from core.topo import Topo, TopoConfig, TopoParameter import logging class MultiInterfaceMultiClientTopo(Topo): NAME = "MultiIfMultiClient" def __init__(self, topo_builder, parameterFile): logging.info("Initializing MultiInterfaceTopo...") super(MultiInterfaceMultiClientTopo, self).__init__(topo_builder, parameterFile) self.router = self.add_router() self.c2r_client_switches = [] self.c2r_router_switches = [] # First add the base client and server self.client = self.add_client() self.server = self.add_server() # For each client-router, add a client, a bottleneck link, and a server for l in self.get_client_to_router_links(): client = self.add_client() server = self.add_server() self.c2r_client_switches.append(self.add_c2r_client_side_switch(l)) self.add_link(self.client, self.c2r_client_switches[-1]) self.add_link(client, self.c2r_client_switches[-1]) self.c2r_router_switches.append(self.add_c2r_router_side_switch(l)) self.add_bottleneck_link(self.c2r_client_switches[-1], self.c2r_router_switches[-1], link_characteristics=l) self.add_link(self.c2r_router_switches[-1], self.router) # And connect the router to all servers for s in self.servers: self.add_link(self.router, s) def get_client_to_router_links(self): return [l for l in self.topo_parameter.link_characteristics if l.link_type == "c2r"] def add_c2r_client_side_switch(self, link): return self.add_switch("{}c2r{}".format(MultiInterfaceMultiClientTopo.SWITCH_NAME_PREFIX, 2 * link.id)) def add_c2r_router_side_switch(self, link): return self.add_switch("{}c2r{}".format(MultiInterfaceMultiClientTopo.SWITCH_NAME_PREFIX, 2 * link.id + 1)) def __str__(self): s = "Multiple interface topology with several clients and servers\n" i = 0 nc = len(self.get_client_to_router_links()) for i in range(0, nc): if i == nc // 2: s = s + "c- r--s\n" s = s + "c-\sw---bl---sw-/ \-s\n" else: s = s + "c-/sw---bl---sw-\ /-s\n" return s class MultiInterfaceMultiClientConfig(TopoConfig): NAME = "MultiIfMultiClient" def __init__(self, topo, param): super(MultiInterfaceMultiClientConfig, self).__init__(topo, param) def configure_routing(self): for i, l in enumerate(self.topo.c2r_client_switches): # Routing for the core client cmd = self.add_table_route_command(self.get_client_ip(i), i) self.topo.command_to(self.client, cmd) cmd = self.add_link_scope_route_command( self.get_client_subnet(i), self.get_client_interface(0, i), i) self.topo.command_to(self.client, cmd) cmd = self.add_table_default_route_command(self.get_router_ip_to_client_switch(i), i) self.topo.command_to(self.client, cmd) # Routing for the congestion client cmd = self.add_global_default_route_command(self.get_router_ip_to_client_switch(i), self.get_client_interface(i+1, 0)) self.topo.command_to(self.clients[i+1], cmd) cmd = self.add_global_default_route_command(self.get_router_ip_to_client_switch(0), self.get_client_interface(0, 0)) self.topo.command_to(self.client, cmd) for i, s in enumerate(self.topo.servers): cmd = self.add_simple_default_route_command(self.get_router_ip_to_server_switch(i)) self.topo.command_to(s, cmd) def configure_interfaces(self): logging.info("Configure interfaces using MultiInterfaceMultiClientConfig...") super(MultiInterfaceMultiClientConfig, self).configure_interfaces() self.clients = [self.topo.get_client(i) for i in range(0, self.topo.client_count())] self.servers = [self.topo.get_server(i) for i in range(0, self.topo.server_count())] self.client = self.clients[0] self.server = self.servers[0] self.router = self.topo.get_router(0) netmask = "255.255.255.0" for i, l in enumerate(self.topo.c2r_client_switches): # Core client cmd = self.interface_up_command(self.get_client_interface(0, i), self.get_client_ip(i), netmask) self.topo.command_to(self.client, cmd) client_interface_mac = self.client.intf(self.get_client_interface(0, i)).MAC() self.topo.command_to(self.router, "arp -s {} {}".format(self.get_client_ip(i), client_interface_mac)) if self.topo.get_client_to_router_links()[i].backup: cmd = self.interface_backup_command(self.get_client_interface(0, i)) self.topo.command_to(self.client, cmd) # Congestion client cmd = self.interface_up_command(self.get_client_interface(i + 1, 0), self.get_client_ip(i, congestion_client=True), netmask) self.topo.command_to(self.clients[i+1], cmd) client_interface_mac = self.clients[i+1].intf(self.get_client_interface(i + 1, 0)).MAC() self.topo.command_to(self.router, "arp -s {} {}".format(self.get_client_ip(i, congestion_client=True), client_interface_mac)) for i, l in enumerate(self.topo.c2r_router_switches): cmd = self.interface_up_command(self.get_router_interface_to_client_switch(i), self.get_router_ip_to_client_switch(i), netmask) self.topo.command_to(self.router, cmd) router_interface_mac = self.router.intf(self.get_router_interface_to_client_switch(i)).MAC() # Core client self.topo.command_to(self.client, "arp -s {} {}".format( self.get_router_ip_to_client_switch(i), router_interface_mac)) # Congestion client self.topo.command_to(self.clients[i+1], "arp -s {} {}".format( self.get_router_ip_to_client_switch(i), router_interface_mac)) for i, s in enumerate(self.servers): cmd = self.interface_up_command(self.get_router_interface_to_server_switch(i), self.get_router_ip_to_server_switch(i), netmask) self.topo.command_to(self.router, cmd) router_interface_mac = self.router.intf(self.get_router_interface_to_server_switch(i)).MAC() self.topo.command_to(s, "arp -s {} {}".format( self.get_router_ip_to_server_switch(i), router_interface_mac)) cmd = self.interface_up_command(self.get_server_interface(i, 0), self.get_server_ip(interface_index=i), netmask) self.topo.command_to(s, cmd) server_interface_mac = s.intf(self.get_server_interface(i, 0)).MAC() self.topo.command_to(self.router, "arp -s {} {}".format( self.get_server_ip(interface_index=i), server_interface_mac)) def get_client_ip(self, interface_index, congestion_client=False): return "{}{}.{}".format(self.param.get(TopoParameter.LEFT_SUBNET), interface_index, "10" if congestion_client else "1") def get_client_subnet(self, interface_index): return "{}{}.0/24".format(self.param.get(TopoParameter.LEFT_SUBNET), interface_index) def get_router_ip_to_client_switch(self, switch_index): return "{}{}.2".format(self.param.get(TopoParameter.LEFT_SUBNET), switch_index) def get_router_ip_to_server_switch(self, switch_index): return "{}{}.2".format(self.param.get(TopoParameter.RIGHT_SUBNET), switch_index) def get_server_ip(self, interface_index=0): return "{}{}.1".format(self.param.get(TopoParameter.RIGHT_SUBNET), interface_index) def get_server_subnet(self, interface_index): return "{}{}.0/24".format(self.param.get(TopoParameter.RIGHT_SUBNET), interface_index) def client_interface_count(self): return max(len(self.topo.c2r_client_switches), 1) def server_interface_count(self): return max(len(self.servers), 1) def get_router_interface_to_server_switch(self, switch_index): return self.get_router_interface_to_client_switch(len(self.topo.c2r_router_switches) + switch_index) def get_client_interface(self, client_index, interface_index): return "{}-eth{}".format(self.topo.get_client_name(client_index), interface_index) def get_router_interface_to_client_switch(self, interface_index): return "{}-eth{}".format(self.topo.get_router_name(0), interface_index) def get_server_interface(self, server_index, interface_index): return "{}-eth{}".format(self.topo.get_server_name(server_index), interface_index)