| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package l2topology |
| 4 | |
| 5 | import ( |
| 6 | "strconv" |
| 7 | "strings" |
| 8 | ) |
| 9 | |
| 10 | func (s *l2BuildState) applyBridge(observations []L2Observation) { |
| 11 | for _, obs := range observations { |
| 12 | sourceID := strings.TrimSpace(obs.DeviceID) |
| 13 | if sourceID == "" { |
| 14 | continue |
| 15 | } |
| 16 | |
| 17 | bridgePortToIfIndex := make(map[string]int, len(obs.BridgePorts)) |
| 18 | for _, bridgePort := range sortedBridgePorts(obs.BridgePorts) { |
| 19 | basePort := strings.TrimSpace(bridgePort.BasePort) |
| 20 | if basePort == "" || bridgePort.IfIndex <= 0 { |
| 21 | continue |
| 22 | } |
| 23 | bridgePortToIfIndex[basePort] = bridgePort.IfIndex |
| 24 | } |
| 25 | |
| 26 | for _, candidate := range buildFDBCandidates(obs.FDBEntries, bridgePortToIfIndex) { |
| 27 | endpointID := "mac:" + candidate.mac |
| 28 | attachment := Attachment{ |
| 29 | DeviceID: sourceID, |
| 30 | IfIndex: candidate.ifIndex, |
| 31 | EndpointID: endpointID, |
| 32 | Method: "fdb", |
| 33 | } |
| 34 | |
| 35 | labels := make(map[string]string) |
| 36 | if candidate.bridgePort != "" { |
| 37 | labels["bridge_port"] = candidate.bridgePort |
| 38 | } |
| 39 | if status := strings.TrimSpace(candidate.statusRaw); status != "" { |
| 40 | labels["fdb_status"] = status |
| 41 | } |
| 42 | if candidate.ifIndex > 0 { |
| 43 | ifName := strings.TrimSpace(s.ifNameByDeviceIfIndex[deviceIfIndexKey(sourceID, candidate.ifIndex)]) |
| 44 | if ifName != "" { |
| 45 | labels["if_name"] = ifName |
| 46 | } |
| 47 | labels["bridge_domain"] = deriveBridgeDomainFromIfIndex(sourceID, candidate.ifIndex) |
| 48 | } else if candidate.bridgePort != "" { |
| 49 | labels["bridge_domain"] = deriveBridgeDomainFromBridgePort(sourceID, candidate.bridgePort) |
| 50 | } |
| 51 | if candidate.vlanID != "" { |
| 52 | labels["vlan_id"] = candidate.vlanID |
| 53 | labels["vlan"] = candidate.vlanID |
| 54 | } |
| 55 | if candidate.vlanName != "" { |
| 56 | labels["vlan_name"] = candidate.vlanName |
| 57 | } |
| 58 | if len(labels) > 0 { |
| 59 | attachment.Labels = labels |
| 60 | } |
| 61 | |
| 62 | if addAttachment(s.attachments, attachment) { |
| 63 | s.attachmentsFDB++ |
| 64 | s.endpointIDs[endpointID] = struct{}{} |
| 65 | if domain := attachmentDomain(attachment); domain != "" { |
| 66 | s.bridgeDomains[domain] = struct{}{} |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | func (s *l2BuildState) applyARP(observations []L2Observation) { |
| 74 | for _, obs := range observations { |
| 75 | sourceID := strings.TrimSpace(obs.DeviceID) |
| 76 | if sourceID == "" { |
| 77 | continue |
| 78 | } |
| 79 | for _, entry := range sortedARPNDEntries(obs.ARPNDEntries) { |
| 80 | mac := normalizeMAC(entry.MAC) |
| 81 | ip := canonicalIP(entry.IP) |
| 82 | if mac == "" { |
| 83 | continue |
| 84 | } |
| 85 | |
| 86 | endpointID := "mac:" + mac |
| 87 | acc := ensureEnrichmentAccumulator(s.enrichments, endpointID) |
| 88 | acc.EndpointID = endpointID |
| 89 | acc.MAC = mac |
| 90 | if ip != "" { |
| 91 | addr := parseAddr(ip) |
| 92 | if addr.IsValid() { |
| 93 | acc.IPs[addr.String()] = addr |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | protocol := canonicalARPProtocol(entry.Protocol) |
| 98 | acc.Protocols[protocol] = struct{}{} |
| 99 | acc.DeviceIDs[sourceID] = struct{}{} |
| 100 | if entry.IfIndex > 0 { |
| 101 | acc.IfIndexes[strconv.Itoa(entry.IfIndex)] = struct{}{} |
| 102 | } |
| 103 | ifName := strings.TrimSpace(entry.IfName) |
| 104 | if ifName == "" && entry.IfIndex > 0 { |
| 105 | ifName = strings.TrimSpace(s.ifNameByDeviceIfIndex[deviceIfIndexKey(sourceID, entry.IfIndex)]) |
| 106 | } |
| 107 | if ifName != "" { |
| 108 | acc.IfNames[ifName] = struct{}{} |
| 109 | } |
| 110 | if state := strings.TrimSpace(entry.State); state != "" { |
| 111 | acc.States[state] = struct{}{} |
| 112 | } |
| 113 | if addrType := canonicalAddrType(entry.AddrType, ip); addrType != "" { |
| 114 | acc.AddrTypes[addrType] = struct{}{} |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | s.refreshEndpointIndex() |
| 119 | s.enrichmentsARPND = len(s.enrichments) |
| 120 | } |