Kernel version: Official 3.14.43
Customers in the power industry deploy an embedded industrial platform based on AM3354 in the grid environment. AM3354 uses CPSW dual network ports, with DP83822 as the external PHY for network port 1
After a large number of ARP and multicast packets appear in the network environment for a long time, port 1 is in a state of communication failure, that is, unable to send and receive data, unable to ping, and cannot be restored after the storm is eliminated. However, after using ifconfig eth0 promisc to set port 1 to mixed mode, port 1 can ping
Using the ifconfig eth0 down/up command can also restore network port 1 to normal
When the network port 1 was shut down, there was no LinkDown event, and it is preliminarily judged that the PHY is not abnormal
At present, it is speculated that there is an abnormality in the MAC. May I ask the manufacturer how to investigate this issue and whether it is related to ALE
