On Feb 18, 2009, at 11:22 AM, Scott Coulter wrote:

Kumar,

quoted

I'm told this will occur when:

quoted

Transmitted frame > MAXFRM and MACCFG2[Huge En] = 0.

In the driver it looks like the MACCFG2_HUGEFRAME only gets set if the
mtu > DEFAULT_RX_BUFFER_SIZE (1536 in my kernel).  It appears as  
though
the mtu is set to 1500.  Under what conditions would the driver  
attempt
to send a frame larger than the mtu?

can't think of any.  How about adding a BUG_ON() in the tx path to see  
if the buffer size > MTU and re-run your tests.

- k