Felix Fietkau 22c5350baa ath9k: fix transmitting to stations in dynamic SMPS mode
When transmitting to a receiver in dynamic SMPS mode, all transmissions that
use multiple spatial streams need to be sent using CTS-to-self or RTS/CTS to
give the receiver's extra chains some time to wake up.
This fixes the tx rate getting stuck at <= MCS7 for some clients, especially
Intel ones, which make aggressive use of SMPS.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: maurerr <mariusd84@gmail.com>
2021-09-01 08:07:36 +00:00
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