blob: e4c761b3e0c6e9019d462f2ef29244203190c756 [file] [log] [blame]
// Copyright (c) 2018 Arista Networks, Inc. All rights reserved.
/* \summary: EtherType protocol for Arista Networks printer */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "netdissect-stdinc.h"
#include <string.h>
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#define ARISTA_SUBTYPE_TIMESTAMP 0x01
#define ARISTA_TIMESTAMP_64_TAI 0x0010
#define ARISTA_TIMESTAMP_64_UTC 0x0110
#define ARISTA_TIMESTAMP_48_TAI 0x0020
#define ARISTA_TIMESTAMP_48_UTC 0x0120
static const struct tok ts_version_name[] = {
{ ARISTA_TIMESTAMP_64_TAI, "TAI(64-bit)" },
{ ARISTA_TIMESTAMP_64_UTC, "UTC(64-bit)" },
{ ARISTA_TIMESTAMP_48_TAI, "TAI(48-bit)" },
{ ARISTA_TIMESTAMP_48_UTC, "UTC(48-bit)" },
{ 0, NULL }
};
static inline void
arista_print_date_hms_time(netdissect_options *ndo, uint32_t seconds,
uint32_t nanoseconds)
{
time_t ts;
struct tm *tm;
char buf[BUFSIZE];
ts = seconds + (nanoseconds / 1000000000);
if (NULL == (tm = gmtime(&ts)))
ND_PRINT(": gmtime() error");
else if (0 == strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", tm))
ND_PRINT(": strftime() error");
else
ND_PRINT(": %s, %09u ns, ", buf, nanoseconds);
}
int
arista_ethertype_print(netdissect_options *ndo, const u_char *bp, u_int len _U_)
{
uint16_t subTypeId;
uint16_t version;
u_short bytesConsumed = 0;
u_short size = 0;
uint32_t seconds, nanoseconds;
ndo->ndo_protocol = "arista";
subTypeId = GET_BE_U_2(bp);
bp += 2;
version = GET_BE_U_2(bp);
bp += 2;
bytesConsumed += 4;
ND_PRINT("SubType: 0x%1x, Version: 0x%04x, ", subTypeId, version);
// TapAgg Header Timestamping
if (subTypeId == ARISTA_SUBTYPE_TIMESTAMP) {
// Timestamp has 32-bit lsb in nanosec and remaining msb in sec
ND_PRINT("Timestamp %s", tok2str(ts_version_name,
"Unknown timestamp Version 0x%04x ", version));
switch (version) {
case ARISTA_TIMESTAMP_64_TAI:
case ARISTA_TIMESTAMP_64_UTC:
seconds = GET_BE_U_4(bp);
nanoseconds = GET_BE_U_4(bp + 4);
arista_print_date_hms_time(ndo, seconds, nanoseconds);
bytesConsumed += size + 8;
break;
case ARISTA_TIMESTAMP_48_TAI:
case ARISTA_TIMESTAMP_48_UTC:
ND_PRINT(": Seconds %u,", GET_BE_U_2(bp));
ND_PRINT(" Nanoseconds %u, ", GET_BE_U_4(bp + 2));
bytesConsumed += size + 6;
break;
default:
return -1;
}
} else {
return -1;
}
return bytesConsumed;
}