2 * Copyright (c) 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
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
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.
21 * This code contributed by Atanu Ghosh (atanu@cs.ucl.ac.uk),
22 * University College London, and subsequently modified by
23 * Guy Harris (guy@alum.mit.edu), Mark Pizzolato
24 * <List-tcpdump-workers@subscriptions.pizzolato.net>,
25 * Mark C. Brown (mbrown@hp.com), and Sagun Shakya <Sagun.Shakya@Sun.COM>.
29 * Packet capture routine for DLPI under SunOS 5, HP-UX 9/10/11, and AIX.
33 * - The DLIOCRAW ioctl() is specific to SunOS.
35 * - There is a bug in bufmod(7) such that setting the snapshot
36 * length results in data being left of the front of the packet.
38 * - It might be desirable to use pfmod(7) to filter packets in the
39 * kernel when possible.
41 * - An older version of the HP-UX DLPI Programmer's Guide, which
42 * I think was advertised as the 10.20 version, used to be available
45 * http://docs.hp.com/hpux/onlinedocs/B2355-90093/B2355-90093.html
47 * but is no longer available; it can still be found at
49 * http://h21007.www2.hp.com/dspp/files/unprotected/Drivers/Docs/Refs/B2355-90093.pdf
53 * - The HP-UX 10.x, 11.0, and 11i v1.6 version of the HP-UX DLPI
54 * Programmer's Guide, which I think was once advertised as the
55 * 11.00 version is available at
57 * http://docs.hp.com/en/B2355-90139/index.html
59 * - The HP-UX 11i v2 version of the HP-UX DLPI Programmer's Guide
62 * http://docs.hp.com/en/B2355-90871/index.html
64 * - All of the HP documents describe raw-mode services, which are
65 * what we use if DL_HP_RAWDLS is defined. XXX - we use __hpux
66 * in some places to test for HP-UX, but use DL_HP_RAWDLS in
67 * other places; do we support any versions of HP-UX without
72 static const char rcsid[] _U_ =
73 "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.116.2.11 2008-04-14 20:41:51 guy Exp $ (LBL)";
80 #include <sys/types.h>
82 #ifdef HAVE_SYS_BUFMOD_H
83 #include <sys/bufmod.h>
86 #ifdef HAVE_SYS_DLPI_EXT_H
87 #include <sys/dlpi_ext.h>
90 #include <sys/socket.h>
95 #include <sys/stream.h>
96 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H)
97 #include <sys/systeminfo.h>
120 #define INT_MAX 2147483647
123 #include "pcap-int.h"
124 #include "dlpisubs.h"
126 #ifdef HAVE_OS_PROTO_H
127 #include "os-proto.h"
130 #ifndef PCAP_DEV_PREFIX
132 #define PCAP_DEV_PREFIX "/dev/dlpi"
134 #define PCAP_DEV_PREFIX "/dev"
138 #define MAXDLBUF 8192
141 static char *split_dname(char *, int *, char *);
142 static int dl_doattach(int, int, char *);
144 static int dl_dohpuxbind(int, char *);
146 static int dlattachreq(int, bpf_u_int32, char *);
147 static int dlbindreq(int, bpf_u_int32, char *);
148 static int dlbindack(int, char *, char *, int *);
149 static int dlpromisconreq(int, bpf_u_int32, char *);
150 static int dlokack(int, const char *, char *, char *);
151 static int dlinforeq(int, char *);
152 static int dlinfoack(int, char *, char *);
154 #ifdef HAVE_DLPI_PASSIVE
155 static void dlpassive(int, char *);
159 static int dlrawdatareq(int, const u_char *, int);
161 static int recv_ack(int, int, const char *, char *, char *, int *);
162 static char *dlstrerror(bpf_u_int32);
163 static char *dlprim(bpf_u_int32);
164 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H)
165 static char *get_release(bpf_u_int32 *, bpf_u_int32 *, bpf_u_int32 *);
167 static int send_request(int, char *, int, char *, char *);
169 static int dlpi_kread(int, off_t, void *, u_int, char *);
172 static int get_dlpi_ppa(int, const char *, int, char *);
175 /* XXX Needed by HP-UX (at least) */
176 static bpf_u_int32 ctlbuf[MAXDLBUF];
177 static struct strbuf ctl = {
184 pcap_read_dlpi(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
194 data.buf = (char *)p->buffer + p->offset;
195 data.maxlen = p->bufsize;
199 * Has "pcap_breakloop()" been called?
203 * Yes - clear the flag that indicates
204 * that it has, and return -2 to
205 * indicate that we were told to
206 * break out of the loop.
212 * XXX - check for the DLPI primitive, which
213 * would be DL_HP_RAWDATA_IND on HP-UX
214 * if we're in raw mode?
216 if (getmsg(p->fd, &ctl, &data, &flags) < 0) {
217 /* Don't choke when we get ptraced */
227 strlcpy(p->errbuf, pcap_strerror(errno),
233 bp = p->buffer + p->offset;
237 return (pcap_process_pkts(p, callback, user, cnt, bp, cc));
241 pcap_inject_dlpi(pcap_t *p, const void *buf, size_t size)
245 #if defined(DLIOCRAW)
246 ret = write(p->fd, buf, size);
248 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s",
249 pcap_strerror(errno));
252 #elif defined(DL_HP_RAWDLS)
253 if (p->send_fd < 0) {
254 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
255 "send: Output FD couldn't be opened");
258 ret = dlrawdatareq(p->send_fd, buf, size);
260 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s",
261 pcap_strerror(errno));
265 * putmsg() returns either 0 or -1; it doesn't indicate how
266 * many bytes were written (presumably they were all written
267 * or none of them were written). OpenBSD's pcap_inject()
268 * returns the number of bytes written, so, for API compatibility,
269 * we return the number of bytes we were told to write.
272 #else /* no raw mode */
274 * XXX - this is a pain, because you might have to extract
275 * the address from the packet and use it in a DL_UNITDATA_REQ
276 * request. That would be dependent on the link-layer type.
278 * I also don't know what SAP you'd have to bind the descriptor
279 * to, or whether you'd need separate "receive" and "send" FDs,
280 * nor do I know whether you'd need different bindings for
281 * D/I/X Ethernet and 802.3, or for {FDDI,Token Ring} plus
282 * 802.2 and {FDDI,Token Ring} plus 802.2 plus SNAP.
284 * So, for now, we just return a "you can't send" indication,
285 * and leave it up to somebody with a DLPI-based system lacking
286 * both DLIOCRAW and DL_HP_RAWDLS to supply code to implement
287 * packet transmission on that system. If they do, they should
288 * send it to us - but should not send us code that assumes
289 * Ethernet; if the code doesn't work on non-Ethernet interfaces,
290 * it should check "p->linktype" and reject the send request if
291 * it's anything other than DLT_EN10MB.
293 strlcpy(p->errbuf, "send: Not supported on this version of this OS",
296 #endif /* raw mode */
301 #define DL_IPATM 0x12 /* ATM Classical IP interface */
309 #define A_GET_UNITS (('A'<<8)|118)
310 #endif /* A_GET_UNITS */
311 #ifndef A_PROMISCON_REQ
312 #define A_PROMISCON_REQ (('A'<<8)|121)
313 #endif /* A_PROMISCON_REQ */
314 #endif /* HAVE_SOLARIS */
317 pcap_cleanup_dlpi(pcap_t *p)
319 if (p->send_fd >= 0) {
323 pcap_cleanup_live_common(p);
327 pcap_activate_dlpi(pcap_t *p)
334 register dl_info_ack_t *infop;
335 #ifdef HAVE_SYS_BUFMOD_H
338 register char *release;
339 bpf_u_int32 osmajor, osminor, osmicro;
342 bpf_u_int32 buf[MAXDLBUF];
344 #ifndef HAVE_DEV_DLPI
347 int status = PCAP_ERROR;
351 ** Remove any "/dev/" on the front of the device.
353 cp = strrchr(p->opt.source, '/');
355 strlcpy(dname, p->opt.source, sizeof(dname));
357 strlcpy(dname, cp + 1, sizeof(dname));
360 * Split the device name into a device type name and a unit number;
361 * chop off the unit number, so "dname" is just a device type name.
363 cp = split_dname(dname, &ppa, p->errbuf);
365 status = PCAP_ERROR_NO_SUCH_DEVICE;
371 * Use "/dev/dlpi" as the device.
373 * XXX - HP's DLPI Programmer's Guide for HP-UX 11.00 says that
374 * the "dl_mjr_num" field is for the "major number of interface
375 * driver"; that's the major of "/dev/dlpi" on the system on
376 * which I tried this, but there may be DLPI devices that
377 * use a different driver, in which case we may need to
378 * search "/dev" for the appropriate device with that major
379 * device number, rather than hardwiring "/dev/dlpi".
382 if ((p->fd = open(cp, O_RDWR)) < 0) {
383 if (errno == EPERM || errno == EACCES)
384 status = PCAP_ERROR_PERM_DENIED;
385 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
386 "%s: %s", cp, pcap_strerror(errno));
392 * XXX - HP-UX 10.20 and 11.xx don't appear to support sending and
393 * receiving packets on the same descriptor - you need separate
394 * descriptors for sending and receiving, bound to different SAPs.
396 * If the open fails, we just leave -1 in "p->send_fd" and reject
397 * attempts to send packets, just as if, in pcap-bpf.c, we fail
398 * to open the BPF device for reading and writing, we just try
399 * to open it for reading only and, if that succeeds, just let
400 * the send attempts fail.
402 p->send_fd = open(cp, O_RDWR);
406 * Get a table of all PPAs for that device, and search that
407 * table for the specified device type name and unit number.
409 ppa = get_dlpi_ppa(p->fd, dname, ppa, p->errbuf);
416 * If the device name begins with "/", assume it begins with
417 * the pathname of the directory containing the device to open;
418 * otherwise, concatenate the device directory name and the
421 if (*p->opt.source == '/')
422 strlcpy(dname, p->opt.source, sizeof(dname));
424 snprintf(dname, sizeof(dname), "%s/%s", PCAP_DEV_PREFIX,
428 * Get the unit number, and a pointer to the end of the device
431 cp = split_dname(dname, &ppa, p->errbuf);
433 status = PCAP_ERROR_NO_SUCH_DEVICE;
438 * Make a copy of the device pathname, and then remove the unit
439 * number from the device pathname.
441 strlcpy(dname2, dname, sizeof(dname));
444 /* Try device without unit number */
445 if ((p->fd = open(dname, O_RDWR)) < 0) {
446 if (errno != ENOENT) {
448 status = PCAP_ERROR_PERM_DENIED;
449 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s", dname,
450 pcap_strerror(errno));
454 /* Try again with unit number */
455 if ((p->fd = open(dname2, O_RDWR)) < 0) {
456 if (errno == ENOENT) {
457 status = PCAP_ERROR_NO_SUCH_DEVICE;
460 * We provide an error message even
461 * for this error, for diagnostic
462 * purposes (so that, for example,
463 * the app can show the message if the
466 * In it, we just report "No DLPI device
467 * found" with the device name, so people
468 * don't get confused and think, for example,
469 * that if they can't capture on "lo0"
470 * on Solaris the fix is to change libpcap
471 * (or the application that uses it) to
472 * look for something other than "/dev/lo0",
473 * as the fix is to look for an operating
474 * system other than Solaris - you just
475 * *can't* capture on a loopback interface
476 * on Solaris, the lack of a DLPI device
477 * for the loopback interface is just a
478 * symptom of that inability.
480 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
481 "%s: No DLPI device found", p->opt.source);
484 status = PCAP_ERROR_PERM_DENIED;
485 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s: %s",
486 dname2, pcap_strerror(errno));
490 /* XXX Assume unit zero */
496 ** Attach if "style 2" provider
498 if (dlinforeq(p->fd, p->errbuf) < 0 ||
499 dlinfoack(p->fd, (char *)buf, p->errbuf) < 0)
501 infop = &((union DL_primitives *)buf)->info_ack;
503 if (infop->dl_mac_type == DL_IPATM)
506 if (infop->dl_provider_style == DL_STYLE2) {
507 status = dl_doattach(p->fd, ppa, p->errbuf);
511 if (p->send_fd >= 0) {
512 if (dl_doattach(p->send_fd, ppa, p->errbuf) < 0)
520 * This device exists, but we don't support monitor mode
521 * any platforms that support DLPI.
523 status = PCAP_ERROR_RFMON_NOTSUP;
527 #ifdef HAVE_DLPI_PASSIVE
529 * Enable Passive mode to be able to capture on aggregated link.
530 * Not supported in all Solaris versions.
532 dlpassive(p->fd, p->errbuf);
535 ** Bind (defer if using HP-UX 9 or HP-UX 10.20 or later, totally
536 ** skip if using SINIX)
538 #if !defined(HAVE_HPUX9) && !defined(HAVE_HPUX10_20_OR_LATER) && !defined(sinix)
542 ** According to IBM's AIX Support Line, the dl_sap value
543 ** should not be less than 0x600 (1536) for standard Ethernet.
544 ** However, we seem to get DL_BADADDR - "DLSAP addr in improper
545 ** format or invalid" - errors if we use 1537 on the "tr0"
546 ** device, which, given that its name starts with "tr" and that
547 ** it's IBM, probably means a Token Ring device. (Perhaps we
548 ** need to use 1537 on "/dev/dlpi/en" because that device is for
549 ** D/I/X Ethernet, the "SAP" is actually an Ethernet type, and
550 ** it rejects invalid Ethernet types.)
552 ** So if 1537 fails, we try 2, as Hyung Sik Yoon of IBM Korea
553 ** says that works on Token Ring (he says that 0 does *not*
554 ** work; perhaps that's considered an invalid LLC SAP value - I
555 ** assume the SAP value in a DLPI bind is an LLC SAP for network
556 ** types that use 802.2 LLC).
558 if ((dlbindreq(p->fd, 1537, p->errbuf) < 0 &&
559 dlbindreq(p->fd, 2, p->errbuf) < 0) ||
560 dlbindack(p->fd, (char *)buf, p->errbuf, NULL) < 0)
562 #elif defined(DL_HP_RAWDLS)
564 ** HP-UX 10.0x and 10.1x.
566 if (dl_dohpuxbind(p->fd, p->errbuf) < 0)
568 if (p->send_fd >= 0) {
570 ** XXX - if this fails, just close send_fd and
571 ** set it to -1, so that you can't send but can
574 if (dl_dohpuxbind(p->send_fd, p->errbuf) < 0)
577 #else /* neither AIX nor HP-UX */
579 ** Not Sinix, and neither AIX nor HP-UX - Solaris, and any other
582 if (dlbindreq(p->fd, 0, p->errbuf) < 0 ||
583 dlbindack(p->fd, (char *)buf, p->errbuf, NULL) < 0)
585 #endif /* AIX vs. HP-UX vs. other */
586 #endif /* !HP-UX 9 and !HP-UX 10.20 or later and !SINIX */
591 ** Have to turn on some special ATM promiscuous mode
593 ** Do *NOT* turn regular promiscuous mode on; it doesn't
594 ** help, and may break things.
596 if (strioctl(p->fd, A_PROMISCON_REQ, 0, NULL) < 0) {
597 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
598 "A_PROMISCON_REQ: %s", pcap_strerror(errno));
603 if (p->opt.promisc) {
605 ** Enable promiscuous (not necessary on send FD)
607 if (dlpromisconreq(p->fd, DL_PROMISC_PHYS, p->errbuf) < 0 ||
608 dlokack(p->fd, "promisc_phys", (char *)buf, p->errbuf) < 0)
612 ** Try to enable multicast (you would have thought
613 ** promiscuous would be sufficient). (Skip if using
614 ** HP-UX or SINIX) (Not necessary on send FD)
616 #if !defined(__hpux) && !defined(sinix)
617 if (dlpromisconreq(p->fd, DL_PROMISC_MULTI, p->errbuf) < 0 ||
618 dlokack(p->fd, "promisc_multi", (char *)buf, p->errbuf) < 0)
619 status = PCAP_WARNING;
623 ** Try to enable SAP promiscuity (when not in promiscuous mode
624 ** when using HP-UX, when not doing SunATM on Solaris, and never
625 ** under SINIX) (Not necessary on send FD)
635 (dlpromisconreq(p->fd, DL_PROMISC_SAP, p->errbuf) < 0 ||
636 dlokack(p->fd, "promisc_sap", (char *)buf, p->errbuf) < 0)) {
637 /* Not fatal if promisc since the DL_PROMISC_PHYS worked */
639 status = PCAP_WARNING;
646 ** HP-UX 9, and HP-UX 10.20 or later, must bind after setting
647 ** promiscuous options.
649 #if defined(HAVE_HPUX9) || defined(HAVE_HPUX10_20_OR_LATER)
650 if (dl_dohpuxbind(p->fd, p->errbuf) < 0)
653 ** We don't set promiscuous mode on the send FD, but we'll defer
654 ** binding it anyway, just to keep the HP-UX 9/10.20 or later
657 if (p->send_fd >= 0) {
659 ** XXX - if this fails, just close send_fd and
660 ** set it to -1, so that you can't send but can
663 if (dl_dohpuxbind(p->send_fd, p->errbuf) < 0)
669 ** Determine link type
670 ** XXX - get SAP length and address length as well, for use
671 ** when sending packets.
673 if (dlinforeq(p->fd, p->errbuf) < 0 ||
674 dlinfoack(p->fd, (char *)buf, p->errbuf) < 0)
677 infop = &((union DL_primitives *)buf)->info_ack;
678 if (pcap_process_mactype(p, infop->dl_mac_type) != 0)
683 ** This is a non standard SunOS hack to get the full raw link-layer
686 if (strioctl(p->fd, DLIOCRAW, 0, NULL) < 0) {
687 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "DLIOCRAW: %s",
688 pcap_strerror(errno));
696 ** There is a bug in bufmod(7). When dealing with messages of
697 ** less than snaplen size it strips data from the beginning not
700 ** This bug is fixed in 5.3.2. Also, there is a patch available.
701 ** Ask for bugid 1149065.
704 release = get_release(&osmajor, &osminor, &osmicro);
705 if (osmajor == 5 && (osminor <= 2 || (osminor == 3 && osmicro < 2)) &&
706 getenv("BUFMOD_FIXED") == NULL) {
707 snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
708 "WARNING: bufmod is broken in SunOS %s; ignoring snaplen.",
711 status = PCAP_WARNING;
715 #ifdef HAVE_SYS_BUFMOD_H
716 /* Push and configure bufmod. */
717 if (pcap_conf_bufmod(p, ss, p->md.timeout) != 0)
722 ** As the last operation flush the read side.
724 if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) {
725 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s",
726 pcap_strerror(errno));
730 /* Allocate data buffer. */
731 if (pcap_alloc_databuf(p) != 0)
734 /* Success - but perhaps with a warning */
739 * "p->fd" is an FD for a STREAMS device, so "select()" and
740 * "poll()" should work on it.
742 p->selectable_fd = p->fd;
744 p->read_op = pcap_read_dlpi;
745 p->inject_op = pcap_inject_dlpi;
746 p->setfilter_op = install_bpf_program; /* no kernel filtering */
747 p->setdirection_op = NULL; /* Not implemented.*/
748 p->set_datalink_op = NULL; /* can't change data link type */
749 p->getnonblock_op = pcap_getnonblock_fd;
750 p->setnonblock_op = pcap_setnonblock_fd;
751 p->stats_op = pcap_stats_dlpi;
752 p->cleanup_op = pcap_cleanup_dlpi;
756 pcap_cleanup_dlpi(p);
761 * Split a device name into a device type name and a unit number;
762 * return the a pointer to the beginning of the unit number, which
763 * is the end of the device type name, and set "*unitp" to the unit
766 * Returns NULL on error, and fills "ebuf" with an error message.
769 split_dname(char *device, int *unitp, char *ebuf)
776 * Look for a number at the end of the device name string.
778 cp = device + strlen(device) - 1;
779 if (*cp < '0' || *cp > '9') {
780 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s missing unit number",
785 /* Digits at end of string are unit number */
786 while (cp-1 >= device && *(cp-1) >= '0' && *(cp-1) <= '9')
790 unit = strtol(cp, &eos, 10);
792 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s bad unit number", device);
795 if (errno == ERANGE || unit > INT_MAX) {
796 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s unit number too large",
801 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s unit number is negative",
810 dl_doattach(int fd, int ppa, char *ebuf)
812 bpf_u_int32 buf[MAXDLBUF];
815 if (dlattachreq(fd, ppa, ebuf) < 0)
817 err = dlokack(fd, "attach", (char *)buf, ebuf);
825 dl_dohpuxbind(int fd, char *ebuf)
829 bpf_u_int32 buf[MAXDLBUF];
832 * XXX - we start at 22 because we used to use only 22, but
833 * that was just because that was the value used in some
834 * sample code from HP. With what value *should* we start?
835 * Does it matter, given that we're enabling SAP promiscuity
840 if (dlbindreq(fd, hpsap, ebuf) < 0)
842 if (dlbindack(fd, (char *)buf, ebuf, &uerror) >= 0)
845 * For any error other than a UNIX EBUSY, give up.
847 if (uerror != EBUSY) {
849 * dlbindack() has already filled in ebuf for
856 * For EBUSY, try the next SAP value; that means that
857 * somebody else is using that SAP. Clear ebuf so
858 * that application doesn't report the "Device busy"
859 * error as a warning.
865 "All SAPs from 22 through 100 are in use",
875 pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
881 char pad[516]; /* XXX - must be at least 513; is 516
888 * We may have to do special magic to get ATM devices.
890 if ((fd = open("/dev/ba", O_RDWR)) < 0) {
892 * We couldn't open the "ba" device.
893 * For now, just give up; perhaps we should
894 * return an error if the problem is neither
895 * a "that device doesn't exist" error (ENOENT,
896 * ENXIO, etc.) or a "you're not allowed to do
897 * that" error (EPERM, EACCES).
902 if (strioctl(fd, A_GET_UNITS, sizeof(buf), (char *)&buf) < 0) {
903 snprintf(errbuf, PCAP_ERRBUF_SIZE, "A_GET_UNITS: %s",
904 pcap_strerror(errno));
907 for (i = 0; i < buf.nunits; i++) {
908 snprintf(baname, sizeof baname, "ba%u", i);
909 if (pcap_add_if(alldevsp, baname, 0, NULL, errbuf) < 0)
918 send_request(int fd, char *ptr, int len, char *what, char *ebuf)
928 if (putmsg(fd, &ctl, (struct strbuf *) NULL, flags) < 0) {
929 snprintf(ebuf, PCAP_ERRBUF_SIZE,
930 "send_request: putmsg \"%s\": %s",
931 what, pcap_strerror(errno));
938 recv_ack(int fd, int size, const char *what, char *bufp, char *ebuf, int *uerror)
940 union DL_primitives *dlp;
945 * Clear out "*uerror", so it's only set for DL_ERROR_ACK/DL_SYSERR,
946 * making that the only place where EBUSY is treated specially.
951 ctl.maxlen = MAXDLBUF;
956 if (getmsg(fd, &ctl, (struct strbuf*)NULL, &flags) < 0) {
957 snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s getmsg: %s",
958 what, pcap_strerror(errno));
962 dlp = (union DL_primitives *) ctl.buf;
963 switch (dlp->dl_primitive) {
975 switch (dlp->error_ack.dl_errno) {
979 *uerror = dlp->error_ack.dl_unix_errno;
980 snprintf(ebuf, PCAP_ERRBUF_SIZE,
981 "recv_ack: %s: UNIX error - %s",
982 what, pcap_strerror(dlp->error_ack.dl_unix_errno));
983 if (dlp->error_ack.dl_unix_errno == EACCES)
984 return (PCAP_ERROR_PERM_DENIED);
988 snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s: %s",
989 what, dlstrerror(dlp->error_ack.dl_errno));
990 if (dlp->error_ack.dl_errno == DL_BADPPA)
991 return (PCAP_ERROR_NO_SUCH_DEVICE);
992 else if (dlp->error_ack.dl_errno == DL_ACCESS)
993 return (PCAP_ERROR_PERM_DENIED);
999 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1000 "recv_ack: %s: Unexpected primitive ack %s",
1001 what, dlprim(dlp->dl_primitive));
1002 return (PCAP_ERROR);
1005 if (ctl.len < size) {
1006 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1007 "recv_ack: %s: Ack too small (%d < %d)",
1008 what, ctl.len, size);
1009 return (PCAP_ERROR);
1015 dlstrerror(bpf_u_int32 dl_errno)
1017 static char errstring[6+2+8+1];
1022 return ("Improper permissions for request");
1025 return ("DLSAP addr in improper format or invalid");
1028 return ("Seq number not from outstand DL_CONN_IND");
1031 return ("User data exceeded provider limit");
1034 #ifdef HAVE_DEV_DLPI
1036 * With a single "/dev/dlpi" device used for all
1037 * DLPI providers, PPAs have nothing to do with
1040 return ("Specified PPA was invalid");
1043 * We have separate devices for separate devices;
1044 * the PPA is just the unit number.
1046 return ("Specified PPA (device unit) was invalid");
1050 return ("Primitive received not known by provider");
1052 case DL_BADQOSPARAM:
1053 return ("QOS parameters contained invalid values");
1056 return ("QOS structure type is unknown/unsupported");
1059 return ("Bad LSAP selector");
1062 return ("Token used not an active stream");
1065 return ("Attempted second bind with dl_max_conind");
1068 return ("Physical link initialization failed");
1071 return ("Provider couldn't allocate alternate address");
1074 return ("Physical link not initialized");
1077 return ("Primitive issued in improper state");
1080 return ("UNIX system error occurred");
1082 case DL_UNSUPPORTED:
1083 return ("Requested service not supplied by provider");
1085 case DL_UNDELIVERABLE:
1086 return ("Previous data unit could not be delivered");
1088 case DL_NOTSUPPORTED:
1089 return ("Primitive is known but not supported");
1092 return ("Limit exceeded");
1095 return ("Promiscuous mode not enabled");
1098 return ("Other streams for PPA in post-attached");
1101 return ("Automatic handling XID&TEST not supported");
1104 return ("Automatic handling of XID not supported");
1107 return ("Automatic handling of TEST not supported");
1110 return ("Automatic handling of XID response");
1113 return ("Automatic handling of TEST response");
1116 return ("Pending outstanding connect indications");
1119 sprintf(errstring, "Error %02x", dl_errno);
1125 dlprim(bpf_u_int32 prim)
1127 static char primbuf[80];
1132 return ("DL_INFO_REQ");
1135 return ("DL_INFO_ACK");
1138 return ("DL_ATTACH_REQ");
1141 return ("DL_DETACH_REQ");
1144 return ("DL_BIND_REQ");
1147 return ("DL_BIND_ACK");
1150 return ("DL_UNBIND_REQ");
1153 return ("DL_OK_ACK");
1156 return ("DL_ERROR_ACK");
1158 case DL_SUBS_BIND_REQ:
1159 return ("DL_SUBS_BIND_REQ");
1161 case DL_SUBS_BIND_ACK:
1162 return ("DL_SUBS_BIND_ACK");
1164 case DL_UNITDATA_REQ:
1165 return ("DL_UNITDATA_REQ");
1167 case DL_UNITDATA_IND:
1168 return ("DL_UNITDATA_IND");
1170 case DL_UDERROR_IND:
1171 return ("DL_UDERROR_IND");
1174 return ("DL_UDQOS_REQ");
1176 case DL_CONNECT_REQ:
1177 return ("DL_CONNECT_REQ");
1179 case DL_CONNECT_IND:
1180 return ("DL_CONNECT_IND");
1182 case DL_CONNECT_RES:
1183 return ("DL_CONNECT_RES");
1185 case DL_CONNECT_CON:
1186 return ("DL_CONNECT_CON");
1189 return ("DL_TOKEN_REQ");
1192 return ("DL_TOKEN_ACK");
1194 case DL_DISCONNECT_REQ:
1195 return ("DL_DISCONNECT_REQ");
1197 case DL_DISCONNECT_IND:
1198 return ("DL_DISCONNECT_IND");
1201 return ("DL_RESET_REQ");
1204 return ("DL_RESET_IND");
1207 return ("DL_RESET_RES");
1210 return ("DL_RESET_CON");
1213 (void) sprintf(primbuf, "unknown primitive 0x%x", prim);
1219 dlattachreq(int fd, bpf_u_int32 ppa, char *ebuf)
1221 dl_attach_req_t req;
1223 req.dl_primitive = DL_ATTACH_REQ;
1226 return (send_request(fd, (char *)&req, sizeof(req), "attach", ebuf));
1230 dlbindreq(int fd, bpf_u_int32 sap, char *ebuf)
1235 memset((char *)&req, 0, sizeof(req));
1236 req.dl_primitive = DL_BIND_REQ;
1237 /* XXX - what if neither of these are defined? */
1238 #if defined(DL_HP_RAWDLS)
1239 req.dl_max_conind = 1; /* XXX magic number */
1240 req.dl_service_mode = DL_HP_RAWDLS;
1241 #elif defined(DL_CLDLS)
1242 req.dl_service_mode = DL_CLDLS;
1246 return (send_request(fd, (char *)&req, sizeof(req), "bind", ebuf));
1250 dlbindack(int fd, char *bufp, char *ebuf, int *uerror)
1253 return (recv_ack(fd, DL_BIND_ACK_SIZE, "bind", bufp, ebuf, uerror));
1257 dlpromisconreq(int fd, bpf_u_int32 level, char *ebuf)
1259 dl_promiscon_req_t req;
1261 req.dl_primitive = DL_PROMISCON_REQ;
1262 req.dl_level = level;
1264 return (send_request(fd, (char *)&req, sizeof(req), "promiscon", ebuf));
1268 dlokack(int fd, const char *what, char *bufp, char *ebuf)
1271 return (recv_ack(fd, DL_OK_ACK_SIZE, what, bufp, ebuf, NULL));
1276 dlinforeq(int fd, char *ebuf)
1280 req.dl_primitive = DL_INFO_REQ;
1282 return (send_request(fd, (char *)&req, sizeof(req), "info", ebuf));
1286 dlinfoack(int fd, char *bufp, char *ebuf)
1289 return (recv_ack(fd, DL_INFO_ACK_SIZE, "info", bufp, ebuf, NULL));
1292 #ifdef HAVE_DLPI_PASSIVE
1294 * Enable DLPI passive mode. We do not care if this request fails, as this
1295 * indicates the underlying DLPI device does not support link aggregation.
1298 dlpassive(int fd, char *ebuf)
1300 dl_passive_req_t req;
1301 bpf_u_int32 buf[MAXDLBUF];
1303 req.dl_primitive = DL_PASSIVE_REQ;
1305 if (send_request(fd, (char *)&req, sizeof(req), "dlpassive", ebuf) == 0)
1306 (void) dlokack(fd, "dlpassive", (char *)buf, ebuf);
1312 * There's an ack *if* there's an error.
1315 dlrawdatareq(int fd, const u_char *datap, int datalen)
1317 struct strbuf ctl, data;
1318 long buf[MAXDLBUF]; /* XXX - char? */
1319 union DL_primitives *dlp;
1322 dlp = (union DL_primitives*) buf;
1324 dlp->dl_primitive = DL_HP_RAWDATA_REQ;
1325 dlen = DL_HP_RAWDATA_REQ_SIZE;
1328 * HP's documentation doesn't appear to show us supplying any
1329 * address pointed to by the control part of the message.
1330 * I think that's what raw mode means - you just send the raw
1331 * packet, you don't specify where to send it to, as that's
1332 * implied by the destination address.
1336 ctl.buf = (void *)buf;
1340 data.buf = (void *)datap;
1342 return (putmsg(fd, &ctl, &data, 0));
1344 #endif /* DL_HP_RAWDLS */
1346 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H)
1348 get_release(bpf_u_int32 *majorp, bpf_u_int32 *minorp, bpf_u_int32 *microp)
1351 static char buf[32];
1356 if (sysinfo(SI_RELEASE, buf, sizeof(buf)) < 0)
1359 if (!isdigit((unsigned char)*cp))
1361 *majorp = strtol(cp, &cp, 10);
1364 *minorp = strtol(cp, &cp, 10);
1367 *microp = strtol(cp, &cp, 10);
1372 #ifdef DL_HP_PPA_REQ
1374 * Under HP-UX 10 and HP-UX 11, we can ask for the ppa
1379 * Determine ppa number that specifies ifname.
1381 * If the "dl_hp_ppa_info_t" doesn't have a "dl_module_id_1" member,
1382 * the code that's used here is the old code for HP-UX 10.x.
1384 * However, HP-UX 10.20, at least, appears to have such a member
1385 * in its "dl_hp_ppa_info_t" structure, so the new code is used.
1386 * The new code didn't work on an old 10.20 system on which Rick
1387 * Jones of HP tried it, but with later patches installed, it
1388 * worked - it appears that the older system had those members but
1389 * didn't put anything in them, so, if the search by name fails, we
1390 * do the old search.
1392 * Rick suggests that making sure your system is "up on the latest
1393 * lancommon/DLPI/driver patches" is probably a good idea; it'd fix
1394 * that problem, as well as allowing libpcap to see packets sent
1395 * from the system on which the libpcap application is being run.
1396 * (On 10.20, in addition to getting the latest patches, you need
1397 * to turn the kernel "lanc_outbound_promisc_flag" flag on with ADB;
1398 * a posting to "comp.sys.hp.hpux" at
1400 * http://www.deja.com/[ST_rn=ps]/getdoc.xp?AN=558092266
1402 * says that, to see the machine's outgoing traffic, you'd need to
1403 * apply the right patches to your system, and also set that variable
1406 echo 'lanc_outbound_promisc_flag/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem
1408 * which could be put in, for example, "/sbin/init.d/lan".
1410 * Setting the variable is not necessary on HP-UX 11.x.
1413 get_dlpi_ppa(register int fd, register const char *device, register int unit,
1414 register char *ebuf)
1416 register dl_hp_ppa_ack_t *ap;
1417 register dl_hp_ppa_info_t *ipstart, *ip;
1420 register u_long majdev;
1421 struct stat statbuf;
1422 dl_hp_ppa_req_t req;
1425 dl_hp_ppa_ack_t *dlp;
1430 memset((char *)&req, 0, sizeof(req));
1431 req.dl_primitive = DL_HP_PPA_REQ;
1433 memset((char *)buf, 0, sizeof(buf));
1434 if (send_request(fd, (char *)&req, sizeof(req), "hpppa", ebuf) < 0)
1435 return (PCAP_ERROR);
1437 ctl.maxlen = DL_HP_PPA_ACK_SIZE;
1439 ctl.buf = (char *)buf;
1443 * DLPI may return a big chunk of data for a DL_HP_PPA_REQ. The normal
1444 * recv_ack will fail because it set the maxlen to MAXDLBUF (8192)
1445 * which is NOT big enough for a DL_HP_PPA_REQ.
1447 * This causes libpcap applications to fail on a system with HP-APA
1450 * To figure out how big the returned data is, we first call getmsg
1451 * to get the small head and peek at the head to get the actual data
1452 * length, and then issue another getmsg to get the actual PPA data.
1454 /* get the head first */
1455 if (getmsg(fd, &ctl, (struct strbuf *)NULL, &flags) < 0) {
1456 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1457 "get_dlpi_ppa: hpppa getmsg: %s", pcap_strerror(errno));
1458 return (PCAP_ERROR);
1461 dlp = (dl_hp_ppa_ack_t *)ctl.buf;
1462 if (dlp->dl_primitive != DL_HP_PPA_ACK) {
1463 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1464 "get_dlpi_ppa: hpppa unexpected primitive ack 0x%x",
1465 (bpf_u_int32)dlp->dl_primitive);
1466 return (PCAP_ERROR);
1469 if (ctl.len < DL_HP_PPA_ACK_SIZE) {
1470 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1471 "get_dlpi_ppa: hpppa ack too small (%d < %lu)",
1472 ctl.len, (unsigned long)DL_HP_PPA_ACK_SIZE);
1473 return (PCAP_ERROR);
1476 /* allocate buffer */
1477 if ((ppa_data_buf = (char *)malloc(dlp->dl_length)) == NULL) {
1478 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1479 "get_dlpi_ppa: hpppa malloc: %s", pcap_strerror(errno));
1480 return (PCAP_ERROR);
1482 ctl.maxlen = dlp->dl_length;
1484 ctl.buf = (char *)ppa_data_buf;
1486 if (getmsg(fd, &ctl, (struct strbuf *)NULL, &flags) < 0) {
1487 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1488 "get_dlpi_ppa: hpppa getmsg: %s", pcap_strerror(errno));
1490 return (PCAP_ERROR);
1492 if (ctl.len < dlp->dl_length) {
1493 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1494 "get_dlpi_ppa: hpppa ack too small (%d < %d)",
1495 ctl.len, dlp->dl_length);
1497 return (PCAP_ERROR);
1500 ap = (dl_hp_ppa_ack_t *)buf;
1501 ipstart = (dl_hp_ppa_info_t *)ppa_data_buf;
1504 #ifdef HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1
1506 * The "dl_hp_ppa_info_t" structure has a "dl_module_id_1"
1507 * member that should, in theory, contain the part of the
1508 * name for the device that comes before the unit number,
1509 * and should also have a "dl_module_id_2" member that may
1510 * contain an alternate name (e.g., I think Ethernet devices
1511 * have both "lan", for "lanN", and "snap", for "snapN", with
1512 * the former being for Ethernet packets and the latter being
1513 * for 802.3/802.2 packets).
1515 * Search for the device that has the specified name and
1518 for (i = 0; i < ap->dl_count; i++) {
1519 if ((strcmp((const char *)ip->dl_module_id_1, device) == 0 ||
1520 strcmp((const char *)ip->dl_module_id_2, device) == 0) &&
1521 ip->dl_instance_num == unit)
1524 ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset);
1528 * We don't have that member, so the search is impossible; make it
1529 * look as if the search failed.
1534 if (i == ap->dl_count) {
1536 * Well, we didn't, or can't, find the device by name.
1538 * HP-UX 10.20, whilst it has "dl_module_id_1" and
1539 * "dl_module_id_2" fields in the "dl_hp_ppa_info_t",
1540 * doesn't seem to fill them in unless the system is
1541 * at a reasonably up-to-date patch level.
1543 * Older HP-UX 10.x systems might not have those fields
1546 * Therefore, we'll search for the entry with the major
1547 * device number of a device with the name "/dev/<dev><unit>",
1548 * if such a device exists, as the old code did.
1550 snprintf(dname, sizeof(dname), "/dev/%s%d", device, unit);
1551 if (stat(dname, &statbuf) < 0) {
1552 snprintf(ebuf, PCAP_ERRBUF_SIZE, "stat: %s: %s",
1553 dname, pcap_strerror(errno));
1554 return (PCAP_ERROR);
1556 majdev = major(statbuf.st_rdev);
1560 for (i = 0; i < ap->dl_count; i++) {
1561 if (ip->dl_mjr_num == majdev &&
1562 ip->dl_instance_num == unit)
1565 ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset);
1568 if (i == ap->dl_count) {
1569 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1570 "can't find /dev/dlpi PPA for %s%d", device, unit);
1571 return (PCAP_ERROR_NO_SUCH_DEVICE);
1573 if (ip->dl_hdw_state == HDW_DEAD) {
1574 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1575 "%s%d: hardware state: DOWN\n", device, unit);
1577 return (PCAP_ERROR);
1587 * Under HP-UX 9, there is no good way to determine the ppa.
1588 * So punt and read it from /dev/kmem.
1590 static struct nlist nl[] = {
1596 static char path_vmunix[] = "/hp-ux";
1598 /* Determine ppa number that specifies ifname */
1600 get_dlpi_ppa(register int fd, register const char *ifname, register int unit,
1601 register char *ebuf)
1603 register const char *cp;
1607 char if_name[sizeof(ifnet.if_name) + 1];
1609 cp = strrchr(ifname, '/');
1612 if (nlist(path_vmunix, &nl) < 0) {
1613 snprintf(ebuf, PCAP_ERRBUF_SIZE, "nlist %s failed",
1617 if (nl[NL_IFNET].n_value == 0) {
1618 snprintf(ebuf, PCAP_ERRBUF_SIZE,
1619 "could't find %s kernel symbol",
1620 nl[NL_IFNET].n_name);
1623 kd = open("/dev/kmem", O_RDONLY);
1625 snprintf(ebuf, PCAP_ERRBUF_SIZE, "kmem open: %s",
1626 pcap_strerror(errno));
1629 if (dlpi_kread(kd, nl[NL_IFNET].n_value,
1630 &addr, sizeof(addr), ebuf) < 0) {
1634 for (; addr != NULL; addr = ifnet.if_next) {
1635 if (dlpi_kread(kd, (off_t)addr,
1636 &ifnet, sizeof(ifnet), ebuf) < 0 ||
1637 dlpi_kread(kd, (off_t)ifnet.if_name,
1638 if_name, sizeof(ifnet.if_name), ebuf) < 0) {
1642 if_name[sizeof(ifnet.if_name)] = '\0';
1643 if (strcmp(if_name, ifname) == 0 && ifnet.if_unit == unit)
1644 return (ifnet.if_index);
1647 snprintf(ebuf, PCAP_ERRBUF_SIZE, "Can't find %s", ifname);
1652 dlpi_kread(register int fd, register off_t addr,
1653 register void *buf, register u_int len, register char *ebuf)
1657 if (lseek(fd, addr, SEEK_SET) < 0) {
1658 snprintf(ebuf, PCAP_ERRBUF_SIZE, "lseek: %s",
1659 pcap_strerror(errno));
1662 cc = read(fd, buf, len);
1664 snprintf(ebuf, PCAP_ERRBUF_SIZE, "read: %s",
1665 pcap_strerror(errno));
1667 } else if (cc != len) {
1668 snprintf(ebuf, PCAP_ERRBUF_SIZE, "short read (%d != %d)", cc,
1677 pcap_create(const char *device, char *ebuf)
1681 p = pcap_create_common(device, ebuf);
1685 p->send_fd = -1; /* it hasn't been opened yet */
1687 p->activate_op = pcap_activate_dlpi;