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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, "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, "Active: `%s' `%s' length %u\n",
595 GNUNET_i2s (&cur_address->addr->peer), cur_address->addr->plugin,
596 cur_address->addr->addr_len);
600 LOG (GNUNET_ERROR_TYPE_INFO,
601 "Total relative preference %.3f for %u addresses in network %s\n",
602 sum_relative_peer_prefences, net->active_addresses, net->desc);
604 for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
606 if (GNUNET_YES == cur_address->addr->active)
608 GNUNET_assert( NULL != (peer_relative_prefs =
609 s->get_preferences (s->get_preferences_cls, &cur_address->addr->peer)));
611 cur_pref = peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
612 total_weight = net->active_addresses +
613 s->prop_factor * sum_relative_peer_prefences;
614 peer_weight = (1.0 + (s->prop_factor * cur_pref));
616 assigned_quota_in = min_bw
617 + ((peer_weight / total_weight) * remaining_quota_in);
618 assigned_quota_out = min_bw
619 + ((peer_weight / total_weight) * remaining_quota_out);
621 LOG (GNUNET_ERROR_TYPE_INFO,
622 "New quota for peer `%s' with weight (cur/total) %.3f/%.3f (in/out): %llu / %llu\n",
623 GNUNET_i2s (&cur_address->addr->peer), peer_weight, total_weight,
624 assigned_quota_in, assigned_quota_out);
628 assigned_quota_in = 0;
629 assigned_quota_out = 0;
632 quota_in_used += assigned_quota_in;
633 quota_out_used += assigned_quota_out;
634 /* Prevent overflow due to rounding errors */
635 if (assigned_quota_in > UINT32_MAX)
636 assigned_quota_in = UINT32_MAX;
637 if (assigned_quota_out > UINT32_MAX)
638 assigned_quota_out = UINT32_MAX;
640 /* Compare to current bandwidth assigned */
641 asi = cur_address->addr->solver_information;
642 asi->calculated_quota_in_NBO = htonl (assigned_quota_in);
643 asi->calculated_quota_out_NBO = htonl (assigned_quota_out);
645 LOG(GNUNET_ERROR_TYPE_DEBUG,
646 "Total bandwidth assigned is (in/out): %llu /%llu\n", quota_in_used,
648 if (quota_out_used > net->total_quota_out + 1) /* +1 is required due to rounding errors */
650 LOG(GNUNET_ERROR_TYPE_ERROR,
651 "Total outbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
652 net->active_addresses, quota_out_used, net->total_quota_out);
654 if (quota_in_used > net->total_quota_in + 1) /* +1 is required due to rounding errors */
656 LOG(GNUNET_ERROR_TYPE_ERROR,
657 "Total inbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
658 net->active_addresses, quota_in_used, net->total_quota_in);
666 struct FindBestAddressCtx
668 struct GAS_PROPORTIONAL_Handle *s;
669 struct ATS_Address *best;
677 find_property_index (uint32_t type)
679 int existing_types[] = GNUNET_ATS_QualityProperties;
682 for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
683 if (existing_types[c] == type)
685 return GNUNET_SYSERR;
690 * Find a "good" address to use for a peer by iterating over the addresses for this peer.
691 * If we already have an existing address, we stick to it.
692 * Otherwise, we pick by lowest distance and then by lowest latency.
694 * @param cls the `struct FindBestAddressCtx *' where we store the result
696 * @param value another `struct ATS_Address*` to consider using
697 * @return #GNUNET_OK (continue to iterate)
700 find_best_address_it (void *cls,
701 const struct GNUNET_PeerIdentity *key,
704 struct FindBestAddressCtx *ctx = cls;
705 struct ATS_Address *current = value;
706 struct ATS_Address *current_best = current;
707 struct GNUNET_TIME_Absolute now;
708 struct AddressSolverInformation *asi;
709 struct GNUNET_TIME_Relative active_time;
710 struct GNUNET_TIME_Relative min_active_time;
711 const double *norm_prop_cur;
712 const double *norm_prop_best;
714 double best_distance;
720 asi = current->solver_information;
721 now = GNUNET_TIME_absolute_get ();
723 if ((current->active == GNUNET_NO)
724 && (current->blocked_until.abs_value_us
725 == GNUNET_TIME_absolute_max (now, current->blocked_until).abs_value_us))
727 /* This address is blocked for suggestion */
728 LOG (GNUNET_ERROR_TYPE_DEBUG,
729 "Address %p blocked for suggestion for %s \n",
731 GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_difference (now, current->blocked_until),
741 if (GNUNET_NO == is_bandwidth_available_in_network (asi->network))
743 return GNUNET_OK; /* There's no bandwidth available in this network */
746 if (NULL != ctx->best)
748 /* Compare current addresses with denominated 'best' address */
749 current_best = ctx->best;
753 /* We do not have a 'best' address so take this address */
754 LOG (GNUNET_ERROR_TYPE_DEBUG,
755 "Setting initial address %p\n",
757 current_best = current;
761 if (GNUNET_YES == current->active)
763 GNUNET_assert (asi->activated.abs_value_us != GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us);
764 active_time = GNUNET_TIME_absolute_get_duration (asi->activated);
765 min_active_time.rel_value_us = ((double) GNUNET_TIME_UNIT_SECONDS.rel_value_us) *
766 PROP_STABILITY_FACTOR;
767 if (active_time.rel_value_us <= min_active_time.rel_value_us)
769 /* Keep active address for stability reasons */
775 /* Now compare ATS information */
776 norm_prop_cur = ctx->s->get_properties (ctx->s->get_properties_cls,
777 (const struct ATS_Address *) current);
778 index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
779 cur_distance = norm_prop_cur[index];
780 index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
781 cur_delay = norm_prop_cur[index];
783 norm_prop_best = ctx->s->get_properties (ctx->s->get_properties_cls,
784 (const struct ATS_Address *) ctx->best);
785 index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
786 best_distance = norm_prop_best[index];
787 index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
788 best_delay = norm_prop_best[index];
790 /* user shorter distance */
791 if (cur_distance < best_distance)
794 if (GNUNET_NO == ctx->best->active)
796 current_best = current; /* Use current */
798 else if ((best_distance / cur_distance) > ctx->s->stability_factor)
800 /* Best and active address performs worse */
801 current_best = current;
806 /* Use current best */
807 current_best = ctx->best;
810 /* User connection with less delay */
811 if (cur_delay < best_delay)
814 if (GNUNET_NO == ctx->best->active)
816 current_best = current; /* Use current */
818 else if ((best_delay / cur_delay) > ctx->s->stability_factor)
820 /* Best and active address performs worse */
821 current_best = current;
826 /* Use current best */
827 current_best = ctx->best;
831 ctx->best = current_best;
837 * Find the currently best address for a peer from the set of addresses available
838 * or return NULL of no address is available
840 * @param s the proportional handle
841 * @param addresses the address hashmap
842 * @param id the peer id
843 * @return the address or NULL
846 get_best_address (struct GAS_PROPORTIONAL_Handle *s,
847 struct GNUNET_CONTAINER_MultiPeerMap *addresses,
848 const struct GNUNET_PeerIdentity *id)
850 struct FindBestAddressCtx fba_ctx;
854 GNUNET_CONTAINER_multipeermap_get_multiple (addresses, id,
855 &find_best_address_it, &fba_ctx);
862 * Hashmap Iterator to find current active address for peer
864 * @param cls last active address
865 * @param key peer's key
866 * @param value address to check
867 * @return #GNUNET_NO on double active address else #GNUNET_YES;
870 get_active_address_it (void *cls,
871 const struct GNUNET_PeerIdentity *key,
874 struct ATS_Address **dest = cls;
875 struct ATS_Address *aa = (struct ATS_Address *) value;
877 if (GNUNET_YES == aa->active)
882 /* should never happen */
883 LOG (GNUNET_ERROR_TYPE_ERROR,
884 "Multiple active addresses for peer `%s'\n",
885 GNUNET_i2s (&aa->peer));
896 * Find current active address for peer
898 * @param solver the solver handle
899 * @param addresses the address set
900 * @param peer the peer
901 * @return active address or NULL
903 static struct ATS_Address *
904 get_active_address (void *solver,
905 const struct GNUNET_CONTAINER_MultiPeerMap * addresses,
906 const struct GNUNET_PeerIdentity *peer)
908 static struct ATS_Address * dest = NULL;
911 GNUNET_CONTAINER_multipeermap_get_multiple (addresses, peer,
912 &get_active_address_it, &dest);
918 * Lookup network struct by type
920 * @param s the solver handle
921 * @param type the network type
922 * @return the network struct
924 static struct Network *
925 get_network (struct GAS_PROPORTIONAL_Handle *s, uint32_t type)
928 for (c = 0; c < s->network_count; c++)
930 if (s->network_entries[c].type == type)
931 return &s->network_entries[c];
938 * Increase address count in network
940 * @param s the solver handle
941 * @param net the network type
942 * @param total increase total addresses
943 * @param active increase active addresses
946 address_increment (struct GAS_PROPORTIONAL_Handle *s,
951 if (GNUNET_YES == total)
953 s->total_addresses++;
954 net->total_addresses++;
955 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", 1, GNUNET_NO);
956 GNUNET_STATISTICS_update (s->stats, net->stat_total, 1, GNUNET_NO);
958 if (GNUNET_YES == active)
960 net->active_addresses++;
961 s->active_addresses++;
962 GNUNET_STATISTICS_update (s->stats, "# ATS active addresses total", 1,
964 GNUNET_STATISTICS_update (s->stats, net->stat_active, 1, GNUNET_NO);
971 * Decrease address count in network
973 * @param s the solver handle
974 * @param net the network type
975 * @param total decrease total addresses
976 * @param active decrease active addresses
979 addresse_decrement (struct GAS_PROPORTIONAL_Handle *s,
986 if (GNUNET_YES == total)
988 if (s->total_addresses < 1)
995 s->total_addresses--;
996 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", -1,
999 if (net->total_addresses < 1)
1002 res = GNUNET_SYSERR;
1006 net->total_addresses--;
1007 GNUNET_STATISTICS_update (s->stats, net->stat_total, -1, GNUNET_NO);
1011 if (GNUNET_YES == active)
1013 if (net->active_addresses < 1)
1016 res = GNUNET_SYSERR;
1020 net->active_addresses--;
1021 GNUNET_STATISTICS_update (s->stats, net->stat_active, -1, GNUNET_NO);
1023 if (s->active_addresses < 1)
1026 res = GNUNET_SYSERR;
1030 s->active_addresses--;
1031 GNUNET_STATISTICS_update (s->stats, "# ATS addresses total", -1,
1043 address_eq (struct ATS_Address *a, struct ATS_Address *b)
1045 GNUNET_assert (NULL != a);
1046 GNUNET_assert (NULL != b);
1047 if (0 != strcmp(a->plugin, b->plugin))
1049 if (a->addr_len != b->addr_len)
1051 if (0 != memcmp (a->addr, b->addr, b->addr_len))
1053 if (a->session_id != b->session_id)
1063 propagate_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
1064 struct Network *net)
1066 struct AddressWrapper *cur;
1067 struct AddressSolverInformation *asi;
1068 for (cur = net->head; NULL != cur; cur = cur->next)
1070 asi = cur->addr->solver_information;
1071 if ( (cur->addr->assigned_bw_in.value__ != asi->calculated_quota_in_NBO) ||
1072 (cur->addr->assigned_bw_out.value__ != asi->calculated_quota_out_NBO) )
1074 cur->addr->assigned_bw_in.value__ = asi->calculated_quota_in_NBO;
1075 cur->addr->assigned_bw_out.value__ = asi->calculated_quota_out_NBO;
1077 /* Reset for next iteration */
1078 asi->calculated_quota_in_NBO = htonl (0);
1079 asi->calculated_quota_out_NBO = htonl (0);
1081 LOG (GNUNET_ERROR_TYPE_DEBUG,
1082 "Bandwidth for %s address %p for peer `%s' changed to %u/%u\n",
1083 (GNUNET_NO == cur->addr->active) ? "inactive" : "active",
1085 GNUNET_i2s (&cur->addr->peer),
1086 ntohl (cur->addr->assigned_bw_in.value__),
1087 ntohl (cur->addr->assigned_bw_out.value__ ));
1089 /* Notify on change */
1090 if ((GNUNET_YES == cur->addr->active))
1092 s->bw_changed (s->bw_changed_cls, cur->addr);
1100 * Distribibute bandwidth
1102 * @param s the solver handle
1103 * @param n the network, can be NULL for all network
1104 * @param address_except do not notify for this address
1107 distribute_bandwidth_in_network (struct GAS_PROPORTIONAL_Handle *s,
1110 if (GNUNET_YES == s->bulk_lock)
1118 LOG (GNUNET_ERROR_TYPE_INFO,
1119 "Redistributing bandwidth in network %s with %u active and %u total addresses\n",
1120 GNUNET_ATS_print_network_type(n->type),
1121 n->active_addresses, n->total_addresses);
1123 if (NULL != s->env->info_cb)
1124 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_START,
1125 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1128 distribute_bandwidth(s, n);
1130 if (NULL != s->env->info_cb)
1131 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_STOP,
1132 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1133 if (NULL != s->env->info_cb)
1134 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
1135 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1137 /* Do propagation */
1138 propagate_bandwidth (s, n);
1140 if (NULL != s->env->info_cb)
1141 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
1142 GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
1147 if (NULL != s->env->info_cb)
1148 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_START,
1149 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1150 for (i = 0; i < s->network_count; i++)
1153 distribute_bandwidth(s, &s->network_entries[i]);
1156 if (NULL != s->env->info_cb)
1157 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_STOP,
1158 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1159 if (NULL != s->env->info_cb)
1160 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
1161 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1162 for (i = 0; i < s->network_count; i++)
1164 /* Do propagation */
1165 propagate_bandwidth(s, &s->network_entries[i]);
1167 if (NULL != s->env->info_cb)
1168 s->env->info_cb(s->env->info_cb_cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
1169 GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
1177 static const struct ATS_Address *
1178 update_active_address (struct GAS_PROPORTIONAL_Handle *s,
1179 const struct GNUNET_PeerIdentity *peer)
1181 struct ATS_Address *best_address;
1182 struct ATS_Address *current_address;
1183 struct AddressSolverInformation *asi;
1184 struct Network *net;
1186 LOG (GNUNET_ERROR_TYPE_INFO,
1187 "Updating active address for peer `%s'\n",
1190 /* Find active address */
1191 current_address = get_active_address (s, s->addresses, peer);
1192 /* Find best address */
1193 best_address = get_best_address (s,s->addresses, peer);
1195 if (NULL != current_address)
1197 if ((NULL == best_address) || ((NULL != best_address) &&
1198 (GNUNET_NO == address_eq (current_address, best_address))))
1200 /* We switch to a new address, mark old address as inactive */
1201 LOG (GNUNET_ERROR_TYPE_INFO,
1202 "Disabling previous %s address %p for peer `%s'\n",
1203 (GNUNET_NO == current_address->active) ? "inactive" : "active",
1207 asi = current_address->solver_information;
1208 GNUNET_assert (NULL != asi);
1211 asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
1212 current_address->active = GNUNET_NO; /* No active any longer */
1213 current_address->assigned_bw_in = BANDWIDTH_ZERO; /* no bandwidth assigned */
1214 current_address->assigned_bw_out = BANDWIDTH_ZERO; /* no bandwidth assigned */
1216 if (GNUNET_SYSERR == addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
1219 /* Update network of previous address */
1220 distribute_bandwidth_in_network (s, net);
1222 if (NULL == best_address)
1224 /* We previously had an active address, but now we cannot suggest one
1225 * Therefore we have to disconnect the peer */
1227 LOG (GNUNET_ERROR_TYPE_INFO,
1228 "Disconnecting peer `%s' with previous %s address %p\n",
1230 (GNUNET_NO == current_address->active) ? "inactive" : "active",
1232 s->bw_changed (s->bw_changed_cls, current_address);
1236 if (NULL == best_address)
1238 LOG (GNUNET_ERROR_TYPE_INFO, "Cannot suggest address for peer `%s'\n",
1243 LOG (GNUNET_ERROR_TYPE_INFO, "Suggesting %s address %p for peer `%s'\n",
1244 (GNUNET_NO == best_address->active) ? "inactive" : "active", best_address,
1247 if ((NULL != current_address) &&
1248 (GNUNET_YES == address_eq (best_address, current_address)))
1250 if (current_address->active == GNUNET_NO)
1251 GNUNET_break (0); /* Should never happen */
1252 return best_address; /* Same same */
1255 asi = best_address->solver_information;
1256 GNUNET_assert (NULL != asi);
1259 /* Mark address as active */
1260 asi->activated = GNUNET_TIME_absolute_get();
1261 best_address->active = GNUNET_YES;
1262 address_increment (s, net, GNUNET_NO, GNUNET_YES);
1264 /* Distribute bandwidth */
1265 distribute_bandwidth_in_network (s, net);
1266 return best_address;
1271 * Changes the preferences for a peer in the problem
1273 * @param solver the solver handle
1274 * @param peer the peer to change the preference for
1275 * @param kind the kind to change the preference
1276 * @param pref_rel the normalized preference value for this kind over all clients
1279 GAS_proportional_address_change_preference (void *solver,
1280 const struct GNUNET_PeerIdentity *peer,
1281 enum GNUNET_ATS_PreferenceKind kind,
1284 struct GAS_PROPORTIONAL_Handle *s = solver;
1285 struct ATS_Address *best_address;
1286 struct ATS_Address *active_address;
1287 struct AddressSolverInformation *asi;
1289 GNUNET_assert(NULL != s);
1290 GNUNET_assert(NULL != peer);
1292 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1293 return; /* Peer is not requested */
1295 /* This peer is requested, find best address */
1296 active_address = get_active_address(s, s->addresses, peer);
1297 best_address = (struct ATS_Address *) update_active_address (s, peer);
1299 if ((NULL != best_address) && ((NULL != active_address) &&
1300 (GNUNET_YES == address_eq (active_address, best_address))))
1302 asi = best_address->solver_information;
1303 GNUNET_assert (NULL != asi);
1305 /* We sticked to the same address, therefore redistribute */
1306 distribute_bandwidth_in_network (s, asi->network);
1312 * Get application feedback for a peer
1314 * @param solver the solver handle
1315 * @param application the application
1316 * @param peer the peer to change the preference for
1317 * @param scope the time interval for this feedback: [now - scope .. now]
1318 * @param kind the kind to change the preference
1319 * @param score the score
1322 GAS_proportional_address_preference_feedback (void *solver,
1324 const struct GNUNET_PeerIdentity *peer,
1325 const struct GNUNET_TIME_Relative scope,
1326 enum GNUNET_ATS_PreferenceKind kind,
1329 struct GAS_PROPORTIONAL_Handle *s = solver;
1331 GNUNET_assert(NULL != peer);
1332 GNUNET_assert(NULL != s);
1337 * Get the preferred address for a specific peer
1339 * @param solver the solver handle
1340 * @param peer the identity of the peer
1343 static const struct ATS_Address *
1344 GAS_proportional_get_preferred_address (void *solver,
1345 const struct GNUNET_PeerIdentity *peer)
1347 struct GAS_PROPORTIONAL_Handle *s = solver;
1348 const struct ATS_Address *best_address;
1351 GNUNET_assert(s != NULL);
1352 GNUNET_assert(peer != NULL);
1354 /* Add to list of pending requests */
1355 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1358 GNUNET_OK == GNUNET_CONTAINER_multipeermap_put (s->requests, peer, NULL,
1359 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
1360 LOG (GNUNET_ERROR_TYPE_INFO, "Start suggesting addresses for peer `%s'\n",
1364 best_address = update_active_address (s, peer);
1365 if (s->bulk_lock > 0)
1366 return NULL; /* Do not suggest since bulk lock is pending */
1368 return best_address;
1373 * Stop notifying about address and bandwidth changes for this peer
1375 * @param solver the solver handle
1376 * @param peer the peer
1379 GAS_proportional_stop_get_preferred_address (void *solver,
1380 const struct GNUNET_PeerIdentity *peer)
1382 struct GAS_PROPORTIONAL_Handle *s = solver;
1383 struct ATS_Address *cur;
1384 struct AddressSolverInformation *asi;
1385 struct Network *cur_net;
1387 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
1388 GNUNET_assert (GNUNET_OK == GNUNET_CONTAINER_multipeermap_remove (s->requests,
1391 cur = get_active_address (s, s->addresses, peer);
1394 LOG(GNUNET_ERROR_TYPE_INFO,
1395 "Disabling %s address %p for peer `%s'\n",
1396 (GNUNET_NO == cur->active) ? "inactive" : "active", cur,
1397 GNUNET_i2s (&cur->peer));
1399 /* Disabling current address */
1400 asi = cur->solver_information;
1401 cur_net = asi->network ;
1402 asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
1403 cur->active = GNUNET_NO; /* No active any longer */
1404 cur->assigned_bw_in = BANDWIDTH_ZERO; /* no bandwidth assigned */
1405 cur->assigned_bw_out = BANDWIDTH_ZERO; /* no bandwidth assigned */
1407 if (GNUNET_SYSERR == addresse_decrement (s, cur_net, GNUNET_NO, GNUNET_YES))
1410 distribute_bandwidth_in_network (s, cur_net );
1417 * Remove an address from the solver
1419 * @param solver the solver handle
1420 * @param address the address to remove
1421 * @param session_only delete only session not whole address
1424 GAS_proportional_address_delete (void *solver,
1425 struct ATS_Address *address,
1428 struct GAS_PROPORTIONAL_Handle *s = solver;
1429 struct Network *net;
1430 struct AddressWrapper *aw;
1431 struct AddressSolverInformation *asi;
1433 /* Remove an adress completely, we have to:
1434 * - Remove from specific network
1435 * - Decrease number of total addresses
1437 * - decrease number of active addreses
1440 asi = address->solver_information;
1449 if (GNUNET_NO == session_only)
1451 LOG(GNUNET_ERROR_TYPE_INFO,
1452 "Deleting %s address %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
1453 (GNUNET_NO == address->active) ? "inactive" : "active", address,
1454 GNUNET_i2s (&address->peer), net->desc, net->total_addresses,
1455 net->active_addresses);
1457 /* Remove address */
1458 addresse_decrement (s, net, GNUNET_YES, GNUNET_NO);
1459 for (aw = net->head; NULL != aw; aw = aw->next)
1461 if (aw->addr == address)
1469 GNUNET_CONTAINER_DLL_remove(net->head, net->tail, aw);
1474 /* Remove session only: remove if active and update */
1475 LOG(GNUNET_ERROR_TYPE_INFO,
1476 "Deleting %s session %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
1477 (GNUNET_NO == address->active) ? "inactive" : "active", address,
1478 GNUNET_i2s (&address->peer), net->desc, net->total_addresses,
1479 net->active_addresses);
1482 if (GNUNET_YES == address->active)
1484 /* Address was active, remove from network and update quotas*/
1485 address->active = GNUNET_NO;
1486 address->assigned_bw_in = BANDWIDTH_ZERO;
1487 address->assigned_bw_out = BANDWIDTH_ZERO;
1488 asi->calculated_quota_in_NBO = htonl (0);
1489 asi->calculated_quota_out_NBO = htonl (0);
1491 if (GNUNET_SYSERR == addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
1493 distribute_bandwidth_in_network (s, net);
1495 if (NULL == update_active_address (s, &address->peer))
1497 /* No alternative address found, disconnect peer */
1498 LOG (GNUNET_ERROR_TYPE_INFO,
1499 "Disconnecting peer `%s' after deleting previous %s address %p\n",
1500 GNUNET_i2s (&address->peer),
1501 (GNUNET_NO == address->active) ? "inactive" : "active",
1503 s->bw_changed (s->bw_changed_cls, address);
1506 if (GNUNET_NO == session_only)
1508 GNUNET_free_non_null (address->solver_information);
1509 address->solver_information = NULL;
1512 LOG(GNUNET_ERROR_TYPE_INFO,
1513 "After deleting address now total %u and active %u addresses in network `%s'\n",
1514 net->total_addresses, net->active_addresses, net->desc);
1520 * Start a bulk operation
1522 * @param solver the solver
1525 GAS_proportional_bulk_start (void *solver)
1527 struct GAS_PROPORTIONAL_Handle *s = solver;
1529 LOG (GNUNET_ERROR_TYPE_DEBUG,
1530 "Locking solver for bulk operation ...\n");
1531 GNUNET_assert(NULL != solver);
1537 * Bulk operation done
1540 GAS_proportional_bulk_stop (void *solver)
1542 struct GAS_PROPORTIONAL_Handle *s = solver;
1544 LOG (GNUNET_ERROR_TYPE_DEBUG,
1545 "Unlocking solver from bulk operation ...\n");
1546 GNUNET_assert(NULL != solver);
1548 if (s->bulk_lock < 1)
1554 if ((0 == s->bulk_lock) && (0 < s->bulk_requests))
1556 LOG(GNUNET_ERROR_TYPE_INFO, "No lock pending, recalculating\n");
1557 distribute_bandwidth_in_network (s, NULL);
1558 s->bulk_requests = 0;
1564 * Add a new single address to a network
1566 * @param solver the solver Handle
1567 * @param address the address to add
1568 * @param network network type of this address
1571 GAS_proportional_address_add (void *solver,
1572 struct ATS_Address *address,
1577 * Transport properties for this address have changed
1579 * @param solver solver handle
1580 * @param address the address
1581 * @param type the ATSI type in HBO
1582 * @param abs_value the absolute value of the property
1583 * @param rel_value the normalized value
1586 GAS_proportional_address_property_changed (void *solver,
1587 struct ATS_Address *address,
1592 struct GAS_PROPORTIONAL_Handle *s = solver;
1594 struct AddressSolverInformation *asi;
1595 struct ATS_Address *best_address;
1596 struct ATS_Address *active_address;
1598 GNUNET_assert(NULL != s);
1599 GNUNET_assert(NULL != address);
1600 asi = address->solver_information;
1614 LOG(GNUNET_ERROR_TYPE_INFO,
1615 "Property `%s' for peer `%s' address %p changed to %.2f \n",
1616 GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
1617 address, rel_value);
1619 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1620 return; /* Peer is not requested */
1622 /* This peer is requested, find active and best address */
1623 active_address = get_active_address(s, s->addresses, &address->peer);
1624 best_address = (struct ATS_Address *) update_active_address (s, &address->peer);
1626 if ((NULL != best_address) && ((NULL != active_address) &&
1627 (GNUNET_YES == address_eq (active_address, best_address))))
1629 asi = best_address->solver_information;
1630 GNUNET_assert (NULL != asi);
1632 /* We sticked to the same address, therefore redistribute */
1633 distribute_bandwidth_in_network (s, asi->network);
1638 * Transport session for this address has changed
1640 * NOTE: values in addresses are already updated
1642 * @param solver solver handle
1643 * @param address the address
1644 * @param cur_session the current session
1645 * @param new_session the new session
1648 GAS_proportional_address_session_changed (void *solver,
1649 struct ATS_Address *address,
1650 uint32_t cur_session,
1651 uint32_t new_session)
1653 struct GAS_PROPORTIONAL_Handle *s = solver;
1654 struct ATS_Address *best_address;
1655 struct ATS_Address *active_address;
1656 struct AddressSolverInformation *asi;
1658 if (cur_session != new_session)
1660 LOG (GNUNET_ERROR_TYPE_DEBUG,
1661 "Session changed from %u to %u\n",
1666 if (NULL == address->solver_information)
1672 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1673 return; /* Peer is not requested */
1675 /* This peer is requested, find active and best address */
1676 active_address = get_active_address(s, s->addresses, &address->peer);
1677 best_address = (struct ATS_Address *) update_active_address (s, &address->peer);
1679 if ((NULL != best_address) && ((NULL != active_address) &&
1680 (GNUNET_YES == address_eq (active_address, best_address))))
1682 asi = best_address->solver_information;
1683 GNUNET_assert (NULL != asi);
1685 /* We sticked to the same address, therefore redistribute */
1686 distribute_bandwidth_in_network (s, asi->network);
1692 * Usage for this address has changed
1694 * NOTE: values in addresses are already updated
1696 * @param solver solver handle
1697 * @param address the address
1698 * @param in_use usage state
1701 GAS_proportional_address_inuse_changed (void *solver,
1702 struct ATS_Address *address,
1705 struct GAS_PROPORTIONAL_Handle *s = solver;
1707 struct AddressSolverInformation *asi;
1708 struct ATS_Address *best_address;
1709 struct ATS_Address *active_address;
1711 GNUNET_assert(NULL != s);
1712 GNUNET_assert(NULL != address);
1713 asi = address->solver_information;
1727 LOG(GNUNET_ERROR_TYPE_INFO,
1728 "Usage of peer `%s' address %p changed to %s \n",
1729 GNUNET_i2s (&address->peer), address,
1730 (GNUNET_YES == in_use) ? "YES" : "NO");
1732 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1733 return; /* Peer is not requested */
1735 /* This peer is requested, find active and best address */
1736 active_address = get_active_address(s, s->addresses, &address->peer);
1737 best_address = (struct ATS_Address *) update_active_address (s, &address->peer);
1739 if ((NULL != best_address) && ((NULL != active_address) &&
1740 (GNUNET_YES == address_eq (active_address, best_address))))
1742 asi = best_address->solver_information;
1743 GNUNET_assert (NULL != asi);
1745 /* We sticked to the same address, therefore redistribute */
1746 distribute_bandwidth_in_network (s, asi->network);
1751 * Network scope for this address has changed
1753 * NOTE: values in addresses are already updated
1755 * @param solver solver handle
1756 * @param address the address
1757 * @param current_network the current network
1758 * @param new_network the new network
1761 GAS_proportional_address_change_network (void *solver,
1762 struct ATS_Address *address,
1763 uint32_t current_network,
1764 uint32_t new_network)
1766 struct GAS_PROPORTIONAL_Handle *s = solver;
1767 struct AddressSolverInformation *asi;
1768 int save_active = GNUNET_NO;
1770 if (current_network == new_network)
1776 asi = address->solver_information;
1783 /* Network changed */
1784 LOG(GNUNET_ERROR_TYPE_DEBUG,
1785 "Network type changed, moving %s address from `%s' to `%s'\n",
1786 (GNUNET_YES == address->active) ? "active" : "inactive",
1787 GNUNET_ATS_print_network_type (current_network),
1788 GNUNET_ATS_print_network_type (new_network));
1791 /* Start bulk to prevent disconnect */
1792 GAS_proportional_bulk_start(s);
1794 save_active = address->active;
1796 /* Disable and assign no bandwidth */
1797 address->active = GNUNET_NO;
1798 address->assigned_bw_in = BANDWIDTH_ZERO; /* no bandwidth assigned */
1799 address->assigned_bw_out = BANDWIDTH_ZERO; /* no bandwidth assigned */
1801 /* Remove from old network */
1802 GAS_proportional_address_delete (solver, address, GNUNET_NO);
1804 /* Set new network type */
1805 if (NULL == get_network (solver, new_network))
1807 /* Address changed to invalid network... */
1808 LOG(GNUNET_ERROR_TYPE_ERROR,
1809 _("Invalid network type `%u' `%s': Disconnect!\n"), new_network,
1810 GNUNET_ATS_print_network_type (new_network));
1811 s->bw_changed (s->bw_changed_cls, address);
1815 /* Add to new network and update*/
1816 GAS_proportional_address_add (solver, address, new_network);
1818 GAS_proportional_bulk_stop (s);
1820 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1821 return; /* Peer is not requested */
1823 /* Find new address to suggest */
1824 if (GNUNET_YES == save_active)
1826 /* No address available, therefore disconnect */
1827 if (NULL == update_active_address (s, &address->peer))
1828 s->bw_changed (s->bw_changed_cls, address);
1834 * Add a new single address to a network
1836 * @param solver the solver Handle
1837 * @param address the address to add
1838 * @param network network type of this address
1841 GAS_proportional_address_add (void *solver,
1842 struct ATS_Address *address,
1845 struct GAS_PROPORTIONAL_Handle *s = solver;
1846 struct Network *net = NULL;
1847 struct AddressWrapper *aw = NULL;
1848 struct AddressSolverInformation *asi;
1850 GNUNET_assert(NULL != s);
1851 net = get_network (s, network);
1856 LOG(GNUNET_ERROR_TYPE_ERROR,
1857 "Unknown network %u `%s' for new address %p for peer `%s'\n",
1858 network, GNUNET_ATS_print_network_type(network),
1859 address, GNUNET_i2s(&address->peer));
1864 aw = GNUNET_new (struct AddressWrapper);
1866 GNUNET_CONTAINER_DLL_insert(net->head, net->tail, aw);
1867 address_increment (s, net, GNUNET_YES, GNUNET_NO);
1869 asi = GNUNET_new (struct AddressSolverInformation);
1871 asi->calculated_quota_in_NBO = htonl (0);
1872 asi->calculated_quota_out_NBO = htonl (0);
1873 aw->addr->solver_information = asi;
1875 LOG(GNUNET_ERROR_TYPE_INFO,
1876 "Adding new address %p for peer `%s', now total %u and active %u addresses in network `%s'\n",
1877 address, GNUNET_i2s(&address->peer), net->total_addresses, net->active_addresses, net->desc);
1879 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
1880 return; /* Peer is not requested */
1882 /* This peer is requested, find best address */
1883 update_active_address (s, &address->peer);
1889 * Function invoked when the plugin is loaded.
1891 * @param cls[in,out] the `struct GNUNET_ATS_PluginEnvironment *` to use;
1892 * modified to return the API functions (ugh).
1893 * @return the `struct GAS_PROPORTIONAL_Handle` to pass as a closure
1896 libgnunet_plugin_ats_proportional_init (void *cls)
1898 struct GNUNET_ATS_PluginEnvironment *env = cls;
1899 struct GAS_PROPORTIONAL_Handle *s;
1900 struct Network * cur;
1901 char * net_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1905 GNUNET_assert (NULL != env);
1906 GNUNET_assert (NULL != env->cfg);
1907 GNUNET_assert (NULL != env->bandwidth_changed_cb);
1908 GNUNET_assert (NULL != env->get_preferences);
1909 GNUNET_assert (NULL != env->get_property);
1911 s = GNUNET_new (struct GAS_PROPORTIONAL_Handle);
1913 env->sf.s_add = &GAS_proportional_address_add;
1914 env->sf.s_address_update_property = &GAS_proportional_address_property_changed;
1915 env->sf.s_address_update_session = &GAS_proportional_address_session_changed;
1916 env->sf.s_address_update_inuse = &GAS_proportional_address_inuse_changed;
1917 env->sf.s_address_update_network = &GAS_proportional_address_change_network;
1918 env->sf.s_get = &GAS_proportional_get_preferred_address;
1919 env->sf.s_get_stop = &GAS_proportional_stop_get_preferred_address;
1920 env->sf.s_pref = &GAS_proportional_address_change_preference;
1921 env->sf.s_feedback = &GAS_proportional_address_preference_feedback;
1922 env->sf.s_del = &GAS_proportional_address_delete;
1923 env->sf.s_bulk_start = &GAS_proportional_bulk_start;
1924 env->sf.s_bulk_stop = &GAS_proportional_bulk_stop;
1926 s->stats = (struct GNUNET_STATISTICS_Handle *) env->stats;
1927 s->bw_changed = env->bandwidth_changed_cb;
1928 s->bw_changed_cls = env->bw_changed_cb_cls;
1929 s->get_preferences = env->get_preferences;
1930 s->get_preferences_cls = env->get_preference_cls;
1931 s->get_properties = env->get_property;
1932 s->get_properties_cls = env->get_property_cls;
1933 s->network_count = env->network_count;
1934 s->network_entries = GNUNET_malloc (env->network_count * sizeof (struct Network));
1937 s->active_addresses = 0;
1938 s->total_addresses = 0;
1939 s->bulk_lock = GNUNET_NO;
1940 s->addresses = env->addresses;
1941 s->requests = GNUNET_CONTAINER_multipeermap_create (10, GNUNET_NO);
1943 s->stability_factor = PROP_STABILITY_FACTOR;
1944 if (GNUNET_SYSERR !=
1945 GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
1946 "PROP_STABILITY_FACTOR", &f_tmp))
1948 if ((f_tmp < 1.0) || (f_tmp > 2.0))
1950 LOG (GNUNET_ERROR_TYPE_ERROR,
1951 _("Invalid %s configuration %f \n"),
1952 "PROP_STABILITY_FACTOR",
1957 s->stability_factor = f_tmp;
1958 LOG (GNUNET_ERROR_TYPE_INFO,
1959 "Using %s of %.3f\n",
1960 "PROP_STABILITY_FACTOR", f_tmp);
1964 s->prop_factor = PROPORTIONALITY_FACTOR;
1965 if (GNUNET_SYSERR !=
1966 GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
1967 "PROP_STABILITY_FACTOR", &f_tmp))
1971 LOG (GNUNET_ERROR_TYPE_ERROR,
1972 _("Invalid %s configuration %f \n"),
1973 "PROP_PROPORTIONALITY_FACTOR", f_tmp);
1977 s->prop_factor = f_tmp;
1978 LOG (GNUNET_ERROR_TYPE_INFO,
1979 "Using %s of %.3f\n",
1980 "PROP_PROPORTIONALITY_FACTOR", f_tmp);
1984 for (c = 0; c < env->network_count; c++)
1986 cur = &s->network_entries[c];
1987 cur->total_addresses = 0;
1988 cur->active_addresses = 0;
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 = net_str[c];
1993 GNUNET_asprintf (&cur->stat_total,
1994 "# ATS addresses %s total", cur->desc);
1995 GNUNET_asprintf (&cur->stat_active,
1996 "# ATS active addresses %s total", cur->desc);
1997 LOG (GNUNET_ERROR_TYPE_INFO,
1998 "Added network %u `%s' (%llu/%llu)\n",
1999 c, cur->desc, cur->total_quota_in, cur->total_quota_out);
2005 /* end of plugin_ats_proportional.c */