Re: [Qemu-devel] Virtio-net cli parameters

[Stefan Hajnoczi <stefanha@gmail.com>]

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On Mon, Oct 10, 2016 at 03:00:20PM +0200, Pradeep Kiruvale wrote:
> On 10 October 2016 at 11:26, Pradeep Kiruvale <pradeepkiruvale@gmail.com>
> wrote:
> 
> > Hi Stefan,
> >
> > Thanks for the reply.
> >
> > On 30 September 2016 at 15:49, Stefan Hajnoczi <stefanha@gmail.com> wrote:
> >
> >> On Thu, Sep 29, 2016 at 04:11:27PM +0200, Pradeep Kiruvale wrote:
> >> > Hi Stefan,
> >> >
> >> > On 28 September 2016 at 10:29, Stefan Hajnoczi <stefanha@gmail.com>
> >> wrote:
> >> >
> >> > > On Mon, Sep 26, 2016 at 05:41:55PM +0200, Pradeep Kiruvale wrote:
> >> > > > I want to add couple of new cli options for the virtio-net driver
> >> and use
> >> > > > them inside the
> >> > > > virtio-net driver to throttle the packets. I did go through the
> >> code and
> >> > > > did single stepping
> >> > > > using the gdb, but still could not find the place where the
> >> virtio-net
> >> > > > parameters are getting
> >> > > > parsed and populated into the virtio-net structures.
> >> > > > Could some one please guide/suggest where to look into, in qemu code
> >> > > base?
> >> > >
> >> > > Take a look at virtio_net_properties[] in hw/net/virtio-net.c.
> >> > >
> >> >
> >> > These variables/properties are static variables. What I am looking
> >> about is
> >> > how can I pass a cli option from qemu into virtio-net driver.
> >>
> >> When you say "virtio-net driver" I think you mean the virtio-net
> >> device emulation code in QEMU?
> >>
> > Yes, which the virtio-net driver uses to do the network I/O.
> >
> >>
> >> These *are* the properties that can be set from the QEMU command-line.
> >> For example:
> >>
> >>   -device virtio-net-pci,csum=off
> >>
> > This is the clue, I was looking for. I will see how to proceed from here
> > on.
> >
> But when I have a cli option like below, how can pass above options?
> -net nic,macaddr=52:54:00:37:4d:10,model=virtio

Please look at "Network Devices" in docs/qdev-device-use.txt for
information on modern -netdev/-device syntax.

The old -net syntax should be replaced with the more powerful
-netdev/-device syntax.

Stefan

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