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From: Tomasz K <tomasz.kasowicz@gmail.com>
Date: Fri, 18 Apr 2014 14:37:00 +0200
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To: Thomas Monjalon <thomas.monjalon@6wind.com>
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Cc: dev <dev@dpdk.org>, B Gopikrishna <b.gopikrishna@tcs.com>
Subject: Re: [dpdk-dev] rte_eth_dev_configure fails on VM with e1000 drivers
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Hi Gopi
I recently run into the same problem when using 82576 with igb_uio on VM.
The problem is not e1000 or igb. The problem is with the other network
device managed by virtio-pci driver

Notice that when application polls for ETH devices it prints out
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
EAL:   0000:00:03.0 not managed by UIO driver, skipping

So even though this NIC is not managed by igb_uio driver the app prints
that driver used for it is rte_virtio_pmd.
After setting up ETH devices app tries to set up tx/rx queues and it fails
on port 0 (which is virtio)

You can try and run the application with -p 0x6 instead of 0x3. This should
mask out port0 from configuration

Thanks
Tomasz

2014-04-18 14:31 GMT+02:00 Thomas Monjalon <thomas.monjalon@6wind.com>:

> Hi,
>
> 2014-04-18 17:39, B Gopikrishna:
> > when I run the l3fwd application with the below command line, I am
> observing
> > the error "Cannot configure device: err=-22, port=0". The complete log is
> > posted below.
>
> Could you try to reproduce it with the git HEAD version?
> It may be fixed by this commit:
>         d73d8f3   timer: fix TSC frequency by not reading /proc/cpuinfo
>
> --
> Thomas
>