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
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.genius.mdsalutil.ActionInfo;
  17 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  18 import org.opendaylight.genius.mdsalutil.MatchFieldType;
  19 import org.opendaylight.genius.mdsalutil.MatchInfo;
  20 import org.opendaylight.genius.mdsalutil.MatchInfoBase;
  21 import org.opendaylight.genius.mdsalutil.NwConstants;
  22 import org.opendaylight.genius.mdsalutil.NxMatchFieldType;
  23 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  24 import org.opendaylight.netvirt.aclservice.api.AclServiceManager.Action;
  25 import org.opendaylight.netvirt.aclservice.utils.AclConstants;
  26 import org.opendaylight.netvirt.aclservice.utils.AclDataUtil;
  27 import org.opendaylight.netvirt.aclservice.utils.AclServiceOFFlowBuilder;
  28 import org.opendaylight.netvirt.aclservice.utils.AclServiceUtils;
  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;
  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;
  31 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;
  32 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;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.DirectionEgress;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.SecurityRuleAttr;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.interfaces._interface.AllowedAddressPairs;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 /**
  40  * Provides the stateless implementation for egress (w.r.t VM) ACL service.
  41  *
  42  * <p>
  43  * Note: Table names used are w.r.t switch. Hence, switch ingress is VM egress
  44  * and vice versa.
  45  */
  46 public class StatelessEgressAclServiceImpl extends AbstractEgressAclServiceImpl {
  47
  48     private static final Logger LOG = LoggerFactory.getLogger(StatelessEgressAclServiceImpl.class);
  49
  50     public StatelessEgressAclServiceImpl(DataBroker dataBroker, IMdsalApiManager mdsalManager, AclDataUtil aclDataUtil,
  51             AclServiceUtils aclServiceUtils) {
  52         super(dataBroker, mdsalManager, aclDataUtil, aclServiceUtils);
  53     }
  54
  55     @Override
  56     protected void programSpecificFixedRules(BigInteger dpid, String dhcpMacAddress,
  57             List<AllowedAddressPairs> allowedAddresses, int lportTag, String portId, Action action, int addOrRemove) {
  58     }
  59
  60     @Override
  61     protected String syncSpecificAclFlow(BigInteger dpId, int lportTag, int addOrRemove, Ace ace, String portId,
  62             Map<String, List<MatchInfoBase>> flowMap, String flowName) {
  63         // Not in use here. programAceRule function is overridden.
  64         return null;
  65     }
  66
  67     @Override
  68     protected void programAceRule(BigInteger dpId, int lportTag, int addOrRemove, Ace ace, String portId,
  69             List<AllowedAddressPairs> syncAllowedAddresses) {
  70         SecurityRuleAttr aceAttr = AclServiceUtils.getAccesssListAttributes(ace);
  71         if (!aceAttr.getDirection().equals(DirectionEgress.class)) {
  72             return;
  73         }
  74         Matches matches = ace.getMatches();
  75         AceType aceType = matches.getAceType();
  76         Map<String, List<MatchInfoBase>> flowMap = null;
  77         Short protocol = null;
  78
  79         if (aceType instanceof AceIp) {
  80             protocol = ((AceIp)aceType).getProtocol();
  81             flowMap = AclServiceOFFlowBuilder.programIpFlow(matches);
  82         }
  83         if (null == flowMap) {
  84             LOG.error("Failed to apply ACL {}", ace.getKey());
  85             return;
  86         }
  87         for (Map.Entry<String, List<MatchInfoBase>> flow : flowMap.entrySet()) {
  88             String flowName = flow.getKey();
  89             List<MatchInfoBase> flowMatches = flow.getValue();
  90             boolean hasTcpMatch = AclServiceUtils.containsMatchFieldType(flowMatches,
  91                     NxMatchFieldType.nx_tcp_dst_with_mask) || AclServiceUtils.containsMatchFieldType(flowMatches,
  92                             NxMatchFieldType.nx_tcp_src_with_mask);
  93             if (hasTcpMatch || protocol == null) {
  94                 flowName += "Egress" + lportTag + ace.getKey().getRuleName();
  95                 flowMatches.add(AclServiceUtils.buildLPortTagMatch(lportTag));
  96
  97                 programAllowSynRules(dpId, flowName, flowMatches, addOrRemove, protocol);
  98             }
  99         }
 100     }
 101
 102     private void programAllowSynRules(BigInteger dpId, String origFlowName,
 103             List<MatchInfoBase> origFlowMatches, int addFlow, Short protocol) {
 104         List<MatchInfoBase> flowMatches = new ArrayList<>();
 105         flowMatches.addAll(origFlowMatches);
 106         if (new Short((short) NwConstants.IP_PROT_TCP).equals(protocol)) {
 107             flowMatches.add(new MatchInfo(MatchFieldType.tcp_flags, new long[] { AclConstants.TCP_FLAG_SYN }));
 108         }
 109
 110         List<ActionInfo> actionsInfos = new ArrayList<>();
 111         List<InstructionInfo> instructions = getDispatcherTableResubmitInstructions(actionsInfos);
 112
 113         String flowName = "SYN_" + origFlowName;
 114         syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName, AclConstants.PROTO_MATCH_SYN_ALLOW_PRIORITY,
 115                 "ACL_SYN_", 0, 0, AclConstants.COOKIE_ACL_BASE, flowMatches, instructions, addFlow);
 116         String oper = getOperAsString(addFlow);
 117         LOG.debug("{} allow syn packet flow {}", oper, flowName);
 118     }
 119
 120 }