T898: add a script for checking if a bridge has configured members.

1 files changed, 85 insertions, 0 deletions

diff --git a/src/conf_mode/bridge_has_members.py b/src/conf_mode/bridge_has_members.py
new file mode 100755
index 000000000..712a9cc46
--- /dev/null
+++ b/src/conf_mode/bridge_has_members.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import sys
+
+import vyos.config
+
+if len(sys.argv) < 2:
+    print("Argument (bridge interface name) is required")
+    sys.exit(1)
+else:
+    bridge = sys.argv[1]
+
+c = vyos.config.Config()
+
+members = []
+
+
+# Check in ethernet and bonding interfaces
+for p in ["interfaces ethernet", "interfaces bonding"]:
+    intfs = c.list_nodes(p)
+    for i in intfs:
+        intf_bridge_path = "{0} {1} bridge-group bridge".format(p, i)
+        if c.exists(intf_bridge_path):
+            intf_bridge = c.return_value(intf_bridge_path)
+            if intf_bridge == bridge:
+                members.append(i)
+        # Walk VLANs
+        for v in c.list_nodes("{0} {1} vif".format(p, i)):
+            vif_bridge_path = "{0} {1} vif {2} bridge-group bridge".format(p, i, v)
+            if c.exists(vif_bridge_path):
+                vif_bridge = c.return_value(vif_bridge_path)
+                if vif_bridge == bridge:
+                    members.append("{0}.{1}".format(i, v))
+        # Walk QinQ interfaces
+        for vs in c.list_nodes("{0} {1} vif-s".format(p, i)):
+            vifs_bridge_path = "{0} {1} vif-s {2} bridge-group bridge".format(p, i, vs)
+            if c.exists(vifs_bridge_path):
+                vifs_bridge = c.return_value(vifs_bridge_path)
+                if vifs_bridge == bridge:
+                    members.append("{0}.{1}".format(i, vs))
+            for vc in c.list_nodes("{0} {1} vif-s {2} vif-c".format(p, i, vs)):
+                vifc_bridge_path = "{0} {1} vif-s {2} vif-c {3} bridge-group bridge".format(p, i, vs, vc)
+                if c.exists(vifc_bridge_path):
+                    vifc_bridge = c.return_value(vifc_bridge_path)
+                    if vifc_bridge == bridge:
+                        members.append("{0}.{1}.{2}".format(i, vs, vc))
+
+# Check tunnel interfaces
+for t in c.list_nodes("interfaces tunnel"):
+    tunnel_bridge_path = "interfaces tunnel {0} parameters ip bridge-group bridge".format(t)
+    if c.exists(tunnel_bridge_path):
+        intf_bridge = c.return_value(tunnel_bridge_path)
+        if intf_bridge == bridge:
+            members.append(t)
+
+# Check OpenVPN interfaces
+for o in c.list_nodes("interfaces openvpn"):
+    ovpn_bridge_path = "interfaces openvpn {0} bridge-group bridge".format(o)
+    if c.exists(ovpn_bridge_path):
+        intf_bridge = c.return_value(ovpn_bridge_path)
+        if intf_bridge == bridge:
+            members.append(o)
+
+if members:
+    print("Bridge {0} cannot be deleted because some interfaces are configured as its members".format(bridge))
+    print("The following interfaces are members of {0}: {1}".format(bridge, " ".join(members)))
+    sys.exit(1)
+else:
+    sys.exit(0)