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_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 */