[dpdk-stable] [PATCH 2/3] net/virtio: rationalize queue flushing
Olivier Matz
olivier.matz at 6wind.com
Thu Jan 18 14:55:44 CET 2018
On Thu, Jan 18, 2018 at 09:26:09PM +0800, Yuanhan Liu wrote:
> Hi Oliver,
>
> On Thu, Jan 18, 2018 at 10:07:32AM +0100, Olivier Matz wrote:
> > Rationalize the function virtio_dev_free_mbufs():
> >
> > - skip NULL vqs instead of crashing: this is required for the
> > next commit
> > - use the same kind of loop than in virtio_free_queues()
> > - also flush mbufs from the control queue (this is useless yet)
>
> Could we just do "nr_vq = virtio_get_nr_vq(hw) - 1" with a comment that
> CQ is excluded, for skipping the CQ?
Is "nr_vq = virtio_get_nr_vq(hw) - 1" always valid?
Shouldn't we do this check?
if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
Instead, I suggest this:
queue_type = virtio_get_queue_type(hw, i);
if (queue_type == VTNET_RQ)
type = "rxq";
else if (queue_type == VTNET_TQ)
type = "txq";
else
- type = "cq";
+ continue;
> > - factorize common code between rxq, txq, cq
> >
> > Cc: stable at dpdk.org
>
> Could you split the patch two 2:
>
> - one for fixing the crash (skip the NULL vqs). We only need this one
> for stable release.
> - another one for the refactoring
Yes, do you want them all in the same patchset?
Thank you for the comments
Olivier
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