Re: [PATCH bpf-next v3 1/3] xsk: Support UMEM chunk_size > PAGE_SIZE

From: Toke Høiland-Jørgensen
Date: Thu Apr 06 2023 - 14:39:01 EST


Kal Conley <kal.conley@xxxxxxxxxxx> writes:

> Add core AF_XDP support for chunk sizes larger than PAGE_SIZE. This
> enables sending/receiving jumbo ethernet frames up to the theoretical
> maxiumum of 64 KiB. For chunk sizes > PAGE_SIZE, the UMEM is required
> to consist of HugeTLB VMAs (and be hugepage aligned). Initially, only
> SKB mode is usable pending future driver work.

Hmm, interesting. So how does this interact with XDP multibuf?

-Toke