2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
29 #include <linux/poll.h>
31 #include <linux/seq_file.h>
33 #define BT_SUBSYS_VERSION 2
34 #define BT_SUBSYS_REVISION 22
37 #define AF_BLUETOOTH 31
38 #define PF_BLUETOOTH AF_BLUETOOTH
41 /*To enable Tizen specific fixes */
44 /* Bluetooth versions */
45 #define BLUETOOTH_VER_1_1 1
46 #define BLUETOOTH_VER_1_2 2
47 #define BLUETOOTH_VER_2_0 3
48 #define BLUETOOTH_VER_2_1 4
49 #define BLUETOOTH_VER_4_0 6
51 /* Reserv for core and drivers use */
52 #define BT_SKB_RESERVE 8
54 #define BTPROTO_L2CAP 0
57 #define BTPROTO_RFCOMM 3
58 #define BTPROTO_BNEP 4
59 #define BTPROTO_CMTP 5
60 #define BTPROTO_HIDP 6
61 #define BTPROTO_AVDTP 7
63 #define BTPROTO_LAST BTPROTO_ISO
75 #define BT_SECURITY_SDP 0
76 #define BT_SECURITY_LOW 1
77 #define BT_SECURITY_MEDIUM 2
78 #define BT_SECURITY_HIGH 3
79 #define BT_SECURITY_FIPS 4
81 #define BT_DEFER_SETUP 7
83 #define BT_FLUSHABLE 8
85 #define BT_FLUSHABLE_OFF 0
86 #define BT_FLUSHABLE_ON 1
92 #define BT_POWER_FORCE_ACTIVE_OFF 0
93 #define BT_POWER_FORCE_ACTIVE_ON 1
95 #define BT_CHANNEL_POLICY 10
97 /* BR/EDR only (default policy)
98 * AMP controllers cannot be used.
99 * Channel move requests from the remote device are denied.
100 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
102 #define BT_CHANNEL_POLICY_BREDR_ONLY 0
105 * Allow use of AMP controllers.
106 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
107 * Channel move requests from the remote device are allowed.
109 #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
112 * Allow use of AMP controllers
113 * If the L2CAP channel is currently on BR/EDR and AMP controller
114 * resources are available, initiate a channel move to AMP.
115 * Channel move requests from the remote device are allowed.
116 * If the L2CAP socket has not been connected yet, try to create
117 * and configure the channel directly on an AMP controller rather
120 #define BT_CHANNEL_POLICY_AMP_PREFERRED 2
127 #define BT_VOICE_TRANSPARENT 0x0003
128 #define BT_VOICE_CVSD_16BIT 0x0060
134 #define BT_PHY_BR_1M_1SLOT 0x00000001
135 #define BT_PHY_BR_1M_3SLOT 0x00000002
136 #define BT_PHY_BR_1M_5SLOT 0x00000004
137 #define BT_PHY_EDR_2M_1SLOT 0x00000008
138 #define BT_PHY_EDR_2M_3SLOT 0x00000010
139 #define BT_PHY_EDR_2M_5SLOT 0x00000020
140 #define BT_PHY_EDR_3M_1SLOT 0x00000040
141 #define BT_PHY_EDR_3M_3SLOT 0x00000080
142 #define BT_PHY_EDR_3M_5SLOT 0x00000100
143 #define BT_PHY_LE_1M_TX 0x00000200
144 #define BT_PHY_LE_1M_RX 0x00000400
145 #define BT_PHY_LE_2M_TX 0x00000800
146 #define BT_PHY_LE_2M_RX 0x00001000
147 #define BT_PHY_LE_CODED_TX 0x00002000
148 #define BT_PHY_LE_CODED_RX 0x00004000
152 #define BT_MODE_BASIC 0x00
153 #define BT_MODE_ERTM 0x01
154 #define BT_MODE_STREAMING 0x02
155 #define BT_MODE_LE_FLOWCTL 0x03
156 #define BT_MODE_EXT_FLOWCTL 0x04
158 #define BT_PKT_STATUS 16
160 #define BT_SCM_PKT_STATUS 0x03
162 #define BT_ISO_QOS 17
164 #define BT_ISO_QOS_CIG_UNSET 0xff
165 #define BT_ISO_QOS_CIS_UNSET 0xff
167 #define BT_ISO_QOS_BIG_UNSET 0xff
168 #define BT_ISO_QOS_BIS_UNSET 0xff
170 struct bt_iso_io_qos {
178 struct bt_iso_ucast_qos {
184 struct bt_iso_io_qos in;
185 struct bt_iso_io_qos out;
188 struct bt_iso_bcast_qos {
194 struct bt_iso_io_qos in;
195 struct bt_iso_io_qos out;
208 struct bt_iso_ucast_qos ucast;
209 struct bt_iso_bcast_qos bcast;
213 #define BT_ISO_PHY_1M 0x01
214 #define BT_ISO_PHY_2M 0x02
215 #define BT_ISO_PHY_CODED 0x04
216 #define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \
221 struct bt_codec_caps {
236 struct bt_codec codecs[];
239 #define BT_CODEC_CVSD 0x02
240 #define BT_CODEC_TRANSPARENT 0x03
241 #define BT_CODEC_MSBC 0x05
243 #define BT_ISO_BASE 20
246 void bt_info(const char *fmt, ...);
248 void bt_warn(const char *fmt, ...);
250 void bt_err(const char *fmt, ...);
251 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
252 void bt_dbg_set(bool enable);
253 bool bt_dbg_get(void);
255 void bt_dbg(const char *fmt, ...);
258 void bt_warn_ratelimited(const char *fmt, ...);
260 void bt_err_ratelimited(const char *fmt, ...);
262 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
263 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
264 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
266 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
267 #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__)
269 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
272 #define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null")
274 #define bt_dev_info(hdev, fmt, ...) \
275 BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
276 #define bt_dev_warn(hdev, fmt, ...) \
277 BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
278 #define bt_dev_err(hdev, fmt, ...) \
279 BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
280 #define bt_dev_dbg(hdev, fmt, ...) \
281 BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
283 #define bt_dev_warn_ratelimited(hdev, fmt, ...) \
284 bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
285 #define bt_dev_err_ratelimited(hdev, fmt, ...) \
286 bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
288 /* Connection and socket states */
290 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
301 /* If unused will be removed by compiler */
302 static inline const char *state_to_string(int state)
306 return "BT_CONNECTED";
316 return "BT_CONNECT2";
325 return "invalid state";
334 /* Automatically enable sniff mode for connection.
335 * In case of normal phone this timeout would be 5 seconds
337 #define TIZEN_SNIFF_TIMEOUT 5 /* 5 seconds */
340 /* BD Address type */
341 #define BDADDR_BREDR 0x00
342 #define BDADDR_LE_PUBLIC 0x01
343 #define BDADDR_LE_RANDOM 0x02
345 static inline bool bdaddr_type_is_valid(u8 type)
349 case BDADDR_LE_PUBLIC:
350 case BDADDR_LE_RANDOM:
357 static inline bool bdaddr_type_is_le(u8 type)
360 case BDADDR_LE_PUBLIC:
361 case BDADDR_LE_RANDOM:
368 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
369 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
371 /* Copy, swap, convert BD Address */
372 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
374 return memcmp(ba1, ba2, sizeof(bdaddr_t));
376 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
378 memcpy(dst, src, sizeof(bdaddr_t));
381 void baswap(bdaddr_t *dst, const bdaddr_t *src);
383 /* Common socket structures and functions */
385 #define bt_sk(__sk) ((struct bt_sock *) __sk)
389 struct list_head accept_q;
392 void (*skb_msg_name)(struct sk_buff *, void *, int *);
393 void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *);
402 struct bt_sock_list {
403 struct hlist_head head;
405 #ifdef CONFIG_PROC_FS
406 int (* custom_seq_show)(struct seq_file *, void *);
410 int bt_sock_register(int proto, const struct net_proto_family *ops);
411 void bt_sock_unregister(int proto);
412 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
413 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
414 struct sock *bt_sock_alloc(struct net *net, struct socket *sock,
415 struct proto *prot, int proto, gfp_t prio, int kern);
416 int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
418 int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
419 size_t len, int flags);
420 __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
421 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
422 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
423 int bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags);
425 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
426 void bt_accept_unlink(struct sock *sk);
427 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
443 struct l2cap_chan *chan;
448 typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
449 typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
450 u16 opcode, struct sk_buff *skb);
452 #define HCI_REQ_START BIT(0)
453 #define HCI_REQ_SKB BIT(1)
461 hci_req_complete_t req_complete;
462 hci_req_complete_skb_t req_complete_skb;
467 struct hci_dev *hdev;
478 struct l2cap_ctrl l2cap;
480 struct mgmt_ctrl mgmt;
481 struct scm_creds creds;
484 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
486 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
487 #define hci_skb_pkt_status(skb) bt_cb((skb))->pkt_status
488 #define hci_skb_expect(skb) bt_cb((skb))->expect
489 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
490 #define hci_skb_event(skb) bt_cb((skb))->hci.req_event
491 #define hci_skb_sk(skb) bt_cb((skb))->hci.sk
493 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
497 skb = alloc_skb(len + BT_SKB_RESERVE, how);
499 skb_reserve(skb, BT_SKB_RESERVE);
503 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
504 unsigned long len, int nb, int *err)
508 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
510 skb_reserve(skb, BT_SKB_RESERVE);
515 *err = sock_error(sk);
519 if (sk->sk_shutdown) {
531 /* Shall not be called with lock_sock held */
532 static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk,
534 size_t len, size_t mtu,
535 size_t headroom, size_t tailroom)
538 size_t size = min_t(size_t, len, mtu);
541 skb = bt_skb_send_alloc(sk, size + headroom + tailroom,
542 msg->msg_flags & MSG_DONTWAIT, &err);
546 skb_reserve(skb, headroom);
547 skb_tailroom_reserve(skb, mtu, tailroom);
549 if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) {
551 return ERR_PTR(-EFAULT);
554 skb->priority = sk->sk_priority;
559 /* Similar to bt_skb_sendmsg but can split the msg into multiple fragments
560 * accourding to the MTU.
562 static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk,
564 size_t len, size_t mtu,
565 size_t headroom, size_t tailroom)
567 struct sk_buff *skb, **frag;
569 skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
577 /* Add remaining data over MTU as continuation fragments */
578 frag = &skb_shinfo(skb)->frag_list;
582 tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
590 frag = &(*frag)->next;
596 int bt_to_errno(u16 code);
597 __u8 bt_status(int err);
599 void hci_sock_set_flag(struct sock *sk, int nr);
600 void hci_sock_clear_flag(struct sock *sk, int nr);
601 int hci_sock_test_flag(struct sock *sk, int nr);
602 unsigned short hci_sock_get_channel(struct sock *sk);
603 u32 hci_sock_get_cookie(struct sock *sk);
605 int hci_sock_init(void);
606 void hci_sock_cleanup(void);
608 int bt_sysfs_init(void);
609 void bt_sysfs_cleanup(void);
611 int bt_procfs_init(struct net *net, const char *name,
612 struct bt_sock_list *sk_list,
613 int (*seq_show)(struct seq_file *, void *));
614 void bt_procfs_cleanup(struct net *net, const char *name);
616 extern struct dentry *bt_debugfs;
618 int l2cap_init(void);
619 void l2cap_exit(void);
621 #if IS_ENABLED(CONFIG_BT_BREDR)
625 static inline int sco_init(void)
630 static inline void sco_exit(void)
635 #if IS_ENABLED(CONFIG_BT_LE)
638 bool iso_enabled(void);
640 static inline int iso_init(void)
645 static inline int iso_exit(void)
650 static inline bool iso_enabled(void)
657 void mgmt_exit(void);
658 void mgmt_cleanup(struct sock *sk);
660 void bt_sock_reclassify_lock(struct sock *sk, int proto);
662 #endif /* __BLUETOOTH_H */