mac80211_hwsim_get_tsf
u64 now = mac80211_hwsim_get_tsf(hw, vif);
u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
tsf = mac80211_hwsim_get_tsf(hw, vif);
u64 orig_tsf = mac80211_hwsim_get_tsf(hw, NULL), tsf = orig_tsf;
u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
.get_tsf = mac80211_hwsim_get_tsf, \