3 /*-
6  * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
56  * Get the driver rate set for the current operating rateset(s).
58  * rates_p is set to a mask of 11abg ridx values (not HW rate values.)
59  * htrates_p is set to a mask of 11n ridx values (not HW rate values),
64  * If basic_rates is 1 then only the 11abg basic rate logic will
81 	for (i = 0; i < rs->rs_nrates; i++) {  in rtwn_get_rates()
82 		/* Convert 802.11 rate to HW rate index. */  in rtwn_get_rates()
83 		ridx = rate2ridx(IEEE80211_RV(rs->rs_rates[i]));  in rtwn_get_rates()
84 		if (ridx == RTWN_RIDX_UNKNOWN)	/* Unknown rate, skip. */  in rtwn_get_rates()
86 		if (((rs->rs_rates[i] & IEEE80211_RATE_BASIC) != 0) ||  in rtwn_get_rates()
96 		for (i = 0; i < rs_ht->rs_nrates; i++) {  in rtwn_get_rates()
97 			uint8_t rate = rs_ht->rs_rates[i] & 0x7f;  in rtwn_get_rates()  local
98 			bool is_basic = rs_ht->rs_rates[i] &  in rtwn_get_rates()
100 			/* Only do up to 2-stream rates for now */  in rtwn_get_rates()
101 			if ((rate) > 0xf)  in rtwn_get_rates()
107 			ridx = rate & 0xf;  in rtwn_get_rates()
110 			/* Guard against the rate table being oddly ordered */  in rtwn_get_rates()
138  * Configure the initial RTS rate to use.
146 	 * We shouldn't set the initial RTS/CTS generation rate  in rtwn_set_rts_rate()
147 	 * as the highest available rate - that may end up  in rtwn_set_rts_rate()
150 	 * Instead, choose a suitable low OFDM/CCK rate based  in rtwn_set_rts_rate()
151 	 * on the basic rate bitmask.  Assume the caller  in rtwn_set_rts_rate()
159 		device_printf(sc->sc_dev,  in rtwn_set_rts_rate()
160 		    "WARNING: no configured basic RTS rate!\n");  in rtwn_set_rts_rate()
163 	ridx = fls(rates) - 1;  in rtwn_set_rts_rate()
178 	/* Convert antenna signal to percentage. */  in rtwn_update_avgrssi()
179 	if (rssi <= -100 || rssi >= 20)  in rtwn_update_avgrssi()
191 			pwdb -= 4;  in rtwn_update_avgrssi()
193 			pwdb -= 8;  in rtwn_update_avgrssi()
195 			pwdb -= 6;  in rtwn_update_avgrssi()
197 			pwdb -= 2;  in rtwn_update_avgrssi()
200 	if (un->avg_pwdb == -1)	/* Init. */  in rtwn_update_avgrssi()
201 		un->avg_pwdb = pwdb;  in rtwn_update_avgrssi()
202 	else if (un->avg_pwdb < pwdb)  in rtwn_update_avgrssi()
203 		un->avg_pwdb = ((un->avg_pwdb * 19 + pwdb) / 20) + 1;  in rtwn_update_avgrssi()
205 		un->avg_pwdb = ((un->avg_pwdb * 19 + pwdb) / 20);  in rtwn_update_avgrssi()
208 	    "MACID %d, PWDB %d, EMA %d\n", un->id, pwdb, un->avg_pwdb);  in rtwn_update_avgrssi()
253 	rxdw3 = le32toh(stat->rxdw3);  in rtwn_extend_rx_tsf()
254 	tsfl = le32toh(stat->tsf_low);  in rtwn_extend_rx_tsf()
270 		if (abs(tsfl0 - tsfl) < abs(tsfl1 - tsfl)) {  in rtwn_extend_rx_tsf()
283 		tsft--;  in rtwn_extend_rx_tsf()
293 	struct ieee80211com *ic = &sc->sc_ic;  in rtwn_rx_common()
305 	rxdw0 = le32toh(stat->rxdw0);  in rtwn_rx_common()
313 	if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) &&  in rtwn_rx_common()
315 		m->m_flags |= M_WEP;  in rtwn_rx_common()
319 		if (ni != NULL && (ni->ni_flags & IEEE80211_NODE_HT))  in rtwn_rx_common()
320 			m->m_flags |= M_AMPDU;  in rtwn_rx_common()
328 		physt = (un != NULL) ? &un->last_physt : &sc->last_physt;  in rtwn_rx_common()
334 		memcpy(&sc->last_physt, physt, sizeof(sc->last_physt));  in rtwn_rx_common()
336 			memcpy(&un->last_physt, physt, sizeof(sc->last_physt));  in rtwn_rx_common()
350 	if (sc->sc_ena_tsf64) {  in rtwn_rx_common()
355 		rxs.c_rx_tsf = le32toh(stat->tsf_low);  in rtwn_rx_common()
362 	/* XXX TODO: we really need a rate-to-string method */  in rtwn_rx_common()
363 	RTWN_DPRINTF(sc, RTWN_DEBUG_RSSI, "%s: rssi %d, rate %d\n",  in rtwn_rx_common()
372 	rxs.c_rssi = rssi - rxs.c_nf;  in rtwn_rx_common()
376 		struct rtwn_rx_radiotap_header *tap = &sc->sc_rxtap;  in rtwn_rx_common()
378 		tap->wr_flags = rtwn_rx_radiotap_flags(sc, desc);  in rtwn_rx_common()
379 		tap->wr_tsft = htole64(rxs.c_rx_tsf);  in rtwn_rx_common()
380 		tap->wr_rate = rxs.c_rate;  in rtwn_rx_common()
381 		tap->wr_dbm_antsignal = rssi;  in rtwn_rx_common()
382 		tap->wr_dbm_antnoise = rxs.c_nf;  in rtwn_rx_common()
389 	if (sc->rcr & R92C_RCR_APPFCS)  in rtwn_rx_common()
390 		m_adj(m, -IEEE80211_CRC_LEN);  in rtwn_rx_common()
400 	struct ieee80211vap *vap = ni->ni_vap;  in rtwn_adhoc_recv_mgmt()
401 	struct rtwn_softc *sc = vap->iv_ic->ic_softc;  in rtwn_adhoc_recv_mgmt()
405 	uvp->recv_mgmt(ni, m, subtype, rxs, rssi, nf);  in rtwn_adhoc_recv_mgmt()
407 	if (vap->iv_state == IEEE80211_S_RUN &&  in rtwn_adhoc_recv_mgmt()
410 		ni_tstamp = le64toh(ni->ni_tstamp.tsf);  in rtwn_adhoc_recv_mgmt()
412 		rtwn_get_tsf(sc, &curr_tstamp, uvp->id);  in rtwn_adhoc_recv_mgmt()
430 				pos ^= (mask >> (i * 8 + j - 1));  in rtwn_get_multi_pos()
452 	struct ieee80211com *ic = &sc->sc_ic;  in rtwn_set_multi()
458 	if (ic->ic_allmulti == 0) {  in rtwn_set_multi()
465 		TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)  in rtwn_set_multi()
466 			if_foreach_llmaddr(vap->iv_ifp, rtwm_hash_maddr, mfilt);  in rtwn_set_multi()
483 	if (sc->bcn_vaps == 0) {	/* STA and/or MONITOR mode vaps */  in rtwn_rxfilter_update_mgt()
489 	if (sc->ap_vaps == sc->nvaps - sc->mon_vaps) {	/* AP vaps only */  in rtwn_rxfilter_update_mgt()
526 	sc->rcr |= R92C_RCR_AM | R92C_RCR_AB | R92C_RCR_APM |  in rtwn_rxfilter_init()
537 	sc->rcr |= R92C_RCR_APPFCS;  in rtwn_rxfilter_init()
546 	if (!(sc->sc_flags & RTWN_RCR_LOCKED))  in rtwn_rxfilter_set()
547 		rtwn_write_4(sc, R92C_RCR, sc->rcr);  in rtwn_rxfilter_set()
555 		sc->rcr &= ~R92C_RCR_CBSSID_BCN;  in rtwn_set_rx_bssid_all()
557 		sc->rcr |= R92C_RCR_CBSSID_BCN;  in rtwn_set_rx_bssid_all()
564 	struct ieee80211com *ic = &sc->sc_ic;  in rtwn_set_promisc()
572 	if (sc->bcn_vaps == 0)  in rtwn_set_promisc()
574 	if (sc->ap_vaps == 0)  in rtwn_set_promisc()
577 	if (ic->ic_promisc == 0 && sc->mon_vaps == 0) {  in rtwn_set_promisc()
578 		if (sc->bcn_vaps != 0)  in rtwn_set_promisc()
580 		if (sc->ap_vaps != 0)	/* for Null data frames */  in rtwn_set_promisc()
583 		sc->rcr &= ~mask_all;  in rtwn_set_promisc()
584 		sc->rcr |= mask_min;  in rtwn_set_promisc()
586 		sc->rcr &= ~mask_min;  in rtwn_set_promisc()
587 		sc->rcr |= mask_all;  in rtwn_set_promisc()
594 	sc->rcr |= R92C_RCR_APPFCS;  in rtwn_set_promisc()