| 42,6 → 42,11 |
|---|
| |
| #define CRC_DIVIDER_LE 0xEDB88320 |
| |
| /** IP checksum value for computed zero checksum. |
| * Zero is returned as 0xFFFF (not flipped) |
| */ |
| #define IP_CHECKSUM_ZERO 0xFFFFu |
| |
| uint32_t compute_crc32_le( uint32_t seed, uint8_t * data, size_t length ){ |
| size_t index; |
| |
| 123,5 → 128,14 |
|---|
| return ( uint16_t ) sum; |
| } |
| |
| uint16_t ip_checksum( uint8_t * data, size_t length ){ |
| uint16_t checksum; |
| |
| checksum = compact_checksum(compute_checksum( 0, data, length )); |
| |
| // flip, zero is returned as 0xFFFF (not flipped) |
| return ( ~ checksum ) ? ( uint16_t ) ( ~ checksum ) : IP_CHECKSUM_ZERO; |
| } |
| |
| /** @} |
| */ |