Disable eth store and forward mode

Technical Support
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1

Hi,

We would like to use jumbo frames to send UDP video stream pacakges at Colibri. Destination is a fixed device and no other switch/router exist.

After some research, found this question, and it directs to NXP forums page. But to patch does not exist.

When checked the NPX forum page, a comment denotes disabling the store-and-forward mode allows bigger frames. After some search at the kernel source, I found this line denotes enables store and forward mode:

https://git.toradex.com/cgit/linux-toradex.git/tree/drivers/net/ethernet/freescale/fec_main.c?h=Colibri-iMX6_LXDE-Image_2.8b4.129-20181005#n1072

Also, I have checked eth KSZ8041NL chip driver, which is located at drivers/net/phy/micrel.c at kernel source, but couldn’t figure out is capable of disabling that mode.

Also, we do not have throuhgput more than 400Mbps limit that noted at ERR004512:

Is it the right way to comment out this line to disable store-and-forward mode ?

How can I disable store-and-forward mode ?

Thanks,

2

Hello @huseyinkozan ,

Thank you for your patience with this query. Have you perhaps already checked a similiar community thread here:

Other thsn that, I am afraid we don’t have much to add.

Best Regards,
Janani

3

Any updates on this topic from your side, @huseyinkozan?

4

Hi,

Sorry for the late response. I have not enough time for this to try. I’ll inform if any progress.

5

Ok. Thanks for the feedback. We will wait for your answer.