{"id":2227759,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2227759/?format=json","web_url":"http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260424075907.310456-1-khai.wen.tan@linux.intel.com/","project":{"id":46,"url":"http://patchwork.ozlabs.org/api/1.1/projects/46/?format=json","name":"Intel Wired Ethernet development","link_name":"intel-wired-lan","list_id":"intel-wired-lan.osuosl.org","list_email":"intel-wired-lan@osuosl.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260424075907.310456-1-khai.wen.tan@linux.intel.com>","date":"2026-04-24T07:59:07","name":"[iwl-net,1/1] igc: skip RX timestamp header for frame preemption verification","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"2291f8f219f135958103b2159b6ca705b8bdbc7b","submitter":{"id":93102,"url":"http://patchwork.ozlabs.org/api/1.1/people/93102/?format=json","name":"KhaiWenTan","email":"khai.wen.tan@linux.intel.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260424075907.310456-1-khai.wen.tan@linux.intel.com/mbox/","series":[{"id":501317,"url":"http://patchwork.ozlabs.org/api/1.1/series/501317/?format=json","web_url":"http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=501317","date":"2026-04-24T07:59:07","name":"[iwl-net,1/1] igc: skip RX timestamp header for frame preemption verification","version":1,"mbox":"http://patchwork.ozlabs.org/series/501317/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227759/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227759/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=Yc9ITgo7;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::137; 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a=\"89379241\"","E=Sophos;i=\"6.23,196,1770624000\"; d=\"scan'208\";a=\"89379241\"","E=Sophos;i=\"6.23,196,1770624000\"; d=\"scan'208\";a=\"228330450\""],"X-ExtLoop1":"1","From":"KhaiWenTan ","To":"anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com,\n andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,\n kuba@kernel.org, pabeni@redhat.com, chwee.lin.choong@intel.com,\n vladimir.oltean@nxp.com, vinicius.gomes@intel.com","Cc":"faizal.abdul.rahim@linux.intel.com, intel-wired-lan@lists.osuosl.org,\n netdev@vger.kernel.org, linux-kernel@vger.kernel.org,\n khai.wen.tan@intel.com, hong.aun.looi@intel.com,\n faizal.abdul.rahim@intel.com, KhaiWenTan ","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","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Mailman-Original-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1777018930; x=1808554930;\n h=from:to:cc:subject:date:message-id:mime-version:\n content-transfer-encoding;\n bh=BP1jtlFzuy/jbBYrDe/iU+3cgpfGhVIi+xBQHeCU6P8=;\n b=nlXR83RbSm+2Fru0p4HzcpVuAYqTE2Uqz7sFMTOmXd2OU9eTNEwVmKaB\n qzPKHGxEKRom1+vPmqqk68EJFIQ04adUfqyPu1dWSUrZvmSjEmunpkRTs\n jv25pr2GuICwdwKMOIV3luBZ1190yYWO6Yuc0Orpyf5Us8r65sRYEOKf4\n eEhQO+vMZaambCt6hqNg5LclUUI0vqllPAELaC35n1W6TCG1oj7q5kb5w\n Ulh1zLlDK/iSkKu9aZYQ1oGolVWqIYOf3Tk+g16pS9CTX8KoZvj2WaK+I\n KKTOHRrb0zuOJ9zVN3dlpDmjjh55Jq4dRfsji8yL/AFkI+RD6iu+0h9xu\n w==;","X-Mailman-Original-Authentication-Results":["smtp3.osuosl.org;\n dmarc=none (p=none dis=none)\n header.from=linux.intel.com","smtp3.osuosl.org;\n dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com\n header.a=rsa-sha256 header.s=Intel header.b=nlXR83Rb"],"Subject":"[Intel-wired-lan] [PATCH iwl-net 1/1] igc: skip RX timestamp header\n for frame preemption verification","X-BeenThere":"intel-wired-lan@osuosl.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Intel Wired Ethernet Linux Kernel Driver Development\n ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"intel-wired-lan-bounces@osuosl.org","Sender":"\"Intel-wired-lan\" "},"content":"When RX hardware timestamping is enabled, a 16-byte inline timestamp header\nis added to the start of the packet buffer, causing FPE handshake\nverification to fail.\n\nBecause an incorrect packet buffer is passed to igc_fpe_handle_mpacket(),\nthe mem_is_zero() check inspects the timestamp metadata instead of the\nactual mPacket payload. As a result, valid Verify/Response mPackets can be\nmissed when inline RX timestamps are present.\n\nPass pktbuf + pkt_offset to igc_fpe_handle_mpacket() so it inspects the\nactual mPacket payload instead of the timestamp header.\n\nFixes: 5422570c0010 (\"igc: add support for frame preemption verification\")\nCo-developed-by: Faizal Rahim \nSigned-off-by: Faizal Rahim \nSigned-off-by: KhaiWenTan \n---\n drivers/net/ethernet/intel/igc/igc_main.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c\nindex 8ac16808023c..c470d2354ce8 100644\n--- a/drivers/net/ethernet/intel/igc/igc_main.c\n+++ b/drivers/net/ethernet/intel/igc/igc_main.c\n@@ -2649,7 +2649,7 @@ static int igc_clean_rx_irq(struct igc_q_vector *q_vector, const int budget)\n \t\t}\n \n \t\tif (igc_fpe_is_pmac_enabled(adapter) &&\n-\t\t igc_fpe_handle_mpacket(adapter, rx_desc, size, pktbuf)) {\n+\t\t igc_fpe_handle_mpacket(adapter, rx_desc, size, pktbuf + pkt_offset)) {\n \t\t\t/* Advance the ring next-to-clean */\n \t\t\tigc_is_non_eop(rx_ring, rx_desc);\n \t\t\tcleaned_count++;\n","prefixes":["iwl-net","1/1"]}