[PATCH RFC v2 2/3] smb/server: fix minimum SMB2 PDU size

[chenxiaosong.chenxiaosong@linux.dev]

From: ChenXiaoSong <chenxiaosong@kylinos.cn>

The minimum SMB2 PDU size should be updated to the size of
`struct smb_pdu`.

Suggested-by: David Howells <dhowells@redhat.com>
Suggested-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
---
 fs/smb/server/connection.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/smb/server/connection.c b/fs/smb/server/connection.c
index f372486ebcc5..4a8eb4fef763 100644
--- a/fs/smb/server/connection.c
+++ b/fs/smb/server/connection.c
@@ -296,7 +296,7 @@ bool ksmbd_conn_alive(struct ksmbd_conn *conn)
 }
 
 #define SMB1_MIN_SUPPORTED_PDU_SIZE (sizeof(struct smb_pdu))
-#define SMB2_MIN_SUPPORTED_HEADER_SIZE (sizeof(struct smb2_hdr) + 4)
+#define SMB2_MIN_SUPPORTED_PDU_SIZE (sizeof(struct smb2_pdu))
 
 /**
  * ksmbd_conn_handler_loop() - session thread to listen on new smb requests
@@ -396,7 +396,7 @@ int ksmbd_conn_handler_loop(void *p)
 
 		if (((struct smb2_hdr *)smb2_get_msg(conn->request_buf))->ProtocolId ==
 		    SMB2_PROTO_NUMBER) {
-			if (pdu_size < SMB2_MIN_SUPPORTED_HEADER_SIZE)
+			if (pdu_size < SMB2_MIN_SUPPORTED_PDU_SIZE)
 				break;
 		}
 
-- 
2.43.0