Re: [PATCH v9 bpf-next 00/14] mvneta: introduce XDP multi-buffer support

On 6/22/21 5:18 PM, John Fastabend wrote:

At this point I don't think we can have a partial implementation. At
the moment we have packet capture applications and protocol parsers
running in production. If we allow this to go in staged we are going
to break those applications that make the fundamental assumption they
have access to all the data in the packet.

What about cases like netgpu where headers are accessible but data is
not (e.g., gpu memory)? If the API indicates limited buffer access, is
that sufficient?