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 2EAFBC61DA4 for ; Tue, 14 Feb 2023 10:42:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231896AbjBNKmA (ORCPT ); Tue, 14 Feb 2023 05:42:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229478AbjBNKlb (ORCPT ); Tue, 14 Feb 2023 05:41:31 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D98AE25E2B; Tue, 14 Feb 2023 02:41:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1676371266; x=1707907266; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=e1mnShQAa1T1MjAsWoZ1kSb7/9+7Gmh5X558Qs7HZWA=; b=ISCWc2WvCXLOebAPIYPx4z/IAkb5luTSm+SzaKTTMm5p3GMf8aVf3olM qGHld6d8ljnSQguk3cEgWP/8mS9S/FbVJgVnR3f2CCEa3pNXhNi0aMdwx LYZ2a6myx7yQtT0ExTZjreN533LJLv8TaOY5TAHIAdHL1rTh0OWNFw3kW 0DElPI+QZcJUb+aiElVf5wiYjN77Dz1IrFjW64XaOZSF09eqolfXKAQOE vIAqFklcvelUpZbs2D0zXqvGmDFwj4GtuXrVtxeSiisJtmt5gwb2k5Wt/ 5rtLjBJNHwjPjoE5jE+X6i/HFCsjVVRk4AKvhOLegEYlpaoOTjvVFlrwc A==; X-IronPort-AV: E=Sophos;i="5.97,296,1669100400"; d="scan'208";a="200417801" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 14 Feb 2023 03:40:59 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Tue, 14 Feb 2023 03:40:59 -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; Tue, 14 Feb 2023 03:40:55 -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 v2 01/10] net: microchip: sparx5: Discard frames with SMAC multicast addresses Date: Tue, 14 Feb 2023 11:40:40 +0100 Message-ID: <20230214104049.1553059-2-steen.hegelund@microchip.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230214104049.1553059-1-steen.hegelund@microchip.com> References: <20230214104049.1553059-1-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