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