+#ifndef __LNET_TYPES_H__
+#define __LNET_TYPES_H__
+
+/** \addtogroup lnet
+ * @{ */
+
+#include <libcfs/types.h>
+
+/** \addtogroup lnet_addr
+ * @{ */
+
+#define LNET_VERSION "0.7.0"
+
+/** Portal reserved for LNet's own use.
+ * \see lustre/include/lustre/lustre_idl.h for Lustre portal assignments.
+ */
+#define LNET_RESERVED_PORTAL 0
+
+/**
+ * Address of an end-point in an LNet network.
+ *
+ * A node can have multiple end-points and hence multiple addresses.
+ * An LNet network can be a simple network (e.g. tcp0) or a network of
+ * LNet networks connected by LNet routers. Therefore an end-point address
+ * has two parts: network ID, and address within a network.
+ *
+ * \see LNET_NIDNET, LNET_NIDADDR, and LNET_MKNID.
+ */
+typedef __u64 lnet_nid_t;
+/**
+ * ID of a process in a node. Shortened as PID to distinguish from
+ * lnet_process_id_t, the global process ID.
+ */
+typedef __u32 lnet_pid_t;
+
+/** wildcard NID that matches any end-point address */
+#define LNET_NID_ANY ((lnet_nid_t) -1)
+/** wildcard PID that matches any lnet_pid_t */
+#define LNET_PID_ANY ((lnet_pid_t) -1)
+
+#define LNET_PID_RESERVED 0xf0000000 /* reserved bits in PID */
+#define LNET_PID_USERFLAG 0x80000000 /* set in userspace peers */
+#define LNET_PID_LUSTRE 12345
+
+#define LNET_TIME_FOREVER (-1)
+
+/* how an LNET NID encodes net:address */
+/** extract the address part of an lnet_nid_t */
+
+static inline __u32 LNET_NIDADDR(lnet_nid_t nid)
+{
+ return nid & 0xffffffff;
+}
+
+static inline __u32 LNET_NIDNET(lnet_nid_t nid)
+{
+ return (nid >> 32) & 0xffffffff;
+}
+
+static inline lnet_nid_t LNET_MKNID(__u32 net, __u32 addr)
+{
+ return (((__u64)net) << 32) | addr;
+}
+
+static inline __u32 LNET_NETNUM(__u32 net)
+{
+ return net & 0xffff;
+}
+
+static inline __u32 LNET_NETTYP(__u32 net)
+{
+ return (net >> 16) & 0xffff;
+}
+
+static inline __u32 LNET_MKNET(__u32 type, __u32 num)
+{
+ return (type << 16) | num;
+}