#ifndef NFTABLES_TCPOPT_H

#define NFTABLES_TCPOPT_H

#include <proto.h>

#include <exthdr.h>

#include <statement.h>

extern struct expr *tcpopt_expr_alloc(const struct location *loc,

				      uint8_t type, uint8_t field);

extern void tcpopt_init_raw(struct expr *expr, uint8_t type,

			    unsigned int offset, unsigned int len,

			    uint32_t flags);

extern bool tcpopt_find_template(struct expr *expr, const struct expr *mask,

				 unsigned int *shift);

enum tcpopt_hdr_types {

	TCPOPTHDR_INVALID,

	TCPOPTHDR_EOL,

	TCPOPTHDR_NOOP,

	TCPOPTHDR_MAXSEG,

	TCPOPTHDR_WINDOW,

	TCPOPTHDR_SACK_PERMITTED,

	TCPOPTHDR_SACK0,

	TCPOPTHDR_SACK1,

	TCPOPTHDR_SACK2,

	TCPOPTHDR_SACK3,

	TCPOPTHDR_TIMESTAMP,

	TCPOPTHDR_ECHO,

	TCPOPTHDR_ECHO_REPLY,

	__TCPOPTHDR_MAX

};

enum tcpopt_hdr_fields {

	TCPOPTHDR_FIELD_INVALID,

	TCPOPTHDR_FIELD_KIND,

	TCPOPTHDR_FIELD_LENGTH,

	TCPOPTHDR_FIELD_SIZE,

	TCPOPTHDR_FIELD_COUNT,

	TCPOPTHDR_FIELD_LEFT,

	TCPOPTHDR_FIELD_RIGHT,

	TCPOPTHDR_FIELD_TSVAL,

	TCPOPTHDR_FIELD_TSECR,

};

extern const struct exthdr_desc *tcpopthdr_protocols[__TCPOPTHDR_MAX];

#endif /* NFTABLES_TCPOPT_H */