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368 lines
12 KiB
C
368 lines
12 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tp_param.h 8.1 (Berkeley) 6/10/93
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* $Id: tp_param.h,v 1.2 1994/08/02 07:51:19 davidg Exp $
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*/
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#ifndef _NETISO_TP_PARAM_H_
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#define _NETISO_TP_PARAM_H_
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/***********************************************************
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Copyright IBM Corporation 1987
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of IBM not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/*
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* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
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*/
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/*
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* ARGO TP
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*
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* $Header: /home/ncvs/src/sys/netiso/tp_param.h,v 1.2 1994/08/02 07:51:19 davidg Exp $
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* $Source: /home/ncvs/src/sys/netiso/tp_param.h,v $
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*
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*/
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/******************************************************
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* compile time parameters that can be changed
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*****************************************************/
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#define TP_CLASSES_IMPLEMENTED 0x11 /* zero and 4 */
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#define TP_DECBIT_CLEAR_COUNT 3
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/*#define N_TPREF 100 */
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#ifdef KERNEL
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extern int N_TPREF;
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#endif
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#define TP_SOCKBUFSIZE ((u_long)4096)
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#define TP0_SOCKBUFSIZE ((u_long)512)
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#define MAX_TSAP_SEL_LEN 64
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/* maximum tpdu size we'll accept: */
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#define TP_TPDUSIZE 0xc /* 4096 octets for classes 1-4*/
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#define TP0_TPDUSIZE 0xb /* 2048 octets for class 0 */
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#define TP_DFL_TPDUSIZE 0x7 /* 128 octets default */
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/* NOTE: don't ever negotiate 8192 because could get
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* wraparound in checksumming
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* (No mtu is likely to be larger than 4K anyway...)
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*/
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#define TP_NRETRANS 12 /* TCP_MAXRXTSHIFT + 1 */
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#define TP_MAXRXTSHIFT 6 /* factor of 64 */
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#define TP_MAXPORT 0xefff
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/* ALPHA: to be used in the context: gain= 1/(2**alpha), or
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* put another way, gaintimes(x) (x)>>alpha (forgetting the case alpha==0)
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*/
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#define TP_RTT_ALPHA 3
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#define TP_RTV_ALPHA 2
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#define TP_REXMTVAL(tpcb)\
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((tp_rttadd + (tpcb)->tp_rtt + ((tpcb)->tp_rtv) << 2) / tp_rttdiv)
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#define TP_RANGESET(tv, value, min, max) \
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((tv = value) > (max) ? (tv = max) : (tv < min ? tv = min : tv))
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/*
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* not sure how to treat data on disconnect
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*/
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#define T_CONN_DATA 0x1
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#define T_DISCONNECT 0x2
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#define T_DISC_DATA 0x4
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#define T_XDATA 0x8
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#define ISO_CLNS 0
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#define IN_CLNS 1
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#define ISO_CONS 2
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#define ISO_COSNS 3
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#define TP_MAX_NETSERVICES 3
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/* Indices into tp stats ackreason[i] */
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#define _ACK_DONT_ 0
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#define _ACK_STRAT_EACH_ 0x1
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#define _ACK_STRAT_FULLWIN_ 0x2
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#define _ACK_DUP_ 0x3
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#define _ACK_EOT_ 0x4
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#define _ACK_REORDER_ 0x5
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#define _ACK_USRRCV_ 0x6
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#define _ACK_FCC_ 0x7
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#define _ACK_NUM_REASONS_ 0x8
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/* masks for use in tp_stash() */
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#define ACK_DONT 0
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#define ACK_STRAT_EACH (1<< _ACK_STRAT_EACH_)
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#define ACK_STRAT_FULLWIN (1<< _ACK_STRAT_FULLWIN_)
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#define ACK_DUP (1<< _ACK_DUP_)
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#define ACK_EOT (1<< _ACK_EOT_)
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#define ACK_REORDER (1<< _ACK_REORDER_)
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/******************************************************
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* constants used in the protocol
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*****************************************************/
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#define TP_VERSION 0x1
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#define TP_MAX_HEADER_LEN 256
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#define TP_MIN_TPDUSIZE 0x7 /* 128 octets */
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#define TP_MAX_TPDUSIZE 0xd /* 8192 octets */
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#define TP_MAX_XPD_DATA 0x10 /* 16 octets */
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#define TP_MAX_CC_DATA 0x20 /* 32 octets */
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#define TP_MAX_CR_DATA TP_MAX_CC_DATA
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#define TP_MAX_DR_DATA 0x40 /* 64 octets */
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#define TP_XTD_FMT_BIT 0x80000000
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#define TP_XTD_FMT_MASK 0x7fffffff
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#define TP_NML_FMT_BIT 0x80
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#define TP_NML_FMT_MASK 0x7f
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/*
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* values for the tpdu_type field, 2nd byte in a tpdu
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*/
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#define TP_MIN_TPDUTYPE 0x1
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#define XPD_TPDU_type 0x1
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#define XAK_TPDU_type 0x2
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#define GR_TPDU_type 0x3
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#define AK_TPDU_type 0x6
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#define ER_TPDU_type 0x7
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#define DR_TPDU_type 0x8
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#define DC_TPDU_type 0xc
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#define CC_TPDU_type 0xd
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#define CR_TPDU_type 0xe
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#define DT_TPDU_type 0xf
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#define TP_MAX_TPDUTYPE 0xf
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/*
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* identifiers for the variable-length options in tpdus
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*/
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#define TPP_acktime 0x85
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#define TPP_residER 0x86
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#define TPP_priority 0x87
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#define TPP_transdelay 0x88
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#define TPP_throughput 0x89
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#define TPP_subseq 0x8a
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#define TPP_flow_cntl_conf 0x8c /* not implemented */
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#define TPP_addl_info 0xe0
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#define TPP_tpdu_size 0xc0
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#define TPP_calling_sufx 0xc1
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#define TPP_invalid_tpdu 0xc1 /* the bozos used a value twice */
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#define TPP_called_sufx 0xc2
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#define TPP_checksum 0xc3
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#define TPP_vers 0xc4
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#define TPP_security 0xc5
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#define TPP_addl_opt 0xc6
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#define TPP_alt_class 0xc7
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#define TPP_perf_meas 0xc8 /* local item : perf meas on, svp */
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#define TPP_ptpdu_size 0xf0 /* preferred TPDU size */
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#define TPP_inact_time 0xf2 /* inactivity time exchanged */
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/******************************************************
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* Some fundamental data types
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*****************************************************/
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#ifndef TRUE
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#define TRUE 1
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#endif /* TRUE */
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#ifndef FALSE
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#define FALSE 0
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#endif /* FALSE */
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#define TP_LOCAL 22
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#define TP_FOREIGN 33
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#ifndef EOK
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#define EOK 0
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#endif /* EOK */
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#define TP_CLASS_0 (1<<0)
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#define TP_CLASS_1 (1<<1)
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#define TP_CLASS_2 (1<<2)
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#define TP_CLASS_3 (1<<3)
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#define TP_CLASS_4 (1<<4)
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#define TP_FORCE 0x1
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#define TP_STRICT 0x2
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#ifndef MNULL
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#define MNULL (struct mbuf *)0
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#endif /* MNULL */
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/* if ../sys/mbuf.h gets MT_types up to 0x40, these will
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* have to be changed:
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*/
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#define MT_XPD 0x44
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#define MT_EOT 0x40
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#define TP_ENOREF 0x80000000
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typedef unsigned int SeqNum;
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typedef unsigned short RefNum;
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typedef int ProtoHook;
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/******************************************************
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* Macro used all over, for driver
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*****************************************************/
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#define DoEvent(x) \
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((E.ev_number=(x)),(tp_driver(tpcb,&E)))
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/******************************************************
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* Some macros used all over, for timestamping
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*****************************************************/
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#define GET_CUR_TIME(tvalp) ((*tvalp) = time)
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#define GET_TIME_SINCE(oldtvalp, diffp) {\
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(diffp)->tv_sec = time.tv_sec - (oldtvalp)->tv_sec;\
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(diffp)->tv_usec = time.tv_usec - (oldtvalp)->tv_usec;\
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if( (diffp)->tv_usec <0 ) {\
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(diffp)->tv_sec --;\
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(diffp)->tv_usec = 1000000 - (diffp)->tv_usec;\
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}\
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}
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/******************************************************
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* Some macros used for address families
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*****************************************************/
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#define satosiso(ADDR) ((struct sockaddr_iso *)(ADDR))
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#define satosin(ADDR) ((struct sockaddr_in *)(ADDR))
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/******************************************************
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* Macro used for changing types of mbufs
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*****************************************************/
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#define CHANGE_MTYPE(m, TYPE)\
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if((m)->m_type != TYPE) { \
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mbstat.m_mtypes[(m)->m_type]--; mbstat.m_mtypes[TYPE]++; \
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(m)->m_type = TYPE; \
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}
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/******************************************************
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* Macros used for adding options to a tpdu header and for
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* parsing the headers.
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* Options are variable-length and must be bcopy-d because on the
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* RT your assignments must be N-word aligned for objects of length
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* N. Such a drag.
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*****************************************************/
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struct tp_vbp {
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u_char tpv_code;
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char tpv_len;
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char tpv_val;
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};
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#define vbptr(x) ((struct tp_vbp *)(x))
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#define vbval(x,type) (*((type *)&(((struct tp_vbp *)(x))->tpv_val)))
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#define vbcode(x) (vbptr(x)->tpv_code)
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#define vblen(x) (vbptr(x)->tpv_len)
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#define vb_putval(dst,type,src)\
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bcopy((caddr_t)&(src),(caddr_t)&(((struct tp_vbp *)(dst))->tpv_val),\
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sizeof(type))
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#define vb_getval(src,type,dst)\
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bcopy((caddr_t)&(((struct tp_vbp *)(src))->tpv_val),(caddr_t)&(dst),sizeof(type))
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#define ADDOPTION(type, DU, len, src)\
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{ register caddr_t P;\
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P = (caddr_t)(DU) + (int)((DU)->tpdu_li);\
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vbptr(P)->tpv_code = type;\
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vbptr(P)->tpv_len = len;\
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bcopy((caddr_t)&src, (caddr_t)&(vbptr(P)->tpv_val), (unsigned)len);\
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DU->tpdu_li += len+2;/* 1 for code, 1 for length */\
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}
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/******************************************************
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* Macro for the local credit:
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* uses max transmission unit for the ll
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* (as modified by the max TPDU size negotiated)
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*****************************************************/
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#if defined(ARGO_DEBUG)&&!defined(LOCAL_CREDIT_EXPAND)
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#define LOCAL_CREDIT(tpcb) tp_local_credit(tpcb)
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#else
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#define LOCAL_CREDIT(tpcb) { if (tpcb->tp_rsycnt == 0) {\
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register struct sockbuf *xxsb = &((tpcb)->tp_sock->so_rcv);\
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register int xxi = sbspace(xxsb);\
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xxi = (xxi<0) ? 0 : ((xxi) / (tpcb)->tp_l_tpdusize);\
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xxi = min(xxi, (tpcb)->tp_maxlcredit); \
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if (!(tpcb->tp_cebit_off)) { \
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(tpcb)->tp_lcredit = ROUND((tpcb)->tp_win_recv); \
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if (xxi < (tpcb)->tp_lcredit) { \
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(tpcb)->tp_lcredit = xxi; \
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} \
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} else \
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(tpcb)->tp_lcredit = xxi; \
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} }
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#endif /* ARGO_DEBUG */
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#ifdef KERNEL
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extern int tp_rttadd, tp_rttdiv;
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#include <sys/syslog.h>
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#define printf logpri(LOG_DEBUG),addlog
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#ifndef tp_NSTATES
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#include <netiso/tp_states.h>
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#include <netiso/tp_events.h>
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#if defined(__STDC__) || defined(__cplusplus)
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#undef ATTR
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#define ATTR(X) ev_union.EV_ ## X
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#endif /* defined(__STDC__) || defined(__cplusplus) */
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#endif /* tp_NSTATES */
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#endif /* KERNEL */
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#endif
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