ath_rate/sample/sample.c

147 dot11rate(const HAL_RATE_TABLE *rt, int rix)
149 	return rt->info[rix].phy == IEEE80211_T_HT ?
150 	    rt->info[rix].dot11Rate : (rt->info[rix].dot11Rate & IEEE80211_RATE_VAL) / 2;
154 dot11rate_label(const HAL_RATE_TABLE *rt, int rix)
156 	return rt->info[rix].phy == IEEE80211_T_HT ? "MCS" : "Mb ";
160  * Return the rix with the lowest average_tx_time,
170 	int rix, tt;
174 	for (mask = sn->ratemask, rix = 0; mask != 0; mask >>= 1, rix++) {
180 		    (rt->info[rix].phy != IEEE80211_T_HT)) {
184 		tt = sn->stats[size_bin][rix].average_tx_time;
187 		     !sn->stats[size_bin][rix].packets_acked))
191 		if (sn->stats[size_bin][rix].successive_failures > 3)
196 			best_rate_rix = rix;
212 	int current_rix, rix;
225 	rix = sn->last_sample_rix[size_bin]+1;	/* next sample rate */
228 		if ((mask & (1<<rix)) == 0) {	/* not a supported rate */
230 			if (++rix >= rt->rateCount)
231 				rix = 0;
237 		    (rt->info[rix].phy != IEEE80211_T_HT)) {
238 			mask &= ~(1<<rix);
243 		if (sn->stats[size_bin][rix].perfect_tx_time > current_tt) {
244 			mask &= ~(1<<rix);
249 		if (sn->stats[size_bin][rix].successive_failures > ssc->max_successive_failures &&
250 		    ticks - sn->stats[size_bin][rix].last_tx < ssc->stale_failure_timeout) {
251 			mask &= ~(1<<rix);
257 			if (DOT11RATE(rix) > 2*11 && rix > current_rix + 2) {
258 				mask &= ~(1<<rix);
263 		sn->last_sample_rix[size_bin] = rix;
264 		return rix;
334 	int rix, mrr, best_rix, change_rates;
340 		rix = sn->static_rix;
359 		rix = pick_sample_rate(ssc, an, rt, size_bin);
362 		     bin_to_size(size_bin), RATE(rix),
364 		if (rix != sn->current_rix[size_bin]) {
365 			sn->current_sample_rix[size_bin] = rix;
374 			for (rix = rt->rateCount-1; rix > 0; rix--) {
375 				if ((sn->ratemask & (1<<rix)) == 0)
381 				if (DOT11RATE(rix) <= 72 &&
382 				    sn->stats[size_bin][rix].successive_failures == 0) {
387 			best_rix = rix;
426 		rix = sn->current_rix[size_bin];
429 	*try0 = mrr ? sn->sched[rix].t0 : ATH_TXMAXTRY;
431 	KASSERT(rix >= 0 && rix < rt->rateCount, ("rix is %d", rix));
433 	*rix0 = rix;
434 	*txrate = rt->info[rix].rateCode
435 		| (shortPreamble ? rt->info[rix].shortPreamble : 0);
448     uint8_t rix0, uint8_t *rix, uint8_t *try)
455 /*	rix[0] = sched->r0; */
456 	rix[1] = sched->r1;
457 	rix[2] = sched->r2;
458 	rix[3] = sched->r3;
468 		      struct ath_desc *ds, int shortPreamble, u_int8_t rix)
471 	const struct txschedule *sched = &sn->sched[rix];
645 		int hwrates[4], tries[4], rix[4];
655 			rix[i] = rt->rateCodeToIndex[hwrates[i]];
667 		     dot11rate(rt, rix[0]), dot11rate_label(rt, rix[0]), tries[0],
668 		     dot11rate(rt, rix[1]), dot11rate_label(rt, rix[1]), tries[1],
669 		     dot11rate(rt, rix[2]), dot11rate_label(rt, rix[2]), tries[2],
670 		     dot11rate(rt, rix[3]), dot11rate_label(rt, rix[3]), tries[3]);
673 			if (tries[i] && !IS_RATE_DEFINED(sn, rix[i]))
686 				     rix[0], tries[0],
687 				     rix[1], tries[1],
688 				     rix[2], tries[2],
689 				     rix[3], tries[3],
697 				     rix[1], tries[1],
698 				     rix[2], tries[2],
699 				     rix[3], tries[3],
708 				     rix[2], tries[2],
709 				     rix[3], tries[3],
719 				     rix[3], tries[3],
763 	int x, y, rix;
785 			rix = sc->sc_rixmap[MCS(x)];
786 			if (rix == 0xff)
789 			if (!rt->info[rix].valid)
791 			KASSERT(rix < SAMPLE_MAXRATES,
792 			    ("mcs %u has rix %d", MCS(x), rix));
793 			sn->ratemask |= 1<<rix;
799 		rix = sc->sc_rixmap[RATE(x)];
800 		if (rix == 0xff)
803 		if (!rt->info[rix].valid)
805 		KASSERT(rix < SAMPLE_MAXRATES,
806 		    ("rate %u has rix %d", RATE(x), rix));
807 		sn->ratemask |= 1<<rix;
815 		for (mask = sn->ratemask, rix = 0; mask != 0; mask >>= 1, rix++) {
818 			printf(" %d %s/%d", dot11rate(rt, rix), dot11rate_label(rt, rix),
819 			    calc_usecs_unicast_packet(sc, 1600, rix, 0,0,
839 		for (rix = 0, mask = sn->ratemask; mask != 0; rix++, mask >>= 1) {
842 			sn->stats[y][rix].successive_failures = 0;
843 			sn->stats[y][rix].tries = 0;
844 			sn->stats[y][rix].total_packets = 0;
845 			sn->stats[y][rix].packets_acked = 0;
846 			sn->stats[y][rix].last_tx = 0;
848 			sn->stats[y][rix].perfect_tx_time =
849 			    calc_usecs_unicast_packet(sc, size, rix, 0, 0,
851 			sn->stats[y][rix].average_tx_time =
852 			    sn->stats[y][rix].perfect_tx_time;
882 	int rix, y;
888 		printf("[%4u] cur rix %d (%d %s) since switch: packets %d ticks %u\n",
900 	for (mask = sn->ratemask, rix = 0; mask != 0; mask >>= 1, rix++) {
904 			if (sn->stats[y][rix].total_packets == 0)
907 			    dot11rate(rt, rix), dot11rate_label(rt, rix),
909 			    sn->stats[y][rix].total_packets,
910 			    sn->stats[y][rix].packets_acked,
911 			    (100*sn->stats[y][rix].packets_acked)/sn->stats[y][rix].total_packets,
912 			    sn->stats[y][rix].tries,
913 			    sn->stats[y][rix].successive_failures,
914 			    sn->stats[y][rix].average_tx_time,
915 			    ticks - sn->stats[y][rix].last_tx);