There have been multiple complains in the past about the efficiency of the zero copy RX and TX Ethernet buffer management. But this is not solved in any of the past releases. It is getting very difficult to build a real project out of this.
I suspect the problem is in the RX buffers overflow. The zero copy RX buffer may be occupied by the lwip stack for processing, when the new ethernet frame arrives but since there is no more buffer available to capture there is overflow happening. Please provide a solution for this or there should be two configuration one for zero copy and another for with copy method.
Is there any future plan to correct this or I should look for other options.
Tushar
