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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 * Preference requests DLL head
321 struct GAS_Addresses_Preference_Clients *preference_clients_head;
324 * Preference requests DLL head
326 struct GAS_Addresses_Preference_Clients *preference_clients_tail;
331 struct GNUNET_ATS_PluginEnvironment env;
334 * Solver plugin name as string
341 * Value we pass for zero bandwidth.
343 const static struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
347 * Disassemble ATS information and update performance information in address
349 * Updates existing information and adds new information
351 * @param dest destination address
352 * @param update source ATS information
353 * @param update_count number of ATS information in @a update
354 * @param delta_dest ats performance information which were updated
355 * including previous value
356 * @param delta_count number of ATS information in the @a delta_dest
357 * @return #GNUNET_YES if address was address updated, GNUNET_NO otherwise
360 disassemble_ats_information (struct ATS_Address *dest,
361 const struct GNUNET_ATS_Information *update,
362 uint32_t update_count,
363 struct GNUNET_ATS_Information **delta_dest,
364 uint32_t *delta_count)
370 struct GNUNET_ATS_Information add_atsi[update_count];
371 struct GNUNET_ATS_Information delta_atsi[update_count];
372 struct GNUNET_ATS_Information *tmp_atsi;
373 uint32_t add_atsi_count;
374 uint32_t delta_atsi_count;
378 delta_atsi_count = 0;
380 if (0 == update_count)
383 if (NULL == dest->atsi)
385 /* Create performance information */
387 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
388 dest->atsi_count = update_count;
389 memcpy (dest->atsi, update,
390 update_count * sizeof(struct GNUNET_ATS_Information));
392 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
393 for (c1 = 0; c1 < update_count; c1++)
395 (*delta_dest)[c1].type = update[c1].type;
396 (*delta_dest)[c1].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
398 (*delta_count) = update_count;
402 for (c1 = 0; c1 < update_count; c1++)
404 /* Update existing performance information */
406 for (c2 = 0; c2 < dest->atsi_count; c2++)
408 if (update[c1].type == dest->atsi[c2].type)
410 if (update[c1].value != dest->atsi[c2].value)
412 /* Save previous value in delta */
413 delta_atsi[delta_atsi_count] = dest->atsi[c2];
416 dest->atsi[c2].value = update[c1].value;
423 if (GNUNET_NO == found)
425 add_atsi[add_atsi_count] = update[c1];
427 delta_atsi[delta_atsi_count].type = update[c1].type;
428 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
433 if (add_atsi_count > 0)
435 /* Extend ats performance information */
437 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
438 (sizeof (struct GNUNET_ATS_Information)));
439 memcpy (tmp_atsi, dest->atsi,
440 dest->atsi_count * sizeof(struct GNUNET_ATS_Information));
441 memcpy (&tmp_atsi[dest->atsi_count], add_atsi,
442 add_atsi_count * sizeof(struct GNUNET_ATS_Information));
443 GNUNET_free(dest->atsi);
444 dest->atsi = tmp_atsi;
445 dest->atsi_count = dest->atsi_count + add_atsi_count;
449 if (delta_atsi_count > 0)
453 GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
454 memcpy ((*delta_dest), delta_atsi,
455 delta_atsi_count * sizeof(struct GNUNET_ATS_Information));
456 (*delta_count) = delta_atsi_count;
464 * Free the given address
466 * @param addr address to destroy
469 free_address (struct ATS_Address *addr)
471 GNUNET_free(addr->plugin);
472 GNUNET_free_non_null(addr->atsi);
478 * Create a ATS_address with the given information
481 * @param plugin_name plugin
482 * @param plugin_addr address
483 * @param plugin_addr_len address length
484 * @param local_address_info additional local info for the address
485 * @param session_id session identifier, can never be 0
486 * @return the ATS_Address
488 static struct ATS_Address *
489 create_address (const struct GNUNET_PeerIdentity *peer,
490 const char *plugin_name,
491 const void *plugin_addr,
492 size_t plugin_addr_len,
493 uint32_t local_address_info,
496 struct ATS_Address *aa;
500 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
502 aa->addr_len = plugin_addr_len;
504 memcpy (&aa[1], plugin_addr, plugin_addr_len);
505 aa->plugin = GNUNET_strdup (plugin_name);
506 aa->session_id = session_id;
507 aa->local_address_info = local_address_info;
509 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1++)
511 aa->atsin[c1].avg_queue_index = 0;
512 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
513 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
520 * Closure for #compare_address_it()
522 struct CompareAddressContext
524 const struct ATS_Address *search;
526 /* exact_address != NULL if address and session is equal */
527 struct ATS_Address *exact_address;
528 /* exact_address != NULL if address and session is 0 */
529 struct ATS_Address *base_address;
536 * @param cls a CompareAddressContext containin the source address
538 * @param value the address to compare with
539 * @return #GNUNET_YES to continue, #GNUNET_NO if address is founce
542 compare_address_it (void *cls,
543 const struct GNUNET_PeerIdentity *key,
546 struct CompareAddressContext *cac = cls;
547 struct ATS_Address *aa = value;
549 /* Find an matching exact address:
552 * aa->addr_len == cac->search->addr_len
553 * aa->plugin == cac->search->plugin
554 * aa->addr == cac->search->addr
555 * aa->session == cac->search->session
557 * return as exact address
559 if ((aa->addr_len == cac->search->addr_len)
560 && (0 == strcmp (aa->plugin, cac->search->plugin)))
562 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len))
563 && (aa->session_id == cac->search->session_id))
564 cac->exact_address = aa;
567 /* Find an matching base address:
571 * aa->session_id == 0
574 * aa->addr_len == cac->search->addr_len
575 * aa->plugin == cac->search->plugin
576 * aa->addr == cac->search->addr
578 * return as base address
580 if ((aa->addr_len == cac->search->addr_len)
581 && (0 == strcmp (aa->plugin, cac->search->plugin)))
583 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len))
584 && (aa->session_id == 0))
585 cac->base_address = aa;
588 /* Find an matching exact address based on session:
592 * cac->search->addr_len == 0
595 * aa->plugin == cac->search->plugin
596 * aa->session_id == cac->search->session_id
598 * return as exact address
600 if (0 == cac->search->addr_len)
602 if ((0 == strcmp (aa->plugin, cac->search->plugin))
603 && (aa->session_id == cac->search->session_id))
604 cac->exact_address = aa;
607 if (cac->exact_address == NULL )
608 return GNUNET_YES; /* Continue iteration to find exact address */
610 return GNUNET_NO; /* Stop iteration since we have an exact address */
615 * Find an existing equivalent address record.
616 * Compares by peer identity and network address OR by session ID
617 * (one of the two must match).
619 * @param handle the address handle
620 * @param peer peer to lookup addresses for
621 * @param addr existing address record
622 * @return existing address record, NULL for none
625 find_equivalent_address (struct GAS_Addresses_Handle *handle,
626 const struct GNUNET_PeerIdentity *peer,
627 const struct ATS_Address *addr)
629 struct CompareAddressContext cac;
631 cac.exact_address = NULL;
632 cac.base_address = NULL;
634 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
636 &compare_address_it, &cac);
638 if (cac.exact_address == NULL)
639 return cac.base_address;
640 return cac.exact_address;
645 * Find the exact address
647 * @param handle the address handle to use
649 * @param plugin_name transport plugin name
650 * @param plugin_addr plugin address
651 * @param plugin_addr_len length of the plugin address
652 * @param local_address_info the local address for the address
653 * @param session_id session id, can never be 0
654 * @return an ATS_address or NULL
656 static struct ATS_Address *
657 find_exact_address (struct GAS_Addresses_Handle *handle,
658 const struct GNUNET_PeerIdentity *peer,
659 const char *plugin_name,
660 const void *plugin_addr,
661 size_t plugin_addr_len,
662 uint32_t local_address_info,
665 struct ATS_Address *aa;
666 struct ATS_Address *ea;
668 aa = create_address (peer,
675 /* Get existing address or address with session == 0 */
676 ea = find_equivalent_address (handle, peer, aa);
680 else if (ea->session_id != session_id)
687 * Function allowing the solver to obtain normalized preference
691 * @param id the peer to return the normalized properties for
692 * @return array of double values with |GNUNET_ATS_PreferenceCount| elements
695 get_preferences_cb (void *cls,
696 const struct GNUNET_PeerIdentity *id)
698 return GAS_normalization_get_preferences_by_peer (id);
703 * Function allowing the solver to obtain normalized property
704 * values for an address from solver
707 * @param address the address
708 * @return array of double values with |GNUNET_ATS_QualityPropertiesCount| elements
711 get_property_cb (void *cls, const struct ATS_Address *address)
713 return GAS_normalization_get_properties ((struct ATS_Address *) address);
718 * Extract an ATS performance info from an address
720 * @param address the address
721 * @param type the type to extract in HBO
722 * @return the value in HBO or #GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
725 get_performance_info (struct ATS_Address *address, uint32_t type)
728 GNUNET_assert(NULL != address);
730 if ((NULL == address->atsi) || (0 == address->atsi_count))
731 return GNUNET_ATS_VALUE_UNDEFINED;
733 for (c1 = 0; c1 < address->atsi_count; c1++)
735 if (ntohl (address->atsi[c1].type) == type)
736 return ntohl (address->atsi[c1].value);
738 return GNUNET_ATS_VALUE_UNDEFINED;
743 * Add a new address for a peer.
745 * @param handle the address handle to use
747 * @param plugin_name transport plugin name
748 * @param plugin_addr plugin address
749 * @param plugin_addr_len length of the plugin address in @a plugin_addr
750 * @param local_address_info the local address for the address
751 * @param session_id session id, can be 0
752 * @param atsi performance information for this address
753 * @param atsi_count number of performance information contained in @a atsi
756 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
757 const struct GNUNET_PeerIdentity *peer,
758 const char *plugin_name,
759 const void *plugin_addr,
760 size_t plugin_addr_len,
761 uint32_t local_address_info,
763 const struct GNUNET_ATS_Information *atsi,
766 struct ATS_Address *new_address;
767 struct ATS_Address *existing_address;
768 struct GNUNET_ATS_Information *atsi_delta;
769 uint32_t atsi_delta_count;
771 uint32_t previous_session;
774 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
775 "Received `%s' for peer `%s'\n",
779 if (GNUNET_NO == handle->running)
782 GNUNET_assert(NULL != handle->addresses);
784 new_address = create_address (peer, plugin_name,
785 plugin_addr, plugin_addr_len,
786 local_address_info, session_id);
788 disassemble_ats_information (new_address, atsi, atsi_count, &atsi_delta,
790 GNUNET_free_non_null (atsi_delta);
791 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
792 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
793 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
795 /* Get existing address or address with session == 0 */
796 existing_address = find_equivalent_address (handle, peer, new_address);
797 if (existing_address == NULL)
799 /* Add a new address */
800 new_address->t_added = GNUNET_TIME_absolute_get();
801 new_address->t_last_activity = GNUNET_TIME_absolute_get();
802 GNUNET_assert(GNUNET_OK ==
803 GNUNET_CONTAINER_multipeermap_put (handle->addresses,
806 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
808 GNUNET_STATISTICS_set (handle->stat,
810 GNUNET_CONTAINER_multipeermap_size (handle->addresses),
813 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
814 "Adding new address %p for peer `%s', length %u, session id %u, %s\n",
819 GNUNET_ATS_print_network_type (addr_net));
821 /* Tell solver about new address */
822 handle->env.sf.s_add (handle->solver, new_address, addr_net);
824 handle->env.sf.s_bulk_start (handle->solver);
825 GAS_normalization_normalize_property (handle->addresses,
829 handle->env.sf.s_bulk_stop (handle->solver);
831 /* Notify performance clients about new address */
832 GAS_performance_notify_all_clients (&new_address->peer, new_address->plugin,
833 new_address->addr, new_address->addr_len, new_address->active,
834 new_address->atsi, new_address->atsi_count,
835 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_out),
836 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_in));
840 /* We have an existing address we can use, clean up new */
841 GNUNET_free(new_address->plugin);
842 GNUNET_free_non_null(new_address->atsi);
843 GNUNET_free(new_address);
846 if (0 != existing_address->session_id)
848 /* Should not happen */
853 addr_net = get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE);
854 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
855 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
857 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
858 "Found existing address for peer `%s' %p with new session %u in network %s\n",
859 GNUNET_i2s (peer), existing_address, session_id,
860 GNUNET_ATS_print_network_type (addr_net));
861 /* We have an address without an session, update this address */
862 existing_address->t_added = GNUNET_TIME_absolute_get();
863 existing_address->t_last_activity = GNUNET_TIME_absolute_get();
865 atsi_delta_count = 0;
867 == disassemble_ats_information (existing_address, atsi, atsi_count,
868 &atsi_delta, &atsi_delta_count))
870 /* Notify performance clients about properties */
871 GAS_performance_notify_all_clients (&existing_address->peer,
872 existing_address->plugin, existing_address->addr,
873 existing_address->addr_len, existing_address->active,
874 existing_address->atsi, existing_address->atsi_count,
875 GNUNET_BANDWIDTH_value_init (existing_address->assigned_bw_out),
876 GNUNET_BANDWIDTH_value_init (existing_address->assigned_bw_in));
878 for (c1 = 0; c1 < atsi_delta_count; c1++)
880 if ((GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
881 && (addr_net != ntohl (atsi_delta[c1].value)))
883 /* Network type changed */
884 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
885 "Address for peer `%s' %p changed from network %s to %s\n",
886 GNUNET_i2s (peer), existing_address,
887 GNUNET_ATS_print_network_type (addr_net),
888 GNUNET_ATS_print_network_type (ntohl (atsi_delta[c1].value)));
889 handle->env.sf.s_address_update_network (handle->solver, existing_address,
890 ntohl (atsi_delta[c1].value),
891 get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE));
892 addr_net = get_performance_info (existing_address,
893 GNUNET_ATS_NETWORK_TYPE);
896 /* Notify solver about update with atsi information and session */
897 handle->env.sf.s_bulk_start (handle->solver);
898 GAS_normalization_normalize_property (handle->addresses, existing_address,
900 handle->env.sf.s_bulk_stop (handle->solver);
902 GNUNET_free_non_null(atsi_delta);
904 /* Notify solver about new session */
905 if (existing_address->session_id == session_id)
906 return; /* possible, can both be 0 since address is revalidated */
908 previous_session = existing_address->session_id;
909 existing_address->session_id = session_id;
910 handle->env.sf.s_address_update_session (handle->solver, existing_address,
911 previous_session, session_id);
913 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
914 "Updated existing address for peer `%s' %p length %u with new session %u in network %s\n",
915 GNUNET_i2s (peer), existing_address, existing_address->addr_len,
916 session_id, GNUNET_ATS_print_network_type (addr_net));
921 * Update an address with a session or performance information for a peer.
923 * If an address was added without a session it will be updated with the
926 * @param handle the address handle to use
928 * @param plugin_name transport plugin name
929 * @param plugin_addr plugin address
930 * @param plugin_addr_len length of the plugin address
931 * @param local_address_info the local address for the address
932 * @param session_id session id, can be 0
933 * @param atsi performance information for this address
934 * @param atsi_count number of performance information contained in @a atsi
937 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
938 const struct GNUNET_PeerIdentity *peer,
939 const char *plugin_name,
940 const void *plugin_addr,
941 size_t plugin_addr_len,
942 uint32_t local_address_info,
944 const struct GNUNET_ATS_Information *atsi,
947 struct ATS_Address *aa;
948 struct GNUNET_ATS_Information *atsi_delta;
949 uint32_t atsi_delta_count;
950 uint32_t prev_session;
953 if (GNUNET_NO == handle->running)
955 GNUNET_assert (NULL != handle->addresses);
957 /* Get existing address */
958 aa = find_exact_address (handle, peer, plugin_name, plugin_addr,
967 if (NULL == aa->solver_information)
973 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
974 "Received `%s' for peer `%s' address \n",
980 aa->t_last_activity = GNUNET_TIME_absolute_get();
981 if (session_id != aa->session_id)
983 /* Session changed */
984 prev_session = aa->session_id;
985 aa->session_id = session_id;
986 handle->env.sf.s_address_update_session (handle->solver,
993 atsi_delta_count = 0;
995 disassemble_ats_information (aa, atsi,
1000 /* ATS properties changed */
1001 for (c1 = 0; c1 < atsi_delta_count; c1++)
1003 if (GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
1005 /* Network type changed */
1006 handle->env.sf.s_address_update_network (handle->solver, aa,
1007 ntohl (atsi_delta[c1].value),
1008 get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE));
1012 /* Notify performance clients about updated address */
1013 GAS_performance_notify_all_clients (&aa->peer, aa->plugin, aa->addr,
1014 aa->addr_len, aa->active, aa->atsi, aa->atsi_count,
1015 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_out),
1016 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_in));
1018 handle->env.sf.s_bulk_start (handle->solver);
1019 GAS_normalization_normalize_property (handle->addresses,
1023 handle->env.sf.s_bulk_stop (handle->solver);
1025 GNUNET_free_non_null (atsi_delta);
1030 * Closure for #destroy_by_session_id().
1032 struct DestroyContext
1037 struct ATS_Address *aa;
1042 struct GAS_Addresses_Handle *handle;
1045 * #GNUNET_NO : full address
1046 * #GNUNET_YES : just session
1053 * Delete an address.
1057 * @param value the `struct ATS_Address *`
1058 * @return #GNUNET_OK (continue to iterate)
1061 destroy_by_session_id (void *cls,
1062 const struct GNUNET_PeerIdentity *key,
1065 struct DestroyContext *dc = cls;
1066 struct GAS_Addresses_Handle *handle = dc->handle;
1067 const struct ATS_Address *des = dc->aa;
1068 struct ATS_Address *aa = value;
1073 sizeof (struct GNUNET_PeerIdentity)));
1074 if ( (0 != strcmp (des->plugin, aa->plugin)) ||
1075 (aa->addr_len != des->addr_len) ||
1076 (0 != memcmp (des->addr, aa->addr, aa->addr_len)))
1077 return GNUNET_OK; /* wrong entry */
1078 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1079 "Deleting full address for peer `%s' session %u %p\n",
1080 GNUNET_i2s (&aa->peer),
1083 /* Notify solver about deletion */
1084 GNUNET_assert (GNUNET_YES ==
1085 GNUNET_CONTAINER_multipeermap_remove (handle->addresses,
1088 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
1089 GAS_performance_notify_all_clients (&aa->peer,
1098 dc->result = GNUNET_NO;
1099 return GNUNET_OK; /* Continue iteration */
1104 * Remove an address or just a session for a peer.
1106 * @param handle the address handle to use
1108 * @param plugin_name transport plugin name
1109 * @param plugin_addr plugin address
1110 * @param plugin_addr_len length of the plugin address in @a plugin_addr
1111 * @param local_address_info the local address for the address
1112 * @param session_id session id, can never be 0
1115 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1116 const struct GNUNET_PeerIdentity *peer,
1117 const char *plugin_name,
1118 const void *plugin_addr,
1119 size_t plugin_addr_len,
1120 uint32_t local_address_info,
1121 uint32_t session_id)
1123 struct ATS_Address *ea;
1124 struct DestroyContext dc;
1126 if (GNUNET_NO == handle->running)
1129 /* Get existing address */
1130 ea = find_exact_address (handle,
1140 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1141 "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1148 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1149 "Received `%s' for peer `%s' address %p session %u\n",
1150 "ADDRESS DESTROYED",
1154 GNUNET_break (0 < strlen (plugin_name));
1156 dc.aa = create_address (peer,
1162 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1164 &destroy_by_session_id, &dc);
1165 GNUNET_STATISTICS_set (handle->stat,
1167 GNUNET_CONTAINER_multipeermap_size (handle->addresses),
1169 free_address (dc.aa);
1174 * Notification about active use of an address.
1175 * in_use == #GNUNET_YES:
1176 * This address is used to maintain an active connection with a peer.
1177 * in_use == #GNUNET_NO:
1178 * This address is no longer used to maintain an active connection with a peer.
1180 * Note: can only be called with in_use == #GNUNET_NO if called with #GNUNET_YES
1183 * @param handle the address handle to use
1185 * @param plugin_name transport plugin name
1186 * @param plugin_addr plugin address
1187 * @param plugin_addr_len length of the plugin address
1188 * @param local_address_info the local address for the address
1189 * @param session_id session id, can be 0
1190 * @param in_use #GNUNET_YES if #GNUNET_NO FIXME
1191 * @return #GNUNET_SYSERR on failure (address unknown ...)
1194 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1195 const struct GNUNET_PeerIdentity *peer,
1196 const char *plugin_name,
1197 const void *plugin_addr,
1198 size_t plugin_addr_len,
1199 uint32_t local_address_info,
1200 uint32_t session_id,
1203 struct ATS_Address *ea;
1205 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1206 "Received `%s' for peer `%s'\n",
1209 if (GNUNET_NO == handle->running)
1210 return GNUNET_SYSERR;
1211 ea = find_exact_address (handle,
1219 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1220 "Trying to set unknown address `%s' `%s' `%u' to %s \n",
1224 (GNUNET_NO == in_use) ? "NO" : "YES");
1226 return GNUNET_SYSERR;
1228 if (ea->used == in_use)
1231 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1232 "Address in use called multiple times for peer `%s': %s -> %s \n",
1234 (GNUNET_NO == ea->used) ? "NO" : "YES",
1235 (GNUNET_NO == in_use) ? "NO" : "YES");
1236 return GNUNET_SYSERR;
1238 /* Tell solver about update */
1240 ea->t_last_activity = GNUNET_TIME_absolute_get();
1241 handle->env.sf.s_address_update_inuse (handle->solver,
1249 * Cancel address suggestions for a peer
1251 * @param handle the address handle
1252 * @param peer the peer id
1255 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1256 const struct GNUNET_PeerIdentity *peer)
1258 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1260 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received request: `%s' for peer %s\n",
1261 "request_address_cancel", GNUNET_i2s (peer));
1265 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1272 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1273 "No address requests pending for peer `%s', cannot remove!\n",
1277 handle->env.sf.s_get_stop (handle->solver, peer);
1278 GAS_addresses_handle_backoff_reset (handle, peer);
1279 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Removed request pending for peer `%s\n",
1281 GNUNET_CONTAINER_DLL_remove(handle->pending_requests_head, handle->pending_requests_tail, cur);
1287 * Request address suggestions for a peer
1289 * @param handle the address handle
1290 * @param peer the peer id
1293 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1294 const struct GNUNET_PeerIdentity *peer)
1296 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1297 struct ATS_Address *aa;
1299 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1300 "REQUEST ADDRESS", GNUNET_i2s (peer));
1302 if (GNUNET_NO == handle->running)
1306 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1307 break; /* already suggesting */
1312 cur = GNUNET_new (struct GAS_Addresses_Suggestion_Requests);
1314 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1315 "Adding new address suggestion request for `%s'\n",
1317 GNUNET_CONTAINER_DLL_insert(handle->pending_requests_head, handle->pending_requests_tail, cur);
1320 /* Get prefered address from solver */
1321 aa = (struct ATS_Address *) handle->env.sf.s_get (handle->solver, peer);
1324 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Cannot suggest address for peer `%s'\n",
1329 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Suggesting address %p for peer `%s'\n",
1330 aa, GNUNET_i2s (peer));
1332 GAS_scheduling_transmit_address_suggestion (peer, aa->plugin, aa->addr,
1333 aa->addr_len, aa->local_address_info, aa->session_id, aa->atsi,
1334 aa->atsi_count, GNUNET_BANDWIDTH_value_init (aa->assigned_bw_out),
1335 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_in));
1337 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval,
1338 ATS_BLOCKING_DELTA);
1339 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
1340 aa->block_interval);
1342 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1343 "Address %p ready for suggestion, block interval now %llu \n", aa,
1344 aa->block_interval);
1348 * Iterator to reset address blocking
1350 * @param cls not used
1351 * @param key the peer
1352 * @param value the address to reset
1353 * @return #GNUNET_OK to continue
1356 reset_address_it (void *cls,
1357 const struct GNUNET_PeerIdentity *key,
1360 struct ATS_Address *aa = value;
1362 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1363 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1364 GNUNET_i2s (&aa->peer),
1366 aa->block_interval);
1367 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1368 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1374 * Reset suggestion backoff for a peer
1376 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1377 * reset using this function
1379 * @param handle the address handle
1380 * @param peer the peer id
1383 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1384 const struct GNUNET_PeerIdentity *peer)
1386 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1387 "RESET BACKOFF", GNUNET_i2s (peer));
1390 GNUNET_SYSERR != GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1392 &reset_address_it, NULL));
1397 * Solver information callback
1399 * @param cls the closure
1400 * @param op the operation
1401 * @param stat operation status
1402 * @param add additional information
1406 solver_info_cb (void *cls,
1407 enum GAS_Solver_Operation op,
1408 enum GAS_Solver_Status stat,
1409 enum GAS_Solver_Additional_Information add)
1415 add_info = "GAS_INFO_NONE";
1418 add_info = "GAS_INFO_MLP_FULL";
1420 case GAS_INFO_UPDATED:
1421 add_info = "GAS_INFO_MLP_UPDATED";
1423 case GAS_INFO_PROP_ALL:
1424 add_info = "GAS_INFO_PROP_ALL";
1426 case GAS_INFO_PROP_SINGLE:
1427 add_info = "GAS_INFO_PROP_SINGLE";
1430 add_info = "INVALID";
1435 case GAS_OP_SOLVE_START:
1436 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1437 "Solver notifies `%s' with result `%s' `%s'\n", "GAS_OP_SOLVE_START",
1438 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1440 case GAS_OP_SOLVE_STOP:
1441 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1442 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_STOP",
1443 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1446 case GAS_OP_SOLVE_SETUP_START:
1447 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1448 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_START",
1449 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1452 case GAS_OP_SOLVE_SETUP_STOP:
1453 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1454 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_STOP",
1455 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1458 case GAS_OP_SOLVE_MLP_LP_START:
1459 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1460 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_START",
1461 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1463 case GAS_OP_SOLVE_MLP_LP_STOP:
1464 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1465 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_STOP",
1466 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1469 case GAS_OP_SOLVE_MLP_MLP_START:
1470 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1471 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_START",
1472 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1474 case GAS_OP_SOLVE_MLP_MLP_STOP:
1475 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1476 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_STOP",
1477 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1479 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_START:
1480 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1481 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_START",
1482 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1484 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP:
1485 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1486 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP",
1487 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1496 * The preference changed for a peer
1498 * @param cls the address handle
1499 * @param peer the peer
1500 * @param kind the ATS kind
1501 * @param pref_rel the new relative preference value
1504 normalized_preference_changed_cb (void *cls,
1505 const struct GNUNET_PeerIdentity *peer, enum GNUNET_ATS_PreferenceKind kind,
1508 GNUNET_assert(NULL != cls);
1509 struct GAS_Addresses_Handle *handle = cls;
1511 /* Tell solver about update */
1512 handle->env.sf.s_pref (handle->solver, peer, kind, pref_rel);
1516 * The relative value for a property changed
1518 * @param cls the address handle
1519 * @param address the peer
1520 * @param type the ATS type
1521 * @param prop_rel the new relative preference value
1524 normalized_property_changed_cb (void *cls, struct ATS_Address *address,
1525 uint32_t type, double prop_rel)
1527 struct GAS_Addresses_Handle *ah = (struct GAS_Addresses_Handle *) cls;
1528 GNUNET_assert(NULL != ah);
1530 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1531 "Normalized property %s for peer `%s' changed to %.3f \n",
1532 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1535 ah->env.sf.s_address_update_property (ah->solver, address, type, 0, prop_rel);
1538 static struct GAS_Addresses_Preference_Clients *
1539 find_preference_client (struct GAS_Addresses_Handle *handle, void *client)
1541 struct GAS_Addresses_Preference_Clients *cur;
1543 for (cur = handle->preference_clients_head; NULL != cur; cur = cur->next)
1545 if (cur->client == client)
1553 * A performance client disconnected
1555 * @param handle address handle
1556 * @param client the client
1559 GAS_addresses_preference_client_disconnect (struct GAS_Addresses_Handle *handle,
1562 struct GAS_Addresses_Preference_Clients * pc;
1563 if (NULL != (pc = find_preference_client (handle, client)))
1565 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
1566 handle->preference_clients_tail, pc);
1568 GNUNET_assert (handle->pref_clients > 0);
1569 handle->pref_clients --;
1570 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
1572 GAS_normalization_preference_client_disconnect (client);
1577 * Change the preference for a peer
1579 * @param handle the address handle
1580 * @param client the client sending this request
1581 * @param peer the peer id
1582 * @param kind the preference kind to change
1583 * @param score_abs the new preference score
1586 GAS_addresses_preference_change (struct GAS_Addresses_Handle *handle,
1587 void *client, const struct GNUNET_PeerIdentity *peer,
1588 enum GNUNET_ATS_PreferenceKind kind, float score_abs)
1590 struct GAS_Addresses_Preference_Clients * pc;
1591 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1592 "Received `%s' for peer `%s' for client %p\n", "CHANGE PREFERENCE",
1593 GNUNET_i2s (peer), client);
1595 if (GNUNET_NO == handle->running)
1599 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1602 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1603 "Received `%s' for unknown peer `%s' from client %p\n",
1604 "CHANGE PREFERENCE", GNUNET_i2s (peer), client);
1608 if (NULL == find_preference_client (handle, client))
1610 pc = GNUNET_new (struct GAS_Addresses_Preference_Clients);
1611 pc->client = client;
1612 GNUNET_CONTAINER_DLL_insert (handle->preference_clients_head,
1613 handle->preference_clients_tail, pc);
1614 handle->pref_clients ++;
1615 GNUNET_STATISTICS_set (handle->stat,
1616 "# active performance clients",
1617 handle->pref_clients,
1621 handle->env.sf.s_bulk_start (handle->solver);
1622 /* Tell normalization about change, normalization will call callback if preference changed */
1623 GAS_normalization_normalize_preference (client, peer, kind, score_abs);
1624 handle->env.sf.s_bulk_stop (handle->solver);
1629 * Change the preference for a peer
1631 * @param handle the address handle
1632 * @param application the client sending this request
1633 * @param peer the peer id
1634 * @param scope the time interval for this feedback: [now - scope .. now]
1635 * @param kind the preference kind to change
1636 * @param score_abs the new preference score
1639 GAS_addresses_preference_feedback (struct GAS_Addresses_Handle *handle,
1641 const struct GNUNET_PeerIdentity *peer,
1642 const struct GNUNET_TIME_Relative scope,
1643 enum GNUNET_ATS_PreferenceKind kind,
1646 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1647 "Received `%s' for peer `%s' for client %p\n", "PREFERENCE FEEDBACK",
1648 GNUNET_i2s (peer), application);
1650 if (GNUNET_NO == handle->running)
1654 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1657 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1658 "Received `%s' for unknown peer `%s' from client %p\n",
1659 "PREFERENCE FEEDBACK", GNUNET_i2s (peer), application);
1663 handle->env.sf.s_feedback (handle->solver, application, peer, scope, kind,
1669 * Load quotas for networks from configuration
1671 * @param cfg configuration handle
1672 * @param out_dest where to write outbound quotas
1673 * @param in_dest where to write inbound quotas
1674 * @param dest_length length of inbound and outbound arrays
1675 * @return number of networks loaded
1678 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg,
1679 unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1681 char * entry_in = NULL;
1682 char * entry_out = NULL;
1683 char * quota_out_str;
1684 char * quota_in_str;
1688 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1692 GNUNET_asprintf (&entry_out,
1694 GNUNET_ATS_print_network_type (c));
1695 GNUNET_asprintf (&entry_in,
1697 GNUNET_ATS_print_network_type (c));
1701 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_out,
1705 if (0 == strcmp (quota_out_str, GNUNET_ATS_MaxBandwidthString))
1707 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1710 if ((GNUNET_NO == res)
1712 == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str,
1715 if ((GNUNET_NO == res)
1717 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out,
1721 if (GNUNET_NO == res)
1723 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1724 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1725 GNUNET_ATS_print_network_type (c),
1727 GNUNET_ATS_DefaultBandwidth);
1728 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1732 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1733 _("Outbound quota configure for network `%s' is %llu\n"),
1734 GNUNET_ATS_print_network_type (c),
1737 GNUNET_free(quota_out_str);
1741 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1742 _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1743 GNUNET_ATS_print_network_type (c),
1744 GNUNET_ATS_DefaultBandwidth);
1745 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1750 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_in,
1754 if (0 == strcmp (quota_in_str, GNUNET_ATS_MaxBandwidthString))
1756 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1759 if ((GNUNET_NO == res)
1761 == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1763 if ((GNUNET_NO == res)
1765 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in,
1769 if (GNUNET_NO == res)
1771 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1772 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1773 GNUNET_ATS_print_network_type (c),
1775 GNUNET_ATS_DefaultBandwidth);
1776 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1780 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1781 _("Inbound quota configured for network `%s' is %llu\n"),
1782 GNUNET_ATS_print_network_type (c),
1785 GNUNET_free(quota_in_str);
1789 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1790 _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1791 GNUNET_ATS_print_network_type (c),
1792 GNUNET_ATS_DefaultBandwidth);
1793 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1795 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1796 "Loaded quota for network `%s' (in/out): %llu %llu\n",
1797 GNUNET_ATS_print_network_type (c),
1800 GNUNET_free(entry_out);
1801 GNUNET_free(entry_in);
1803 return GNUNET_ATS_NetworkTypeCount;
1808 * Callback for solver to notify about assignment changes
1810 * @param cls the GAS_Addresses_Handle
1811 * @param address the address with changes
1814 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1816 struct GAS_Addresses_Handle *handle = cls;
1817 struct GAS_Addresses_Suggestion_Requests *cur;
1821 GNUNET_assert(handle != NULL);
1822 GNUNET_assert(address != NULL);
1823 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1824 "Bandwidth assignment changed for peer %s \n",
1825 GNUNET_i2s (&address->peer));
1827 /* Notify performance clients about changes to address */
1828 GAS_performance_notify_all_clients (&address->peer, address->plugin,
1829 address->addr, address->addr_len, address->active, address->atsi,
1830 address->atsi_count,
1831 GNUNET_BANDWIDTH_value_init (address->assigned_bw_out),
1832 GNUNET_BANDWIDTH_value_init (address->assigned_bw_in));
1834 cur = handle->pending_requests_head;
1837 if (0 == memcmp (&address->peer, &cur->id, sizeof(cur->id)))
1838 break; /* we have an address request pending*/
1843 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1844 "Nobody is interested in peer `%s' :(\n",
1845 GNUNET_i2s (&address->peer));
1849 if ((0 == address->assigned_bw_in) && (0 == address->assigned_bw_out))
1851 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1852 "Telling transport to disconnect peer `%s'\n",
1853 GNUNET_i2s (&address->peer));
1855 /* *Notify scheduling clients about suggestion */
1856 GAS_scheduling_transmit_address_suggestion (&address->peer, address->plugin,
1857 address->addr, address->addr_len, address->local_address_info,
1858 address->session_id, address->atsi, address->atsi_count,
1859 GNUNET_BANDWIDTH_value_init (0),
1860 GNUNET_BANDWIDTH_value_init (0));
1865 /* Do bandwidth stability check */
1866 diff_out = abs (address->assigned_bw_out - address->last_notified_bw_out);
1867 diff_in = abs (address->assigned_bw_in - address->last_notified_bw_in);
1869 if ( (diff_out < htonl(GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__)) &&
1870 (diff_in < htonl(GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__)) )
1873 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1874 "Sending bandwidth update for peer `%s': %u %u\n",
1875 GNUNET_i2s (&address->peer), address->assigned_bw_out,
1876 address->assigned_bw_out);
1878 /* *Notify scheduling clients about suggestion */
1879 GAS_scheduling_transmit_address_suggestion (&address->peer, address->plugin,
1880 address->addr, address->addr_len, address->local_address_info,
1881 address->session_id, address->atsi, address->atsi_count,
1882 GNUNET_BANDWIDTH_value_init (address->assigned_bw_out),
1883 GNUNET_BANDWIDTH_value_init (address->assigned_bw_in));
1885 address->last_notified_bw_out = address->assigned_bw_out;
1886 address->last_notified_bw_in = address->assigned_bw_in;
1891 * Initialize address subsystem. The addresses subsystem manages the addresses
1892 * known and current performance information. It has a solver component
1893 * responsible for the resource allocation. It tells the solver about changes
1894 * and receives updates when the solver changes the resource allocation.
1896 * @param cfg configuration to use
1897 * @param stats the statistics handle to use
1898 * @return an address handle
1900 struct GAS_Addresses_Handle *
1901 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1902 const struct GNUNET_STATISTICS_Handle *stats)
1904 struct GAS_Addresses_Handle *ah;
1905 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1906 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1911 ah = GNUNET_new (struct GAS_Addresses_Handle);
1912 ah->running = GNUNET_NO;
1914 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1915 /* Initialize the addresses database */
1916 ah->addresses = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
1917 ah->pref_clients = 0;
1918 GNUNET_assert(NULL != ah->addresses);
1920 /* Figure out configured solution method */
1921 if (GNUNET_SYSERR ==
1922 GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1924 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1925 "No resource assignment method configured, using proportional approach\n");
1926 ah->ats_mode = MODE_PROPORTIONAL;
1930 for (c = 0; c < strlen (mode_str); c++)
1931 mode_str[c] = toupper (mode_str[c]);
1932 if (0 == strcmp (mode_str, "PROPORTIONAL"))
1933 ah->ats_mode = MODE_PROPORTIONAL;
1934 else if (0 == strcmp (mode_str, "MLP"))
1936 ah->ats_mode = MODE_MLP;
1938 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1939 "Assignment method `%s' configured, but GLPK is not available, please install \n",
1941 ah->ats_mode = MODE_PROPORTIONAL;
1944 else if (0 == strcmp (mode_str, "RIL"))
1945 ah->ats_mode = MODE_RIL;
1948 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1949 "Invalid resource assignment method `%s' configured, using proportional approach\n",
1951 ah->ats_mode = MODE_PROPORTIONAL;
1953 GNUNET_free(mode_str);
1956 load_quotas (cfg, quotas_out, quotas_in, GNUNET_ATS_NetworkTypeCount);
1957 ah->env.info_cb = &solver_info_cb;
1958 ah->env.info_cb_cls = ah;
1959 ah->env.bandwidth_changed_cb = &bandwidth_changed_cb;
1960 ah->env.bw_changed_cb_cls = ah;
1961 ah->env.get_preferences = &get_preferences_cb;
1962 ah->env.get_preference_cls = ah;
1963 ah->env.get_property = &get_property_cb;
1964 ah->env.get_property_cls = ah;
1966 ah->env.stats = stats;
1967 ah->env.addresses = ah->addresses;
1969 ah->env.network_count = GNUNET_ATS_NetworkTypeCount;
1970 int networks[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1971 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1973 ah->env.networks[c] = networks[c];
1974 ah->env.out_quota[c] = quotas_out[c];
1975 ah->env.in_quota[c] = quotas_in[c];
1978 switch (ah->ats_mode) {
1979 case MODE_PROPORTIONAL:
1980 plugin_short = "proportional";
1983 plugin_short = "mlp";
1986 plugin_short = "ril";
1989 plugin_short = NULL;
1992 GNUNET_asprintf (&ah->plugin,
1993 "libgnunet_plugin_ats_%s",
1995 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1996 _("Initializing solver `%s '`%s'\n"),
1999 if (NULL == (ah->solver = GNUNET_PLUGIN_load (ah->plugin, &ah->env)))
2001 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2002 _("Failed to initialize solver `%s'!\n"),
2007 GNUNET_assert (NULL != ah->env.sf.s_add);
2008 GNUNET_assert (NULL != ah->env.sf.s_address_update_inuse);
2009 GNUNET_assert (NULL != ah->env.sf.s_address_update_property);
2010 GNUNET_assert (NULL != ah->env.sf.s_address_update_session);
2011 GNUNET_assert (NULL != ah->env.sf.s_address_update_network);
2012 GNUNET_assert (NULL != ah->env.sf.s_get);
2013 GNUNET_assert (NULL != ah->env.sf.s_get_stop);
2014 GNUNET_assert (NULL != ah->env.sf.s_pref);
2015 GNUNET_assert (NULL != ah->env.sf.s_feedback);
2016 GNUNET_assert (NULL != ah->env.sf.s_del);
2017 GNUNET_assert (NULL != ah->env.sf.s_bulk_start);
2018 GNUNET_assert (NULL != ah->env.sf.s_bulk_stop);
2021 GAS_normalization_start (&normalized_preference_changed_cb, ah,
2022 &normalized_property_changed_cb, ah);
2024 if (NULL == ah->solver)
2026 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2027 _("Failed to initialize solver!\n"));
2031 /* up and running */
2032 ah->running = GNUNET_YES;
2034 GNUNET_STATISTICS_set (ah->stat, "# addresses",
2035 GNUNET_CONTAINER_multipeermap_size (ah->addresses), GNUNET_NO);
2042 * Destroy all addresses iterator
2045 * @param key peer identity (unused)
2046 * @param value the 'struct ATS_Address' to free
2047 * @return #GNUNET_OK (continue to iterate)
2050 destroy_all_address_it (void *cls,
2051 const struct GNUNET_PeerIdentity *key,
2054 struct GAS_Addresses_Handle *handle = cls;
2055 struct ATS_Address *aa = value;
2058 GNUNET_assert(GNUNET_YES ==
2059 GNUNET_CONTAINER_multipeermap_remove (handle->addresses, key, value));
2061 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
2063 GAS_performance_notify_all_clients (&aa->peer,
2077 * Remove all addresses
2079 * @param handle the address handle to use
2082 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
2084 if (GNUNET_NO == handle->running)
2087 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2088 "Destroying all addresses\n");
2089 handle->env.sf.s_bulk_start (handle->solver);
2090 if (NULL != handle->addresses)
2091 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2092 &destroy_all_address_it,
2094 handle->env.sf.s_bulk_start (handle->solver);
2099 * Shutdown address subsystem.
2101 * @param handle the address handle to shutdown
2104 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
2106 struct GAS_Addresses_Suggestion_Requests *cur;
2107 struct GAS_Addresses_Preference_Clients *pcur;
2109 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Shutting down addresses\n");
2110 GNUNET_assert(NULL != handle);
2111 GAS_addresses_destroy_all (handle);
2112 handle->running = GNUNET_NO;
2113 GNUNET_CONTAINER_multipeermap_destroy (handle->addresses);
2114 handle->addresses = NULL;
2115 while (NULL != (cur = handle->pending_requests_head))
2117 GNUNET_CONTAINER_DLL_remove (handle->pending_requests_head,
2118 handle->pending_requests_tail,
2123 while (NULL != (pcur = handle->preference_clients_head))
2125 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
2126 handle->preference_clients_tail,
2128 GNUNET_assert (handle->pref_clients > 0);
2129 handle->pref_clients --;
2130 GNUNET_STATISTICS_set (handle->stat,
2131 "# active performance clients",
2132 handle->pref_clients,
2136 GNUNET_PLUGIN_unload (handle->plugin,
2138 GNUNET_free (handle->plugin);
2139 GNUNET_free(handle);
2140 /* Stop configured solution method */
2141 GAS_normalization_stop ();
2146 * Closure for #peerinfo_it().
2148 struct PeerInfoIteratorContext
2151 * Function to call for each address.
2153 GNUNET_ATS_PeerInfo_Iterator it;
2156 * Closure for @e it.
2163 * Iterator to iterate over a peer's addresses
2165 * @param cls a `struct PeerInfoIteratorContext`
2166 * @param key the peer id
2167 * @param value the `struct ATS_address`
2168 * @return #GNUNET_OK to continue
2171 peerinfo_it (void *cls,
2172 const struct GNUNET_PeerIdentity *key,
2175 struct PeerInfoIteratorContext *pi_ctx = cls;
2176 struct ATS_Address *addr = value;
2178 pi_ctx->it (pi_ctx->it_cls,
2184 addr->atsi, addr->atsi_count,
2185 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_out),
2186 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_in));
2192 * Return information all peers currently known to ATS
2194 * @param handle the address handle to use
2195 * @param peer the respective peer, NULL for 'all' peers
2196 * @param pi_it the iterator to call for every peer
2197 * @param pi_it_cls the closure for @a pi_it
2200 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
2201 const struct GNUNET_PeerIdentity *peer,
2202 GNUNET_ATS_PeerInfo_Iterator pi_it,
2205 struct PeerInfoIteratorContext pi_ctx;
2209 /* does not make sense without callback */
2213 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2214 "Returning information for %s from a total of %u known addresses\n",
2217 : GNUNET_i2s (peer),
2218 (unsigned int) GNUNET_CONTAINER_multipeermap_size (handle->addresses));
2220 pi_ctx.it_cls = pi_it_cls;
2222 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2226 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
2228 &peerinfo_it, &pi_ctx);
2230 NULL, NULL, NULL, 0,
2237 /* end of gnunet-service-ats_addresses.c */