include/net/bluetooth/bluetooth.h

   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 */