diff --git a/inc/pbuf.h b/inc/pbuf.h
index bb99620..8535246 100644
--- a/inc/pbuf.h
+++ b/inc/pbuf.h
@@ -97,6 +97,19 @@
 }
 
 
+static inline void pbuf_reset(pbuf_t *p)
+{
+	p->payload = p->payload_memory;
+	p->capacity = p->pool->payload_capacity;
+}
+
+
+static inline uint32_t pbuf_offset(pbuf_t *p)
+{
+	return p->payload - p->payload_memory;
+}
+
+
 static inline pbuf_t* pbuf_alloc(pbuf_pool_t *pool)
 {
 	assert(pool);
@@ -108,8 +121,7 @@
 		pool->free_list = pool->free_list->next;		//remove it from the list
 		pool->pbufs_available--;
 		
-		p->payload = p->payload_memory;
-		p->capacity = pool->payload_capacity;
+		pbuf_reset(p);
 	}
 
 	return p;