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| 1 | +package infiniband |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/json" |
| 5 | + "fmt" |
| 6 | + "os" |
| 7 | + |
| 8 | + "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/internal/lib/netlink" |
| 9 | + "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/types" |
| 10 | + "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/utils" |
| 11 | +) |
| 12 | + |
| 13 | +type ibPfGUIDJSONConfig struct { |
| 14 | + PciAddress string `json:"pciAddress,omitempty"` |
| 15 | + PfGUID string `json:"pfGuid,omitempty"` |
| 16 | + GUIDs []string `json:"guids,omitempty"` |
| 17 | + GUIDsRange *GUIDRangeJSON `json:"guidsRange,omitempty"` |
| 18 | +} |
| 19 | + |
| 20 | +type GUIDRangeJSON struct { |
| 21 | + Start string `json:"start,omitempty"` |
| 22 | + End string `json:"end,omitempty"` |
| 23 | +} |
| 24 | + |
| 25 | +type ibPfGUIDConfig struct { |
| 26 | + GUIDs []GUID |
| 27 | + GUIDRange *GUIDRange |
| 28 | +} |
| 29 | + |
| 30 | +type GUIDRange struct { |
| 31 | + Start GUID |
| 32 | + End GUID |
| 33 | +} |
| 34 | + |
| 35 | +func getIbGUIDConfig(configPath string, netlinkLib netlink.NetlinkLib, networkHelper types.NetworkInterface) (map[string]ibPfGUIDConfig, error) { |
| 36 | + links, err := netlinkLib.LinkList() |
| 37 | + if err != nil { |
| 38 | + return nil, err |
| 39 | + } |
| 40 | + rawConfigs, err := readJSONConfig(configPath) |
| 41 | + if err != nil { |
| 42 | + return nil, err |
| 43 | + } |
| 44 | + resultConfigs := map[string]ibPfGUIDConfig{} |
| 45 | + // Parse JSON config into an internal struct |
| 46 | + for _, rawConfig := range rawConfigs { |
| 47 | + pciAddress, err := getPfPciAddressFromRawConfig(rawConfig, links, networkHelper) |
| 48 | + if err != nil { |
| 49 | + return nil, fmt.Errorf("failed to extract pci address from ib guid config: %w", err) |
| 50 | + } |
| 51 | + if len(rawConfig.GUIDs) == 0 && (rawConfig.GUIDsRange == nil || (rawConfig.GUIDsRange.Start == "" || rawConfig.GUIDsRange.End == "")) { |
| 52 | + return nil, fmt.Errorf("either guid list or guid range should be provided, got none") |
| 53 | + } |
| 54 | + if len(rawConfig.GUIDs) != 0 && rawConfig.GUIDsRange != nil { |
| 55 | + return nil, fmt.Errorf("either guid list or guid range should be provided, got both") |
| 56 | + } |
| 57 | + if rawConfig.GUIDsRange != nil && ((rawConfig.GUIDsRange.Start != "" && rawConfig.GUIDsRange.End == "") || (rawConfig.GUIDsRange.Start == "" && rawConfig.GUIDsRange.End != "")) { |
| 58 | + return nil, fmt.Errorf("both guid rangeStart and rangeEnd should be provided, got one") |
| 59 | + } |
| 60 | + if len(rawConfig.GUIDs) != 0 { |
| 61 | + var guids []GUID |
| 62 | + for _, guidStr := range rawConfig.GUIDs { |
| 63 | + guid, err := ParseGUID(guidStr) |
| 64 | + if err != nil { |
| 65 | + return nil, fmt.Errorf("failed to parse ib guid %s: %w", guidStr, err) |
| 66 | + } |
| 67 | + guids = append(guids, guid) |
| 68 | + } |
| 69 | + resultConfigs[pciAddress] = ibPfGUIDConfig{ |
| 70 | + GUIDs: guids, |
| 71 | + } |
| 72 | + continue |
| 73 | + } |
| 74 | + |
| 75 | + rangeStart, err := ParseGUID(rawConfig.GUIDsRange.Start) |
| 76 | + if err != nil { |
| 77 | + return nil, fmt.Errorf("failed to parse ib guid range start: %w", err) |
| 78 | + } |
| 79 | + rangeEnd, err := ParseGUID(rawConfig.GUIDsRange.End) |
| 80 | + if err != nil { |
| 81 | + return nil, fmt.Errorf("failed to parse ib guid range end: %w", err) |
| 82 | + } |
| 83 | + if rangeEnd < rangeStart { |
| 84 | + return nil, fmt.Errorf("range end cannot be less then range start") |
| 85 | + } |
| 86 | + resultConfigs[pciAddress] = ibPfGUIDConfig{ |
| 87 | + GUIDRange: &GUIDRange{ |
| 88 | + Start: rangeStart, |
| 89 | + End: rangeEnd, |
| 90 | + }, |
| 91 | + } |
| 92 | + } |
| 93 | + return resultConfigs, nil |
| 94 | +} |
| 95 | + |
| 96 | +// readJSONConfig reads the file at the given path and unmarshals the contents into an array of ibPfGUIDJSONConfig structs |
| 97 | +func readJSONConfig(configPath string) ([]ibPfGUIDJSONConfig, error) { |
| 98 | + data, err := os.ReadFile(utils.GetHostExtensionPath(configPath)) |
| 99 | + if err != nil { |
| 100 | + return nil, fmt.Errorf("failed to read ib guid config: %w", err) |
| 101 | + } |
| 102 | + var configs []ibPfGUIDJSONConfig |
| 103 | + if err := json.Unmarshal(data, &configs); err != nil { |
| 104 | + return nil, fmt.Errorf("failed to unmarshal content of ib guid config: %w", err) |
| 105 | + } |
| 106 | + return configs, nil |
| 107 | +} |
| 108 | + |
| 109 | +func getPfPciAddressFromRawConfig(pfRawConfig ibPfGUIDJSONConfig, links []netlink.Link, networkHelper types.NetworkInterface) (string, error) { |
| 110 | + if pfRawConfig.PciAddress != "" && pfRawConfig.PfGUID != "" { |
| 111 | + return "", fmt.Errorf("either PCI address or PF GUID required to describe an interface, both provided") |
| 112 | + } |
| 113 | + if pfRawConfig.PciAddress == "" && pfRawConfig.PfGUID == "" { |
| 114 | + return "", fmt.Errorf("either PCI address or PF GUID required to describe an interface, none provided") |
| 115 | + } |
| 116 | + if pfRawConfig.PciAddress != "" { |
| 117 | + return pfRawConfig.PciAddress, nil |
| 118 | + } |
| 119 | + // PfGUID is provided, need to resolve the pci address |
| 120 | + for _, link := range links { |
| 121 | + if link.Attrs().HardwareAddr.String() == pfRawConfig.PfGUID { |
| 122 | + return networkHelper.GetPciAddressFromInterfaceName(link.Attrs().Name) |
| 123 | + } |
| 124 | + } |
| 125 | + return "", fmt.Errorf("no matching link found for pf guid: %s", pfRawConfig.PfGUID) |
| 126 | +} |
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