*
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-lane.c,v 1.19 2002-12-18 09:41:16 guy Exp $ (LBL)";
-#endif
+/* \summary: ATM LANE printer */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"
-#include <stdio.h>
-#include <pcap.h>
-
-#include "interface.h"
-#include "addrtoname.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "extract.h"
-#include "ether.h"
-#include "lane.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" },
{ 0, NULL }
};
-static inline void
-lane_hdr_print(register const u_char *bp, int length)
+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:%x %s %s %d: ",
- EXTRACT_16BITS(&ep->le_header),
- etheraddr_string(ep->h_source),
- etheraddr_string(ep->h_dest),
- length);
- else
- (void)printf("lecid:%x %s %s %s %d: ",
- EXTRACT_16BITS(&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' points
- * to the LANE header of the packet, 'h->ts' 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_print(const u_char *p, u_int length, u_int caplen)
+lane_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
{
- struct lane_controlhdr *lec;
- struct lecdatahdr_8023 *ep;
- u_short ether_type;
- u_short extracted_ethertype;
+ const struct lane_controlhdr *lec;
- if (caplen < sizeof(struct lane_controlhdr)) {
- printf("[|lane]");
- return;
- }
+ ndo->ndo_protocol = "lane";
- lec = (struct lane_controlhdr *)p;
- if (EXTRACT_16BITS(&lec->lec_header) == 0xff00) {
+ lec = (const struct lane_controlhdr *)p;
+ if (GET_BE_U_2(lec->lec_header) == 0xff00) {
/*
* LE Control.
*/
- printf("lec: proto %x vers %x %s",
- lec->lec_proto, lec->lec_vers,
- tok2str(lecop2str, "opcode-#%u", EXTRACT_16BITS(&lec->lec_opcode)));
+ 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 (caplen < sizeof(struct lecdatahdr_8023)) {
- printf("[|lane]");
- return;
- }
-
- if (eflag)
- lane_hdr_print(p, length);
-
- /*
- * Some printers want to check that they're not walking off the
- * end of the packet.
- * Rather than pass it all the way down, we set this global.
- */
- snapend = p + caplen;
-
/*
- * Go past the LANE header.
+ * Go past the LE header.
*/
- length -= sizeof(struct lecdatahdr_8023);
- caplen -= sizeof(struct lecdatahdr_8023);
- ep = (struct lecdatahdr_8023 *)p;
- p += sizeof(struct lecdatahdr_8023);
-
- ether_type = EXTRACT_16BITS(&ep->h_type);
-
- /*
- * Is it (gag) an 802.3 encapsulation?
- */
- 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,
- &extracted_ethertype) == 0) {
- /* ether_type not known, print raw packet */
- if (!eflag)
- lane_hdr_print((u_char *)ep, length + sizeof(*ep));
- 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,
- &extracted_ethertype) == 0) {
- /* ether_type not known, print raw packet */
- if (!eflag)
- lane_hdr_print((u_char *)ep, length + sizeof(*ep));
- if (!xflag && !qflag)
- default_print(p, caplen);
- }
-}
-
-void
-lane_if_print(u_char *user _U_, const struct pcap_pkthdr *h, const u_char *p)
-{
- int caplen = h->caplen;
- int length = h->len;
-
- ++infodelay;
- ts_print(&h->ts);
-
- lane_print(p, length, caplen);
+ ND_TCHECK_2(p); /* Needed */
+ length -= 2;
+ caplen -= 2;
+ p += 2;
/*
- * If "-x" was specified, print packet data in hex.
+ * Now print the encapsulated frame, under the assumption
+ * that it's an Ethernet frame.
*/
- if (xflag)
- default_print_packet(p, caplen,
- sizeof(struct lecdatahdr_8023));
-
- putchar('\n');
- --infodelay;
- if (infoprint)
- info(0);
+ ether_print(ndo, p, length, caplen, lane_hdr_print, p - 2);
}
projects / tcpdump / blobdiff