6 #include <linux/dim.h>
10  * Net DIM profiles:
168 void net_dim_setting(struct net_device *dev, struct dim *dim, bool is_tx)  in net_dim_setting()  argument
176 		INIT_WORK(&dim->work, irq_moder->tx_dim_work);  in net_dim_setting()
177 		dim->mode = READ_ONCE(irq_moder->dim_tx_mode);  in net_dim_setting()
181 	INIT_WORK(&dim->work, irq_moder->rx_dim_work);  in net_dim_setting()
182 	dim->mode = READ_ONCE(irq_moder->dim_rx_mode);  in net_dim_setting()
186 void net_dim_work_cancel(struct dim *dim)  in net_dim_work_cancel()  argument
188 	cancel_work_sync(&dim->work);  in net_dim_work_cancel()
193 					     struct dim *dim)  in net_dim_get_rx_irq_moder()  argument
199 	res = profile[dim->profile_ix];  in net_dim_get_rx_irq_moder()
202 	res.cq_period_mode = dim->mode;  in net_dim_get_rx_irq_moder()
209 					     struct dim *dim)  in net_dim_get_tx_irq_moder()  argument
215 	res = profile[dim->profile_ix];  in net_dim_get_tx_irq_moder()
218 	res.cq_period_mode = dim->mode;  in net_dim_get_tx_irq_moder()
236 static int net_dim_step(struct dim *dim)  in net_dim_step()  argument
238 	if (dim->tired == (NET_DIM_PARAMS_NUM_PROFILES * 2))  in net_dim_step()
241 	switch (dim->tune_state) {  in net_dim_step()
246 		if (dim->profile_ix == (NET_DIM_PARAMS_NUM_PROFILES - 1))  in net_dim_step()
248 		dim->profile_ix++;  in net_dim_step()
249 		dim->steps_right++;  in net_dim_step()
252 		if (dim->profile_ix == 0)  in net_dim_step()
254 		dim->profile_ix--;  in net_dim_step()
255 		dim->steps_left++;  in net_dim_step()
259 	dim->tired++;  in net_dim_step()
263 static void net_dim_exit_parking(struct dim *dim)  in net_dim_exit_parking()  argument
265 	dim->tune_state = dim->profile_ix ? DIM_GOING_LEFT : DIM_GOING_RIGHT;  in net_dim_exit_parking()
266 	net_dim_step(dim);  in net_dim_exit_parking()
297 static bool net_dim_decision(struct dim_stats *curr_stats, struct dim *dim)  in net_dim_decision()  argument
299 	int prev_state = dim->tune_state;  in net_dim_decision()
300 	int prev_ix = dim->profile_ix;  in net_dim_decision()
304 	switch (dim->tune_state) {  in net_dim_decision()
307 						  &dim->prev_stats);  in net_dim_decision()
309 			net_dim_exit_parking(dim);  in net_dim_decision()
313 		dim->tired--;  in net_dim_decision()
314 		if (!dim->tired)  in net_dim_decision()
315 			net_dim_exit_parking(dim);  in net_dim_decision()
321 						  &dim->prev_stats);  in net_dim_decision()
323 			dim_turn(dim);  in net_dim_decision()
325 		if (dim_on_top(dim)) {  in net_dim_decision()
326 			dim_park_on_top(dim);  in net_dim_decision()
330 		step_res = net_dim_step(dim);  in net_dim_decision()
333 			dim_park_on_top(dim);  in net_dim_decision()
336 			dim_park_tired(dim);  in net_dim_decision()
344 	    dim->tune_state != DIM_PARKING_ON_TOP)  in net_dim_decision()
345 		dim->prev_stats = *curr_stats;  in net_dim_decision()
347 	return dim->profile_ix != prev_ix;  in net_dim_decision()
350 void net_dim(struct dim *dim, struct dim_sample end_sample)  in net_dim()  argument
355 	switch (dim->state) {  in net_dim()
359 				  dim->start_sample.event_ctr);  in net_dim()
362 		if (!dim_calc_stats(&dim->start_sample, &end_sample, &curr_stats))  in net_dim()
364 		if (net_dim_decision(&curr_stats, dim)) {  in net_dim()
365 			dim->state = DIM_APPLY_NEW_PROFILE;  in net_dim()
366 			schedule_work(&dim->work);  in net_dim()
372 				  end_sample.byte_ctr, &dim->start_sample);  in net_dim()
373 		dim->state = DIM_MEASURE_IN_PROGRESS;  in net_dim()