diff --git a/include/stellar/packet.h b/include/stellar/packet.h
index 439729d..2ffa3b0 100644
--- a/include/stellar/packet.h
+++ b/include/stellar/packet.h
@@ -90,7 +90,6 @@ uint16_t packet_get_payload_len(const struct packet *pkt);
 int packet_need_drop(const struct packet *pkt);
 void packet_set_drop(struct packet *pkt);
 
-void packet_set_ctrl(struct packet *pkt);
 int packet_is_ctrl(const struct packet *pkt);
 
 void packet_set_direction(struct packet *pkt, int dir);
diff --git a/include/stellar/session.h b/include/stellar/session.h
index f0e46fd..767eabf 100644
--- a/include/stellar/session.h
+++ b/include/stellar/session.h
@@ -60,6 +60,10 @@ enum session_stat
     STAT_DUP_PKTS_BYPASS,
     STAT_DUP_BYTES_BYPASS,
 
+    STAT_INJ_PKTS_FAIL,  // TODO
+    STAT_INJ_PKTS_SUSS,  // TODO
+    STAT_INJ_BYTES_SUSS, // TODO
+
     // control packet
     STAT_CTRL_PKTS_RX,  // TODO
     STAT_CTRL_BYTES_RX, // TODO
diff --git a/include/stellar/stellar.h b/include/stellar/stellar.h
index 410583f..0aacd11 100644
--- a/include/stellar/stellar.h
+++ b/include/stellar/stellar.h
@@ -8,7 +8,7 @@ extern "C"
 
 #include <stdint.h>
 
-uint8_t stellar_get_current_thread_index();
+uint16_t stellar_get_current_thread_index();
 
 #ifdef __cplusplus
 }
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b951838..90605b8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -4,7 +4,6 @@ add_subdirectory(timestamp)
 add_subdirectory(tuple)
 add_subdirectory(packet)
 add_subdirectory(packet_io)
-add_subdirectory(thread_idx)
 add_subdirectory(id_generator)
 add_subdirectory(ip_reassembly)
 add_subdirectory(tcp_reassembly)
diff --git a/src/id_generator/CMakeLists.txt b/src/id_generator/CMakeLists.txt
index 834204f..ec65080 100644
--- a/src/id_generator/CMakeLists.txt
+++ b/src/id_generator/CMakeLists.txt
@@ -1,4 +1,4 @@
 add_library(id_generator id_generator.cpp)
 target_include_directories(id_generator PUBLIC ${CMAKE_CURRENT_LIST_DIR})
 target_include_directories(id_generator PUBLIC ${CMAKE_SOURCE_DIR}/src/stellar)
-target_link_libraries(id_generator log thread_idx)
\ No newline at end of file
+target_link_libraries(id_generator log core)
\ No newline at end of file
diff --git a/src/id_generator/id_generator.cpp b/src/id_generator/id_generator.cpp
index 6739fc3..e4b94b1 100644
--- a/src/id_generator/id_generator.cpp
+++ b/src/id_generator/id_generator.cpp
@@ -2,7 +2,7 @@
 #include <string.h>
 
 #include "macro.h"
-#include "thread_idx.h"
+#include "stellar_priv.h"
 #include "id_generator.h"
 
 struct id_generator
diff --git a/src/packet/packet_priv.h b/src/packet/packet_priv.h
index c7cc5b4..8fc8306 100644
--- a/src/packet/packet_priv.h
+++ b/src/packet/packet_priv.h
@@ -69,6 +69,8 @@ void *packet_get_io_ctx(const struct packet *pkt);
 
 int packet_is_fragment(const struct packet *pkt);
 
+void packet_set_ctrl(struct packet *pkt);
+
 struct packet *packet_new(uint16_t pkt_len);
 void packet_free(struct packet *pkt);
 struct packet *packet_dup(const struct packet *pkt);
diff --git a/src/packet_io/dumpfile_io.cpp b/src/packet_io/dumpfile_io.cpp
index 1cd996b..7d82909 100644
--- a/src/packet_io/dumpfile_io.cpp
+++ b/src/packet_io/dumpfile_io.cpp
@@ -15,7 +15,7 @@
 
 struct dumpfile_io
 {
-    uint8_t nr_threads;
+    uint16_t nr_threads;
     char directory[256];
 
     pcap_t *pcap;
@@ -124,7 +124,7 @@ static void *dumpfile_thread(void *arg)
  * Public API
  ******************************************************************************/
 
-struct dumpfile_io *dumpfile_io_new(const char *directory, uint8_t nr_threads)
+struct dumpfile_io *dumpfile_io_new(const char *directory, uint16_t nr_threads)
 {
     pthread_t tid;
     struct dumpfile_io *handle = (struct dumpfile_io *)calloc(1, sizeof(struct dumpfile_io));
diff --git a/src/packet_io/dumpfile_io.h b/src/packet_io/dumpfile_io.h
index 8c69b04..0951882 100644
--- a/src/packet_io/dumpfile_io.h
+++ b/src/packet_io/dumpfile_io.h
@@ -9,7 +9,7 @@ extern "C"
 #include "packet_io.h"
 
 struct dumpfile_io;
-struct dumpfile_io *dumpfile_io_new(const char *directory, uint8_t nr_threads);
+struct dumpfile_io *dumpfile_io_new(const char *directory, uint16_t nr_threads);
 void dumpfile_io_free(struct dumpfile_io *handle);
 
 int dumpfile_io_init(struct dumpfile_io *handle, uint16_t thr_idx);
diff --git a/src/packet_io/marsio_io.cpp b/src/packet_io/marsio_io.cpp
index e33f52c..21c5747 100644
--- a/src/packet_io/marsio_io.cpp
+++ b/src/packet_io/marsio_io.cpp
@@ -44,12 +44,12 @@ static inline int is_keepalive_packet(const char *data, int len)
  * Public API
  ******************************************************************************/
 
-struct marsio_io *marsio_io_new(const char *app_symbol, const char *dev_symbol, uint16_t *cpu_mask, uint8_t nr_threads)
+struct marsio_io *marsio_io_new(const char *app_symbol, const char *dev_symbol, uint16_t *cpu_mask, uint16_t nr_threads)
 {
     int opt = 1;
     cpu_set_t coremask;
     CPU_ZERO(&coremask);
-    for (uint8_t i = 0; i < nr_threads; i++)
+    for (uint16_t i = 0; i < nr_threads; i++)
     {
         CPU_SET(cpu_mask[i], &coremask);
     }
diff --git a/src/packet_io/marsio_io.h b/src/packet_io/marsio_io.h
index 56103a2..658b1fd 100644
--- a/src/packet_io/marsio_io.h
+++ b/src/packet_io/marsio_io.h
@@ -9,7 +9,7 @@ extern "C"
 #include "packet_io.h"
 
 struct marsio_io;
-struct marsio_io *marsio_io_new(const char *app_symbol, const char *dev_symbol, uint16_t *cpu_mask, uint8_t nr_threads);
+struct marsio_io *marsio_io_new(const char *app_symbol, const char *dev_symbol, uint16_t *cpu_mask, uint16_t nr_threads);
 void marsio_io_free(struct marsio_io *handle);
 
 int marsio_io_init(struct marsio_io *handle, uint16_t thr_idx);
diff --git a/src/packet_io/packet_io.h b/src/packet_io/packet_io.h
index c8a2cf3..4499967 100644
--- a/src/packet_io/packet_io.h
+++ b/src/packet_io/packet_io.h
@@ -63,7 +63,7 @@ struct packet_io_options
     char app_symbol[64];
     char dev_symbol[64];
 
-    uint8_t nr_threads;
+    uint16_t nr_threads;
     uint16_t cpu_mask[MAX_THREAD_NUM];
 };
 
diff --git a/src/plugin/CMakeLists.txt b/src/plugin/CMakeLists.txt
index c58b553..3dbcff5 100644
--- a/src/plugin/CMakeLists.txt
+++ b/src/plugin/CMakeLists.txt
@@ -1,3 +1,3 @@
 add_library(plugin_manager plugin_manager.cpp)
 target_include_directories(plugin_manager PUBLIC ${CMAKE_CURRENT_LIST_DIR})
-target_link_libraries(plugin_manager session_manager thread_idx)
\ No newline at end of file
+target_link_libraries(plugin_manager session_manager core)
\ No newline at end of file
diff --git a/src/plugin/plugin_manager.cpp b/src/plugin/plugin_manager.cpp
index baec9dd..abcd7ca 100644
--- a/src/plugin/plugin_manager.cpp
+++ b/src/plugin/plugin_manager.cpp
@@ -1,7 +1,7 @@
 #include <assert.h>
 #include "plugin_manager.h"
 #include "session_priv.h"
-#include "thread_idx.h"
+#include "stellar_priv.h"
 
 struct plugin_manager
 {
diff --git a/src/stellar/CMakeLists.txt b/src/stellar/CMakeLists.txt
index 579a963..8899daa 100644
--- a/src/stellar/CMakeLists.txt
+++ b/src/stellar/CMakeLists.txt
@@ -1,5 +1,7 @@
-add_executable(stellar config.cpp stat.cpp stellar.cpp)
-target_link_libraries(stellar timestamp plugin_manager session_manager ip_reassembly packet_io thread_idx)
-target_link_libraries(stellar pthread fieldstat4 toml)
+add_library(core config.cpp stat.cpp stellar.cpp)
+target_link_libraries(core timestamp plugin_manager session_manager ip_reassembly packet_io)
+target_link_libraries(core pthread fieldstat4 toml)
 
+add_executable(stellar main.cpp)
+target_link_libraries(stellar core)
 install(TARGETS stellar RUNTIME DESTINATION bin COMPONENT Program)
\ No newline at end of file
diff --git a/src/stellar/config.cpp b/src/stellar/config.cpp
index 3a40ff6..a291a67 100644
--- a/src/stellar/config.cpp
+++ b/src/stellar/config.cpp
@@ -122,7 +122,7 @@ static int parse_packet_io_section(toml_table_t *root, struct packet_io_options
         CONFIG_LOG_ERROR("config file missing packet_io->cpu_mask");
         return -1;
     }
-    for (uint8_t i = 0; i < opts->nr_threads; i++)
+    for (uint16_t i = 0; i < opts->nr_threads; i++)
     {
         ptr = toml_raw_at(mask_array, i);
         if (ptr == NULL)
@@ -489,7 +489,7 @@ void stellar_print_config(struct stellar_config *config)
         CONFIG_LOG_DEBUG("packet_io->dev_symbol                                : %s", io_opts->dev_symbol);
     }
     CONFIG_LOG_DEBUG("packet_io->nr_threads                                : %d", io_opts->nr_threads);
-    for (uint8_t i = 0; i < io_opts->nr_threads; i++)
+    for (uint16_t i = 0; i < io_opts->nr_threads; i++)
     {
         CONFIG_LOG_DEBUG("packet_io->cpu_mask[%03d]                            : %d", i, io_opts->cpu_mask[i]);
     }
diff --git a/src/stellar/main.cpp b/src/stellar/main.cpp
new file mode 100644
index 0000000..51fbd2f
--- /dev/null
+++ b/src/stellar/main.cpp
@@ -0,0 +1,130 @@
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <stdlib.h>
+
+#include "logo.h"
+#include "config.h"
+#include "timestamp.h"
+#include "id_generator.h"
+#include "stellar_priv.h"
+
+static const char *log_config_file = "./conf/log.toml";
+static const char *stellar_config_file = "./conf/stellar.toml";
+
+static void signal_handler(int signo)
+{
+    if (signo == SIGINT)
+    {
+        STELLAR_LOG_STATE("SIGINT received, notify threads to exit !!!");
+        ATOMIC_SET(&runtime->need_exit, 1);
+    }
+
+    if (signo == SIGQUIT)
+    {
+        STELLAR_LOG_STATE("SIGQUIT received, notify threads to exit !!!");
+        ATOMIC_SET(&runtime->need_exit, 1);
+    }
+
+    if (signo == SIGTERM)
+    {
+        STELLAR_LOG_STATE("SIGTERM received, notify threads to exit !!!");
+        ATOMIC_SET(&runtime->need_exit, 1);
+    }
+
+    if (signo == SIGHUP)
+    {
+        STELLAR_LOG_STATE("SIGHUP received, reload log level !!!");
+        log_reload_level(log_config_file);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    timestamp_update();
+
+    signal(SIGINT, signal_handler);
+    signal(SIGQUIT, signal_handler);
+    signal(SIGTERM, signal_handler);
+    signal(SIGHUP, signal_handler);
+
+    if (log_init(log_config_file) != 0)
+    {
+        STELLAR_LOG_ERROR("unable to init log");
+        goto error_out;
+    }
+    STELLAR_LOG_STATE("start stellar (version: %s)\n %s", __stellar_version, logo_str);
+
+    if (stellar_load_config(stellar_config_file, config) != 0)
+    {
+        STELLAR_LOG_ERROR("unable to load config file");
+        goto error_out;
+    }
+    stellar_print_config(config);
+    STELLAR_LOG_DEBUG("sizeof(struct session) = %lu bytes", sizeof(struct session));
+
+    if (id_generator_init(config->dev_opts.base, config->dev_opts.offset) != 0)
+    {
+        STELLAR_LOG_ERROR("unable to init id generator");
+        goto error_out;
+    }
+
+    runtime->stat = stellar_stat_new(config->io_opts.nr_threads);
+    if (runtime->stat == NULL)
+    {
+        STELLAR_LOG_ERROR("unable to create stellar stat");
+        goto error_out;
+    }
+
+    runtime->plug_mgr = plugin_manager_new();
+    if (runtime->plug_mgr == NULL)
+    {
+        STELLAR_LOG_ERROR("unable to create plugin manager");
+        goto error_out;
+    }
+
+    runtime->packet_io = packet_io_new(&config->io_opts);
+    if (runtime->packet_io == NULL)
+    {
+        STELLAR_LOG_ERROR("unable to create packet io");
+        goto error_out;
+    }
+
+    if (stellar_thread_init(runtime, config) != 0)
+    {
+        STELLAR_LOG_ERROR("unable to init thread context");
+        goto error_out;
+    }
+
+    if (stellar_thread_run(runtime, config) != 0)
+    {
+        STELLAR_LOG_ERROR("unable to create worker thread");
+        goto error_out;
+    }
+
+    runtime->stat_last_output_ts = timestamp_get_msec();
+    while (!ATOMIC_READ(&runtime->need_exit))
+    {
+        timestamp_update();
+        if (timestamp_get_msec() - runtime->stat_last_output_ts > 2000)
+        {
+            runtime->stat_last_output_ts = timestamp_get_msec();
+            stellar_stat_output(runtime->stat);
+        }
+        usleep(1000); // 1ms
+    }
+
+error_out:
+    stellar_thread_join(runtime, config);
+    stellar_thread_clean(runtime, config);
+    packet_io_free(runtime->packet_io);
+    plugin_manager_free(runtime->plug_mgr);
+    stellar_stat_free(runtime->stat);
+    STELLAR_LOG_STATE("stellar exit !!!\n");
+    log_free();
+
+    return 0;
+}
\ No newline at end of file
diff --git a/src/stellar/stellar.cpp b/src/stellar/stellar.cpp
index ff80945..5084b6c 100644
--- a/src/stellar/stellar.cpp
+++ b/src/stellar/stellar.cpp
@@ -1,84 +1,18 @@
-#include <stdio.h>
-#include <assert.h>
 #include <errno.h>
-#include <pthread.h>
 #include <unistd.h>
-#include <string.h>
-#include <signal.h>
-#include <stdlib.h>
+#include <pthread.h>
 #include <sys/prctl.h>
 
-#include "logo.h"
-#include "stat.h"
 #include "config.h"
-#include "packet_priv.h"
-#include "packet_io.h"
 #include "timestamp.h"
-#include "thread_idx.h"
-#include "id_generator.h"
-#include "ip_reassembly.h"
-#include "session_manager.h"
-#include "plugin_manager.h"
+#include "stellar_priv.h"
 
-#define STELLAR_LOG_STATE(format, ...) LOG_STATE("stellar", format, ##__VA_ARGS__)
-#define STELLAR_LOG_ERROR(format, ...) LOG_ERROR("stellar", format, ##__VA_ARGS__)
-#define STELLAR_LOG_DEBUG(format, ...) LOG_DEBUG("stellar", format, ##__VA_ARGS__)
-
-struct stellar_thread
-{
-    pthread_t tid;
-    uint16_t idx;
-    uint64_t is_runing;
-    uint64_t timing_wheel_last_update_ts;
-    struct ip_reassembly *ip_mgr;
-    struct session_manager *sess_mgr;
-};
-
-struct stellar_runtime
-{
-    uint64_t need_exit;
-    uint64_t stat_last_output_ts;
-    struct stellar_stat *stat;
-    struct packet_io *packet_io;
-    struct plugin_manager *plug_mgr;
-    struct stellar_thread threads[MAX_THREAD_NUM];
-};
 struct stellar_runtime __runtime = {0};
 struct stellar_runtime *runtime = &__runtime;
 
 struct stellar_config __config = {0};
 struct stellar_config *config = &__config;
 
-static const char *log_config_file = "./conf/log.toml";
-static const char *stellar_config_file = "./conf/stellar.toml";
-
-static void signal_handler(int signo)
-{
-    if (signo == SIGINT)
-    {
-        STELLAR_LOG_STATE("SIGINT received, notify threads to exit !!!");
-        ATOMIC_SET(&runtime->need_exit, 1);
-    }
-
-    if (signo == SIGQUIT)
-    {
-        STELLAR_LOG_STATE("SIGQUIT received, notify threads to exit !!!");
-        ATOMIC_SET(&runtime->need_exit, 1);
-    }
-
-    if (signo == SIGTERM)
-    {
-        STELLAR_LOG_STATE("SIGTERM received, notify threads to exit !!!");
-        ATOMIC_SET(&runtime->need_exit, 1);
-    }
-
-    if (signo == SIGHUP)
-    {
-        STELLAR_LOG_STATE("SIGHUP received, reload log level !!!");
-        log_reload_level(log_config_file);
-    }
-}
-
 static void update_session_stat(struct session *sess, struct packet *pkt)
 {
     if (sess)
@@ -275,12 +209,24 @@ static void *work_thread(void *arg)
     return NULL;
 }
 
-static int stellar_thread_init(struct stellar_runtime *ctx, uint8_t nr_threads)
+static thread_local uint16_t __thread_id = 0;
+
+uint16_t stellar_get_current_thread_index()
+{
+    return __thread_id;
+}
+
+void stellar_set_current_thread_index(uint16_t idx)
+{
+    __thread_id = idx;
+}
+
+int stellar_thread_init(struct stellar_runtime *runtime, struct stellar_config *config)
 {
     uint64_t now = timestamp_get_msec();
-    for (uint8_t i = 0; i < nr_threads; i++)
+    for (uint16_t i = 0; i < config->io_opts.nr_threads; i++)
     {
-        struct stellar_thread *thread = &ctx->threads[i];
+        struct stellar_thread *thread = &runtime->threads[i];
         thread->idx = i;
         thread->is_runing = 0;
         thread->timing_wheel_last_update_ts = now;
@@ -301,11 +247,11 @@ static int stellar_thread_init(struct stellar_runtime *ctx, uint8_t nr_threads)
     return 0;
 }
 
-static void stellar_thread_clean(struct stellar_runtime *ctx, uint8_t nr_threads)
+void stellar_thread_clean(struct stellar_runtime *runtime, struct stellar_config *config)
 {
-    for (uint8_t i = 0; i < nr_threads; i++)
+    for (uint16_t i = 0; i < config->io_opts.nr_threads; i++)
     {
-        struct stellar_thread *thread = &ctx->threads[i];
+        struct stellar_thread *thread = &runtime->threads[i];
         if (ATOMIC_READ(&thread->is_runing) == 0)
         {
             STELLAR_LOG_STATE("wait worker thread %d free context", i);
@@ -315,11 +261,11 @@ static void stellar_thread_clean(struct stellar_runtime *ctx, uint8_t nr_threads
     }
 }
 
-static int stellar_thread_run(struct stellar_runtime *ctx, uint8_t nr_threads)
+int stellar_thread_run(struct stellar_runtime *runtime, struct stellar_config *config)
 {
-    for (uint8_t i = 0; i < nr_threads; i++)
+    for (uint16_t i = 0; i < config->io_opts.nr_threads; i++)
     {
-        struct stellar_thread *thread = &ctx->threads[i];
+        struct stellar_thread *thread = &runtime->threads[i];
         if (pthread_create(&thread->tid, NULL, work_thread, (void *)thread) < 0)
         {
             STELLAR_LOG_ERROR("unable to create worker thread, error %d: %s", errno, strerror(errno));
@@ -330,11 +276,11 @@ static int stellar_thread_run(struct stellar_runtime *ctx, uint8_t nr_threads)
     return 0;
 }
 
-static void stellar_thread_join(struct stellar_runtime *ctx, uint8_t nr_threads)
+void stellar_thread_join(struct stellar_runtime *runtime, struct stellar_config *config)
 {
-    for (uint8_t i = 0; i < nr_threads; i++)
+    for (uint16_t i = 0; i < config->io_opts.nr_threads; i++)
     {
-        struct stellar_thread *thread = &ctx->threads[i];
+        struct stellar_thread *thread = &runtime->threads[i];
         while (ATOMIC_READ(&thread->is_runing) == 1)
         {
             STELLAR_LOG_STATE("wait worker thread %d stop", i);
@@ -342,92 +288,3 @@ static void stellar_thread_join(struct stellar_runtime *ctx, uint8_t nr_threads)
         }
     }
 }
-
-int main(int argc, char **argv)
-{
-    uint8_t nr_threads = 0;
-    timestamp_update();
-
-    signal(SIGINT, signal_handler);
-    signal(SIGQUIT, signal_handler);
-    signal(SIGTERM, signal_handler);
-    signal(SIGHUP, signal_handler);
-
-    if (log_init(log_config_file) != 0)
-    {
-        STELLAR_LOG_ERROR("unable to init log");
-        goto error_out;
-    }
-    STELLAR_LOG_STATE("start stellar (version: %s)\n %s", __stellar_version, logo_str);
-
-    if (stellar_load_config(stellar_config_file, config) != 0)
-    {
-        STELLAR_LOG_ERROR("unable to load config file");
-        goto error_out;
-    }
-    stellar_print_config(config);
-    STELLAR_LOG_DEBUG("sizeof(struct session) = %lu bytes", sizeof(struct session));
-    nr_threads = config->io_opts.nr_threads;
-
-    if (id_generator_init(config->dev_opts.base, config->dev_opts.offset) != 0)
-    {
-        STELLAR_LOG_ERROR("unable to init id generator");
-        goto error_out;
-    }
-
-    runtime->stat = stellar_stat_new(nr_threads);
-    if (runtime->stat == NULL)
-    {
-        STELLAR_LOG_ERROR("unable to create stellar stat");
-        goto error_out;
-    }
-
-    runtime->plug_mgr = plugin_manager_new();
-    if (runtime->plug_mgr == NULL)
-    {
-        STELLAR_LOG_ERROR("unable to create plugin manager");
-        goto error_out;
-    }
-
-    runtime->packet_io = packet_io_new(&config->io_opts);
-    if (runtime->packet_io == NULL)
-    {
-        STELLAR_LOG_ERROR("unable to create packet io");
-        goto error_out;
-    }
-
-    if (stellar_thread_init(runtime, nr_threads) != 0)
-    {
-        STELLAR_LOG_ERROR("unable to init thread context");
-        goto error_out;
-    }
-
-    if (stellar_thread_run(runtime, nr_threads) != 0)
-    {
-        STELLAR_LOG_ERROR("unable to create worker thread");
-        goto error_out;
-    }
-
-    runtime->stat_last_output_ts = timestamp_get_msec();
-    while (!ATOMIC_READ(&runtime->need_exit))
-    {
-        timestamp_update();
-        if (timestamp_get_msec() - runtime->stat_last_output_ts > 2000)
-        {
-            runtime->stat_last_output_ts = timestamp_get_msec();
-            stellar_stat_output(runtime->stat);
-        }
-        usleep(1000); // 1ms
-    }
-
-error_out:
-    stellar_thread_join(runtime, nr_threads);
-    stellar_thread_clean(runtime, nr_threads);
-    packet_io_free(runtime->packet_io);
-    plugin_manager_free(runtime->plug_mgr);
-    stellar_stat_free(runtime->stat);
-    STELLAR_LOG_STATE("stellar exit !!!\n");
-    log_free();
-
-    return 0;
-}
\ No newline at end of file
diff --git a/src/stellar/stellar_priv.h b/src/stellar/stellar_priv.h
new file mode 100644
index 0000000..8a2f9b8
--- /dev/null
+++ b/src/stellar/stellar_priv.h
@@ -0,0 +1,51 @@
+#ifndef _STELLAR_PRIV_H
+#define _STELLAR_PRIV_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include "stat.h"
+#include "plugin_manager.h"
+#include "stellar/stellar.h"
+
+#define STELLAR_LOG_STATE(format, ...) LOG_STATE("stellar", format, ##__VA_ARGS__)
+#define STELLAR_LOG_ERROR(format, ...) LOG_ERROR("stellar", format, ##__VA_ARGS__)
+#define STELLAR_LOG_DEBUG(format, ...) LOG_DEBUG("stellar", format, ##__VA_ARGS__)
+
+struct stellar_thread
+{
+    pthread_t tid;
+    uint16_t idx;
+    uint64_t is_runing;
+    uint64_t timing_wheel_last_update_ts;
+    struct ip_reassembly *ip_mgr;
+    struct session_manager *sess_mgr;
+};
+
+struct stellar_runtime
+{
+    uint64_t need_exit;
+    uint64_t stat_last_output_ts;
+    struct stellar_stat *stat;
+    struct packet_io *packet_io;
+    struct plugin_manager *plug_mgr;
+    struct stellar_thread threads[MAX_THREAD_NUM];
+};
+
+extern struct stellar_runtime *runtime;
+extern struct stellar_config *config;
+
+void stellar_set_current_thread_index(uint16_t idx);
+
+int stellar_thread_init(struct stellar_runtime *runtime, struct stellar_config *config);
+void stellar_thread_clean(struct stellar_runtime *runtime, struct stellar_config *config);
+int stellar_thread_run(struct stellar_runtime *runtime, struct stellar_config *config);
+void stellar_thread_join(struct stellar_runtime *runtime, struct stellar_config *config);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/thread_idx/CMakeLists.txt b/src/thread_idx/CMakeLists.txt
deleted file mode 100644
index a79bac4..0000000
--- a/src/thread_idx/CMakeLists.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-add_library(thread_idx thread_idx.cpp)
-target_include_directories(thread_idx PUBLIC ${CMAKE_CURRENT_LIST_DIR})
-target_include_directories(thread_idx PUBLIC ${CMAKE_SOURCE_DIR}/include)
-target_link_libraries(thread_idx)
diff --git a/src/thread_idx/thread_idx.cpp b/src/thread_idx/thread_idx.cpp
deleted file mode 100644
index 7756e6b..0000000
--- a/src/thread_idx/thread_idx.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-#include "thread_idx.h"
-
-static thread_local uint8_t __thread_id = 0;
-
-uint8_t stellar_get_current_thread_index()
-{
-    return __thread_id;
-}
-
-void stellar_set_current_thread_index(uint8_t idx)
-{
-    __thread_id = idx;
-}
diff --git a/src/thread_idx/thread_idx.h b/src/thread_idx/thread_idx.h
deleted file mode 100644
index ebc5c6e..0000000
--- a/src/thread_idx/thread_idx.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef _THREAD_IDX_H
-#define _THREAD_IDX_H
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-#include "stellar/stellar.h"
-
-void stellar_set_current_thread_index(uint8_t idx);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif