ebpfModel.h

/*
Copyright 2013-present Barefoot Networks, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

#ifndef _BACKENDS_EBPF_EBPFMODEL_H_
#define _BACKENDS_EBPF_EBPFMODEL_H_

#include "frontends/common/model.h"
#include "frontends/p4/coreLibrary.h"
#include "ir/ir.h"
#include "lib/cstring.h"

namespace EBPF {

struct TableImpl_Model : public ::Model::Extern_Model {
    explicit TableImpl_Model(cstring name) :
            Extern_Model(name),
            size("size") {}
    ::Model::Elem size;
};

struct CounterArray_Model : public ::Model::Extern_Model {
    CounterArray_Model() : Extern_Model("CounterArray"),
                           increment("increment"), add("add"),
                           max_index("max_index"), sparse("sparse")  {}
    ::Model::Elem increment;
    ::Model::Elem add;
    ::Model::Elem max_index;
    ::Model::Elem sparse;
};

struct Filter_Model : public ::Model::Elem {
    Filter_Model() : Elem("ebpf_filter"),
                     parser("prs"), filter("filt") {}
    ::Model::Elem parser;
    ::Model::Elem filter;
};

// Keep this in sync with ebpf_model.p4
class EBPFModel : public ::Model::Model {
 protected:
    EBPFModel() : counterArray(),
                  array_table("array_table"),
                  hash_table("hash_table"),
                  tableImplProperty("implementation"),
                  CPacketName("skb"),
                  packet("packet", P4::P4CoreLibrary::instance.packetIn, 0),
                  filter(), counterIndexType("u32"), counterValueType("u32")
    {}

 public:
    static EBPFModel instance;
    static cstring reservedPrefix;

    CounterArray_Model     counterArray;
    TableImpl_Model        array_table;
    TableImpl_Model        hash_table;
    ::Model::Elem          tableImplProperty;
    ::Model::Elem          CPacketName;
    ::Model::Param_Model   packet;
    Filter_Model           filter;

    cstring counterIndexType;
    cstring counterValueType;

    static cstring reserved(cstring name)
    { return reservedPrefix + name; }
};

}  // namespace EBPF

#endif /* _BACKENDS_EBPF_EBPFMODEL_H_ */