PERFORCE change 80570 for review

[Sam Leffler]

http://perforce.freebsd.org/chv.cgi?CH=80570

Change 80570 by sam at sam_ebb on 2005/07/20 01:01:06

	fix short preamble handling for mcast frames

Affected files ...

.. //depot/projects/wifi/sys/dev/ath/if_ath.c#90 edit

Differences ...

==== //depot/projects/wifi/sys/dev/ath/if_ath.c#90 (text+ko) ====

@@ -3860,7 +3860,7 @@
 		 */
 		if (ismcast) {
 			/*
-			 * Check mcast rate setting in case it changed.
+			 * Check mcast rate setting in case it's changed.
 			 * XXX move out of fastpath
 			 */
 			if (ic->ic_mcast_rate != sc->sc_mcastrate) {
@@ -3870,6 +3870,8 @@
 			}
 			rix = sc->sc_mcastrix;
 			txrate = rt->info[rix].rateCode;
+			if (shortPreamble)
+				txrate |= rt->info[rix].shortPreamble;
 			try0 = ATH_TXMAXTRY;
 		} else {
 			ath_rate_findrate(sc, an, shortPreamble, pktlen,