How can I received a packet bigger than 9000 bytes from GBE interface!

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

Hi:
I want to receive data form a GBE interface camera, the camera use jumbo frame which bigger than 9000 bytes, I do below changes:
1. Change MTU size to 16380: change OSI_MTU_SIZE_9000 from 9000 to 16380 in file osi_core.h.
2. Compile kernel.
Now I can send net packet bigger than 9000 bytes such like 9800.(use ping command). But I can’t receive packet bigger than 9000 bytes, the biggest packets is 8970 bytes.
How can I received a packet bigger than 9000 bytes from GBE interface! Thank you!

3

Anyone can help?

7

There is a limitation that MTU size over 9000 is not supported with multiple DMA channel configuration.

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