1 /* tcp_fsm.h 4.8 81/11/25 */ 2 3 /* 4 * TCP FSM state definitions. 5 * Per RFC793, September, 1981. 6 */ 7 8 #define TCP_NSTATES 11 9 10 #define TCPS_CLOSED 0 /* closed */ 11 #define TCPS_LISTEN 1 /* listening for connection */ 12 #define TCPS_SYN_SENT 2 /* active, have sent syn */ 13 #define TCPS_SYN_RCVD 3 /* have send and received syn */ 14 /* states < TCPS_ESTABLISHED are those where connections not established */ 15 #define TCPS_ESTABLISHED 4 /* established */ 16 #define TCPS_CLOSE_WAIT 8 /* rcvd fin, waiting for close */ 17 /* states > TCPS_CLOSE_WAIT are those where user has closed */ 18 #define TCPS_FIN_WAIT_1 5 /* have closed, sent fin */ 19 #define TCPS_FIN_WAIT_2 6 /* have closed, fin is acked */ 20 #define TCPS_TIME_WAIT 7 /* in 2*msl quiet wait after close */ 21 #define TCPS_CLOSING 9 /* closed xchd FIN; await FIN ACK */ 22 #define TCPS_LAST_ACK 10 /* had fin and close; await FIN ACK */ 23 24 #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RCVD) 25 #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT) 26 27 #ifdef KPROF 28 int tcp_acounts[TCP_NSTATES][PRU_NREQ]; 29 #endif 30 31 #ifdef TCPSTATES 32 char *tcpstates[] = { 33 "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", 34 "ESTABLISHED", "FIN_WAIT1", "FIN_WAIT2", "TIME_WAIT", 35 "CLOSE_WAIT", "CLOSING", "LAST_ACK", 36 }; 37 #endif 38