Examples with ImmutableByteSequence org.onlab.util.ImmutableByteSequence used on opensource projects

Example 11 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project fabric-tna by stratum.

the class FabricInterpreter method mapInboundPacket.

@Override
public InboundPacket mapInboundPacket(PiPacketOperation packetIn, DeviceId deviceId) throws PiInterpreterException {
    // Assuming that the packet is ethernet, which is fine since fabric.p4
    // can deparse only ethernet packets.
    Ethernet ethPkt;
    try {
        ethPkt = Ethernet.deserializer().deserialize(packetIn.data().asArray(), 0, packetIn.data().size());
    } catch (DeserializationException dex) {
        throw new PiInterpreterException(dex.getMessage());
    }
    // Returns the ingress port packet metadata.
    Optional<PiPacketMetadata> packetMetadata = packetIn.metadatas().stream().filter(m -> m.id().equals(P4InfoConstants.INGRESS_PORT)).findFirst();
    if (packetMetadata.isPresent()) {
        try {
            ImmutableByteSequence portByteSequence = packetMetadata.get().value().fit(P4InfoConstants.INGRESS_PORT_BITWIDTH);
            UnsignedInteger ui = UnsignedInteger.fromIntBits(portByteSequence.asReadOnlyBuffer().getInt());
            ConnectPoint receivedFrom = new ConnectPoint(deviceId, PortNumber.portNumber(ui.longValue()));
            if (!receivedFrom.port().hasName()) {
                receivedFrom = translateSwitchPort(receivedFrom);
            }
            ByteBuffer rawData = ByteBuffer.wrap(packetIn.data().asArray());
            return new DefaultInboundPacket(receivedFrom, ethPkt, rawData);
        } catch (ImmutableByteSequence.ByteSequenceTrimException e) {
            throw new PiInterpreterException(format("Malformed metadata '%s' in packet-in received from '%s': %s", P4InfoConstants.INGRESS_PORT, deviceId, packetIn));
        }
    } else {
        throw new PiInterpreterException(format("Missing metadata '%s' in packet-in received from '%s': %s", P4InfoConstants.INGRESS_PORT, deviceId, packetIn));
    }
}

Example 12 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class PiFlowRuleTranslatorImpl method typeCheckFieldMatch.

private static PiFieldMatch typeCheckFieldMatch(PiFieldMatch fieldMatch, PiMatchFieldModel fieldModel) throws PiTranslationException {
    // Check parameter type and size
    if (!fieldModel.matchType().equals(fieldMatch.type())) {
        throw new PiTranslationException(format("Wrong match type for field '%s', expected %s, but found %s", fieldMatch.fieldId(), fieldModel.matchType().name(), fieldMatch.type().name()));
    }
    // Check if the arbitrary bit width is supported
    if (!fieldModel.hasBitWidth() && !fieldModel.matchType().equals(PiMatchType.EXACT) && !fieldModel.matchType().equals(PiMatchType.OPTIONAL)) {
        throw new PiTranslationException(format("Arbitrary bit width for field '%s' and match type %s is not supported", fieldMatch.fieldId(), fieldModel.matchType().name()));
    }
    int modelBitWidth = fieldModel.bitWidth();
    try {
        switch(fieldModel.matchType()) {
            case EXACT:
                PiExactFieldMatch exactField = (PiExactFieldMatch) fieldMatch;
                return new PiExactFieldMatch(fieldMatch.fieldId(), fieldModel.hasBitWidth() ? exactField.value().fit(modelBitWidth) : exactField.value());
            case TERNARY:
                PiTernaryFieldMatch ternField = (PiTernaryFieldMatch) fieldMatch;
                ImmutableByteSequence ternMask = ternField.mask().fit(modelBitWidth);
                ImmutableByteSequence ternValue = ternField.value().fit(modelBitWidth).bitwiseAnd(ternMask);
                return new PiTernaryFieldMatch(fieldMatch.fieldId(), ternValue, ternMask);
            case LPM:
                PiLpmFieldMatch lpmfield = (PiLpmFieldMatch) fieldMatch;
                if (lpmfield.prefixLength() > modelBitWidth) {
                    throw new PiTranslationException(format("Invalid prefix length for LPM field '%s', found %d but field has bit-width %d", fieldMatch.fieldId(), lpmfield.prefixLength(), modelBitWidth));
                }
                ImmutableByteSequence lpmValue = lpmfield.value().fit(modelBitWidth);
                ImmutableByteSequence lpmMask = prefixOnes(lpmValue.size(), lpmfield.prefixLength());
                lpmValue = lpmValue.bitwiseAnd(lpmMask);
                return new PiLpmFieldMatch(fieldMatch.fieldId(), lpmValue, lpmfield.prefixLength());
            case RANGE:
                return new PiRangeFieldMatch(fieldMatch.fieldId(), ((PiRangeFieldMatch) fieldMatch).lowValue().fit(modelBitWidth), ((PiRangeFieldMatch) fieldMatch).highValue().fit(modelBitWidth));
            case OPTIONAL:
                PiOptionalFieldMatch optionalField = (PiOptionalFieldMatch) fieldMatch;
                return new PiOptionalFieldMatch(fieldMatch.fieldId(), fieldModel.hasBitWidth() ? optionalField.value().fit(modelBitWidth) : optionalField.value());
            default:
                // Should never be here.
                throw new IllegalArgumentException("Unrecognized match type " + fieldModel.matchType().name());
        }
    } catch (ByteSequenceTrimException e) {
        throw new PiTranslationException(format("Size mismatch for field %s: %s", fieldMatch.fieldId(), e.getMessage()));
    }
}

Example 13 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class PiTernaryFieldMatchTest method testConstruction.

/**
 * Checks the construction of a PiTernaryFieldMatch object.
 */
@Test
public void testConstruction() {
    final ImmutableByteSequence value = copyFrom(0x0a01010a);
    final ImmutableByteSequence mask = copyFrom(0x00ffffff);
    final PiMatchFieldId piMatchField = PiMatchFieldId.of(IPV4_HEADER_NAME + DOT + DST_ADDR);
    PiTernaryFieldMatch piTernaryFieldMatch = new PiTernaryFieldMatch(piMatchField, value, mask);
    assertThat(piTernaryFieldMatch, is(notNullValue()));
    assertThat(piTernaryFieldMatch.value(), is(value));
    assertThat(piTernaryFieldMatch.mask(), is(mask));
    assertThat(piTernaryFieldMatch.type(), is(PiMatchType.TERNARY));
}

Example 14 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class PiOptionalFieldMatchTest method testConstruction.

/**
 * Checks the construction of a PiOptionalFieldMatch object.
 */
@Test
public void testConstruction() {
    final ImmutableByteSequence value = copyFrom(0x0806);
    final PiMatchFieldId piMatchField = PiMatchFieldId.of(ETH_HEADER_NAME + DOT + ETH_TYPE);
    PiOptionalFieldMatch piOptionalFieldMatch = new PiOptionalFieldMatch(piMatchField, value);
    assertThat(piOptionalFieldMatch, is(notNullValue()));
    assertThat(piOptionalFieldMatch.value(), is(value));
    assertThat(piOptionalFieldMatch.type(), is(PiMatchType.OPTIONAL));
}

Example 15 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class PiActionParamTest method testConstruction.

/**
 * Checks the construction of a PiActionParam object.
 */
@Test
public void testConstruction() {
    ImmutableByteSequence value = copyFrom(0x0b010102);
    final PiActionParamId piActionParamId = PiActionParamId.of(SRC_ADDR);
    final PiActionParam piActionParam = new PiActionParam(piActionParamId, value);
    assertThat(piActionParam, is(notNullValue()));
    assertThat(piActionParam.id(), is(piActionParamId));
    assertThat(piActionParam.value(), is(value));
}