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

[Stefan Hajnoczi]

Please test this patch:
http://repo.or.cz/w/qemu/stefanha.git/commitdiff/c405d1b66e045bce1c53a30f9ad840c6f19eca57

QEMU loads checksum offload flags from every tx data descriptor.  When a
multi-descriptor packet is sent, Solaris will only mark the first
descriptor with checksum offload flags.  Therefore QEMU fails to perform
checksum offload resulting in corrupted packets that will be discarded
by the receiver.

I'll try to come up with a proper fix that can be submitted to QEMU.

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https://bugs.launchpad.net/bugs/638955

Title:
  emulated netcards don't work with recent sunos kernel

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 192.168.99.9/24 dev oi0;

  regards by daniel