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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[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 <net/bluetooth/hci.h>
29
30 /* HCI priority */
31 #define HCI_PRIO_MAX 7
32
33 /* HCI Core structures */
34 struct 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
45 struct 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
58 struct 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
73 struct hci_conn_hash {
74 struct list_head list;
75 unsigned int acl_num;
76 unsigned int sco_num;
77 unsigned int le_num;
78 };
79
80 struct bdaddr_list {
81 struct list_head list;
82 bdaddr_t bdaddr;
83 };
84
85 struct bt_uuid {
86 struct list_head list;
87 u8 uuid[16];
88 u8 svc_hint;
89 };
90
91 struct smp_ltk {
92 struct list_head list;
93 bdaddr_t bdaddr;
94 u8 bdaddr_type;
95 u8 authenticated;
96 u8 type;
97 u8 enc_size;
98 __le16 ediv;
99 u8 rand[8];
100 u8 val[16];
101 } __packed;
102
103 struct link_key {
104 struct list_head list;
105 bdaddr_t bdaddr;
106 u8 type;
107 u8 val[HCI_LINK_KEY_SIZE];
108 u8 pin_len;
109 };
110
111 struct oob_data {
112 struct list_head list;
113 bdaddr_t bdaddr;
114 u8 hash[16];
115 u8 randomizer[16];
116 };
117
118 struct le_scan_params {
119 u8 type;
120 u16 interval;
121 u16 window;
122 int timeout;
123 };
124
125 #define HCI_MAX_SHORT_NAME_LENGTH 10
126
127 #define NUM_REASSEMBLY 4
128 struct hci_dev {
129 struct list_head list;
130 struct mutex lock;
131
132 char name[8];
133 unsigned long flags;
134 __u16 id;
135 __u8 bus;
136 __u8 dev_type;
137 bdaddr_t bdaddr;
138 __u8 dev_name[HCI_MAX_NAME_LENGTH];
139 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
140 __u8 eir[HCI_MAX_EIR_LENGTH];
141 __u8 dev_class[3];
142 __u8 major_class;
143 __u8 minor_class;
144 __u8 features[8];
145 __u8 host_features[8];
146 __u8 commands[64];
147 __u8 hci_ver;
148 __u16 hci_rev;
149 __u8 lmp_ver;
150 __u16 manufacturer;
151 __u16 lmp_subver;
152 __u16 voice_setting;
153 __u8 io_capability;
154 __s8 inq_tx_power;
155 __u16 devid_source;
156 __u16 devid_vendor;
157 __u16 devid_product;
158 __u16 devid_version;
159
160 __u16 pkt_type;
161 __u16 esco_type;
162 __u16 link_policy;
163 __u16 link_mode;
164
165 __u32 idle_timeout;
166 __u16 sniff_min_interval;
167 __u16 sniff_max_interval;
168
169 __u8 amp_status;
170 __u32 amp_total_bw;
171 __u32 amp_max_bw;
172 __u32 amp_min_latency;
173 __u32 amp_max_pdu;
174 __u8 amp_type;
175 __u16 amp_pal_cap;
176 __u16 amp_assoc_size;
177 __u32 amp_max_flush_to;
178 __u32 amp_be_flush_to;
179
180 __u8 flow_ctl_mode;
181
182 unsigned int auto_accept_delay;
183
184 unsigned long quirks;
185
186 atomic_t cmd_cnt;
187 unsigned int acl_cnt;
188 unsigned int sco_cnt;
189 unsigned int le_cnt;
190
191 unsigned int acl_mtu;
192 unsigned int sco_mtu;
193 unsigned int le_mtu;
194 unsigned int acl_pkts;
195 unsigned int sco_pkts;
196 unsigned int le_pkts;
197
198 __u16 block_len;
199 __u16 block_mtu;
200 __u16 num_blocks;
201 __u16 block_cnt;
202
203 unsigned long acl_last_tx;
204 unsigned long sco_last_tx;
205 unsigned long le_last_tx;
206
207 struct workqueue_struct *workqueue;
208
209 struct work_struct power_on;
210 struct delayed_work power_off;
211
212 __u16 discov_timeout;
213 struct delayed_work discov_off;
214
215 struct delayed_work service_cache;
216
217 struct timer_list cmd_timer;
218
219 struct work_struct rx_work;
220 struct work_struct cmd_work;
221 struct work_struct tx_work;
222
223 struct sk_buff_head rx_q;
224 struct sk_buff_head raw_q;
225 struct sk_buff_head cmd_q;
226
227 struct sk_buff *sent_cmd;
228 struct sk_buff *reassembly[NUM_REASSEMBLY];
229
230 struct mutex req_lock;
231 wait_queue_head_t req_wait_q;
232 __u32 req_status;
233 __u32 req_result;
234
235 __u16 init_last_cmd;
236
237 struct list_head mgmt_pending;
238
239 struct discovery_state discovery;
240 struct hci_conn_hash conn_hash;
241 struct list_head blacklist;
242
243 struct list_head uuids;
244
245 struct list_head link_keys;
246
247 struct list_head long_term_keys;
248
249 struct list_head remote_oob_data;
250
251 struct hci_dev_stats stat;
252
253 struct sk_buff_head driver_init;
254
255 void *core_data;
256
257 atomic_t promisc;
258
259 struct dentry *debugfs;
260
261 struct device dev;
262
263 struct rfkill *rfkill;
264
265 unsigned long dev_flags;
266
267 struct delayed_work le_scan_disable;
268
269 struct work_struct le_scan;
270 struct le_scan_params le_scan_params;
271
272 int (*open)(struct hci_dev *hdev);
273 int (*close)(struct hci_dev *hdev);
274 int (*flush)(struct hci_dev *hdev);
275 int (*send)(struct sk_buff *skb);
276 void (*notify)(struct hci_dev *hdev, unsigned int evt);
277 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
278 };
279
280 struct hci_conn {
281 struct list_head list;
282
283 atomic_t refcnt;
284
285 bdaddr_t dst;
286 __u8 dst_type;
287 __u16 handle;
288 __u16 state;
289 __u8 mode;
290 __u8 type;
291 bool out;
292 __u8 attempt;
293 __u8 dev_class[3];
294 __u8 features[8];
295 __u16 interval;
296 __u16 pkt_type;
297 __u16 link_policy;
298 __u32 link_mode;
299 __u8 key_type;
300 __u8 auth_type;
301 __u8 sec_level;
302 __u8 pending_sec_level;
303 __u8 pin_length;
304 __u8 enc_key_size;
305 __u8 io_capability;
306 __u16 disc_timeout;
307 unsigned long flags;
308
309 __u8 remote_cap;
310 __u8 remote_auth;
311 bool flush_key;
312
313 unsigned int sent;
314
315 struct sk_buff_head data_q;
316 struct list_head chan_list;
317
318 struct delayed_work disc_work;
319 struct timer_list idle_timer;
320 struct timer_list auto_accept_timer;
321
322 struct device dev;
323 atomic_t devref;
324
325 struct hci_dev *hdev;
326 void *l2cap_data;
327 void *sco_data;
328 void *smp_conn;
329 struct amp_mgr *amp_mgr;
330
331 struct hci_conn *link;
332
333 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
334 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
335 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
336 };
337
338 struct hci_chan {
339 struct list_head list;
340
341 struct hci_conn *conn;
342 struct sk_buff_head data_q;
343 unsigned int sent;
344 };
345
346 extern struct list_head hci_dev_list;
347 extern struct list_head hci_cb_list;
348 extern rwlock_t hci_dev_list_lock;
349 extern rwlock_t hci_cb_list_lock;
350
351 /* ----- HCI interface to upper protocols ----- */
352 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
353 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
354 extern int l2cap_disconn_ind(struct hci_conn *hcon);
355 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
356 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
357 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
358 u16 flags);
359
360 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
361 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
362 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
363 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
364
365 /* ----- Inquiry cache ----- */
366 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
367 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
368
369 static inline void discovery_init(struct hci_dev *hdev)
370 {
371 hdev->discovery.state = DISCOVERY_STOPPED;
372 INIT_LIST_HEAD(&hdev->discovery.all);
373 INIT_LIST_HEAD(&hdev->discovery.unknown);
374 INIT_LIST_HEAD(&hdev->discovery.resolve);
375 }
376
377 bool hci_discovery_active(struct hci_dev *hdev);
378
379 void hci_discovery_set_state(struct hci_dev *hdev, int state);
380
381 static inline int inquiry_cache_empty(struct hci_dev *hdev)
382 {
383 return list_empty(&hdev->discovery.all);
384 }
385
386 static inline long inquiry_cache_age(struct hci_dev *hdev)
387 {
388 struct discovery_state *c = &hdev->discovery;
389 return jiffies - c->timestamp;
390 }
391
392 static inline long inquiry_entry_age(struct inquiry_entry *e)
393 {
394 return jiffies - e->timestamp;
395 }
396
397 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
398 bdaddr_t *bdaddr);
399 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
400 bdaddr_t *bdaddr);
401 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
402 bdaddr_t *bdaddr,
403 int state);
404 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
405 struct inquiry_entry *ie);
406 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
407 bool name_known, bool *ssp);
408
409 /* ----- HCI Connections ----- */
410 enum {
411 HCI_CONN_AUTH_PEND,
412 HCI_CONN_REAUTH_PEND,
413 HCI_CONN_ENCRYPT_PEND,
414 HCI_CONN_RSWITCH_PEND,
415 HCI_CONN_MODE_CHANGE_PEND,
416 HCI_CONN_SCO_SETUP_PEND,
417 HCI_CONN_LE_SMP_PEND,
418 HCI_CONN_MGMT_CONNECTED,
419 HCI_CONN_SSP_ENABLED,
420 HCI_CONN_POWER_SAVE,
421 HCI_CONN_REMOTE_OOB,
422 };
423
424 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
425 {
426 struct hci_dev *hdev = conn->hdev;
427 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
428 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
429 }
430
431 static inline void hci_conn_hash_init(struct hci_dev *hdev)
432 {
433 struct hci_conn_hash *h = &hdev->conn_hash;
434 INIT_LIST_HEAD(&h->list);
435 h->acl_num = 0;
436 h->sco_num = 0;
437 h->le_num = 0;
438 }
439
440 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
441 {
442 struct hci_conn_hash *h = &hdev->conn_hash;
443 list_add_rcu(&c->list, &h->list);
444 switch (c->type) {
445 case ACL_LINK:
446 h->acl_num++;
447 break;
448 case LE_LINK:
449 h->le_num++;
450 break;
451 case SCO_LINK:
452 case ESCO_LINK:
453 h->sco_num++;
454 break;
455 }
456 }
457
458 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
459 {
460 struct hci_conn_hash *h = &hdev->conn_hash;
461
462 list_del_rcu(&c->list);
463 synchronize_rcu();
464
465 switch (c->type) {
466 case ACL_LINK:
467 h->acl_num--;
468 break;
469 case LE_LINK:
470 h->le_num--;
471 break;
472 case SCO_LINK:
473 case ESCO_LINK:
474 h->sco_num--;
475 break;
476 }
477 }
478
479 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
480 {
481 struct hci_conn_hash *h = &hdev->conn_hash;
482 switch (type) {
483 case ACL_LINK:
484 return h->acl_num;
485 case LE_LINK:
486 return h->le_num;
487 case SCO_LINK:
488 case ESCO_LINK:
489 return h->sco_num;
490 default:
491 return 0;
492 }
493 }
494
495 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
496 __u16 handle)
497 {
498 struct hci_conn_hash *h = &hdev->conn_hash;
499 struct hci_conn *c;
500
501 rcu_read_lock();
502
503 list_for_each_entry_rcu(c, &h->list, list) {
504 if (c->handle == handle) {
505 rcu_read_unlock();
506 return c;
507 }
508 }
509 rcu_read_unlock();
510
511 return NULL;
512 }
513
514 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
515 __u8 type, bdaddr_t *ba)
516 {
517 struct hci_conn_hash *h = &hdev->conn_hash;
518 struct hci_conn *c;
519
520 rcu_read_lock();
521
522 list_for_each_entry_rcu(c, &h->list, list) {
523 if (c->type == type && !bacmp(&c->dst, ba)) {
524 rcu_read_unlock();
525 return c;
526 }
527 }
528
529 rcu_read_unlock();
530
531 return NULL;
532 }
533
534 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
535 __u8 type, __u16 state)
536 {
537 struct hci_conn_hash *h = &hdev->conn_hash;
538 struct hci_conn *c;
539
540 rcu_read_lock();
541
542 list_for_each_entry_rcu(c, &h->list, list) {
543 if (c->type == type && c->state == state) {
544 rcu_read_unlock();
545 return c;
546 }
547 }
548
549 rcu_read_unlock();
550
551 return NULL;
552 }
553
554 void hci_acl_connect(struct hci_conn *conn);
555 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
556 void hci_add_sco(struct hci_conn *conn, __u16 handle);
557 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
558 void hci_sco_setup(struct hci_conn *conn, __u8 status);
559
560 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
561 int hci_conn_del(struct hci_conn *conn);
562 void hci_conn_hash_flush(struct hci_dev *hdev);
563 void hci_conn_check_pending(struct hci_dev *hdev);
564
565 struct hci_chan *hci_chan_create(struct hci_conn *conn);
566 int hci_chan_del(struct hci_chan *chan);
567 void hci_chan_list_flush(struct hci_conn *conn);
568
569 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
570 __u8 dst_type, __u8 sec_level, __u8 auth_type);
571 int hci_conn_check_link_mode(struct hci_conn *conn);
572 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
573 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
574 int hci_conn_change_link_key(struct hci_conn *conn);
575 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
576
577 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
578
579 void hci_conn_hold_device(struct hci_conn *conn);
580 void hci_conn_put_device(struct hci_conn *conn);
581
582 static inline void hci_conn_hold(struct hci_conn *conn)
583 {
584 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
585
586 atomic_inc(&conn->refcnt);
587 cancel_delayed_work(&conn->disc_work);
588 }
589
590 static inline void hci_conn_put(struct hci_conn *conn)
591 {
592 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
593
594 if (atomic_dec_and_test(&conn->refcnt)) {
595 unsigned long timeo;
596 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
597 del_timer(&conn->idle_timer);
598 if (conn->state == BT_CONNECTED) {
599 timeo = conn->disc_timeout;
600 if (!conn->out)
601 timeo *= 2;
602 } else {
603 timeo = msecs_to_jiffies(10);
604 }
605 } else {
606 timeo = msecs_to_jiffies(10);
607 }
608 cancel_delayed_work(&conn->disc_work);
609 queue_delayed_work(conn->hdev->workqueue,
610 &conn->disc_work, timeo);
611 }
612 }
613
614 /* ----- HCI Devices ----- */
615 static inline void hci_dev_put(struct hci_dev *d)
616 {
617 put_device(&d->dev);
618 }
619
620 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
621 {
622 get_device(&d->dev);
623 return d;
624 }
625
626 #define hci_dev_lock(d) mutex_lock(&d->lock)
627 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
628
629 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
630 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
631
632 static inline void *hci_get_drvdata(struct hci_dev *hdev)
633 {
634 return dev_get_drvdata(&hdev->dev);
635 }
636
637 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
638 {
639 dev_set_drvdata(&hdev->dev, data);
640 }
641
642 /* hci_dev_list shall be locked */
643 static inline uint8_t __hci_num_ctrl(void)
644 {
645 uint8_t count = 0;
646 struct list_head *p;
647
648 list_for_each(p, &hci_dev_list) {
649 count++;
650 }
651
652 return count;
653 }
654
655 struct hci_dev *hci_dev_get(int index);
656 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
657
658 struct hci_dev *hci_alloc_dev(void);
659 void hci_free_dev(struct hci_dev *hdev);
660 int hci_register_dev(struct hci_dev *hdev);
661 void hci_unregister_dev(struct hci_dev *hdev);
662 int hci_suspend_dev(struct hci_dev *hdev);
663 int hci_resume_dev(struct hci_dev *hdev);
664 int hci_dev_open(__u16 dev);
665 int hci_dev_close(__u16 dev);
666 int hci_dev_reset(__u16 dev);
667 int hci_dev_reset_stat(__u16 dev);
668 int hci_dev_cmd(unsigned int cmd, void __user *arg);
669 int hci_get_dev_list(void __user *arg);
670 int hci_get_dev_info(void __user *arg);
671 int hci_get_conn_list(void __user *arg);
672 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
673 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
674 int hci_inquiry(void __user *arg);
675
676 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
677 bdaddr_t *bdaddr);
678 int hci_blacklist_clear(struct hci_dev *hdev);
679 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
680 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
681
682 int hci_uuids_clear(struct hci_dev *hdev);
683
684 int hci_link_keys_clear(struct hci_dev *hdev);
685 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
686 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
687 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
688 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
689 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
690 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
691 __le16 ediv, u8 rand[8]);
692 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
693 u8 addr_type);
694 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
695 int hci_smp_ltks_clear(struct hci_dev *hdev);
696 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
697
698 int hci_remote_oob_data_clear(struct hci_dev *hdev);
699 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
700 bdaddr_t *bdaddr);
701 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
702 u8 *randomizer);
703 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
704
705 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
706
707 int hci_recv_frame(struct sk_buff *skb);
708 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
709 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
710
711 void hci_init_sysfs(struct hci_dev *hdev);
712 int hci_add_sysfs(struct hci_dev *hdev);
713 void hci_del_sysfs(struct hci_dev *hdev);
714 void hci_conn_init_sysfs(struct hci_conn *conn);
715 void hci_conn_add_sysfs(struct hci_conn *conn);
716 void hci_conn_del_sysfs(struct hci_conn *conn);
717
718 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
719
720 /* ----- LMP capabilities ----- */
721 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
722 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
723 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
724 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
725 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
726 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
727 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
728 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
729 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
730
731 /* ----- Extended LMP capabilities ----- */
732 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
733
734 /* ----- HCI protocols ----- */
735 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
736 __u8 type)
737 {
738 switch (type) {
739 case ACL_LINK:
740 return l2cap_connect_ind(hdev, bdaddr);
741
742 case SCO_LINK:
743 case ESCO_LINK:
744 return sco_connect_ind(hdev, bdaddr);
745
746 default:
747 BT_ERR("unknown link type %d", type);
748 return -EINVAL;
749 }
750 }
751
752 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
753 {
754 switch (conn->type) {
755 case ACL_LINK:
756 case LE_LINK:
757 l2cap_connect_cfm(conn, status);
758 break;
759
760 case SCO_LINK:
761 case ESCO_LINK:
762 sco_connect_cfm(conn, status);
763 break;
764
765 default:
766 BT_ERR("unknown link type %d", conn->type);
767 break;
768 }
769
770 if (conn->connect_cfm_cb)
771 conn->connect_cfm_cb(conn, status);
772 }
773
774 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
775 {
776 if (conn->type != ACL_LINK && conn->type != LE_LINK)
777 return HCI_ERROR_REMOTE_USER_TERM;
778
779 return l2cap_disconn_ind(conn);
780 }
781
782 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
783 {
784 switch (conn->type) {
785 case ACL_LINK:
786 case LE_LINK:
787 l2cap_disconn_cfm(conn, reason);
788 break;
789
790 case SCO_LINK:
791 case ESCO_LINK:
792 sco_disconn_cfm(conn, reason);
793 break;
794
795 default:
796 BT_ERR("unknown link type %d", conn->type);
797 break;
798 }
799
800 if (conn->disconn_cfm_cb)
801 conn->disconn_cfm_cb(conn, reason);
802 }
803
804 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
805 {
806 __u8 encrypt;
807
808 if (conn->type != ACL_LINK && conn->type != LE_LINK)
809 return;
810
811 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
812 return;
813
814 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
815 l2cap_security_cfm(conn, status, encrypt);
816
817 if (conn->security_cfm_cb)
818 conn->security_cfm_cb(conn, status);
819 }
820
821 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
822 __u8 encrypt)
823 {
824 if (conn->type != ACL_LINK && conn->type != LE_LINK)
825 return;
826
827 l2cap_security_cfm(conn, status, encrypt);
828
829 if (conn->security_cfm_cb)
830 conn->security_cfm_cb(conn, status);
831 }
832
833 /* ----- HCI callbacks ----- */
834 struct hci_cb {
835 struct list_head list;
836
837 char *name;
838
839 void (*security_cfm) (struct hci_conn *conn, __u8 status,
840 __u8 encrypt);
841 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
842 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
843 };
844
845 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
846 {
847 struct list_head *p;
848 __u8 encrypt;
849
850 hci_proto_auth_cfm(conn, status);
851
852 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
853 return;
854
855 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
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->security_cfm)
861 cb->security_cfm(conn, status, encrypt);
862 }
863 read_unlock(&hci_cb_list_lock);
864 }
865
866 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
867 __u8 encrypt)
868 {
869 struct list_head *p;
870
871 if (conn->sec_level == BT_SECURITY_SDP)
872 conn->sec_level = BT_SECURITY_LOW;
873
874 if (conn->pending_sec_level > conn->sec_level)
875 conn->sec_level = conn->pending_sec_level;
876
877 hci_proto_encrypt_cfm(conn, status, encrypt);
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->security_cfm)
883 cb->security_cfm(conn, status, encrypt);
884 }
885 read_unlock(&hci_cb_list_lock);
886 }
887
888 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
889 {
890 struct list_head *p;
891
892 read_lock(&hci_cb_list_lock);
893 list_for_each(p, &hci_cb_list) {
894 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
895 if (cb->key_change_cfm)
896 cb->key_change_cfm(conn, status);
897 }
898 read_unlock(&hci_cb_list_lock);
899 }
900
901 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
902 __u8 role)
903 {
904 struct list_head *p;
905
906 read_lock(&hci_cb_list_lock);
907 list_for_each(p, &hci_cb_list) {
908 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
909 if (cb->role_switch_cfm)
910 cb->role_switch_cfm(conn, status, role);
911 }
912 read_unlock(&hci_cb_list_lock);
913 }
914
915 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
916 {
917 size_t parsed = 0;
918
919 if (data_len < 2)
920 return false;
921
922 while (parsed < data_len - 1) {
923 u8 field_len = data[0];
924
925 if (field_len == 0)
926 break;
927
928 parsed += field_len + 1;
929
930 if (parsed > data_len)
931 break;
932
933 if (data[1] == type)
934 return true;
935
936 data += field_len + 1;
937 }
938
939 return false;
940 }
941
942 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
943 {
944 size_t parsed = 0;
945
946 while (parsed < eir_len) {
947 u8 field_len = eir[0];
948
949 if (field_len == 0)
950 return parsed;
951
952 parsed += field_len + 1;
953 eir += field_len + 1;
954 }
955
956 return eir_len;
957 }
958
959 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
960 u8 data_len)
961 {
962 eir[eir_len++] = sizeof(type) + data_len;
963 eir[eir_len++] = type;
964 memcpy(&eir[eir_len], data, data_len);
965 eir_len += data_len;
966
967 return eir_len;
968 }
969
970 int hci_register_cb(struct hci_cb *hcb);
971 int hci_unregister_cb(struct hci_cb *hcb);
972
973 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
974 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
975 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
976
977 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
978
979 /* ----- HCI Sockets ----- */
980 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
981 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
982 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
983
984 void hci_sock_dev_event(struct hci_dev *hdev, int event);
985
986 /* Management interface */
987 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
988 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
989 BIT(BDADDR_LE_RANDOM))
990 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
991 BIT(BDADDR_LE_PUBLIC) | \
992 BIT(BDADDR_LE_RANDOM))
993
994 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
995 int mgmt_index_added(struct hci_dev *hdev);
996 int mgmt_index_removed(struct hci_dev *hdev);
997 int mgmt_powered(struct hci_dev *hdev, u8 powered);
998 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
999 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1000 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1001 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1002 bool persistent);
1003 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1004 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1005 u8 *dev_class);
1006 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1007 u8 link_type, u8 addr_type);
1008 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1009 u8 link_type, u8 addr_type, u8 status);
1010 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1011 u8 addr_type, u8 status);
1012 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1013 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1014 u8 status);
1015 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1016 u8 status);
1017 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1018 u8 link_type, u8 addr_type, __le32 value,
1019 u8 confirm_hint);
1020 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1021 u8 link_type, u8 addr_type, u8 status);
1022 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1023 u8 link_type, u8 addr_type, u8 status);
1024 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1025 u8 link_type, u8 addr_type);
1026 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1027 u8 link_type, u8 addr_type, u8 status);
1028 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1029 u8 link_type, u8 addr_type, u8 status);
1030 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1031 u8 addr_type, u8 status);
1032 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1033 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1034 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1035 u8 status);
1036 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1037 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1038 u8 *randomizer, u8 status);
1039 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1040 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1041 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1042 u8 ssp, u8 *eir, u16 eir_len);
1043 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1044 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1045 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1046 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1047 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1048 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1049 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1050 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1051 bool mgmt_valid_hdev(struct hci_dev *hdev);
1052 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1053
1054 /* HCI info for socket */
1055 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1056
1057 struct hci_pinfo {
1058 struct bt_sock bt;
1059 struct hci_dev *hdev;
1060 struct hci_filter filter;
1061 __u32 cmsg_mask;
1062 unsigned short channel;
1063 };
1064
1065 /* HCI security filter */
1066 #define HCI_SFLT_MAX_OGF 5
1067
1068 struct hci_sec_filter {
1069 __u32 type_mask;
1070 __u32 event_mask[2];
1071 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1072 };
1073
1074 /* ----- HCI requests ----- */
1075 #define HCI_REQ_DONE 0
1076 #define HCI_REQ_PEND 1
1077 #define HCI_REQ_CANCELED 2
1078
1079 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1080 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1081
1082 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1083
1084 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1085 u16 latency, u16 to_multiplier);
1086 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1087 __u8 ltk[16]);
1088 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1089 int hci_cancel_inquiry(struct hci_dev *hdev);
1090 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1091 int timeout);
1092 int hci_cancel_le_scan(struct hci_dev *hdev);
1093
1094 u8 bdaddr_to_le(u8 bdaddr_type);
1095
1096 #endif /* __HCI_CORE_H */
Linux kernel - Deliverables
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