From patchwork Mon Nov 23 07:12:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 11924467 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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 34776C2D0E4 for ; Mon, 23 Nov 2020 07:14:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C8FC920727 for ; Mon, 23 Nov 2020 07:14:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726921AbgKWHOH (ORCPT ); Mon, 23 Nov 2020 02:14:07 -0500 Received: from wout5-smtp.messagingengine.com ([64.147.123.21]:51765 "EHLO wout5-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726051AbgKWHOH (ORCPT ); Mon, 23 Nov 2020 02:14:07 -0500 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id 33EBFF40; Mon, 23 Nov 2020 02:14:06 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 23 Nov 2020 02:14:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :message-id:mime-version:subject:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=097UPPkWIyX64kjGB yJnypJ2lkCFLIbAViTyUaeTTjk=; b=c/g2lNqlccbTjTWglP4L3FyIIKCvS9VNG OoAULtN2Xp7eVnRLkSJwMjpLLHX2H00d+frE0clFJqT3fXEcenFytdbVz9f65y7R ejXce8ZqGTQY+MOJopo0Lcn8p+vQzXDG4VfrqHvML8CiFRwHIe3XAaVh5AkgTTq8 ZknIyeqRKA3f/XIZyDQH0NqiUvGtTaUweReaQL2evPK1/Nb//KFTWbDzposxIKt7 ODPBmKEvR37PHjUGR5I9kwfz8yywKcXcpUJIr+AX0MytwVug5e2gcB3Aq0Tfu6y3 c1wCyO1XBPRCqRKtN7pPpV2B3z9Patmgnm3C6T+bozdusKQMeZ0Dw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrudeghedguddtvdcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffoggfgsedtkeertd ertddtnecuhfhrohhmpefkughoucfutghhihhmmhgvlhcuoehiughoshgthhesihguohhs tghhrdhorhhgqeenucggtffrrghtthgvrhhnpeetveeghfevgffgffekueffuedvhfeuhe ehteffieekgeehveefvdegledvffduhfenucfkphepkeegrddvvdelrdduheegrddugeej necuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepihguoh hstghhsehiughoshgthhdrohhrgh X-ME-Proxy: Received: from shredder.lan (igld-84-229-154-147.inter.net.il [84.229.154.147]) by mail.messagingengine.com (Postfix) with ESMTPA id 38A643280060; Mon, 23 Nov 2020 02:14:04 -0500 (EST) From: Ido Schimmel To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, jiri@nvidia.com, dsahern@gmail.com, mlxsw@nvidia.com, Ido Schimmel Subject: [PATCH net-next 00/10] mlxsw: Add support for blackhole nexthops Date: Mon, 23 Nov 2020 09:12:20 +0200 Message-Id: <20201123071230.676469-1-idosch@idosch.org> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Ido Schimmel This patch set adds support for blackhole nexthops in mlxsw. These nexthops are exactly the same as other nexthops, but instead of forwarding packets to an egress router interface (RIF), they are programmed to silently drop them. Patches #1-#4 are preparations. Patch #5 adds support for blackhole nexthops and removes the check that prevented them from being programmed. Patch #6 adds a selftests over mlxsw which tests that blackhole nexthops can be programmed and are marked as offloaded. Patch #7 extends the existing nexthop forwarding test to also test blackhole functionality. Patches #8-#10 add support for a new packet trap ('blackhole_nexthop') which should be triggered whenever packets are dropped by a blackhole nexthop. Obviously, by default, the trap action is set to 'drop' so that dropped packets will not be reported. Ido Schimmel (10): mlxsw: spectrum_router: Create loopback RIF during initialization mlxsw: spectrum_router: Use different trap identifier for unresolved nexthops mlxsw: spectrum_router: Use loopback RIF for unresolved nexthops mlxsw: spectrum_router: Resolve RIF from nexthop struct instead of neighbour mlxsw: spectrum_router: Add support for blackhole nexthops selftests: mlxsw: Add blackhole nexthop configuration tests selftests: forwarding: Add blackhole nexthops tests devlink: Add blackhole_nexthop trap mlxsw: spectrum_trap: Add blackhole_nexthop trap selftests: mlxsw: Add blackhole_nexthop trap test .../networking/devlink/devlink-trap.rst | 4 + .../ethernet/mellanox/mlxsw/spectrum_dpipe.c | 9 +- .../ethernet/mellanox/mlxsw/spectrum_router.c | 92 ++++++++++++++++--- .../ethernet/mellanox/mlxsw/spectrum_router.h | 2 + .../ethernet/mellanox/mlxsw/spectrum_trap.c | 8 +- drivers/net/ethernet/mellanox/mlxsw/trap.h | 1 + include/net/devlink.h | 4 +- net/core/devlink.c | 1 + .../net/mlxsw/devlink_trap_l3_drops.sh | 36 ++++++++ .../selftests/drivers/net/mlxsw/rtnetlink.sh | 25 ++++- .../net/forwarding/router_mpath_nh.sh | 58 +++++++++++- 11 files changed, 218 insertions(+), 22 deletions(-)