Re: [RFC v2] virtio: support packed ring

Tiwei Bie
2018-04-10T03:21:34Z

On Tue, Apr 10, 2018 at 10:55:25AM +0800, Jason Wang wrote:
> On 2018年04月01日 22:12, Tiwei Bie wrote:
> > Hello everyone,
> >
> > This RFC implements packed ring support for virtio driver.
> >
> > The code was tested with DPDK vhost (testpmd/vhost-PMD) implemented
> > by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html
> > Minor changes are needed for the vhost code, e.g. to kick the guest.
> >
> > TODO:
> > - Refinements and bug fixes;
> > - Split into small patches;
> > - Test indirect descriptor support;
> > - Test/fix event suppression support;
> > - Test devices other than net;
> >
> > RFC v1 -> RFC v2:
> > - Add indirect descriptor support - compile test only;
> > - Add event suppression supprt - compile test only;
> > - Move vring_packed_init() out of uapi (Jason, MST);
> > - Merge two loops into one in virtqueue_add_packed() (Jason);
> > - Split vring_unmap_one() for packed ring and split ring (Jason);
> > - Avoid using '%' operator (Jason);
> > - Rename free_head -> next_avail_idx (Jason);
> > - Add comments for virtio_wmb() in virtqueue_add_packed() (Jason);
> > - Some other refinements and bug fixes;
> >
> > Thanks!
>
> Will try to review this later.
>
> But it would be better if you can split it (more than 1000 lines is too big
> to be reviewed easily). E.g you can at least split it into three patches,
> new structures, datapath, and event suppression.
>

No problem! It's on my TODO list. I'll get it done in the next version.

Thanks!