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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 * Closure for #find_address_cb()
647 struct FindAddressContext
650 * Session Id to look for.
655 * Where to store matching address result.
657 struct ATS_Address *exact_address;
663 * Find session matching given session ID.
665 * @param cls a `struct FindAddressContext`
667 * @param value the address to compare with
668 * @return #GNUNET_YES to continue, #GNUNET_NO if address is found
671 find_address_cb (void *cls,
672 const struct GNUNET_PeerIdentity *key,
675 struct FindAddressContext *fac = cls;
676 struct ATS_Address *aa = value;
678 if (aa->session_id == fac->session_id)
680 fac->exact_address = aa;
688 * Find the exact address
690 * @param handle the address handle to use
692 * @param session_id session id, can never be 0
693 * @return an ATS_address or NULL
695 static struct ATS_Address *
696 find_exact_address (struct GAS_Addresses_Handle *handle,
697 const struct GNUNET_PeerIdentity *peer,
700 struct FindAddressContext fac;
702 fac.exact_address = NULL;
703 fac.session_id = session_id;
704 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
706 &find_address_cb, &fac);
707 return fac.exact_address;
712 * Function allowing the solver to obtain normalized preference
716 * @param id the peer to return the normalized properties for
717 * @return array of double values with |GNUNET_ATS_PreferenceCount| elements
720 get_preferences_cb (void *cls,
721 const struct GNUNET_PeerIdentity *id)
723 return GAS_normalization_get_preferences_by_peer (id);
728 * Function allowing the solver to obtain normalized property
729 * values for an address from solver
732 * @param address the address
733 * @return array of double values with |GNUNET_ATS_QualityPropertiesCount| elements
736 get_property_cb (void *cls, const struct ATS_Address *address)
738 return GAS_normalization_get_properties ((struct ATS_Address *) address);
743 * Extract an ATS performance info from an address
745 * @param address the address
746 * @param type the type to extract in HBO
747 * @return the value in HBO or #GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
750 get_performance_info (struct ATS_Address *address, uint32_t type)
753 GNUNET_assert(NULL != address);
755 if ((NULL == address->atsi) || (0 == address->atsi_count))
756 return GNUNET_ATS_VALUE_UNDEFINED;
758 for (c1 = 0; c1 < address->atsi_count; c1++)
760 if (ntohl (address->atsi[c1].type) == type)
761 return ntohl (address->atsi[c1].value);
763 return GNUNET_ATS_VALUE_UNDEFINED;
768 * Add a new address for a peer.
770 * @param handle the address handle to use
772 * @param plugin_name transport plugin name
773 * @param plugin_addr plugin address
774 * @param plugin_addr_len length of the plugin address in @a plugin_addr
775 * @param local_address_info the local address for the address
776 * @param session_id session id, can be 0
777 * @param atsi performance information for this address
778 * @param atsi_count number of performance information contained in @a atsi
781 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
782 const struct GNUNET_PeerIdentity *peer,
783 const char *plugin_name,
784 const void *plugin_addr,
785 size_t plugin_addr_len,
786 uint32_t local_address_info,
788 const struct GNUNET_ATS_Information *atsi,
791 struct ATS_Address *new_address;
792 struct ATS_Address *existing_address;
793 struct GNUNET_ATS_Information *atsi_delta;
794 uint32_t atsi_delta_count;
796 uint32_t previous_session;
799 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
800 "Received `%s' for peer `%s'\n",
804 if (GNUNET_NO == handle->running)
807 GNUNET_assert(NULL != handle->addresses);
809 new_address = create_address (peer, plugin_name,
810 plugin_addr, plugin_addr_len,
811 local_address_info, session_id);
813 disassemble_ats_information (new_address, atsi, atsi_count, &atsi_delta,
815 GNUNET_free_non_null (atsi_delta);
816 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
817 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
818 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
820 /* Get existing address or address with session == 0 */
821 existing_address = find_equivalent_address (handle, peer, new_address);
822 if (existing_address == NULL)
824 /* Add a new address */
825 new_address->t_added = GNUNET_TIME_absolute_get();
826 new_address->t_last_activity = GNUNET_TIME_absolute_get();
827 GNUNET_assert(GNUNET_OK ==
828 GNUNET_CONTAINER_multipeermap_put (handle->addresses,
831 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
833 GNUNET_STATISTICS_set (handle->stat,
835 GNUNET_CONTAINER_multipeermap_size (handle->addresses),
838 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
839 "Adding new address %p for peer `%s', length %u, session id %u, %s\n",
844 GNUNET_ATS_print_network_type (addr_net));
846 /* Tell solver about new address */
847 handle->env.sf.s_add (handle->solver, new_address, addr_net);
849 handle->env.sf.s_bulk_start (handle->solver);
850 GAS_normalization_normalize_property (handle->addresses,
854 handle->env.sf.s_bulk_stop (handle->solver);
856 /* Notify performance clients about new address */
857 GAS_performance_notify_all_clients (&new_address->peer, new_address->plugin,
858 new_address->addr, new_address->addr_len, new_address->active,
859 new_address->atsi, new_address->atsi_count,
860 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_out),
861 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_in));
865 /* We have an existing address we can use, clean up new */
866 GNUNET_free(new_address->plugin);
867 GNUNET_free_non_null(new_address->atsi);
868 GNUNET_free(new_address);
871 if (0 != existing_address->session_id)
873 /* Should not happen */
878 addr_net = get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE);
879 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
880 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
882 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
883 "Found existing address for peer `%s' %p with new session %u in network %s\n",
884 GNUNET_i2s (peer), existing_address, session_id,
885 GNUNET_ATS_print_network_type (addr_net));
886 /* We have an address without an session, update this address */
887 existing_address->t_added = GNUNET_TIME_absolute_get();
888 existing_address->t_last_activity = GNUNET_TIME_absolute_get();
890 atsi_delta_count = 0;
892 == disassemble_ats_information (existing_address, atsi, atsi_count,
893 &atsi_delta, &atsi_delta_count))
895 /* Notify performance clients about properties */
896 GAS_performance_notify_all_clients (&existing_address->peer,
897 existing_address->plugin, existing_address->addr,
898 existing_address->addr_len, existing_address->active,
899 existing_address->atsi, existing_address->atsi_count,
900 GNUNET_BANDWIDTH_value_init (existing_address->assigned_bw_out),
901 GNUNET_BANDWIDTH_value_init (existing_address->assigned_bw_in));
903 for (c1 = 0; c1 < atsi_delta_count; c1++)
905 if ((GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
906 && (addr_net != ntohl (atsi_delta[c1].value)))
908 /* Network type changed */
909 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
910 "Address for peer `%s' %p changed from network %s to %s\n",
911 GNUNET_i2s (peer), existing_address,
912 GNUNET_ATS_print_network_type (addr_net),
913 GNUNET_ATS_print_network_type (ntohl (atsi_delta[c1].value)));
914 handle->env.sf.s_address_update_network (handle->solver, existing_address,
915 ntohl (atsi_delta[c1].value),
916 get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE));
917 addr_net = get_performance_info (existing_address,
918 GNUNET_ATS_NETWORK_TYPE);
921 /* Notify solver about update with atsi information and session */
922 handle->env.sf.s_bulk_start (handle->solver);
923 GAS_normalization_normalize_property (handle->addresses, existing_address,
925 handle->env.sf.s_bulk_stop (handle->solver);
927 GNUNET_free_non_null(atsi_delta);
929 /* Notify solver about new session */
930 if (existing_address->session_id == session_id)
931 return; /* possible, can both be 0 since address is revalidated */
933 previous_session = existing_address->session_id;
934 existing_address->session_id = session_id;
935 handle->env.sf.s_address_update_session (handle->solver, existing_address,
936 previous_session, session_id);
938 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
939 "Updated existing address for peer `%s' %p length %u with new session %u in network %s\n",
940 GNUNET_i2s (peer), existing_address, existing_address->addr_len,
941 session_id, GNUNET_ATS_print_network_type (addr_net));
946 * Update an address with new performance information for a peer.
948 * @param handle the address handle to use
950 * @param session_id session id, never 0
951 * @param atsi performance information for this address
952 * @param atsi_count number of performance information contained in @a atsi
955 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
956 const struct GNUNET_PeerIdentity *peer,
958 const struct GNUNET_ATS_Information *atsi,
961 struct ATS_Address *aa;
962 struct GNUNET_ATS_Information *atsi_delta;
963 uint32_t atsi_delta_count;
964 uint32_t prev_session;
967 if (GNUNET_NO == handle->running)
969 GNUNET_assert (NULL != handle->addresses);
971 /* Get existing address */
972 aa = find_exact_address (handle,
980 if (NULL == aa->solver_information)
986 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
987 "Received `%s' for peer `%s' address \n",
993 aa->t_last_activity = GNUNET_TIME_absolute_get();
994 if (session_id != aa->session_id)
996 /* Session changed */
997 prev_session = aa->session_id;
998 aa->session_id = session_id;
999 handle->env.sf.s_address_update_session (handle->solver,
1006 atsi_delta_count = 0;
1008 disassemble_ats_information (aa, atsi,
1013 /* ATS properties changed */
1014 for (c1 = 0; c1 < atsi_delta_count; c1++)
1016 if (GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
1018 /* Network type changed */
1019 handle->env.sf.s_address_update_network (handle->solver, aa,
1020 ntohl (atsi_delta[c1].value),
1021 get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE));
1025 /* Notify performance clients about updated address */
1026 GAS_performance_notify_all_clients (&aa->peer, aa->plugin, aa->addr,
1027 aa->addr_len, aa->active, aa->atsi, aa->atsi_count,
1028 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_out),
1029 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_in));
1031 handle->env.sf.s_bulk_start (handle->solver);
1032 GAS_normalization_normalize_property (handle->addresses,
1036 handle->env.sf.s_bulk_stop (handle->solver);
1038 GNUNET_free_non_null (atsi_delta);
1043 * Remove an address or just a session for a peer.
1045 * @param handle the address handle to use
1047 * @param session_id session id, can never be 0
1050 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1051 const struct GNUNET_PeerIdentity *peer,
1052 uint32_t session_id)
1054 struct ATS_Address *ea;
1056 if (GNUNET_NO == handle->running)
1059 /* Get existing address */
1060 ea = find_exact_address (handle,
1066 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1067 "Tried to destroy unknown address for peer `%s' session id %u\n",
1073 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1074 "Received `%s' for peer `%s' address %p session %u\n",
1075 "ADDRESS DESTROYED",
1079 GNUNET_CONTAINER_multipeermap_remove (handle->addresses,
1083 handle->env.sf.s_del (handle->solver, ea, GNUNET_NO);
1084 GAS_performance_notify_all_clients (peer,
1093 GNUNET_STATISTICS_set (handle->stat,
1095 GNUNET_CONTAINER_multipeermap_size (handle->addresses),
1101 * Notification about active use of an address.
1102 * in_use == #GNUNET_YES:
1103 * This address is used to maintain an active connection with a peer.
1104 * in_use == #GNUNET_NO:
1105 * This address is no longer used to maintain an active connection with a peer.
1107 * Note: can only be called with in_use == #GNUNET_NO if called with #GNUNET_YES
1110 * @param handle the address handle to use
1112 * @param session_id session id, can be 0
1113 * @param in_use #GNUNET_YES if #GNUNET_NO FIXME
1114 * @return #GNUNET_SYSERR on failure (address unknown ...)
1117 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1118 const struct GNUNET_PeerIdentity *peer,
1119 uint32_t session_id,
1122 struct ATS_Address *ea;
1124 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1125 "Received `%s' for peer `%s'\n",
1128 if (GNUNET_NO == handle->running)
1129 return GNUNET_SYSERR;
1130 ea = find_exact_address (handle,
1135 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1136 "Trying to set unknown address `%s' `%u' to %s \n",
1139 (GNUNET_NO == in_use) ? "NO" : "YES");
1141 return GNUNET_SYSERR;
1143 if (ea->used == in_use)
1146 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1147 "Address in use called multiple times for peer `%s': %s -> %s \n",
1149 (GNUNET_NO == ea->used) ? "NO" : "YES",
1150 (GNUNET_NO == in_use) ? "NO" : "YES");
1151 return GNUNET_SYSERR;
1153 /* Tell solver about update */
1155 ea->t_last_activity = GNUNET_TIME_absolute_get();
1156 handle->env.sf.s_address_update_inuse (handle->solver,
1164 * Cancel address suggestions for a peer
1166 * @param handle the address handle
1167 * @param peer the peer id
1170 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1171 const struct GNUNET_PeerIdentity *peer)
1173 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1175 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received request: `%s' for peer %s\n",
1176 "request_address_cancel", GNUNET_i2s (peer));
1180 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1187 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1188 "No address requests pending for peer `%s', cannot remove!\n",
1192 handle->env.sf.s_get_stop (handle->solver, peer);
1193 GAS_addresses_handle_backoff_reset (handle, peer);
1194 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Removed request pending for peer `%s\n",
1196 GNUNET_CONTAINER_DLL_remove(handle->pending_requests_head, handle->pending_requests_tail, cur);
1202 * Request address suggestions for a peer
1204 * @param handle the address handle
1205 * @param peer the peer id
1208 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1209 const struct GNUNET_PeerIdentity *peer)
1211 struct GAS_Addresses_Suggestion_Requests *cur = handle->pending_requests_head;
1212 struct ATS_Address *aa;
1214 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1215 "REQUEST ADDRESS", GNUNET_i2s (peer));
1217 if (GNUNET_NO == handle->running)
1221 if (0 == memcmp (peer, &cur->id, sizeof(cur->id)))
1222 break; /* already suggesting */
1227 cur = GNUNET_new (struct GAS_Addresses_Suggestion_Requests);
1229 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1230 "Adding new address suggestion request for `%s'\n",
1232 GNUNET_CONTAINER_DLL_insert(handle->pending_requests_head, handle->pending_requests_tail, cur);
1235 /* Get prefered address from solver */
1236 aa = (struct ATS_Address *) handle->env.sf.s_get (handle->solver, peer);
1239 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Cannot suggest address for peer `%s'\n",
1244 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Suggesting address %p for peer `%s'\n",
1245 aa, GNUNET_i2s (peer));
1247 GAS_scheduling_transmit_address_suggestion (peer,
1249 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_out),
1250 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_in));
1252 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval,
1253 ATS_BLOCKING_DELTA);
1254 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
1255 aa->block_interval);
1257 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1258 "Address %p ready for suggestion, block interval now %llu \n", aa,
1259 aa->block_interval);
1263 * Iterator to reset address blocking
1265 * @param cls not used
1266 * @param key the peer
1267 * @param value the address to reset
1268 * @return #GNUNET_OK to continue
1271 reset_address_it (void *cls,
1272 const struct GNUNET_PeerIdentity *key,
1275 struct ATS_Address *aa = value;
1277 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1278 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1279 GNUNET_i2s (&aa->peer),
1281 aa->block_interval);
1282 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1283 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1289 * Reset suggestion backoff for a peer
1291 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1292 * reset using this function
1294 * @param handle the address handle
1295 * @param peer the peer id
1298 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1299 const struct GNUNET_PeerIdentity *peer)
1301 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received `%s' for peer `%s'\n",
1302 "RESET BACKOFF", GNUNET_i2s (peer));
1305 GNUNET_SYSERR != GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
1307 &reset_address_it, NULL));
1312 * Solver information callback
1314 * @param cls the closure
1315 * @param op the operation
1316 * @param stat operation status
1317 * @param add additional information
1321 solver_info_cb (void *cls,
1322 enum GAS_Solver_Operation op,
1323 enum GAS_Solver_Status stat,
1324 enum GAS_Solver_Additional_Information add)
1330 add_info = "GAS_INFO_NONE";
1333 add_info = "GAS_INFO_MLP_FULL";
1335 case GAS_INFO_UPDATED:
1336 add_info = "GAS_INFO_MLP_UPDATED";
1338 case GAS_INFO_PROP_ALL:
1339 add_info = "GAS_INFO_PROP_ALL";
1341 case GAS_INFO_PROP_SINGLE:
1342 add_info = "GAS_INFO_PROP_SINGLE";
1345 add_info = "INVALID";
1350 case GAS_OP_SOLVE_START:
1351 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1352 "Solver notifies `%s' with result `%s' `%s'\n", "GAS_OP_SOLVE_START",
1353 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1355 case GAS_OP_SOLVE_STOP:
1356 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1357 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_STOP",
1358 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL", add_info);
1361 case GAS_OP_SOLVE_SETUP_START:
1362 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1363 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_START",
1364 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1367 case GAS_OP_SOLVE_SETUP_STOP:
1368 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1369 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_SETUP_STOP",
1370 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1373 case GAS_OP_SOLVE_MLP_LP_START:
1374 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1375 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_START",
1376 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1378 case GAS_OP_SOLVE_MLP_LP_STOP:
1379 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1380 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_LP_STOP",
1381 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1384 case GAS_OP_SOLVE_MLP_MLP_START:
1385 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1386 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_START",
1387 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1389 case GAS_OP_SOLVE_MLP_MLP_STOP:
1390 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1391 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_MLP_STOP",
1392 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1394 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_START:
1395 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1396 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_START",
1397 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1399 case GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP:
1400 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1401 "Solver notifies `%s' with result `%s'\n", "GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP",
1402 (GAS_STAT_SUCCESS == stat) ? "SUCCESS" : "FAIL");
1411 * The preference changed for a peer
1413 * @param cls the address handle
1414 * @param peer the peer
1415 * @param kind the ATS kind
1416 * @param pref_rel the new relative preference value
1419 normalized_preference_changed_cb (void *cls,
1420 const struct GNUNET_PeerIdentity *peer, enum GNUNET_ATS_PreferenceKind kind,
1423 GNUNET_assert(NULL != cls);
1424 struct GAS_Addresses_Handle *handle = cls;
1426 /* Tell solver about update */
1427 handle->env.sf.s_pref (handle->solver, peer, kind, pref_rel);
1431 * The relative value for a property changed
1433 * @param cls the address handle
1434 * @param address the peer
1435 * @param type the ATS type
1436 * @param prop_rel the new relative preference value
1439 normalized_property_changed_cb (void *cls, struct ATS_Address *address,
1440 uint32_t type, double prop_rel)
1442 struct GAS_Addresses_Handle *ah = (struct GAS_Addresses_Handle *) cls;
1443 GNUNET_assert(NULL != ah);
1445 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1446 "Normalized property %s for peer `%s' changed to %.3f \n",
1447 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1450 ah->env.sf.s_address_update_property (ah->solver, address, type, 0, prop_rel);
1453 static struct GAS_Addresses_Preference_Clients *
1454 find_preference_client (struct GAS_Addresses_Handle *handle, void *client)
1456 struct GAS_Addresses_Preference_Clients *cur;
1458 for (cur = handle->preference_clients_head; NULL != cur; cur = cur->next)
1460 if (cur->client == client)
1468 * A performance client disconnected
1470 * @param handle address handle
1471 * @param client the client
1474 GAS_addresses_preference_client_disconnect (struct GAS_Addresses_Handle *handle,
1477 struct GAS_Addresses_Preference_Clients * pc;
1478 if (NULL != (pc = find_preference_client (handle, client)))
1480 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
1481 handle->preference_clients_tail, pc);
1483 GNUNET_assert (handle->pref_clients > 0);
1484 handle->pref_clients --;
1485 GNUNET_STATISTICS_set (handle->stat, "# active performance clients", handle->pref_clients, GNUNET_NO);
1487 GAS_normalization_preference_client_disconnect (client);
1492 * Change the preference for a peer
1494 * @param handle the address handle
1495 * @param client the client sending this request
1496 * @param peer the peer id
1497 * @param kind the preference kind to change
1498 * @param score_abs the new preference score
1501 GAS_addresses_preference_change (struct GAS_Addresses_Handle *handle,
1502 void *client, const struct GNUNET_PeerIdentity *peer,
1503 enum GNUNET_ATS_PreferenceKind kind, float score_abs)
1505 struct GAS_Addresses_Preference_Clients * pc;
1506 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1507 "Received `%s' for peer `%s' for client %p\n", "CHANGE PREFERENCE",
1508 GNUNET_i2s (peer), client);
1510 if (GNUNET_NO == handle->running)
1514 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1517 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1518 "Received `%s' for unknown peer `%s' from client %p\n",
1519 "CHANGE PREFERENCE", GNUNET_i2s (peer), client);
1523 if (NULL == find_preference_client (handle, client))
1525 pc = GNUNET_new (struct GAS_Addresses_Preference_Clients);
1526 pc->client = client;
1527 GNUNET_CONTAINER_DLL_insert (handle->preference_clients_head,
1528 handle->preference_clients_tail, pc);
1529 handle->pref_clients ++;
1530 GNUNET_STATISTICS_set (handle->stat,
1531 "# active performance clients",
1532 handle->pref_clients,
1536 handle->env.sf.s_bulk_start (handle->solver);
1537 /* Tell normalization about change, normalization will call callback if preference changed */
1538 GAS_normalization_normalize_preference (client, peer, kind, score_abs);
1539 handle->env.sf.s_bulk_stop (handle->solver);
1544 * Change the preference for a peer
1546 * @param handle the address handle
1547 * @param application the client sending this request
1548 * @param peer the peer id
1549 * @param scope the time interval for this feedback: [now - scope .. now]
1550 * @param kind the preference kind to change
1551 * @param score_abs the new preference score
1554 GAS_addresses_preference_feedback (struct GAS_Addresses_Handle *handle,
1556 const struct GNUNET_PeerIdentity *peer,
1557 const struct GNUNET_TIME_Relative scope,
1558 enum GNUNET_ATS_PreferenceKind kind,
1561 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1562 "Received `%s' for peer `%s' for client %p\n", "PREFERENCE FEEDBACK",
1563 GNUNET_i2s (peer), application);
1565 if (GNUNET_NO == handle->running)
1569 GNUNET_CONTAINER_multipeermap_contains (handle->addresses,
1572 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1573 "Received `%s' for unknown peer `%s' from client %p\n",
1574 "PREFERENCE FEEDBACK", GNUNET_i2s (peer), application);
1578 handle->env.sf.s_feedback (handle->solver, application, peer, scope, kind,
1584 * Load quotas for networks from configuration
1586 * @param cfg configuration handle
1587 * @param out_dest where to write outbound quotas
1588 * @param in_dest where to write inbound quotas
1589 * @param dest_length length of inbound and outbound arrays
1590 * @return number of networks loaded
1593 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg,
1594 unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1596 char * entry_in = NULL;
1597 char * entry_out = NULL;
1598 char * quota_out_str;
1599 char * quota_in_str;
1603 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1607 GNUNET_asprintf (&entry_out,
1609 GNUNET_ATS_print_network_type (c));
1610 GNUNET_asprintf (&entry_in,
1612 GNUNET_ATS_print_network_type (c));
1616 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_out,
1620 if (0 == strcmp (quota_out_str, GNUNET_ATS_MaxBandwidthString))
1622 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1625 if ((GNUNET_NO == res)
1627 == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str,
1630 if ((GNUNET_NO == res)
1632 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out,
1636 if (GNUNET_NO == res)
1638 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1639 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1640 GNUNET_ATS_print_network_type (c),
1642 GNUNET_ATS_DefaultBandwidth);
1643 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1647 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1648 _("Outbound quota configure for network `%s' is %llu\n"),
1649 GNUNET_ATS_print_network_type (c),
1652 GNUNET_free(quota_out_str);
1656 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1657 _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1658 GNUNET_ATS_print_network_type (c),
1659 GNUNET_ATS_DefaultBandwidth);
1660 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1665 == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", entry_in,
1669 if (0 == strcmp (quota_in_str, GNUNET_ATS_MaxBandwidthString))
1671 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1674 if ((GNUNET_NO == res)
1676 == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1678 if ((GNUNET_NO == res)
1680 == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in,
1684 if (GNUNET_NO == res)
1686 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1687 _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1688 GNUNET_ATS_print_network_type (c),
1690 GNUNET_ATS_DefaultBandwidth);
1691 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1695 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1696 _("Inbound quota configured for network `%s' is %llu\n"),
1697 GNUNET_ATS_print_network_type (c),
1700 GNUNET_free(quota_in_str);
1704 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1705 _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1706 GNUNET_ATS_print_network_type (c),
1707 GNUNET_ATS_DefaultBandwidth);
1708 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1710 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
1711 "Loaded quota for network `%s' (in/out): %llu %llu\n",
1712 GNUNET_ATS_print_network_type (c),
1715 GNUNET_free(entry_out);
1716 GNUNET_free(entry_in);
1718 return GNUNET_ATS_NetworkTypeCount;
1723 * Callback for solver to notify about assignment changes
1725 * @param cls the GAS_Addresses_Handle
1726 * @param address the address with changes
1729 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1731 struct GAS_Addresses_Handle *handle = cls;
1732 struct GAS_Addresses_Suggestion_Requests *cur;
1736 GNUNET_assert(handle != NULL);
1737 GNUNET_assert(address != NULL);
1738 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1739 "Bandwidth assignment changed for peer %s \n",
1740 GNUNET_i2s (&address->peer));
1742 /* Notify performance clients about changes to address */
1743 GAS_performance_notify_all_clients (&address->peer, address->plugin,
1744 address->addr, address->addr_len, address->active, address->atsi,
1745 address->atsi_count,
1746 GNUNET_BANDWIDTH_value_init (address->assigned_bw_out),
1747 GNUNET_BANDWIDTH_value_init (address->assigned_bw_in));
1749 cur = handle->pending_requests_head;
1752 if (0 == memcmp (&address->peer, &cur->id, sizeof(cur->id)))
1753 break; /* we have an address request pending*/
1758 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1759 "Nobody is interested in peer `%s' :(\n",
1760 GNUNET_i2s (&address->peer));
1764 if ((0 == address->assigned_bw_in) && (0 == address->assigned_bw_out))
1766 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1767 "Telling transport to disconnect peer `%s'\n",
1768 GNUNET_i2s (&address->peer));
1770 /* Notify scheduling clients about suggestion */
1771 GAS_scheduling_transmit_address_suggestion (&address->peer,
1772 address->session_id,
1773 GNUNET_BANDWIDTH_value_init (0),
1774 GNUNET_BANDWIDTH_value_init (0));
1778 /* Do bandwidth stability check */
1779 diff_out = abs (address->assigned_bw_out - address->last_notified_bw_out);
1780 diff_in = abs (address->assigned_bw_in - address->last_notified_bw_in);
1782 if ( (diff_out < htonl(GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__)) &&
1783 (diff_in < htonl(GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__)) )
1786 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1787 "Sending bandwidth update for peer `%s': %u %u\n",
1788 GNUNET_i2s (&address->peer), address->assigned_bw_out,
1789 address->assigned_bw_out);
1791 /* *Notify scheduling clients about suggestion */
1792 GAS_scheduling_transmit_address_suggestion (&address->peer,
1793 address->session_id,
1794 GNUNET_BANDWIDTH_value_init (address->assigned_bw_out),
1795 GNUNET_BANDWIDTH_value_init (address->assigned_bw_in));
1797 address->last_notified_bw_out = address->assigned_bw_out;
1798 address->last_notified_bw_in = address->assigned_bw_in;
1803 * Initialize address subsystem. The addresses subsystem manages the addresses
1804 * known and current performance information. It has a solver component
1805 * responsible for the resource allocation. It tells the solver about changes
1806 * and receives updates when the solver changes the resource allocation.
1808 * @param cfg configuration to use
1809 * @param stats the statistics handle to use
1810 * @return an address handle
1812 struct GAS_Addresses_Handle *
1813 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1814 const struct GNUNET_STATISTICS_Handle *stats)
1816 struct GAS_Addresses_Handle *ah;
1817 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1818 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1823 ah = GNUNET_new (struct GAS_Addresses_Handle);
1824 ah->running = GNUNET_NO;
1826 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1827 /* Initialize the addresses database */
1828 ah->addresses = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
1829 ah->pref_clients = 0;
1830 GNUNET_assert(NULL != ah->addresses);
1832 /* Figure out configured solution method */
1833 if (GNUNET_SYSERR ==
1834 GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1836 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
1837 "No resource assignment method configured, using proportional approach\n");
1838 ah->ats_mode = MODE_PROPORTIONAL;
1842 for (c = 0; c < strlen (mode_str); c++)
1843 mode_str[c] = toupper (mode_str[c]);
1844 if (0 == strcmp (mode_str, "PROPORTIONAL"))
1845 ah->ats_mode = MODE_PROPORTIONAL;
1846 else if (0 == strcmp (mode_str, "MLP"))
1848 ah->ats_mode = MODE_MLP;
1850 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1851 "Assignment method `%s' configured, but GLPK is not available, please install \n",
1853 ah->ats_mode = MODE_PROPORTIONAL;
1856 else if (0 == strcmp (mode_str, "RIL"))
1857 ah->ats_mode = MODE_RIL;
1860 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
1861 "Invalid resource assignment method `%s' configured, using proportional approach\n",
1863 ah->ats_mode = MODE_PROPORTIONAL;
1865 GNUNET_free(mode_str);
1868 load_quotas (cfg, quotas_out, quotas_in, GNUNET_ATS_NetworkTypeCount);
1869 ah->env.info_cb = &solver_info_cb;
1870 ah->env.info_cb_cls = ah;
1871 ah->env.bandwidth_changed_cb = &bandwidth_changed_cb;
1872 ah->env.bw_changed_cb_cls = ah;
1873 ah->env.get_preferences = &get_preferences_cb;
1874 ah->env.get_preference_cls = ah;
1875 ah->env.get_property = &get_property_cb;
1876 ah->env.get_property_cls = ah;
1878 ah->env.stats = stats;
1879 ah->env.addresses = ah->addresses;
1881 ah->env.network_count = GNUNET_ATS_NetworkTypeCount;
1882 int networks[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1883 for (c = 0; c < GNUNET_ATS_NetworkTypeCount; c++)
1885 ah->env.networks[c] = networks[c];
1886 ah->env.out_quota[c] = quotas_out[c];
1887 ah->env.in_quota[c] = quotas_in[c];
1890 switch (ah->ats_mode) {
1891 case MODE_PROPORTIONAL:
1892 plugin_short = "proportional";
1895 plugin_short = "mlp";
1898 plugin_short = "ril";
1901 plugin_short = NULL;
1904 GNUNET_asprintf (&ah->plugin,
1905 "libgnunet_plugin_ats_%s",
1907 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1908 _("Initializing solver `%s '`%s'\n"),
1911 if (NULL == (ah->solver = GNUNET_PLUGIN_load (ah->plugin, &ah->env)))
1913 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1914 _("Failed to initialize solver `%s'!\n"),
1919 GNUNET_assert (NULL != ah->env.sf.s_add);
1920 GNUNET_assert (NULL != ah->env.sf.s_address_update_inuse);
1921 GNUNET_assert (NULL != ah->env.sf.s_address_update_property);
1922 GNUNET_assert (NULL != ah->env.sf.s_address_update_session);
1923 GNUNET_assert (NULL != ah->env.sf.s_address_update_network);
1924 GNUNET_assert (NULL != ah->env.sf.s_get);
1925 GNUNET_assert (NULL != ah->env.sf.s_get_stop);
1926 GNUNET_assert (NULL != ah->env.sf.s_pref);
1927 GNUNET_assert (NULL != ah->env.sf.s_feedback);
1928 GNUNET_assert (NULL != ah->env.sf.s_del);
1929 GNUNET_assert (NULL != ah->env.sf.s_bulk_start);
1930 GNUNET_assert (NULL != ah->env.sf.s_bulk_stop);
1933 GAS_normalization_start (&normalized_preference_changed_cb, ah,
1934 &normalized_property_changed_cb, ah);
1936 if (NULL == ah->solver)
1938 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1939 _("Failed to initialize solver!\n"));
1943 /* up and running */
1944 ah->running = GNUNET_YES;
1946 GNUNET_STATISTICS_set (ah->stat, "# addresses",
1947 GNUNET_CONTAINER_multipeermap_size (ah->addresses), GNUNET_NO);
1954 * Destroy all addresses iterator
1957 * @param key peer identity (unused)
1958 * @param value the 'struct ATS_Address' to free
1959 * @return #GNUNET_OK (continue to iterate)
1962 destroy_all_address_it (void *cls,
1963 const struct GNUNET_PeerIdentity *key,
1966 struct GAS_Addresses_Handle *handle = cls;
1967 struct ATS_Address *aa = value;
1970 GNUNET_assert(GNUNET_YES ==
1971 GNUNET_CONTAINER_multipeermap_remove (handle->addresses, key, value));
1973 handle->env.sf.s_del (handle->solver, aa, GNUNET_NO);
1975 GAS_performance_notify_all_clients (&aa->peer,
1989 * Remove all addresses
1991 * @param handle the address handle to use
1994 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
1996 if (GNUNET_NO == handle->running)
1999 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2000 "Destroying all addresses\n");
2001 handle->env.sf.s_bulk_start (handle->solver);
2002 if (NULL != handle->addresses)
2003 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2004 &destroy_all_address_it,
2006 handle->env.sf.s_bulk_start (handle->solver);
2011 * Shutdown address subsystem.
2013 * @param handle the address handle to shutdown
2016 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
2018 struct GAS_Addresses_Suggestion_Requests *cur;
2019 struct GAS_Addresses_Preference_Clients *pcur;
2021 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Shutting down addresses\n");
2022 GNUNET_assert(NULL != handle);
2023 GAS_addresses_destroy_all (handle);
2024 handle->running = GNUNET_NO;
2025 GNUNET_CONTAINER_multipeermap_destroy (handle->addresses);
2026 handle->addresses = NULL;
2027 while (NULL != (cur = handle->pending_requests_head))
2029 GNUNET_CONTAINER_DLL_remove (handle->pending_requests_head,
2030 handle->pending_requests_tail,
2035 while (NULL != (pcur = handle->preference_clients_head))
2037 GNUNET_CONTAINER_DLL_remove (handle->preference_clients_head,
2038 handle->preference_clients_tail,
2040 GNUNET_assert (handle->pref_clients > 0);
2041 handle->pref_clients --;
2042 GNUNET_STATISTICS_set (handle->stat,
2043 "# active performance clients",
2044 handle->pref_clients,
2048 GNUNET_PLUGIN_unload (handle->plugin,
2050 GNUNET_free (handle->plugin);
2051 GNUNET_free(handle);
2052 /* Stop configured solution method */
2053 GAS_normalization_stop ();
2058 * Closure for #peerinfo_it().
2060 struct PeerInfoIteratorContext
2063 * Function to call for each address.
2065 GNUNET_ATS_PeerInfo_Iterator it;
2068 * Closure for @e it.
2075 * Iterator to iterate over a peer's addresses
2077 * @param cls a `struct PeerInfoIteratorContext`
2078 * @param key the peer id
2079 * @param value the `struct ATS_address`
2080 * @return #GNUNET_OK to continue
2083 peerinfo_it (void *cls,
2084 const struct GNUNET_PeerIdentity *key,
2087 struct PeerInfoIteratorContext *pi_ctx = cls;
2088 struct ATS_Address *addr = value;
2090 pi_ctx->it (pi_ctx->it_cls,
2096 addr->atsi, addr->atsi_count,
2097 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_out),
2098 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_in));
2104 * Return information all peers currently known to ATS
2106 * @param handle the address handle to use
2107 * @param peer the respective peer, NULL for 'all' peers
2108 * @param pi_it the iterator to call for every peer
2109 * @param pi_it_cls the closure for @a pi_it
2112 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
2113 const struct GNUNET_PeerIdentity *peer,
2114 GNUNET_ATS_PeerInfo_Iterator pi_it,
2117 struct PeerInfoIteratorContext pi_ctx;
2121 /* does not make sense without callback */
2125 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2126 "Returning information for %s from a total of %u known addresses\n",
2129 : GNUNET_i2s (peer),
2130 (unsigned int) GNUNET_CONTAINER_multipeermap_size (handle->addresses));
2132 pi_ctx.it_cls = pi_it_cls;
2134 GNUNET_CONTAINER_multipeermap_iterate (handle->addresses,
2138 GNUNET_CONTAINER_multipeermap_get_multiple (handle->addresses,
2140 &peerinfo_it, &pi_ctx);
2142 NULL, NULL, NULL, 0,
2149 /* end of gnunet-service-ats_addresses.c */