Re: [PATCH] net: update netdev stream/dgram man page

[Laurent Vivier <lvivier@redhat.com>]

On 02/07/2024 10:08, Marc-André Lureau wrote:
> Hi
> 
> On Wed, Jun 26, 2024 at 7:53 PM Laurent Vivier <lvivier@redhat.com 
> <mailto:lvivier@redhat.com>> wrote:
> 
>     Add the description of "-netdev stream" and "-netdev dgram" in the QEMU
>     manpage.
> 
>     Add some examples on how to use them, including a way to use
>     "-netdev stream" and "passt" in place of "-netdev user".
>     ("passt" is a non privileged translation proxy between layer-2,
>     like "-netdev stream", and layer-4 on host, like TCP, UDP,
>     ICMP/ICMPv6 echo)
> 
> 
> Was there any plan to have passt fallback (default / "-net passt") when slirp is disabled 
> ? spawning the process with -F fd etc. That would help migrating away from slirp for some 
> systems.

Yes, I'm planning to add a "-netdev passt" that will start passt and connect it to a 
stream socket to QEMU. Perhaps at some point we can have a "-netdev slirp" and "-netdev 
user" will us by default passt?

I'm also working on a vhost-user interface for passt that will also improve performance of 
user mode networking with QEMU.

Thanks,
Laurent