From patchwork Mon Feb 10 07:02:01 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faizal Rahim X-Patchwork-Id: 13967382 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 E6421C02198 for ; Mon, 10 Feb 2025 07:09:02 +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=ptkJ9woiZHHVaI8b7NeMa083ly 1ivpNmt+i4Hqy1iqEHU88KDHSNPHwIQya7oPVoc+ma3y6AQutL6ZTGpEykJZXxlyGExf0qgMU2ql2 XL4qE8xxmsSEyWGAmm9dg+dVVWIMOoSxy3K9Dh/isdSQUnA0r6aWcqG3E/85bj8yc6nqvO61d+oIR WZdyYOZeopduX2RqnOa1ijrmcMXqH1cHNz50AQFANxPtbkPyPSjGXO2YHP5PfHdkDGaGbGx3skNGQ zSJNfiEsIOnzoUV8AmJXCyi1u3KsM3HgBNzBmU7BpYHyOFZQrKWZVDMz//6woduYrz3lYbS9n7VEH GxjdYH0Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1thNuX-0000000GTlS-1jIK; Mon, 10 Feb 2025 07:08:53 +0000 Received: from mgamail.intel.com ([192.198.163.19]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1thNoc-0000000GSMl-0ODm for linux-arm-kernel@lists.infradead.org; Mon, 10 Feb 2025 07:02:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739170966; x=1770706966; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; b=LKsVLgW5aEdDoyJd79xoNQBmM1T3a7qxYH5TfvWdde6EaKj6wb4FQK5u balBlV9zQUU/cxiOuGzNuYypOg5SH1aqYOxSWpa55Sv3A3Edd7JzvS5Jj DSkhxOhWfJanxNNbI1y6BMPDdj08ryU32AJzrD3jqmdNF8CSUY8XT8bjG Z1zdAvgdCxMfvr5ESodNeSlqHJ+l5I52zfF7BtFvkreSLz35ZCxwZDt0g R8Y/z7jhLOgRh2Fi34WDnmIILb/WtW8umwWYV7EPmam6PMpZSlf3XRaxq CzBa/x9gf6RgeI2nKZZbPyHUfK+WgdFuyLdZIjPMKv7YeSIZ+U3RLe5EJ Q==; X-CSE-ConnectionGUID: geBK+CHkRMukeZirUc6rfQ== X-CSE-MsgGUID: Ey3XZ1BhRLSyP6HzeUj7ng== X-IronPort-AV: E=McAfee;i="6700,10204,11340"; a="38937923" X-IronPort-AV: E=Sophos;i="6.13,273,1732608000"; d="scan'208";a="38937923" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2025 23:02:45 -0800 X-CSE-ConnectionGUID: wLT55tOHRMKeuc2LVdnz4w== X-CSE-MsgGUID: Zgli5lz3SPSQKPPmks04Qw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,273,1732608000"; d="scan'208";a="112622530" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa010.fm.intel.com with ESMTP; 09 Feb 2025 23:02:36 -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 v4 3/9] igc: Optimize the TX packet buffer utilization Date: Mon, 10 Feb 2025 02:02:01 -0500 Message-Id: <20250210070207.2615418-4-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250210070207.2615418-1-faizal.abdul.rahim@linux.intel.com> References: <20250210070207.2615418-1-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-20250209_230246_135603_81FC1540 X-CRM114-Status: GOOD ( 10.29 ) 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 */