Commit d9b6577d authored by Luotao Fu's avatar Luotao Fu

initial create libsocketcan-nl project

Signed-off-by: 's avatarLuotao Fu <l.fu@pengutronix.de>
parents
SUBDIRS = \
include \
config \
src \
tests
EXTRA_DIST = \
autogen.sh \
config/m4/.secret-world-domination-project
MAINTAINERCLEANFILES = \
configure \
GNUmakefile.in \
aclocal.m4 \
config/autoconf/compile \
config/autoconf/config.guess \
config/autoconf/config.sub \
config/autoconf/depcomp \
config/autoconf/install-sh \
config/autoconf/ltmain.sh \
config/autoconf/mdate-sh \
config/autoconf/missing \
config/autoconf/texinfo.tex \
config/m4/libtool.m4 \
config/m4/ltoptions.m4 \
config/m4/ltsugar.m4 \
config/m4/ltversion.m4 \
config/m4/lt~obsolete.m4 \
$(DIST_ARCHIVES)
maintainer-clean-local:
-chmod -R a+rw $(distdir)
-rm -fr $(distdir)
#!/bin/bash
#
# usage:
#
# banner <target name>
#
banner() {
echo
TG=`echo $1 | sed -e "s,/.*/,,g"`
LINE=`echo $TG |sed -e "s/./-/g"`
echo $LINE
echo $TG
echo $LINE
echo
}
ACLOCAL=${ACLOCAL:=aclocal}
AUTOHEADER=${AUTOHEADER:=autoheader}
AUTOMAKE=${AUTOMAKE:=automake}
AUTOCONF=${AUTOCONF:=autoconf}
banner "running libtoolize"
libtoolize --force
[ $? != 0 ] && exit
banner "running aclocal"
$ACLOCAL -I config/m4
[ $? != 0 ] && exit
banner "running autoheader"
$AUTOHEADER
[ $? != 0 ] && exit
banner "running automake"
$AUTOMAKE --gnu --add-missing -Wall
[ $? != 0 ] && exit
banner "running autoconf"
$AUTOCONF -Wall
[ $? != 0 ] && exit
banner "Finished"
#!/bin/bash
#
# usage:
#
# banner <target name>
#
banner() {
echo
TG=`echo $1 | sed -e "s,/.*/,,g"`
LINE=`echo $TG |sed -e "s/./-/g"`
echo $LINE
echo $TG
echo $LINE
echo
}
banner "autoreconf"
autoreconf --force --install --symlink -Wall || exit $?
banner "Finished"
EXTRA_DIST = \
libsocketcan-nl.pc.in
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libsocketcan-nl.pc
MAINTAINERCLEANFILES = \
GNUmakefile.in
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: libsocketcan-nl
Description: provides access to socketcan netlink interface
Requires: @REQUIRES_LIBRN@
Version: @VERSION@
Libs: -L${libdir} -llibsocketcan-nl
#Libs.private: -lm -lpthread ...etc...
Cflags: -I${includedir}
dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
dnl
dnl @summary figure out how to build C programs using POSIX threads
dnl
dnl This macro figures out how to build C programs using POSIX threads.
dnl It sets the PTHREAD_LIBS output variable to the threads library and
dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
dnl C compiler flags that are needed. (The user can also force certain
dnl compiler flags/libs to be tested by setting these environment
dnl variables.)
dnl
dnl Also sets PTHREAD_CC to any special C compiler that is needed for
dnl multi-threaded programs (defaults to the value of CC otherwise).
dnl (This is necessary on AIX to use the special cc_r compiler alias.)
dnl
dnl NOTE: You are assumed to not only compile your program with these
dnl flags, but also link it with them as well. e.g. you should link
dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
dnl $LIBS
dnl
dnl If you are only building threads programs, you may wish to use
dnl these variables in your default LIBS, CFLAGS, and CC:
dnl
dnl LIBS="$PTHREAD_LIBS $LIBS"
dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
dnl CC="$PTHREAD_CC"
dnl
dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
dnl
dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
dnl default action will define HAVE_PTHREAD.
dnl
dnl Please let the authors know if this macro fails on any platform, or
dnl if you have any other suggestions or comments. This macro was based
dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
dnl We are also grateful for the helpful feedback of numerous users.
dnl
dnl @category InstalledPackages
dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
dnl @version 2005-06-15
dnl @license GPLWithACException
AC_DEFUN([ACX_PTHREAD], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_LANG_SAVE
AC_LANG_C
acx_pthread_ok=no
# We used to check for pthread.h first, but this fails if pthread.h
# requires special compiler flags (e.g. on True64 or Sequent).
# It gets checked for in the link test anyway.
# First of all, check if the user has set any of the PTHREAD_LIBS,
# etcetera environment variables, and if threads linking works using
# them:
if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
AC_MSG_RESULT($acx_pthread_ok)
if test x"$acx_pthread_ok" = xno; then
PTHREAD_LIBS=""
PTHREAD_CFLAGS=""
fi
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
fi
# We must check for the threads library under a number of different
# names; the ordering is very important because some systems
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
# libraries is broken (non-POSIX).
# Create a list of thread flags to try. Items starting with a "-" are
# C compiler flags, and other items are library names, except for "none"
# which indicates that we try without any flags at all, and "pthread-config"
# which is a program returning the flags for the Pth emulation library.
acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
# The ordering *is* (sometimes) important. Some notes on the
# individual items follow:
# pthreads: AIX (must check this before -lpthread)
# none: in case threads are in libc; should be tried before -Kthread and
# other compiler flags to prevent continual compiler warnings
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
# -pthreads: Solaris/gcc
# -mthreads: Mingw32/gcc, Lynx/gcc
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
# doesn't hurt to check since this sometimes defines pthreads too;
# also defines -D_REENTRANT)
# ... -mt is also the pthreads flag for HP/aCC
# pthread: Linux, etcetera
# --thread-safe: KAI C++
# pthread-config: use pthread-config program (for GNU Pth library)
case "${host_cpu}-${host_os}" in
*solaris*)
# On Solaris (at least, for some versions), libc contains stubbed
# (non-functional) versions of the pthreads routines, so link-based
# tests will erroneously succeed. (We need to link with -pthreads/-mt/
# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
# a function called by this macro, so we could check for that, but
# who knows whether they'll stub that too in a future libc.) So,
# we'll just look for -pthreads and -lpthread first:
acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
;;
esac
if test x"$acx_pthread_ok" = xno; then
for flag in $acx_pthread_flags; do
case $flag in
none)
AC_MSG_CHECKING([whether pthreads work without any flags])
;;
-*)
AC_MSG_CHECKING([whether pthreads work with $flag])
PTHREAD_CFLAGS="$flag"
;;
pthread-config)
AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
if test x"$acx_pthread_config" = xno; then continue; fi
PTHREAD_CFLAGS="`pthread-config --cflags`"
PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
;;
*)
AC_MSG_CHECKING([for the pthreads library -l$flag])
PTHREAD_LIBS="-l$flag"
;;
esac
save_LIBS="$LIBS"
save_CFLAGS="$CFLAGS"
LIBS="$PTHREAD_LIBS $LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
# Check for various functions. We must include pthread.h,
# since some functions may be macros. (On the Sequent, we
# need a special flag -Kthread to make this header compile.)
# We check for pthread_join because it is in -lpthread on IRIX
# while pthread_create is in libc. We check for pthread_attr_init
# due to DEC craziness with -lpthreads. We check for
# pthread_cleanup_push because it is one of the few pthread
# functions on Solaris that doesn't have a non-functional libc stub.
# We try pthread_create on general principles.
AC_TRY_LINK([#include <pthread.h>],
[pthread_t th; pthread_join(th, 0);
pthread_attr_init(0); pthread_cleanup_push(0, 0);
pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
[acx_pthread_ok=yes])
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
AC_MSG_RESULT($acx_pthread_ok)
if test "x$acx_pthread_ok" = xyes; then
break;
fi
PTHREAD_LIBS=""
PTHREAD_CFLAGS=""
done
fi
# Various other checks:
if test "x$acx_pthread_ok" = xyes; then
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
AC_MSG_CHECKING([for joinable pthread attribute])
attr_name=unknown
for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
[attr_name=$attr; break])
done
AC_MSG_RESULT($attr_name)
if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
[Define to necessary symbol if this constant
uses a non-standard name on your system.])
fi
AC_MSG_CHECKING([if more special flags are required for pthreads])
flag=no
case "${host_cpu}-${host_os}" in
*-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
*solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
esac
AC_MSG_RESULT(${flag})
if test "x$flag" != xno; then
PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
fi
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
# More AIX lossage: must compile with cc_r
AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
else
PTHREAD_CC="$CC"
fi
AC_SUBST(PTHREAD_LIBS)
AC_SUBST(PTHREAD_CFLAGS)
AC_SUBST(PTHREAD_CC)
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x"$acx_pthread_ok" = xyes; then
ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
:
else
acx_pthread_ok=no
$2
fi
AC_LANG_RESTORE
])dnl ACX_PTHREAD
# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)
AC_INIT([libsocketcan-nl], [0.0.1], [bugs@pengutronix.de])
AC_CONFIG_HEADERS([include/libsocketcan-nl_config.h])
AC_CONFIG_SRCDIR([src/socketcan_netlink.c])
AC_CONFIG_MACRO_DIR([config/m4])
AC_CONFIG_AUX_DIR([config/autoconf])
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AM_MAINTAINER_MODE
CFLAGS="${CFLAGS} -Wall"
#
# libtool library versioning stuff
#
# Library code modified: REVISION++
# Interfaces changed/added/removed: CURRENT++ REVISION=0
# Interfaces added: AGE++
# Interfaces removed: AGE=0
LT_CURRENT=0
LT_REVISION=0
LT_AGE=0
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)
#
# Checks for programs.
#
AC_PROG_CC
#AM_MISSING_PROG(PERL, perl, $missing_dir)
# libtool, old:
AC_LIBTOOL_WIN32_DLL
#AC_LIBTOOL_TAGS([])
AC_PROG_LIBTOOL
# libtool, new:
# LT_INIT(win32-dll)
AM_INIT_AUTOMAKE([foreign no-exeext dist-bzip2])
#
# Checks for libraries.
#
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([ \
arpa/inet.h \
limits.h \
netdb.h \
netinet/in.h \
stddef.h \
stdlib.h \
string.h \
sys/param.h \
sys/socket.h \
sys/time.h \
sys/un.h \
unistd.h \
utime.h \
net/if.h \
linux/netlink.h \
linux/rtnetlink.h \
])
#
# Checks for typedefs, structures, and compiler characteristics.
#
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_HEADER_TIME
#
# Checks for library functions.
#
AC_FUNC_MEMCMP
AC_TYPE_SIGNAL
AC_FUNC_STAT
AC_FUNC_UTIME_NULL
AC_CHECK_FUNCS([gethostbyaddr gethostbyname gethostname gettimeofday memset mkdir socket utime])
#
# Debugging
#
AC_MSG_CHECKING([whether to enable debugging])
AC_ARG_ENABLE(debug,
AS_HELP_STRING([--enable-debug], [enable debugging @<:@default=yes@:>@]),
[case "$enableval" in
y | yes) CONFIG_DEBUG=yes ;;
*) CONFIG_DEBUG=no ;;
esac],
[CONFIG_DEBUG=yes])
AC_MSG_RESULT([${CONFIG_DEBUG}])
if test "${CONFIG_DEBUG}" = "yes"; then
CFLAGS="${CFLAGS} -Werror -Wsign-compare -Wfloat-equal -Wformat-security -g -O1"
AC_DEFINE(DEBUG, 1, [debugging])
else
CFLAGS="${CFLAGS} -O2"
fi
AC_CONFIG_FILES([
GNUmakefile
config/libsocketcan-nl.pc
config/GNUmakefile
include/GNUmakefile
src/GNUmakefile
tests/GNUmakefile
])
AC_OUTPUT
noinst_HEADERS = \
libsocketcan-nlstuff.h
nobase_include_HEADERS = \
socketcan_netlink.h
MAINTAINERCLEANFILES = \
libsocketcan-nl_config.h.in \
GNUmakefile.in
/*
* linux/can/netlink.h
*
* Definitions for the CAN netlink interface
*
* Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com>
*
* Send feedback to <socketcan-users@lists.berlios.de>
*
*/
#ifndef CAN_NETLINK_H
#define CAN_NETLINK_H
#include <linux/types.h>
/*
* CAN bit-timing parameters
*
* For futher information, please read chapter "8 BIT TIMING
* REQUIREMENTS" of the "Bosch CAN Specification version 2.0"
* at http://www.semiconductors.bosch.de/pdf/can2spec.pdf.
*/
struct can_bittiming {
__u32 bitrate; /* Bit-rate in bits/second */
__u32 sample_point; /* Sample point in one-tenth of a percent */
__u32 tq; /* Time quanta (TQ) in nanoseconds */
__u32 prop_seg; /* Propagation segment in TQs */
__u32 phase_seg1; /* Phase buffer segment 1 in TQs */
__u32 phase_seg2; /* Phase buffer segment 2 in TQs */
__u32 sjw; /* Synchronisation jump width in TQs */
__u32 brp; /* Bit-rate prescaler */
};
/*
* CAN harware-dependent bit-timing constant
*
* Used for calculating and checking bit-timing parameters
*/
struct can_bittiming_const {
char name[16]; /* Name of the CAN controller hardware */
__u32 tseg1_min; /* Time segement 1 = prop_seg + phase_seg1 */
__u32 tseg1_max;
__u32 tseg2_min; /* Time segement 2 = phase_seg2 */
__u32 tseg2_max;
__u32 sjw_max; /* Synchronisation jump width */
__u32 brp_min; /* Bit-rate prescaler */
__u32 brp_max;
__u32 brp_inc;
};
/*
* CAN clock parameters
*/
struct can_clock {
__u32 freq; /* CAN system clock frequency in Hz */
};
/*
* CAN operational and error states
*/
enum can_state {
CAN_STATE_ERROR_ACTIVE = 0, /* RX/TX error count < 96 */
CAN_STATE_ERROR_WARNING, /* RX/TX error count < 128 */
CAN_STATE_ERROR_PASSIVE, /* RX/TX error count < 256 */
CAN_STATE_BUS_OFF, /* RX/TX error count >= 256 */
CAN_STATE_STOPPED, /* Device is stopped */
CAN_STATE_SLEEPING, /* Device is sleeping */
CAN_STATE_MAX
};
/*
* CAN controller mode
*/
struct can_ctrlmode {
__u32 mask;
__u32 flags;
};
#define CAN_CTRLMODE_LOOPBACK 0x1 /* Loopback mode */
#define CAN_CTRLMODE_LISTENONLY 0x2 /* Listen-only mode */
#define CAN_CTRLMODE_3_SAMPLES 0x4 /* Triple sampling mode */
/*
* CAN device statistics
*/
struct can_device_stats {
__u32 bus_error; /* Bus errors */
__u32 error_warning; /* Changes to error warning state */
__u32 error_passive; /* Changes to error passive state */
__u32 bus_off; /* Changes to bus off state */
__u32 arbitration_lost; /* Arbitration lost errors */
__u32 restarts; /* CAN controller re-starts */
};
/*
* CAN netlink interface
*/
enum {
IFLA_CAN_UNSPEC,
IFLA_CAN_BITTIMING,
IFLA_CAN_BITTIMING_CONST,
IFLA_CAN_CLOCK,
IFLA_CAN_STATE,
IFLA_CAN_CTRLMODE,
IFLA_CAN_RESTART_MS,
IFLA_CAN_RESTART,
__IFLA_CAN_MAX
};
#define IFLA_CAN_MAX (__IFLA_CAN_MAX - 1)
#endif /* CAN_NETLINK_H */
#ifndef LIBSOCKETCAN-NL_H
#define LIBSOCKETCAN-NL_H
#endif
#ifndef LIBSOCKETCAN-NL_H
#define LIBSOCKETCAN-NL_H
#endif
/*
* Header file for CAN netlink support
* (C) 2009 Luotao Fu <l.fu@pengutronix.de>
*/
#ifndef _NMS_H
#define _NMS_H
#define IFLA_CAN_MAX (__IFLA_CAN_MAX - 1)
#define IF_UP 1
#define IF_DOWN 2
#define GET_STATE 1
#define GET_RESTART_MS 2
#define GET_BITTIMING 3
struct get_req {
struct nlmsghdr n;
struct rtgenmsg g;
};
struct set_req {
struct nlmsghdr n;
struct ifinfomsg i;
char buf[1024];
};
struct req_info {
__u8 restart;
__u8 disable_autorestart;
__u32 restart_ms;
__u32 bitrate;
__u32 ctrlmode;
__u32 flags;
};
int if_down(int fd, const char *name);
int if_up(int fd, const char *name);
int set_link_can(const char *name, struct req_info *req_info);
int set_restart(const char *name);
int set_bitrate(const char *name, __u32 bitrate);
int set_restart_ms(const char *name, __u32 restart_ms);
int get_state(const char *name);
__u32 get_restart_ms(const char *name);
int get_bittiming(const char *name, struct can_bittiming *bt);
#endif
lib_LTLIBRARIES = libsocketcan-nl.la
AM_CPPFLAGS = \
-I$(top_srcdir)/include \
-I$(top_builddir)/include
libsocketcan_nl_la_SOURCES = socketcan_netlink.c
libsocketcan_nl_la_LDFLAGS = \
-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
# -no-undefined # win32_dll stuff only
#libsocketcan-nl_LDADD = \
# $(librn_LIBS)
#
MAINTAINERCLEANFILES = \
GNUmakefile.in
This diff is collapsed.
TESTS = \
test
noinst_PROGRAMS = \
test
test_SOURCES = \
test.c
test_LDADD = \
$(top_builddir)/src/libsocketcan-nl.la
AM_CPPFLAGS = \
-I$(top_srcdir)/include \
-I$(top_builddir)/include
MAINTAINERCLEANFILES = \
GNUmakefile.in
#include <stdio.h>
int main(void)
{
printf("hallo\n");
return 0;
}
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