From patchwork Mon Mar 3 10:26:52 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faizal Rahim X-Patchwork-Id: 13998548 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 D7A87C282C6 for ; Mon, 3 Mar 2025 10:34:08 +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=L663zWHJAJ0zSwFRe0E4kjWKNAWHc7L/2kdkPLFx/qk=; b=Oy6rZNyVIn5TkFFPVw/N214FyP vF4AzznB7KzWNzKu0+glqiNsbnheKLT9U5NAn/QwnGWUSxO8t9EsqHfaId3MrMbfHpl7zDLv4GUgy 7q8YgRlHiv7ZgCNneA8V54xmn49s3gpQZvMPn3cKCvtIbpE3voKh53Y7THC+WNbFL5/Re77yy+snC L/zkMS7EhFviVYPjNZu/wZOvrJxrS5PrdRG2QXHh4RrkU4vKkeEi94njonyrwhKEaefxafdfIrp1q Q4zMO2Pvh7tL43GYTQXInqPk2P+XyUX0o0ICJCq+K8Rq6yd3vsmeiSw1zqYgVLv1/gArhchRHKPP9 a3Uto65w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tp37X-00000000LMs-0xCL; Mon, 03 Mar 2025 10:33:59 +0000 Received: from mgamail.intel.com ([198.175.65.9]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tp31d-00000000K0J-2I36 for linux-arm-kernel@lists.infradead.org; Mon, 03 Mar 2025 10:27:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1740997673; x=1772533673; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; b=KIyiRd3K42Kv/on75UpkTKyQQWd2ofSafahCZxDz5yUNlyUg/Ysi5ZK8 teuytADZjySsTVaCBvvVUt9iUF/rssee4V6IBpnJilIXm9RadheGhwiae OBmPwa1E2Vgq5GJYNyjA8HQ1CaCUAghTKp+O5BvCpJs6l7a0f27ChtwCH neZZlu5h696RB7tSifnuXu/A4Fux48H9q6sHlHP9d4MCHNxW+AybiTrBe SUT1tAPg8dLz2a+2THrWlIrUrGpql3iHLhPpx+wvzqwFvD99UrBHxi6TM 86vlyu6kNeMiHZYBKP/B3Q54xXsScA6rImDxnMSuUl589i5y4zvlmcMDl w==; X-CSE-ConnectionGUID: sKdsfXjvRZ6yZ+96h1qaUg== X-CSE-MsgGUID: 4F2JHbBjSlSA2N7CfHkuCg== X-IronPort-AV: E=McAfee;i="6700,10204,11361"; a="64310128" X-IronPort-AV: E=Sophos;i="6.13,329,1732608000"; d="scan'208";a="64310128" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Mar 2025 02:27:53 -0800 X-CSE-ConnectionGUID: bzzqNQ9KRwmBcBOF9J3FRA== X-CSE-MsgGUID: +JhLkkIHRPitcZla1/YuwQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,329,1732608000"; d="scan'208";a="122569877" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa005.fm.intel.com with ESMTP; 03 Mar 2025 02:27:46 -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 , Furong Xu <0x1207@gmail.com>, Russell King , Vladimir Oltean , Serge Semin , Xiaolei Wang , Suraj Jaiswal , Kory Maincent , Gal Pressman , Jesper Nilsson , Andrew Halaney , Choong Yong Liang , 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 v7 3/9] igc: Optimize the TX packet buffer utilization Date: Mon, 3 Mar 2025 05:26:52 -0500 Message-Id: <20250303102658.3580232-4-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250303102658.3580232-1-faizal.abdul.rahim@linux.intel.com> References: <20250303102658.3580232-1-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-20250303_022753_632131_3B733D0D X-CRM114-Status: GOOD ( 10.05 ) 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 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 */