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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_performance.h"
32 #include "gnunet-service-ats_scheduling.h"
33 #include "gnunet-service-ats_reservations.h"
35 #include "gnunet-service-ats_addresses_mlp.h"
37 #include "gnunet-service-ats_addresses_simplistic.h"
40 * NOTE: Do not change this documentation. This documentation is based on
41 * gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
42 * use build_txt.sh to generate plaintext output
44 * 1 ATS addresses : ATS address management
46 * This ATS addresses ("addresses") component manages the addresses known to
47 * ATS service and suggests addresses to transport service when it is
48 * interested in address suggestion for a peer. ATS addresses also
49 * instantiates the bandwidth assignment mechanism (solver), notifies it
50 * about changes to addresses and forwards changes to bandwidth assignments
51 * to transport, depending if transport is interested in this change.
57 * Addresses are added by specifying peer ID, plugin, address, address length
58 * and session, if available. ATS information can be specified if available.
62 * ATS specifies a fix set of networks an address can belong to. For each
63 * network an inbound and outbound quota will be specified. The available
64 * networks and addtional helper varaibles are defined in
65 * gnunet_ats_service.h. At the moment 5 networks are defined:
66 * * GNUNET_ATS_NET_UNSPECIFIED
67 * * GNUNET_ATS_NET_LOOPBACK
68 * * GNUNET_ATS_NET_LAN
69 * * GNUNET_ATS_NET_WAN
70 * * GNUNET_ATS_NET_WLAN
72 * The total number of networks defined is stored in
73 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
74 * initializer for an int array, while GNUNET_ATS_NetworkType is an
75 * initializer for a char array containing a string description of all
80 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
81 * is loaded from ats configuration during initialization. This quota defines
82 * to total amount of inbound and outbound traffic allowed for a specific
83 * network. The configuration values used are in section ats:
84 * * "NETWORK"_QUOTA_IN = <value>
85 * * "NETWORK"_QUOTA_IN = <value>
87 * You can specify quotas by setting the <value> to a:
88 * * unrestricted: unlimited
89 * * number of bytes: e.g. 10240
90 * * fancy value: e.g. 64 Kib
92 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
93 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
95 * * GNUNET_ATS_DefaultBandwidth: 65536
96 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
97 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
99 * Details of loading quotas and default values will be described on
101 * 1.1.4 Preference values
103 * 1.2 Data structures used
105 * Addresse uses struct ATS_Address for each address. The structs are stored
106 * in a linked list and provides a pointer void *solver_information for the
107 * solver to store address specific information. It provides the int values
108 * active which is set to GNUNET_YES if the address is select for transport
109 * use and used, representing that transport service is actively using this
110 * address. Address information are stored in peer, addr, addr_len, plugin.
114 * During initialization a hashmap to store addresses is created. The quotas
115 * for all networks defined for ATS are loaded from configuration. For each
116 * network first the logic will check if the string
117 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
118 * the configured value as a fancy size and if this fails it will try to use
119 * it as a value_number. If no configuration value is found it will assign
120 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
121 * configured solver using configuration "[ats]:MODE". Current solvers are
122 * MODE_SIMPLISTIC, MODE_MLP. Interaction is done using a solver API
127 * * s_init: init the solver with required information
128 * * s_add: add a new address
129 * * s_update: update ATS values or session for an address
130 * * s_get: get prefered address for a peer
131 * * s_del: delete an address
132 * * s_pref: change preference value for a peer
133 * * s_done: shutdown solver
135 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
136 * solver which is called when bandwidth assigned to peer has changed
140 * During shutdown all addresses are freed and the solver told to shutdown
142 * 1.6 Addresses and sessions
144 * Addresses consist of the address itself and a numerical session. When a
145 * new address without a session is added it has no session, so it gets
146 * session 0 assigned. When an address with a session is added and an address
147 * object with session 0 is found, this object is updated with the session
148 * otherwise a new address object with this session assigned is created.
152 * Addresses a1,a2 with session s1, s2 are "exact" if:
153 * (a1 == a2)&&(s1 == s2)
154 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
155 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
157 * 1.7 Address management
159 * Transport service notifies ATS about changes to the addresses known to
162 * 1.7.1 Adding an address
164 * When transport learns a new address it tells ATS and ATS is telling
165 * addresses about it using GAS_address_add. If not known to addresses it
166 * creates a new address object and calls solver's s_add. ATS information are
167 * deserialized and solver is notified about the session and ATS information
170 * 1.7.2 Updating an address
172 * Addresses does an lookup up for the existing address with the given
173 * session. If disassembles included ATS information and notifies the solver
174 * using s_update about the update.
176 * 1.7.3 Deleting an address
178 * Addresses does an lookup for the exact address and session and if removes
179 * this address. If session != 0 the session is set to 0 and the address is
180 * kept. If session == 0, the addresses is removed.
182 * 1.7.4 Requesting an address suggestion
184 * The address client issues a request address message to be notified about
185 * address suggestions for a specific peer. Addresses asks the solver with
186 * s_get. If no address is available, it will not send a response, otherwise
187 * it will respond with the choosen address.
189 * 1.7.5 Address suggestions
191 * Addresses will notify the client automatically on any bandwidth_changed_cb
192 * by the solver if a address suggestion request is pending. If no address is
193 * available it will not respond at all If the client is not interested
194 * anymore, it has to cancel the address suggestion request.
196 * 1.7.6 Suggestions blocks and reset
198 * After suggesting an address it is blocked for ATS_BLOCKING_DELTA sec. to
199 * prevent the client from being thrashed. If the client requires immediately
200 * it can reset this block using GAS_addresses_handle_backoff_reset.
202 * 1.7.7 Marking address in use
204 * The client can notify addresses that it successfully uses an address and
205 * wants this address to be kept by calling GSA_address_in_use. Adresses will
206 * mark the address as used an notify the solver about the use.
208 * 1.7.8 Address lifecycle
211 * * (updated address) || (address in use)
214 * 1.8 Bandwidth assignment
216 * The addresses are used to perform resource allocation operations. ATS
217 * addresses takes care of instantiating the solver configured and notifies
218 * the respective solver about address changes and receives changes to the
219 * bandwidth assignment from the solver. The current bandwidth assignment is
220 * sent to transport. The specific solvers will be described in the specific
223 * 1.9 Changing peer preferences
225 * The bandwidth assigned to a peer can be influenced by setting a preference
226 * for a peer. The prefernce will be given to to the solver with s_pref which
227 * has to take care of the preference value
233 * Available ressource assignment modes
240 * Assign each peer an equal amount of bandwidth (bw)
242 * bw_per_peer = bw_total / #active addresses
249 * Solve ressource assignment as an optimization problem
250 * Uses an mixed integer programming solver
257 * Pending Address suggestion requests
259 struct GAS_Addresses_Suggestion_Requests
264 struct GAS_Addresses_Suggestion_Requests *next;
269 struct GAS_Addresses_Suggestion_Requests *prev;
274 struct GNUNET_PeerIdentity id;
279 * Handle for ATS address component
281 struct GAS_Addresses_Handle
286 struct GNUNET_STATISTICS_Handle *stat;
289 * A multihashmap to store all addresses
291 struct GNUNET_CONTAINER_MultiHashMap *addresses;
294 * Configure WAN quota in
296 unsigned long long wan_quota_in;
299 * Configure WAN quota out
301 unsigned long long wan_quota_out;
304 * Is ATS addresses running
309 * Configured ATS solver
319 * Address suggestion requests DLL head
321 struct GAS_Addresses_Suggestion_Requests *r_head;
324 * Address suggestion requests DLL tail
326 struct GAS_Addresses_Suggestion_Requests *r_tail;
328 /* Solver functions */
333 GAS_solver_init s_init;
336 * Add an address to the solver
338 GAS_solver_address_add s_add;
341 * Update address in solver
343 GAS_solver_address_update s_update;
346 * Get address from solver
348 GAS_solver_get_preferred_address s_get;
351 * Get address from solver
353 GAS_solver_stop_get_preferred_address s_get_stop;
356 * Delete address in solver
358 GAS_solver_address_delete s_del;
361 * Change preference for quality in solver
363 GAS_solver_address_change_preference s_pref;
368 GAS_solver_done s_done;
373 * Assemble ATS information from address
375 * @param aa source address
376 * @param dest destination
377 * @return number of elements
380 assemble_ats_information (const struct ATS_Address *aa, struct GNUNET_ATS_Information **dest)
382 unsigned int ats_count = GNUNET_ATS_PropertyCount - 1;
383 struct GNUNET_ATS_Information *ats;
385 ats = GNUNET_malloc (ats_count * sizeof (struct GNUNET_ATS_Information));
388 ats[0].type = ntohl(GNUNET_ATS_UTILIZATION_UP);
389 ats[0].value = aa->atsp_utilization_out.value__;
390 ats[1].type = ntohl(GNUNET_ATS_UTILIZATION_DOWN);
391 ats[1].value = aa->atsp_utilization_in.value__;
392 ats[2].type = ntohl(GNUNET_ATS_NETWORK_TYPE);
393 ats[2].value = ntohl(aa->atsp_network_type);
394 ats[3].type = ntohl(GNUNET_ATS_QUALITY_NET_DELAY);
395 ats[3].value = ntohl(aa->atsp_latency.rel_value);
396 ats[4].type = ntohl(GNUNET_ATS_QUALITY_NET_DISTANCE);
397 ats[4].value = ntohl(aa->atsp_distance);
398 ats[5].type = ntohl(GNUNET_ATS_COST_WAN);
399 ats[5].value = ntohl (aa->atsp_cost_wan);
400 ats[6].type = ntohl(GNUNET_ATS_COST_LAN);
401 ats[6].value = ntohl (aa->atsp_cost_lan);
402 ats[7].type = ntohl(GNUNET_ATS_COST_WLAN);
403 ats[7].value = ntohl (aa->atsp_cost_wlan);
409 * Disassemble ATS information and update address
411 * @param src source ATS information
412 * @param ats_count number of ATS information
413 * @param dest destination address
414 * @return GNUNET_YES if address was address updated, GNUNET_NO otherwise
417 disassemble_ats_information (const struct GNUNET_ATS_Information *src,
419 struct ATS_Address *dest)
422 int change = GNUNET_NO;
424 for (i = 0; i < ats_count; i++)
425 switch (ntohl (src[i].type))
427 case GNUNET_ATS_UTILIZATION_UP:
428 if (dest->atsp_utilization_out.value__ != src[i].value)
430 dest->atsp_utilization_out.value__ = src[i].value;
433 case GNUNET_ATS_UTILIZATION_DOWN:
434 if (dest->atsp_utilization_in.value__ != src[i].value)
436 dest->atsp_utilization_in.value__ = src[i].value;
439 case GNUNET_ATS_QUALITY_NET_DELAY:
440 if (dest->atsp_latency.rel_value != src[i].value)
442 dest->atsp_latency.rel_value = ntohl (src[i].value);
445 case GNUNET_ATS_QUALITY_NET_DISTANCE:
446 if (dest->atsp_distance!= src[i].value)
448 dest->atsp_distance = ntohl (src[i].value);
451 case GNUNET_ATS_COST_WAN:
452 if (dest->atsp_cost_wan != src[i].value)
454 dest->atsp_cost_wan = ntohl (src[i].value);
457 case GNUNET_ATS_COST_LAN:
458 if (dest->atsp_cost_lan != src[i].value)
460 dest->atsp_cost_lan = ntohl (src[i].value);
463 case GNUNET_ATS_COST_WLAN:
464 if (dest->atsp_cost_wlan != src[i].value)
466 dest->atsp_cost_wlan = ntohl (src[i].value);
469 case GNUNET_ATS_NETWORK_TYPE:
470 if (dest->atsp_network_type != src[i].value)
472 dest->atsp_network_type = ntohl (src[i].value);
475 case GNUNET_ATS_ARRAY_TERMINATOR:
478 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
479 "Received unsupported ATS type %u\n", ntohl (src[i].type));
487 * Free the given address
489 * @param addr address to destroy
492 free_address (struct ATS_Address *addr)
494 GNUNET_free (addr->plugin);
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;
526 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init(0);
527 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(0);
533 * Destroy the given address.
535 * @param handle the address handle
536 * @param addr address to destroy
537 * @return GNUNET_YES if bandwidth allocations should be recalcualted
540 destroy_address (struct GAS_Addresses_Handle *handle, struct ATS_Address *addr)
545 GNUNET_assert (GNUNET_YES ==
546 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
547 &addr->peer.hashPubKey,
554 struct CompareAddressContext
556 const struct ATS_Address *search;
558 /* exact_address != NULL if address and session is equal */
559 struct ATS_Address *exact_address;
560 /* exact_address != NULL if address and session is 0 */
561 struct ATS_Address *base_address;
567 * @param cls a CompareAddressContext containin the source address
569 * @param value the address to compare with
570 * @return GNUNET_YES to continue, GNUNET_NO if address is founce
574 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
576 struct CompareAddressContext *cac = cls;
577 struct ATS_Address *aa = value;
579 /* Find an matching exact address:
582 * aa->addr_len == cac->search->addr_len
583 * aa->plugin == cac->search->plugin
584 * aa->addr == cac->search->addr
585 * aa->session == cac->search->session
587 * return as exact address
589 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
591 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
592 cac->exact_address = aa;
595 /* Find an matching base address:
599 * aa->session_id == 0
602 * aa->addr_len == cac->search->addr_len
603 * aa->plugin == cac->search->plugin
604 * aa->addr == cac->search->addr
606 * return as base address
608 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
610 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
611 cac->base_address = aa;
614 /* Find an matching exact address based on session:
618 * cac->search->addr_len == 0
621 * aa->plugin == cac->search->plugin
622 * aa->session_id == cac->search->session_id
624 * return as exact address
626 if (0 == cac->search->addr_len)
628 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
629 cac->exact_address = aa;
632 if (cac->exact_address == NULL)
633 return GNUNET_YES; /* Continue iteration to find exact address */
635 return GNUNET_NO; /* Stop iteration since we have an exact address */
640 * Find an existing equivalent address record.
641 * Compares by peer identity and network address OR by session ID
642 * (one of the two must match).
644 * @param handle the address handle
645 * @param peer peer to lookup addresses for
646 * @param addr existing address record
647 * @return existing address record, NULL for none
650 find_equivalent_address (struct GAS_Addresses_Handle *handle,
651 const struct GNUNET_PeerIdentity *peer,
652 const struct ATS_Address *addr)
654 struct CompareAddressContext cac;
656 cac.exact_address = NULL;
657 cac.base_address = NULL;
659 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
660 &compare_address_it, &cac);
662 if (cac.exact_address == NULL)
663 return cac.base_address;
664 return cac.exact_address;
669 * Lookup an ATS address by the address properties and session or return an
670 * equivalent address with a session == 0
672 * @param handle the address handle to use
674 * @param plugin_name transport plugin name
675 * @param plugin_addr plugin address
676 * @param plugin_addr_len length of the plugin address
677 * @param session_id session id, can be 0
678 * @param atsi performance information for this address
679 * @param atsi_count number of performance information contained
680 * @return an ATS_address or NULL
683 static struct ATS_Address *
684 lookup_address (struct GAS_Addresses_Handle *handle,
685 const struct GNUNET_PeerIdentity *peer,
686 const char *plugin_name,
687 const void *plugin_addr,
688 size_t plugin_addr_len,
690 const struct GNUNET_ATS_Information *atsi,
693 struct ATS_Address *aa;
694 struct ATS_Address *ea;
696 aa = create_address (peer,
698 plugin_addr, plugin_addr_len,
701 /* Get existing address or address with session == 0 */
702 ea = find_equivalent_address (handle, peer, aa);
708 else if (ea->session_id != session_id)
718 * Add a new address for a peer.
720 * @param handle the address handle to use
722 * @param plugin_name transport plugin name
723 * @param plugin_addr plugin address
724 * @param plugin_addr_len length of the plugin address
725 * @param session_id session id, can be 0
726 * @param atsi performance information for this address
727 * @param atsi_count number of performance information contained
730 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
731 const struct GNUNET_PeerIdentity *peer,
732 const char *plugin_name, const void *plugin_addr,
733 size_t plugin_addr_len, uint32_t session_id,
734 const struct GNUNET_ATS_Information *atsi,
737 struct ATS_Address *aa;
738 struct ATS_Address *ea;
739 struct GNUNET_ATS_Information *ats_new;
740 uint32_t ats_count_new;
741 unsigned int ats_res;
743 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
744 "Received `%s' for peer `%s'\n",
748 if (GNUNET_NO == handle->running)
751 GNUNET_assert (NULL != handle->addresses);
753 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
756 if (atsi_count != (ats_res = disassemble_ats_information(atsi, atsi_count, aa)))
758 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
759 "While adding address: had %u ATS elements to add, could only add %u\n",
760 atsi_count, ats_res);
763 /* Get existing address or address with session == 0 */
764 ea = find_equivalent_address (handle, peer, aa);
767 /* We have a new address */
768 GNUNET_assert (GNUNET_OK ==
769 GNUNET_CONTAINER_multihashmap_put (handle->addresses,
770 &peer->hashPubKey, aa,
771 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
772 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Added new address for peer `%s' session id %u, %p\n",
773 GNUNET_i2s (peer), session_id, aa);
774 /* Tell solver about new address */
775 handle->s_add (handle->solver, handle->addresses, aa);
776 /* Notify performance clients about new address */
777 ats_count_new = assemble_ats_information (aa, &ats_new);
778 GAS_performance_notify_all_clients (&aa->peer,
780 aa->addr, aa->addr_len,
782 ats_new, ats_count_new,
785 GNUNET_free (ats_new);
788 GNUNET_free (aa->plugin);
791 if (ea->session_id != 0)
793 /* This address with the same session is already existing
794 * Should not happen */
795 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
796 "Added already existing address for peer `%s' `%s' %p with new session %u\n",
797 GNUNET_i2s (peer), plugin_name, session_id);
802 /* We have an address without an session, update this address */
804 /* Notify solver about update with atsi information and session */
805 handle->s_update (handle->solver, handle->addresses, ea, session_id, ea->used, atsi, atsi_count);
808 ea->session_id = session_id;
809 if (GNUNET_YES == disassemble_ats_information(atsi, atsi_count, ea))
811 ats_count_new = assemble_ats_information (aa, &ats_new);
812 GAS_performance_notify_all_clients (&aa->peer,
814 aa->addr, aa->addr_len,
816 ats_new, ats_count_new,
819 GNUNET_free (ats_new);
821 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
822 "Updated existing address for peer `%s' %p with new session %u\n",
823 GNUNET_i2s (peer), ea, session_id);
828 * Update an address with a session or performance information for a peer.
830 * If an address was added without a session it will be updated with the
833 * @param handle the address handle to use
835 * @param plugin_name transport plugin name
836 * @param plugin_addr plugin address
837 * @param plugin_addr_len length of the plugin address
838 * @param session_id session id, can be 0
839 * @param atsi performance information for this address
840 * @param atsi_count number of performance information contained
843 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
844 const struct GNUNET_PeerIdentity *peer,
845 const char *plugin_name, const void *plugin_addr,
846 size_t plugin_addr_len, uint32_t session_id,
847 const struct GNUNET_ATS_Information *atsi,
850 struct ATS_Address *aa;
851 struct GNUNET_ATS_Information *ats_new;
852 uint32_t ats_count_new;
854 if (GNUNET_NO == handle->running)
857 GNUNET_assert (NULL != handle->addresses);
859 /* Get existing address */
860 aa = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
861 session_id, atsi, atsi_count);
864 /* GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n", */
865 /* GNUNET_i2s (peer), plugin_name, session_id); */
866 /* GNUNET_break (0); */
870 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
871 "Received `%s' for peer `%s' address \n",
873 GNUNET_i2s (peer), aa);
875 /* Tell solver about update */
876 handle->s_update (handle->solver, handle->addresses, aa, session_id, aa->used, atsi, atsi_count);
879 if (GNUNET_YES == disassemble_ats_information (atsi, atsi_count, aa))
881 ats_count_new = assemble_ats_information (aa, &ats_new);
882 /* Notify performance clients about updated address */
883 GAS_performance_notify_all_clients (&aa->peer,
885 aa->addr, aa->addr_len,
887 ats_new, ats_count_new,
890 GNUNET_free (ats_new);
895 struct DestroyContext
897 struct ATS_Address *aa;
899 struct GAS_Addresses_Handle *handle;
902 * GNUNET_NO : full address
903 * GNUNET_YES : just session
912 * If session != 0, just the session is deleted, the address itself still exists
913 * If session == 0, remove full address
914 * If session == 0 and addrlen == 0, destroy inbound address
918 * @param value the 'struct ATS_Address'
919 * @return GNUNET_OK (continue to iterate)
922 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
924 struct DestroyContext *dc = cls;
925 struct GAS_Addresses_Handle *handle = dc->handle;
926 const struct ATS_Address *des = dc->aa;
927 struct ATS_Address *aa = value;
929 GNUNET_assert (0 == memcmp (&aa->peer, &des->peer,
930 sizeof (struct GNUNET_PeerIdentity)));
933 if (des->session_id == 0)
935 /* Session == 0, remove full address */
936 if ((0 == strcmp (des->plugin, aa->plugin)) &&
937 (aa->addr_len == des->addr_len) &&
938 (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
941 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
942 "Deleting full address for peer `%s' session %u %p\n",
943 GNUNET_i2s (&aa->peer), aa->session_id, aa);
945 /* Notify solver about deletion */
946 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
947 destroy_address (handle, aa);
948 dc->result = GNUNET_NO;
949 return GNUNET_OK; /* Continue iteration */
954 /* Session != 0, just remove session */
955 if (aa->session_id != des->session_id)
956 return GNUNET_OK; /* irrelevant */
958 if ((aa->session_id != 0) &&
959 (0 != strcmp (des->plugin, aa->plugin)))
961 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
962 "Different plugins during removal: `%s' vs `%s' \n",
963 des->plugin, aa->plugin);
968 if (aa->addr_len == 0)
970 /* Inbound connection died, delete full address */
971 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
972 "Deleting inbound address for peer `%s': `%s' session %u\n",
973 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
975 /* Notify solver about deletion */
976 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
977 destroy_address (handle, aa);
978 dc->result = GNUNET_NO;
979 return GNUNET_OK; /* Continue iteration */
984 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
985 "Deleting session for peer `%s': `%s' %u\n",
986 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
987 /* Notify solver to delete session */
988 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_YES);
998 * Remove an address or just a session for a peer.
1000 * @param handle the address handle to use
1002 * @param plugin_name transport plugin name
1003 * @param plugin_addr plugin address
1004 * @param plugin_addr_len length of the plugin address
1005 * @param session_id session id, can be 0
1008 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1009 const struct GNUNET_PeerIdentity *peer,
1010 const char *plugin_name,
1011 const void *plugin_addr,
1012 size_t plugin_addr_len,
1013 uint32_t session_id)
1015 struct ATS_Address *ea;
1016 struct DestroyContext dc;
1018 if (GNUNET_NO == handle->running)
1021 /* Get existing address */
1022 ea = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
1023 session_id, NULL, 0);
1025 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1026 "Received `%s' for peer `%s' address %p session %u\n",
1028 GNUNET_i2s (peer), ea, session_id);
1032 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1033 GNUNET_i2s (peer), plugin_name, session_id);
1037 GNUNET_break (0 < strlen (plugin_name));
1039 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
1041 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
1042 &destroy_by_session_id, &dc);
1043 free_address (dc.aa);
1048 * Notification about active use of an address.
1049 * in_use == GNUNET_YES:
1050 * This address is used to maintain an active connection with a peer.
1051 * in_use == GNUNET_NO:
1052 * This address is no longer used to maintain an active connection with a peer.
1054 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1057 * @param handle the address handle to use
1059 * @param plugin_name transport plugin name
1060 * @param plugin_addr plugin address
1061 * @param plugin_addr_len length of the plugin address
1062 * @param session_id session id, can be 0
1063 * @param in_use GNUNET_YES if GNUNET_NO
1064 * @return GNUNET_SYSERR on failure (address unknown ...)
1067 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1068 const struct GNUNET_PeerIdentity *peer,
1069 const char *plugin_name,
1070 const void *plugin_addr,
1071 size_t plugin_addr_len,
1072 uint32_t session_id,
1075 struct ATS_Address *ea;
1077 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1078 "Received `%s' for peer `%s'\n",
1082 if (GNUNET_NO == handle->running)
1083 return GNUNET_SYSERR;
1085 ea = lookup_address (handle, peer, plugin_name,
1086 plugin_addr, plugin_addr_len,
1087 session_id, NULL, 0);
1090 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1091 "Trying to set unknown address `%s', %s %u %s \n",
1093 plugin_name, session_id,
1094 (GNUNET_NO == in_use) ? "NO" : "YES");
1096 return GNUNET_SYSERR;
1098 if (ea->used == in_use)
1101 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1102 "Address in use called multiple times for peer `%s': %s -> %s \n",
1104 (GNUNET_NO == ea->used) ? "NO" : "YES",
1105 (GNUNET_NO == in_use) ? "NO" : "YES");
1106 return GNUNET_SYSERR;
1109 /* Tell solver about update */
1110 handle->s_update (handle->solver, handle->addresses, ea, session_id, in_use, NULL, 0);
1118 * Cancel address suggestions for a peer
1120 * @param handle the address handle
1121 * @param peer the peer id
1124 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1125 const struct GNUNET_PeerIdentity *peer)
1127 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1129 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1130 "Received request: `%s' for peer %s\n", "request_address_cancel", GNUNET_i2s (peer));
1134 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1141 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1142 "No address requests pending for peer `%s', cannot remove!\n", GNUNET_i2s (peer));
1145 handle->s_get_stop (handle->solver, handle->addresses, peer);
1146 GAS_addresses_handle_backoff_reset (handle, peer);
1147 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1148 "Removed request pending for peer `%s\n", GNUNET_i2s (peer));
1149 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1155 * Request address suggestions for a peer
1157 * @param handle the address handle
1158 * @param peer the peer id
1161 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1162 const struct GNUNET_PeerIdentity *peer)
1164 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1165 struct ATS_Address *aa;
1166 struct GNUNET_ATS_Information *ats;
1167 unsigned int ats_count;
1169 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1170 "Received `%s' for peer `%s'\n",
1174 if (GNUNET_NO == handle->running)
1178 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1179 break; /* already suggesting */
1184 cur = GNUNET_malloc (sizeof (struct GAS_Addresses_Suggestion_Requests));
1186 GNUNET_CONTAINER_DLL_insert (handle->r_head, handle->r_tail, cur);
1189 /* Get prefered address from solver */
1190 aa = (struct ATS_Address *) handle->s_get (handle->solver, handle->addresses, peer);
1193 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1194 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
1198 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1199 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
1201 ats_count = assemble_ats_information (aa, &ats);
1202 GAS_scheduling_transmit_address_suggestion (peer,
1204 aa->addr, aa->addr_len,
1207 aa->assigned_bw_out,
1208 aa->assigned_bw_in);
1210 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
1211 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get(), aa->block_interval);
1213 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1214 "Address %p ready for suggestion, block interval now %llu \n",
1215 aa, aa->block_interval);
1222 * Iterator to reset address blocking
1224 * @param cls not used
1225 * @param key the peer
1226 * @param value the address to reset
1227 * @return GNUNET_OK to continue
1230 reset_address_it (void *cls, const struct GNUNET_HashCode *key, void *value)
1232 struct ATS_Address *aa = value;
1234 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1235 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1236 GNUNET_i2s (&aa->peer), aa, aa->block_interval);
1238 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1239 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1245 * Reset suggestion backoff for a peer
1247 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1248 * reset using this function
1250 * @param handle the address handle
1251 * @param peer the peer id
1254 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1255 const struct GNUNET_PeerIdentity *peer)
1257 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1258 "Received `%s' for peer `%s'\n",
1262 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses,
1270 * Change the preference for a peer
1272 * @param handle the address handle
1273 * @param client the client sending this request
1274 * @param peer the peer id
1275 * @param kind the preference kind to change
1276 * @param score the new preference score
1279 GAS_addresses_change_preference (struct GAS_Addresses_Handle *handle,
1281 const struct GNUNET_PeerIdentity *peer,
1282 enum GNUNET_ATS_PreferenceKind kind,
1285 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1286 "Received `%s' for peer `%s' for client %p\n",
1287 "CHANGE PREFERENCE",
1288 GNUNET_i2s (peer), client);
1290 if (GNUNET_NO == handle->running)
1293 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->addresses,
1296 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1297 "Received `%s' for unknown peer `%s' from client %p\n",
1298 "CHANGE PREFERENCE",
1299 GNUNET_i2s (peer), client);
1303 /* Tell solver about update */
1304 handle->s_pref (handle->solver, client, peer, kind, score);
1309 * Load quotas for networks from configuration
1311 * @param cfg configuration handle
1312 * @param out_dest where to write outbound quotas
1313 * @param in_dest where to write inbound quotas
1314 * @param dest_length length of inbound and outbound arrays
1315 * @return number of networks loaded
1318 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1320 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1321 char * entry_in = NULL;
1322 char * entry_out = NULL;
1323 char * quota_out_str;
1324 char * quota_in_str;
1328 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1332 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1333 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1336 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
1339 if (0 == strcmp(quota_out_str, GNUNET_ATS_MaxBandwidthString))
1341 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1344 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, &out_dest[c])))
1346 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out, &out_dest[c])))
1349 if (GNUNET_NO == res)
1351 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1352 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1353 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1357 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Outbound quota configure for network `%s' is %llu\n"),
1358 network_str[c], out_dest[c]);
1360 GNUNET_free (quota_out_str);
1364 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1365 network_str[c], GNUNET_ATS_DefaultBandwidth);
1366 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1370 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
1373 if (0 == strcmp(quota_in_str, GNUNET_ATS_MaxBandwidthString))
1375 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1378 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1380 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in, &in_dest[c])))
1383 if (GNUNET_NO == res)
1385 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1386 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
1387 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1391 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Inbound quota configured for network `%s' is %llu\n"),
1392 network_str[c], in_dest[c]);
1394 GNUNET_free (quota_in_str);
1398 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1399 network_str[c], GNUNET_ATS_DefaultBandwidth);
1400 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1402 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]);
1403 GNUNET_free (entry_out);
1404 GNUNET_free (entry_in);
1406 return GNUNET_ATS_NetworkTypeCount;
1411 * Callback for solver to notify about assignment changes
1413 * @param cls the GAS_Addresses_Handle
1414 * @param address the address with changes
1417 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1419 struct GAS_Addresses_Handle *handle = cls;
1420 struct GAS_Addresses_Suggestion_Requests *cur;
1421 struct GNUNET_ATS_Information *ats;
1422 unsigned int ats_count;
1424 GNUNET_assert (handle != NULL);
1425 GNUNET_assert (address != NULL);
1427 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Bandwidth assignment changed for peer %s \n", GNUNET_i2s(&address->peer));
1430 ats_count = assemble_ats_information (address, &ats);
1432 /* Notify performance clients about changes to address */
1433 GAS_performance_notify_all_clients (&address->peer,
1435 address->addr, address->addr_len,
1436 address->session_id,
1438 address->assigned_bw_out,
1439 address->assigned_bw_in);
1440 cur = handle->r_head;
1443 if (0 == memcmp (&address->peer, &cur->id, sizeof (cur->id)))
1444 break; /* we have an address request pending*/
1449 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1450 "Nobody is interested in peer `%s' :(\n",GNUNET_i2s (&address->peer));
1455 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1456 "Sending bandwidth update for peer `%s'\n",GNUNET_i2s (&address->peer));
1458 /* *Notify scheduling clients about suggestion */
1459 GAS_scheduling_transmit_address_suggestion (&address->peer,
1461 address->addr, address->addr_len,
1462 address->session_id,
1464 address->assigned_bw_out,
1465 address->assigned_bw_in);
1471 * Initialize address subsystem. The addresses subsystem manages the addresses
1472 * known and current performance information. It has a solver component
1473 * responsible for the resource allocation. It tells the solver about changes
1474 * and receives updates when the solver changes the ressource allocation.
1476 * @param cfg configuration to use
1477 * @param stats the statistics handle to use
1478 * @return an address handle
1480 struct GAS_Addresses_Handle *
1481 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1482 const struct GNUNET_STATISTICS_Handle *stats)
1484 struct GAS_Addresses_Handle *ah;
1485 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1486 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1487 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1492 ah = GNUNET_malloc (sizeof (struct GAS_Addresses_Handle));
1493 ah->running = GNUNET_NO;
1495 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1496 /* Initialize the addresses database */
1497 ah->addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1498 GNUNET_assert (NULL != ah->addresses);
1500 /* Figure out configured solution method */
1501 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1503 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1504 ah->ats_mode = MODE_SIMPLISTIC;
1508 for (c = 0; c < strlen (mode_str); c++)
1509 mode_str[c] = toupper (mode_str[c]);
1510 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1512 ah->ats_mode = MODE_SIMPLISTIC;
1514 else if (0 == strcmp (mode_str, "MLP"))
1516 ah->ats_mode = MODE_MLP;
1518 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1519 ah->ats_mode = MODE_SIMPLISTIC;
1524 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1525 ah->ats_mode = MODE_SIMPLISTIC;
1527 GNUNET_free (mode_str);
1529 /* Start configured solution method */
1530 switch (ah->ats_mode)
1533 /* Init the MLP solver with default values */
1535 ah->ats_mode = MODE_MLP;
1536 ah->s_init = &GAS_mlp_init;
1537 ah->s_add = &GAS_mlp_address_add;
1538 ah->s_update = &GAS_mlp_address_update;
1539 ah->s_get = &GAS_mlp_get_preferred_address;
1540 ah->s_get_stop = &GAS_mlp_stop_get_preferred_address;
1541 ah->s_pref = &GAS_mlp_address_change_preference;
1542 ah->s_del = &GAS_mlp_address_delete;
1543 ah->s_done = &GAS_mlp_done;
1549 case MODE_SIMPLISTIC:
1550 /* Init the simplistic solver with default values */
1551 ah->ats_mode = MODE_SIMPLISTIC;
1552 ah->s_init = &GAS_simplistic_init;
1553 ah->s_add = &GAS_simplistic_address_add;
1554 ah->s_update = &GAS_simplistic_address_update;
1555 ah->s_get = &GAS_simplistic_get_preferred_address;
1556 ah->s_get_stop = &GAS_simplistic_stop_get_preferred_address;
1557 ah->s_pref = &GAS_simplistic_address_change_preference;
1558 ah->s_del = &GAS_simplistic_address_delete;
1559 ah->s_done = &GAS_simplistic_done;
1560 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1567 GNUNET_assert (NULL != ah->s_init);
1568 GNUNET_assert (NULL != ah->s_add);
1569 GNUNET_assert (NULL != ah->s_update);
1570 GNUNET_assert (NULL != ah->s_get);
1571 GNUNET_assert (NULL != ah->s_get_stop);
1572 GNUNET_assert (NULL != ah->s_pref);
1573 GNUNET_assert (NULL != ah->s_del);
1574 GNUNET_assert (NULL != ah->s_done);
1576 quota_count = load_quotas(cfg, quotas_in, quotas_out, GNUNET_ATS_NetworkTypeCount);
1578 ah->solver = ah->s_init (cfg, stats, quotas, quotas_in, quotas_out, quota_count, &bandwidth_changed_cb, ah);
1579 if (NULL == ah->solver)
1581 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize solver!\n");
1586 /* up and running */
1587 ah->running = GNUNET_YES;
1593 * Free memory of address.
1596 * @param key peer identity (unused)
1597 * @param value the 'struct ATS_Address' to free
1598 * @return GNUNET_OK (continue to iterate)
1601 free_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1603 struct GAS_Addresses_Handle *handle = cls;
1604 struct ATS_Address *aa = value;
1605 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
1606 destroy_address (handle, aa);
1612 * Remove all addresses
1614 * @param handle the address handle to use
1617 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
1619 if (GNUNET_NO == handle->running)
1622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1626 if (handle->addresses != NULL)
1627 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &free_address_it, handle);
1632 * Shutdown address subsystem.
1634 * @param handle the address handle to shutdown
1637 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
1639 struct GAS_Addresses_Suggestion_Requests *cur;
1641 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1642 "Shutting down addresses\n");
1643 GNUNET_assert (NULL != handle);
1644 GAS_addresses_destroy_all (handle);
1645 handle->running = GNUNET_NO;
1646 GNUNET_CONTAINER_multihashmap_destroy (handle->addresses);
1647 handle->addresses = NULL;
1648 while (NULL != (cur = handle->r_head))
1650 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1653 handle->s_done (handle->solver);
1654 GNUNET_free (handle);
1655 /* Stop configured solution method */
1660 struct PeerIteratorContext
1662 GNUNET_ATS_Peer_Iterator it;
1664 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1669 * Iterator to iterate over all peers
1671 * @param cls a PeerIteratorContext
1672 * @param key the peer id
1673 * @param value the ATS_address
1674 * @return GNUNET_OK to continue
1678 const struct GNUNET_HashCode * key,
1681 struct PeerIteratorContext *ip_ctx = cls;
1682 struct GNUNET_PeerIdentity tmp;
1684 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1686 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1687 tmp.hashPubKey = (*key);
1688 ip_ctx->it (ip_ctx->it_cls, &tmp);
1696 * Return information all peers currently known to ATS
1698 * @param handle the address handle to use
1699 * @param p_it the iterator to call for every peer
1700 * @param p_it_cls the closure for the iterator
1703 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
1704 GNUNET_ATS_Peer_Iterator p_it,
1707 struct PeerIteratorContext ip_ctx;
1712 GNUNET_assert (NULL != handle->addresses);
1714 size = GNUNET_CONTAINER_multihashmap_size(handle->addresses);
1718 ip_ctx.it_cls = p_it_cls;
1719 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1720 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &peer_it, &ip_ctx);
1721 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1723 p_it (p_it_cls, NULL);
1727 struct PeerInfoIteratorContext
1729 GNUNET_ATS_PeerInfo_Iterator it;
1735 * Iterator to iterate over a peer's addresses
1737 * @param cls a PeerInfoIteratorContext
1738 * @param key the peer id
1739 * @param value the ATS_address
1740 * @return GNUNET_OK to continue
1743 peerinfo_it (void *cls,
1744 const struct GNUNET_HashCode * key,
1747 struct PeerInfoIteratorContext *pi_ctx = cls;
1748 struct ATS_Address *addr = (struct ATS_Address *) value;
1749 struct GNUNET_ATS_Information *ats;
1752 if (NULL != pi_ctx->it)
1754 ats_count = assemble_ats_information (addr, &ats);
1756 pi_ctx->it (pi_ctx->it_cls,
1759 addr->addr, addr->addr_len,
1762 addr->assigned_bw_out,
1763 addr->assigned_bw_in);
1771 * Return information all peers currently known to ATS
1773 * @param handle the address handle to use
1774 * @param peer the respective peer
1775 * @param pi_it the iterator to call for every peer
1776 * @param pi_it_cls the closure for the iterator
1779 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
1780 const struct GNUNET_PeerIdentity *peer,
1781 GNUNET_ATS_PeerInfo_Iterator pi_it,
1784 struct PeerInfoIteratorContext pi_ctx;
1785 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1786 GNUNET_assert (NULL != peer);
1787 GNUNET_assert (NULL != handle->addresses);
1789 return; /* does not make sense without callback */
1791 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1793 pi_ctx.it_cls = pi_it_cls;
1795 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1798 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1803 /* end of gnunet-service-ats_addresses.c */