2018-12-14 14:28:36 +08:00
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/*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code
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* distributions retain the above copyright notice and this paragraph
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* in its entirety, and (2) distributions including binary code include
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* the above copyright notice and this paragraph in its entirety in
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* the documentation or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
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* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
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* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE.
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*
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* Original code by Partha S. Ghosh (psglinux dot gmail dot com)
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*/
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/* \summary: Precision Time Protocol (PTP) printer */
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/* specification: https://standards.ieee.org/findstds/standard/1588-2008.html*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "netdissect-stdinc.h"
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#include "netdissect.h"
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#include "extract.h"
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/*
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* PTP header
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | R | |msgtype| version | Msg Len |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | domain No | rsvd1 | flag Field |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Correction NS |
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* | Correction Sub NS |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Reserved2 |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Clock Identity |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Port Identity | Sequence ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | control | log msg int |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* 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
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* 0 1 2 3
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*
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* Announce Message (msg type=0xB)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Origin Cur UTC Offset | Reserved | GM Prio 1 |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |GM Clock Class | GM Clock Accu | GM Clock Variance |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | GM Prio 2 | |
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* +-+-+-+-+-+-+-+-+ +
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* | GM Clock Identity |
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* + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | | Steps Removed | Time Source |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* 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
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* 0 1 2 3
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*
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* Sync Message (msg type=0x0)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* Delay Request Message (msg type=0x1)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Origin Time Stamp Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* Followup Message (msg type=0x8)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Precise Origin Time Stamp Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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2020-02-29 02:09:41 +08:00
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* Delay Resp Message (msg type=0x9)
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2018-12-14 14:28:36 +08:00
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Port Identity |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* PDelay Request Message (msg type=0x2)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Origin Time Stamp Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Origin Time Stamp Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Port Identity |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* PDelay Response Message (msg type=0x3)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Request receipt Time Stamp Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Requesting Port Identity |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* PDelay Resp Follow up Message (msg type=0xA)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
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* | Response Origin Time Stamp Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Nano Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Requesting Port Identity |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* Signalling Message (msg type=0xC)
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Requesting Port Identity |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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2020-02-29 02:09:41 +08:00
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* Management Message (msg type=0xD)
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2018-12-14 14:28:36 +08:00
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Requesting Port Identity |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |Start Bndry Hps| Boundary Hops | flags | Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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*/
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#define M_SYNC 0x0
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#define M_DELAY_REQ 0x1
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#define M_PDELAY_REQ 0x2
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#define M_PDELAY_RESP 0x3
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#define M_OTHER 0x5
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#define M_FOLLOW_UP 0x8
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#define M_DELAY_RESP 0x9
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#define M_PDELAY_RESP_FOLLOW_UP 0xA
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#define M_ANNOUNCE 0xB
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#define M_SIGNALLING 0xC
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#define M_MANAGEMENT 0xD
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static const struct tok ptp_msg_type[] = {
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{ M_SYNC ,"sync msg"},
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{ M_DELAY_REQ ,"delay req msg"},
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{ M_PDELAY_REQ ,"peer delay req msg"},
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{ M_PDELAY_RESP ,"peer delay resp msg"},
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{ M_OTHER, "Other"},
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{ M_FOLLOW_UP ,"follow up msg"},
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{ M_DELAY_RESP ,"delay resp msg"},
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{ M_PDELAY_RESP_FOLLOW_UP ,"pdelay resp fup msg"},
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{ M_ANNOUNCE ,"announce msg"},
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{ M_SIGNALLING ,"signalling msg"},
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{ M_MANAGEMENT ,"management msg"},
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{ 0, NULL}
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};
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#define PTP_TRUE 1
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#define PTP_FALSE !PTP_TRUE
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#define PTP_HDR_LEN 0x22
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/* mask based on the first byte */
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#define PTP_VERS_MASK 0xFF
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#define PTP_V1_COMPAT 0x10
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#define PTP_MSG_TYPE_MASK 0x0F
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/*mask based 2byte */
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#define PTP_DOMAIN_MASK 0xFF00
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#define PTP_RSVD1_MASK 0xFF
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#define PTP_CONTROL_MASK 0xFF
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#define PTP_LOGMSG_MASK 0xFF
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/* mask based on the flags 2 bytes */
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#define PTP_L161_MASK 0x1
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#define PTP_L1_59_MASK 0x2
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#define PTP_UTC_REASONABLE_MASK 0x4
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#define PTP_TIMESCALE_MASK 0x8
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#define PTP_TIME_TRACABLE_MASK 0x10
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#define PTP_FREQUENCY_TRACABLE_MASK 0x20
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#define PTP_ALTERNATE_MASTER_MASK 0x100
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#define PTP_TWO_STEP_MASK 0x200
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#define PTP_UNICAST_MASK 0x400
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#define PTP_PROFILE_SPEC_1_MASK 0x1000
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#define PTP_PROFILE_SPEC_2_MASK 0x2000
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#define PTP_SECURITY_MASK 0x4000
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#define PTP_FLAGS_UNKNOWN_MASK 0x18C0
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static const struct tok ptp_flag_values[] = {
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{ PTP_L161_MASK ,"l1 61"},
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{ PTP_L1_59_MASK ,"l1 59"},
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{ PTP_UTC_REASONABLE_MASK ,"utc reasonable"},
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{ PTP_TIMESCALE_MASK ,"timescale"},
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{ PTP_TIME_TRACABLE_MASK ,"time tracable"},
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{ PTP_FREQUENCY_TRACABLE_MASK ,"frequency tracable"},
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{ PTP_ALTERNATE_MASTER_MASK ,"alternate master"},
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{ PTP_TWO_STEP_MASK ,"two step"},
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{ PTP_UNICAST_MASK ,"unicast"},
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{ PTP_PROFILE_SPEC_1_MASK ,"profile specific 1"},
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{ PTP_PROFILE_SPEC_2_MASK ,"profile specific 2"},
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{ PTP_SECURITY_MASK ,"security mask"},
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{ PTP_FLAGS_UNKNOWN_MASK , "unknown"},
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{0, NULL}
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};
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#define PTP_PRINT_MSG_TYPE(e) \
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{ \
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ND_PRINT("(%s)", tok2str(ptp_msg_type, "unknown", e)); \
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}
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2020-05-30 05:41:45 +08:00
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static const char *p_porigin_ts = "preciseOriginTimeStamp";
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static const char *p_origin_ts = "originTimeStamp";
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static const char *p_recv_ts = "receiveTimeStamp";
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2018-12-14 14:28:36 +08:00
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#define PTP_VER_1 0x1
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#define PTP_VER_2 0x2
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#define PTP_UCHAR_LEN sizeof(uint8_t)
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#define PTP_UINT16_LEN sizeof(uint16_t)
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#define PTP_UINT32_LEN sizeof(uint32_t)
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#define PTP_6BYTES_LEN sizeof(uint32_t)+sizeof(uint16_t)
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#define PTP_UINT64_LEN sizeof(uint64_t)
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static void ptp_print_1(netdissect_options *ndo);
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static void ptp_print_2(netdissect_options *ndo, const u_char *bp, u_int len);
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static void ptp_print_timestamp(netdissect_options *ndo, const u_char *bp, u_int *len, const char *stype);
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static void ptp_print_timestamp_identity(netdissect_options *ndo, const u_char *bp, u_int *len, const char *ttype);
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static void ptp_print_announce_msg(netdissect_options *ndo, const u_char *bp, u_int *len);
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static void ptp_print_port_id(netdissect_options *ndo, const u_char *bp, u_int *len);
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static void ptp_print_mgmt_msg(netdissect_options *ndo, const u_char *bp, u_int *len);
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static void
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print_field(netdissect_options *ndo, const char *st, uint32_t flen,
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const u_char *bp, u_int *len, uint8_t hex)
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{
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uint8_t u8_val;
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uint16_t u16_val;
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uint32_t u32_val;
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uint64_t u64_val;
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switch(flen) {
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case PTP_UCHAR_LEN:
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u8_val = GET_U_1(bp);
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ND_PRINT(", %s", st);
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if (hex)
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ND_PRINT(" 0x%x", u8_val);
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else
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ND_PRINT(" %u", u8_val);
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*len -= 1; bp += 1;
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break;
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case PTP_UINT16_LEN:
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u16_val = GET_BE_U_2(bp);
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ND_PRINT(", %s", st);
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if (hex)
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ND_PRINT(" 0x%x", u16_val);
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else
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ND_PRINT(" %u", u16_val);
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*len -= 2; bp += 2;
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break;
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case PTP_UINT32_LEN:
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u32_val = GET_BE_U_4(bp);
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ND_PRINT(", %s", st);
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if (hex)
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ND_PRINT(" 0x%x", u32_val);
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else
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ND_PRINT(" %u", u32_val);
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*len -= 4; bp += 4;
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break;
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|
|
|
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)
|
|
|
|
{
|
2020-02-29 21:54:06 +08:00
|
|
|
ND_PRINT(" (not implemented)");
|
2018-12-14 14:28:36 +08:00
|
|
|
}
|
|
|
|
|
2020-05-30 05:41:45 +08:00
|
|
|
static void
|
|
|
|
ptp_print_2(netdissect_options *ndo, const u_char *bp, u_int length)
|
2018-12-14 14:28:36 +08:00
|
|
|
{
|
|
|
|
u_int len = length;
|
2020-02-29 01:21:59 +08:00
|
|
|
uint16_t msg_len, flags, port_id, seq_id;
|
|
|
|
uint8_t foct, domain_no, msg_type, v1_compat, rsvd1, lm_int, control;
|
2018-12-14 14:28:36 +08:00
|
|
|
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 */
|
2020-04-21 01:44:37 +08:00
|
|
|
len -= 2; bp += 2; domain_no = (GET_BE_U_2(bp) & PTP_DOMAIN_MASK) >> 8; ND_PRINT(", domain : %u", domain_no);
|
2018-12-14 14:28:36 +08:00
|
|
|
|
|
|
|
/* 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 */
|
2020-02-29 02:09:41 +08:00
|
|
|
len -= 4; bp += 4; rsvd2 = GET_BE_U_4(bp); ND_PRINT(", reserved2 : %u", rsvd2);
|
2018-12-14 14:28:36 +08:00
|
|
|
|
|
|
|
/* 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
|
2021-02-01 20:44:21 +08:00
|
|
|
ptp_print(netdissect_options *ndo, const u_char *bp, u_int length)
|
2018-12-14 14:28:36 +08:00
|
|
|
{
|
|
|
|
u_int vers;
|
|
|
|
|
|
|
|
ndo->ndo_protocol = "ptp";
|
2021-02-01 20:44:21 +08:00
|
|
|
ND_LCHECK_U(length, PTP_HDR_LEN);
|
2018-12-14 14:28:36 +08:00
|
|
|
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:
|
2021-02-01 20:44:21 +08:00
|
|
|
ptp_print_2(ndo, bp, length);
|
2018-12-14 14:28:36 +08:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
//ND_PRINT("ERROR: unknown-version\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
|
2021-02-01 20:44:21 +08:00
|
|
|
invalid:
|
|
|
|
nd_print_invalid(ndo);
|
2018-12-14 14:28:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ptp_print_timestamp(netdissect_options *ndo, const u_char *bp, u_int *len, const char *stype)
|
|
|
|
{
|
|
|
|
uint64_t secs;
|
|
|
|
uint32_t nsecs;
|
|
|
|
|
2020-02-29 02:09:41 +08:00
|
|
|
ND_PRINT(", %s :", stype);
|
2018-12-14 14:28:36 +08:00
|
|
|
/* sec time stamp 6 bytes */
|
2020-03-30 21:01:28 +08:00
|
|
|
secs = GET_BE_U_6(bp);
|
2018-12-14 14:28:36 +08:00
|
|
|
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;
|
|
|
|
|
2020-02-29 02:09:41 +08:00
|
|
|
ND_PRINT(", %s :", ttype);
|
2018-12-14 14:28:36 +08:00
|
|
|
/* sec time stamp 6 bytes */
|
2020-03-30 21:01:28 +08:00
|
|
|
secs = GET_BE_U_6(bp);
|
2018-12-14 14:28:36 +08:00
|
|
|
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;
|
|
|
|
|
2020-02-29 02:09:41 +08:00
|
|
|
ND_PRINT(", %s :", p_origin_ts);
|
2018-12-14 14:28:36 +08:00
|
|
|
/* sec time stamp 6 bytes */
|
2020-03-30 21:01:28 +08:00
|
|
|
secs = GET_BE_U_6(bp);
|
2018-12-14 14:28:36 +08:00
|
|
|
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);
|
|
|
|
}
|