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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , =?UTF-8?q?Alvin=20=C5=A0ipraga?= , =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Daniel Golle , David Yang , DENG Qingfang , Florian Fainelli , George McCollister , Hauke Mehrtens , Jonas Gorski , Kurt Kanzenbach , Linus Walleij , linux-renesas-soc@vger.kernel.org, Sean Wang , UNGLinuxDriver@microchip.com, Woojung Huh Subject: [PATCH net-next 00/15] Introduce the dsa_xmit_port_mask() tagging protocol helper Date: Thu, 27 Nov 2025 14:08:47 +0200 Message-ID: <20251127120902.292555-1-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.43.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: VE1PR03CA0056.eurprd03.prod.outlook.com (2603:10a6:803:118::45) To AM9PR04MB8585.eurprd04.prod.outlook.com (2603:10a6:20b:438::13) 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: AM9PR04MB8585:EE_|VI2PR04MB11196:EE_ X-MS-Office365-Filtering-Correlation-Id: 89f9c85d-dd6e-40dd-e44b-08de2dadcba6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|10070799003|376014|7416014|52116014|1800799024|19092799006; 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The latter kind is now making use of a dsa_xmit_port_mask() helper, which will decide when to set more than 1 bit in that mask. Why --- David Yang has pointed out in a recently posted patch that HSR packet duplication on transmission can be offloaded even on HSR-unaware switches. This should be made generally available to all DSA switches. How to test ----------- These patches just lay the groundwork, and there should be no functional change - so for this set, regression testing is all that's necessary. For testing the HSR packet duplication idea, I've put together a branch: https://github.com/vladimiroltean/linux/commits/dsa-simple-hsr-offload/ where most drivers are patched to call dsa_port_simple_hsr_join() and dsa_port_simple_hsr_leave(). Assuming there are volunteers to also test the latter, one can enable CONFIG_HSR and create a HSR device using: $ ip link add name hsr0 type hsr slave1 swp0 slave2 swp1 supervision 45 version 1 This needs to be connected using 2 cables to another system where the same command was run. Then, one should be able to ping the other board through the hsr0 interface. Without the Github branch, a ping over HSR should increase the DSA conduit interface's TX counters by 2 packets. With the Github branch, the TX counters should increase by only 1 packet. Why so many patches ------------------- To avoid the situation where a patch has to be backported, conflicts with the work done here, pulls this in as a dependency, and that pulls in 13 other unrelated drivers. These don't have any dependencies between each other and can be cherry-picked at will (except they all depend on patch 1/15). When will you post the rest of the patches from the Github branch ----------------------------------------------------------------- Tomorrow. This will leave some time for some early feedback while still having a chance to catch v6.19. Thanks for reading! Cc: "Alvin Šipraga" Cc: Chester A. Unal" Cc: "Clément Léger" Cc: Daniel Golle Cc: David Yang Cc: DENG Qingfang Cc: Florian Fainelli Cc: George McCollister Cc: Hauke Mehrtens Cc: Jonas Gorski Cc: Kurt Kanzenbach Cc: Linus Walleij Cc: linux-renesas-soc@vger.kernel.org Cc: Sean Wang Cc: UNGLinuxDriver@microchip.com Cc: Woojung Huh Vladimir Oltean (15): net: dsa: introduce the dsa_xmit_port_mask() tagging protocol helper net: dsa: tag_brcm: use the dsa_xmit_port_mask() helper net: dsa: tag_gswip: use the dsa_xmit_port_mask() helper net: dsa: tag_hellcreek: use the dsa_xmit_port_mask() helper net: dsa: tag_ksz: use the dsa_xmit_port_mask() helper net: dsa: tag_mtk: use the dsa_xmit_port_mask() helper net: dsa: tag_mxl_gsw1xx: use the dsa_xmit_port_mask() helper net: dsa: tag_ocelot: use the dsa_xmit_port_mask() helper net: dsa: tag_qca: use the dsa_xmit_port_mask() helper net: dsa: tag_rtl4_a: use the dsa_xmit_port_mask() helper net: dsa: tag_rtl8_4: use the dsa_xmit_port_mask() helper net: dsa: tag_rzn1_a5psw: use the dsa_xmit_port_mask() helper net: dsa: tag_trailer: use the dsa_xmit_port_mask() helper net: dsa: tag_xrs700x: use the dsa_xmit_port_mask() helper net: dsa: tag_yt921x: use the dsa_xmit_port_mask() helper net/dsa/tag.h | 18 ++++++++++++++++++ net/dsa/tag_brcm.c | 8 ++++---- net/dsa/tag_gswip.c | 6 ++---- net/dsa/tag_hellcreek.c | 3 +-- net/dsa/tag_ksz.c | 20 ++++---------------- net/dsa/tag_mtk.c | 3 ++- net/dsa/tag_mxl-gsw1xx.c | 7 ++++--- net/dsa/tag_ocelot.c | 6 ++---- net/dsa/tag_qca.c | 3 +-- net/dsa/tag_rtl4_a.c | 2 +- net/dsa/tag_rtl8_4.c | 3 +-- net/dsa/tag_rzn1_a5psw.c | 3 +-- net/dsa/tag_trailer.c | 3 +-- net/dsa/tag_xrs700x.c | 8 +------- net/dsa/tag_yt921x.c | 8 +++----- 15 files changed, 46 insertions(+), 55 deletions(-) -- 2.43.0