From patchwork Sun May 23 14:48:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qingfang Deng X-Patchwork-Id: 446391 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 46898C47080 for ; Sun, 23 May 2021 14:48:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 149926023B for ; Sun, 23 May 2021 14:48:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231833AbhEWOtp (ORCPT ); Sun, 23 May 2021 10:49:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231776AbhEWOto (ORCPT ); Sun, 23 May 2021 10:49:44 -0400 Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9F73C061574; Sun, 23 May 2021 07:48:17 -0700 (PDT) Received: by mail-pf1-x42f.google.com with SMTP id x18so14423112pfi.9; Sun, 23 May 2021 07:48:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=GZwfWA295f4RDy0ynim7ZMzb4wqY1p6Zq0kG2VoTpAE=; b=c5hXx0ag+I0Eo1OJnDvaIBjDcGZJaN182tT260aS51zpQPAMbhzfQo7qyqEcPrNEnz eY/HfKglB2mty/ApboIWW4ll9QPziWY0hWaBTqzsgnOij3lek2DJrXYzZfNt1N2wGXjI ktqwZuFT8HDHKBkx6NOe7JlLsvmMPSzXoB9Ib75BkSlCTnCS4zlG0lHmdEtqg4piH0QH /bRuXJbyjcov6p6hJhusqFCmC01E+njhjv+DggceHdaH9uhAsI/kXd5JSnR+Qm6O+2tK RIfvfVVRXIT+prQctxvHub6Wp3uO99PQWjzyNl7YhAmFiphu9kgS/ItxLR0I41j5MlRj 4tJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=GZwfWA295f4RDy0ynim7ZMzb4wqY1p6Zq0kG2VoTpAE=; b=WmQ6SxTkLq4yBaeRvFhBwm+IoJTNdsJxGlfNVPBBAfEiJKYbhn5264xxI0Iw79rtVu nLQ0jCc0Dz82YeDFrNq0qs+Ki+cRhTnlf06Gk91A0afqyQavw8sIsK3PakqE7C06T105 bnBvU0vZilYBMX3GKijdbgZreHQ7H4dE73tOX+as5pC7yvxxzz5pQO35Z/L5WypedN3x oqEGuJgNaRUB3y0zYrwX1qlfBUr8z3Lc9GvezF81FF1hieEdcjFji5cNnE9YKDnz9P61 JcfKx7YnYtFjR7JZ1ykJOzURasICtpkCGlxzw0gxKK/ZJB5hpTiiCKdwl8uatiUH1E2A Fq6A== X-Gm-Message-State: AOAM533J/1htYca791dLuO1DY/JfEpfdnRQm5wMgS1GwsmRVz/0tLIn9 JHIdTWcEN6yX+5GEqm99agkiDALwYIagyspe X-Google-Smtp-Source: ABdhPJxF8YEU2dKbvt0JNgX6XHdlIGKAdfT+F6rHY98QI/DUtNusVcifD3jweNS2zhBHr+m7NE98JA== X-Received: by 2002:a63:db17:: with SMTP id e23mr8933915pgg.274.1621781297422; Sun, 23 May 2021 07:48:17 -0700 (PDT) Received: from localhost.localdomain ([138.197.212.246]) by smtp.gmail.com with ESMTPSA id c7sm9341162pga.4.2021.05.23.07.48.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 May 2021 07:48:16 -0700 (PDT) From: DENG Qingfang To: Sean Wang , Landen Chao , Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Jakub Kicinski , Matthias Brugger , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Frank Wunderlich Subject: [PATCH net] net: dsa: mt7530: fix VLAN traffic leaks Date: Sun, 23 May 2021 22:48:09 +0800 Message-Id: <20210523144809.655056-1-dqfext@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org PCR_MATRIX field was set to all 1's when VLAN filtering is enabled, but was not reset when it is disabled, which may cause traffic leaks: ip link add br0 type bridge vlan_filtering 1 ip link add br1 type bridge vlan_filtering 1 ip link set swp0 master br0 ip link set swp1 master br1 ip link add set type bridge vlan_filtering 0 ip link add set type bridge vlan_filtering 0 # traffic in br0 and br1 will start leaking to each other As port_bridge_{add,del} have set up PCR_MATRIX properly, remove the PCR_MATRIX write from mt7530_port_set_vlan_aware. Fixes: 83163f7dca56 ("net: dsa: mediatek: add VLAN support for MT7530") Signed-off-by: DENG Qingfang Reviewed-by: Florian Fainelli --- drivers/net/dsa/mt7530.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index db838343fb05..93136f7e69f5 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -1273,14 +1273,6 @@ mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port) { struct mt7530_priv *priv = ds->priv; - /* The real fabric path would be decided on the membership in the - * entry of VLAN table. PCR_MATRIX set up here with ALL_MEMBERS - * means potential VLAN can be consisting of certain subset of all - * ports. - */ - mt7530_rmw(priv, MT7530_PCR_P(port), - PCR_MATRIX_MASK, PCR_MATRIX(MT7530_ALL_MEMBERS)); - /* Trapped into security mode allows packet forwarding through VLAN * table lookup. CPU port is set to fallback mode to let untagged * frames pass through.