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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-service-ats.h"
30 #include "gnunet-service-ats_addresses.h"
31 #include "gnunet-service-ats_normalization.h"
32 #include "gnunet-service-ats_performance.h"
33 #include "gnunet-service-ats_scheduling.h"
34 #include "gnunet-service-ats_reservations.h"
36 #include "gnunet-service-ats-solver_mlp.h"
38 #include "gnunet-service-ats-solver_proportional.h"
41 * NOTE: Do not change this documentation. This documentation is based on
42 * gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
43 * use build_txt.sh to generate plaintext output
45 * 1 ATS addresses : ATS address management
47 * This ATS addresses ("addresses") component manages the addresses known to
48 * ATS service and suggests addresses to transport service when it is
49 * interested in address suggestion for a peer. ATS addresses also
50 * instantiates the bandwidth assignment mechanism (solver), notifies it
51 * about changes to addresses and forwards changes to bandwidth assignments
52 * to transport, depending if transport is interested in this change.
58 * Addresses are added by specifying peer ID, plugin, address, address length
59 * and session, if available. ATS information can be specified if available.
63 * ATS specifies a fix set of networks an address can belong to. For each
64 * network an inbound and outbound quota will be specified. The available
65 * networks and addtional helper varaibles are defined in
66 * gnunet_ats_service.h. At the moment 5 networks are defined:
67 * * GNUNET_ATS_NET_UNSPECIFIED
68 * * GNUNET_ATS_NET_LOOPBACK
69 * * GNUNET_ATS_NET_LAN
70 * * GNUNET_ATS_NET_WAN
71 * * GNUNET_ATS_NET_WLAN
73 * The total number of networks defined is stored in
74 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
75 * initializer for an int array, while GNUNET_ATS_NetworkType is an
76 * initializer for a char array containing a string description of all
81 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
82 * is loaded from ats configuration during initialization. This quota defines
83 * to total amount of inbound and outbound traffic allowed for a specific
84 * network. The configuration values used are in section ats:
85 * * "NETWORK"_QUOTA_IN = <value>
86 * * "NETWORK"_QUOTA_IN = <value>
88 * You can specify quotas by setting the <value> to a:
89 * * unrestricted: unlimited
90 * * number of bytes: e.g. 10240
91 * * fancy value: e.g. 64 Kib
93 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
94 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
96 * * GNUNET_ATS_DefaultBandwidth: 65536
97 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
98 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
100 * Details of loading quotas and default values will be described on
102 * 1.1.4 Preference values
104 * 1.2 Data structures used
106 * Addresse uses struct ATS_Address for each address. The structs are stored
107 * in a linked list and provides a pointer void *solver_information for the
108 * solver to store address specific information. It provides the int values
109 * active which is set to GNUNET_YES if the address is select for transport
110 * use and used, representing that transport service is actively using this
111 * address. Address information are stored in peer, addr, addr_len, plugin.
115 * During initialization a hashmap to store addresses is created. The quotas
116 * for all networks defined for ATS are loaded from configuration. For each
117 * network first the logic will check if the string
118 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
119 * the configured value as a fancy size and if this fails it will try to use
120 * it as a value_number. If no configuration value is found it will assign
121 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
122 * configured solver using configuration "[ats]:MODE". Current solvers are
123 * MODE_SIMPLISTIC, MODE_MLP. Interaction is done using a solver API
128 * * s_init: init the solver with required information
129 * * s_add: add a new address
130 * * s_update: update ATS values or session for an address
131 * * s_get: get prefered address for a peer
132 * * s_del: delete an address
133 * * s_pref: change preference value for a peer
134 * * s_done: shutdown solver
136 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
137 * solver which is called when bandwidth assigned to peer has changed
141 * During shutdown all addresses are freed and the solver told to shutdown
143 * 1.6 Addresses and sessions
145 * Addresses consist of the address itself and a numerical session. When a
146 * new address without a session is added it has no session, so it gets
147 * session 0 assigned. When an address with a session is added and an address
148 * object with session 0 is found, this object is updated with the session
149 * otherwise a new address object with this session assigned is created.
153 * Addresses a1,a2 with session s1, s2 are "exact" if:
154 * (a1 == a2)&&(s1 == s2)
155 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
156 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
158 * 1.7 Address management
160 * Transport service notifies ATS about changes to the addresses known to
163 * 1.7.1 Adding an address
165 * When transport learns a new address it tells ATS and ATS is telling
166 * addresses about it using GAS_address_add. If not known to addresses it
167 * creates a new address object and calls solver's s_add. ATS information are
168 * deserialized and solver is notified about the session and ATS information
171 * 1.7.2 Updating an address
173 * Addresses does an lookup up for the existing address with the given
174 * session. If disassembles included ATS information and notifies the solver
175 * using s_update about the update.
177 * 1.7.3 Deleting an address
179 * Addresses does an lookup for the exact address and session and if removes
180 * this address. If session != 0 the session is set to 0 and the address is
181 * kept. If session == 0, the addresses is removed.
183 * 1.7.4 Requesting an address suggestion
185 * The address client issues a request address message to be notified about
186 * address suggestions for a specific peer. Addresses asks the solver with
187 * s_get. If no address is available, it will not send a response, otherwise
188 * it will respond with the choosen address.
190 * 1.7.5 Address suggestions
192 * Addresses will notify the client automatically on any bandwidth_changed_cb
193 * by the solver if a address suggestion request is pending. If no address is
194 * available it will not respond at all If the client is not interested
195 * anymore, it has to cancel the address suggestion request.
197 * 1.7.6 Suggestions blocks and reset
199 * After suggesting an address it is blocked for ATS_BLOCKING_DELTA sec. to
200 * prevent the client from being thrashed. If the client requires immediately
201 * it can reset this block using GAS_addresses_handle_backoff_reset.
203 * 1.7.7 Marking address in use
205 * The client can notify addresses that it successfully uses an address and
206 * wants this address to be kept by calling GSA_address_in_use. Adresses will
207 * mark the address as used an notify the solver about the use.
209 * 1.7.8 Address lifecycle
212 * * (updated address) || (address in use)
215 * 1.8 Bandwidth assignment
217 * The addresses are used to perform resource allocation operations. ATS
218 * addresses takes care of instantiating the solver configured and notifies
219 * the respective solver about address changes and receives changes to the
220 * bandwidth assignment from the solver. The current bandwidth assignment is
221 * sent to transport. The specific solvers will be described in the specific
224 * 1.9 Changing peer preferences
226 * The bandwidth assigned to a peer can be influenced by setting a preference
227 * for a peer. The prefernce will be given to to the solver with s_pref which
228 * has to take care of the preference value
234 * Available ressource assignment modes
241 * Assign each peer an equal amount of bandwidth (bw)
243 * bw_per_peer = bw_total / #active addresses
250 * Solve ressource assignment as an optimization problem
251 * Uses an mixed integer programming solver
258 * Pending Address suggestion requests
260 struct GAS_Addresses_Suggestion_Requests
265 struct GAS_Addresses_Suggestion_Requests *next;
270 struct GAS_Addresses_Suggestion_Requests *prev;
275 struct GNUNET_PeerIdentity id;
280 * Handle for ATS address component
282 struct GAS_Addresses_Handle
287 struct GNUNET_STATISTICS_Handle *stat;
290 * A multihashmap to store all addresses
292 struct GNUNET_CONTAINER_MultiHashMap *addresses;
295 * Configure WAN quota in
297 unsigned long long wan_quota_in;
300 * Configure WAN quota out
302 unsigned long long wan_quota_out;
305 * Is ATS addresses running
310 * Configured ATS solver
320 * Address suggestion requests DLL head
322 struct GAS_Addresses_Suggestion_Requests *r_head;
325 * Address suggestion requests DLL tail
327 struct GAS_Addresses_Suggestion_Requests *r_tail;
329 /* Solver functions */
334 GAS_solver_init s_init;
337 * Add an address to the solver
339 GAS_solver_address_add s_add;
342 GAS_solver_address_property_changed s_address_update_property;
344 GAS_solver_address_session_changed s_address_update_session;
346 GAS_solver_address_inuse_changed s_address_update_inuse;
348 GAS_solver_address_network_changed s_address_update_network;
351 * Get address from solver
353 GAS_solver_get_preferred_address s_get;
356 * Get address from solver
358 GAS_solver_stop_get_preferred_address s_get_stop;
361 * Delete address in solver
363 GAS_solver_address_delete s_del;
366 * Change relative preference for quality in solver
368 GAS_solver_address_change_preference s_pref;
371 * Start a bulk operation
373 GAS_solver_bulk_start s_bulk_start;
376 * Bulk operation done
378 GAS_solver_bulk_stop s_bulk_stop;
383 GAS_solver_done s_done;
388 * Disassemble ATS information and update performance information in address
390 * Updates existing information and adds new information
392 * @param dest destination address
393 * @param update source ATS information
394 * @param update_count number of ATS information
395 * @param delta_dest ats performance information which were updated
396 * including previous value
397 * @param delta_count number of ATS information in the delta
398 * @return GNUNET_YES if address was address updated, GNUNET_NO otherwise
401 disassemble_ats_information (struct ATS_Address *dest,
402 const struct GNUNET_ATS_Information *update,
403 uint32_t update_count,
404 struct GNUNET_ATS_Information **delta_dest,
405 uint32_t *delta_count)
413 struct GNUNET_ATS_Information add_atsi[update_count];
414 struct GNUNET_ATS_Information delta_atsi[update_count];
415 struct GNUNET_ATS_Information *tmp_atsi;
416 uint32_t add_atsi_count;
417 uint32_t delta_atsi_count;
421 delta_atsi_count = 0;
423 if (0 == update_count)
426 if (NULL == dest->atsi)
428 /* Create performance information */
429 dest->atsi = GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
430 dest->atsi_count = update_count;
431 memcpy (dest->atsi, update, update_count * sizeof (struct GNUNET_ATS_Information));
432 delta_atsi_count = update_count;
433 (*delta_dest) = GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
434 for (c1 = 0; c1 < update_count; c1 ++)
436 (*delta_dest)[c1].type = update[c1].type;
437 (*delta_dest)[c1].value = htonl(GNUNET_ATS_VALUE_UNDEFINED);
439 (*delta_count) = update_count;
443 for (c1 = 0; c1 < update_count; c1++)
445 /* Update existing performance information */
447 for (c2 = 0; c2 < dest->atsi_count; c2++)
449 if (update[c1].type == dest->atsi[c2].type)
451 if (update[c1].value != dest->atsi[c2].value)
453 /* Save previous value in delta */
454 delta_atsi[delta_atsi_count] = dest->atsi[c2];
457 dest->atsi[c2].value = update[c1].value;
464 if (GNUNET_NO == found)
466 add_atsi[add_atsi_count] = update[c1];
468 delta_atsi[delta_atsi_count].type = update[c1].type;
469 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
474 if (add_atsi_count > 0)
476 /* Extend ats performance information */
478 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
479 (sizeof (struct GNUNET_ATS_Information)));
480 memcpy (tmp_atsi, dest->atsi, dest->atsi_count * sizeof (struct GNUNET_ATS_Information));
481 memcpy (&tmp_atsi[dest->atsi_count], add_atsi, add_atsi_count * sizeof (struct GNUNET_ATS_Information));
482 GNUNET_free (dest->atsi);
483 dest->atsi = tmp_atsi;
484 dest->atsi_count = dest->atsi_count + add_atsi_count;
488 if (delta_atsi_count > 0)
491 (*delta_dest) = GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
492 memcpy ((*delta_dest), delta_atsi, delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
493 (*delta_count) = delta_atsi_count;
500 * Free the given address
502 * @param addr address to destroy
505 free_address (struct ATS_Address *addr)
507 GNUNET_free (addr->plugin);
508 GNUNET_free_non_null (addr->atsi);
513 * Create a ATS_address with the given information
516 * @param plugin_name plugin
517 * @param plugin_addr address
518 * @param plugin_addr_len address length
519 * @param session_id session
520 * @return the ATS_Address
522 static struct ATS_Address *
523 create_address (const struct GNUNET_PeerIdentity *peer,
524 const char *plugin_name,
525 const void *plugin_addr, size_t plugin_addr_len,
528 struct ATS_Address *aa = NULL;
532 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
534 aa->addr_len = plugin_addr_len;
536 memcpy (&aa[1], plugin_addr, plugin_addr_len);
537 aa->plugin = GNUNET_strdup (plugin_name);
538 aa->session_id = session_id;
539 aa->active = GNUNET_NO;
540 aa->used = GNUNET_NO;
541 aa->solver_information = NULL;
544 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init(0);
545 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(0);
547 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1 ++)
549 aa->atsin[c1].avg_queue_index = 0;
550 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
551 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
558 struct CompareAddressContext
560 const struct ATS_Address *search;
562 /* exact_address != NULL if address and session is equal */
563 struct ATS_Address *exact_address;
564 /* exact_address != NULL if address and session is 0 */
565 struct ATS_Address *base_address;
571 * @param cls a CompareAddressContext containin the source address
573 * @param value the address to compare with
574 * @return GNUNET_YES to continue, GNUNET_NO if address is founce
578 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
580 struct CompareAddressContext *cac = cls;
581 struct ATS_Address *aa = value;
583 /* Find an matching exact address:
586 * aa->addr_len == cac->search->addr_len
587 * aa->plugin == cac->search->plugin
588 * aa->addr == cac->search->addr
589 * aa->session == cac->search->session
591 * return as exact address
593 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
595 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
596 cac->exact_address = aa;
599 /* Find an matching base address:
603 * aa->session_id == 0
606 * aa->addr_len == cac->search->addr_len
607 * aa->plugin == cac->search->plugin
608 * aa->addr == cac->search->addr
610 * return as base address
612 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
614 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
615 cac->base_address = aa;
618 /* Find an matching exact address based on session:
622 * cac->search->addr_len == 0
625 * aa->plugin == cac->search->plugin
626 * aa->session_id == cac->search->session_id
628 * return as exact address
630 if (0 == cac->search->addr_len)
632 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
633 cac->exact_address = aa;
636 if (cac->exact_address == NULL)
637 return GNUNET_YES; /* Continue iteration to find exact address */
639 return GNUNET_NO; /* Stop iteration since we have an exact address */
644 * Find an existing equivalent address record.
645 * Compares by peer identity and network address OR by session ID
646 * (one of the two must match).
648 * @param handle the address handle
649 * @param peer peer to lookup addresses for
650 * @param addr existing address record
651 * @return existing address record, NULL for none
654 find_equivalent_address (struct GAS_Addresses_Handle *handle,
655 const struct GNUNET_PeerIdentity *peer,
656 const struct ATS_Address *addr)
658 struct CompareAddressContext cac;
660 cac.exact_address = NULL;
661 cac.base_address = NULL;
663 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
664 &compare_address_it, &cac);
666 if (cac.exact_address == NULL)
667 return cac.base_address;
668 return cac.exact_address;
673 * Find the exact address
675 * @param handle the address handle to use
677 * @param plugin_name transport plugin name
678 * @param plugin_addr plugin address
679 * @param plugin_addr_len length of the plugin address
680 * @param session_id session id, can be 0
681 * @return an ATS_address or NULL
684 static struct ATS_Address *
685 find_exact_address (struct GAS_Addresses_Handle *handle,
686 const struct GNUNET_PeerIdentity *peer,
687 const char *plugin_name,
688 const void *plugin_addr,
689 size_t plugin_addr_len,
692 struct ATS_Address *aa;
693 struct ATS_Address *ea;
695 aa = create_address (peer,
697 plugin_addr, plugin_addr_len,
700 /* Get existing address or address with session == 0 */
701 ea = find_equivalent_address (handle, peer, aa);
705 else if (ea->session_id != session_id)
712 * Extract an ATS performance info from an address
714 * @param address the address
715 * @param type the type to extract in HBO
716 * @return the value in HBO or GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
719 get_performance_info (struct ATS_Address *address, uint32_t type)
722 GNUNET_assert (NULL != address);
724 if ((NULL == address->atsi) || (0 == address->atsi_count))
725 return GNUNET_ATS_VALUE_UNDEFINED;
727 for (c1 = 0; c1 < address->atsi_count; c1++)
729 if (ntohl(address->atsi[c1].type) == type)
730 return ntohl(address->atsi[c1].value);
732 return GNUNET_ATS_VALUE_UNDEFINED;
737 * Add a new address for a peer.
739 * @param handle the address handle to use
741 * @param plugin_name transport plugin name
742 * @param plugin_addr plugin address
743 * @param plugin_addr_len length of the plugin address
744 * @param session_id session id, can be 0
745 * @param atsi performance information for this address
746 * @param atsi_count number of performance information contained
749 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
750 const struct GNUNET_PeerIdentity *peer,
751 const char *plugin_name,
752 const void *plugin_addr,
753 size_t plugin_addr_len,
755 const struct GNUNET_ATS_Information *atsi,
758 struct ATS_Address *new_address;
759 struct ATS_Address *existing_address;
760 struct GNUNET_ATS_Information *atsi_delta;
761 uint32_t atsi_delta_count;
763 uint32_t previous_session;
766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
767 "Received `%s' for peer `%s'\n",
771 if (GNUNET_NO == handle->running)
774 GNUNET_assert (NULL != handle->addresses);
776 new_address = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
779 disassemble_ats_information (new_address, atsi, atsi_count, &atsi_delta, &atsi_delta_count);
780 GNUNET_free_non_null (atsi_delta);
781 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
782 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
783 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
785 /* Get existing address or address with session == 0 */
786 existing_address = find_equivalent_address (handle, peer, new_address);
787 if (existing_address == NULL)
789 /* Add a new address */
790 GNUNET_assert (GNUNET_OK ==
791 GNUNET_CONTAINER_multihashmap_put (handle->addresses,
792 &peer->hashPubKey, new_address,
793 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
795 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding new address %p for peer `%s' session id %u, %s\n",
796 new_address, GNUNET_i2s (peer), session_id, GNUNET_ATS_print_network_type(addr_net));
798 /* Tell solver about new address */
799 handle->s_add (handle->solver, new_address, addr_net);
801 handle->s_bulk_start (handle->solver);
802 GAS_normalization_normalize_property (handle->addresses, new_address, atsi, atsi_count);
803 handle->s_bulk_stop (handle->solver);
805 /* Notify performance clients about new address */
806 GAS_performance_notify_all_clients (&new_address->peer,
808 new_address->addr, new_address->addr_len,
809 new_address->session_id,
810 new_address->atsi, new_address->atsi_count,
811 new_address->assigned_bw_out,
812 new_address->assigned_bw_in);
816 /* We have an existing address we can use, clean up new */
817 GNUNET_free (new_address->plugin);
818 GNUNET_free_non_null (new_address->atsi);
819 GNUNET_free (new_address);
822 if (0 != existing_address->session_id)
824 /* Should not happen */
829 addr_net = get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE);
830 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
831 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
834 "Found existing address for peer `%s' %p with new session %u in network %s\n",
838 GNUNET_ATS_print_network_type (addr_net));
839 /* We have an address without an session, update this address */
841 atsi_delta_count = 0;
842 if (GNUNET_YES == disassemble_ats_information (existing_address, atsi, atsi_count, &atsi_delta, &atsi_delta_count))
844 /* Notify performance clients about properties */
845 GAS_performance_notify_all_clients (&existing_address->peer,
846 existing_address->plugin,
847 existing_address->addr, existing_address->addr_len,
848 existing_address->session_id,
849 existing_address->atsi, existing_address->atsi_count,
850 existing_address->assigned_bw_out,
851 existing_address->assigned_bw_in);
853 for (c1 = 0; c1 < atsi_delta_count; c1++)
855 if (GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
857 /* Network type changed */
859 handle->s_address_update_network (handle->solver, existing_address,
860 ntohl (atsi_delta[c1].value),
861 get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE));
862 addr_net = get_performance_info (existing_address, GNUNET_ATS_NETWORK_TYPE);
866 /* Notify solver about update with atsi information and session */
867 handle->s_bulk_start (handle->solver);
868 GAS_normalization_normalize_property (handle->addresses, existing_address, atsi, atsi_count);
869 handle->s_bulk_stop (handle->solver);
871 GNUNET_free_non_null (atsi_delta);
873 /* Notify solver about new session */
874 if (existing_address->session_id == session_id)
875 return; /* possible, can both be 0 since address is revalidated */
877 previous_session = existing_address->session_id;
878 existing_address->session_id = session_id;
879 handle->s_address_update_session (handle->solver, existing_address,
880 previous_session, session_id);
882 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
883 "Updated existing address for peer `%s' %p with new session %u in network %s\n",
887 GNUNET_ATS_print_network_type(addr_net));
892 * Update an address with a session or performance information for a peer.
894 * If an address was added without a session it will be updated with the
897 * @param handle the address handle to use
899 * @param plugin_name transport plugin name
900 * @param plugin_addr plugin address
901 * @param plugin_addr_len length of the plugin address
902 * @param session_id session id, can be 0
903 * @param atsi performance information for this address
904 * @param atsi_count number of performance information contained
907 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
908 const struct GNUNET_PeerIdentity *peer,
909 const char *plugin_name, const void *plugin_addr,
910 size_t plugin_addr_len, uint32_t session_id,
911 const struct GNUNET_ATS_Information *atsi,
914 struct ATS_Address *aa;
915 struct GNUNET_ATS_Information *atsi_delta;
916 uint32_t atsi_delta_count;
917 uint32_t prev_session;
920 if (GNUNET_NO == handle->running)
923 GNUNET_assert (NULL != handle->addresses);
925 /* Get existing address */
926 aa = find_exact_address (handle, peer, plugin_name,
927 plugin_addr, plugin_addr_len, session_id);
930 /* GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n", */
931 /* GNUNET_i2s (peer), plugin_name, session_id); */
932 /* GNUNET_break (0); */
936 if (NULL == aa->solver_information)
938 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n",
939 GNUNET_i2s (peer), plugin_name, session_id);
943 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
944 "Received `%s' for peer `%s' address \n",
946 GNUNET_i2s (peer), aa);
949 if (session_id != aa->session_id)
951 /* Session changed */
952 prev_session = aa->session_id;
953 aa->session_id = session_id;
954 handle->s_address_update_session (handle->solver, aa, prev_session, aa->session_id);
958 atsi_delta_count = 0;
959 if (GNUNET_YES == disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta, &atsi_delta_count))
961 /* ATS properties changed */
962 for (c1 = 0; c1 < atsi_delta_count; c1++)
964 if (GNUNET_ATS_NETWORK_TYPE == ntohl (atsi_delta[c1].type))
966 /* Network type changed */
967 handle->s_address_update_network (handle->solver, aa,
968 ntohl (atsi_delta[c1].value),
969 get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE));
973 /* Notify performance clients about updated address */
974 GAS_performance_notify_all_clients (&aa->peer,
976 aa->addr, aa->addr_len,
978 aa->atsi, aa->atsi_count,
982 handle->s_bulk_start (handle->solver);
983 GAS_normalization_normalize_property (handle->addresses, aa, atsi, atsi_count);
984 handle->s_bulk_stop (handle->solver);
986 GNUNET_free_non_null (atsi_delta);
990 struct DestroyContext
992 struct ATS_Address *aa;
994 struct GAS_Addresses_Handle *handle;
997 * GNUNET_NO : full address
998 * GNUNET_YES : just session
1007 * If session != 0, just the session is deleted, the address itself still exists
1008 * If session == 0, remove full address
1009 * If session == 0 and addrlen == 0, destroy inbound address
1013 * @param value the 'struct ATS_Address'
1014 * @return GNUNET_OK (continue to iterate)
1017 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
1019 struct DestroyContext *dc = cls;
1020 struct GAS_Addresses_Handle *handle = dc->handle;
1021 const struct ATS_Address *des = dc->aa;
1022 struct ATS_Address *aa = value;
1024 GNUNET_assert (0 == memcmp (&aa->peer, &des->peer,
1025 sizeof (struct GNUNET_PeerIdentity)));
1028 if (des->session_id == 0)
1030 /* Session == 0, remove full address */
1031 if ((0 == strcmp (des->plugin, aa->plugin)) &&
1032 (aa->addr_len == des->addr_len) &&
1033 (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
1036 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1037 "Deleting full address for peer `%s' session %u %p\n",
1038 GNUNET_i2s (&aa->peer), aa->session_id, aa);
1040 /* Notify solver about deletion */
1041 GNUNET_assert (GNUNET_YES ==
1042 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
1043 &aa->peer.hashPubKey, aa));
1044 handle->s_del (handle->solver, aa, GNUNET_NO);
1046 dc->result = GNUNET_NO;
1047 return GNUNET_OK; /* Continue iteration */
1052 /* Session != 0, just remove session */
1053 if (aa->session_id != des->session_id)
1054 return GNUNET_OK; /* irrelevant */
1056 if ((aa->session_id != 0) &&
1057 (0 != strcmp (des->plugin, aa->plugin)))
1059 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1060 "Different plugins during removal: `%s' vs `%s' \n",
1061 des->plugin, aa->plugin);
1066 if (aa->addr_len == 0)
1068 /* Inbound connection died, delete full address */
1069 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1070 "Deleting inbound address for peer `%s': `%s' session %u\n",
1071 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1073 /* Notify solver about deletion */
1074 GNUNET_assert (GNUNET_YES ==
1075 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
1076 &aa->peer.hashPubKey, aa));
1077 handle->s_del (handle->solver, aa, GNUNET_NO);
1079 dc->result = GNUNET_NO;
1080 return GNUNET_OK; /* Continue iteration */
1085 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1086 "Deleting session for peer `%s': `%s' %u\n",
1087 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1088 /* Notify solver to delete session */
1089 handle->s_del (handle->solver, aa, GNUNET_YES);
1099 * Remove an address or just a session for a peer.
1101 * @param handle the address handle to use
1103 * @param plugin_name transport plugin name
1104 * @param plugin_addr plugin address
1105 * @param plugin_addr_len length of the plugin address
1106 * @param session_id session id, can be 0
1109 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1110 const struct GNUNET_PeerIdentity *peer,
1111 const char *plugin_name,
1112 const void *plugin_addr,
1113 size_t plugin_addr_len,
1114 uint32_t session_id)
1116 struct ATS_Address *ea;
1117 struct DestroyContext dc;
1118 if (GNUNET_NO == handle->running)
1121 /* Get existing address */
1122 ea = find_exact_address (handle, peer, plugin_name, plugin_addr,
1123 plugin_addr_len, session_id);
1126 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1127 GNUNET_i2s (peer), plugin_name, session_id);
1131 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1132 "Received `%s' for peer `%s' address %p session %u\n",
1134 GNUNET_i2s (peer), ea, session_id);
1136 GNUNET_break (0 < strlen (plugin_name));
1138 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
1140 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
1141 &destroy_by_session_id, &dc);
1142 free_address (dc.aa);
1147 * Notification about active use of an address.
1148 * in_use == GNUNET_YES:
1149 * This address is used to maintain an active connection with a peer.
1150 * in_use == GNUNET_NO:
1151 * This address is no longer used to maintain an active connection with a peer.
1153 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1156 * @param handle the address handle to use
1158 * @param plugin_name transport plugin name
1159 * @param plugin_addr plugin address
1160 * @param plugin_addr_len length of the plugin address
1161 * @param session_id session id, can be 0
1162 * @param in_use GNUNET_YES if GNUNET_NO
1163 * @return GNUNET_SYSERR on failure (address unknown ...)
1166 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1167 const struct GNUNET_PeerIdentity *peer,
1168 const char *plugin_name,
1169 const void *plugin_addr,
1170 size_t plugin_addr_len,
1171 uint32_t session_id,
1174 struct ATS_Address *ea;
1175 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1176 "Received `%s' for peer `%s'\n",
1180 if (GNUNET_NO == handle->running)
1181 return GNUNET_SYSERR;
1183 ea = find_exact_address (handle, peer, plugin_name,
1184 plugin_addr, plugin_addr_len, session_id);
1187 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1188 "Trying to set unknown address `%s', %s %u %s \n",
1190 plugin_name, session_id,
1191 (GNUNET_NO == in_use) ? "NO" : "YES");
1193 return GNUNET_SYSERR;
1195 if (ea->used == in_use)
1198 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1199 "Address in use called multiple times for peer `%s': %s -> %s \n",
1201 (GNUNET_NO == ea->used) ? "NO" : "YES",
1202 (GNUNET_NO == in_use) ? "NO" : "YES");
1203 return GNUNET_SYSERR;
1206 /* Tell solver about update */
1208 handle->s_address_update_inuse (handle->solver, ea, ea->used);
1214 * Cancel address suggestions for a peer
1216 * @param handle the address handle
1217 * @param peer the peer id
1220 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1221 const struct GNUNET_PeerIdentity *peer)
1223 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1225 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1226 "Received request: `%s' for peer %s\n", "request_address_cancel", GNUNET_i2s (peer));
1230 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1237 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1238 "No address requests pending for peer `%s', cannot remove!\n", GNUNET_i2s (peer));
1241 handle->s_get_stop (handle->solver, peer);
1242 GAS_addresses_handle_backoff_reset (handle, peer);
1243 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1244 "Removed request pending for peer `%s\n", GNUNET_i2s (peer));
1245 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1251 * Request address suggestions for a peer
1253 * @param handle the address handle
1254 * @param peer the peer id
1257 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1258 const struct GNUNET_PeerIdentity *peer)
1260 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1261 struct ATS_Address *aa;
1263 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1264 "Received `%s' for peer `%s'\n",
1268 if (GNUNET_NO == handle->running)
1272 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1273 break; /* already suggesting */
1278 cur = GNUNET_malloc (sizeof (struct GAS_Addresses_Suggestion_Requests));
1280 GNUNET_CONTAINER_DLL_insert (handle->r_head, handle->r_tail, cur);
1283 /* Get prefered address from solver */
1284 aa = (struct ATS_Address *) handle->s_get (handle->solver, peer);
1287 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1288 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
1292 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1293 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
1295 GAS_scheduling_transmit_address_suggestion (peer,
1297 aa->addr, aa->addr_len,
1299 aa->atsi, aa->atsi_count,
1300 aa->assigned_bw_out,
1301 aa->assigned_bw_in);
1303 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
1304 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get(), aa->block_interval);
1306 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1307 "Address %p ready for suggestion, block interval now %llu \n",
1308 aa, aa->block_interval);
1313 * Iterator to reset address blocking
1315 * @param cls not used
1316 * @param key the peer
1317 * @param value the address to reset
1318 * @return GNUNET_OK to continue
1321 reset_address_it (void *cls, const struct GNUNET_HashCode *key, void *value)
1323 struct ATS_Address *aa = value;
1325 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1326 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1327 GNUNET_i2s (&aa->peer), aa, aa->block_interval);
1329 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1330 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1336 * Reset suggestion backoff for a peer
1338 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1339 * reset using this function
1341 * @param handle the address handle
1342 * @param peer the peer id
1345 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1346 const struct GNUNET_PeerIdentity *peer)
1348 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1349 "Received `%s' for peer `%s'\n",
1353 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses,
1361 * The preference changed for a peer
1363 * @param cls the address handle
1364 * @param peer the peer
1365 * @param kind the ATS kind
1366 * @param pref_rel the new relative preference value
1369 normalized_preference_changed_cb (void *cls,
1370 const struct GNUNET_PeerIdentity *peer,
1371 enum GNUNET_ATS_PreferenceKind kind,
1374 GNUNET_assert (NULL != cls);
1375 struct GAS_Addresses_Handle *handle = cls;
1376 /* Tell solver about update */
1377 handle->s_pref (handle->solver, peer, kind, pref_rel);
1382 * The relative value for a property changed
1384 * @param cls the address handle
1385 * @param address the peer
1386 * @param type the ATS type
1387 * @param prop_rel the new relative preference value
1390 normalized_property_changed_cb (void *cls,
1391 struct ATS_Address *address,
1395 struct GAS_Addresses_Handle *ah = (struct GAS_Addresses_Handle *) cls;
1396 GNUNET_assert (NULL != ah);
1398 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1399 "Normalized property %s for peer `%s' changed to %.3f \n",
1400 GNUNET_ATS_print_property_type (type),
1401 GNUNET_i2s (&address->peer),
1404 ah->s_address_update_property (ah->solver,
1413 * Function allowing the solver to obtain normalized preference
1414 * values from solver
1417 * @param id the peer to return the normalized properties for
1418 * @return array of double values with |GNUNET_ATS_PreferenceCount| elements
1421 get_preferences_cb (void *cls, const struct GNUNET_PeerIdentity *id)
1423 return GAS_normalization_get_preferences (id);
1427 * Function allowing the solver to obtain normalized property
1428 * values for an address from solver
1431 * @param address the address
1432 * @return array of double values with |GNUNET_ATS_QualityPropertiesCount| elements
1435 get_property_cb (void *cls, const struct ATS_Address *address)
1437 return GAS_normalization_get_properties ((struct ATS_Address *) address);
1441 * Change the preference for a peer
1443 * @param handle the address handle
1444 * @param client the client sending this request
1445 * @param peer the peer id
1446 * @param kind the preference kind to change
1447 * @param score_abs the new preference score
1450 GAS_addresses_change_preference (struct GAS_Addresses_Handle *handle,
1452 const struct GNUNET_PeerIdentity *peer,
1453 enum GNUNET_ATS_PreferenceKind kind,
1456 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1457 "Received `%s' for peer `%s' for client %p\n",
1458 "CHANGE PREFERENCE",
1459 GNUNET_i2s (peer), client);
1461 if (GNUNET_NO == handle->running)
1464 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->addresses,
1467 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1468 "Received `%s' for unknown peer `%s' from client %p\n",
1469 "CHANGE PREFERENCE",
1470 GNUNET_i2s (peer), client);
1474 handle->s_bulk_start (handle->solver);
1475 /* Tell normalization about change, normalization will call callback if preference changed */
1476 GAS_normalization_normalize_preference (client, peer, kind, score_abs);
1477 handle->s_bulk_stop (handle->solver);
1482 * Load quotas for networks from configuration
1484 * @param cfg configuration handle
1485 * @param out_dest where to write outbound quotas
1486 * @param in_dest where to write inbound quotas
1487 * @param dest_length length of inbound and outbound arrays
1488 * @return number of networks loaded
1491 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1493 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1494 char * entry_in = NULL;
1495 char * entry_out = NULL;
1496 char * quota_out_str;
1497 char * quota_in_str;
1501 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1505 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1506 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1509 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
1512 if (0 == strcmp(quota_out_str, GNUNET_ATS_MaxBandwidthString))
1514 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1517 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, &out_dest[c])))
1519 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out, &out_dest[c])))
1522 if (GNUNET_NO == res)
1524 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1525 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1526 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1530 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Outbound quota configure for network `%s' is %llu\n"),
1531 network_str[c], out_dest[c]);
1533 GNUNET_free (quota_out_str);
1537 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1538 network_str[c], GNUNET_ATS_DefaultBandwidth);
1539 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1543 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
1546 if (0 == strcmp(quota_in_str, GNUNET_ATS_MaxBandwidthString))
1548 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1551 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1553 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in, &in_dest[c])))
1556 if (GNUNET_NO == res)
1558 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1559 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
1560 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1564 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Inbound quota configured for network `%s' is %llu\n"),
1565 network_str[c], in_dest[c]);
1567 GNUNET_free (quota_in_str);
1571 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1572 network_str[c], GNUNET_ATS_DefaultBandwidth);
1573 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1575 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loaded quota for network `%s' (in/out): %llu %llu\n", network_str[c], in_dest[c], out_dest[c]);
1576 GNUNET_free (entry_out);
1577 GNUNET_free (entry_in);
1579 return GNUNET_ATS_NetworkTypeCount;
1584 * Callback for solver to notify about assignment changes
1586 * @param cls the GAS_Addresses_Handle
1587 * @param address the address with changes
1590 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1592 struct GAS_Addresses_Handle *handle = cls;
1593 struct GAS_Addresses_Suggestion_Requests *cur;
1595 GNUNET_assert (handle != NULL);
1596 GNUNET_assert (address != NULL);
1598 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Bandwidth assignment changed for peer %s \n", GNUNET_i2s(&address->peer));
1600 /* Notify performance clients about changes to address */
1601 GAS_performance_notify_all_clients (&address->peer,
1603 address->addr, address->addr_len,
1604 address->session_id,
1605 address->atsi, address->atsi_count,
1606 address->assigned_bw_out,
1607 address->assigned_bw_in);
1608 cur = handle->r_head;
1611 if (0 == memcmp (&address->peer, &cur->id, sizeof (cur->id)))
1612 break; /* we have an address request pending*/
1617 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1618 "Nobody is interested in peer `%s' :(\n",GNUNET_i2s (&address->peer));
1622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1623 "Sending bandwidth update for peer `%s'\n",GNUNET_i2s (&address->peer));
1625 /* *Notify scheduling clients about suggestion */
1626 GAS_scheduling_transmit_address_suggestion (&address->peer,
1628 address->addr, address->addr_len,
1629 address->session_id,
1630 address->atsi, address->atsi_count,
1631 address->assigned_bw_out,
1632 address->assigned_bw_in);
1637 * Initialize address subsystem. The addresses subsystem manages the addresses
1638 * known and current performance information. It has a solver component
1639 * responsible for the resource allocation. It tells the solver about changes
1640 * and receives updates when the solver changes the ressource allocation.
1642 * @param cfg configuration to use
1643 * @param stats the statistics handle to use
1644 * @return an address handle
1646 struct GAS_Addresses_Handle *
1647 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1648 const struct GNUNET_STATISTICS_Handle *stats)
1650 struct GAS_Addresses_Handle *ah;
1651 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1652 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1653 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1658 ah = GNUNET_malloc (sizeof (struct GAS_Addresses_Handle));
1659 ah->running = GNUNET_NO;
1661 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1662 /* Initialize the addresses database */
1663 ah->addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1664 GNUNET_assert (NULL != ah->addresses);
1666 /* Figure out configured solution method */
1667 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1669 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1670 ah->ats_mode = MODE_SIMPLISTIC;
1674 for (c = 0; c < strlen (mode_str); c++)
1675 mode_str[c] = toupper (mode_str[c]);
1676 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1678 ah->ats_mode = MODE_SIMPLISTIC;
1680 else if (0 == strcmp (mode_str, "MLP"))
1682 ah->ats_mode = MODE_MLP;
1684 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1685 ah->ats_mode = MODE_SIMPLISTIC;
1690 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1691 ah->ats_mode = MODE_SIMPLISTIC;
1693 GNUNET_free (mode_str);
1695 /* Start configured solution method */
1696 switch (ah->ats_mode)
1699 /* Init the MLP solver with default values */
1701 ah->ats_mode = MODE_MLP;
1702 ah->s_init = &GAS_mlp_init;
1703 ah->s_add = &GAS_mlp_address_add;
1704 ah->s_address_update_property = &GAS_mlp_address_property_changed;
1705 ah->s_address_update_session = &GAS_mlp_address_session_changed;
1706 ah->s_address_update_inuse = &GAS_mlp_address_inuse_changed;
1707 ah->s_address_update_network = &GAS_mlp_address_change_network;
1708 ah->s_get = &GAS_mlp_get_preferred_address;
1709 ah->s_get_stop = &GAS_mlp_stop_get_preferred_address;
1710 ah->s_pref = &GAS_mlp_address_change_preference;
1711 ah->s_del = &GAS_mlp_address_delete;
1712 ah->s_bulk_start = &GAS_mlp_bulk_start;
1713 ah->s_bulk_stop = &GAS_mlp_bulk_stop;
1714 ah->s_done = &GAS_mlp_done;
1720 case MODE_SIMPLISTIC:
1721 /* Init the simplistic solver with default values */
1722 ah->ats_mode = MODE_SIMPLISTIC;
1723 ah->s_init = &GAS_proportional_init;
1724 ah->s_add = &GAS_proportional_address_add;
1725 ah->s_address_update_property = &GAS_proportional_address_property_changed;
1726 ah->s_address_update_session = &GAS_proportional_address_session_changed;
1727 ah->s_address_update_inuse = &GAS_proportional_address_inuse_changed;
1728 ah->s_address_update_network = &GAS_proportional_address_change_network;
1729 ah->s_get = &GAS_proportional_get_preferred_address;
1730 ah->s_get_stop = &GAS_proportional_stop_get_preferred_address;
1731 ah->s_pref = &GAS_proportional_address_change_preference;
1732 ah->s_del = &GAS_proportional_address_delete;
1733 ah->s_bulk_start = &GAS_proportional_bulk_start;
1734 ah->s_bulk_stop = &GAS_proportional_bulk_stop;
1735 ah->s_done = &GAS_proportional_done;
1736 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1743 GNUNET_assert (NULL != ah->s_init);
1744 GNUNET_assert (NULL != ah->s_add);
1745 GNUNET_assert (NULL != ah->s_address_update_inuse);
1746 GNUNET_assert (NULL != ah->s_address_update_property);
1747 GNUNET_assert (NULL != ah->s_address_update_session);
1748 GNUNET_assert (NULL != ah->s_address_update_network);
1749 GNUNET_assert (NULL != ah->s_get);
1750 GNUNET_assert (NULL != ah->s_get_stop);
1751 GNUNET_assert (NULL != ah->s_pref);
1752 GNUNET_assert (NULL != ah->s_del);
1753 GNUNET_assert (NULL != ah->s_done);
1754 GNUNET_assert (NULL != ah->s_bulk_start);
1755 GNUNET_assert (NULL != ah->s_bulk_stop);
1757 GAS_normalization_start (&normalized_preference_changed_cb, ah,
1758 &normalized_property_changed_cb, ah);
1759 quota_count = load_quotas(cfg, quotas_in, quotas_out, GNUNET_ATS_NetworkTypeCount);
1761 ah->solver = ah->s_init (cfg, stats, ah->addresses,
1762 quotas, quotas_in, quotas_out, quota_count,
1763 &bandwidth_changed_cb, ah,
1764 &get_preferences_cb, NULL,
1765 &get_property_cb, NULL);
1766 if (NULL == ah->solver)
1768 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to initialize solver!\n"));
1773 /* up and running */
1774 ah->running = GNUNET_YES;
1780 * Destroy all addresses iterator
1783 * @param key peer identity (unused)
1784 * @param value the 'struct ATS_Address' to free
1785 * @return GNUNET_OK (continue to iterate)
1788 destroy_all_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1790 struct GAS_Addresses_Handle *handle = cls;
1791 struct ATS_Address *aa = value;
1794 GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->addresses, key, value));
1796 handle->s_del (handle->solver, aa, GNUNET_NO);
1805 * Remove all addresses
1807 * @param handle the address handle to use
1810 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
1812 if (GNUNET_NO == handle->running)
1815 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1818 if (handle->addresses != NULL)
1819 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &destroy_all_address_it, handle);
1824 * Shutdown address subsystem.
1826 * @param handle the address handle to shutdown
1829 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
1831 struct GAS_Addresses_Suggestion_Requests *cur;
1833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1834 "Shutting down addresses\n");
1835 GNUNET_assert (NULL != handle);
1836 GAS_addresses_destroy_all (handle);
1837 handle->running = GNUNET_NO;
1838 GNUNET_CONTAINER_multihashmap_destroy (handle->addresses);
1839 handle->addresses = NULL;
1840 while (NULL != (cur = handle->r_head))
1842 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1845 handle->s_done (handle->solver);
1846 GNUNET_free (handle);
1847 /* Stop configured solution method */
1848 GAS_normalization_stop ();
1852 struct PeerIteratorContext
1854 GNUNET_ATS_Peer_Iterator it;
1856 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1861 * Iterator to iterate over all peers
1863 * @param cls a PeerIteratorContext
1864 * @param key the peer id
1865 * @param value the ATS_address
1866 * @return GNUNET_OK to continue
1870 const struct GNUNET_HashCode * key,
1873 struct PeerIteratorContext *ip_ctx = cls;
1874 struct GNUNET_PeerIdentity tmp;
1876 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1878 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1879 tmp.hashPubKey = (*key);
1880 ip_ctx->it (ip_ctx->it_cls, &tmp);
1888 * Return information all peers currently known to ATS
1890 * @param handle the address handle to use
1891 * @param p_it the iterator to call for every peer
1892 * @param p_it_cls the closure for the iterator
1895 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
1896 GNUNET_ATS_Peer_Iterator p_it,
1899 struct PeerIteratorContext ip_ctx;
1904 GNUNET_assert (NULL != handle->addresses);
1906 size = GNUNET_CONTAINER_multihashmap_size(handle->addresses);
1910 ip_ctx.it_cls = p_it_cls;
1911 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1912 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &peer_it, &ip_ctx);
1913 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1915 p_it (p_it_cls, NULL);
1919 struct PeerInfoIteratorContext
1921 GNUNET_ATS_PeerInfo_Iterator it;
1927 * Iterator to iterate over a peer's addresses
1929 * @param cls a PeerInfoIteratorContext
1930 * @param key the peer id
1931 * @param value the ATS_address
1932 * @return GNUNET_OK to continue
1935 peerinfo_it (void *cls,
1936 const struct GNUNET_HashCode * key,
1939 struct PeerInfoIteratorContext *pi_ctx = cls;
1940 struct ATS_Address *addr = (struct ATS_Address *) value;
1942 if (NULL != pi_ctx->it)
1944 pi_ctx->it (pi_ctx->it_cls,
1947 addr->addr, addr->addr_len,
1949 addr->atsi, addr->atsi_count,
1950 addr->assigned_bw_out,
1951 addr->assigned_bw_in);
1958 * Return information all peers currently known to ATS
1960 * @param handle the address handle to use
1961 * @param peer the respective peer
1962 * @param pi_it the iterator to call for every peer
1963 * @param pi_it_cls the closure for the iterator
1966 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
1967 const struct GNUNET_PeerIdentity *peer,
1968 GNUNET_ATS_PeerInfo_Iterator pi_it,
1971 struct PeerInfoIteratorContext pi_ctx;
1972 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1973 GNUNET_assert (NULL != peer);
1974 GNUNET_assert (NULL != handle->addresses);
1976 return; /* does not make sense without callback */
1978 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1980 pi_ctx.it_cls = pi_it_cls;
1982 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1985 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1990 /* end of gnunet-service-ats_addresses.c */