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Sat, 21 Aug 2021 23:05:39 +0000 From: Vladimir Oltean To: netdev@vger.kernel.org Subject: [PATCH net-next 3/4] docs: net: dsa: remove references to struct dsa_device_ops::filter Date: Sun, 22 Aug 2021 02:04:40 +0300 Message-Id: <20210821230441.1371168-4-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210821230441.1371168-1-vladimir.oltean@nxp.com> References: <20210821230441.1371168-1-vladimir.oltean@nxp.com> X-ClientProxiedBy: AM4PR0501CA0047.eurprd05.prod.outlook.com (2603:10a6:200:68::15) To VI1PR04MB5136.eurprd04.prod.outlook.com (2603:10a6:803:55::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (188.25.144.60) by AM4PR0501CA0047.eurprd05.prod.outlook.com (2603:10a6:200:68::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.19 via Frontend Transport; Sat, 21 Aug 2021 23:05:38 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f4f770fa-fef4-4449-3776-08d964f8313e X-MS-TrafficTypeDiagnostic: VI1PR04MB5133: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3044; 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Also, since commit 4e50025129ef ("net: dsa: generalize overhead for taggers that use both headers and trailers"), the next paragraph is no longer true (it is still discouraged to do that, but it is now supported, so no point in mentioning it). Delete. Signed-off-by: Vladimir Oltean --- Documentation/networking/dsa/dsa.rst | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst index 20baacf2bc5c..b64cb4068c13 100644 --- a/Documentation/networking/dsa/dsa.rst +++ b/Documentation/networking/dsa/dsa.rst @@ -200,19 +200,6 @@ receive all frames regardless of the value of the MAC DA. This can be done by setting the ``promisc_on_master`` property of the ``struct dsa_device_ops``. Note that this assumes a DSA-unaware master driver, which is the norm. -Hardware manufacturers are strongly discouraged to do this, but some tagging -protocols might not provide source port information on RX for all packets, but -e.g. only for control traffic (link-local PDUs). In this case, by implementing -the ``filter`` method of ``struct dsa_device_ops``, the tagger might select -which packets are to be redirected on RX towards the virtual DSA user network -interfaces, and which are to be left in the DSA master's RX data path. - -It might also happen (although silicon vendors are strongly discouraged to -produce hardware like this) that a tagging protocol splits the switch-specific -information into a header portion and a tail portion, therefore not falling -cleanly into any of the above 3 categories. DSA does not support this -configuration. - Master network devices ---------------------- From patchwork Sat Aug 21 23:04:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 501295 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F9F7C4338F for ; Sat, 21 Aug 2021 23:05:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6892F61268 for ; 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vger.kernel.org; dmarc=none action=none header.from=nxp.com; Received: from VI1PR04MB5136.eurprd04.prod.outlook.com (2603:10a6:803:55::19) by VI1PR04MB5133.eurprd04.prod.outlook.com (2603:10a6:803:5a::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.22; Sat, 21 Aug 2021 23:05:39 +0000 Received: from VI1PR04MB5136.eurprd04.prod.outlook.com ([fe80::109:1995:3e6b:5bd0]) by VI1PR04MB5136.eurprd04.prod.outlook.com ([fe80::109:1995:3e6b:5bd0%2]) with mapi id 15.20.4436.022; Sat, 21 Aug 2021 23:05:39 +0000 From: Vladimir Oltean To: netdev@vger.kernel.org Subject: [PATCH net-next 4/4] docs: net: dsa: document the new methods for bridge TX forwarding offload Date: Sun, 22 Aug 2021 02:04:41 +0300 Message-Id: <20210821230441.1371168-5-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210821230441.1371168-1-vladimir.oltean@nxp.com> References: <20210821230441.1371168-1-vladimir.oltean@nxp.com> X-ClientProxiedBy: AM4PR0501CA0047.eurprd05.prod.outlook.com (2603:10a6:200:68::15) To VI1PR04MB5136.eurprd04.prod.outlook.com (2603:10a6:803:55::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (188.25.144.60) by AM4PR0501CA0047.eurprd05.prod.outlook.com (2603:10a6:200:68::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.19 via Frontend Transport; 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Signed-off-by: Vladimir Oltean --- Documentation/networking/dsa/dsa.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst index b64cb4068c13..89bb4fa4c362 100644 --- a/Documentation/networking/dsa/dsa.rst +++ b/Documentation/networking/dsa/dsa.rst @@ -650,6 +650,22 @@ Bridge layer CPU port, and flooding towards the CPU port should also be enabled, due to a lack of an explicit address filtering mechanism in the DSA core. +- ``port_bridge_tx_fwd_offload``: bridge layer function invoked after + ``port_bridge_join`` when a driver sets ``ds->num_fwd_offloading_bridges`` to + a non-zero value. Returning success in this function activates the TX + forwarding offload bridge feature for this port, which enables the tagging + protocol driver to inject data plane packets towards the bridging domain that + the port is a part of. Data plane packets are subject to FDB lookup, hardware + learning on the CPU port, and do not override the port STP state. + Additionally, replication of data plane packets (multicast, flooding) is + handled in hardware and the bridge driver will transmit a single skb for each + packet that needs replication. The method is provided as a configuration + point for drivers that need to configure the hardware for enabling this + feature. + +- ``port_bridge_tx_fwd_unoffload``: bridge layer function invoken when a driver + leaves a bridge port which had the TX forwarding offload feature enabled. + Bridge VLAN filtering ---------------------