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 Sagun Shakya (sagun.shakya@sun.com)
24 * Packet capture routines for DLPI using libdlpi under SunOS 5.11.
28 static const char rcsid[] _U_ =
29 "@(#) $Header: /tcpdump/master/libpcap/pcap-libdlpi.c,v 1.1.2.6 2008-04-14 20:41:52 guy Exp $ (LBL)";
36 #include <sys/types.h>
38 #include <sys/bufmod.h>
39 #include <sys/stream.h>
52 static int pcap_read_libdlpi(pcap_t *, int, pcap_handler, u_char *);
53 static int pcap_inject_libdlpi(pcap_t *, const void *, size_t);
54 static void pcap_close_libdlpi(pcap_t *);
55 static void pcap_libdlpi_err(const char *, const char *, int, char *);
58 * list_interfaces() will list all the network links that are
59 * available on a system.
61 static boolean_t list_interfaces(const char *, void *);
63 typedef struct linknamelist {
64 char linkname[DLPI_LINKNAME_MAX];
65 struct linknamelist *lnl_next;
68 typedef struct linkwalk {
69 linknamelist_t *lw_list;
74 * The caller of this function should free the memory allocated
75 * for each linknamelist_t "entry" allocated.
78 list_interfaces(const char *linkname, void *arg)
80 linkwalk_t *lwp = arg;
81 linknamelist_t *entry;
83 if ((entry = calloc(1, sizeof(linknamelist_t))) == NULL) {
87 (void) strlcpy(entry->linkname, linkname, DLPI_LINKNAME_MAX);
89 if (lwp->lw_list == NULL) {
92 entry->lnl_next = lwp->lw_list;
100 pcap_activate_libdlpi(pcap_t *p)
105 int err = PCAP_ERROR;
108 * Enable Solaris raw and passive DLPI extensions;
109 * dlpi_open() will not fail if the underlying link does not support
110 * passive mode. See dlpi(7P) for details.
112 retv = dlpi_open(p->opt.source, &dh, DLPI_RAW|DLPI_PASSIVE);
113 if (retv != DLPI_SUCCESS) {
114 if (retv == DLPI_ELINKNAMEINVAL || retv == DLPI_ENOLINK)
115 err = PCAP_ERROR_NO_SUCH_DEVICE;
116 else if (retv == DLPI_SYSERR && errno == EACCES)
117 err = PCAP_ERROR_PERM_DENIED;
118 pcap_libdlpi_err(p->opt.source, "dlpi_open", retv,
126 * This device exists, but we don't support monitor mode
127 * any platforms that support DLPI.
129 err = PCAP_ERROR_RFMON_NOTSUP;
133 /* Bind with DLPI_ANY_SAP. */
134 if ((retv = dlpi_bind(p->dlpi_hd, DLPI_ANY_SAP, 0)) != DLPI_SUCCESS) {
135 pcap_libdlpi_err(p->opt.source, "dlpi_bind", retv, p->errbuf);
139 /* Enable promiscuous mode. */
140 if (p->opt.promisc) {
141 retv = dlpi_promiscon(p->dlpi_hd, DL_PROMISC_PHYS);
142 if (retv != DLPI_SUCCESS) {
143 pcap_libdlpi_err(p->opt.source,
144 "dlpi_promisc(PHYSICAL)", retv, p->errbuf);
148 /* Try to enable multicast. */
149 retv = dlpi_promiscon(p->dlpi_hd, DL_PROMISC_MULTI);
150 if (retv != DLPI_SUCCESS) {
151 pcap_libdlpi_err(p->opt.source, "dlpi_promisc(MULTI)",
157 /* Try to enable SAP promiscuity. */
158 if ((retv = dlpi_promiscon(p->dlpi_hd, DL_PROMISC_SAP)) != DLPI_SUCCESS) {
160 pcap_libdlpi_err(p->opt.source, "dlpi_promisc(SAP)",
165 /* Not fatal, since the DL_PROMISC_PHYS mode worked. */
166 fprintf(stderr, "WARNING: dlpi_promisc(SAP) failed on"
167 " %s:(%s)\n", p->opt.source, dlpi_strerror(retv));
170 /* Determine link type. */
171 if ((retv = dlpi_info(p->dlpi_hd, &dlinfo, 0)) != DLPI_SUCCESS) {
172 pcap_libdlpi_err(p->opt.source, "dlpi_info", retv, p->errbuf);
176 if (pcap_process_mactype(p, dlinfo.di_mactype) != 0)
179 p->fd = dlpi_fd(p->dlpi_hd);
181 /* Push and configure bufmod. */
182 if (pcap_conf_bufmod(p, snaplen, p->md.timeout) != 0)
186 * Flush the read side.
188 if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) {
189 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s",
190 pcap_strerror(errno));
194 /* Allocate data buffer. */
195 if (pcap_alloc_databuf(p) != 0)
199 * "p->fd" is a FD for a STREAMS device, so "select()" and
200 * "poll()" should work on it.
202 p->selectable_fd = p->fd;
204 p->read_op = pcap_read_libdlpi;
205 p->inject_op = pcap_inject_libdlpi;
206 p->setfilter_op = install_bpf_program; /* No kernel filtering */
207 p->setdirection_op = NULL; /* Not implemented */
208 p->set_datalink_op = NULL; /* Can't change data link type */
209 p->getnonblock_op = pcap_getnonblock_fd;
210 p->setnonblock_op = pcap_setnonblock_fd;
211 p->stats_op = pcap_stats_dlpi;
212 p->cleanup_op = pcap_cleanup_libdlpi;
216 pcap_cleanup_libdlpi(p);
221 * In Solaris, the "standard" mechanism" i.e SIOCGLIFCONF will only find
222 * network links that are plumbed and are up. dlpi_walk(3DLPI) will find
223 * additional network links present in the system.
226 pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
230 linknamelist_t *entry, *next;
231 linkwalk_t lw = {NULL, 0};
234 /* dlpi_walk() for loopback will be added here. */
236 dlpi_walk(list_interfaces, &lw, 0);
238 if (lw.lw_err != 0) {
239 snprintf(errbuf, PCAP_ERRBUF_SIZE,
240 "dlpi_walk: %s", pcap_strerror(lw.lw_err));
245 /* Add linkname if it does not exist on the list. */
246 for (entry = lw.lw_list; entry != NULL; entry = entry->lnl_next) {
247 if (pcap_add_if(alldevsp, entry->linkname, 0, NULL, errbuf) < 0)
252 for (entry = lw.lw_list; entry != NULL; entry = next) {
253 next = entry->lnl_next;
262 * Read data received on DLPI handle. Returns -2 if told to terminate, else
263 * returns the number of packets read.
266 pcap_read_libdlpi(pcap_t *p, int count, pcap_handler callback, u_char *user)
279 /* Has "pcap_breakloop()" been called? */
282 * Yes - clear the flag that indicates that it has,
283 * and return -2 to indicate that we were told to
284 * break out of the loop.
291 bufp = p->buffer + p->offset;
293 retv = dlpi_recv(p->dlpi_hd, NULL, NULL, bufp,
295 if (retv != DLPI_SUCCESS) {
297 * This is most likely a call to terminate out of the
298 * loop. So, do not return an error message, instead
299 * check if "pcap_breakloop()" has been called above.
301 if (retv == DL_SYSERR && errno == EINTR) {
305 pcap_libdlpi_err(dlpi_linkname(p->dlpi_hd),
306 "dlpi_recv", retv, p->errbuf);
313 return (pcap_process_pkts(p, callback, user, count, bufp, len));
317 pcap_inject_libdlpi(pcap_t *p, const void *buf, size_t size)
321 retv = dlpi_send(p->dlpi_hd, NULL, 0, buf, size, NULL);
322 if (retv != DLPI_SUCCESS) {
323 pcap_libdlpi_err(dlpi_linkname(p->dlpi_hd), "dlpi_send", retv,
328 * dlpi_send(3DLPI) does not provide a way to return the number of
329 * bytes sent on the wire. Based on the fact that DLPI_SUCCESS was
330 * returned we are assuming 'size' bytes were sent.
339 pcap_cleanup_libdlpi(pcap_t *p)
341 if (p->dlpi_hd != NULL) {
342 dlpi_close(p->dlpi_hd);
346 pcap_cleanup_live_common(p);
350 * Write error message to buffer.
353 pcap_libdlpi_err(const char *linkname, const char *func, int err, char *errbuf)
355 snprintf(errbuf, PCAP_ERRBUF_SIZE, "libpcap: %s failed on %s: %s",
356 func, linkname, dlpi_strerror(err));
360 pcap_create(const char *device, char *ebuf)
364 p = pcap_create_common(device, ebuf);
368 p->activate_op = pcap_activate_libdlpi;