Some profiles specify some restriction depending on the length
of the key used to encrypt the link, this adds an way to retrieve
that value from the kernel.
This patch adds support for the BT_FLUSHABLE L2CAP socket option through
BtIO. This can be used to mark data from specific L2CAP sockets to have
the flushable flag set in their corresponding ACL packets.
Btio library is the low level socket API for BT RFCOMM connection. We
share the same library among BlueZ, Obex and oFono. So make sure you
synchronize to other two projects when you make changes to btio.[ch].
Luiz Augusto von Dentz
Vinicius Costa Gomes
Johan Hedberg
Marcel Holtmann
Claudio Takahasi
Zhenhua Zhang