LayerscapeのトピックRe: LS1046 Small packet transmission -- Network packet loss

LS1046 Small packet transmission -- Network packet loss

Hmc510 — Mon, 08 May 2023 07:25:57 GMT

LS1046：

I tried using the iperf3 tool to test TCP packet transmission.

find some retransmission in speed 10Mb/s . packet size is 60 byte.(net link is 100Mbps)

and the ethtool notify no drop\error packets find:

I am trying to count the number of network connections between PCs and board 1046:(use cmd netstat -i)

iperf3 notify the "Retr=13"

PC: Tx = 15506

1046: Rx= 15493 . (obvious lost "13" )

and my net chip is YT8614 use Serdes 0x3040 channel B(QSGMII x4).It provides network frame counting,and I read the regs the Rx packet is 15506.

So the packet received by the network chip(YT8614) is correct. and ethtool notify Rx=15493(lost 13) ,and (drop+error = 0).

Has the data packet been lost elsewhere? Serdes\Bman\Kernel? Do they have packet counting function for debug.

Thanks

yipingwang — Tue, 09 May 2023 09:24:14 GMT

Please refer to the following document

Hmc510 — Tue, 09 May 2023 10:16:49 GMT

Thank you for your reply

1. I have used this document and still have no leads.

2. What do these numerical values represent

yipingwang — Fri, 12 May 2023 09:56:36 GMT

Could you please share the LSDK version and kernel version info?

Hmc510 — Fri, 12 May 2023 10:21:51 GMT

pakcet is LSDK 2108

linux 5.10

yipingwang — Tue, 16 May 2023 03:43:50 GMT

Please refer to the update in this thread.