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 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 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 61 #define BT_SECURITY 4 62 struct bt_security { 63 __u8 level; 64 __u8 key_size; 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 71 #define BT_DEFER_SETUP 7 72 73 #define BT_FLUSHABLE 8 74 75 #define BT_FLUSHABLE_OFF 0 76 #define BT_FLUSHABLE_ON 1 77 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 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 2 111 112 __printf(2, 3) 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) 118 119 /* 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 }; 131 132 /* BD Address */ 133 typedef struct { 134 __u8 b[6]; 135 } __packed bdaddr_t; 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; 164 u32 defer_setup; 165 }; 166 167 struct bt_sock_list { 168 struct hlist_head head; 169 rwlock_t lock; 170 }; 171 172 int bt_sock_register(int proto, const struct net_proto_family *ops); 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); 176 int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, 177 struct msghdr *msg, size_t len, int flags); 178 int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, 179 struct msghdr *msg, size_t len, int flags); 180 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); 181 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 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 { 190 __u8 pkt_type; 191 __u8 incoming; 192 __u16 expect; 193 __u16 tx_seq; 194 __u8 retries; 195 __u8 sar; 196 unsigned short channel; 197 __u8 force_active; 198 }; 199 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 200 201 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 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 } 211 212 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, 213 unsigned long len, int nb, int *err) 214 { 215 struct sk_buff *skb; 216 217 release_sock(sk); 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 } 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 } 235 236 return skb; 237 238 out: 239 kfree_skb(skb); 240 return NULL; 241 } 242 243 int bt_to_errno(__u16 code); 244 245 extern int hci_sock_init(void); 246 extern void hci_sock_cleanup(void); 247 248 extern int bt_sysfs_init(void); 249 extern void bt_sysfs_cleanup(void); 250 251 extern struct dentry *bt_debugfs; 252 253 int l2cap_init(void); 254 void l2cap_exit(void); 255 256 int sco_init(void); 257 void sco_exit(void); 258 259 #endif /* __BLUETOOTH_H */ 260