tree 3a96d97adcbb4c47a349337a9d3943a54e2f06ce
parent 3230455d13860b26f638b9d58a8c5f20bf32fda2
author Bruno Randolf <bruno@thinktube.com> 1203301251 +0900
committer John W. Linville <linville@tuxdriver.com> 1204317431 -0500

mac80211: better definition of mactime

define mactime as the time when the first data symbol arrived at the HW. the
old definition was questionable because 802.11 defines timestamp only for
beacon and probe response frames, and there it means the timestamp field.

a stricter definition of mactime is necessary for correct merging of IBSS.

note that it is up to the driver to convert whatever its hardware returns to
this definition. unfortunately we don't know for example when atheros hardware
takes its rx timestamp exactly :(

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