[apple/xnu.git] / bsd / netiso / tp_cons.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*-
 * Copyright (c) 1991, 1993
 *	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_cons.c	8.1 (Berkeley) 6/10/93
 */

/***********************************************************
		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
 * Here is where you find the iso- and cons-dependent code.  We've tried
 * keep all net-level and (primarily) address-family-dependent stuff
 * out of the tp source, and everthing here is reached indirectly
 * through a switch table (struct nl_protosw *) tpcb->tp_nlproto 
 * (see tp_pcb.c). 
 * The routines here are:
 *	tpcons_input: pullup and call tp_input w/ correct arguments
 *	tpcons_output: package a pkt for cons given an isopcb & some data
 *	cons_chan_to_tpcb: find a tpcb based on the channel #
 */

#if ISO
#if TPCONS

#include <sys/param.h>
#include <sys/socket.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/errno.h>
#include <sys/time.h>

#include <net/if.h>
#include <net/route.h>

#include <netiso/tp_param.h>
#include <netiso/argo_debug.h>
#include <netiso/tp_stat.h>
#include <netiso/tp_pcb.h>
#include <netiso/tp_trace.h>
#include <netiso/tp_stat.h>
#include <netiso/tp_tpdu.h>
#include <netiso/iso.h>
#include <netiso/iso_errno.h>
#include <netiso/iso_pcb.h>
#include <netiso/cons.h>
#include <netiso/tp_seq.h>

#undef FALSE
#undef TRUE
#include <netccitt/x25.h>
#include <netccitt/pk.h>
#include <netccitt/pk_var.h>

#include <netiso/if_cons.c>
int tpcons_output();

/*
 * CALLED FROM:
 *  tp_route_to() for PRU_CONNECT
 * FUNCTION, ARGUMENTS, SIDE EFFECTS and RETURN VALUE:
 *  version of the previous procedure for X.25
 */

tpcons_pcbconnect(isop, nam)
struct isopcb *isop;
register struct mbuf *nam;
{
	int error;
	if (error = iso_pcbconnect(isop, nam))
		return error;
	if ((isop->isop_chan = (caddr_t) pk_attach((struct socket *)0)) == 0) {
		IFDEBUG(D_CCONS)
			printf("tpcons_pcbconnect: no pklcd; returns 0x%x\n", error);
		ENDDEBUG
		return ENOBUFS;
	}
	if (error = cons_connect(isop)) { /* if it doesn't work */
		/* oh, dear, throw packet away */
		pk_disconnect((struct pklcd *)isop->isop_chan);
		isop->isop_chan = 0;
	} else 
		isop->isop_refcnt = 1;
	return error;
}


/*
 * CALLED FROM:
 * 	cons
 * FUNCTION and ARGUMENTS:
 * THIS MAYBE BELONGS IN SOME OTHER PLACE??? but i think not -
 */
ProtoHook
tpcons_ctlinput(cmd, siso, isop)
	int cmd; 
	struct sockaddr_iso *siso;
	struct isopcb *isop;
{
	register struct tp_pcb *tpcb = 0;

	if (isop->isop_socket)
		tpcb = (struct tp_pcb *)isop->isop_socket->so_pcb;
	switch (cmd) {

	case PRC_CONS_SEND_DONE:
		if (tpcb) {
			struct 	tp_event 		E;
			int 					error = 0;

			if (tpcb->tp_class == TP_CLASS_0) {
				/* only if class is exactly class zero, not
				 * still in class negotiation
				 */
				/* fake an ack */
				register SeqNum	seq =  SEQ_ADD(tpcb, tpcb->tp_snduna, 1);

				IFTRACE(D_DATA)
					tptrace(TPPTmisc, "FAKE ACK seq cdt 1", 
						seq, 0,0,0);
				ENDTRACE
				IFDEBUG(D_DATA)
					printf("FAKE ACK seq 0x%x cdt 1\n", seq );
				ENDDEBUG
				E.ATTR(AK_TPDU).e_cdt = 1;
				E.ATTR(AK_TPDU).e_seq = seq;
				E.ATTR(AK_TPDU).e_subseq = 0;
				E.ATTR(AK_TPDU).e_fcc_present = 0;
				error =  DoEvent(AK_TPDU);
				if( error ) {
					tpcb->tp_sock->so_error = error;
				}
			} /* else ignore it */
		}
		break;
	case PRC_ROUTEDEAD:
		if (tpcb && tpcb->tp_class == TP_CLASS_0) {
			tpiso_reset(isop);
			break;
		} /* else drop through */
	default:
		(void) tpclnp_ctlinput(cmd, siso);
		break;
	}
	return 0;
}

/*
 * CALLED FROM:
 * 	cons's intr routine
 * FUNCTION and ARGUMENTS:
 * Take a packet (m) from cons, pullup m as required by tp,
 *  ignore the socket argument, and call tp_input. 
 * No return value.  
 */
ProtoHook
tpcons_input(m, faddr, laddr, channel)
	struct mbuf 		*m;
	struct sockaddr_iso	*faddr, *laddr;
	caddr_t				channel;
{
	if( m == MNULL)
		return 0;

	m = (struct mbuf *)tp_inputprep(m);

	IFDEBUG(D_TPINPUT)
		printf("tpcons_input before tp_input(m 0x%x)\n", m);
		dump_buf( m, 12+ m->m_len);
	ENDDEBUG
	tp_input(m, faddr, laddr, channel, tpcons_output, 0);
	return 0;
}


/*
 * CALLED FROM:
 *  tp_emit()
 * FUNCTION and ARGUMENTS:
 *  Take a packet(m0) from tp and package it so that cons will accept it.
 *  This means filling in a few of the fields.
 *  inp is the isopcb structure; datalen is the length of the data in the
 *  mbuf string m0.
 * RETURN VALUE:
 *  whatever (E*) is returned form the net layer output routine.
 */

int
tpcons_output(isop, m0, datalen, nochksum)
	struct isopcb		*isop;
	struct mbuf 		*m0;
	int 				datalen;
	int					nochksum;
{
	register	struct mbuf *m = m0;
	int					error;

	IFDEBUG(D_EMIT)
		printf(
		"tpcons_output(isop 0x%x, m 0x%x, len 0x%x socket 0x%x\n",
			isop, m0, datalen, isop->isop_socket);
	ENDDEBUG
	if (m == MNULL)
		return 0;
	if ((m->m_flags & M_PKTHDR) == 0) {
		MGETHDR(m, M_DONTWAIT, MT_DATA);
		if (m == 0)
			return ENOBUFS;
		m->m_next = m0;
	}
	m->m_pkthdr.len = datalen;
	if (isop->isop_chan == 0) {
		/* got a restart maybe? */
		if ((isop->isop_chan = (caddr_t) pk_attach((struct socket *)0)) == 0) {
			IFDEBUG(D_CCONS)
				printf("tpcons_output: no pklcd\n");
			ENDDEBUG
			error = ENOBUFS;
		}
		if (error = cons_connect(isop)) {
			pk_disconnect((struct pklcd *)isop->isop_chan);
			isop->isop_chan = 0;
			IFDEBUG(D_CCONS)
				printf("tpcons_output: can't reconnect\n");
			ENDDEBUG
		}
	} else {
		error = pk_send(isop->isop_chan, m);
		IncStat(ts_tpdu_sent);
	}
	return error;
}
/*
 * CALLED FROM:
 *  tp_error_emit()
 * FUNCTION and ARGUMENTS:
 *  Take a packet(m0) from tp and package it so that cons will accept it.
 *  chan is the cons channel to use; datalen is the length of the data in the
 *  mbuf string m0.
 * RETURN VALUE:
 *  whatever (E*) is returned form the net layer output routine.
 */

int
tpcons_dg_output(chan, m0, datalen)
	caddr_t				chan;
	struct mbuf 		*m0;
	int 				datalen;
{
	return tpcons_output(((struct pklcd *)chan)->lcd_upnext, m0, datalen, 0);
}
#endif /* TPCONS */
#endif /* ISO */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*-
	23	* Copyright (c) 1991, 1993
	24	* The Regents of the University of California. All rights reserved.
	25	*
	26	* Redistribution and use in source and binary forms, with or without
	27	* modification, are permitted provided that the following conditions
	28	* are met:
	29	* 1. Redistributions of source code must retain the above copyright
	30	* notice, this list of conditions and the following disclaimer.
	31	* 2. Redistributions in binary form must reproduce the above copyright
	32	* notice, this list of conditions and the following disclaimer in the
	33	* documentation and/or other materials provided with the distribution.
	34	* 3. All advertising materials mentioning features or use of this software
	35	* must display the following acknowledgement:
	36	* This product includes software developed by the University of
	37	* California, Berkeley and its contributors.
	38	* 4. Neither the name of the University nor the names of its contributors
	39	* may be used to endorse or promote products derived from this software
	40	* without specific prior written permission.
	41	*
	42	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	43	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	44	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	45	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	46	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	47	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	48	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	49	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	50	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	51	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	52	* SUCH DAMAGE.
	53	*
	54	* @(#)tp_cons.c 8.1 (Berkeley) 6/10/93
	55	*/
	56
	57	/***********************************************************
	58	Copyright IBM Corporation 1987
	59
	60	All Rights Reserved
	61
	62	Permission to use, copy, modify, and distribute this software and its
	63	documentation for any purpose and without fee is hereby granted,
	64	provided that the above copyright notice appear in all copies and that
65	both that copyright notice and this permission notice appear in
66	supporting documentation, and that the name of IBM not be
67	used in advertising or publicity pertaining to distribution of the
68	software without specific, written prior permission.
69
70	IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
71	ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
72	IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
73	ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
74	WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
75	ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
76	SOFTWARE.
77
78	******************************************************************/
79
80	/*
81	* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
82	*/
83	/*
84	* ARGO TP
85	* Here is where you find the iso- and cons-dependent code. We've tried
86	* keep all net-level and (primarily) address-family-dependent stuff
87	* out of the tp source, and everthing here is reached indirectly
88	* through a switch table (struct nl_protosw *) tpcb->tp_nlproto
89	* (see tp_pcb.c).
90	* The routines here are:
91	* tpcons_input: pullup and call tp_input w/ correct arguments
92	* tpcons_output: package a pkt for cons given an isopcb & some data
93	* cons_chan_to_tpcb: find a tpcb based on the channel #
94	*/
95
96	#if ISO
97	#if TPCONS
98
99	#include <sys/param.h>
100	#include <sys/socket.h>
101	#include <sys/domain.h>
102	#include <sys/mbuf.h>
103	#include <sys/errno.h>
104	#include <sys/time.h>
105
106	#include <net/if.h>
107	#include <net/route.h>
108
109	#include <netiso/tp_param.h>
110	#include <netiso/argo_debug.h>
111	#include <netiso/tp_stat.h>
112	#include <netiso/tp_pcb.h>
113	#include <netiso/tp_trace.h>
114	#include <netiso/tp_stat.h>
115	#include <netiso/tp_tpdu.h>
116	#include <netiso/iso.h>
117	#include <netiso/iso_errno.h>
118	#include <netiso/iso_pcb.h>
119	#include <netiso/cons.h>
120	#include <netiso/tp_seq.h>
121
122	#undef FALSE
123	#undef TRUE
124	#include <netccitt/x25.h>
125	#include <netccitt/pk.h>
126	#include <netccitt/pk_var.h>
127
128	#include <netiso/if_cons.c>
129	int tpcons_output();
130
131	/*
132	* CALLED FROM:
133	* tp_route_to() for PRU_CONNECT
134	* FUNCTION, ARGUMENTS, SIDE EFFECTS and RETURN VALUE:
135	* version of the previous procedure for X.25
136	*/
137
138	tpcons_pcbconnect(isop, nam)
139	struct isopcb *isop;
140	register struct mbuf *nam;
141	{
142	int error;
143	if (error = iso_pcbconnect(isop, nam))
144	return error;
145	if ((isop->isop_chan = (caddr_t) pk_attach((struct socket *)0)) == 0) {
146	IFDEBUG(D_CCONS)
147	printf("tpcons_pcbconnect: no pklcd; returns 0x%x\n", error);
148	ENDDEBUG
149	return ENOBUFS;
150	}
151	if (error = cons_connect(isop)) { /* if it doesn't work */
152	/* oh, dear, throw packet away */
153	pk_disconnect((struct pklcd *)isop->isop_chan);
154	isop->isop_chan = 0;
155	} else
156	isop->isop_refcnt = 1;
157	return error;
158	}
159
160
161	/*
162	* CALLED FROM:
163	* cons
164	* FUNCTION and ARGUMENTS:
165	* THIS MAYBE BELONGS IN SOME OTHER PLACE??? but i think not -
166	*/
167	ProtoHook
168	tpcons_ctlinput(cmd, siso, isop)
169	int cmd;
170	struct sockaddr_iso *siso;
171	struct isopcb *isop;
172	{
173	register struct tp_pcb *tpcb = 0;
174
175	if (isop->isop_socket)
176	tpcb = (struct tp_pcb *)isop->isop_socket->so_pcb;
177	switch (cmd) {
178
179	case PRC_CONS_SEND_DONE:
180	if (tpcb) {
181	struct tp_event E;
182	int error = 0;
183
184	if (tpcb->tp_class == TP_CLASS_0) {
185	/* only if class is exactly class zero, not
186	* still in class negotiation
187	*/
188	/* fake an ack */
189	register SeqNum seq = SEQ_ADD(tpcb, tpcb->tp_snduna, 1);
190
191	IFTRACE(D_DATA)
192	tptrace(TPPTmisc, "FAKE ACK seq cdt 1",
193	seq, 0,0,0);
194	ENDTRACE
195	IFDEBUG(D_DATA)
196	printf("FAKE ACK seq 0x%x cdt 1\n", seq );
197	ENDDEBUG
198	E.ATTR(AK_TPDU).e_cdt = 1;
199	E.ATTR(AK_TPDU).e_seq = seq;
200	E.ATTR(AK_TPDU).e_subseq = 0;
201	E.ATTR(AK_TPDU).e_fcc_present = 0;
202	error = DoEvent(AK_TPDU);
203	if( error ) {
204	tpcb->tp_sock->so_error = error;
205	}
206	} /* else ignore it */
207	}
208	break;
209	case PRC_ROUTEDEAD:
210	if (tpcb && tpcb->tp_class == TP_CLASS_0) {
211	tpiso_reset(isop);
212	break;
213	} /* else drop through */
214	default:
215	(void) tpclnp_ctlinput(cmd, siso);
216	break;
217	}
218	return 0;
219	}
220
221	/*
222	* CALLED FROM:
223	* cons's intr routine
224	* FUNCTION and ARGUMENTS:
225	* Take a packet (m) from cons, pullup m as required by tp,
226	* ignore the socket argument, and call tp_input.
227	* No return value.
228	*/
229	ProtoHook
230	tpcons_input(m, faddr, laddr, channel)
231	struct mbuf *m;
232	struct sockaddr_iso faddr, laddr;
233	caddr_t channel;
234	{
235	if( m == MNULL)
236	return 0;
237
238	m = (struct mbuf *)tp_inputprep(m);
239
240	IFDEBUG(D_TPINPUT)
241	printf("tpcons_input before tp_input(m 0x%x)\n", m);
242	dump_buf( m, 12+ m->m_len);
243	ENDDEBUG
244	tp_input(m, faddr, laddr, channel, tpcons_output, 0);
245	return 0;
246	}
247
248
249	/*
250	* CALLED FROM:
251	* tp_emit()
252	* FUNCTION and ARGUMENTS:
253	* Take a packet(m0) from tp and package it so that cons will accept it.
254	* This means filling in a few of the fields.
255	* inp is the isopcb structure; datalen is the length of the data in the
256	* mbuf string m0.
257	* RETURN VALUE:
258	* whatever (E*) is returned form the net layer output routine.
259	*/
260
261	int
262	tpcons_output(isop, m0, datalen, nochksum)
263	struct isopcb *isop;
264	struct mbuf *m0;
265	int datalen;
266	int nochksum;
267	{
268	register struct mbuf *m = m0;
269	int error;
270
271	IFDEBUG(D_EMIT)
272	printf(
273	"tpcons_output(isop 0x%x, m 0x%x, len 0x%x socket 0x%x\n",
274	isop, m0, datalen, isop->isop_socket);
275	ENDDEBUG
276	if (m == MNULL)
277	return 0;
278	if ((m->m_flags & M_PKTHDR) == 0) {
279	MGETHDR(m, M_DONTWAIT, MT_DATA);
280	if (m == 0)
281	return ENOBUFS;
282	m->m_next = m0;
283	}
284	m->m_pkthdr.len = datalen;
285	if (isop->isop_chan == 0) {
286	/* got a restart maybe? */
287	if ((isop->isop_chan = (caddr_t) pk_attach((struct socket *)0)) == 0) {
288	IFDEBUG(D_CCONS)
289	printf("tpcons_output: no pklcd\n");
290	ENDDEBUG
291	error = ENOBUFS;
292	}
293	if (error = cons_connect(isop)) {
294	pk_disconnect((struct pklcd *)isop->isop_chan);
295	isop->isop_chan = 0;
296	IFDEBUG(D_CCONS)
297	printf("tpcons_output: can't reconnect\n");
298	ENDDEBUG
299	}
300	} else {
301	error = pk_send(isop->isop_chan, m);
302	IncStat(ts_tpdu_sent);
303	}
304	return error;
305	}
306	/*
307	* CALLED FROM:
308	* tp_error_emit()
309	* FUNCTION and ARGUMENTS:
310	* Take a packet(m0) from tp and package it so that cons will accept it.
311	* chan is the cons channel to use; datalen is the length of the data in the
312	* mbuf string m0.
313	* RETURN VALUE:
314	* whatever (E*) is returned form the net layer output routine.
315	*/
316
317	int
318	tpcons_dg_output(chan, m0, datalen)
319	caddr_t chan;
320	struct mbuf *m0;
321	int datalen;
322	{
323	return tpcons_output(((struct pklcd *)chan)->lcd_upnext, m0, datalen, 0);
324	}
325	#endif /* TPCONS */
326	#endif /* ISO */