From patchwork Wed Feb 5 10:05:18 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faizal Rahim X-Patchwork-Id: 13960765 X-Patchwork-Delegate: kuba@kernel.org Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 D105222ACF7; Wed, 5 Feb 2025 10:05:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738749961; cv=none; b=WF4qgZicYos7iyfsmAVURsEwIcpMWHZn5oiIMeSgSGZU6pHTYjNtz9urikebsy3+Uv9ZesCBcTz9wQldZflIC21FnIYJychPrsbGxxIvvlXFIWbNXD+kn4DAioIV36npXHLXKJ7UQL5jnYjq6m/igvAN5RAQuuDui9yGg9cg1rs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738749961; c=relaxed/simple; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=cbNnnnQRyIpLjD2MsZ58UUI46PVz2gTsg3g2Oe3uFZn0slN8lUelWg1h49s667IGoOht1tYvTjsYokXN1+SiG9lsb6yfmteeVLWsCL5XKls3nM39SMMP60j+Ootxwuvj+F0ZGkeu4z4OWHHpjBSpKiBgxeWn2N1xCB4PQaPEKSQ= 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=PdzDGmu2; arc=none smtp.client-ip=198.175.65.21 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="PdzDGmu2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738749959; x=1770285959; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; b=PdzDGmu2Gdg2ISe+844STd0FKAxPRuJ6NE03n2XE8N0cT1M/baOBRrMQ kZNuqBWDLgMZMQfOlnQJn0qPjCZmbgPw2SuxoQo477LZD9k8BsT4idKlE vCZQ+9VOUW28pMyIE83JBlvURJZAugv+x/2dsmafPtJUbH4QYonwdEm4q 5bpGlt3Z3B3VEmtMo3AUpLLvAIydrMLVEVNIJHP042uPYYStAIJ4n4WZw p/nQPChmWXQ51I6hPSu9YbJv7rl8D2V0KC6/XAyG4gSRLr7N/6RKjxjQi n7B0m/Iv7gtO63yMMAh5l/Q1q7v0nCGbFbDJERI0KfnD79PVHsJlOIe6v Q==; X-CSE-ConnectionGUID: joDccVFPT7yFWVfHGTEFAQ== X-CSE-MsgGUID: cgUYhPUVR9SO4AIJnLkoxw== X-IronPort-AV: E=McAfee;i="6700,10204,11336"; a="39204699" X-IronPort-AV: E=Sophos;i="6.13,261,1732608000"; d="scan'208";a="39204699" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2025 02:05:59 -0800 X-CSE-ConnectionGUID: w4+X2uWMRSiBqd4c+mmb3g== X-CSE-MsgGUID: kprGnA/oS7Cxwm+v3SIPjw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="111297712" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by orviesa007.jf.intel.com with ESMTP; 05 Feb 2025 02:05:51 -0800 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 , Russell King , Furong Xu <0x1207@gmail.com>, Vladimir Oltean , Serge Semin , Xiaolei Wang , Suraj Jaiswal , Kory Maincent , Petr Tesarik , Faizal Rahim , Choong Yong Liang , 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 v2 3/9] igc: Optimize the TX packet buffer utilization Date: Wed, 5 Feb 2025 05:05:18 -0500 Message-Id: <20250205100524.1138523-4-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250205100524.1138523-1-faizal.abdul.rahim@linux.intel.com> References: <20250205100524.1138523-1-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 Packet buffers (RX + TX) total 64KB. Neither RX or TX buffers can be larger than 34KB. So divide the buffer equally, 32KB for each. Co-developed-by: Vinicius Costa Gomes Signed-off-by: Vinicius Costa Gomes Signed-off-by: Faizal Rahim --- drivers/net/ethernet/intel/igc/igc_defines.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h index 8e449904aa7d..516ef70c98e9 100644 --- a/drivers/net/ethernet/intel/igc/igc_defines.h +++ b/drivers/net/ethernet/intel/igc/igc_defines.h @@ -400,7 +400,8 @@ #define I225_TXPBSIZE_DEFAULT 0x04000014 /* TXPBSIZE default */ #define IGC_RXPBS_CFG_TS_EN 0x80000000 /* Timestamp in Rx buffer */ -#define IGC_TXPBSIZE_TSN 0x04145145 /* 5k bytes buffer for each queue */ + /* 7KB bytes buffer for each tx queue (total 4 queues) + 4KB for BMC*/ +#define IGC_TXPBSIZE_TSN 0x041c71c7 #define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */ #define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */