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utils: Derive phy type by frequency and bandwidth

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Add a function to derive phy type from frequency and bandwidth
as defined in IEEE Std 802.11ac-2013 Annex C (dot11PHYType).

Signed-off-by: David Spinadel <david.spinadel@intel.com>
This commit is contained in:
David Spinadel 2016-02-15 16:53:40 +02:00 • committed by Jouni Malinen
parent c8082d2b6a
commit cf11ab7f03
3 changed files with 50 additions and 0 deletions
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35
src/common/ieee802_11_common.c
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@ -1211,6 +1211,41 @@ const struct oper_class_map global_op_class[] = {
{ -1, 0, 0, 0, 0, BW20, NO_P2P_SUPP }
};
static enum phy_type ieee80211_phy_type_by_freq(int freq)
{
enum hostapd_hw_mode hw_mode;
u8 channel;
hw_mode = ieee80211_freq_to_chan(freq, &channel);
switch (hw_mode) {
case HOSTAPD_MODE_IEEE80211A:
return PHY_TYPE_OFDM;
case HOSTAPD_MODE_IEEE80211B:
return PHY_TYPE_HRDSSS;
case HOSTAPD_MODE_IEEE80211G:
return PHY_TYPE_ERP;
case HOSTAPD_MODE_IEEE80211AD:
return PHY_TYPE_DMG;
default:
return PHY_TYPE_UNSPECIFIED;
};
}
/* ieee80211_get_phy_type - Derive the phy type by freq and bandwidth */
enum phy_type ieee80211_get_phy_type(int freq, int ht, int vht)
{
if (vht)
return PHY_TYPE_VHT;
if (ht)
return PHY_TYPE_HT;
return ieee80211_phy_type_by_freq(freq);
}
size_t global_op_class_size = ARRAY_SIZE(global_op_class);