The unidirection DMA read only or write only of my PCIE NIC controller V5-based works fine .
However,if DMA read(from host--->ethernet port) is progress ,additional i send ping packet continuing from Host or client.the NIC will doesn't work.the send/receive is stoppped.
But,if DMA write(from ethernet --->host) is progress,additional i send ping packet continuing from Host or client. it still works fine.
who can provide any clue to debug the issue?