2005-05-29 18:17:16 +00:00
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/* $Header: /tcpdump/master/tcpdump/ntp.h,v 1.8 2004/01/28 14:34:50 hannes Exp $ */
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1996-08-19 20:34:12 +00:00
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/*
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* Based on ntp.h from the U of MD implementation
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* This file is based on Version 2 of the NTP spec (RFC1119).
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*/
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/*
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* Definitions for the masses
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*/
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2004-03-31 09:17:26 +00:00
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#define JAN_1970 2208988800U /* 1970 - 1900 in seconds */
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1996-08-19 20:34:12 +00:00
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/*
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* Structure definitions for NTP fixed point values
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*
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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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* | Integer Part |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Fraction Part |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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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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* | Integer Part | Fraction Part |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct l_fixedpt {
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u_int32_t int_part;
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u_int32_t fraction;
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};
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struct s_fixedpt {
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2001-04-03 07:45:48 +00:00
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u_int16_t int_part;
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u_int16_t fraction;
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1996-08-19 20:34:12 +00:00
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};
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2005-05-29 18:17:16 +00:00
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/* rfc2030
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* 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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* |LI | VN |Mode | Stratum | Poll | Precision |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Root Delay |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Root Dispersion |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Reference Identifier |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* | Reference Timestamp (64) |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* | Originate Timestamp (64) |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* | Receive Timestamp (64) |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* | Transmit Timestamp (64) |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Key Identifier (optional) (32) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* | |
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* | Message Digest (optional) (128) |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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1996-08-19 20:34:12 +00:00
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struct ntpdata {
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u_char status; /* status of local clock and leap info */
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u_char stratum; /* Stratum level */
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u_char ppoll; /* poll value */
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int precision:8;
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2005-05-29 18:17:16 +00:00
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struct s_fixedpt root_delay;
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struct s_fixedpt root_dispersion;
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1996-08-19 20:34:12 +00:00
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u_int32_t refid;
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2005-05-29 18:17:16 +00:00
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struct l_fixedpt ref_timestamp;
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struct l_fixedpt org_timestamp;
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struct l_fixedpt rec_timestamp;
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struct l_fixedpt xmt_timestamp;
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u_int32_t key_id;
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u_int8_t message_digest[16];
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1996-08-19 20:34:12 +00:00
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};
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/*
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* Leap Second Codes (high order two bits)
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*/
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#define NO_WARNING 0x00 /* no warning */
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#define PLUS_SEC 0x40 /* add a second (61 seconds) */
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#define MINUS_SEC 0x80 /* minus a second (59 seconds) */
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#define ALARM 0xc0 /* alarm condition (clock unsynchronized) */
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/*
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* Clock Status Bits that Encode Version
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*/
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#define NTPVERSION_1 0x08
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#define VERSIONMASK 0x38
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#define LEAPMASK 0xc0
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#define MODEMASK 0x07
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/*
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* Code values
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*/
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#define MODE_UNSPEC 0 /* unspecified */
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#define MODE_SYM_ACT 1 /* symmetric active */
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#define MODE_SYM_PAS 2 /* symmetric passive */
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#define MODE_CLIENT 3 /* client */
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#define MODE_SERVER 4 /* server */
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#define MODE_BROADCAST 5 /* broadcast */
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#define MODE_RES1 6 /* reserved */
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#define MODE_RES2 7 /* reserved */
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/*
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* Stratum Definitions
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*/
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#define UNSPECIFIED 0
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#define PRIM_REF 1 /* radio clock */
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#define INFO_QUERY 62 /* **** THIS implementation dependent **** */
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#define INFO_REPLY 63 /* **** THIS implementation dependent **** */
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