1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (C) 2000-2001 Qualcomm Incorporated 4 5 Written 2000,2001 by Maxim Krasnyansky <[email protected]> 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 39 /* Reserv for core and drivers use */ 40 #define BT_SKB_RESERVE 8 41 42 #define BTPROTO_L2CAP 0 43 #define BTPROTO_HCI 1 44 #define BTPROTO_SCO 2 45 #define BTPROTO_RFCOMM 3 46 #define BTPROTO_BNEP 4 47 #define BTPROTO_CMTP 5 48 #define BTPROTO_HIDP 6 49 #define BTPROTO_AVDTP 7 50 51 #define SOL_HCI 0 52 #define SOL_L2CAP 6 53 #define SOL_SCO 17 54 #define SOL_RFCOMM 18 55 56 #define BT_SECURITY 4 57 struct bt_security { 58 __u8 level; 59 __u8 key_size; 60 }; 61 #define BT_SECURITY_SDP 0 62 #define BT_SECURITY_LOW 1 63 #define BT_SECURITY_MEDIUM 2 64 #define BT_SECURITY_HIGH 3 65 66 #define BT_DEFER_SETUP 7 67 68 #define BT_FLUSHABLE 8 69 70 #define BT_FLUSHABLE_OFF 0 71 #define BT_FLUSHABLE_ON 1 72 73 #define BT_POWER 9 74 struct bt_power { 75 __u8 force_active; 76 }; 77 #define BT_POWER_FORCE_ACTIVE_OFF 0 78 #define BT_POWER_FORCE_ACTIVE_ON 1 79 80 #define BT_CHANNEL_POLICY 10 81 82 /* BR/EDR only (default policy) 83 * AMP controllers cannot be used. 84 * Channel move requests from the remote device are denied. 85 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. 86 */ 87 #define BT_CHANNEL_POLICY_BREDR_ONLY 0 88 89 /* BR/EDR Preferred 90 * Allow use of AMP controllers. 91 * If the L2CAP channel is currently on AMP, move it to BR/EDR. 92 * Channel move requests from the remote device are allowed. 93 */ 94 #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 95 96 /* AMP Preferred 97 * Allow use of AMP controllers 98 * If the L2CAP channel is currently on BR/EDR and AMP controller 99 * resources are available, initiate a channel move to AMP. 100 * Channel move requests from the remote device are allowed. 101 * If the L2CAP socket has not been connected yet, try to create 102 * and configure the channel directly on an AMP controller rather 103 * than BR/EDR. 104 */ 105 #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 106 107 __printf(2, 3) 108 int bt_printk(const char *level, const char *fmt, ...); 109 110 #define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg) 111 #define BT_ERR(fmt, arg...) bt_printk(KERN_ERR, pr_fmt(fmt), ##arg) 112 #define BT_DBG(fmt, arg...) pr_debug(fmt "\n", ##arg) 113 114 /* Connection and socket states */ 115 enum { 116 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 117 BT_OPEN, 118 BT_BOUND, 119 BT_LISTEN, 120 BT_CONNECT, 121 BT_CONNECT2, 122 BT_CONFIG, 123 BT_DISCONN, 124 BT_CLOSED 125 }; 126 127 /* BD Address */ 128 typedef struct { 129 __u8 b[6]; 130 } __packed bdaddr_t; 131 132 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 133 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}}) 134 135 /* Copy, swap, convert BD Address */ 136 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2) 137 { 138 return memcmp(ba1, ba2, sizeof(bdaddr_t)); 139 } 140 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src) 141 { 142 memcpy(dst, src, sizeof(bdaddr_t)); 143 } 144 145 void baswap(bdaddr_t *dst, bdaddr_t *src); 146 char *batostr(bdaddr_t *ba); 147 bdaddr_t *strtoba(char *str); 148 149 /* Common socket structures and functions */ 150 151 #define bt_sk(__sk) ((struct bt_sock *) __sk) 152 153 struct bt_sock { 154 struct sock sk; 155 bdaddr_t src; 156 bdaddr_t dst; 157 struct list_head accept_q; 158 struct sock *parent; 159 u32 defer_setup; 160 }; 161 162 struct bt_sock_list { 163 struct hlist_head head; 164 rwlock_t lock; 165 }; 166 167 int bt_sock_register(int proto, const struct net_proto_family *ops); 168 int bt_sock_unregister(int proto); 169 void bt_sock_link(struct bt_sock_list *l, struct sock *s); 170 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 171 int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, 172 struct msghdr *msg, size_t len, int flags); 173 int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, 174 struct msghdr *msg, size_t len, int flags); 175 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); 176 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 177 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 178 179 void bt_accept_enqueue(struct sock *parent, struct sock *sk); 180 void bt_accept_unlink(struct sock *sk); 181 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 182 183 /* Skb helpers */ 184 struct bt_skb_cb { 185 __u8 pkt_type; 186 __u8 incoming; 187 __u16 expect; 188 __u16 tx_seq; 189 __u8 retries; 190 __u8 sar; 191 unsigned short channel; 192 __u8 force_active; 193 }; 194 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 195 196 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 197 { 198 struct sk_buff *skb; 199 200 if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) { 201 skb_reserve(skb, BT_SKB_RESERVE); 202 bt_cb(skb)->incoming = 0; 203 } 204 return skb; 205 } 206 207 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, 208 unsigned long len, int nb, int *err) 209 { 210 struct sk_buff *skb; 211 212 release_sock(sk); 213 if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) { 214 skb_reserve(skb, BT_SKB_RESERVE); 215 bt_cb(skb)->incoming = 0; 216 } 217 lock_sock(sk); 218 219 if (!skb && *err) 220 return NULL; 221 222 *err = sock_error(sk); 223 if (*err) 224 goto out; 225 226 if (sk->sk_shutdown) { 227 *err = -ECONNRESET; 228 goto out; 229 } 230 231 return skb; 232 233 out: 234 kfree_skb(skb); 235 return NULL; 236 } 237 238 int bt_to_errno(__u16 code); 239 240 extern int hci_sock_init(void); 241 extern void hci_sock_cleanup(void); 242 243 extern int bt_sysfs_init(void); 244 extern void bt_sysfs_cleanup(void); 245 246 extern struct dentry *bt_debugfs; 247 248 #ifdef CONFIG_BT_L2CAP 249 int l2cap_init(void); 250 void l2cap_exit(void); 251 #else 252 static inline int l2cap_init(void) 253 { 254 return 0; 255 } 256 257 static inline void l2cap_exit(void) 258 { 259 } 260 #endif 261 262 #ifdef CONFIG_BT_SCO 263 int sco_init(void); 264 void sco_exit(void); 265 #else 266 static inline int sco_init(void) 267 { 268 return 0; 269 } 270 271 static inline void sco_exit(void) 272 { 273 } 274 #endif 275 276 #endif /* __BLUETOOTH_H */ 277