1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/******************************************************************************
Copyright(c) 2005 Intel Corporation. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
Contact Information:
Intel Linux Wireless <ilw@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
******************************************************************************/
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/if_arp.h>
#include <linux/in6.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#include <linux/skbuff.h>
#include <linux/tcp.h>
#include <linux/types.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>
#include <linux/uaccess.h>
#include "libipw.h"
int libipw_is_valid_channel(struct libipw_device *ieee, u8 channel)
{
int i;
/* Driver needs to initialize the geography map before using
* these helper functions */
if (ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
return 0;
if (ieee->freq_band & LIBIPW_24GHZ_BAND)
for (i = 0; i < ieee->geo.bg_channels; i++)
/* NOTE: If G mode is currently supported but
* this is a B only channel, we don't see it
* as valid. */
if ((ieee->geo.bg[i].channel == channel) &&
!(ieee->geo.bg[i].flags & LIBIPW_CH_INVALID) &&
(!(ieee->mode & IEEE_G) ||
!(ieee->geo.bg[i].flags & LIBIPW_CH_B_ONLY)))
return LIBIPW_24GHZ_BAND;
if (ieee->freq_band & LIBIPW_52GHZ_BAND)
for (i = 0; i < ieee->geo.a_channels; i++)
if ((ieee->geo.a[i].channel == channel) &&
!(ieee->geo.a[i].flags & LIBIPW_CH_INVALID))
return LIBIPW_52GHZ_BAND;
return 0;
}
int libipw_channel_to_index(struct libipw_device *ieee, u8 channel)
{
int i;
/* Driver needs to initialize the geography map before using
* these helper functions */
if (ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
return -1;
if (ieee->freq_band & LIBIPW_24GHZ_BAND)
for (i = 0; i < ieee->geo.bg_channels; i++)
if (ieee->geo.bg[i].channel == channel)
return i;
if (ieee->freq_band & LIBIPW_52GHZ_BAND)
for (i = 0; i < ieee->geo.a_channels; i++)
if (ieee->geo.a[i].channel == channel)
return i;
return -1;
}
u32 libipw_channel_to_freq(struct libipw_device * ieee, u8 channel)
{
const struct libipw_channel * ch;
/* Driver needs to initialize the geography map before using
* these helper functions */
if (ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
return 0;
ch = libipw_get_channel(ieee, channel);
if (!ch->channel)
return 0;
return ch->freq;
}
u8 libipw_freq_to_channel(struct libipw_device * ieee, u32 freq)
{
int i;
/* Driver needs to initialize the geography map before using
* these helper functions */
if (ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
return 0;
freq /= 100000;
if (ieee->freq_band & LIBIPW_24GHZ_BAND)
for (i = 0; i < ieee->geo.bg_channels; i++)
if (ieee->geo.bg[i].freq == freq)
return ieee->geo.bg[i].channel;
if (ieee->freq_band & LIBIPW_52GHZ_BAND)
for (i = 0; i < ieee->geo.a_channels; i++)
if (ieee->geo.a[i].freq == freq)
return ieee->geo.a[i].channel;
return 0;
}
void libipw_set_geo(struct libipw_device *ieee,
const struct libipw_geo *geo)
{
memcpy(ieee->geo.name, geo->name, 3);
ieee->geo.name[3] = '\0';
ieee->geo.bg_channels = geo->bg_channels;
ieee->geo.a_channels = geo->a_channels;
memcpy(ieee->geo.bg, geo->bg, geo->bg_channels *
sizeof(struct libipw_channel));
memcpy(ieee->geo.a, geo->a, ieee->geo.a_channels *
sizeof(struct libipw_channel));
}
const struct libipw_geo *libipw_get_geo(struct libipw_device *ieee)
{
return &ieee->geo;
}
u8 libipw_get_channel_flags(struct libipw_device * ieee, u8 channel)
{
int index = libipw_channel_to_index(ieee, channel);
if (index == -1)
return LIBIPW_CH_INVALID;
if (channel <= LIBIPW_24GHZ_CHANNELS)
return ieee->geo.bg[index].flags;
return ieee->geo.a[index].flags;
}
static const struct libipw_channel bad_channel = {
.channel = 0,
.flags = LIBIPW_CH_INVALID,
.max_power = 0,
};
const struct libipw_channel *libipw_get_channel(struct libipw_device
*ieee, u8 channel)
{
int index = libipw_channel_to_index(ieee, channel);
if (index == -1)
return &bad_channel;
if (channel <= LIBIPW_24GHZ_CHANNELS)
return &ieee->geo.bg[index];
return &ieee->geo.a[index];
}
EXPORT_SYMBOL(libipw_get_channel);
EXPORT_SYMBOL(libipw_get_channel_flags);
EXPORT_SYMBOL(libipw_is_valid_channel);
EXPORT_SYMBOL(libipw_freq_to_channel);
EXPORT_SYMBOL(libipw_channel_to_freq);
EXPORT_SYMBOL(libipw_channel_to_index);
EXPORT_SYMBOL(libipw_set_geo);
EXPORT_SYMBOL(libipw_get_geo);
|
