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- /*-
- * 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.
- *
- * @(#)tp_subr2.c 7.10 (Berkeley) 6/27/91
- */
-
- /***********************************************************
- Copyright IBM Corporation 1987
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the name of IBM not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
- ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
- ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- SOFTWARE.
-
- ******************************************************************/
-
- /*
- * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
- */
- /*
- * ARGO TP
- *
- * $Header: tp_subr2.c,v 5.5 88/11/18 17:28:55 nhall Exp $
- * $Source: /usr/argo/sys/netiso/RCS/tp_subr2.c,v $
- *
- * Some auxiliary routines:
- * tp_protocol_error: required by xebec- called when a combo of state,
- * event, predicate isn't covered for by the transition file.
- * tp_indicate: gives indications(signals) to the user process
- * tp_getoptions: initializes variables that are affected by the options
- * chosen.
- */
-
- /* this def'n is to cause the expansion of this macro in the
- * routine tp_local_credit :
- */
- #define LOCAL_CREDIT_EXPAND
-
- #include "param.h"
- #include "systm.h"
- #include "mbuf.h"
- #include "socket.h"
- #include "socketvar.h"
- #include "domain.h"
- #include "protosw.h"
- #include "errno.h"
- #include "types.h"
- #include "time.h"
- #include "kernel.h"
- #undef MNULL
- #include "argo_debug.h"
- #include "tp_param.h"
- #include "tp_ip.h"
- #include "iso.h"
- #include "iso_errno.h"
- #include "iso_pcb.h"
- #include "tp_timer.h"
- #include "tp_stat.h"
- #include "tp_tpdu.h"
- #include "tp_pcb.h"
- #include "tp_seq.h"
- #include "tp_trace.h"
- #include "tp_user.h"
- #include "cons.h"
-
- #include "../net/if.h"
- #ifdef TRUE
- #undef FALSE
- #undef TRUE
- #endif
- #include "../netccitt/x25.h"
- #include "../netccitt/pk.h"
- #include "../netccitt/pk_var.h"
-
- /*
- * NAME: tp_local_credit()
- *
- * CALLED FROM:
- * tp_emit(), tp_usrreq()
- *
- * FUNCTION and ARGUMENTS:
- * Computes the local credit and stashes it in tpcb->tp_lcredit.
- * It's a macro in the production system rather than a procdure.
- *
- * RETURNS:
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- * This doesn't actually get called in a production system -
- * the macro gets expanded instead in place of calls to this proc.
- * But for debugging, we call this and that allows us to add
- * debugging messages easily here.
- */
- void
- tp_local_credit(tpcb)
- struct tp_pcb *tpcb;
- {
- LOCAL_CREDIT(tpcb);
- IFDEBUG(D_CREDIT)
- printf("ref 0x%x lcdt 0x%x l_tpdusize 0x%x decbit 0x%x\n",
- tpcb->tp_refp - tp_ref,
- tpcb->tp_lcredit,
- tpcb->tp_l_tpdusize,
- tpcb->tp_decbit,
- tpcb->tp_cong_win
- );
- ENDDEBUG
- IFTRACE(D_CREDIT)
- tptraceTPCB(TPPTmisc,
- "lcdt tpdusz \n",
- tpcb->tp_lcredit, tpcb->tp_l_tpdusize, 0, 0);
- ENDTRACE
- }
-
- /*
- * NAME: tp_protocol_error()
- *
- * CALLED FROM:
- * tp_driver(), when it doesn't know what to do with
- * a combo of event, state, predicate
- *
- * FUNCTION and ARGUMENTS:
- * print error mesg
- *
- * RETURN VALUE:
- * EIO - always
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- */
- int
- tp_protocol_error(e,tpcb)
- struct tp_event *e;
- struct tp_pcb *tpcb;
- {
- printf("TP PROTOCOL ERROR! tpcb 0x%x event 0x%x, state 0x%x\n",
- tpcb, e->ev_number, tpcb->tp_state);
- IFTRACE(D_DRIVER)
- tptraceTPCB(TPPTmisc, "PROTOCOL ERROR tpcb event state",
- tpcb, e->ev_number, tpcb->tp_state, 0 );
- ENDTRACE
- return EIO; /* for lack of anything better */
- }
-
-
- /* Not used at the moment */
- ProtoHook
- tp_drain()
- {
- return 0;
- }
-
-
- /*
- * NAME: tp_indicate()
- *
- * CALLED FROM:
- * tp.trans when XPD arrive, when a connection is being disconnected by
- * the arrival of a DR or ER, and when a connection times out.
- *
- * FUNCTION and ARGUMENTS:
- * (ind) is the type of indication : T_DISCONNECT, T_XPD
- * (error) is an E* value that will be put in the socket structure
- * to be passed along to the user later.
- * Gives a SIGURG to the user process or group indicated by the socket
- * attached to the tpcb.
- *
- * RETURNS: Rien
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- */
- void
- tp_indicate(ind, tpcb, error)
- int ind;
- u_short error;
- register struct tp_pcb *tpcb;
- {
- register struct socket *so = tpcb->tp_sock;
- IFTRACE(D_INDICATION)
- tptraceTPCB(TPPTindicate, ind, *(u_short *)(tpcb->tp_lsuffix),
- *(u_short *)(tpcb->tp_fsuffix), error,so->so_pgid);
- ENDTRACE
- IFDEBUG(D_INDICATION)
- char *ls, *fs;
- ls = tpcb->tp_lsuffix,
- fs = tpcb->tp_fsuffix,
-
- printf(
- "indicate 0x%x lsuf 0x%02x%02x fsuf 0x%02x%02x err 0x%x noind 0x%x ref 0x%x\n",
- ind,
- *ls, *(ls+1), *fs, *(fs+1),
- error, /*so->so_pgrp,*/
- tpcb->tp_no_disc_indications,
- tpcb->tp_lref);
- ENDDEBUG
-
- if (ind == ER_TPDU) {
- register struct mbuf *m;
- struct tp_disc_reason x;
-
- if ((so->so_state & SS_CANTRCVMORE) == 0 &&
- (m = m_get(M_DONTWAIT, MT_OOBDATA)) != 0) {
-
- x.dr_hdr.cmsg_len = m->m_len = sizeof(x);
- x.dr_hdr.cmsg_level = SOL_TRANSPORT;
- x.dr_hdr.cmsg_type= TPOPT_DISC_REASON;
- x.dr_reason = error;
- *mtod(m, struct tp_disc_reason *) = x;
- sbappendrecord(&tpcb->tp_Xrcv, m);
- error = 0;
- } else
- error = ECONNRESET;
- }
- so->so_error = error;
-
- if (ind == T_DISCONNECT) {
- so->so_error = ENOTCONN;
- if ( tpcb->tp_no_disc_indications )
- return;
- }
- IFTRACE(D_INDICATION)
- tptraceTPCB(TPPTmisc, "doing sohasoutofband(so)", so,0,0,0);
- ENDTRACE
- sohasoutofband(so);
- }
-
- /*
- * NAME : tp_getoptions()
- *
- * CALLED FROM:
- * tp.trans whenever we go into OPEN state
- *
- * FUNCTION and ARGUMENTS:
- * sets the proper flags and values in the tpcb, to control
- * the appropriate actions for the given class, options,
- * sequence space, etc, etc.
- *
- * RETURNS: Nada
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- */
- void
- tp_getoptions(tpcb)
- struct tp_pcb *tpcb;
- {
- tpcb->tp_seqmask =
- tpcb->tp_xtd_format ? TP_XTD_FMT_MASK : TP_NML_FMT_MASK ;
- tpcb->tp_seqbit =
- tpcb->tp_xtd_format ? TP_XTD_FMT_BIT : TP_NML_FMT_BIT ;
- tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1;
- tpcb->tp_dt_ticks =
- MAX(tpcb->tp_dt_ticks, (tpcb->tp_peer_acktime + 2));
-
- }
-
- /*
- * NAME: tp_recycle_tsuffix()
- *
- * CALLED FROM:
- * Called when a ref is frozen.
- *
- * FUNCTION and ARGUMENTS:
- * allows the suffix to be reused.
- *
- * RETURNS: zilch
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- */
- void
- tp_recycle_tsuffix(tpcb)
- struct tp_pcb *tpcb;
- {
- bzero((caddr_t)tpcb->tp_lsuffix, sizeof( tpcb->tp_lsuffix));
- bzero((caddr_t)tpcb->tp_fsuffix, sizeof( tpcb->tp_fsuffix));
- tpcb->tp_fsuffixlen = tpcb->tp_lsuffixlen = 0;
-
- (tpcb->tp_nlproto->nlp_recycle_suffix)(tpcb->tp_npcb);
- }
-
- /*
- * NAME: tp_quench()
- *
- * CALLED FROM:
- * tp{af}_quench() when ICMP source quench or similar thing arrives.
- *
- * FUNCTION and ARGUMENTS:
- * Drop the congestion window back to 1.
- * Congestion window scheme:
- * Initial value is 1. ("slow start" as Nagle, et. al. call it)
- * For each good ack that arrives, the congestion window is increased
- * by 1 (up to max size of logical infinity, which is to say,
- * it doesn't wrap around).
- * Source quench causes it to drop back to 1.
- * tp_send() uses the smaller of (regular window, congestion window).
- * One retransmission strategy option is to have any retransmission
- * cause reset the congestion window back to 1.
- *
- * (cmd) is either PRC_QUENCH: source quench, or
- * PRC_QUENCH2: dest. quench (dec bit)
- *
- * RETURNS:
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- */
- void
- tp_quench( tpcb, cmd )
- struct tp_pcb *tpcb;
- int cmd;
- {
- IFDEBUG(D_QUENCH)
- printf("tp_quench tpcb 0x%x ref 0x%x sufx 0x%x\n",
- tpcb, tpcb->tp_lref, *(u_short *)(tpcb->tp_lsuffix));
- printf("cong_win 0x%x decbit 0x%x \n",
- tpcb->tp_cong_win, tpcb->tp_decbit);
- ENDDEBUG
- switch(cmd) {
- case PRC_QUENCH:
- tpcb->tp_cong_win = 1;
- IncStat(ts_quench);
- break;
- case PRC_QUENCH2:
- tpcb->tp_cong_win = 1; /* might as well quench source also */
- tpcb->tp_decbit = TP_DECBIT_CLEAR_COUNT;
- IncStat(ts_rcvdecbit);
- break;
- }
- }
-
-
- /*
- * NAME: tp_netcmd()
- *
- * CALLED FROM:
- *
- * FUNCTION and ARGUMENTS:
- *
- * RETURNS:
- *
- * SIDE EFFECTS:
- *
- * NOTES:
- */
- tp_netcmd( tpcb, cmd )
- struct tp_pcb *tpcb;
- int cmd;
- {
- #ifdef TPCONS
- struct isopcb *isop;
- struct pklcd *lcp;
-
- if (tpcb->tp_netservice != ISO_CONS)
- return;
- isop = (struct isopcb *)tpcb->tp_npcb;
- lcp = (struct pklcd *)isop->isop_chan;
- switch (cmd) {
-
- case CONN_CLOSE:
- case CONN_REFUSE:
- if (isop->isop_refcnt == 1)
- pk_disconnect(lcp);
- isop->isop_chan = 0;
- isop->isop_refcnt = 0;
- break;
-
- default:
- printf("tp_netcmd(0x%x, 0x%x) NOT IMPLEMENTED\n", tpcb, cmd);
- break;
- }
- #else TPCONS
- printf("tp_netcmd(): X25 NOT CONFIGURED!!\n");
- #endif
- }
- /*
- * CALLED FROM:
- * tp_ctloutput() and tp_emit()
- * FUNCTION and ARGUMENTS:
- * Convert a class mask to the highest numeric value it represents.
- */
-
- int
- tp_mask_to_num(x)
- u_char x;
- {
- register int j;
-
- for(j = 4; j>=0 ;j--) {
- if(x & (1<<j))
- break;
- }
- ASSERT( (j == 4) || (j == 0) ); /* for now */
- if( (j != 4) && (j != 0) ) {
- printf("ASSERTION ERROR: tp_mask_to_num: x 0x%x j %d\n",
- x, j);
- }
- IFTRACE(D_TPINPUT)
- tptrace(TPPTmisc, "tp_mask_to_num(x) returns j", x, j, 0, 0);
- ENDTRACE
- IFDEBUG(D_TPINPUT)
- printf("tp_mask_to_num(0x%x) returns 0x%x\n", x, j);
- ENDDEBUG
- return j;
- }
-
- static
- copyQOSparms(src, dst)
- struct tp_conn_param *src, *dst;
- {
- /* copy all but the bits stuff at the end */
- #define COPYSIZE (12 * sizeof(short))
-
- bcopy((caddr_t)src, (caddr_t)dst, COPYSIZE);
- dst->p_tpdusize = src->p_tpdusize;
- dst->p_ack_strat = src->p_ack_strat;
- dst->p_rx_strat = src->p_rx_strat;
- #undef COPYSIZE
- }
-
- /*
- * CALLED FROM:
- * tp_usrreq on PRU_CONNECT and tp_input on receipt of CR
- *
- * FUNCTION and ARGUMENTS:
- * route directly to x.25 if the address is type 37 - GROT.
- * furthermore, let TP0 handle only type-37 addresses
- *
- * Since this assumes that its address argument is in a mbuf, the
- * parameter was changed to reflect this assumtion. This also
- * implies that an mbuf must be allocated when this is
- * called from tp_input
- *
- * 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()
- * NOTE:
- * Would like to eliminate as much of this as possible --
- * only one set of defaults (let the user set the parms according
- * to parameters provided in the directory service).
- * Left here for now 'cause we don't yet have a clean way to handle
- * it on the passive end.
- */
- 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[];
- struct pklcd *lcp = (struct pklcd *)channel;
- int error = 0;
-
- 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 (siso->siso_family != tpcb->tp_domain) {
- error = EAFNOSUPPORT;
- goto done;
- }
- IFDEBUG(D_CONN)
- printf("tp_route_to calling nlp_pcbconn, netserv %d\n",
- tpcb->tp_netservice);
- ENDDEBUG
- #ifdef TPCONS
- if (lcp) {
- struct isopcb *isop = (struct isopcb *)lcp->lcd_upnext,
- *isop_new = (struct isopcb *)tpcb->tp_sock->so_pcb;
- remque(isop_new);
- free(isop_new, M_PCB);
- tpcb->tp_sock->so_pcb = (caddr_t)isop;
- if (isop->isop_refcnt == 0) {
- extern struct isopcb tp_isopcb;
- remque(isop);
- insque(isop, &tp_isopcb);
- isop->isop_head = &tp_isopcb;
- iso_putsufx(isop, tpcb->tp_lsuffix, tpcb->tp_lsuffixlen, TP_LOCAL);
- }
- /* else there are already connections sharing this */
- isop->isop_refcnt++;
- } else
- #endif
- error = (tpcb->tp_nlproto->nlp_pcbconn)(tpcb->tp_sock->so_pcb, m);
- if( error )
- goto done;
-
- {
- register int save_netservice = tpcb->tp_netservice;
-
- switch(tpcb->tp_netservice) {
- case ISO_COSNS:
- case ISO_CLNS:
- /* This is a kludge but seems necessary so the passive end
- * can get long enough timers. sigh.
- if( siso->siso_addr.osinet_idi[1] == (u_char)IDI_OSINET )
- */
- #define IDI_OSINET 0x0004 /* bcd of "0004" */
- if( siso->siso_addr.isoa_genaddr[2] == (char)IDI_OSINET ) {
- if( tpcb->tp_dont_change_params == 0) {
- copyQOSparms( &tp_conn_param[ISO_COSNS],
- &tpcb->_tp_param);
- }
- tpcb->tp_flags |= TPF_NLQOS_PDN;
- }
- /* drop through to IN_CLNS*/
- case IN_CLNS:
- if (iso_localifa(siso))
- tpcb->tp_flags |= TPF_PEER_ON_SAMENET;
- if( (tpcb->tp_class & TP_CLASS_4)==0 ) {
- error = EPROTOTYPE;
- break;
- }
- tpcb->tp_class = TP_CLASS_4; /* IGNORE dont_change_parms */
- break;
-
- case ISO_CONS:
- #ifdef TPCONS
- tpcb->tp_flags |= TPF_NLQOS_PDN;
- if( tpcb->tp_dont_change_params == 0 ) {
- copyQOSparms( &tp_conn_param[ISO_CONS],
- &tpcb->_tp_param);
- }
- /*
- * for use over x.25 really need a small receive window,
- * need to start slowly, need small max negotiable tpdu size,
- * and need to use the congestion window to the max
- * IGNORES tp_dont_change_params for these!
- */
- if( tpcb->tp_sock->so_snd.sb_hiwat > 512 ) {
- (void) soreserve(tpcb->tp_sock, 512, 512 );/* GAG */
- }
- tpcb->tp_rx_strat = TPRX_USE_CW;
-
- if( (tpcb->tp_nlproto != &nl_protosw[ISO_CONS]) ) {
- IFDEBUG(D_CONN)
- printf(
- "tp_route_to( CHANGING nlproto old 0x%x new 0x%x)\n",
- tpcb->tp_nlproto , &nl_protosw[ISO_CONS]);
- ENDDEBUG
- tpcb->tp_nlproto = &nl_protosw[ISO_CONS];
- }
- /* class 4 doesn't need to open a vc now - may use one already
- * opened or may open one only when it sends a pkt.
- */
- #else TPCONS
- error = ECONNREFUSED;
- #endif TPCONS
- break;
- default:
- error = EPROTOTYPE;
- }
-
- ASSERT( save_netservice == tpcb->tp_netservice);
- }
- if (error) {
- tp_netcmd( tpcb, CONN_CLOSE);
- goto done;
- }
- { /* start with the global rtt, rtv stats */
- register int i =
- (int) tpcb->tp_flags & (TPF_PEER_ON_SAMENET | TPF_NLQOS_PDN);
-
- tpcb->tp_rtt = tp_stat.ts_rtt[i];
- tpcb->tp_rtv = tp_stat.ts_rtv[i];
- }
- 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
-
-