Re: XL710 VF driver can reply to ARP request but cannot reply to ICMP's

Hi Sandy,

The datasheet said "The receive descriptors could be reported instantly for each packet by setting the ITR_INDX to NoITR. Another option is enabling some coalescing of reported descriptors by using the ITR option. This option could be used for better PCIe and host memory bandwidth use at the expense of some possible latency of reporting the completed descriptor."

So I have modified the RTE_LIBRTE_I40E_ITR_INTERVAL macro to 6 in VF's code, then in the operation I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP, rxitr_idx equals to 3(NoITR). and I added some print in Linux PF driver( in function i40e_config_irq_link_list), it showed the itr_idx had already been set to 3. But the problem still exists. I don't know the reason. is there anything else neet to be set?

Thank you!

Regards,

Haifeng