cfg80211_get_ies_channel_number
channel_number = cfg80211_get_ies_channel_number(variable, ielen,
chan = cfg80211_get_ies_channel_number(variable, ielen, NL80211_BAND_2GHZ);
int cfg80211_get_ies_channel_number(const u8 *ie, size_t ielen,
EXPORT_SYMBOL(cfg80211_get_ies_channel_number);
channel_number = cfg80211_get_ies_channel_number(ie, ielen,