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3 (C) 2011 Christian Grothoff (and other contributing authors)
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22 * @file ats/gnunet-service-ats_addresses.c
23 * @brief ats service address management
24 * @author Matthias Wachs
25 * @author Christian Grothoff
28 #include "gnunet_ats_service.h"
29 #include "gnunet-service-ats.h"
30 #include "gnunet-service-ats_addresses.h"
31 #include "gnunet-service-ats_normalization.h"
32 #include "gnunet-service-ats_performance.h"
33 #include "gnunet-service-ats_scheduling.h"
34 #include "gnunet-service-ats_reservations.h"
36 #include "gnunet-service-ats_addresses_mlp.h"
38 #include "gnunet-service-ats-solver_proportional.h"
41 * NOTE: Do not change this documentation. This documentation is based on
42 * gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
43 * use build_txt.sh to generate plaintext output
45 * 1 ATS addresses : ATS address management
47 * This ATS addresses ("addresses") component manages the addresses known to
48 * ATS service and suggests addresses to transport service when it is
49 * interested in address suggestion for a peer. ATS addresses also
50 * instantiates the bandwidth assignment mechanism (solver), notifies it
51 * about changes to addresses and forwards changes to bandwidth assignments
52 * to transport, depending if transport is interested in this change.
58 * Addresses are added by specifying peer ID, plugin, address, address length
59 * and session, if available. ATS information can be specified if available.
63 * ATS specifies a fix set of networks an address can belong to. For each
64 * network an inbound and outbound quota will be specified. The available
65 * networks and addtional helper varaibles are defined in
66 * gnunet_ats_service.h. At the moment 5 networks are defined:
67 * * GNUNET_ATS_NET_UNSPECIFIED
68 * * GNUNET_ATS_NET_LOOPBACK
69 * * GNUNET_ATS_NET_LAN
70 * * GNUNET_ATS_NET_WAN
71 * * GNUNET_ATS_NET_WLAN
73 * The total number of networks defined is stored in
74 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
75 * initializer for an int array, while GNUNET_ATS_NetworkType is an
76 * initializer for a char array containing a string description of all
81 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
82 * is loaded from ats configuration during initialization. This quota defines
83 * to total amount of inbound and outbound traffic allowed for a specific
84 * network. The configuration values used are in section ats:
85 * * "NETWORK"_QUOTA_IN = <value>
86 * * "NETWORK"_QUOTA_IN = <value>
88 * You can specify quotas by setting the <value> to a:
89 * * unrestricted: unlimited
90 * * number of bytes: e.g. 10240
91 * * fancy value: e.g. 64 Kib
93 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
94 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
96 * * GNUNET_ATS_DefaultBandwidth: 65536
97 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
98 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
100 * Details of loading quotas and default values will be described on
102 * 1.1.4 Preference values
104 * 1.2 Data structures used
106 * Addresse uses struct ATS_Address for each address. The structs are stored
107 * in a linked list and provides a pointer void *solver_information for the
108 * solver to store address specific information. It provides the int values
109 * active which is set to GNUNET_YES if the address is select for transport
110 * use and used, representing that transport service is actively using this
111 * address. Address information are stored in peer, addr, addr_len, plugin.
115 * During initialization a hashmap to store addresses is created. The quotas
116 * for all networks defined for ATS are loaded from configuration. For each
117 * network first the logic will check if the string
118 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
119 * the configured value as a fancy size and if this fails it will try to use
120 * it as a value_number. If no configuration value is found it will assign
121 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
122 * configured solver using configuration "[ats]:MODE". Current solvers are
123 * MODE_SIMPLISTIC, MODE_MLP. Interaction is done using a solver API
128 * * s_init: init the solver with required information
129 * * s_add: add a new address
130 * * s_update: update ATS values or session for an address
131 * * s_get: get prefered address for a peer
132 * * s_del: delete an address
133 * * s_pref: change preference value for a peer
134 * * s_done: shutdown solver
136 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
137 * solver which is called when bandwidth assigned to peer has changed
141 * During shutdown all addresses are freed and the solver told to shutdown
143 * 1.6 Addresses and sessions
145 * Addresses consist of the address itself and a numerical session. When a
146 * new address without a session is added it has no session, so it gets
147 * session 0 assigned. When an address with a session is added and an address
148 * object with session 0 is found, this object is updated with the session
149 * otherwise a new address object with this session assigned is created.
153 * Addresses a1,a2 with session s1, s2 are "exact" if:
154 * (a1 == a2)&&(s1 == s2)
155 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
156 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
158 * 1.7 Address management
160 * Transport service notifies ATS about changes to the addresses known to
163 * 1.7.1 Adding an address
165 * When transport learns a new address it tells ATS and ATS is telling
166 * addresses about it using GAS_address_add. If not known to addresses it
167 * creates a new address object and calls solver's s_add. ATS information are
168 * deserialized and solver is notified about the session and ATS information
171 * 1.7.2 Updating an address
173 * Addresses does an lookup up for the existing address with the given
174 * session. If disassembles included ATS information and notifies the solver
175 * using s_update about the update.
177 * 1.7.3 Deleting an address
179 * Addresses does an lookup for the exact address and session and if removes
180 * this address. If session != 0 the session is set to 0 and the address is
181 * kept. If session == 0, the addresses is removed.
183 * 1.7.4 Requesting an address suggestion
185 * The address client issues a request address message to be notified about
186 * address suggestions for a specific peer. Addresses asks the solver with
187 * s_get. If no address is available, it will not send a response, otherwise
188 * it will respond with the choosen address.
190 * 1.7.5 Address suggestions
192 * Addresses will notify the client automatically on any bandwidth_changed_cb
193 * by the solver if a address suggestion request is pending. If no address is
194 * available it will not respond at all If the client is not interested
195 * anymore, it has to cancel the address suggestion request.
197 * 1.7.6 Suggestions blocks and reset
199 * After suggesting an address it is blocked for ATS_BLOCKING_DELTA sec. to
200 * prevent the client from being thrashed. If the client requires immediately
201 * it can reset this block using GAS_addresses_handle_backoff_reset.
203 * 1.7.7 Marking address in use
205 * The client can notify addresses that it successfully uses an address and
206 * wants this address to be kept by calling GSA_address_in_use. Adresses will
207 * mark the address as used an notify the solver about the use.
209 * 1.7.8 Address lifecycle
212 * * (updated address) || (address in use)
215 * 1.8 Bandwidth assignment
217 * The addresses are used to perform resource allocation operations. ATS
218 * addresses takes care of instantiating the solver configured and notifies
219 * the respective solver about address changes and receives changes to the
220 * bandwidth assignment from the solver. The current bandwidth assignment is
221 * sent to transport. The specific solvers will be described in the specific
224 * 1.9 Changing peer preferences
226 * The bandwidth assigned to a peer can be influenced by setting a preference
227 * for a peer. The prefernce will be given to to the solver with s_pref which
228 * has to take care of the preference value
234 * Available ressource assignment modes
241 * Assign each peer an equal amount of bandwidth (bw)
243 * bw_per_peer = bw_total / #active addresses
250 * Solve ressource assignment as an optimization problem
251 * Uses an mixed integer programming solver
258 * Pending Address suggestion requests
260 struct GAS_Addresses_Suggestion_Requests
265 struct GAS_Addresses_Suggestion_Requests *next;
270 struct GAS_Addresses_Suggestion_Requests *prev;
275 struct GNUNET_PeerIdentity id;
280 * Handle for ATS address component
282 struct GAS_Addresses_Handle
287 struct GNUNET_STATISTICS_Handle *stat;
290 * A multihashmap to store all addresses
292 struct GNUNET_CONTAINER_MultiHashMap *addresses;
295 * Configure WAN quota in
297 unsigned long long wan_quota_in;
300 * Configure WAN quota out
302 unsigned long long wan_quota_out;
305 * Is ATS addresses running
310 * Configured ATS solver
320 * Address suggestion requests DLL head
322 struct GAS_Addresses_Suggestion_Requests *r_head;
325 * Address suggestion requests DLL tail
327 struct GAS_Addresses_Suggestion_Requests *r_tail;
329 /* Solver functions */
334 GAS_solver_init s_init;
337 * Add an address to the solver
339 GAS_solver_address_add s_add;
342 * Update address in solver
344 GAS_solver_address_update s_update;
347 * Get address from solver
349 GAS_solver_get_preferred_address s_get;
352 * Get address from solver
354 GAS_solver_stop_get_preferred_address s_get_stop;
357 * Delete address in solver
359 GAS_solver_address_delete s_del;
362 * Change relative preference for quality in solver
364 GAS_solver_address_change_preference s_pref;
369 GAS_solver_done s_done;
374 * Disassemble ATS information and update performance information in address
376 * Updates existing information and adds new information
378 * @param dest destination address
379 * @param update source ATS information
380 * @param update_count number of ATS information
381 * @param delta_dest ats performance information which were updated
382 * including previous value
383 * @param delta_count number of ATS information in the delta
384 * @return GNUNET_YES if address was address updated, GNUNET_NO otherwise
387 disassemble_ats_information (struct ATS_Address *dest,
388 const struct GNUNET_ATS_Information *update,
389 uint32_t update_count,
390 struct GNUNET_ATS_Information **delta_dest,
391 uint32_t *delta_count)
399 struct GNUNET_ATS_Information add_atsi[update_count];
400 struct GNUNET_ATS_Information delta_atsi[update_count];
401 struct GNUNET_ATS_Information *tmp_atsi;
402 uint32_t add_atsi_count;
403 uint32_t delta_atsi_count;
407 delta_atsi_count = 0;
409 if (0 == update_count)
412 if (NULL == dest->atsi)
414 /* Create performance information */
415 dest->atsi = GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
416 dest->atsi_count = update_count;
417 memcpy (dest->atsi, update, update_count * sizeof (struct GNUNET_ATS_Information));
418 delta_atsi_count = update_count;
419 (*delta_dest) = GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
420 for (c1 = 0; c1 < update_count; c1 ++)
422 (*delta_dest)[c1].type = update[c1].type;
423 (*delta_dest)[c1].value = htonl(GNUNET_ATS_VALUE_UNDEFINED);
425 (*delta_count) = update_count;
429 for (c1 = 0; c1 < update_count; c1++)
431 /* Update existing performance information */
433 for (c2 = 0; c2 < dest->atsi_count; c2++)
435 if (update[c1].type == dest->atsi[c2].type)
437 if (update[c1].value != dest->atsi[c2].value)
439 /* Save previous value in delta */
440 delta_atsi[delta_atsi_count] = dest->atsi[c2];
443 dest->atsi[c2].value = update[c1].value;
450 if (GNUNET_NO == found)
452 add_atsi[add_atsi_count] = update[c1];
454 delta_atsi[delta_atsi_count].type = update[c1].type;
455 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
460 if (add_atsi_count > 0)
462 /* Extend ats performance information */
464 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
465 (sizeof (struct GNUNET_ATS_Information)));
466 memcpy (tmp_atsi, dest->atsi, dest->atsi_count * sizeof (struct GNUNET_ATS_Information));
467 memcpy (&tmp_atsi[dest->atsi_count], add_atsi, add_atsi_count * sizeof (struct GNUNET_ATS_Information));
468 GNUNET_free (dest->atsi);
469 dest->atsi = tmp_atsi;
470 dest->atsi_count = dest->atsi_count + add_atsi_count;
474 if (delta_atsi_count > 0)
477 (*delta_dest) = GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
478 memcpy ((*delta_dest), delta_atsi, delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
479 (*delta_count) = delta_atsi_count;
486 * Free the given address
488 * @param addr address to destroy
491 free_address (struct ATS_Address *addr)
493 GNUNET_free (addr->plugin);
494 GNUNET_free_non_null (addr->atsi);
499 * Create a ATS_address with the given information
502 * @param plugin_name plugin
503 * @param plugin_addr address
504 * @param plugin_addr_len address length
505 * @param session_id session
506 * @return the ATS_Address
508 static struct ATS_Address *
509 create_address (const struct GNUNET_PeerIdentity *peer,
510 const char *plugin_name,
511 const void *plugin_addr, size_t plugin_addr_len,
514 struct ATS_Address *aa = NULL;
516 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
518 aa->addr_len = plugin_addr_len;
520 memcpy (&aa[1], plugin_addr, plugin_addr_len);
521 aa->plugin = GNUNET_strdup (plugin_name);
522 aa->session_id = session_id;
523 aa->active = GNUNET_NO;
524 aa->used = GNUNET_NO;
525 aa->solver_information = NULL;
528 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init(0);
529 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(0);
535 * Destroy the given address.
537 * @param handle the address handle
538 * @param addr address to destroy
539 * @return GNUNET_YES if bandwidth allocations should be recalcualted
542 destroy_address (struct GAS_Addresses_Handle *handle, struct ATS_Address *addr)
547 GNUNET_assert (GNUNET_YES ==
548 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
549 &addr->peer.hashPubKey,
556 struct CompareAddressContext
558 const struct ATS_Address *search;
560 /* exact_address != NULL if address and session is equal */
561 struct ATS_Address *exact_address;
562 /* exact_address != NULL if address and session is 0 */
563 struct ATS_Address *base_address;
569 * @param cls a CompareAddressContext containin the source address
571 * @param value the address to compare with
572 * @return GNUNET_YES to continue, GNUNET_NO if address is founce
576 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
578 struct CompareAddressContext *cac = cls;
579 struct ATS_Address *aa = value;
581 /* Find an matching exact address:
584 * aa->addr_len == cac->search->addr_len
585 * aa->plugin == cac->search->plugin
586 * aa->addr == cac->search->addr
587 * aa->session == cac->search->session
589 * return as exact address
591 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
593 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
594 cac->exact_address = aa;
597 /* Find an matching base address:
601 * aa->session_id == 0
604 * aa->addr_len == cac->search->addr_len
605 * aa->plugin == cac->search->plugin
606 * aa->addr == cac->search->addr
608 * return as base address
610 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
612 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
613 cac->base_address = aa;
616 /* Find an matching exact address based on session:
620 * cac->search->addr_len == 0
623 * aa->plugin == cac->search->plugin
624 * aa->session_id == cac->search->session_id
626 * return as exact address
628 if (0 == cac->search->addr_len)
630 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
631 cac->exact_address = aa;
634 if (cac->exact_address == NULL)
635 return GNUNET_YES; /* Continue iteration to find exact address */
637 return GNUNET_NO; /* Stop iteration since we have an exact address */
642 * Find an existing equivalent address record.
643 * Compares by peer identity and network address OR by session ID
644 * (one of the two must match).
646 * @param handle the address handle
647 * @param peer peer to lookup addresses for
648 * @param addr existing address record
649 * @return existing address record, NULL for none
652 find_equivalent_address (struct GAS_Addresses_Handle *handle,
653 const struct GNUNET_PeerIdentity *peer,
654 const struct ATS_Address *addr)
656 struct CompareAddressContext cac;
658 cac.exact_address = NULL;
659 cac.base_address = NULL;
661 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
662 &compare_address_it, &cac);
664 if (cac.exact_address == NULL)
665 return cac.base_address;
666 return cac.exact_address;
671 * Lookup an ATS address by the address properties and session or return an
672 * equivalent address with a session == 0
674 * @param handle the address handle to use
676 * @param plugin_name transport plugin name
677 * @param plugin_addr plugin address
678 * @param plugin_addr_len length of the plugin address
679 * @param session_id session id, can be 0
680 * @param atsi performance information for this address
681 * @param atsi_count number of performance information contained
682 * @return an ATS_address or NULL
685 static struct ATS_Address *
686 lookup_address (struct GAS_Addresses_Handle *handle,
687 const struct GNUNET_PeerIdentity *peer,
688 const char *plugin_name,
689 const void *plugin_addr,
690 size_t plugin_addr_len,
692 const struct GNUNET_ATS_Information *atsi,
695 struct ATS_Address *aa;
696 struct ATS_Address *ea;
698 aa = create_address (peer,
700 plugin_addr, plugin_addr_len,
703 /* Get existing address or address with session == 0 */
704 ea = find_equivalent_address (handle, peer, aa);
710 else if (ea->session_id != session_id)
718 * Extract an ATS performance info from an address
720 * @param address the address
721 * @param type the type to extract in HBO
722 * @return the value in HBO or GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
725 get_performance_info (struct ATS_Address *address, uint32_t type)
728 GNUNET_assert (NULL != address);
730 if ((NULL == address->atsi) || (0 == address->atsi_count))
731 return GNUNET_ATS_VALUE_UNDEFINED;
733 for (c1 = 0; c1 < address->atsi_count; c1++)
735 if (ntohl(address->atsi[c1].type) == type)
736 return ntohl(address->atsi[c1].value);
738 return GNUNET_ATS_VALUE_UNDEFINED;
743 * Add a new address for a peer.
745 * @param handle the address handle to use
747 * @param plugin_name transport plugin name
748 * @param plugin_addr plugin address
749 * @param plugin_addr_len length of the plugin address
750 * @param session_id session id, can be 0
751 * @param atsi performance information for this address
752 * @param atsi_count number of performance information contained
755 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
756 const struct GNUNET_PeerIdentity *peer,
757 const char *plugin_name, const void *plugin_addr,
758 size_t plugin_addr_len, uint32_t session_id,
759 const struct GNUNET_ATS_Information *atsi,
762 struct ATS_Address *aa;
763 struct ATS_Address *ea;
764 struct GNUNET_ATS_Information *atsi_delta;
765 uint32_t atsi_delta_count;
769 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
770 "Received `%s' for peer `%s'\n",
774 if (GNUNET_NO == handle->running)
777 GNUNET_assert (NULL != handle->addresses);
779 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
782 disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta, &atsi_delta_count);
783 GNUNET_free_non_null (atsi_delta);
784 addr_net = get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE);
785 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
786 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
788 /* Get existing address or address with session == 0 */
789 ea = find_equivalent_address (handle, peer, aa);
792 /* We have a new address */
793 GNUNET_assert (GNUNET_OK ==
794 GNUNET_CONTAINER_multihashmap_put (handle->addresses,
795 &peer->hashPubKey, aa,
796 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Added new address for peer `%s' session id %u, %p\n",
798 GNUNET_i2s (peer), session_id, aa);
799 /* Tell solver about new address */
800 handle->s_add (handle->solver, handle->addresses, aa, addr_net);
801 /* Notify performance clients about new address */
802 GAS_performance_notify_all_clients (&aa->peer,
804 aa->addr, aa->addr_len,
806 aa->atsi, aa->atsi_count,
812 GNUNET_free (aa->plugin);
813 GNUNET_free_non_null (aa->atsi);
817 if (ea->session_id != 0)
819 /* This address with the same session is already existing
820 * Should not happen */
821 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
822 "Added already existing address for peer `%s' `%s' %p with new session %u\n",
823 GNUNET_i2s (peer), plugin_name, session_id);
828 /* We have an address without an session, update this address */
830 atsi_delta_count = 0;
831 if (GNUNET_YES == disassemble_ats_information (ea, atsi, atsi_count, &atsi_delta, &atsi_delta_count))
833 GAS_performance_notify_all_clients (&ea->peer,
835 ea->addr, ea->addr_len,
837 ea->atsi, ea->atsi_count,
842 /* Notify solver about update with atsi information and session */
843 handle->s_update (handle->solver, handle->addresses, ea, session_id, ea->used, atsi_delta, atsi_delta_count);
844 GNUNET_free_non_null (atsi_delta);
847 ea->session_id = session_id;
848 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
849 "Updated existing address for peer `%s' %p with new session %u\n",
850 GNUNET_i2s (peer), ea, session_id);
855 * Update an address with a session or performance information for a peer.
857 * If an address was added without a session it will be updated with the
860 * @param handle the address handle to use
862 * @param plugin_name transport plugin name
863 * @param plugin_addr plugin address
864 * @param plugin_addr_len length of the plugin address
865 * @param session_id session id, can be 0
866 * @param atsi performance information for this address
867 * @param atsi_count number of performance information contained
870 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
871 const struct GNUNET_PeerIdentity *peer,
872 const char *plugin_name, const void *plugin_addr,
873 size_t plugin_addr_len, uint32_t session_id,
874 const struct GNUNET_ATS_Information *atsi,
877 struct ATS_Address *aa;
878 struct GNUNET_ATS_Information *atsi_delta;
879 uint32_t atsi_delta_count;
880 uint32_t prev_session;
882 if (GNUNET_NO == handle->running)
885 GNUNET_assert (NULL != handle->addresses);
887 /* Get existing address */
888 aa = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
889 session_id, atsi, atsi_count);
892 /* GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n", */
893 /* GNUNET_i2s (peer), plugin_name, session_id); */
894 /* GNUNET_break (0); */
898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
899 "Received `%s' for peer `%s' address \n",
901 GNUNET_i2s (peer), aa);
905 atsi_delta_count = 0;
906 if (GNUNET_YES == disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta, &atsi_delta_count))
908 /* Notify performance clients about updated address */
909 GAS_performance_notify_all_clients (&aa->peer,
911 aa->addr, aa->addr_len,
913 aa->atsi, aa->atsi_count,
917 prev_session = aa->session_id;
918 aa->session_id = session_id;
921 /* Tell solver about update */
922 handle->s_update (handle->solver, handle->addresses, aa, prev_session, aa->used, atsi_delta, atsi_delta_count);
923 GNUNET_free_non_null (atsi_delta);
927 struct DestroyContext
929 struct ATS_Address *aa;
931 struct GAS_Addresses_Handle *handle;
934 * GNUNET_NO : full address
935 * GNUNET_YES : just session
944 * If session != 0, just the session is deleted, the address itself still exists
945 * If session == 0, remove full address
946 * If session == 0 and addrlen == 0, destroy inbound address
950 * @param value the 'struct ATS_Address'
951 * @return GNUNET_OK (continue to iterate)
954 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
956 struct DestroyContext *dc = cls;
957 struct GAS_Addresses_Handle *handle = dc->handle;
958 const struct ATS_Address *des = dc->aa;
959 struct ATS_Address *aa = value;
961 GNUNET_assert (0 == memcmp (&aa->peer, &des->peer,
962 sizeof (struct GNUNET_PeerIdentity)));
965 if (des->session_id == 0)
967 /* Session == 0, remove full address */
968 if ((0 == strcmp (des->plugin, aa->plugin)) &&
969 (aa->addr_len == des->addr_len) &&
970 (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
973 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
974 "Deleting full address for peer `%s' session %u %p\n",
975 GNUNET_i2s (&aa->peer), aa->session_id, aa);
977 /* Notify solver about deletion */
978 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
979 destroy_address (handle, aa);
980 dc->result = GNUNET_NO;
981 return GNUNET_OK; /* Continue iteration */
986 /* Session != 0, just remove session */
987 if (aa->session_id != des->session_id)
988 return GNUNET_OK; /* irrelevant */
990 if ((aa->session_id != 0) &&
991 (0 != strcmp (des->plugin, aa->plugin)))
993 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
994 "Different plugins during removal: `%s' vs `%s' \n",
995 des->plugin, aa->plugin);
1000 if (aa->addr_len == 0)
1002 /* Inbound connection died, delete full address */
1003 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1004 "Deleting inbound address for peer `%s': `%s' session %u\n",
1005 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1007 /* Notify solver about deletion */
1008 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
1009 destroy_address (handle, aa);
1010 dc->result = GNUNET_NO;
1011 return GNUNET_OK; /* Continue iteration */
1016 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1017 "Deleting session for peer `%s': `%s' %u\n",
1018 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1019 /* Notify solver to delete session */
1020 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_YES);
1030 * Remove an address or just a session for a peer.
1032 * @param handle the address handle to use
1034 * @param plugin_name transport plugin name
1035 * @param plugin_addr plugin address
1036 * @param plugin_addr_len length of the plugin address
1037 * @param session_id session id, can be 0
1040 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1041 const struct GNUNET_PeerIdentity *peer,
1042 const char *plugin_name,
1043 const void *plugin_addr,
1044 size_t plugin_addr_len,
1045 uint32_t session_id)
1047 struct ATS_Address *ea;
1048 struct DestroyContext dc;
1050 if (GNUNET_NO == handle->running)
1053 /* Get existing address */
1054 ea = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
1055 session_id, NULL, 0);
1057 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1058 "Received `%s' for peer `%s' address %p session %u\n",
1060 GNUNET_i2s (peer), ea, session_id);
1064 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1065 GNUNET_i2s (peer), plugin_name, session_id);
1069 GNUNET_break (0 < strlen (plugin_name));
1071 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
1073 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
1074 &destroy_by_session_id, &dc);
1075 free_address (dc.aa);
1080 * Notification about active use of an address.
1081 * in_use == GNUNET_YES:
1082 * This address is used to maintain an active connection with a peer.
1083 * in_use == GNUNET_NO:
1084 * This address is no longer used to maintain an active connection with a peer.
1086 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1089 * @param handle the address handle to use
1091 * @param plugin_name transport plugin name
1092 * @param plugin_addr plugin address
1093 * @param plugin_addr_len length of the plugin address
1094 * @param session_id session id, can be 0
1095 * @param in_use GNUNET_YES if GNUNET_NO
1096 * @return GNUNET_SYSERR on failure (address unknown ...)
1099 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1100 const struct GNUNET_PeerIdentity *peer,
1101 const char *plugin_name,
1102 const void *plugin_addr,
1103 size_t plugin_addr_len,
1104 uint32_t session_id,
1107 struct ATS_Address *ea;
1110 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1111 "Received `%s' for peer `%s'\n",
1115 if (GNUNET_NO == handle->running)
1116 return GNUNET_SYSERR;
1118 ea = lookup_address (handle, peer, plugin_name,
1119 plugin_addr, plugin_addr_len,
1120 session_id, NULL, 0);
1123 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1124 "Trying to set unknown address `%s', %s %u %s \n",
1126 plugin_name, session_id,
1127 (GNUNET_NO == in_use) ? "NO" : "YES");
1129 return GNUNET_SYSERR;
1131 if (ea->used == in_use)
1134 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1135 "Address in use called multiple times for peer `%s': %s -> %s \n",
1137 (GNUNET_NO == ea->used) ? "NO" : "YES",
1138 (GNUNET_NO == in_use) ? "NO" : "YES");
1139 return GNUNET_SYSERR;
1142 /* Tell solver about update */
1143 prev_inuse = ea->used;
1145 handle->s_update (handle->solver, handle->addresses, ea, session_id, prev_inuse, NULL, 0);
1153 * Cancel address suggestions for a peer
1155 * @param handle the address handle
1156 * @param peer the peer id
1159 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1160 const struct GNUNET_PeerIdentity *peer)
1162 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1164 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1165 "Received request: `%s' for peer %s\n", "request_address_cancel", GNUNET_i2s (peer));
1169 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1176 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1177 "No address requests pending for peer `%s', cannot remove!\n", GNUNET_i2s (peer));
1180 handle->s_get_stop (handle->solver, handle->addresses, peer);
1181 GAS_addresses_handle_backoff_reset (handle, peer);
1182 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1183 "Removed request pending for peer `%s\n", GNUNET_i2s (peer));
1184 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1190 * Request address suggestions for a peer
1192 * @param handle the address handle
1193 * @param peer the peer id
1196 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1197 const struct GNUNET_PeerIdentity *peer)
1199 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1200 struct ATS_Address *aa;
1202 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1203 "Received `%s' for peer `%s'\n",
1207 if (GNUNET_NO == handle->running)
1211 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1212 break; /* already suggesting */
1217 cur = GNUNET_malloc (sizeof (struct GAS_Addresses_Suggestion_Requests));
1219 GNUNET_CONTAINER_DLL_insert (handle->r_head, handle->r_tail, cur);
1222 /* Get prefered address from solver */
1223 aa = (struct ATS_Address *) handle->s_get (handle->solver, handle->addresses, peer);
1226 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1227 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
1231 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1232 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
1234 GAS_scheduling_transmit_address_suggestion (peer,
1236 aa->addr, aa->addr_len,
1238 aa->atsi, aa->atsi_count,
1239 aa->assigned_bw_out,
1240 aa->assigned_bw_in);
1242 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
1243 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get(), aa->block_interval);
1245 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1246 "Address %p ready for suggestion, block interval now %llu \n",
1247 aa, aa->block_interval);
1252 * Iterator to reset address blocking
1254 * @param cls not used
1255 * @param key the peer
1256 * @param value the address to reset
1257 * @return GNUNET_OK to continue
1260 reset_address_it (void *cls, const struct GNUNET_HashCode *key, void *value)
1262 struct ATS_Address *aa = value;
1264 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1265 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1266 GNUNET_i2s (&aa->peer), aa, aa->block_interval);
1268 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1269 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1275 * Reset suggestion backoff for a peer
1277 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1278 * reset using this function
1280 * @param handle the address handle
1281 * @param peer the peer id
1284 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1285 const struct GNUNET_PeerIdentity *peer)
1287 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1288 "Received `%s' for peer `%s'\n",
1292 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses,
1299 normalized_preference_changed_cb (const struct GNUNET_PeerIdentity *peer,
1300 enum GNUNET_ATS_PreferenceKind kind,
1308 * Change the preference for a peer
1310 * @param handle the address handle
1311 * @param client the client sending this request
1312 * @param peer the peer id
1313 * @param kind the preference kind to change
1314 * @param score the new preference score
1317 GAS_addresses_change_preference (struct GAS_Addresses_Handle *handle,
1319 const struct GNUNET_PeerIdentity *peer,
1320 enum GNUNET_ATS_PreferenceKind kind,
1324 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1325 "Received `%s' for peer `%s' for client %p\n",
1326 "CHANGE PREFERENCE",
1327 GNUNET_i2s (peer), client);
1329 if (GNUNET_NO == handle->running)
1332 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->addresses,
1335 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1336 "Received `%s' for unknown peer `%s' from client %p\n",
1337 "CHANGE PREFERENCE",
1338 GNUNET_i2s (peer), client);
1341 pref_rel = GAS_normalization_change_preference (client, peer, kind, score_abs);
1342 /* Tell solver about update */
1343 handle->s_pref (handle->solver, client, peer, kind, pref_rel);
1348 * Load quotas for networks from configuration
1350 * @param cfg configuration handle
1351 * @param out_dest where to write outbound quotas
1352 * @param in_dest where to write inbound quotas
1353 * @param dest_length length of inbound and outbound arrays
1354 * @return number of networks loaded
1357 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1359 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1360 char * entry_in = NULL;
1361 char * entry_out = NULL;
1362 char * quota_out_str;
1363 char * quota_in_str;
1367 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1371 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1372 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1375 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
1378 if (0 == strcmp(quota_out_str, GNUNET_ATS_MaxBandwidthString))
1380 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1383 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, &out_dest[c])))
1385 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out, &out_dest[c])))
1388 if (GNUNET_NO == res)
1390 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1391 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1392 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1396 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Outbound quota configure for network `%s' is %llu\n"),
1397 network_str[c], out_dest[c]);
1399 GNUNET_free (quota_out_str);
1403 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1404 network_str[c], GNUNET_ATS_DefaultBandwidth);
1405 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1409 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
1412 if (0 == strcmp(quota_in_str, GNUNET_ATS_MaxBandwidthString))
1414 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1417 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1419 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in, &in_dest[c])))
1422 if (GNUNET_NO == res)
1424 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1425 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
1426 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1430 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Inbound quota configured for network `%s' is %llu\n"),
1431 network_str[c], in_dest[c]);
1433 GNUNET_free (quota_in_str);
1437 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1438 network_str[c], GNUNET_ATS_DefaultBandwidth);
1439 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1441 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loaded quota for network `%s' (in/out): %llu %llu\n", network_str[c], in_dest[c], out_dest[c]);
1442 GNUNET_free (entry_out);
1443 GNUNET_free (entry_in);
1445 return GNUNET_ATS_NetworkTypeCount;
1450 * Callback for solver to notify about assignment changes
1452 * @param cls the GAS_Addresses_Handle
1453 * @param address the address with changes
1456 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1458 struct GAS_Addresses_Handle *handle = cls;
1459 struct GAS_Addresses_Suggestion_Requests *cur;
1461 GNUNET_assert (handle != NULL);
1462 GNUNET_assert (address != NULL);
1464 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Bandwidth assignment changed for peer %s \n", GNUNET_i2s(&address->peer));
1466 /* Notify performance clients about changes to address */
1467 GAS_performance_notify_all_clients (&address->peer,
1469 address->addr, address->addr_len,
1470 address->session_id,
1471 address->atsi, address->atsi_count,
1472 address->assigned_bw_out,
1473 address->assigned_bw_in);
1474 cur = handle->r_head;
1477 if (0 == memcmp (&address->peer, &cur->id, sizeof (cur->id)))
1478 break; /* we have an address request pending*/
1483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1484 "Nobody is interested in peer `%s' :(\n",GNUNET_i2s (&address->peer));
1488 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1489 "Sending bandwidth update for peer `%s'\n",GNUNET_i2s (&address->peer));
1491 /* *Notify scheduling clients about suggestion */
1492 GAS_scheduling_transmit_address_suggestion (&address->peer,
1494 address->addr, address->addr_len,
1495 address->session_id,
1496 address->atsi, address->atsi_count,
1497 address->assigned_bw_out,
1498 address->assigned_bw_in);
1503 * Initialize address subsystem. The addresses subsystem manages the addresses
1504 * known and current performance information. It has a solver component
1505 * responsible for the resource allocation. It tells the solver about changes
1506 * and receives updates when the solver changes the ressource allocation.
1508 * @param cfg configuration to use
1509 * @param stats the statistics handle to use
1510 * @return an address handle
1512 struct GAS_Addresses_Handle *
1513 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1514 const struct GNUNET_STATISTICS_Handle *stats)
1516 struct GAS_Addresses_Handle *ah;
1517 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1518 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1519 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1524 ah = GNUNET_malloc (sizeof (struct GAS_Addresses_Handle));
1525 ah->running = GNUNET_NO;
1527 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1528 /* Initialize the addresses database */
1529 ah->addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1530 GNUNET_assert (NULL != ah->addresses);
1532 /* Figure out configured solution method */
1533 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1535 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1536 ah->ats_mode = MODE_SIMPLISTIC;
1540 for (c = 0; c < strlen (mode_str); c++)
1541 mode_str[c] = toupper (mode_str[c]);
1542 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1544 ah->ats_mode = MODE_SIMPLISTIC;
1546 else if (0 == strcmp (mode_str, "MLP"))
1548 ah->ats_mode = MODE_MLP;
1550 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1551 ah->ats_mode = MODE_SIMPLISTIC;
1556 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1557 ah->ats_mode = MODE_SIMPLISTIC;
1559 GNUNET_free (mode_str);
1561 /* Start configured solution method */
1562 switch (ah->ats_mode)
1565 /* Init the MLP solver with default values */
1567 ah->ats_mode = MODE_MLP;
1568 ah->s_init = &GAS_mlp_init;
1569 ah->s_add = &GAS_mlp_address_add;
1570 ah->s_update = &GAS_mlp_address_update;
1571 ah->s_get = &GAS_mlp_get_preferred_address;
1572 ah->s_get_stop = &GAS_mlp_stop_get_preferred_address;
1573 ah->s_pref = &GAS_mlp_address_change_preference;
1574 ah->s_del = &GAS_mlp_address_delete;
1575 ah->s_done = &GAS_mlp_done;
1581 case MODE_SIMPLISTIC:
1582 /* Init the simplistic solver with default values */
1583 ah->ats_mode = MODE_SIMPLISTIC;
1584 ah->s_init = &GAS_proportional_init;
1585 ah->s_add = &GAS_proportional_address_add;
1586 ah->s_update = &GAS_proportional_address_update;
1587 ah->s_get = &GAS_proportional_get_preferred_address;
1588 ah->s_get_stop = &GAS_proportional_stop_get_preferred_address;
1589 ah->s_pref = &GAS_proportional_address_change_preference;
1590 ah->s_del = &GAS_proportional_address_delete;
1591 ah->s_done = &GAS_proportional_done;
1592 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1599 GNUNET_assert (NULL != ah->s_init);
1600 GNUNET_assert (NULL != ah->s_add);
1601 GNUNET_assert (NULL != ah->s_update);
1602 GNUNET_assert (NULL != ah->s_get);
1603 GNUNET_assert (NULL != ah->s_get_stop);
1604 GNUNET_assert (NULL != ah->s_pref);
1605 GNUNET_assert (NULL != ah->s_del);
1606 GNUNET_assert (NULL != ah->s_done);
1608 GAS_normalization_start (&normalized_preference_changed_cb);
1609 quota_count = load_quotas(cfg, quotas_in, quotas_out, GNUNET_ATS_NetworkTypeCount);
1611 ah->solver = ah->s_init (cfg, stats, quotas, quotas_in, quotas_out, quota_count, &bandwidth_changed_cb, ah);
1612 if (NULL == ah->solver)
1614 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize solver!\n");
1619 /* up and running */
1620 ah->running = GNUNET_YES;
1626 * Free memory of address.
1629 * @param key peer identity (unused)
1630 * @param value the 'struct ATS_Address' to free
1631 * @return GNUNET_OK (continue to iterate)
1634 free_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1636 struct GAS_Addresses_Handle *handle = cls;
1637 struct ATS_Address *aa = value;
1638 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
1639 destroy_address (handle, aa);
1645 * Remove all addresses
1647 * @param handle the address handle to use
1650 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
1652 if (GNUNET_NO == handle->running)
1655 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1659 if (handle->addresses != NULL)
1660 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &free_address_it, handle);
1665 * Shutdown address subsystem.
1667 * @param handle the address handle to shutdown
1670 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
1672 struct GAS_Addresses_Suggestion_Requests *cur;
1674 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1675 "Shutting down addresses\n");
1676 GNUNET_assert (NULL != handle);
1677 GAS_addresses_destroy_all (handle);
1678 handle->running = GNUNET_NO;
1679 GNUNET_CONTAINER_multihashmap_destroy (handle->addresses);
1680 handle->addresses = NULL;
1681 while (NULL != (cur = handle->r_head))
1683 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1686 handle->s_done (handle->solver);
1687 GNUNET_free (handle);
1688 /* Stop configured solution method */
1689 GAS_normalization_stop ();
1693 struct PeerIteratorContext
1695 GNUNET_ATS_Peer_Iterator it;
1697 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1702 * Iterator to iterate over all peers
1704 * @param cls a PeerIteratorContext
1705 * @param key the peer id
1706 * @param value the ATS_address
1707 * @return GNUNET_OK to continue
1711 const struct GNUNET_HashCode * key,
1714 struct PeerIteratorContext *ip_ctx = cls;
1715 struct GNUNET_PeerIdentity tmp;
1717 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1719 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1720 tmp.hashPubKey = (*key);
1721 ip_ctx->it (ip_ctx->it_cls, &tmp);
1729 * Return information all peers currently known to ATS
1731 * @param handle the address handle to use
1732 * @param p_it the iterator to call for every peer
1733 * @param p_it_cls the closure for the iterator
1736 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
1737 GNUNET_ATS_Peer_Iterator p_it,
1740 struct PeerIteratorContext ip_ctx;
1745 GNUNET_assert (NULL != handle->addresses);
1747 size = GNUNET_CONTAINER_multihashmap_size(handle->addresses);
1751 ip_ctx.it_cls = p_it_cls;
1752 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1753 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &peer_it, &ip_ctx);
1754 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1756 p_it (p_it_cls, NULL);
1760 struct PeerInfoIteratorContext
1762 GNUNET_ATS_PeerInfo_Iterator it;
1768 * Iterator to iterate over a peer's addresses
1770 * @param cls a PeerInfoIteratorContext
1771 * @param key the peer id
1772 * @param value the ATS_address
1773 * @return GNUNET_OK to continue
1776 peerinfo_it (void *cls,
1777 const struct GNUNET_HashCode * key,
1780 struct PeerInfoIteratorContext *pi_ctx = cls;
1781 struct ATS_Address *addr = (struct ATS_Address *) value;
1783 if (NULL != pi_ctx->it)
1785 pi_ctx->it (pi_ctx->it_cls,
1788 addr->addr, addr->addr_len,
1790 addr->atsi, addr->atsi_count,
1791 addr->assigned_bw_out,
1792 addr->assigned_bw_in);
1799 * Return information all peers currently known to ATS
1801 * @param handle the address handle to use
1802 * @param peer the respective peer
1803 * @param pi_it the iterator to call for every peer
1804 * @param pi_it_cls the closure for the iterator
1807 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
1808 const struct GNUNET_PeerIdentity *peer,
1809 GNUNET_ATS_PeerInfo_Iterator pi_it,
1812 struct PeerInfoIteratorContext pi_ctx;
1813 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1814 GNUNET_assert (NULL != peer);
1815 GNUNET_assert (NULL != handle->addresses);
1817 return; /* does not make sense without callback */
1819 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1821 pi_ctx.it_cls = pi_it_cls;
1823 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1826 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1831 /* end of gnunet-service-ats_addresses.c */