/*
 *   fs/cifs/smb2glob.h
 *
 *   Definitions for various global variables and structures
 *
 *   Copyright (C) International Business Machines  Corp., 2002, 2011
 *                 Etersoft, 2012
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *              Jeremy Allison (jra@samba.org)
 *              Pavel Shilovsky (pshilovsky@samba.org) 2012
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 */
#ifndef _SMB2_GLOB_H
#define _SMB2_GLOB_H

#define SMB2_MAGIC_NUMBER 0xFE534D42

/*
 *****************************************************************
 * Constants go here
 *****************************************************************
 */

/*
 * Identifiers for functions that use the open, operation, close pattern
 * in smb2inode.c:smb2_open_op_close()
 */
#define SMB2_OP_SET_DELETE 1
#define SMB2_OP_SET_INFO 2
#define SMB2_OP_QUERY_INFO 3
#define SMB2_OP_QUERY_DIR 4
#define SMB2_OP_MKDIR 5
#define SMB2_OP_RENAME 6
#define SMB2_OP_DELETE 7
#define SMB2_OP_HARDLINK 8
#define SMB2_OP_SET_EOF 9
#define SMB2_OP_RMDIR 10

/* Used when constructing chained read requests. */
#define CHAINED_REQUEST 1
#define START_OF_CHAIN 2
#define END_OF_CHAIN 4
#define RELATED_REQUEST 8

#define SMB2_SIGNATURE_SIZE (16)
#define SMB2_NTLMV2_SESSKEY_SIZE (16)
#define SMB2_HMACSHA256_SIZE (32)
#define SMB2_CMACAES_SIZE (16)
#define SMB3_SIGNKEY_SIZE (16)

/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536

/*
 * Maximum number of credits to keep available.
 * This value is chosen somewhat arbitrarily. The Windows client
 * defaults to 128 credits, the Windows server allows clients up to
 * 512 credits, and the NetApp server does not limit clients at all.
 * Choose a high enough value such that the client shouldn't limit
 * performance.
 */
#define SMB2_MAX_CREDITS_AVAILABLE 32000

#endif	/* _SMB2_GLOB_H */
