tree 3b200b80b2f494fe2084472204a93c4c51bc55b0
parent a839e463e84a02c0ea65ff61504b56a83e193078
author Johannes Berg <johannes.berg@intel.com> 1426947943 +0100
committer Johannes Berg <johannes.berg@intel.com> 1429689745 +0200

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.

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