/* * (C) Masami Komiya <mkomiya@sonare.it> 2005 * * SPDX-License-Identifier: GPL-2.0+ */ #ifndef __SNTP_H__ #define __SNTP_H__ #define NTP_SERVICE_PORT 123 #define SNTP_PACKET_LEN 48 /* Leap Indicator */ #define NTP_LI_NOLEAP 0x0 #define NTP_LI_61SECS 0x1 #define NTP_LI_59SECS 0x2 #define NTP_LI_ALARM 0x3 /* Version */ #define NTP_VERSION 4 /* Mode */ #define NTP_MODE_RESERVED 0 #define NTP_MODE_SYMACTIVE 1 /* Symmetric Active */ #define NTP_MODE_SYMPASSIVE 2 /* Symmetric Passive */ #define NTP_MODE_CLIENT 3 #define NTP_MODE_SERVER 4 #define NTP_MODE_BROADCAST 5 #define NTP_MODE_NTPCTRL 6 /* Reserved for NTP control message */ #define NTP_MODE_PRIVATE 7 /* Reserved for private use */ struct sntp_pkt_t { #if __LITTLE_ENDIAN uchar mode:3; uchar vn:3; uchar li:2; #else uchar li:2; uchar vn:3; uchar mode:3; #endif uchar stratum; uchar poll; uchar precision; uint root_delay; uint root_dispersion; uint reference_id; unsigned long long reference_timestamp; unsigned long long originate_timestamp; unsigned long long receive_timestamp; unsigned long long transmit_timestamp; }; void sntp_start(void); /* Begin SNTP */ #endif /* __SNTP_H__ */