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Re: [Qemu-devel] virtio-rng
From: |
Ian Molton |
Subject: |
Re: [Qemu-devel] virtio-rng |
Date: |
Mon, 16 Nov 2009 12:28:52 +0000 |
User-agent: |
Mozilla-Thunderbird 2.0.0.22 (X11/20090707) |
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Gerd Hoffmann wrote:
> Hi,
Hi!
Thanks for your reply - I should have posted to say I'd partially solved
this. I have a question though,
> Use a chardev property (look at serial.c, "isa-serial" device).
>
> Then you'll configure it on the qemu command line like this:
>
> -chardev $backend,id=some-name-here,more-chardev-parameters
> -device virtio-rng,chardev=some-name-here
I've done something similar (below)
My commandline looks like:
- -virtiorng dev=/dev/foo,rate=1234
I added some properties to my driver which are obviously then filled in
from the options code, and I do my init like this:
VirtIODevice *virtio_rng_init(DeviceState *dev, RNGConf *rngdev)
{
VirtIORng *s;
s = (VirtIORng *)virtio_common_init("virtio-rng",
VIRTIO_ID_RNG,
0, sizeof(VirtIORng));
if (!s)
return NULL;
s->vdev.get_features = virtio_rng_get_features;
s->vq = virtio_add_queue(&s->vdev, 128, virtio_rng_handle);
s->chr = qemu_chr_open("vrngdev", rngdev->device, NULL);
...
return &s->vdev;
}
Is this 'not the right way' ? I think the commandline looks much simpler
this way.
OTOH, I can see that this might help with my next problem, which is that
I want to write EGD support for virtio-rng, so I'm guessing my
commandline would (in your scheme) need to be something like:
-tcpsocketthing $addr.of.egd.server,id=some-name-here,
more-egd-client-options
-device virtio-rng,tcpsocketthing=some-name-here,rate=$limit
I guess the idea here is to seperate the host related config from the
guest OS setup ?
This doesnt, however, get around my problem that the -device option
doesnt know how to parse OPT_SIZE types, though. (I'd like to be able to
specify 'rate' in B/s or KB/s (or even kbits/sec, more appropriately))
- -Ian
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- [Qemu-devel] virtio-rng, Ian Molton, 2009/11/11
- Re: [Qemu-devel] virtio-rng, Paul Brook, 2009/11/11
- Re: [Qemu-devel] virtio-rng, Gerd Hoffmann, 2009/11/16
- Re: [Qemu-devel] virtio-rng,
Ian Molton <=
- Re: [Qemu-devel] virtio-rng, Gerd Hoffmann, 2009/11/16
- Re: [Qemu-devel] virtio-rng, Ian Molton, 2009/11/16
- Re: [Qemu-devel] virtio-rng, Jamie Lokier, 2009/11/16
- Re: [Qemu-devel] virtio-rng, Ian Molton, 2009/11/16
- Re: [Qemu-devel] virtio-rng, Jamie Lokier, 2009/11/16
- Re: [Qemu-devel] virtio-rng, Ian Molton, 2009/11/17
- Re: [Qemu-devel] virtio-rng, Amit Shah, 2009/11/17
- Message not available
- Message not available
- Message not available
- Message not available
- Re: [Qemu-devel] virtio-rng, Ian Molton, 2009/11/17
- Re: [Qemu-devel] virtio-rng, Amit Shah, 2009/11/17