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Diffstat (limited to 'src/ats/gnunet-service-ats_reservations.c')
-rw-r--r-- | src/ats/gnunet-service-ats_reservations.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/src/ats/gnunet-service-ats_reservations.c b/src/ats/gnunet-service-ats_reservations.c deleted file mode 100644 index a50e9d5b7..000000000 --- a/src/ats/gnunet-service-ats_reservations.c +++ /dev/null | |||
@@ -1,217 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2011 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @file ats/gnunet-service-ats_reservations.c | ||
22 | * @brief ats service, inbound bandwidth reservation management | ||
23 | * @author Christian Grothoff | ||
24 | */ | ||
25 | #include "platform.h" | ||
26 | #include "gnunet-service-ats_reservations.h" | ||
27 | #include "gnunet-service-ats.h" | ||
28 | #include "ats.h" | ||
29 | |||
30 | /** | ||
31 | * Number of seconds that available bandwidth carries over | ||
32 | * (can accumulate). Note that the | ||
33 | * test_ats_reservation_api test depends on this value! | ||
34 | */ | ||
35 | #define MAX_BANDWIDTH_CARRY_S 5 | ||
36 | |||
37 | |||
38 | /** | ||
39 | * Map of peer identities to `struct GNUNET_BANDWIDTH_Tracker *`s | ||
40 | */ | ||
41 | static struct GNUNET_CONTAINER_MultiPeerMap *trackers; | ||
42 | |||
43 | |||
44 | /** | ||
45 | * Reserve the given amount of incoming bandwidth (in bytes) from the | ||
46 | * given peer. If a reservation is not possible right now, return how | ||
47 | * long the client should wait before trying again. | ||
48 | * | ||
49 | * @param peer peer to reserve bandwidth from | ||
50 | * @param amount number of bytes to reserve | ||
51 | * @return 0 if the reservation was successful, FOREVER if the | ||
52 | * peer is not connected, otherwise the time to wait | ||
53 | * until the reservation might succeed | ||
54 | */ | ||
55 | static struct GNUNET_TIME_Relative | ||
56 | reservations_reserve (const struct GNUNET_PeerIdentity *peer, | ||
57 | int32_t amount) | ||
58 | { | ||
59 | struct GNUNET_BANDWIDTH_Tracker *tracker; | ||
60 | struct GNUNET_TIME_Relative ret; | ||
61 | |||
62 | tracker = GNUNET_CONTAINER_multipeermap_get (trackers, | ||
63 | peer); | ||
64 | if (NULL == tracker) | ||
65 | { | ||
66 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
67 | "Not connected, allowing reservation of %d bytes\n", | ||
68 | (int) amount); | ||
69 | return GNUNET_TIME_UNIT_ZERO; /* not connected, satisfy now */ | ||
70 | } | ||
71 | if (amount >= 0) | ||
72 | { | ||
73 | ret = GNUNET_BANDWIDTH_tracker_get_delay (tracker, amount); | ||
74 | if (ret.rel_value_us > 0) | ||
75 | { | ||
76 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
77 | "Delay to satisfy reservation for %d bytes is %s\n", | ||
78 | (int) amount, | ||
79 | GNUNET_STRINGS_relative_time_to_string (ret, | ||
80 | GNUNET_YES)); | ||
81 | return ret; | ||
82 | } | ||
83 | } | ||
84 | (void) GNUNET_BANDWIDTH_tracker_consume (tracker, amount); | ||
85 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
86 | "Reserved %d bytes\n", | ||
87 | (int) amount); | ||
88 | return GNUNET_TIME_UNIT_ZERO; | ||
89 | } | ||
90 | |||
91 | |||
92 | /** | ||
93 | * Set the amount of bandwidth the other peer could currently transmit | ||
94 | * to us (as far as we know) to the given value. | ||
95 | * | ||
96 | * @param peer identity of the peer | ||
97 | * @param bandwidth_in currently available bandwidth from that peer to | ||
98 | * this peer (estimate) | ||
99 | */ | ||
100 | void | ||
101 | GAS_reservations_set_bandwidth (const struct GNUNET_PeerIdentity *peer, | ||
102 | struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in) | ||
103 | { | ||
104 | struct GNUNET_BANDWIDTH_Tracker *tracker; | ||
105 | |||
106 | tracker = GNUNET_CONTAINER_multipeermap_get (trackers, peer); | ||
107 | if (0 == ntohl (bandwidth_in.value__)) | ||
108 | { | ||
109 | if (NULL == tracker) | ||
110 | return; | ||
111 | GNUNET_assert (GNUNET_YES == | ||
112 | GNUNET_CONTAINER_multipeermap_remove (trackers, | ||
113 | peer, | ||
114 | tracker)); | ||
115 | GNUNET_free (tracker); | ||
116 | return; | ||
117 | } | ||
118 | if (NULL == tracker) | ||
119 | { | ||
120 | tracker = GNUNET_new (struct GNUNET_BANDWIDTH_Tracker); | ||
121 | GNUNET_BANDWIDTH_tracker_init (tracker, | ||
122 | NULL, | ||
123 | NULL, | ||
124 | bandwidth_in, | ||
125 | MAX_BANDWIDTH_CARRY_S); | ||
126 | GNUNET_assert (GNUNET_OK == | ||
127 | GNUNET_CONTAINER_multipeermap_put (trackers, | ||
128 | peer, | ||
129 | tracker, | ||
130 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY)); | ||
131 | return; | ||
132 | } | ||
133 | GNUNET_BANDWIDTH_tracker_update_quota (tracker, | ||
134 | bandwidth_in); | ||
135 | } | ||
136 | |||
137 | |||
138 | /** | ||
139 | * Handle 'reservation request' messages from clients. | ||
140 | * | ||
141 | * @param client client that sent the request | ||
142 | * @param msg the request message | ||
143 | */ | ||
144 | void | ||
145 | GAS_handle_reservation_request (struct GNUNET_SERVICE_Client *client, | ||
146 | const struct ReservationRequestMessage *msg) | ||
147 | { | ||
148 | struct GNUNET_MQ_Envelope *env; | ||
149 | struct ReservationResultMessage *result; | ||
150 | int32_t amount; | ||
151 | struct GNUNET_TIME_Relative res_delay; | ||
152 | |||
153 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
154 | "Received RESERVATION_REQUEST message\n"); | ||
155 | amount = (int32_t) ntohl (msg->amount); | ||
156 | res_delay = reservations_reserve (&msg->peer, amount); | ||
157 | if (res_delay.rel_value_us > 0) | ||
158 | amount = 0; | ||
159 | env = GNUNET_MQ_msg (result, | ||
160 | GNUNET_MESSAGE_TYPE_ATS_RESERVATION_RESULT); | ||
161 | result->amount = htonl (amount); | ||
162 | result->peer = msg->peer; | ||
163 | result->res_delay = GNUNET_TIME_relative_hton (res_delay); | ||
164 | GNUNET_STATISTICS_update (GSA_stats, | ||
165 | "# reservation requests processed", | ||
166 | 1, | ||
167 | GNUNET_NO); | ||
168 | GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (client), | ||
169 | env); | ||
170 | } | ||
171 | |||
172 | |||
173 | /** | ||
174 | * Initialize reservations subsystem. | ||
175 | */ | ||
176 | void | ||
177 | GAS_reservations_init () | ||
178 | { | ||
179 | trackers = GNUNET_CONTAINER_multipeermap_create (128, | ||
180 | GNUNET_NO); | ||
181 | } | ||
182 | |||
183 | |||
184 | /** | ||
185 | * Free memory of bandwidth tracker. | ||
186 | * | ||
187 | * @param cls NULL | ||
188 | * @param key peer identity (unused) | ||
189 | * @param value the `struct GNUNET_BANDWIDTH_Tracker` to free | ||
190 | * @return #GNUNET_OK (continue to iterate) | ||
191 | */ | ||
192 | static int | ||
193 | free_tracker (void *cls, | ||
194 | const struct GNUNET_PeerIdentity *key, | ||
195 | void *value) | ||
196 | { | ||
197 | struct GNUNET_BANDWIDTH_Tracker *tracker = value; | ||
198 | |||
199 | GNUNET_free (tracker); | ||
200 | return GNUNET_OK; | ||
201 | } | ||
202 | |||
203 | |||
204 | /** | ||
205 | * Shutdown reservations subsystem. | ||
206 | */ | ||
207 | void | ||
208 | GAS_reservations_done () | ||
209 | { | ||
210 | GNUNET_CONTAINER_multipeermap_iterate (trackers, | ||
211 | &free_tracker, | ||
212 | NULL); | ||
213 | GNUNET_CONTAINER_multipeermap_destroy (trackers); | ||
214 | } | ||
215 | |||
216 | |||
217 | /* end of gnunet-service-ats_reservations.c */ | ||