| package org.onlab.onos.sdnip; |
| |
| import org.onlab.onos.ApplicationId; |
| import org.onlab.onos.net.ConnectPoint; |
| import org.onlab.onos.net.flow.DefaultTrafficSelector; |
| import org.onlab.onos.net.flow.DefaultTrafficTreatment; |
| import org.onlab.onos.net.flow.TrafficSelector; |
| import org.onlab.onos.net.flow.TrafficTreatment; |
| import org.onlab.onos.net.intent.IntentService; |
| import org.onlab.onos.net.intent.PointToPointIntent; |
| import org.onlab.onos.sdnip.config.BgpPeer; |
| import org.onlab.onos.sdnip.config.BgpSpeaker; |
| import org.onlab.onos.sdnip.config.Interface; |
| import org.onlab.onos.sdnip.config.InterfaceAddress; |
| import org.onlab.onos.sdnip.config.SdnIpConfigService; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IPv4; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| |
| /** |
| * Manages the connectivity requirements between peers. |
| */ |
| public class PeerConnectivityManager { |
| |
| private static final Logger log = LoggerFactory.getLogger( |
| PeerConnectivityManager.class); |
| |
| // TODO these shouldn't be defined here |
| private static final short BGP_PORT = 179; |
| private static final int IPV4_BIT_LENGTH = 32; |
| |
| private final SdnIpConfigService configInfoService; |
| private final InterfaceService interfaceService; |
| private final IntentService intentService; |
| |
| private final ApplicationId appId; |
| |
| public PeerConnectivityManager(ApplicationId appId, |
| SdnIpConfigService configInfoService, |
| InterfaceService interfaceService, |
| IntentService intentService) { |
| this.appId = appId; |
| this.configInfoService = configInfoService; |
| this.interfaceService = interfaceService; |
| this.intentService = intentService; |
| } |
| |
| public void start() { |
| // TODO are any of these errors? |
| if (interfaceService.getInterfaces().isEmpty()) { |
| |
| log.warn("The interface in configuration file is empty. " |
| + "Thus, the SDN-IP application can not be started."); |
| } else if (configInfoService.getBgpPeers().isEmpty()) { |
| |
| log.warn("The BGP peer in configuration file is empty." |
| + "Thus, the SDN-IP application can not be started."); |
| } else if (configInfoService.getBgpSpeakers() == null) { |
| |
| log.error("The BGP speaker in configuration file is empty. " |
| + "Thus, the SDN-IP application can not be started."); |
| return; |
| } |
| |
| setupBgpPaths(); |
| setupIcmpPaths(); |
| } |
| |
| /** |
| * Sets up paths for all {@link BgpSpeaker}s and all external peers. |
| * <p/> |
| * Run a loop for all BGP speakers and a loop for all BGP peers outside. |
| * Push intents for paths from each BGP speaker to all peers. Push intents |
| * for paths from all peers to each BGP speaker. |
| */ |
| private void setupBgpPaths() { |
| for (BgpSpeaker bgpSpeaker : configInfoService.getBgpSpeakers() |
| .values()) { |
| log.debug("Start to set up BGP paths for BGP speaker: {}", |
| bgpSpeaker); |
| ConnectPoint bgpdConnectPoint = bgpSpeaker.connectPoint(); |
| |
| List<InterfaceAddress> interfaceAddresses = |
| bgpSpeaker.interfaceAddresses(); |
| |
| for (BgpPeer bgpPeer : configInfoService.getBgpPeers().values()) { |
| |
| log.debug("Start to set up BGP paths between BGP speaker: {} " |
| + "to BGP peer: {}", bgpSpeaker, bgpPeer); |
| |
| Interface peerInterface = interfaceService.getInterface( |
| bgpPeer.connectPoint()); |
| if (peerInterface == null) { |
| log.error("Can not find the corresponding Interface from " |
| + "configuration for BGP peer {}", |
| bgpPeer.ipAddress()); |
| continue; |
| } |
| |
| IpAddress bgpdAddress = null; |
| for (InterfaceAddress interfaceAddress : interfaceAddresses) { |
| if (interfaceAddress.connectPoint().equals( |
| peerInterface.connectPoint())) { |
| bgpdAddress = interfaceAddress.ipAddress(); |
| break; |
| } |
| } |
| if (bgpdAddress == null) { |
| log.debug("There is no interface IP address for bgpPeer: {}" |
| + " on interface {}", bgpPeer, bgpPeer.connectPoint()); |
| return; |
| } |
| |
| IpAddress bgpdPeerAddress = bgpPeer.ipAddress(); |
| ConnectPoint bgpdPeerConnectPoint = peerInterface.connectPoint(); |
| |
| // install intent for BGP path from BGPd to BGP peer matching |
| // destination TCP port 179 |
| |
| // TODO: The usage of PacketMatchBuilder will be improved, then we |
| // only need to new the PacketMatchBuilder once. |
| // By then, the code here will be improved accordingly. |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchIPSrc(IpPrefix.valueOf(bgpdAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(bgpdPeerAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchTcpDst(BGP_PORT) |
| .build(); |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .build(); |
| |
| PointToPointIntent intentMatchDstTcpPort = |
| new PointToPointIntent(appId, selector, treatment, |
| bgpdConnectPoint, bgpdPeerConnectPoint); |
| intentService.submit(intentMatchDstTcpPort); |
| log.debug("Submitted BGP path intent matching dst TCP port 179 " |
| + "from BGPd {} to peer {}: {}", |
| bgpdAddress, bgpdPeerAddress, intentMatchDstTcpPort); |
| |
| // install intent for BGP path from BGPd to BGP peer matching |
| // source TCP port 179 |
| selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchIPSrc(IpPrefix.valueOf(bgpdAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(bgpdPeerAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchTcpSrc(BGP_PORT) |
| .build(); |
| |
| PointToPointIntent intentMatchSrcTcpPort = |
| new PointToPointIntent(appId, selector, treatment, |
| bgpdConnectPoint, bgpdPeerConnectPoint); |
| intentService.submit(intentMatchSrcTcpPort); |
| log.debug("Submitted BGP path intent matching src TCP port 179" |
| + "from BGPd {} to peer {}: {}", |
| bgpdAddress, bgpdPeerAddress, intentMatchSrcTcpPort); |
| |
| // install intent for reversed BGP path from BGP peer to BGPd |
| // matching destination TCP port 179 |
| selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchIPSrc(IpPrefix.valueOf(bgpdPeerAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(bgpdAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchTcpDst(BGP_PORT) |
| .build(); |
| |
| PointToPointIntent reversedIntentMatchDstTcpPort = |
| new PointToPointIntent(appId, selector, treatment, |
| bgpdPeerConnectPoint, bgpdConnectPoint); |
| intentService.submit(reversedIntentMatchDstTcpPort); |
| log.debug("Submitted BGP path intent matching dst TCP port 179" |
| + "from BGP peer {} to BGPd {} : {}", |
| bgpdPeerAddress, bgpdAddress, reversedIntentMatchDstTcpPort); |
| |
| // install intent for reversed BGP path from BGP peer to BGPd |
| // matching source TCP port 179 |
| selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPProtocol(IPv4.PROTOCOL_TCP) |
| .matchIPSrc(IpPrefix.valueOf(bgpdPeerAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(bgpdAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchTcpSrc(BGP_PORT) |
| .build(); |
| |
| PointToPointIntent reversedIntentMatchSrcTcpPort = |
| new PointToPointIntent(appId, selector, treatment, |
| bgpdPeerConnectPoint, bgpdConnectPoint); |
| intentService.submit(reversedIntentMatchSrcTcpPort); |
| log.debug("Submitted BGP path intent matching src TCP port 179" |
| + "from BGP peer {} to BGPd {} : {}", |
| bgpdPeerAddress, bgpdAddress, reversedIntentMatchSrcTcpPort); |
| |
| } |
| } |
| } |
| |
| /** |
| * Sets up ICMP paths between each {@link BgpSpeaker} and all BGP peers |
| * located in other external networks. |
| * <p/> |
| * Run a loop for all BGP speakers and a loop for all BGP Peers. Push |
| * intents for paths from each BGP speaker to all peers. Push intents |
| * for paths from all peers to each BGP speaker. |
| */ |
| private void setupIcmpPaths() { |
| for (BgpSpeaker bgpSpeaker : configInfoService.getBgpSpeakers() |
| .values()) { |
| log.debug("Start to set up ICMP paths for BGP speaker: {}", |
| bgpSpeaker); |
| ConnectPoint bgpdConnectPoint = bgpSpeaker.connectPoint(); |
| List<InterfaceAddress> interfaceAddresses = bgpSpeaker |
| .interfaceAddresses(); |
| |
| for (BgpPeer bgpPeer : configInfoService.getBgpPeers().values()) { |
| |
| Interface peerInterface = interfaceService.getInterface( |
| bgpPeer.connectPoint()); |
| |
| if (peerInterface == null) { |
| log.error("Can not find the corresponding Interface from " |
| + "configuration for BGP peer {}", |
| bgpPeer.ipAddress()); |
| continue; |
| } |
| IpAddress bgpdAddress = null; |
| for (InterfaceAddress interfaceAddress : interfaceAddresses) { |
| if (interfaceAddress.connectPoint().equals( |
| peerInterface.connectPoint())) { |
| bgpdAddress = interfaceAddress.ipAddress(); |
| break; |
| } |
| |
| } |
| if (bgpdAddress == null) { |
| log.debug("There is no IP address for bgpPeer: {} on " |
| + "interface port: {}", bgpPeer, |
| bgpPeer.connectPoint()); |
| return; |
| } |
| |
| IpAddress bgpdPeerAddress = bgpPeer.ipAddress(); |
| ConnectPoint bgpdPeerConnectPoint = peerInterface.connectPoint(); |
| |
| // install intent for ICMP path from BGPd to BGP peer |
| TrafficSelector selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPProtocol(IPv4.PROTOCOL_ICMP) |
| .matchIPSrc(IpPrefix.valueOf(bgpdAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(bgpdPeerAddress.toInt(), IPV4_BIT_LENGTH)) |
| .build(); |
| |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| .build(); |
| |
| PointToPointIntent intent = |
| new PointToPointIntent(appId, selector, treatment, |
| bgpdConnectPoint, bgpdPeerConnectPoint); |
| intentService.submit(intent); |
| log.debug("Submitted ICMP path intent from BGPd {} to peer {} :" |
| + " {}", bgpdAddress, bgpdPeerAddress, intent); |
| |
| // install intent for reversed ICMP path from BGP peer to BGPd |
| selector = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPProtocol(IPv4.PROTOCOL_ICMP) |
| .matchIPSrc(IpPrefix.valueOf(bgpdPeerAddress.toInt(), IPV4_BIT_LENGTH)) |
| .matchIPDst(IpPrefix.valueOf(bgpdAddress.toInt(), IPV4_BIT_LENGTH)) |
| .build(); |
| |
| PointToPointIntent reversedIntent = |
| new PointToPointIntent(appId, selector, treatment, |
| bgpdPeerConnectPoint, bgpdConnectPoint); |
| intentService.submit(reversedIntent); |
| log.debug("Submitted ICMP path intent from BGP peer {} to BGPd" |
| + " {} : {}", |
| bgpdPeerAddress, bgpdAddress, reversedIntent); |
| } |
| } |
| } |
| |
| } |