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freebsd-dev/contrib/ntp/include/ntp.h
Ollivier Robert a151a66c2a Virgin import of ntpd 4.0.99b
2000-01-28 14:55:50 +00:00

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/*
* ntp.h - NTP definitions for the masses
*/
#ifndef NTP_H
#define NTP_H
#include "ntp_types.h"
#include <math.h>
/* common definitions for Y2K repairs [ Y2KFixes */
/* (this might better be put in ntp_calendar.h) */
#define YEAR_BREAK 500 /* assume years < this are tm_year values: */
/* Break < AnyFourDigitYear
&& Break > Anytm_yearYear */
#define YEAR_PIVOT 98 /* 97/98: assume years < this are year 2000+ */
/* FYI: official UNIX pivot year is 68/69 */
/* Number of Days since (mythical) 1.BC Gregorian to 1 January of given year*/
#define julian0(year) \
( \
( (year) * 365 ) + ( (year) > 0 \
? ( ((year)+3) / 4 - ((year-1) / 100) + ((year-1) / 400) ) \
: 0 ) \
)
/* Number of days since start of NTP time to 1 January of given year */
#define ntp0(year) ( julian0(year) - julian0(1900) )
/* Number of days since start of UNIX time to 1 January of given year */
#define unix0(year) ( julian0(year) - julian0(1970) )
/* LEAP YEAR test for full 4-digit years (e.g, 1999, 2010) */
#define isleap_4(y) /* a TRUE and PROPER leap year test */ \
((y)%4 == 0 && !((y)%100 == 0 && !(y%400 == 0)))
/* NOTE: year 2000 TRULY IS A LEAP YEAR!!! */
/* LEAP YEAR test for tm_year (struct tm) years (e.g, 99, 110) */
#define isleap_tm(y) /* a TRUE and PROPER leap year test */ \
((y)%4 == 0 && !((y)%100 == 0 && !(((y)+1900)%400 == 0)))
/* to convert simple two-digit years to tm_year style years:
if ( year < YEAR_PIVOT ) year += 100;
* to convert either two-digit OR tm_year years to four-digit years:
if ( year < YEAR_PIVOT ) year += 100;
if ( year < YEAR_BREAK ) year += 1900;
CALL TO STANDARD:
* As the Internet is an INTERNATIONAL network, it makes SENSE to use
the international standard ISO 8601 to format dates and times.
Basically this is yyyy-mm-dd for years and hh:mm:ss for times
(joining the two togeather in computer readable media calls for
yyyy-mm-ddThh:mm:ss, though yyyy-mm-dd hh:mm:ss is often used
for human readable forms even though it is not not strictly
valid ISO 8601). Standard time-zone offsets ([+-]hh:mm) are allowed.
ghealton ] Y2KFixes */
/*
* How to get signed characters. On machines where signed char works,
* use it. On machines where signed char doesn't work, char had better
* be signed.
*/
#ifdef NEED_S_CHAR_TYPEDEF
# if SIZEOF_SIGNED_CHAR
typedef signed char s_char;
# else
typedef char s_char;
# endif
/* XXX: Why is this sequent bit INSIDE this test? */
# ifdef sequent
# undef SO_RCVBUF
# undef SO_SNDBUF
# endif
#endif
#ifndef TRUE
# define TRUE 1
#endif /* TRUE */
#ifndef FALSE
# define FALSE 0
#endif /* FALSE */
/*
* NTP protocol parameters. See section 3.2.6 of the specification.
*/
#define NTP_VERSION ((u_char)4) /* current version number */
#define NTP_OLDVERSION ((u_char)1) /* oldest credible version */
#define NTP_PORT 123 /* included for sake of non-unix machines */
#define NTP_MAXSTRATUM ((u_char)15) /* max stratum, infinity a la Bellman-Ford */
#define NTP_MAXAGE 86400 /* one day in seconds */
#define NTP_UNREACH 16 /* poll interval backoff count */
#define NTP_MINDPOLL 6 /* log2 default min poll interval (64 s) */
#define NTP_MAXDPOLL 10 /* log2 default max poll interval (~17 m) */
#define NTP_MINPOLL 4 /* log2 min poll interval (16 s) */
#define NTP_MAXPOLL 17 /* log2 max poll interval (~4.5 h) */
#define NTP_MINCLOCK 3 /* minimum survivors */
#define NTP_CANCLOCK 6 /* minimum candidates */
#define NTP_MAXCLOCK 10 /* maximum candidates */
#define NTP_WINDOW 8 /* reachability register size */
#define NTP_SHIFT 8 /* 8 suitable for crystal time base */
#define NTP_MAXKEY 65535 /* maximum authentication key number */
#define NTP_MAXSESSION 100 /* maximum entries on session key list */
#define NTP_AUTOMAX 12 /* log2 default max session key lifetime */
#define KEY_REVOKE 16 /* log2 default key revoke timeout */
#define NTP_FWEIGHT .5 /* clock filter weight */
#define NTP_SWEIGHT .75 /* select weight */
#define CLOCK_SGATE 10. /* popcorn spike gate */
#define BURST_INTERVAL1 4 /* first interburst interval (log2) */
#define BURST_INTERVAL2 1 /* succeeding interburst intervals (log2) */
/*
* Operations for jitter (variance) calculations (these use doubles).
* Note that we carefully separate the jitter component from the dispersion
* component (frequency error plus precision). The frequency error
* component is computed as CLOCK_PHI times the difference between the epoch
* of the time measurement and the reference time. The precision componen
* is computed as the square root of the mean of the squares of a zero-
* mean, uniform distribution of unit maximum amplitude. Whether this
* makes statistical sense may be arguable.
*/
#define SQUARE(x) ((x) * (x))
#define SQRT(x) (sqrt(x))
#define DIFF(x, y) (SQUARE((x) - (y)))
#define LOGTOD(a) ((a) < 0 ? 1. / (1L << -(a)) : \
1L << (int)(a)) /* log2 to double */
#define UNIVAR(x) (SQUARE(.28867513 * LOGTOD(x))) /* std uniform distr */
#define ULOGTOD(a) (1L << (int)(a)) /* ulog2 to double */
#define MAXDISPERSE 16. /* max dispersion (square) */
#define MINDISPERSE .01 /* min dispersion */
#define MAXDISTANCE 1. /* max root distance */
/*
* Loop filter parameters. See section 5.1 of the specification.
*
* Note that these are appropriate for a crystal time base. If your
* system clock is line frequency controlled you should read the
* specification for appropriate modifications.
*/
#define CLOCK_PHI 15e-6 /* max frequency wander */
#define EVENT_TIMEOUT 0 /* one second, that is */
/*
* The interface structure is used to hold the addresses and socket
* numbers of each of the interfaces we are using.
*/
struct interface {
int fd; /* socket this is opened on */
int bfd; /* socket for receiving broadcasts */
struct sockaddr_in sin; /* interface address */
struct sockaddr_in bcast; /* broadcast address */
struct sockaddr_in mask; /* interface mask */
char name[8]; /* name of interface */
int flags; /* interface flags */
int last_ttl; /* last TTL specified */
volatile long received; /* number of incoming packets */
long sent; /* number of outgoing packets */
long notsent; /* number of send failures */
};
/*
* Flags for interfaces
*/
#define INT_BROADCAST 1 /* can broadcast out this interface */
#define INT_BCASTOPEN 2 /* broadcast socket is open */
#define INT_LOOPBACK 4 /* the loopback interface */
#define INT_MULTICAST 8 /* multicasting enabled */
/*
* Define flasher bits (tests 1 through 8 in packet procedure)
* These reveal the state at the last grumble from the peer and are
* most handy for diagnosing problems, even if not strictly a state
* variable in the spec. These are recorded in the peer structure.
*/
#define TEST1 0x0001 /* duplicate packet received */
#define TEST2 0x0002 /* bogus packet received */
#define TEST3 0x0004 /* protocol unsynchronized */
#define TEST4 0x0008 /* peer delay/dispersion bounds check */
#define TEST5 0x0010 /* peer authentication failed */
#define TEST6 0x0020 /* peer clock unsynchronized */
#define TEST7 0x0040 /* peer stratum out of bounds */
#define TEST8 0x0080 /* root delay/dispersion bounds check */
#define TEST9 0x0100 /* peer not authenticated */
#define TEST10 0x0200 /* access denied */
/*
* The peer structure. Holds state information relating to the guys
* we are peering with. Most of this stuff is from section 3.2 of the
* spec.
*/
struct peer {
struct peer *next;
struct peer *ass_next; /* link pointer in associd hash */
struct sockaddr_in srcadr; /* address of remote host */
struct interface *dstadr; /* pointer to address on local host */
struct refclockproc *procptr; /* pointer to reference clock stuff */
u_char leap; /* leap indicator */
u_char hmode; /* association mode with this peer */
u_char pmode; /* peer's association mode */
u_char stratum; /* stratum of remote peer */
s_char precision; /* peer's clock precision */
u_char ppoll; /* peer poll interval */
u_char hpoll; /* local host poll interval */
u_char minpoll; /* min local host poll interval */
u_char maxpoll; /* max local host poll interval */
u_char burst; /* packets remaining in burst */
u_char version; /* version number */
u_int flags; /* peer flags */
u_char cast_flags; /* flags MDF_?CAST */
u_int flash; /* protocol error tally bits */
u_char refclktype; /* reference clock type */
u_char refclkunit; /* reference clock unit number */
u_char sstclktype; /* clock type for system status word */
u_int32 refid; /* peer reference ID */
l_fp reftime; /* update epoch */
u_long keyid; /* current key ID */
u_long pkeyid; /* previous key ID (autokey) */
u_long *keylist; /* session key identifier list */
int keynumber; /* session key identifier number */
u_short associd; /* association ID, a unique integer */
u_char ttl; /* time to live (multicast) */
/* **Start of clear-to-zero area.*** */
/* Everything that is cleared to zero goes below here */
u_char valid; /* valid counter */
#define clear_to_zero valid
double estbdelay; /* broadcast offset */
u_char status; /* peer status */
u_char pollsw; /* what it says */
u_char reach; /* reachability, NTP_WINDOW bits */
u_char unreach; /* unreachable count */
u_short filter_nextpt; /* index into filter shift register */
double filter_delay[NTP_SHIFT]; /* delay part of shift register */
double filter_offset[NTP_SHIFT]; /* offset part of shift register */
double filter_disp[NTP_SHIFT]; /* dispersion part of shift register */
u_long filter_epoch[NTP_SHIFT]; /* epoch part of shift register */
u_char filter_order[NTP_SHIFT]; /* we keep the filter sorted here */
l_fp org; /* originate time stamp */
l_fp rec; /* receive time stamp */
l_fp xmt; /* transmit time stamp */
double offset; /* peer clock offset */
double delay; /* peer roundtrip delay */
double variance; /* peer variance (jitter) */
double disp; /* peer dispersion */
double rootdelay; /* roundtrip delay to primary clock */
double rootdispersion; /* dispersion to primary clock */
u_long epoch; /* reference epoch */
/* ***End of clear-to-zero area.*** */
/* Everything that is cleared to zero goes above here */
u_long update; /* receive epoch */
#define end_clear_to_zero update
u_long outdate; /* send time last packet */
u_long nextdate; /* send time next packet */
u_long nextaction; /* peer local activity timeout (refclocks mainly) */
void (*action) P((struct peer *));/* action timeout function */
/*
* statistic counters
*/
u_long timereset; /* time stat counters were reset */
u_long sent; /* number of updates sent */
u_long received; /* number of frames received */
u_long timereceived; /* last time a frame received */
u_long timereachable; /* last reachable/unreachable event */
u_long processed; /* processed by the protocol */
u_long badauth; /* bad credentials detected */
u_long bogusorg; /* rejected due to bogus origin */
u_long oldpkt; /* rejected as duplicate packet */
u_long seldisptoolarge; /* too much dispersion for selection */
u_long selbroken; /* broken NTP detected in selection */
u_long seltooold; /* too long since sync in selection */
u_char last_event; /* set to code for last peer error */
u_char num_events; /* num. of events which have occurred */
};
/*
* Values for peer.leap, sys_leap
*/
#define LEAP_NOWARNING 0x0 /* normal, no leap second warning */
#define LEAP_ADDSECOND 0x1 /* last minute of day has 61 seconds */
#define LEAP_DELSECOND 0x2 /* last minute of day has 59 seconds */
#define LEAP_NOTINSYNC 0x3 /* overload, clock is free running */
/*
* Values for peer.mode
*/
#define MODE_UNSPEC 0 /* unspecified (probably old NTP version) */
#define MODE_ACTIVE 1 /* symmetric active */
#define MODE_PASSIVE 2 /* symmetric passive */
#define MODE_CLIENT 3 /* client mode */
#define MODE_SERVER 4 /* server mode */
#define MODE_BROADCAST 5 /* broadcast mode */
#define MODE_CONTROL 6 /* control mode packet */
#define MODE_PRIVATE 7 /* implementation defined function */
#define MODE_BCLIENT 8 /* a pseudo mode, used internally */
#define MODE_MCLIENT 9 /* multicast mode, used internally */
/*
* Values for peer.stratum, sys_stratum
*/
#define STRATUM_REFCLOCK ((u_char)0) /* stratum claimed by primary clock */
#define STRATUM_PRIMARY ((u_char)1) /* host has a primary clock */
#define STRATUM_INFIN ((u_char)NTP_MAXSTRATUM) /* infinity a la Bellman-Ford */
/* A stratum of 0 in the packet is mapped to 16 internally */
#define STRATUM_PKT_UNSPEC ((u_char)0) /* unspecified in packet */
#define STRATUM_UNSPEC ((u_char)(NTP_MAXSTRATUM+(u_char)1)) /* unspecified */
/*
* Values for peer.flags
*/
#define FLAG_CONFIG 0x1 /* association was configured */
#define FLAG_AUTHENABLE 0x2 /* this guy needs authentication */
#define FLAG_MCAST1 0x4 /* multicast client/server mode */
#define FLAG_MCAST2 0x8 /* multicast client mode */
#define FLAG_AUTHENTIC 0x10 /* last message was authentic */
#define FLAG_REFCLOCK 0x20 /* this is actually a reference clock */
#define FLAG_SYSPEER 0x40 /* this is one of the selected peers */
#define FLAG_PREFER 0x80 /* this is the preferred peer */
#define FLAG_BURST 0x100 /* burst mode */
#define FLAG_SKEY 0x200 /* autokey authentication */
#define FLAG_NOSELECT 0x400 /* this is a "noselect" peer */
/*
* Definitions for the clear() routine. We use memset() to clear
* the parts of the peer structure which go to zero. These are
* used to calculate the start address and length of the area.
*/
#define CLEAR_TO_ZERO(p) ((char *)&((p)->clear_to_zero))
#define END_CLEAR_TO_ZERO(p) ((char *)&((p)->end_clear_to_zero))
#define LEN_CLEAR_TO_ZERO (END_CLEAR_TO_ZERO((struct peer *)0) \
- CLEAR_TO_ZERO((struct peer *)0))
/*
* Reference clock identifiers (for pps signal)
*/
#define PPSREFID (u_int32)"PPS " /* used when pps controls stratum>1 */
/*
* Reference clock types. Added as necessary.
*/
#define REFCLK_NONE 0 /* unknown or missing */
#define REFCLK_LOCALCLOCK 1 /* external (e.g., lockclock) */
#define REFCLK_GPS_TRAK 2 /* TRAK 8810 GPS Receiver */
#define REFCLK_WWV_PST 3 /* PST/Traconex 1020 WWV/H */
#define REFCLK_SPECTRACOM 4 /* Spectracom (generic) Receivers */
#define REFCLK_TRUETIME 5 /* TrueTime (generic) Receivers */
#define REFCLK_IRIG_AUDIO 6 /* IRIG-B/W audio decoder */
#define REFCLK_CHU_AUDIO 7 /* CHU audio demodulator/decoder */
#define REFCLK_PARSE 8 /* generic driver (usually DCF77,GPS,MSF) */
#define REFCLK_GPS_MX4200 9 /* Magnavox MX4200 GPS */
#define REFCLK_GPS_AS2201 10 /* Austron 2201A GPS */
#define REFCLK_GPS_ARBITER 11 /* Arbiter 1088A/B/ GPS */
#define REFCLK_IRIG_TPRO 12 /* KSI/Odetics TPRO-S IRIG */
#define REFCLK_ATOM_LEITCH 13 /* Leitch CSD 5300 Master Clock */
#define REFCLK_MSF_EES 14 /* EES M201 MSF Receiver */
#define REFCLK_GPSTM_TRUE 15 /* OLD TrueTime GPS/TM-TMD Receiver */
#define REFCLK_IRIG_BANCOMM 16 /* Bancomm GPS/IRIG Interface */
#define REFCLK_GPS_DATUM 17 /* Datum Programmable Time System */
#define REFCLK_NIST_ACTS 18 /* NIST Auto Computer Time Service */
#define REFCLK_WWV_HEATH 19 /* Heath GC1000 WWV/WWVH Receiver */
#define REFCLK_GPS_NMEA 20 /* NMEA based GPS clock */
#define REFCLK_GPS_VME 21 /* TrueTime GPS-VME Interface */
#define REFCLK_ATOM_PPS 22 /* 1-PPS Clock Discipline */
#define REFCLK_PTB_ACTS 23 /* PTB Auto Computer Time Service */
#define REFCLK_USNO 24 /* Naval Observatory dialup */
#define REFCLK_GPS_HP 26 /* HP 58503A Time/Frequency Receiver */
#define REFCLK_ARCRON_MSF 27 /* ARCRON MSF radio clock. */
#define REFCLK_SHM 28 /* clock attached thru shared memory */
#define REFCLK_PALISADE 29 /* Trimble Navigation Palisade GPS */
#define REFCLK_ONCORE 30 /* Motorola UT Oncore GPS */
#define REFCLK_GPS_JUPITER 31 /* Rockwell Jupiter GPS receiver */
#define REFCLK_CHRONOLOG 32 /* Chrono-log K WWVB receiver */
#define REFCLK_DUMBCLOCK 33 /* Dumb localtime clock */
#define REFCLK_ULINK 34 /* Ultralink M320 WWVB receiver */
#define REFCLK_PCF 35 /* Conrad parallel port radio clock */
#define REFCLK_WWV_AUDIO 36 /* WWV/H audio demodulator/decoder */
#define REFCLK_FG 37 /* Forum Graphic GPS */
#define REFCLK_MAX 37 /* Grow as needed... */
/*
* We tell reference clocks from real peers by giving the reference
* clocks an address of the form 127.127.t.u, where t is the type and
* u is the unit number. We define some of this here since we will need
* some sanity checks to make sure this address isn't interpretted as
* that of a normal peer.
*/
#define REFCLOCK_ADDR 0x7f7f0000 /* 127.127.0.0 */
#define REFCLOCK_MASK 0xffff0000 /* 255.255.0.0 */
#define ISREFCLOCKADR(srcadr) ((SRCADR(srcadr) & REFCLOCK_MASK) \
== REFCLOCK_ADDR)
/*
* Macro for checking for invalid addresses. This is really, really
* gross, but is needed so no one configures a host on net 127 now that
* we're encouraging it the the configuration file.
*/
#define LOOPBACKADR 0x7f000001
#define LOOPNETMASK 0xff000000
#define ISBADADR(srcadr) (((SRCADR(srcadr) & LOOPNETMASK) \
== (LOOPBACKADR & LOOPNETMASK)) \
&& (SRCADR(srcadr) != LOOPBACKADR))
/*
* Utilities for manipulating addresses and port numbers
*/
#define NSRCADR(src) ((src)->sin_addr.s_addr) /* address in net byte order */
#define NSRCPORT(src) ((src)->sin_port) /* port in net byte order */
#define SRCADR(src) (ntohl(NSRCADR((src)))) /* address in host byte order */
#define SRCPORT(src) (ntohs(NSRCPORT((src)))) /* host port */
/*
* NTP packet format. The mac field is optional. It isn't really
* an l_fp either, but for now declaring it that way is convenient.
* See Appendix A in the specification.
*
* Note that all u_fp and l_fp values arrive in network byte order
* and must be converted (except the mac, which isn't, really).
*/
struct pkt {
u_char li_vn_mode; /* contains leap indicator, version and mode */
u_char stratum; /* peer's stratum */
u_char ppoll; /* the peer polling interval */
s_char precision; /* peer clock precision */
u_fp rootdelay; /* distance to primary clock */
u_fp rootdispersion; /* clock dispersion */
u_int32 refid; /* reference clock ID */
l_fp reftime; /* time peer clock was last updated */
l_fp org; /* originate time stamp */
l_fp rec; /* receive time stamp */
l_fp xmt; /* transmit time stamp */
#define MIN_MAC_LEN (sizeof(u_int32) + 8) /* DES */
#define MAX_MAC_LEN (sizeof(u_int32) + 16) /* MD5 */
/*
* The length of the packet less MAC must be a multiple of 64
* bits. For normal private-key cryptography, the cryptosum
* covers only the raw NTP header. For autokey cryptography,
* the heade is incresed by 64 bits to contain the field length
* and private value.
*/
u_int32 keyid1; /* key identifier 1 */
u_int32 keyid2; /* key identifier 2 */
u_int32 keyid3; /* key identifier 3 */
u_char mac[MAX_MAC_LEN]; /* mac */
};
/*
* Packets can come in two flavours, one with a mac and one without.
*/
#define LEN_PKT_NOMAC (sizeof(struct pkt) - MAX_MAC_LEN - 3 * sizeof(u_int32))
/*
* Minimum size of packet with a MAC: has to include at least a key number.
*/
#define LEN_PKT_MAC (LEN_PKT_NOMAC + sizeof(u_int32))
/*
* Stuff for extracting things from li_vn_mode
*/
#define PKT_MODE(li_vn_mode) ((u_char)((li_vn_mode) & 0x7))
#define PKT_VERSION(li_vn_mode) ((u_char)(((li_vn_mode) >> 3) & 0x7))
#define PKT_LEAP(li_vn_mode) ((u_char)(((li_vn_mode) >> 6) & 0x3))
/*
* Stuff for putting things back into li_vn_mode
*/
#define PKT_LI_VN_MODE(li, vn, md) \
((u_char)((((li) << 6) & 0xc0) | (((vn) << 3) & 0x38) | ((md) & 0x7)))
/*
* Dealing with stratum. 0 gets mapped to 16 incoming, and back to 0
* on output.
*/
#define PKT_TO_STRATUM(s) ((u_char)(((s) == (STRATUM_PKT_UNSPEC)) ?\
(STRATUM_UNSPEC) : (s)))
#define STRATUM_TO_PKT(s) ((u_char)(((s) == (STRATUM_UNSPEC)) ?\
(STRATUM_PKT_UNSPEC) : (s)))
/*
* Event codes. Used for reporting errors/events to the control module
*/
#define PEER_EVENT 0x80 /* this is a peer event */
#define EVNT_UNSPEC 0
#define EVNT_SYSRESTART 1
#define EVNT_SYSFAULT 2
#define EVNT_SYNCCHG 3
#define EVNT_PEERSTCHG 4
#define EVNT_CLOCKRESET 5
#define EVNT_BADDATETIM 6
#define EVNT_CLOCKEXCPT 7
#define EVNT_PEERIPERR (1|PEER_EVENT)
#define EVNT_PEERAUTH (2|PEER_EVENT)
#define EVNT_UNREACH (3|PEER_EVENT)
#define EVNT_REACH (4|PEER_EVENT)
#define EVNT_PEERCLOCK (5|PEER_EVENT)
/*
* Clock event codes
*/
#define CEVNT_NOMINAL 0
#define CEVNT_TIMEOUT 1
#define CEVNT_BADREPLY 2
#define CEVNT_FAULT 3
#define CEVNT_PROP 4
#define CEVNT_BADDATE 5
#define CEVNT_BADTIME 6
#define CEVNT_MAX CEVNT_BADTIME
/*
* Very misplaced value. Default port through which we send traps.
*/
#define TRAPPORT 18447
/*
* To speed lookups, peers are hashed by the low order bits of the remote
* IP address. These definitions relate to that.
*/
#define HASH_SIZE 32
#define HASH_MASK (HASH_SIZE-1)
#define HASH_ADDR(src) ((SRCADR((src))^(SRCADR((src))>>8)) & HASH_MASK)
/*
* How we randomize polls. The poll interval is a power of two.
* We chose a random value which is between 1/4 and 3/4 of the
* poll interval we would normally use and which is an even multiple
* of the EVENT_TIMEOUT. The random number routine, given an argument
* spread value of n, returns an integer between 0 and (1<<n)-1. This
* is shifted by EVENT_TIMEOUT and added to the base value.
*/
#if defined(HAVE_MRAND48)
#define RANDOM (mrand48())
#define SRANDOM(x) (srand48(x))
#elif defined(HAVE_RANDOM)
#define RANDOM (random())
#define SRANDOM(x) (srandom(x))
#else
#define RANDOM (0)
#define SRANDOM(x) (0)
#endif
#define RANDPOLL(x) ((1 << (x)) - 1 + (RANDOM & 0x3))
#define RANDOM_SPREAD(poll) ((poll) - (EVENT_TIMEOUT+1))
#define RANDOM_POLL(poll, rval) ((((rval)+1)<<EVENT_TIMEOUT) + (1<<((poll)-2)))
/*
* min, min3 and max. Makes it easier to transliterate the spec without
* thinking about it.
*/
#define min(a,b) (((a) < (b)) ? (a) : (b))
#define max(a,b) (((a) > (b)) ? (a) : (b))
#define min3(a,b,c) min(min((a),(b)), (c))
/*
* Configuration items. These are for the protocol module (proto_config())
*/
#define PROTO_BROADCLIENT 1
#define PROTO_PRECISION 2 /* (not used) */
#define PROTO_AUTHENTICATE 3
#define PROTO_BROADDELAY 4
#define PROTO_AUTHDELAY 5 /* (not used) */
#define PROTO_MULTICAST_ADD 6
#define PROTO_MULTICAST_DEL 7
#define PROTO_NTP 8
#define PROTO_KERNEL 9
#define PROTO_MONITOR 10
#define PROTO_FILEGEN 11
/*
* Configuration items for the loop filter
*/
#define LOOP_DRIFTINIT 1 /* set initial frequency offset */
#define LOOP_DRIFTCOMP 2 /* set frequency offset */
#define LOOP_PPSDELAY 3 /* set pps delay */
#define LOOP_PPSBAUD 4 /* set pps baud rate */
/*
* Configuration items for the stats printer
*/
#define STATS_FREQ_FILE 1 /* configure drift file */
#define STATS_STATSDIR 2 /* directory prefix for stats files */
#define STATS_PID_FILE 3 /* configure ntpd PID file */
#define MJD_1970 40587 /* MJD for 1 Jan 1970 */
/*
* Default parameters. We use these in the absence of something better.
*/
#define DEFBROADDELAY 4e-3 /* default broadcast offset */
#define INADDR_NTP 0xe0000101 /* NTP multicast address 224.0.1.1 */
/*
* Structure used optionally for monitoring when this is turned on.
*/
struct mon_data {
struct mon_data *hash_next; /* next structure in hash list */
struct mon_data *mru_next; /* next structure in MRU list */
struct mon_data *mru_prev; /* previous structure in MRU list */
struct mon_data *fifo_next; /* next structure in FIFO list */
struct mon_data *fifo_prev; /* previous structure in FIFO list */
u_long lastdrop; /* last time dropped due to RES_LIMIT*/
u_long lasttime; /* last time data updated */
u_long firsttime; /* time structure initialized */
u_long count; /* count we have seen */
u_int32 rmtadr; /* address of remote host */
struct interface *interface; /* interface on which this arrived */
u_short rmtport; /* remote port last came from */
u_char mode; /* mode of incoming packet */
u_char version; /* version of incoming packet */
u_char cast_flags; /* flags MDF_?CAST */
};
#define MDF_UCAST 0x1 /* unicast packet */
#define MDF_MCAST 0x2 /* multicast packet */
#define MDF_BCAST 0x4 /* broadcast packet */
#define MDF_LCAST 0x8 /* local packet */
#define MDF_ACAST 0x10 /* manycast packet */
/*
* Values used with mon_enabled to indicate reason for enabling monitoring
*/
#define MON_OFF 0x00 /* no monitoring */
#define MON_ON 0x01 /* monitoring explicitly enabled */
#define MON_RES 0x02 /* implicit monitoring for RES_LIMITED */
/*
* Structure used for restrictlist entries
*/
struct restrictlist {
struct restrictlist *next; /* link to next entry */
u_int32 addr; /* host address (host byte order) */
u_int32 mask; /* mask for address (host byte order) */
u_long count; /* number of packets matched */
u_short flags; /* accesslist flags */
u_short mflags; /* match flags */
};
/*
* Access flags
*/
#define RES_IGNORE 0x1 /* ignore if matched */
#define RES_DONTSERVE 0x2 /* don't give him any time */
#define RES_DONTTRUST 0x4 /* don't trust if matched */
#define RES_NOQUERY 0x8 /* don't allow queries if matched */
#define RES_NOMODIFY 0x10 /* don't allow him to modify server */
#define RES_NOPEER 0x20 /* don't allocate memory resources */
#define RES_NOTRAP 0x40 /* don't allow him to set traps */
#define RES_LPTRAP 0x80 /* traps set by him are low priority */
#define RES_LIMITED 0x100 /* limit per net number of clients */
#define RES_ALLFLAGS \
(RES_IGNORE|RES_DONTSERVE|RES_DONTTRUST|RES_NOQUERY\
|RES_NOMODIFY|RES_NOPEER|RES_NOTRAP|RES_LPTRAP|RES_LIMITED)
/*
* Match flags
*/
#define RESM_INTERFACE 0x1 /* this is an interface */
#define RESM_NTPONLY 0x2 /* match ntp port only */
/*
* Restriction configuration ops
*/
#define RESTRICT_FLAGS 1 /* add flags to restrict entry */
#define RESTRICT_UNFLAG 2 /* remove flags from restrict entry */
#define RESTRICT_REMOVE 3 /* remove a restrict entry */
/*
* Experimental alternate selection algorithm identifiers
*/
#define SELECT_1 1
#define SELECT_2 2
#define SELECT_3 3
#define SELECT_4 4
#define SELECT_5 5
/*
* Endpoint structure for the select algorithm
*/
struct endpoint {
double val; /* offset of endpoint */
int type; /* interval entry/exit */
};
/*
* Defines for association matching
*/
#define AM_MODES 10 /* total number of modes */
#define NO_PEER 0 /* action when no peer is found */
/*
* Association matching AM[] return codes
*/
#define AM_ERR -1
#define AM_NOMATCH 0
#define AM_PROCPKT 1
#define AM_FXMIT 2
#define AM_MANYCAST 3
#define AM_NEWPASS 4
#define AM_NEWBCL 5
#define AM_POSSBCL 6
/* NetInfo configuration locations */
#ifdef HAVE_NETINFO
#define NETINFO_CONFIG_DIR "/config/ntp"
#endif
#endif /* NTP_H */
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