summaryrefslogtreecommitdiffstats
path: root/print-ptp.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--print-ptp.c634
1 files changed, 634 insertions, 0 deletions
diff --git a/print-ptp.c b/print-ptp.c
new file mode 100644
index 0000000..a1c09c0
--- /dev/null
+++ b/print-ptp.c
@@ -0,0 +1,634 @@
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code
+ * distributions retain the above copyright notice and this paragraph
+ * in its entirety, and (2) distributions including binary code include
+ * the above copyright notice and this paragraph in its entirety in
+ * the documentation or other materials provided with the distribution.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
+ * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
+ * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE.
+ *
+ * Original code by Partha S. Ghosh (psglinux dot gmail dot com)
+ */
+
+/* \summary: Precision Time Protocol (PTP) printer */
+
+/* specification: https://standards.ieee.org/findstds/standard/1588-2008.html*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+#include "netdissect.h"
+#include "extract.h"
+
+/*
+ * PTP header
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | R | |msgtype| version | Msg Len |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | domain No | rsvd1 | flag Field |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Correction NS |
+ * + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | Correction Sub NS |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Reserved2 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Clock Identity |
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Port Identity | Sequence ID |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | control | log msg int |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * 0 1 2 3
+ *
+ * Announce Message (msg type=0xB)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Origin Cur UTC Offset | Reserved | GM Prio 1 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |GM Clock Class | GM Clock Accu | GM Clock Variance |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | GM Prio 2 | |
+ * +-+-+-+-+-+-+-+-+ +
+ * | GM Clock Identity |
+ * + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | Steps Removed | Time Source |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * 0 1 2 3
+ *
+ * Sync Message (msg type=0x0)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Delay Request Message (msg type=0x1)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Origin Time Stamp Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Followup Message (msg type=0x8)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Precise Origin Time Stamp Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Delay Resp Message (msg type=0x9)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Port Identity |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * PDelay Request Message (msg type=0x2)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Origin Time Stamp Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Origin Time Stamp Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Port Identity |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * PDelay Response Message (msg type=0x3)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Request receipt Time Stamp Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Requesting Port Identity |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * PDelay Resp Follow up Message (msg type=0xA)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
+ * | Response Origin Time Stamp Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Nano Seconds |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Requesting Port Identity |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Signalling Message (msg type=0xC)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Requesting Port Identity |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Management Message (msg type=0xD)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Requesting Port Identity |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |Start Bndry Hps| Boundary Hops | flags | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ */
+
+/* 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_FOLLOW_UP 0x8
+#define M_DELAY_RESP 0x9
+#define M_PDELAY_RESP_FOLLOW_UP 0xA
+#define M_ANNOUNCE 0xB
+#define M_SIGNALLING 0xC
+#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_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_HDR_LEN 0x22
+
+/* mask based on the first byte */
+#define PTP_VERS_MASK 0xFF
+#define PTP_V1_COMPAT 0x10
+#define PTP_MSG_TYPE_MASK 0x0F
+
+/*mask based 2byte */
+#define PTP_DOMAIN_MASK 0xFF00
+#define PTP_RSVD1_MASK 0xFF
+#define PTP_CONTROL_MASK 0xFF
+#define PTP_LOGMSG_MASK 0xFF
+
+/* mask based on the flags 2 bytes */
+
+#define PTP_L161_MASK 0x1
+#define PTP_L1_59_MASK 0x2
+#define PTP_UTC_REASONABLE_MASK 0x4
+#define PTP_TIMESCALE_MASK 0x8
+#define PTP_TIME_TRACABLE_MASK 0x10
+#define PTP_FREQUENCY_TRACABLE_MASK 0x20
+#define PTP_ALTERNATE_MASTER_MASK 0x100
+#define PTP_TWO_STEP_MASK 0x200
+#define PTP_UNICAST_MASK 0x400
+#define PTP_PROFILE_SPEC_1_MASK 0x1000
+#define PTP_PROFILE_SPEC_2_MASK 0x2000
+#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"},
+ {0, NULL}
+};
+
+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_UCHAR_LEN sizeof(uint8_t)
+#define PTP_UINT16_LEN sizeof(uint16_t)
+#define PTP_UINT32_LEN sizeof(uint32_t)
+#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_timestamp(netdissect_options *ndo, const u_char *bp, u_int *len, const char *stype);
+static void ptp_print_timestamp_identity(netdissect_options *ndo, const u_char *bp, u_int *len, const char *ttype);
+static void ptp_print_announce_msg(netdissect_options *ndo, const u_char *bp, u_int *len);
+static void ptp_print_port_id(netdissect_options *ndo, const u_char *bp, u_int *len);
+static void ptp_print_mgmt_msg(netdissect_options *ndo, const u_char *bp, u_int *len);
+
+static void
+print_field(netdissect_options *ndo, const char *st, uint32_t flen,
+ const u_char *bp, u_int *len, uint8_t hex)
+{
+ uint8_t u8_val;
+ uint16_t u16_val;
+ uint32_t u32_val;
+ uint64_t u64_val;
+
+ switch(flen) {
+ case PTP_UCHAR_LEN:
+ u8_val = GET_U_1(bp);
+ ND_PRINT(", %s", st);
+ if (hex)
+ ND_PRINT(" 0x%x", u8_val);
+ else
+ ND_PRINT(" %u", u8_val);
+ *len -= 1; bp += 1;
+ break;
+ case PTP_UINT16_LEN:
+ u16_val = GET_BE_U_2(bp);
+ ND_PRINT(", %s", st);
+ if (hex)
+ ND_PRINT(" 0x%x", u16_val);
+ else
+ ND_PRINT(" %u", u16_val);
+ *len -= 2; bp += 2;
+ break;
+ case PTP_UINT32_LEN:
+ u32_val = GET_BE_U_4(bp);
+ ND_PRINT(", %s", st);
+ if (hex)
+ ND_PRINT(" 0x%x", u32_val);
+ else
+ ND_PRINT(" %u", u32_val);
+ *len -= 4; bp += 4;
+ break;
+ case PTP_UINT64_LEN:
+ u64_val = GET_BE_U_8(bp);
+ ND_PRINT(", %s", st);
+ if (hex)
+ ND_PRINT(" 0x%"PRIx64, u64_val);
+ else
+ ND_PRINT(" 0x%"PRIu64, u64_val);
+ *len -= 8; bp += 8;
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+ptp_print_1(netdissect_options *ndo)
+{
+ ND_PRINT(" (not implemented)");
+}
+
+static void
+ptp_print_2(netdissect_options *ndo, const u_char *bp, u_int length)
+{
+ u_int len = length;
+ 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, "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) >> 8; ND_PRINT(", domain : %u", domain_no);
+
+ /* rsvd 1*/
+ rsvd1 = GET_BE_U_2(bp) & PTP_RSVD1_MASK;
+ ND_PRINT(", reserved1 : %u", rsvd1);
+
+ /* flags */
+ len -= 2; bp += 2; flags = GET_BE_U_2(bp); ND_PRINT(", Flags [%s]", bittok2str(ptp_flag_values, "none", flags));
+
+ /* 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 (16 bits) */
+ len -= 6; bp += 6; sns_corr = GET_BE_U_2(bp); ND_PRINT(", sub NS correction : %u", sns_corr);
+
+ /* Reserved 2 */
+ 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);
+
+ /* port identity */
+ len -= 8; bp += 8; port_id = GET_BE_U_2(bp); ND_PRINT(", port id : %u", port_id);
+
+ /* sequence ID */
+ len -= 2; bp += 2; seq_id = GET_BE_U_2(bp); ND_PRINT(", seq id : %u", seq_id);
+
+ /* control */
+ len -= 2; bp += 2; control = GET_U_1(bp) ;
+ 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;
+
+ switch(msg_type) {
+ case M_SYNC:
+ ptp_print_timestamp(ndo, bp, &len, p_origin_ts);
+ break;
+ case M_DELAY_REQ:
+ ptp_print_timestamp(ndo, bp, &len, p_origin_ts);
+ break;
+ case M_PDELAY_REQ:
+ ptp_print_timestamp_identity(ndo, bp, &len, p_porigin_ts);
+ break;
+ case M_PDELAY_RESP:
+ ptp_print_timestamp_identity(ndo, bp, &len, p_recv_ts);
+ break;
+ case M_FOLLOW_UP:
+ ptp_print_timestamp(ndo, bp, &len, p_porigin_ts);
+ break;
+ case M_DELAY_RESP:
+ ptp_print_timestamp_identity(ndo, bp, &len, p_recv_ts);
+ break;
+ case M_PDELAY_RESP_FOLLOW_UP:
+ ptp_print_timestamp_identity(ndo, bp, &len, p_porigin_ts);
+ break;
+ case M_ANNOUNCE:
+ ptp_print_announce_msg(ndo, bp, &len);
+ break;
+ case M_SIGNALLING:
+ ptp_print_port_id(ndo, bp, &len);
+ break;
+ case M_MANAGEMENT:
+ ptp_print_mgmt_msg(ndo, bp, &len);
+ break;
+ default:
+ break;
+ }
+}
+/*
+ * PTP general message
+ */
+void
+ptp_print(netdissect_options *ndo, const u_char *bp, u_int length)
+{
+ u_int vers;
+
+ ndo->ndo_protocol = "ptp";
+ ND_LCHECK_U(length, PTP_HDR_LEN);
+ vers = GET_BE_U_2(bp) & PTP_VERS_MASK;
+ ND_PRINT("PTPv%u",vers);
+ switch(vers) {
+ case PTP_VER_1:
+ ptp_print_1(ndo);
+ break;
+ case PTP_VER_2:
+ ptp_print_2(ndo, bp, length);
+ break;
+ default:
+ //ND_PRINT("ERROR: unknown-version\n");
+ break;
+ }
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+}
+
+static void
+ptp_print_timestamp(netdissect_options *ndo, const u_char *bp, u_int *len, const char *stype)
+{
+ uint64_t secs;
+ uint32_t nsecs;
+
+ ND_PRINT(", %s :", stype);
+ /* sec time stamp 6 bytes */
+ secs = GET_BE_U_6(bp);
+ ND_PRINT(" %"PRIu64" seconds,", secs);
+ *len -= 6;
+ bp += 6;
+
+ /* NS time stamp 4 bytes */
+ nsecs = GET_BE_U_4(bp);
+ ND_PRINT(" %u nanoseconds", nsecs);
+ *len -= 4;
+ bp += 4;
+}
+static void
+ptp_print_timestamp_identity(netdissect_options *ndo,
+ const u_char *bp, u_int *len, const char *ttype)
+{
+ uint64_t secs;
+ uint32_t nsecs;
+ uint16_t port_id;
+ uint64_t port_identity;
+
+ ND_PRINT(", %s :", ttype);
+ /* sec time stamp 6 bytes */
+ secs = GET_BE_U_6(bp);
+ ND_PRINT(" %"PRIu64" seconds,", secs);
+ *len -= 6;
+ bp += 6;
+
+ /* NS time stamp 4 bytes */
+ nsecs = GET_BE_U_4(bp);
+ ND_PRINT(" %u nanoseconds", nsecs);
+ *len -= 4;
+ bp += 4;
+
+ /* port identity*/
+ port_identity = GET_BE_U_8(bp);
+ ND_PRINT(", port identity : 0x%"PRIx64, port_identity);
+ *len -= 8;
+ bp += 8;
+
+ /* port id */
+ port_id = GET_BE_U_2(bp);
+ ND_PRINT(", port id : %u", port_id);
+ *len -= 2;
+ bp += 2;
+}
+static void
+ptp_print_announce_msg(netdissect_options *ndo, const u_char *bp, u_int *len)
+{
+ uint8_t rsvd, gm_prio_1, gm_prio_2, gm_clk_cls, gm_clk_acc, time_src;
+ uint16_t origin_cur_utc, gm_clk_var, steps_removed;
+ uint64_t gm_clock_id;
+ uint64_t secs;
+ uint32_t nsecs;
+
+ ND_PRINT(", %s :", p_origin_ts);
+ /* sec time stamp 6 bytes */
+ secs = GET_BE_U_6(bp);
+ ND_PRINT(" %"PRIu64" seconds", secs);
+ *len -= 6;
+ bp += 6;
+
+ /* NS time stamp 4 bytes */
+ nsecs = GET_BE_U_4(bp);
+ ND_PRINT(" %u nanoseconds", nsecs);
+ *len -= 4;
+ bp += 4;
+
+ /* origin cur utc */
+ origin_cur_utc = GET_BE_U_2(bp);
+ ND_PRINT(", origin cur utc :%u", origin_cur_utc);
+ *len -= 2;
+ bp += 2;
+
+ /* rsvd */
+ rsvd = GET_U_1(bp);
+ ND_PRINT(", rsvd : %u", rsvd);
+ *len -= 1;
+ bp += 1;
+
+ /* gm prio */
+ gm_prio_1 = GET_U_1(bp);
+ ND_PRINT(", gm priority_1 : %u", gm_prio_1);
+ *len -= 1;
+ bp += 1;
+
+ /* GM clock class */
+ gm_clk_cls = GET_U_1(bp);
+ ND_PRINT(", gm clock class : %u", gm_clk_cls);
+ *len -= 1;
+ bp += 1;
+ /* GM clock accuracy */
+ gm_clk_acc = GET_U_1(bp);
+ ND_PRINT(", gm clock accuracy : %u", gm_clk_acc);
+ *len -= 1;
+ bp += 1;
+ /* GM clock variance */
+ gm_clk_var = GET_BE_U_2(bp);
+ ND_PRINT(", gm clock variance : %u", gm_clk_var);
+ *len -= 2;
+ bp += 2;
+ /* GM Prio 2 */
+ gm_prio_2 = GET_U_1(bp);
+ ND_PRINT(", gm priority_2 : %u", gm_prio_2);
+ *len -= 1;
+ bp += 1;
+
+ /* GM Clock Identity */
+ gm_clock_id = GET_BE_U_8(bp);
+ ND_PRINT(", gm clock id : 0x%"PRIx64, gm_clock_id);
+ *len -= 8;
+ bp += 8;
+ /* steps removed */
+ steps_removed = GET_BE_U_2(bp);
+ ND_PRINT(", steps removed : %u", steps_removed);
+ *len -= 2;
+ bp += 2;
+ /* Time source */
+ time_src = GET_U_1(bp);
+ ND_PRINT(", time source : 0x%x", time_src);
+ *len -= 1;
+ bp += 1;
+
+}
+static void
+ptp_print_port_id(netdissect_options *ndo, const u_char *bp, u_int *len)
+{
+ uint16_t port_id;
+ uint64_t port_identity;
+
+ /* port identity*/
+ port_identity = GET_BE_U_8(bp);
+ ND_PRINT(", port identity : 0x%"PRIx64, port_identity);
+ *len -= 8;
+ bp += 8;
+
+ /* port id */
+ port_id = GET_BE_U_2(bp);
+ ND_PRINT(", port id : %u", port_id);
+ *len -= 2;
+ bp += 2;
+
+}
+
+static void
+ptp_print_mgmt_msg(netdissect_options *ndo, const u_char *bp, u_int *len)
+{
+ ptp_print_port_id(ndo, bp, len);
+ print_field(ndo, ", start boundary hops ", PTP_UCHAR_LEN, bp, len, PTP_FALSE);
+ print_field(ndo, ", boundary hops ", PTP_UCHAR_LEN, bp, len, PTP_FALSE);
+ print_field(ndo, ", flags ", PTP_UCHAR_LEN, bp, len, PTP_TRUE);
+ print_field(ndo, ", reserved ", PTP_UCHAR_LEN, bp, len, PTP_TRUE);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 01:23:06 +0000