From patchwork Wed Mar 5 13:00:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faizal Rahim X-Patchwork-Id: 14002667 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 491FEC282EC for ; Wed, 5 Mar 2025 13:15:05 +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=FuQwoAjZkNWBhisR6CR0bM8NaS 8P0cPhEIijCGZiopAen3yYfEdiHwuqzJCVWypWMWz1hC21JK+/nnnYV/cKawSjk9QGJTfad9gev5U zL4gX/R+MzLOHH4H0w1LtYU3KCxN5Uchx88GSISm26nXyrMIN3JVNJXdhumYo7FZdfVzqJOZJ+MHM Wg/ZWbTOsVzIBnDSetV/oxI27VpZ34kPjva9gQQTpmeDNQVYUvwbPGlkDD18JiT583vHjYRxteYOZ S5enj8zR0MXYjf3t1+HVIX25QMrGwmnJnz/7YgMdok8EtRlQFJh364zELqYtMdyZyYc1ct4Ryf/1W mMhUimMQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tpoaL-000000089ET-2d8L; Wed, 05 Mar 2025 13:14:53 +0000 Received: from mgamail.intel.com ([198.175.65.15]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tpoNW-000000086XM-1Dtq for linux-arm-kernel@lists.infradead.org; Wed, 05 Mar 2025 13:01:39 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1741179699; x=1772715699; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; b=D99raxHmbywi1E4bYPEFguGPtILEttRRdit8gBeYY5Cy3CKaAeGqmtd7 zBn8aX2fhuhWHQE+MU3X8vq6BWA7yd5FAnMqpwn+vveftKE43oculHApe nbmebCytZGpXoXVjHZQUzqEcWZK6h8pPa9lIKxEeMXYaYCWAdZe1Rf+Ao u695MXGSG8R+yRwbHEzDIk/vglrsdF9lLSU/LW6pmKaQ4v0rphsCJ7zD/ KS0Z9B4ci6ZxDAtDhE0obsZXGlcN7eWKTxfYqfsnnppzkEnxkWbOO156W KgEg8/AKNUKC3gxTGgOKyMUX8vWEgXJi4okkpNeoGRFxkIvYxcdgunlxt w==; X-CSE-ConnectionGUID: 82QUJ6K4Tmagb3O1kE9Qng== X-CSE-MsgGUID: h6Xe1y1SShO2+Kgvx52oZA== X-IronPort-AV: E=McAfee;i="6700,10204,11363"; a="45795033" X-IronPort-AV: E=Sophos;i="6.14,223,1736841600"; d="scan'208";a="45795033" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Mar 2025 05:01:38 -0800 X-CSE-ConnectionGUID: 0uMt2p1XRaOoAu7PqxK9yg== X-CSE-MsgGUID: GiQZI9deSpiHVFQFohpiqA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,223,1736841600"; d="scan'208";a="123277045" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa005.fm.intel.com with ESMTP; 05 Mar 2025 05:01:30 -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 , 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 v8 05/11] igc: optimize the TX packet buffer utilization Date: Wed, 5 Mar 2025 08:00:20 -0500 Message-Id: <20250305130026.642219-6-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250305130026.642219-1-faizal.abdul.rahim@linux.intel.com> References: <20250305130026.642219-1-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-20250305_050138_365407_5F6D7D23 X-CRM114-Status: UNSURE ( 9.89 ) X-CRM114-Notice: Please train this message. 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 */