On Tue, Feb 4, 2025 at 6:06 PM Jakub Kicinski <kuba@xxxxxxxxxx> wrote: > > On Tue, 4 Feb 2025 11:41:09 -0800 Stanislav Fomichev wrote: > > > > Don't we need some way for the device to opt-in (or opt-out) and avoid > > > > such issues? > > > > > > > > > > Yeah, I think likely the driver needs to declare support (i.e. it's > > > not using dma-mapping API with dma-buf addresses). > > > > netif_skb_features/ndo_features_check seems like a good fit? > > validate_xmit_skb() I was thinking I'd check dev->features during the dmabuf tx binding and check the binding completely if the feature is not supported. I'm guessing another check in validate_xmit_skb() is needed anyway for cases such as forwarding at what not? -- Thanks, Mina
