Messages in this thread | | | From | Toke Høiland-Jørgensen <> | Subject | Re: [PATCH bpf-next v3 1/3] xsk: Support UMEM chunk_size > PAGE_SIZE | Date | Tue, 18 Apr 2023 12:16:58 +0200 |
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Kal Cutter Conley <kal.conley@dectris.com> writes:
>> In addition, presumably when using this mode, the other XDP actions >> (XDP_PASS, XDP_REDIRECT to other targets) would stop working unless we >> add special handling for that in the kernel? We'll definitely need to >> handle that somehow... > > I am not familiar with all the details here. Do you know a reason why > these cases would stop working / why special handling would be needed? > For example, if I have a UMEM that uses hugepages and XDP_PASS is > returned, then the data is just copied into an SKB right? SKBs can > also be created directly from hugepages AFAIK. So I don't understand > what the issue would be. Can someone explain this concern?
Well, I was asking :) It may well be that the SKB path just works; did you test this? Pretty sure XDP_REDIRECT to another device won't, though?
-Toke
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