Index: uspace/lib/c/include/inet/iplink.h
===================================================================
--- uspace/lib/c/include/inet/iplink.h	(revision bc385789c90bd429765abebdb70ac2057bcf31db)
+++ uspace/lib/c/include/inet/iplink.h	(revision bc385789c90bd429765abebdb70ac2057bcf31db)
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2012 Jiri Svoboda
+ * All rights reserved.
+ *
+ * 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 name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBC_INET_IPLINK_H_
+#define LIBC_INET_IPLINK_H_
+
+#include <async.h>
+#include <sys/types.h>
+
+struct iplink_ev_ops;
+
+typedef struct {
+	async_sess_t *sess;
+	struct iplink_ev_ops *ev_ops;
+} iplink_t;
+
+typedef struct {
+	uint32_t ipv4;
+} iplink_addr_t;
+
+/** IP link Service Data Unit */
+typedef struct {
+	/** Source address */
+	iplink_addr_t src;
+	/** Destination address */
+	iplink_addr_t dest;
+	/** Serialized IP packet */
+	void *data;
+	/** Size of @c data in bytes */
+	size_t size;
+} iplink_sdu_t;
+
+typedef struct iplink_ev_ops {
+	int (*recv)(iplink_t *, iplink_sdu_t *);
+} iplink_ev_ops_t;
+
+extern int iplink_open(async_sess_t *, iplink_ev_ops_t *, iplink_t **);
+extern void iplink_close(iplink_t *);
+extern int iplink_send(iplink_t *, iplink_sdu_t *);
+extern int iplink_get_mtu(iplink_t *, size_t *);
+
+#endif
+
+/** @}
+ */
Index: uspace/lib/c/include/inet/iplink_srv.h
===================================================================
--- uspace/lib/c/include/inet/iplink_srv.h	(revision bc385789c90bd429765abebdb70ac2057bcf31db)
+++ uspace/lib/c/include/inet/iplink_srv.h	(revision bc385789c90bd429765abebdb70ac2057bcf31db)
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2012 Jiri Svoboda
+ * All rights reserved.
+ *
+ * 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 name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBC_INET_IPLINK_SRV_H_
+#define LIBC_INET_IPLINK_SRV_H_
+
+#include <async.h>
+#include <sys/types.h>
+
+struct iplink_ops;
+
+typedef struct {
+	struct iplink_ops *ops;
+	void *arg;
+} iplink_srv_t;
+
+typedef struct {
+	iplink_srv_t *srv;
+	async_sess_t *client_sess;
+} iplink_conn_t;
+
+typedef struct {
+	uint32_t ipv4;
+} iplink_srv_addr_t;
+
+/** IP link Service Data Unit */
+typedef struct {
+	/** Source address */
+	iplink_srv_addr_t src;
+	/** Destination address */
+	iplink_srv_addr_t dest;
+	/** Serialized IP packet */
+	void *data;
+	/** Size of @c data in bytes */
+	size_t size;
+} iplink_srv_sdu_t;
+
+typedef struct iplink_ops {
+	int (*open)(iplink_conn_t *);
+	int (*close)(iplink_conn_t *);
+	int (*send)(iplink_conn_t *, iplink_srv_sdu_t *);
+	int (*get_mtu)(iplink_conn_t *, size_t *);
+} iplink_ops_t;
+
+extern int iplink_conn(ipc_callid_t, ipc_call_t *, void *);
+extern int iplink_ev_recv(iplink_conn_t *, iplink_srv_sdu_t *);
+
+#endif
+
+/** @}
+ */