[unix-history] / usr / src / sys / netiso / tp_param.h

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)tp_param.h	7.13 (Berkeley) %G%
 */

/***********************************************************
		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 $
 *
 */

#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 */
#ifdef KERNEL
extern int N_TPREF;
#endif

#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			12		/* TCP_MAXRXTSHIFT + 1 */
#define		TP_MAXRXTSHIFT		6		/* factor of 64 */
#define		TP_MAXPORT			0xefff

/* 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
#define		TP_REXMTVAL(tpcb)\
	((tp_rttadd + (tpcb)->tp_rtt + ((tpcb)->tp_rtv) << 2) / tp_rttdiv)
#define		TP_RANGESET(tv, value, min, max) \
	((tv = value) > (max) ? (tv = max) : (tv < min ? tv = min : tv))

/*
 * 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 */
#define		TPP_ptpdu_size		0xf0	/* preferred TPDU size */
#define		TPP_inact_time		0xf2	/* inactivity time exchanged */


/******************************************************
 * 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;

/******************************************************
 * 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) { if (tpcb->tp_rsycnt == 0) {\
    register struct sockbuf *xxsb = &((tpcb)->tp_sock->so_rcv);\
    register int xxi = sbspace(xxsb);\
    xxi = (xxi<0) ? 0 : ((xxi) / (tpcb)->tp_l_tpdusize);\
    xxi = min(xxi, (tpcb)->tp_maxlcredit); \
    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
extern int tp_rttadd, tp_rttdiv;
#include <sys/syslog.h>
#define printf logpri(LOG_DEBUG),addlog

#ifndef  tp_NSTATES 

#include <netiso/tp_states.h>
#include <netiso/tp_events.h>
#if defined(__STDC__) || defined(__cplusplus)
#undef ATTR
#define ATTR(X) ev_union.EV_ ## X
#endif /* defined(__STDC__) || defined(__cplusplus) */

#endif  /* tp_NSTATES  */
#endif /* KERNEL */

#endif /* __TP_PARAM__ */
Commit	Line	Data
7bcd1bb8 KB	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*
4d8170e5	7	* @(#)tp_param.h 7.13 (Berkeley) %G%
7bcd1bb8 KB	8	*/
7bcd1bb8 KB	9
e8d13846 KS	10	/***********************************************************
	11	Copyright IBM Corporation 1987
	12
	13	All Rights Reserved
	14
	15	Permission to use, copy, modify, and distribute this software and its
	16	documentation for any purpose and without fee is hereby granted,
	17	provided that the above copyright notice appear in all copies and that
	18	both that copyright notice and this permission notice appear in
	19	supporting documentation, and that the name of IBM not be
	20	used in advertising or publicity pertaining to distribution of the
	21	software without specific, written prior permission.
	22
	23	IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
	24	ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
	25	IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
	26	ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	27	WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
	28	ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
	29	SOFTWARE.
	30
	31	******************************************************************/
	32
	33	/*
	34	* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
	35	*/
	36	/*
	37	* ARGO TP
	38	*
	39	* $Header: tp_param.h,v 5.3 88/11/18 17:28:18 nhall Exp $
	40	* $Source: /usr/argo/sys/netiso/RCS/tp_param.h,v $
	41	*
	42	*/
	43
	44	#ifndef __TP_PARAM__
	45	#define __TP_PARAM__
	46
	47
	48	/******************************************************
	49	* compile time parameters that can be changed
	50	*****************************************************/
	51
	52	#define TP_CLASSES_IMPLEMENTED 0x11 /* zero and 4 */
	53
	54	#define TP_DECBIT_CLEAR_COUNT 3
	55
07295075 KS	56	/#define N_TPREF 100 /
	57	#ifdef KERNEL
	58	extern int N_TPREF;
	59	#endif
e8d13846	60
a50e2bc0 KS	61	#define TP_SOCKBUFSIZE ((u_long)4096)
a50e2bc0 KS	62	#define TP0_SOCKBUFSIZE ((u_long)512)
e8d13846 KS	63	#define MAX_TSAP_SEL_LEN 64
	64
	65	/* maximum tpdu size we'll accept: */
	66	#define TP_TPDUSIZE 0xc /* 4096 octets for classes 1-4*/
	67	#define TP0_TPDUSIZE 0xb /* 2048 octets for class 0 */
	68	#define TP_DFL_TPDUSIZE 0x7 /* 128 octets default */
	69	/* NOTE: don't ever negotiate 8192 because could get
	70	* wraparound in checksumming
	71	* (No mtu is likely to be larger than 4K anyway...)
	72	*/
bdf41b09 KS	73	#define TP_NRETRANS 12 /* TCP_MAXRXTSHIFT + 1 */
bdf41b09 KS	74	#define TP_MAXRXTSHIFT 6 /* factor of 64 */
e8d13846 KS	75	#define TP_MAXPORT 0xefff
e8d13846 KS	76
e8d13846 KS	77	/* ALPHA: to be used in the context: gain= 1/(2**alpha), or
	78	* put another way, gaintimes(x) (x)>>alpha (forgetting the case alpha==0)
	79	*/
	80	#define TP_RTT_ALPHA 3
	81	#define TP_RTV_ALPHA 2
2aa335e1 KS	82	#define TP_REXMTVAL(tpcb)\
	83	((tp_rttadd + (tpcb)->tp_rtt + ((tpcb)->tp_rtv) << 2) / tp_rttdiv)
	84	#define TP_RANGESET(tv, value, min, max) \
	85	((tv = value) > (max) ? (tv = max) : (tv < min ? tv = min : tv))
e8d13846 KS	86
	87	/*
	88	* not sure how to treat data on disconnect
	89	*/
	90	#define T_CONN_DATA 0x1
	91	#define T_DISCONNECT 0x2
	92	#define T_DISC_DATA 0x4
	93	#define T_XDATA 0x8
	94
	95	#define ISO_CLNS 0
	96	#define IN_CLNS 1
	97	#define ISO_CONS 2
	98	#define ISO_COSNS 3
	99	#define TP_MAX_NETSERVICES 3
	100
	101	/* Indices into tp stats ackreason[i] */
	102	#define _ACK_DONT_ 0
	103	#define _ACK_STRAT_EACH_ 0x1
	104	#define _ACK_STRAT_FULLWIN_ 0x2
	105	#define _ACK_DUP_ 0x3
	106	#define _ACK_EOT_ 0x4
	107	#define _ACK_REORDER_ 0x5
	108	#define _ACK_USRRCV_ 0x6
	109	#define _ACK_FCC_ 0x7
	110	#define _ACK_NUM_REASONS_ 0x8
	111
	112	/* masks for use in tp_stash() */
	113	#define ACK_DONT 0
	114	#define ACK_STRAT_EACH (1<< _ACK_STRAT_EACH_)
	115	#define ACK_STRAT_FULLWIN (1<< _ACK_STRAT_FULLWIN_)
	116	#define ACK_DUP (1<< _ACK_DUP_)
	117	#define ACK_EOT (1<< _ACK_EOT_)
	118	#define ACK_REORDER (1<< _ACK_REORDER_)
	119
	120	/******************************************************
	121	* constants used in the protocol
	122	*****************************************************/
	123
	124	#define TP_VERSION 0x1
	125
	126	#define TP_MAX_HEADER_LEN 256
	127
	128	#define TP_MIN_TPDUSIZE 0x7 /* 128 octets */
	129	#define TP_MAX_TPDUSIZE 0xd /* 8192 octets */
	130
	131	#define TP_MAX_XPD_DATA 0x10 /* 16 octets */
	132	#define TP_MAX_CC_DATA 0x20 /* 32 octets */
	133	#define TP_MAX_CR_DATA TP_MAX_CC_DATA
	134	#define TP_MAX_DR_DATA 0x40 /* 64 octets */
	135
	136	#define TP_XTD_FMT_BIT 0x80000000
	137	#define TP_XTD_FMT_MASK 0x7fffffff
	138	#define TP_NML_FMT_BIT 0x80
	139	#define TP_NML_FMT_MASK 0x7f
	140
	141	/*
	142	* values for the tpdu_type field, 2nd byte in a tpdu
	143	*/
	144
	145	#define TP_MIN_TPDUTYPE 0x1
	146
	147	#define XPD_TPDU_type 0x1
	148	#define XAK_TPDU_type 0x2
	149	#define GR_TPDU_type 0x3
150	#define AK_TPDU_type 0x6
151	#define ER_TPDU_type 0x7
152	#define DR_TPDU_type 0x8
153	#define DC_TPDU_type 0xc
154	#define CC_TPDU_type 0xd
155	#define CR_TPDU_type 0xe
156	#define DT_TPDU_type 0xf
157
158	#define TP_MAX_TPDUTYPE 0xf
159
160	/*
161	* identifiers for the variable-length options in tpdus
162	*/
163
164	#define TPP_acktime 0x85
165	#define TPP_residER 0x86
166	#define TPP_priority 0x87
167	#define TPP_transdelay 0x88
168	#define TPP_throughput 0x89
169	#define TPP_subseq 0x8a
170	#define TPP_flow_cntl_conf 0x8c /* not implemented */
171	#define TPP_addl_info 0xe0
172	#define TPP_tpdu_size 0xc0
173	#define TPP_calling_sufx 0xc1
174	#define TPP_invalid_tpdu 0xc1 /* the bozos used a value twice */
175	#define TPP_called_sufx 0xc2
176	#define TPP_checksum 0xc3
177	#define TPP_vers 0xc4
178	#define TPP_security 0xc5
179	#define TPP_addl_opt 0xc6
180	#define TPP_alt_class 0xc7
181	#define TPP_perf_meas 0xc8 /* local item : perf meas on, svp */
2aa335e1 KS	182	#define TPP_ptpdu_size 0xf0 /* preferred TPDU size */
	183	#define TPP_inact_time 0xf2 /* inactivity time exchanged */
	184
e8d13846 KS	185
	186	/******************************************************
	187	* Some fundamental data types
	188	*****************************************************/
	189	#ifndef TRUE
	190	#define TRUE 1
4d8170e5	191	#endif /* TRUE */
e8d13846 KS	192
	193	#ifndef FALSE
	194	#define FALSE 0
4d8170e5	195	#endif /* FALSE */
e8d13846 KS	196
	197	#define TP_LOCAL 22
	198	#define TP_FOREIGN 33
	199
	200	#ifndef EOK
	201	#define EOK 0
4d8170e5	202	#endif /* EOK */
e8d13846 KS	203
	204	#define TP_CLASS_0 (1<<0)
	205	#define TP_CLASS_1 (1<<1)
	206	#define TP_CLASS_2 (1<<2)
	207	#define TP_CLASS_3 (1<<3)
	208	#define TP_CLASS_4 (1<<4)
	209
	210	#define TP_FORCE 0x1
	211	#define TP_STRICT 0x2
	212
	213	#ifndef MNULL
	214	#define MNULL (struct mbuf *)0
4d8170e5	215	#endif /* MNULL */
e663c139	216	/* if ../sys/mbuf.h gets MT_types up to 0x40, these will
e8d13846 KS	217	* have to be changed:
	218	*/
	219	#define MT_XPD 0x44
	220	#define MT_EOT 0x40
	221
	222	#define TP_ENOREF 0x80000000
	223
	224	typedef unsigned int SeqNum;
	225	typedef unsigned short RefNum;
	226	typedef int ProtoHook;
	227
e8d13846 KS	228	/******************************************************
	229	* Macro used all over, for driver
	230	*****************************************************/
	231
	232	#define DoEvent(x) \
	233	((E.ev_number=(x)),(tp_driver(tpcb,&E)))
	234
	235	/******************************************************
	236	* Some macros used all over, for timestamping
	237	*****************************************************/
	238
	239	#define GET_CUR_TIME(tvalp) ((*tvalp) = time)
	240
	241	#define GET_TIME_SINCE(oldtvalp, diffp) {\
	242	(diffp)->tv_sec = time.tv_sec - (oldtvalp)->tv_sec;\
	243	(diffp)->tv_usec = time.tv_usec - (oldtvalp)->tv_usec;\
	244	if( (diffp)->tv_usec <0 ) {\
	245	(diffp)->tv_sec --;\
	246	(diffp)->tv_usec = 1000000 - (diffp)->tv_usec;\
	247	}\
	248	}
	249
	250	/******************************************************
	251	* Some macros used for address families
	252	*****************************************************/
	253
	254	#define satosiso(ADDR) ((struct sockaddr_iso *)(ADDR))
	255	#define satosin(ADDR) ((struct sockaddr_in *)(ADDR))
	256
	257	/******************************************************
	258	* Macro used for changing types of mbufs
	259	*****************************************************/
	260
	261	#define CHANGE_MTYPE(m, TYPE)\
	262	if((m)->m_type != TYPE) { \
	263	mbstat.m_mtypes[(m)->m_type]--; mbstat.m_mtypes[TYPE]++; \
	264	(m)->m_type = TYPE; \
	265	}
	266
	267	/******************************************************
	268	* Macros used for adding options to a tpdu header and for
	269	* parsing the headers.
	270	* Options are variable-length and must be bcopy-d because on the
	271	* RT your assignments must be N-word aligned for objects of length
	272	* N. Such a drag.
	273	*****************************************************/
	274
	275	struct tp_vbp {
	276	u_char tpv_code;
	277	char tpv_len;
	278	char tpv_val;
	279	};
	280	#define vbptr(x) ((struct tp_vbp *)(x))
	281	#define vbval(x,type) (((type )&(((struct tp_vbp *)(x))->tpv_val)))
	282	#define vbcode(x) (vbptr(x)->tpv_code)
	283	#define vblen(x) (vbptr(x)->tpv_len)
	284
	285	#define vb_putval(dst,type,src)\
	286	bcopy((caddr_t)&(src),(caddr_t)&(((struct tp_vbp *)(dst))->tpv_val),\
	287	sizeof(type))
	288
	289	#define vb_getval(src,type,dst)\
	290	bcopy((caddr_t)&(((struct tp_vbp *)(src))->tpv_val),(caddr_t)&(dst),sizeof(type))
	291
292	#define ADDOPTION(type, DU, len, src)\
293	{ register caddr_t P;\
294	P = (caddr_t)(DU) + (int)((DU)->tpdu_li);\
295	vbptr(P)->tpv_code = type;\
296	vbptr(P)->tpv_len = len;\
a50e2bc0	297	bcopy((caddr_t)&src, (caddr_t)&(vbptr(P)->tpv_val), (unsigned)len);\
e8d13846 KS	298	DU->tpdu_li += len+2;/* 1 for code, 1 for length */\
	299	}
	300	/******************************************************
	301	* Macro for the local credit:
	302	* uses max transmission unit for the ll
	303	* (as modified by the max TPDU size negotiated)
	304	*****************************************************/
	305
	306	#if defined(ARGO_DEBUG)&&!defined(LOCAL_CREDIT_EXPAND)
	307	#define LOCAL_CREDIT(tpcb) tp_local_credit(tpcb)
	308	#else
bdf41b09	309	#define LOCAL_CREDIT(tpcb) { if (tpcb->tp_rsycnt == 0) {\
4e009707	310	register struct sockbuf *xxsb = &((tpcb)->tp_sock->so_rcv);\
7893315b KS	311	register int xxi = sbspace(xxsb);\
	312	xxi = (xxi<0) ? 0 : ((xxi) / (tpcb)->tp_l_tpdusize);\
	313	xxi = min(xxi, (tpcb)->tp_maxlcredit); \
4e009707 KS	314	if (!(tpcb->tp_cebit_off)) { \
	315	(tpcb)->tp_lcredit = ROUND((tpcb)->tp_win_recv); \
	316	if (xxi < (tpcb)->tp_lcredit) { \
	317	(tpcb)->tp_lcredit = xxi; \
	318	} \
bdf41b09	319	} else \
4e009707	320	(tpcb)->tp_lcredit = xxi; \
bdf41b09	321	} }
4d8170e5	322	#endif /* ARGO_DEBUG */
e8d13846 KS	323
e8d13846 KS	324	#ifdef KERNEL
2aa335e1	325	extern int tp_rttadd, tp_rttdiv;
5548a02f	326	#include <sys/syslog.h>
7893315b	327	#define printf logpri(LOG_DEBUG),addlog
e8d13846 KS	328
	329	#ifndef tp_NSTATES
	330
5548a02f KB	331	#include <netiso/tp_states.h>
5548a02f KB	332	#include <netiso/tp_events.h>
67857e5a KS	333	#if defined(__STDC__) \|\| defined(__cplusplus)
	334	#undef ATTR
	335	#define ATTR(X) ev_union.EV_ ## X
	336	#endif /* defined(__STDC__) \|\| defined(__cplusplus) */
e8d13846	337
4d8170e5 KB	338	#endif /* tp_NSTATES */
4d8170e5 KB	339	#endif /* KERNEL */
e8d13846	340
4d8170e5	341	#endif /* __TP_PARAM__ */