wlc_read_tsf(wlc, &tsf_l, &tsf_h); /* mactime */
rx_status->mactime = tsf_h;
rx_status->mactime <<= 32;
rx_status->mactime |= tsf_l;
wlc_read_tsf(wlc, &tsf_l, &tsf_h); /* mactime */
rx_status->mactime = tsf_h;
rx_status->mactime <<= 32;
rx_status->mactime |= tsf_l;