assigning different eids to diffrent devices on i3c bus

[chandu-tmba]

I am trying to create two different local EIDs for communication with two devices on one I3C bus. Although I am able to create the local EIDs using the MCTP address command, the communication does not work with both EIDs. It only works with one EID. Is this the expected behavior?

In the output of the ip a command, I can see only one interface listed, which will be used for communication with different devices on the bus based on the PID, as per my understanding.

[jk-ozlabs]

Can you expand on:

the communication does not work with both EIDs

What does "does not work" mean there?

The ip addr output is not very helpful, mctp addr and mctp route will give you a better idea of the address/routing assignments.

Note that when sending outbound MCTP packets through an interface with multiple local addresses assigned, the kernel will chose an arbitrary (but constant) address for the source address of those packets. Are you expecting any particular behaviour for the source addresses?

[chandu-tmba]

Are you expecting any particular behaviour for the source addresses?

yes, when sending mctp packets to specific device on bus , i want to use specific local adrress assigned as source address of mctp packet based on pid of the target device

[jk-ozlabs]

OK. That is not supported at present.