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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 <net/bluetooth/hci.h>
29
30/* HCI priority */
31#define HCI_PRIO_MAX 7
32
33/* HCI Core structures */
34struct inquiry_data {
35 bdaddr_t bdaddr;
36 __u8 pscan_rep_mode;
37 __u8 pscan_period_mode;
38 __u8 pscan_mode;
39 __u8 dev_class[3];
40 __le16 clock_offset;
41 __s8 rssi;
42 __u8 ssp_mode;
43};
44
45struct inquiry_entry {
46 struct list_head all; /* inq_cache.all */
47 struct list_head list; /* unknown or resolve */
48 enum {
49 NAME_NOT_KNOWN,
50 NAME_NEEDED,
51 NAME_PENDING,
52 NAME_KNOWN,
53 } name_state;
54 __u32 timestamp;
55 struct inquiry_data data;
56};
57
58struct discovery_state {
59 int type;
60 enum {
61 DISCOVERY_STOPPED,
62 DISCOVERY_STARTING,
63 DISCOVERY_FINDING,
64 DISCOVERY_RESOLVING,
65 DISCOVERY_STOPPING,
66 } state;
67 struct list_head all; /* All devices found during inquiry */
68 struct list_head unknown; /* Name state not known */
69 struct list_head resolve; /* Name needs to be resolved */
70 __u32 timestamp;
71};
72
73struct hci_conn_hash {
74 struct list_head list;
75 unsigned int acl_num;
76 unsigned int amp_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 u8 bdaddr_type;
85};
86
87struct bt_uuid {
88 struct list_head list;
89 u8 uuid[16];
90 u8 size;
91 u8 svc_hint;
92};
93
94struct smp_csrk {
95 bdaddr_t bdaddr;
96 u8 bdaddr_type;
97 u8 master;
98 u8 val[16];
99};
100
101struct smp_ltk {
102 struct list_head list;
103 bdaddr_t bdaddr;
104 u8 bdaddr_type;
105 u8 authenticated;
106 u8 type;
107 u8 enc_size;
108 __le16 ediv;
109 __le64 rand;
110 u8 val[16];
111};
112
113struct smp_irk {
114 struct list_head list;
115 bdaddr_t rpa;
116 bdaddr_t bdaddr;
117 u8 addr_type;
118 u8 val[16];
119};
120
121struct link_key {
122 struct list_head list;
123 bdaddr_t bdaddr;
124 u8 type;
125 u8 val[HCI_LINK_KEY_SIZE];
126 u8 pin_len;
127};
128
129struct oob_data {
130 struct list_head list;
131 bdaddr_t bdaddr;
132 u8 hash192[16];
133 u8 randomizer192[16];
134 u8 hash256[16];
135 u8 randomizer256[16];
136};
137
138#define HCI_MAX_SHORT_NAME_LENGTH 10
139
140/* Default LE RPA expiry time, 15 minutes */
141#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
142
143struct amp_assoc {
144 __u16 len;
145 __u16 offset;
146 __u16 rem_len;
147 __u16 len_so_far;
148 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
149};
150
151#define HCI_MAX_PAGES 3
152
153#define NUM_REASSEMBLY 4
154struct hci_dev {
155 struct list_head list;
156 struct mutex lock;
157
158 char name[8];
159 unsigned long flags;
160 __u16 id;
161 __u8 bus;
162 __u8 dev_type;
163 bdaddr_t bdaddr;
164 bdaddr_t random_addr;
165 bdaddr_t static_addr;
166 __u8 adv_addr_type;
167 __u8 dev_name[HCI_MAX_NAME_LENGTH];
168 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
169 __u8 eir[HCI_MAX_EIR_LENGTH];
170 __u8 dev_class[3];
171 __u8 major_class;
172 __u8 minor_class;
173 __u8 max_page;
174 __u8 features[HCI_MAX_PAGES][8];
175 __u8 le_features[8];
176 __u8 le_white_list_size;
177 __u8 le_states[8];
178 __u8 commands[64];
179 __u8 hci_ver;
180 __u16 hci_rev;
181 __u8 lmp_ver;
182 __u16 manufacturer;
183 __u16 lmp_subver;
184 __u16 voice_setting;
185 __u8 num_iac;
186 __u8 io_capability;
187 __s8 inq_tx_power;
188 __u16 page_scan_interval;
189 __u16 page_scan_window;
190 __u8 page_scan_type;
191 __u8 le_adv_channel_map;
192 __u8 le_scan_type;
193 __u16 le_scan_interval;
194 __u16 le_scan_window;
195 __u16 le_conn_min_interval;
196 __u16 le_conn_max_interval;
197 __u8 ssp_debug_mode;
198
199 __u16 devid_source;
200 __u16 devid_vendor;
201 __u16 devid_product;
202 __u16 devid_version;
203
204 __u16 pkt_type;
205 __u16 esco_type;
206 __u16 link_policy;
207 __u16 link_mode;
208
209 __u32 idle_timeout;
210 __u16 sniff_min_interval;
211 __u16 sniff_max_interval;
212
213 __u8 amp_status;
214 __u32 amp_total_bw;
215 __u32 amp_max_bw;
216 __u32 amp_min_latency;
217 __u32 amp_max_pdu;
218 __u8 amp_type;
219 __u16 amp_pal_cap;
220 __u16 amp_assoc_size;
221 __u32 amp_max_flush_to;
222 __u32 amp_be_flush_to;
223
224 struct amp_assoc loc_assoc;
225
226 __u8 flow_ctl_mode;
227
228 unsigned int auto_accept_delay;
229
230 unsigned long quirks;
231
232 atomic_t cmd_cnt;
233 unsigned int acl_cnt;
234 unsigned int sco_cnt;
235 unsigned int le_cnt;
236
237 unsigned int acl_mtu;
238 unsigned int sco_mtu;
239 unsigned int le_mtu;
240 unsigned int acl_pkts;
241 unsigned int sco_pkts;
242 unsigned int le_pkts;
243
244 __u16 block_len;
245 __u16 block_mtu;
246 __u16 num_blocks;
247 __u16 block_cnt;
248
249 unsigned long acl_last_tx;
250 unsigned long sco_last_tx;
251 unsigned long le_last_tx;
252
253 struct workqueue_struct *workqueue;
254 struct workqueue_struct *req_workqueue;
255
256 struct work_struct power_on;
257 struct delayed_work power_off;
258
259 __u16 discov_timeout;
260 struct delayed_work discov_off;
261
262 struct delayed_work service_cache;
263
264 struct timer_list cmd_timer;
265
266 struct work_struct rx_work;
267 struct work_struct cmd_work;
268 struct work_struct tx_work;
269
270 struct sk_buff_head rx_q;
271 struct sk_buff_head raw_q;
272 struct sk_buff_head cmd_q;
273
274 struct sk_buff *recv_evt;
275 struct sk_buff *sent_cmd;
276 struct sk_buff *reassembly[NUM_REASSEMBLY];
277
278 struct mutex req_lock;
279 wait_queue_head_t req_wait_q;
280 __u32 req_status;
281 __u32 req_result;
282
283 struct crypto_blkcipher *tfm_aes;
284
285 struct discovery_state discovery;
286 struct hci_conn_hash conn_hash;
287
288 struct list_head mgmt_pending;
289 struct list_head blacklist;
290 struct list_head uuids;
291 struct list_head link_keys;
292 struct list_head long_term_keys;
293 struct list_head identity_resolving_keys;
294 struct list_head remote_oob_data;
295 struct list_head le_white_list;
296 struct list_head le_conn_params;
297 struct list_head pend_le_conns;
298
299 struct hci_dev_stats stat;
300
301 atomic_t promisc;
302
303 struct dentry *debugfs;
304
305 struct device dev;
306
307 struct rfkill *rfkill;
308
309 unsigned long dev_flags;
310
311 struct delayed_work le_scan_disable;
312
313 __s8 adv_tx_power;
314 __u8 adv_data[HCI_MAX_AD_LENGTH];
315 __u8 adv_data_len;
316 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
317 __u8 scan_rsp_data_len;
318
319 __u8 irk[16];
320 __u32 rpa_timeout;
321 struct delayed_work rpa_expired;
322 bdaddr_t rpa;
323
324 int (*open)(struct hci_dev *hdev);
325 int (*close)(struct hci_dev *hdev);
326 int (*flush)(struct hci_dev *hdev);
327 int (*setup)(struct hci_dev *hdev);
328 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
329 void (*notify)(struct hci_dev *hdev, unsigned int evt);
330};
331
332#define HCI_PHY_HANDLE(handle) (handle & 0xff)
333
334struct hci_conn {
335 struct list_head list;
336
337 atomic_t refcnt;
338
339 bdaddr_t dst;
340 __u8 dst_type;
341 bdaddr_t src;
342 __u8 src_type;
343 bdaddr_t init_addr;
344 __u8 init_addr_type;
345 bdaddr_t resp_addr;
346 __u8 resp_addr_type;
347 __u16 handle;
348 __u16 state;
349 __u8 mode;
350 __u8 type;
351 bool out;
352 __u8 attempt;
353 __u8 dev_class[3];
354 __u8 features[HCI_MAX_PAGES][8];
355 __u16 pkt_type;
356 __u16 link_policy;
357 __u32 link_mode;
358 __u8 key_type;
359 __u8 auth_type;
360 __u8 sec_level;
361 __u8 pending_sec_level;
362 __u8 pin_length;
363 __u8 enc_key_size;
364 __u8 io_capability;
365 __u32 passkey_notify;
366 __u8 passkey_entered;
367 __u16 disc_timeout;
368 __u16 setting;
369 __u16 le_conn_min_interval;
370 __u16 le_conn_max_interval;
371 unsigned long flags;
372
373 __u8 remote_cap;
374 __u8 remote_auth;
375 __u8 remote_id;
376 bool flush_key;
377
378 unsigned int sent;
379
380 struct sk_buff_head data_q;
381 struct list_head chan_list;
382
383 struct delayed_work disc_work;
384 struct delayed_work auto_accept_work;
385 struct delayed_work idle_work;
386 struct delayed_work le_conn_timeout;
387
388 struct device dev;
389
390 struct hci_dev *hdev;
391 void *l2cap_data;
392 void *sco_data;
393 void *smp_conn;
394 struct amp_mgr *amp_mgr;
395
396 struct hci_conn *link;
397
398 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
399 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
400 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
401};
402
403struct hci_chan {
404 struct list_head list;
405 __u16 handle;
406 struct hci_conn *conn;
407 struct sk_buff_head data_q;
408 unsigned int sent;
409 __u8 state;
410};
411
412struct hci_conn_params {
413 struct list_head list;
414
415 bdaddr_t addr;
416 u8 addr_type;
417
418 u16 conn_min_interval;
419 u16 conn_max_interval;
420
421 enum {
422 HCI_AUTO_CONN_DISABLED,
423 HCI_AUTO_CONN_ALWAYS,
424 HCI_AUTO_CONN_LINK_LOSS,
425 } auto_connect;
426};
427
428extern struct list_head hci_dev_list;
429extern struct list_head hci_cb_list;
430extern rwlock_t hci_dev_list_lock;
431extern rwlock_t hci_cb_list_lock;
432
433/* ----- HCI interface to upper protocols ----- */
434int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
435void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
436int l2cap_disconn_ind(struct hci_conn *hcon);
437void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
438int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
439int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
440
441int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
442void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
443void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
444int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
445
446/* ----- Inquiry cache ----- */
447#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
448#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
449
450static inline void discovery_init(struct hci_dev *hdev)
451{
452 hdev->discovery.state = DISCOVERY_STOPPED;
453 INIT_LIST_HEAD(&hdev->discovery.all);
454 INIT_LIST_HEAD(&hdev->discovery.unknown);
455 INIT_LIST_HEAD(&hdev->discovery.resolve);
456}
457
458bool hci_discovery_active(struct hci_dev *hdev);
459
460void hci_discovery_set_state(struct hci_dev *hdev, int state);
461
462static inline int inquiry_cache_empty(struct hci_dev *hdev)
463{
464 return list_empty(&hdev->discovery.all);
465}
466
467static inline long inquiry_cache_age(struct hci_dev *hdev)
468{
469 struct discovery_state *c = &hdev->discovery;
470 return jiffies - c->timestamp;
471}
472
473static inline long inquiry_entry_age(struct inquiry_entry *e)
474{
475 return jiffies - e->timestamp;
476}
477
478struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
479 bdaddr_t *bdaddr);
480struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
481 bdaddr_t *bdaddr);
482struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
483 bdaddr_t *bdaddr,
484 int state);
485void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
486 struct inquiry_entry *ie);
487bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
488 bool name_known, bool *ssp);
489void hci_inquiry_cache_flush(struct hci_dev *hdev);
490
491/* ----- HCI Connections ----- */
492enum {
493 HCI_CONN_AUTH_PEND,
494 HCI_CONN_REAUTH_PEND,
495 HCI_CONN_ENCRYPT_PEND,
496 HCI_CONN_RSWITCH_PEND,
497 HCI_CONN_MODE_CHANGE_PEND,
498 HCI_CONN_SCO_SETUP_PEND,
499 HCI_CONN_LE_SMP_PEND,
500 HCI_CONN_MGMT_CONNECTED,
501 HCI_CONN_SSP_ENABLED,
502 HCI_CONN_SC_ENABLED,
503 HCI_CONN_AES_CCM,
504 HCI_CONN_POWER_SAVE,
505 HCI_CONN_REMOTE_OOB,
506 HCI_CONN_6LOWPAN,
507};
508
509static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
510{
511 struct hci_dev *hdev = conn->hdev;
512 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
513 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
514}
515
516static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
517{
518 struct hci_dev *hdev = conn->hdev;
519 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
520 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
521}
522
523static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
524{
525 struct hci_conn_hash *h = &hdev->conn_hash;
526 list_add_rcu(&c->list, &h->list);
527 switch (c->type) {
528 case ACL_LINK:
529 h->acl_num++;
530 break;
531 case AMP_LINK:
532 h->amp_num++;
533 break;
534 case LE_LINK:
535 h->le_num++;
536 break;
537 case SCO_LINK:
538 case ESCO_LINK:
539 h->sco_num++;
540 break;
541 }
542}
543
544static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
545{
546 struct hci_conn_hash *h = &hdev->conn_hash;
547
548 list_del_rcu(&c->list);
549 synchronize_rcu();
550
551 switch (c->type) {
552 case ACL_LINK:
553 h->acl_num--;
554 break;
555 case AMP_LINK:
556 h->amp_num--;
557 break;
558 case LE_LINK:
559 h->le_num--;
560 break;
561 case SCO_LINK:
562 case ESCO_LINK:
563 h->sco_num--;
564 break;
565 }
566}
567
568static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
569{
570 struct hci_conn_hash *h = &hdev->conn_hash;
571 switch (type) {
572 case ACL_LINK:
573 return h->acl_num;
574 case AMP_LINK:
575 return h->amp_num;
576 case LE_LINK:
577 return h->le_num;
578 case SCO_LINK:
579 case ESCO_LINK:
580 return h->sco_num;
581 default:
582 return 0;
583 }
584}
585
586static inline unsigned int hci_conn_count(struct hci_dev *hdev)
587{
588 struct hci_conn_hash *c = &hdev->conn_hash;
589
590 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
591}
592
593static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
594 __u16 handle)
595{
596 struct hci_conn_hash *h = &hdev->conn_hash;
597 struct hci_conn *c;
598
599 rcu_read_lock();
600
601 list_for_each_entry_rcu(c, &h->list, list) {
602 if (c->handle == handle) {
603 rcu_read_unlock();
604 return c;
605 }
606 }
607 rcu_read_unlock();
608
609 return NULL;
610}
611
612static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
613 __u8 type, bdaddr_t *ba)
614{
615 struct hci_conn_hash *h = &hdev->conn_hash;
616 struct hci_conn *c;
617
618 rcu_read_lock();
619
620 list_for_each_entry_rcu(c, &h->list, list) {
621 if (c->type == type && !bacmp(&c->dst, ba)) {
622 rcu_read_unlock();
623 return c;
624 }
625 }
626
627 rcu_read_unlock();
628
629 return NULL;
630}
631
632static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
633 __u8 type, __u16 state)
634{
635 struct hci_conn_hash *h = &hdev->conn_hash;
636 struct hci_conn *c;
637
638 rcu_read_lock();
639
640 list_for_each_entry_rcu(c, &h->list, list) {
641 if (c->type == type && c->state == state) {
642 rcu_read_unlock();
643 return c;
644 }
645 }
646
647 rcu_read_unlock();
648
649 return NULL;
650}
651
652void hci_disconnect(struct hci_conn *conn, __u8 reason);
653bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
654void hci_sco_setup(struct hci_conn *conn, __u8 status);
655
656struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
657int hci_conn_del(struct hci_conn *conn);
658void hci_conn_hash_flush(struct hci_dev *hdev);
659void hci_conn_check_pending(struct hci_dev *hdev);
660
661struct hci_chan *hci_chan_create(struct hci_conn *conn);
662void hci_chan_del(struct hci_chan *chan);
663void hci_chan_list_flush(struct hci_conn *conn);
664struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
665
666struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
667 u8 dst_type, u8 sec_level, u8 auth_type);
668struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
669 u8 sec_level, u8 auth_type);
670struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
671 __u16 setting);
672int hci_conn_check_link_mode(struct hci_conn *conn);
673int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
674int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
675int hci_conn_change_link_key(struct hci_conn *conn);
676int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
677
678void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
679
680void hci_le_conn_failed(struct hci_conn *conn, u8 status);
681
682/*
683 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
684 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
685 * working or anything else. They just guarantee that the object is available
686 * and can be dereferenced. So you can use its locks, local variables and any
687 * other constant data.
688 * Before accessing runtime data, you _must_ lock the object and then check that
689 * it is still running. As soon as you release the locks, the connection might
690 * get dropped, though.
691 *
692 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
693 * how long the underlying connection is held. So every channel that runs on the
694 * hci_conn object calls this to prevent the connection from disappearing. As
695 * long as you hold a device, you must also guarantee that you have a valid
696 * reference to the device via hci_conn_get() (or the initial reference from
697 * hci_conn_add()).
698 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
699 * break because nobody cares for that. But this means, we cannot use
700 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
701 */
702
703static inline void hci_conn_get(struct hci_conn *conn)
704{
705 get_device(&conn->dev);
706}
707
708static inline void hci_conn_put(struct hci_conn *conn)
709{
710 put_device(&conn->dev);
711}
712
713static inline void hci_conn_hold(struct hci_conn *conn)
714{
715 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
716
717 atomic_inc(&conn->refcnt);
718 cancel_delayed_work(&conn->disc_work);
719}
720
721static inline void hci_conn_drop(struct hci_conn *conn)
722{
723 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
724
725 if (atomic_dec_and_test(&conn->refcnt)) {
726 unsigned long timeo;
727
728 switch (conn->type) {
729 case ACL_LINK:
730 case LE_LINK:
731 cancel_delayed_work(&conn->idle_work);
732 if (conn->state == BT_CONNECTED) {
733 timeo = conn->disc_timeout;
734 if (!conn->out)
735 timeo *= 2;
736 } else {
737 timeo = msecs_to_jiffies(10);
738 }
739 break;
740
741 case AMP_LINK:
742 timeo = conn->disc_timeout;
743 break;
744
745 default:
746 timeo = msecs_to_jiffies(10);
747 break;
748 }
749
750 cancel_delayed_work(&conn->disc_work);
751 queue_delayed_work(conn->hdev->workqueue,
752 &conn->disc_work, timeo);
753 }
754}
755
756/* ----- HCI Devices ----- */
757static inline void hci_dev_put(struct hci_dev *d)
758{
759 BT_DBG("%s orig refcnt %d", d->name,
760 atomic_read(&d->dev.kobj.kref.refcount));
761
762 put_device(&d->dev);
763}
764
765static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
766{
767 BT_DBG("%s orig refcnt %d", d->name,
768 atomic_read(&d->dev.kobj.kref.refcount));
769
770 get_device(&d->dev);
771 return d;
772}
773
774#define hci_dev_lock(d) mutex_lock(&d->lock)
775#define hci_dev_unlock(d) mutex_unlock(&d->lock)
776
777#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
778#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
779
780static inline void *hci_get_drvdata(struct hci_dev *hdev)
781{
782 return dev_get_drvdata(&hdev->dev);
783}
784
785static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
786{
787 dev_set_drvdata(&hdev->dev, data);
788}
789
790struct hci_dev *hci_dev_get(int index);
791struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
792
793struct hci_dev *hci_alloc_dev(void);
794void hci_free_dev(struct hci_dev *hdev);
795int hci_register_dev(struct hci_dev *hdev);
796void hci_unregister_dev(struct hci_dev *hdev);
797int hci_suspend_dev(struct hci_dev *hdev);
798int hci_resume_dev(struct hci_dev *hdev);
799int hci_dev_open(__u16 dev);
800int hci_dev_close(__u16 dev);
801int hci_dev_reset(__u16 dev);
802int hci_dev_reset_stat(__u16 dev);
803int hci_dev_cmd(unsigned int cmd, void __user *arg);
804int hci_get_dev_list(void __user *arg);
805int hci_get_dev_info(void __user *arg);
806int hci_get_conn_list(void __user *arg);
807int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
808int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
809int hci_inquiry(void __user *arg);
810
811struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
812 bdaddr_t *bdaddr, u8 type);
813int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
814int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
815
816struct bdaddr_list *hci_white_list_lookup(struct hci_dev *hdev,
817 bdaddr_t *bdaddr, u8 type);
818void hci_white_list_clear(struct hci_dev *hdev);
819int hci_white_list_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
820int hci_white_list_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
821
822struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
823 bdaddr_t *addr, u8 addr_type);
824int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
825 u8 auto_connect, u16 conn_min_interval,
826 u16 conn_max_interval);
827void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
828void hci_conn_params_clear(struct hci_dev *hdev);
829
830struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev,
831 bdaddr_t *addr, u8 addr_type);
832void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
833void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
834void hci_pend_le_conns_clear(struct hci_dev *hdev);
835
836void hci_update_background_scan(struct hci_dev *hdev);
837
838void hci_uuids_clear(struct hci_dev *hdev);
839
840void hci_link_keys_clear(struct hci_dev *hdev);
841struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
842int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
843 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
844struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
845 bool master);
846struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
847 u8 addr_type, u8 type, u8 authenticated,
848 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
849struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
850 u8 addr_type, bool master);
851int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
852void hci_smp_ltks_clear(struct hci_dev *hdev);
853int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
854
855struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
856struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
857 u8 addr_type);
858struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
859 u8 addr_type, u8 val[16], bdaddr_t *rpa);
860void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
861void hci_smp_irks_clear(struct hci_dev *hdev);
862
863void hci_remote_oob_data_clear(struct hci_dev *hdev);
864struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
865 bdaddr_t *bdaddr);
866int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
867 u8 *hash, u8 *randomizer);
868int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
869 u8 *hash192, u8 *randomizer192,
870 u8 *hash256, u8 *randomizer256);
871int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
872
873void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
874
875int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
876int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
877int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
878
879void hci_init_sysfs(struct hci_dev *hdev);
880void hci_conn_init_sysfs(struct hci_conn *conn);
881void hci_conn_add_sysfs(struct hci_conn *conn);
882void hci_conn_del_sysfs(struct hci_conn *conn);
883
884#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
885
886/* ----- LMP capabilities ----- */
887#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
888#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
889#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
890#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
891#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
892#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
893#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
894#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
895#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
896#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
897#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
898#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
899#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
900#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
901#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
902#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
903#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
904#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
905#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
906
907/* ----- Extended LMP capabilities ----- */
908#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
909#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
910#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
911#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
912#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
913#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
914
915/* ----- Host capabilities ----- */
916#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
917#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
918#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
919#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
920
921/* ----- HCI protocols ----- */
922#define HCI_PROTO_DEFER 0x01
923
924static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
925 __u8 type, __u8 *flags)
926{
927 switch (type) {
928 case ACL_LINK:
929 return l2cap_connect_ind(hdev, bdaddr);
930
931 case SCO_LINK:
932 case ESCO_LINK:
933 return sco_connect_ind(hdev, bdaddr, flags);
934
935 default:
936 BT_ERR("unknown link type %d", type);
937 return -EINVAL;
938 }
939}
940
941static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
942{
943 switch (conn->type) {
944 case ACL_LINK:
945 case LE_LINK:
946 l2cap_connect_cfm(conn, status);
947 break;
948
949 case SCO_LINK:
950 case ESCO_LINK:
951 sco_connect_cfm(conn, status);
952 break;
953
954 default:
955 BT_ERR("unknown link type %d", conn->type);
956 break;
957 }
958
959 if (conn->connect_cfm_cb)
960 conn->connect_cfm_cb(conn, status);
961}
962
963static inline int hci_proto_disconn_ind(struct hci_conn *conn)
964{
965 if (conn->type != ACL_LINK && conn->type != LE_LINK)
966 return HCI_ERROR_REMOTE_USER_TERM;
967
968 return l2cap_disconn_ind(conn);
969}
970
971static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
972{
973 switch (conn->type) {
974 case ACL_LINK:
975 case LE_LINK:
976 l2cap_disconn_cfm(conn, reason);
977 break;
978
979 case SCO_LINK:
980 case ESCO_LINK:
981 sco_disconn_cfm(conn, reason);
982 break;
983
984 /* L2CAP would be handled for BREDR chan */
985 case AMP_LINK:
986 break;
987
988 default:
989 BT_ERR("unknown link type %d", conn->type);
990 break;
991 }
992
993 if (conn->disconn_cfm_cb)
994 conn->disconn_cfm_cb(conn, reason);
995}
996
997static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
998{
999 __u8 encrypt;
1000
1001 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1002 return;
1003
1004 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1005 return;
1006
1007 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
1008 l2cap_security_cfm(conn, status, encrypt);
1009
1010 if (conn->security_cfm_cb)
1011 conn->security_cfm_cb(conn, status);
1012}
1013
1014static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1015 __u8 encrypt)
1016{
1017 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1018 return;
1019
1020 l2cap_security_cfm(conn, status, encrypt);
1021
1022 if (conn->security_cfm_cb)
1023 conn->security_cfm_cb(conn, status);
1024}
1025
1026/* ----- HCI callbacks ----- */
1027struct hci_cb {
1028 struct list_head list;
1029
1030 char *name;
1031
1032 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1033 __u8 encrypt);
1034 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1035 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1036};
1037
1038static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1039{
1040 struct hci_cb *cb;
1041 __u8 encrypt;
1042
1043 hci_proto_auth_cfm(conn, status);
1044
1045 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1046 return;
1047
1048 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
1049
1050 read_lock(&hci_cb_list_lock);
1051 list_for_each_entry(cb, &hci_cb_list, list) {
1052 if (cb->security_cfm)
1053 cb->security_cfm(conn, status, encrypt);
1054 }
1055 read_unlock(&hci_cb_list_lock);
1056}
1057
1058static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1059 __u8 encrypt)
1060{
1061 struct hci_cb *cb;
1062
1063 if (conn->sec_level == BT_SECURITY_SDP)
1064 conn->sec_level = BT_SECURITY_LOW;
1065
1066 if (conn->pending_sec_level > conn->sec_level)
1067 conn->sec_level = conn->pending_sec_level;
1068
1069 hci_proto_encrypt_cfm(conn, status, encrypt);
1070
1071 read_lock(&hci_cb_list_lock);
1072 list_for_each_entry(cb, &hci_cb_list, list) {
1073 if (cb->security_cfm)
1074 cb->security_cfm(conn, status, encrypt);
1075 }
1076 read_unlock(&hci_cb_list_lock);
1077}
1078
1079static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1080{
1081 struct hci_cb *cb;
1082
1083 read_lock(&hci_cb_list_lock);
1084 list_for_each_entry(cb, &hci_cb_list, list) {
1085 if (cb->key_change_cfm)
1086 cb->key_change_cfm(conn, status);
1087 }
1088 read_unlock(&hci_cb_list_lock);
1089}
1090
1091static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1092 __u8 role)
1093{
1094 struct hci_cb *cb;
1095
1096 read_lock(&hci_cb_list_lock);
1097 list_for_each_entry(cb, &hci_cb_list, list) {
1098 if (cb->role_switch_cfm)
1099 cb->role_switch_cfm(conn, status, role);
1100 }
1101 read_unlock(&hci_cb_list_lock);
1102}
1103
1104static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1105{
1106 size_t parsed = 0;
1107
1108 if (data_len < 2)
1109 return false;
1110
1111 while (parsed < data_len - 1) {
1112 u8 field_len = data[0];
1113
1114 if (field_len == 0)
1115 break;
1116
1117 parsed += field_len + 1;
1118
1119 if (parsed > data_len)
1120 break;
1121
1122 if (data[1] == type)
1123 return true;
1124
1125 data += field_len + 1;
1126 }
1127
1128 return false;
1129}
1130
1131static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1132{
1133 if (addr_type != 0x01)
1134 return false;
1135
1136 if ((bdaddr->b[5] & 0xc0) == 0x40)
1137 return true;
1138
1139 return false;
1140}
1141
1142static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1143 bdaddr_t *bdaddr, u8 addr_type)
1144{
1145 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1146 return NULL;
1147
1148 return hci_find_irk_by_rpa(hdev, bdaddr);
1149}
1150
1151int hci_register_cb(struct hci_cb *hcb);
1152int hci_unregister_cb(struct hci_cb *hcb);
1153
1154struct hci_request {
1155 struct hci_dev *hdev;
1156 struct sk_buff_head cmd_q;
1157
1158 /* If something goes wrong when building the HCI request, the error
1159 * value is stored in this field.
1160 */
1161 int err;
1162};
1163
1164void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1165int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1166void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1167 const void *param);
1168void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1169 const void *param, u8 event);
1170void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1171
1172void hci_req_add_le_scan_disable(struct hci_request *req);
1173void hci_req_add_le_passive_scan(struct hci_request *req);
1174
1175struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1176 const void *param, u32 timeout);
1177struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1178 const void *param, u8 event, u32 timeout);
1179
1180int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1181 const void *param);
1182void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1183void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1184
1185void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1186
1187/* ----- HCI Sockets ----- */
1188void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1189void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1190void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1191
1192void hci_sock_dev_event(struct hci_dev *hdev, int event);
1193
1194/* Management interface */
1195#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1196#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1197 BIT(BDADDR_LE_RANDOM))
1198#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1199 BIT(BDADDR_LE_PUBLIC) | \
1200 BIT(BDADDR_LE_RANDOM))
1201
1202/* These LE scan and inquiry parameters were chosen according to LE General
1203 * Discovery Procedure specification.
1204 */
1205#define DISCOV_LE_SCAN_WIN 0x12
1206#define DISCOV_LE_SCAN_INT 0x12
1207#define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240)
1208#define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120)
1209#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1210#define DISCOV_BREDR_INQUIRY_LEN 0x08
1211
1212int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1213void mgmt_index_added(struct hci_dev *hdev);
1214void mgmt_index_removed(struct hci_dev *hdev);
1215void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1216int mgmt_powered(struct hci_dev *hdev, u8 powered);
1217void mgmt_discoverable_timeout(struct hci_dev *hdev);
1218void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1219void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1220void mgmt_advertising(struct hci_dev *hdev, u8 advertising);
1221void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1222void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1223 bool persistent);
1224void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1225 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1226 u8 *dev_class);
1227void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1228 u8 link_type, u8 addr_type, u8 reason,
1229 bool mgmt_connected);
1230void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1231 u8 link_type, u8 addr_type, u8 status);
1232void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1233 u8 addr_type, u8 status);
1234void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1235void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1236 u8 status);
1237void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1238 u8 status);
1239int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1240 u8 link_type, u8 addr_type, u32 value,
1241 u8 confirm_hint);
1242int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1243 u8 link_type, u8 addr_type, u8 status);
1244int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1245 u8 link_type, u8 addr_type, u8 status);
1246int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1247 u8 link_type, u8 addr_type);
1248int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1249 u8 link_type, u8 addr_type, u8 status);
1250int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1251 u8 link_type, u8 addr_type, u8 status);
1252int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1253 u8 link_type, u8 addr_type, u32 passkey,
1254 u8 entered);
1255void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1256 u8 addr_type, u8 status);
1257void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1258void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1259void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1260void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1261 u8 status);
1262void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1263void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1264 u8 *randomizer192, u8 *hash256,
1265 u8 *randomizer256, u8 status);
1266void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1267 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1268 u8 ssp, u8 *eir, u16 eir_len);
1269void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1270 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1271void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1272int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1273int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1274void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1275void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1276void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1277 bool persistent);
1278void mgmt_reenable_advertising(struct hci_dev *hdev);
1279void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1280
1281/* HCI info for socket */
1282#define hci_pi(sk) ((struct hci_pinfo *) sk)
1283
1284struct hci_pinfo {
1285 struct bt_sock bt;
1286 struct hci_dev *hdev;
1287 struct hci_filter filter;
1288 __u32 cmsg_mask;
1289 unsigned short channel;
1290};
1291
1292/* HCI security filter */
1293#define HCI_SFLT_MAX_OGF 5
1294
1295struct hci_sec_filter {
1296 __u32 type_mask;
1297 __u32 event_mask[2];
1298 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1299};
1300
1301/* ----- HCI requests ----- */
1302#define HCI_REQ_DONE 0
1303#define HCI_REQ_PEND 1
1304#define HCI_REQ_CANCELED 2
1305
1306#define hci_req_lock(d) mutex_lock(&d->req_lock)
1307#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1308
1309void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1310 u16 latency, u16 to_multiplier);
1311void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1312 __u8 ltk[16]);
1313
1314int hci_update_random_address(struct hci_request *req, bool require_privacy,
1315 u8 *own_addr_type);
1316void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1317 u8 *bdaddr_type);
1318
1319#define SCO_AIRMODE_MASK 0x0003
1320#define SCO_AIRMODE_CVSD 0x0000
1321#define SCO_AIRMODE_TRANSP 0x0003
1322
1323#endif /* __HCI_CORE_H */