From af380e861745517c2089a439116a28e4ea1ef225 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 1 Nov 2011 17:32:40 +0100 Subject: [PATCH] Add the license, a readme, and some header files. This commit gets the project off to a good start. The header files provide some basic data types and definitions. The README file will most probably grow over time. Signed-off-by: Richard Cochran --- COPYING | 339 +++++++++++++++++++++++++++++++++++++++++++++++++++++ README.org | 47 ++++++++ ddt.h | 83 +++++++++++++ ds.h | 79 +++++++++++++ missing.h | 52 ++++++++ pdt.h | 39 ++++++ 6 files changed, 639 insertions(+) create mode 100644 COPYING create mode 100644 README.org create mode 100644 ddt.h create mode 100644 ds.h create mode 100644 missing.h create mode 100644 pdt.h diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..d159169 --- /dev/null +++ b/COPYING @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + 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. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/README.org b/README.org new file mode 100644 index 0000000..0395dfe --- /dev/null +++ b/README.org @@ -0,0 +1,47 @@ + +* Introduction + + This software is an implementation of the Precision Time Protocol + (PTP) according to IEEE standard 1588 for Linux. The dual design + goals are to provide a robust implementation of the standard and to + use the most relevant and modern Application Programming Interfaces + (API) offered by the Linux kernel. Supporting legacy APIs and other + platforms is not a goal. + +* License + + The software is copyrighted by the authors and is licensed under the + GNU General Public License. See the file, COPYING, for details of + the license terms. + +* Goals and Features + + - Supports hardware and software time stamping via the Linux + SO_TIMESTAMPING socket option. + + - Supports the Linux PTP Hardware Clock (PHC) subsystem by using the + clock_gettime family of calls, including the new clock_adjtimex + system call. + + - Implements Boundary Clock (BC) and Ordinary Clock (OC). + + - Transport over UDP/IPv4, UDP/IPv6, and raw Ethernet (Layer 2). + + - Modular design allowing painless addition of new transports and + clock servos. + +* Getting Involved + + The software development is hosted at Source Forge. + + https://sourceforge.net/projects/linuxptp/ + +** Reporting Bugs + + Please report any bugs or other issues with the software to the + linuxptp-users mailing list. + +** Development + + If you would like to get involved in improving the software, please + join the linuxptp-devel mailing list. diff --git a/ddt.h b/ddt.h new file mode 100644 index 0000000..5a202eb --- /dev/null +++ b/ddt.h @@ -0,0 +1,83 @@ +/** + * @file ddt.h + * @brief Derived data types + * @note Copyright (C) 2011 Richard Cochran + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + */ +#ifndef HAVE_DDT_H +#define HAVE_DDT_H + +#include "pdt.h" + +#define PACKED __attribute__((packed)) + +typedef Integer64 TimeInterval; /* nanoseconds << 16 */ + +/** On the wire time stamp format. */ +struct Timestamp { + uint16_t seconds_msb; /* 16 bits + */ + uint32_t seconds_lsb; /* 32 bits = 48 bits*/ + UInteger32 nanoseconds; +} PACKED; + +/** Internal binary time stamp format. */ +struct timestamp { + uint64_t sec; + UInteger32 nsec; +}; + +struct ClockIdentity { + Octet id[8]; +}; + +struct PortIdentity { + struct ClockIdentity clockIdentity; + UInteger16 portNumber; +} PACKED; + +struct PortAddress { + Enumeration16 networkProtocol; + UInteger16 addressLength; + Octet *address; +}; + +struct ClockQuality { + UInteger8 clockClass; + Enumeration8 clockAccuracy; + UInteger16 offsetScaledLogVariance; +} PACKED; + +struct TLV { + Enumeration16 tlvType; + UInteger16 length; /* must be even */ + Octet *value; +}; + +struct PTPText { + UInteger8 length; + Octet *text; +}; + +struct FaultRecord { + UInteger16 faultRecordLength; + struct Timestamp faultTime; + Enumeration8 severityCode; + struct PTPText faultName; + struct PTPText faultValue; + struct PTPText faultDescription; +}; + +#endif diff --git a/ds.h b/ds.h new file mode 100644 index 0000000..b9c7810 --- /dev/null +++ b/ds.h @@ -0,0 +1,79 @@ +/** + * @file ds.h + * @brief Data sets + * @note Copyright (C) 2011 Richard Cochran + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + */ +#ifndef HAVE_DS_H +#define HAVE_DS_H + +#include "ddt.h" + +/* clock data sets */ + +struct defaultDS { + Boolean twoStepFlag; + Boolean slaveOnly; + UInteger16 numberPorts; + UInteger8 priority1; + struct ClockQuality clockQuality; + UInteger8 priority2; + struct ClockIdentity clockIdentity; + UInteger8 domainNumber; +}; + +struct dataset { + UInteger8 priority1; + struct ClockIdentity identity; + struct ClockQuality quality; + UInteger8 priority2; + UInteger16 stepsRemoved; + struct PortIdentity sender; + struct PortIdentity receiver; +}; + +struct currentDS { + UInteger16 stepsRemoved; + TimeInterval offsetFromMaster; + TimeInterval meanPathDelay; +}; + +struct parentDS { + struct PortIdentity parentPortIdentity; + Boolean parentStats; + UInteger16 observedParentOffsetScaledLogVariance; + Integer32 observedParentClockPhaseChangeRate; + UInteger8 grandmasterPriority1; + struct ClockQuality grandmasterClockQuality; + UInteger8 grandmasterPriority2; + struct ClockIdentity grandmasterIdentity; +}; + +#define CURRENT_UTC_OFFSET 33 +#define INTERNAL_OSCILLATOR 0xA0 + +struct timePropertiesDS { + Integer16 currentUtcOffset; + Boolean leap61; + Boolean leap59; + Boolean currentUtcOffsetValid; + Boolean ptpTimescale; + Boolean timeTraceable; + Boolean frequencyTraceable; + Enumeration8 timeSource; +}; + +#endif diff --git a/missing.h b/missing.h new file mode 100644 index 0000000..45dcb2d --- /dev/null +++ b/missing.h @@ -0,0 +1,52 @@ +/** + * @file missing.h + * @note Copyright (C) 2011 Richard Cochran + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + */ + +/* + * When glibc offers the syscall, this will go away. + */ +#ifndef HAVE_MISSING_H +#define HAVE_MISSING_H + +#include +#include +#include +#include + +#ifndef ADJ_NANO +#define ADJ_NANO 0x2000 +#endif + +#ifndef ADJ_SETOFFSET +#define ADJ_SETOFFSET 0x0100 +#endif + +#ifndef CLOCK_INVALID +#define CLOCK_INVALID -1 +#endif + +#define CLOCKFD 3 +#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) +#define CLOCKID_TO_FD(clk) ((unsigned int) ~((clk) >> 3)) + +static inline int clock_adjtime(clockid_t id, struct timex *tx) +{ + return syscall(__NR_clock_adjtime, id, tx); +} + +#endif diff --git a/pdt.h b/pdt.h new file mode 100644 index 0000000..29ffbb5 --- /dev/null +++ b/pdt.h @@ -0,0 +1,39 @@ +/** + * @file pdt.h + * @brief Primitive data types + * @note Copyright (C) 2011 Richard Cochran + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + */ +#ifndef HAVE_PDT_H +#define HAVE_PDT_H + +#include + +enum {FALSE, TRUE}; + +typedef int Boolean; +typedef uint8_t Enumeration8; +typedef uint16_t Enumeration16; +typedef int8_t Integer8; +typedef uint8_t UInteger8; +typedef int16_t Integer16; +typedef uint16_t UInteger16; +typedef int32_t Integer32; +typedef uint32_t UInteger32; +typedef int64_t Integer64; +typedef uint8_t Octet; + +#endif