tree 945d0486a2bb79e37ee7bde7ea9de510362f5c0d
parent 5af55428858a45d94893fd6124d60988e89c0d59
author Juuso Oikarinen <juuso.oikarinen@nokia.com> 1271921268 +0300
committer John W. Linville <linville@tuxdriver.com> 1272305500 -0400

mac80211: Fix sta->last_tx_rate setting with no-op rate control devices

The sta->last_tx_rate is traditionally updated just before transmitting a
frame based on information from the rate control algorithm. However, for
hardware drivers with IEEE80211_HW_HAS_RATE_CONTROL this is not performed,
as the rate control algorithm is not executed, and because the used rate is
not known before the frame has actually been transmitted.

This causes atleast a fixed 1Mb/s to be reported to user space. A few other
instances of code also rely on this information.

Fix this by setting the sta->last_tx_rate in tx_status handling. There, look
for last rates entry set by the driver, and use that as value for
sta->last_tx_rate.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>