Commit | Line | Data |
---|---|---|
5a0e08eb | 1 | /* tcp_fsm.h 4.12 81/12/21 */ |
8381e15f BJ |
2 | |
3 | /* | |
2b4b57cd | 4 | * TCP FSM state definitions. |
2ff61f9d | 5 | * Per RFC793, September, 1981. |
8381e15f BJ |
6 | */ |
7 | ||
2ff61f9d BJ |
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 */ | |
8a13b737 | 13 | #define TCPS_SYN_RECEIVED 3 /* have send and received syn */ |
a6503abf | 14 | /* states < TCPS_ESTABLISHED are those where connections not established */ |
2ff61f9d | 15 | #define TCPS_ESTABLISHED 4 /* established */ |
8a13b737 | 16 | #define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */ |
a6503abf | 17 | /* states > TCPS_CLOSE_WAIT are those where user has closed */ |
8a13b737 BJ |
18 | #define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */ |
19 | #define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */ | |
20 | #define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */ | |
21 | /* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */ | |
22 | #define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */ | |
23 | #define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */ | |
8381e15f | 24 | |
8a13b737 | 25 | #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED) |
2ff61f9d | 26 | #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT) |
8a13b737 BJ |
27 | |
28 | #ifdef TCPOUTFLAGS | |
29 | /* | |
30 | * Flags used when sending segments in tcp_output. | |
31 | * Basic flags (TH_RST,TH_ACK,TH_SYN,TH_FIN) are totally | |
b454c3ea BJ |
32 | * determined by state, with the proviso that TH_FIN is sent only |
33 | * if all data queued for output is included in the segment. | |
8a13b737 BJ |
34 | */ |
35 | u_char tcp_outflags[TCP_NSTATES] = { | |
36 | TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK, | |
37 | TH_ACK, TH_ACK, | |
4aed14e3 | 38 | TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_ACK, TH_ACK, |
8a13b737 BJ |
39 | }; |
40 | #endif | |
8381e15f | 41 | |
9c5022e3 | 42 | #ifdef KPROF |
eb44bfb2 | 43 | int tcp_acounts[TCP_NSTATES][PRU_NREQ]; |
8381e15f BJ |
44 | #endif |
45 | ||
8a13b737 | 46 | #ifdef TCPSTATES |
8381e15f | 47 | char *tcpstates[] = { |
2ff61f9d | 48 | "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", |
4aed14e3 BJ |
49 | "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING", |
50 | "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT", | |
8381e15f | 51 | }; |
8381e15f | 52 | #endif |