Examples with PiLpmFieldMatch org.onosproject.net.pi.runtime.PiLpmFieldMatch used on opensource projects

Example 1 with PiLpmFieldMatch

use of org.onosproject.net.pi.runtime.PiLpmFieldMatch in project onos by opennetworkinglab.

the class CriterionJsonMatcher method matchCriterion.

/**
 * Matches a protocol-independent Type criterion object.
 *
 * @param criterion criterion to match
 * @return true if the JSON matches the criterion, false otherwise.
 */
private boolean matchCriterion(PiCriterion criterion) {
    Collection<PiFieldMatch> piFieldMatches = criterion.fieldMatches();
    JsonNode jsonMathes = jsonCriterion.get("matches");
    if (!jsonMathes.isArray()) {
        return false;
    }
    for (JsonNode matchNode : jsonMathes) {
        for (PiFieldMatch fieldMatch : piFieldMatches) {
            if (!Objects.equals(matchNode.get("field").textValue(), fieldMatch.fieldId().id())) {
                description.appendText("match field was " + fieldMatch.fieldId().id());
                return false;
            }
            if (!Objects.equals(matchNode.get("match").textValue(), fieldMatch.type().name().toLowerCase())) {
                description.appendText("match type was " + fieldMatch.type().name().toLowerCase());
                return false;
            }
            switch(fieldMatch.type()) {
                case EXACT:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiExactFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiExactFieldMatch) fieldMatch).value());
                        return false;
                    }
                    break;
                case LPM:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiLpmFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiLpmFieldMatch) fieldMatch).value());
                        return false;
                    }
                    if (!Objects.equals(matchNode.get("prefixLength").intValue(), ((PiLpmFieldMatch) fieldMatch).prefixLength())) {
                        description.appendText("match prefix was " + ((PiLpmFieldMatch) fieldMatch).prefixLength());
                        return false;
                    }
                    break;
                case TERNARY:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiTernaryFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiTernaryFieldMatch) fieldMatch).value());
                        return false;
                    }
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("mask").textValue(), null)), ((PiTernaryFieldMatch) fieldMatch).mask())) {
                        description.appendText("match mask was " + ((PiTernaryFieldMatch) fieldMatch).mask());
                        return false;
                    }
                    break;
                case RANGE:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("highValue").textValue(), null)), ((PiRangeFieldMatch) fieldMatch).highValue())) {
                        description.appendText("match high value was " + ((PiRangeFieldMatch) fieldMatch).highValue());
                        return false;
                    }
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("lowValue").textValue(), null)), ((PiRangeFieldMatch) fieldMatch).lowValue())) {
                        description.appendText("match low value was " + ((PiRangeFieldMatch) fieldMatch).lowValue());
                        return false;
                    }
                    break;
                case OPTIONAL:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiOptionalFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiOptionalFieldMatch) fieldMatch).value());
                        return false;
                    }
                    break;
                default:
                    description.appendText("match type was " + fieldMatch.type().name().toLowerCase());
                    return false;
            }
        }
    }
    return true;
}

Example 2 with PiLpmFieldMatch

use of org.onosproject.net.pi.runtime.PiLpmFieldMatch in project onos by opennetworkinglab.

the class CriterionTranslatorHelper method translateCriterion.

/**
 * Translates a given criterion instance to a PiFieldMatch with the given id, match type, and bit-width.
 *
 * @param fieldId   PI match field identifier
 * @param criterion criterion
 * @param matchType match type
 * @param bitWidth  size of the field match in bits
 * @return a PI field match
 * @throws PiTranslationException if the criterion cannot be translated (see exception message)
 */
static PiFieldMatch translateCriterion(Criterion criterion, PiMatchFieldId fieldId, PiMatchType matchType, int bitWidth) throws PiTranslationException {
    if (!TRANSLATORS.containsKey(criterion.getClass())) {
        throw new PiTranslationException(format("Translation of criterion class %s is not implemented.", criterion.getClass().getSimpleName()));
    }
    try {
        final CriterionTranslator translator = TRANSLATORS.get(criterion.getClass()).newInstance();
        translator.init(criterion, bitWidth);
        switch(matchType) {
            case EXACT:
                return new PiExactFieldMatch(fieldId, translator.exactMatch());
            case OPTIONAL:
                return new PiOptionalFieldMatch(fieldId, translator.exactMatch());
            case TERNARY:
                final Pair<ImmutableByteSequence, ImmutableByteSequence> tp = translator.ternaryMatch();
                return new PiTernaryFieldMatch(fieldId, tp.getLeft(), tp.getRight());
            case LPM:
                final Pair<ImmutableByteSequence, Integer> lp = translator.lpmMatch();
                return new PiLpmFieldMatch(fieldId, lp.getLeft(), lp.getRight());
            default:
                throw new PiTranslationException(format("Translation of criterion %s (%s class) to match type %s is not implemented.", criterion.type().name(), criterion.getClass().getSimpleName(), matchType.name()));
        }
    } catch (ByteSequenceTrimException e) {
        throw new PiTranslationException(format("Size mismatch for criterion %s: %s", criterion.type(), e.getMessage()));
    } catch (CriterionTranslatorException e) {
        throw new PiTranslationException(format("Unable to translate criterion %s: %s", criterion.type(), e.getMessage()));
    } catch (InstantiationException | IllegalAccessException e) {
        // Was not able to instantiate the criterion translator.
        throw new IllegalStateException(e);
    }
}

Example 3 with PiLpmFieldMatch

use of org.onosproject.net.pi.runtime.PiLpmFieldMatch in project onos by opennetworkinglab.

the class PiCriterionTranslatorsTest method testTernaryToLpmTranslation.

@Test
public void testTernaryToLpmTranslation() throws Exception {
    EthCriterion criterion = (EthCriterion) Criteria.matchEthDstMasked(MacAddress.ONOS, MacAddress.IPV4_MULTICAST_MASK);
    PiLpmFieldMatch lpmMatch = (PiLpmFieldMatch) translateCriterion(criterion, fieldId, LPM, MacAddress.MAC_ADDRESS_LENGTH * Byte.SIZE);
    ImmutableByteSequence expectedValue = ImmutableByteSequence.copyFrom(MacAddress.ONOS.toBytes());
    assertThat(lpmMatch.prefixLength(), is(25));
    assertThat(lpmMatch.value(), is(expectedValue));
}

Example 4 with PiLpmFieldMatch

use of org.onosproject.net.pi.runtime.PiLpmFieldMatch in project onos by opennetworkinglab.

the class PiCriteriaTest method testLpmMatchPiMethod.

/**
 * Test the LpmMatchPi method.
 */
@Test
public void testLpmMatchPiMethod() {
    Criterion matchPiBytes = PiCriterion.builder().matchLpm(ipv4MatchFieldId, matchLpmBytes1, mask).build();
    PiCriterion piCriterionBytes = checkAndConvert(matchPiBytes, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchBytes = new PiLpmFieldMatch(ipv4MatchFieldId, copyFrom(matchLpmBytes1), mask);
    assertThat(piCriterionBytes.fieldMatches().iterator().next(), is(expectedMatchBytes));
    Criterion matchPiShort = PiCriterion.builder().matchLpm(ipv4MatchFieldId, matchLpmShort1, mask).build();
    PiCriterion piCriterionShort = checkAndConvert(matchPiShort, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchShort = new PiLpmFieldMatch(ipv4MatchFieldId, copyFrom(matchLpmShort1), mask);
    assertThat(piCriterionShort.fieldMatches().iterator().next(), is(expectedMatchShort));
    Criterion matchPiInt = PiCriterion.builder().matchLpm(ipv4MatchFieldId, matchLpmInt1, mask).build();
    PiCriterion piCriterionInt = checkAndConvert(matchPiInt, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchInt = new PiLpmFieldMatch(ipv4MatchFieldId, copyFrom(matchLpmInt1), mask);
    assertThat(piCriterionInt.fieldMatches().iterator().next(), is(expectedMatchInt));
    Criterion matchPiLong = PiCriterion.builder().matchLpm(ipv4MatchFieldId, matchLpmLong1, mask).build();
    PiCriterion piCriterionLong = checkAndConvert(matchPiLong, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchLong = new PiLpmFieldMatch(ipv4MatchFieldId, copyFrom(matchLpmLong1), mask);
    assertThat(piCriterionLong.fieldMatches().iterator().next(), is(expectedMatchLong));
}

Example 5 with PiLpmFieldMatch

use of org.onosproject.net.pi.runtime.PiLpmFieldMatch 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()));
    }
}