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hostapd: Get channel number from frequency based on other modes as well

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When getting the channel number from a frequency, all supported modes
should be checked rather than just the current mode. This is needed when
hostapd switches to a channel in different band.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Peng Xu 2017-02-22 14:05:35 -08:00 committed by Jouni Malinen
parent 4c8836f139
commit 5b9f46df0e
1 changed files with 15 additions and 1 deletions
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16
src/ap/hw_features.c
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@ -909,5 +909,19 @@ int hostapd_hw_get_freq(struct hostapd_data *hapd, int chan)
int hostapd_hw_get_channel(struct hostapd_data *hapd, int freq) int hostapd_hw_get_channel(struct hostapd_data *hapd, int freq)
{ {
return hw_get_chan(hapd->iface->current_mode, freq); int i, channel;
struct hostapd_hw_modes *mode;
channel = hw_get_chan(hapd->iface->current_mode, freq);
if (channel)
return channel;
/* Check other available modes since the channel list for the current
* mode did not include the specified frequency. */
for (i = 0; i < hapd->iface->num_hw_features; i++) {
mode = &hapd->iface->hw_features[i];
channel = hw_get_chan(mode, freq);
if (channel)
return channel;
}
return 0;
} }