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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-service-ats_addresses.h"
32 #define PROP_STABILITY_FACTOR 1.25
35 #define LOG(kind,...) GNUNET_log_from (kind, "ats-proportional",__VA_ARGS__)
40 * NOTE: Do not change this documentation. This documentation is based
41 * on gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
42 * use build_txt.sh to generate plaintext output
44 * ATS addresses : proportional solver
46 * The proportional solver ("proportional") distributes the available
47 * bandwidth fair over all the addresses influenced by the
48 * preference values. For each available network type an in- and
49 * outbound quota is configured and the bandwidth available in
50 * these networks is distributed over the addresses. The solver
51 * first assigns every addresses the minimum amount of bandwidth
52 * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT and then distributes the
53 * remaining bandwidth available according to the preference
54 * values. For each peer only a single address gets bandwidth
55 * assigned and only one address marked as active. The most
56 * important functionality for the solver is implemented in: *
57 * find_address_it is an hashmap iterator returning the prefered
58 * address for an peer * update_quota_per_network distributes
59 * available bandwidth for a network over active addresses
61 * Changes to addresses automatically have an impact on the the
62 * bandwidth assigned to other addresses in the same network since
63 * the solver distributes the remaining bandwidth over the
64 * addresses in the network. When changes to the addresses occur,
65 * the solver first performs the changes, like adding or deleting
66 * addresses, and then updates bandwidth assignment for the
67 * affected network. Bandwidth assignment is only recalculated on
68 * demand when an address is requested by a client for a peer or
69 * when the addresses available have changed or an address changed
70 * the network it is located in. When the bandwidth assignment has
71 * changed the callback is called with the new bandwidth
72 * assignments. The bandwidth distribution for a network is
73 * recalculated due to: * address suggestion requests * address
74 * deletions * address switching networks during address update *
77 * 3.1 Data structures used
79 * For each ATS network (e.g. WAN, LAN, loopback) a struct Network
80 * is used to specify network related information as total adresses
81 * and active addresses in this network and the configured in- and
82 * outbound quota. Each network also contains a list of addresses
83 * added to the solver located in this network. The proportional
84 * solver uses the addresses' solver_information field to store the
85 * proportional network it belongs to for each address.
89 * When the proportional solver is initialized the solver creates a
90 * new solver handle and initializes the network structures with
91 * the quotas passed from addresses and returns the handle solver.
93 * 3.3 Adding an address
95 * When a new address is added to the solver using s_add, a lookup
96 * for the network for this address is done and the address is
97 * enqueued in in the linked list of the network.
99 * 3.4 Updating an address
101 * The main purpose of address updates is to update the ATS
102 * information for addresse selection. Important for the proportional
103 * solver is when an address switches network it is located
104 * in. This is common because addresses added by transport's
105 * validation mechanism are commonly located in
106 * GNUNET_ATS_NET_UNSPECIFIED. Addresses in validation are located
107 * in this network type and only if a connection is successful on
108 * return of payload data transport switches to the real network
109 * the address is located in. When an address changes networks it
110 * is first of all removed from the old network using the solver
111 * API function #GAS_proportional_address_delete() and the network in
112 * the address struct is updated. A lookup for the respective new
113 * proportional network is done and stored in the addresse's
114 * solver_information field. Next the address is re-added to the
115 * solver using the solver API function
116 * #GAS_proportional_address_add(). If the address was marked as in
117 * active, the solver checks if bandwidth is available in the
118 * network and if yes sets the address to active and updates the
119 * bandwidth distribution in this network. If no bandwidth is
120 * available it sets the bandwidth for this address to 0 and tries
121 * to suggest an alternative address. If an alternative address was
122 * found, addresses' callback is called for this address.
124 * 3.5 Deleting an address
126 * When an address is removed from the solver, it removes the
127 * respective address from the network and if the address was
128 * marked as active, it updates the bandwidth distribution for this
131 * 3.6 Requesting addresses
133 * When an address is requested for a peer the solver performs a
134 * lookup for the peer entry in addresses address hashmap and
135 * selects the best address. The selection of the most suitable
136 * address is done in the find_address_it hashmap iterator
137 * described in detail in section 3.7. If no address is returned,
138 * no address can be suggested at the moment. If the address
139 * returned is marked as active, the solver can return this
140 * address. If the address is not marked as active, the solver
141 * checks if another address belongign to this peer is marked as
142 * active and marks the address as inactive, updates the bandwidth
143 * for this address to 0, call the bandwidth changed callback for
144 * this address due to the change and updates quota assignment for
145 * the addresse's network. the now in-active address is belonging
146 * to. The solver marks the new address as active and updates the
147 * bandwidth assignment for this network.
149 * 3.7 Choosing addresses
151 * Choosing the best possible address for suggestion is done by
152 * iterating over all addresses of a peer stored in addresses'
153 * hashmap and using the hashmap iterator find_address_it to select
154 * the best available address. Several checks are done when an
155 * address is selected. First if this address is currently blocked
156 * by addresses from being suggested. An address is blocked for the
157 * duration of ATS_BLOCKING_DELTA when it is suggested to
158 * transport. Next it is checked if at least
159 * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT bytes bandwidth is available
160 * in the addresse's network, because suggesting an address without
161 * bandwidth does not make sense. This also ensures that all active
162 * addresses in this network get at least the minimum amount of
163 * bandwidth assigned. In the next step the solver ensures that for
164 * tcp connections inbound connections are prefered over outbound
165 * connections. In the next stet the solver ensures that
166 * connections are prefered in the following order: * connections
167 * are already established and have bandwidth assigned *
168 * connections with a shorter distance * connectes have a shorter
171 * 3.8 Changing preferences
175 * During shutdown all network entries and aging processes are
176 * destroyed and freed.
181 * This solver assigns in and outbound bandwidth equally for all
182 * addresses in specific network type (WAN, LAN) based on configured
183 * in and outbound quota for this network.
185 * The solver is notified by addresses about changes to the addresses
186 * and recalculates the bandwith assigned if required. The solver
187 * notifies addresses by calling the GAS_bandwidth_changed_cb
195 * For each peer only a single is selected and marked as "active" in the address
200 * You have the networks WAN and LAN and quotas
201 * WAN_TOTAL_IN, WAN_TOTAL_OUT
202 * LAN_TOTAL_IN, LAN_TOTAL_OUT
204 * If you have x addresses in the network segment LAN, the quotas are
205 * QUOTA_PER_ADDRESS = LAN_TOTAL_OUT / x
207 * Quotas are automatically recalculated and reported back when addresses are
212 #define PROPORTIONALITY_FACTOR 2.0
215 * A handle for the proportional solver
217 struct GAS_PROPORTIONAL_Handle
219 struct GNUNET_ATS_PluginEnvironment *env;
224 struct GNUNET_STATISTICS_Handle *stats;
227 * Hashmap containing all valid addresses
229 struct GNUNET_CONTAINER_MultiPeerMap *addresses;
232 * Pending address requests
234 struct GNUNET_CONTAINER_MultiPeerMap *requests;
237 * Bandwidth changed callback
239 GAS_bandwidth_changed_cb bw_changed;
242 * Bandwidth changed callback cls
244 void *bw_changed_cls;
247 * ATS function to get preferences
249 GAS_get_preferences get_preferences;
252 * Closure for ATS function to get preferences
254 void *get_preferences_cls;
257 * ATS function to get properties
259 GAS_get_properties get_properties;
262 * Closure for ATS function to get properties
264 void *get_properties_cls;
272 * Number of changes while solver was locked
277 * Total number of addresses for solver
279 unsigned int total_addresses;
282 * Number of active addresses for solver
284 unsigned int active_addresses;
289 struct Network *network_entries;
294 unsigned int network_count;
297 * Proportionality factor
304 double stability_factor;
308 * Representation of a network
318 * Network description
323 * Total inbound quota
326 unsigned long long total_quota_in;
329 * Total outbound quota
332 unsigned long long total_quota_out;
335 * Number of active addresses for this network
337 unsigned int active_addresses;
340 * Number of total addresses for this network
342 unsigned int total_addresses;
345 * String for statistics total addresses
350 * String for statistics active addresses
357 struct AddressWrapper *head;
362 struct AddressWrapper *tail;
366 * Address information stored in the solver
368 struct AddressSolverInformation
370 struct Network *network;
376 unsigned long long calculated_quota_in_NBO;
382 unsigned long long calculated_quota_out_NBO;
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 GNUNET_assert(s != NULL);
427 for (c = 0; c < s->network_count; c++)
429 if (s->network_entries[c].total_addresses > 0)
431 LOG(GNUNET_ERROR_TYPE_DEBUG,
432 "Had %u addresses for network `%s' not deleted during shutdown\n",
433 s->network_entries[c].total_addresses, s->network_entries[c].desc);
437 if (s->network_entries[c].active_addresses > 0)
439 LOG(GNUNET_ERROR_TYPE_DEBUG,
440 "Had %u active addresses for network `%s' not deleted during shutdown\n",
441 s->network_entries[c].active_addresses, s->network_entries[c].desc);
445 next = s->network_entries[c].head;
446 while (NULL != (cur = next))
449 GNUNET_CONTAINER_DLL_remove(s->network_entries[c].head,
450 s->network_entries[c].tail, cur);
451 GNUNET_free_non_null (cur->addr->solver_information);
454 GNUNET_free(s->network_entries[c].stat_total);
455 GNUNET_free(s->network_entries[c].stat_active);
457 if (s->total_addresses > 0)
459 LOG(GNUNET_ERROR_TYPE_DEBUG,
460 "Had %u addresses not deleted during shutdown\n", s->total_addresses);
463 if (s->active_addresses > 0)
465 LOG(GNUNET_ERROR_TYPE_DEBUG,
466 "Had %u active addresses not deleted during shutdown\n",
467 s->active_addresses);
470 GNUNET_free (s->network_entries);
471 GNUNET_CONTAINER_multipeermap_destroy (s->requests);
478 * Test if bandwidth is available in this network to add an additional address
480 * @param net the network type to update
481 * @return #GNUNET_YES or #GNUNET_NO
484 is_bandwidth_available_in_network (struct Network *net)
486 GNUNET_assert(NULL != net);
487 unsigned int na = net->active_addresses + 1;
488 uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
489 if (((net->total_quota_in / na) > min_bw)
490 && ((net->total_quota_out / na) > min_bw))
492 LOG(GNUNET_ERROR_TYPE_DEBUG,
493 "Enough bandwidth available for %u active addresses in network `%s'\n",
498 LOG(GNUNET_ERROR_TYPE_DEBUG,
499 "Not enough bandwidth available for %u active addresses in network `%s'\n",
506 * Update bandwidth assigned to peers in this network
508 * @param s the solver handle
509 * @param net the network type to update
513 distribute_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
516 struct AddressSolverInformation *asi;
517 struct AddressWrapper *cur_address;
519 unsigned long long remaining_quota_in = 0;
520 unsigned long long quota_out_used = 0;
521 unsigned long long remaining_quota_out = 0;
522 unsigned long long quota_in_used = 0;
524 uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
525 double relative_peer_prefence;
526 double sum_relative_peer_prefences; /* Important: has to be double not float due to precision */
527 double cur_pref; /* Important: has to be double not float due to precision */
530 const double *peer_relative_prefs = NULL; /* Important: has to be double not float due to precision */
532 unsigned long long assigned_quota_in = 0;
533 unsigned long long assigned_quota_out = 0;
536 LOG(GNUNET_ERROR_TYPE_INFO,
537 "Recalculate quota for network type `%s' for %u addresses (in/out): %llu/%llu \n",
538 net->desc, net->active_addresses, net->total_quota_in,
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,
565 "Remaining bandwidth : (in/out): %llu/%llu \n",
566 remaining_quota_in, remaining_quota_out);
567 sum_relative_peer_prefences = 0.0;
569 /* Calculate sum of relative preference for active addresses in this network */
571 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
573 if (GNUNET_YES != cur_address->addr->active)
576 GNUNET_assert( NULL != (peer_relative_prefs = s->get_preferences (s->get_preferences_cls,
577 &cur_address->addr->peer)));
578 relative_peer_prefence = 0.0;
579 relative_peer_prefence += peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
580 sum_relative_peer_prefences += relative_peer_prefence;
584 if (count_addresses != net->active_addresses)
586 LOG ( (count_addresses > net->active_addresses)
587 ? GNUNET_ERROR_TYPE_WARNING
588 : GNUNET_ERROR_TYPE_INFO,
589 "%s: Counted %u active addresses, but network says to have %u active addresses \n",
592 net->active_addresses);
593 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
595 if (GNUNET_YES != cur_address->addr->active)
597 LOG (GNUNET_ERROR_TYPE_WARNING,
598 "Active: `%s' `%s' length %u\n",
599 GNUNET_i2s (&cur_address->addr->peer),
600 cur_address->addr->plugin,
601 cur_address->addr->addr_len);
605 LOG (GNUNET_ERROR_TYPE_INFO,
606 "Total relative preference %.3f for %u addresses in network %s\n",
607 sum_relative_peer_prefences, net->active_addresses, net->desc);
609 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
611 if (GNUNET_YES == cur_address->addr->active)
613 GNUNET_assert( NULL != (peer_relative_prefs =
614 s->get_preferences (s->get_preferences_cls, &cur_address->addr->peer)));
616 cur_pref = peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
617 total_weight = net->active_addresses +
618 s->prop_factor * sum_relative_peer_prefences;
619 peer_weight = (1.0 + (s->prop_factor * cur_pref));
621 assigned_quota_in = min_bw
622 + ((peer_weight / total_weight) * remaining_quota_in);
623 assigned_quota_out = min_bw
624 + ((peer_weight / total_weight) * remaining_quota_out);
626 LOG (GNUNET_ERROR_TYPE_INFO,
627 "New quota for peer `%s' with weight (cur/total) %.3f/%.3f (in/out): %llu / %llu\n",
628 GNUNET_i2s (&cur_address->addr->peer), peer_weight, total_weight,
629 assigned_quota_in, assigned_quota_out);
633 assigned_quota_in = 0;
634 assigned_quota_out = 0;
637 quota_in_used += assigned_quota_in;
638 quota_out_used += assigned_quota_out;
639 /* Prevent overflow due to rounding errors */
640 if (assigned_quota_in > UINT32_MAX)
641 assigned_quota_in = UINT32_MAX;
642 if (assigned_quota_out > UINT32_MAX)
643 assigned_quota_out = UINT32_MAX;
645 /* Compare to current bandwidth assigned */
646 asi = cur_address->addr->solver_information;
647 asi->calculated_quota_in_NBO = htonl (assigned_quota_in);
648 asi->calculated_quota_out_NBO = htonl (assigned_quota_out);
650 LOG(GNUNET_ERROR_TYPE_DEBUG,
651 "Total bandwidth assigned is (in/out): %llu /%llu\n", quota_in_used,
653 if (quota_out_used > net->total_quota_out + 1) /* +1 is required due to rounding errors */
655 LOG(GNUNET_ERROR_TYPE_ERROR,
656 "Total outbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
657 net->active_addresses, quota_out_used, net->total_quota_out);
659 if (quota_in_used > net->total_quota_in + 1) /* +1 is required due to rounding errors */
661 LOG(GNUNET_ERROR_TYPE_ERROR,
662 "Total inbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
663 net->active_addresses, quota_in_used, net->total_quota_in);
671 struct FindBestAddressCtx
673 struct GAS_PROPORTIONAL_Handle *s;
674 struct ATS_Address *best;
682 find_property_index (uint32_t type)
684 int existing_types[] = GNUNET_ATS_QualityProperties;
687 for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
688 if (existing_types[c] == type)
690 return GNUNET_SYSERR;
695 * Find a "good" address to use for a peer by iterating over the addresses for this peer.
696 * If we already have an existing address, we stick to it.
697 * Otherwise, we pick by lowest distance and then by lowest latency.
699 * @param cls the `struct FindBestAddressCtx *' where we store the result
701 * @param value another `struct ATS_Address*` to consider using
702 * @return #GNUNET_OK (continue to iterate)
705 find_best_address_it (void *cls,
706 const struct GNUNET_PeerIdentity *key,
709 struct FindBestAddressCtx *ctx = cls;
710 struct ATS_Address *current = value;
711 struct ATS_Address *current_best = current;
712 struct GNUNET_TIME_Absolute now;
713 struct AddressSolverInformation *asi;
714 struct GNUNET_TIME_Relative active_time;
715 struct GNUNET_TIME_Relative min_active_time;
716 const double *norm_prop_cur;
717 const double *norm_prop_best;
719 double best_distance;
725 asi = current->solver_information;
726 now = GNUNET_TIME_absolute_get ();
728 if ((current->active == GNUNET_NO)
729 && (current->blocked_until.abs_value_us
730 == GNUNET_TIME_absolute_max (now, current->blocked_until).abs_value_us))
732 /* This address is blocked for suggestion */
733 LOG (GNUNET_ERROR_TYPE_DEBUG,
734 "Address %p blocked for suggestion for %s \n",
736 GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_difference (now, current->blocked_until),
746 if (GNUNET_NO == is_bandwidth_available_in_network (asi->network))
748 return GNUNET_OK; /* There's no bandwidth available in this network */
751 if (NULL != ctx->best)
753 /* Compare current addresses with denominated 'best' address */
754 current_best = ctx->best;
758 /* We do not have a 'best' address so take this address */
759 LOG (GNUNET_ERROR_TYPE_DEBUG,
760 "Setting initial address %p\n",
762 current_best = current;
766 if (GNUNET_YES == current->active)
768 GNUNET_assert (asi->activated.abs_value_us != GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us);
769 active_time = GNUNET_TIME_absolute_get_duration (asi->activated);
770 min_active_time.rel_value_us = ((double) GNUNET_TIME_UNIT_SECONDS.rel_value_us) *
771 PROP_STABILITY_FACTOR;
772 if (active_time.rel_value_us <= min_active_time.rel_value_us)
774 /* Keep active address for stability reasons */
780 /* Now compare ATS information */
781 norm_prop_cur = ctx->s->get_properties (ctx->s->get_properties_cls,
782 (const struct ATS_Address *) current);
783 index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
784 cur_distance = norm_prop_cur[index];
785 index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
786 cur_delay = norm_prop_cur[index];
788 norm_prop_best = ctx->s->get_properties (ctx->s->get_properties_cls,
789 (const struct ATS_Address *) ctx->best);
790 index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
791 best_distance = norm_prop_best[index];
792 index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
793 best_delay = norm_prop_best[index];
795 /* user shorter distance */
796 if (cur_distance < best_distance)
799 if (GNUNET_NO == ctx->best->active)
801 current_best = current; /* Use current */
803 else if ((best_distance / cur_distance) > ctx->s->stability_factor)
805 /* Best and active address performs worse */
806 current_best = current;
811 /* Use current best */
812 current_best = ctx->best;
815 /* User connection with less delay */
816 if (cur_delay < best_delay)
819 if (GNUNET_NO == ctx->best->active)
821 current_best = current; /* Use current */
823 else if ((best_delay / cur_delay) > ctx->s->stability_factor)
825 /* Best and active address performs worse */
826 current_best = current;
831 /* Use current best */
832 current_best = ctx->best;
836 ctx->best = current_best;
845 get_best_address (struct GAS_PROPORTIONAL_Handle *s,
846 struct GNUNET_CONTAINER_MultiPeerMap *addresses,
847 const struct GNUNET_PeerIdentity *id)
849 struct FindBestAddressCtx fba_ctx;
853 GNUNET_CONTAINER_multipeermap_get_multiple (addresses, id,
854 &find_best_address_it, &fba_ctx);
861 * Hashmap Iterator to find current active address for peer
863 * @param cls last active address
864 * @param key peer's key
865 * @param value address to check
866 * @return #GNUNET_NO on double active address else #GNUNET_YES;
869 get_active_address_it (void *cls,
870 const struct GNUNET_PeerIdentity *key,
873 struct ATS_Address **dest = cls;
874 struct ATS_Address *aa = (struct ATS_Address *) value;
876 if (GNUNET_YES == aa->active)
881 /* should never happen */
882 LOG (GNUNET_ERROR_TYPE_ERROR,
883 "Multiple active addresses for peer `%s'\n",
884 GNUNET_i2s (&aa->peer));
895 * Find current active address for peer
897 * @param solver the solver handle
898 * @param addresses the address set
899 * @param peer the peer
900 * @return active address or NULL
902 static struct ATS_Address *
903 get_active_address (void *solver,
904 const struct GNUNET_CONTAINER_MultiPeerMap * addresses,
905 const struct GNUNET_PeerIdentity *peer)
907 struct ATS_Address * dest = NULL;
909 GNUNET_CONTAINER_multipeermap_get_multiple (addresses, peer,
910 &get_active_address_it, &dest);
916 * Lookup network struct by type
918 * @param s the solver handle
919 * @param type the network type
920 * @return the network struct
922 static struct Network *
923 get_network (struct GAS_PROPORTIONAL_Handle *s, uint32_t type)
926 for (c = 0; c < s->network_count; c++)
928 if (s->network_entries[c].type == type)
929 return &s->network_entries[c];
936 * FIXME. Degermanize.
939 addresse_increment (struct GAS_PROPORTIONAL_Handle *s,
944 if (GNUNET_YES == total)
946 s->total_addresses++;
947 net->total_addresses++;
948 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", 1, GNUNET_NO);
949 GNUNET_STATISTICS_update (s->stats, net->stat_total, 1, GNUNET_NO);
951 if (GNUNET_YES == active)
953 net->active_addresses++;
954 s->active_addresses++;
955 GNUNET_STATISTICS_update (s->stats, "# ATS active addresses total", 1,
957 GNUNET_STATISTICS_update (s->stats, net->stat_active, 1, GNUNET_NO);
964 * FIXME. Degermanize.
967 addresse_decrement (struct GAS_PROPORTIONAL_Handle *s,
974 if (GNUNET_YES == total)
976 if (s->total_addresses < 1)
983 s->total_addresses--;
984 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", -1,
987 if (net->total_addresses < 1)
994 net->total_addresses--;
995 GNUNET_STATISTICS_update (s->stats, net->stat_total, -1, GNUNET_NO);
999 if (GNUNET_YES == active)
1001 if (net->active_addresses < 1)
1004 res = GNUNET_SYSERR;
1008 net->active_addresses--;
1009 GNUNET_STATISTICS_update (s->stats, net->stat_active, -1, GNUNET_NO);
1011 if (s->active_addresses < 1)
1014 res = GNUNET_SYSERR;
1018 s->active_addresses--;
1019 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", -1,
1031 address_eq (struct ATS_Address *a, struct ATS_Address *b)
1033 GNUNET_assert (NULL != a);
1034 GNUNET_assert (NULL != b);
1035 if (0 != strcmp(a->plugin, b->plugin))
1037 if (a->addr_len != b->addr_len)
1039 if (0 != memcmp (a->addr, b->addr, b->addr_len))
1041 if (a->session_id != b->session_id)
1051 propagate_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
1052 struct Network *net)
1054 struct AddressWrapper *cur;
1055 struct AddressSolverInformation *asi;
1056 for (cur = net->head; NULL != cur; cur = cur->next)
1058 asi = cur->addr->solver_information;
1059 if ( (cur->addr->assigned_bw_in.value__ != asi->calculated_quota_in_NBO) ||
1060 (cur->addr->assigned_bw_out.value__ != asi->calculated_quota_out_NBO) )
1062 cur->addr->assigned_bw_in.value__ = asi->calculated_quota_in_NBO;
1063 cur->addr->assigned_bw_out.value__ = asi->calculated_quota_out_NBO;
1065 /* Reset for next iteration */
1066 asi->calculated_quota_in_NBO = htonl (0);
1067 asi->calculated_quota_out_NBO = htonl (0);
1069 LOG (GNUNET_ERROR_TYPE_DEBUG,
1070 "Bandwidth for %s address %p for peer `%s' changed to %u/%u\n",
1071 (GNUNET_NO == cur->addr->active) ? "inactive" : "active",
1073 GNUNET_i2s (&cur->addr->peer),
1074 ntohl (cur->addr->assigned_bw_in.value__),
1075 ntohl (cur->addr->assigned_bw_out.value__ ));
1077 /* Notify on change */
1078 if ((GNUNET_YES == cur->addr->active))
1080 s->bw_changed (s->bw_changed_cls, cur->addr);
1088 * Distribibute bandwidth
1090 * @param s the solver handle
1091 * @param n the network, can be NULL for all network
1092 * @param address_except do not notify for this address
1095 distribute_bandwidth_in_network (struct GAS_PROPORTIONAL_Handle *s,
1098 if (GNUNET_YES == s->bulk_lock)
1106 LOG (GNUNET_ERROR_TYPE_INFO,
1107 "Redistributing bandwidth in network %s with %u active and %u total addresses\n",
1108 GNUNET_ATS_print_network_type(n->type),
1109 n->active_addresses, n->total_addresses);
1111 if (NULL != s->env->info_cb)
1112 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_START,
1113 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1116 distribute_bandwidth(s, n);
1118 if (NULL != s->env->info_cb)
1119 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_STOP,
1120 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1121 if (NULL != s->env->info_cb)
1122 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
1123 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1125 /* Do propagation */
1126 propagate_bandwidth (s, n);
1128 if (NULL != s->env->info_cb)
1129 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
1130 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1135 if (NULL != s->env->info_cb)
1136 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_START,
1137 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1138 for (i = 0; i < s->network_count; i++)
1141 distribute_bandwidth(s, &s->network_entries[i]);
1144 if (NULL != s->env->info_cb)
1145 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_STOP,
1146 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1147 if (NULL != s->env->info_cb)
1148 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
1149 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1150 for (i = 0; i < s->network_count; i++)
1152 /* Do propagation */
1153 propagate_bandwidth(s, &s->network_entries[i]);
1155 if (NULL != s->env->info_cb)
1156 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
1157 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1165 static const struct ATS_Address *
1166 update_active_address (struct GAS_PROPORTIONAL_Handle *s,
1167 const struct GNUNET_PeerIdentity *peer)
1169 struct ATS_Address *best_address;
1170 struct ATS_Address *current_address;
1171 struct AddressSolverInformation *asi;
1172 struct Network *net;
1174 LOG (GNUNET_ERROR_TYPE_INFO,
1175 "Updating active address for peer `%s'\n",
1178 /* Find active address */
1179 current_address = get_active_address (s, s->addresses, peer);
1180 /* Find best address */
1181 best_address = get_best_address (s,s->addresses, peer);
1183 if (NULL != current_address)
1185 if ((NULL == best_address) || ((NULL != best_address) &&
1186 (GNUNET_NO == address_eq (current_address, best_address))))
1188 /* We switch to a new address, mark old address as inactive */
1189 LOG (GNUNET_ERROR_TYPE_INFO,
1190 "Disabling previous %s address %p for peer `%s'\n",
1191 (GNUNET_NO == current_address->active) ? "inactive" : "active",
1195 asi = current_address->solver_information;
1196 GNUNET_assert (NULL != asi);
1199 asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
1200 current_address->active = GNUNET_NO; /* No active any longer */
1201 current_address->assigned_bw_in = BANDWIDTH_ZERO; /* no bandwidth assigned */
1202 current_address->assigned_bw_out = BANDWIDTH_ZERO; /* no bandwidth assigned */
1204 if (GNUNET_SYSERR == addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
1207 /* Update network of previous address */
1208 distribute_bandwidth_in_network (s, net);
1210 if (NULL == best_address)
1212 /* We previously had an active address, but now we cannot suggest one
1213 * Therefore we have to disconnect the peer */
1215 LOG (GNUNET_ERROR_TYPE_INFO,
1216 "Disconnecting peer `%s' with previous %s address %p\n",
1218 (GNUNET_NO == current_address->active) ? "inactive" : "active",
1220 s->bw_changed (s->bw_changed_cls, current_address);
1224 if (NULL == best_address)
1226 LOG (GNUNET_ERROR_TYPE_INFO, "Cannot suggest address for peer `%s'\n",
1231 LOG (GNUNET_ERROR_TYPE_INFO, "Suggesting %s address %p for peer `%s'\n",
1232 (GNUNET_NO == best_address->active) ? "inactive" : "active", best_address,
1235 if ((NULL != current_address) &&
1236 (GNUNET_YES == address_eq (best_address, current_address)))
1238 if (current_address->active == GNUNET_NO)
1239 GNUNET_break (0); /* Should never happen */
1240 return best_address; /* Same same */
1243 asi = best_address->solver_information;
1244 GNUNET_assert (NULL != asi);
1247 /* Mark address as active */
1248 asi->activated = GNUNET_TIME_absolute_get();
1249 best_address->active = GNUNET_YES;
1250 addresse_increment (s, net, GNUNET_NO, GNUNET_YES);
1252 /* Distribute bandwidth */
1253 distribute_bandwidth_in_network (s, net);
1254 return best_address;
1259 * Changes the preferences for a peer in the problem
1261 * @param solver the solver handle
1262 * @param peer the peer to change the preference for
1263 * @param kind the kind to change the preference
1264 * @param pref_rel the normalized preference value for this kind over all clients
1267 GAS_proportional_address_change_preference (void *solver,
1268 const struct GNUNET_PeerIdentity *peer,
1269 enum GNUNET_ATS_PreferenceKind kind,
1272 struct GAS_PROPORTIONAL_Handle *s = solver;
1273 struct ATS_Address *best_address;
1274 struct ATS_Address *active_address;
1275 struct AddressSolverInformation *asi;
1277 GNUNET_assert(NULL != s);
1278 GNUNET_assert(NULL != peer);
1280 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1281 return; /* Peer is not requested */
1283 /* This peer is requested, find best address */
1284 active_address = get_active_address(s, s->addresses, peer);
1285 best_address = (struct ATS_Address *) update_active_address (s, peer);
1287 if ((NULL != best_address) && ((NULL != active_address) &&
1288 (GNUNET_YES == address_eq (active_address, best_address))))
1290 asi = best_address->solver_information;
1291 GNUNET_assert (NULL != asi);
1293 /* We sticked to the same address, therefore redistribute */
1294 distribute_bandwidth_in_network (s, asi->network);
1300 * Get application feedback for a peer
1302 * @param solver the solver handle
1303 * @param application the application
1304 * @param peer the peer to change the preference for
1305 * @param scope the time interval for this feedback: [now - scope .. now]
1306 * @param kind the kind to change the preference
1307 * @param score the score
1310 GAS_proportional_address_preference_feedback (void *solver,
1312 const struct GNUNET_PeerIdentity *peer,
1313 const struct GNUNET_TIME_Relative scope,
1314 enum GNUNET_ATS_PreferenceKind kind,
1317 struct GAS_PROPORTIONAL_Handle *s = solver;
1319 GNUNET_assert(NULL != peer);
1320 GNUNET_assert(NULL != s);
1325 * Get the preferred address for a specific peer
1327 * @param solver the solver handle
1328 * @param peer the identity of the peer
1331 static const struct ATS_Address *
1332 GAS_proportional_get_preferred_address (void *solver,
1333 const struct GNUNET_PeerIdentity *peer)
1335 struct GAS_PROPORTIONAL_Handle *s = solver;
1336 const struct ATS_Address *best_address;
1339 GNUNET_assert(s != NULL);
1340 GNUNET_assert(peer != NULL);
1342 /* Add to list of pending requests */
1343 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1346 GNUNET_OK == GNUNET_CONTAINER_multipeermap_put (s->requests, peer, NULL,
1347 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
1348 LOG (GNUNET_ERROR_TYPE_INFO, "Start suggesting addresses for peer `%s'\n",
1352 best_address = update_active_address (s, peer);
1353 if (s->bulk_lock > 0)
1354 return NULL; /* Do not suggest since bulk lock is pending */
1356 return best_address;
1361 * Stop notifying about address and bandwidth changes for this peer
1363 * @param solver the solver handle
1364 * @param peer the peer
1367 GAS_proportional_stop_get_preferred_address (void *solver,
1368 const struct GNUNET_PeerIdentity *peer)
1370 struct GAS_PROPORTIONAL_Handle *s = solver;
1371 struct ATS_Address *cur;
1372 struct AddressSolverInformation *asi;
1373 struct Network *cur_net;
1375 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1376 GNUNET_assert (GNUNET_OK == GNUNET_CONTAINER_multipeermap_remove (s->requests,
1379 cur = get_active_address (s, s->addresses, peer);
1382 LOG(GNUNET_ERROR_TYPE_INFO,
1383 "Disabling %s address %p for peer `%s'\n",
1384 (GNUNET_NO == cur->active) ? "inactive" : "active", cur,
1385 GNUNET_i2s (&cur->peer));
1387 /* Disabling current address */
1388 asi = cur->solver_information;
1389 cur_net = asi->network ;
1390 asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
1391 cur->active = GNUNET_NO; /* No active any longer */
1392 cur->assigned_bw_in = BANDWIDTH_ZERO; /* no bandwidth assigned */
1393 cur->assigned_bw_out = BANDWIDTH_ZERO; /* no bandwidth assigned */
1395 if (GNUNET_SYSERR == addresse_decrement (s, cur_net, GNUNET_NO, GNUNET_YES))
1398 distribute_bandwidth_in_network (s, cur_net );
1405 * Remove an address from the solver
1407 * @param solver the solver handle
1408 * @param address the address to remove
1409 * @param session_only delete only session not whole address
1412 GAS_proportional_address_delete (void *solver,
1413 struct ATS_Address *address,
1416 struct GAS_PROPORTIONAL_Handle *s = solver;
1417 struct Network *net;
1418 struct AddressWrapper *aw;
1419 struct AddressSolverInformation *asi;
1421 /* Remove an adress completely, we have to:
1422 * - Remove from specific network
1423 * - Decrease number of total addresses
1425 * - decrease number of active addreses
1428 asi = address->solver_information;
1437 if (GNUNET_NO == session_only)
1439 LOG(GNUNET_ERROR_TYPE_INFO,
1440 "Deleting %s address %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
1441 (GNUNET_NO == address->active) ? "inactive" : "active", address,
1442 GNUNET_i2s (&address->peer), net->desc, net->total_addresses,
1443 net->active_addresses);
1445 /* Remove address */
1446 addresse_decrement (s, net, GNUNET_YES, GNUNET_NO);
1447 for (aw = net->head; NULL != aw; aw = aw->next)
1449 if (aw->addr == address)
1457 GNUNET_CONTAINER_DLL_remove(net->head, net->tail, aw);
1462 /* Remove session only: remove if active and update */
1463 LOG(GNUNET_ERROR_TYPE_INFO,
1464 "Deleting %s session %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
1465 (GNUNET_NO == address->active) ? "inactive" : "active", address,
1466 GNUNET_i2s (&address->peer), net->desc, net->total_addresses,
1467 net->active_addresses);
1470 if (GNUNET_YES == address->active)
1472 /* Address was active, remove from network and update quotas*/
1473 address->active = GNUNET_NO;
1474 address->assigned_bw_in = BANDWIDTH_ZERO;
1475 address->assigned_bw_out = BANDWIDTH_ZERO;
1476 asi->calculated_quota_in_NBO = htonl (0);
1477 asi->calculated_quota_out_NBO = htonl (0);
1479 if (GNUNET_SYSERR == addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
1481 distribute_bandwidth_in_network (s, net);
1483 if (NULL == update_active_address (s, &address->peer))
1485 /* No alternative address found, disconnect peer */
1486 LOG (GNUNET_ERROR_TYPE_INFO,
1487 "Disconnecting peer `%s' after deleting previous %s address %p\n",
1488 GNUNET_i2s (&address->peer),
1489 (GNUNET_NO == address->active) ? "inactive" : "active",
1491 s->bw_changed (s->bw_changed_cls, address);
1494 if (GNUNET_NO == session_only)
1496 GNUNET_free_non_null (address->solver_information);
1497 address->solver_information = NULL;
1500 LOG(GNUNET_ERROR_TYPE_INFO,
1501 "After deleting address now total %u and active %u addresses in network `%s'\n",
1502 net->total_addresses, net->active_addresses, net->desc);
1508 * Start a bulk operation
1510 * @param solver the solver
1513 GAS_proportional_bulk_start (void *solver)
1515 struct GAS_PROPORTIONAL_Handle *s = solver;
1517 LOG (GNUNET_ERROR_TYPE_DEBUG,
1518 "Locking solver for bulk operation ...\n");
1519 GNUNET_assert(NULL != solver);
1525 * Bulk operation done
1528 GAS_proportional_bulk_stop (void *solver)
1530 struct GAS_PROPORTIONAL_Handle *s = solver;
1532 LOG (GNUNET_ERROR_TYPE_DEBUG,
1533 "Unlocking solver from bulk operation ...\n");
1534 GNUNET_assert(NULL != solver);
1536 if (s->bulk_lock < 1)
1542 if ((0 == s->bulk_lock) && (0 < s->bulk_requests))
1544 LOG(GNUNET_ERROR_TYPE_INFO, "No lock pending, recalculating\n");
1545 distribute_bandwidth_in_network (s, NULL);
1546 s->bulk_requests = 0;
1552 * Add a new single address to a network
1554 * @param solver the solver Handle
1555 * @param address the address to add
1556 * @param network network type of this address
1559 GAS_proportional_address_add (void *solver,
1560 struct ATS_Address *address,
1565 * Transport properties for this address have changed
1567 * @param solver solver handle
1568 * @param address the address
1569 * @param type the ATSI type in HBO
1570 * @param abs_value the absolute value of the property
1571 * @param rel_value the normalized value
1574 GAS_proportional_address_property_changed (void *solver,
1575 struct ATS_Address *address,
1580 struct GAS_PROPORTIONAL_Handle *s = solver;
1582 struct AddressSolverInformation *asi;
1583 struct ATS_Address *best_address;
1584 struct ATS_Address *active_address;
1586 GNUNET_assert(NULL != s);
1587 GNUNET_assert(NULL != address);
1588 asi = address->solver_information;
1602 LOG(GNUNET_ERROR_TYPE_INFO,
1603 "Property `%s' for peer `%s' address %p changed to %.2f \n",
1604 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1605 address, rel_value);
1607 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1608 return; /* Peer is not requested */
1610 /* This peer is requested, find active and best address */
1611 active_address = get_active_address(s, s->addresses, &address->peer);
1612 best_address = (struct ATS_Address *) update_active_address (s, &address->peer);
1614 if ((NULL != best_address) && ((NULL != active_address) &&
1615 (GNUNET_YES == address_eq (active_address, best_address))))
1617 asi = best_address->solver_information;
1618 GNUNET_assert (NULL != asi);
1620 /* We sticked to the same address, therefore redistribute */
1621 distribute_bandwidth_in_network (s, asi->network);
1626 * Transport session for this address has changed
1628 * NOTE: values in addresses are already updated
1630 * @param solver solver handle
1631 * @param address the address
1632 * @param cur_session the current session
1633 * @param new_session the new session
1636 GAS_proportional_address_session_changed (void *solver,
1637 struct ATS_Address *address,
1638 uint32_t cur_session,
1639 uint32_t new_session)
1641 struct GAS_PROPORTIONAL_Handle *s = solver;
1642 struct ATS_Address *best_address;
1643 struct ATS_Address *active_address;
1644 struct AddressSolverInformation *asi;
1646 if (cur_session != new_session)
1648 LOG (GNUNET_ERROR_TYPE_DEBUG,
1649 "Session changed from %u to %u\n",
1654 if (NULL == address->solver_information)
1660 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1661 return; /* Peer is not requested */
1663 /* This peer is requested, find active and best address */
1664 active_address = get_active_address(s, s->addresses, &address->peer);
1665 best_address = (struct ATS_Address *) update_active_address (s, &address->peer);
1667 if ((NULL != best_address) && ((NULL != active_address) &&
1668 (GNUNET_YES == address_eq (active_address, best_address))))
1670 asi = best_address->solver_information;
1671 GNUNET_assert (NULL != asi);
1673 /* We sticked to the same address, therefore redistribute */
1674 distribute_bandwidth_in_network (s, asi->network);
1680 * Usage for this address has changed
1682 * NOTE: values in addresses are already updated
1684 * @param solver solver handle
1685 * @param address the address
1686 * @param in_use usage state
1689 GAS_proportional_address_inuse_changed (void *solver,
1690 struct ATS_Address *address,
1693 struct GAS_PROPORTIONAL_Handle *s = solver;
1695 struct AddressSolverInformation *asi;
1696 struct ATS_Address *best_address;
1697 struct ATS_Address *active_address;
1699 GNUNET_assert(NULL != s);
1700 GNUNET_assert(NULL != address);
1701 asi = address->solver_information;
1715 LOG(GNUNET_ERROR_TYPE_INFO,
1716 "Usage of peer `%s' address %p changed to %s \n",
1717 GNUNET_i2s (&address->peer), address,
1718 (GNUNET_YES == in_use) ? "YES" : "NO");
1720 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1721 return; /* Peer is not requested */
1723 /* This peer is requested, find active and best address */
1724 active_address = get_active_address(s, s->addresses, &address->peer);
1725 best_address = (struct ATS_Address *) update_active_address (s, &address->peer);
1727 if ((NULL != best_address) && ((NULL != active_address) &&
1728 (GNUNET_YES == address_eq (active_address, best_address))))
1730 asi = best_address->solver_information;
1731 GNUNET_assert (NULL != asi);
1733 /* We sticked to the same address, therefore redistribute */
1734 distribute_bandwidth_in_network (s, asi->network);
1739 * Network scope for this address has changed
1741 * NOTE: values in addresses are already updated
1743 * @param solver solver handle
1744 * @param address the address
1745 * @param current_network the current network
1746 * @param new_network the new network
1749 GAS_proportional_address_change_network (void *solver,
1750 struct ATS_Address *address,
1751 uint32_t current_network,
1752 uint32_t new_network)
1754 struct GAS_PROPORTIONAL_Handle *s = solver;
1755 struct AddressSolverInformation *asi;
1756 int save_active = GNUNET_NO;
1758 if (current_network == new_network)
1764 asi = address->solver_information;
1771 /* Network changed */
1772 LOG(GNUNET_ERROR_TYPE_DEBUG,
1773 "Network type changed, moving %s address from `%s' to `%s'\n",
1774 (GNUNET_YES == address->active) ? "active" : "inactive",
1775 GNUNET_ATS_print_network_type (current_network),
1776 GNUNET_ATS_print_network_type (new_network));
1779 /* Start bulk to prevent disconnect */
1780 GAS_proportional_bulk_start(s);
1782 save_active = address->active;
1784 /* Disable and assign no bandwidth */
1785 address->active = GNUNET_NO;
1786 address->assigned_bw_in = BANDWIDTH_ZERO; /* no bandwidth assigned */
1787 address->assigned_bw_out = BANDWIDTH_ZERO; /* no bandwidth assigned */
1789 /* Remove from old network */
1790 GAS_proportional_address_delete (solver, address, GNUNET_NO);
1792 /* Set new network type */
1793 if (NULL == get_network (solver, new_network))
1795 /* Address changed to invalid network... */
1796 LOG(GNUNET_ERROR_TYPE_ERROR,
1797 _("Invalid network type `%u' `%s': Disconnect!\n"), new_network,
1798 GNUNET_ATS_print_network_type (new_network));
1799 s->bw_changed (s->bw_changed_cls, address);
1803 /* Add to new network and update*/
1804 GAS_proportional_address_add (solver, address, new_network);
1806 GAS_proportional_bulk_stop (s);
1808 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1809 return; /* Peer is not requested */
1811 /* Find new address to suggest */
1812 if (GNUNET_YES == save_active)
1814 /* No address available, therefore disconnect */
1815 if (NULL == update_active_address (s, &address->peer))
1816 s->bw_changed (s->bw_changed_cls, address);
1822 * Add a new single address to a network
1824 * @param solver the solver Handle
1825 * @param address the address to add
1826 * @param network network type of this address
1829 GAS_proportional_address_add (void *solver,
1830 struct ATS_Address *address,
1833 struct GAS_PROPORTIONAL_Handle *s = solver;
1834 struct Network *net = NULL;
1835 struct AddressWrapper *aw = NULL;
1836 struct AddressSolverInformation *asi;
1838 GNUNET_assert(NULL != s);
1839 net = get_network (s, network);
1844 LOG(GNUNET_ERROR_TYPE_ERROR,
1845 "Unknown network %u `%s' for new address %p for peer `%s'\n",
1846 network, GNUNET_ATS_print_network_type(network),
1847 address, GNUNET_i2s(&address->peer));
1852 aw = GNUNET_new (struct AddressWrapper);
1854 GNUNET_CONTAINER_DLL_insert(net->head, net->tail, aw);
1855 addresse_increment (s, net, GNUNET_YES, GNUNET_NO);
1857 asi = GNUNET_new (struct AddressSolverInformation);
1859 asi->calculated_quota_in_NBO = htonl (0);
1860 asi->calculated_quota_out_NBO = htonl (0);
1861 aw->addr->solver_information = asi;
1863 LOG(GNUNET_ERROR_TYPE_INFO,
1864 "Adding new address %p for peer `%s', now total %u and active %u addresses in network `%s'\n",
1865 address, GNUNET_i2s(&address->peer), net->total_addresses, net->active_addresses, net->desc);
1867 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1868 return; /* Peer is not requested */
1870 /* This peer is requested, find best address */
1871 update_active_address (s, &address->peer);
1877 * Function invoked when the plugin is loaded.
1879 * @param cls[in,out] the `struct GNUNET_ATS_PluginEnvironment *` to use;
1880 * modified to return the API functions (ugh).
1881 * @return the `struct GAS_PROPORTIONAL_Handle` to pass as a closure
1884 libgnunet_plugin_ats_proportional_init (void *cls)
1886 struct GNUNET_ATS_PluginEnvironment *env = cls;
1887 struct GAS_PROPORTIONAL_Handle *s;
1888 struct Network * cur;
1889 char * net_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1893 GNUNET_assert (NULL != env);
1894 GNUNET_assert (NULL != env->cfg);
1895 GNUNET_assert (NULL != env->bandwidth_changed_cb);
1896 GNUNET_assert (NULL != env->get_preferences);
1897 GNUNET_assert (NULL != env->get_property);
1899 s = GNUNET_new (struct GAS_PROPORTIONAL_Handle);
1901 env->sf.s_add = &GAS_proportional_address_add;
1902 env->sf.s_address_update_property = &GAS_proportional_address_property_changed;
1903 env->sf.s_address_update_session = &GAS_proportional_address_session_changed;
1904 env->sf.s_address_update_inuse = &GAS_proportional_address_inuse_changed;
1905 env->sf.s_address_update_network = &GAS_proportional_address_change_network;
1906 env->sf.s_get = &GAS_proportional_get_preferred_address;
1907 env->sf.s_get_stop = &GAS_proportional_stop_get_preferred_address;
1908 env->sf.s_pref = &GAS_proportional_address_change_preference;
1909 env->sf.s_feedback = &GAS_proportional_address_preference_feedback;
1910 env->sf.s_del = &GAS_proportional_address_delete;
1911 env->sf.s_bulk_start = &GAS_proportional_bulk_start;
1912 env->sf.s_bulk_stop = &GAS_proportional_bulk_stop;
1914 s->stats = (struct GNUNET_STATISTICS_Handle *) env->stats;
1915 s->bw_changed = env->bandwidth_changed_cb;
1916 s->bw_changed_cls = env->bw_changed_cb_cls;
1917 s->get_preferences = env->get_preferences;
1918 s->get_preferences_cls = env->get_preference_cls;
1919 s->get_properties = env->get_property;
1920 s->get_properties_cls = env->get_property_cls;
1921 s->network_count = env->network_count;
1922 s->network_entries = GNUNET_malloc (env->network_count * sizeof (struct Network));
1925 s->active_addresses = 0;
1926 s->total_addresses = 0;
1927 s->bulk_lock = GNUNET_NO;
1928 s->addresses = env->addresses;
1929 s->requests = GNUNET_CONTAINER_multipeermap_create (10, GNUNET_NO);
1931 s->stability_factor = PROP_STABILITY_FACTOR;
1932 if (GNUNET_SYSERR !=
1933 GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
1934 "PROP_STABILITY_FACTOR", &f_tmp))
1936 if ((f_tmp < 1.0) || (f_tmp > 2.0))
1938 LOG (GNUNET_ERROR_TYPE_ERROR,
1939 _("Invalid %s configuration %f \n"),
1940 "PROP_STABILITY_FACTOR",
1945 s->stability_factor = f_tmp;
1946 LOG (GNUNET_ERROR_TYPE_INFO,
1947 "Using %s of %.3f\n",
1948 "PROP_STABILITY_FACTOR", f_tmp);
1952 s->prop_factor = PROPORTIONALITY_FACTOR;
1953 if (GNUNET_SYSERR !=
1954 GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
1955 "PROP_STABILITY_FACTOR", &f_tmp))
1959 LOG (GNUNET_ERROR_TYPE_ERROR,
1960 _("Invalid %s configuration %f \n"),
1961 "PROP_PROPORTIONALITY_FACTOR", f_tmp);
1965 s->prop_factor = f_tmp;
1966 LOG (GNUNET_ERROR_TYPE_INFO,
1967 "Using %s of %.3f\n",
1968 "PROP_PROPORTIONALITY_FACTOR", f_tmp);
1972 for (c = 0; c < env->network_count; c++)
1974 cur = &s->network_entries[c];
1975 cur->total_addresses = 0;
1976 cur->active_addresses = 0;
1977 cur->type = env->networks[c];
1978 cur->total_quota_in = env->in_quota[c];
1979 cur->total_quota_out = env->out_quota[c];
1980 cur->desc = net_str[c];
1981 GNUNET_asprintf (&cur->stat_total,
1982 "# ATS addresses %s total", cur->desc);
1983 GNUNET_asprintf (&cur->stat_active,
1984 "# ATS active addresses %s total", cur->desc);
1985 LOG (GNUNET_ERROR_TYPE_INFO,
1986 "Added network %u `%s' (%llu/%llu)\n",
1987 c, cur->desc, cur->total_quota_in, cur->total_quota_out);
1993 /* end of plugin_ats_proportional.c */