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 }; 60 #define BT_SECURITY_SDP 0 61 #define BT_SECURITY_LOW 1 62 #define BT_SECURITY_MEDIUM 2 63 #define BT_SECURITY_HIGH 3 64 65 #define BT_DEFER_SETUP 7 66 67 #define BT_FLUSHABLE 8 68 69 #define BT_FLUSHABLE_OFF 0 70 #define BT_FLUSHABLE_ON 1 71 72 #define BT_POWER 9 73 struct bt_power { 74 __u8 force_active; 75 }; 76 #define BT_POWER_FORCE_ACTIVE_OFF 0 77 #define BT_POWER_FORCE_ACTIVE_ON 1 78 79 #define BT_INFO(fmt, arg...) printk(KERN_INFO "Bluetooth: " fmt "\n" , ## arg) 80 #define BT_ERR(fmt, arg...) printk(KERN_ERR "%s: " fmt "\n" , __func__ , ## arg) 81 #define BT_DBG(fmt, arg...) pr_debug("%s: " fmt "\n" , __func__ , ## arg) 82 83 /* Connection and socket states */ 84 enum { 85 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 86 BT_OPEN, 87 BT_BOUND, 88 BT_LISTEN, 89 BT_CONNECT, 90 BT_CONNECT2, 91 BT_CONFIG, 92 BT_DISCONN, 93 BT_CLOSED 94 }; 95 96 /* BD Address */ 97 typedef struct { 98 __u8 b[6]; 99 } __packed bdaddr_t; 100 101 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 102 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}}) 103 104 /* Copy, swap, convert BD Address */ 105 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2) 106 { 107 return memcmp(ba1, ba2, sizeof(bdaddr_t)); 108 } 109 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src) 110 { 111 memcpy(dst, src, sizeof(bdaddr_t)); 112 } 113 114 void baswap(bdaddr_t *dst, bdaddr_t *src); 115 char *batostr(bdaddr_t *ba); 116 bdaddr_t *strtoba(char *str); 117 118 /* Common socket structures and functions */ 119 120 #define bt_sk(__sk) ((struct bt_sock *) __sk) 121 122 struct bt_sock { 123 struct sock sk; 124 bdaddr_t src; 125 bdaddr_t dst; 126 struct list_head accept_q; 127 struct sock *parent; 128 u32 defer_setup; 129 }; 130 131 struct bt_sock_list { 132 struct hlist_head head; 133 rwlock_t lock; 134 }; 135 136 int bt_sock_register(int proto, const struct net_proto_family *ops); 137 int bt_sock_unregister(int proto); 138 void bt_sock_link(struct bt_sock_list *l, struct sock *s); 139 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 140 int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags); 141 int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, 142 struct msghdr *msg, size_t len, int flags); 143 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); 144 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 145 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 146 147 void bt_accept_enqueue(struct sock *parent, struct sock *sk); 148 void bt_accept_unlink(struct sock *sk); 149 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 150 151 /* Skb helpers */ 152 struct bt_skb_cb { 153 __u8 pkt_type; 154 __u8 incoming; 155 __u16 expect; 156 __u8 tx_seq; 157 __u8 retries; 158 __u8 sar; 159 unsigned short channel; 160 __u8 force_active; 161 }; 162 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 163 164 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 165 { 166 struct sk_buff *skb; 167 168 if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) { 169 skb_reserve(skb, BT_SKB_RESERVE); 170 bt_cb(skb)->incoming = 0; 171 } 172 return skb; 173 } 174 175 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len, 176 int nb, int *err) 177 { 178 struct sk_buff *skb; 179 180 release_sock(sk); 181 if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) { 182 skb_reserve(skb, BT_SKB_RESERVE); 183 bt_cb(skb)->incoming = 0; 184 } 185 lock_sock(sk); 186 187 if (!skb && *err) 188 return NULL; 189 190 *err = sock_error(sk); 191 if (*err) 192 goto out; 193 194 if (sk->sk_shutdown) { 195 *err = -ECONNRESET; 196 goto out; 197 } 198 199 return skb; 200 201 out: 202 kfree_skb(skb); 203 return NULL; 204 } 205 206 int bt_err(__u16 code); 207 208 extern int hci_sock_init(void); 209 extern void hci_sock_cleanup(void); 210 211 extern int bt_sysfs_init(void); 212 extern void bt_sysfs_cleanup(void); 213 214 extern struct dentry *bt_debugfs; 215 216 #ifdef CONFIG_BT_L2CAP 217 int l2cap_init(void); 218 void l2cap_exit(void); 219 #else 220 static inline int l2cap_init(void) 221 { 222 return 0; 223 } 224 225 static inline void l2cap_exit(void) 226 { 227 } 228 #endif 229 230 #ifdef CONFIG_BT_SCO 231 int sco_init(void); 232 void sco_exit(void); 233 #else 234 static inline int sco_init(void) 235 { 236 return 0; 237 } 238 239 static inline void sco_exit(void) 240 { 241 } 242 #endif 243 244 #endif /* __BLUETOOTH_H */ 245