c46e0549ab
Following the latest version of the draft, accept NTP messages in both PTPv2 and PTPv2.1 messages, accept sync messages in addition to delay request messages, and check the minorSdoId field in PTPv2.1 messages. Transmitted messages are still PTPv2 delay requests. Don't switch to the organization-specific TLV yet. Wait for the NTP TLV subtype and Network Correction extension field to be assigned by IANA to avoid an additional break in compatibility.
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Miroslav Lichvar 2021
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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This is the header file for the Precision Time Protocol (PTP).
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*/
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#ifndef GOT_PTP_H
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#define GOT_PTP_H
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#include "sysincl.h"
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#include "ntp.h"
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#define PTP_VERSION_2 2
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#define PTP_VERSION_2_1 (2 | 1 << 4)
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#define PTP_TYPE_SYNC 0
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#define PTP_TYPE_DELAY_REQ 1
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#define PTP_DOMAIN_NTP 123
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#define PTP_FLAG_UNICAST (1 << (2 + 8))
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#define PTP_TLV_NTP 0x2023
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typedef struct {
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uint8_t type;
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uint8_t version;
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uint16_t length;
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uint8_t domain;
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uint8_t min_sdoid;
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uint16_t flags;
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uint8_t correction[8];
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uint8_t msg_specific[4];
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uint8_t port_id[10];
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uint16_t sequence_id;
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uint8_t control;
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int8_t interval;
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} PTP_Header;
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typedef struct {
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uint16_t type;
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uint16_t length;
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} PTP_TlvHeader;
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typedef struct {
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PTP_Header header;
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uint8_t origin_ts[10];
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PTP_TlvHeader tlv_header;
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NTP_Packet ntp_msg;
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} PTP_NtpMessage;
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#define PTP_NTP_PREFIX_LENGTH (int)offsetof(PTP_NtpMessage, ntp_msg)
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#endif
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