Re: [PATCH v6 net-next 2/5] net: implement support for low latencysocket polling

From: Or Gerlitz
Date: Wed May 29 2013 - 14:52:28 EST


Eliezer Tamir <eliezer.tamir@xxxxxxxxxxxxxxx> wrote:
> Or Gerlitz wrote:

>> Unlike with TCP sockets, UDP sockets may receive packets from multiple
>> sources and hence the receiving context may be steered to be executed
>> on different cores through RSS or other Flow-Steering HW mechanisms
>> which could mean different napi contexts for the same socket, is that
>> a problem here? what's the severity?

> Nothing will break if you poll on the wrong queue.
> Your data will come through normal NAPI processing of the right queue.

Can you elaborate a little further, why you call this "wrong" and "right"?
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