ath_rate/amrr/amrr.c

43  * AMRR rate control. See:
83 static	int ath_rateinterval = 1000;		/* rate ctl interval (ms)  */
88 			int rate);
122  * the returned rate with the relevant preamble rate flag.
212  * The code below assumes that we are dealing with hardware multi rate retry
218 ath_rate_update(struct ath_softc *sc, struct ieee80211_node *ni, int rate)
226 	KASSERT(rt != NULL, ("no rate table, mode %u", sc->sc_curmode));
229 	    "%s: set xmit rate to %dM", __func__,
231 		(ni->ni_rates.rs_rates[rate] & IEEE80211_RATE_VAL) / 2 : 0);
233 	amn->amn_rix = rate;
235 	 * Before associating a node has no rate set setup
239 	 * lowest hardware rate.
242 		ni->ni_txrate = ni->ni_rates.rs_rates[rate] & IEEE80211_RATE_VAL;
252 			if (--rate >= 0) {
254 						    ni->ni_rates.rs_rates[rate]&IEEE80211_RATE_VAL];
261 			if (--rate >= 0) {
263 						    ni->ni_rates.rs_rates[rate]&IEEE80211_RATE_VAL];
270 			if (rate > 0) {
300  * Set the starting transmit rate for a node.
312 		 * No fixed rate is requested. For 11b start with
313 		 * the highest negotiated rate; otherwise, for 11g
319 			 * Scan the negotiated rate set to find the
320 			 * closest rate.
322 			/* NB: the rate set is assumed sorted */
328 		 * A fixed rate is to be used; ic_fixed_rate is the
329 		 * IEEE code for this rate (sans basic bit).  Convert this
330 		 * to the index into the negotiated rate set for
331 		 * the node.  We know the rate is there because the
332 		 * rate set is checked when the station associates.
334 		/* NB: the rate set is assumed sorted */
340 	 * The selected rate may not be available due to races
342 	 * adhoc mode may not have any rate set so this lookup
350  * Examine and potentially adjust the transmit rate.
380 			    "increase rate to %d", rix);
394 				    "decrease rate recovery thr: %d",
401 				    "decrease rate normal thr: %d",
440 		"rate control: operation interval (ms)");