tree f673c08009a03f2e988a638510b112a5584bea11
parent 9607e6b66a0d25ca63b70d54a4283fa13d8f7c9d
author Johannes Berg <johannes@sipsolutions.net> 1261570532 +0100
committer John W. Linville <linville@tuxdriver.com> 1262037291 -0500

mac80211: introduce flush operation

We've long lacked a good confirmation that frames
have really gone out, e.g. before going off-channel
for a scan. Add a flush() operation that drivers
can implement to provide that confirmation, and use
it in a few places:
 * before scanning sends the nullfunc frames
 * after scanning sends the nullfunc frames, if any
 * when going idle, to send any pending frames

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>