linux/include/net/bluetooth/bluetooth.h
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   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" , __func__ , ## arg)
  58#define BT_ERR(fmt, arg...)  printk(KERN_ERR  "%s: " fmt "\n" , __func__ , ## arg)
  59
  60/* Connection and socket states */
  61enum {
  62        BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
  63        BT_OPEN,
  64        BT_BOUND,
  65        BT_LISTEN,
  66        BT_CONNECT,
  67        BT_CONNECT2,
  68        BT_CONFIG,
  69        BT_DISCONN,
  70        BT_CLOSED
  71};
  72
  73/* Endianness conversions */
  74#define htobs(a)        __cpu_to_le16(a)
  75#define htobl(a)        __cpu_to_le32(a)
  76#define btohs(a)        __le16_to_cpu(a)
  77#define btohl(a)        __le32_to_cpu(a)
  78
  79/* BD Address */
  80typedef struct {
  81        __u8 b[6];
  82} __attribute__((packed)) bdaddr_t;
  83
  84#define BDADDR_ANY   (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
  85#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})
  86
  87/* Copy, swap, convert BD Address */
  88static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
  89{
  90        return memcmp(ba1, ba2, sizeof(bdaddr_t));
  91}
  92static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
  93{
  94        memcpy(dst, src, sizeof(bdaddr_t));
  95}
  96
  97void baswap(bdaddr_t *dst, bdaddr_t *src);
  98char *batostr(bdaddr_t *ba);
  99bdaddr_t *strtoba(char *str);
 100
 101/* Common socket structures and functions */
 102
 103#define bt_sk(__sk) ((struct bt_sock *) __sk)
 104
 105struct bt_sock {
 106        struct sock sk;
 107        bdaddr_t    src;
 108        bdaddr_t    dst;
 109        struct list_head accept_q;
 110        struct sock *parent;
 111};
 112
 113struct bt_sock_list {
 114        struct hlist_head head;
 115        rwlock_t          lock;
 116};
 117
 118int  bt_sock_register(int proto, struct net_proto_family *ops);
 119int  bt_sock_unregister(int proto);
 120void bt_sock_link(struct bt_sock_list *l, struct sock *s);
 121void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
 122int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags);
 123uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
 124int  bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 125int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
 126
 127void bt_accept_enqueue(struct sock *parent, struct sock *sk);
 128void bt_accept_unlink(struct sock *sk);
 129struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 130
 131/* Skb helpers */
 132struct bt_skb_cb {
 133        __u8 pkt_type;
 134        __u8 incoming;
 135};
 136#define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb)) 
 137
 138static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
 139{
 140        struct sk_buff *skb;
 141
 142        if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
 143                skb_reserve(skb, BT_SKB_RESERVE);
 144                bt_cb(skb)->incoming  = 0;
 145        }
 146        return skb;
 147}
 148
 149static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len, 
 150                                                        int nb, int *err)
 151{
 152        struct sk_buff *skb;
 153
 154        if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
 155                skb_reserve(skb, BT_SKB_RESERVE);
 156                bt_cb(skb)->incoming  = 0;
 157        }
 158
 159        return skb;
 160}
 161
 162static inline int skb_frags_no(struct sk_buff *skb)
 163{
 164        register struct sk_buff *frag = skb_shinfo(skb)->frag_list;
 165        register int n = 1;
 166
 167        for (; frag; frag=frag->next, n++);
 168        return n;
 169}
 170
 171int bt_err(__u16 code);
 172
 173extern int hci_sock_init(void);
 174extern void hci_sock_cleanup(void);
 175
 176extern int bt_sysfs_init(void);
 177extern void bt_sysfs_cleanup(void);
 178
 179extern struct class *bt_class;
 180
 181#endif /* __BLUETOOTH_H */
 182