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> |
Patrick Venture | 189d44e | 2018-07-09 12:30:59 -0700 | [diff] [blame] | 5 | #include <systemd/sd-event.h> |
Ratan Gupta | 3681a50 | 2017-06-17 19:20:04 +0530 | [diff] [blame] | 6 | |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame^] | 7 | #include <algorithm> |
| 8 | #include <array> |
Patrick Venture | 189d44e | 2018-07-09 12:30:59 -0700 | [diff] [blame] | 9 | #include <chrono> |
Ratan Gupta | 3681a50 | 2017-06-17 19:20:04 +0530 | [diff] [blame] | 10 | #include <memory> |
William A. Kennington III | 3a70fa2 | 2018-09-20 18:48:20 -0700 | [diff] [blame] | 11 | #include <sdeventplus/clock.hpp> |
| 12 | #include <sdeventplus/utility/timer.hpp> |
Patrick Venture | 189d44e | 2018-07-09 12:30:59 -0700 | [diff] [blame] | 13 | #include <string> |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame^] | 14 | #include <string_view> |
| 15 | #include <type_traits> |
William A. Kennington III | dd9ef81 | 2022-10-05 02:08:02 -0700 | [diff] [blame] | 16 | #include <unordered_map> |
Willy Tu | f7dce2e | 2022-10-07 05:48:08 +0000 | [diff] [blame] | 17 | #include <unordered_set> |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 18 | #include <variant> |
Ratan Gupta | 0f9dc1b | 2017-09-03 17:57:50 +0530 | [diff] [blame] | 19 | |
Ratan Gupta | 82549cc | 2017-04-21 08:45:23 +0530 | [diff] [blame] | 20 | namespace phosphor |
| 21 | { |
| 22 | namespace network |
| 23 | { |
Ratan Gupta | e05083a | 2017-09-16 07:12:11 +0530 | [diff] [blame] | 24 | |
| 25 | using namespace std::chrono_literals; |
Ratan Gupta | 16f1288 | 2017-09-22 18:26:11 +0530 | [diff] [blame] | 26 | |
William A. Kennington III | c7cf25f | 2021-11-09 16:16:59 -0800 | [diff] [blame] | 27 | // wait for three seconds before reloading systemd-networkd |
| 28 | constexpr auto reloadTimeout = 3s; |
Ratan Gupta | 16f1288 | 2017-09-22 18:26:11 +0530 | [diff] [blame] | 29 | |
William A. Kennington III | d41db38 | 2021-11-09 20:42:29 -0800 | [diff] [blame] | 30 | // refresh the objets after four seconds as network |
| 31 | // configuration takes 3-4 sec to reconfigure at most. |
| 32 | constexpr auto refreshTimeout = 4s; |
Ratan Gupta | e05083a | 2017-09-16 07:12:11 +0530 | [diff] [blame] | 33 | |
Ratan Gupta | 0f9dc1b | 2017-09-03 17:57:50 +0530 | [diff] [blame] | 34 | /* Need a custom deleter for freeing up sd_event */ |
| 35 | struct EventDeleter |
| 36 | { |
| 37 | void operator()(sd_event* event) const |
| 38 | { |
William A. Kennington III | dc2f1b6 | 2021-05-13 21:20:19 -0700 | [diff] [blame] | 39 | sd_event_unref(event); |
Ratan Gupta | 0f9dc1b | 2017-09-03 17:57:50 +0530 | [diff] [blame] | 40 | } |
| 41 | }; |
| 42 | using EventPtr = std::unique_ptr<sd_event, EventDeleter>; |
| 43 | |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 44 | // Byte representations for common address types in network byte order |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame^] | 45 | using InAddrAny = std::variant<in_addr, in6_addr>; |
William A. Kennington III | 0d7ce48 | 2019-01-30 17:14:23 -0800 | [diff] [blame] | 46 | |
William A. Kennington III | 3a70fa2 | 2018-09-20 18:48:20 -0700 | [diff] [blame] | 47 | using Timer = sdeventplus::utility::Timer<sdeventplus::ClockId::Monotonic>; |
| 48 | |
William A. Kennington III | dd9ef81 | 2022-10-05 02:08:02 -0700 | [diff] [blame] | 49 | struct string_hash : public std::hash<std::string_view> |
| 50 | { |
| 51 | using is_transparent = void; |
| 52 | }; |
| 53 | template <typename V> |
| 54 | using string_umap = |
| 55 | 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] | 56 | using string_uset = |
| 57 | std::unordered_set<std::string, string_hash, std::equal_to<>>; |
William A. Kennington III | dd9ef81 | 2022-10-05 02:08:02 -0700 | [diff] [blame] | 58 | |
William A. Kennington III | 3e471c5 | 2022-10-27 19:46:07 -0700 | [diff] [blame] | 59 | constexpr std::size_t hash_multi() noexcept |
William A. Kennington III | 991a8e8 | 2022-10-11 15:02:47 -0700 | [diff] [blame] | 60 | { |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | template <typename T, typename... Args> |
William A. Kennington III | 3e471c5 | 2022-10-27 19:46:07 -0700 | [diff] [blame] | 65 | 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] | 66 | { |
| 67 | const std::size_t seed = hash_multi(args...); |
| 68 | return seed ^ (std::hash<T>{}(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2)); |
| 69 | } |
| 70 | |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame^] | 71 | namespace detail |
| 72 | { |
| 73 | |
| 74 | template <typename T> |
| 75 | constexpr bool vcontains() noexcept |
| 76 | { |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | template <typename T, typename V, typename... Vs> |
| 81 | constexpr bool vcontains() noexcept |
| 82 | { |
| 83 | return vcontains<T, Vs...>() || std::is_same_v<T, V>; |
| 84 | } |
| 85 | |
| 86 | template <typename T, typename... Types> |
| 87 | constexpr std::enable_if_t<vcontains<T, Types...>(), bool> |
| 88 | veq(T t, std::variant<Types...> v) noexcept |
| 89 | { |
| 90 | return std::visit( |
| 91 | [t](auto v) { |
| 92 | if constexpr (std::is_same_v<T, decltype(v)>) |
| 93 | { |
| 94 | return v == t; |
| 95 | } |
| 96 | else |
| 97 | { |
| 98 | return false; |
| 99 | } |
| 100 | }, |
| 101 | v); |
| 102 | } |
| 103 | |
| 104 | template <typename T> |
| 105 | struct AddrBufMaker |
| 106 | { |
| 107 | }; |
| 108 | |
| 109 | template <> |
| 110 | struct AddrBufMaker<ether_addr> |
| 111 | { |
| 112 | public: |
| 113 | std::string_view operator()(ether_addr val) noexcept; |
| 114 | |
| 115 | private: |
| 116 | std::array<char, /*octet*/ 2 * /*octets*/ 6 + /*seps*/ 5> buf; |
| 117 | }; |
| 118 | |
| 119 | template <> |
| 120 | struct AddrBufMaker<in_addr> |
| 121 | { |
| 122 | public: |
| 123 | std::string_view operator()(in_addr val) noexcept; |
| 124 | |
| 125 | private: |
| 126 | std::array<char, /*octet*/ 3 * /*octets*/ 4 + /*seps*/ 3> buf; |
| 127 | }; |
| 128 | |
| 129 | template <> |
| 130 | struct AddrBufMaker<in6_addr> |
| 131 | { |
| 132 | public: |
| 133 | std::string_view operator()(in6_addr val) noexcept; |
| 134 | |
| 135 | private: |
| 136 | std::array<char, /*hextet*/ 4 * /*hextets*/ 8 + /*seps*/ 7> buf; |
| 137 | }; |
| 138 | |
| 139 | template <typename BufMaker> |
| 140 | struct FormatFromBuf |
| 141 | { |
| 142 | private: |
| 143 | fmt::formatter<std::string_view> formatter; |
| 144 | |
| 145 | public: |
| 146 | template <typename ParseContext> |
| 147 | constexpr auto parse(ParseContext& ctx) |
| 148 | { |
| 149 | return ctx.begin(); |
| 150 | } |
| 151 | |
| 152 | template <typename FormatContext> |
| 153 | auto format(auto v, FormatContext& ctx) const |
| 154 | { |
| 155 | return formatter.format(BufMaker{}(v), ctx); |
| 156 | } |
| 157 | }; |
| 158 | } // namespace detail |
Gunnar Mills | 57d9c50 | 2018-09-14 14:42:34 -0500 | [diff] [blame] | 159 | } // namespace network |
| 160 | } // namespace phosphor |
William A. Kennington III | 3e471c5 | 2022-10-27 19:46:07 -0700 | [diff] [blame] | 161 | |
| 162 | template <typename... Ts> |
| 163 | struct std::hash<std::tuple<Ts...>> |
| 164 | { |
| 165 | constexpr auto operator()(const std::tuple<Ts...>& t) const noexcept |
| 166 | { |
| 167 | return std::apply(phosphor::network::hash_multi<Ts...>, t); |
| 168 | } |
| 169 | }; |
William A. Kennington III | bb0eacc | 2022-10-21 15:22:06 -0700 | [diff] [blame^] | 170 | |
| 171 | namespace fmt |
| 172 | { |
| 173 | template <> |
| 174 | struct formatter<ether_addr> |
| 175 | : phosphor::network::detail::FormatFromBuf< |
| 176 | phosphor::network::detail::AddrBufMaker<ether_addr>> |
| 177 | { |
| 178 | }; |
| 179 | template <> |
| 180 | struct formatter<in_addr> |
| 181 | : phosphor::network::detail::FormatFromBuf< |
| 182 | phosphor::network::detail::AddrBufMaker<in_addr>> |
| 183 | { |
| 184 | }; |
| 185 | template <> |
| 186 | struct formatter<in6_addr> |
| 187 | : phosphor::network::detail::FormatFromBuf< |
| 188 | phosphor::network::detail::AddrBufMaker<in6_addr>> |
| 189 | { |
| 190 | }; |
| 191 | template <> |
| 192 | struct formatter<phosphor::network::InAddrAny> |
| 193 | { |
| 194 | private: |
| 195 | fmt::formatter<std::string_view> formatter; |
| 196 | |
| 197 | public: |
| 198 | template <typename ParseContext> |
| 199 | constexpr auto parse(ParseContext& ctx) |
| 200 | { |
| 201 | return ctx.begin(); |
| 202 | } |
| 203 | |
| 204 | template <typename FormatContext> |
| 205 | auto format(auto v, FormatContext& ctx) const |
| 206 | { |
| 207 | return std::visit( |
| 208 | [&](auto v) { |
| 209 | auto abm = |
| 210 | phosphor::network::detail::AddrBufMaker<decltype(v)>{}; |
| 211 | return formatter.format(abm(v), ctx); |
| 212 | }, |
| 213 | v); |
| 214 | } |
| 215 | }; |
| 216 | } // namespace fmt |
| 217 | |
| 218 | namespace std |
| 219 | { |
| 220 | string to_string(ether_addr value); |
| 221 | string to_string(in_addr value); |
| 222 | string to_string(in6_addr value); |
| 223 | string to_string(phosphor::network::InAddrAny value); |
| 224 | } // namespace std |
| 225 | |
| 226 | constexpr bool operator==(ether_addr lhs, ether_addr rhs) noexcept |
| 227 | { |
| 228 | return std::equal(lhs.ether_addr_octet, lhs.ether_addr_octet + 6, |
| 229 | rhs.ether_addr_octet); |
| 230 | } |
| 231 | |
| 232 | constexpr bool operator==(in_addr lhs, in_addr rhs) noexcept |
| 233 | { |
| 234 | return lhs.s_addr == rhs.s_addr; |
| 235 | } |
| 236 | |
| 237 | constexpr bool operator==(in6_addr lhs, in6_addr rhs) noexcept |
| 238 | { |
| 239 | return std::equal(lhs.s6_addr32, lhs.s6_addr32 + 4, rhs.s6_addr32); |
| 240 | } |
| 241 | |
| 242 | template <typename T> |
| 243 | constexpr std::enable_if_t<!std::is_same_v<phosphor::network::InAddrAny, T>, |
| 244 | bool> |
| 245 | operator==(phosphor::network::InAddrAny lhs, T rhs) noexcept |
| 246 | { |
| 247 | return phosphor::network::detail::veq(rhs, lhs); |
| 248 | } |
| 249 | |
| 250 | template <typename CharT, typename Traits> |
| 251 | std::basic_ostream<CharT, Traits>& |
| 252 | operator<<(std::basic_ostream<CharT, Traits>& os, ether_addr v) |
| 253 | { |
| 254 | return os << phosphor::network::detail::AddrBufMaker<ether_addr>{}(v); |
| 255 | } |
| 256 | |
| 257 | template <typename CharT, typename Traits> |
| 258 | std::basic_ostream<CharT, Traits>& |
| 259 | operator<<(std::basic_ostream<CharT, Traits>& os, in_addr v) |
| 260 | { |
| 261 | return os << phosphor::network::detail::AddrBufMaker<in_addr>{}(v); |
| 262 | } |
| 263 | |
| 264 | template <typename CharT, typename Traits> |
| 265 | std::basic_ostream<CharT, Traits>& |
| 266 | operator<<(std::basic_ostream<CharT, Traits>& os, in6_addr v) |
| 267 | { |
| 268 | return os << phosphor::network::detail::AddrBufMaker<in6_addr>{}(v); |
| 269 | } |
| 270 | |
| 271 | template <typename CharT, typename Traits> |
| 272 | std::basic_ostream<CharT, Traits>& |
| 273 | operator<<(std::basic_ostream<CharT, Traits>& os, |
| 274 | phosphor::network::InAddrAny v) |
| 275 | { |
| 276 | return os << std::visit( |
| 277 | [](auto v) { |
| 278 | return phosphor::network::detail::AddrBufMaker< |
| 279 | decltype(v)>{}(v); |
| 280 | }, |
| 281 | v); |
| 282 | } |