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[Bug 638955] Re: [Qemu-devel] [PATCH] e1000: Pad short frames to minimum
From: |
Anthony Liguori |
Subject: |
[Bug 638955] Re: [Qemu-devel] [PATCH] e1000: Pad short frames to minimum size (60 bytes) |
Date: |
Mon, 20 Sep 2010 20:57:19 -0000 |
On 09/20/2010 03:44 PM, Michael S. Tsirkin wrote:
>>> From f77c3143f3fbefdfa2f0cc873c2665b5aa78e8c9 Mon Sep 17 00:00:00 2001
>>> From: Anthony Liguori<address@hidden>
>>> Date: Mon, 20 Sep 2010 15:29:31 -0500
>>> Subject: [PATCH] tap: make sure packets are at least 40 bytes long
>>>
>>> This is required by ethernet drivers but not enforced in the Linux tap code
>>> so
>>> we need to fix it up ourselves.
>>>
>>
>> This enforces ethernet semantics on the internal links (which is probably
>> not good),
>>
> Plus plus ungood.
> When we do add e.g. ipoib support, we'll have to go and hunt these bugs down
> again.
> Also will make it impossible to implement any devices that pass in guest
> buffers
> without FCS and padding.
>
That's actually a good point which strongly is in favor of making the
devices do the padding themselves.
Regards,
Anthony Liguori
--
emulated netcards don't work with recent sunos kernel
https://bugs.launchpad.net/bugs/638955
You received this bug notification because you are a member of qemu-
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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 192.168.99.9/24 dev oi0;
regards by daniel
- [Qemu-devel] [PATCH v2 00/19] Monitor: split HMP and QMP dispatch tables, Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 01/19] Monitor: Introduce search_dispatch_table(), Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 02/19] QMP: handle_qmp_command(): Move 'cmd' sanity check, Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 03/19] QMP: Don't use do_info(), Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 04/19] Monitor: Drop QMP bits from do_info(), Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 05/19] Monitor: Drop is_async_return(), Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 06/19] Monitor: Convert do_info() back to HMP, Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 07/19] Monitor: Introduce the qmp-commands.hx file, Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 09/19] QMP: Introduce command dispatch table, Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 08/19] QMP: Introduce qmp_find_cmd(), Luiz Capitulino, 2010/09/30
- [Qemu-devel] [PATCH 10/19] QMP: Introduce query commands dispatch table, Luiz Capitulino, 2010/09/30