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_normalization.h"
32 #include "gnunet-service-ats_performance.h"
33 #include "gnunet-service-ats_scheduling.h"
34 #include "gnunet-service-ats_reservations.h"
36 #include "gnunet-service-ats-solver_mlp.h"
38 #include "gnunet-service-ats-solver_proportional.h"
41 * NOTE: Do not change this documentation. This documentation is based on
42 * gnunet.org:/vcs/fsnsg/ats-paper.git/tech-doku/ats-tech-guide.tex
43 * use build_txt.sh to generate plaintext output
45 * 1 ATS addresses : ATS address management
47 * This ATS addresses ("addresses") component manages the addresses known to
48 * ATS service and suggests addresses to transport service when it is
49 * interested in address suggestion for a peer. ATS addresses also
50 * instantiates the bandwidth assignment mechanism (solver), notifies it
51 * about changes to addresses and forwards changes to bandwidth assignments
52 * to transport, depending if transport is interested in this change.
58 * Addresses are added by specifying peer ID, plugin, address, address length
59 * and session, if available. ATS information can be specified if available.
63 * ATS specifies a fix set of networks an address can belong to. For each
64 * network an inbound and outbound quota will be specified. The available
65 * networks and addtional helper varaibles are defined in
66 * gnunet_ats_service.h. At the moment 5 networks are defined:
67 * * GNUNET_ATS_NET_UNSPECIFIED
68 * * GNUNET_ATS_NET_LOOPBACK
69 * * GNUNET_ATS_NET_LAN
70 * * GNUNET_ATS_NET_WAN
71 * * GNUNET_ATS_NET_WLAN
73 * The total number of networks defined is stored in
74 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
75 * initializer for an int array, while GNUNET_ATS_NetworkType is an
76 * initializer for a char array containing a string description of all
81 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
82 * is loaded from ats configuration during initialization. This quota defines
83 * to total amount of inbound and outbound traffic allowed for a specific
84 * network. The configuration values used are in section ats:
85 * * "NETWORK"_QUOTA_IN = <value>
86 * * "NETWORK"_QUOTA_IN = <value>
88 * You can specify quotas by setting the <value> to a:
89 * * unrestricted: unlimited
90 * * number of bytes: e.g. 10240
91 * * fancy value: e.g. 64 Kib
93 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
94 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
96 * * GNUNET_ATS_DefaultBandwidth: 65536
97 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
98 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
100 * Details of loading quotas and default values will be described on
102 * 1.1.4 Preference values
104 * 1.2 Data structures used
106 * Addresse uses struct ATS_Address for each address. The structs are stored
107 * in a linked list and provides a pointer void *solver_information for the
108 * solver to store address specific information. It provides the int values
109 * active which is set to GNUNET_YES if the address is select for transport
110 * use and used, representing that transport service is actively using this
111 * address. Address information are stored in peer, addr, addr_len, plugin.
115 * During initialization a hashmap to store addresses is created. The quotas
116 * for all networks defined for ATS are loaded from configuration. For each
117 * network first the logic will check if the string
118 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
119 * the configured value as a fancy size and if this fails it will try to use
120 * it as a value_number. If no configuration value is found it will assign
121 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
122 * configured solver using configuration "[ats]:MODE". Current solvers are
123 * MODE_SIMPLISTIC, MODE_MLP. Interaction is done using a solver API
128 * * s_init: init the solver with required information
129 * * s_add: add a new address
130 * * s_update: update ATS values or session for an address
131 * * s_get: get prefered address for a peer
132 * * s_del: delete an address
133 * * s_pref: change preference value for a peer
134 * * s_done: shutdown solver
136 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
137 * solver which is called when bandwidth assigned to peer has changed
141 * During shutdown all addresses are freed and the solver told to shutdown
143 * 1.6 Addresses and sessions
145 * Addresses consist of the address itself and a numerical session. When a
146 * new address without a session is added it has no session, so it gets
147 * session 0 assigned. When an address with a session is added and an address
148 * object with session 0 is found, this object is updated with the session
149 * otherwise a new address object with this session assigned is created.
153 * Addresses a1,a2 with session s1, s2 are "exact" if:
154 * (a1 == a2)&&(s1 == s2)
155 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
156 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
158 * 1.7 Address management
160 * Transport service notifies ATS about changes to the addresses known to
163 * 1.7.1 Adding an address
165 * When transport learns a new address it tells ATS and ATS is telling
166 * addresses about it using GAS_address_add. If not known to addresses it
167 * creates a new address object and calls solver's s_add. ATS information are
168 * deserialized and solver is notified about the session and ATS information
171 * 1.7.2 Updating an address
173 * Addresses does an lookup up for the existing address with the given
174 * session. If disassembles included ATS information and notifies the solver
175 * using s_update about the update.
177 * 1.7.3 Deleting an address
179 * Addresses does an lookup for the exact address and session and if removes
180 * this address. If session != 0 the session is set to 0 and the address is
181 * kept. If session == 0, the addresses is removed.
183 * 1.7.4 Requesting an address suggestion
185 * The address client issues a request address message to be notified about
186 * address suggestions for a specific peer. Addresses asks the solver with
187 * s_get. If no address is available, it will not send a response, otherwise
188 * it will respond with the choosen address.
190 * 1.7.5 Address suggestions
192 * Addresses will notify the client automatically on any bandwidth_changed_cb
193 * by the solver if a address suggestion request is pending. If no address is
194 * available it will not respond at all If the client is not interested
195 * anymore, it has to cancel the address suggestion request.
197 * 1.7.6 Suggestions blocks and reset
199 * After suggesting an address it is blocked for ATS_BLOCKING_DELTA sec. to
200 * prevent the client from being thrashed. If the client requires immediately
201 * it can reset this block using GAS_addresses_handle_backoff_reset.
203 * 1.7.7 Marking address in use
205 * The client can notify addresses that it successfully uses an address and
206 * wants this address to be kept by calling GSA_address_in_use. Adresses will
207 * mark the address as used an notify the solver about the use.
209 * 1.7.8 Address lifecycle
212 * * (updated address) || (address in use)
215 * 1.8 Bandwidth assignment
217 * The addresses are used to perform resource allocation operations. ATS
218 * addresses takes care of instantiating the solver configured and notifies
219 * the respective solver about address changes and receives changes to the
220 * bandwidth assignment from the solver. The current bandwidth assignment is
221 * sent to transport. The specific solvers will be described in the specific
224 * 1.9 Changing peer preferences
226 * The bandwidth assigned to a peer can be influenced by setting a preference
227 * for a peer. The prefernce will be given to to the solver with s_pref which
228 * has to take care of the preference value
234 * Available ressource assignment modes
241 * Assign each peer an equal amount of bandwidth (bw)
243 * bw_per_peer = bw_total / #active addresses
250 * Solve ressource assignment as an optimization problem
251 * Uses an mixed integer programming solver
258 * Pending Address suggestion requests
260 struct GAS_Addresses_Suggestion_Requests
265 struct GAS_Addresses_Suggestion_Requests *next;
270 struct GAS_Addresses_Suggestion_Requests *prev;
275 struct GNUNET_PeerIdentity id;
280 * Handle for ATS address component
282 struct GAS_Addresses_Handle
287 struct GNUNET_STATISTICS_Handle *stat;
290 * A multihashmap to store all addresses
292 struct GNUNET_CONTAINER_MultiHashMap *addresses;
295 * Configure WAN quota in
297 unsigned long long wan_quota_in;
300 * Configure WAN quota out
302 unsigned long long wan_quota_out;
305 * Is ATS addresses running
310 * Configured ATS solver
320 * Address suggestion requests DLL head
322 struct GAS_Addresses_Suggestion_Requests *r_head;
325 * Address suggestion requests DLL tail
327 struct GAS_Addresses_Suggestion_Requests *r_tail;
329 /* Solver functions */
334 GAS_solver_init s_init;
337 * Add an address to the solver
339 GAS_solver_address_add s_add;
342 * Update address in solver
344 GAS_solver_address_update s_update;
347 * Get address from solver
349 GAS_solver_get_preferred_address s_get;
352 * Get address from solver
354 GAS_solver_stop_get_preferred_address s_get_stop;
357 * Delete address in solver
359 GAS_solver_address_delete s_del;
362 * Change relative preference for quality in solver
364 GAS_solver_address_change_preference s_pref;
367 * Start a bulk operation
369 GAS_solver_bulk_start s_bulk_start;
372 * Bulk operation done
374 GAS_solver_bulk_stop s_bulk_stop;
379 GAS_solver_done s_done;
384 * Disassemble ATS information and update performance information in address
386 * Updates existing information and adds new information
388 * @param dest destination address
389 * @param update source ATS information
390 * @param update_count number of ATS information
391 * @param delta_dest ats performance information which were updated
392 * including previous value
393 * @param delta_count number of ATS information in the delta
394 * @return GNUNET_YES if address was address updated, GNUNET_NO otherwise
397 disassemble_ats_information (struct ATS_Address *dest,
398 const struct GNUNET_ATS_Information *update,
399 uint32_t update_count,
400 struct GNUNET_ATS_Information **delta_dest,
401 uint32_t *delta_count)
409 struct GNUNET_ATS_Information add_atsi[update_count];
410 struct GNUNET_ATS_Information delta_atsi[update_count];
411 struct GNUNET_ATS_Information *tmp_atsi;
412 uint32_t add_atsi_count;
413 uint32_t delta_atsi_count;
417 delta_atsi_count = 0;
419 if (0 == update_count)
422 if (NULL == dest->atsi)
424 /* Create performance information */
425 dest->atsi = GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
426 dest->atsi_count = update_count;
427 memcpy (dest->atsi, update, update_count * sizeof (struct GNUNET_ATS_Information));
428 delta_atsi_count = update_count;
429 (*delta_dest) = GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
430 for (c1 = 0; c1 < update_count; c1 ++)
432 (*delta_dest)[c1].type = update[c1].type;
433 (*delta_dest)[c1].value = htonl(GNUNET_ATS_VALUE_UNDEFINED);
435 (*delta_count) = update_count;
439 for (c1 = 0; c1 < update_count; c1++)
441 /* Update existing performance information */
443 for (c2 = 0; c2 < dest->atsi_count; c2++)
445 if (update[c1].type == dest->atsi[c2].type)
447 if (update[c1].value != dest->atsi[c2].value)
449 /* Save previous value in delta */
450 delta_atsi[delta_atsi_count] = dest->atsi[c2];
453 dest->atsi[c2].value = update[c1].value;
460 if (GNUNET_NO == found)
462 add_atsi[add_atsi_count] = update[c1];
464 delta_atsi[delta_atsi_count].type = update[c1].type;
465 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
470 if (add_atsi_count > 0)
472 /* Extend ats performance information */
474 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
475 (sizeof (struct GNUNET_ATS_Information)));
476 memcpy (tmp_atsi, dest->atsi, dest->atsi_count * sizeof (struct GNUNET_ATS_Information));
477 memcpy (&tmp_atsi[dest->atsi_count], add_atsi, add_atsi_count * sizeof (struct GNUNET_ATS_Information));
478 GNUNET_free (dest->atsi);
479 dest->atsi = tmp_atsi;
480 dest->atsi_count = dest->atsi_count + add_atsi_count;
484 if (delta_atsi_count > 0)
487 (*delta_dest) = GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
488 memcpy ((*delta_dest), delta_atsi, delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
489 (*delta_count) = delta_atsi_count;
496 * Free the given address
498 * @param addr address to destroy
501 free_address (struct ATS_Address *addr)
503 GNUNET_free (addr->plugin);
504 GNUNET_free_non_null (addr->atsi);
509 * Create a ATS_address with the given information
512 * @param plugin_name plugin
513 * @param plugin_addr address
514 * @param plugin_addr_len address length
515 * @param session_id session
516 * @return the ATS_Address
518 static struct ATS_Address *
519 create_address (const struct GNUNET_PeerIdentity *peer,
520 const char *plugin_name,
521 const void *plugin_addr, size_t plugin_addr_len,
524 struct ATS_Address *aa = NULL;
528 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
530 aa->addr_len = plugin_addr_len;
532 memcpy (&aa[1], plugin_addr, plugin_addr_len);
533 aa->plugin = GNUNET_strdup (plugin_name);
534 aa->session_id = session_id;
535 aa->active = GNUNET_NO;
536 aa->used = GNUNET_NO;
537 aa->solver_information = NULL;
540 aa->assigned_bw_in = GNUNET_BANDWIDTH_value_init(0);
541 aa->assigned_bw_out = GNUNET_BANDWIDTH_value_init(0);
543 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1 ++)
545 aa->atsin[c1].avg_queue_index = 0;
546 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
547 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
554 struct CompareAddressContext
556 const struct ATS_Address *search;
558 /* exact_address != NULL if address and session is equal */
559 struct ATS_Address *exact_address;
560 /* exact_address != NULL if address and session is 0 */
561 struct ATS_Address *base_address;
567 * @param cls a CompareAddressContext containin the source address
569 * @param value the address to compare with
570 * @return GNUNET_YES to continue, GNUNET_NO if address is founce
574 compare_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
576 struct CompareAddressContext *cac = cls;
577 struct ATS_Address *aa = value;
579 /* Find an matching exact address:
582 * aa->addr_len == cac->search->addr_len
583 * aa->plugin == cac->search->plugin
584 * aa->addr == cac->search->addr
585 * aa->session == cac->search->session
587 * return as exact address
589 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
591 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == cac->search->session_id))
592 cac->exact_address = aa;
595 /* Find an matching base address:
599 * aa->session_id == 0
602 * aa->addr_len == cac->search->addr_len
603 * aa->plugin == cac->search->plugin
604 * aa->addr == cac->search->addr
606 * return as base address
608 if ((aa->addr_len == cac->search->addr_len) && (0 == strcmp (aa->plugin, cac->search->plugin)))
610 if ((0 == memcmp (aa->addr, cac->search->addr, aa->addr_len)) && (aa->session_id == 0))
611 cac->base_address = aa;
614 /* Find an matching exact address based on session:
618 * cac->search->addr_len == 0
621 * aa->plugin == cac->search->plugin
622 * aa->session_id == cac->search->session_id
624 * return as exact address
626 if (0 == cac->search->addr_len)
628 if ((0 == strcmp (aa->plugin, cac->search->plugin)) && (aa->session_id == cac->search->session_id))
629 cac->exact_address = aa;
632 if (cac->exact_address == NULL)
633 return GNUNET_YES; /* Continue iteration to find exact address */
635 return GNUNET_NO; /* Stop iteration since we have an exact address */
640 * Find an existing equivalent address record.
641 * Compares by peer identity and network address OR by session ID
642 * (one of the two must match).
644 * @param handle the address handle
645 * @param peer peer to lookup addresses for
646 * @param addr existing address record
647 * @return existing address record, NULL for none
650 find_equivalent_address (struct GAS_Addresses_Handle *handle,
651 const struct GNUNET_PeerIdentity *peer,
652 const struct ATS_Address *addr)
654 struct CompareAddressContext cac;
656 cac.exact_address = NULL;
657 cac.base_address = NULL;
659 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
660 &compare_address_it, &cac);
662 if (cac.exact_address == NULL)
663 return cac.base_address;
664 return cac.exact_address;
669 * Lookup an ATS address by the address properties and session or return an
670 * equivalent address with a session == 0
672 * @param handle the address handle to use
674 * @param plugin_name transport plugin name
675 * @param plugin_addr plugin address
676 * @param plugin_addr_len length of the plugin address
677 * @param session_id session id, can be 0
678 * @param atsi performance information for this address
679 * @param atsi_count number of performance information contained
680 * @return an ATS_address or NULL
683 static struct ATS_Address *
684 lookup_address (struct GAS_Addresses_Handle *handle,
685 const struct GNUNET_PeerIdentity *peer,
686 const char *plugin_name,
687 const void *plugin_addr,
688 size_t plugin_addr_len,
690 const struct GNUNET_ATS_Information *atsi,
693 struct ATS_Address *aa;
694 struct ATS_Address *ea;
696 aa = create_address (peer,
698 plugin_addr, plugin_addr_len,
701 /* Get existing address or address with session == 0 */
702 ea = find_equivalent_address (handle, peer, aa);
708 else if (ea->session_id != session_id)
716 * Extract an ATS performance info from an address
718 * @param address the address
719 * @param type the type to extract in HBO
720 * @return the value in HBO or GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
723 get_performance_info (struct ATS_Address *address, uint32_t type)
726 GNUNET_assert (NULL != address);
728 if ((NULL == address->atsi) || (0 == address->atsi_count))
729 return GNUNET_ATS_VALUE_UNDEFINED;
731 for (c1 = 0; c1 < address->atsi_count; c1++)
733 if (ntohl(address->atsi[c1].type) == type)
734 return ntohl(address->atsi[c1].value);
736 return GNUNET_ATS_VALUE_UNDEFINED;
743 * Add a new address for a peer.
745 * @param handle the address handle to use
747 * @param plugin_name transport plugin name
748 * @param plugin_addr plugin address
749 * @param plugin_addr_len length of the plugin address
750 * @param session_id session id, can be 0
751 * @param atsi performance information for this address
752 * @param atsi_count number of performance information contained
755 GAS_addresses_add (struct GAS_Addresses_Handle *handle,
756 const struct GNUNET_PeerIdentity *peer,
757 const char *plugin_name, const void *plugin_addr,
758 size_t plugin_addr_len, uint32_t session_id,
759 const struct GNUNET_ATS_Information *atsi,
762 struct ATS_Address *aa;
763 struct ATS_Address *ea;
764 struct GNUNET_ATS_Information *atsi_delta;
765 uint32_t atsi_delta_count;
769 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
770 "Received `%s' for peer `%s'\n",
774 if (GNUNET_NO == handle->running)
777 GNUNET_assert (NULL != handle->addresses);
779 aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len,
782 disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta, &atsi_delta_count);
783 GNUNET_free_non_null (atsi_delta);
784 addr_net = get_performance_info (aa, GNUNET_ATS_NETWORK_TYPE);
785 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
786 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
788 /* Get existing address or address with session == 0 */
789 ea = find_equivalent_address (handle, peer, aa);
792 /* We have a new address */
793 GNUNET_assert (GNUNET_OK ==
794 GNUNET_CONTAINER_multihashmap_put (handle->addresses,
795 &peer->hashPubKey, aa,
796 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Added new address for peer `%s' session id %u, %p\n",
798 GNUNET_i2s (peer), session_id, aa);
799 /* Tell solver about new address */
800 handle->s_bulk_start (handle->solver);
801 GAS_normalization_normalize_property (handle->addresses, aa, atsi, atsi_count);
802 handle->s_bulk_stop (handle->solver);
803 handle->s_add (handle->solver, aa, addr_net);
804 /* Notify performance clients about new address */
805 GAS_performance_notify_all_clients (&aa->peer,
807 aa->addr, aa->addr_len,
809 aa->atsi, aa->atsi_count,
815 GNUNET_free (aa->plugin);
816 GNUNET_free_non_null (aa->atsi);
820 if (ea->session_id != 0)
822 /* This address with the same session is already existing
823 * Should not happen */
824 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
825 "Added already existing address for peer `%s' `%s' %p with new session %u\n",
826 GNUNET_i2s (peer), plugin_name, session_id);
831 /* We have an address without an session, update this address */
833 atsi_delta_count = 0;
834 if (GNUNET_YES == disassemble_ats_information (ea, atsi, atsi_count, &atsi_delta, &atsi_delta_count))
836 GAS_performance_notify_all_clients (&ea->peer,
838 ea->addr, ea->addr_len,
840 ea->atsi, ea->atsi_count,
845 /* Notify solver about update with atsi information and session */
846 handle->s_bulk_start (handle->solver);
847 GAS_normalization_normalize_property (handle->addresses, ea, atsi, atsi_count);
848 handle->s_bulk_stop (handle->solver);
849 handle->s_update (handle->solver, ea, session_id, ea->used, atsi_delta, atsi_delta_count);
850 GNUNET_free_non_null (atsi_delta);
853 ea->session_id = session_id;
854 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
855 "Updated existing address for peer `%s' %p with new session %u\n",
856 GNUNET_i2s (peer), ea, session_id);
861 * Update an address with a session or performance information for a peer.
863 * If an address was added without a session it will be updated with the
866 * @param handle the address handle to use
868 * @param plugin_name transport plugin name
869 * @param plugin_addr plugin address
870 * @param plugin_addr_len length of the plugin address
871 * @param session_id session id, can be 0
872 * @param atsi performance information for this address
873 * @param atsi_count number of performance information contained
876 GAS_addresses_update (struct GAS_Addresses_Handle *handle,
877 const struct GNUNET_PeerIdentity *peer,
878 const char *plugin_name, const void *plugin_addr,
879 size_t plugin_addr_len, uint32_t session_id,
880 const struct GNUNET_ATS_Information *atsi,
883 struct ATS_Address *aa;
884 struct GNUNET_ATS_Information *atsi_delta;
885 uint32_t atsi_delta_count;
886 uint32_t prev_session;
888 if (GNUNET_NO == handle->running)
891 GNUNET_assert (NULL != handle->addresses);
893 /* Get existing address */
894 aa = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
895 session_id, atsi, atsi_count);
898 /* GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n", */
899 /* GNUNET_i2s (peer), plugin_name, session_id); */
900 /* GNUNET_break (0); */
904 if (NULL == aa->solver_information)
906 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Tried to update unknown address for peer `%s' `%s' session id %u\n",
907 GNUNET_i2s (peer), plugin_name, session_id);
911 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
912 "Received `%s' for peer `%s' address \n",
914 GNUNET_i2s (peer), aa);
918 atsi_delta_count = 0;
919 if (GNUNET_YES == disassemble_ats_information (aa, atsi, atsi_count, &atsi_delta, &atsi_delta_count))
921 /* Notify performance clients about updated address */
922 GAS_performance_notify_all_clients (&aa->peer,
924 aa->addr, aa->addr_len,
926 aa->atsi, aa->atsi_count,
930 prev_session = aa->session_id;
931 aa->session_id = session_id;
933 handle->s_bulk_start (handle->solver);
934 GAS_normalization_normalize_property (handle->addresses, aa, atsi, atsi_count);
935 handle->s_bulk_stop (handle->solver);
937 /* Tell solver about update */
938 handle->s_update (handle->solver, aa, prev_session, aa->used, atsi_delta, atsi_delta_count);
939 GNUNET_free_non_null (atsi_delta);
943 struct DestroyContext
945 struct ATS_Address *aa;
947 struct GAS_Addresses_Handle *handle;
950 * GNUNET_NO : full address
951 * GNUNET_YES : just session
960 * If session != 0, just the session is deleted, the address itself still exists
961 * If session == 0, remove full address
962 * If session == 0 and addrlen == 0, destroy inbound address
966 * @param value the 'struct ATS_Address'
967 * @return GNUNET_OK (continue to iterate)
970 destroy_by_session_id (void *cls, const struct GNUNET_HashCode * key, void *value)
972 struct DestroyContext *dc = cls;
973 struct GAS_Addresses_Handle *handle = dc->handle;
974 const struct ATS_Address *des = dc->aa;
975 struct ATS_Address *aa = value;
977 GNUNET_assert (0 == memcmp (&aa->peer, &des->peer,
978 sizeof (struct GNUNET_PeerIdentity)));
981 if (des->session_id == 0)
983 /* Session == 0, remove full address */
984 if ((0 == strcmp (des->plugin, aa->plugin)) &&
985 (aa->addr_len == des->addr_len) &&
986 (0 == memcmp (des->addr, aa->addr, aa->addr_len)))
989 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
990 "Deleting full address for peer `%s' session %u %p\n",
991 GNUNET_i2s (&aa->peer), aa->session_id, aa);
993 /* Notify solver about deletion */
994 GNUNET_assert (GNUNET_YES ==
995 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
996 &aa->peer.hashPubKey, aa));
997 handle->s_del (handle->solver, aa, GNUNET_NO);
999 dc->result = GNUNET_NO;
1000 return GNUNET_OK; /* Continue iteration */
1005 /* Session != 0, just remove session */
1006 if (aa->session_id != des->session_id)
1007 return GNUNET_OK; /* irrelevant */
1009 if ((aa->session_id != 0) &&
1010 (0 != strcmp (des->plugin, aa->plugin)))
1012 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1013 "Different plugins during removal: `%s' vs `%s' \n",
1014 des->plugin, aa->plugin);
1019 if (aa->addr_len == 0)
1021 /* Inbound connection died, delete full address */
1022 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1023 "Deleting inbound address for peer `%s': `%s' session %u\n",
1024 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1026 /* Notify solver about deletion */
1027 GNUNET_assert (GNUNET_YES ==
1028 GNUNET_CONTAINER_multihashmap_remove (handle->addresses,
1029 &aa->peer.hashPubKey, aa));
1030 handle->s_del (handle->solver, aa, GNUNET_NO);
1032 dc->result = GNUNET_NO;
1033 return GNUNET_OK; /* Continue iteration */
1038 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1039 "Deleting session for peer `%s': `%s' %u\n",
1040 GNUNET_i2s (&aa->peer), aa->plugin, aa->session_id);
1041 /* Notify solver to delete session */
1042 handle->s_del (handle->solver, aa, GNUNET_YES);
1052 * Remove an address or just a session for a peer.
1054 * @param handle the address handle to use
1056 * @param plugin_name transport plugin name
1057 * @param plugin_addr plugin address
1058 * @param plugin_addr_len length of the plugin address
1059 * @param session_id session id, can be 0
1062 GAS_addresses_destroy (struct GAS_Addresses_Handle *handle,
1063 const struct GNUNET_PeerIdentity *peer,
1064 const char *plugin_name,
1065 const void *plugin_addr,
1066 size_t plugin_addr_len,
1067 uint32_t session_id)
1069 struct ATS_Address *ea;
1070 struct DestroyContext dc;
1071 if (GNUNET_NO == handle->running)
1074 /* Get existing address */
1075 ea = lookup_address (handle, peer, plugin_name, plugin_addr, plugin_addr_len,
1076 session_id, NULL, 0);
1079 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Tried to destroy unknown address for peer `%s' `%s' session id %u\n",
1080 GNUNET_i2s (peer), plugin_name, session_id);
1084 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1085 "Received `%s' for peer `%s' address %p session %u\n",
1087 GNUNET_i2s (peer), ea, session_id);
1089 GNUNET_break (0 < strlen (plugin_name));
1091 dc.aa = create_address (peer, plugin_name, plugin_addr, plugin_addr_len, session_id);
1093 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey,
1094 &destroy_by_session_id, &dc);
1095 free_address (dc.aa);
1100 * Notification about active use of an address.
1101 * in_use == GNUNET_YES:
1102 * This address is used to maintain an active connection with a peer.
1103 * in_use == GNUNET_NO:
1104 * This address is no longer used to maintain an active connection with a peer.
1106 * Note: can only be called with in_use == GNUNET_NO if called with GNUNET_YES
1109 * @param handle the address handle to use
1111 * @param plugin_name transport plugin name
1112 * @param plugin_addr plugin address
1113 * @param plugin_addr_len length of the plugin address
1114 * @param session_id session id, can be 0
1115 * @param in_use GNUNET_YES if GNUNET_NO
1116 * @return GNUNET_SYSERR on failure (address unknown ...)
1119 GAS_addresses_in_use (struct GAS_Addresses_Handle *handle,
1120 const struct GNUNET_PeerIdentity *peer,
1121 const char *plugin_name,
1122 const void *plugin_addr,
1123 size_t plugin_addr_len,
1124 uint32_t session_id,
1127 struct ATS_Address *ea;
1130 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1131 "Received `%s' for peer `%s'\n",
1135 if (GNUNET_NO == handle->running)
1136 return GNUNET_SYSERR;
1138 ea = lookup_address (handle, peer, plugin_name,
1139 plugin_addr, plugin_addr_len,
1140 session_id, NULL, 0);
1143 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1144 "Trying to set unknown address `%s', %s %u %s \n",
1146 plugin_name, session_id,
1147 (GNUNET_NO == in_use) ? "NO" : "YES");
1149 return GNUNET_SYSERR;
1151 if (ea->used == in_use)
1154 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1155 "Address in use called multiple times for peer `%s': %s -> %s \n",
1157 (GNUNET_NO == ea->used) ? "NO" : "YES",
1158 (GNUNET_NO == in_use) ? "NO" : "YES");
1159 return GNUNET_SYSERR;
1162 /* Tell solver about update */
1163 prev_inuse = ea->used;
1165 handle->s_update (handle->solver, ea, session_id, prev_inuse, NULL, 0);
1173 * Cancel address suggestions for a peer
1175 * @param handle the address handle
1176 * @param peer the peer id
1179 GAS_addresses_request_address_cancel (struct GAS_Addresses_Handle *handle,
1180 const struct GNUNET_PeerIdentity *peer)
1182 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1184 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1185 "Received request: `%s' for peer %s\n", "request_address_cancel", GNUNET_i2s (peer));
1189 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1196 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1197 "No address requests pending for peer `%s', cannot remove!\n", GNUNET_i2s (peer));
1200 handle->s_get_stop (handle->solver, peer);
1201 GAS_addresses_handle_backoff_reset (handle, peer);
1202 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1203 "Removed request pending for peer `%s\n", GNUNET_i2s (peer));
1204 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1210 * Request address suggestions for a peer
1212 * @param handle the address handle
1213 * @param peer the peer id
1216 GAS_addresses_request_address (struct GAS_Addresses_Handle *handle,
1217 const struct GNUNET_PeerIdentity *peer)
1219 struct GAS_Addresses_Suggestion_Requests *cur = handle->r_head;
1220 struct ATS_Address *aa;
1222 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1223 "Received `%s' for peer `%s'\n",
1227 if (GNUNET_NO == handle->running)
1231 if (0 == memcmp (peer, &cur->id, sizeof (cur->id)))
1232 break; /* already suggesting */
1237 cur = GNUNET_malloc (sizeof (struct GAS_Addresses_Suggestion_Requests));
1239 GNUNET_CONTAINER_DLL_insert (handle->r_head, handle->r_tail, cur);
1242 /* Get prefered address from solver */
1243 aa = (struct ATS_Address *) handle->s_get (handle->solver, peer);
1246 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1247 "Cannot suggest address for peer `%s'\n", GNUNET_i2s (peer));
1251 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1252 "Suggesting address %p for peer `%s'\n", aa, GNUNET_i2s (peer));
1254 GAS_scheduling_transmit_address_suggestion (peer,
1256 aa->addr, aa->addr_len,
1258 aa->atsi, aa->atsi_count,
1259 aa->assigned_bw_out,
1260 aa->assigned_bw_in);
1262 aa->block_interval = GNUNET_TIME_relative_add (aa->block_interval, ATS_BLOCKING_DELTA);
1263 aa->blocked_until = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get(), aa->block_interval);
1265 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1266 "Address %p ready for suggestion, block interval now %llu \n",
1267 aa, aa->block_interval);
1272 * Iterator to reset address blocking
1274 * @param cls not used
1275 * @param key the peer
1276 * @param value the address to reset
1277 * @return GNUNET_OK to continue
1280 reset_address_it (void *cls, const struct GNUNET_HashCode *key, void *value)
1282 struct ATS_Address *aa = value;
1284 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1285 "Resetting interval for peer `%s' address %p from %llu to 0\n",
1286 GNUNET_i2s (&aa->peer), aa, aa->block_interval);
1288 aa->blocked_until = GNUNET_TIME_UNIT_ZERO_ABS;
1289 aa->block_interval = GNUNET_TIME_UNIT_ZERO;
1295 * Reset suggestion backoff for a peer
1297 * Suggesting addresses is blocked for ATS_BLOCKING_DELTA. Blocking can be
1298 * reset using this function
1300 * @param handle the address handle
1301 * @param peer the peer id
1304 GAS_addresses_handle_backoff_reset (struct GAS_Addresses_Handle *handle,
1305 const struct GNUNET_PeerIdentity *peer)
1307 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1308 "Received `%s' for peer `%s'\n",
1312 GNUNET_break (GNUNET_SYSERR != GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses,
1320 * The preference changed for a peer
1322 * @param cls the address handle
1323 * @param peer the peer
1324 * @param kind the ATS kind
1325 * @param pref_rel the new relative preference value
1328 normalized_preference_changed_cb (void *cls,
1329 const struct GNUNET_PeerIdentity *peer,
1330 enum GNUNET_ATS_PreferenceKind kind,
1333 GNUNET_assert (NULL != cls);
1334 struct GAS_Addresses_Handle *handle = cls;
1335 /* Tell solver about update */
1336 handle->s_pref (handle->solver, peer, kind, pref_rel);
1341 * The relative value for a property changed
1343 * @param cls the address handle
1344 * @param peer the peer
1345 * @param type the ATS type
1346 * @param prop_rel the new relative preference value
1349 normalized_property_changed_cb (void *cls,
1350 const struct ATS_Address *peer,
1354 GNUNET_assert (NULL != cls);
1355 //struct GAS_Addresses_Handle *handle = cls;
1356 /* Tell solver about update */
1357 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1358 "Normalized property %s for peer `%s' changed to %.3f \n",
1359 GNUNET_ATS_print_property_type (type),
1360 GNUNET_i2s (&peer->peer),
1366 * Function allowing the solver to obtain normalized preference
1367 * values from solver
1370 * @param id the peer to return the normalized properties for
1371 * @return array of double values with |GNUNET_ATS_PreferenceCount| elements
1374 get_preferences_cb (void *cls, const struct GNUNET_PeerIdentity *id)
1376 return GAS_normalization_get_preferences (id);
1380 * Function allowing the solver to obtain normalized property
1381 * values for an address from solver
1384 * @param id the peer to return the normalized properties for
1385 * @return array of double values with |GNUNET_ATS_QualityPropertiesCount| elements
1388 get_property_cb (void *cls, const struct ATS_Address *address)
1390 return GAS_normalization_get_properties ((struct ATS_Address *) address);
1394 * Change the preference for a peer
1396 * @param handle the address handle
1397 * @param client the client sending this request
1398 * @param peer the peer id
1399 * @param kind the preference kind to change
1400 * @param score_abs the new preference score
1403 GAS_addresses_change_preference (struct GAS_Addresses_Handle *handle,
1405 const struct GNUNET_PeerIdentity *peer,
1406 enum GNUNET_ATS_PreferenceKind kind,
1409 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1410 "Received `%s' for peer `%s' for client %p\n",
1411 "CHANGE PREFERENCE",
1412 GNUNET_i2s (peer), client);
1414 if (GNUNET_NO == handle->running)
1417 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->addresses,
1420 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1421 "Received `%s' for unknown peer `%s' from client %p\n",
1422 "CHANGE PREFERENCE",
1423 GNUNET_i2s (peer), client);
1427 handle->s_bulk_start (handle->solver);
1428 /* Tell normalization about change, normalization will call callback if preference changed */
1429 GAS_normalization_normalize_preference (client, peer, kind, score_abs);
1430 handle->s_bulk_stop (handle->solver);
1435 * Load quotas for networks from configuration
1437 * @param cfg configuration handle
1438 * @param out_dest where to write outbound quotas
1439 * @param in_dest where to write inbound quotas
1440 * @param dest_length length of inbound and outbound arrays
1441 * @return number of networks loaded
1444 load_quotas (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned long long *out_dest, unsigned long long *in_dest, int dest_length)
1446 char *network_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
1447 char * entry_in = NULL;
1448 char * entry_out = NULL;
1449 char * quota_out_str;
1450 char * quota_in_str;
1454 for (c = 0; (c < GNUNET_ATS_NetworkTypeCount) && (c < dest_length); c++)
1458 GNUNET_asprintf (&entry_out, "%s_QUOTA_OUT", network_str[c]);
1459 GNUNET_asprintf (&entry_in, "%s_QUOTA_IN", network_str[c]);
1462 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_out, "a_out_str))
1465 if (0 == strcmp(quota_out_str, GNUNET_ATS_MaxBandwidthString))
1467 out_dest[c] = GNUNET_ATS_MaxBandwidth;
1470 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_out_str, &out_dest[c])))
1472 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_out, &out_dest[c])))
1475 if (GNUNET_NO == res)
1477 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1478 network_str[c], quota_out_str, GNUNET_ATS_DefaultBandwidth);
1479 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1483 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Outbound quota configure for network `%s' is %llu\n"),
1484 network_str[c], out_dest[c]);
1486 GNUNET_free (quota_out_str);
1490 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configured for network `%s', assigning default bandwidth %llu\n"),
1491 network_str[c], GNUNET_ATS_DefaultBandwidth);
1492 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1496 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(cfg, "ats", entry_in, "a_in_str))
1499 if (0 == strcmp(quota_in_str, GNUNET_ATS_MaxBandwidthString))
1501 in_dest[c] = GNUNET_ATS_MaxBandwidth;
1504 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_STRINGS_fancy_size_to_bytes (quota_in_str, &in_dest[c])))
1506 if ((GNUNET_NO == res) && (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (cfg, "ats", entry_in, &in_dest[c])))
1509 if (GNUNET_NO == res)
1511 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Could not load quota for network `%s': `%s', assigning default bandwidth %llu\n"),
1512 network_str[c], quota_in_str, GNUNET_ATS_DefaultBandwidth);
1513 in_dest[c] = GNUNET_ATS_DefaultBandwidth;
1517 GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Inbound quota configured for network `%s' is %llu\n"),
1518 network_str[c], in_dest[c]);
1520 GNUNET_free (quota_in_str);
1524 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("No outbound quota configure for network `%s', assigning default bandwidth %llu\n"),
1525 network_str[c], GNUNET_ATS_DefaultBandwidth);
1526 out_dest[c] = GNUNET_ATS_DefaultBandwidth;
1528 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]);
1529 GNUNET_free (entry_out);
1530 GNUNET_free (entry_in);
1532 return GNUNET_ATS_NetworkTypeCount;
1537 * Callback for solver to notify about assignment changes
1539 * @param cls the GAS_Addresses_Handle
1540 * @param address the address with changes
1543 bandwidth_changed_cb (void *cls, struct ATS_Address *address)
1545 struct GAS_Addresses_Handle *handle = cls;
1546 struct GAS_Addresses_Suggestion_Requests *cur;
1548 GNUNET_assert (handle != NULL);
1549 GNUNET_assert (address != NULL);
1551 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Bandwidth assignment changed for peer %s \n", GNUNET_i2s(&address->peer));
1553 /* Notify performance clients about changes to address */
1554 GAS_performance_notify_all_clients (&address->peer,
1556 address->addr, address->addr_len,
1557 address->session_id,
1558 address->atsi, address->atsi_count,
1559 address->assigned_bw_out,
1560 address->assigned_bw_in);
1561 cur = handle->r_head;
1564 if (0 == memcmp (&address->peer, &cur->id, sizeof (cur->id)))
1565 break; /* we have an address request pending*/
1570 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1571 "Nobody is interested in peer `%s' :(\n",GNUNET_i2s (&address->peer));
1575 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1576 "Sending bandwidth update for peer `%s'\n",GNUNET_i2s (&address->peer));
1578 /* *Notify scheduling clients about suggestion */
1579 GAS_scheduling_transmit_address_suggestion (&address->peer,
1581 address->addr, address->addr_len,
1582 address->session_id,
1583 address->atsi, address->atsi_count,
1584 address->assigned_bw_out,
1585 address->assigned_bw_in);
1590 * Initialize address subsystem. The addresses subsystem manages the addresses
1591 * known and current performance information. It has a solver component
1592 * responsible for the resource allocation. It tells the solver about changes
1593 * and receives updates when the solver changes the ressource allocation.
1595 * @param cfg configuration to use
1596 * @param stats the statistics handle to use
1597 * @return an address handle
1599 struct GAS_Addresses_Handle *
1600 GAS_addresses_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
1601 const struct GNUNET_STATISTICS_Handle *stats)
1603 struct GAS_Addresses_Handle *ah;
1604 int quotas[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkType;
1605 unsigned long long quotas_in[GNUNET_ATS_NetworkTypeCount];
1606 unsigned long long quotas_out[GNUNET_ATS_NetworkTypeCount];
1611 ah = GNUNET_malloc (sizeof (struct GAS_Addresses_Handle));
1612 ah->running = GNUNET_NO;
1614 ah->stat = (struct GNUNET_STATISTICS_Handle *) stats;
1615 /* Initialize the addresses database */
1616 ah->addresses = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
1617 GNUNET_assert (NULL != ah->addresses);
1619 /* Figure out configured solution method */
1620 if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "MODE", &mode_str))
1622 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "No ressource assignment method configured, using simplistic approch\n");
1623 ah->ats_mode = MODE_SIMPLISTIC;
1627 for (c = 0; c < strlen (mode_str); c++)
1628 mode_str[c] = toupper (mode_str[c]);
1629 if (0 == strcmp (mode_str, "SIMPLISTIC"))
1631 ah->ats_mode = MODE_SIMPLISTIC;
1633 else if (0 == strcmp (mode_str, "MLP"))
1635 ah->ats_mode = MODE_MLP;
1637 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Assignment method `%s' configured, but GLPK is not availabe, please install \n", mode_str);
1638 ah->ats_mode = MODE_SIMPLISTIC;
1643 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid ressource assignment method `%s' configured, using simplistic approch\n", mode_str);
1644 ah->ats_mode = MODE_SIMPLISTIC;
1646 GNUNET_free (mode_str);
1648 /* Start configured solution method */
1649 switch (ah->ats_mode)
1652 /* Init the MLP solver with default values */
1654 ah->ats_mode = MODE_MLP;
1655 ah->s_init = &GAS_mlp_init;
1656 ah->s_add = &GAS_mlp_address_add;
1657 ah->s_update = &GAS_mlp_address_update;
1658 ah->s_get = &GAS_mlp_get_preferred_address;
1659 ah->s_get_stop = &GAS_mlp_stop_get_preferred_address;
1660 ah->s_pref = &GAS_mlp_address_change_preference;
1661 ah->s_del = &GAS_mlp_address_delete;
1662 ah->s_bulk_start = &GAS_mlp_bulk_start;
1663 ah->s_bulk_stop = &GAS_mlp_bulk_stop;
1664 ah->s_done = &GAS_mlp_done;
1671 case MODE_SIMPLISTIC:
1672 /* Init the simplistic solver with default values */
1673 ah->ats_mode = MODE_SIMPLISTIC;
1674 ah->s_init = &GAS_proportional_init;
1675 ah->s_add = &GAS_proportional_address_add;
1676 ah->s_update = &GAS_proportional_address_update;
1677 ah->s_get = &GAS_proportional_get_preferred_address;
1678 ah->s_get_stop = &GAS_proportional_stop_get_preferred_address;
1679 ah->s_pref = &GAS_proportional_address_change_preference;
1680 ah->s_del = &GAS_proportional_address_delete;
1681 ah->s_bulk_start = &GAS_proportional_bulk_start;
1682 ah->s_bulk_stop = &GAS_proportional_bulk_stop;
1683 ah->s_done = &GAS_proportional_done;
1684 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ATS started in %s mode\n", "SIMPLISTIC");
1691 GNUNET_assert (NULL != ah->s_init);
1692 GNUNET_assert (NULL != ah->s_add);
1693 GNUNET_assert (NULL != ah->s_update);
1694 GNUNET_assert (NULL != ah->s_get);
1695 GNUNET_assert (NULL != ah->s_get_stop);
1696 GNUNET_assert (NULL != ah->s_pref);
1697 GNUNET_assert (NULL != ah->s_del);
1698 GNUNET_assert (NULL != ah->s_done);
1699 GNUNET_assert (NULL != ah->s_bulk_start);
1700 GNUNET_assert (NULL != ah->s_bulk_stop);
1702 GAS_normalization_start (&normalized_preference_changed_cb, ah,
1703 &normalized_property_changed_cb, ah);
1704 quota_count = load_quotas(cfg, quotas_in, quotas_out, GNUNET_ATS_NetworkTypeCount);
1706 ah->solver = ah->s_init (cfg, stats, ah->addresses,
1707 quotas, quotas_in, quotas_out, quota_count,
1708 &bandwidth_changed_cb, ah,
1709 &get_preferences_cb, NULL,
1710 &get_property_cb, NULL);
1711 if (NULL == ah->solver)
1713 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to initialize solver!\n");
1718 /* up and running */
1719 ah->running = GNUNET_YES;
1725 * Destroy all addresses iterator
1728 * @param key peer identity (unused)
1729 * @param value the 'struct ATS_Address' to free
1730 * @return GNUNET_OK (continue to iterate)
1733 destroy_all_address_it (void *cls, const struct GNUNET_HashCode * key, void *value)
1735 struct GAS_Addresses_Handle *handle = cls;
1736 struct ATS_Address *aa = value;
1739 GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->addresses, key, value));
1741 handle->s_del (handle->solver, aa, GNUNET_NO);
1750 * Remove all addresses
1752 * @param handle the address handle to use
1755 GAS_addresses_destroy_all (struct GAS_Addresses_Handle *handle)
1757 if (GNUNET_NO == handle->running)
1760 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1763 if (handle->addresses != NULL)
1764 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &destroy_all_address_it, handle);
1769 * Shutdown address subsystem.
1771 * @param handle the address handle to shutdown
1774 GAS_addresses_done (struct GAS_Addresses_Handle *handle)
1776 struct GAS_Addresses_Suggestion_Requests *cur;
1778 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1779 "Shutting down addresses\n");
1780 GNUNET_assert (NULL != handle);
1781 GAS_addresses_destroy_all (handle);
1782 handle->running = GNUNET_NO;
1783 GNUNET_CONTAINER_multihashmap_destroy (handle->addresses);
1784 handle->addresses = NULL;
1785 while (NULL != (cur = handle->r_head))
1787 GNUNET_CONTAINER_DLL_remove (handle->r_head, handle->r_tail, cur);
1790 handle->s_done (handle->solver);
1791 GNUNET_free (handle);
1792 /* Stop configured solution method */
1793 GAS_normalization_stop ();
1797 struct PeerIteratorContext
1799 GNUNET_ATS_Peer_Iterator it;
1801 struct GNUNET_CONTAINER_MultiHashMap *peers_returned;
1806 * Iterator to iterate over all peers
1808 * @param cls a PeerIteratorContext
1809 * @param key the peer id
1810 * @param value the ATS_address
1811 * @return GNUNET_OK to continue
1815 const struct GNUNET_HashCode * key,
1818 struct PeerIteratorContext *ip_ctx = cls;
1819 struct GNUNET_PeerIdentity tmp;
1821 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(ip_ctx->peers_returned, key))
1823 GNUNET_CONTAINER_multihashmap_put(ip_ctx->peers_returned, key, NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1824 tmp.hashPubKey = (*key);
1825 ip_ctx->it (ip_ctx->it_cls, &tmp);
1833 * Return information all peers currently known to ATS
1835 * @param handle the address handle to use
1836 * @param p_it the iterator to call for every peer
1837 * @param p_it_cls the closure for the iterator
1840 GAS_addresses_iterate_peers (struct GAS_Addresses_Handle *handle,
1841 GNUNET_ATS_Peer_Iterator p_it,
1844 struct PeerIteratorContext ip_ctx;
1849 GNUNET_assert (NULL != handle->addresses);
1851 size = GNUNET_CONTAINER_multihashmap_size(handle->addresses);
1855 ip_ctx.it_cls = p_it_cls;
1856 ip_ctx.peers_returned = GNUNET_CONTAINER_multihashmap_create (size, GNUNET_NO);
1857 GNUNET_CONTAINER_multihashmap_iterate (handle->addresses, &peer_it, &ip_ctx);
1858 GNUNET_CONTAINER_multihashmap_destroy (ip_ctx.peers_returned);
1860 p_it (p_it_cls, NULL);
1864 struct PeerInfoIteratorContext
1866 GNUNET_ATS_PeerInfo_Iterator it;
1872 * Iterator to iterate over a peer's addresses
1874 * @param cls a PeerInfoIteratorContext
1875 * @param key the peer id
1876 * @param value the ATS_address
1877 * @return GNUNET_OK to continue
1880 peerinfo_it (void *cls,
1881 const struct GNUNET_HashCode * key,
1884 struct PeerInfoIteratorContext *pi_ctx = cls;
1885 struct ATS_Address *addr = (struct ATS_Address *) value;
1887 if (NULL != pi_ctx->it)
1889 pi_ctx->it (pi_ctx->it_cls,
1892 addr->addr, addr->addr_len,
1894 addr->atsi, addr->atsi_count,
1895 addr->assigned_bw_out,
1896 addr->assigned_bw_in);
1903 * Return information all peers currently known to ATS
1905 * @param handle the address handle to use
1906 * @param peer the respective peer
1907 * @param pi_it the iterator to call for every peer
1908 * @param pi_it_cls the closure for the iterator
1911 GAS_addresses_get_peer_info (struct GAS_Addresses_Handle *handle,
1912 const struct GNUNET_PeerIdentity *peer,
1913 GNUNET_ATS_PeerInfo_Iterator pi_it,
1916 struct PeerInfoIteratorContext pi_ctx;
1917 struct GNUNET_BANDWIDTH_Value32NBO zero_bw;
1918 GNUNET_assert (NULL != peer);
1919 GNUNET_assert (NULL != handle->addresses);
1921 return; /* does not make sense without callback */
1923 zero_bw = GNUNET_BANDWIDTH_value_init (0);
1925 pi_ctx.it_cls = pi_it_cls;
1927 GNUNET_CONTAINER_multihashmap_get_multiple (handle->addresses, &peer->hashPubKey, &peerinfo_it, &pi_ctx);
1930 pi_it (pi_it_cls, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, zero_bw, zero_bw);
1935 /* end of gnunet-service-ats_addresses.c */