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7bcd1bb8 KB |
1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | * | |
4d8170e5 | 7 | * @(#)tp_inet.c 7.12 (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 | ||
5548a02f KB |
61 | #include <sys/param.h> |
62 | #include <sys/socket.h> | |
63 | #include <sys/socketvar.h> | |
64 | #include <sys/mbuf.h> | |
65 | #include <sys/errno.h> | |
66 | #include <sys/time.h> | |
67 | ||
68 | #include <net/if.h> | |
69 | ||
70 | #include <netiso/tp_param.h> | |
71 | #include <netiso/argo_debug.h> | |
72 | #include <netiso/tp_stat.h> | |
73 | #include <netiso/tp_ip.h> | |
74 | #include <netiso/tp_pcb.h> | |
75 | #include <netiso/tp_trace.h> | |
76 | #include <netiso/tp_stat.h> | |
77 | #include <netiso/tp_tpdu.h> | |
78 | #include <netinet/in_var.h> | |
2f41dd0f | 79 | |
a50e2bc0 | 80 | #ifndef ISO |
5548a02f | 81 | #include <netiso/iso_chksum.c> |
a50e2bc0 | 82 | #endif |
2f41dd0f KS |
83 | |
84 | /* | |
85 | * NAME: in_getsufx() | |
86 | ||
87 | * CALLED FROM: pr_usrreq() on PRU_BIND, | |
88 | * PRU_CONNECT, PRU_ACCEPT, and PRU_PEERADDR | |
89 | * | |
90 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
91 | * Get a transport suffix from an inpcb structure (inp). | |
92 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
93 | * | |
94 | * RETURNS: internet port / transport suffix | |
95 | * (CAST TO AN INT) | |
96 | * | |
97 | * SIDE EFFECTS: | |
98 | * | |
99 | * NOTES: | |
100 | */ | |
a50e2bc0 | 101 | in_getsufx(inp, lenp, data_out, which) |
2f41dd0f | 102 | struct inpcb *inp; |
a50e2bc0 KS |
103 | u_short *lenp; |
104 | caddr_t data_out; | |
2f41dd0f KS |
105 | int which; |
106 | { | |
a50e2bc0 | 107 | *lenp = sizeof(u_short); |
2f41dd0f KS |
108 | switch (which) { |
109 | case TP_LOCAL: | |
a50e2bc0 KS |
110 | *(u_short *)data_out = inp->inp_lport; |
111 | return; | |
2f41dd0f KS |
112 | |
113 | case TP_FOREIGN: | |
a50e2bc0 | 114 | *(u_short *)data_out = inp->inp_fport; |
2f41dd0f | 115 | } |
a50e2bc0 | 116 | |
2f41dd0f KS |
117 | } |
118 | ||
119 | /* | |
120 | * NAME: in_putsufx() | |
121 | * | |
122 | * CALLED FROM: tp_newsocket(); i.e., when a connection | |
123 | * is being established by an incoming CR_TPDU. | |
124 | * | |
125 | * FUNCTION, ARGUMENTS: | |
126 | * Put a transport suffix (found in name) into an inpcb structure (inp). | |
127 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
128 | * | |
129 | * RETURNS: Nada | |
130 | * | |
131 | * SIDE EFFECTS: | |
132 | * | |
133 | * NOTES: | |
134 | */ | |
a50e2bc0 | 135 | /*ARGSUSED*/ |
2f41dd0f | 136 | void |
a50e2bc0 | 137 | in_putsufx(inp, sufxloc, sufxlen, which) |
2f41dd0f | 138 | struct inpcb *inp; |
a50e2bc0 | 139 | caddr_t sufxloc; |
2f41dd0f KS |
140 | int which; |
141 | { | |
a50e2bc0 KS |
142 | if (which == TP_FOREIGN) { |
143 | bcopy(sufxloc, (caddr_t)&inp->inp_fport, sizeof(inp->inp_fport)); | |
2f41dd0f KS |
144 | } |
145 | } | |
146 | ||
147 | /* | |
148 | * NAME: in_recycle_tsuffix() | |
149 | * | |
150 | * CALLED FROM: tp.trans whenever we go into REFWAIT state. | |
151 | * | |
152 | * FUNCTION and ARGUMENT: | |
153 | * Called when a ref is frozen, to allow the suffix to be reused. | |
154 | * (inp) is the net level pcb. | |
155 | * | |
156 | * RETURNS: Nada | |
157 | * | |
158 | * SIDE EFFECTS: | |
159 | * | |
160 | * NOTES: This really shouldn't have to be done in a NET level pcb | |
161 | * but... for the internet world that just the way it is done in BSD... | |
162 | * The alternative is to have the port unusable until the reference | |
163 | * timer goes off. | |
164 | */ | |
165 | void | |
166 | in_recycle_tsuffix(inp) | |
167 | struct inpcb *inp; | |
168 | { | |
169 | inp->inp_fport = inp->inp_lport = 0; | |
170 | } | |
171 | ||
172 | /* | |
173 | * NAME: in_putnetaddr() | |
174 | * | |
175 | * CALLED FROM: | |
176 | * tp_newsocket(); i.e., when a connection is being established by an | |
177 | * incoming CR_TPDU. | |
178 | * | |
179 | * FUNCTION and ARGUMENTS: | |
180 | * Copy a whole net addr from a struct sockaddr (name). | |
181 | * into an inpcb (inp). | |
182 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
183 | * | |
184 | * RETURNS: Nada | |
185 | * | |
186 | * SIDE EFFECTS: | |
187 | * | |
188 | * NOTES: | |
189 | */ | |
190 | void | |
191 | in_putnetaddr(inp, name, which) | |
192 | register struct inpcb *inp; | |
193 | struct sockaddr_in *name; | |
194 | int which; | |
195 | { | |
196 | switch (which) { | |
197 | case TP_LOCAL: | |
198 | bcopy((caddr_t)&name->sin_addr, | |
199 | (caddr_t)&inp->inp_laddr, sizeof(struct in_addr)); | |
200 | /* won't work if the dst address (name) is INADDR_ANY */ | |
201 | ||
202 | break; | |
203 | case TP_FOREIGN: | |
204 | if( name != (struct sockaddr_in *)0 ) { | |
205 | bcopy((caddr_t)&name->sin_addr, | |
206 | (caddr_t)&inp->inp_faddr, sizeof(struct in_addr)); | |
207 | } | |
208 | } | |
209 | } | |
210 | ||
63f88aec KS |
211 | /* |
212 | * NAME: in_putnetaddr() | |
213 | * | |
214 | * CALLED FROM: | |
215 | * tp_input() when a connection is being established by an | |
216 | * incoming CR_TPDU, and considered for interception. | |
217 | * | |
218 | * FUNCTION and ARGUMENTS: | |
219 | * Compare a whole net addr from a struct sockaddr (name), | |
220 | * with that implicitly stored in an inpcb (inp). | |
221 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
222 | * | |
223 | * RETURNS: Nada | |
224 | * | |
225 | * SIDE EFFECTS: | |
226 | * | |
227 | * NOTES: | |
228 | */ | |
229 | in_cmpnetaddr(inp, name, which) | |
230 | register struct inpcb *inp; | |
231 | register struct sockaddr_in *name; | |
232 | int which; | |
233 | { | |
234 | if (which == TP_LOCAL) { | |
235 | if (name->sin_port && name->sin_port != inp->inp_lport) | |
236 | return 0; | |
237 | return (name->sin_addr.s_addr == inp->inp_laddr.s_addr); | |
238 | } | |
239 | if (name->sin_port && name->sin_port != inp->inp_fport) | |
240 | return 0; | |
241 | return (name->sin_addr.s_addr == inp->inp_faddr.s_addr); | |
242 | } | |
243 | ||
2f41dd0f KS |
244 | /* |
245 | * NAME: in_getnetaddr() | |
246 | * | |
247 | * CALLED FROM: | |
248 | * pr_usrreq() PRU_SOCKADDR, PRU_ACCEPT, PRU_PEERADDR | |
249 | * FUNCTION and ARGUMENTS: | |
250 | * Copy a whole net addr from an inpcb (inp) into | |
a50e2bc0 | 251 | * an mbuf (name); |
2f41dd0f KS |
252 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN. |
253 | * | |
254 | * RETURNS: Nada | |
255 | * | |
256 | * SIDE EFFECTS: | |
257 | * | |
258 | * NOTES: | |
259 | */ | |
260 | ||
261 | void | |
262 | in_getnetaddr( inp, name, which) | |
a50e2bc0 | 263 | register struct mbuf *name; |
2f41dd0f | 264 | struct inpcb *inp; |
2f41dd0f KS |
265 | int which; |
266 | { | |
a50e2bc0 KS |
267 | register struct sockaddr_in *sin = mtod(name, struct sockaddr_in *); |
268 | bzero((caddr_t)sin, sizeof(*sin)); | |
2f41dd0f KS |
269 | switch (which) { |
270 | case TP_LOCAL: | |
a50e2bc0 KS |
271 | sin->sin_addr = inp->inp_laddr; |
272 | sin->sin_port = inp->inp_lport; | |
2f41dd0f | 273 | break; |
2f41dd0f | 274 | case TP_FOREIGN: |
a50e2bc0 KS |
275 | sin->sin_addr = inp->inp_faddr; |
276 | sin->sin_port = inp->inp_fport; | |
2f41dd0f | 277 | break; |
a50e2bc0 KS |
278 | default: |
279 | return; | |
2f41dd0f | 280 | } |
a50e2bc0 KS |
281 | name->m_len = sin->sin_len = sizeof (*sin); |
282 | sin->sin_family = AF_INET; | |
2f41dd0f KS |
283 | } |
284 | ||
285 | /* | |
286 | * NAME: tpip_mtu() | |
287 | * | |
288 | * CALLED FROM: | |
f501b4b9 | 289 | * tp_route_to() on incoming CR, CC, and pr_usrreq() for PRU_CONNECT |
2f41dd0f KS |
290 | * |
291 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
292 | * | |
f501b4b9 KS |
293 | * Perform subnetwork dependent part of determining MTU information. |
294 | * It appears that setting a double pointer to the rtentry associated with | |
295 | * the destination, and returning the header size for the network protocol | |
296 | * suffices. | |
2f41dd0f KS |
297 | * |
298 | * SIDE EFFECTS: | |
f501b4b9 | 299 | * Sets tp_routep pointer in pcb. |
2f41dd0f KS |
300 | * |
301 | * NOTES: | |
302 | */ | |
303 | ||
f501b4b9 KS |
304 | tpip_mtu(tpcb) |
305 | register struct tp_pcb *tpcb; | |
2f41dd0f | 306 | { |
f501b4b9 | 307 | struct inpcb *inp = (struct inpcb *)tpcb->tp_npcb; |
2f41dd0f KS |
308 | |
309 | IFDEBUG(D_CONN) | |
f501b4b9 KS |
310 | printf("tpip_mtu(tpcb)\n", tpcb); |
311 | printf("tpip_mtu routing to addr 0x%x\n", inp->inp_faddr.s_addr); | |
2f41dd0f | 312 | ENDDEBUG |
f501b4b9 KS |
313 | tpcb->tp_routep = &(inp->inp_route.ro_rt); |
314 | return (sizeof (struct ip)); | |
2f41dd0f KS |
315 | |
316 | } | |
317 | ||
318 | /* | |
319 | * NAME: tpip_output() | |
320 | * | |
321 | * CALLED FROM: tp_emit() | |
322 | * | |
323 | * FUNCTION and ARGUMENTS: | |
324 | * Take a packet(m0) from tp and package it so that ip will accept it. | |
325 | * This means prepending space for the ip header and filling in a few | |
326 | * of the fields. | |
327 | * inp is the inpcb structure; datalen is the length of the data in the | |
328 | * mbuf string m0. | |
329 | * RETURNS: | |
330 | * whatever (E*) is returned form the net layer output routine. | |
331 | * | |
332 | * SIDE EFFECTS: | |
333 | * | |
334 | * NOTES: | |
335 | */ | |
336 | ||
337 | int | |
338 | tpip_output(inp, m0, datalen, nochksum) | |
339 | struct inpcb *inp; | |
340 | struct mbuf *m0; | |
341 | int datalen; | |
342 | int nochksum; | |
343 | { | |
344 | return tpip_output_dg( &inp->inp_laddr, &inp->inp_faddr, m0, datalen, | |
345 | &inp->inp_route, nochksum); | |
346 | } | |
347 | ||
348 | /* | |
349 | * NAME: tpip_output_dg() | |
350 | * | |
351 | * CALLED FROM: tp_error_emit() | |
352 | * | |
353 | * FUNCTION and ARGUMENTS: | |
354 | * This is a copy of tpip_output that takes the addresses | |
355 | * instead of a pcb. It's used by the tp_error_emit, when we | |
356 | * don't have an in_pcb with which to call the normal output rtn. | |
357 | * | |
358 | * RETURNS: ENOBUFS or whatever (E*) is | |
359 | * returned form the net layer output routine. | |
360 | * | |
361 | * SIDE EFFECTS: | |
362 | * | |
363 | * NOTES: | |
364 | */ | |
365 | ||
a50e2bc0 | 366 | /*ARGSUSED*/ |
2f41dd0f KS |
367 | int |
368 | tpip_output_dg(laddr, faddr, m0, datalen, ro, nochksum) | |
369 | struct in_addr *laddr, *faddr; | |
370 | struct mbuf *m0; | |
371 | int datalen; | |
372 | struct route *ro; | |
373 | int nochksum; | |
374 | { | |
375 | register struct mbuf *m; | |
376 | register struct ip *ip; | |
377 | int error; | |
378 | ||
379 | IFDEBUG(D_EMIT) | |
380 | printf("tpip_output_dg datalen 0x%x m0 0x%x\n", datalen, m0); | |
381 | ENDDEBUG | |
382 | ||
383 | ||
a50e2bc0 | 384 | MGETHDR(m, M_DONTWAIT, TPMT_IPHDR); |
2f41dd0f KS |
385 | if (m == 0) { |
386 | error = ENOBUFS; | |
387 | goto bad; | |
388 | } | |
2f41dd0f | 389 | m->m_next = m0; |
a50e2bc0 | 390 | MH_ALIGN(m, sizeof(struct ip)); |
2f41dd0f | 391 | m->m_len = sizeof(struct ip); |
2f41dd0f KS |
392 | |
393 | ip = mtod(m, struct ip *); | |
a50e2bc0 | 394 | bzero((caddr_t)ip, sizeof *ip); |
2f41dd0f KS |
395 | |
396 | ip->ip_p = IPPROTO_TP; | |
a50e2bc0 | 397 | m->m_pkthdr.len = ip->ip_len = sizeof(struct ip) + datalen; |
2f41dd0f KS |
398 | ip->ip_ttl = MAXTTL; |
399 | /* don't know why you need to set ttl; | |
400 | * overlay doesn't even make this available | |
401 | */ | |
402 | ||
403 | ip->ip_src = *laddr; | |
404 | ip->ip_dst = *faddr; | |
405 | ||
406 | IncStat(ts_tpdu_sent); | |
407 | IFDEBUG(D_EMIT) | |
408 | dump_mbuf(m, "tpip_output_dg before ip_output\n"); | |
409 | ENDDEBUG | |
410 | ||
411 | error = ip_output(m, (struct mbuf *)0, ro, IP_ALLOWBROADCAST); | |
412 | ||
413 | IFDEBUG(D_EMIT) | |
414 | printf("tpip_output_dg after ip_output\n"); | |
415 | ENDDEBUG | |
416 | ||
417 | return error; | |
418 | ||
419 | bad: | |
420 | m_freem(m); | |
421 | IncStat(ts_send_drop); | |
422 | return error; | |
423 | } | |
424 | ||
425 | /* | |
426 | * NAME: tpip_input() | |
427 | * | |
428 | * CALLED FROM: | |
429 | * ip's input routine, indirectly through the protosw. | |
430 | * | |
431 | * FUNCTION and ARGUMENTS: | |
432 | * Take a packet (m) from ip, strip off the ip header and give it to tp | |
433 | * | |
434 | * RETURNS: No return value. | |
435 | * | |
436 | * SIDE EFFECTS: | |
437 | * | |
438 | * NOTES: | |
439 | */ | |
440 | ProtoHook | |
a50e2bc0 | 441 | tpip_input(m, iplen) |
2f41dd0f | 442 | struct mbuf *m; |
a50e2bc0 | 443 | int iplen; |
2f41dd0f | 444 | { |
2f41dd0f KS |
445 | struct sockaddr_in src, dst; |
446 | register struct ip *ip; | |
a50e2bc0 | 447 | int s = splnet(), hdrlen; |
2f41dd0f KS |
448 | |
449 | IncStat(ts_pkt_rcvd); | |
450 | ||
a50e2bc0 KS |
451 | /* |
452 | * IP layer has already pulled up the IP header, | |
453 | * but the first byte after the IP header may not be there, | |
454 | * e.g. if you came in via loopback, so you have to do an | |
455 | * m_pullup to before you can even look to see how much you | |
456 | * really need. The good news is that m_pullup will round | |
457 | * up to almost the next mbuf's worth. | |
458 | */ | |
2f41dd0f | 459 | |
a50e2bc0 KS |
460 | |
461 | if((m = m_pullup(m, iplen + 1)) == MNULL) | |
462 | goto discard; | |
2f41dd0f KS |
463 | CHANGE_MTYPE(m, TPMT_DATA); |
464 | ||
465 | /* | |
a50e2bc0 KS |
466 | * Now pull up the whole tp header: |
467 | * Unfortunately, there may be IP options to skip past so we | |
468 | * just fetch it as an unsigned char. | |
2f41dd0f | 469 | */ |
a50e2bc0 | 470 | hdrlen = iplen + 1 + mtod(m, u_char *)[iplen]; |
2f41dd0f | 471 | |
a50e2bc0 KS |
472 | if( m->m_len < hdrlen ) { |
473 | if((m = m_pullup(m, hdrlen)) == MNULL){ | |
2f41dd0f KS |
474 | IFDEBUG(D_TPINPUT) |
475 | printf("tp_input, pullup 2!\n"); | |
476 | ENDDEBUG | |
477 | goto discard; | |
478 | } | |
479 | } | |
480 | /* | |
481 | * cannot use tp_inputprep() here 'cause you don't | |
482 | * have quite the same situation | |
483 | */ | |
484 | ||
485 | IFDEBUG(D_TPINPUT) | |
486 | dump_mbuf(m, "after tpip_input both pullups"); | |
487 | ENDDEBUG | |
488 | /* | |
489 | * m_pullup may have returned a different mbuf | |
490 | */ | |
a50e2bc0 | 491 | ip = mtod(m, struct ip *); |
2f41dd0f KS |
492 | |
493 | /* | |
494 | * drop the ip header from the front of the mbuf | |
495 | * this is necessary for the tp checksum | |
496 | */ | |
a50e2bc0 KS |
497 | m->m_len -= iplen; |
498 | m->m_data += iplen; | |
2f41dd0f KS |
499 | |
500 | src.sin_addr = *(struct in_addr *)&(ip->ip_src); | |
501 | src.sin_family = AF_INET; | |
a50e2bc0 | 502 | src.sin_len = sizeof(src); |
2f41dd0f KS |
503 | dst.sin_addr = *(struct in_addr *)&(ip->ip_dst); |
504 | dst.sin_family = AF_INET; | |
a50e2bc0 | 505 | dst.sin_len = sizeof(dst); |
2f41dd0f | 506 | |
a50e2bc0 | 507 | (void) tp_input(m, (struct sockaddr *)&src, (struct sockaddr *)&dst, |
41fac7bb | 508 | 0, tpip_output_dg, 0); |
2f41dd0f KS |
509 | return 0; |
510 | ||
511 | discard: | |
512 | IFDEBUG(D_TPINPUT) | |
513 | printf("tpip_input DISCARD\n"); | |
514 | ENDDEBUG | |
515 | IFTRACE(D_TPINPUT) | |
516 | tptrace(TPPTmisc, "tpip_input DISCARD m", m,0,0,0); | |
517 | ENDTRACE | |
518 | m_freem(m); | |
519 | IncStat(ts_recv_drop); | |
a50e2bc0 | 520 | splx(s); |
2f41dd0f KS |
521 | return 0; |
522 | } | |
523 | ||
524 | ||
5548a02f KB |
525 | #include <sys/protosw.h> |
526 | #include <netinet/ip_icmp.h> | |
2f41dd0f | 527 | |
a50e2bc0 | 528 | extern void tp_quench(); |
2f41dd0f KS |
529 | /* |
530 | * NAME: tpin_quench() | |
531 | * | |
532 | * CALLED FROM: tpip_ctlinput() | |
533 | * | |
534 | * FUNCTION and ARGUMENTS: find the tpcb pointer and pass it to tp_quench | |
535 | * | |
536 | * RETURNS: Nada | |
537 | * | |
538 | * SIDE EFFECTS: | |
539 | * | |
540 | * NOTES: | |
541 | */ | |
542 | ||
543 | void | |
544 | tpin_quench(inp) | |
545 | struct inpcb *inp; | |
546 | { | |
f15f73d2 | 547 | tp_quench((struct tp_pcb *)inp->inp_socket->so_pcb, PRC_QUENCH); |
2f41dd0f KS |
548 | } |
549 | ||
550 | /* | |
551 | * NAME: tpip_ctlinput() | |
552 | * | |
553 | * CALLED FROM: | |
554 | * The network layer through the protosw table. | |
555 | * | |
556 | * FUNCTION and ARGUMENTS: | |
557 | * When clnp gets an ICMP msg this gets called. | |
558 | * It either returns an error status to the user or | |
559 | * causes all connections on this address to be aborted | |
560 | * by calling the appropriate xx_notify() routine. | |
561 | * (cmd) is the type of ICMP error. | |
562 | * (sa) the address of the sender | |
563 | * | |
564 | * RETURNS: Nothing | |
565 | * | |
566 | * SIDE EFFECTS: | |
567 | * | |
568 | * NOTES: | |
569 | */ | |
570 | ProtoHook | |
571 | tpip_ctlinput(cmd, sin) | |
572 | int cmd; | |
573 | struct sockaddr_in *sin; | |
574 | { | |
575 | extern u_char inetctlerrmap[]; | |
576 | extern ProtoHook tpin_abort(); | |
577 | extern ProtoHook in_rtchange(); | |
87387e5e | 578 | extern struct in_addr zeroin_addr; |
2f41dd0f KS |
579 | |
580 | if (sin->sin_family != AF_INET && sin->sin_family != AF_IMPLINK) | |
581 | return 0; | |
582 | if (sin->sin_addr.s_addr == INADDR_ANY) | |
583 | return 0; | |
584 | if (cmd < 0 || cmd > PRC_NCMDS) | |
585 | return 0; | |
586 | switch (cmd) { | |
587 | ||
588 | case PRC_QUENCH: | |
87387e5e KS |
589 | in_pcbnotify(&tp_inpcb, sin, 0, |
590 | zeroin_addr, 0, cmd, (int (*)())tp_quench); | |
2f41dd0f KS |
591 | break; |
592 | ||
593 | case PRC_ROUTEDEAD: | |
594 | case PRC_HOSTUNREACH: | |
595 | case PRC_UNREACH_NET: | |
596 | case PRC_IFDOWN: | |
597 | case PRC_HOSTDEAD: | |
87387e5e KS |
598 | in_pcbnotify(&tp_inpcb, sin, 0, |
599 | zeroin_addr, 0, cmd, in_rtchange); | |
2f41dd0f KS |
600 | break; |
601 | ||
602 | default: | |
603 | /* | |
604 | case PRC_MSGSIZE: | |
605 | case PRC_UNREACH_HOST: | |
606 | case PRC_UNREACH_PROTOCOL: | |
607 | case PRC_UNREACH_PORT: | |
608 | case PRC_UNREACH_NEEDFRAG: | |
609 | case PRC_UNREACH_SRCFAIL: | |
610 | case PRC_REDIRECT_NET: | |
611 | case PRC_REDIRECT_HOST: | |
612 | case PRC_REDIRECT_TOSNET: | |
613 | case PRC_REDIRECT_TOSHOST: | |
614 | case PRC_TIMXCEED_INTRANS: | |
615 | case PRC_TIMXCEED_REASS: | |
616 | case PRC_PARAMPROB: | |
617 | */ | |
87387e5e KS |
618 | in_pcbnotify(&tp_inpcb, sin, 0, zeroin_addr, 0, |
619 | cmd, tpin_abort); | |
2f41dd0f KS |
620 | } |
621 | return 0; | |
622 | } | |
623 | ||
624 | /* | |
625 | * NAME: tpin_abort() | |
626 | * | |
627 | * CALLED FROM: | |
628 | * xxx_notify() from tp_ctlinput() when | |
629 | * net level gets some ICMP-equiv. type event. | |
630 | * | |
631 | * FUNCTION and ARGUMENTS: | |
632 | * Cause the connection to be aborted with some sort of error | |
633 | * reason indicating that the network layer caused the abort. | |
634 | * Fakes an ER TPDU so we can go through the driver. | |
635 | * | |
636 | * RETURNS: Nothing | |
637 | * | |
638 | * SIDE EFFECTS: | |
639 | * | |
640 | * NOTES: | |
641 | */ | |
642 | ||
643 | ProtoHook | |
644 | tpin_abort(inp) | |
645 | struct inpcb *inp; | |
646 | { | |
647 | struct tp_event e; | |
648 | ||
649 | e.ev_number = ER_TPDU; | |
650 | e.ATTR(ER_TPDU).e_reason = ENETRESET; | |
a50e2bc0 | 651 | (void) tp_driver((struct tp_pcb *)inp->inp_ppcb, &e); |
2f41dd0f KS |
652 | return 0; |
653 | } | |
654 | ||
655 | #ifdef ARGO_DEBUG | |
656 | dump_inaddr(addr) | |
657 | register struct sockaddr_in *addr; | |
658 | { | |
659 | printf("INET: port 0x%x; addr 0x%x\n", addr->sin_port, addr->sin_addr); | |
660 | } | |
4d8170e5 KB |
661 | #endif /* ARGO_DEBUG */ |
662 | #endif /* INET */ |