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21 * @file ats/plugin_ats_proportional.c
22 * @brief ATS proportional solver
23 * @author Matthias Wachs
24 * @author Christian Grothoff
27 #include "gnunet_statistics_service.h"
28 #include "gnunet_ats_service.h"
29 #include "gnunet_ats_plugin.h"
30 #include "gnunet-service-ats_addresses.h"
32 #define LOG(kind,...) GNUNET_log_from (kind, "ats-proportional",__VA_ARGS__)
35 * How much do we value stability over adaptation by default. A low
36 * value (close to 1.0) means we adapt as soon as possible, a larger
37 * value means that we have to have the respective factor of an
38 * advantage (or delay) before we adapt and sacrifice stability.
40 #define PROP_STABILITY_FACTOR 1.25
44 * Default value to assume for the proportionality factor, if none is
45 * given in the configuration. This factor determines how strong the
46 * bandwidth allocation will orient itself on the application
47 * preferences. A lower factor means a more balanced bandwidth
48 * distribution while a larger number means a distribution more in
49 * line with application (bandwidth) preferences.
51 #define PROPORTIONALITY_FACTOR 2.0
55 * Address information stored for the proportional solver in the
56 * `solver_information` member of `struct GNUNET_ATS_Address`.
58 * They are also stored in the respective `struct Network`'s linked
66 struct AddressWrapper *next;
71 struct AddressWrapper *prev;
76 struct ATS_Address *addr;
79 * Network scope this address is in
81 struct Network *network;
86 uint32_t calculated_quota_in;
91 uint32_t calculated_quota_out;
94 * When was this address activated
96 struct GNUNET_TIME_Absolute activated;
102 * Representation of a network
107 * Network description
112 * String for statistics total addresses
117 * String for statistics active addresses
122 * Linked list of addresses in this network: head
124 struct AddressWrapper *head;
127 * Linked list of addresses in this network: tail
129 struct AddressWrapper *tail;
132 * Total inbound quota
134 unsigned long long total_quota_in;
137 * Total outbound quota
139 unsigned long long total_quota_out;
144 enum GNUNET_ATS_Network_Type type;
147 * Number of active addresses for this network
149 unsigned int active_addresses;
152 * Number of total addresses for this network
154 unsigned int total_addresses;
160 * A handle for the proportional solver
162 struct GAS_PROPORTIONAL_Handle
166 * Our execution environment.
168 struct GNUNET_ATS_PluginEnvironment *env;
173 struct Network *network_entries;
176 * Proportionality factor
183 double stability_factor;
186 * Bulk lock counter. If zero, we are not locked.
188 unsigned int bulk_lock;
191 * Number of changes made while solver was locked. We really only
192 * use 0/non-zero to check on unlock if we have to run the update.
194 unsigned int bulk_requests;
197 * Number of active addresses for solver
199 unsigned int active_addresses;
205 * Test if bandwidth is available in this network to add an additional address.
207 * @param net the network type to check
208 * @param extra for how many extra addresses do we check?
209 * @return #GNUNET_YES or #GNUNET_NO
212 is_bandwidth_available_in_network (struct Network *net,
216 uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
218 GNUNET_assert (((int)net->active_addresses) + extra >= 0);
219 na = net->active_addresses + extra;
222 if ( ((net->total_quota_in / na) > min_bw) &&
223 ((net->total_quota_out / na) > min_bw) )
230 * Test if all peers in this network require connectivity at level at
233 * @param s the solver handle
234 * @param net the network type to check
235 * @param con connection return value threshold to check
236 * @return #GNUNET_YES or #GNUNET_NO
239 all_require_connectivity (struct GAS_PROPORTIONAL_Handle *s,
243 struct AddressWrapper *aw;
245 for (aw = net->head; NULL != aw; aw = aw->next)
247 s->env->get_connectivity (s->env->cls,
255 * Update bandwidth assigned to peers in this network. The basic idea
256 * is to assign every peer in the network the minimum bandwidth, and
257 * then distribute the remaining bandwidth proportional to application
260 * @param s the solver handle
261 * @param net the network type to update
264 distribute_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
267 const uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
268 struct AddressWrapper *aw;
269 unsigned long long remaining_quota_in;
270 unsigned long long quota_out_used;
271 unsigned long long remaining_quota_out;
272 unsigned long long quota_in_used;
273 unsigned int count_addresses;
274 double sum_relative_peer_prefences;
277 const double *peer_relative_prefs;
279 LOG (GNUNET_ERROR_TYPE_INFO,
280 "Recalculate quota for network type `%s' for %u addresses (in/out): %llu/%llu \n",
282 net->active_addresses,
284 net->total_quota_in);
286 if (0 == net->active_addresses)
287 return; /* no addresses to update */
290 if ((net->active_addresses * min_bw) > net->total_quota_in)
295 if ((net->active_addresses * min_bw) > net->total_quota_out)
301 /* Calculate sum of relative preference for active addresses in this
303 sum_relative_peer_prefences = 0.0;
305 for (aw = net->head; NULL != aw; aw = aw->next)
307 if (GNUNET_YES != aw->addr->active)
309 peer_relative_prefs = s->env->get_preferences (s->env->cls,
311 sum_relative_peer_prefences
312 += peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
315 if (count_addresses != net->active_addresses)
318 LOG (GNUNET_ERROR_TYPE_WARNING,
319 "%s: Counted %u active addresses, expected %u active addresses\n",
322 net->active_addresses);
324 net->active_addresses = count_addresses;
326 LOG (GNUNET_ERROR_TYPE_INFO,
327 "Total relative preference %.3f for %u addresses in network %s\n",
328 sum_relative_peer_prefences,
329 net->active_addresses,
332 /* check how much we have to distribute */
333 remaining_quota_in = net->total_quota_in - (net->active_addresses * min_bw);
334 remaining_quota_out = net->total_quota_out - (net->active_addresses * min_bw);
335 LOG (GNUNET_ERROR_TYPE_DEBUG,
336 "Proportionally distributable bandwidth (in/out): %llu/%llu\n",
338 remaining_quota_out);
340 /* distribute remaining quota; we do not do it exactly proportional,
341 but balance "even" distribution ("net->active_addresses") with
342 the preference sum using the "prop_factor". */
343 total_weight = net->active_addresses +
344 s->prop_factor * sum_relative_peer_prefences;
347 for (aw = net->head; NULL != aw; aw = aw->next)
349 if (GNUNET_YES != aw->addr->active)
351 /* set to 0, just to be sure */
352 aw->calculated_quota_in = 0;
353 aw->calculated_quota_out = 0;
356 peer_relative_prefs = s->env->get_preferences (s->env->cls,
359 + s->prop_factor * peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
361 aw->calculated_quota_in = min_bw
362 + (peer_weight / total_weight) * remaining_quota_in;
363 aw->calculated_quota_out = min_bw
364 + (peer_weight / total_weight) * remaining_quota_out;
366 LOG (GNUNET_ERROR_TYPE_INFO,
367 "New quotas for peer `%s' with weight (cur/total) %.3f/%.3f (in/out) are: %u/%u\n",
368 GNUNET_i2s (&aw->addr->peer),
371 (unsigned int) aw->calculated_quota_in,
372 (unsigned int) aw->calculated_quota_out);
373 quota_in_used += aw->calculated_quota_in;
374 quota_out_used += aw->calculated_quota_out;
376 LOG (GNUNET_ERROR_TYPE_DEBUG,
377 "Total bandwidth assigned is (in/out): %llu /%llu\n",
380 /* +1 due to possible rounding errors */
381 GNUNET_break (quota_out_used <= net->total_quota_out + 1);
382 GNUNET_break (quota_in_used <= net->total_quota_in + 1);
387 * Notify ATS service of bandwidth changes to addresses.
389 * @param s solver handle
390 * @param net the network to propagate changes in
393 propagate_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
396 struct AddressWrapper *cur;
398 for (cur = net->head; NULL != cur; cur = cur->next)
400 if ( (cur->addr->assigned_bw_in == cur->calculated_quota_in) &&
401 (cur->addr->assigned_bw_out == cur->calculated_quota_out) )
403 cur->addr->assigned_bw_in = cur->calculated_quota_in;
404 cur->addr->assigned_bw_out = cur->calculated_quota_out;
405 if (GNUNET_YES == cur->addr->active)
406 s->env->bandwidth_changed_cb (s->env->cls,
413 * Distribute bandwidth. The addresses have already been selected,
414 * this is merely distributed the bandwidth among the addresses.
416 * @param s the solver handle
417 * @param n the network, can be NULL for all networks
420 distribute_bandwidth_in_network (struct GAS_PROPORTIONAL_Handle *s,
425 if (0 != s->bulk_lock)
432 LOG (GNUNET_ERROR_TYPE_DEBUG,
433 "Redistributing bandwidth in network %s with %u active and %u total addresses\n",
434 GNUNET_ATS_print_network_type(n->type),
437 s->env->info_cb (s->env->cls,
440 GAS_INFO_PROP_SINGLE);
441 distribute_bandwidth(s,
443 s->env->info_cb (s->env->cls,
446 GAS_INFO_PROP_SINGLE);
447 s->env->info_cb (s->env->cls,
448 GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
450 GAS_INFO_PROP_SINGLE);
451 propagate_bandwidth (s,
454 s->env->info_cb (s->env->cls,
455 GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
457 GAS_INFO_PROP_SINGLE);
461 LOG (GNUNET_ERROR_TYPE_DEBUG,
462 "Redistributing bandwidth in all %u networks\n",
463 s->env->network_count);
464 s->env->info_cb (s->env->cls,
468 for (i = 0; i < s->env->network_count; i++)
469 distribute_bandwidth (s,
470 &s->network_entries[i]);
471 s->env->info_cb (s->env->cls,
475 s->env->info_cb (s->env->cls,
476 GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
479 for (i = 0; i < s->env->network_count; i++)
480 propagate_bandwidth (s,
481 &s->network_entries[i]);
482 s->env->info_cb (s->env->cls,
483 GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
491 * Context for finding the best address* Linked list of addresses in this network: head
493 struct FindBestAddressCtx
498 struct GAS_PROPORTIONAL_Handle *s;
501 * The currently best address
503 struct ATS_Address *best;
508 * Find a "good" address to use for a peer by iterating over the
509 * addresses for this peer. If we already have an existing address,
510 * we stick to it. Otherwise, we pick by lowest distance and then by
513 * @param cls the `struct FindBestAddressCtx *' where we store the result
514 * @param key the peer we are trying to find the best address for
515 * @param value another `struct ATS_Address*` to consider using
516 * @return #GNUNET_OK (continue to iterate)
519 find_best_address_it (void *cls,
520 const struct GNUNET_PeerIdentity *key,
523 struct FindBestAddressCtx *ctx = cls;
524 struct ATS_Address *current = value;
525 struct AddressWrapper *asi = current->solver_information;
526 struct GNUNET_TIME_Relative active_time;
528 double best_distance;
535 /* we need +1 slot if 'current' is not yet active */
536 need = (GNUNET_YES == current->active) ? 0 : 1;
537 /* we save -1 slot if 'best' is active and belongs
538 to the same network (as we would replace it) */
539 if ( (NULL != ctx->best) &&
540 (GNUNET_YES == ctx->best->active) &&
541 (((struct AddressWrapper *) ctx->best->solver_information)->network ==
544 /* we can gain -1 slot if this peers connectivity
545 requirement is higher than that of another peer
546 in that network scope */
547 con = ctx->s->env->get_connectivity (ctx->s->env->cls,
550 all_require_connectivity (ctx->s,
554 /* test if minimum bandwidth for 'current' would be available */
556 = is_bandwidth_available_in_network (asi->network,
560 /* Bandwidth for this address is unavailable, so we cannot use
564 if (GNUNET_YES == current->active)
566 active_time = GNUNET_TIME_absolute_get_duration (asi->activated);
567 if (active_time.rel_value_us <=
568 ((double) GNUNET_TIME_UNIT_SECONDS.rel_value_us) * ctx->s->stability_factor)
570 /* Keep active address for stability reasons */
575 if (NULL == ctx->best)
577 /* We so far have nothing else, so go with it! */
582 /* Now compare ATS information */
583 cur_distance = current->norm_distance.norm;
584 best_distance = ctx->best->norm_distance.norm;
585 cur_delay = current->norm_delay.norm;
586 best_delay = ctx->best->norm_delay.norm;
588 /* user shorter distance */
589 if (cur_distance < best_distance)
591 if (GNUNET_NO == ctx->best->active)
593 /* Activity doesn't influence the equation, use current */
596 else if ((best_distance / cur_distance) > ctx->s->stability_factor)
598 /* Distance change is significant, switch active address! */
603 /* User connection with less delay */
604 if (cur_delay < best_delay)
606 if (GNUNET_NO == ctx->best->active)
608 /* Activity doesn't influence the equation, use current */
611 else if ((best_delay / cur_delay) > ctx->s->stability_factor)
613 /* Latency change is significant, switch active address! */
622 * Find the currently best address for a peer from the set of
623 * addresses available or return NULL of no address is available.
625 * @param s the proportional handle
626 * @param addresses the address hashmap
627 * @param id the peer id
628 * @return the address or NULL
631 get_best_address (struct GAS_PROPORTIONAL_Handle *s,
632 struct GNUNET_CONTAINER_MultiPeerMap *addresses,
633 const struct GNUNET_PeerIdentity *id)
635 struct FindBestAddressCtx fba_ctx;
639 GNUNET_CONTAINER_multipeermap_get_multiple (addresses,
641 &find_best_address_it,
648 * Decrease number of active addresses in network.
650 * @param s the solver handle
651 * @param net the network type
654 address_decrement_active (struct GAS_PROPORTIONAL_Handle *s,
657 GNUNET_assert (net->active_addresses > 0);
658 net->active_addresses--;
659 GNUNET_STATISTICS_update (s->env->stats,
663 GNUNET_assert (s->active_addresses > 0);
664 s->active_addresses--;
665 GNUNET_STATISTICS_update (s->env->stats,
666 "# ATS addresses total",
673 * Address map iterator to find current active address for peer.
674 * Asserts that only one address is active per peer.
676 * @param cls last active address
677 * @param key peer's key
678 * @param value address to check
679 * @return #GNUNET_NO on double active address else #GNUNET_YES;
682 get_active_address_it (void *cls,
683 const struct GNUNET_PeerIdentity *key,
686 struct ATS_Address **dest = cls;
687 struct ATS_Address *aa = value;
689 if (GNUNET_YES != aa->active)
691 GNUNET_assert (NULL == (*dest));
698 * Find current active address for peer
700 * @param s the solver handle
701 * @param peer the peer
702 * @return active address or NULL
704 static struct ATS_Address *
705 get_active_address (struct GAS_PROPORTIONAL_Handle *s,
706 const struct GNUNET_PeerIdentity *peer)
708 struct ATS_Address *dest;
711 GNUNET_CONTAINER_multipeermap_get_multiple (s->env->addresses,
713 &get_active_address_it,
720 * Update active address for a peer. Check if active address exists
721 * and what the best address is, if addresses are different switch.
722 * Then reallocate bandwidth within the affected network scopes.
724 * @param s solver handle
725 * @param current_address the address currently active for the peer,
727 * @param peer the peer to check
730 update_active_address (struct GAS_PROPORTIONAL_Handle *s,
731 struct ATS_Address *current_address,
732 const struct GNUNET_PeerIdentity *peer)
734 struct ATS_Address *best_address;
735 struct AddressWrapper *asi_cur;
736 struct AddressWrapper *asi_best;
737 struct AddressWrapper *aw;
738 struct AddressWrapper *aw_min;
740 unsigned int con_min;
742 best_address = get_best_address (s,
745 if (NULL != best_address)
746 asi_best = best_address->solver_information;
749 if (current_address == best_address)
750 return; /* no changes */
751 if (NULL != current_address)
753 /* We switch to a new address (or to none);
754 mark old address as inactive. */
755 asi_cur = current_address->solver_information;
756 GNUNET_assert (GNUNET_YES == current_address->active);
757 LOG (GNUNET_ERROR_TYPE_INFO,
758 "Disabling previous active address for peer `%s'\n",
760 asi_cur->activated = GNUNET_TIME_UNIT_ZERO_ABS;
761 current_address->active = GNUNET_NO;
762 current_address->assigned_bw_in = 0;
763 current_address->assigned_bw_out = 0;
764 address_decrement_active (s,
766 if ( (NULL == best_address) ||
767 (asi_best->network != asi_cur->network) )
768 distribute_bandwidth_in_network (s,
770 if (NULL == best_address)
772 /* We previously had an active address, but now we cannot
773 * suggest one. Therefore we have to disconnect the peer.
774 * The above call to "distribute_bandwidth_in_network()
775 * does not see 'current_address' so we need to trigger
776 * the update here. */
777 LOG (GNUNET_ERROR_TYPE_DEBUG,
778 "Disconnecting peer `%s'.\n",
780 s->env->bandwidth_changed_cb (s->env->cls,
785 if (NULL == best_address)
787 /* We do not have a new address, so we are done. */
788 LOG (GNUNET_ERROR_TYPE_DEBUG,
789 "Cannot suggest address for peer `%s'\n",
793 /* We do have a new address, activate it */
794 LOG (GNUNET_ERROR_TYPE_DEBUG,
795 "Selecting new address %p for peer `%s'\n",
798 /* Mark address as active */
799 best_address->active = GNUNET_YES;
800 asi_best->activated = GNUNET_TIME_absolute_get ();
801 asi_best->network->active_addresses++;
802 s->active_addresses++;
803 GNUNET_STATISTICS_update (s->env->stats,
804 "# ATS active addresses total",
807 GNUNET_STATISTICS_update (s->env->stats,
808 asi_best->network->stat_active,
811 LOG (GNUNET_ERROR_TYPE_INFO,
812 "Address %p for peer `%s' is now active\n",
817 is_bandwidth_available_in_network (asi_best->network,
820 /* we went over the maximum number of addresses for
821 this scope; remove the address with the smallest
822 connectivity requirement */
823 con_min = UINT32_MAX;
825 for (aw = asi_best->network->head; NULL != aw; aw = aw->next)
828 (a_con = s->env->get_connectivity (s->env->cls,
837 update_active_address (s,
841 distribute_bandwidth_in_network (s,
847 * The preferences for a peer in the problem changed.
849 * @param solver the solver handle
850 * @param peer the peer to change the preference for
851 * @param kind the kind to change the preference
852 * @param pref_rel the normalized preference value for this kind over all clients
855 GAS_proportional_change_preference (void *solver,
856 const struct GNUNET_PeerIdentity *peer,
857 enum GNUNET_ATS_PreferenceKind kind,
860 struct GAS_PROPORTIONAL_Handle *s = solver;
862 if (GNUNET_ATS_PREFERENCE_BANDWIDTH != kind)
863 return; /* we do not care */
864 distribute_bandwidth_in_network (s,
870 * Get application feedback for a peer
872 * @param solver the solver handle
873 * @param application the application
874 * @param peer the peer to change the preference for
875 * @param scope the time interval for this feedback: [now - scope .. now]
876 * @param kind the kind to change the preference
877 * @param score the score
880 GAS_proportional_feedback (void *solver,
881 struct GNUNET_SERVER_Client *application,
882 const struct GNUNET_PeerIdentity *peer,
883 const struct GNUNET_TIME_Relative scope,
884 enum GNUNET_ATS_PreferenceKind kind,
887 /* Proportional does not care about feedback */
892 * Get the preferred address for a specific peer
894 * @param solver the solver handle
895 * @param peer the identity of the peer
898 GAS_proportional_start_get_address (void *solver,
899 const struct GNUNET_PeerIdentity *peer)
901 struct GAS_PROPORTIONAL_Handle *s = solver;
903 update_active_address (s,
904 get_active_address (s,
911 * Stop notifying about address and bandwidth changes for this peer
913 * @param solver the solver handle
914 * @param peer the peer
917 GAS_proportional_stop_get_address (void *solver,
918 const struct GNUNET_PeerIdentity *peer)
920 struct GAS_PROPORTIONAL_Handle *s = solver;
921 struct ATS_Address *cur;
922 struct AddressWrapper *asi;
924 cur = get_active_address (s,
928 asi = cur->solver_information;
929 distribute_bandwidth_in_network (s,
935 * Start a bulk operation
937 * @param solver the solver
940 GAS_proportional_bulk_start (void *solver)
942 struct GAS_PROPORTIONAL_Handle *s = solver;
944 LOG (GNUNET_ERROR_TYPE_DEBUG,
945 "Locking solver for bulk operation ...\n");
946 GNUNET_assert (NULL != solver);
952 * Bulk operation done.
954 * @param solver our `struct GAS_PROPORTIONAL_Handle *`
957 GAS_proportional_bulk_stop (void *solver)
959 struct GAS_PROPORTIONAL_Handle *s = solver;
961 LOG (GNUNET_ERROR_TYPE_DEBUG,
962 "Unlocking solver from bulk operation ...\n");
963 if (s->bulk_lock < 1)
969 if ( (0 == s->bulk_lock) &&
970 (0 < s->bulk_requests) )
972 LOG (GNUNET_ERROR_TYPE_INFO,
973 "No lock pending, recalculating\n");
974 distribute_bandwidth_in_network (s,
976 s->bulk_requests = 0;
982 * Transport properties for this address have changed
984 * @param solver solver handle
985 * @param address the address
988 GAS_proportional_address_property_changed (void *solver,
989 struct ATS_Address *address)
991 struct GAS_PROPORTIONAL_Handle *s = solver;
992 struct AddressWrapper *asi = address->solver_information;
994 distribute_bandwidth_in_network (s,
1000 * Add a new single address to a network
1002 * @param solver the solver Handle
1003 * @param address the address to add
1004 * @param network network type of this address
1007 GAS_proportional_address_add (void *solver,
1008 struct ATS_Address *address,
1009 enum GNUNET_ATS_Network_Type network)
1011 struct GAS_PROPORTIONAL_Handle *s = solver;
1012 struct Network *net;
1013 struct AddressWrapper *aw;
1015 GNUNET_assert (network < s->env->network_count);
1016 net = &s->network_entries[network];
1017 net->total_addresses++;
1019 aw = GNUNET_new (struct AddressWrapper);
1022 address->solver_information = aw;
1023 GNUNET_CONTAINER_DLL_insert (net->head,
1026 GNUNET_STATISTICS_update (s->env->stats,
1027 "# ATS addresses total",
1030 GNUNET_STATISTICS_update (s->env->stats,
1034 update_active_address (s,
1035 get_active_address (s,
1038 LOG (GNUNET_ERROR_TYPE_INFO,
1039 "Added new address for `%s', now total %u and active %u addresses in network `%s'\n",
1040 GNUNET_i2s (&address->peer),
1041 net->total_addresses,
1042 net->active_addresses,
1048 * Remove an address from the solver. To do so, we:
1049 * - Removed it from specific network
1050 * - Decrease the number of total addresses
1052 * - decrease number of active addreses
1055 * @param solver the solver handle
1056 * @param address the address to remove
1059 GAS_proportional_address_delete (void *solver,
1060 struct ATS_Address *address)
1062 struct GAS_PROPORTIONAL_Handle *s = solver;
1063 struct AddressWrapper *aw = address->solver_information;
1064 struct Network *net = aw->network;
1066 LOG (GNUNET_ERROR_TYPE_DEBUG,
1067 "Deleting %s address for peer `%s' from network `%s' (total: %u/active: %u)\n",
1068 (GNUNET_NO == address->active) ? "inactive" : "active",
1069 GNUNET_i2s (&address->peer),
1071 net->total_addresses,
1072 net->active_addresses);
1074 GNUNET_CONTAINER_DLL_remove (net->head,
1077 GNUNET_assert (net->total_addresses > 0);
1078 net->total_addresses--;
1079 GNUNET_STATISTICS_update (s->env->stats,
1083 if (GNUNET_YES == address->active)
1085 /* Address was active, remove from network and update quotas */
1086 update_active_address (s,
1089 distribute_bandwidth_in_network (s, net);
1092 address->solver_information = NULL;
1093 LOG (GNUNET_ERROR_TYPE_DEBUG,
1094 "After deleting address now total %u and active %u addresses in network `%s'\n",
1095 net->total_addresses,
1096 net->active_addresses,
1102 * Function invoked when the plugin is loaded.
1104 * @param[in,out] cls the `struct GNUNET_ATS_PluginEnvironment *` to use;
1105 * modified to return the API functions (ugh).
1106 * @return the `struct GAS_PROPORTIONAL_Handle` to pass as a closure
1109 libgnunet_plugin_ats_proportional_init (void *cls)
1111 static struct GNUNET_ATS_SolverFunctions sf;
1112 struct GNUNET_ATS_PluginEnvironment *env = cls;
1113 struct GAS_PROPORTIONAL_Handle *s;
1114 struct Network * cur;
1118 s = GNUNET_new (struct GAS_PROPORTIONAL_Handle);
1121 sf.s_add = &GAS_proportional_address_add;
1122 sf.s_address_update_property = &GAS_proportional_address_property_changed;
1123 sf.s_get = &GAS_proportional_start_get_address;
1124 sf.s_get_stop = &GAS_proportional_stop_get_address;
1125 sf.s_pref = &GAS_proportional_change_preference;
1126 sf.s_feedback = &GAS_proportional_feedback;
1127 sf.s_del = &GAS_proportional_address_delete;
1128 sf.s_bulk_start = &GAS_proportional_bulk_start;
1129 sf.s_bulk_stop = &GAS_proportional_bulk_stop;
1130 s->stability_factor = PROP_STABILITY_FACTOR;
1131 if (GNUNET_SYSERR !=
1132 GNUNET_CONFIGURATION_get_value_float (env->cfg,
1134 "PROP_STABILITY_FACTOR",
1137 if ((f_tmp < 1.0) || (f_tmp > 2.0))
1139 LOG (GNUNET_ERROR_TYPE_ERROR,
1140 _("Invalid %s configuration %f \n"),
1141 "PROP_STABILITY_FACTOR",
1146 s->stability_factor = f_tmp;
1147 LOG (GNUNET_ERROR_TYPE_INFO,
1148 "Using %s of %.3f\n",
1149 "PROP_STABILITY_FACTOR",
1153 s->prop_factor = PROPORTIONALITY_FACTOR;
1154 if (GNUNET_SYSERR !=
1155 GNUNET_CONFIGURATION_get_value_float (env->cfg,
1157 "PROP_PROPORTIONALITY_FACTOR",
1162 LOG (GNUNET_ERROR_TYPE_ERROR,
1163 _("Invalid %s configuration %f\n"),
1164 "PROP_PROPORTIONALITY_FACTOR",
1169 s->prop_factor = f_tmp;
1170 LOG (GNUNET_ERROR_TYPE_INFO,
1171 "Using %s of %.3f\n",
1172 "PROP_PROPORTIONALITY_FACTOR",
1177 s->network_entries = GNUNET_malloc (env->network_count *
1178 sizeof (struct Network));
1179 for (c = 0; c < env->network_count; c++)
1181 cur = &s->network_entries[c];
1183 cur->total_quota_in = env->in_quota[c];
1184 cur->total_quota_out = env->out_quota[c];
1185 cur->desc = GNUNET_ATS_print_network_type (c);
1186 GNUNET_asprintf (&cur->stat_total,
1187 "# ATS addresses %s total",
1189 GNUNET_asprintf (&cur->stat_active,
1190 "# ATS active addresses %s total",
1192 LOG (GNUNET_ERROR_TYPE_INFO,
1193 "Added network %u `%s' (%llu/%llu)\n",
1196 cur->total_quota_in,
1197 cur->total_quota_out);
1204 * Function used to unload the plugin.
1206 * @param cls return value from #libgnunet_plugin_ats_proportional_init()
1209 libgnunet_plugin_ats_proportional_done (void *cls)
1211 struct GNUNET_ATS_SolverFunctions *sf = cls;
1212 struct GAS_PROPORTIONAL_Handle *s = sf->cls;
1213 struct AddressWrapper *cur;
1214 struct AddressWrapper *next;
1217 for (c = 0; c < s->env->network_count; c++)
1219 GNUNET_break (0 == s->network_entries[c].total_addresses);
1220 GNUNET_break (0 == s->network_entries[c].active_addresses);
1221 next = s->network_entries[c].head;
1222 while (NULL != (cur = next))
1225 GNUNET_CONTAINER_DLL_remove (s->network_entries[c].head,
1226 s->network_entries[c].tail,
1228 GNUNET_free_non_null (cur->addr->solver_information);
1231 GNUNET_free (s->network_entries[c].stat_total);
1232 GNUNET_free (s->network_entries[c].stat_active);
1234 GNUNET_break (0 == s->active_addresses);
1235 GNUNET_free (s->network_entries);
1241 /* end of plugin_ats_proportional.c */