[sonic-buildimage] updated minigraph for ACL Table data and ACL Inter…

…face Binding for Multi-NPU platforms (#4491)

* [sonic-buildimage] updated minigraph for ACL Table data and ACL Interface
binding update for multu-npu platform based on subrole as "Frontend" or
"Backend". For backend npu no ACL table is associated. For frontend npu
only front-panel interface are associated.

Updated with test case and fix typo in sample-mingraph for npu

Address Review comments

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>

* Fixed the logic as per preview comment. Interface Filter logic
only applies to Everflow/Mirror tables.

* Address Review Comments.

src/sonic-config-engine/minigraph.py

@@ -35,7 +35,11 @@
 VLAN_SUB_INTERFACE_SEPARATOR = '.'
 VLAN_SUB_INTERFACE_VLAN_ID = '10'
 
-# Default Virtual Network Index (VNI)
+FRONTEND_ASIC_SUB_ROLE = 'FrontEnd'
+BACKEND_ASIC_SUB_ROLE = 'BackEnd'
+BACKEND_ASIC_INTERFACE_NAME_PREFIX = 'Ethernet-BP'
+
+# Default Virtual Network Index (VNI) 
 vni_default = 8000
 
 ###############################################################################
@@ -401,7 +405,9 @@ def parse_dpg(dpg, hname):
                     # later after the rest of the minigraph has been parsed.
                     acl_intfs = pc_intfs[:]
                     for panel_port in port_alias_map.values():
-                        if panel_port not in intfs_inpc:
+                        # because of port_alias_asic_map we can have duplicate in port_alias_map
+                        # so check if already present do not add
+                        if panel_port not in intfs_inpc and panel_port not in acl_intfs:
                             acl_intfs.append(panel_port)
                     break
             if acl_intfs:
@@ -687,27 +693,61 @@ def parse_spine_chassis_fe(results, vni, lo_intfs, phyport_intfs, pc_intfs, pc_m
 #
 ###############################################################################
 
-def filter_acl_mirror_table_bindings(acls, neighbors, port_channels):
-    """
-        Filters out inactive front-panel ports from the binding list for mirror
-        ACL tables. We define an "active" port as one that is a member of a
-        port channel or one that is connected to a neighboring device.
-    """
+def filter_acl_table_bindings(acls, neighbors, port_channels, sub_role):
+    filter_acls = {}
+
+    # If the asic role is BackEnd no ACL Table (Ctrl/Data/Everflow) is binded.
+    # This will be applicable in Multi-NPU Platforms.
+
+    if sub_role == BACKEND_ASIC_SUB_ROLE:
+        return filter_acls
+
+    front_port_channel_intf = []
+
+    # Get the front panel port channel. It will use port_alias_asic_map
+    # which will get populated from port_config.ini for Multi-NPU 
+    # architecture
+    for port_channel_intf in port_channels:
+        backend_port_channel = any(lag_member in port_alias_asic_map \
+                                   and lag_member.startswith(BACKEND_ASIC_INTERFACE_NAME_PREFIX) \
+                                   for lag_member in port_channels[port_channel_intf]['members'])
+        if not backend_port_channel:
+            front_port_channel_intf.append(port_channel_intf)
 
     for acl_table, group_params in acls.iteritems():
         group_type = group_params.get('type', None)
+        filter_acls[acl_table] = acls[acl_table]
 
+        # For Control Plane and Data ACL no filtering is needed
+        # Control Plane ACL has no Interface associated and
+        # Data Plane ACL Interface are attached via minigraph
+        # AclInterface.
         if group_type != 'MIRROR' and group_type != 'MIRRORV6':
             continue
 
-        active_ports = [ port for port in group_params.get('ports', []) if port in neighbors.keys() or port in port_channels ]
-
+        # Filters out back-panel ports from the binding list for Everflow (Mirror)
+        # ACL tables. We define an "back-panel" port as one that is a member of a
+        # port channel connected to back asic or directly connected to back asic.
+        # This will be applicable in Multi-NPU Platforms.
+        front_panel_ports = []
+        for port in group_params.get('ports', []):
+            if port in port_alias_asic_map and port.startswith(BACKEND_ASIC_INTERFACE_NAME_PREFIX):
+                continue
+            if port in port_channels and port not in front_port_channel_intf:
+                continue
+            front_panel_ports.append(port)
+
+        # Filters out inactive front-panel ports from the binding list for mirror
+        # ACL tables. We define an "active" port as one that is a member of a
+        # front pannel port channel or one that is connected to a neighboring device via front panel port.
+        active_ports = [port for port in front_panel_ports if port in neighbors.keys() or port in front_port_channel_intf]
+
         if not active_ports:
             print >> sys.stderr, 'Warning: mirror table {} in ACL_TABLE does not have any ports bound to it'.format(acl_table)
 
-        acls[acl_table]['ports'] = active_ports
+        filter_acls[acl_table]['ports'] = active_ports
 
-    return acls
+    return filter_acls
 
 ###############################################################################
 #
@@ -1020,7 +1060,7 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None):
     results['DHCP_SERVER'] = dict((item, {}) for item in dhcp_servers)
     results['NTP_SERVER'] = dict((item, {}) for item in ntp_servers)
     results['TACPLUS_SERVER'] = dict((item, {'priority': '1', 'tcp_port': '49'}) for item in tacacs_servers)
-    results['ACL_TABLE'] = filter_acl_mirror_table_bindings(acls, neighbors, pcs)
+    results['ACL_TABLE'] = filter_acl_table_bindings(acls, neighbors, pcs, sub_role)
     results['FEATURE'] = {
         'telemetry': {
             'status': 'enabled'

src/sonic-config-engine/tests/multi_npu_data/sample-minigraph.xml

@@ -650,14 +650,14 @@
         <EndDevice>05T2</EndDevice>
         <EndPort>Ethernet1</EndPort>
         <StartDevice>multi_npu_platform_01</StartDevice>
-        <StartPort>Ethernet1/8</StartPort>
+        <StartPort>Ethernet1/5</StartPort>
       </DeviceLinkBase>
       <DeviceLinkBase>
         <ElementType>DeviceInterfaceLink</ElementType>
         <EndDevice>05T2</EndDevice>
         <EndPort>Ethernet2</EndPort>
         <StartDevice>multi_npu_platform_01</StartDevice>
-        <StartPort>Ethernet1/9</StartPort>
+        <StartPort>Ethernet1/6</StartPort>
       </DeviceLinkBase>
       <DeviceLinkBase i:type="DeviceInterfaceLink">
         <ElementType>DeviceInterfaceLink</ElementType>

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

@@ -220,3 +220,28 @@ def test_device_asic_metadata(self):
                 self.assertEqual(output['localhost']['sub_role'], 'FrontEnd')
             else:
                 self.assertEqual(output['localhost']['sub_role'], 'BackEnd')
+
+    def test_global_asic_acl(self):
+        argument = "-m {} --var-json \"ACL_TABLE\"".format(self.sample_graph)
+        output = json.loads(self.run_script(argument))
+        self.assertDictEqual(output, {\
+                             'DATAACL':   {'policy_desc': 'DATAACL',    'ports': ['PortChannel0002','PortChannel0008'], 'stage': 'ingress', 'type': 'L3'},
+                             'EVERFLOW':  {'policy_desc': 'EVERFLOW',   'ports': ['PortChannel0002','PortChannel0008'], 'stage': 'ingress', 'type': 'MIRROR'},
+                             'EVERFLOWV6':{'policy_desc': 'EVERFLOWV6', 'ports': ['PortChannel0002','PortChannel0008'], 'stage': 'ingress', 'type': 'MIRRORV6'},
+                             'SNMP_ACL':  {'policy_desc': 'SNMP_ACL',    'services': ['SNMP'],        'stage': 'ingress', 'type': 'CTRLPLANE'},
+                             'SSH_ONLY':  {'policy_desc': 'SSH_ONLY',    'services': ['SSH'],         'stage': 'ingress', 'type': 'CTRLPLANE'}})
+
+    def test_front_end_asic_acl(self):
+        argument = "-m {} -p {} -n asic0 --var-json \"ACL_TABLE\"".format(self.sample_graph, self.port_config[0])
+        output = json.loads(self.run_script(argument))
+        self.assertDictEqual(output, {\
+                             'DATAACL':   {'policy_desc': 'DATAACL',    'ports': ['PortChannel0002'], 'stage': 'ingress', 'type': 'L3'},
+                             'EVERFLOW':  {'policy_desc': 'EVERFLOW',   'ports': ['PortChannel0002'], 'stage': 'ingress', 'type': 'MIRROR'},
+                             'EVERFLOWV6':{'policy_desc': 'EVERFLOWV6', 'ports': ['PortChannel0002'], 'stage': 'ingress', 'type': 'MIRRORV6'},
+                             'SNMP_ACL':  {'policy_desc': 'SNMP_ACL',    'services': ['SNMP'],        'stage': 'ingress', 'type': 'CTRLPLANE'},
+                             'SSH_ONLY':  {'policy_desc': 'SSH_ONLY',    'services': ['SSH'],         'stage': 'ingress', 'type': 'CTRLPLANE'}})
+
+    def test_back_end_asic_acl(self):
+        argument = "-m {} -p {} -n asic3 --var-json \"ACL_TABLE\"".format(self.sample_graph, self.port_config[3])
+        output = json.loads(self.run_script(argument))
+        self.assertDictEqual(output, {})