1 files changed, 73 insertions, 0 deletions
diff --git a/net/8021q/vlan_mvrp.c b/net/8021q/vlan_mvrp.c
new file mode 100644
index 000000000..689eceeaa
--- /dev/null
+++ b/net/8021q/vlan_mvrp.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *	IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP)
+ *
+ *	Copyright (c) 2012 Massachusetts Institute of Technology
+ *
+ *	Adapted from code in net/8021q/vlan_gvrp.c
+ *	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ */
+#include <linux/types.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <net/mrp.h>
+#include "vlan.h"
+
+#define MRP_MVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
+
+enum mvrp_attributes {
+	MVRP_ATTR_INVALID,
+	MVRP_ATTR_VID,
+	__MVRP_ATTR_MAX
+};
+#define MVRP_ATTR_MAX	(__MVRP_ATTR_MAX - 1)
+
+static struct mrp_application vlan_mrp_app __read_mostly = {
+	.type		= MRP_APPLICATION_MVRP,
+	.maxattr	= MVRP_ATTR_MAX,
+	.pkttype.type	= htons(ETH_P_MVRP),
+	.group_address	= MRP_MVRP_ADDRESS,
+	.version	= 0,
+};
+
+int vlan_mvrp_request_join(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	if (vlan->vlan_proto != htons(ETH_P_8021Q))
+		return 0;
+	return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
+				&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
+}
+
+void vlan_mvrp_request_leave(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	if (vlan->vlan_proto != htons(ETH_P_8021Q))
+		return;
+	mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
+			  &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
+}
+
+int vlan_mvrp_init_applicant(struct net_device *dev)
+{
+	return mrp_init_applicant(dev, &vlan_mrp_app);
+}
+
+void vlan_mvrp_uninit_applicant(struct net_device *dev)
+{
+	mrp_uninit_applicant(dev, &vlan_mrp_app);
+}
+
+int __init vlan_mvrp_init(void)
+{
+	return mrp_register_application(&vlan_mrp_app);
+}
+
+void vlan_mvrp_uninit(void)
+{
+	mrp_unregister_application(&vlan_mrp_app);
+}