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mitre decbit changes
[unix-history] / usr / src / sys / netiso / tp_param.h
/***********************************************************
Copyright IBM Corporation 1987
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of IBM not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
******************************************************************/
/*
* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
*/
/*
* ARGO TP
*
* $Header: tp_param.h,v 5.3 88/11/18 17:28:18 nhall Exp $
* $Source: /usr/argo/sys/netiso/RCS/tp_param.h,v $
* @(#)tp_param.h 7.5 (Berkeley) %G% *
*
*/
#ifndef __TP_PARAM__
#define __TP_PARAM__
/******************************************************
* compile time parameters that can be changed
*****************************************************/
#define TP_CLASSES_IMPLEMENTED 0x11 /* zero and 4 */
#define TP_DECBIT_CLEAR_COUNT 3
#define N_TPREF 100
#define TP_SOCKBUFSIZE ((u_long)4096)
#define TP0_SOCKBUFSIZE ((u_long)512)
#define MAX_TSAP_SEL_LEN 64
/* maximum tpdu size we'll accept: */
#define TP_TPDUSIZE 0xc /* 4096 octets for classes 1-4*/
#define TP0_TPDUSIZE 0xb /* 2048 octets for class 0 */
#define TP_DFL_TPDUSIZE 0x7 /* 128 octets default */
/* NOTE: don't ever negotiate 8192 because could get
* wraparound in checksumming
* (No mtu is likely to be larger than 4K anyway...)
*/
#define TP_NRETRANS 1
#define TP_MAXPORT 0xefff
#define TP_RTT_NUM 0x7
/* ALPHA: to be used in the context: gain= 1/(2**alpha), or
* put another way, gaintimes(x) (x)>>alpha (forgetting the case alpha==0)
*/
#define TP_RTT_ALPHA 3
#define TP_RTV_ALPHA 2
/*
* not sure how to treat data on disconnect
*/
#define T_CONN_DATA 0x1
#define T_DISCONNECT 0x2
#define T_DISC_DATA 0x4
#define T_XDATA 0x8
#define ISO_CLNS 0
#define IN_CLNS 1
#define ISO_CONS 2
#define ISO_COSNS 3
#define TP_MAX_NETSERVICES 3
/* Indices into tp stats ackreason[i] */
#define _ACK_DONT_ 0
#define _ACK_STRAT_EACH_ 0x1
#define _ACK_STRAT_FULLWIN_ 0x2
#define _ACK_DUP_ 0x3
#define _ACK_EOT_ 0x4
#define _ACK_REORDER_ 0x5
#define _ACK_USRRCV_ 0x6
#define _ACK_FCC_ 0x7
#define _ACK_NUM_REASONS_ 0x8
/* masks for use in tp_stash() */
#define ACK_DONT 0
#define ACK_STRAT_EACH (1<< _ACK_STRAT_EACH_)
#define ACK_STRAT_FULLWIN (1<< _ACK_STRAT_FULLWIN_)
#define ACK_DUP (1<< _ACK_DUP_)
#define ACK_EOT (1<< _ACK_EOT_)
#define ACK_REORDER (1<< _ACK_REORDER_)
/******************************************************
* constants used in the protocol
*****************************************************/
#define TP_VERSION 0x1
#define TP_MAX_HEADER_LEN 256
#define TP_MIN_TPDUSIZE 0x7 /* 128 octets */
#define TP_MAX_TPDUSIZE 0xd /* 8192 octets */
#define TP_MAX_XPD_DATA 0x10 /* 16 octets */
#define TP_MAX_CC_DATA 0x20 /* 32 octets */
#define TP_MAX_CR_DATA TP_MAX_CC_DATA
#define TP_MAX_DR_DATA 0x40 /* 64 octets */
#define TP_XTD_FMT_BIT 0x80000000
#define TP_XTD_FMT_MASK 0x7fffffff
#define TP_NML_FMT_BIT 0x80
#define TP_NML_FMT_MASK 0x7f
/*
* values for the tpdu_type field, 2nd byte in a tpdu
*/
#define TP_MIN_TPDUTYPE 0x1
#define XPD_TPDU_type 0x1
#define XAK_TPDU_type 0x2
#define GR_TPDU_type 0x3
#define AK_TPDU_type 0x6
#define ER_TPDU_type 0x7
#define DR_TPDU_type 0x8
#define DC_TPDU_type 0xc
#define CC_TPDU_type 0xd
#define CR_TPDU_type 0xe
#define DT_TPDU_type 0xf
#define TP_MAX_TPDUTYPE 0xf
/*
* identifiers for the variable-length options in tpdus
*/
#define TPP_acktime 0x85
#define TPP_residER 0x86
#define TPP_priority 0x87
#define TPP_transdelay 0x88
#define TPP_throughput 0x89
#define TPP_subseq 0x8a
#define TPP_flow_cntl_conf 0x8c /* not implemented */
#define TPP_addl_info 0xe0
#define TPP_tpdu_size 0xc0
#define TPP_calling_sufx 0xc1
#define TPP_invalid_tpdu 0xc1 /* the bozos used a value twice */
#define TPP_called_sufx 0xc2
#define TPP_checksum 0xc3
#define TPP_vers 0xc4
#define TPP_security 0xc5
#define TPP_addl_opt 0xc6
#define TPP_alt_class 0xc7
#define TPP_perf_meas 0xc8 /* local item : perf meas on, svp */
/******************************************************
* Some fundamental data types
*****************************************************/
#ifndef TRUE
#define TRUE 1
#endif TRUE
#ifndef FALSE
#define FALSE 0
#endif FALSE
#define TP_LOCAL 22
#define TP_FOREIGN 33
#ifndef EOK
#define EOK 0
#endif EOK
#define TP_CLASS_0 (1<<0)
#define TP_CLASS_1 (1<<1)
#define TP_CLASS_2 (1<<2)
#define TP_CLASS_3 (1<<3)
#define TP_CLASS_4 (1<<4)
#define TP_FORCE 0x1
#define TP_STRICT 0x2
#ifndef MNULL
#define MNULL (struct mbuf *)0
#endif MNULL
/* if ../sys/mbuf.h gets MT_types up to 0x40, these will
* have to be changed:
*/
#define MT_XPD 0x44
#define MT_EOT 0x40
#define TP_ENOREF 0x80000000
typedef unsigned int SeqNum;
typedef unsigned short RefNum;
typedef int ProtoHook;
/******************************************************
* Some fundamental constants
*****************************************************/
#define TP_MIN_WIN 2048
#define TP_MAX_WIN 16384
#define TP_MAX_WIN_UNPRIV 8192
/******************************************************
* Macro used all over, for driver
*****************************************************/
#define DoEvent(x) \
((E.ev_number=(x)),(tp_driver(tpcb,&E)))
/******************************************************
* Some macros used all over, for timestamping
*****************************************************/
#define GET_CUR_TIME(tvalp) ((*tvalp) = time)
#define GET_TIME_SINCE(oldtvalp, diffp) {\
(diffp)->tv_sec = time.tv_sec - (oldtvalp)->tv_sec;\
(diffp)->tv_usec = time.tv_usec - (oldtvalp)->tv_usec;\
if( (diffp)->tv_usec <0 ) {\
(diffp)->tv_sec --;\
(diffp)->tv_usec = 1000000 - (diffp)->tv_usec;\
}\
}
/******************************************************
* Some macros used for address families
*****************************************************/
#define satosiso(ADDR) ((struct sockaddr_iso *)(ADDR))
#define satosin(ADDR) ((struct sockaddr_in *)(ADDR))
/******************************************************
* Macro used for changing types of mbufs
*****************************************************/
#define CHANGE_MTYPE(m, TYPE)\
if((m)->m_type != TYPE) { \
mbstat.m_mtypes[(m)->m_type]--; mbstat.m_mtypes[TYPE]++; \
(m)->m_type = TYPE; \
}
/******************************************************
* Macros used for adding options to a tpdu header and for
* parsing the headers.
* Options are variable-length and must be bcopy-d because on the
* RT your assignments must be N-word aligned for objects of length
* N. Such a drag.
*****************************************************/
struct tp_vbp {
u_char tpv_code;
char tpv_len;
char tpv_val;
};
#define vbptr(x) ((struct tp_vbp *)(x))
#define vbval(x,type) (*((type *)&(((struct tp_vbp *)(x))->tpv_val)))
#define vbcode(x) (vbptr(x)->tpv_code)
#define vblen(x) (vbptr(x)->tpv_len)
#define vb_putval(dst,type,src)\
bcopy((caddr_t)&(src),(caddr_t)&(((struct tp_vbp *)(dst))->tpv_val),\
sizeof(type))
#define vb_getval(src,type,dst)\
bcopy((caddr_t)&(((struct tp_vbp *)(src))->tpv_val),(caddr_t)&(dst),sizeof(type))
#define ADDOPTION(type, DU, len, src)\
{ register caddr_t P;\
P = (caddr_t)(DU) + (int)((DU)->tpdu_li);\
vbptr(P)->tpv_code = type;\
vbptr(P)->tpv_len = len;\
bcopy((caddr_t)&src, (caddr_t)&(vbptr(P)->tpv_val), (unsigned)len);\
DU->tpdu_li += len+2;/* 1 for code, 1 for length */\
}
/******************************************************
* Macro for the local credit:
* uses max transmission unit for the ll
* (as modified by the max TPDU size negotiated)
*****************************************************/
#if defined(ARGO_DEBUG)&&!defined(LOCAL_CREDIT_EXPAND)
#define LOCAL_CREDIT(tpcb) tp_local_credit(tpcb)
#else
#define LOCAL_CREDIT( tpcb ) {\
register struct sockbuf *xxsb = &((tpcb)->tp_sock->so_rcv);\
register int xxi = ((xxsb)->sb_hiwat-(xxsb)->sb_cc);\
register int maxcredit = ((tpcb)->tp_xtd_format?0xffff:0xf);\
xxi = (xxi<0) ? 0 : ((xxi)>>(tpcb)->tp_tpdusize);\
xxi = MIN(xxi, maxcredit); \
if (!(tpcb->tp_cebit_off)) { \
(tpcb)->tp_lcredit = ROUND((tpcb)->tp_win_recv); \
if (xxi < (tpcb)->tp_lcredit) { \
(tpcb)->tp_lcredit = xxi; \
} \
} \
else { \
(tpcb)->tp_lcredit = xxi; \
} \
}
#endif ARGO_DEBUG
#ifdef KERNEL
#ifndef tp_NSTATES
#include "tp_states.h"
#include "tp_events.h"
#endif tp_NSTATES
#endif KERNEL
#endif __TP_PARAM__
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.