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Use a common frequency to channel conversion function

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Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-04-27 21:27:15 +03:00
parent 02db75b6c2
commit e864c0aefe
5 changed files with 42 additions and 76 deletions
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28
src/common/ieee802_11_common.c
View file

@ -1,6 +1,6 @@
/*
* IEEE 802.11 Common routines
* Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
* Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
@ -9,6 +9,7 @@
#include "includes.h"
#include "common.h"
#include "defs.h"
#include "ieee802_11_defs.h"
#include "ieee802_11_common.h"
@ -486,3 +487,28 @@ int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
return 0;
}
enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel)
{
enum hostapd_hw_mode mode = NUM_HOSTAPD_MODES;
if (freq >= 2412 && freq <= 2472) {
mode = HOSTAPD_MODE_IEEE80211G;
*channel = (freq - 2407) / 5;
} else if (freq == 2484) {
mode = HOSTAPD_MODE_IEEE80211B;
*channel = 14;
} else if (freq >= 4900 && freq < 5000) {
mode = HOSTAPD_MODE_IEEE80211A;
*channel = (freq - 4000) / 5;
} else if (freq >= 5000 && freq < 5900) {
mode = HOSTAPD_MODE_IEEE80211A;
*channel = (freq - 5000) / 5;
} else if (freq >= 56160 + 2160 * 1 && freq <= 56160 + 2160 * 4) {
mode = HOSTAPD_MODE_IEEE80211AD;
*channel = (freq - 56160) / 2160;
}
return mode;
}

1
src/common/ieee802_11_common.h
View file

@ -99,5 +99,6 @@ struct hostapd_wmm_ac_params {
int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
const char *name, const char *val);
enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel);
#endif /* IEEE802_11_COMMON_H */