| 1 | /*- |
| 2 | * Copyright (c) 1991 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | * |
| 7 | * @(#)tp_inet.c 7.10 (Berkeley) %G% |
| 8 | */ |
| 9 | |
| 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: |
| 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 |
| 57 | */ |
| 58 | |
| 59 | #ifdef INET |
| 60 | |
| 61 | #include "param.h" |
| 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" |
| 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" |
| 76 | #include "../netinet/in_var.h" |
| 77 | |
| 78 | #ifndef ISO |
| 79 | #include "iso_chksum.c" |
| 80 | #endif |
| 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 | */ |
| 99 | in_getsufx(inp, lenp, data_out, which) |
| 100 | struct inpcb *inp; |
| 101 | u_short *lenp; |
| 102 | caddr_t data_out; |
| 103 | int which; |
| 104 | { |
| 105 | *lenp = sizeof(u_short); |
| 106 | switch (which) { |
| 107 | case TP_LOCAL: |
| 108 | *(u_short *)data_out = inp->inp_lport; |
| 109 | return; |
| 110 | |
| 111 | case TP_FOREIGN: |
| 112 | *(u_short *)data_out = inp->inp_fport; |
| 113 | } |
| 114 | |
| 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 | */ |
| 133 | /*ARGSUSED*/ |
| 134 | void |
| 135 | in_putsufx(inp, sufxloc, sufxlen, which) |
| 136 | struct inpcb *inp; |
| 137 | caddr_t sufxloc; |
| 138 | int which; |
| 139 | { |
| 140 | if (which == TP_FOREIGN) { |
| 141 | bcopy(sufxloc, (caddr_t)&inp->inp_fport, sizeof(inp->inp_fport)); |
| 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 | |
| 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 | |
| 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 |
| 249 | * an mbuf (name); |
| 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) |
| 261 | register struct mbuf *name; |
| 262 | struct inpcb *inp; |
| 263 | int which; |
| 264 | { |
| 265 | register struct sockaddr_in *sin = mtod(name, struct sockaddr_in *); |
| 266 | bzero((caddr_t)sin, sizeof(*sin)); |
| 267 | switch (which) { |
| 268 | case TP_LOCAL: |
| 269 | sin->sin_addr = inp->inp_laddr; |
| 270 | sin->sin_port = inp->inp_lport; |
| 271 | break; |
| 272 | case TP_FOREIGN: |
| 273 | sin->sin_addr = inp->inp_faddr; |
| 274 | sin->sin_port = inp->inp_fport; |
| 275 | break; |
| 276 | default: |
| 277 | return; |
| 278 | } |
| 279 | name->m_len = sin->sin_len = sizeof (*sin); |
| 280 | sin->sin_family = AF_INET; |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * NAME: tpip_mtu() |
| 285 | * |
| 286 | * CALLED FROM: |
| 287 | * tp_route_to() on incoming CR, CC, and pr_usrreq() for PRU_CONNECT |
| 288 | * |
| 289 | * FUNCTION, ARGUMENTS, and RETURN VALUE: |
| 290 | * |
| 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. |
| 295 | * |
| 296 | * SIDE EFFECTS: |
| 297 | * Sets tp_routep pointer in pcb. |
| 298 | * |
| 299 | * NOTES: |
| 300 | */ |
| 301 | |
| 302 | tpip_mtu(tpcb) |
| 303 | register struct tp_pcb *tpcb; |
| 304 | { |
| 305 | struct inpcb *inp = (struct inpcb *)tpcb->tp_npcb; |
| 306 | |
| 307 | IFDEBUG(D_CONN) |
| 308 | printf("tpip_mtu(tpcb)\n", tpcb); |
| 309 | printf("tpip_mtu routing to addr 0x%x\n", inp->inp_faddr.s_addr); |
| 310 | ENDDEBUG |
| 311 | tpcb->tp_routep = &(inp->inp_route.ro_rt); |
| 312 | return (sizeof (struct ip)); |
| 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 | |
| 364 | /*ARGSUSED*/ |
| 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 | |
| 382 | MGETHDR(m, M_DONTWAIT, TPMT_IPHDR); |
| 383 | if (m == 0) { |
| 384 | error = ENOBUFS; |
| 385 | goto bad; |
| 386 | } |
| 387 | m->m_next = m0; |
| 388 | MH_ALIGN(m, sizeof(struct ip)); |
| 389 | m->m_len = sizeof(struct ip); |
| 390 | |
| 391 | ip = mtod(m, struct ip *); |
| 392 | bzero((caddr_t)ip, sizeof *ip); |
| 393 | |
| 394 | ip->ip_p = IPPROTO_TP; |
| 395 | m->m_pkthdr.len = ip->ip_len = sizeof(struct ip) + datalen; |
| 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 |
| 439 | tpip_input(m, iplen) |
| 440 | struct mbuf *m; |
| 441 | int iplen; |
| 442 | { |
| 443 | struct sockaddr_in src, dst; |
| 444 | register struct ip *ip; |
| 445 | int s = splnet(), hdrlen; |
| 446 | |
| 447 | IncStat(ts_pkt_rcvd); |
| 448 | |
| 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 | */ |
| 457 | |
| 458 | |
| 459 | if((m = m_pullup(m, iplen + 1)) == MNULL) |
| 460 | goto discard; |
| 461 | CHANGE_MTYPE(m, TPMT_DATA); |
| 462 | |
| 463 | /* |
| 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. |
| 467 | */ |
| 468 | hdrlen = iplen + 1 + mtod(m, u_char *)[iplen]; |
| 469 | |
| 470 | if( m->m_len < hdrlen ) { |
| 471 | if((m = m_pullup(m, hdrlen)) == MNULL){ |
| 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 | */ |
| 489 | ip = mtod(m, struct ip *); |
| 490 | |
| 491 | /* |
| 492 | * drop the ip header from the front of the mbuf |
| 493 | * this is necessary for the tp checksum |
| 494 | */ |
| 495 | m->m_len -= iplen; |
| 496 | m->m_data += iplen; |
| 497 | |
| 498 | src.sin_addr = *(struct in_addr *)&(ip->ip_src); |
| 499 | src.sin_family = AF_INET; |
| 500 | src.sin_len = sizeof(src); |
| 501 | dst.sin_addr = *(struct in_addr *)&(ip->ip_dst); |
| 502 | dst.sin_family = AF_INET; |
| 503 | dst.sin_len = sizeof(dst); |
| 504 | |
| 505 | (void) tp_input(m, (struct sockaddr *)&src, (struct sockaddr *)&dst, |
| 506 | 0, tpip_output_dg, 0); |
| 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); |
| 518 | splx(s); |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | |
| 523 | #include "protosw.h" |
| 524 | #include "../netinet/ip_icmp.h" |
| 525 | |
| 526 | extern void tp_quench(); |
| 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 | { |
| 545 | tp_quench((struct tp_pcb *)inp->inp_socket->so_pcb, PRC_QUENCH); |
| 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(); |
| 576 | extern struct in_addr zeroin_addr; |
| 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: |
| 587 | in_pcbnotify(&tp_inpcb, sin, 0, |
| 588 | zeroin_addr, 0, cmd, (int (*)())tp_quench); |
| 589 | break; |
| 590 | |
| 591 | case PRC_ROUTEDEAD: |
| 592 | case PRC_HOSTUNREACH: |
| 593 | case PRC_UNREACH_NET: |
| 594 | case PRC_IFDOWN: |
| 595 | case PRC_HOSTDEAD: |
| 596 | in_pcbnotify(&tp_inpcb, sin, 0, |
| 597 | zeroin_addr, 0, cmd, in_rtchange); |
| 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 | */ |
| 616 | in_pcbnotify(&tp_inpcb, sin, 0, zeroin_addr, 0, |
| 617 | cmd, tpin_abort); |
| 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; |
| 649 | (void) tp_driver((struct tp_pcb *)inp->inp_ppcb, &e); |
| 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 |
| 660 | #endif INET |