vpnservice/aclservice/impl/src/main/java/org/opendaylight/netvirt/aclservice/StatelessEgressAclServiceImpl.java

   1 /*
   2  * Copyright (c) 2016 Red Hat, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.netvirt.aclservice;
   9
  10 import java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.Map;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.genius.mdsalutil.ActionInfo;
  16 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  17 import org.opendaylight.genius.mdsalutil.MatchFieldType;
  18 import org.opendaylight.genius.mdsalutil.MatchInfo;
  19 import org.opendaylight.genius.mdsalutil.MatchInfoBase;
  20 import org.opendaylight.genius.mdsalutil.NwConstants;
  21 import org.opendaylight.genius.mdsalutil.NxMatchFieldType;
  22 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  23 import org.opendaylight.netvirt.aclservice.api.AclServiceManager.Action;
  24 import org.opendaylight.netvirt.aclservice.utils.AclConstants;
  25 import org.opendaylight.netvirt.aclservice.utils.AclServiceOFFlowBuilder;
  26 import org.opendaylight.netvirt.aclservice.utils.AclServiceUtils;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.Ace;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.Matches;
  29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.matches.AceType;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.matches.ace.type.AceIp;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.DirectionEgress;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.SecurityRuleAttr;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.interfaces._interface.AllowedAddressPairs;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * Provides the stateless implementation for egress (w.r.t VM) ACL service.
  39  *
  40  * <p>
  41  * Note: Table names used are w.r.t switch. Hence, switch ingress is VM egress
  42  * and vice versa.
  43  */
  44 public class StatelessEgressAclServiceImpl extends EgressAclServiceImpl {
  45
  46     private static final Logger LOG = LoggerFactory.getLogger(StatelessEgressAclServiceImpl.class);
  47
  48     public StatelessEgressAclServiceImpl(DataBroker dataBroker,
  49             IMdsalApiManager mdsalManager) {
  50         super(dataBroker, mdsalManager);
  51     }
  52
  53     @Override
  54     protected void programFixedRules(BigInteger dpid, String dhcpMacAddress, List<AllowedAddressPairs> allowedAddresses,
  55             int lportTag, Action action, int addOrRemove) {
  56     }
  57
  58     @Override
  59     protected void programAceRule(BigInteger dpId, int lportTag, int addOrRemove, Ace ace, String portId,
  60             List<AllowedAddressPairs> syncAllowedAddresses) {
  61         SecurityRuleAttr aceAttr = AclServiceUtils.getAccesssListAttributes(ace);
  62         if (!aceAttr.getDirection().equals(DirectionEgress.class)) {
  63             return;
  64         }
  65         Matches matches = ace.getMatches();
  66         AceType aceType = matches.getAceType();
  67         Map<String, List<MatchInfoBase>> flowMap = null;
  68         Short protocol = null;
  69
  70         if (aceType instanceof AceIp) {
  71             protocol = ((AceIp)aceType).getProtocol();
  72             flowMap = AclServiceOFFlowBuilder.programIpFlow(matches);
  73         }
  74         if (null == flowMap) {
  75             LOG.error("Failed to apply ACL {}", ace.getKey());
  76             return;
  77         }
  78         for (Map.Entry<String, List<MatchInfoBase>> flow : flowMap.entrySet()) {
  79             String flowName = flow.getKey();
  80             List<MatchInfoBase> flowMatches = flow.getValue();
  81             boolean hasTcpDstMatch = AclServiceUtils.containsMatchFieldType(flowMatches,
  82                     NxMatchFieldType.nx_tcp_dst_with_mask);
  83             if (hasTcpDstMatch || protocol == null) {
  84                 flowName += "Egress" + lportTag + ace.getKey().getRuleName();
  85                 flowMatches.add(AclServiceUtils.buildLPortTagMatch(lportTag));
  86
  87                 programAllowSynRules(dpId, flowName, flowMatches, addOrRemove);
  88             }
  89         }
  90     }
  91
  92     private void programAllowSynRules(BigInteger dpId, String origFlowName,
  93             List<MatchInfoBase> origFlowMatches, int addFlow) {
  94         List<MatchInfoBase> flowMatches = new ArrayList<>();
  95         flowMatches.addAll(origFlowMatches);
  96         flowMatches.add(new MatchInfo(MatchFieldType.tcp_flags, new long[] { AclConstants.TCP_FLAG_SYN }));
  97
  98         List<ActionInfo> actionsInfos = new ArrayList<>();
  99         List<InstructionInfo> instructions = getDispatcherTableResubmitInstructions(actionsInfos);
 100
 101         String flowName = "SYN_" + origFlowName;
 102         syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName, AclConstants.PROTO_MATCH_SYN_ALLOW_PRIORITY,
 103                 "ACL_SYN_", 0, 0, AclConstants.COOKIE_ACL_BASE, flowMatches, instructions, addFlow);
 104         String oper = getOperAsString(addFlow);
 105         LOG.debug("{} allow syn packet flow {}", oper, flowName);
 106     }
 107
 108 }