1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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41 #ifndef _LINUX_SUNRPC_XPRTRDMA_H
42 #define _LINUX_SUNRPC_XPRTRDMA_H
45 * Constants. Max RPC/NFS header is big enough to account for
46 * additional marshaling buffers passed down by Linux client.
48 * RDMA header is currently fixed max size, and is big enough for a
49 * fully-chunked NFS message (read chunks are the largest). Note only
50 * a single chunk type per message is supported currently.
52 #define RPCRDMA_MIN_SLOT_TABLE (4U)
53 #define RPCRDMA_DEF_SLOT_TABLE (128U)
54 #define RPCRDMA_MAX_SLOT_TABLE (16384U)
56 #define RPCRDMA_MIN_INLINE (1024) /* min inline thresh */
57 #define RPCRDMA_DEF_INLINE (4096) /* default inline thresh */
58 #define RPCRDMA_MAX_INLINE (65536) /* max inline thresh */
60 /* Memory registration strategies, by number.
61 * This is part of a kernel / user space API. Do not remove. */
63 RPCRDMA_BOUNCEBUFFERS = 0,
66 RPCRDMA_MEMWINDOWS_ASYNC,
73 #endif /* _LINUX_SUNRPC_XPRTRDMA_H */