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 /* 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 __attribute__((format (printf, 2, 3))) 81 int bt_printk(const char *level, const char *fmt, ...); 82 83 #define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg) 84 #define BT_ERR(fmt, arg...) bt_printk(KERN_ERR, pr_fmt(fmt), ##arg) 85 #define BT_DBG(fmt, arg...) pr_debug(fmt "\n", ##arg) 86 87 /* Connection and socket states */ 88 enum { 89 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 90 BT_OPEN, 91 BT_BOUND, 92 BT_LISTEN, 93 BT_CONNECT, 94 BT_CONNECT2, 95 BT_CONFIG, 96 BT_DISCONN, 97 BT_CLOSED 98 }; 99 100 /* BD Address */ 101 typedef struct { 102 __u8 b[6]; 103 } __packed bdaddr_t; 104 105 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 106 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}}) 107 108 /* Copy, swap, convert BD Address */ 109 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2) 110 { 111 return memcmp(ba1, ba2, sizeof(bdaddr_t)); 112 } 113 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src) 114 { 115 memcpy(dst, src, sizeof(bdaddr_t)); 116 } 117 118 void baswap(bdaddr_t *dst, bdaddr_t *src); 119 char *batostr(bdaddr_t *ba); 120 bdaddr_t *strtoba(char *str); 121 122 /* Common socket structures and functions */ 123 124 #define bt_sk(__sk) ((struct bt_sock *) __sk) 125 126 struct bt_sock { 127 struct sock sk; 128 bdaddr_t src; 129 bdaddr_t dst; 130 struct list_head accept_q; 131 struct sock *parent; 132 u32 defer_setup; 133 }; 134 135 struct bt_sock_list { 136 struct hlist_head head; 137 rwlock_t lock; 138 }; 139 140 int bt_sock_register(int proto, const struct net_proto_family *ops); 141 int bt_sock_unregister(int proto); 142 void bt_sock_link(struct bt_sock_list *l, struct sock *s); 143 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 144 int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, 145 struct msghdr *msg, size_t len, int flags); 146 int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, 147 struct msghdr *msg, size_t len, int flags); 148 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); 149 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 150 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 151 152 void bt_accept_enqueue(struct sock *parent, struct sock *sk); 153 void bt_accept_unlink(struct sock *sk); 154 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 155 156 /* Skb helpers */ 157 struct bt_skb_cb { 158 __u8 pkt_type; 159 __u8 incoming; 160 __u16 expect; 161 __u8 tx_seq; 162 __u8 retries; 163 __u8 sar; 164 unsigned short channel; 165 __u8 force_active; 166 }; 167 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 168 169 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 170 { 171 struct sk_buff *skb; 172 173 if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) { 174 skb_reserve(skb, BT_SKB_RESERVE); 175 bt_cb(skb)->incoming = 0; 176 } 177 return skb; 178 } 179 180 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, 181 unsigned long len, int nb, int *err) 182 { 183 struct sk_buff *skb; 184 185 release_sock(sk); 186 if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) { 187 skb_reserve(skb, BT_SKB_RESERVE); 188 bt_cb(skb)->incoming = 0; 189 } 190 lock_sock(sk); 191 192 if (!skb && *err) 193 return NULL; 194 195 *err = sock_error(sk); 196 if (*err) 197 goto out; 198 199 if (sk->sk_shutdown) { 200 *err = -ECONNRESET; 201 goto out; 202 } 203 204 return skb; 205 206 out: 207 kfree_skb(skb); 208 return NULL; 209 } 210 211 int bt_to_errno(__u16 code); 212 213 extern int hci_sock_init(void); 214 extern void hci_sock_cleanup(void); 215 216 extern int bt_sysfs_init(void); 217 extern void bt_sysfs_cleanup(void); 218 219 extern struct dentry *bt_debugfs; 220 221 #ifdef CONFIG_BT_L2CAP 222 int l2cap_init(void); 223 void l2cap_exit(void); 224 #else 225 static inline int l2cap_init(void) 226 { 227 return 0; 228 } 229 230 static inline void l2cap_exit(void) 231 { 232 } 233 #endif 234 235 #ifdef CONFIG_BT_SCO 236 int sco_init(void); 237 void sco_exit(void); 238 #else 239 static inline int sco_init(void) 240 { 241 return 0; 242 } 243 244 static inline void sco_exit(void) 245 { 246 } 247 #endif 248 249 #endif /* __BLUETOOTH_H */ 250