/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright ( c ) 2003 - 2007 Network Appliance , Inc . All rights reserved .
*
* This software is available to you under a choice of one of two
* licenses . You may choose to be licensed under the terms of the GNU
* General Public License ( GPL ) Version 2 , available from the file
* COPYING in the main directory of this source tree , or the BSD - type
* license below :
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
*
* Redistributions in binary form must reproduce the above
* copyright notice , this list of conditions and the following
* disclaimer in the documentation and / or other materials provided
* with the distribution .
*
* Neither the name of the Network Appliance , Inc . nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT , INDIRECT , INCIDENTAL ,
* SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING , BUT NOT
* LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE ,
* DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR TORT
* ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
*/
#ifndef _LINUX_SUNRPC_XPRTRDMA_H
#define _LINUX_SUNRPC_XPRTRDMA_H
/*
* Constants . Max RPC / NFS header is big enough to account for
* additional marshaling buffers passed down by Linux client .
*
* RDMA header is currently fixed max size , and is big enough for a
* fully - chunked NFS message ( read chunks are the largest ) . Note only
* a single chunk type per message is supported currently .
*/
#define RPCRDMA_MIN_SLOT_TABLE (4 U)
#define RPCRDMA_DEF_SLOT_TABLE (128 U)
#define RPCRDMA_MAX_SLOT_TABLE (16384 U)
#define RPCRDMA_MIN_INLINE (1024 ) /* min inline thresh */
#define RPCRDMA_DEF_INLINE (4096 ) /* default inline thresh */
#define RPCRDMA_MAX_INLINE (65536 ) /* max inline thresh */
/* Memory registration strategies, by number.
* This is part of a kernel / user space API. Do not remove. */
enum rpcrdma_memreg {
RPCRDMA_BOUNCEBUFFERS = 0 ,
RPCRDMA_REGISTER,
RPCRDMA_MEMWINDOWS,
RPCRDMA_MEMWINDOWS_ASYNC,
RPCRDMA_MTHCAFMR,
RPCRDMA_FRWR,
RPCRDMA_ALLPHYSICAL,
RPCRDMA_LAST
};
#endif /* _LINUX_SUNRPC_XPRTRDMA_H */
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