SMB3.1.1: correct definition for app_instance_id create contexts

The name lengths were incorrect for two create contexts.
     SMB2_CREATE_APP_INSTANCE_ID
     SMB2_CREATE_APP_INSTANCE_VERSION

Update the definitions for these two to match the protocol specs.

Acked-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: Steve French

fs/ksmbd/smb2pdu.h

@@ -81,22 +81,6 @@ struct create_durable_reconn_v2_req {
 	__le32 Flags;
 } __packed;
 
-struct create_app_inst_id {
-	struct create_context ccontext;
-	__u8 Name[8];
-	__u8 Reserved[8];
-	__u8 AppInstanceId[16];
-} __packed;
-
-struct create_app_inst_id_vers {
-	struct create_context ccontext;
-	__u8 Name[8];
-	__u8 Reserved[2];
-	__u8 Padding[4];
-	__le64 AppInstanceVersionHigh;
-	__le64 AppInstanceVersionLow;
-} __packed;
-
 struct create_alloc_size_req {
 	struct create_context ccontext;
 	__u8   Name[8];

fs/smbfs_common/smb2pdu.h

@@ -1250,6 +1250,26 @@ struct create_disk_id_rsp {
 	__u8  Reserved[16];
 } __packed;
 
+/* See MS-SMB2 2.2.13.2.13 */
+struct create_app_inst_id {
+	struct create_context ccontext;
+	__u8 Name[16];
+	__le32 StructureSize; /* Must be 20 */
+	__u16 Reserved;
+	__u8 AppInstanceId[16];
+} __packed;
+
+/* See MS-SMB2 2.2.13.2.15 */
+struct create_app_inst_id_vers {
+	struct create_context ccontext;
+	__u8 Name[16];
+	__le32 StructureSize; /* Must be 24 */
+	__u16 Reserved;
+	__u32 Padding;
+	__le64 AppInstanceVersionHigh;
+	__le64 AppInstanceVersionLow;
+} __packed;
+
 /* See MS-SMB2 2.2.31 and 2.2.32 */
 struct smb2_ioctl_req {
 	struct smb2_hdr hdr;