tree 31b8b03a4a6652a34883ed66b353408eb22d3124
parent 77169ebae490b1adaeb25777b33aca5aefefaeba
author Johannes Berg <johannes.berg@intel.com> 1426947943 +0100
committer Marty Faltesek <mfaltesek@google.com> 1431390581 -0400

mac80211: add TX fastpath

In order to speed up mac80211's TX path, add the "fast-xmit" cache
that will cache the data frame 802.11 header and other data to be
able to build the frame more quickly. This cache is rebuilt when
external triggers imply changes, but a lot of the checks done per
packet today are simplified away to the check for the cache.

There's also a more detailed description in the code.

Change-Id: Ia60b2905b5f9a84c549598f57eba581aae76b772
Signed-off-by: Johannes Berg <johannes.berg@intel.com>