[unix-history] / sys / netccitt / hd_subr.c

/*
 * Copyright (c) University of British Columbia, 1984
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Laboratory for Computation Vision and the Computer Science Department
 * of the University of British Columbia.
 *
 * 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: @(#)hd_subr.c	7.6 (Berkeley) 5/29/91
 *	$Id$
 */

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "domain.h"
#include "socket.h"
#include "protosw.h"
#include "errno.h"
#include "time.h"
#include "kernel.h"

#include "../net/if.h"

#include "hdlc.h"
#include "hd_var.h"
#include "x25.h"

hd_init ()
{

	hdintrq.ifq_maxlen = IFQ_MAXLEN;
}

hd_ctlinput (prc, addr)
struct sockaddr *addr;
{
	register struct x25config *xcp = (struct x25config *)addr;
	register struct hdcb *hdp;
	register struct ifaddr *ifa;
	struct ifnet *ifp;
	caddr_t pk_newlink();

	if (addr->sa_family != AF_CCITT)
		return (EAFNOSUPPORT);
	if (xcp->xc_lptype != HDLCPROTO_LAPB)
		return (EPROTONOSUPPORT);
	ifa = ifa_ifwithaddr(addr);
	if (ifa == 0 || ifa->ifa_addr->sa_family != AF_CCITT ||
	    (ifp = ifa->ifa_ifp) == 0)
		panic ("hd_ctlinput");
	for (hdp = hdcbhead; hdp; hdp = hdp->hd_next)
		if (hdp->hd_ifp == ifp)
			break;

	if (hdp == 0) {		/* new interface */
		int error, hd_ifoutput(), hd_output();

		/* an hdcb is now too big to fit in an mbuf */
		MALLOC(hdp, struct hdcb *, sizeof (*hdp), M_PCB, M_DONTWAIT);
		if (hdp == 0)
			return (ENOBUFS);
		bzero((caddr_t)hdp, sizeof(*hdp));
		hdp->hd_pkp =
			pk_newlink ((struct x25_ifaddr *)ifa, (caddr_t)hdp);
		if (hdp -> hd_pkp == 0) {
			free(hdp, M_PCB);
			return (ENOBUFS);
		}
		hdp->hd_ifp = ifp;
		hdp->hd_ifa = ifa;
		hdp->hd_xcp = xcp;
		hdp->hd_state = INIT;
		hdp->hd_output = hd_ifoutput;
		hdp->hd_next = hdcbhead;
		hdcbhead = hdp;
	}

	switch (prc) {
	case PRC_IFUP:
		if (xcp->xc_lwsize == 0 ||
			xcp->xc_lwsize > MAX_WINDOW_SIZE)
				xcp->xc_lwsize = MAX_WINDOW_SIZE;
		if (hdp->hd_state == INIT)
			SET_TIMER (hdp);
		break;

	case PRC_IFDOWN:
		if (hdp->hd_state == ABM)
			hd_message (hdp, "Operator shutdown: link closed");
		(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
		hd_writeinternal (hdp, DISC, POLLON);
		hdp->hd_state = DISC_SENT;
		SET_TIMER (hdp);
	}
	return (0);
}

hd_initvars (hdp)
register struct hdcb *hdp;
{
	register struct mbuf *m;
	register int i;

	/* Clear Transmit queue. */
	while ((m = hd_remove (&hdp->hd_txq)) != NULL)
		m_freem (m);

	/* Clear Retransmit queue. */
	i = hdp->hd_lastrxnr;
	while (i != hdp->hd_retxqi) {
		m_freem (hdp->hd_retxq[i]);
		i = (i + 1) % MODULUS;
	}
	hdp->hd_retxqi = 0;

	hdp->hd_vs = hdp->hd_vr = 0;
	hdp->hd_lasttxnr = hdp->hd_lastrxnr = 0;
	hdp->hd_rrtimer = 0;
	KILL_TIMER(hdp);
	hdp->hd_retxcnt = 0;
	hdp->hd_condition = 0;
}

hd_decode (hdp, frame)
register struct hdcb *hdp;
struct Hdlc_frame *frame;
{
	register int frametype = ILLEGAL;
	register struct Hdlc_iframe *iframe = (struct Hdlc_iframe *) frame;
	register struct Hdlc_sframe *sframe = (struct Hdlc_sframe *) frame;
	register struct Hdlc_uframe *uframe = (struct Hdlc_uframe *) frame;

	if (iframe -> hdlc_0 == 0) {
		frametype = IFRAME;
		hdp->hd_iframes_in++;
	}

	else if (sframe -> hdlc_01 == 1) {
		/* Supervisory format. */
		switch (sframe -> s2) {
		case 0: 
			frametype = RR;
			hdp->hd_rrs_in++;
			break;

		case 1: 
			frametype = RNR;
			hdp->hd_rnrs_in++;
			break;

		case 2: 
			frametype = REJ;
			hdp->hd_rejs_in++;
		}
	}
	else if (uframe -> hdlc_11 == 3) {
		/* Unnumbered format. */
		switch (uframe -> m3) {
		case 0: 
			frametype = DM;
			break;

		case 1: 
			frametype = SABM;
			break;

		case 2: 
			frametype = DISC;
			break;

		case 3: 
			frametype = UA;
			break;

		case 4: 
			frametype = FRMR;
			hdp->hd_frmrs_in++;
		}
	}
	return (frametype);
}

/* 
 *  This routine is called when the HDLC layer internally  generates a
 *  command or  response  for  the remote machine ( eg. RR, UA etc. ). 
 *  Only supervisory or unnumbered frames are processed.
 */

hd_writeinternal (hdp, frametype, pf)
register struct hdcb *hdp;
register int frametype, pf;
{
	register struct mbuf *buf;
	struct Hdlc_frame *frame;
	register struct Hdlc_sframe *sframe;
	register struct Hdlc_uframe *uframe;

	MGETHDR (buf, M_DONTWAIT, MT_HEADER);
	if (buf == 0)
		return;
	frame = mtod (buf, struct Hdlc_frame *);
	sframe = mtod (buf, struct Hdlc_sframe *);
	uframe = mtod (buf, struct Hdlc_uframe *);

	/* Assume a response - address structure for DTE */
	frame -> address = ADDRESS_A;
	buf -> m_len = 2;
	buf -> m_act = buf -> m_next = NULL;

	switch (frametype) {
	case RR: 
		frame -> control = RR_CONTROL;
		hdp->hd_rrs_out++;
		break;

	case RNR: 
		frame -> control = RNR_CONTROL;
		hdp->hd_rnrs_out++;
		break;

	case REJ: 
		frame -> control = REJ_CONTROL;
		hdp->hd_rejs_out++;
		break;

	case SABM: 
		frame -> control = SABM_CONTROL;
		frame -> address = ADDRESS_B;
		break;

	case DISC: 
		if ((hdp->hd_ifp->if_flags & IFF_UP) == 0) {
			hdp->hd_state = DISCONNECTED;
			(void) m_freem (buf);
			hd_flush (hdp->hd_ifp);
			return;
		}
		frame -> control = DISC_CONTROL;
		frame -> address = ADDRESS_B;
		break;

	case DM: 
		frame -> control = DM_CONTROL;
		break;

	case UA: 
		frame -> control = UA_CONTROL;
		break;

	case FRMR: 
		frame -> control = FRMR_CONTROL;
		bcopy ((caddr_t)&hd_frmr, (caddr_t)frame -> info, 3);
		buf -> m_len = 5;
		hdp->hd_frmrs_out++;

	}

	if (sframe -> hdlc_01 == 1) {
		/* Supervisory format - RR, REJ, or RNR. */
		sframe -> nr = hdp->hd_vr;
		sframe -> pf = pf;
		hdp->hd_lasttxnr = hdp->hd_vr;
		hdp->hd_rrtimer = 0;
	}
	else
		uframe -> pf = pf;

	hd_trace (hdp, TX, frame);
	buf -> m_pkthdr.len = buf -> m_len;
	(*hdp->hd_output) (hdp, buf);
}

struct mbuf *
hd_remove (q)
struct hdtxq *q;
{
	register struct mbuf *m;

	m = q -> head;
	if (m) {
		if ((q -> head = m -> m_act) == NULL)
			q -> tail = NULL;
		m -> m_act = 0;
	}
	return (m);
}

hd_append (q, m)
register struct hdtxq *q;
register struct mbuf *m;
{

	m -> m_act = NULL;
	if (q -> tail == NULL)
		q -> head = m;
	else
		q -> tail -> m_act = m;
	q -> tail = m;
}

hd_flush (ifp)
struct ifnet *ifp;
{
	register struct mbuf *m;
	register int s;

	while (1) {
		s = splimp ();
		IF_DEQUEUE (&ifp->if_snd, m);
		splx (s);
		if (m == 0)
			break;
		m_freem (m);
	}
}

hd_message (hdp, msg)
struct hdcb *hdp;
char *msg;
{
	char *format_ntn ();

	if (hdcbhead -> hd_next)
		printf ("HDLC(%s): %s\n", format_ntn (hdp->hd_xcp), msg);
	else
		printf ("HDLC: %s\n", msg);
}

#ifdef HDLCDEBUG
hd_status (hdp)
struct hdcb *hdp;
{
	printf ("HDLC STATUS:\n V(S)=%d, V(R)=%d, retxqi=%d,\n",
		hdp->hd_vs, hdp->hd_vr, hdp->hd_retxqi);

	printf ("Last_rx_nr=%d, Last_tx_nr=%d,\n Condition=%d, Xx=%d\n",
		hdp->hd_lastrxnr, hdp->hd_lasttxnr, hdp->hd_condition, hdp->hd_xx);
}
#endif
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) University of British Columbia, 1984
	3	* Copyright (c) 1990 The Regents of the University of California.
	4	* All rights reserved.
	5	*
	6	* This code is derived from software contributed to Berkeley by
	7	* the Laboratory for Computation Vision and the Computer Science Department
	8	* of the University of British Columbia.
	9	*
	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	* 1. Redistributions of source code must retain the above copyright
	14	* notice, this list of conditions and the following disclaimer.
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in the
	17	* documentation and/or other materials provided with the distribution.
	18	* 3. All advertising materials mentioning features or use of this software
	19	* must display the following acknowledgement:
	20	* This product includes software developed by the University of
	21	* California, Berkeley and its contributors.
	22	* 4. Neither the name of the University nor the names of its contributors
	23	* may be used to endorse or promote products derived from this software
	24	* without specific prior written permission.
	25	*
	26	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	27	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	28	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	29	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	30	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	31	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	32	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	33	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	34	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	35	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	36	* SUCH DAMAGE.
	37	*
1cdffd64 RG	38	* from: @(#)hd_subr.c 7.6 (Berkeley) 5/29/91
1cdffd64 RG	39	* $Id$
15637ed4 RG	40	*/
	41
	42	#include "param.h"
	43	#include "systm.h"
	44	#include "mbuf.h"
	45	#include "domain.h"
	46	#include "socket.h"
	47	#include "protosw.h"
	48	#include "errno.h"
	49	#include "time.h"
	50	#include "kernel.h"
	51
	52	#include "../net/if.h"
	53
	54	#include "hdlc.h"
	55	#include "hd_var.h"
	56	#include "x25.h"
	57
	58	hd_init ()
	59	{
	60
	61	hdintrq.ifq_maxlen = IFQ_MAXLEN;
	62	}
	63
	64	hd_ctlinput (prc, addr)
	65	struct sockaddr *addr;
	66	{
	67	register struct x25config xcp = (struct x25config )addr;
	68	register struct hdcb *hdp;
	69	register struct ifaddr *ifa;
	70	struct ifnet *ifp;
	71	caddr_t pk_newlink();
	72
	73	if (addr->sa_family != AF_CCITT)
	74	return (EAFNOSUPPORT);
	75	if (xcp->xc_lptype != HDLCPROTO_LAPB)
	76	return (EPROTONOSUPPORT);
	77	ifa = ifa_ifwithaddr(addr);
	78	if (ifa == 0 \|\| ifa->ifa_addr->sa_family != AF_CCITT \|\|
	79	(ifp = ifa->ifa_ifp) == 0)
	80	panic ("hd_ctlinput");
	81	for (hdp = hdcbhead; hdp; hdp = hdp->hd_next)
	82	if (hdp->hd_ifp == ifp)
	83	break;
	84
	85	if (hdp == 0) { /* new interface */
	86	int error, hd_ifoutput(), hd_output();
	87
	88	/* an hdcb is now too big to fit in an mbuf */
	89	MALLOC(hdp, struct hdcb , sizeof (hdp), M_PCB, M_DONTWAIT);
	90	if (hdp == 0)
	91	return (ENOBUFS);
	92	bzero((caddr_t)hdp, sizeof(*hdp));
	93	hdp->hd_pkp =
	94	pk_newlink ((struct x25_ifaddr *)ifa, (caddr_t)hdp);
	95	if (hdp -> hd_pkp == 0) {
	96	free(hdp, M_PCB);
	97	return (ENOBUFS);
	98	}
	99	hdp->hd_ifp = ifp;
	100	hdp->hd_ifa = ifa;
	101	hdp->hd_xcp = xcp;
	102	hdp->hd_state = INIT;
	103	hdp->hd_output = hd_ifoutput;
104	hdp->hd_next = hdcbhead;
105	hdcbhead = hdp;
106	}
107
108	switch (prc) {
109	case PRC_IFUP:
110	if (xcp->xc_lwsize == 0 \|\|
111	xcp->xc_lwsize > MAX_WINDOW_SIZE)
112	xcp->xc_lwsize = MAX_WINDOW_SIZE;
113	if (hdp->hd_state == INIT)
114	SET_TIMER (hdp);
115	break;
116
117	case PRC_IFDOWN:
118	if (hdp->hd_state == ABM)
119	hd_message (hdp, "Operator shutdown: link closed");
120	(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
121	hd_writeinternal (hdp, DISC, POLLON);
122	hdp->hd_state = DISC_SENT;
123	SET_TIMER (hdp);
124	}
125	return (0);
126	}
127
128	hd_initvars (hdp)
129	register struct hdcb *hdp;
130	{
131	register struct mbuf *m;
132	register int i;
133
134	/* Clear Transmit queue. */
135	while ((m = hd_remove (&hdp->hd_txq)) != NULL)
136	m_freem (m);
137
138	/* Clear Retransmit queue. */
139	i = hdp->hd_lastrxnr;
140	while (i != hdp->hd_retxqi) {
141	m_freem (hdp->hd_retxq[i]);
142	i = (i + 1) % MODULUS;
143	}
144	hdp->hd_retxqi = 0;
145
146	hdp->hd_vs = hdp->hd_vr = 0;
147	hdp->hd_lasttxnr = hdp->hd_lastrxnr = 0;
148	hdp->hd_rrtimer = 0;
149	KILL_TIMER(hdp);
150	hdp->hd_retxcnt = 0;
151	hdp->hd_condition = 0;
152	}
153
154	hd_decode (hdp, frame)
155	register struct hdcb *hdp;
156	struct Hdlc_frame *frame;
157	{
158	register int frametype = ILLEGAL;
159	register struct Hdlc_iframe iframe = (struct Hdlc_iframe ) frame;
160	register struct Hdlc_sframe sframe = (struct Hdlc_sframe ) frame;
161	register struct Hdlc_uframe uframe = (struct Hdlc_uframe ) frame;
162
163	if (iframe -> hdlc_0 == 0) {
164	frametype = IFRAME;
165	hdp->hd_iframes_in++;
166	}
167
168	else if (sframe -> hdlc_01 == 1) {
169	/* Supervisory format. */
170	switch (sframe -> s2) {
171	case 0:
172	frametype = RR;
173	hdp->hd_rrs_in++;
174	break;
175
176	case 1:
177	frametype = RNR;
178	hdp->hd_rnrs_in++;
179	break;
180
181	case 2:
182	frametype = REJ;
183	hdp->hd_rejs_in++;
184	}
185	}
186	else if (uframe -> hdlc_11 == 3) {
187	/* Unnumbered format. */
188	switch (uframe -> m3) {
189	case 0:
190	frametype = DM;
191	break;
192
193	case 1:
194	frametype = SABM;
195	break;
196
197	case 2:
198	frametype = DISC;
199	break;
200
201	case 3:
202	frametype = UA;
203	break;
204
205	case 4:
206	frametype = FRMR;
207	hdp->hd_frmrs_in++;
208	}
209	}
210	return (frametype);
211	}
212
213	/*
214	* This routine is called when the HDLC layer internally generates a
215	* command or response for the remote machine ( eg. RR, UA etc. ).
216	* Only supervisory or unnumbered frames are processed.
217	*/
218
219	hd_writeinternal (hdp, frametype, pf)
220	register struct hdcb *hdp;
221	register int frametype, pf;
222	{
223	register struct mbuf *buf;
224	struct Hdlc_frame *frame;
225	register struct Hdlc_sframe *sframe;
226	register struct Hdlc_uframe *uframe;
227
228	MGETHDR (buf, M_DONTWAIT, MT_HEADER);
229	if (buf == 0)
230	return;
231	frame = mtod (buf, struct Hdlc_frame *);
232	sframe = mtod (buf, struct Hdlc_sframe *);
233	uframe = mtod (buf, struct Hdlc_uframe *);
234
235	/* Assume a response - address structure for DTE */
236	frame -> address = ADDRESS_A;
237	buf -> m_len = 2;
238	buf -> m_act = buf -> m_next = NULL;
239
240	switch (frametype) {
241	case RR:
242	frame -> control = RR_CONTROL;
243	hdp->hd_rrs_out++;
244	break;
245
246	case RNR:
247	frame -> control = RNR_CONTROL;
248	hdp->hd_rnrs_out++;
249	break;
250
251	case REJ:
252	frame -> control = REJ_CONTROL;
253	hdp->hd_rejs_out++;
254	break;
255
256	case SABM:
257	frame -> control = SABM_CONTROL;
258	frame -> address = ADDRESS_B;
259	break;
260
261	case DISC:
262	if ((hdp->hd_ifp->if_flags & IFF_UP) == 0) {
263	hdp->hd_state = DISCONNECTED;
264	(void) m_freem (buf);
265	hd_flush (hdp->hd_ifp);
266	return;
267	}
268	frame -> control = DISC_CONTROL;
269	frame -> address = ADDRESS_B;
270	break;
271
272	case DM:
273	frame -> control = DM_CONTROL;
274	break;
275
276	case UA:
277	frame -> control = UA_CONTROL;
278	break;
279
280	case FRMR:
281	frame -> control = FRMR_CONTROL;
282	bcopy ((caddr_t)&hd_frmr, (caddr_t)frame -> info, 3);
283	buf -> m_len = 5;
284	hdp->hd_frmrs_out++;
285
286	}
287
288	if (sframe -> hdlc_01 == 1) {
289	/* Supervisory format - RR, REJ, or RNR. */
290	sframe -> nr = hdp->hd_vr;
291	sframe -> pf = pf;
292	hdp->hd_lasttxnr = hdp->hd_vr;
293	hdp->hd_rrtimer = 0;
294	}
295	else
296	uframe -> pf = pf;
297
298	hd_trace (hdp, TX, frame);
299	buf -> m_pkthdr.len = buf -> m_len;
300	(*hdp->hd_output) (hdp, buf);
301	}
302
303	struct mbuf *
304	hd_remove (q)
305	struct hdtxq *q;
306	{
307	register struct mbuf *m;
308
309	m = q -> head;
310	if (m) {
311	if ((q -> head = m -> m_act) == NULL)
312	q -> tail = NULL;
313	m -> m_act = 0;
314	}
315	return (m);
316	}
317
318	hd_append (q, m)
319	register struct hdtxq *q;
320	register struct mbuf *m;
321	{
322
323	m -> m_act = NULL;
324	if (q -> tail == NULL)
325	q -> head = m;
326	else
327	q -> tail -> m_act = m;
328	q -> tail = m;
329	}
330
331	hd_flush (ifp)
332	struct ifnet *ifp;
333	{
334	register struct mbuf *m;
335	register int s;
336
337	while (1) {
338	s = splimp ();
339	IF_DEQUEUE (&ifp->if_snd, m);
340	splx (s);
341	if (m == 0)
342	break;
343	m_freem (m);
344	}
345	}
346
347	hd_message (hdp, msg)
348	struct hdcb *hdp;
349	char *msg;
350	{
351	char *format_ntn ();
352
353	if (hdcbhead -> hd_next)
354	printf ("HDLC(%s): %s\n", format_ntn (hdp->hd_xcp), msg);
355	else
356	printf ("HDLC: %s\n", msg);
357	}
358
359	#ifdef HDLCDEBUG
360	hd_status (hdp)
361	struct hdcb *hdp;
362	{
363	printf ("HDLC STATUS:\n V(S)=%d, V(R)=%d, retxqi=%d,\n",
364	hdp->hd_vs, hdp->hd_vr, hdp->hd_retxqi);
365
366	printf ("Last_rx_nr=%d, Last_tx_nr=%d,\n Condition=%d, Xx=%d\n",
367	hdp->hd_lastrxnr, hdp->hd_lasttxnr, hdp->hd_condition, hdp->hd_xx);
368	}
369	#endif