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1 | /*********************************************************** |
2 | Copyright IBM Corporation 1987 | |
3 | ||
4 | All Rights Reserved | |
5 | ||
6 | Permission to use, copy, modify, and distribute this software and its | |
7 | documentation for any purpose and without fee is hereby granted, | |
8 | provided that the above copyright notice appear in all copies and that | |
9 | both that copyright notice and this permission notice appear in | |
10 | supporting documentation, and that the name of IBM not be | |
11 | used in advertising or publicity pertaining to distribution of the | |
12 | software without specific, written prior permission. | |
13 | ||
14 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
15 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
16 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
17 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
18 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
19 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
20 | SOFTWARE. | |
21 | ||
22 | ******************************************************************/ | |
23 | ||
24 | /* | |
25 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
26 | */ | |
27 | /* | |
28 | * ARGO TP | |
29 | * $Header: tp_inet.c,v 5.3 88/11/18 17:27:29 nhall Exp $ | |
30 | * $Source: /usr/argo/sys/netiso/RCS/tp_inet.c,v $ | |
31 | * | |
32 | * Here is where you find the inet-dependent code. We've tried | |
33 | * keep all net-level and (primarily) address-family-dependent stuff | |
34 | * out of the tp source, and everthing here is reached indirectly | |
35 | * through a switch table (struct nl_protosw *) tpcb->tp_nlproto | |
36 | * (see tp_pcb.c). | |
37 | * The routines here are: | |
38 | * in_getsufx: gets transport suffix out of an inpcb structure. | |
39 | * in_putsufx: put transport suffix into an inpcb structure. | |
40 | * in_putnetaddr: put a whole net addr into an inpcb. | |
41 | * in_getnetaddr: get a whole net addr from an inpcb. | |
42 | * in_recycle_suffix: clear suffix for reuse in inpcb | |
43 | * tpip_mtu: figure out what size tpdu to use | |
44 | * tpip_input: take a pkt from ip, strip off its ip header, give to tp | |
45 | * tpip_output_dg: package a pkt for ip given 2 addresses & some data | |
46 | * tpip_output: package a pkt for ip given an inpcb & some data | |
47 | */ | |
48 | ||
49 | #ifndef lint | |
50 | static char *rcsid = "$Header: tp_inet.c,v 5.3 88/11/18 17:27:29 nhall Exp $"; | |
51 | #endif lint | |
52 | ||
53 | #ifdef INET | |
54 | ||
55 | #include "types.h" | |
56 | #include "socket.h" | |
57 | #include "socketvar.h" | |
58 | #include "mbuf.h" | |
59 | #include "errno.h" | |
60 | #include "time.h" | |
61 | #include "../net/if.h" | |
62 | #include "../netiso/tp_param.h" | |
63 | #include "../netiso/argo_debug.h" | |
64 | #include "../netiso/tp_stat.h" | |
65 | #include "../netiso/tp_ip.h" | |
66 | #include "../netiso/tp_pcb.h" | |
67 | #include "../netiso/tp_trace.h" | |
68 | #include "../netiso/tp_stat.h" | |
69 | #include "../netiso/tp_tpdu.h" | |
70 | #include "../netinet/in_var.h" | |
71 | ||
72 | ||
73 | /* | |
74 | * NAME: in_getsufx() | |
75 | ||
76 | * CALLED FROM: pr_usrreq() on PRU_BIND, | |
77 | * PRU_CONNECT, PRU_ACCEPT, and PRU_PEERADDR | |
78 | * | |
79 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
80 | * Get a transport suffix from an inpcb structure (inp). | |
81 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
82 | * | |
83 | * RETURNS: internet port / transport suffix | |
84 | * (CAST TO AN INT) | |
85 | * | |
86 | * SIDE EFFECTS: | |
87 | * | |
88 | * NOTES: | |
89 | */ | |
90 | ||
91 | int | |
92 | in_getsufx(inp, which) | |
93 | struct inpcb *inp; | |
94 | int which; | |
95 | { | |
96 | switch (which) { | |
97 | case TP_LOCAL: | |
98 | return (int) inp->inp_lport; | |
99 | ||
100 | case TP_FOREIGN: | |
101 | return (int) inp->inp_fport; | |
102 | } | |
103 | } | |
104 | ||
105 | /* | |
106 | * NAME: in_putsufx() | |
107 | * | |
108 | * CALLED FROM: tp_newsocket(); i.e., when a connection | |
109 | * is being established by an incoming CR_TPDU. | |
110 | * | |
111 | * FUNCTION, ARGUMENTS: | |
112 | * Put a transport suffix (found in name) into an inpcb structure (inp). | |
113 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
114 | * | |
115 | * RETURNS: Nada | |
116 | * | |
117 | * SIDE EFFECTS: | |
118 | * | |
119 | * NOTES: | |
120 | */ | |
121 | void | |
122 | in_putsufx(inp, name, which) | |
123 | struct inpcb *inp; | |
124 | struct sockaddr_in *name; | |
125 | int which; | |
126 | { | |
127 | switch (which) { | |
128 | case TP_LOCAL: | |
129 | inp->inp_lport = name->sin_port; | |
130 | break; | |
131 | case TP_FOREIGN: | |
132 | inp->inp_fport = name->sin_port; | |
133 | break; | |
134 | } | |
135 | } | |
136 | ||
137 | /* | |
138 | * NAME: in_recycle_tsuffix() | |
139 | * | |
140 | * CALLED FROM: tp.trans whenever we go into REFWAIT state. | |
141 | * | |
142 | * FUNCTION and ARGUMENT: | |
143 | * Called when a ref is frozen, to allow the suffix to be reused. | |
144 | * (inp) is the net level pcb. | |
145 | * | |
146 | * RETURNS: Nada | |
147 | * | |
148 | * SIDE EFFECTS: | |
149 | * | |
150 | * NOTES: This really shouldn't have to be done in a NET level pcb | |
151 | * but... for the internet world that just the way it is done in BSD... | |
152 | * The alternative is to have the port unusable until the reference | |
153 | * timer goes off. | |
154 | */ | |
155 | void | |
156 | in_recycle_tsuffix(inp) | |
157 | struct inpcb *inp; | |
158 | { | |
159 | inp->inp_fport = inp->inp_lport = 0; | |
160 | } | |
161 | ||
162 | /* | |
163 | * NAME: in_putnetaddr() | |
164 | * | |
165 | * CALLED FROM: | |
166 | * tp_newsocket(); i.e., when a connection is being established by an | |
167 | * incoming CR_TPDU. | |
168 | * | |
169 | * FUNCTION and ARGUMENTS: | |
170 | * Copy a whole net addr from a struct sockaddr (name). | |
171 | * into an inpcb (inp). | |
172 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
173 | * | |
174 | * RETURNS: Nada | |
175 | * | |
176 | * SIDE EFFECTS: | |
177 | * | |
178 | * NOTES: | |
179 | */ | |
180 | void | |
181 | in_putnetaddr(inp, name, which) | |
182 | register struct inpcb *inp; | |
183 | struct sockaddr_in *name; | |
184 | int which; | |
185 | { | |
186 | switch (which) { | |
187 | case TP_LOCAL: | |
188 | bcopy((caddr_t)&name->sin_addr, | |
189 | (caddr_t)&inp->inp_laddr, sizeof(struct in_addr)); | |
190 | /* won't work if the dst address (name) is INADDR_ANY */ | |
191 | ||
192 | break; | |
193 | case TP_FOREIGN: | |
194 | if( name != (struct sockaddr_in *)0 ) { | |
195 | bcopy((caddr_t)&name->sin_addr, | |
196 | (caddr_t)&inp->inp_faddr, sizeof(struct in_addr)); | |
197 | } | |
198 | } | |
199 | } | |
200 | ||
201 | /* | |
202 | * NAME: in_getnetaddr() | |
203 | * | |
204 | * CALLED FROM: | |
205 | * pr_usrreq() PRU_SOCKADDR, PRU_ACCEPT, PRU_PEERADDR | |
206 | * FUNCTION and ARGUMENTS: | |
207 | * Copy a whole net addr from an inpcb (inp) into | |
208 | * a struct sockaddr (name). | |
209 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN. | |
210 | * | |
211 | * RETURNS: Nada | |
212 | * | |
213 | * SIDE EFFECTS: | |
214 | * | |
215 | * NOTES: | |
216 | */ | |
217 | ||
218 | void | |
219 | in_getnetaddr( inp, name, which) | |
220 | struct inpcb *inp; | |
221 | struct sockaddr_in *name; | |
222 | int which; | |
223 | { | |
224 | switch (which) { | |
225 | case TP_LOCAL: | |
226 | bcopy( (caddr_t)&inp->inp_laddr, (caddr_t)&name->sin_addr, | |
227 | sizeof(struct in_addr)); | |
228 | /* won't work if the dst address (name) is INADDR_ANY */ | |
229 | break; | |
230 | ||
231 | case TP_FOREIGN: | |
232 | bcopy( (caddr_t)&inp->inp_faddr, (caddr_t)&name->sin_addr, | |
233 | sizeof(struct in_addr)); | |
234 | /* won't work if the dst address (name) is INADDR_ANY */ | |
235 | break; | |
236 | } | |
237 | } | |
238 | ||
239 | /* | |
240 | * NAME: tpip_mtu() | |
241 | * | |
242 | * CALLED FROM: | |
243 | * tp_input() on incoming CR, CC, and pr_usrreq() for PRU_CONNECT | |
244 | * | |
245 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
246 | * | |
247 | * Determine the proper maximum transmission unit, i.e., MTU, to use, given | |
248 | * a) the header size for the network protocol and the max transmission | |
249 | * unit on the subnet interface, determined from the information in (inp), | |
250 | * b) the max size negotiated so far (negot) | |
251 | * c) the window size used by the tp connection (found in so), | |
252 | * | |
253 | * The result is put in the integer *size in its integer form and in | |
254 | * *negot in its logarithmic form. | |
255 | * | |
256 | * The rules are: | |
257 | * a) can only negotiate down from the value found in *negot. | |
258 | * b) the MTU must be < the windowsize, | |
259 | * c) If src and dest are on the same net, | |
260 | * we will negotiate the closest size larger than MTU but really USE | |
261 | * the actual device mtu - ll hdr sizes. | |
262 | * otherwise we negotiate the closest size smaller than MTU - ll hdr sizes. | |
263 | * | |
264 | * SIDE EFFECTS: | |
265 | * changes the values addressed by the arguments (size) and (negot) | |
266 | * and | |
267 | * when the peer is not on one of our directly connected subnets, it | |
268 | * looks up a route, leaving the route in the inpcb addressed by (inp) | |
269 | * | |
270 | * NOTES: | |
271 | */ | |
272 | ||
273 | void | |
274 | tpip_mtu(so, inp, size, negot) | |
275 | struct socket *so; | |
276 | struct inpcb *inp; | |
277 | int *size; | |
278 | u_char *negot; | |
279 | { | |
280 | register struct ifnet *ifp; | |
281 | struct ifnet *tpip_route(); | |
282 | struct in_ifaddr *ia; | |
283 | register int i; | |
284 | int windowsize = so->so_rcv.sb_hiwat; | |
285 | ||
286 | IFDEBUG(D_CONN) | |
287 | printf("tpip_mtu(0x%x,0x%x,0x%x,0x%x)\n", | |
288 | so, inp, size, negot); | |
289 | printf("tpip_mtu routing to addr 0x%x\n", inp->inp_faddr); | |
290 | ENDDEBUG | |
291 | IFTRACE(D_CONN) | |
292 | tptrace(TPPTmisc, "ENTER GET MTU: size negot \n",*size, *negot, 0, 0); | |
293 | ENDTRACE | |
294 | ||
295 | *size = 1 << *negot; | |
296 | ||
297 | if( *size > windowsize ) { | |
298 | *size = windowsize; | |
299 | } | |
300 | ||
301 | ia = in_iaonnetof(in_netof(inp->inp_faddr)); | |
302 | if ( ia == (struct in_ifaddr *)0 ) { | |
303 | ifp = tpip_route(&inp->inp_faddr); | |
304 | if( ifp == (struct ifnet *)0 ) | |
305 | return ; | |
306 | } else | |
307 | ifp = ia->ia_ifp; | |
308 | ||
309 | ||
310 | /**************************************************************** | |
311 | * TODO - make this indirect off the socket structure to the | |
312 | * network layer to get headersize | |
313 | * After all, who knows what lies below the IP layer? | |
314 | * Who knows how big the NL header will be? | |
315 | ***************************************************************/ | |
316 | ||
317 | if( *size > ifp->if_mtu - sizeof(struct ip)) { | |
318 | *size = ifp->if_mtu - sizeof(struct ip); | |
319 | } | |
320 | for(i=TP_MIN_TPDUSIZE; (i<TP_MAX_TPDUSIZE && ((1<<i)<*size)) ; i++) | |
321 | ; | |
322 | i--; | |
323 | ||
324 | if (in_netof(inp->inp_laddr) != in_netof(inp->inp_faddr)) { | |
325 | i++; | |
326 | } else { | |
327 | *size = 1<<i; | |
328 | } | |
329 | *negot = i; | |
330 | ||
331 | IFDEBUG(D_CONN) | |
332 | printf("GET MTU RETURNS: ifp %s size 0x%x negot 0x%x\n", | |
333 | ifp->if_name, *size, *negot); | |
334 | ENDDEBUG | |
335 | IFTRACE(D_CONN) | |
336 | tptrace(TPPTmisc, "EXIT GET MTU: tpcb size negot \n", | |
337 | *size, *negot, 0, 0); | |
338 | ENDTRACE | |
339 | ||
340 | } | |
341 | ||
342 | /* | |
343 | * NAME: tpip_output() | |
344 | * | |
345 | * CALLED FROM: tp_emit() | |
346 | * | |
347 | * FUNCTION and ARGUMENTS: | |
348 | * Take a packet(m0) from tp and package it so that ip will accept it. | |
349 | * This means prepending space for the ip header and filling in a few | |
350 | * of the fields. | |
351 | * inp is the inpcb structure; datalen is the length of the data in the | |
352 | * mbuf string m0. | |
353 | * RETURNS: | |
354 | * whatever (E*) is returned form the net layer output routine. | |
355 | * | |
356 | * SIDE EFFECTS: | |
357 | * | |
358 | * NOTES: | |
359 | */ | |
360 | ||
361 | int | |
362 | tpip_output(inp, m0, datalen, nochksum) | |
363 | struct inpcb *inp; | |
364 | struct mbuf *m0; | |
365 | int datalen; | |
366 | int nochksum; | |
367 | { | |
368 | return tpip_output_dg( &inp->inp_laddr, &inp->inp_faddr, m0, datalen, | |
369 | &inp->inp_route, nochksum); | |
370 | } | |
371 | ||
372 | /* | |
373 | * NAME: tpip_output_dg() | |
374 | * | |
375 | * CALLED FROM: tp_error_emit() | |
376 | * | |
377 | * FUNCTION and ARGUMENTS: | |
378 | * This is a copy of tpip_output that takes the addresses | |
379 | * instead of a pcb. It's used by the tp_error_emit, when we | |
380 | * don't have an in_pcb with which to call the normal output rtn. | |
381 | * | |
382 | * RETURNS: ENOBUFS or whatever (E*) is | |
383 | * returned form the net layer output routine. | |
384 | * | |
385 | * SIDE EFFECTS: | |
386 | * | |
387 | * NOTES: | |
388 | */ | |
389 | ||
390 | int | |
391 | tpip_output_dg(laddr, faddr, m0, datalen, ro, nochksum) | |
392 | struct in_addr *laddr, *faddr; | |
393 | struct mbuf *m0; | |
394 | int datalen; | |
395 | struct route *ro; | |
396 | int nochksum; | |
397 | { | |
398 | register struct mbuf *m; | |
399 | register struct ip *ip; | |
400 | int error; | |
401 | ||
402 | IFDEBUG(D_EMIT) | |
403 | printf("tpip_output_dg datalen 0x%x m0 0x%x\n", datalen, m0); | |
404 | ENDDEBUG | |
405 | ||
406 | ||
407 | MGET(m, M_DONTWAIT, TPMT_IPHDR); | |
408 | if (m == 0) { | |
409 | error = ENOBUFS; | |
410 | goto bad; | |
411 | } | |
412 | bzero(mtod(m, caddr_t), MLEN); | |
413 | m->m_next = m0; | |
414 | m->m_off = MMAXOFF - sizeof(struct ip); | |
415 | m->m_len = sizeof(struct ip); | |
416 | m->m_act = MNULL; | |
417 | ||
418 | ip = mtod(m, struct ip *); | |
419 | ||
420 | ip->ip_p = IPPROTO_TP; | |
421 | ip->ip_len = sizeof(struct ip) + datalen; | |
422 | ip->ip_ttl = MAXTTL; | |
423 | /* don't know why you need to set ttl; | |
424 | * overlay doesn't even make this available | |
425 | */ | |
426 | ||
427 | ip->ip_src = *laddr; | |
428 | ip->ip_dst = *faddr; | |
429 | ||
430 | IncStat(ts_tpdu_sent); | |
431 | IFDEBUG(D_EMIT) | |
432 | dump_mbuf(m, "tpip_output_dg before ip_output\n"); | |
433 | ENDDEBUG | |
434 | ||
435 | error = ip_output(m, (struct mbuf *)0, ro, IP_ALLOWBROADCAST); | |
436 | ||
437 | IFDEBUG(D_EMIT) | |
438 | printf("tpip_output_dg after ip_output\n"); | |
439 | ENDDEBUG | |
440 | ||
441 | return error; | |
442 | ||
443 | bad: | |
444 | m_freem(m); | |
445 | IncStat(ts_send_drop); | |
446 | return error; | |
447 | } | |
448 | ||
449 | /* | |
450 | * NAME: tpip_input() | |
451 | * | |
452 | * CALLED FROM: | |
453 | * ip's input routine, indirectly through the protosw. | |
454 | * | |
455 | * FUNCTION and ARGUMENTS: | |
456 | * Take a packet (m) from ip, strip off the ip header and give it to tp | |
457 | * | |
458 | * RETURNS: No return value. | |
459 | * | |
460 | * SIDE EFFECTS: | |
461 | * | |
462 | * NOTES: | |
463 | */ | |
464 | ProtoHook | |
465 | tpip_input(m) | |
466 | struct mbuf *m; | |
467 | { | |
468 | typedef struct { | |
469 | struct ip tpip_i; | |
470 | struct tpdu tpip_d; | |
471 | } tpiphdr; | |
472 | register struct tpdu *hdr = mtod(m, struct tpdu *); | |
473 | struct sockaddr_in src, dst; | |
474 | register struct ip *ip; | |
475 | int s = splnet(); | |
476 | ||
477 | IncStat(ts_pkt_rcvd); | |
478 | ||
479 | /* IP layer has already pulled up the IP header */ | |
480 | ||
481 | while( m->m_len < 1 ) { | |
482 | struct mbuf *n; | |
483 | n = m_free(m); | |
484 | if( n == MNULL ) { | |
485 | splx(s); | |
486 | return 0; | |
487 | } | |
488 | } | |
489 | CHANGE_MTYPE(m, TPMT_DATA); | |
490 | ||
491 | /* | |
492 | * now pull up the whole tp header : we stripped all leading mbufs | |
493 | * w/o at least one byte, so we know we can read the tpdu_li field. | |
494 | */ | |
495 | hdr = &(mtod(m, tpiphdr *))->tpip_d; | |
496 | ||
497 | if( m->m_len < hdr->tpdu_li + 1 + sizeof(struct ip) ) { | |
498 | if((m = m_pullup(m, sizeof(struct ip) + (int)(hdr->tpdu_li)+1))==MNULL){ | |
499 | IFDEBUG(D_TPINPUT) | |
500 | printf("tp_input, pullup 2!\n"); | |
501 | ENDDEBUG | |
502 | goto discard; | |
503 | } | |
504 | } | |
505 | /* | |
506 | * cannot use tp_inputprep() here 'cause you don't | |
507 | * have quite the same situation | |
508 | */ | |
509 | ||
510 | IFDEBUG(D_TPINPUT) | |
511 | dump_mbuf(m, "after tpip_input both pullups"); | |
512 | ENDDEBUG | |
513 | /* | |
514 | * m_pullup may have returned a different mbuf | |
515 | */ | |
516 | ip = &(mtod(m, tpiphdr *))->tpip_i; | |
517 | ||
518 | /* | |
519 | * drop the ip header from the front of the mbuf | |
520 | * this is necessary for the tp checksum | |
521 | */ | |
522 | m->m_len -= sizeof(struct ip); | |
523 | m->m_off += sizeof(struct ip); | |
524 | ||
525 | src.sin_addr = *(struct in_addr *)&(ip->ip_src); | |
526 | src.sin_family = AF_INET; | |
527 | dst.sin_addr = *(struct in_addr *)&(ip->ip_dst); | |
528 | dst.sin_family = AF_INET; | |
529 | ||
530 | (void) tp_input(m, &src, &dst, 0, tpip_output_dg); | |
531 | splx(s); | |
532 | return 0; | |
533 | ||
534 | discard: | |
535 | IFDEBUG(D_TPINPUT) | |
536 | printf("tpip_input DISCARD\n"); | |
537 | ENDDEBUG | |
538 | IFTRACE(D_TPINPUT) | |
539 | tptrace(TPPTmisc, "tpip_input DISCARD m", m,0,0,0); | |
540 | ENDTRACE | |
541 | m_freem(m); | |
542 | IncStat(ts_recv_drop); | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | ||
548 | #include "../h/protosw.h" | |
549 | #include "../netinet/ip_icmp.h" | |
550 | ||
551 | /* | |
552 | * NAME: tpin_quench() | |
553 | * | |
554 | * CALLED FROM: tpip_ctlinput() | |
555 | * | |
556 | * FUNCTION and ARGUMENTS: find the tpcb pointer and pass it to tp_quench | |
557 | * | |
558 | * RETURNS: Nada | |
559 | * | |
560 | * SIDE EFFECTS: | |
561 | * | |
562 | * NOTES: | |
563 | */ | |
564 | ||
565 | void | |
566 | tpin_quench(inp) | |
567 | struct inpcb *inp; | |
568 | { | |
569 | tp_quench( inp->inp_socket->so_tpcb ); | |
570 | } | |
571 | ||
572 | /* | |
573 | * NAME: tpip_ctlinput() | |
574 | * | |
575 | * CALLED FROM: | |
576 | * The network layer through the protosw table. | |
577 | * | |
578 | * FUNCTION and ARGUMENTS: | |
579 | * When clnp gets an ICMP msg this gets called. | |
580 | * It either returns an error status to the user or | |
581 | * causes all connections on this address to be aborted | |
582 | * by calling the appropriate xx_notify() routine. | |
583 | * (cmd) is the type of ICMP error. | |
584 | * (sa) the address of the sender | |
585 | * | |
586 | * RETURNS: Nothing | |
587 | * | |
588 | * SIDE EFFECTS: | |
589 | * | |
590 | * NOTES: | |
591 | */ | |
592 | ProtoHook | |
593 | tpip_ctlinput(cmd, sin) | |
594 | int cmd; | |
595 | struct sockaddr_in *sin; | |
596 | { | |
597 | extern u_char inetctlerrmap[]; | |
598 | extern ProtoHook tpin_abort(); | |
599 | extern ProtoHook in_rtchange(); | |
600 | ||
601 | if (sin->sin_family != AF_INET && sin->sin_family != AF_IMPLINK) | |
602 | return 0; | |
603 | if (sin->sin_addr.s_addr == INADDR_ANY) | |
604 | return 0; | |
605 | if (cmd < 0 || cmd > PRC_NCMDS) | |
606 | return 0; | |
607 | switch (cmd) { | |
608 | ||
609 | case PRC_QUENCH: | |
610 | in_pcbnotify(&tp_inpcb, &sin->sin_addr, 0, tp_quench); | |
611 | break; | |
612 | ||
613 | case PRC_ROUTEDEAD: | |
614 | case PRC_HOSTUNREACH: | |
615 | case PRC_UNREACH_NET: | |
616 | case PRC_IFDOWN: | |
617 | case PRC_HOSTDEAD: | |
618 | in_pcbnotify(&tp_inpcb, &sin->sin_addr, | |
619 | (int)inetctlerrmap[cmd], in_rtchange); | |
620 | break; | |
621 | ||
622 | default: | |
623 | /* | |
624 | case PRC_MSGSIZE: | |
625 | case PRC_UNREACH_HOST: | |
626 | case PRC_UNREACH_PROTOCOL: | |
627 | case PRC_UNREACH_PORT: | |
628 | case PRC_UNREACH_NEEDFRAG: | |
629 | case PRC_UNREACH_SRCFAIL: | |
630 | case PRC_REDIRECT_NET: | |
631 | case PRC_REDIRECT_HOST: | |
632 | case PRC_REDIRECT_TOSNET: | |
633 | case PRC_REDIRECT_TOSHOST: | |
634 | case PRC_TIMXCEED_INTRANS: | |
635 | case PRC_TIMXCEED_REASS: | |
636 | case PRC_PARAMPROB: | |
637 | */ | |
638 | in_pcbnotify(&tp_inpcb, sin, (int)inetctlerrmap[cmd], tpin_abort); | |
639 | } | |
640 | return 0; | |
641 | } | |
642 | ||
643 | /* | |
644 | * NAME: tpin_abort() | |
645 | * | |
646 | * CALLED FROM: | |
647 | * xxx_notify() from tp_ctlinput() when | |
648 | * net level gets some ICMP-equiv. type event. | |
649 | * | |
650 | * FUNCTION and ARGUMENTS: | |
651 | * Cause the connection to be aborted with some sort of error | |
652 | * reason indicating that the network layer caused the abort. | |
653 | * Fakes an ER TPDU so we can go through the driver. | |
654 | * | |
655 | * RETURNS: Nothing | |
656 | * | |
657 | * SIDE EFFECTS: | |
658 | * | |
659 | * NOTES: | |
660 | */ | |
661 | ||
662 | ProtoHook | |
663 | tpin_abort(inp) | |
664 | struct inpcb *inp; | |
665 | { | |
666 | struct tp_event e; | |
667 | ||
668 | e.ev_number = ER_TPDU; | |
669 | e.ATTR(ER_TPDU).e_reason = ENETRESET; | |
670 | (void) tp_driver(inp->inp_ppcb, &e); | |
671 | return 0; | |
672 | } | |
673 | ||
674 | #ifdef ARGO_DEBUG | |
675 | dump_inaddr(addr) | |
676 | register struct sockaddr_in *addr; | |
677 | { | |
678 | printf("INET: port 0x%x; addr 0x%x\n", addr->sin_port, addr->sin_addr); | |
679 | } | |
680 | #endif ARGO_DEBUG | |
681 | ||
682 | /* | |
683 | * NAME: tpip_route() | |
684 | * | |
685 | * CALLED FROM: tpip_mtu() | |
686 | * | |
687 | * FUNCTION and ARGUMENTS: given a destination addresss, | |
688 | * find the interface that would be used to send something to this address. | |
689 | * | |
690 | * RETURNS: pointer to an ifnet structure | |
691 | * | |
692 | * SIDE EFFECTS: | |
693 | * | |
694 | * NOTES: | |
695 | */ | |
696 | struct ifnet * | |
697 | tpip_route(dst) | |
698 | struct in_addr *dst; | |
699 | { | |
700 | struct ifnet *ifp = (struct ifnet *)0; | |
701 | struct sockaddr_in *dst_in; | |
702 | struct route iproute; | |
703 | struct route *ro = (struct route *)0; | |
704 | struct in_ifaddr *ia; | |
705 | ||
706 | IFDEBUG(D_CONN) | |
707 | printf("tpip_route: dst is x%x\n", *dst); | |
708 | ENDDEBUG | |
709 | ||
710 | ro = &iproute; | |
711 | bzero((caddr_t)ro, sizeof (*ro)); | |
712 | dst_in = (struct sockaddr_in *)&ro->ro_dst; | |
713 | dst_in->sin_family = AF_INET; | |
714 | dst_in->sin_addr = *dst; | |
715 | ||
716 | ia = (struct in_ifaddr *)ifa_ifwithdstaddr(dst_in); | |
717 | if (ia == 0) | |
718 | ia = in_iaonnetof(in_netof(dst_in)); | |
719 | if (ia != 0) { | |
720 | ifp = ia->ia_ifp; | |
721 | IFDEBUG(D_CONN) | |
722 | printf("tpip_route: ifp from ia:0x%x\n", ia); | |
723 | ENDDEBUG | |
724 | } else { | |
725 | rtalloc(ro); | |
726 | if (ro->ro_rt != 0) { | |
727 | ifp = ro->ro_rt->rt_ifp; | |
728 | IFDEBUG(D_CONN) | |
729 | printf("tpip_route: ifp from route:0x%x ro_rt 0x%x\n", ro, | |
730 | ro->ro_rt); | |
731 | ENDDEBUG | |
732 | rtfree(ro->ro_rt); | |
733 | } | |
734 | } | |
735 | IFDEBUG(D_CONN) | |
736 | printf("tpip_route: returning 0x%x\n", ifp); | |
737 | if (ifp) | |
738 | printf("tpip_route: if name %s unit 0x%x, mtu 0x%x\n", | |
739 | ifp->if_name, ifp->if_unit, ifp->if_mtu); | |
740 | ENDDEBUG | |
741 | return ifp; | |
742 | } | |
743 | ||
744 | #endif INET |