Directed Multicast Service (DMS) allows a client to request the AP
to convert multicast frames that match a certain traffic classifier
into unicast frames for the client. This request can be sent either
as a DMS Request Information Element in the Association/Reassociation
Request frame or explicitly via a DMS Request Action Frame after the
client has completed association. If the AP accepts the DMS Request,
all multicast frames matching the traffic classifier specified in the
DMS Request will be unicasted directly to the client as an AMSDU.
The original multicast frame will still be transmitted for the benefit
of those clients that do not support or request for DMS.
Add new CB ftype to differentiate data packets intended for DMS subscribed
clients
CRs-Fixed: 2056341
Change-Id: I687e4f4d182869753e2c3670ec07aa64f95fda1b
8b2d1c7c05