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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 EE840C433DF for ; Mon, 8 Jun 2020 23:54:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D183F20737 for ; Mon, 8 Jun 2020 23:54:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591660469; bh=F2UQ3f/EJyLX8uuLRDqCa52FwSXPHX2BTvdYFegJOio=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=hTJ6AIy3WExyD4z+4H048FYeHm7iWEiQZ97dKVd2vJvxOtMyPTQO1fazrW/MINS+4 5rPnS1v25LWWENcUYzfHV13dMrYhrT3OIeXLALIG8t2VaEDxizagrKkBkXR3Vw5uNZ x0UGAc7yBkw9bBrpKMxqYe9Uf3UXwDmuQDzm4WO0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732727AbgFHXyZ (ORCPT ); Mon, 8 Jun 2020 19:54:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:50254 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727045AbgFHXYP (ORCPT ); Mon, 8 Jun 2020 19:24:15 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7F3F12074B; Mon, 8 Jun 2020 23:24:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591658655; bh=F2UQ3f/EJyLX8uuLRDqCa52FwSXPHX2BTvdYFegJOio=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i9+qSicAo2zEcve4uB7nPflL65Ypx3DeaYT5wZetPTkZ6YfYxg3lRL7DRw2JOepfW T/X/xrlpsypTWY++jM+8dwuV2Yh9+wqAdRENLxSEwKJl3iEAAxTKkvEt8pR3CGbUiH hRb3c208abLzBJO4t8+N5iO3BZNam6PKGq/ENA7c= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: DENG Qingfang , Florian Fainelli , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 073/106] net: dsa: mt7530: set CPU port to fallback mode Date: Mon, 8 Jun 2020 19:22:05 -0400 Message-Id: <20200608232238.3368589-73-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608232238.3368589-1-sashal@kernel.org> References: <20200608232238.3368589-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: DENG Qingfang [ Upstream commit 38152ea37d8bdaffa22603e0a5b5b86cfa8714c9 ] Currently, setting a bridge's self PVID to other value and deleting the default VID 1 renders untagged ports of that VLAN unable to talk to the CPU port: bridge vlan add dev br0 vid 2 pvid untagged self bridge vlan del dev br0 vid 1 self bridge vlan add dev sw0p0 vid 2 pvid untagged bridge vlan del dev sw0p0 vid 1 # br0 cannot send untagged frames out of sw0p0 anymore That is because the CPU port is set to security mode and its PVID is still 1, and untagged frames are dropped due to VLAN member violation. Set the CPU port to fallback mode so untagged frames can pass through. Fixes: 83163f7dca56 ("net: dsa: mediatek: add VLAN support for MT7530") Signed-off-by: DENG Qingfang Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/dsa/mt7530.c | 11 ++++++++--- drivers/net/dsa/mt7530.h | 6 ++++++ 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 8b39a211ecb6..616afd81536a 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -860,10 +860,15 @@ mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port) PCR_MATRIX_MASK, PCR_MATRIX(MT7530_ALL_MEMBERS)); /* Trapped into security mode allows packet forwarding through VLAN - * table lookup. + * table lookup. CPU port is set to fallback mode to let untagged + * frames pass through. */ - mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, - MT7530_PORT_SECURITY_MODE); + if (dsa_is_cpu_port(ds, port)) + mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, + MT7530_PORT_FALLBACK_MODE); + else + mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, + MT7530_PORT_SECURITY_MODE); /* Set the port as a user port which is to be able to recognize VID * from incoming packets before fetching entry within the VLAN table. diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h index 403adbe5a4b4..101d309ee445 100644 --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -148,6 +148,12 @@ enum mt7530_port_mode { /* Port Matrix Mode: Frames are forwarded by the PCR_MATRIX members. */ MT7530_PORT_MATRIX_MODE = PORT_VLAN(0), + /* Fallback Mode: Forward received frames with ingress ports that do + * not belong to the VLAN member. Frames whose VID is not listed on + * the VLAN table are forwarded by the PCR_MATRIX members. + */ + MT7530_PORT_FALLBACK_MODE = PORT_VLAN(1), + /* Security Mode: Discard any frame due to ingress membership * violation or VID missed on the VLAN table. */ -- 2.25.1