883 lines
23 KiB
C
883 lines
23 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_subr2.c 8.1 (Berkeley) 6/10/93
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* $Id: tp_subr2.c,v 1.3 1995/04/26 21:32:41 pst Exp $
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*/
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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_subr2.c,v 1.3 1995/04/26 21:32:41 pst Exp $
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* $Source: /home/ncvs/src/sys/netiso/tp_subr2.c,v $
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*
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* Some auxiliary routines:
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* tp_protocol_error: required by xebec- called when a combo of state,
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* event, predicate isn't covered for by the transition file.
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* tp_indicate: gives indications(signals) to the user process
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* tp_getoptions: initializes variables that are affected by the options
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* chosen.
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*/
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/* this def'n is to cause the expansion of this macro in the
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* routine tp_local_credit :
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*/
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#define LOCAL_CREDIT_EXPAND
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/domain.h>
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#include <sys/protosw.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/queue.h>
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#undef MNULL
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#include <netiso/argo_debug.h>
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#include <netiso/tp_param.h>
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#include <netiso/tp_ip.h>
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#include <netiso/iso.h>
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#include <netiso/iso_errno.h>
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#include <netiso/iso_pcb.h>
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#include <netiso/tp_timer.h>
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#include <netiso/tp_stat.h>
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#include <netiso/tp_tpdu.h>
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#include <netiso/tp_pcb.h>
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#include <netiso/tp_seq.h>
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#include <netiso/tp_trace.h>
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#include <netiso/tp_user.h>
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#include <netiso/cons.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#ifdef TRUE
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#undef FALSE
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#undef TRUE
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#endif
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#include <netccitt/x25.h>
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#include <netccitt/pk.h>
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#include <netccitt/pk_var.h>
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void tp_rsyset();
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/*
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* NAME: tp_local_credit()
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*
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* CALLED FROM:
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* tp_emit(), tp_usrreq()
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*
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* FUNCTION and ARGUMENTS:
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* Computes the local credit and stashes it in tpcb->tp_lcredit.
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* It's a macro in the production system rather than a procdure.
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*
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* RETURNS:
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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* This doesn't actually get called in a production system -
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* the macro gets expanded instead in place of calls to this proc.
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* But for debugging, we call this and that allows us to add
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* debugging messages easily here.
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*/
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void
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tp_local_credit(tpcb)
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struct tp_pcb *tpcb;
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{
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LOCAL_CREDIT(tpcb);
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IFDEBUG(D_CREDIT)
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printf("ref 0x%x lcdt 0x%x l_tpdusize 0x%x decbit 0x%x\n",
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tpcb->tp_lref,
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tpcb->tp_lcredit,
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tpcb->tp_l_tpdusize,
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tpcb->tp_decbit,
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tpcb->tp_cong_win
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);
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ENDDEBUG
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IFTRACE(D_CREDIT)
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tptraceTPCB(TPPTmisc,
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"lcdt tpdusz \n",
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tpcb->tp_lcredit, tpcb->tp_l_tpdusize, 0, 0);
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ENDTRACE
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}
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/*
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* NAME: tp_protocol_error()
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*
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* CALLED FROM:
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* tp_driver(), when it doesn't know what to do with
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* a combo of event, state, predicate
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*
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* FUNCTION and ARGUMENTS:
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* print error mesg
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*
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* RETURN VALUE:
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* EIO - always
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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int
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tp_protocol_error(e,tpcb)
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struct tp_event *e;
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struct tp_pcb *tpcb;
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{
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printf("TP PROTOCOL ERROR! tpcb 0x%x event 0x%x, state 0x%x\n",
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tpcb, e->ev_number, tpcb->tp_state);
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IFTRACE(D_DRIVER)
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tptraceTPCB(TPPTmisc, "PROTOCOL ERROR tpcb event state",
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tpcb, e->ev_number, tpcb->tp_state, 0 );
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ENDTRACE
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return EIO; /* for lack of anything better */
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}
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/* Not used at the moment */
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ProtoHook
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tp_drain()
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{
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return 0;
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}
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/*
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* NAME: tp_indicate()
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*
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* CALLED FROM:
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* tp.trans when XPD arrive, when a connection is being disconnected by
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* the arrival of a DR or ER, and when a connection times out.
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*
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* FUNCTION and ARGUMENTS:
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* (ind) is the type of indication : T_DISCONNECT, T_XPD
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* (error) is an E* value that will be put in the socket structure
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* to be passed along to the user later.
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* Gives a SIGURG to the user process or group indicated by the socket
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* attached to the tpcb.
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*
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* RETURNS: Rien
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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void
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tp_indicate(ind, tpcb, error)
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int ind;
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u_short error;
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register struct tp_pcb *tpcb;
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{
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register struct socket *so = tpcb->tp_sock;
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IFTRACE(D_INDICATION)
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tptraceTPCB(TPPTindicate, ind, *(u_short *)(tpcb->tp_lsuffix),
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*(u_short *)(tpcb->tp_fsuffix), error,so->so_pgid);
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ENDTRACE
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IFDEBUG(D_INDICATION)
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char *ls, *fs;
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ls = tpcb->tp_lsuffix,
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fs = tpcb->tp_fsuffix,
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printf(
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"indicate 0x%x lsuf 0x%02x%02x fsuf 0x%02x%02x err 0x%x noind 0x%x ref 0x%x\n",
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ind,
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*ls, *(ls+1), *fs, *(fs+1),
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error, /*so->so_pgrp,*/
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tpcb->tp_no_disc_indications,
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tpcb->tp_lref);
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ENDDEBUG
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if (ind == ER_TPDU) {
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register struct mbuf *m;
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struct tp_disc_reason x;
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if ((so->so_state & SS_CANTRCVMORE) == 0 &&
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(m = m_get(M_DONTWAIT, MT_OOBDATA)) != 0) {
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x.dr_hdr.cmsg_len = m->m_len = sizeof(x);
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x.dr_hdr.cmsg_level = SOL_TRANSPORT;
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x.dr_hdr.cmsg_type= TPOPT_DISC_REASON;
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x.dr_reason = error;
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*mtod(m, struct tp_disc_reason *) = x;
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sbappendrecord(&tpcb->tp_Xrcv, m);
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error = 0;
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} else
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error = ECONNRESET;
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}
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so->so_error = error;
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if (ind == T_DISCONNECT) {
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if (error == 0)
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so->so_error = ENOTCONN;
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if ( tpcb->tp_no_disc_indications )
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return;
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}
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IFTRACE(D_INDICATION)
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tptraceTPCB(TPPTmisc, "doing sohasoutofband(so)", so,0,0,0);
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ENDTRACE
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sohasoutofband(so);
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}
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/*
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* NAME : tp_getoptions()
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*
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* CALLED FROM:
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* tp.trans whenever we go into OPEN state
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*
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* FUNCTION and ARGUMENTS:
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* sets the proper flags and values in the tpcb, to control
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* the appropriate actions for the given class, options,
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* sequence space, etc, etc.
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*
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* RETURNS: Nada
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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void
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tp_getoptions(tpcb)
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struct tp_pcb *tpcb;
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{
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tpcb->tp_seqmask =
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tpcb->tp_xtd_format ? TP_XTD_FMT_MASK : TP_NML_FMT_MASK ;
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tpcb->tp_seqbit =
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tpcb->tp_xtd_format ? TP_XTD_FMT_BIT : TP_NML_FMT_BIT ;
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tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1;
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tpcb->tp_dt_ticks =
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max(tpcb->tp_dt_ticks, (tpcb->tp_peer_acktime + 2));
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tp_rsyset(tpcb);
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}
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/*
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* NAME: tp_recycle_tsuffix()
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*
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* CALLED FROM:
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* Called when a ref is frozen.
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*
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* FUNCTION and ARGUMENTS:
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* allows the suffix to be reused.
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*
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* RETURNS: zilch
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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void
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tp_recycle_tsuffix(tpcb)
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struct tp_pcb *tpcb;
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{
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bzero((caddr_t)tpcb->tp_lsuffix, sizeof( tpcb->tp_lsuffix));
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bzero((caddr_t)tpcb->tp_fsuffix, sizeof( tpcb->tp_fsuffix));
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tpcb->tp_fsuffixlen = tpcb->tp_lsuffixlen = 0;
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(tpcb->tp_nlproto->nlp_recycle_suffix)(tpcb->tp_npcb);
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}
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/*
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* NAME: tp_quench()
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*
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* CALLED FROM:
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* tp{af}_quench() when ICMP source quench or similar thing arrives.
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*
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* FUNCTION and ARGUMENTS:
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* Drop the congestion window back to 1.
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* Congestion window scheme:
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* Initial value is 1. ("slow start" as Nagle, et. al. call it)
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* For each good ack that arrives, the congestion window is increased
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* by 1 (up to max size of logical infinity, which is to say,
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* it doesn't wrap around).
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* Source quench causes it to drop back to 1.
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* tp_send() uses the smaller of (regular window, congestion window).
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* One retransmission strategy option is to have any retransmission
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* cause reset the congestion window back to 1.
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*
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* (cmd) is either PRC_QUENCH: source quench, or
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* PRC_QUENCH2: dest. quench (dec bit)
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*
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* RETURNS:
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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void
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tp_quench( tpcb, cmd )
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struct tp_pcb *tpcb;
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int cmd;
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{
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IFDEBUG(D_QUENCH)
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printf("tp_quench tpcb 0x%x ref 0x%x sufx 0x%x\n",
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tpcb, tpcb->tp_lref, *(u_short *)(tpcb->tp_lsuffix));
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printf("cong_win 0x%x decbit 0x%x \n",
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tpcb->tp_cong_win, tpcb->tp_decbit);
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ENDDEBUG
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switch(cmd) {
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case PRC_QUENCH:
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tpcb->tp_cong_win = tpcb->tp_l_tpdusize;
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IncStat(ts_quench);
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break;
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case PRC_QUENCH2:
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tpcb->tp_cong_win = tpcb->tp_l_tpdusize; /* might as well quench source also */
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tpcb->tp_decbit = TP_DECBIT_CLEAR_COUNT;
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IncStat(ts_rcvdecbit);
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break;
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}
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}
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/*
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* NAME: tp_netcmd()
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*
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* CALLED FROM:
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*
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* FUNCTION and ARGUMENTS:
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*
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* RETURNS:
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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tp_netcmd( tpcb, cmd )
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struct tp_pcb *tpcb;
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int cmd;
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{
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#ifdef TPCONS
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struct isopcb *isop;
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struct pklcd *lcp;
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if (tpcb->tp_netservice != ISO_CONS)
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return;
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isop = (struct isopcb *)tpcb->tp_npcb;
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lcp = (struct pklcd *)isop->isop_chan;
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switch (cmd) {
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case CONN_CLOSE:
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case CONN_REFUSE:
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if (isop->isop_refcnt == 1) {
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/* This is really superfluous, since it would happen
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anyway in iso_pcbdetach, although it is a courtesy
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to free up the x.25 channel before the refwait timer
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expires. */
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lcp->lcd_upper = 0;
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lcp->lcd_upnext = 0;
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pk_disconnect(lcp);
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isop->isop_chan = 0;
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isop->isop_refcnt = 0;
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}
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break;
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default:
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printf("tp_netcmd(0x%x, 0x%x) NOT IMPLEMENTED\n", tpcb, cmd);
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break;
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}
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#else /* TPCONS */
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printf("tp_netcmd(): X25 NOT CONFIGURED!!\n");
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#endif
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}
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/*
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* CALLED FROM:
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* tp_ctloutput() and tp_emit()
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* FUNCTION and ARGUMENTS:
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* Convert a class mask to the highest numeric value it represents.
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*/
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int
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tp_mask_to_num(x)
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u_char x;
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{
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register int j;
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for(j = 4; j>=0 ;j--) {
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if(x & (1<<j))
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break;
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}
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ASSERT( (j == 4) || (j == 0) ); /* for now */
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if( (j != 4) && (j != 0) ) {
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printf("ASSERTION ERROR: tp_mask_to_num: x 0x%x j %d\n",
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x, j);
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}
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IFTRACE(D_TPINPUT)
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tptrace(TPPTmisc, "tp_mask_to_num(x) returns j", x, j, 0, 0);
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ENDTRACE
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IFDEBUG(D_TPINPUT)
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printf("tp_mask_to_num(0x%x) returns 0x%x\n", x, j);
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ENDDEBUG
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return j;
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}
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static
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copyQOSparms(src, dst)
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struct tp_conn_param *src, *dst;
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{
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/* copy all but the bits stuff at the end */
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#define COPYSIZE (12 * sizeof(short))
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bcopy((caddr_t)src, (caddr_t)dst, COPYSIZE);
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dst->p_tpdusize = src->p_tpdusize;
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dst->p_ack_strat = src->p_ack_strat;
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dst->p_rx_strat = src->p_rx_strat;
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#undef COPYSIZE
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}
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/*
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* Determine a reasonable value for maxseg size.
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* If the route is known, check route for mtu.
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* We also initialize the congestion/slow start
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* window to be a single segment if the destination isn't local.
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* While looking at the routing entry, we also initialize other path-dependent
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* parameters from pre-set or cached values in the routing entry.
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*/
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void
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tp_mss(tpcb, nhdr_size)
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register struct tp_pcb *tpcb;
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int nhdr_size;
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{
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register struct rtentry *rt;
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struct ifnet *ifp;
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register int rtt, mss;
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u_long bufsize;
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int i, ssthresh = 0, rt_mss;
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struct socket *so;
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|
|
|
if (tpcb->tp_ptpdusize)
|
|
mss = tpcb->tp_ptpdusize << 7;
|
|
else
|
|
mss = 1 << tpcb->tp_tpdusize;
|
|
so = tpcb->tp_sock;
|
|
if ((rt = *(tpcb->tp_routep)) == 0) {
|
|
bufsize = so->so_rcv.sb_hiwat;
|
|
goto punt_route;
|
|
}
|
|
ifp = rt->rt_ifp;
|
|
|
|
#ifdef RTV_MTU /* if route characteristics exist ... */
|
|
/*
|
|
* While we're here, check if there's an initial rtt
|
|
* or rttvar. Convert from the route-table units
|
|
* to hz ticks for the smoothed timers and slow-timeout units
|
|
* for other inital variables.
|
|
*/
|
|
if (tpcb->tp_rtt == 0 && (rtt = rt->rt_rmx.rmx_rtt)) {
|
|
tpcb->tp_rtt = rtt * hz / RTM_RTTUNIT;
|
|
if (rt->rt_rmx.rmx_rttvar)
|
|
tpcb->tp_rtv = rt->rt_rmx.rmx_rttvar
|
|
* hz / RTM_RTTUNIT;
|
|
else
|
|
tpcb->tp_rtv = tpcb->tp_rtt;
|
|
}
|
|
/*
|
|
* if there's an mtu associated with the route, use it
|
|
*/
|
|
if (rt->rt_rmx.rmx_mtu)
|
|
rt_mss = rt->rt_rmx.rmx_mtu - nhdr_size;
|
|
else
|
|
#endif /* RTV_MTU */
|
|
rt_mss = (ifp->if_mtu - nhdr_size);
|
|
if (tpcb->tp_ptpdusize == 0 || /* assume application doesn't care */
|
|
mss > rt_mss /* network won't support what was asked for */)
|
|
mss = rt_mss;
|
|
/* can propose mtu which are multiples of 128 */
|
|
mss &= ~0x7f;
|
|
/*
|
|
* If there's a pipesize, change the socket buffer
|
|
* to that size.
|
|
*/
|
|
#ifdef RTV_SPIPE
|
|
if ((bufsize = rt->rt_rmx.rmx_sendpipe) > 0) {
|
|
#endif
|
|
bufsize = min(bufsize, so->so_snd.sb_hiwat);
|
|
(void) sbreserve(&so->so_snd, bufsize);
|
|
}
|
|
#ifdef RTV_SPIPE
|
|
if ((bufsize = rt->rt_rmx.rmx_recvpipe) > 0) {
|
|
#endif
|
|
bufsize = min(bufsize, so->so_rcv.sb_hiwat);
|
|
(void) sbreserve(&so->so_rcv, bufsize);
|
|
} else
|
|
bufsize = so->so_rcv.sb_hiwat;
|
|
#ifdef RTV_SSTHRESH
|
|
/*
|
|
* There's some sort of gateway or interface
|
|
* buffer limit on the path. Use this to set
|
|
* the slow start threshhold, but set the
|
|
* threshold to no less than 2*mss.
|
|
*/
|
|
ssthresh = rt->rt_rmx.rmx_ssthresh;
|
|
punt_route:
|
|
/*
|
|
* The current mss is initialized to the default value.
|
|
* If we compute a smaller value, reduce the current mss.
|
|
* If we compute a larger value, return it for use in sending
|
|
* a max seg size option.
|
|
* If we received an offer, don't exceed it.
|
|
* However, do not accept offers under 128 bytes.
|
|
*/
|
|
if (tpcb->tp_l_tpdusize)
|
|
mss = min(mss, tpcb->tp_l_tpdusize);
|
|
/*
|
|
* We want a minimum recv window of 4 packets to
|
|
* signal packet loss by duplicate acks.
|
|
*/
|
|
mss = min(mss, bufsize >> 2) & ~0x7f;
|
|
mss = max(mss, 128); /* sanity */
|
|
tpcb->tp_cong_win =
|
|
(rt == 0 || (rt->rt_flags & RTF_GATEWAY)) ? mss : bufsize;
|
|
tpcb->tp_l_tpdusize = mss;
|
|
tp_rsyset(tpcb);
|
|
tpcb->tp_ssthresh = max(2 * mss, ssthresh);
|
|
/* Calculate log2 of mss */
|
|
for (i = TP_MIN_TPDUSIZE + 1; i <= TP_MAX_TPDUSIZE; i++)
|
|
if ((1 << i) > mss)
|
|
break;
|
|
i--;
|
|
tpcb->tp_tpdusize = i;
|
|
#endif /* RTV_MTU */
|
|
}
|
|
|
|
/*
|
|
* CALLED FROM:
|
|
* tp_usrreq on PRU_CONNECT and tp_input on receipt of CR
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* -- An mbuf containing the peer's network address.
|
|
* -- Our control block, which will be modified
|
|
* -- In the case of cons, a control block for that layer.
|
|
*
|
|
*
|
|
* RETURNS:
|
|
* errno value :
|
|
* EAFNOSUPPORT if can't find an nl_protosw for x.25 (really could panic)
|
|
* ECONNREFUSED if trying to run TP0 with non-type 37 address
|
|
* possibly other E* returned from cons_netcmd()
|
|
*
|
|
* SIDE EFFECTS:
|
|
* Determines recommended tpdusize, buffering and intial delays
|
|
* based on information cached on the route.
|
|
*/
|
|
int
|
|
tp_route_to( m, tpcb, channel)
|
|
struct mbuf *m;
|
|
register struct tp_pcb *tpcb;
|
|
caddr_t channel;
|
|
{
|
|
register struct sockaddr_iso *siso; /* NOTE: this may be a sockaddr_in */
|
|
extern struct tp_conn_param tp_conn_param[];
|
|
int error = 0, save_netservice = tpcb->tp_netservice;
|
|
register struct rtentry *rt = 0;
|
|
int nhdr_size, mtu, bufsize;
|
|
|
|
siso = mtod(m, struct sockaddr_iso *);
|
|
IFTRACE(D_CONN)
|
|
tptraceTPCB(TPPTmisc,
|
|
"route_to: so afi netservice class",
|
|
tpcb->tp_sock, siso->siso_addr.isoa_genaddr[0], tpcb->tp_netservice,
|
|
tpcb->tp_class);
|
|
ENDTRACE
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_route_to( m x%x, channel 0x%x, tpcb 0x%x netserv 0x%x)\n",
|
|
m, channel, tpcb, tpcb->tp_netservice);
|
|
printf("m->mlen x%x, m->m_data:\n", m->m_len);
|
|
dump_buf(mtod(m, caddr_t), m->m_len);
|
|
ENDDEBUG
|
|
if (channel) {
|
|
#ifdef TPCONS
|
|
struct pklcd *lcp = (struct pklcd *)channel;
|
|
struct isopcb *isop = (struct isopcb *)lcp->lcd_upnext,
|
|
*isop_new = (struct isopcb *)tpcb->tp_npcb;
|
|
/* The next 2 lines believe that you haven't
|
|
set any network level options or done a pcbconnect
|
|
and XXXXXXX'edly apply to both inpcb's and isopcb's */
|
|
remque(isop_new);
|
|
free(isop_new, M_PCB);
|
|
tpcb->tp_npcb = (caddr_t)isop;
|
|
tpcb->tp_netservice = ISO_CONS;
|
|
tpcb->tp_nlproto = nl_protosw + ISO_CONS;
|
|
if (isop->isop_refcnt++ == 0) {
|
|
iso_putsufx(isop, tpcb->tp_lsuffix, tpcb->tp_lsuffixlen, TP_LOCAL);
|
|
isop->isop_socket = tpcb->tp_sock;
|
|
} else
|
|
/* there are already connections sharing this */;
|
|
#endif
|
|
} else {
|
|
switch (siso->siso_family) {
|
|
default:
|
|
error = EAFNOSUPPORT;
|
|
goto done;
|
|
#ifdef ISO
|
|
case AF_ISO:
|
|
{
|
|
struct isopcb *isop = (struct isopcb *)tpcb->tp_npcb;
|
|
int flags = tpcb->tp_sock->so_options & SO_DONTROUTE;
|
|
tpcb->tp_netservice = ISO_CLNS;
|
|
if (clnp_route(&siso->siso_addr, &isop->isop_route,
|
|
flags, (void **)0, (void **)0) == 0) {
|
|
rt = isop->isop_route.ro_rt;
|
|
if (rt && rt->rt_flags & RTF_PROTO1)
|
|
tpcb->tp_netservice = ISO_CONS;
|
|
}
|
|
} break;
|
|
#endif
|
|
#ifdef INET
|
|
case AF_INET:
|
|
tpcb->tp_netservice = IN_CLNS;
|
|
#endif
|
|
}
|
|
if (tpcb->tp_nlproto->nlp_afamily != siso->siso_family) {
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_route_to( CHANGING nlproto old 0x%x new 0x%x)\n",
|
|
save_netservice, tpcb->tp_netservice);
|
|
ENDDEBUG
|
|
if (error = tp_set_npcb(tpcb))
|
|
goto done;
|
|
}
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_route_to calling nlp_pcbconn, netserv %d\n",
|
|
tpcb->tp_netservice);
|
|
ENDDEBUG
|
|
tpcb->tp_nlproto = nl_protosw + tpcb->tp_netservice;
|
|
error = (tpcb->tp_nlproto->nlp_pcbconn)(tpcb->tp_npcb, m);
|
|
}
|
|
if (error)
|
|
goto done;
|
|
nhdr_size = tpcb->tp_nlproto->nlp_mtu(tpcb); /* only gets common info */
|
|
tp_mss(tpcb, nhdr_size);
|
|
done:
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_route_to returns 0x%x\n", error);
|
|
ENDDEBUG
|
|
IFTRACE(D_CONN)
|
|
tptraceTPCB(TPPTmisc, "route_to: returns: error netserv class", error,
|
|
tpcb->tp_netservice, tpcb->tp_class, 0);
|
|
ENDTRACE
|
|
return error;
|
|
}
|
|
|
|
|
|
/* class zero version */
|
|
void
|
|
tp0_stash( tpcb, e )
|
|
register struct tp_pcb *tpcb;
|
|
register struct tp_event *e;
|
|
{
|
|
#ifndef lint
|
|
#define E e->ATTR(DT_TPDU)
|
|
#else /* lint */
|
|
#define E e->ev_union.EV_DT_TPDU
|
|
#endif /* lint */
|
|
|
|
register struct sockbuf *sb = &tpcb->tp_sock->so_rcv;
|
|
register struct isopcb *isop = (struct isopcb *)tpcb->tp_npcb;
|
|
|
|
IFPERF(tpcb)
|
|
PStat(tpcb, Nb_from_ll) += E.e_datalen;
|
|
tpmeas(tpcb->tp_lref, TPtime_from_ll, &e->e_time,
|
|
E.e_seq, PStat(tpcb, Nb_from_ll), E.e_datalen);
|
|
ENDPERF
|
|
|
|
IFDEBUG(D_STASH)
|
|
printf("stash EQ: seq 0x%x datalen 0x%x eot 0x%x",
|
|
E.e_seq, E.e_datalen, E.e_eot);
|
|
ENDDEBUG
|
|
|
|
IFTRACE(D_STASH)
|
|
tptraceTPCB(TPPTmisc, "stash EQ: seq len eot",
|
|
E.e_seq, E.e_datalen, E.e_eot, 0);
|
|
ENDTRACE
|
|
|
|
if ( E.e_eot ) {
|
|
register struct mbuf *n = E.e_data;
|
|
n->m_flags |= M_EOR;
|
|
n->m_act = MNULL; /* set on tp_input */
|
|
}
|
|
sbappend(sb, E.e_data);
|
|
IFDEBUG(D_STASH)
|
|
dump_mbuf(sb->sb_mb, "stash 0: so_rcv after appending");
|
|
ENDDEBUG
|
|
if (tpcb->tp_netservice != ISO_CONS)
|
|
printf("tp0_stash: tp running over something wierd\n");
|
|
else {
|
|
register struct pklcd *lcp = (struct pklcd *)isop->isop_chan;
|
|
pk_flowcontrol(lcp, sbspace(sb) <= 0, 1);
|
|
}
|
|
}
|
|
|
|
void
|
|
tp0_openflow(tpcb)
|
|
register struct tp_pcb *tpcb;
|
|
{
|
|
register struct isopcb *isop = (struct isopcb *)tpcb->tp_npcb;
|
|
if (tpcb->tp_netservice != ISO_CONS)
|
|
printf("tp0_openflow: tp running over something wierd\n");
|
|
else {
|
|
register struct pklcd *lcp = (struct pklcd *)isop->isop_chan;
|
|
if (lcp->lcd_rxrnr_condition)
|
|
pk_flowcontrol(lcp, 0, 0);
|
|
}
|
|
}
|
|
#ifndef TPCONS
|
|
static
|
|
pk_flowcontrol() {}
|
|
#endif
|
|
|
|
#ifdef TP_PERF_MEAS
|
|
/*
|
|
* CALLED FROM:
|
|
* tp_ctloutput() when the user sets TPOPT_PERF_MEAS on
|
|
* and tp_newsocket() when a new connection is made from
|
|
* a listening socket with tp_perf_on == true.
|
|
* FUNCTION and ARGUMENTS:
|
|
* (tpcb) is the usual; this procedure gets a clear cluster mbuf for
|
|
* a tp_pmeas structure, and makes tpcb->tp_p_meas point to it.
|
|
* RETURN VALUE:
|
|
* ENOBUFS if it cannot get a cluster mbuf.
|
|
*/
|
|
|
|
int
|
|
tp_setup_perf(tpcb)
|
|
register struct tp_pcb *tpcb;
|
|
{
|
|
register struct mbuf *q;
|
|
|
|
if( tpcb->tp_p_meas == 0 ) {
|
|
MGET(q, M_WAITOK, MT_PCB);
|
|
if (q == 0)
|
|
return ENOBUFS;
|
|
MCLGET(q, M_WAITOK);
|
|
if ((q->m_flags & M_EXT) == 0) {
|
|
(void) m_free(q);
|
|
return ENOBUFS;
|
|
}
|
|
q->m_len = sizeof (struct tp_pmeas);
|
|
tpcb->tp_p_mbuf = q;
|
|
tpcb->tp_p_meas = mtod(q, struct tp_pmeas *);
|
|
bzero( (caddr_t)tpcb->tp_p_meas, sizeof (struct tp_pmeas) );
|
|
IFDEBUG(D_PERF_MEAS)
|
|
printf(
|
|
"tpcb 0x%x so 0x%x ref 0x%x tp_p_meas 0x%x tp_perf_on 0x%x\n",
|
|
tpcb, tpcb->tp_sock, tpcb->tp_lref,
|
|
tpcb->tp_p_meas, tpcb->tp_perf_on);
|
|
ENDDEBUG
|
|
tpcb->tp_perf_on = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif /* TP_PERF_MEAS */
|
|
|
|
#ifdef ARGO_DEBUG
|
|
dump_addr (addr)
|
|
register struct sockaddr *addr;
|
|
{
|
|
switch( addr->sa_family ) {
|
|
case AF_INET:
|
|
dump_inaddr((struct sockaddr_in *)addr);
|
|
break;
|
|
#ifdef ISO
|
|
case AF_ISO:
|
|
dump_isoaddr((struct sockaddr_iso *)addr);
|
|
break;
|
|
#endif /* ISO */
|
|
default:
|
|
printf("BAD AF: 0x%x\n", addr->sa_family);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define MAX_COLUMNS 8
|
|
/*
|
|
* Dump the buffer to the screen in a readable format. Format is:
|
|
*
|
|
* hex/dec where hex is the hex format, dec is the decimal format.
|
|
* columns of hex/dec numbers will be printed, followed by the
|
|
* character representations (if printable).
|
|
*/
|
|
Dump_buf(buf, len)
|
|
caddr_t buf;
|
|
int len;
|
|
{
|
|
int i,j;
|
|
#define Buf ((u_char *)buf)
|
|
printf("Dump buf 0x%x len 0x%x\n", buf, len);
|
|
for (i = 0; i < len; i += MAX_COLUMNS) {
|
|
printf("+%d:\t", i);
|
|
for (j = 0; j < MAX_COLUMNS; j++) {
|
|
if (i + j < len) {
|
|
printf("%x/%d\t", Buf[i+j], Buf[i+j]);
|
|
} else {
|
|
printf(" ");
|
|
}
|
|
}
|
|
|
|
for (j = 0; j < MAX_COLUMNS; j++) {
|
|
if (i + j < len) {
|
|
if (((Buf[i+j]) > 31) && ((Buf[i+j]) < 128))
|
|
printf("%c", Buf[i+j]);
|
|
else
|
|
printf(".");
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif /* ARGO_DEBUG */
|