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Thu, 27 Mar 2025 13:07:17 +0000 Message-ID: <0f2227e3-10f5-4915-be92-e130a875fc67@intel.com> Date: Thu, 27 Mar 2025 15:07:08 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [Intel-wired-lan] [PATCH net-next] igc: Fix TX drops in XDP ZC To: Zdenek Bouska , Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , "Paolo Abeni" , Alexei Starovoitov , "Daniel Borkmann" , Jesper Dangaard Brouer , John Fastabend , Andre Guedes , Vedang Patel , "Maciej Fijalkowski" , Jithu Joseph , Song Yoong Siang , Florian Bezdeka CC: , , , References: <20250319-igc-fix-tx-zero-copy-drops-v1-1-d90bc63a4dc4@siemens.com> Content-Language: en-US From: Mor Bar-Gabay In-Reply-To: <20250319-igc-fix-tx-zero-copy-drops-v1-1-d90bc63a4dc4@siemens.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: TL2P290CA0003.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:2::20) To CY5PR11MB6307.namprd11.prod.outlook.com (2603:10b6:930:21::20) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR11MB6310:EE_|SN7PR11MB7639:EE_ X-MS-Office365-Filtering-Correlation-Id: a0b7a0ae-a8a9-45ec-285d-08dd6d304c8d X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016|7053199007|921020; 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Not even AF_XDP completion was done for dropped frames. > > It can be reproduced on i226 by sending 100000x 60 B frames with > launch time set to minimal IPG (672 ns between starts of frames) > on 1Gbit/s. Always 1026 frames are not sent and are missing a > completion. > > Fixes: 9acf59a752d4c ("igc: Enable TX via AF_XDP zero-copy") > Signed-off-by: Zdenek Bouska > Reviewed-by: Song Yoong Siang > Reviewed-by: Florian Bezdeka > --- > drivers/net/ethernet/intel/igc/igc_main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > Tested-by: Mor Bar-Gabay