1 /* 2 * Copyright (c) 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * This code contributed by Atanu Ghosh (atanu@cs.ucl.ac.uk), 22 * University College London. 23 */ 24 25 /* 26 * Packet capture routine for dlpi under SunOS 5 27 * 28 * Notes: 29 * 30 * - Apparently the DLIOCRAW ioctl() is specific to SunOS. 31 * 32 * - There is a bug in bufmod(7) such that setting the snapshot 33 * length results in data being left of the front of the packet. 34 * 35 * - It might be desirable to use pfmod(7) to filter packets in the 36 * kernel. 37 */ 38 39 #ifndef lint 40 static const char rcsid[] = 41 "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.52.1.1 1999/10/07 23:46:40 mcr Exp $ (LBL)"; 42 #endif 43 44 #include <sys/types.h> 45 #include <sys/time.h> 46 #ifdef HAVE_SYS_BUFMOD_H 47 #include <sys/bufmod.h> 48 #endif 49 #include <sys/dlpi.h> 50 #ifdef HAVE_SYS_DLPI_EXT_H 51 #include <sys/dlpi_ext.h> 52 #endif 53 #ifdef HAVE_HPUX9 54 #include <sys/socket.h> 55 #endif 56 #ifdef DL_HP_PPA_ACK_OBS 57 #include <sys/stat.h> 58 #endif 59 #include <sys/stream.h> 60 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 61 #include <sys/systeminfo.h> 62 #endif 63 64 #ifdef HAVE_HPUX9 65 #include <net/if.h> 66 #endif 67 68 #include <ctype.h> 69 #ifdef HAVE_HPUX9 70 #include <nlist.h> 71 #endif 72 #include <errno.h> 73 #include <fcntl.h> 74 #include <memory.h> 75 #include <stdio.h> 76 #include <stdlib.h> 77 #include <string.h> 78 #include <stropts.h> 79 #include <unistd.h> 80 81 #include "pcap-int.h" 82 83 #include "gnuc.h" 84 #ifdef HAVE_OS_PROTO_H 85 #include "os-proto.h" 86 #endif 87 88 #ifndef PCAP_DEV_PREFIX 89 #define PCAP_DEV_PREFIX "/dev" 90 #endif 91 92 #define MAXDLBUF 8192 93 94 /* Forwards */ 95 static int dlattachreq(int, bpf_u_int32, char *); 96 static int dlbindack(int, char *, char *); 97 static int dlbindreq(int, bpf_u_int32, char *); 98 static int dlinfoack(int, char *, char *); 99 static int dlinforeq(int, char *); 100 static int dlokack(int, const char *, char *, char *); 101 static int recv_ack(int, int, const char *, char *, char *); 102 static int dlpromisconreq(int, bpf_u_int32, char *); 103 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 104 static char *get_release(bpf_u_int32 *, bpf_u_int32 *, bpf_u_int32 *); 105 #endif 106 static int send_request(int, char *, int, char *, char *); 107 #ifdef HAVE_SYS_BUFMOD_H 108 static int strioctl(int, int, int, char *); 109 #endif 110 #ifdef HAVE_HPUX9 111 static int dlpi_kread(int, off_t, void *, u_int, char *); 112 #endif 113 #ifdef HAVE_DEV_DLPI 114 static int get_dlpi_ppa(int, const char *, int, char *); 115 #endif 116 117 int 118 pcap_stats(pcap_t *p, struct pcap_stat *ps) 119 { 120 121 *ps = p->md.stat; 122 return (0); 123 } 124 125 /* XXX Needed by HP-UX (at least) */ 126 static bpf_u_int32 ctlbuf[MAXDLBUF]; 127 static struct strbuf ctl = { 128 MAXDLBUF, 129 0, 130 (char *)ctlbuf 131 }; 132 133 int 134 pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) 135 { 136 register int cc, n, caplen, origlen; 137 register u_char *bp, *ep, *pk; 138 register struct bpf_insn *fcode; 139 #ifdef HAVE_SYS_BUFMOD_H 140 register struct sb_hdr *sbp; 141 #ifdef LBL_ALIGN 142 struct sb_hdr sbhdr; 143 #endif 144 #endif 145 int flags; 146 struct strbuf data; 147 struct pcap_pkthdr pkthdr; 148 149 flags = 0; 150 cc = p->cc; 151 if (cc == 0) { 152 data.buf = (char *)p->buffer + p->offset; 153 data.maxlen = MAXDLBUF; 154 data.len = 0; 155 do { 156 if (getmsg(p->fd, &ctl, &data, &flags) < 0) { 157 /* Don't choke when we get ptraced */ 158 if (errno == EINTR) { 159 cc = 0; 160 continue; 161 } 162 strcpy(p->errbuf, pcap_strerror(errno)); 163 return (-1); 164 } 165 cc = data.len; 166 } while (cc == 0); 167 bp = p->buffer + p->offset; 168 } else 169 bp = p->bp; 170 171 /* Loop through packets */ 172 fcode = p->fcode.bf_insns; 173 ep = bp + cc; 174 n = 0; 175 #ifdef HAVE_SYS_BUFMOD_H 176 while (bp < ep) { 177 #ifdef LBL_ALIGN 178 if ((long)bp & 3) { 179 sbp = &sbhdr; 180 memcpy(sbp, bp, sizeof(*sbp)); 181 } else 182 #endif 183 sbp = (struct sb_hdr *)bp; 184 p->md.stat.ps_drop += sbp->sbh_drops; 185 pk = bp + sizeof(*sbp); 186 bp += sbp->sbh_totlen; 187 origlen = sbp->sbh_origlen; 188 caplen = sbp->sbh_msglen; 189 #else 190 origlen = cc; 191 caplen = min(p->snapshot, cc); 192 pk = bp; 193 bp += caplen; 194 #endif 195 ++p->md.stat.ps_recv; 196 if (bpf_filter(fcode, pk, origlen, caplen)) { 197 #ifdef HAVE_SYS_BUFMOD_H 198 pkthdr.ts = sbp->sbh_timestamp; 199 #else 200 (void)gettimeofday(&pkthdr.ts, NULL); 201 #endif 202 pkthdr.len = origlen; 203 pkthdr.caplen = caplen; 204 /* Insure caplen does not exceed snapshot */ 205 if (pkthdr.caplen > p->snapshot) 206 pkthdr.caplen = p->snapshot; 207 (*callback)(user, &pkthdr, pk); 208 if (++n >= cnt && cnt >= 0) { 209 p->cc = ep - bp; 210 p->bp = bp; 211 return (n); 212 } 213 } 214 #ifdef HAVE_SYS_BUFMOD_H 215 } 216 #endif 217 p->cc = 0; 218 return (n); 219 } 220 221 pcap_t * 222 pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) 223 { 224 register char *cp; 225 char *eos; 226 register pcap_t *p; 227 register int ppa; 228 register dl_info_ack_t *infop; 229 #ifdef HAVE_SYS_BUFMOD_H 230 bpf_u_int32 ss, flag; 231 #ifdef HAVE_SOLARIS 232 register char *release; 233 bpf_u_int32 osmajor, osminor, osmicro; 234 #endif 235 #endif 236 bpf_u_int32 buf[MAXDLBUF]; 237 char dname[100]; 238 #ifndef HAVE_DEV_DLPI 239 char dname2[100]; 240 #endif 241 242 p = (pcap_t *)malloc(sizeof(*p)); 243 if (p == NULL) { 244 strcpy(ebuf, pcap_strerror(errno)); 245 return (NULL); 246 } 247 memset(p, 0, sizeof(*p)); 248 249 /* 250 ** Determine device and ppa 251 */ 252 cp = strpbrk(device, "0123456789"); 253 if (cp == NULL) { 254 sprintf(ebuf, "%s missing unit number", device); 255 goto bad; 256 } 257 ppa = strtol(cp, &eos, 10); 258 if (*eos != '\0') { 259 sprintf(ebuf, "%s bad unit number", device); 260 goto bad; 261 } 262 263 if (*device == '/') 264 strcpy(dname, device); 265 else 266 sprintf(dname, "%s/%s", PCAP_DEV_PREFIX, device); 267 #ifdef HAVE_DEV_DLPI 268 /* Map network device to /dev/dlpi unit */ 269 cp = "/dev/dlpi"; 270 if ((p->fd = open(cp, O_RDWR)) < 0) { 271 sprintf(ebuf, "%s: %s", cp, pcap_strerror(errno)); 272 goto bad; 273 } 274 /* Map network interface to /dev/dlpi unit */ 275 ppa = get_dlpi_ppa(p->fd, dname, ppa, ebuf); 276 if (ppa < 0) 277 goto bad; 278 #else 279 /* Try device without unit number */ 280 strcpy(dname2, dname); 281 cp = strchr(dname, *cp); 282 *cp = '\0'; 283 if ((p->fd = open(dname, O_RDWR)) < 0) { 284 if (errno != ENOENT) { 285 sprintf(ebuf, "%s: %s", dname, pcap_strerror(errno)); 286 goto bad; 287 } 288 289 /* Try again with unit number */ 290 if ((p->fd = open(dname2, O_RDWR)) < 0) { 291 sprintf(ebuf, "%s: %s", dname2, pcap_strerror(errno)); 292 goto bad; 293 } 294 /* XXX Assume unit zero */ 295 ppa = 0; 296 } 297 #endif 298 299 p->snapshot = snaplen; 300 301 /* 302 ** Attach if "style 2" provider 303 */ 304 if (dlinforeq(p->fd, ebuf) < 0 || 305 dlinfoack(p->fd, (char *)buf, ebuf) < 0) 306 goto bad; 307 infop = &((union DL_primitives *)buf)->info_ack; 308 if (infop->dl_provider_style == DL_STYLE2 && 309 (dlattachreq(p->fd, ppa, ebuf) < 0 || 310 dlokack(p->fd, "attach", (char *)buf, ebuf) < 0)) 311 goto bad; 312 /* 313 ** Bind (defer if using HP-UX 9 or HP-UX 10.20, totally skip if 314 ** using SINIX) 315 */ 316 #if !defined(HAVE_HPUX9) && !defined(HAVE_HPUX10_20) && !defined(sinix) 317 if (dlbindreq(p->fd, 0, ebuf) < 0 || 318 dlbindack(p->fd, (char *)buf, ebuf) < 0) 319 goto bad; 320 #endif 321 322 if (promisc) { 323 /* 324 ** Enable promiscuous 325 */ 326 if (dlpromisconreq(p->fd, DL_PROMISC_PHYS, ebuf) < 0 || 327 dlokack(p->fd, "promisc_phys", (char *)buf, ebuf) < 0) 328 goto bad; 329 330 /* 331 ** Try to enable multicast (you would have thought 332 ** promiscuous would be sufficient). (Skip if using 333 ** HP-UX or SINIX) 334 */ 335 #if !defined(__hpux) && !defined(sinix) 336 if (dlpromisconreq(p->fd, DL_PROMISC_MULTI, ebuf) < 0 || 337 dlokack(p->fd, "promisc_multi", (char *)buf, ebuf) < 0) 338 fprintf(stderr, 339 "WARNING: DL_PROMISC_MULTI failed (%s)\n", ebuf); 340 #endif 341 } 342 /* 343 ** Try to enable sap (when not in promiscuous mode when using 344 ** using HP-UX and never under SINIX) 345 */ 346 #ifndef sinix 347 if ( 348 #ifdef __hpux 349 !promisc && 350 #endif 351 (dlpromisconreq(p->fd, DL_PROMISC_SAP, ebuf) < 0 || 352 dlokack(p->fd, "promisc_sap", (char *)buf, ebuf) < 0)) { 353 /* Not fatal if promisc since the DL_PROMISC_PHYS worked */ 354 if (promisc) 355 fprintf(stderr, 356 "WARNING: DL_PROMISC_SAP failed (%s)\n", ebuf); 357 else 358 goto bad; 359 } 360 #endif 361 362 /* 363 ** HP-UX 9 and HP-UX 10.20 must bind after setting promiscuous 364 ** options) 365 */ 366 #if defined(HAVE_HPUX9) || defined(HAVE_HPUX10_20) 367 if (dlbindreq(p->fd, 0, ebuf) < 0 || 368 dlbindack(p->fd, (char *)buf, ebuf) < 0) 369 goto bad; 370 #endif 371 372 /* 373 ** Determine link type 374 */ 375 if (dlinforeq(p->fd, ebuf) < 0 || 376 dlinfoack(p->fd, (char *)buf, ebuf) < 0) 377 goto bad; 378 379 infop = &((union DL_primitives *)buf)->info_ack; 380 switch (infop->dl_mac_type) { 381 382 case DL_CSMACD: 383 case DL_ETHER: 384 p->linktype = DLT_EN10MB; 385 p->offset = 2; 386 break; 387 388 case DL_FDDI: 389 p->linktype = DLT_FDDI; 390 p->offset = 3; 391 break; 392 393 default: 394 sprintf(ebuf, "unknown mac type 0x%lu", infop->dl_mac_type); 395 goto bad; 396 } 397 398 #ifdef DLIOCRAW 399 /* 400 ** This is a non standard SunOS hack to get the ethernet header. 401 */ 402 if (strioctl(p->fd, DLIOCRAW, 0, NULL) < 0) { 403 sprintf(ebuf, "DLIOCRAW: %s", pcap_strerror(errno)); 404 goto bad; 405 } 406 #endif 407 408 #ifdef HAVE_SYS_BUFMOD_H 409 /* 410 ** Another non standard call to get the data nicely buffered 411 */ 412 if (ioctl(p->fd, I_PUSH, "bufmod") != 0) { 413 sprintf(ebuf, "I_PUSH bufmod: %s", pcap_strerror(errno)); 414 goto bad; 415 } 416 417 /* 418 ** Now that the bufmod is pushed lets configure it. 419 ** 420 ** There is a bug in bufmod(7). When dealing with messages of 421 ** less than snaplen size it strips data from the beginning not 422 ** the end. 423 ** 424 ** This bug is supposed to be fixed in 5.3.2. Also, there is a 425 ** patch available. Ask for bugid 1149065. 426 */ 427 ss = snaplen; 428 #ifdef HAVE_SOLARIS 429 release = get_release(&osmajor, &osminor, &osmicro); 430 if (osmajor == 5 && (osminor <= 2 || (osminor == 3 && osmicro < 2)) && 431 getenv("BUFMOD_FIXED") == NULL) { 432 fprintf(stderr, 433 "WARNING: bufmod is broken in SunOS %s; ignoring snaplen.\n", 434 release); 435 ss = 0; 436 } 437 #endif 438 if (ss > 0 && 439 strioctl(p->fd, SBIOCSSNAP, sizeof(ss), (char *)&ss) != 0) { 440 sprintf(ebuf, "SBIOCSSNAP: %s", pcap_strerror(errno)); 441 goto bad; 442 } 443 444 /* 445 ** Set up the bufmod flags 446 */ 447 if (strioctl(p->fd, SBIOCGFLAGS, sizeof(flag), (char *)&flag) < 0) { 448 sprintf(ebuf, "SBIOCGFLAGS: %s", pcap_strerror(errno)); 449 goto bad; 450 } 451 flag |= SB_NO_DROPS; 452 if (strioctl(p->fd, SBIOCSFLAGS, sizeof(flag), (char *)&flag) != 0) { 453 sprintf(ebuf, "SBIOCSFLAGS: %s", pcap_strerror(errno)); 454 goto bad; 455 } 456 /* 457 ** Set up the bufmod timeout 458 */ 459 if (to_ms != 0) { 460 struct timeval to; 461 462 to.tv_sec = to_ms / 1000; 463 to.tv_usec = (to_ms * 1000) % 1000000; 464 if (strioctl(p->fd, SBIOCSTIME, sizeof(to), (char *)&to) != 0) { 465 sprintf(ebuf, "SBIOCSTIME: %s", pcap_strerror(errno)); 466 goto bad; 467 } 468 } 469 #endif 470 471 /* 472 ** As the last operation flush the read side. 473 */ 474 if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) { 475 sprintf(ebuf, "FLUSHR: %s", pcap_strerror(errno)); 476 goto bad; 477 } 478 /* Allocate data buffer */ 479 p->bufsize = MAXDLBUF * sizeof(bpf_u_int32); 480 p->buffer = (u_char *)malloc(p->bufsize + p->offset); 481 482 return (p); 483 bad: 484 free(p); 485 return (NULL); 486 } 487 488 int 489 pcap_setfilter(pcap_t *p, struct bpf_program *fp) 490 { 491 492 p->fcode = *fp; 493 return (0); 494 } 495 496 static int 497 send_request(int fd, char *ptr, int len, char *what, char *ebuf) 498 { 499 struct strbuf ctl; 500 int flags; 501 502 ctl.maxlen = 0; 503 ctl.len = len; 504 ctl.buf = ptr; 505 506 flags = 0; 507 if (putmsg(fd, &ctl, (struct strbuf *) NULL, flags) < 0) { 508 sprintf(ebuf, "send_request: putmsg \"%s\": %s", 509 what, pcap_strerror(errno)); 510 return (-1); 511 } 512 return (0); 513 } 514 515 static int 516 recv_ack(int fd, int size, const char *what, char *bufp, char *ebuf) 517 { 518 union DL_primitives *dlp; 519 struct strbuf ctl; 520 int flags; 521 522 ctl.maxlen = MAXDLBUF; 523 ctl.len = 0; 524 ctl.buf = bufp; 525 526 flags = 0; 527 if (getmsg(fd, &ctl, (struct strbuf*)NULL, &flags) < 0) { 528 sprintf(ebuf, "recv_ack: %s getmsg: %s", 529 what, pcap_strerror(errno)); 530 return (-1); 531 } 532 533 dlp = (union DL_primitives *) ctl.buf; 534 switch (dlp->dl_primitive) { 535 536 case DL_INFO_ACK: 537 case DL_BIND_ACK: 538 case DL_OK_ACK: 539 #ifdef DL_HP_PPA_ACK 540 case DL_HP_PPA_ACK: 541 #endif 542 543 /* These are OK */ 544 break; 545 546 case DL_ERROR_ACK: 547 switch (dlp->error_ack.dl_errno) { 548 549 case DL_BADPPA: 550 sprintf(ebuf, "recv_ack: %s bad ppa (device unit)", 551 what); 552 break; 553 554 555 case DL_SYSERR: 556 sprintf(ebuf, "recv_ack: %s: %s", 557 what, pcap_strerror(dlp->error_ack.dl_unix_errno)); 558 break; 559 560 case DL_UNSUPPORTED: 561 sprintf(ebuf, 562 "recv_ack: %s: Service not supplied by provider", 563 what); 564 break; 565 566 default: 567 sprintf(ebuf, "recv_ack: %s error 0x%x", 568 what, (bpf_u_int32)dlp->error_ack.dl_errno); 569 break; 570 } 571 return (-1); 572 573 default: 574 sprintf(ebuf, "recv_ack: %s unexpected primitive ack 0x%x ", 575 what, (bpf_u_int32)dlp->dl_primitive); 576 return (-1); 577 } 578 579 if (ctl.len < size) { 580 sprintf(ebuf, "recv_ack: %s ack too small (%d < %d)", 581 what, ctl.len, size); 582 return (-1); 583 } 584 return (ctl.len); 585 } 586 587 static int 588 dlattachreq(int fd, bpf_u_int32 ppa, char *ebuf) 589 { 590 dl_attach_req_t req; 591 592 req.dl_primitive = DL_ATTACH_REQ; 593 req.dl_ppa = ppa; 594 595 return (send_request(fd, (char *)&req, sizeof(req), "attach", ebuf)); 596 } 597 598 static int 599 dlbindreq(int fd, bpf_u_int32 sap, char *ebuf) 600 { 601 602 dl_bind_req_t req; 603 604 memset((char *)&req, 0, sizeof(req)); 605 req.dl_primitive = DL_BIND_REQ; 606 #ifdef DL_HP_RAWDLS 607 req.dl_max_conind = 1; /* XXX magic number */ 608 /* 22 is INSAP as per the HP-UX DLPI Programmer's Guide */ 609 req.dl_sap = 22; 610 req.dl_service_mode = DL_HP_RAWDLS; 611 #else 612 req.dl_sap = sap; 613 #ifdef DL_CLDLS 614 req.dl_service_mode = DL_CLDLS; 615 #endif 616 #endif 617 618 return (send_request(fd, (char *)&req, sizeof(req), "bind", ebuf)); 619 } 620 621 static int 622 dlbindack(int fd, char *bufp, char *ebuf) 623 { 624 625 return (recv_ack(fd, DL_BIND_ACK_SIZE, "bind", bufp, ebuf)); 626 } 627 628 static int 629 dlpromisconreq(int fd, bpf_u_int32 level, char *ebuf) 630 { 631 dl_promiscon_req_t req; 632 633 req.dl_primitive = DL_PROMISCON_REQ; 634 req.dl_level = level; 635 636 return (send_request(fd, (char *)&req, sizeof(req), "promiscon", ebuf)); 637 } 638 639 static int 640 dlokack(int fd, const char *what, char *bufp, char *ebuf) 641 { 642 643 return (recv_ack(fd, DL_OK_ACK_SIZE, what, bufp, ebuf)); 644 } 645 646 647 static int 648 dlinforeq(int fd, char *ebuf) 649 { 650 dl_info_req_t req; 651 652 req.dl_primitive = DL_INFO_REQ; 653 654 return (send_request(fd, (char *)&req, sizeof(req), "info", ebuf)); 655 } 656 657 static int 658 dlinfoack(int fd, char *bufp, char *ebuf) 659 { 660 661 return (recv_ack(fd, DL_INFO_ACK_SIZE, "info", bufp, ebuf)); 662 } 663 664 #ifdef HAVE_SYS_BUFMOD_H 665 static int 666 strioctl(int fd, int cmd, int len, char *dp) 667 { 668 struct strioctl str; 669 int rc; 670 671 str.ic_cmd = cmd; 672 str.ic_timout = -1; 673 str.ic_len = len; 674 str.ic_dp = dp; 675 rc = ioctl(fd, I_STR, &str); 676 677 if (rc < 0) 678 return (rc); 679 else 680 return (str.ic_len); 681 } 682 #endif 683 684 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 685 static char * 686 get_release(bpf_u_int32 *majorp, bpf_u_int32 *minorp, bpf_u_int32 *microp) 687 { 688 char *cp; 689 static char buf[32]; 690 691 *majorp = 0; 692 *minorp = 0; 693 *microp = 0; 694 if (sysinfo(SI_RELEASE, buf, sizeof(buf)) < 0) 695 return ("?"); 696 cp = buf; 697 if (!isdigit(*cp)) 698 return (buf); 699 *majorp = strtol(cp, &cp, 10); 700 if (*cp++ != '.') 701 return (buf); 702 *minorp = strtol(cp, &cp, 10); 703 if (*cp++ != '.') 704 return (buf); 705 *microp = strtol(cp, &cp, 10); 706 return (buf); 707 } 708 #endif 709 710 #ifdef DL_HP_PPA_ACK_OBS 711 /* 712 * Under HP-UX 10, we can ask for the ppa 713 */ 714 715 716 /* Determine ppa number that specifies ifname */ 717 static int 718 get_dlpi_ppa(register int fd, register const char *device, register int unit, 719 register char *ebuf) 720 { 721 register dl_hp_ppa_ack_t *ap; 722 register dl_hp_ppa_info_t *ip; 723 register int i; 724 register u_long majdev; 725 dl_hp_ppa_req_t req; 726 struct stat statbuf; 727 bpf_u_int32 buf[MAXDLBUF]; 728 729 if (stat(device, &statbuf) < 0) { 730 sprintf(ebuf, "stat: %s: %s", device, pcap_strerror(errno)); 731 return (-1); 732 } 733 majdev = major(statbuf.st_rdev); 734 735 memset((char *)&req, 0, sizeof(req)); 736 req.dl_primitive = DL_HP_PPA_REQ; 737 738 memset((char *)buf, 0, sizeof(buf)); 739 if (send_request(fd, (char *)&req, sizeof(req), "hpppa", ebuf) < 0 || 740 recv_ack(fd, DL_HP_PPA_ACK_SIZE, "hpppa", (char *)buf, ebuf) < 0) 741 return (-1); 742 743 ap = (dl_hp_ppa_ack_t *)buf; 744 ip = (dl_hp_ppa_info_t *)((u_char *)ap + ap->dl_offset); 745 746 for(i = 0; i < ap->dl_count; i++) { 747 if (ip->dl_mjr_num == majdev && ip->dl_instance_num == unit) 748 break; 749 750 ip = (dl_hp_ppa_info_t *)((u_char *)ip + ip->dl_next_offset); 751 } 752 if (i == ap->dl_count) { 753 sprintf(ebuf, "can't find PPA for %s", device); 754 return (-1); 755 } 756 if (ip->dl_hdw_state == HDW_DEAD) { 757 sprintf(ebuf, "%s: hardware state: DOWN\n", device); 758 return (-1); 759 } 760 return ((int)ip->dl_ppa); 761 } 762 #endif 763 764 #ifdef HAVE_HPUX9 765 /* 766 * Under HP-UX 9, there is no good way to determine the ppa. 767 * So punt and read it from /dev/kmem. 768 */ 769 static struct nlist nl[] = { 770 #define NL_IFNET 0 771 { "ifnet" }, 772 { "" } 773 }; 774 775 static char path_vmunix[] = "/hp-ux"; 776 777 /* Determine ppa number that specifies ifname */ 778 static int 779 get_dlpi_ppa(register int fd, register const char *ifname, register int unit, 780 register char *ebuf) 781 { 782 register const char *cp; 783 register int kd; 784 void *addr; 785 struct ifnet ifnet; 786 char if_name[sizeof(ifnet.if_name)], tifname[32]; 787 788 cp = strrchr(ifname, '/'); 789 if (cp != NULL) 790 ifname = cp + 1; 791 if (nlist(path_vmunix, &nl) < 0) { 792 sprintf(ebuf, "nlist %s failed", path_vmunix); 793 return (-1); 794 } 795 if (nl[NL_IFNET].n_value == 0) { 796 sprintf(ebuf, "could't find %s kernel symbol", 797 nl[NL_IFNET].n_name); 798 return (-1); 799 } 800 kd = open("/dev/kmem", O_RDONLY); 801 if (kd < 0) { 802 sprintf(ebuf, "kmem open: %s", pcap_strerror(errno)); 803 return (-1); 804 } 805 if (dlpi_kread(kd, nl[NL_IFNET].n_value, 806 &addr, sizeof(addr), ebuf) < 0) { 807 close(kd); 808 return (-1); 809 } 810 for (; addr != NULL; addr = ifnet.if_next) { 811 if (dlpi_kread(kd, (off_t)addr, 812 &ifnet, sizeof(ifnet), ebuf) < 0 || 813 dlpi_kread(kd, (off_t)ifnet.if_name, 814 if_name, sizeof(if_name), ebuf) < 0) { 815 (void)close(kd); 816 return (-1); 817 } 818 sprintf(tifname, "%.*s%d", 819 (int)sizeof(if_name), if_name, ifnet.if_unit); 820 if (strcmp(tifname, ifname) == 0) 821 return (ifnet.if_index); 822 } 823 824 sprintf(ebuf, "Can't find %s", ifname); 825 return (-1); 826 } 827 828 static int 829 dlpi_kread(register int fd, register off_t addr, 830 register void *buf, register u_int len, register char *ebuf) 831 { 832 register int cc; 833 834 if (lseek(fd, addr, SEEK_SET) < 0) { 835 sprintf(ebuf, "lseek: %s", pcap_strerror(errno)); 836 return (-1); 837 } 838 cc = read(fd, buf, len); 839 if (cc < 0) { 840 sprintf(ebuf, "read: %s", pcap_strerror(errno)); 841 return (-1); 842 } else if (cc != len) { 843 sprintf(ebuf, "short read (%d != %d)", cc, len); 844 return (-1); 845 } 846 return (cc); 847 } 848 #endif 849