| /* |
| * 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 | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| */ |
| |
| #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_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_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"}, |
| { 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} |
| }; |
| |
| #define PTP_PRINT_MSG_TYPE(e) \ |
| { \ |
| ND_PRINT("(%s)", tok2str(ptp_msg_type, "unknown", e)); \ |
| } |
| |
| 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; |
| uint32_t ns_corr, sns_corr, 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)); |
| |
| /* 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 */ |
| len -= 2; bp += 2; ns_corr = GET_BE_U_4(bp); ND_PRINT(", NS correction : %u", ns_corr); |
| |
| /* correction sub NS */ |
| len -= 4; bp += 4; sns_corr = GET_BE_U_4(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); |
| |
| /* 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_msg_type, "none", 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 len) |
| { |
| u_int vers; |
| |
| ndo->ndo_protocol = "ptp"; |
| if (len < PTP_HDR_LEN) { |
| goto trunc; |
| } |
| 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, len); |
| break; |
| default: |
| //ND_PRINT("ERROR: unknown-version\n"); |
| break; |
| } |
| return; |
| |
| trunc: |
| nd_print_trunc(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); |
| } |
