Ordering in hostapd

[Andy Johnson]

Hello,
  I just wondered : does hostapd handle ordering?

To be more specific: every frame (data, control and mgmt) should be ACKED.
Suppose that a first packet received in the AP is not ACKED, it should
be retransmitted, as we all know.
Suppose that a second packet is received in the AP before the first
retransmission is received in
the AP.
Does the AP handles a correct ordering ? or is it done inside the
mac80211 kernel stack?

( I appreciate if anybody will tell me where it is done in code, if at
all; grepping for "reorder"
gave nothing)

Rgs,
AndyJ