LXR linux/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
  57struct 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 */
  72enum {
  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 */
  85typedef struct {
  86        __u8 b[6];
  87} __attribute__((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 */
  93static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
  94{
  95        return memcmp(ba1, ba2, sizeof(bdaddr_t));
  96}
  97static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
  98{
  99        memcpy(dst, src, sizeof(bdaddr_t));
 100}
 101
 102void baswap(bdaddr_t *dst, bdaddr_t *src);
 103char *batostr(bdaddr_t *ba);
 104bdaddr_t *strtoba(char *str);
 105
 106/* Common socket structures and functions */
 107
 108#define bt_sk(__sk) ((struct bt_sock *) __sk)
 109
 110struct 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
 119struct bt_sock_list {
 120        struct hlist_head head;
 121        rwlock_t          lock;
 122};
 123
 124int  bt_sock_register(int proto, struct net_proto_family *ops);
 125int  bt_sock_unregister(int proto);
 126void bt_sock_link(struct bt_sock_list *l, struct sock *s);
 127void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
 128int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags);
 129uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
 130int  bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 131int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
 132
 133void bt_accept_enqueue(struct sock *parent, struct sock *sk);
 134void bt_accept_unlink(struct sock *sk);
 135struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 136
 137/* Skb helpers */
 138struct bt_skb_cb {
 139        __u8 pkt_type;
 140        __u8 incoming;
 141};
 142#define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb)) 
 143
 144static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t 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
 155static 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
 168int bt_err(__u16 code);
 169
 170extern int hci_sock_init(void);
 171extern void hci_sock_cleanup(void);
 172
 173extern int bt_sysfs_init(void);
 174extern void bt_sysfs_cleanup(void);
 175
 176extern struct class *bt_class;
 177
 178#endif /* __BLUETOOTH_H */
 179