chrony/ntp_io_linux.h
Miroslav Lichvar 3ea3e0efd7 ntp: add support for multiple suspended sockets
With some hardware it takes milliseconds to get the HW TX timestamp.

Rework the code to handle multiple suspended client-only sockets at the
same time in order to allow longer timeouts, which may overlap for
different sources. Instead of waiting for the first read event simply
suspend the socket and create timeout when the HW TX timestamp is
requested.
2023-03-09 15:49:43 +01:00

45 lines
1.6 KiB
C

/*
chronyd/chronyc - Programs for keeping computer clocks accurate.
**********************************************************************
* Copyright (C) Miroslav Lichvar 2016
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************
=======================================================================
This is the header file for the Linux-specific NTP socket I/O bits.
*/
#ifndef GOT_NTP_IO_LINUX_H
#define GOT_NTP_IO_LINUX_H
#include "socket.h"
extern void NIO_Linux_Initialise(void);
extern void NIO_Linux_Finalise(void);
extern int NIO_Linux_SetTimestampSocketOptions(int sock_fd, int client_only, int *events);
extern int NIO_Linux_ProcessMessage(SCK_Message *message, NTP_Local_Address *local_addr,
NTP_Local_Timestamp *local_ts, int event);
extern void NIO_Linux_RequestTxTimestamp(SCK_Message *message, int sock_fd);
extern void NIO_Linux_NotifySocketClosing(int sock_fd);
#endif