// CreateNetwork creates a network from intent func CreateNetwork(network intent.ConfigNetwork, stateDriver core.StateDriver, tenantName string) error { var extPktTag, pktTag uint gCfg := gstate.Cfg{} gCfg.StateDriver = stateDriver err := gCfg.Read("") if err != nil { log.Errorf("error reading tenant cfg state. Error: %s", err) return err } // Create network state networkID := network.Name + "." + tenantName nwCfg := &mastercfg.CfgNetworkState{} nwCfg.StateDriver = stateDriver if nwCfg.Read(networkID) == nil { // TODO: check if parameters changed and apply an update if needed return nil } subnetIP, subnetLen, _ := netutils.ParseCIDR(network.SubnetCIDR) err = netutils.ValidateNetworkRangeParams(subnetIP, subnetLen) if err != nil { return err } ipv6Subnet, ipv6SubnetLen, _ := netutils.ParseCIDR(network.IPv6SubnetCIDR) // construct and update network state nwCfg = &mastercfg.CfgNetworkState{ Tenant: tenantName, NetworkName: network.Name, NwType: network.NwType, PktTagType: network.PktTagType, SubnetIP: subnetIP, SubnetLen: subnetLen, IPv6Subnet: ipv6Subnet, IPv6SubnetLen: ipv6SubnetLen, } nwCfg.ID = networkID nwCfg.StateDriver = stateDriver // Allocate pkt tags reqPktTag := uint(network.PktTag) if nwCfg.PktTagType == "vlan" { pktTag, err = gCfg.AllocVLAN(reqPktTag) if err != nil { return err } } else if nwCfg.PktTagType == "vxlan" { extPktTag, pktTag, err = gCfg.AllocVXLAN(reqPktTag) if err != nil { return err } } nwCfg.ExtPktTag = int(extPktTag) nwCfg.PktTag = int(pktTag) netutils.InitSubnetBitset(&nwCfg.IPAllocMap, nwCfg.SubnetLen) subnetAddr := netutils.GetSubnetAddr(nwCfg.SubnetIP, nwCfg.SubnetLen) nwCfg.SubnetIP = subnetAddr nwCfg.IPAddrRange = netutils.GetIPAddrRange(subnetIP, subnetLen) if network.Gateway != "" { nwCfg.Gateway = network.Gateway // Reserve gateway IP address if gateway is specified ipAddrValue, err := netutils.GetIPNumber(subnetAddr, nwCfg.SubnetLen, 32, nwCfg.Gateway) if err != nil { log.Errorf("Error parsing gateway address %s. Err: %v", nwCfg.Gateway, err) return err } nwCfg.IPAllocMap.Set(ipAddrValue) } if strings.Contains(subnetIP, "-") { netutils.SetBitsOutsideRange(&nwCfg.IPAllocMap, subnetIP, subnetLen) } if network.IPv6Gateway != "" { nwCfg.IPv6Gateway = network.IPv6Gateway // Reserve gateway IPv6 address if gateway is specified hostID, err := netutils.GetIPv6HostID(nwCfg.IPv6Subnet, nwCfg.IPv6SubnetLen, nwCfg.IPv6Gateway) if err != nil { log.Errorf("Error parsing gateway address %s. Err: %v", nwCfg.IPv6Gateway, err) return err } netutils.ReserveIPv6HostID(hostID, &nwCfg.IPv6AllocMap) } err = nwCfg.Write() if err != nil { return err } // Skip docker and service container configs for infra nw if network.NwType == "infra" { return nil } aci, _ := IsAciConfigured() if aci { // Skip docker network creation for ACI fabric mode. return nil } if GetClusterMode() == "docker" { // Create the network in docker err = docknet.CreateDockNet(tenantName, network.Name, "", nwCfg) if err != nil { log.Errorf("Error creating network %s in docker. Err: %v", nwCfg.ID, err) return err } } if IsDNSEnabled() { // Attach service container endpoint to the network err = attachServiceContainer(tenantName, network.Name, stateDriver) if err != nil { log.Errorf("Error attaching service container to network: %s. Err: %v", networkID, err) return err } } return nil }
// processResource handles resource commands func processResource(stateDriver core.StateDriver, rsrcName, rsrcVal string) error { // Read global config gCfg := gstate.Cfg{} gCfg.StateDriver = stateDriver err := gCfg.Read("") if err != nil { log.Errorf("error reading tenant cfg state. Error: %s", err) return err } // process resource based on name if rsrcName == "vlan" { numVlans, vlansInUse := gCfg.GetVlansInUse() fmt.Printf("Num Vlans: %d\n Current Vlans in Use: %s\n", numVlans, vlansInUse) // see if we need to set the resource if rsrcVal != "" { values, err := parseRange(rsrcVal) if err != nil { log.Errorf("Error parsing range: %v", err) return err } log.Infof("Setting vlan values: %v", values) // set vlan values for _, val := range values { _, err = gCfg.AllocVLAN(val) if err != nil { log.Errorf("Error setting vlan: %d. Err: %v", val, err) } } log.Infof("Finished setting VLANs") } } else if rsrcName == "vxlan" { numVxlans, vxlansInUse := gCfg.GetVxlansInUse() fmt.Printf("Num Vxlans: %d\n Current Vxlans in Use: %s\n", numVxlans, vxlansInUse) // see if we need to set the resource if rsrcVal != "" { values, err := parseRange(rsrcVal) if err != nil { log.Errorf("Error parsing range: %v", err) return err } log.Infof("Setting vxlan values: %v", values) // set vlan values for _, val := range values { _, _, err = gCfg.AllocVXLAN(val) if err != nil { log.Errorf("Error setting vxlan: %d. Err: %v", val, err) } } log.Infof("Finished setting VXLANs") } } else { log.Errorf("Unknown resource: %v", rsrcName) return fmt.Errorf("Unknown resource") } return nil }
// CreateNetwork creates a network from intent func CreateNetwork(network intent.ConfigNetwork, stateDriver core.StateDriver, tenantName string) error { var extPktTag, pktTag uint gCfg := gstate.Cfg{} gCfg.StateDriver = stateDriver err := gCfg.Read("") if err != nil { log.Errorf("error reading tenant cfg state. Error: %s", err) return err } // Create network state networkID := network.Name + "." + tenantName nwCfg := &mastercfg.CfgNetworkState{} nwCfg.StateDriver = stateDriver if nwCfg.Read(networkID) == nil { // TODO: check if parameters changed and apply an update if needed return nil } subnetIP, subnetLen, _ := netutils.ParseCIDR(network.SubnetCIDR) // construct and update network state nwCfg = &mastercfg.CfgNetworkState{ Tenant: tenantName, NetworkName: network.Name, PktTagType: network.PktTagType, SubnetIP: subnetIP, SubnetLen: subnetLen, Gateway: network.Gateway, } nwCfg.ID = networkID nwCfg.StateDriver = stateDriver // Allocate pkt tags reqPktTag := uint(network.PktTag) if nwCfg.PktTagType == "vlan" { pktTag, err = gCfg.AllocVLAN(reqPktTag) if err != nil { return err } } else if nwCfg.PktTagType == "vxlan" { extPktTag, pktTag, err = gCfg.AllocVXLAN(reqPktTag) if err != nil { return err } } nwCfg.ExtPktTag = int(extPktTag) nwCfg.PktTag = int(pktTag) // Reserve gateway IP address ipAddrValue, err := netutils.GetIPNumber(nwCfg.SubnetIP, nwCfg.SubnetLen, 32, nwCfg.Gateway) if err != nil { log.Errorf("Error parsing gateway address %s. Err: %v", nwCfg.Gateway, err) return err } nwCfg.IPAllocMap.Set(ipAddrValue) netutils.InitSubnetBitset(&nwCfg.IPAllocMap, nwCfg.SubnetLen) err = nwCfg.Write() if err != nil { return err } if GetClusterMode() == "docker" { // Create the network in docker subnetCIDR := fmt.Sprintf("%s/%d", nwCfg.SubnetIP, nwCfg.SubnetLen) err = createDockNet(tenantName, network.Name, "", subnetCIDR, nwCfg.Gateway) if err != nil { log.Errorf("Error creating network %s in docker. Err: %v", nwCfg.ID, err) return err } // Attach service container endpoint to the network err = attachServiceContainer(tenantName, network.Name, stateDriver) if err != nil { log.Errorf("Error attaching service container to network: %s. Err: %v", networkID, err) return err } } return nil }