Bluetooth: RFCOMM: Implement MSC Flow Control
This is mainly for backward compatibility with 1.0b devices and for
spec compliance. CFC is mandatory post 1.0b spec where in MSC FC
shall not be used.
FC bit in MSC is used to manage the flow control. If FC is 1 then
the device is unable to accept frames.
Implementation is done by reusing "tx_credit" as a binary semaphore
wherein it will be blocked if MSC is recieved with FC bit 1 and
unblocked if FC bit is 0. Once tx thread is scheduled then semaphore
should be always available until all the buf in queue is sent.
Change-Id: I91181668ec0f46ff0b02905dd97e4503fc1fa7a7
Signed-off-by: Jaganath Kanakkassery <jaganathx.kanakkassery@intel.com>
3 files changed
