From patchwork Wed Mar 16 15:08:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Waldekranz X-Patchwork-Id: 12782827 X-Patchwork-Delegate: kuba@kernel.org 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 C1DB3C433FE for ; Wed, 16 Mar 2022 15:10:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357164AbiCPPLi (ORCPT ); Wed, 16 Mar 2022 11:11:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357083AbiCPPLL (ORCPT ); Wed, 16 Mar 2022 11:11:11 -0400 Received: from mail-lf1-x136.google.com (mail-lf1-x136.google.com [IPv6:2a00:1450:4864:20::136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 41C4968F89 for ; Wed, 16 Mar 2022 08:09:20 -0700 (PDT) Received: by mail-lf1-x136.google.com with SMTP id w12so4228882lfr.9 for ; Wed, 16 Mar 2022 08:09:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=waldekranz-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:organization:content-transfer-encoding; bh=mgkeZq+OzQVdtsS30MEyH+ERcJSrmRmksLXcxdMjf7o=; b=fkiGS9qHxMimtRvEchwSzZ2jueyhtJtAtzgrkx2f2e393BLo72s0z/qODDkKBfl8pV a0zdL2drg0SrGKGUTxr2CeR2A6RF/usZgVO699hYu1L+sI41kZMXkXzsZuGNuXH3qniH eXk/OZwhs7zxmw32VcP2+gJOFfy1xlVn8vnkkIcMh7kpBWms6f6FdBFa5RE2rUj30lIj UaCrqS1nbP9fD37cbqUGVLTCGn+wrU4mMK/gL+tLytce2B4uwajUkdRWFmzui17xLV1C w9M8fErF9lqUH44BZPuPbugsD5/xZcNU2bWHlVzMeBdql2ogoX8UmDrS0nKcdVAMS/Qi qVSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:organization:content-transfer-encoding; bh=mgkeZq+OzQVdtsS30MEyH+ERcJSrmRmksLXcxdMjf7o=; b=w+vy1KXE4FiJRpdgD0yHnIn7XW9u1hGHU6Ti1YYC3vIqDu4k8ESsma10tg/PFUrb0Y b0rwi04y6m+LO4LCxBpKP8aA9+gBzms4SBRvE+tfPFdYu/1q9HGQ2xGPuYO4Qi+94d2E xz8GY0PQMLs+SANtWsOVZ/uzpSSW0h7Q3cEiv8RDADTI7st7RBfVivcORsEwNAk4poOB 7+LDjqa66OBYNCnQXtuta7xB5/IQsCOGWVGzJpA5Y7fezzXW0q2uqaoIKmb+Ymys1gFd COl3jgcukLcH/lA+QVAtaMZSvcPT5M76/+Qq0SNlKngP4u0HyVHoigXZrzJU2gedgVFX 5qFA== X-Gm-Message-State: AOAM532Tdryugsabt/K2PPxAlcLRkDamx8SHQPQf/yNb9v9bduvzojRY oZbqAEEbIQj8Aqqpe3zm7BAIxQ== X-Google-Smtp-Source: ABdhPJzgHn4kNmZ5ZseCg9IJdp341pFqp8Ltk6FUvX4LMIx0gOz2T29a0OBPlfe5RGVcpbGUvWEKHA== X-Received: by 2002:a05:6512:246:b0:448:24d4:e69f with SMTP id b6-20020a056512024600b0044824d4e69fmr108707lfo.66.1647443358362; Wed, 16 Mar 2022 08:09:18 -0700 (PDT) Received: from veiron.westermo.com (static-193-12-47-89.cust.tele2.se. [193.12.47.89]) by smtp.gmail.com with ESMTPSA id d2-20020a194f02000000b00448b915e2d3sm176048lfb.99.2022.03.16.08.09.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Mar 2022 08:09:17 -0700 (PDT) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , Jiri Pirko , Ivan Vecera , Roopa Prabhu , Nikolay Aleksandrov , Russell King , Petr Machata , Ido Schimmel , Matt Johnston , Cooper Lees , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bridge@lists.linux-foundation.org Subject: [PATCH v5 net-next 12/15] net: dsa: Handle MST state changes Date: Wed, 16 Mar 2022 16:08:54 +0100 Message-Id: <20220316150857.2442916-13-tobias@waldekranz.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220316150857.2442916-1-tobias@waldekranz.com> References: <20220316150857.2442916-1-tobias@waldekranz.com> MIME-Version: 1.0 Organization: Westermo Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Add the usual trampoline functionality from the generic DSA layer down to the drivers for MST state changes. When a state changes to disabled/blocking/listening, make sure to fast age any dynamic entries in the affected VLANs (those controlled by the MSTI in question). Signed-off-by: Tobias Waldekranz Reviewed-by: Vladimir Oltean --- include/net/dsa.h | 3 ++ net/dsa/dsa_priv.h | 3 ++ net/dsa/port.c | 85 +++++++++++++++++++++++++++++++++++++++++----- net/dsa/slave.c | 6 ++++ 4 files changed, 89 insertions(+), 8 deletions(-) diff --git a/include/net/dsa.h b/include/net/dsa.h index 644fda2293a2..06cdefd3b9dd 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -957,7 +957,10 @@ struct dsa_switch_ops { struct dsa_bridge bridge); void (*port_stp_state_set)(struct dsa_switch *ds, int port, u8 state); + int (*port_mst_state_set)(struct dsa_switch *ds, int port, + const struct switchdev_mst_state *state); void (*port_fast_age)(struct dsa_switch *ds, int port); + int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, struct switchdev_brport_flags flags, struct netlink_ext_ack *extack); diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index d90b4cf0c9d2..5d3f4a67dce1 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -215,6 +215,9 @@ static inline struct net_device *dsa_master_find_slave(struct net_device *dev, void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, const struct dsa_device_ops *tag_ops); int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age); +int dsa_port_set_mst_state(struct dsa_port *dp, + const struct switchdev_mst_state *state, + struct netlink_ext_ack *extack); int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy); int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy); void dsa_port_disable_rt(struct dsa_port *dp); diff --git a/net/dsa/port.c b/net/dsa/port.c index 3ac114f6fc22..32d472a82241 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -30,12 +30,11 @@ static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v) return dsa_tree_notify(dp->ds->dst, e, v); } -static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp) +static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp, u16 vid) { struct net_device *brport_dev = dsa_port_to_bridge_port(dp); struct switchdev_notifier_fdb_info info = { - /* flush all VLANs */ - .vid = 0, + .vid = vid, }; /* When the port becomes standalone it has already left the bridge. @@ -57,7 +56,42 @@ static void dsa_port_fast_age(const struct dsa_port *dp) ds->ops->port_fast_age(ds, dp->index); - dsa_port_notify_bridge_fdb_flush(dp); + /* flush all VLANs */ + dsa_port_notify_bridge_fdb_flush(dp, 0); +} + +static int dsa_port_vlan_fast_age(const struct dsa_port *dp, u16 vid) +{ + struct dsa_switch *ds = dp->ds; + int err; + + if (!ds->ops->port_vlan_fast_age) + return -EOPNOTSUPP; + + err = ds->ops->port_vlan_fast_age(ds, dp->index, vid); + + if (!err) + dsa_port_notify_bridge_fdb_flush(dp, vid); + + return err; +} + +static int dsa_port_msti_fast_age(const struct dsa_port *dp, u16 msti) +{ + DECLARE_BITMAP(vids, VLAN_N_VID) = { 0 }; + int err, vid; + + err = br_mst_get_info(dsa_port_bridge_dev_get(dp), msti, vids); + if (err) + return err; + + for_each_set_bit(vid, vids, VLAN_N_VID) { + err = dsa_port_vlan_fast_age(dp, vid); + if (err) + return err; + } + + return 0; } static bool dsa_port_can_configure_learning(struct dsa_port *dp) @@ -118,6 +152,42 @@ static void dsa_port_set_state_now(struct dsa_port *dp, u8 state, pr_err("DSA: failed to set STP state %u (%d)\n", state, err); } +int dsa_port_set_mst_state(struct dsa_port *dp, + const struct switchdev_mst_state *state, + struct netlink_ext_ack *extack) +{ + struct dsa_switch *ds = dp->ds; + u8 prev_state; + int err; + + if (!ds->ops->port_mst_state_set) + return -EOPNOTSUPP; + + err = br_mst_get_state(dsa_port_to_bridge_port(dp), state->msti, + &prev_state); + if (err) + return err; + + err = ds->ops->port_mst_state_set(ds, dp->index, state); + if (err) + return err; + + if (!(dp->learning && + (prev_state == BR_STATE_LEARNING || + prev_state == BR_STATE_FORWARDING) && + (state->state == BR_STATE_DISABLED || + state->state == BR_STATE_BLOCKING || + state->state == BR_STATE_LISTENING))) + return 0; + + err = dsa_port_msti_fast_age(dp, state->msti); + if (err) + NL_SET_ERR_MSG_MOD(extack, + "Unable to flush associated VLANs"); + + return 0; +} + int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) { struct dsa_switch *ds = dp->ds; @@ -326,6 +396,8 @@ static bool dsa_port_supports_mst(struct dsa_port *dp) struct dsa_switch *ds = dp->ds; return ds->ops->vlan_msti_set && + ds->ops->port_mst_state_set && + ds->ops->port_vlan_fast_age && dsa_port_can_configure_learning(dp); } @@ -749,10 +821,7 @@ int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) int dsa_port_mst_enable(struct dsa_port *dp, bool on, struct netlink_ext_ack *extack) { - if (!on) - return 0; - - if (!dsa_port_supports_mst(dp)) { + if (on && !dsa_port_supports_mst(dp)) { NL_SET_ERR_MSG_MOD(extack, "Hardware does not support MST"); return -EINVAL; } diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 1b3e792d0327..17615b706359 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -451,6 +451,12 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx, ret = dsa_port_set_state(dp, attr->u.stp_state, true); break; + case SWITCHDEV_ATTR_ID_PORT_MST_STATE: + if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev)) + return -EOPNOTSUPP; + + ret = dsa_port_set_mst_state(dp, &attr->u.mst_state, extack); + break; case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: if (!dsa_port_offloads_bridge_dev(dp, attr->orig_dev)) return -EOPNOTSUPP;