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Date: Thu, 2 Jan 2014 08:36:16 -0800
From: Stephen Hemminger <stephen@networkplumber.org>
To: Mats Liljegren <liljegren.mats2@gmail.com>
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] RFC: Introduce host_ifname field to struct
 rte_eth_dev_info
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On Wed, 4 Dec 2013 16:39:05 +0100
Mats Liljegren <liljegren.mats2@gmail.com> wrote:

> I played around with pcap to compare it against "pure" DPDK user-space
> driver. I realized that interrupt affinity suddenly becomes important,
> since it uses interrupts. So I needed a way to set it.
> 
> The only place where I know which core will handle which pcap
> interface, is within my DPDK application. But DPDK did not save the
> host interface name anywhere, so it was nowhere to be found.
> 
> I created a patch for this, found below. Is this something that could
> be upstreamed?
> 
> Best regards
>   Mats Liljegren

interface name can be changed while application is running not sure
if you want to cache it! Ifindex can't change.

Also, if you use sysfs you can get/set irq_affinity based on PCI address.