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

Example 16 with PiExactFieldMatch

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

the class PiCriterionTranslatorsTest method testPbbIsidCriterion.

@Test
public void testPbbIsidCriterion() throws Exception {
    int pbbIsid = random.nextInt();
    int bitWidth = 32;
    PbbIsidCriterion criterion = (PbbIsidCriterion) Criteria.matchPbbIsid(pbbIsid);
    PiExactFieldMatch exactMatch = (PiExactFieldMatch) translateCriterion(criterion, fieldId, EXACT, bitWidth);
    assertThat(exactMatch.value().asReadOnlyBuffer().getInt(), is(criterion.pbbIsid()));
}

Example 17 with PiExactFieldMatch

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

the class PiCriterionTranslatorsTest method testMplsBosCriterion.

@Test
public void testMplsBosCriterion() throws Exception {
    boolean mplsBos = random.nextBoolean();
    int bitWidth = 32;
    int bMplsBos = 0;
    MplsBosCriterion criterion = (MplsBosCriterion) Criteria.matchMplsBos(mplsBos);
    PiExactFieldMatch exactMatch = (PiExactFieldMatch) translateCriterion(criterion, fieldId, EXACT, bitWidth);
    bMplsBos = (criterion.mplsBos()) ? 1 : 0;
    assertThat(exactMatch.value().asReadOnlyBuffer().getInt(), is(bMplsBos));
}

Example 18 with PiExactFieldMatch

use of org.onosproject.net.pi.runtime.PiExactFieldMatch 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 19 with PiExactFieldMatch

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

the class PiCriteriaTest method testExactMatchPiMethod.

/**
 * Test the ExactMatchPi method.
 */
@Test
public void testExactMatchPiMethod() {
    Criterion matchPiBytes = PiCriterion.builder().matchExact(ethMatchFieldId, matchExactBytes1).build();
    PiCriterion piCriterionBytes = checkAndConvert(matchPiBytes, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchBytes = new PiExactFieldMatch(ethMatchFieldId, copyFrom(matchExactBytes1));
    assertThat(piCriterionBytes.fieldMatches().iterator().next(), is(expectedMatchBytes));
    Criterion matchPiShort = PiCriterion.builder().matchExact(ethMatchFieldId, matchExactShort1).build();
    PiCriterion piCriterionShort = checkAndConvert(matchPiShort, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchShort = new PiExactFieldMatch(ethMatchFieldId, copyFrom(matchExactShort1));
    assertThat(piCriterionShort.fieldMatches().iterator().next(), is(expectedMatchShort));
    Criterion matchPiInt = PiCriterion.builder().matchExact(ethMatchFieldId, matchExactInt1).build();
    PiCriterion piCriterionInt = checkAndConvert(matchPiInt, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchInt = new PiExactFieldMatch(ethMatchFieldId, copyFrom(matchExactInt1));
    assertThat(piCriterionInt.fieldMatches().iterator().next(), is(expectedMatchInt));
    Criterion matchPiLong = PiCriterion.builder().matchExact(ethMatchFieldId, matchExactLong1).build();
    PiCriterion piCriterionLong = checkAndConvert(matchPiLong, Criterion.Type.PROTOCOL_INDEPENDENT, PiCriterion.class);
    PiFieldMatch expectedMatchLong = new PiExactFieldMatch(ethMatchFieldId, copyFrom(matchExactLong1));
    assertThat(piCriterionLong.fieldMatches().iterator().next(), is(expectedMatchLong));
}

Example 20 with PiExactFieldMatch

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