/*
- *
+ *
* Tampere University of Technology - Telecommunications Laboratory
*
* Permission to use, copy, modify and distribute this
* documentation, and that the use of this software is
* acknowledged in any publications resulting from using
* the software.
- *
+ *
* TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
* SOFTWARE.
- *
+ *
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-lane.c,v 1.8 2000-09-28 06:43:02 guy Exp $ (LBL)";
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-
-#include <stdio.h>
-#include <pcap.h>
-
-#include "interface.h"
-#include "addrtoname.h"
-#include "ether.h"
-#include "lane.h"
-
-static inline void
-lane_print(register const u_char *bp, int length)
+/* \summary: ATM LANE printer */
+
+#include <config.h>
+
+#include "netdissect-stdinc.h"
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "extract.h"
+
+struct lecdatahdr_8023 {
+ nd_uint16_t le_header;
+ nd_mac48 h_dest;
+ nd_mac48 h_source;
+ nd_uint16_t h_type;
+};
+
+struct lane_controlhdr {
+ nd_uint16_t lec_header;
+ nd_uint8_t lec_proto;
+ nd_uint8_t lec_vers;
+ nd_uint16_t lec_opcode;
+};
+
+static const struct tok lecop2str[] = {
+ { 0x0001, "configure request" },
+ { 0x0101, "configure response" },
+ { 0x0002, "join request" },
+ { 0x0102, "join response" },
+ { 0x0003, "ready query" },
+ { 0x0103, "ready indication" },
+ { 0x0004, "register request" },
+ { 0x0104, "register response" },
+ { 0x0005, "unregister request" },
+ { 0x0105, "unregister response" },
+ { 0x0006, "ARP request" },
+ { 0x0106, "ARP response" },
+ { 0x0007, "flush request" },
+ { 0x0107, "flush response" },
+ { 0x0008, "NARP request" },
+ { 0x0009, "topology request" },
+ { 0, NULL }
+};
+
+static void
+lane_hdr_print(netdissect_options *ndo, const u_char *bp)
{
- register const struct lecdatahdr_8023 *ep;
-
- ep = (const struct lecdatahdr_8023 *)bp;
- if (qflag)
- (void)printf("lecid:%d %s %s %d: ",
- ntohs(ep->le_header),
- etheraddr_string(ep->h_source),
- etheraddr_string(ep->h_dest),
- length);
- else
- (void)printf("lecid:%d %s %s %s %d: ",
- ntohs(ep->le_header),
- etheraddr_string(ep->h_source),
- etheraddr_string(ep->h_dest),
- etherproto_string(ep->h_type),
- length);
+ ND_PRINT("lecid:%x ", GET_BE_U_2(bp));
}
/*
- * This is the top level routine of the printer. 'p' is the points
- * to the ether header of the packet, 'h->tv' is the timestamp,
- * 'h->length' is the length of the packet off the wire, and 'h->caplen'
- * is the number of bytes actually captured.
+ * This assumes 802.3, not 802.5, LAN emulation.
*/
void
-lane_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
+lane_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
{
- int caplen = h->caplen;
- int length = h->len;
- struct lecdatahdr_8023 *ep;
- u_short ether_type;
- u_short extracted_ethertype;
-
- ts_print(&h->ts);
-
- if (caplen < sizeof(struct lecdatahdr_8023)) {
- printf("[|lane]");
- goto out;
+ const struct lane_controlhdr *lec;
+
+ ndo->ndo_protocol = "lane";
+
+ lec = (const struct lane_controlhdr *)p;
+ if (GET_BE_U_2(lec->lec_header) == 0xff00) {
+ /*
+ * LE Control.
+ */
+ ND_PRINT("lec: proto %x vers %x %s",
+ GET_U_1(lec->lec_proto),
+ GET_U_1(lec->lec_vers),
+ tok2str(lecop2str, "opcode-#%u", GET_BE_U_2(lec->lec_opcode)));
+ return;
}
- if (eflag)
- lane_print(p, length);
-
/*
- * Some printers want to get back at the ethernet 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.
+ * Go past the LE header.
*/
- packetp = p;
- snapend = p + caplen;
-
- length -= sizeof(struct lecdatahdr_8023);
- caplen -= sizeof(struct lecdatahdr_8023);
- ep = (struct lecdatahdr_8023 *)p;
- p += sizeof(struct lecdatahdr_8023);
-
- ether_type = ntohs(ep->h_type);
+ ND_TCHECK_2(p); /* Needed */
+ length -= 2;
+ caplen -= 2;
+ p += 2;
/*
- * Is it (gag) an 802.3 encapsulation?
+ * Now print the encapsulated frame, under the assumption
+ * that it's an Ethernet frame.
*/
- extracted_ethertype = 0;
- if (ether_type < ETHERMTU) {
- /* Try to print the LLC-layer header & higher layers */
- if (llc_print(p, length, caplen, ep->h_source,ep->h_dest)==0) {
- /* ether_type not known, print raw packet */
- if (!eflag)
- lane_print((u_char *)ep, length);
- if (extracted_ethertype) {
- printf("(LLC %s) ",
- etherproto_string(htons(extracted_ethertype)));
- }
- if (!xflag && !qflag)
- default_print(p, caplen);
- }
- } else if (ether_encap_print(ether_type, p, length, caplen) == 0) {
- /* ether_type not known, print raw packet */
- if (!eflag)
- lane_print((u_char *)ep, length + sizeof(*ep));
- if (!xflag && !qflag)
- default_print(p, caplen);
- }
- if (xflag)
- default_print(p, caplen);
- out:
- putchar('\n');
+ ether_print(ndo, p, length, caplen, lane_hdr_print, p - 2);
}
projects / tcpdump / blobdiff