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 BE6C11A683D; Fri, 24 Apr 2026 08:22:09 +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=1777018931; cv=none; b=SqWQS2fpNHqnPlrMSlPpZrPQdapdFAkHS6h0ebHYFm+nieEtrEwJ/NLO0Zb/bLmKdPsfdOrjgYBF3Ps5LG6Qk8OdNeRex0Ea8nARz/+I37h4H6Yoa43U5j+G8uKWg5K8WBjjcpN2dOG9vAkyvTpxx1KVL+h8OFF4Kb3HrrEnek8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777018931; c=relaxed/simple; bh=BP1jtlFzuy/jbBYrDe/iU+3cgpfGhVIi+xBQHeCU6P8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=vA4faMhn7Q4h4W/YlnCitKF6KuzgGo50q5lCLnR+v0ZsPJdhJ0gbMK8e7K2Bg65lTdWrpl0VkpXrZTaztf974vxWFc1Le/GIksfxMtbNcjTrUYhopfAMXWTBbpFSqi9O6Mdp5XxDvOLcSF0JE+3zcVhx5B4AMmvU1UZMjtNjHRk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nlXR83Rb; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nlXR83Rb" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1777018930; x=1808554930; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=BP1jtlFzuy/jbBYrDe/iU+3cgpfGhVIi+xBQHeCU6P8=; b=nlXR83RbSm+2Fru0p4HzcpVuAYqTE2Uqz7sFMTOmXd2OU9eTNEwVmKaB qzPKHGxEKRom1+vPmqqk68EJFIQ04adUfqyPu1dWSUrZvmSjEmunpkRTs jv25pr2GuICwdwKMOIV3luBZ1190yYWO6Yuc0Orpyf5Us8r65sRYEOKf4 eEhQO+vMZaambCt6hqNg5LclUUI0vqllPAELaC35n1W6TCG1oj7q5kb5w Ulh1zLlDK/iSkKu9aZYQ1oGolVWqIYOf3Tk+g16pS9CTX8KoZvj2WaK+I KKTOHRrb0zuOJ9zVN3dlpDmjjh55Jq4dRfsji8yL/AFkI+RD6iu+0h9xu w==; X-CSE-ConnectionGUID: 30q9tRLfSjW8C7f8XvGDkg== X-CSE-MsgGUID: e6te3ISYRoG0oVRdWkxHYg== X-IronPort-AV: E=McAfee;i="6800,10657,11765"; a="89379234" X-IronPort-AV: E=Sophos;i="6.23,196,1770624000"; d="scan'208";a="89379234" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2026 01:22:09 -0700 X-CSE-ConnectionGUID: KA9DsLuUT36JWraU6AZaMQ== X-CSE-MsgGUID: /vhcOBMyRaiY/wX48777yw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,196,1770624000"; d="scan'208";a="228330450" Received: from unknown (HELO localhost.png.intel.com) ([10.107.255.61]) by fmviesa006.fm.intel.com with ESMTP; 24 Apr 2026 01:22:05 -0700 From: KhaiWenTan To: anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, chwee.lin.choong@intel.com, vladimir.oltean@nxp.com, vinicius.gomes@intel.com Cc: faizal.abdul.rahim@linux.intel.com, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, khai.wen.tan@intel.com, hong.aun.looi@intel.com, faizal.abdul.rahim@intel.com, KhaiWenTan Subject: [PATCH iwl-net 1/1] igc: skip RX timestamp header for frame preemption verification Date: Fri, 24 Apr 2026 15:59:07 +0800 Message-ID: <20260424075907.310456-1-khai.wen.tan@linux.intel.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When RX hardware timestamping is enabled, a 16-byte inline timestamp header is added to the start of the packet buffer, causing FPE handshake verification to fail. Because an incorrect packet buffer is passed to igc_fpe_handle_mpacket(), the mem_is_zero() check inspects the timestamp metadata instead of the actual mPacket payload. As a result, valid Verify/Response mPackets can be missed when inline RX timestamps are present. Pass pktbuf + pkt_offset to igc_fpe_handle_mpacket() so it inspects the actual mPacket payload instead of the timestamp header. Fixes: 5422570c0010 ("igc: add support for frame preemption verification") Co-developed-by: Faizal Rahim Signed-off-by: Faizal Rahim Signed-off-by: KhaiWenTan --- drivers/net/ethernet/intel/igc/igc_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 8ac16808023c..c470d2354ce8 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -2649,7 +2649,7 @@ static int igc_clean_rx_irq(struct igc_q_vector *q_vector, const int budget) } if (igc_fpe_is_pmac_enabled(adapter) && - igc_fpe_handle_mpacket(adapter, rx_desc, size, pktbuf)) { + igc_fpe_handle_mpacket(adapter, rx_desc, size, pktbuf + pkt_offset)) { /* Advance the ring next-to-clean */ igc_is_non_eop(rx_ring, rx_desc); cleaned_count++; -- 2.43.0