i.MX Processors中的主题 i.MX28 FEC Testing

i.MX28 FEC Testing

jkuz — Mon, 12 Mar 2018 13:44:49 GMT

Hi,

I have been doing some network testing on an i.MX28 running 2.6.35_maintain kernel.

It seems that even on a point-to-point connection, there are many TCP re-transmissions from the host PC, and occasionally duplicate ACKs from the i.MX. Using Wireshark to monitor traffic, it will also give warnings that the receiver (i.MX) TCP window is full.

This seems to indicate that the i.MX is not handling packets fast enough. Is this an issue that has been seen and addressed before? Any help is appreciated.

Some other details:

Testing done with iperf3

i.MX on eth0 – hardware based on EVK design

2.6.35_maintain kernel

Re: i.MX28 FEC Testing

b36401 — Thu, 15 Mar 2018 09:22:45 GMT

Please check if the hardware (cable, etc) is OK.
Also please note that i.MX series are more multimedia than networking processors.

Have a great day,
Victor

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Re: i.MX28 FEC Testing

fabio_estevam — Thu, 15 Mar 2018 13:13:25 GMT

Hi Jason,

Kernel 2.6.35 is no longer supported. I suggest you to try a recent kernel on mx28, such as 4.15.