Commit | Line | Data |
---|---|---|
7bcd1bb8 | 1 | /*- |
ad787160 C |
2 | * Copyright (c) 1991, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
7bcd1bb8 | 4 | * |
ad787160 C |
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. | |
7bcd1bb8 | 20 | * |
ad787160 C |
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_inet.c 8.1 (Berkeley) 6/10/93 | |
7bcd1bb8 KB |
34 | */ |
35 | ||
2f41dd0f KS |
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 | |
64 | * $Header: tp_inet.c,v 5.3 88/11/18 17:27:29 nhall Exp $ | |
65 | * $Source: /usr/argo/sys/netiso/RCS/tp_inet.c,v $ | |
66 | * | |
67 | * Here is where you find the inet-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: | |
7bcd1bb8 KB |
73 | * in_getsufx: gets transport suffix out of an inpcb structure. |
74 | * in_putsufx: put transport suffix into an inpcb structure. | |
75 | * in_putnetaddr: put a whole net addr into an inpcb. | |
76 | * in_getnetaddr: get a whole net addr from an inpcb. | |
77 | * in_cmpnetaddr: compare a whole net addr from an isopcb. | |
78 | * in_recycle_suffix: clear suffix for reuse in inpcb | |
79 | * tpip_mtu: figure out what size tpdu to use | |
80 | * tpip_input: take a pkt from ip, strip off its ip header, give to tp | |
81 | * tpip_output_dg: package a pkt for ip given 2 addresses & some data | |
82 | * tpip_output: package a pkt for ip given an inpcb & some data | |
2f41dd0f KS |
83 | */ |
84 | ||
2f41dd0f KS |
85 | #ifdef INET |
86 | ||
5548a02f KB |
87 | #include <sys/param.h> |
88 | #include <sys/socket.h> | |
89 | #include <sys/socketvar.h> | |
90 | #include <sys/mbuf.h> | |
91 | #include <sys/errno.h> | |
92 | #include <sys/time.h> | |
93 | ||
94 | #include <net/if.h> | |
95 | ||
96 | #include <netiso/tp_param.h> | |
97 | #include <netiso/argo_debug.h> | |
98 | #include <netiso/tp_stat.h> | |
99 | #include <netiso/tp_ip.h> | |
100 | #include <netiso/tp_pcb.h> | |
101 | #include <netiso/tp_trace.h> | |
102 | #include <netiso/tp_stat.h> | |
103 | #include <netiso/tp_tpdu.h> | |
104 | #include <netinet/in_var.h> | |
2f41dd0f | 105 | |
a50e2bc0 | 106 | #ifndef ISO |
5548a02f | 107 | #include <netiso/iso_chksum.c> |
a50e2bc0 | 108 | #endif |
2f41dd0f KS |
109 | |
110 | /* | |
111 | * NAME: in_getsufx() | |
112 | ||
113 | * CALLED FROM: pr_usrreq() on PRU_BIND, | |
114 | * PRU_CONNECT, PRU_ACCEPT, and PRU_PEERADDR | |
115 | * | |
116 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
117 | * Get a transport suffix from an inpcb structure (inp). | |
118 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
119 | * | |
120 | * RETURNS: internet port / transport suffix | |
121 | * (CAST TO AN INT) | |
122 | * | |
123 | * SIDE EFFECTS: | |
124 | * | |
125 | * NOTES: | |
126 | */ | |
a50e2bc0 | 127 | in_getsufx(inp, lenp, data_out, which) |
2f41dd0f | 128 | struct inpcb *inp; |
a50e2bc0 KS |
129 | u_short *lenp; |
130 | caddr_t data_out; | |
2f41dd0f KS |
131 | int which; |
132 | { | |
a50e2bc0 | 133 | *lenp = sizeof(u_short); |
2f41dd0f KS |
134 | switch (which) { |
135 | case TP_LOCAL: | |
a50e2bc0 KS |
136 | *(u_short *)data_out = inp->inp_lport; |
137 | return; | |
2f41dd0f KS |
138 | |
139 | case TP_FOREIGN: | |
a50e2bc0 | 140 | *(u_short *)data_out = inp->inp_fport; |
2f41dd0f | 141 | } |
a50e2bc0 | 142 | |
2f41dd0f KS |
143 | } |
144 | ||
145 | /* | |
146 | * NAME: in_putsufx() | |
147 | * | |
148 | * CALLED FROM: tp_newsocket(); i.e., when a connection | |
149 | * is being established by an incoming CR_TPDU. | |
150 | * | |
151 | * FUNCTION, ARGUMENTS: | |
152 | * Put a transport suffix (found in name) into an inpcb structure (inp). | |
153 | * The argument (which) takes the value TP_LOCAL or TP_FOREIGN. | |
154 | * | |
155 | * RETURNS: Nada | |
156 | * | |
157 | * SIDE EFFECTS: | |
158 | * | |
159 | * NOTES: | |
160 | */ | |
a50e2bc0 | 161 | /*ARGSUSED*/ |
2f41dd0f | 162 | void |
a50e2bc0 | 163 | in_putsufx(inp, sufxloc, sufxlen, which) |
2f41dd0f | 164 | struct inpcb *inp; |
a50e2bc0 | 165 | caddr_t sufxloc; |
2f41dd0f KS |
166 | int which; |
167 | { | |
a50e2bc0 KS |
168 | if (which == TP_FOREIGN) { |
169 | bcopy(sufxloc, (caddr_t)&inp->inp_fport, sizeof(inp->inp_fport)); | |
2f41dd0f KS |
170 | } |
171 | } | |
172 | ||
173 | /* | |
174 | * NAME: in_recycle_tsuffix() | |
175 | * | |
176 | * CALLED FROM: tp.trans whenever we go into REFWAIT state. | |
177 | * | |
178 | * FUNCTION and ARGUMENT: | |
179 | * Called when a ref is frozen, to allow the suffix to be reused. | |
180 | * (inp) is the net level pcb. | |
181 | * | |
182 | * RETURNS: Nada | |
183 | * | |
184 | * SIDE EFFECTS: | |
185 | * | |
186 | * NOTES: This really shouldn't have to be done in a NET level pcb | |
187 | * but... for the internet world that just the way it is done in BSD... | |
188 | * The alternative is to have the port unusable until the reference | |
189 | * timer goes off. | |
190 | */ | |
191 | void | |
192 | in_recycle_tsuffix(inp) | |
193 | struct inpcb *inp; | |
194 | { | |
195 | inp->inp_fport = inp->inp_lport = 0; | |
196 | } | |
197 | ||
198 | /* | |
199 | * NAME: in_putnetaddr() | |
200 | * | |
201 | * CALLED FROM: | |
202 | * tp_newsocket(); i.e., when a connection is being established by an | |
203 | * incoming CR_TPDU. | |
204 | * | |
205 | * FUNCTION and ARGUMENTS: | |
206 | * Copy a whole net addr from a struct sockaddr (name). | |
207 | * into an inpcb (inp). | |
208 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
209 | * | |
210 | * RETURNS: Nada | |
211 | * | |
212 | * SIDE EFFECTS: | |
213 | * | |
214 | * NOTES: | |
215 | */ | |
216 | void | |
217 | in_putnetaddr(inp, name, which) | |
218 | register struct inpcb *inp; | |
219 | struct sockaddr_in *name; | |
220 | int which; | |
221 | { | |
222 | switch (which) { | |
223 | case TP_LOCAL: | |
224 | bcopy((caddr_t)&name->sin_addr, | |
225 | (caddr_t)&inp->inp_laddr, sizeof(struct in_addr)); | |
226 | /* won't work if the dst address (name) is INADDR_ANY */ | |
227 | ||
228 | break; | |
229 | case TP_FOREIGN: | |
230 | if( name != (struct sockaddr_in *)0 ) { | |
231 | bcopy((caddr_t)&name->sin_addr, | |
232 | (caddr_t)&inp->inp_faddr, sizeof(struct in_addr)); | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
63f88aec KS |
237 | /* |
238 | * NAME: in_putnetaddr() | |
239 | * | |
240 | * CALLED FROM: | |
241 | * tp_input() when a connection is being established by an | |
242 | * incoming CR_TPDU, and considered for interception. | |
243 | * | |
244 | * FUNCTION and ARGUMENTS: | |
245 | * Compare a whole net addr from a struct sockaddr (name), | |
246 | * with that implicitly stored in an inpcb (inp). | |
247 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN | |
248 | * | |
249 | * RETURNS: Nada | |
250 | * | |
251 | * SIDE EFFECTS: | |
252 | * | |
253 | * NOTES: | |
254 | */ | |
255 | in_cmpnetaddr(inp, name, which) | |
256 | register struct inpcb *inp; | |
257 | register struct sockaddr_in *name; | |
258 | int which; | |
259 | { | |
260 | if (which == TP_LOCAL) { | |
261 | if (name->sin_port && name->sin_port != inp->inp_lport) | |
262 | return 0; | |
263 | return (name->sin_addr.s_addr == inp->inp_laddr.s_addr); | |
264 | } | |
265 | if (name->sin_port && name->sin_port != inp->inp_fport) | |
266 | return 0; | |
267 | return (name->sin_addr.s_addr == inp->inp_faddr.s_addr); | |
268 | } | |
269 | ||
2f41dd0f KS |
270 | /* |
271 | * NAME: in_getnetaddr() | |
272 | * | |
273 | * CALLED FROM: | |
274 | * pr_usrreq() PRU_SOCKADDR, PRU_ACCEPT, PRU_PEERADDR | |
275 | * FUNCTION and ARGUMENTS: | |
276 | * Copy a whole net addr from an inpcb (inp) into | |
a50e2bc0 | 277 | * an mbuf (name); |
2f41dd0f KS |
278 | * The argument (which) takes values TP_LOCAL or TP_FOREIGN. |
279 | * | |
280 | * RETURNS: Nada | |
281 | * | |
282 | * SIDE EFFECTS: | |
283 | * | |
284 | * NOTES: | |
285 | */ | |
286 | ||
287 | void | |
288 | in_getnetaddr( inp, name, which) | |
a50e2bc0 | 289 | register struct mbuf *name; |
2f41dd0f | 290 | struct inpcb *inp; |
2f41dd0f KS |
291 | int which; |
292 | { | |
a50e2bc0 KS |
293 | register struct sockaddr_in *sin = mtod(name, struct sockaddr_in *); |
294 | bzero((caddr_t)sin, sizeof(*sin)); | |
2f41dd0f KS |
295 | switch (which) { |
296 | case TP_LOCAL: | |
a50e2bc0 KS |
297 | sin->sin_addr = inp->inp_laddr; |
298 | sin->sin_port = inp->inp_lport; | |
2f41dd0f | 299 | break; |
2f41dd0f | 300 | case TP_FOREIGN: |
a50e2bc0 KS |
301 | sin->sin_addr = inp->inp_faddr; |
302 | sin->sin_port = inp->inp_fport; | |
2f41dd0f | 303 | break; |
a50e2bc0 KS |
304 | default: |
305 | return; | |
2f41dd0f | 306 | } |
a50e2bc0 KS |
307 | name->m_len = sin->sin_len = sizeof (*sin); |
308 | sin->sin_family = AF_INET; | |
2f41dd0f KS |
309 | } |
310 | ||
311 | /* | |
312 | * NAME: tpip_mtu() | |
313 | * | |
314 | * CALLED FROM: | |
f501b4b9 | 315 | * tp_route_to() on incoming CR, CC, and pr_usrreq() for PRU_CONNECT |
2f41dd0f KS |
316 | * |
317 | * FUNCTION, ARGUMENTS, and RETURN VALUE: | |
318 | * | |
f501b4b9 KS |
319 | * Perform subnetwork dependent part of determining MTU information. |
320 | * It appears that setting a double pointer to the rtentry associated with | |
321 | * the destination, and returning the header size for the network protocol | |
322 | * suffices. | |
2f41dd0f KS |
323 | * |
324 | * SIDE EFFECTS: | |
f501b4b9 | 325 | * Sets tp_routep pointer in pcb. |
2f41dd0f KS |
326 | * |
327 | * NOTES: | |
328 | */ | |
329 | ||
f501b4b9 KS |
330 | tpip_mtu(tpcb) |
331 | register struct tp_pcb *tpcb; | |
2f41dd0f | 332 | { |
f501b4b9 | 333 | struct inpcb *inp = (struct inpcb *)tpcb->tp_npcb; |
2f41dd0f KS |
334 | |
335 | IFDEBUG(D_CONN) | |
f501b4b9 KS |
336 | printf("tpip_mtu(tpcb)\n", tpcb); |
337 | printf("tpip_mtu routing to addr 0x%x\n", inp->inp_faddr.s_addr); | |
2f41dd0f | 338 | ENDDEBUG |
f501b4b9 KS |
339 | tpcb->tp_routep = &(inp->inp_route.ro_rt); |
340 | return (sizeof (struct ip)); | |
2f41dd0f KS |
341 | |
342 | } | |
343 | ||
344 | /* | |
345 | * NAME: tpip_output() | |
346 | * | |
347 | * CALLED FROM: tp_emit() | |
348 | * | |
349 | * FUNCTION and ARGUMENTS: | |
350 | * Take a packet(m0) from tp and package it so that ip will accept it. | |
351 | * This means prepending space for the ip header and filling in a few | |
352 | * of the fields. | |
353 | * inp is the inpcb structure; datalen is the length of the data in the | |
354 | * mbuf string m0. | |
355 | * RETURNS: | |
356 | * whatever (E*) is returned form the net layer output routine. | |
357 | * | |
358 | * SIDE EFFECTS: | |
359 | * | |
360 | * NOTES: | |
361 | */ | |
362 | ||
363 | int | |
364 | tpip_output(inp, m0, datalen, nochksum) | |
365 | struct inpcb *inp; | |
366 | struct mbuf *m0; | |
367 | int datalen; | |
368 | int nochksum; | |
369 | { | |
370 | return tpip_output_dg( &inp->inp_laddr, &inp->inp_faddr, m0, datalen, | |
371 | &inp->inp_route, nochksum); | |
372 | } | |
373 | ||
374 | /* | |
375 | * NAME: tpip_output_dg() | |
376 | * | |
377 | * CALLED FROM: tp_error_emit() | |
378 | * | |
379 | * FUNCTION and ARGUMENTS: | |
380 | * This is a copy of tpip_output that takes the addresses | |
381 | * instead of a pcb. It's used by the tp_error_emit, when we | |
382 | * don't have an in_pcb with which to call the normal output rtn. | |
383 | * | |
384 | * RETURNS: ENOBUFS or whatever (E*) is | |
385 | * returned form the net layer output routine. | |
386 | * | |
387 | * SIDE EFFECTS: | |
388 | * | |
389 | * NOTES: | |
390 | */ | |
391 | ||
a50e2bc0 | 392 | /*ARGSUSED*/ |
2f41dd0f KS |
393 | int |
394 | tpip_output_dg(laddr, faddr, m0, datalen, ro, nochksum) | |
395 | struct in_addr *laddr, *faddr; | |
396 | struct mbuf *m0; | |
397 | int datalen; | |
398 | struct route *ro; | |
399 | int nochksum; | |
400 | { | |
401 | register struct mbuf *m; | |
402 | register struct ip *ip; | |
403 | int error; | |
404 | ||
405 | IFDEBUG(D_EMIT) | |
406 | printf("tpip_output_dg datalen 0x%x m0 0x%x\n", datalen, m0); | |
407 | ENDDEBUG | |
408 | ||
409 | ||
a50e2bc0 | 410 | MGETHDR(m, M_DONTWAIT, TPMT_IPHDR); |
2f41dd0f KS |
411 | if (m == 0) { |
412 | error = ENOBUFS; | |
413 | goto bad; | |
414 | } | |
2f41dd0f | 415 | m->m_next = m0; |
a50e2bc0 | 416 | MH_ALIGN(m, sizeof(struct ip)); |
2f41dd0f | 417 | m->m_len = sizeof(struct ip); |
2f41dd0f KS |
418 | |
419 | ip = mtod(m, struct ip *); | |
a50e2bc0 | 420 | bzero((caddr_t)ip, sizeof *ip); |
2f41dd0f KS |
421 | |
422 | ip->ip_p = IPPROTO_TP; | |
a50e2bc0 | 423 | m->m_pkthdr.len = ip->ip_len = sizeof(struct ip) + datalen; |
2f41dd0f KS |
424 | ip->ip_ttl = MAXTTL; |
425 | /* don't know why you need to set ttl; | |
426 | * overlay doesn't even make this available | |
427 | */ | |
428 | ||
429 | ip->ip_src = *laddr; | |
430 | ip->ip_dst = *faddr; | |
431 | ||
432 | IncStat(ts_tpdu_sent); | |
433 | IFDEBUG(D_EMIT) | |
434 | dump_mbuf(m, "tpip_output_dg before ip_output\n"); | |
435 | ENDDEBUG | |
436 | ||
d2fb64b2 | 437 | error = ip_output(m, (struct mbuf *)0, ro, IP_ALLOWBROADCAST, NULL); |
2f41dd0f KS |
438 | |
439 | IFDEBUG(D_EMIT) | |
440 | printf("tpip_output_dg after ip_output\n"); | |
441 | ENDDEBUG | |
442 | ||
443 | return error; | |
444 | ||
445 | bad: | |
446 | m_freem(m); | |
447 | IncStat(ts_send_drop); | |
448 | return error; | |
449 | } | |
450 | ||
451 | /* | |
452 | * NAME: tpip_input() | |
453 | * | |
454 | * CALLED FROM: | |
455 | * ip's input routine, indirectly through the protosw. | |
456 | * | |
457 | * FUNCTION and ARGUMENTS: | |
458 | * Take a packet (m) from ip, strip off the ip header and give it to tp | |
459 | * | |
460 | * RETURNS: No return value. | |
461 | * | |
462 | * SIDE EFFECTS: | |
463 | * | |
464 | * NOTES: | |
465 | */ | |
466 | ProtoHook | |
a50e2bc0 | 467 | tpip_input(m, iplen) |
2f41dd0f | 468 | struct mbuf *m; |
a50e2bc0 | 469 | int iplen; |
2f41dd0f | 470 | { |
2f41dd0f KS |
471 | struct sockaddr_in src, dst; |
472 | register struct ip *ip; | |
a50e2bc0 | 473 | int s = splnet(), hdrlen; |
2f41dd0f KS |
474 | |
475 | IncStat(ts_pkt_rcvd); | |
476 | ||
a50e2bc0 KS |
477 | /* |
478 | * IP layer has already pulled up the IP header, | |
479 | * but the first byte after the IP header may not be there, | |
480 | * e.g. if you came in via loopback, so you have to do an | |
481 | * m_pullup to before you can even look to see how much you | |
482 | * really need. The good news is that m_pullup will round | |
483 | * up to almost the next mbuf's worth. | |
484 | */ | |
2f41dd0f | 485 | |
a50e2bc0 KS |
486 | |
487 | if((m = m_pullup(m, iplen + 1)) == MNULL) | |
488 | goto discard; | |
2f41dd0f KS |
489 | CHANGE_MTYPE(m, TPMT_DATA); |
490 | ||
491 | /* | |
a50e2bc0 KS |
492 | * Now pull up the whole tp header: |
493 | * Unfortunately, there may be IP options to skip past so we | |
494 | * just fetch it as an unsigned char. | |
2f41dd0f | 495 | */ |
a50e2bc0 | 496 | hdrlen = iplen + 1 + mtod(m, u_char *)[iplen]; |
2f41dd0f | 497 | |
a50e2bc0 KS |
498 | if( m->m_len < hdrlen ) { |
499 | if((m = m_pullup(m, hdrlen)) == MNULL){ | |
2f41dd0f KS |
500 | IFDEBUG(D_TPINPUT) |
501 | printf("tp_input, pullup 2!\n"); | |
502 | ENDDEBUG | |
503 | goto discard; | |
504 | } | |
505 | } | |
506 | /* | |
507 | * cannot use tp_inputprep() here 'cause you don't | |
508 | * have quite the same situation | |
509 | */ | |
510 | ||
511 | IFDEBUG(D_TPINPUT) | |
512 | dump_mbuf(m, "after tpip_input both pullups"); | |
513 | ENDDEBUG | |
514 | /* | |
515 | * m_pullup may have returned a different mbuf | |
516 | */ | |
a50e2bc0 | 517 | ip = mtod(m, struct ip *); |
2f41dd0f KS |
518 | |
519 | /* | |
520 | * drop the ip header from the front of the mbuf | |
521 | * this is necessary for the tp checksum | |
522 | */ | |
a50e2bc0 KS |
523 | m->m_len -= iplen; |
524 | m->m_data += iplen; | |
2f41dd0f KS |
525 | |
526 | src.sin_addr = *(struct in_addr *)&(ip->ip_src); | |
527 | src.sin_family = AF_INET; | |
a50e2bc0 | 528 | src.sin_len = sizeof(src); |
2f41dd0f KS |
529 | dst.sin_addr = *(struct in_addr *)&(ip->ip_dst); |
530 | dst.sin_family = AF_INET; | |
a50e2bc0 | 531 | dst.sin_len = sizeof(dst); |
2f41dd0f | 532 | |
a50e2bc0 | 533 | (void) tp_input(m, (struct sockaddr *)&src, (struct sockaddr *)&dst, |
41fac7bb | 534 | 0, tpip_output_dg, 0); |
2f41dd0f KS |
535 | return 0; |
536 | ||
537 | discard: | |
538 | IFDEBUG(D_TPINPUT) | |
539 | printf("tpip_input DISCARD\n"); | |
540 | ENDDEBUG | |
541 | IFTRACE(D_TPINPUT) | |
542 | tptrace(TPPTmisc, "tpip_input DISCARD m", m,0,0,0); | |
543 | ENDTRACE | |
544 | m_freem(m); | |
545 | IncStat(ts_recv_drop); | |
a50e2bc0 | 546 | splx(s); |
2f41dd0f KS |
547 | return 0; |
548 | } | |
549 | ||
550 | ||
5548a02f KB |
551 | #include <sys/protosw.h> |
552 | #include <netinet/ip_icmp.h> | |
2f41dd0f | 553 | |
a50e2bc0 | 554 | extern void tp_quench(); |
2f41dd0f KS |
555 | /* |
556 | * NAME: tpin_quench() | |
557 | * | |
558 | * CALLED FROM: tpip_ctlinput() | |
559 | * | |
560 | * FUNCTION and ARGUMENTS: find the tpcb pointer and pass it to tp_quench | |
561 | * | |
562 | * RETURNS: Nada | |
563 | * | |
564 | * SIDE EFFECTS: | |
565 | * | |
566 | * NOTES: | |
567 | */ | |
568 | ||
569 | void | |
570 | tpin_quench(inp) | |
571 | struct inpcb *inp; | |
572 | { | |
f15f73d2 | 573 | tp_quench((struct tp_pcb *)inp->inp_socket->so_pcb, PRC_QUENCH); |
2f41dd0f KS |
574 | } |
575 | ||
576 | /* | |
577 | * NAME: tpip_ctlinput() | |
578 | * | |
579 | * CALLED FROM: | |
580 | * The network layer through the protosw table. | |
581 | * | |
582 | * FUNCTION and ARGUMENTS: | |
583 | * When clnp gets an ICMP msg this gets called. | |
584 | * It either returns an error status to the user or | |
585 | * causes all connections on this address to be aborted | |
586 | * by calling the appropriate xx_notify() routine. | |
587 | * (cmd) is the type of ICMP error. | |
588 | * (sa) the address of the sender | |
589 | * | |
590 | * RETURNS: Nothing | |
591 | * | |
592 | * SIDE EFFECTS: | |
593 | * | |
594 | * NOTES: | |
595 | */ | |
596 | ProtoHook | |
597 | tpip_ctlinput(cmd, sin) | |
598 | int cmd; | |
599 | struct sockaddr_in *sin; | |
600 | { | |
601 | extern u_char inetctlerrmap[]; | |
87387e5e | 602 | extern struct in_addr zeroin_addr; |
d2fb64b2 KS |
603 | void tp_quench __P((struct inpcb *,int)); |
604 | void tpin_abort __P((struct inpcb *,int)); | |
2f41dd0f KS |
605 | |
606 | if (sin->sin_family != AF_INET && sin->sin_family != AF_IMPLINK) | |
607 | return 0; | |
608 | if (sin->sin_addr.s_addr == INADDR_ANY) | |
609 | return 0; | |
610 | if (cmd < 0 || cmd > PRC_NCMDS) | |
611 | return 0; | |
612 | switch (cmd) { | |
613 | ||
614 | case PRC_QUENCH: | |
d2fb64b2 KS |
615 | in_pcbnotify(&tp_inpcb, (struct sockaddr *)sin, 0, |
616 | zeroin_addr, 0, cmd, tp_quench); | |
2f41dd0f KS |
617 | break; |
618 | ||
619 | case PRC_ROUTEDEAD: | |
620 | case PRC_HOSTUNREACH: | |
621 | case PRC_UNREACH_NET: | |
622 | case PRC_IFDOWN: | |
623 | case PRC_HOSTDEAD: | |
d2fb64b2 | 624 | in_pcbnotify(&tp_inpcb, (struct sockaddr *)sin, 0, |
87387e5e | 625 | zeroin_addr, 0, cmd, in_rtchange); |
2f41dd0f KS |
626 | break; |
627 | ||
628 | default: | |
629 | /* | |
630 | case PRC_MSGSIZE: | |
631 | case PRC_UNREACH_HOST: | |
632 | case PRC_UNREACH_PROTOCOL: | |
633 | case PRC_UNREACH_PORT: | |
634 | case PRC_UNREACH_NEEDFRAG: | |
635 | case PRC_UNREACH_SRCFAIL: | |
636 | case PRC_REDIRECT_NET: | |
637 | case PRC_REDIRECT_HOST: | |
638 | case PRC_REDIRECT_TOSNET: | |
639 | case PRC_REDIRECT_TOSHOST: | |
640 | case PRC_TIMXCEED_INTRANS: | |
641 | case PRC_TIMXCEED_REASS: | |
642 | case PRC_PARAMPROB: | |
643 | */ | |
d2fb64b2 KS |
644 | in_pcbnotify(&tp_inpcb, (struct sockaddr *)sin, 0, |
645 | zeroin_addr, 0, cmd, tpin_abort); | |
2f41dd0f KS |
646 | } |
647 | return 0; | |
648 | } | |
649 | ||
650 | /* | |
651 | * NAME: tpin_abort() | |
652 | * | |
653 | * CALLED FROM: | |
654 | * xxx_notify() from tp_ctlinput() when | |
655 | * net level gets some ICMP-equiv. type event. | |
656 | * | |
657 | * FUNCTION and ARGUMENTS: | |
658 | * Cause the connection to be aborted with some sort of error | |
659 | * reason indicating that the network layer caused the abort. | |
660 | * Fakes an ER TPDU so we can go through the driver. | |
661 | * | |
662 | * RETURNS: Nothing | |
663 | * | |
664 | * SIDE EFFECTS: | |
665 | * | |
666 | * NOTES: | |
667 | */ | |
668 | ||
669 | ProtoHook | |
670 | tpin_abort(inp) | |
671 | struct inpcb *inp; | |
672 | { | |
673 | struct tp_event e; | |
674 | ||
675 | e.ev_number = ER_TPDU; | |
676 | e.ATTR(ER_TPDU).e_reason = ENETRESET; | |
a50e2bc0 | 677 | (void) tp_driver((struct tp_pcb *)inp->inp_ppcb, &e); |
2f41dd0f KS |
678 | return 0; |
679 | } | |
680 | ||
681 | #ifdef ARGO_DEBUG | |
682 | dump_inaddr(addr) | |
683 | register struct sockaddr_in *addr; | |
684 | { | |
685 | printf("INET: port 0x%x; addr 0x%x\n", addr->sin_port, addr->sin_addr); | |
686 | } | |
4d8170e5 KB |
687 | #endif /* ARGO_DEBUG */ |
688 | #endif /* INET */ |