From patchwork Mon Mar 29 10:09:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 411206 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 42C8CC433E5 for ; Mon, 29 Mar 2021 10:11:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2597361970 for ; Mon, 29 Mar 2021 10:11:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232636AbhC2KKw (ORCPT ); Mon, 29 Mar 2021 06:10:52 -0400 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:42213 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231458AbhC2KKc (ORCPT ); Mon, 29 Mar 2021 06:10:32 -0400 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 116D55C00E4; Mon, 29 Mar 2021 06:10:32 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 29 Mar 2021 06:10:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=EaPacVoh3hPlgbKrRlCUm3njb1vtkHSZBb0UgoLIRM0=; b=Hvy1DYQg N11u40ytGbgSFa1xiPgEg6qZvAKtQP3+evUMntZGd7qu+qdcALh33h02mK9A1lB1 +an6Xe+wFJtLqVacYtlO7DsnKNDiBZk/5VMUJPHp+BjF1RCvc5AtcdkUXit3xDGG i64zpX4NiDWZ/8KQIeZaNhxBTkH2DAn9l7tMNpDUUoTyS2vx3kxN0ygf7etqF1Kg tKrzibCyZB4xwFeTRqp7bUHEK3GQoQ8LeeSQeJ4LO/Pe4WXBN+1XVQ76+AvUsluw AEtEZwg84bArDTrWcdFOuiwZmKPN4s1CDl/chXgkImjrttABXt+Q1zXc9+jYEoPN QCbetrfv9L+42Q== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrudehkedgvdehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofgjfhgggfestdekre dtredttdenucfhrhhomhepkfguohcuufgthhhimhhmvghluceoihguohhstghhsehiugho shgthhdrohhrgheqnecuggftrfgrthhtvghrnhepudetieevffffveelkeeljeffkefhke ehgfdtffethfelvdejgffghefgveejkefhnecukfhppeekgedrvddvledrudehfedrgeeg necuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehmrghilhhfrhhomhepihguoh hstghhsehiughoshgthhdrohhrgh X-ME-Proxy: Received: from shredder.mellanox.com (igld-84-229-153-44.inter.net.il [84.229.153.44]) by mail.messagingengine.com (Postfix) with ESMTPA id A3478240054; Mon, 29 Mar 2021 06:10:30 -0400 (EDT) From: Ido Schimmel To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, jiri@nvidia.com, mlxsw@nvidia.com, Ido Schimmel Subject: [PATCH net-next 5/6] mlxsw: spectrum: Veto sampling if already enabled on port Date: Mon, 29 Mar 2021 13:09:47 +0300 Message-Id: <20210329100948.355486-6-idosch@idosch.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210329100948.355486-1-idosch@idosch.org> References: <20210329100948.355486-1-idosch@idosch.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ido Schimmel The per-port sampling triggers (i.e., ingress / egress) cannot be enabled twice. Meaning, the below configuration will not result in packets being sampled twice: # tc filter add dev swp1 ingress matchall skip_sw action sample rate 100 group 1 # tc filter add dev swp1 ingress matchall skip_sw action sample rate 100 group 1 Therefore, reject such configurations. Fixes: 90f53c53ec4a ("mlxsw: spectrum: Start using sampling triggers hash table") Signed-off-by: Ido Schimmel Reviewed-by: Jiri Pirko --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index efc7acb4842c..bca0354482cb 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2668,6 +2668,11 @@ mlxsw_sp_sample_trigger_params_set(struct mlxsw_sp *mlxsw_sp, return mlxsw_sp_sample_trigger_node_init(mlxsw_sp, &key, params); + if (trigger_node->trigger.local_port) { + NL_SET_ERR_MSG_MOD(extack, "Sampling already enabled on port"); + return -EINVAL; + } + if (trigger_node->params.psample_group != params->psample_group || trigger_node->params.truncate != params->truncate || trigger_node->params.rate != params->rate ||