[minigraph] For egress ACL attaching to vlan, break them into vlan members (#6895)

#### Why I did it
Some platforms have difficult to attach egress ACL to vlan.

#### How I did it
For egress ACL attaching to vlan, break them into vlan members.

#### How to verify it
Unit test
Tested in DUT

src/sonic-config-engine/minigraph.py

@@ -522,7 +522,6 @@ def parse_dpg(dpg, hname):
                 dpg_ecmp_content['ipv4'] = ipv4_content
                 dpg_ecmp_content['ipv6'] = ipv6_content
         vlanintfs = child.find(str(QName(ns, "VlanInterfaces")))
-        vlan_intfs = []
         vlans = {}
         vlan_members = {}
         vlantype_name = ""
@@ -551,7 +550,7 @@ def parse_dpg(dpg, hname):
                 else:
                     vlan_members[(sonic_vlan_member_name, vmbr_list[i])] = {'tagging_mode': 'untagged'}
 
-            vlan_attributes = {'vlanid': vlanid}
+            vlan_attributes = {'vlanid': vlanid, 'members': vmbr_list }
 
             # If this VLAN requires a DHCP relay agent, it will contain a <DhcpRelays> element
             # containing a list of DHCP server IPs
@@ -579,7 +578,7 @@ def parse_dpg(dpg, hname):
                 aclname = aclintf.find(str(QName(ns, "OutAcl"))).text.upper().replace(" ", "_").replace("-", "_")
                 stage = "egress"
             else:
-                system.exit("Error: 'AclInterface' must contain either an 'InAcl' or 'OutAcl' subelement.")
+                sys.exit("Error: 'AclInterface' must contain either an 'InAcl' or 'OutAcl' subelement.")
             aclattach = aclintf.find(str(QName(ns, "AttachTo"))).text.split(';')
             acl_intfs = []
             is_mirror = False
@@ -596,7 +595,11 @@ def parse_dpg(dpg, hname):
                     # to LAG will be applied to all the LAG members internally by SAI/SDK
                     acl_intfs.append(member)
                 elif member in vlans:
-                    acl_intfs.append(member)
+                    # For egress ACL attaching to vlan, we break them into vlan members
+                    if stage == "egress":
+                        acl_intfs.extend(vlans[member]['members'])
+                    else:
+                        acl_intfs.append(member)
                 elif member in port_alias_map:
                     acl_intfs.append(port_alias_map[member])
                     # Give a warning if trying to attach ACL to a LAG member interface, correct way is to attach ACL to the LAG interface
@@ -620,9 +623,15 @@ def parse_dpg(dpg, hname):
                             acl_intfs.append(panel_port)
                     break
             if acl_intfs:
+                # Remove duplications
+                dedup_intfs = []
+                for intf in acl_intfs:
+                    if intf not in dedup_intfs:
+                        dedup_intfs.append(intf)
+
                 acls[aclname] = {'policy_desc': aclname,
                                  'stage': stage,
-                                 'ports': acl_intfs}
+                                 'ports': dedup_intfs}
                 if is_mirror:
                     acls[aclname]['type'] = 'MIRROR'
                 elif is_mirror_v6:

src/sonic-config-engine/tests/t0-sample-graph.xml

@@ -260,6 +260,20 @@
           <MacAddress i:nil="true"/>
           <SecondarySubnets/>
         </VlanInterface>
+        <VlanInterface>
+          <Name>Vlan98</Name>
+          <AttachTo>fortyGigE0/100;PortChannel01;PortChannel03</AttachTo>
+          <NoDhcpRelay>False</NoDhcpRelay>
+          <StaticDHCPRelay>0.0.0.0/0</StaticDHCPRelay>
+          <FhrpProtoType i:nil="true"/>
+          <Type>UserDefinedL2Vlan</Type>
+          <DhcpRelays>192.0.0.1;192.0.0.2</DhcpRelays>
+          <VlanID>98</VlanID>
+          <Tag>98</Tag>
+          <Subnets/>
+          <MacAddress i:nil="true"/>
+          <SecondarySubnets/>
+        </VlanInterface>
       </VlanInterfaces>
       <IPInterfaces>
         <IPInterface>
@@ -331,7 +345,7 @@
           <Type>DataPlane</Type>
         </AclInterface>
         <AclInterface>
-          <AttachTo>PortChannel01;PortChannel02</AttachTo>
+          <AttachTo>PortChannel01;PortChannel02;Vlan98</AttachTo>
           <OutAcl>DataAclEgress</OutAcl>
           <Type>DataPlane</Type>
         </AclInterface>

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

@@ -177,7 +177,7 @@ class TestCfgGen(TestCase):
                 "'DATAACLINGRESS': {'stage': 'ingress', 'type': 'L3', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04'], 'policy_desc': 'DATAACLINGRESS'}, "
                 "'SNMP_ACL': {'services': ['SNMP'], 'type': 'CTRLPLANE', 'policy_desc': 'SNMP_ACL', 'stage': 'ingress'}, "
                 "'SSH_ACL': {'services': ['SSH'], 'type': 'CTRLPLANE', 'policy_desc': 'SSH_ACL', 'stage': 'ingress'}, "
-                "'DATAACLEGRESS': {'stage': 'egress', 'type': 'L3', 'ports': ['PortChannel01', 'PortChannel02'], 'policy_desc': 'DATAACLEGRESS'}, "
+                "'DATAACLEGRESS': {'stage': 'egress', 'type': 'L3', 'ports': ['PortChannel01', 'PortChannel02', 'Ethernet100', 'PortChannel03'], 'policy_desc': 'DATAACLEGRESS'}, "
                 "'EVERFLOWV6': {'stage': 'ingress', 'type': 'MIRRORV6', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04', 'Ethernet4', 'Ethernet100'], 'policy_desc': 'EVERFLOWV6'}}"
             )
         )
@@ -207,10 +207,10 @@ class TestCfgGen(TestCase):
         self.assertEqual(
             utils.to_dict(output.strip()),
             utils.to_dict(
-                "{'Vlan1000': {'alias': 'ab1', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '1000'}, "
+                "{'Vlan1000': {'alias': 'ab1', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '1000', 'members': ['Ethernet8']}, "
-                "'Vlan2001': {'alias': 'ab3', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '2001'},"
+                "'Vlan2001': {'alias': 'ab3', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '2001', 'members': ['Ethernet12']},"
-                "'Vlan2000': {'alias': 'ab2', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '2000'},"
+                "'Vlan2000': {'alias': 'ab2', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '2000', 'members': ['Ethernet12']},"
-                "'Vlan2020': {'alias': 'kk1', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '2020'}}"
+                "'Vlan2020': {'alias': 'kk1', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '2020', 'members': ['Ethernet12']}}"
             )
         )
 

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

@@ -94,7 +94,7 @@ class TestCfgGenCaseInsensitive(TestCase):
         output = self.run_script(argument)
         self.assertEqual(
             utils.to_dict(output.strip()),
-            utils.to_dict("{'Vlan1000': {'alias': 'ab1', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '1000', 'mac': '00:aa:bb:cc:dd:ee' }}")
+            utils.to_dict("{'Vlan1000': {'alias': 'ab1', 'dhcp_servers': ['192.0.0.1', '192.0.0.2'], 'vlanid': '1000', 'mac': '00:aa:bb:cc:dd:ee', 'members': ['Ethernet8'] }}")
         )
 
     def test_minigraph_vlan_members(self):