修复接入多台tfe时的bug

* 修复keepalive_replay_switch关闭仍然加入hash表的bug
   * 修复多台tfe时获得tfe_id不正确的问题
   * 修改tfe_mgr的线程模型,改成accept之后创建新线程
   * tfe配置中增加enabled字段

common/include/kni_utils.h

@@ -61,9 +61,9 @@ struct kni_tcpopt_info{
 };
 
 //field_stat
-#define KNI_FIELD_MAX  32
+#define KNI_FIELD_MAX  64
 enum kni_field{
-	KNI_FIELD_TOT_PKT,
+	KNI_FIELD_TOT_PKT = 0,
 	KNI_FIELD_BYP_PKT,
 	KNI_FIELD_INTCP_PKT,
 	KNI_FIELD_IPV6_PKT,
@@ -90,6 +90,8 @@ enum kni_field{
 	KNI_FIELD_IPV6HDR_PARSE_FAIL,
 	KNI_FIELD_KEEPALIVE_REPLAY_ADD_SUCC,
 	KNI_FIELD_KEEPALIVE_REPLAY_ADD_FAIL,
+	KNI_FIELD_KEEPALIVE_REPLAY_DEL_SUCC,
+	KNI_FIELD_KEEPALIVE_REPLAY_DEL_FAIL,
 	KNI_FIELD_EXCEED_MTU,
 	KNI_FIELD_SENDTO_TFE_FAIL,
 	//KNI_FIELD_TFE_STATUS_BASE must be last