3dc9f1ff92
Clients sockets are closed immediately after receiving valid response. Don't wait for the first early HW TX timestamp to enable waiting for late timestamps. It may take a long time or never come if the HW/driver is consistently slow. It's a chicken and egg problem. Instead, simply check if HW timestamping is enabled on at least one interface. Responses from NTP sources on other interfaces will always be saved (for 1 millisecond by default).
73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Richard P. Curnow 1997-2002
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* Copyright (C) Miroslav Lichvar 2014
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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 NTP socket I/O bits.
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*/
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#ifndef GOT_NTP_IO_H
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#define GOT_NTP_IO_H
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#include "ntp.h"
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#include "addressing.h"
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#include "socket.h"
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/* Function to initialise the module. */
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extern void NIO_Initialise(void);
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/* Function to finalise the module */
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extern void NIO_Finalise(void);
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/* Function to check if HW timestamping is enabled on any interface */
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extern int NIO_IsHwTsEnabled(void);
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/* Function to obtain a socket for sending client packets */
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extern int NIO_OpenClientSocket(NTP_Remote_Address *remote_addr);
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/* Function to obtain a socket for sending server/peer packets */
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extern int NIO_OpenServerSocket(NTP_Remote_Address *remote_addr);
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/* Function to close a socket returned by NIO_OpenClientSocket() */
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extern void NIO_CloseClientSocket(int sock_fd);
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/* Function to close a socket returned by NIO_OpenServerSocket() */
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extern void NIO_CloseServerSocket(int sock_fd);
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/* Function to check if socket is a server socket */
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extern int NIO_IsServerSocket(int sock_fd);
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/* Function to check if a server socket is currently open */
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extern int NIO_IsServerSocketOpen(void);
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/* Function to check if client packets can be sent to a server */
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extern int NIO_IsServerConnectable(NTP_Remote_Address *remote_addr);
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/* Function to unwrap an NTP message from non-native transport (e.g. PTP) */
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extern int NIO_UnwrapMessage(SCK_Message *message, int sock_fd);
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/* Function to transmit a packet */
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extern int NIO_SendPacket(NTP_Packet *packet, NTP_Remote_Address *remote_addr,
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NTP_Local_Address *local_addr, int length, int process_tx);
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#endif /* GOT_NTP_IO_H */
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