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From: Dmitry Fleytman <dmitry@daynix.com>
Date: Thu, 28 Mar 2013 10:42:17 +0200
Message-ID: <CAGHCxheEEGaP+jo6L=wGsswWetmf1R6jATQnzF9jdrjZOPYL4g@mail.gmail.com>
Content-Type: multipart/alternative; boundary=14dae93409e907dcf004d8f823df
Subject: Re: [Qemu-devel] vmxnet3 iPXE compatibility
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Yan Vugenfirer <yan@daynix.com>, qemu-devel <qemu-devel@nongnu.org>

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Indeed unlike Windows and Linux iPXE vmxnet3 driver makes additional
assumptions regarding device functionality.
I've fixed this and verified proper iPXE functionality (latest version).
Will submit patch in a separate mail.


On Wed, Mar 27, 2013 at 6:56 PM, Dmitry Fleytman <dmitry@daynix.com> wrote:

> 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 <stefanha@gmail.com>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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<div dir=3D"ltr">Indeed unlike Windows and Linux iPXE vmxnet3 driver makes =
additional assumptions regarding device functionality.<div>I&#39;ve fixed t=
his and verified proper iPXE functionality (latest version). Will submit pa=
tch in a separate mail.</div>


<div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Wed, Mar 2=
7, 2013 at 6:56 PM, Dmitry Fleytman <span dir=3D"ltr">&lt;<a href=3D"mailto=
:dmitry@daynix.com" target=3D"_blank">dmitry@daynix.com</a>&gt;</span> wrot=
e:<br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi Stefan,<div><br></div><d=
iv>The issue is we never tested this device with iPXE, so according to Murp=
hy&#39;s law it cannot work :).</div>


<div>We&#39;ll take a look...</div><span><font color=3D"#888888"><div class=
=3D"gmail_extra">
<br></div></font></span><div class=3D"gmail_extra"><span><font color=3D"#88=
8888">Dmitry.</font></span><div><div><br><br><div class=3D"gmail_quote">On =
Mon, Mar 25, 2013 at 2:26 PM, Stefan Hajnoczi <span dir=3D"ltr">&lt;<a href=
=3D"mailto:stefanha@gmail.com" target=3D"_blank">stefanha@gmail.com</a>&gt;=
</span> wrote:<br>



<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Hi Dmitry,<br>
QEMU vmxnet3 produces the following warning with iPXE<br>
(77f64b11f764e721f4f8704b7b90317e52d85fc3):<br>
<br>
$ cd ~/ipxe/src<br>
$ make bin/vmxnet3.rom<br>
$ qemu-system-x86_64 -netdev user,id=3Dnetdev0 -device<br>
vmxnet3,netdev=3Dnetdev0,romfile=3Dbin/vmxnet3.rom<br>
[vmxnet3][WR][vmxnet3_peer_has_vnet_hdr]: Peer has no virtio<br>
extension. Task offloads will be emulated.<br>
[vmxnet3][WR][vmxnet3_get_command_status]: Received request for<br>
unknown command: cafe0002<br>
<br>
The warning about virtio extensions is expected since I chose slirp network=
ing.<br>
<br>
iPXE does not show the NIC (&#39;ifstat&#39; command). =A0I guess the drive=
r<br>
gave up during initialization:<br>
<br>
<a href=3D"https://git.ipxe.org/ipxe.git/blob/HEAD:/src/drivers/net/vmxnet3=
.c#l613" target=3D"_blank">https://git.ipxe.org/ipxe.git/blob/HEAD:/src/dri=
vers/net/vmxnet3.c#l613</a><br>
<br>
Any ideas?<br>
<span><font color=3D"#888888"><br>
Stefan<br>
</font></span><br>
PS: I discovered this when testing net patches for the pull request I<br>
just sent out. =A0It&#39;s not a blocker, so vmxnet3 will finally be in<br>
qemu.git/master very soon!<br>
</blockquote></div><br></div></div></div></div>
</blockquote></div><br></div></div>

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