netdev - Re: [patch net-next 0/6] selftests: virtio_net: introduce initial testing infrastructure

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Zh5Kn5OnDdzgB6Rm@nanopsycho>
Date: Tue, 16 Apr 2024 11:53:35 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, pabeni@...hat.com, davem@...emloft.net,
	edumazet@...gle.com, parav@...dia.com, mst@...hat.com,
	jasowang@...hat.com, xuanzhuo@...ux.alibaba.com, shuah@...nel.org,
	petrm@...dia.com, liuhangbin@...il.com, vladimir.oltean@....com,
	bpoirier@...dia.com, idosch@...dia.com,
	virtualization@...ts.linux.dev
Subject: Re: [patch net-next 0/6] selftests: virtio_net: introduce initial
 testing infrastructure

Mon, Apr 15, 2024 at 07:26:59PM CEST, kuba@...nel.org wrote:
>On Sat, 13 Apr 2024 15:23:53 +0200 Jiri Pirko wrote:
>> That is a goal. Currently I do it with:
>> vng --qemu-opts="-nic tap,id=nd0,ifname=xtap0,model=virtio-net-pci,script=no,downscript=no,mac=52:54:00:12:34:57 -nic tap,id=nd1,ifname=xtap1,model=virtio-net-pci,script=no,downscript=no,mac=52:54:00:12:34:58"
>> 
>> and setting loop manually with tc-matchall-mirred
>> 
>> Implementing virtio loop instantiation in vng is on the todo list for
>> this.
>
>Just to be clear - I think the loop configuration is better off outside
>vng. It may need SUID and such. We just need to make vng spawn the two
>interfaces with a less verbose syntax. --network-count 2 ?

Well, you ask vng for network device by:
--net=user/bridge

Currently putting the option multiple times is ignored, but I don't see
why that can't work.

Regarding the loop configuration, I would like to make this as
convenient for the user as possible, I was thinking about something like
--net=loop which would create the tc-based loop.

How to do this without root, I'm not sure. Perhaps something similar
like qemu-bridge-helper could be used.