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15637ed4 RG |
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 | * | |
33 | * @(#)tp_iso.c 7.11 (Berkeley) 5/6/91 | |
34 | */ | |
35 | ||
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 | * ARGO TP | |
dd18dc33 DG |
64 | * $Header: /a/cvs/386BSD/src/sys/netiso/tp_iso.c,v 1.1.1.1 1993/06/12 14:57:18 rgrimes Exp $ |
65 | * $Source: /a/cvs/386BSD/src/sys/netiso/tp_iso.c,v $ | |
15637ed4 RG |
66 | * |
67 | * Here is where you find the iso-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 | * iso_getsufx: gets transport suffix out of an isopcb structure. | |
74 | * iso_putsufx: put transport suffix into an isopcb structure. | |
75 | * iso_putnetaddr: put a whole net addr into an isopcb. | |
76 | * iso_getnetaddr: get a whole net addr from an isopcb. | |
77 | * iso_cmpnetaddr: compare a whole net addr from an isopcb. | |
78 | * iso_recycle_suffix: clear suffix for reuse in isopcb | |
79 | * tpclnp_ctlinput: handle ER CNLPdu : icmp-like stuff | |
80 | * tpclnp_mtu: figure out what size tpdu to use | |
81 | * tpclnp_input: take a pkt from clnp, strip off its clnp header, | |
82 | * give to tp | |
83 | * tpclnp_output_dg: package a pkt for clnp given 2 addresses & some data | |
84 | * tpclnp_output: package a pkt for clnp given an isopcb & some data | |
85 | */ | |
86 | ||
87 | #ifdef ISO | |
88 | ||
89 | #include "param.h" | |
dd18dc33 | 90 | #include "systm.h" |
15637ed4 RG |
91 | #include "socket.h" |
92 | #include "socketvar.h" | |
93 | #include "domain.h" | |
94 | #include "malloc.h" | |
95 | #include "mbuf.h" | |
96 | #include "errno.h" | |
97 | #include "time.h" | |
98 | #include "protosw.h" | |
99 | ||
100 | #include "../net/if.h" | |
101 | #include "../net/route.h" | |
102 | ||
103 | #include "argo_debug.h" | |
104 | #include "tp_param.h" | |
105 | #include "tp_stat.h" | |
106 | #include "tp_pcb.h" | |
107 | #include "tp_trace.h" | |
108 | #include "tp_stat.h" | |
109 | #include "tp_tpdu.h" | |
110 | #include "tp_clnp.h" | |
111 | #include "cltp_var.h" | |
112 | ||
113 | /* | |
114 | * CALLED FROM: | |
115 | * pr_usrreq() on PRU_BIND, PRU_CONNECT, PRU_ACCEPT, and PRU_PEERADDR | |
116 | * FUNCTION, ARGUMENTS: | |
117 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
118 | */ | |
119 | ||
120 | iso_getsufx(isop, lenp, data_out, which) | |
121 | struct isopcb *isop; | |
122 | u_short *lenp; | |
123 | caddr_t data_out; | |
124 | int which; | |
125 | { | |
126 | register struct sockaddr_iso *addr = 0; | |
127 | ||
128 | switch (which) { | |
129 | case TP_LOCAL: | |
130 | addr = isop->isop_laddr; | |
131 | break; | |
132 | ||
133 | case TP_FOREIGN: | |
134 | addr = isop->isop_faddr; | |
135 | } | |
136 | if (addr) | |
137 | bcopy(TSEL(addr), data_out, (*lenp = addr->siso_tlen)); | |
138 | } | |
139 | ||
140 | /* CALLED FROM: | |
141 | * tp_newsocket(); i.e., when a connection is being established by an | |
142 | * incoming CR_TPDU. | |
143 | * | |
144 | * FUNCTION, ARGUMENTS: | |
145 | * Put a transport suffix (found in name) into an isopcb structure (isop). | |
146 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
147 | */ | |
148 | void | |
149 | iso_putsufx(isop, sufxloc, sufxlen, which) | |
150 | struct isopcb *isop; | |
151 | caddr_t sufxloc; | |
152 | int sufxlen, which; | |
153 | { | |
154 | struct sockaddr_iso **dst, *backup; | |
155 | register struct sockaddr_iso *addr; | |
156 | struct mbuf *m; | |
157 | int len; | |
158 | ||
159 | switch (which) { | |
160 | default: | |
161 | return; | |
162 | ||
163 | case TP_LOCAL: | |
164 | dst = &isop->isop_laddr; | |
165 | backup = &isop->isop_sladdr; | |
166 | break; | |
167 | ||
168 | case TP_FOREIGN: | |
169 | dst = &isop->isop_faddr; | |
170 | backup = &isop->isop_sfaddr; | |
171 | } | |
172 | if ((addr = *dst) == 0) { | |
173 | addr = *dst = backup; | |
174 | addr->siso_nlen = 0; | |
175 | addr->siso_slen = 0; | |
176 | addr->siso_plen = 0; | |
177 | printf("iso_putsufx on un-initialized isopcb\n"); | |
178 | } | |
179 | len = sufxlen + addr->siso_nlen + | |
180 | (sizeof(*addr) - sizeof(addr->siso_data)); | |
181 | if (addr == backup) { | |
182 | if (len > sizeof(*addr)) { | |
183 | m = m_getclr(M_DONTWAIT, MT_SONAME); | |
184 | if (m == 0) | |
185 | return; | |
186 | addr = *dst = mtod(m, struct sockaddr_iso *); | |
187 | *addr = *backup; | |
188 | m->m_len = len; | |
189 | } | |
190 | } | |
191 | bcopy(sufxloc, TSEL(addr), sufxlen); | |
192 | addr->siso_tlen = sufxlen; | |
193 | addr->siso_len = len; | |
194 | } | |
195 | ||
196 | /* | |
197 | * CALLED FROM: | |
198 | * tp.trans whenever we go into REFWAIT state. | |
199 | * FUNCTION and ARGUMENT: | |
200 | * Called when a ref is frozen, to allow the suffix to be reused. | |
201 | * (isop) is the net level pcb. This really shouldn't have to be | |
202 | * done in a NET level pcb but... for the internet world that just | |
203 | * the way it is done in BSD... | |
204 | * The alternative is to have the port unusable until the reference | |
205 | * timer goes off. | |
206 | */ | |
207 | void | |
208 | iso_recycle_tsuffix(isop) | |
209 | struct isopcb *isop; | |
210 | { | |
211 | isop->isop_laddr->siso_tlen = isop->isop_faddr->siso_tlen = 0; | |
212 | } | |
213 | ||
214 | /* | |
215 | * CALLED FROM: | |
216 | * tp_newsocket(); i.e., when a connection is being established by an | |
217 | * incoming CR_TPDU. | |
218 | * | |
219 | * FUNCTION and ARGUMENTS: | |
220 | * Copy a whole net addr from a struct sockaddr (name). | |
221 | * into an isopcb (isop). | |
222 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
223 | */ | |
224 | void | |
225 | iso_putnetaddr(isop, name, which) | |
226 | register struct isopcb *isop; | |
227 | struct sockaddr_iso *name; | |
228 | int which; | |
229 | { | |
230 | struct sockaddr_iso **sisop, *backup; | |
231 | register struct sockaddr_iso *siso; | |
232 | ||
233 | switch (which) { | |
234 | default: | |
235 | printf("iso_putnetaddr: should panic\n"); | |
236 | return; | |
237 | case TP_LOCAL: | |
238 | sisop = &isop->isop_laddr; | |
239 | backup = &isop->isop_sladdr; | |
240 | break; | |
241 | case TP_FOREIGN: | |
242 | sisop = &isop->isop_faddr; | |
243 | backup = &isop->isop_sfaddr; | |
244 | } | |
245 | siso = ((*sisop == 0) ? (*sisop = backup) : *sisop); | |
246 | IFDEBUG(D_TPISO) | |
247 | printf("ISO_PUTNETADDR\n"); | |
248 | dump_isoaddr(isop->isop_faddr); | |
249 | ENDDEBUG | |
250 | siso->siso_addr = name->siso_addr; | |
251 | } | |
252 | ||
253 | /* | |
254 | * CALLED FROM: | |
255 | * tp_input() when a connection is being established by an | |
256 | * incoming CR_TPDU, and considered for interception. | |
257 | * | |
258 | * FUNCTION and ARGUMENTS: | |
259 | * compare a whole net addr from a struct sockaddr (name), | |
260 | * with that implicitly stored in an isopcb (isop). | |
261 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN. | |
262 | */ | |
263 | iso_cmpnetaddr(isop, name, which) | |
264 | register struct isopcb *isop; | |
265 | register struct sockaddr_iso *name; | |
266 | int which; | |
267 | { | |
268 | struct sockaddr_iso **sisop, *backup; | |
269 | register struct sockaddr_iso *siso; | |
270 | ||
271 | switch (which) { | |
272 | default: | |
273 | printf("iso_cmpnetaddr: should panic\n"); | |
274 | return 0; | |
275 | case TP_LOCAL: | |
276 | sisop = &isop->isop_laddr; | |
277 | backup = &isop->isop_sladdr; | |
278 | break; | |
279 | case TP_FOREIGN: | |
280 | sisop = &isop->isop_faddr; | |
281 | backup = &isop->isop_sfaddr; | |
282 | } | |
283 | siso = ((*sisop == 0) ? (*sisop = backup) : *sisop); | |
284 | IFDEBUG(D_TPISO) | |
285 | printf("ISO_CMPNETADDR\n"); | |
286 | dump_isoaddr(siso); | |
287 | ENDDEBUG | |
288 | if (name->siso_tlen && bcmp(TSEL(name), TSEL(siso), name->siso_tlen)) | |
289 | return (0); | |
290 | return (bcmp((caddr_t)name->siso_data, | |
291 | (caddr_t)siso->siso_data, name->siso_nlen) == 0); | |
292 | } | |
293 | ||
294 | /* | |
295 | * CALLED FROM: | |
296 | * pr_usrreq() PRU_SOCKADDR, PRU_ACCEPT, PRU_PEERADDR | |
297 | * FUNCTION and ARGUMENTS: | |
298 | * Copy a whole net addr from an isopcb (isop) into | |
299 | * a struct sockaddr (name). | |
300 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN. | |
301 | */ | |
302 | ||
303 | void | |
304 | iso_getnetaddr( isop, name, which) | |
305 | struct isopcb *isop; | |
306 | struct mbuf *name; | |
307 | int which; | |
308 | { | |
309 | struct sockaddr_iso *siso = | |
310 | (which == TP_LOCAL ? isop->isop_laddr : isop->isop_faddr); | |
311 | if (siso) | |
312 | bcopy((caddr_t)siso, mtod(name, caddr_t), | |
313 | (unsigned)(name->m_len = siso->siso_len)); | |
314 | else | |
315 | name->m_len = 0; | |
316 | } | |
317 | ||
318 | /* | |
319 | * CALLED FROM: | |
320 | * tp_input() on incoming CR, CC, and pr_usrreq() for PRU_CONNECT | |
321 | * FUNCTION, ARGUMENTS, SIDE EFFECTS and RETURN VALUE: | |
322 | * Determine the proper maximum transmission unit, i.e., MTU, to use, given | |
323 | * a) the header size for the network protocol and the max transmission | |
324 | * unit on the subnet interface, determined from the information in (isop), | |
325 | * b) the max size negotiated so far (negot) | |
326 | * c) the window size used by the tp connection (found in so), | |
327 | * | |
328 | * The result is put in the integer *size in its integer form and in | |
329 | * *negot in its logarithmic form. | |
330 | * | |
331 | * The rules are: | |
332 | * a) can only negotiate down from the value found in *negot. | |
333 | * b) the MTU must be < the windowsize, | |
334 | * c) If src and dest are on the same net, | |
335 | * we will negotiate the closest size larger than MTU but really USE | |
336 | * the actual device mtu - ll hdr sizes. | |
337 | * otherwise we negotiate the closest size smaller than MTU - ll hdr sizes. | |
338 | */ | |
339 | ||
340 | void | |
341 | tpclnp_mtu(so, isop, size, negot ) | |
342 | struct socket *so; | |
343 | struct isopcb *isop; | |
344 | int *size; | |
345 | u_char *negot; | |
346 | { | |
347 | struct ifnet *ifp = 0; | |
348 | struct iso_ifaddr *ia = 0; | |
349 | register int i; | |
350 | int windowsize = so->so_rcv.sb_hiwat; | |
351 | int clnp_size, mtu; | |
352 | int sizeismtu = 0; | |
353 | register struct rtentry *rt = isop->isop_route.ro_rt; | |
354 | ||
355 | IFDEBUG(D_CONN) | |
356 | printf("tpclnp_mtu(0x%x,0x%x,0x%x,0x%x)\n", so, isop, size, negot); | |
357 | ENDDEBUG | |
358 | IFTRACE(D_CONN) | |
359 | tptrace(TPPTmisc, "ENTER GET MTU: size negot \n",*size, *negot, 0, 0); | |
360 | ENDTRACE | |
361 | ||
362 | *size = 1 << *negot; | |
363 | ||
364 | if( *size > windowsize ) { | |
365 | *size = windowsize; | |
366 | } | |
367 | ||
368 | if (rt == 0 || (rt->rt_flags & RTF_UP == 0) || | |
369 | (ia = (struct iso_ifaddr *)rt->rt_ifa) == 0 || | |
370 | (ifp = ia->ia_ifp) == 0) { | |
371 | IFDEBUG(D_CONN) | |
372 | printf("tpclnp_mtu routing abort rt=0x%x ia=0x%x ifp=0x%x\n", | |
373 | rt, ia, ifp) | |
374 | ENDDEBUG | |
375 | return; | |
376 | } | |
377 | ||
378 | ||
379 | ||
380 | /* TODO - make this indirect off the socket structure to the | |
381 | * network layer to get headersize | |
382 | */ | |
383 | clnp_size = sizeof(struct clnp_fixed) + sizeof(struct clnp_segment) + | |
384 | 2 * sizeof(struct iso_addr); | |
385 | mtu = SN_MTU(ifp, rt) - clnp_size; | |
386 | if(*size > mtu) { | |
387 | *size = mtu; | |
388 | sizeismtu = 1; | |
389 | } | |
390 | /* have to transform size to the log2 of size */ | |
391 | for(i=TP_MIN_TPDUSIZE; (i<=TP_MAX_TPDUSIZE && ((1<<i) <= *size)) ; i++) | |
392 | ; | |
393 | i--; | |
394 | ||
395 | IFTRACE(D_CONN) | |
396 | tptrace(TPPTmisc, "GET MTU MID: tpcb size negot i \n", | |
397 | *size, *negot, i, 0); | |
398 | ENDTRACE | |
399 | ||
400 | *size = 1<<i; | |
401 | *negot = i; | |
402 | ||
403 | IFDEBUG(D_CONN) | |
404 | printf("GET MTU RETURNS: ifp %s size 0x%x negot 0x%x\n", | |
405 | ifp->if_name, *size, *negot); | |
406 | ENDDEBUG | |
407 | IFTRACE(D_CONN) | |
408 | tptrace(TPPTmisc, "EXIT GET MTU: tpcb size negot \n", | |
409 | *size, *negot, 0, 0); | |
410 | ENDTRACE | |
411 | } | |
412 | ||
413 | ||
414 | /* | |
415 | * CALLED FROM: | |
416 | * tp_emit() | |
417 | * FUNCTION and ARGUMENTS: | |
418 | * Take a packet(m0) from tp and package it so that clnp will accept it. | |
419 | * This means prepending space for the clnp header and filling in a few | |
420 | * of the fields. | |
421 | * inp is the isopcb structure; datalen is the length of the data in the | |
422 | * mbuf string m0. | |
423 | * RETURN VALUE: | |
424 | * whatever (E*) is returned form the net layer output routine. | |
425 | */ | |
426 | ||
427 | int | |
428 | tpclnp_output(isop, m0, datalen, nochksum) | |
429 | struct isopcb *isop; | |
430 | struct mbuf *m0; | |
431 | int datalen; | |
432 | int nochksum; | |
433 | { | |
434 | register struct mbuf *m = m0; | |
435 | IncStat(ts_tpdu_sent); | |
436 | ||
437 | IFDEBUG(D_TPISO) | |
438 | struct tpdu *hdr = mtod(m0, struct tpdu *); | |
439 | ||
440 | printf( | |
441 | "abt to call clnp_output: datalen 0x%x, hdr.li 0x%x, hdr.dutype 0x%x nocsum x%x dst addr:\n", | |
442 | datalen, | |
443 | (int)hdr->tpdu_li, (int)hdr->tpdu_type, nochksum); | |
444 | dump_isoaddr(isop->isop_faddr); | |
445 | printf("\nsrc addr:\n"); | |
446 | dump_isoaddr(isop->isop_laddr); | |
447 | dump_mbuf(m0, "at tpclnp_output"); | |
448 | ENDDEBUG | |
449 | ||
450 | return | |
451 | clnp_output(m0, isop, datalen, /* flags */nochksum ? CLNP_NO_CKSUM : 0); | |
452 | } | |
453 | ||
454 | /* | |
455 | * CALLED FROM: | |
456 | * tp_error_emit() | |
457 | * FUNCTION and ARGUMENTS: | |
458 | * This is a copy of tpclnp_output that takes the addresses | |
459 | * instead of a pcb. It's used by the tp_error_emit, when we | |
460 | * don't have an iso_pcb with which to call the normal output rtn. | |
461 | * RETURN VALUE: | |
462 | * ENOBUFS or | |
463 | * whatever (E*) is returned form the net layer output routine. | |
464 | */ | |
465 | ||
466 | int | |
467 | tpclnp_output_dg(laddr, faddr, m0, datalen, ro, nochksum) | |
468 | struct iso_addr *laddr, *faddr; | |
469 | struct mbuf *m0; | |
470 | int datalen; | |
471 | struct route *ro; | |
472 | int nochksum; | |
473 | { | |
474 | struct isopcb tmppcb; | |
475 | int err; | |
476 | int flags; | |
477 | register struct mbuf *m = m0; | |
478 | ||
479 | IFDEBUG(D_TPISO) | |
480 | printf("tpclnp_output_dg datalen 0x%x m0 0x%x\n", datalen, m0); | |
481 | ENDDEBUG | |
482 | ||
483 | /* | |
484 | * Fill in minimal portion of isopcb so that clnp can send the | |
485 | * packet. | |
486 | */ | |
487 | bzero((caddr_t)&tmppcb, sizeof(tmppcb)); | |
488 | tmppcb.isop_laddr = &tmppcb.isop_sladdr; | |
489 | tmppcb.isop_laddr->siso_addr = *laddr; | |
490 | tmppcb.isop_faddr = &tmppcb.isop_sfaddr; | |
491 | tmppcb.isop_faddr->siso_addr = *faddr; | |
492 | ||
493 | IFDEBUG(D_TPISO) | |
494 | printf("tpclnp_output_dg faddr: \n"); | |
495 | dump_isoaddr(&tmppcb.isop_sfaddr); | |
496 | printf("\ntpclnp_output_dg laddr: \n"); | |
497 | dump_isoaddr(&tmppcb.isop_sladdr); | |
498 | printf("\n"); | |
499 | ENDDEBUG | |
500 | ||
501 | /* | |
502 | * Do not use packet cache since this is a one shot error packet | |
503 | */ | |
504 | flags = (CLNP_NOCACHE|(nochksum?CLNP_NO_CKSUM:0)); | |
505 | ||
506 | IncStat(ts_tpdu_sent); | |
507 | ||
508 | err = clnp_output(m0, &tmppcb, datalen, flags); | |
509 | ||
510 | /* | |
511 | * Free route allocated by clnp (if the route was indeed allocated) | |
512 | */ | |
513 | if (tmppcb.isop_route.ro_rt) | |
514 | RTFREE(tmppcb.isop_route.ro_rt); | |
515 | ||
516 | return(err); | |
517 | } | |
518 | /* | |
519 | * CALLED FROM: | |
520 | * clnp's input routine, indirectly through the protosw. | |
521 | * FUNCTION and ARGUMENTS: | |
522 | * Take a packet (m) from clnp, strip off the clnp header and give it to tp | |
523 | * No return value. | |
524 | */ | |
525 | ProtoHook | |
526 | tpclnp_input(m, src, dst, clnp_len, ce_bit) | |
527 | register struct mbuf *m; | |
528 | struct sockaddr_iso *src, *dst; | |
529 | int clnp_len, ce_bit; | |
530 | { | |
531 | int s = splnet(); | |
532 | struct mbuf *tp_inputprep(); | |
533 | int tp_input(), cltp_input(), (*input)() = tp_input; | |
534 | ||
535 | IncStat(ts_pkt_rcvd); | |
536 | ||
537 | IFDEBUG(D_TPINPUT) | |
538 | printf("tpclnp_input: m 0x%x clnp_len 0x%x\n", m, clnp_len); | |
539 | dump_mbuf(m, "at tpclnp_input"); | |
540 | ENDDEBUG | |
541 | /* | |
542 | * CLNP gives us an mbuf chain WITH the clnp header pulled up, | |
543 | * and the length of the clnp header. | |
544 | * First, strip off the Clnp header. leave the mbuf there for the | |
545 | * pullup that follows. | |
546 | */ | |
547 | ||
548 | m->m_len -= clnp_len; | |
549 | m->m_data += clnp_len; | |
550 | ||
551 | m = tp_inputprep(m); | |
552 | if (m == 0) | |
553 | return 0; | |
554 | if (mtod(m, u_char *)[1] == UD_TPDU_type) | |
555 | input = cltp_input; | |
556 | ||
557 | IFDEBUG(D_TPINPUT) | |
558 | dump_mbuf(m, "after tpclnp_input both pullups"); | |
559 | ENDDEBUG | |
560 | ||
561 | IFDEBUG(D_TPISO) | |
562 | printf("calling %sinput : src 0x%x, dst 0x%x, src addr:\n", | |
563 | (input == tp_input ? "tp_" : "clts_"), src, dst); | |
564 | dump_isoaddr(src); | |
565 | printf(" dst addr:\n"); | |
566 | dump_isoaddr(dst); | |
567 | ENDDEBUG | |
568 | ||
569 | (void) (*input)(m, (struct sockaddr *)src, (struct sockaddr *)dst, | |
570 | 0, tpclnp_output_dg, ce_bit); | |
571 | ||
572 | IFDEBUG(D_QUENCH) | |
573 | { | |
574 | if(time.tv_usec & 0x4 && time.tv_usec & 0x40) { | |
575 | printf("tpclnp_input: FAKING %s\n", | |
576 | tp_stat.ts_pkt_rcvd & 0x1?"QUENCH":"QUENCH2"); | |
577 | if(tp_stat.ts_pkt_rcvd & 0x1) { | |
578 | tpclnp_ctlinput(PRC_QUENCH, &src); | |
579 | } else { | |
580 | tpclnp_ctlinput(PRC_QUENCH2, &src); | |
581 | } | |
582 | } | |
583 | } | |
584 | ENDDEBUG | |
585 | ||
586 | splx(s); | |
587 | return 0; | |
588 | } | |
589 | ||
590 | ProtoHook | |
591 | iso_rtchange() | |
592 | { | |
593 | return 0; | |
594 | } | |
595 | ||
596 | /* | |
597 | * CALLED FROM: | |
598 | * tpclnp_ctlinput() | |
599 | * FUNCTION and ARGUMENTS: | |
600 | * find the tpcb pointer and pass it to tp_quench | |
601 | */ | |
602 | void | |
603 | tpiso_decbit(isop) | |
604 | struct isopcb *isop; | |
605 | { | |
606 | tp_quench((struct tp_pcb *)isop->isop_socket->so_tpcb, PRC_QUENCH2); | |
607 | } | |
608 | /* | |
609 | * CALLED FROM: | |
610 | * tpclnp_ctlinput() | |
611 | * FUNCTION and ARGUMENTS: | |
612 | * find the tpcb pointer and pass it to tp_quench | |
613 | */ | |
614 | void | |
615 | tpiso_quench(isop) | |
616 | struct isopcb *isop; | |
617 | { | |
618 | tp_quench((struct tp_pcb *)isop->isop_socket->so_tpcb, PRC_QUENCH); | |
619 | } | |
620 | ||
621 | /* | |
622 | * CALLED FROM: | |
623 | * The network layer through the protosw table. | |
624 | * FUNCTION and ARGUMENTS: | |
625 | * When clnp an ICMP-like msg this gets called. | |
626 | * It either returns an error status to the user or | |
627 | * it causes all connections on this address to be aborted | |
628 | * by calling the appropriate xx_notify() routine. | |
629 | * (cmd) is the type of ICMP error. | |
630 | * (siso) is the address of the guy who sent the ER CLNPDU | |
631 | */ | |
632 | ProtoHook | |
633 | tpclnp_ctlinput(cmd, siso) | |
634 | int cmd; | |
635 | struct sockaddr_iso *siso; | |
636 | { | |
637 | extern u_char inetctlerrmap[]; | |
638 | extern ProtoHook tpiso_abort(); | |
639 | extern ProtoHook iso_rtchange(); | |
640 | extern ProtoHook tpiso_reset(); | |
641 | void iso_pcbnotify(); | |
642 | ||
643 | IFDEBUG(D_TPINPUT) | |
644 | printf("tpclnp_ctlinput1: cmd 0x%x addr: \n", cmd); | |
645 | dump_isoaddr(siso); | |
646 | ENDDEBUG | |
647 | ||
648 | if (cmd < 0 || cmd > PRC_NCMDS) | |
649 | return 0; | |
650 | if (siso->siso_family != AF_ISO) | |
651 | return 0; | |
652 | switch (cmd) { | |
653 | ||
654 | case PRC_QUENCH2: | |
655 | iso_pcbnotify(&tp_isopcb, siso, 0, (int (*)())tpiso_decbit); | |
656 | break; | |
657 | ||
658 | case PRC_QUENCH: | |
659 | iso_pcbnotify(&tp_isopcb, siso, 0, (int (*)())tpiso_quench); | |
660 | break; | |
661 | ||
662 | case PRC_TIMXCEED_REASS: | |
663 | case PRC_ROUTEDEAD: | |
664 | iso_pcbnotify(&tp_isopcb, siso, 0, tpiso_reset); | |
665 | break; | |
666 | ||
667 | case PRC_HOSTUNREACH: | |
668 | case PRC_UNREACH_NET: | |
669 | case PRC_IFDOWN: | |
670 | case PRC_HOSTDEAD: | |
671 | iso_pcbnotify(&tp_isopcb, siso, | |
672 | (int)inetctlerrmap[cmd], iso_rtchange); | |
673 | break; | |
674 | ||
675 | default: | |
676 | /* | |
677 | case PRC_MSGSIZE: | |
678 | case PRC_UNREACH_HOST: | |
679 | case PRC_UNREACH_PROTOCOL: | |
680 | case PRC_UNREACH_PORT: | |
681 | case PRC_UNREACH_NEEDFRAG: | |
682 | case PRC_UNREACH_SRCFAIL: | |
683 | case PRC_REDIRECT_NET: | |
684 | case PRC_REDIRECT_HOST: | |
685 | case PRC_REDIRECT_TOSNET: | |
686 | case PRC_REDIRECT_TOSHOST: | |
687 | case PRC_TIMXCEED_INTRANS: | |
688 | case PRC_PARAMPROB: | |
689 | */ | |
690 | iso_pcbnotify(&tp_isopcb, siso, (int)inetctlerrmap[cmd], tpiso_abort); | |
691 | break; | |
692 | } | |
693 | return 0; | |
694 | } | |
695 | /* | |
696 | * XXX - Variant which is called by clnp_er.c with an isoaddr rather | |
697 | * than a sockaddr_iso. | |
698 | */ | |
699 | ||
700 | static struct sockaddr_iso siso = {sizeof(siso), AF_ISO}; | |
701 | tpclnp_ctlinput1(cmd, isoa) | |
702 | int cmd; | |
703 | struct iso_addr *isoa; | |
704 | { | |
705 | bzero((caddr_t)&siso.siso_addr, sizeof(siso.siso_addr)); | |
706 | bcopy((caddr_t)isoa, (caddr_t)&siso.siso_addr, isoa->isoa_len); | |
707 | tpclnp_ctlinput(cmd, &siso); | |
708 | } | |
709 | ||
710 | /* | |
711 | * These next 2 routines are | |
712 | * CALLED FROM: | |
713 | * xxx_notify() from tp_ctlinput() when | |
714 | * net level gets some ICMP-equiv. type event. | |
715 | * FUNCTION and ARGUMENTS: | |
716 | * Cause the connection to be aborted with some sort of error | |
717 | * reason indicating that the network layer caused the abort. | |
718 | * Fakes an ER TPDU so we can go through the driver. | |
719 | * abort always aborts the TP connection. | |
720 | * reset may or may not, depending on the TP class that's in use. | |
721 | */ | |
722 | ProtoHook | |
723 | tpiso_abort(isop) | |
724 | struct isopcb *isop; | |
725 | { | |
726 | struct tp_event e; | |
727 | ||
728 | IFDEBUG(D_CONN) | |
729 | printf("tpiso_abort 0x%x\n", isop); | |
730 | ENDDEBUG | |
731 | e.ev_number = ER_TPDU; | |
732 | e.ATTR(ER_TPDU).e_reason = ECONNABORTED; | |
733 | return tp_driver((struct tp_pcb *)isop->isop_socket->so_tpcb, &e); | |
734 | } | |
735 | ||
736 | ProtoHook | |
737 | tpiso_reset(isop) | |
738 | struct isopcb *isop; | |
739 | { | |
740 | struct tp_event e; | |
741 | ||
742 | e.ev_number = T_NETRESET; | |
743 | return tp_driver((struct tp_pcb *)isop->isop_socket->so_tpcb, &e); | |
744 | ||
745 | } | |
746 | ||
747 | #endif ISO |