1 files changed, 99 insertions, 0 deletions
diff --git a/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/write/acl/common/AceIp6Writer.java b/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/write/acl/common/AceIp6Writer.java
new file mode 100644
index 000000000..2004d4e06
--- /dev/null
+++ b/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/write/acl/common/AceIp6Writer.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.hc2vpp.vpp.classifier.write.acl.common;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSession;
+import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTable;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.PacketHandling;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.matches.ace.type.AceIp;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.ace.ip.version.AceIpv6;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.InterfaceMode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+final class AceIp6Writer implements AceWriter<AceIp>, AclTranslator, Ip6AclTranslator {
+
+    private static final Logger LOG = LoggerFactory.getLogger(AceIp6Writer.class);
+
+    @Override
+    public ClassifyAddDelTable createTable(@Nonnull final AceIp aceIp,
+                                           @Nullable final InterfaceMode mode,
+                                           final int nextTableIndex,
+                                           final int vlanTags) {
+        checkArgument(aceIp.getAceIpVersion() instanceof AceIpv6, "Expected AceIpv6 version, but was %", aceIp);
+        final AceIpv6 ipVersion = (AceIpv6) aceIp.getAceIpVersion();
+
+        final int numberOfSessions = PortPair.fromRange(aceIp.getSourcePortRange(), aceIp.getDestinationPortRange()).size();
+        final ClassifyAddDelTable request = createTable(nextTableIndex, numberOfSessions);
+        request.skipNVectors = 0; // match entire L2 and L3 header
+        request.mask = new byte[getTableMaskLength(vlanTags)];
+        request.matchNVectors = request.mask.length/16;
+
+        final int baseOffset = getVlanTagsLen(vlanTags);
+        boolean aceIsEmpty = ip6Mask(baseOffset, mode, aceIp, ipVersion, request);
+        if (aceIsEmpty) {
+            throw new IllegalArgumentException(
+                String.format("Ace %s does not define packet field match values", aceIp.toString()));
+        }
+
+        LOG.debug("ACE rule={} translated to table={}.", aceIp, request);
+        return request;
+    }
+
+    private static int getTableMaskLength(final int vlanTags) {
+        if (vlanTags == 2) {
+            return 80;
+        } else {
+            return 64;
+        }
+    }
+
+    @Override
+    public List<ClassifyAddDelSession> createSession(@Nonnull final PacketHandling action,
+                                                     @Nonnull final AceIp aceIp,
+                                                     @Nullable final InterfaceMode mode,
+                                                     final int tableIndex,
+                                                     final int vlanTags) {
+        checkArgument(aceIp.getAceIpVersion() instanceof AceIpv6, "Expected AceIpv6 version, but was %", aceIp);
+        final AceIpv6 ipVersion = (AceIpv6) aceIp.getAceIpVersion();
+        final List<PortPair> portPairs =
+            PortPair.fromRange(aceIp.getSourcePortRange(), aceIp.getDestinationPortRange());
+
+        final List<ClassifyAddDelSession> requests = new ArrayList<>(portPairs.size());
+        for (final PortPair pair : portPairs) {
+            final ClassifyAddDelSession request = createSession(action, tableIndex);
+            request.match = new byte[getTableMaskLength(vlanTags)];
+
+            final int baseOffset = getVlanTagsLen(vlanTags);
+            boolean noMatch = ip6Match(baseOffset, mode, aceIp, ipVersion, pair.getSrc(), pair.getDst(), request);
+            if (noMatch) {
+                throw new IllegalArgumentException(
+                    String.format("Ace %s does not define packet field match values", aceIp.toString()));
+            }
+
+            LOG.debug("ACE action={}, rule={} translated to session={}.", action, aceIp, request);
+            requests.add(request);
+        }
+        return requests;
+    }
+}