1 files changed, 85 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xprtrdma.h b/include/linux/sunrpc/xprtrdma.h
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+++ b/include/linux/sunrpc/xprtrdma.h
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+/*
+ * 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
+
+/*
+ * RPC transport identifier for RDMA
+ */
+#define XPRT_TRANSPORT_RDMA	256
+
+/*
+ * rpcbind (v3+) RDMA netid.
+ */
+#define RPCBIND_NETID_RDMA	"rdma"
+
+/*
+ * 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	(32U)
+#define RPCRDMA_MAX_SLOT_TABLE	(256U)
+
+#define RPCRDMA_DEF_INLINE  (1024)	/* default inline max */
+
+#define RPCRDMA_INLINE_PAD_THRESH  (512)/* payload threshold to pad (bytes) */
+
+#define RDMA_RESOLVE_TIMEOUT	(5*HZ)	/* TBD 5 seconds */
+#define RDMA_CONNECT_RETRY_MAX	(2)	/* retries if no listener backlog */
+
+/* memory registration strategies */
+#define RPCRDMA_PERSISTENT_REGISTRATION (1)
+
+enum rpcrdma_memreg {
+	RPCRDMA_BOUNCEBUFFERS = 0,
+	RPCRDMA_REGISTER,
+	RPCRDMA_MEMWINDOWS,
+	RPCRDMA_MEMWINDOWS_ASYNC,
+	RPCRDMA_MTHCAFMR,
+	RPCRDMA_ALLPHYSICAL,
+	RPCRDMA_LAST
+};
+
+#endif /* _LINUX_SUNRPC_XPRTRDMA_H */