/* 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 (2U) #define RPCRDMA_DEF_SLOT_TABLE (128U) #define RPCRDMA_MAX_SLOT_TABLE (256U) #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 */