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    SubjectRe: [PATCH V5 2/6 net-next] netdevice.h: Add zero-copy flag in netdevice
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    On Tue, 2011-05-17 at 09:21 +0300, Michael S. Tsirkin wrote:
    > Problem is, in your patch there are a set of restrictions on what the
    > device can do with the skb that we need to enforce somehow.
    > Also, how do we know it's a 'real NIC' and not a software device?

    I checked macvtap newlink, it doesn't seem to block software device.

    So we need to work on the wider feature bit first.

    Shirley



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