Bluetooth: Move hci_amp_capable() function into L2CAP core
[linux-2.6-block.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     amp_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 size;
90         u8 svc_hint;
91 };
92
93 struct smp_ltk {
94         struct list_head list;
95         bdaddr_t bdaddr;
96         u8 bdaddr_type;
97         u8 authenticated;
98         u8 type;
99         u8 enc_size;
100         __le16 ediv;
101         u8 rand[8];
102         u8 val[16];
103 } __packed;
104
105 struct link_key {
106         struct list_head list;
107         bdaddr_t bdaddr;
108         u8 type;
109         u8 val[HCI_LINK_KEY_SIZE];
110         u8 pin_len;
111 };
112
113 struct oob_data {
114         struct list_head list;
115         bdaddr_t bdaddr;
116         u8 hash[16];
117         u8 randomizer[16];
118 };
119
120 #define HCI_MAX_SHORT_NAME_LENGTH       10
121
122 struct amp_assoc {
123         __u16   len;
124         __u16   offset;
125         __u16   rem_len;
126         __u16   len_so_far;
127         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
128 };
129
130 #define HCI_MAX_PAGES   3
131
132 #define NUM_REASSEMBLY 4
133 struct hci_dev {
134         struct list_head list;
135         struct mutex    lock;
136
137         char            name[8];
138         unsigned long   flags;
139         __u16           id;
140         __u8            bus;
141         __u8            dev_type;
142         bdaddr_t        bdaddr;
143         bdaddr_t        static_addr;
144         __u8            dev_name[HCI_MAX_NAME_LENGTH];
145         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
146         __u8            eir[HCI_MAX_EIR_LENGTH];
147         __u8            dev_class[3];
148         __u8            major_class;
149         __u8            minor_class;
150         __u8            max_page;
151         __u8            features[HCI_MAX_PAGES][8];
152         __u8            le_features[8];
153         __u8            le_white_list_size;
154         __u8            le_states[8];
155         __u8            commands[64];
156         __u8            hci_ver;
157         __u16           hci_rev;
158         __u8            lmp_ver;
159         __u16           manufacturer;
160         __u16           lmp_subver;
161         __u16           voice_setting;
162         __u8            io_capability;
163         __s8            inq_tx_power;
164         __u16           page_scan_interval;
165         __u16           page_scan_window;
166         __u8            page_scan_type;
167
168         __u16           devid_source;
169         __u16           devid_vendor;
170         __u16           devid_product;
171         __u16           devid_version;
172
173         __u16           pkt_type;
174         __u16           esco_type;
175         __u16           link_policy;
176         __u16           link_mode;
177
178         __u32           idle_timeout;
179         __u16           sniff_min_interval;
180         __u16           sniff_max_interval;
181
182         __u8            amp_status;
183         __u32           amp_total_bw;
184         __u32           amp_max_bw;
185         __u32           amp_min_latency;
186         __u32           amp_max_pdu;
187         __u8            amp_type;
188         __u16           amp_pal_cap;
189         __u16           amp_assoc_size;
190         __u32           amp_max_flush_to;
191         __u32           amp_be_flush_to;
192
193         struct amp_assoc        loc_assoc;
194
195         __u8            flow_ctl_mode;
196
197         unsigned int    auto_accept_delay;
198
199         unsigned long   quirks;
200
201         atomic_t        cmd_cnt;
202         unsigned int    acl_cnt;
203         unsigned int    sco_cnt;
204         unsigned int    le_cnt;
205
206         unsigned int    acl_mtu;
207         unsigned int    sco_mtu;
208         unsigned int    le_mtu;
209         unsigned int    acl_pkts;
210         unsigned int    sco_pkts;
211         unsigned int    le_pkts;
212
213         __u16           block_len;
214         __u16           block_mtu;
215         __u16           num_blocks;
216         __u16           block_cnt;
217
218         unsigned long   acl_last_tx;
219         unsigned long   sco_last_tx;
220         unsigned long   le_last_tx;
221
222         struct workqueue_struct *workqueue;
223         struct workqueue_struct *req_workqueue;
224
225         struct work_struct      power_on;
226         struct delayed_work     power_off;
227
228         __u16                   discov_timeout;
229         struct delayed_work     discov_off;
230
231         struct delayed_work     service_cache;
232
233         struct timer_list       cmd_timer;
234
235         struct work_struct      rx_work;
236         struct work_struct      cmd_work;
237         struct work_struct      tx_work;
238
239         struct sk_buff_head     rx_q;
240         struct sk_buff_head     raw_q;
241         struct sk_buff_head     cmd_q;
242
243         struct sk_buff          *recv_evt;
244         struct sk_buff          *sent_cmd;
245         struct sk_buff          *reassembly[NUM_REASSEMBLY];
246
247         struct mutex            req_lock;
248         wait_queue_head_t       req_wait_q;
249         __u32                   req_status;
250         __u32                   req_result;
251
252         struct list_head        mgmt_pending;
253
254         struct discovery_state  discovery;
255         struct hci_conn_hash    conn_hash;
256         struct list_head        blacklist;
257
258         struct list_head        uuids;
259
260         struct list_head        link_keys;
261
262         struct list_head        long_term_keys;
263
264         struct list_head        remote_oob_data;
265
266         struct hci_dev_stats    stat;
267
268         atomic_t                promisc;
269
270         struct dentry           *debugfs;
271
272         struct device           dev;
273
274         struct rfkill           *rfkill;
275
276         unsigned long           dev_flags;
277
278         struct delayed_work     le_scan_disable;
279
280         __s8                    adv_tx_power;
281         __u8                    adv_data[HCI_MAX_AD_LENGTH];
282         __u8                    adv_data_len;
283
284         int (*open)(struct hci_dev *hdev);
285         int (*close)(struct hci_dev *hdev);
286         int (*flush)(struct hci_dev *hdev);
287         int (*setup)(struct hci_dev *hdev);
288         int (*send)(struct sk_buff *skb);
289         void (*notify)(struct hci_dev *hdev, unsigned int evt);
290         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
291 };
292
293 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
294
295 struct hci_conn {
296         struct list_head list;
297
298         atomic_t        refcnt;
299
300         bdaddr_t        dst;
301         __u8            dst_type;
302         __u16           handle;
303         __u16           state;
304         __u8            mode;
305         __u8            type;
306         bool            out;
307         __u8            attempt;
308         __u8            dev_class[3];
309         __u8            features[HCI_MAX_PAGES][8];
310         __u16           interval;
311         __u16           pkt_type;
312         __u16           link_policy;
313         __u32           link_mode;
314         __u8            key_type;
315         __u8            auth_type;
316         __u8            sec_level;
317         __u8            pending_sec_level;
318         __u8            pin_length;
319         __u8            enc_key_size;
320         __u8            io_capability;
321         __u32           passkey_notify;
322         __u8            passkey_entered;
323         __u16           disc_timeout;
324         __u16           setting;
325         unsigned long   flags;
326
327         __u8            remote_cap;
328         __u8            remote_auth;
329         __u8            remote_id;
330         bool            flush_key;
331
332         unsigned int    sent;
333
334         struct sk_buff_head data_q;
335         struct list_head chan_list;
336
337         struct delayed_work disc_work;
338         struct timer_list idle_timer;
339         struct timer_list auto_accept_timer;
340
341         struct device   dev;
342
343         struct hci_dev  *hdev;
344         void            *l2cap_data;
345         void            *sco_data;
346         void            *smp_conn;
347         struct amp_mgr  *amp_mgr;
348
349         struct hci_conn *link;
350
351         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
352         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
353         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
354 };
355
356 struct hci_chan {
357         struct list_head list;
358         __u16 handle;
359         struct hci_conn *conn;
360         struct sk_buff_head data_q;
361         unsigned int    sent;
362         __u8            state;
363 };
364
365 extern struct list_head hci_dev_list;
366 extern struct list_head hci_cb_list;
367 extern rwlock_t hci_dev_list_lock;
368 extern rwlock_t hci_cb_list_lock;
369
370 /* ----- HCI interface to upper protocols ----- */
371 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
372 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
373 extern int l2cap_disconn_ind(struct hci_conn *hcon);
374 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
375 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
376 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
377                               u16 flags);
378
379 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
380 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
381 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
382 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
383
384 /* ----- Inquiry cache ----- */
385 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
386 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
387
388 static inline void discovery_init(struct hci_dev *hdev)
389 {
390         hdev->discovery.state = DISCOVERY_STOPPED;
391         INIT_LIST_HEAD(&hdev->discovery.all);
392         INIT_LIST_HEAD(&hdev->discovery.unknown);
393         INIT_LIST_HEAD(&hdev->discovery.resolve);
394 }
395
396 bool hci_discovery_active(struct hci_dev *hdev);
397
398 void hci_discovery_set_state(struct hci_dev *hdev, int state);
399
400 static inline int inquiry_cache_empty(struct hci_dev *hdev)
401 {
402         return list_empty(&hdev->discovery.all);
403 }
404
405 static inline long inquiry_cache_age(struct hci_dev *hdev)
406 {
407         struct discovery_state *c = &hdev->discovery;
408         return jiffies - c->timestamp;
409 }
410
411 static inline long inquiry_entry_age(struct inquiry_entry *e)
412 {
413         return jiffies - e->timestamp;
414 }
415
416 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
417                                                bdaddr_t *bdaddr);
418 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
419                                                        bdaddr_t *bdaddr);
420 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
421                                                        bdaddr_t *bdaddr,
422                                                        int state);
423 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
424                                       struct inquiry_entry *ie);
425 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
426                               bool name_known, bool *ssp);
427 void hci_inquiry_cache_flush(struct hci_dev *hdev);
428
429 /* ----- HCI Connections ----- */
430 enum {
431         HCI_CONN_AUTH_PEND,
432         HCI_CONN_REAUTH_PEND,
433         HCI_CONN_ENCRYPT_PEND,
434         HCI_CONN_RSWITCH_PEND,
435         HCI_CONN_MODE_CHANGE_PEND,
436         HCI_CONN_SCO_SETUP_PEND,
437         HCI_CONN_LE_SMP_PEND,
438         HCI_CONN_MGMT_CONNECTED,
439         HCI_CONN_SSP_ENABLED,
440         HCI_CONN_POWER_SAVE,
441         HCI_CONN_REMOTE_OOB,
442 };
443
444 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
445 {
446         struct hci_dev *hdev = conn->hdev;
447         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
448                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
449 }
450
451 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
452 {
453         struct hci_conn_hash *h = &hdev->conn_hash;
454         list_add_rcu(&c->list, &h->list);
455         switch (c->type) {
456         case ACL_LINK:
457                 h->acl_num++;
458                 break;
459         case AMP_LINK:
460                 h->amp_num++;
461                 break;
462         case LE_LINK:
463                 h->le_num++;
464                 break;
465         case SCO_LINK:
466         case ESCO_LINK:
467                 h->sco_num++;
468                 break;
469         }
470 }
471
472 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
473 {
474         struct hci_conn_hash *h = &hdev->conn_hash;
475
476         list_del_rcu(&c->list);
477         synchronize_rcu();
478
479         switch (c->type) {
480         case ACL_LINK:
481                 h->acl_num--;
482                 break;
483         case AMP_LINK:
484                 h->amp_num--;
485                 break;
486         case LE_LINK:
487                 h->le_num--;
488                 break;
489         case SCO_LINK:
490         case ESCO_LINK:
491                 h->sco_num--;
492                 break;
493         }
494 }
495
496 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
497 {
498         struct hci_conn_hash *h = &hdev->conn_hash;
499         switch (type) {
500         case ACL_LINK:
501                 return h->acl_num;
502         case AMP_LINK:
503                 return h->amp_num;
504         case LE_LINK:
505                 return h->le_num;
506         case SCO_LINK:
507         case ESCO_LINK:
508                 return h->sco_num;
509         default:
510                 return 0;
511         }
512 }
513
514 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
515                                                                 __u16 handle)
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->handle == handle) {
524                         rcu_read_unlock();
525                         return c;
526                 }
527         }
528         rcu_read_unlock();
529
530         return NULL;
531 }
532
533 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
534                                                         __u8 type, bdaddr_t *ba)
535 {
536         struct hci_conn_hash *h = &hdev->conn_hash;
537         struct hci_conn  *c;
538
539         rcu_read_lock();
540
541         list_for_each_entry_rcu(c, &h->list, list) {
542                 if (c->type == type && !bacmp(&c->dst, ba)) {
543                         rcu_read_unlock();
544                         return c;
545                 }
546         }
547
548         rcu_read_unlock();
549
550         return NULL;
551 }
552
553 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
554                                                         __u8 type, __u16 state)
555 {
556         struct hci_conn_hash *h = &hdev->conn_hash;
557         struct hci_conn  *c;
558
559         rcu_read_lock();
560
561         list_for_each_entry_rcu(c, &h->list, list) {
562                 if (c->type == type && c->state == state) {
563                         rcu_read_unlock();
564                         return c;
565                 }
566         }
567
568         rcu_read_unlock();
569
570         return NULL;
571 }
572
573 void hci_disconnect(struct hci_conn *conn, __u8 reason);
574 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
575 void hci_sco_setup(struct hci_conn *conn, __u8 status);
576
577 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
578 int hci_conn_del(struct hci_conn *conn);
579 void hci_conn_hash_flush(struct hci_dev *hdev);
580 void hci_conn_check_pending(struct hci_dev *hdev);
581
582 struct hci_chan *hci_chan_create(struct hci_conn *conn);
583 void hci_chan_del(struct hci_chan *chan);
584 void hci_chan_list_flush(struct hci_conn *conn);
585 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
586
587 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
588                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
589 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
590                                  __u16 setting);
591 int hci_conn_check_link_mode(struct hci_conn *conn);
592 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
593 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
594 int hci_conn_change_link_key(struct hci_conn *conn);
595 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
596
597 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
598
599 /*
600  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
601  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
602  * working or anything else. They just guarantee that the object is available
603  * and can be dereferenced. So you can use its locks, local variables and any
604  * other constant data.
605  * Before accessing runtime data, you _must_ lock the object and then check that
606  * it is still running. As soon as you release the locks, the connection might
607  * get dropped, though.
608  *
609  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
610  * how long the underlying connection is held. So every channel that runs on the
611  * hci_conn object calls this to prevent the connection from disappearing. As
612  * long as you hold a device, you must also guarantee that you have a valid
613  * reference to the device via hci_conn_get() (or the initial reference from
614  * hci_conn_add()).
615  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
616  * break because nobody cares for that. But this means, we cannot use
617  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
618  */
619
620 static inline void hci_conn_get(struct hci_conn *conn)
621 {
622         get_device(&conn->dev);
623 }
624
625 static inline void hci_conn_put(struct hci_conn *conn)
626 {
627         put_device(&conn->dev);
628 }
629
630 static inline void hci_conn_hold(struct hci_conn *conn)
631 {
632         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
633
634         atomic_inc(&conn->refcnt);
635         cancel_delayed_work(&conn->disc_work);
636 }
637
638 static inline void hci_conn_drop(struct hci_conn *conn)
639 {
640         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
641
642         if (atomic_dec_and_test(&conn->refcnt)) {
643                 unsigned long timeo;
644
645                 switch (conn->type) {
646                 case ACL_LINK:
647                 case LE_LINK:
648                         del_timer(&conn->idle_timer);
649                         if (conn->state == BT_CONNECTED) {
650                                 timeo = conn->disc_timeout;
651                                 if (!conn->out)
652                                         timeo *= 2;
653                         } else {
654                                 timeo = msecs_to_jiffies(10);
655                         }
656                         break;
657
658                 case AMP_LINK:
659                         timeo = conn->disc_timeout;
660                         break;
661
662                 default:
663                         timeo = msecs_to_jiffies(10);
664                         break;
665                 }
666
667                 cancel_delayed_work(&conn->disc_work);
668                 queue_delayed_work(conn->hdev->workqueue,
669                                    &conn->disc_work, timeo);
670         }
671 }
672
673 /* ----- HCI Devices ----- */
674 static inline void hci_dev_put(struct hci_dev *d)
675 {
676         BT_DBG("%s orig refcnt %d", d->name,
677                atomic_read(&d->dev.kobj.kref.refcount));
678
679         put_device(&d->dev);
680 }
681
682 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
683 {
684         BT_DBG("%s orig refcnt %d", d->name,
685                atomic_read(&d->dev.kobj.kref.refcount));
686
687         get_device(&d->dev);
688         return d;
689 }
690
691 #define hci_dev_lock(d)         mutex_lock(&d->lock)
692 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
693
694 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
695 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
696
697 static inline void *hci_get_drvdata(struct hci_dev *hdev)
698 {
699         return dev_get_drvdata(&hdev->dev);
700 }
701
702 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
703 {
704         dev_set_drvdata(&hdev->dev, data);
705 }
706
707 struct hci_dev *hci_dev_get(int index);
708 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
709
710 struct hci_dev *hci_alloc_dev(void);
711 void hci_free_dev(struct hci_dev *hdev);
712 int hci_register_dev(struct hci_dev *hdev);
713 void hci_unregister_dev(struct hci_dev *hdev);
714 int hci_suspend_dev(struct hci_dev *hdev);
715 int hci_resume_dev(struct hci_dev *hdev);
716 int hci_dev_open(__u16 dev);
717 int hci_dev_close(__u16 dev);
718 int hci_dev_reset(__u16 dev);
719 int hci_dev_reset_stat(__u16 dev);
720 int hci_dev_cmd(unsigned int cmd, void __user *arg);
721 int hci_get_dev_list(void __user *arg);
722 int hci_get_dev_info(void __user *arg);
723 int hci_get_conn_list(void __user *arg);
724 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
725 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
726 int hci_inquiry(void __user *arg);
727
728 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
729                                          bdaddr_t *bdaddr);
730 int hci_blacklist_clear(struct hci_dev *hdev);
731 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
732 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
733
734 int hci_uuids_clear(struct hci_dev *hdev);
735
736 int hci_link_keys_clear(struct hci_dev *hdev);
737 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
738 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
739                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
740 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
741 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
742                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
743                 __le16 ediv, u8 rand[8]);
744 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
745                                      u8 addr_type);
746 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
747 int hci_smp_ltks_clear(struct hci_dev *hdev);
748 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
749
750 int hci_remote_oob_data_clear(struct hci_dev *hdev);
751 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
752                                                         bdaddr_t *bdaddr);
753 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
754                                                                 u8 *randomizer);
755 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
756
757 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
758
759 int hci_recv_frame(struct sk_buff *skb);
760 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
761 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
762
763 void hci_init_sysfs(struct hci_dev *hdev);
764 int hci_add_sysfs(struct hci_dev *hdev);
765 void hci_del_sysfs(struct hci_dev *hdev);
766 void hci_conn_init_sysfs(struct hci_conn *conn);
767 void hci_conn_add_sysfs(struct hci_conn *conn);
768 void hci_conn_del_sysfs(struct hci_conn *conn);
769
770 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
771
772 /* ----- LMP capabilities ----- */
773 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
774 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
775 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
776 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
777 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
778 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
779 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
780 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
781 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
782 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
783 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
784 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
785 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
786 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
787 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
788 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
789 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
790 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
791 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
792
793 /* ----- Extended LMP capabilities ----- */
794 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
795 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
796 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
797
798 /* ----- HCI protocols ----- */
799 #define HCI_PROTO_DEFER             0x01
800
801 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
802                                         __u8 type, __u8 *flags)
803 {
804         switch (type) {
805         case ACL_LINK:
806                 return l2cap_connect_ind(hdev, bdaddr);
807
808         case SCO_LINK:
809         case ESCO_LINK:
810                 return sco_connect_ind(hdev, bdaddr, flags);
811
812         default:
813                 BT_ERR("unknown link type %d", type);
814                 return -EINVAL;
815         }
816 }
817
818 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
819 {
820         switch (conn->type) {
821         case ACL_LINK:
822         case LE_LINK:
823                 l2cap_connect_cfm(conn, status);
824                 break;
825
826         case SCO_LINK:
827         case ESCO_LINK:
828                 sco_connect_cfm(conn, status);
829                 break;
830
831         default:
832                 BT_ERR("unknown link type %d", conn->type);
833                 break;
834         }
835
836         if (conn->connect_cfm_cb)
837                 conn->connect_cfm_cb(conn, status);
838 }
839
840 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
841 {
842         if (conn->type != ACL_LINK && conn->type != LE_LINK)
843                 return HCI_ERROR_REMOTE_USER_TERM;
844
845         return l2cap_disconn_ind(conn);
846 }
847
848 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
849 {
850         switch (conn->type) {
851         case ACL_LINK:
852         case LE_LINK:
853                 l2cap_disconn_cfm(conn, reason);
854                 break;
855
856         case SCO_LINK:
857         case ESCO_LINK:
858                 sco_disconn_cfm(conn, reason);
859                 break;
860
861         /* L2CAP would be handled for BREDR chan */
862         case AMP_LINK:
863                 break;
864
865         default:
866                 BT_ERR("unknown link type %d", conn->type);
867                 break;
868         }
869
870         if (conn->disconn_cfm_cb)
871                 conn->disconn_cfm_cb(conn, reason);
872 }
873
874 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
875 {
876         __u8 encrypt;
877
878         if (conn->type != ACL_LINK && conn->type != LE_LINK)
879                 return;
880
881         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
882                 return;
883
884         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
885         l2cap_security_cfm(conn, status, encrypt);
886
887         if (conn->security_cfm_cb)
888                 conn->security_cfm_cb(conn, status);
889 }
890
891 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
892                                                                 __u8 encrypt)
893 {
894         if (conn->type != ACL_LINK && conn->type != LE_LINK)
895                 return;
896
897         l2cap_security_cfm(conn, status, encrypt);
898
899         if (conn->security_cfm_cb)
900                 conn->security_cfm_cb(conn, status);
901 }
902
903 /* ----- HCI callbacks ----- */
904 struct hci_cb {
905         struct list_head list;
906
907         char *name;
908
909         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
910                                                                 __u8 encrypt);
911         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
912         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
913 };
914
915 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
916 {
917         struct hci_cb *cb;
918         __u8 encrypt;
919
920         hci_proto_auth_cfm(conn, status);
921
922         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
923                 return;
924
925         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
926
927         read_lock(&hci_cb_list_lock);
928         list_for_each_entry(cb, &hci_cb_list, list) {
929                 if (cb->security_cfm)
930                         cb->security_cfm(conn, status, encrypt);
931         }
932         read_unlock(&hci_cb_list_lock);
933 }
934
935 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
936                                                                 __u8 encrypt)
937 {
938         struct hci_cb *cb;
939
940         if (conn->sec_level == BT_SECURITY_SDP)
941                 conn->sec_level = BT_SECURITY_LOW;
942
943         if (conn->pending_sec_level > conn->sec_level)
944                 conn->sec_level = conn->pending_sec_level;
945
946         hci_proto_encrypt_cfm(conn, status, encrypt);
947
948         read_lock(&hci_cb_list_lock);
949         list_for_each_entry(cb, &hci_cb_list, list) {
950                 if (cb->security_cfm)
951                         cb->security_cfm(conn, status, encrypt);
952         }
953         read_unlock(&hci_cb_list_lock);
954 }
955
956 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
957 {
958         struct hci_cb *cb;
959
960         read_lock(&hci_cb_list_lock);
961         list_for_each_entry(cb, &hci_cb_list, list) {
962                 if (cb->key_change_cfm)
963                         cb->key_change_cfm(conn, status);
964         }
965         read_unlock(&hci_cb_list_lock);
966 }
967
968 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
969                                                                 __u8 role)
970 {
971         struct hci_cb *cb;
972
973         read_lock(&hci_cb_list_lock);
974         list_for_each_entry(cb, &hci_cb_list, list) {
975                 if (cb->role_switch_cfm)
976                         cb->role_switch_cfm(conn, status, role);
977         }
978         read_unlock(&hci_cb_list_lock);
979 }
980
981 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
982 {
983         size_t parsed = 0;
984
985         if (data_len < 2)
986                 return false;
987
988         while (parsed < data_len - 1) {
989                 u8 field_len = data[0];
990
991                 if (field_len == 0)
992                         break;
993
994                 parsed += field_len + 1;
995
996                 if (parsed > data_len)
997                         break;
998
999                 if (data[1] == type)
1000                         return true;
1001
1002                 data += field_len + 1;
1003         }
1004
1005         return false;
1006 }
1007
1008 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1009 {
1010         size_t parsed = 0;
1011
1012         while (parsed < eir_len) {
1013                 u8 field_len = eir[0];
1014
1015                 if (field_len == 0)
1016                         return parsed;
1017
1018                 parsed += field_len + 1;
1019                 eir += field_len + 1;
1020         }
1021
1022         return eir_len;
1023 }
1024
1025 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1026                                   u8 data_len)
1027 {
1028         eir[eir_len++] = sizeof(type) + data_len;
1029         eir[eir_len++] = type;
1030         memcpy(&eir[eir_len], data, data_len);
1031         eir_len += data_len;
1032
1033         return eir_len;
1034 }
1035
1036 int hci_register_cb(struct hci_cb *hcb);
1037 int hci_unregister_cb(struct hci_cb *hcb);
1038
1039 struct hci_request {
1040         struct hci_dev          *hdev;
1041         struct sk_buff_head     cmd_q;
1042
1043         /* If something goes wrong when building the HCI request, the error
1044          * value is stored in this field.
1045          */
1046         int                     err;
1047 };
1048
1049 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1050 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1051 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1052                  const void *param);
1053 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1054                     const void *param, u8 event);
1055 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1056
1057 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1058                                const void *param, u32 timeout);
1059 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1060                                   const void *param, u8 event, u32 timeout);
1061
1062 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1063                  const void *param);
1064 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1065 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1066
1067 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1068
1069 /* ----- HCI Sockets ----- */
1070 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1071 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1072 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1073
1074 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1075
1076 /* Management interface */
1077 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1078 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1079                                          BIT(BDADDR_LE_RANDOM))
1080 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1081                                          BIT(BDADDR_LE_PUBLIC) | \
1082                                          BIT(BDADDR_LE_RANDOM))
1083
1084 /* These LE scan and inquiry parameters were chosen according to LE General
1085  * Discovery Procedure specification.
1086  */
1087 #define DISCOV_LE_SCAN_WIN              0x12
1088 #define DISCOV_LE_SCAN_INT              0x12
1089 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1090 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1091 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1092 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1093
1094 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1095 int mgmt_index_added(struct hci_dev *hdev);
1096 int mgmt_index_removed(struct hci_dev *hdev);
1097 int mgmt_new_settings(struct hci_dev *hdev);
1098 int mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1099 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1100 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1101 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1102 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1103 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1104                       bool persistent);
1105 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1106                           u8 addr_type, u32 flags, u8 *name, u8 name_len,
1107                           u8 *dev_class);
1108 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1109                              u8 link_type, u8 addr_type, u8 reason);
1110 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111                            u8 link_type, u8 addr_type, u8 status);
1112 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1113                         u8 addr_type, u8 status);
1114 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1115 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116                                  u8 status);
1117 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1118                                      u8 status);
1119 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120                               u8 link_type, u8 addr_type, __le32 value,
1121                               u8 confirm_hint);
1122 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1123                                      u8 link_type, u8 addr_type, u8 status);
1124 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1125                                          u8 link_type, u8 addr_type, u8 status);
1126 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1127                               u8 link_type, u8 addr_type);
1128 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1129                                      u8 link_type, u8 addr_type, u8 status);
1130 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1131                                          u8 link_type, u8 addr_type, u8 status);
1132 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1133                              u8 link_type, u8 addr_type, u32 passkey,
1134                              u8 entered);
1135 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1136                      u8 addr_type, u8 status);
1137 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1138 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1139 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1140                                    u8 status);
1141 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1142 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1143                                             u8 *randomizer, u8 status);
1144 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1145                       u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1146                       u8 ssp, u8 *eir, u16 eir_len);
1147 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1148                      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1149 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1150 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1151 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1152 bool mgmt_valid_hdev(struct hci_dev *hdev);
1153 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1154
1155 /* HCI info for socket */
1156 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1157
1158 struct hci_pinfo {
1159         struct bt_sock    bt;
1160         struct hci_dev    *hdev;
1161         struct hci_filter filter;
1162         __u32             cmsg_mask;
1163         unsigned short   channel;
1164 };
1165
1166 /* HCI security filter */
1167 #define HCI_SFLT_MAX_OGF  5
1168
1169 struct hci_sec_filter {
1170         __u32 type_mask;
1171         __u32 event_mask[2];
1172         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1173 };
1174
1175 /* ----- HCI requests ----- */
1176 #define HCI_REQ_DONE      0
1177 #define HCI_REQ_PEND      1
1178 #define HCI_REQ_CANCELED  2
1179
1180 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1181 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1182
1183 void hci_update_ad(struct hci_request *req);
1184
1185 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1186                                         u16 latency, u16 to_multiplier);
1187 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1188                                                         __u8 ltk[16]);
1189
1190 u8 bdaddr_to_le(u8 bdaddr_type);
1191
1192 #define SCO_AIRMODE_MASK       0x0003
1193 #define SCO_AIRMODE_CVSD       0x0000
1194 #define SCO_AIRMODE_TRANSP     0x0003
1195
1196 #endif /* __HCI_CORE_H */