2 This file is part of GNUnet.
3 (C) 2011 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
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13 General Public License for more details.
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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"
41 * Available ressource assignment modes
48 * Assign each peer an equal amount of bandwidth (bw)
50 * bw_per_peer = bw_total / #active addresses
57 * Solve ressource assignment as an optimization problem
58 * Uses an mixed integer programming solver
64 * Handle for ATS address component
66 struct GAS_Addresses_Suggestion_Requests
68 struct GAS_Addresses_Suggestion_Requests *next;
69 struct GAS_Addresses_Suggestion_Requests *prev;
71 struct GNUNET_PeerIdentity id;
75 * Handle for ATS address component
77 struct GAS_Addresses_Handle
80 * A multihashmap to store all addresses
82 struct GNUNET_CONTAINER_MultiHashMap *addresses;
85 * Configure WAN quota in
87 unsigned long long wan_quota_in;
90 * Configure WAN quota out
92 unsigned long long wan_quota_out;
95 * Is ATS addresses running
100 * Configured ATS solver
110 * Address suggestion requests DLL head
112 struct GAS_Addresses_Suggestion_Requests *r_head;
115 * Address suggestion requests DLL tail
117 struct GAS_Addresses_Suggestion_Requests *r_tail;
119 /* Solver functions */
124 GAS_solver_init s_init;
127 * Add an address to the solver
129 GAS_solver_address_add s_add;
132 * Update address in solver
134 GAS_solver_address_update s_update;
137 * Get address from solver
139 GAS_solver_get_preferred_address s_get;
142 * Delete address in solver
144 GAS_solver_address_delete s_del;
147 * Change preference for quality in solver
149 GAS_solver_address_change_preference s_pref;
154 GAS_solver_done s_done;
161 struct GAS_Addresses_Handle *handle;
165 assemble_ats_information (const struct ATS_Address *aa, struct GNUNET_ATS_Information **dest)
167 unsigned int ats_count = GNUNET_ATS_PropertyCount - 1;
168 struct GNUNET_ATS_Information *ats = GNUNET_malloc (ats_count * sizeof (struct GNUNET_ATS_Information));
171 ats[0].type = ntohl(GNUNET_ATS_UTILIZATION_UP);
172 ats[0].value = aa->atsp_utilization_out.value__;
173 ats[1].type = ntohl(GNUNET_ATS_UTILIZATION_DOWN);
174 ats[1].value = aa->atsp_utilization_in.value__;
175 ats[2].type = ntohl(GNUNET_ATS_NETWORK_TYPE);
176 ats[2].value = ntohl(aa->atsp_network_type);
177 ats[3].type = ntohl(GNUNET_ATS_QUALITY_NET_DELAY);
178 ats[3].value = ntohl(aa->atsp_latency.rel_value);
179 ats[4].type = ntohl(GNUNET_ATS_QUALITY_NET_DISTANCE);
180 ats[4].value = ntohl(aa->atsp_distance);
181 ats[5].type = ntohl(GNUNET_ATS_COST_WAN);
182 ats[5].value = ntohl (aa->atsp_cost_wan);
183 ats[6].type = ntohl(GNUNET_ATS_COST_LAN);
184 ats[6].value = ntohl (aa->atsp_cost_lan);
185 ats[7].type = ntohl(GNUNET_ATS_COST_WLAN);
186 ats[7].value = ntohl (aa->atsp_cost_wlan);
191 disassemble_ats_information (const struct GNUNET_ATS_Information *src,
193 struct ATS_Address *dest)
197 for (i = 0; i < ats_count; i++)
198 switch (ntohl (src[i].type))
200 case GNUNET_ATS_UTILIZATION_UP:
201 dest->atsp_utilization_out.value__ = src[i].value;
204 case GNUNET_ATS_UTILIZATION_DOWN:
205 dest->atsp_utilization_in.value__ = src[i].value;
208 case GNUNET_ATS_QUALITY_NET_DELAY:
209 dest->atsp_latency.rel_value = ntohl (src[i].value);
212 case GNUNET_ATS_QUALITY_NET_DISTANCE:
213 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
214 "Old ATS type %u %u\n", dest->atsp_distance, ntohl (src[i].type));
215 dest->atsp_distance = ntohl (src[i].value);
218 case GNUNET_ATS_COST_WAN:
219 dest->atsp_cost_wan = ntohl (src[i].value);
222 case GNUNET_ATS_COST_LAN:
223 dest->atsp_cost_lan = ntohl (src[i].value);
226 case GNUNET_ATS_COST_WLAN:
227 dest->atsp_cost_wlan = ntohl (src[i].value);
230 case GNUNET_ATS_NETWORK_TYPE:
231 dest->atsp_network_type = ntohl (src[i].value);
234 case GNUNET_ATS_ARRAY_TERMINATOR:
237 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
238 "Received unsupported ATS type %u\n", ntohl (src[i].type));
246 * Free the given address
247 * @param addr address to destroy
250 free_address (struct ATS_Address *addr)
252 GNUNET_free (addr->plugin);
257 * Create a ATS_address with the given information
259 * @param plugin_name plugin
260 * @param plugin_addr address
261 * @param plugin_addr_len address length
262 * @param session_id session
263 * @return the ATS_Address
265 static struct ATS_Address *
266 create_address (const struct GNUNET_PeerIdentity *peer,
267 const char *plugin_name,
268 const void *plugin_addr, size_t plugin_addr_len,
271 struct ATS_Address *aa = NULL;
273 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
275 aa->addr_len = plugin_addr_len;
277 memcpy (&aa[1], plugin_addr, plugin_addr_len);
278 aa->plugin = GNUNET_strdup (plugin_name);
279 aa->session_id = session_id;
280 aa->active = GNUNET_NO;
281 aa->solver_information = NULL;
282 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init(0);
283 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(0);
289 * Destroy the given address.
291 * @param addr address to destroy
292 * @return GNUNET_YES if bandwidth allocations should be recalcualted
295 destroy_address (struct ATS_Address *addr)
300 GNUNET_assert (GNUNET_YES ==
301 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
302 &addr->peer.hashPubKey,
305 handle->s_del (handle->solver, handle->addresses, addr);
311 struct CompareAddressContext
313 const struct ATS_Address *search;
315 /* exact_address != NULL if address and session is equal */
316 struct ATS_Address *exact_address;
317 /* exact_address != NULL if address and session is 0 */
318 struct ATS_Address *base_address;
323 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
325 struct CompareAddressContext *cac = cls;
326 struct ATS_Address *aa = value;
328 /* Find an matching exact address:
331 * aa->addr_len == cac->search->addr_len
332 * aa->plugin == cac->search->plugin
333 * aa->addr == cac->search->addr
334 * aa->session == cac->search->session
336 * return as exact address
338 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
340 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
341 cac->exact_address = aa;
344 /* Find an matching base address:
348 * aa->session_id == 0
351 * aa->addr_len == cac->search->addr_len
352 * aa->plugin == cac->search->plugin
353 * aa->addr == cac->search->addr
355 * return as base address
357 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
359 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
360 cac->base_address = aa;
363 /* Find an matching exact address based on session:
367 * cac->search->addr_len == 0
370 * aa->plugin == cac->search->plugin
371 * aa->session_id == cac->search->session_id
373 * return as exact address
375 if (0 == cac->search->addr_len)
377 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
378 cac->exact_address = aa;
381 if (cac->exact_address == NULL)
382 return GNUNET_YES; /* Continue iteration to find exact address */
384 return GNUNET_NO; /* Stop iteration since we have an exact address */
389 * Find an existing equivalent address record.
390 * Compares by peer identity and network address OR by session ID
391 * (one of the two must match).
393 * @param peer peer to lookup addresses for
394 * @param addr existing address record
395 * @return existing address record, NULL for none
398 find_address (const struct GNUNET_PeerIdentity *peer,
399 const struct ATS_Address *addr)
401 struct CompareAddressContext cac;
403 cac.exact_address = NULL;
404 cac.base_address = NULL;
406 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
407 &compare_address_it, &cac);
409 if (cac.exact_address == NULL)
410 return cac.base_address;
411 return cac.exact_address;
415 static struct ATS_Address *
416 lookup_address (const struct GNUNET_PeerIdentity *peer,
417 const char *plugin_name, const void *plugin_addr,
418 size_t plugin_addr_len, uint32_t session_id,
419 const struct GNUNET_ATS_Information *atsi,
422 struct ATS_Address *aa;
423 struct ATS_Address *old;
425 aa = create_address (peer,
427 plugin_addr, plugin_addr_len,
430 /* Get existing address or address with session == 0 */
431 old = find_address (peer, aa);
437 else if (old->session_id != session_id)
446 GAS_addresses_add (const struct GNUNET_PeerIdentity *peer,
447 const char *plugin_name, const void *plugin_addr,
448 size_t plugin_addr_len, uint32_t session_id,
449 const struct GNUNET_ATS_Information *atsi,
452 struct ATS_Address *aa;
453 struct ATS_Address *old;
454 unsigned int ats_res;
456 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
457 "Received `%s' for peer `%s'\n",
461 if (GNUNET_NO == handle->running)
464 GNUNET_assert (NULL != handle->addresses);
466 aa = create_address (peer,
468 plugin_addr, plugin_addr_len,
470 if (atsi_count != (ats_res = disassemble_ats_information(atsi, atsi_count, aa)))
472 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
473 "While adding address: had %u ATS elements to add, could only add %u\n",
474 atsi_count, ats_res);
477 /* Get existing address or address with session == 0 */
478 old = find_address (peer, aa);
481 /* We have a new address */
482 GNUNET_assert (GNUNET_OK ==
483 GNUNET_CONTAINER_multihashmap_put (handle->addresses,
484 &peer->hashPubKey, aa,
485 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
486 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Added new address for peer `%s' session id %u, %p\n",
487 GNUNET_i2s (peer), session_id, aa);
488 /* Tell solver about new address */
489 handle->s_add (handle->solver, handle->addresses, aa);
492 GNUNET_free (aa->plugin);
495 if (old->session_id != 0)
497 /* This address and session is already existing */
498 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
499 "Added already existing address for peer `%s' `%s' %p with new session %u\n",
500 GNUNET_i2s (peer), plugin_name, session_id);
505 /* We have an address without an session, update this address */
506 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
507 "Updated existing address for peer `%s' %p with new session %u\n",
508 GNUNET_i2s (peer), old, session_id);
509 old->session_id = session_id;
510 if (atsi_count != (ats_res = disassemble_ats_information(atsi, atsi_count, old)))
512 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
513 "While updating address: had %u ATS elements to add, could only add %u\n",
514 atsi_count, ats_res);
517 handle->s_update (handle->solver, handle->addresses, old);
522 GAS_addresses_update (const struct GNUNET_PeerIdentity *peer,
523 const char *plugin_name, const void *plugin_addr,
524 size_t plugin_addr_len, uint32_t session_id,
525 const struct GNUNET_ATS_Information *atsi,
528 struct ATS_Address *aa;
531 if (GNUNET_NO == handle->running)
534 GNUNET_assert (NULL != handle->addresses);
536 /* Get existing address */
537 aa = lookup_address (peer, plugin_name, plugin_addr, plugin_addr_len,
538 session_id, atsi, atsi_count);
541 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n",
542 GNUNET_i2s (peer), plugin_name, session_id);
547 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
548 "Received `%s' for peer `%s' address \n",
550 GNUNET_i2s (peer), aa);
552 if (atsi_count != (ats_res = disassemble_ats_information (atsi, atsi_count, aa)))
554 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
555 "While adding address: had %u ATS elements to add, could only add %u\n",
556 atsi_count, ats_res);
558 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
559 "Updated %u ATS elements for address %p\n",
562 /* Tell solver about update */
563 handle->s_update (handle->solver, handle->addresses, aa);
570 * If session != 0, just the session is deleted, the address itself still exists
571 * If session == 0, remove full address
572 * If session == 0 and addrlen == 0, destroy inbound address
576 * @param value the 'struct ATS_Address'
577 * @return GNUNET_OK (continue to iterate)
580 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
582 const struct ATS_Address *info = cls;
583 struct ATS_Address *aa = value;
586 memcmp (&aa->peer, &info->peer,
587 sizeof (struct GNUNET_PeerIdentity)));
588 /* session == 0, remove full address */
589 if ((info->session_id == 0) && (0 == strcmp (info->plugin, aa->plugin)) &&
590 (aa->addr_len == info->addr_len) &&
591 (0 == memcmp (info->addr, aa->addr, aa->addr_len)))
594 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
595 "Deleting address for peer `%s': `%s' %u\n",
596 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
598 destroy_address (aa);
599 // FIXME if (GNUNET_YES == destroy_address (aa))recalculate_assigned_bw ();
602 /* session != 0, just remove session */
603 if (aa->session_id != info->session_id)
604 return GNUNET_OK; /* irrelevant */
605 if (aa->session_id != 0)
606 GNUNET_break (0 == strcmp (info->plugin, aa->plugin));
608 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
609 "Deleting session for peer `%s': `%s' %u\n",
610 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
613 if (GNUNET_YES == aa->active)
615 aa->active = GNUNET_NO;
616 //FIXME recalculate_assigned_bw ();
619 /* session == 0 and addrlen == 0 : destroy address */
620 if (aa->addr_len == 0)
622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
623 "Deleting session and address for peer `%s': `%s' %u\n",
624 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
625 (void) destroy_address (aa);
629 /* session was set to 0, update address */
631 if (handle->ats_mode == MODE_MLP)
632 GAS_mlp_address_update (handle->solver, handle->addresses, aa);
641 GAS_addresses_destroy (const struct GNUNET_PeerIdentity *peer,
642 const char *plugin_name, const void *plugin_addr,
643 size_t plugin_addr_len, uint32_t session_id)
645 struct ATS_Address *aa;
646 struct ATS_Address *old;
648 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
649 "Received `%s' for peer `%s'\n",
653 if (GNUNET_NO == handle->running)
656 /* Get existing address */
657 old = lookup_address (peer, plugin_name, plugin_addr, plugin_addr_len,
658 session_id, NULL, 0);
661 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
662 GNUNET_i2s (peer), plugin_name, session_id);
666 GNUNET_break (0 < strlen (plugin_name));
667 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
668 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
669 &destroy_by_session_id, aa);
675 GAS_addresses_in_use (const struct GNUNET_PeerIdentity *peer,
676 const char *plugin_name, const void *plugin_addr,
677 size_t plugin_addr_len, uint32_t session_id, int in_use)
679 struct ATS_Address *old;
681 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
682 "Received `%s' for peer `%s'\n",
686 if (GNUNET_NO == handle->running)
687 return GNUNET_SYSERR;
689 old = lookup_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id, NULL, 0);
692 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
693 "Trying to set unknown address `%s', %s %u %s \n",
695 plugin_name, session_id,
696 (GNUNET_NO == in_use) ? "NO" : "YES");
698 return GNUNET_SYSERR;
700 if (old->used == in_use)
703 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
704 "Address in use called multiple times for peer `%s': %s -> %s \n",
706 (GNUNET_NO == old->used) ? "NO" : "YES",
707 (GNUNET_NO == in_use) ? "NO" : "YES");
708 return GNUNET_SYSERR;
712 /* Tell solver about update */
713 handle->s_update (handle->solver, handle->addresses, old);
720 * Cancel address suggestions for a peer
722 * @param peer the respective peer
725 GAS_addresses_request_address_cancel (const struct GNUNET_PeerIdentity *peer)
727 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
729 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
730 "Received request: `%s' for peer %s\n", "request_address_cancel", GNUNET_i2s (peer));
734 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
741 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
742 "No address requests pending for peer `%s', cannot remove!\n", GNUNET_i2s (peer));
745 GAS_addresses_handle_backoff_reset (peer);
746 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
747 "Removed request pending for peer `%s\n", GNUNET_i2s (peer));
748 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
754 * Add an address suggestions for a peer
756 * @param peer the respective peer
759 GAS_addresses_request_address (const struct GNUNET_PeerIdentity *peer)
761 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
762 struct ATS_Address *aa;
763 struct GNUNET_ATS_Information *ats;
764 unsigned int ats_count;
766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
767 "Received `%s' for peer `%s'\n",
771 if (GNUNET_NO == handle->running)
775 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
776 break; /* already suggesting */
781 cur = GNUNET_malloc (sizeof (struct GAS_Addresses_Suggestion_Requests));
783 GNUNET_CONTAINER_DLL_insert (handle->r_head, handle->r_tail, cur);
786 /* Get prefered address from solver */
787 aa = (struct ATS_Address *) handle->s_get (handle->solver, handle->addresses, peer);
790 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
791 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
795 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
796 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
798 ats_count = assemble_ats_information (aa, &ats);
799 GAS_scheduling_transmit_address_suggestion (peer,
801 aa->addr, aa->addr_len,
807 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
808 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get(), aa->block_interval);
810 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
811 "Address %p ready for suggestion, block interval now %llu \n",
812 aa, aa->block_interval);
819 reset_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
821 struct ATS_Address *aa = value;
823 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
824 "Resetting interval for peer `%s' address %p from %llu to 0\n",
825 GNUNET_i2s (&aa->peer), aa, aa->block_interval);
827 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
828 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
834 GAS_addresses_handle_backoff_reset (const struct GNUNET_PeerIdentity *peer)
836 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
837 "Received `%s' for peer `%s'\n",
841 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses,
849 GAS_addresses_change_preference (const struct GNUNET_PeerIdentity *peer,
850 enum GNUNET_ATS_PreferenceKind kind,
853 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
854 "Received `%s' for peer `%s'\n",
858 if (GNUNET_NO == handle->running)
861 /* Tell solver about update */
862 handle->s_pref (handle->solver, peer, kind, score);
866 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
868 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
869 char * entry_in = NULL;
870 char * entry_out = NULL;
871 char * quota_out_str;
875 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
880 case GNUNET_ATS_NET_UNSPECIFIED:
881 entry_out = "UNSPECIFIED_QUOTA_OUT";
882 entry_in = "UNSPECIFIED_QUOTA_IN";
884 case GNUNET_ATS_NET_LOOPBACK:
885 entry_out = "LOOPBACK_QUOTA_OUT";
886 entry_in = "LOOPBACK_QUOTA_IN";
888 case GNUNET_ATS_NET_LAN:
889 entry_out = "LAN_QUOTA_OUT";
890 entry_in = "LAN_QUOTA_IN";
892 case GNUNET_ATS_NET_WAN:
893 entry_out = "WAN_QUOTA_OUT";
894 entry_in = "WAN_QUOTA_IN";
896 case GNUNET_ATS_NET_WLAN:
897 entry_out = "WLAN_QUOTA_OUT";
898 entry_in = "WLAN_QUOTA_IN";
904 if ((entry_in == NULL) || (entry_out == NULL))
908 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
910 if (0 == strcmp(quota_out_str, BIG_M_STRING) ||
911 (GNUNET_SYSERR == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, &out_dest[c])))
912 out_dest[c] = UINT32_MAX;
914 GNUNET_free (quota_out_str);
915 quota_out_str = NULL;
917 else if (GNUNET_ATS_NET_UNSPECIFIED == quotas[c])
918 out_dest[c] = UINT32_MAX;
920 out_dest[c] = UINT32_MAX;
923 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
925 if (0 == strcmp(quota_in_str, BIG_M_STRING) ||
926 (GNUNET_SYSERR == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
927 in_dest[c] = UINT32_MAX;
929 GNUNET_free (quota_in_str);
932 else if (GNUNET_ATS_NET_UNSPECIFIED == quotas[c])
934 in_dest[c] = UINT32_MAX;
938 in_dest[c] = UINT32_MAX;
940 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loaded quota: %s %u, %s %u\n", entry_in, in_dest[c], entry_out, out_dest[c]);
943 return GNUNET_ATS_NetworkTypeCount;
948 bandwidth_changed_cb (struct ATS_Address *address)
950 struct GAS_Addresses_Suggestion_Requests *cur;
951 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Bandwidth assignment changed for peer %s \n", GNUNET_i2s(&address->peer));
952 struct GNUNET_ATS_Information *ats;
953 unsigned int ats_count;
955 cur = handle->r_head;
958 if (0 == memcmp (&address->peer, &cur->id, sizeof (cur->id)))
959 break; /* we have an address request pending*/
964 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
965 "Nobody is interested in peer `%s' :(\n",GNUNET_i2s (&address->peer));
969 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
970 "Sending bandwidth update for peer `%s'\n",GNUNET_i2s (&address->peer));
972 ats_count = assemble_ats_information (address, &ats);
973 GAS_scheduling_transmit_address_suggestion (&address->peer,
975 address->addr, address->addr_len,
978 address->assigned_bw_out,
979 address->assigned_bw_in);
985 * Initialize address subsystem.
987 * @param cfg configuration to use
988 * @param stats the statistics handle to use
990 struct GAS_Addresses_Handle *
991 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
992 const struct GNUNET_STATISTICS_Handle *stats)
994 struct GAS_Addresses_Handle *ah;
995 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
996 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
997 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1002 ah = GNUNET_malloc (sizeof (struct GAS_Addresses_Handle));
1004 handle->running = GNUNET_NO;
1006 /* Initialize the addresses database */
1007 ah->addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1008 GNUNET_assert (NULL != ah->addresses);
1010 /* Figure out configured solution method */
1011 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1013 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1014 ah->ats_mode = MODE_SIMPLISTIC;
1018 for (c = 0; c < strlen (mode_str); c++)
1019 mode_str[c] = toupper (mode_str[c]);
1020 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1022 ah->ats_mode = MODE_SIMPLISTIC;
1024 else if (0 == strcmp (mode_str, "MLP"))
1026 ah->ats_mode = MODE_MLP;
1028 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1029 ah->ats_mode = MODE_SIMPLISTIC;
1034 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1035 ah->ats_mode = MODE_SIMPLISTIC;
1037 GNUNET_free (mode_str);
1039 /* Start configured solution method */
1040 switch (ah->ats_mode)
1043 /* Init the MLP solver with default values */
1045 ah->ats_mode = MODE_MLP;
1046 ah->s_init = &GAS_mlp_init;
1047 ah->s_add = &GAS_mlp_address_add;
1048 ah->s_update = &GAS_mlp_address_update;
1049 ah->s_get = &GAS_mlp_get_preferred_address;
1050 ah->s_pref = &GAS_mlp_address_change_preference;
1051 ah->s_del = &GAS_mlp_address_delete;
1052 ah->s_done = &GAS_mlp_done;
1058 case MODE_SIMPLISTIC:
1059 /* Init the simplistic solver with default values */
1060 ah->ats_mode = MODE_SIMPLISTIC;
1061 ah->s_init = &GAS_simplistic_init;
1062 ah->s_add = &GAS_simplistic_address_add;
1063 ah->s_update = &GAS_simplistic_address_update;
1064 ah->s_get = &GAS_simplistic_get_preferred_address;
1065 ah->s_pref = &GAS_simplistic_address_change_preference;
1066 ah->s_del = &GAS_simplistic_address_delete;
1067 ah->s_done = &GAS_simplistic_done;
1068 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1075 GNUNET_assert (NULL != ah->s_init);
1076 GNUNET_assert (NULL != ah->s_add);
1077 GNUNET_assert (NULL != ah->s_update);
1078 GNUNET_assert (NULL != ah->s_get);
1079 GNUNET_assert (NULL != ah->s_pref);
1080 GNUNET_assert (NULL != ah->s_del);
1081 GNUNET_assert (NULL != ah->s_done);
1083 quota_count = load_quotas(cfg, quotas_in, quotas_out, GNUNET_ATS_NetworkTypeCount);
1085 ah->solver = ah->s_init (cfg, stats, quotas, quotas_in, quotas_out, quota_count, &bandwidth_changed_cb);
1086 if (NULL == ah->solver)
1088 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize solver!\n");
1093 /* up and running */
1094 ah->running = GNUNET_YES;
1100 * Free memory of address.
1103 * @param key peer identity (unused)
1104 * @param value the 'struct ATS_Address' to free
1105 * @return GNUNET_OK (continue to iterate)
1108 free_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1110 struct ATS_Address *aa = value;
1112 destroy_address (aa);
1118 GAS_addresses_destroy_all ()
1120 if (GNUNET_NO == handle->running)
1123 if (handle->addresses != NULL)
1124 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &free_address_it, NULL);
1129 * Shutdown address subsystem.
1132 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
1134 struct GAS_Addresses_Suggestion_Requests *cur;
1136 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1137 "Shutting down addresses\n");
1138 GNUNET_assert (NULL != handle);
1139 GAS_addresses_destroy_all ();
1140 handle->running = GNUNET_NO;
1141 GNUNET_CONTAINER_multihashmap_destroy (handle->addresses);
1142 handle->addresses = NULL;
1143 while (NULL != (cur = handle->r_head))
1145 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1148 handle->s_done (handle->solver);
1149 GNUNET_free (handle);
1150 /* Stop configured solution method */
1154 struct PeerIteratorContext
1156 GNUNET_ATS_Peer_Iterator it;
1158 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1163 const struct GNUNET_HashCode * key,
1166 struct PeerIteratorContext *ip_ctx = cls;
1167 struct GNUNET_PeerIdentity tmp;
1169 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1171 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1172 tmp.hashPubKey = (*key);
1173 ip_ctx->it (ip_ctx->it_cls, &tmp);
1180 * Return all peers currently known to ATS
1182 * @param p_it the iterator to call for every peer, callbach with id == NULL
1184 * @param p_it_cls the closure for the iterator
1187 GAS_addresses_iterate_peers (GNUNET_ATS_Peer_Iterator p_it, void *p_it_cls)
1189 struct PeerIteratorContext ip_ctx;
1194 GNUNET_assert (NULL != handle->addresses);
1196 size = GNUNET_CONTAINER_multihashmap_size(handle->addresses);
1200 ip_ctx.it_cls = p_it_cls;
1201 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1202 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &peer_it, &ip_ctx);
1203 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1205 p_it (p_it_cls, NULL);
1208 struct PeerInfoIteratorContext
1210 GNUNET_ATS_PeerInfo_Iterator it;
1216 peerinfo_it (void *cls,
1217 const struct GNUNET_HashCode * key,
1220 struct PeerInfoIteratorContext *pi_ctx = cls;
1221 struct ATS_Address *addr = (struct ATS_Address *) value;
1222 struct GNUNET_ATS_Information *ats;
1225 if (NULL != pi_ctx->it)
1227 ats_count = assemble_ats_information (addr, &ats);
1229 pi_ctx->it (pi_ctx->it_cls,
1232 addr->addr, addr->addr_len,
1235 addr->assigned_bw_out,
1236 addr->assigned_bw_in);
1244 * Return all peers currently known to ATS
1246 * @param peer the respective peer
1247 * @param pi_it the iterator to call for every peer
1248 * @param pi_it_cls the closure for the iterator
1251 GAS_addresses_get_peer_info (const struct GNUNET_PeerIdentity *peer, GNUNET_ATS_PeerInfo_Iterator pi_it, void *pi_it_cls)
1253 struct PeerInfoIteratorContext pi_ctx;
1254 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1255 GNUNET_assert (NULL != peer);
1256 GNUNET_assert (NULL != handle->addresses);
1258 return; /* does not make sense without callback */
1260 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1262 pi_ctx.it_cls = pi_it_cls;
1264 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1267 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1272 /* end of gnunet-service-ats_addresses.c */