Message ID | 20240913152915.2981126-1-vladimir.oltean@nxp.com (mailing list archive) |
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Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, Andrew Lunn <andrew@lunn.ch>, Florian Fainelli <f.fainelli@gmail.com>, Petr Machata <petrm@nvidia.com>, Ido Schimmel <idosch@nvidia.com>, Claudiu Manoil <claudiu.manoil@nxp.com>, Alexandre Belloni <alexandre.belloni@bootlin.com>, UNGLinuxDriver@microchip.com, Jamal Hadi Salim <jhs@mojatatu.com>, Cong Wang <xiyou.wangcong@gmail.com>, Jiri Pirko <jiri@resnulli.us>, linux-kernel@vger.kernel.org Subject: [RFC PATCH net-next 0/6] Mirroring to DSA CPU port Date: Fri, 13 Sep 2024 18:29:09 +0300 Message-Id: <20240913152915.2981126-1-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.34.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: VI1PR0102CA0005.eurprd01.prod.exchangelabs.com (2603:10a6:802::18) To AM8PR04MB7779.eurprd04.prod.outlook.com (2603:10a6:20b:24b::14) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: <netdev.vger.kernel.org> List-Subscribe: <mailto:netdev+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:netdev+unsubscribe@vger.kernel.org> MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM8PR04MB7779:EE_|VI2PR04MB10859:EE_ X-MS-Office365-Filtering-Correlation-Id: ced69933-641f-4fbd-80d9-08dcd408e5a5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|52116014|376014|7416014|1800799024|366016|38350700014; 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Mirroring to DSA CPU port
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On Fri, Sep 13, 2024 at 06:29:09PM +0300, Vladimir Oltean wrote: > Greetings, > > Users of the NXP LS1028A SoC (drivers/net/dsa/ocelot L2 switch inside) > have requested to mirror packets from the ingress of a switch port to > software. Both port-based and flow-based mirroring is required. > > The simplest way I could come up with was to set up tc mirred actions > towards a dummy net_device, and make the offloading of that be accepted > by the driver. Currently, the pattern in drivers is to reject mirred > towards ports they don't know about, but I'm now permitting that, > precisely by mirroring "to the CPU". I am unsure if there are other, > perhaps better ways of doing this. Since there aren't any review comments, I will just resubmit this to net-next.