1 /* Copyright (c) 2013-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #ifndef NETWORK_ROUTING_HPP_
8 #define NETWORK_ROUTING_HPP_
11 #include <xbt/signal.hpp>
13 #include "surf_interface.hpp"
16 XBT_PUBLIC(void) routing_model_create( void *loopback);
26 class XBT_PRIVATE RoutingModelDescription;
27 class XBT_PRIVATE Onelink;
30 /** @ingroup SURF_routing_interface
31 * @brief A network card
32 * @details This represents a position in the network. One can route information between two netcards
37 virtual int getId()=0;
38 virtual int *getIdPtr()=0;
39 virtual void setId(int id)=0;
40 virtual char *getName()=0;
41 virtual As *getRcComponent()=0;
42 virtual e_surf_network_element_type_t getRcType()=0;
45 /** @ingroup SURF_routing_interface
46 * @brief The Autonomous System (AS) routing interface
51 xbt_dynar_t p_indexNetworkElm = xbt_dynar_new(sizeof(char*),NULL);
52 xbt_dict_t p_bypassRoutes; /* store bypass routes */
53 routing_model_description_t p_modelDesc;
54 e_surf_routing_hierarchy_t p_hierarchy;
55 char *p_name = nullptr;
56 As *p_routingFather = nullptr;
57 xbt_dict_t p_routingSons = xbt_dict_new_homogeneous(NULL);
59 xbt_dynar_t p_linkUpDownList = NULL;
62 /* Close that AS: no more content can be added to it */
63 virtual void Seal()=0;
66 xbt_dict_free(&p_routingSons);
67 xbt_dynar_free(&p_indexNetworkElm);
68 xbt_dynar_free(&p_linkUpDownList);
75 * @brief Get the characteristics of the routing path between two points
77 * This function is used by the networking model to find the information it needs when starting a communication.
79 * The things are not straightforward because the platform can be routed using several routing models.
80 * Some ASes may be routed in full, others may have only some connection information and use a shortest path on top of that, and so on.
81 * Some ASes may even not have any predefined links and use only coordinate informations to compute the latency.
83 * So, the path is constructed recursively, with each traversed AS adding its information to the set.
84 * The algorithm for that is explained in http://hal.inria.fr/hal-00650233/
86 * @param src Initial point of the routing path
87 * @param dst Final point of the routing path
88 * @param into Container into which the links should be pushed
89 * @param latency Accumulator in which the latencies should be added
91 virtual void getRouteAndLatency(
92 NetCard *src, NetCard *dst,
93 sg_platf_route_cbarg_t into, double *latency)=0;
94 virtual xbt_dynar_t getOneLinkRoutes()=0;
95 virtual void getGraph(xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges)=0;
96 virtual sg_platf_route_cbarg_t getBypassRoute(
97 NetCard *src, NetCard *dst,
100 /* The parser calls the following functions to inform the routing models
101 * that a new element is added to the AS currently built.
103 * Of course, only the routing model of this AS is informed, not every ones */
104 virtual int parsePU(NetCard *elm)=0; /* A host or a router, whatever */
105 virtual int parseAS(NetCard *elm)=0;
106 virtual void parseRoute(sg_platf_route_cbarg_t route)=0;
107 virtual void parseASroute(sg_platf_route_cbarg_t route)=0;
108 virtual void parseBypassroute(sg_platf_route_cbarg_t e_route)=0;
111 struct XBT_PRIVATE NetCardImpl : public NetCard {
113 NetCardImpl(const char *name, e_surf_network_element_type_t componentType, As *component)
114 : component_(component),
115 componentType_(componentType),
116 name_(xbt_strdup(name)) {}
117 ~NetCardImpl() { xbt_free(name_);};
119 int getId() {return id_;}
120 int *getIdPtr() {return &id_;}
121 void setId(int id) {id_ = id;}
122 char *getName() {return name_;}
123 As *getRcComponent() {return component_;}
124 e_surf_network_element_type_t getRcType() {return componentType_;}
127 e_surf_network_element_type_t componentType_;
132 /** @ingroup SURF_routing_interface
133 * @brief Link of lenght 1, alongside with its source and destination. This is mainly usefull in the ns3 bindings
137 Onelink(void *link, NetCard *src, NetCard *dst)
138 : p_src(src), p_dst(dst), p_link(link) {};
144 /** @ingroup SURF_routing_interface
145 * @brief The class representing a whole routing platform
147 XBT_PUBLIC_CLASS RoutingPlatf {
149 RoutingPlatf(void *loopback);
151 As *p_root = nullptr;
153 xbt_dynar_t p_lastRoute = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
154 xbt_dynar_t getOneLinkRoutes(void);
155 xbt_dynar_t recursiveGetOneLinkRoutes(As *rc);
156 void getRouteAndLatency(NetCard *src, NetCard *dst, xbt_dynar_t * links, double *latency);
163 XBT_PUBLIC_DATA(simgrid::xbt::signal<void(NetCard*)>) netcardCreatedCallbacks;
164 XBT_PUBLIC_DATA(simgrid::xbt::signal<void(As*)>) asCreatedCallbacks;
169 #endif /* NETWORK_ROUTING_HPP_ */