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c3a57ed7 TT |
1 | /* |
2 | * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the BSD-type | |
8 | * license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * | |
17 | * Redistributions in binary form must reproduce the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer in the documentation and/or other materials provided | |
20 | * with the distribution. | |
21 | * | |
22 | * Neither the name of the Network Appliance, Inc. nor the names of | |
23 | * its contributors may be used to endorse or promote products | |
24 | * derived from this software without specific prior written | |
25 | * permission. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
31 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
32 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
33 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
34 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
35 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
36 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
37 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
38 | */ | |
39 | ||
40 | #ifndef _LINUX_SUNRPC_XPRTRDMA_H | |
41 | #define _LINUX_SUNRPC_XPRTRDMA_H | |
42 | ||
c3a57ed7 TT |
43 | /* |
44 | * rpcbind (v3+) RDMA netid. | |
45 | */ | |
46 | #define RPCBIND_NETID_RDMA "rdma" | |
47 | ||
48 | /* | |
49 | * Constants. Max RPC/NFS header is big enough to account for | |
50 | * additional marshaling buffers passed down by Linux client. | |
51 | * | |
52 | * RDMA header is currently fixed max size, and is big enough for a | |
53 | * fully-chunked NFS message (read chunks are the largest). Note only | |
54 | * a single chunk type per message is supported currently. | |
55 | */ | |
56 | #define RPCRDMA_MIN_SLOT_TABLE (2U) | |
57 | #define RPCRDMA_DEF_SLOT_TABLE (32U) | |
58 | #define RPCRDMA_MAX_SLOT_TABLE (256U) | |
59 | ||
60 | #define RPCRDMA_DEF_INLINE (1024) /* default inline max */ | |
61 | ||
62 | #define RPCRDMA_INLINE_PAD_THRESH (512)/* payload threshold to pad (bytes) */ | |
63 | ||
c3a57ed7 TT |
64 | /* memory registration strategies */ |
65 | #define RPCRDMA_PERSISTENT_REGISTRATION (1) | |
66 | ||
67 | enum rpcrdma_memreg { | |
68 | RPCRDMA_BOUNCEBUFFERS = 0, | |
69 | RPCRDMA_REGISTER, | |
70 | RPCRDMA_MEMWINDOWS, | |
71 | RPCRDMA_MEMWINDOWS_ASYNC, | |
72 | RPCRDMA_MTHCAFMR, | |
fe9053b3 | 73 | RPCRDMA_FRMR, |
c3a57ed7 TT |
74 | RPCRDMA_ALLPHYSICAL, |
75 | RPCRDMA_LAST | |
76 | }; | |
77 | ||
78 | #endif /* _LINUX_SUNRPC_XPRTRDMA_H */ |