From patchwork Tue Mar 31 08:57:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 228648 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=-6.9 required=3.0 tests=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=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 8D500C2D0EE for ; Tue, 31 Mar 2020 09:11:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 62CCB2072E for ; Tue, 31 Mar 2020 09:11:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585645863; bh=Ir31/0y8fSK9qMMblVvVjGAsuQJhSa9cPlV8ZpRPg5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ffivb2Bd9ZbQkVwY4qXYq95Lhvmne6c2NieAm58gbrXkO+OmdyrfiSgXYFJu5p9TW BMt41ROzj/3ofFwQJtxaoUj3sZoDce0+KiS6Yh97tzWS/rYoHLzgSgG67H6028qeiD p4Z+dLZeALlk0WQKW2wZQRrLEHodRz+d+8NgSLCY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731657AbgCaJLB (ORCPT ); Tue, 31 Mar 2020 05:11:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:55218 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731655AbgCaJLA (ORCPT ); Tue, 31 Mar 2020 05:11:00 -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 04A112072E; Tue, 31 Mar 2020 09:10:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585645860; bh=Ir31/0y8fSK9qMMblVvVjGAsuQJhSa9cPlV8ZpRPg5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nqgzl7u9/8Y7nafs38pS6JC7XrMXCi6qFl6tjv9Utg2c1pJJkDhW85oYPYN1UXGe5 n2W/dCEhe7a/oKcEC4zAzxwHhBVzSOmG56SVkDu8M5SlTOJdHbpumOQrTJiDCJfO5b ThfozFnlkJUgxq7ipmul/h6em59aVQPjI2iiOMJw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Maxime Bizon , Florian Fainelli , Vivien Didelot , "David S. Miller" Subject: [PATCH 5.4 017/155] net: dsa: Fix duplicate frames flooded by learning Date: Tue, 31 Mar 2020 10:57:37 +0200 Message-Id: <20200331085420.308929573@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200331085418.274292403@linuxfoundation.org> References: <20200331085418.274292403@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Florian Fainelli [ Upstream commit 0e62f543bed03a64495bd2651d4fe1aa4bcb7fe5 ] When both the switch and the bridge are learning about new addresses, switch ports attached to the bridge would see duplicate ARP frames because both entities would attempt to send them. Fixes: 5037d532b83d ("net: dsa: add Broadcom tag RX/TX handler") Reported-by: Maxime Bizon Signed-off-by: Florian Fainelli Reviewed-by: Vivien Didelot Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/dsa/tag_brcm.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/dsa/tag_brcm.c +++ b/net/dsa/tag_brcm.c @@ -140,6 +140,8 @@ static struct sk_buff *brcm_tag_rcv_ll(s /* Remove Broadcom tag and update checksum */ skb_pull_rcsum(skb, BRCM_TAG_LEN); + skb->offload_fwd_mark = 1; + return skb; } #endif