diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/extra/checksum.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/extra/checksum.c b/src/extra/checksum.c index 4d52a99..42389aa 100644 --- a/src/extra/checksum.c +++ b/src/extra/checksum.c @@ -11,6 +11,7 @@ #include <stdio.h> #include <stdbool.h> +#include <endian.h> #include <arpa/inet.h> #include <netinet/ip.h> #include <netinet/ip6.h> @@ -26,8 +27,13 @@ uint16_t nfq_checksum(uint32_t sum, uint16_t *buf, int size) sum += *buf++; size -= sizeof(uint16_t); } - if (size) - sum += *(uint8_t *)buf; + if (size) { +#if __BYTE_ORDER == __BIG_ENDIAN + sum += (uint16_t)*(uint8_t *)buf << 8; +#else + sum += (uint16_t)*(uint8_t *)buf; +#endif + } sum = (sum >> 16) + (sum & 0xffff); sum += (sum >>16); |