TsctlCANBaudSetDesc
From embeddedTS Manuals
Change the baud rate of the CAN medium to the closest supported value to that requested. Returns the actual baud rate on return.
The baud rate should always be set before attempting to send or receive any messages. The tsctl client in direct mode retains the previous baud rate between invocations so it is not necessary to set it with each invocation.
On error, a negative error code is returned.