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([2620:10d:c092:600::1:7ec0]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-426ce5cf790sm22831336f8f.28.2025.10.14.06.01.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Oct 2025 06:01:52 -0700 (PDT) Message-ID: <2ebc6019-d8b6-4d6f-981e-a61819b67e19@gmail.com> Date: Tue, 14 Oct 2025 14:03:07 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v5 00/24][pull request] Add support for providers with large rx buffer To: netdev@vger.kernel.org, io-uring@vger.kernel.org Cc: Michael Chan , Pavan Chebbi , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Simon Horman , Ilias Apalodimas , Mina Almasry , Willem de Bruijn , Dragos Tatulea , Saeed Mahameed , Tariq Toukan , Mark Bloch , David Wei , linux-kernel@vger.kernel.org References: Content-Language: en-US From: Pavel Begunkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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