/*
- This file is part of GNUnet.
- (C) 2010,2011 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 include/gnunet_ats_service.h
+ This file is part of GNUnet.
+ Copyright (C) 2010, 2011, 2016 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+/**
+ * @file ats/ats_api_performance.c
* @brief automatic transport selection and outbound bandwidth determination
* @author Christian Grothoff
* @author Matthias Wachs
- */
+ */
#include "platform.h"
#include "gnunet_ats_service.h"
+#include "ats.h"
+
+
+#define LOG(kind,...) GNUNET_log_from(kind, "ats-performance-api", __VA_ARGS__)
+
+
+/**
+ * Linked list of pending reservations.
+ */
+struct GNUNET_ATS_ReservationContext
+{
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_ReservationContext *next;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_ReservationContext *prev;
+
+ /**
+ * Target peer.
+ */
+ struct GNUNET_PeerIdentity peer;
+
+ /**
+ * Desired reservation
+ */
+ int32_t size;
+
+ /**
+ * Function to call on result.
+ */
+ GNUNET_ATS_ReservationCallback rcb;
+
+ /**
+ * Closure for @e rcb
+ */
+ void *rcb_cls;
+
+ /**
+ * Do we need to undo this reservation if it succeeded? Set to
+ * #GNUNET_YES if a reservation is cancelled. (at that point, 'info'
+ * is also set to NULL; however, info will ALSO be NULL for the
+ * reservation context that is created to undo the original request,
+ * so 'info' being NULL cannot be used to check if undo is
+ * required).
+ */
+ int undo;
+};
+
+
+/**
+ * Linked list of pending reservations.
+ */
+struct GNUNET_ATS_AddressListHandle
+{
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_AddressListHandle *next;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_AddressListHandle *prev;
+
+ /**
+ * Performance handle
+ */
+ struct GNUNET_ATS_PerformanceHandle *ph;
+
+ /**
+ * Callback
+ */
+ GNUNET_ATS_AddressInformationCallback cb;
+
+ /**
+ * Callback closure for @e cb
+ */
+ void *cb_cls;
+
+ /**
+ * Target peer.
+ */
+ struct GNUNET_PeerIdentity peer;
+
+ /**
+ * Return all or specific peer only
+ */
+ int all_peers;
+
+ /**
+ * Return all or used address only
+ */
+ int all_addresses;
+
+ /**
+ * Request multiplexing
+ */
+ uint32_t id;
+};
-/* ******************************** Performance API ***************************** */
/**
* ATS Handle to obtain and/or modify performance information.
*/
struct GNUNET_ATS_PerformanceHandle
{
+
+ /**
+ * Our configuration.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Callback to invoke when an address has performance changes.
+ */
+ GNUNET_ATS_AddressInformationCallback addr_info_cb;
+
+ /**
+ * Closure for @e addr_info_cb.
+ */
+ void *addr_info_cb_cls;
+
+ /**
+ * Connection to ATS service.
+ */
+ struct GNUNET_MQ_Handle *mq;
+
+ /**
+ * Head of linked list of pending reservation requests.
+ */
+ struct GNUNET_ATS_ReservationContext *reservation_head;
+
+ /**
+ * Tail of linked list of pending reservation requests.
+ */
+ struct GNUNET_ATS_ReservationContext *reservation_tail;
+
+ /**
+ * Head of linked list of pending address list requests.
+ */
+ struct GNUNET_ATS_AddressListHandle *addresslist_head;
+
+ /**
+ * Tail of linked list of pending address list requests.
+ */
+ struct GNUNET_ATS_AddressListHandle *addresslist_tail;
+
+ /**
+ * Current request for transmission to ATS.
+ */
+ struct GNUNET_CLIENT_TransmitHandle *th;
+
+ /**
+ * Task to trigger reconnect.
+ */
+ struct GNUNET_SCHEDULER_Task *task;
+
+ /**
+ * Reconnect backoff delay.
+ */
+ struct GNUNET_TIME_Relative backoff;
+
+ /**
+ * Monitor request multiplexing
+ */
+ uint32_t monitor_id;
+
+ /**
+ * Request multiplexing
+ */
+ uint32_t id;
+
+ /**
+ * Is the receive loop active?
+ */
+ int in_receive;
};
+/**
+ * Re-establish the connection to the ATS service.
+ *
+ * @param ph handle to use to re-connect.
+ */
+static void
+reconnect (struct GNUNET_ATS_PerformanceHandle *ph);
+
+
+/**
+ * Re-establish the connection to the ATS service.
+ *
+ * @param cls handle to use to re-connect.
+ */
+static void
+reconnect_task (void *cls)
+{
+ struct GNUNET_ATS_PerformanceHandle *ph = cls;
+
+ ph->task = NULL;
+ reconnect (ph);
+}
+
+
+/**
+ * Reconnect to the ATS service, something went wrong.
+ *
+ * @param ph handle to reconnect
+ */
+static void
+do_reconnect (struct GNUNET_ATS_PerformanceHandle *ph)
+{
+ struct GNUNET_ATS_ReservationContext *rc;
+ struct GNUNET_ATS_AddressListHandle *alh;
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_zero;
+
+ if (NULL != ph->mq)
+ {
+ GNUNET_MQ_destroy (ph->mq);
+ ph->mq = NULL;
+ }
+ while (NULL != (rc = ph->reservation_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (ph->reservation_head,
+ ph->reservation_tail,
+ rc);
+ if (NULL != rc->rcb)
+ rc->rcb (rc->rcb_cls,
+ NULL,
+ 0,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+ GNUNET_free (rc);
+ }
+ bandwidth_zero.value__ = htonl (0);
+ while (NULL != (alh = ph->addresslist_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (ph->addresslist_head,
+ ph->addresslist_tail,
+ alh);
+ if (NULL != alh->cb)
+ alh->cb (alh->cb_cls,
+ NULL,
+ GNUNET_NO,
+ bandwidth_zero,
+ bandwidth_zero,
+ NULL);
+ GNUNET_free (alh);
+ }
+ if (NULL != ph->addr_info_cb)
+ {
+ /* Indicate reconnect */
+ ph->addr_info_cb (ph->addr_info_cb_cls,
+ NULL,
+ GNUNET_NO,
+ bandwidth_zero,
+ bandwidth_zero,
+ NULL);
+ }
+ ph->backoff = GNUNET_TIME_STD_BACKOFF (ph->backoff);
+ ph->task = GNUNET_SCHEDULER_add_delayed (ph->backoff,
+ &reconnect_task,
+ ph);
+}
+
+
+/**
+ * We received a peer information message. Validate and process it.
+ *
+ * @param cls our context with the callback
+ * @param pi the message
+ * @return #GNUNET_OK if the message was well-formed
+ */
+static int
+check_peer_information (void *cls,
+ const struct PeerInformationMessage *pi)
+{
+ const char *plugin_address;
+ const char *plugin_name;
+ uint16_t plugin_address_length;
+ uint16_t plugin_name_length;
+
+ plugin_address_length = ntohs (pi->address_length);
+ plugin_name_length = ntohs (pi->plugin_name_length);
+ plugin_address = (const char *) &pi[1];
+ plugin_name = &plugin_address[plugin_address_length];
+ if ( (plugin_address_length + plugin_name_length
+ + sizeof(struct PeerInformationMessage) != ntohs (pi->header.size)) ||
+ (plugin_name[plugin_name_length - 1] != '\0'))
+ {
+ GNUNET_break(0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * We received a peer information message. Validate and process it.
+ *
+ * @param cls our context with the callback
+ * @param pi the message
+ * @return #GNUNET_OK if the message was well-formed
+ */
+static void
+handle_peer_information (void *cls,
+ const struct PeerInformationMessage *pi)
+{
+ struct GNUNET_ATS_PerformanceHandle *ph = cls;
+ const char *plugin_address;
+ const char *plugin_name;
+ struct GNUNET_HELLO_Address address;
+ uint16_t plugin_address_length;
+ int addr_active;
+ struct GNUNET_ATS_Properties prop;
+
+ if (NULL == ph->addr_info_cb)
+ return;
+ plugin_address_length = ntohs (pi->address_length);
+ addr_active = (int) ntohl (pi->address_active);
+ plugin_address = (const char *) &pi[1];
+ plugin_name = &plugin_address[plugin_address_length];
+
+ GNUNET_ATS_properties_ntoh (&prop,
+ &pi->properties);
+ address.peer = pi->peer;
+ address.local_info = (enum GNUNET_HELLO_AddressInfo) ntohl (pi->address_local_info);
+ address.address = plugin_address;
+ address.address_length = plugin_address_length;
+ address.transport_name = plugin_name;
+ ph->addr_info_cb (ph->addr_info_cb_cls,
+ &address,
+ addr_active,
+ pi->bandwidth_out,
+ pi->bandwidth_in,
+ &prop);
+}
+
+
+/**
+ * We received a reservation result message. Validate and process it.
+ *
+ * @param cls our context with the callback
+ * @param rr the message
+ */
+static void
+handle_reservation_result (void *cls,
+ const struct ReservationResultMessage *rr)
+{
+ struct GNUNET_ATS_PerformanceHandle *ph = cls;
+ struct GNUNET_ATS_ReservationContext *rc;
+ int32_t amount;
+
+ amount = ntohl (rr->amount);
+ rc = ph->reservation_head;
+ if (0 != GNUNET_memcmp (&rr->peer,
+ &rc->peer))
+ {
+ GNUNET_break(0);
+ reconnect (ph);
+ return;
+ }
+ GNUNET_CONTAINER_DLL_remove (ph->reservation_head,
+ ph->reservation_tail,
+ rc);
+ if ( (0 == amount) ||
+ (NULL != rc->rcb) )
+ {
+ /* tell client if not cancelled */
+ if (NULL != rc->rcb)
+ rc->rcb (rc->rcb_cls,
+ &rr->peer,
+ amount,
+ GNUNET_TIME_relative_ntoh (rr->res_delay));
+ GNUNET_free (rc);
+ return;
+ }
+ /* amount non-zero, but client cancelled, consider undo! */
+ if (GNUNET_YES != rc->undo)
+ {
+ GNUNET_free (rc);
+ return; /* do not try to undo failed undos or negative amounts */
+ }
+ GNUNET_free (rc);
+ (void) GNUNET_ATS_reserve_bandwidth (ph,
+ &rr->peer,
+ -amount,
+ NULL, NULL);
+}
+
+
+/**
+ * We received a PeerInformationMessage. Validate it.
+ *
+ * @param cls our context with the callback
+ * @param pi the message
+ * @return #GNUNET_OK if the message was well-formed
+ */
+static int
+check_address_list (void *cls,
+ const struct PeerInformationMessage *pi)
+{
+ const char *plugin_address;
+ const char *plugin_name;
+ uint16_t plugin_address_length;
+ uint16_t plugin_name_length;
+
+ plugin_address_length = ntohs (pi->address_length);
+ plugin_name_length = ntohs (pi->plugin_name_length);
+ plugin_address = (const char *) &pi[1];
+ plugin_name = &plugin_address[plugin_address_length];
+ if ( (plugin_address_length + plugin_name_length
+ + sizeof (struct PeerInformationMessage) != ntohs (pi->header.size)) ||
+ (plugin_name[plugin_name_length - 1] != '\0') )
+ {
+ GNUNET_break(0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * We received a #GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE.
+ * Process it.
+ *
+ * @param cls our context with the callback
+ * @param pi the message
+ */
+static void
+handle_address_list (void *cls,
+ const struct PeerInformationMessage *pi)
+{
+ struct GNUNET_ATS_PerformanceHandle *ph = cls;
+ struct GNUNET_ATS_AddressListHandle *alh;
+ struct GNUNET_ATS_AddressListHandle *next;
+ const char *plugin_address;
+ const char *plugin_name;
+ struct GNUNET_HELLO_Address address;
+ struct GNUNET_PeerIdentity allzeros;
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_zero;
+ struct GNUNET_ATS_Properties prop;
+ uint16_t plugin_address_length;
+ uint16_t plugin_name_length;
+ uint32_t active;
+ uint32_t id;
+
+ id = ntohl (pi->id);
+ active = ntohl (pi->address_active);
+ plugin_address_length = ntohs (pi->address_length);
+ plugin_name_length = ntohs (pi->plugin_name_length);
+ plugin_address = (const char *) &pi[1];
+ plugin_name = &plugin_address[plugin_address_length];
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received ATS_ADDRESSLIST_RESPONSE message for peer %s and plugin %s\n",
+ GNUNET_i2s (&pi->peer),
+ plugin_name);
+
+ next = ph->addresslist_head;
+ while (NULL != (alh = next))
+ {
+ next = alh->next;
+ if (alh->id == id)
+ break;
+ }
+ if (NULL == alh)
+ return; /* was canceled */
+
+ memset (&allzeros, '\0', sizeof (allzeros));
+ if ( (0 == GNUNET_is_zero (&pi->peer)) &&
+ (0 == plugin_name_length) &&
+ (0 == plugin_address_length) )
+ {
+ /* Done */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received last message for ATS_ADDRESSLIST_RESPONSE\n");
+ bandwidth_zero.value__ = htonl (0);
+ GNUNET_CONTAINER_DLL_remove (ph->addresslist_head,
+ ph->addresslist_tail,
+ alh);
+ if (NULL != alh->cb)
+ alh->cb (alh->cb_cls,
+ NULL,
+ GNUNET_NO,
+ bandwidth_zero,
+ bandwidth_zero,
+ NULL);
+ GNUNET_free (alh);
+ return;
+ }
+
+ address.peer = pi->peer;
+ address.address = plugin_address;
+ address.address_length = plugin_address_length;
+ address.transport_name = plugin_name;
+ if ( ( (GNUNET_YES == alh->all_addresses) ||
+ (GNUNET_YES == active) ) &&
+ (NULL != alh->cb) )
+ {
+ GNUNET_ATS_properties_ntoh (&prop,
+ &pi->properties);
+ alh->cb (alh->cb_cls,
+ &address,
+ active,
+ pi->bandwidth_out,
+ pi->bandwidth_in,
+ &prop);
+ }
+}
+
+
+/**
+ * Generic error handler, called with the appropriate error code and
+ * the same closure specified at the creation of the message queue.
+ * Not every message queue implementation supports an error handler.
+ *
+ * @param cls closure with the `struct GNUNET_ATS_PerformanceHandle *`
+ * @param error error code
+ */
+static void
+mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
+{
+ struct GNUNET_ATS_PerformanceHandle *ph = cls;
+
+ do_reconnect (ph);
+}
+
+
+/**
+ * Re-establish the connection to the ATS service.
+ *
+ * @param ph handle to use to re-connect.
+ */
+static void
+reconnect (struct GNUNET_ATS_PerformanceHandle *ph)
+{
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_var_size (peer_information,
+ GNUNET_MESSAGE_TYPE_ATS_PEER_INFORMATION,
+ struct PeerInformationMessage,
+ ph),
+ GNUNET_MQ_hd_fixed_size (reservation_result,
+ GNUNET_MESSAGE_TYPE_ATS_RESERVATION_RESULT,
+ struct ReservationResultMessage,
+ ph),
+ GNUNET_MQ_hd_var_size (address_list,
+ GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE,
+ struct PeerInformationMessage,
+ ph),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_MQ_Envelope *env;
+ struct ClientStartMessage *init;
+
+ GNUNET_assert (NULL == ph->mq);
+ ph->mq = GNUNET_CLIENT_connect (ph->cfg,
+ "ats",
+ handlers,
+ &mq_error_handler,
+ ph);
+ if (NULL == ph->mq)
+ return;
+ env = GNUNET_MQ_msg (init,
+ GNUNET_MESSAGE_TYPE_ATS_START);
+ init->start_flag = htonl ( (NULL == ph->addr_info_cb)
+ ? START_FLAG_PERFORMANCE_NO_PIC
+ : START_FLAG_PERFORMANCE_WITH_PIC);
+ GNUNET_MQ_send (ph->mq,
+ env);
+}
+
/**
* Get handle to access performance API of the ATS subsystem.
*
* @param cfg configuration to use
- * @param infocb function to call on allocation changes, can be NULL
- * @param infocb_cls closure for infocb
+ * @param addr_info_cb callback called when performance characteristics for
+ * an address change
+ * @param addr_info_cb_cls closure for @a addr_info_cb
* @return ats performance context
*/
struct GNUNET_ATS_PerformanceHandle *
GNUNET_ATS_performance_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
- GNUNET_ATS_PeerInformationCallback infocb,
- void *infocb_cls)
+ GNUNET_ATS_AddressInformationCallback addr_info_cb,
+ void *addr_info_cb_cls)
{
- return NULL;
+ struct GNUNET_ATS_PerformanceHandle *ph;
+
+ ph = GNUNET_new (struct GNUNET_ATS_PerformanceHandle);
+ ph->cfg = cfg;
+ ph->addr_info_cb = addr_info_cb;
+ ph->addr_info_cb_cls = addr_info_cb_cls;
+ reconnect (ph);
+ if (NULL == ph->mq)
+ {
+ GNUNET_free (ph);
+ return NULL;
+ }
+ return ph;
}
* @param ph handle
*/
void
-GNUNET_ATS_performance_done (struct GNUNET_ATS_SchedulingHandle *ph)
+GNUNET_ATS_performance_done (struct GNUNET_ATS_PerformanceHandle *ph)
{
-}
-
+ struct GNUNET_ATS_ReservationContext *rc;
+ struct GNUNET_ATS_AddressListHandle *alh;
-/**
- * Context that can be used to cancel a peer information request.
- */
-struct GNUNET_ATS_ReservationContext
-{
-};
+ while (NULL != (alh = ph->addresslist_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (ph->addresslist_head,
+ ph->addresslist_tail,
+ alh);
+ GNUNET_free (alh);
+ }
+ while (NULL != (rc = ph->reservation_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (ph->reservation_head,
+ ph->reservation_tail,
+ rc);
+ GNUNET_break (NULL == rc->rcb);
+ GNUNET_free (rc);
+ }
+ if (NULL != ph->task)
+ {
+ GNUNET_SCHEDULER_cancel (ph->task);
+ ph->task = NULL;
+ }
+ if (NULL != ph->mq)
+ {
+ GNUNET_MQ_destroy (ph->mq);
+ ph->mq = NULL;
+ }
+ GNUNET_free (ph);
+}
/**
* Reserve inbound bandwidth from the given peer. ATS will look at
* the current amount of traffic we receive from the peer and ensure
- * that the peer could add 'amount' of data to its stream.
+ * that the peer could add @a amount of data to its stream.
*
* @param ph performance handle
* @param peer identifies the peer
* @param amount reserve N bytes for receiving, negative
* amounts can be used to undo a (recent) reservation;
- * @param info function to call with the resulting reservation information
- * @param info_cls closure for info
+ * @param rcb function to call with the resulting reservation information
+ * @param rcb_cls closure for @a rcb
* @return NULL on error
* @deprecated will be replaced soon
*/
struct GNUNET_ATS_ReservationContext *
GNUNET_ATS_reserve_bandwidth (struct GNUNET_ATS_PerformanceHandle *ph,
- const struct GNUNET_PeerIdentity *peer,
- int32_t amount,
- GNUNET_ATS_ReservationCallback info,
- void *info_cls)
+ const struct GNUNET_PeerIdentity *peer,
+ int32_t amount,
+ GNUNET_ATS_ReservationCallback rcb,
+ void *rcb_cls)
{
- return NULL;
+ struct GNUNET_ATS_ReservationContext *rc;
+ struct GNUNET_MQ_Envelope *env;
+ struct ReservationRequestMessage *m;
+
+ if (NULL == ph->mq)
+ return NULL;
+ rc = GNUNET_new (struct GNUNET_ATS_ReservationContext);
+ rc->size = amount;
+ rc->peer = *peer;
+ rc->rcb = rcb;
+ rc->rcb_cls = rcb_cls;
+ if ( (NULL != rcb) &&
+ (amount > 0) )
+ rc->undo = GNUNET_YES;
+ GNUNET_CONTAINER_DLL_insert_tail (ph->reservation_head,
+ ph->reservation_tail,
+ rc);
+ env = GNUNET_MQ_msg (m,
+ GNUNET_MESSAGE_TYPE_ATS_RESERVATION_REQUEST);
+ m->amount = htonl (amount);
+ m->peer = *peer;
+ GNUNET_MQ_send (ph->mq,
+ env);
+ return rc;
}
/**
* Cancel request for reserving bandwidth.
*
- * @param rc context returned by the original GNUNET_ATS_reserve_bandwidth call
+ * @param rc context returned by the original #GNUNET_ATS_reserve_bandwidth() call
+ */
+void
+GNUNET_ATS_reserve_bandwidth_cancel (struct GNUNET_ATS_ReservationContext *rc)
+{
+ rc->rcb = NULL;
+}
+
+
+/**
+ * Get information about addresses known to the ATS subsystem.
+ *
+ * @param ph the performance handle to use
+ * @param peer peer idm can be NULL for all peers
+ * @param all #GNUNET_YES to get information about all addresses or #GNUNET_NO to
+ * get only address currently used
+ * @param infocb callback to call with the addresses,
+ * will callback with address == NULL when done
+ * @param infocb_cls closure for @a infocb
+ * @return ats performance context
+ */
+struct GNUNET_ATS_AddressListHandle*
+GNUNET_ATS_performance_list_addresses (struct GNUNET_ATS_PerformanceHandle *ph,
+ const struct GNUNET_PeerIdentity *peer,
+ int all,
+ GNUNET_ATS_AddressInformationCallback infocb,
+ void *infocb_cls)
+{
+ struct GNUNET_ATS_AddressListHandle *alh;
+ struct GNUNET_MQ_Envelope *env;
+ struct AddressListRequestMessage *m;
+
+ if (NULL == ph->mq)
+ return NULL;
+ if (NULL == infocb)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ alh = GNUNET_new (struct GNUNET_ATS_AddressListHandle);
+ alh->id = ph->id++;
+ alh->cb = infocb;
+ alh->cb_cls = infocb_cls;
+ alh->ph = ph;
+ alh->all_addresses = all;
+ if (NULL == peer)
+ {
+ alh->all_peers = GNUNET_YES;
+ }
+ else
+ {
+ alh->all_peers = GNUNET_NO;
+ alh->peer = *peer;
+ }
+ GNUNET_CONTAINER_DLL_insert (ph->addresslist_head,
+ ph->addresslist_tail,
+ alh);
+ env = GNUNET_MQ_msg (m,
+ GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_REQUEST);
+ m->all = htonl (all);
+ m->id = htonl (alh->id);
+ if (NULL != peer)
+ m->peer = *peer;
+ GNUNET_MQ_send (ph->mq,
+ env);
+ return alh;
+}
+
+
+/**
+ * Cancel a pending address listing operation
+ *
+ * @param alh the handle of the request to cancel
*/
void
-GNUNET_ATS_reserve_bandwidth_cancel (struct
- GNUNET_ATS_ReservationContext *rc)
+GNUNET_ATS_performance_list_addresses_cancel (struct GNUNET_ATS_AddressListHandle *alh)
{
+ struct GNUNET_ATS_PerformanceHandle *ph = alh->ph;
+
+ GNUNET_CONTAINER_DLL_remove (ph->addresslist_head,
+ ph->addresslist_tail,
+ alh);
+ GNUNET_free (alh);
+}
+
+
+/**
+ * Convert a `enum GNUNET_ATS_PreferenceType` to a string
+ *
+ * @param type the preference type
+ * @return a string or NULL if invalid
+ */
+const char *
+GNUNET_ATS_print_preference_type (enum GNUNET_ATS_PreferenceKind type)
+{
+ const char *prefs[] = GNUNET_ATS_PreferenceTypeString;
+
+ if (type < GNUNET_ATS_PREFERENCE_END)
+ return prefs[type];
+ return NULL;
}
/**
* Change preferences for the given peer. Preference changes are forgotten if peers
* disconnect.
- *
+ *
* @param ph performance handle
* @param peer identifies the peer
- * @param ... 0-terminated specification of the desired changes
+ * @param ... #GNUNET_ATS_PREFERENCE_END-terminated specification of the desired changes
*/
void
-GNUNET_ATS_change_preference (struct GNUNET_ATS_PerformanceHandle *ph,
- const struct GNUNET_PeerIdentity *peer,
- ...)
+GNUNET_ATS_performance_change_preference (struct GNUNET_ATS_PerformanceHandle *ph,
+ const struct GNUNET_PeerIdentity *peer,
+ ...)
{
+ struct GNUNET_MQ_Envelope *env;
+ struct ChangePreferenceMessage *m;
+ uint32_t count;
+ struct PreferenceInformation *pi;
+ va_list ap;
+ enum GNUNET_ATS_PreferenceKind kind;
+
+ if (NULL == ph->mq)
+ return;
+ count = 0;
+ va_start(ap, peer);
+ while (GNUNET_ATS_PREFERENCE_END !=
+ (kind = GNUNET_VA_ARG_ENUM (ap, GNUNET_ATS_PreferenceKind) ))
+ {
+ switch (kind)
+ {
+ case GNUNET_ATS_PREFERENCE_BANDWIDTH:
+ count++;
+ (void) va_arg (ap, double);
+ break;
+ case GNUNET_ATS_PREFERENCE_LATENCY:
+ count++;
+ (void) va_arg (ap, double);
+ break;
+ default:
+ GNUNET_assert(0);
+ }
+ }
+ va_end(ap);
+ env = GNUNET_MQ_msg_extra (m,
+ count * sizeof(struct PreferenceInformation),
+ GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_CHANGE);
+ m->num_preferences = htonl (count);
+ m->peer = *peer;
+ pi = (struct PreferenceInformation *) &m[1];
+ count = 0;
+ va_start(ap, peer);
+ while (GNUNET_ATS_PREFERENCE_END != (kind =
+ GNUNET_VA_ARG_ENUM (ap, GNUNET_ATS_PreferenceKind) ))
+ {
+ pi[count].preference_kind = htonl (kind);
+ switch (kind)
+ {
+ case GNUNET_ATS_PREFERENCE_BANDWIDTH:
+ pi[count].preference_value = (float) va_arg (ap, double);
+
+ count++;
+ break;
+ case GNUNET_ATS_PREFERENCE_LATENCY:
+ pi[count].preference_value = (float) va_arg (ap, double);
+
+ count++;
+ break;
+ default:
+ GNUNET_assert(0);
+ }
+ }
+ va_end(ap);
+ GNUNET_MQ_send (ph->mq,
+ env);
}
-/* end of ats_api_performance.c */
+/**
+ * Send feedback to ATS on how good a the requirements for a peer and a
+ * preference is satisfied by ATS
+ *
+ * @param ph performance handle
+ * @param scope the time interval this valid for: [now - scope .. now]
+ * @param peer identifies the peer
+ * @param ... #GNUNET_ATS_PREFERENCE_END-terminated specification of the desired changes
+ */
+void
+GNUNET_ATS_performance_give_feedback (struct GNUNET_ATS_PerformanceHandle *ph,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_TIME_Relative scope,
+ ...)
+{
+ struct GNUNET_MQ_Envelope *env;
+ struct FeedbackPreferenceMessage *m;
+ uint32_t count;
+ struct PreferenceInformation *pi;
+ va_list ap;
+ enum GNUNET_ATS_PreferenceKind kind;
+
+ if (NULL == ph->mq)
+ return;
+ count = 0;
+ va_start(ap, scope);
+ while (GNUNET_ATS_PREFERENCE_END !=
+ (kind = GNUNET_VA_ARG_ENUM (ap, GNUNET_ATS_PreferenceKind) ))
+ {
+ switch (kind)
+ {
+ case GNUNET_ATS_PREFERENCE_BANDWIDTH:
+ count++;
+ (void) va_arg (ap, double);
+ break;
+ case GNUNET_ATS_PREFERENCE_LATENCY:
+ count++;
+ (void) va_arg (ap, double);
+ break;
+ default:
+ GNUNET_assert(0);
+ }
+ }
+ va_end(ap);
+ env = GNUNET_MQ_msg_extra (m,
+ count * sizeof(struct PreferenceInformation),
+ GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_FEEDBACK);
+ m->scope = GNUNET_TIME_relative_hton (scope);
+ m->num_feedback = htonl (count);
+ m->peer = *peer;
+ pi = (struct PreferenceInformation *) &m[1];
+ count = 0;
+ va_start(ap, scope);
+ while (GNUNET_ATS_PREFERENCE_END != (kind =
+ GNUNET_VA_ARG_ENUM (ap, GNUNET_ATS_PreferenceKind) ))
+ {
+ pi[count].preference_kind = htonl (kind);
+ switch (kind)
+ {
+ case GNUNET_ATS_PREFERENCE_BANDWIDTH:
+ pi[count].preference_value = (float) va_arg (ap, double);
+
+ count++;
+ break;
+ case GNUNET_ATS_PREFERENCE_LATENCY:
+ pi[count].preference_value = (float) va_arg (ap, double);
+
+ count++;
+ break;
+ default:
+ GNUNET_assert(0);
+ }
+ }
+ va_end(ap);
+ GNUNET_MQ_send (ph->mq,
+ env);
+}
+
+/* end of ats_api_performance.c */
projects / oweals / gnunet.git / blobdiff