I have a project where I want to receive Ethernet message for 2 different MAC addresses. I have code that receives a MAC that I have assigned to the Ethernet-port/RTCS stack. I can see these messages in the receive-Ethernet-message-call-backs I have set up. Now I want to also receive a 2nd set of Ethernet messages with a different MAC address. I want both MAC address to make it back to my receive-Ethernet-message-call-back function.
Question: What is the easiest way of doing this?
I thought the easiest way was to open up the MAC hardware filter on the Freescale processor. But, I inspected the ENET_IAUR, ENET_IALR, ENET_GAUR and ENET_GALR registers using the debugger and see that they are all zero! So, I assumed promiscuous mode was enabled. So I inspected ENET_RCR-PROM and see that that bit is 0. That is, promiscuous mode is disabled!
Question: How is this possible to receive any Ethernet messages if all the hardware MAC filters are set to block all messages?
My code is running and I can receive Ethernet messages with the MAC I have used to configure my code thus far. And I have check alternative MAC address and do not see them. So there is filtering going on somewhere.
Question: Where does MQX filter the inbound MAC addresses?