Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 1 | /* |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Laboratory |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onosproject.drivers.bmv2; |
| 18 | |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 19 | import com.google.common.collect.Lists; |
| 20 | import com.google.common.collect.Maps; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 21 | import org.apache.commons.lang3.tuple.Pair; |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 22 | import org.onosproject.bmv2.api.context.Bmv2Configuration; |
| 23 | import org.onosproject.bmv2.api.context.Bmv2DeviceContext; |
| 24 | import org.onosproject.bmv2.api.context.Bmv2FlowRuleTranslator; |
| 25 | import org.onosproject.bmv2.api.context.Bmv2FlowRuleTranslatorException; |
| 26 | import org.onosproject.bmv2.api.context.Bmv2Interpreter; |
| 27 | import org.onosproject.bmv2.api.runtime.Bmv2DeviceAgent; |
| 28 | import org.onosproject.bmv2.api.runtime.Bmv2FlowRuleWrapper; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 29 | import org.onosproject.bmv2.api.runtime.Bmv2MatchKey; |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 30 | import org.onosproject.bmv2.api.runtime.Bmv2ParsedTableEntry; |
Carmelo Cascone | aa8b629 | 2016-04-13 14:27:06 -0700 | [diff] [blame] | 31 | import org.onosproject.bmv2.api.runtime.Bmv2RuntimeException; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 32 | import org.onosproject.bmv2.api.runtime.Bmv2TableEntry; |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 33 | import org.onosproject.bmv2.api.runtime.Bmv2TableEntryReference; |
| 34 | import org.onosproject.bmv2.api.service.Bmv2Controller; |
| 35 | import org.onosproject.bmv2.api.service.Bmv2DeviceContextService; |
| 36 | import org.onosproject.bmv2.api.service.Bmv2TableEntryService; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 37 | import org.onosproject.net.DeviceId; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 38 | import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| 39 | import org.onosproject.net.flow.DefaultFlowEntry; |
| 40 | import org.onosproject.net.flow.FlowEntry; |
| 41 | import org.onosproject.net.flow.FlowRule; |
| 42 | import org.onosproject.net.flow.FlowRuleProgrammable; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 43 | import org.slf4j.Logger; |
| 44 | import org.slf4j.LoggerFactory; |
| 45 | |
| 46 | import java.util.Collection; |
| 47 | import java.util.Collections; |
Carmelo Cascone | f8cf288 | 2016-05-04 14:06:17 -0700 | [diff] [blame] | 48 | import java.util.Date; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 49 | import java.util.List; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 50 | import java.util.concurrent.ConcurrentMap; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 51 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 52 | import static org.onosproject.bmv2.api.runtime.Bmv2RuntimeException.Code.*; |
Carmelo Cascone | f8cf288 | 2016-05-04 14:06:17 -0700 | [diff] [blame] | 53 | import static org.onosproject.net.flow.FlowEntry.FlowEntryState.ADDED; |
| 54 | |
Carmelo Cascone | e912164 | 2016-04-27 17:02:38 -0700 | [diff] [blame] | 55 | /** |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 56 | * Implementation of the flow rule programmable behaviour for BMv2. |
Carmelo Cascone | e912164 | 2016-04-27 17:02:38 -0700 | [diff] [blame] | 57 | */ |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 58 | public class Bmv2FlowRuleProgrammable extends AbstractHandlerBehaviour implements FlowRuleProgrammable { |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 59 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 60 | private final Logger log = LoggerFactory.getLogger(this.getClass()); |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 61 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 62 | // Needed to synchronize operations over the same table entry. |
| 63 | private static final ConcurrentMap<Bmv2TableEntryReference, Boolean> ENTRY_LOCKS = Maps.newConcurrentMap(); |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 64 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 65 | private Bmv2Controller controller; |
| 66 | private Bmv2TableEntryService tableEntryService; |
| 67 | private Bmv2DeviceContextService contextService; |
| 68 | |
| 69 | private boolean init() { |
| 70 | controller = handler().get(Bmv2Controller.class); |
| 71 | tableEntryService = handler().get(Bmv2TableEntryService.class); |
| 72 | contextService = handler().get(Bmv2DeviceContextService.class); |
| 73 | if (controller == null) { |
| 74 | log.warn("Failed to get a BMv2 controller"); |
| 75 | return false; |
| 76 | } |
| 77 | if (tableEntryService == null) { |
| 78 | log.warn("Failed to get a BMv2 table entry service"); |
| 79 | return false; |
| 80 | } |
| 81 | if (contextService == null) { |
| 82 | log.warn("Failed to get a BMv2 device context service"); |
| 83 | return false; |
| 84 | } |
| 85 | return true; |
| 86 | } |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 87 | |
| 88 | @Override |
| 89 | public Collection<FlowEntry> getFlowEntries() { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 90 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 91 | if (!init()) { |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 92 | return Collections.emptyList(); |
| 93 | } |
| 94 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 95 | DeviceId deviceId = handler().data().deviceId(); |
| 96 | |
| 97 | Bmv2DeviceAgent deviceAgent; |
| 98 | try { |
| 99 | deviceAgent = controller.getAgent(deviceId); |
| 100 | } catch (Bmv2RuntimeException e) { |
| 101 | log.error("Failed to get BMv2 device agent: {}", e.explain()); |
| 102 | return Collections.emptyList(); |
| 103 | } |
| 104 | |
| 105 | Bmv2DeviceContext context = contextService.getContext(deviceId); |
| 106 | if (context == null) { |
| 107 | log.warn("Unable to get device context for {}", deviceId); |
| 108 | } |
| 109 | |
| 110 | Bmv2Interpreter interpreter = context.interpreter(); |
| 111 | Bmv2Configuration configuration = context.configuration(); |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 112 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 113 | List<FlowEntry> entryList = Lists.newArrayList(); |
| 114 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 115 | configuration.tables().forEach(table -> { |
| 116 | // For each table in the configuration AND exposed by the interpreter. |
| 117 | if (!interpreter.tableIdMap().inverse().containsKey(table.name())) { |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | // Bmv2 doesn't support proper polling for table entries, but only a string based table dump. |
| 122 | // The trick here is to first dump the entries currently installed in the device for a given table, |
| 123 | // and then query a service for the corresponding, previously applied, flow rule. |
| 124 | List<Bmv2ParsedTableEntry> installedEntries = tableEntryService.getTableEntries(deviceId, table.name()); |
| 125 | installedEntries.forEach(parsedEntry -> { |
| 126 | Bmv2TableEntryReference entryRef = new Bmv2TableEntryReference(deviceId, |
| 127 | table.name(), |
| 128 | parsedEntry.matchKey()); |
| 129 | ENTRY_LOCKS.compute(entryRef, (key, value) -> { |
| 130 | |
| 131 | Bmv2FlowRuleWrapper frWrapper = tableEntryService.lookupEntryReference(entryRef); |
| 132 | |
| 133 | if (frWrapper == null) { |
| 134 | log.warn("missing reference from table entry service, BUG? " + |
| 135 | "deviceId={}, tableName={}, matchKey={}", |
| 136 | deviceId, table.name(), entryRef.matchKey()); |
| 137 | return null; |
| 138 | } |
| 139 | |
| 140 | long remoteEntryId = parsedEntry.entryId(); |
| 141 | long localEntryId = frWrapper.entryId(); |
| 142 | |
| 143 | if (remoteEntryId != localEntryId) { |
| 144 | log.warn("getFlowEntries(): inconsistent entry id! BUG? Updating it... remote={}, local={}", |
| 145 | remoteEntryId, localEntryId); |
| 146 | frWrapper = new Bmv2FlowRuleWrapper(frWrapper.rule(), remoteEntryId, |
| 147 | frWrapper.creationDate()); |
| 148 | tableEntryService.bindEntryReference(entryRef, frWrapper); |
| 149 | } |
| 150 | |
| 151 | long bytes = 0L; |
| 152 | long packets = 0L; |
| 153 | |
| 154 | if (table.hasCounters()) { |
| 155 | // Read counter values from device. |
| 156 | try { |
| 157 | Pair<Long, Long> counterValue = deviceAgent.readTableEntryCounter(table.name(), |
| 158 | remoteEntryId); |
| 159 | bytes = counterValue.getLeft(); |
| 160 | packets = counterValue.getRight(); |
| 161 | } catch (Bmv2RuntimeException e) { |
| 162 | log.warn("Unable to get counters for entry {}/{} of device {}: {}", |
| 163 | table.name(), remoteEntryId, deviceId, e.explain()); |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 164 | } |
| 165 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 166 | |
| 167 | FlowEntry entry = new DefaultFlowEntry(frWrapper.rule(), ADDED, frWrapper.lifeInSeconds(), |
| 168 | packets, bytes); |
| 169 | entryList.add(entry); |
| 170 | return true; |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 171 | }); |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 172 | |
| 173 | }); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 174 | }); |
| 175 | |
| 176 | return Collections.unmodifiableCollection(entryList); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | @Override |
| 180 | public Collection<FlowRule> applyFlowRules(Collection<FlowRule> rules) { |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 181 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 182 | return processFlowRules(rules, Operation.APPLY); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | @Override |
| 186 | public Collection<FlowRule> removeFlowRules(Collection<FlowRule> rules) { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 187 | |
| 188 | return processFlowRules(rules, Operation.REMOVE); |
| 189 | } |
| 190 | |
| 191 | private Collection<FlowRule> processFlowRules(Collection<FlowRule> rules, Operation operation) { |
| 192 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 193 | if (!init()) { |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 194 | return Collections.emptyList(); |
| 195 | } |
| 196 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 197 | DeviceId deviceId = handler().data().deviceId(); |
| 198 | |
| 199 | Bmv2DeviceAgent deviceAgent; |
| 200 | try { |
| 201 | deviceAgent = controller.getAgent(deviceId); |
| 202 | } catch (Bmv2RuntimeException e) { |
| 203 | log.error("Failed to get BMv2 device agent: {}", e.explain()); |
| 204 | return Collections.emptyList(); |
| 205 | } |
| 206 | |
| 207 | Bmv2DeviceContext context = contextService.getContext(deviceId); |
| 208 | if (context == null) { |
| 209 | log.error("Unable to get device context for {}", deviceId); |
| 210 | return Collections.emptyList(); |
| 211 | } |
| 212 | |
| 213 | Bmv2FlowRuleTranslator translator = tableEntryService.getFlowRuleTranslator(); |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 214 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 215 | List<FlowRule> processedFlowRules = Lists.newArrayList(); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 216 | |
| 217 | for (FlowRule rule : rules) { |
| 218 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 219 | Bmv2TableEntry bmv2Entry; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 220 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 221 | try { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 222 | bmv2Entry = translator.translate(rule, context); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 223 | } catch (Bmv2FlowRuleTranslatorException e) { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 224 | log.warn("Unable to translate flow rule: {} - {}", e.getMessage(), rule); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 225 | continue; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 226 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 227 | |
| 228 | String tableName = bmv2Entry.tableName(); |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 229 | Bmv2TableEntryReference entryRef = new Bmv2TableEntryReference(deviceId, tableName, bmv2Entry.matchKey()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 230 | |
| 231 | /* |
| 232 | From here on threads are synchronized over entryKey, i.e. serialize operations |
| 233 | over the same matchKey of a specific table and device. |
| 234 | */ |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 235 | ENTRY_LOCKS.compute(entryRef, (key, value) -> { |
| 236 | // Get from store |
| 237 | Bmv2FlowRuleWrapper frWrapper = tableEntryService.lookupEntryReference(entryRef); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 238 | try { |
| 239 | if (operation == Operation.APPLY) { |
| 240 | // Apply entry |
| 241 | long entryId; |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 242 | if (frWrapper != null) { |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 243 | // Existing entry. |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 244 | entryId = frWrapper.entryId(); |
| 245 | // Tentatively delete entry before re-adding. |
| 246 | // It might not exist on device due to inconsistencies. |
| 247 | silentlyRemove(deviceAgent, entryRef.tableName(), entryId); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 248 | } |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 249 | // Add entry. |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 250 | entryId = doAddEntry(deviceAgent, bmv2Entry); |
| 251 | frWrapper = new Bmv2FlowRuleWrapper(rule, entryId, new Date()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 252 | } else { |
| 253 | // Remove entry |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 254 | if (frWrapper == null) { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 255 | // Entry not found in map, how come? |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 256 | forceRemove(deviceAgent, entryRef.tableName(), entryRef.matchKey()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 257 | } else { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 258 | long entryId = frWrapper.entryId(); |
| 259 | doRemove(deviceAgent, entryRef.tableName(), entryId, entryRef.matchKey()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 260 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 261 | frWrapper = null; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 262 | } |
| 263 | // If here, no exceptions... things went well :) |
| 264 | processedFlowRules.add(rule); |
| 265 | } catch (Bmv2RuntimeException e) { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 266 | log.warn("Unable to {} flow rule: {}", operation.name(), e.explain()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 267 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 268 | // Update binding in table entry service. |
| 269 | if (frWrapper != null) { |
| 270 | tableEntryService.bindEntryReference(entryRef, frWrapper); |
| 271 | return true; |
| 272 | } else { |
| 273 | tableEntryService.unbindEntryReference(entryRef); |
| 274 | return null; |
| 275 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 276 | }); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 277 | } |
| 278 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 279 | return processedFlowRules; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 280 | } |
| 281 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 282 | private long doAddEntry(Bmv2DeviceAgent agent, Bmv2TableEntry entry) throws Bmv2RuntimeException { |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 283 | try { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 284 | return agent.addTableEntry(entry); |
| 285 | } catch (Bmv2RuntimeException e) { |
| 286 | if (e.getCode() != TABLE_DUPLICATE_ENTRY) { |
| 287 | forceRemove(agent, entry.tableName(), entry.matchKey()); |
| 288 | return agent.addTableEntry(entry); |
| 289 | } else { |
| 290 | throw e; |
| 291 | } |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 292 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 293 | } |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 294 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame^] | 295 | private void doRemove(Bmv2DeviceAgent agent, String tableName, long entryId, Bmv2MatchKey matchKey) |
| 296 | throws Bmv2RuntimeException { |
| 297 | try { |
| 298 | agent.deleteTableEntry(tableName, entryId); |
| 299 | } catch (Bmv2RuntimeException e) { |
| 300 | if (e.getCode() == TABLE_INVALID_HANDLE || e.getCode() == TABLE_EXPIRED_HANDLE) { |
| 301 | // entry is not there with the declared ID, try with a forced remove. |
| 302 | forceRemove(agent, tableName, matchKey); |
| 303 | } else { |
| 304 | throw e; |
| 305 | } |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | private void forceRemove(Bmv2DeviceAgent agent, String tableName, Bmv2MatchKey matchKey) |
| 310 | throws Bmv2RuntimeException { |
| 311 | // Find the entryID (expensive call!) |
| 312 | for (Bmv2ParsedTableEntry pEntry : tableEntryService.getTableEntries(agent.deviceId(), tableName)) { |
| 313 | if (pEntry.matchKey().equals(matchKey)) { |
| 314 | // Remove entry and drop exceptions. |
| 315 | silentlyRemove(agent, tableName, pEntry.entryId()); |
| 316 | break; |
| 317 | } |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | private void silentlyRemove(Bmv2DeviceAgent agent, String tableName, long entryId) { |
| 322 | try { |
| 323 | agent.deleteTableEntry(tableName, entryId); |
| 324 | } catch (Bmv2RuntimeException e) { |
| 325 | // do nothing |
| 326 | } |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 327 | } |
| 328 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 329 | private enum Operation { |
| 330 | APPLY, REMOVE |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 331 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 332 | } |