diff --git a/usrsctplib/user_uma.h b/usrsctplib/user_uma.h
new file mode 100755
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+++ b/usrsctplib/user_uma.h
@@ -0,0 +1,98 @@
+/*-
+ * Copyright (c) 2009-2010 Brad Penoff
+ * Copyright (c) 2009-2010 Humaira Kamal
+ * Copyright (c) 2011-2012 Irene Ruengeler
+ * Copyright (c) 2011-2012 Michael Tuexen
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 _USER_UMA_H_
+#define _USER_UMA_H_
+
+#define UMA_ZFLAG_FULL		0x40000000	/* Reached uz_maxpages */
+#define UMA_ALIGN_PTR	(sizeof(void *) - 1)	/* Alignment fit for ptr */
+
+/* __Userspace__ All these definitions will change for
+userspace Universal Memory Allocator (UMA). These are included
+for reference purposes and to avoid compile errors for the time being.
+*/
+typedef int (*uma_ctor)(void *mem, int size, void *arg, int flags);
+typedef void (*uma_dtor)(void *mem, int size, void *arg);
+typedef int (*uma_init)(void *mem, int size, int flags);
+typedef void (*uma_fini)(void *mem, int size);
+typedef struct uma_zone * uma_zone_t;
+typedef struct uma_keg * uma_keg_t;
+
+struct uma_cache {
+    int stub; /* TODO __Userspace__ */
+};
+
+struct uma_keg {
+    int stub; /* TODO __Userspace__ */
+};
+
+struct uma_zone {
+	char		*uz_name;	/* Text name of the zone */
+	struct mtx	*uz_lock;	/* Lock for the zone (keg's lock) */
+	uma_keg_t	uz_keg;		/* Our underlying Keg */
+
+	LIST_ENTRY(uma_zone)	uz_link;	/* List of all zones in keg */
+	LIST_HEAD(,uma_bucket)	uz_full_bucket;	/* full buckets */
+	LIST_HEAD(,uma_bucket)	uz_free_bucket;	/* Buckets for frees */
+
+	uma_ctor	uz_ctor;	/* Constructor for each allocation */
+	uma_dtor	uz_dtor;	/* Destructor */
+	uma_init	uz_init;	/* Initializer for each item */
+	uma_fini	uz_fini;	/* Discards memory */
+
+	u_int64_t	uz_allocs;	/* Total number of allocations */
+	u_int64_t	uz_frees;	/* Total number of frees */
+	u_int64_t	uz_fails;	/* Total number of alloc failures */
+	uint16_t	uz_fills;	/* Outstanding bucket fills */
+	uint16_t	uz_count;	/* Highest value ub_ptr can have */
+
+	/*
+	 * This HAS to be the last item because we adjust the zone size
+	 * based on NCPU and then allocate the space for the zones.
+	 */
+	struct uma_cache	uz_cpu[1];	/* Per cpu caches */
+};
+
+/* Prototype */
+uma_zone_t
+uma_zcreate(char *name, size_t size, uma_ctor ctor, uma_dtor dtor,
+	    uma_init uminit, uma_fini fini, int align, u_int32_t flags);
+
+
+#define uma_zone_set_max(zone, number) /* stub TODO __Userspace__ */
+
+uma_zone_t
+uma_zcreate(char *name, size_t size, uma_ctor ctor, uma_dtor dtor,
+	    uma_init uminit, uma_fini fini, int align, u_int32_t flags)
+{
+    return NULL; /* stub TODO __Userspace__. Also place implementation in a separate .c file */
+
+}
+#endif