1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * This software is available to you under a choice of one of two 6*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU 7*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file 8*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the BSD-type 9*4882a593Smuzhiyun * license below: 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or without 12*4882a593Smuzhiyun * modification, are permitted provided that the following conditions 13*4882a593Smuzhiyun * are met: 14*4882a593Smuzhiyun * 15*4882a593Smuzhiyun * Redistributions of source code must retain the above copyright 16*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer. 17*4882a593Smuzhiyun * 18*4882a593Smuzhiyun * Redistributions in binary form must reproduce the above 19*4882a593Smuzhiyun * copyright notice, this list of conditions and the following 20*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials provided 21*4882a593Smuzhiyun * with the distribution. 22*4882a593Smuzhiyun * 23*4882a593Smuzhiyun * Neither the name of the Network Appliance, Inc. nor the names of 24*4882a593Smuzhiyun * its contributors may be used to endorse or promote products 25*4882a593Smuzhiyun * derived from this software without specific prior written 26*4882a593Smuzhiyun * permission. 27*4882a593Smuzhiyun * 28*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29*4882a593Smuzhiyun * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30*4882a593Smuzhiyun * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31*4882a593Smuzhiyun * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32*4882a593Smuzhiyun * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33*4882a593Smuzhiyun * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34*4882a593Smuzhiyun * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35*4882a593Smuzhiyun * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36*4882a593Smuzhiyun * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37*4882a593Smuzhiyun * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38*4882a593Smuzhiyun * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39*4882a593Smuzhiyun */ 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #ifndef _LINUX_SUNRPC_XPRTRDMA_H 42*4882a593Smuzhiyun #define _LINUX_SUNRPC_XPRTRDMA_H 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun /* 45*4882a593Smuzhiyun * Constants. Max RPC/NFS header is big enough to account for 46*4882a593Smuzhiyun * additional marshaling buffers passed down by Linux client. 47*4882a593Smuzhiyun * 48*4882a593Smuzhiyun * RDMA header is currently fixed max size, and is big enough for a 49*4882a593Smuzhiyun * fully-chunked NFS message (read chunks are the largest). Note only 50*4882a593Smuzhiyun * a single chunk type per message is supported currently. 51*4882a593Smuzhiyun */ 52*4882a593Smuzhiyun #define RPCRDMA_MIN_SLOT_TABLE (4U) 53*4882a593Smuzhiyun #define RPCRDMA_DEF_SLOT_TABLE (128U) 54*4882a593Smuzhiyun #define RPCRDMA_MAX_SLOT_TABLE (16384U) 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun #define RPCRDMA_MIN_INLINE (1024) /* min inline thresh */ 57*4882a593Smuzhiyun #define RPCRDMA_DEF_INLINE (4096) /* default inline thresh */ 58*4882a593Smuzhiyun #define RPCRDMA_MAX_INLINE (65536) /* max inline thresh */ 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun /* Memory registration strategies, by number. 61*4882a593Smuzhiyun * This is part of a kernel / user space API. Do not remove. */ 62*4882a593Smuzhiyun enum rpcrdma_memreg { 63*4882a593Smuzhiyun RPCRDMA_BOUNCEBUFFERS = 0, 64*4882a593Smuzhiyun RPCRDMA_REGISTER, 65*4882a593Smuzhiyun RPCRDMA_MEMWINDOWS, 66*4882a593Smuzhiyun RPCRDMA_MEMWINDOWS_ASYNC, 67*4882a593Smuzhiyun RPCRDMA_MTHCAFMR, 68*4882a593Smuzhiyun RPCRDMA_FRWR, 69*4882a593Smuzhiyun RPCRDMA_ALLPHYSICAL, 70*4882a593Smuzhiyun RPCRDMA_LAST 71*4882a593Smuzhiyun }; 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun #endif /* _LINUX_SUNRPC_XPRTRDMA_H */ 74