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Mon, 11 Jul 2022 11:28:37 +0000 From: Oleksandr Mazur To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, oleksandr.mazur@plvision.eu, tchornyi@marvell.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, lkp@intel.com, Yevhen Orlov Subject: [PATCH V5 net-next 0/4] net: marvell: prestera: add MDB offloading support Date: Mon, 11 Jul 2022 14:28:18 +0300 Message-Id: <20220711112822.13725-1-oleksandr.mazur@plvision.eu> X-Mailer: git-send-email 2.17.1 X-ClientProxiedBy: FR3P281CA0080.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:1f::15) To GV1P190MB2019.EURP190.PROD.OUTLOOK.COM (2603:10a6:150:5b::20) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 258df90a-f1bb-4106-be72-08da63307f9c X-MS-TrafficTypeDiagnostic: HE1P190MB0331:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:GV1P190MB2019.EURP190.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230016)(4636009)(396003)(39840400004)(346002)(376002)(366004)(136003)(41300700001)(6486002)(52116002)(6916009)(6666004)(6506007)(107886003)(316002)(186003)(478600001)(26005)(1076003)(66574015)(2616005)(83380400001)(38350700002)(4326008)(6512007)(66476007)(5660300002)(8936002)(66556008)(2906002)(66946007)(8676002)(38100700002)(86362001)(36756003)(44832011);DIR:OUT;SFP:1102; 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It's used to propagate IGMP groups registered within the Kernel to the underlying HW (offload registered groups). Features: - define (and implement) main internal MDB-related objects; - define (and implement) main HW APIs for MDB handling; - add MDB handling support for both regular ports as well as Bond interfaces; - Mirrored behavior of Bridge driver upon multicast router appearance (all traffic flooded when there's no mcast router; mcast router receives all mcast traffic, and only group-specific registered mcast traffic is being received by ports who've explicitly joined any group when there's a registered mcast router); - Reworked prestera driver bridge flags (especially multicast) setting - thus making it possible to react over mcast disabled messages properly by offloading this state to the underlying HW (disabling multicast flooding); Limitations: - Not full (partial) IGMPv3 support (due to limited switchdev notification capabilities: MDB events are being propagated only with a single MAC entry, while IGMPv3 has Group-Specific requests and responses); - It's possible that multiple IP groups would receive traffic from other groups, as MDB events are being propagated with a single MAC entry, which makes it possible to map a few IPs over same MAC; Co-developed-by: Yevhen Orlov Signed-off-by: Yevhen Orlov Signed-off-by: Oleksandr Mazur PATCH V5: - fix checkpatch errors (4/4). - remove function forward declarations, and move function implementations to match the removed forward declarations (4/4). - rebased changes on top of latest master. PATCH V4: - fix clang warning - var uninitialized when used. PATCH V3: - add missing function implementations to 2/4 (HW API implementation), only definitions were added int V1, V2, and implementation waas missed by mistake. Reported-by: kernel test robot - fix compiletime warning (unused variable) PATCH V2: - include all the patches of patch series (V1's been sent to closed net-next, also had not all patches included); Oleksandr Mazur (4): net: marvell: prestera: rework bridge flags setting net: marvell: prestera: define MDB/flood domain entries and HW API to offload them to the HW net: marvell: prestera: define and implement MDB / flood domain API for entries creation and deletion net: marvell: prestera: implement software MDB entries allocation .../net/ethernet/marvell/prestera/prestera.h | 47 ++ .../ethernet/marvell/prestera/prestera_hw.c | 256 +++++-- .../ethernet/marvell/prestera/prestera_hw.h | 15 +- .../ethernet/marvell/prestera/prestera_main.c | 191 +++++ .../marvell/prestera/prestera_switchdev.c | 706 +++++++++++++++++- 5 files changed, 1124 insertions(+), 91 deletions(-)