Linux/AM6548: Ethernet MTU value

user5772774

Intellectual 660 points

Part Number: AM6548

Tool/software: Linux

Linux version is 4.14.79+

Processor is AM6548

Doesn't Linux version 4.14.79+ support change MTU value of ethernet?

I can't change the MTU value of ethernet, so I can't enable the jumbo frame. after my investigation, I found the function 'eth_change_mtu()' is not be implemented in the driver '/drivers/net/ethernet/ti/prueth.c'.

when is it can be available ?

over 6 years ago

0 Nick Saulnier over 6 years ago

TI__Guru** 100740 points

Hello,

We will check if there is currently a plan to add support for jumbo frames on AM65x ICSSG Ethernet.

Regards,

Nick

0 Nick Saulnier over 6 years ago in reply to Nick Saulnier

TI__Guru** 100740 points

To clarify, are you asking about support for jumbo frames only on the PRU Ethernet? Or also on CPSW Ethernet?

Regards,

Nick

0 user5772774 over 6 years ago in reply to Nick Saulnier

Intellectual 660 points

Thanks, we currently only use PRU ethernet.

0 Nick Saulnier over 6 years ago in reply to user5772774

TI__Guru** 100740 points

When you say "jumbo frame", do you have a specific size in mind?

0 user5772774 over 6 years ago in reply to Nick Saulnier

Intellectual 660 points

According to me, the MTU can reach up to 9000.

0 Nick Saulnier over 6 years ago in reply to user5772774

TI__Guru** 100740 points

It does not look like we will add AM65x ICSSG Ethernet support for jumbo Ethernet frames.

Regards,

Nick

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Linux/AM6548: Ethernet MTU value