From 87c167bb94ee3fd49569d4aa2038b9b8840d906f Mon Sep 17 00:00:00 2001 From: Tobias Waldekranz Date: Wed, 16 Mar 2022 16:08:46 +0100 Subject: net: bridge: mst: Notify switchdev drivers of MST mode changes Trigger a switchdev event whenever the bridge's MST mode is enabled/disabled. This allows constituent ports to either perform any required hardware config, or refuse the change if it not supported. Signed-off-by: Tobias Waldekranz Acked-by: Nikolay Aleksandrov Signed-off-by: Jakub Kicinski --- net/bridge/br_mst.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'net/bridge') diff --git a/net/bridge/br_mst.c b/net/bridge/br_mst.c index 5c1831c73fc2..43ca6b97c5c3 100644 --- a/net/bridge/br_mst.c +++ b/net/bridge/br_mst.c @@ -7,6 +7,7 @@ */ #include +#include #include "br_private.h" @@ -102,8 +103,14 @@ void br_mst_vlan_init_state(struct net_bridge_vlan *v) int br_mst_set_enabled(struct net_bridge *br, bool on, struct netlink_ext_ack *extack) { + struct switchdev_attr attr = { + .id = SWITCHDEV_ATTR_ID_BRIDGE_MST, + .orig_dev = br->dev, + .u.mst = on, + }; struct net_bridge_vlan_group *vg; struct net_bridge_port *p; + int err; list_for_each_entry(p, &br->port_list, list) { vg = nbp_vlan_group(p); @@ -119,6 +126,10 @@ int br_mst_set_enabled(struct net_bridge *br, bool on, if (br_opt_get(br, BROPT_MST_ENABLED) == on) return 0; + err = switchdev_port_attr_set(br->dev, &attr, extack); + if (err && err != -EOPNOTSUPP) + return err; + if (on) static_branch_enable(&br_mst_used); else -- cgit v1.2.3