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