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Basic support for
@p4runtime_translation and `@p4runtime_translatio…
…n_mappings`.
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69 changes: 69 additions & 0 deletions
69
backends/p4tools/modules/testgen/targets/bmv2/p4runtime_translation.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| #include "backends/p4tools/modules/testgen/targets/bmv2/p4runtime_translation.h" | ||
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| std::vector<const IR::Annotation *> | ||
| P4Tools::P4Testgen::Bmv2::PropagateP4RuntimeTranslation::lookupP4RuntimeAnnotations( | ||
| const P4::TypeMap &typeMap, const IR::Type *type) { | ||
| std::vector<const IR::Annotation *> p4RuntimeAnnotations; | ||
| const auto *typeName = type->to<IR::Type_Name>(); | ||
| if (typeName != nullptr) { | ||
| type = typeMap.getType(typeName); | ||
| if (type == nullptr) { | ||
| ::error("Type %1% not found in the type map.", typeName); | ||
| return p4RuntimeAnnotations; | ||
| } | ||
| type = type->getP4Type(); | ||
| } | ||
| const auto *annotatedType = type->to<IR::IAnnotated>(); | ||
| if (annotatedType == nullptr) { | ||
| return p4RuntimeAnnotations; | ||
| } | ||
| const auto *p4runtimeAnnotation = annotatedType->getAnnotation("p4runtime_translation"); | ||
| if (p4runtimeAnnotation != nullptr) { | ||
| BUG_CHECK(!p4runtimeAnnotation->needsParsing, | ||
| "The @p4runtime_translation annotation should have been parsed already."); | ||
| p4RuntimeAnnotations.push_back(p4runtimeAnnotation); | ||
| } | ||
| const auto *p4runtimeTranslationMappings = | ||
| annotatedType->getAnnotation("p4runtime_translation_mappings"); | ||
| if (p4runtimeTranslationMappings != nullptr) { | ||
| BUG_CHECK( | ||
| !p4runtimeTranslationMappings->needsParsing, | ||
| "The @p4runtime_translation_mappings annotation should have been parsed already."); | ||
| p4RuntimeAnnotations.push_back(p4runtimeTranslationMappings); | ||
| } | ||
| return p4RuntimeAnnotations; | ||
| } | ||
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| const IR::Parameter *P4Tools::P4Testgen::Bmv2::PropagateP4RuntimeTranslation::preorder( | ||
| IR::Parameter *parameter) { | ||
| auto p4RuntimeAnnotations = lookupP4RuntimeAnnotations(_typeMap, parameter->type); | ||
| if (p4RuntimeAnnotations.empty()) { | ||
| return parameter; | ||
| } | ||
| auto *annotationsVector = parameter->annotations->clone(); | ||
| for (const auto *p4runtimeAnnotation : p4RuntimeAnnotations) { | ||
| annotationsVector->annotations.push_back(p4runtimeAnnotation); | ||
| } | ||
| parameter->annotations = annotationsVector; | ||
| return parameter; | ||
| } | ||
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| const IR::KeyElement *P4Tools::P4Testgen::Bmv2::PropagateP4RuntimeTranslation::preorder( | ||
| IR::KeyElement *keyElement) { | ||
| auto p4RuntimeAnnotations = lookupP4RuntimeAnnotations(_typeMap, keyElement->expression->type); | ||
| if (p4RuntimeAnnotations.empty()) { | ||
| return keyElement; | ||
| } | ||
| auto *annotationsVector = keyElement->annotations->clone(); | ||
| for (const auto *p4runtimeAnnotation : p4RuntimeAnnotations) { | ||
| annotationsVector->annotations.push_back(p4runtimeAnnotation); | ||
| } | ||
| keyElement->annotations = annotationsVector; | ||
| return keyElement; | ||
| } | ||
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| P4Tools::P4Testgen::Bmv2::PropagateP4RuntimeTranslation::PropagateP4RuntimeTranslation( | ||
| const P4::TypeMap &typeMap) | ||
| : _typeMap(typeMap) { | ||
| setName("PropagateP4RuntimeTranslation"); | ||
| } |
31 changes: 31 additions & 0 deletions
31
backends/p4tools/modules/testgen/targets/bmv2/p4runtime_translation.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| #ifndef BACKENDS_P4TOOLS_MODULES_TESTGEN_TARGETS_BMV2_P4RUNTIME_TRANSLATION_H_ | ||
| #define BACKENDS_P4TOOLS_MODULES_TESTGEN_TARGETS_BMV2_P4RUNTIME_TRANSLATION_H_ | ||
| #include <functional> | ||
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| #include "frontends/p4/typeMap.h" | ||
| #include "ir/ir.h" | ||
| #include "ir/visitor.h" | ||
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| namespace P4Tools::P4Testgen::Bmv2 { | ||
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| /// Propagates P4Runtime annotations attached to type definitions to the nodes which use these type | ||
| /// definitions. For now, this is restricted to key elements and action parameters. | ||
| class PropagateP4RuntimeTranslation : public Transform { | ||
| /// We use the typemap to look up the original declaration for type reference. | ||
| /// These declarations may have an annotation. | ||
| std::reference_wrapper<const P4::TypeMap> _typeMap; | ||
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| /// Look up annotations relevant to P4Runtime. They may influence the control plane interfaces. | ||
| static std::vector<const IR::Annotation *> lookupP4RuntimeAnnotations( | ||
| const P4::TypeMap &typeMap, const IR::Type *type); | ||
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| const IR::Parameter *preorder(IR::Parameter *parameter) override; | ||
| const IR::KeyElement *preorder(IR::KeyElement *keyElement) override; | ||
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| public: | ||
| explicit PropagateP4RuntimeTranslation(const P4::TypeMap &typeMap); | ||
| }; | ||
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| } // namespace P4Tools::P4Testgen::Bmv2 | ||
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| #endif /* BACKENDS_P4TOOLS_MODULES_TESTGEN_TARGETS_BMV2_P4RUNTIME_TRANSLATION_H_ */ |
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