[minigraph] Support parse IPv6 in device_desc.xml (#11095)

Signed-off-by: Jing Kan jika@microsoft.com

src/sonic-config-engine/minigraph.py

@@ -87,6 +87,7 @@ def parse_device(device):
     lo_prefix = None
     lo_prefix_v6 = None
     mgmt_prefix = None
+    mgmt_prefix_v6 = None
     d_type = None   # don't shadow type()
     hwsku = None
     name = None
@@ -101,6 +102,8 @@ def parse_device(device):
             lo_prefix_v6 = node.find(str(QName(ns2, "IPPrefix"))).text
         elif node.tag == str(QName(ns, "ManagementAddress")):
             mgmt_prefix = node.find(str(QName(ns2, "IPPrefix"))).text
+        elif node.tag == str(QName(ns, "ManagementAddressV6")):
+            mgmt_prefix_v6 = node.find(str(QName(ns2, "IPPrefix"))).text
         elif node.tag == str(QName(ns, "Hostname")):
             name = node.text
         elif node.tag == str(QName(ns, "HwSku")):
@@ -117,7 +120,7 @@ def parse_device(device):
     if d_type is None and str(QName(ns3, "type")) in device.attrib:
         d_type = device.attrib[str(QName(ns3, "type"))]
 
-    return (lo_prefix, lo_prefix_v6, mgmt_prefix, name, hwsku, d_type, deployment_id, cluster, d_subtype)
+    return (lo_prefix, lo_prefix_v6, mgmt_prefix, mgmt_prefix_v6, name, hwsku, d_type, deployment_id, cluster, d_subtype)
 
 
 def calculate_lcm_for_ecmp (nhdevices_bank_map, nhip_bank_map):
@@ -254,7 +257,7 @@ def parse_png(png, hname, dpg_ecmp_content = None):
 
         if child.tag == str(QName(ns, "Devices")):
             for device in child.findall(str(QName(ns, "Device"))):
-                (lo_prefix, lo_prefix_v6, mgmt_prefix, name, hwsku, d_type, deployment_id, cluster, d_subtype) = parse_device(device)
+                (lo_prefix, lo_prefix_v6, mgmt_prefix, mgmt_prefix_v6, name, hwsku, d_type, deployment_id, cluster, d_subtype) = parse_device(device)
                 device_data = {'lo_addr': lo_prefix, 'type': d_type, 'mgmt_addr': mgmt_prefix, 'hwsku': hwsku}
                 if cluster:
                     device_data['cluster'] = cluster
@@ -387,7 +390,7 @@ def parse_asic_png(png, asic_name, hostname):
 
         if child.tag == str(QName(ns, "Devices")):
             for device in child.findall(str(QName(ns, "Device"))):
-                (lo_prefix, lo_prefix_v6, mgmt_prefix, name, hwsku, d_type, deployment_id, cluster, _) = parse_device(device)
+                (lo_prefix, lo_prefix_v6, mgmt_prefix, mgmt_prefix_v6, name, hwsku, d_type, deployment_id, cluster, _) = parse_device(device)
                 device_data = {'lo_addr': lo_prefix, 'type': d_type, 'mgmt_addr': mgmt_prefix, 'hwsku': hwsku }
                 if cluster:
                     device_data['cluster'] = cluster
@@ -1836,7 +1839,7 @@ def get_mux_cable_entries(mux_cable_ports, neighbors, devices):
 
 def parse_device_desc_xml(filename):
     root = ET.parse(filename).getroot()
-    (lo_prefix, lo_prefix_v6, mgmt_prefix, hostname, hwsku, d_type, _, _, _) = parse_device(root)
+    (lo_prefix, lo_prefix_v6, mgmt_prefix, mgmt_prefix_v6, hostname, hwsku, d_type, _, _, _) = parse_device(root)
 
     results = {}
     results['DEVICE_METADATA'] = {'localhost': {
@@ -1848,10 +1851,18 @@ def parse_device_desc_xml(filename):
     if lo_prefix_v6:
         results['LOOPBACK_INTERFACE'] = {('lo_v6', lo_prefix_v6): {}}
 
-    mgmt_intf = {}
-    mgmtipn = ipaddress.ip_network(UNICODE_TYPE(mgmt_prefix), False)
-    gwaddr = ipaddress.ip_address((next(mgmtipn.hosts())))
-    results['MGMT_INTERFACE'] = {('eth0', mgmt_prefix): {'gwaddr': gwaddr}}
+    results['MGMT_INTERFACE'] = {}
+    if mgmt_prefix:
+        mgmtipn = ipaddress.ip_network(UNICODE_TYPE(mgmt_prefix), False)
+        if mgmtipn != ipaddress.ip_network(u'0.0.0.0/0', False):
+            gwaddr = ipaddress.ip_address((next(mgmtipn.hosts())))
+            results['MGMT_INTERFACE'].update({('eth0', mgmt_prefix): {'gwaddr': gwaddr}})
+
+    if mgmt_prefix_v6:
+        mgmtipn_v6 = ipaddress.ip_network(UNICODE_TYPE(mgmt_prefix_v6), False)
+        if mgmtipn != ipaddress.ip_network(u'::/0', False):
+            gwaddr_v6 = ipaddress.ip_address((next(mgmtipn_v6.hosts())))
+            results['MGMT_INTERFACE'].update({('eth0', mgmt_prefix_v6): {'gwaddr': gwaddr_v6}})
 
     return results
 

src/sonic-config-engine/tests/simple-sample-device-desc-ipv6-only.xml

@@ -0,0 +1,11 @@
+<Device i:type="ToRRouter" xmlns="Microsoft.Search.Autopilot.Evolution" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
+  <Hostname>switch-t0</Hostname>
+  <HwSku>Force10-S6000</HwSku>
+  <ClusterName>AAA00PrdStr00</ClusterName>
+  <ManagementAddress xmlns:a="Microsoft.Search.Autopilot.NetMux">
+    <a:IPPrefix>0.0.0.0/0</a:IPPrefix>
+    </ManagementAddress>
+    <ManagementAddressV6 xmlns:a="Microsoft.Search.Autopilot.NetMux">
+    <a:IPPrefix>FC00:1::32/64</a:IPPrefix>
+  </ManagementAddressV6>
+</Device>

src/sonic-config-engine/tests/simple-sample-device-desc.xml

@@ -0,0 +1,11 @@
+<Device i:type="ToRRouter" xmlns="Microsoft.Search.Autopilot.Evolution" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
+  <Hostname>switch-t0</Hostname>
+  <HwSku>Force10-S6000</HwSku>
+  <ClusterName>AAA00PrdStr00</ClusterName>
+  <ManagementAddress xmlns:a="Microsoft.Search.Autopilot.NetMux">
+    <a:IPPrefix>10.0.0.100/24</a:IPPrefix>
+    </ManagementAddress>
+    <ManagementAddressV6 xmlns:a="Microsoft.Search.Autopilot.NetMux">
+    <a:IPPrefix>FC00:1::32/64</a:IPPrefix>
+  </ManagementAddressV6>
+</Device>

src/sonic-config-engine/tests/test_minigraph_case.py

@@ -1,6 +1,7 @@
 import json
 import os
 import subprocess
+import ipaddress
 
 import tests.common_utils as utils
 import minigraph
@@ -21,6 +22,8 @@ def setUp(self):
         self.sample_simple_graph = os.path.join(self.test_dir, 'simple-sample-graph.xml')
         self.sample_resource_graph = os.path.join(self.test_dir, 'sample-graph-resource-type.xml')
         self.sample_subintf_graph = os.path.join(self.test_dir, 'sample-graph-subintf.xml')
+        self.sample_simple_device_desc = os.path.join(self.test_dir, 'simple-sample-device-desc.xml')
+        self.sample_simple_device_desc_ipv6_only = os.path.join(self.test_dir, 'simple-sample-device-desc-ipv6-only.xml')
         self.port_config = os.path.join(self.test_dir, 't0-sample-port-config.ini')
 
     def run_script(self, argument, check_stderr=False):
@@ -463,5 +466,19 @@ def test_minigraph_mirror_dscp(self):
             expected_ports.sort()
         )
 
-
-
+    def test_parse_device_desc_xml_mgmt_interface(self):
+        # Regular device_desc.xml with both IPv4 and IPv6 mgmt address
+        result = minigraph.parse_device_desc_xml(self.sample_simple_device_desc)
+        mgmt_intf = result['MGMT_INTERFACE']
+        self.assertEqual(len(mgmt_intf.keys()), 2)
+        self.assertTrue(('eth0', '10.0.0.100/24') in mgmt_intf.keys())
+        self.assertTrue(('eth0', 'FC00:1::32/64') in mgmt_intf.keys())
+        self.assertTrue(ipaddress.ip_address(u'10.0.0.1') == mgmt_intf[('eth0', '10.0.0.100/24')]['gwaddr'])
+        self.assertTrue(ipaddress.ip_address(u'fc00:1::1') == mgmt_intf[('eth0', 'FC00:1::32/64')]['gwaddr'])
+
+        # Special device_desc.xml with IPv6 mgmt address only
+        result = minigraph.parse_device_desc_xml(self.sample_simple_device_desc_ipv6_only)
+        mgmt_intf = result['MGMT_INTERFACE']
+        self.assertEqual(len(mgmt_intf.keys()), 1)
+        self.assertTrue(('eth0', 'FC00:1::32/64') in mgmt_intf.keys())
+        self.assertTrue(ipaddress.ip_address(u'fc00:1::1') == mgmt_intf[('eth0', 'FC00:1::32/64')]['gwaddr'])