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3 (C) 2011 Christian Grothoff (and other contributing authors)
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22 * @file ats/gnunet-service-ats_addresses.c
23 * @brief ats service address management
24 * @author Matthias Wachs
25 * @author Christian Grothoff
28 #include "gnunet_ats_service.h"
29 #include "gnunet_ats_plugin.h"
30 #include "gnunet-service-ats.h"
31 #include "gnunet-service-ats_addresses.h"
32 #include "gnunet-service-ats_normalization.h"
33 #include "gnunet-service-ats_performance.h"
34 #include "gnunet-service-ats_scheduling.h"
35 #include "gnunet-service-ats_reservations.h"
39 * NOTE: Do not change this documentation. This documentation is based on
40 * gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
41 * use build_txt.sh to generate plaintext output
43 * 1 ATS addresses : ATS address management
45 * This ATS addresses ("addresses") component manages the addresses known to
46 * ATS service and suggests addresses to transport service when it is
47 * interested in address suggestion for a peer. ATS addresses also
48 * instantiates the bandwidth assignment mechanism (solver), notifies it
49 * about changes to addresses and forwards changes to bandwidth assignments
50 * to transport, depending if transport is interested in this change.
56 * Addresses are added by specifying peer ID, plugin, address, address length
57 * and session, if available. ATS information can be specified if available.
61 * ATS specifies a fix set of networks an address can belong to. For each
62 * network an inbound and outbound quota will be specified. The available
63 * networks and addtional helper varaibles are defined in
64 * gnunet_ats_service.h. At the moment 5 networks are defined:
65 * * GNUNET_ATS_NET_UNSPECIFIED
66 * * GNUNET_ATS_NET_LOOPBACK
67 * * GNUNET_ATS_NET_LAN
68 * * GNUNET_ATS_NET_WAN
69 * * GNUNET_ATS_NET_WLAN
71 * The total number of networks defined is stored in
72 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
73 * initializer for an int array, while GNUNET_ATS_NetworkType is an
74 * initializer for a char array containing a string description of all
79 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
80 * is loaded from ats configuration during initialization. This quota defines
81 * to total amount of inbound and outbound traffic allowed for a specific
82 * network. The configuration values used are in section ats:
83 * * "NETWORK"_QUOTA_IN = <value>
84 * * "NETWORK"_QUOTA_IN = <value>
86 * You can specify quotas by setting the <value> to a:
87 * * unrestricted: unlimited
88 * * number of bytes: e.g. 10240
89 * * fancy value: e.g. 64 Kib
91 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
92 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
94 * * GNUNET_ATS_DefaultBandwidth: 65536
95 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
96 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
98 * Details of loading quotas and default values will be described on
100 * 1.1.4 Preference values
102 * 1.2 Data structures used
104 * Addresse uses struct ATS_Address for each address. The structs are stored
105 * in a linked list and provides a pointer void *solver_information for the
106 * solver to store address specific information. It provides the int values
107 * active which is set to GNUNET_YES if the address is select for transport
108 * use and used, representing that transport service is actively using this
109 * address. Address information are stored in peer, addr, addr_len, plugin.
113 * During initialization a hashmap to store addresses is created. The quotas
114 * for all networks defined for ATS are loaded from configuration. For each
115 * network first the logic will check if the string
116 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
117 * the configured value as a fancy size and if this fails it will try to use
118 * it as a value_number. If no configuration value is found it will assign
119 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
120 * configured solver using configuration "[ats]:MODE". Current solvers are
121 * MODE_PROPORTIONAL, MODE_MLP. Interaction is done using a solver API
126 * * s_init: init the solver with required information
127 * * s_add: add a new address
128 * * s_update: update ATS values or session for an address
129 * * s_get: get prefered address for a peer
130 * * s_del: delete an address
131 * * s_pref: change preference value for a peer
132 * * s_done: shutdown solver
134 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
135 * solver which is called when bandwidth assigned to peer has changed
139 * During shutdown all addresses are freed and the solver told to shutdown
141 * 1.6 Addresses and sessions
143 * Addresses consist of the address itself and a numerical session. When a
144 * new address without a session is added it has no session, so it gets
145 * session 0 assigned. When an address with a session is added and an address
146 * object with session 0 is found, this object is updated with the session
147 * otherwise a new address object with this session assigned is created.
151 * Addresses a1,a2 with session s1, s2 are "exact" if:
152 * (a1 == a2)&&(s1 == s2)
153 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
154 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
156 * 1.7 Address management
158 * Transport service notifies ATS about changes to the addresses known to
161 * 1.7.1 Adding an address
163 * When transport learns a new address it tells ATS and ATS is telling
164 * addresses about it using GAS_address_add. If not known to addresses it
165 * creates a new address object and calls solver's s_add. ATS information are
166 * deserialized and solver is notified about the session and ATS information
169 * 1.7.2 Updating an address
171 * Addresses does an lookup up for the existing address with the given
172 * session. If disassembles included ATS information and notifies the solver
173 * using s_update about the update.
175 * 1.7.3 Deleting an address
177 * Addresses does an lookup for the exact address and session and if removes
178 * this address. If session != 0 the session is set to 0 and the address is
179 * kept. If session == 0, the addresses is removed.
181 * 1.7.4 Requesting an address suggestion
183 * The address client issues a request address message to be notified about
184 * address suggestions for a specific peer. Addresses asks the solver with
185 * s_get. If no address is available, it will not send a response, otherwise
186 * it will respond with the choosen address.
188 * 1.7.5 Address suggestions
190 * Addresses will notify the client automatically on any bandwidth_changed_cb
191 * by the solver if a address suggestion request is pending. If no address is
192 * available it will not respond at all If the client is not interested
193 * anymore, it has to cancel the address suggestion request.
195 * 1.7.6 Suggestions blocks and reset
197 * After suggesting an address it is blocked for ATS_BLOCKING_DELTA sec. to
198 * prevent the client from being thrashed. If the client requires immediately
199 * it can reset this block using GAS_addresses_handle_backoff_reset.
201 * 1.7.7 Marking address in use
203 * The client can notify addresses that it successfully uses an address and
204 * wants this address to be kept by calling GSA_address_in_use. Adresses will
205 * mark the address as used an notify the solver about the use.
207 * 1.7.8 Address lifecycle
210 * * (updated address) || (address in use)
213 * 1.8 Bandwidth assignment
215 * The addresses are used to perform resource allocation operations. ATS
216 * addresses takes care of instantiating the solver configured and notifies
217 * the respective solver about address changes and receives changes to the
218 * bandwidth assignment from the solver. The current bandwidth assignment is
219 * sent to transport. The specific solvers will be described in the specific
222 * 1.9 Changing peer preferences
224 * The bandwidth assigned to a peer can be influenced by setting a preference
225 * for a peer. The prefernce will be given to to the solver with s_pref which
226 * has to take care of the preference value
232 * Pending Address suggestion requests
234 struct GAS_Addresses_Suggestion_Requests
239 struct GAS_Addresses_Suggestion_Requests *next;
244 struct GAS_Addresses_Suggestion_Requests *prev;
249 struct GNUNET_PeerIdentity id;
253 * Pending Address suggestion requests
255 struct GAS_Addresses_Preference_Clients
260 struct GAS_Addresses_Preference_Clients *next;
265 struct GAS_Addresses_Preference_Clients *prev;
274 * Handle for ATS address component
276 struct GAS_Addresses_Handle
281 struct GNUNET_STATISTICS_Handle *stat;
284 * A multihashmap to store all addresses
286 struct GNUNET_CONTAINER_MultiPeerMap *addresses;
289 * Is ATS addresses running
294 * Preferences clients
299 * Configured ATS solver
309 * Address suggestion requests DLL head
311 struct GAS_Addresses_Suggestion_Requests *pending_requests_head;
314 * Address suggestion requests DLL tail
316 struct GAS_Addresses_Suggestion_Requests *pending_requests_tail;
319 * Address suggestion requests DLL head
321 struct GAS_Addresses_Preference_Clients *preference_clients_head;
324 * Address suggestion requests DLL head
326 struct GAS_Addresses_Preference_Clients *preference_clients_tail;
331 struct GNUNET_ATS_PluginEnvironment env;
334 * Solver plugin name as string
340 * Disassemble ATS information and update performance information in address
342 * Updates existing information and adds new information
344 * @param dest destination address
345 * @param update source ATS information
346 * @param update_count number of ATS information
347 * @param delta_dest ats performance information which were updated
348 * including previous value
349 * @param delta_count number of ATS information in the delta
350 * @return GNUNET_YES if address was address updated, GNUNET_NO otherwise
353 disassemble_ats_information (struct ATS_Address *dest,
354 const struct GNUNET_ATS_Information *update, uint32_t update_count,
355 struct GNUNET_ATS_Information **delta_dest, uint32_t *delta_count)
363 struct GNUNET_ATS_Information add_atsi[update_count];
364 struct GNUNET_ATS_Information delta_atsi[update_count];
365 struct GNUNET_ATS_Information *tmp_atsi;
366 uint32_t add_atsi_count;
367 uint32_t delta_atsi_count;
371 delta_atsi_count = 0;
373 if (0 == update_count)
376 if (NULL == dest->atsi)
378 /* Create performance information */
380 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
381 dest->atsi_count = update_count;
382 memcpy (dest->atsi, update,
383 update_count * sizeof(struct GNUNET_ATS_Information));
385 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
386 for (c1 = 0; c1 < update_count; c1++)
388 (*delta_dest)[c1].type = update[c1].type;
389 (*delta_dest)[c1].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
391 (*delta_count) = update_count;
395 for (c1 = 0; c1 < update_count; c1++)
397 /* Update existing performance information */
399 for (c2 = 0; c2 < dest->atsi_count; c2++)
401 if (update[c1].type == dest->atsi[c2].type)
403 if (update[c1].value != dest->atsi[c2].value)
405 /* Save previous value in delta */
406 delta_atsi[delta_atsi_count] = dest->atsi[c2];
409 dest->atsi[c2].value = update[c1].value;
416 if (GNUNET_NO == found)
418 add_atsi[add_atsi_count] = update[c1];
420 delta_atsi[delta_atsi_count].type = update[c1].type;
421 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
426 if (add_atsi_count > 0)
428 /* Extend ats performance information */
430 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
431 (sizeof (struct GNUNET_ATS_Information)));
432 memcpy (tmp_atsi, dest->atsi,
433 dest->atsi_count * sizeof(struct GNUNET_ATS_Information));
434 memcpy (&tmp_atsi[dest->atsi_count], add_atsi,
435 add_atsi_count * sizeof(struct GNUNET_ATS_Information));
436 GNUNET_free(dest->atsi);
437 dest->atsi = tmp_atsi;
438 dest->atsi_count = dest->atsi_count + add_atsi_count;
442 if (delta_atsi_count > 0)
446 GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
447 memcpy ((*delta_dest), delta_atsi,
448 delta_atsi_count * sizeof(struct GNUNET_ATS_Information));
449 (*delta_count) = delta_atsi_count;
456 * Free the given address
458 * @param addr address to destroy
461 free_address (struct ATS_Address *addr)
463 GNUNET_free(addr->plugin);
464 GNUNET_free_non_null(addr->atsi);
469 * Create a ATS_address with the given information
472 * @param plugin_name plugin
473 * @param plugin_addr address
474 * @param plugin_addr_len address length
475 * @param local_address_info additional local info for the address
476 * @param session_id session
477 * @return the ATS_Address
479 static struct ATS_Address *
480 create_address (const struct GNUNET_PeerIdentity *peer,
481 const char *plugin_name,
482 const void *plugin_addr,
483 size_t plugin_addr_len,
484 uint32_t local_address_info,
487 struct ATS_Address *aa = NULL;
491 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
493 aa->addr_len = plugin_addr_len;
495 memcpy (&aa[1], plugin_addr, plugin_addr_len);
496 aa->plugin = GNUNET_strdup (plugin_name);
497 aa->session_id = session_id;
498 aa->local_address_info = local_address_info;
499 aa->active = GNUNET_NO;
500 aa->used = GNUNET_NO;
501 aa->solver_information = NULL;
504 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init (0);
505 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init (0);
507 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1++)
509 aa->atsin[c1].avg_queue_index = 0;
510 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
511 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
517 struct CompareAddressContext
519 const struct ATS_Address *search;
521 /* exact_address != NULL if address and session is equal */
522 struct ATS_Address *exact_address;
523 /* exact_address != NULL if address and session is 0 */
524 struct ATS_Address *base_address;
531 * @param cls a CompareAddressContext containin the source address
533 * @param value the address to compare with
534 * @return #GNUNET_YES to continue, #GNUNET_NO if address is founce
537 compare_address_it (void *cls,
538 const struct GNUNET_PeerIdentity *key,
541 struct CompareAddressContext *cac = cls;
542 struct ATS_Address *aa = value;
544 /* Find an matching exact address:
547 * aa->addr_len == cac->search->addr_len
548 * aa->plugin == cac->search->plugin
549 * aa->addr == cac->search->addr
550 * aa->session == cac->search->session
552 * return as exact address
554 if ((aa->addr_len == cac->search->addr_len)
555 && (0 == strcmp (aa->plugin, cac->search->plugin)))
557 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len))
558 && (aa->session_id == cac->search->session_id))
559 cac->exact_address = aa;
562 /* Find an matching base address:
566 * aa->session_id == 0
569 * aa->addr_len == cac->search->addr_len
570 * aa->plugin == cac->search->plugin
571 * aa->addr == cac->search->addr
573 * return as base address
575 if ((aa->addr_len == cac->search->addr_len)
576 && (0 == strcmp (aa->plugin, cac->search->plugin)))
578 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len))
579 && (aa->session_id == 0))
580 cac->base_address = aa;
583 /* Find an matching exact address based on session:
587 * cac->search->addr_len == 0
590 * aa->plugin == cac->search->plugin
591 * aa->session_id == cac->search->session_id
593 * return as exact address
595 if (0 == cac->search->addr_len)
597 if ((0 == strcmp (aa->plugin, cac->search->plugin))
598 && (aa->session_id == cac->search->session_id))
599 cac->exact_address = aa;
602 if (cac->exact_address == NULL )
603 return GNUNET_YES; /* Continue iteration to find exact address */
605 return GNUNET_NO; /* Stop iteration since we have an exact address */
609 * Find an existing equivalent address record.
610 * Compares by peer identity and network address OR by session ID
611 * (one of the two must match).
613 * @param handle the address handle
614 * @param peer peer to lookup addresses for
615 * @param addr existing address record
616 * @return existing address record, NULL for none
619 find_equivalent_address (struct GAS_Addresses_Handle *handle,
620 const struct GNUNET_PeerIdentity *peer, const struct ATS_Address *addr)
622 struct CompareAddressContext cac;
624 cac.exact_address = NULL;
625 cac.base_address = NULL;
627 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
629 &compare_address_it, &cac);
631 if (cac.exact_address == NULL)
632 return cac.base_address;
633 return cac.exact_address;
638 * Find the exact address
640 * @param handle the address handle to use
642 * @param plugin_name transport plugin name
643 * @param plugin_addr plugin address
644 * @param plugin_addr_len length of the plugin address
645 * @param local_address_info the local address for the address
646 * @param session_id session id, can be 0
647 * @return an ATS_address or NULL
650 static struct ATS_Address *
651 find_exact_address (struct GAS_Addresses_Handle *handle,
652 const struct GNUNET_PeerIdentity *peer,
653 const char *plugin_name,
654 const void *plugin_addr,
655 size_t plugin_addr_len,
656 uint32_t local_address_info,
659 struct ATS_Address *aa;
660 struct ATS_Address *ea;
662 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
663 local_address_info, session_id);
665 /* Get existing address or address with session == 0 */
666 ea = find_equivalent_address (handle, peer, aa);
670 else if (ea->session_id != session_id)
676 * Function allowing the solver to obtain normalized preference
680 * @param id the peer to return the normalized properties for
681 * @return array of double values with |GNUNET_ATS_PreferenceCount| elements
684 get_preferences_cb (void *cls, const struct GNUNET_PeerIdentity *id)
686 return GAS_normalization_get_preferences_by_peer (id);
690 * Function allowing the solver to obtain normalized property
691 * values for an address from solver
694 * @param address the address
695 * @return array of double values with |GNUNET_ATS_QualityPropertiesCount| elements
698 get_property_cb (void *cls, const struct ATS_Address *address)
700 return GAS_normalization_get_properties ((struct ATS_Address *) address);
704 * Extract an ATS performance info from an address
706 * @param address the address
707 * @param type the type to extract in HBO
708 * @return the value in HBO or GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
711 get_performance_info (struct ATS_Address *address, uint32_t type)
714 GNUNET_assert(NULL != address);
716 if ((NULL == address->atsi) || (0 == address->atsi_count))
717 return GNUNET_ATS_VALUE_UNDEFINED;
719 for (c1 = 0; c1 < address->atsi_count; c1++)
721 if (ntohl (address->atsi[c1].type) == type)
722 return ntohl (address->atsi[c1].value);
724 return GNUNET_ATS_VALUE_UNDEFINED;
728 * Add a new address for a peer.
730 * @param handle the address handle to use
732 * @param plugin_name transport plugin name
733 * @param plugin_addr plugin address
734 * @param plugin_addr_len length of the plugin address
735 * @param local_address_info the local address for the address
736 * @param session_id session id, can be 0
737 * @param atsi performance information for this address
738 * @param atsi_count number of performance information contained
741 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
742 const struct GNUNET_PeerIdentity *peer,
743 const char *plugin_name,
744 const void *plugin_addr,
745 size_t plugin_addr_len,
746 uint32_t local_address_info,
748 const struct GNUNET_ATS_Information *atsi,
751 struct ATS_Address *new_address;
752 struct ATS_Address *existing_address;
753 struct GNUNET_ATS_Information *atsi_delta;
754 uint32_t atsi_delta_count;
756 uint32_t previous_session;
759 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
760 "ADDRESS ADD", GNUNET_i2s (peer));
762 if (GNUNET_NO == handle->running)
765 GNUNET_assert(NULL != handle->addresses);
767 new_address = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
768 local_address_info, session_id);
770 disassemble_ats_information (new_address, atsi, atsi_count, &atsi_delta,
772 GNUNET_free_non_null(atsi_delta);
773 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
774 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
775 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
777 /* Get existing address or address with session == 0 */
778 existing_address = find_equivalent_address (handle, peer, new_address);
779 if (existing_address == NULL )
781 /* Add a new address */
782 new_address->t_added = GNUNET_TIME_absolute_get();
783 new_address->t_last_activity = GNUNET_TIME_absolute_get();
785 GNUNET_OK == GNUNET_CONTAINER_multipeermap_put (handle->addresses,
788 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
790 GNUNET_STATISTICS_set (handle->stat, "# addresses",
791 GNUNET_CONTAINER_multipeermap_size (handle->addresses), GNUNET_NO);
793 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
794 "Adding new address %p for peer `%s', length %u, session id %u, %s\n",
797 plugin_addr_len, session_id,
798 GNUNET_ATS_print_network_type (addr_net));
800 /* Tell solver about new address */
801 handle->env.sf.s_add (handle->solver, new_address, addr_net);
803 handle->env.sf.s_bulk_start (handle->solver);
804 GAS_normalization_normalize_property (handle->addresses, new_address, atsi,
806 handle->env.sf.s_bulk_stop (handle->solver);
808 /* Notify performance clients about new address */
809 GAS_performance_notify_all_clients (&new_address->peer, new_address->plugin,
810 new_address->addr, new_address->addr_len, new_address->session_id,
811 new_address->atsi, new_address->atsi_count,
812 new_address->assigned_bw_out, new_address->assigned_bw_in);
816 /* We have an existing address we can use, clean up new */
817 GNUNET_free(new_address->plugin);
818 GNUNET_free_non_null(new_address->atsi);
819 GNUNET_free(new_address);
822 if (0 != existing_address->session_id)
824 /* Should not happen */
829 addr_net = get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE);
830 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
831 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
833 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
834 "Found existing address for peer `%s' %p with new session %u in network %s\n",
835 GNUNET_i2s (peer), existing_address, session_id,
836 GNUNET_ATS_print_network_type (addr_net));
837 /* We have an address without an session, update this address */
838 existing_address->t_added = GNUNET_TIME_absolute_get();
839 existing_address->t_last_activity = GNUNET_TIME_absolute_get();
841 atsi_delta_count = 0;
843 == disassemble_ats_information (existing_address, atsi, atsi_count,
844 &atsi_delta, &atsi_delta_count))
846 /* Notify performance clients about properties */
847 GAS_performance_notify_all_clients (&existing_address->peer,
848 existing_address->plugin, existing_address->addr,
849 existing_address->addr_len, existing_address->session_id,
850 existing_address->atsi, existing_address->atsi_count,
851 existing_address->assigned_bw_out, existing_address->assigned_bw_in);
853 for (c1 = 0; c1 < atsi_delta_count; c1++)
855 if ((GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
856 && (addr_net != ntohl (atsi_delta[c1].value)))
858 /* Network type changed */
859 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
860 "Address for peer `%s' %p changed from network %s to %s\n",
861 GNUNET_i2s (peer), existing_address,
862 GNUNET_ATS_print_network_type (addr_net),
863 GNUNET_ATS_print_network_type (ntohl (atsi_delta[c1].value)));
864 handle->env.sf.s_address_update_network (handle->solver, existing_address,
865 ntohl (atsi_delta[c1].value),
866 get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE));
867 addr_net = get_performance_info (existing_address,
868 GNUNET_ATS_NETWORK_TYPE);
871 /* Notify solver about update with atsi information and session */
872 handle->env.sf.s_bulk_start (handle->solver);
873 GAS_normalization_normalize_property (handle->addresses, existing_address,
875 handle->env.sf.s_bulk_stop (handle->solver);
877 GNUNET_free_non_null(atsi_delta);
879 /* Notify solver about new session */
880 if (existing_address->session_id == session_id)
881 return; /* possible, can both be 0 since address is revalidated */
883 previous_session = existing_address->session_id;
884 existing_address->session_id = session_id;
885 handle->env.sf.s_address_update_session (handle->solver, existing_address,
886 previous_session, session_id);
888 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
889 "Updated existing address for peer `%s' %p length %u with new session %u in network %s\n",
890 GNUNET_i2s (peer), existing_address, existing_address->addr_len,
891 session_id, GNUNET_ATS_print_network_type (addr_net));
895 * Update an address with a session or performance information for a peer.
897 * If an address was added without a session it will be updated with the
900 * @param handle the address handle to use
902 * @param plugin_name transport plugin name
903 * @param plugin_addr plugin address
904 * @param plugin_addr_len length of the plugin address
905 * @param local_address_info the local address for the address
906 * @param session_id session id, can be 0
907 * @param atsi performance information for this address
908 * @param atsi_count number of performance information contained
911 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
912 const struct GNUNET_PeerIdentity *peer,
913 const char *plugin_name,
914 const void *plugin_addr,
915 size_t plugin_addr_len,
916 uint32_t local_address_info,
918 const struct GNUNET_ATS_Information *atsi,
921 struct ATS_Address *aa;
922 struct GNUNET_ATS_Information *atsi_delta;
923 uint32_t atsi_delta_count;
924 uint32_t prev_session;
927 if (GNUNET_NO == handle->running)
930 GNUNET_assert(NULL != handle->addresses);
932 /* Get existing address */
933 aa = find_exact_address (handle, peer, plugin_name, plugin_addr,
934 plugin_addr_len, local_address_info, session_id);
937 if (NULL == aa->solver_information)
940 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s' address \n",
941 "ADDRESS UPDATE", GNUNET_i2s (peer), aa);
944 aa->t_last_activity = GNUNET_TIME_absolute_get();
945 if (session_id != aa->session_id)
947 /* Session changed */
948 prev_session = aa->session_id;
949 aa->session_id = session_id;
950 handle->env.sf.s_address_update_session (handle->solver, aa, prev_session,
955 atsi_delta_count = 0;
957 == disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta,
960 /* ATS properties changed */
961 for (c1 = 0; c1 < atsi_delta_count; c1++)
963 if (GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
965 /* Network type changed */
966 handle->env.sf.s_address_update_network (handle->solver, aa,
967 ntohl (atsi_delta[c1].value),
968 get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE));
972 /* Notify performance clients about updated address */
973 GAS_performance_notify_all_clients (&aa->peer, aa->plugin, aa->addr,
974 aa->addr_len, aa->session_id, aa->atsi, aa->atsi_count,
975 aa->assigned_bw_out, aa->assigned_bw_in);
977 handle->env.sf.s_bulk_start (handle->solver);
978 GAS_normalization_normalize_property (handle->addresses, aa, atsi,
980 handle->env.sf.s_bulk_stop (handle->solver);
982 GNUNET_free_non_null(atsi_delta);
985 struct DestroyContext
987 struct ATS_Address *aa;
989 struct GAS_Addresses_Handle *handle;
992 * GNUNET_NO : full address
993 * GNUNET_YES : just session
1001 * If session != 0, just the session is deleted, the address itself still exists
1002 * If session == 0, remove full address
1003 * If session == 0 and addrlen == 0, destroy inbound address
1007 * @param value the 'struct ATS_Address'
1008 * @return GNUNET_OK (continue to iterate)
1011 destroy_by_session_id (void *cls,
1012 const struct GNUNET_PeerIdentity *key,
1015 struct DestroyContext *dc = cls;
1016 struct GAS_Addresses_Handle *handle = dc->handle;
1017 const struct ATS_Address *des = dc->aa;
1018 struct ATS_Address *aa = value;
1021 0 == memcmp (&aa->peer, &des->peer, sizeof(struct GNUNET_PeerIdentity)));
1023 if (des->session_id == 0)
1025 /* Session == 0, remove full address */
1026 if ((0 == strcmp (des->plugin, aa->plugin))
1027 && (aa->addr_len == des->addr_len)
1028 && (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
1031 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1032 "Deleting full address for peer `%s' session %u %p\n",
1033 GNUNET_i2s (&aa->peer), aa->session_id, aa);
1035 /* Notify solver about deletion */
1037 GNUNET_YES == GNUNET_CONTAINER_multipeermap_remove (handle->addresses,
1040 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
1042 dc->result = GNUNET_NO;
1043 return GNUNET_OK; /* Continue iteration */
1048 /* Session != 0, just remove session */
1049 if (aa->session_id != des->session_id)
1050 return GNUNET_OK; /* irrelevant */
1052 if ((aa->session_id != 0) && (0 != strcmp (des->plugin, aa->plugin)))
1054 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1055 "Different plugins during removal: `%s' vs `%s' \n", des->plugin,
1061 if (aa->addr_len == 0)
1063 /* Inbound connection died, delete full address */
1064 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1065 "Deleting inbound address for peer `%s': `%s' session %u\n",
1066 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1068 /* Notify solver about deletion */
1070 GNUNET_YES == GNUNET_CONTAINER_multipeermap_remove (handle->addresses,
1072 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
1074 dc->result = GNUNET_NO;
1075 return GNUNET_OK; /* Continue iteration */
1080 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1081 "Deleting session for peer `%s': `%s' %u\n", GNUNET_i2s (&aa->peer),
1082 aa->plugin, aa->session_id);
1083 /* Notify solver to delete session */
1084 handle->env.sf.s_del (handle->solver, aa, GNUNET_YES);
1086 aa->active = GNUNET_NO;
1095 * Remove an address or just a session for a peer.
1097 * @param handle the address handle to use
1099 * @param plugin_name transport plugin name
1100 * @param plugin_addr plugin address
1101 * @param plugin_addr_len length of the plugin address
1102 * @param local_address_info the local address for the address
1103 * @param session_id session id, can be 0
1106 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1107 const struct GNUNET_PeerIdentity *peer,
1108 const char *plugin_name,
1109 const void *plugin_addr,
1110 size_t plugin_addr_len,
1111 uint32_t local_address_info,
1112 uint32_t session_id)
1114 struct ATS_Address *ea;
1115 struct DestroyContext dc;
1116 if (GNUNET_NO == handle->running)
1119 /* Get existing address */
1120 ea = find_exact_address (handle, peer, plugin_name, plugin_addr,
1121 plugin_addr_len, local_address_info, session_id);
1124 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1125 "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1126 GNUNET_i2s (peer), plugin_name, session_id);
1130 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1131 "Received `%s' for peer `%s' address %p session %u\n", "ADDRESS DESTROY",
1132 GNUNET_i2s (peer), ea, session_id);
1134 GNUNET_break(0 < strlen (plugin_name));
1136 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
1137 local_address_info, session_id);
1139 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1141 &destroy_by_session_id, &dc);
1142 GNUNET_STATISTICS_set (handle->stat, "# addresses",
1143 GNUNET_CONTAINER_multipeermap_size (handle->addresses), GNUNET_NO);
1144 free_address (dc.aa);
1148 * Notification about active use of an address.
1149 * in_use == GNUNET_YES:
1150 * This address is used to maintain an active connection with a peer.
1151 * in_use == GNUNET_NO:
1152 * This address is no longer used to maintain an active connection with a peer.
1154 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1157 * @param handle the address handle to use
1159 * @param plugin_name transport plugin name
1160 * @param plugin_addr plugin address
1161 * @param plugin_addr_len length of the plugin address
1162 * @param local_address_info the local address for the address
1163 * @param session_id session id, can be 0
1164 * @param in_use GNUNET_YES if GNUNET_NO
1165 * @return GNUNET_SYSERR on failure (address unknown ...)
1168 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1169 const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
1170 const void *plugin_addr, size_t plugin_addr_len,
1171 uint32_t local_address_info,
1172 uint32_t session_id,
1175 struct ATS_Address *ea;
1176 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1177 "ADDRESS IN USE", GNUNET_i2s (peer));
1179 if (GNUNET_NO == handle->running)
1180 return GNUNET_SYSERR;
1182 ea = find_exact_address (handle, peer, plugin_name, plugin_addr,
1183 plugin_addr_len, local_address_info, session_id);
1186 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1187 "Trying to set unknown address `%s' `%s' `%u' to %s \n",
1188 GNUNET_i2s (peer), plugin_name, session_id,
1189 (GNUNET_NO == in_use) ? "NO" : "YES");
1191 return GNUNET_SYSERR;
1193 if (ea->used == in_use)
1196 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1197 "Address in use called multiple times for peer `%s': %s -> %s \n",
1198 GNUNET_i2s (peer), (GNUNET_NO == ea->used) ? "NO" : "YES",
1199 (GNUNET_NO == in_use) ? "NO" : "YES");
1200 return GNUNET_SYSERR;
1203 /* Tell solver about update */
1205 ea->t_last_activity = GNUNET_TIME_absolute_get();
1206 handle->env.sf.s_address_update_inuse (handle->solver, ea, ea->used);
1211 * Cancel address suggestions for a peer
1213 * @param handle the address handle
1214 * @param peer the peer id
1217 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1218 const struct GNUNET_PeerIdentity *peer)
1220 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1222 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received request: `%s' for peer %s\n",
1223 "request_address_cancel", GNUNET_i2s (peer));
1227 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1234 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1235 "No address requests pending for peer `%s', cannot remove!\n",
1239 handle->env.sf.s_get_stop (handle->solver, peer);
1240 GAS_addresses_handle_backoff_reset (handle, peer);
1241 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Removed request pending for peer `%s\n",
1243 GNUNET_CONTAINER_DLL_remove(handle->pending_requests_head, handle->pending_requests_tail, cur);
1249 * Request address suggestions for a peer
1251 * @param handle the address handle
1252 * @param peer the peer id
1255 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1256 const struct GNUNET_PeerIdentity *peer)
1258 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1259 struct ATS_Address *aa;
1261 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1262 "REQUEST ADDRESS", GNUNET_i2s (peer));
1264 if (GNUNET_NO == handle->running)
1268 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1269 break; /* already suggesting */
1274 cur = GNUNET_new (struct GAS_Addresses_Suggestion_Requests);
1276 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1277 "Adding new address suggestion request for `%s'\n",
1279 GNUNET_CONTAINER_DLL_insert(handle->pending_requests_head, handle->pending_requests_tail, cur);
1282 /* Get prefered address from solver */
1283 aa = (struct ATS_Address *) handle->env.sf.s_get (handle->solver, peer);
1286 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Cannot suggest address for peer `%s'\n",
1291 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Suggesting address %p for peer `%s'\n",
1292 aa, GNUNET_i2s (peer));
1294 GAS_scheduling_transmit_address_suggestion (peer, aa->plugin, aa->addr,
1295 aa->addr_len, aa->local_address_info, aa->session_id,
1296 aa->atsi, aa->atsi_count,
1297 aa->assigned_bw_out, aa->assigned_bw_in);
1299 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval,
1300 ATS_BLOCKING_DELTA);
1301 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
1302 aa->block_interval);
1304 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1305 "Address %p ready for suggestion, block interval now %llu \n", aa,
1306 aa->block_interval);
1310 * Iterator to reset address blocking
1312 * @param cls not used
1313 * @param key the peer
1314 * @param value the address to reset
1315 * @return #GNUNET_OK to continue
1318 reset_address_it (void *cls,
1319 const struct GNUNET_PeerIdentity *key,
1322 struct ATS_Address *aa = value;
1324 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1325 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1326 GNUNET_i2s (&aa->peer),
1328 aa->block_interval);
1329 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1330 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1336 * Reset suggestion backoff for a peer
1338 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1339 * reset using this function
1341 * @param handle the address handle
1342 * @param peer the peer id
1345 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1346 const struct GNUNET_PeerIdentity *peer)
1348 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1349 "RESET BACKOFF", GNUNET_i2s (peer));
1352 GNUNET_SYSERR != GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1354 &reset_address_it, NULL));
1359 eval_count_active_it (void *cls,
1360 const struct GNUNET_PeerIdentity *id,
1363 int *request_fulfilled = cls;
1364 struct ATS_Address *addr = obj;
1366 if (GNUNET_YES == addr->active)
1367 (*request_fulfilled) = GNUNET_YES;
1369 if (*request_fulfilled == GNUNET_YES)
1379 struct SummaryContext
1382 * Sum of the utilized inbound bandwidth per network
1384 unsigned long long bandwidth_in_assigned[GNUNET_ATS_NetworkTypeCount];
1387 * Sum of the utilized outbound bandwidth per network
1389 unsigned long long bandwidth_out_assigned[GNUNET_ATS_NetworkTypeCount];
1392 * Sum addresses within a network
1394 unsigned int addresses_in_network[GNUNET_ATS_NetworkTypeCount];
1399 eval_sum_bw_used (void *cls, const struct GNUNET_PeerIdentity *id, void *obj)
1401 struct SummaryContext *ctx = cls;
1402 struct ATS_Address *addr = obj;
1403 int networks[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1407 if (GNUNET_YES == addr->active)
1409 net = get_performance_info (addr, GNUNET_ATS_NETWORK_TYPE);
1410 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1412 if (net == networks[c])
1414 ctx->addresses_in_network[c] ++;
1415 ctx->bandwidth_in_assigned[c] += ntohl (addr->assigned_bw_in.value__);
1416 ctx->bandwidth_out_assigned[c] += ntohl (addr->assigned_bw_out.value__);
1419 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1420 "Active address in %s with (in/out) %u/%u Bps\n",
1421 GNUNET_ATS_print_network_type (net),
1422 (unsigned int) ntohl (addr->assigned_bw_in.value__),
1423 (unsigned int) ntohl (addr->assigned_bw_out.value__));
1432 struct RelativityContext
1435 struct GAS_Addresses_Handle *ah;
1440 find_active_address (void *cls, const struct GNUNET_PeerIdentity *id, void *obj)
1442 struct ATS_Address **res = cls;
1443 struct ATS_Address *addr = obj;
1445 if (GNUNET_YES == addr->active)
1455 * Evaluate current bandwidth assignment
1457 * @param ah address handle
1460 GAS_addresses_evaluate_assignment (struct GAS_Addresses_Handle *ah)
1462 struct GAS_Addresses_Suggestion_Requests *cur;
1463 struct GAS_Addresses_Preference_Clients *pcur;
1466 float quality_requests_fulfilled = 0.0;
1467 float quality_bandwidth_utilization[GNUNET_ATS_NetworkTypeCount];
1468 float quality_bandwidth_utilization_total = 0.0;
1469 float quality_application_requirements = 0.0;
1472 int include_requests;
1473 int include_utilization;
1474 int include_requirements;
1476 /* Variable related to requests */
1477 unsigned int requests_pending;
1478 unsigned int requests_fulfilled;
1479 unsigned int request_active;
1481 /* Variable related to utilization */
1482 struct SummaryContext sum;
1483 struct ATS_Address *active_address;
1486 /* Variables for preferences */
1487 int prefs[GNUNET_ATS_PreferenceCount] = GNUNET_ATS_PreferenceType;
1490 const double *norm_values;
1491 double prefs_fulfill[GNUNET_ATS_PreferenceCount];
1492 int prefs_clients[GNUNET_ATS_PreferenceCount];
1495 GNUNET_assert (NULL != ah);
1496 GNUNET_assert (NULL != ah->addresses);
1498 requests_pending = 0;
1499 requests_fulfilled = 0;
1500 /* 1) How many requests could be fulfilled? */
1501 for (cur = ah->pending_requests_head; NULL != cur; cur = cur->next)
1503 request_active = GNUNET_NO;
1504 GNUNET_CONTAINER_multipeermap_get_multiple (ah->addresses,
1505 &cur->id, &eval_count_active_it, &request_active);
1506 if (GNUNET_YES == request_active)
1507 requests_fulfilled ++;
1508 requests_pending ++;
1509 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer `%s': %u pending requests, %s\n",
1510 GNUNET_i2s (&cur->id),
1512 (GNUNET_YES == request_active) ? "active adress" : "no active address");
1515 if (requests_pending > 0)
1517 quality_requests_fulfilled = (float) requests_fulfilled / requests_pending;
1518 include_requests = GNUNET_YES;
1522 quality_requests_fulfilled = 0.0;
1523 include_requests = GNUNET_NO;
1525 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%u pending requests, %u requests fullfilled\n",
1526 requests_pending, requests_fulfilled);
1528 /* 2) How well is bandwidth utilized? */
1530 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1532 quality_bandwidth_utilization[c] = 0.0;
1533 sum.addresses_in_network[c] = 0;
1534 sum.bandwidth_in_assigned[c] = 0;
1535 sum.bandwidth_out_assigned[c] = 0;
1537 GNUNET_CONTAINER_multipeermap_iterate(ah->addresses,
1538 &eval_sum_bw_used, &sum);
1539 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1541 quality_bandwidth_utilization[c] = (((float)sum.bandwidth_out_assigned[c] / ah->env.out_quota[c]) +
1542 ((float)sum.bandwidth_in_assigned[c] / ah->env.in_quota[c])) / 2;
1544 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Utilization for network `%s': %f\n",
1545 GNUNET_ATS_print_network_type(ah->env.networks[c]),
1546 quality_bandwidth_utilization[c]);
1547 if (sum.addresses_in_network[c] > 0)
1549 quality_bandwidth_utilization_total += quality_bandwidth_utilization[c];
1553 if (0 < network_count)
1555 quality_bandwidth_utilization_total /= network_count;
1556 include_utilization = GNUNET_YES;
1560 quality_bandwidth_utilization_total = 0.0;
1561 include_utilization = GNUNET_NO;
1564 /* 3) How well does selection match application requirements */
1565 if (0 == ah->pref_clients)
1567 include_requirements = 0;
1571 for (c = 0; c < GNUNET_ATS_PreferenceCount; c++)
1573 prefs_fulfill[c] = 0.0;
1574 prefs_clients[c] = 0;
1577 for (cur = ah->pending_requests_head; NULL != cur; cur = cur->next)
1579 active_address = NULL;
1580 GNUNET_CONTAINER_multipeermap_get_multiple (ah->addresses,
1581 &cur->id, &find_active_address, &active_address);
1583 for (pcur = ah->preference_clients_head; NULL != pcur; pcur = pcur->next)
1585 for (c = 0; c < GNUNET_ATS_PreferenceCount; c++)
1587 if (prefs[c] == GNUNET_ATS_PREFERENCE_END)
1589 pref_val = GAS_normalization_get_preferences_by_client (pcur->client, &cur->id, prefs[c]);
1590 if (-1.0 == pref_val)
1596 if (DEFAULT_REL_PREFERENCE == pref_val)
1598 /* Default preference value */
1602 if (NULL != active_address)
1604 norm_values = GAS_normalization_get_properties (active_address);
1605 prop_val = norm_values[c];
1606 if ((norm_values[c] <= 1.0) || (norm_values[c] >= 2.0))
1607 prop_val = DEFAULT_REL_QUALITY;
1611 prop_val = DEFAULT_REL_QUALITY;
1614 /* We now have preference values [1..2] and properties [1..2] */
1616 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%u Client %p, Peer %s Property %s: pref: %.3f prop %.3f \n",
1619 GNUNET_i2s (&cur->id),
1620 GNUNET_ATS_print_preference_type(prefs[c]),
1624 prefs_fulfill[c] += (pref_val * prop_val) / 2;
1625 prefs_clients[c] ++;
1630 for (c = 0; c < GNUNET_ATS_PreferenceCount; c++)
1632 if (0 < prefs_clients[c])
1634 prefs_fulfill[c] /= prefs_clients[c];
1636 quality_application_requirements += prefs_fulfill[c];
1640 quality_application_requirements /= rels;
1642 quality_application_requirements = 0.0;
1644 include_requirements = 1;
1648 if (include_requests + include_utilization + include_requirements > 0)
1649 guq = (quality_requests_fulfilled + quality_bandwidth_utilization_total + quality_application_requirements) /
1650 (include_requests + include_utilization + include_requirements);
1654 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1655 "Requests fulfilled %.3f bandwidth utilized %.3f application preferences met %.3f => %.3f\n",
1656 quality_requests_fulfilled,
1657 quality_bandwidth_utilization_total,
1658 quality_application_requirements,
1663 * Solver information callback
1665 * @param cls the closure
1666 * @param op the operation
1667 * @param stat operation status
1668 * @param add additional information
1672 solver_info_cb (void *cls,
1673 enum GAS_Solver_Operation op,
1674 enum GAS_Solver_Status stat,
1675 enum GAS_Solver_Additional_Information add)
1681 add_info = "GAS_INFO_NONE";
1684 add_info = "GAS_INFO_MLP_FULL";
1686 case GAS_INFO_UPDATED:
1687 add_info = "GAS_INFO_MLP_UPDATED";
1689 case GAS_INFO_PROP_ALL:
1690 add_info = "GAS_INFO_PROP_ALL";
1692 case GAS_INFO_PROP_SINGLE:
1693 add_info = "GAS_INFO_PROP_SINGLE";
1696 add_info = "INVALID";
1701 case GAS_OP_SOLVE_START:
1702 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1703 "Solver notifies `%s' with result `%s' `%s'\n", "GAS_OP_SOLVE_START",
1704 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1706 case GAS_OP_SOLVE_STOP:
1707 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1708 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_STOP",
1709 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1712 case GAS_OP_SOLVE_SETUP_START:
1713 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1714 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_START",
1715 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1718 case GAS_OP_SOLVE_SETUP_STOP:
1719 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1720 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_STOP",
1721 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1724 case GAS_OP_SOLVE_MLP_LP_START:
1725 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1726 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_START",
1727 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1729 case GAS_OP_SOLVE_MLP_LP_STOP:
1730 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1731 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_STOP",
1732 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1735 case GAS_OP_SOLVE_MLP_MLP_START:
1736 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1737 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_START",
1738 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1740 case GAS_OP_SOLVE_MLP_MLP_STOP:
1741 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1742 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_STOP",
1743 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1745 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_START:
1746 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1747 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_START",
1748 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1750 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP:
1751 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1752 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP",
1753 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1754 GAS_addresses_evaluate_assignment (cls);
1763 * The preference changed for a peer
1765 * @param cls the address handle
1766 * @param peer the peer
1767 * @param kind the ATS kind
1768 * @param pref_rel the new relative preference value
1771 normalized_preference_changed_cb (void *cls,
1772 const struct GNUNET_PeerIdentity *peer, enum GNUNET_ATS_PreferenceKind kind,
1775 GNUNET_assert(NULL != cls);
1776 struct GAS_Addresses_Handle *handle = cls;
1778 /* Tell solver about update */
1779 handle->env.sf.s_pref (handle->solver, peer, kind, pref_rel);
1783 * The relative value for a property changed
1785 * @param cls the address handle
1786 * @param address the peer
1787 * @param type the ATS type
1788 * @param prop_rel the new relative preference value
1791 normalized_property_changed_cb (void *cls, struct ATS_Address *address,
1792 uint32_t type, double prop_rel)
1794 struct GAS_Addresses_Handle *ah = (struct GAS_Addresses_Handle *) cls;
1795 GNUNET_assert(NULL != ah);
1797 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1798 "Normalized property %s for peer `%s' changed to %.3f \n",
1799 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1802 ah->env.sf.s_address_update_property (ah->solver, address, type, 0, prop_rel);
1805 static struct GAS_Addresses_Preference_Clients *
1806 find_preference_client (struct GAS_Addresses_Handle *handle, void *client)
1808 struct GAS_Addresses_Preference_Clients *cur;
1810 for (cur = handle->preference_clients_head; NULL != cur; cur = cur->next)
1812 if (cur->client == client)
1819 * A performance client disconnected
1821 * @param handle address handle
1822 * @param client the client
1826 GAS_addresses_preference_client_disconnect (struct GAS_Addresses_Handle *handle,
1829 struct GAS_Addresses_Preference_Clients * pc;
1830 if (NULL != (pc = find_preference_client (handle, client)))
1832 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
1833 handle->preference_clients_tail, pc);
1835 GNUNET_assert (handle->pref_clients > 0);
1836 handle->pref_clients --;
1837 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
1839 GAS_normalization_preference_client_disconnect (client);
1843 * Change the preference for a peer
1845 * @param handle the address handle
1846 * @param client the client sending this request
1847 * @param peer the peer id
1848 * @param kind the preference kind to change
1849 * @param score_abs the new preference score
1852 GAS_addresses_preference_change (struct GAS_Addresses_Handle *handle,
1853 void *client, const struct GNUNET_PeerIdentity *peer,
1854 enum GNUNET_ATS_PreferenceKind kind, float score_abs)
1856 struct GAS_Addresses_Preference_Clients * pc;
1857 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1858 "Received `%s' for peer `%s' for client %p\n", "CHANGE PREFERENCE",
1859 GNUNET_i2s (peer), client);
1861 if (GNUNET_NO == handle->running)
1865 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1868 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1869 "Received `%s' for unknown peer `%s' from client %p\n",
1870 "CHANGE PREFERENCE", GNUNET_i2s (peer), client);
1874 if (NULL == find_preference_client (handle, client))
1876 pc = GNUNET_new (struct GAS_Addresses_Preference_Clients);
1877 pc->client = client;
1878 GNUNET_CONTAINER_DLL_insert (handle->preference_clients_head,
1879 handle->preference_clients_tail, pc);
1880 handle->pref_clients ++;
1881 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
1884 handle->env.sf.s_bulk_start (handle->solver);
1885 /* Tell normalization about change, normalization will call callback if preference changed */
1886 GAS_normalization_normalize_preference (client, peer, kind, score_abs);
1887 handle->env.sf.s_bulk_stop (handle->solver);
1891 * Change the preference for a peer
1893 * @param handle the address handle
1894 * @param application the client sending this request
1895 * @param peer the peer id
1896 * @param scope the time interval for this feedback: [now - scope .. now]
1897 * @param kind the preference kind to change
1898 * @param score_abs the new preference score
1901 GAS_addresses_preference_feedback (struct GAS_Addresses_Handle *handle,
1902 void *application, const struct GNUNET_PeerIdentity *peer,
1903 const struct GNUNET_TIME_Relative scope,
1904 enum GNUNET_ATS_PreferenceKind kind, float score_abs)
1906 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1907 "Received `%s' for peer `%s' for client %p\n", "PREFERENCE FEEDBACK",
1908 GNUNET_i2s (peer), application);
1910 if (GNUNET_NO == handle->running)
1914 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1917 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1918 "Received `%s' for unknown peer `%s' from client %p\n",
1919 "PREFERENCE FEEDBACK", GNUNET_i2s (peer), application);
1923 handle->env.sf.s_feedback (handle->solver, application, peer, scope, kind,
1928 * Load quotas for networks from configuration
1930 * @param cfg configuration handle
1931 * @param out_dest where to write outbound quotas
1932 * @param in_dest where to write inbound quotas
1933 * @param dest_length length of inbound and outbound arrays
1934 * @return number of networks loaded
1937 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg,
1938 unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1940 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1941 char * entry_in = NULL;
1942 char * entry_out = NULL;
1943 char * quota_out_str;
1944 char * quota_in_str;
1948 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1952 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1953 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1957 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_out,
1961 if (0 == strcmp (quota_out_str, GNUNET_ATS_MaxBandwidthString))
1963 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1966 if ((GNUNET_NO == res)
1968 == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str,
1971 if ((GNUNET_NO == res)
1973 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out,
1977 if (GNUNET_NO == res)
1979 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1980 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1981 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1982 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1986 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1987 _("Outbound quota configure for network `%s' is %llu\n"),
1988 network_str[c], out_dest[c]);
1990 GNUNET_free(quota_out_str);
1994 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1995 _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1996 network_str[c], GNUNET_ATS_DefaultBandwidth);
1997 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
2002 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_in,
2006 if (0 == strcmp (quota_in_str, GNUNET_ATS_MaxBandwidthString))
2008 in_dest[c] = GNUNET_ATS_MaxBandwidth;
2011 if ((GNUNET_NO == res)
2013 == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
2015 if ((GNUNET_NO == res)
2017 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in,
2021 if (GNUNET_NO == res)
2023 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
2024 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
2025 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
2026 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
2030 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
2031 _("Inbound quota configured for network `%s' is %llu\n"),
2032 network_str[c], in_dest[c]);
2034 GNUNET_free(quota_in_str);
2038 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
2039 _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
2040 network_str[c], GNUNET_ATS_DefaultBandwidth);
2041 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
2043 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
2044 "Loaded quota for network `%s' (in/out): %llu %llu\n", network_str[c],
2045 in_dest[c], out_dest[c]);
2046 GNUNET_free(entry_out);
2047 GNUNET_free(entry_in);
2049 return GNUNET_ATS_NetworkTypeCount;
2053 * Callback for solver to notify about assignment changes
2055 * @param cls the GAS_Addresses_Handle
2056 * @param address the address with changes
2059 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
2061 struct GAS_Addresses_Handle *handle = cls;
2062 struct GAS_Addresses_Suggestion_Requests *cur;
2064 GNUNET_assert(handle != NULL);
2065 GNUNET_assert(address != NULL);
2067 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
2068 "Bandwidth assignment changed for peer %s \n",
2069 GNUNET_i2s (&address->peer));
2071 /* Notify performance clients about changes to address */
2072 GAS_performance_notify_all_clients (&address->peer, address->plugin,
2073 address->addr, address->addr_len, address->session_id, address->atsi,
2074 address->atsi_count, address->assigned_bw_out, address->assigned_bw_in);
2075 cur = handle->pending_requests_head;
2078 if (0 == memcmp (&address->peer, &cur->id, sizeof(cur->id)))
2079 break; /* we have an address request pending*/
2084 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
2085 "Nobody is interested in peer `%s' :(\n",
2086 GNUNET_i2s (&address->peer));
2090 if ((0 == ntohl (address->assigned_bw_in.value__))
2091 && (0 == ntohl (address->assigned_bw_out.value__)))
2093 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2094 "Telling transport to disconnect peer `%s'\n",
2095 GNUNET_i2s (&address->peer));
2099 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
2100 "Sending bandwidth update for peer `%s': %u %u\n",
2101 GNUNET_i2s (&address->peer),
2102 (unsigned int) ntohl (address->assigned_bw_out.value__),
2103 (unsigned int) ntohl (address->assigned_bw_out.value__));
2106 /* *Notify scheduling clients about suggestion */
2107 GAS_scheduling_transmit_address_suggestion (&address->peer, address->plugin,
2108 address->addr, address->addr_len, address->local_address_info,
2109 address->session_id, address->atsi,
2110 address->atsi_count, address->assigned_bw_out, address->assigned_bw_in);
2115 * Initialize address subsystem. The addresses subsystem manages the addresses
2116 * known and current performance information. It has a solver component
2117 * responsible for the resource allocation. It tells the solver about changes
2118 * and receives updates when the solver changes the resource allocation.
2120 * @param cfg configuration to use
2121 * @param stats the statistics handle to use
2122 * @return an address handle
2124 struct GAS_Addresses_Handle *
2125 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
2126 const struct GNUNET_STATISTICS_Handle *stats)
2128 struct GAS_Addresses_Handle *ah;
2129 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
2130 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
2135 ah = GNUNET_new (struct GAS_Addresses_Handle);
2136 ah->running = GNUNET_NO;
2138 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
2139 /* Initialize the addresses database */
2140 ah->addresses = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
2141 ah->pref_clients = 0;
2142 GNUNET_assert(NULL != ah->addresses);
2144 /* Figure out configured solution method */
2146 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
2148 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
2149 "No resource assignment method configured, using proportional approach\n");
2150 ah->ats_mode = MODE_PROPORTIONAL;
2154 for (c = 0; c < strlen (mode_str); c++)
2155 mode_str[c] = toupper (mode_str[c]);
2156 if (0 == strcmp (mode_str, "PROPORTIONAL"))
2157 ah->ats_mode = MODE_PROPORTIONAL;
2158 else if (0 == strcmp (mode_str, "MLP"))
2160 ah->ats_mode = MODE_MLP;
2162 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
2163 "Assignment method `%s' configured, but GLPK is not available, please install \n",
2165 ah->ats_mode = MODE_PROPORTIONAL;
2168 else if (0 == strcmp (mode_str, "RIL"))
2169 ah->ats_mode = MODE_RIL;
2172 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
2173 "Invalid resource assignment method `%s' configured, using proportional approach\n",
2175 ah->ats_mode = MODE_PROPORTIONAL;
2177 GNUNET_free(mode_str);
2180 load_quotas (cfg, quotas_out, quotas_in, GNUNET_ATS_NetworkTypeCount);
2181 ah->env.info_cb = &solver_info_cb;
2182 ah->env.info_cb_cls = ah;
2183 ah->env.bandwidth_changed_cb = &bandwidth_changed_cb;
2184 ah->env.bw_changed_cb_cls = ah;
2185 ah->env.get_preferences = &get_preferences_cb;
2186 ah->env.get_preference_cls = ah;
2187 ah->env.get_property = &get_property_cb;
2188 ah->env.get_property_cls = ah;
2190 ah->env.stats = stats;
2191 ah->env.addresses = ah->addresses;
2193 ah->env.network_count = GNUNET_ATS_NetworkTypeCount;
2194 int networks[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
2195 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
2197 ah->env.networks[c] = networks[c];
2198 ah->env.out_quota[c] = quotas_out[c];
2199 ah->env.in_quota[c] = quotas_in[c];
2202 switch (ah->ats_mode) {
2203 case MODE_PROPORTIONAL:
2204 plugin_short = "proportional";
2207 plugin_short = "mlp";
2210 plugin_short = "ril";
2213 plugin_short = NULL;
2216 GNUNET_asprintf (&ah->plugin, "libgnunet_plugin_ats_%s", plugin_short);
2217 GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Initializing solver `%s '`%s'\n"), plugin_short, ah->plugin);
2218 if (NULL == (ah->solver = GNUNET_PLUGIN_load (ah->plugin, &ah->env)))
2220 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Failed to initialize solver `%s'!\n"), ah->plugin);
2224 GNUNET_assert (NULL != ah->env.sf.s_add);
2225 GNUNET_assert (NULL != ah->env.sf.s_address_update_inuse);
2226 GNUNET_assert (NULL != ah->env.sf.s_address_update_property);
2227 GNUNET_assert (NULL != ah->env.sf.s_address_update_session);
2228 GNUNET_assert (NULL != ah->env.sf.s_address_update_network);
2229 GNUNET_assert (NULL != ah->env.sf.s_get);
2230 GNUNET_assert (NULL != ah->env.sf.s_get_stop);
2231 GNUNET_assert (NULL != ah->env.sf.s_pref);
2232 GNUNET_assert (NULL != ah->env.sf.s_feedback);
2233 GNUNET_assert (NULL != ah->env.sf.s_del);
2234 GNUNET_assert (NULL != ah->env.sf.s_bulk_start);
2235 GNUNET_assert (NULL != ah->env.sf.s_bulk_stop);
2238 GAS_normalization_start (&normalized_preference_changed_cb, ah,
2239 &normalized_property_changed_cb, ah);
2241 if (NULL == ah->solver)
2243 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Failed to initialize solver!\n"));
2247 /* up and running */
2248 ah->running = GNUNET_YES;
2250 GNUNET_STATISTICS_set (ah->stat, "# addresses",
2251 GNUNET_CONTAINER_multipeermap_size (ah->addresses), GNUNET_NO);
2257 * Destroy all addresses iterator
2260 * @param key peer identity (unused)
2261 * @param value the 'struct ATS_Address' to free
2262 * @return #GNUNET_OK (continue to iterate)
2265 destroy_all_address_it (void *cls,
2266 const struct GNUNET_PeerIdentity *key,
2269 struct GAS_Addresses_Handle *handle = cls;
2270 struct ATS_Address *aa = value;
2273 GNUNET_assert(GNUNET_YES ==
2274 GNUNET_CONTAINER_multipeermap_remove (handle->addresses, key, value));
2276 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
2285 * Remove all addresses
2287 * @param handle the address handle to use
2290 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
2292 if (GNUNET_NO == handle->running)
2295 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Destroying all addresses\n");
2296 handle->env.sf.s_bulk_start (handle->solver);
2297 if (handle->addresses != NULL )
2298 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2299 &destroy_all_address_it,
2301 handle->env.sf.s_bulk_start (handle->solver);
2306 * Shutdown address subsystem.
2308 * @param handle the address handle to shutdown
2311 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
2313 struct GAS_Addresses_Suggestion_Requests *cur;
2314 struct GAS_Addresses_Preference_Clients *pcur;
2316 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Shutting down addresses\n");
2317 GNUNET_assert(NULL != handle);
2318 GAS_addresses_destroy_all (handle);
2319 handle->running = GNUNET_NO;
2320 GNUNET_CONTAINER_multipeermap_destroy (handle->addresses);
2321 handle->addresses = NULL;
2322 while (NULL != (cur = handle->pending_requests_head))
2324 GNUNET_CONTAINER_DLL_remove(handle->pending_requests_head, handle->pending_requests_tail, cur);
2328 while (NULL != (pcur = handle->preference_clients_head))
2330 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
2331 handle->preference_clients_tail, pcur);
2332 GNUNET_assert (handle->pref_clients > 0);
2333 handle->pref_clients --;
2334 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
2338 GNUNET_PLUGIN_unload (handle->plugin, handle->solver);
2339 GNUNET_free (handle->plugin);
2340 GNUNET_free(handle);
2341 /* Stop configured solution method */
2342 GAS_normalization_stop ();
2346 struct PeerIteratorContext
2348 GNUNET_ATS_Peer_Iterator it;
2350 struct GNUNET_CONTAINER_MultiPeerMap *peers_returned;
2355 * Iterator to iterate over all peers
2357 * @param cls a PeerIteratorContext
2358 * @param key the peer id
2359 * @param value the ATS_address
2360 * @return #GNUNET_OK to continue
2364 const struct GNUNET_PeerIdentity *key,
2367 struct PeerIteratorContext *ip_ctx = cls;
2370 GNUNET_CONTAINER_multipeermap_contains (ip_ctx->peers_returned, key))
2372 GNUNET_CONTAINER_multipeermap_put (ip_ctx->peers_returned, key, NULL,
2373 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2374 ip_ctx->it (ip_ctx->it_cls, key);
2381 * Return information all peers currently known to ATS
2383 * @param handle the address handle to use
2384 * @param p_it the iterator to call for every peer
2385 * @param p_it_cls the closure for the iterator
2388 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
2389 GNUNET_ATS_Peer_Iterator p_it, void *p_it_cls)
2391 struct PeerIteratorContext ip_ctx;
2396 GNUNET_assert(NULL != handle->addresses);
2398 size = GNUNET_CONTAINER_multipeermap_size (handle->addresses);
2402 ip_ctx.it_cls = p_it_cls;
2403 ip_ctx.peers_returned = GNUNET_CONTAINER_multipeermap_create (size,
2405 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2408 GNUNET_CONTAINER_multipeermap_destroy (ip_ctx.peers_returned);
2410 p_it (p_it_cls, NULL );
2413 struct PeerInfoIteratorContext
2415 GNUNET_ATS_PeerInfo_Iterator it;
2421 * Iterator to iterate over a peer's addresses
2423 * @param cls a `struct PeerInfoIteratorContext`
2424 * @param key the peer id
2425 * @param value the `struct ATS_address`
2426 * @return #GNUNET_OK to continue
2429 peerinfo_it (void *cls,
2430 const struct GNUNET_PeerIdentity *key,
2433 struct PeerInfoIteratorContext *pi_ctx = cls;
2434 struct ATS_Address *addr = value;
2436 if (NULL != pi_ctx->it)
2438 pi_ctx->it (pi_ctx->it_cls, &addr->peer, addr->plugin, addr->addr,
2439 addr->addr_len, addr->active, addr->atsi, addr->atsi_count,
2440 addr->assigned_bw_out, addr->assigned_bw_in);
2447 * Return information all peers currently known to ATS
2449 * @param handle the address handle to use
2450 * @param peer the respective peer
2451 * @param pi_it the iterator to call for every peer
2452 * @param pi_it_cls the closure for the iterator
2455 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
2456 const struct GNUNET_PeerIdentity *peer, GNUNET_ATS_PeerInfo_Iterator pi_it,
2459 struct PeerInfoIteratorContext pi_ctx;
2460 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
2462 GNUNET_assert(NULL != peer);
2463 GNUNET_assert(NULL != handle->addresses);
2465 return; /* does not make sense without callback */
2467 zero_bw = GNUNET_BANDWIDTH_value_init (0);
2469 pi_ctx.it_cls = pi_it_cls;
2471 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
2473 &peerinfo_it, &pi_ctx);
2476 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw,
2481 /* end of gnunet-service-ats_addresses.c */