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