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authorPatrick McHardy <kaber@trash.net>2008-07-05 21:26:57 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-05 21:26:57 -0700
commit70c03b49b80ba3634958acc31853771019c0ebd3 (patch)
tree097861a5da46fc10696c97f21720c1e5053b322f /net/8021q/vlan_gvrp.c
parentvlan: Move device unregistration before lower dev cleanup (diff)
downloadlinux-dev-70c03b49b80ba3634958acc31853771019c0ebd3.tar.xz
linux-dev-70c03b49b80ba3634958acc31853771019c0ebd3.zip
vlan: Add GVRP support
Add GVRP support for dynamically registering VLANs with switches. By default GVRP is disabled because we only support the applicant-only participant model, which means it should not be enabled on vlans that are members of a bridge. Since there is currently no way to cleanly determine that, the user is responsible for enabling it. The code is pretty small and low impact, its wrapped in a config option though because it depends on the GARP implementation and the STP core. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan_gvrp.c')
-rw-r--r--net/8021q/vlan_gvrp.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/net/8021q/vlan_gvrp.c b/net/8021q/vlan_gvrp.c
new file mode 100644
index 000000000000..db9781608362
--- /dev/null
+++ b/net/8021q/vlan_gvrp.c
@@ -0,0 +1,66 @@
+/*
+ * IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
+ *
+ * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+#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_info *vlan = vlan_dev_info(dev);
+ __be16 vid = htons(vlan->vlan_id);
+
+ return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
+ &vid, sizeof(vid), GVRP_ATTR_VID);
+}
+
+void vlan_gvrp_request_leave(const struct net_device *dev)
+{
+ const struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ __be16 vid = htons(vlan->vlan_id);
+
+ garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
+ &vid, sizeof(vid), 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);
+}