1/*
2 * ntpd.h - Prototypes for ntpd.
3 */
4
5#include "ntp_syslog.h"
6#include "ntp_fp.h"
7#include "ntp.h"
8#include "ntp_select.h"
9#include "ntp_malloc.h"
10#include "ntp_refclock.h"
11#include "recvbuff.h"
12
13#define MAXINTERFACES 512
14#define MAXFILENAME 128 /* maximum length of a file name */
15
16#ifdef SYS_WINNT
17#define exit service_exit
18extern void service_exit (int);
19/* declare the service threads */
20void service_main (DWORD, LPTSTR *);
21void service_ctrl (DWORD);
22void worker_thread (void *);
23#define sleep(x) Sleep((DWORD) x * 1000 /* milliseconds */ );
24#else
25#define closesocket close
26#endif /* SYS_WINNT */
27
28/* ntp_config.c */
29extern void getconfig P((int, char **));
30
31/* ntp_config.c */
32extern void ctl_clr_stats P((void));
33extern int ctlclrtrap P((struct sockaddr_in *, struct interface *, int));
34extern u_short ctlpeerstatus P((struct peer *));
35extern int ctlsettrap P((struct sockaddr_in *, struct interface *, int, int));
36extern u_short ctlsysstatus P((void));
37extern void init_control P((void));
38extern void process_control P((struct recvbuf *, int));
39extern void report_event P((int, struct peer *));
40
41extern double fabs P((double));
42extern double sqrt P((double));
43
44/* ntp_control.c */
45/*
46 * Structure for translation tables between internal system
47 * variable indices and text format.
48 */
49struct ctl_var {
50 u_short code;
51 u_short flags;
52 char *text;
53};
54/*
55 * Flag values
56 */
57#define CAN_READ 0x01
58#define CAN_WRITE 0x02
59
60#define DEF 0x20
61#define PADDING 0x40
62#define EOV 0x80
63
64#define RO (CAN_READ)
65#define WO (CAN_WRITE)
66#define RW (CAN_READ|CAN_WRITE)
67
68extern char * add_var P((struct ctl_var **, unsigned long, int));
69extern void free_varlist P((struct ctl_var *));
70extern void set_var P((struct ctl_var **, const char *, unsigned long, int));
71extern void set_sys_var P((char *, unsigned long, int));
72
73/* ntp_intres.c */
74extern void ntp_res_name P((u_int32, u_short));
75extern void ntp_res_recv P((void));
76extern void ntp_intres P((void));
77
78/* ntp_io.c */
79extern struct interface *findinterface P((struct sockaddr_in *));
80extern struct interface *findbcastinter P((struct sockaddr_in *));
81
82extern void init_io P((void));
83extern void input_handler P((l_fp *));
84extern void io_clr_stats P((void));
85extern void io_setbclient P((void));
86extern void io_unsetbclient P((void));
87extern void io_multicast_add P((u_int32));
88extern void io_multicast_del P((u_int32));
89extern void kill_asyncio P((void));
90
91extern void sendpkt P((struct sockaddr_in *, struct interface *, int, struct pkt *, int));
92#ifdef HAVE_SIGNALED_IO
93extern void wait_for_signal P((void));
94extern void unblock_io_and_alarm P((void));
95extern void block_io_and_alarm P((void));
96#endif
97
98/* ntp_leap.c */
99extern void init_leap P((void));
100extern void leap_process P((void));
101extern int leap_setleap P((int, int));
102/*
103 * there seems to be a bug in the IRIX 4 compiler which prevents
104 * u_char from beeing used in prototyped functions.
105 * This is also true AIX compiler.
106 * So give up and define it to be int. WLJ
107 */
108extern int leap_actual P((int));
109
110/* ntp_loopfilter.c */
111extern void init_loopfilter P((void));
112extern int local_clock P((struct peer *, double, double));
113extern void adj_host_clock P((void));
114extern void loop_config P((int, double));
115extern void huffpuff P((void));
116
117/* ntp_monitor.c */
118extern void init_mon P((void));
119extern void mon_start P((int));
120extern void mon_stop P((int));
121extern void ntp_monitor P((struct recvbuf *));
122
123/* ntp_peer.c */
124extern void init_peer P((void));
125extern struct peer *findexistingpeer P((struct sockaddr_in *, struct peer *, int));
126extern struct peer *findpeer P((struct sockaddr_in *, struct interface *, int, int, int *));
127extern struct peer *findpeerbyassoc P((u_int));
128extern struct peer *newpeer P((struct sockaddr_in *, struct interface *, int, int, int, int, u_int, u_int, int, keyid_t));
129extern void peer_all_reset P((void));
130extern void peer_clr_stats P((void));
131extern struct peer *peer_config P((struct sockaddr_in *, struct interface *, int, int, int, int, u_int, int, keyid_t, u_char *));
132extern void peer_reset P((struct peer *));
133extern int peer_unconfig P((struct sockaddr_in *, struct interface *, int));
134extern void unpeer P((struct peer *));
135extern void clear_all P((void));
136#ifdef AUTOKEY
137extern void expire_all P((void));
138#endif /* AUTOKEY */
139extern struct peer *findmanycastpeer P((struct recvbuf *));
140extern void resetmanycast P((void));
141
142/* ntp_proto.c */
143extern void transmit P((struct peer *));
144extern void receive P((struct recvbuf *));
145extern void peer_clear P((struct peer *));
146extern void process_packet P((struct peer *, struct pkt *, l_fp *));
147extern void clock_select P((void));
148
149/*
150 * there seems to be a bug in the IRIX 4 compiler which prevents
151 * u_char from beeing used in prototyped functions.
152 * This is also true AIX compiler.
153 * So give up and define it to be int. WLJ
154 */
155extern void poll_update P((struct peer *, int));
156
157extern void clear P((struct peer *));
158extern void clock_filter P((struct peer *, double, double, double));
159extern void init_proto P((void));
160extern void proto_config P((int, u_long, double));
161extern void proto_clr_stats P((void));
162
163#ifdef REFCLOCK
164/* ntp_refclock.c */
165extern int refclock_newpeer P((struct peer *));
166extern void refclock_unpeer P((struct peer *));
167extern void refclock_receive P((struct peer *));
168extern void refclock_transmit P((struct peer *));
169extern void init_refclock P((void));
170#endif /* REFCLOCK */
171
172/* ntp_request.c */
173extern void init_request P((void));
174extern void process_private P((struct recvbuf *, int));
175
176/* ntp_restrict.c */
177extern void init_restrict P((void));
178extern int restrictions P((struct sockaddr_in *));
179extern void hack_restrict P((int, struct sockaddr_in *, struct sockaddr_in *, int, int));
180
181/* ntp_timer.c */
182extern void init_timer P((void));
183extern void timer P((void));
184extern void timer_clr_stats P((void));
185#ifdef AUTOKEY
186extern char *sys_hostname;
187extern l_fp sys_revoketime;
188#endif /* AUTOKEY */
189
190/* ntp_util.c */
191extern void init_util P((void));
192extern void hourly_stats P((void));
193extern void stats_config P((int, char *));
194extern void record_peer_stats P((struct sockaddr_in *, int, double, double, double, double));
195extern void record_loop_stats P((double, double, double, double, int));
196extern void record_clock_stats P((struct sockaddr_in *, const char *));
197extern void record_raw_stats P((struct sockaddr_in *, struct sockaddr_in *, l_fp *, l_fp *, l_fp *, l_fp *));
198
199/*
200 * Variable declarations for ntpd.
201 */
202
203/* ntp_config.c */
204extern char const * progname;
205extern char sys_phone[][MAXDIAL]; /* ACTS phone numbers */
206extern char pps_device[]; /* PPS device name */
207#if defined(HAVE_SCHED_SETSCHEDULER)
208extern int config_priority_override;
209extern int config_priority;
210#endif
211
212/* ntp_control.c */
213struct ctl_trap;
214extern struct ctl_trap ctl_trap[];
215extern int num_ctl_traps;
216extern keyid_t ctl_auth_keyid; /* keyid used for authenticating write requests */
217
218/*
219 * Statistic counters to keep track of requests and responses.
220 */
221extern u_long ctltimereset; /* time stats reset */
222extern u_long numctlreq; /* number of requests we've received */
223extern u_long numctlbadpkts; /* number of bad control packets */
224extern u_long numctlresponses; /* number of resp packets sent with data */
225extern u_long numctlfrags; /* number of fragments sent */
226extern u_long numctlerrors; /* number of error responses sent */
227extern u_long numctltooshort; /* number of too short input packets */
228extern u_long numctlinputresp; /* number of responses on input */
229extern u_long numctlinputfrag; /* number of fragments on input */
230extern u_long numctlinputerr; /* number of input pkts with err bit set */
231extern u_long numctlbadoffset; /* number of input pkts with nonzero offset */
232extern u_long numctlbadversion; /* number of input pkts with unknown version */
233extern u_long numctldatatooshort; /* data too short for count */
234extern u_long numctlbadop; /* bad op code found in packet */
235extern u_long numasyncmsgs; /* number of async messages we've sent */
236
237/* ntp_intres.c */
238extern keyid_t req_keyid; /* request keyid */
239extern char * req_file; /* name of the file with configuration info */
240
241/*
242 * Other statistics of possible interest
243 */
244extern volatile u_long packets_dropped; /* total number of packets dropped on reception */
245extern volatile u_long packets_ignored; /* packets received on wild card interface */
246extern volatile u_long packets_received;/* total number of packets received */
247extern u_long packets_sent; /* total number of packets sent */
248extern u_long packets_notsent; /* total number of packets which couldn't be sent */
249
250extern volatile u_long handler_calls; /* number of calls to interrupt handler */
251extern volatile u_long handler_pkts; /* number of pkts received by handler */
252extern u_long io_timereset; /* time counters were reset */
253
254/*
255 * Interface stuff
256 */
257extern struct interface *any_interface; /* default interface */
258extern struct interface *loopback_interface; /* loopback interface */
259
260/*
261 * File descriptor masks etc. for call to select
262 */
263extern fd_set activefds;
264extern int maxactivefd;
265
266/* ntp_loopfilter.c */
267extern double drift_comp; /* clock frequency (s/s) */
268extern double clock_stability; /* clock stability (s/s) */
269extern double clock_max; /* max offset before step (s) */
270extern double clock_panic; /* max offset before panic (s) */
271extern double clock_phi; /* dispersion rate (s/s) */
272extern double clock_minstep; /* step timeout (s) */
273extern u_long pps_control; /* last pps sample time */
274#ifdef KERNEL_PLL
275extern int pll_status; /* status bits for kernel pll */
276#endif /* KERNEL_PLL */
277
278/*
279 * Clock state machine control flags
280 */
281extern int ntp_enable; /* clock discipline enabled */
282extern int pll_control; /* kernel support available */
283extern int kern_enable; /* kernel support enabled */
284extern int pps_enable; /* kernel PPS discipline enabled */
285extern int ext_enable; /* external clock enabled */
286extern int cal_enable; /* refclock calibrate enable */
287extern int allow_step; /* allow step correction */
288extern int allow_panic; /* allow panic correction */
289extern int mode_ntpdate; /* exit on first clock set */
290extern int peer_ntpdate; /* count of ntpdate peers */
291
292/*
293 * Clock state machine variables
294 */
295extern u_char sys_poll; /* system poll interval (log2 s) */
296extern u_char sys_minpoll; /* min system poll interval (log2 s) */
297extern int state; /* clock discipline state */
298extern int tc_counter; /* poll-adjust counter */
299extern u_long last_time; /* time of last clock update (s) */
300extern double last_offset; /* last clock offset (s) */
301extern u_char allan_xpt; /* Allan intercept (s) */
302extern double sys_error; /* system RMS error (s) */
303extern double sys_jitter; /* system RMS jitter (s) */
304
305/* ntp_monitor.c */
306extern struct mon_data mon_mru_list;
307extern struct mon_data mon_fifo_list;
308extern int mon_enabled;
309
310/* ntp_peer.c */
311extern struct peer *peer_hash[]; /* peer hash table */
312extern int peer_hash_count[]; /* count of peers in each bucket */
313extern struct peer *assoc_hash[]; /* association ID hash table */
314extern int assoc_hash_count[];
315extern int peer_free_count;
316
317/*
318 * Miscellaneous statistic counters which may be queried.
319 */
320extern u_long peer_timereset; /* time stat counters were zeroed */
321extern u_long findpeer_calls; /* number of calls to findpeer */
322extern u_long assocpeer_calls; /* number of calls to findpeerbyassoc */
323extern u_long peer_allocations; /* number of allocations from the free list */
324extern u_long peer_demobilizations; /* number of structs freed to free list */
325extern int total_peer_structs; /* number of peer structs in circulation */
326extern int peer_associations; /* number of active associations */
327
328/* ntp_proto.c */
329/*
330 * System variables are declared here. See Section 3.2 of the
331 * specification.
332 */
333extern u_char sys_leap; /* system leap indicator */
334extern u_char sys_stratum; /* stratum of system */
335extern s_char sys_precision; /* local clock precision */
336extern double sys_rootdelay; /* distance to current sync source */
337extern double sys_rootdispersion; /* dispersion of system clock */
338extern u_int32 sys_refid; /* reference source for local clock */
339extern l_fp sys_reftime; /* time we were last updated */
340extern struct peer *sys_peer; /* our current peer */
341extern struct peer *sys_prefer; /* our cherished peer */
342extern u_long sys_automax; /* maximum session key lifetime */
343
344/*
345 * Nonspecified system state variables.
346 */
347extern int sys_bclient; /* we set our time to broadcasts */
348extern double sys_bdelay; /* broadcast client default delay */
349extern int sys_authenticate; /* requre authentication for config */
350extern l_fp sys_authdelay; /* authentication delay */
351extern keyid_t sys_private; /* private value for session seed */
352extern int sys_manycastserver; /* 1 => respond to manycast client pkts */
353
354/*
355 * Statistics counters
356 */
357extern u_long sys_stattime; /* time when we started recording */
358extern u_long sys_badstratum; /* packets with invalid stratum */
359extern u_long sys_oldversionpkt; /* old version packets received */
360extern u_long sys_newversionpkt; /* new version packets received */
361extern u_long sys_unknownversion; /* don't know version packets */
362extern u_long sys_badlength; /* packets with bad length */
363extern u_long sys_processed; /* packets processed */
364extern u_long sys_badauth; /* packets dropped because of auth */
365extern u_long sys_limitrejected; /* pkts rejected due to client count per net */
366
367/* ntp_refclock.c */
368#ifdef REFCLOCK
369#if defined(PPS) || defined(HAVE_PPSAPI)
370extern int fdpps; /* pps file descriptor */
371#endif /* PPS */
372#endif
373
374/* ntp_request.c */
375extern keyid_t info_auth_keyid; /* keyid used to authenticate requests */
376
377/* ntp_restrict.c */
378extern struct restrictlist *restrictlist; /* the restriction list */
379extern u_long client_limit;
380extern u_long client_limit_period;
381
382/* ntp_timer.c */
383extern volatile int alarm_flag; /* alarm flag */
384extern u_long sys_revoke; /* keys revoke timeout */
385extern volatile u_long alarm_overflow;
386extern u_long current_time; /* current time (s) */
387extern u_long timer_timereset;
388extern u_long timer_overflows;
389extern u_long timer_xmtcalls;
390
391/* ntp_util.c */
392extern int stats_control; /* write stats to fileset? */
393
394/* ntpd.c */
395extern volatile int debug; /* debugging flag */
396extern int nofork; /* no-fork flag */
397extern int initializing; /* initializing flag */
398
399/* refclock_conf.c */
400#ifdef REFCLOCK
401extern struct refclock *refclock_conf[]; /* refclock configuration table */
402extern u_char num_refclock_conf;
403#endif
2 * ntpd.h - Prototypes for ntpd.
3 */
4
5#include "ntp_syslog.h"
6#include "ntp_fp.h"
7#include "ntp.h"
8#include "ntp_select.h"
9#include "ntp_malloc.h"
10#include "ntp_refclock.h"
11#include "recvbuff.h"
12
13#define MAXINTERFACES 512
14#define MAXFILENAME 128 /* maximum length of a file name */
15
16#ifdef SYS_WINNT
17#define exit service_exit
18extern void service_exit (int);
19/* declare the service threads */
20void service_main (DWORD, LPTSTR *);
21void service_ctrl (DWORD);
22void worker_thread (void *);
23#define sleep(x) Sleep((DWORD) x * 1000 /* milliseconds */ );
24#else
25#define closesocket close
26#endif /* SYS_WINNT */
27
28/* ntp_config.c */
29extern void getconfig P((int, char **));
30
31/* ntp_config.c */
32extern void ctl_clr_stats P((void));
33extern int ctlclrtrap P((struct sockaddr_in *, struct interface *, int));
34extern u_short ctlpeerstatus P((struct peer *));
35extern int ctlsettrap P((struct sockaddr_in *, struct interface *, int, int));
36extern u_short ctlsysstatus P((void));
37extern void init_control P((void));
38extern void process_control P((struct recvbuf *, int));
39extern void report_event P((int, struct peer *));
40
41extern double fabs P((double));
42extern double sqrt P((double));
43
44/* ntp_control.c */
45/*
46 * Structure for translation tables between internal system
47 * variable indices and text format.
48 */
49struct ctl_var {
50 u_short code;
51 u_short flags;
52 char *text;
53};
54/*
55 * Flag values
56 */
57#define CAN_READ 0x01
58#define CAN_WRITE 0x02
59
60#define DEF 0x20
61#define PADDING 0x40
62#define EOV 0x80
63
64#define RO (CAN_READ)
65#define WO (CAN_WRITE)
66#define RW (CAN_READ|CAN_WRITE)
67
68extern char * add_var P((struct ctl_var **, unsigned long, int));
69extern void free_varlist P((struct ctl_var *));
70extern void set_var P((struct ctl_var **, const char *, unsigned long, int));
71extern void set_sys_var P((char *, unsigned long, int));
72
73/* ntp_intres.c */
74extern void ntp_res_name P((u_int32, u_short));
75extern void ntp_res_recv P((void));
76extern void ntp_intres P((void));
77
78/* ntp_io.c */
79extern struct interface *findinterface P((struct sockaddr_in *));
80extern struct interface *findbcastinter P((struct sockaddr_in *));
81
82extern void init_io P((void));
83extern void input_handler P((l_fp *));
84extern void io_clr_stats P((void));
85extern void io_setbclient P((void));
86extern void io_unsetbclient P((void));
87extern void io_multicast_add P((u_int32));
88extern void io_multicast_del P((u_int32));
89extern void kill_asyncio P((void));
90
91extern void sendpkt P((struct sockaddr_in *, struct interface *, int, struct pkt *, int));
92#ifdef HAVE_SIGNALED_IO
93extern void wait_for_signal P((void));
94extern void unblock_io_and_alarm P((void));
95extern void block_io_and_alarm P((void));
96#endif
97
98/* ntp_leap.c */
99extern void init_leap P((void));
100extern void leap_process P((void));
101extern int leap_setleap P((int, int));
102/*
103 * there seems to be a bug in the IRIX 4 compiler which prevents
104 * u_char from beeing used in prototyped functions.
105 * This is also true AIX compiler.
106 * So give up and define it to be int. WLJ
107 */
108extern int leap_actual P((int));
109
110/* ntp_loopfilter.c */
111extern void init_loopfilter P((void));
112extern int local_clock P((struct peer *, double, double));
113extern void adj_host_clock P((void));
114extern void loop_config P((int, double));
115extern void huffpuff P((void));
116
117/* ntp_monitor.c */
118extern void init_mon P((void));
119extern void mon_start P((int));
120extern void mon_stop P((int));
121extern void ntp_monitor P((struct recvbuf *));
122
123/* ntp_peer.c */
124extern void init_peer P((void));
125extern struct peer *findexistingpeer P((struct sockaddr_in *, struct peer *, int));
126extern struct peer *findpeer P((struct sockaddr_in *, struct interface *, int, int, int *));
127extern struct peer *findpeerbyassoc P((u_int));
128extern struct peer *newpeer P((struct sockaddr_in *, struct interface *, int, int, int, int, u_int, u_int, int, keyid_t));
129extern void peer_all_reset P((void));
130extern void peer_clr_stats P((void));
131extern struct peer *peer_config P((struct sockaddr_in *, struct interface *, int, int, int, int, u_int, int, keyid_t, u_char *));
132extern void peer_reset P((struct peer *));
133extern int peer_unconfig P((struct sockaddr_in *, struct interface *, int));
134extern void unpeer P((struct peer *));
135extern void clear_all P((void));
136#ifdef AUTOKEY
137extern void expire_all P((void));
138#endif /* AUTOKEY */
139extern struct peer *findmanycastpeer P((struct recvbuf *));
140extern void resetmanycast P((void));
141
142/* ntp_proto.c */
143extern void transmit P((struct peer *));
144extern void receive P((struct recvbuf *));
145extern void peer_clear P((struct peer *));
146extern void process_packet P((struct peer *, struct pkt *, l_fp *));
147extern void clock_select P((void));
148
149/*
150 * there seems to be a bug in the IRIX 4 compiler which prevents
151 * u_char from beeing used in prototyped functions.
152 * This is also true AIX compiler.
153 * So give up and define it to be int. WLJ
154 */
155extern void poll_update P((struct peer *, int));
156
157extern void clear P((struct peer *));
158extern void clock_filter P((struct peer *, double, double, double));
159extern void init_proto P((void));
160extern void proto_config P((int, u_long, double));
161extern void proto_clr_stats P((void));
162
163#ifdef REFCLOCK
164/* ntp_refclock.c */
165extern int refclock_newpeer P((struct peer *));
166extern void refclock_unpeer P((struct peer *));
167extern void refclock_receive P((struct peer *));
168extern void refclock_transmit P((struct peer *));
169extern void init_refclock P((void));
170#endif /* REFCLOCK */
171
172/* ntp_request.c */
173extern void init_request P((void));
174extern void process_private P((struct recvbuf *, int));
175
176/* ntp_restrict.c */
177extern void init_restrict P((void));
178extern int restrictions P((struct sockaddr_in *));
179extern void hack_restrict P((int, struct sockaddr_in *, struct sockaddr_in *, int, int));
180
181/* ntp_timer.c */
182extern void init_timer P((void));
183extern void timer P((void));
184extern void timer_clr_stats P((void));
185#ifdef AUTOKEY
186extern char *sys_hostname;
187extern l_fp sys_revoketime;
188#endif /* AUTOKEY */
189
190/* ntp_util.c */
191extern void init_util P((void));
192extern void hourly_stats P((void));
193extern void stats_config P((int, char *));
194extern void record_peer_stats P((struct sockaddr_in *, int, double, double, double, double));
195extern void record_loop_stats P((double, double, double, double, int));
196extern void record_clock_stats P((struct sockaddr_in *, const char *));
197extern void record_raw_stats P((struct sockaddr_in *, struct sockaddr_in *, l_fp *, l_fp *, l_fp *, l_fp *));
198
199/*
200 * Variable declarations for ntpd.
201 */
202
203/* ntp_config.c */
204extern char const * progname;
205extern char sys_phone[][MAXDIAL]; /* ACTS phone numbers */
206extern char pps_device[]; /* PPS device name */
207#if defined(HAVE_SCHED_SETSCHEDULER)
208extern int config_priority_override;
209extern int config_priority;
210#endif
211
212/* ntp_control.c */
213struct ctl_trap;
214extern struct ctl_trap ctl_trap[];
215extern int num_ctl_traps;
216extern keyid_t ctl_auth_keyid; /* keyid used for authenticating write requests */
217
218/*
219 * Statistic counters to keep track of requests and responses.
220 */
221extern u_long ctltimereset; /* time stats reset */
222extern u_long numctlreq; /* number of requests we've received */
223extern u_long numctlbadpkts; /* number of bad control packets */
224extern u_long numctlresponses; /* number of resp packets sent with data */
225extern u_long numctlfrags; /* number of fragments sent */
226extern u_long numctlerrors; /* number of error responses sent */
227extern u_long numctltooshort; /* number of too short input packets */
228extern u_long numctlinputresp; /* number of responses on input */
229extern u_long numctlinputfrag; /* number of fragments on input */
230extern u_long numctlinputerr; /* number of input pkts with err bit set */
231extern u_long numctlbadoffset; /* number of input pkts with nonzero offset */
232extern u_long numctlbadversion; /* number of input pkts with unknown version */
233extern u_long numctldatatooshort; /* data too short for count */
234extern u_long numctlbadop; /* bad op code found in packet */
235extern u_long numasyncmsgs; /* number of async messages we've sent */
236
237/* ntp_intres.c */
238extern keyid_t req_keyid; /* request keyid */
239extern char * req_file; /* name of the file with configuration info */
240
241/*
242 * Other statistics of possible interest
243 */
244extern volatile u_long packets_dropped; /* total number of packets dropped on reception */
245extern volatile u_long packets_ignored; /* packets received on wild card interface */
246extern volatile u_long packets_received;/* total number of packets received */
247extern u_long packets_sent; /* total number of packets sent */
248extern u_long packets_notsent; /* total number of packets which couldn't be sent */
249
250extern volatile u_long handler_calls; /* number of calls to interrupt handler */
251extern volatile u_long handler_pkts; /* number of pkts received by handler */
252extern u_long io_timereset; /* time counters were reset */
253
254/*
255 * Interface stuff
256 */
257extern struct interface *any_interface; /* default interface */
258extern struct interface *loopback_interface; /* loopback interface */
259
260/*
261 * File descriptor masks etc. for call to select
262 */
263extern fd_set activefds;
264extern int maxactivefd;
265
266/* ntp_loopfilter.c */
267extern double drift_comp; /* clock frequency (s/s) */
268extern double clock_stability; /* clock stability (s/s) */
269extern double clock_max; /* max offset before step (s) */
270extern double clock_panic; /* max offset before panic (s) */
271extern double clock_phi; /* dispersion rate (s/s) */
272extern double clock_minstep; /* step timeout (s) */
273extern u_long pps_control; /* last pps sample time */
274#ifdef KERNEL_PLL
275extern int pll_status; /* status bits for kernel pll */
276#endif /* KERNEL_PLL */
277
278/*
279 * Clock state machine control flags
280 */
281extern int ntp_enable; /* clock discipline enabled */
282extern int pll_control; /* kernel support available */
283extern int kern_enable; /* kernel support enabled */
284extern int pps_enable; /* kernel PPS discipline enabled */
285extern int ext_enable; /* external clock enabled */
286extern int cal_enable; /* refclock calibrate enable */
287extern int allow_step; /* allow step correction */
288extern int allow_panic; /* allow panic correction */
289extern int mode_ntpdate; /* exit on first clock set */
290extern int peer_ntpdate; /* count of ntpdate peers */
291
292/*
293 * Clock state machine variables
294 */
295extern u_char sys_poll; /* system poll interval (log2 s) */
296extern u_char sys_minpoll; /* min system poll interval (log2 s) */
297extern int state; /* clock discipline state */
298extern int tc_counter; /* poll-adjust counter */
299extern u_long last_time; /* time of last clock update (s) */
300extern double last_offset; /* last clock offset (s) */
301extern u_char allan_xpt; /* Allan intercept (s) */
302extern double sys_error; /* system RMS error (s) */
303extern double sys_jitter; /* system RMS jitter (s) */
304
305/* ntp_monitor.c */
306extern struct mon_data mon_mru_list;
307extern struct mon_data mon_fifo_list;
308extern int mon_enabled;
309
310/* ntp_peer.c */
311extern struct peer *peer_hash[]; /* peer hash table */
312extern int peer_hash_count[]; /* count of peers in each bucket */
313extern struct peer *assoc_hash[]; /* association ID hash table */
314extern int assoc_hash_count[];
315extern int peer_free_count;
316
317/*
318 * Miscellaneous statistic counters which may be queried.
319 */
320extern u_long peer_timereset; /* time stat counters were zeroed */
321extern u_long findpeer_calls; /* number of calls to findpeer */
322extern u_long assocpeer_calls; /* number of calls to findpeerbyassoc */
323extern u_long peer_allocations; /* number of allocations from the free list */
324extern u_long peer_demobilizations; /* number of structs freed to free list */
325extern int total_peer_structs; /* number of peer structs in circulation */
326extern int peer_associations; /* number of active associations */
327
328/* ntp_proto.c */
329/*
330 * System variables are declared here. See Section 3.2 of the
331 * specification.
332 */
333extern u_char sys_leap; /* system leap indicator */
334extern u_char sys_stratum; /* stratum of system */
335extern s_char sys_precision; /* local clock precision */
336extern double sys_rootdelay; /* distance to current sync source */
337extern double sys_rootdispersion; /* dispersion of system clock */
338extern u_int32 sys_refid; /* reference source for local clock */
339extern l_fp sys_reftime; /* time we were last updated */
340extern struct peer *sys_peer; /* our current peer */
341extern struct peer *sys_prefer; /* our cherished peer */
342extern u_long sys_automax; /* maximum session key lifetime */
343
344/*
345 * Nonspecified system state variables.
346 */
347extern int sys_bclient; /* we set our time to broadcasts */
348extern double sys_bdelay; /* broadcast client default delay */
349extern int sys_authenticate; /* requre authentication for config */
350extern l_fp sys_authdelay; /* authentication delay */
351extern keyid_t sys_private; /* private value for session seed */
352extern int sys_manycastserver; /* 1 => respond to manycast client pkts */
353
354/*
355 * Statistics counters
356 */
357extern u_long sys_stattime; /* time when we started recording */
358extern u_long sys_badstratum; /* packets with invalid stratum */
359extern u_long sys_oldversionpkt; /* old version packets received */
360extern u_long sys_newversionpkt; /* new version packets received */
361extern u_long sys_unknownversion; /* don't know version packets */
362extern u_long sys_badlength; /* packets with bad length */
363extern u_long sys_processed; /* packets processed */
364extern u_long sys_badauth; /* packets dropped because of auth */
365extern u_long sys_limitrejected; /* pkts rejected due to client count per net */
366
367/* ntp_refclock.c */
368#ifdef REFCLOCK
369#if defined(PPS) || defined(HAVE_PPSAPI)
370extern int fdpps; /* pps file descriptor */
371#endif /* PPS */
372#endif
373
374/* ntp_request.c */
375extern keyid_t info_auth_keyid; /* keyid used to authenticate requests */
376
377/* ntp_restrict.c */
378extern struct restrictlist *restrictlist; /* the restriction list */
379extern u_long client_limit;
380extern u_long client_limit_period;
381
382/* ntp_timer.c */
383extern volatile int alarm_flag; /* alarm flag */
384extern u_long sys_revoke; /* keys revoke timeout */
385extern volatile u_long alarm_overflow;
386extern u_long current_time; /* current time (s) */
387extern u_long timer_timereset;
388extern u_long timer_overflows;
389extern u_long timer_xmtcalls;
390
391/* ntp_util.c */
392extern int stats_control; /* write stats to fileset? */
393
394/* ntpd.c */
395extern volatile int debug; /* debugging flag */
396extern int nofork; /* no-fork flag */
397extern int initializing; /* initializing flag */
398
399/* refclock_conf.c */
400#ifdef REFCLOCK
401extern struct refclock *refclock_conf[]; /* refclock configuration table */
402extern u_char num_refclock_conf;
403#endif