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Message-ID: <87sfdckgaa.fsf@toke.dk> Date: Thu, 06 Apr 2023 20:38:05 +0200 From: Toke Høiland-Jørgensen <toke@...hat.com> To: Kal Conley <kal.conley@...tris.com>, Björn Töpel <bjorn@...nel.org>, Magnus Karlsson <magnus.karlsson@...el.com>, Maciej Fijalkowski <maciej.fijalkowski@...el.com>, Jonathan Lemon <jonathan.lemon@...il.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Jonathan Corbet <corbet@....net>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com> Cc: Kal Conley <kal.conley@...tris.com>, netdev@...r.kernel.org, bpf@...r.kernel.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH bpf-next v3 1/3] xsk: Support UMEM chunk_size > PAGE_SIZE Kal Conley <kal.conley@...tris.com> 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
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