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bf2ef56678875aa74a68f9413a4615dfa79492ef
[deliverable/linux.git] / include / net / bluetooth / 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 */
35 struct 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
46 struct 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
59 struct discovery_state {
60 enum {
61 DISCOVERY_STOPPED,
62 DISCOVERY_STARTING,
63 DISCOVERY_INQUIRY,
64 DISCOVERY_LE_SCAN,
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
74 struct 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
81 struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84 };
85
86 struct bt_uuid {
87 struct list_head list;
88 u8 uuid[16];
89 u8 svc_hint;
90 };
91
92 struct 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
104 struct link_key {
105 struct list_head list;
106 bdaddr_t bdaddr;
107 u8 type;
108 u8 val[16];
109 u8 pin_len;
110 };
111
112 struct oob_data {
113 struct list_head list;
114 bdaddr_t bdaddr;
115 u8 hash[16];
116 u8 randomizer[16];
117 };
118
119 struct adv_entry {
120 struct list_head list;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123 };
124
125 #define NUM_REASSEMBLY 4
126 struct hci_dev {
127 struct list_head list;
128 struct mutex lock;
129
130 char name[8];
131 unsigned long flags;
132 __u16 id;
133 __u8 bus;
134 __u8 dev_type;
135 bdaddr_t bdaddr;
136 __u8 dev_name[HCI_MAX_NAME_LENGTH];
137 __u8 eir[HCI_MAX_EIR_LENGTH];
138 __u8 dev_class[3];
139 __u8 major_class;
140 __u8 minor_class;
141 __u8 features[8];
142 __u8 host_features[8];
143 __u8 commands[64];
144 __u8 hci_ver;
145 __u16 hci_rev;
146 __u8 lmp_ver;
147 __u16 manufacturer;
148 __le16 lmp_subver;
149 __u16 voice_setting;
150 __u8 io_capability;
151
152 __u16 pkt_type;
153 __u16 esco_type;
154 __u16 link_policy;
155 __u16 link_mode;
156
157 __u32 idle_timeout;
158 __u16 sniff_min_interval;
159 __u16 sniff_max_interval;
160
161 __u8 amp_status;
162 __u32 amp_total_bw;
163 __u32 amp_max_bw;
164 __u32 amp_min_latency;
165 __u32 amp_max_pdu;
166 __u8 amp_type;
167 __u16 amp_pal_cap;
168 __u16 amp_assoc_size;
169 __u32 amp_max_flush_to;
170 __u32 amp_be_flush_to;
171
172 __u8 flow_ctl_mode;
173
174 unsigned int auto_accept_delay;
175
176 unsigned long quirks;
177
178 atomic_t cmd_cnt;
179 unsigned int acl_cnt;
180 unsigned int sco_cnt;
181 unsigned int le_cnt;
182
183 unsigned int acl_mtu;
184 unsigned int sco_mtu;
185 unsigned int le_mtu;
186 unsigned int acl_pkts;
187 unsigned int sco_pkts;
188 unsigned int le_pkts;
189
190 __u16 block_len;
191 __u16 block_mtu;
192 __u16 num_blocks;
193 __u16 block_cnt;
194
195 unsigned long acl_last_tx;
196 unsigned long sco_last_tx;
197 unsigned long le_last_tx;
198
199 struct workqueue_struct *workqueue;
200
201 struct work_struct power_on;
202 struct delayed_work power_off;
203
204 __u16 discov_timeout;
205 struct delayed_work discov_off;
206
207 struct delayed_work service_cache;
208
209 struct timer_list cmd_timer;
210
211 struct work_struct rx_work;
212 struct work_struct cmd_work;
213 struct work_struct tx_work;
214
215 struct sk_buff_head rx_q;
216 struct sk_buff_head raw_q;
217 struct sk_buff_head cmd_q;
218
219 struct sk_buff *sent_cmd;
220 struct sk_buff *reassembly[NUM_REASSEMBLY];
221
222 struct mutex req_lock;
223 wait_queue_head_t req_wait_q;
224 __u32 req_status;
225 __u32 req_result;
226
227 __u16 init_last_cmd;
228
229 struct list_head mgmt_pending;
230
231 struct discovery_state discovery;
232 struct hci_conn_hash conn_hash;
233 struct list_head blacklist;
234
235 struct list_head uuids;
236
237 struct list_head link_keys;
238
239 struct list_head long_term_keys;
240
241 struct list_head remote_oob_data;
242
243 struct list_head adv_entries;
244 struct delayed_work adv_work;
245
246 struct hci_dev_stats stat;
247
248 struct sk_buff_head driver_init;
249
250 void *driver_data;
251 void *core_data;
252
253 atomic_t promisc;
254
255 struct dentry *debugfs;
256
257 struct device *parent;
258 struct device dev;
259
260 struct rfkill *rfkill;
261
262 unsigned long dev_flags;
263
264 int (*open)(struct hci_dev *hdev);
265 int (*close)(struct hci_dev *hdev);
266 int (*flush)(struct hci_dev *hdev);
267 int (*send)(struct sk_buff *skb);
268 void (*notify)(struct hci_dev *hdev, unsigned int evt);
269 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
270 };
271
272 struct hci_conn {
273 struct list_head list;
274
275 atomic_t refcnt;
276
277 bdaddr_t dst;
278 __u8 dst_type;
279 __u16 handle;
280 __u16 state;
281 __u8 mode;
282 __u8 type;
283 bool out;
284 __u8 attempt;
285 __u8 dev_class[3];
286 __u8 features[8];
287 __u16 interval;
288 __u16 pkt_type;
289 __u16 link_policy;
290 __u32 link_mode;
291 __u8 key_type;
292 __u8 auth_type;
293 __u8 sec_level;
294 __u8 pending_sec_level;
295 __u8 pin_length;
296 __u8 enc_key_size;
297 __u8 io_capability;
298 __u16 disc_timeout;
299 unsigned long flags;
300
301 __u8 remote_cap;
302 __u8 remote_auth;
303
304 unsigned int sent;
305
306 struct sk_buff_head data_q;
307 struct list_head chan_list;
308
309 struct delayed_work disc_work;
310 struct timer_list idle_timer;
311 struct timer_list auto_accept_timer;
312
313 struct device dev;
314 atomic_t devref;
315
316 struct hci_dev *hdev;
317 void *l2cap_data;
318 void *sco_data;
319 void *smp_conn;
320
321 struct hci_conn *link;
322
323 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
324 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
325 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
326 };
327
328 struct hci_chan {
329 struct list_head list;
330
331 struct hci_conn *conn;
332 struct sk_buff_head data_q;
333 unsigned int sent;
334 };
335
336 extern struct list_head hci_dev_list;
337 extern struct list_head hci_cb_list;
338 extern rwlock_t hci_dev_list_lock;
339 extern rwlock_t hci_cb_list_lock;
340
341 /* ----- HCI interface to upper protocols ----- */
342 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
343 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
344 extern int l2cap_disconn_ind(struct hci_conn *hcon);
345 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
346 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
347 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
348
349 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
350 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
351 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
352 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
353
354 /* ----- Inquiry cache ----- */
355 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
356 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
357
358 static inline void discovery_init(struct hci_dev *hdev)
359 {
360 hdev->discovery.state = DISCOVERY_STOPPED;
361 INIT_LIST_HEAD(&hdev->discovery.all);
362 INIT_LIST_HEAD(&hdev->discovery.unknown);
363 INIT_LIST_HEAD(&hdev->discovery.resolve);
364 }
365
366 bool hci_discovery_active(struct hci_dev *hdev);
367
368 void hci_discovery_set_state(struct hci_dev *hdev, int state);
369
370 static inline int inquiry_cache_empty(struct hci_dev *hdev)
371 {
372 return list_empty(&hdev->discovery.all);
373 }
374
375 static inline long inquiry_cache_age(struct hci_dev *hdev)
376 {
377 struct discovery_state *c = &hdev->discovery;
378 return jiffies - c->timestamp;
379 }
380
381 static inline long inquiry_entry_age(struct inquiry_entry *e)
382 {
383 return jiffies - e->timestamp;
384 }
385
386 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
387 bdaddr_t *bdaddr);
388 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
389 bdaddr_t *bdaddr);
390 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
391 bdaddr_t *bdaddr,
392 int state);
393 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
394 struct inquiry_entry *ie);
395 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
396 bool name_known);
397
398 /* ----- HCI Connections ----- */
399 enum {
400 HCI_CONN_AUTH_PEND,
401 HCI_CONN_REAUTH_PEND,
402 HCI_CONN_ENCRYPT_PEND,
403 HCI_CONN_RSWITCH_PEND,
404 HCI_CONN_MODE_CHANGE_PEND,
405 HCI_CONN_SCO_SETUP_PEND,
406 HCI_CONN_LE_SMP_PEND,
407 HCI_CONN_MGMT_CONNECTED,
408 HCI_CONN_SSP_ENABLED,
409 HCI_CONN_POWER_SAVE,
410 HCI_CONN_REMOTE_OOB,
411 };
412
413 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
414 {
415 struct hci_dev *hdev = conn->hdev;
416 return (test_bit(HCI_SSP_ENABLED, &hdev->flags) &&
417 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
418 }
419
420 static inline void hci_conn_hash_init(struct hci_dev *hdev)
421 {
422 struct hci_conn_hash *h = &hdev->conn_hash;
423 INIT_LIST_HEAD(&h->list);
424 h->acl_num = 0;
425 h->sco_num = 0;
426 h->le_num = 0;
427 }
428
429 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
430 {
431 struct hci_conn_hash *h = &hdev->conn_hash;
432 list_add_rcu(&c->list, &h->list);
433 switch (c->type) {
434 case ACL_LINK:
435 h->acl_num++;
436 break;
437 case LE_LINK:
438 h->le_num++;
439 break;
440 case SCO_LINK:
441 case ESCO_LINK:
442 h->sco_num++;
443 break;
444 }
445 }
446
447 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
448 {
449 struct hci_conn_hash *h = &hdev->conn_hash;
450
451 list_del_rcu(&c->list);
452 synchronize_rcu();
453
454 switch (c->type) {
455 case ACL_LINK:
456 h->acl_num--;
457 break;
458 case LE_LINK:
459 h->le_num--;
460 break;
461 case SCO_LINK:
462 case ESCO_LINK:
463 h->sco_num--;
464 break;
465 }
466 }
467
468 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
469 {
470 struct hci_conn_hash *h = &hdev->conn_hash;
471 switch (type) {
472 case ACL_LINK:
473 return h->acl_num;
474 case LE_LINK:
475 return h->le_num;
476 case SCO_LINK:
477 case ESCO_LINK:
478 return h->sco_num;
479 default:
480 return 0;
481 }
482 }
483
484 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
485 __u16 handle)
486 {
487 struct hci_conn_hash *h = &hdev->conn_hash;
488 struct hci_conn *c;
489
490 rcu_read_lock();
491
492 list_for_each_entry_rcu(c, &h->list, list) {
493 if (c->handle == handle) {
494 rcu_read_unlock();
495 return c;
496 }
497 }
498 rcu_read_unlock();
499
500 return NULL;
501 }
502
503 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
504 __u8 type, bdaddr_t *ba)
505 {
506 struct hci_conn_hash *h = &hdev->conn_hash;
507 struct hci_conn *c;
508
509 rcu_read_lock();
510
511 list_for_each_entry_rcu(c, &h->list, list) {
512 if (c->type == type && !bacmp(&c->dst, ba)) {
513 rcu_read_unlock();
514 return c;
515 }
516 }
517
518 rcu_read_unlock();
519
520 return NULL;
521 }
522
523 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
524 __u8 type, __u16 state)
525 {
526 struct hci_conn_hash *h = &hdev->conn_hash;
527 struct hci_conn *c;
528
529 rcu_read_lock();
530
531 list_for_each_entry_rcu(c, &h->list, list) {
532 if (c->type == type && c->state == state) {
533 rcu_read_unlock();
534 return c;
535 }
536 }
537
538 rcu_read_unlock();
539
540 return NULL;
541 }
542
543 void hci_acl_connect(struct hci_conn *conn);
544 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
545 void hci_add_sco(struct hci_conn *conn, __u16 handle);
546 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
547 void hci_sco_setup(struct hci_conn *conn, __u8 status);
548
549 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
550 int hci_conn_del(struct hci_conn *conn);
551 void hci_conn_hash_flush(struct hci_dev *hdev);
552 void hci_conn_check_pending(struct hci_dev *hdev);
553
554 struct hci_chan *hci_chan_create(struct hci_conn *conn);
555 int hci_chan_del(struct hci_chan *chan);
556 void hci_chan_list_flush(struct hci_conn *conn);
557
558 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
559 __u8 sec_level, __u8 auth_type);
560 int hci_conn_check_link_mode(struct hci_conn *conn);
561 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
562 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
563 int hci_conn_change_link_key(struct hci_conn *conn);
564 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
565
566 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
567
568 void hci_conn_hold_device(struct hci_conn *conn);
569 void hci_conn_put_device(struct hci_conn *conn);
570
571 static inline void hci_conn_hold(struct hci_conn *conn)
572 {
573 atomic_inc(&conn->refcnt);
574 cancel_delayed_work(&conn->disc_work);
575 }
576
577 static inline void hci_conn_put(struct hci_conn *conn)
578 {
579 if (atomic_dec_and_test(&conn->refcnt)) {
580 unsigned long timeo;
581 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
582 del_timer(&conn->idle_timer);
583 if (conn->state == BT_CONNECTED) {
584 timeo = msecs_to_jiffies(conn->disc_timeout);
585 if (!conn->out)
586 timeo *= 2;
587 } else {
588 timeo = msecs_to_jiffies(10);
589 }
590 } else {
591 timeo = msecs_to_jiffies(10);
592 }
593 cancel_delayed_work(&conn->disc_work);
594 queue_delayed_work(conn->hdev->workqueue,
595 &conn->disc_work, timeo);
596 }
597 }
598
599 /* ----- HCI Devices ----- */
600 static inline void hci_dev_put(struct hci_dev *d)
601 {
602 put_device(&d->dev);
603 }
604
605 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
606 {
607 get_device(&d->dev);
608 return d;
609 }
610
611 #define hci_dev_lock(d) mutex_lock(&d->lock)
612 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
613
614 struct hci_dev *hci_dev_get(int index);
615 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
616
617 struct hci_dev *hci_alloc_dev(void);
618 void hci_free_dev(struct hci_dev *hdev);
619 int hci_register_dev(struct hci_dev *hdev);
620 void hci_unregister_dev(struct hci_dev *hdev);
621 int hci_suspend_dev(struct hci_dev *hdev);
622 int hci_resume_dev(struct hci_dev *hdev);
623 int hci_dev_open(__u16 dev);
624 int hci_dev_close(__u16 dev);
625 int hci_dev_reset(__u16 dev);
626 int hci_dev_reset_stat(__u16 dev);
627 int hci_dev_cmd(unsigned int cmd, void __user *arg);
628 int hci_get_dev_list(void __user *arg);
629 int hci_get_dev_info(void __user *arg);
630 int hci_get_conn_list(void __user *arg);
631 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
632 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
633 int hci_inquiry(void __user *arg);
634
635 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
636 int hci_blacklist_clear(struct hci_dev *hdev);
637 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
638 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
639
640 int hci_uuids_clear(struct hci_dev *hdev);
641
642 int hci_link_keys_clear(struct hci_dev *hdev);
643 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
644 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
645 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
646 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
647 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
648 int new_key, u8 authenticated, u8 tk[16],
649 u8 enc_size, u16 ediv, u8 rand[8]);
650 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
651 u8 addr_type);
652 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
653 int hci_smp_ltks_clear(struct hci_dev *hdev);
654 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
655
656 int hci_remote_oob_data_clear(struct hci_dev *hdev);
657 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
658 bdaddr_t *bdaddr);
659 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
660 u8 *randomizer);
661 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
662
663 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
664 int hci_adv_entries_clear(struct hci_dev *hdev);
665 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
666 int hci_add_adv_entry(struct hci_dev *hdev,
667 struct hci_ev_le_advertising_info *ev);
668
669 void hci_del_off_timer(struct hci_dev *hdev);
670
671 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
672
673 int hci_recv_frame(struct sk_buff *skb);
674 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
675 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
676
677 void hci_init_sysfs(struct hci_dev *hdev);
678 int hci_add_sysfs(struct hci_dev *hdev);
679 void hci_del_sysfs(struct hci_dev *hdev);
680 void hci_conn_init_sysfs(struct hci_conn *conn);
681 void hci_conn_add_sysfs(struct hci_conn *conn);
682 void hci_conn_del_sysfs(struct hci_conn *conn);
683
684 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
685
686 /* ----- LMP capabilities ----- */
687 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
688 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
689 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
690 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
691 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
692 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
693 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
694 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
695
696 /* ----- Extended LMP capabilities ----- */
697 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
698
699 /* ----- HCI protocols ----- */
700 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
701 __u8 type)
702 {
703 switch (type) {
704 case ACL_LINK:
705 return l2cap_connect_ind(hdev, bdaddr);
706
707 case SCO_LINK:
708 case ESCO_LINK:
709 return sco_connect_ind(hdev, bdaddr);
710
711 default:
712 BT_ERR("unknown link type %d", type);
713 return -EINVAL;
714 }
715 }
716
717 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
718 {
719 switch (conn->type) {
720 case ACL_LINK:
721 case LE_LINK:
722 l2cap_connect_cfm(conn, status);
723 break;
724
725 case SCO_LINK:
726 case ESCO_LINK:
727 sco_connect_cfm(conn, status);
728 break;
729
730 default:
731 BT_ERR("unknown link type %d", conn->type);
732 break;
733 }
734
735 if (conn->connect_cfm_cb)
736 conn->connect_cfm_cb(conn, status);
737 }
738
739 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
740 {
741 if (conn->type != ACL_LINK && conn->type != LE_LINK)
742 return HCI_ERROR_REMOTE_USER_TERM;
743
744 return l2cap_disconn_ind(conn);
745 }
746
747 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
748 {
749 switch (conn->type) {
750 case ACL_LINK:
751 case LE_LINK:
752 l2cap_disconn_cfm(conn, reason);
753 break;
754
755 case SCO_LINK:
756 case ESCO_LINK:
757 sco_disconn_cfm(conn, reason);
758 break;
759
760 default:
761 BT_ERR("unknown link type %d", conn->type);
762 break;
763 }
764
765 if (conn->disconn_cfm_cb)
766 conn->disconn_cfm_cb(conn, reason);
767 }
768
769 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
770 {
771 __u8 encrypt;
772
773 if (conn->type != ACL_LINK && conn->type != LE_LINK)
774 return;
775
776 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
777 return;
778
779 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
780 l2cap_security_cfm(conn, status, encrypt);
781
782 if (conn->security_cfm_cb)
783 conn->security_cfm_cb(conn, status);
784 }
785
786 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
787 __u8 encrypt)
788 {
789 if (conn->type != ACL_LINK && conn->type != LE_LINK)
790 return;
791
792 l2cap_security_cfm(conn, status, encrypt);
793
794 if (conn->security_cfm_cb)
795 conn->security_cfm_cb(conn, status);
796 }
797
798 /* ----- HCI callbacks ----- */
799 struct hci_cb {
800 struct list_head list;
801
802 char *name;
803
804 void (*security_cfm) (struct hci_conn *conn, __u8 status,
805 __u8 encrypt);
806 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
807 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
808 };
809
810 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
811 {
812 struct list_head *p;
813 __u8 encrypt;
814
815 hci_proto_auth_cfm(conn, status);
816
817 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
818 return;
819
820 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
821
822 read_lock(&hci_cb_list_lock);
823 list_for_each(p, &hci_cb_list) {
824 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
825 if (cb->security_cfm)
826 cb->security_cfm(conn, status, encrypt);
827 }
828 read_unlock(&hci_cb_list_lock);
829 }
830
831 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
832 __u8 encrypt)
833 {
834 struct list_head *p;
835
836 if (conn->sec_level == BT_SECURITY_SDP)
837 conn->sec_level = BT_SECURITY_LOW;
838
839 if (conn->pending_sec_level > conn->sec_level)
840 conn->sec_level = conn->pending_sec_level;
841
842 hci_proto_encrypt_cfm(conn, status, encrypt);
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
853 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
854 {
855 struct list_head *p;
856
857 read_lock(&hci_cb_list_lock);
858 list_for_each(p, &hci_cb_list) {
859 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
860 if (cb->key_change_cfm)
861 cb->key_change_cfm(conn, status);
862 }
863 read_unlock(&hci_cb_list_lock);
864 }
865
866 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
867 __u8 role)
868 {
869 struct list_head *p;
870
871 read_lock(&hci_cb_list_lock);
872 list_for_each(p, &hci_cb_list) {
873 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
874 if (cb->role_switch_cfm)
875 cb->role_switch_cfm(conn, status, role);
876 }
877 read_unlock(&hci_cb_list_lock);
878 }
879
880 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
881 {
882 u8 field_len;
883 size_t parsed;
884
885 for (parsed = 0; parsed < data_len - 1; parsed += field_len) {
886 field_len = data[0];
887
888 if (field_len == 0)
889 break;
890
891 parsed += field_len + 1;
892
893 if (parsed > data_len)
894 break;
895
896 if (data[1] == type)
897 return true;
898
899 data += field_len + 1;
900 }
901
902 return false;
903 }
904
905 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
906 u8 data_len)
907 {
908 eir[eir_len++] = sizeof(type) + data_len;
909 eir[eir_len++] = type;
910 memcpy(&eir[eir_len], data, data_len);
911 eir_len += data_len;
912
913 return eir_len;
914 }
915
916 int hci_register_cb(struct hci_cb *hcb);
917 int hci_unregister_cb(struct hci_cb *hcb);
918
919 int hci_register_notifier(struct notifier_block *nb);
920 int hci_unregister_notifier(struct notifier_block *nb);
921
922 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
923 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
924 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
925
926 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
927
928 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
929
930 /* ----- HCI Sockets ----- */
931 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
932 struct sock *skip_sk);
933
934 /* Management interface */
935 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
936 int mgmt_index_added(struct hci_dev *hdev);
937 int mgmt_index_removed(struct hci_dev *hdev);
938 int mgmt_powered(struct hci_dev *hdev, u8 powered);
939 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
940 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
941 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
942 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
943 u8 persistent);
944 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
945 u8 addr_type, u8 *name, u8 name_len,
946 u8 *dev_class);
947 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
948 u8 link_type, u8 addr_type);
949 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
950 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
951 u8 addr_type, u8 status);
952 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
953 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
954 u8 status);
955 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
956 u8 status);
957 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
958 __le32 value, u8 confirm_hint);
959 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
960 u8 status);
961 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
962 bdaddr_t *bdaddr, u8 status);
963 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
964 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
965 u8 status);
966 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
967 bdaddr_t *bdaddr, u8 status);
968 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
969 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
970 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
971 u8 *randomizer, u8 status);
972 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
973 u8 addr_type, u8 *dev_class, s8 rssi,
974 u8 cfm_name, u8 *eir, u16 eir_len);
975 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
976 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
977 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
978 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
979 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
980 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
981 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
982
983 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
984
985 /* HCI info for socket */
986 #define hci_pi(sk) ((struct hci_pinfo *) sk)
987
988 /* HCI socket flags */
989 #define HCI_PI_MGMT_INIT 0
990
991 struct hci_pinfo {
992 struct bt_sock bt;
993 struct hci_dev *hdev;
994 struct hci_filter filter;
995 __u32 cmsg_mask;
996 unsigned short channel;
997 unsigned long flags;
998 };
999
1000 /* HCI security filter */
1001 #define HCI_SFLT_MAX_OGF 5
1002
1003 struct hci_sec_filter {
1004 __u32 type_mask;
1005 __u32 event_mask[2];
1006 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1007 };
1008
1009 /* ----- HCI requests ----- */
1010 #define HCI_REQ_DONE 0
1011 #define HCI_REQ_PEND 1
1012 #define HCI_REQ_CANCELED 2
1013
1014 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1015 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1016
1017 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1018
1019 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1020 u16 latency, u16 to_multiplier);
1021 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1022 __u8 ltk[16]);
1023 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
1024 void hci_le_ltk_neg_reply(struct hci_conn *conn);
1025
1026 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1027 int hci_cancel_inquiry(struct hci_dev *hdev);
1028
1029 #endif /* __HCI_CORE_H */
Linux kernel - Deliverables
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