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 * $Header: iso.c,v 4.11 88/09/19 14:58:35 root Exp $ 29 * $Source: /usr/argo/sys/netiso/RCS/iso.c,v $ 30 * @(#)iso.c 7.8 (Berkeley) 04/12/90 31 * 32 * iso.c: miscellaneous routines to support the iso address family 33 */ 34 35 #ifndef lint 36 static char *rcsid = "$Header: iso.c,v 4.11 88/09/19 14:58:35 root Exp $"; 37 #endif 38 39 40 #include "types.h" 41 #include "param.h" 42 #include "ioctl.h" 43 #include "mbuf.h" 44 #include "domain.h" 45 #include "protosw.h" 46 #include "socket.h" 47 #include "socketvar.h" 48 #include "user.h" 49 #include "errno.h" 50 51 #include "../net/if.h" 52 #include "../net/route.h" 53 #include "../net/af.h" 54 55 #include "iso.h" 56 #include "iso_var.h" 57 #include "iso_snpac.h" 58 #include "iso_pcb.h" 59 #include "clnp.h" 60 #include "argo_debug.h" 61 62 #ifdef ISO 63 #include "argoxtwentyfive.h" 64 65 int iso_interfaces = 0; /* number of external interfaces */ 66 extern struct ifnet loif; /* loopback interface */ 67 68 69 /* 70 * FUNCTION: iso_init 71 * 72 * PURPOSE: initialize the iso address family 73 * 74 * RETURNS: nothing 75 * 76 * SIDE EFFECTS: 1) zeros the maptab table. 77 * 2) initializes the routing table. 78 * 79 * NOTES: 80 */ 81 struct radix_node_head *iso_rnhead; 82 iso_init() 83 { 84 extern struct spna_cache iso_snpac[]; 85 extern u_int iso_snpac_size; 86 static iso_init_done; 87 88 if (iso_init_done == 0) { 89 iso_init_done++; 90 bzero((caddr_t)iso_snpac, iso_snpac_size * sizeof(struct snpa_cache)); 91 rn_inithead(&iso_rnhead, 40, AF_ISO); 92 } 93 } 94 95 /* 96 * FUNCTION: iso_addrmatch1 97 * 98 * PURPOSE: decide if the two iso_addrs passed are equal 99 * 100 * RETURNS: true if the addrs match, false if they do not 101 * 102 * SIDE EFFECTS: 103 * 104 * NOTES: 105 */ 106 iso_addrmatch1(isoaa, isoab) 107 register struct iso_addr *isoaa, *isoab; /* addresses to check */ 108 { 109 u_int compare_len; 110 111 IFDEBUG(D_ROUTE) 112 printf("iso_addrmatch1: comparing lengths: %d to %d\n", isoaa->isoa_len, 113 isoab->isoa_len); 114 printf("a:\n"); 115 dump_buf(isoaa->isoa_genaddr, isoaa->isoa_len); 116 printf("b:\n"); 117 dump_buf(isoab->isoa_genaddr, isoab->isoa_len); 118 ENDDEBUG 119 120 if ((compare_len = isoaa->isoa_len) != isoab->isoa_len) { 121 IFDEBUG(D_ROUTE) 122 printf("iso_addrmatch1: returning false because of lengths\n"); 123 ENDDEBUG 124 return 0; 125 } 126 127 #ifdef notdef 128 /* TODO : generalize this to all afis with masks */ 129 if( isoaa->isoa_afi == AFI_37 ) { 130 /* must not compare 2 least significant digits, or for 131 * that matter, the DSP 132 */ 133 compare_len = ADDR37_IDI_LEN - 1; 134 } 135 #endif 136 137 IFDEBUG(D_ROUTE) 138 int i; 139 char *a, *b; 140 141 a = isoaa->isoa_genaddr; 142 b = isoab->isoa_genaddr; 143 144 for (i=0; i<compare_len; i++) { 145 printf("<%x=%x>", a[i]&0xff, b[i]&0xff); 146 if (a[i] != b[i]) { 147 printf("\naddrs are not equal at byte %d\n", i); 148 return(0); 149 } 150 } 151 printf("\n"); 152 printf("addrs are equal\n"); 153 return (1); 154 ENDDEBUG 155 return (!bcmp(isoaa->isoa_genaddr, isoab->isoa_genaddr, compare_len)); 156 } 157 158 /* 159 * FUNCTION: iso_addrmatch 160 * 161 * PURPOSE: decide if the two sockadrr_isos passed are equal 162 * 163 * RETURNS: true if the addrs match, false if they do not 164 * 165 * SIDE EFFECTS: 166 * 167 * NOTES: 168 */ 169 iso_addrmatch(sisoa, sisob) 170 struct sockaddr_iso *sisoa, *sisob; /* addresses to check */ 171 { 172 return(iso_addrmatch1(&sisoa->siso_addr, &sisob->siso_addr)); 173 } 174 #ifdef notdef 175 /* 176 * FUNCTION: iso_netmatch 177 * 178 * PURPOSE: similar to iso_addrmatch but takes sockaddr_iso 179 * as argument. 180 * 181 * RETURNS: true if same net, false if not 182 * 183 * SIDE EFFECTS: 184 * 185 * NOTES: 186 */ 187 iso_netmatch(sisoa, sisob) 188 struct sockaddr_iso *sisoa, *sisob; 189 { 190 u_char bufa[sizeof(struct sockaddr_iso)]; 191 u_char bufb[sizeof(struct sockaddr_iso)]; 192 register int lena, lenb; 193 194 lena = iso_netof(&sisoa->siso_addr, bufa); 195 lenb = iso_netof(&sisob->siso_addr, bufb); 196 197 IFDEBUG(D_ROUTE) 198 printf("iso_netmatch: comparing lengths: %d to %d\n", lena, lenb); 199 printf("a:\n"); 200 dump_buf(bufa, lena); 201 printf("b:\n"); 202 dump_buf(bufb, lenb); 203 ENDDEBUG 204 205 return ((lena == lenb) && (!bcmp(bufa, bufb, lena))); 206 } 207 #endif notdef 208 209 /* 210 * FUNCTION: iso_hashchar 211 * 212 * PURPOSE: Hash all character in the buffer specified into 213 * a long. Return the long. 214 * 215 * RETURNS: The hash value. 216 * 217 * SIDE EFFECTS: 218 * 219 * NOTES: The hash is achieved by exclusive ORing 4 byte 220 * quantities. 221 */ 222 u_long 223 iso_hashchar(buf, len) 224 register caddr_t buf; /* buffer to pack from */ 225 register int len; /* length of buffer */ 226 { 227 register u_long h = 0; 228 register int i; 229 230 for (i=0; i<len; i+=4) { 231 register u_long l = 0; 232 233 if ((len - i) < 4) { 234 /* buffer not multiple of 4 */ 235 switch (len - i) { 236 case 3: 237 l |= buf[i+2] << 8; 238 case 2: 239 l |= buf[i+1] << 16; 240 case 1: 241 l |= buf[i] << 24; 242 break; 243 default: 244 printf("iso_hashchar: unexpected value x%x\n", len - i); 245 break; 246 } 247 } else { 248 l |= buf[i] << 24; 249 l |= buf[i+1] << 16; 250 l |= buf[i+2] << 8; 251 l |= buf[i+3]; 252 } 253 254 h ^= l; 255 } 256 257 h ^= (u_long) (len % 4); 258 259 return(h); 260 } 261 #ifdef notdef 262 /* 263 * FUNCTION: iso_hash 264 * 265 * PURPOSE: Fill in fields of afhash structure based upon addr passed. 266 * 267 * RETURNS: none 268 * 269 * SIDE EFFECTS: 270 * 271 * NOTES: 272 */ 273 iso_hash(siso, hp) 274 struct sockaddr_iso *siso; /* address to perform hash on */ 275 struct afhash *hp; /* RETURN: hash info here */ 276 { 277 u_long buf[sizeof(struct sockaddr_iso)+1/4]; 278 register int bufsize; 279 280 281 bzero(buf, sizeof(buf)); 282 283 bufsize = iso_netof(&siso->siso_addr, buf); 284 hp->afh_nethash = iso_hashchar((caddr_t)buf, bufsize); 285 286 IFDEBUG(D_ROUTE) 287 printf("iso_hash: iso_netof: bufsize = %d\n", bufsize); 288 ENDDEBUG 289 290 hp->afh_hosthash = iso_hashchar((caddr_t)&siso->siso_addr, 291 siso->siso_addr.isoa_len); 292 293 IFDEBUG(D_ROUTE) 294 printf("iso_hash: %s: nethash = x%x, hosthash = x%x\n", 295 clnp_iso_addrp(&siso->siso_addr), hp->afh_nethash, 296 hp->afh_hosthash); 297 ENDDEBUG 298 } 299 /* 300 * FUNCTION: iso_netof 301 * 302 * PURPOSE: Extract the network portion of the iso address. 303 * The network portion of the iso address varies depending 304 * on the type of address. The network portion of the 305 * address will include the IDP. The network portion is: 306 * 307 * TYPE DESC 308 * t37 The AFI and x.121 (IDI) 309 * osinet The AFI, orgid, snetid 310 * rfc986 The AFI, vers and network part of 311 * internet address. 312 * 313 * RETURNS: number of bytes placed into buf. 314 * 315 * SIDE EFFECTS: 316 * 317 * NOTES: Buf is assumed to be big enough 318 */ 319 iso_netof(isoa, buf) 320 struct iso_addr *isoa; /* address */ 321 caddr_t buf; /* RESULT: network portion of address here */ 322 { 323 u_int len = 1; /* length of afi */ 324 325 switch (isoa->isoa_afi) { 326 case AFI_37: 327 /* 328 * Due to classic x.25 tunnel vision, there is no 329 * net portion of an x.121 address. For our purposes 330 * the AFI will do, so that all x.25 -type addresses 331 * map to the single x.25 SNPA. (Cannot have more than 332 * one, obviously). 333 */ 334 335 break; 336 337 /* case AFI_OSINET:*/ 338 case AFI_RFC986: { 339 u_short idi; /* value of idi */ 340 341 /* osinet and rfc986 have idi in the same place */ 342 CTOH(isoa->rfc986_idi[0], isoa->rfc986_idi[1], idi); 343 344 if (idi == IDI_OSINET) 345 /* 346 * Network portion of OSINET address can only be the IDI. Clearly, 347 * with one x25 interface, one could get to several orgids, and 348 * several snetids. 349 len += (ADDROSINET_IDI_LEN + OVLOSINET_ORGID_LEN + 350 OVLOSINET_SNETID_LEN); 351 */ 352 len += ADDROSINET_IDI_LEN; 353 else if (idi == IDI_RFC986) { 354 u_long inetaddr; 355 struct ovl_rfc986 *o986 = (struct ovl_rfc986 *)isoa; 356 357 /* bump len to include idi and version (1 byte) */ 358 len += ADDRRFC986_IDI_LEN + 1; 359 360 /* get inet addr long aligned */ 361 bcopy(o986->o986_inetaddr, &inetaddr, sizeof(inetaddr)); 362 inetaddr = ntohl(inetaddr); /* convert to host byte order */ 363 364 IFDEBUG(D_ROUTE) 365 printf("iso_netof: isoa "); 366 dump_buf(isoa, sizeof(*isoa)); 367 printf("iso_netof: inetaddr 0x%x ", inetaddr); 368 ENDDEBUG 369 370 /* bump len by size of network portion of inet address */ 371 if (IN_CLASSA(inetaddr)) { 372 len += 4-IN_CLASSA_NSHIFT/8; 373 IFDEBUG(D_ROUTE) 374 printf("iso_netof: class A net len is now %d\n", len); 375 ENDDEBUG 376 } else if (IN_CLASSB(inetaddr)) { 377 len += 4-IN_CLASSB_NSHIFT/8; 378 IFDEBUG(D_ROUTE) 379 printf("iso_netof: class B net len is now %d\n", len); 380 ENDDEBUG 381 } else { 382 len += 4-IN_CLASSC_NSHIFT/8; 383 IFDEBUG(D_ROUTE) 384 printf("iso_netof: class C net len is now %d\n", len); 385 ENDDEBUG 386 } 387 } else 388 len = 0; 389 } break; 390 391 default: 392 len = 0; 393 } 394 395 bcopy((caddr_t)isoa, buf, len); 396 IFDEBUG(D_ROUTE) 397 printf("in_netof: isoa "); 398 dump_buf(isoa, len); 399 printf("in_netof: net "); 400 dump_buf(buf, len); 401 ENDDEBUG 402 return len; 403 } 404 #endif notdef 405 /* 406 * Generic iso control operations (ioctl's). 407 * Ifp is 0 if not an interface-specific ioctl. 408 */ 409 /* ARGSUSED */ 410 iso_control(so, cmd, data, ifp) 411 struct socket *so; 412 int cmd; 413 caddr_t data; 414 register struct ifnet *ifp; 415 { 416 register struct iso_ifreq *ifr = (struct iso_ifreq *)data; 417 register struct iso_ifaddr *ia = 0; 418 register struct ifaddr *ifa; 419 struct iso_ifaddr *oia; 420 struct iso_aliasreq *ifra = (struct iso_aliasreq *)data; 421 int error, hostIsNew, maskIsNew; 422 423 /* 424 * Find address for this interface, if it exists. 425 */ 426 if (ifp) 427 for (ia = iso_ifaddr; ia; ia = ia->ia_next) 428 if (ia->ia_ifp == ifp) 429 break; 430 431 switch (cmd) { 432 433 case SIOCAIFADDR_ISO: 434 case SIOCDIFADDR_ISO: 435 if (ifra->ifra_addr.siso_family == AF_ISO) 436 for (oia = ia; ia; ia = ia->ia_next) { 437 if (ia->ia_ifp == ifp && 438 SAME_ISOADDR(&ia->ia_addr, &ifra->ifra_addr)) 439 break; 440 } 441 if (error = suser(u.u_cred, &u.u_acflag)) 442 return (error); 443 if (ifp == 0) 444 panic("iso_control"); 445 if (ia == (struct iso_ifaddr *)0) { 446 struct iso_ifaddr *nia; 447 if (cmd == SIOCDIFADDR_ISO) 448 return (EADDRNOTAVAIL); 449 MALLOC(nia, struct iso_ifaddr *, sizeof(*nia), 450 M_IFADDR, M_WAITOK); 451 if (nia == (struct iso_ifaddr *)0) 452 return (ENOBUFS); 453 bzero((caddr_t)nia, sizeof(*nia)); 454 if (ia = iso_ifaddr) { 455 for ( ; ia->ia_next; ia = ia->ia_next) 456 ; 457 ia->ia_next = nia; 458 } else 459 iso_ifaddr = nia; 460 ia = nia; 461 if (ifa = ifp->if_addrlist) { 462 for ( ; ifa->ifa_next; ifa = ifa->ifa_next) 463 ; 464 ifa->ifa_next = (struct ifaddr *) ia; 465 } else 466 ifp->if_addrlist = (struct ifaddr *) ia; 467 ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; 468 ia->ia_ifa.ifa_dstaddr 469 = (struct sockaddr *)&ia->ia_dstaddr; 470 ia->ia_ifa.ifa_netmask 471 = (struct sockaddr *)&ia->ia_sockmask; 472 ia->ia_ifp = ifp; 473 if (ifp != &loif) 474 iso_interfaces++; 475 } 476 break; 477 478 #define cmdbyte(x) (((x) >> 8) & 0xff) 479 default: 480 if (cmdbyte(cmd) == 'a') 481 return (snpac_ioctl(cmd, data)); 482 if (ia == (struct iso_ifaddr *)0) 483 return (EADDRNOTAVAIL); 484 break; 485 } 486 switch (cmd) { 487 488 case SIOCGIFADDR_ISO: 489 ifr->ifr_Addr = ia->ia_addr; 490 break; 491 492 case SIOCGIFDSTADDR_ISO: 493 if ((ifp->if_flags & IFF_POINTOPOINT) == 0) 494 return (EINVAL); 495 ifr->ifr_Addr = ia->ia_dstaddr; 496 break; 497 498 case SIOCGIFNETMASK_ISO: 499 ifr->ifr_Addr = ia->ia_sockmask; 500 break; 501 502 case SIOCAIFADDR_ISO: 503 maskIsNew = 0; hostIsNew = 1; error = u.u_error; 504 if (ia->ia_addr.siso_family == AF_ISO) { 505 if (ifra->ifra_addr.siso_len == 0) { 506 ifra->ifra_addr = ia->ia_addr; 507 hostIsNew = 0; 508 } else if (SAME_ISOADDR(&ia->ia_addr, &ifra->ifra_addr)) 509 hostIsNew = 0; 510 } 511 if (ifra->ifra_mask.siso_len) { 512 iso_ifscrub(ifp, ia); 513 ia->ia_sockmask = ifra->ifra_mask; 514 maskIsNew = 1; 515 } 516 if ((ifp->if_flags & IFF_POINTOPOINT) && 517 (ifra->ifra_dstaddr.siso_family == AF_ISO)) { 518 iso_ifscrub(ifp, ia); 519 ia->ia_dstaddr = ifra->ifra_dstaddr; 520 maskIsNew = 1; /* We lie; but the effect's the same */ 521 } 522 if (ifra->ifra_addr.siso_family == AF_ISO && 523 (hostIsNew || maskIsNew)) { 524 error = iso_ifinit(ifp, ia, &ifra->ifra_addr, 0); 525 } 526 if (ifra->ifra_snpaoffset) 527 ia->ia_snpaoffset = ifra->ifra_snpaoffset; 528 return (error); 529 530 case SIOCDIFADDR_ISO: 531 iso_ifscrub(ifp, ia); 532 if ((ifa = ifp->if_addrlist) == (struct ifaddr *)ia) 533 ifp->if_addrlist = ifa->ifa_next; 534 else { 535 while (ifa->ifa_next && 536 (ifa->ifa_next != (struct ifaddr *)ia)) 537 ifa = ifa->ifa_next; 538 if (ifa->ifa_next) 539 ifa->ifa_next = ((struct ifaddr *)ia)->ifa_next; 540 else 541 printf("Couldn't unlink isoifaddr from ifp\n"); 542 } 543 oia = ia; 544 if (oia == (ia = iso_ifaddr)) { 545 iso_ifaddr = ia->ia_next; 546 } else { 547 while (ia->ia_next && (ia->ia_next != oia)) { 548 ia = ia->ia_next; 549 } 550 if (ia->ia_next) 551 ia->ia_next = oia->ia_next; 552 else 553 printf("Didn't unlink isoifadr from list\n"); 554 } 555 free((caddr_t)oia, M_IFADDR); 556 break; 557 558 default: 559 if (ifp == 0 || ifp->if_ioctl == 0) 560 return (EOPNOTSUPP); 561 return ((*ifp->if_ioctl)(ifp, cmd, data)); 562 } 563 return (0); 564 } 565 566 /* 567 * Delete any existing route for an interface. 568 */ 569 iso_ifscrub(ifp, ia) 570 register struct ifnet *ifp; 571 register struct iso_ifaddr *ia; 572 { 573 if ((ia->ia_flags & IFA_ROUTE) == 0) 574 return; 575 if (ifp->if_flags & IFF_LOOPBACK) 576 rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST); 577 else if (ifp->if_flags & IFF_POINTOPOINT) 578 rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST); 579 else { 580 rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0); 581 } 582 ia->ia_flags &= ~IFA_ROUTE; 583 } 584 585 /* 586 * Initialize an interface's internet address 587 * and routing table entry. 588 */ 589 iso_ifinit(ifp, ia, siso, scrub) 590 register struct ifnet *ifp; 591 register struct iso_ifaddr *ia; 592 struct sockaddr_iso *siso; 593 { 594 struct sockaddr_iso oldaddr; 595 int s = splimp(), error; 596 597 oldaddr = ia->ia_addr; 598 ia->ia_addr = *siso; 599 /* 600 * Give the interface a chance to initialize 601 * if this is its first address, 602 * and to validate the address if necessary. 603 */ 604 if (ifp->if_ioctl && (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { 605 splx(s); 606 ia->ia_addr = oldaddr; 607 return (error); 608 } 609 if (scrub) { 610 ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr; 611 iso_ifscrub(ifp, ia); 612 ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; 613 } 614 /* 615 * Add route for the network. 616 */ 617 if (ifp->if_flags & IFF_LOOPBACK) { 618 ia->ia_ifa.ifa_dstaddr = ia->ia_ifa.ifa_addr; 619 error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP); 620 } else if (ifp->if_flags & IFF_POINTOPOINT && 621 ia->ia_dstaddr.siso_family == AF_ISO) 622 error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP); 623 else { 624 rt_maskedcopy(ia->ia_ifa.ifa_addr, ia->ia_ifa.ifa_dstaddr, 625 ia->ia_ifa.ifa_netmask); 626 error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP); 627 } 628 ia->ia_flags |= IFA_ROUTE; 629 splx(s); 630 return (error); 631 } 632 #ifdef notdef 633 634 struct ifaddr * 635 iso_ifwithidi(addr) 636 register struct sockaddr *addr; 637 { 638 register struct ifnet *ifp; 639 register struct ifaddr *ifa; 640 register u_int af = addr->sa_family; 641 642 if (af != AF_ISO) 643 return (0); 644 IFDEBUG(D_ROUTE) 645 printf(">>> iso_ifwithidi addr\n"); 646 dump_isoaddr( (struct sockaddr_iso *)(addr)); 647 printf("\n"); 648 ENDDEBUG 649 for (ifp = ifnet; ifp; ifp = ifp->if_next) { 650 IFDEBUG(D_ROUTE) 651 printf("iso_ifwithidi ifnet %s\n", ifp->if_name); 652 ENDDEBUG 653 for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) { 654 IFDEBUG(D_ROUTE) 655 printf("iso_ifwithidi address "); 656 dump_isoaddr( (struct sockaddr_iso *)(ifa->ifa_addr)); 657 ENDDEBUG 658 if (ifa->ifa_addr->sa_family != addr->sa_family) 659 continue; 660 661 #define IFA_SIS(ifa)\ 662 ((struct sockaddr_iso *)((ifa)->ifa_addr)) 663 664 IFDEBUG(D_ROUTE) 665 printf(" af same, args to iso_eqtype:\n"); 666 printf("0x%x ", IFA_SIS(ifa)->siso_addr); 667 printf(" 0x%x\n", 668 &(((struct sockaddr_iso *)addr)->siso_addr)); 669 ENDDEBUG 670 671 if (iso_eqtype(&(IFA_SIS(ifa)->siso_addr), 672 &(((struct sockaddr_iso *)addr)->siso_addr))) { 673 IFDEBUG(D_ROUTE) 674 printf("ifa_ifwithidi: ifa found\n"); 675 ENDDEBUG 676 return (ifa); 677 } 678 IFDEBUG(D_ROUTE) 679 printf(" iso_eqtype failed\n"); 680 ENDDEBUG 681 } 682 } 683 return ((struct ifaddr *)0); 684 } 685 686 #endif notdef 687 /* 688 * FUNCTION: iso_ck_addr 689 * 690 * PURPOSE: return true if the iso_addr passed is 691 * within the legal size limit for an iso address. 692 * 693 * RETURNS: true or false 694 * 695 * SIDE EFFECTS: 696 * 697 */ 698 iso_ck_addr(isoa) 699 struct iso_addr *isoa; /* address to check */ 700 { 701 return (isoa->isoa_len <= 20); 702 703 } 704 705 #ifdef notdef 706 /* 707 * FUNCTION: iso_eqtype 708 * 709 * PURPOSE: Determine if two iso addresses are of the same type. 710 * This is flaky. Really we should consider all type 47 addrs to be the 711 * same - but there do exist different structures for 47 addrs. 712 * Gosip adds a 3rd. 713 * 714 * RETURNS: true if the addresses are the same type 715 * 716 * SIDE EFFECTS: 717 * 718 * NOTES: By type, I mean rfc986, t37, or osinet 719 * 720 * This will first compare afis. If they match, then 721 * if the addr is not t37, the idis must be compared. 722 */ 723 iso_eqtype(isoaa, isoab) 724 struct iso_addr *isoaa; /* first addr to check */ 725 struct iso_addr *isoab; /* other addr to check */ 726 { 727 if (isoaa->isoa_afi == isoab->isoa_afi) { 728 if (isoaa->isoa_afi == AFI_37) 729 return(1); 730 else 731 return (!bcmp(&isoaa->isoa_u, &isoab->isoa_u, 2)); 732 } 733 return(0); 734 } 735 #endif notdef 736 /* 737 * FUNCTION: iso_localifa() 738 * 739 * PURPOSE: Find an interface addresss having a given destination 740 * or at least matching the net. 741 * 742 * RETURNS: ptr to an interface address 743 * 744 * SIDE EFFECTS: 745 * 746 * NOTES: 747 */ 748 struct iso_ifaddr * 749 iso_localifa(siso) 750 register struct sockaddr_iso *siso; 751 { 752 register struct iso_ifaddr *ia; 753 register char *cp1, *cp2, *cp3; 754 register struct ifnet *ifp; 755 struct iso_ifaddr *ia_maybe = 0; 756 /* 757 * We make one pass looking for both net matches and an exact 758 * dst addr. 759 */ 760 for (ia = iso_ifaddr; ia; ia = ia->ia_next) { 761 if ((ifp = ia->ia_ifp) == 0 || ((ifp->if_flags & IFF_UP) == 0)) 762 continue; 763 if (ifp->if_flags & IFF_POINTOPOINT) { 764 if ((ia->ia_dstaddr.siso_family == AF_ISO) && 765 SAME_ISOADDR(&ia->ia_dstaddr, siso)) 766 return (ia); 767 else 768 if (SAME_ISOADDR(&ia->ia_addr, siso)) 769 ia_maybe = ia; 770 continue; 771 } 772 if (ia->ia_sockmask.siso_len) { 773 char *cplim = ia->ia_sockmask.siso_len + (char *)&ia->ia_sockmask; 774 cp1 = ia->ia_sockmask.siso_data; 775 cp2 = siso->siso_data; 776 cp3 = ia->ia_addr.siso_data; 777 while (cp1 < cplim) 778 if (*cp1++ & (*cp2++ ^ *cp3++)) 779 goto next; 780 ia_maybe = ia; 781 } 782 if (SAME_ISOADDR(&ia->ia_addr, siso)) 783 return ia; 784 next:; 785 } 786 return ia_maybe; 787 } 788 789 #ifdef NARGOXTWENTYFIVE > 0 790 #include "cons.h" 791 #endif NARGOXTWENTYFIVE > 0 792 /* 793 * FUNCTION: iso_nlctloutput 794 * 795 * PURPOSE: Set options at the network level 796 * 797 * RETURNS: E* 798 * 799 * SIDE EFFECTS: 800 * 801 * NOTES: This could embody some of the functions of 802 * rclnp_ctloutput and cons_ctloutput. 803 */ 804 iso_nlctloutput(cmd, optname, pcb, m) 805 int cmd; /* command:set or get */ 806 int optname; /* option of interest */ 807 caddr_t pcb; /* nl pcb */ 808 struct mbuf *m; /* data for set, buffer for get */ 809 { 810 struct isopcb *isop = (struct isopcb *)pcb; 811 int error = 0; /* return value */ 812 caddr_t data; /* data for option */ 813 int data_len; /* data's length */ 814 815 IFDEBUG(D_ISO) 816 printf("iso_nlctloutput: cmd %x, opt %x, pcb %x, m %x\n", 817 cmd, optname, pcb, m); 818 ENDDEBUG 819 820 if ((cmd != PRCO_GETOPT) && (cmd != PRCO_SETOPT)) 821 return(EOPNOTSUPP); 822 823 data = mtod(m, caddr_t); 824 data_len = (m)->m_len; 825 826 IFDEBUG(D_ISO) 827 printf("iso_nlctloutput: data is:\n"); 828 dump_buf(data, data_len); 829 ENDDEBUG 830 831 switch (optname) { 832 833 #ifdef NARGOXTWENTYFIVE > 0 834 case CONSOPT_X25CRUD: 835 if (cmd == PRCO_GETOPT) { 836 error = EOPNOTSUPP; 837 break; 838 } 839 840 if (data_len > MAXX25CRUDLEN) { 841 error = EINVAL; 842 break; 843 } 844 845 IFDEBUG(D_ISO) 846 printf("iso_nlctloutput: setting x25 crud\n"); 847 ENDDEBUG 848 849 bcopy(data, (caddr_t)isop->isop_x25crud, (unsigned)data_len); 850 isop->isop_x25crud_len = data_len; 851 break; 852 #endif NARGOXTWENTYFIVE > 0 853 854 default: 855 error = EOPNOTSUPP; 856 } 857 858 return error; 859 } 860 #endif ISO 861 862 #ifdef ARGO_DEBUG 863 864 /* 865 * FUNCTION: dump_isoaddr 866 * 867 * PURPOSE: debugging 868 * 869 * RETURNS: nada 870 * 871 */ 872 dump_isoaddr(s) 873 struct sockaddr_iso *s; 874 { 875 char *clnp_saddr_isop(); 876 register int i; 877 878 if( s->siso_family == AF_ISO) { 879 printf("ISO address: suffixlen %d, %s\n", 880 s->siso_tlen, clnp_saddr_isop(s)); 881 } else if( s->siso_family == AF_INET) { 882 /* hack */ 883 struct sockaddr_in *sin = (struct sockaddr_in *)s; 884 885 printf("%d.%d.%d.%d: %d", 886 (sin->sin_addr.s_addr>>24)&0xff, 887 (sin->sin_addr.s_addr>>16)&0xff, 888 (sin->sin_addr.s_addr>>8)&0xff, 889 (sin->sin_addr.s_addr)&0xff, 890 sin->sin_port); 891 } 892 } 893 894 #endif ARGO_DEBUG 895