[lwip-users] Re: Try to Increase Jumbo Packet size beyond 9K

[Gary Olson]

Hi,

  I asked the Xilinx Forum about increasing packets above 9K and was told that the TEMAC will not work above 9K.  I think the TEMAC

Will stop working at 8192 since I have tried testing my software above that number and cannot get it to work.

 

How would I turn off CRC checking in LWIP.  I would like to see if this will increase thruput.  I have right now set up checksum offload

To the TEMAC.  It helped about 20%. 

 

Thank you Bill and Rishi for your input.

 

Rishi,

I don’t understand the changing Window solution you mentioned.  And even though I looked at the code it seems very complicated to change my tcp code.

I am using Jumbo packets up to 8080 bytes and the Temac stops working at 8192 bytes.  The Temac can’t expand receiving data very much on the Xilinx Board.

 

Thank You,

  Gary Olson