Author: adrian
Date: Fri Dec 21 04:28:05 2012
New Revision: 244529
URL: http://svnweb.freebsd.org/changeset/base/244529
Log:
Note why fast frames is disabled for 802.11n NICs now.
It actually works, but net80211 handles A-MPDU and Fast frames
incorrectly; it tries enabling both in some instances, with tragic
results.
Modified:
head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Fri Dec 21 02:42:35
2012 (r244528)
+++ head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Fri Dec 21 04:28:05
2012 (r244529)
@@ -898,7 +898,13 @@ ar5416FillCapabilityInfo(struct ath_hal
pCap->halCompressSupport = AH_FALSE;
pCap->halBurstSupport = AH_TRUE;
- pCap->halFastFramesSupport = AH_FALSE; /* XXX? */
+ /*
+ * This is disabled for now; the net80211 layer needs to be
+ * taught when it is and isn't appropriate to enable FF processing
+ * with 802.11n NICs (it tries to enable both A-MPDU and
+ * fast frames, with very tragic crash-y results.)
+ */
+ pCap->halFastFramesSupport = AH_FALSE;
pCap->halChapTuningSupport = AH_TRUE;
pCap->halTurboPrimeSupport = AH_TRUE;
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