* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-fddi.c,v 1.37 1999-11-21 03:45:35 assar Exp $ (LBL)";
-#endif
-
-#ifdef HAVE_FDDI
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <sys/file.h>
-#include <sys/ioctl.h>
+/* \summary: Fiber Distributed Data Interface (FDDI) printer */
-#if __STDC__
-struct mbuf;
-struct rtentry;
-#endif
-#include <net/if.h>
+#include <config.h>
-#include <netinet/in.h>
-#include <netinet/if_ether.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
+#include "netdissect-stdinc.h"
-#include <ctype.h>
-#include <netdb.h>
-#include <pcap.h>
-#include <stdio.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
+#include "extract.h"
#include "addrtoname.h"
-#include "ethertype.h"
-#include "fddi.h"
+/*
+ * Based on Ultrix if_fddi.h
+ */
+
+struct fddi_header {
+ nd_uint8_t fddi_fc; /* frame control */
+ nd_mac48 fddi_dhost;
+ nd_mac48 fddi_shost;
+};
+
+/*
+ * Length of an FDDI header; note that some compilers may pad
+ * "struct fddi_header" to a multiple of 4 bytes, for example, so
+ * "sizeof (struct fddi_header)" may not give the right
+ * answer.
+ */
+#define FDDI_HDRLEN 13
+
+/* Useful values for fddi_fc (frame control) field */
+
+/*
+ * FDDI Frame Control bits
+ */
+#define FDDIFC_C 0x80 /* Class bit */
+#define FDDIFC_L 0x40 /* Address length bit */
+#define FDDIFC_F 0x30 /* Frame format bits */
+#define FDDIFC_Z 0x0f /* Control bits */
+
+/*
+ * FDDI Frame Control values. (48-bit addressing only).
+ */
+#define FDDIFC_VOID 0x40 /* Void frame */
+#define FDDIFC_NRT 0x80 /* Nonrestricted token */
+#define FDDIFC_RT 0xc0 /* Restricted token */
+#define FDDIFC_SMT_INFO 0x41 /* SMT Info */
+#define FDDIFC_SMT_NSA 0x4F /* SMT Next station adrs */
+#define FDDIFC_MAC_BEACON 0xc2 /* MAC Beacon frame */
+#define FDDIFC_MAC_CLAIM 0xc3 /* MAC Claim frame */
+#define FDDIFC_LLC_ASYNC 0x50 /* Async. LLC frame */
+#define FDDIFC_LLC_SYNC 0xd0 /* Sync. LLC frame */
+#define FDDIFC_IMP_ASYNC 0x60 /* Implementor Async. */
+#define FDDIFC_IMP_SYNC 0xe0 /* Implementor Synch. */
+#define FDDIFC_SMT 0x40 /* SMT frame */
+#define FDDIFC_MAC 0xc0 /* MAC frame */
+
+#define FDDIFC_CLFF 0xF0 /* Class/Length/Format bits */
+#define FDDIFC_ZZZZ 0x0F /* Control bits */
/*
* Some FDDI interfaces use bit-swapped addresses.
*/
-#if defined(ultrix) || defined(__alpha) || defined(__bsdi)
-int fddi_bitswap = 0;
+#if defined(__alpha) || defined(__NetBSD__) || defined(__linux__)
+static int fddi_bitswap = 0;
#else
-int fddi_bitswap = 1;
+static int fddi_bitswap = 1;
#endif
/*
* - vj
*/
-#define FDDI_HDRLEN (sizeof(struct fddi_header))
-
-static u_char fddi_bit_swap[] = {
+static const u_char fddi_bit_swap[] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
/*
* Print FDDI frame-control bits
*/
-static inline void
-print_fddi_fc(u_char fc)
+static void
+print_fddi_fc(netdissect_options *ndo, u_char fc)
{
switch (fc) {
case FDDIFC_VOID: /* Void frame */
- printf("void ");
+ ND_PRINT("void ");
break;
case FDDIFC_NRT: /* Nonrestricted token */
- printf("nrt ");
+ ND_PRINT("nrt ");
break;
case FDDIFC_RT: /* Restricted token */
- printf("rt ");
+ ND_PRINT("rt ");
break;
case FDDIFC_SMT_INFO: /* SMT Info */
- printf("info ");
+ ND_PRINT("info ");
break;
case FDDIFC_SMT_NSA: /* SMT Next station adrs */
- printf("nsa ");
+ ND_PRINT("nsa ");
break;
case FDDIFC_MAC_BEACON: /* MAC Beacon frame */
- printf("beacon ");
+ ND_PRINT("beacon ");
break;
case FDDIFC_MAC_CLAIM: /* MAC Claim frame */
- printf("claim ");
+ ND_PRINT("claim ");
break;
default:
switch (fc & FDDIFC_CLFF) {
case FDDIFC_MAC:
- printf("mac%1x ", fc & FDDIFC_ZZZZ);
+ ND_PRINT("mac%1x ", fc & FDDIFC_ZZZZ);
break;
case FDDIFC_SMT:
- printf("smt%1x ", fc & FDDIFC_ZZZZ);
+ ND_PRINT("smt%1x ", fc & FDDIFC_ZZZZ);
break;
case FDDIFC_LLC_ASYNC:
- printf("async%1x ", fc & FDDIFC_ZZZZ);
+ ND_PRINT("async%1x ", fc & FDDIFC_ZZZZ);
break;
case FDDIFC_LLC_SYNC:
- printf("sync%1x ", fc & FDDIFC_ZZZZ);
+ ND_PRINT("sync%1x ", fc & FDDIFC_ZZZZ);
break;
case FDDIFC_IMP_ASYNC:
- printf("imp_async%1x ", fc & FDDIFC_ZZZZ);
+ ND_PRINT("imp_async%1x ", fc & FDDIFC_ZZZZ);
break;
case FDDIFC_IMP_SYNC:
- printf("imp_sync%1x ", fc & FDDIFC_ZZZZ);
+ ND_PRINT("imp_sync%1x ", fc & FDDIFC_ZZZZ);
break;
default:
- printf("%02x ", fc);
+ ND_PRINT("%02x ", fc);
break;
}
}
}
/* Extract src, dst addresses */
-static inline void
+static void
extract_fddi_addrs(const struct fddi_header *fddip, char *fsrc, char *fdst)
{
- register int i;
+ int i;
if (fddi_bitswap) {
/*
fdst[i] = fddi_bit_swap[fddip->fddi_dhost[i]];
for (i = 0; i < 6; ++i)
fsrc[i] = fddi_bit_swap[fddip->fddi_shost[i]];
- }
- else {
- memcpy(fdst, (char *)fddip->fddi_dhost, 6);
- memcpy(fsrc, (char *)fddip->fddi_shost, 6);
+ } else {
+ memcpy(fdst, (const char *)fddip->fddi_dhost, 6);
+ memcpy(fsrc, (const char *)fddip->fddi_shost, 6);
}
}
/*
* Print the FDDI MAC header
*/
-static inline void
-fddi_print(register const struct fddi_header *fddip, register u_int length,
- register const u_char *fsrc, register const u_char *fdst)
+static void
+fddi_hdr_print(netdissect_options *ndo,
+ const struct fddi_header *fddip, u_int length,
+ const u_char *fsrc, const u_char *fdst)
{
- char *srcname, *dstname;
-
- srcname = etheraddr_string(fsrc);
- dstname = etheraddr_string(fdst);
-
- if (vflag)
- (void) printf("%02x %s %s %d: ",
- fddip->fddi_fc,
- srcname, dstname,
- length);
- else if (qflag)
- printf("%s %s %d: ", srcname, dstname, length);
- else {
- (void) print_fddi_fc(fddip->fddi_fc);
- (void) printf("%s %s %d: ", srcname, dstname, length);
- }
+ const char *srcname, *dstname;
+
+ srcname = mac48_string(ndo, fsrc);
+ dstname = mac48_string(ndo, fdst);
+
+ if (!ndo->ndo_qflag)
+ print_fddi_fc(ndo, GET_U_1(fddip->fddi_fc));
+ ND_PRINT("%s > %s, length %u: ",
+ srcname, dstname,
+ length);
}
-static inline void
-fddi_smt_print(const u_char *p, u_int length)
+static void
+fddi_smt_print(netdissect_options *ndo, const u_char *p _U_, u_int length _U_)
{
- printf("<SMT printer not yet implemented>");
+ ND_PRINT("<SMT printer not yet implemented>");
}
-/*
- * This is the top level routine of the printer. 'sp' is the points
- * to the FDDI 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
-fddi_if_print(u_char *pcap, const struct pcap_pkthdr *h,
- register const u_char *p)
+u_int
+fddi_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
{
- u_int caplen = h->caplen;
- u_int length = h->len;
- const struct fddi_header *fddip = (struct fddi_header *)p;
- struct ether_header ehdr;
- u_short extracted_ethertype;
-
- ts_print(&h->ts);
+ const struct fddi_header *fddip = (const struct fddi_header *)p;
+ uint8_t fc;
+ nd_mac48 srcmac, dstmac;
+ struct lladdr_info src, dst;
+ int llc_hdrlen;
+ ndo->ndo_protocol = "fddi";
if (caplen < FDDI_HDRLEN) {
- printf("[|fddi]");
- goto out;
+ nd_print_trunc(ndo);
+ return (caplen);
}
+
+ fc = GET_U_1(fddip->fddi_fc);
+
/*
* Get the FDDI addresses into a canonical form
*/
- extract_fddi_addrs(fddip, (char *)ESRC(&ehdr), (char *)EDST(&ehdr));
- /*
- * Some printers want to get back at the link level addresses,
- * and/or check that they're not walking off the end of the packet.
- * Rather than pass them all the way down, we set these globals.
- */
- 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
- */
- packetp = (u_char *)&ehdr;
+ extract_fddi_addrs(fddip, (char *)srcmac, (char *)dstmac);
+
+ if (ndo->ndo_eflag)
+ fddi_hdr_print(ndo, fddip, length, srcmac, dstmac);
- if (eflag)
- fddi_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));
+ src.addr = srcmac;
+ src.addr_string = mac48_string;
+ dst.addr = dstmac;
+ dst.addr_string = mac48_string;
/* Skip over FDDI MAC header */
length -= FDDI_HDRLEN;
caplen -= FDDI_HDRLEN;
/* Frame Control field determines interpretation of packet */
- extracted_ethertype = 0;
- if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {
+ if ((fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {
/* Try to print the LLC-layer header & higher layers */
- if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr))
- == 0) {
+ llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
+ if (llc_hdrlen < 0) {
/*
* Some kinds of LLC packet we cannot
* handle intelligently
*/
- if (!eflag)
- fddi_print(fddip, length,
- ESRC(&ehdr), EDST(&ehdr));
- if (extracted_ethertype) {
- printf("(LLC %s) ",
- etherproto_string(htons(extracted_ethertype)));
- }
- if (!xflag && !qflag)
- default_print(p, caplen);
+ if (!ndo->ndo_suppress_default_print)
+ ND_DEFAULTPRINT(p, caplen);
+ llc_hdrlen = -llc_hdrlen;
}
- } else if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_SMT)
- fddi_smt_print(p, caplen);
- else {
+ } else if ((fc & FDDIFC_CLFF) == FDDIFC_SMT) {
+ fddi_smt_print(ndo, p, caplen);
+ llc_hdrlen = 0;
+ } else {
/* Some kinds of FDDI packet we cannot handle intelligently */
- if (!eflag)
- fddi_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));
- if (!xflag && !qflag)
- default_print(p, caplen);
+ if (!ndo->ndo_eflag)
+ fddi_hdr_print(ndo, fddip, length + FDDI_HDRLEN, srcmac,
+ dstmac);
+ if (!ndo->ndo_suppress_default_print)
+ ND_DEFAULTPRINT(p, caplen);
+ llc_hdrlen = 0;
}
- if (xflag)
- default_print(p, caplen);
-out:
- putchar('\n');
+ return (FDDI_HDRLEN + llc_hdrlen);
}
-#else
-#include <sys/types.h>
-#include <sys/time.h>
-
-#include <stdio.h>
-#include "interface.h"
+/*
+ * This is the top level routine of the printer. 'p' points
+ * to the FDDI header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
void
-fddi_if_print(u_char *pcap, const struct pcap_pkthdr *h,
- register const u_char *p)
+fddi_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
{
-
- error("not configured for fddi");
- /* NOTREACHED */
+ ndo->ndo_protocol = "fddi";
+ ndo->ndo_ll_hdr_len += fddi_print(ndo, p, h->len, h->caplen);
}
-#endif
projects / tcpdump / blobdiff