[U-Boot-Users] Issue with Ethernet operation in non-promiscuous mode.

Ben Warren bwarren at qstreams.com
Thu Dec 27 16:30:03 CET 2007

Hi Upakul,

Upakul Barkakaty wrote:
> Hi all,
> I am using an ethernet driver, working in Polling mode, ARM 
> architecture. It works fine in Promiscuous mode. However, when the 
> promiscuous mode is disabled, then the network operations are not 
> functional. Does the Uboot network stack have any limitation, or is it 
> a bug in the ethernet driver itself? Please share your inputs.
Your description is a bit vague... I don't know what type of traffic 
you're dealing with, what commands you're using etc.  Enabling 
promiscuous mode essentially bypasses any hardware MAC address matching 
that your controller does and thus lets everything in.  Since that 
works,  the driver is probably fine, and I suspect that you haven't 
properly configured a valid unicast MAC address.


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