How to get packet arriving timestamp?

[cang233]

I set the

	config := flow.Config{
		CPUList:              "0-3",
		HWRXPacketsTimestamp: true,
	}

and use packet.GetPacketTimestamp() to get timestamp but return 0.

why?

[gshimansky]

This flag only enables capability of a NIC, it has to be supported by hardware to work correctly. AFAIK at the moment only Mellanox NICs support this feature, I implemented this flag for those cards. You can use flow.CheckHWCapability(flow.HWRXPacketsTimestamp) to query whether a network card supports this feature.

[cang233]

oh,I get it,thanks a lot!