This patch adds checking for proper msg size verification in case it is
not declared in handlers that this is variable sized message. In
such case malformed data should not be accepted.
This patch adds test for variable length data handling. Handlers struct
have static values representing minimum payload. It cannot be predicted
how large data will be sent so they should accept data larger than
declared inside ipc_handler array, which holds the minimum size of such
message.
This patch adds sending messages larger than just hal_hdr, and fixes
response verification which worked only for empty messages but was
failing when sending something more than just header.
This patch adds tests for calling proper opcode handler. Two handlers
are registered, but one always results in failure. No failure means that
proper opcode <-> handler maching is done by the ipc mechanism.
This handler responses for opcode == 1, thus should use proper naming to
avoid confision when more functions sending different responses will be
added.
This fix makes sure that when signalled termination is expected,
it actually happens. If IPC termination is expected no response will be
sent, so cmd_watch will never be executed. But if it is executed when
expecting termination, its a failure.
