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diff --git a/build-aux/knet_valgrind_memcheck.supp b/build-aux/knet_valgrind_memcheck.supp
index 8b3f95f3..e0f49d06 100644
--- a/build-aux/knet_valgrind_memcheck.supp
+++ b/build-aux/knet_valgrind_memcheck.supp
@@ -1,590 +1,607 @@
{
lzma internal stuff
Memcheck:Cond
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_stream_header_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_crc32
fun:lzma_stream_header_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_crc32
fun:lzma_stream_header_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_block_header_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:is_overlap
fun:memcpy@@GLIBC_2.14
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
}
{
lzma internal stuff
Memcheck:Cond
fun:memcpy@@GLIBC_2.14
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
}
{
lzma internal stuff
Memcheck:Value8
fun:memcpy@@GLIBC_2.14
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_vli_encode
fun:lzma_filter_flags_encode
fun:lzma_block_header_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_filter_flags_encode
fun:lzma_block_header_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:memset
fun:lzma_block_header_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:memset
fun:lzma_block_header_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_block_unpadded_size
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_index_append
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_vli_size
fun:lzma_index_append
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_vli_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_vli_encode
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_crc32
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_crc32
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_index_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_stream_footer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Value8
fun:lzma_crc32
fun:lzma_stream_footer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
fun:lzma_crc32
fun:lzma_stream_footer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
fun:clone
}
{
lzma internal stuff
Memcheck:Cond
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
obj:/usr/lib64/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
}
{
lzma internal stuff (Debian Unstable)
Memcheck:Cond
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
}
{
lzma internal stuff (Debian Experimental)
Memcheck:Cond
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
obj:*/libknet/.libs/compress_lzma.so
obj:*
}
{
lzma internal stuff (Debian / Ubuntu)
Memcheck:Cond
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
obj:/lib/x86_64-linux-gnu/liblzma.so.5.2.2
fun:lzma_block_buffer_encode
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:compress_lib_test
fun:compress_cfg
fun:knet_handle_compress
fun:test
}
{
lzma internal stuff (Ubuntu 17.10 i386)
Memcheck:Cond
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
fun:start_thread
}
{
lzma internal stuff (Ubuntu 17.10 i386)
Memcheck:Cond
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:compress
fun:_parse_recv_from_sock
fun:_handle_send_to_links
fun:_handle_send_to_links_thread
}
{
lzma internal stuff (Ubuntu 17.10 i386)
Memcheck:Cond
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
obj:/lib/i386-linux-gnu/liblzma.so.5.2.2
fun:lzma_stream_buffer_encode
fun:lzma_easy_buffer_encode
fun:lzma_compress
fun:compress_lib_test
fun:compress_cfg
fun:knet_handle_compress
}
{
nss internal leak (3.38+) non recurring
Memcheck:Leak
match-leak-kinds: definite
fun:malloc
obj:*
obj:*
obj:*
obj:*
obj:*
fun:init_nss
fun:nsscrypto_init
fun:crypto_init
fun:knet_handle_crypto
fun:test
fun:main
}
{
nss internal leak (3.38+) non recurring
Memcheck:Leak
match-leak-kinds: definite
fun:calloc
obj:*
obj:*
obj:*
obj:*
obj:*
fun:init_nss
fun:nsscrypto_init
fun:crypto_init
fun:knet_handle_crypto
fun:test
fun:main
}
{
nss internal leak (3.38+) non recurring
Memcheck:Addr8
obj:/usr/lib64/libp11-kit.so.0.3.0
obj:/usr/lib64/libp11-kit.so.0.3.0
fun:_dl_close_worker
fun:_dl_close
fun:_dl_catch_exception
fun:_dl_catch_error
fun:_dlerror_run
fun:dlclose
fun:PR_UnloadLibrary
obj:/usr/lib64/libnss3.so
obj:/usr/lib64/libnss3.so
obj:/usr/lib64/libnss3.so
}
+{
+ nss internal leak (3.41) non recurring (spotted on f29)
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:*
+ obj:/usr/lib64/libnss3.so
+}
diff --git a/libknet/handle.c b/libknet/handle.c
index 07a616c2..de950e0f 100644
--- a/libknet/handle.c
+++ b/libknet/handle.c
@@ -1,1611 +1,1689 @@
/*
* Copyright (C) 2010-2018 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/uio.h>
#include <math.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "internals.h"
#include "crypto.h"
#include "links.h"
#include "compress.h"
#include "compat.h"
#include "common.h"
#include "threads_common.h"
#include "threads_heartbeat.h"
#include "threads_pmtud.h"
#include "threads_dsthandler.h"
#include "threads_rx.h"
#include "threads_tx.h"
#include "transports.h"
#include "transport_common.h"
#include "logging.h"
static pthread_mutex_t handle_config_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_rwlock_t shlib_rwlock;
static uint8_t shlib_wrlock_init = 0;
static uint32_t knet_ref = 0;
static int _init_shlib_tracker(knet_handle_t knet_h)
{
int savederrno = 0;
if (!shlib_wrlock_init) {
savederrno = pthread_rwlock_init(&shlib_rwlock, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize shared lib rwlock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
shlib_wrlock_init = 1;
}
return 0;
}
static void _fini_shlib_tracker(void)
{
if (knet_ref == 0) {
pthread_rwlock_destroy(&shlib_rwlock);
shlib_wrlock_init = 0;
}
return;
}
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;
}
savederrno = pthread_mutex_init(&knet_h->threads_status_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize threads status 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_mutex_init(&knet_h->kmtu_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize kernel_mtu 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->hb_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize hb_thread 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;
}
savederrno = pthread_mutex_init(&knet_h->backoff_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize pong timeout backoff mutex: %s",
strerror(savederrno));
goto exit_fail;
}
savederrno = pthread_mutex_init(&knet_h->tx_seq_num_mutex, NULL);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to initialize tx_seq_num_mutex mutex: %s",
strerror(savederrno));
goto exit_fail;
}
return 0;
exit_fail:
errno = savederrno;
return -1;
}
static void _destroy_locks(knet_handle_t knet_h)
{
pthread_rwlock_destroy(&knet_h->global_rwlock);
pthread_mutex_destroy(&knet_h->pmtud_mutex);
pthread_mutex_destroy(&knet_h->kmtu_mutex);
pthread_cond_destroy(&knet_h->pmtud_cond);
pthread_mutex_destroy(&knet_h->hb_mutex);
pthread_mutex_destroy(&knet_h->tx_mutex);
pthread_mutex_destroy(&knet_h->backoff_mutex);
pthread_mutex_destroy(&knet_h->tx_seq_num_mutex);
pthread_mutex_destroy(&knet_h->threads_status_mutex);
}
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);
}
for (i = 0; i < PCKT_RX_BUFS; i++) {
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->recv_from_sock_buf = malloc(KNET_DATABUFSIZE);
if (!knet_h->recv_from_sock_buf) {
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, 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);
knet_h->recv_from_links_buf_decompress = malloc(KNET_DATABUFSIZE_COMPRESS);
if (!knet_h->recv_from_links_buf_decompress) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for decompress buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->recv_from_links_buf_decompress, 0, KNET_DATABUFSIZE_COMPRESS);
knet_h->send_to_links_buf_compress = malloc(KNET_DATABUFSIZE_COMPRESS);
if (!knet_h->send_to_links_buf_compress) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to allocate memory for compress buffer: %s",
strerror(savederrno));
goto exit_fail;
}
memset(knet_h->send_to_links_buf_compress, 0, KNET_DATABUFSIZE_COMPRESS);
memset(knet_h->knet_transport_fd_tracker, KNET_MAX_TRANSPORTS, sizeof(knet_h->knet_transport_fd_tracker));
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->send_to_links_buf_crypt[i]);
}
for (i = 0; i < PCKT_RX_BUFS; i++) {
free(knet_h->recv_from_links_buf[i]);
}
free(knet_h->recv_from_links_buf_decompress);
free(knet_h->send_to_links_buf_compress);
free(knet_h->recv_from_sock_buf);
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;
set_thread_status(knet_h, KNET_THREAD_PMTUD, KNET_THREAD_REGISTERED);
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;
}
set_thread_status(knet_h, KNET_THREAD_DST_LINK, KNET_THREAD_REGISTERED);
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;
}
set_thread_status(knet_h, KNET_THREAD_TX, KNET_THREAD_REGISTERED);
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;
}
set_thread_status(knet_h, KNET_THREAD_RX, KNET_THREAD_REGISTERED);
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;
}
set_thread_status(knet_h, KNET_THREAD_HB, KNET_THREAD_REGISTERED);
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_threads(knet_handle_t knet_h)
{
void *retval;
wait_all_threads_status(knet_h, KNET_THREAD_STOPPED);
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);
}
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(knet_node_id_t host_id,
int log_fd,
uint8_t default_log_level,
uint64_t flags)
{
knet_handle_t knet_h;
int savederrno = 0;
struct rlimit cur;
if (getrlimit(RLIMIT_NOFILE, &cur) < 0) {
return NULL;
}
if ((log_fd < 0) || ((unsigned int)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;
}
if (flags > KNET_HANDLE_FLAG_PRIVILEGED * 2 - 1) {
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));
/*
* setting up some handle data so that we can use logging
* also when initializing the library global locks
* and trackers
*/
knet_h->flags = flags;
/*
* 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 internal threads time resolutions
+ */
+
+ knet_h->threads_timer_res = KNET_THREADS_TIMER_RES;
+
/*
* set pmtud default timers
*/
knet_h->pmtud_interval = KNET_PMTUD_DEFAULT_INTERVAL;
/*
* set transports reconnect default timers
*/
knet_h->reconnect_int = KNET_TRANSPORT_DEFAULT_RECONNECT_INTERVAL;
/*
* Set 'min' stats to the maximum value so the
* first value we get is always less
*/
knet_h->stats.tx_compress_time_min = UINT64_MAX;
knet_h->stats.rx_compress_time_min = UINT64_MAX;
knet_h->stats.tx_crypt_time_min = UINT64_MAX;
knet_h->stats.rx_crypt_time_min = UINT64_MAX;
/*
* init global shlib tracker
*/
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));
free(knet_h);
knet_h = NULL;
errno = savederrno;
return NULL;
}
knet_ref++;
if (_init_shlib_tracker(knet_h) < 0) {
savederrno = errno;
log_err(knet_h, KNET_SUB_HANDLE, "Unable to init handles traceker: %s",
strerror(savederrno));
errno = savederrno;
goto exit_fail;
}
pthread_mutex_unlock(&handle_config_mutex);
/*
* 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;
}
if (compress_init(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* create epoll fds
*/
if (_init_epolls(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* start transports
*/
if (start_all_transports(knet_h)) {
savederrno = errno;
goto exit_fail;
}
/*
* start internal threads
*/
if (_start_threads(knet_h)) {
savederrno = errno;
goto exit_fail;
}
wait_all_threads_status(knet_h, KNET_THREAD_STARTED);
errno = 0;
return knet_h;
exit_fail:
knet_handle_free(knet_h);
errno = savederrno;
return NULL;
}
int knet_handle_free(knet_handle_t knet_h)
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
savederrno = get_global_wrlock(knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
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);
errno = savederrno;
return -1;
}
knet_h->fini_in_progress = 1;
pthread_rwlock_unlock(&knet_h->global_rwlock);
_stop_threads(knet_h);
stop_all_transports(knet_h);
_close_epolls(knet_h);
_destroy_buffers(knet_h);
_close_socks(knet_h);
crypto_fini(knet_h);
compress_fini(knet_h, 1);
_destroy_locks(knet_h);
free(knet_h);
knet_h = NULL;
(void)pthread_mutex_lock(&handle_config_mutex);
knet_ref--;
_fini_shlib_tracker();
pthread_mutex_unlock(&handle_config_mutex);
errno = 0;
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 = get_global_wrlock(knet_h);
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);
errno = err ? savederrno : 0;
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 = get_global_wrlock(knet_h);
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 = err ? savederrno : 0;
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 = get_global_wrlock(knet_h);
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 = err ? savederrno : 0;
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 = err ? savederrno : 0;
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 = err ? savederrno : 0;
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,
knet_node_id_t this_host_id,
knet_node_id_t src_node_id,
int8_t *channel,
knet_node_id_t *dst_host_ids,
size_t *dst_host_ids_entries))
{
int savederrno = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
savederrno = get_global_wrlock(knet_h);
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);
errno = 0;
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 > 1) {
errno = EINVAL;
return -1;
}
savederrno = get_global_wrlock(knet_h);
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);
errno = 0;
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 read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
*interval = knet_h->pmtud_interval;
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = 0;
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 = get_global_wrlock(knet_h);
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);
errno = 0;
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 = get_global_wrlock(knet_h);
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);
errno = 0;
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 read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
*data_mtu = knet_h->data_mtu;
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = 0;
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 = get_global_wrlock(knet_h);
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 %d): %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 %d): %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;
savederrno = errno;
}
exit_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = err ? savederrno : 0;
return err;
}
int knet_handle_compress(knet_handle_t knet_h, struct knet_handle_compress_cfg *knet_handle_compress_cfg)
{
int savederrno = 0;
int err = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!knet_handle_compress_cfg) {
errno = EINVAL;
return -1;
}
savederrno = get_global_wrlock(knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
compress_fini(knet_h, 0);
err = compress_cfg(knet_h, knet_handle_compress_cfg);
savederrno = errno;
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = err ? savederrno : 0;
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 = err ? savederrno : 0;
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 = err ? savederrno : 0;
return err;
}
int knet_handle_get_stats(knet_handle_t knet_h, struct knet_handle_stats *stats, size_t struct_size)
{
int savederrno = 0;
int err = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (!stats) {
errno = EINVAL;
return -1;
}
savederrno = get_global_wrlock(knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
if (struct_size > sizeof(struct knet_handle_stats)) {
struct_size = sizeof(struct knet_handle_stats);
}
memmove(stats, &knet_h->stats, struct_size);
/*
* TX crypt stats only count the data packets sent, so add in the ping/pong/pmtud figures
* RX is OK as it counts them before they are sorted.
*/
stats->tx_crypt_packets += knet_h->stats_extra.tx_crypt_ping_packets +
knet_h->stats_extra.tx_crypt_pong_packets +
knet_h->stats_extra.tx_crypt_pmtu_packets +
knet_h->stats_extra.tx_crypt_pmtu_reply_packets;
/* Tell the caller our full size in case they have an old version */
stats->size = sizeof(struct knet_handle_stats);
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = err ? savederrno : 0;
return err;
}
int knet_handle_clear_stats(knet_handle_t knet_h, int clear_option)
{
int savederrno = 0;
int err = 0;
if (!knet_h) {
errno = EINVAL;
return -1;
}
if (clear_option != KNET_CLEARSTATS_HANDLE_ONLY &&
clear_option != KNET_CLEARSTATS_HANDLE_AND_LINK) {
errno = EINVAL;
return -1;
}
savederrno = get_global_wrlock(knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
memset(&knet_h->stats, 0, sizeof(struct knet_handle_stats));
memset(&knet_h->stats_extra, 0, sizeof(struct knet_handle_stats_extra));
if (clear_option == KNET_CLEARSTATS_HANDLE_AND_LINK) {
_link_clear_stats(knet_h);
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = err ? savederrno : 0;
return err;
}
+int knet_handle_set_threads_timer_res(knet_handle_t knet_h,
+ useconds_t timeres)
+{
+ int savederrno = 0;
+ int err = 0;
+
+ if (!knet_h) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /*
+ * most threads use timeres / 1000 as timeout on epoll.
+ * anything below 1000 would generate a result of 0, making
+ * the threads spin at 100% cpu
+ */
+ if ((timeres > 0) && (timeres < 1000)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ savederrno = get_global_wrlock(knet_h);
+ if (savederrno) {
+ log_err(knet_h, KNET_SUB_HANDLE, "Unable to get write lock: %s",
+ strerror(savederrno));
+ errno = savederrno;
+ return -1;
+ }
+
+ if (timeres) {
+ knet_h->threads_timer_res = timeres;
+ log_debug(knet_h, KNET_SUB_HANDLE, "Setting new threads timer resolution to %u usecs", knet_h->threads_timer_res);
+ } else {
+ knet_h->threads_timer_res = KNET_THREADS_TIMER_RES;
+ log_debug(knet_h, KNET_SUB_HANDLE, "Setting new threads timer resolution to default %u usecs", knet_h->threads_timer_res);
+ }
+
+ pthread_rwlock_unlock(&knet_h->global_rwlock);
+ errno = err ? savederrno : 0;
+ return err;
+}
+
+int knet_handle_get_threads_timer_res(knet_handle_t knet_h,
+ useconds_t *timeres)
+{
+ int savederrno = 0;
+ int err = 0;
+
+ if (!knet_h) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (!timeres) {
+ 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;
+ }
+
+ *timeres = knet_h->threads_timer_res;
+
+ pthread_rwlock_unlock(&knet_h->global_rwlock);
+ errno = err ? savederrno : 0;
+ return err;
+}
diff --git a/libknet/internals.h b/libknet/internals.h
index 679b49d2..223e80fd 100644
--- a/libknet/internals.h
+++ b/libknet/internals.h
@@ -1,522 +1,523 @@
/*
* Copyright (C) 2010-2018 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+
*/
#ifndef __KNET_INTERNALS_H__
#define __KNET_INTERNALS_H__
/*
* NOTE: you shouldn't need to include this header normally
*/
#include <pthread.h>
#include "libknet.h"
#include "onwire.h"
#include "compat.h"
#include "threads_common.h"
#define KNET_DATABUFSIZE KNET_MAX_PACKET_SIZE + KNET_HEADER_ALL_SIZE
#define KNET_DATABUFSIZE_CRYPT_PAD 1024
#define KNET_DATABUFSIZE_CRYPT KNET_DATABUFSIZE + KNET_DATABUFSIZE_CRYPT_PAD
#define KNET_DATABUFSIZE_COMPRESS_PAD 1024
#define KNET_DATABUFSIZE_COMPRESS KNET_DATABUFSIZE + KNET_DATABUFSIZE_COMPRESS_PAD
#define KNET_RING_RCVBUFF 8388608
#define PCKT_FRAG_MAX UINT8_MAX
#define PCKT_RX_BUFS 512
#define KNET_EPOLL_MAX_EVENTS KNET_DATAFD_MAX
typedef void *knet_transport_link_t; /* per link transport handle */
typedef void *knet_transport_t; /* per knet_h transport handle */
struct knet_transport_ops; /* Forward because of circular dependancy */
struct knet_mmsghdr {
struct msghdr msg_hdr; /* Message header */
unsigned int msg_len; /* Number of bytes transmitted */
};
struct knet_link {
/* required */
struct sockaddr_storage src_addr;
struct sockaddr_storage dst_addr;
/* configurable */
unsigned int dynamic; /* see KNET_LINK_DYN_ define above */
uint8_t priority; /* higher priority == preferred for A/P */
unsigned long long ping_interval; /* interval */
unsigned long long pong_timeout; /* timeout */
unsigned long long pong_timeout_adj; /* timeout adjusted for latency */
uint8_t pong_timeout_backoff; /* see link.h for definition */
unsigned int latency_fix; /* precision */
uint8_t pong_count; /* how many ping/pong to send/receive before link is up */
uint64_t flags;
/* status */
struct knet_link_status status;
/* internals */
uint8_t link_id;
uint8_t transport_type; /* #defined constant from API */
knet_transport_link_t transport_link; /* link_info_t from transport */
int outsock;
unsigned int configured:1; /* set to 1 if src/dst have been configured transport initialized on this link*/
unsigned int transport_connected:1; /* set to 1 if lower level transport is connected */
unsigned int latency_exp;
uint8_t received_pong;
struct timespec ping_last;
/* used by PMTUD thread as temp per-link variables and should always contain the onwire_len value! */
uint32_t proto_overhead;
struct timespec pmtud_last;
uint32_t last_ping_size;
uint32_t last_good_mtu;
uint32_t last_bad_mtu;
uint32_t last_sent_mtu;
uint32_t last_recv_mtu;
uint8_t has_valid_mtu;
};
#define KNET_CBUFFER_SIZE 4096
struct knet_host_defrag_buf {
char buf[KNET_DATABUFSIZE];
uint8_t in_use; /* 0 buffer is free, 1 is in use */
seq_num_t pckt_seq; /* identify the pckt we are receiving */
uint8_t frag_recv; /* how many frags did we receive */
uint8_t frag_map[PCKT_FRAG_MAX];/* bitmap of what we received? */
uint8_t last_first; /* special case if we receive the last fragment first */
uint16_t frag_size; /* normal frag size (not the last one) */
uint16_t last_frag_size; /* the last fragment might not be aligned with MTU size */
struct timespec last_update; /* keep time of the last pckt */
};
struct knet_host {
/* required */
knet_node_id_t host_id;
/* configurable */
uint8_t link_handler_policy;
char name[KNET_MAX_HOST_LEN];
/* status */
struct knet_host_status status;
/* internals */
char circular_buffer[KNET_CBUFFER_SIZE];
seq_num_t rx_seq_num;
seq_num_t untimed_rx_seq_num;
seq_num_t timed_rx_seq_num;
uint8_t got_data;
/* defrag/reassembly buffers */
struct knet_host_defrag_buf defrag_buf[KNET_MAX_LINK];
char circular_buffer_defrag[KNET_CBUFFER_SIZE];
/* link stuff */
struct knet_link link[KNET_MAX_LINK];
uint8_t active_link_entries;
uint8_t active_links[KNET_MAX_LINK];
struct knet_host *next;
};
struct knet_sock {
int sockfd[2]; /* sockfd[0] will always be application facing
* and sockfd[1] internal if sockpair has been created by knet */
int is_socket; /* check if it's a socket for recvmmsg usage */
int is_created; /* knet created this socket and has to clean up on exit/del */
int in_use; /* set to 1 if it's use, 0 if free */
int has_error; /* set to 1 if there were errors reading from the sock
* and socket has been removed from epoll */
};
struct knet_fd_trackers {
uint8_t transport; /* transport type (UDP/SCTP...) */
uint8_t data_type; /* internal use for transport to define what data are associated
* to this fd */
void *data; /* pointer to the data */
};
#define KNET_MAX_FDS KNET_MAX_HOST * KNET_MAX_LINK * 4
#define KNET_MAX_COMPRESS_METHODS UINT8_MAX
struct knet_handle_stats_extra {
uint64_t tx_crypt_pmtu_packets;
uint64_t tx_crypt_pmtu_reply_packets;
uint64_t tx_crypt_ping_packets;
uint64_t tx_crypt_pong_packets;
};
struct knet_handle {
knet_node_id_t host_id;
unsigned int enabled:1;
struct knet_sock sockfd[KNET_DATAFD_MAX];
int logfd;
uint8_t log_levels[KNET_MAX_SUBSYSTEMS];
int hostsockfd[2];
int dstsockfd[2];
int send_to_links_epollfd;
int recv_from_links_epollfd;
int dst_link_handler_epollfd;
unsigned int pmtud_interval;
unsigned int data_mtu; /* contains the max data size that we can send onwire
* without frags */
struct knet_host *host_head;
struct knet_host *host_index[KNET_MAX_HOST];
knet_transport_t transports[KNET_MAX_TRANSPORTS+1];
struct knet_fd_trackers knet_transport_fd_tracker[KNET_MAX_FDS]; /* track status for each fd handled by transports */
struct knet_handle_stats stats;
struct knet_handle_stats_extra stats_extra;
uint32_t reconnect_int;
knet_node_id_t host_ids[KNET_MAX_HOST];
size_t host_ids_entries;
struct knet_header *recv_from_sock_buf;
struct knet_header *send_to_links_buf[PCKT_FRAG_MAX];
struct knet_header *recv_from_links_buf[PCKT_RX_BUFS];
struct knet_header *pingbuf;
struct knet_header *pmtudbuf;
uint8_t threads_status[KNET_THREAD_MAX];
+ useconds_t threads_timer_res;
pthread_mutex_t threads_status_mutex;
pthread_t send_to_links_thread;
pthread_t recv_from_links_thread;
pthread_t heartbt_thread;
pthread_t dst_link_handler_thread;
pthread_t pmtud_link_handler_thread;
pthread_rwlock_t global_rwlock; /* global config lock */
pthread_mutex_t pmtud_mutex; /* pmtud mutex to handle conditional send/recv + timeout */
pthread_cond_t pmtud_cond; /* conditional for above */
pthread_mutex_t tx_mutex; /* used to protect knet_send_sync and TX thread */
pthread_mutex_t hb_mutex; /* used to protect heartbeat thread and seq_num broadcasting */
pthread_mutex_t backoff_mutex; /* used to protect dst_link->pong_timeout_adj */
pthread_mutex_t kmtu_mutex; /* used to protect kernel_mtu */
uint32_t kernel_mtu; /* contains the MTU detected by the kernel on a given link */
int pmtud_waiting;
int pmtud_running;
int pmtud_forcerun;
int pmtud_abort;
struct crypto_instance *crypto_instance;
size_t sec_header_size;
size_t sec_block_size;
size_t sec_hash_size;
size_t sec_salt_size;
unsigned char *send_to_links_buf_crypt[PCKT_FRAG_MAX];
unsigned char *recv_from_links_buf_crypt;
unsigned char *recv_from_links_buf_decrypt;
unsigned char *pingbuf_crypt;
unsigned char *pmtudbuf_crypt;
int compress_model;
int compress_level;
size_t compress_threshold;
void *compress_int_data[KNET_MAX_COMPRESS_METHODS]; /* for compress method private data */
unsigned char *recv_from_links_buf_decompress;
unsigned char *send_to_links_buf_compress;
seq_num_t tx_seq_num;
pthread_mutex_t tx_seq_num_mutex;
uint8_t has_loop_link;
uint8_t loop_link;
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,
knet_node_id_t this_host_id,
knet_node_id_t src_node_id,
int8_t *channel,
knet_node_id_t *dst_host_ids,
size_t *dst_host_ids_entries);
void *pmtud_notify_fn_private_data;
void (*pmtud_notify_fn) (
void *private_data,
unsigned int data_mtu);
void *host_status_change_notify_fn_private_data;
void (*host_status_change_notify_fn) (
void *private_data,
knet_node_id_t host_id,
uint8_t reachable,
uint8_t remote,
uint8_t external);
void *link_status_change_notify_fn_private_data;
void (*link_status_change_notify_fn) (
void *private_data,
knet_node_id_t host_id,
uint8_t link_id,
uint8_t connected,
uint8_t remote,
uint8_t external);
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 fini_in_progress;
uint64_t flags;
};
extern pthread_rwlock_t shlib_rwlock; /* global shared lib load lock */
/*
* NOTE: every single operation must be implementend
* for every protocol.
*/
typedef struct knet_transport_ops {
/*
* transport generic information
*/
const char *transport_name;
const uint8_t transport_id;
const uint8_t built_in;
uint32_t transport_mtu_overhead;
/*
* transport init must allocate the new transport
* and perform all internal initializations
* (threads, lists, etc).
*/
int (*transport_init)(knet_handle_t knet_h);
/*
* transport free must releases _all_ resources
* allocated by tranport_init
*/
int (*transport_free)(knet_handle_t knet_h);
/*
* link operations should take care of all the
* sockets and epoll management for a given link/transport set
* transport_link_disable should return err = -1 and errno = EBUSY
* if listener is still in use, and any other errno in case
* the link cannot be disabled.
*
* set_config/clear_config are invoked in global write lock context
*/
int (*transport_link_set_config)(knet_handle_t knet_h, struct knet_link *link);
int (*transport_link_clear_config)(knet_handle_t knet_h, struct knet_link *link);
/*
* transport callback for incoming dynamic connections
* this is called in global read lock context
*/
int (*transport_link_dyn_connect)(knet_handle_t knet_h, int sockfd, struct knet_link *link);
/*
* per transport error handling of recvmmsg
* (see _handle_recv_from_links comments for details)
*/
/*
* transport_rx_sock_error is invoked when recvmmsg returns <= 0
*
* transport_rx_sock_error is invoked with both global_rdlock
*/
int (*transport_rx_sock_error)(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno);
/*
* transport_tx_sock_error is invoked with global_rwlock and
* it's invoked when sendto or sendmmsg returns =< 0
*
* it should return:
* -1 on internal error
* 0 ignore error and continue
* 1 retry
* any sleep or wait action should happen inside the transport code
*/
int (*transport_tx_sock_error)(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno);
/*
* this function is called on _every_ received packet
* to verify if the packet is data or internal protocol error handling
*
* it should return:
* -1 on error
* 0 packet is not data and we should continue the packet process loop
* 1 packet is not data and we should STOP the packet process loop
* 2 packet is data and should be parsed as such
*
* transport_rx_is_data is invoked with both global_rwlock
* and fd_tracker read lock (from RX thread)
*/
int (*transport_rx_is_data)(knet_handle_t knet_h, int sockfd, struct knet_mmsghdr *msg);
} knet_transport_ops_t;
socklen_t sockaddr_len(const struct sockaddr_storage *ss);
struct pretty_names {
const char *name;
uint8_t val;
};
/**
* This is a kernel style list implementation.
*
* @author Steven Dake <sdake@redhat.com>
*/
struct knet_list_head {
struct knet_list_head *next;
struct knet_list_head *prev;
};
/**
* @def KNET_LIST_DECLARE()
* Declare and initialize a list head.
*/
#define KNET_LIST_DECLARE(name) \
struct knet_list_head name = { &(name), &(name) }
#define KNET_INIT_LIST_HEAD(ptr) do { \
(ptr)->next = (ptr); (ptr)->prev = (ptr); \
} while (0)
/**
* Initialize the list entry.
*
* Points next and prev pointers to head.
* @param head pointer to the list head
*/
static inline void knet_list_init(struct knet_list_head *head)
{
head->next = head;
head->prev = head;
}
/**
* Add this element to the list.
*
* @param element the new element to insert.
* @param head pointer to the list head
*/
static inline void knet_list_add(struct knet_list_head *element,
struct knet_list_head *head)
{
head->next->prev = element;
element->next = head->next;
element->prev = head;
head->next = element;
}
/**
* Add to the list (but at the end of the list).
*
* @param element pointer to the element to add
* @param head pointer to the list head
* @see knet_list_add()
*/
static inline void knet_list_add_tail(struct knet_list_head *element,
struct knet_list_head *head)
{
head->prev->next = element;
element->next = head;
element->prev = head->prev;
head->prev = element;
}
/**
* Delete an entry from the list.
*
* @param _remove the list item to remove
*/
static inline void knet_list_del(struct knet_list_head *_remove)
{
_remove->next->prev = _remove->prev;
_remove->prev->next = _remove->next;
}
/**
* Replace old entry by new one
* @param old: the element to be replaced
* @param new: the new element to insert
*/
static inline void knet_list_replace(struct knet_list_head *old,
struct knet_list_head *new)
{
new->next = old->next;
new->next->prev = new;
new->prev = old->prev;
new->prev->next = new;
}
/**
* Tests whether list is the last entry in list head
* @param list: the entry to test
* @param head: the head of the list
* @return boolean true/false
*/
static inline int knet_list_is_last(const struct knet_list_head *list,
const struct knet_list_head *head)
{
return list->next == head;
}
/**
* A quick test to see if the list is empty (pointing to it's self).
* @param head pointer to the list head
* @return boolean true/false
*/
static inline int32_t knet_list_empty(const struct knet_list_head *head)
{
return head->next == head;
}
/**
* Get the struct for this entry
* @param ptr: the &struct list_head pointer.
* @param type: the type of the struct this is embedded in.
* @param member: the name of the list_struct within the struct.
*/
#define knet_list_entry(ptr,type,member)\
((type *)((char *)(ptr)-(char*)(&((type *)0)->member)))
/**
* Get the first element from a list
* @param ptr: the &struct list_head pointer.
* @param type: the type of the struct this is embedded in.
* @param member: the name of the list_struct within the struct.
*/
#define knet_list_first_entry(ptr, type, member) \
knet_list_entry((ptr)->next, type, member)
/**
* Iterate over a list
* @param pos: the &struct list_head to use as a loop counter.
* @param head: the head for your list.
*/
#define knet_list_for_each(pos, head) \
for (pos = (head)->next; pos != (head); pos = pos->next)
/**
* Iterate over a list backwards
* @param pos: the &struct list_head to use as a loop counter.
* @param head: the head for your list.
*/
#define knet_list_for_each_reverse(pos, head) \
for (pos = (head)->prev; pos != (head); pos = pos->prev)
/**
* Iterate over a list safe against removal of list entry
* @param pos: the &struct list_head to use as a loop counter.
* @param n: another &struct list_head to use as temporary storage
* @param head: the head for your list.
*/
#define knet_list_for_each_safe(pos, n, head) \
for (pos = (head)->next, n = pos->next; pos != (head); \
pos = n, n = pos->next)
/**
* Iterate over list of given type
* @param pos: the type * to use as a loop counter.
* @param head: the head for your list.
* @param member: the name of the list_struct within the struct.
*/
#define knet_list_for_each_entry(pos, head, member) \
for (pos = knet_list_entry((head)->next, typeof(*pos), member); \
&pos->member != (head); \
pos = knet_list_entry(pos->member.next, typeof(*pos), member))
#endif
diff --git a/libknet/libknet.h b/libknet/libknet.h
index 730a7ef4..05fbe003 100644
--- a/libknet/libknet.h
+++ b/libknet/libknet.h
@@ -1,2017 +1,2074 @@
/*
* Copyright (C) 2010-2018 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+
*/
#ifndef __LIBKNET_H__
#define __LIBKNET_H__
#include <stdint.h>
#include <time.h>
#include <netinet/in.h>
#include <unistd.h>
#include <limits.h>
/**
* @file libknet.h
* @brief kronosnet API include file
* @copyright Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved.
*
* Kronosnet is an advanced VPN system for High Availability applications.
*/
#define KNET_API_VER 2
/*
* libknet limits
*/
/*
* Maximum number of hosts
*/
typedef uint16_t knet_node_id_t;
#define KNET_MAX_HOST 65536
/*
* Maximum number of links between 2 hosts
*/
#define KNET_MAX_LINK 8
/*
* Maximum packet size that should be written to datafd
* see knet_handle_new for details
*/
#define KNET_MAX_PACKET_SIZE 65536
/*
* Buffers used for pretty logging
* host is used to store both ip addresses and hostnames
*/
#define KNET_MAX_HOST_LEN 256
#define KNET_MAX_PORT_LEN 6
/*
* Some notifications can be generated either on TX or RX
*/
#define KNET_NOTIFY_TX 0
#define KNET_NOTIFY_RX 1
/*
* Link flags
*/
/*
* Where possible, set traffic priority to high.
* On Linux this sets the TOS to INTERACTIVE (6),
* see tc-prio(8) for more infomation
*/
#define KNET_LINK_FLAG_TRAFFICHIPRIO (1ULL << 0)
/*
* Handle flags
*/
/*
* Use privileged operations during socket setup.
*/
#define KNET_HANDLE_FLAG_PRIVILEGED (1ULL << 0)
+/*
+ * threads timer resolution (see knet_handle_set_threads_timer_res below)
+ */
+
+#define KNET_THREADS_TIMER_RES 200000
+
typedef struct knet_handle *knet_handle_t;
/*
* Handle structs/API calls
*/
/**
* knet_handle_new
*
* @brief create a new instance of a knet handle
*
* host_id - Each host in a knet is identified with a unique
* ID. when creating a new handle local host_id
* must be specified (0 to UINT16_MAX are all valid).
* It is the user's responsibility to check that the value
* is unique, or bad things might happen.
*
* log_fd - Write file descriptor. If set to a value > 0, it will be used
* to write log packets from libknet to the application.
* Setting to 0 will disable logging from libknet.
* It is possible to enable logging at any given time (see logging API).
* Make sure to either read from this filedescriptor properly and/or
* mark it O_NONBLOCK, otherwise if the fd becomes full, libknet could
* block.
* It is strongly encouraged to use pipes (ex: pipe(2) or pipe2(2)) for
* logging fds due to the atomic nature of writes between fds.
* See also libknet test suite for reference and guidance.
*
* default_log_level -
* If logfd is specified, it will initialize all subsystems to log
* at default_log_level value. (see logging API)
*
* flags - bitwise OR of some of the following flags:
* KNET_HANDLE_FLAG_PRIVILEGED: use privileged operations setting up the
* communication sockets. If disabled, failure to acquire large
* enough socket buffers is ignored but logged. Inadequate buffers
* lead to poor performance.
*
* @return
* on success, a new knet_handle_t is returned.
* on failure, NULL is returned and errno is set.
* knet-specific errno values:
* ENAMETOOLONG - socket buffers couldn't be set big enough and KNET_HANDLE_FLAG_PRIVILEGED was specified
* ERANGE - buffer size readback returned unexpected type
*/
knet_handle_t knet_handle_new(knet_node_id_t host_id,
int log_fd,
uint8_t default_log_level,
uint64_t flags);
/**
* knet_handle_free
* @brief Destroy a knet handle, free all resources
*
* knet_h - pointer to knet_handle_t
*
* @return
* knet_handle_free returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_handle_free(knet_handle_t knet_h);
+/**
+ * knet_handle_set_threads_timer_res
+ * @brief Change internal thread timer resolution
+ *
+ * knet_h - pointer to knet_handle_t
+ *
+ * timeres - some threads inside knet will use usleep(timeres)
+ * to check if any activity has to be performed, or wait
+ * for the next cycle. 'timeres' (expressed in nano seconds)
+ * defines this interval, with a default of KNET_THREADS_TIMER_RES
+ * (200000).
+ * The lower this value is, the more often knet will perform
+ * those checks and allows a more (time) precise execution of
+ * some operations (for example ping/pong), at the cost of higher
+ * CPU usage.
+ * Accepted values:
+ * 0 - reset timer res to default
+ * 1 - 999 invalid (as it would cause 100% CPU spinning on some
+ * epoll operations)
+ * 1000 or higher - valid
+ *
+ * Unless you know exactly what you are doing, stay away from
+ * changing the default or seek written and notarized approval
+ * from the knet developer team.
+ *
+ * @return
+ * knet_handle_set_threads_timer_res returns
+ * 0 on success
+ * -1 on error and errno is set.
+ */
+
+int knet_handle_set_threads_timer_res(knet_handle_t knet_h,
+ useconds_t timeres);
+
+/**
+ * knet_handle_get_threads_timer_res
+ * @brief Get internal thread timer resolutions
+ *
+ * knet_h - pointer to knet_handle_t
+ *
+ * timeres - current timer res value
+ *
+ * @return
+ * knet_handle_set_threads_timer_res returns
+ * 0 on success and timerres will contain the current value
+ * -1 on error and errno is set.
+ */
+
+int knet_handle_get_threads_timer_res(knet_handle_t knet_h,
+ useconds_t *timeres);
+
/**
* knet_handle_enable_sock_notify
* @brief Register a callback to receive socket events
*
* knet_h - pointer to knet_handle_t
*
* sock_notify_fn_private_data
* void pointer to data that can be used to identify
* the callback.
*
* sock_notify_fn
* A callback function that is invoked every time
* a socket in the datafd pool will report an error (-1)
* or an end of read (0) (see socket.7).
* This function MUST NEVER block or add substantial delays.
* The callback is invoked in an internal unlocked area
* to allow calls to knet_handle_add_datafd/knet_handle_remove_datafd
* to swap/replace the bad fd.
* if both err and errno are 0, it means that the socket
* has received a 0 byte packet (EOF?).
* The callback function must either remove the fd from knet
* (by calling knet_handle_remove_fd()) or dup a new fd in its place.
* Failure to do this can cause problems.
*
* @return
* knet_handle_enable_sock_notify returns
* 0 on success
* -1 on error and errno is set.
*/
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)); /* sorry! can't call it errno ;) */
#define KNET_DATAFD_MAX 32
/**
* knet_handle_add_datafd
*
* @brief Install a file descriptor for communication
*
* IMPORTANT: In order to add datafd to knet, knet_handle_enable_sock_notify
* _MUST_ be set and be able to handle both errors (-1) and
* 0 bytes read / write from the provided datafd.
* On read error (< 0) from datafd, the socket is automatically
* removed from polling to avoid spinning on dead sockets.
* It is safe to call knet_handle_remove_datafd even on sockets
* that have been removed.
*
* knet_h - pointer to knet_handle_t
*
* *datafd - read/write file descriptor.
* knet will read data here to send to the other hosts
* and will write data received from the network.
* Each data packet can be of max size KNET_MAX_PACKET_SIZE!
* Applications using knet_send/knet_recv will receive a
* proper error if the packet size is not within boundaries.
* Applications using their own functions to write to the
* datafd should NOT write more than KNET_MAX_PACKET_SIZE.
*
* Please refer to handle.c on how to set up a socketpair.
*
* datafd can be 0, and knet_handle_add_datafd will create a properly
* populated socket pair the same way as ping_test, or a value
* higher than 0. A negative number will return an error.
* On exit knet_handle_free will take care to cleanup the
* socketpair only if they have been created by knet_handle_add_datafd.
*
* It is possible to pass either sockets or normal fds.
* User provided datafd will be marked as non-blocking and close-on-exec.
*
* *channel - This value is analogous to the tag in VLAN tagging.
* A negative value will auto-allocate a channel.
* Setting a value between 0 and 31 will try to allocate that
* specific channel (unless already in use).
*
* It is possible to add up to 32 datafds but be aware that each
* one of them must have a receiving end on the other host.
*
* Example:
* hostA channel 0 will be delivered to datafd on hostB channel 0
* hostA channel 1 to hostB channel 1.
*
* Each channel must have a unique file descriptor.
*
* If your application could have 2 channels on one host and one
* channel on another host, then you can use dst_host_filter
* to manipulate channel values on TX and RX.
*
* @return
* knet_handle_add_datafd returns
* @retval 0 on success,
* *datafd will be populated with a socket if the original value was 0
* or if a specific fd was set, the value is untouched.
* *channel will be populated with a channel number if the original value
* was negative or the value is untouched if a specific channel
* was requested.
*
* @retval -1 on error and errno is set.
* *datafd and *channel are untouched or empty.
*/
int knet_handle_add_datafd(knet_handle_t knet_h, int *datafd, int8_t *channel);
/**
* knet_handle_remove_datafd
* @brief Remove a file descriptor from knet
*
* knet_h - pointer to knet_handle_t
*
* datafd - file descriptor to remove.
* NOTE that if the socket/fd was created by knet_handle_add_datafd,
* the socket will be closed by libknet.
*
* @return
* knet_handle_remove_datafd returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_handle_remove_datafd(knet_handle_t knet_h, int datafd);
/**
* knet_handle_get_channel
* @brief Get the channel associated with a file descriptor
*
* knet_h - pointer to knet_handle_t
*
* datafd - get the channel associated to this datafd
*
* *channel - will contain the result
*
* @return
* knet_handle_get_channel returns
* @retval 0 on success
* and *channel will contain the result
* @retval -1 on error and errno is set.
* and *channel content is meaningless
*/
int knet_handle_get_channel(knet_handle_t knet_h, const int datafd, int8_t *channel);
/**
* knet_handle_get_datafd
* @brief Get the file descriptor associated with a channel
*
* knet_h - pointer to knet_handle_t
*
* channel - get the datafd associated to this channel
*
* *datafd - will contain the result
*
* @return
* knet_handle_get_datafd returns
* @retval 0 on success
* and *datafd will contain the results
* @retval -1 on error and errno is set.
* and *datafd content is meaningless
*/
int knet_handle_get_datafd(knet_handle_t knet_h, const int8_t channel, int *datafd);
/**
* knet_recv
* @brief Receive data from knet nodes
*
* knet_h - pointer to knet_handle_t
*
* buff - pointer to buffer to store the received data
*
* buff_len - buffer length
*
* channel - channel number
*
* @return
* knet_recv is a commodity function to wrap iovec operations
* around a socket. It returns a call to readv(2).
*/
ssize_t knet_recv(knet_handle_t knet_h,
char *buff,
const size_t buff_len,
const int8_t channel);
/**
* knet_send
* @brief Send data to knet nodes
*
* knet_h - pointer to knet_handle_t
*
* buff - pointer to the buffer of data to send
*
* buff_len - length of data to send
*
* channel - channel number
*
* @return
* knet_send is a commodity function to wrap iovec operations
* around a socket. It returns a call to writev(2).
*/
ssize_t knet_send(knet_handle_t knet_h,
const char *buff,
const size_t buff_len,
const int8_t channel);
/**
* knet_send_sync
*
* @brief Synchronously send data to knet nodes
*
* knet_h - pointer to knet_handle_t
*
* buff - pointer to the buffer of data to send
*
* buff_len - length of data to send
*
* channel - data channel to use (see knet_handle_add_datafd(3))
*
* All knet RX/TX operations are async for performance reasons.
* There are applications that might need a sync version of data
* transmission and receive errors in case of failure to deliver
* to another host.
* knet_send_sync bypasses the whole TX async layer and delivers
* data directly to the link layer, and returns errors accordingly.
* knet_send_sync sends only one packet to one host at a time.
* It does NOT support multiple destinations or multicast packets.
* Decision is still based on dst_host_filter_fn.
*
* @return
* knet_send_sync returns 0 on success and -1 on error.
* In addition to normal sendmmsg errors, knet_send_sync can fail
* due to:
*
* @retval ECANCELED - data forward is disabled
* @retval EFAULT - dst_host_filter fatal error
* @retval EINVAL - dst_host_filter did not provide dst_host_ids_entries on unicast pckts
* @retval E2BIG - dst_host_filter did return more than one dst_host_ids_entries on unicast pckts
* @retval ENOMSG - received unknown message type
* @retval EHOSTDOWN - unicast pckt cannot be delivered because dest host is not connected yet
* @retval ECHILD - crypto failed
* @retval EAGAIN - sendmmsg was unable to send all messages and there was no progress during retry
*/
int knet_send_sync(knet_handle_t knet_h,
const char *buff,
const size_t buff_len,
const int8_t channel);
/**
* knet_handle_enable_filter
*
* @brief install a filter to route packets
*
* knet_h - pointer to knet_handle_t
*
* dst_host_filter_fn_private_data
* void pointer to data that can be used to identify
* the callback.
*
* dst_host_filter_fn -
* is a callback function that is invoked every time
* a packet hits datafd (see knet_handle_new(3)).
* the function allows users to tell libknet where the
* packet has to be delivered.
*
* const unsigned char *outdata - is a pointer to the
* current packet
* ssize_t outdata_len - length of the above data
* uint8_t tx_rx - filter is called on tx or rx
* (KNET_NOTIFY_TX, KNET_NOTIFY_RX)
* knet_node_id_t this_host_id - host_id processing the packet
* knet_node_id_t src_host_id - host_id that generated the
* packet
* knet_node_id_t *dst_host_ids - array of KNET_MAX_HOST knet_node_id_t
* where to store the destinations
* size_t *dst_host_ids_entries - number of hosts to send the message
*
* dst_host_filter_fn should return
* -1 on error, packet is discarded.
* 0 packet is unicast and should be sent to dst_host_ids and there are
* dst_host_ids_entries in the buffer.
* 1 packet is broadcast/multicast and is sent all hosts.
* contents of dst_host_ids and dst_host_ids_entries are ignored.
* (see also kronosnetd/etherfilter.* for an example that filters based
* on ether protocol)
*
* @return
* knet_handle_enable_filter returns
* 0 on success
* -1 on error and errno is set.
*/
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,
knet_node_id_t this_host_id,
knet_node_id_t src_host_id,
int8_t *channel,
knet_node_id_t *dst_host_ids,
size_t *dst_host_ids_entries));
/**
* knet_handle_setfwd
*
* @brief Start packet forwarding
*
* knet_h - pointer to knet_handle_t
*
* enable - set to 1 to allow data forwarding, 0 to disable data forwarding.
*
* @return
* knet_handle_setfwd returns
* 0 on success
* -1 on error and errno is set.
*
* By default data forwarding is off and no traffic will pass through knet until
* it is set on.
*/
int knet_handle_setfwd(knet_handle_t knet_h, unsigned int enabled);
#define KNET_PMTUD_DEFAULT_INTERVAL 60
/**
* knet_handle_pmtud_setfreq
*
* @brief Set the interval between PMTUd scans
*
* knet_h - pointer to knet_handle_t
*
* interval - define the interval in seconds between PMTUd scans
* range from 1 to 86400 (24h)
*
* @return
* knet_handle_pmtud_setfreq returns
* 0 on success
* -1 on error and errno is set.
*
* default interval is 60.
*/
int knet_handle_pmtud_setfreq(knet_handle_t knet_h, unsigned int interval);
/**
* knet_handle_pmtud_getfreq
*
* @brief Get the interval between PMTUd scans
*
* knet_h - pointer to knet_handle_t
*
* interval - pointer where to store the current interval value
*
* @return
* knet_handle_pmtud_setfreq returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_handle_pmtud_getfreq(knet_handle_t knet_h, unsigned int *interval);
/**
* knet_handle_enable_pmtud_notify
*
* @brief install a callback to receive PMTUd changes
*
* knet_h - pointer to knet_handle_t
*
* pmtud_notify_fn_private_data
* void pointer to data that can be used to identify
* the callback.
*
* pmtud_notify_fn
* is a callback function that is invoked every time
* a path MTU size change is detected.
* The function allows libknet to notify the user
* of data MTU, that's the max value that can be send
* onwire without fragmentation. The data MTU will always
* be lower than real link MTU because it accounts for
* protocol overhead, knet packet header and (if configured)
* crypto overhead,
* This function MUST NEVER block or add substantial delays.
*
* @return
* knet_handle_enable_pmtud_notify returns
* 0 on success
* -1 on error and errno is set.
*/
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));
/**
* knet_handle_pmtud_get
*
* @brief Get the current data MTU
*
* knet_h - pointer to knet_handle_t
*
* data_mtu - pointer where to store data_mtu
*
* @return
* knet_handle_pmtud_get returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_handle_pmtud_get(knet_handle_t knet_h,
unsigned int *data_mtu);
#define KNET_MIN_KEY_LEN 256
#define KNET_MAX_KEY_LEN 4096
struct knet_handle_crypto_cfg {
char crypto_model[16];
char crypto_cipher_type[16];
char crypto_hash_type[16];
unsigned char private_key[KNET_MAX_KEY_LEN];
unsigned int private_key_len;
};
/**
* knet_handle_crypto
*
* @brief set up packet cryptographic signing & encryption
*
* knet_h - pointer to knet_handle_t
*
* knet_handle_crypto_cfg -
* pointer to a knet_handle_crypto_cfg structure
*
* crypto_model should contain the model name.
* Currently only "openssl" and "nss" are supported.
* Setting to "none" will disable crypto.
*
* crypto_cipher_type
* should contain the cipher algo name.
* It can be set to "none" to disable
* encryption.
* Currently supported by "nss" model:
* "3des", "aes128", "aes192" and "aes256".
* "openssl" model supports more modes and it strictly
* depends on the openssl build. See: EVP_get_cipherbyname
* openssl API call for details.
*
* crypto_hash_type
* should contain the hashing algo name.
* It can be set to "none" to disable
* hashing.
* Currently supported by "nss" model:
* "md5", "sha1", "sha256", "sha384" and "sha512".
* "openssl" model supports more modes and it strictly
* depends on the openssl build. See: EVP_get_digestbyname
* openssl API call for details.
*
* private_key will contain the private shared key.
* It has to be at least KNET_MIN_KEY_LEN long.
*
* private_key_len
* length of the provided private_key.
*
* Implementation notes/current limitations:
* - enabling crypto, will increase latency as packets have
* to processed.
* - enabling crypto might reduce the overall throughtput
* due to crypto data overhead.
* - re-keying is not implemented yet.
* - private/public key encryption/hashing is not currently
* planned.
* - crypto key must be the same for all hosts in the same
* knet instance.
* - it is safe to call knet_handle_crypto multiple times at runtime.
* The last config will be used.
* IMPORTANT: a call to knet_handle_crypto can fail due to:
* 1) failure to obtain locking
* 2) errors to initializing the crypto level.
* This can happen even in subsequent calls to knet_handle_crypto.
* A failure in crypto init, might leave your traffic unencrypted!
* It's best to stop data forwarding (see knet_handle_setfwd(3)), change crypto config,
* start forward again.
*
* @return
* knet_handle_crypto returns:
* @retval 0 on success
* @retval -1 on error and errno is set.
* @retval -2 on crypto subsystem initialization error. No errno is provided at the moment (yet).
*/
int knet_handle_crypto(knet_handle_t knet_h,
struct knet_handle_crypto_cfg *knet_handle_crypto_cfg);
#define KNET_COMPRESS_THRESHOLD 100
struct knet_handle_compress_cfg {
char compress_model[16];
uint32_t compress_threshold;
int compress_level;
};
/**
* knet_handle_compress
*
* @brief Set up packet compression
*
* knet_h - pointer to knet_handle_t
*
* knet_handle_compress_cfg -
* pointer to a knet_handle_compress_cfg structure
*
* compress_model contains the model name.
* See "compress_level" for the list of accepted values.
* Setting the value to "none" disables compression.
*
* compress_threshold
* tells the transmission thread to NOT compress
* any packets that are smaller than the value
* indicated. Default 100 bytes.
* Set to 0 to reset to the default.
* Set to 1 to compress everything.
* Max accepted value is KNET_MAX_PACKET_SIZE.
*
* compress_level is the "level" parameter for most models:
* zlib: 0 (no compression), 1 (minimal) .. 9 (max compression).
* lz4: 1 (max compression)... 9 (fastest compression).
* lz4hc: 1 (min compression) ... LZ4HC_MAX_CLEVEL (16) or LZ4HC_CLEVEL_MAX (12)
* depending on the version of lz4hc libknet was built with.
* lzma: 0 (minimal) .. 9 (max compression)
* bzip2: 1 (minimal) .. 9 (max compression)
* For lzo2 it selects the algorithm to use:
* 1 : lzo1x_1_compress (default)
* 11 : lzo1x_1_11_compress
* 12 : lzo1x_1_12_compress
* 15 : lzo1x_1_15_compress
* 999: lzo1x_999_compress
* Other values select the default algorithm.
* Please refer to the documentation of the respective
* compression library for guidance about setting this
* value.
*
* Implementation notes:
* - it is possible to enable/disable compression at any time.
* - nodes can be using a different compression algorithm at any time.
* - knet does NOT implement the compression algorithm directly. it relies
* on external libraries for this functionality. Please read
* the libraries man pages to figure out which algorithm/compression
* level is best for the data you are planning to transmit.
*
* @return
* knet_handle_compress returns
* 0 on success
* -1 on error and errno is set. EINVAL means that either the model or the
* level are not supported.
*/
int knet_handle_compress(knet_handle_t knet_h,
struct knet_handle_compress_cfg *knet_handle_compress_cfg);
struct knet_handle_stats {
size_t size;
uint64_t tx_uncompressed_packets;
uint64_t tx_compressed_packets;
uint64_t tx_compressed_original_bytes;
uint64_t tx_compressed_size_bytes;
uint64_t tx_compress_time_ave;
uint64_t tx_compress_time_min;
uint64_t tx_compress_time_max;
uint64_t tx_failed_to_compress;
uint64_t tx_unable_to_compress;
uint64_t rx_compressed_packets;
uint64_t rx_compressed_original_bytes;
uint64_t rx_compressed_size_bytes;
uint64_t rx_compress_time_ave;
uint64_t rx_compress_time_min;
uint64_t rx_compress_time_max;
uint64_t rx_failed_to_decompress;
/* Overhead times, measured in usecs */
uint64_t tx_crypt_packets;
uint64_t tx_crypt_byte_overhead;
uint64_t tx_crypt_time_ave;
uint64_t tx_crypt_time_min;
uint64_t tx_crypt_time_max;
uint64_t rx_crypt_packets;
uint64_t rx_crypt_time_ave;
uint64_t rx_crypt_time_min;
uint64_t rx_crypt_time_max;
};
/**
* knet_handle_get_stats
*
* @brief Get statistics for compression & crypto
*
* knet_h - pointer to knet_handle_t
*
* knet_handle_stats
* pointer to a knet_handle_stats structure
*
* struct_size
* size of knet_handle_stats structure to allow
* for backwards compatibility. libknet will only
* copy this much data into the stats structure
* so that older callers will not get overflowed if
* new fields are added.
*
* @return
* 0 on success
* -1 on error and errno is set.
*
*/
int knet_handle_get_stats(knet_handle_t knet_h, struct knet_handle_stats *stats, size_t struct_size);
/*
* Tell knet_handle_clear_stats whether to clear just the handle stats
* or all of them.
*/
#define KNET_CLEARSTATS_HANDLE_ONLY 1
#define KNET_CLEARSTATS_HANDLE_AND_LINK 2
/**
* knet_handle_clear_stats
*
* @brief Clear knet stats, link and/or handle
*
* knet_h - pointer to knet_handle_t
*
* clear_option - Which stats to clear, must be one of
*
* KNET_CLEARSTATS_HANDLE_ONLY or
* KNET_CLEARSTATS_HANDLE_AND_LINK
*
* @return
* 0 on success
* -1 on error and errno is set.
*
*/
int knet_handle_clear_stats(knet_handle_t knet_h, int clear_option);
struct knet_crypto_info {
const char *name; /* openssl,nss,etc.. */
uint8_t properties; /* currently unused */
char pad[256]; /* currently unused */
};
/**
* knet_get_crypto_list
*
* @brief Get a list of supported crypto libraries
*
* crypto_list - array of struct knet_crypto_info *
* If NULL then only the number of structs is returned in crypto_list_entries
* to allow the caller to allocate sufficient space.
* libknet does not allow more than 256 crypto methods at the moment.
* it is safe to allocate 256 structs to avoid calling
* knet_get_crypto_list twice.
*
* crypto_list_entries - returns the number of structs in crypto_list
*
* @return
* knet_get_crypto_list returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_get_crypto_list(struct knet_crypto_info *crypto_list,
size_t *crypto_list_entries);
struct knet_compress_info {
const char *name; /* bzip2, lz4, etc.. */
uint8_t properties; /* currently unused */
char pad[256]; /* currently unused */
};
/**
* knet_get_compress_list
*
* @brief Get a list of support compression types
*
* compress_list - array of struct knet_compress_info *
* If NULL then only the number of structs is returned in compress_list_entries
* to allow the caller to allocate sufficient space.
* libknet does not allow more than 256 compress methods at the moment.
* it is safe to allocate 256 structs to avoid calling
* knet_get_compress_list twice.
*
* compress_list_entries - returns the number of structs in compress_list
*
* @return
* knet_get_compress_list returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_get_compress_list(struct knet_compress_info *compress_list,
size_t *compress_list_entries);
/*
* host structs/API calls
*/
/**
* knet_host_add
*
* @brief Add a new host ID to knet
*
* knet_h - pointer to knet_handle_t
*
* host_id - each host in a knet is identified with a unique ID
* (see also knet_handle_new(3))
*
* @return
* knet_host_add returns:
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_add(knet_handle_t knet_h, knet_node_id_t host_id);
/**
* knet_host_remove
*
* @brief Remove a host ID from knet
*
* knet_h - pointer to knet_handle_t
*
* host_id - each host in a knet is identified with a unique ID
* (see also knet_handle_new(3))
*
* @return
* knet_host_remove returns:
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_remove(knet_handle_t knet_h, knet_node_id_t host_id);
/**
* knet_host_set_name
*
* @brief Set the name of a knet host
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* name - this name will be used for pretty logging and eventually
* search for hosts (see also knet_handle_host_get_name(2) and knet_handle_host_get_id(3)).
* Only up to KNET_MAX_HOST_LEN - 1 bytes will be accepted and
* name has to be unique for each host.
*
* @return
* knet_host_set_name returns:
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_set_name(knet_handle_t knet_h, knet_node_id_t host_id,
const char *name);
/**
* knet_host_get_name_by_host_id
*
* @brief Get the name of a host given its ID
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* name - pointer to a preallocated buffer of at least size KNET_MAX_HOST_LEN
* where the current host name will be stored
* (as set by knet_host_set_name or default by knet_host_add)
*
* @return
* knet_host_get_name_by_host_id returns:
* 0 on success
* -1 on error and errno is set (name is left untouched)
*/
int knet_host_get_name_by_host_id(knet_handle_t knet_h, knet_node_id_t host_id,
char *name);
/**
* knet_host_get_id_by_host_name
*
* @brief Get the ID of a host given its name
*
* knet_h - pointer to knet_handle_t
*
* name - name to lookup, max len KNET_MAX_HOST_LEN
*
* host_id - where to store the result
*
* @return
* knet_host_get_id_by_host_name returns:
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_get_id_by_host_name(knet_handle_t knet_h, const char *name,
knet_node_id_t *host_id);
/**
* knet_host_get_host_list
*
* @brief Get a list of hosts known to knet
*
* knet_h - pointer to knet_handle_t
*
* host_ids - array of at lest KNET_MAX_HOST size
*
* host_ids_entries -
* number of entries writted in host_ids
*
* @return
* knet_host_get_host_list returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_get_host_list(knet_handle_t knet_h,
knet_node_id_t *host_ids, size_t *host_ids_entries);
/*
* define switching policies
*/
#define KNET_LINK_POLICY_PASSIVE 0
#define KNET_LINK_POLICY_ACTIVE 1
#define KNET_LINK_POLICY_RR 2
/**
* knet_host_set_policy
*
* knet_h - pointer to knet_handle_t
*
* @brief Set the switching policy for a host's links
*
* host_id - see knet_host_add(3)
*
* policy - there are currently 3 kind of simple switching policies
* based on link configuration.
* KNET_LINK_POLICY_PASSIVE - the active link with the lowest
* priority will be used.
* if one or more active links share
* the same priority, the one with
* lowest link_id will be used.
*
* KNET_LINK_POLICY_ACTIVE - all active links will be used
* simultaneously to send traffic.
* link priority is ignored.
*
* KNET_LINK_POLICY_RR - round-robin policy, every packet
* will be send on a different active
* link.
*
* @return
* knet_host_set_policy returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_set_policy(knet_handle_t knet_h, knet_node_id_t host_id,
uint8_t policy);
/**
* knet_host_get_policy
*
* @brief Get the switching policy for a host's links
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* policy - will contain the current configured switching policy.
* Default is passive when creating a new host.
*
* @return
* knet_host_get_policy returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_get_policy(knet_handle_t knet_h, knet_node_id_t host_id,
uint8_t *policy);
/**
* knet_host_enable_status_change_notify
*
* @brief Install a callback to get host status change events
*
* knet_h - pointer to knet_handle_t
*
* host_status_change_notify_fn_private_data -
* void pointer to data that can be used to identify
* the callback
*
* host_status_change_notify_fn -
* is a callback function that is invoked every time
* there is a change in the host status.
* host status is identified by:
* - reachable, this host can send/receive data to/from host_id
* - remote, 0 if the host_id is connected locally or 1 if
* the there is one or more knet host(s) in between.
* NOTE: re-switching is NOT currently implemented,
* but this is ready for future and can avoid
* an API/ABI breakage later on.
* - external, 0 if the host_id is configured locally or 1 if
* it has been added from remote nodes config.
* NOTE: dynamic topology is NOT currently implemented,
* but this is ready for future and can avoid
* an API/ABI breakage later on.
* This function MUST NEVER block or add substantial delays.
*
* @return
* knet_host_status_change_notify returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_enable_status_change_notify(knet_handle_t knet_h,
void *host_status_change_notify_fn_private_data,
void (*host_status_change_notify_fn) (
void *private_data,
knet_node_id_t host_id,
uint8_t reachable,
uint8_t remote,
uint8_t external));
/*
* define host status structure for quick lookup
* struct is in flux as more stats will be added soon
*
* reachable host_id can be seen either directly connected
* or via another host_id
*
* remote 0 = node is connected locally, 1 is visible via
* via another host_id
*
* external 0 = node is configured/known locally,
* 1 host_id has been received via another host_id
*/
struct knet_host_status {
uint8_t reachable;
uint8_t remote;
uint8_t external;
/* add host statistics */
};
/**
* knet_host_status_get
*
* @brief Get the status of a host
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* status - pointer to knet_host_status struct
*
* @return
* knet_handle_pmtud_get returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_host_get_status(knet_handle_t knet_h, knet_node_id_t host_id,
struct knet_host_status *status);
/*
* link structs/API calls
*
* every host allocated/managed by knet_host_* has
* KNET_MAX_LINK structures to define the network
* paths that connect 2 hosts.
*
* Each link is identified by a link_id that has a
* values between 0 and KNET_MAX_LINK - 1.
*
* KNOWN LIMITATIONS:
*
* - let's assume the scenario where two hosts are connected
* with any number of links. link_id must match on both sides.
* If host_id 0 link_id 0 is configured to connect IP1 to IP2 and
* host_id 0 link_id 1 is configured to connect IP3 to IP4,
* host_id 1 link_id 0 _must_ connect IP2 to IP1 and likewise
* host_id 1 link_id 1 _must_ connect IP4 to IP3.
* We might be able to lift this restriction in future, by using
* other data to determine src/dst link_id, but for now, deal with it.
*/
/*
* commodity functions to convert strings to sockaddr and viceversa
*/
/**
* knet_strtoaddr
*
* @brief Convert a hostname string to an address
*
* host - IPaddr/hostname to convert
* be aware only the first IP address will be returned
* in case a hostname resolves to multiple IP
*
* port - port to connect to
*
* ss - sockaddr_storage where to store the converted data
*
* sslen - len of the sockaddr_storage
*
* @return
* knet_strtoaddr returns same error codes as getaddrinfo
*
*/
int knet_strtoaddr(const char *host, const char *port,
struct sockaddr_storage *ss, socklen_t sslen);
/**
* knet_addrtostr
*
* @brief Convert an address to a host name
*
* ss - sockaddr_storage to convert
*
* sslen - len of the sockaddr_storage
*
* host - IPaddr/hostname where to store data
* (recommended size: KNET_MAX_HOST_LEN)
*
* port - port buffer where to store data
* (recommended size: KNET_MAX_PORT_LEN)
*
* @return
* knet_strtoaddr returns same error codes as getnameinfo
*/
int knet_addrtostr(const struct sockaddr_storage *ss, socklen_t sslen,
char *addr_buf, size_t addr_buf_size,
char *port_buf, size_t port_buf_size);
#define KNET_TRANSPORT_LOOPBACK 0
#define KNET_TRANSPORT_UDP 1
#define KNET_TRANSPORT_SCTP 2
#define KNET_MAX_TRANSPORTS UINT8_MAX
/*
* The Loopback transport is only valid for connections to localhost, the host
* with the same node_id specified in knet_handle_new(). Only one link of this
* type is allowed. Data sent down a LOOPBACK link will be copied directly from
* the knet send datafd to the knet receive datafd so the application must be set
* up to take data from that socket at least as often as it is sent or deadlocks
* could occur. If used, a LOOPBACK link must be the only link configured to the
* local host.
*/
struct knet_transport_info {
const char *name; /* UDP/SCTP/etc... */
uint8_t id; /* value that can be used for link_set_config */
uint8_t properties; /* currently unused */
char pad[256]; /* currently unused */
};
/**
* knet_get_transport_list
*
* @brief Get a list of the transports support by this build of knet
*
* transport_list - an array of struct transport_info that must be
* at least of size struct transport_info * KNET_MAX_TRANSPORTS
*
* transport_list_entries - pointer to a size_t where to store how many transports
* are available in this build of libknet.
*
* @return
* knet_get_transport_list returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_get_transport_list(struct knet_transport_info *transport_list,
size_t *transport_list_entries);
/**
* knet_get_transport_name_by_id
*
* @brief Get a transport name from its ID number
*
* transport - one of the KNET_TRANSPORT_xxx constants
*
* @return
* knet_get_transport_name_by_id returns:
*
* @retval pointer to the name on success or
* @retval NULL on error and errno is set.
*/
const char *knet_get_transport_name_by_id(uint8_t transport);
/**
* knet_get_transport_id_by_name
*
* @brief Get a transport ID from its name
*
* name - transport name (UDP/SCTP/etc)
*
* @return
* knet_get_transport_name_by_id returns:
*
* @retval KNET_MAX_TRANSPORTS on error and errno is set accordingly
* @retval KNET_TRANSPORT_xxx on success.
*/
uint8_t knet_get_transport_id_by_name(const char *name);
#define KNET_TRANSPORT_DEFAULT_RECONNECT_INTERVAL 1000
/**
* knet_handle_set_transport_reconnect_interval
*
* @brief Set the interval between transport attempts to reconnect a failed link
*
* knet_h - pointer to knet_handle_t
*
* msecs - milliseconds
*
* @return
* knet_handle_set_transport_reconnect_interval returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_handle_set_transport_reconnect_interval(knet_handle_t knet_h, uint32_t msecs);
/**
* knet_handle_get_transport_reconnect_interval
*
* @brief Get the interval between transport attempts to reconnect a failed link
*
* knet_h - pointer to knet_handle_t
*
* msecs - milliseconds
*
* @return
* knet_handle_get_transport_reconnect_interval returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_handle_get_transport_reconnect_interval(knet_handle_t knet_h, uint32_t *msecs);
/**
* knet_link_set_config
*
* @brief Configure the link to a host
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* transport - one of the KNET_TRANSPORT_xxx constants
*
* src_addr - sockaddr_storage that can be either IPv4 or IPv6
*
* dst_addr - sockaddr_storage that can be either IPv4 or IPv6
* this can be null if we don't know the incoming
* IP address/port and the link will remain quiet
* till the node on the other end will initiate a
* connection
*
* flags - KNET_LINK_FLAG_*
*
* @return
* knet_link_set_config returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_set_config(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
uint8_t transport,
struct sockaddr_storage *src_addr,
struct sockaddr_storage *dst_addr,
uint64_t flags);
/**
* knet_link_get_config
*
* @brief Get the link configutation information
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* transport - see knet_link_set_config(3)
*
* src_addr - sockaddr_storage that can be either IPv4 or IPv6
*
* dst_addr - sockaddr_storage that can be either IPv4 or IPv6
*
* dynamic - 0 if dst_addr is static or 1 if dst_addr is dynamic.
* In case of 1, dst_addr can be NULL and it will be left
* untouched.
*
* flags - KNET_LINK_FLAG_*
*
* @return
* knet_link_get_config returns
* 0 on success.
* -1 on error and errno is set.
*/
int knet_link_get_config(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
uint8_t *transport,
struct sockaddr_storage *src_addr,
struct sockaddr_storage *dst_addr,
uint8_t *dynamic,
uint64_t *flags);
/**
* knet_link_clear_config
*
* @brief Clear link information and disconnect the link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* @return
* knet_link_clear_config returns
* 0 on success.
* -1 on error and errno is set.
*/
int knet_link_clear_config(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id);
/**
* knet_link_set_enable
*
* @brief Enable traffic on a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* enabled - 0 disable the link, 1 enable the link
*
* @return
* knet_link_set_enable returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_set_enable(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
unsigned int enabled);
/**
* knet_link_get_enable
*
* @brief Find out whether a link is enabled or not
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* enabled - 0 disable the link, 1 enable the link
*
* @return
* knet_link_get_enable returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_get_enable(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
unsigned int *enabled);
#define KNET_LINK_DEFAULT_PING_INTERVAL 1000 /* 1 second */
#define KNET_LINK_DEFAULT_PING_TIMEOUT 2000 /* 2 seconds */
#define KNET_LINK_DEFAULT_PING_PRECISION 2048 /* samples */
/**
* knet_link_set_ping_timers
*
* @brief Set the ping timers for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* interval - specify the ping interval in milliseconds.
*
* timeout - if no pong is received within this time,
* the link is declared dead, in milliseconds.
* NOTE: in future it will be possible to set timeout to 0
* for an autocalculated timeout based on interval, pong_count
* and latency. The API already accept 0 as value and it will
* return ENOSYS / -1. Once the automatic calculation feature
* will be implemented, this call will only return EINVAL
* for incorrect values.
*
* precision - how many values of latency are used to calculate
* the average link latency (see also knet_link_get_status(3))
*
* @return
* knet_link_set_ping_timers returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_set_ping_timers(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
time_t interval, time_t timeout, unsigned int precision);
/**
* knet_link_get_ping_timers
*
* @brief Get the ping timers for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* interval - ping interval
*
* timeout - if no pong is received within this time,
* the link is declared dead
*
* precision - how many values of latency are used to calculate
* the average link latency (see also knet_link_get_status(3))
*
* @return
* knet_link_get_ping_timers returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_get_ping_timers(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
time_t *interval, time_t *timeout, unsigned int *precision);
#define KNET_LINK_DEFAULT_PONG_COUNT 5
/**
* knet_link_set_pong_count
*
* @brief Set the pong count for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* pong_count - how many valid ping/pongs before a link is marked UP.
* default: 5, value should be > 0
*
* @return
* knet_link_set_pong_count returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_set_pong_count(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
uint8_t pong_count);
/**
* knet_link_get_pong_count
*
* @brief Get the pong count for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* pong_count - how many valid ping/pongs before a link is marked UP.
* default: 5, value should be > 0
*
* @return
* knet_link_get_pong_count returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_get_pong_count(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
uint8_t *pong_count);
/**
* knet_link_set_priority
*
* @brief Set the priority for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* priority - specify the switching priority for this link
* see also knet_host_set_policy
*
* @return
* knet_link_set_priority returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_set_priority(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
uint8_t priority);
/**
* knet_link_get_priority
*
* @brief Get the priority for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* priority - gather the switching priority for this link
* see also knet_host_set_policy
*
* @return
* knet_link_get_priority returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_get_priority(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
uint8_t *priority);
/**
* knet_link_get_link_list
*
* @brief Get a list of links connecting a host
*
* knet_h - pointer to knet_handle_t
*
* link_ids - array of at lest KNET_MAX_LINK size
* with the list of configured links for a certain host.
*
* link_ids_entries -
* number of entries contained in link_ids
*
* @return
* knet_link_get_link_list returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_get_link_list(knet_handle_t knet_h, knet_node_id_t host_id,
uint8_t *link_ids, size_t *link_ids_entries);
/*
* define link status structure for quick lookup
*
* src/dst_{ipaddr,port} strings are filled by
* getnameinfo(3) when configuring the link.
* if the link is dynamic (see knet_link_set_config(3))
* dst_ipaddr/port will contain ipaddr/port of the currently
* connected peer or "Unknown" if it was not possible
* to determine the ipaddr/port at runtime.
*
* enabled see also knet_link_set/get_enable.
*
* connected the link is connected to a peer and ping/pong traffic
* is flowing.
*
* dynconnected the link has dynamic ip on the other end, and
* we can see the other host is sending pings to us.
*
* latency average latency of this link
* see also knet_link_set/get_timeout.
*
* pong_last if the link is down, this value tells us how long
* ago this link was active. A value of 0 means that the link
* has never been active.
*
* knet_link_stats structure that contains details statistics for the link
*/
#define MAX_LINK_EVENTS 16
struct knet_link_stats {
/* onwire values */
uint64_t tx_data_packets;
uint64_t rx_data_packets;
uint64_t tx_data_bytes;
uint64_t rx_data_bytes;
uint64_t rx_ping_packets;
uint64_t tx_ping_packets;
uint64_t rx_ping_bytes;
uint64_t tx_ping_bytes;
uint64_t rx_pong_packets;
uint64_t tx_pong_packets;
uint64_t rx_pong_bytes;
uint64_t tx_pong_bytes;
uint64_t rx_pmtu_packets;
uint64_t tx_pmtu_packets;
uint64_t rx_pmtu_bytes;
uint64_t tx_pmtu_bytes;
/* Only filled in when requested */
uint64_t tx_total_packets;
uint64_t rx_total_packets;
uint64_t tx_total_bytes;
uint64_t rx_total_bytes;
uint64_t tx_total_errors;
uint64_t tx_total_retries;
uint32_t tx_pmtu_errors;
uint32_t tx_pmtu_retries;
uint32_t tx_ping_errors;
uint32_t tx_ping_retries;
uint32_t tx_pong_errors;
uint32_t tx_pong_retries;
uint32_t tx_data_errors;
uint32_t tx_data_retries;
/* measured in usecs */
uint32_t latency_min;
uint32_t latency_max;
uint32_t latency_ave;
uint32_t latency_samples;
/* how many times the link has been going up/down */
uint32_t down_count;
uint32_t up_count;
/*
* circular buffer of time_t structs collecting the history
* of up/down events on this link.
* the index indicates current/last event.
* it is safe to walk back the history by decreasing the index
*/
time_t last_up_times[MAX_LINK_EVENTS];
time_t last_down_times[MAX_LINK_EVENTS];
int8_t last_up_time_index;
int8_t last_down_time_index;
/* Always add new stats at the end */
};
struct knet_link_status {
size_t size; /* For ABI checking */
char src_ipaddr[KNET_MAX_HOST_LEN];
char src_port[KNET_MAX_PORT_LEN];
char dst_ipaddr[KNET_MAX_HOST_LEN];
char dst_port[KNET_MAX_PORT_LEN];
uint8_t enabled; /* link is configured and admin enabled for traffic */
uint8_t connected; /* link is connected for data (local view) */
uint8_t dynconnected; /* link has been activated by remote dynip */
unsigned long long latency; /* average latency computed by fix/exp */
struct timespec pong_last;
unsigned int mtu; /* current detected MTU on this link */
unsigned int proto_overhead; /* contains the size of the IP protocol, knet headers and
* crypto headers (if configured). This value is filled in
* ONLY after the first PMTUd run on that given link,
* and can change if link configuration or crypto configuration
* changes at runtime.
* WARNING: in general mtu + proto_overhead might or might
* not match the output of ifconfig mtu due to crypto
* requirements to pad packets to some specific boundaries. */
/* Link statistics */
struct knet_link_stats stats;
};
/**
* knet_link_get_status
*
* @brief Get the status (and statistics) for a link
*
* knet_h - pointer to knet_handle_t
*
* host_id - see knet_host_add(3)
*
* link_id - see knet_link_set_config(3)
*
* status - pointer to knet_link_status struct
*
* struct_size - max size of knet_link_status - allows library to
* add fields without ABI change. Returned structure
* will be truncated to this length and .size member
* indicates the full size.
*
* @return
* knet_link_get_status returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_get_status(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t link_id,
struct knet_link_status *status, size_t struct_size);
/**
* knet_link_enable_status_change_notify
*
* @brief Install a callback to get a link status change events
*
* knet_h - pointer to knet_handle_t
*
* host_status_change_notify_fn_private_data -
* void pointer to data that can be used to identify
* the callback
*
* host_status_change_notify_fn -
* is a callback function that is invoked every time
* there is a change in a link status.
* host status is identified by:
* - connected, 0 if the link has been disconnected, 1 if the link
* is connected.
* - remote, 0 if the host_id is connected locally or 1 if
* the there is one or more knet host(s) in between.
* NOTE: re-switching is NOT currently implemented,
* but this is ready for future and can avoid
* an API/ABI breakage later on.
* - external, 0 if the host_id is configured locally or 1 if
* it has been added from remote nodes config.
* NOTE: dynamic topology is NOT currently implemented,
* but this is ready for future and can avoid
* an API/ABI breakage later on.
* This function MUST NEVER block or add substantial delays.
*
* @return
* knet_host_status_change_notify returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_link_enable_status_change_notify(knet_handle_t knet_h,
void *link_status_change_notify_fn_private_data,
void (*link_status_change_notify_fn) (
void *private_data,
knet_node_id_t host_id,
uint8_t link_id,
uint8_t connected,
uint8_t remote,
uint8_t external));
/*
* logging structs/API calls
*/
/*
* libknet is composed of several subsystems. In order
* to easily distinguish log messages coming from different
* places, each subsystem has its own ID.
*
* 0-19 config/management
* 20-39 internal threads
* 40-59 transports
* 60-69 crypto implementations
*/
#define KNET_SUB_COMMON 0 /* common.c */
#define KNET_SUB_HANDLE 1 /* handle.c alloc/dealloc config changes */
#define KNET_SUB_HOST 2 /* host add/del/modify */
#define KNET_SUB_LISTENER 3 /* listeners add/del/modify... */
#define KNET_SUB_LINK 4 /* link add/del/modify */
#define KNET_SUB_TRANSPORT 5 /* Transport common */
#define KNET_SUB_CRYPTO 6 /* crypto.c config generic layer */
#define KNET_SUB_COMPRESS 7 /* compress.c config generic layer */
#define KNET_SUB_FILTER 19 /* allocated for users to log from dst_filter */
#define KNET_SUB_DSTCACHE 20 /* switching thread (destination cache handling) */
#define KNET_SUB_HEARTBEAT 21 /* heartbeat thread */
#define KNET_SUB_PMTUD 22 /* Path MTU Discovery thread */
#define KNET_SUB_TX 23 /* send to link thread */
#define KNET_SUB_RX 24 /* recv from link thread */
#define KNET_SUB_TRANSP_BASE 40 /* Base log level for transports */
#define KNET_SUB_TRANSP_LOOPBACK (KNET_SUB_TRANSP_BASE + KNET_TRANSPORT_LOOPBACK)
#define KNET_SUB_TRANSP_UDP (KNET_SUB_TRANSP_BASE + KNET_TRANSPORT_UDP)
#define KNET_SUB_TRANSP_SCTP (KNET_SUB_TRANSP_BASE + KNET_TRANSPORT_SCTP)
#define KNET_SUB_NSSCRYPTO 60 /* nsscrypto.c */
#define KNET_SUB_OPENSSLCRYPTO 61 /* opensslcrypto.c */
#define KNET_SUB_ZLIBCOMP 70 /* compress_zlib.c */
#define KNET_SUB_LZ4COMP 71 /* compress_lz4.c */
#define KNET_SUB_LZ4HCCOMP 72 /* compress_lz4.c */
#define KNET_SUB_LZO2COMP 73 /* compress_lzo.c */
#define KNET_SUB_LZMACOMP 74 /* compress_lzma.c */
#define KNET_SUB_BZIP2COMP 75 /* compress_bzip2.c */
#define KNET_SUB_UNKNOWN UINT8_MAX - 1
#define KNET_MAX_SUBSYSTEMS UINT8_MAX
/*
* Convert between subsystem IDs and names
*/
/**
* knet_log_get_subsystem_name
*
* @brief Get a logging system name from its numeric ID
*
* @return
* returns internal name of the subsystem or "common"
*/
const char *knet_log_get_subsystem_name(uint8_t subsystem);
/**
* knet_log_get_subsystem_id
*
* @brief Get a logging system ID from its name
*
* @return
* returns internal ID of the subsystem or KNET_SUB_COMMON
*/
uint8_t knet_log_get_subsystem_id(const char *name);
/*
* 4 log levels are enough for everybody
*/
#define KNET_LOG_ERR 0 /* unrecoverable errors/conditions */
#define KNET_LOG_WARN 1 /* recoverable errors/conditions */
#define KNET_LOG_INFO 2 /* info, link up/down, config changes.. */
#define KNET_LOG_DEBUG 3
/*
* Convert between log level values and names
*/
/**
* knet_log_get_loglevel_name
*
* @brief Get a logging level name from its numeric ID
*
* @return
* returns internal name of the log level or "ERROR" for unknown values
*/
const char *knet_log_get_loglevel_name(uint8_t level);
/**
* knet_log_get_loglevel_id
*
* @brief Get a logging level ID from its name
*
* @return
* returns internal log level ID or KNET_LOG_ERR for invalid names
*/
uint8_t knet_log_get_loglevel_id(const char *name);
/*
* every log message is composed by a text message
* and message level/subsystem IDs.
* In order to make debugging easier it is possible to send those packets
* straight to stdout/stderr (see knet_bench.c stdout option).
*/
#define KNET_MAX_LOG_MSG_SIZE 254
#if KNET_MAX_LOG_MSG_SIZE > PIPE_BUF
#error KNET_MAX_LOG_MSG_SIZE cannot be bigger than PIPE_BUF for guaranteed system atomic writes
#endif
struct knet_log_msg {
char msg[KNET_MAX_LOG_MSG_SIZE];
uint8_t subsystem; /* KNET_SUB_* */
uint8_t msglevel; /* KNET_LOG_* */
knet_handle_t knet_h; /* pointer to the handle generating the log */
};
/**
* knet_log_set_log_level
*
* @brief Set the logging level for a subsystem
*
* knet_h - same as above
*
* subsystem - same as above
*
* level - same as above
*
* knet_log_set_loglevel allows fine control of log levels by subsystem.
* See also knet_handle_new for defaults.
*
* @return
* knet_log_set_loglevel returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_log_set_loglevel(knet_handle_t knet_h, uint8_t subsystem,
uint8_t level);
/**
* knet_log_get_log_level
*
* @brief Get the logging level for a subsystem
*
* knet_h - same as above
*
* subsystem - same as above
*
* level - same as above
*
* @return
* knet_log_get_loglevel returns
* 0 on success
* -1 on error and errno is set.
*/
int knet_log_get_loglevel(knet_handle_t knet_h, uint8_t subsystem,
uint8_t *level);
#endif
diff --git a/libknet/tests/api-check.mk b/libknet/tests/api-check.mk
index a86f5d1e..39221fea 100644
--- a/libknet/tests/api-check.mk
+++ b/libknet/tests/api-check.mk
@@ -1,258 +1,266 @@
#
# Copyright (C) 2016-2018 Red Hat, Inc. All rights reserved.
#
# Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
#
# This software licensed under GPL-2.0+, LGPL-2.0+
#
api_checks = \
api_knet_handle_new_test \
api_knet_handle_free_test \
api_knet_handle_compress_test \
api_knet_handle_crypto_test \
api_knet_handle_setfwd_test \
api_knet_handle_enable_filter_test \
api_knet_handle_enable_sock_notify_test \
api_knet_handle_add_datafd_test \
api_knet_handle_remove_datafd_test \
api_knet_handle_get_channel_test \
api_knet_handle_get_datafd_test \
api_knet_handle_get_stats_test \
api_knet_get_crypto_list_test \
api_knet_get_compress_list_test \
api_knet_handle_clear_stats_test \
api_knet_get_transport_list_test \
api_knet_get_transport_name_by_id_test \
api_knet_get_transport_id_by_name_test \
api_knet_handle_set_transport_reconnect_interval_test \
api_knet_handle_get_transport_reconnect_interval_test \
api_knet_recv_test \
api_knet_send_test \
api_knet_send_crypto_test \
api_knet_send_compress_test \
api_knet_send_sync_test \
api_knet_send_loopback_test \
api_knet_handle_pmtud_setfreq_test \
api_knet_handle_pmtud_getfreq_test \
api_knet_handle_enable_pmtud_notify_test \
api_knet_handle_pmtud_get_test \
api_knet_host_add_test \
api_knet_host_remove_test \
api_knet_host_set_name_test \
api_knet_host_get_name_by_host_id_test \
api_knet_host_get_id_by_host_name_test \
api_knet_host_get_host_list_test \
api_knet_host_set_policy_test \
api_knet_host_get_policy_test \
api_knet_host_get_status_test \
api_knet_host_enable_status_change_notify_test \
api_knet_log_get_subsystem_name_test \
api_knet_log_get_subsystem_id_test \
api_knet_log_get_loglevel_name_test \
api_knet_log_get_loglevel_id_test \
api_knet_log_set_loglevel_test \
api_knet_log_get_loglevel_test \
api_knet_strtoaddr_test \
api_knet_addrtostr_test \
api_knet_link_set_config_test \
api_knet_link_clear_config_test \
api_knet_link_get_config_test \
api_knet_link_set_ping_timers_test \
api_knet_link_get_ping_timers_test \
api_knet_link_set_pong_count_test \
api_knet_link_get_pong_count_test \
api_knet_link_set_priority_test \
api_knet_link_get_priority_test \
api_knet_link_set_enable_test \
api_knet_link_get_enable_test \
api_knet_link_get_link_list_test \
api_knet_link_get_status_test \
- api_knet_link_enable_status_change_notify_test
+ api_knet_link_enable_status_change_notify_test \
+ api_knet_handle_set_threads_timer_res_test \
+ api_knet_handle_get_threads_timer_res_test
api_knet_handle_new_test_SOURCES = api_knet_handle_new.c \
test-common.c
api_knet_handle_free_test_SOURCES = api_knet_handle_free.c \
test-common.c
api_knet_handle_new_limit_test_SOURCES = api_knet_handle_new_limit.c \
test-common.c
api_knet_handle_compress_test_SOURCES = api_knet_handle_compress.c \
test-common.c
api_knet_handle_crypto_test_SOURCES = api_knet_handle_crypto.c \
test-common.c
api_knet_handle_setfwd_test_SOURCES = api_knet_handle_setfwd.c \
test-common.c
api_knet_handle_enable_filter_test_SOURCES = api_knet_handle_enable_filter.c \
test-common.c
api_knet_handle_enable_sock_notify_test_SOURCES = api_knet_handle_enable_sock_notify.c \
test-common.c
api_knet_handle_add_datafd_test_SOURCES = api_knet_handle_add_datafd.c \
test-common.c
api_knet_handle_remove_datafd_test_SOURCES = api_knet_handle_remove_datafd.c \
test-common.c
api_knet_handle_get_channel_test_SOURCES = api_knet_handle_get_channel.c \
test-common.c
api_knet_handle_get_datafd_test_SOURCES = api_knet_handle_get_datafd.c \
test-common.c
api_knet_handle_get_stats_test_SOURCES = api_knet_handle_get_stats.c \
test-common.c
api_knet_get_crypto_list_test_SOURCES = api_knet_get_crypto_list.c \
test-common.c
api_knet_get_compress_list_test_SOURCES = api_knet_get_compress_list.c \
test-common.c
api_knet_handle_clear_stats_test_SOURCES = api_knet_handle_clear_stats.c \
test-common.c
api_knet_get_transport_list_test_SOURCES = api_knet_get_transport_list.c \
test-common.c
api_knet_get_transport_name_by_id_test_SOURCES = api_knet_get_transport_name_by_id.c \
test-common.c
api_knet_get_transport_id_by_name_test_SOURCES = api_knet_get_transport_id_by_name.c \
test-common.c
api_knet_handle_set_transport_reconnect_interval_test_SOURCES = api_knet_handle_set_transport_reconnect_interval.c \
test-common.c
api_knet_handle_get_transport_reconnect_interval_test_SOURCES = api_knet_handle_get_transport_reconnect_interval.c \
test-common.c
api_knet_recv_test_SOURCES = api_knet_recv.c \
test-common.c
api_knet_send_test_SOURCES = api_knet_send.c \
test-common.c
api_knet_send_compress_test_SOURCES = api_knet_send_compress.c \
test-common.c
api_knet_send_crypto_test_SOURCES = api_knet_send_crypto.c \
test-common.c
api_knet_send_loopback_test_SOURCES = api_knet_send_loopback.c \
test-common.c
api_knet_send_sync_test_SOURCES = api_knet_send_sync.c \
test-common.c
api_knet_handle_pmtud_setfreq_test_SOURCES = api_knet_handle_pmtud_setfreq.c \
test-common.c
api_knet_handle_pmtud_getfreq_test_SOURCES = api_knet_handle_pmtud_getfreq.c \
test-common.c
api_knet_handle_enable_pmtud_notify_test_SOURCES = api_knet_handle_enable_pmtud_notify.c \
test-common.c
api_knet_handle_pmtud_get_test_SOURCES = api_knet_handle_pmtud_get.c \
test-common.c
api_knet_host_add_test_SOURCES = api_knet_host_add.c \
test-common.c
api_knet_host_remove_test_SOURCES = api_knet_host_remove.c \
test-common.c
api_knet_host_set_name_test_SOURCES = api_knet_host_set_name.c \
test-common.c
api_knet_host_get_name_by_host_id_test_SOURCES = api_knet_host_get_name_by_host_id.c \
test-common.c
api_knet_host_get_id_by_host_name_test_SOURCES = api_knet_host_get_id_by_host_name.c \
test-common.c
api_knet_host_get_host_list_test_SOURCES = api_knet_host_get_host_list.c \
test-common.c
api_knet_host_set_policy_test_SOURCES = api_knet_host_set_policy.c \
test-common.c
api_knet_host_get_policy_test_SOURCES = api_knet_host_get_policy.c \
test-common.c
api_knet_host_get_status_test_SOURCES = api_knet_host_get_status.c \
test-common.c
api_knet_host_enable_status_change_notify_test_SOURCES = api_knet_host_enable_status_change_notify.c \
test-common.c
api_knet_log_get_subsystem_name_test_SOURCES = api_knet_log_get_subsystem_name.c \
test-common.c
api_knet_log_get_subsystem_id_test_SOURCES = api_knet_log_get_subsystem_id.c \
test-common.c
api_knet_log_get_loglevel_name_test_SOURCES = api_knet_log_get_loglevel_name.c \
test-common.c
api_knet_log_get_loglevel_id_test_SOURCES = api_knet_log_get_loglevel_id.c \
test-common.c
api_knet_log_set_loglevel_test_SOURCES = api_knet_log_set_loglevel.c \
test-common.c
api_knet_log_get_loglevel_test_SOURCES = api_knet_log_get_loglevel.c \
test-common.c
api_knet_strtoaddr_test_SOURCES = api_knet_strtoaddr.c
api_knet_addrtostr_test_SOURCES = api_knet_addrtostr.c
api_knet_link_set_config_test_SOURCES = api_knet_link_set_config.c \
test-common.c
api_knet_link_clear_config_test_SOURCES = api_knet_link_clear_config.c \
test-common.c
api_knet_link_get_config_test_SOURCES = api_knet_link_get_config.c \
test-common.c
api_knet_link_set_ping_timers_test_SOURCES = api_knet_link_set_ping_timers.c \
test-common.c
api_knet_link_get_ping_timers_test_SOURCES = api_knet_link_get_ping_timers.c \
test-common.c
api_knet_link_set_pong_count_test_SOURCES = api_knet_link_set_pong_count.c \
test-common.c
api_knet_link_get_pong_count_test_SOURCES = api_knet_link_get_pong_count.c \
test-common.c
api_knet_link_set_priority_test_SOURCES = api_knet_link_set_priority.c \
test-common.c
api_knet_link_get_priority_test_SOURCES = api_knet_link_get_priority.c \
test-common.c
api_knet_link_set_enable_test_SOURCES = api_knet_link_set_enable.c \
test-common.c
api_knet_link_get_enable_test_SOURCES = api_knet_link_get_enable.c \
test-common.c
api_knet_link_get_link_list_test_SOURCES = api_knet_link_get_link_list.c \
test-common.c
api_knet_link_get_status_test_SOURCES = api_knet_link_get_status.c \
test-common.c
api_knet_link_enable_status_change_notify_test_SOURCES = api_knet_link_enable_status_change_notify.c \
test-common.c
+
+api_knet_handle_set_threads_timer_res_test_SOURCES = api_knet_handle_set_threads_timer_res.c \
+ test-common.c
+
+api_knet_handle_get_threads_timer_res_test_SOURCES = api_knet_handle_get_threads_timer_res.c \
+ test-common.c
diff --git a/libknet/tests/api_knet_handle_get_threads_timer_res.c b/libknet/tests/api_knet_handle_get_threads_timer_res.c
new file mode 100644
index 00000000..47f0e57a
--- /dev/null
+++ b/libknet/tests/api_knet_handle_get_threads_timer_res.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) -2019 Red Hat, Inc. All rights reserved.
+ *
+ * Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
+ *
+ * This software licensed under GPL-2.0+, LGPL-2.0+
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "libknet.h"
+
+#include "internals.h"
+#include "test-common.h"
+
+static void test(void)
+{
+ knet_handle_t knet_h;
+ int logfds[2];
+ useconds_t timeres;
+
+ printf("Test knet_handle_get_threads_timer_res incorrect knet_h\n");
+
+ if ((!knet_handle_get_threads_timer_res(NULL, &timeres)) || (errno != EINVAL)) {
+ printf("knet_handle_get_threads_timer_res accepted invalid knet_h or returned incorrect error: %s\n", strerror(errno));
+ exit(FAIL);
+ }
+
+ setup_logpipes(logfds);
+
+ knet_h = knet_handle_start(logfds, KNET_LOG_DEBUG);
+
+ printf("Test knet_handle_get_threads_timer_res with invalid timeres\n");
+
+ if ((!knet_handle_get_threads_timer_res(knet_h, NULL)) || (errno != EINVAL)) {
+ printf("knet_handle_get_threads_timer_res accepted invalid timeres or returned incorrect error: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ printf("Test knet_handle_get_threads_timer_res with valid timeres\n");
+
+ if (knet_handle_get_threads_timer_res(knet_h, &timeres)) {
+ printf("knet_handle_get_threads_timer_res did not accept valid timeres: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ if (timeres != knet_h->threads_timer_res) {
+ printf("knet_handle_get_threads_timer_res did not get timeres correct value: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ printf("Test knet_handle_get_threads_timer_res with valid timeres\n");
+
+ if (knet_handle_set_threads_timer_res(knet_h, 1000)) {
+ printf("knet_handle_set_threads_timer_res did not accept valid timeres: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ if (knet_handle_get_threads_timer_res(knet_h, &timeres)) {
+ printf("knet_handle_get_threads_timer_res did not accept valid timeres: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ if (timeres != knet_h->threads_timer_res) {
+ printf("knet_handle_get_threads_timer_res did not get timeres correct value: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+}
+
+int main(int argc, char *argv[])
+{
+ test();
+
+ return PASS;
+}
diff --git a/libknet/tests/api_knet_handle_set_threads_timer_res.c b/libknet/tests/api_knet_handle_set_threads_timer_res.c
new file mode 100644
index 00000000..6bdcd0d6
--- /dev/null
+++ b/libknet/tests/api_knet_handle_set_threads_timer_res.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2016-2018 Red Hat, Inc. All rights reserved.
+ *
+ * Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
+ *
+ * This software licensed under GPL-2.0+, LGPL-2.0+
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "libknet.h"
+
+#include "internals.h"
+#include "test-common.h"
+
+static void test(void)
+{
+ knet_handle_t knet_h;
+ int logfds[2];
+
+ printf("Test knet_handle_set_threads_timer_res incorrect knet_h\n");
+
+ if ((!knet_handle_set_threads_timer_res(NULL, 0)) || (errno != EINVAL)) {
+ printf("knet_handle_set_threads_timer_res accepted invalid knet_h or returned incorrect error: %s\n", strerror(errno));
+ exit(FAIL);
+ }
+
+ setup_logpipes(logfds);
+
+ knet_h = knet_handle_start(logfds, KNET_LOG_DEBUG);
+
+ printf("Test knet_handle_set_threads_timer_res with invalid timeres\n");
+
+ if ((!knet_handle_set_threads_timer_res(knet_h, 999)) || (errno != EINVAL)) {
+ printf("knet_handle_set_threads_timer_res accepted invalid timeres or returned incorrect error: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ printf("Test knet_handle_set_threads_timer_res with valid timeres\n");
+
+ if (knet_handle_set_threads_timer_res(knet_h, 2000)) {
+ printf("knet_handle_set_threads_timer_res did not accept valid timeres: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ if (knet_h->threads_timer_res != 2000) {
+ printf("knet_handle_set_threads_timer_res did not set timeres to correct value: %s\n", strerror(errno));
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+ exit(FAIL);
+ }
+
+ flush_logs(logfds[0], stdout);
+
+ knet_handle_free(knet_h);
+ flush_logs(logfds[0], stdout);
+ close_logpipes(logfds);
+}
+
+int main(int argc, char *argv[])
+{
+ test();
+
+ return PASS;
+}
diff --git a/libknet/tests/knet_bench.c b/libknet/tests/knet_bench.c
index 12152b66..a01b8993 100644
--- a/libknet/tests/knet_bench.c
+++ b/libknet/tests/knet_bench.c
@@ -1,1299 +1,1298 @@
/*
* Copyright (C) 2016-2018 Red Hat, Inc. All rights reserved.
*
* Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>
#include <sys/types.h>
#include <inttypes.h>
#include "libknet.h"
#include "compat.h"
#include "internals.h"
#include "netutils.h"
#include "transport_common.h"
-#include "threads_common.h"
#include "test-common.h"
#define MAX_NODES 128
static int senderid = -1;
static int thisnodeid = -1;
static knet_handle_t knet_h;
static int datafd = 0;
static int8_t channel = 0;
static int globallistener = 0;
static int continous = 0;
static int show_stats = 0;
static struct sockaddr_storage allv4;
static struct sockaddr_storage allv6;
static int broadcast_test = 1;
static pthread_t rx_thread = (pthread_t)NULL;
static char *rx_buf[PCKT_FRAG_MAX];
static int wait_for_perf_rx = 0;
static char *compresscfg = NULL;
static char *cryptocfg = NULL;
static int machine_output = 0;
static int bench_shutdown_in_progress = 0;
static pthread_mutex_t shutdown_mutex = PTHREAD_MUTEX_INITIALIZER;
#define TEST_PING 0
#define TEST_PING_AND_DATA 1
#define TEST_PERF_BY_SIZE 2
#define TEST_PERF_BY_TIME 3
static int test_type = TEST_PING;
#define TEST_START 2
#define TEST_STOP 4
#define TEST_COMPLETE 6
#define ONE_GIGABYTE 1073741824
static uint64_t perf_by_size_size = 1 * ONE_GIGABYTE;
static uint64_t perf_by_time_secs = 10;
struct node {
int nodeid;
int links;
uint8_t transport[KNET_MAX_LINK];
struct sockaddr_storage address[KNET_MAX_LINK];
};
static void print_help(void)
{
printf("knet_bench usage:\n");
printf(" -h print this help (no really)\n");
printf(" -d enable debug logs (default INFO)\n");
printf(" -c [implementation]:[crypto]:[hashing] crypto configuration. (default disabled)\n");
printf(" Example: -c nss:aes128:sha1\n");
printf(" -z [implementation]:[level]:[threshold] compress configuration. (default disabled)\n");
printf(" Example: -z zlib:5:100\n");
printf(" -p [active|passive|rr] (default: passive)\n");
printf(" -P [UDP|SCTP] (default: UDP) protocol (transport) to use for all links\n");
printf(" -t [nodeid] This nodeid (required)\n");
printf(" -n [nodeid],[proto]/[link1_ip],[link2_..] Other nodes information (at least one required)\n");
printf(" Example: -t 1,192.168.8.1,SCTP/3ffe::8:1,UDP/172...\n");
printf(" can be repeated up to %d and should contain also the localnode info\n", MAX_NODES);
printf(" -b [port] baseport (default: 50000)\n");
printf(" -l enable global listener on 0.0.0.0/:: (default: off, incompatible with -o)\n");
printf(" -o enable baseport offset per nodeid\n");
printf(" -m change PMTUd interval in seconds (default: 60)\n");
printf(" -w dont wait for all nodes to be up before starting the test (default: wait)\n");
printf(" -T [ping|ping_data|perf-by-size|perf-by-time]\n");
printf(" test type (default: ping)\n");
printf(" ping: will wait for all hosts to join the knet network, sleep 5 seconds and quit\n");
printf(" ping_data: will wait for all hosts to join the knet network, sends some data to all nodes and quit\n");
printf(" perf-by-size: will wait for all hosts to join the knet network,\n");
printf(" perform a series of benchmarks by transmitting a known\n");
printf(" size/quantity of packets and measuring the time, then quit\n");
printf(" perf-by-time: will wait for all hosts to join the knet network,\n");
printf(" perform a series of benchmarks by transmitting a known\n");
printf(" size of packets for a given amount of time (10 seconds)\n");
printf(" and measuring the quantity of data transmitted, then quit\n");
printf(" -s nodeid that will generate traffic for benchmarks\n");
printf(" -S [size|seconds] when used in combination with -T perf-by-size it indicates how many GB of traffic to generate for the test. (default: 1GB)\n");
printf(" when used in combination with -T perf-by-time it indicates how many Seconds of traffic to generate for the test. (default: 10 seconds)\n");
printf(" -C repeat the test continously (default: off)\n");
printf(" -X[XX] show stats at the end of the run (default: 1)\n");
printf(" 1: show handle stats, 2: show summary link stats\n");
printf(" 3: show detailed link stats\n");
printf(" -a enable machine parsable output (default: off).\n");
}
static void parse_nodes(char *nodesinfo[MAX_NODES], int onidx, int port, struct node nodes[MAX_NODES], int *thisidx)
{
int i;
char *temp = NULL;
char port_str[10];
memset(port_str, 0, sizeof(port_str));
sprintf(port_str, "%d", port);
for (i = 0; i < onidx; i++) {
nodes[i].nodeid = atoi(strtok(nodesinfo[i], ","));
if ((nodes[i].nodeid < 0) || (nodes[i].nodeid > KNET_MAX_HOST)) {
printf("Invalid nodeid: %d (0 - %d)\n", nodes[i].nodeid, KNET_MAX_HOST);
exit(FAIL);
}
if (thisnodeid == nodes[i].nodeid) {
*thisidx = i;
}
while((temp = strtok(NULL, ","))) {
char *slash = NULL;
uint8_t transport;
if (nodes[i].links == KNET_MAX_LINK) {
printf("Too many links configured. Max %d\n", KNET_MAX_LINK);
exit(FAIL);
}
slash = strstr(temp, "/");
if (slash) {
memset(slash, 0, 1);
transport = knet_get_transport_id_by_name(temp);
if (transport == KNET_MAX_TRANSPORTS) {
printf("Unknown transport: %s\n", temp);
exit(FAIL);
}
nodes[i].transport[nodes[i].links] = transport;
temp = slash + 1;
} else {
nodes[i].transport[nodes[i].links] = KNET_TRANSPORT_UDP;
}
if (knet_strtoaddr(temp, port_str,
&nodes[i].address[nodes[i].links],
sizeof(struct sockaddr_storage)) < 0) {
printf("Unable to convert %s to sockaddress\n", temp);
exit(FAIL);
}
nodes[i].links++;
}
}
if (knet_strtoaddr("0.0.0.0", port_str, &allv4, sizeof(struct sockaddr_storage)) < 0) {
printf("Unable to convert 0.0.0.0 to sockaddress\n");
exit(FAIL);
}
if (knet_strtoaddr("::", port_str, &allv6, sizeof(struct sockaddr_storage)) < 0) {
printf("Unable to convert :: to sockaddress\n");
exit(FAIL);
}
for (i = 1; i < onidx; i++) {
if (nodes[0].links != nodes[i].links) {
printf("knet_bench does not support unbalanced link configuration\n");
exit(FAIL);
}
}
return;
}
static int private_data;
static void sock_notify(void *pvt_data,
int local_datafd,
int8_t local_channel,
uint8_t tx_rx,
int error,
int errorno)
{
printf("[info]: error (%d - %d - %s) from socket: %d\n", error, errorno, strerror(errno), local_datafd);
return;
}
static int ping_dst_host_filter(void *pvt_data,
const unsigned char *outdata,
ssize_t outdata_len,
uint8_t tx_rx,
knet_node_id_t this_host_id,
knet_node_id_t src_host_id,
int8_t *dst_channel,
knet_node_id_t *dst_host_ids,
size_t *dst_host_ids_entries)
{
if (broadcast_test) {
return 1;
}
if (tx_rx == KNET_NOTIFY_TX) {
memmove(&dst_host_ids[0], outdata, 2);
} else {
dst_host_ids[0] = this_host_id;
}
*dst_host_ids_entries = 1;
return 0;
}
static void setup_knet(int argc, char *argv[])
{
int logfd = 0;
int rv;
char *policystr = NULL, *protostr = NULL;
char *othernodeinfo[MAX_NODES];
struct node nodes[MAX_NODES];
int thisidx = -1;
int onidx = 0;
int debug = KNET_LOG_INFO;
int port = 50000, portoffset = 0;
int thisport = 0, otherport = 0;
int thisnewport = 0, othernewport = 0;
struct sockaddr_in *so_in;
struct sockaddr_in6 *so_in6;
struct sockaddr_storage *src;
int i, link_idx, allnodesup = 0;
int policy = KNET_LINK_POLICY_PASSIVE, policyfound = 0;
int protocol = KNET_TRANSPORT_UDP, protofound = 0;
int wait = 1;
int pmtud_interval = 60;
struct knet_handle_crypto_cfg knet_handle_crypto_cfg;
char *cryptomodel = NULL, *cryptotype = NULL, *cryptohash = NULL;
struct knet_handle_compress_cfg knet_handle_compress_cfg;
memset(nodes, 0, sizeof(nodes));
while ((rv = getopt(argc, argv, "aCT:S:s:ldom:wb:t:n:c:p:X::P:z:h")) != EOF) {
switch(rv) {
case 'h':
print_help();
exit(PASS);
break;
case 'a':
machine_output = 1;
break;
case 'd':
debug = KNET_LOG_DEBUG;
break;
case 'c':
if (cryptocfg) {
printf("Error: -c can only be specified once\n");
exit(FAIL);
}
cryptocfg = optarg;
break;
case 'p':
if (policystr) {
printf("Error: -p can only be specified once\n");
exit(FAIL);
}
policystr = optarg;
if (!strcmp(policystr, "active")) {
policy = KNET_LINK_POLICY_ACTIVE;
policyfound = 1;
}
/*
* we can't use rr because clangs can't compile
* an array of 3 strings, one of which is 2 bytes long
*/
if (!strcmp(policystr, "round-robin")) {
policy = KNET_LINK_POLICY_RR;
policyfound = 1;
}
if (!strcmp(policystr, "passive")) {
policy = KNET_LINK_POLICY_PASSIVE;
policyfound = 1;
}
if (!policyfound) {
printf("Error: invalid policy %s specified. -p accepts active|passive|rr\n", policystr);
exit(FAIL);
}
break;
case 'P':
if (protostr) {
printf("Error: -P can only be specified once\n");
exit(FAIL);
}
protostr = optarg;
if (!strcmp(protostr, "UDP")) {
protocol = KNET_TRANSPORT_UDP;
protofound = 1;
}
if (!strcmp(protostr, "SCTP")) {
protocol = KNET_TRANSPORT_SCTP;
protofound = 1;
}
if (!protofound) {
printf("Error: invalid protocol %s specified. -P accepts udp|sctp\n", policystr);
exit(FAIL);
}
break;
case 't':
if (thisnodeid >= 0) {
printf("Error: -t can only be specified once\n");
exit(FAIL);
}
thisnodeid = atoi(optarg);
if ((thisnodeid < 0) || (thisnodeid > 65536)) {
printf("Error: -t nodeid out of range %d (1 - 65536)\n", thisnodeid);
exit(FAIL);
}
break;
case 'n':
if (onidx == MAX_NODES) {
printf("Error: too many other nodes. Max %d\n", MAX_NODES);
exit(FAIL);
}
othernodeinfo[onidx] = optarg;
onidx++;
break;
case 'b':
port = atoi(optarg);
if ((port < 1) || (port > 65536)) {
printf("Error: port %d out of range (1 - 65536)\n", port);
exit(FAIL);
}
break;
case 'o':
if (globallistener) {
printf("Error: -l cannot be used with -o\n");
exit(FAIL);
}
portoffset = 1;
break;
case 'm':
pmtud_interval = atoi(optarg);
if (pmtud_interval < 1) {
printf("Error: pmtud interval %d out of range (> 0)\n", pmtud_interval);
exit(FAIL);
}
break;
case 'l':
if (portoffset) {
printf("Error: -o cannot be used with -l\n");
exit(FAIL);
}
globallistener = 1;
break;
case 'w':
wait = 0;
break;
case 's':
if (senderid >= 0) {
printf("Error: -s can only be specified once\n");
exit(FAIL);
}
senderid = atoi(optarg);
if ((senderid < 0) || (senderid > 65536)) {
printf("Error: -s nodeid out of range %d (1 - 65536)\n", senderid);
exit(FAIL);
}
break;
case 'T':
if (!strcmp("ping", optarg)) {
test_type = TEST_PING;
}
if (!strcmp("ping_data", optarg)) {
test_type = TEST_PING_AND_DATA;
}
if (!strcmp("perf-by-size", optarg)) {
test_type = TEST_PERF_BY_SIZE;
}
if (!strcmp("perf-by-time", optarg)) {
test_type = TEST_PERF_BY_TIME;
}
break;
case 'S':
perf_by_size_size = (uint64_t)atoi(optarg) * ONE_GIGABYTE;
perf_by_time_secs = (uint64_t)atoi(optarg);
break;
case 'C':
continous = 1;
break;
case 'X':
if (optarg) {
show_stats = atoi(optarg);
} else {
show_stats = 1;
}
break;
case 'z':
if (compresscfg) {
printf("Error: -c can only be specified once\n");
exit(FAIL);
}
compresscfg = optarg;
break;
default:
break;
}
}
if (thisnodeid < 0) {
printf("Who am I?!? missing -t from command line?\n");
exit(FAIL);
}
if (onidx < 1) {
printf("no other nodes configured?!? missing -n from command line\n");
exit(FAIL);
}
parse_nodes(othernodeinfo, onidx, port, nodes, &thisidx);
if (thisidx < 0) {
printf("no config for this node found\n");
exit(FAIL);
}
if (senderid >= 0) {
for (i=0; i < onidx; i++) {
if (senderid == nodes[i].nodeid) {
break;
}
}
if (i == onidx) {
printf("Unable to find senderid in nodelist\n");
exit(FAIL);
}
}
if (((test_type == TEST_PERF_BY_SIZE) || (test_type == TEST_PERF_BY_TIME)) && (senderid < 0)) {
printf("Error: performance test requires -s to be set (for now)\n");
exit(FAIL);
}
logfd = start_logging(stdout);
knet_h = knet_handle_new(thisnodeid, logfd, debug, 0);
if (!knet_h) {
printf("Unable to knet_handle_new: %s\n", strerror(errno));
exit(FAIL);
}
if (cryptocfg) {
memset(&knet_handle_crypto_cfg, 0, sizeof(knet_handle_crypto_cfg));
cryptomodel = strtok(cryptocfg, ":");
cryptotype = strtok(NULL, ":");
cryptohash = strtok(NULL, ":");
if (cryptomodel) {
strncpy(knet_handle_crypto_cfg.crypto_model, cryptomodel, sizeof(knet_handle_crypto_cfg.crypto_model) - 1);
}
if (cryptotype) {
strncpy(knet_handle_crypto_cfg.crypto_cipher_type, cryptotype, sizeof(knet_handle_crypto_cfg.crypto_cipher_type) - 1);
}
if (cryptohash) {
strncpy(knet_handle_crypto_cfg.crypto_hash_type, cryptohash, sizeof(knet_handle_crypto_cfg.crypto_hash_type) - 1);
}
knet_handle_crypto_cfg.private_key_len = KNET_MAX_KEY_LEN;
if (knet_handle_crypto(knet_h, &knet_handle_crypto_cfg)) {
printf("Unable to init crypto\n");
exit(FAIL);
}
}
if (compresscfg) {
memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
snprintf(knet_handle_compress_cfg.compress_model, 16, "%s", strtok(compresscfg, ":"));
knet_handle_compress_cfg.compress_level = atoi(strtok(NULL, ":"));
knet_handle_compress_cfg.compress_threshold = atoi(strtok(NULL, ":"));
if (knet_handle_compress(knet_h, &knet_handle_compress_cfg)) {
printf("Unable to configure compress\n");
exit(FAIL);
}
}
if (knet_handle_enable_sock_notify(knet_h, &private_data, sock_notify) < 0) {
printf("knet_handle_enable_sock_notify failed: %s\n", strerror(errno));
knet_handle_free(knet_h);
exit(FAIL);
}
datafd = 0;
channel = -1;
if (knet_handle_add_datafd(knet_h, &datafd, &channel) < 0) {
printf("knet_handle_add_datafd failed: %s\n", strerror(errno));
knet_handle_free(knet_h);
exit(FAIL);
}
if (knet_handle_pmtud_setfreq(knet_h, pmtud_interval) < 0) {
printf("knet_handle_pmtud_setfreq failed: %s\n", strerror(errno));
knet_handle_free(knet_h);
exit(FAIL);
}
for (i=0; i < onidx; i++) {
if (i == thisidx) {
continue;
}
if (knet_host_add(knet_h, nodes[i].nodeid) < 0) {
printf("knet_host_add failed: %s\n", strerror(errno));
exit(FAIL);
}
if (knet_host_set_policy(knet_h, nodes[i].nodeid, policy) < 0) {
printf("knet_host_set_policy failed: %s\n", strerror(errno));
exit(FAIL);
}
for (link_idx = 0; link_idx < nodes[i].links; link_idx++) {
if (portoffset) {
if (nodes[thisidx].address[link_idx].ss_family == AF_INET) {
so_in = (struct sockaddr_in *)&nodes[thisidx].address[link_idx];
thisport = ntohs(so_in->sin_port);
thisnewport = thisport + nodes[i].nodeid;
so_in->sin_port = (htons(thisnewport));
so_in = (struct sockaddr_in *)&nodes[i].address[link_idx];
otherport = ntohs(so_in->sin_port);
othernewport = otherport + nodes[thisidx].nodeid;
so_in->sin_port = (htons(othernewport));
} else {
so_in6 = (struct sockaddr_in6 *)&nodes[thisidx].address[link_idx];
thisport = ntohs(so_in6->sin6_port);
thisnewport = thisport + nodes[i].nodeid;
so_in6->sin6_port = (htons(thisnewport));
so_in6 = (struct sockaddr_in6 *)&nodes[i].address[link_idx];
otherport = ntohs(so_in6->sin6_port);
othernewport = otherport + nodes[thisidx].nodeid;
so_in6->sin6_port = (htons(othernewport));
}
}
if (!globallistener) {
src = &nodes[thisidx].address[link_idx];
} else {
if (nodes[thisidx].address[link_idx].ss_family == AF_INET) {
src = &allv4;
} else {
src = &allv6;
}
}
/*
* -P overrides per link protocol configuration
*/
if (protofound) {
nodes[i].transport[link_idx] = protocol;
}
if (knet_link_set_config(knet_h, nodes[i].nodeid, link_idx,
nodes[i].transport[link_idx], src,
&nodes[i].address[link_idx], 0) < 0) {
printf("Unable to configure link: %s\n", strerror(errno));
exit(FAIL);
}
if (portoffset) {
if (nodes[thisidx].address[link_idx].ss_family == AF_INET) {
so_in = (struct sockaddr_in *)&nodes[thisidx].address[link_idx];
so_in->sin_port = (htons(thisport));
so_in = (struct sockaddr_in *)&nodes[i].address[link_idx];
so_in->sin_port = (htons(otherport));
} else {
so_in6 = (struct sockaddr_in6 *)&nodes[thisidx].address[link_idx];
so_in6->sin6_port = (htons(thisport));
so_in6 = (struct sockaddr_in6 *)&nodes[i].address[link_idx];
so_in6->sin6_port = (htons(otherport));
}
}
if (knet_link_set_enable(knet_h, nodes[i].nodeid, link_idx, 1) < 0) {
printf("knet_link_set_enable failed: %s\n", strerror(errno));
exit(FAIL);
}
if (knet_link_set_ping_timers(knet_h, nodes[i].nodeid, link_idx, 1000, 10000, 2048) < 0) {
printf("knet_link_set_ping_timers failed: %s\n", strerror(errno));
exit(FAIL);
}
if (knet_link_set_pong_count(knet_h, nodes[i].nodeid, link_idx, 2) < 0) {
printf("knet_link_set_pong_count failed: %s\n", strerror(errno));
exit(FAIL);
}
}
}
if (knet_handle_enable_filter(knet_h, NULL, ping_dst_host_filter)) {
printf("Unable to enable dst_host_filter: %s\n", strerror(errno));
exit(FAIL);
}
if (knet_handle_setfwd(knet_h, 1) < 0) {
printf("knet_handle_setfwd failed: %s\n", strerror(errno));
exit(FAIL);
}
if (wait) {
while(!allnodesup) {
allnodesup = 1;
for (i=0; i < onidx; i++) {
if (i == thisidx) {
continue;
}
if (knet_h->host_index[nodes[i].nodeid]->status.reachable != 1) {
printf("[info]: waiting host %d to be reachable\n", nodes[i].nodeid);
allnodesup = 0;
}
}
if (!allnodesup) {
sleep(1);
}
}
sleep(1);
}
}
static void *_rx_thread(void *args)
{
int rx_epoll;
struct epoll_event ev;
struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
struct sockaddr_storage address[PCKT_FRAG_MAX];
struct knet_mmsghdr msg[PCKT_FRAG_MAX];
struct iovec iov_in[PCKT_FRAG_MAX];
int i, msg_recv;
struct timespec clock_start, clock_end;
unsigned long long time_diff = 0;
uint64_t rx_pkts = 0;
uint64_t rx_bytes = 0;
unsigned int current_pckt_size = 0;
for (i = 0; i < PCKT_FRAG_MAX; i++) {
rx_buf[i] = malloc(KNET_MAX_PACKET_SIZE);
if (!rx_buf[i]) {
printf("RXT: Unable to malloc!\nHALTING RX THREAD!\n");
return NULL;
}
memset(rx_buf[i], 0, KNET_MAX_PACKET_SIZE);
iov_in[i].iov_base = (void *)rx_buf[i];
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;
}
rx_epoll = epoll_create(KNET_EPOLL_MAX_EVENTS + 1);
if (rx_epoll < 0) {
printf("RXT: Unable to create epoll!\nHALTING RX THREAD!\n");
return NULL;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = datafd;
if (epoll_ctl(rx_epoll, EPOLL_CTL_ADD, datafd, &ev)) {
printf("RXT: Unable to add datafd to epoll\nHALTING RX THREAD!\n");
return NULL;
}
memset(&clock_start, 0, sizeof(clock_start));
memset(&clock_end, 0, sizeof(clock_start));
while (!bench_shutdown_in_progress) {
if (epoll_wait(rx_epoll, events, KNET_EPOLL_MAX_EVENTS, 1) >= 1) {
msg_recv = _recvmmsg(datafd, &msg[0], PCKT_FRAG_MAX, MSG_DONTWAIT | MSG_NOSIGNAL);
if (msg_recv < 0) {
printf("[info]: RXT: error from recvmmsg: %s\n", strerror(errno));
}
switch(test_type) {
case TEST_PING_AND_DATA:
for (i = 0; i < msg_recv; i++) {
if (msg[i].msg_len == 0) {
printf("[info]: RXT: received 0 bytes message?\n");
}
printf("[info]: received %u bytes message: %s\n", msg[i].msg_len, (char *)msg[i].msg_hdr.msg_iov->iov_base);
}
break;
case TEST_PERF_BY_TIME:
case TEST_PERF_BY_SIZE:
for (i = 0; i < msg_recv; i++) {
if (msg[i].msg_len < 64) {
if (msg[i].msg_len == 0) {
printf("[info]: RXT: received 0 bytes message?\n");
}
if (msg[i].msg_len == TEST_START) {
if (clock_gettime(CLOCK_MONOTONIC, &clock_start) != 0) {
printf("[info]: unable to get start time!\n");
}
}
if (msg[i].msg_len == TEST_STOP) {
double average_rx_mbytes;
double average_rx_pkts;
double time_diff_sec;
if (clock_gettime(CLOCK_MONOTONIC, &clock_end) != 0) {
printf("[info]: unable to get end time!\n");
}
timespec_diff(clock_start, clock_end, &time_diff);
/*
* adjust for sleep(2) between sending the last data and TEST_STOP
*/
time_diff = time_diff - 2000000000llu;
/*
* convert to seconds
*/
time_diff_sec = (double)time_diff / 1000000000llu;
average_rx_mbytes = (double)((rx_bytes / time_diff_sec) / (1024 * 1024));
average_rx_pkts = (double)(rx_pkts / time_diff_sec);
if (!machine_output) {
printf("[perf] execution time: %8.4f secs Average speed: %8.4f MB/sec %8.4f pckts/sec (size: %u total: %" PRIu64 ")\n",
time_diff_sec, average_rx_mbytes, average_rx_pkts, current_pckt_size, rx_pkts);
} else {
printf("[perf],%.4f,%u,%" PRIu64 ",%.4f,%.4f\n", time_diff_sec, current_pckt_size, rx_pkts, average_rx_mbytes, average_rx_pkts);
}
rx_pkts = 0;
rx_bytes = 0;
current_pckt_size = 0;
}
if (msg[i].msg_len == TEST_COMPLETE) {
wait_for_perf_rx = 1;
}
continue;
}
rx_pkts++;
rx_bytes = rx_bytes + msg[i].msg_len;
current_pckt_size = msg[i].msg_len;
}
break;
}
}
}
epoll_ctl(rx_epoll, EPOLL_CTL_DEL, datafd, &ev);
close(rx_epoll);
return NULL;
}
static void setup_data_txrx_common(void)
{
if (!rx_thread) {
if (knet_handle_enable_filter(knet_h, NULL, ping_dst_host_filter)) {
printf("Unable to enable dst_host_filter: %s\n", strerror(errno));
exit(FAIL);
}
printf("[info]: setting up rx thread\n");
if (pthread_create(&rx_thread, 0, _rx_thread, NULL)) {
printf("Unable to start rx thread\n");
exit(FAIL);
}
}
}
static void stop_rx_thread(void)
{
void *retval;
int i;
if (rx_thread) {
printf("[info]: shutting down rx thread\n");
sleep(2);
pthread_cancel(rx_thread);
pthread_join(rx_thread, &retval);
for (i = 0; i < PCKT_FRAG_MAX; i ++) {
free(rx_buf[i]);
}
}
}
static void send_ping_data(void)
{
char buf[65535];
ssize_t len;
memset(&buf, 0, sizeof(buf));
snprintf(buf, sizeof(buf), "Hello world!");
if (compresscfg) {
len = sizeof(buf);
} else {
len = strlen(buf);
}
if (knet_send(knet_h, buf, len, channel) != len) {
printf("[info]: Error sending hello world: %s\n", strerror(errno));
}
sleep(1);
}
static int send_messages(struct knet_mmsghdr *msg, int msgs_to_send)
{
int sent_msgs, prev_sent, progress, total_sent;
total_sent = 0;
sent_msgs = 0;
prev_sent = 0;
progress = 1;
retry:
errno = 0;
sent_msgs = _sendmmsg(datafd, &msg[0], msgs_to_send, MSG_NOSIGNAL);
if (sent_msgs < 0) {
if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
- usleep(KNET_THREADS_TIMERES / 16);
+ usleep(KNET_THREADS_TIMER_RES / 16);
goto retry;
}
printf("[info]: Unable to send messages: %s\n", strerror(errno));
return -1;
}
total_sent = total_sent + sent_msgs;
if ((sent_msgs >= 0) && (sent_msgs < msgs_to_send)) {
if ((sent_msgs) || (progress)) {
msgs_to_send = msgs_to_send - sent_msgs;
prev_sent = prev_sent + sent_msgs;
if (sent_msgs) {
progress = 1;
} else {
progress = 0;
}
goto retry;
}
if (!progress) {
printf("[info]: Unable to send more messages after retry\n");
}
}
return total_sent;
}
static int setup_send_buffers_common(struct knet_mmsghdr *msg, struct iovec *iov_out, char *tx_buf[])
{
int i;
for (i = 0; i < PCKT_FRAG_MAX; i++) {
tx_buf[i] = malloc(KNET_MAX_PACKET_SIZE);
if (!tx_buf[i]) {
printf("TXT: Unable to malloc!\n");
return -1;
}
memset(tx_buf[i], 0, KNET_MAX_PACKET_SIZE);
iov_out[i].iov_base = (void *)tx_buf[i];
memset(&msg[i].msg_hdr, 0, sizeof(struct msghdr));
msg[i].msg_hdr.msg_iov = &iov_out[i];
msg[i].msg_hdr.msg_iovlen = 1;
}
return 0;
}
static void send_perf_data_by_size(void)
{
char *tx_buf[PCKT_FRAG_MAX];
struct knet_mmsghdr msg[PCKT_FRAG_MAX];
struct iovec iov_out[PCKT_FRAG_MAX];
char ctrl_message[16];
int sent_msgs;
int i;
uint64_t total_pkts_to_tx;
uint64_t packets_to_send;
uint32_t packetsize = 64;
setup_send_buffers_common(msg, iov_out, tx_buf);
while (packetsize <= KNET_MAX_PACKET_SIZE) {
for (i = 0; i < PCKT_FRAG_MAX; i++) {
iov_out[i].iov_len = packetsize;
}
total_pkts_to_tx = perf_by_size_size / packetsize;
printf("[info]: testing with %u packet size. total bytes to transfer: %" PRIu64 " (%" PRIu64 " packets)\n", packetsize, perf_by_size_size, total_pkts_to_tx);
memset(ctrl_message, 0, sizeof(ctrl_message));
knet_send(knet_h, ctrl_message, TEST_START, channel);
while (total_pkts_to_tx > 0) {
if (total_pkts_to_tx >= PCKT_FRAG_MAX) {
packets_to_send = PCKT_FRAG_MAX;
} else {
packets_to_send = total_pkts_to_tx;
}
sent_msgs = send_messages(&msg[0], packets_to_send);
if (sent_msgs < 0) {
printf("Something went wrong, aborting\n");
exit(FAIL);
}
total_pkts_to_tx = total_pkts_to_tx - sent_msgs;
}
sleep(2);
knet_send(knet_h, ctrl_message, TEST_STOP, channel);
if (packetsize == KNET_MAX_PACKET_SIZE) {
break;
}
/*
* Use a multiplier that can always divide properly a GB
* into smaller chunks without worry about boundaries
*/
packetsize *= 4;
if (packetsize > KNET_MAX_PACKET_SIZE) {
packetsize = KNET_MAX_PACKET_SIZE;
}
}
knet_send(knet_h, ctrl_message, TEST_COMPLETE, channel);
for (i = 0; i < PCKT_FRAG_MAX; i++) {
free(tx_buf[i]);
}
}
/* For sorting the node list into order */
static int node_compare(const void *aptr, const void *bptr)
{
uint16_t a,b;
a = *(uint16_t *)aptr;
b = *(uint16_t *)bptr;
return a > b;
}
static void display_stats(int level)
{
struct knet_handle_stats handle_stats;
struct knet_link_status link_status;
struct knet_link_stats total_link_stats;
knet_node_id_t host_list[KNET_MAX_HOST];
uint8_t link_list[KNET_MAX_LINK];
int res;
unsigned int i,j;
size_t num_hosts, num_links;
res = knet_handle_get_stats(knet_h, &handle_stats, sizeof(handle_stats));
if (res) {
perror("[info]: failed to get knet handle stats");
return;
}
if (compresscfg || cryptocfg) {
printf("\n");
printf("[stat]: handle stats\n");
printf("[stat]: ------------\n");
if (compresscfg) {
printf("[stat]: tx_uncompressed_packets: %" PRIu64 "\n", handle_stats.tx_uncompressed_packets);
printf("[stat]: tx_compressed_packets: %" PRIu64 "\n", handle_stats.tx_compressed_packets);
printf("[stat]: tx_compressed_original_bytes: %" PRIu64 "\n", handle_stats.tx_compressed_original_bytes);
printf("[stat]: tx_compressed_size_bytes: %" PRIu64 "\n", handle_stats.tx_compressed_size_bytes );
printf("[stat]: tx_compress_time_ave: %" PRIu64 "\n", handle_stats.tx_compress_time_ave);
printf("[stat]: tx_compress_time_min: %" PRIu64 "\n", handle_stats.tx_compress_time_min);
printf("[stat]: tx_compress_time_max: %" PRIu64 "\n", handle_stats.tx_compress_time_max);
printf("[stat]: tx_failed_to_compress: %" PRIu64 "\n", handle_stats.tx_failed_to_compress);
printf("[stat]: tx_unable_to_compress: %" PRIu64 "\n", handle_stats.tx_unable_to_compress);
printf("[stat]: rx_compressed_packets: %" PRIu64 "\n", handle_stats.rx_compressed_packets);
printf("[stat]: rx_compressed_original_bytes: %" PRIu64 "\n", handle_stats.rx_compressed_original_bytes);
printf("[stat]: rx_compressed_size_bytes: %" PRIu64 "\n", handle_stats.rx_compressed_size_bytes);
printf("[stat]: rx_compress_time_ave: %" PRIu64 "\n", handle_stats.rx_compress_time_ave);
printf("[stat]: rx_compress_time_min: %" PRIu64 "\n", handle_stats.rx_compress_time_min);
printf("[stat]: rx_compress_time_max: %" PRIu64 "\n", handle_stats.rx_compress_time_max);
printf("[stat]: rx_failed_to_decompress: %" PRIu64 "\n", handle_stats.rx_failed_to_decompress);
printf("\n");
}
if (cryptocfg) {
printf("[stat]: tx_crypt_packets: %" PRIu64 "\n", handle_stats.tx_crypt_packets);
printf("[stat]: tx_crypt_byte_overhead: %" PRIu64 "\n", handle_stats.tx_crypt_byte_overhead);
printf("[stat]: tx_crypt_time_ave: %" PRIu64 "\n", handle_stats.tx_crypt_time_ave);
printf("[stat]: tx_crypt_time_min: %" PRIu64 "\n", handle_stats.tx_crypt_time_min);
printf("[stat]: tx_crypt_time_max: %" PRIu64 "\n", handle_stats.tx_crypt_time_max);
printf("[stat]: rx_crypt_packets: %" PRIu64 "\n", handle_stats.rx_crypt_packets);
printf("[stat]: rx_crypt_time_ave: %" PRIu64 "\n", handle_stats.rx_crypt_time_ave);
printf("[stat]: rx_crypt_time_min: %" PRIu64 "\n", handle_stats.rx_crypt_time_min);
printf("[stat]: rx_crypt_time_max: %" PRIu64 "\n", handle_stats.rx_crypt_time_max);
printf("\n");
}
}
if (level < 2) {
return;
}
memset(&total_link_stats, 0, sizeof(struct knet_link_stats));
res = knet_host_get_host_list(knet_h, host_list, &num_hosts);
if (res) {
perror("[info]: cannot get host list for stats");
return;
}
/* Print in host ID order */
qsort(host_list, num_hosts, sizeof(uint16_t), node_compare);
for (j=0; j<num_hosts; j++) {
res = knet_link_get_link_list(knet_h, host_list[j], link_list, &num_links);
if (res) {
perror("[info]: cannot get link list for stats");
return;
}
for (i=0; i < num_links; i++) {
res = knet_link_get_status(knet_h,
host_list[j],
link_list[i],
&link_status,
sizeof(link_status));
total_link_stats.tx_data_packets += link_status.stats.tx_data_packets;
total_link_stats.rx_data_packets += link_status.stats.rx_data_packets;
total_link_stats.tx_data_bytes += link_status.stats.tx_data_bytes;
total_link_stats.rx_data_bytes += link_status.stats.rx_data_bytes;
total_link_stats.rx_ping_packets += link_status.stats.rx_ping_packets;
total_link_stats.tx_ping_packets += link_status.stats.tx_ping_packets;
total_link_stats.rx_ping_bytes += link_status.stats.rx_ping_bytes;
total_link_stats.tx_ping_bytes += link_status.stats.tx_ping_bytes;
total_link_stats.rx_pong_packets += link_status.stats.rx_pong_packets;
total_link_stats.tx_pong_packets += link_status.stats.tx_pong_packets;
total_link_stats.rx_pong_bytes += link_status.stats.rx_pong_bytes;
total_link_stats.tx_pong_bytes += link_status.stats.tx_pong_bytes;
total_link_stats.rx_pmtu_packets += link_status.stats.rx_pmtu_packets;
total_link_stats.tx_pmtu_packets += link_status.stats.tx_pmtu_packets;
total_link_stats.rx_pmtu_bytes += link_status.stats.rx_pmtu_bytes;
total_link_stats.tx_pmtu_bytes += link_status.stats.tx_pmtu_bytes;
total_link_stats.tx_total_packets += link_status.stats.tx_total_packets;
total_link_stats.rx_total_packets += link_status.stats.rx_total_packets;
total_link_stats.tx_total_bytes += link_status.stats.tx_total_bytes;
total_link_stats.rx_total_bytes += link_status.stats.rx_total_bytes;
total_link_stats.tx_total_errors += link_status.stats.tx_total_errors;
total_link_stats.tx_total_retries += link_status.stats.tx_total_retries;
total_link_stats.tx_pmtu_errors += link_status.stats.tx_pmtu_errors;
total_link_stats.tx_pmtu_retries += link_status.stats.tx_pmtu_retries;
total_link_stats.tx_ping_errors += link_status.stats.tx_ping_errors;
total_link_stats.tx_ping_retries += link_status.stats.tx_ping_retries;
total_link_stats.tx_pong_errors += link_status.stats.tx_pong_errors;
total_link_stats.tx_pong_retries += link_status.stats.tx_pong_retries;
total_link_stats.tx_data_errors += link_status.stats.tx_data_errors;
total_link_stats.tx_data_retries += link_status.stats.tx_data_retries;
total_link_stats.down_count += link_status.stats.down_count;
total_link_stats.up_count += link_status.stats.up_count;
if (level > 2) {
printf("\n");
printf("[stat]: Node %d Link %d\n", host_list[j], link_list[i]);
printf("[stat]: tx_data_packets: %" PRIu64 "\n", link_status.stats.tx_data_packets);
printf("[stat]: rx_data_packets: %" PRIu64 "\n", link_status.stats.rx_data_packets);
printf("[stat]: tx_data_bytes: %" PRIu64 "\n", link_status.stats.tx_data_bytes);
printf("[stat]: rx_data_bytes: %" PRIu64 "\n", link_status.stats.rx_data_bytes);
printf("[stat]: rx_ping_packets: %" PRIu64 "\n", link_status.stats.rx_ping_packets);
printf("[stat]: tx_ping_packets: %" PRIu64 "\n", link_status.stats.tx_ping_packets);
printf("[stat]: rx_ping_bytes: %" PRIu64 "\n", link_status.stats.rx_ping_bytes);
printf("[stat]: tx_ping_bytes: %" PRIu64 "\n", link_status.stats.tx_ping_bytes);
printf("[stat]: rx_pong_packets: %" PRIu64 "\n", link_status.stats.rx_pong_packets);
printf("[stat]: tx_pong_packets: %" PRIu64 "\n", link_status.stats.tx_pong_packets);
printf("[stat]: rx_pong_bytes: %" PRIu64 "\n", link_status.stats.rx_pong_bytes);
printf("[stat]: tx_pong_bytes: %" PRIu64 "\n", link_status.stats.tx_pong_bytes);
printf("[stat]: rx_pmtu_packets: %" PRIu64 "\n", link_status.stats.rx_pmtu_packets);
printf("[stat]: tx_pmtu_packets: %" PRIu64 "\n", link_status.stats.tx_pmtu_packets);
printf("[stat]: rx_pmtu_bytes: %" PRIu64 "\n", link_status.stats.rx_pmtu_bytes);
printf("[stat]: tx_pmtu_bytes: %" PRIu64 "\n", link_status.stats.tx_pmtu_bytes);
printf("[stat]: tx_total_packets: %" PRIu64 "\n", link_status.stats.tx_total_packets);
printf("[stat]: rx_total_packets: %" PRIu64 "\n", link_status.stats.rx_total_packets);
printf("[stat]: tx_total_bytes: %" PRIu64 "\n", link_status.stats.tx_total_bytes);
printf("[stat]: rx_total_bytes: %" PRIu64 "\n", link_status.stats.rx_total_bytes);
printf("[stat]: tx_total_errors: %" PRIu64 "\n", link_status.stats.tx_total_errors);
printf("[stat]: tx_total_retries: %" PRIu64 "\n", link_status.stats.tx_total_retries);
printf("[stat]: tx_pmtu_errors: %" PRIu32 "\n", link_status.stats.tx_pmtu_errors);
printf("[stat]: tx_pmtu_retries: %" PRIu32 "\n", link_status.stats.tx_pmtu_retries);
printf("[stat]: tx_ping_errors: %" PRIu32 "\n", link_status.stats.tx_ping_errors);
printf("[stat]: tx_ping_retries: %" PRIu32 "\n", link_status.stats.tx_ping_retries);
printf("[stat]: tx_pong_errors: %" PRIu32 "\n", link_status.stats.tx_pong_errors);
printf("[stat]: tx_pong_retries: %" PRIu32 "\n", link_status.stats.tx_pong_retries);
printf("[stat]: tx_data_errors: %" PRIu32 "\n", link_status.stats.tx_data_errors);
printf("[stat]: tx_data_retries: %" PRIu32 "\n", link_status.stats.tx_data_retries);
printf("[stat]: latency_min: %" PRIu32 "\n", link_status.stats.latency_min);
printf("[stat]: latency_max: %" PRIu32 "\n", link_status.stats.latency_max);
printf("[stat]: latency_ave: %" PRIu32 "\n", link_status.stats.latency_ave);
printf("[stat]: latency_samples: %" PRIu32 "\n", link_status.stats.latency_samples);
printf("[stat]: down_count: %" PRIu32 "\n", link_status.stats.down_count);
printf("[stat]: up_count: %" PRIu32 "\n", link_status.stats.up_count);
}
}
}
printf("\n");
printf("[stat]: Total link stats\n");
printf("[stat]: ----------------\n");
printf("[stat]: tx_data_packets: %" PRIu64 "\n", total_link_stats.tx_data_packets);
printf("[stat]: rx_data_packets: %" PRIu64 "\n", total_link_stats.rx_data_packets);
printf("[stat]: tx_data_bytes: %" PRIu64 "\n", total_link_stats.tx_data_bytes);
printf("[stat]: rx_data_bytes: %" PRIu64 "\n", total_link_stats.rx_data_bytes);
printf("[stat]: rx_ping_packets: %" PRIu64 "\n", total_link_stats.rx_ping_packets);
printf("[stat]: tx_ping_packets: %" PRIu64 "\n", total_link_stats.tx_ping_packets);
printf("[stat]: rx_ping_bytes: %" PRIu64 "\n", total_link_stats.rx_ping_bytes);
printf("[stat]: tx_ping_bytes: %" PRIu64 "\n", total_link_stats.tx_ping_bytes);
printf("[stat]: rx_pong_packets: %" PRIu64 "\n", total_link_stats.rx_pong_packets);
printf("[stat]: tx_pong_packets: %" PRIu64 "\n", total_link_stats.tx_pong_packets);
printf("[stat]: rx_pong_bytes: %" PRIu64 "\n", total_link_stats.rx_pong_bytes);
printf("[stat]: tx_pong_bytes: %" PRIu64 "\n", total_link_stats.tx_pong_bytes);
printf("[stat]: rx_pmtu_packets: %" PRIu64 "\n", total_link_stats.rx_pmtu_packets);
printf("[stat]: tx_pmtu_packets: %" PRIu64 "\n", total_link_stats.tx_pmtu_packets);
printf("[stat]: rx_pmtu_bytes: %" PRIu64 "\n", total_link_stats.rx_pmtu_bytes);
printf("[stat]: tx_pmtu_bytes: %" PRIu64 "\n", total_link_stats.tx_pmtu_bytes);
printf("[stat]: tx_total_packets: %" PRIu64 "\n", total_link_stats.tx_total_packets);
printf("[stat]: rx_total_packets: %" PRIu64 "\n", total_link_stats.rx_total_packets);
printf("[stat]: tx_total_bytes: %" PRIu64 "\n", total_link_stats.tx_total_bytes);
printf("[stat]: rx_total_bytes: %" PRIu64 "\n", total_link_stats.rx_total_bytes);
printf("[stat]: tx_total_errors: %" PRIu64 "\n", total_link_stats.tx_total_errors);
printf("[stat]: tx_total_retries: %" PRIu64 "\n", total_link_stats.tx_total_retries);
printf("[stat]: tx_pmtu_errors: %" PRIu32 "\n", total_link_stats.tx_pmtu_errors);
printf("[stat]: tx_pmtu_retries: %" PRIu32 "\n", total_link_stats.tx_pmtu_retries);
printf("[stat]: tx_ping_errors: %" PRIu32 "\n", total_link_stats.tx_ping_errors);
printf("[stat]: tx_ping_retries: %" PRIu32 "\n", total_link_stats.tx_ping_retries);
printf("[stat]: tx_pong_errors: %" PRIu32 "\n", total_link_stats.tx_pong_errors);
printf("[stat]: tx_pong_retries: %" PRIu32 "\n", total_link_stats.tx_pong_retries);
printf("[stat]: tx_data_errors: %" PRIu32 "\n", total_link_stats.tx_data_errors);
printf("[stat]: tx_data_retries: %" PRIu32 "\n", total_link_stats.tx_data_retries);
printf("[stat]: down_count: %" PRIu32 "\n", total_link_stats.down_count);
printf("[stat]: up_count: %" PRIu32 "\n", total_link_stats.up_count);
}
static void send_perf_data_by_time(void)
{
char *tx_buf[PCKT_FRAG_MAX];
struct knet_mmsghdr msg[PCKT_FRAG_MAX];
struct iovec iov_out[PCKT_FRAG_MAX];
char ctrl_message[16];
int sent_msgs;
int i;
uint32_t packetsize = 64;
struct timespec clock_start, clock_end;
unsigned long long time_diff = 0;
setup_send_buffers_common(msg, iov_out, tx_buf);
memset(&clock_start, 0, sizeof(clock_start));
memset(&clock_end, 0, sizeof(clock_start));
while (packetsize <= KNET_MAX_PACKET_SIZE) {
for (i = 0; i < PCKT_FRAG_MAX; i++) {
iov_out[i].iov_len = packetsize;
}
printf("[info]: testing with %u bytes packet size for %" PRIu64 " seconds.\n", packetsize, perf_by_time_secs);
memset(ctrl_message, 0, sizeof(ctrl_message));
knet_send(knet_h, ctrl_message, TEST_START, channel);
if (clock_gettime(CLOCK_MONOTONIC, &clock_start) != 0) {
printf("[info]: unable to get start time!\n");
}
time_diff = 0;
while (time_diff < (perf_by_time_secs * 1000000000llu)) {
sent_msgs = send_messages(&msg[0], PCKT_FRAG_MAX);
if (sent_msgs < 0) {
printf("Something went wrong, aborting\n");
exit(FAIL);
}
if (clock_gettime(CLOCK_MONOTONIC, &clock_end) != 0) {
printf("[info]: unable to get end time!\n");
}
timespec_diff(clock_start, clock_end, &time_diff);
}
sleep(2);
knet_send(knet_h, ctrl_message, TEST_STOP, channel);
if (packetsize == KNET_MAX_PACKET_SIZE) {
break;
}
/*
* Use a multiplier that can always divide properly a GB
* into smaller chunks without worry about boundaries
*/
packetsize *= 4;
if (packetsize > KNET_MAX_PACKET_SIZE) {
packetsize = KNET_MAX_PACKET_SIZE;
}
}
knet_send(knet_h, ctrl_message, TEST_COMPLETE, channel);
for (i = 0; i < PCKT_FRAG_MAX; i++) {
free(tx_buf[i]);
}
}
static void cleanup_all(void)
{
if (pthread_mutex_lock(&shutdown_mutex)) {
return;
}
if (bench_shutdown_in_progress) {
pthread_mutex_unlock(&shutdown_mutex);
return;
}
bench_shutdown_in_progress = 1;
pthread_mutex_unlock(&shutdown_mutex);
if (rx_thread) {
stop_rx_thread();
}
knet_handle_stop(knet_h);
}
static void sigint_handler(int signum)
{
printf("[info]: cleaning up... got signal: %d\n", signum);
cleanup_all();
exit(PASS);
}
int main(int argc, char *argv[])
{
if (signal(SIGINT, sigint_handler) == SIG_ERR) {
printf("Unable to configure SIGINT handler\n");
exit(FAIL);
}
setup_knet(argc, argv);
setup_data_txrx_common();
sleep(5);
restart:
switch(test_type) {
default:
case TEST_PING: /* basic ping, no data */
sleep(5);
break;
case TEST_PING_AND_DATA:
send_ping_data();
break;
case TEST_PERF_BY_SIZE:
if (senderid == thisnodeid) {
send_perf_data_by_size();
} else {
printf("[info]: waiting for perf rx thread to finish\n");
while(!wait_for_perf_rx) {
sleep(1);
}
}
break;
case TEST_PERF_BY_TIME:
if (senderid == thisnodeid) {
send_perf_data_by_time();
} else {
printf("[info]: waiting for perf rx thread to finish\n");
while(!wait_for_perf_rx) {
sleep(1);
}
}
break;
}
if (continous) {
goto restart;
}
if (show_stats) {
display_stats(show_stats);
}
cleanup_all();
return PASS;
}
diff --git a/libknet/threads_common.c b/libknet/threads_common.c
index 6f0ce4a4..f6dcf71f 100644
--- a/libknet/threads_common.c
+++ b/libknet/threads_common.c
@@ -1,158 +1,158 @@
/*
* Copyright (C) 2016-2018 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 <pthread.h>
#include <errno.h>
#include <string.h>
#include "internals.h"
#include "logging.h"
#include "threads_common.h"
int shutdown_in_progress(knet_handle_t knet_h)
{
int savederrno = 0;
int ret;
savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
if (savederrno) {
log_err(knet_h, KNET_SUB_COMMON, "Unable to get read lock: %s",
strerror(savederrno));
errno = savederrno;
return -1;
}
ret = knet_h->fini_in_progress;
pthread_rwlock_unlock(&knet_h->global_rwlock);
return ret;
}
static int pmtud_reschedule(knet_handle_t knet_h)
{
if (pthread_mutex_lock(&knet_h->pmtud_mutex) != 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get mutex lock");
return -1;
}
if (knet_h->pmtud_running) {
knet_h->pmtud_abort = 1;
if (knet_h->pmtud_waiting) {
pthread_cond_signal(&knet_h->pmtud_cond);
}
}
pthread_mutex_unlock(&knet_h->pmtud_mutex);
return 0;
}
int get_global_wrlock(knet_handle_t knet_h)
{
if (pmtud_reschedule(knet_h) < 0) {
log_info(knet_h, KNET_SUB_PMTUD, "Unable to notify PMTUd to reschedule. Expect delays in executing API calls");
}
return pthread_rwlock_wrlock(&knet_h->global_rwlock);
}
static struct pretty_names thread_names[KNET_THREAD_MAX] =
{
{ "TX", KNET_THREAD_TX },
{ "RX", KNET_THREAD_RX },
{ "HB", KNET_THREAD_HB },
{ "PMTUD", KNET_THREAD_PMTUD },
#ifdef HAVE_NETINET_SCTP_H
{ "SCTP_LISTEN", KNET_THREAD_SCTP_LISTEN },
{ "SCTP_CONN", KNET_THREAD_SCTP_CONN },
#endif
{ "DST_LINK", KNET_THREAD_DST_LINK }
};
static struct pretty_names thread_status[] =
{
{ "unregistered", KNET_THREAD_UNREGISTERED },
{ "registered", KNET_THREAD_REGISTERED },
{ "started", KNET_THREAD_STARTED },
{ "stopped", KNET_THREAD_STOPPED }
};
static const char *get_thread_status_name(uint8_t status)
{
unsigned int i;
for (i = 0; i < KNET_THREAD_STATUS_MAX; i++) {
if (thread_status[i].val == status) {
return thread_status[i].name;
}
}
return "unknown";
}
static const char *get_thread_name(uint8_t thread_id)
{
unsigned int i;
for (i = 0; i < KNET_THREAD_MAX; i++) {
if (thread_names[i].val == thread_id) {
return thread_names[i].name;
}
}
return "unknown";
}
int set_thread_status(knet_handle_t knet_h, uint8_t thread_id, uint8_t status)
{
if (pthread_mutex_lock(&knet_h->threads_status_mutex) != 0) {
log_debug(knet_h, KNET_SUB_HANDLE, "Unable to get mutex lock");
return -1;
}
knet_h->threads_status[thread_id] = status;
log_debug(knet_h, KNET_SUB_HANDLE, "Updated status for thread %s to %s",
get_thread_name(thread_id), get_thread_status_name(status));
pthread_mutex_unlock(&knet_h->threads_status_mutex);
return 0;
}
int wait_all_threads_status(knet_handle_t knet_h, uint8_t status)
{
uint8_t i = 0, found = 0;
while (!found) {
- usleep(KNET_THREADS_TIMERES);
+ usleep(knet_h->threads_timer_res);
if (pthread_mutex_lock(&knet_h->threads_status_mutex) != 0) {
continue;
}
found = 1;
for (i = 0; i < KNET_THREAD_MAX; i++) {
if (knet_h->threads_status[i] == KNET_THREAD_UNREGISTERED) {
continue;
}
log_debug(knet_h, KNET_SUB_HANDLE, "Checking thread: %s status: %s req: %s",
get_thread_name(i),
get_thread_status_name(knet_h->threads_status[i]),
get_thread_status_name(status));
if (knet_h->threads_status[i] != status) {
found = 0;
}
}
pthread_mutex_unlock(&knet_h->threads_status_mutex);
}
return 0;
}
diff --git a/libknet/threads_common.h b/libknet/threads_common.h
index 1314c017..10584f80 100644
--- a/libknet/threads_common.h
+++ b/libknet/threads_common.h
@@ -1,49 +1,47 @@
/*
* Copyright (C) 2012-2018 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+
*/
#ifndef __KNET_THREADS_COMMON_H__
#define __KNET_THREADS_COMMON_H__
#include "internals.h"
-#define KNET_THREADS_TIMERES 200000
-
#define KNET_THREAD_UNREGISTERED 0 /* thread does not exist */
#define KNET_THREAD_REGISTERED 1 /* thread has been registered before pthread_create invocation.
make sure threads are registered before calling wait_all_thread_status */
#define KNET_THREAD_STARTED 2 /* thread has reported to be running */
#define KNET_THREAD_STOPPED 3 /* thread has returned */
#define KNET_THREAD_STATUS_MAX KNET_THREAD_STOPPED + 1
#define KNET_THREAD_TX 0
#define KNET_THREAD_RX 1
#define KNET_THREAD_HB 2
#define KNET_THREAD_PMTUD 3
#define KNET_THREAD_DST_LINK 4
#ifdef HAVE_NETINET_SCTP_H
#define KNET_THREAD_SCTP_LISTEN 5
#define KNET_THREAD_SCTP_CONN 6
#endif
#define KNET_THREAD_MAX 32
#define timespec_diff(start, end, diff) \
do { \
if (end.tv_sec > start.tv_sec) \
*(diff) = ((end.tv_sec - start.tv_sec) * 1000000000llu) \
+ end.tv_nsec - start.tv_nsec; \
else \
*(diff) = end.tv_nsec - start.tv_nsec; \
} while (0);
int shutdown_in_progress(knet_handle_t knet_h);
int get_global_wrlock(knet_handle_t knet_h);
int set_thread_status(knet_handle_t knet_h, uint8_t thread_id, uint8_t status);
int wait_all_threads_status(knet_handle_t knet_h, uint8_t status);
#endif
diff --git a/libknet/threads_dsthandler.c b/libknet/threads_dsthandler.c
index 74e7ef07..a46533f8 100644
--- a/libknet/threads_dsthandler.c
+++ b/libknet/threads_dsthandler.c
@@ -1,66 +1,66 @@
/*
* Copyright (C) 2015-2018 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 <unistd.h>
#include <pthread.h>
#include "host.h"
#include "compat.h"
#include "logging.h"
#include "threads_common.h"
#include "threads_dsthandler.h"
#include "threads_pmtud.h"
static void _handle_dst_link_updates(knet_handle_t knet_h)
{
knet_node_id_t host_id;
struct knet_host *host;
if (recv(knet_h->dstsockfd[0], &host_id, sizeof(host_id), MSG_DONTWAIT | MSG_NOSIGNAL) != sizeof(host_id)) {
log_debug(knet_h, KNET_SUB_DSTCACHE, "Short read on dstsockfd");
return;
}
if (get_global_wrlock(knet_h) != 0) {
log_debug(knet_h, KNET_SUB_DSTCACHE, "Unable to get read lock");
return;
}
host = knet_h->host_index[host_id];
if (!host) {
log_debug(knet_h, KNET_SUB_DSTCACHE, "Unable to find host: %u", host_id);
goto out_unlock;
}
_host_dstcache_update_sync(knet_h, host);
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
return;
}
void *_handle_dst_link_handler_thread(void *data)
{
knet_handle_t knet_h = (knet_handle_t) data;
struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
set_thread_status(knet_h, KNET_THREAD_DST_LINK, KNET_THREAD_STARTED);
while (!shutdown_in_progress(knet_h)) {
- if (epoll_wait(knet_h->dst_link_handler_epollfd, events, KNET_EPOLL_MAX_EVENTS, KNET_THREADS_TIMERES / 1000) >= 1)
+ if (epoll_wait(knet_h->dst_link_handler_epollfd, events, KNET_EPOLL_MAX_EVENTS, knet_h->threads_timer_res / 1000) >= 1)
_handle_dst_link_updates(knet_h);
}
set_thread_status(knet_h, KNET_THREAD_DST_LINK, KNET_THREAD_STOPPED);
return NULL;
}
diff --git a/libknet/threads_heartbeat.c b/libknet/threads_heartbeat.c
index 12aaa767..a4111791 100644
--- a/libknet/threads_heartbeat.c
+++ b/libknet/threads_heartbeat.c
@@ -1,222 +1,222 @@
/*
* Copyright (C) 2015-2018 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 <unistd.h>
#include <errno.h>
#include <string.h>
#include <pthread.h>
#include <time.h>
#include "crypto.h"
#include "links.h"
#include "logging.h"
#include "transports.h"
#include "threads_common.h"
#include "threads_heartbeat.h"
static void _link_down(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_link *dst_link)
{
memset(&dst_link->pmtud_last, 0, sizeof(struct timespec));
dst_link->received_pong = 0;
dst_link->status.pong_last.tv_nsec = 0;
dst_link->pong_timeout_backoff = KNET_LINK_PONG_TIMEOUT_BACKOFF;
if (dst_link->status.connected == 1) {
log_info(knet_h, KNET_SUB_LINK, "host: %u link: %u is down",
dst_host->host_id, dst_link->link_id);
_link_updown(knet_h, dst_host->host_id, dst_link->link_id, dst_link->status.enabled, 0);
}
}
static void _handle_check_each(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_link *dst_link, int timed)
{
int err = 0, savederrno = 0;
int len;
ssize_t outlen = KNET_HEADER_PING_SIZE;
struct timespec clock_now, pong_last;
unsigned long long diff_ping;
unsigned char *outbuf = (unsigned char *)knet_h->pingbuf;
if (dst_link->transport_connected == 0) {
_link_down(knet_h, dst_host, dst_link);
return;
}
/* caching last pong to avoid race conditions */
pong_last = dst_link->status.pong_last;
if (clock_gettime(CLOCK_MONOTONIC, &clock_now) != 0) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get monotonic clock");
return;
}
timespec_diff(dst_link->ping_last, clock_now, &diff_ping);
if ((diff_ping >= (dst_link->ping_interval * 1000llu)) || (!timed)) {
memmove(&knet_h->pingbuf->khp_ping_time[0], &clock_now, sizeof(struct timespec));
knet_h->pingbuf->khp_ping_link = dst_link->link_id;
if (pthread_mutex_lock(&knet_h->tx_seq_num_mutex)) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get seq mutex lock");
return;
}
knet_h->pingbuf->khp_ping_seq_num = htons(knet_h->tx_seq_num);
pthread_mutex_unlock(&knet_h->tx_seq_num_mutex);
knet_h->pingbuf->khp_ping_timed = timed;
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(knet_h,
(const unsigned char *)knet_h->pingbuf,
outlen,
knet_h->pingbuf_crypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to crypto ping packet");
return;
}
outbuf = knet_h->pingbuf_crypt;
knet_h->stats_extra.tx_crypt_ping_packets++;
}
retry:
len = sendto(dst_link->outsock, outbuf, outlen,
MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) &dst_link->dst_addr,
sizeof(struct sockaddr_storage));
savederrno = errno;
dst_link->ping_last = clock_now;
dst_link->status.stats.tx_ping_packets++;
dst_link->status.stats.tx_ping_bytes += outlen;
if (len != outlen) {
err = transport_tx_sock_error(knet_h, dst_link->transport_type, dst_link->outsock, len, savederrno);
switch(err) {
case -1: /* unrecoverable error */
log_debug(knet_h, KNET_SUB_HEARTBEAT,
"Unable to send ping (sock: %d) packet (sendto): %d %s. recorded src ip: %s src port: %s dst ip: %s dst port: %s",
dst_link->outsock, savederrno, strerror(savederrno),
dst_link->status.src_ipaddr, dst_link->status.src_port,
dst_link->status.dst_ipaddr, dst_link->status.dst_port);
dst_link->status.stats.tx_ping_errors++;
break;
case 0:
break;
case 1:
dst_link->status.stats.tx_ping_retries++;
goto retry;
break;
}
} else {
dst_link->last_ping_size = outlen;
}
}
timespec_diff(pong_last, clock_now, &diff_ping);
if ((pong_last.tv_nsec) &&
(diff_ping >= (dst_link->pong_timeout_adj * 1000llu))) {
_link_down(knet_h, dst_host, dst_link);
}
}
void _send_pings(knet_handle_t knet_h, int timed)
{
struct knet_host *dst_host;
int link_idx;
if (pthread_mutex_lock(&knet_h->hb_mutex)) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get hb mutex lock");
return;
}
for (dst_host = knet_h->host_head; dst_host != NULL; dst_host = dst_host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
if ((dst_host->link[link_idx].status.enabled != 1) ||
(dst_host->link[link_idx].transport_type == KNET_TRANSPORT_LOOPBACK ) ||
((dst_host->link[link_idx].dynamic == KNET_LINK_DYNIP) &&
(dst_host->link[link_idx].status.dynconnected != 1)))
continue;
_handle_check_each(knet_h, dst_host, &dst_host->link[link_idx], timed);
}
}
pthread_mutex_unlock(&knet_h->hb_mutex);
}
static void _adjust_pong_timeouts(knet_handle_t knet_h)
{
struct knet_host *dst_host;
struct knet_link *dst_link;
int link_idx;
if (pthread_mutex_lock(&knet_h->backoff_mutex)) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get backoff_mutex");
return;
}
for (dst_host = knet_h->host_head; dst_host != NULL; dst_host = dst_host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
if ((dst_host->link[link_idx].status.enabled != 1) ||
(dst_host->link[link_idx].transport_type == KNET_TRANSPORT_LOOPBACK ) ||
((dst_host->link[link_idx].dynamic == KNET_LINK_DYNIP) &&
(dst_host->link[link_idx].status.dynconnected != 1)))
continue;
dst_link = &dst_host->link[link_idx];
if (dst_link->pong_timeout_backoff > 1) {
dst_link->pong_timeout_backoff--;
}
dst_link->pong_timeout_adj = (dst_link->pong_timeout * dst_link->pong_timeout_backoff) + (dst_link->status.stats.latency_max * KNET_LINK_PONG_TIMEOUT_LAT_MUL);
}
}
pthread_mutex_unlock(&knet_h->backoff_mutex);
}
void *_handle_heartbt_thread(void *data)
{
knet_handle_t knet_h = (knet_handle_t) data;
int i = 1;
set_thread_status(knet_h, KNET_THREAD_HB, KNET_THREAD_STARTED);
/* preparing ping buffer */
knet_h->pingbuf->kh_version = KNET_HEADER_VERSION;
knet_h->pingbuf->kh_type = KNET_HEADER_TYPE_PING;
knet_h->pingbuf->kh_node = htons(knet_h->host_id);
while (!shutdown_in_progress(knet_h)) {
- usleep(KNET_THREADS_TIMERES);
+ usleep(knet_h->threads_timer_res);
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get read lock");
continue;
}
/*
* _adjust_pong_timeouts should execute approx once a second.
*/
- if ((i % (1000000 / KNET_THREADS_TIMERES)) == 0) {
+ if ((i % (1000000 / knet_h->threads_timer_res)) == 0) {
_adjust_pong_timeouts(knet_h);
i = 1;
} else {
i++;
}
_send_pings(knet_h, 1);
pthread_rwlock_unlock(&knet_h->global_rwlock);
}
set_thread_status(knet_h, KNET_THREAD_HB, KNET_THREAD_STOPPED);
return NULL;
}
diff --git a/libknet/threads_pmtud.c b/libknet/threads_pmtud.c
index 442a3465..ccdce1b2 100644
--- a/libknet/threads_pmtud.c
+++ b/libknet/threads_pmtud.c
@@ -1,566 +1,566 @@
/*
* Copyright (C) 2015-2018 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 <unistd.h>
#include <string.h>
#include <errno.h>
#include <pthread.h>
#include "crypto.h"
#include "links.h"
#include "host.h"
#include "logging.h"
#include "transports.h"
#include "threads_common.h"
#include "threads_pmtud.h"
static int _handle_check_link_pmtud(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_link *dst_link)
{
int err, ret, savederrno, mutex_retry_limit, failsafe, use_kernel_mtu, warn_once;
uint32_t kernel_mtu; /* record kernel_mtu from EMSGSIZE */
size_t onwire_len; /* current packet onwire size */
size_t overhead_len; /* onwire packet overhead (protocol based) */
size_t max_mtu_len; /* max mtu for protocol */
size_t data_len; /* how much data we can send in the packet
* generally would be onwire_len - overhead_len
* needs to be adjusted for crypto
*/
size_t pad_len; /* crypto packet pad size, needs to move into crypto.c callbacks */
ssize_t len; /* len of what we were able to sendto onwire */
struct timespec ts;
unsigned long long pong_timeout_adj_tmp;
unsigned char *outbuf = (unsigned char *)knet_h->pmtudbuf;
warn_once = 0;
mutex_retry_limit = 0;
failsafe = 0;
pad_len = 0;
dst_link->last_bad_mtu = 0;
knet_h->pmtudbuf->khp_pmtud_link = dst_link->link_id;
switch (dst_link->dst_addr.ss_family) {
case AF_INET6:
max_mtu_len = KNET_PMTUD_SIZE_V6;
overhead_len = KNET_PMTUD_OVERHEAD_V6 + dst_link->proto_overhead;
dst_link->last_good_mtu = dst_link->last_ping_size + overhead_len;
break;
case AF_INET:
max_mtu_len = KNET_PMTUD_SIZE_V4;
overhead_len = KNET_PMTUD_OVERHEAD_V4 + dst_link->proto_overhead;
dst_link->last_good_mtu = dst_link->last_ping_size + overhead_len;
break;
default:
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD aborted, unknown protocol");
return -1;
break;
}
/*
* discovery starts from the top because kernel will
* refuse to send packets > current iface mtu.
* this saves us some time and network bw.
*/
onwire_len = max_mtu_len;
restart:
/*
* prevent a race when interface mtu is changed _exactly_ during
* the discovery process and it's complex to detect. Easier
* to wait the next loop.
* 30 is not an arbitrary value. To bisect from 576 to 128000 doesn't
* take more than 18/19 steps.
*/
if (failsafe == 30) {
log_err(knet_h, KNET_SUB_PMTUD,
"Aborting PMTUD process: Too many attempts. MTU might have changed during discovery.");
return -1;
} else {
failsafe++;
}
data_len = onwire_len - overhead_len;
if (knet_h->crypto_instance) {
if (knet_h->sec_block_size) {
pad_len = knet_h->sec_block_size - (data_len % knet_h->sec_block_size);
if (pad_len == knet_h->sec_block_size) {
pad_len = 0;
}
data_len = data_len + pad_len;
}
data_len = data_len + (knet_h->sec_hash_size + knet_h->sec_salt_size + knet_h->sec_block_size);
if (knet_h->sec_block_size) {
while (data_len + overhead_len >= max_mtu_len) {
data_len = data_len - knet_h->sec_block_size;
}
}
if (dst_link->last_bad_mtu) {
while (data_len + overhead_len >= dst_link->last_bad_mtu) {
data_len = data_len - (knet_h->sec_hash_size + knet_h->sec_salt_size + knet_h->sec_block_size);
}
}
if (data_len < (knet_h->sec_hash_size + knet_h->sec_salt_size + knet_h->sec_block_size) + 1) {
log_debug(knet_h, KNET_SUB_PMTUD, "Aborting PMTUD process: link mtu smaller than crypto header detected (link might have been disconnected)");
return -1;
}
onwire_len = data_len + overhead_len;
knet_h->pmtudbuf->khp_pmtud_size = onwire_len;
if (crypto_encrypt_and_sign(knet_h,
(const unsigned char *)knet_h->pmtudbuf,
data_len - (knet_h->sec_hash_size + knet_h->sec_salt_size + knet_h->sec_block_size),
knet_h->pmtudbuf_crypt,
(ssize_t *)&data_len) < 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to crypto pmtud packet");
return -1;
}
outbuf = knet_h->pmtudbuf_crypt;
knet_h->stats_extra.tx_crypt_pmtu_packets++;
} else {
knet_h->pmtudbuf->khp_pmtud_size = onwire_len;
}
/* link has gone down, aborting pmtud */
if (dst_link->status.connected != 1) {
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD detected host (%u) link (%u) has been disconnected", dst_host->host_id, dst_link->link_id);
return -1;
}
if (dst_link->transport_connected != 1) {
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD detected host (%u) link (%u) has been disconnected", dst_host->host_id, dst_link->link_id);
return -1;
}
if (pthread_mutex_lock(&knet_h->pmtud_mutex) != 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get mutex lock");
return -1;
}
if (knet_h->pmtud_abort) {
pthread_mutex_unlock(&knet_h->pmtud_mutex);
errno = EDEADLK;
return -1;
}
savederrno = pthread_mutex_lock(&knet_h->tx_mutex);
if (savederrno) {
log_err(knet_h, KNET_SUB_PMTUD, "Unable to get TX mutex lock: %s", strerror(savederrno));
return -1;
}
retry:
len = sendto(dst_link->outsock, outbuf, data_len,
MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) &dst_link->dst_addr,
sizeof(struct sockaddr_storage));
savederrno = errno;
/*
* we cannot hold a lock on kmtu_mutex between resetting
* knet_h->kernel_mtu here and below where it's used.
* use_kernel_mtu tells us if the knet_h->kernel_mtu was
* set to 0 and we can trust its value later.
*/
use_kernel_mtu = 0;
if (pthread_mutex_lock(&knet_h->kmtu_mutex) == 0) {
use_kernel_mtu = 1;
knet_h->kernel_mtu = 0;
pthread_mutex_unlock(&knet_h->kmtu_mutex);
}
kernel_mtu = 0;
err = transport_tx_sock_error(knet_h, dst_link->transport_type, dst_link->outsock, len, savederrno);
switch(err) {
case -1: /* unrecoverable error */
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to send pmtu packet (sendto): %d %s", savederrno, strerror(savederrno));
pthread_mutex_unlock(&knet_h->tx_mutex);
pthread_mutex_unlock(&knet_h->pmtud_mutex);
dst_link->status.stats.tx_pmtu_errors++;
return -1;
case 0: /* ignore error and continue */
break;
case 1: /* retry to send those same data */
dst_link->status.stats.tx_pmtu_retries++;
goto retry;
break;
}
pthread_mutex_unlock(&knet_h->tx_mutex);
if (len != (ssize_t )data_len) {
if (savederrno == EMSGSIZE) {
/*
* we cannot hold a lock on kmtu_mutex between resetting
* knet_h->kernel_mtu and here.
* use_kernel_mtu tells us if the knet_h->kernel_mtu was
* set to 0 previously and we can trust its value now.
*/
if (use_kernel_mtu) {
use_kernel_mtu = 0;
if (pthread_mutex_lock(&knet_h->kmtu_mutex) == 0) {
kernel_mtu = knet_h->kernel_mtu;
pthread_mutex_unlock(&knet_h->kmtu_mutex);
}
}
if (kernel_mtu > 0) {
dst_link->last_bad_mtu = kernel_mtu + 1;
} else {
dst_link->last_bad_mtu = onwire_len;
}
} else {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to send pmtu packet len: %zu err: %s", onwire_len, strerror(savederrno));
}
} else {
dst_link->last_sent_mtu = onwire_len;
dst_link->last_recv_mtu = 0;
dst_link->status.stats.tx_pmtu_packets++;
dst_link->status.stats.tx_pmtu_bytes += data_len;
if (clock_gettime(CLOCK_REALTIME, &ts) < 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get current time: %s", strerror(errno));
pthread_mutex_unlock(&knet_h->pmtud_mutex);
return -1;
}
/*
* set PMTUd reply timeout to match pong_timeout on a given link
*
* math: internally pong_timeout is expressed in microseconds, while
* the public API exports milliseconds. So careful with the 0's here.
* the loop is necessary because we are grabbing the current time just above
* and add values to it that could overflow into seconds.
*/
if (pthread_mutex_lock(&knet_h->backoff_mutex)) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get backoff_mutex");
pthread_mutex_unlock(&knet_h->pmtud_mutex);
return -1;
}
if (knet_h->crypto_instance) {
/*
* crypto, under pressure, is a royal PITA
*/
pong_timeout_adj_tmp = dst_link->pong_timeout_adj * 2;
} else {
pong_timeout_adj_tmp = dst_link->pong_timeout_adj;
}
ts.tv_sec += pong_timeout_adj_tmp / 1000000;
ts.tv_nsec += (((pong_timeout_adj_tmp) % 1000000) * 1000);
while (ts.tv_nsec > 1000000000) {
ts.tv_sec += 1;
ts.tv_nsec -= 1000000000;
}
pthread_mutex_unlock(&knet_h->backoff_mutex);
knet_h->pmtud_waiting = 1;
ret = pthread_cond_timedwait(&knet_h->pmtud_cond, &knet_h->pmtud_mutex, &ts);
knet_h->pmtud_waiting = 0;
if (knet_h->pmtud_abort) {
pthread_mutex_unlock(&knet_h->pmtud_mutex);
errno = EDEADLK;
return -1;
}
if (shutdown_in_progress(knet_h)) {
pthread_mutex_unlock(&knet_h->pmtud_mutex);
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD aborted. shutdown in progress");
return -1;
}
if (ret) {
if (ret == ETIMEDOUT) {
if (!warn_once) {
log_warn(knet_h, KNET_SUB_PMTUD,
"possible MTU misconfiguration detected. "
"kernel is reporting MTU: %u bytes for "
"host %u link %u but the other node is "
"not acknowledging packets of this size. ",
dst_link->last_sent_mtu,
dst_host->host_id,
dst_link->link_id);
log_warn(knet_h, KNET_SUB_PMTUD,
"This can be caused by this node interface MTU "
"too big or a network device that does not "
"support or has been misconfigured to manage MTU "
"of this size, or packet loss. knet will continue "
"to run but performances might be affected.");
warn_once = 1;
}
} else {
pthread_mutex_unlock(&knet_h->pmtud_mutex);
if (mutex_retry_limit == 3) {
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD aborted, unable to get mutex lock");
return -1;
}
mutex_retry_limit++;
goto restart;
}
}
if ((dst_link->last_recv_mtu != onwire_len) || (ret)) {
dst_link->last_bad_mtu = onwire_len;
} else {
int found_mtu = 0;
if (knet_h->sec_block_size) {
if ((onwire_len + knet_h->sec_block_size >= max_mtu_len) ||
((dst_link->last_bad_mtu) && (dst_link->last_bad_mtu <= (onwire_len + knet_h->sec_block_size)))) {
found_mtu = 1;
}
} else {
if ((onwire_len == max_mtu_len) ||
((dst_link->last_bad_mtu) && (dst_link->last_bad_mtu == (onwire_len + 1))) ||
(dst_link->last_bad_mtu == dst_link->last_good_mtu)) {
found_mtu = 1;
}
}
if (found_mtu) {
/*
* account for IP overhead, knet headers and crypto in PMTU calculation
*/
dst_link->status.mtu = onwire_len - dst_link->status.proto_overhead;
pthread_mutex_unlock(&knet_h->pmtud_mutex);
return 0;
}
dst_link->last_good_mtu = onwire_len;
}
}
if (kernel_mtu) {
onwire_len = kernel_mtu;
} else {
onwire_len = (dst_link->last_good_mtu + dst_link->last_bad_mtu) / 2;
}
pthread_mutex_unlock(&knet_h->pmtud_mutex);
goto restart;
}
static int _handle_check_pmtud(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_link *dst_link, unsigned int *min_mtu, int force_run)
{
uint8_t saved_valid_pmtud;
unsigned int saved_pmtud;
struct timespec clock_now;
unsigned long long diff_pmtud, interval;
if (!force_run) {
interval = knet_h->pmtud_interval * 1000000000llu; /* nanoseconds */
if (clock_gettime(CLOCK_MONOTONIC, &clock_now) != 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get monotonic clock");
return 0;
}
timespec_diff(dst_link->pmtud_last, clock_now, &diff_pmtud);
if (diff_pmtud < interval) {
*min_mtu = dst_link->status.mtu;
return dst_link->has_valid_mtu;
}
}
switch (dst_link->dst_addr.ss_family) {
case AF_INET6:
dst_link->status.proto_overhead = KNET_PMTUD_OVERHEAD_V6 + dst_link->proto_overhead + KNET_HEADER_ALL_SIZE + knet_h->sec_header_size;
break;
case AF_INET:
dst_link->status.proto_overhead = KNET_PMTUD_OVERHEAD_V4 + dst_link->proto_overhead + KNET_HEADER_ALL_SIZE + knet_h->sec_header_size;
break;
}
saved_pmtud = dst_link->status.mtu;
saved_valid_pmtud = dst_link->has_valid_mtu;
log_debug(knet_h, KNET_SUB_PMTUD, "Starting PMTUD for host: %u link: %u", dst_host->host_id, dst_link->link_id);
errno = 0;
if (_handle_check_link_pmtud(knet_h, dst_host, dst_link) < 0) {
if (errno == EDEADLK) {
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD for host: %u link: %u has been rescheduled", dst_host->host_id, dst_link->link_id);
dst_link->status.mtu = saved_pmtud;
dst_link->has_valid_mtu = saved_valid_pmtud;
errno = EDEADLK;
return dst_link->has_valid_mtu;
}
dst_link->has_valid_mtu = 0;
} else {
dst_link->has_valid_mtu = 1;
switch (dst_link->dst_addr.ss_family) {
case AF_INET6:
if (((dst_link->status.mtu + dst_link->status.proto_overhead) < KNET_PMTUD_MIN_MTU_V6) ||
((dst_link->status.mtu + dst_link->status.proto_overhead) > KNET_PMTUD_SIZE_V6)) {
log_debug(knet_h, KNET_SUB_PMTUD,
"PMTUD detected an IPv6 MTU out of bound value (%u) for host: %u link: %u.",
dst_link->status.mtu + dst_link->status.proto_overhead, dst_host->host_id, dst_link->link_id);
dst_link->has_valid_mtu = 0;
}
break;
case AF_INET:
if (((dst_link->status.mtu + dst_link->status.proto_overhead) < KNET_PMTUD_MIN_MTU_V4) ||
((dst_link->status.mtu + dst_link->status.proto_overhead) > KNET_PMTUD_SIZE_V4)) {
log_debug(knet_h, KNET_SUB_PMTUD,
"PMTUD detected an IPv4 MTU out of bound value (%u) for host: %u link: %u.",
dst_link->status.mtu + dst_link->status.proto_overhead, dst_host->host_id, dst_link->link_id);
dst_link->has_valid_mtu = 0;
}
break;
}
if (dst_link->has_valid_mtu) {
if ((saved_pmtud) && (saved_pmtud != dst_link->status.mtu)) {
log_info(knet_h, KNET_SUB_PMTUD, "PMTUD link change for host: %u link: %u from %u to %u",
dst_host->host_id, dst_link->link_id, saved_pmtud, dst_link->status.mtu);
}
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUD completed for host: %u link: %u current link mtu: %u",
dst_host->host_id, dst_link->link_id, dst_link->status.mtu);
if (dst_link->status.mtu < *min_mtu) {
*min_mtu = dst_link->status.mtu;
}
/*
* set pmtud_last, if we can, after we are done with the PMTUd process
* because it can take a very long time.
*/
dst_link->pmtud_last = clock_now;
if (!clock_gettime(CLOCK_MONOTONIC, &clock_now)) {
dst_link->pmtud_last = clock_now;
}
}
}
if (saved_valid_pmtud != dst_link->has_valid_mtu) {
_host_dstcache_update_sync(knet_h, dst_host);
}
return dst_link->has_valid_mtu;
}
void *_handle_pmtud_link_thread(void *data)
{
knet_handle_t knet_h = (knet_handle_t) data;
struct knet_host *dst_host;
struct knet_link *dst_link;
int link_idx;
unsigned int min_mtu, have_mtu;
unsigned int lower_mtu;
int link_has_mtu;
int force_run = 0;
set_thread_status(knet_h, KNET_THREAD_PMTUD, KNET_THREAD_STARTED);
knet_h->data_mtu = KNET_PMTUD_MIN_MTU_V4 - KNET_HEADER_ALL_SIZE - knet_h->sec_header_size;
/* preparing pmtu buffer */
knet_h->pmtudbuf->kh_version = KNET_HEADER_VERSION;
knet_h->pmtudbuf->kh_type = KNET_HEADER_TYPE_PMTUD;
knet_h->pmtudbuf->kh_node = htons(knet_h->host_id);
while (!shutdown_in_progress(knet_h)) {
- usleep(KNET_THREADS_TIMERES);
+ usleep(knet_h->threads_timer_res);
if (pthread_mutex_lock(&knet_h->pmtud_mutex) != 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get mutex lock");
continue;
}
knet_h->pmtud_abort = 0;
knet_h->pmtud_running = 1;
force_run = knet_h->pmtud_forcerun;
knet_h->pmtud_forcerun = 0;
pthread_mutex_unlock(&knet_h->pmtud_mutex);
if (force_run) {
log_debug(knet_h, KNET_SUB_PMTUD, "PMTUd request to rerun has been received");
}
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get read lock");
continue;
}
lower_mtu = KNET_PMTUD_SIZE_V4;
min_mtu = KNET_PMTUD_SIZE_V4 - KNET_HEADER_ALL_SIZE - knet_h->sec_header_size;
have_mtu = 0;
for (dst_host = knet_h->host_head; dst_host != NULL; dst_host = dst_host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
dst_link = &dst_host->link[link_idx];
if ((dst_link->status.enabled != 1) ||
(dst_link->status.connected != 1) ||
(dst_host->link[link_idx].transport_type == KNET_TRANSPORT_LOOPBACK) ||
(!dst_link->last_ping_size) ||
((dst_link->dynamic == KNET_LINK_DYNIP) &&
(dst_link->status.dynconnected != 1)))
continue;
link_has_mtu = _handle_check_pmtud(knet_h, dst_host, dst_link, &min_mtu, force_run);
if (errno == EDEADLK) {
goto out_unlock;
}
if (link_has_mtu) {
have_mtu = 1;
if (min_mtu < lower_mtu) {
lower_mtu = min_mtu;
}
}
}
}
if (have_mtu) {
if (knet_h->data_mtu != lower_mtu) {
knet_h->data_mtu = lower_mtu;
log_info(knet_h, KNET_SUB_PMTUD, "Global data MTU changed to: %u", knet_h->data_mtu);
if (knet_h->pmtud_notify_fn) {
knet_h->pmtud_notify_fn(knet_h->pmtud_notify_fn_private_data,
knet_h->data_mtu);
}
}
}
out_unlock:
pthread_rwlock_unlock(&knet_h->global_rwlock);
if (pthread_mutex_lock(&knet_h->pmtud_mutex) != 0) {
log_debug(knet_h, KNET_SUB_PMTUD, "Unable to get mutex lock");
} else {
knet_h->pmtud_running = 0;
pthread_mutex_unlock(&knet_h->pmtud_mutex);
}
}
set_thread_status(knet_h, KNET_THREAD_PMTUD, KNET_THREAD_STOPPED);
return NULL;
}
diff --git a/libknet/threads_rx.c b/libknet/threads_rx.c
index d6244e13..a012e191 100644
--- a/libknet/threads_rx.c
+++ b/libknet/threads_rx.c
@@ -1,852 +1,852 @@
/*
* Copyright (C) 2012-2018 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 <errno.h>
#include <sys/uio.h>
#include <pthread.h>
#include "compat.h"
#include "compress.h"
#include "crypto.h"
#include "host.h"
#include "links.h"
#include "logging.h"
#include "transports.h"
#include "transport_common.h"
#include "threads_common.h"
#include "threads_heartbeat.h"
#include "threads_rx.h"
#include "netutils.h"
/*
* 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_seq_num, 1, 0)) {
errno = ETIME;
return -1;
}
/*
* register the pckt as seen
*/
_seq_num_set(src_host, 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_RX, "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, int sockfd, const struct knet_mmsghdr *msg)
{
int err = 0, savederrno = 0;
ssize_t outlen;
struct knet_host *src_host;
struct knet_link *src_link;
unsigned long long latency_last;
knet_node_id_t dst_host_ids[KNET_MAX_HOST];
size_t dst_host_ids_entries = 0;
int bcast = 1;
int was_decrypted = 0;
uint64_t crypt_time = 0;
struct timespec recvtime;
struct knet_header *inbuf = msg->msg_hdr.msg_iov->iov_base;
unsigned char *outbuf = (unsigned char *)msg->msg_hdr.msg_iov->iov_base;
ssize_t len = msg->msg_len;
struct knet_hostinfo *knet_hostinfo;
struct iovec iov_out[1];
int8_t channel;
struct sockaddr_storage pckt_src;
seq_num_t recv_seq_num;
int wipe_bufs = 0;
if (knet_h->crypto_instance) {
struct timespec start_time;
struct timespec end_time;
clock_gettime(CLOCK_MONOTONIC, &start_time);
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_RX, "Unable to decrypt/auth packet");
return;
}
clock_gettime(CLOCK_MONOTONIC, &end_time);
timespec_diff(start_time, end_time, &crypt_time);
if (crypt_time < knet_h->stats.rx_crypt_time_min) {
knet_h->stats.rx_crypt_time_min = crypt_time;
}
if (crypt_time > knet_h->stats.rx_crypt_time_max) {
knet_h->stats.rx_crypt_time_max = crypt_time;
}
len = outlen;
inbuf = (struct knet_header *)knet_h->recv_from_links_buf_decrypt;
was_decrypted++;
}
if (len < (ssize_t)(KNET_HEADER_SIZE + 1)) {
log_debug(knet_h, KNET_SUB_RX, "Packet is too short: %ld", (long)len);
return;
}
if (inbuf->kh_version != KNET_HEADER_VERSION) {
log_debug(knet_h, KNET_SUB_RX, "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_RX, "Unable to find source host for this packet");
return;
}
src_link = NULL;
src_link = src_host->link +
(inbuf->khp_ping_link % KNET_MAX_LINK);
if ((inbuf->kh_type & KNET_HEADER_TYPE_PMSK) != 0) {
if (src_link->dynamic == KNET_LINK_DYNIP) {
/*
* cpyaddrport will only copy address and port of the incoming
* packet and strip extra bits such as flow and scopeid
*/
cpyaddrport(&pckt_src, msg->msg_hdr.msg_name);
if (cmpaddr(&src_link->dst_addr, sockaddr_len(&src_link->dst_addr),
&pckt_src, sockaddr_len(&pckt_src)) != 0) {
log_debug(knet_h, KNET_SUB_RX, "host: %u link: %u appears to have changed ip address",
src_host->host_id, src_link->link_id);
memmove(&src_link->dst_addr, &pckt_src, sizeof(struct sockaddr_storage));
if (knet_addrtostr(&src_link->dst_addr, sockaddr_len(msg->msg_hdr.msg_name),
src_link->status.dst_ipaddr, KNET_MAX_HOST_LEN,
src_link->status.dst_port, KNET_MAX_PORT_LEN) != 0) {
log_debug(knet_h, KNET_SUB_RX, "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, "??");
} else {
log_info(knet_h, KNET_SUB_RX,
"host: %u link: %u new connection established from: %s %s",
src_host->host_id, src_link->link_id,
src_link->status.dst_ipaddr, src_link->status.dst_port);
}
}
/*
* transport has already accepted the connection here
* otherwise we would not be receiving packets
*/
transport_link_dyn_connect(knet_h, sockfd, src_link);
}
}
switch (inbuf->kh_type) {
case KNET_HEADER_TYPE_HOST_INFO:
case KNET_HEADER_TYPE_DATA:
/*
* TODO: should we accept data even if we can't reply to the other node?
* how would that work with SCTP and guaranteed delivery?
*/
if (!src_host->status.reachable) {
log_debug(knet_h, KNET_SUB_RX, "Source host %u not reachable yet", src_host->host_id);
//return;
}
inbuf->khp_data_seq_num = ntohs(inbuf->khp_data_seq_num);
channel = inbuf->khp_data_channel;
src_host->got_data = 1;
if (src_link) {
src_link->status.stats.rx_data_packets++;
src_link->status.stats.rx_data_bytes += len;
}
if (!_seq_num_lookup(src_host, inbuf->khp_data_seq_num, 0, 0)) {
if (src_host->link_handler_policy != KNET_LINK_POLICY_ACTIVE) {
log_debug(knet_h, KNET_SUB_RX, "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->khp_data_compress) {
ssize_t decmp_outlen = KNET_DATABUFSIZE_COMPRESS;
struct timespec start_time;
struct timespec end_time;
uint64_t compress_time;
clock_gettime(CLOCK_MONOTONIC, &start_time);
err = decompress(knet_h, inbuf->khp_data_compress,
(const unsigned char *)inbuf->khp_data_userdata,
len - KNET_HEADER_DATA_SIZE,
knet_h->recv_from_links_buf_decompress,
&decmp_outlen);
if (!err) {
/* Collect stats */
clock_gettime(CLOCK_MONOTONIC, &end_time);
timespec_diff(start_time, end_time, &compress_time);
if (compress_time < knet_h->stats.rx_compress_time_min) {
knet_h->stats.rx_compress_time_min = compress_time;
}
if (compress_time > knet_h->stats.rx_compress_time_max) {
knet_h->stats.rx_compress_time_max = compress_time;
}
knet_h->stats.rx_compress_time_ave =
(knet_h->stats.rx_compress_time_ave * knet_h->stats.rx_compressed_packets +
compress_time) / (knet_h->stats.rx_compressed_packets+1);
knet_h->stats.rx_compressed_packets++;
knet_h->stats.rx_compressed_original_bytes += decmp_outlen;
knet_h->stats.rx_compressed_size_bytes += len - KNET_HEADER_SIZE;
memmove(inbuf->khp_data_userdata, knet_h->recv_from_links_buf_decompress, decmp_outlen);
len = decmp_outlen + KNET_HEADER_DATA_SIZE;
} else {
knet_h->stats.rx_failed_to_decompress++;
log_warn(knet_h, KNET_SUB_COMPRESS, "Unable to decompress packet (%d): %s",
err, strerror(errno));
return;
}
}
if (inbuf->kh_type == KNET_HEADER_TYPE_DATA) {
if (knet_h->enabled != 1) /* data forward is disabled */
break;
/* Only update the crypto overhead for data packets. Mainly to be
consistent with TX */
knet_h->stats.rx_crypt_time_ave =
(knet_h->stats.rx_crypt_time_ave * knet_h->stats.rx_crypt_packets +
crypt_time) / (knet_h->stats.rx_crypt_packets+1);
knet_h->stats.rx_crypt_packets++;
if (knet_h->dst_host_filter_fn) {
size_t 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_RX, "Error from dst_host_filter_fn: %d", bcast);
return;
}
if ((!bcast) && (!dst_host_ids_entries)) {
log_debug(knet_h, KNET_SUB_RX, "Message is unicast but no dst_host_ids_entries");
return;
}
/* check if we are dst for this packet */
if (!bcast) {
if (dst_host_ids_entries > KNET_MAX_HOST) {
log_debug(knet_h, KNET_SUB_RX, "dst_host_filter_fn returned too many destinations");
return;
}
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_RX, "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_RX,
"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 ((size_t)outlen == iov_out[0].iov_len) {
_seq_num_set(src_host, 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, inbuf->khp_data_seq_num, 0, 0)) {
return;
}
_seq_num_set(src_host, inbuf->khp_data_seq_num, 0);
switch(knet_hostinfo->khi_type) {
case KNET_HOSTINFO_TYPE_LINK_UP_DOWN:
break;
case KNET_HOSTINFO_TYPE_LINK_TABLE:
break;
default:
log_warn(knet_h, KNET_SUB_RX, "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);
recv_seq_num = ntohs(inbuf->khp_ping_seq_num);
src_link->status.stats.rx_ping_packets++;
src_link->status.stats.rx_ping_bytes += len;
wipe_bufs = 0;
if (!inbuf->khp_ping_timed) {
/*
* we might be receiving this message from all links, but we want
* to process it only the first time
*/
if (recv_seq_num != src_host->untimed_rx_seq_num) {
/*
* cache the untimed seq num
*/
src_host->untimed_rx_seq_num = recv_seq_num;
/*
* if the host has received data in between
* untimed ping, then we don't need to wipe the bufs
*/
if (src_host->got_data) {
src_host->got_data = 0;
wipe_bufs = 0;
} else {
wipe_bufs = 1;
}
}
_seq_num_lookup(src_host, recv_seq_num, 0, wipe_bufs);
} else {
/*
* pings always arrives in bursts over all the link
* catch the first of them to cache the seq num and
* avoid duplicate processing
*/
if (recv_seq_num != src_host->timed_rx_seq_num) {
src_host->timed_rx_seq_num = recv_seq_num;
if (recv_seq_num == 0) {
_seq_num_lookup(src_host, recv_seq_num, 0, 1);
}
}
}
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(knet_h,
(const unsigned char *)inbuf,
outlen,
knet_h->recv_from_links_buf_crypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_RX, "Unable to encrypt pong packet");
break;
}
outbuf = knet_h->recv_from_links_buf_crypt;
knet_h->stats_extra.tx_crypt_pong_packets++;
}
retry_pong:
len = sendto(src_link->outsock, outbuf, outlen, MSG_DONTWAIT | MSG_NOSIGNAL,
(struct sockaddr *) &src_link->dst_addr,
sizeof(struct sockaddr_storage));
savederrno = errno;
if (len != outlen) {
err = transport_tx_sock_error(knet_h, src_link->transport_type, src_link->outsock, len, savederrno);
switch(err) {
case -1: /* unrecoverable error */
log_debug(knet_h, KNET_SUB_RX,
"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);
src_link->status.stats.tx_pong_errors++;
break;
case 0: /* ignore error and continue */
break;
case 1: /* retry to send those same data */
src_link->status.stats.tx_pong_retries++;
goto retry_pong;
break;
}
}
src_link->status.stats.tx_pong_packets++;
src_link->status.stats.tx_pong_bytes += outlen;
break;
case KNET_HEADER_TYPE_PONG:
src_link->status.stats.rx_pong_packets++;
src_link->status.stats.rx_pong_bytes += len;
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_adj) {
if (!src_link->status.connected) {
if (src_link->received_pong >= src_link->pong_count) {
log_info(knet_h, KNET_SUB_RX, "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_RX, "host: %u link: %u received pong: %u",
src_host->host_id, src_link->link_id, src_link->received_pong);
}
}
}
/* Calculate latency stats */
if (src_link->status.latency > src_link->status.stats.latency_max) {
src_link->status.stats.latency_max = src_link->status.latency;
}
if (src_link->status.latency < src_link->status.stats.latency_min) {
src_link->status.stats.latency_min = src_link->status.latency;
}
src_link->status.stats.latency_ave =
(src_link->status.stats.latency_ave * src_link->status.stats.latency_samples +
src_link->status.latency) / (src_link->status.stats.latency_samples+1);
src_link->status.stats.latency_samples++;
break;
case KNET_HEADER_TYPE_PMTUD:
src_link->status.stats.rx_pmtu_packets++;
src_link->status.stats.rx_pmtu_bytes += len;
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,
outlen,
knet_h->recv_from_links_buf_crypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_RX, "Unable to encrypt PMTUd reply packet");
break;
}
outbuf = knet_h->recv_from_links_buf_crypt;
knet_h->stats_extra.tx_crypt_pmtu_reply_packets++;
}
savederrno = pthread_mutex_lock(&knet_h->tx_mutex);
if (savederrno) {
log_err(knet_h, KNET_SUB_RX, "Unable to get TX mutex lock: %s", strerror(savederrno));
goto out_pmtud;
}
retry_pmtud:
len = sendto(src_link->outsock, outbuf, outlen, MSG_DONTWAIT | MSG_NOSIGNAL,
(struct sockaddr *) &src_link->dst_addr,
sizeof(struct sockaddr_storage));
savederrno = errno;
if (len != outlen) {
err = transport_tx_sock_error(knet_h, src_link->transport_type, src_link->outsock, len, savederrno);
switch(err) {
case -1: /* unrecoverable error */
log_debug(knet_h, KNET_SUB_RX,
"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);
src_link->status.stats.tx_pmtu_errors++;
break;
case 0: /* ignore error and continue */
src_link->status.stats.tx_pmtu_errors++;
break;
case 1: /* retry to send those same data */
src_link->status.stats.tx_pmtu_retries++;
goto retry_pmtud;
break;
}
}
pthread_mutex_unlock(&knet_h->tx_mutex);
out_pmtud:
break;
case KNET_HEADER_TYPE_PMTUD_REPLY:
src_link->status.stats.rx_pmtu_packets++;
src_link->status.stats.rx_pmtu_bytes += len;
if (pthread_mutex_lock(&knet_h->pmtud_mutex) != 0) {
log_debug(knet_h, KNET_SUB_RX, "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 knet_mmsghdr *msg)
{
int err, savederrno;
int i, msg_recv, transport;
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_RX, "Unable to get global read lock");
return;
}
if (_is_valid_fd(knet_h, sockfd) < 1) {
/*
* this is normal if a fd got an event and before we grab the read lock
* and the link is removed by another thread
*/
goto exit_unlock;
}
transport = knet_h->knet_transport_fd_tracker[sockfd].transport;
/*
* reset msg_namelen to buffer size because after recvmmsg
* each msg_namelen will contain sizeof sockaddr_in or sockaddr_in6
*/
for (i = 0; i < PCKT_RX_BUFS; i++) {
msg[i].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage);
}
msg_recv = _recvmmsg(sockfd, &msg[0], PCKT_RX_BUFS, MSG_DONTWAIT | MSG_NOSIGNAL);
savederrno = errno;
/*
* WARNING: man page for recvmmsg is wrong. Kernel implementation here:
* recvmmsg can return:
* -1 on error
* 0 if the previous run of recvmmsg recorded an error on the socket
* N number of messages (see exception below).
*
* If there is an error from recvmsg after receiving a frame or more, the recvmmsg
* loop is interrupted, error recorded in the socket (getsockopt(SO_ERROR) and
* it will be visibile in the next run.
*
* Need to be careful how we handle errors at this stage.
*
* error messages need to be handled on a per transport/protocol base
* at this point we have different layers of error handling
* - msg_recv < 0 -> error from this run
* msg_recv = 0 -> error from previous run and error on socket needs to be cleared
* - per-transport message data
* example: msg[i].msg_hdr.msg_flags & MSG_NOTIFICATION or msg_len for SCTP == EOF,
* but for UDP it is perfectly legal to receive a 0 bytes message.. go figure
* - NOTE: on SCTP MSG_NOTIFICATION we get msg_recv == PCKT_FRAG_MAX messages and no
* errno set. That means the error api needs to be able to abort the loop below.
*/
if (msg_recv <= 0) {
transport_rx_sock_error(knet_h, transport, sockfd, msg_recv, savederrno);
goto exit_unlock;
}
for (i = 0; i < msg_recv; i++) {
err = transport_rx_is_data(knet_h, transport, sockfd, &msg[i]);
/*
* TODO: make this section silent once we are confident
* all protocols packet handlers are good
*/
switch(err) {
case -1: /* on error */
log_debug(knet_h, KNET_SUB_RX, "Transport reported error parsing packet");
goto exit_unlock;
break;
case 0: /* packet is not data and we should continue the packet process loop */
log_debug(knet_h, KNET_SUB_RX, "Transport reported no data, continue");
break;
case 1: /* packet is not data and we should STOP the packet process loop */
log_debug(knet_h, KNET_SUB_RX, "Transport reported no data, stop");
goto exit_unlock;
break;
case 2: /* packet is data and should be parsed as such */
_parse_recv_from_links(knet_h, sockfd, &msg[i]);
break;
}
}
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_RX_BUFS];
struct knet_mmsghdr msg[PCKT_RX_BUFS];
struct iovec iov_in[PCKT_RX_BUFS];
set_thread_status(knet_h, KNET_THREAD_RX, KNET_THREAD_STARTED);
memset(&msg, 0, sizeof(msg));
for (i = 0; i < PCKT_RX_BUFS; 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, KNET_THREADS_TIMERES / 1000);
+ nev = epoll_wait(knet_h->recv_from_links_epollfd, events, KNET_EPOLL_MAX_EVENTS, knet_h->threads_timer_res / 1000);
/*
* we use timeout to detect if thread is shutting down
*/
if (nev == 0) {
continue;
}
for (i = 0; i < nev; i++) {
_handle_recv_from_links(knet_h, events[i].data.fd, msg);
}
}
set_thread_status(knet_h, KNET_THREAD_RX, KNET_THREAD_STOPPED);
return NULL;
}
diff --git a/libknet/threads_tx.c b/libknet/threads_tx.c
index 489168da..774ef9d3 100644
--- a/libknet/threads_tx.c
+++ b/libknet/threads_tx.c
@@ -1,751 +1,751 @@
/*
* Copyright (C) 2012-2018 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 <math.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <sys/uio.h>
#include <errno.h>
#include "compat.h"
#include "compress.h"
#include "crypto.h"
#include "host.h"
#include "link.h"
#include "logging.h"
#include "transports.h"
#include "transport_common.h"
#include "threads_common.h"
#include "threads_heartbeat.h"
#include "threads_tx.h"
#include "netutils.h"
/*
* SEND
*/
static int _dispatch_to_links(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_mmsghdr *msg, int msgs_to_send)
{
int link_idx, msg_idx, sent_msgs, prev_sent, progress;
int err = 0, savederrno = 0;
unsigned int i;
struct knet_mmsghdr *cur;
struct knet_link *cur_link;
for (link_idx = 0; link_idx < dst_host->active_link_entries; link_idx++) {
sent_msgs = 0;
prev_sent = 0;
progress = 1;
cur_link = &dst_host->link[dst_host->active_links[link_idx]];
if (cur_link->transport_type == KNET_TRANSPORT_LOOPBACK) {
continue;
}
msg_idx = 0;
while (msg_idx < msgs_to_send) {
msg[msg_idx].msg_hdr.msg_name = &cur_link->dst_addr;
/* Cast for Linux/BSD compatibility */
for (i=0; i<(unsigned int)msg[msg_idx].msg_hdr.msg_iovlen; i++) {
cur_link->status.stats.tx_data_bytes += msg[msg_idx].msg_hdr.msg_iov[i].iov_len;
}
cur_link->status.stats.tx_data_packets++;
msg_idx++;
}
retry:
cur = &msg[prev_sent];
sent_msgs = _sendmmsg(dst_host->link[dst_host->active_links[link_idx]].outsock,
&cur[0], msgs_to_send - prev_sent, MSG_DONTWAIT | MSG_NOSIGNAL);
savederrno = errno;
err = transport_tx_sock_error(knet_h, dst_host->link[dst_host->active_links[link_idx]].transport_type, dst_host->link[dst_host->active_links[link_idx]].outsock, sent_msgs, savederrno);
switch(err) {
case -1: /* unrecoverable error */
cur_link->status.stats.tx_data_errors++;
goto out_unlock;
break;
case 0: /* ignore error and continue */
break;
case 1: /* retry to send those same data */
cur_link->status.stats.tx_data_retries++;
goto retry;
break;
}
prev_sent = prev_sent + sent_msgs;
if ((sent_msgs >= 0) && (prev_sent < msgs_to_send)) {
if ((sent_msgs) || (progress)) {
if (sent_msgs) {
progress = 1;
} else {
progress = 0;
}
#ifdef DEBUG
log_debug(knet_h, KNET_SUB_TX, "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);
#endif
goto retry;
}
if (!progress) {
savederrno = EAGAIN;
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, size_t inlen, int8_t channel, int is_sync)
{
size_t outlen, frag_len;
struct knet_host *dst_host;
knet_node_id_t dst_host_ids_temp[KNET_MAX_HOST];
size_t dst_host_ids_entries_temp = 0;
knet_node_id_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][2];
int iovcnt_out = 2;
uint8_t frag_idx;
unsigned int temp_data_mtu;
size_t host_idx;
int send_mcast = 0;
struct knet_header *inbuf;
int savederrno = 0;
int err = 0;
seq_num_t tx_seq_num;
struct knet_mmsghdr msg[PCKT_FRAG_MAX];
int msgs_to_send, msg_idx;
unsigned int i;
int j;
int send_local = 0;
int data_compressed = 0;
size_t uncrypted_frag_size;
inbuf = knet_h->recv_from_sock_buf;
if ((knet_h->enabled != 1) &&
(inbuf->kh_type != KNET_HEADER_TYPE_HOST_INFO)) { /* data forward is disabled */
log_debug(knet_h, KNET_SUB_TX, "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_TX, "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_TX, "Message is unicast but no dst_host_ids_entries");
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
if ((!bcast) &&
(dst_host_ids_entries_temp > KNET_MAX_HOST)) {
log_debug(knet_h, KNET_SUB_TX, "dst_host_filter_fn returned too many destinations");
savederrno = EINVAL;
err = -1;
goto out_unlock;
}
}
/* Send to localhost if appropriate and enabled */
if (knet_h->has_loop_link) {
send_local = 0;
if (bcast) {
send_local = 1;
} else {
for (i=0; i< dst_host_ids_entries_temp; i++) {
if (dst_host_ids_temp[i] == knet_h->host_id) {
send_local = 1;
}
}
}
if (send_local) {
const unsigned char *buf = inbuf->khp_data_userdata;
ssize_t buflen = inlen;
struct knet_link *local_link;
local_link = knet_h->host_index[knet_h->host_id]->link;
local_retry:
err = write(knet_h->sockfd[channel].sockfd[knet_h->sockfd[channel].is_created], buf, buflen);
if (err < 0) {
log_err(knet_h, KNET_SUB_TRANSP_LOOPBACK, "send local failed. error=%s\n", strerror(errno));
local_link->status.stats.tx_data_errors++;
}
if (err > 0 && err < buflen) {
log_debug(knet_h, KNET_SUB_TRANSP_LOOPBACK, "send local incomplete=%d bytes of %zu\n", err, inlen);
local_link->status.stats.tx_data_retries++;
buf += err;
buflen -= err;
- usleep(KNET_THREADS_TIMERES / 16);
+ usleep(knet_h->threads_timer_res / 16);
goto local_retry;
}
if (err == buflen) {
local_link->status.stats.tx_data_packets++;
local_link->status.stats.tx_data_bytes += inlen;
}
}
}
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_TX, "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_TX, "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 unreachable 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->host_id == knet_h->host_id &&
knet_h->has_loop_link) &&
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->host_id == knet_h->host_id &&
knet_h->has_loop_link) &&
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_TX,
"Received data packet but data MTU is still unknown."
" Packet might not be delivered."
" Assuming minimum 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;
}
/*
* compress data
*/
if ((knet_h->compress_model > 0) && (inlen > knet_h->compress_threshold)) {
size_t cmp_outlen = KNET_DATABUFSIZE_COMPRESS;
struct timespec start_time;
struct timespec end_time;
uint64_t compress_time;
clock_gettime(CLOCK_MONOTONIC, &start_time);
err = compress(knet_h,
(const unsigned char *)inbuf->khp_data_userdata, inlen,
knet_h->send_to_links_buf_compress, (ssize_t *)&cmp_outlen);
if (err < 0) {
knet_h->stats.tx_failed_to_compress++;
log_warn(knet_h, KNET_SUB_COMPRESS, "Compression failed (%d): %s", err, strerror(errno));
} else {
/* Collect stats */
clock_gettime(CLOCK_MONOTONIC, &end_time);
timespec_diff(start_time, end_time, &compress_time);
if (compress_time < knet_h->stats.tx_compress_time_min) {
knet_h->stats.tx_compress_time_min = compress_time;
}
if (compress_time > knet_h->stats.tx_compress_time_max) {
knet_h->stats.tx_compress_time_max = compress_time;
}
knet_h->stats.tx_compress_time_ave =
(unsigned long long)(knet_h->stats.tx_compress_time_ave * knet_h->stats.tx_compressed_packets +
compress_time) / (knet_h->stats.tx_compressed_packets+1);
knet_h->stats.tx_compressed_packets++;
knet_h->stats.tx_compressed_original_bytes += inlen;
knet_h->stats.tx_compressed_size_bytes += cmp_outlen;
if (cmp_outlen < inlen) {
memmove(inbuf->khp_data_userdata, knet_h->send_to_links_buf_compress, cmp_outlen);
inlen = cmp_outlen;
data_compressed = 1;
} else {
knet_h->stats.tx_unable_to_compress++;
}
}
}
if (knet_h->compress_model > 0 && !data_compressed) {
knet_h->stats.tx_uncompressed_packets++;
}
/*
* 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;
if (data_compressed) {
inbuf->khp_data_compress = knet_h->compress_model;
} else {
inbuf->khp_data_compress = 0;
}
if (pthread_mutex_lock(&knet_h->tx_seq_num_mutex)) {
log_debug(knet_h, KNET_SUB_TX, "Unable to get seq mutex lock");
goto out_unlock;
}
knet_h->tx_seq_num++;
/*
* force seq_num 0 to detect a node that has crashed and rejoining
* the knet instance. seq_num 0 will clear the buffers in the RX
* thread
*/
if (knet_h->tx_seq_num == 0) {
knet_h->tx_seq_num++;
}
/*
* cache the value in locked context
*/
tx_seq_num = knet_h->tx_seq_num;
inbuf->khp_data_seq_num = htons(knet_h->tx_seq_num);
pthread_mutex_unlock(&knet_h->tx_seq_num_mutex);
/*
* forcefully broadcast a ping to all nodes every SEQ_MAX / 8
* pckts.
* this solves 2 problems:
* 1) on TX socket overloads we generate extra pings to keep links alive
* 2) in 3+ nodes setup, where all the traffic is flowing between node 1 and 2,
* node 3+ will be able to keep in sync on the TX seq_num even without
* receiving traffic or pings in betweens. This avoids issues with
* rollover of the circular buffer
*/
if (tx_seq_num % (SEQ_MAX / 8) == 0) {
_send_pings(knet_h, 0);
}
if (inbuf->khp_data_frag_num > 1) {
while (frag_idx < inbuf->khp_data_frag_num) {
/*
* set the iov_base
*/
iov_out[frag_idx][0].iov_base = (void *)knet_h->send_to_links_buf[frag_idx];
iov_out[frag_idx][0].iov_len = KNET_HEADER_DATA_SIZE;
iov_out[frag_idx][1].iov_base = inbuf->khp_data_userdata + (temp_data_mtu * frag_idx);
/*
* set the len
*/
if (frag_len > temp_data_mtu) {
iov_out[frag_idx][1].iov_len = temp_data_mtu;
} else {
iov_out[frag_idx][1].iov_len = frag_len;
}
/*
* 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_seq_num = inbuf->khp_data_seq_num;
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;
knet_h->send_to_links_buf[frag_idx]->khp_data_compress = inbuf->khp_data_compress;
frag_len = frag_len - temp_data_mtu;
frag_idx++;
}
iovcnt_out = 2;
} else {
iov_out[frag_idx][0].iov_base = (void *)inbuf;
iov_out[frag_idx][0].iov_len = frag_len + KNET_HEADER_DATA_SIZE;
iovcnt_out = 1;
}
if (knet_h->crypto_instance) {
struct timespec start_time;
struct timespec end_time;
uint64_t crypt_time;
frag_idx = 0;
while (frag_idx < inbuf->khp_data_frag_num) {
clock_gettime(CLOCK_MONOTONIC, &start_time);
if (crypto_encrypt_and_signv(
knet_h,
iov_out[frag_idx], iovcnt_out,
knet_h->send_to_links_buf_crypt[frag_idx],
(ssize_t *)&outlen) < 0) {
log_debug(knet_h, KNET_SUB_TX, "Unable to encrypt packet");
savederrno = ECHILD;
err = -1;
goto out_unlock;
}
clock_gettime(CLOCK_MONOTONIC, &end_time);
timespec_diff(start_time, end_time, &crypt_time);
if (crypt_time < knet_h->stats.tx_crypt_time_min) {
knet_h->stats.tx_crypt_time_min = crypt_time;
}
if (crypt_time > knet_h->stats.tx_crypt_time_max) {
knet_h->stats.tx_crypt_time_max = crypt_time;
}
knet_h->stats.tx_crypt_time_ave =
(knet_h->stats.tx_crypt_time_ave * knet_h->stats.tx_crypt_packets +
crypt_time) / (knet_h->stats.tx_crypt_packets+1);
uncrypted_frag_size = 0;
for (j=0; j < iovcnt_out; j++) {
uncrypted_frag_size += iov_out[frag_idx][j].iov_len;
}
knet_h->stats.tx_crypt_byte_overhead += (outlen - uncrypted_frag_size);
knet_h->stats.tx_crypt_packets++;
iov_out[frag_idx][0].iov_base = knet_h->send_to_links_buf_crypt[frag_idx];
iov_out[frag_idx][0].iov_len = outlen;
frag_idx++;
}
iovcnt_out = 1;
}
memset(&msg, 0, sizeof(msg));
msgs_to_send = inbuf->khp_data_frag_num;
msg_idx = 0;
while (msg_idx < msgs_to_send) {
msg[msg_idx].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage);
msg[msg_idx].msg_hdr.msg_iov = &iov_out[msg_idx][0];
msg[msg_idx].msg_hdr.msg_iovlen = iovcnt_out;
msg_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]];
err = _dispatch_to_links(knet_h, dst_host, &msg[0], msgs_to_send);
savederrno = errno;
if (err) {
goto out_unlock;
}
}
} else {
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, &msg[0], msgs_to_send);
savederrno = errno;
if (err) {
goto out_unlock;
}
}
}
}
out_unlock:
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_TX, "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_TX, "Unable to get TX mutex lock: %s",
strerror(savederrno));
err = -1;
goto out;
}
knet_h->recv_from_sock_buf->kh_type = KNET_HEADER_TYPE_DATA;
memmove(knet_h->recv_from_sock_buf->khp_data_userdata, buff, buff_len);
err = _parse_recv_from_sock(knet_h, buff_len, channel, 1);
savederrno = errno;
pthread_mutex_unlock(&knet_h->tx_mutex);
out:
pthread_rwlock_unlock(&knet_h->global_rwlock);
errno = err ? savederrno : 0;
return err;
}
static void _handle_send_to_links(knet_handle_t knet_h, struct msghdr *msg, int sockfd, int8_t channel, int type)
{
ssize_t inlen = 0;
int savederrno = 0, docallback = 0;
if ((channel >= 0) &&
(channel < KNET_DATAFD_MAX) &&
(!knet_h->sockfd[channel].is_socket)) {
inlen = readv(sockfd, msg->msg_iov, 1);
} else {
inlen = recvmsg(sockfd, msg, MSG_DONTWAIT | MSG_NOSIGNAL);
}
if (inlen == 0) {
savederrno = 0;
docallback = 1;
} else if (inlen < 0) {
struct epoll_event ev;
savederrno = errno;
docallback = 1;
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_TX, "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;
}
} else {
knet_h->recv_from_sock_buf->kh_type = type;
_parse_recv_from_sock(knet_h, inlen, channel, 0);
}
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];
int i, nev, type;
int8_t channel;
struct iovec iov_in;
struct msghdr msg;
struct sockaddr_storage address;
set_thread_status(knet_h, KNET_THREAD_TX, KNET_THREAD_STARTED);
memset(&iov_in, 0, sizeof(iov_in));
iov_in.iov_base = (void *)knet_h->recv_from_sock_buf->khp_data_userdata;
iov_in.iov_len = KNET_MAX_PACKET_SIZE;
memset(&msg, 0, sizeof(struct msghdr));
msg.msg_name = &address;
msg.msg_namelen = sizeof(struct sockaddr_storage);
msg.msg_iov = &iov_in;
msg.msg_iovlen = 1;
knet_h->recv_from_sock_buf->kh_version = KNET_HEADER_VERSION;
knet_h->recv_from_sock_buf->khp_data_frag_seq = 0;
knet_h->recv_from_sock_buf->kh_node = htons(knet_h->host_id);
for (i = 0; i < PCKT_FRAG_MAX; i++) {
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, KNET_THREADS_TIMERES / 1000);
+ nev = epoll_wait(knet_h->send_to_links_epollfd, events, KNET_EPOLL_MAX_EVENTS + 1, knet_h->threads_timer_res / 1000);
/*
* we use timeout to detect if thread is shutting down
*/
if (nev == 0) {
continue;
}
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_TX, "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 (channel >= KNET_DATAFD_MAX) {
log_debug(knet_h, KNET_SUB_TX, "No available channels");
continue; /* channel not found */
}
}
if (pthread_mutex_lock(&knet_h->tx_mutex) != 0) {
log_debug(knet_h, KNET_SUB_TX, "Unable to get mutex lock");
continue;
}
_handle_send_to_links(knet_h, &msg, events[i].data.fd, channel, type);
pthread_mutex_unlock(&knet_h->tx_mutex);
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
}
set_thread_status(knet_h, KNET_THREAD_TX, KNET_THREAD_STOPPED);
return NULL;
}
diff --git a/libknet/transport_sctp.c b/libknet/transport_sctp.c
index 83fc359c..f24d9d7d 100644
--- a/libknet/transport_sctp.c
+++ b/libknet/transport_sctp.c
@@ -1,1508 +1,1508 @@
/*
* Copyright (C) 2016-2018 Red Hat, Inc. All rights reserved.
*
* Author: Christine Caulfield <ccaulfie@redhat.com>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include "compat.h"
#include "host.h"
#include "links.h"
#include "logging.h"
#include "common.h"
#include "transport_common.h"
#include "threads_common.h"
#ifdef HAVE_NETINET_SCTP_H
#include <netinet/sctp.h>
#include "transport_sctp.h"
typedef struct sctp_handle_info {
struct knet_list_head listen_links_list;
struct knet_list_head connect_links_list;
int connect_epollfd;
int connectsockfd[2];
int listen_epollfd;
int listensockfd[2];
pthread_t connect_thread;
pthread_t listen_thread;
socklen_t event_subscribe_kernel_size;
char *event_subscribe_buffer;
} sctp_handle_info_t;
/*
* use by fd_tracker data type
*/
#define SCTP_NO_LINK_INFO 0
#define SCTP_LISTENER_LINK_INFO 1
#define SCTP_ACCEPTED_LINK_INFO 2
#define SCTP_CONNECT_LINK_INFO 3
/*
* this value is per listener
*/
#define MAX_ACCEPTED_SOCKS 256
typedef struct sctp_listen_link_info {
struct knet_list_head list;
int listen_sock;
int accepted_socks[MAX_ACCEPTED_SOCKS];
struct sockaddr_storage src_address;
int on_listener_epoll;
int on_rx_epoll;
} sctp_listen_link_info_t;
typedef struct sctp_accepted_link_info {
char mread_buf[KNET_DATABUFSIZE];
ssize_t mread_len;
sctp_listen_link_info_t *link_info;
} sctp_accepted_link_info_t ;
typedef struct sctp_connect_link_info {
struct knet_list_head list;
sctp_listen_link_info_t *listener;
struct knet_link *link;
struct sockaddr_storage dst_address;
int connect_sock;
int on_connected_epoll;
int on_rx_epoll;
int close_sock;
} sctp_connect_link_info_t;
/*
* socket handling functions
*
* those functions do NOT perform locking. locking
* should be handled in the right context from callers
*/
/*
* sockets are removed from rx_epoll from callers
* see also error handling functions
*/
static int _close_connect_socket(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
sctp_connect_link_info_t *info = kn_link->transport_link;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
struct epoll_event ev;
if (info->on_connected_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLOUT;
ev.data.fd = info->connect_sock;
if (epoll_ctl(handle_info->connect_epollfd, EPOLL_CTL_DEL, info->connect_sock, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove connected socket from the epoll pool: %s",
strerror(errno));
goto exit_error;
}
info->on_connected_epoll = 0;
}
exit_error:
if (info->connect_sock != -1) {
if (_set_fd_tracker(knet_h, info->connect_sock, KNET_MAX_TRANSPORTS, SCTP_NO_LINK_INFO, NULL) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
close(info->connect_sock);
info->connect_sock = -1;
}
errno = savederrno;
return err;
}
static int _enable_sctp_notifications(knet_handle_t knet_h, int sock, const char *type)
{
int err = 0, savederrno = 0;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
if (setsockopt(sock, IPPROTO_SCTP, SCTP_EVENTS,
handle_info->event_subscribe_buffer,
handle_info->event_subscribe_kernel_size) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to enable %s events: %s",
type, strerror(savederrno));
}
errno = savederrno;
return err;
}
static int _configure_sctp_socket(knet_handle_t knet_h, int sock, struct sockaddr_storage *address, uint64_t flags, const char *type)
{
int err = 0, savederrno = 0;
int value;
int level;
#ifdef SOL_SCTP
level = SOL_SCTP;
#else
level = IPPROTO_SCTP;
#endif
if (_configure_transport_socket(knet_h, sock, address, flags, type) < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
value = 1;
if (setsockopt(sock, level, SCTP_NODELAY, &value, sizeof(value)) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSPORT, "Unable to set sctp nodelay: %s",
strerror(savederrno));
goto exit_error;
}
if (_enable_sctp_notifications(knet_h, sock, type) < 0) {
savederrno = errno;
err = -1;
}
exit_error:
errno = savederrno;
return err;
}
static int _reconnect_socket(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
sctp_connect_link_info_t *info = kn_link->transport_link;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
struct epoll_event ev;
if (connect(info->connect_sock, (struct sockaddr *)&kn_link->dst_addr, sockaddr_len(&kn_link->dst_addr)) < 0) {
if ((errno != EALREADY) && (errno != EINPROGRESS) && (errno != EISCONN)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to connect SCTP socket %d: %s",
info->connect_sock, strerror(savederrno));
goto exit_error;
}
}
if (!info->on_connected_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLOUT;
ev.data.fd = info->connect_sock;
if (epoll_ctl(handle_info->connect_epollfd, EPOLL_CTL_ADD, info->connect_sock, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to add send/recv to epoll pool: %s",
strerror(savederrno));
goto exit_error;
}
info->on_connected_epoll = 1;
}
exit_error:
errno = savederrno;
return err;
}
static int _create_connect_socket(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
sctp_connect_link_info_t *info = kn_link->transport_link;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
struct epoll_event ev;
int connect_sock;
connect_sock = socket(kn_link->dst_addr.ss_family, SOCK_STREAM, IPPROTO_SCTP);
if (connect_sock < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to create send/recv socket: %s",
strerror(savederrno));
goto exit_error;
}
if (_configure_sctp_socket(knet_h, connect_sock, &kn_link->dst_addr, kn_link->flags, "SCTP connect") < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
if (_set_fd_tracker(knet_h, connect_sock, KNET_TRANSPORT_SCTP, SCTP_CONNECT_LINK_INFO, info) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
info->connect_sock = connect_sock;
info->close_sock = 0;
if (_reconnect_socket(knet_h, kn_link) < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
exit_error:
if (err) {
if (info->on_connected_epoll) {
epoll_ctl(handle_info->connect_epollfd, EPOLL_CTL_DEL, connect_sock, &ev);
}
if (connect_sock >= 0) {
close(connect_sock);
}
}
errno = savederrno;
return err;
}
int sctp_transport_tx_sock_error(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno)
{
sctp_connect_link_info_t *connect_info = knet_h->knet_transport_fd_tracker[sockfd].data;
sctp_accepted_link_info_t *accepted_info = knet_h->knet_transport_fd_tracker[sockfd].data;
sctp_listen_link_info_t *listen_info;
if (recv_err < 0) {
switch (knet_h->knet_transport_fd_tracker[sockfd].data_type) {
case SCTP_CONNECT_LINK_INFO:
if (connect_info->link->transport_connected == 0) {
return -1;
}
break;
case SCTP_ACCEPTED_LINK_INFO:
listen_info = accepted_info->link_info;
if (listen_info->listen_sock != sockfd) {
if (listen_info->on_rx_epoll == 0) {
return -1;
}
}
break;
}
if (recv_errno == EAGAIN) {
#ifdef DEBUG
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Sock: %d is overloaded. Slowing TX down", sockfd);
#endif
/* Don't hold onto the lock while sleeping */
pthread_rwlock_unlock(&knet_h->global_rwlock);
- usleep(KNET_THREADS_TIMERES / 16);
+ usleep(knet_h->threads_timer_res / 16);
pthread_rwlock_rdlock(&knet_h->global_rwlock);
return 1;
}
return -1;
}
return 0;
}
/*
* socket error management functions
*
* both called with global read lock.
*
* NOTE: we need to remove the fd from the epoll as soon as possible
* even before we notify the respective thread to take care of it
* because scheduling can make it so that this thread will overload
* and the threads supposed to take care of the error will never
* be able to take action.
* we CANNOT handle FDs here diretly (close/reconnect/etc) due
* to locking context. We need to delegate that to their respective
* management threads within global write lock.
*
* this function is called from:
* - RX thread with recv_err <= 0 directly on recvmmsg error
* - transport_rx_is_data when msg_len == 0 (recv_err = 1)
* - transport_rx_is_data on notification (recv_err = 2)
*
* basically this small abouse of recv_err is to detect notifications
* generated by sockets created by listen().
*/
int sctp_transport_rx_sock_error(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno)
{
struct epoll_event ev;
sctp_connect_link_info_t *connect_info = knet_h->knet_transport_fd_tracker[sockfd].data;
sctp_accepted_link_info_t *accepted_info = knet_h->knet_transport_fd_tracker[sockfd].data;
sctp_listen_link_info_t *listen_info;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
switch (knet_h->knet_transport_fd_tracker[sockfd].data_type) {
case SCTP_CONNECT_LINK_INFO:
/*
* all connect link have notifications enabled
* and we accept only data from notification and
* generic recvmmsg errors.
*
* Errors generated by msg_len 0 can be ignored because
* they follow a notification (double notification)
*/
if (recv_err != 1) {
connect_info->link->transport_connected = 0;
if (connect_info->on_rx_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = sockfd;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_DEL, sockfd, &ev)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove EOFed socket from epoll pool: %s",
strerror(errno));
return -1;
}
connect_info->on_rx_epoll = 0;
}
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Notifying connect thread that sockfd %d received an error", sockfd);
if (sendto(handle_info->connectsockfd[1], &sockfd, sizeof(int), MSG_DONTWAIT | MSG_NOSIGNAL, NULL, 0) != sizeof(int)) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to notify connect thread: %s", strerror(errno));
}
}
break;
case SCTP_ACCEPTED_LINK_INFO:
listen_info = accepted_info->link_info;
if (listen_info->listen_sock != sockfd) {
if (recv_err != 1) {
if (listen_info->on_rx_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = sockfd;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_DEL, sockfd, &ev)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove EOFed socket from epoll pool: %s",
strerror(errno));
return -1;
}
listen_info->on_rx_epoll = 0;
}
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Notifying listen thread that sockfd %d received an error", sockfd);
if (sendto(handle_info->listensockfd[1], &sockfd, sizeof(int), MSG_DONTWAIT | MSG_NOSIGNAL, NULL, 0) != sizeof(int)) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to notify listen thread: %s", strerror(errno));
}
}
} else {
/*
* this means the listen() socket has generated
* a notification. now what? :-)
*/
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received stray notification for listen() socket %d", sockfd);
}
break;
default:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received unknown notification? %d", sockfd);
break;
}
/*
* Under RX pressure we need to give time to IPC to pick up the message
*/
/* Don't hold onto the lock while sleeping */
pthread_rwlock_unlock(&knet_h->global_rwlock);
- usleep(KNET_THREADS_TIMERES / 2);
+ usleep(knet_h->threads_timer_res / 2);
pthread_rwlock_rdlock(&knet_h->global_rwlock);
return 0;
}
/*
* NOTE: sctp_transport_rx_is_data is called with global rdlock
* delegate any FD error management to sctp_transport_rx_sock_error
* and keep this code to parsing incoming data only
*/
int sctp_transport_rx_is_data(knet_handle_t knet_h, int sockfd, struct knet_mmsghdr *msg)
{
size_t i;
struct iovec *iov = msg->msg_hdr.msg_iov;
size_t iovlen = msg->msg_hdr.msg_iovlen;
struct sctp_assoc_change *sac;
union sctp_notification *snp;
sctp_accepted_link_info_t *info = knet_h->knet_transport_fd_tracker[sockfd].data;
if (!(msg->msg_hdr.msg_flags & MSG_NOTIFICATION)) {
if (msg->msg_len == 0) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "received 0 bytes len packet: %d", sockfd);
/*
* NOTE: with event notification enabled, we receive error twice:
* 1) from the event notification
* 2) followed by a 0 byte msg_len
*
* This is generally not a problem if not for causing extra
* handling for the same issue. Should we drop notifications
* and keep the code generic (handle all errors via msg_len = 0)
* or keep the duplication as safety measure, or drop msg_len = 0
* handling (what about sockets without events enabled?)
*/
sctp_transport_rx_sock_error(knet_h, sockfd, 1, 0);
return 1;
}
/*
* missing MSG_EOR has to be treated as a short read
* from the socket and we need to fill in the mread buf
* while we wait for MSG_EOR
*/
if (!(msg->msg_hdr.msg_flags & MSG_EOR)) {
/*
* copy the incoming data into mread_buf + mread_len (incremental)
* and increase mread_len
*/
memmove(info->mread_buf + info->mread_len, iov->iov_base, msg->msg_len);
info->mread_len = info->mread_len + msg->msg_len;
return 0;
}
/*
* got EOR.
* if mread_len is > 0 we are completing a packet from short reads
* complete reassembling the packet in mread_buf, copy it back in the iov
* and set the iov/msg len numbers (size) correctly
*/
if (info->mread_len) {
/*
* add last fragment to mread_buf
*/
memmove(info->mread_buf + info->mread_len, iov->iov_base, msg->msg_len);
info->mread_len = info->mread_len + msg->msg_len;
/*
* move all back into the iovec
*/
memmove(iov->iov_base, info->mread_buf, info->mread_len);
msg->msg_len = info->mread_len;
info->mread_len = 0;
}
return 2;
}
if (!(msg->msg_hdr.msg_flags & MSG_EOR)) {
return 1;
}
for (i=0; i< iovlen; i++) {
snp = iov[i].iov_base;
switch (snp->sn_header.sn_type) {
case SCTP_ASSOC_CHANGE:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] sctp assoc change");
sac = &snp->sn_assoc_change;
if (sac->sac_state == SCTP_COMM_LOST) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] sctp assoc change: comm_lost");
sctp_transport_rx_sock_error(knet_h, sockfd, 2, 0);
}
break;
case SCTP_SHUTDOWN_EVENT:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] sctp shutdown event");
sctp_transport_rx_sock_error(knet_h, sockfd, 2, 0);
break;
case SCTP_SEND_FAILED:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] sctp send failed");
break;
case SCTP_PEER_ADDR_CHANGE:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] sctp peer addr change");
break;
case SCTP_REMOTE_ERROR:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] sctp remote error");
break;
default:
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "[event] unknown sctp event type: %hu\n", snp->sn_header.sn_type);
break;
}
}
return 0;
}
/*
* connect / outgoing socket management thread
*/
/*
* _handle_connected_sctp* are called with a global write lock
* from the connect_thread
*/
static void _handle_connected_sctp(knet_handle_t knet_h, int connect_sock)
{
int err;
struct epoll_event ev;
unsigned int status, len = sizeof(status);
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
sctp_connect_link_info_t *info = knet_h->knet_transport_fd_tracker[connect_sock].data;
struct knet_link *kn_link = info->link;
err = getsockopt(connect_sock, SOL_SOCKET, SO_ERROR, &status, &len);
if (err) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP getsockopt() on connecting socket %d failed: %s",
connect_sock, strerror(errno));
return;
}
if (info->close_sock) {
if (_close_connect_socket(knet_h, kn_link) < 0) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to close sock %d from _handle_connected_sctp: %s", connect_sock, strerror(errno));
return;
}
info->close_sock = 0;
if (_create_connect_socket(knet_h, kn_link) < 0) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to recreate connecting sock! %s", strerror(errno));
return;
}
}
if (status) {
log_info(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP connect on %d to %s port %s failed: %s",
connect_sock, kn_link->status.dst_ipaddr, kn_link->status.dst_port,
strerror(status));
/*
* No need to create a new socket if connect failed,
* just retry connect
*/
_reconnect_socket(knet_h, info->link);
return;
}
/*
* Connected - Remove us from the connect epoll
*/
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLOUT;
ev.data.fd = connect_sock;
if (epoll_ctl(handle_info->connect_epollfd, EPOLL_CTL_DEL, connect_sock, &ev)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove connected socket %d from epoll pool: %s",
connect_sock, strerror(errno));
}
info->on_connected_epoll = 0;
kn_link->transport_connected = 1;
kn_link->outsock = info->connect_sock;
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = connect_sock;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_ADD, connect_sock, &ev)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to add connected socket to epoll pool: %s",
strerror(errno));
}
info->on_rx_epoll = 1;
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP handler fd %d now connected to %s port %s",
connect_sock,
kn_link->status.dst_ipaddr, kn_link->status.dst_port);
}
static void _handle_connected_sctp_errors(knet_handle_t knet_h)
{
int sockfd = -1;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
sctp_connect_link_info_t *info;
if (recv(handle_info->connectsockfd[0], &sockfd, sizeof(int), MSG_DONTWAIT | MSG_NOSIGNAL) != sizeof(int)) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Short read on connectsockfd");
return;
}
if (_is_valid_fd(knet_h, sockfd) < 1) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received stray notification for connected socket fd error");
return;
}
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Processing connected error on socket: %d", sockfd);
info = knet_h->knet_transport_fd_tracker[sockfd].data;
info->close_sock = 1;
info->link->transport_connected = 0;
_reconnect_socket(knet_h, info->link);
}
static void *_sctp_connect_thread(void *data)
{
int savederrno;
int i, nev;
knet_handle_t knet_h = (knet_handle_t) data;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
set_thread_status(knet_h, KNET_THREAD_SCTP_CONN, KNET_THREAD_STARTED);
while (!shutdown_in_progress(knet_h)) {
- nev = epoll_wait(handle_info->connect_epollfd, events, KNET_EPOLL_MAX_EVENTS, KNET_THREADS_TIMERES / 1000);
+ nev = epoll_wait(handle_info->connect_epollfd, events, KNET_EPOLL_MAX_EVENTS, knet_h->threads_timer_res / 1000);
/*
* we use timeout to detect if thread is shutting down
*/
if (nev == 0) {
continue;
}
if (nev < 0) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP connect handler EPOLL ERROR: %s",
strerror(errno));
continue;
}
/*
* Sort out which FD has a connection
*/
savederrno = get_global_wrlock(knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to get write lock: %s",
strerror(savederrno));
continue;
}
/*
* minor optimization: deduplicate events
*
* in some cases we can receive multiple notifcations
* of the same FD having issues or need handling.
* It's enough to process it once even tho it's safe
* to handle them multiple times.
*/
for (i = 0; i < nev; i++) {
if (events[i].data.fd == handle_info->connectsockfd[0]) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received notification from rx_error for connected socket");
_handle_connected_sctp_errors(knet_h);
} else {
if (_is_valid_fd(knet_h, events[i].data.fd) == 1) {
_handle_connected_sctp(knet_h, events[i].data.fd);
} else {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received stray notification for dead fd %d\n", events[i].data.fd);
}
}
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
/*
* this thread can generate events for itself.
* we need to sleep in between loops to allow other threads
* to be scheduled
*/
usleep(knet_h->reconnect_int * 1000);
}
set_thread_status(knet_h, KNET_THREAD_SCTP_CONN, KNET_THREAD_STOPPED);
return NULL;
}
/*
* listen/incoming connections management thread
*/
/*
* Listener received a new connection
* called with a write lock from main thread
*/
static void _handle_incoming_sctp(knet_handle_t knet_h, int listen_sock)
{
int err = 0, savederrno = 0;
int new_fd;
int i = -1;
sctp_listen_link_info_t *info = knet_h->knet_transport_fd_tracker[listen_sock].data;
struct epoll_event ev;
struct sockaddr_storage ss;
socklen_t sock_len = sizeof(ss);
char addr_str[KNET_MAX_HOST_LEN];
char port_str[KNET_MAX_PORT_LEN];
sctp_accepted_link_info_t *accept_info = NULL;
new_fd = accept(listen_sock, (struct sockaddr *)&ss, &sock_len);
if (new_fd < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Incoming: accept error: %s", strerror(errno));
goto exit_error;
}
if (knet_addrtostr(&ss, sizeof(ss),
addr_str, KNET_MAX_HOST_LEN,
port_str, KNET_MAX_PORT_LEN) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Incoming: unable to gather socket info");
goto exit_error;
}
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Incoming: received connection from: %s port: %s",
addr_str, port_str);
/*
* Keep a track of all accepted FDs
*/
for (i=0; i<MAX_ACCEPTED_SOCKS; i++) {
if (info->accepted_socks[i] == -1) {
info->accepted_socks[i] = new_fd;
break;
}
}
if (i == MAX_ACCEPTED_SOCKS) {
errno = EBUSY;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Incoming: too many connections!");
goto exit_error;
}
if (_configure_common_socket(knet_h, new_fd, 0, "SCTP incoming") < 0) { /* Inherit flags from listener? */
savederrno = errno;
err = -1;
goto exit_error;
}
if (_enable_sctp_notifications(knet_h, new_fd, "Incoming connection") < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
accept_info = malloc(sizeof(sctp_accepted_link_info_t));
if (!accept_info) {
savederrno = errno;
err = -1;
goto exit_error;
}
memset(accept_info, 0, sizeof(sctp_accepted_link_info_t));
accept_info->link_info = info;
if (_set_fd_tracker(knet_h, new_fd, KNET_TRANSPORT_SCTP, SCTP_ACCEPTED_LINK_INFO, accept_info) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set fd tracker: %s",
strerror(errno));
goto exit_error;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = new_fd;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_ADD, new_fd, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Incoming: unable to add accepted socket %d to epoll pool: %s",
new_fd, strerror(errno));
goto exit_error;
}
info->on_rx_epoll = 1;
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Incoming: accepted new fd %d for %s/%s (listen fd: %d). index: %d",
new_fd, addr_str, port_str, info->listen_sock, i);
exit_error:
if (err) {
if ((i >= 0) || (i < MAX_ACCEPTED_SOCKS)) {
info->accepted_socks[i] = -1;
}
_set_fd_tracker(knet_h, new_fd, KNET_MAX_TRANSPORTS, SCTP_NO_LINK_INFO, NULL);
free(accept_info);
close(new_fd);
}
errno = savederrno;
return;
}
/*
* Listen thread received a notification of a bad socket that needs closing
* called with a write lock from main thread
*/
static void _handle_listen_sctp_errors(knet_handle_t knet_h)
{
int sockfd = -1;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
sctp_accepted_link_info_t *accept_info;
sctp_listen_link_info_t *info;
struct knet_host *host;
int link_idx;
int i;
if (recv(handle_info->listensockfd[0], &sockfd, sizeof(int), MSG_DONTWAIT | MSG_NOSIGNAL) != sizeof(int)) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Short read on listensockfd");
return;
}
if (_is_valid_fd(knet_h, sockfd) < 1) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received stray notification for listen socket fd error");
return;
}
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Processing listen error on socket: %d", sockfd);
accept_info = knet_h->knet_transport_fd_tracker[sockfd].data;
info = accept_info->link_info;
/*
* clear all links using this accepted socket as
* outbound dynamically connected socket
*/
for (host = knet_h->host_head; host != NULL; host = host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
if ((host->link[link_idx].dynamic == KNET_LINK_DYNIP) &&
(host->link[link_idx].outsock == sockfd)) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Found dynamic connection on host %d link %d (%d)",
host->host_id, link_idx, sockfd);
host->link[link_idx].status.dynconnected = 0;
host->link[link_idx].transport_connected = 0;
host->link[link_idx].outsock = 0;
memset(&host->link[link_idx].dst_addr, 0, sizeof(struct sockaddr_storage));
}
}
}
for (i=0; i<MAX_ACCEPTED_SOCKS; i++) {
if (sockfd == info->accepted_socks[i]) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Closing accepted socket %d", sockfd);
_set_fd_tracker(knet_h, sockfd, KNET_MAX_TRANSPORTS, SCTP_NO_LINK_INFO, NULL);
info->accepted_socks[i] = -1;
free(accept_info);
close(sockfd);
}
}
}
static void *_sctp_listen_thread(void *data)
{
int savederrno;
int i, nev;
knet_handle_t knet_h = (knet_handle_t) data;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
set_thread_status(knet_h, KNET_THREAD_SCTP_LISTEN, KNET_THREAD_STARTED);
while (!shutdown_in_progress(knet_h)) {
- nev = epoll_wait(handle_info->listen_epollfd, events, KNET_EPOLL_MAX_EVENTS, KNET_THREADS_TIMERES / 1000);
+ nev = epoll_wait(handle_info->listen_epollfd, events, KNET_EPOLL_MAX_EVENTS, knet_h->threads_timer_res / 1000);
/*
* we use timeout to detect if thread is shutting down
*/
if (nev == 0) {
continue;
}
if (nev < 0) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP listen handler EPOLL ERROR: %s",
strerror(errno));
continue;
}
savederrno = get_global_wrlock(knet_h);
if (savederrno) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to get write lock: %s",
strerror(savederrno));
continue;
}
/*
* Sort out which FD has an incoming connection
*/
for (i = 0; i < nev; i++) {
if (events[i].data.fd == handle_info->listensockfd[0]) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received notification from rx_error for listener/accepted socket");
_handle_listen_sctp_errors(knet_h);
} else {
if (_is_valid_fd(knet_h, events[i].data.fd) == 1) {
_handle_incoming_sctp(knet_h, events[i].data.fd);
} else {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Received listen notification from invalid socket");
}
}
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
}
set_thread_status(knet_h, KNET_THREAD_SCTP_LISTEN, KNET_THREAD_STOPPED);
return NULL;
}
/*
* sctp_link_listener_start/stop are called in global write lock
* context from set_config and clear_config.
*/
static sctp_listen_link_info_t *sctp_link_listener_start(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
int listen_sock = -1;
struct epoll_event ev;
sctp_listen_link_info_t *info = NULL;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
/*
* Only allocate a new listener if src address is different
*/
knet_list_for_each_entry(info, &handle_info->listen_links_list, list) {
if (memcmp(&info->src_address, &kn_link->src_addr, sizeof(struct sockaddr_storage)) == 0) {
return info;
}
}
info = malloc(sizeof(sctp_listen_link_info_t));
if (!info) {
err = -1;
goto exit_error;
}
memset(info, 0, sizeof(sctp_listen_link_info_t));
memset(info->accepted_socks, -1, sizeof(info->accepted_socks));
memmove(&info->src_address, &kn_link->src_addr, sizeof(struct sockaddr_storage));
listen_sock = socket(kn_link->src_addr.ss_family, SOCK_STREAM, IPPROTO_SCTP);
if (listen_sock < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to create listener socket: %s",
strerror(savederrno));
goto exit_error;
}
if (_configure_sctp_socket(knet_h, listen_sock, &kn_link->src_addr, kn_link->flags, "SCTP listener") < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
if (bind(listen_sock, (struct sockaddr *)&kn_link->src_addr, sockaddr_len(&kn_link->src_addr)) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to bind listener socket: %s",
strerror(savederrno));
goto exit_error;
}
if (listen(listen_sock, 5) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to listen on listener socket: %s",
strerror(savederrno));
goto exit_error;
}
if (_set_fd_tracker(knet_h, listen_sock, KNET_TRANSPORT_SCTP, SCTP_LISTENER_LINK_INFO, info) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = listen_sock;
if (epoll_ctl(handle_info->listen_epollfd, EPOLL_CTL_ADD, listen_sock, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to add listener to epoll pool: %s",
strerror(savederrno));
goto exit_error;
}
info->on_listener_epoll = 1;
info->listen_sock = listen_sock;
knet_list_add(&info->list, &handle_info->listen_links_list);
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Listening on fd %d for %s:%s", listen_sock, kn_link->status.src_ipaddr, kn_link->status.src_port);
exit_error:
if (err) {
if (info->on_listener_epoll) {
epoll_ctl(handle_info->listen_epollfd, EPOLL_CTL_DEL, listen_sock, &ev);
}
if (listen_sock >= 0) {
close(listen_sock);
}
if (info) {
free(info);
info = NULL;
}
}
errno = savederrno;
return info;
}
static int sctp_link_listener_stop(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
int found = 0, i;
struct knet_host *host;
int link_idx;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
sctp_connect_link_info_t *this_link_info = kn_link->transport_link;
sctp_listen_link_info_t *info = this_link_info->listener;
sctp_connect_link_info_t *link_info;
struct epoll_event ev;
for (host = knet_h->host_head; host != NULL; host = host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
if (&host->link[link_idx] == kn_link)
continue;
link_info = host->link[link_idx].transport_link;
if ((link_info) &&
(link_info->listener == info) &&
(host->link[link_idx].status.enabled == 1)) {
found = 1;
break;
}
}
}
if (found) {
this_link_info->listener = NULL;
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP listener socket %d still in use", info->listen_sock);
savederrno = EBUSY;
err = -1;
goto exit_error;
}
if (info->on_listener_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = info->listen_sock;
if (epoll_ctl(handle_info->listen_epollfd, EPOLL_CTL_DEL, info->listen_sock, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove listener to epoll pool: %s",
strerror(savederrno));
goto exit_error;
}
info->on_listener_epoll = 0;
}
if (_set_fd_tracker(knet_h, info->listen_sock, KNET_MAX_TRANSPORTS, SCTP_NO_LINK_INFO, NULL) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
close(info->listen_sock);
for (i=0; i< MAX_ACCEPTED_SOCKS; i++) {
if (info->accepted_socks[i] > -1) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = info->accepted_socks[i];
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_DEL, info->accepted_socks[i], &ev)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove EOFed socket from epoll pool: %s",
strerror(errno));
}
info->on_rx_epoll = 0;
free(knet_h->knet_transport_fd_tracker[info->accepted_socks[i]].data);
close(info->accepted_socks[i]);
if (_set_fd_tracker(knet_h, info->accepted_socks[i], KNET_MAX_TRANSPORTS, SCTP_NO_LINK_INFO, NULL) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
info->accepted_socks[i] = -1;
}
}
knet_list_del(&info->list);
free(info);
this_link_info->listener = NULL;
exit_error:
errno = savederrno;
return err;
}
/*
* Links config/clear. Both called with global wrlock from link_set_config/clear_config
*/
int sctp_transport_link_set_config(knet_handle_t knet_h, struct knet_link *kn_link)
{
int savederrno = 0, err = 0;
sctp_connect_link_info_t *info;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
info = malloc(sizeof(sctp_connect_link_info_t));
if (!info) {
goto exit_error;
}
memset(info, 0, sizeof(sctp_connect_link_info_t));
kn_link->transport_link = info;
info->link = kn_link;
memmove(&info->dst_address, &kn_link->dst_addr, sizeof(struct sockaddr_storage));
info->on_connected_epoll = 0;
info->connect_sock = -1;
info->listener = sctp_link_listener_start(knet_h, kn_link);
if (!info->listener) {
savederrno = errno;
err = -1;
goto exit_error;
}
if (kn_link->dynamic == KNET_LINK_STATIC) {
if (_create_connect_socket(knet_h, kn_link) < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
kn_link->outsock = info->connect_sock;
}
knet_list_add(&info->list, &handle_info->connect_links_list);
exit_error:
if (err) {
if (info) {
if (info->connect_sock) {
close(info->connect_sock);
}
if (info->listener) {
sctp_link_listener_stop(knet_h, kn_link);
}
kn_link->transport_link = NULL;
free(info);
}
}
errno = savederrno;
return err;
}
/*
* called with global wrlock
*/
int sctp_transport_link_clear_config(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
sctp_connect_link_info_t *info;
struct epoll_event ev;
if (!kn_link) {
errno = EINVAL;
return -1;
}
info = kn_link->transport_link;
if (!info) {
errno = EINVAL;
return -1;
}
if ((sctp_link_listener_stop(knet_h, kn_link) <0) && (errno != EBUSY)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove listener trasport: %s",
strerror(savederrno));
goto exit_error;
}
if (info->on_rx_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = info->connect_sock;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_DEL, info->connect_sock, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to remove connected socket from epoll pool: %s",
strerror(savederrno));
goto exit_error;
}
info->on_rx_epoll = 0;
}
if (_close_connect_socket(knet_h, kn_link) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to close connected socket: %s",
strerror(savederrno));
goto exit_error;
}
knet_list_del(&info->list);
free(info);
kn_link->transport_link = NULL;
exit_error:
errno = savederrno;
return err;
}
/*
* transport_free and transport_init are
* called only from knet_handle_new and knet_handle_free.
* all resources (hosts/links) should have been already freed at this point
* and they are called in a write locked context, hence they
* don't need their own locking.
*/
int sctp_transport_free(knet_handle_t knet_h)
{
sctp_handle_info_t *handle_info;
void *thread_status;
struct epoll_event ev;
if (!knet_h->transports[KNET_TRANSPORT_SCTP]) {
errno = EINVAL;
return -1;
}
handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
/*
* keep it here while we debug list usage and such
*/
if (!knet_list_empty(&handle_info->listen_links_list)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Internal error. listen links list is not empty");
}
if (!knet_list_empty(&handle_info->connect_links_list)) {
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Internal error. connect links list is not empty");
}
if (handle_info->listen_thread) {
pthread_cancel(handle_info->listen_thread);
pthread_join(handle_info->listen_thread, &thread_status);
}
if (handle_info->connect_thread) {
pthread_cancel(handle_info->connect_thread);
pthread_join(handle_info->connect_thread, &thread_status);
}
if (handle_info->listensockfd[0] >= 0) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = handle_info->listensockfd[0];
epoll_ctl(handle_info->listen_epollfd, EPOLL_CTL_DEL, handle_info->listensockfd[0], &ev);
}
if (handle_info->connectsockfd[0] >= 0) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = handle_info->connectsockfd[0];
epoll_ctl(handle_info->connect_epollfd, EPOLL_CTL_DEL, handle_info->connectsockfd[0], &ev);
}
_close_socketpair(knet_h, handle_info->connectsockfd);
_close_socketpair(knet_h, handle_info->listensockfd);
if (handle_info->listen_epollfd >= 0) {
close(handle_info->listen_epollfd);
}
if (handle_info->connect_epollfd >= 0) {
close(handle_info->connect_epollfd);
}
free(handle_info->event_subscribe_buffer);
free(handle_info);
knet_h->transports[KNET_TRANSPORT_SCTP] = NULL;
return 0;
}
static int _sctp_subscribe_init(knet_handle_t knet_h)
{
int test_socket, savederrno;
sctp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_SCTP];
char dummy_events[100];
struct sctp_event_subscribe *events;
/* Below we set the first 6 fields of this expanding struct.
* SCTP_EVENTS is deprecated, but SCTP_EVENT is not available
* on Linux; on the other hand, FreeBSD and old Linux does not
* accept small transfers, so we can't simply use this minimum
* everywhere. Thus we query and store the native size. */
const unsigned int subscribe_min = 6;
test_socket = socket(PF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (test_socket < 0) {
if (errno == EPROTONOSUPPORT) {
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "SCTP not supported, skipping initialization");
return 0;
}
savederrno = errno;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to create test socket: %s",
strerror(savederrno));
return savederrno;
}
handle_info->event_subscribe_kernel_size = sizeof dummy_events;
if (getsockopt(test_socket, IPPROTO_SCTP, SCTP_EVENTS, &dummy_events,
&handle_info->event_subscribe_kernel_size)) {
close(test_socket);
savederrno = errno;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to query kernel size of struct sctp_event_subscribe: %s",
strerror(savederrno));
return savederrno;
}
close(test_socket);
if (handle_info->event_subscribe_kernel_size < subscribe_min) {
savederrno = ERANGE;
log_err(knet_h, KNET_SUB_TRANSP_SCTP,
"No kernel support for the necessary notifications: struct sctp_event_subscribe is %u bytes, %u needed",
handle_info->event_subscribe_kernel_size, subscribe_min);
return savederrno;
}
events = malloc(handle_info->event_subscribe_kernel_size);
if (!events) {
savederrno = errno;
log_err(knet_h, KNET_SUB_TRANSP_SCTP,
"Failed to allocate event subscribe buffer: %s", strerror(savederrno));
return savederrno;
}
memset(events, 0, handle_info->event_subscribe_kernel_size);
events->sctp_data_io_event = 1;
events->sctp_association_event = 1;
events->sctp_address_event = 1;
events->sctp_send_failure_event = 1;
events->sctp_peer_error_event = 1;
events->sctp_shutdown_event = 1;
handle_info->event_subscribe_buffer = (char *)events;
log_debug(knet_h, KNET_SUB_TRANSP_SCTP, "Size of struct sctp_event_subscribe is %u in kernel, %zu in user space",
handle_info->event_subscribe_kernel_size, sizeof(struct sctp_event_subscribe));
return 0;
}
int sctp_transport_init(knet_handle_t knet_h)
{
int err = 0, savederrno = 0;
sctp_handle_info_t *handle_info;
struct epoll_event ev;
if (knet_h->transports[KNET_TRANSPORT_SCTP]) {
errno = EEXIST;
return -1;
}
handle_info = malloc(sizeof(sctp_handle_info_t));
if (!handle_info) {
return -1;
}
memset(handle_info, 0,sizeof(sctp_handle_info_t));
knet_h->transports[KNET_TRANSPORT_SCTP] = handle_info;
savederrno = _sctp_subscribe_init(knet_h);
if (savederrno) {
err = -1;
goto exit_fail;
}
knet_list_init(&handle_info->listen_links_list);
knet_list_init(&handle_info->connect_links_list);
handle_info->listen_epollfd = epoll_create(KNET_EPOLL_MAX_EVENTS + 1);
if (handle_info->listen_epollfd < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to create epoll listen fd: %s",
strerror(savederrno));
goto exit_fail;
}
if (_fdset_cloexec(handle_info->listen_epollfd)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set CLOEXEC on listen_epollfd: %s",
strerror(savederrno));
goto exit_fail;
}
handle_info->connect_epollfd = epoll_create(KNET_EPOLL_MAX_EVENTS + 1);
if (handle_info->connect_epollfd < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to create epoll connect fd: %s",
strerror(savederrno));
goto exit_fail;
}
if (_fdset_cloexec(handle_info->connect_epollfd)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to set CLOEXEC on connect_epollfd: %s",
strerror(savederrno));
goto exit_fail;
}
if (_init_socketpair(knet_h, handle_info->connectsockfd) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to init connect socketpair: %s",
strerror(savederrno));
goto exit_fail;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = handle_info->connectsockfd[0];
if (epoll_ctl(handle_info->connect_epollfd, EPOLL_CTL_ADD, handle_info->connectsockfd[0], &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to add connectsockfd[0] to connect epoll pool: %s",
strerror(savederrno));
goto exit_fail;
}
if (_init_socketpair(knet_h, handle_info->listensockfd) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to init listen socketpair: %s",
strerror(savederrno));
goto exit_fail;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = handle_info->listensockfd[0];
if (epoll_ctl(handle_info->listen_epollfd, EPOLL_CTL_ADD, handle_info->listensockfd[0], &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to add listensockfd[0] to listen epoll pool: %s",
strerror(savederrno));
goto exit_fail;
}
/*
* Start connect & listener threads
*/
set_thread_status(knet_h, KNET_THREAD_SCTP_LISTEN, KNET_THREAD_REGISTERED);
savederrno = pthread_create(&handle_info->listen_thread, 0, _sctp_listen_thread, (void *) knet_h);
if (savederrno) {
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to start sctp listen thread: %s",
strerror(savederrno));
goto exit_fail;
}
set_thread_status(knet_h, KNET_THREAD_SCTP_CONN, KNET_THREAD_REGISTERED);
savederrno = pthread_create(&handle_info->connect_thread, 0, _sctp_connect_thread, (void *) knet_h);
if (savederrno) {
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_SCTP, "Unable to start sctp connect thread: %s",
strerror(savederrno));
goto exit_fail;
}
exit_fail:
if (err < 0) {
sctp_transport_free(knet_h);
}
errno = savederrno;
return err;
}
int sctp_transport_link_dyn_connect(knet_handle_t knet_h, int sockfd, struct knet_link *kn_link)
{
kn_link->outsock = sockfd;
kn_link->status.dynconnected = 1;
kn_link->transport_connected = 1;
return 0;
}
#endif
diff --git a/libknet/transport_udp.c b/libknet/transport_udp.c
index 31445023..374cd05c 100644
--- a/libknet/transport_udp.c
+++ b/libknet/transport_udp.c
@@ -1,433 +1,433 @@
/*
* Copyright (C) 2016-2018 Red Hat, Inc. All rights reserved.
*
* Author: Christine Caulfield <ccaulfie@redhat.com>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#if defined (IP_RECVERR) || defined (IPV6_RECVERR)
#include <linux/errqueue.h>
#endif
#include "libknet.h"
#include "compat.h"
#include "host.h"
#include "link.h"
#include "logging.h"
#include "common.h"
#include "transport_common.h"
#include "transport_udp.h"
#include "threads_common.h"
typedef struct udp_handle_info {
struct knet_list_head links_list;
} udp_handle_info_t;
typedef struct udp_link_info {
struct knet_list_head list;
struct sockaddr_storage local_address;
int socket_fd;
int on_epoll;
} udp_link_info_t;
int udp_transport_link_set_config(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
int sock = -1;
struct epoll_event ev;
udp_link_info_t *info;
udp_handle_info_t *handle_info = knet_h->transports[KNET_TRANSPORT_UDP];
#if defined (IP_RECVERR) || defined (IPV6_RECVERR)
int value;
#endif
/*
* Only allocate a new link if the local address is different
*/
knet_list_for_each_entry(info, &handle_info->links_list, list) {
if (memcmp(&info->local_address, &kn_link->src_addr, sizeof(struct sockaddr_storage)) == 0) {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "Re-using existing UDP socket for new link");
kn_link->outsock = info->socket_fd;
kn_link->transport_link = info;
kn_link->transport_connected = 1;
return 0;
}
}
info = malloc(sizeof(udp_link_info_t));
if (!info) {
err = -1;
goto exit_error;
}
sock = socket(kn_link->src_addr.ss_family, SOCK_DGRAM, 0);
if (sock < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to create listener socket: %s",
strerror(savederrno));
goto exit_error;
}
if (_configure_transport_socket(knet_h, sock, &kn_link->src_addr, kn_link->flags, "UDP") < 0) {
savederrno = errno;
err = -1;
goto exit_error;
}
#ifdef IP_RECVERR
if (kn_link->src_addr.ss_family == AF_INET) {
value = 1;
if (setsockopt(sock, SOL_IP, IP_RECVERR, &value, sizeof(value)) <0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to set RECVERR on socket: %s",
strerror(savederrno));
goto exit_error;
}
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "IP_RECVERR enabled on socket: %i", sock);
}
#else
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "IP_RECVERR not available in this build/platform");
#endif
#ifdef IPV6_RECVERR
if (kn_link->src_addr.ss_family == AF_INET6) {
value = 1;
if (setsockopt(sock, SOL_IPV6, IPV6_RECVERR, &value, sizeof(value)) <0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to set RECVERR on socket: %s",
strerror(savederrno));
goto exit_error;
}
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "IPV6_RECVERR enabled on socket: %i", sock);
}
#else
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "IPV6_RECVERR not available in this build/platform");
#endif
if (bind(sock, (struct sockaddr *)&kn_link->src_addr, sockaddr_len(&kn_link->src_addr))) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to bind listener socket: %s",
strerror(savederrno));
goto exit_error;
}
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = sock;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_ADD, sock, &ev)) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to add listener to epoll pool: %s",
strerror(savederrno));
goto exit_error;
}
info->on_epoll = 1;
if (_set_fd_tracker(knet_h, sock, KNET_TRANSPORT_UDP, 0, info) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
memmove(&info->local_address, &kn_link->src_addr, sizeof(struct sockaddr_storage));
info->socket_fd = sock;
knet_list_add(&info->list, &handle_info->links_list);
kn_link->outsock = sock;
kn_link->transport_link = info;
kn_link->transport_connected = 1;
exit_error:
if (err) {
if (info) {
if (info->on_epoll) {
epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_DEL, sock, &ev);
}
free(info);
}
if (sock >= 0) {
close(sock);
}
}
errno = savederrno;
return err;
}
int udp_transport_link_clear_config(knet_handle_t knet_h, struct knet_link *kn_link)
{
int err = 0, savederrno = 0;
int found = 0;
struct knet_host *host;
int link_idx;
udp_link_info_t *info = kn_link->transport_link;
struct epoll_event ev;
for (host = knet_h->host_head; host != NULL; host = host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
if (&host->link[link_idx] == kn_link)
continue;
if ((host->link[link_idx].transport_link == info) &&
(host->link[link_idx].status.enabled == 1)) {
found = 1;
break;
}
}
}
if (found) {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "UDP socket %d still in use", info->socket_fd);
savederrno = EBUSY;
err = -1;
goto exit_error;
}
if (info->on_epoll) {
memset(&ev, 0, sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = info->socket_fd;
if (epoll_ctl(knet_h->recv_from_links_epollfd, EPOLL_CTL_DEL, info->socket_fd, &ev) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to remove UDP socket from epoll poll: %s",
strerror(errno));
goto exit_error;
}
info->on_epoll = 0;
}
if (_set_fd_tracker(knet_h, info->socket_fd, KNET_MAX_TRANSPORTS, 0, NULL) < 0) {
savederrno = errno;
err = -1;
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Unable to set fd tracker: %s",
strerror(savederrno));
goto exit_error;
}
close(info->socket_fd);
knet_list_del(&info->list);
free(kn_link->transport_link);
exit_error:
errno = savederrno;
return err;
}
int udp_transport_free(knet_handle_t knet_h)
{
udp_handle_info_t *handle_info;
if (!knet_h->transports[KNET_TRANSPORT_UDP]) {
errno = EINVAL;
return -1;
}
handle_info = knet_h->transports[KNET_TRANSPORT_UDP];
/*
* keep it here while we debug list usage and such
*/
if (!knet_list_empty(&handle_info->links_list)) {
log_err(knet_h, KNET_SUB_TRANSP_UDP, "Internal error. handle list is not empty");
return -1;
}
free(handle_info);
knet_h->transports[KNET_TRANSPORT_UDP] = NULL;
return 0;
}
int udp_transport_init(knet_handle_t knet_h)
{
udp_handle_info_t *handle_info;
if (knet_h->transports[KNET_TRANSPORT_UDP]) {
errno = EEXIST;
return -1;
}
handle_info = malloc(sizeof(udp_handle_info_t));
if (!handle_info) {
return -1;
}
memset(handle_info, 0, sizeof(udp_handle_info_t));
knet_h->transports[KNET_TRANSPORT_UDP] = handle_info;
knet_list_init(&handle_info->links_list);
return 0;
}
#if defined (IP_RECVERR) || defined (IPV6_RECVERR)
static int read_errs_from_sock(knet_handle_t knet_h, int sockfd)
{
int err = 0, savederrno = 0;
int got_err = 0;
char buffer[1024];
struct iovec iov;
struct msghdr msg;
struct cmsghdr *cmsg;
struct sock_extended_err *sock_err;
struct icmphdr icmph;
struct sockaddr_storage remote;
struct sockaddr_storage *origin;
char addr_str[KNET_MAX_HOST_LEN];
char port_str[KNET_MAX_PORT_LEN];
iov.iov_base = &icmph;
iov.iov_len = sizeof(icmph);
msg.msg_name = (void*)&remote;
msg.msg_namelen = sizeof(remote);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
msg.msg_control = buffer;
msg.msg_controllen = sizeof(buffer);
for (;;) {
err = recvmsg(sockfd, &msg, MSG_ERRQUEUE);
savederrno = errno;
if (err < 0) {
if (!got_err) {
errno = savederrno;
return -1;
} else {
return 0;
}
}
got_err = 1;
for (cmsg = CMSG_FIRSTHDR(&msg);cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
if (((cmsg->cmsg_level == SOL_IP) && (cmsg->cmsg_type == IP_RECVERR)) ||
((cmsg->cmsg_level == SOL_IPV6 && (cmsg->cmsg_type == IPV6_RECVERR)))) {
sock_err = (struct sock_extended_err*)(void *)CMSG_DATA(cmsg);
if (sock_err) {
switch (sock_err->ee_origin) {
case 0: /* no origin */
case 1: /* local source (EMSGSIZE) */
if (sock_err->ee_errno == EMSGSIZE) {
if (pthread_mutex_lock(&knet_h->kmtu_mutex) != 0) {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "Unable to get mutex lock");
knet_h->kernel_mtu = 0;
break;
} else {
knet_h->kernel_mtu = sock_err->ee_info;
pthread_mutex_unlock(&knet_h->kmtu_mutex);
}
/*
* we can only try to take a lock here. This part of the code
* can be invoked by any thread, including PMTUd that is already
* holding a lock at that stage.
* If PMTUd is holding the lock, most likely it is already running
* and we don't need to notify it back.
*/
if (!pthread_mutex_trylock(&knet_h->pmtud_mutex)) {
if (!knet_h->pmtud_running) {
if (!knet_h->pmtud_forcerun) {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "Notifying PMTUd to rerun");
knet_h->pmtud_forcerun = 1;
}
}
pthread_mutex_unlock(&knet_h->pmtud_mutex);
}
}
/*
* those errors are way too noisy
*/
break;
case 2: /* ICMP */
case 3: /* ICMP6 */
origin = (struct sockaddr_storage *)(void *)SO_EE_OFFENDER(sock_err);
if (knet_addrtostr(origin, sizeof(origin),
addr_str, KNET_MAX_HOST_LEN,
port_str, KNET_MAX_PORT_LEN) < 0) {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "Received ICMP error from unknown source: %s", strerror(sock_err->ee_errno));
} else {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "Received ICMP error from %s: %s", addr_str, strerror(sock_err->ee_errno));
}
break;
}
} else {
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "No data in MSG_ERRQUEUE");
}
}
}
}
}
#else
static int read_errs_from_sock(knet_handle_t knet_h, int sockfd)
{
return 0;
}
#endif
int udp_transport_rx_sock_error(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno)
{
if (recv_errno == EAGAIN) {
read_errs_from_sock(knet_h, sockfd);
}
return 0;
}
int udp_transport_tx_sock_error(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno)
{
if (recv_err < 0) {
if (recv_errno == EMSGSIZE) {
read_errs_from_sock(knet_h, sockfd);
return 0;
}
if (recv_errno == EINVAL || recv_errno == EPERM) {
return -1;
}
if ((recv_errno == ENOBUFS) || (recv_errno == EAGAIN)) {
#ifdef DEBUG
log_debug(knet_h, KNET_SUB_TRANSP_UDP, "Sock: %d is overloaded. Slowing TX down", sockfd);
#endif
- usleep(KNET_THREADS_TIMERES / 16);
+ usleep(knet_h->threads_timer_res / 16);
} else {
read_errs_from_sock(knet_h, sockfd);
}
return 1;
}
return 0;
}
int udp_transport_rx_is_data(knet_handle_t knet_h, int sockfd, struct knet_mmsghdr *msg)
{
if (msg->msg_len == 0)
return 0;
return 2;
}
int udp_transport_link_dyn_connect(knet_handle_t knet_h, int sockfd, struct knet_link *kn_link)
{
kn_link->status.dynconnected = 1;
return 0;
}

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