TMDS64GPEVM: Question about the maximum size of ENET tx dma channel and ENET rx dma channel

Hi,

Thanks for your question. I will check and come back to you.

Best Regards

Ashwani

Thank you very much! Some updates ! By retesting, it seems the size of the TX and RX dma channel limits the number of packets that R5 can receive. Actually, by implementing a the counter in the Rx queue if R5, it is egal to the size of the RX and TX dma channel with a baudrate of 1 packet/100ms . On the top of that, wireshark justifies the answer by printing out the number of packets that R5 echos back to the host computer is also egal to the RX dma channel. I'm very confused and wondering if this issue is from the dma which can't rertieve fast enough the packets.

Best regards

Hi,

I was out of office for last week, So could not spend time on this. Now, I am back and working on this.

Please expect some update by next week.

Best Regards

Ashwani

Hi,

Sorry for delay in response.

I need some more info about your use case.

Which board you are working on (AM64x-PG1/2) ?

What is packet size ?

What is burst size and rate coming to board port ?

Best Regards

Ashwani

Hi !: no worries !

Which board you are working on (AM64x-PG1/2) ?

It's an AM64x TMDS64GPEVM

https://www.ti.com/tool/TMDS64GPEVM?utm_source=google&utm_medium=cpc&utm_campaign=epd-null-null-prodfolderdynamic-cpc-pf-google-wwe_int&utm_content=prodfolddynamic&ds_k=DYNAMIC+SEARCH+ADS&DCM=yes&gclid=Cj0KCQiApKagBhC1ARIsAFc7Mc49EgHmAyjC7lWArJgyYCy4Wy6g_CkQu3Hn5CGNXu9PZ6N06t8sMF4aArUCEALw_wcB&gclsrc=aw.ds

What is packet size ?

The packet size is 1536 bytes

What is burst size and rate coming to board port ?

I  have a C program that sends ethernet frames with a for loop ! And there is a sleep(0.1) between each packets sent. Therefore,  each 100ms, I send 1 packet.

Best regards

Tianyi