Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
| 4 | |
| 5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License version 2 as |
| 9 | published by the Free Software Foundation; |
| 10 | |
| 11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| 15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | |
| 20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| 22 | SOFTWARE IS DISCLAIMED. |
| 23 | */ |
| 24 | |
| 25 | #ifndef __BLUETOOTH_H |
| 26 | #define __BLUETOOTH_H |
| 27 | |
| 28 | #include <asm/types.h> |
| 29 | #include <asm/byteorder.h> |
| 30 | #include <linux/list.h> |
| 31 | #include <linux/poll.h> |
| 32 | #include <net/sock.h> |
| 33 | |
| 34 | #ifndef AF_BLUETOOTH |
| 35 | #define AF_BLUETOOTH 31 |
| 36 | #define PF_BLUETOOTH AF_BLUETOOTH |
| 37 | #endif |
| 38 | |
Andrei Emeltchenko | d095c1e | 2011-12-01 14:33:27 +0200 | [diff] [blame] | 39 | /* Bluetooth versions */ |
| 40 | #define BLUETOOTH_VER_1_1 1 |
| 41 | #define BLUETOOTH_VER_1_2 2 |
| 42 | #define BLUETOOTH_VER_2_0 3 |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | /* Reserv for core and drivers use */ |
| 45 | #define BT_SKB_RESERVE 8 |
| 46 | |
| 47 | #define BTPROTO_L2CAP 0 |
| 48 | #define BTPROTO_HCI 1 |
| 49 | #define BTPROTO_SCO 2 |
| 50 | #define BTPROTO_RFCOMM 3 |
| 51 | #define BTPROTO_BNEP 4 |
| 52 | #define BTPROTO_CMTP 5 |
| 53 | #define BTPROTO_HIDP 6 |
| 54 | #define BTPROTO_AVDTP 7 |
| 55 | |
| 56 | #define SOL_HCI 0 |
| 57 | #define SOL_L2CAP 6 |
| 58 | #define SOL_SCO 17 |
| 59 | #define SOL_RFCOMM 18 |
| 60 | |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 61 | #define BT_SECURITY 4 |
| 62 | struct bt_security { |
| 63 | __u8 level; |
Vinicius Costa Gomes | 8f36011 | 2011-07-08 18:31:46 -0300 | [diff] [blame] | 64 | __u8 key_size; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 65 | }; |
| 66 | #define BT_SECURITY_SDP 0 |
| 67 | #define BT_SECURITY_LOW 1 |
| 68 | #define BT_SECURITY_MEDIUM 2 |
| 69 | #define BT_SECURITY_HIGH 3 |
| 70 | |
Marcel Holtmann | c4f912e | 2009-01-15 21:52:16 +0100 | [diff] [blame] | 71 | #define BT_DEFER_SETUP 7 |
| 72 | |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 73 | #define BT_FLUSHABLE 8 |
| 74 | |
| 75 | #define BT_FLUSHABLE_OFF 0 |
| 76 | #define BT_FLUSHABLE_ON 1 |
| 77 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 78 | #define BT_POWER 9 |
| 79 | struct bt_power { |
| 80 | __u8 force_active; |
| 81 | }; |
| 82 | #define BT_POWER_FORCE_ACTIVE_OFF 0 |
| 83 | #define BT_POWER_FORCE_ACTIVE_ON 1 |
| 84 | |
Mat Martineau | c14968b | 2011-11-02 16:18:28 -0700 | [diff] [blame] | 85 | #define BT_CHANNEL_POLICY 10 |
| 86 | |
| 87 | /* BR/EDR only (default policy) |
| 88 | * AMP controllers cannot be used. |
| 89 | * Channel move requests from the remote device are denied. |
| 90 | * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. |
| 91 | */ |
| 92 | #define BT_CHANNEL_POLICY_BREDR_ONLY 0 |
| 93 | |
| 94 | /* BR/EDR Preferred |
| 95 | * Allow use of AMP controllers. |
| 96 | * If the L2CAP channel is currently on AMP, move it to BR/EDR. |
| 97 | * Channel move requests from the remote device are allowed. |
| 98 | */ |
| 99 | #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 |
| 100 | |
| 101 | /* AMP Preferred |
| 102 | * Allow use of AMP controllers |
| 103 | * If the L2CAP channel is currently on BR/EDR and AMP controller |
| 104 | * resources are available, initiate a channel move to AMP. |
| 105 | * Channel move requests from the remote device are allowed. |
| 106 | * If the L2CAP socket has not been connected yet, try to create |
| 107 | * and configure the channel directly on an AMP controller rather |
| 108 | * than BR/EDR. |
| 109 | */ |
| 110 | #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 |
| 111 | |
Joe Perches | b9075fa | 2011-10-31 17:11:33 -0700 | [diff] [blame] | 112 | __printf(2, 3) |
Joe Perches | e1447d8 | 2011-06-30 19:15:37 -0300 | [diff] [blame] | 113 | int bt_printk(const char *level, const char *fmt, ...); |
| 114 | |
| 115 | #define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg) |
| 116 | #define BT_ERR(fmt, arg...) bt_printk(KERN_ERR, pr_fmt(fmt), ##arg) |
| 117 | #define BT_DBG(fmt, arg...) pr_debug(fmt "\n", ##arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | /* Connection and socket states */ |
| 120 | enum { |
| 121 | BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ |
| 122 | BT_OPEN, |
| 123 | BT_BOUND, |
| 124 | BT_LISTEN, |
| 125 | BT_CONNECT, |
| 126 | BT_CONNECT2, |
| 127 | BT_CONFIG, |
| 128 | BT_DISCONN, |
| 129 | BT_CLOSED |
| 130 | }; |
| 131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | /* BD Address */ |
| 133 | typedef struct { |
| 134 | __u8 b[6]; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 135 | } __packed bdaddr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
| 137 | #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) |
| 138 | #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}}) |
| 139 | |
| 140 | /* Copy, swap, convert BD Address */ |
| 141 | static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2) |
| 142 | { |
| 143 | return memcmp(ba1, ba2, sizeof(bdaddr_t)); |
| 144 | } |
| 145 | static inline void bacpy(bdaddr_t *dst, bdaddr_t *src) |
| 146 | { |
| 147 | memcpy(dst, src, sizeof(bdaddr_t)); |
| 148 | } |
| 149 | |
| 150 | void baswap(bdaddr_t *dst, bdaddr_t *src); |
| 151 | char *batostr(bdaddr_t *ba); |
| 152 | bdaddr_t *strtoba(char *str); |
| 153 | |
| 154 | /* Common socket structures and functions */ |
| 155 | |
| 156 | #define bt_sk(__sk) ((struct bt_sock *) __sk) |
| 157 | |
| 158 | struct bt_sock { |
| 159 | struct sock sk; |
| 160 | bdaddr_t src; |
| 161 | bdaddr_t dst; |
| 162 | struct list_head accept_q; |
| 163 | struct sock *parent; |
Marcel Holtmann | c4f912e | 2009-01-15 21:52:16 +0100 | [diff] [blame] | 164 | u32 defer_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | }; |
| 166 | |
| 167 | struct bt_sock_list { |
| 168 | struct hlist_head head; |
| 169 | rwlock_t lock; |
| 170 | }; |
| 171 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 172 | int bt_sock_register(int proto, const struct net_proto_family *ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | int bt_sock_unregister(int proto); |
| 174 | void bt_sock_link(struct bt_sock_list *l, struct sock *s); |
| 175 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); |
Waldemar Rymarkiewicz | 5a9d0a3 | 2011-06-07 11:18:06 +0200 | [diff] [blame] | 176 | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
| 177 | struct msghdr *msg, size_t len, int flags); |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 178 | int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, |
| 179 | struct msghdr *msg, size_t len, int flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 181 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); |
| 183 | |
| 184 | void bt_accept_enqueue(struct sock *parent, struct sock *sk); |
| 185 | void bt_accept_unlink(struct sock *sk); |
| 186 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); |
| 187 | |
| 188 | /* Skb helpers */ |
| 189 | struct bt_skb_cb { |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 190 | __u8 pkt_type; |
| 191 | __u8 incoming; |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 192 | __u16 expect; |
Andrei Emeltchenko | 836be93 | 2011-10-17 12:19:57 +0300 | [diff] [blame] | 193 | __u16 tx_seq; |
Gustavo F. Padovan | e90bac0 | 2009-08-20 22:26:00 -0300 | [diff] [blame] | 194 | __u8 retries; |
Gustavo F. Padovan | 8f17154 | 2009-08-20 22:26:03 -0300 | [diff] [blame] | 195 | __u8 sar; |
Johan Hedberg | a40c406 | 2010-12-08 00:21:07 +0200 | [diff] [blame] | 196 | unsigned short channel; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 197 | __u8 force_active; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | }; |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 199 | #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 201 | static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | { |
| 203 | struct sk_buff *skb; |
| 204 | |
| 205 | if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) { |
| 206 | skb_reserve(skb, BT_SKB_RESERVE); |
| 207 | bt_cb(skb)->incoming = 0; |
| 208 | } |
| 209 | return skb; |
| 210 | } |
| 211 | |
Waldemar Rymarkiewicz | 5a9d0a3 | 2011-06-07 11:18:06 +0200 | [diff] [blame] | 212 | static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, |
| 213 | unsigned long len, int nb, int *err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | { |
| 215 | struct sk_buff *skb; |
| 216 | |
Gustavo F. Padovan | e454c84 | 2010-09-21 16:31:11 -0300 | [diff] [blame] | 217 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) { |
| 219 | skb_reserve(skb, BT_SKB_RESERVE); |
| 220 | bt_cb(skb)->incoming = 0; |
| 221 | } |
Gustavo F. Padovan | e454c84 | 2010-09-21 16:31:11 -0300 | [diff] [blame] | 222 | lock_sock(sk); |
| 223 | |
| 224 | if (!skb && *err) |
| 225 | return NULL; |
| 226 | |
| 227 | *err = sock_error(sk); |
| 228 | if (*err) |
| 229 | goto out; |
| 230 | |
| 231 | if (sk->sk_shutdown) { |
| 232 | *err = -ECONNRESET; |
| 233 | goto out; |
| 234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | return skb; |
Gustavo F. Padovan | e454c84 | 2010-09-21 16:31:11 -0300 | [diff] [blame] | 237 | |
| 238 | out: |
| 239 | kfree_skb(skb); |
| 240 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | } |
| 242 | |
Joe Perches | e175072 | 2011-06-29 18:18:29 -0700 | [diff] [blame] | 243 | int bt_to_errno(__u16 code); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 245 | extern int hci_sock_init(void); |
Tobias Klauser | 04005dd | 2008-03-05 18:47:03 -0800 | [diff] [blame] | 246 | extern void hci_sock_cleanup(void); |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 247 | |
| 248 | extern int bt_sysfs_init(void); |
| 249 | extern void bt_sysfs_cleanup(void); |
| 250 | |
Marcel Holtmann | aef7d97 | 2010-03-21 05:27:45 +0100 | [diff] [blame] | 251 | extern struct dentry *bt_debugfs; |
Marcel Holtmann | be9d122 | 2005-11-08 09:57:38 -0800 | [diff] [blame] | 252 | |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 253 | int l2cap_init(void); |
| 254 | void l2cap_exit(void); |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 255 | |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 256 | int sco_init(void); |
| 257 | void sco_exit(void); |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 258 | |
Octavian Purdila | b5a30dd | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 259 | void bt_sock_reclassify_lock(struct sock *sk, int proto); |
| 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | #endif /* __BLUETOOTH_H */ |