smb3: Add defines for new information level, FileIdInformation

See MS-FSCC 2.4.43.  Valid to be quried from most
Windows servers (among others).
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>

fs/cifs/smb2pdu.h

@@ -1519,6 +1519,7 @@ struct smb3_fs_vol_info {
 #define FILE_NORMALIZED_NAME_INFORMATION 48
 #define FILEID_GLOBAL_TX_DIRECTORY_INFORMATION 50
 #define FILE_STANDARD_LINK_INFORMATION	54
+#define FILE_ID_INFORMATION		59
 
 struct smb2_file_internal_info {
 	__le64 IndexNumber;
@@ -1593,6 +1594,13 @@ struct smb2_file_network_open_info {
 	__le32 Reserved;
 } __packed; /* level 34 Query also similar returned in close rsp and open rsp */
 
+/* See MS-FSCC 2.4.43 */
+struct smb2_file_id_information {
+	__le64	VolumeSerialNumber;
+	__u64  PersistentFileId; /* opaque endianness */
+	__u64  VolatileFileId; /* opaque endianness */
+} __packed; /* level 59 */
+
 extern char smb2_padding[7];
 
 /* equivalent of the contents of SMB3.1.1 POSIX open context response */