/* * ntp_refclock.h - definitions for reference clock support */ #ifndef NTP_REFCLOCK_H #define NTP_REFCLOCK_H #include "ntp_types.h" #if defined(HAVE_BSD_TTYS) #include #endif /* HAVE_BSD_TTYS */ #if defined(HAVE_SYSV_TTYS) #include #endif /* HAVE_SYSV_TTYS */ #if defined(HAVE_TERMIOS) # ifdef TERMIOS_NEEDS__SVID3 # define _SVID3 # endif # include # ifdef TERMIOS_NEEDS__SVID3 # undef _SVID3 # endif #endif #if defined(HAVE_SYS_MODEM_H) #include #endif #if 0 /* If you need that, include ntp_io.h instead */ #if defined(STREAM) #include #if defined(CLK) /* This is never defined, except perhaps by a system header file */ #include #endif /* CLK */ #endif /* STREAM */ #endif #include "recvbuff.h" #if !defined(SYSV_TTYS) && !defined(STREAM) & !defined(BSD_TTYS) #define BSD_TTYS #endif /* SYSV_TTYS STREAM BSD_TTYS */ #define SAMPLE(x) pp->filter[pp->coderecv++ % MAXSTAGE] = (x); \ if (pp->coderecv % MAXSTAGE == pp->codeproc % MAXSTAGE) \ pp->codeproc++; /* * Macros to determine the clock type and unit numbers from a * 127.127.t.u address */ #define REFCLOCKTYPE(srcadr) ((SRCADR(srcadr) >> 8) & 0xff) #define REFCLOCKUNIT(srcadr) (SRCADR(srcadr) & 0xff) /* * List of reference clock names and descriptions. These must agree with * lib/clocktypes.c and ntpd/refclock_conf.c. */ struct clktype { int code; /* driver "major" number */ const char *clocktype; /* long description */ const char *abbrev; /* short description */ }; /* * Configuration flag values */ #define CLK_HAVETIME1 0x1 #define CLK_HAVETIME2 0x2 #define CLK_HAVEVAL1 0x4 #define CLK_HAVEVAL2 0x8 #define CLK_FLAG1 0x1 #define CLK_FLAG2 0x2 #define CLK_FLAG3 0x4 #define CLK_FLAG4 0x8 #define CLK_HAVEFLAG1 0x10 #define CLK_HAVEFLAG2 0x20 #define CLK_HAVEFLAG3 0x40 #define CLK_HAVEFLAG4 0x80 /* * Constant for disabling event reporting in * refclock_receive. ORed in leap * parameter */ #define REFCLOCK_OWN_STATES 0x80 /* * Structure for returning clock status */ struct refclockstat { u_char type; /* clock type */ u_char flags; /* clock flags */ u_char haveflags; /* bit array of valid flags */ u_short lencode; /* length of last timecode */ const char *p_lastcode; /* last timecode received */ u_int32 polls; /* transmit polls */ u_int32 noresponse; /* no response to poll */ u_int32 badformat; /* bad format timecode received */ u_int32 baddata; /* invalid data timecode received */ u_int32 timereset; /* driver resets */ const char *clockdesc; /* ASCII description */ double fudgetime1; /* configure fudge time1 */ double fudgetime2; /* configure fudge time2 */ int32 fudgeval1; /* configure fudge value1 */ int32 fudgeval2; /* configure fudge value2 */ u_char currentstatus; /* clock status */ u_char lastevent; /* last exception event */ u_char leap; /* leap bits */ struct ctl_var *kv_list; /* additional variables */ }; /* * Reference clock I/O structure. Used to provide an interface between * the reference clock drivers and the I/O module. */ struct refclockio { struct refclockio *next; /* link to next structure */ void (*clock_recv) P((struct recvbuf *)); /* completion routine */ int (*io_input) P((struct recvbuf *)); /* input routine - to avoid excessive buffer use due to small bursts of refclock input data */ caddr_t srcclock; /* pointer to clock structure */ int datalen; /* lenth of data */ int fd; /* file descriptor */ u_long recvcount; /* count of receive completions */ }; /* * Structure for returning debugging info */ #define NCLKBUGVALUES 16 #define NCLKBUGTIMES 32 struct refclockbug { u_char nvalues; /* values following */ u_char ntimes; /* times following */ u_short svalues; /* values format sign array */ u_int32 stimes; /* times format sign array */ u_int32 values[NCLKBUGVALUES]; /* real values */ l_fp times[NCLKBUGTIMES]; /* real times */ }; /* * Structure interface between the reference clock support * ntp_refclock.c and the driver utility routines */ #define MAXSTAGE 60 /* max median filter stages */ #define NSTAGE 5 /* default median filter stages */ #define BMAX 128 /* max timecode length */ #define GMT 0 /* I hope nobody sees this */ #define MAXDIAL 60 /* max length of modem dial strings */ /* * Line discipline flags. These require line discipline or streams * modules to be installed/loaded in the kernel. If specified, but not * installed, the code runs as if unspecified. */ #define LDISC_STD 0x0 /* standard */ #define LDISC_CLK 0x1 /* tty_clk \n intercept */ #define LDISC_CLKPPS 0x2 /* tty_clk \377 intercept */ #define LDISC_ACTS 0x4 /* tty_clk #* intercept */ #define LDISC_CHU 0x8 /* depredated */ #define LDISC_PPS 0x10 /* ppsclock, ppsapi */ #define LDISC_RAW 0x20 /* raw binary */ struct refclockproc { struct refclockio io; /* I/O handler structure */ caddr_t unitptr; /* pointer to unit structure */ u_char leap; /* leap/synchronization code */ u_char currentstatus; /* clock status */ u_char lastevent; /* last exception event */ u_char type; /* clock type */ const char *clockdesc; /* clock description */ char a_lastcode[BMAX]; /* last timecode received */ u_short lencode; /* length of last timecode */ int year; /* year of eternity */ int day; /* day of year */ int hour; /* hour of day */ int minute; /* minute of hour */ int second; /* second of minute */ int msec; /* millisecond of second */ long usec; /* microsecond of second (alt) */ u_long yearstart; /* beginning of year */ int coderecv; /* put pointer */ int codeproc; /* get pointer */ l_fp lastref; /* timecode timestamp */ l_fp lastrec; /* local timestamp */ double offset; /* mean offset */ double disp; /* sample dispersion */ double jitter; /* jitter (mean squares) */ double filter[MAXSTAGE]; /* median filter */ /* * Configuration data */ double fudgetime1; /* fudge time1 */ double fudgetime2; /* fudge time2 */ u_int32 refid; /* reference identifier */ u_char sloppyclockflag; /* fudge flags */ /* * Status tallies */ u_long timestarted; /* time we started this */ u_long polls; /* polls sent */ u_long noreply; /* no replies to polls */ u_long badformat; /* bad format reply */ u_long baddata; /* bad data reply */ }; /* * Structure interface between the reference clock support * ntp_refclock.c and particular clock drivers. This must agree with the * structure defined in the driver. */ #define noentry 0 /* flag for null routine */ #define NOFLAGS 0 /* flag for null flags */ struct refclock { int (*clock_start) P((int, struct peer *)); void (*clock_shutdown) P((int, struct peer *)); void (*clock_poll) P((int, struct peer *)); void (*clock_control) P((int, struct refclockstat *, struct refclockstat *, struct peer *)); void (*clock_init) P((void)); void (*clock_buginfo) P((int, struct refclockbug *, struct peer *)); u_long clock_flags; }; /* * Function prototypes */ /* * auxiliary PPS interface (implemented by refclock_atom()) */ extern int pps_sample P((l_fp *)); extern int io_addclock_simple P((struct refclockio *)); extern int io_addclock P((struct refclockio *)); extern void io_closeclock P((struct refclockio *)); #ifdef REFCLOCK extern void refclock_buginfo P((struct sockaddr_in *, struct refclockbug *)); extern void refclock_control P((struct sockaddr_in *, struct refclockstat *, struct refclockstat *)); extern int refclock_open P((char *, int, int)); extern void refclock_transmit P((struct peer *)); extern int refclock_ioctl P((int, int)); extern int refclock_process P((struct refclockproc *)); extern void refclock_process_offset P((struct refclockproc *, l_fp, l_fp, double)); extern void refclock_report P((struct peer *, int)); extern int refclock_gtlin P((struct recvbuf *, char *, int, l_fp *)); #endif /* REFCLOCK */ #endif /* NTP_REFCLOCK_H */