[Intel-wired-lan] i40e: How the packets will be processed when status_error_len is 0

[Haifeng Xu]

Hi all,

        If the packets arrive at the rx and then raise soft irq to handle it, 
but in i40e_clean_rx_irq, status_error_len is 0 and return.
        The data isn't fetchted from the rx buffer, so the how the packets 
arrive at the rx will be processed?
        
        FYI, the every rx/tx queue has been bounded to one cpu(64 queues, 64 
cpus).

Thanks!