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31 * @(#)globals.h 8.1 (Berkeley) 6/6/93
35 #include <sys/param.h>
37 #include <sys/socket.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
53 #include <protocols/timed.h>
55 #define SECDAY (24*SECHR)
57 /* Best expected round trip for a measurement.
58 * This is essentially the number of milliseconds per CPU tick (CLK_TCK?).
59 * All delays shorter than this are usually reported as 0.
61 #define MIN_ROUND ((1000-1)/CLK_TCK)
64 #define SAMPLEINTVL 240 /* synch() freq for master in sec */
65 #define MAXADJ 20 /* max adjtime() correction in sec */
67 #define MAX_TRIM 3000000 /* max drift in nsec/sec, 0.3% */
68 #define BIG_ADJ (MAX_TRIM/1000*SAMPLEINTVL*2) /* max good adj */
70 #define MINTOUT 360 /* election delays, 6-15 minutes */
73 #define BAD_STATUS (-1)
77 #define HOSTDOWN 0x7fffffff
82 #define MAX_HOPCNT 10 /* max value for tsp_hpcnt */
84 #define LOSTHOST 3 /* forget after this many failures */
86 #define VALID_RANGE (MAXADJ*1000) /* good times in milliseconds */
87 #define GOOD_RANGE (MIN_ROUND*2)
88 #define VGOOD_RANGE (MIN_ROUND-1)
92 * Global and per-network states.
94 #define NOMASTER 0 /* no good master */
98 #define ALL (SLAVE|MASTER|IGNORE)
99 #define SUBMASTER (SLAVE|MASTER)
101 #define NHOSTS 1013 /* max of hosts controlled by timed
102 * This must be a prime number.
105 struct hosttbl *h_bak; /* hash chain */
106 struct hosttbl *h_fwd;
107 struct hosttbl *l_bak; /* "sequential" list */
108 struct hosttbl *l_fwd;
110 struct sockaddr_in addr;
111 char name[MAXHOSTNAMELEN];
112 u_char head; /* 1=head of hash chain */
113 u_char good; /* 0=trusted host, for averaging */
114 u_char noanswer; /* count of failures to answer */
115 u_char need_set; /* need a SETTIME */
120 /* closed hash table with internal chaining */
121 extern struct hosttbl hosttbl[NHOSTS+1];
122 #define self hosttbl[0]
123 #define hostname (self.name)
127 struct netinfo *next;
130 struct in_addr my_addr;
131 struct sockaddr_in dest_addr; /* broadcast addr or point-point */
133 struct timeval slvwait; /* delay before sending our time */
134 int quit_count; /* recent QUITs */
139 #define tvtomsround(tv) ((tv).tv_sec*1000 + ((tv).tv_usec + 500)/1000)
141 extern struct netinfo *nettab;
145 extern struct sockaddr_in from;
146 extern struct timeval from_when; /* when the last msg arrived */
147 extern u_short sequence; /* TSP message sequence number */
148 extern struct netinfo *fromnet, *slavenet;
150 extern long delay1, delay2;
151 extern int nslavenets; /* nets were I could be a slave */
152 extern int nmasternets; /* nets were I could be a master */
153 extern int nignorednets; /* ignored nets */
154 extern int nnets; /* nets I am connected to */
157 #define trace_msg(msg) {if (trace) fprintf(fd, msg);}
159 #define trace_sendto_err(addr) { \
160 int st_errno = errno; \
161 syslog(LOG_ERR, "%s %d: sendto %s: %m", \
162 __FILE__, __LINE__, inet_ntoa(addr)); \
164 fprintf(fd, "%s %d: sendto %s: %d", __FILE__, __LINE__, \
165 inet_ntoa(addr), st_errno); \
169 # define max(a,b) (a<b ? b : a)
170 # define min(a,b) (a>b ? b : a)
171 # define abs(x) (x>=0 ? x : -(x))