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_FLUSHABLE    8
  68
  69 #define BT_FLUSHABLE_OFF        0
  70 #define BT_FLUSHABLE_ON         1
  71
  72 #define BT_POWER        9
  73 struct bt_power {
  74         __u8 force_active;
  75 };
  76 #define BT_POWER_FORCE_ACTIVE_OFF 0
  77 #define BT_POWER_FORCE_ACTIVE_ON  1
  78
  79 #define BT_INFO(fmt, arg...) printk(KERN_INFO "Bluetooth: " fmt "\n" , ## arg)
  80 #define BT_ERR(fmt, arg...)  printk(KERN_ERR "%s: " fmt "\n" , __func__ , ## arg)
  81 #define BT_DBG(fmt, arg...)  pr_debug("%s: " fmt "\n" , __func__ , ## arg)
  82
  83 /* Connection and socket states */
  84 enum {
  85         BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
  86         BT_OPEN,
  87         BT_BOUND,
  88         BT_LISTEN,
  89         BT_CONNECT,
  90         BT_CONNECT2,
  91         BT_CONFIG,
  92         BT_DISCONN,
  93         BT_CLOSED
  94 };
  95
  96 /* BD Address */
  97 typedef struct {
  98         __u8 b[6];
  99 } __packed bdaddr_t;
 100
 101 #define BDADDR_ANY   (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
 102 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})
 103
 104 /* Copy, swap, convert BD Address */
 105 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
 106 {
 107         return memcmp(ba1, ba2, sizeof(bdaddr_t));
 108 }
 109 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
 110 {
 111         memcpy(dst, src, sizeof(bdaddr_t));
 112 }
 113
 114 void baswap(bdaddr_t *dst, bdaddr_t *src);
 115 char *batostr(bdaddr_t *ba);
 116 bdaddr_t *strtoba(char *str);
 117
 118 /* Common socket structures and functions */
 119
 120 #define bt_sk(__sk) ((struct bt_sock *) __sk)
 121
 122 struct bt_sock {
 123         struct sock sk;
 124         bdaddr_t    src;
 125         bdaddr_t    dst;
 126         struct list_head accept_q;
 127         struct sock *parent;
 128         u32 defer_setup;
 129 };
 130
 131 struct bt_sock_list {
 132         struct hlist_head head;
 133         rwlock_t          lock;
 134 };
 135
 136 int  bt_sock_register(int proto, const struct net_proto_family *ops);
 137 int  bt_sock_unregister(int proto);
 138 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
 139 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
 140 int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 141                                 struct msghdr *msg, size_t len, int flags);
 142 int  bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
 143                         struct msghdr *msg, size_t len, int flags);
 144 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
 145 int  bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 146 int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
 147
 148 void bt_accept_enqueue(struct sock *parent, struct sock *sk);
 149 void bt_accept_unlink(struct sock *sk);
 150 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 151
 152 /* Skb helpers */
 153 struct bt_skb_cb {
 154         __u8 pkt_type;
 155         __u8 incoming;
 156         __u16 expect;
 157         __u8 tx_seq;
 158         __u8 retries;
 159         __u8 sar;
 160         unsigned short channel;
 161         __u8 force_active;
 162 };
 163 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
 164
 165 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
 166 {
 167         struct sk_buff *skb;
 168
 169         if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
 170                 skb_reserve(skb, BT_SKB_RESERVE);
 171                 bt_cb(skb)->incoming  = 0;
 172         }
 173         return skb;
 174 }
 175
 176 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
 177                                         unsigned long len, int nb, int *err)
 178 {
 179         struct sk_buff *skb;
 180
 181         release_sock(sk);
 182         if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
 183                 skb_reserve(skb, BT_SKB_RESERVE);
 184                 bt_cb(skb)->incoming  = 0;
 185         }
 186         lock_sock(sk);
 187
 188         if (!skb && *err)
 189                 return NULL;
 190
 191         *err = sock_error(sk);
 192         if (*err)
 193                 goto out;
 194
 195         if (sk->sk_shutdown) {
 196                 *err = -ECONNRESET;
 197                 goto out;
 198         }
 199
 200         return skb;
 201
 202 out:
 203         kfree_skb(skb);
 204         return NULL;
 205 }
 206
 207 int bt_to_errno(__u16 code);
 208
 209 extern int hci_sock_init(void);
 210 extern void hci_sock_cleanup(void);
 211
 212 extern int bt_sysfs_init(void);
 213 extern void bt_sysfs_cleanup(void);
 214
 215 extern struct dentry *bt_debugfs;
 216
 217 #ifdef CONFIG_BT_L2CAP
 218 int l2cap_init(void);
 219 void l2cap_exit(void);
 220 #else
 221 static inline int l2cap_init(void)
 222 {
 223         return 0;
 224 }
 225
 226 static inline void l2cap_exit(void)
 227 {
 228 }
 229 #endif
 230
 231 #ifdef CONFIG_BT_SCO
 232 int sco_init(void);
 233 void sco_exit(void);
 234 #else
 235 static inline int sco_init(void)
 236 {
 237         return 0;
 238 }
 239
 240 static inline void sco_exit(void)
 241 {
 242 }
 243 #endif
 244
 245 #endif /* __BLUETOOTH_H */