From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f53.google.com (mail-ed1-f53.google.com [209.85.208.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F3C06286D73 for ; Thu, 25 Sep 2025 09:55:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758794106; cv=none; b=qvv6WRBiHP8h+LWdgb6I0JJA0qHM5R1fjyRVFUEeTQvlRlNePVQ+Ev0iCbCIlx0GgbuHyrrCquKVksszCHsyh6es2ctwnA/IKtximXPzwTT/Lqb2JFiPWoodUt6UF7OFsYkDbMPV1O5XjnOZ7nSGbmhk+pLvF4YrDgmbzMsEh78= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758794106; c=relaxed/simple; bh=gYz7iV05DSw4pVhAWjhV3Q0zzhj5V+j80F263wxEhK0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tth+8QOm4Q1g2dwS5puUq/fbHoo2qNzixMakRDBaJ3oI6TNfayLY9seSefIASxzCdKR8wyeYX4G+XXzaUJuV9TXqNJunxDQRIf+A98u8J3wPt8VDSm+GPDr9pd5+6AAr7Pv27wx1uQU+5vkHXLJ4WY4mHCh9xosGAeWcGK1uiG0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=CvrQvBfR; arc=none smtp.client-ip=209.85.208.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CvrQvBfR" Received: by mail-ed1-f53.google.com with SMTP id 4fb4d7f45d1cf-633b4861b79so91522a12.1 for ; Thu, 25 Sep 2025 02:55:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1758794103; x=1759398903; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=D6dvovCLm5rvYDjRuqlZ0v6O+tZDtYwybR22eRO2w/w=; b=CvrQvBfR60pjYrt0JNov/JUzBIu7LqSKR/md3Vk/16C2BVFDFidGXudncHq/2Ns5d1 iQioOLx9l0wtXcnHvsuBg8DIiHKBFus7lnQhgdGTZZo3ibU3LNyoOI60TEJoONJ2V+3/ z9btmhvZnnbvl3TYlEKOP7BE9e2juxFDHABQe9IJ/KACOsO22CCr2zx4ho0Q0WNSqjqw QoC2/NUuoftjd9OiJbTJxykezYo2T+MQDH9EyMtt1tnNT9PAh64bqeA3QQ8c8zGu6tCm NcyC9Jli7v+vPVunCHe6KAOr3QHyjhfsGtQRcPoOm83Kc3LqmcGPcot4rzpInR237yYM BChQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758794103; x=1759398903; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=D6dvovCLm5rvYDjRuqlZ0v6O+tZDtYwybR22eRO2w/w=; b=ibXeZq9X6+UocqA0oBoc1iAuRp9BCMreJiw1N1Ixy+3WQZitAFRp6FKxsU32or2Obx I1CC8N+wIhmjiKd727fxDHHZgRe6bEyYz28RucOhse/yaMgb4SQh42ac/K/VVqBTEDhu CblHTT7S35RJHgoeZefm3uETs0WTCW/rK2NZSln3ZAhTfzpzdT7AuY4962txH4uT1GBJ PsLORVs7HPtrydOuF5xudGe3ZmDVP3DcAXU0AKgGO/aZCDlJq4OpFEPO7sSdGAAGykTr HFCxTWpcu2aZsiAiiEB7lQLFePO4IXZbIzqGEBXaMxfYHdycMYO+Gr+N9RHoCPaHYWYa b89w== X-Forwarded-Encrypted: i=1; AJvYcCVz9HEZh2w2vWqooLxuXIibVrd62GDzH+GXJN00HPzviDOjTJuzKREMJcrS0zxuxTYhe2s=@vger.kernel.org X-Gm-Message-State: AOJu0YxLqeurOeOLyS/v8YmL52rvr6lu5bjj4Ix7eBbECSkhPZClVT/S iN4bJy9AQkhJdbj2CpJuSJQrbySFG6pJv2DhlHyawNPD2n5IDZXnaG2L X-Gm-Gg: ASbGncu0YjGWcEadGrpNm8AMop+JdnZ+ccy/8wJ7Vfy+qUi5arcsWVhKeI1sVCteetn 6AlHOvXJu4m3BPRa1fqD2VpOpqxzb/LpFDyFkM9g1aQiJKeA6hWxWkZvxcPRyoB45mmm5Eq7yfO gSX/IssdETSesESWPjTlKvO9bG1pSbVnIgyJcjN6B/y5VoECEUTJqsNqYnSUVgG1vIj+YE1kF55 8Xbn6sTWnTFsI+BBU50Op5qQ7hkRENJ7PTlbAqsqR363UaQ+pIYyA1mVZIIjljns9fFr31XI9CU PURe+xxvENTDZM/TDB07zKwQOVG+W39xuBEjSGzh2o09Ep/eD0unajaWPPGKhjOtBWHd4addd0m RtaYLtNAsi64iK2X+4Q5CNreSNeMNq7yWLCOxQ6GMIm8= X-Google-Smtp-Source: AGHT+IFTuGy+/aqTWUBxQswnc2Pa/G9YhWnP1H9BAmagYPQwBxO49Up+XtOmxAKd1meYws/OfWOHBA== X-Received: by 2002:a05:6402:239a:b0:634:9e76:9997 with SMTP id 4fb4d7f45d1cf-6349faa4975mr860990a12.7.1758794103190; Thu, 25 Sep 2025 02:55:03 -0700 (PDT) Received: from [192.168.1.105] ([165.50.112.244]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-634a3ae31cfsm919842a12.33.2025.09.25.02.55.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Sep 2025 02:55:02 -0700 (PDT) Message-ID: <0cddb596-a70b-48d4-9d8e-c6cb76abd9d2@gmail.com> Date: Thu, 25 Sep 2025 11:54:59 +0100 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC 0/4] Add XDP RX queue index metadata via kfuncs To: Jakub Sitnicki Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, donald.hunter@gmail.com, andrew+netdev@lunn.ch, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, matttbe@kernel.org, chuck.lever@oracle.com, jdamato@fastly.com, skhawaja@google.com, dw@davidwei.uk, mkarsten@uwaterloo.ca, yoong.siang.song@intel.com, david.hunter.linux@gmail.com, skhan@linuxfoundation.org, horms@kernel.org, sdf@fomichev.me, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org References: <20250923210026.3870-1-mehdi.benhadjkhelifa@gmail.com> <87h5wq50l0.fsf@cloudflare.com> Content-Language: en-US From: Mehdi Ben Hadj Khelifa In-Reply-To: <87h5wq50l0.fsf@cloudflare.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 9/25/25 10:43 AM, Jakub Sitnicki wrote: > On Tue, Sep 23, 2025 at 10:00 PM +01, Mehdi Ben Hadj Khelifa wrote: >> This patch series is intended to make a base for setting >> queue_index in the xdp_rxq_info struct in bpf/cpumap.c to >> the right index. Although that part I still didn't figure >> out yet,I m searching for my guidance to do that as well >> as for the correctness of the patches in this series. > > What is the use case/movtivation behind this work? The goal of the work is to have xdp programs have the correct packet RX queue index after being redirected through cpumap because currently the queue_index gets unset or more accurately set to 0 as a default in xdp_rxq_info. This is my current understanding.I still have to know how I can propogate that HW hint from the NICs to the function where I need it. Regards, Mehdi