On Tue, Apr 18, 2023 at 2:58 AM Jakub Kicinski <kuba@xxxxxxxxxx> wrote: > > On Mon, 17 Apr 2023 11:56:10 -0700 Jakub Kicinski wrote: > > > May misunderstand, here the "dma_ops" is not the "dma_ops" of DMA API. > > > > > > I mean the callbacks for xsk to do dma. > > > > > > Maybe, I should rename it in the next version. > > > > Would you mind explaining this a bit more to folks like me who are not > > familiar with VirtIO? DMA API is supposed to hide the DMA mapping > > details from the stack, why is it not sufficient here. The reason is that legacy virtio device don't use DMA(vring_use_dma_api()). The AF_XDP assumes DMA for netdev doesn't work in this case. We need a way to make it work. Thanks > > Umm.. also it'd help to post the user of the API in the same series. > I only see the XSK changes, maybe if the virtio changes were in > the same series I could answer my own question. >
