From nobody Sun Feb 8 21:28:02 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 B2E861B4153; Mon, 10 Feb 2025 07:02:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739170968; cv=none; b=bRIvXYTjTUta/o1v6JDIFCbLMXXPR3DFfRSU1tEYSwEsn4aaMERu1uxIV+6vBHbpSA4qT879OaoL0NIFQDjjdyurpcRJIRjWCvlk0zGWagnoxaEzjO2dLQ3Zn2wqulCeNbEK/SvRJboLxw1GfdGg/ObJWTjhESdQaWr+SKW2kSU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739170968; c=relaxed/simple; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=GwJhhy57jDMylPh2j4L7kEDkcVllR/LebcpDCOFHpzgxVN8t4wDHHty+Rasf9bjxOswjsxWE9daXlBp4RlbantK0CNimJHTZgvvekn9t1ZJ2rsivlS5Q4mhqF2YUUT9FvslXJTytcRdb/fNM8t/nUzpiQ2WHCrcSwHEVvWxZnJ4= 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=k8Y5We8v; arc=none smtp.client-ip=192.198.163.19 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="k8Y5We8v" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739170967; x=1770706967; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=0OdUdx+lahN2+LUJ2jOFDFj83SCLzyn+8zKWv0oeisM=; b=k8Y5We8vrYpAmUK8TLBnaQArLyMxjoUVAtrKF/8vK8LsITSOG1iNcL1i ec93ZbjEwwphQ1MDE0j0IyafEdjcjMLOnIAfdc1VFI5c3ql5D9rFrACok p1f3Gf1EZ0IdqlmF+72qgvpb2B3RNh/MKOW9L9KTRpcmLWqkYhsxyyKhQ 1qg+ejs1kiNlN65pnVulw4MaqVKCxl2iLUgIN9zkZjOOD8MLE8w/fkkwr NkQHMlmUVhRSpzuUZTngHombnTgDWKpCPEI5LhH7m7Jk3GFOlg6wvSXQd WvKCHnpExEhypGsGT+GW75y2tDKsdtRXfPdIUA0O3w1QkazH3Qem/q5Z1 w==; X-CSE-ConnectionGUID: m45i1en8SL2bGS7ZxT0zYA== X-CSE-MsgGUID: j2AaVWFlRBe8nlG94MK8jA== X-IronPort-AV: E=McAfee;i="6700,10204,11340"; a="38937917" X-IronPort-AV: E=Sophos;i="6.13,273,1732608000"; d="scan'208";a="38937917" 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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/eth= ernet/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 */ =20 -#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 =20 #define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */ #define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */ --=20 2.34.1