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; |
| 22 | import org.apache.commons.lang3.tuple.Triple; |
Carmelo Cascone | 37d5dbf | 2016-04-18 15:15:48 -0700 | [diff] [blame] | 23 | import org.onosproject.bmv2.api.runtime.Bmv2Client; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 24 | import org.onosproject.bmv2.api.runtime.Bmv2MatchKey; |
Carmelo Cascone | aa8b629 | 2016-04-13 14:27:06 -0700 | [diff] [blame] | 25 | import org.onosproject.bmv2.api.runtime.Bmv2RuntimeException; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 26 | import org.onosproject.bmv2.api.runtime.Bmv2TableEntry; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 27 | import org.onosproject.bmv2.ctl.Bmv2ThriftClient; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 28 | import org.onosproject.drivers.bmv2.translators.Bmv2DefaultFlowRuleTranslator; |
| 29 | import org.onosproject.drivers.bmv2.translators.Bmv2FlowRuleTranslator; |
| 30 | import org.onosproject.drivers.bmv2.translators.Bmv2FlowRuleTranslatorException; |
| 31 | import org.onosproject.net.DeviceId; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 32 | import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| 33 | import org.onosproject.net.flow.DefaultFlowEntry; |
| 34 | import org.onosproject.net.flow.FlowEntry; |
| 35 | import org.onosproject.net.flow.FlowRule; |
| 36 | import org.onosproject.net.flow.FlowRuleProgrammable; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 37 | import org.slf4j.Logger; |
| 38 | import org.slf4j.LoggerFactory; |
| 39 | |
| 40 | import java.util.Collection; |
| 41 | import java.util.Collections; |
| 42 | import java.util.List; |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 43 | import java.util.concurrent.ConcurrentMap; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 44 | |
Carmelo Cascone | e912164 | 2016-04-27 17:02:38 -0700 | [diff] [blame^] | 45 | /** |
| 46 | * Flow rule programmable device behaviour implementation for BMv2. |
| 47 | */ |
| 48 | public class Bmv2FlowRuleProgrammable extends AbstractHandlerBehaviour |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 49 | implements FlowRuleProgrammable { |
| 50 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 51 | private static final Logger LOG = |
Carmelo Cascone | e912164 | 2016-04-27 17:02:38 -0700 | [diff] [blame^] | 52 | LoggerFactory.getLogger(Bmv2FlowRuleProgrammable.class); |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 53 | // There's no Bmv2 client method to poll flow entries from the device device. gitNeed a local store. |
| 54 | private static final ConcurrentMap<Triple<DeviceId, String, Bmv2MatchKey>, Pair<Long, FlowEntry>> |
| 55 | ENTRIES_MAP = Maps.newConcurrentMap(); |
| 56 | private static final Bmv2FlowRuleTranslator TRANSLATOR = new Bmv2DefaultFlowRuleTranslator(); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 57 | |
| 58 | @Override |
| 59 | public Collection<FlowEntry> getFlowEntries() { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 60 | |
| 61 | DeviceId deviceId = handler().data().deviceId(); |
| 62 | |
| 63 | List<FlowEntry> entryList = Lists.newArrayList(); |
| 64 | |
| 65 | // FIXME: improve this, e.g. might store a separate Map<DeviceId, Collection<FlowEntry>> |
| 66 | ENTRIES_MAP.forEach((key, value) -> { |
| 67 | if (key.getLeft() == deviceId && value != null) { |
| 68 | entryList.add(value.getRight()); |
| 69 | } |
| 70 | }); |
| 71 | |
| 72 | return Collections.unmodifiableCollection(entryList); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public Collection<FlowRule> applyFlowRules(Collection<FlowRule> rules) { |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 77 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 78 | return processFlowRules(rules, Operation.APPLY); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | @Override |
| 82 | public Collection<FlowRule> removeFlowRules(Collection<FlowRule> rules) { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 83 | |
| 84 | return processFlowRules(rules, Operation.REMOVE); |
| 85 | } |
| 86 | |
| 87 | private Collection<FlowRule> processFlowRules(Collection<FlowRule> rules, Operation operation) { |
| 88 | |
| 89 | DeviceId deviceId = handler().data().deviceId(); |
| 90 | |
Carmelo Cascone | 37d5dbf | 2016-04-18 15:15:48 -0700 | [diff] [blame] | 91 | Bmv2Client deviceClient; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 92 | try { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 93 | deviceClient = Bmv2ThriftClient.of(deviceId); |
Carmelo Cascone | aa8b629 | 2016-04-13 14:27:06 -0700 | [diff] [blame] | 94 | } catch (Bmv2RuntimeException e) { |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 95 | LOG.error("Failed to connect to Bmv2 device", e); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 96 | return Collections.emptyList(); |
| 97 | } |
| 98 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 99 | List<FlowRule> processedFlowRules = Lists.newArrayList(); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 100 | |
| 101 | for (FlowRule rule : rules) { |
| 102 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 103 | Bmv2TableEntry bmv2Entry; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 104 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 105 | try { |
| 106 | bmv2Entry = TRANSLATOR.translate(rule); |
| 107 | } catch (Bmv2FlowRuleTranslatorException e) { |
| 108 | LOG.error("Unable to translate flow rule: {}", e.getMessage()); |
| 109 | continue; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 110 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 111 | |
| 112 | String tableName = bmv2Entry.tableName(); |
| 113 | Triple<DeviceId, String, Bmv2MatchKey> entryKey = Triple.of(deviceId, tableName, bmv2Entry.matchKey()); |
| 114 | |
| 115 | /* |
| 116 | From here on threads are synchronized over entryKey, i.e. serialize operations |
| 117 | over the same matchKey of a specific table and device. |
| 118 | */ |
| 119 | ENTRIES_MAP.compute(entryKey, (key, value) -> { |
| 120 | try { |
| 121 | if (operation == Operation.APPLY) { |
| 122 | // Apply entry |
| 123 | long entryId; |
| 124 | if (value == null) { |
| 125 | // New entry |
| 126 | entryId = deviceClient.addTableEntry(bmv2Entry); |
| 127 | } else { |
| 128 | // Existing entry |
| 129 | entryId = value.getKey(); |
| 130 | // FIXME: check if priority or timeout changed |
| 131 | // In this case we should to re-add the entry (not modify) |
| 132 | deviceClient.modifyTableEntry(tableName, entryId, bmv2Entry.action()); |
| 133 | } |
| 134 | // TODO: evaluate flow entry life, bytes and packets |
| 135 | FlowEntry flowEntry = new DefaultFlowEntry( |
| 136 | rule, FlowEntry.FlowEntryState.ADDED, 0, 0, 0); |
| 137 | value = Pair.of(entryId, flowEntry); |
| 138 | } else { |
| 139 | // Remove entry |
| 140 | if (value == null) { |
| 141 | // Entry not found in map, how come? |
| 142 | LOG.debug("Trying to remove entry, but entry ID not found: " + entryKey); |
| 143 | } else { |
| 144 | deviceClient.deleteTableEntry(tableName, value.getKey()); |
| 145 | value = null; |
| 146 | } |
| 147 | } |
| 148 | // If here, no exceptions... things went well :) |
| 149 | processedFlowRules.add(rule); |
| 150 | } catch (Bmv2RuntimeException e) { |
| 151 | LOG.error("Unable to " + operation.name().toLowerCase() + " flow rule", e); |
| 152 | } catch (Exception e) { |
| 153 | LOG.error("Uncaught exception while processing flow rule", e); |
| 154 | } |
| 155 | return value; |
| 156 | }); |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 157 | } |
| 158 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 159 | return processedFlowRules; |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 160 | } |
| 161 | |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 162 | private enum Operation { |
| 163 | APPLY, REMOVE |
Carmelo Cascone | 2ea177b | 2016-02-25 18:38:42 -0800 | [diff] [blame] | 164 | } |
Carmelo Cascone | 2954f13 | 2016-04-15 10:26:40 -0700 | [diff] [blame] | 165 | } |