// The following skip the next check of each field
extern void TCP_SkipCheck_Seq(bool Skip);
-extern bool TCP_Pkt_Check(size_t len, const void *data, size_t *ofs, int AF, const void *IP, short sport, short dport, uint32_t seq, uint32_t ack, uint8_t flags);
+extern bool TCP_Pkt_Check(size_t len, const void *data, size_t *ofs, size_t *out_len, int AF, const void *IP, short sport, short dport, uint32_t seq, uint32_t ack, uint8_t flags);
// - Get a field from a previously validated packet
extern uint32_t TCP_Pkt_GetSeq(size_t len, const void *data, int AF);