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[Bluetooth] Add automatic sniff mode support
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / net / bluetooth / hci_core.h
CommitLineData
1da177e4
LT		 1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
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
1da177e4
LT		 28#include <net/bluetooth/hci.h>
29
30/* HCI upper protocols */
31#define HCI_PROTO_L2CAP 0
32#define HCI_PROTO_SCO 1
33
1da177e4 34/* HCI Core structures */
1da177e4
LT		 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];
1ebb9252 41 __le16 clock_offset;
1da177e4
LT		 42 __s8 rssi;
43};
44
45struct inquiry_entry {
46 struct inquiry_entry *next;
47 __u32 timestamp;
48 struct inquiry_data data;
49};
50
51struct inquiry_cache {
52 spinlock_t lock;
53 __u32 timestamp;
54 struct inquiry_entry *list;
55};
56
57struct hci_conn_hash {
58 struct list_head list;
59 spinlock_t lock;
60 unsigned int acl_num;
61 unsigned int sco_num;
62};
63
64struct hci_dev {
65 struct list_head list;
66 spinlock_t lock;
67 atomic_t refcnt;
68
69 char name[8];
70 unsigned long flags;
71 __u16 id;
72 __u8 type;
73 bdaddr_t bdaddr;
74 __u8 features[8];
75 __u16 voice_setting;
76
77 __u16 pkt_type;
78 __u16 link_policy;
79 __u16 link_mode;
80
04837f64
MH		 81 __u32 idle_timeout;
82 __u16 sniff_min_interval;
83 __u16 sniff_max_interval;
84
1da177e4
LT		 85 unsigned long quirks;
86
87 atomic_t cmd_cnt;
88 unsigned int acl_cnt;
89 unsigned int sco_cnt;
90
91 unsigned int acl_mtu;
92 unsigned int sco_mtu;
93 unsigned int acl_pkts;
94 unsigned int sco_pkts;
95
96 unsigned long cmd_last_tx;
97 unsigned long acl_last_tx;
98 unsigned long sco_last_tx;
99
100 struct tasklet_struct cmd_task;
101 struct tasklet_struct rx_task;
102 struct tasklet_struct tx_task;
103
104 struct sk_buff_head rx_q;
105 struct sk_buff_head raw_q;
106 struct sk_buff_head cmd_q;
107
108 struct sk_buff *sent_cmd;
109
110 struct semaphore req_lock;
111 wait_queue_head_t req_wait_q;
112 __u32 req_status;
113 __u32 req_result;
114
115 struct inquiry_cache inq_cache;
116 struct hci_conn_hash conn_hash;
117
118 struct hci_dev_stats stat;
119
120 struct sk_buff_head driver_init;
121
122 void *driver_data;
123 void *core_data;
124
125 atomic_t promisc;
126
1da177e4
LT		 127 struct class_device class_dev;
128
129 struct module *owner;
130
131 int (*open)(struct hci_dev *hdev);
132 int (*close)(struct hci_dev *hdev);
133 int (*flush)(struct hci_dev *hdev);
134 int (*send)(struct sk_buff *skb);
135 void (*destruct)(struct hci_dev *hdev);
136 void (*notify)(struct hci_dev *hdev, unsigned int evt);
137 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
138};
139
140struct hci_conn {
141 struct list_head list;
142
143 atomic_t refcnt;
144 spinlock_t lock;
145
146 bdaddr_t dst;
147 __u16 handle;
148 __u16 state;
04837f64 149 __u8 mode;
1da177e4
LT		 150 __u8 type;
151 __u8 out;
152 __u8 dev_class[3];
04837f64
MH		 153 __u8 features[8];
154 __u16 interval;
155 __u16 link_policy;
1da177e4 156 __u32 link_mode;
04837f64 157 __u8 power_save;
1da177e4 158 unsigned long pend;
04837f64 159
1da177e4 160 unsigned int sent;
04837f64 161
1da177e4
LT		 162 struct sk_buff_head data_q;
163
04837f64
MH		 164 struct timer_list disc_timer;
165 struct timer_list idle_timer;
166
1da177e4
LT		 167 struct hci_dev *hdev;
168 void *l2cap_data;
169 void *sco_data;
170 void *priv;
171
172 struct hci_conn *link;
173};
174
175extern struct hci_proto *hci_proto[];
176extern struct list_head hci_dev_list;
177extern struct list_head hci_cb_list;
178extern rwlock_t hci_dev_list_lock;
179extern rwlock_t hci_cb_list_lock;
180
181/* ----- Inquiry cache ----- */
182#define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
183#define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
184
185#define inquiry_cache_lock(c) spin_lock(&c->lock)
186#define inquiry_cache_unlock(c) spin_unlock(&c->lock)
187#define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
188#define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
189
190static inline void inquiry_cache_init(struct hci_dev *hdev)
191{
192 struct inquiry_cache *c = &hdev->inq_cache;
193 spin_lock_init(&c->lock);
194 c->list = NULL;
195}
196
197static inline int inquiry_cache_empty(struct hci_dev *hdev)
198{
199 struct inquiry_cache *c = &hdev->inq_cache;
200 return (c->list == NULL);
201}
202
203static inline long inquiry_cache_age(struct hci_dev *hdev)
204{
205 struct inquiry_cache *c = &hdev->inq_cache;
206 return jiffies - c->timestamp;
207}
208
209static inline long inquiry_entry_age(struct inquiry_entry *e)
210{
211 return jiffies - e->timestamp;
212}
213
214struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
215void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
216
217/* ----- HCI Connections ----- */
218enum {
219 HCI_CONN_AUTH_PEND,
220 HCI_CONN_ENCRYPT_PEND,
04837f64
MH		 221 HCI_CONN_RSWITCH_PEND,
222 HCI_CONN_MODE_CHANGE_PEND,
1da177e4
LT		 223};
224
225static inline void hci_conn_hash_init(struct hci_dev *hdev)
226{
227 struct hci_conn_hash *h = &hdev->conn_hash;
228 INIT_LIST_HEAD(&h->list);
229 spin_lock_init(&h->lock);
230 h->acl_num = 0;
231 h->sco_num = 0;
232}
233
234static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
235{
236 struct hci_conn_hash *h = &hdev->conn_hash;
237 list_add(&c->list, &h->list);
238 if (c->type == ACL_LINK)
239 h->acl_num++;
240 else
241 h->sco_num++;
242}
243
244static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
245{
246 struct hci_conn_hash *h = &hdev->conn_hash;
247 list_del(&c->list);
248 if (c->type == ACL_LINK)
249 h->acl_num--;
250 else
251 h->sco_num--;
252}
253
254static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
255 __u16 handle)
256{
257 struct hci_conn_hash *h = &hdev->conn_hash;
258 struct list_head *p;
259 struct hci_conn *c;
260
261 list_for_each(p, &h->list) {
262 c = list_entry(p, struct hci_conn, list);
263 if (c->handle == handle)
264 return c;
265 }
266 return NULL;
267}
268
269static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
270 __u8 type, bdaddr_t *ba)
271{
272 struct hci_conn_hash *h = &hdev->conn_hash;
273 struct list_head *p;
274 struct hci_conn *c;
275
276 list_for_each(p, &h->list) {
277 c = list_entry(p, struct hci_conn, list);
278 if (c->type == type && !bacmp(&c->dst, ba))
279 return c;
280 }
281 return NULL;
282}
283
284void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
285void hci_add_sco(struct hci_conn *conn, __u16 handle);
286
287struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
288int hci_conn_del(struct hci_conn *conn);
289void hci_conn_hash_flush(struct hci_dev *hdev);
290
291struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
292int hci_conn_auth(struct hci_conn *conn);
293int hci_conn_encrypt(struct hci_conn *conn);
294int hci_conn_change_link_key(struct hci_conn *conn);
295int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
296
04837f64
MH		 297void hci_conn_enter_active_mode(struct hci_conn *conn);
298void hci_conn_enter_sniff_mode(struct hci_conn *conn);
1da177e4
LT		 299
300static inline void hci_conn_hold(struct hci_conn *conn)
301{
302 atomic_inc(&conn->refcnt);
04837f64 303 del_timer(&conn->disc_timer);
1da177e4
LT		 304}
305
306static inline void hci_conn_put(struct hci_conn *conn)
307{
308 if (atomic_dec_and_test(&conn->refcnt)) {
04837f64 309 unsigned long timeo;
1da177e4 310 if (conn->type == ACL_LINK) {
04837f64
MH		 311 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
312 if (!conn->out)
313 timeo *= 2;
314 del_timer(&conn->idle_timer);
1da177e4 315 } else
04837f64
MH		 316 timeo = msecs_to_jiffies(10);
317 mod_timer(&conn->disc_timer, jiffies + timeo);
1da177e4
LT		 318 }
319}
320
321/* ----- HCI tasks ----- */
322static inline void hci_sched_cmd(struct hci_dev *hdev)
323{
324 tasklet_schedule(&hdev->cmd_task);
325}
326
327static inline void hci_sched_rx(struct hci_dev *hdev)
328{
329 tasklet_schedule(&hdev->rx_task);
330}
331
332static inline void hci_sched_tx(struct hci_dev *hdev)
333{
334 tasklet_schedule(&hdev->tx_task);
335}
336
337/* ----- HCI Devices ----- */
338static inline void __hci_dev_put(struct hci_dev *d)
339{
340 if (atomic_dec_and_test(&d->refcnt))
341 d->destruct(d);
342}
343
344static inline void hci_dev_put(struct hci_dev *d)
345{
346 __hci_dev_put(d);
347 module_put(d->owner);
348}
349
350static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
351{
352 atomic_inc(&d->refcnt);
353 return d;
354}
355
356static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
357{
358 if (try_module_get(d->owner))
359 return __hci_dev_hold(d);
360 return NULL;
361}
362
363#define hci_dev_lock(d) spin_lock(&d->lock)
364#define hci_dev_unlock(d) spin_unlock(&d->lock)
365#define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
366#define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
367
368struct hci_dev *hci_dev_get(int index);
369struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
370
371struct hci_dev *hci_alloc_dev(void);
372void hci_free_dev(struct hci_dev *hdev);
373int hci_register_dev(struct hci_dev *hdev);
374int hci_unregister_dev(struct hci_dev *hdev);
375int hci_suspend_dev(struct hci_dev *hdev);
376int hci_resume_dev(struct hci_dev *hdev);
377int hci_dev_open(__u16 dev);
378int hci_dev_close(__u16 dev);
379int hci_dev_reset(__u16 dev);
380int hci_dev_reset_stat(__u16 dev);
381int hci_dev_cmd(unsigned int cmd, void __user *arg);
382int hci_get_dev_list(void __user *arg);
383int hci_get_dev_info(void __user *arg);
384int hci_get_conn_list(void __user *arg);
385int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
386int hci_inquiry(void __user *arg);
387
388void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
389
390/* Receive frame from HCI drivers */
391static inline int hci_recv_frame(struct sk_buff *skb)
392{
393 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
394 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
395 && !test_bit(HCI_INIT, &hdev->flags))) {
396 kfree_skb(skb);
397 return -ENXIO;
398 }
399
400 /* Incomming skb */
401 bt_cb(skb)->incoming = 1;
402
403 /* Time stamp */
a61bbcf2 404 __net_timestamp(skb);
1da177e4
LT		 405
406 /* Queue frame for rx task */
407 skb_queue_tail(&hdev->rx_q, skb);
408 hci_sched_rx(hdev);
409 return 0;
410}
411
412int hci_register_sysfs(struct hci_dev *hdev);
413void hci_unregister_sysfs(struct hci_dev *hdev);
414
415#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev))
416
417/* ----- LMP capabilities ----- */
04837f64
MH		 418#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
419#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
420#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
421#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
1da177e4
LT		 422
423/* ----- HCI protocols ----- */
424struct hci_proto {
425 char *name;
426 unsigned int id;
427 unsigned long flags;
428
429 void *priv;
430
431 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
432 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
433 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
434 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
435 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
436 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
437 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
438};
439
440static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
441{
442 register struct hci_proto *hp;
443 int mask = 0;
444
445 hp = hci_proto[HCI_PROTO_L2CAP];
446 if (hp && hp->connect_ind)
447 mask |= hp->connect_ind(hdev, bdaddr, type);
448
449 hp = hci_proto[HCI_PROTO_SCO];
450 if (hp && hp->connect_ind)
451 mask |= hp->connect_ind(hdev, bdaddr, type);
452
453 return mask;
454}
455
456static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
457{
458 register struct hci_proto *hp;
459
460 hp = hci_proto[HCI_PROTO_L2CAP];
461 if (hp && hp->connect_cfm)
462 hp->connect_cfm(conn, status);
463
464 hp = hci_proto[HCI_PROTO_SCO];
465 if (hp && hp->connect_cfm)
466 hp->connect_cfm(conn, status);
467}
468
469static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
470{
471 register struct hci_proto *hp;
472
473 hp = hci_proto[HCI_PROTO_L2CAP];
474 if (hp && hp->disconn_ind)
475 hp->disconn_ind(conn, reason);
476
477 hp = hci_proto[HCI_PROTO_SCO];
478 if (hp && hp->disconn_ind)
479 hp->disconn_ind(conn, reason);
480}
481
482static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
483{
484 register struct hci_proto *hp;
485
486 hp = hci_proto[HCI_PROTO_L2CAP];
487 if (hp && hp->auth_cfm)
488 hp->auth_cfm(conn, status);
489
490 hp = hci_proto[HCI_PROTO_SCO];
491 if (hp && hp->auth_cfm)
492 hp->auth_cfm(conn, status);
493}
494
495static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
496{
497 register struct hci_proto *hp;
498
499 hp = hci_proto[HCI_PROTO_L2CAP];
500 if (hp && hp->encrypt_cfm)
501 hp->encrypt_cfm(conn, status);
502
503 hp = hci_proto[HCI_PROTO_SCO];
504 if (hp && hp->encrypt_cfm)
505 hp->encrypt_cfm(conn, status);
506}
507
508int hci_register_proto(struct hci_proto *hproto);
509int hci_unregister_proto(struct hci_proto *hproto);
510
511/* ----- HCI callbacks ----- */
512struct hci_cb {
513 struct list_head list;
514
515 char *name;
516
517 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
518 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
519 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
520 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
521};
522
523static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
524{
525 struct list_head *p;
526
527 hci_proto_auth_cfm(conn, status);
528
529 read_lock_bh(&hci_cb_list_lock);
530 list_for_each(p, &hci_cb_list) {
531 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
532 if (cb->auth_cfm)
533 cb->auth_cfm(conn, status);
534 }
535 read_unlock_bh(&hci_cb_list_lock);
536}
537
538static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
539{
540 struct list_head *p;
541
542 hci_proto_encrypt_cfm(conn, status);
543
544 read_lock_bh(&hci_cb_list_lock);
545 list_for_each(p, &hci_cb_list) {
546 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
547 if (cb->encrypt_cfm)
548 cb->encrypt_cfm(conn, status, encrypt);
549 }
550 read_unlock_bh(&hci_cb_list_lock);
551}
552
553static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
554{
555 struct list_head *p;
556
557 read_lock_bh(&hci_cb_list_lock);
558 list_for_each(p, &hci_cb_list) {
559 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
560 if (cb->key_change_cfm)
561 cb->key_change_cfm(conn, status);
562 }
563 read_unlock_bh(&hci_cb_list_lock);
564}
565
566static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
567{
568 struct list_head *p;
569
570 read_lock_bh(&hci_cb_list_lock);
571 list_for_each(p, &hci_cb_list) {
572 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
573 if (cb->role_switch_cfm)
574 cb->role_switch_cfm(conn, status, role);
575 }
576 read_unlock_bh(&hci_cb_list_lock);
577}
578
579int hci_register_cb(struct hci_cb *hcb);
580int hci_unregister_cb(struct hci_cb *hcb);
581
582int hci_register_notifier(struct notifier_block *nb);
583int hci_unregister_notifier(struct notifier_block *nb);
584
585int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
586int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
587int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
588
589void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
590
591void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
592
593/* ----- HCI Sockets ----- */
594void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
595
596/* HCI info for socket */
597#define hci_pi(sk) ((struct hci_pinfo *) sk)
598
599struct hci_pinfo {
600 struct bt_sock bt;
601 struct hci_dev *hdev;
602 struct hci_filter filter;
603 __u32 cmsg_mask;
604};
605
606/* HCI security filter */
607#define HCI_SFLT_MAX_OGF 5
608
609struct hci_sec_filter {
610 __u32 type_mask;
611 __u32 event_mask[2];
612 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
613};
614
615/* ----- HCI requests ----- */
616#define HCI_REQ_DONE 0
617#define HCI_REQ_PEND 1
618#define HCI_REQ_CANCELED 2
619
620#define hci_req_lock(d) down(&d->req_lock)
621#define hci_req_unlock(d) up(&d->req_lock)
622
623void hci_req_complete(struct hci_dev *hdev, int result);
624
625#endif /* __HCI_CORE_H */
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