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- /*
- This file is part of GNUnet.
- Copyright (C) 2011-2014 Christian Grothoff (and other contributing authors)
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
- /**
- * @file ats/plugin_ats_proportional.c
- * @brief ATS proportional solver
- * @author Matthias Wachs
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet_statistics_service.h"
- #include "gnunet_ats_plugin.h"
- #include "gnunet_ats_service.h"
- #include "gnunet-service-ats_addresses.h"
- #define PROP_STABILITY_FACTOR 1.25
- #define LOG(kind,...) GNUNET_log_from (kind, "ats-proportional",__VA_ARGS__)
- /**
- *
- * NOTE: Do not change this documentation. This documentation is based
- * on gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
- * use build_txt.sh to generate plaintext output
- *
- * ATS addresses : proportional solver
- *
- * The proportional solver ("proportional") distributes the available
- * bandwidth fair over all the addresses influenced by the
- * preference values. For each available network type an in- and
- * outbound quota is configured and the bandwidth available in
- * these networks is distributed over the addresses. The solver
- * first assigns every addresses the minimum amount of bandwidth
- * #GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT and then distributes the
- * remaining bandwidth available according to the preference
- * values. For each peer only a single address gets bandwidth
- * assigned and only one address marked as active. The most
- * important functionality for the solver is implemented in: *
- * find_address_it is an hashmap iterator returning the prefered
- * address for an peer * update_quota_per_network distributes
- * available bandwidth for a network over active addresses
- *
- * Changes to addresses automatically have an impact on the the
- * bandwidth assigned to other addresses in the same network since
- * the solver distributes the remaining bandwidth over the
- * addresses in the network. When changes to the addresses occur,
- * the solver first performs the changes, like adding or deleting
- * addresses, and then updates bandwidth assignment for the
- * affected network. Bandwidth assignment is only recalculated on
- * demand when an address is requested by a client for a peer or
- * when the addresses available have changed or an address changed
- * the network it is located in. When the bandwidth assignment has
- * changed the callback is called with the new bandwidth
- * assignments. The bandwidth distribution for a network is
- * recalculated due to: * address suggestion requests * address
- * deletions * address switching networks during address update *
- * preference changes
- *
- * 3.1 Data structures used
- *
- * For each ATS network (e.g. WAN, LAN, loopback) a struct Network
- * is used to specify network related information as total adresses
- * and active addresses in this network and the configured in- and
- * outbound quota. Each network also contains a list of addresses
- * added to the solver located in this network. The proportional
- * solver uses the addresses' solver_information field to store the
- * proportional network it belongs to for each address.
- *
- * 3.2 Initializing
- *
- * When the proportional solver is initialized the solver creates a
- * new solver handle and initializes the network structures with
- * the quotas passed from addresses and returns the handle solver.
- *
- * 3.3 Adding an address
- *
- * When a new address is added to the solver using s_add, a lookup
- * for the network for this address is done and the address is
- * enqueued in in the linked list of the network.
- *
- * 3.4 Updating an address
- *
- * The main purpose of address updates is to update the ATS
- * information for addresse selection. Important for the proportional
- * solver is when an address switches network it is located
- * in. This is common because addresses added by transport's
- * validation mechanism are commonly located in
- * #GNUNET_ATS_NET_UNSPECIFIED. Addresses in validation are located
- * in this network type and only if a connection is successful on
- * return of payload data transport switches to the real network
- * the address is located in. When an address changes networks it
- * is first of all removed from the old network using the solver
- * API function #GAS_proportional_address_delete() and the network in
- * the address struct is updated. A lookup for the respective new
- * proportional network is done and stored in the addresse's
- * solver_information field. Next the address is re-added to the
- * solver using the solver API function
- * #GAS_proportional_address_add(). If the address was marked as in
- * active, the solver checks if bandwidth is available in the
- * network and if yes sets the address to active and updates the
- * bandwidth distribution in this network. If no bandwidth is
- * available it sets the bandwidth for this address to 0 and tries
- * to suggest an alternative address. If an alternative address was
- * found, addresses' callback is called for this address.
- *
- * 3.5 Deleting an address
- *
- * When an address is removed from the solver, it removes the
- * respective address from the network and if the address was
- * marked as active, it updates the bandwidth distribution for this
- * network.
- *
- * 3.6 Requesting addresses
- *
- * When an address is requested for a peer the solver performs a
- * lookup for the peer entry in addresses address hashmap and
- * selects the best address. The selection of the most suitable
- * address is done in the find_address_it hashmap iterator
- * described in detail in section 3.7. If no address is returned,
- * no address can be suggested at the moment. If the address
- * returned is marked as active, the solver can return this
- * address. If the address is not marked as active, the solver
- * checks if another address belongign to this peer is marked as
- * active and marks the address as inactive, updates the bandwidth
- * for this address to 0, call the bandwidth changed callback for
- * this address due to the change and updates quota assignment for
- * the addresse's network. the now in-active address is belonging
- * to. The solver marks the new address as active and updates the
- * bandwidth assignment for this network.
- *
- * 3.7 Choosing addresses
- *
- * Choosing the best possible address for suggestion is done by
- * iterating over all addresses of a peer stored in addresses'
- * hashmap and using the hashmap iterator find_address_it to select
- * the best available address. Several checks are done when an
- * address is selected. First if this address is currently blocked
- * by addresses from being suggested. An address is blocked for the
- * duration of #ATS_BLOCKING_DELTA when it is suggested to
- * transport. Next it is checked if at least
- * #GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT bytes bandwidth is available
- * in the addresse's network, because suggesting an address without
- * bandwidth does not make sense. This also ensures that all active
- * addresses in this network get at least the minimum amount of
- * bandwidth assigned. In the next step the solver ensures that for
- * tcp connections inbound connections are prefered over outbound
- * connections. In the next stet the solver ensures that
- * connections are prefered in the following order: * connections
- * are already established and have bandwidth assigned *
- * connections with a shorter distance * connectes have a shorter
- * latency
- *
- * 3.8 Changing preferences
- *
- * 3.9 Shutdown
- *
- * During shutdown all network entries and aging processes are
- * destroyed and freed.
- *
- *
- * OLD DOCUMENTATION
- *
- * This solver assigns in and outbound bandwidth equally for all
- * addresses in specific network type (WAN, LAN) based on configured
- * in and outbound quota for this network.
- *
- * The solver is notified by addresses about changes to the addresses
- * and recalculates the bandwith assigned if required. The solver
- * notifies addresses by calling the GAS_bandwidth_changed_cb
- * callback.
- *
- * - Initialization
- *
- *
- *
- *
- * For each peer only a single is selected and marked as "active" in the address
- * struct.
- *
- * E.g.:
- *
- * You have the networks WAN and LAN and quotas
- * WAN_TOTAL_IN, WAN_TOTAL_OUT
- * LAN_TOTAL_IN, LAN_TOTAL_OUT
- *
- * If you have x addresses in the network segment LAN, the quotas are
- * QUOTA_PER_ADDRESS = LAN_TOTAL_OUT / x
- *
- * Quotas are automatically recalculated and reported back when addresses are
- * - requested
- *
- */
- #define PROPORTIONALITY_FACTOR 2.0
- /**
- * A handle for the proportional solver
- */
- struct GAS_PROPORTIONAL_Handle
- {
- /**
- * Our execution environment.
- */
- struct GNUNET_ATS_PluginEnvironment *env;
- /**
- * Hashmap containing all valid addresses
- */
- struct GNUNET_CONTAINER_MultiPeerMap *addresses;
- /**
- * Pending address requests
- */
- struct GNUNET_CONTAINER_MultiPeerMap *requests;
- /**
- * Bulk lock
- */
- int bulk_lock;
- /**
- * Number of changes while solver was locked
- */
- int bulk_requests;
- /**
- * Total number of addresses for solver
- */
- unsigned int total_addresses;
- /**
- * Number of active addresses for solver
- */
- unsigned int active_addresses;
- /**
- * Networks array
- */
- struct Network *network_entries;
- /**
- * Number of networks
- */
- unsigned int network_count;
- /**
- * Proportionality factor
- */
- double prop_factor;
- /**
- * Stability factor
- */
- double stability_factor;
- };
- /**
- * Representation of a network
- */
- struct Network
- {
- /**
- * ATS network type
- */
- enum GNUNET_ATS_Network_Type type;
- /**
- * Network description
- */
- const char *desc;
- /**
- * Total inbound quota
- */
- unsigned long long total_quota_in;
- /**
- * Total outbound quota
- */
- unsigned long long total_quota_out;
- /**
- * Number of active addresses for this network
- */
- unsigned int active_addresses;
- /**
- * Number of total addresses for this network
- */
- unsigned int total_addresses;
- /**
- * String for statistics total addresses
- */
- char *stat_total;
- /**
- * String for statistics active addresses
- */
- char *stat_active;
- /**
- * Linked list of addresses in this network: head
- */
- struct AddressWrapper *head;
- /**
- * Linked list of addresses in this network: tail
- */
- struct AddressWrapper *tail;
- };
- /**
- * Address information stored in the solver
- */
- struct AddressSolverInformation
- {
- /**
- * Network scope this address is in
- */
- struct Network *network;
- /**
- * Inbound quota
- */
- uint32_t calculated_quota_in;
- /**
- * Outbound quota
- */
- uint32_t calculated_quota_out;
- /**
- * When was this address activated
- */
- struct GNUNET_TIME_Absolute activated;
- };
- /**
- * Wrapper for addresses to store them in network's linked list
- */
- struct AddressWrapper
- {
- /**
- * Next in DLL
- */
- struct AddressWrapper *next;
- /**
- * Previous in DLL
- */
- struct AddressWrapper *prev;
- /**
- * The address
- */
- struct ATS_Address *addr;
- };
- /**
- * Function used to unload the plugin.
- *
- * @param cls return value from #libgnunet_plugin_ats_proportional_init()
- */
- void *
- libgnunet_plugin_ats_proportional_done (void *cls)
- {
- struct GNUNET_ATS_SolverFunctions *sf = cls;
- struct GAS_PROPORTIONAL_Handle *s = sf->cls;
- struct AddressWrapper *cur;
- struct AddressWrapper *next;
- int c;
- for (c = 0; c < s->network_count; c++)
- {
- if (s->network_entries[c].total_addresses > 0)
- {
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Had %u addresses for network `%s' not deleted during shutdown\n",
- s->network_entries[c].total_addresses, s->network_entries[c].desc);
- //GNUNET_break(0);
- }
- if (s->network_entries[c].active_addresses > 0)
- {
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Had %u active addresses for network `%s' not deleted during shutdown\n",
- s->network_entries[c].active_addresses, s->network_entries[c].desc);
- //GNUNET_break(0);
- }
- next = s->network_entries[c].head;
- while (NULL != (cur = next))
- {
- next = cur->next;
- GNUNET_CONTAINER_DLL_remove(s->network_entries[c].head,
- s->network_entries[c].tail, cur);
- GNUNET_free_non_null (cur->addr->solver_information);
- GNUNET_free(cur);
- }
- GNUNET_free(s->network_entries[c].stat_total);
- GNUNET_free(s->network_entries[c].stat_active);
- }
- if (s->total_addresses > 0)
- {
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Had %u addresses not deleted during shutdown\n", s->total_addresses);
- // GNUNET_break(0);
- }
- if (s->active_addresses > 0)
- {
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Had %u active addresses not deleted during shutdown\n",
- s->active_addresses);
- // GNUNET_break (0);
- }
- GNUNET_free (s->network_entries);
- GNUNET_CONTAINER_multipeermap_destroy (s->requests);
- GNUNET_free (s);
- return NULL;
- }
- /**
- * Test if bandwidth is available in this network to add an additional address
- *
- * @param net the network type to update
- * @return #GNUNET_YES or #GNUNET_NO
- */
- static int
- is_bandwidth_available_in_network (struct Network *net)
- {
- GNUNET_assert(NULL != net);
- unsigned int na = net->active_addresses + 1;
- uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
- if (((net->total_quota_in / na) > min_bw)
- && ((net->total_quota_out / na) > min_bw))
- {
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Enough bandwidth available for %u active addresses in network `%s'\n",
- na, net->desc);
- return GNUNET_YES;
- }
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Not enough bandwidth available for %u active addresses in network `%s'\n",
- na, net->desc);
- return GNUNET_NO;
- }
- /**
- * Update bandwidth assigned to peers in this network
- *
- * @param s the solver handle
- * @param net the network type to update
- * this address
- */
- static void
- distribute_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
- struct Network *net)
- {
- struct AddressSolverInformation *asi;
- struct AddressWrapper *cur_address;
- unsigned long long remaining_quota_in = 0;
- unsigned long long quota_out_used = 0;
- unsigned long long remaining_quota_out = 0;
- unsigned long long quota_in_used = 0;
- int count_addresses;
- uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
- double relative_peer_prefence;
- double sum_relative_peer_prefences; /* Important: has to be double not float due to precision */
- double cur_pref; /* Important: has to be double not float due to precision */
- double peer_weight;
- double total_weight;
- const double *peer_relative_prefs = NULL; /* Important: has to be double not float due to precision */
- uint32_t assigned_quota_in = 0;
- uint32_t assigned_quota_out = 0;
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Recalculate quota for network type `%s' for %u addresses (in/out): %llu/%llu \n",
- net->desc,
- net->active_addresses,
- net->total_quota_in,
- net->total_quota_in);
- if (net->active_addresses == 0)
- {
- return; /* no addresses to update */
- }
- /* Idea
- * Assign every peer in network minimum Bandwidth
- * Distribute bandwidth left according to preference
- */
- if ((net->active_addresses * min_bw) > net->total_quota_in)
- {
- GNUNET_break(0);
- return;
- }
- if ((net->active_addresses * min_bw) > net->total_quota_out)
- {
- GNUNET_break(0);
- return;
- }
- remaining_quota_in = net->total_quota_in - (net->active_addresses * min_bw);
- remaining_quota_out = net->total_quota_out - (net->active_addresses * min_bw);
- LOG(GNUNET_ERROR_TYPE_DEBUG, "Remaining bandwidth : (in/out): %llu/%llu \n",
- remaining_quota_in, remaining_quota_out);
- sum_relative_peer_prefences = 0.0;
- /* Calculate sum of relative preference for active addresses in this network */
- count_addresses = 0;
- for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
- {
- if (GNUNET_YES != cur_address->addr->active)
- continue;
- GNUNET_assert( NULL != (peer_relative_prefs = s->env->get_preferences (s->env->cls,
- &cur_address->addr->peer)));
- relative_peer_prefence = 0.0;
- relative_peer_prefence += peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
- sum_relative_peer_prefences += relative_peer_prefence;
- count_addresses ++;
- }
- if (count_addresses != net->active_addresses)
- {
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "%s: Counted %u active addresses, but network says to have %u active addresses\n",
- net->desc, count_addresses, net->active_addresses);
- for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
- {
- if (GNUNET_YES != cur_address->addr->active)
- continue;
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "Active: `%s' `%s' length %u\n",
- GNUNET_i2s (&cur_address->addr->peer),
- cur_address->addr->plugin,
- cur_address->addr->addr_len);
- }
- }
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Total relative preference %.3f for %u addresses in network %s\n",
- sum_relative_peer_prefences, net->active_addresses, net->desc);
- for (cur_address = net->head; NULL != cur_address; cur_address = cur_address->next)
- {
- if (GNUNET_YES == cur_address->addr->active)
- {
- GNUNET_assert( NULL != (peer_relative_prefs =
- s->env->get_preferences (s->env->cls,
- &cur_address->addr->peer)));
- cur_pref = peer_relative_prefs[GNUNET_ATS_PREFERENCE_BANDWIDTH];
- total_weight = net->active_addresses +
- s->prop_factor * sum_relative_peer_prefences;
- peer_weight = (1.0 + (s->prop_factor * cur_pref));
- assigned_quota_in = min_bw
- + ((peer_weight / total_weight) * remaining_quota_in);
- assigned_quota_out = min_bw
- + ((peer_weight / total_weight) * remaining_quota_out);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "New quota for peer `%s' with weight (cur/total) %.3f/%.3f (in/out): %llu / %llu\n",
- GNUNET_i2s (&cur_address->addr->peer), peer_weight, total_weight,
- assigned_quota_in, assigned_quota_out);
- }
- else
- {
- assigned_quota_in = 0;
- assigned_quota_out = 0;
- }
- quota_in_used += assigned_quota_in;
- quota_out_used += assigned_quota_out;
- /* Prevent overflow due to rounding errors */
- if (assigned_quota_in > UINT32_MAX)
- assigned_quota_in = UINT32_MAX;
- if (assigned_quota_out > UINT32_MAX)
- assigned_quota_out = UINT32_MAX;
- /* Compare to current bandwidth assigned */
- asi = cur_address->addr->solver_information;
- asi->calculated_quota_in = assigned_quota_in;
- asi->calculated_quota_out = assigned_quota_out;
- }
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Total bandwidth assigned is (in/out): %llu /%llu\n", quota_in_used,
- quota_out_used);
- if (quota_out_used > net->total_quota_out + 1) /* +1 is required due to rounding errors */
- {
- LOG(GNUNET_ERROR_TYPE_ERROR,
- "Total outbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
- net->active_addresses, quota_out_used, net->total_quota_out);
- }
- if (quota_in_used > net->total_quota_in + 1) /* +1 is required due to rounding errors */
- {
- LOG(GNUNET_ERROR_TYPE_ERROR,
- "Total inbound bandwidth assigned is larger than allowed (used/allowed) for %u active addresses: %llu / %llu\n",
- net->active_addresses, quota_in_used, net->total_quota_in);
- }
- }
- /**
- * Context for finding the best address* Linked list of addresses in this network: head
- */
- struct FindBestAddressCtx
- {
- /**
- * The solver handle
- */
- struct GAS_PROPORTIONAL_Handle *s;
- /**
- * The currently best address
- */
- struct ATS_Address *best;
- };
- /**
- * Find index of a ATS property type in the array.
- */
- static int
- find_property_index (uint32_t type)
- {
- int existing_types[] = GNUNET_ATS_QualityProperties;
- int c;
- for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
- if (existing_types[c] == type)
- return c;
- return GNUNET_SYSERR;
- }
- /**
- * Find a "good" address to use for a peer by iterating over the addresses for this peer.
- * If we already have an existing address, we stick to it.
- * Otherwise, we pick by lowest distance and then by lowest latency.
- *
- * @param cls the `struct FindBestAddressCtx *' where we store the result
- * @param key unused
- * @param value another `struct ATS_Address*` to consider using
- * @return #GNUNET_OK (continue to iterate)
- */
- static int
- find_best_address_it (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
- {
- struct FindBestAddressCtx *ctx = cls;
- struct ATS_Address *current = value;
- struct ATS_Address *current_best = current;
- struct AddressSolverInformation *asi;
- struct GNUNET_TIME_Relative active_time;
- struct GNUNET_TIME_Relative min_active_time;
- const double *norm_prop_cur;
- const double *norm_prop_best;
- double best_delay;
- double best_distance;
- double cur_delay;
- double cur_distance;
- int index;
- current_best = NULL;
- asi = current->solver_information;
- if (NULL == asi)
- {
- GNUNET_break (0);
- return GNUNET_OK;
- }
- if (GNUNET_NO == is_bandwidth_available_in_network (asi->network))
- {
- return GNUNET_OK; /* There's no bandwidth available in this network */
- }
- if (NULL != ctx->best)
- {
- /* Compare current addresses with denominated 'best' address */
- current_best = ctx->best;
- }
- else
- {
- /* We do not have a 'best' address so take this address */
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Setting initial address %p\n",
- current);
- current_best = current;
- goto end;
- }
- if (GNUNET_YES == current->active)
- {
- GNUNET_assert (asi->activated.abs_value_us != GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us);
- active_time = GNUNET_TIME_absolute_get_duration (asi->activated);
- min_active_time.rel_value_us = ((double) GNUNET_TIME_UNIT_SECONDS.rel_value_us) *
- ctx->s->stability_factor;
- if (active_time.rel_value_us <= min_active_time.rel_value_us)
- {
- /* Keep active address for stability reasons */
- ctx->best = current;
- return GNUNET_NO;
- }
- }
- /* Now compare ATS information */
- norm_prop_cur = ctx->s->env->get_property (ctx->s->env->cls,
- current);
- index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
- cur_distance = norm_prop_cur[index];
- index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
- cur_delay = norm_prop_cur[index];
- norm_prop_best = ctx->s->env->get_property (ctx->s->env->cls,
- ctx->best);
- index = find_property_index (GNUNET_ATS_QUALITY_NET_DISTANCE);
- best_distance = norm_prop_best[index];
- index = find_property_index (GNUNET_ATS_QUALITY_NET_DELAY);
- best_delay = norm_prop_best[index];
- /* user shorter distance */
- if (cur_distance < best_distance)
- {
- if (GNUNET_NO == ctx->best->active)
- {
- current_best = current; /* Use current */
- }
- else if ((best_distance / cur_distance) > ctx->s->stability_factor)
- {
- /* Best and active address performs worse */
- current_best = current;
- }
- }
- else
- {
- /* Use current best */
- current_best = ctx->best;
- }
- /* User connection with less delay */
- if (cur_delay < best_delay)
- {
- if (GNUNET_NO == ctx->best->active)
- {
- current_best = current; /* Use current */
- }
- else if ((best_delay / cur_delay) > ctx->s->stability_factor)
- {
- /* Best and active address performs worse */
- current_best = current;
- }
- }
- else
- {
- /* Use current best */
- current_best = ctx->best;
- }
- end:
- ctx->best = current_best;
- return GNUNET_OK;
- }
- /**
- * Find the currently best address for a peer from the set of addresses available
- * or return NULL of no address is available
- *
- * @param s the proportional handle
- * @param addresses the address hashmap
- * @param id the peer id
- * @return the address or NULL
- */
- struct ATS_Address *
- get_best_address (struct GAS_PROPORTIONAL_Handle *s,
- struct GNUNET_CONTAINER_MultiPeerMap *addresses,
- const struct GNUNET_PeerIdentity *id)
- {
- struct FindBestAddressCtx fba_ctx;
- fba_ctx.best = NULL;
- fba_ctx.s = s;
- GNUNET_CONTAINER_multipeermap_get_multiple (addresses,
- id,
- &find_best_address_it,
- &fba_ctx);
- return fba_ctx.best;
- }
- /**
- * Hashmap Iterator to find current active address for peer
- *
- * @param cls last active address
- * @param key peer's key
- * @param value address to check
- * @return #GNUNET_NO on double active address else #GNUNET_YES;
- */
- static int
- get_active_address_it (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
- {
- struct ATS_Address **dest = cls;
- struct ATS_Address *aa = (struct ATS_Address *) value;
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Checking address %p\n", aa);
- if (GNUNET_YES == aa->active)
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Address %p is active\n", aa);
- if (NULL != (*dest))
- {
- /* should never happen */
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "Multiple active addresses for peer `%s'\n",
- GNUNET_i2s (&aa->peer));
- GNUNET_break(0);
- return GNUNET_NO;
- }
- (*dest) = aa;
- }
- return GNUNET_OK;
- }
- /**
- * Find current active address for peer
- *
- * @param solver the solver handle
- * @param addresses the address set
- * @param peer the peer
- * @return active address or NULL
- */
- static struct ATS_Address *
- get_active_address (void *solver,
- const struct GNUNET_CONTAINER_MultiPeerMap * addresses,
- const struct GNUNET_PeerIdentity *peer)
- {
- static struct ATS_Address *dest;
- dest = NULL;
- GNUNET_CONTAINER_multipeermap_get_multiple (addresses, peer,
- &get_active_address_it,
- &dest);
- return dest;
- }
- /**
- * Lookup network struct by type
- *
- * @param s the solver handle
- * @param type the network type
- * @return the network struct
- */
- static struct Network *
- get_network (struct GAS_PROPORTIONAL_Handle *s,
- enum GNUNET_ATS_Network_Type type)
- {
- if (type >= s->env->network_count)
- {
- GNUNET_break (0);
- return NULL;
- }
- return &s->network_entries[type];
- }
- /**
- * Increase address count in network
- *
- * @param s the solver handle
- * @param net the network type
- * @param total increase total addresses
- * @param active increase active addresses
- */
- static void
- address_increment (struct GAS_PROPORTIONAL_Handle *s,
- struct Network *net,
- int total,
- int active)
- {
- if (GNUNET_YES == total)
- {
- s->total_addresses++;
- net->total_addresses++;
- GNUNET_STATISTICS_update (s->env->stats,
- "# ATS addresses total", 1, GNUNET_NO);
- GNUNET_STATISTICS_update (s->env->stats,
- net->stat_total, 1, GNUNET_NO);
- }
- if (GNUNET_YES == active)
- {
- net->active_addresses++;
- s->active_addresses++;
- GNUNET_STATISTICS_update (s->env->stats,
- "# ATS active addresses total", 1,
- GNUNET_NO);
- GNUNET_STATISTICS_update (s->env->stats,
- net->stat_active, 1, GNUNET_NO);
- }
- }
- /**
- * Decrease address count in network
- *
- * @param s the solver handle
- * @param net the network type
- * @param total decrease total addresses
- * @param active decrease active addresses
- */
- static int
- addresse_decrement (struct GAS_PROPORTIONAL_Handle *s,
- struct Network *net,
- int total,
- int active)
- {
- int res = GNUNET_OK;
- if (GNUNET_YES == total)
- {
- if (s->total_addresses < 1)
- {
- GNUNET_break(0);
- res = GNUNET_SYSERR;
- }
- else
- {
- s->total_addresses--;
- GNUNET_STATISTICS_update (s->env->stats,
- "# ATS addresses total", -1,
- GNUNET_NO);
- }
- if (net->total_addresses < 1)
- {
- GNUNET_break(0);
- res = GNUNET_SYSERR;
- }
- else
- {
- net->total_addresses--;
- GNUNET_STATISTICS_update (s->env->stats,
- net->stat_total, -1, GNUNET_NO);
- }
- }
- if (GNUNET_YES == active)
- {
- if (net->active_addresses < 1)
- {
- GNUNET_break(0);
- res = GNUNET_SYSERR;
- }
- else
- {
- net->active_addresses--;
- GNUNET_STATISTICS_update (s->env->stats,
- net->stat_active, -1, GNUNET_NO);
- }
- if (s->active_addresses < 1)
- {
- GNUNET_break(0);
- res = GNUNET_SYSERR;
- }
- else
- {
- s->active_addresses--;
- GNUNET_STATISTICS_update (s->env->stats,
- "# ATS addresses total", -1,
- GNUNET_NO);
- }
- }
- return res;
- }
- /**
- * Compares addresses
- *
- * @param a address a
- * @param b address b
- * @return GNUNET_YES if equal, GNUNET_NO else
- */
- static int
- address_eq (struct ATS_Address *a, struct ATS_Address *b)
- {
- GNUNET_assert (NULL != a);
- GNUNET_assert (NULL != b);
- if (0 != strcmp(a->plugin, b->plugin))
- return GNUNET_NO;
- if (a->addr_len != b->addr_len)
- return GNUNET_NO;
- if (0 != memcmp (a->addr, b->addr, b->addr_len))
- return GNUNET_NO;
- if (a->session_id != b->session_id)
- return GNUNET_NO;
- return GNUNET_YES;
- }
- /**
- * Notify bandwidth changes to addresses
- *
- * @param s solver handle
- * @param net the network to propagate changes in
- */
- static void
- propagate_bandwidth (struct GAS_PROPORTIONAL_Handle *s,
- struct Network *net)
- {
- struct AddressWrapper *cur;
- struct AddressSolverInformation *asi;
- for (cur = net->head; NULL != cur; cur = cur->next)
- {
- asi = cur->addr->solver_information;
- if ( (cur->addr->assigned_bw_in != asi->calculated_quota_in) ||
- (cur->addr->assigned_bw_out != asi->calculated_quota_out) )
- {
- cur->addr->assigned_bw_in = asi->calculated_quota_in;
- cur->addr->assigned_bw_out = asi->calculated_quota_out;
- /* Reset for next iteration */
- asi->calculated_quota_in = 0;
- asi->calculated_quota_out = 0;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Bandwidth for %s address %p for peer `%s' changed to %u/%u\n",
- (GNUNET_NO == cur->addr->active) ? "inactive" : "active",
- cur->addr,
- GNUNET_i2s (&cur->addr->peer),
- cur->addr->assigned_bw_in,
- cur->addr->assigned_bw_out);
- /* Notify on change */
- if ((GNUNET_YES == cur->addr->active))
- {
- s->env->bandwidth_changed_cb (s->env->cls,
- cur->addr);
- }
- }
- }
- }
- /**
- * Distribibute bandwidth
- *
- * @param s the solver handle
- * @param n the network, can be NULL for all network
- */
- static void
- distribute_bandwidth_in_network (struct GAS_PROPORTIONAL_Handle *s,
- struct Network *n)
- {
- if (GNUNET_YES == s->bulk_lock)
- {
- s->bulk_requests++;
- return;
- }
- if (NULL != n)
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Redistributing bandwidth in network %s with %u active and %u total addresses\n",
- GNUNET_ATS_print_network_type(n->type),
- n->active_addresses, n->total_addresses);
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_START,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
- /* Distribute */
- distribute_bandwidth(s, n);
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_STOP,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
- /* Do propagation */
- propagate_bandwidth (s, n);
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_SINGLE);
- }
- else
- {
- int i;
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_START,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
- for (i = 0; i < s->network_count; i++)
- {
- /* Distribute */
- distribute_bandwidth(s, &s->network_entries[i]);
- }
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_STOP,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_START,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
- for (i = 0; i < s->network_count; i++)
- {
- /* Do propagation */
- propagate_bandwidth(s, &s->network_entries[i]);
- }
- if (NULL != s->env->info_cb)
- s->env->info_cb(s->env->cls, GAS_OP_SOLVE_UPDATE_NOTIFICATION_STOP,
- GAS_STAT_SUCCESS, GAS_INFO_PROP_ALL);
- }
- }
- /**
- * Update active address for a peer:
- * Check if active address exists and what the best address is, if addresses
- * are different switch
- *
- * @param s solver handle
- * @param peer the peer to check
- * return the new address or NULL if no update was performed
- */
- static struct ATS_Address *
- update_active_address (struct GAS_PROPORTIONAL_Handle *s,
- const struct GNUNET_PeerIdentity *peer)
- {
- struct ATS_Address *best_address;
- struct ATS_Address *current_address;
- struct AddressSolverInformation *asi;
- struct Network *net;
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Updating active address for peer `%s'\n",
- GNUNET_i2s (peer));
- /* Find active address */
- current_address = get_active_address (s,
- s->addresses,
- peer);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Peer `%s' has active address %p\n",
- GNUNET_i2s (peer),
- current_address);
- /* Find best address */
- best_address = get_best_address (s,
- s->addresses,
- peer);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Peer `%s' has best address %p\n",
- GNUNET_i2s (peer),
- best_address);
- if (NULL != current_address)
- {
- if ( (NULL == best_address) ||
- ( (NULL != best_address) &&
- (GNUNET_NO == address_eq (current_address,
- best_address)) ) )
- {
- /* We switch to a new address (or to none),
- mark old address as inactive */
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Disabling previous %s address %p for peer `%s'\n",
- (GNUNET_NO == current_address->active) ? "inactive" : "active",
- current_address,
- GNUNET_i2s (peer));
- asi = current_address->solver_information;
- GNUNET_assert (NULL != asi);
- net = asi->network;
- asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
- current_address->active = GNUNET_NO; /* No active any longer */
- current_address->assigned_bw_in = 0; /* no bandwidth assigned */
- current_address->assigned_bw_out = 0; /* no bandwidth assigned */
- if (GNUNET_SYSERR == addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
- GNUNET_break(0);
- /* Update network of previous address */
- distribute_bandwidth_in_network (s, net);
- }
- if (NULL == best_address)
- {
- /* We previously had an active address, but now we cannot suggest one
- * Therefore we have to disconnect the peer */
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Disconnecting peer `%s' with previous address %p\n",
- GNUNET_i2s (peer),
- current_address);
- s->env->bandwidth_changed_cb (s->env->cls,
- current_address);
- }
- }
- if (NULL == best_address)
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Cannot suggest address for peer `%s'\n",
- GNUNET_i2s (peer));
- return NULL;
- }
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Suggesting new address %p for peer `%s'\n",
- best_address,
- GNUNET_i2s (peer));
- if ( (NULL != current_address) &&
- (GNUNET_YES == address_eq (best_address, current_address)) )
- {
- GNUNET_break (GNUNET_NO != current_address->active);
- return best_address; /* Same same */
- }
- asi = best_address->solver_information;
- GNUNET_assert (NULL != asi);
- net = asi->network;
- /* Mark address as active */
- asi->activated = GNUNET_TIME_absolute_get ();
- best_address->active = GNUNET_YES;
- address_increment (s, net, GNUNET_NO, GNUNET_YES);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Address %p for peer `%s' is now active\n",
- best_address,
- GNUNET_i2s (peer));
- /* Distribute bandwidth */
- distribute_bandwidth_in_network (s, net);
- return best_address;
- }
- /**
- * Changes the preferences for a peer in the problem
- *
- * @param solver the solver handle
- * @param peer the peer to change the preference for
- * @param kind the kind to change the preference
- * @param pref_rel the normalized preference value for this kind over all clients
- */
- static void
- GAS_proportional_address_change_preference (void *solver,
- const struct GNUNET_PeerIdentity *peer,
- enum GNUNET_ATS_PreferenceKind kind,
- double pref_rel)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- struct ATS_Address *best_address;
- struct ATS_Address *active_address;
- struct AddressSolverInformation *asi;
- if (GNUNET_NO ==
- GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
- return; /* Peer is not requested */
- /* This peer is requested, find best address */
- active_address = get_active_address (s, s->addresses, peer);
- best_address = update_active_address (s, peer);
- if ((NULL != best_address) && ((NULL != active_address) &&
- (GNUNET_YES == address_eq (active_address, best_address))))
- {
- asi = best_address->solver_information;
- GNUNET_assert (NULL != asi);
- /* We sticked to the same address, therefore redistribute */
- distribute_bandwidth_in_network (s, asi->network);
- }
- }
- /**
- * Get application feedback for a peer
- *
- * @param solver the solver handle
- * @param application the application
- * @param peer the peer to change the preference for
- * @param scope the time interval for this feedback: [now - scope .. now]
- * @param kind the kind to change the preference
- * @param score the score
- */
- static void
- GAS_proportional_address_preference_feedback (void *solver,
- struct GNUNET_SERVER_Client *application,
- const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_TIME_Relative scope,
- enum GNUNET_ATS_PreferenceKind kind,
- double score)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- GNUNET_assert(NULL != peer);
- GNUNET_assert(NULL != s);
- }
- /**
- * Get the preferred address for a specific peer
- *
- * @param solver the solver handle
- * @param peer the identity of the peer
- * @return best address
- */
- static const struct ATS_Address *
- GAS_proportional_get_preferred_address (void *solver,
- const struct GNUNET_PeerIdentity *peer)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- const struct ATS_Address *best_address;
- /* Add to list of pending requests */
- if (GNUNET_NO ==
- GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
- {
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multipeermap_put (s->requests,
- peer,
- NULL,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Start suggesting addresses for peer `%s'\n",
- GNUNET_i2s (peer));
- }
- best_address = update_active_address (s, peer);
- if (s->bulk_lock > 0)
- return NULL; /* Do not suggest since bulk lock is pending */
- return best_address;
- }
- /**
- * Stop notifying about address and bandwidth changes for this peer
- *
- * @param solver the solver handle
- * @param peer the peer
- */
- static void
- GAS_proportional_stop_get_preferred_address (void *solver,
- const struct GNUNET_PeerIdentity *peer)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- struct ATS_Address *cur;
- struct AddressSolverInformation *asi;
- struct Network *cur_net;
- if (GNUNET_YES ==
- GNUNET_CONTAINER_multipeermap_contains (s->requests, peer))
- {
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multipeermap_remove (s->requests,
- peer,
- NULL));
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Stop suggesting addresses for peer `%s'\n",
- GNUNET_i2s (peer));
- }
- cur = get_active_address (s,
- s->addresses,
- peer);
- if (NULL != cur)
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Disabling %s address %p for peer `%s'\n",
- (GNUNET_NO == cur->active) ? "inactive" : "active",
- cur,
- GNUNET_i2s (&cur->peer));
- /* Disabling current address */
- asi = cur->solver_information;
- cur_net = asi->network ;
- asi->activated = GNUNET_TIME_UNIT_ZERO_ABS;
- cur->active = GNUNET_NO; /* No active any longer */
- cur->assigned_bw_in = 0; /* no bandwidth assigned */
- cur->assigned_bw_out = 0; /* no bandwidth assigned */
- if (GNUNET_SYSERR ==
- addresse_decrement (s, cur_net, GNUNET_NO, GNUNET_YES))
- GNUNET_break(0);
- distribute_bandwidth_in_network (s, cur_net);
- }
- }
- /**
- * Remove an address from the solver
- *
- * @param solver the solver handle
- * @param address the address to remove
- * @param session_only delete only session not whole address
- */
- static void
- GAS_proportional_address_delete (void *solver,
- struct ATS_Address *address,
- int session_only)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- struct Network *net;
- struct AddressWrapper *aw;
- struct AddressSolverInformation *asi;
- /* Remove an adress completely, we have to:
- * - Remove from specific network
- * - Decrease number of total addresses
- * - If active:
- * - decrease number of active addreses
- * - update quotas
- */
- asi = address->solver_information;
- if (NULL == asi)
- {
- GNUNET_break (0);
- return;
- }
- net = asi->network;
- if (GNUNET_NO == session_only)
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Deleting %s address %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
- (GNUNET_NO == address->active) ? "inactive" : "active",
- address,
- GNUNET_i2s (&address->peer),
- net->desc,
- net->total_addresses,
- net->active_addresses);
- /* Remove address */
- addresse_decrement (s, net, GNUNET_YES, GNUNET_NO);
- for (aw = net->head; NULL != aw; aw = aw->next)
- {
- if (aw->addr == address)
- break;
- }
- if (NULL == aw)
- {
- GNUNET_break(0);
- return;
- }
- GNUNET_CONTAINER_DLL_remove (net->head,
- net->tail,
- aw);
- GNUNET_free (aw);
- }
- else
- {
- /* Remove session only: remove if active and update */
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Deleting %s session %p for peer `%s' from network `%s' (total: %u/ active: %u)\n",
- (GNUNET_NO == address->active) ? "inactive" : "active",
- address,
- GNUNET_i2s (&address->peer),
- net->desc,
- net->total_addresses,
- net->active_addresses);
- }
- if (GNUNET_YES == address->active)
- {
- /* Address was active, remove from network and update quotas*/
- address->active = GNUNET_NO;
- address->assigned_bw_in = 0;
- address->assigned_bw_out = 0;
- asi->calculated_quota_in = 0;
- asi->calculated_quota_out = 0;
- if (GNUNET_SYSERR ==
- addresse_decrement (s, net, GNUNET_NO, GNUNET_YES))
- GNUNET_break(0);
- distribute_bandwidth_in_network (s, net);
- if (NULL ==
- update_active_address (s, &address->peer))
- {
- /* No alternative address found, disconnect peer */
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Disconnecting peer `%s' after deleting previous address %p\n",
- GNUNET_i2s (&address->peer),
- address);
- s->env->bandwidth_changed_cb (s->env->cls,
- address);
- }
- }
- if (GNUNET_NO == session_only)
- {
- GNUNET_free_non_null (address->solver_information);
- address->solver_information = NULL;
- }
- LOG (GNUNET_ERROR_TYPE_INFO,
- "After deleting address now total %u and active %u addresses in network `%s'\n",
- net->total_addresses,
- net->active_addresses,
- net->desc);
- }
- /**
- * Start a bulk operation
- *
- * @param solver the solver
- */
- static void
- GAS_proportional_bulk_start (void *solver)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Locking solver for bulk operation ...\n");
- GNUNET_assert (NULL != solver);
- s->bulk_lock++;
- }
- /**
- * Bulk operation done
- */
- static void
- GAS_proportional_bulk_stop (void *solver)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Unlocking solver from bulk operation ...\n");
- if (s->bulk_lock < 1)
- {
- GNUNET_break(0);
- return;
- }
- s->bulk_lock--;
- if ((0 == s->bulk_lock) && (0 < s->bulk_requests))
- {
- LOG(GNUNET_ERROR_TYPE_INFO, "No lock pending, recalculating\n");
- distribute_bandwidth_in_network (s, NULL);
- s->bulk_requests = 0;
- }
- }
- /**
- * Add a new single address to a network
- *
- * @param solver the solver Handle
- * @param address the address to add
- * @param network network type of this address
- */
- static void
- GAS_proportional_address_add (void *solver,
- struct ATS_Address *address,
- uint32_t network);
- /**
- * Transport properties for this address have changed
- *
- * @param solver solver handle
- * @param address the address
- * @param type the ATSI type in HBO
- * @param abs_value the absolute value of the property
- * @param rel_value the normalized value
- */
- static void
- GAS_proportional_address_property_changed (void *solver,
- struct ATS_Address *address,
- uint32_t type,
- uint32_t abs_value,
- double rel_value)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- struct Network *n;
- struct AddressSolverInformation *asi;
- struct ATS_Address *best_address;
- struct ATS_Address *active_address;
- asi = address->solver_information;
- if (NULL == asi)
- {
- GNUNET_break(0);
- return;
- }
- n = asi->network;
- if (NULL == n)
- {
- GNUNET_break(0);
- return;
- }
- LOG(GNUNET_ERROR_TYPE_INFO,
- "Property `%s' for peer `%s' address %p changed to %.2f \n",
- GNUNET_ATS_print_property_type (type), GNUNET_i2s (&address->peer),
- address, rel_value);
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
- return; /* Peer is not requested */
- /* This peer is requested, find active and best address */
- active_address = get_active_address(s, s->addresses, &address->peer);
- best_address = update_active_address (s,
- &address->peer);
- if ((NULL != best_address) && ((NULL != active_address) &&
- (GNUNET_YES == address_eq (active_address, best_address))))
- {
- asi = best_address->solver_information;
- GNUNET_assert (NULL != asi);
- /* We sticked to the same address, therefore redistribute */
- distribute_bandwidth_in_network (s, asi->network);
- }
- }
- /**
- * Add a new single address to a network
- *
- * @param solver the solver Handle
- * @param address the address to add
- * @param network network type of this address
- */
- static void
- GAS_proportional_address_add (void *solver,
- struct ATS_Address *address,
- enum GNUNET_ATS_Network_Type network)
- {
- struct GAS_PROPORTIONAL_Handle *s = solver;
- struct Network *net;
- struct AddressWrapper *aw;
- struct AddressSolverInformation *asi;
- net = get_network (s, network);
- if (NULL == net)
- {
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "Unknown network %u `%s' for new address %p for peer `%s'\n",
- network,
- GNUNET_ATS_print_network_type (network),
- address,
- GNUNET_i2s (&address->peer));
- return;
- }
- aw = GNUNET_new (struct AddressWrapper);
- aw->addr = address;
- GNUNET_CONTAINER_DLL_insert(net->head, net->tail, aw);
- address_increment (s, net, GNUNET_YES, GNUNET_NO);
- asi = GNUNET_new (struct AddressSolverInformation);
- asi->network = net;
- asi->calculated_quota_in = 0;
- asi->calculated_quota_out = 0;
- aw->addr->solver_information = asi;
- LOG(GNUNET_ERROR_TYPE_INFO,
- "Adding new address %p for peer `%s', now total %u and active %u addresses in network `%s'\n",
- address, GNUNET_i2s(&address->peer), net->total_addresses, net->active_addresses, net->desc);
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (s->requests, &address->peer))
- return; /* Peer is not requested */
- /* This peer is requested, find best address */
- update_active_address (s, &address->peer);
- }
- /**
- * Function invoked when the plugin is loaded.
- *
- * @param[in,out] cls the `struct GNUNET_ATS_PluginEnvironment *` to use;
- * modified to return the API functions (ugh).
- * @return the `struct GAS_PROPORTIONAL_Handle` to pass as a closure
- */
- void *
- libgnunet_plugin_ats_proportional_init (void *cls)
- {
- static struct GNUNET_ATS_SolverFunctions sf;
- struct GNUNET_ATS_PluginEnvironment *env = cls;
- struct GAS_PROPORTIONAL_Handle *s;
- struct Network * cur;
- float f_tmp;
- int c;
- GNUNET_assert (NULL != env);
- GNUNET_assert (NULL != env->cfg);
- GNUNET_assert (NULL != env->bandwidth_changed_cb);
- GNUNET_assert (NULL != env->get_preferences);
- GNUNET_assert (NULL != env->get_property);
- s = GNUNET_new (struct GAS_PROPORTIONAL_Handle);
- s->env = env;
- sf.cls = s;
- sf.s_add = &GAS_proportional_address_add;
- sf.s_address_update_property = &GAS_proportional_address_property_changed;
- sf.s_get = &GAS_proportional_get_preferred_address;
- sf.s_get_stop = &GAS_proportional_stop_get_preferred_address;
- sf.s_pref = &GAS_proportional_address_change_preference;
- sf.s_feedback = &GAS_proportional_address_preference_feedback;
- sf.s_del = &GAS_proportional_address_delete;
- sf.s_bulk_start = &GAS_proportional_bulk_start;
- sf.s_bulk_stop = &GAS_proportional_bulk_stop;
- s->network_entries = GNUNET_malloc (env->network_count * sizeof (struct Network));
- /* Init */
- s->active_addresses = 0;
- s->total_addresses = 0;
- s->bulk_lock = GNUNET_NO;
- s->addresses = env->addresses;
- s->requests = GNUNET_CONTAINER_multipeermap_create (10, GNUNET_NO);
- s->stability_factor = PROP_STABILITY_FACTOR;
- if (GNUNET_SYSERR !=
- GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
- "PROP_STABILITY_FACTOR", &f_tmp))
- {
- if ((f_tmp < 1.0) || (f_tmp > 2.0))
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _("Invalid %s configuration %f \n"),
- "PROP_STABILITY_FACTOR",
- f_tmp);
- }
- else
- {
- s->stability_factor = f_tmp;
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Using %s of %.3f\n",
- "PROP_STABILITY_FACTOR", f_tmp);
- }
- }
- s->prop_factor = PROPORTIONALITY_FACTOR;
- if (GNUNET_SYSERR !=
- GNUNET_CONFIGURATION_get_value_float (env->cfg, "ats",
- "PROP_PROPORTIONALITY_FACTOR",
- &f_tmp))
- {
- if (f_tmp < 1.0)
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _("Invalid %s configuration %f \n"),
- "PROP_PROPORTIONALITY_FACTOR", f_tmp);
- }
- else
- {
- s->prop_factor = f_tmp;
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Using %s of %.3f\n",
- "PROP_PROPORTIONALITY_FACTOR", f_tmp);
- }
- }
- for (c = 0; c < env->network_count; c++)
- {
- cur = &s->network_entries[c];
- cur->type = c;
- cur->total_quota_in = env->in_quota[c];
- cur->total_quota_out = env->out_quota[c];
- cur->desc = GNUNET_ATS_print_network_type (c);
- GNUNET_asprintf (&cur->stat_total,
- "# ATS addresses %s total",
- cur->desc);
- GNUNET_asprintf (&cur->stat_active,
- "# ATS active addresses %s total",
- cur->desc);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Added network %u `%s' (%llu/%llu)\n",
- c,
- cur->desc,
- cur->total_quota_in,
- cur->total_quota_out);
- }
- return &sf;
- }
- /* end of plugin_ats_proportional.c */
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