38 uint16_t
udp_sum_calc( uint16_t len_udp, uint32_t src_addr, uint16_t src_port, uint32_t dest_addr, uint16_t dest_port,
const void * buff );
39 uint16_t
udp_sum_calc2(uint16_t len_udp, uint16_t src_addr[],uint16_t dest_addr[],
bool padding, uint16_t buff[]);