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diff --git a/configure.ac b/configure.ac
index 934d7cae..a213eef9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,386 +1,394 @@
#
# Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
#
# Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
# Federico Simoncelli <fsimon@kronosnet.org>
#
# This software licensed under GPL-2.0+, LGPL-2.0+
#
# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
AC_PREREQ([2.63])
AC_INIT([kronosnet],
m4_esyscmd([build-aux/git-version-gen .tarball-version]),
[devel@lists.kronosnet.org])
AC_USE_SYSTEM_EXTENSIONS
AM_INIT_AUTOMAKE([1.11.1 dist-bzip2 dist-xz color-tests -Wno-portability])
# Usage of subdir-objects breaks make maintainer-clean targets.
# Not using it spits out some warnings at ./autogen time and we can live with those for now
# AM_INIT_AUTOMAKE([1.11.1 dist-bzip2 dist-xz color-tests -Wno-portability subdir-objects])
LT_PREREQ([2.2.6])
LT_INIT
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([kronosnetd/main.c])
AC_CONFIG_HEADERS([config.h])
AC_CANONICAL_HOST
AC_PROG_LIBTOOL
AC_LANG([C])
systemddir=${prefix}/lib/systemd/system
if test "$prefix" = "NONE"; then
prefix="/usr"
if test "$localstatedir" = "\${prefix}/var"; then
localstatedir="/var"
fi
if test "$sysconfdir" = "\${prefix}/etc"; then
sysconfdir="/etc"
fi
if test "$systemddir" = "NONE/lib/systemd/system"; then
systemddir=/lib/systemd/system
fi
if test "$libdir" = "\${exec_prefix}/lib"; then
if test -e /usr/lib64; then
libdir="/usr/lib64"
else
libdir="/usr/lib"
fi
fi
fi
# Checks for programs.
if ! ${MAKE-make} --version /cannot/make/this >/dev/null 2>&1; then
AC_MSG_ERROR(["you don't seem to have GNU make; it is required"])
fi
AC_PROG_AWK
AC_PROG_GREP
AC_PROG_SED
AC_PROG_CPP
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_LN_S
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_CXX
AC_PROG_RANLIB
AC_CHECK_PROGS([PUBLICAN], [publican], [:])
AC_CHECK_PROGS([PKGCONFIG], [pkg-config])
AC_ARG_ENABLE([kronosnetd],
[ --enable-kronosnetd : Kronosnetd support ],,
[ enable_kronosnetd="no" ])
AM_CONDITIONAL([BUILD_KRONOSNETD], test x$enable_kronosnetd = xyes)
AC_ARG_ENABLE([libtap],
[ --enable-libtap : libtap support ],,
[ enable_libtap="no" ])
if test "x$enable_kronosnetd" = xyes; then
enable_libtap=yes
fi
AM_CONDITIONAL([BUILD_LIBTAP], test x$enable_libtap = xyes)
+AC_ARG_ENABLE([libknet-sctp],
+ [ --enable-libknet-sctp : libknet SCTP support ],,
+ [ enable_libknet_sctp="yes" ])
+AM_CONDITIONAL([BUILD_LIBKNET_SCTP], test x$enable_libknet_sctp = xyes)
+
## local helper functions
# this function checks if CC support options passed as
# args. Global CFLAGS are ignored during this test.
cc_supports_flag() {
saveCPPFLAGS="$CPPFLAGS"
CPPFLAGS="$@"
if echo $CC | grep -q clang; then
CPPFLAGS="-Werror $CPPFLAGS"
fi
AC_MSG_CHECKING([whether $CC supports "$@"])
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([])],
[RC=0; AC_MSG_RESULT([yes])],
[RC=1; AC_MSG_RESULT([no])])
CPPFLAGS="$saveCPPFLAGS"
return $RC
}
# helper macro to check libs without adding them to LIBS
check_lib_no_libs() {
lib_no_libs_arg1=$1
shift
lib_no_libs_arg2=$1
shift
lib_no_libs_args=$@
AC_CHECK_LIB([$lib_no_libs_arg1],
[$lib_no_libs_arg2],,,
[$lib_no_libs_args])
LIBS=$ac_check_lib_save_LIBS
}
# Checks for C features
AC_C_INLINE
# Checks for libraries.
AC_CHECK_LIB([pthread], [pthread_create])
AC_CHECK_LIB([m], [ceil])
AC_CHECK_LIB([rt], [clock_gettime])
PKG_CHECK_MODULES([nss],[nss])
# Checks for header files.
AC_CHECK_HEADERS([fcntl.h])
AC_CHECK_HEADERS([stdlib.h])
AC_CHECK_HEADERS([string.h])
AC_CHECK_HEADERS([strings.h])
AC_CHECK_HEADERS([sys/ioctl.h])
AC_CHECK_HEADERS([syslog.h])
AC_CHECK_HEADERS([unistd.h])
AC_CHECK_HEADERS([netinet/in.h])
AC_CHECK_HEADERS([sys/socket.h])
AC_CHECK_HEADERS([arpa/inet.h])
AC_CHECK_HEADERS([netdb.h])
AC_CHECK_HEADERS([limits.h])
AC_CHECK_HEADERS([stdint.h])
+
+if test "x$enable_libknet_sctp" = xyes; then
AC_CHECK_HEADERS([netinet/sctp.h],, AC_MSG_ERROR(["missing required SCTP headers"]))
+fi
# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_INT32_T
# Checks for library functions.
AC_FUNC_ALLOCA
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_CHECK_FUNCS([memset])
AC_CHECK_FUNCS([strdup])
AC_CHECK_FUNCS([strerror])
AC_CHECK_FUNCS([dup2])
AC_CHECK_FUNCS([select])
AC_CHECK_FUNCS([socket])
AC_CHECK_FUNCS([inet_ntoa])
AC_CHECK_FUNCS([memmove])
AC_CHECK_FUNCS([strchr])
AC_CHECK_FUNCS([atexit])
AC_CHECK_FUNCS([ftruncate])
AC_CHECK_FUNCS([strrchr])
AC_CHECK_FUNCS([strstr])
AC_CHECK_FUNCS([clock_gettime])
AC_CHECK_FUNCS([strcasecmp])
AC_CHECK_FUNCS([sendmmsg])
AC_CHECK_FUNCS([recvmmsg])
# Check entries in specific structs
AC_CHECK_MEMBER([struct mmsghdr.msg_hdr],
[AC_DEFINE_UNQUOTED([HAVE_MMSGHDR], [1], [struct mmsghdr exists])],
[], [[#include <sys/socket.h>]])
# checks (for kronosnetd)
if test "x$enable_kronosnetd" = xyes; then
AC_CHECK_HEADERS([security/pam_appl.h],
[AC_CHECK_LIB([pam], [pam_start])],
[AC_MSG_ERROR([Unable to find LinuxPAM devel files])])
AC_CHECK_HEADERS([security/pam_misc.h],
[AC_CHECK_LIB([pam_misc], [misc_conv])],
[AC_MSG_ERROR([Unable to find LinuxPAM MISC devel files])])
PKG_CHECK_MODULES([libqb], [libqb])
AC_CHECK_LIB([qb], [qb_log_thread_priority_set],
[have_qb_log_thread_priority_set="yes"],
[have_qb_log_thread_priority_set="no"])
if test "x${have_qb_log_thread_priority_set}" = xyes; then
AC_DEFINE_UNQUOTED([HAVE_QB_LOG_THREAD_PRIORITY_SET], 1, [have qb_log_thread_priority_set])
fi
fi
# local options
AC_ARG_ENABLE([debug],
[ --enable-debug enable debug build. ],
[ default="no" ])
AC_ARG_ENABLE([publicandocs],
[ --enable-publicandocs enable docs build. ],
[ default="no" ])
AC_ARG_WITH([initdefaultdir],
[ --with-initdefaultdir : path to /etc/sysconfig/.. or /etc/default dir. ],
[ INITDEFAULTDIR="$withval" ],
[ INITDEFAULTDIR="$sysconfdir/default" ])
AC_ARG_WITH([initddir],
[ --with-initddir=DIR : path to init script directory. ],
[ INITDDIR="$withval" ],
[ INITDDIR="$sysconfdir/init.d" ])
AC_ARG_WITH([systemddir],
[ --with-systemddir=DIR : path to systemd unit files directory. ],
[ SYSTEMDDIR="$withval" ],
[ SYSTEMDDIR="$systemddir" ])
AC_ARG_WITH([syslogfacility],
[ --with-syslogfacility=FACILITY
default syslog facility. ],
[ SYSLOGFACILITY="$withval" ],
[ SYSLOGFACILITY="LOG_DAEMON" ])
AC_ARG_WITH([sysloglevel],
[ --with-sysloglevel=LEVEL
default syslog level. ],
[ SYSLOGLEVEL="$withval" ],
[ SYSLOGLEVEL="LOG_INFO" ])
AC_ARG_WITH([defaultadmgroup],
[ --with-defaultadmgroup=GROUP
define PAM group. Users part of this group will be
allowed to configure kronosnet. Others will only
receive read-only rights. ],
[ DEFAULTADMGROUP="$withval" ],
[ DEFAULTADMGROUP="kronosnetadm" ])
## random vars
LOGDIR=${localstatedir}/log/
RUNDIR=${localstatedir}/run/
DEFAULT_CONFIG_DIR=${sysconfdir}/kronosnet
## do subst
AM_CONDITIONAL([BUILD_DOCS], [test "x${enable_publicandocs}" = xyes])
AM_CONDITIONAL([DEBUG], [test "x${enable_debug}" = xyes])
AC_SUBST([DEFAULT_CONFIG_DIR])
AC_SUBST([INITDEFAULTDIR])
AC_SUBST([INITDDIR])
AC_SUBST([SYSTEMDDIR])
AC_SUBST([LOGDIR])
AC_SUBST([DEFAULTADMGROUP])
AC_DEFINE_UNQUOTED([DEFAULT_CONFIG_DIR],
["$(eval echo ${DEFAULT_CONFIG_DIR})"],
[Default config directory])
AC_DEFINE_UNQUOTED([DEFAULT_CONFIG_FILE],
["$(eval echo ${DEFAULT_CONFIG_DIR}/kronosnetd.conf)"],
[Default config file])
AC_DEFINE_UNQUOTED([LOGDIR],
["$(eval echo ${LOGDIR})"],
[Default logging directory])
AC_DEFINE_UNQUOTED([DEFAULT_LOG_FILE],
["$(eval echo ${LOGDIR}/kronosnetd.log)"],
[Default log file])
AC_DEFINE_UNQUOTED([RUNDIR],
["$(eval echo ${RUNDIR})"],
[Default run directory])
AC_DEFINE_UNQUOTED([SYSLOGFACILITY],
[$(eval echo ${SYSLOGFACILITY})],
[Default syslog facility])
AC_DEFINE_UNQUOTED([SYSLOGLEVEL],
[$(eval echo ${SYSLOGLEVEL})],
[Default syslog level])
AC_DEFINE_UNQUOTED([DEFAULTADMGROUP],
["$(eval echo ${DEFAULTADMGROUP})"],
[Default admin group])
## *FLAGS handling
ENV_CFLAGS="$CFLAGS"
ENV_CPPFLAGS="$CPPFLAGS"
ENV_LDFLAGS="$LDFLAGS"
# debug build stuff
if test "x${enable_debug}" = xyes; then
AC_DEFINE_UNQUOTED([DEBUG], [1], [Compiling Debugging code])
OPT_CFLAGS="-O0"
else
OPT_CFLAGS="-O3"
fi
# gdb flags
if test "x${GCC}" = xyes; then
GDB_FLAGS="-ggdb3"
else
GDB_FLAGS="-g"
fi
# extra warnings
EXTRA_WARNINGS=""
WARNLIST="
all
shadow
missing-prototypes
missing-declarations
strict-prototypes
declaration-after-statement
pointer-arith
write-strings
cast-align
bad-function-cast
missing-format-attribute
format=2
format-security
format-nonliteral
no-long-long
unsigned-char
gnu89-inline
no-strict-aliasing
error
address
cpp
overflow
parentheses
sequence-point
switch
uninitialized
unused-but-set-variable
unused-function
unused-result
unused-value
unused-variable
"
for j in $WARNLIST; do
if cc_supports_flag -W$j; then
EXTRA_WARNINGS="$EXTRA_WARNINGS -W$j";
fi
done
CFLAGS="$ENV_CFLAGS $lt_prog_compiler_pic $OPT_CFLAGS $GDB_FLAGS \
$EXTRA_WARNINGS $WERROR_CFLAGS"
CPPFLAGS="$ENV_CPPFLAGS"
LDFLAGS="$ENV_LDFLAGS $lt_prog_compiler_pic -Wl,--as-needed"
AC_CONFIG_FILES([
Makefile
common/Makefile
init/Makefile
libtap/Makefile
libtap/libtap.pc
kronosnetd/Makefile
kronosnetd/kronosnetd.logrotate
libknet/Makefile
libknet/libknet.pc
libknet/tests/Makefile
docs/Makefile
poc-code/Makefile
poc-code/iov-hash/Makefile
poc-code/access-list/Makefile
])
AC_OUTPUT
diff --git a/libknet/Makefile.am b/libknet/Makefile.am
index daa1278e..84ac8882 100644
--- a/libknet/Makefile.am
+++ b/libknet/Makefile.am
@@ -1,84 +1,87 @@
#
# Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
#
# Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
# Federico Simoncelli <fsimon@kronosnet.org>
#
# This software licensed under GPL-2.0+, LGPL-2.0+
#
MAINTAINERCLEANFILES = Makefile.in
include $(top_srcdir)/build-aux/check.mk
SYMFILE = libknet_exported_syms
EXTRA_DIST = $(SYMFILE)
SUBDIRS = . tests
libversion = 0:0:0
# override global LIBS that pulls in lots of craft we don't need here
LIBS =
sources = \
common.c \
compat.c \
crypto.c \
handle.c \
host.c \
listener.c \
link.c \
logging.c \
nsscrypto.c \
threads_common.c \
threads_dsthandler.c \
threads_heartbeat.c \
threads_pmtud.c \
threads_send_recv.c \
transport_udp.c \
- transport_common.c \
- transport_sctp.c
+ transport_common.c
+
+if BUILD_LIBKNET_SCTP
+sources += transport_sctp.c
+endif
if DEBUG
sources += ../common/netutils.c
endif
include_HEADERS = libknet.h
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libknet.pc
noinst_HEADERS = \
common.h \
compat.h \
crypto.h \
host.h \
internals.h \
link.h \
listener.h \
logging.h \
nsscrypto.h \
onwire.h \
threads_common.h \
threads_dsthandler.h \
threads_heartbeat.h \
threads_pmtud.h \
threads_send_recv.h \
transports.h
lib_LTLIBRARIES = libknet.la
libknet_la_SOURCES = $(sources)
libknet_la_CFLAGS = $(nss_CFLAGS)
EXTRA_libknet_la_DEPENDENCIES = $(SYMFILE)
libknet_la_LDFLAGS = -Wl,--version-script=$(srcdir)/$(SYMFILE) \
--export-dynamic \
-version-number $(libversion)
libknet_la_LIBADD = $(nss_LIBS) -lrt -lpthread -lm
diff --git a/libknet/handle.c b/libknet/handle.c
index ba53b70b..a52fceb4 100644
--- a/libknet/handle.c
+++ b/libknet/handle.c
@@ -1,1467 +1,1469 @@
/*
* Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
*
* Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
* Federico Simoncelli <fsimon@kronosnet.org>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <sys/epoll.h>
#include <sys/uio.h>
#include <math.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "internals.h"
#include "crypto.h"
#include "common.h"
#include "threads_common.h"
#include "threads_heartbeat.h"
#include "threads_pmtud.h"
#include "threads_dsthandler.h"
#include "threads_send_recv.h"
#include "transports.h"
#include "logging.h"
static pthread_mutex_t handle_config_mutex = PTHREAD_MUTEX_INITIALIZER;
static int _init_locks(knet_handle_t knet_h)
{
int savederrno = 0;
savederrno = pthread_rwlock_init(&knet_h->global_rwlock, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize list rwlock: %s",
strerror(savederrno));
goto exit_fail;
}
knet_h->lock_init_done = 1;
savederrno = pthread_rwlock_init(&knet_h->listener_rwlock, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize listener rwlock: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_rwlock_init(&knet_h->host_rwlock, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize host rwlock: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_mutex_init(&knet_h->host_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize host mutex: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_cond_init(&knet_h->host_cond, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize host conditional mutex: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_mutex_init(&knet_h->pmtud_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize pmtud mutex: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_cond_init(&knet_h->pmtud_cond, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize pmtud conditional mutex: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_mutex_init(&knet_h->tx_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize tx_thread mutex: %s",
strerror(savederrno));
goto exit_fail;
}
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _destroy_locks(knet_handle_t knet_h)
{
knet_h->lock_init_done = 0;
pthread_rwlock_destroy(&knet_h->global_rwlock);
pthread_rwlock_destroy(&knet_h->listener_rwlock);
pthread_rwlock_destroy(&knet_h->host_rwlock);
pthread_mutex_destroy(&knet_h->host_mutex);
pthread_cond_destroy(&knet_h->host_cond);
pthread_mutex_destroy(&knet_h->pmtud_mutex);
pthread_cond_destroy(&knet_h->pmtud_cond);
pthread_mutex_destroy(&knet_h->tx_mutex);
}
static int _init_socketpair(knet_handle_t knet_h, int *sock)
{
int savederrno = 0;
int value;
int i;
if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, sock) != 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize socketpair: %s",
strerror(savederrno));
goto exit_fail;
}
for (i = 0; i < 2; i++) {
if (_fdset_cloexec(sock[i])) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set CLOEXEC on sock[%d]: %s",
i, strerror(savederrno));
goto exit_fail;
}
if (_fdset_nonblock(sock[i])) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set NONBLOCK on sock[%d]: %s",
i, strerror(savederrno));
goto exit_fail;
}
value = KNET_RING_RCVBUFF;
if (setsockopt(sock[i], SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set receive buffer on sock[%d]: %s",
i, strerror(savederrno));
goto exit_fail;
}
value = KNET_RING_RCVBUFF;
if (setsockopt(sock[i], SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set send buffer on sock[%d]: %s",
i, strerror(savederrno));
goto exit_fail;
}
}
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _close_socketpair(knet_handle_t knet_h, int *sock)
{
int i;
for (i = 0; i < 2; i++) {
if (sock[i]) {
close(sock[i]);
sock[i] = 0;
}
}
}
static int _init_socks(knet_handle_t knet_h)
{
int savederrno = 0;
if (_init_socketpair(knet_h, knet_h->hostsockfd)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize internal hostsockpair: %s",
strerror(savederrno));
goto exit_fail;
}
if (_init_socketpair(knet_h, knet_h->dstsockfd)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize internal dstsockpair: %s",
strerror(savederrno));
goto exit_fail;
}
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _close_socks(knet_handle_t knet_h)
{
_close_socketpair(knet_h, knet_h->dstsockfd);
_close_socketpair(knet_h, knet_h->hostsockfd);
}
static int _init_buffers(knet_handle_t knet_h)
{
int savederrno = 0;
int i;
size_t bufsize;
for (i = 0; i < PCKT_FRAG_MAX; i++) {
bufsize = ceil((float)KNET_MAX_PACKET_SIZE / (i + 1)) + KNET_HEADER_ALL_SIZE;
knet_h->send_to_links_buf[i] = malloc(bufsize);
if (!knet_h->send_to_links_buf[i]) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory datafd to link buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->send_to_links_buf[i], 0, bufsize);
knet_h->recv_from_sock_buf[i] = malloc(KNET_DATABUFSIZE);
if (!knet_h->recv_from_sock_buf[i]) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for app to datafd buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->recv_from_sock_buf[i], 0, KNET_DATABUFSIZE);
knet_h->recv_from_links_buf[i] = malloc(KNET_DATABUFSIZE);
if (!knet_h->recv_from_links_buf[i]) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for link to datafd buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->recv_from_links_buf[i], 0, KNET_DATABUFSIZE);
}
knet_h->pingbuf = malloc(KNET_HEADER_PING_SIZE);
if (!knet_h->pingbuf) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for hearbeat buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->pingbuf, 0, KNET_HEADER_PING_SIZE);
knet_h->pmtudbuf = malloc(KNET_PMTUD_SIZE_V6);
if (!knet_h->pmtudbuf) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for pmtud buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->pmtudbuf, 0, KNET_PMTUD_SIZE_V6);
for (i = 0; i < PCKT_FRAG_MAX; i++) {
bufsize = ceil((float)KNET_MAX_PACKET_SIZE / (i + 1)) + KNET_HEADER_ALL_SIZE + KNET_DATABUFSIZE_CRYPT_PAD;
knet_h->send_to_links_buf_crypt[i] = malloc(bufsize);
if (!knet_h->send_to_links_buf_crypt[i]) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for crypto datafd to link buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->send_to_links_buf_crypt[i], 0, bufsize);
}
knet_h->recv_from_links_buf_decrypt = malloc(KNET_DATABUFSIZE_CRYPT);
if (!knet_h->recv_from_links_buf_decrypt) {
savederrno = errno;
log_err(knet_h, KNET_SUB_CRYPTO, "Unable to allocate memory for crypto link to datafd buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->recv_from_links_buf_decrypt, 0, KNET_DATABUFSIZE_CRYPT);
knet_h->recv_from_links_buf_crypt = malloc(KNET_DATABUFSIZE_CRYPT);
if (!knet_h->recv_from_links_buf_crypt) {
savederrno = errno;
log_err(knet_h, KNET_SUB_CRYPTO, "Unable to allocate memory for crypto link to datafd buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->recv_from_links_buf_crypt, 0, KNET_DATABUFSIZE_CRYPT);
knet_h->pingbuf_crypt = malloc(KNET_DATABUFSIZE_CRYPT);
if (!knet_h->pingbuf_crypt) {
savederrno = errno;
log_err(knet_h, KNET_SUB_CRYPTO, "Unable to allocate memory for crypto hearbeat buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->pingbuf_crypt, 0, KNET_DATABUFSIZE_CRYPT);
knet_h->pmtudbuf_crypt = malloc(KNET_DATABUFSIZE_CRYPT);
if (!knet_h->pmtudbuf_crypt) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for crypto pmtud buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->pmtudbuf_crypt, 0, KNET_DATABUFSIZE_CRYPT);
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _destroy_buffers(knet_handle_t knet_h)
{
int i;
for (i = 0; i < PCKT_FRAG_MAX; i++) {
free(knet_h->send_to_links_buf[i]);
free(knet_h->recv_from_sock_buf[i]);
free(knet_h->send_to_links_buf_crypt[i]);
free(knet_h->recv_from_links_buf[i]);
}
free(knet_h->recv_from_links_buf_decrypt);
free(knet_h->recv_from_links_buf_crypt);
free(knet_h->pingbuf);
free(knet_h->pingbuf_crypt);
free(knet_h->pmtudbuf);
free(knet_h->pmtudbuf_crypt);
}
static int _init_epolls(knet_handle_t knet_h)
{
struct epoll_event ev;
int savederrno = 0;
/*
* even if the kernel does dynamic allocation with epoll_ctl
* we need to reserve one extra for host to host communication
*/
knet_h->send_to_links_epollfd = epoll_create(KNET_EPOLL_MAX_EVENTS + 1);
if (knet_h->send_to_links_epollfd < 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to create epoll datafd to link fd: %s",
strerror(savederrno));
goto exit_fail;
}
knet_h->recv_from_links_epollfd = epoll_create(KNET_EPOLL_MAX_EVENTS);
if (knet_h->recv_from_links_epollfd < 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to create epoll link to datafd fd: %s",
strerror(savederrno));
goto exit_fail;
}
knet_h->dst_link_handler_epollfd = epoll_create(KNET_EPOLL_MAX_EVENTS);
if (knet_h->dst_link_handler_epollfd < 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to create epoll dst cache fd: %s",
strerror(savederrno));
goto exit_fail;
}
if (_fdset_cloexec(knet_h->send_to_links_epollfd)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set CLOEXEC on datafd to link epoll fd: %s",
strerror(savederrno));
goto exit_fail;
}
if (_fdset_cloexec(knet_h->recv_from_links_epollfd)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set CLOEXEC on link to datafd epoll fd: %s",
strerror(savederrno));
goto exit_fail;
}
if (_fdset_cloexec(knet_h->dst_link_handler_epollfd)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set CLOEXEC on dst cache epoll fd: %s",
strerror(savederrno));
goto exit_fail;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = knet_h->hostsockfd[0];
if (epoll_ctl(knet_h->send_to_links_epollfd,
EPOLL_CTL_ADD, knet_h->hostsockfd[0], &ev)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to add hostsockfd[0] to epoll pool: %s",
strerror(savederrno));
goto exit_fail;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = knet_h->dstsockfd[0];
if (epoll_ctl(knet_h->dst_link_handler_epollfd,
EPOLL_CTL_ADD, knet_h->dstsockfd[0], &ev)) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to add dstsockfd[0] to epoll pool: %s",
strerror(savederrno));
goto exit_fail;
}
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _close_epolls(knet_handle_t knet_h)
{
struct epoll_event ev;
int i;
memset(&ev, 0, sizeof(struct epoll_event));
for (i = 0; i < KNET_DATAFD_MAX; i++) {
if (knet_h->sockfd[i].in_use) {
epoll_ctl(knet_h->send_to_links_epollfd, EPOLL_CTL_DEL, knet_h->sockfd[i].sockfd[knet_h->sockfd[i].is_created], &ev);
if (knet_h->sockfd[i].sockfd[knet_h->sockfd[i].is_created]) {
_close_socketpair(knet_h, knet_h->sockfd[i].sockfd);
}
}
}
epoll_ctl(knet_h->send_to_links_epollfd, EPOLL_CTL_DEL, knet_h->hostsockfd[0], &ev);
epoll_ctl(knet_h->dst_link_handler_epollfd, EPOLL_CTL_DEL, knet_h->dstsockfd[0], &ev);
close(knet_h->send_to_links_epollfd);
close(knet_h->recv_from_links_epollfd);
close(knet_h->dst_link_handler_epollfd);
}
static int _start_threads(knet_handle_t knet_h)
{
int savederrno = 0;
savederrno = pthread_create(&knet_h->pmtud_link_handler_thread, 0,
_handle_pmtud_link_thread, (void *) knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to start pmtud link thread: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_create(&knet_h->dst_link_handler_thread, 0,
_handle_dst_link_handler_thread, (void *) knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to start dst cache thread: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_create(&knet_h->send_to_links_thread, 0,
_handle_send_to_links_thread, (void *) knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to start datafd to link thread: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_create(&knet_h->recv_from_links_thread, 0,
_handle_recv_from_links_thread, (void *) knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to start link to datafd thread: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_create(&knet_h->heartbt_thread, 0,
_handle_heartbt_thread, (void *) knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to start heartbeat thread: %s",
strerror(savederrno));
goto exit_fail;
}
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _stop_transports(knet_handle_t knet_h)
{
int i;
knet_transport_ops_t *ops = NULL;
for (i=0; i<KNET_MAX_TRANSPORTS; i++) {
switch (i) {
case KNET_TRANSPORT_UDP:
ops = get_udp_transport();
break;
+#ifdef HAVE_NETINET_SCTP_H
case KNET_TRANSPORT_SCTP:
ops = get_sctp_transport();
break;
+#endif
}
if (ops) {
ops->handle_free(knet_h, knet_h->transports[i]);
}
}
}
static void _stop_threads(knet_handle_t knet_h)
{
void *retval;
/*
* allow threads to catch on shutdown request
* and release locks before we stop them.
* this isn't the most efficent way to handle it
* but it works good enough for now
*/
sleep(1);
pthread_mutex_lock(&knet_h->host_mutex);
pthread_cond_signal(&knet_h->host_cond);
pthread_mutex_unlock(&knet_h->host_mutex);
if (knet_h->heartbt_thread) {
pthread_cancel(knet_h->heartbt_thread);
pthread_join(knet_h->heartbt_thread, &retval);
}
if (knet_h->send_to_links_thread) {
pthread_cancel(knet_h->send_to_links_thread);
pthread_join(knet_h->send_to_links_thread, &retval);
}
if (knet_h->recv_from_links_thread) {
pthread_cancel(knet_h->recv_from_links_thread);
pthread_join(knet_h->recv_from_links_thread, &retval);
}
if (knet_h->dst_link_handler_thread) {
pthread_cancel(knet_h->dst_link_handler_thread);
pthread_join(knet_h->dst_link_handler_thread, &retval);
}
pthread_mutex_lock(&knet_h->pmtud_mutex);
pthread_cond_signal(&knet_h->pmtud_cond);
pthread_mutex_unlock(&knet_h->pmtud_mutex);
sleep(1);
if (knet_h->pmtud_link_handler_thread) {
pthread_cancel(knet_h->pmtud_link_handler_thread);
pthread_join(knet_h->pmtud_link_handler_thread, &retval);
}
}
knet_handle_t knet_handle_new(uint16_t host_id,
int log_fd,
uint8_t default_log_level)
{
knet_handle_t knet_h;
int savederrno = 0;
struct rlimit cur;
if (getrlimit(RLIMIT_NOFILE, &cur) < 0) {
return NULL;
}
if ((log_fd < 0) || (log_fd >= cur.rlim_max)) {
errno = EINVAL;
return NULL;
}
/*
* validate incoming request
*/
if ((log_fd) && (default_log_level > KNET_LOG_DEBUG)) {
errno = EINVAL;
return NULL;
}
/*
* allocate handle
*/
knet_h = malloc(sizeof(struct knet_handle));
if (!knet_h) {
errno = ENOMEM;
return NULL;
}
memset(knet_h, 0, sizeof(struct knet_handle));
savederrno = pthread_mutex_lock(&handle_config_mutex);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get handle mutex lock: %s",
strerror(savederrno));
errno = savederrno;
goto exit_fail;
}
/*
* copy config in place
*/
knet_h->host_id = host_id;
knet_h->logfd = log_fd;
if (knet_h->logfd > 0) {
memset(&knet_h->log_levels, default_log_level, KNET_MAX_SUBSYSTEMS);
}
/*
* set pmtud default timers
*/
knet_h->pmtud_interval = KNET_PMTUD_DEFAULT_INTERVAL;
/*
* init main locking structures
*/
if (_init_locks(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* init sockets
*/
if (_init_socks(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* allocate packet buffers
*/
if (_init_buffers(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* create epoll fds
*/
if (_init_epolls(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* start internal threads
*/
if (_start_threads(knet_h)) {
savederrno = errno;
goto exit_fail;
}
pthread_mutex_unlock(&handle_config_mutex);
return knet_h;
exit_fail:
pthread_mutex_unlock(&handle_config_mutex);
knet_handle_free(knet_h);
errno = savederrno;
return NULL;
}
int knet_handle_free(knet_handle_t knet_h)
{
int savederrno = 0;
savederrno = pthread_mutex_lock(&handle_config_mutex);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get handle mutex lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (!knet_h) {
pthread_mutex_unlock(&handle_config_mutex);
errno = EINVAL;
return -1;
}
if (!knet_h->lock_init_done) {
goto exit_nolock;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
pthread_mutex_unlock(&handle_config_mutex);
errno = savederrno;
return -1;
}
if (knet_h->host_head != NULL) {
savederrno = EBUSY;
log_err(knet_h, KNET_SUB_HANDLE,
"Unable to free handle: host(s) or listener(s) are still active: %s",
strerror(savederrno));
pthread_rwlock_unlock(&knet_h->global_rwlock);
pthread_mutex_unlock(&handle_config_mutex);
errno = savederrno;
return -1;
}
knet_h->fini_in_progress = 1;
pthread_rwlock_unlock(&knet_h->global_rwlock);
_stop_threads(knet_h);
_stop_transports(knet_h);
_close_epolls(knet_h);
_destroy_buffers(knet_h);
_close_socks(knet_h);
crypto_fini(knet_h);
_destroy_locks(knet_h);
exit_nolock:
free(knet_h);
knet_h = NULL;
pthread_mutex_unlock(&handle_config_mutex);
return 0;
}
int knet_handle_enable_sock_notify(knet_handle_t knet_h,
void *sock_notify_fn_private_data,
void (*sock_notify_fn) (
void *private_data,
int datafd,
int8_t channel,
uint8_t tx_rx,
int error,
int errorno))
{
int savederrno = 0, err = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!sock_notify_fn) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
knet_h->sock_notify_fn_private_data = sock_notify_fn_private_data;
knet_h->sock_notify_fn = sock_notify_fn;
log_debug(knet_h, KNET_SUB_HANDLE, "sock_notify_fn enabled");
pthread_rwlock_unlock(&knet_h->global_rwlock);
return err;
}
int knet_handle_add_datafd(knet_handle_t knet_h, int *datafd, int8_t *channel)
{
int err = 0, savederrno = 0;
int i;
struct epoll_event ev;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (datafd == NULL) {
errno = EINVAL;
return -1;
}
if (channel == NULL) {
errno = EINVAL;
return -1;
}
if (*channel >= KNET_DATAFD_MAX) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (!knet_h->sock_notify_fn) {
log_err(knet_h, KNET_SUB_HANDLE, "Adding datafd requires sock notify callback enabled!");
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
if (*datafd > 0) {
for (i = 0; i < KNET_DATAFD_MAX; i++) {
if ((knet_h->sockfd[i].in_use) && (knet_h->sockfd[i].sockfd[0] == *datafd)) {
log_err(knet_h, KNET_SUB_HANDLE, "requested datafd: %d already exist in index: %d", *datafd, i);
savederrno = EEXIST;
err = -1;
goto out_unlock;
}
}
}
/*
* auto allocate a channel
*/
if (*channel < 0) {
for (i = 0; i < KNET_DATAFD_MAX; i++) {
if (!knet_h->sockfd[i].in_use) {
*channel = i;
break;
}
}
if (*channel < 0) {
savederrno = EBUSY;
err = -1;
goto out_unlock;
}
} else {
if (knet_h->sockfd[*channel].in_use) {
savederrno = EBUSY;
err = -1;
goto out_unlock;
}
}
knet_h->sockfd[*channel].is_created = 0;
knet_h->sockfd[*channel].is_socket = 0;
knet_h->sockfd[*channel].has_error = 0;
if (*datafd > 0) {
int sockopt;
socklen_t sockoptlen = sizeof(sockopt);
if (_fdset_cloexec(*datafd)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set CLOEXEC on datafd: %s",
strerror(savederrno));
goto out_unlock;
}
if (_fdset_nonblock(*datafd)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to set NONBLOCK on datafd: %s",
strerror(savederrno));
goto out_unlock;
}
knet_h->sockfd[*channel].sockfd[0] = *datafd;
knet_h->sockfd[*channel].sockfd[1] = 0;
if (!getsockopt(knet_h->sockfd[*channel].sockfd[0], SOL_SOCKET, SO_TYPE, &sockopt, &sockoptlen)) {
knet_h->sockfd[*channel].is_socket = 1;
}
} else {
if (_init_socketpair(knet_h, knet_h->sockfd[*channel].sockfd)) {
savederrno = errno;
err = -1;
goto out_unlock;
}
knet_h->sockfd[*channel].is_created = 1;
knet_h->sockfd[*channel].is_socket = 1;
*datafd = knet_h->sockfd[*channel].sockfd[0];
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = knet_h->sockfd[*channel].sockfd[knet_h->sockfd[*channel].is_created];
if (epoll_ctl(knet_h->send_to_links_epollfd,
EPOLL_CTL_ADD, knet_h->sockfd[*channel].sockfd[knet_h->sockfd[*channel].is_created], &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to add datafd %d to linkfd epoll pool: %s",
knet_h->sockfd[*channel].sockfd[knet_h->sockfd[*channel].is_created], strerror(savederrno));
if (knet_h->sockfd[*channel].is_created) {
_close_socketpair(knet_h, knet_h->sockfd[*channel].sockfd);
}
goto out_unlock;
}
knet_h->sockfd[*channel].in_use = 1;
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_handle_remove_datafd(knet_handle_t knet_h, int datafd)
{
int err = 0, savederrno = 0;
int8_t channel = -1;
int i;
struct epoll_event ev;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (datafd <= 0) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
for (i = 0; i < KNET_DATAFD_MAX; i++) {
if ((knet_h->sockfd[i].in_use) &&
(knet_h->sockfd[i].sockfd[0] == datafd)) {
channel = i;
break;
}
}
if (channel < 0) {
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
if (!knet_h->sockfd[channel].has_error) {
memset(&ev, 0, sizeof(struct epoll_event));
if (epoll_ctl(knet_h->send_to_links_epollfd,
EPOLL_CTL_DEL, knet_h->sockfd[channel].sockfd[knet_h->sockfd[channel].is_created], &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to del datafd %d from linkfd epoll pool: %s",
knet_h->sockfd[channel].sockfd[0], strerror(savederrno));
goto out_unlock;
}
}
if (knet_h->sockfd[channel].is_created) {
_close_socketpair(knet_h, knet_h->sockfd[channel].sockfd);
}
memset(&knet_h->sockfd[channel], 0, sizeof(struct knet_sock));
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_handle_get_datafd(knet_handle_t knet_h, const int8_t channel, int *datafd)
{
int err = 0, savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if ((channel < 0) || (channel >= KNET_DATAFD_MAX)) {
errno = EINVAL;
return -1;
}
if (datafd == NULL) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (!knet_h->sockfd[channel].in_use) {
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
*datafd = knet_h->sockfd[channel].sockfd[0];
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_handle_get_channel(knet_handle_t knet_h, const int datafd, int8_t *channel)
{
int err = 0, savederrno = 0;
int i;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (datafd <= 0) {
errno = EINVAL;
return -1;
}
if (channel == NULL) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
*channel = -1;
for (i = 0; i < KNET_DATAFD_MAX; i++) {
if ((knet_h->sockfd[i].in_use) &&
(knet_h->sockfd[i].sockfd[0] == datafd)) {
*channel = i;
break;
}
}
if (*channel < 0) {
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_handle_enable_filter(knet_handle_t knet_h,
void *dst_host_filter_fn_private_data,
int (*dst_host_filter_fn) (
void *private_data,
const unsigned char *outdata,
ssize_t outdata_len,
uint8_t tx_rx,
uint16_t this_host_id,
uint16_t src_node_id,
int8_t *channel,
uint16_t *dst_host_ids,
size_t *dst_host_ids_entries))
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
knet_h->dst_host_filter_fn_private_data = dst_host_filter_fn_private_data;
knet_h->dst_host_filter_fn = dst_host_filter_fn;
if (knet_h->dst_host_filter_fn) {
log_debug(knet_h, KNET_SUB_HANDLE, "dst_host_filter_fn enabled");
} else {
log_debug(knet_h, KNET_SUB_HANDLE, "dst_host_filter_fn disabled");
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
return 0;
}
int knet_handle_setfwd(knet_handle_t knet_h, unsigned int enabled)
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if ((enabled < 0) || (enabled > 1)) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
knet_h->enabled = enabled;
if (enabled) {
log_debug(knet_h, KNET_SUB_HANDLE, "Data forwarding is enabled");
} else {
log_debug(knet_h, KNET_SUB_HANDLE, "Data forwarding is disabled");
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
return 0;
}
int knet_handle_pmtud_getfreq(knet_handle_t knet_h, unsigned int *interval)
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!interval) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
*interval = knet_h->pmtud_interval;
pthread_rwlock_unlock(&knet_h->global_rwlock);
return 0;
}
int knet_handle_pmtud_setfreq(knet_handle_t knet_h, unsigned int interval)
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if ((!interval) || (interval > 86400)) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
knet_h->pmtud_interval = interval;
log_debug(knet_h, KNET_SUB_HANDLE, "PMTUd interval set to: %u seconds", interval);
pthread_rwlock_unlock(&knet_h->global_rwlock);
return 0;
}
int knet_handle_enable_pmtud_notify(knet_handle_t knet_h,
void *pmtud_notify_fn_private_data,
void (*pmtud_notify_fn) (
void *private_data,
unsigned int data_mtu))
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
knet_h->pmtud_notify_fn_private_data = pmtud_notify_fn_private_data;
knet_h->pmtud_notify_fn = pmtud_notify_fn;
if (knet_h->pmtud_notify_fn) {
log_debug(knet_h, KNET_SUB_HANDLE, "pmtud_notify_fn enabled");
} else {
log_debug(knet_h, KNET_SUB_HANDLE, "pmtud_notify_fn disabled");
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
return 0;
}
int knet_handle_pmtud_get(knet_handle_t knet_h,
unsigned int *data_mtu)
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!data_mtu) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
*data_mtu = knet_h->data_mtu;
pthread_rwlock_unlock(&knet_h->global_rwlock);
return 0;
}
int knet_handle_crypto(knet_handle_t knet_h, struct knet_handle_crypto_cfg *knet_handle_crypto_cfg)
{
int savederrno = 0;
int err = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!knet_handle_crypto_cfg) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
crypto_fini(knet_h);
if ((!strncmp("none", knet_handle_crypto_cfg->crypto_model, 4)) ||
((!strncmp("none", knet_handle_crypto_cfg->crypto_cipher_type, 4)) &&
(!strncmp("none", knet_handle_crypto_cfg->crypto_hash_type, 4)))) {
log_debug(knet_h, KNET_SUB_CRYPTO, "crypto is not enabled");
err = 0;
goto exit_unlock;
}
if (knet_handle_crypto_cfg->private_key_len < KNET_MIN_KEY_LEN) {
log_debug(knet_h, KNET_SUB_CRYPTO, "private key len too short (min %u): %u",
KNET_MIN_KEY_LEN, knet_handle_crypto_cfg->private_key_len);
savederrno = EINVAL;
err = -1;
goto exit_unlock;
}
if (knet_handle_crypto_cfg->private_key_len > KNET_MAX_KEY_LEN) {
log_debug(knet_h, KNET_SUB_CRYPTO, "private key len too long (max %u): %u",
KNET_MAX_KEY_LEN, knet_handle_crypto_cfg->private_key_len);
savederrno = EINVAL;
err = -1;
goto exit_unlock;
}
err = crypto_init(knet_h, knet_handle_crypto_cfg);
if (err) {
err = -2;
}
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
ssize_t knet_recv(knet_handle_t knet_h, char *buff, const size_t buff_len, const int8_t channel)
{
int savederrno = 0;
ssize_t err = 0;
struct iovec iov_in;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (buff == NULL) {
errno = EINVAL;
return -1;
}
if (buff_len <= 0) {
errno = EINVAL;
return -1;
}
if (buff_len > KNET_MAX_PACKET_SIZE) {
errno = EINVAL;
return -1;
}
if (channel < 0) {
errno = EINVAL;
return -1;
}
if (channel >= KNET_DATAFD_MAX) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (!knet_h->sockfd[channel].in_use) {
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
memset(&iov_in, 0, sizeof(iov_in));
iov_in.iov_base = (void *)buff;
iov_in.iov_len = buff_len;
err = readv(knet_h->sockfd[channel].sockfd[0], &iov_in, 1);
savederrno = errno;
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
ssize_t knet_send(knet_handle_t knet_h, const char *buff, const size_t buff_len, const int8_t channel)
{
int savederrno = 0;
ssize_t err = 0;
struct iovec iov_out[1];
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (buff == NULL) {
errno = EINVAL;
return -1;
}
if (buff_len <= 0) {
errno = EINVAL;
return -1;
}
if (buff_len > KNET_MAX_PACKET_SIZE) {
errno = EINVAL;
return -1;
}
if (channel < 0) {
errno = EINVAL;
return -1;
}
if (channel >= KNET_DATAFD_MAX) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (!knet_h->sockfd[channel].in_use) {
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
memset(iov_out, 0, sizeof(iov_out));
iov_out[0].iov_base = (void *)buff;
iov_out[0].iov_len = buff_len;
err = writev(knet_h->sockfd[channel].sockfd[0], iov_out, 1);
savederrno = errno;
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
diff --git a/libknet/link.c b/libknet/link.c
index 9a722e8b..1383d31f 100644
--- a/libknet/link.c
+++ b/libknet/link.c
@@ -1,978 +1,983 @@
/*
* Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
*
* Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
* Federico Simoncelli <fsimon@kronosnet.org>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <errno.h>
#include <netdb.h>
#include <string.h>
#include <stdio.h>
#include <pthread.h>
#include "internals.h"
#include "logging.h"
#include "link.h"
#include "listener.h"
#include "transports.h"
#include "host.h"
int _link_updown(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
unsigned int enabled, unsigned int connected)
{
struct knet_link *link = &knet_h->host_index[host_id]->link[link_id];
if ((link->status.enabled == enabled) &&
(link->status.connected == connected))
return 0;
link->status.enabled = enabled;
link->status.connected = connected;
_host_dstcache_update_sync(knet_h, knet_h->host_index[host_id]);
if ((link->status.dynconnected) &&
(!link->status.connected))
link->status.dynconnected = 0;
return 0;
}
int knet_link_set_config(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
uint8_t transport,
struct sockaddr_storage *src_addr,
struct sockaddr_storage *dst_addr)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!src_addr) {
errno = EINVAL;
return -1;
}
if (transport >= KNET_MAX_TRANSPORTS) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (link->status.enabled != 0) {
err =-1;
savederrno = EBUSY;
log_err(knet_h, KNET_SUB_LINK, "Host %u link %u is currently in use: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
memmove(&link->src_addr, src_addr, sizeof(struct sockaddr_storage));
err = getnameinfo((const struct sockaddr *)src_addr, sizeof(struct sockaddr_storage),
link->status.src_ipaddr, KNET_MAX_HOST_LEN,
link->status.src_port, KNET_MAX_PORT_LEN,
NI_NUMERICHOST | NI_NUMERICSERV);
if (err) {
if (err == EAI_SYSTEM) {
savederrno = errno;
log_warn(knet_h, KNET_SUB_LINK,
"Unable to resolve host: %u link: %u source addr/port: %s",
host_id, link_id, strerror(savederrno));
} else {
savederrno = EINVAL;
log_warn(knet_h, KNET_SUB_LINK,
"Unable to resolve host: %u link: %u source addr/port: %s",
host_id, link_id, gai_strerror(err));
}
err = -1;
goto exit_unlock;
}
link->transport_type = transport;
switch (transport) {
case KNET_TRANSPORT_UDP:
knet_h->transport_ops[link->transport_type] = get_udp_transport();
break;
case KNET_TRANSPORT_SCTP:
+#ifdef HAVE_NETINET_SCTP_H
knet_h->transport_ops[link->transport_type] = get_sctp_transport();
break;
+#else
+ log_warn(knet_h, KNET_SUB_LINK,
+ "SCTP protocol not supported in this build");
+#endif
default:
- errno = EINVAL;
+ savederrno = EINVAL;
err = -1;
goto exit_unlock;
}
/* First time we've used this transport for this handle */
if (!knet_h->transports[transport]) {
knet_h->transport_ops[link->transport_type]->handle_allocate(knet_h, &knet_h->transports[transport]);
}
if (!knet_h->transports[transport]) {
savederrno = errno;
log_err(knet_h, KNET_SUB_LISTENER, "Failed to allocate transport handle for %s: %s",
knet_h->transport_ops[link->transport_type]->transport_name,
strerror(savederrno));
err = -1;
goto exit_unlock;
}
if (!dst_addr) {
link->dynamic = KNET_LINK_DYNIP;
err = 0;
goto exit_unlock;
}
link->dynamic = KNET_LINK_STATIC;
memmove(&link->dst_addr, dst_addr, sizeof(struct sockaddr_storage));
err = getnameinfo((const struct sockaddr *)dst_addr, sizeof(struct sockaddr_storage),
link->status.dst_ipaddr, KNET_MAX_HOST_LEN,
link->status.dst_port, KNET_MAX_PORT_LEN,
NI_NUMERICHOST | NI_NUMERICSERV);
if (err) {
if (err == EAI_SYSTEM) {
savederrno = errno;
log_warn(knet_h, KNET_SUB_LINK,
"Unable to resolve host: %u link: %u destination addr/port: %s",
host_id, link_id, strerror(savederrno));
} else {
savederrno = EINVAL;
log_warn(knet_h, KNET_SUB_LINK,
"Unable to resolve host: %u link: %u destination addr/port: %s",
host_id, link_id, gai_strerror(err));
}
err = -1;
}
exit_unlock:
if (!err) {
link->configured = 1;
link->pong_count = KNET_LINK_DEFAULT_PONG_COUNT;
link->has_valid_mtu = 0;
link->ping_interval = KNET_LINK_DEFAULT_PING_INTERVAL * 1000; /* microseconds */
link->pong_timeout = KNET_LINK_DEFAULT_PING_TIMEOUT * 1000; /* microseconds */
link->latency_fix = KNET_LINK_DEFAULT_PING_PRECISION;
link->latency_exp = KNET_LINK_DEFAULT_PING_PRECISION - \
((link->ping_interval * KNET_LINK_DEFAULT_PING_PRECISION) / 8000000);
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_config(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
uint8_t *transport,
struct sockaddr_storage *src_addr,
struct sockaddr_storage *dst_addr,
uint8_t *dynamic)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!src_addr) {
errno = EINVAL;
return -1;
}
if (!dynamic) {
errno = EINVAL;
return -1;
}
if (!transport) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
if ((link->dynamic == KNET_LINK_STATIC) && (!dst_addr)) {
savederrno = EINVAL;
err = -1;
goto exit_unlock;
}
memmove(src_addr, &link->src_addr, sizeof(struct sockaddr_storage));
*transport = link->transport_type;
if (link->dynamic == KNET_LINK_STATIC) {
*dynamic = 0;
memmove(dst_addr, &link->dst_addr, sizeof(struct sockaddr_storage));
} else {
*dynamic = 1;
}
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_set_enable(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
unsigned int enabled)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (enabled > 1) {
errno = EINVAL;
return -1;
}
/*
* this read lock might appear as an API violation, but be
* very careful because we cannot use a write lock (yet).
* the _send_host_info requires threads to be operational.
* a write lock here would deadlock.
* a read lock is sufficient as all functions invoked by
* this code are already thread safe.
*/
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
if (link->status.enabled == enabled) {
err = 0;
goto exit_unlock;
}
if (enabled) {
if (knet_h->transport_ops[link->transport_type]->link_allocate(
knet_h, knet_h->transports[link->transport_type],
link,
&link->transport, link_id,
&link->src_addr, &link->dst_addr,
&link->outsock) < 0) {
savederrno = errno;
err = -1;
goto exit_unlock;
}
if (_listener_add(knet_h, host_id, link_id) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_LINK, "Unable to setup listener for this link");
goto exit_unlock;
}
log_debug(knet_h, KNET_SUB_LINK, "host: %u link: %u is enabled",
host_id, link_id);
}
if (!enabled) {
struct knet_hostinfo knet_hostinfo;
knet_hostinfo.khi_type = KNET_HOSTINFO_TYPE_LINK_UP_DOWN;
knet_hostinfo.khi_bcast = KNET_HOSTINFO_UCAST;
knet_hostinfo.khi_dst_node_id = host_id;
knet_hostinfo.khip_link_status_link_id = link_id;
knet_hostinfo.khip_link_status_status = KNET_HOSTINFO_LINK_STATUS_DOWN;
_send_host_info(knet_h, &knet_hostinfo, KNET_HOSTINFO_LINK_STATUS_SIZE);
}
err = _link_updown(knet_h, host_id, link_id, enabled, link->status.connected);
savederrno = errno;
if ((!err) && (enabled)) {
err = 0;
goto exit_unlock;
}
if (err) {
err = -1;
goto exit_unlock;
}
err = _listener_remove(knet_h, host_id, link_id);
savederrno = errno;
if ((err) && (savederrno != EBUSY)) {
log_err(knet_h, KNET_SUB_LINK, "Unable to remove listener for this link");
if (_link_updown(knet_h, host_id, link_id, 1, link->status.connected)) {
/* force link status the hard way */
link->status.enabled = 1;
}
log_debug(knet_h, KNET_SUB_LINK, "host: %u link: %u is NOT disabled",
host_id, link_id);
err = -1;
goto exit_unlock;
} else {
err = 0;
savederrno = 0;
}
log_debug(knet_h, KNET_SUB_LINK, "host: %u link: %u is disabled",
host_id, link_id);
link->host_info_up_sent = 0;
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_enable(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
unsigned int *enabled)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!enabled) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
*enabled = link->status.enabled;
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_set_pong_count(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
uint8_t pong_count)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (pong_count < 1) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
link->pong_count = pong_count;
log_debug(knet_h, KNET_SUB_LINK,
"host: %u link: %u pong count update: %u",
host_id, link_id, link->pong_count);
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_pong_count(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
uint8_t *pong_count)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!pong_count) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
*pong_count = link->pong_count;
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_set_ping_timers(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
time_t interval, time_t timeout, unsigned int precision)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!interval) {
errno = EINVAL;
return -1;
}
if (!timeout) {
errno = EINVAL;
return -1;
}
if (!precision) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
link->ping_interval = interval * 1000; /* microseconds */
link->pong_timeout = timeout * 1000; /* microseconds */
link->latency_fix = precision;
link->latency_exp = precision - \
((link->ping_interval * precision) / 8000000);
log_debug(knet_h, KNET_SUB_LINK,
"host: %u link: %u timeout update - interval: %llu timeout: %llu precision: %d",
host_id, link_id, link->ping_interval, link->pong_timeout, precision);
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_ping_timers(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
time_t *interval, time_t *timeout, unsigned int *precision)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!interval) {
errno = EINVAL;
return -1;
}
if (!timeout) {
errno = EINVAL;
return -1;
}
if (!precision) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
*interval = link->ping_interval / 1000; /* microseconds */
*timeout = link->pong_timeout / 1000;
*precision = link->latency_fix;
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_set_priority(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
uint8_t priority)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
uint8_t old_priority;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_wrlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
old_priority = link->priority;
if (link->priority == priority) {
err = 0;
goto exit_unlock;
}
link->priority = priority;
if (_host_dstcache_update_async(knet_h, host)) {
savederrno = errno;
log_debug(knet_h, KNET_SUB_LINK,
"Unable to update link priority (host: %u link: %u priority: %u): %s",
host_id, link_id, link->priority, strerror(savederrno));
link->priority = old_priority;
err = -1;
goto exit_unlock;
}
log_debug(knet_h, KNET_SUB_LINK,
"host: %u link: %u priority set to: %u",
host_id, link_id, link->priority);
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_priority(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
uint8_t *priority)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!priority) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
*priority = link->priority;
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_link_list(knet_handle_t knet_h, uint16_t host_id,
uint8_t *link_ids, size_t *link_ids_entries)
{
int savederrno = 0, err = 0, i, count = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!link_ids) {
errno = EINVAL;
return -1;
}
if (!link_ids_entries) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
for (i = 0; i < KNET_MAX_LINK; i++) {
link = &host->link[i];
if (!link->configured) {
continue;
}
link_ids[count] = i;
count++;
}
*link_ids_entries = count;
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
int knet_link_get_status(knet_handle_t knet_h, uint16_t host_id, uint8_t link_id,
struct knet_link_status *status)
{
int savederrno = 0, err = 0;
struct knet_host *host;
struct knet_link *link;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (link_id >= KNET_MAX_LINK) {
errno = EINVAL;
return -1;
}
if (!status) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_LINK, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
host = knet_h->host_index[host_id];
if (!host) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "Unable to find host %u: %s",
host_id, strerror(savederrno));
goto exit_unlock;
}
link = &host->link[link_id];
if (!link->configured) {
err = -1;
savederrno = EINVAL;
log_err(knet_h, KNET_SUB_LINK, "host %u link %u is not configured: %s",
host_id, link_id, strerror(savederrno));
goto exit_unlock;
}
memmove(status, &link->status, sizeof(struct knet_link_status));
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
diff --git a/libknet/threads_send_recv.c b/libknet/threads_send_recv.c
index 744335f4..b0166eb5 100644
--- a/libknet/threads_send_recv.c
+++ b/libknet/threads_send_recv.c
@@ -1,1198 +1,1203 @@
/*
* Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
*
* Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
* Federico Simoncelli <fsimon@kronosnet.org>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <math.h>
#include <sys/epoll.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
+#ifdef HAVE_NETINET_SCTP_H
+#include <netinet/sctp.h>
+#endif
#include "crypto.h"
#include "compat.h"
#include "host.h"
#include "link.h"
#include "logging.h"
#include "transports.h"
#include "threads_common.h"
#include "threads_send_recv.h"
/*
* SEND
*/
static int _dispatch_to_links(knet_handle_t knet_h, struct knet_host *dst_host, struct iovec *iov_out)
{
int link_idx, msg_idx, sent_msgs, msgs_to_send, prev_sent, progress;
struct mmsghdr msg[PCKT_FRAG_MAX];
int err = 0, savederrno = 0;
memset(&msg, 0, sizeof(struct mmsghdr));
for (link_idx = 0; link_idx < dst_host->active_link_entries; link_idx++) {
msgs_to_send = knet_h->send_to_links_buf[0]->khp_data_frag_num;
sent_msgs = 0;
prev_sent = 0;
progress = 1;
retry:
msg_idx = 0;
while (msg_idx < msgs_to_send) {
memset(&msg[msg_idx].msg_hdr, 0, sizeof(struct msghdr));
msg[msg_idx].msg_hdr.msg_name = &dst_host->link[dst_host->active_links[link_idx]].dst_addr;
msg[msg_idx].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage);
msg[msg_idx].msg_hdr.msg_iov = &iov_out[msg_idx + prev_sent];
msg[msg_idx].msg_hdr.msg_iovlen = 1;
msg_idx++;
}
sent_msgs = sendmmsg(dst_host->link[dst_host->active_links[link_idx]].outsock,
msg, msg_idx, MSG_DONTWAIT | MSG_NOSIGNAL);
savederrno = errno;
if ((sent_msgs >= 0) && (sent_msgs < msg_idx)) {
if ((sent_msgs) || (progress)) {
msgs_to_send = msg_idx - sent_msgs;
prev_sent = prev_sent + sent_msgs;
if (sent_msgs) {
progress = 1;
} else {
progress = 0;
}
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to send all (%d/%d) data packets to host %s (%u) link %s:%s (%u)",
sent_msgs, msg_idx,
dst_host->name, dst_host->host_id,
dst_host->link[dst_host->active_links[link_idx]].status.dst_ipaddr,
dst_host->link[dst_host->active_links[link_idx]].status.dst_port,
dst_host->link[dst_host->active_links[link_idx]].link_id);
goto retry;
}
if (!progress) {
savederrno = EAGAIN;
err = -1;
goto out_unlock;
}
}
if (sent_msgs < 0) {
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to send data packet to host %s (%u) link %s:%s (%u): %s",
dst_host->name, dst_host->host_id,
dst_host->link[dst_host->active_links[link_idx]].status.dst_ipaddr,
dst_host->link[dst_host->active_links[link_idx]].status.dst_port,
dst_host->link[dst_host->active_links[link_idx]].link_id,
strerror(savederrno));
err = -1;
goto out_unlock;
}
if ((dst_host->link_handler_policy == KNET_LINK_POLICY_RR) &&
(dst_host->active_link_entries > 1)) {
uint8_t cur_link_id = dst_host->active_links[0];
memmove(&dst_host->active_links[0], &dst_host->active_links[1], KNET_MAX_LINK - 1);
dst_host->active_links[dst_host->active_link_entries - 1] = cur_link_id;
break;
}
}
out_unlock:
errno = savederrno;
return err;
}
static int _parse_recv_from_sock(knet_handle_t knet_h, int buf_idx, ssize_t inlen, int8_t channel, int is_sync)
{
ssize_t outlen, frag_len;
struct knet_host *dst_host;
uint16_t dst_host_ids_temp[KNET_MAX_HOST];
size_t dst_host_ids_entries_temp = 0;
uint16_t dst_host_ids[KNET_MAX_HOST];
size_t dst_host_ids_entries = 0;
int bcast = 1;
struct knet_hostinfo *knet_hostinfo;
struct iovec iov_out[PCKT_FRAG_MAX];
uint8_t frag_idx;
unsigned int temp_data_mtu;
int host_idx;
int send_mcast = 0;
struct knet_header *inbuf;
int savederrno = 0;
int err = 0;
inbuf = knet_h->recv_from_sock_buf[buf_idx];
if ((knet_h->enabled != 1) &&
(inbuf->kh_type != KNET_HEADER_TYPE_HOST_INFO)) { /* data forward is disabled */
log_debug(knet_h, KNET_SUB_SEND_T, "Received data packet but forwarding is disabled");
savederrno = ECANCELED;
err = -1;
goto out_unlock;
}
/*
* move this into a separate function to expand on
* extra switching rules
*/
switch(inbuf->kh_type) {
case KNET_HEADER_TYPE_DATA:
if (knet_h->dst_host_filter_fn) {
bcast = knet_h->dst_host_filter_fn(
knet_h->dst_host_filter_fn_private_data,
(const unsigned char *)inbuf->khp_data_userdata,
inlen,
KNET_NOTIFY_TX,
knet_h->host_id,
knet_h->host_id,
&channel,
dst_host_ids_temp,
&dst_host_ids_entries_temp);
if (bcast < 0) {
log_debug(knet_h, KNET_SUB_SEND_T, "Error from dst_host_filter_fn: %d", bcast);
savederrno = EFAULT;
err = -1;
goto out_unlock;
}
if ((!bcast) && (!dst_host_ids_entries_temp)) {
log_debug(knet_h, KNET_SUB_SEND_T, "Message is unicast but no dst_host_ids_entries");
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
}
break;
case KNET_HEADER_TYPE_HOST_INFO:
knet_hostinfo = (struct knet_hostinfo *)inbuf->khp_data_userdata;
if (knet_hostinfo->khi_bcast == KNET_HOSTINFO_UCAST) {
bcast = 0;
dst_host_ids_temp[0] = knet_hostinfo->khi_dst_node_id;
dst_host_ids_entries_temp = 1;
knet_hostinfo->khi_dst_node_id = htons(knet_hostinfo->khi_dst_node_id);
}
break;
default:
log_warn(knet_h, KNET_SUB_SEND_T, "Receiving unknown messages from socket");
savederrno = ENOMSG;
err = -1;
goto out_unlock;
break;
}
if (is_sync) {
if ((bcast) ||
((!bcast) && (dst_host_ids_entries_temp > 1))) {
log_debug(knet_h, KNET_SUB_SEND_T, "knet_send_sync is only supported with unicast packets for one destination");
savederrno = E2BIG;
err = -1;
goto out_unlock;
}
}
/*
* check destinations hosts before spending time
* in fragmenting/encrypting packets to save
* time processing data for unrechable hosts.
* for unicast, also remap the destination data
* to skip unreachable hosts.
*/
if (!bcast) {
dst_host_ids_entries = 0;
for (host_idx = 0; host_idx < dst_host_ids_entries_temp; host_idx++) {
dst_host = knet_h->host_index[dst_host_ids_temp[host_idx]];
if (!dst_host) {
continue;
}
if (dst_host->status.reachable) {
dst_host_ids[dst_host_ids_entries] = dst_host_ids_temp[host_idx];
dst_host_ids_entries++;
}
}
if (!dst_host_ids_entries) {
savederrno = EHOSTDOWN;
err = -1;
goto out_unlock;
}
} else {
send_mcast = 0;
for (dst_host = knet_h->host_head; dst_host != NULL; dst_host = dst_host->next) {
if (dst_host->status.reachable) {
send_mcast = 1;
break;
}
}
if (!send_mcast) {
savederrno = EHOSTDOWN;
err = -1;
goto out_unlock;
}
}
if (!knet_h->data_mtu) {
/*
* using MIN_MTU_V4 for data mtu is not completely accurate but safe enough
*/
log_debug(knet_h, KNET_SUB_SEND_T,
"Received data packet but data MTU is still unknown."
" Packet might not be delivered."
" Assuming mininum IPv4 mtu (%d)",
KNET_PMTUD_MIN_MTU_V4);
temp_data_mtu = KNET_PMTUD_MIN_MTU_V4;
} else {
/*
* take a copy of the mtu to avoid value changing under
* our feet while we are sending a fragmented pckt
*/
temp_data_mtu = knet_h->data_mtu;
}
/*
* prepare the outgoing buffers
*/
frag_len = inlen;
frag_idx = 0;
inbuf->khp_data_bcast = bcast;
inbuf->khp_data_frag_num = ceil((float)inlen / temp_data_mtu);
inbuf->khp_data_channel = channel;
while (frag_idx < inbuf->khp_data_frag_num) {
/*
* set the iov_base
*/
iov_out[frag_idx].iov_base = (void *)knet_h->send_to_links_buf[frag_idx];
/*
* set the len
*/
if (frag_len > temp_data_mtu) {
iov_out[frag_idx].iov_len = temp_data_mtu + KNET_HEADER_DATA_SIZE;
} else {
iov_out[frag_idx].iov_len = frag_len + KNET_HEADER_DATA_SIZE;
}
/*
* copy the frag info on all buffers
*/
knet_h->send_to_links_buf[frag_idx]->kh_type = inbuf->kh_type;
knet_h->send_to_links_buf[frag_idx]->khp_data_frag_num = inbuf->khp_data_frag_num;
knet_h->send_to_links_buf[frag_idx]->khp_data_bcast = inbuf->khp_data_bcast;
knet_h->send_to_links_buf[frag_idx]->khp_data_channel = inbuf->khp_data_channel;
memmove(knet_h->send_to_links_buf[frag_idx]->khp_data_userdata,
inbuf->khp_data_userdata + (temp_data_mtu * frag_idx),
iov_out[frag_idx].iov_len - KNET_HEADER_DATA_SIZE);
frag_len = frag_len - temp_data_mtu;
frag_idx++;
}
if (!bcast) {
for (host_idx = 0; host_idx < dst_host_ids_entries; host_idx++) {
dst_host = knet_h->host_index[dst_host_ids[host_idx]];
knet_h->send_to_links_buf[0]->khp_data_seq_num = htons(++dst_host->ucast_seq_num_tx);
frag_idx = 0;
while (frag_idx < knet_h->send_to_links_buf[0]->khp_data_frag_num) {
knet_h->send_to_links_buf[frag_idx]->khp_data_seq_num = knet_h->send_to_links_buf[0]->khp_data_seq_num;
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(
knet_h,
(const unsigned char *)knet_h->send_to_links_buf[frag_idx],
iov_out[frag_idx].iov_len,
knet_h->send_to_links_buf_crypt[frag_idx],
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to encrypt unicast packet");
savederrno = ECHILD;
err = -1;
goto out_unlock;
}
iov_out[frag_idx].iov_base = knet_h->send_to_links_buf_crypt[frag_idx];
iov_out[frag_idx].iov_len = outlen;
}
frag_idx++;
}
err = _dispatch_to_links(knet_h, dst_host, iov_out);
savederrno = errno;
if (err) {
goto out_unlock;
}
}
} else {
knet_h->send_to_links_buf[0]->khp_data_seq_num = htons(++knet_h->bcast_seq_num_tx);
frag_idx = 0;
while (frag_idx < knet_h->send_to_links_buf[0]->khp_data_frag_num) {
knet_h->send_to_links_buf[frag_idx]->khp_data_seq_num = knet_h->send_to_links_buf[0]->khp_data_seq_num;
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(
knet_h,
(const unsigned char *)knet_h->send_to_links_buf[frag_idx],
iov_out[frag_idx].iov_len,
knet_h->send_to_links_buf_crypt[frag_idx],
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to encrypt unicast packet");
savederrno = ECHILD;
err = -1;
goto out_unlock;
}
iov_out[frag_idx].iov_base = knet_h->send_to_links_buf_crypt[frag_idx];
iov_out[frag_idx].iov_len = outlen;
}
frag_idx++;
}
for (dst_host = knet_h->host_head; dst_host != NULL; dst_host = dst_host->next) {
if (dst_host->status.reachable) {
err = _dispatch_to_links(knet_h, dst_host, iov_out);
savederrno = errno;
if (err) {
goto out_unlock;
}
}
}
}
out_unlock:
if ((inlen > 0) && (inbuf->kh_type == KNET_HEADER_TYPE_HOST_INFO)) {
if (pthread_mutex_lock(&knet_h->host_mutex) != 0)
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to get mutex lock");
pthread_cond_signal(&knet_h->host_cond);
pthread_mutex_unlock(&knet_h->host_mutex);
}
errno = savederrno;
return err;
}
int knet_send_sync(knet_handle_t knet_h, const char *buff, const size_t buff_len, const int8_t channel)
{
int savederrno = 0, err = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (buff == NULL) {
errno = EINVAL;
return -1;
}
if (buff_len <= 0) {
errno = EINVAL;
return -1;
}
if (buff_len > KNET_MAX_PACKET_SIZE) {
errno = EINVAL;
return -1;
}
if (channel < 0) {
errno = EINVAL;
return -1;
}
if (channel >= KNET_DATAFD_MAX) {
errno = EINVAL;
return -1;
}
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_SEND_T, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (!knet_h->sockfd[channel].in_use) {
savederrno = EINVAL;
err = -1;
goto out;
}
savederrno = pthread_mutex_lock(&knet_h->tx_mutex);
if (savederrno) {
log_err(knet_h, KNET_SUB_SEND_T, "Unable to get TX mutex lock: %s",
strerror(savederrno));
err = -1;
goto out;
}
knet_h->recv_from_sock_buf[0]->kh_type = KNET_HEADER_TYPE_DATA;
memmove(knet_h->recv_from_sock_buf[0]->khp_data_userdata, buff, buff_len);
err = _parse_recv_from_sock(knet_h, 0, buff_len, channel, 1);
savederrno = errno;
pthread_mutex_unlock(&knet_h->tx_mutex);
out:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = savederrno;
return err;
}
static void _handle_send_to_links(knet_handle_t knet_h, int sockfd, int8_t channel, struct mmsghdr *msg, int type)
{
ssize_t inlen = 0;
struct iovec iov_in;
int msg_recv, i;
int savederrno = 0, docallback = 0;
if ((channel >= 0) &&
(channel < KNET_DATAFD_MAX) &&
(!knet_h->sockfd[channel].is_socket)) {
memset(&iov_in, 0, sizeof(iov_in));
iov_in.iov_base = (void *)knet_h->recv_from_sock_buf[0]->khp_data_userdata;
iov_in.iov_len = KNET_MAX_PACKET_SIZE;
inlen = readv(sockfd, &iov_in, 1);
if (inlen <= 0) {
savederrno = errno;
docallback = 1;
goto out;
}
msg_recv = 1;
knet_h->recv_from_sock_buf[0]->kh_type = type;
_parse_recv_from_sock(knet_h, 0, inlen, channel, 0);
} else {
msg_recv = recvmmsg(sockfd, msg, PCKT_FRAG_MAX, MSG_DONTWAIT | MSG_NOSIGNAL, NULL);
if (msg_recv < 0) {
inlen = msg_recv;
savederrno = errno;
docallback = 1;
goto out;
}
for (i = 0; i < msg_recv; i++) {
inlen = msg[i].msg_len;
if (inlen == 0) {
savederrno = 0;
docallback = 1;
goto out;
break;
}
knet_h->recv_from_sock_buf[i]->kh_type = type;
_parse_recv_from_sock(knet_h, i, inlen, channel, 0);
}
}
out:
if (inlen < 0) {
struct epoll_event ev;
memset(&ev, 0, sizeof(struct epoll_event));
if (epoll_ctl(knet_h->send_to_links_epollfd,
EPOLL_CTL_DEL, knet_h->sockfd[channel].sockfd[knet_h->sockfd[channel].is_created], &ev)) {
log_err(knet_h, KNET_SUB_SEND_T, "Unable to del datafd %d from linkfd epoll pool: %s",
knet_h->sockfd[channel].sockfd[0], strerror(savederrno));
} else {
knet_h->sockfd[channel].has_error = 1;
}
}
if (docallback) {
knet_h->sock_notify_fn(knet_h->sock_notify_fn_private_data,
knet_h->sockfd[channel].sockfd[0],
channel,
KNET_NOTIFY_TX,
inlen,
savederrno);
}
}
void *_handle_send_to_links_thread(void *data)
{
knet_handle_t knet_h = (knet_handle_t) data;
struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
struct sockaddr_storage address[PCKT_FRAG_MAX];
struct mmsghdr msg[PCKT_FRAG_MAX];
struct iovec iov_in[PCKT_FRAG_MAX];
int i, nev, type;
int8_t channel;
memset(&msg, 0, sizeof(struct mmsghdr));
/* preparing data buffer */
for (i = 0; i < PCKT_FRAG_MAX; i++) {
iov_in[i].iov_base = (void *)knet_h->recv_from_sock_buf[i]->khp_data_userdata;
iov_in[i].iov_len = KNET_MAX_PACKET_SIZE;
memset(&msg[i].msg_hdr, 0, sizeof(struct msghdr));
msg[i].msg_hdr.msg_name = &address[i];
msg[i].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage);
msg[i].msg_hdr.msg_iov = &iov_in[i];
msg[i].msg_hdr.msg_iovlen = 1;
knet_h->recv_from_sock_buf[i]->kh_version = KNET_HEADER_VERSION;
knet_h->recv_from_sock_buf[i]->khp_data_frag_seq = 0;
knet_h->recv_from_sock_buf[i]->kh_node = htons(knet_h->host_id);
knet_h->send_to_links_buf[i]->kh_version = KNET_HEADER_VERSION;
knet_h->send_to_links_buf[i]->khp_data_frag_seq = i + 1;
knet_h->send_to_links_buf[i]->kh_node = htons(knet_h->host_id);
}
while (!shutdown_in_progress(knet_h)) {
nev = epoll_wait(knet_h->send_to_links_epollfd, events, KNET_EPOLL_MAX_EVENTS + 1, -1);
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to get read lock");
continue;
}
for (i = 0; i < nev; i++) {
if (events[i].data.fd == knet_h->hostsockfd[0]) {
type = KNET_HEADER_TYPE_HOST_INFO;
channel = -1;
} else {
type = KNET_HEADER_TYPE_DATA;
for (channel = 0; channel < KNET_DATAFD_MAX; channel++) {
if ((knet_h->sockfd[channel].in_use) &&
(knet_h->sockfd[channel].sockfd[knet_h->sockfd[channel].is_created] == events[i].data.fd)) {
break;
}
}
}
if (pthread_mutex_lock(&knet_h->tx_mutex) != 0) {
log_debug(knet_h, KNET_SUB_SEND_T, "Unable to get mutex lock");
pthread_rwlock_unlock(&knet_h->listener_rwlock);
continue;
}
_handle_send_to_links(knet_h, events[i].data.fd, channel, msg, type);
pthread_mutex_unlock(&knet_h->tx_mutex);
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
}
return NULL;
}
/*
* RECV
*/
/*
* return 1 if a > b
* return -1 if b > a
* return 0 if they are equal
*/
static inline int timecmp(struct timespec a, struct timespec b)
{
if (a.tv_sec != b.tv_sec) {
if (a.tv_sec > b.tv_sec) {
return 1;
} else {
return -1;
}
} else {
if (a.tv_nsec > b.tv_nsec) {
return 1;
} else if (a.tv_nsec < b.tv_nsec) {
return -1;
} else {
return 0;
}
}
}
/*
* this functions needs to return an index (0 to 7)
* to a knet_host_defrag_buf. (-1 on errors)
*/
static int find_pckt_defrag_buf(knet_handle_t knet_h, struct knet_header *inbuf)
{
struct knet_host *src_host = knet_h->host_index[inbuf->kh_node];
int i, oldest;
/*
* check if there is a buffer already in use handling the same seq_num
*/
for (i = 0; i < KNET_MAX_LINK; i++) {
if (src_host->defrag_buf[i].in_use) {
if (src_host->defrag_buf[i].pckt_seq == inbuf->khp_data_seq_num) {
return i;
}
}
}
/*
* If there is no buffer that's handling the current seq_num
* either it's new or it's been reclaimed already.
* check if it's been reclaimed/seen before using the defrag circular
* buffer. If the pckt has been seen before, the buffer expired (ETIME)
* and there is no point to try to defrag it again.
*/
if (!_seq_num_lookup(src_host, inbuf->khp_data_bcast, inbuf->khp_data_seq_num, 1)) {
errno = ETIME;
return -1;
}
/*
* register the pckt as seen
*/
_seq_num_set(src_host, inbuf->khp_data_bcast, inbuf->khp_data_seq_num, 1);
/*
* see if there is a free buffer
*/
for (i = 0; i < KNET_MAX_LINK; i++) {
if (!src_host->defrag_buf[i].in_use) {
return i;
}
}
/*
* at this point, there are no free buffers, the pckt is new
* and we need to reclaim a buffer, and we will take the one
* with the oldest timestamp. It's as good as any.
*/
oldest = 0;
for (i = 0; i < KNET_MAX_LINK; i++) {
if (timecmp(src_host->defrag_buf[i].last_update, src_host->defrag_buf[oldest].last_update) < 0) {
oldest = i;
}
}
src_host->defrag_buf[oldest].in_use = 0;
return oldest;
}
static int pckt_defrag(knet_handle_t knet_h, struct knet_header *inbuf, ssize_t *len)
{
struct knet_host_defrag_buf *defrag_buf;
int defrag_buf_idx;
defrag_buf_idx = find_pckt_defrag_buf(knet_h, inbuf);
if (defrag_buf_idx < 0) {
if (errno == ETIME) {
log_debug(knet_h, KNET_SUB_LINK_T, "Defrag buffer expired");
}
return 1;
}
defrag_buf = &knet_h->host_index[inbuf->kh_node]->defrag_buf[defrag_buf_idx];
/*
* if the buf is not is use, then make sure it's clean
*/
if (!defrag_buf->in_use) {
memset(defrag_buf, 0, sizeof(struct knet_host_defrag_buf));
defrag_buf->in_use = 1;
defrag_buf->pckt_seq = inbuf->khp_data_seq_num;
}
/*
* update timestamp on the buffer
*/
clock_gettime(CLOCK_MONOTONIC, &defrag_buf->last_update);
/*
* check if we already received this fragment
*/
if (defrag_buf->frag_map[inbuf->khp_data_frag_seq]) {
/*
* if we have received this fragment and we didn't clear the buffer
* it means that we don't have all fragments yet
*/
return 1;
}
/*
* we need to handle the last packet with gloves due to its different size
*/
if (inbuf->khp_data_frag_seq == inbuf->khp_data_frag_num) {
defrag_buf->last_frag_size = *len;
/*
* in the event when the last packet arrives first,
* we still don't know the offset vs the other fragments (based on MTU),
* so we store the fragment at the end of the buffer where it's safe
* and take a copy of the len so that we can restore its offset later.
* remember we can't use the local MTU for this calculation because pMTU
* can be asymettric between the same hosts.
*/
if (!defrag_buf->frag_size) {
defrag_buf->last_first = 1;
memmove(defrag_buf->buf + (KNET_MAX_PACKET_SIZE - *len),
inbuf->khp_data_userdata,
*len);
}
} else {
defrag_buf->frag_size = *len;
}
memmove(defrag_buf->buf + ((inbuf->khp_data_frag_seq - 1) * defrag_buf->frag_size),
inbuf->khp_data_userdata, *len);
defrag_buf->frag_recv++;
defrag_buf->frag_map[inbuf->khp_data_frag_seq] = 1;
/*
* check if we received all the fragments
*/
if (defrag_buf->frag_recv == inbuf->khp_data_frag_num) {
/*
* special case the last pckt
*/
if (defrag_buf->last_first) {
memmove(defrag_buf->buf + ((inbuf->khp_data_frag_num - 1) * defrag_buf->frag_size),
defrag_buf->buf + (KNET_MAX_PACKET_SIZE - defrag_buf->last_frag_size),
defrag_buf->last_frag_size);
}
/*
* recalculate packet lenght
*/
*len = ((inbuf->khp_data_frag_num - 1) * defrag_buf->frag_size) + defrag_buf->last_frag_size;
/*
* copy the pckt back in the user data
*/
memmove(inbuf->khp_data_userdata, defrag_buf->buf, *len);
/*
* free this buffer
*/
defrag_buf->in_use = 0;
return 0;
}
return 1;
}
static void _parse_recv_from_links(knet_handle_t knet_h, struct sockaddr_storage *address, int ind, ssize_t len)
{
ssize_t outlen;
struct knet_host *src_host;
struct knet_link *src_link;
unsigned long long latency_last;
uint16_t dst_host_ids[KNET_MAX_HOST];
size_t dst_host_ids_entries = 0;
int bcast = 1;
struct timespec recvtime;
struct knet_header *inbuf = knet_h->recv_from_links_buf[ind];
unsigned char *outbuf = (unsigned char *)knet_h->recv_from_links_buf[ind];
struct knet_hostinfo *knet_hostinfo;
struct iovec iov_out[1];
int8_t channel;
if (knet_h->crypto_instance) {
if (crypto_authenticate_and_decrypt(knet_h,
(unsigned char *)inbuf,
len,
knet_h->recv_from_links_buf_decrypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to decrypt/auth packet");
return;
}
len = outlen;
inbuf = (struct knet_header *)knet_h->recv_from_links_buf_decrypt;
}
if (len < (KNET_HEADER_SIZE + 1)) {
log_debug(knet_h, KNET_SUB_LINK_T, "Packet is too short: %ld", len);
return;
}
if (inbuf->kh_version != KNET_HEADER_VERSION) {
log_debug(knet_h, KNET_SUB_LINK_T, "Packet version does not match");
return;
}
inbuf->kh_node = ntohs(inbuf->kh_node);
src_host = knet_h->host_index[inbuf->kh_node];
if (src_host == NULL) { /* host not found */
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to find source host for this packet");
return;
}
src_link = NULL;
if ((inbuf->kh_type & KNET_HEADER_TYPE_PMSK) != 0) {
src_link = src_host->link +
(inbuf->khp_ping_link % KNET_MAX_LINK);
if (src_link->dynamic == KNET_LINK_DYNIP) {
if (memcmp(&src_link->dst_addr, address, sizeof(struct sockaddr_storage)) != 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "host: %u link: %u appears to have changed ip address",
src_host->host_id, src_link->link_id);
memmove(&src_link->dst_addr, address, sizeof(struct sockaddr_storage));
if (getnameinfo((const struct sockaddr *)&src_link->dst_addr, sizeof(struct sockaddr_storage),
src_link->status.dst_ipaddr, KNET_MAX_HOST_LEN,
src_link->status.dst_port, KNET_MAX_PORT_LEN,
NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to resolve ???");
snprintf(src_link->status.dst_ipaddr, KNET_MAX_HOST_LEN - 1, "Unknown!!!");
snprintf(src_link->status.dst_port, KNET_MAX_PORT_LEN - 1, "??");
}
}
src_link->status.dynconnected = 1;
}
}
switch (inbuf->kh_type) {
case KNET_HEADER_TYPE_HOST_INFO:
case KNET_HEADER_TYPE_DATA:
inbuf->khp_data_seq_num = ntohs(inbuf->khp_data_seq_num);
channel = inbuf->khp_data_channel;
if (!_seq_num_lookup(src_host, inbuf->khp_data_bcast, inbuf->khp_data_seq_num, 0)) {
if (src_host->link_handler_policy != KNET_LINK_POLICY_ACTIVE) {
log_debug(knet_h, KNET_SUB_LINK_T, "Packet has already been delivered");
}
return;
}
if (inbuf->khp_data_frag_num > 1) {
/*
* len as received from the socket also includes extra stuff
* that the defrag code doesn't care about. So strip it
* here and readd only for repadding once we are done
* defragging
*/
len = len - KNET_HEADER_DATA_SIZE;
if (pckt_defrag(knet_h, inbuf, &len)) {
return;
}
len = len + KNET_HEADER_DATA_SIZE;
}
if (inbuf->kh_type == KNET_HEADER_TYPE_DATA) {
if (knet_h->enabled != 1) /* data forward is disabled */
break;
if (knet_h->dst_host_filter_fn) {
int host_idx;
int found = 0;
bcast = knet_h->dst_host_filter_fn(
knet_h->dst_host_filter_fn_private_data,
(const unsigned char *)inbuf->khp_data_userdata,
len - KNET_HEADER_DATA_SIZE,
KNET_NOTIFY_RX,
knet_h->host_id,
inbuf->kh_node,
&channel,
dst_host_ids,
&dst_host_ids_entries);
if (bcast < 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Error from dst_host_filter_fn: %d", bcast);
return;
}
if ((!bcast) && (!dst_host_ids_entries)) {
log_debug(knet_h, KNET_SUB_LINK_T, "Message is unicast but no dst_host_ids_entries");
return;
}
/* check if we are dst for this packet */
if (!bcast) {
for (host_idx = 0; host_idx < dst_host_ids_entries; host_idx++) {
if (dst_host_ids[host_idx] == knet_h->host_id) {
found = 1;
break;
}
}
if (!found) {
log_debug(knet_h, KNET_SUB_LINK_T, "Packet is not for us");
return;
}
}
}
}
if (inbuf->kh_type == KNET_HEADER_TYPE_DATA) {
if (!knet_h->sockfd[channel].in_use) {
log_debug(knet_h, KNET_SUB_LINK_T,
"received packet for channel %d but there is no local sock connected",
channel);
return;
}
memset(iov_out, 0, sizeof(iov_out));
iov_out[0].iov_base = (void *) inbuf->khp_data_userdata;
iov_out[0].iov_len = len - KNET_HEADER_DATA_SIZE;
outlen = writev(knet_h->sockfd[channel].sockfd[knet_h->sockfd[channel].is_created], iov_out, 1);
if (outlen <= 0) {
knet_h->sock_notify_fn(knet_h->sock_notify_fn_private_data,
knet_h->sockfd[channel].sockfd[0],
channel,
KNET_NOTIFY_RX,
outlen,
errno);
return;
}
if (outlen == iov_out[0].iov_len) {
_seq_num_set(src_host, bcast, inbuf->khp_data_seq_num, 0);
}
} else { /* HOSTINFO */
knet_hostinfo = (struct knet_hostinfo *)inbuf->khp_data_userdata;
if (knet_hostinfo->khi_bcast == KNET_HOSTINFO_UCAST) {
bcast = 0;
knet_hostinfo->khi_dst_node_id = ntohs(knet_hostinfo->khi_dst_node_id);
}
if (!_seq_num_lookup(src_host, bcast, inbuf->khp_data_seq_num, 0)) {
return;
}
_seq_num_set(src_host, bcast, inbuf->khp_data_seq_num, 0);
switch(knet_hostinfo->khi_type) {
case KNET_HOSTINFO_TYPE_LINK_UP_DOWN:
src_link = src_host->link +
(knet_hostinfo->khip_link_status_link_id % KNET_MAX_LINK);
/*
* basically if the node is coming back to life from a crash
* we should receive a host info where local previous status == remote current status
* and so we can detect that node is showing up again
* we need to clear cbuffers and notify the node of our status by resending our host info
*/
if ((src_link->remoteconnected == KNET_HOSTINFO_LINK_STATUS_UP) &&
(src_link->remoteconnected == knet_hostinfo->khip_link_status_status)) {
src_link->host_info_up_sent = 0;
}
src_link->remoteconnected = knet_hostinfo->khip_link_status_status;
if (src_link->remoteconnected == KNET_HOSTINFO_LINK_STATUS_DOWN) {
/*
* if a host is disconnecting clean, we note that in donnotremoteupdate
* so that we don't send host info back immediately but we wait
* for the node to send an update when it's alive again
*/
src_link->host_info_up_sent = 0;
src_link->donnotremoteupdate = 1;
} else {
src_link->donnotremoteupdate = 0;
}
log_debug(knet_h, KNET_SUB_LINK_T, "host message up/down. from host: %u link: %u remote connected: %u",
src_host->host_id,
src_link->link_id,
src_link->remoteconnected);
if (_host_dstcache_update_async(knet_h, src_host)) {
log_debug(knet_h, KNET_SUB_LINK_T,
"Unable to update switch cache for host: %u link: %u remote connected: %u)",
src_host->host_id,
src_link->link_id,
src_link->remoteconnected);
}
break;
case KNET_HOSTINFO_TYPE_LINK_TABLE:
break;
default:
log_warn(knet_h, KNET_SUB_LINK_T, "Receiving unknown host info message from host %u", src_host->host_id);
break;
}
}
break;
case KNET_HEADER_TYPE_PING:
outlen = KNET_HEADER_PING_SIZE;
inbuf->kh_type = KNET_HEADER_TYPE_PONG;
inbuf->kh_node = htons(knet_h->host_id);
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(knet_h,
(const unsigned char *)inbuf,
len,
knet_h->recv_from_links_buf_crypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to encrypt pong packet");
break;
}
outbuf = knet_h->recv_from_links_buf_crypt;
}
if (sendto(src_link->outsock, outbuf, outlen, MSG_DONTWAIT | MSG_NOSIGNAL,
(struct sockaddr *) &src_link->dst_addr,
sizeof(struct sockaddr_storage)) != outlen) {
log_debug(knet_h, KNET_SUB_LINK_T,
"Unable to send pong reply (sock: %d) packet (sendto): %d %s. recorded src ip: %s src port: %s dst ip: %s dst port: %s",
src_link->outsock, errno, strerror(errno),
src_link->status.src_ipaddr, src_link->status.src_port,
src_link->status.dst_ipaddr, src_link->status.dst_port);
}
break;
case KNET_HEADER_TYPE_PONG:
clock_gettime(CLOCK_MONOTONIC, &src_link->status.pong_last);
memmove(&recvtime, &inbuf->khp_ping_time[0], sizeof(struct timespec));
timespec_diff(recvtime,
src_link->status.pong_last, &latency_last);
src_link->status.latency =
((src_link->status.latency * src_link->latency_exp) +
((latency_last / 1000llu) *
(src_link->latency_fix - src_link->latency_exp))) /
src_link->latency_fix;
if (src_link->status.latency < src_link->pong_timeout) {
if (!src_link->status.connected) {
if (src_link->received_pong >= src_link->pong_count) {
log_info(knet_h, KNET_SUB_LINK_T, "host: %u link: %u is up",
src_host->host_id, src_link->link_id);
_link_updown(knet_h, src_host->host_id, src_link->link_id, src_link->status.enabled, 1);
} else {
src_link->received_pong++;
log_debug(knet_h, KNET_SUB_LINK_T, "host: %u link: %u received pong: %u",
src_host->host_id, src_link->link_id, src_link->received_pong);
}
}
}
break;
case KNET_HEADER_TYPE_PMTUD:
outlen = KNET_HEADER_PMTUD_SIZE;
inbuf->kh_type = KNET_HEADER_TYPE_PMTUD_REPLY;
inbuf->kh_node = htons(knet_h->host_id);
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(knet_h,
(const unsigned char *)inbuf,
len,
knet_h->recv_from_links_buf_crypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to encrypt PMTUd reply packet");
break;
}
outbuf = knet_h->recv_from_links_buf_crypt;
}
if (sendto(src_link->outsock, outbuf, outlen, MSG_DONTWAIT | MSG_NOSIGNAL,
(struct sockaddr *) &src_link->dst_addr,
sizeof(struct sockaddr_storage)) != outlen) {
log_debug(knet_h, KNET_SUB_LINK_T,
"Unable to send PMTUd reply (sock: %d) packet (sendto): %d %s. recorded src ip: %s src port: %s dst ip: %s dst port: %s",
src_link->outsock, errno, strerror(errno),
src_link->status.src_ipaddr, src_link->status.src_port,
src_link->status.dst_ipaddr, src_link->status.dst_port);
}
break;
case KNET_HEADER_TYPE_PMTUD_REPLY:
if (pthread_mutex_lock(&knet_h->pmtud_mutex) != 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to get mutex lock");
break;
}
src_link->last_recv_mtu = inbuf->khp_pmtud_size;
pthread_cond_signal(&knet_h->pmtud_cond);
pthread_mutex_unlock(&knet_h->pmtud_mutex);
break;
default:
return;
}
}
static void _handle_recv_from_links(knet_handle_t knet_h, int sockfd, struct mmsghdr *msg)
{
int i, msg_recv;
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_LINK_T, "Unable to get read lock");
return;
}
msg_recv = recvmmsg(sockfd, msg, PCKT_FRAG_MAX, MSG_DONTWAIT | MSG_NOSIGNAL, NULL);
if (msg_recv < 0) {
log_err(knet_h, KNET_SUB_LINK_T, "No message received from recvmmsg: %s", strerror(errno));
goto exit_unlock;
}
if (msg_recv == 0) {
_close_socket(knet_h, sockfd);
}
for (i = 0; i < msg_recv; i++) {
+#ifdef HAVE_NETINET_SCTP_H
if (msg[i].msg_hdr.msg_flags & MSG_NOTIFICATION) {
_handle_socket_notification(knet_h, sockfd, msg[i].msg_hdr.msg_iov, msg[i].msg_hdr.msg_iovlen);
}
+#endif
if (msg[i].msg_len == 0) {
_close_socket(knet_h, sockfd);
goto exit_unlock;
} else {
_parse_recv_from_links(knet_h, (struct sockaddr_storage *)&msg[i].msg_hdr.msg_name, i, msg[i].msg_len);
}
}
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
}
void *_handle_recv_from_links_thread(void *data)
{
int i, nev;
knet_handle_t knet_h = (knet_handle_t) data;
struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
struct sockaddr_storage address[PCKT_FRAG_MAX];
struct mmsghdr msg[PCKT_FRAG_MAX];
struct iovec iov_in[PCKT_FRAG_MAX];
memset(&msg, 0, sizeof(struct mmsghdr));
for (i = 0; i < PCKT_FRAG_MAX; i++) {
iov_in[i].iov_base = (void *)knet_h->recv_from_links_buf[i];
iov_in[i].iov_len = KNET_DATABUFSIZE;
memset(&msg[i].msg_hdr, 0, sizeof(struct msghdr));
msg[i].msg_hdr.msg_name = &address[i];
msg[i].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage);
msg[i].msg_hdr.msg_iov = &iov_in[i];
msg[i].msg_hdr.msg_iovlen = 1;
}
while (!shutdown_in_progress(knet_h)) {
nev = epoll_wait(knet_h->recv_from_links_epollfd, events, KNET_EPOLL_MAX_EVENTS, -1);
for (i = 0; i < nev; i++) {
_handle_recv_from_links(knet_h, events[i].data.fd, msg);
}
}
return NULL;
}
diff --git a/libknet/transports.h b/libknet/transports.h
index 3e4910f1..4b74839b 100644
--- a/libknet/transports.h
+++ b/libknet/transports.h
@@ -1,13 +1,25 @@
-#include <netinet/in.h>
-#include <netinet/sctp.h>
+/*
+ * Copyright (C) 2016 Red Hat, Inc. All rights reserved.
+ *
+ * Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
+ *
+ * This software licensed under GPL-2.0+, LGPL-2.0+
+ */
+
+#ifndef __TRANSPORTS_H__
+#define __TRANSPORTS_H__
knet_transport_ops_t *get_udp_transport(void);
+
+#ifdef HAVE_NETINET_SCTP_H
knet_transport_ops_t *get_sctp_transport(void);
+#endif
int _configure_transport_socket(knet_handle_t knet_h, int sock, struct sockaddr_storage *address, const char *type);
void _close_socket(knet_handle_t knet_h, int sockfd);
void _handle_socket_notification(knet_handle_t knet_h, int sockfd, struct iovec *iov, size_t iovlen);
int _transport_addrtostr(const struct sockaddr *sa, socklen_t salen, char *str[2]);
void _transport_addrtostr_free(char *str[2]);
+#endif

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