2 This file is part of GNUnet.
3 (C) 2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
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
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
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"
39 #define ATS_BLOCKING_DELTA GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100)
43 * Available ressource assignment modes
50 * Assign each peer an equal amount of bandwidth (bw)
52 * bw_per_peer = bw_total / #active addresses
59 * Solve ressource assignment as an optimization problem
60 * Uses an mixed integer programming solver
65 static struct GNUNET_CONTAINER_MultiHashMap *addresses;
69 static unsigned long long wan_quota_in;
71 static unsigned long long wan_quota_out;
73 static unsigned int active_addr_count;
81 assemble_ats_information (struct ATS_Address *aa, struct GNUNET_ATS_Information **dest)
83 unsigned int ats_count = GNUNET_ATS_PropertyCount - 1;
84 struct GNUNET_ATS_Information *ats = GNUNET_malloc (ats_count * sizeof (struct GNUNET_ATS_Information));
87 ats[0].type = ntohl(GNUNET_ATS_UTILIZATION_UP);
88 ats[0].value = aa->atsp_utilization_out.value__;
89 ats[1].type = ntohl(GNUNET_ATS_UTILIZATION_DOWN);
90 ats[1].value = aa->atsp_utilization_in.value__;
91 ats[2].type = ntohl(GNUNET_ATS_NETWORK_TYPE);
92 ats[2].value = ntohl(aa->atsp_network_type);
93 ats[3].type = ntohl(GNUNET_ATS_QUALITY_NET_DELAY);
94 ats[3].value = ntohl(aa->atsp_latency.rel_value);
95 ats[4].type = ntohl(GNUNET_ATS_QUALITY_NET_DISTANCE);
96 ats[4].value = ntohl(aa->atsp_distance);
97 ats[5].type = ntohl(GNUNET_ATS_COST_WAN);
98 ats[5].value = ntohl (aa->atsp_cost_wan);
99 ats[6].type = ntohl(GNUNET_ATS_COST_LAN);
100 ats[6].value = ntohl (aa->atsp_cost_lan);
101 ats[7].type = ntohl(GNUNET_ATS_COST_WLAN);
102 ats[7].value = ntohl (aa->atsp_cost_wlan);
107 send_bw_notification (struct ATS_Address *aa)
109 struct GNUNET_ATS_Information *ats;
112 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New bandwidth for peer %s is %u/%u\n",
113 GNUNET_i2s (&aa->peer), ntohl (aa->assigned_bw_in.value__),
114 ntohl (aa->assigned_bw_out.value__));
115 ats_count = assemble_ats_information (aa, &ats);
117 GAS_scheduling_transmit_address_suggestion (&aa->peer, aa->plugin, aa->addr,
118 aa->addr_len, aa->session_id,
122 GAS_reservations_set_bandwidth (&aa->peer, aa->assigned_bw_in);
123 GAS_performance_notify_all_clients (&aa->peer, aa->plugin, aa->addr, aa->addr_len,
125 ats, ats_count, aa->assigned_bw_out,
131 * Update a bandwidth assignment for a peer. This trivial method currently
132 * simply assigns the same share to all active connections.
136 * @param value the 'struct ATS_Address'
137 * @return GNUNET_OK (continue to iterate)
140 update_bw_simple_it (void *cls, const struct GNUNET_HashCode * key, void *value)
142 struct ATS_Address *aa = value;
144 if (GNUNET_YES != aa->active)
146 GNUNET_assert (active_addr_count > 0);
150 aa->assigned_bw_in.value__ = htonl (wan_quota_in / active_addr_count);
151 aa->assigned_bw_out.value__ = htonl (wan_quota_out / active_addr_count);
153 send_bw_notification (aa);
160 * Some (significant) input changed, recalculate bandwidth assignment
164 recalculate_assigned_bw ()
166 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
167 "Recalculating bandwidth for all active connections\n");
168 GNUNET_STATISTICS_update (GSA_stats, "# bandwidth recalculations performed",
170 GNUNET_STATISTICS_set (GSA_stats, "# active addresses", active_addr_count,
173 GNUNET_CONTAINER_multihashmap_iterate (addresses, &update_bw_simple_it, NULL);
177 * Free the given address
178 * @param addr address to destroy
181 free_address (struct ATS_Address *addr)
183 GNUNET_free_non_null (addr->ats);
184 GNUNET_free (addr->plugin);
189 * Create a ATS_address with the given information
191 * @param plugin_name plugin
192 * @param plugin_addr address
193 * @param plugin_addr_len address length
194 * @param session_id session
195 * @return the ATS_Address
197 static struct ATS_Address *
198 create_address (const struct GNUNET_PeerIdentity *peer,
199 const char *plugin_name,
200 const void *plugin_addr, size_t plugin_addr_len,
203 struct ATS_Address *aa = NULL;
205 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
207 aa->addr_len = plugin_addr_len;
209 memcpy (&aa[1], plugin_addr, plugin_addr_len);
210 aa->plugin = GNUNET_strdup (plugin_name);
211 aa->session_id = session_id;
217 * Destroy the given address.
219 * @param addr address to destroy
220 * @return GNUNET_YES if bandwidth allocations should be recalcualted
223 destroy_address (struct ATS_Address *addr)
228 GNUNET_assert (GNUNET_YES ==
229 GNUNET_CONTAINER_multihashmap_remove (addresses,
230 &addr->peer.hashPubKey,
234 if (ats_mode == MODE_MLP)
235 GAS_mlp_address_delete (solver, addresses, addr);
238 if (GNUNET_YES == addr->active)
241 addr->active = GNUNET_NO;
249 struct CompareAddressContext
251 const struct ATS_Address *search;
253 /* exact_address != NULL if address and session is equal */
254 struct ATS_Address *exact_address;
255 /* exact_address != NULL if address and session is 0 */
256 struct ATS_Address *base_address;
261 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
263 struct CompareAddressContext *cac = cls;
264 struct ATS_Address *aa = value;
266 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Comparing peer %4s: address length %u session %u <-> address length %u session %u\n",
268 aa->addr_len, aa->session_id,
269 cac->search->addr_len, cac->search->session_id);
271 /* Find an matching exact address:
274 * aa->addr_len == cac->search->addr_len
275 * aa->plugin == cac->search->plugin
276 * aa->addr == cac->search->addr
277 * aa->session == cac->search->session
279 * return as exact address
281 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
283 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
284 cac->exact_address = aa;
287 /* Find an matching base address:
291 * aa->session_id == 0
294 * aa->addr_len == cac->search->addr_len
295 * aa->plugin == cac->search->plugin
296 * aa->addr == cac->search->addr
298 * return as base address
300 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
302 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
303 cac->base_address = aa;
306 /* Find an matching exact address based on session:
310 * cac->search->addr_len == 0
313 * aa->plugin == cac->search->plugin
314 * aa->session_id == cac->search->session_id
316 * return as exact address
318 if (0 == cac->search->addr_len)
320 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
321 cac->exact_address = aa;
324 if (cac->exact_address == NULL)
325 return GNUNET_YES; /* Continue iteration to find exact address */
327 return GNUNET_NO; /* Stop iteration since we have an exact address */
332 * Find an existing equivalent address record.
333 * Compares by peer identity and network address OR by session ID
334 * (one of the two must match).
336 * @param peer peer to lookup addresses for
337 * @param addr existing address record
338 * @return existing address record, NULL for none
341 find_address (const struct GNUNET_PeerIdentity *peer,
342 const struct ATS_Address *addr)
344 struct CompareAddressContext cac;
346 cac.exact_address = NULL;
347 cac.base_address = NULL;
349 GNUNET_CONTAINER_multihashmap_get_multiple (addresses, &peer->hashPubKey,
350 &compare_address_it, &cac);
353 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
354 "Found exact address: %s base address: %s\n",
355 (cac.exact_address != NULL) ? "YES" : "NO",
356 (cac.base_address != NULL) ? "YES" : "NO");
358 if (cac.exact_address == NULL)
359 return cac.base_address;
360 return cac.exact_address;
364 static struct ATS_Address *
365 lookup_address (const struct GNUNET_PeerIdentity *peer,
366 const char *plugin_name, const void *plugin_addr,
367 size_t plugin_addr_len, uint32_t session_id,
368 const struct GNUNET_ATS_Information *atsi,
371 struct ATS_Address *aa;
372 struct ATS_Address *old;
374 aa = create_address (peer,
376 plugin_addr, plugin_addr_len,
379 aa->mlp_information = NULL;
380 aa->ats = GNUNET_malloc (atsi_count * sizeof (struct GNUNET_ATS_Information));
381 aa->ats_count = atsi_count;
382 memcpy (aa->ats, atsi, atsi_count * sizeof (struct GNUNET_ATS_Information));
384 /* Get existing address or address with session == 0 */
385 old = find_address (peer, aa);
391 else if (old->session_id != session_id)
401 compare_address_session_it (void *cls, const struct GNUNET_HashCode * key, void *value)
403 struct CompareAddressContext *cac = cls;
404 struct ATS_Address *aa = value;
406 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
408 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
410 cac->exact_address = aa;
419 * Find an existing equivalent address record.
420 * Compares by peer identity and network address AND by session ID
421 * (one of the two must match).
423 * @param peer peer to lookup addresses for
424 * @param addr existing address record
425 * @return existing address record, NULL for none
427 static struct ATS_Address *
428 find_exact_address (const struct GNUNET_PeerIdentity *peer,
429 const struct ATS_Address *addr)
431 struct CompareAddressContext cac;
433 cac.exact_address = NULL;
435 GNUNET_CONTAINER_multihashmap_get_multiple (addresses, &peer->hashPubKey,
436 &compare_address_session_it, &cac);
437 return cac.exact_address;
443 GAS_addresses_add (const struct GNUNET_PeerIdentity *peer,
444 const char *plugin_name, const void *plugin_addr,
445 size_t plugin_addr_len, uint32_t session_id,
446 const struct GNUNET_ATS_Information *atsi,
449 struct ATS_Address *aa;
450 struct ATS_Address *old;
452 if (GNUNET_NO == running)
455 GNUNET_assert (NULL != addresses);
457 aa = create_address (peer,
459 plugin_addr, plugin_addr_len,
462 aa->mlp_information = NULL;
463 aa->ats = GNUNET_malloc (atsi_count * sizeof (struct GNUNET_ATS_Information));
464 aa->ats_count = atsi_count;
465 memcpy (aa->ats, atsi, atsi_count * sizeof (struct GNUNET_ATS_Information));
467 /* Get existing address or address with session == 0 */
468 old = find_address (peer, aa);
471 /* We have a new address */
472 GNUNET_assert (GNUNET_OK ==
473 GNUNET_CONTAINER_multihashmap_put (addresses,
474 &peer->hashPubKey, aa,
475 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
476 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Added new address for peer `%s' session id %u, %p\n",
477 GNUNET_i2s (peer), session_id, aa);
481 if (old->session_id == 0)
483 /* We have a base address with out an session, update this address */
484 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
485 "Updated existing address for peer `%s' %p with new session %u\n",
486 GNUNET_i2s (peer), old, session_id);
487 GNUNET_free_non_null (old->ats);
488 old->session_id = session_id;
492 old->ats_count = aa->ats_count;
493 GNUNET_free (aa->plugin);
498 /* This address and session is already existing */
499 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
500 "Added already existing address for peer `%s' `%s' %p with new session %u\n",
501 GNUNET_i2s (peer), plugin_name, session_id);
507 GAS_addresses_update (const struct GNUNET_PeerIdentity *peer,
508 const char *plugin_name, const void *plugin_addr,
509 size_t plugin_addr_len, uint32_t session_id,
510 const struct GNUNET_ATS_Information *atsi,
513 struct ATS_Address *old;
516 if (GNUNET_NO == running)
519 GNUNET_assert (NULL != addresses);
521 /* Get existing address */
522 old = lookup_address (peer, plugin_name, plugin_addr, plugin_addr_len,
523 session_id, atsi, atsi_count);
526 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n",
527 GNUNET_i2s (peer), plugin_name, session_id);
532 for (i = 0; i < atsi_count; i++)
533 switch (ntohl (atsi[i].type))
535 case GNUNET_ATS_UTILIZATION_UP:
536 old->atsp_utilization_out.value__ = atsi[i].value;
538 case GNUNET_ATS_UTILIZATION_DOWN:
539 old->atsp_utilization_in.value__ = atsi[i].value;
541 case GNUNET_ATS_QUALITY_NET_DELAY:
542 old->atsp_latency.rel_value = ntohl (atsi[i].value);
544 case GNUNET_ATS_QUALITY_NET_DISTANCE:
545 old->atsp_distance = ntohl (atsi[i].value);
547 case GNUNET_ATS_COST_WAN:
548 old->atsp_cost_wan = ntohl (atsi[i].value);
550 case GNUNET_ATS_COST_LAN:
551 old->atsp_cost_lan = ntohl (atsi[i].value);
553 case GNUNET_ATS_COST_WLAN:
554 old->atsp_cost_wlan = ntohl (atsi[i].value);
556 case GNUNET_ATS_NETWORK_TYPE:
557 old->atsp_network_type = ntohl (atsi[i].value);
561 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
562 "Received unsupported ATS type %u\n", ntohl (atsi[i].type));
567 if (ats_mode == MODE_MLP)
568 GAS_mlp_address_update (solver, addresses, old);
576 * If session != 0, just the session is deleted, the address itself still exists
577 * If session == 0, remove full address
578 * If session == 0 and addrlen == 0, destroy inbound address
582 * @param value the 'struct ATS_Address'
583 * @return GNUNET_OK (continue to iterate)
586 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
588 const struct ATS_Address *info = cls;
589 struct ATS_Address *aa = value;
592 memcmp (&aa->peer, &info->peer,
593 sizeof (struct GNUNET_PeerIdentity)));
594 /* session == 0, remove full address */
595 if ((info->session_id == 0) && (0 == strcmp (info->plugin, aa->plugin)) &&
596 (aa->addr_len == info->addr_len) &&
597 (0 == memcmp (info->addr, aa->addr, aa->addr_len)))
600 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
601 "Deleting address for peer `%s': `%s' %u\n",
602 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
604 if (GNUNET_YES == destroy_address (aa))
605 recalculate_assigned_bw ();
608 /* session != 0, just remove session */
609 if (aa->session_id != info->session_id)
610 return GNUNET_OK; /* irrelevant */
611 if (aa->session_id != 0)
612 GNUNET_break (0 == strcmp (info->plugin, aa->plugin));
614 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
615 "Deleting session for peer `%s': `%s' %u\n",
616 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
619 if (GNUNET_YES == aa->active)
621 aa->active = GNUNET_NO;
623 recalculate_assigned_bw ();
626 /* session == 0 and addrlen == 0 : destroy address */
627 if (aa->addr_len == 0)
629 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
630 "Deleting session and address for peer `%s': `%s' %u\n",
631 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
632 (void) destroy_address (aa);
636 /* session was set to 0, update address */
638 if (ats_mode == MODE_MLP)
639 GAS_mlp_address_update (solver, addresses, aa);
648 GAS_addresses_destroy (const struct GNUNET_PeerIdentity *peer,
649 const char *plugin_name, const void *plugin_addr,
650 size_t plugin_addr_len, uint32_t session_id)
652 struct ATS_Address *aa;
653 struct ATS_Address *old;
655 if (GNUNET_NO == running)
658 /* Get existing address */
659 old = lookup_address (peer, plugin_name, plugin_addr, plugin_addr_len,
660 session_id, NULL, 0);
663 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
664 GNUNET_i2s (peer), plugin_name, session_id);
669 GNUNET_break (0 < strlen (plugin_name));
670 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
672 GNUNET_CONTAINER_multihashmap_get_multiple (addresses, &peer->hashPubKey,
673 &destroy_by_session_id, aa);
680 * Find a "good" address to use for a peer. If we already have an existing
681 * address, we stick to it. Otherwise, we pick by lowest distance and then
684 * @param cls the 'struct ATS_Address**' where we store the result
686 * @param value another 'struct ATS_Address*' to consider using
687 * @return GNUNET_OK (continue to iterate)
690 find_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
692 struct ATS_Address **ap = cls;
693 struct ATS_Address *aa = (struct ATS_Address *) value;
694 struct ATS_Address *ab = *ap;
695 struct GNUNET_TIME_Absolute now;
697 now = GNUNET_TIME_absolute_get();
699 if (aa->blocked_until.abs_value == GNUNET_TIME_absolute_max (now, aa->blocked_until).abs_value)
701 /* This address is blocked for suggestion */
702 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
703 "Address %p blocked for suggestion for %llu ms \n",
705 GNUNET_TIME_absolute_get_difference(now, aa->blocked_until).rel_value);
709 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
710 aa->blocked_until = GNUNET_TIME_absolute_add (now, aa->block_interval);
712 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
713 "Address %p ready for suggestion, block interval now %llu \n", aa, aa->block_interval);
715 /* FIXME this is a hack */
720 if ((0 == strcmp (ab->plugin, "tcp")) &&
721 (0 == strcmp (aa->plugin, "tcp")))
723 if ((0 != ab->addr_len) &&
726 /* saved address was an outbound address, but we have an inbound address */
730 if (0 == ab->addr_len)
732 /* saved address was an inbound address, so do not overwrite */
737 /* FIXME end of hack */
744 if ((ntohl (ab->assigned_bw_in.value__) == 0) &&
745 (ntohl (aa->assigned_bw_in.value__) > 0))
747 /* stick to existing connection */
751 if (ab->atsp_distance > aa->atsp_distance)
753 /* user shorter distance */
757 if (ab->atsp_latency.rel_value > aa->atsp_latency.rel_value)
759 /* user lower latency */
769 GAS_addresses_in_use (const struct GNUNET_PeerIdentity *peer,
770 const char *plugin_name, const void *plugin_addr,
771 size_t plugin_addr_len, uint32_t session_id, int in_use)
774 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
775 "Received `%s' message for peer `%s': %i\n", "ADDRESS_IN_USE",
776 GNUNET_i2s (peer), in_use);
779 struct ATS_Address *old;
781 if (GNUNET_NO == running)
782 return GNUNET_SYSERR;
784 old = lookup_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id, NULL, 0);
787 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
788 "Trying to set unknown address `%s', %s %u %s \n",
790 plugin_name, session_id,
791 (GNUNET_NO == in_use) ? "NO" : "YES");
793 return GNUNET_SYSERR;
795 if (old->used == in_use)
798 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
799 "Address in use called multiple times for peer `%s': %s -> %s \n",
801 (GNUNET_NO == old->used) ? "NO" : "YES",
802 (GNUNET_NO == in_use) ? "NO" : "YES");
803 return GNUNET_SYSERR;
807 if (ats_mode == MODE_MLP)
808 GAS_mlp_address_update (solver, addresses, old);
815 request_address_mlp (const struct GNUNET_PeerIdentity *peer)
817 struct ATS_Address *aa;
821 /* Get preferred address from MODE_MLP */
822 struct ATS_PreferedAddress * paddr = NULL;
823 paddr = GAS_mlp_get_preferred_address (mlp, addresses, peer);
825 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(paddr->bandwidth_out);
826 /* FIXME use bw in value */
827 paddr->bandwidth_in = paddr->bandwidth_out;
828 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init (paddr->bandwidth_in);
834 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
835 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
838 if (aa->active == GNUNET_NO)
840 aa->active = GNUNET_YES;
843 send_bw_notification (aa);
847 /* just to be sure... */
848 GAS_scheduling_transmit_address_suggestion (peer, aa->plugin, aa->addr,
849 aa->addr_len, aa->session_id,
850 aa->ats, aa->ats_count,
859 request_address_simple (const struct GNUNET_PeerIdentity *peer)
861 struct ATS_Address *aa;
864 /* Get address with: stick to current address, lower distance, lower latency */
865 GNUNET_CONTAINER_multihashmap_get_multiple (addresses, &peer->hashPubKey,
866 &find_address_it, &aa);
869 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
870 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
874 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
875 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
877 if (aa->active == GNUNET_NO)
879 aa->active = GNUNET_YES;
881 if (ats_mode == MODE_SIMPLISTIC)
883 recalculate_assigned_bw ();
888 /* just to be sure... */
889 GAS_scheduling_transmit_address_suggestion (peer, aa->plugin, aa->addr,
890 aa->addr_len, aa->session_id,
891 aa->ats, aa->ats_count,
899 GAS_addresses_request_address (const struct GNUNET_PeerIdentity *peer)
901 if (GNUNET_NO == running)
904 if (ats_mode == MODE_SIMPLISTIC)
906 request_address_simple (peer);
908 if (ats_mode == MODE_MLP)
910 request_address_mlp(peer);
916 reset_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
918 struct ATS_Address *aa = value;
920 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
921 "Resetting interval for peer `%s' address %p from %llu to 0\n", GNUNET_i2s (&aa->peer), aa, aa->block_interval);
923 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
924 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
930 GAS_addresses_handle_backoff_reset (const struct GNUNET_PeerIdentity *peer)
932 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (addresses,
940 // FIXME: this function should likely end up in the LP-subsystem and
941 // not with 'addresses' in the future...
943 GAS_addresses_change_preference (const struct GNUNET_PeerIdentity *peer,
944 enum GNUNET_ATS_PreferenceKind kind,
947 if (GNUNET_NO == running)
950 if (ats_mode == MODE_MLP)
951 GAS_mlp_address_change_preference (solver, peer, kind, score);
958 * Initialize address subsystem.
960 * @param cfg configuration to use
961 * @param stats the statistics handle to use
964 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
965 const struct GNUNET_STATISTICS_Handle *stats)
968 char *quota_wan_in_str;
969 char *quota_wan_out_str;
973 /* Initialize the system with configuration values */
974 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", "WAN_QUOTA_IN", "a_wan_in_str))
976 if (0 == strcmp(quota_wan_in_str, "unlimited") ||
977 (GNUNET_SYSERR == GNUNET_STRINGS_fancy_size_to_bytes (quota_wan_in_str, &wan_quota_in)))
978 wan_quota_in = (UINT32_MAX) /10;
980 GNUNET_free (quota_wan_in_str);
981 quota_wan_in_str = NULL;
985 wan_quota_in = (UINT32_MAX) /10;
988 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", "WAN_QUOTA_OUT", "a_wan_out_str))
990 if (0 == strcmp(quota_wan_out_str, "unlimited") ||
991 (GNUNET_SYSERR == GNUNET_STRINGS_fancy_size_to_bytes (quota_wan_out_str, &wan_quota_out)))
992 wan_quota_out = (UINT32_MAX) /10;
994 GNUNET_free (quota_wan_out_str);
995 quota_wan_out_str = NULL;
999 wan_quota_out = (UINT32_MAX) /10;
1002 /* Initialize the addresses database */
1003 addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1004 GNUNET_assert (NULL != addresses);
1006 /* Figure out configured solution method */
1007 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1009 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1010 ats_mode = MODE_SIMPLISTIC;
1014 for (c = 0; c < strlen (mode_str); c++)
1015 mode_str[c] = toupper (mode_str[c]);
1016 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1018 ats_mode = MODE_SIMPLISTIC;
1020 else if (0 == strcmp (mode_str, "MLP"))
1022 ats_mode = MODE_MLP;
1024 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1025 ats_mode = MODE_SIMPLISTIC;
1030 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1031 ats_mode = MODE_SIMPLISTIC;
1035 /* Start configured solution method */
1039 /* Init the MLP solver with default values */
1040 solver = GAS_mlp_init (cfg, stats, MLP_MAX_EXEC_DURATION, MLP_MAX_ITERATIONS);
1043 ats_mode = MODE_MLP;
1044 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "MLP");
1047 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize MLP solver!\n");
1048 case MODE_SIMPLISTIC:
1049 /* Init the simplistic solver with default values */
1050 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1051 solver = GAS_simplistic_init (cfg, stats);
1054 ats_mode = MODE_SIMPLISTIC;
1055 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1060 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize simplistic solver!\n");
1067 /* up and running */
1068 running = GNUNET_YES;
1073 * Free memory of address.
1076 * @param key peer identity (unused)
1077 * @param value the 'struct ATS_Address' to free
1078 * @return GNUNET_OK (continue to iterate)
1081 free_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1083 struct ATS_Address *aa = value;
1085 destroy_address (aa);
1091 GAS_addresses_destroy_all ()
1093 if (GNUNET_NO == running)
1096 if (addresses != NULL)
1097 GNUNET_CONTAINER_multihashmap_iterate (addresses, &free_address_it, NULL);
1098 GNUNET_assert (active_addr_count == 0);
1103 * Shutdown address subsystem.
1106 GAS_addresses_done ()
1108 GAS_addresses_destroy_all ();
1109 running = GNUNET_NO;
1110 GNUNET_CONTAINER_multihashmap_destroy (addresses);
1113 /* Stop configured solution method */
1117 /* Init the MLP solver with default values */
1118 GAS_mlp_done (solver);
1120 case MODE_SIMPLISTIC:
1121 /* Init the simplistic solver with default values */
1122 GAS_simplistic_done (solver);
1129 struct PeerIteratorContext
1131 GNUNET_ATS_Peer_Iterator it;
1133 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1138 const struct GNUNET_HashCode * key,
1141 struct PeerIteratorContext *ip_ctx = cls;
1142 struct GNUNET_PeerIdentity tmp;
1144 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1146 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1147 tmp.hashPubKey = (*key);
1148 ip_ctx->it (ip_ctx->it_cls, &tmp);
1155 * Return all peers currently known to ATS
1157 * @param p_it the iterator to call for every peer, callbach with id == NULL
1159 * @param p_it_cls the closure for the iterator
1162 GAS_addresses_iterate_peers (GNUNET_ATS_Peer_Iterator p_it, void *p_it_cls)
1164 struct PeerIteratorContext ip_ctx;
1169 GNUNET_assert (NULL != addresses);
1171 size = GNUNET_CONTAINER_multihashmap_size(addresses);
1175 ip_ctx.it_cls = p_it_cls;
1176 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1177 GNUNET_CONTAINER_multihashmap_iterate (addresses, &peer_it, &ip_ctx);
1178 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1180 p_it (p_it_cls, NULL);
1183 struct PeerInfoIteratorContext
1185 GNUNET_ATS_PeerInfo_Iterator it;
1191 peerinfo_it (void *cls,
1192 const struct GNUNET_HashCode * key,
1195 struct PeerInfoIteratorContext *pi_ctx = cls;
1196 struct ATS_Address *addr = (struct ATS_Address *) value;
1197 struct GNUNET_ATS_Information *ats;
1200 if (NULL != pi_ctx->it)
1202 ats_count = assemble_ats_information (addr, &ats);
1204 pi_ctx->it (pi_ctx->it_cls,
1207 addr->addr, addr->addr_len,
1210 addr->assigned_bw_out,
1211 addr->assigned_bw_in);
1219 * Return all peers currently known to ATS
1221 * @param peer the respective peer
1222 * @param pi_it the iterator to call for every peer
1223 * @param pi_it_cls the closure for the iterator
1226 GAS_addresses_get_peer_info (const struct GNUNET_PeerIdentity *peer, GNUNET_ATS_PeerInfo_Iterator pi_it, void *pi_it_cls)
1228 struct PeerInfoIteratorContext pi_ctx;
1229 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1230 GNUNET_assert (NULL != peer);
1231 GNUNET_assert (NULL != addresses);
1233 return; /* does not make sense without callback */
1235 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1237 pi_ctx.it_cls = pi_it_cls;
1239 GNUNET_CONTAINER_multihashmap_get_multiple (addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1242 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1247 /* end of gnunet-service-ats_addresses.c */