[minigraph.py] Add support for 'OutAcl' keyword and attaching ACLs to VLAN interfaces (#4229)

- Support parsing egress ACLs from minigraph file specified by the "OutAcl" element
- Support attaching ACLs to VLAN interfaces

Author: jleveque

src/sonic-config-engine/minigraph.py

@@ -230,7 +230,14 @@ def parse_dpg(dpg, hname):
         aclintfs = child.find(str(QName(ns, "AclInterfaces")))
         acls = {}
         for aclintf in aclintfs.findall(str(QName(ns, "AclInterface"))):
-            aclname = aclintf.find(str(QName(ns, "InAcl"))).text.upper().replace(" ", "_").replace("-", "_")
+            if aclintf.find(str(QName(ns, "InAcl"))) is not None:
+                aclname = aclintf.find(str(QName(ns, "InAcl"))).text.upper().replace(" ", "_").replace("-", "_")
+                stage = "ingress"
+            elif aclintf.find(str(QName(ns, "OutAcl"))) is not None:
+                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.")
             aclattach = aclintf.find(str(QName(ns, "AttachTo"))).text.split(';')
             acl_intfs = []
             is_mirror = False
@@ -247,7 +254,7 @@ def parse_dpg(dpg, hname):
                     # to LAG will be applied to all the LAG members internally by SAI/SDK
                     acl_intfs.append(member)
                 elif vlans.has_key(member):
-                    print >> sys.stderr, "Warning: ACL " + aclname + " is attached to a Vlan interface, which is currently not supported"
+                    acl_intfs.append(member)
                 elif port_alias_map.has_key(member):
                     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
@@ -270,13 +277,14 @@ def parse_dpg(dpg, hname):
                     break
             if acl_intfs:
                 acls[aclname] = {'policy_desc': aclname,
+                                 'stage': stage,
                                  'ports': acl_intfs}
                 if is_mirror:
                     acls[aclname]['type'] = 'MIRROR'
                 elif is_mirror_v6:
                     acls[aclname]['type'] = 'MIRRORV6'
                 else:
-                    acls[aclname]['type'] = 'L3'
+                    acls[aclname]['type'] = 'L3V6' if  'v6' in aclname.lower() else 'L3'
             else:
                 # This ACL has no interfaces to attach to -- consider this a control plane ACL
                 try:
@@ -294,6 +302,7 @@ def parse_dpg(dpg, hname):
                     else:
                         acls[aclname] = {'policy_desc': aclname,
                                          'type': 'CTRLPLANE',
+                                         'stage': stage,
                                          'services': [aclservice]}
                 except:
                     print >> sys.stderr, "Warning: Ignoring Control Plane ACL %s without type" % aclname

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

@@ -305,7 +305,12 @@
         </AclInterface>
         <AclInterface>
           <AttachTo>PortChannel01;PortChannel02;PortChannel03;PortChannel04</AttachTo>
-          <InAcl>DataAcl</InAcl>
+          <InAcl>DataAclIngress</InAcl>
+          <Type>DataPlane</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>PortChannel01;PortChannel02</AttachTo>
+          <OutAcl>DataAclEgress</OutAcl>
           <Type>DataPlane</Type>
         </AclInterface>
         <AclInterface>

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

@@ -84,13 +84,14 @@ def test_minigraph_acl(self):
         self.assertEqual(output.strip(), "Warning: Ignoring Control Plane ACL NTP_ACL without type\n"
                                          "Warning: ignore interface 'fortyGigE0/2' as it is not in the port_config.ini\n"
                                          "Warning: ignore interface 'fortyGigE0/2' in DEVICE_NEIGHBOR as it is not in the port_config.ini\n"
-                                         "{'DATAACL': {'type': 'L3', 'policy_desc': 'DATAACL', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04']}, "
-                                         "'NTP_ACL': {'services': ['NTP'], 'type': 'CTRLPLANE', 'policy_desc': 'NTP_ACL'}, "
-                                         "'EVERFLOW': {'type': 'MIRROR', 'policy_desc': 'EVERFLOW', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04', 'Ethernet4']}, "
-                                         "'ROUTER_PROTECT': {'services': ['SSH', 'SNMP'], 'type': 'CTRLPLANE', 'policy_desc': 'ROUTER_PROTECT'}, "
-                                         "'SNMP_ACL': {'services': ['SNMP'], 'type': 'CTRLPLANE', 'policy_desc': 'SNMP_ACL'}, "
-                                         "'SSH_ACL': {'services': ['SSH'], 'type': 'CTRLPLANE', 'policy_desc': 'SSH_ACL'}, "
-                                         "'EVERFLOWV6': {'type': 'MIRRORV6', 'policy_desc': 'EVERFLOWV6', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04', 'Ethernet4']}}")
+                                         "{'NTP_ACL': {'services': ['NTP'], 'type': 'CTRLPLANE', 'policy_desc': 'NTP_ACL', 'stage': 'ingress'}, "
+                                         "'EVERFLOW': {'stage': 'ingress', 'type': 'MIRROR', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04', 'Ethernet4'], 'policy_desc': 'EVERFLOW'}, "
+                                         "'ROUTER_PROTECT': {'services': ['SSH', 'SNMP'], 'type': 'CTRLPLANE', 'policy_desc': 'ROUTER_PROTECT', 'stage': 'ingress'}, "
+                                         "'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'}, "
+                                         "'EVERFLOWV6': {'stage': 'ingress', 'type': 'MIRRORV6', 'ports': ['PortChannel01', 'PortChannel02', 'PortChannel03', 'PortChannel04', 'Ethernet4'], 'policy_desc': 'EVERFLOWV6'}}")
 
 #     everflow portion is not used
 #     def test_minigraph_everflow(self):