Merge branch 'master' into for-next

Sync with Linus' branch in order to be able to apply fixups
of more recent patches.

1 files changed, 52 insertions, 6 deletions

diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index df4abe897ed6..86c8dc5c32a0 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -52,14 +52,53 @@ static int dsa_switch_ageing_time(struct dsa_switch *ds,
 	return 0;
 }
 
+static bool dsa_switch_mtu_match(struct dsa_switch *ds, int port,
+				 struct dsa_notifier_mtu_info *info)
+{
+	if (ds->index == info->sw_index)
+		return (port == info->port) || dsa_is_dsa_port(ds, port);
+
+	if (!info->propagate_upstream)
+		return false;
+
+	if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
+		return true;
+
+	return false;
+}
+
+static int dsa_switch_mtu(struct dsa_switch *ds,
+			  struct dsa_notifier_mtu_info *info)
+{
+	int port, ret;
+
+	if (!ds->ops->port_change_mtu)
+		return -EOPNOTSUPP;
+
+	for (port = 0; port < ds->num_ports; port++) {
+		if (dsa_switch_mtu_match(ds, port, info)) {
+			ret = ds->ops->port_change_mtu(ds, port, info->mtu);
+			if (ret)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
 static int dsa_switch_bridge_join(struct dsa_switch *ds,
 				  struct dsa_notifier_bridge_info *info)
 {
-	if (ds->index == info->sw_index && ds->ops->port_bridge_join)
+	struct dsa_switch_tree *dst = ds->dst;
+
+	if (dst->index == info->tree_index && ds->index == info->sw_index &&
+	    ds->ops->port_bridge_join)
 		return ds->ops->port_bridge_join(ds, info->port, info->br);
 
-	if (ds->index != info->sw_index && ds->ops->crosschip_bridge_join)
-		return ds->ops->crosschip_bridge_join(ds, info->sw_index,
+	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
+	    ds->ops->crosschip_bridge_join)
+		return ds->ops->crosschip_bridge_join(ds, info->tree_index,
+						      info->sw_index,
 						      info->port, info->br);
 
 	return 0;
@@ -69,13 +108,17 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
 				   struct dsa_notifier_bridge_info *info)
 {
 	bool unset_vlan_filtering = br_vlan_enabled(info->br);
+	struct dsa_switch_tree *dst = ds->dst;
 	int err, i;
 
-	if (ds->index == info->sw_index && ds->ops->port_bridge_leave)
+	if (dst->index == info->tree_index && ds->index == info->sw_index &&
+	    ds->ops->port_bridge_join)
 		ds->ops->port_bridge_leave(ds, info->port, info->br);
 
-	if (ds->index != info->sw_index && ds->ops->crosschip_bridge_leave)
-		ds->ops->crosschip_bridge_leave(ds, info->sw_index, info->port,
+	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
+	    ds->ops->crosschip_bridge_join)
+		ds->ops->crosschip_bridge_leave(ds, info->tree_index,
+						info->sw_index, info->port,
 						info->br);
 
 	/* If the bridge was vlan_filtering, the bridge core doesn't trigger an
@@ -328,6 +371,9 @@ static int dsa_switch_event(struct notifier_block *nb,
 	case DSA_NOTIFIER_VLAN_DEL:
 		err = dsa_switch_vlan_del(ds, info);
 		break;
+	case DSA_NOTIFIER_MTU:
+		err = dsa_switch_mtu(ds, info);
+		break;
 	default:
 		err = -EOPNOTSUPP;
 		break;