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_normalization.h
23 * @brief ats service address: management of ATS properties and preferences normalization
24 * @author Matthias Wachs
25 * @author Christian Grothoff
28 #include "gnunet_ats_service.h"
30 #define PREF_AGING_INTERVAL GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
31 #define PREF_AGING_FACTOR 0.95
32 #define PREF_EPSILON 0.1
34 #define DEFAULT_REL_PREFERENCE 1.0
35 #define DEFAULT_ABS_PREFERENCE 0.0
37 #define DEFAULT_REL_QUALITY 1.0
40 (*GAS_Normalization_preference_changed_cb) (void *cls,
41 const struct GNUNET_PeerIdentity *peer,
42 enum GNUNET_ATS_PreferenceKind kind,
46 (*GAS_Normalization_property_changed_cb) (void *cls,
47 struct ATS_Address *peer,
52 * Get the normalized preference values for a specific peer
54 * @param id the peer @return pointer to the values, can be indexed
55 * with GNUNET_ATS_PreferenceKind, NULL if peer does not exist
58 GAS_normalization_get_preferences (const struct GNUNET_PeerIdentity *id);
62 * Get the normalized properties values for a specific peer or
63 * the default values if
65 * @param address the address
66 * @return pointer to the values, can be indexed with GNUNET_ATS_PreferenceKind,
67 * default preferences if peer does not exist
70 GAS_normalization_get_properties (struct ATS_Address *address);
73 * Normalize an updated preference value
75 * @param src the client with this preference
76 * @param peer the peer to change the preference for
77 * @param kind the kind to change the preference
78 * @param score_abs the normalized score
81 GAS_normalization_normalize_preference (void *src,
82 const struct GNUNET_PeerIdentity *peer,
83 enum GNUNET_ATS_PreferenceKind kind,
87 * Update and normalize a atsi performance information
89 * @param addresses hashmap containing all addresses
90 * @param address the address to update
91 * @param atsi the array of performance information
92 * @param atsi_count the number of atsi information in the array
95 GAS_normalization_normalize_property (struct GNUNET_CONTAINER_MultiPeerMap *addresses,
96 struct ATS_Address *address,
97 const struct GNUNET_ATS_Information *atsi,
102 * Start the normalization component
104 * @param pref_ch_cb callback to call on relative preference changing
105 * @param pref_ch_cb_cls cls for the preference callback
106 * @param property_ch_cb callback to call on relative property changing
107 * @param property_ch_cb_cls cls for the property callback
110 GAS_normalization_start (GAS_Normalization_preference_changed_cb pref_ch_cb,
111 void *pref_ch_cb_cls,
112 GAS_Normalization_property_changed_cb property_ch_cb,
113 void *property_ch_cb_cls);
117 * Stop the normalization component and free all items
120 GAS_normalization_stop ();
123 /* end of gnunet-service-ats_normalization.h */