11 #define DATA_BUF_SIZE 2048
14 int32_t
loopback_udps(uint8_t sn, uint8_t* buf, uint16_t port, uint8_t loopback_mode);
15 int32_t
loopback_tcps(uint8_t sn, uint8_t* buf, uint16_t port, uint8_t loopback_mode);
16 int32_t
loopback_tcpc(uint8_t sn, uint8_t* buf, uint8_t* destip, uint16_t destport, uint8_t loopback_mode);