linux-kernel - Re: [PATCH net-next v5 00/24][pull request] Add support for providers with large rx buffer

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Message-ID: <2ebc6019-d8b6-4d6f-981e-a61819b67e19@gmail.com>
Date: Tue, 14 Oct 2025 14:03:07 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: netdev@...r.kernel.org, io-uring@...r.kernel.org
Cc: Michael Chan <michael.chan@...adcom.com>,
 Pavan Chebbi <pavan.chebbi@...adcom.com>, Andrew Lunn
 <andrew+netdev@...n.ch>, "David S . Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>,
 Stanislav Fomichev <sdf@...ichev.me>, Simon Horman <horms@...nel.org>,
 Ilias Apalodimas <ilias.apalodimas@...aro.org>,
 Mina Almasry <almasrymina@...gle.com>, Willem de Bruijn
 <willemb@...gle.com>, Dragos Tatulea <dtatulea@...dia.com>,
 Saeed Mahameed <saeedm@...dia.com>, Tariq Toukan <tariqt@...dia.com>,
 Mark Bloch <mbloch@...dia.com>, David Wei <dw@...idwei.uk>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v5 00/24][pull request] Add support for providers
 with large rx buffer

Oops, should be 0/6 in the subject.

On 10/14/25 14:01, Pavel Begunkov wrote:
> Many modern network cards support configurable rx buffer lengths larger
> than typically used PAGE_SIZE. When paired with hw-gro larger rx buffer
> sizes can drastically reduce the number of buffers traversing the stack
> and save a lot of processing time. Another benefit for memory providers
> like zcrx is that the userspace will be getting larger contiguous chunks
> as well.
> 
> This series adds net infrastructure for memory providers configuring
> the size and implements it for bnxt. It'll be used by io_uring/zcrx,
> which is intentionally separated to simplify merging. You can find
> a branch that includes zcrx changes at [1] and an example liburing
> program at [3].

-- 
Pavel Begunkov