/* PFLINUX: <netinet/tcp_fsm.h> — OpenBSD 8.0 TCP state machine header
 * (glibc has no equivalent).  Values copied from
 * _vendor/openbsd/obbsd/sys/netinet/tcp_fsm.h.  Kernel-only bodies
 * (TCPOUTFLAGS/TCPSTATES arrays) dropped; tcpstates[] is declared extern
 * and defined in tools/compat-user/bsd.c for pf_print_state.c. */
#ifndef _PFLINUX_NETINET_TCP_FSM_H
#define _PFLINUX_NETINET_TCP_FSM_H

#define TCP_NSTATES	11

#define TCPS_CLOSED		0	/* closed */
#define TCPS_LISTEN		1	/* listening for connection */
#define TCPS_SYN_SENT		2	/* active, have sent syn */
#define TCPS_SYN_RECEIVED	3	/* have sent and received syn */
/* states < TCPS_ESTABLISHED are those where connections not established */
#define TCPS_ESTABLISHED	4	/* established */
#define TCPS_CLOSE_WAIT		5	/* rcvd fin, waiting for close */
/* states > TCPS_CLOSE_WAIT are those where user has closed */
#define TCPS_FIN_WAIT_1		6	/* have closed, sent fin */
#define TCPS_CLOSING		7	/* closed xchd FIN; await FIN ACK */
#define TCPS_LAST_ACK		8	/* had fin and close; await FIN ACK */
/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
#define TCPS_FIN_WAIT_2		9	/* have closed, fin is acked */
#define TCPS_TIME_WAIT		10	/* in 2*msl quiet wait after close */

#define TCPS_HAVERCVDSYN(s)	((s) >= TCPS_SYN_RECEIVED)
#define TCPS_HAVEESTABLISHED(s)	((s) >= TCPS_ESTABLISHED)
#define TCPS_HAVERCVDFIN(s)	((s) >= TCPS_TIME_WAIT)

extern const char *const tcpstates[];

#endif /* _PFLINUX_NETINET_TCP_FSM_H */