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ea287deb WD |
1 | /* |
2 | * (C) Masami Komiya <mkomiya@sonare.it> 2005 | |
3 | * | |
1a459660 | 4 | * SPDX-License-Identifier: GPL-2.0+ |
ea287deb WD |
5 | */ |
6 | ||
7 | #ifndef __SNTP_H__ | |
8 | #define __SNTP_H__ | |
9 | ||
10 | #define NTP_SERVICE_PORT 123 | |
11 | #define SNTP_PACKET_LEN 48 | |
12 | ||
13 | ||
14 | /* Leap Indicator */ | |
15 | #define NTP_LI_NOLEAP 0x0 | |
16 | #define NTP_LI_61SECS 0x1 | |
17 | #define NTP_LI_59SECS 0x2 | |
18 | #define NTP_LI_ALARM 0x3 | |
19 | ||
20 | /* Version */ | |
21 | ||
22 | #define NTP_VERSION 4 | |
23 | ||
24 | /* Mode */ | |
25 | #define NTP_MODE_RESERVED 0 | |
26 | #define NTP_MODE_SYMACTIVE 1 /* Symmetric Active */ | |
27 | #define NTP_MODE_SYMPASSIVE 2 /* Symmetric Passive */ | |
28 | #define NTP_MODE_CLIENT 3 | |
29 | #define NTP_MODE_SERVER 4 | |
30 | #define NTP_MODE_BROADCAST 5 | |
31 | #define NTP_MODE_NTPCTRL 6 /* Reserved for NTP control message */ | |
32 | #define NTP_MODE_PRIVATE 7 /* Reserved for private use */ | |
33 | ||
34 | struct sntp_pkt_t { | |
35 | #if __LITTLE_ENDIAN | |
36 | uchar mode:3; | |
37 | uchar vn:3; | |
38 | uchar li:2; | |
39 | #else | |
40 | uchar li:2; | |
41 | uchar vn:3; | |
42 | uchar mode:3; | |
43 | #endif | |
44 | uchar stratum; | |
45 | uchar poll; | |
46 | uchar precision; | |
47 | uint root_delay; | |
48 | uint root_dispersion; | |
49 | uint reference_id; | |
50 | unsigned long long reference_timestamp; | |
51 | unsigned long long originate_timestamp; | |
52 | unsigned long long receive_timestamp; | |
53 | unsigned long long transmit_timestamp; | |
54 | }; | |
55 | ||
38ba2558 | 56 | void sntp_start(void); /* Begin SNTP */ |
ea287deb WD |
57 | |
58 | #endif /* __SNTP_H__ */ |