Hi, In kernel 3.19 there is a new function: cfg80211_ch_switch_started_notify() that will send NL80211_CMD_CH_SWITCH_STARTED_NOTIFY to user space. Currently wpa_supplicant is not processing it. My question is what cfg80211 wlan driver for STA should report to user kernel stack and user space once FW detects CSA? Thanks, Dmitry