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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 session_id session
476 * @return the ATS_Address
478 static struct ATS_Address *
479 create_address (const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
480 const void *plugin_addr, size_t plugin_addr_len, uint32_t session_id)
482 struct ATS_Address *aa = NULL;
486 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
488 aa->addr_len = plugin_addr_len;
490 memcpy (&aa[1], plugin_addr, plugin_addr_len);
491 aa->plugin = GNUNET_strdup (plugin_name);
492 aa->session_id = session_id;
493 aa->active = GNUNET_NO;
494 aa->used = GNUNET_NO;
495 aa->solver_information = NULL;
498 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init (0);
499 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init (0);
501 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1++)
503 aa->atsin[c1].avg_queue_index = 0;
504 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
505 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
511 struct CompareAddressContext
513 const struct ATS_Address *search;
515 /* exact_address != NULL if address and session is equal */
516 struct ATS_Address *exact_address;
517 /* exact_address != NULL if address and session is 0 */
518 struct ATS_Address *base_address;
525 * @param cls a CompareAddressContext containin the source address
527 * @param value the address to compare with
528 * @return #GNUNET_YES to continue, #GNUNET_NO if address is founce
531 compare_address_it (void *cls,
532 const struct GNUNET_PeerIdentity *key,
535 struct CompareAddressContext *cac = cls;
536 struct ATS_Address *aa = value;
538 /* Find an matching exact address:
541 * aa->addr_len == cac->search->addr_len
542 * aa->plugin == cac->search->plugin
543 * aa->addr == cac->search->addr
544 * aa->session == cac->search->session
546 * return as exact address
548 if ((aa->addr_len == cac->search->addr_len)
549 && (0 == strcmp (aa->plugin, cac->search->plugin)))
551 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len))
552 && (aa->session_id == cac->search->session_id))
553 cac->exact_address = aa;
556 /* Find an matching base address:
560 * aa->session_id == 0
563 * aa->addr_len == cac->search->addr_len
564 * aa->plugin == cac->search->plugin
565 * aa->addr == cac->search->addr
567 * return as base address
569 if ((aa->addr_len == cac->search->addr_len)
570 && (0 == strcmp (aa->plugin, cac->search->plugin)))
572 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len))
573 && (aa->session_id == 0))
574 cac->base_address = aa;
577 /* Find an matching exact address based on session:
581 * cac->search->addr_len == 0
584 * aa->plugin == cac->search->plugin
585 * aa->session_id == cac->search->session_id
587 * return as exact address
589 if (0 == cac->search->addr_len)
591 if ((0 == strcmp (aa->plugin, cac->search->plugin))
592 && (aa->session_id == cac->search->session_id))
593 cac->exact_address = aa;
596 if (cac->exact_address == NULL )
597 return GNUNET_YES; /* Continue iteration to find exact address */
599 return GNUNET_NO; /* Stop iteration since we have an exact address */
603 * Find an existing equivalent address record.
604 * Compares by peer identity and network address OR by session ID
605 * (one of the two must match).
607 * @param handle the address handle
608 * @param peer peer to lookup addresses for
609 * @param addr existing address record
610 * @return existing address record, NULL for none
613 find_equivalent_address (struct GAS_Addresses_Handle *handle,
614 const struct GNUNET_PeerIdentity *peer, const struct ATS_Address *addr)
616 struct CompareAddressContext cac;
618 cac.exact_address = NULL;
619 cac.base_address = NULL;
621 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
623 &compare_address_it, &cac);
625 if (cac.exact_address == NULL)
626 return cac.base_address;
627 return cac.exact_address;
632 * Find the exact address
634 * @param handle the address handle to use
636 * @param plugin_name transport plugin name
637 * @param plugin_addr plugin address
638 * @param plugin_addr_len length of the plugin address
639 * @param session_id session id, can be 0
640 * @return an ATS_address or NULL
643 static struct ATS_Address *
644 find_exact_address (struct GAS_Addresses_Handle *handle,
645 const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
646 const void *plugin_addr, size_t plugin_addr_len, uint32_t session_id)
648 struct ATS_Address *aa;
649 struct ATS_Address *ea;
651 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
654 /* Get existing address or address with session == 0 */
655 ea = find_equivalent_address (handle, peer, aa);
659 else if (ea->session_id != session_id)
665 * Function allowing the solver to obtain normalized preference
669 * @param id the peer to return the normalized properties for
670 * @return array of double values with |GNUNET_ATS_PreferenceCount| elements
673 get_preferences_cb (void *cls, const struct GNUNET_PeerIdentity *id)
675 return GAS_normalization_get_preferences_by_peer (id);
679 * Function allowing the solver to obtain normalized property
680 * values for an address from solver
683 * @param address the address
684 * @return array of double values with |GNUNET_ATS_QualityPropertiesCount| elements
687 get_property_cb (void *cls, const struct ATS_Address *address)
689 return GAS_normalization_get_properties ((struct ATS_Address *) address);
693 * Extract an ATS performance info from an address
695 * @param address the address
696 * @param type the type to extract in HBO
697 * @return the value in HBO or GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
700 get_performance_info (struct ATS_Address *address, uint32_t type)
703 GNUNET_assert(NULL != address);
705 if ((NULL == address->atsi) || (0 == address->atsi_count))
706 return GNUNET_ATS_VALUE_UNDEFINED;
708 for (c1 = 0; c1 < address->atsi_count; c1++)
710 if (ntohl (address->atsi[c1].type) == type)
711 return ntohl (address->atsi[c1].value);
713 return GNUNET_ATS_VALUE_UNDEFINED;
717 * Add a new address for a peer.
719 * @param handle the address handle to use
721 * @param plugin_name transport plugin name
722 * @param plugin_addr plugin address
723 * @param plugin_addr_len length of the plugin address
724 * @param session_id session id, can be 0
725 * @param atsi performance information for this address
726 * @param atsi_count number of performance information contained
729 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
730 const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
731 const void *plugin_addr, size_t plugin_addr_len, uint32_t session_id,
732 const struct GNUNET_ATS_Information *atsi, uint32_t atsi_count)
734 struct ATS_Address *new_address;
735 struct ATS_Address *existing_address;
736 struct GNUNET_ATS_Information *atsi_delta;
737 uint32_t atsi_delta_count;
739 uint32_t previous_session;
742 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
743 "ADDRESS ADD", GNUNET_i2s (peer));
745 if (GNUNET_NO == handle->running)
748 GNUNET_assert(NULL != handle->addresses);
750 new_address = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
753 disassemble_ats_information (new_address, atsi, atsi_count, &atsi_delta,
755 GNUNET_free_non_null(atsi_delta);
756 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
757 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
758 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
760 /* Get existing address or address with session == 0 */
761 existing_address = find_equivalent_address (handle, peer, new_address);
762 if (existing_address == NULL )
764 /* Add a new address */
765 new_address->t_added = GNUNET_TIME_absolute_get();
766 new_address->t_last_activity = GNUNET_TIME_absolute_get();
768 GNUNET_OK == GNUNET_CONTAINER_multipeermap_put (handle->addresses,
771 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
773 GNUNET_STATISTICS_set (handle->stat, "# addresses",
774 GNUNET_CONTAINER_multipeermap_size (handle->addresses), GNUNET_NO);
776 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
777 "Adding new address %p for peer `%s', length %u, session id %u, %s\n",
780 plugin_addr_len, session_id,
781 GNUNET_ATS_print_network_type (addr_net));
783 /* Tell solver about new address */
784 handle->env.sf.s_add (handle->solver, new_address, addr_net);
786 handle->env.sf.s_bulk_start (handle->solver);
787 GAS_normalization_normalize_property (handle->addresses, new_address, atsi,
789 handle->env.sf.s_bulk_stop (handle->solver);
791 /* Notify performance clients about new address */
792 GAS_performance_notify_all_clients (&new_address->peer, new_address->plugin,
793 new_address->addr, new_address->addr_len, new_address->session_id,
794 new_address->atsi, new_address->atsi_count,
795 new_address->assigned_bw_out, new_address->assigned_bw_in);
799 /* We have an existing address we can use, clean up new */
800 GNUNET_free(new_address->plugin);
801 GNUNET_free_non_null(new_address->atsi);
802 GNUNET_free(new_address);
805 if (0 != existing_address->session_id)
807 /* Should not happen */
812 addr_net = get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE);
813 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
814 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
816 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
817 "Found existing address for peer `%s' %p with new session %u in network %s\n",
818 GNUNET_i2s (peer), existing_address, session_id,
819 GNUNET_ATS_print_network_type (addr_net));
820 /* We have an address without an session, update this address */
821 existing_address->t_added = GNUNET_TIME_absolute_get();
822 existing_address->t_last_activity = GNUNET_TIME_absolute_get();
824 atsi_delta_count = 0;
826 == disassemble_ats_information (existing_address, atsi, atsi_count,
827 &atsi_delta, &atsi_delta_count))
829 /* Notify performance clients about properties */
830 GAS_performance_notify_all_clients (&existing_address->peer,
831 existing_address->plugin, existing_address->addr,
832 existing_address->addr_len, existing_address->session_id,
833 existing_address->atsi, existing_address->atsi_count,
834 existing_address->assigned_bw_out, existing_address->assigned_bw_in);
836 for (c1 = 0; c1 < atsi_delta_count; c1++)
838 if ((GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
839 && (addr_net != ntohl (atsi_delta[c1].value)))
841 /* Network type changed */
842 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
843 "Address for peer `%s' %p changed from network %s to %s\n",
844 GNUNET_i2s (peer), existing_address,
845 GNUNET_ATS_print_network_type (addr_net),
846 GNUNET_ATS_print_network_type (ntohl (atsi_delta[c1].value)));
847 handle->env.sf.s_address_update_network (handle->solver, existing_address,
848 ntohl (atsi_delta[c1].value),
849 get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE));
850 addr_net = get_performance_info (existing_address,
851 GNUNET_ATS_NETWORK_TYPE);
854 /* Notify solver about update with atsi information and session */
855 handle->env.sf.s_bulk_start (handle->solver);
856 GAS_normalization_normalize_property (handle->addresses, existing_address,
858 handle->env.sf.s_bulk_stop (handle->solver);
860 GNUNET_free_non_null(atsi_delta);
862 /* Notify solver about new session */
863 if (existing_address->session_id == session_id)
864 return; /* possible, can both be 0 since address is revalidated */
866 previous_session = existing_address->session_id;
867 existing_address->session_id = session_id;
868 handle->env.sf.s_address_update_session (handle->solver, existing_address,
869 previous_session, session_id);
871 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
872 "Updated existing address for peer `%s' %p length %u with new session %u in network %s\n",
873 GNUNET_i2s (peer), existing_address, existing_address->addr_len,
874 session_id, GNUNET_ATS_print_network_type (addr_net));
878 * Update an address with a session or performance information for a peer.
880 * If an address was added without a session it will be updated with the
883 * @param handle the address handle to use
885 * @param plugin_name transport plugin name
886 * @param plugin_addr plugin address
887 * @param plugin_addr_len length of the plugin address
888 * @param session_id session id, can be 0
889 * @param atsi performance information for this address
890 * @param atsi_count number of performance information contained
893 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
894 const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
895 const void *plugin_addr, size_t plugin_addr_len, uint32_t session_id,
896 const struct GNUNET_ATS_Information *atsi, uint32_t atsi_count)
898 struct ATS_Address *aa;
899 struct GNUNET_ATS_Information *atsi_delta;
900 uint32_t atsi_delta_count;
901 uint32_t prev_session;
904 if (GNUNET_NO == handle->running)
907 GNUNET_assert(NULL != handle->addresses);
909 /* Get existing address */
910 aa = find_exact_address (handle, peer, plugin_name, plugin_addr,
911 plugin_addr_len, session_id);
914 if (NULL == aa->solver_information)
917 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s' address \n",
918 "ADDRESS UPDATE", GNUNET_i2s (peer), aa);
921 aa->t_last_activity = GNUNET_TIME_absolute_get();
922 if (session_id != aa->session_id)
924 /* Session changed */
925 prev_session = aa->session_id;
926 aa->session_id = session_id;
927 handle->env.sf.s_address_update_session (handle->solver, aa, prev_session,
932 atsi_delta_count = 0;
934 == disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta,
937 /* ATS properties changed */
938 for (c1 = 0; c1 < atsi_delta_count; c1++)
940 if (GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
942 /* Network type changed */
943 handle->env.sf.s_address_update_network (handle->solver, aa,
944 ntohl (atsi_delta[c1].value),
945 get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE));
949 /* Notify performance clients about updated address */
950 GAS_performance_notify_all_clients (&aa->peer, aa->plugin, aa->addr,
951 aa->addr_len, aa->session_id, aa->atsi, aa->atsi_count,
952 aa->assigned_bw_out, aa->assigned_bw_in);
954 handle->env.sf.s_bulk_start (handle->solver);
955 GAS_normalization_normalize_property (handle->addresses, aa, atsi,
957 handle->env.sf.s_bulk_stop (handle->solver);
959 GNUNET_free_non_null(atsi_delta);
962 struct DestroyContext
964 struct ATS_Address *aa;
966 struct GAS_Addresses_Handle *handle;
969 * GNUNET_NO : full address
970 * GNUNET_YES : just session
978 * If session != 0, just the session is deleted, the address itself still exists
979 * If session == 0, remove full address
980 * If session == 0 and addrlen == 0, destroy inbound address
984 * @param value the 'struct ATS_Address'
985 * @return GNUNET_OK (continue to iterate)
988 destroy_by_session_id (void *cls,
989 const struct GNUNET_PeerIdentity *key,
992 struct DestroyContext *dc = cls;
993 struct GAS_Addresses_Handle *handle = dc->handle;
994 const struct ATS_Address *des = dc->aa;
995 struct ATS_Address *aa = value;
998 0 == memcmp (&aa->peer, &des->peer, sizeof(struct GNUNET_PeerIdentity)));
1000 if (des->session_id == 0)
1002 /* Session == 0, remove full address */
1003 if ((0 == strcmp (des->plugin, aa->plugin))
1004 && (aa->addr_len == des->addr_len)
1005 && (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
1008 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1009 "Deleting full address for peer `%s' session %u %p\n",
1010 GNUNET_i2s (&aa->peer), aa->session_id, aa);
1012 /* Notify solver about deletion */
1014 GNUNET_YES == GNUNET_CONTAINER_multipeermap_remove (handle->addresses,
1017 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
1019 dc->result = GNUNET_NO;
1020 return GNUNET_OK; /* Continue iteration */
1025 /* Session != 0, just remove session */
1026 if (aa->session_id != des->session_id)
1027 return GNUNET_OK; /* irrelevant */
1029 if ((aa->session_id != 0) && (0 != strcmp (des->plugin, aa->plugin)))
1031 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1032 "Different plugins during removal: `%s' vs `%s' \n", des->plugin,
1038 if (aa->addr_len == 0)
1040 /* Inbound connection died, delete full address */
1041 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1042 "Deleting inbound address for peer `%s': `%s' session %u\n",
1043 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1045 /* Notify solver about deletion */
1047 GNUNET_YES == GNUNET_CONTAINER_multipeermap_remove (handle->addresses,
1049 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
1051 dc->result = GNUNET_NO;
1052 return GNUNET_OK; /* Continue iteration */
1057 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1058 "Deleting session for peer `%s': `%s' %u\n", GNUNET_i2s (&aa->peer),
1059 aa->plugin, aa->session_id);
1060 /* Notify solver to delete session */
1061 handle->env.sf.s_del (handle->solver, aa, GNUNET_YES);
1063 aa->active = GNUNET_NO;
1072 * Remove an address or just a session for a peer.
1074 * @param handle the address handle to use
1076 * @param plugin_name transport plugin name
1077 * @param plugin_addr plugin address
1078 * @param plugin_addr_len length of the plugin address
1079 * @param session_id session id, can be 0
1082 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1083 const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
1084 const void *plugin_addr, size_t plugin_addr_len, uint32_t session_id)
1086 struct ATS_Address *ea;
1087 struct DestroyContext dc;
1088 if (GNUNET_NO == handle->running)
1091 /* Get existing address */
1092 ea = find_exact_address (handle, peer, plugin_name, plugin_addr,
1093 plugin_addr_len, session_id);
1096 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1097 "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1098 GNUNET_i2s (peer), plugin_name, session_id);
1102 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1103 "Received `%s' for peer `%s' address %p session %u\n", "ADDRESS DESTROY",
1104 GNUNET_i2s (peer), ea, session_id);
1106 GNUNET_break(0 < strlen (plugin_name));
1108 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
1111 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1113 &destroy_by_session_id, &dc);
1114 GNUNET_STATISTICS_set (handle->stat, "# addresses",
1115 GNUNET_CONTAINER_multipeermap_size (handle->addresses), GNUNET_NO);
1116 free_address (dc.aa);
1120 * Notification about active use of an address.
1121 * in_use == GNUNET_YES:
1122 * This address is used to maintain an active connection with a peer.
1123 * in_use == GNUNET_NO:
1124 * This address is no longer used to maintain an active connection with a peer.
1126 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1129 * @param handle the address handle to use
1131 * @param plugin_name transport plugin name
1132 * @param plugin_addr plugin address
1133 * @param plugin_addr_len length of the plugin address
1134 * @param session_id session id, can be 0
1135 * @param in_use GNUNET_YES if GNUNET_NO
1136 * @return GNUNET_SYSERR on failure (address unknown ...)
1139 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1140 const struct GNUNET_PeerIdentity *peer, const char *plugin_name,
1141 const void *plugin_addr, size_t plugin_addr_len, uint32_t session_id,
1144 struct ATS_Address *ea;
1145 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1146 "ADDRESS IN USE", GNUNET_i2s (peer));
1148 if (GNUNET_NO == handle->running)
1149 return GNUNET_SYSERR;
1151 ea = find_exact_address (handle, peer, plugin_name, plugin_addr,
1152 plugin_addr_len, session_id);
1155 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1156 "Trying to set unknown address `%s' `%s' `%u' to %s \n",
1157 GNUNET_i2s (peer), plugin_name, session_id,
1158 (GNUNET_NO == in_use) ? "NO" : "YES");
1160 return GNUNET_SYSERR;
1162 if (ea->used == in_use)
1165 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1166 "Address in use called multiple times for peer `%s': %s -> %s \n",
1167 GNUNET_i2s (peer), (GNUNET_NO == ea->used) ? "NO" : "YES",
1168 (GNUNET_NO == in_use) ? "NO" : "YES");
1169 return GNUNET_SYSERR;
1172 /* Tell solver about update */
1174 ea->t_last_activity = GNUNET_TIME_absolute_get();
1175 handle->env.sf.s_address_update_inuse (handle->solver, ea, ea->used);
1180 * Cancel address suggestions for a peer
1182 * @param handle the address handle
1183 * @param peer the peer id
1186 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1187 const struct GNUNET_PeerIdentity *peer)
1189 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1191 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received request: `%s' for peer %s\n",
1192 "request_address_cancel", GNUNET_i2s (peer));
1196 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1203 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1204 "No address requests pending for peer `%s', cannot remove!\n",
1208 handle->env.sf.s_get_stop (handle->solver, peer);
1209 GAS_addresses_handle_backoff_reset (handle, peer);
1210 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Removed request pending for peer `%s\n",
1212 GNUNET_CONTAINER_DLL_remove(handle->pending_requests_head, handle->pending_requests_tail, cur);
1218 * Request address suggestions for a peer
1220 * @param handle the address handle
1221 * @param peer the peer id
1224 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1225 const struct GNUNET_PeerIdentity *peer)
1227 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1228 struct ATS_Address *aa;
1230 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1231 "REQUEST ADDRESS", GNUNET_i2s (peer));
1233 if (GNUNET_NO == handle->running)
1237 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1238 break; /* already suggesting */
1243 cur = GNUNET_new (struct GAS_Addresses_Suggestion_Requests);
1245 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1246 "Adding new address suggestion request for `%s'\n",
1248 GNUNET_CONTAINER_DLL_insert(handle->pending_requests_head, handle->pending_requests_tail, cur);
1251 /* Get prefered address from solver */
1252 aa = (struct ATS_Address *) handle->env.sf.s_get (handle->solver, peer);
1255 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Cannot suggest address for peer `%s'\n",
1260 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Suggesting address %p for peer `%s'\n",
1261 aa, GNUNET_i2s (peer));
1263 GAS_scheduling_transmit_address_suggestion (peer, aa->plugin, aa->addr,
1264 aa->addr_len, aa->session_id, aa->atsi, aa->atsi_count,
1265 aa->assigned_bw_out, aa->assigned_bw_in);
1267 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval,
1268 ATS_BLOCKING_DELTA);
1269 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
1270 aa->block_interval);
1272 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1273 "Address %p ready for suggestion, block interval now %llu \n", aa,
1274 aa->block_interval);
1278 * Iterator to reset address blocking
1280 * @param cls not used
1281 * @param key the peer
1282 * @param value the address to reset
1283 * @return #GNUNET_OK to continue
1286 reset_address_it (void *cls,
1287 const struct GNUNET_PeerIdentity *key,
1290 struct ATS_Address *aa = value;
1292 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1293 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1294 GNUNET_i2s (&aa->peer),
1296 aa->block_interval);
1297 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1298 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1304 * Reset suggestion backoff for a peer
1306 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1307 * reset using this function
1309 * @param handle the address handle
1310 * @param peer the peer id
1313 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1314 const struct GNUNET_PeerIdentity *peer)
1316 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1317 "RESET BACKOFF", GNUNET_i2s (peer));
1320 GNUNET_SYSERR != GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1322 &reset_address_it, NULL));
1327 eval_count_active_it (void *cls,
1328 const struct GNUNET_PeerIdentity *id,
1331 int *request_fulfilled = cls;
1332 struct ATS_Address *addr = obj;
1334 if (GNUNET_YES == addr->active)
1335 (*request_fulfilled) = GNUNET_YES;
1337 if (*request_fulfilled == GNUNET_YES)
1347 struct SummaryContext
1350 * Sum of the utilized inbound bandwidth per network
1352 unsigned long long bandwidth_in_assigned[GNUNET_ATS_NetworkTypeCount];
1355 * Sum of the utilized outbound bandwidth per network
1357 unsigned long long bandwidth_out_assigned[GNUNET_ATS_NetworkTypeCount];
1360 * Sum addresses within a network
1362 unsigned int addresses_in_network[GNUNET_ATS_NetworkTypeCount];
1367 eval_sum_bw_used (void *cls, const struct GNUNET_PeerIdentity *id, void *obj)
1369 struct SummaryContext *ctx = cls;
1370 struct ATS_Address *addr = obj;
1371 int networks[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1375 if (GNUNET_YES == addr->active)
1377 net = get_performance_info (addr, GNUNET_ATS_NETWORK_TYPE);
1378 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1380 if (net == networks[c])
1382 ctx->addresses_in_network[c] ++;
1383 ctx->bandwidth_in_assigned[c] += ntohl (addr->assigned_bw_in.value__);
1384 ctx->bandwidth_out_assigned[c] += ntohl (addr->assigned_bw_out.value__);
1387 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1388 "Active address in %s with (in/out) %u/%u Bps\n",
1389 GNUNET_ATS_print_network_type (net),
1390 (unsigned int) ntohl (addr->assigned_bw_in.value__),
1391 (unsigned int) ntohl (addr->assigned_bw_out.value__));
1400 struct RelativityContext
1403 struct GAS_Addresses_Handle *ah;
1408 find_active_address (void *cls, const struct GNUNET_PeerIdentity *id, void *obj)
1410 struct ATS_Address **res = cls;
1411 struct ATS_Address *addr = obj;
1413 if (GNUNET_YES == addr->active)
1423 * Evaluate current bandwidth assignment
1425 * @param ah address handle
1428 GAS_addresses_evaluate_assignment (struct GAS_Addresses_Handle *ah)
1430 struct GAS_Addresses_Suggestion_Requests *cur;
1431 struct GAS_Addresses_Preference_Clients *pcur;
1434 float quality_requests_fulfilled = 0.0;
1435 float quality_bandwidth_utilization[GNUNET_ATS_NetworkTypeCount];
1436 float quality_bandwidth_utilization_total = 0.0;
1437 float quality_application_requirements = 0.0;
1440 int include_requests;
1441 int include_utilization;
1442 int include_requirements;
1444 /* Variable related to requests */
1445 unsigned int requests_pending;
1446 unsigned int requests_fulfilled;
1447 unsigned int request_active;
1449 /* Variable related to utilization */
1450 struct SummaryContext sum;
1451 struct ATS_Address *active_address;
1454 /* Variables for preferences */
1455 int prefs[GNUNET_ATS_PreferenceCount] = GNUNET_ATS_PreferenceType;
1458 const double *norm_values;
1459 double prefs_fulfill[GNUNET_ATS_PreferenceCount];
1460 int prefs_clients[GNUNET_ATS_PreferenceCount];
1463 GNUNET_assert (NULL != ah);
1464 GNUNET_assert (NULL != ah->addresses);
1466 requests_pending = 0;
1467 requests_fulfilled = 0;
1468 /* 1) How many requests could be fulfilled? */
1469 for (cur = ah->pending_requests_head; NULL != cur; cur = cur->next)
1471 request_active = GNUNET_NO;
1472 GNUNET_CONTAINER_multipeermap_get_multiple (ah->addresses,
1473 &cur->id, &eval_count_active_it, &request_active);
1474 if (GNUNET_YES == request_active)
1475 requests_fulfilled ++;
1476 requests_pending ++;
1477 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer `%s': %u pending requests, %s\n",
1478 GNUNET_i2s (&cur->id),
1480 (GNUNET_YES == request_active) ? "active adress" : "no active address");
1483 if (requests_pending > 0)
1485 quality_requests_fulfilled = (float) requests_fulfilled / requests_pending;
1486 include_requests = GNUNET_YES;
1490 quality_requests_fulfilled = 0.0;
1491 include_requests = GNUNET_NO;
1493 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%u pending requests, %u requests fullfilled\n",
1494 requests_pending, requests_fulfilled);
1496 /* 2) How well is bandwidth utilized? */
1498 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1500 quality_bandwidth_utilization[c] = 0.0;
1501 sum.addresses_in_network[c] = 0;
1502 sum.bandwidth_in_assigned[c] = 0;
1503 sum.bandwidth_out_assigned[c] = 0;
1505 GNUNET_CONTAINER_multipeermap_iterate(ah->addresses,
1506 &eval_sum_bw_used, &sum);
1507 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1509 quality_bandwidth_utilization[c] = (((float)sum.bandwidth_out_assigned[c] / ah->env.out_quota[c]) +
1510 ((float)sum.bandwidth_in_assigned[c] / ah->env.in_quota[c])) / 2;
1512 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Utilization for network `%s': %f\n",
1513 GNUNET_ATS_print_network_type(ah->env.networks[c]),
1514 quality_bandwidth_utilization[c]);
1515 if (sum.addresses_in_network[c] > 0)
1517 quality_bandwidth_utilization_total += quality_bandwidth_utilization[c];
1521 if (0 < network_count)
1523 quality_bandwidth_utilization_total /= network_count;
1524 include_utilization = GNUNET_YES;
1528 quality_bandwidth_utilization_total = 0.0;
1529 include_utilization = GNUNET_NO;
1532 /* 3) How well does selection match application requirements */
1533 if (0 == ah->pref_clients)
1535 include_requirements = 0;
1539 for (c = 0; c < GNUNET_ATS_PreferenceCount; c++)
1541 prefs_fulfill[c] = 0.0;
1542 prefs_clients[c] = 0;
1545 for (cur = ah->pending_requests_head; NULL != cur; cur = cur->next)
1547 active_address = NULL;
1548 GNUNET_CONTAINER_multipeermap_get_multiple (ah->addresses,
1549 &cur->id, &find_active_address, &active_address);
1551 for (pcur = ah->preference_clients_head; NULL != pcur; pcur = pcur->next)
1553 for (c = 0; c < GNUNET_ATS_PreferenceCount; c++)
1555 if (prefs[c] == GNUNET_ATS_PREFERENCE_END)
1557 pref_val = GAS_normalization_get_preferences_by_client (pcur->client, &cur->id, prefs[c]);
1558 if (-1.0 == pref_val)
1564 if (DEFAULT_REL_PREFERENCE == pref_val)
1566 /* Default preference value */
1570 if (NULL != active_address)
1572 norm_values = GAS_normalization_get_properties (active_address);
1573 prop_val = norm_values[c];
1574 if ((norm_values[c] <= 1.0) || (norm_values[c] >= 2.0))
1575 prop_val = DEFAULT_REL_QUALITY;
1579 prop_val = DEFAULT_REL_QUALITY;
1582 /* We now have preference values [1..2] and properties [1..2] */
1584 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%u Client %p, Peer %s Property %s: pref: %.3f prop %.3f \n",
1587 GNUNET_i2s (&cur->id),
1588 GNUNET_ATS_print_preference_type(prefs[c]),
1592 prefs_fulfill[c] += (pref_val * prop_val) / 2;
1593 prefs_clients[c] ++;
1598 for (c = 0; c < GNUNET_ATS_PreferenceCount; c++)
1600 if (0 < prefs_clients[c])
1602 prefs_fulfill[c] /= prefs_clients[c];
1604 quality_application_requirements += prefs_fulfill[c];
1608 quality_application_requirements /= rels;
1610 quality_application_requirements = 0.0;
1612 include_requirements = 1;
1616 if (include_requests + include_utilization + include_requirements > 0)
1617 guq = (quality_requests_fulfilled + quality_bandwidth_utilization_total + quality_application_requirements) /
1618 (include_requests + include_utilization + include_requirements);
1622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1623 "Requests fulfilled %.3f bandwidth utilized %.3f application preferences met %.3f => %.3f\n",
1624 quality_requests_fulfilled,
1625 quality_bandwidth_utilization_total,
1626 quality_application_requirements,
1631 * Solver information callback
1633 * @param cls the closure
1634 * @param op the operation
1635 * @param stat operation status
1636 * @param add additional information
1640 solver_info_cb (void *cls,
1641 enum GAS_Solver_Operation op,
1642 enum GAS_Solver_Status stat,
1643 enum GAS_Solver_Additional_Information add)
1649 add_info = "GAS_INFO_NONE";
1652 add_info = "GAS_INFO_MLP_FULL";
1654 case GAS_INFO_UPDATED:
1655 add_info = "GAS_INFO_MLP_UPDATED";
1657 case GAS_INFO_PROP_ALL:
1658 add_info = "GAS_INFO_PROP_ALL";
1660 case GAS_INFO_PROP_SINGLE:
1661 add_info = "GAS_INFO_PROP_SINGLE";
1664 add_info = "INVALID";
1669 case GAS_OP_SOLVE_START:
1670 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1671 "Solver notifies `%s' with result `%s' `%s'\n", "GAS_OP_SOLVE_START",
1672 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1674 case GAS_OP_SOLVE_STOP:
1675 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1676 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_STOP",
1677 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1680 case GAS_OP_SOLVE_SETUP_START:
1681 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1682 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_START",
1683 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1686 case GAS_OP_SOLVE_SETUP_STOP:
1687 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1688 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_STOP",
1689 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1692 case GAS_OP_SOLVE_MLP_LP_START:
1693 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1694 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_START",
1695 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1697 case GAS_OP_SOLVE_MLP_LP_STOP:
1698 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1699 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_STOP",
1700 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1703 case GAS_OP_SOLVE_MLP_MLP_START:
1704 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1705 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_START",
1706 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1708 case GAS_OP_SOLVE_MLP_MLP_STOP:
1709 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1710 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_STOP",
1711 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1713 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_START:
1714 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1715 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_START",
1716 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1718 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP:
1719 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1720 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP",
1721 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1722 GAS_addresses_evaluate_assignment (cls);
1731 * The preference changed for a peer
1733 * @param cls the address handle
1734 * @param peer the peer
1735 * @param kind the ATS kind
1736 * @param pref_rel the new relative preference value
1739 normalized_preference_changed_cb (void *cls,
1740 const struct GNUNET_PeerIdentity *peer, enum GNUNET_ATS_PreferenceKind kind,
1743 GNUNET_assert(NULL != cls);
1744 struct GAS_Addresses_Handle *handle = cls;
1746 /* Tell solver about update */
1747 handle->env.sf.s_pref (handle->solver, peer, kind, pref_rel);
1751 * The relative value for a property changed
1753 * @param cls the address handle
1754 * @param address the peer
1755 * @param type the ATS type
1756 * @param prop_rel the new relative preference value
1759 normalized_property_changed_cb (void *cls, struct ATS_Address *address,
1760 uint32_t type, double prop_rel)
1762 struct GAS_Addresses_Handle *ah = (struct GAS_Addresses_Handle *) cls;
1763 GNUNET_assert(NULL != ah);
1765 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1766 "Normalized property %s for peer `%s' changed to %.3f \n",
1767 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1770 ah->env.sf.s_address_update_property (ah->solver, address, type, 0, prop_rel);
1773 static struct GAS_Addresses_Preference_Clients *
1774 find_preference_client (struct GAS_Addresses_Handle *handle, void *client)
1776 struct GAS_Addresses_Preference_Clients *cur;
1778 for (cur = handle->preference_clients_head; NULL != cur; cur = cur->next)
1780 if (cur->client == client)
1787 * A performance client disconnected
1789 * @param handle address handle
1790 * @param client the client
1794 GAS_addresses_preference_client_disconnect (struct GAS_Addresses_Handle *handle,
1797 struct GAS_Addresses_Preference_Clients * pc;
1798 if (NULL != (pc = find_preference_client (handle, client)))
1800 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
1801 handle->preference_clients_tail, pc);
1803 GNUNET_assert (handle->pref_clients > 0);
1804 handle->pref_clients --;
1805 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
1807 GAS_normalization_preference_client_disconnect (client);
1811 * Change the preference for a peer
1813 * @param handle the address handle
1814 * @param client the client sending this request
1815 * @param peer the peer id
1816 * @param kind the preference kind to change
1817 * @param score_abs the new preference score
1820 GAS_addresses_preference_change (struct GAS_Addresses_Handle *handle,
1821 void *client, const struct GNUNET_PeerIdentity *peer,
1822 enum GNUNET_ATS_PreferenceKind kind, float score_abs)
1824 struct GAS_Addresses_Preference_Clients * pc;
1825 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1826 "Received `%s' for peer `%s' for client %p\n", "CHANGE PREFERENCE",
1827 GNUNET_i2s (peer), client);
1829 if (GNUNET_NO == handle->running)
1833 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1836 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1837 "Received `%s' for unknown peer `%s' from client %p\n",
1838 "CHANGE PREFERENCE", GNUNET_i2s (peer), client);
1842 if (NULL == find_preference_client (handle, client))
1844 pc = GNUNET_new (struct GAS_Addresses_Preference_Clients);
1845 pc->client = client;
1846 GNUNET_CONTAINER_DLL_insert (handle->preference_clients_head,
1847 handle->preference_clients_tail, pc);
1848 handle->pref_clients ++;
1849 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
1852 handle->env.sf.s_bulk_start (handle->solver);
1853 /* Tell normalization about change, normalization will call callback if preference changed */
1854 GAS_normalization_normalize_preference (client, peer, kind, score_abs);
1855 handle->env.sf.s_bulk_stop (handle->solver);
1859 * Change the preference for a peer
1861 * @param handle the address handle
1862 * @param application the client sending this request
1863 * @param peer the peer id
1864 * @param scope the time interval for this feedback: [now - scope .. now]
1865 * @param kind the preference kind to change
1866 * @param score_abs the new preference score
1869 GAS_addresses_preference_feedback (struct GAS_Addresses_Handle *handle,
1870 void *application, const struct GNUNET_PeerIdentity *peer,
1871 const struct GNUNET_TIME_Relative scope,
1872 enum GNUNET_ATS_PreferenceKind kind, float score_abs)
1874 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1875 "Received `%s' for peer `%s' for client %p\n", "PREFERENCE FEEDBACK",
1876 GNUNET_i2s (peer), application);
1878 if (GNUNET_NO == handle->running)
1882 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1885 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1886 "Received `%s' for unknown peer `%s' from client %p\n",
1887 "PREFERENCE FEEDBACK", GNUNET_i2s (peer), application);
1891 handle->env.sf.s_feedback (handle->solver, application, peer, scope, kind,
1896 * Load quotas for networks from configuration
1898 * @param cfg configuration handle
1899 * @param out_dest where to write outbound quotas
1900 * @param in_dest where to write inbound quotas
1901 * @param dest_length length of inbound and outbound arrays
1902 * @return number of networks loaded
1905 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg,
1906 unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1908 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1909 char * entry_in = NULL;
1910 char * entry_out = NULL;
1911 char * quota_out_str;
1912 char * quota_in_str;
1916 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1920 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1921 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1925 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_out,
1929 if (0 == strcmp (quota_out_str, GNUNET_ATS_MaxBandwidthString))
1931 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1934 if ((GNUNET_NO == res)
1936 == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str,
1939 if ((GNUNET_NO == res)
1941 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out,
1945 if (GNUNET_NO == res)
1947 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1948 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1949 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1950 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1954 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1955 _("Outbound quota configure for network `%s' is %llu\n"),
1956 network_str[c], out_dest[c]);
1958 GNUNET_free(quota_out_str);
1962 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1963 _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1964 network_str[c], GNUNET_ATS_DefaultBandwidth);
1965 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1970 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_in,
1974 if (0 == strcmp (quota_in_str, GNUNET_ATS_MaxBandwidthString))
1976 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1979 if ((GNUNET_NO == res)
1981 == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1983 if ((GNUNET_NO == res)
1985 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in,
1989 if (GNUNET_NO == res)
1991 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1992 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1993 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
1994 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1998 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1999 _("Inbound quota configured for network `%s' is %llu\n"),
2000 network_str[c], in_dest[c]);
2002 GNUNET_free(quota_in_str);
2006 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
2007 _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
2008 network_str[c], GNUNET_ATS_DefaultBandwidth);
2009 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
2011 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
2012 "Loaded quota for network `%s' (in/out): %llu %llu\n", network_str[c],
2013 in_dest[c], out_dest[c]);
2014 GNUNET_free(entry_out);
2015 GNUNET_free(entry_in);
2017 return GNUNET_ATS_NetworkTypeCount;
2021 * Callback for solver to notify about assignment changes
2023 * @param cls the GAS_Addresses_Handle
2024 * @param address the address with changes
2027 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
2029 struct GAS_Addresses_Handle *handle = cls;
2030 struct GAS_Addresses_Suggestion_Requests *cur;
2032 GNUNET_assert(handle != NULL);
2033 GNUNET_assert(address != NULL);
2035 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
2036 "Bandwidth assignment changed for peer %s \n",
2037 GNUNET_i2s (&address->peer));
2039 /* Notify performance clients about changes to address */
2040 GAS_performance_notify_all_clients (&address->peer, address->plugin,
2041 address->addr, address->addr_len, address->session_id, address->atsi,
2042 address->atsi_count, address->assigned_bw_out, address->assigned_bw_in);
2043 cur = handle->pending_requests_head;
2046 if (0 == memcmp (&address->peer, &cur->id, sizeof(cur->id)))
2047 break; /* we have an address request pending*/
2052 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
2053 "Nobody is interested in peer `%s' :(\n",
2054 GNUNET_i2s (&address->peer));
2058 if ((0 == ntohl (address->assigned_bw_in.value__))
2059 && (0 == ntohl (address->assigned_bw_out.value__)))
2061 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2062 "Telling transport to disconnect peer `%s'\n",
2063 GNUNET_i2s (&address->peer));
2067 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
2068 "Sending bandwidth update for peer `%s': %u %u\n",
2069 GNUNET_i2s (&address->peer),
2070 (unsigned int) ntohl (address->assigned_bw_out.value__),
2071 (unsigned int) ntohl (address->assigned_bw_out.value__));
2074 /* *Notify scheduling clients about suggestion */
2075 GAS_scheduling_transmit_address_suggestion (&address->peer, address->plugin,
2076 address->addr, address->addr_len, address->session_id, address->atsi,
2077 address->atsi_count, address->assigned_bw_out, address->assigned_bw_in);
2082 * Initialize address subsystem. The addresses subsystem manages the addresses
2083 * known and current performance information. It has a solver component
2084 * responsible for the resource allocation. It tells the solver about changes
2085 * and receives updates when the solver changes the resource allocation.
2087 * @param cfg configuration to use
2088 * @param stats the statistics handle to use
2089 * @return an address handle
2091 struct GAS_Addresses_Handle *
2092 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
2093 const struct GNUNET_STATISTICS_Handle *stats)
2095 struct GAS_Addresses_Handle *ah;
2096 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
2097 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
2102 ah = GNUNET_new (struct GAS_Addresses_Handle);
2103 ah->running = GNUNET_NO;
2105 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
2106 /* Initialize the addresses database */
2107 ah->addresses = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
2108 ah->pref_clients = 0;
2109 GNUNET_assert(NULL != ah->addresses);
2111 /* Figure out configured solution method */
2113 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
2115 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
2116 "No resource assignment method configured, using proportional approach\n");
2117 ah->ats_mode = MODE_PROPORTIONAL;
2121 for (c = 0; c < strlen (mode_str); c++)
2122 mode_str[c] = toupper (mode_str[c]);
2123 if (0 == strcmp (mode_str, "PROPORTIONAL"))
2124 ah->ats_mode = MODE_PROPORTIONAL;
2125 else if (0 == strcmp (mode_str, "MLP"))
2127 ah->ats_mode = MODE_MLP;
2129 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
2130 "Assignment method `%s' configured, but GLPK is not available, please install \n",
2132 ah->ats_mode = MODE_PROPORTIONAL;
2135 else if (0 == strcmp (mode_str, "RIL"))
2136 ah->ats_mode = MODE_RIL;
2139 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
2140 "Invalid resource assignment method `%s' configured, using proportional approach\n",
2142 ah->ats_mode = MODE_PROPORTIONAL;
2144 GNUNET_free(mode_str);
2147 load_quotas (cfg, quotas_out, quotas_in, GNUNET_ATS_NetworkTypeCount);
2148 ah->env.info_cb = &solver_info_cb;
2149 ah->env.info_cb_cls = ah;
2150 ah->env.bandwidth_changed_cb = &bandwidth_changed_cb;
2151 ah->env.bw_changed_cb_cls = ah;
2152 ah->env.get_preferences = &get_preferences_cb;
2153 ah->env.get_preference_cls = ah;
2154 ah->env.get_property = &get_property_cb;
2155 ah->env.get_property_cls = ah;
2157 ah->env.stats = stats;
2158 ah->env.addresses = ah->addresses;
2160 ah->env.network_count = GNUNET_ATS_NetworkTypeCount;
2161 int networks[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
2162 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
2164 ah->env.networks[c] = networks[c];
2165 ah->env.out_quota[c] = quotas_out[c];
2166 ah->env.in_quota[c] = quotas_in[c];
2169 switch (ah->ats_mode) {
2170 case MODE_PROPORTIONAL:
2171 plugin_short = "proportional";
2174 plugin_short = "mlp";
2177 plugin_short = "ril";
2180 plugin_short = NULL;
2183 GNUNET_asprintf (&ah->plugin, "libgnunet_plugin_ats_%s", plugin_short);
2184 GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Initializing solver `%s '`%s'\n"), plugin_short, ah->plugin);
2185 if (NULL == (ah->solver = GNUNET_PLUGIN_load (ah->plugin, &ah->env)))
2187 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Failed to initialize solver `%s'!\n"), ah->plugin);
2191 GNUNET_assert (NULL != ah->env.sf.s_add);
2192 GNUNET_assert (NULL != ah->env.sf.s_address_update_inuse);
2193 GNUNET_assert (NULL != ah->env.sf.s_address_update_property);
2194 GNUNET_assert (NULL != ah->env.sf.s_address_update_session);
2195 GNUNET_assert (NULL != ah->env.sf.s_address_update_network);
2196 GNUNET_assert (NULL != ah->env.sf.s_get);
2197 GNUNET_assert (NULL != ah->env.sf.s_get_stop);
2198 GNUNET_assert (NULL != ah->env.sf.s_pref);
2199 GNUNET_assert (NULL != ah->env.sf.s_feedback);
2200 GNUNET_assert (NULL != ah->env.sf.s_del);
2201 GNUNET_assert (NULL != ah->env.sf.s_bulk_start);
2202 GNUNET_assert (NULL != ah->env.sf.s_bulk_stop);
2205 GAS_normalization_start (&normalized_preference_changed_cb, ah,
2206 &normalized_property_changed_cb, ah);
2208 if (NULL == ah->solver)
2210 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Failed to initialize solver!\n"));
2214 /* up and running */
2215 ah->running = GNUNET_YES;
2217 GNUNET_STATISTICS_set (ah->stat, "# addresses",
2218 GNUNET_CONTAINER_multipeermap_size (ah->addresses), GNUNET_NO);
2224 * Destroy all addresses iterator
2227 * @param key peer identity (unused)
2228 * @param value the 'struct ATS_Address' to free
2229 * @return #GNUNET_OK (continue to iterate)
2232 destroy_all_address_it (void *cls,
2233 const struct GNUNET_PeerIdentity *key,
2236 struct GAS_Addresses_Handle *handle = cls;
2237 struct ATS_Address *aa = value;
2240 GNUNET_assert(GNUNET_YES ==
2241 GNUNET_CONTAINER_multipeermap_remove (handle->addresses, key, value));
2243 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
2252 * Remove all addresses
2254 * @param handle the address handle to use
2257 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
2259 if (GNUNET_NO == handle->running)
2262 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Destroying all addresses\n");
2263 handle->env.sf.s_bulk_start (handle->solver);
2264 if (handle->addresses != NULL )
2265 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2266 &destroy_all_address_it,
2268 handle->env.sf.s_bulk_start (handle->solver);
2273 * Shutdown address subsystem.
2275 * @param handle the address handle to shutdown
2278 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
2280 struct GAS_Addresses_Suggestion_Requests *cur;
2281 struct GAS_Addresses_Preference_Clients *pcur;
2283 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Shutting down addresses\n");
2284 GNUNET_assert(NULL != handle);
2285 GAS_addresses_destroy_all (handle);
2286 handle->running = GNUNET_NO;
2287 GNUNET_CONTAINER_multipeermap_destroy (handle->addresses);
2288 handle->addresses = NULL;
2289 while (NULL != (cur = handle->pending_requests_head))
2291 GNUNET_CONTAINER_DLL_remove(handle->pending_requests_head, handle->pending_requests_tail, cur);
2295 while (NULL != (pcur = handle->preference_clients_head))
2297 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
2298 handle->preference_clients_tail, pcur);
2299 GNUNET_assert (handle->pref_clients > 0);
2300 handle->pref_clients --;
2301 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
2305 GNUNET_PLUGIN_unload (handle->plugin, handle->solver);
2306 GNUNET_free (handle->plugin);
2307 GNUNET_free(handle);
2308 /* Stop configured solution method */
2309 GAS_normalization_stop ();
2313 struct PeerIteratorContext
2315 GNUNET_ATS_Peer_Iterator it;
2317 struct GNUNET_CONTAINER_MultiPeerMap *peers_returned;
2322 * Iterator to iterate over all peers
2324 * @param cls a PeerIteratorContext
2325 * @param key the peer id
2326 * @param value the ATS_address
2327 * @return #GNUNET_OK to continue
2331 const struct GNUNET_PeerIdentity *key,
2334 struct PeerIteratorContext *ip_ctx = cls;
2337 GNUNET_CONTAINER_multipeermap_contains (ip_ctx->peers_returned, key))
2339 GNUNET_CONTAINER_multipeermap_put (ip_ctx->peers_returned, key, NULL,
2340 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2341 ip_ctx->it (ip_ctx->it_cls, key);
2348 * Return information all peers currently known to ATS
2350 * @param handle the address handle to use
2351 * @param p_it the iterator to call for every peer
2352 * @param p_it_cls the closure for the iterator
2355 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
2356 GNUNET_ATS_Peer_Iterator p_it, void *p_it_cls)
2358 struct PeerIteratorContext ip_ctx;
2363 GNUNET_assert(NULL != handle->addresses);
2365 size = GNUNET_CONTAINER_multipeermap_size (handle->addresses);
2369 ip_ctx.it_cls = p_it_cls;
2370 ip_ctx.peers_returned = GNUNET_CONTAINER_multipeermap_create (size,
2372 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2375 GNUNET_CONTAINER_multipeermap_destroy (ip_ctx.peers_returned);
2377 p_it (p_it_cls, NULL );
2380 struct PeerInfoIteratorContext
2382 GNUNET_ATS_PeerInfo_Iterator it;
2388 * Iterator to iterate over a peer's addresses
2390 * @param cls a `struct PeerInfoIteratorContext`
2391 * @param key the peer id
2392 * @param value the `struct ATS_address`
2393 * @return #GNUNET_OK to continue
2396 peerinfo_it (void *cls,
2397 const struct GNUNET_PeerIdentity *key,
2400 struct PeerInfoIteratorContext *pi_ctx = cls;
2401 struct ATS_Address *addr = value;
2403 if (NULL != pi_ctx->it)
2405 pi_ctx->it (pi_ctx->it_cls, &addr->peer, addr->plugin, addr->addr,
2406 addr->addr_len, addr->active, addr->atsi, addr->atsi_count,
2407 addr->assigned_bw_out, addr->assigned_bw_in);
2414 * Return information all peers currently known to ATS
2416 * @param handle the address handle to use
2417 * @param peer the respective peer
2418 * @param pi_it the iterator to call for every peer
2419 * @param pi_it_cls the closure for the iterator
2422 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
2423 const struct GNUNET_PeerIdentity *peer, GNUNET_ATS_PeerInfo_Iterator pi_it,
2426 struct PeerInfoIteratorContext pi_ctx;
2427 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
2429 GNUNET_assert(NULL != peer);
2430 GNUNET_assert(NULL != handle->addresses);
2432 return; /* does not make sense without callback */
2434 zero_bw = GNUNET_BANDWIDTH_value_init (0);
2436 pi_ctx.it_cls = pi_it_cls;
2438 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
2440 &peerinfo_it, &pi_ctx);
2443 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw,
2448 /* end of gnunet-service-ats_addresses.c */