| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package l2topology |
| 4 | |
| 5 | import "strings" |
| 6 | |
| 7 | func (s *l2BuildState) applyLLDP(observations []L2Observation) { |
| 8 | lldpLinks := buildLLDPMatchLinks(observations) |
| 9 | annotateLLDPLinkMatchIdentities(lldpLinks, s.hostToID, s.chassisToID, s.ipToID) |
| 10 | lldpPairs := matchLLDPLinksEnlinkdPassOrder(lldpLinks) |
| 11 | lldpTargetOverrides := buildLLDPTargetOverrides(lldpLinks, lldpPairs) |
| 12 | lldpPairMetadata := buildLLDPPairMetadata(lldpLinks, lldpPairs) |
| 13 | |
| 14 | for _, link := range lldpLinks { |
| 15 | targetID := strings.TrimSpace(lldpTargetOverrides[link.index]) |
| 16 | if targetID == "" { |
| 17 | targetID = s.resolveRemote(link.remoteSysName, link.remoteChassisID, link.remoteManagement, link.remoteFallbackID) |
| 18 | } |
| 19 | |
| 20 | adj := Adjacency{ |
| 21 | Protocol: "lldp", |
| 22 | SourceID: link.sourceDeviceID, |
| 23 | SourcePort: link.sourcePort, |
| 24 | TargetID: targetID, |
| 25 | TargetPort: link.targetPort, |
| 26 | } |
| 27 | applyAdjacencyPairMetadata(&adj, lldpPairMetadata[link.index]) |
| 28 | if addAdjacency(s.adjacencies, adj) { |
| 29 | s.linksLLDP++ |
| 30 | } |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | func (s *l2BuildState) applyCDP(observations []L2Observation) { |
| 35 | cdpLinks := buildCDPMatchLinks(observations) |
| 36 | cdpPairs := matchCDPLinksEnlinkdPassOrder(cdpLinks) |
| 37 | cdpTargetOverrides := buildCDPTargetOverrides(cdpLinks, cdpPairs) |
| 38 | cdpPairMetadata := buildCDPPairMetadata(cdpLinks, cdpPairs) |
| 39 | |
| 40 | for _, link := range cdpLinks { |
| 41 | rawAddress := strings.TrimSpace(link.remoteAddressRaw) |
| 42 | targetID := strings.TrimSpace(cdpTargetOverrides[link.index]) |
| 43 | if targetID == "" { |
| 44 | targetIP := canonicalIP(rawAddress) |
| 45 | targetID = s.resolveRemoteEnforcingHostnameMACGuard(link.remoteHost, link.remoteDeviceID, targetIP, link.remoteDeviceID) |
| 46 | } |
| 47 | |
| 48 | adj := Adjacency{ |
| 49 | Protocol: "cdp", |
| 50 | SourceID: link.sourceDeviceID, |
| 51 | SourcePort: link.localInterfaceName, |
| 52 | TargetID: targetID, |
| 53 | TargetPort: link.remoteDevicePort, |
| 54 | } |
| 55 | if rawAddress != "" { |
| 56 | adj.Labels = map[string]string{ |
| 57 | "remote_address_raw": strings.ToLower(rawAddress), |
| 58 | } |
| 59 | } |
| 60 | applyAdjacencyPairMetadata(&adj, cdpPairMetadata[link.index]) |
| 61 | if addAdjacency(s.adjacencies, adj) { |
| 62 | s.linksCDP++ |
| 63 | } |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | func (s *l2BuildState) applySTP(observations []L2Observation) { |
| 68 | for _, obs := range observations { |
| 69 | sourceID := strings.TrimSpace(obs.DeviceID) |
| 70 | if sourceID == "" { |
| 71 | continue |
| 72 | } |
| 73 | |
| 74 | localBridgeAddr := canonicalBridgeAddr(obs.BaseBridgeAddress, obs.ChassisID) |
| 75 | bridgePortToIfIndex := make(map[string]int, len(obs.BridgePorts)) |
| 76 | for _, bridgePort := range sortedBridgePorts(obs.BridgePorts) { |
| 77 | basePort := strings.TrimSpace(bridgePort.BasePort) |
| 78 | if basePort == "" || bridgePort.IfIndex <= 0 { |
| 79 | continue |
| 80 | } |
| 81 | bridgePortToIfIndex[basePort] = bridgePort.IfIndex |
| 82 | } |
| 83 | |
| 84 | for _, entry := range sortedSTPPortEntries(obs.STPPorts) { |
| 85 | remoteBridgeAddr := canonicalBridgeAddr(entry.DesignatedBridge, "") |
| 86 | if remoteBridgeAddr == "" { |
| 87 | continue |
| 88 | } |
| 89 | if localBridgeAddr != "" && localBridgeAddr == remoteBridgeAddr { |
| 90 | continue |
| 91 | } |
| 92 | |
| 93 | targetID := strings.TrimSpace(s.bridgeAddrToID[remoteBridgeAddr]) |
| 94 | if targetID == "" || targetID == sourceID { |
| 95 | continue |
| 96 | } |
| 97 | |
| 98 | ifIndex := entry.IfIndex |
| 99 | if ifIndex <= 0 { |
| 100 | ifIndex = bridgePortToIfIndex[strings.TrimSpace(entry.Port)] |
| 101 | } |
| 102 | sourcePort := strings.TrimSpace(entry.IfName) |
| 103 | if sourcePort == "" && ifIndex > 0 { |
| 104 | sourcePort = strings.TrimSpace(s.ifNameByDeviceIfIndex[deviceIfIndexKey(sourceID, ifIndex)]) |
| 105 | } |
| 106 | if sourcePort == "" { |
| 107 | sourcePort = strings.TrimSpace(entry.Port) |
| 108 | } |
| 109 | |
| 110 | adj := Adjacency{ |
| 111 | Protocol: "stp", |
| 112 | SourceID: sourceID, |
| 113 | SourcePort: sourcePort, |
| 114 | TargetID: targetID, |
| 115 | TargetPort: strings.TrimSpace(entry.DesignatedPort), |
| 116 | } |
| 117 | labels := make(map[string]string) |
| 118 | if v := strings.TrimSpace(entry.Port); v != "" { |
| 119 | labels["stp_port"] = v |
| 120 | } |
| 121 | if v := strings.TrimSpace(entry.State); v != "" { |
| 122 | labels["stp_state"] = v |
| 123 | } |
| 124 | if v := strings.TrimSpace(entry.Enable); v != "" { |
| 125 | labels["stp_enable"] = v |
| 126 | } |
| 127 | if v := strings.TrimSpace(entry.PathCost); v != "" { |
| 128 | labels["stp_path_cost"] = v |
| 129 | } |
| 130 | if v := strings.TrimSpace(entry.DesignatedRoot); v != "" { |
| 131 | labels["stp_designated_root"] = v |
| 132 | } |
| 133 | if v := strings.TrimSpace(entry.VLANID); v != "" { |
| 134 | labels["vlan_id"] = v |
| 135 | labels["vlan"] = v |
| 136 | } |
| 137 | if v := strings.TrimSpace(entry.VLANName); v != "" { |
| 138 | labels["vlan_name"] = v |
| 139 | } |
| 140 | if len(labels) > 0 { |
| 141 | adj.Labels = labels |
| 142 | } |
| 143 | if addAdjacency(s.adjacencies, adj) { |
| 144 | s.linksSTP++ |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | } |