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