2 This file is part of GNUnet
3 Copyright (C) 2008--2013 GNUnet e.V.
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., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
22 * @file testbed/testbed_api_topology.h
23 * @brief header for intra library exported functions
24 * @author Sree Harsha Totakura <sreeharsha@totakura.in>
27 #ifndef TESTBED_API_TOPOLOGY_H
28 #define TESTBED_API_TOPOLOGY_H
31 * Returns the number of links that are required to generate a 2d torus for the
32 * given number of peers. Also returns the arrangment (number of rows and the
35 * @param num_peers number of peers
36 * @param rows number of rows in the 2d torus. Can be NULL.
37 * @param rows_len the length of each row. This array will be allocated
38 * fresh. The caller should free it. Can be NULL.
41 GNUNET_TESTBED_2dtorus_calc_links (unsigned int num_peers, unsigned int *rows,
42 unsigned int **rows_len);
46 * Get a topology from a string input.
48 * @param topology where to write the retrieved topology
49 * @param topology_string The string to attempt to
50 * get a configuration value from
51 * @return GNUNET_YES if topology string matched a
52 * known topology, GNUNET_NO if not
55 GNUNET_TESTBED_topology_get_ (enum GNUNET_TESTBED_TopologyOption *topology,
56 const char *topology_string);
60 * Returns the string corresponding to the given topology
62 * @param topology the topology
63 * @return the string (freshly allocated) of given topology; NULL if topology cannot be
64 * expressed as a string
67 GNUNET_TESTBED_topology_to_str_ (enum GNUNET_TESTBED_TopologyOption topology);
71 * Functions of this type are called to process underlay link
74 * @param A offset of first peer
75 * @param B offset of second peer
76 * @param bandwidth the bandwidth of the link in bytes per second
77 * @param latency the latency of link in milliseconds
78 * @param loss the percentage of messages dropped on the link
79 * @return GNUNET_OK to continue processing; GNUNET_SYSERR to abort
81 typedef int (*underlay_link_processor) (void *cls,
84 unsigned int bandwidth,
90 * Function to construct an underlay topology
92 * @param num_peers the number of peers for which the topology should be
94 * @param proc the underlay link processor callback. Will be called for each
95 * underlay link generated unless a previous call to this callback
96 * returned GNUNET_SYSERR. Cannot be NULL.
97 * @param cls closure for proc
98 * @param ... variable arguments denoting the topology and its parameters. They
99 * should start with the type of topology to generate followed by their
100 * options. These arguments should *always* end with
101 * GNUNET_TESTBED_TOPOLOGY_OPTION_END option
102 * @return GNUNET_OK if underlay link generation is successful; GNUNET_SYSERR
103 * upon error in generating the underlay or if any calls to the
104 * underlay link processor returned GNUNET_SYSERR
107 GNUNET_TESTBED_underlay_construct_ (int num_peers,
108 underlay_link_processor proc,
113 /* end of testbed_api_topology.h */