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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 * Disassemble ATS information and update performance information in address
375 * Updates existing information and adds new information
377 * @param src source ATS information
378 * @param ats_count number of ATS information
379 * @param dest destination address
380 * @return GNUNET_YES if address was address updated, GNUNET_NO otherwise
383 disassemble_ats_information (const struct GNUNET_ATS_Information *src,
385 struct ATS_Address *dest)
393 struct GNUNET_ATS_Information add_atsi[ats_count];
394 struct GNUNET_ATS_Information *tmp_atsi;
395 uint32_t add_atsi_count;
400 if (NULL == dest->atsi)
402 dest->atsi = GNUNET_malloc (ats_count * sizeof (struct GNUNET_ATS_Information));
403 dest->atsi_count = ats_count;
404 memcpy (dest->atsi, src, ats_count * sizeof (struct GNUNET_ATS_Information));
408 /* Update existing performance information */
409 for (c1 = 0; c1 < ats_count; c1++)
412 for (c2 = 0; c2 < dest->atsi_count; c2++)
414 if (src[c1].type == dest->atsi[c2].type)
416 if (src[c1].value != dest->atsi[c2].value)
418 dest->atsi[c2].value = src[c1].value;
425 if (GNUNET_NO == found)
427 add_atsi[add_atsi_count] = src[c1];
432 if (add_atsi_count > 0)
434 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
435 sizeof (sizeof (struct GNUNET_ATS_Information)));
436 memcpy (tmp_atsi, dest->atsi, dest->atsi_count * sizeof (struct GNUNET_ATS_Information));
437 memcpy (&tmp_atsi[dest->atsi_count], add_atsi, add_atsi_count * sizeof (struct GNUNET_ATS_Information));
445 * Free the given address
447 * @param addr address to destroy
450 free_address (struct ATS_Address *addr)
452 GNUNET_free (addr->plugin);
453 GNUNET_free_non_null (addr->atsi);
458 * Create a ATS_address with the given information
461 * @param plugin_name plugin
462 * @param plugin_addr address
463 * @param plugin_addr_len address length
464 * @param session_id session
465 * @return the ATS_Address
467 static struct ATS_Address *
468 create_address (const struct GNUNET_PeerIdentity *peer,
469 const char *plugin_name,
470 const void *plugin_addr, size_t plugin_addr_len,
473 struct ATS_Address *aa = NULL;
475 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
477 aa->addr_len = plugin_addr_len;
479 memcpy (&aa[1], plugin_addr, plugin_addr_len);
480 aa->plugin = GNUNET_strdup (plugin_name);
481 aa->session_id = session_id;
482 aa->active = GNUNET_NO;
483 aa->used = GNUNET_NO;
484 aa->solver_information = NULL;
487 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init(0);
488 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(0);
494 * Destroy the given address.
496 * @param handle the address handle
497 * @param addr address to destroy
498 * @return GNUNET_YES if bandwidth allocations should be recalcualted
501 destroy_address (struct GAS_Addresses_Handle *handle, struct ATS_Address *addr)
506 GNUNET_assert (GNUNET_YES ==
507 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
508 &addr->peer.hashPubKey,
515 struct CompareAddressContext
517 const struct ATS_Address *search;
519 /* exact_address != NULL if address and session is equal */
520 struct ATS_Address *exact_address;
521 /* exact_address != NULL if address and session is 0 */
522 struct ATS_Address *base_address;
528 * @param cls a CompareAddressContext containin the source address
530 * @param value the address to compare with
531 * @return GNUNET_YES to continue, GNUNET_NO if address is founce
535 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
537 struct CompareAddressContext *cac = cls;
538 struct ATS_Address *aa = value;
540 /* Find an matching exact address:
543 * aa->addr_len == cac->search->addr_len
544 * aa->plugin == cac->search->plugin
545 * aa->addr == cac->search->addr
546 * aa->session == cac->search->session
548 * return as exact address
550 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
552 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
553 cac->exact_address = aa;
556 /* Find an matching base address:
560 * aa->session_id == 0
563 * aa->addr_len == cac->search->addr_len
564 * aa->plugin == cac->search->plugin
565 * aa->addr == cac->search->addr
567 * return as base address
569 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
571 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
572 cac->base_address = aa;
575 /* Find an matching exact address based on session:
579 * cac->search->addr_len == 0
582 * aa->plugin == cac->search->plugin
583 * aa->session_id == cac->search->session_id
585 * return as exact address
587 if (0 == cac->search->addr_len)
589 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
590 cac->exact_address = aa;
593 if (cac->exact_address == NULL)
594 return GNUNET_YES; /* Continue iteration to find exact address */
596 return GNUNET_NO; /* Stop iteration since we have an exact address */
601 * Find an existing equivalent address record.
602 * Compares by peer identity and network address OR by session ID
603 * (one of the two must match).
605 * @param handle the address handle
606 * @param peer peer to lookup addresses for
607 * @param addr existing address record
608 * @return existing address record, NULL for none
611 find_equivalent_address (struct GAS_Addresses_Handle *handle,
612 const struct GNUNET_PeerIdentity *peer,
613 const struct ATS_Address *addr)
615 struct CompareAddressContext cac;
617 cac.exact_address = NULL;
618 cac.base_address = NULL;
620 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
621 &compare_address_it, &cac);
623 if (cac.exact_address == NULL)
624 return cac.base_address;
625 return cac.exact_address;
630 * Lookup an ATS address by the address properties and session or return an
631 * equivalent address with a session == 0
633 * @param handle the address handle to use
635 * @param plugin_name transport plugin name
636 * @param plugin_addr plugin address
637 * @param plugin_addr_len length of the plugin address
638 * @param session_id session id, can be 0
639 * @param atsi performance information for this address
640 * @param atsi_count number of performance information contained
641 * @return an ATS_address or NULL
644 static struct ATS_Address *
645 lookup_address (struct GAS_Addresses_Handle *handle,
646 const struct GNUNET_PeerIdentity *peer,
647 const char *plugin_name,
648 const void *plugin_addr,
649 size_t plugin_addr_len,
651 const struct GNUNET_ATS_Information *atsi,
654 struct ATS_Address *aa;
655 struct ATS_Address *ea;
657 aa = create_address (peer,
659 plugin_addr, plugin_addr_len,
662 /* Get existing address or address with session == 0 */
663 ea = find_equivalent_address (handle, peer, aa);
669 else if (ea->session_id != session_id)
679 * Add a new address for a peer.
681 * @param handle the address handle to use
683 * @param plugin_name transport plugin name
684 * @param plugin_addr plugin address
685 * @param plugin_addr_len length of the plugin address
686 * @param session_id session id, can be 0
687 * @param atsi performance information for this address
688 * @param atsi_count number of performance information contained
691 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
692 const struct GNUNET_PeerIdentity *peer,
693 const char *plugin_name, const void *plugin_addr,
694 size_t plugin_addr_len, uint32_t session_id,
695 const struct GNUNET_ATS_Information *atsi,
698 struct ATS_Address *aa;
699 struct ATS_Address *ea;
700 unsigned int ats_res;
702 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
703 "Received `%s' for peer `%s'\n",
707 if (GNUNET_NO == handle->running)
710 GNUNET_assert (NULL != handle->addresses);
712 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
715 if (atsi_count != (ats_res = disassemble_ats_information(atsi, atsi_count, aa)))
717 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
718 "While adding address: had %u ATS elements to add, could only add %u\n",
719 atsi_count, ats_res);
722 /* Get existing address or address with session == 0 */
723 ea = find_equivalent_address (handle, peer, aa);
726 /* We have a new address */
727 GNUNET_assert (GNUNET_OK ==
728 GNUNET_CONTAINER_multihashmap_put (handle->addresses,
729 &peer->hashPubKey, aa,
730 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
731 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Added new address for peer `%s' session id %u, %p\n",
732 GNUNET_i2s (peer), session_id, aa);
733 /* Tell solver about new address */
734 handle->s_add (handle->solver, handle->addresses, aa);
735 /* Notify performance clients about new address */
736 GAS_performance_notify_all_clients (&aa->peer,
738 aa->addr, aa->addr_len,
740 aa->atsi, aa->atsi_count,
745 GNUNET_free (aa->plugin);
748 if (ea->session_id != 0)
750 /* This address with the same session is already existing
751 * Should not happen */
752 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
753 "Added already existing address for peer `%s' `%s' %p with new session %u\n",
754 GNUNET_i2s (peer), plugin_name, session_id);
759 /* We have an address without an session, update this address */
761 /* Notify solver about update with atsi information and session */
762 handle->s_update (handle->solver, handle->addresses, ea, session_id, ea->used, atsi, atsi_count);
765 ea->session_id = session_id;
766 if (GNUNET_YES == disassemble_ats_information (atsi, atsi_count, ea))
768 GAS_performance_notify_all_clients (&aa->peer,
770 aa->addr, aa->addr_len,
772 aa->atsi, aa->atsi_count,
776 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
777 "Updated existing address for peer `%s' %p with new session %u\n",
778 GNUNET_i2s (peer), ea, session_id);
783 * Update an address with a session or performance information for a peer.
785 * If an address was added without a session it will be updated with the
788 * @param handle the address handle to use
790 * @param plugin_name transport plugin name
791 * @param plugin_addr plugin address
792 * @param plugin_addr_len length of the plugin address
793 * @param session_id session id, can be 0
794 * @param atsi performance information for this address
795 * @param atsi_count number of performance information contained
798 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
799 const struct GNUNET_PeerIdentity *peer,
800 const char *plugin_name, const void *plugin_addr,
801 size_t plugin_addr_len, uint32_t session_id,
802 const struct GNUNET_ATS_Information *atsi,
805 struct ATS_Address *aa;
807 if (GNUNET_NO == handle->running)
810 GNUNET_assert (NULL != handle->addresses);
812 /* Get existing address */
813 aa = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
814 session_id, atsi, atsi_count);
817 /* GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n", */
818 /* GNUNET_i2s (peer), plugin_name, session_id); */
819 /* GNUNET_break (0); */
823 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
824 "Received `%s' for peer `%s' address \n",
826 GNUNET_i2s (peer), aa);
828 /* Tell solver about update */
829 handle->s_update (handle->solver, handle->addresses, aa, session_id, aa->used, atsi, atsi_count);
832 if (GNUNET_YES == disassemble_ats_information (atsi, atsi_count, aa))
834 /* Notify performance clients about updated address */
835 GAS_performance_notify_all_clients (&aa->peer,
837 aa->addr, aa->addr_len,
839 aa->atsi, aa->atsi_count,
846 struct DestroyContext
848 struct ATS_Address *aa;
850 struct GAS_Addresses_Handle *handle;
853 * GNUNET_NO : full address
854 * GNUNET_YES : just session
863 * If session != 0, just the session is deleted, the address itself still exists
864 * If session == 0, remove full address
865 * If session == 0 and addrlen == 0, destroy inbound address
869 * @param value the 'struct ATS_Address'
870 * @return GNUNET_OK (continue to iterate)
873 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
875 struct DestroyContext *dc = cls;
876 struct GAS_Addresses_Handle *handle = dc->handle;
877 const struct ATS_Address *des = dc->aa;
878 struct ATS_Address *aa = value;
880 GNUNET_assert (0 == memcmp (&aa->peer, &des->peer,
881 sizeof (struct GNUNET_PeerIdentity)));
884 if (des->session_id == 0)
886 /* Session == 0, remove full address */
887 if ((0 == strcmp (des->plugin, aa->plugin)) &&
888 (aa->addr_len == des->addr_len) &&
889 (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
892 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
893 "Deleting full address for peer `%s' session %u %p\n",
894 GNUNET_i2s (&aa->peer), aa->session_id, aa);
896 /* Notify solver about deletion */
897 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
898 destroy_address (handle, aa);
899 dc->result = GNUNET_NO;
900 return GNUNET_OK; /* Continue iteration */
905 /* Session != 0, just remove session */
906 if (aa->session_id != des->session_id)
907 return GNUNET_OK; /* irrelevant */
909 if ((aa->session_id != 0) &&
910 (0 != strcmp (des->plugin, aa->plugin)))
912 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
913 "Different plugins during removal: `%s' vs `%s' \n",
914 des->plugin, aa->plugin);
919 if (aa->addr_len == 0)
921 /* Inbound connection died, delete full address */
922 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
923 "Deleting inbound address for peer `%s': `%s' session %u\n",
924 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
926 /* Notify solver about deletion */
927 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
928 destroy_address (handle, aa);
929 dc->result = GNUNET_NO;
930 return GNUNET_OK; /* Continue iteration */
935 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
936 "Deleting session for peer `%s': `%s' %u\n",
937 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
938 /* Notify solver to delete session */
939 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_YES);
949 * Remove an address or just a session for a peer.
951 * @param handle the address handle to use
953 * @param plugin_name transport plugin name
954 * @param plugin_addr plugin address
955 * @param plugin_addr_len length of the plugin address
956 * @param session_id session id, can be 0
959 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
960 const struct GNUNET_PeerIdentity *peer,
961 const char *plugin_name,
962 const void *plugin_addr,
963 size_t plugin_addr_len,
966 struct ATS_Address *ea;
967 struct DestroyContext dc;
969 if (GNUNET_NO == handle->running)
972 /* Get existing address */
973 ea = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
974 session_id, NULL, 0);
976 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
977 "Received `%s' for peer `%s' address %p session %u\n",
979 GNUNET_i2s (peer), ea, session_id);
983 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
984 GNUNET_i2s (peer), plugin_name, session_id);
988 GNUNET_break (0 < strlen (plugin_name));
990 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
992 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
993 &destroy_by_session_id, &dc);
994 free_address (dc.aa);
999 * Notification about active use of an address.
1000 * in_use == GNUNET_YES:
1001 * This address is used to maintain an active connection with a peer.
1002 * in_use == GNUNET_NO:
1003 * This address is no longer used to maintain an active connection with a peer.
1005 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1008 * @param handle the address handle to use
1010 * @param plugin_name transport plugin name
1011 * @param plugin_addr plugin address
1012 * @param plugin_addr_len length of the plugin address
1013 * @param session_id session id, can be 0
1014 * @param in_use GNUNET_YES if GNUNET_NO
1015 * @return GNUNET_SYSERR on failure (address unknown ...)
1018 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1019 const struct GNUNET_PeerIdentity *peer,
1020 const char *plugin_name,
1021 const void *plugin_addr,
1022 size_t plugin_addr_len,
1023 uint32_t session_id,
1026 struct ATS_Address *ea;
1028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1029 "Received `%s' for peer `%s'\n",
1033 if (GNUNET_NO == handle->running)
1034 return GNUNET_SYSERR;
1036 ea = lookup_address (handle, peer, plugin_name,
1037 plugin_addr, plugin_addr_len,
1038 session_id, NULL, 0);
1041 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1042 "Trying to set unknown address `%s', %s %u %s \n",
1044 plugin_name, session_id,
1045 (GNUNET_NO == in_use) ? "NO" : "YES");
1047 return GNUNET_SYSERR;
1049 if (ea->used == in_use)
1052 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1053 "Address in use called multiple times for peer `%s': %s -> %s \n",
1055 (GNUNET_NO == ea->used) ? "NO" : "YES",
1056 (GNUNET_NO == in_use) ? "NO" : "YES");
1057 return GNUNET_SYSERR;
1060 /* Tell solver about update */
1061 handle->s_update (handle->solver, handle->addresses, ea, session_id, in_use, NULL, 0);
1069 * Cancel address suggestions for a peer
1071 * @param handle the address handle
1072 * @param peer the peer id
1075 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1076 const struct GNUNET_PeerIdentity *peer)
1078 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1080 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1081 "Received request: `%s' for peer %s\n", "request_address_cancel", GNUNET_i2s (peer));
1085 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1092 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1093 "No address requests pending for peer `%s', cannot remove!\n", GNUNET_i2s (peer));
1096 handle->s_get_stop (handle->solver, handle->addresses, peer);
1097 GAS_addresses_handle_backoff_reset (handle, peer);
1098 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1099 "Removed request pending for peer `%s\n", GNUNET_i2s (peer));
1100 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1106 * Request address suggestions for a peer
1108 * @param handle the address handle
1109 * @param peer the peer id
1112 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1113 const struct GNUNET_PeerIdentity *peer)
1115 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1116 struct ATS_Address *aa;
1118 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1119 "Received `%s' for peer `%s'\n",
1123 if (GNUNET_NO == handle->running)
1127 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1128 break; /* already suggesting */
1133 cur = GNUNET_malloc (sizeof (struct GAS_Addresses_Suggestion_Requests));
1135 GNUNET_CONTAINER_DLL_insert (handle->r_head, handle->r_tail, cur);
1138 /* Get prefered address from solver */
1139 aa = (struct ATS_Address *) handle->s_get (handle->solver, handle->addresses, peer);
1142 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1143 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
1147 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1148 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
1150 GAS_scheduling_transmit_address_suggestion (peer,
1152 aa->addr, aa->addr_len,
1154 aa->atsi, aa->atsi_count,
1155 aa->assigned_bw_out,
1156 aa->assigned_bw_in);
1158 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
1159 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get(), aa->block_interval);
1161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1162 "Address %p ready for suggestion, block interval now %llu \n",
1163 aa, aa->block_interval);
1168 * Iterator to reset address blocking
1170 * @param cls not used
1171 * @param key the peer
1172 * @param value the address to reset
1173 * @return GNUNET_OK to continue
1176 reset_address_it (void *cls, const struct GNUNET_HashCode *key, void *value)
1178 struct ATS_Address *aa = value;
1180 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1181 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1182 GNUNET_i2s (&aa->peer), aa, aa->block_interval);
1184 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1185 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1191 * Reset suggestion backoff for a peer
1193 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1194 * reset using this function
1196 * @param handle the address handle
1197 * @param peer the peer id
1200 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1201 const struct GNUNET_PeerIdentity *peer)
1203 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1204 "Received `%s' for peer `%s'\n",
1208 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses,
1216 * Change the preference for a peer
1218 * @param handle the address handle
1219 * @param client the client sending this request
1220 * @param peer the peer id
1221 * @param kind the preference kind to change
1222 * @param score the new preference score
1225 GAS_addresses_change_preference (struct GAS_Addresses_Handle *handle,
1227 const struct GNUNET_PeerIdentity *peer,
1228 enum GNUNET_ATS_PreferenceKind kind,
1231 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1232 "Received `%s' for peer `%s' for client %p\n",
1233 "CHANGE PREFERENCE",
1234 GNUNET_i2s (peer), client);
1236 if (GNUNET_NO == handle->running)
1239 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->addresses,
1242 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1243 "Received `%s' for unknown peer `%s' from client %p\n",
1244 "CHANGE PREFERENCE",
1245 GNUNET_i2s (peer), client);
1249 /* Tell solver about update */
1250 handle->s_pref (handle->solver, client, peer, kind, score);
1255 * Load quotas for networks from configuration
1257 * @param cfg configuration handle
1258 * @param out_dest where to write outbound quotas
1259 * @param in_dest where to write inbound quotas
1260 * @param dest_length length of inbound and outbound arrays
1261 * @return number of networks loaded
1264 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1266 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1267 char * entry_in = NULL;
1268 char * entry_out = NULL;
1269 char * quota_out_str;
1270 char * quota_in_str;
1274 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1278 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1279 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1282 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
1285 if (0 == strcmp(quota_out_str, GNUNET_ATS_MaxBandwidthString))
1287 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1290 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, &out_dest[c])))
1292 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out, &out_dest[c])))
1295 if (GNUNET_NO == res)
1297 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1298 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1299 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1303 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Outbound quota configure for network `%s' is %llu\n"),
1304 network_str[c], out_dest[c]);
1306 GNUNET_free (quota_out_str);
1310 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1311 network_str[c], GNUNET_ATS_DefaultBandwidth);
1312 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1316 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
1319 if (0 == strcmp(quota_in_str, GNUNET_ATS_MaxBandwidthString))
1321 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1324 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1326 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in, &in_dest[c])))
1329 if (GNUNET_NO == res)
1331 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1332 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
1333 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1337 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Inbound quota configured for network `%s' is %llu\n"),
1338 network_str[c], in_dest[c]);
1340 GNUNET_free (quota_in_str);
1344 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1345 network_str[c], GNUNET_ATS_DefaultBandwidth);
1346 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1348 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]);
1349 GNUNET_free (entry_out);
1350 GNUNET_free (entry_in);
1352 return GNUNET_ATS_NetworkTypeCount;
1357 * Callback for solver to notify about assignment changes
1359 * @param cls the GAS_Addresses_Handle
1360 * @param address the address with changes
1363 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1365 struct GAS_Addresses_Handle *handle = cls;
1366 struct GAS_Addresses_Suggestion_Requests *cur;
1368 GNUNET_assert (handle != NULL);
1369 GNUNET_assert (address != NULL);
1371 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Bandwidth assignment changed for peer %s \n", GNUNET_i2s(&address->peer));
1373 /* Notify performance clients about changes to address */
1374 GAS_performance_notify_all_clients (&address->peer,
1376 address->addr, address->addr_len,
1377 address->session_id,
1378 address->atsi, address->atsi_count,
1379 address->assigned_bw_out,
1380 address->assigned_bw_in);
1381 cur = handle->r_head;
1384 if (0 == memcmp (&address->peer, &cur->id, sizeof (cur->id)))
1385 break; /* we have an address request pending*/
1390 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1391 "Nobody is interested in peer `%s' :(\n",GNUNET_i2s (&address->peer));
1395 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1396 "Sending bandwidth update for peer `%s'\n",GNUNET_i2s (&address->peer));
1398 /* *Notify scheduling clients about suggestion */
1399 GAS_scheduling_transmit_address_suggestion (&address->peer,
1401 address->addr, address->addr_len,
1402 address->session_id,
1403 address->atsi, address->atsi_count,
1404 address->assigned_bw_out,
1405 address->assigned_bw_in);
1410 * Initialize address subsystem. The addresses subsystem manages the addresses
1411 * known and current performance information. It has a solver component
1412 * responsible for the resource allocation. It tells the solver about changes
1413 * and receives updates when the solver changes the ressource allocation.
1415 * @param cfg configuration to use
1416 * @param stats the statistics handle to use
1417 * @return an address handle
1419 struct GAS_Addresses_Handle *
1420 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1421 const struct GNUNET_STATISTICS_Handle *stats)
1423 struct GAS_Addresses_Handle *ah;
1424 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1425 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1426 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1431 ah = GNUNET_malloc (sizeof (struct GAS_Addresses_Handle));
1432 ah->running = GNUNET_NO;
1434 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1435 /* Initialize the addresses database */
1436 ah->addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1437 GNUNET_assert (NULL != ah->addresses);
1439 /* Figure out configured solution method */
1440 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1442 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1443 ah->ats_mode = MODE_SIMPLISTIC;
1447 for (c = 0; c < strlen (mode_str); c++)
1448 mode_str[c] = toupper (mode_str[c]);
1449 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1451 ah->ats_mode = MODE_SIMPLISTIC;
1453 else if (0 == strcmp (mode_str, "MLP"))
1455 ah->ats_mode = MODE_MLP;
1457 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1458 ah->ats_mode = MODE_SIMPLISTIC;
1463 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1464 ah->ats_mode = MODE_SIMPLISTIC;
1466 GNUNET_free (mode_str);
1468 /* Start configured solution method */
1469 switch (ah->ats_mode)
1472 /* Init the MLP solver with default values */
1474 ah->ats_mode = MODE_MLP;
1475 ah->s_init = &GAS_mlp_init;
1476 ah->s_add = &GAS_mlp_address_add;
1477 ah->s_update = &GAS_mlp_address_update;
1478 ah->s_get = &GAS_mlp_get_preferred_address;
1479 ah->s_get_stop = &GAS_mlp_stop_get_preferred_address;
1480 ah->s_pref = &GAS_mlp_address_change_preference;
1481 ah->s_del = &GAS_mlp_address_delete;
1482 ah->s_done = &GAS_mlp_done;
1488 case MODE_SIMPLISTIC:
1489 /* Init the simplistic solver with default values */
1490 ah->ats_mode = MODE_SIMPLISTIC;
1491 ah->s_init = &GAS_simplistic_init;
1492 ah->s_add = &GAS_simplistic_address_add;
1493 ah->s_update = &GAS_simplistic_address_update;
1494 ah->s_get = &GAS_simplistic_get_preferred_address;
1495 ah->s_get_stop = &GAS_simplistic_stop_get_preferred_address;
1496 ah->s_pref = &GAS_simplistic_address_change_preference;
1497 ah->s_del = &GAS_simplistic_address_delete;
1498 ah->s_done = &GAS_simplistic_done;
1499 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1506 GNUNET_assert (NULL != ah->s_init);
1507 GNUNET_assert (NULL != ah->s_add);
1508 GNUNET_assert (NULL != ah->s_update);
1509 GNUNET_assert (NULL != ah->s_get);
1510 GNUNET_assert (NULL != ah->s_get_stop);
1511 GNUNET_assert (NULL != ah->s_pref);
1512 GNUNET_assert (NULL != ah->s_del);
1513 GNUNET_assert (NULL != ah->s_done);
1515 quota_count = load_quotas(cfg, quotas_in, quotas_out, GNUNET_ATS_NetworkTypeCount);
1517 ah->solver = ah->s_init (cfg, stats, quotas, quotas_in, quotas_out, quota_count, &bandwidth_changed_cb, ah);
1518 if (NULL == ah->solver)
1520 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize solver!\n");
1525 /* up and running */
1526 ah->running = GNUNET_YES;
1532 * Free memory of address.
1535 * @param key peer identity (unused)
1536 * @param value the 'struct ATS_Address' to free
1537 * @return GNUNET_OK (continue to iterate)
1540 free_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1542 struct GAS_Addresses_Handle *handle = cls;
1543 struct ATS_Address *aa = value;
1544 handle->s_del (handle->solver, handle->addresses, aa, GNUNET_NO);
1545 destroy_address (handle, aa);
1551 * Remove all addresses
1553 * @param handle the address handle to use
1556 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
1558 if (GNUNET_NO == handle->running)
1561 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1565 if (handle->addresses != NULL)
1566 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &free_address_it, handle);
1571 * Shutdown address subsystem.
1573 * @param handle the address handle to shutdown
1576 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
1578 struct GAS_Addresses_Suggestion_Requests *cur;
1580 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1581 "Shutting down addresses\n");
1582 GNUNET_assert (NULL != handle);
1583 GAS_addresses_destroy_all (handle);
1584 handle->running = GNUNET_NO;
1585 GNUNET_CONTAINER_multihashmap_destroy (handle->addresses);
1586 handle->addresses = NULL;
1587 while (NULL != (cur = handle->r_head))
1589 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1592 handle->s_done (handle->solver);
1593 GNUNET_free (handle);
1594 /* Stop configured solution method */
1599 struct PeerIteratorContext
1601 GNUNET_ATS_Peer_Iterator it;
1603 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1608 * Iterator to iterate over all peers
1610 * @param cls a PeerIteratorContext
1611 * @param key the peer id
1612 * @param value the ATS_address
1613 * @return GNUNET_OK to continue
1617 const struct GNUNET_HashCode * key,
1620 struct PeerIteratorContext *ip_ctx = cls;
1621 struct GNUNET_PeerIdentity tmp;
1623 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1625 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1626 tmp.hashPubKey = (*key);
1627 ip_ctx->it (ip_ctx->it_cls, &tmp);
1635 * Return information all peers currently known to ATS
1637 * @param handle the address handle to use
1638 * @param p_it the iterator to call for every peer
1639 * @param p_it_cls the closure for the iterator
1642 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
1643 GNUNET_ATS_Peer_Iterator p_it,
1646 struct PeerIteratorContext ip_ctx;
1651 GNUNET_assert (NULL != handle->addresses);
1653 size = GNUNET_CONTAINER_multihashmap_size(handle->addresses);
1657 ip_ctx.it_cls = p_it_cls;
1658 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1659 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &peer_it, &ip_ctx);
1660 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1662 p_it (p_it_cls, NULL);
1666 struct PeerInfoIteratorContext
1668 GNUNET_ATS_PeerInfo_Iterator it;
1674 * Iterator to iterate over a peer's addresses
1676 * @param cls a PeerInfoIteratorContext
1677 * @param key the peer id
1678 * @param value the ATS_address
1679 * @return GNUNET_OK to continue
1682 peerinfo_it (void *cls,
1683 const struct GNUNET_HashCode * key,
1686 struct PeerInfoIteratorContext *pi_ctx = cls;
1687 struct ATS_Address *addr = (struct ATS_Address *) value;
1689 if (NULL != pi_ctx->it)
1691 pi_ctx->it (pi_ctx->it_cls,
1694 addr->addr, addr->addr_len,
1696 addr->atsi, addr->atsi_count,
1697 addr->assigned_bw_out,
1698 addr->assigned_bw_in);
1705 * Return information all peers currently known to ATS
1707 * @param handle the address handle to use
1708 * @param peer the respective peer
1709 * @param pi_it the iterator to call for every peer
1710 * @param pi_it_cls the closure for the iterator
1713 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
1714 const struct GNUNET_PeerIdentity *peer,
1715 GNUNET_ATS_PeerInfo_Iterator pi_it,
1718 struct PeerInfoIteratorContext pi_ctx;
1719 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1720 GNUNET_assert (NULL != peer);
1721 GNUNET_assert (NULL != handle->addresses);
1723 return; /* does not make sense without callback */
1725 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1727 pi_ctx.it_cls = pi_it_cls;
1729 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1732 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1737 /* end of gnunet-service-ats_addresses.c */