RE: [Xen-devel] network idea

["James Harper" <JamesH@xxxxxxxxxxxxxxxx>]

I'm just looking at this now. I think that to do this I need to comment
out anything bridge related in
linux-2.4.26-xen-sparse/arch/xen/drivers/netif/backend/interface.c
so that xen doesn't do any bridging stuff, and then hook into xend so
that it can call my scripts when the netif_fe_interface_status_changed
events occur. It's the second bit I'm having trouble with... where
should that hook into? I can see where xend might sends such events...
maybe it doesn't have visibility to receiving them???

By taking the bridge stuff out of xen and putting it all in userland, it
means that we can route packets or bridge interfaces or completely
isolate them if desired. My reasons for doing it is that my server has 3
network cards, but any domain is only going to connect to 1 or 2 of
them, but not necessarily the same 1 or 2 as other domains.

Any suggestions?

Thanks

James

> -----Original Message-----
> From: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> admin@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of James Harper
> Sent: Tuesday, 22 June 2004 20:43
> To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] network idea
> 
> In order to make xend a bit more flexible about what it does with
> networking, would it be possible to have it just call out scripts like
> pppd (on debian at least) does.
> 
> The idea would be /etc/xend/netup.d and /etc/xend/netdown.d
directories
> in which scripts are called with 'runparts' when a network interface
on
> a domain starts or stops (or similar hooks). To be useful the scripts
> would need at least the following args passed in:
> vmid - id of vm
> index - network interface no
> netif - eg vif1.3
> name - name of vm
> 
> I know very little about python, but a fair bit about linux systems
> programming in general and so would be happy to tackle this myself
> unless it's already in progress or is a stupid idea...
> 
> Thanks
> 
> James
> 
> 
> 
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