Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1B6AC636CC for ; Mon, 13 Feb 2023 09:25:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229915AbjBMJYx (ORCPT ); Mon, 13 Feb 2023 04:24:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229776AbjBMJYo (ORCPT ); Mon, 13 Feb 2023 04:24:44 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B285CC642; Mon, 13 Feb 2023 01:24:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1676280280; x=1707816280; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=e1mnShQAa1T1MjAsWoZ1kSb7/9+7Gmh5X558Qs7HZWA=; b=eIKEGfzQqiBZG2m+vilZbdHqWny7doKAGSPplPxTktpvgRXuuFd1J/Y4 LY1ffofAj3vuqfCIf82/RWxTeyjBC2q0kKUTaunfh7xSimojLi/ttiWWJ 4IY8adVE8J4dNqR1R9F8dM2I4ugA44eZJ6Ad/g6lSj52KJXGTH3eyhIJo aiHwK0G2zEZXiceKxf1svJLQzwTcqzNNHbgZUHkKgjoxRT4oYpN1esa4R cpxcD+qu1dz9IPvQfWCcrZtRyQrEB5K/URPe4qFuFh7DjpiIFHW7lfuUZ gnj8Wu0UEfL3YvarLVa55lY/WsKKhmrGS5p23CM+3f2qVLEpFO3THAWpk g==; X-IronPort-AV: E=Sophos;i="5.97,293,1669100400"; d="scan'208";a="200397457" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 Feb 2023 02:24:39 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Mon, 13 Feb 2023 02:24:39 -0700 Received: from den-dk-m31857.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.16 via Frontend Transport; Mon, 13 Feb 2023 02:24:35 -0700 From: Steen Hegelund To: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: Steen Hegelund , , Randy Dunlap , "Casper Andersson" , Russell King , Wan Jiabing , "Nathan Huckleberry" , , , , "Steen Hegelund" , Daniel Machon , Horatiu Vultur , Lars Povlsen , Dan Carpenter , Michael Walle Subject: [PATCH net-next 01/10] net: microchip: sparx5: Discard frames with SMAC multicast addresses Date: Mon, 13 Feb 2023 10:24:17 +0100 Message-ID: <20230213092426.1331379-2-steen.hegelund@microchip.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230213092426.1331379-1-steen.hegelund@microchip.com> References: <20230213092426.1331379-1-steen.hegelund@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A valid frame should never use a multicast address as its source MAC address, so discard these invalid frames. Signed-off-by: Steen Hegelund --- drivers/net/ethernet/microchip/sparx5/sparx5_port.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c index 246259b2ae94..3a1b1a1f5a19 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c @@ -1071,6 +1071,11 @@ int sparx5_port_init(struct sparx5 *sparx5, /* Discard pause frame 01-80-C2-00-00-01 */ spx5_wr(PAUSE_DISCARD, sparx5, ANA_CL_CAPTURE_BPDU_CFG(port->portno)); + /* Discard SMAC multicast */ + spx5_rmw(ANA_CL_FILTER_CTRL_FILTER_SMAC_MC_DIS_SET(0), + ANA_CL_FILTER_CTRL_FILTER_SMAC_MC_DIS, + sparx5, ANA_CL_FILTER_CTRL(port->portno)); + if (conf->portmode == PHY_INTERFACE_MODE_QSGMII || conf->portmode == PHY_INTERFACE_MODE_SGMII) { err = sparx5_serdes_set(sparx5, port, conf); -- 2.39.1