[PATCH RFC v2 3/3] smb: use sizeof() to get __SMB2_HEADER_STRUCTURE_SIZE

[chenxiaosong.chenxiaosong@linux.dev]

From: ChenXiaoSong <chenxiaosong@kylinos.cn>

I have checked the size of the structure using GDB:

  gdb ./build/fs/smb/server/ksmbd.ko
  (gdb) p sizeof(struct smb2_hdr)
  $1 = 64

  gdb ./build/fs/smb/client/cifs.ko
  (gdb) p sizeof(struct smb2_hdr)
  $1 = 64

Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
---
 fs/smb/common/smb2pdu.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h
index f5ebbe31384a..f2a6b7191f43 100644
--- a/fs/smb/common/smb2pdu.h
+++ b/fs/smb/common/smb2pdu.h
@@ -107,10 +107,6 @@
  *
  */
 
-#define __SMB2_HEADER_STRUCTURE_SIZE	64
-#define SMB2_HEADER_STRUCTURE_SIZE				\
-	cpu_to_le16(__SMB2_HEADER_STRUCTURE_SIZE)
-
 #define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe)
 #define SMB2_TRANSFORM_PROTO_NUM cpu_to_le32(0x424d53fd)
 #define SMB2_COMPRESSION_TRANSFORM_ID cpu_to_le32(0x424d53fc)
@@ -157,6 +153,10 @@ struct smb2_hdr {
 	__u8   Signature[16];
 } __packed;
 
+#define __SMB2_HEADER_STRUCTURE_SIZE	(sizeof(struct smb2_hdr))
+#define SMB2_HEADER_STRUCTURE_SIZE				\
+	cpu_to_le16(__SMB2_HEADER_STRUCTURE_SIZE)
+
 struct smb3_hdr_req {
 	__le32 ProtocolId;	/* 0xFE 'S' 'M' 'B' */
 	__le16 StructureSize;	/* 64 */
-- 
2.43.0