From 7ae9147f4312903b97eae231c48571bbd95dc63f Mon Sep 17 00:00:00 2001 From: Tobias Waldekranz Date: Wed, 16 Mar 2022 16:08:48 +0100 Subject: net: bridge: mst: Notify switchdev drivers of MST state changes 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 Acked-by: Nikolay Aleksandrov Signed-off-by: Jakub Kicinski --- net/bridge/br_mst.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'net/bridge/br_mst.c') diff --git a/net/bridge/br_mst.c b/net/bridge/br_mst.c index 29266174e6b4..00935a19afcc 100644 --- a/net/bridge/br_mst.c +++ b/net/bridge/br_mst.c @@ -30,13 +30,31 @@ static void br_mst_vlan_set_state(struct net_bridge_port *p, struct net_bridge_v int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state, struct netlink_ext_ack *extack) { + struct switchdev_attr attr = { + .id = SWITCHDEV_ATTR_ID_PORT_MST_STATE, + .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) return 0; + /* MSTI 0 (CST) state changes are notified via the regular + * SWITCHDEV_ATTR_ID_PORT_STP_STATE. + */ + if (msti) { + err = switchdev_port_attr_set(p->dev, &attr, extack); + if (err && err != -EOPNOTSUPP) + return err; + } + list_for_each_entry(v, &vg->vlan_list, vlist) { if (v->brvlan->msti != msti) continue; -- cgit v1.2.3