xref: /openbmc/linux/include/net/bluetooth/bluetooth.h (revision 90890687859ea658759e653c4e70ed7e9e1a6217)
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 #endif /* __BLUETOOTH_H */
175