| | 1 | /* |
| | 2 | * (C) Masami Komiya <mkomiya@sonare.it> 2005 |
| | 3 | * |
| | 4 | * SPDX-License-Identifier: GPL-2.0+ |
| | 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 | } __attribute__((packed)); |
| | 55 | |
| | 56 | void sntp_start(void); /* Begin SNTP */ |
| | 57 | |
| | 58 | #endif /* __SNTP_H__ */ |
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