/* * Copyright (c) 2017 Cisco and/or its affiliates. * 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 __VOM_PREFIX_H__ #define __VOM_PREFIX_H__ #include <boost/asio/ip/address.hpp> #include "vom/enum_base.hpp" namespace VOM { /** * Types belonging to Routing */ /** * An L3 protocol can be used to construct a prefix that is used * to match packets are part of a route. */ class l3_proto_t : public enum_base<l3_proto_t> { public: const static l3_proto_t IPV4; const static l3_proto_t IPV6; const static l3_proto_t MPLS; bool is_ipv4(); bool is_ipv6(); static const l3_proto_t& from_address(const boost::asio::ip::address& addr); private: /** * Private constructor taking the value and the string name */ l3_proto_t(int v, const std::string& s); }; /** * A next-hop protocol describes the protocol of a peer to which packets * are sent after matching a route. */ class nh_proto_t : public enum_base<nh_proto_t> { public: const static nh_proto_t IPV4; const static nh_proto_t IPV6; const static nh_proto_t MPLS; const static nh_proto_t ETHERNET; static const nh_proto_t& from_address(const boost::asio::ip::address& addr); private: /** * Private constructor taking the value and the string name */ nh_proto_t(int v, const std::string& s); }; namespace route { /** * type def the table-id */ typedef uint32_t table_id_t; /** * The table-id for the default table */ const static table_id_t DEFAULT_TABLE = 0; /** * A prefix defintion. Address + length */ class prefix_t { public: /** * Default Constructor - creates ::/0 */ prefix_t(); /** * Constructor with address and length */ prefix_t(const boost::asio::ip::address& addr, uint8_t len); /** * Constructor with just the address, this creates a * host prefix */ prefix_t(const boost::asio::ip::address& addr); /** * Constructor with string and length */ prefix_t(const std::string& s, uint8_t len); /** * Copy Constructor */ prefix_t(const prefix_t&); /** * Constructor with VPP API prefix representation */ prefix_t(uint8_t is_ip6, uint8_t* addr, uint8_t len); /** * Destructor */ ~prefix_t(); /** * Get the address */ const boost::asio::ip::address& address() const; /** * Get the network mask width */ uint8_t mask_width() const; /** * Assignement */ prefix_t& operator=(const prefix_t&); /** * Less than operator */ bool operator<(const prefix_t& o) const; /** * equals operator */ bool operator==(const prefix_t& o) const; /** * not equal opartor */ bool operator!=(const prefix_t& o) const; /** * convert to string format for debug purposes */ std::string to_string() const; /** * The all Zeros prefix */ const static prefix_t ZERO; /** * The all Zeros v6 prefix */ const static prefix_t ZEROv6; /** * Convert the prefix into VPP API parameters */ void to_vpp(uint8_t* is_ip6, uint8_t* addr, uint8_t* len) const; /** * Return a address representation of the mask, e.g. 255.255.0.0 */ boost::asio::ip::address_v4 mask() const; /** * get the lowest address in the prefix */ boost::asio::ip::address_v4 low() const; /** * Get the highest address in the prefix */ boost::asio::ip::address_v4 high() const; /** * Get the L3 protocol */ l3_proto_t l3_proto() const; private: /** * The address */ boost::asio::ip::address m_addr; /** * The prefix length */ uint8_t m_len; }; }; boost::asio::ip::address_v4 operator|(const boost::asio::ip::address_v4& addr1, const boost::asio::ip::address_v4& addr2); boost::asio::ip::address_v4 operator&(const boost::asio::ip::address_v4& addr1, const boost::asio::ip::address_v4& addr2); boost::asio::ip::address_v4 operator~(const boost::asio::ip::address_v4& addr1); /** * Ostream printer for prefix_t */ std::ostream& operator<<(std::ostream& os, const route::prefix_t& pfx); /** * Convert a boost address into a VPP bytes string */ void to_bytes(const boost::asio::ip::address& addr, uint8_t* is_ip6, uint8_t* array); void to_bytes(const boost::asio::ip::address_v4& addr, uint8_t* array); void to_bytes(const boost::asio::ip::address_v6& addr, uint8_t* array); /** * Get the prefix mask length of a host route from the boost address */ uint32_t mask_width(const boost::asio::ip::address& addr); /** * Convert a VPP byte stinrg into a boost addresss */ boost::asio::ip::address from_bytes(uint8_t is_ip6, uint8_t* array); }; /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "mozilla") * End: */ #endif