blob: 1eee7bab3e50590b211ee2b5964c37d2c319d7f4 (
plain)
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
|
//------------------------------------------------------------------------------
// <copyright file="wlan_utils.c" company="Atheros">
// Copyright (c) 2004-2010 Atheros Corporation. All rights reserved.
//
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
//
//------------------------------------------------------------------------------
//==============================================================================
// This module implements frequently used wlan utilies
//
// Author(s): ="Atheros"
//==============================================================================
#include <a_config.h>
#include <athdefs.h>
#include <a_types.h>
#include <a_osapi.h>
/*
* converts ieee channel number to frequency
*/
A_UINT16
wlan_ieee2freq(int chan)
{
if (chan == 14) {
return 2484;
}
if (chan < 14) { /* 0-13 */
return (2407 + (chan*5));
}
if (chan < 27) { /* 15-26 */
return (2512 + ((chan-15)*20));
}
return (5000 + (chan*5));
}
/*
* Converts MHz frequency to IEEE channel number.
*/
A_UINT32
wlan_freq2ieee(A_UINT16 freq)
{
if (freq == 2484)
return 14;
if (freq < 2484)
return (freq - 2407) / 5;
if (freq < 5000)
return 15 + ((freq - 2512) / 20);
return (freq - 5000) / 5;
}
|
