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0053001 /*
0053002 tcp.h
0053003
0053004 Copyright 1995 Philip Homburg
0053005 */
0053006
0053007 #ifndef TCP_H
0053008 #define TCP_H
0053009
0053010 #define ISS_INC_FREQ 250000L
0053011 #define TCP_MAX_DATAGRAM 8192
0053012
0053013 #ifndef TCP_MAX_SND_WND_SIZE
0053014 #define TCP_MAX_SND_WND_SIZE ((CRAMPED ? 4 : 16) * 1024)
0053015 #endif
0053016
0053017 #ifndef TCP_MIN_RCV_WND_SIZE
0053018 #define TCP_MIN_RCV_WND_SIZE (4 * 1024)
0053019 #endif
0053020
0053021 #ifndef TCP_MAX_RCV_WND_SIZE
0053022 #define TCP_MAX_RCV_WND_SIZE ((CRAMPED ? 4 : 8) * 1024)
0053023 #endif
0053024
0053025 #define TCP_DEF_TOS 0
0053026 #define TCP_DEF_TTL 5 /* hops/seconds */
0053027 #define TCP_DEF_TTL_NEXT 30 /* hops/seconds */
0053028
0053029 /* An established TCP connection times out if no communication is possible
0053030 * for TCP_DEF_RT_DEAD clock ticks
0053031 */
0053032 #ifndef TCP_DEF_RT_DEAD
0053033 #define TCP_DEF_RT_DEAD (20L*60*HZ)
0053034 #endif
0053035
0053036 #define TCP_DEF_RT_MAX_CONNECT (5L*60*HZ) /* 5 minutes in ticks */
0053037 #define TCP_DEF_RT_MAX_LISTEN (1L*60*HZ) /* 1 minute in ticks */
0053038 #define TCP_DEF_RT_MAX_CLOSING (1L*60*HZ) /* 1 minute in ticks */
0053039
0053040 /* Minimum and maximum intervals for zero window probes. */
0053041 #define TCP_0WND_MIN (HZ)
0053042 #define TCP_0WND_MAX (5*60*HZ)
0053043
0053044 #define TCP_DEF_RTT 15 /* initial retransmission time in
0053045 * ticks
0053046 */
0053047 #define TCP_RTT_GRAN 5 /* minimal value of the rtt is
0053048 * TCP_RTT_GRAN * CLOCK_GRAN
0053049 */
0053050 #define TCP_RTT_MAX (10*HZ) /* The maximum retransmission interval
0053051 * is TCP_RTT_MAX ticks
0053052 */
0053053
0053054 #ifndef TCP_DEF_MSS
0053055 #define TCP_DEF_MSS 1400
0053056 #endif
0053057
0053058 #define TCP_DEF_CONF (NWTC_COPY | NWTC_LP_UNSET | NWTC_UNSET_RA | \
0053059 NWTC_UNSET_RP)
0053060 #define TCP_DEF_OPT (NWTO_NOFLAG)
0053061
0053062 struct acc;
0053063
0053064 void tcp_prep ARGS(( void ));
0053065 void tcp_init ARGS(( void ));
0053066 int tcp_open ARGS(( int port, int srfd,
0053067 get_userdata_t get_userdata, put_userdata_t put_userdata,
0053068 put_pkt_t put_pkt ));
0053069 int tcp_read ARGS(( int fd, size_t count));
0053070 int tcp_write ARGS(( int fd, size_t count));
0053071 int tcp_ioctl ARGS(( int fd, ioreq_t req));
0053072 int tcp_cancel ARGS(( int fd, int which_operation ));
0053073 void tcp_close ARGS(( int fd));
0053074
0053075 #endif /* TCP_H */
0053076
0053077 /*
0053078 * $PchId: tcp.h,v 1.8 1996/05/07 20:51:37 philip Exp $
0053079 */