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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 <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 */
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 */