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1.1 root 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 */
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