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Re: [Qemu-devel] vmxnet3 iPXE compatibility


From: Dmitry Fleytman
Subject: Re: [Qemu-devel] vmxnet3 iPXE compatibility
Date: Wed, 27 Mar 2013 18:56:15 +0200

Hi Stefan,

The issue is we never tested this device with iPXE, so according to Murphy's law it cannot work :).
We'll take a look...

Dmitry.

On Mon, Mar 25, 2013 at 2:26 PM, Stefan Hajnoczi <address@hidden> wrote:
Hi Dmitry,
QEMU vmxnet3 produces the following warning with iPXE
(77f64b11f764e721f4f8704b7b90317e52d85fc3):

$ cd ~/ipxe/src
$ make bin/vmxnet3.rom
$ qemu-system-x86_64 -netdev user,id=netdev0 -device
vmxnet3,netdev=netdev0,romfile=bin/vmxnet3.rom
[vmxnet3][WR][vmxnet3_peer_has_vnet_hdr]: Peer has no virtio
extension. Task offloads will be emulated.
[vmxnet3][WR][vmxnet3_get_command_status]: Received request for
unknown command: cafe0002

The warning about virtio extensions is expected since I chose slirp networking.

iPXE does not show the NIC ('ifstat' command).  I guess the driver
gave up during initialization:

https://git.ipxe.org/ipxe.git/blob/HEAD:/src/drivers/net/vmxnet3.c#l613

Any ideas?

Stefan

PS: I discovered this when testing net patches for the pull request I
just sent out.  It's not a blocker, so vmxnet3 will finally be in
qemu.git/master very soon!


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