From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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=yuCZ0mCQ7kvhi5DjalgIG8uPVoVRxyzFJETY+ZZ8iS8=; b=KnpuOsFuuWdfSJ00n5q4w09njAQx7uXq7CpPG8PscWCUNiGj2gQQDMtf2GhNH22mq2 9FRdqeadjDIV6pveBFo1wOtZtuCBHNQCy3XU75fZR0rVf7vypjUiebZ8bk4SGKfsOO1p 1E+6+W2/4VRvWXagQtvFTLpvJnCbm9WOeJL3zGRQph/pfSQFHZMMylkNwbEFp5HkXUi/ ocyVKBw8GVWsod6PiMVH3pf6bl4CaL9nkm7s5ZewI8UZnKW9DRdOaF4/u3p4rH0TrMPa 2n9B/1kLyS5zjb/8En4MmPXVZQ9jGZN3ovow3ZTOFn4hn+l1ut3I2CpiudqjCG/yuJ8z V78w== From: Tobias Waldekranz Date: Tue, 1 Mar 2022 11:03:16 +0100 Message-Id: <20220301100321.951175-6-tobias@waldekranz.com> In-Reply-To: <20220301100321.951175-1-tobias@waldekranz.com> References: <20220301100321.951175-1-tobias@waldekranz.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Bridge] [PATCH v2 net-next 05/10] net: bridge: mst: Notify switchdev drivers of MST state changes List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: davem@davemloft.net, kuba@kernel.org Cc: Ivan Vecera , Andrew Lunn , Florian Fainelli , Jiri Pirko , Petr Machata , Nikolay Aleksandrov , bridge@lists.linux-foundation.org, Russell King , linux-kernel@vger.kernel.org, Ido Schimmel , netdev@vger.kernel.org, Cooper Lees , Roopa Prabhu , Matt Johnston , Vladimir Oltean , Vivien Didelot Generate a switchdev notification whenever an MST state changes. This notification is keyed by the VLANs MSTI rather than the VID, since multiple VLANs may share the same MST instance. Signed-off-by: Tobias Waldekranz --- include/net/switchdev.h | 7 +++++++ net/bridge/br_mst.c | 21 +++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 39e57aa5005a..441beeb2fda5 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -19,6 +19,7 @@ enum switchdev_attr_id { SWITCHDEV_ATTR_ID_UNDEFINED, SWITCHDEV_ATTR_ID_PORT_STP_STATE, + SWITCHDEV_ATTR_ID_PORT_MST_STATE, SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, SWITCHDEV_ATTR_ID_PORT_MROUTER, @@ -31,6 +32,11 @@ enum switchdev_attr_id { SWITCHDEV_ATTR_ID_VLAN_MSTI, }; +struct switchdev_mst_state { + u16 msti; + u8 state; +}; + struct switchdev_brport_flags { unsigned long val; unsigned long mask; @@ -52,6 +58,7 @@ struct switchdev_attr { void (*complete)(struct net_device *dev, int err, void *priv); union { u8 stp_state; /* PORT_STP_STATE */ + struct switchdev_mst_state mst_state; /* PORT_MST_STATE */ struct switchdev_brport_flags brport_flags; /* PORT_BRIDGE_FLAGS */ bool mrouter; /* PORT_MROUTER */ clock_t ageing_time; /* BRIDGE_AGEING_TIME */ diff --git a/net/bridge/br_mst.c b/net/bridge/br_mst.c index aba603675165..9cdd7d9e07c6 100644 --- a/net/bridge/br_mst.c +++ b/net/bridge/br_mst.c @@ -29,8 +29,18 @@ void br_mst_vlan_set_state(struct net_bridge_port *p, struct net_bridge_vlan *v, void br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state) { + struct switchdev_attr attr = { + .id = SWITCHDEV_ATTR_ID_PORT_MST_STATE, + .flags = SWITCHDEV_F_DEFER, + .orig_dev = p->dev, + .u.mst_state = { + .msti = msti, + .state = state, + }, + }; struct net_bridge_vlan_group *vg; struct net_bridge_vlan *v; + int err; vg = nbp_vlan_group(p); if (!vg) @@ -42,6 +52,17 @@ void br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state) br_mst_vlan_set_state(p, v, state); } + + if (!msti) + /* MSTI 0 (CST) state changes are notified via the + * regular SWITCHDEV_ATTR_ID_PORT_STP_STATE. + */ + return; + + err = switchdev_port_attr_set(p->dev, &attr, NULL); + if (err && err != -EOPNOTSUPP) + br_warn(p->br, "unable to offload MST state on %s in MSTI %u", + netdev_name(p->dev), msti); } static void br_mst_vlan_sync_state(struct net_bridge_vlan *pv, u16 msti) -- 2.25.1