| spx_var.h (11819) | spx_var.h (11947) |
|---|---|
| 1/* 2 * Copyright (c) 1995, Mike Mitchell 3 * Copyright (c) 1984, 1985, 1986, 1987, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 23 unchanged lines hidden (view full) --- 32 * SUCH DAMAGE. 33 * 34 * @(#)spx_var.h 35 */ 36 37#ifndef _NETIPX_SPX_VAR_H_ 38#define _NETIPX_SPX_VAR_H_ 39 | 1/* 2 * Copyright (c) 1995, Mike Mitchell 3 * Copyright (c) 1984, 1985, 1986, 1987, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 23 unchanged lines hidden (view full) --- 32 * SUCH DAMAGE. 33 * 34 * @(#)spx_var.h 35 */ 36 37#ifndef _NETIPX_SPX_VAR_H_ 38#define _NETIPX_SPX_VAR_H_ 39 |
| 40/* 41 * SPX control block, one per connection 42 */ 43struct spxpcb { 44 struct spx_q s_q; /* queue for out-of-order receipt */ 45 struct ipxpcb *s_ipxpcb; /* backpointer to internet pcb */ 46 u_char s_state; 47 u_char s_flags; 48#define SF_ACKNOW 0x01 /* Ack peer immediately */ 49#define SF_DELACK 0x02 /* Ack, but try to delay it */ 50#define SF_HI 0x04 /* Show headers on input */ 51#define SF_HO 0x08 /* Show headers on output */ 52#define SF_PI 0x10 /* Packet (datagram) interface */ 53#define SF_WIN 0x20 /* Window info changed */ 54#define SF_RXT 0x40 /* Rxt info changed */ 55#define SF_RVD 0x80 /* Calling from read usrreq routine */ 56 u_short s_mtu; /* Max packet size for this stream */ 57/* use sequence fields in headers to store sequence numbers for this 58 connection */ 59 struct ipx *s_ipx; 60 struct spxhdr s_shdr; /* prototype header to transmit */ 61#define s_cc s_shdr.spx_cc /* connection control (for EM bit) */ 62#define s_dt s_shdr.spx_dt /* datastream type */ 63#define s_sid s_shdr.spx_sid /* source connection identifier */ 64#define s_did s_shdr.spx_did /* destination connection identifier */ 65#define s_seq s_shdr.spx_seq /* sequence number */ 66#define s_ack s_shdr.spx_ack /* acknowledge number */ 67#define s_alo s_shdr.spx_alo /* allocation number */ 68#define s_dport s_ipx->ipx_dna.x_port /* where we are sending */ 69 struct spxhdr s_rhdr; /* last received header (in effect!)*/ 70 u_short s_rack; /* their acknowledge number */ 71 u_short s_ralo; /* their allocation number */ 72 u_short s_smax; /* highest packet # we have sent */ 73 u_short s_snxt; /* which packet to send next */ 74 75/* congestion control */ 76#define CUNIT 1024 /* scaling for ... */ 77 int s_cwnd; /* Congestion-controlled window */ 78 /* in packets * CUNIT */ 79 short s_swnd; /* == tcp snd_wnd, in packets */ 80 short s_smxw; /* == tcp max_sndwnd */ 81 /* difference of two spx_seq's can be 82 no bigger than a short */ 83 u_short s_swl1; /* == tcp snd_wl1 */ 84 u_short s_swl2; /* == tcp snd_wl2 */ 85 int s_cwmx; /* max allowable cwnd */ 86 int s_ssthresh; /* s_cwnd size threshhold for 87 * slow start exponential-to- 88 * linear switch */ 89/* transmit timing stuff 90 * srtt and rttvar are stored as fixed point, for convenience in smoothing. 91 * srtt has 3 bits to the right of the binary point, rttvar has 2. 92 */ 93 short s_idle; /* time idle */ 94 short s_timer[SPXT_NTIMERS]; /* timers */ 95 short s_rxtshift; /* log(2) of rexmt exp. backoff */ 96 short s_rxtcur; /* current retransmit value */ 97 u_short s_rtseq; /* packet being timed */ 98 short s_rtt; /* timer for round trips */ 99 short s_srtt; /* averaged timer */ 100 short s_rttvar; /* variance in round trip time */ 101 char s_force; /* which timer expired */ 102 char s_dupacks; /* counter to intuit xmt loss */ 103 104/* out of band data */ 105 char s_oobflags; 106#define SF_SOOB 0x08 /* sending out of band data */ 107#define SF_IOOB 0x10 /* receiving out of band data */ 108 char s_iobc; /* input characters */ 109/* debug stuff */ 110 u_short s_want; /* Last candidate for sending */ 111 char s_outx; /* exit taken from spx_output */ 112 char s_inx; /* exit taken from spx_input */ 113 u_short s_flags2; /* more flags for testing */ 114#define SF_NEWCALL 0x100 /* for new_recvmsg */ 115#define SO_NEWCALL 10 /* for new_recvmsg */ 116}; 117 118#define ipxtospxpcb(np) ((struct spxpcb *)(np)->ipxp_pcb) 119#define sotospxpcb(so) (ipxtospxpcb(sotoipxpcb(so))) 120 | |
| 121struct spxstat { 122 long spxs_connattempt; /* connections initiated */ 123 long spxs_accepts; /* connections accepted */ 124 long spxs_connects; /* connections established */ 125 long spxs_drops; /* connections dropped */ 126 long spxs_conndrops; /* embryonic connections dropped */ 127 long spxs_closed; /* conn. closed (includes drops) */ 128 long spxs_segstimed; /* segs where we tried to get rtt */ --- 83 unchanged lines hidden --- | 40struct spxstat { 41 long spxs_connattempt; /* connections initiated */ 42 long spxs_accepts; /* connections accepted */ 43 long spxs_connects; /* connections established */ 44 long spxs_drops; /* connections dropped */ 45 long spxs_conndrops; /* embryonic connections dropped */ 46 long spxs_closed; /* conn. closed (includes drops) */ 47 long spxs_segstimed; /* segs where we tried to get rtt */ --- 83 unchanged lines hidden --- |