From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 690A1C433DF for ; Thu, 20 Aug 2020 11:43:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43CF4208E4 for ; Thu, 20 Aug 2020 11:43:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597923793; bh=4OyUkUq0Yh9CrZVM8PSEZCcsieoLIBoIWas0+E+tPIU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xmqDItdGRJR44I3RNknpZ8Dkucj/urEPa31o8S7pakz4ddB6sI2JxTEMdp+Ip0Abj XU9Aylx5Z0OMAwoomEpFQrlHR37gEjd6lHwvZ88KTSMGSltDyzSZU4tWMDabod/pET MvcWRMrLdM2DvAxBqYBnRfNLWldKDHnEE+qe8mig= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730793AbgHTLnJ (ORCPT ); Thu, 20 Aug 2020 07:43:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:57462 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728967AbgHTKED (ORCPT ); Thu, 20 Aug 2020 06:04:03 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 92C172075E; Thu, 20 Aug 2020 10:04:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597917843; bh=4OyUkUq0Yh9CrZVM8PSEZCcsieoLIBoIWas0+E+tPIU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EN228vdV+JACKSNqznYq5vYUjSi9N7HSP6l6zuYXgaFbfiJLqOp0hIpEbEhMzSReQ s/m+VOcKSWn8y+GaoV42Y9RXjT/xxtEeBDgL52BHbBGwsNTkeRr2bWCCJnbu1iZEpz E7uc3lzNSRbPfiIV2Ro9K3plWT0EaKF8xW5uswW8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan McDowell , "David S. Miller" Subject: [PATCH 4.9 178/212] net: stmmac: dwmac1000: provide multicast filter fallback Date: Thu, 20 Aug 2020 11:22:31 +0200 Message-Id: <20200820091611.380234529@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091602.251285210@linuxfoundation.org> References: <20200820091602.251285210@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonathan McDowell commit 592d751c1e174df5ff219946908b005eb48934b3 upstream. If we don't have a hardware multicast filter available then instead of silently failing to listen for the requested ethernet broadcast addresses fall back to receiving all multicast packets, in a similar fashion to other drivers with no multicast filter. Cc: stable@vger.kernel.org Signed-off-by: Jonathan McDowell Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -172,6 +172,9 @@ static void dwmac1000_set_filter(struct value = GMAC_FRAME_FILTER_PR; } else if (dev->flags & IFF_ALLMULTI) { value = GMAC_FRAME_FILTER_PM; /* pass all multi */ + } else if (!netdev_mc_empty(dev) && (mcbitslog2 == 0)) { + /* Fall back to all multicast if we've no filter */ + value = GMAC_FRAME_FILTER_PM; } else if (!netdev_mc_empty(dev)) { struct netdev_hw_addr *ha;