Ratan Gupta | 82549cc | 2017-04-21 08:45:23 +0530 | [diff] [blame] | 1 | #pragma once |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame] | 2 | #include <fmt/core.h> |
| 3 | #include <net/ethernet.h> |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 4 | #include <netinet/in.h> |
Ratan Gupta | 3681a50 | 2017-06-17 19:20:04 +0530 | [diff] [blame] | 5 | |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame] | 6 | #include <algorithm> |
| 7 | #include <array> |
Patrick Venture | 189d44e | 2018-07-09 12:30:59 -0700 | [diff] [blame] | 8 | #include <chrono> |
William A. Kennington III | 3a70fa2 | 2018-09-20 18:48:20 -0700 | [diff] [blame] | 9 | #include <sdeventplus/clock.hpp> |
| 10 | #include <sdeventplus/utility/timer.hpp> |
Patrick Venture | 189d44e | 2018-07-09 12:30:59 -0700 | [diff] [blame] | 11 | #include <string> |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame] | 12 | #include <string_view> |
| 13 | #include <type_traits> |
William A. Kennington III | dd9ef81 | 2022-10-05 02:08:02 -0700 | [diff] [blame] | 14 | #include <unordered_map> |
Willy Tu | f7dce2e | 2022-10-07 05:48:08 +0000 | [diff] [blame] | 15 | #include <unordered_set> |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 16 | #include <variant> |
Ratan Gupta | 0f9dc1b | 2017-09-03 17:57:50 +0530 | [diff] [blame] | 17 | |
Ratan Gupta | 82549cc | 2017-04-21 08:45:23 +0530 | [diff] [blame] | 18 | namespace phosphor |
| 19 | { |
| 20 | namespace network |
| 21 | { |
Ratan Gupta | e05083a | 2017-09-16 07:12:11 +0530 | [diff] [blame] | 22 | |
| 23 | using namespace std::chrono_literals; |
Ratan Gupta | 16f1288 | 2017-09-22 18:26:11 +0530 | [diff] [blame] | 24 | |
William A. Kennington III | c7cf25f | 2021-11-09 16:16:59 -0800 | [diff] [blame] | 25 | // wait for three seconds before reloading systemd-networkd |
| 26 | constexpr auto reloadTimeout = 3s; |
Ratan Gupta | 16f1288 | 2017-09-22 18:26:11 +0530 | [diff] [blame] | 27 | |
William A. Kennington III | d41db38 | 2021-11-09 20:42:29 -0800 | [diff] [blame] | 28 | // refresh the objets after four seconds as network |
| 29 | // configuration takes 3-4 sec to reconfigure at most. |
| 30 | constexpr auto refreshTimeout = 4s; |
Ratan Gupta | e05083a | 2017-09-16 07:12:11 +0530 | [diff] [blame] | 31 | |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 32 | // Byte representations for common address types in network byte order |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame] | 33 | using InAddrAny = std::variant<in_addr, in6_addr>; |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 34 | |
William A. Kennington III | 3a70fa2 | 2018-09-20 18:48:20 -0700 | [diff] [blame] | 35 | using Timer = sdeventplus::utility::Timer<sdeventplus::ClockId::Monotonic>; |
| 36 | |
William A. Kennington III | dd9ef81 | 2022-10-05 02:08:02 -0700 | [diff] [blame] | 37 | struct string_hash : public std::hash<std::string_view> |
| 38 | { |
| 39 | using is_transparent = void; |
| 40 | }; |
| 41 | template <typename V> |
| 42 | using string_umap = |
| 43 | std::unordered_map<std::string, V, string_hash, std::equal_to<>>; |
William A. Kennington III | 9644479 | 2022-10-05 15:16:22 -0700 | [diff] [blame] | 44 | using string_uset = |
| 45 | std::unordered_set<std::string, string_hash, std::equal_to<>>; |
William A. Kennington III | dd9ef81 | 2022-10-05 02:08:02 -0700 | [diff] [blame] | 46 | |
William A. Kennington III | 3e471c5 | 2022-10-27 19:46:07 -0700 | [diff] [blame] | 47 | constexpr std::size_t hash_multi() noexcept |
William A. Kennington III | 991a8e8 | 2022-10-11 15:02:47 -0700 | [diff] [blame] | 48 | { |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | template <typename T, typename... Args> |
William A. Kennington III | 3e471c5 | 2022-10-27 19:46:07 -0700 | [diff] [blame] | 53 | constexpr std::size_t hash_multi(const T& v, Args... args) noexcept |
William A. Kennington III | 991a8e8 | 2022-10-11 15:02:47 -0700 | [diff] [blame] | 54 | { |
| 55 | const std::size_t seed = hash_multi(args...); |
| 56 | return seed ^ (std::hash<T>{}(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2)); |
| 57 | } |
| 58 | |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame] | 59 | namespace detail |
| 60 | { |
| 61 | |
| 62 | template <typename T> |
| 63 | constexpr bool vcontains() noexcept |
| 64 | { |
| 65 | return false; |
| 66 | } |
| 67 | |
| 68 | template <typename T, typename V, typename... Vs> |
| 69 | constexpr bool vcontains() noexcept |
| 70 | { |
| 71 | return vcontains<T, Vs...>() || std::is_same_v<T, V>; |
| 72 | } |
| 73 | |
| 74 | template <typename T, typename... Types> |
| 75 | constexpr std::enable_if_t<vcontains<T, Types...>(), bool> |
| 76 | veq(T t, std::variant<Types...> v) noexcept |
| 77 | { |
| 78 | return std::visit( |
| 79 | [t](auto v) { |
| 80 | if constexpr (std::is_same_v<T, decltype(v)>) |
| 81 | { |
| 82 | return v == t; |
| 83 | } |
| 84 | else |
| 85 | { |
| 86 | return false; |
| 87 | } |
| 88 | }, |
| 89 | v); |
| 90 | } |
| 91 | |
| 92 | template <typename T> |
| 93 | struct AddrBufMaker |
| 94 | { |
| 95 | }; |
| 96 | |
| 97 | template <> |
| 98 | struct AddrBufMaker<ether_addr> |
| 99 | { |
| 100 | public: |
| 101 | std::string_view operator()(ether_addr val) noexcept; |
| 102 | |
| 103 | private: |
| 104 | std::array<char, /*octet*/ 2 * /*octets*/ 6 + /*seps*/ 5> buf; |
| 105 | }; |
| 106 | |
| 107 | template <> |
| 108 | struct AddrBufMaker<in_addr> |
| 109 | { |
| 110 | public: |
| 111 | std::string_view operator()(in_addr val) noexcept; |
| 112 | |
| 113 | private: |
| 114 | std::array<char, /*octet*/ 3 * /*octets*/ 4 + /*seps*/ 3> buf; |
| 115 | }; |
| 116 | |
| 117 | template <> |
| 118 | struct AddrBufMaker<in6_addr> |
| 119 | { |
| 120 | public: |
| 121 | std::string_view operator()(in6_addr val) noexcept; |
| 122 | |
| 123 | private: |
| 124 | std::array<char, /*hextet*/ 4 * /*hextets*/ 8 + /*seps*/ 7> buf; |
| 125 | }; |
| 126 | |
| 127 | template <typename BufMaker> |
| 128 | struct FormatFromBuf |
| 129 | { |
| 130 | private: |
| 131 | fmt::formatter<std::string_view> formatter; |
| 132 | |
| 133 | public: |
| 134 | template <typename ParseContext> |
| 135 | constexpr auto parse(ParseContext& ctx) |
| 136 | { |
| 137 | return ctx.begin(); |
| 138 | } |
| 139 | |
| 140 | template <typename FormatContext> |
| 141 | auto format(auto v, FormatContext& ctx) const |
| 142 | { |
| 143 | return formatter.format(BufMaker{}(v), ctx); |
| 144 | } |
| 145 | }; |
| 146 | } // namespace detail |
Gunnar Mills | 57d9c50 | 2018-09-14 14:42:34 -0500 | [diff] [blame] | 147 | } // namespace network |
| 148 | } // namespace phosphor |
William A. Kennington III | 3e471c5 | 2022-10-27 19:46:07 -0700 | [diff] [blame] | 149 | |
| 150 | template <typename... Ts> |
| 151 | struct std::hash<std::tuple<Ts...>> |
| 152 | { |
| 153 | constexpr auto operator()(const std::tuple<Ts...>& t) const noexcept |
| 154 | { |
| 155 | return std::apply(phosphor::network::hash_multi<Ts...>, t); |
| 156 | } |
| 157 | }; |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame] | 158 | |
| 159 | namespace fmt |
| 160 | { |
| 161 | template <> |
| 162 | struct formatter<ether_addr> |
| 163 | : phosphor::network::detail::FormatFromBuf< |
| 164 | phosphor::network::detail::AddrBufMaker<ether_addr>> |
| 165 | { |
| 166 | }; |
| 167 | template <> |
| 168 | struct formatter<in_addr> |
| 169 | : phosphor::network::detail::FormatFromBuf< |
| 170 | phosphor::network::detail::AddrBufMaker<in_addr>> |
| 171 | { |
| 172 | }; |
| 173 | template <> |
| 174 | struct formatter<in6_addr> |
| 175 | : phosphor::network::detail::FormatFromBuf< |
| 176 | phosphor::network::detail::AddrBufMaker<in6_addr>> |
| 177 | { |
| 178 | }; |
| 179 | template <> |
| 180 | struct formatter<phosphor::network::InAddrAny> |
| 181 | { |
| 182 | private: |
| 183 | fmt::formatter<std::string_view> formatter; |
| 184 | |
| 185 | public: |
| 186 | template <typename ParseContext> |
| 187 | constexpr auto parse(ParseContext& ctx) |
| 188 | { |
| 189 | return ctx.begin(); |
| 190 | } |
| 191 | |
| 192 | template <typename FormatContext> |
| 193 | auto format(auto v, FormatContext& ctx) const |
| 194 | { |
| 195 | return std::visit( |
| 196 | [&](auto v) { |
| 197 | auto abm = |
| 198 | phosphor::network::detail::AddrBufMaker<decltype(v)>{}; |
| 199 | return formatter.format(abm(v), ctx); |
| 200 | }, |
| 201 | v); |
| 202 | } |
| 203 | }; |
| 204 | } // namespace fmt |
| 205 | |
| 206 | namespace std |
| 207 | { |
| 208 | string to_string(ether_addr value); |
| 209 | string to_string(in_addr value); |
| 210 | string to_string(in6_addr value); |
| 211 | string to_string(phosphor::network::InAddrAny value); |
| 212 | } // namespace std |
| 213 | |
| 214 | constexpr bool operator==(ether_addr lhs, ether_addr rhs) noexcept |
| 215 | { |
| 216 | return std::equal(lhs.ether_addr_octet, lhs.ether_addr_octet + 6, |
| 217 | rhs.ether_addr_octet); |
| 218 | } |
| 219 | |
| 220 | constexpr bool operator==(in_addr lhs, in_addr rhs) noexcept |
| 221 | { |
| 222 | return lhs.s_addr == rhs.s_addr; |
| 223 | } |
| 224 | |
| 225 | constexpr bool operator==(in6_addr lhs, in6_addr rhs) noexcept |
| 226 | { |
| 227 | return std::equal(lhs.s6_addr32, lhs.s6_addr32 + 4, rhs.s6_addr32); |
| 228 | } |
| 229 | |
| 230 | template <typename T> |
| 231 | constexpr std::enable_if_t<!std::is_same_v<phosphor::network::InAddrAny, T>, |
| 232 | bool> |
| 233 | operator==(phosphor::network::InAddrAny lhs, T rhs) noexcept |
| 234 | { |
| 235 | return phosphor::network::detail::veq(rhs, lhs); |
| 236 | } |
| 237 | |
| 238 | template <typename CharT, typename Traits> |
| 239 | std::basic_ostream<CharT, Traits>& |
| 240 | operator<<(std::basic_ostream<CharT, Traits>& os, ether_addr v) |
| 241 | { |
| 242 | return os << phosphor::network::detail::AddrBufMaker<ether_addr>{}(v); |
| 243 | } |
| 244 | |
| 245 | template <typename CharT, typename Traits> |
| 246 | std::basic_ostream<CharT, Traits>& |
| 247 | operator<<(std::basic_ostream<CharT, Traits>& os, in_addr v) |
| 248 | { |
| 249 | return os << phosphor::network::detail::AddrBufMaker<in_addr>{}(v); |
| 250 | } |
| 251 | |
| 252 | template <typename CharT, typename Traits> |
| 253 | std::basic_ostream<CharT, Traits>& |
| 254 | operator<<(std::basic_ostream<CharT, Traits>& os, in6_addr v) |
| 255 | { |
| 256 | return os << phosphor::network::detail::AddrBufMaker<in6_addr>{}(v); |
| 257 | } |
| 258 | |
| 259 | template <typename CharT, typename Traits> |
| 260 | std::basic_ostream<CharT, Traits>& |
| 261 | operator<<(std::basic_ostream<CharT, Traits>& os, |
| 262 | phosphor::network::InAddrAny v) |
| 263 | { |
| 264 | return os << std::visit( |
| 265 | [](auto v) { |
| 266 | return phosphor::network::detail::AddrBufMaker< |
| 267 | decltype(v)>{}(v); |
| 268 | }, |
| 269 | v); |
| 270 | } |