/*
This file is part of GNUnet.
- (C) 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2011 GNUnet e.V.
- 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 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 of the License,
+ 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.
+ Affero General Public License for more details.
*/
-
/**
* @file ats/gnunet-service-ats_reservations.c
* @brief ats service, inbound bandwidth reservation management
*/
#include "platform.h"
#include "gnunet-service-ats_reservations.h"
+#include "gnunet-service-ats.h"
+#include "ats.h"
/**
- * Number of seconds that available bandwidth carries over
- * (can accumulate).
+ * Number of seconds that available bandwidth carries over
+ * (can accumulate). Note that the
+ * test_ats_reservation_api test depends on this value!
*/
#define MAX_BANDWIDTH_CARRY_S 5
/**
- * Map of peer identities to 'struct GNUNET_BANDWIDTH_Tracker *'s
+ * Map of peer identities to `struct GNUNET_BANDWIDTH_Tracker *`s
*/
-static struct GNUNET_CONTAINER_MultiHashMap *trackers;
+static struct GNUNET_CONTAINER_MultiPeerMap *trackers;
/**
* 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)
+static struct GNUNET_TIME_Relative
+reservations_reserve (const struct GNUNET_PeerIdentity *peer,
+ int32_t amount)
{
struct GNUNET_BANDWIDTH_Tracker *tracker;
struct GNUNET_TIME_Relative ret;
- tracker = GNUNET_CONTAINER_multihashmap_get (trackers,
- &peer->hashPubKey);
+ tracker = GNUNET_CONTAINER_multipeermap_get (trackers,
+ peer);
if (NULL == tracker)
- return GNUNET_TIME_UNIT_FOREVER_REL;
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Not connected, allowing reservation of %d bytes\n",
+ (int) amount);
+ return GNUNET_TIME_UNIT_ZERO; /* not connected, satisfy now */
+ }
if (amount >= 0)
{
- ret = GNUNET_BANDWIDTH_tracker_get_delay (tracker,
- amount);
- if (ret.rel_value > 0)
+ ret = GNUNET_BANDWIDTH_tracker_get_delay (tracker, amount);
+ if (ret.rel_value_us > 0)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Delay to satisfy reservation for %d bytes is %s\n",
+ (int) amount,
+ GNUNET_STRINGS_relative_time_to_string (ret,
+ GNUNET_YES));
return ret;
+ }
}
- GNUNET_break (GNUNET_NO == /* no == not above limit */
- GNUNET_BANDWIDTH_tracker_consume (tracker, amount));
+ (void) GNUNET_BANDWIDTH_tracker_consume (tracker, amount);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Reserved %d bytes\n",
+ (int) amount);
return GNUNET_TIME_UNIT_ZERO;
}
/**
* 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)
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
struct GNUNET_BANDWIDTH_Tracker *tracker;
- tracker = GNUNET_CONTAINER_multihashmap_get (trackers,
- &peer->hashPubKey);
+ tracker = GNUNET_CONTAINER_multipeermap_get (trackers, peer);
if (0 == ntohl (bandwidth_in.value__))
{
+ if (NULL == tracker)
+ return;
GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (trackers,
- &peer->hashPubKey,
- tracker));
+ GNUNET_CONTAINER_multipeermap_remove (trackers,
+ peer,
+ tracker));
GNUNET_free (tracker);
return;
}
if (NULL == tracker)
{
- tracker = GNUNET_malloc (sizeof (struct GNUNET_BANDWIDTH_Tracker));
+ tracker = GNUNET_new (struct GNUNET_BANDWIDTH_Tracker);
GNUNET_BANDWIDTH_tracker_init (tracker,
- bandwidth_in,
- MAX_BANDWIDTH_CARRY_S);
- GNUNET_CONTAINER_multihashmap_put (trackers,
- &peer->hashPubKey,
- tracker,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+ NULL,
+ NULL,
+ bandwidth_in,
+ MAX_BANDWIDTH_CARRY_S);
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_put (trackers,
+ peer,
+ tracker,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
return;
}
GNUNET_BANDWIDTH_tracker_update_quota (tracker,
- bandwidth_in);
+ bandwidth_in);
+}
+
+
+/**
+ * Handle 'reservation request' messages from clients.
+ *
+ * @param client client that sent the request
+ * @param msg the request message
+ */
+void
+GAS_handle_reservation_request (struct GNUNET_SERVICE_Client *client,
+ const struct ReservationRequestMessage *msg)
+{
+ struct GNUNET_MQ_Envelope *env;
+ struct ReservationResultMessage *result;
+ int32_t amount;
+ struct GNUNET_TIME_Relative res_delay;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received RESERVATION_REQUEST message\n");
+ amount = (int32_t) ntohl (msg->amount);
+ res_delay = reservations_reserve (&msg->peer, amount);
+ if (res_delay.rel_value_us > 0)
+ amount = 0;
+ env = GNUNET_MQ_msg (result,
+ GNUNET_MESSAGE_TYPE_ATS_RESERVATION_RESULT);
+ result->amount = htonl (amount);
+ result->peer = msg->peer;
+ result->res_delay = GNUNET_TIME_relative_hton (res_delay);
+ GNUNET_STATISTICS_update (GSA_stats,
+ "# reservation requests processed",
+ 1,
+ GNUNET_NO);
+ GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (client),
+ env);
}
void
GAS_reservations_init ()
{
- trackers = GNUNET_CONTAINER_multihashmap_create(128);
+ trackers = GNUNET_CONTAINER_multipeermap_create (128,
+ GNUNET_NO);
}
*
* @param cls NULL
* @param key peer identity (unused)
- * @param value the 'struct GNUNET_BANDWIDTH_Tracker' to free
- * @return GNUNET_OK (continue to iterate)
+ * @param value the `struct GNUNET_BANDWIDTH_Tracker` to free
+ * @return #GNUNET_OK (continue to iterate)
*/
-static int
+static int
free_tracker (void *cls,
- const GNUNET_HashCode * key,
+ const struct GNUNET_PeerIdentity *key,
void *value)
{
- struct GNUNET_BANDWIDTH_Tracker *tracker = cls;
+ struct GNUNET_BANDWIDTH_Tracker *tracker = value;
+
GNUNET_free (tracker);
return GNUNET_OK;
}
void
GAS_reservations_done ()
{
- GNUNET_CONTAINER_multihashmap_iterate (trackers, &free_tracker, NULL);
- GNUNET_CONTAINER_multihashmap_destroy (trackers);
+ GNUNET_CONTAINER_multipeermap_iterate (trackers,
+ &free_tracker,
+ NULL);
+ GNUNET_CONTAINER_multipeermap_destroy (trackers);
}
/* end of gnunet-service-ats_reservations.c */
projects / oweals / gnunet.git / blobdiff