On Wed, 2007-05-09 at 22:00 +1000, Herbert Xu wrote:
> Hi Rusty:
>
> On Wed, May 09, 2007 at 09:55:25PM +1000, Rusty Russell wrote:
> >
> > NO_CSUM because it really doesn't need a checksum. The
> > LGUEST_NET_F_NOCSUM is only set for local inter-guest networking. If
> > some guest were to route the packets outside the machine, this would be
> > an issue, though ("don't do that").
>
> While I can see that this is good in keeping things simple, I think
> it's something that you want to be able to support since the user
> may wish to setup a guest as a firewall appliance which would involve
> passing packets from another guest to the outside world.
Indeed, you understand the tradeoff. The example launcher could have an
option not to set the LGUEST_NET_F_NOCSUM in this case.
That said, one significant purpose of lguest is to serve as an example
of how to do things. So if you feel really strongly that there's a
Right Way, we could look at the patch...
Thanks,
Rusty.
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