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22 * @file ats/plugin_ats_proportional.c
23 * @brief ATS proportional solver
24 * @author Matthias Wachs
25 * @author Christian Grothoff
28 #include "gnunet_statistics_service.h"
29 #include "gnunet_ats_plugin.h"
30 #include "gnunet_ats_service.h"
31 #include "gnunet-service-ats_addresses.h"
33 #define PROP_STABILITY_FACTOR 1.25
36 #define LOG(kind,...) GNUNET_log_from (kind, "ats-proportional",__VA_ARGS__)
41 * NOTE: Do not change this documentation. This documentation is based
42 * on gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
43 * use build_txt.sh to generate plaintext output
45 * ATS addresses : proportional solver
47 * The proportional solver ("proportional") distributes the available
48 * bandwidth fair over all the addresses influenced by the
49 * preference values. For each available network type an in- and
50 * outbound quota is configured and the bandwidth available in
51 * these networks is distributed over the addresses. The solver
52 * first assigns every addresses the minimum amount of bandwidth
53 * #GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT and then distributes the
54 * remaining bandwidth available according to the preference
55 * values. For each peer only a single address gets bandwidth
56 * assigned and only one address marked as active. The most
57 * important functionality for the solver is implemented in: *
58 * find_address_it is an hashmap iterator returning the prefered
59 * address for an peer * update_quota_per_network distributes
60 * available bandwidth for a network over active addresses
62 * Changes to addresses automatically have an impact on the the
63 * bandwidth assigned to other addresses in the same network since
64 * the solver distributes the remaining bandwidth over the
65 * addresses in the network. When changes to the addresses occur,
66 * the solver first performs the changes, like adding or deleting
67 * addresses, and then updates bandwidth assignment for the
68 * affected network. Bandwidth assignment is only recalculated on
69 * demand when an address is requested by a client for a peer or
70 * when the addresses available have changed or an address changed
71 * the network it is located in. When the bandwidth assignment has
72 * changed the callback is called with the new bandwidth
73 * assignments. The bandwidth distribution for a network is
74 * recalculated due to: * address suggestion requests * address
75 * deletions * address switching networks during address update *
78 * 3.1 Data structures used
80 * For each ATS network (e.g. WAN, LAN, loopback) a struct Network
81 * is used to specify network related information as total adresses
82 * and active addresses in this network and the configured in- and
83 * outbound quota. Each network also contains a list of addresses
84 * added to the solver located in this network. The proportional
85 * solver uses the addresses' solver_information field to store the
86 * proportional network it belongs to for each address.
90 * When the proportional solver is initialized the solver creates a
91 * new solver handle and initializes the network structures with
92 * the quotas passed from addresses and returns the handle solver.
94 * 3.3 Adding an address
96 * When a new address is added to the solver using s_add, a lookup
97 * for the network for this address is done and the address is
98 * enqueued in in the linked list of the network.
100 * 3.4 Updating an address
102 * The main purpose of address updates is to update the ATS
103 * information for addresse selection. Important for the proportional
104 * solver is when an address switches network it is located
105 * in. This is common because addresses added by transport's
106 * validation mechanism are commonly located in
107 * #GNUNET_ATS_NET_UNSPECIFIED. Addresses in validation are located
108 * in this network type and only if a connection is successful on
109 * return of payload data transport switches to the real network
110 * the address is located in. When an address changes networks it
111 * is first of all removed from the old network using the solver
112 * API function #GAS_proportional_address_delete() and the network in
113 * the address struct is updated. A lookup for the respective new
114 * proportional network is done and stored in the addresse's
115 * solver_information field. Next the address is re-added to the
116 * solver using the solver API function
117 * #GAS_proportional_address_add(). If the address was marked as in
118 * active, the solver checks if bandwidth is available in the
119 * network and if yes sets the address to active and updates the
120 * bandwidth distribution in this network. If no bandwidth is
121 * available it sets the bandwidth for this address to 0 and tries
122 * to suggest an alternative address. If an alternative address was
123 * found, addresses' callback is called for this address.
125 * 3.5 Deleting an address
127 * When an address is removed from the solver, it removes the
128 * respective address from the network and if the address was
129 * marked as active, it updates the bandwidth distribution for this
132 * 3.6 Requesting addresses
134 * When an address is requested for a peer the solver performs a
135 * lookup for the peer entry in addresses address hashmap and
136 * selects the best address. The selection of the most suitable
137 * address is done in the find_address_it hashmap iterator
138 * described in detail in section 3.7. If no address is returned,
139 * no address can be suggested at the moment. If the address
140 * returned is marked as active, the solver can return this
141 * address. If the address is not marked as active, the solver
142 * checks if another address belongign to this peer is marked as
143 * active and marks the address as inactive, updates the bandwidth
144 * for this address to 0, call the bandwidth changed callback for
145 * this address due to the change and updates quota assignment for
146 * the addresse's network. the now in-active address is belonging
147 * to. The solver marks the new address as active and updates the
148 * bandwidth assignment for this network.
150 * 3.7 Choosing addresses
152 * Choosing the best possible address for suggestion is done by
153 * iterating over all addresses of a peer stored in addresses'
154 * hashmap and using the hashmap iterator find_address_it to select
155 * the best available address. Several checks are done when an
156 * address is selected. First if this address is currently blocked
157 * by addresses from being suggested. An address is blocked for the
158 * duration of #ATS_BLOCKING_DELTA when it is suggested to
159 * transport. Next it is checked if at least
160 * #GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT bytes bandwidth is available
161 * in the addresse's network, because suggesting an address without
162 * bandwidth does not make sense. This also ensures that all active
163 * addresses in this network get at least the minimum amount of
164 * bandwidth assigned. In the next step the solver ensures that for
165 * tcp connections inbound connections are prefered over outbound
166 * connections. In the next stet the solver ensures that
167 * connections are prefered in the following order: * connections
168 * are already established and have bandwidth assigned *
169 * connections with a shorter distance * connectes have a shorter
172 * 3.8 Changing preferences
176 * During shutdown all network entries and aging processes are
177 * destroyed and freed.
182 * This solver assigns in and outbound bandwidth equally for all
183 * addresses in specific network type (WAN, LAN) based on configured
184 * in and outbound quota for this network.
186 * The solver is notified by addresses about changes to the addresses
187 * and recalculates the bandwith assigned if required. The solver
188 * notifies addresses by calling the GAS_bandwidth_changed_cb
196 * For each peer only a single is selected and marked as "active" in the address
201 * You have the networks WAN and LAN and quotas
202 * WAN_TOTAL_IN, WAN_TOTAL_OUT
203 * LAN_TOTAL_IN, LAN_TOTAL_OUT
205 * If you have x addresses in the network segment LAN, the quotas are
206 * QUOTA_PER_ADDRESS = LAN_TOTAL_OUT / x
208 * Quotas are automatically recalculated and reported back when addresses are
213 #define PROPORTIONALITY_FACTOR 2.0
216 * A handle for the proportional solver
218 struct GAS_PROPORTIONAL_Handle
220 struct GNUNET_ATS_PluginEnvironment *env;
225 struct GNUNET_STATISTICS_Handle *stats;
228 * Hashmap containing all valid addresses
230 struct GNUNET_CONTAINER_MultiPeerMap *addresses;
233 * Pending address requests
235 struct GNUNET_CONTAINER_MultiPeerMap *requests;
238 * Bandwidth changed callback
240 GAS_bandwidth_changed_cb bw_changed;
243 * Bandwidth changed callback cls
245 void *bw_changed_cls;
248 * ATS function to get preferences
250 GAS_get_preferences get_preferences;
253 * Closure for ATS function to get preferences
255 void *get_preferences_cls;
258 * ATS function to get properties
260 GAS_get_properties get_properties;
263 * Closure for ATS function to get properties
265 void *get_properties_cls;
273 * Number of changes while solver was locked
278 * Total number of addresses for solver
280 unsigned int total_addresses;
283 * Number of active addresses for solver
285 unsigned int active_addresses;
290 struct Network *network_entries;
295 unsigned int network_count;
298 * Proportionality factor
305 double stability_factor;
309 * Representation of a network
319 * Network description
324 * Total inbound quota
326 unsigned long long total_quota_in;
329 * Total outbound quota
331 unsigned long long total_quota_out;
334 * Number of active addresses for this network
336 unsigned int active_addresses;
339 * Number of total addresses for this network
341 unsigned int total_addresses;
344 * String for statistics total addresses
349 * String for statistics active addresses
354 * Linked list of addresses in this network: head
356 struct AddressWrapper *head;
359 * Linked list of addresses in this network: tail
361 struct AddressWrapper *tail;
365 * Address information stored in the solver
367 struct AddressSolverInformation
370 * Network scope this address is in
372 struct Network *network;
377 uint32_t calculated_quota_in;
382 uint32_t calculated_quota_out;
385 * When was this address activated
387 struct GNUNET_TIME_Absolute activated;
392 * Wrapper for addresses to store them in network's linked list
394 struct AddressWrapper
399 struct AddressWrapper *next;
404 struct AddressWrapper *prev;
409 struct ATS_Address *addr;
414 * Function used to unload the plugin.
416 * @param cls return value from #libgnunet_plugin_ats_proportional_init()
419 libgnunet_plugin_ats_proportional_done (void *cls)
421 struct GAS_PROPORTIONAL_Handle *s = cls;
422 struct AddressWrapper *cur;
423 struct AddressWrapper *next;
426 for (c = 0; c < s->network_count; c++)
428 if (s->network_entries[c].total_addresses > 0)
430 LOG(GNUNET_ERROR_TYPE_DEBUG,
431 "Had %u addresses for network `%s' not deleted during shutdown\n",
432 s->network_entries[c].total_addresses, s->network_entries[c].desc);
436 if (s->network_entries[c].active_addresses > 0)
438 LOG(GNUNET_ERROR_TYPE_DEBUG,
439 "Had %u active addresses for network `%s' not deleted during shutdown\n",
440 s->network_entries[c].active_addresses, s->network_entries[c].desc);
444 next = s->network_entries[c].head;
445 while (NULL != (cur = next))
448 GNUNET_CONTAINER_DLL_remove(s->network_entries[c].head,
449 s->network_entries[c].tail, cur);
450 GNUNET_free_non_null (cur->addr->solver_information);
453 GNUNET_free(s->network_entries[c].stat_total);
454 GNUNET_free(s->network_entries[c].stat_active);
456 if (s->total_addresses > 0)
458 LOG(GNUNET_ERROR_TYPE_DEBUG,
459 "Had %u addresses not deleted during shutdown\n", s->total_addresses);
462 if (s->active_addresses > 0)
464 LOG(GNUNET_ERROR_TYPE_DEBUG,
465 "Had %u active addresses not deleted during shutdown\n",
466 s->active_addresses);
469 GNUNET_free (s->network_entries);
470 GNUNET_CONTAINER_multipeermap_destroy (s->requests);
477 * Test if bandwidth is available in this network to add an additional address
479 * @param net the network type to update
480 * @return #GNUNET_YES or #GNUNET_NO
483 is_bandwidth_available_in_network (struct Network *net)
485 GNUNET_assert(NULL != net);
486 unsigned int na = net->active_addresses + 1;
487 uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
488 if (((net->total_quota_in / na) > min_bw)
489 && ((net->total_quota_out / na) > min_bw))
491 LOG(GNUNET_ERROR_TYPE_DEBUG,
492 "Enough bandwidth available for %u active addresses in network `%s'\n",
497 LOG(GNUNET_ERROR_TYPE_DEBUG,
498 "Not enough bandwidth available for %u active addresses in network `%s'\n",
505 * Update bandwidth assigned to peers in this network
507 * @param s the solver handle
508 * @param net the network type to update
512 distribute_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
515 struct AddressSolverInformation *asi;
516 struct AddressWrapper *cur_address;
517 unsigned long long remaining_quota_in = 0;
518 unsigned long long quota_out_used = 0;
519 unsigned long long remaining_quota_out = 0;
520 unsigned long long quota_in_used = 0;
522 uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
523 double relative_peer_prefence;
524 double sum_relative_peer_prefences; /* Important: has to be double not float due to precision */
525 double cur_pref; /* Important: has to be double not float due to precision */
528 const double *peer_relative_prefs = NULL; /* Important: has to be double not float due to precision */
530 uint32_t assigned_quota_in = 0;
531 uint32_t assigned_quota_out = 0;
534 LOG (GNUNET_ERROR_TYPE_INFO,
535 "Recalculate quota for network type `%s' for %u addresses (in/out): %llu/%llu \n",
537 net->active_addresses,
539 net->total_quota_in);
541 if (net->active_addresses == 0)
543 return; /* no addresses to update */
547 * Assign every peer in network minimum Bandwidth
548 * Distribute bandwidth left according to preference
551 if ((net->active_addresses * min_bw) > net->total_quota_in)
556 if ((net->active_addresses * min_bw) > net->total_quota_out)
562 remaining_quota_in = net->total_quota_in - (net->active_addresses * min_bw);
563 remaining_quota_out = net->total_quota_out - (net->active_addresses * min_bw);
564 LOG(GNUNET_ERROR_TYPE_DEBUG, "Remaining bandwidth : (in/out): %llu/%llu \n",
565 remaining_quota_in, remaining_quota_out);
566 sum_relative_peer_prefences = 0.0;
568 /* Calculate sum of relative preference for active addresses in this network */
570 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
572 if (GNUNET_YES != cur_address->addr->active)
575 GNUNET_assert( NULL != (peer_relative_prefs = s->get_preferences (s->get_preferences_cls,
576 &cur_address->addr->peer)));
577 relative_peer_prefence = 0.0;
578 relative_peer_prefence += peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
579 sum_relative_peer_prefences += relative_peer_prefence;
583 if (count_addresses != net->active_addresses)
586 LOG (GNUNET_ERROR_TYPE_WARNING,
587 "%s: Counted %u active addresses, but network says to have %u active addresses\n",
588 net->desc, count_addresses, net->active_addresses);
589 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
591 if (GNUNET_YES != cur_address->addr->active)
594 LOG (GNUNET_ERROR_TYPE_WARNING,
595 "Active: `%s' `%s' length %u\n",
596 GNUNET_i2s (&cur_address->addr->peer),
597 cur_address->addr->plugin,
598 cur_address->addr->addr_len);
602 LOG (GNUNET_ERROR_TYPE_INFO,
603 "Total relative preference %.3f for %u addresses in network %s\n",
604 sum_relative_peer_prefences, net->active_addresses, net->desc);
606 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
608 if (GNUNET_YES == cur_address->addr->active)
610 GNUNET_assert( NULL != (peer_relative_prefs =
611 s->get_preferences (s->get_preferences_cls, &cur_address->addr->peer)));
613 cur_pref = peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
614 total_weight = net->active_addresses +
615 s->prop_factor * sum_relative_peer_prefences;
616 peer_weight = (1.0 + (s->prop_factor * cur_pref));
618 assigned_quota_in = min_bw
619 + ((peer_weight / total_weight) * remaining_quota_in);
620 assigned_quota_out = min_bw
621 + ((peer_weight / total_weight) * remaining_quota_out);
623 LOG (GNUNET_ERROR_TYPE_INFO,
624 "New quota for peer `%s' with weight (cur/total) %.3f/%.3f (in/out): %llu / %llu\n",
625 GNUNET_i2s (&cur_address->addr->peer), peer_weight, total_weight,
626 assigned_quota_in, assigned_quota_out);
630 assigned_quota_in = 0;
631 assigned_quota_out = 0;
634 quota_in_used += assigned_quota_in;
635 quota_out_used += assigned_quota_out;
636 /* Prevent overflow due to rounding errors */
637 if (assigned_quota_in > UINT32_MAX)
638 assigned_quota_in = UINT32_MAX;
639 if (assigned_quota_out > UINT32_MAX)
640 assigned_quota_out = UINT32_MAX;
642 /* Compare to current bandwidth assigned */
643 asi = cur_address->addr->solver_information;
644 asi->calculated_quota_in = assigned_quota_in;
645 asi->calculated_quota_out = assigned_quota_out;
647 LOG(GNUNET_ERROR_TYPE_DEBUG,
648 "Total bandwidth assigned is (in/out): %llu /%llu\n", quota_in_used,
650 if (quota_out_used > net->total_quota_out + 1) /* +1 is required due to rounding errors */
652 LOG(GNUNET_ERROR_TYPE_ERROR,
653 "Total outbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
654 net->active_addresses, quota_out_used, net->total_quota_out);
656 if (quota_in_used > net->total_quota_in + 1) /* +1 is required due to rounding errors */
658 LOG(GNUNET_ERROR_TYPE_ERROR,
659 "Total inbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
660 net->active_addresses, quota_in_used, net->total_quota_in);
666 * Context for finding the best address* Linked list of addresses in this network: head
668 struct FindBestAddressCtx
673 struct GAS_PROPORTIONAL_Handle *s;
676 * The currently best address
678 struct ATS_Address *best;
683 * Find index of a ATS property type in the array.
686 find_property_index (uint32_t type)
688 int existing_types[] = GNUNET_ATS_QualityProperties;
691 for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
692 if (existing_types[c] == type)
694 return GNUNET_SYSERR;
699 * Find a "good" address to use for a peer by iterating over the addresses for this peer.
700 * If we already have an existing address, we stick to it.
701 * Otherwise, we pick by lowest distance and then by lowest latency.
703 * @param cls the `struct FindBestAddressCtx *' where we store the result
705 * @param value another `struct ATS_Address*` to consider using
706 * @return #GNUNET_OK (continue to iterate)
709 find_best_address_it (void *cls,
710 const struct GNUNET_PeerIdentity *key,
713 struct FindBestAddressCtx *ctx = cls;
714 struct ATS_Address *current = value;
715 struct ATS_Address *current_best = current;
716 struct GNUNET_TIME_Absolute now;
717 struct AddressSolverInformation *asi;
718 struct GNUNET_TIME_Relative active_time;
719 struct GNUNET_TIME_Relative min_active_time;
720 const double *norm_prop_cur;
721 const double *norm_prop_best;
723 double best_distance;
729 asi = current->solver_information;
730 now = GNUNET_TIME_absolute_get ();
732 if ((current->active == GNUNET_NO)
733 && (current->blocked_until.abs_value_us
734 == GNUNET_TIME_absolute_max (now, current->blocked_until).abs_value_us))
736 /* This address is blocked for suggestion */
737 LOG (GNUNET_ERROR_TYPE_DEBUG,
738 "Address %p blocked for suggestion for %s \n",
740 GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_difference (now, current->blocked_until),
750 if (GNUNET_NO == is_bandwidth_available_in_network (asi->network))
752 return GNUNET_OK; /* There's no bandwidth available in this network */
755 if (NULL != ctx->best)
757 /* Compare current addresses with denominated 'best' address */
758 current_best = ctx->best;
762 /* We do not have a 'best' address so take this address */
763 LOG (GNUNET_ERROR_TYPE_DEBUG,
764 "Setting initial address %p\n",
766 current_best = current;
770 if (GNUNET_YES == current->active)
772 GNUNET_assert (asi->activated.abs_value_us != GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us);
773 active_time = GNUNET_TIME_absolute_get_duration (asi->activated);
774 min_active_time.rel_value_us = ((double) GNUNET_TIME_UNIT_SECONDS.rel_value_us) *
775 ctx->s->stability_factor;
776 if (active_time.rel_value_us <= min_active_time.rel_value_us)
778 /* Keep active address for stability reasons */
784 /* Now compare ATS information */
785 norm_prop_cur = ctx->s->get_properties (ctx->s->get_properties_cls,
786 (const struct ATS_Address *) current);
787 index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
788 cur_distance = norm_prop_cur[index];
789 index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
790 cur_delay = norm_prop_cur[index];
792 norm_prop_best = ctx->s->get_properties (ctx->s->get_properties_cls,
793 (const struct ATS_Address *) ctx->best);
794 index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
795 best_distance = norm_prop_best[index];
796 index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
797 best_delay = norm_prop_best[index];
799 /* user shorter distance */
800 if (cur_distance < best_distance)
802 if (GNUNET_NO == ctx->best->active)
804 current_best = current; /* Use current */
806 else if ((best_distance / cur_distance) > ctx->s->stability_factor)
808 /* Best and active address performs worse */
809 current_best = current;
814 /* Use current best */
815 current_best = ctx->best;
818 /* User connection with less delay */
819 if (cur_delay < best_delay)
822 if (GNUNET_NO == ctx->best->active)
824 current_best = current; /* Use current */
826 else if ((best_delay / cur_delay) > ctx->s->stability_factor)
828 /* Best and active address performs worse */
829 current_best = current;
834 /* Use current best */
835 current_best = ctx->best;
839 ctx->best = current_best;
845 * Find the currently best address for a peer from the set of addresses available
846 * or return NULL of no address is available
848 * @param s the proportional handle
849 * @param addresses the address hashmap
850 * @param id the peer id
851 * @return the address or NULL
854 get_best_address (struct GAS_PROPORTIONAL_Handle *s,
855 struct GNUNET_CONTAINER_MultiPeerMap *addresses,
856 const struct GNUNET_PeerIdentity *id)
858 struct FindBestAddressCtx fba_ctx;
862 GNUNET_CONTAINER_multipeermap_get_multiple (addresses,
864 &find_best_address_it,
871 * Hashmap Iterator to find current active address for peer
873 * @param cls last active address
874 * @param key peer's key
875 * @param value address to check
876 * @return #GNUNET_NO on double active address else #GNUNET_YES;
879 get_active_address_it (void *cls,
880 const struct GNUNET_PeerIdentity *key,
883 struct ATS_Address **dest = cls;
884 struct ATS_Address *aa = (struct ATS_Address *) value;
886 LOG (GNUNET_ERROR_TYPE_INFO,
887 "Checking address %p\n", aa);
889 if (GNUNET_YES == aa->active)
891 LOG (GNUNET_ERROR_TYPE_INFO,
892 "Address %p is active\n", aa);
895 /* should never happen */
896 LOG (GNUNET_ERROR_TYPE_ERROR,
897 "Multiple active addresses for peer `%s'\n",
898 GNUNET_i2s (&aa->peer));
910 * Find current active address for peer
912 * @param solver the solver handle
913 * @param addresses the address set
914 * @param peer the peer
915 * @return active address or NULL
917 static struct ATS_Address *
918 get_active_address (void *solver,
919 const struct GNUNET_CONTAINER_MultiPeerMap * addresses,
920 const struct GNUNET_PeerIdentity *peer)
922 static struct ATS_Address * dest = NULL;
925 GNUNET_CONTAINER_multipeermap_get_multiple (addresses, peer,
926 &get_active_address_it, &dest);
932 * Lookup network struct by type
934 * @param s the solver handle
935 * @param type the network type
936 * @return the network struct
938 static struct Network *
939 get_network (struct GAS_PROPORTIONAL_Handle *s, uint32_t type)
942 for (c = 0; c < s->network_count; c++)
944 if (s->network_entries[c].type == type)
945 return &s->network_entries[c];
952 * Increase address count in network
954 * @param s the solver handle
955 * @param net the network type
956 * @param total increase total addresses
957 * @param active increase active addresses
960 address_increment (struct GAS_PROPORTIONAL_Handle *s,
965 if (GNUNET_YES == total)
967 s->total_addresses++;
968 net->total_addresses++;
969 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", 1, GNUNET_NO);
970 GNUNET_STATISTICS_update (s->stats, net->stat_total, 1, GNUNET_NO);
972 if (GNUNET_YES == active)
974 net->active_addresses++;
975 s->active_addresses++;
976 GNUNET_STATISTICS_update (s->stats, "# ATS active addresses total", 1,
978 GNUNET_STATISTICS_update (s->stats, net->stat_active, 1, GNUNET_NO);
985 * Decrease address count in network
987 * @param s the solver handle
988 * @param net the network type
989 * @param total decrease total addresses
990 * @param active decrease active addresses
993 addresse_decrement (struct GAS_PROPORTIONAL_Handle *s,
1000 if (GNUNET_YES == total)
1002 if (s->total_addresses < 1)
1005 res = GNUNET_SYSERR;
1009 s->total_addresses--;
1010 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", -1,
1013 if (net->total_addresses < 1)
1016 res = GNUNET_SYSERR;
1020 net->total_addresses--;
1021 GNUNET_STATISTICS_update (s->stats, net->stat_total, -1, GNUNET_NO);
1025 if (GNUNET_YES == active)
1027 if (net->active_addresses < 1)
1030 res = GNUNET_SYSERR;
1034 net->active_addresses--;
1035 GNUNET_STATISTICS_update (s->stats, net->stat_active, -1, GNUNET_NO);
1037 if (s->active_addresses < 1)
1040 res = GNUNET_SYSERR;
1044 s->active_addresses--;
1045 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", -1,
1054 * Compares addresses
1056 * @param a address a
1057 * @param b address b
1058 * @return GNUNET_YES if equal, GNUNET_NO else
1061 address_eq (struct ATS_Address *a, struct ATS_Address *b)
1063 GNUNET_assert (NULL != a);
1064 GNUNET_assert (NULL != b);
1065 if (0 != strcmp(a->plugin, b->plugin))
1067 if (a->addr_len != b->addr_len)
1069 if (0 != memcmp (a->addr, b->addr, b->addr_len))
1071 if (a->session_id != b->session_id)
1078 * Notify bandwidth changes to addresses
1080 * @param s solver handle
1081 * @param net the network to propagate changes in
1084 propagate_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
1085 struct Network *net)
1087 struct AddressWrapper *cur;
1088 struct AddressSolverInformation *asi;
1089 for (cur = net->head; NULL != cur; cur = cur->next)
1091 asi = cur->addr->solver_information;
1092 if ( (cur->addr->assigned_bw_in != asi->calculated_quota_in) ||
1093 (cur->addr->assigned_bw_out != asi->calculated_quota_out) )
1095 cur->addr->assigned_bw_in = asi->calculated_quota_in;
1096 cur->addr->assigned_bw_out = asi->calculated_quota_out;
1098 /* Reset for next iteration */
1099 asi->calculated_quota_in = 0;
1100 asi->calculated_quota_out = 0;
1101 LOG (GNUNET_ERROR_TYPE_DEBUG,
1102 "Bandwidth for %s address %p for peer `%s' changed to %u/%u\n",
1103 (GNUNET_NO == cur->addr->active) ? "inactive" : "active",
1105 GNUNET_i2s (&cur->addr->peer),
1106 cur->addr->assigned_bw_in,
1107 cur->addr->assigned_bw_out);
1109 /* Notify on change */
1110 if ((GNUNET_YES == cur->addr->active))
1112 s->bw_changed (s->bw_changed_cls, cur->addr);
1120 * Distribibute bandwidth
1122 * @param s the solver handle
1123 * @param n the network, can be NULL for all network
1126 distribute_bandwidth_in_network (struct GAS_PROPORTIONAL_Handle *s,
1129 if (GNUNET_YES == s->bulk_lock)
1137 LOG (GNUNET_ERROR_TYPE_INFO,
1138 "Redistributing bandwidth in network %s with %u active and %u total addresses\n",
1139 GNUNET_ATS_print_network_type(n->type),
1140 n->active_addresses, n->total_addresses);
1142 if (NULL != s->env->info_cb)
1143 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_START,
1144 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1147 distribute_bandwidth(s, n);
1149 if (NULL != s->env->info_cb)
1150 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_STOP,
1151 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1152 if (NULL != s->env->info_cb)
1153 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
1154 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1156 /* Do propagation */
1157 propagate_bandwidth (s, n);
1159 if (NULL != s->env->info_cb)
1160 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
1161 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1166 if (NULL != s->env->info_cb)
1167 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_START,
1168 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1169 for (i = 0; i < s->network_count; i++)
1172 distribute_bandwidth(s, &s->network_entries[i]);
1175 if (NULL != s->env->info_cb)
1176 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_STOP,
1177 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1178 if (NULL != s->env->info_cb)
1179 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
1180 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1181 for (i = 0; i < s->network_count; i++)
1183 /* Do propagation */
1184 propagate_bandwidth(s, &s->network_entries[i]);
1186 if (NULL != s->env->info_cb)
1187 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
1188 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1194 * Update active address for a peer:
1195 * Check if active address exists and what the best address is, if addresses
1196 * are different switch
1198 * @param s solver handle
1199 * @param peer the peer to check
1200 * return the new address or NULL if no update was performed
1202 static struct ATS_Address *
1203 update_active_address (struct GAS_PROPORTIONAL_Handle *s,
1204 const struct GNUNET_PeerIdentity *peer)
1206 struct ATS_Address *best_address;
1207 struct ATS_Address *current_address;
1208 struct AddressSolverInformation *asi;
1209 struct Network *net;
1211 LOG (GNUNET_ERROR_TYPE_INFO,
1212 "Updating active address for peer `%s'\n",
1215 /* Find active address */
1216 current_address = get_active_address (s,
1220 LOG (GNUNET_ERROR_TYPE_INFO,
1221 "Peer `%s' has active address %p\n",
1225 /* Find best address */
1226 best_address = get_best_address (s,
1229 LOG (GNUNET_ERROR_TYPE_INFO,
1230 "Peer `%s' has best address %p\n",
1234 if (NULL != current_address)
1236 if ( (NULL == best_address) ||
1237 ( (NULL != best_address) &&
1238 (GNUNET_NO == address_eq (current_address,
1241 /* We switch to a new address (or to none),
1242 mark old address as inactive */
1243 LOG (GNUNET_ERROR_TYPE_INFO,
1244 "Disabling previous %s address %p for peer `%s'\n",
1245 (GNUNET_NO == current_address->active) ? "inactive" : "active",
1249 asi = current_address->solver_information;
1250 GNUNET_assert (NULL != asi);
1253 asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
1254 current_address->active = GNUNET_NO; /* No active any longer */
1255 current_address->assigned_bw_in = 0; /* no bandwidth assigned */
1256 current_address->assigned_bw_out = 0; /* no bandwidth assigned */
1258 if (GNUNET_SYSERR == addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
1261 /* Update network of previous address */
1262 distribute_bandwidth_in_network (s, net);
1264 if (NULL == best_address)
1266 /* We previously had an active address, but now we cannot suggest one
1267 * Therefore we have to disconnect the peer */
1268 LOG (GNUNET_ERROR_TYPE_INFO,
1269 "Disconnecting peer `%s' with previous address %p\n",
1272 s->bw_changed (s->bw_changed_cls,
1276 if (NULL == best_address)
1278 LOG (GNUNET_ERROR_TYPE_INFO,
1279 "Cannot suggest address for peer `%s'\n",
1284 LOG (GNUNET_ERROR_TYPE_INFO,
1285 "Suggesting new address %p for peer `%s'\n",
1289 if ( (NULL != current_address) &&
1290 (GNUNET_YES == address_eq (best_address, current_address)) )
1292 GNUNET_break (GNUNET_NO != current_address->active);
1293 return best_address; /* Same same */
1296 asi = best_address->solver_information;
1297 GNUNET_assert (NULL != asi);
1300 /* Mark address as active */
1301 asi->activated = GNUNET_TIME_absolute_get ();
1302 best_address->active = GNUNET_YES;
1303 address_increment (s, net, GNUNET_NO, GNUNET_YES);
1304 LOG (GNUNET_ERROR_TYPE_INFO,
1305 "Address %p for peer `%s' is now active\n",
1308 /* Distribute bandwidth */
1309 distribute_bandwidth_in_network (s, net);
1310 return best_address;
1315 * Changes the preferences for a peer in the problem
1317 * @param solver the solver handle
1318 * @param peer the peer to change the preference for
1319 * @param kind the kind to change the preference
1320 * @param pref_rel the normalized preference value for this kind over all clients
1323 GAS_proportional_address_change_preference (void *solver,
1324 const struct GNUNET_PeerIdentity *peer,
1325 enum GNUNET_ATS_PreferenceKind kind,
1328 struct GAS_PROPORTIONAL_Handle *s = solver;
1329 struct ATS_Address *best_address;
1330 struct ATS_Address *active_address;
1331 struct AddressSolverInformation *asi;
1334 GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1335 return; /* Peer is not requested */
1337 /* This peer is requested, find best address */
1338 active_address = get_active_address (s, s->addresses, peer);
1339 best_address = update_active_address (s, peer);
1341 if ((NULL != best_address) && ((NULL != active_address) &&
1342 (GNUNET_YES == address_eq (active_address, best_address))))
1344 asi = best_address->solver_information;
1345 GNUNET_assert (NULL != asi);
1347 /* We sticked to the same address, therefore redistribute */
1348 distribute_bandwidth_in_network (s, asi->network);
1354 * Get application feedback for a peer
1356 * @param solver the solver handle
1357 * @param application the application
1358 * @param peer the peer to change the preference for
1359 * @param scope the time interval for this feedback: [now - scope .. now]
1360 * @param kind the kind to change the preference
1361 * @param score the score
1364 GAS_proportional_address_preference_feedback (void *solver,
1366 const struct GNUNET_PeerIdentity *peer,
1367 const struct GNUNET_TIME_Relative scope,
1368 enum GNUNET_ATS_PreferenceKind kind,
1371 struct GAS_PROPORTIONAL_Handle *s = solver;
1373 GNUNET_assert(NULL != peer);
1374 GNUNET_assert(NULL != s);
1379 * Get the preferred address for a specific peer
1381 * @param solver the solver handle
1382 * @param peer the identity of the peer
1383 * @return best address
1385 static const struct ATS_Address *
1386 GAS_proportional_get_preferred_address (void *solver,
1387 const struct GNUNET_PeerIdentity *peer)
1389 struct GAS_PROPORTIONAL_Handle *s = solver;
1390 const struct ATS_Address *best_address;
1392 /* Add to list of pending requests */
1394 GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1396 GNUNET_assert (GNUNET_OK ==
1397 GNUNET_CONTAINER_multipeermap_put (s->requests,
1400 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
1401 LOG (GNUNET_ERROR_TYPE_INFO,
1402 "Start suggesting addresses for peer `%s'\n",
1406 best_address = update_active_address (s, peer);
1407 if (s->bulk_lock > 0)
1408 return NULL; /* Do not suggest since bulk lock is pending */
1410 return best_address;
1415 * Stop notifying about address and bandwidth changes for this peer
1417 * @param solver the solver handle
1418 * @param peer the peer
1421 GAS_proportional_stop_get_preferred_address (void *solver,
1422 const struct GNUNET_PeerIdentity *peer)
1424 struct GAS_PROPORTIONAL_Handle *s = solver;
1425 struct ATS_Address *cur;
1426 struct AddressSolverInformation *asi;
1427 struct Network *cur_net;
1430 GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1432 GNUNET_assert (GNUNET_OK ==
1433 GNUNET_CONTAINER_multipeermap_remove (s->requests,
1436 LOG (GNUNET_ERROR_TYPE_INFO,
1437 "Stop suggesting addresses for peer `%s'\n",
1441 cur = get_active_address (s,
1446 LOG (GNUNET_ERROR_TYPE_INFO,
1447 "Disabling %s address %p for peer `%s'\n",
1448 (GNUNET_NO == cur->active) ? "inactive" : "active",
1450 GNUNET_i2s (&cur->peer));
1452 /* Disabling current address */
1453 asi = cur->solver_information;
1454 cur_net = asi->network ;
1455 asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
1456 cur->active = GNUNET_NO; /* No active any longer */
1457 cur->assigned_bw_in = 0; /* no bandwidth assigned */
1458 cur->assigned_bw_out = 0; /* no bandwidth assigned */
1460 if (GNUNET_SYSERR ==
1461 addresse_decrement (s, cur_net, GNUNET_NO, GNUNET_YES))
1464 distribute_bandwidth_in_network (s, cur_net);
1470 * Remove an address from the solver
1472 * @param solver the solver handle
1473 * @param address the address to remove
1474 * @param session_only delete only session not whole address
1477 GAS_proportional_address_delete (void *solver,
1478 struct ATS_Address *address,
1481 struct GAS_PROPORTIONAL_Handle *s = solver;
1482 struct Network *net;
1483 struct AddressWrapper *aw;
1484 struct AddressSolverInformation *asi;
1486 /* Remove an adress completely, we have to:
1487 * - Remove from specific network
1488 * - Decrease number of total addresses
1490 * - decrease number of active addreses
1493 asi = address->solver_information;
1502 if (GNUNET_NO == session_only)
1504 LOG (GNUNET_ERROR_TYPE_INFO,
1505 "Deleting %s address %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
1506 (GNUNET_NO == address->active) ? "inactive" : "active",
1508 GNUNET_i2s (&address->peer),
1510 net->total_addresses,
1511 net->active_addresses);
1513 /* Remove address */
1514 addresse_decrement (s, net, GNUNET_YES, GNUNET_NO);
1515 for (aw = net->head; NULL != aw; aw = aw->next)
1517 if (aw->addr == address)
1525 GNUNET_CONTAINER_DLL_remove (net->head,
1532 /* Remove session only: remove if active and update */
1533 LOG (GNUNET_ERROR_TYPE_INFO,
1534 "Deleting %s session %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
1535 (GNUNET_NO == address->active) ? "inactive" : "active",
1537 GNUNET_i2s (&address->peer),
1539 net->total_addresses,
1540 net->active_addresses);
1543 if (GNUNET_YES == address->active)
1545 /* Address was active, remove from network and update quotas*/
1546 address->active = GNUNET_NO;
1547 address->assigned_bw_in = 0;
1548 address->assigned_bw_out = 0;
1549 asi->calculated_quota_in = 0;
1550 asi->calculated_quota_out = 0;
1552 if (GNUNET_SYSERR ==
1553 addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
1555 distribute_bandwidth_in_network (s, net);
1558 update_active_address (s, &address->peer))
1560 /* No alternative address found, disconnect peer */
1561 LOG (GNUNET_ERROR_TYPE_INFO,
1562 "Disconnecting peer `%s' after deleting previous address %p\n",
1563 GNUNET_i2s (&address->peer),
1565 s->bw_changed (s->bw_changed_cls,
1569 if (GNUNET_NO == session_only)
1571 GNUNET_free_non_null (address->solver_information);
1572 address->solver_information = NULL;
1575 LOG (GNUNET_ERROR_TYPE_INFO,
1576 "After deleting address now total %u and active %u addresses in network `%s'\n",
1577 net->total_addresses,
1578 net->active_addresses,
1584 * Start a bulk operation
1586 * @param solver the solver
1589 GAS_proportional_bulk_start (void *solver)
1591 struct GAS_PROPORTIONAL_Handle *s = solver;
1593 LOG (GNUNET_ERROR_TYPE_DEBUG,
1594 "Locking solver for bulk operation ...\n");
1595 GNUNET_assert (NULL != solver);
1601 * Bulk operation done
1604 GAS_proportional_bulk_stop (void *solver)
1606 struct GAS_PROPORTIONAL_Handle *s = solver;
1608 LOG (GNUNET_ERROR_TYPE_DEBUG,
1609 "Unlocking solver from bulk operation ...\n");
1610 if (s->bulk_lock < 1)
1616 if ((0 == s->bulk_lock) && (0 < s->bulk_requests))
1618 LOG(GNUNET_ERROR_TYPE_INFO, "No lock pending, recalculating\n");
1619 distribute_bandwidth_in_network (s, NULL);
1620 s->bulk_requests = 0;
1626 * Add a new single address to a network
1628 * @param solver the solver Handle
1629 * @param address the address to add
1630 * @param network network type of this address
1633 GAS_proportional_address_add (void *solver,
1634 struct ATS_Address *address,
1639 * Transport properties for this address have changed
1641 * @param solver solver handle
1642 * @param address the address
1643 * @param type the ATSI type in HBO
1644 * @param abs_value the absolute value of the property
1645 * @param rel_value the normalized value
1648 GAS_proportional_address_property_changed (void *solver,
1649 struct ATS_Address *address,
1654 struct GAS_PROPORTIONAL_Handle *s = solver;
1656 struct AddressSolverInformation *asi;
1657 struct ATS_Address *best_address;
1658 struct ATS_Address *active_address;
1660 asi = address->solver_information;
1674 LOG(GNUNET_ERROR_TYPE_INFO,
1675 "Property `%s' for peer `%s' address %p changed to %.2f \n",
1676 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1677 address, rel_value);
1679 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1680 return; /* Peer is not requested */
1682 /* This peer is requested, find active and best address */
1683 active_address = get_active_address(s, s->addresses, &address->peer);
1684 best_address = update_active_address (s,
1687 if ((NULL != best_address) && ((NULL != active_address) &&
1688 (GNUNET_YES == address_eq (active_address, best_address))))
1690 asi = best_address->solver_information;
1691 GNUNET_assert (NULL != asi);
1693 /* We sticked to the same address, therefore redistribute */
1694 distribute_bandwidth_in_network (s, asi->network);
1699 * Transport session for this address has changed
1701 * NOTE: values in addresses are already updated
1703 * @param solver solver handle
1704 * @param address the address
1705 * @param cur_session the current session
1706 * @param new_session the new session
1709 GAS_proportional_address_session_changed (void *solver,
1710 struct ATS_Address *address,
1711 uint32_t cur_session,
1712 uint32_t new_session)
1714 struct GAS_PROPORTIONAL_Handle *s = solver;
1715 struct ATS_Address *best_address;
1716 struct ATS_Address *active_address;
1717 struct AddressSolverInformation *asi;
1719 if (cur_session != new_session)
1721 LOG (GNUNET_ERROR_TYPE_DEBUG,
1722 "Session changed from %u to %u\n",
1727 if (NULL == address->solver_information)
1734 GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1735 return; /* Peer is not requested */
1737 /* This peer is requested, find active and best address */
1738 active_address = get_active_address (s, s->addresses, &address->peer);
1739 best_address = update_active_address (s, &address->peer);
1741 if ((NULL != best_address) && ((NULL != active_address) &&
1742 (GNUNET_YES == address_eq (active_address, best_address))))
1744 asi = best_address->solver_information;
1745 GNUNET_assert (NULL != asi);
1747 /* We sticked to the same address, therefore redistribute */
1748 distribute_bandwidth_in_network (s, asi->network);
1754 * Network scope for this address has changed
1756 * NOTE: values in addresses are already updated
1758 * @param solver solver handle
1759 * @param address the address
1760 * @param current_network the current network
1761 * @param new_network the new network
1764 GAS_proportional_address_change_network (void *solver,
1765 struct ATS_Address *address,
1766 uint32_t current_network,
1767 uint32_t new_network)
1769 struct GAS_PROPORTIONAL_Handle *s = solver;
1770 struct AddressSolverInformation *asi;
1771 int save_active = GNUNET_NO;
1773 if (current_network == new_network)
1779 asi = address->solver_information;
1786 /* Network changed */
1787 LOG(GNUNET_ERROR_TYPE_DEBUG,
1788 "Network type changed, moving %s address from `%s' to `%s'\n",
1789 (GNUNET_YES == address->active) ? "active" : "inactive",
1790 GNUNET_ATS_print_network_type (current_network),
1791 GNUNET_ATS_print_network_type (new_network));
1794 /* Start bulk to prevent disconnect */
1795 GAS_proportional_bulk_start(s);
1797 save_active = address->active;
1799 /* Disable and assign no bandwidth */
1800 address->active = GNUNET_NO;
1801 address->assigned_bw_in = 0; /* no bandwidth assigned */
1802 address->assigned_bw_out = 0; /* no bandwidth assigned */
1804 /* Remove from old network */
1805 GAS_proportional_address_delete (solver, address, GNUNET_NO);
1807 /* Set new network type */
1808 if (NULL == get_network (solver, new_network))
1810 /* Address changed to invalid network... */
1811 LOG(GNUNET_ERROR_TYPE_ERROR,
1812 _("Invalid network type `%u' `%s': Disconnect!\n"), new_network,
1813 GNUNET_ATS_print_network_type (new_network));
1814 s->bw_changed (s->bw_changed_cls, address);
1818 /* Add to new network and update*/
1819 GAS_proportional_address_add (solver, address, new_network);
1821 GAS_proportional_bulk_stop (s);
1823 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1824 return; /* Peer is not requested */
1826 /* Find new address to suggest */
1827 if (GNUNET_YES == save_active)
1829 /* No address available, therefore disconnect */
1830 if (NULL == update_active_address (s, &address->peer))
1831 s->bw_changed (s->bw_changed_cls, address);
1837 * Add a new single address to a network
1839 * @param solver the solver Handle
1840 * @param address the address to add
1841 * @param network network type of this address
1844 GAS_proportional_address_add (void *solver,
1845 struct ATS_Address *address,
1848 struct GAS_PROPORTIONAL_Handle *s = solver;
1849 struct Network *net = NULL;
1850 struct AddressWrapper *aw = NULL;
1851 struct AddressSolverInformation *asi;
1853 GNUNET_assert(NULL != s);
1854 net = get_network (s, network);
1859 LOG(GNUNET_ERROR_TYPE_ERROR,
1860 "Unknown network %u `%s' for new address %p for peer `%s'\n",
1861 network, GNUNET_ATS_print_network_type(network),
1862 address, GNUNET_i2s(&address->peer));
1867 aw = GNUNET_new (struct AddressWrapper);
1869 GNUNET_CONTAINER_DLL_insert(net->head, net->tail, aw);
1870 address_increment (s, net, GNUNET_YES, GNUNET_NO);
1872 asi = GNUNET_new (struct AddressSolverInformation);
1874 asi->calculated_quota_in = 0;
1875 asi->calculated_quota_out = 0;
1876 aw->addr->solver_information = asi;
1878 LOG(GNUNET_ERROR_TYPE_INFO,
1879 "Adding new address %p for peer `%s', now total %u and active %u addresses in network `%s'\n",
1880 address, GNUNET_i2s(&address->peer), net->total_addresses, net->active_addresses, net->desc);
1882 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1883 return; /* Peer is not requested */
1885 /* This peer is requested, find best address */
1886 update_active_address (s, &address->peer);
1892 * Function invoked when the plugin is loaded.
1894 * @param[in,out] cls the `struct GNUNET_ATS_PluginEnvironment *` to use;
1895 * modified to return the API functions (ugh).
1896 * @return the `struct GAS_PROPORTIONAL_Handle` to pass as a closure
1899 libgnunet_plugin_ats_proportional_init (void *cls)
1901 struct GNUNET_ATS_PluginEnvironment *env = cls;
1902 struct GAS_PROPORTIONAL_Handle *s;
1903 struct Network * cur;
1907 GNUNET_assert (NULL != env);
1908 GNUNET_assert (NULL != env->cfg);
1909 GNUNET_assert (NULL != env->bandwidth_changed_cb);
1910 GNUNET_assert (NULL != env->get_preferences);
1911 GNUNET_assert (NULL != env->get_property);
1913 s = GNUNET_new (struct GAS_PROPORTIONAL_Handle);
1915 env->sf.s_add = &GAS_proportional_address_add;
1916 env->sf.s_address_update_property = &GAS_proportional_address_property_changed;
1917 env->sf.s_address_update_session = &GAS_proportional_address_session_changed;
1918 env->sf.s_address_update_network = &GAS_proportional_address_change_network;
1919 env->sf.s_get = &GAS_proportional_get_preferred_address;
1920 env->sf.s_get_stop = &GAS_proportional_stop_get_preferred_address;
1921 env->sf.s_pref = &GAS_proportional_address_change_preference;
1922 env->sf.s_feedback = &GAS_proportional_address_preference_feedback;
1923 env->sf.s_del = &GAS_proportional_address_delete;
1924 env->sf.s_bulk_start = &GAS_proportional_bulk_start;
1925 env->sf.s_bulk_stop = &GAS_proportional_bulk_stop;
1927 s->stats = (struct GNUNET_STATISTICS_Handle *) env->stats;
1928 s->bw_changed = env->bandwidth_changed_cb;
1929 s->bw_changed_cls = env->bw_changed_cb_cls;
1930 s->get_preferences = env->get_preferences;
1931 s->get_preferences_cls = env->get_preference_cls;
1932 s->get_properties = env->get_property;
1933 s->get_properties_cls = env->get_property_cls;
1934 s->network_count = env->network_count;
1935 s->network_entries = GNUNET_malloc (env->network_count * sizeof (struct Network));
1938 s->active_addresses = 0;
1939 s->total_addresses = 0;
1940 s->bulk_lock = GNUNET_NO;
1941 s->addresses = env->addresses;
1942 s->requests = GNUNET_CONTAINER_multipeermap_create (10, GNUNET_NO);
1944 s->stability_factor = PROP_STABILITY_FACTOR;
1945 if (GNUNET_SYSERR !=
1946 GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
1947 "PROP_STABILITY_FACTOR", &f_tmp))
1949 if ((f_tmp < 1.0) || (f_tmp > 2.0))
1951 LOG (GNUNET_ERROR_TYPE_ERROR,
1952 _("Invalid %s configuration %f \n"),
1953 "PROP_STABILITY_FACTOR",
1958 s->stability_factor = f_tmp;
1959 LOG (GNUNET_ERROR_TYPE_INFO,
1960 "Using %s of %.3f\n",
1961 "PROP_STABILITY_FACTOR", f_tmp);
1965 s->prop_factor = PROPORTIONALITY_FACTOR;
1966 if (GNUNET_SYSERR !=
1967 GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
1968 "PROP_PROPORTIONALITY_FACTOR",
1973 LOG (GNUNET_ERROR_TYPE_ERROR,
1974 _("Invalid %s configuration %f \n"),
1975 "PROP_PROPORTIONALITY_FACTOR", f_tmp);
1979 s->prop_factor = f_tmp;
1980 LOG (GNUNET_ERROR_TYPE_INFO,
1981 "Using %s of %.3f\n",
1982 "PROP_PROPORTIONALITY_FACTOR", f_tmp);
1986 for (c = 0; c < env->network_count; c++)
1988 cur = &s->network_entries[c];
1989 cur->type = env->networks[c];
1990 cur->total_quota_in = env->in_quota[c];
1991 cur->total_quota_out = env->out_quota[c];
1992 cur->desc = GNUNET_ATS_print_network_type (c);
1993 GNUNET_asprintf (&cur->stat_total,
1994 "# ATS addresses %s total",
1996 GNUNET_asprintf (&cur->stat_active,
1997 "# ATS active addresses %s total",
1999 LOG (GNUNET_ERROR_TYPE_INFO,
2000 "Added network %u `%s' (%llu/%llu)\n",
2003 cur->total_quota_in,
2004 cur->total_quota_out);
2010 /* end of plugin_ats_proportional.c */