net: dsa: add switch notifier
Add a notifier block per DSA switch, registered against a notifier head
in the switch fabric they belong to.
This infrastructure will allow to propagate fabric-wide events such as
port bridging, VLAN configuration, etc. If a DSA switch driver cares
about cross-chip configuration, such events can be caught.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index beb79cc..22e44f6 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -275,6 +275,10 @@
if (ret < 0)
return ret;
+ ret = dsa_switch_register_notifier(ds);
+ if (ret)
+ return ret;
+
if (ops->set_addr) {
ret = ops->set_addr(ds, dst->master_netdev->dev_addr);
if (ret < 0)
@@ -400,6 +404,8 @@
if (ds->slave_mii_bus && ds->ops->phy_read)
mdiobus_unregister(ds->slave_mii_bus);
+
+ dsa_switch_unregister_notifier(ds);
}
#ifdef CONFIG_PM_SLEEP