svn commit: r219981 - head/sys/dev/ath

Adrian Chadd adrian at
Fri Mar 25 04:15:31 UTC 2011

Author: adrian
Date: Fri Mar 25 04:15:30 2011
New Revision: 219981

  Re-disable the setting of 2040/shortgi bits for now.
  This seems to work fine for STA but not HT/20 AP mode.
  Further discussion with net80211 people will need to take place
  to ensure that the right flags are set based on the negotiated
  capabilities of the remote peer, rather than whatever the local
  parameters are.
  Sending short-gi frames in 20mhz may work on some chips but
  it certainly isn't supported on anything currently supported
  by the HAL; and sending HT40 frames in HT20 mode just plain
  won't work.


Modified: head/sys/dev/ath/if_ath_tx_ht.c
--- head/sys/dev/ath/if_ath_tx_ht.c	Fri Mar 25 00:45:24 2011	(r219980)
+++ head/sys/dev/ath/if_ath_tx_ht.c	Fri Mar 25 04:15:30 2011	(r219981)
@@ -129,9 +129,9 @@ ath_rateseries_setup(struct ath_softc *s
 			series[i].RateFlags |= HAL_RATESERIES_RTS_CTS;
+#if 0
 		if (ni->ni_htcap & IEEE80211_HTCAP_CHWIDTH40)
 			series[i].RateFlags |= HAL_RATESERIES_2040;
 		 * The hardware only supports short-gi in 40mhz mode -
 		 * if later hardware supports it in 20mhz mode, be sure
@@ -139,6 +139,7 @@ ath_rateseries_setup(struct ath_softc *s
 		if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40)
 			series[i].RateFlags |= HAL_RATESERIES_HALFGI;
 		series[i].Rate = rt->info[rix[i]].rateCode;

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