From patchwork Sun Mar 9 10:46:48 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faizal Rahim X-Patchwork-Id: 14008337 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BDDB5C282D1 for ; Sun, 9 Mar 2025 11:12:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2CEJY1F4XRBdAU2RuRIqR2OHVhcJwUigYBcZKyECxVs=; b=o5a9KRC5o4N5L/La9arRmRMyDH a7ZT2K8EIzEHtFmTx8SM4lBWseJ5r9GNSluzNpaQNGBS8MDMKLfBHhCNcscmFFdMdQ4bLOXVtw4H9 CzGNw0nuRB2GH4g1nvm9OW60xeIx1WZlbEjYLatug2YJ0UJ3qDisT9rQ0GR8/KIpM3qc8DXY7sKbP vGCZZGL/8VhTaBGeT7o4jKdqzARD9dgj3hmvnTAgKQ+NowpccDtgELyLwOE8IGE8hJPje9e0TaeXE V5MHLRCe+J5QsIOY0iYNBxs2uREoPeAFBi3iay9rXw1P+sJKq+Q287qfpPfkixuhbI4lgr/sBXTEe 96t83T7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1trEZx-00000000QUH-18he; Sun, 09 Mar 2025 11:12:21 +0000 Received: from mgamail.intel.com ([198.175.65.16]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1trEDc-00000000OM7-1bIz for linux-arm-kernel@lists.infradead.org; Sun, 09 Mar 2025 10:49:17 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1741517357; x=1773053357; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=/Rpt0g7Ks3pkE+tta5B9MFjJotESPE0HD7Oeoam8bfk=; b=e6Rfz9aeCr5E6/bs1gMK0QBuOLx1GTVLvAtAoIf9o0lnnXFcN8HX8Npe sOFje9CbqRkNvzKbpX4Or9EHtqzHjUibo8+1LqhnFs9QubLpuoygbAI9M vNnE+3PVpi4Vl8jtRwNMexkUXhvO7CpyLqCz1tMpDFJus3q3alZ7e8hrQ MCJpikF1iqrpWYTApSHAKkTIuXjFKyXdnSUxV5l8iyT3gItz39UIVWgdz aGJ8cA2s/Htm0IO41k3mrU21VUGpJQ8gWFwrgieDFph2uZZS4jdYJj/r+ rlcG+hOwsxo0ug8tn7Czzv233NZXzfUBpZx7gQOAgpMXMzHX1MNICoYIz Q==; X-CSE-ConnectionGUID: NsjxXSaaQWej0khFG0M06g== X-CSE-MsgGUID: k3j8urr6S5CsqL71JCvaaA== X-IronPort-AV: E=McAfee;i="6700,10204,11367"; a="42636281" X-IronPort-AV: E=Sophos;i="6.14,234,1736841600"; d="scan'208";a="42636281" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Mar 2025 03:49:16 -0700 X-CSE-ConnectionGUID: pfGT78KETYqlpzGtVGbcyg== X-CSE-MsgGUID: Vkjkd0PTT1Gr0ZqdnB9BuQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,234,1736841600"; d="scan'208";a="124655188" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by orviesa003.jf.intel.com with ESMTP; 09 Mar 2025 03:49:08 -0700 From: Faizal Rahim To: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexandre Torgue , Simon Horman , Russell King , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Furong Xu <0x1207@gmail.com>, Russell King , Vladimir Oltean , Serge Semin , Xiaolei Wang , Suraj Jaiswal , Kory Maincent , Gal Pressman , Jesper Nilsson , Choong Yong Liang , Chwee-Lin Choong , Faizal Rahim , Kunihiko Hayashi , Vinicius Costa Gomes , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org Subject: [PATCH iwl-next v9 14/14] igc: add support to get frame preemption statistics via ethtool Date: Sun, 9 Mar 2025 06:46:48 -0400 Message-Id: <20250309104648.3895551-15-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250309104648.3895551-1-faizal.abdul.rahim@linux.intel.com> References: <20250309104648.3895551-1-faizal.abdul.rahim@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250309_034916_465553_99553AF1 X-CRM114-Status: GOOD ( 13.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 3 2 1 0 3 3 3 3 3 3 3 3 3 3 3 3 \ 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: 64 RX minimum fragment size: 60 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 Co-developed-by: Chwee-Lin Choong Signed-off-by: Chwee-Lin Choong Signed-off-by: Faizal Rahim --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 40 ++++++++++++++++++++ drivers/net/ethernet/intel/igc/igc_regs.h | 16 ++++++++ 2 files changed, 56 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c index fd4b4b332309..324a27a5bef9 100644 --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c @@ -1819,6 +1819,45 @@ 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. + * @reg_value: Register value for IGC_PRMEXCPRCNT + * Return: The count of frame assembly errors. + */ +static u64 igc_ethtool_get_frame_ass_error(u32 reg_value) +{ + /* Out of order statistics */ + u32 ooo_frame_cnt, ooo_frag_cnt; + u32 miss_frame_frag_cnt; + + ooo_frame_cnt = FIELD_GET(IGC_PRMEXCPRCNT_OOO_FRAME_CNT, reg_value); + ooo_frag_cnt = FIELD_GET(IGC_PRMEXCPRCNT_OOO_FRAG_CNT, reg_value); + miss_frame_frag_cnt = FIELD_GET(IGC_PRMEXCPRCNT_MISS_FRAME_FRAG_CNT, reg_value); + + return ooo_frame_cnt + ooo_frag_cnt + miss_frame_frag_cnt; +} + +static u64 igc_ethtool_get_frame_smd_error(u32 reg_value) +{ + return FIELD_GET(IGC_PRMEXCPRCNT_OOO_SMDC, reg_value); +} + +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; + u32 reg_value; + + reg_value = rd32(IGC_PRMEXCPRCNT); + + stats->MACMergeFrameAssErrorCount = igc_ethtool_get_frame_ass_error(reg_value); + stats->MACMergeFrameSmdErrorCount = igc_ethtool_get_frame_smd_error(reg_value); + stats->MACMergeFrameAssOkCount = rd32(IGC_PRMPTDRCNT); + stats->MACMergeFragCountRx = rd32(IGC_PRMEVNTRCNT); + stats->MACMergeFragCountTx = rd32(IGC_PRMEVNTTCNT); +} + static int igc_ethtool_get_link_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd) { @@ -2115,6 +2154,7 @@ static const struct ethtool_ops igc_ethtool_ops = { .set_link_ksettings = igc_ethtool_set_link_ksettings, .self_test = igc_ethtool_diag_test, .get_mm = igc_ethtool_get_mm, + .get_mm_stats = igc_ethtool_get_mm_stats, .set_mm = igc_ethtool_set_mm, }; diff --git a/drivers/net/ethernet/intel/igc/igc_regs.h b/drivers/net/ethernet/intel/igc/igc_regs.h index 12ddc5793651..f343c6bfc6be 100644 --- a/drivers/net/ethernet/intel/igc/igc_regs.h +++ b/drivers/net/ethernet/intel/igc/igc_regs.h @@ -222,6 +222,22 @@ #define IGC_FTQF(_n) (0x059E0 + (4 * (_n))) /* 5-tuple Queue Fltr */ +/* Time sync registers - preemption statistics */ +#define IGC_PRMPTDRCNT 0x04284 /* Good RX Preempted Packets */ +#define IGC_PRMEVNTTCNT 0x04298 /* TX Preemption event counter */ +#define IGC_PRMEVNTRCNT 0x0429C /* RX Preemption event counter */ + + /* Preemption Exception Counter */ + #define IGC_PRMEXCPRCNT 0x42A0 +/* Received out of order packets with SMD-C */ +#define IGC_PRMEXCPRCNT_OOO_SMDC 0x000000FF +/* Received out of order packets with SMD-C and wrong Frame CNT */ +#define IGC_PRMEXCPRCNT_OOO_FRAME_CNT 0x0000FF00 +/* Received out of order packets with SMD-C and wrong Frag CNT */ +#define IGC_PRMEXCPRCNT_OOO_FRAG_CNT 0x00FF0000 +/* Received packets with SMD-S and wrong Frag CNT and Frame CNT */ +#define IGC_PRMEXCPRCNT_MISS_FRAME_FRAG_CNT 0xFF000000 + /* Transmit Scheduling Registers */ #define IGC_TQAVCTRL 0x3570 #define IGC_TXQCTL(_n) (0x3344 + 0x4 * (_n))