871 lines
23 KiB
C
871 lines
23 KiB
C
/*-
|
|
* Copyright (c) 1991 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)tp_pcb.c 7.11 (Berkeley) 5/6/91
|
|
* $Id: tp_pcb.c,v 1.3 1993/12/18 00:43:53 mycroft Exp $
|
|
*/
|
|
|
|
/***********************************************************
|
|
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
|
|
*
|
|
* This is the initialization and cleanup stuff -
|
|
* for the tp machine in general as well as for the individual pcbs.
|
|
* tp_init() is called at system startup. tp_attach() and tp_getref() are
|
|
* called when a socket is created. tp_detach() and tp_freeref()
|
|
* are called during the closing stage and/or when the reference timer
|
|
* goes off.
|
|
* tp_soisdisconnecting() and tp_soisdisconnected() are tp-specific
|
|
* versions of soisconnect*
|
|
* and are called (obviously) during the closing phase.
|
|
*
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <netiso/argo_debug.h>
|
|
#include <netiso/tp_param.h>
|
|
#include <netiso/tp_timer.h>
|
|
#include <netiso/tp_ip.h>
|
|
#include <netiso/tp_stat.h>
|
|
#include <netiso/tp_pcb.h>
|
|
#include <netiso/tp_tpdu.h>
|
|
#include <netiso/tp_trace.h>
|
|
#include <netiso/tp_meas.h>
|
|
#include <netiso/tp_seq.h>
|
|
#include <netiso/tp_clnp.h>
|
|
|
|
struct tp_param tp_param = {
|
|
1, /* configured */
|
|
};
|
|
|
|
/* ticks are in units of:
|
|
* 500 nano-fortnights ;-) or
|
|
* 500 ms or
|
|
* 1/2 second
|
|
*/
|
|
|
|
struct tp_conn_param tp_conn_param[] = {
|
|
/* ISO_CLNS: TP4 CONNECTION LESS */
|
|
{
|
|
TP_NRETRANS, /* short p_Nretrans; */
|
|
20, /* 10 sec */ /* short p_dr_ticks; */
|
|
|
|
20, /* 10 sec */ /* short p_cc_ticks; */
|
|
20, /* 10 sec */ /* short p_dt_ticks; */
|
|
|
|
40, /* 20 sec */ /* short p_x_ticks; */
|
|
80, /* 40 sec */ /* short p_cr_ticks;*/
|
|
|
|
240, /* 2 min */ /* short p_keepalive_ticks;*/
|
|
10, /* 5 sec */ /* short p_sendack_ticks; */
|
|
|
|
600, /* 5 min */ /* short p_ref_ticks; */
|
|
360, /* 3 min */ /* short p_inact_ticks; */
|
|
|
|
(short) 100, /* short p_lcdtfract */
|
|
(short) TP_SOCKBUFSIZE, /* short p_winsize */
|
|
TP_TPDUSIZE, /* u_char p_tpdusize */
|
|
|
|
TPACK_WINDOW, /* 4 bits p_ack_strat */
|
|
TPRX_USE_CW | TPRX_FASTSTART,
|
|
/* 4 bits p_rx_strat*/
|
|
TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */
|
|
1, /* 1 bit xtd format */
|
|
1, /* 1 bit xpd service */
|
|
1, /* 1 bit use_checksum */
|
|
0, /* 1 bit use net xpd */
|
|
0, /* 1 bit use rcc */
|
|
0, /* 1 bit use efc */
|
|
1, /* no disc indications */
|
|
0, /* don't change params */
|
|
ISO_CLNS, /* p_netservice */
|
|
},
|
|
/* IN_CLNS: TP4 CONNECTION LESS */
|
|
{
|
|
TP_NRETRANS, /* short p_Nretrans; */
|
|
20, /* 10 sec */ /* short p_dr_ticks; */
|
|
|
|
20, /* 10 sec */ /* short p_cc_ticks; */
|
|
20, /* 10 sec */ /* short p_dt_ticks; */
|
|
|
|
40, /* 20 sec */ /* short p_x_ticks; */
|
|
80, /* 40 sec */ /* short p_cr_ticks;*/
|
|
|
|
240, /* 2 min */ /* short p_keepalive_ticks;*/
|
|
10, /* 5 sec */ /* short p_sendack_ticks; */
|
|
|
|
600, /* 5 min */ /* short p_ref_ticks; */
|
|
360, /* 3 min */ /* short p_inact_ticks; */
|
|
|
|
(short) 100, /* short p_lcdtfract */
|
|
(short) TP_SOCKBUFSIZE, /* short p_winsize */
|
|
TP_TPDUSIZE, /* u_char p_tpdusize */
|
|
|
|
TPACK_WINDOW, /* 4 bits p_ack_strat */
|
|
TPRX_USE_CW | TPRX_FASTSTART,
|
|
/* 4 bits p_rx_strat*/
|
|
TP_CLASS_4, /* 5 bits p_class */
|
|
1, /* 1 bit xtd format */
|
|
1, /* 1 bit xpd service */
|
|
1, /* 1 bit use_checksum */
|
|
0, /* 1 bit use net xpd */
|
|
0, /* 1 bit use rcc */
|
|
0, /* 1 bit use efc */
|
|
1, /* no disc indications */
|
|
0, /* don't change params */
|
|
IN_CLNS, /* p_netservice */
|
|
},
|
|
/* ISO_CONS: TP0 CONNECTION MODE */
|
|
{
|
|
TP_NRETRANS, /* short p_Nretrans; */
|
|
0, /* n/a */ /* short p_dr_ticks; */
|
|
|
|
40, /* 20 sec */ /* short p_cc_ticks; */
|
|
0, /* n/a */ /* short p_dt_ticks; */
|
|
|
|
0, /* n/a */ /* short p_x_ticks; */
|
|
360, /* 3 min */ /* short p_cr_ticks;*/
|
|
|
|
0, /* n/a */ /* short p_keepalive_ticks;*/
|
|
0, /* n/a */ /* short p_sendack_ticks; */
|
|
|
|
600, /* for cr/cc to clear *//* short p_ref_ticks; */
|
|
0, /* n/a */ /* short p_inact_ticks; */
|
|
|
|
/* Use tp4 defaults just in case the user changes ONLY
|
|
* the class
|
|
*/
|
|
(short) 100, /* short p_lcdtfract */
|
|
(short) TP0_SOCKBUFSIZE, /* short p_winsize */
|
|
TP0_TPDUSIZE, /* 8 bits p_tpdusize */
|
|
|
|
0, /* 4 bits p_ack_strat */
|
|
0, /* 4 bits p_rx_strat*/
|
|
TP_CLASS_0, /* 5 bits p_class */
|
|
0, /* 1 bit xtd format */
|
|
0, /* 1 bit xpd service */
|
|
0, /* 1 bit use_checksum */
|
|
0, /* 1 bit use net xpd */
|
|
0, /* 1 bit use rcc */
|
|
0, /* 1 bit use efc */
|
|
0, /* no disc indications */
|
|
0, /* don't change params */
|
|
ISO_CONS, /* p_netservice */
|
|
},
|
|
/* ISO_COSNS: TP4 CONNECTION LESS SERVICE over CONSNS */
|
|
{
|
|
TP_NRETRANS, /* short p_Nretrans; */
|
|
40, /* 20 sec */ /* short p_dr_ticks; */
|
|
|
|
40, /* 20 sec */ /* short p_cc_ticks; */
|
|
80, /* 40 sec */ /* short p_dt_ticks; */
|
|
|
|
120, /* 1 min */ /* short p_x_ticks; */
|
|
360, /* 3 min */ /* short p_cr_ticks;*/
|
|
|
|
360, /* 3 min */ /* short p_keepalive_ticks;*/
|
|
20, /* 10 sec */ /* short p_sendack_ticks; */
|
|
|
|
600, /* 5 min */ /* short p_ref_ticks; */
|
|
480, /* 4 min */ /* short p_inact_ticks; */
|
|
|
|
(short) 100, /* short p_lcdtfract */
|
|
(short) TP0_SOCKBUFSIZE, /* short p_winsize */
|
|
TP0_TPDUSIZE, /* u_char p_tpdusize */
|
|
|
|
TPACK_WINDOW, /* 4 bits p_ack_strat */
|
|
TPRX_USE_CW , /* No fast start */
|
|
/* 4 bits p_rx_strat*/
|
|
TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */
|
|
0, /* 1 bit xtd format */
|
|
1, /* 1 bit xpd service */
|
|
1, /* 1 bit use_checksum */
|
|
0, /* 1 bit use net xpd */
|
|
0, /* 1 bit use rcc */
|
|
0, /* 1 bit use efc */
|
|
0, /* no disc indications */
|
|
0, /* don't change params */
|
|
ISO_COSNS, /* p_netservice */
|
|
},
|
|
};
|
|
|
|
#ifdef INET
|
|
int in_putnetaddr();
|
|
int in_getnetaddr();
|
|
int in_cmpnetaddr();
|
|
int in_putsufx();
|
|
int in_getsufx();
|
|
int in_recycle_tsuffix();
|
|
int tpip_mtu();
|
|
int in_pcbbind();
|
|
int in_pcbconnect();
|
|
int in_pcbdisconnect();
|
|
int in_pcbdetach();
|
|
int in_pcballoc();
|
|
int tpip_output();
|
|
int tpip_output_dg();
|
|
struct inpcb tp_inpcb;
|
|
#endif INET
|
|
#ifdef ISO
|
|
int iso_putnetaddr();
|
|
int iso_getnetaddr();
|
|
int iso_cmpnetaddr();
|
|
int iso_putsufx();
|
|
int iso_getsufx();
|
|
int iso_recycle_tsuffix();
|
|
int tpclnp_mtu();
|
|
int iso_pcbbind();
|
|
int iso_pcbconnect();
|
|
int iso_pcbdisconnect();
|
|
int iso_pcbdetach();
|
|
int iso_pcballoc();
|
|
int tpclnp_output();
|
|
int tpclnp_output_dg();
|
|
int iso_nlctloutput();
|
|
struct isopcb tp_isopcb;
|
|
#endif ISO
|
|
#ifdef TPCONS
|
|
int iso_putnetaddr();
|
|
int iso_getnetaddr();
|
|
int iso_cmpnetaddr();
|
|
int iso_putsufx();
|
|
int iso_getsufx();
|
|
int iso_recycle_tsuffix();
|
|
int iso_pcbbind();
|
|
int tpcons_pcbconnect();
|
|
int tpclnp_mtu();
|
|
int iso_pcbdisconnect();
|
|
int iso_pcbdetach();
|
|
int iso_pcballoc();
|
|
int tpcons_output();
|
|
struct isopcb tp_isopcb;
|
|
#endif TPCONS
|
|
|
|
|
|
struct nl_protosw nl_protosw[] = {
|
|
/* ISO_CLNS */
|
|
#ifdef ISO
|
|
{ AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr,
|
|
iso_putsufx, iso_getsufx,
|
|
iso_recycle_tsuffix,
|
|
tpclnp_mtu, iso_pcbbind, iso_pcbconnect,
|
|
iso_pcbdisconnect, iso_pcbdetach,
|
|
iso_pcballoc,
|
|
tpclnp_output, tpclnp_output_dg, iso_nlctloutput,
|
|
(caddr_t) &tp_isopcb,
|
|
},
|
|
#else
|
|
{ 0 },
|
|
#endif ISO
|
|
/* IN_CLNS */
|
|
#ifdef INET
|
|
{ AF_INET, in_putnetaddr, in_getnetaddr, in_cmpnetaddr,
|
|
in_putsufx, in_getsufx,
|
|
in_recycle_tsuffix,
|
|
tpip_mtu, in_pcbbind, in_pcbconnect,
|
|
in_pcbdisconnect, in_pcbdetach,
|
|
in_pcballoc,
|
|
tpip_output, tpip_output_dg, /* nl_ctloutput */ NULL,
|
|
(caddr_t) &tp_inpcb,
|
|
},
|
|
#else
|
|
{ 0 },
|
|
#endif INET
|
|
/* ISO_CONS */
|
|
#if defined(ISO) && defined(TPCONS)
|
|
{ AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr,
|
|
iso_putsufx, iso_getsufx,
|
|
iso_recycle_tsuffix,
|
|
tpclnp_mtu, iso_pcbbind, tpcons_pcbconnect,
|
|
iso_pcbdisconnect, iso_pcbdetach,
|
|
iso_pcballoc,
|
|
tpcons_output, tpcons_output, iso_nlctloutput,
|
|
(caddr_t) &tp_isopcb,
|
|
},
|
|
#else
|
|
{ 0 },
|
|
#endif ISO_CONS
|
|
/* End of protosw marker */
|
|
{ 0 }
|
|
};
|
|
|
|
/*
|
|
* NAME: tp_init()
|
|
*
|
|
* CALLED FROM:
|
|
* autoconf through the protosw structure
|
|
*
|
|
* FUNCTION:
|
|
* initialize tp machine
|
|
*
|
|
* RETURNS: Nada
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES:
|
|
*/
|
|
int
|
|
tp_init()
|
|
{
|
|
static int init_done=0;
|
|
void tp_timerinit();
|
|
|
|
if (init_done++)
|
|
return 0;
|
|
|
|
|
|
/* FOR INET */
|
|
tp_inpcb.inp_next = tp_inpcb.inp_prev = &tp_inpcb;
|
|
/* FOR ISO */
|
|
tp_isopcb.isop_next = tp_isopcb.isop_prev = &tp_isopcb;
|
|
|
|
tp_start_win = 2;
|
|
|
|
tp_timerinit();
|
|
bzero((caddr_t)&tp_stat, sizeof(struct tp_stat));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* NAME: tp_soisdisconnecting()
|
|
*
|
|
* CALLED FROM:
|
|
* tp.trans
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* Set state of the socket (so) to reflect that fact that we're disconnectING
|
|
*
|
|
* RETURNS: Nada
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES:
|
|
* This differs from the regular soisdisconnecting() in that the latter
|
|
* also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags.
|
|
* We don't want to set those flags because those flags will cause
|
|
* a SIGPIPE to be delivered in sosend() and we don't like that.
|
|
* If anyone else is sleeping on this socket, wake 'em up.
|
|
*/
|
|
void
|
|
tp_soisdisconnecting(so)
|
|
register struct socket *so;
|
|
{
|
|
soisdisconnecting(so);
|
|
so->so_state &= ~SS_CANTSENDMORE;
|
|
IFPERF(sototpcb(so))
|
|
register struct tp_pcb *tpcb = sototpcb(so);
|
|
u_int fsufx, lsufx;
|
|
|
|
bcopy ((caddr_t)tpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) );
|
|
bcopy ((caddr_t)tpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) );
|
|
|
|
tpmeas(tpcb->tp_lref, TPtime_close, &time, fsufx, lsufx, tpcb->tp_fref);
|
|
tpcb->tp_perf_on = 0; /* turn perf off */
|
|
ENDPERF
|
|
}
|
|
|
|
|
|
/*
|
|
* NAME: tp_soisdisconnected()
|
|
*
|
|
* CALLED FROM:
|
|
* tp.trans
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* Set state of the socket (so) to reflect that fact that we're disconnectED
|
|
* Set the state of the reference structure to closed, and
|
|
* recycle the suffix.
|
|
* Start a reference timer.
|
|
*
|
|
* RETURNS: Nada
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES:
|
|
* This differs from the regular soisdisconnected() in that the latter
|
|
* also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags.
|
|
* We don't want to set those flags because those flags will cause
|
|
* a SIGPIPE to be delivered in sosend() and we don't like that.
|
|
* If anyone else is sleeping on this socket, wake 'em up.
|
|
*/
|
|
void
|
|
tp_soisdisconnected(tpcb)
|
|
register struct tp_pcb *tpcb;
|
|
{
|
|
register struct socket *so = tpcb->tp_sock;
|
|
|
|
soisdisconnecting(so);
|
|
so->so_state &= ~SS_CANTSENDMORE;
|
|
IFPERF(sototpcb(so))
|
|
register struct tp_pcb *ttpcb = sototpcb(so);
|
|
u_int fsufx, lsufx;
|
|
|
|
/* CHOKE */
|
|
bcopy ((caddr_t)ttpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) );
|
|
bcopy ((caddr_t)ttpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) );
|
|
|
|
tpmeas(ttpcb->tp_lref, TPtime_close,
|
|
&time, &lsufx, &fsufx, ttpcb->tp_fref);
|
|
tpcb->tp_perf_on = 0; /* turn perf off */
|
|
ENDPERF
|
|
|
|
tpcb->tp_refp->tpr_state = REF_FROZEN;
|
|
tp_recycle_tsuffix( tpcb );
|
|
tp_etimeout(tpcb->tp_refp, TM_reference, 0,0,0, (int)tpcb->tp_refer_ticks);
|
|
}
|
|
|
|
int tp_maxrefopen; /* highest reference # of the set of open tp connections */
|
|
|
|
/*
|
|
* NAME: tp_freeref()
|
|
*
|
|
* CALLED FROM:
|
|
* tp.trans when the reference timer goes off, and
|
|
* from tp_attach() and tp_detach() when a tpcb is partially set up but not
|
|
* set up enough to have a ref timer set for it, and it's discarded
|
|
* due to some sort of error or an early close()
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* Frees the reference represented by (r) for re-use.
|
|
*
|
|
* RETURNS: Nothing
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES: better be called at clock priority !!!!!
|
|
*/
|
|
void
|
|
tp_freeref(r)
|
|
register struct tp_ref *r;
|
|
{
|
|
IFDEBUG(D_TIMER)
|
|
printf("tp_freeref called for ref %d maxrefopen %d\n",
|
|
r - tp_ref, tp_maxrefopen);
|
|
ENDDEBUG
|
|
IFTRACE(D_TIMER)
|
|
tptrace(TPPTmisc, "tp_freeref ref tp_maxrefopen",
|
|
r - tp_ref, tp_maxrefopen, 0, 0);
|
|
ENDTRACE
|
|
r->tpr_state = REF_FREE;
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_freeref: CLEARING tpr_pcb 0x%x\n", r->tpr_pcb);
|
|
ENDDEBUG
|
|
r->tpr_pcb = (struct tp_pcb *)0;
|
|
|
|
r = &tp_ref[tp_maxrefopen];
|
|
|
|
while( tp_maxrefopen > 0 ) {
|
|
if(r->tpr_state )
|
|
break;
|
|
tp_maxrefopen--;
|
|
r--;
|
|
}
|
|
IFDEBUG(D_TIMER)
|
|
printf("tp_freeref ends w/ maxrefopen %d\n", tp_maxrefopen);
|
|
ENDDEBUG
|
|
}
|
|
|
|
/*
|
|
* NAME: tp_getref()
|
|
*
|
|
* CALLED FROM:
|
|
* tp_attach()
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* obtains the next free reference and allocates the appropriate
|
|
* ref structure, links that structure to (tpcb)
|
|
*
|
|
* RETURN VALUE:
|
|
* a reference number
|
|
* or TP_ENOREF
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES:
|
|
*/
|
|
static RefNum
|
|
tp_getref(tpcb)
|
|
register struct tp_pcb *tpcb;
|
|
{
|
|
register struct tp_ref *r = tp_ref; /* tp_ref[0] is never used */
|
|
register int i=1;
|
|
|
|
|
|
while ((++r)->tpr_state != REF_FREE) {
|
|
if (++i == N_TPREF)
|
|
return TP_ENOREF;
|
|
}
|
|
r->tpr_state = REF_OPENING;
|
|
if (tp_maxrefopen < i)
|
|
tp_maxrefopen = i;
|
|
r->tpr_pcb = tpcb;
|
|
tpcb->tp_refp = r;
|
|
|
|
return i;
|
|
}
|
|
|
|
/*
|
|
* NAME: tp_attach()
|
|
*
|
|
* CALLED FROM:
|
|
* tp_usrreq, PRU_ATTACH
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* given a socket (so) and a protocol family (dom), allocate a tpcb
|
|
* and ref structure, initialize everything in the structures that
|
|
* needs to be initialized.
|
|
*
|
|
* RETURN VALUE:
|
|
* 0 ok
|
|
* EINVAL if DEBUG(X) in is on and a disaster has occurred
|
|
* ENOPROTOOPT if TP hasn't been configured or if the
|
|
* socket wasn't created with tp as its protocol
|
|
* EISCONN if this socket is already part of a connection
|
|
* ETOOMANYREFS if ran out of tp reference numbers.
|
|
* E* whatever error is returned from soreserve()
|
|
* for from the network-layer pcb allocation routine
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES:
|
|
*/
|
|
tp_attach(so, dom)
|
|
struct socket *so;
|
|
int dom;
|
|
{
|
|
register struct tp_pcb *tpcb;
|
|
int error;
|
|
int protocol = so->so_proto->pr_protocol;
|
|
extern struct tp_conn_param tp_conn_param[];
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_attach:dom 0x%x so 0x%x ", dom, so);
|
|
ENDDEBUG
|
|
IFTRACE(D_CONN)
|
|
tptrace(TPPTmisc, "tp_attach:dom so", dom, so, 0, 0);
|
|
ENDTRACE
|
|
if ( ! tp_param.tpp_configed ) {
|
|
error = ENOPROTOOPT; /* protocol not available */
|
|
goto bad2;
|
|
}
|
|
|
|
if (so->so_pcb != NULL) {
|
|
return EISCONN; /* socket already part of a connection*/
|
|
}
|
|
|
|
error = soreserve(so, TP_SOCKBUFSIZE, TP_SOCKBUFSIZE);
|
|
/* later an ioctl will allow reallocation IF still in closed state */
|
|
|
|
if (error)
|
|
goto bad2;
|
|
|
|
MALLOC(tpcb, struct tp_pcb *, sizeof(*tpcb), M_PCB, M_NOWAIT);
|
|
if (tpcb == NULL) {
|
|
error = ENOBUFS;
|
|
goto bad2;
|
|
}
|
|
bzero( (caddr_t)tpcb, sizeof (struct tp_pcb) );
|
|
|
|
if ( ((tpcb->tp_lref = tp_getref(tpcb)) & TP_ENOREF) != 0 ) {
|
|
error = ETOOMANYREFS;
|
|
goto bad3;
|
|
}
|
|
tpcb->tp_sock = so;
|
|
tpcb->tp_domain = dom;
|
|
if (protocol<ISOPROTO_TP4) {
|
|
tpcb->tp_netservice = ISO_CONS;
|
|
tpcb->tp_snduna = (SeqNum) -1;/* kludge so the pseudo-ack from the CR/CC
|
|
* will generate correct fake-ack values
|
|
*/
|
|
} else {
|
|
tpcb->tp_netservice = (dom== AF_INET)?IN_CLNS:ISO_CLNS;
|
|
/* the default */
|
|
}
|
|
tpcb->_tp_param = tp_conn_param[tpcb->tp_netservice];
|
|
|
|
tpcb->tp_cong_win = 1;
|
|
tpcb->tp_state = TP_CLOSED;
|
|
tpcb->tp_vers = TP_VERSION;
|
|
|
|
/* Spec says default is 128 octets,
|
|
* that is, if the tpdusize argument never appears, use 128.
|
|
* As the initiator, we will always "propose" the 2048
|
|
* size, that is, we will put this argument in the CR
|
|
* always, but accept what the other side sends on the CC.
|
|
* If the initiator sends us something larger on a CR,
|
|
* we'll respond w/ this.
|
|
* Our maximum is 4096. See tp_chksum.c comments.
|
|
*/
|
|
tpcb->tp_l_tpdusize = 1 << tpcb->tp_tpdusize;
|
|
|
|
tpcb->tp_seqmask = TP_NML_FMT_MASK;
|
|
tpcb->tp_seqbit = TP_NML_FMT_BIT;
|
|
tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1;
|
|
tpcb->tp_sndhiwat = (SeqNum) - 1; /* a kludge but it works */
|
|
tpcb->tp_s_subseq = 0;
|
|
|
|
/* attach to a network-layer protoswitch */
|
|
/* new way */
|
|
tpcb->tp_nlproto = & nl_protosw[tpcb->tp_netservice];
|
|
ASSERT( tpcb->tp_nlproto->nlp_afamily == tpcb->tp_domain);
|
|
#ifdef notdef
|
|
/* OLD WAY */
|
|
/* TODO: properly, this search would be on the basis of
|
|
* domain,netservice or just netservice only (if you have
|
|
* IN_CLNS, ISO_CLNS, and ISO_CONS)
|
|
*/
|
|
tpcb->tp_nlproto = nl_protosw;
|
|
while(tpcb->tp_nlproto->nlp_afamily != tpcb->tp_domain ) {
|
|
if( tpcb->tp_nlproto->nlp_afamily == 0 ) {
|
|
error = EAFNOSUPPORT;
|
|
goto bad4;
|
|
}
|
|
tpcb->tp_nlproto ++;
|
|
}
|
|
#endif notdef
|
|
|
|
/* xx_pcballoc sets so_pcb */
|
|
if ( error = (tpcb->tp_nlproto->nlp_pcballoc) (
|
|
so, tpcb->tp_nlproto->nlp_pcblist ) ) {
|
|
goto bad4;
|
|
}
|
|
|
|
if( dom == AF_INET )
|
|
sotoinpcb(so)->inp_ppcb = (caddr_t) tpcb;
|
|
/* nothing to do for iso case */
|
|
|
|
tpcb->tp_npcb = (caddr_t) so->so_pcb;
|
|
so->so_tpcb = (caddr_t) tpcb;
|
|
|
|
return 0;
|
|
|
|
bad4:
|
|
IFDEBUG(D_CONN)
|
|
printf("BAD4 in tp_attach, so 0x%x\n", so);
|
|
ENDDEBUG
|
|
tp_freeref(tpcb->tp_refp);
|
|
|
|
bad3:
|
|
IFDEBUG(D_CONN)
|
|
printf("BAD3 in tp_attach, so 0x%x\n", so);
|
|
ENDDEBUG
|
|
|
|
free((caddr_t)tpcb, M_PCB); /* never a cluster */
|
|
|
|
bad2:
|
|
IFDEBUG(D_CONN)
|
|
printf("BAD2 in tp_attach, so 0x%x\n", so);
|
|
ENDDEBUG
|
|
so->so_pcb = 0;
|
|
so->so_tpcb = 0;
|
|
|
|
/*bad:*/
|
|
IFDEBUG(D_CONN)
|
|
printf("BAD in tp_attach, so 0x%x\n", so);
|
|
ENDDEBUG
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* NAME: tp_detach()
|
|
*
|
|
* CALLED FROM:
|
|
* tp.trans, on behalf of a user close request
|
|
* and when the reference timer goes off
|
|
* (if the disconnect was initiated by the protocol entity
|
|
* rather than by the user)
|
|
*
|
|
* FUNCTION and ARGUMENTS:
|
|
* remove the tpcb structure from the list of active or
|
|
* partially active connections, recycle all the mbufs
|
|
* associated with the pcb, ref structure, sockbufs, etc.
|
|
* Only free the ref structure if you know that a ref timer
|
|
* wasn't set for this tpcb.
|
|
*
|
|
* RETURNS: Nada
|
|
*
|
|
* SIDE EFFECTS:
|
|
*
|
|
* NOTES:
|
|
* tp_soisdisconnected() was already when this is called
|
|
*/
|
|
void
|
|
tp_detach(tpcb)
|
|
register struct tp_pcb *tpcb;
|
|
{
|
|
void tp_freeref();
|
|
register struct socket *so = tpcb->tp_sock;
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_detach(tpcb 0x%x, so 0x%x)\n",
|
|
tpcb,so);
|
|
ENDDEBUG
|
|
IFTRACE(D_CONN)
|
|
tptraceTPCB(TPPTmisc, "tp_detach tpcb so lsufx",
|
|
tpcb, so, *(u_short *)(tpcb->tp_lsuffix), 0);
|
|
ENDTRACE
|
|
|
|
if (so->so_head) {
|
|
if (!soqremque(so, 0) && !soqremque(so, 1))
|
|
panic("sofree dq");
|
|
so->so_head = 0;
|
|
}
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf("tp_detach(freeing RTC list snduna 0x%x rcvnxt 0x%x)\n",
|
|
tpcb->tp_snduna_rtc,
|
|
tpcb->tp_rcvnxt_rtc);
|
|
ENDDEBUG
|
|
|
|
#define FREE_RTC_LIST(XXX)\
|
|
{ register struct tp_rtc *xxr = XXX, *xxs; while (xxr) {\
|
|
xxs = xxr->tprt_next;\
|
|
m_freem( xxr->tprt_data );\
|
|
m_free( dtom(xxr) ); xxr = xxs; }\
|
|
XXX = (struct tp_rtc *)0;\
|
|
}
|
|
|
|
FREE_RTC_LIST( tpcb->tp_snduna_rtc );
|
|
tpcb->tp_sndhiwat_rtc = (struct tp_rtc *)0;
|
|
|
|
FREE_RTC_LIST( tpcb->tp_rcvnxt_rtc );
|
|
|
|
#undef FREE_RTC_LIST
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf("so_snd at 0x%x so_rcv at 0x%x\n", &so->so_snd, &so->so_rcv);
|
|
dump_mbuf(so->so_snd.sb_mb, "so_snd at detach ");
|
|
printf("about to call LL detach, nlproto 0x%x, nl_detach 0x%x\n",
|
|
tpcb->tp_nlproto, tpcb->tp_nlproto->nlp_pcbdetach);
|
|
ENDDEBUG
|
|
|
|
if (so->so_snd.sb_cc != 0)
|
|
sbflush(&so->so_snd);
|
|
if (tpcb->tp_Xrcv.sb_cc != 0)
|
|
sbdrop(&tpcb->tp_Xrcv, (int)tpcb->tp_Xrcv.sb_cc);
|
|
if (tpcb->tp_ucddata)
|
|
m_freem(tpcb->tp_ucddata);
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf("calling (...nlproto->...)(0x%x, so 0x%x)\n",
|
|
so->so_pcb, so);
|
|
printf("so 0x%x so_head 0x%x, qlen %d q0len %d qlimit %d\n",
|
|
so, so->so_head,
|
|
so->so_q0len, so->so_qlen, so->so_qlimit);
|
|
ENDDEBUG
|
|
|
|
|
|
(tpcb->tp_nlproto->nlp_pcbdetach)(so->so_pcb);
|
|
/* does an sofree(so) */
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf("after xxx_pcbdetach\n");
|
|
ENDDEBUG
|
|
|
|
if( tpcb->tp_refp->tpr_state == REF_OPENING ) {
|
|
/* no connection existed here so no reference timer will be called */
|
|
IFDEBUG(D_CONN)
|
|
printf("SETTING ref %d, 0x%x to REF_FREE\n", tpcb->tp_lref,
|
|
tpcb->tp_refp - &tp_ref[0]);
|
|
ENDDEBUG
|
|
|
|
tp_freeref(tpcb->tp_refp);
|
|
}
|
|
|
|
if (tpcb->tp_Xsnd.sb_mb) {
|
|
printf("Unsent Xdata on detach; would panic");
|
|
sbflush(&tpcb->tp_Xsnd);
|
|
}
|
|
so->so_tpcb = (caddr_t)0;
|
|
|
|
/*
|
|
* Get rid of the cluster mbuf allocated for performance measurements, if
|
|
* there is one. Note that tpcb->tp_perf_on says nothing about whether or
|
|
* not a cluster mbuf was allocated, so you have to check for a pointer
|
|
* to one (that is, we need the TP_PERF_MEASs around the following section
|
|
* of code, not the IFPERFs)
|
|
*/
|
|
#ifdef TP_PERF_MEAS
|
|
if (tpcb->tp_p_mbuf) {
|
|
register struct mbuf *m = tpcb->tp_p_mbuf;
|
|
struct mbuf *n;
|
|
IFDEBUG(D_PERF_MEAS)
|
|
printf("freeing tp_p_meas 0x%x ", tpcb->tp_p_meas);
|
|
ENDDEBUG
|
|
do {
|
|
MFREE(m, n);
|
|
m = n;
|
|
} while (n);
|
|
tpcb->tp_p_meas = 0;
|
|
tpcb->tp_p_mbuf = 0;
|
|
}
|
|
#endif TP_PERF_MEAS
|
|
|
|
IFDEBUG(D_CONN)
|
|
printf( "end of detach, NOT single, tpcb 0x%x\n", tpcb);
|
|
ENDDEBUG
|
|
/* free((caddr_t)tpcb, M_PCB); WHere to put this ? */
|
|
}
|