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[Qemu-devel] Re: [Bug 638955] Re: emulated netcards don't work with rece

From: Stefan Hajnoczi
Subject: [Qemu-devel] Re: [Bug 638955] Re: emulated netcards don't work with recent sunos kernel
Date: Tue, 12 Oct 2010 14:40:55 -0000

On Sat, Oct 2, 2010 at 8:23 PM, daniel pecka <address@hidden> wrote:
> well, i did some more investigations and here come a results ..
> this patch http://patchwork.ozlabs.org/patch/65137/raw/ solves problem
> partially .. NICs are working with that but after a deeper look,
> connection is lost when the netstack is flooded with higher traffic ..

I haven't looked more into this but noticed an e1000 patch from
Anthony Perard which may improve the Solaris experience:


emulated netcards don't work with recent sunos kernel
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Status in QEMU: New

Bug description:
hi there,

i'm using qemu-kvm backend in version: # qemu-kvm -version
QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5), Copyright (c) 2003-2008 
Fabrice Bellard

and there are just *not working any of model=$type with combinations of recent 
sunos (solaris, openindiana, opensolaris, ..) ..

you can download for testing purposes iso from here: 
http://dlc-origin.openindiana.org/isos/147/ or from here: 
http://genunix.org/distributions/indiana/ << osol and oi are also bubuntu-like 
*live cds, so no need to bother with installing

behaviour is as follows:
e1000 - receiving doesn't work, transmitting works .. dladm (tool for handle 
ethers) shows that is all ok, correct mode is loaded up, it just seems like 
this driver works at 100% but ..

rtl8169|pcnet - works in 10Mbit mode with several other issues like high cpu 
utilization and so .. dladm is unable to recognize options for this kind of -nic

others - just don't work

.. i experienced this issue several times in past .. woraround was, that 
rtl8169 worked so-so .. with recent sunos kernel it doesn't.

it's easy to reproduce, this is why i'm not putting here more then launching 
script for my virtual machine:

# cat openindiana.sh
qemu-kvm -hda /home/kvm/openindiana/openindiana.img -m 2048 -localtime -cdrom 
/home/kvm/+images/oi-dev-147-x86.iso -boot d \
-vga std -vnc :9 -k en-us -monitor 
unix:/home/kvm/openindiana/instance,server,nowait \
-net nic,model=e1000,vlan=1 -net tap,ifname=oi0,script=no,vlan=1 &

sleep 2;
ip l set oi0 up;
ip a a dev oi0;

regards by daniel

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