diff --git a/include/rdma/ib_smi.h b/include/rdma/ib_smi.h
new file mode 100644
index 0000000..87f6073
--- /dev/null
+++ b/include/rdma/ib_smi.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
+ * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
+ * Copyright (c) 2004 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation.  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
+ * OpenIB.org BSD 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: ib_smi.h 1389 2004-12-27 22:56:47Z roland $
+ */
+
+#if !defined( IB_SMI_H )
+#define IB_SMI_H
+
+#include <rdma/ib_mad.h>
+
+#define IB_SMP_DATA_SIZE			64
+#define IB_SMP_MAX_PATH_HOPS			64
+
+struct ib_smp {
+	u8	base_version;
+	u8	mgmt_class;
+	u8	class_version;
+	u8	method;
+	__be16	status;
+	u8	hop_ptr;
+	u8	hop_cnt;
+	__be64	tid;
+	__be16	attr_id;
+	__be16	resv;
+	__be32	attr_mod;
+	__be64	mkey;
+	__be16	dr_slid;
+	__be16	dr_dlid;
+	u8	reserved[28];
+	u8	data[IB_SMP_DATA_SIZE];
+	u8	initial_path[IB_SMP_MAX_PATH_HOPS];
+	u8	return_path[IB_SMP_MAX_PATH_HOPS];
+} __attribute__ ((packed));
+
+#define IB_SMP_DIRECTION			__constant_htons(0x8000)
+
+/* Subnet management attributes */
+#define IB_SMP_ATTR_NOTICE			__constant_htons(0x0002)
+#define IB_SMP_ATTR_NODE_DESC			__constant_htons(0x0010)
+#define IB_SMP_ATTR_NODE_INFO			__constant_htons(0x0011)
+#define IB_SMP_ATTR_SWITCH_INFO			__constant_htons(0x0012)
+#define IB_SMP_ATTR_GUID_INFO			__constant_htons(0x0014)
+#define IB_SMP_ATTR_PORT_INFO			__constant_htons(0x0015)
+#define IB_SMP_ATTR_PKEY_TABLE			__constant_htons(0x0016)
+#define IB_SMP_ATTR_SL_TO_VL_TABLE		__constant_htons(0x0017)
+#define IB_SMP_ATTR_VL_ARB_TABLE		__constant_htons(0x0018)
+#define IB_SMP_ATTR_LINEAR_FORWARD_TABLE	__constant_htons(0x0019)
+#define IB_SMP_ATTR_RANDOM_FORWARD_TABLE	__constant_htons(0x001A)
+#define IB_SMP_ATTR_MCAST_FORWARD_TABLE		__constant_htons(0x001B)
+#define IB_SMP_ATTR_SM_INFO			__constant_htons(0x0020)
+#define IB_SMP_ATTR_VENDOR_DIAG			__constant_htons(0x0030)
+#define IB_SMP_ATTR_LED_INFO			__constant_htons(0x0031)
+#define IB_SMP_ATTR_VENDOR_MASK			__constant_htons(0xFF00)
+
+static inline u8
+ib_get_smp_direction(struct ib_smp *smp)
+{
+	return ((smp->status & IB_SMP_DIRECTION) == IB_SMP_DIRECTION);
+}
+
+#endif /* IB_SMI_H */