1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Masami Komiya <mkomiya@sonare.it> 2005 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #ifndef __SNTP_H__ 8*4882a593Smuzhiyun #define __SNTP_H__ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define NTP_SERVICE_PORT 123 11*4882a593Smuzhiyun #define SNTP_PACKET_LEN 48 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /* Leap Indicator */ 15*4882a593Smuzhiyun #define NTP_LI_NOLEAP 0x0 16*4882a593Smuzhiyun #define NTP_LI_61SECS 0x1 17*4882a593Smuzhiyun #define NTP_LI_59SECS 0x2 18*4882a593Smuzhiyun #define NTP_LI_ALARM 0x3 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* Version */ 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #define NTP_VERSION 4 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* Mode */ 25*4882a593Smuzhiyun #define NTP_MODE_RESERVED 0 26*4882a593Smuzhiyun #define NTP_MODE_SYMACTIVE 1 /* Symmetric Active */ 27*4882a593Smuzhiyun #define NTP_MODE_SYMPASSIVE 2 /* Symmetric Passive */ 28*4882a593Smuzhiyun #define NTP_MODE_CLIENT 3 29*4882a593Smuzhiyun #define NTP_MODE_SERVER 4 30*4882a593Smuzhiyun #define NTP_MODE_BROADCAST 5 31*4882a593Smuzhiyun #define NTP_MODE_NTPCTRL 6 /* Reserved for NTP control message */ 32*4882a593Smuzhiyun #define NTP_MODE_PRIVATE 7 /* Reserved for private use */ 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun struct sntp_pkt_t { 35*4882a593Smuzhiyun #if __LITTLE_ENDIAN 36*4882a593Smuzhiyun uchar mode:3; 37*4882a593Smuzhiyun uchar vn:3; 38*4882a593Smuzhiyun uchar li:2; 39*4882a593Smuzhiyun #else 40*4882a593Smuzhiyun uchar li:2; 41*4882a593Smuzhiyun uchar vn:3; 42*4882a593Smuzhiyun uchar mode:3; 43*4882a593Smuzhiyun #endif 44*4882a593Smuzhiyun uchar stratum; 45*4882a593Smuzhiyun uchar poll; 46*4882a593Smuzhiyun uchar precision; 47*4882a593Smuzhiyun uint root_delay; 48*4882a593Smuzhiyun uint root_dispersion; 49*4882a593Smuzhiyun uint reference_id; 50*4882a593Smuzhiyun unsigned long long reference_timestamp; 51*4882a593Smuzhiyun unsigned long long originate_timestamp; 52*4882a593Smuzhiyun unsigned long long receive_timestamp; 53*4882a593Smuzhiyun unsigned long long transmit_timestamp; 54*4882a593Smuzhiyun } __attribute__((packed)); 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun void sntp_start(void); /* Begin SNTP */ 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun #endif /* __SNTP_H__ */ 59