ath_rate/sample/sample.c

317     int size_bin, int require_acked_before)
337 		tt = sn->stats[size_bin][rix].average_tx_time;
340 		     !sn->stats[size_bin][rix].packets_acked))
344 		if (sn->stats[size_bin][rix].total_packets > 0) {
345 			pct = sn->stats[size_bin][rix].ewma_pct;
351 		if (sn->stats[size_bin][rix].successive_failures > 3)
371 			    bin_to_size(size_bin),
373 			    sn->stats[size_bin][best_rate_rix].total_packets,
377 			    sn->stats[size_bin][rix].total_packets,
417     const HAL_RATE_TABLE *rt, int size_bin)
426 	current_rix = sn->current_rix[size_bin];
433 	current_tt = sn->stats[size_bin][current_rix].average_tx_time;
435 	rix = sn->last_sample_rix[size_bin]+1;	/* next sample rate */
470 		if (sn->stats[size_bin][rix].perfect_tx_time > current_tt) {
476 		if (sn->stats[size_bin][rix].successive_failures > ssc->max_successive_failures &&
477 		    ticks - sn->stats[size_bin][rix].last_tx < ssc->stale_failure_timeout) {
514 		sn->last_sample_rix[size_bin] = rix;
582 	const int size_bin = size_to_bin(frameLen);
598 		    sn->stats[size_bin][rix].successive_failures == 0) {
623 	const int size_bin = size_to_bin(frameLen);
645 		    sn->stats[size_bin][rix].successive_failures == 0) {
673 	int size_bin = size_to_bin(frameLen);
709 			size_bin = size_to_bin(frameLen);
720 	best_rix = pick_best_rate(an, rt, size_bin, !mrr);
725 	 * and size_bin if we're doing 11n rates.
736 		size_bin = size_to_bin(frameLen);
740 		average_tx_time = sn->stats[size_bin][best_rix].average_tx_time;
749 	if (sn->sample_tt[size_bin] <
751 	    (sn->packets_since_sample[size_bin]*ssc->sample_rate/100)) {
752 		rix = pick_sample_rate(ssc, an, rt, size_bin);
757 		     sn->sample_tt[size_bin],
758 		     bin_to_size(size_bin),
761 		     dot11rate(rt, sn->current_rix[size_bin]),
762 		     dot11rate_label(rt, sn->current_rix[size_bin]));
763 		if (rix != sn->current_rix[size_bin]) {
764 			sn->current_sample_rix[size_bin] = rix;
766 			sn->current_sample_rix[size_bin] = -1;
768 		sn->packets_since_sample[size_bin] = 0;
771 		if (!sn->packets_sent[size_bin] || best_rix == -1) {
780 		} else if (sn->packets_sent[size_bin] < 20) {
786 		} else if (ticks - ssc->min_switch > sn->ticks_since_switch[size_bin]) {
791 			    __func__, ticks - ssc->min_switch, sn->ticks_since_switch[size_bin]);
794 		    (2*average_tx_time < sn->stats[size_bin][sn->current_rix[size_bin]].average_tx_time)) {
800 			    2 * average_tx_time, sn->stats[size_bin][sn->current_rix[size_bin]].average_tx_time);
803 			int cur_rix = sn->current_rix[size_bin];
804 			int cur_att = sn->stats[size_bin][cur_rix].average_tx_time;
823 				    __func__, bin_to_size(size_bin),
830 		sn->packets_since_sample[size_bin]++;
833 			if (best_rix != sn->current_rix[size_bin]) {
839 				    bin_to_size(size_bin),
840 				    dot11rate(rt, sn->current_rix[size_bin]),
841 				    dot11rate_label(rt, sn->current_rix[size_bin]),
842 				    sn->stats[size_bin][sn->current_rix[size_bin]].average_tx_time,
843 				    sn->stats[size_bin][sn->current_rix[size_bin]].perfect_tx_time,
844 				    sn->stats[size_bin][sn->current_rix[size_bin]].ewma_pct,
847 				    sn->stats[size_bin][best_rix].average_tx_time,
848 				    sn->stats[size_bin][best_rix].perfect_tx_time,
849 				    sn->stats[size_bin][best_rix].ewma_pct,
850 				    sn->packets_since_switch[size_bin],
853 			sn->packets_since_switch[size_bin] = 0;
854 			sn->current_rix[size_bin] = best_rix;
855 			sn->ticks_since_switch[size_bin] = ticks;
863 		rix = sn->current_rix[size_bin];
864 		sn->packets_since_switch[size_bin]++;
887 	sn->packets_sent[size_bin]++;
975 	const int size_bin = size_to_bin(frame_size);
976 	const int size = bin_to_size(size_bin);
1011 	if (sn->stats[size_bin][rix0].total_packets < ssc->smoothing_minpackets) {
1013 		int avg_tx = sn->stats[size_bin][rix0].average_tx_time;
1014 		int packets = sn->stats[size_bin][rix0].total_packets;
1015 		sn->stats[size_bin][rix0].average_tx_time = (tt+(avg_tx*packets))/(packets+nframes);
1018 		sn->stats[size_bin][rix0].average_tx_time =
1019 			((sn->stats[size_bin][rix0].average_tx_time * ssc->smoothing_rate) +
1024 		sn->stats[size_bin][rix0].successive_failures += nbad;
1026 		sn->stats[size_bin][rix0].packets_acked += (nframes - nbad);
1027 		sn->stats[size_bin][rix0].successive_failures = 0;
1029 	sn->stats[size_bin][rix0].tries += tries;
1030 	sn->stats[size_bin][rix0].last_tx = ticks;
1031 	sn->stats[size_bin][rix0].total_packets += nframes;
1040 	if (sn->stats[size_bin][rix0].total_packets <
1043 		int a_pct = (sn->stats[size_bin][rix0].packets_acked * 1000) /
1044 		    (sn->stats[size_bin][rix0].total_packets);
1045 		sn->stats[size_bin][rix0].ewma_pct = a_pct;
1048 		sn->stats[size_bin][rix0].ewma_pct =
1049 			((sn->stats[size_bin][rix0].ewma_pct * ssc->smoothing_rate) +
1069 	    rix0 == sn->current_sample_rix[size_bin] ? "sample" : "mrr",
1073 	    sn->stats[size_bin][rix0].average_tx_time,
1074 	    sn->stats[size_bin][rix0].perfect_tx_time,
1077 	if (rix0 == sn->current_sample_rix[size_bin]) {
1078 		sn->sample_tt[size_bin] = tt;
1079 		sn->current_sample_rix[size_bin] = -1;
1123 	 * The eternal question here is - which size_bin should it go in?