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 /* Connection and socket states */
  61 enum {
  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 */
  80 typedef 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 */
  88 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
  89 {
  90         return memcmp(ba1, ba2, sizeof(bdaddr_t));
  91 }
  92 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
  93 {
  94         memcpy(dst, src, sizeof(bdaddr_t));
  95 }
  96
  97 void baswap(bdaddr_t *dst, bdaddr_t *src);
  98 char *batostr(bdaddr_t *ba);
  99 bdaddr_t *strtoba(char *str);
 100
 101 /* Common socket structures and functions */
 102
 103 #define bt_sk(__sk) ((struct bt_sock *) __sk)
 104
 105 struct 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
 113 struct bt_sock_list {
 114         struct hlist_head head;
 115         rwlock_t          lock;
 116 };
 117
 118 int  bt_sock_register(int proto, struct net_proto_family *ops);
 119 int  bt_sock_unregister(int proto);
 120 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
 121 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
 122 int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags);
 123 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
 124 int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
 125
 126 void bt_accept_enqueue(struct sock *parent, struct sock *sk);
 127 void bt_accept_unlink(struct sock *sk);
 128 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 129
 130 /* Skb helpers */
 131 struct bt_skb_cb {
 132         __u8 pkt_type;
 133         __u8 incoming;
 134 };
 135 #define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb))
 136
 137 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
 138 {
 139         struct sk_buff *skb;
 140
 141         if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
 142                 skb_reserve(skb, BT_SKB_RESERVE);
 143                 bt_cb(skb)->incoming  = 0;
 144         }
 145         return skb;
 146 }
 147
 148 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len,
 149                                                         int nb, int *err)
 150 {
 151         struct sk_buff *skb;
 152
 153         if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
 154                 skb_reserve(skb, BT_SKB_RESERVE);
 155                 bt_cb(skb)->incoming  = 0;
 156         }
 157
 158         return skb;
 159 }
 160
 161 static inline int skb_frags_no(struct sk_buff *skb)
 162 {
 163         register struct sk_buff *frag = skb_shinfo(skb)->frag_list;
 164         register int n = 1;
 165
 166         for (; frag; frag=frag->next, n++);
 167         return n;
 168 }
 169
 170 int bt_err(__u16 code);
 171
 172 extern int hci_sock_init(void);
 173 extern int hci_sock_cleanup(void);
 174
 175 extern int bt_sysfs_init(void);
 176 extern void bt_sysfs_cleanup(void);
 177
 178 extern struct class *bt_class;
 179
 180 #endif /* __BLUETOOTH_H */