*/
#ifndef lint
static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.4 2000-09-23 08:54:42 guy Exp $";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.15 2002-05-29 10:06:27 guy Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include <sys/time.h>
#include <sys/socket.h>
-struct mbuf;
-struct rtentry;
-#include <net/if.h>
-
#include <netinet/in.h>
-#include <netinet/in_systm.h>
#include <pcap.h>
#include <stdio.h>
+#include <string.h>
#include "interface.h"
#include "addrtoname.h"
static inline void
extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst)
{
- memcpy(fdst, (char *)trp->token_dhost, 6);
- memcpy(fsrc, (char *)trp->token_shost, 6);
+ memcpy(fdst, (const char *)trp->token_dhost, 6);
+ memcpy(fsrc, (const char *)trp->token_shost, 6);
}
/*
* Print the TR MAC header
*/
static inline void
-token_print(register const struct token_header *trp, register u_int length,
+token_hdr_print(register const struct token_header *trp, register u_int length,
register const u_char *fsrc, register const u_char *fdst)
{
- char *srcname, *dstname;
+ const char *srcname, *dstname;
srcname = etheraddr_string(fsrc);
dstname = etheraddr_string(fdst);
printf("%s %s %d: ", srcname, dstname, length);
}
-static char *broadcast_indicator[] = {
+static const char *broadcast_indicator[] = {
"Non-Broadcast", "Non-Broadcast",
"Non-Broadcast", "Non-Broadcast",
"All-routes", "All-routes",
"Single-route", "Single-route"
};
-static char *direction[] = {
+static const char *direction[] = {
"Forward", "Backward"
};
-static char *largest_frame[] = {
+static const char *largest_frame[] = {
"516",
"1500",
"2052",
"??"
};
-/*
- * This is the top level routine of the printer. 'p' is the points
- * to the TR header of the packet, 'tvp' is the timestamp,
- * 'length' is the length of the packet off the wire, and 'caplen'
- * is the number of bytes actually captured.
- */
-void
-token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
+u_int
+token_print(const u_char *p, u_int length, u_int caplen)
{
- u_int caplen = h->caplen;
- u_int length = h->len;
- struct token_header *trp;
+ const struct token_header *trp;
u_short extracted_ethertype;
struct ether_header ehdr;
- u_int route_len = 0, seg;
+ u_int route_len = 0, hdr_len = TOKEN_HDRLEN, seg;
- trp = (struct token_header *)p;
-
- ts_print(&h->ts);
+ trp = (const struct token_header *)p;
if (caplen < TOKEN_HDRLEN) {
printf("[|token-ring]");
- goto out;
+ return hdr_len;
}
/*
* Get the TR addresses into a canonical form
*/
snapend = p + caplen;
/*
- * Actually, the only printer that uses packetp is print-bootp.c,
- * and it assumes that packetp points to an Ethernet header. The
- * right thing to do is to fix print-bootp.c to know which link
- * type is in use when it excavates. XXX
+ * Actually, the only printers that use packetp are print-arp.c
+ * and print-bootp.c, and they assume that packetp points to an
+ * Ethernet header. The right thing to do is to fix them to know
+ * which link type is in use when they excavate. XXX
*/
packetp = (u_char *)&ehdr;
*ESRC(&ehdr) &= 0x7f;
if (eflag)
- token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
+ token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
route_len = RIF_LENGTH(trp);
if (vflag) {
printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
} else {
if (eflag)
- token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
+ token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
}
/* Skip over token ring MAC header and routing information */
- length -= TOKEN_HDRLEN + route_len;
- p += TOKEN_HDRLEN + route_len;
- caplen -= TOKEN_HDRLEN + route_len;
+ hdr_len += route_len;
+ length -= hdr_len;
+ p += hdr_len;
+ caplen -= hdr_len;
/* Frame Control field determines interpretation of packet */
extracted_ethertype = 0;
if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
/* Try to print the LLC-layer header & higher layers */
- if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr))
- == 0) {
+ if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
+ &extracted_ethertype) == 0) {
/* ether_type not known, print raw packet */
if (!eflag)
- token_print(trp, length,
+ token_hdr_print(trp,
+ length + TOKEN_HDRLEN + route_len,
ESRC(&ehdr), EDST(&ehdr));
if (extracted_ethertype) {
printf("(LLC %s) ",
/* Some kinds of TR packet we cannot handle intelligently */
/* XXX - dissect MAC packets if frame type is 0 */
if (!eflag)
- token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
+ token_hdr_print(trp, length + TOKEN_HDRLEN + route_len,
+ ESRC(&ehdr), EDST(&ehdr));
if (!xflag && !qflag)
default_print(p, caplen);
}
- if (xflag)
- default_print(p, caplen);
-out:
+ return (hdr_len);
+}
+
+/*
+ * This is the top level routine of the printer. 'p' is the points
+ * to the TR header of the packet, 'tvp' is the timestamp,
+ * 'length' is the length of the packet off the wire, and 'caplen'
+ * is the number of bytes actually captured.
+ */
+void
+token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
+{
+ u_int caplen = h->caplen;
+ u_int length = h->len;
+ u_int hdr_len;
+
+ ++infodelay;
+ ts_print(&h->ts);
+
+ hdr_len = token_print(p, length, caplen);
+
+ /*
+ * If "-x" was specified, print stuff past the Token Ring header,
+ * if there's anything to print.
+ */
+ if (xflag && caplen > hdr_len)
+ default_print(p + hdr_len, caplen - hdr_len);
+
putchar('\n');
+
+ --infodelay;
+ if (infoprint)
+ info(0);
}
projects / tcpdump / blobdiff