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Tue, 18 Mar 2025 15:14:44 +0000 Subject: Re: [Intel-wired-lan] [PATCH iwl-next] igc: enable HW vlan tag insertion/stripping by default To: Rui Salvaterra , , CC: , , , , References: <20250313093615.8037-1-rsalvaterra@gmail.com> From: "Lifshits, Vitaly" Message-ID: <168f5e6c-a585-fb7c-f6a8-6fa8df09d00b@intel.com> Date: Tue, 18 Mar 2025 17:14:38 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 In-Reply-To: <20250313093615.8037-1-rsalvaterra@gmail.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-ClientProxiedBy: TL0P290CA0003.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:5::18) To PH0PR11MB5949.namprd11.prod.outlook.com (2603:10b6:510:144::6) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB5949:EE_|IA1PR11MB6348:EE_ X-MS-Office365-Filtering-Correlation-Id: 972af0a0-c9c7-4c01-acb2-08dd662f9d2e 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|1800799024|366016|376014; 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Fixes an out-of-the-box performance issue when running > OpenWrt on typical mini-PCs with igc-supported Ethernet controllers and 802.1Q > VLAN configurations, as ethtool isn't part of the default packages and sane > defaults are expected. > > In my specific case, with an Intel N100-based machine with four I226-V Ethernet > controllers, my upload performance increased from under 30 Mb/s to the expected > ~1 Gb/s. > > Signed-off-by: Rui Salvaterra > --- > drivers/net/ethernet/intel/igc/igc_main.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c > index 84307bb7313e..1cb9ce8aa743 100644 > --- a/drivers/net/ethernet/intel/igc/igc_main.c > +++ b/drivers/net/ethernet/intel/igc/igc_main.c > @@ -7049,6 +7049,9 @@ static int igc_probe(struct pci_dev *pdev, > netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | > NETDEV_XDP_ACT_XSK_ZEROCOPY; > > + /* enable HW vlan tag insertion/stripping by default */ > + netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; > + > /* MTU range: 68 - 9216 */ > netdev->min_mtu = ETH_MIN_MTU; > netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE; > Reviewed-by: Vitaly Lifshits