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