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Date: Fri, 8 May 2020 09:59:29 +0800 From: Jason Wang <jasowang@...hat.com> To: "Michael S. Tsirkin" <mst@...hat.com> Cc: Jesper Dangaard Brouer <brouer@...hat.com>, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, bpf@...r.kernel.org, "Jubran, Samih" <sameehj@...zon.com> Subject: Re: [PATCH net-next 1/2] virtio-net: don't reserve space for vnet header for XDP On 2020/5/6 下午5:46, Michael S. Tsirkin wrote: >>> There >>> are a lot of unanswered questions on how this will be implemented. >>> Thus, I cannot layout how we are going to leverage this info yet, but >>> your patch are killing this info, which IHMO is going in the wrong >>> direction. >> I can copy vnet header ahead of data_hard_start, does it work for you? >> >> Thanks > That's likely to be somewhat expensive. Any better approach? Note that it's not the issue that is introduced in this patch. Anyhow the header adjustment may just overwrite the vnet header even without this patch. Thanks
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