[PATCH v5 net-next 04/15] net: bridge: mst: Notify switchdev drivers of MST mode changes
From: Tobias Waldekranz <tobias@waldekranz.com>
Date: 2022-03-16 15:09:50
Also in:
bridge, lkml
Subsystem:
ethernet bridge, networking [general], switchdev, the rest · Maintainers:
Nikolay Aleksandrov, Ido Schimmel, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jiri Pirko, Ivan Vecera, Linus Torvalds
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 <tobias@waldekranz.com> --- include/net/switchdev.h | 2 ++ net/bridge/br_mst.c | 11 +++++++++++ 2 files changed, 13 insertions(+)
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 3e424d40fae3..85dd004dc9ad 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h@@ -27,6 +27,7 @@ enum switchdev_attr_id { SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, + SWITCHDEV_ATTR_ID_BRIDGE_MST, SWITCHDEV_ATTR_ID_MRP_PORT_ROLE, };
@@ -48,6 +49,7 @@ struct switchdev_attr { clock_t ageing_time; /* BRIDGE_AGEING_TIME */ bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */ + bool mst; /* BRIDGE_MST */ bool mc_disabled; /* MC_DISABLED */ u8 mrp_port_role; /* MRP_PORT_ROLE */ } u;
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 <linux/kernel.h> +#include <net/switchdev.h> #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
--
2.25.1