Re: [PATCH v3] virtio-net: Fix VLAN filter table reset timing

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Tested pass this patch with virtio-net regression tests, everything works well.

Tested-by: Lei Yang <leiyang@xxxxxxxxxx>

On Sat, Aug 2, 2025 at 5:43 PM Akihiko Odaki
<odaki@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> On 2025/08/02 16:26, Michael Tokarev wrote:
> > On 27.07.2025 09:22, Akihiko Odaki wrote:
> > ...
> >> @@ -3942,6 +3943,7 @@ static void
> >> virtio_net_device_realize(DeviceState *dev, Error **errp)
> >>       n->mac_table.macs = g_malloc0(MAC_TABLE_ENTRIES * ETH_ALEN);
> >>       n->vlans = g_malloc0(MAX_VLAN >> 3);
> >> +    memset(n->vlans, 0xff, MAX_VLAN >> 3);
> >
> > A nitpick: we don't need to init this memory with 0 before
> > initing it with 0xff.
> >
> > But looking at this, why can't we embed n->vlans directly into
> > this structure, something like the attached patch?
>
> VMState also needs a change: VMSTATE_BUFFER_POINTER_UNSAFE() should be
> replaced with plain VMSTATE_BUFFER(). Actually this is the only user of
> VMSTATE_BUFFER_POINTER_UNSAFE().
>
> I appreciate if you submit the patch with this VMState change and patch
> message.
>
> >
> > This, and maybe a few other fields like it?
>
> There is another candidate: n->mac_table.macs
>
> But it is not straightforward to embed this array because it uses
> VMSTATE_VBUFFER_MULTIPLY().
>
> Regards,
> Akihiko Odaki
>






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