From patchwork Thu Feb 20 02:53:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Abdul Rahim, Faizal" X-Patchwork-Id: 13983258 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 9E905C021AA for ; Thu, 20 Feb 2025 03:00:30 +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=L663zWHJAJ0zSwFRe0E4kjWKNAWHc7L/2kdkPLFx/qk=; b=BpnLiihTyQ5Gon7/dHjvggs3F3 VnVSpAHEufADnCikF2ulUV2qLZcU5nbKWuuM69tPV0vKiXdCL7FQFSPQeySe8ZUWvxtHOyRd5LF7Q CpfPE+QtMU4cT80/8byOD2ktIBTzPVKeZ+bFnb9izKJdxO5umUGBpKnlhy4pSyRYBDVyg6yQY32br bDl8RIUy1DnXGaYLYHKKcD0Xw3kDW6ZEyn52q3CzEiqlksYofA5RC/tr5fsaHfHeq/+RUlUnAI9qP ob485ecbDY6klP1pL7BZlf6Ge/qK4qZ9+vjMjR/gogQ7gJ63zmSzc9Iwy3YuRIHal8PJdPSyYddc/ frmbdhhg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tkwnR-0000000GRuS-2NCo; Thu, 20 Feb 2025 03:00:17 +0000 Received: from mgamail.intel.com ([192.198.163.14]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tkwhu-0000000GQ64-0cbD for linux-arm-kernel@lists.infradead.org; Thu, 20 Feb 2025 02:54:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1740020074; x=1771556074; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; b=lMLD7M57ZCKyK24YXPn1fyteOpIZFsRunzdbNBm3YZyLGpPoOVL+6uYD gtLVwXYgRlwFhVxmTDoK27MRJPaSzVnHKqz/HRxdp9Ck4Y3lS5P1Zkjb1 vbIf8fHh4BV434ALg5oqSbPS2WUty9eGpjFaQ62UT5jkZjlMQ+psToAYD 4sRP1cr4a34+C2zomMUSVZdvORa+0lUCXB4hA6I3baSYwuDWatdkuHjI3 P3Qr2KsDJLy8DPmCvOdiOsH19pV6UY88MvjLpDqQzpl95zNwotddPDqNj WISOQDieCkkSG0ZXUPSVbJc0/xEbkE7/SK1D8yS+Uoi1czw1jqdr3+/tf w==; X-CSE-ConnectionGUID: L368YRQdSIWNCANdlyg8TQ== X-CSE-MsgGUID: T6jyHpchShKfjPqaQDsTBw== X-IronPort-AV: E=McAfee;i="6700,10204,11350"; a="41041970" X-IronPort-AV: E=Sophos;i="6.13,300,1732608000"; d="scan'208";a="41041970" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2025 18:54:34 -0800 X-CSE-ConnectionGUID: EwkMu9iDR0ilK+hqVznZsA== X-CSE-MsgGUID: HFzUk+/HR9mEDTXCYkmNAA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,300,1732608000"; d="scan'208";a="115104284" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa008.fm.intel.com with ESMTP; 19 Feb 2025 18:54:27 -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 v5 3/9] igc: Optimize the TX packet buffer utilization Date: Wed, 19 Feb 2025 21:53:43 -0500 Message-Id: <20250220025349.3007793-4-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250220025349.3007793-1-faizal.abdul.rahim@linux.intel.com> References: <20250220025349.3007793-1-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-20250219_185434_218889_EC2FB436 X-CRM114-Status: GOOD ( 10.36 ) 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 */