增加逐流的上、下游收发字节统计并对业务插件提供查询接口。

common/include/tfe_stream.h

@@ -68,8 +68,20 @@ enum tfe_stream_close_reason
 	REASON_ERROR
 };
 
+enum tfe_stream_info
+{
+	/* OFFSET IN BYTES, FROM BEGIN OF THE DIRECTION
+	 * TYPE: SIZE_T */
+	INFO_FROM_DOWNSTREAM_RX_OFFSET,
+	INFO_FROM_UPSTREAM_RX_OFFSET,
+};
+
 int tfe_stream_action_set_opt(const struct tfe_stream * stream, enum tfe_stream_action_opt type,
 	void * value, size_t size);
+
+int tfe_stream_info_get(const struct tfe_stream * stream, enum tfe_stream_info type,
+	void * value, size_t size);
+
 enum tfe_stream_opt_level
 {
 	STREAM_OPT_LEVEL_TCP,