From patchwork Mon Dec 16 06:47:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Abdul Rahim, Faizal" X-Patchwork-Id: 13909281 X-Patchwork-Delegate: kuba@kernel.org Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.16]) (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 2D1A91D8A0D; Mon, 16 Dec 2024 06:49:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.16 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734331762; cv=none; b=rW0UfMZlTYavcRn3hYMibpbtgYkNb7faIcriR/XjgLuaETEPFgXjUUbfOO1nif+zdSFAuZ3251UXXvn4jk4wOqX8e/fL9k+4ydwOL58H9rTiT0p44xHcWW+b8f5IR8tIS785FC5XjzswdnZI3algXQ9+EFP4yBMc32/HaUEuoRU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734331762; c=relaxed/simple; bh=GmF50IpDra1dgYb/XdxHNOCwP4kOlp3rid6eI8frReo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=dnVXXIILdN7mBUF1QrSqJnUJclejjCc2urP/xvYQHqNn8x2DcyEhL8OiGXBEA5Wk9unpoBzXOf85+0V34om60B/c7nu2VDWcK7SZW8g6jnKcwsbn0xQME8vYCWC0N12ZIyTFi1vHOTD/NRiQOWNOsB0sYWuAh/IKde+UQfU8s4s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=DLU6U5tj; arc=none smtp.client-ip=198.175.65.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none 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="DLU6U5tj" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1734331761; x=1765867761; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GmF50IpDra1dgYb/XdxHNOCwP4kOlp3rid6eI8frReo=; b=DLU6U5tjK6XWp4yMg0hfsR7g3ieq7swdkDIG5GY1yxDkcyaO7dNKT9hC hmakq1N7I6T/FZQFdpgJ/dWziptAfhABQGW5UyGFuruE9R1lL7gWdoOui 3h0agItNEfuVTb27u6bOBTJGJiMRCyR1XcC78mTCbjXDbDpof4g4Be6Mj zXrMBYc86B2hJm6YLrqe/AEQ8Q3ZLEEyraFa1qZV8xJUpE0HAyGNctTjq JEU2iWSsqJ/KtjIUjUS+tp29lROJuYE2HT4X0jYMKd4aGLgRQEtl45g9C 9rkrhkIetrosZ0DL/MT/cPM91686/naRixCZ3CmQzlsOcQ/fkUZhuaFea A==; X-CSE-ConnectionGUID: juEgZ7myRpqdBhtf4DbLgQ== X-CSE-MsgGUID: ZPt03ujwQGW+Li7qQ77L8g== X-IronPort-AV: E=McAfee;i="6700,10204,11287"; a="34848276" X-IronPort-AV: E=Sophos;i="6.12,237,1728975600"; d="scan'208";a="34848276" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Dec 2024 22:49:21 -0800 X-CSE-ConnectionGUID: q9eNcpKNR8q0nYi2da+eBQ== X-CSE-MsgGUID: CKt6U1j/TfWPRTe6NB0olw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="128101929" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa001.fm.intel.com with ESMTP; 15 Dec 2024 22:49:17 -0800 From: Faizal Rahim To: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Vinicius Costa Gomes Cc: Faizal Rahim , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH iwl-next 9/9] igc: Add support to get frame preemption statistics via ethtool Date: Mon, 16 Dec 2024 01:47:20 -0500 Message-Id: <20241216064720.931522-10-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241216064720.931522-1-faizal.abdul.rahim@linux.intel.com> References: <20241216064720.931522-1-faizal.abdul.rahim@linux.intel.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Implemented "ethtool --include-statistics --show-mm" callback for IGC. Tested preemption scenario to check preemption statistics: 1) Trigger verification handshake on both boards: $ sudo ethtool --set-mm enp1s0 pmac-enabled on $ sudo ethtool --set-mm enp1s0 tx-enabled on $ sudo ethtool --set-mm enp1s0 verify-enabled on 2) Set preemptible or express queue in taprio for tx board: $ sudo tc qdisc replace dev enp1s0 parent root handle 100 taprio \ num_tc 4 map 0 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 \ queues 1@0 1@1 1@2 1@3 base-time 0 sched-entry S F 100000 \ fp E E P P 3) Send large size packets on preemptible queue 4) Send small size packets on express queue to preempt packets in preemptible queue 5) Show preemption statistics on the receiving board: $ ethtool --include-statistics --show-mm enp1s0 MAC Merge layer state for enp1s0: pMAC enabled: on TX enabled: on TX active: on TX minimum fragment size: 252 RX minimum fragment size: 252 Verify enabled: on Verify time: 128 Max verify time: 128 Verification status: SUCCEEDED Statistics: MACMergeFrameAssErrorCount: 0 MACMergeFrameSmdErrorCount: 0 MACMergeFrameAssOkCount: 511 MACMergeFragCountRx: 764 MACMergeFragCountTx: 0 MACMergeHoldCount: 0 Co-developed-by: Vinicius Costa Gomes Signed-off-by: Vinicius Costa Gomes Signed-off-by: Faizal Rahim --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 40 ++++++++++++++++++++ drivers/net/ethernet/intel/igc/igc_regs.h | 19 ++++++++++ 2 files changed, 59 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c index 16aa6e4e1727..90a9dbb0d901 100644 --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c @@ -1835,6 +1835,45 @@ static int igc_ethtool_set_mm(struct net_device *netdev, return igc_tsn_offload_apply(adapter); } +/** + * igc_ethtool_get_frame_ass_error - Get the frame assembly error count. + * @dev: Pointer to the net_device structure. + * @return: The count of frame assembly errors. + */ +static u64 igc_ethtool_get_frame_ass_error(struct net_device *dev) +{ + struct igc_adapter *adapter = netdev_priv(dev); + u32 ooo_smdc, ooo_frame_cnt, ooo_frag_cnt; /* Out of order statistics */ + struct igc_hw *hw = &adapter->hw; + u32 miss_frame_frag_cnt; + u32 reg_value; + + reg_value = rd32(IGC_PRMEXPRCNT); + ooo_smdc = reg_value & IGC_PRMEXPRCNT_OOO_SMDC; + ooo_frame_cnt = (reg_value & IGC_PRMEXPRCNT_OOO_FRAME_CNT) + >> IGC_PRMEXPRCNT_OOO_FRAME_CNT_SHIFT; + ooo_frag_cnt = (reg_value & IGC_PRMEXPRCNT_OOO_FRAG_CNT) + >> IGC_PRMEXPRCNT_OOO_FRAG_CNT_SHIFT; + miss_frame_frag_cnt = (reg_value & IGC_PRMEXPRCNT_MISS_FRAME_FRAG_CNT) + >> IGC_PRMEXPRCNT_MISS_FRAME_FRAG_CNT_SHIFT; + + return ooo_smdc + ooo_frame_cnt + ooo_frag_cnt + miss_frame_frag_cnt; +} + +static void igc_ethtool_get_mm_stats(struct net_device *dev, + struct ethtool_mm_stats *stats) +{ + struct igc_adapter *adapter = netdev_priv(dev); + struct igc_hw *hw = &adapter->hw; + + stats->MACMergeFrameAssErrorCount = igc_ethtool_get_frame_ass_error(dev); + stats->MACMergeFrameSmdErrorCount = 0; /* Not available in IGC */ + stats->MACMergeFrameAssOkCount = rd32(IGC_PRMPTDRCNT); + stats->MACMergeFragCountRx = rd32(IGC_PRMEVNTRCNT); + stats->MACMergeFragCountTx = rd32(IGC_PRMEVNTTCNT); + stats->MACMergeHoldCount = 0; /* Not available in IGC */ +} + static int igc_ethtool_get_link_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd) { @@ -2124,6 +2163,7 @@ static const struct ethtool_ops igc_ethtool_ops = { .get_channels = igc_ethtool_get_channels, .get_mm = igc_ethtool_get_mm, .set_mm = igc_ethtool_set_mm, + .get_mm_stats = igc_ethtool_get_mm_stats, .set_channels = igc_ethtool_set_channels, .get_priv_flags = igc_ethtool_get_priv_flags, .set_priv_flags = igc_ethtool_set_priv_flags, diff --git a/drivers/net/ethernet/intel/igc/igc_regs.h b/drivers/net/ethernet/intel/igc/igc_regs.h index 12ddc5793651..f40946cce35a 100644 --- a/drivers/net/ethernet/intel/igc/igc_regs.h +++ b/drivers/net/ethernet/intel/igc/igc_regs.h @@ -222,6 +222,25 @@ #define IGC_FTQF(_n) (0x059E0 + (4 * (_n))) /* 5-tuple Queue Fltr */ +/* Time sync registers - preemption statistics */ +#define IGC_PRMEVNTTCNT 0x04298 /* TX Preemption event counter */ +#define IGC_PRMEVNTRCNT 0x0429C /* RX Preemption event counter */ +#define IGC_PRMPTDRCNT 0x04284 /* Good RX Preempted Packets */ + + /* Preemption Exception Counter */ +#define IGC_PRMEXPRCNT 0x042A0 +/* Received out of order packets with SMD-C and NOT ReumeRx */ +#define IGC_PRMEXPRCNT_OOO_SMDC 0x000000FF +/* Received out of order packets with SMD-C and wrong Frame CNT */ +#define IGC_PRMEXPRCNT_OOO_FRAME_CNT 0x0000FF00 +#define IGC_PRMEXPRCNT_OOO_FRAME_CNT_SHIFT 8 +/* Received out of order packets with SMD-C and wrong Frag CNT */ +#define IGC_PRMEXPRCNT_OOO_FRAG_CNT 0x00FF0000 +#define IGC_PRMEXPRCNT_OOO_FRAG_CNT_SHIFT 16 +/* Received packets with SMD-S and ReumeRx */ +#define IGC_PRMEXPRCNT_MISS_FRAME_FRAG_CNT 0xFF000000 +#define IGC_PRMEXPRCNT_MISS_FRAME_FRAG_CNT_SHIFT 24 + /* Transmit Scheduling Registers */ #define IGC_TQAVCTRL 0x3570 #define IGC_TXQCTL(_n) (0x3344 + 0x4 * (_n))