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
  57 struct 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 */
  72 enum {
  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 /* Endianness conversions */
  85 #define htobs(a)        __cpu_to_le16(a)
  86 #define htobl(a)        __cpu_to_le32(a)
  87 #define btohs(a)        __le16_to_cpu(a)
  88 #define btohl(a)        __le32_to_cpu(a)
  89
  90 /* BD Address */
  91 typedef struct {
  92         __u8 b[6];
  93 } __attribute__((packed)) bdaddr_t;
  94
  95 #define BDADDR_ANY   (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
  96 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})
  97
  98 /* Copy, swap, convert BD Address */
  99 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
 100 {
 101         return memcmp(ba1, ba2, sizeof(bdaddr_t));
 102 }
 103 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
 104 {
 105         memcpy(dst, src, sizeof(bdaddr_t));
 106 }
 107
 108 void baswap(bdaddr_t *dst, bdaddr_t *src);
 109 char *batostr(bdaddr_t *ba);
 110 bdaddr_t *strtoba(char *str);
 111
 112 /* Common socket structures and functions */
 113
 114 #define bt_sk(__sk) ((struct bt_sock *) __sk)
 115
 116 struct bt_sock {
 117         struct sock sk;
 118         bdaddr_t    src;
 119         bdaddr_t    dst;
 120         struct list_head accept_q;
 121         struct sock *parent;
 122         u32 defer_setup;
 123 };
 124
 125 struct bt_sock_list {
 126         struct hlist_head head;
 127         rwlock_t          lock;
 128 };
 129
 130 int  bt_sock_register(int proto, struct net_proto_family *ops);
 131 int  bt_sock_unregister(int proto);
 132 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
 133 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
 134 int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags);
 135 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
 136 int  bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 137 int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
 138
 139 void bt_accept_enqueue(struct sock *parent, struct sock *sk);
 140 void bt_accept_unlink(struct sock *sk);
 141 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 142
 143 /* Skb helpers */
 144 struct bt_skb_cb {
 145         __u8 pkt_type;
 146         __u8 incoming;
 147 };
 148 #define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb))
 149
 150 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
 151 {
 152         struct sk_buff *skb;
 153
 154         if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
 155                 skb_reserve(skb, BT_SKB_RESERVE);
 156                 bt_cb(skb)->incoming  = 0;
 157         }
 158         return skb;
 159 }
 160
 161 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len,
 162                                                         int nb, int *err)
 163 {
 164         struct sk_buff *skb;
 165
 166         if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
 167                 skb_reserve(skb, BT_SKB_RESERVE);
 168                 bt_cb(skb)->incoming  = 0;
 169         }
 170
 171         return skb;
 172 }
 173
 174 static inline int skb_frags_no(struct sk_buff *skb)
 175 {
 176         register struct sk_buff *frag = skb_shinfo(skb)->frag_list;
 177         register int n = 1;
 178
 179         for (; frag; frag=frag->next, n++);
 180         return n;
 181 }
 182
 183 int bt_err(__u16 code);
 184
 185 extern int hci_sock_init(void);
 186 extern void hci_sock_cleanup(void);
 187
 188 extern int bt_sysfs_init(void);
 189 extern void bt_sysfs_cleanup(void);
 190
 191 extern struct class *bt_class;
 192
 193 #endif /* __BLUETOOTH_H */