include/linux/net_dim.h

168 net_dim_on_top(struct net_dim *dim)
170 	switch (dim->tune_state) {
175 		return (dim->steps_left > 1) && (dim->steps_right == 1);
177 		return (dim->steps_right > 1) && (dim->steps_left == 1);
182 net_dim_turn(struct net_dim *dim)
184 	switch (dim->tune_state) {
189 		dim->tune_state = NET_DIM_GOING_LEFT;
190 		dim->steps_left = 0;
193 		dim->tune_state = NET_DIM_GOING_RIGHT;
194 		dim->steps_right = 0;
200 net_dim_step(struct net_dim *dim)
202 	if (dim->tired == (NET_DIM_PARAMS_NUM_PROFILES * 2))
205 	switch (dim->tune_state) {
210 		if (dim->profile_ix == (NET_DIM_PARAMS_NUM_PROFILES - 1))
212 		dim->profile_ix++;
213 		dim->steps_right++;
216 		if (dim->profile_ix == 0)
218 		dim->profile_ix--;
219 		dim->steps_left++;
223 	dim->tired++;
228 net_dim_park_on_top(struct net_dim *dim)
230 	dim->steps_right = 0;
231 	dim->steps_left = 0;
232 	dim->tired = 0;
233 	dim->tune_state = NET_DIM_PARKING_ON_TOP;
237 net_dim_park_tired(struct net_dim *dim)
239 	dim->steps_right = 0;
240 	dim->steps_left = 0;
241 	dim->tune_state = NET_DIM_PARKING_TIRED;
245 net_dim_exit_parking(struct net_dim *dim)
247 	dim->tune_state = dim->profile_ix ? NET_DIM_GOING_LEFT :
249 	net_dim_step(dim);
288     struct net_dim *dim)
290 	int prev_state = dim->tune_state;
291 	int prev_ix = dim->profile_ix;
295 	switch (dim->tune_state) {
297 		stats_res = net_dim_stats_compare(curr_stats, &dim->prev_stats);
299 			net_dim_exit_parking(dim);
303 		dim->tired--;
304 		if (!dim->tired)
305 			net_dim_exit_parking(dim);
310 		stats_res = net_dim_stats_compare(curr_stats, &dim->prev_stats);
312 			net_dim_turn(dim);
314 		if (net_dim_on_top(dim)) {
315 			net_dim_park_on_top(dim);
318 		step_res = net_dim_step(dim);
321 			net_dim_park_on_top(dim);
324 			net_dim_park_tired(dim);
332 	    (dim->tune_state != NET_DIM_PARKING_ON_TOP))
333 		dim->prev_stats = *curr_stats;
335 	return dim->profile_ix != prev_ix;
374 net_dim(struct net_dim *dim,
381 	dim->event_ctr++;
383 	switch (dim->state) {
386 		    dim->event_ctr,
387 		    dim->start_sample.event_ctr);
390 		net_dim_sample(dim->event_ctr, packets, bytes, &end_sample);
391 		net_dim_calc_stats(&dim->start_sample, &end_sample,
393 		if (net_dim_decision(&curr_stats, dim)) {
394 			dim->state = NET_DIM_APPLY_NEW_PROFILE;
395 			schedule_work(&dim->work);
400 		net_dim_sample(dim->event_ctr, packets, bytes, &dim->start_sample);
401 		dim->state = NET_DIM_MEASURE_IN_PROGRESS;