X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/979fc38d033c43d68149954d64c93a273d358040..refs/pull/1034/head:/print-cip.c

diff --git a/print-cip.c b/print-cip.c
index 91abe08d..b8ef77fd 100644
--- a/print-cip.c
+++ b/print-cip.c
@@ -20,20 +20,20 @@
  *
  */
 
-#define NETDISSECT_REWORKED
+/* \summary: Linux Classical IP over ATM printer */
+
 #ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
 #endif
 
 #include <string.h>
 
-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"
 
-#include "interface.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
 #include "addrtoname.h"
 
-#define RFC1483LLC_LEN	8
-
 static const unsigned char rfcllc[] = {
 	0xaa,	/* DSAP: non-ISO */
 	0xaa,	/* SSAP: non-ISO */
@@ -42,66 +42,46 @@ static const unsigned char rfcllc[] = {
 	0x00,
 	0x00 };
 
-static inline void
-cip_print(netdissect_options *ndo, int length)
-{
-	/*
-	 * There is no MAC-layer header, so just print the length.
-	 */
-	ND_PRINT((ndo, "%d: ", length));
-}
-
 /*
  * This is the top level routine of the printer.  'p' points
  * to the LLC/SNAP or raw 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.
  */
-u_int
+void
 cip_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
 {
 	u_int caplen = h->caplen;
 	u_int length = h->len;
-	u_short extracted_ethertype;
+	int llc_hdrlen;
 
-	if (memcmp(rfcllc, p, sizeof(rfcllc))==0 && caplen < RFC1483LLC_LEN) {
-		ND_PRINT((ndo, "[|cip]"));
-		return (0);
-	}
+	ndo->ndo_protocol = "cip";
 
 	if (ndo->ndo_eflag)
-		cip_print(ndo, length);
+		/*
+		 * There is no MAC-layer header, so just print the length.
+		 */
+		ND_PRINT("%u: ", length);
 
+	ND_TCHECK_LEN(p, sizeof(rfcllc));
 	if (memcmp(rfcllc, p, sizeof(rfcllc)) == 0) {
 		/*
 		 * LLC header is present.  Try to print it & higher layers.
 		 */
-		if (llc_print(ndo, p, length, caplen, NULL, NULL,
-		    &extracted_ethertype) == 0) {
-			/* ether_type not known, print raw packet */
-			if (!ndo->ndo_eflag)
-				cip_print(ndo, length);
-			if (extracted_ethertype) {
-				ND_PRINT((ndo, "(LLC %s) ",
-			       etherproto_string(htons(extracted_ethertype))));
-			}
+		llc_hdrlen = llc_print(ndo, p, length, caplen, NULL, NULL);
+		if (llc_hdrlen < 0) {
+			/* packet type not known, print raw packet */
 			if (!ndo->ndo_suppress_default_print)
 				ND_DEFAULTPRINT(p, caplen);
+			llc_hdrlen = -llc_hdrlen;
 		}
 	} else {
 		/*
 		 * LLC header is absent; treat it as just IP.
 		 */
+		llc_hdrlen = 0;
 		ip_print(ndo, p, length);
 	}
 
-	return (0);
+	ndo->ndo_ll_hdr_len += llc_hdrlen;
 }
-
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 8
- * End:
- */