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141891f472
Add mount option "max_credits" to allow setting maximum SMB3 credits to any value from 10 to 64000 (default is 32000). This can be useful to workaround servers with problems allocating credits, or to throttle the client to use smaller amount of simultaneous i/o or to workaround server performance issues. Also adds a cap, so that even if the server granted us more than 65000 credits due to a server bug, we would not use that many. Signed-off-by: Steve French <steve.french@primarydata.com>
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/*
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* fs/cifs/smb2glob.h
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*
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* Definitions for various global variables and structures
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*
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* Copyright (C) International Business Machines Corp., 2002, 2011
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* Etersoft, 2012
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* Author(s): Steve French (sfrench@us.ibm.com)
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* Jeremy Allison (jra@samba.org)
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* Pavel Shilovsky (pshilovsky@samba.org) 2012
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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*/
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#ifndef _SMB2_GLOB_H
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#define _SMB2_GLOB_H
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#define SMB2_MAGIC_NUMBER 0xFE534D42
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/*
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*****************************************************************
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* Constants go here
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*****************************************************************
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*/
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/*
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* Identifiers for functions that use the open, operation, close pattern
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* in smb2inode.c:smb2_open_op_close()
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*/
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#define SMB2_OP_SET_DELETE 1
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#define SMB2_OP_SET_INFO 2
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#define SMB2_OP_QUERY_INFO 3
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#define SMB2_OP_QUERY_DIR 4
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#define SMB2_OP_MKDIR 5
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#define SMB2_OP_RENAME 6
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#define SMB2_OP_DELETE 7
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#define SMB2_OP_HARDLINK 8
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#define SMB2_OP_SET_EOF 9
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#define SMB2_OP_RMDIR 10
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/* Used when constructing chained read requests. */
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#define CHAINED_REQUEST 1
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#define START_OF_CHAIN 2
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#define END_OF_CHAIN 4
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#define RELATED_REQUEST 8
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#define SMB2_SIGNATURE_SIZE (16)
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#define SMB2_NTLMV2_SESSKEY_SIZE (16)
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#define SMB2_HMACSHA256_SIZE (32)
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#define SMB2_CMACAES_SIZE (16)
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#define SMB3_SIGNKEY_SIZE (16)
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/* Maximum buffer size value we can send with 1 credit */
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#define SMB2_MAX_BUFFER_SIZE 65536
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#endif /* _SMB2_GLOB_H */
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