Yi Tseng | fa4a1c7 | 2017-11-03 10:22:38 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Foundation |
| 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.pipelines.fabric; |
| 18 | |
| 19 | import com.google.common.collect.ImmutableList; |
| 20 | import org.onlab.packet.MacAddress; |
| 21 | import org.onlab.packet.VlanId; |
| 22 | import org.onlab.util.ImmutableByteSequence; |
| 23 | import org.onosproject.net.PortNumber; |
| 24 | import org.onosproject.net.flow.TrafficTreatment; |
| 25 | import org.onosproject.net.flow.instructions.Instruction; |
| 26 | import org.onosproject.net.flow.instructions.Instructions; |
| 27 | import org.onosproject.net.flow.instructions.Instructions.OutputInstruction; |
| 28 | import org.onosproject.net.flow.instructions.L2ModificationInstruction; |
| 29 | import org.onosproject.net.flow.instructions.L2ModificationInstruction.ModEtherInstruction; |
| 30 | import org.onosproject.net.flow.instructions.L2ModificationInstruction.ModVlanIdInstruction; |
| 31 | import org.onosproject.net.pi.model.PiActionId; |
| 32 | import org.onosproject.net.pi.model.PiPipelineInterpreter.PiInterpreterException; |
| 33 | import org.onosproject.net.pi.runtime.PiAction; |
| 34 | import org.onosproject.net.pi.runtime.PiActionParam; |
| 35 | |
| 36 | import java.util.List; |
| 37 | |
| 38 | import static java.lang.String.format; |
| 39 | import static org.onosproject.net.flow.instructions.Instruction.Type.L2MODIFICATION; |
| 40 | import static org.onosproject.net.flow.instructions.Instruction.Type.OUTPUT; |
| 41 | import static org.onosproject.net.flow.instructions.L2ModificationInstruction.L2SubType.ETH_DST; |
| 42 | import static org.onosproject.net.flow.instructions.L2ModificationInstruction.L2SubType.ETH_SRC; |
| 43 | import static org.onosproject.net.flow.instructions.L2ModificationInstruction.L2SubType.VLAN_ID; |
| 44 | import static org.onosproject.net.flow.instructions.L2ModificationInstruction.L2SubType.VLAN_PUSH; |
| 45 | |
| 46 | |
| 47 | final class FabricTreatmentInterpreter { |
| 48 | private static final String INVALID_TREATMENT = "Invalid treatment for %s block: %s"; |
| 49 | |
| 50 | // Hide default constructor |
| 51 | protected FabricTreatmentInterpreter() { |
| 52 | } |
| 53 | |
| 54 | /* |
| 55 | * In Filtering block, we need to implement these actions: |
| 56 | * |
| 57 | * push_internal_vlan |
| 58 | * set_vlan |
| 59 | * nop |
| 60 | * |
| 61 | * Unsupported, using PiAction directly: |
| 62 | * set_forwarding_type |
| 63 | */ |
| 64 | |
| 65 | static PiAction mapFilteringTreatment(TrafficTreatment treatment) |
| 66 | throws PiInterpreterException { |
| 67 | List<Instruction> instructions = treatment.allInstructions(); |
| 68 | Instruction noActInst = Instructions.createNoAction(); |
| 69 | if (instructions.isEmpty() || instructions.contains(noActInst)) { |
| 70 | // nop |
| 71 | return PiAction.builder() |
| 72 | .withId(FabricConstants.ACT_NOP_ID) |
| 73 | .build(); |
| 74 | } |
| 75 | |
| 76 | L2ModificationInstruction.ModVlanHeaderInstruction pushVlanInst = null; |
| 77 | ModVlanIdInstruction setVlanInst = null; |
| 78 | |
| 79 | for (Instruction inst : instructions) { |
| 80 | if (inst.type() == L2MODIFICATION) { |
| 81 | L2ModificationInstruction l2Inst = (L2ModificationInstruction) inst; |
| 82 | |
| 83 | if (l2Inst.subtype() == VLAN_PUSH) { |
| 84 | pushVlanInst = (L2ModificationInstruction.ModVlanHeaderInstruction) l2Inst; |
| 85 | |
| 86 | } else if (l2Inst.subtype() == VLAN_ID) { |
| 87 | setVlanInst = (ModVlanIdInstruction) l2Inst; |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | if (setVlanInst == null) { |
| 93 | throw new PiInterpreterException(format(INVALID_TREATMENT, "filtering", treatment)); |
| 94 | } |
| 95 | |
| 96 | VlanId vlanId = setVlanInst.vlanId(); |
| 97 | PiActionParam param = new PiActionParam(FabricConstants.ACT_PRM_NEW_VLAN_ID_ID, |
| 98 | ImmutableByteSequence.copyFrom(vlanId.toShort())); |
| 99 | PiActionId actionId; |
| 100 | if (pushVlanInst != null) { |
| 101 | // push_internal_vlan |
| 102 | actionId = FabricConstants.ACT_PUSH_INTERNAL_VLAN_ID; |
| 103 | } else { |
| 104 | actionId = FabricConstants.ACT_SET_VLAN_ID; |
| 105 | } |
| 106 | |
| 107 | // set_vlan |
| 108 | return PiAction.builder() |
| 109 | .withId(actionId) |
| 110 | .withParameter(param) |
| 111 | .build(); |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * In forwarding block, we need to implement these actions: |
| 116 | * duplicate_to_controller |
| 117 | * |
| 118 | * Unsupported, using PiAction directly: |
| 119 | * set_next_id |
| 120 | * push_mpls_and_next_v4 |
| 121 | * push_mpls_and_next_v6 |
| 122 | */ |
| 123 | |
| 124 | public static PiAction mapForwardingTreatment(TrafficTreatment treatment) |
| 125 | throws PiInterpreterException { |
| 126 | List<Instruction> insts = treatment.allInstructions(); |
| 127 | OutputInstruction outInst = insts.stream() |
| 128 | .filter(inst -> inst.type() == OUTPUT) |
| 129 | .map(inst -> (OutputInstruction) inst) |
| 130 | .findFirst() |
| 131 | .orElse(null); |
| 132 | |
| 133 | if (outInst == null) { |
| 134 | throw new PiInterpreterException(format(INVALID_TREATMENT, "forwarding", treatment)); |
| 135 | } |
| 136 | |
| 137 | PortNumber portNumber = outInst.port(); |
| 138 | if (!portNumber.equals(PortNumber.CONTROLLER)) { |
| 139 | throw new PiInterpreterException(format("Unsupported port number %s," + |
| 140 | "supports punt action only", |
| 141 | portNumber)); |
| 142 | } |
| 143 | |
| 144 | return PiAction.builder() |
| 145 | .withId(FabricConstants.ACT_DUPLICATE_TO_CONTROLLER_ID) |
| 146 | .build(); |
| 147 | } |
| 148 | |
| 149 | /* |
| 150 | * In Next block, we need to implement these actions: |
| 151 | * output |
| 152 | * output_ecmp |
| 153 | * set_vlan_output |
| 154 | * |
| 155 | * Unsupported, using PiAction directly: |
| 156 | * set_mcast_group |
| 157 | */ |
| 158 | |
| 159 | public static PiAction mapNextTreatment(TrafficTreatment treatment) |
| 160 | throws PiInterpreterException { |
| 161 | List<Instruction> insts = treatment.allInstructions(); |
| 162 | OutputInstruction outInst = null; |
| 163 | ModEtherInstruction modEthDstInst = null; |
| 164 | ModEtherInstruction modEthSrcInst = null; |
| 165 | ModVlanIdInstruction modVlanIdInst = null; |
| 166 | |
| 167 | // TODO: use matrix to store the combination of instruction |
| 168 | for (Instruction inst : insts) { |
| 169 | switch (inst.type()) { |
| 170 | case L2MODIFICATION: |
| 171 | L2ModificationInstruction l2Inst = (L2ModificationInstruction) inst; |
| 172 | |
| 173 | if (l2Inst.subtype() == ETH_SRC) { |
| 174 | modEthSrcInst = (ModEtherInstruction) l2Inst; |
| 175 | } |
| 176 | |
| 177 | if (l2Inst.subtype() == ETH_DST) { |
| 178 | modEthDstInst = (ModEtherInstruction) l2Inst; |
| 179 | } |
| 180 | |
| 181 | if (l2Inst.subtype() == VLAN_ID) { |
| 182 | modVlanIdInst = (ModVlanIdInstruction) l2Inst; |
| 183 | } |
| 184 | break; |
| 185 | case OUTPUT: |
| 186 | outInst = (OutputInstruction) inst; |
| 187 | break; |
| 188 | default: |
| 189 | break; |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | if (outInst == null) { |
| 194 | throw new PiInterpreterException(format(INVALID_TREATMENT, "next", treatment)); |
| 195 | } |
| 196 | short portNum = (short) outInst.port().toLong(); |
| 197 | PiActionParam portNumParam = new PiActionParam(FabricConstants.ACT_PRM_PORT_NUM_ID, |
| 198 | ImmutableByteSequence.copyFrom(portNum)); |
| 199 | if (modEthDstInst == null && modEthSrcInst == null) { |
| 200 | if (modVlanIdInst != null) { |
| 201 | VlanId vlanId = modVlanIdInst.vlanId(); |
| 202 | PiActionParam vlanParam = |
| 203 | new PiActionParam(FabricConstants.ACT_PRM_NEW_VLAN_ID_ID, |
| 204 | ImmutableByteSequence.copyFrom(vlanId.toShort())); |
| 205 | // set_vlan_output |
| 206 | return PiAction.builder() |
| 207 | .withId(FabricConstants.ACT_SET_VLAN_OUTPUT_ID) |
| 208 | .withParameters(ImmutableList.of(portNumParam, vlanParam)) |
| 209 | .build(); |
| 210 | } else { |
| 211 | // output |
| 212 | return PiAction.builder() |
| 213 | .withId(FabricConstants.ACT_OUTPUT_ID) |
| 214 | .withParameter(portNumParam) |
| 215 | .build(); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | if (modEthDstInst != null && modEthSrcInst != null) { |
| 220 | // output and rewrite src/dst mac |
| 221 | MacAddress srcMac = modEthSrcInst.mac(); |
| 222 | MacAddress dstMac = modEthDstInst.mac(); |
| 223 | PiActionParam srcMacParam = new PiActionParam(FabricConstants.ACT_PRM_SMAC_ID, |
| 224 | ImmutableByteSequence.copyFrom(srcMac.toBytes())); |
| 225 | PiActionParam dstMacParam = new PiActionParam(FabricConstants.ACT_PRM_DMAC_ID, |
| 226 | ImmutableByteSequence.copyFrom(dstMac.toBytes())); |
| 227 | return PiAction.builder() |
| 228 | .withId(FabricConstants.ACT_L3_ROUTING_ID) |
| 229 | .withParameters(ImmutableList.of(portNumParam, |
| 230 | srcMacParam, |
| 231 | dstMacParam)) |
| 232 | .build(); |
| 233 | } |
| 234 | |
| 235 | throw new PiInterpreterException(format(INVALID_TREATMENT, "next", treatment)); |
| 236 | } |
| 237 | } |