summaryrefslogtreecommitdiffstats
path: root/net/8021q/vlan_gvrp.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--net/8021q/vlan_gvrp.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/net/8021q/vlan_gvrp.c b/net/8021q/vlan_gvrp.c
new file mode 100644
index 000000000..6b34b72aa
--- /dev/null
+++ b/net/8021q/vlan_gvrp.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
+ *
+ * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ */
+#include <linux/types.h>
+#include <linux/if_vlan.h>
+#include <net/garp.h>
+#include "vlan.h"
+
+#define GARP_GVRP_ADDRESS { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
+
+enum gvrp_attributes {
+ GVRP_ATTR_INVALID,
+ GVRP_ATTR_VID,
+ __GVRP_ATTR_MAX
+};
+#define GVRP_ATTR_MAX (__GVRP_ATTR_MAX - 1)
+
+static struct garp_application vlan_gvrp_app __read_mostly = {
+ .proto.group_address = GARP_GVRP_ADDRESS,
+ .maxattr = GVRP_ATTR_MAX,
+ .type = GARP_APPLICATION_GVRP,
+};
+
+int vlan_gvrp_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 garp_request_join(vlan->real_dev, &vlan_gvrp_app,
+ &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
+}
+
+void vlan_gvrp_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;
+ garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
+ &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
+}
+
+int vlan_gvrp_init_applicant(struct net_device *dev)
+{
+ return garp_init_applicant(dev, &vlan_gvrp_app);
+}
+
+void vlan_gvrp_uninit_applicant(struct net_device *dev)
+{
+ garp_uninit_applicant(dev, &vlan_gvrp_app);
+}
+
+int __init vlan_gvrp_init(void)
+{
+ return garp_register_application(&vlan_gvrp_app);
+}
+
+void vlan_gvrp_uninit(void)
+{
+ garp_unregister_application(&vlan_gvrp_app);
+}