, u16 timeout);
2308 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2309 bool mgmt_get_connectable(struct hci_dev *hdev);
2310 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2311 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2312 u8 instance);
2313 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2314 u8 instance);
2315 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2316 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2317 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2318 bdaddr_t *bdaddr, u8 addr_type);
2319
2320 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2321 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2322 u16 to_multiplier);
2323 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2324 __u8 ltk[16], __u8 key_size);
2325
2326 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2327 u8 *bdaddr_type);
2328
2329 #define SCO_AIRMODE_MASK 0x0003
2330 #define SCO_AIRMODE_CVSD 0x0000
2331 #define SCO_AIRMODE_TRANSP 0x0003
2332
2333 #define LOCAL_CODEC_ACL_MASK BIT(0)
2334 #define LOCAL_CODEC_SCO_MASK BIT(1)
2335
2336 #define TRANSPORT_TYPE_MAX 0x04
2337
2338 #endif /* __HCI_CORE_H */
2339
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