|
|
|
|
/*
|
|
|
|
|
* (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__ */
|
