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diff --git a/src/ats/gnunet-service-ats_reservations.h b/src/ats/gnunet-service-ats_reservations.h
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+/*
+     This file is part of GNUnet.
+     (C) 2011 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file ats/gnunet-service-ats_reservations.h
+ * @brief ats service, inbound bandwidth reservation management
+ * @author Christian Grothoff
+ */
+#ifndef GNUNET_SERVICE_ATS_RESERVATIONS_H
+#define GNUNET_SERVICE_ATS_RESERVATIONS_H
+
+#include "gnunet_util_lib.h"
+
+
+/**
+ * Set the amount of bandwidth the other peer could currently transmit
+ * to us (as far as we know) to the given value.
+ *
+ * @param peer identity of the peer
+ * @param bandwidth_in currently available bandwidth from that peer to
+ *        this peer (estimate)
+ */
+void
+GAS_reservations_set_bandwidth (const struct GNUNET_PeerIdentity *peer,
+                                struct GNUNET_BANDWIDTH_Value32NBO
+                                bandwidth_in);
+
+
+/**
+ * Reserve the given amount of incoming bandwidth (in bytes) from the
+ * given peer.  If a reservation is not possible right now, return how
+ * long the client should wait before trying again.
+ *
+ * @param peer peer to reserve bandwidth from
+ * @param amount number of bytes to reserve
+ * @return 0 if the reservation was successful, FOREVER if the
+ *         peer is not connected, otherwise the time to wait
+ *         until the reservation might succeed
+ */
+struct GNUNET_TIME_Relative
+GAS_reservations_reserve (const struct GNUNET_PeerIdentity *peer,
+                          int32_t amount);
+
+
+/**
+ * Initialize reservations subsystem.
+ */
+void
+GAS_reservations_init (void);
+
+
+/**
+ * Shutdown reservations subsystem.
+ */
+void
+GAS_reservations_done (void);
+
+#endif