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 | |
Carmelo Cascone | 25f1888 | 2016-06-14 19:16:50 -0700 | [diff] [blame^] | 121 | List<Bmv2ParsedTableEntry> installedEntries; |
| 122 | try { |
| 123 | installedEntries = deviceAgent.getTableEntries(table.name()); |
| 124 | } catch (Bmv2RuntimeException e) { |
| 125 | log.warn("Failed to get table entries of table {} of {}: {}", table.name(), deviceId, e.explain()); |
| 126 | return; |
| 127 | } |
| 128 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 129 | installedEntries.forEach(parsedEntry -> { |
| 130 | Bmv2TableEntryReference entryRef = new Bmv2TableEntryReference(deviceId, |
| 131 | table.name(), |
| 132 | parsedEntry.matchKey()); |
| 133 | ENTRY_LOCKS.compute(entryRef, (key, value) -> { |
| 134 | |
| 135 | Bmv2FlowRuleWrapper frWrapper = tableEntryService.lookupEntryReference(entryRef); |
| 136 | |
| 137 | if (frWrapper == null) { |
| 138 | log.warn("missing reference from table entry service, BUG? " + |
| 139 | "deviceId={}, tableName={}, matchKey={}", |
| 140 | deviceId, table.name(), entryRef.matchKey()); |
| 141 | return null; |
| 142 | } |
| 143 | |
| 144 | long remoteEntryId = parsedEntry.entryId(); |
| 145 | long localEntryId = frWrapper.entryId(); |
| 146 | |
| 147 | if (remoteEntryId != localEntryId) { |
| 148 | log.warn("getFlowEntries(): inconsistent entry id! BUG? Updating it... remote={}, local={}", |
| 149 | remoteEntryId, localEntryId); |
| 150 | frWrapper = new Bmv2FlowRuleWrapper(frWrapper.rule(), remoteEntryId, |
| 151 | frWrapper.creationDate()); |
| 152 | tableEntryService.bindEntryReference(entryRef, frWrapper); |
| 153 | } |
| 154 | |
| 155 | long bytes = 0L; |
| 156 | long packets = 0L; |
| 157 | |
| 158 | if (table.hasCounters()) { |
| 159 | // Read counter values from device. |
| 160 | try { |
| 161 | Pair<Long, Long> counterValue = deviceAgent.readTableEntryCounter(table.name(), |
| 162 | remoteEntryId); |
| 163 | bytes = counterValue.getLeft(); |
| 164 | packets = counterValue.getRight(); |
| 165 | } catch (Bmv2RuntimeException e) { |
| 166 | log.warn("Unable to get counters for entry {}/{} of device {}: {}", |
| 167 | table.name(), remoteEntryId, deviceId, e.explain()); |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 168 | } |
| 169 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 170 | |
| 171 | FlowEntry entry = new DefaultFlowEntry(frWrapper.rule(), ADDED, frWrapper.lifeInSeconds(), |
| 172 | packets, bytes); |
| 173 | entryList.add(entry); |
| 174 | return true; |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 175 | }); |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 176 | |
| 177 | }); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 178 | }); |
| 179 | |
| 180 | return Collections.unmodifiableCollection(entryList); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | @Override |
| 184 | public Collection<FlowRule> applyFlowRules(Collection<FlowRule> rules) { |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 185 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 186 | return processFlowRules(rules, Operation.APPLY); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | @Override |
| 190 | public Collection<FlowRule> removeFlowRules(Collection<FlowRule> rules) { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 191 | |
| 192 | return processFlowRules(rules, Operation.REMOVE); |
| 193 | } |
| 194 | |
| 195 | private Collection<FlowRule> processFlowRules(Collection<FlowRule> rules, Operation operation) { |
| 196 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 197 | if (!init()) { |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 198 | return Collections.emptyList(); |
| 199 | } |
| 200 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 201 | DeviceId deviceId = handler().data().deviceId(); |
| 202 | |
| 203 | Bmv2DeviceAgent deviceAgent; |
| 204 | try { |
| 205 | deviceAgent = controller.getAgent(deviceId); |
| 206 | } catch (Bmv2RuntimeException e) { |
| 207 | log.error("Failed to get BMv2 device agent: {}", e.explain()); |
| 208 | return Collections.emptyList(); |
| 209 | } |
| 210 | |
| 211 | Bmv2DeviceContext context = contextService.getContext(deviceId); |
| 212 | if (context == null) { |
| 213 | log.error("Unable to get device context for {}", deviceId); |
| 214 | return Collections.emptyList(); |
| 215 | } |
| 216 | |
| 217 | Bmv2FlowRuleTranslator translator = tableEntryService.getFlowRuleTranslator(); |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 218 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 219 | List<FlowRule> processedFlowRules = Lists.newArrayList(); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 220 | |
| 221 | for (FlowRule rule : rules) { |
| 222 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 223 | Bmv2TableEntry bmv2Entry; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 224 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 225 | try { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 226 | bmv2Entry = translator.translate(rule, context); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 227 | } catch (Bmv2FlowRuleTranslatorException e) { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 228 | log.warn("Unable to translate flow rule: {} - {}", e.getMessage(), rule); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 229 | continue; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 230 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 231 | |
| 232 | String tableName = bmv2Entry.tableName(); |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 233 | Bmv2TableEntryReference entryRef = new Bmv2TableEntryReference(deviceId, tableName, bmv2Entry.matchKey()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 234 | |
| 235 | /* |
| 236 | From here on threads are synchronized over entryKey, i.e. serialize operations |
| 237 | over the same matchKey of a specific table and device. |
| 238 | */ |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 239 | ENTRY_LOCKS.compute(entryRef, (key, value) -> { |
| 240 | // Get from store |
| 241 | Bmv2FlowRuleWrapper frWrapper = tableEntryService.lookupEntryReference(entryRef); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 242 | try { |
| 243 | if (operation == Operation.APPLY) { |
| 244 | // Apply entry |
| 245 | long entryId; |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 246 | if (frWrapper != null) { |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 247 | // Existing entry. |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 248 | entryId = frWrapper.entryId(); |
| 249 | // Tentatively delete entry before re-adding. |
| 250 | // It might not exist on device due to inconsistencies. |
| 251 | silentlyRemove(deviceAgent, entryRef.tableName(), entryId); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 252 | } |
Carmelo Cascone | a2f510e | 2016-05-03 18:36:45 -0700 | [diff] [blame] | 253 | // Add entry. |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 254 | entryId = doAddEntry(deviceAgent, bmv2Entry); |
| 255 | frWrapper = new Bmv2FlowRuleWrapper(rule, entryId, new Date()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 256 | } else { |
| 257 | // Remove entry |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 258 | if (frWrapper == null) { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 259 | // Entry not found in map, how come? |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 260 | forceRemove(deviceAgent, entryRef.tableName(), entryRef.matchKey()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 261 | } else { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 262 | long entryId = frWrapper.entryId(); |
| 263 | doRemove(deviceAgent, entryRef.tableName(), entryId, entryRef.matchKey()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 264 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 265 | frWrapper = null; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 266 | } |
| 267 | // If here, no exceptions... things went well :) |
| 268 | processedFlowRules.add(rule); |
| 269 | } catch (Bmv2RuntimeException e) { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 270 | log.warn("Unable to {} flow rule: {}", operation.name(), e.explain()); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 271 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 272 | // Update binding in table entry service. |
| 273 | if (frWrapper != null) { |
| 274 | tableEntryService.bindEntryReference(entryRef, frWrapper); |
| 275 | return true; |
| 276 | } else { |
| 277 | tableEntryService.unbindEntryReference(entryRef); |
| 278 | return null; |
| 279 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 280 | }); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 281 | } |
| 282 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 283 | return processedFlowRules; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 284 | } |
| 285 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 286 | private long doAddEntry(Bmv2DeviceAgent agent, Bmv2TableEntry entry) throws Bmv2RuntimeException { |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 287 | try { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 288 | return agent.addTableEntry(entry); |
| 289 | } catch (Bmv2RuntimeException e) { |
| 290 | if (e.getCode() != TABLE_DUPLICATE_ENTRY) { |
| 291 | forceRemove(agent, entry.tableName(), entry.matchKey()); |
| 292 | return agent.addTableEntry(entry); |
| 293 | } else { |
| 294 | throw e; |
| 295 | } |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 296 | } |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 297 | } |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 298 | |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 299 | private void doRemove(Bmv2DeviceAgent agent, String tableName, long entryId, Bmv2MatchKey matchKey) |
| 300 | throws Bmv2RuntimeException { |
| 301 | try { |
| 302 | agent.deleteTableEntry(tableName, entryId); |
| 303 | } catch (Bmv2RuntimeException e) { |
| 304 | if (e.getCode() == TABLE_INVALID_HANDLE || e.getCode() == TABLE_EXPIRED_HANDLE) { |
| 305 | // entry is not there with the declared ID, try with a forced remove. |
| 306 | forceRemove(agent, tableName, matchKey); |
| 307 | } else { |
| 308 | throw e; |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | private void forceRemove(Bmv2DeviceAgent agent, String tableName, Bmv2MatchKey matchKey) |
| 314 | throws Bmv2RuntimeException { |
| 315 | // Find the entryID (expensive call!) |
Carmelo Cascone | 25f1888 | 2016-06-14 19:16:50 -0700 | [diff] [blame^] | 316 | for (Bmv2ParsedTableEntry pEntry : agent.getTableEntries(tableName)) { |
Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 317 | if (pEntry.matchKey().equals(matchKey)) { |
| 318 | // Remove entry and drop exceptions. |
| 319 | silentlyRemove(agent, tableName, pEntry.entryId()); |
| 320 | break; |
| 321 | } |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | private void silentlyRemove(Bmv2DeviceAgent agent, String tableName, long entryId) { |
| 326 | try { |
| 327 | agent.deleteTableEntry(tableName, entryId); |
| 328 | } catch (Bmv2RuntimeException e) { |
| 329 | // do nothing |
| 330 | } |
Carmelo Cascone | d4e7a77 | 2016-05-03 11:21:29 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 333 | private enum Operation { |
| 334 | APPLY, REMOVE |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 335 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 336 | } |