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17 * @file testbed/testbed_api_topology.h
18 * @brief header for intra library exported functions
19 * @author Sree Harsha Totakura <sreeharsha@totakura.in>
22 #ifndef TESTBED_API_TOPOLOGY_H
23 #define TESTBED_API_TOPOLOGY_H
26 * Returns the number of links that are required to generate a 2d torus for the
27 * given number of peers. Also returns the arrangment (number of rows and the
30 * @param num_peers number of peers
31 * @param rows number of rows in the 2d torus. Can be NULL.
32 * @param rows_len the length of each row. This array will be allocated
33 * fresh. The caller should free it. Can be NULL.
36 GNUNET_TESTBED_2dtorus_calc_links (unsigned int num_peers, unsigned int *rows,
37 unsigned int **rows_len);
41 * Get a topology from a string input.
43 * @param topology where to write the retrieved topology
44 * @param topology_string The string to attempt to
45 * get a configuration value from
46 * @return GNUNET_YES if topology string matched a
47 * known topology, GNUNET_NO if not
50 GNUNET_TESTBED_topology_get_ (enum GNUNET_TESTBED_TopologyOption *topology,
51 const char *topology_string);
55 * Returns the string corresponding to the given topology
57 * @param topology the topology
58 * @return the string (freshly allocated) of given topology; NULL if topology cannot be
59 * expressed as a string
62 GNUNET_TESTBED_topology_to_str_ (enum GNUNET_TESTBED_TopologyOption topology);
66 * Functions of this type are called to process underlay link
69 * @param A offset of first peer
70 * @param B offset of second peer
71 * @param bandwidth the bandwidth of the link in bytes per second
72 * @param latency the latency of link in milliseconds
73 * @param loss the percentage of messages dropped on the link
74 * @return GNUNET_OK to continue processing; GNUNET_SYSERR to abort
76 typedef int (*underlay_link_processor) (void *cls,
79 unsigned int bandwidth,
85 * Function to construct an underlay topology
87 * @param num_peers the number of peers for which the topology should be
89 * @param proc the underlay link processor callback. Will be called for each
90 * underlay link generated unless a previous call to this callback
91 * returned GNUNET_SYSERR. Cannot be NULL.
92 * @param cls closure for proc
93 * @param ... variable arguments denoting the topology and its parameters. They
94 * should start with the type of topology to generate followed by their
95 * options. These arguments should *always* end with
96 * GNUNET_TESTBED_TOPOLOGY_OPTION_END option
97 * @return GNUNET_OK if underlay link generation is successful; GNUNET_SYSERR
98 * upon error in generating the underlay or if any calls to the
99 * underlay link processor returned GNUNET_SYSERR
102 GNUNET_TESTBED_underlay_construct_ (int num_peers,
103 underlay_link_processor proc,
108 /* end of testbed_api_topology.h */