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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 | * | |
f501b4b9 | 7 | * @(#)tp_inet.c 7.10 (Berkeley) %G% |
7bcd1bb8 KB |
8 | */ |
9 | ||
2f41dd0f 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 | * ARGO TP | |
38 | * $Header: tp_inet.c,v 5.3 88/11/18 17:27:29 nhall Exp $ | |
39 | * $Source: /usr/argo/sys/netiso/RCS/tp_inet.c,v $ | |
40 | * | |
41 | * Here is where you find the inet-dependent code. We've tried | |
42 | * keep all net-level and (primarily) address-family-dependent stuff | |
43 | * out of the tp source, and everthing here is reached indirectly | |
44 | * through a switch table (struct nl_protosw *) tpcb->tp_nlproto | |
45 | * (see tp_pcb.c). | |
46 | * The routines here are: | |
7bcd1bb8 KB |
47 | * in_getsufx: gets transport suffix out of an inpcb structure. |
48 | * in_putsufx: put transport suffix into an inpcb structure. | |
49 | * in_putnetaddr: put a whole net addr into an inpcb. | |
50 | * in_getnetaddr: get a whole net addr from an inpcb. | |
51 | * in_cmpnetaddr: compare a whole net addr from an isopcb. | |
52 | * in_recycle_suffix: clear suffix for reuse in inpcb | |
53 | * tpip_mtu: figure out what size tpdu to use | |
54 | * tpip_input: take a pkt from ip, strip off its ip header, give to tp | |
55 | * tpip_output_dg: package a pkt for ip given 2 addresses & some data | |
56 | * tpip_output: package a pkt for ip given an inpcb & some data | |
2f41dd0f KS |
57 | */ |
58 | ||
2f41dd0f KS |
59 | #ifdef INET |
60 | ||
a50e2bc0 | 61 | #include "param.h" |
2f41dd0f KS |
62 | #include "socket.h" |
63 | #include "socketvar.h" | |
64 | #include "mbuf.h" | |
65 | #include "errno.h" | |
66 | #include "time.h" | |
67 | #include "../net/if.h" | |
a50e2bc0 KS |
68 | #include "tp_param.h" |
69 | #include "argo_debug.h" | |
70 | #include "tp_stat.h" | |
71 | #include "tp_ip.h" | |
72 | #include "tp_pcb.h" | |
73 | #include "tp_trace.h" | |
74 | #include "tp_stat.h" | |
75 | #include "tp_tpdu.h" | |
2f41dd0f KS |
76 | #include "../netinet/in_var.h" |
77 | ||
a50e2bc0 KS |
78 | #ifndef ISO |
79 | #include "iso_chksum.c" | |
80 | #endif | |
2f41dd0f KS |
81 | |
82 | /* | |
83 | * NAME: in_getsufx() | |
84 | ||
85 | * CALLED FROM: pr_usrreq() on PRU_BIND, | |
86 | * PRU_CONNECT, PRU_ACCEPT, and PRU_PEERADDR | |
87 | * | |
88 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
89 | * Get a transport suffix from an inpcb structure (inp). | |
90 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
91 | * | |
92 | * RETURNS: internet port / transport suffix | |
93 | * (CAST TO AN INT) | |
94 | * | |
95 | * SIDE EFFECTS: | |
96 | * | |
97 | * NOTES: | |
98 | */ | |
a50e2bc0 | 99 | in_getsufx(inp, lenp, data_out, which) |
2f41dd0f | 100 | struct inpcb *inp; |
a50e2bc0 KS |
101 | u_short *lenp; |
102 | caddr_t data_out; | |
2f41dd0f KS |
103 | int which; |
104 | { | |
a50e2bc0 | 105 | *lenp = sizeof(u_short); |
2f41dd0f KS |
106 | switch (which) { |
107 | case TP_LOCAL: | |
a50e2bc0 KS |
108 | *(u_short *)data_out = inp->inp_lport; |
109 | return; | |
2f41dd0f KS |
110 | |
111 | case TP_FOREIGN: | |
a50e2bc0 | 112 | *(u_short *)data_out = inp->inp_fport; |
2f41dd0f | 113 | } |
a50e2bc0 | 114 | |
2f41dd0f KS |
115 | } |
116 | ||
117 | /* | |
118 | * NAME: in_putsufx() | |
119 | * | |
120 | * CALLED FROM: tp_newsocket(); i.e., when a connection | |
121 | * is being established by an incoming CR_TPDU. | |
122 | * | |
123 | * FUNCTION, ARGUMENTS: | |
124 | * Put a transport suffix (found in name) into an inpcb structure (inp). | |
125 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
126 | * | |
127 | * RETURNS: Nada | |
128 | * | |
129 | * SIDE EFFECTS: | |
130 | * | |
131 | * NOTES: | |
132 | */ | |
a50e2bc0 | 133 | /*ARGSUSED*/ |
2f41dd0f | 134 | void |
a50e2bc0 | 135 | in_putsufx(inp, sufxloc, sufxlen, which) |
2f41dd0f | 136 | struct inpcb *inp; |
a50e2bc0 | 137 | caddr_t sufxloc; |
2f41dd0f KS |
138 | int which; |
139 | { | |
a50e2bc0 KS |
140 | if (which == TP_FOREIGN) { |
141 | bcopy(sufxloc, (caddr_t)&inp->inp_fport, sizeof(inp->inp_fport)); | |
2f41dd0f KS |
142 | } |
143 | } | |
144 | ||
145 | /* | |
146 | * NAME: in_recycle_tsuffix() | |
147 | * | |
148 | * CALLED FROM: tp.trans whenever we go into REFWAIT state. | |
149 | * | |
150 | * FUNCTION and ARGUMENT: | |
151 | * Called when a ref is frozen, to allow the suffix to be reused. | |
152 | * (inp) is the net level pcb. | |
153 | * | |
154 | * RETURNS: Nada | |
155 | * | |
156 | * SIDE EFFECTS: | |
157 | * | |
158 | * NOTES: This really shouldn't have to be done in a NET level pcb | |
159 | * but... for the internet world that just the way it is done in BSD... | |
160 | * The alternative is to have the port unusable until the reference | |
161 | * timer goes off. | |
162 | */ | |
163 | void | |
164 | in_recycle_tsuffix(inp) | |
165 | struct inpcb *inp; | |
166 | { | |
167 | inp->inp_fport = inp->inp_lport = 0; | |
168 | } | |
169 | ||
170 | /* | |
171 | * NAME: in_putnetaddr() | |
172 | * | |
173 | * CALLED FROM: | |
174 | * tp_newsocket(); i.e., when a connection is being established by an | |
175 | * incoming CR_TPDU. | |
176 | * | |
177 | * FUNCTION and ARGUMENTS: | |
178 | * Copy a whole net addr from a struct sockaddr (name). | |
179 | * into an inpcb (inp). | |
180 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
181 | * | |
182 | * RETURNS: Nada | |
183 | * | |
184 | * SIDE EFFECTS: | |
185 | * | |
186 | * NOTES: | |
187 | */ | |
188 | void | |
189 | in_putnetaddr(inp, name, which) | |
190 | register struct inpcb *inp; | |
191 | struct sockaddr_in *name; | |
192 | int which; | |
193 | { | |
194 | switch (which) { | |
195 | case TP_LOCAL: | |
196 | bcopy((caddr_t)&name->sin_addr, | |
197 | (caddr_t)&inp->inp_laddr, sizeof(struct in_addr)); | |
198 | /* won't work if the dst address (name) is INADDR_ANY */ | |
199 | ||
200 | break; | |
201 | case TP_FOREIGN: | |
202 | if( name != (struct sockaddr_in *)0 ) { | |
203 | bcopy((caddr_t)&name->sin_addr, | |
204 | (caddr_t)&inp->inp_faddr, sizeof(struct in_addr)); | |
205 | } | |
206 | } | |
207 | } | |
208 | ||
63f88aec KS |
209 | /* |
210 | * NAME: in_putnetaddr() | |
211 | * | |
212 | * CALLED FROM: | |
213 | * tp_input() when a connection is being established by an | |
214 | * incoming CR_TPDU, and considered for interception. | |
215 | * | |
216 | * FUNCTION and ARGUMENTS: | |
217 | * Compare a whole net addr from a struct sockaddr (name), | |
218 | * with that implicitly stored in an inpcb (inp). | |
219 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
220 | * | |
221 | * RETURNS: Nada | |
222 | * | |
223 | * SIDE EFFECTS: | |
224 | * | |
225 | * NOTES: | |
226 | */ | |
227 | in_cmpnetaddr(inp, name, which) | |
228 | register struct inpcb *inp; | |
229 | register struct sockaddr_in *name; | |
230 | int which; | |
231 | { | |
232 | if (which == TP_LOCAL) { | |
233 | if (name->sin_port && name->sin_port != inp->inp_lport) | |
234 | return 0; | |
235 | return (name->sin_addr.s_addr == inp->inp_laddr.s_addr); | |
236 | } | |
237 | if (name->sin_port && name->sin_port != inp->inp_fport) | |
238 | return 0; | |
239 | return (name->sin_addr.s_addr == inp->inp_faddr.s_addr); | |
240 | } | |
241 | ||
2f41dd0f KS |
242 | /* |
243 | * NAME: in_getnetaddr() | |
244 | * | |
245 | * CALLED FROM: | |
246 | * pr_usrreq() PRU_SOCKADDR, PRU_ACCEPT, PRU_PEERADDR | |
247 | * FUNCTION and ARGUMENTS: | |
248 | * Copy a whole net addr from an inpcb (inp) into | |
a50e2bc0 | 249 | * an mbuf (name); |
2f41dd0f KS |
250 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN. |
251 | * | |
252 | * RETURNS: Nada | |
253 | * | |
254 | * SIDE EFFECTS: | |
255 | * | |
256 | * NOTES: | |
257 | */ | |
258 | ||
259 | void | |
260 | in_getnetaddr( inp, name, which) | |
a50e2bc0 | 261 | register struct mbuf *name; |
2f41dd0f | 262 | struct inpcb *inp; |
2f41dd0f KS |
263 | int which; |
264 | { | |
a50e2bc0 KS |
265 | register struct sockaddr_in *sin = mtod(name, struct sockaddr_in *); |
266 | bzero((caddr_t)sin, sizeof(*sin)); | |
2f41dd0f KS |
267 | switch (which) { |
268 | case TP_LOCAL: | |
a50e2bc0 KS |
269 | sin->sin_addr = inp->inp_laddr; |
270 | sin->sin_port = inp->inp_lport; | |
2f41dd0f | 271 | break; |
2f41dd0f | 272 | case TP_FOREIGN: |
a50e2bc0 KS |
273 | sin->sin_addr = inp->inp_faddr; |
274 | sin->sin_port = inp->inp_fport; | |
2f41dd0f | 275 | break; |
a50e2bc0 KS |
276 | default: |
277 | return; | |
2f41dd0f | 278 | } |
a50e2bc0 KS |
279 | name->m_len = sin->sin_len = sizeof (*sin); |
280 | sin->sin_family = AF_INET; | |
2f41dd0f KS |
281 | } |
282 | ||
283 | /* | |
284 | * NAME: tpip_mtu() | |
285 | * | |
286 | * CALLED FROM: | |
f501b4b9 | 287 | * tp_route_to() on incoming CR, CC, and pr_usrreq() for PRU_CONNECT |
2f41dd0f KS |
288 | * |
289 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
290 | * | |
f501b4b9 KS |
291 | * Perform subnetwork dependent part of determining MTU information. |
292 | * It appears that setting a double pointer to the rtentry associated with | |
293 | * the destination, and returning the header size for the network protocol | |
294 | * suffices. | |
2f41dd0f KS |
295 | * |
296 | * SIDE EFFECTS: | |
f501b4b9 | 297 | * Sets tp_routep pointer in pcb. |
2f41dd0f KS |
298 | * |
299 | * NOTES: | |
300 | */ | |
301 | ||
f501b4b9 KS |
302 | tpip_mtu(tpcb) |
303 | register struct tp_pcb *tpcb; | |
2f41dd0f | 304 | { |
f501b4b9 | 305 | struct inpcb *inp = (struct inpcb *)tpcb->tp_npcb; |
2f41dd0f KS |
306 | |
307 | IFDEBUG(D_CONN) | |
f501b4b9 KS |
308 | printf("tpip_mtu(tpcb)\n", tpcb); |
309 | printf("tpip_mtu routing to addr 0x%x\n", inp->inp_faddr.s_addr); | |
2f41dd0f | 310 | ENDDEBUG |
f501b4b9 KS |
311 | tpcb->tp_routep = &(inp->inp_route.ro_rt); |
312 | return (sizeof (struct ip)); | |
2f41dd0f KS |
313 | |
314 | } | |
315 | ||
316 | /* | |
317 | * NAME: tpip_output() | |
318 | * | |
319 | * CALLED FROM: tp_emit() | |
320 | * | |
321 | * FUNCTION and ARGUMENTS: | |
322 | * Take a packet(m0) from tp and package it so that ip will accept it. | |
323 | * This means prepending space for the ip header and filling in a few | |
324 | * of the fields. | |
325 | * inp is the inpcb structure; datalen is the length of the data in the | |
326 | * mbuf string m0. | |
327 | * RETURNS: | |
328 | * whatever (E*) is returned form the net layer output routine. | |
329 | * | |
330 | * SIDE EFFECTS: | |
331 | * | |
332 | * NOTES: | |
333 | */ | |
334 | ||
335 | int | |
336 | tpip_output(inp, m0, datalen, nochksum) | |
337 | struct inpcb *inp; | |
338 | struct mbuf *m0; | |
339 | int datalen; | |
340 | int nochksum; | |
341 | { | |
342 | return tpip_output_dg( &inp->inp_laddr, &inp->inp_faddr, m0, datalen, | |
343 | &inp->inp_route, nochksum); | |
344 | } | |
345 | ||
346 | /* | |
347 | * NAME: tpip_output_dg() | |
348 | * | |
349 | * CALLED FROM: tp_error_emit() | |
350 | * | |
351 | * FUNCTION and ARGUMENTS: | |
352 | * This is a copy of tpip_output that takes the addresses | |
353 | * instead of a pcb. It's used by the tp_error_emit, when we | |
354 | * don't have an in_pcb with which to call the normal output rtn. | |
355 | * | |
356 | * RETURNS: ENOBUFS or whatever (E*) is | |
357 | * returned form the net layer output routine. | |
358 | * | |
359 | * SIDE EFFECTS: | |
360 | * | |
361 | * NOTES: | |
362 | */ | |
363 | ||
a50e2bc0 | 364 | /*ARGSUSED*/ |
2f41dd0f KS |
365 | int |
366 | tpip_output_dg(laddr, faddr, m0, datalen, ro, nochksum) | |
367 | struct in_addr *laddr, *faddr; | |
368 | struct mbuf *m0; | |
369 | int datalen; | |
370 | struct route *ro; | |
371 | int nochksum; | |
372 | { | |
373 | register struct mbuf *m; | |
374 | register struct ip *ip; | |
375 | int error; | |
376 | ||
377 | IFDEBUG(D_EMIT) | |
378 | printf("tpip_output_dg datalen 0x%x m0 0x%x\n", datalen, m0); | |
379 | ENDDEBUG | |
380 | ||
381 | ||
a50e2bc0 | 382 | MGETHDR(m, M_DONTWAIT, TPMT_IPHDR); |
2f41dd0f KS |
383 | if (m == 0) { |
384 | error = ENOBUFS; | |
385 | goto bad; | |
386 | } | |
2f41dd0f | 387 | m->m_next = m0; |
a50e2bc0 | 388 | MH_ALIGN(m, sizeof(struct ip)); |
2f41dd0f | 389 | m->m_len = sizeof(struct ip); |
2f41dd0f KS |
390 | |
391 | ip = mtod(m, struct ip *); | |
a50e2bc0 | 392 | bzero((caddr_t)ip, sizeof *ip); |
2f41dd0f KS |
393 | |
394 | ip->ip_p = IPPROTO_TP; | |
a50e2bc0 | 395 | m->m_pkthdr.len = ip->ip_len = sizeof(struct ip) + datalen; |
2f41dd0f KS |
396 | ip->ip_ttl = MAXTTL; |
397 | /* don't know why you need to set ttl; | |
398 | * overlay doesn't even make this available | |
399 | */ | |
400 | ||
401 | ip->ip_src = *laddr; | |
402 | ip->ip_dst = *faddr; | |
403 | ||
404 | IncStat(ts_tpdu_sent); | |
405 | IFDEBUG(D_EMIT) | |
406 | dump_mbuf(m, "tpip_output_dg before ip_output\n"); | |
407 | ENDDEBUG | |
408 | ||
409 | error = ip_output(m, (struct mbuf *)0, ro, IP_ALLOWBROADCAST); | |
410 | ||
411 | IFDEBUG(D_EMIT) | |
412 | printf("tpip_output_dg after ip_output\n"); | |
413 | ENDDEBUG | |
414 | ||
415 | return error; | |
416 | ||
417 | bad: | |
418 | m_freem(m); | |
419 | IncStat(ts_send_drop); | |
420 | return error; | |
421 | } | |
422 | ||
423 | /* | |
424 | * NAME: tpip_input() | |
425 | * | |
426 | * CALLED FROM: | |
427 | * ip's input routine, indirectly through the protosw. | |
428 | * | |
429 | * FUNCTION and ARGUMENTS: | |
430 | * Take a packet (m) from ip, strip off the ip header and give it to tp | |
431 | * | |
432 | * RETURNS: No return value. | |
433 | * | |
434 | * SIDE EFFECTS: | |
435 | * | |
436 | * NOTES: | |
437 | */ | |
438 | ProtoHook | |
a50e2bc0 | 439 | tpip_input(m, iplen) |
2f41dd0f | 440 | struct mbuf *m; |
a50e2bc0 | 441 | int iplen; |
2f41dd0f | 442 | { |
2f41dd0f KS |
443 | struct sockaddr_in src, dst; |
444 | register struct ip *ip; | |
a50e2bc0 | 445 | int s = splnet(), hdrlen; |
2f41dd0f KS |
446 | |
447 | IncStat(ts_pkt_rcvd); | |
448 | ||
a50e2bc0 KS |
449 | /* |
450 | * IP layer has already pulled up the IP header, | |
451 | * but the first byte after the IP header may not be there, | |
452 | * e.g. if you came in via loopback, so you have to do an | |
453 | * m_pullup to before you can even look to see how much you | |
454 | * really need. The good news is that m_pullup will round | |
455 | * up to almost the next mbuf's worth. | |
456 | */ | |
2f41dd0f | 457 | |
a50e2bc0 KS |
458 | |
459 | if((m = m_pullup(m, iplen + 1)) == MNULL) | |
460 | goto discard; | |
2f41dd0f KS |
461 | CHANGE_MTYPE(m, TPMT_DATA); |
462 | ||
463 | /* | |
a50e2bc0 KS |
464 | * Now pull up the whole tp header: |
465 | * Unfortunately, there may be IP options to skip past so we | |
466 | * just fetch it as an unsigned char. | |
2f41dd0f | 467 | */ |
a50e2bc0 | 468 | hdrlen = iplen + 1 + mtod(m, u_char *)[iplen]; |
2f41dd0f | 469 | |
a50e2bc0 KS |
470 | if( m->m_len < hdrlen ) { |
471 | if((m = m_pullup(m, hdrlen)) == MNULL){ | |
2f41dd0f KS |
472 | IFDEBUG(D_TPINPUT) |
473 | printf("tp_input, pullup 2!\n"); | |
474 | ENDDEBUG | |
475 | goto discard; | |
476 | } | |
477 | } | |
478 | /* | |
479 | * cannot use tp_inputprep() here 'cause you don't | |
480 | * have quite the same situation | |
481 | */ | |
482 | ||
483 | IFDEBUG(D_TPINPUT) | |
484 | dump_mbuf(m, "after tpip_input both pullups"); | |
485 | ENDDEBUG | |
486 | /* | |
487 | * m_pullup may have returned a different mbuf | |
488 | */ | |
a50e2bc0 | 489 | ip = mtod(m, struct ip *); |
2f41dd0f KS |
490 | |
491 | /* | |
492 | * drop the ip header from the front of the mbuf | |
493 | * this is necessary for the tp checksum | |
494 | */ | |
a50e2bc0 KS |
495 | m->m_len -= iplen; |
496 | m->m_data += iplen; | |
2f41dd0f KS |
497 | |
498 | src.sin_addr = *(struct in_addr *)&(ip->ip_src); | |
499 | src.sin_family = AF_INET; | |
a50e2bc0 | 500 | src.sin_len = sizeof(src); |
2f41dd0f KS |
501 | dst.sin_addr = *(struct in_addr *)&(ip->ip_dst); |
502 | dst.sin_family = AF_INET; | |
a50e2bc0 | 503 | dst.sin_len = sizeof(dst); |
2f41dd0f | 504 | |
a50e2bc0 | 505 | (void) tp_input(m, (struct sockaddr *)&src, (struct sockaddr *)&dst, |
41fac7bb | 506 | 0, tpip_output_dg, 0); |
2f41dd0f KS |
507 | return 0; |
508 | ||
509 | discard: | |
510 | IFDEBUG(D_TPINPUT) | |
511 | printf("tpip_input DISCARD\n"); | |
512 | ENDDEBUG | |
513 | IFTRACE(D_TPINPUT) | |
514 | tptrace(TPPTmisc, "tpip_input DISCARD m", m,0,0,0); | |
515 | ENDTRACE | |
516 | m_freem(m); | |
517 | IncStat(ts_recv_drop); | |
a50e2bc0 | 518 | splx(s); |
2f41dd0f KS |
519 | return 0; |
520 | } | |
521 | ||
522 | ||
e663c139 | 523 | #include "protosw.h" |
2f41dd0f KS |
524 | #include "../netinet/ip_icmp.h" |
525 | ||
a50e2bc0 | 526 | extern void tp_quench(); |
2f41dd0f KS |
527 | /* |
528 | * NAME: tpin_quench() | |
529 | * | |
530 | * CALLED FROM: tpip_ctlinput() | |
531 | * | |
532 | * FUNCTION and ARGUMENTS: find the tpcb pointer and pass it to tp_quench | |
533 | * | |
534 | * RETURNS: Nada | |
535 | * | |
536 | * SIDE EFFECTS: | |
537 | * | |
538 | * NOTES: | |
539 | */ | |
540 | ||
541 | void | |
542 | tpin_quench(inp) | |
543 | struct inpcb *inp; | |
544 | { | |
f15f73d2 | 545 | tp_quench((struct tp_pcb *)inp->inp_socket->so_pcb, PRC_QUENCH); |
2f41dd0f KS |
546 | } |
547 | ||
548 | /* | |
549 | * NAME: tpip_ctlinput() | |
550 | * | |
551 | * CALLED FROM: | |
552 | * The network layer through the protosw table. | |
553 | * | |
554 | * FUNCTION and ARGUMENTS: | |
555 | * When clnp gets an ICMP msg this gets called. | |
556 | * It either returns an error status to the user or | |
557 | * causes all connections on this address to be aborted | |
558 | * by calling the appropriate xx_notify() routine. | |
559 | * (cmd) is the type of ICMP error. | |
560 | * (sa) the address of the sender | |
561 | * | |
562 | * RETURNS: Nothing | |
563 | * | |
564 | * SIDE EFFECTS: | |
565 | * | |
566 | * NOTES: | |
567 | */ | |
568 | ProtoHook | |
569 | tpip_ctlinput(cmd, sin) | |
570 | int cmd; | |
571 | struct sockaddr_in *sin; | |
572 | { | |
573 | extern u_char inetctlerrmap[]; | |
574 | extern ProtoHook tpin_abort(); | |
575 | extern ProtoHook in_rtchange(); | |
87387e5e | 576 | extern struct in_addr zeroin_addr; |
2f41dd0f KS |
577 | |
578 | if (sin->sin_family != AF_INET && sin->sin_family != AF_IMPLINK) | |
579 | return 0; | |
580 | if (sin->sin_addr.s_addr == INADDR_ANY) | |
581 | return 0; | |
582 | if (cmd < 0 || cmd > PRC_NCMDS) | |
583 | return 0; | |
584 | switch (cmd) { | |
585 | ||
586 | case PRC_QUENCH: | |
87387e5e KS |
587 | in_pcbnotify(&tp_inpcb, sin, 0, |
588 | zeroin_addr, 0, cmd, (int (*)())tp_quench); | |
2f41dd0f KS |
589 | break; |
590 | ||
591 | case PRC_ROUTEDEAD: | |
592 | case PRC_HOSTUNREACH: | |
593 | case PRC_UNREACH_NET: | |
594 | case PRC_IFDOWN: | |
595 | case PRC_HOSTDEAD: | |
87387e5e KS |
596 | in_pcbnotify(&tp_inpcb, sin, 0, |
597 | zeroin_addr, 0, cmd, in_rtchange); | |
2f41dd0f KS |
598 | break; |
599 | ||
600 | default: | |
601 | /* | |
602 | case PRC_MSGSIZE: | |
603 | case PRC_UNREACH_HOST: | |
604 | case PRC_UNREACH_PROTOCOL: | |
605 | case PRC_UNREACH_PORT: | |
606 | case PRC_UNREACH_NEEDFRAG: | |
607 | case PRC_UNREACH_SRCFAIL: | |
608 | case PRC_REDIRECT_NET: | |
609 | case PRC_REDIRECT_HOST: | |
610 | case PRC_REDIRECT_TOSNET: | |
611 | case PRC_REDIRECT_TOSHOST: | |
612 | case PRC_TIMXCEED_INTRANS: | |
613 | case PRC_TIMXCEED_REASS: | |
614 | case PRC_PARAMPROB: | |
615 | */ | |
87387e5e KS |
616 | in_pcbnotify(&tp_inpcb, sin, 0, zeroin_addr, 0, |
617 | cmd, tpin_abort); | |
2f41dd0f KS |
618 | } |
619 | return 0; | |
620 | } | |
621 | ||
622 | /* | |
623 | * NAME: tpin_abort() | |
624 | * | |
625 | * CALLED FROM: | |
626 | * xxx_notify() from tp_ctlinput() when | |
627 | * net level gets some ICMP-equiv. type event. | |
628 | * | |
629 | * FUNCTION and ARGUMENTS: | |
630 | * Cause the connection to be aborted with some sort of error | |
631 | * reason indicating that the network layer caused the abort. | |
632 | * Fakes an ER TPDU so we can go through the driver. | |
633 | * | |
634 | * RETURNS: Nothing | |
635 | * | |
636 | * SIDE EFFECTS: | |
637 | * | |
638 | * NOTES: | |
639 | */ | |
640 | ||
641 | ProtoHook | |
642 | tpin_abort(inp) | |
643 | struct inpcb *inp; | |
644 | { | |
645 | struct tp_event e; | |
646 | ||
647 | e.ev_number = ER_TPDU; | |
648 | e.ATTR(ER_TPDU).e_reason = ENETRESET; | |
a50e2bc0 | 649 | (void) tp_driver((struct tp_pcb *)inp->inp_ppcb, &e); |
2f41dd0f KS |
650 | return 0; |
651 | } | |
652 | ||
653 | #ifdef ARGO_DEBUG | |
654 | dump_inaddr(addr) | |
655 | register struct sockaddr_in *addr; | |
656 | { | |
657 | printf("INET: port 0x%x; addr 0x%x\n", addr->sin_port, addr->sin_addr); | |
658 | } | |
659 | #endif ARGO_DEBUG | |
2f41dd0f | 660 | #endif INET |