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1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | * | |
43371f85 RG |
33 | * from: @(#)tp_cons.c 7.8 (Berkeley) 5/9/91 |
34 | * $Id$ | |
15637ed4 RG |
35 | */ |
36 | ||
37 | /*********************************************************** | |
38 | Copyright IBM Corporation 1987 | |
39 | ||
40 | All Rights Reserved | |
41 | ||
42 | Permission to use, copy, modify, and distribute this software and its | |
43 | documentation for any purpose and without fee is hereby granted, | |
44 | provided that the above copyright notice appear in all copies and that | |
45 | both that copyright notice and this permission notice appear in | |
46 | supporting documentation, and that the name of IBM not be | |
47 | used in advertising or publicity pertaining to distribution of the | |
48 | software without specific, written prior permission. | |
49 | ||
50 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
51 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
52 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
53 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
54 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
55 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
56 | SOFTWARE. | |
57 | ||
58 | ******************************************************************/ | |
59 | ||
60 | /* | |
61 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
62 | */ | |
43371f85 | 63 | |
15637ed4 RG |
64 | /* |
65 | * ARGO TP | |
15637ed4 RG |
66 | * |
67 | * Here is where you find the iso- and cons-dependent code. We've tried | |
68 | * keep all net-level and (primarily) address-family-dependent stuff | |
69 | * out of the tp source, and everthing here is reached indirectly | |
70 | * through a switch table (struct nl_protosw *) tpcb->tp_nlproto | |
71 | * (see tp_pcb.c). | |
72 | * The routines here are: | |
73 | * tpcons_input: pullup and call tp_input w/ correct arguments | |
74 | * tpcons_output: package a pkt for cons given an isopcb & some data | |
75 | * cons_chan_to_tpcb: find a tpcb based on the channel # | |
76 | */ | |
77 | ||
78 | #ifdef ISO | |
79 | #ifdef TPCONS | |
80 | ||
81 | #include "param.h" | |
82 | #include "socket.h" | |
83 | #include "domain.h" | |
84 | #include "mbuf.h" | |
85 | #include "errno.h" | |
86 | #include "time.h" | |
87 | ||
88 | #include "../net/if.h" | |
89 | #include "../net/route.h" | |
90 | ||
91 | #include "tp_param.h" | |
92 | #include "argo_debug.h" | |
93 | #include "tp_stat.h" | |
94 | #include "tp_pcb.h" | |
95 | #include "tp_trace.h" | |
96 | #include "tp_stat.h" | |
97 | #include "tp_tpdu.h" | |
98 | #include "iso.h" | |
99 | #include "iso_errno.h" | |
100 | #include "iso_pcb.h" | |
101 | #include "cons.h" | |
102 | #include "tp_seq.h" | |
103 | ||
104 | #undef FALSE | |
105 | #undef TRUE | |
106 | #include "../netccitt/x25.h" | |
107 | #include "../netccitt/pk.h" | |
108 | #include "../netccitt/pk_var.h" | |
109 | ||
110 | #include "if_cons.c" | |
111 | int tpcons_output(); | |
112 | ||
113 | /* | |
114 | * CALLED FROM: | |
115 | * tp_route_to() for PRU_CONNECT | |
116 | * FUNCTION, ARGUMENTS, SIDE EFFECTS and RETURN VALUE: | |
117 | * version of the previous procedure for X.25 | |
118 | */ | |
119 | ||
120 | tpcons_pcbconnect(isop, nam) | |
121 | struct isopcb *isop; | |
122 | register struct mbuf *nam; | |
123 | { | |
124 | int error; | |
125 | if (error = iso_pcbconnect(isop, nam)) | |
126 | return error; | |
127 | if ((isop->isop_chan = (caddr_t) pk_attach((struct socket *)0)) == 0) { | |
128 | IFDEBUG(D_CCONS) | |
129 | printf("tpcons_pcbconnect: no pklcd; returns 0x%x\n", error); | |
130 | ENDDEBUG | |
131 | return ENOBUFS; | |
132 | } | |
133 | if (error = cons_connect(isop)) { /* if it doesn't work */ | |
134 | /* oh, dear, throw packet away */ | |
135 | pk_disconnect((struct pklcd *)isop->isop_chan); | |
136 | isop->isop_chan = 0; | |
137 | } else | |
138 | isop->isop_refcnt = 1; | |
139 | return error; | |
140 | } | |
141 | ||
142 | ||
143 | /* | |
144 | * CALLED FROM: | |
145 | * cons | |
146 | * FUNCTION and ARGUMENTS: | |
147 | * THIS MAYBE BELONGS IN SOME OTHER PLACE??? but i think not - | |
148 | */ | |
149 | ProtoHook | |
150 | tpcons_ctlinput(cmd, siso, isop) | |
151 | int cmd; | |
152 | struct sockaddr_iso *siso; | |
153 | struct isopcb *isop; | |
154 | { | |
155 | switch (cmd) { | |
156 | ||
157 | case PRC_CONS_SEND_DONE: | |
158 | if( isop->isop_socket ) { /* tp 0 only */ | |
159 | register struct tp_pcb *tpcb = | |
160 | (struct tp_pcb *)isop->isop_socket->so_tpcb; | |
161 | struct tp_event E; | |
162 | int error = 0; | |
163 | ||
164 | if( tpcb->tp_class == TP_CLASS_0 ) { | |
165 | /* only if class is exactly class zero, not | |
166 | * still in class negotiation | |
167 | */ | |
168 | /* fake an ack */ | |
169 | register SeqNum seq = SEQ_ADD(tpcb, tpcb->tp_snduna, 1); | |
170 | ||
171 | IFTRACE(D_DATA) | |
172 | tptrace(TPPTmisc, "FAKE ACK seq cdt 1", | |
173 | seq, 0,0,0); | |
174 | ENDTRACE | |
175 | IFDEBUG(D_DATA) | |
176 | printf("FAKE ACK seq 0x%x cdt 1\n", seq ); | |
177 | ENDDEBUG | |
178 | E.ATTR(AK_TPDU).e_cdt = 1; | |
179 | E.ATTR(AK_TPDU).e_seq = seq; | |
180 | E.ATTR(AK_TPDU).e_subseq = 0; | |
181 | E.ATTR(AK_TPDU).e_fcc_present = 0; | |
182 | error = DoEvent(AK_TPDU); | |
183 | if( error ) { | |
184 | tpcb->tp_sock->so_error = error; | |
185 | } | |
186 | } /* else ignore it */ | |
187 | } | |
188 | break; | |
189 | case PRC_ROUTEDEAD: | |
190 | if( isop->isop_socket ) { /* tp 0 only */ | |
191 | tpiso_reset(isop); | |
192 | break; | |
193 | } /* else drop through */ | |
194 | default: | |
195 | (void) tpclnp_ctlinput(cmd, siso); | |
196 | break; | |
197 | } | |
198 | return 0; | |
199 | } | |
200 | ||
201 | /* | |
202 | * CALLED FROM: | |
203 | * cons's intr routine | |
204 | * FUNCTION and ARGUMENTS: | |
205 | * Take a packet (m) from cons, pullup m as required by tp, | |
206 | * ignore the socket argument, and call tp_input. | |
207 | * No return value. | |
208 | */ | |
209 | ProtoHook | |
210 | tpcons_input(m, faddr, laddr, channel) | |
211 | struct mbuf *m; | |
212 | struct sockaddr_iso *faddr, *laddr; | |
213 | caddr_t channel; | |
214 | { | |
215 | if( m == MNULL) | |
216 | return 0; | |
217 | ||
218 | m = (struct mbuf *)tp_inputprep(m); | |
219 | ||
220 | IFDEBUG(D_TPINPUT) | |
221 | printf("tpcons_input before tp_input(m 0x%x)\n", m); | |
222 | dump_buf( m, 12+ m->m_len); | |
223 | ENDDEBUG | |
224 | tp_input(m, faddr, laddr, channel, tpcons_output, 0); | |
225 | return 0; | |
226 | } | |
227 | ||
228 | ||
229 | /* | |
230 | * CALLED FROM: | |
231 | * tp_emit() | |
232 | * FUNCTION and ARGUMENTS: | |
233 | * Take a packet(m0) from tp and package it so that cons will accept it. | |
234 | * This means filling in a few of the fields. | |
235 | * inp is the isopcb structure; datalen is the length of the data in the | |
236 | * mbuf string m0. | |
237 | * RETURN VALUE: | |
238 | * whatever (E*) is returned form the net layer output routine. | |
239 | */ | |
240 | ||
241 | int | |
242 | tpcons_output(isop, m0, datalen, nochksum) | |
243 | struct isopcb *isop; | |
244 | struct mbuf *m0; | |
245 | int datalen; | |
246 | int nochksum; | |
247 | { | |
248 | register struct mbuf *m = m0; | |
249 | int error; | |
250 | ||
251 | IFDEBUG(D_EMIT) | |
252 | printf( | |
253 | "tpcons_output(isop 0x%x, m 0x%x, len 0x%x socket 0x%x\n", | |
254 | isop, m0, datalen, isop->isop_socket); | |
255 | ENDDEBUG | |
256 | if (m == MNULL) | |
257 | return 0; | |
258 | if ((m->m_flags & M_PKTHDR) == 0) { | |
259 | MGETHDR(m, M_DONTWAIT, MT_DATA); | |
260 | if (m == 0) | |
261 | return ENOBUFS; | |
262 | m->m_next = m0; | |
263 | } | |
264 | m->m_pkthdr.len = datalen; | |
265 | error = pk_send(isop->isop_chan, m); | |
266 | IncStat(ts_tpdu_sent); | |
267 | ||
268 | return error; | |
269 | } | |
270 | /* | |
271 | * CALLED FROM: | |
272 | * tp_error_emit() | |
273 | * FUNCTION and ARGUMENTS: | |
274 | * Take a packet(m0) from tp and package it so that cons will accept it. | |
275 | * chan is the cons channel to use; datalen is the length of the data in the | |
276 | * mbuf string m0. | |
277 | * RETURN VALUE: | |
278 | * whatever (E*) is returned form the net layer output routine. | |
279 | */ | |
280 | ||
281 | int | |
282 | tpcons_dg_output(chan, m0, datalen) | |
283 | caddr_t chan; | |
284 | struct mbuf *m0; | |
285 | int datalen; | |
286 | { | |
287 | return tpcons_output(((struct pklcd *)chan)->lcd_upnext, m0, datalen, 0); | |
288 | } | |
289 | #endif TPCONS | |
290 | #endif ISO |