mac80211_hwsim_get_sim_tsf
u64 sim_time = mac80211_hwsim_get_sim_tsf();
u64 sim_time = mac80211_hwsim_get_sim_tsf();
sim_tsf = mac80211_hwsim_get_sim_tsf();
u64 sim_tsf = mac80211_hwsim_get_sim_tsf();