#include "netdissect-stdinc.h"
#include "netdissect.h"
#include "extract.h"
-#include <string.h>
/*
* PTP header
* | domain No | rsvd1 | flag Field |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Correction NS |
- * | Correction Sub NS |
+ * + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | Correction Sub NS |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Reserved2 |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
+/* Values from IEEE1588-2008: 13.3.2.2 messageType (Enumeration4) */
#define M_SYNC 0x0
#define M_DELAY_REQ 0x1
#define M_PDELAY_REQ 0x2
#define M_PDELAY_RESP 0x3
-#define M_OTHER 0x5
#define M_FOLLOW_UP 0x8
#define M_DELAY_RESP 0x9
#define M_PDELAY_RESP_FOLLOW_UP 0xA
#define M_MANAGEMENT 0xD
static const struct tok ptp_msg_type[] = {
- { M_SYNC ,"sync msg"},
- { M_DELAY_REQ ,"delay req msg"},
- { M_PDELAY_REQ ,"peer delay req msg"},
- { M_PDELAY_RESP ,"peer delay resp msg"},
- { M_OTHER, "Other"},
- { M_FOLLOW_UP ,"follow up msg"},
- { M_DELAY_RESP ,"delay resp msg"},
- { M_PDELAY_RESP_FOLLOW_UP ,"pdelay resp fup msg"},
- { M_ANNOUNCE ,"announce msg"},
- { M_SIGNALLING ,"signalling msg"},
- { M_MANAGEMENT ,"management msg"},
+ { M_SYNC, "sync msg"},
+ { M_DELAY_REQ, "delay req msg"},
+ { M_PDELAY_REQ, "peer delay req msg"},
+ { M_PDELAY_RESP, "peer delay resp msg"},
+ { M_FOLLOW_UP, "follow up msg"},
+ { M_DELAY_RESP, "delay resp msg"},
+ { M_PDELAY_RESP_FOLLOW_UP, "pdelay resp fup msg"},
+ { M_ANNOUNCE, "announce msg"},
+ { M_SIGNALLING, "signalling msg"},
+ { M_MANAGEMENT, "management msg"},
{ 0, NULL}
};
+/* Values from IEEE1588-2008: 13.3.2.10 controlField (UInteger8) */
+/*
+ * The use of this field by the receiver is deprecated.
+ * NOTE-This field is provided for compatibility with hardware designed
+ * to conform to version 1 of this standard.
+ */
+#define C_SYNC 0x0
+#define C_DELAY_REQ 0x1
+#define C_FOLLOW_UP 0x2
+#define C_DELAY_RESP 0x3
+#define C_MANAGEMENT 0x4
+#define C_OTHER 0x5
+
+static const struct tok ptp_control_field[] = {
+ { C_SYNC, "Sync"},
+ { C_DELAY_REQ, "Delay_Req"},
+ { C_FOLLOW_UP, "Follow_Up"},
+ { C_DELAY_RESP, "Delay_Resp"},
+ { C_MANAGEMENT, "Management"},
+ { C_OTHER, "Other"},
+ { 0, NULL}
+};
#define PTP_TRUE 1
#define PTP_FALSE !PTP_TRUE
#define PTP_SECURITY_MASK 0x4000
#define PTP_FLAGS_UNKNOWN_MASK 0x18C0
-
static const struct tok ptp_flag_values[] = {
- { PTP_L161_MASK ,"l1 61"},
- { PTP_L1_59_MASK ,"l1 59"},
- { PTP_UTC_REASONABLE_MASK ,"utc reasonable"},
- { PTP_TIMESCALE_MASK ,"timescale"},
- { PTP_TIME_TRACABLE_MASK ,"time tracable"},
- { PTP_FREQUENCY_TRACABLE_MASK ,"frequency tracable"},
- { PTP_ALTERNATE_MASTER_MASK ,"alternate master"},
- { PTP_TWO_STEP_MASK ,"two step"},
- { PTP_UNICAST_MASK ,"unicast"},
- { PTP_PROFILE_SPEC_1_MASK ,"profile specific 1"},
- { PTP_PROFILE_SPEC_2_MASK ,"profile specific 2"},
- { PTP_SECURITY_MASK ,"security mask"},
- { PTP_FLAGS_UNKNOWN_MASK , "unknown"},
+ { PTP_L161_MASK, "l1 61"},
+ { PTP_L1_59_MASK, "l1 59"},
+ { PTP_UTC_REASONABLE_MASK, "utc reasonable"},
+ { PTP_TIMESCALE_MASK, "timescale"},
+ { PTP_TIME_TRACABLE_MASK, "time tracable"},
+ { PTP_FREQUENCY_TRACABLE_MASK, "frequency tracable"},
+ { PTP_ALTERNATE_MASTER_MASK, "alternate master"},
+ { PTP_TWO_STEP_MASK, "two step"},
+ { PTP_UNICAST_MASK, "unicast"},
+ { PTP_PROFILE_SPEC_1_MASK, "profile specific 1"},
+ { PTP_PROFILE_SPEC_2_MASK, "profile specific 2"},
+ { PTP_SECURITY_MASK, "security mask"},
+ { PTP_FLAGS_UNKNOWN_MASK, "unknown"},
{0, NULL}
};
-#define PTP_PRINT_MSG_TYPE(e) \
- { \
- ND_PRINT("(%s)", tok2str(ptp_msg_type, "unknown", e)); \
- }
-
-const char *p_porigin_ts = "preciseOriginTimeStamp";
-const char *p_origin_ts = "originTimeStamp";
-const char *p_recv_ts = "receiveTimeStamp";
+static const char *p_porigin_ts = "preciseOriginTimeStamp";
+static const char *p_origin_ts = "originTimeStamp";
+static const char *p_recv_ts = "receiveTimeStamp";
#define PTP_VER_1 0x1
#define PTP_VER_2 0x2
#define PTP_6BYTES_LEN sizeof(uint32_t)+sizeof(uint16_t)
#define PTP_UINT64_LEN sizeof(uint64_t)
-
-
static void ptp_print_1(netdissect_options *ndo);
static void ptp_print_2(netdissect_options *ndo, const u_char *bp, u_int len);
static void
ptp_print_1(netdissect_options *ndo)
{
- ND_PRINT("ptp version 1: not implemented\n");
+ ND_PRINT(" (not implemented)");
}
-static void ptp_print_2(netdissect_options *ndo, const u_char *bp, u_int length)
+static void
+ptp_print_2(netdissect_options *ndo, const u_char *bp, u_int length)
{
u_int len = length;
- uint16_t msg_len, flags, seq_id;
- uint8_t foct, domain_no, msg_type, v1_compat, rsvd1, port_id, lm_int, control;
- uint32_t ns_corr, sns_corr, rsvd2;
+ uint16_t msg_len, flags, port_id, seq_id;
+ uint8_t foct, domain_no, msg_type, v1_compat, rsvd1, lm_int, control;
+ uint64_t ns_corr;
+ uint16_t sns_corr;
+ uint32_t rsvd2;
uint64_t clk_id;
foct = GET_U_1(bp);
v1_compat = foct & PTP_V1_COMPAT;
ND_PRINT(", v1 compat : %s", v1_compat?"yes":"no");
msg_type = foct & PTP_MSG_TYPE_MASK;
- ND_PRINT(", msg type : %s", tok2str(ptp_msg_type, "none", msg_type));
+ ND_PRINT(", msg type : %s", tok2str(ptp_msg_type, "Reserved", msg_type));
/* msg length */
len -= 2; bp += 2; msg_len = GET_BE_U_2(bp); ND_PRINT(", length : %u", msg_len);
/* domain */
- len -= 2; bp += 2; domain_no = GET_BE_U_2(bp) & PTP_DOMAIN_MASK; ND_PRINT(", domain : %u", domain_no);
+ len -= 2; bp += 2; domain_no = (GET_BE_U_2(bp) & PTP_DOMAIN_MASK) >> 8; ND_PRINT(", domain : %u", domain_no);
/* rsvd 1*/
rsvd1 = GET_BE_U_2(bp) & PTP_RSVD1_MASK;
/* flags */
len -= 2; bp += 2; flags = GET_BE_U_2(bp); ND_PRINT(", Flags [%s]", bittok2str(ptp_flag_values, "none", flags));
- /* correction NS */
- len -= 2; bp += 2; ns_corr = GET_BE_U_4(bp); ND_PRINT(", NS correction : %u", ns_corr);
+ /* correction NS (48 bits) */
+ len -= 2; bp += 2; ns_corr = GET_BE_U_6(bp); ND_PRINT(", NS correction : %"PRIu64, ns_corr);
- /* correction sub NS */
- len -= 4; bp += 4; sns_corr = GET_BE_U_4(bp); ND_PRINT(", sub NS correction : %u", sns_corr);
+ /* correction sub NS (16 bits) */
+ len -= 6; bp += 6; sns_corr = GET_BE_U_2(bp); ND_PRINT(", sub NS correction : %u", sns_corr);
/* Reserved 2 */
- len -= 4; bp += 4; rsvd2 = GET_BE_U_4(bp); ND_PRINT(", reserved2 : %u", rsvd2);
+ len -= 2; bp += 2; rsvd2 = GET_BE_U_4(bp); ND_PRINT(", reserved2 : %u", rsvd2);
/* clock identity */
len -= 4; bp += 4; clk_id = GET_BE_U_8(bp); ND_PRINT(", clock identity : 0x%"PRIx64, clk_id);
/* control */
len -= 2; bp += 2; control = GET_U_1(bp) ;
- ND_PRINT(", control : %u (%s)", control, tok2str(ptp_msg_type, "none", control));
+ ND_PRINT(", control : %u (%s)", control, tok2str(ptp_control_field, "Reserved", control));
/* log message interval */
lm_int = GET_BE_U_2(bp) & PTP_LOGMSG_MASK; ND_PRINT(", log message interval : %u", lm_int); len -= 2; bp += 2;
* PTP general message
*/
void
-ptp_print(netdissect_options *ndo, const u_char *bp, u_int len)
+ptp_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
u_int vers;
ndo->ndo_protocol = "ptp";
- if (len < PTP_HDR_LEN) {
- goto trunc;
- }
+ ND_LCHECK_U(length, PTP_HDR_LEN);
vers = GET_BE_U_2(bp) & PTP_VERS_MASK;
ND_PRINT("PTPv%u",vers);
switch(vers) {
ptp_print_1(ndo);
break;
case PTP_VER_2:
- ptp_print_2(ndo, bp, len);
+ ptp_print_2(ndo, bp, length);
break;
default:
//ND_PRINT("ERROR: unknown-version\n");
}
return;
-trunc:
- nd_print_trunc(ndo);
- return;
+invalid:
+ nd_print_invalid(ndo);
}
static void
ND_PRINT(", %s :", stype);
/* sec time stamp 6 bytes */
- secs = GET_BE_U_2(bp) + GET_BE_U_4(bp+2);
+ secs = GET_BE_U_6(bp);
ND_PRINT(" %"PRIu64" seconds,", secs);
*len -= 6;
bp += 6;
ND_PRINT(", %s :", ttype);
/* sec time stamp 6 bytes */
- secs = GET_BE_U_2(bp) + GET_BE_U_4(bp+2);
+ secs = GET_BE_U_6(bp);
ND_PRINT(" %"PRIu64" seconds,", secs);
*len -= 6;
bp += 6;
ND_PRINT(", %s :", p_origin_ts);
/* sec time stamp 6 bytes */
- secs = GET_BE_U_2(bp) + GET_BE_U_4(bp+2);
+ secs = GET_BE_U_6(bp);
ND_PRINT(" %"PRIu64" seconds", secs);
*len -= 6;
bp += 6;
projects / tcpdump / blobdiff