11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds BlueZ - Bluetooth protocol stack for Linux 31da177e4SLinus Torvalds Copyright (C) 2000-2001 Qualcomm Incorporated 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 61da177e4SLinus Torvalds 71da177e4SLinus Torvalds This program is free software; you can redistribute it and/or modify 81da177e4SLinus Torvalds it under the terms of the GNU General Public License version 2 as 91da177e4SLinus Torvalds published by the Free Software Foundation; 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 121da177e4SLinus Torvalds OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 131da177e4SLinus Torvalds FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 141da177e4SLinus Torvalds IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 151da177e4SLinus Torvalds CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 161da177e4SLinus Torvalds WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 171da177e4SLinus Torvalds ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 181da177e4SLinus Torvalds OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 211da177e4SLinus Torvalds COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 221da177e4SLinus Torvalds SOFTWARE IS DISCLAIMED. 231da177e4SLinus Torvalds */ 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #ifndef __BLUETOOTH_H 261da177e4SLinus Torvalds #define __BLUETOOTH_H 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds #include <linux/poll.h> 291da177e4SLinus Torvalds #include <net/sock.h> 30256a06c8SMasatake YAMATO #include <linux/seq_file.h> 311da177e4SLinus Torvalds 329e8305b3SMarcel Holtmann #define BT_SUBSYS_VERSION 2 334037a774SMarcel Holtmann #define BT_SUBSYS_REVISION 22 34dd31506dSMarcel Holtmann 351da177e4SLinus Torvalds #ifndef AF_BLUETOOTH 361da177e4SLinus Torvalds #define AF_BLUETOOTH 31 371da177e4SLinus Torvalds #define PF_BLUETOOTH AF_BLUETOOTH 381da177e4SLinus Torvalds #endif 391da177e4SLinus Torvalds 40d095c1ebSAndrei Emeltchenko /* Bluetooth versions */ 41d095c1ebSAndrei Emeltchenko #define BLUETOOTH_VER_1_1 1 42d095c1ebSAndrei Emeltchenko #define BLUETOOTH_VER_1_2 2 43d095c1ebSAndrei Emeltchenko #define BLUETOOTH_VER_2_0 3 44cde1a8a9SIsmael Ferreras Morezuelas #define BLUETOOTH_VER_2_1 4 45cde1a8a9SIsmael Ferreras Morezuelas #define BLUETOOTH_VER_4_0 6 46d095c1ebSAndrei Emeltchenko 471da177e4SLinus Torvalds /* Reserv for core and drivers use */ 481da177e4SLinus Torvalds #define BT_SKB_RESERVE 8 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds #define BTPROTO_L2CAP 0 511da177e4SLinus Torvalds #define BTPROTO_HCI 1 521da177e4SLinus Torvalds #define BTPROTO_SCO 2 531da177e4SLinus Torvalds #define BTPROTO_RFCOMM 3 541da177e4SLinus Torvalds #define BTPROTO_BNEP 4 551da177e4SLinus Torvalds #define BTPROTO_CMTP 5 561da177e4SLinus Torvalds #define BTPROTO_HIDP 6 571da177e4SLinus Torvalds #define BTPROTO_AVDTP 7 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds #define SOL_HCI 0 601da177e4SLinus Torvalds #define SOL_L2CAP 6 611da177e4SLinus Torvalds #define SOL_SCO 17 621da177e4SLinus Torvalds #define SOL_RFCOMM 18 631da177e4SLinus Torvalds 648c1b2355SMarcel Holtmann #define BT_SECURITY 4 658c1b2355SMarcel Holtmann struct bt_security { 668c1b2355SMarcel Holtmann __u8 level; 678f360119SVinicius Costa Gomes __u8 key_size; 688c1b2355SMarcel Holtmann }; 698c1b2355SMarcel Holtmann #define BT_SECURITY_SDP 0 708c1b2355SMarcel Holtmann #define BT_SECURITY_LOW 1 718c1b2355SMarcel Holtmann #define BT_SECURITY_MEDIUM 2 728c1b2355SMarcel Holtmann #define BT_SECURITY_HIGH 3 737b5a9241SMarcel Holtmann #define BT_SECURITY_FIPS 4 748c1b2355SMarcel Holtmann 75c4f912e1SMarcel Holtmann #define BT_DEFER_SETUP 7 76c4f912e1SMarcel Holtmann 77e702112fSAndrei Emeltchenko #define BT_FLUSHABLE 8 78e702112fSAndrei Emeltchenko 79e702112fSAndrei Emeltchenko #define BT_FLUSHABLE_OFF 0 80e702112fSAndrei Emeltchenko #define BT_FLUSHABLE_ON 1 81e702112fSAndrei Emeltchenko 8214b12d0bSJaikumar Ganesh #define BT_POWER 9 8314b12d0bSJaikumar Ganesh struct bt_power { 8414b12d0bSJaikumar Ganesh __u8 force_active; 8514b12d0bSJaikumar Ganesh }; 8614b12d0bSJaikumar Ganesh #define BT_POWER_FORCE_ACTIVE_OFF 0 8714b12d0bSJaikumar Ganesh #define BT_POWER_FORCE_ACTIVE_ON 1 8814b12d0bSJaikumar Ganesh 89c14968b0SMat Martineau #define BT_CHANNEL_POLICY 10 90c14968b0SMat Martineau 91c14968b0SMat Martineau /* BR/EDR only (default policy) 92c14968b0SMat Martineau * AMP controllers cannot be used. 93c14968b0SMat Martineau * Channel move requests from the remote device are denied. 94c14968b0SMat Martineau * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. 95c14968b0SMat Martineau */ 96c14968b0SMat Martineau #define BT_CHANNEL_POLICY_BREDR_ONLY 0 97c14968b0SMat Martineau 98c14968b0SMat Martineau /* BR/EDR Preferred 99c14968b0SMat Martineau * Allow use of AMP controllers. 100c14968b0SMat Martineau * If the L2CAP channel is currently on AMP, move it to BR/EDR. 101c14968b0SMat Martineau * Channel move requests from the remote device are allowed. 102c14968b0SMat Martineau */ 103c14968b0SMat Martineau #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 104c14968b0SMat Martineau 105c14968b0SMat Martineau /* AMP Preferred 106c14968b0SMat Martineau * Allow use of AMP controllers 107c14968b0SMat Martineau * If the L2CAP channel is currently on BR/EDR and AMP controller 108c14968b0SMat Martineau * resources are available, initiate a channel move to AMP. 109c14968b0SMat Martineau * Channel move requests from the remote device are allowed. 110c14968b0SMat Martineau * If the L2CAP socket has not been connected yet, try to create 111c14968b0SMat Martineau * and configure the channel directly on an AMP controller rather 112c14968b0SMat Martineau * than BR/EDR. 113c14968b0SMat Martineau */ 114c14968b0SMat Martineau #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 115c14968b0SMat Martineau 116ad10b1a4SFrédéric Dalleau #define BT_VOICE 11 117ad10b1a4SFrédéric Dalleau struct bt_voice { 118ad10b1a4SFrédéric Dalleau __u16 setting; 119ad10b1a4SFrédéric Dalleau }; 120ad10b1a4SFrédéric Dalleau 121ad10b1a4SFrédéric Dalleau #define BT_VOICE_TRANSPARENT 0x0003 122ad10b1a4SFrédéric Dalleau #define BT_VOICE_CVSD_16BIT 0x0060 123ad10b1a4SFrédéric Dalleau 1241f435424SJohan Hedberg #define BT_SNDMTU 12 1251f435424SJohan Hedberg #define BT_RCVMTU 13 126eab2404bSLuiz Augusto von Dentz #define BT_PHY 14 127eab2404bSLuiz Augusto von Dentz 128eab2404bSLuiz Augusto von Dentz #define BT_PHY_BR_1M_1SLOT 0x00000001 129eab2404bSLuiz Augusto von Dentz #define BT_PHY_BR_1M_3SLOT 0x00000002 130eab2404bSLuiz Augusto von Dentz #define BT_PHY_BR_1M_5SLOT 0x00000004 131eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_2M_1SLOT 0x00000008 132eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_2M_3SLOT 0x00000010 133eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_2M_5SLOT 0x00000020 134eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_3M_1SLOT 0x00000040 135eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_3M_3SLOT 0x00000080 136eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_3M_5SLOT 0x00000100 137eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_1M_TX 0x00000200 138eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_1M_RX 0x00000400 139eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_2M_TX 0x00000800 140eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_2M_RX 0x00001000 141eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_CODED_TX 0x00002000 142eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_CODED_RX 0x00004000 1431f435424SJohan Hedberg 1443ee7b7cdSLuiz Augusto von Dentz #define BT_MODE 15 1453ee7b7cdSLuiz Augusto von Dentz 1463ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_BASIC 0x00 1473ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_ERTM 0x01 1483ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_STREAMING 0x02 1493ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_LE_FLOWCTL 0x03 1503ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_EXT_FLOWCTL 0x04 1513ee7b7cdSLuiz Augusto von Dentz 15200398e1dSAlain Michaud #define BT_PKT_STATUS 16 15300398e1dSAlain Michaud 15400398e1dSAlain Michaud #define BT_SCM_PKT_STATUS 0x03 15500398e1dSAlain Michaud 156248733e8SKiran K #define BT_CODEC 19 157248733e8SKiran K 158248733e8SKiran K struct bt_codec_caps { 159248733e8SKiran K __u8 len; 160248733e8SKiran K __u8 data[]; 161248733e8SKiran K } __packed; 162248733e8SKiran K 163248733e8SKiran K struct bt_codec { 164248733e8SKiran K __u8 id; 165248733e8SKiran K __u16 cid; 166248733e8SKiran K __u16 vid; 167248733e8SKiran K __u8 data_path; 168248733e8SKiran K __u8 num_caps; 169248733e8SKiran K } __packed; 170248733e8SKiran K 171248733e8SKiran K struct bt_codecs { 172248733e8SKiran K __u8 num_codecs; 173248733e8SKiran K struct bt_codec codecs[]; 174248733e8SKiran K } __packed; 175248733e8SKiran K 176f6873401SKiran K #define BT_CODEC_CVSD 0x02 177*b2af264aSKiran K #define BT_CODEC_TRANSPARENT 0x03 178f6873401SKiran K 1793ed7003eSJoe Perches __printf(1, 2) 1802b0bf6c8SJoe Perches void bt_info(const char *fmt, ...); 1813ed7003eSJoe Perches __printf(1, 2) 182594b31eaSFrederic Danis void bt_warn(const char *fmt, ...); 183594b31eaSFrederic Danis __printf(1, 2) 1842b0bf6c8SJoe Perches void bt_err(const char *fmt, ...); 185e625e50cSMarcel Holtmann #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) 186e625e50cSMarcel Holtmann void bt_dbg_set(bool enable); 187e625e50cSMarcel Holtmann bool bt_dbg_get(void); 188e625e50cSMarcel Holtmann __printf(1, 2) 189e625e50cSMarcel Holtmann void bt_dbg(const char *fmt, ...); 190e625e50cSMarcel Holtmann #endif 191e781b7f7SSzymon Janc __printf(1, 2) 19236278a5dSAlain Michaud void bt_warn_ratelimited(const char *fmt, ...); 19336278a5dSAlain Michaud __printf(1, 2) 194e781b7f7SSzymon Janc void bt_err_ratelimited(const char *fmt, ...); 195e1447d8dSJoe Perches 1963ed7003eSJoe Perches #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__) 197594b31eaSFrederic Danis #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__) 1983ed7003eSJoe Perches #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) 199e625e50cSMarcel Holtmann 200e625e50cSMarcel Holtmann #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) 201e625e50cSMarcel Holtmann #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__) 202e625e50cSMarcel Holtmann #else 2033ed7003eSJoe Perches #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__) 204e625e50cSMarcel Holtmann #endif 2051da177e4SLinus Torvalds 2066f558b70SLoic Poulain #define bt_dev_info(hdev, fmt, ...) \ 2076f558b70SLoic Poulain BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__) 208594b31eaSFrederic Danis #define bt_dev_warn(hdev, fmt, ...) \ 209594b31eaSFrederic Danis BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__) 2106f558b70SLoic Poulain #define bt_dev_err(hdev, fmt, ...) \ 2116f558b70SLoic Poulain BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__) 2126f558b70SLoic Poulain #define bt_dev_dbg(hdev, fmt, ...) \ 2136f558b70SLoic Poulain BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__) 2146f558b70SLoic Poulain 21536278a5dSAlain Michaud #define bt_dev_warn_ratelimited(hdev, fmt, ...) \ 21636278a5dSAlain Michaud bt_warn_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__) 2172064ee33SMarcel Holtmann #define bt_dev_err_ratelimited(hdev, fmt, ...) \ 218657cc646SMarcel Holtmann bt_err_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__) 2192064ee33SMarcel Holtmann 2201da177e4SLinus Torvalds /* Connection and socket states */ 2211da177e4SLinus Torvalds enum { 2221da177e4SLinus Torvalds BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 2231da177e4SLinus Torvalds BT_OPEN, 2241da177e4SLinus Torvalds BT_BOUND, 2251da177e4SLinus Torvalds BT_LISTEN, 2261da177e4SLinus Torvalds BT_CONNECT, 2271da177e4SLinus Torvalds BT_CONNECT2, 2281da177e4SLinus Torvalds BT_CONFIG, 2291da177e4SLinus Torvalds BT_DISCONN, 2301da177e4SLinus Torvalds BT_CLOSED 2311da177e4SLinus Torvalds }; 2321da177e4SLinus Torvalds 23320d1803aSAndrei Emeltchenko /* If unused will be removed by compiler */ 23420d1803aSAndrei Emeltchenko static inline const char *state_to_string(int state) 23520d1803aSAndrei Emeltchenko { 23620d1803aSAndrei Emeltchenko switch (state) { 23720d1803aSAndrei Emeltchenko case BT_CONNECTED: 23820d1803aSAndrei Emeltchenko return "BT_CONNECTED"; 23920d1803aSAndrei Emeltchenko case BT_OPEN: 24020d1803aSAndrei Emeltchenko return "BT_OPEN"; 24120d1803aSAndrei Emeltchenko case BT_BOUND: 24220d1803aSAndrei Emeltchenko return "BT_BOUND"; 24320d1803aSAndrei Emeltchenko case BT_LISTEN: 24420d1803aSAndrei Emeltchenko return "BT_LISTEN"; 24520d1803aSAndrei Emeltchenko case BT_CONNECT: 24620d1803aSAndrei Emeltchenko return "BT_CONNECT"; 24720d1803aSAndrei Emeltchenko case BT_CONNECT2: 24820d1803aSAndrei Emeltchenko return "BT_CONNECT2"; 24920d1803aSAndrei Emeltchenko case BT_CONFIG: 25020d1803aSAndrei Emeltchenko return "BT_CONFIG"; 25120d1803aSAndrei Emeltchenko case BT_DISCONN: 25220d1803aSAndrei Emeltchenko return "BT_DISCONN"; 25320d1803aSAndrei Emeltchenko case BT_CLOSED: 25420d1803aSAndrei Emeltchenko return "BT_CLOSED"; 25520d1803aSAndrei Emeltchenko } 25620d1803aSAndrei Emeltchenko 25720d1803aSAndrei Emeltchenko return "invalid state"; 25820d1803aSAndrei Emeltchenko } 25920d1803aSAndrei Emeltchenko 2601da177e4SLinus Torvalds /* BD Address */ 2611da177e4SLinus Torvalds typedef struct { 2621da177e4SLinus Torvalds __u8 b[6]; 26366c853ccSGustavo F. Padovan } __packed bdaddr_t; 2641da177e4SLinus Torvalds 265591f47f3SAndre Guedes /* BD Address type */ 266591f47f3SAndre Guedes #define BDADDR_BREDR 0x00 267591f47f3SAndre Guedes #define BDADDR_LE_PUBLIC 0x01 268591f47f3SAndre Guedes #define BDADDR_LE_RANDOM 0x02 269591f47f3SAndre Guedes 27021fcf572SPavel Machek static inline bool bdaddr_type_is_valid(u8 type) 271679efe2bSJohan Hedberg { 272679efe2bSJohan Hedberg switch (type) { 273679efe2bSJohan Hedberg case BDADDR_BREDR: 274679efe2bSJohan Hedberg case BDADDR_LE_PUBLIC: 275679efe2bSJohan Hedberg case BDADDR_LE_RANDOM: 276679efe2bSJohan Hedberg return true; 277679efe2bSJohan Hedberg } 278679efe2bSJohan Hedberg 279679efe2bSJohan Hedberg return false; 280679efe2bSJohan Hedberg } 281679efe2bSJohan Hedberg 28221fcf572SPavel Machek static inline bool bdaddr_type_is_le(u8 type) 283679efe2bSJohan Hedberg { 284679efe2bSJohan Hedberg switch (type) { 285679efe2bSJohan Hedberg case BDADDR_LE_PUBLIC: 286679efe2bSJohan Hedberg case BDADDR_LE_RANDOM: 287679efe2bSJohan Hedberg return true; 288679efe2bSJohan Hedberg } 289679efe2bSJohan Hedberg 290679efe2bSJohan Hedberg return false; 291679efe2bSJohan Hedberg } 292679efe2bSJohan Hedberg 2931da177e4SLinus Torvalds #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 294a59ac2f7SMarcel Holtmann #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}) 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds /* Copy, swap, convert BD Address */ 297f53c20e9SDavid Herrmann static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2) 2981da177e4SLinus Torvalds { 2991da177e4SLinus Torvalds return memcmp(ba1, ba2, sizeof(bdaddr_t)); 3001da177e4SLinus Torvalds } 301f53c20e9SDavid Herrmann static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src) 3021da177e4SLinus Torvalds { 3031da177e4SLinus Torvalds memcpy(dst, src, sizeof(bdaddr_t)); 3041da177e4SLinus Torvalds } 3051da177e4SLinus Torvalds 30665bce462SLoic Poulain void baswap(bdaddr_t *dst, const bdaddr_t *src); 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds /* Common socket structures and functions */ 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds #define bt_sk(__sk) ((struct bt_sock *) __sk) 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds struct bt_sock { 3131da177e4SLinus Torvalds struct sock sk; 3141da177e4SLinus Torvalds struct list_head accept_q; 3151da177e4SLinus Torvalds struct sock *parent; 316c5daa683SGustavo Padovan unsigned long flags; 317d9763698SMarcel Holtmann void (*skb_msg_name)(struct sk_buff *, void *, int *); 31800398e1dSAlain Michaud void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *); 319c5daa683SGustavo Padovan }; 320c5daa683SGustavo Padovan 321c5daa683SGustavo Padovan enum { 322c5daa683SGustavo Padovan BT_SK_DEFER_SETUP, 323c5daa683SGustavo Padovan BT_SK_SUSPEND, 3241da177e4SLinus Torvalds }; 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds struct bt_sock_list { 3271da177e4SLinus Torvalds struct hlist_head head; 3281da177e4SLinus Torvalds rwlock_t lock; 329256a06c8SMasatake YAMATO #ifdef CONFIG_PROC_FS 330256a06c8SMasatake YAMATO int (* custom_seq_show)(struct seq_file *, void *); 331256a06c8SMasatake YAMATO #endif 3321da177e4SLinus Torvalds }; 3331da177e4SLinus Torvalds 334ec1b4cf7SStephen Hemminger int bt_sock_register(int proto, const struct net_proto_family *ops); 335be9f97f0SDavid Herrmann void bt_sock_unregister(int proto); 3361da177e4SLinus Torvalds void bt_sock_link(struct bt_sock_list *l, struct sock *s); 3371da177e4SLinus Torvalds void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 3381b784140SYing Xue int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, 3391b784140SYing Xue int flags); 3401b784140SYing Xue int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, 3411b784140SYing Xue size_t len, int flags); 342a11e1d43SLinus Torvalds __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait); 3433241ad82SMarcel Holtmann int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 3441da177e4SLinus Torvalds int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 345e793dcf0SJohan Hedberg int bt_sock_wait_ready(struct sock *sk, unsigned long flags); 3461da177e4SLinus Torvalds 347c4f5627fSMatthias Kaehlcke void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh); 3481da177e4SLinus Torvalds void bt_accept_unlink(struct sock *sk); 3491da177e4SLinus Torvalds struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvalds /* Skb helpers */ 35200e3112cSMat Martineau struct l2cap_ctrl { 35321fcf572SPavel Machek u8 sframe:1, 35400e3112cSMat Martineau poll:1, 35500e3112cSMat Martineau final:1, 35600e3112cSMat Martineau fcs:1, 35700e3112cSMat Martineau sar:2, 35800e3112cSMat Martineau super:2; 35921fcf572SPavel Machek 36021fcf572SPavel Machek u16 reqseq; 36121fcf572SPavel Machek u16 txseq; 36221fcf572SPavel Machek u8 retries; 363a4368ff3SJohan Hedberg __le16 psm; 364a4368ff3SJohan Hedberg bdaddr_t bdaddr; 365a4368ff3SJohan Hedberg struct l2cap_chan *chan; 36600e3112cSMat Martineau }; 36700e3112cSMat Martineau 36800398e1dSAlain Michaud struct sco_ctrl { 36900398e1dSAlain Michaud u8 pkt_status; 37000398e1dSAlain Michaud }; 37100398e1dSAlain Michaud 3723119ae95SJohan Hedberg struct hci_dev; 3733119ae95SJohan Hedberg 3741904a853SMarcel Holtmann typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode); 375e6214487SJohan Hedberg typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status, 376e6214487SJohan Hedberg u16 opcode, struct sk_buff *skb); 3773119ae95SJohan Hedberg 37844d27137SJohan Hedberg #define HCI_REQ_START BIT(0) 37944d27137SJohan Hedberg #define HCI_REQ_SKB BIT(1) 38044d27137SJohan Hedberg 381242c0ebdSMarcel Holtmann struct hci_ctrl { 38221fcf572SPavel Machek u16 opcode; 38344d27137SJohan Hedberg u8 req_flags; 384242c0ebdSMarcel Holtmann u8 req_event; 38544d27137SJohan Hedberg union { 386242c0ebdSMarcel Holtmann hci_req_complete_t req_complete; 387242c0ebdSMarcel Holtmann hci_req_complete_skb_t req_complete_skb; 388db6e3e8dSJohan Hedberg }; 38944d27137SJohan Hedberg }; 390db6e3e8dSJohan Hedberg 3911da177e4SLinus Torvalds struct bt_skb_cb { 39221fcf572SPavel Machek u8 pkt_type; 39321fcf572SPavel Machek u8 force_active; 39421fcf572SPavel Machek u16 expect; 39521fcf572SPavel Machek u8 incoming:1; 396db6e3e8dSJohan Hedberg union { 397a4368ff3SJohan Hedberg struct l2cap_ctrl l2cap; 39800398e1dSAlain Michaud struct sco_ctrl sco; 399242c0ebdSMarcel Holtmann struct hci_ctrl hci; 400db6e3e8dSJohan Hedberg }; 4011da177e4SLinus Torvalds }; 4021c2acffbSGustavo F. Padovan #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 4031da177e4SLinus Torvalds 404f5c4a42aSMarcel Holtmann #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type 405f5c4a42aSMarcel Holtmann #define hci_skb_expect(skb) bt_cb((skb))->expect 406f5c4a42aSMarcel Holtmann #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode 407f5c4a42aSMarcel Holtmann 408dd0fc66fSAl Viro static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 4091da177e4SLinus Torvalds { 4101da177e4SLinus Torvalds struct sk_buff *skb; 4111da177e4SLinus Torvalds 412c3c7ea65SGustavo Padovan skb = alloc_skb(len + BT_SKB_RESERVE, how); 4135fcc86bdSJohan Hedberg if (skb) 4141da177e4SLinus Torvalds skb_reserve(skb, BT_SKB_RESERVE); 4151da177e4SLinus Torvalds return skb; 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 4185a9d0a3fSWaldemar Rymarkiewicz static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, 4195a9d0a3fSWaldemar Rymarkiewicz unsigned long len, int nb, int *err) 4201da177e4SLinus Torvalds { 4211da177e4SLinus Torvalds struct sk_buff *skb; 4221da177e4SLinus Torvalds 423c3c7ea65SGustavo Padovan skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err); 4245fcc86bdSJohan Hedberg if (skb) 4251da177e4SLinus Torvalds skb_reserve(skb, BT_SKB_RESERVE); 426e454c844SGustavo F. Padovan 427e454c844SGustavo F. Padovan if (!skb && *err) 428e454c844SGustavo F. Padovan return NULL; 429e454c844SGustavo F. Padovan 430e454c844SGustavo F. Padovan *err = sock_error(sk); 431e454c844SGustavo F. Padovan if (*err) 432e454c844SGustavo F. Padovan goto out; 433e454c844SGustavo F. Padovan 434e454c844SGustavo F. Padovan if (sk->sk_shutdown) { 435e454c844SGustavo F. Padovan *err = -ECONNRESET; 436e454c844SGustavo F. Padovan goto out; 437e454c844SGustavo F. Padovan } 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds return skb; 440e454c844SGustavo F. Padovan 441e454c844SGustavo F. Padovan out: 442e454c844SGustavo F. Padovan kfree_skb(skb); 443e454c844SGustavo F. Padovan return NULL; 4441da177e4SLinus Torvalds } 4451da177e4SLinus Torvalds 44621fcf572SPavel Machek int bt_to_errno(u16 code); 4471da177e4SLinus Torvalds 4486befc644SMarcel Holtmann void hci_sock_set_flag(struct sock *sk, int nr); 4496befc644SMarcel Holtmann void hci_sock_clear_flag(struct sock *sk, int nr); 450c85be545SMarcel Holtmann int hci_sock_test_flag(struct sock *sk, int nr); 451d0f172b1SJohan Hedberg unsigned short hci_sock_get_channel(struct sock *sk); 45270ecce91SMarcel Holtmann u32 hci_sock_get_cookie(struct sock *sk); 4536befc644SMarcel Holtmann 454e74e58f8SJoe Perches int hci_sock_init(void); 455e74e58f8SJoe Perches void hci_sock_cleanup(void); 4566516455dSMarcel Holtmann 457e74e58f8SJoe Perches int bt_sysfs_init(void); 458e74e58f8SJoe Perches void bt_sysfs_cleanup(void); 4596516455dSMarcel Holtmann 460e74e58f8SJoe Perches int bt_procfs_init(struct net *net, const char *name, 461256a06c8SMasatake YAMATO struct bt_sock_list *sk_list, 462256a06c8SMasatake YAMATO int (*seq_show)(struct seq_file *, void *)); 463e74e58f8SJoe Perches void bt_procfs_cleanup(struct net *net, const char *name); 464256a06c8SMasatake YAMATO 465aef7d97cSMarcel Holtmann extern struct dentry *bt_debugfs; 466be9d1227SMarcel Holtmann 46764274518SGustavo F. Padovan int l2cap_init(void); 46864274518SGustavo F. Padovan void l2cap_exit(void); 46964274518SGustavo F. Padovan 470ff50e8afSArron Wang #if IS_ENABLED(CONFIG_BT_BREDR) 47164274518SGustavo F. Padovan int sco_init(void); 47264274518SGustavo F. Padovan void sco_exit(void); 473ff50e8afSArron Wang #else 474ff50e8afSArron Wang static inline int sco_init(void) 475ff50e8afSArron Wang { 476ff50e8afSArron Wang return 0; 477ff50e8afSArron Wang } 478ff50e8afSArron Wang 479ff50e8afSArron Wang static inline void sco_exit(void) 480ff50e8afSArron Wang { 481ff50e8afSArron Wang } 482ff50e8afSArron Wang #endif 48364274518SGustavo F. Padovan 4846d785aa3SJohan Hedberg int mgmt_init(void); 4856d785aa3SJohan Hedberg void mgmt_exit(void); 4866d785aa3SJohan Hedberg 487d22015aaSOctavian Purdila void bt_sock_reclassify_lock(struct sock *sk, int proto); 488d22015aaSOctavian Purdila 4891da177e4SLinus Torvalds #endif /* __BLUETOOTH_H */ 490