xref: /openbmc/linux/net/bluetooth/lib.c (revision d78c317f)
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 /* Bluetooth kernel library. */
26 
27 #include <linux/module.h>
28 
29 #include <linux/kernel.h>
30 #include <linux/stddef.h>
31 #include <linux/string.h>
32 #include <asm/errno.h>
33 
34 #include <net/bluetooth/bluetooth.h>
35 
36 void baswap(bdaddr_t *dst, bdaddr_t *src)
37 {
38 	unsigned char *d = (unsigned char *) dst;
39 	unsigned char *s = (unsigned char *) src;
40 	unsigned int i;
41 
42 	for (i = 0; i < 6; i++)
43 		d[i] = s[5 - i];
44 }
45 EXPORT_SYMBOL(baswap);
46 
47 char *batostr(bdaddr_t *ba)
48 {
49 	static char str[2][18];
50 	static int i = 1;
51 
52 	i ^= 1;
53 	sprintf(str[i], "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
54 		ba->b[5], ba->b[4], ba->b[3],
55 		ba->b[2], ba->b[1], ba->b[0]);
56 
57 	return str[i];
58 }
59 EXPORT_SYMBOL(batostr);
60 
61 /* Bluetooth error codes to Unix errno mapping */
62 int bt_to_errno(__u16 code)
63 {
64 	switch (code) {
65 	case 0:
66 		return 0;
67 
68 	case 0x01:
69 		return EBADRQC;
70 
71 	case 0x02:
72 		return ENOTCONN;
73 
74 	case 0x03:
75 		return EIO;
76 
77 	case 0x04:
78 		return EHOSTDOWN;
79 
80 	case 0x05:
81 		return EACCES;
82 
83 	case 0x06:
84 		return EBADE;
85 
86 	case 0x07:
87 		return ENOMEM;
88 
89 	case 0x08:
90 		return ETIMEDOUT;
91 
92 	case 0x09:
93 		return EMLINK;
94 
95 	case 0x0a:
96 		return EMLINK;
97 
98 	case 0x0b:
99 		return EALREADY;
100 
101 	case 0x0c:
102 		return EBUSY;
103 
104 	case 0x0d:
105 	case 0x0e:
106 	case 0x0f:
107 		return ECONNREFUSED;
108 
109 	case 0x10:
110 		return ETIMEDOUT;
111 
112 	case 0x11:
113 	case 0x27:
114 	case 0x29:
115 	case 0x20:
116 		return EOPNOTSUPP;
117 
118 	case 0x12:
119 		return EINVAL;
120 
121 	case 0x13:
122 	case 0x14:
123 	case 0x15:
124 		return ECONNRESET;
125 
126 	case 0x16:
127 		return ECONNABORTED;
128 
129 	case 0x17:
130 		return ELOOP;
131 
132 	case 0x18:
133 		return EACCES;
134 
135 	case 0x1a:
136 		return EPROTONOSUPPORT;
137 
138 	case 0x1b:
139 		return ECONNREFUSED;
140 
141 	case 0x19:
142 	case 0x1e:
143 	case 0x23:
144 	case 0x24:
145 	case 0x25:
146 		return EPROTO;
147 
148 	default:
149 		return ENOSYS;
150 	}
151 }
152 EXPORT_SYMBOL(bt_to_errno);
153 
154 int bt_printk(const char *level, const char *format, ...)
155 {
156 	struct va_format vaf;
157 	va_list args;
158 	int r;
159 
160 	va_start(args, format);
161 
162 	vaf.fmt = format;
163 	vaf.va = &args;
164 
165 	r = printk("%sBluetooth: %pV\n", level, &vaf);
166 
167 	va_end(args);
168 
169 	return r;
170 }
171 EXPORT_SYMBOL(bt_printk);
172