1 files changed, 132 insertions, 0 deletions
diff --git a/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/write/acl/common/AceIpAndEthWriter.java b/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/write/acl/common/AceIpAndEthWriter.java
new file mode 100644
index 000000000..8efe3564e
--- /dev/null
+++ b/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/write/acl/common/AceIpAndEthWriter.java
@@ -0,0 +1,132 @@
+/*
+ * 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.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.InterfaceMode;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.AceIpAndEth;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.AceIpAndEthNodes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.ace.ip.and.eth.nodes.AceIpVersion;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.ace.ip.and.eth.nodes.ace.ip.version.AceIpv4;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.ace.ip.and.eth.nodes.ace.ip.version.AceIpv6;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class AceIpAndEthWriter
+    implements AceWriter<AceIpAndEth>, AclTranslator, L2AclTranslator, Ip4AclTranslator, Ip6AclTranslator {
+
+    private static final Logger LOG = LoggerFactory.getLogger(AceIpAndEthWriter.class);
+
+    private static int maskLength(@Nonnull final AceIpAndEth ace, final int vlanTags) {
+        if (ace.getAceIpAndEthNodes().getAceIpVersion() != null) {
+            if (ace.getAceIpAndEthNodes().getAceIpVersion() instanceof AceIpv4) {
+                return 48;
+            } else {
+                return vlanTags == 2
+                    ? 80
+                    : 64;
+            }
+        }
+        return 16;
+    }
+
+    @Override
+    public ClassifyAddDelTable createTable(@Nonnull final AceIpAndEth ace, @Nullable final InterfaceMode mode,
+                                           final int nextTableIndex, final int vlanTags) {
+        final AceIpAndEthNodes nodes = ace.getAceIpAndEthNodes();
+        final int numberOfSessions = PortPair.fromRange(nodes.getSourcePortRange(), nodes.getDestinationPortRange()).size();
+        final ClassifyAddDelTable request = createTable(nextTableIndex, numberOfSessions);
+        final int maskLength = maskLength(ace, vlanTags);
+        request.mask = new byte[maskLength];
+        request.skipNVectors = 0;
+        request.matchNVectors = maskLength / 16;
+
+        boolean aceIsEmpty =
+            destinationMacAddressMask(nodes.getDestinationMacAddressMask(), nodes.getDestinationMacAddress(), request);
+        aceIsEmpty &= sourceMacAddressMask(nodes.getSourceMacAddressMask(), nodes.getSourceMacAddress(), request);
+
+        // if we use classifier API, we need to know ip version (fields common for ip4 and ip6 have different offsets):
+        final AceIpVersion aceIpVersion = nodes.getAceIpVersion();
+        checkArgument(aceIpVersion != null, "AceIpAndEth have to define IpVersion");
+
+        final int baseOffset = getVlanTagsLen(vlanTags);
+        if (aceIpVersion instanceof AceIpv4) {
+            final AceIpv4 ipVersion = (AceIpv4) aceIpVersion;
+            aceIsEmpty &= ip4Mask(baseOffset, mode, nodes, ipVersion, request);
+        } else if (aceIpVersion instanceof AceIpv6) {
+            final AceIpv6 ipVersion = (AceIpv6) aceIpVersion;
+            aceIsEmpty &= ip6Mask(baseOffset, mode, nodes, ipVersion, request);
+        } else {
+            throw new IllegalArgumentException(String.format("Unsupported IP version %s", aceIpVersion));
+        }
+
+        if (aceIsEmpty) {
+            throw new IllegalArgumentException(
+                String.format("Ace %s does not define packet field match values", ace.toString()));
+        }
+
+        LOG.debug("ACE rule={} translated to table={}.", ace, request);
+        return request;
+    }
+
+    @Override
+    public List<ClassifyAddDelSession> createSession(@Nonnull final PacketHandling action,
+                                                     @Nonnull final AceIpAndEth ace,
+                                                     @Nullable final InterfaceMode mode, final int tableIndex,
+                                                     final int vlanTags) {
+        final AceIpAndEthNodes nodes = ace.getAceIpAndEthNodes();
+        final List<PortPair> portPairs = PortPair.fromRange(nodes.getSourcePortRange(), nodes.getDestinationPortRange());
+        final List<ClassifyAddDelSession> requests = new ArrayList<>(portPairs.size());
+        for (final PortPair pair : portPairs) {
+            final ClassifyAddDelSession request = createSession(action, tableIndex);
+            request.match = new byte[maskLength(ace, vlanTags)];
+
+            boolean noMatch = destinationMacAddressMatch(nodes.getDestinationMacAddress(), request);
+            noMatch &= sourceMacAddressMatch(nodes.getSourceMacAddress(), request);
+
+            final AceIpVersion aceIpVersion = nodes.getAceIpVersion();
+            checkArgument(aceIpVersion != null, "AceIpAndEth have to define IpVersion");
+
+            final int baseOffset = getVlanTagsLen(vlanTags);
+            if (aceIpVersion instanceof AceIpv4) {
+                final AceIpv4 ipVersion = (AceIpv4) aceIpVersion;
+                noMatch &= ip4Match(baseOffset, mode, nodes, ipVersion, pair.getSrc(), pair.getDst(), request);
+            } else if (aceIpVersion instanceof AceIpv6) {
+                final AceIpv6 ipVersion = (AceIpv6) aceIpVersion;
+                noMatch &= ip6Match(baseOffset, mode, nodes, ipVersion, pair.getSrc(), pair.getDst(), request);
+            } else {
+                throw new IllegalArgumentException(String.format("Unsupported IP version %s", aceIpVersion));
+            }
+
+            if (noMatch) {
+                throw new IllegalArgumentException(
+                    String.format("Ace %s does not define packet field match values", ace.toString()));
+            }
+            LOG.debug("ACE action={}, rule={} translated to session={}.", action, ace, request);
+            requests.add(request);
+        }
+        return requests;
+    }
+}