150 	u32 pf;  in rate_control_pid_sample()  local
171 		pf = spinfo->last_pf;  in rate_control_pid_sample()
176 		pf = spinfo->tx_num_failed * 100 / spinfo->tx_num_xmit;  in rate_control_pid_sample()
178 		if (ieee80211_vif_is_mesh(&si->sdata->vif) && pf == 100)  in rate_control_pid_sample()
180 		pf <<= RC_PID_ARITH_SHIFT;  in rate_control_pid_sample()
181 		si->fail_avg = ((pf + (spinfo->last_pf << 3)) / 9)  in rate_control_pid_sample()
194 		tmp = (pf - spinfo->last_pf);  in rate_control_pid_sample()
203 	err_prop = (pinfo->target << RC_PID_ARITH_SHIFT) - pf;  in rate_control_pid_sample()
209 	err_der = (pf - spinfo->last_pf) *  in rate_control_pid_sample()
211 	spinfo->last_pf = pf;  in rate_control_pid_sample()
216 	rate_control_pid_event_pf_sample(&spinfo->events, pf, err_prop, err_int,  in rate_control_pid_sample()