If we have a 4-byte data digest to send to the wire, but we
have more data to send, set MSG_MORE to tell the stack
that more is coming.
Reviewed-by: NMark Wunderlich <mark.wunderlich@intel.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NKeith Busch <kbusch@kernel.org>