| 44 | |
| 45 | struct [[gnu::packed]] Ethernet { |
| 46 | struct [[gnu::packed]] Address { |
| 47 | Address() = default; |
| 48 | Address(const uint8_t *addr) { bess::utils::Copy(bytes, addr, kSize); } |
| 49 | Address(const std::string &str); |
| 50 | |
| 51 | static const size_t kSize = 6; |
| 52 | |
| 53 | // Parses str in "aA:Bb:00:11:22:33" format and saves the address in parsed |
| 54 | // Returns false if the format is incorrect. |
| 55 | // (in that case, the content of parsed is undefined.) |
| 56 | bool FromString(const std::string &str); |
| 57 | |
| 58 | // Returns "aa:bb:00:11:22:33" (all in lower case) |
| 59 | std::string ToString() const; |
| 60 | |
| 61 | void Randomize(); |
| 62 | |
| 63 | bool IsBroadcast() const { |
| 64 | return bytes[0] == 0xff && bytes[1] == 0xff && bytes[2] == 0xff && |
| 65 | bytes[3] == 0xff && bytes[4] == 0xff && bytes[5] == 0xff; |
| 66 | } |
| 67 | |
| 68 | bool IsZero() const { |
| 69 | return bytes[0] == 0x00 && bytes[1] == 0x00 && bytes[2] == 0x00 && |
| 70 | bytes[3] == 0x00 && bytes[4] == 0x00 && bytes[5] == 0x00; |
| 71 | } |
| 72 | |
| 73 | bool operator<(const Address &o) const { |
| 74 | for (size_t i = 0; i < kSize; i++) { |
| 75 | if (bytes[i] < o.bytes[i]) { |
| 76 | return true; |
| 77 | } |
| 78 | } |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | bool operator==(const Address &o) const { |
| 83 | for (size_t i = 0; i < kSize; i++) { |
| 84 | if (bytes[i] != o.bytes[i]) { |
| 85 | return false; |
| 86 | } |
| 87 | } |
| 88 | return true; |
| 89 | } |
| 90 | |
| 91 | bool operator!=(const Address &o) const { |
| 92 | for (size_t i = 0; i < kSize; i++) { |
| 93 | if (bytes[i] != o.bytes[i]) { |
| 94 | return true; |
| 95 | } |
| 96 | } |
| 97 | return false; |
| 98 | } |
| 99 | |
| 100 | uint8_t bytes[kSize]; |
| 101 | }; |
| 102 | |
| 103 | enum Type : uint16_t { |