增加BUFF接口函数：获取和设置BUFF起始offset。

- 增加marsio_buff_offset_set()和marsio_buff_offset_get()函数。

1 files changed, 5 insertions, 0 deletions

diff --git a/include/external/marsio.h b/include/external/marsio.h
index 8956db6..bb1fa9e 100644
--- a/include/external/marsio.h
+++ b/include/external/marsio.h
@@ -177,6 +177,11 @@ char *marsio_buff_adj(marsio_buff_t *m, uint16_t len);
 
 int marsio_buff_trim(marsio_buff_t *m, uint16_t len);
 
+char * marsio_buff_offset_set(marsio_buff_t *m, off_t offset,
+	int is_relative);
+
+off_t marsio_buff_offset_get(marsio_buff_t *m);
+
 /* 支持写时复制的报文修改裁剪函数 */
 marsio_buff_t * marsio_buff_prepend_cw(struct mr_instance * instance,
 	marsio_buff_t *m, uint16_t len, void ** ptr_out);