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

From: Alvaro Karsz
Date: Mon Apr 17 2023 - 02:38:52 EST


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

> 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.