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7bcd1bb8 | 1 | /*- |
ad787160 C |
2 | * Copyright (c) 1991, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
7bcd1bb8 | 4 | * |
ad787160 C |
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. | |
7bcd1bb8 | 20 | * |
ad787160 C |
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 | * | |
33 | * @(#)if_cons.c 8.1 (Berkeley) 6/10/93 | |
7bcd1bb8 KB |
34 | */ |
35 | ||
3b1d357b KS |
36 | /*********************************************************** |
37 | Copyright IBM Corporation 1987 | |
38 | ||
39 | All Rights Reserved | |
40 | ||
41 | Permission to use, copy, modify, and distribute this software and its | |
42 | documentation for any purpose and without fee is hereby granted, | |
43 | provided that the above copyright notice appear in all copies and that | |
44 | both that copyright notice and this permission notice appear in | |
45 | supporting documentation, and that the name of IBM not be | |
46 | used in advertising or publicity pertaining to distribution of the | |
47 | software without specific, written prior permission. | |
48 | ||
49 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
50 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
51 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
52 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
53 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
54 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
55 | SOFTWARE. | |
56 | ||
57 | ******************************************************************/ | |
58 | ||
59 | /* | |
60 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
61 | */ | |
62 | /* | |
63 | * $Header: if_cons.c,v 4.7 88/08/11 15:52:55 nhall Exp $ | |
64 | * $Source: /usr/argo/sys/netiso/RCS/if_cons.c,v $ | |
65 | * | |
66 | * cons.c - Connection Oriented Network Service: | |
67 | * including support for a) user transport-level service, | |
68 | * b) COSNS below CLNP, and c) CONS below TP. | |
194a383a | 69 | */ |
3b1d357b | 70 | |
194a383a KS |
71 | #ifdef TPCONS |
72 | #ifdef KERNEL | |
3b1d357b KS |
73 | #ifdef ARGO_DEBUG |
74 | #define Static | |
75 | unsigned LAST_CALL_PCB; | |
4d8170e5 | 76 | #else /* ARGO_DEBUG */ |
3b1d357b | 77 | #define Static static |
4d8170e5 | 78 | #endif /* ARGO_DEBUG */ |
3b1d357b | 79 | |
194a383a | 80 | #ifndef SOCK_STREAM |
5548a02f KB |
81 | #include <sys/param.h> |
82 | #include <sys/systm.h> | |
83 | #include <sys/mbuf.h> | |
84 | #include <sys/protosw.h> | |
85 | #include <sys/socket.h> | |
86 | #include <sys/socketvar.h> | |
87 | #include <sys/errno.h> | |
88 | #include <sys/ioctl.h> | |
89 | #include <sys/tsleep.h> | |
90 | ||
91 | #include <net/if.h> | |
92 | #include <net/netisr.h> | |
93 | #include <net/route.h> | |
94 | ||
95 | #include <netiso/iso_errno.h> | |
96 | #include <netiso/argo_debug.h> | |
97 | #include <netiso/tp_trace.h> | |
98 | #include <netiso/iso.h> | |
99 | #include <netiso/cons.h> | |
100 | #include <netiso/iso_pcb.h> | |
101 | ||
102 | #include <netccitt/x25.h> | |
103 | #include <netccitt/pk.h> | |
104 | #include <netccitt/pk_var.h> | |
194a383a | 105 | #endif |
3b1d357b KS |
106 | |
107 | #ifdef ARGO_DEBUG | |
108 | #define MT_XCONN 0x50 | |
109 | #define MT_XCLOSE 0x51 | |
110 | #define MT_XCONFIRM 0x52 | |
111 | #define MT_XDATA 0x53 | |
112 | #define MT_XHEADER 0x54 | |
113 | #else | |
114 | #define MT_XCONN MT_DATA | |
115 | #define MT_XCLOSE MT_DATA | |
116 | #define MT_XCONFIRM MT_DATA | |
117 | #define MT_XDATA MT_DATA | |
118 | #define MT_XHEADER MT_HEADER | |
4d8170e5 | 119 | #endif /* ARGO_DEBUG */ |
3b1d357b KS |
120 | |
121 | #define DONTCLEAR -1 | |
122 | ||
123 | /********************************************************************* | |
194a383a | 124 | * cons.c - CONS interface to the x.25 layer |
3b1d357b KS |
125 | * |
126 | * TODO: figure out what resources we might run out of besides mbufs. | |
127 | * If we run out of any of them (including mbufs) close and recycle | |
128 | * lru x% of the connections, for some parameter x. | |
129 | * | |
194a383a | 130 | * There are 2 interfaces from above: |
3b1d357b KS |
131 | * 1) from TP0: |
132 | * cons CO network service | |
133 | * TP associates a transport connection with a network connection. | |
134 | * cons_output( isop, m, len, isdgm==0 ) | |
135 | * co_flags == 0 | |
194a383a | 136 | * 2) from TP4: |
3b1d357b KS |
137 | * It's a datagram service, like clnp is. - even though it calls |
138 | * cons_output( isop, m, len, isdgm==1 ) | |
139 | * it eventually goes through | |
140 | * cosns_output(ifp, m, dst). | |
141 | * TP4 permits multiplexing (reuse, possibly simultaneously) of the | |
142 | * network connections. | |
143 | * This means that many sockets (many tpcbs) may be associated with | |
194a383a | 144 | * this pklcd, hence cannot have a back ptr from pklcd to a tpcb. |
3b1d357b | 145 | * co_flags & CONSF_DGM |
194a383a | 146 | * co_socket is null since there may be many sockets that use this pklcd. |
3b1d357b KS |
147 | * |
148 | NOTE: | |
149 | streams would really be nice. sigh. | |
3b1d357b KS |
150 | NOTE: |
151 | PVCs could be handled by config-ing a cons with an address and with the | |
152 | IFF_POINTTOPOINT flag on. This code would then have to skip the | |
153 | connection setup stuff for pt-to-pt links. | |
3b1d357b KS |
154 | |
155 | ||
156 | *********************************************************************/ | |
157 | ||
3b1d357b KS |
158 | |
159 | #define CONS_IFQMAXLEN 5 | |
160 | ||
3b1d357b KS |
161 | |
162 | /* protosw pointers for getting to higher layer */ | |
163 | Static struct protosw *CLNP_proto; | |
164 | Static struct protosw *TP_proto; | |
165 | Static struct protosw *X25_proto; | |
166 | Static int issue_clear_req(); | |
167 | ||
168 | #ifndef PHASEONE | |
169 | extern struct ifaddr *ifa_ifwithnet(); | |
4d8170e5 | 170 | #endif /* PHASEONE */ |
3b1d357b KS |
171 | |
172 | extern struct ifaddr *ifa_ifwithaddr(); | |
173 | ||
3b1d357b | 174 | extern struct isopcb tp_isopcb; /* chain of all TP pcbs */ |
3b1d357b | 175 | |
3b1d357b KS |
176 | |
177 | Static int parse_facil(), NSAPtoDTE(), make_partial_x25_packet(); | |
178 | Static int FACILtoNSAP(), DTEtoNSAP(); | |
194a383a | 179 | Static struct pklcd *cons_chan_to_pcb(); |
3b1d357b KS |
180 | |
181 | #define HIGH_NIBBLE 1 | |
182 | #define LOW_NIBBLE 0 | |
183 | ||
184 | /* | |
185 | * NAME: nibble_copy() | |
186 | * FUNCTION and ARGUMENTS: | |
187 | * copies (len) nibbles from (src_octet), high or low nibble | |
188 | * to (dst_octet), high or low nibble, | |
189 | * src_nibble & dst_nibble should be: | |
190 | * HIGH_NIBBLE (1) if leftmost 4 bits/ most significant nibble | |
191 | * LOW_NIBBLE (0) if rightmost 4 bits/ least significant nibble | |
192 | * RETURNS: VOID | |
193 | */ | |
194 | void | |
194a383a | 195 | nibble_copy(src_octet, src_nibble, dst_octet, dst_nibble, len) |
3b1d357b KS |
196 | register char *src_octet; |
197 | register char *dst_octet; | |
198 | register unsigned src_nibble; | |
199 | register unsigned dst_nibble; | |
200 | int len; | |
201 | { | |
202 | ||
203 | register i; | |
204 | register unsigned dshift, sshift; | |
205 | ||
206 | IFDEBUG(D_CADDR) | |
207 | printf("nibble_copy ( 0x%x, 0x%x, 0x%x, 0x%x 0x%x)\n", | |
208 | src_octet, src_nibble, dst_octet, dst_nibble, len); | |
209 | ENDDEBUG | |
210 | #define SHIFT 0x4 | |
211 | ||
212 | dshift = dst_nibble << 2; | |
213 | sshift = src_nibble << 2; | |
214 | ||
215 | for (i=0; i<len; i++) { | |
216 | /* clear dst_nibble */ | |
217 | *dst_octet &= ~(0xf<< dshift); | |
218 | ||
219 | /* set dst nibble */ | |
220 | *dst_octet |= ( 0xf & (*src_octet >> sshift))<< dshift; | |
221 | ||
222 | dshift ^= SHIFT; | |
223 | sshift ^= SHIFT; | |
224 | src_nibble = 1-src_nibble; | |
225 | dst_nibble = 1-dst_nibble; | |
226 | src_octet += src_nibble; | |
227 | dst_octet += dst_nibble; | |
228 | } | |
229 | IFDEBUG(D_CADDR) | |
230 | printf("nibble_copy DONE\n"); | |
231 | ENDDEBUG | |
232 | } | |
233 | ||
234 | /* | |
235 | * NAME: nibble_match() | |
236 | * FUNCTION and ARGUMENTS: | |
237 | * compares src_octet/src_nibble and dst_octet/dst_nibble for len nibbles. | |
238 | * RETURNS: 0 if they differ, 1 if they are the same. | |
239 | */ | |
240 | int | |
241 | nibble_match( src_octet, src_nibble, dst_octet, dst_nibble, len) | |
242 | register char *src_octet; | |
243 | register char *dst_octet; | |
244 | register unsigned src_nibble; | |
245 | register unsigned dst_nibble; | |
246 | int len; | |
247 | { | |
248 | ||
249 | register i; | |
250 | register unsigned dshift, sshift; | |
251 | u_char nibble_a, nibble_b; | |
252 | ||
253 | IFDEBUG(D_CADDR) | |
254 | printf("nibble_match ( 0x%x, 0x%x, 0x%x, 0x%x 0x%x)\n", | |
255 | src_octet, src_nibble, dst_octet, dst_nibble, len); | |
256 | ENDDEBUG | |
257 | #define SHIFT 0x4 | |
258 | ||
259 | dshift = dst_nibble << 2; | |
260 | sshift = src_nibble << 2; | |
261 | ||
262 | for (i=0; i<len; i++) { | |
263 | nibble_b = ((*dst_octet)>>dshift) & 0xf; | |
264 | nibble_a = ( 0xf & (*src_octet >> sshift)); | |
194a383a | 265 | if (nibble_b != nibble_a) |
3b1d357b KS |
266 | return 0; |
267 | ||
268 | dshift ^= SHIFT; | |
269 | sshift ^= SHIFT; | |
270 | src_nibble = 1-src_nibble; | |
271 | dst_nibble = 1-dst_nibble; | |
272 | src_octet += src_nibble; | |
273 | dst_octet += dst_nibble; | |
274 | } | |
275 | IFDEBUG(D_CADDR) | |
276 | printf("nibble_match DONE\n"); | |
277 | ENDDEBUG | |
278 | return 1; | |
279 | } | |
280 | ||
3b1d357b KS |
281 | /* |
282 | **************************** NET PROTOCOL cons *************************** | |
283 | */ | |
3b1d357b KS |
284 | /* |
285 | * NAME: cons_init() | |
286 | * CALLED FROM: | |
287 | * autoconf | |
288 | * FUNCTION: | |
289 | * initialize the protocol | |
290 | */ | |
291 | cons_init() | |
292 | { | |
194a383a | 293 | int tp_incoming(), clnp_incoming(); |
3b1d357b | 294 | |
194a383a KS |
295 | |
296 | CLNP_proto = pffindproto(AF_ISO, ISOPROTO_CLNP, SOCK_DGRAM); | |
297 | X25_proto = pffindproto(AF_ISO, ISOPROTO_X25, SOCK_STREAM); | |
298 | TP_proto = pffindproto(AF_ISO, ISOPROTO_TP0, SOCK_SEQPACKET); | |
3b1d357b | 299 | IFDEBUG(D_CCONS) |
194a383a KS |
300 | printf("cons_init end : cnlp_proto 0x%x cons proto 0x%x tp proto 0x%x\n", |
301 | CLNP_proto, X25_proto, TP_proto); | |
3b1d357b | 302 | ENDDEBUG |
3b1d357b | 303 | #ifdef notdef |
194a383a KS |
304 | pk_protolisten(0x81, 0, clnp_incoming); |
305 | pk_protolisten(0x82, 0, esis_incoming); | |
306 | pk_protolisten(0x84, 0, tp8878_A_incoming); | |
194a383a | 307 | pk_protolisten(0, 0, tp_incoming); |
0d1c7f4b | 308 | #endif |
3b1d357b KS |
309 | } |
310 | ||
57c32df9 | 311 | tp_incoming(lcp, m) |
194a383a | 312 | struct pklcd *lcp; |
57c32df9 | 313 | register struct mbuf *m; |
194a383a | 314 | { |
194a383a | 315 | register struct isopcb *isop; |
194a383a | 316 | int cons_tpinput(); |
3b1d357b | 317 | |
01acbfa1 | 318 | if (iso_pcballoc((struct socket *)0, &tp_isopcb)) { |
57c32df9 | 319 | pk_close(lcp); |
194a383a KS |
320 | return; |
321 | } | |
01acbfa1 | 322 | isop = tp_isopcb.isop_next; |
194a383a KS |
323 | lcp->lcd_upper = cons_tpinput; |
324 | lcp->lcd_upnext = (caddr_t)isop; | |
57c32df9 | 325 | lcp->lcd_send(lcp); /* Confirms call */ |
194a383a KS |
326 | isop->isop_chan = (caddr_t)lcp; |
327 | isop->isop_laddr = &isop->isop_sladdr; | |
328 | isop->isop_faddr = &isop->isop_sfaddr; | |
329 | DTEtoNSAP(isop->isop_laddr, &lcp->lcd_laddr); | |
330 | DTEtoNSAP(isop->isop_faddr, &lcp->lcd_faddr); | |
01acbfa1 | 331 | parse_facil(lcp, isop, &(mtod(m, struct x25_packet *)->packet_data), |
194a383a | 332 | m->m_pkthdr.len - PKHEADERLN); |
194a383a KS |
333 | } |
334 | ||
335 | cons_tpinput(lcp, m0) | |
336 | struct mbuf *m0; | |
337 | struct pklcd *lcp; | |
338 | { | |
339 | register struct isopcb *isop = (struct isopcb *)lcp->lcd_upnext; | |
340 | register struct x25_packet *xp; | |
01acbfa1 | 341 | int cmd, ptype = CLEAR; |
3b1d357b | 342 | |
dfcea4ca KS |
343 | if (isop == 0) |
344 | return; | |
01acbfa1 | 345 | if (m0 == 0) |
0d1c7f4b | 346 | goto dead; |
194a383a KS |
347 | switch(m0->m_type) { |
348 | case MT_DATA: | |
349 | case MT_OOBDATA: | |
01acbfa1 | 350 | tpcons_input(m0, isop->isop_faddr, isop->isop_laddr, (caddr_t)lcp); |
0570df3c | 351 | return; |
194a383a KS |
352 | |
353 | case MT_CONTROL: | |
01acbfa1 | 354 | switch (ptype = pk_decode(mtod(m0, struct x25_packet *))) { |
194a383a KS |
355 | |
356 | case RR: | |
357 | cmd = PRC_CONS_SEND_DONE; | |
3b1d357b | 358 | break; |
194a383a | 359 | |
dfcea4ca KS |
360 | case CALL_ACCEPTED: |
361 | if (lcp->lcd_sb.sb_mb) | |
362 | lcp->lcd_send(lcp); /* XXX - fix this */ | |
0570df3c KS |
363 | /*FALLTHROUGH*/ |
364 | default: | |
365 | return; | |
dfcea4ca | 366 | |
0d1c7f4b | 367 | dead: |
0d1c7f4b KS |
368 | case CLEAR: |
369 | case CLEAR_CONF: | |
01acbfa1 KS |
370 | lcp->lcd_upper = 0; |
371 | lcp->lcd_upnext = 0; | |
372 | isop->isop_chan = 0; | |
373 | case RESET: | |
194a383a | 374 | cmd = PRC_ROUTEDEAD; |
3b1d357b | 375 | } |
194a383a | 376 | tpcons_ctlinput(cmd, isop->isop_faddr, isop); |
01acbfa1 KS |
377 | if (cmd = PRC_ROUTEDEAD && isop->isop_refcnt == 0) |
378 | iso_pcbdetach(isop); | |
3b1d357b | 379 | } |
3b1d357b KS |
380 | } |
381 | ||
382 | /* | |
194a383a | 383 | * NAME: cons_connect() |
3b1d357b | 384 | * CALLED FROM: |
194a383a KS |
385 | * tpcons_pcbconnect() when opening a new connection. |
386 | * FUNCTION anD ARGUMENTS: | |
387 | * Figures out which device to use, finding a route if one doesn't | |
388 | * already exist. | |
389 | * RETURN VALUE: | |
390 | * returns E* | |
3b1d357b | 391 | */ |
194a383a KS |
392 | cons_connect(isop) |
393 | register struct isopcb *isop; | |
3b1d357b | 394 | { |
194a383a KS |
395 | register struct pklcd *lcp = (struct pklcd *)isop->isop_chan; |
396 | register struct mbuf *m; | |
397 | struct ifaddr *ifa; | |
57c32df9 | 398 | int error; |
3b1d357b | 399 | |
194a383a KS |
400 | IFDEBUG(D_CCONN) |
401 | printf("cons_connect(0x%x): ", isop); | |
402 | dump_isoaddr(isop->isop_faddr); | |
403 | printf("myaddr: "); | |
404 | dump_isoaddr(isop->isop_laddr); | |
405 | printf("\n" ); | |
406 | ENDDEBUG | |
407 | NSAPtoDTE(isop->isop_faddr, &lcp->lcd_faddr); | |
dfcea4ca KS |
408 | lcp->lcd_upper = cons_tpinput; |
409 | lcp->lcd_upnext = (caddr_t)isop; | |
194a383a KS |
410 | IFDEBUG(D_CCONN) |
411 | printf( | |
412 | "calling make_partial_x25_packet( 0x%x, 0x%x, 0x%x)\n", | |
413 | &lcp->lcd_faddr, &lcp->lcd_laddr, | |
414 | isop->isop_socket->so_proto->pr_protocol); | |
415 | ENDDEBUG | |
57c32df9 KS |
416 | if ((error = make_partial_x25_packet(isop, lcp, m)) == 0) |
417 | error = pk_connect(lcp, &lcp->lcd_faddr); | |
418 | return error; | |
3b1d357b KS |
419 | } |
420 | ||
421 | /* | |
194a383a | 422 | **************************** DEVICE cons *************************** |
3b1d357b | 423 | */ |
3b1d357b | 424 | |
3b1d357b KS |
425 | |
426 | /* | |
194a383a | 427 | * NAME: cons_ctlinput() |
3b1d357b | 428 | * CALLED FROM: |
194a383a KS |
429 | * lower layer when ECN_CLEAR occurs : this routine is here |
430 | * for consistency - cons subnet service calls its higher layer | |
431 | * through the protosw entry. | |
432 | * FUNCTION & ARGUMENTS: | |
433 | * cmd is a PRC_* command, list found in ../sys/protosw.h | |
434 | * copcb is the obvious. | |
435 | * This serves the higher-layer cons service. | |
436 | * NOTE: this takes 3rd arg. because cons uses it to inform itself | |
437 | * of things (timeouts, etc) but has a pcb instead of an address. | |
3b1d357b | 438 | */ |
194a383a KS |
439 | cons_ctlinput(cmd, sa, copcb) |
440 | int cmd; | |
441 | struct sockaddr *sa; | |
442 | register struct pklcd *copcb; | |
3b1d357b | 443 | { |
3b1d357b | 444 | } |
3b1d357b | 445 | |
3b1d357b | 446 | |
194a383a KS |
447 | find_error_reason( xp ) |
448 | register struct x25_packet *xp; | |
449 | { | |
450 | extern u_char x25_error_stats[]; | |
451 | int error, cause; | |
3b1d357b | 452 | |
194a383a KS |
453 | if (xp) { |
454 | cause = 4[(char *)xp]; | |
455 | switch (cause) { | |
456 | case 0x00: | |
457 | case 0x80: | |
458 | /* DTE originated; look at the diagnostic */ | |
459 | error = (CONL_ERROR_MASK | cause); | |
460 | goto done; | |
3b1d357b | 461 | |
194a383a KS |
462 | case 0x01: /* number busy */ |
463 | case 0x81: | |
464 | case 0x09: /* Out of order */ | |
465 | case 0x89: | |
466 | case 0x11: /* Remot Procedure Error */ | |
467 | case 0x91: | |
468 | case 0x19: /* reverse charging accept not subscribed */ | |
469 | case 0x99: | |
470 | case 0x21: /* Incampat destination */ | |
471 | case 0xa1: | |
472 | case 0x29: /* fast select accept not subscribed */ | |
473 | case 0xa9: | |
474 | case 0x39: /* ship absent */ | |
475 | case 0xb9: | |
476 | case 0x03: /* invalid facil request */ | |
477 | case 0x83: | |
478 | case 0x0b: /* access barred */ | |
479 | case 0x8b: | |
480 | case 0x13: /* local procedure error */ | |
481 | case 0x93: | |
482 | case 0x05: /* network congestion */ | |
483 | case 0x85: | |
484 | case 0x8d: /* not obtainable */ | |
485 | case 0x0d: | |
486 | case 0x95: /* RPOA out of order */ | |
487 | case 0x15: | |
488 | /* take out bit 8 | |
489 | * so we don't have to have so many perror entries | |
490 | */ | |
491 | error = (CONL_ERROR_MASK | 0x100 | (cause & ~0x80)); | |
492 | goto done; | |
3b1d357b | 493 | |
194a383a KS |
494 | case 0xc1: /* gateway-detected proc error */ |
495 | case 0xc3: /* gateway congestion */ | |
3b1d357b | 496 | |
194a383a KS |
497 | error = (CONL_ERROR_MASK | 0x100 | cause); |
498 | goto done; | |
499 | } | |
500 | } | |
501 | /* otherwise, a *hopefully* valid perror exists in the e_reason field */ | |
502 | error = xp->packet_data; | |
503 | if (error = 0) { | |
504 | printf("Incoming PKT TYPE 0x%x with reason 0x%x\n", | |
505 | pk_decode(xp), | |
506 | cause); | |
507 | error = E_CO_HLI_DISCA; | |
508 | } | |
3b1d357b | 509 | |
194a383a KS |
510 | done: |
511 | return error; | |
512 | } | |
3b1d357b | 513 | |
3b1d357b | 514 | |
3b1d357b | 515 | |
4d8170e5 | 516 | #endif /* KERNEL */ |
3b1d357b KS |
517 | |
518 | /* | |
519 | * NAME: make_partial_x25_packet() | |
520 | * | |
521 | * FUNCTION and ARGUMENTS: | |
194a383a | 522 | * Makes part of an X.25 call packet, for use by x25. |
3b1d357b | 523 | * (src) and (dst) are the NSAP-addresses of source and destination. |
3b1d357b KS |
524 | * (buf) is a ptr to a buffer into which to write this partial header. |
525 | * | |
194a383a KS |
526 | * 0 Facility length (in octets) |
527 | * 1 Facility field, which is a set of: | |
3b1d357b KS |
528 | * m facil code |
529 | * m+1 facil param len (for >2-byte facilities) in octets | |
530 | * m+2..p facil param field | |
531 | * q user data (protocol identification octet) | |
532 | * | |
533 | * | |
534 | * RETURNS: | |
535 | * 0 if OK | |
536 | * E* if failed. | |
194a383a KS |
537 | * |
538 | * SIDE EFFECTS: | |
539 | * Stores facilites mbuf in X.25 control block, where the connect | |
540 | * routine knows where to look for it. | |
3b1d357b KS |
541 | */ |
542 | ||
543 | #ifdef X25_1984 | |
544 | int cons_use_facils = 1; | |
4d8170e5 | 545 | #else /* X25_1984 */ |
3b1d357b | 546 | int cons_use_facils = 0; |
4d8170e5 | 547 | #endif /* X25_1984 */ |
3b1d357b KS |
548 | |
549 | int cons_use_udata = 1; /* KLUDGE FOR DEBUGGING */ | |
550 | ||
551 | Static int | |
194a383a KS |
552 | make_partial_x25_packet(isop, lcp) |
553 | struct isopcb *isop; | |
554 | struct pklcd *lcp; | |
3b1d357b | 555 | { |
3b1d357b KS |
556 | u_int proto; |
557 | int flag; | |
194a383a | 558 | caddr_t buf; |
0d1c7f4b | 559 | register caddr_t ptr; |
3b1d357b KS |
560 | register int len = 0; |
561 | int buflen =0; | |
562 | caddr_t facil_len; | |
563 | int oddness = 0; | |
194a383a | 564 | struct mbuf *m; |
3b1d357b KS |
565 | |
566 | ||
0570df3c KS |
567 | IFDEBUG(D_CCONN) |
568 | printf("make_partial_x25_packet(0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n", | |
569 | isop->isop_laddr, isop->isop_faddr, proto, m, flag); | |
570 | ENDDEBUG | |
571 | if (cons_use_udata) { | |
572 | if (isop->isop_x25crud_len > 0) { | |
573 | /* | |
574 | * The user specified something. Stick it in | |
575 | */ | |
576 | bcopy(isop->isop_x25crud, lcp->lcd_faddr.x25_udata, | |
577 | isop->isop_x25crud_len); | |
578 | lcp->lcd_faddr.x25_udlen = isop->isop_x25crud_len; | |
579 | } | |
580 | } | |
581 | ||
582 | if (cons_use_facils == 0) { | |
583 | lcp->lcd_facilities = 0; | |
584 | return 0; | |
585 | } | |
57c32df9 | 586 | MGETHDR(m, MT_DATA, M_WAITOK); |
194a383a KS |
587 | if (m == 0) |
588 | return ENOBUFS; | |
589 | buf = mtod(m, caddr_t); | |
0d1c7f4b | 590 | ptr = buf; |
3b1d357b | 591 | |
3b1d357b KS |
592 | /* ptr now points to facil length (len of whole facil field in OCTETS */ |
593 | facil_len = ptr ++; | |
57c32df9 KS |
594 | m->m_len = 0; |
595 | pk_build_facilities(m, &lcp->lcd_faddr, 0); | |
3b1d357b KS |
596 | |
597 | IFDEBUG(D_CADDR) | |
598 | printf("make_partial calling: ptr 0x%x, len 0x%x\n", ptr, | |
194a383a | 599 | isop->isop_laddr->siso_addr.isoa_len); |
3b1d357b | 600 | ENDDEBUG |
194a383a | 601 | if (cons_use_facils) { |
57c32df9 KS |
602 | *ptr++ = 0; /* Marker to separate X.25 facitilies from CCITT ones */ |
603 | *ptr++ = 0x0f; | |
3b1d357b KS |
604 | *ptr = 0xcb; /* calling facility code */ |
605 | ptr ++; | |
606 | ptr ++; /* leave room for facil param len (in OCTETS + 1) */ | |
607 | ptr ++; /* leave room for the facil param len (in nibbles), | |
57c32df9 KS |
608 | * high two bits of which indicate full/partial NSAP |
609 | */ | |
194a383a KS |
610 | len = isop->isop_laddr->siso_addr.isoa_len; |
611 | bcopy( isop->isop_laddr->siso_data, ptr, len); | |
0570df3c | 612 | *(ptr-2) = len+1; /* facil param len in octets */ |
3b1d357b KS |
613 | *(ptr-1) = len<<1; /* facil param len in nibbles */ |
614 | ptr += len; | |
615 | ||
616 | IFDEBUG(D_CADDR) | |
617 | printf("make_partial called: ptr 0x%x, len 0x%x\n", ptr, | |
194a383a | 618 | isop->isop_faddr->siso_addr.isoa_len); |
3b1d357b KS |
619 | ENDDEBUG |
620 | *ptr = 0xc9; /* called facility code */ | |
621 | ptr ++; | |
622 | ptr ++; /* leave room for facil param len (in OCTETS + 1) */ | |
623 | ptr ++; /* leave room for the facil param len (in nibbles), | |
57c32df9 KS |
624 | * high two bits of which indicate full/partial NSAP |
625 | */ | |
194a383a KS |
626 | len = isop->isop_faddr->siso_nlen; |
627 | bcopy(isop->isop_faddr->siso_data, ptr, len); | |
0570df3c | 628 | *(ptr-2) = len+1; /* facil param len = addr len + 1 for each of these |
3b1d357b KS |
629 | * two length fields, in octets */ |
630 | *(ptr-1) = len<<1; /* facil param len in nibbles */ | |
631 | ptr += len; | |
632 | ||
633 | } | |
634 | *facil_len = ptr - facil_len - 1; | |
194a383a | 635 | if (*facil_len > MAX_FACILITIES) |
3b1d357b KS |
636 | return E_CO_PNA_LONG; |
637 | ||
3b1d357b KS |
638 | buflen = (int)(ptr - buf); |
639 | ||
640 | IFDEBUG(D_CDUMP_REQ) | |
641 | register int i; | |
642 | ||
643 | printf("ECN_CONNECT DATA buf 0x%x len %d (0x%x)\n", | |
644 | buf, buflen, buflen); | |
645 | for( i=0; i < buflen; ) { | |
646 | printf("+%d: %x %x %x %x %x %x %x %x\n", | |
647 | i, | |
648 | *(buf+i), *(buf+i+1), *(buf+i+2), *(buf+i+3), | |
649 | *(buf+i+4), *(buf+i+5), *(buf+i+6), *(buf+i+7)); | |
650 | i+=8; | |
651 | } | |
652 | ENDDEBUG | |
653 | IFDEBUG(D_CADDR) | |
654 | printf("make_partial returns buf 0x%x size 0x%x bytes\n", | |
655 | mtod(m, caddr_t), buflen); | |
656 | ENDDEBUG | |
657 | ||
194a383a | 658 | if (buflen > MHLEN) |
3b1d357b KS |
659 | return E_CO_PNA_LONG; |
660 | ||
57c32df9 | 661 | m->m_pkthdr.len = m->m_len = buflen; |
194a383a | 662 | lcp->lcd_facilities = m; |
3b1d357b KS |
663 | return 0; |
664 | } | |
665 | ||
666 | /* | |
667 | * NAME: NSAPtoDTE() | |
668 | * CALLED FROM: | |
669 | * make_partial_x25_packet() | |
670 | * FUNCTION and ARGUMENTS: | |
671 | * get a DTE address from an NSAP-address (struct sockaddr_iso) | |
672 | * (dst_octet) is the octet into which to begin stashing the DTE addr | |
673 | * (dst_nibble) takes 0 or 1. 1 means begin filling in the DTE addr | |
674 | * in the high-order nibble of dst_octet. 0 means low-order nibble. | |
675 | * (addr) is the NSAP-address | |
676 | * (flag) is true if the transport suffix is to become the | |
677 | * last two digits of the DTE address | |
194a383a | 678 | * A DTE address is a series of ASCII digits |
3b1d357b KS |
679 | * |
680 | * A DTE address may have leading zeros. The are significant. | |
681 | * 1 digit per nibble, may be an odd number of nibbles. | |
682 | * | |
683 | * An NSAP-address has the DTE address in the IDI. Leading zeros are | |
684 | * significant. Trailing hex f indicates the end of the DTE address. | |
194a383a | 685 | * The IDI is a series of BCD digits, one per nibble. |
3b1d357b KS |
686 | * |
687 | * RETURNS | |
688 | * # significant digits in the DTE address, -1 if error. | |
689 | */ | |
690 | ||
691 | Static int | |
194a383a KS |
692 | NSAPtoDTE(siso, sx25) |
693 | register struct sockaddr_iso *siso; | |
694 | register struct sockaddr_x25 *sx25; | |
3b1d357b | 695 | { |
194a383a | 696 | int dtelen = -1; |
3b1d357b KS |
697 | |
698 | IFDEBUG(D_CADDR) | |
194a383a | 699 | printf("NSAPtoDTE: nsap: %s\n", clnp_iso_addrp(&siso->siso_addr)); |
3b1d357b KS |
700 | ENDDEBUG |
701 | ||
194a383a KS |
702 | if (siso->siso_data[0] == AFI_37) { |
703 | register char *out = sx25->x25_addr; | |
704 | register char *in = siso->siso_data + 1; | |
705 | register int nibble; | |
0d1c7f4b KS |
706 | char *lim = siso->siso_data + siso->siso_nlen; |
707 | char *olim = out+15; | |
194a383a | 708 | int lowNibble = 0; |
3b1d357b | 709 | |
194a383a KS |
710 | while (in < lim) { |
711 | nibble = ((lowNibble ? *in++ : (*in >> 4)) & 0xf) | 0x30; | |
712 | lowNibble ^= 1; | |
0d1c7f4b | 713 | if (nibble != 0x3f && out < olim) |
194a383a KS |
714 | *out++ = nibble; |
715 | } | |
716 | dtelen = out - sx25->x25_addr; | |
717 | *out++ = 0; | |
718 | } else { | |
194a383a | 719 | /* error = iso_8208snparesolve(addr, x121string, &x121strlen);*/ |
01acbfa1 KS |
720 | register struct rtentry *rt; |
721 | extern struct sockaddr_iso blank_siso; | |
722 | struct sockaddr_iso nsiso; | |
723 | ||
724 | nsiso = blank_siso; | |
725 | bcopy(nsiso.siso_data, siso->siso_data, | |
726 | nsiso.siso_nlen = siso->siso_nlen); | |
727 | if (rt = rtalloc1(&nsiso, 1)) { | |
194a383a KS |
728 | register struct sockaddr_x25 *sxx = |
729 | (struct sockaddr_x25 *)rt->rt_gateway; | |
730 | register char *in = sxx->x25_addr; | |
731 | ||
732 | rt->rt_use--; | |
733 | if (sxx && sxx->x25_family == AF_CCITT) { | |
734 | bcopy(sx25->x25_addr, sxx->x25_addr, sizeof(sx25->x25_addr)); | |
735 | while (*in++) {} | |
736 | dtelen = in - sxx->x25_addr; | |
737 | } | |
738 | } | |
739 | } | |
740 | return dtelen; | |
3b1d357b KS |
741 | } |
742 | ||
743 | /* | |
744 | * NAME: FACILtoNSAP() | |
745 | * CALLED FROM: | |
746 | * parse_facil() | |
747 | * FUNCTION and ARGUMENTS: | |
748 | * Creates and NSAP in the sockaddr_iso (addr) from the | |
194a383a | 749 | * x.25 facility found at buf - 1. |
3b1d357b | 750 | * RETURNS: |
01acbfa1 | 751 | * 0 if ok, -1 if error. |
3b1d357b KS |
752 | */ |
753 | ||
754 | Static int | |
194a383a | 755 | FACILtoNSAP(addr, buf) |
01acbfa1 | 756 | register u_char *buf; |
3b1d357b KS |
757 | register struct sockaddr_iso *addr; |
758 | { | |
01acbfa1 KS |
759 | int len_in_nibbles = *++buf & 0x3f; |
760 | u_char buf_len = (len_in_nibbles + 1) >> 1;; /* in bytes */ | |
3b1d357b KS |
761 | |
762 | IFDEBUG(D_CADDR) | |
763 | printf("FACILtoNSAP( 0x%x, 0x%x, 0x%x )\n", | |
764 | buf, buf_len, addr ); | |
765 | ENDDEBUG | |
766 | ||
194a383a | 767 | len_in_nibbles = *buf & 0x3f; |
3b1d357b KS |
768 | /* despite the fact that X.25 makes us put a length in nibbles |
769 | * here, the NSAP-addrs are always in full octets | |
770 | */ | |
194a383a KS |
771 | switch (*buf++ & 0xc0) { |
772 | case 0: | |
773 | /* Entire OSI NSAP address */ | |
774 | bcopy((caddr_t)buf, addr->siso_data, addr->siso_nlen = buf_len); | |
775 | break; | |
3b1d357b | 776 | |
194a383a KS |
777 | case 40: |
778 | /* Partial OSI NSAP address, assume trailing */ | |
779 | if (buf_len + addr->siso_nlen > sizeof(addr->siso_addr)) | |
780 | return -1; | |
781 | bcopy((caddr_t)buf, TSEL(addr), buf_len); | |
782 | addr->siso_nlen += buf_len; | |
783 | break; | |
3b1d357b | 784 | |
194a383a KS |
785 | default: |
786 | /* Rather than blow away the connection, just ignore and use | |
787 | NSAP from DTE */; | |
3b1d357b | 788 | } |
01acbfa1 | 789 | return 0; |
194a383a | 790 | } |
3b1d357b | 791 | |
01acbfa1 | 792 | Static |
194a383a KS |
793 | init_siso(siso) |
794 | register struct sockaddr_iso *siso; | |
795 | { | |
796 | siso->siso_len = sizeof (*siso); | |
797 | siso->siso_family = AF_ISO; | |
798 | siso->siso_data[0] = AFI_37; | |
799 | siso->siso_nlen = 8; | |
3b1d357b KS |
800 | } |
801 | ||
802 | /* | |
803 | * NAME: DTEtoNSAP() | |
804 | * CALLED FROM: | |
805 | * parse_facil() | |
806 | * FUNCTION and ARGUMENTS: | |
807 | * Creates a type 37 NSAP in the sockaddr_iso (addr) | |
194a383a | 808 | * from a DTE address found in a sockaddr_x25. |
3b1d357b KS |
809 | * |
810 | * RETURNS: | |
811 | * 0 if ok; E* otherwise. | |
812 | */ | |
813 | ||
814 | Static int | |
194a383a | 815 | DTEtoNSAP(addr, sx) |
3b1d357b | 816 | struct sockaddr_iso *addr; |
194a383a | 817 | struct sockaddr_x25 *sx; |
3b1d357b | 818 | { |
194a383a KS |
819 | register char *in, *out; |
820 | register int first; | |
821 | int pad_tail = 0; | |
822 | int src_len; | |
3b1d357b | 823 | |
3b1d357b | 824 | |
194a383a | 825 | init_siso(addr); |
194a383a | 826 | in = sx->x25_addr; |
01acbfa1 KS |
827 | src_len = strlen(in); |
828 | addr->siso_nlen = (src_len + 3) / 2; | |
829 | out = addr->siso_data; | |
830 | *out++ = 0x37; | |
831 | if (src_len & 1) { | |
194a383a KS |
832 | pad_tail = 0xf; |
833 | src_len++; | |
834 | } | |
01acbfa1 KS |
835 | for (first = 0; src_len > 0; src_len--) { |
836 | first |= 0xf & *in++; | |
194a383a KS |
837 | if (src_len & 1) { |
838 | *out++ = first; | |
839 | first = 0; | |
840 | } | |
841 | else first <<= 4; | |
842 | } | |
843 | if (pad_tail) | |
844 | out[-1] |= 0xf; | |
3b1d357b KS |
845 | return 0; /* ok */ |
846 | } | |
847 | ||
848 | /* | |
849 | * FUNCTION and ARGUMENTS: | |
850 | * parses (buf_len) bytes beginning at (buf) and finds | |
851 | * a called nsap, a calling nsap, and protocol identifier. | |
852 | * RETURNS: | |
853 | * 0 if ok, E* otherwise. | |
854 | */ | |
855 | ||
01acbfa1 | 856 | Static int |
194a383a | 857 | parse_facil(lcp, isop, buf, buf_len) |
3b1d357b KS |
858 | caddr_t buf; |
859 | u_char buf_len; /* in bytes */ | |
194a383a KS |
860 | struct isopcb *isop; |
861 | struct pklcd *lcp; | |
3b1d357b KS |
862 | { |
863 | register int i; | |
194a383a KS |
864 | register u_char *ptr = (u_char *)buf; |
865 | u_char *ptr_lim, *facil_lim; | |
866 | int facil_param_len, facil_len; | |
3b1d357b KS |
867 | |
868 | IFDEBUG(D_CADDR) | |
194a383a | 869 | printf("parse_facil(0x%x, 0x%x, 0x%x, 0x%x)\n", |
01acbfa1 | 870 | lcp, isop, buf, buf_len); |
3b1d357b KS |
871 | dump_buf(buf, buf_len); |
872 | ENDDEBUG | |
873 | ||
874 | /* find the beginnings of the facility fields in buf | |
875 | * by skipping over the called & calling DTE addresses | |
876 | * i <- # nibbles in called + # nibbles in calling | |
877 | * i += 1 so that an odd nibble gets rounded up to even | |
878 | * before dividing by 2, then divide by two to get # octets | |
879 | */ | |
194a383a | 880 | i = (int)(*ptr >> 4) + (int)(*ptr&0xf); |
3b1d357b | 881 | i++; |
194a383a | 882 | ptr += i >> 1; |
3b1d357b KS |
883 | ptr ++; /* plus one for the DTE lengths byte */ |
884 | ||
885 | /* ptr now is at facil_length field */ | |
194a383a KS |
886 | facil_len = *ptr++; |
887 | facil_lim = ptr + facil_len; | |
3b1d357b | 888 | IFDEBUG(D_CADDR) |
194a383a | 889 | printf("parse_facils: facil length is 0x%x\n", (int) facil_len); |
3b1d357b KS |
890 | ENDDEBUG |
891 | ||
01acbfa1 | 892 | while (ptr < facil_lim) { |
3b1d357b | 893 | /* get NSAP addresses from facilities */ |
194a383a | 894 | switch (*ptr++) { |
3b1d357b | 895 | case 0xcb: |
194a383a KS |
896 | /* calling NSAP */ |
897 | facil_param_len = FACILtoNSAP(isop->isop_faddr, ptr); | |
3b1d357b KS |
898 | break; |
899 | case 0xc9: | |
194a383a KS |
900 | /* called NSAP */ |
901 | facil_param_len = FACILtoNSAP(isop->isop_laddr, ptr); | |
3b1d357b KS |
902 | break; |
903 | ||
904 | /* from here to default are legit cases that I ignore */ | |
3b1d357b KS |
905 | /* variable length */ |
906 | case 0xca: /* end-to-end transit delay negot */ | |
907 | case 0xc6: /* network user id */ | |
908 | case 0xc5: /* charging info : indicating monetary unit */ | |
909 | case 0xc2: /* charging info : indicating segment count */ | |
910 | case 0xc1: /* charging info : indicating call duration */ | |
911 | case 0xc4: /* RPOA extended format */ | |
912 | case 0xc3: /* call redirection notification */ | |
913 | facil_param_len = 0; | |
3b1d357b KS |
914 | break; |
915 | ||
916 | /* 1 octet */ | |
917 | case 0x0a: /* min. throughput class negot */ | |
918 | case 0x02: /* throughput class */ | |
919 | case 0x03: case 0x47: /* CUG shit */ | |
920 | case 0x0b: /* expedited data negot */ | |
921 | case 0x01: /* Fast select or reverse charging | |
922 | (example of intelligent protocol design) */ | |
923 | case 0x04: /* charging info : requesting service */ | |
924 | case 0x08: /* called line addr modified notification */ | |
01acbfa1 | 925 | case 0x00: /* marker to indicate beginning of CCITT facils */ |
3b1d357b | 926 | facil_param_len = 1; |
3b1d357b KS |
927 | break; |
928 | ||
929 | /* any 2 octets */ | |
930 | case 0x42: /* pkt size */ | |
931 | case 0x43: /* win size */ | |
932 | case 0x44: /* RPOA basic format */ | |
933 | case 0x41: /* bilateral CUG shit */ | |
934 | case 0x49: /* transit delay selection and indication */ | |
935 | facil_param_len = 2; | |
3b1d357b KS |
936 | break; |
937 | ||
3b1d357b | 938 | default: |
3b1d357b | 939 | printf( |
01acbfa1 KS |
940 | "BOGUS FACILITY CODE facil_lim 0x%x facil_len %d, ptr 0x%x *ptr 0x%x\n", |
941 | facil_lim, facil_len, ptr - 1, ptr[-1]); | |
942 | /* facil that we don't handle | |
943 | return E_CO_HLI_REJI; */ | |
944 | switch (ptr[-1] & 0xc0) { | |
945 | case 0x00: facil_param_len = 1; break; | |
946 | case 0x40: facil_param_len = 2; break; | |
947 | case 0x80: facil_param_len = 3; break; | |
948 | case 0xc0: facil_param_len = 0; break; | |
949 | } | |
3b1d357b | 950 | } |
194a383a KS |
951 | if (facil_param_len == -1) |
952 | return E_CO_REG_ICDA; | |
953 | if (facil_param_len == 0) /* variable length */ | |
01acbfa1 | 954 | facil_param_len = (int)*ptr++; /* 1 + the real facil param */ |
3b1d357b KS |
955 | ptr += facil_param_len; |
956 | } | |
3b1d357b KS |
957 | return 0; |
958 | } | |
959 | ||
4d8170e5 | 960 | #endif /* TPCONS */ |