*
*/
-#define NETDISSECT_REWORKED
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: Common Address Redundancy Protocol (CARP) printer */
-#include <tcpdump-stdinc.h>
+#include <config.h>
-#include "interface.h" /* for checksum structure and functions */
+#include "netdissect-stdinc.h"
+
+#include "netdissect.h" /* for checksum structure and functions */
#include "extract.h"
void
-carp_print(netdissect_options *ndo, register const u_char *bp, register u_int len, int ttl)
+carp_print(netdissect_options *ndo, const u_char *bp, u_int len, u_int ttl)
{
- int version, type;
+ u_int version, type;
const char *type_s;
- ND_TCHECK(bp[0]);
- version = (bp[0] & 0xf0) >> 4;
- type = bp[0] & 0x0f;
+ ndo->ndo_protocol = "carp";
+ nd_print_protocol_caps(ndo);
+ version = (GET_U_1(bp) & 0xf0) >> 4;
+ type = GET_U_1(bp) & 0x0f;
if (type == 1)
type_s = "advertise";
else
type_s = "unknown";
- ND_PRINT((ndo, "CARPv%d-%s %d: ", version, type_s, len));
+ ND_PRINT("v%u-%s %u: ", version, type_s, len);
if (ttl != 255)
- ND_PRINT((ndo, "[ttl=%d!] ", ttl));
+ ND_PRINT("[ttl=%u!] ", ttl);
if (version != 2 || type != 1)
return;
- ND_TCHECK(bp[2]);
- ND_TCHECK(bp[5]);
- ND_PRINT((ndo, "vhid=%d advbase=%d advskew=%d authlen=%d ",
- bp[1], bp[5], bp[2], bp[3]));
+ ND_PRINT("vhid=%u advbase=%u advskew=%u authlen=%u ",
+ GET_U_1(bp + 1), GET_U_1(bp + 5), GET_U_1(bp + 2),
+ GET_U_1(bp + 3));
if (ndo->ndo_vflag) {
struct cksum_vec vec[1];
vec[0].ptr = (const uint8_t *)bp;
vec[0].len = len;
- if (ND_TTEST2(bp[0], len) && in_cksum(vec, 1))
- ND_PRINT((ndo, " (bad carp cksum %x!)",
- EXTRACT_16BITS(&bp[6])));
+ if (ND_TTEST_LEN(bp, len) && in_cksum(vec, 1))
+ ND_PRINT(" (bad carp cksum %x!)",
+ GET_BE_U_2(bp + 6));
}
- ND_PRINT((ndo, "counter=%" PRIu64, EXTRACT_64BITS(&bp[8])));
-
- return;
-trunc:
- ND_PRINT((ndo, "[|carp]"));
+ ND_PRINT("counter=%" PRIu64, GET_BE_U_8(bp + 8));
}