From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 376831DACB1; Wed, 2 Jul 2025 16:58:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751475523; cv=none; b=VeLAEoVIPmjVocnKBzgeqw4C27CKF2U7n0td0kFpWchCMNq3QvwEo3WJLWmg82IjIWTk5mpODMRmnVbtp6h3r6aR1LAbKKlpUljreKdzrf80DvDqgw3ODnFj8P6TcspzQOkQ4UecD4IgJjMJ3iAoSSEAFTooU6aor0aYkce1fcQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751475523; c=relaxed/simple; bh=/ef4CrFmebCh1AqCX+/iSl6DfpNGDmZ7ZDGmWGiqK8E=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=g6UMd/sigIs/vdgQBAp3j95EUyNe5TRv6wbGdfMecyVgpDzqoPArQiQfnrQ2P2EP1dLQCcqF/+c1WbsdjWUDQjHY6EvVQntDpyCbAygYQ9z8pEqMr7vFJU3a3mSXLm/Il04O37vc8pcybbiCzzqIEcZmwSMFfI0HJjZEtCkChLs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=RSHOxZEC; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="RSHOxZEC" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1751475523; x=1783011523; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=/ef4CrFmebCh1AqCX+/iSl6DfpNGDmZ7ZDGmWGiqK8E=; b=RSHOxZECzkePmjIkf3SuP9X5TEBl+oECLEC79f5PVMK1N5WIb6anjXO9 QgR/UWIoUKXan33D/1ES2AR1dzyAh8qfcIBOTpbO1oRDOete+fUY1Z0tf SRORQKrZIy6cIy35AxgI+mWlsYxBlEt2RPZ3im6MJbkEuLTZEAmfHVaLv ReNKIdjXkq2LnzySjZLjIRC0JYOc0c+iJXQbRNqOLcnlDida/4Grgf+CC JnKGyis3p9OBRAuR9+7y6sLErUY3+hftwg/04jiby+yUGdKiYXIZgVyJC +CF9uVpmFjg1RkIaszybWy8msNgImev0uGG5/DGpqTYbjRbZY2tQpUE9v Q==; X-CSE-ConnectionGUID: VLW5SnE8SsCw5SwEiV+5xg== X-CSE-MsgGUID: 3vB3Ur6QTcKnb3LBM+utVw== X-IronPort-AV: E=McAfee;i="6800,10657,11482"; a="65132604" X-IronPort-AV: E=Sophos;i="6.16,281,1744095600"; d="scan'208";a="65132604" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jul 2025 09:58:42 -0700 X-CSE-ConnectionGUID: AZcKulOWRi+cKuI+6SBM1A== X-CSE-MsgGUID: aYFH497xR6ehS/lwI7YwMQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,281,1744095600"; d="scan'208";a="153538515" Received: from p12ill20yoongsia.png.intel.com ([10.88.227.38]) by orviesa010.jf.intel.com with ESMTP; 02 Jul 2025 09:58:35 -0700 From: Song Yoong Siang To: "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 Cc: netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next,v3 0/2] Clarify and Enhance XDP Rx Metadata Handling Date: Thu, 3 Jul 2025 00:57:55 +0800 Message-Id: <20250702165757.3278625-1-yoong.siang.song@intel.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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/ Song Yoong Siang (2): doc: enhance explanation of XDP Rx metadata layout and METADATA_SIZE selftests/bpf: Enhance XDP Rx metadata handling Documentation/networking/xdp-rx-metadata.rst | 36 +++++++++++++++---- .../selftests/bpf/prog_tests/xdp_metadata.c | 2 +- .../selftests/bpf/progs/xdp_hw_metadata.c | 2 +- .../selftests/bpf/progs/xdp_metadata.c | 2 +- tools/testing/selftests/bpf/xdp_hw_metadata.c | 2 +- tools/testing/selftests/bpf/xdp_metadata.h | 7 ++++ 6 files changed, 41 insertions(+), 10 deletions(-) -- 2.34.1