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[5.12.16.165]) by smtp.gmail.com with ESMTPSA id q16sm12436933edv.61.2021.03.22.16.52.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Mar 2021 16:52:12 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" Cc: Andrew Lunn , Vivien Didelot , Florian Fainelli , Tobias Waldekranz , Claudiu Manoil , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Roopa Prabhu , Nikolay Aleksandrov , Jiri Pirko , Ido Schimmel , Alexandre Belloni , UNGLinuxDriver@microchip.com, Ivan Vecera , linux-omap@vger.kernel.org, Vladimir Oltean Subject: [PATCH v4 net-next 09/11] net: dsa: sync up switchdev objects and port attributes when joining the bridge Date: Tue, 23 Mar 2021 01:51:50 +0200 Message-Id: <20210322235152.268695-10-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210322235152.268695-1-olteanv@gmail.com> References: <20210322235152.268695-1-olteanv@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Vladimir Oltean If we join an already-created bridge port, such as a bond master interface, then we can miss the initial switchdev notifications emitted by the bridge for this port, while it wasn't offloaded by anybody. Signed-off-by: Vladimir Oltean --- net/dsa/dsa_priv.h | 3 +++ net/dsa/port.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ net/dsa/slave.c | 4 ++-- 3 files changed, 51 insertions(+), 2 deletions(-) diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index b8778c5d8529..92282de54230 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -262,6 +262,9 @@ static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, /* slave.c */ extern const struct dsa_device_ops notag_netdev_ops; +extern struct notifier_block dsa_slave_switchdev_notifier; +extern struct notifier_block dsa_slave_switchdev_blocking_notifier; + void dsa_slave_mii_bus_init(struct dsa_switch *ds); int dsa_slave_create(struct dsa_port *dp); void dsa_slave_destroy(struct net_device *slave_dev); diff --git a/net/dsa/port.c b/net/dsa/port.c index c712bf3da0a0..01e30264b25b 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -170,12 +170,46 @@ static void dsa_port_clear_brport_flags(struct dsa_port *dp) static int dsa_port_switchdev_sync(struct dsa_port *dp, struct netlink_ext_ack *extack) { + struct net_device *brport_dev = dsa_port_to_bridge_port(dp); + struct net_device *br = dp->bridge_dev; int err; err = dsa_port_inherit_brport_flags(dp, extack); if (err) return err; + err = dsa_port_set_state(dp, br_port_get_stp_state(brport_dev)); + if (err && err != -EOPNOTSUPP) + return err; + + err = dsa_port_vlan_filtering(dp, br_vlan_enabled(br), extack); + if (err && err != -EOPNOTSUPP) + return err; + + err = dsa_port_mrouter(dp->cpu_dp, br_multicast_router(br), extack); + if (err && err != -EOPNOTSUPP) + return err; + + err = dsa_port_ageing_time(dp, br_get_ageing_time(br)); + if (err && err != -EOPNOTSUPP) + return err; + + err = br_mdb_replay(br, brport_dev, + &dsa_slave_switchdev_blocking_notifier, + extack); + if (err && err != -EOPNOTSUPP) + return err; + + err = br_fdb_replay(br, brport_dev, &dsa_slave_switchdev_notifier); + if (err && err != -EOPNOTSUPP) + return err; + + err = br_vlan_replay(br, brport_dev, + &dsa_slave_switchdev_blocking_notifier, + extack); + if (err && err != -EOPNOTSUPP) + return err; + return 0; } @@ -198,6 +232,18 @@ static void dsa_port_switchdev_unsync(struct dsa_port *dp) * so allow it to be in BR_STATE_FORWARDING to be kept functional */ dsa_port_set_state_now(dp, BR_STATE_FORWARDING); + + /* VLAN filtering is handled by dsa_switch_bridge_leave */ + + /* Some drivers treat the notification for having a local multicast + * router by allowing multicast to be flooded to the CPU, so we should + * allow this in standalone mode too. + */ + dsa_port_mrouter(dp->cpu_dp, true, NULL); + + /* Ageing time may be global to the switch chip, so don't change it + * here because we have no good reason (or value) to change it to. + */ } int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 1ff48be476bb..c51e52418a62 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -2392,11 +2392,11 @@ static struct notifier_block dsa_slave_nb __read_mostly = { .notifier_call = dsa_slave_netdevice_event, }; -static struct notifier_block dsa_slave_switchdev_notifier = { +struct notifier_block dsa_slave_switchdev_notifier = { .notifier_call = dsa_slave_switchdev_event, }; -static struct notifier_block dsa_slave_switchdev_blocking_notifier = { +struct notifier_block dsa_slave_switchdev_blocking_notifier = { .notifier_call = dsa_slave_switchdev_blocking_event, }; -- 2.25.1