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_INFO(fmt, arg...) printk(KERN_INFO "Bluetooth: " fmt "\n" , ## arg)
  57 #define BT_DBG(fmt, arg...)  printk(KERN_INFO "%s: " fmt "\n" , __FUNCTION__ , ## arg)
  58 #define BT_ERR(fmt, arg...)  printk(KERN_ERR  "%s: " fmt "\n" , __FUNCTION__ , ## arg)
  59
  60 #ifdef HCI_DATA_DUMP
  61 #define BT_DMP(buf, len) bt_dump(__FUNCTION__, buf, len)
  62 #else
  63 #define BT_DMP(D...)
  64 #endif
  65
  66 extern struct proc_dir_entry *proc_bt;
  67
  68 /* Connection and socket states */
  69 enum {
  70         BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
  71         BT_OPEN,
  72         BT_BOUND,
  73         BT_LISTEN,
  74         BT_CONNECT,
  75         BT_CONNECT2,
  76         BT_CONFIG,
  77         BT_DISCONN,
  78         BT_CLOSED
  79 };
  80
  81 /* Endianness conversions */
  82 #define htobs(a)        __cpu_to_le16(a)
  83 #define htobl(a)        __cpu_to_le32(a)
  84 #define btohs(a)        __le16_to_cpu(a)
  85 #define btohl(a)        __le32_to_cpu(a)
  86
  87 /* BD Address */
  88 typedef struct {
  89         __u8 b[6];
  90 } __attribute__((packed)) bdaddr_t;
  91
  92 #define BDADDR_ANY   (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
  93 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})
  94
  95 /* Copy, swap, convert BD Address */
  96 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
  97 {
  98         return memcmp(ba1, ba2, sizeof(bdaddr_t));
  99 }
 100 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
 101 {
 102         memcpy(dst, src, sizeof(bdaddr_t));
 103 }
 104
 105 void baswap(bdaddr_t *dst, bdaddr_t *src);
 106 char *batostr(bdaddr_t *ba);
 107 bdaddr_t *strtoba(char *str);
 108
 109 /* Common socket structures and functions */
 110
 111 #define bt_sk(__sk) ((struct bt_sock *) __sk)
 112
 113 struct bt_sock {
 114         struct sock sk;
 115         bdaddr_t    src;
 116         bdaddr_t    dst;
 117         struct list_head accept_q;
 118         struct sock *parent;
 119 };
 120
 121 struct bt_sock_list {
 122         struct hlist_head head;
 123         rwlock_t          lock;
 124 };
 125
 126 int  bt_sock_register(int proto, struct net_proto_family *ops);
 127 int  bt_sock_unregister(int proto);
 128 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
 129 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
 130 int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, 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_wait_state(struct sock *sk, int state, unsigned long timeo);
 133
 134 void bt_accept_enqueue(struct sock *parent, struct sock *sk);
 135 void bt_accept_unlink(struct sock *sk);
 136 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 137
 138 /* Skb helpers */
 139 struct bt_skb_cb {
 140         int incoming;
 141 };
 142 #define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb))
 143
 144 static inline struct sk_buff *bt_skb_alloc(unsigned int len, int how)
 145 {
 146         struct sk_buff *skb;
 147
 148         if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
 149                 skb_reserve(skb, BT_SKB_RESERVE);
 150                 bt_cb(skb)->incoming  = 0;
 151         }
 152         return skb;
 153 }
 154
 155 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len,
 156                                                         int nb, int *err)
 157 {
 158         struct sk_buff *skb;
 159
 160         if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
 161                 skb_reserve(skb, BT_SKB_RESERVE);
 162                 bt_cb(skb)->incoming  = 0;
 163         }
 164
 165         return skb;
 166 }
 167
 168 static inline int skb_frags_no(struct sk_buff *skb)
 169 {
 170         register struct sk_buff *frag = skb_shinfo(skb)->frag_list;
 171         register int n = 1;
 172
 173         for (; frag; frag=frag->next, n++);
 174         return n;
 175 }
 176
 177 void bt_dump(char *pref, __u8 *buf, int count);
 178
 179 int bt_err(__u16 code);
 180
 181 #endif /* __BLUETOOTH_H */