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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 */
38struct 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
49struct 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
62struct 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
91struct 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
100struct bdaddr_list {
101 struct list_head list;
102 bdaddr_t bdaddr;
103 u8 bdaddr_type;
104};
105
106struct 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
114struct bt_uuid {
115 struct list_head list;
116 u8 uuid[16];
117 u8 size;
118 u8 svc_hint;
119};
120
121struct smp_csrk {
122 bdaddr_t bdaddr;
123 u8 bdaddr_type;
124 u8 type;
125 u8 val[16];
126};
127
128struct 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
141struct 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
150struct 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
159struct 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
170struct 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
205struct 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
215struct 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
452struct 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
536struct 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
545struct 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
570extern struct list_head hci_dev_list;
571extern struct list_head hci_cb_list;
572extern rwlock_t hci_dev_list_lock;
573extern 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 ----- */
591int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
592int l2cap_disconn_ind(struct hci_conn *hcon);
593void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
594
595#if IS_ENABLED(CONFIG_BT_BREDR)
596int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
597void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
598#else
599static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
600 __u8 *flags)
601{
602 return 0;
603}
604
605static 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
614static 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
624static 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
636bool hci_discovery_active(struct hci_dev *hdev);
637
638void hci_discovery_set_state(struct hci_dev *hdev, int state);
639
640static inline int inquiry_cache_empty(struct hci_dev *hdev)
641{
642 return list_empty(&hdev->discovery.all);
643}
644
645static inline long inquiry_cache_age(struct hci_dev *hdev)
646{
647 struct discovery_state *c = &hdev->discovery;
648 return jiffies - c->timestamp;
649}
650
651static inline long inquiry_entry_age(struct inquiry_entry *e)
652{
653 return jiffies - e->timestamp;
654}
655
656struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
657 bdaddr_t *bdaddr);
658struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
659 bdaddr_t *bdaddr);
660struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
661 bdaddr_t *bdaddr,
662 int state);
663void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
664 struct inquiry_entry *ie);
665u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
666 bool name_known);
667void hci_inquiry_cache_flush(struct hci_dev *hdev);
668
669/* ----- HCI Connections ----- */
670enum {
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
696static 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
703static 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
710static 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
733static 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
759static 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
777static 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
784static 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
804static 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
823static 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
843static 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
867static 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
887static 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
907int hci_disconnect(struct hci_conn *conn, __u8 reason);
908bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
909void hci_sco_setup(struct hci_conn *conn, __u8 status);
910
911struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
912 u8 role);
913int hci_conn_del(struct hci_conn *conn);
914void hci_conn_hash_flush(struct hci_dev *hdev);
915void hci_conn_check_pending(struct hci_dev *hdev);
916
917struct hci_chan *hci_chan_create(struct hci_conn *conn);
918void hci_chan_del(struct hci_chan *chan);
919void hci_chan_list_flush(struct hci_conn *conn);
920struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
921
922struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
923 u8 dst_type, u8 sec_level,
924 u16 conn_timeout);
925struct 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);
928struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
929 u8 sec_level, u8 auth_type);
930struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
931 __u16 setting);
932int hci_conn_check_link_mode(struct hci_conn *conn);
933int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
934int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
935 bool initiator);
936int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
937
938void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
939
940void 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
963static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
964{
965 get_device(&conn->dev);
966 return conn;
967}
968
969static inline void hci_conn_put(struct hci_conn *conn)
970{
971 put_device(&conn->dev);
972}
973
974static 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
982static 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 ----- */
1018static 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
1026static 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
1041static inline void *hci_get_drvdata(struct hci_dev *hdev)
1042{
1043 return dev_get_drvdata(&hdev->dev);
1044}
1045
1046static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1047{
1048 dev_set_drvdata(&hdev->dev, data);
1049}
1050
1051struct hci_dev *hci_dev_get(int index);
1052struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1053
1054struct hci_dev *hci_alloc_dev(void);
1055void hci_free_dev(struct hci_dev *hdev);
1056int hci_register_dev(struct hci_dev *hdev);
1057void hci_unregister_dev(struct hci_dev *hdev);
1058int hci_suspend_dev(struct hci_dev *hdev);
1059int hci_resume_dev(struct hci_dev *hdev);
1060int hci_reset_dev(struct hci_dev *hdev);
1061int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1062int 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, ...);
1065int hci_dev_open(__u16 dev);
1066int hci_dev_close(__u16 dev);
1067int hci_dev_do_close(struct hci_dev *hdev);
1068int hci_dev_reset(__u16 dev);
1069int hci_dev_reset_stat(__u16 dev);
1070int hci_dev_cmd(unsigned int cmd, void __user *arg);
1071int hci_get_dev_list(void __user *arg);
1072int hci_get_dev_info(void __user *arg);
1073int hci_get_conn_list(void __user *arg);
1074int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1075int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1076int hci_inquiry(void __user *arg);
1077
1078struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1079 bdaddr_t *bdaddr, u8 type);
1080struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1081 struct list_head *list, bdaddr_t *bdaddr,
1082 u8 type);
1083int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1084int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1085 u8 type, u8 *peer_irk, u8 *local_irk);
1086int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1087int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1088 u8 type);
1089void hci_bdaddr_list_clear(struct list_head *list);
1090
1091struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1092 bdaddr_t *addr, u8 addr_type);
1093struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1094 bdaddr_t *addr, u8 addr_type);
1095void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1096void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1097
1098struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1099 bdaddr_t *addr,
1100 u8 addr_type);
1101
1102void hci_uuids_clear(struct hci_dev *hdev);
1103
1104void hci_link_keys_clear(struct hci_dev *hdev);
1105struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1106struct 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);
1109struct 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);
1112struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1113 u8 addr_type, u8 role);
1114int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1115void hci_smp_ltks_clear(struct hci_dev *hdev);
1116int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1117
1118struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1119struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120 u8 addr_type);
1121struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1122 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1123void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1124void hci_smp_irks_clear(struct hci_dev *hdev);
1125
1126bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1127
1128void hci_remote_oob_data_clear(struct hci_dev *hdev);
1129struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1130 bdaddr_t *bdaddr, u8 bdaddr_type);
1131int 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);
1134int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1135 u8 bdaddr_type);
1136
1137void hci_adv_instances_clear(struct hci_dev *hdev);
1138struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1139struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1140int 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);
1144int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1145void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1146
1147void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1148
1149void hci_init_sysfs(struct hci_dev *hdev);
1150void hci_conn_init_sysfs(struct hci_conn *conn);
1151void hci_conn_add_sysfs(struct hci_conn *conn);
1152void 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
1221static 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
1238static 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 ----- */
1247struct 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
1260static 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
1275static 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
1290static 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
1311static 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
1333static 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
1345static 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
1358static 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
1395static 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
1406static 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
1418static 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
1427static 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
1448int hci_register_cb(struct hci_cb *hcb);
1449int hci_unregister_cb(struct hci_cb *hcb);
1450
1451struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1452 const void *param, u32 timeout);
1453struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1454 const void *param, u8 event, u32 timeout);
1455int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1456 const void *param);
1457
1458int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1459 const void *param);
1460void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1461void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1462
1463void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1464
1465struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1466 const void *param, u32 timeout);
1467
1468/* ----- HCI Sockets ----- */
1469void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1470void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1471 int flag, struct sock *skip_sk);
1472void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1473void 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
1477void 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
1484struct 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
1491struct 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
1499int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1500void 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
1523void mgmt_fill_version_info(void *ver);
1524int mgmt_new_settings(struct hci_dev *hdev);
1525void mgmt_index_added(struct hci_dev *hdev);
1526void mgmt_index_removed(struct hci_dev *hdev);
1527void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1528void mgmt_power_on(struct hci_dev *hdev, int err);
1529void __mgmt_power_off(struct hci_dev *hdev);
1530void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1531 bool persistent);
1532void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1533 u32 flags, u8 *name, u8 name_len);
1534void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535 u8 link_type, u8 addr_type, u8 reason,
1536 bool mgmt_connected);
1537void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1538 u8 link_type, u8 addr_type, u8 status);
1539void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1540 u8 addr_type, u8 status);
1541void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1542void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1543 u8 status);
1544void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1545 u8 status);
1546int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1547 u8 link_type, u8 addr_type, u32 value,
1548 u8 confirm_hint);
1549int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1550 u8 link_type, u8 addr_type, u8 status);
1551int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1552 u8 link_type, u8 addr_type, u8 status);
1553int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 link_type, u8 addr_type);
1555int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1556 u8 link_type, u8 addr_type, u8 status);
1557int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1558 u8 link_type, u8 addr_type, u8 status);
1559int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1560 u8 link_type, u8 addr_type, u32 passkey,
1561 u8 entered);
1562void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1563void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1564void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1565void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1566 u8 status);
1567void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1568void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1569void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1570void 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);
1573void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1574 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1575void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1576bool mgmt_powering_down(struct hci_dev *hdev);
1577void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1578void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1579void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1580 bool persistent);
1581void 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);
1584void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1585bool mgmt_get_connectable(struct hci_dev *hdev);
1586void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1587void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1588u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1589void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1590 u8 instance);
1591void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1592 u8 instance);
1593int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1594
1595u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1596 u16 to_multiplier);
1597void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1598 __u8 ltk[16], __u8 key_size);
1599
1600void 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 */
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/interrupt.h>
29#include <net/bluetooth/hci.h>
30
31/* HCI priority */
32#define HCI_PRIO_MAX 7
33
34/* HCI Core structures */
35struct inquiry_data {
36 bdaddr_t bdaddr;
37 __u8 pscan_rep_mode;
38 __u8 pscan_period_mode;
39 __u8 pscan_mode;
40 __u8 dev_class[3];
41 __le16 clock_offset;
42 __s8 rssi;
43 __u8 ssp_mode;
44};
45
46struct inquiry_entry {
47 struct list_head all; /* inq_cache.all */
48 struct list_head list; /* unknown or resolve */
49 enum {
50 NAME_NOT_KNOWN,
51 NAME_NEEDED,
52 NAME_PENDING,
53 NAME_KNOWN,
54 } name_state;
55 __u32 timestamp;
56 struct inquiry_data data;
57};
58
59struct discovery_state {
60 int type;
61 enum {
62 DISCOVERY_STOPPED,
63 DISCOVERY_STARTING,
64 DISCOVERY_FINDING,
65 DISCOVERY_RESOLVING,
66 DISCOVERY_STOPPING,
67 } state;
68 struct list_head all; /* All devices found during inquiry */
69 struct list_head unknown; /* Name state not known */
70 struct list_head resolve; /* Name needs to be resolved */
71 __u32 timestamp;
72};
73
74struct hci_conn_hash {
75 struct list_head list;
76 unsigned int acl_num;
77 unsigned int sco_num;
78 unsigned int le_num;
79};
80
81struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84};
85
86struct bt_uuid {
87 struct list_head list;
88 u8 uuid[16];
89 u8 svc_hint;
90};
91
92struct smp_ltk {
93 struct list_head list;
94 bdaddr_t bdaddr;
95 u8 bdaddr_type;
96 u8 authenticated;
97 u8 type;
98 u8 enc_size;
99 __le16 ediv;
100 u8 rand[8];
101 u8 val[16];
102} __packed;
103
104struct link_key {
105 struct list_head list;
106 bdaddr_t bdaddr;
107 u8 type;
108 u8 val[16];
109 u8 pin_len;
110};
111
112struct oob_data {
113 struct list_head list;
114 bdaddr_t bdaddr;
115 u8 hash[16];
116 u8 randomizer[16];
117};
118
119struct adv_entry {
120 struct list_head list;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123};
124
125struct le_scan_params {
126 u8 type;
127 u16 interval;
128 u16 window;
129 int timeout;
130};
131
132#define HCI_MAX_SHORT_NAME_LENGTH 10
133
134#define NUM_REASSEMBLY 4
135struct hci_dev {
136 struct list_head list;
137 struct mutex lock;
138
139 char name[8];
140 unsigned long flags;
141 __u16 id;
142 __u8 bus;
143 __u8 dev_type;
144 bdaddr_t bdaddr;
145 __u8 dev_name[HCI_MAX_NAME_LENGTH];
146 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
147 __u8 eir[HCI_MAX_EIR_LENGTH];
148 __u8 dev_class[3];
149 __u8 major_class;
150 __u8 minor_class;
151 __u8 features[8];
152 __u8 host_features[8];
153 __u8 commands[64];
154 __u8 hci_ver;
155 __u16 hci_rev;
156 __u8 lmp_ver;
157 __u16 manufacturer;
158 __u16 lmp_subver;
159 __u16 voice_setting;
160 __u8 io_capability;
161 __s8 inq_tx_power;
162 __u16 devid_source;
163 __u16 devid_vendor;
164 __u16 devid_product;
165 __u16 devid_version;
166
167 __u16 pkt_type;
168 __u16 esco_type;
169 __u16 link_policy;
170 __u16 link_mode;
171
172 __u32 idle_timeout;
173 __u16 sniff_min_interval;
174 __u16 sniff_max_interval;
175
176 __u8 amp_status;
177 __u32 amp_total_bw;
178 __u32 amp_max_bw;
179 __u32 amp_min_latency;
180 __u32 amp_max_pdu;
181 __u8 amp_type;
182 __u16 amp_pal_cap;
183 __u16 amp_assoc_size;
184 __u32 amp_max_flush_to;
185 __u32 amp_be_flush_to;
186
187 __u8 flow_ctl_mode;
188
189 unsigned int auto_accept_delay;
190
191 unsigned long quirks;
192
193 atomic_t cmd_cnt;
194 unsigned int acl_cnt;
195 unsigned int sco_cnt;
196 unsigned int le_cnt;
197
198 unsigned int acl_mtu;
199 unsigned int sco_mtu;
200 unsigned int le_mtu;
201 unsigned int acl_pkts;
202 unsigned int sco_pkts;
203 unsigned int le_pkts;
204
205 __u16 block_len;
206 __u16 block_mtu;
207 __u16 num_blocks;
208 __u16 block_cnt;
209
210 unsigned long acl_last_tx;
211 unsigned long sco_last_tx;
212 unsigned long le_last_tx;
213
214 struct workqueue_struct *workqueue;
215
216 struct work_struct power_on;
217 struct delayed_work power_off;
218
219 __u16 discov_timeout;
220 struct delayed_work discov_off;
221
222 struct delayed_work service_cache;
223
224 struct timer_list cmd_timer;
225
226 struct work_struct rx_work;
227 struct work_struct cmd_work;
228 struct work_struct tx_work;
229
230 struct sk_buff_head rx_q;
231 struct sk_buff_head raw_q;
232 struct sk_buff_head cmd_q;
233
234 struct sk_buff *sent_cmd;
235 struct sk_buff *reassembly[NUM_REASSEMBLY];
236
237 struct mutex req_lock;
238 wait_queue_head_t req_wait_q;
239 __u32 req_status;
240 __u32 req_result;
241
242 __u16 init_last_cmd;
243
244 struct list_head mgmt_pending;
245
246 struct discovery_state discovery;
247 struct hci_conn_hash conn_hash;
248 struct list_head blacklist;
249
250 struct list_head uuids;
251
252 struct list_head link_keys;
253
254 struct list_head long_term_keys;
255
256 struct list_head remote_oob_data;
257
258 struct hci_dev_stats stat;
259
260 struct sk_buff_head driver_init;
261
262 void *core_data;
263
264 atomic_t promisc;
265
266 struct dentry *debugfs;
267
268 struct device dev;
269
270 struct rfkill *rfkill;
271
272 unsigned long dev_flags;
273
274 struct delayed_work le_scan_disable;
275
276 struct work_struct le_scan;
277 struct le_scan_params le_scan_params;
278
279 int (*open)(struct hci_dev *hdev);
280 int (*close)(struct hci_dev *hdev);
281 int (*flush)(struct hci_dev *hdev);
282 int (*send)(struct sk_buff *skb);
283 void (*notify)(struct hci_dev *hdev, unsigned int evt);
284 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
285};
286
287struct hci_conn {
288 struct list_head list;
289
290 atomic_t refcnt;
291
292 bdaddr_t dst;
293 __u8 dst_type;
294 __u16 handle;
295 __u16 state;
296 __u8 mode;
297 __u8 type;
298 bool out;
299 __u8 attempt;
300 __u8 dev_class[3];
301 __u8 features[8];
302 __u16 interval;
303 __u16 pkt_type;
304 __u16 link_policy;
305 __u32 link_mode;
306 __u8 key_type;
307 __u8 auth_type;
308 __u8 sec_level;
309 __u8 pending_sec_level;
310 __u8 pin_length;
311 __u8 enc_key_size;
312 __u8 io_capability;
313 __u16 disc_timeout;
314 unsigned long flags;
315
316 __u8 remote_cap;
317 __u8 remote_auth;
318 bool flush_key;
319
320 unsigned int sent;
321
322 struct sk_buff_head data_q;
323 struct list_head chan_list;
324
325 struct delayed_work disc_work;
326 struct timer_list idle_timer;
327 struct timer_list auto_accept_timer;
328
329 struct device dev;
330 atomic_t devref;
331
332 struct hci_dev *hdev;
333 void *l2cap_data;
334 void *sco_data;
335 void *smp_conn;
336
337 struct hci_conn *link;
338
339 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
340 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
341 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
342};
343
344struct hci_chan {
345 struct list_head list;
346
347 struct hci_conn *conn;
348 struct sk_buff_head data_q;
349 unsigned int sent;
350};
351
352extern struct list_head hci_dev_list;
353extern struct list_head hci_cb_list;
354extern rwlock_t hci_dev_list_lock;
355extern rwlock_t hci_cb_list_lock;
356
357/* ----- HCI interface to upper protocols ----- */
358extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
359extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
360extern int l2cap_disconn_ind(struct hci_conn *hcon);
361extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
362extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
363extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
364
365extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
366extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
367extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
368extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
369
370/* ----- Inquiry cache ----- */
371#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
372#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
373
374static inline void discovery_init(struct hci_dev *hdev)
375{
376 hdev->discovery.state = DISCOVERY_STOPPED;
377 INIT_LIST_HEAD(&hdev->discovery.all);
378 INIT_LIST_HEAD(&hdev->discovery.unknown);
379 INIT_LIST_HEAD(&hdev->discovery.resolve);
380}
381
382bool hci_discovery_active(struct hci_dev *hdev);
383
384void hci_discovery_set_state(struct hci_dev *hdev, int state);
385
386static inline int inquiry_cache_empty(struct hci_dev *hdev)
387{
388 return list_empty(&hdev->discovery.all);
389}
390
391static inline long inquiry_cache_age(struct hci_dev *hdev)
392{
393 struct discovery_state *c = &hdev->discovery;
394 return jiffies - c->timestamp;
395}
396
397static inline long inquiry_entry_age(struct inquiry_entry *e)
398{
399 return jiffies - e->timestamp;
400}
401
402struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
403 bdaddr_t *bdaddr);
404struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
405 bdaddr_t *bdaddr);
406struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
407 bdaddr_t *bdaddr,
408 int state);
409void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
410 struct inquiry_entry *ie);
411bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
412 bool name_known, bool *ssp);
413
414/* ----- HCI Connections ----- */
415enum {
416 HCI_CONN_AUTH_PEND,
417 HCI_CONN_REAUTH_PEND,
418 HCI_CONN_ENCRYPT_PEND,
419 HCI_CONN_RSWITCH_PEND,
420 HCI_CONN_MODE_CHANGE_PEND,
421 HCI_CONN_SCO_SETUP_PEND,
422 HCI_CONN_LE_SMP_PEND,
423 HCI_CONN_MGMT_CONNECTED,
424 HCI_CONN_SSP_ENABLED,
425 HCI_CONN_POWER_SAVE,
426 HCI_CONN_REMOTE_OOB,
427};
428
429static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
430{
431 struct hci_dev *hdev = conn->hdev;
432 return (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
433 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
434}
435
436static inline void hci_conn_hash_init(struct hci_dev *hdev)
437{
438 struct hci_conn_hash *h = &hdev->conn_hash;
439 INIT_LIST_HEAD(&h->list);
440 h->acl_num = 0;
441 h->sco_num = 0;
442 h->le_num = 0;
443}
444
445static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
446{
447 struct hci_conn_hash *h = &hdev->conn_hash;
448 list_add_rcu(&c->list, &h->list);
449 switch (c->type) {
450 case ACL_LINK:
451 h->acl_num++;
452 break;
453 case LE_LINK:
454 h->le_num++;
455 break;
456 case SCO_LINK:
457 case ESCO_LINK:
458 h->sco_num++;
459 break;
460 }
461}
462
463static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
464{
465 struct hci_conn_hash *h = &hdev->conn_hash;
466
467 list_del_rcu(&c->list);
468 synchronize_rcu();
469
470 switch (c->type) {
471 case ACL_LINK:
472 h->acl_num--;
473 break;
474 case LE_LINK:
475 h->le_num--;
476 break;
477 case SCO_LINK:
478 case ESCO_LINK:
479 h->sco_num--;
480 break;
481 }
482}
483
484static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
485{
486 struct hci_conn_hash *h = &hdev->conn_hash;
487 switch (type) {
488 case ACL_LINK:
489 return h->acl_num;
490 case LE_LINK:
491 return h->le_num;
492 case SCO_LINK:
493 case ESCO_LINK:
494 return h->sco_num;
495 default:
496 return 0;
497 }
498}
499
500static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
501 __u16 handle)
502{
503 struct hci_conn_hash *h = &hdev->conn_hash;
504 struct hci_conn *c;
505
506 rcu_read_lock();
507
508 list_for_each_entry_rcu(c, &h->list, list) {
509 if (c->handle == handle) {
510 rcu_read_unlock();
511 return c;
512 }
513 }
514 rcu_read_unlock();
515
516 return NULL;
517}
518
519static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
520 __u8 type, bdaddr_t *ba)
521{
522 struct hci_conn_hash *h = &hdev->conn_hash;
523 struct hci_conn *c;
524
525 rcu_read_lock();
526
527 list_for_each_entry_rcu(c, &h->list, list) {
528 if (c->type == type && !bacmp(&c->dst, ba)) {
529 rcu_read_unlock();
530 return c;
531 }
532 }
533
534 rcu_read_unlock();
535
536 return NULL;
537}
538
539static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
540 __u8 type, __u16 state)
541{
542 struct hci_conn_hash *h = &hdev->conn_hash;
543 struct hci_conn *c;
544
545 rcu_read_lock();
546
547 list_for_each_entry_rcu(c, &h->list, list) {
548 if (c->type == type && c->state == state) {
549 rcu_read_unlock();
550 return c;
551 }
552 }
553
554 rcu_read_unlock();
555
556 return NULL;
557}
558
559void hci_acl_connect(struct hci_conn *conn);
560void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
561void hci_add_sco(struct hci_conn *conn, __u16 handle);
562void hci_setup_sync(struct hci_conn *conn, __u16 handle);
563void hci_sco_setup(struct hci_conn *conn, __u8 status);
564
565struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
566int hci_conn_del(struct hci_conn *conn);
567void hci_conn_hash_flush(struct hci_dev *hdev);
568void hci_conn_check_pending(struct hci_dev *hdev);
569
570struct hci_chan *hci_chan_create(struct hci_conn *conn);
571int hci_chan_del(struct hci_chan *chan);
572void hci_chan_list_flush(struct hci_conn *conn);
573
574struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
575 __u8 dst_type, __u8 sec_level, __u8 auth_type);
576int hci_conn_check_link_mode(struct hci_conn *conn);
577int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
578int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
579int hci_conn_change_link_key(struct hci_conn *conn);
580int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
581
582void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
583
584void hci_conn_hold_device(struct hci_conn *conn);
585void hci_conn_put_device(struct hci_conn *conn);
586
587static inline void hci_conn_hold(struct hci_conn *conn)
588{
589 atomic_inc(&conn->refcnt);
590 cancel_delayed_work(&conn->disc_work);
591}
592
593static inline void hci_conn_put(struct hci_conn *conn)
594{
595 if (atomic_dec_and_test(&conn->refcnt)) {
596 unsigned long timeo;
597 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
598 del_timer(&conn->idle_timer);
599 if (conn->state == BT_CONNECTED) {
600 timeo = msecs_to_jiffies(conn->disc_timeout);
601 if (!conn->out)
602 timeo *= 2;
603 } else {
604 timeo = msecs_to_jiffies(10);
605 }
606 } else {
607 timeo = msecs_to_jiffies(10);
608 }
609 cancel_delayed_work(&conn->disc_work);
610 queue_delayed_work(conn->hdev->workqueue,
611 &conn->disc_work, timeo);
612 }
613}
614
615/* ----- HCI Devices ----- */
616static inline void hci_dev_put(struct hci_dev *d)
617{
618 put_device(&d->dev);
619}
620
621static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
622{
623 get_device(&d->dev);
624 return d;
625}
626
627#define hci_dev_lock(d) mutex_lock(&d->lock)
628#define hci_dev_unlock(d) mutex_unlock(&d->lock)
629
630#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
631#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
632
633static inline void *hci_get_drvdata(struct hci_dev *hdev)
634{
635 return dev_get_drvdata(&hdev->dev);
636}
637
638static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
639{
640 dev_set_drvdata(&hdev->dev, data);
641}
642
643struct hci_dev *hci_dev_get(int index);
644struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
645
646struct hci_dev *hci_alloc_dev(void);
647void hci_free_dev(struct hci_dev *hdev);
648int hci_register_dev(struct hci_dev *hdev);
649void hci_unregister_dev(struct hci_dev *hdev);
650int hci_suspend_dev(struct hci_dev *hdev);
651int hci_resume_dev(struct hci_dev *hdev);
652int hci_dev_open(__u16 dev);
653int hci_dev_close(__u16 dev);
654int hci_dev_reset(__u16 dev);
655int hci_dev_reset_stat(__u16 dev);
656int hci_dev_cmd(unsigned int cmd, void __user *arg);
657int hci_get_dev_list(void __user *arg);
658int hci_get_dev_info(void __user *arg);
659int hci_get_conn_list(void __user *arg);
660int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
661int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
662int hci_inquiry(void __user *arg);
663
664struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
665int hci_blacklist_clear(struct hci_dev *hdev);
666int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
667int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
668
669int hci_uuids_clear(struct hci_dev *hdev);
670
671int hci_link_keys_clear(struct hci_dev *hdev);
672struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
673int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
674 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
675struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
676int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
677 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
678 __le16 ediv, u8 rand[8]);
679struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
680 u8 addr_type);
681int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
682int hci_smp_ltks_clear(struct hci_dev *hdev);
683int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
684
685int hci_remote_oob_data_clear(struct hci_dev *hdev);
686struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
687 bdaddr_t *bdaddr);
688int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
689 u8 *randomizer);
690int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
691
692void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
693
694int hci_recv_frame(struct sk_buff *skb);
695int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
696int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
697
698void hci_init_sysfs(struct hci_dev *hdev);
699int hci_add_sysfs(struct hci_dev *hdev);
700void hci_del_sysfs(struct hci_dev *hdev);
701void hci_conn_init_sysfs(struct hci_conn *conn);
702void hci_conn_add_sysfs(struct hci_conn *conn);
703void hci_conn_del_sysfs(struct hci_conn *conn);
704
705#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
706
707/* ----- LMP capabilities ----- */
708#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
709#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
710#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
711#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
712#define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
713#define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
714#define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
715#define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
716#define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
717
718/* ----- Extended LMP capabilities ----- */
719#define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
720
721/* ----- HCI protocols ----- */
722static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
723 __u8 type)
724{
725 switch (type) {
726 case ACL_LINK:
727 return l2cap_connect_ind(hdev, bdaddr);
728
729 case SCO_LINK:
730 case ESCO_LINK:
731 return sco_connect_ind(hdev, bdaddr);
732
733 default:
734 BT_ERR("unknown link type %d", type);
735 return -EINVAL;
736 }
737}
738
739static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
740{
741 switch (conn->type) {
742 case ACL_LINK:
743 case LE_LINK:
744 l2cap_connect_cfm(conn, status);
745 break;
746
747 case SCO_LINK:
748 case ESCO_LINK:
749 sco_connect_cfm(conn, status);
750 break;
751
752 default:
753 BT_ERR("unknown link type %d", conn->type);
754 break;
755 }
756
757 if (conn->connect_cfm_cb)
758 conn->connect_cfm_cb(conn, status);
759}
760
761static inline int hci_proto_disconn_ind(struct hci_conn *conn)
762{
763 if (conn->type != ACL_LINK && conn->type != LE_LINK)
764 return HCI_ERROR_REMOTE_USER_TERM;
765
766 return l2cap_disconn_ind(conn);
767}
768
769static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
770{
771 switch (conn->type) {
772 case ACL_LINK:
773 case LE_LINK:
774 l2cap_disconn_cfm(conn, reason);
775 break;
776
777 case SCO_LINK:
778 case ESCO_LINK:
779 sco_disconn_cfm(conn, reason);
780 break;
781
782 default:
783 BT_ERR("unknown link type %d", conn->type);
784 break;
785 }
786
787 if (conn->disconn_cfm_cb)
788 conn->disconn_cfm_cb(conn, reason);
789}
790
791static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
792{
793 __u8 encrypt;
794
795 if (conn->type != ACL_LINK && conn->type != LE_LINK)
796 return;
797
798 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
799 return;
800
801 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
802 l2cap_security_cfm(conn, status, encrypt);
803
804 if (conn->security_cfm_cb)
805 conn->security_cfm_cb(conn, status);
806}
807
808static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
809 __u8 encrypt)
810{
811 if (conn->type != ACL_LINK && conn->type != LE_LINK)
812 return;
813
814 l2cap_security_cfm(conn, status, encrypt);
815
816 if (conn->security_cfm_cb)
817 conn->security_cfm_cb(conn, status);
818}
819
820/* ----- HCI callbacks ----- */
821struct hci_cb {
822 struct list_head list;
823
824 char *name;
825
826 void (*security_cfm) (struct hci_conn *conn, __u8 status,
827 __u8 encrypt);
828 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
829 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
830};
831
832static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
833{
834 struct list_head *p;
835 __u8 encrypt;
836
837 hci_proto_auth_cfm(conn, status);
838
839 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
840 return;
841
842 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
843
844 read_lock(&hci_cb_list_lock);
845 list_for_each(p, &hci_cb_list) {
846 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
847 if (cb->security_cfm)
848 cb->security_cfm(conn, status, encrypt);
849 }
850 read_unlock(&hci_cb_list_lock);
851}
852
853static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
854 __u8 encrypt)
855{
856 struct list_head *p;
857
858 if (conn->sec_level == BT_SECURITY_SDP)
859 conn->sec_level = BT_SECURITY_LOW;
860
861 if (conn->pending_sec_level > conn->sec_level)
862 conn->sec_level = conn->pending_sec_level;
863
864 hci_proto_encrypt_cfm(conn, status, encrypt);
865
866 read_lock(&hci_cb_list_lock);
867 list_for_each(p, &hci_cb_list) {
868 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
869 if (cb->security_cfm)
870 cb->security_cfm(conn, status, encrypt);
871 }
872 read_unlock(&hci_cb_list_lock);
873}
874
875static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
876{
877 struct list_head *p;
878
879 read_lock(&hci_cb_list_lock);
880 list_for_each(p, &hci_cb_list) {
881 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
882 if (cb->key_change_cfm)
883 cb->key_change_cfm(conn, status);
884 }
885 read_unlock(&hci_cb_list_lock);
886}
887
888static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
889 __u8 role)
890{
891 struct list_head *p;
892
893 read_lock(&hci_cb_list_lock);
894 list_for_each(p, &hci_cb_list) {
895 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
896 if (cb->role_switch_cfm)
897 cb->role_switch_cfm(conn, status, role);
898 }
899 read_unlock(&hci_cb_list_lock);
900}
901
902static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
903{
904 size_t parsed = 0;
905
906 if (data_len < 2)
907 return false;
908
909 while (parsed < data_len - 1) {
910 u8 field_len = data[0];
911
912 if (field_len == 0)
913 break;
914
915 parsed += field_len + 1;
916
917 if (parsed > data_len)
918 break;
919
920 if (data[1] == type)
921 return true;
922
923 data += field_len + 1;
924 }
925
926 return false;
927}
928
929static inline size_t eir_get_length(u8 *eir, size_t eir_len)
930{
931 size_t parsed = 0;
932
933 while (parsed < eir_len) {
934 u8 field_len = eir[0];
935
936 if (field_len == 0)
937 return parsed;
938
939 parsed += field_len + 1;
940 eir += field_len + 1;
941 }
942
943 return eir_len;
944}
945
946static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
947 u8 data_len)
948{
949 eir[eir_len++] = sizeof(type) + data_len;
950 eir[eir_len++] = type;
951 memcpy(&eir[eir_len], data, data_len);
952 eir_len += data_len;
953
954 return eir_len;
955}
956
957int hci_register_cb(struct hci_cb *hcb);
958int hci_unregister_cb(struct hci_cb *hcb);
959
960int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
961void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
962void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
963
964void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
965
966/* ----- HCI Sockets ----- */
967void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
968void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
969void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
970
971void hci_sock_dev_event(struct hci_dev *hdev, int event);
972
973/* Management interface */
974#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
975#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
976 BIT(BDADDR_LE_RANDOM))
977#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
978 BIT(BDADDR_LE_PUBLIC) | \
979 BIT(BDADDR_LE_RANDOM))
980
981int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
982int mgmt_index_added(struct hci_dev *hdev);
983int mgmt_index_removed(struct hci_dev *hdev);
984int mgmt_powered(struct hci_dev *hdev, u8 powered);
985int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
986int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
987int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
988int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
989 bool persistent);
990int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
991 u8 addr_type, u32 flags, u8 *name, u8 name_len,
992 u8 *dev_class);
993int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
994 u8 link_type, u8 addr_type);
995int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
996 u8 link_type, u8 addr_type, u8 status);
997int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
998 u8 addr_type, u8 status);
999int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1000int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1001 u8 status);
1002int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1003 u8 status);
1004int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1005 u8 link_type, u8 addr_type, __le32 value,
1006 u8 confirm_hint);
1007int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1008 u8 link_type, u8 addr_type, u8 status);
1009int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1010 u8 link_type, u8 addr_type, u8 status);
1011int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1012 u8 link_type, u8 addr_type);
1013int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1014 u8 link_type, u8 addr_type, u8 status);
1015int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1016 u8 link_type, u8 addr_type, u8 status);
1017int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1018 u8 addr_type, u8 status);
1019int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1020int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1021int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1022 u8 status);
1023int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1024int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1025 u8 *randomizer, u8 status);
1026int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1027int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1028 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1029 u8 ssp, u8 *eir, u16 eir_len);
1030int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1031 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1032int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1033int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1034int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1035int mgmt_interleaved_discovery(struct hci_dev *hdev);
1036int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1037int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1038
1039int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1040
1041/* HCI info for socket */
1042#define hci_pi(sk) ((struct hci_pinfo *) sk)
1043
1044struct hci_pinfo {
1045 struct bt_sock bt;
1046 struct hci_dev *hdev;
1047 struct hci_filter filter;
1048 __u32 cmsg_mask;
1049 unsigned short channel;
1050};
1051
1052/* HCI security filter */
1053#define HCI_SFLT_MAX_OGF 5
1054
1055struct hci_sec_filter {
1056 __u32 type_mask;
1057 __u32 event_mask[2];
1058 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1059};
1060
1061/* ----- HCI requests ----- */
1062#define HCI_REQ_DONE 0
1063#define HCI_REQ_PEND 1
1064#define HCI_REQ_CANCELED 2
1065
1066#define hci_req_lock(d) mutex_lock(&d->req_lock)
1067#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1068
1069void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1070
1071void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1072 u16 latency, u16 to_multiplier);
1073void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1074 __u8 ltk[16]);
1075int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1076int hci_cancel_inquiry(struct hci_dev *hdev);
1077int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1078 int timeout);
1079int hci_cancel_le_scan(struct hci_dev *hdev);
1080
1081u8 bdaddr_to_le(u8 bdaddr_type);
1082
1083#endif /* __HCI_CORE_H */