[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] is it just me or is ne2k broken in qemu?
From: |
Alex Williamson |
Subject: |
Re: [Qemu-devel] is it just me or is ne2k broken in qemu? |
Date: |
Fri, 15 Apr 2011 08:17:21 -0600 |
On Thu, 2011-04-14 at 12:31 +0400, Michael Tokarev wrote:
> I performed several tests of various emulated NICs
> booting with iPXE, and discovered that ne2k_pci (*)
> emulated device does not quite work, for quite some
> time already, at least with linux guests.
>
> The NIC works for a while, but after a few packets,
> or a few 1000s of packets, it stalls. In tcpdump
> on the host I see many ARP requests coming from the
> guest and each has corresponding ARP reply, but
> nothing is actually reaching the guest.
>
> This behavour is consistent since qemu-kvm 0.12,
> and is demonstrated by guest kernel 2.6.32 and
> 2.6.38, either 32 or 64bit.
>
> Anyone seen something similar?
For testing the iPXE ROMs I booted up each NIC, including ne2k_pci, to a
network loaded kernel (~4M) and installation initrd (~8M). I stopped
the test at the point where the installer kernel was able to
successfully DHCP with the boot NIC. ne2k_pci was definitely the
slowest of the cards at loading the images, but I didn't notice any
functionality issues. Maybe I didn't let it run long enough, but the
boot ROM seems ok with it.
Alex