Re: [PATCH net] virtio-net: reject small vring sizes

[Xuan Zhuo]

On Mon, 17 Apr 2023 06:38:43 +0000, Alvaro Karsz <alvaro.karsz@xxxxxxxxxxxxx> wrote:
> > Actually, I think that all you need to do is disable NETIF_F_SG,
> > and things will work, no?
>
> I think that this is not so simple, if I understand correctly, by disabling NETIF_F_SG we will never receive a chained skbs to transmit, but we still have more functionality to address, for example:
> * The TX timeouts.

Why tx timeout without frags?

> * Guest GSO/big MTU (without VIRTIO_NET_F_MRG_RXBUF?), we can't chain page size buffers anymore.


Or, we disable the GUEST_GSO, HOST_GSO......

Thanks.

>
> > Alvaro, can you try?
>
> It won't matter at the moment, we'll get TX timeout after the first tx packet, we need to address this part as well.