K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2011-08-16T06:26:51.754111Z
K 7
svn:log
V 1108
Begin to flesh out the 11n aggregation fields needed in ath_buf.

The reference driver splits out the descriptor setup and rate series
setup into functions separate from the initial TX path from net80211.

The descriptor decisions are made during the ath_tx_start() / ath_tx_raw_xmit()
calls, but the rate control selection is done at packet scheduling time.
(I'll have to handle raw frames differently, preserving the rate control
being requested by the caller.)

I may not end up using all of these fields, but the basic premise still
holds - ie, in order to do aggregation, I need to delay the descriptor
setup until the aggregates are formed, and then only set the rate
control flags on the first packet of the series. (Then I have to set
the 11n aggregation fields in the first descriptor of each subframe.)

Since I'm going for a unified TX path between legacy and non-legacy
NICs, I'll have to squirrel away 11n and non-11n copies of the
rate control decisions; and then use the correct set when setting
up the multi-rate retry fields (either ath_hal_setupxtxdesc(),
or ath_hal_set11nratescenario()).

END