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/freebsd-11-stable/sys/dev/ath/
H A Dif_ath_tx.cdiff 238961 Tue Jul 31 22:07:57 MDT 2012 adrian Allow 802.11n hardware to support multi-rate retry when RTS/CTS is
enabled.

The legacy (pre-802.11n) hardware doesn't support this - although
the AR5212 era hardware supports MRR, it doesn't have all the bits
needed to support MRR + RTS/CTS. The AR5416 and later support
a packet duration and RTS/CTS flags per rate scenario, so we should
support it.

Tested:

* AR9280, STA

PR: kern/170302
H A Dif_ath.cdiff 238961 Tue Jul 31 22:07:57 MDT 2012 adrian Allow 802.11n hardware to support multi-rate retry when RTS/CTS is
enabled.

The legacy (pre-802.11n) hardware doesn't support this - although
the AR5212 era hardware supports MRR, it doesn't have all the bits
needed to support MRR + RTS/CTS. The AR5416 and later support
a packet duration and RTS/CTS flags per rate scenario, so we should
support it.

Tested:

* AR9280, STA

PR: kern/170302

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