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 5826afbd82SLuiz Augusto von Dentz #define BTPROTO_ISO 8 5926afbd82SLuiz Augusto von Dentz #define BTPROTO_LAST BTPROTO_ISO 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds #define SOL_HCI 0 621da177e4SLinus Torvalds #define SOL_L2CAP 6 631da177e4SLinus Torvalds #define SOL_SCO 17 641da177e4SLinus Torvalds #define SOL_RFCOMM 18 651da177e4SLinus Torvalds 668c1b2355SMarcel Holtmann #define BT_SECURITY 4 678c1b2355SMarcel Holtmann struct bt_security { 688c1b2355SMarcel Holtmann __u8 level; 698f360119SVinicius Costa Gomes __u8 key_size; 708c1b2355SMarcel Holtmann }; 718c1b2355SMarcel Holtmann #define BT_SECURITY_SDP 0 728c1b2355SMarcel Holtmann #define BT_SECURITY_LOW 1 738c1b2355SMarcel Holtmann #define BT_SECURITY_MEDIUM 2 748c1b2355SMarcel Holtmann #define BT_SECURITY_HIGH 3 757b5a9241SMarcel Holtmann #define BT_SECURITY_FIPS 4 768c1b2355SMarcel Holtmann 77c4f912e1SMarcel Holtmann #define BT_DEFER_SETUP 7 78c4f912e1SMarcel Holtmann 79e702112fSAndrei Emeltchenko #define BT_FLUSHABLE 8 80e702112fSAndrei Emeltchenko 81e702112fSAndrei Emeltchenko #define BT_FLUSHABLE_OFF 0 82e702112fSAndrei Emeltchenko #define BT_FLUSHABLE_ON 1 83e702112fSAndrei Emeltchenko 8414b12d0bSJaikumar Ganesh #define BT_POWER 9 8514b12d0bSJaikumar Ganesh struct bt_power { 8614b12d0bSJaikumar Ganesh __u8 force_active; 8714b12d0bSJaikumar Ganesh }; 8814b12d0bSJaikumar Ganesh #define BT_POWER_FORCE_ACTIVE_OFF 0 8914b12d0bSJaikumar Ganesh #define BT_POWER_FORCE_ACTIVE_ON 1 9014b12d0bSJaikumar Ganesh 91c14968b0SMat Martineau #define BT_CHANNEL_POLICY 10 92c14968b0SMat Martineau 93c14968b0SMat Martineau /* BR/EDR only (default policy) 94c14968b0SMat Martineau * AMP controllers cannot be used. 95c14968b0SMat Martineau * Channel move requests from the remote device are denied. 96c14968b0SMat Martineau * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. 97c14968b0SMat Martineau */ 98c14968b0SMat Martineau #define BT_CHANNEL_POLICY_BREDR_ONLY 0 99c14968b0SMat Martineau 100c14968b0SMat Martineau /* BR/EDR Preferred 101c14968b0SMat Martineau * Allow use of AMP controllers. 102c14968b0SMat Martineau * If the L2CAP channel is currently on AMP, move it to BR/EDR. 103c14968b0SMat Martineau * Channel move requests from the remote device are allowed. 104c14968b0SMat Martineau */ 105c14968b0SMat Martineau #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 106c14968b0SMat Martineau 107c14968b0SMat Martineau /* AMP Preferred 108c14968b0SMat Martineau * Allow use of AMP controllers 109c14968b0SMat Martineau * If the L2CAP channel is currently on BR/EDR and AMP controller 110c14968b0SMat Martineau * resources are available, initiate a channel move to AMP. 111c14968b0SMat Martineau * Channel move requests from the remote device are allowed. 112c14968b0SMat Martineau * If the L2CAP socket has not been connected yet, try to create 113c14968b0SMat Martineau * and configure the channel directly on an AMP controller rather 114c14968b0SMat Martineau * than BR/EDR. 115c14968b0SMat Martineau */ 116c14968b0SMat Martineau #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 117c14968b0SMat Martineau 118ad10b1a4SFrédéric Dalleau #define BT_VOICE 11 119ad10b1a4SFrédéric Dalleau struct bt_voice { 120ad10b1a4SFrédéric Dalleau __u16 setting; 121ad10b1a4SFrédéric Dalleau }; 122ad10b1a4SFrédéric Dalleau 123ad10b1a4SFrédéric Dalleau #define BT_VOICE_TRANSPARENT 0x0003 124ad10b1a4SFrédéric Dalleau #define BT_VOICE_CVSD_16BIT 0x0060 125ad10b1a4SFrédéric Dalleau 1261f435424SJohan Hedberg #define BT_SNDMTU 12 1271f435424SJohan Hedberg #define BT_RCVMTU 13 128eab2404bSLuiz Augusto von Dentz #define BT_PHY 14 129eab2404bSLuiz Augusto von Dentz 130eab2404bSLuiz Augusto von Dentz #define BT_PHY_BR_1M_1SLOT 0x00000001 131eab2404bSLuiz Augusto von Dentz #define BT_PHY_BR_1M_3SLOT 0x00000002 132eab2404bSLuiz Augusto von Dentz #define BT_PHY_BR_1M_5SLOT 0x00000004 133eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_2M_1SLOT 0x00000008 134eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_2M_3SLOT 0x00000010 135eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_2M_5SLOT 0x00000020 136eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_3M_1SLOT 0x00000040 137eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_3M_3SLOT 0x00000080 138eab2404bSLuiz Augusto von Dentz #define BT_PHY_EDR_3M_5SLOT 0x00000100 139eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_1M_TX 0x00000200 140eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_1M_RX 0x00000400 141eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_2M_TX 0x00000800 142eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_2M_RX 0x00001000 143eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_CODED_TX 0x00002000 144eab2404bSLuiz Augusto von Dentz #define BT_PHY_LE_CODED_RX 0x00004000 1451f435424SJohan Hedberg 1463ee7b7cdSLuiz Augusto von Dentz #define BT_MODE 15 1473ee7b7cdSLuiz Augusto von Dentz 1483ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_BASIC 0x00 1493ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_ERTM 0x01 1503ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_STREAMING 0x02 1513ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_LE_FLOWCTL 0x03 1523ee7b7cdSLuiz Augusto von Dentz #define BT_MODE_EXT_FLOWCTL 0x04 1533ee7b7cdSLuiz Augusto von Dentz 15400398e1dSAlain Michaud #define BT_PKT_STATUS 16 15500398e1dSAlain Michaud 15600398e1dSAlain Michaud #define BT_SCM_PKT_STATUS 0x03 15700398e1dSAlain Michaud 15826afbd82SLuiz Augusto von Dentz #define BT_ISO_QOS 17 15926afbd82SLuiz Augusto von Dentz 16026afbd82SLuiz Augusto von Dentz #define BT_ISO_QOS_CIG_UNSET 0xff 16126afbd82SLuiz Augusto von Dentz #define BT_ISO_QOS_CIS_UNSET 0xff 16226afbd82SLuiz Augusto von Dentz 16326afbd82SLuiz Augusto von Dentz struct bt_iso_io_qos { 16426afbd82SLuiz Augusto von Dentz __u32 interval; 16526afbd82SLuiz Augusto von Dentz __u16 latency; 16626afbd82SLuiz Augusto von Dentz __u16 sdu; 16726afbd82SLuiz Augusto von Dentz __u8 phy; 16826afbd82SLuiz Augusto von Dentz __u8 rtn; 16926afbd82SLuiz Augusto von Dentz }; 17026afbd82SLuiz Augusto von Dentz 17126afbd82SLuiz Augusto von Dentz struct bt_iso_qos { 17226afbd82SLuiz Augusto von Dentz __u8 cig; 17326afbd82SLuiz Augusto von Dentz __u8 cis; 17426afbd82SLuiz Augusto von Dentz __u8 sca; 17526afbd82SLuiz Augusto von Dentz __u8 packing; 17626afbd82SLuiz Augusto von Dentz __u8 framing; 17726afbd82SLuiz Augusto von Dentz struct bt_iso_io_qos in; 17826afbd82SLuiz Augusto von Dentz struct bt_iso_io_qos out; 17926afbd82SLuiz Augusto von Dentz }; 18026afbd82SLuiz Augusto von Dentz 18126afbd82SLuiz Augusto von Dentz #define BT_ISO_PHY_1M 0x01 18226afbd82SLuiz Augusto von Dentz #define BT_ISO_PHY_2M 0x02 18326afbd82SLuiz Augusto von Dentz #define BT_ISO_PHY_CODED 0x04 18426afbd82SLuiz Augusto von Dentz #define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \ 18526afbd82SLuiz Augusto von Dentz BT_ISO_PHY_CODED) 18626afbd82SLuiz Augusto von Dentz 187248733e8SKiran K #define BT_CODEC 19 188248733e8SKiran K 189248733e8SKiran K struct bt_codec_caps { 190248733e8SKiran K __u8 len; 191248733e8SKiran K __u8 data[]; 192248733e8SKiran K } __packed; 193248733e8SKiran K 194248733e8SKiran K struct bt_codec { 195248733e8SKiran K __u8 id; 196248733e8SKiran K __u16 cid; 197248733e8SKiran K __u16 vid; 198248733e8SKiran K __u8 data_path; 199248733e8SKiran K __u8 num_caps; 200248733e8SKiran K } __packed; 201248733e8SKiran K 202248733e8SKiran K struct bt_codecs { 203248733e8SKiran K __u8 num_codecs; 204248733e8SKiran K struct bt_codec codecs[]; 205248733e8SKiran K } __packed; 206248733e8SKiran K 207f6873401SKiran K #define BT_CODEC_CVSD 0x02 208b2af264aSKiran K #define BT_CODEC_TRANSPARENT 0x03 209904c139aSKiran K #define BT_CODEC_MSBC 0x05 210f6873401SKiran K 2113ed7003eSJoe Perches __printf(1, 2) 2122b0bf6c8SJoe Perches void bt_info(const char *fmt, ...); 2133ed7003eSJoe Perches __printf(1, 2) 214594b31eaSFrederic Danis void bt_warn(const char *fmt, ...); 215594b31eaSFrederic Danis __printf(1, 2) 2162b0bf6c8SJoe Perches void bt_err(const char *fmt, ...); 217e625e50cSMarcel Holtmann #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) 218e625e50cSMarcel Holtmann void bt_dbg_set(bool enable); 219e625e50cSMarcel Holtmann bool bt_dbg_get(void); 220e625e50cSMarcel Holtmann __printf(1, 2) 221e625e50cSMarcel Holtmann void bt_dbg(const char *fmt, ...); 222e625e50cSMarcel Holtmann #endif 223e781b7f7SSzymon Janc __printf(1, 2) 22436278a5dSAlain Michaud void bt_warn_ratelimited(const char *fmt, ...); 22536278a5dSAlain Michaud __printf(1, 2) 226e781b7f7SSzymon Janc void bt_err_ratelimited(const char *fmt, ...); 227e1447d8dSJoe Perches 2283ed7003eSJoe Perches #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__) 229594b31eaSFrederic Danis #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__) 2303ed7003eSJoe Perches #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) 231e625e50cSMarcel Holtmann 232e625e50cSMarcel Holtmann #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) 233e625e50cSMarcel Holtmann #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__) 234e625e50cSMarcel Holtmann #else 2353ed7003eSJoe Perches #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__) 236e625e50cSMarcel Holtmann #endif 2371da177e4SLinus Torvalds 2389b392e0eSLuiz Augusto von Dentz #define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null") 2399b392e0eSLuiz Augusto von Dentz 2406f558b70SLoic Poulain #define bt_dev_info(hdev, fmt, ...) \ 2419b392e0eSLuiz Augusto von Dentz BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 242594b31eaSFrederic Danis #define bt_dev_warn(hdev, fmt, ...) \ 2439b392e0eSLuiz Augusto von Dentz BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 2446f558b70SLoic Poulain #define bt_dev_err(hdev, fmt, ...) \ 2459b392e0eSLuiz Augusto von Dentz BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 2466f558b70SLoic Poulain #define bt_dev_dbg(hdev, fmt, ...) \ 2479b392e0eSLuiz Augusto von Dentz BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 2486f558b70SLoic Poulain 24936278a5dSAlain Michaud #define bt_dev_warn_ratelimited(hdev, fmt, ...) \ 2509b392e0eSLuiz Augusto von Dentz bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 2512064ee33SMarcel Holtmann #define bt_dev_err_ratelimited(hdev, fmt, ...) \ 2529b392e0eSLuiz Augusto von Dentz bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 2532064ee33SMarcel Holtmann 2541da177e4SLinus Torvalds /* Connection and socket states */ 2551da177e4SLinus Torvalds enum { 2561da177e4SLinus Torvalds BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 2571da177e4SLinus Torvalds BT_OPEN, 2581da177e4SLinus Torvalds BT_BOUND, 2591da177e4SLinus Torvalds BT_LISTEN, 2601da177e4SLinus Torvalds BT_CONNECT, 2611da177e4SLinus Torvalds BT_CONNECT2, 2621da177e4SLinus Torvalds BT_CONFIG, 2631da177e4SLinus Torvalds BT_DISCONN, 2641da177e4SLinus Torvalds BT_CLOSED 2651da177e4SLinus Torvalds }; 2661da177e4SLinus Torvalds 26720d1803aSAndrei Emeltchenko /* If unused will be removed by compiler */ 26820d1803aSAndrei Emeltchenko static inline const char *state_to_string(int state) 26920d1803aSAndrei Emeltchenko { 27020d1803aSAndrei Emeltchenko switch (state) { 27120d1803aSAndrei Emeltchenko case BT_CONNECTED: 27220d1803aSAndrei Emeltchenko return "BT_CONNECTED"; 27320d1803aSAndrei Emeltchenko case BT_OPEN: 27420d1803aSAndrei Emeltchenko return "BT_OPEN"; 27520d1803aSAndrei Emeltchenko case BT_BOUND: 27620d1803aSAndrei Emeltchenko return "BT_BOUND"; 27720d1803aSAndrei Emeltchenko case BT_LISTEN: 27820d1803aSAndrei Emeltchenko return "BT_LISTEN"; 27920d1803aSAndrei Emeltchenko case BT_CONNECT: 28020d1803aSAndrei Emeltchenko return "BT_CONNECT"; 28120d1803aSAndrei Emeltchenko case BT_CONNECT2: 28220d1803aSAndrei Emeltchenko return "BT_CONNECT2"; 28320d1803aSAndrei Emeltchenko case BT_CONFIG: 28420d1803aSAndrei Emeltchenko return "BT_CONFIG"; 28520d1803aSAndrei Emeltchenko case BT_DISCONN: 28620d1803aSAndrei Emeltchenko return "BT_DISCONN"; 28720d1803aSAndrei Emeltchenko case BT_CLOSED: 28820d1803aSAndrei Emeltchenko return "BT_CLOSED"; 28920d1803aSAndrei Emeltchenko } 29020d1803aSAndrei Emeltchenko 29120d1803aSAndrei Emeltchenko return "invalid state"; 29220d1803aSAndrei Emeltchenko } 29320d1803aSAndrei Emeltchenko 2941da177e4SLinus Torvalds /* BD Address */ 2951da177e4SLinus Torvalds typedef struct { 2961da177e4SLinus Torvalds __u8 b[6]; 29766c853ccSGustavo F. Padovan } __packed bdaddr_t; 2981da177e4SLinus Torvalds 299591f47f3SAndre Guedes /* BD Address type */ 300591f47f3SAndre Guedes #define BDADDR_BREDR 0x00 301591f47f3SAndre Guedes #define BDADDR_LE_PUBLIC 0x01 302591f47f3SAndre Guedes #define BDADDR_LE_RANDOM 0x02 303591f47f3SAndre Guedes 30421fcf572SPavel Machek static inline bool bdaddr_type_is_valid(u8 type) 305679efe2bSJohan Hedberg { 306679efe2bSJohan Hedberg switch (type) { 307679efe2bSJohan Hedberg case BDADDR_BREDR: 308679efe2bSJohan Hedberg case BDADDR_LE_PUBLIC: 309679efe2bSJohan Hedberg case BDADDR_LE_RANDOM: 310679efe2bSJohan Hedberg return true; 311679efe2bSJohan Hedberg } 312679efe2bSJohan Hedberg 313679efe2bSJohan Hedberg return false; 314679efe2bSJohan Hedberg } 315679efe2bSJohan Hedberg 31621fcf572SPavel Machek static inline bool bdaddr_type_is_le(u8 type) 317679efe2bSJohan Hedberg { 318679efe2bSJohan Hedberg switch (type) { 319679efe2bSJohan Hedberg case BDADDR_LE_PUBLIC: 320679efe2bSJohan Hedberg case BDADDR_LE_RANDOM: 321679efe2bSJohan Hedberg return true; 322679efe2bSJohan Hedberg } 323679efe2bSJohan Hedberg 324679efe2bSJohan Hedberg return false; 325679efe2bSJohan Hedberg } 326679efe2bSJohan Hedberg 3271da177e4SLinus Torvalds #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 328a59ac2f7SMarcel Holtmann #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}) 3291da177e4SLinus Torvalds 3301da177e4SLinus Torvalds /* Copy, swap, convert BD Address */ 331f53c20e9SDavid Herrmann static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2) 3321da177e4SLinus Torvalds { 3331da177e4SLinus Torvalds return memcmp(ba1, ba2, sizeof(bdaddr_t)); 3341da177e4SLinus Torvalds } 335f53c20e9SDavid Herrmann static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src) 3361da177e4SLinus Torvalds { 3371da177e4SLinus Torvalds memcpy(dst, src, sizeof(bdaddr_t)); 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 34065bce462SLoic Poulain void baswap(bdaddr_t *dst, const bdaddr_t *src); 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvalds /* Common socket structures and functions */ 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds #define bt_sk(__sk) ((struct bt_sock *) __sk) 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds struct bt_sock { 3471da177e4SLinus Torvalds struct sock sk; 3481da177e4SLinus Torvalds struct list_head accept_q; 3491da177e4SLinus Torvalds struct sock *parent; 350c5daa683SGustavo Padovan unsigned long flags; 351d9763698SMarcel Holtmann void (*skb_msg_name)(struct sk_buff *, void *, int *); 35200398e1dSAlain Michaud void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *); 353c5daa683SGustavo Padovan }; 354c5daa683SGustavo Padovan 355c5daa683SGustavo Padovan enum { 356c5daa683SGustavo Padovan BT_SK_DEFER_SETUP, 357c5daa683SGustavo Padovan BT_SK_SUSPEND, 3581da177e4SLinus Torvalds }; 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds struct bt_sock_list { 3611da177e4SLinus Torvalds struct hlist_head head; 3621da177e4SLinus Torvalds rwlock_t lock; 363256a06c8SMasatake YAMATO #ifdef CONFIG_PROC_FS 364256a06c8SMasatake YAMATO int (* custom_seq_show)(struct seq_file *, void *); 365256a06c8SMasatake YAMATO #endif 3661da177e4SLinus Torvalds }; 3671da177e4SLinus Torvalds 368ec1b4cf7SStephen Hemminger int bt_sock_register(int proto, const struct net_proto_family *ops); 369be9f97f0SDavid Herrmann void bt_sock_unregister(int proto); 3701da177e4SLinus Torvalds void bt_sock_link(struct bt_sock_list *l, struct sock *s); 3711da177e4SLinus Torvalds void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 3721b784140SYing Xue int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, 3731b784140SYing Xue int flags); 3741b784140SYing Xue int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, 3751b784140SYing Xue size_t len, int flags); 376a11e1d43SLinus Torvalds __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait); 3773241ad82SMarcel Holtmann int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 3781da177e4SLinus Torvalds int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 379da891217SGavin Li int bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags); 3801da177e4SLinus Torvalds 381c4f5627fSMatthias Kaehlcke void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh); 3821da177e4SLinus Torvalds void bt_accept_unlink(struct sock *sk); 3831da177e4SLinus Torvalds struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds /* Skb helpers */ 38600e3112cSMat Martineau struct l2cap_ctrl { 38721fcf572SPavel Machek u8 sframe:1, 38800e3112cSMat Martineau poll:1, 38900e3112cSMat Martineau final:1, 39000e3112cSMat Martineau fcs:1, 39100e3112cSMat Martineau sar:2, 39200e3112cSMat Martineau super:2; 39321fcf572SPavel Machek 39421fcf572SPavel Machek u16 reqseq; 39521fcf572SPavel Machek u16 txseq; 39621fcf572SPavel Machek u8 retries; 397a4368ff3SJohan Hedberg __le16 psm; 398a4368ff3SJohan Hedberg bdaddr_t bdaddr; 399a4368ff3SJohan Hedberg struct l2cap_chan *chan; 40000e3112cSMat Martineau }; 40100e3112cSMat Martineau 40200398e1dSAlain Michaud struct sco_ctrl { 40300398e1dSAlain Michaud u8 pkt_status; 40400398e1dSAlain Michaud }; 40500398e1dSAlain Michaud 4063119ae95SJohan Hedberg struct hci_dev; 4073119ae95SJohan Hedberg 4081904a853SMarcel Holtmann typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode); 409e6214487SJohan Hedberg typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status, 410e6214487SJohan Hedberg u16 opcode, struct sk_buff *skb); 4113119ae95SJohan Hedberg 41244d27137SJohan Hedberg #define HCI_REQ_START BIT(0) 41344d27137SJohan Hedberg #define HCI_REQ_SKB BIT(1) 41444d27137SJohan Hedberg 415242c0ebdSMarcel Holtmann struct hci_ctrl { 416cba6b758SLuiz Augusto von Dentz struct sock *sk; 41721fcf572SPavel Machek u16 opcode; 41844d27137SJohan Hedberg u8 req_flags; 419242c0ebdSMarcel Holtmann u8 req_event; 42044d27137SJohan Hedberg union { 421242c0ebdSMarcel Holtmann hci_req_complete_t req_complete; 422242c0ebdSMarcel Holtmann hci_req_complete_skb_t req_complete_skb; 423db6e3e8dSJohan Hedberg }; 42444d27137SJohan Hedberg }; 425db6e3e8dSJohan Hedberg 4268aca46f9SLuiz Augusto von Dentz struct mgmt_ctrl { 4278aca46f9SLuiz Augusto von Dentz struct hci_dev *hdev; 4288aca46f9SLuiz Augusto von Dentz u16 opcode; 4298aca46f9SLuiz Augusto von Dentz }; 4308aca46f9SLuiz Augusto von Dentz 4311da177e4SLinus Torvalds struct bt_skb_cb { 43221fcf572SPavel Machek u8 pkt_type; 43321fcf572SPavel Machek u8 force_active; 43421fcf572SPavel Machek u16 expect; 43521fcf572SPavel Machek u8 incoming:1; 436db6e3e8dSJohan Hedberg union { 437a4368ff3SJohan Hedberg struct l2cap_ctrl l2cap; 43800398e1dSAlain Michaud struct sco_ctrl sco; 439242c0ebdSMarcel Holtmann struct hci_ctrl hci; 4408aca46f9SLuiz Augusto von Dentz struct mgmt_ctrl mgmt; 441db6e3e8dSJohan Hedberg }; 4421da177e4SLinus Torvalds }; 4431c2acffbSGustavo F. Padovan #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 4441da177e4SLinus Torvalds 445f5c4a42aSMarcel Holtmann #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type 446f5c4a42aSMarcel Holtmann #define hci_skb_expect(skb) bt_cb((skb))->expect 447f5c4a42aSMarcel Holtmann #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode 44885b56857SLuiz Augusto von Dentz #define hci_skb_event(skb) bt_cb((skb))->hci.req_event 449cba6b758SLuiz Augusto von Dentz #define hci_skb_sk(skb) bt_cb((skb))->hci.sk 450f5c4a42aSMarcel Holtmann 451dd0fc66fSAl Viro static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 4521da177e4SLinus Torvalds { 4531da177e4SLinus Torvalds struct sk_buff *skb; 4541da177e4SLinus Torvalds 455c3c7ea65SGustavo Padovan skb = alloc_skb(len + BT_SKB_RESERVE, how); 4565fcc86bdSJohan Hedberg if (skb) 4571da177e4SLinus Torvalds skb_reserve(skb, BT_SKB_RESERVE); 4581da177e4SLinus Torvalds return skb; 4591da177e4SLinus Torvalds } 4601da177e4SLinus Torvalds 4615a9d0a3fSWaldemar Rymarkiewicz static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, 4625a9d0a3fSWaldemar Rymarkiewicz unsigned long len, int nb, int *err) 4631da177e4SLinus Torvalds { 4641da177e4SLinus Torvalds struct sk_buff *skb; 4651da177e4SLinus Torvalds 466c3c7ea65SGustavo Padovan skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err); 4675fcc86bdSJohan Hedberg if (skb) 4681da177e4SLinus Torvalds skb_reserve(skb, BT_SKB_RESERVE); 469e454c844SGustavo F. Padovan 470e454c844SGustavo F. Padovan if (!skb && *err) 471e454c844SGustavo F. Padovan return NULL; 472e454c844SGustavo F. Padovan 473e454c844SGustavo F. Padovan *err = sock_error(sk); 474e454c844SGustavo F. Padovan if (*err) 475e454c844SGustavo F. Padovan goto out; 476e454c844SGustavo F. Padovan 477e454c844SGustavo F. Padovan if (sk->sk_shutdown) { 478e454c844SGustavo F. Padovan *err = -ECONNRESET; 479e454c844SGustavo F. Padovan goto out; 480e454c844SGustavo F. Padovan } 4811da177e4SLinus Torvalds 4821da177e4SLinus Torvalds return skb; 483e454c844SGustavo F. Padovan 484e454c844SGustavo F. Padovan out: 485e454c844SGustavo F. Padovan kfree_skb(skb); 486e454c844SGustavo F. Padovan return NULL; 4871da177e4SLinus Torvalds } 4881da177e4SLinus Torvalds 48938f64f65SLuiz Augusto von Dentz /* Shall not be called with lock_sock held */ 49038f64f65SLuiz Augusto von Dentz static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk, 49138f64f65SLuiz Augusto von Dentz struct msghdr *msg, 49238f64f65SLuiz Augusto von Dentz size_t len, size_t mtu, 49338f64f65SLuiz Augusto von Dentz size_t headroom, size_t tailroom) 49438f64f65SLuiz Augusto von Dentz { 49538f64f65SLuiz Augusto von Dentz struct sk_buff *skb; 49638f64f65SLuiz Augusto von Dentz size_t size = min_t(size_t, len, mtu); 49738f64f65SLuiz Augusto von Dentz int err; 49838f64f65SLuiz Augusto von Dentz 49938f64f65SLuiz Augusto von Dentz skb = bt_skb_send_alloc(sk, size + headroom + tailroom, 50038f64f65SLuiz Augusto von Dentz msg->msg_flags & MSG_DONTWAIT, &err); 50138f64f65SLuiz Augusto von Dentz if (!skb) 50238f64f65SLuiz Augusto von Dentz return ERR_PTR(err); 50338f64f65SLuiz Augusto von Dentz 50438f64f65SLuiz Augusto von Dentz skb_reserve(skb, headroom); 50538f64f65SLuiz Augusto von Dentz skb_tailroom_reserve(skb, mtu, tailroom); 50638f64f65SLuiz Augusto von Dentz 50738f64f65SLuiz Augusto von Dentz if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) { 50838f64f65SLuiz Augusto von Dentz kfree_skb(skb); 50938f64f65SLuiz Augusto von Dentz return ERR_PTR(-EFAULT); 51038f64f65SLuiz Augusto von Dentz } 51138f64f65SLuiz Augusto von Dentz 51238f64f65SLuiz Augusto von Dentz skb->priority = sk->sk_priority; 51338f64f65SLuiz Augusto von Dentz 51438f64f65SLuiz Augusto von Dentz return skb; 51538f64f65SLuiz Augusto von Dentz } 51638f64f65SLuiz Augusto von Dentz 51797e4e802SLuiz Augusto von Dentz /* Similar to bt_skb_sendmsg but can split the msg into multiple fragments 51897e4e802SLuiz Augusto von Dentz * accourding to the MTU. 51997e4e802SLuiz Augusto von Dentz */ 52097e4e802SLuiz Augusto von Dentz static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk, 52197e4e802SLuiz Augusto von Dentz struct msghdr *msg, 52297e4e802SLuiz Augusto von Dentz size_t len, size_t mtu, 52397e4e802SLuiz Augusto von Dentz size_t headroom, size_t tailroom) 52497e4e802SLuiz Augusto von Dentz { 52597e4e802SLuiz Augusto von Dentz struct sk_buff *skb, **frag; 52697e4e802SLuiz Augusto von Dentz 52797e4e802SLuiz Augusto von Dentz skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom); 5286f43f616SDan Carpenter if (IS_ERR(skb)) 52997e4e802SLuiz Augusto von Dentz return skb; 53097e4e802SLuiz Augusto von Dentz 53197e4e802SLuiz Augusto von Dentz len -= skb->len; 53297e4e802SLuiz Augusto von Dentz if (!len) 53397e4e802SLuiz Augusto von Dentz return skb; 53497e4e802SLuiz Augusto von Dentz 53597e4e802SLuiz Augusto von Dentz /* Add remaining data over MTU as continuation fragments */ 53697e4e802SLuiz Augusto von Dentz frag = &skb_shinfo(skb)->frag_list; 53797e4e802SLuiz Augusto von Dentz while (len) { 53897e4e802SLuiz Augusto von Dentz struct sk_buff *tmp; 53997e4e802SLuiz Augusto von Dentz 54097e4e802SLuiz Augusto von Dentz tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom); 541266191aaSLuiz Augusto von Dentz if (IS_ERR(tmp)) { 54229fb6083SLuiz Augusto von Dentz return skb; 54397e4e802SLuiz Augusto von Dentz } 54497e4e802SLuiz Augusto von Dentz 54597e4e802SLuiz Augusto von Dentz len -= tmp->len; 54697e4e802SLuiz Augusto von Dentz 54797e4e802SLuiz Augusto von Dentz *frag = tmp; 54897e4e802SLuiz Augusto von Dentz frag = &(*frag)->next; 54997e4e802SLuiz Augusto von Dentz } 55097e4e802SLuiz Augusto von Dentz 55197e4e802SLuiz Augusto von Dentz return skb; 55297e4e802SLuiz Augusto von Dentz } 55397e4e802SLuiz Augusto von Dentz 55421fcf572SPavel Machek int bt_to_errno(u16 code); 555ca2045e0SLuiz Augusto von Dentz __u8 bt_status(int err); 5561da177e4SLinus Torvalds 5576befc644SMarcel Holtmann void hci_sock_set_flag(struct sock *sk, int nr); 5586befc644SMarcel Holtmann void hci_sock_clear_flag(struct sock *sk, int nr); 559c85be545SMarcel Holtmann int hci_sock_test_flag(struct sock *sk, int nr); 560d0f172b1SJohan Hedberg unsigned short hci_sock_get_channel(struct sock *sk); 56170ecce91SMarcel Holtmann u32 hci_sock_get_cookie(struct sock *sk); 5626befc644SMarcel Holtmann 563e74e58f8SJoe Perches int hci_sock_init(void); 564e74e58f8SJoe Perches void hci_sock_cleanup(void); 5656516455dSMarcel Holtmann 566e74e58f8SJoe Perches int bt_sysfs_init(void); 567e74e58f8SJoe Perches void bt_sysfs_cleanup(void); 5686516455dSMarcel Holtmann 569e74e58f8SJoe Perches int bt_procfs_init(struct net *net, const char *name, 570256a06c8SMasatake YAMATO struct bt_sock_list *sk_list, 571256a06c8SMasatake YAMATO int (*seq_show)(struct seq_file *, void *)); 572e74e58f8SJoe Perches void bt_procfs_cleanup(struct net *net, const char *name); 573256a06c8SMasatake YAMATO 574aef7d97cSMarcel Holtmann extern struct dentry *bt_debugfs; 575be9d1227SMarcel Holtmann 57664274518SGustavo F. Padovan int l2cap_init(void); 57764274518SGustavo F. Padovan void l2cap_exit(void); 57864274518SGustavo F. Padovan 579ff50e8afSArron Wang #if IS_ENABLED(CONFIG_BT_BREDR) 58064274518SGustavo F. Padovan int sco_init(void); 58164274518SGustavo F. Padovan void sco_exit(void); 582ff50e8afSArron Wang #else 583ff50e8afSArron Wang static inline int sco_init(void) 584ff50e8afSArron Wang { 585ff50e8afSArron Wang return 0; 586ff50e8afSArron Wang } 587ff50e8afSArron Wang 588ff50e8afSArron Wang static inline void sco_exit(void) 589ff50e8afSArron Wang { 590ff50e8afSArron Wang } 591ff50e8afSArron Wang #endif 59264274518SGustavo F. Padovan 593*ccf74f23SLuiz Augusto von Dentz #if IS_ENABLED(CONFIG_BT_LE) 594*ccf74f23SLuiz Augusto von Dentz int iso_init(void); 595*ccf74f23SLuiz Augusto von Dentz int iso_exit(void); 596*ccf74f23SLuiz Augusto von Dentz bool iso_enabled(void); 597*ccf74f23SLuiz Augusto von Dentz #else 598*ccf74f23SLuiz Augusto von Dentz static inline int iso_init(void) 599*ccf74f23SLuiz Augusto von Dentz { 600*ccf74f23SLuiz Augusto von Dentz return 0; 601*ccf74f23SLuiz Augusto von Dentz } 602*ccf74f23SLuiz Augusto von Dentz 603*ccf74f23SLuiz Augusto von Dentz static inline int iso_exit(void) 604*ccf74f23SLuiz Augusto von Dentz { 605*ccf74f23SLuiz Augusto von Dentz return 0; 606*ccf74f23SLuiz Augusto von Dentz } 607*ccf74f23SLuiz Augusto von Dentz 608*ccf74f23SLuiz Augusto von Dentz static inline bool iso_enabled(void) 609*ccf74f23SLuiz Augusto von Dentz { 610*ccf74f23SLuiz Augusto von Dentz return false; 611*ccf74f23SLuiz Augusto von Dentz } 612*ccf74f23SLuiz Augusto von Dentz #endif 613*ccf74f23SLuiz Augusto von Dentz 6146d785aa3SJohan Hedberg int mgmt_init(void); 6156d785aa3SJohan Hedberg void mgmt_exit(void); 6166d785aa3SJohan Hedberg 617d22015aaSOctavian Purdila void bt_sock_reclassify_lock(struct sock *sk, int proto); 618d22015aaSOctavian Purdila 6191da177e4SLinus Torvalds #endif /* __BLUETOOTH_H */ 620