From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) (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 E2CBC223DEC; Thu, 3 Jul 2025 15:41:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751557315; cv=none; b=MzvWcTq5PkkalC+Au0o7OMi2sOdfJTAIlOLlJbd1BI3SDKMbEGgkpTISsc9WZjl5PfNGod+Fybht4XYjVcP5PRm4hX83AtFBQrPoJSDd7Zl8ZV8n7050F+IzgWV5MUcPirMUfDjLU0Znj78lBiM8i34aXCKapshDokLwQj7Zl6o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751557315; c=relaxed/simple; bh=NkBIMm7TBqeJYMH6RPL+hi3KACmin4rFhLtSG64UvI8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=R94FRdBSFvsi/BdL0VAPDGrwEiUOMDIWTVPRMWlhFf7+lPWcEeXlIpVX0wpEiy90cx+VSfJGJe3jy7TGazWXhurHBcBqis9iiz/z4ol82jnyFZLgJ+OasZoPGwQkbcS6MGvWtWOVqa08Pi9NtYkAB8mlgw+8yZWxXyCaLgdIB9A= 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=lhjthhsD; arc=none smtp.client-ip=209.85.210.181 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="lhjthhsD" Received: by mail-pf1-f181.google.com with SMTP id d2e1a72fcca58-747c2cc3419so133017b3a.2; Thu, 03 Jul 2025 08:41:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1751557313; x=1752162113; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=fGkOYL8RQfSMzeM60XRGKVUUpz0QC6vboVSRHTQXPEs=; b=lhjthhsD4avGlx+IydK8L48d0GlAK/mCJzIqBZSHnzKKWnOPgMQ/xAgumUjcuLP2ap yon9DgG7pEzCa0z0dEin+TjW5gJ12MpLWOsXBoBadn0cIaHBiy0fr+v1cS1bvBxhXSgt YsaZZQgtQ7sPpAVvYj5YmzI3dyZQdYhhe5Tby5pLdR6kvJj8sfHghbSgn/thnb36/wEw O6Pi57rftqlwpMsfRveXtsCFnFploFbnEpneAj4QZS6dt3jR1NJJYbHkvku1AQKBY8OQ /TXsbbWlV0G3kSyn4vkrfMPxkIy7SwU1ulVogTUCkWOK+rskvgdVkbdOc62eZg4lDx/2 BZIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751557313; x=1752162113; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=fGkOYL8RQfSMzeM60XRGKVUUpz0QC6vboVSRHTQXPEs=; b=Ty7iamvnV7bfIOvSVJEnQLjKdOMqfpJmER+jbimFWTV9K9SHOziDKyYUdeyX3AcB5Y 6950vkiUPKjs89Sx2shDjqhPqZuW+2GBAWL+/+24BKYyGRkEyTYPQDO9nrL/6TV2MIXc s3MgEQih5TquOKSnPSN0vfSgdrRj/nosuRvNReAKlhJdol7K0rQnWnPGAWBsV0SHaYkQ mY9XuIdraEOBRwDMbT410M1H4VpygB8fkX0rxsZRosEexZ1VyAbPooviJkKlKKjIrjSe TL21uXF9zaeA44bKHotd6hOKK9HTrTlvSRVfUx/fI0MWGPCiS96zzcv8xNdIq4zTeBn/ jZ0w== X-Forwarded-Encrypted: i=1; AJvYcCUNYE/Tk4UsEZxMZZaeIrBoNXlcsnEcRUqXeOq+0wayOL/DqQ7kYh0ExLq22yAbZtGkezrFgb9Oy0L8q/aT@vger.kernel.org, AJvYcCUvvbvVQr0LG8sRaBGCWubngXcglTiF1vwyT2OoUSG7rgpgUpZU17XGrqM5FFltJZiHXDjYhPjiKrQGRxRhPQrO@vger.kernel.org, AJvYcCVUwGZ7s7qkHBAigzmnjwAcETiia+gXe/ICz+Lucf99/k3XsFpxt3a5Wb5uja0CgypV9Hu173m+@vger.kernel.org, AJvYcCWEshaDoslSwAmmMGq2S503ZCwbSO/qeS0owljjWYUC0Y1bLULiQs+IUMXS5WtG5eBJF5A=@vger.kernel.org, AJvYcCWNKLF3LY+V7P5zckAmZWDbVdG8ZKEOIDqEp0NJ+OzPlYf+HTLVLttiPTH1bbw0sKhX+IdtyduqhFDG@vger.kernel.org X-Gm-Message-State: AOJu0Yw/eDIoAFFkFf3QLUtOvO6TLuO1wIg8EhcNR7Uyg0l/JuQCsFJm ddZTeKJ8ifHHenWnQ7BqGj5xCxMiFCxqyCxvUPeWCPIY6ZvHn3OdRdA= X-Gm-Gg: ASbGncuUYauE4kB+yuh1idi/yeoxFoYlolGcy9d+nlYWXNeW20/7sQaBckC9KvBKDDY oLvNEmRvX59Ff/ert4HcxV8EPDT21MMCYx5VeAQJz2o5wD6yjNsiKB6G8ZuQUhAMYBYgKdXS5Ki AIRb5s46CC/nvM/8Esa8M8bWntZbsnMrvLYpp1fmnbmKewkaeRMKrIK5M4WNpfskhkckcqCzXKt Zpfxl12IKc7mGEgZrsoYofZ/ZM6lo2WybLWRSKWwatQ4sGJUwIvX8KVvMQkCUfZrRogagSinxIE q9ccdDBU5MytEWntd0KNSJqZLpEmYK40whsk0KsW9mB6sys3IPDm2cjaSUvxxtv1/X0+Nra9Hpv kRl9CsW/dOSASi5z4N1O04T0= X-Google-Smtp-Source: AGHT+IGqhk2BDmOENKj6dYSheYCLfnncK7OpyMpM5YpFnDZqbsHN5I4tWJo7BQAolfltYHjax/y53g== X-Received: by 2002:a05:6a00:3e27:b0:749:1c27:bcc5 with SMTP id d2e1a72fcca58-74ca84dbbcamr4511329b3a.22.1751557313153; Thu, 03 Jul 2025 08:41:53 -0700 (PDT) Received: from localhost (c-73-158-218-242.hsd1.ca.comcast.net. [73.158.218.242]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-74af541e5b6sm18218323b3a.54.2025.07.03.08.41.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Jul 2025 08:41:52 -0700 (PDT) Date: Thu, 3 Jul 2025 08:41:51 -0700 From: Stanislav Fomichev To: Song Yoong Siang Cc: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Jonathan Corbet , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , KP Singh , Hao Luo , Jiri Olsa , Mykola Lysenko , Shuah Khan , netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH bpf-next,v3 0/2] Clarify and Enhance XDP Rx Metadata Handling Message-ID: References: <20250702165757.3278625-1-yoong.siang.song@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20250702165757.3278625-1-yoong.siang.song@intel.com> On 07/03, Song Yoong Siang wrote: > This patch set improves the documentation and selftests for XDP Rx metadata > handling. The first patch clarifies the documentation around XDP metadata > layout and METADATA_SIZE. The second patch enhances the BPF selftests to > make XDP metadata handling more robust across different NICs. > > Prior to this patch set, the XDP program might accidentally overwrite the > device-reserved metadata. > > V3: > - update doc and commit msg accordingly. > > V2: https://lore.kernel.org/netdev/20250702030349.3275368-1-yoong.siang.song@intel.com/ > - unconditionally do bpf_xdp_adjust_meta with -XDP_METADATA_SIZE (Stanislav) > > V1: https://lore.kernel.org/netdev/20250701042940.3272325-1-yoong.siang.song@intel.com/ Acked-by: Stanislav Fomichev