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Fri, 1 Nov 2024 11:16:30 +0000 Date: Fri, 1 Nov 2024 11:16:23 +0000 From: Bruce Richardson To: Morten =?iso-8859-1?Q?Br=F8rup?= CC: Lukas Sismis , , , , Subject: Re: [PATCH v3 1/2] net/ixgbe: increase the maximum of RX/TX descriptors Message-ID: References: <20241029124832.224112-1-sismis@cesnet.cz> <20241030154256.379249-1-sismis@cesnet.cz> <20241030154256.379249-2-sismis@cesnet.cz> <98CBD80474FA8B44BF855DF32C47DC35E9F854@smartserver.smartshare.dk> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35E9F854@smartserver.smartshare.dk> X-ClientProxiedBy: WA2P291CA0025.POLP291.PROD.OUTLOOK.COM (2603:10a6:1d0:1f::6) To DS0PR11MB7309.namprd11.prod.outlook.com (2603:10b6:8:13e::17) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR11MB7309:EE_|SA1PR11MB8542:EE_ X-MS-Office365-Filtering-Correlation-Id: 289ef33a-d8c7-4836-f04c-08dcfa66a296 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024; 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By bufferring more packets with RX/TX > > descriptors, the applications can better handle the processing > > peaks. > > > > Setting ixgbe max descriptors to 8192 as per datasheet: > > Register name: RDLEN > > Description: Descriptor Ring Length. > > This register sets the number of bytes > > allocated for descriptors in the circular descriptor buffer. > > It must be 128B aligned (7 LS bit must be set to zero). > > ** Note: validated Lengths up to 128K (8K descriptors). ** FYI: Don't think we need the full quote from the datasheet, reducing this to a one-line summary on apply. > > > > Signed-off-by: Lukas Sismis > > --- > > Drivers should reflect hardware capabilities; it's not up to the driver to impose artificial limits on applications. Thank you for fixing this, Lukas. > > Acked-by: Morten Brørup > Series-acked-by: Bruce Richardson Both patches applied to dpdk-next-net-intel tree. Thanks, /Bruce