| 1 | /*
|
|---|
| 2 | tcp.h
|
|---|
| 3 |
|
|---|
| 4 | Copyright 1995 Philip Homburg
|
|---|
| 5 | */
|
|---|
| 6 |
|
|---|
| 7 | #ifndef TCP_H
|
|---|
| 8 | #define TCP_H
|
|---|
| 9 |
|
|---|
| 10 | #define TCP_MAX_DATAGRAM 8192
|
|---|
| 11 |
|
|---|
| 12 | #ifndef TCP_MAX_SND_WND_SIZE
|
|---|
| 13 | #define TCP_MAX_SND_WND_SIZE (32*1024)
|
|---|
| 14 | #endif
|
|---|
| 15 |
|
|---|
| 16 | #ifndef TCP_MIN_RCV_WND_SIZE
|
|---|
| 17 | #define TCP_MIN_RCV_WND_SIZE (4*1024)
|
|---|
| 18 | #endif
|
|---|
| 19 |
|
|---|
| 20 | #ifndef TCP_MAX_RCV_WND_SIZE
|
|---|
| 21 | #define TCP_MAX_RCV_WND_SIZE (TCP_MIN_RCV_WND_SIZE + 28*1024)
|
|---|
| 22 | #endif
|
|---|
| 23 |
|
|---|
| 24 | #define TCP_DEF_TOS 0
|
|---|
| 25 | #define TCP_DEF_TTL 5 /* hops/seconds */
|
|---|
| 26 | #define TCP_DEF_TTL_NEXT 30 /* hops/seconds */
|
|---|
| 27 |
|
|---|
| 28 | /* An established TCP connection times out if no communication is possible
|
|---|
| 29 | * for TCP_DEF_RT_DEAD clock ticks
|
|---|
| 30 | */
|
|---|
| 31 | #ifndef TCP_DEF_RT_DEAD
|
|---|
| 32 | #define TCP_DEF_RT_DEAD (20L*60*HZ)
|
|---|
| 33 | #endif
|
|---|
| 34 |
|
|---|
| 35 | #define TCP_DEF_RT_MAX_CONNECT (5L*60*HZ) /* 5 minutes in ticks */
|
|---|
| 36 | #define TCP_DEF_RT_MAX_LISTEN (1L*60*HZ) /* 1 minute in ticks */
|
|---|
| 37 | #define TCP_DEF_RT_MAX_CLOSING (1L*60*HZ) /* 1 minute in ticks */
|
|---|
| 38 |
|
|---|
| 39 | /* Minimum and maximum intervals for zero window probes. */
|
|---|
| 40 | #define TCP_0WND_MIN (HZ)
|
|---|
| 41 | #define TCP_0WND_MAX (5*60*HZ)
|
|---|
| 42 |
|
|---|
| 43 | #define TCP_DEF_RTT 15 /* initial retransmission time in
|
|---|
| 44 | * ticks
|
|---|
| 45 | */
|
|---|
| 46 | #define TCP_RTT_GRAN 5 /* minimal value of the rtt is
|
|---|
| 47 | * TCP_RTT_GRAN * CLOCK_GRAN
|
|---|
| 48 | */
|
|---|
| 49 | #define TCP_RTT_MAX (10*HZ) /* The maximum retransmission interval
|
|---|
| 50 | * is TCP_RTT_MAX ticks
|
|---|
| 51 | */
|
|---|
| 52 | #define TCP_RTT_SMOOTH 16 /* weight is 15/16 */
|
|---|
| 53 | #define TCP_DRTT_MULT 4 /* weight of the deviation */
|
|---|
| 54 | #define TCP_RTT_SCALE 256 /* Scaled values for more accuracy */
|
|---|
| 55 |
|
|---|
| 56 | #ifndef TCP_DEF_KEEPALIVE
|
|---|
| 57 | #define TCP_DEF_KEEPALIVE (20L*60*HZ) /* Keepalive interval */
|
|---|
| 58 | #endif
|
|---|
| 59 |
|
|---|
| 60 | #ifndef TCP_DEF_MSS
|
|---|
| 61 | #define TCP_DEF_MSS 1400
|
|---|
| 62 | #endif
|
|---|
| 63 |
|
|---|
| 64 | #define TCP_MIN_PATH_MTU 500
|
|---|
| 65 | #define TCP_PMTU_INCR_IV (1L*60*HZ) /* 1 minute in ticks */
|
|---|
| 66 | #define TCP_PMTU_EN_IV (10L*60*HZ) /* 10 minutes in ticks */
|
|---|
| 67 | #define TCP_PMTU_INCR_FRAC 100 /* Add 1% each time */
|
|---|
| 68 | #define TCP_PMTU_BLACKHOLE (10*HZ) /* Assume a PMTU blackhole
|
|---|
| 69 | * after 10 seconds.
|
|---|
| 70 | */
|
|---|
| 71 |
|
|---|
| 72 | #define TCP_DEF_CONF (NWTC_COPY | NWTC_LP_UNSET | NWTC_UNSET_RA | \
|
|---|
| 73 | NWTC_UNSET_RP)
|
|---|
| 74 | #define TCP_DEF_OPT (NWTO_NOFLAG)
|
|---|
| 75 |
|
|---|
| 76 | #define TCP_DACK_RETRANS 3 /* # dup ACKs to start fast retrans. */
|
|---|
| 77 |
|
|---|
| 78 | struct acc;
|
|---|
| 79 |
|
|---|
| 80 | void tcp_prep ARGS(( void ));
|
|---|
| 81 | void tcp_init ARGS(( void ));
|
|---|
| 82 | int tcp_open ARGS(( int port, int srfd,
|
|---|
| 83 | get_userdata_t get_userdata, put_userdata_t put_userdata,
|
|---|
| 84 | put_pkt_t put_pkt, select_res_t select_res ));
|
|---|
| 85 | int tcp_read ARGS(( int fd, size_t count));
|
|---|
| 86 | int tcp_write ARGS(( int fd, size_t count));
|
|---|
| 87 | int tcp_ioctl ARGS(( int fd, ioreq_t req));
|
|---|
| 88 | int tcp_cancel ARGS(( int fd, int which_operation ));
|
|---|
| 89 | void tcp_close ARGS(( int fd));
|
|---|
| 90 |
|
|---|
| 91 | #endif /* TCP_H */
|
|---|
| 92 |
|
|---|
| 93 | /*
|
|---|
| 94 | * $PchId: tcp.h,v 1.17 2005/06/28 14:20:54 philip Exp $
|
|---|
| 95 | */
|
|---|
