openbsd_wlan/net80211/ieee80211_ra_vht.c

174 ieee80211_ra_vht_next_lower_intra_rate(struct ieee80211_ra_vht_node *rn,
215 ieee80211_ra_vht_next_intra_rate(struct ieee80211_ra_vht_node *rn,
232 ieee80211_ra_vht_next_rateset(struct ieee80211_ra_vht_node *rn,
246 	if (rn->probing & IEEE80211_RA_PROBING_UP) {
257 	} else if (rn->probing & IEEE80211_RA_PROBING_DOWN) {
269 		panic("%s: invalid probing mode %d", __func__, rn->probing);
272 	if (rn->valid_rates[rsnext->num_ss - 1] == 0)
279 ieee80211_ra_vht_best_mcs_in_rateset(struct ieee80211_ra_vht_node *rn,
286 		struct ieee80211_ra_vht_goodput_stats *g = &rn->g[rs->idx][mcs];
287 		if (((1 << mcs) & rn->valid_rates[rs->num_ss - 1]) == 0)
299 ieee80211_ra_vht_probe_next_rateset(struct ieee80211_ra_vht_node *rn,
309 	best_mcs = ieee80211_ra_vht_best_mcs_in_rateset(rn, rs);
317 	g = &rn->g[rs->idx][best_mcs];
321 		if ((rn->valid_rates[rsnext->num_ss - 1] & (1 << mcs)) == 0)
335 		ni->ni_txmcs = ieee80211_ra_vht_best_mcs_in_rateset(rn, rsnext);
338 	rn->candidate_rates[rsnext->num_ss - 1] |= (1 << ni->ni_txmcs);
339 	if (rn->probing & IEEE80211_RA_PROBING_UP) {
340 		rn->candidate_rates[rsnext->num_ss - 1] |=
341 		  (1 << ieee80211_ra_vht_next_intra_rate(rn, ni));
342 	} else if (rn->probing & IEEE80211_RA_PROBING_DOWN) {
343 		rn->candidate_rates[rsnext->num_ss - 1] |=
344 		    (1 << ieee80211_ra_vht_next_lower_intra_rate(rn, ni));
346 		panic("%s: invalid probing mode %d", __func__, rn->probing);
350 ieee80211_ra_vht_next_mcs(struct ieee80211_ra_vht_node *rn,
355 	if (rn->probing & IEEE80211_RA_PROBING_DOWN)
356 		next = ieee80211_ra_vht_next_lower_intra_rate(rn, ni);
357 	else if (rn->probing & IEEE80211_RA_PROBING_UP)
358 		next = ieee80211_ra_vht_next_intra_rate(rn, ni);
360 		panic("%s: invalid probing mode %d", __func__, rn->probing);
373 ieee80211_ra_vht_probe_done(struct ieee80211_ra_vht_node *rn, int nss)
375 	rn->probing = IEEE80211_RA_NOT_PROBING;
376 	rn->probed_rates[nss - 1] = 0;
377 	rn->valid_probes[nss - 1] = 0;
378 	rn->candidate_rates[nss - 1] = 0;
382 ieee80211_ra_vht_intra_mode_ra_finished(struct ieee80211_ra_vht_node *rn,
392 	rn->probed_rates[nss - 1] = (rn->probed_rates[nss - 1] |
397 	if (rn->probing & IEEE80211_RA_PROBING_DOWN) {
399 		    rn->probed_rates[nss - 1] & (1 << 0)) {
400 			ieee80211_ra_vht_trigger_next_rateset(rn, ni);
403 	} else if (rn->probing & IEEE80211_RA_PROBING_UP) {
404 		if (ni->ni_txmcs == rn->max_mcs[nss - 1] ||
405 		    rn->probed_rates[nss - 1] & (1 << rn->max_mcs[nss - 1])) {
406 			ieee80211_ra_vht_trigger_next_rateset(rn, ni);
415 	next_mcs = ieee80211_ra_vht_next_mcs(rn, ni);
417 		ieee80211_ra_vht_trigger_next_rateset(rn, ni);
421 	g = &rn->g[rs->idx][ni->ni_txmcs];
424 		ieee80211_ra_vht_trigger_next_rateset(rn, ni);
429 	best_mcs = ieee80211_ra_vht_best_mcs_in_rateset(rn, rs);
431 		if ((rn->probing & IEEE80211_RA_PROBING_UP) &&
433 			ieee80211_ra_vht_trigger_next_rateset(rn, ni);
436 		if ((rn->probing & IEEE80211_RA_PROBING_DOWN) &&
438 			ieee80211_ra_vht_trigger_next_rateset(rn, ni);
444 	if ((rn->candidate_rates[nss - 1] & rn->probed_rates[nss - 1]) ==
445 	    rn->candidate_rates[nss - 1]) {
447 		rn->probing &= ~IEEE80211_RA_PROBING_INTER;
455 ieee80211_ra_vht_trigger_next_rateset(struct ieee80211_ra_vht_node *rn,
460 	rsnext = ieee80211_ra_vht_next_rateset(rn, ni);
462 		ieee80211_ra_vht_probe_next_rateset(rn, ni, rsnext);
463 		rn->probing |= IEEE80211_RA_PROBING_INTER;
465 		rn->probing &= ~IEEE80211_RA_PROBING_INTER;
469 ieee80211_ra_vht_inter_mode_ra_finished(struct ieee80211_ra_vht_node *rn,
472 	return ((rn->probing & IEEE80211_RA_PROBING_INTER) == 0);
476 ieee80211_ra_vht_best_rate(struct ieee80211_ra_vht_node *rn,
480 	int i, j, best_mcs = rn->best_mcs, best_nss = rn->best_nss;
485 	gmax = rn->g[rs->idx][best_mcs].measured;
490 			struct ieee80211_ra_vht_goodput_stats *g = &rn->g[i][j];
491 			if (((1 << i) & rn->valid_rates[rs->num_ss - 1]) == 0)
502 	if (rn->best_mcs != best_mcs || rn->best_nss != best_nss) {
512 				g = &rn->g[i][j];
513 				if ((rn->valid_rates[rs->num_ss - 1] &
525 	rn->best_mcs = best_mcs;
526 	rn->best_nss = best_nss;
530 ieee80211_ra_vht_probe_next_rate(struct ieee80211_ra_vht_node *rn,
534 	rn->probed_rates[ni->ni_vht_ss - 1] |= (1 << ni->ni_txmcs);
535 	ni->ni_txmcs = ieee80211_ra_vht_next_mcs(rn, ni);
540     struct ieee80211_node *ni, struct ieee80211_ra_vht_node *rn)
544 	memset(rn->max_mcs, 0, sizeof(rn->max_mcs));
545 	memset(rn->valid_rates, 0, sizeof(rn->valid_rates));
557 		rn->max_mcs[nss - 1] = max_mcs;
558 		rn->valid_rates[nss - 1] = ((1 << (max_mcs + 1)) - 1);
578 ieee80211_ra_vht_add_stats(struct ieee80211_ra_vht_node *rn,
604 	g = &rn->g[rs->idx][mcs];
612 	rn->valid_probes[nss - 1] |= 1U << mcs;
645 ieee80211_ra_vht_choose(struct ieee80211_ra_vht_node *rn,
656 	if (rn->valid_rates[0] == 0) {
657 		ieee80211_ra_vht_init_valid_rates(ic, ni, rn);
658 		if (rn->valid_rates[0] == 0)
663 	g = &rn->g[rs->idx][ni->ni_txmcs];
665 	if (rn->probing) {
667 		if (!(rn->valid_probes[nss - 1] & (1UL << ni->ni_txmcs))) {
672 		if (!ieee80211_ra_vht_intra_mode_ra_finished(rn, ni)) {
673 			ieee80211_ra_vht_probe_next_rate(rn, ni);
676 		} else if (ieee80211_ra_vht_inter_mode_ra_finished(rn, ni)) {
677 			ieee80211_ra_vht_best_rate(rn, ni);
678 			ni->ni_txmcs = rn->best_mcs;
679 			ni->ni_vht_ss = rn->best_nss;
680 			ieee80211_ra_vht_probe_done(rn, nss);
686 		rn->valid_probes[nss - 1] = 0;
695 		rn->probing = IEEE80211_RA_PROBING_DOWN;
696 		rn->probed_rates[nss - 1] = 0;
698 			rsnext = ieee80211_ra_vht_next_rateset(rn, ni);
700 				ieee80211_ra_vht_probe_next_rateset(rn, ni,
704 				rn->probing = IEEE80211_RA_NOT_PROBING;
707 			ni->ni_txmcs = ieee80211_ra_vht_next_mcs(rn, ni);
708 			rn->candidate_rates[nss - 1] = (1 << ni->ni_txmcs);
713 		rn->probing = IEEE80211_RA_PROBING_UP;
714 		rn->probed_rates[nss - 1] = 0;
715 		if (ni->ni_txmcs == rn->max_mcs[nss - 1]) {
716 			rsnext = ieee80211_ra_vht_next_rateset(rn, ni);
718 				ieee80211_ra_vht_probe_next_rateset(rn, ni,
722 				rn->probing = IEEE80211_RA_NOT_PROBING;
725 			ni->ni_txmcs = ieee80211_ra_vht_next_mcs(rn, ni);
726 			rn->candidate_rates[nss - 1] = (1 << ni->ni_txmcs);
730 		rn->probing = IEEE80211_RA_NOT_PROBING;
731 		rn->probed_rates[nss - 1] = 0;
732 		rn->candidate_rates[nss - 1] = 0;
737 	if (rn->probing) {
738 		if (rn->probing & IEEE80211_RA_PROBING_UP)
754 ieee80211_ra_vht_node_init(struct ieee80211_ra_vht_node *rn)
756 	memset(rn, 0, sizeof(*rn));
757 	rn->best_nss = 1;