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1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | * | |
01acbfa1 | 7 | * @(#)if_cons.c 7.11 (Berkeley) %G% |
7bcd1bb8 KB |
8 | */ |
9 | ||
3b1d357b KS |
10 | /*********************************************************** |
11 | Copyright IBM Corporation 1987 | |
12 | ||
13 | All Rights Reserved | |
14 | ||
15 | Permission to use, copy, modify, and distribute this software and its | |
16 | documentation for any purpose and without fee is hereby granted, | |
17 | provided that the above copyright notice appear in all copies and that | |
18 | both that copyright notice and this permission notice appear in | |
19 | supporting documentation, and that the name of IBM not be | |
20 | used in advertising or publicity pertaining to distribution of the | |
21 | software without specific, written prior permission. | |
22 | ||
23 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
24 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
25 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
26 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
27 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
28 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
29 | SOFTWARE. | |
30 | ||
31 | ******************************************************************/ | |
32 | ||
33 | /* | |
34 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
35 | */ | |
36 | /* | |
37 | * $Header: if_cons.c,v 4.7 88/08/11 15:52:55 nhall Exp $ | |
38 | * $Source: /usr/argo/sys/netiso/RCS/if_cons.c,v $ | |
39 | * | |
40 | * cons.c - Connection Oriented Network Service: | |
41 | * including support for a) user transport-level service, | |
42 | * b) COSNS below CLNP, and c) CONS below TP. | |
194a383a | 43 | */ |
3b1d357b | 44 | |
194a383a KS |
45 | #ifdef TPCONS |
46 | #ifdef KERNEL | |
3b1d357b KS |
47 | #ifdef ARGO_DEBUG |
48 | #define Static | |
49 | unsigned LAST_CALL_PCB; | |
50 | #else ARGO_DEBUG | |
51 | #define Static static | |
52 | #endif ARGO_DEBUG | |
53 | ||
3b1d357b | 54 | |
3b1d357b | 55 | |
194a383a | 56 | #ifndef SOCK_STREAM |
3b1d357b KS |
57 | #include "param.h" |
58 | #include "systm.h" | |
59 | #include "mbuf.h" | |
60 | #include "protosw.h" | |
61 | #include "socket.h" | |
62 | #include "socketvar.h" | |
63 | #include "errno.h" | |
64 | #include "ioctl.h" | |
c3e97825 | 65 | #include "tsleep.h" |
3b1d357b KS |
66 | |
67 | #include "../net/if.h" | |
68 | #include "../net/netisr.h" | |
69 | #include "../net/route.h" | |
70 | ||
194a383a KS |
71 | #include "iso_errno.h" |
72 | #include "argo_debug.h" | |
73 | #include "tp_trace.h" | |
74 | #include "iso.h" | |
75 | #include "cons.h" | |
76 | #include "iso_pcb.h" | |
77 | ||
78 | #include "../netccitt/x25.h" | |
79 | #include "../netccitt/pk.h" | |
80 | #include "../netccitt/pk_var.h" | |
81 | #endif | |
3b1d357b KS |
82 | |
83 | #ifdef ARGO_DEBUG | |
84 | #define MT_XCONN 0x50 | |
85 | #define MT_XCLOSE 0x51 | |
86 | #define MT_XCONFIRM 0x52 | |
87 | #define MT_XDATA 0x53 | |
88 | #define MT_XHEADER 0x54 | |
89 | #else | |
90 | #define MT_XCONN MT_DATA | |
91 | #define MT_XCLOSE MT_DATA | |
92 | #define MT_XCONFIRM MT_DATA | |
93 | #define MT_XDATA MT_DATA | |
94 | #define MT_XHEADER MT_HEADER | |
95 | #endif ARGO_DEBUG | |
96 | ||
97 | #define DONTCLEAR -1 | |
98 | ||
99 | /********************************************************************* | |
194a383a | 100 | * cons.c - CONS interface to the x.25 layer |
3b1d357b KS |
101 | * |
102 | * TODO: figure out what resources we might run out of besides mbufs. | |
103 | * If we run out of any of them (including mbufs) close and recycle | |
104 | * lru x% of the connections, for some parameter x. | |
105 | * | |
194a383a | 106 | * There are 2 interfaces from above: |
3b1d357b KS |
107 | * 1) from TP0: |
108 | * cons CO network service | |
109 | * TP associates a transport connection with a network connection. | |
110 | * cons_output( isop, m, len, isdgm==0 ) | |
111 | * co_flags == 0 | |
194a383a | 112 | * 2) from TP4: |
3b1d357b KS |
113 | * It's a datagram service, like clnp is. - even though it calls |
114 | * cons_output( isop, m, len, isdgm==1 ) | |
115 | * it eventually goes through | |
116 | * cosns_output(ifp, m, dst). | |
117 | * TP4 permits multiplexing (reuse, possibly simultaneously) of the | |
118 | * network connections. | |
119 | * This means that many sockets (many tpcbs) may be associated with | |
194a383a | 120 | * this pklcd, hence cannot have a back ptr from pklcd to a tpcb. |
3b1d357b | 121 | * co_flags & CONSF_DGM |
194a383a | 122 | * co_socket is null since there may be many sockets that use this pklcd. |
3b1d357b KS |
123 | * |
124 | NOTE: | |
125 | streams would really be nice. sigh. | |
3b1d357b KS |
126 | NOTE: |
127 | PVCs could be handled by config-ing a cons with an address and with the | |
128 | IFF_POINTTOPOINT flag on. This code would then have to skip the | |
129 | connection setup stuff for pt-to-pt links. | |
3b1d357b KS |
130 | |
131 | ||
132 | *********************************************************************/ | |
133 | ||
3b1d357b KS |
134 | |
135 | #define CONS_IFQMAXLEN 5 | |
136 | ||
3b1d357b KS |
137 | |
138 | /* protosw pointers for getting to higher layer */ | |
139 | Static struct protosw *CLNP_proto; | |
140 | Static struct protosw *TP_proto; | |
141 | Static struct protosw *X25_proto; | |
142 | Static int issue_clear_req(); | |
143 | ||
144 | #ifndef PHASEONE | |
145 | extern struct ifaddr *ifa_ifwithnet(); | |
146 | #endif PHASEONE | |
147 | ||
148 | extern struct ifaddr *ifa_ifwithaddr(); | |
149 | ||
3b1d357b | 150 | extern struct isopcb tp_isopcb; /* chain of all TP pcbs */ |
3b1d357b | 151 | |
3b1d357b KS |
152 | |
153 | Static int parse_facil(), NSAPtoDTE(), make_partial_x25_packet(); | |
154 | Static int FACILtoNSAP(), DTEtoNSAP(); | |
194a383a | 155 | Static struct pklcd *cons_chan_to_pcb(); |
3b1d357b KS |
156 | |
157 | #define HIGH_NIBBLE 1 | |
158 | #define LOW_NIBBLE 0 | |
159 | ||
160 | /* | |
161 | * NAME: nibble_copy() | |
162 | * FUNCTION and ARGUMENTS: | |
163 | * copies (len) nibbles from (src_octet), high or low nibble | |
164 | * to (dst_octet), high or low nibble, | |
165 | * src_nibble & dst_nibble should be: | |
166 | * HIGH_NIBBLE (1) if leftmost 4 bits/ most significant nibble | |
167 | * LOW_NIBBLE (0) if rightmost 4 bits/ least significant nibble | |
168 | * RETURNS: VOID | |
169 | */ | |
170 | void | |
194a383a | 171 | nibble_copy(src_octet, src_nibble, dst_octet, dst_nibble, len) |
3b1d357b KS |
172 | register char *src_octet; |
173 | register char *dst_octet; | |
174 | register unsigned src_nibble; | |
175 | register unsigned dst_nibble; | |
176 | int len; | |
177 | { | |
178 | ||
179 | register i; | |
180 | register unsigned dshift, sshift; | |
181 | ||
182 | IFDEBUG(D_CADDR) | |
183 | printf("nibble_copy ( 0x%x, 0x%x, 0x%x, 0x%x 0x%x)\n", | |
184 | src_octet, src_nibble, dst_octet, dst_nibble, len); | |
185 | ENDDEBUG | |
186 | #define SHIFT 0x4 | |
187 | ||
188 | dshift = dst_nibble << 2; | |
189 | sshift = src_nibble << 2; | |
190 | ||
191 | for (i=0; i<len; i++) { | |
192 | /* clear dst_nibble */ | |
193 | *dst_octet &= ~(0xf<< dshift); | |
194 | ||
195 | /* set dst nibble */ | |
196 | *dst_octet |= ( 0xf & (*src_octet >> sshift))<< dshift; | |
197 | ||
198 | dshift ^= SHIFT; | |
199 | sshift ^= SHIFT; | |
200 | src_nibble = 1-src_nibble; | |
201 | dst_nibble = 1-dst_nibble; | |
202 | src_octet += src_nibble; | |
203 | dst_octet += dst_nibble; | |
204 | } | |
205 | IFDEBUG(D_CADDR) | |
206 | printf("nibble_copy DONE\n"); | |
207 | ENDDEBUG | |
208 | } | |
209 | ||
210 | /* | |
211 | * NAME: nibble_match() | |
212 | * FUNCTION and ARGUMENTS: | |
213 | * compares src_octet/src_nibble and dst_octet/dst_nibble for len nibbles. | |
214 | * RETURNS: 0 if they differ, 1 if they are the same. | |
215 | */ | |
216 | int | |
217 | nibble_match( src_octet, src_nibble, dst_octet, dst_nibble, len) | |
218 | register char *src_octet; | |
219 | register char *dst_octet; | |
220 | register unsigned src_nibble; | |
221 | register unsigned dst_nibble; | |
222 | int len; | |
223 | { | |
224 | ||
225 | register i; | |
226 | register unsigned dshift, sshift; | |
227 | u_char nibble_a, nibble_b; | |
228 | ||
229 | IFDEBUG(D_CADDR) | |
230 | printf("nibble_match ( 0x%x, 0x%x, 0x%x, 0x%x 0x%x)\n", | |
231 | src_octet, src_nibble, dst_octet, dst_nibble, len); | |
232 | ENDDEBUG | |
233 | #define SHIFT 0x4 | |
234 | ||
235 | dshift = dst_nibble << 2; | |
236 | sshift = src_nibble << 2; | |
237 | ||
238 | for (i=0; i<len; i++) { | |
239 | nibble_b = ((*dst_octet)>>dshift) & 0xf; | |
240 | nibble_a = ( 0xf & (*src_octet >> sshift)); | |
194a383a | 241 | if (nibble_b != nibble_a) |
3b1d357b KS |
242 | return 0; |
243 | ||
244 | dshift ^= SHIFT; | |
245 | sshift ^= SHIFT; | |
246 | src_nibble = 1-src_nibble; | |
247 | dst_nibble = 1-dst_nibble; | |
248 | src_octet += src_nibble; | |
249 | dst_octet += dst_nibble; | |
250 | } | |
251 | IFDEBUG(D_CADDR) | |
252 | printf("nibble_match DONE\n"); | |
253 | ENDDEBUG | |
254 | return 1; | |
255 | } | |
256 | ||
3b1d357b KS |
257 | /* |
258 | **************************** NET PROTOCOL cons *************************** | |
259 | */ | |
3b1d357b KS |
260 | /* |
261 | * NAME: cons_init() | |
262 | * CALLED FROM: | |
263 | * autoconf | |
264 | * FUNCTION: | |
265 | * initialize the protocol | |
266 | */ | |
267 | cons_init() | |
268 | { | |
194a383a | 269 | int tp_incoming(), clnp_incoming(); |
3b1d357b | 270 | |
194a383a KS |
271 | |
272 | CLNP_proto = pffindproto(AF_ISO, ISOPROTO_CLNP, SOCK_DGRAM); | |
273 | X25_proto = pffindproto(AF_ISO, ISOPROTO_X25, SOCK_STREAM); | |
274 | TP_proto = pffindproto(AF_ISO, ISOPROTO_TP0, SOCK_SEQPACKET); | |
3b1d357b | 275 | IFDEBUG(D_CCONS) |
194a383a KS |
276 | printf("cons_init end : cnlp_proto 0x%x cons proto 0x%x tp proto 0x%x\n", |
277 | CLNP_proto, X25_proto, TP_proto); | |
3b1d357b | 278 | ENDDEBUG |
3b1d357b | 279 | #ifdef notdef |
194a383a KS |
280 | pk_protolisten(0x81, 0, clnp_incoming); |
281 | pk_protolisten(0x82, 0, esis_incoming); | |
282 | pk_protolisten(0x84, 0, tp8878_A_incoming); | |
194a383a | 283 | pk_protolisten(0, 0, tp_incoming); |
0d1c7f4b | 284 | #endif |
3b1d357b KS |
285 | } |
286 | ||
57c32df9 | 287 | tp_incoming(lcp, m) |
194a383a | 288 | struct pklcd *lcp; |
57c32df9 | 289 | register struct mbuf *m; |
194a383a | 290 | { |
194a383a | 291 | register struct isopcb *isop; |
194a383a | 292 | int cons_tpinput(); |
3b1d357b | 293 | |
01acbfa1 | 294 | if (iso_pcballoc((struct socket *)0, &tp_isopcb)) { |
57c32df9 | 295 | pk_close(lcp); |
194a383a KS |
296 | return; |
297 | } | |
01acbfa1 | 298 | isop = tp_isopcb.isop_next; |
194a383a KS |
299 | lcp->lcd_upper = cons_tpinput; |
300 | lcp->lcd_upnext = (caddr_t)isop; | |
57c32df9 | 301 | lcp->lcd_send(lcp); /* Confirms call */ |
194a383a KS |
302 | isop->isop_chan = (caddr_t)lcp; |
303 | isop->isop_laddr = &isop->isop_sladdr; | |
304 | isop->isop_faddr = &isop->isop_sfaddr; | |
305 | DTEtoNSAP(isop->isop_laddr, &lcp->lcd_laddr); | |
306 | DTEtoNSAP(isop->isop_faddr, &lcp->lcd_faddr); | |
01acbfa1 | 307 | parse_facil(lcp, isop, &(mtod(m, struct x25_packet *)->packet_data), |
194a383a | 308 | m->m_pkthdr.len - PKHEADERLN); |
194a383a KS |
309 | } |
310 | ||
311 | cons_tpinput(lcp, m0) | |
312 | struct mbuf *m0; | |
313 | struct pklcd *lcp; | |
314 | { | |
315 | register struct isopcb *isop = (struct isopcb *)lcp->lcd_upnext; | |
316 | register struct x25_packet *xp; | |
01acbfa1 | 317 | int cmd, ptype = CLEAR; |
3b1d357b | 318 | |
dfcea4ca KS |
319 | if (isop == 0) |
320 | return; | |
01acbfa1 | 321 | if (m0 == 0) |
0d1c7f4b | 322 | goto dead; |
194a383a KS |
323 | switch(m0->m_type) { |
324 | case MT_DATA: | |
325 | case MT_OOBDATA: | |
01acbfa1 | 326 | tpcons_input(m0, isop->isop_faddr, isop->isop_laddr, (caddr_t)lcp); |
0570df3c | 327 | return; |
194a383a KS |
328 | |
329 | case MT_CONTROL: | |
01acbfa1 | 330 | switch (ptype = pk_decode(mtod(m0, struct x25_packet *))) { |
194a383a KS |
331 | |
332 | case RR: | |
333 | cmd = PRC_CONS_SEND_DONE; | |
3b1d357b | 334 | break; |
194a383a | 335 | |
dfcea4ca KS |
336 | case CALL_ACCEPTED: |
337 | if (lcp->lcd_sb.sb_mb) | |
338 | lcp->lcd_send(lcp); /* XXX - fix this */ | |
0570df3c KS |
339 | /*FALLTHROUGH*/ |
340 | default: | |
341 | return; | |
dfcea4ca | 342 | |
0d1c7f4b | 343 | dead: |
0d1c7f4b KS |
344 | case CLEAR: |
345 | case CLEAR_CONF: | |
01acbfa1 KS |
346 | lcp->lcd_upper = 0; |
347 | lcp->lcd_upnext = 0; | |
348 | isop->isop_chan = 0; | |
349 | case RESET: | |
194a383a | 350 | cmd = PRC_ROUTEDEAD; |
3b1d357b | 351 | } |
194a383a | 352 | tpcons_ctlinput(cmd, isop->isop_faddr, isop); |
01acbfa1 KS |
353 | if (cmd = PRC_ROUTEDEAD && isop->isop_refcnt == 0) |
354 | iso_pcbdetach(isop); | |
3b1d357b | 355 | } |
3b1d357b KS |
356 | } |
357 | ||
358 | /* | |
194a383a | 359 | * NAME: cons_connect() |
3b1d357b | 360 | * CALLED FROM: |
194a383a KS |
361 | * tpcons_pcbconnect() when opening a new connection. |
362 | * FUNCTION anD ARGUMENTS: | |
363 | * Figures out which device to use, finding a route if one doesn't | |
364 | * already exist. | |
365 | * RETURN VALUE: | |
366 | * returns E* | |
3b1d357b | 367 | */ |
194a383a KS |
368 | cons_connect(isop) |
369 | register struct isopcb *isop; | |
3b1d357b | 370 | { |
194a383a KS |
371 | register struct pklcd *lcp = (struct pklcd *)isop->isop_chan; |
372 | register struct mbuf *m; | |
373 | struct ifaddr *ifa; | |
57c32df9 | 374 | int error; |
3b1d357b | 375 | |
194a383a KS |
376 | IFDEBUG(D_CCONN) |
377 | printf("cons_connect(0x%x): ", isop); | |
378 | dump_isoaddr(isop->isop_faddr); | |
379 | printf("myaddr: "); | |
380 | dump_isoaddr(isop->isop_laddr); | |
381 | printf("\n" ); | |
382 | ENDDEBUG | |
383 | NSAPtoDTE(isop->isop_faddr, &lcp->lcd_faddr); | |
dfcea4ca KS |
384 | lcp->lcd_upper = cons_tpinput; |
385 | lcp->lcd_upnext = (caddr_t)isop; | |
194a383a KS |
386 | IFDEBUG(D_CCONN) |
387 | printf( | |
388 | "calling make_partial_x25_packet( 0x%x, 0x%x, 0x%x)\n", | |
389 | &lcp->lcd_faddr, &lcp->lcd_laddr, | |
390 | isop->isop_socket->so_proto->pr_protocol); | |
391 | ENDDEBUG | |
57c32df9 KS |
392 | if ((error = make_partial_x25_packet(isop, lcp, m)) == 0) |
393 | error = pk_connect(lcp, &lcp->lcd_faddr); | |
394 | return error; | |
3b1d357b KS |
395 | } |
396 | ||
397 | /* | |
194a383a | 398 | **************************** DEVICE cons *************************** |
3b1d357b | 399 | */ |
3b1d357b | 400 | |
3b1d357b KS |
401 | |
402 | /* | |
194a383a | 403 | * NAME: cons_ctlinput() |
3b1d357b | 404 | * CALLED FROM: |
194a383a KS |
405 | * lower layer when ECN_CLEAR occurs : this routine is here |
406 | * for consistency - cons subnet service calls its higher layer | |
407 | * through the protosw entry. | |
408 | * FUNCTION & ARGUMENTS: | |
409 | * cmd is a PRC_* command, list found in ../sys/protosw.h | |
410 | * copcb is the obvious. | |
411 | * This serves the higher-layer cons service. | |
412 | * NOTE: this takes 3rd arg. because cons uses it to inform itself | |
413 | * of things (timeouts, etc) but has a pcb instead of an address. | |
3b1d357b | 414 | */ |
194a383a KS |
415 | cons_ctlinput(cmd, sa, copcb) |
416 | int cmd; | |
417 | struct sockaddr *sa; | |
418 | register struct pklcd *copcb; | |
3b1d357b | 419 | { |
3b1d357b | 420 | } |
3b1d357b | 421 | |
3b1d357b | 422 | |
194a383a KS |
423 | find_error_reason( xp ) |
424 | register struct x25_packet *xp; | |
425 | { | |
426 | extern u_char x25_error_stats[]; | |
427 | int error, cause; | |
3b1d357b | 428 | |
194a383a KS |
429 | if (xp) { |
430 | cause = 4[(char *)xp]; | |
431 | switch (cause) { | |
432 | case 0x00: | |
433 | case 0x80: | |
434 | /* DTE originated; look at the diagnostic */ | |
435 | error = (CONL_ERROR_MASK | cause); | |
436 | goto done; | |
3b1d357b | 437 | |
194a383a KS |
438 | case 0x01: /* number busy */ |
439 | case 0x81: | |
440 | case 0x09: /* Out of order */ | |
441 | case 0x89: | |
442 | case 0x11: /* Remot Procedure Error */ | |
443 | case 0x91: | |
444 | case 0x19: /* reverse charging accept not subscribed */ | |
445 | case 0x99: | |
446 | case 0x21: /* Incampat destination */ | |
447 | case 0xa1: | |
448 | case 0x29: /* fast select accept not subscribed */ | |
449 | case 0xa9: | |
450 | case 0x39: /* ship absent */ | |
451 | case 0xb9: | |
452 | case 0x03: /* invalid facil request */ | |
453 | case 0x83: | |
454 | case 0x0b: /* access barred */ | |
455 | case 0x8b: | |
456 | case 0x13: /* local procedure error */ | |
457 | case 0x93: | |
458 | case 0x05: /* network congestion */ | |
459 | case 0x85: | |
460 | case 0x8d: /* not obtainable */ | |
461 | case 0x0d: | |
462 | case 0x95: /* RPOA out of order */ | |
463 | case 0x15: | |
464 | /* take out bit 8 | |
465 | * so we don't have to have so many perror entries | |
466 | */ | |
467 | error = (CONL_ERROR_MASK | 0x100 | (cause & ~0x80)); | |
468 | goto done; | |
3b1d357b | 469 | |
194a383a KS |
470 | case 0xc1: /* gateway-detected proc error */ |
471 | case 0xc3: /* gateway congestion */ | |
3b1d357b | 472 | |
194a383a KS |
473 | error = (CONL_ERROR_MASK | 0x100 | cause); |
474 | goto done; | |
475 | } | |
476 | } | |
477 | /* otherwise, a *hopefully* valid perror exists in the e_reason field */ | |
478 | error = xp->packet_data; | |
479 | if (error = 0) { | |
480 | printf("Incoming PKT TYPE 0x%x with reason 0x%x\n", | |
481 | pk_decode(xp), | |
482 | cause); | |
483 | error = E_CO_HLI_DISCA; | |
484 | } | |
3b1d357b | 485 | |
194a383a KS |
486 | done: |
487 | return error; | |
488 | } | |
3b1d357b | 489 | |
3b1d357b | 490 | |
3b1d357b | 491 | |
194a383a | 492 | #endif KERNEL |
3b1d357b KS |
493 | |
494 | /* | |
495 | * NAME: make_partial_x25_packet() | |
496 | * | |
497 | * FUNCTION and ARGUMENTS: | |
194a383a | 498 | * Makes part of an X.25 call packet, for use by x25. |
3b1d357b | 499 | * (src) and (dst) are the NSAP-addresses of source and destination. |
3b1d357b KS |
500 | * (buf) is a ptr to a buffer into which to write this partial header. |
501 | * | |
194a383a KS |
502 | * 0 Facility length (in octets) |
503 | * 1 Facility field, which is a set of: | |
3b1d357b KS |
504 | * m facil code |
505 | * m+1 facil param len (for >2-byte facilities) in octets | |
506 | * m+2..p facil param field | |
507 | * q user data (protocol identification octet) | |
508 | * | |
509 | * | |
510 | * RETURNS: | |
511 | * 0 if OK | |
512 | * E* if failed. | |
194a383a KS |
513 | * |
514 | * SIDE EFFECTS: | |
515 | * Stores facilites mbuf in X.25 control block, where the connect | |
516 | * routine knows where to look for it. | |
3b1d357b KS |
517 | */ |
518 | ||
519 | #ifdef X25_1984 | |
520 | int cons_use_facils = 1; | |
521 | #else X25_1984 | |
522 | int cons_use_facils = 0; | |
523 | #endif X25_1984 | |
524 | ||
525 | int cons_use_udata = 1; /* KLUDGE FOR DEBUGGING */ | |
526 | ||
527 | Static int | |
194a383a KS |
528 | make_partial_x25_packet(isop, lcp) |
529 | struct isopcb *isop; | |
530 | struct pklcd *lcp; | |
3b1d357b | 531 | { |
3b1d357b KS |
532 | u_int proto; |
533 | int flag; | |
194a383a | 534 | caddr_t buf; |
0d1c7f4b | 535 | register caddr_t ptr; |
3b1d357b KS |
536 | register int len = 0; |
537 | int buflen =0; | |
538 | caddr_t facil_len; | |
539 | int oddness = 0; | |
194a383a | 540 | struct mbuf *m; |
3b1d357b KS |
541 | |
542 | ||
0570df3c KS |
543 | IFDEBUG(D_CCONN) |
544 | printf("make_partial_x25_packet(0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n", | |
545 | isop->isop_laddr, isop->isop_faddr, proto, m, flag); | |
546 | ENDDEBUG | |
547 | if (cons_use_udata) { | |
548 | if (isop->isop_x25crud_len > 0) { | |
549 | /* | |
550 | * The user specified something. Stick it in | |
551 | */ | |
552 | bcopy(isop->isop_x25crud, lcp->lcd_faddr.x25_udata, | |
553 | isop->isop_x25crud_len); | |
554 | lcp->lcd_faddr.x25_udlen = isop->isop_x25crud_len; | |
555 | } | |
556 | } | |
557 | ||
558 | if (cons_use_facils == 0) { | |
559 | lcp->lcd_facilities = 0; | |
560 | return 0; | |
561 | } | |
57c32df9 | 562 | MGETHDR(m, MT_DATA, M_WAITOK); |
194a383a KS |
563 | if (m == 0) |
564 | return ENOBUFS; | |
565 | buf = mtod(m, caddr_t); | |
0d1c7f4b | 566 | ptr = buf; |
3b1d357b | 567 | |
3b1d357b KS |
568 | /* ptr now points to facil length (len of whole facil field in OCTETS */ |
569 | facil_len = ptr ++; | |
57c32df9 KS |
570 | m->m_len = 0; |
571 | pk_build_facilities(m, &lcp->lcd_faddr, 0); | |
3b1d357b KS |
572 | |
573 | IFDEBUG(D_CADDR) | |
574 | printf("make_partial calling: ptr 0x%x, len 0x%x\n", ptr, | |
194a383a | 575 | isop->isop_laddr->siso_addr.isoa_len); |
3b1d357b | 576 | ENDDEBUG |
194a383a | 577 | if (cons_use_facils) { |
57c32df9 KS |
578 | *ptr++ = 0; /* Marker to separate X.25 facitilies from CCITT ones */ |
579 | *ptr++ = 0x0f; | |
3b1d357b KS |
580 | *ptr = 0xcb; /* calling facility code */ |
581 | ptr ++; | |
582 | ptr ++; /* leave room for facil param len (in OCTETS + 1) */ | |
583 | ptr ++; /* leave room for the facil param len (in nibbles), | |
57c32df9 KS |
584 | * high two bits of which indicate full/partial NSAP |
585 | */ | |
194a383a KS |
586 | len = isop->isop_laddr->siso_addr.isoa_len; |
587 | bcopy( isop->isop_laddr->siso_data, ptr, len); | |
0570df3c | 588 | *(ptr-2) = len+1; /* facil param len in octets */ |
3b1d357b KS |
589 | *(ptr-1) = len<<1; /* facil param len in nibbles */ |
590 | ptr += len; | |
591 | ||
592 | IFDEBUG(D_CADDR) | |
593 | printf("make_partial called: ptr 0x%x, len 0x%x\n", ptr, | |
194a383a | 594 | isop->isop_faddr->siso_addr.isoa_len); |
3b1d357b KS |
595 | ENDDEBUG |
596 | *ptr = 0xc9; /* called facility code */ | |
597 | ptr ++; | |
598 | ptr ++; /* leave room for facil param len (in OCTETS + 1) */ | |
599 | ptr ++; /* leave room for the facil param len (in nibbles), | |
57c32df9 KS |
600 | * high two bits of which indicate full/partial NSAP |
601 | */ | |
194a383a KS |
602 | len = isop->isop_faddr->siso_nlen; |
603 | bcopy(isop->isop_faddr->siso_data, ptr, len); | |
0570df3c | 604 | *(ptr-2) = len+1; /* facil param len = addr len + 1 for each of these |
3b1d357b KS |
605 | * two length fields, in octets */ |
606 | *(ptr-1) = len<<1; /* facil param len in nibbles */ | |
607 | ptr += len; | |
608 | ||
609 | } | |
610 | *facil_len = ptr - facil_len - 1; | |
194a383a | 611 | if (*facil_len > MAX_FACILITIES) |
3b1d357b KS |
612 | return E_CO_PNA_LONG; |
613 | ||
3b1d357b KS |
614 | buflen = (int)(ptr - buf); |
615 | ||
616 | IFDEBUG(D_CDUMP_REQ) | |
617 | register int i; | |
618 | ||
619 | printf("ECN_CONNECT DATA buf 0x%x len %d (0x%x)\n", | |
620 | buf, buflen, buflen); | |
621 | for( i=0; i < buflen; ) { | |
622 | printf("+%d: %x %x %x %x %x %x %x %x\n", | |
623 | i, | |
624 | *(buf+i), *(buf+i+1), *(buf+i+2), *(buf+i+3), | |
625 | *(buf+i+4), *(buf+i+5), *(buf+i+6), *(buf+i+7)); | |
626 | i+=8; | |
627 | } | |
628 | ENDDEBUG | |
629 | IFDEBUG(D_CADDR) | |
630 | printf("make_partial returns buf 0x%x size 0x%x bytes\n", | |
631 | mtod(m, caddr_t), buflen); | |
632 | ENDDEBUG | |
633 | ||
194a383a | 634 | if (buflen > MHLEN) |
3b1d357b KS |
635 | return E_CO_PNA_LONG; |
636 | ||
57c32df9 | 637 | m->m_pkthdr.len = m->m_len = buflen; |
194a383a | 638 | lcp->lcd_facilities = m; |
3b1d357b KS |
639 | return 0; |
640 | } | |
641 | ||
642 | /* | |
643 | * NAME: NSAPtoDTE() | |
644 | * CALLED FROM: | |
645 | * make_partial_x25_packet() | |
646 | * FUNCTION and ARGUMENTS: | |
647 | * get a DTE address from an NSAP-address (struct sockaddr_iso) | |
648 | * (dst_octet) is the octet into which to begin stashing the DTE addr | |
649 | * (dst_nibble) takes 0 or 1. 1 means begin filling in the DTE addr | |
650 | * in the high-order nibble of dst_octet. 0 means low-order nibble. | |
651 | * (addr) is the NSAP-address | |
652 | * (flag) is true if the transport suffix is to become the | |
653 | * last two digits of the DTE address | |
194a383a | 654 | * A DTE address is a series of ASCII digits |
3b1d357b KS |
655 | * |
656 | * A DTE address may have leading zeros. The are significant. | |
657 | * 1 digit per nibble, may be an odd number of nibbles. | |
658 | * | |
659 | * An NSAP-address has the DTE address in the IDI. Leading zeros are | |
660 | * significant. Trailing hex f indicates the end of the DTE address. | |
194a383a | 661 | * The IDI is a series of BCD digits, one per nibble. |
3b1d357b KS |
662 | * |
663 | * RETURNS | |
664 | * # significant digits in the DTE address, -1 if error. | |
665 | */ | |
666 | ||
667 | Static int | |
194a383a KS |
668 | NSAPtoDTE(siso, sx25) |
669 | register struct sockaddr_iso *siso; | |
670 | register struct sockaddr_x25 *sx25; | |
3b1d357b | 671 | { |
194a383a | 672 | int dtelen = -1; |
3b1d357b KS |
673 | |
674 | IFDEBUG(D_CADDR) | |
194a383a | 675 | printf("NSAPtoDTE: nsap: %s\n", clnp_iso_addrp(&siso->siso_addr)); |
3b1d357b KS |
676 | ENDDEBUG |
677 | ||
194a383a KS |
678 | if (siso->siso_data[0] == AFI_37) { |
679 | register char *out = sx25->x25_addr; | |
680 | register char *in = siso->siso_data + 1; | |
681 | register int nibble; | |
0d1c7f4b KS |
682 | char *lim = siso->siso_data + siso->siso_nlen; |
683 | char *olim = out+15; | |
194a383a | 684 | int lowNibble = 0; |
3b1d357b | 685 | |
194a383a KS |
686 | while (in < lim) { |
687 | nibble = ((lowNibble ? *in++ : (*in >> 4)) & 0xf) | 0x30; | |
688 | lowNibble ^= 1; | |
0d1c7f4b | 689 | if (nibble != 0x3f && out < olim) |
194a383a KS |
690 | *out++ = nibble; |
691 | } | |
692 | dtelen = out - sx25->x25_addr; | |
693 | *out++ = 0; | |
694 | } else { | |
194a383a | 695 | /* error = iso_8208snparesolve(addr, x121string, &x121strlen);*/ |
01acbfa1 KS |
696 | register struct rtentry *rt; |
697 | extern struct sockaddr_iso blank_siso; | |
698 | struct sockaddr_iso nsiso; | |
699 | ||
700 | nsiso = blank_siso; | |
701 | bcopy(nsiso.siso_data, siso->siso_data, | |
702 | nsiso.siso_nlen = siso->siso_nlen); | |
703 | if (rt = rtalloc1(&nsiso, 1)) { | |
194a383a KS |
704 | register struct sockaddr_x25 *sxx = |
705 | (struct sockaddr_x25 *)rt->rt_gateway; | |
706 | register char *in = sxx->x25_addr; | |
707 | ||
708 | rt->rt_use--; | |
709 | if (sxx && sxx->x25_family == AF_CCITT) { | |
710 | bcopy(sx25->x25_addr, sxx->x25_addr, sizeof(sx25->x25_addr)); | |
711 | while (*in++) {} | |
712 | dtelen = in - sxx->x25_addr; | |
713 | } | |
714 | } | |
715 | } | |
716 | return dtelen; | |
3b1d357b KS |
717 | } |
718 | ||
719 | /* | |
720 | * NAME: FACILtoNSAP() | |
721 | * CALLED FROM: | |
722 | * parse_facil() | |
723 | * FUNCTION and ARGUMENTS: | |
724 | * Creates and NSAP in the sockaddr_iso (addr) from the | |
194a383a | 725 | * x.25 facility found at buf - 1. |
3b1d357b | 726 | * RETURNS: |
01acbfa1 | 727 | * 0 if ok, -1 if error. |
3b1d357b KS |
728 | */ |
729 | ||
730 | Static int | |
194a383a | 731 | FACILtoNSAP(addr, buf) |
01acbfa1 | 732 | register u_char *buf; |
3b1d357b KS |
733 | register struct sockaddr_iso *addr; |
734 | { | |
01acbfa1 KS |
735 | int len_in_nibbles = *++buf & 0x3f; |
736 | u_char buf_len = (len_in_nibbles + 1) >> 1;; /* in bytes */ | |
3b1d357b KS |
737 | |
738 | IFDEBUG(D_CADDR) | |
739 | printf("FACILtoNSAP( 0x%x, 0x%x, 0x%x )\n", | |
740 | buf, buf_len, addr ); | |
741 | ENDDEBUG | |
742 | ||
194a383a | 743 | len_in_nibbles = *buf & 0x3f; |
3b1d357b KS |
744 | /* despite the fact that X.25 makes us put a length in nibbles |
745 | * here, the NSAP-addrs are always in full octets | |
746 | */ | |
194a383a KS |
747 | switch (*buf++ & 0xc0) { |
748 | case 0: | |
749 | /* Entire OSI NSAP address */ | |
750 | bcopy((caddr_t)buf, addr->siso_data, addr->siso_nlen = buf_len); | |
751 | break; | |
3b1d357b | 752 | |
194a383a KS |
753 | case 40: |
754 | /* Partial OSI NSAP address, assume trailing */ | |
755 | if (buf_len + addr->siso_nlen > sizeof(addr->siso_addr)) | |
756 | return -1; | |
757 | bcopy((caddr_t)buf, TSEL(addr), buf_len); | |
758 | addr->siso_nlen += buf_len; | |
759 | break; | |
3b1d357b | 760 | |
194a383a KS |
761 | default: |
762 | /* Rather than blow away the connection, just ignore and use | |
763 | NSAP from DTE */; | |
3b1d357b | 764 | } |
01acbfa1 | 765 | return 0; |
194a383a | 766 | } |
3b1d357b | 767 | |
01acbfa1 | 768 | Static |
194a383a KS |
769 | init_siso(siso) |
770 | register struct sockaddr_iso *siso; | |
771 | { | |
772 | siso->siso_len = sizeof (*siso); | |
773 | siso->siso_family = AF_ISO; | |
774 | siso->siso_data[0] = AFI_37; | |
775 | siso->siso_nlen = 8; | |
3b1d357b KS |
776 | } |
777 | ||
778 | /* | |
779 | * NAME: DTEtoNSAP() | |
780 | * CALLED FROM: | |
781 | * parse_facil() | |
782 | * FUNCTION and ARGUMENTS: | |
783 | * Creates a type 37 NSAP in the sockaddr_iso (addr) | |
194a383a | 784 | * from a DTE address found in a sockaddr_x25. |
3b1d357b KS |
785 | * |
786 | * RETURNS: | |
787 | * 0 if ok; E* otherwise. | |
788 | */ | |
789 | ||
790 | Static int | |
194a383a | 791 | DTEtoNSAP(addr, sx) |
3b1d357b | 792 | struct sockaddr_iso *addr; |
194a383a | 793 | struct sockaddr_x25 *sx; |
3b1d357b | 794 | { |
194a383a KS |
795 | register char *in, *out; |
796 | register int first; | |
797 | int pad_tail = 0; | |
798 | int src_len; | |
3b1d357b | 799 | |
3b1d357b | 800 | |
194a383a | 801 | init_siso(addr); |
194a383a | 802 | in = sx->x25_addr; |
01acbfa1 KS |
803 | src_len = strlen(in); |
804 | addr->siso_nlen = (src_len + 3) / 2; | |
805 | out = addr->siso_data; | |
806 | *out++ = 0x37; | |
807 | if (src_len & 1) { | |
194a383a KS |
808 | pad_tail = 0xf; |
809 | src_len++; | |
810 | } | |
01acbfa1 KS |
811 | for (first = 0; src_len > 0; src_len--) { |
812 | first |= 0xf & *in++; | |
194a383a KS |
813 | if (src_len & 1) { |
814 | *out++ = first; | |
815 | first = 0; | |
816 | } | |
817 | else first <<= 4; | |
818 | } | |
819 | if (pad_tail) | |
820 | out[-1] |= 0xf; | |
3b1d357b KS |
821 | return 0; /* ok */ |
822 | } | |
823 | ||
824 | /* | |
825 | * FUNCTION and ARGUMENTS: | |
826 | * parses (buf_len) bytes beginning at (buf) and finds | |
827 | * a called nsap, a calling nsap, and protocol identifier. | |
828 | * RETURNS: | |
829 | * 0 if ok, E* otherwise. | |
830 | */ | |
831 | ||
01acbfa1 | 832 | Static int |
194a383a | 833 | parse_facil(lcp, isop, buf, buf_len) |
3b1d357b KS |
834 | caddr_t buf; |
835 | u_char buf_len; /* in bytes */ | |
194a383a KS |
836 | struct isopcb *isop; |
837 | struct pklcd *lcp; | |
3b1d357b KS |
838 | { |
839 | register int i; | |
194a383a KS |
840 | register u_char *ptr = (u_char *)buf; |
841 | u_char *ptr_lim, *facil_lim; | |
842 | int facil_param_len, facil_len; | |
3b1d357b KS |
843 | |
844 | IFDEBUG(D_CADDR) | |
194a383a | 845 | printf("parse_facil(0x%x, 0x%x, 0x%x, 0x%x)\n", |
01acbfa1 | 846 | lcp, isop, buf, buf_len); |
3b1d357b KS |
847 | dump_buf(buf, buf_len); |
848 | ENDDEBUG | |
849 | ||
850 | /* find the beginnings of the facility fields in buf | |
851 | * by skipping over the called & calling DTE addresses | |
852 | * i <- # nibbles in called + # nibbles in calling | |
853 | * i += 1 so that an odd nibble gets rounded up to even | |
854 | * before dividing by 2, then divide by two to get # octets | |
855 | */ | |
194a383a | 856 | i = (int)(*ptr >> 4) + (int)(*ptr&0xf); |
3b1d357b | 857 | i++; |
194a383a | 858 | ptr += i >> 1; |
3b1d357b KS |
859 | ptr ++; /* plus one for the DTE lengths byte */ |
860 | ||
861 | /* ptr now is at facil_length field */ | |
194a383a KS |
862 | facil_len = *ptr++; |
863 | facil_lim = ptr + facil_len; | |
3b1d357b | 864 | IFDEBUG(D_CADDR) |
194a383a | 865 | printf("parse_facils: facil length is 0x%x\n", (int) facil_len); |
3b1d357b KS |
866 | ENDDEBUG |
867 | ||
01acbfa1 | 868 | while (ptr < facil_lim) { |
3b1d357b | 869 | /* get NSAP addresses from facilities */ |
194a383a | 870 | switch (*ptr++) { |
3b1d357b | 871 | case 0xcb: |
194a383a KS |
872 | /* calling NSAP */ |
873 | facil_param_len = FACILtoNSAP(isop->isop_faddr, ptr); | |
3b1d357b KS |
874 | break; |
875 | case 0xc9: | |
194a383a KS |
876 | /* called NSAP */ |
877 | facil_param_len = FACILtoNSAP(isop->isop_laddr, ptr); | |
3b1d357b KS |
878 | break; |
879 | ||
880 | /* from here to default are legit cases that I ignore */ | |
3b1d357b KS |
881 | /* variable length */ |
882 | case 0xca: /* end-to-end transit delay negot */ | |
883 | case 0xc6: /* network user id */ | |
884 | case 0xc5: /* charging info : indicating monetary unit */ | |
885 | case 0xc2: /* charging info : indicating segment count */ | |
886 | case 0xc1: /* charging info : indicating call duration */ | |
887 | case 0xc4: /* RPOA extended format */ | |
888 | case 0xc3: /* call redirection notification */ | |
889 | facil_param_len = 0; | |
3b1d357b KS |
890 | break; |
891 | ||
892 | /* 1 octet */ | |
893 | case 0x0a: /* min. throughput class negot */ | |
894 | case 0x02: /* throughput class */ | |
895 | case 0x03: case 0x47: /* CUG shit */ | |
896 | case 0x0b: /* expedited data negot */ | |
897 | case 0x01: /* Fast select or reverse charging | |
898 | (example of intelligent protocol design) */ | |
899 | case 0x04: /* charging info : requesting service */ | |
900 | case 0x08: /* called line addr modified notification */ | |
01acbfa1 | 901 | case 0x00: /* marker to indicate beginning of CCITT facils */ |
3b1d357b | 902 | facil_param_len = 1; |
3b1d357b KS |
903 | break; |
904 | ||
905 | /* any 2 octets */ | |
906 | case 0x42: /* pkt size */ | |
907 | case 0x43: /* win size */ | |
908 | case 0x44: /* RPOA basic format */ | |
909 | case 0x41: /* bilateral CUG shit */ | |
910 | case 0x49: /* transit delay selection and indication */ | |
911 | facil_param_len = 2; | |
3b1d357b KS |
912 | break; |
913 | ||
3b1d357b | 914 | default: |
3b1d357b | 915 | printf( |
01acbfa1 KS |
916 | "BOGUS FACILITY CODE facil_lim 0x%x facil_len %d, ptr 0x%x *ptr 0x%x\n", |
917 | facil_lim, facil_len, ptr - 1, ptr[-1]); | |
918 | /* facil that we don't handle | |
919 | return E_CO_HLI_REJI; */ | |
920 | switch (ptr[-1] & 0xc0) { | |
921 | case 0x00: facil_param_len = 1; break; | |
922 | case 0x40: facil_param_len = 2; break; | |
923 | case 0x80: facil_param_len = 3; break; | |
924 | case 0xc0: facil_param_len = 0; break; | |
925 | } | |
3b1d357b | 926 | } |
194a383a KS |
927 | if (facil_param_len == -1) |
928 | return E_CO_REG_ICDA; | |
929 | if (facil_param_len == 0) /* variable length */ | |
01acbfa1 | 930 | facil_param_len = (int)*ptr++; /* 1 + the real facil param */ |
3b1d357b KS |
931 | ptr += facil_param_len; |
932 | } | |
3b1d357b KS |
933 | return 0; |
934 | } | |
935 | ||
194a383a | 936 | #endif TPCONS |