package netlink import ( "fmt" "net" "os" "strconv" ) // Link represents a link device from netlink. Shared link attributes // like name may be retrieved using the Attrs() method. Unique data // can be retrieved by casting the object to the proper type. type Link interface { Attrs() *LinkAttrs Type() string } type ( NsPid int NsFd int ) // LinkAttrs represents data shared by most link types type LinkAttrs struct { Index int MTU int TxQLen int // Transmit Queue Length Name string HardwareAddr net.HardwareAddr Flags net.Flags RawFlags uint32 ParentIndex int // index of the parent link device MasterIndex int // must be the index of a bridge Namespace interface{} // nil | NsPid | NsFd Alias string Statistics *LinkStatistics Promisc int Allmulti int Multi int Xdp *LinkXdp EncapType string Protinfo *Protinfo OperState LinkOperState PhysSwitchID int NetNsID int NumTxQueues int NumRxQueues int GSOMaxSize uint32 GSOMaxSegs uint32 Vfs []VfInfo // virtual functions available on link Group uint32 Slave LinkSlave } // LinkSlave represents a slave device. type LinkSlave interface { SlaveType() string } // VfInfo represents configuration of virtual function type VfInfo struct { ID int Mac net.HardwareAddr Vlan int Qos int TxRate int // IFLA_VF_TX_RATE Max TxRate Spoofchk bool LinkState uint32 MaxTxRate uint32 // IFLA_VF_RATE Max TxRate MinTxRate uint32 // IFLA_VF_RATE Min TxRate RxPackets uint64 TxPackets uint64 RxBytes uint64 TxBytes uint64 Multicast uint64 Broadcast uint64 RxDropped uint64 TxDropped uint64 RssQuery uint32 Trust uint32 } // LinkOperState represents the values of the IFLA_OPERSTATE link // attribute, which contains the RFC2863 state of the interface. type LinkOperState uint8 const ( OperUnknown = iota // Status can't be determined. OperNotPresent // Some component is missing. OperDown // Down. OperLowerLayerDown // Down due to state of lower layer. OperTesting // In some test mode. OperDormant // Not up but pending an external event. OperUp // Up, ready to send packets. ) func (s LinkOperState) String() string { switch s { case OperNotPresent: return "not-present" case OperDown: return "down" case OperLowerLayerDown: return "lower-layer-down" case OperTesting: return "testing" case OperDormant: return "dormant" case OperUp: return "up" default: return "unknown" } } // NewLinkAttrs returns LinkAttrs structure filled with default values func NewLinkAttrs() LinkAttrs { return LinkAttrs{ NetNsID: -1, TxQLen: -1, } } type LinkStatistics LinkStatistics64 /* Ref: struct rtnl_link_stats {...} */ type LinkStatistics32 struct { RxPackets uint32 TxPackets uint32 RxBytes uint32 TxBytes uint32 RxErrors uint32 TxErrors uint32 RxDropped uint32 TxDropped uint32 Multicast uint32 Collisions uint32 RxLengthErrors uint32 RxOverErrors uint32 RxCrcErrors uint32 RxFrameErrors uint32 RxFifoErrors uint32 RxMissedErrors uint32 TxAbortedErrors uint32 TxCarrierErrors uint32 TxFifoErrors uint32 TxHeartbeatErrors uint32 TxWindowErrors uint32 RxCompressed uint32 TxCompressed uint32 } func (s32 LinkStatistics32) to64() *LinkStatistics64 { return &LinkStatistics64{ RxPackets: uint64(s32.RxPackets), TxPackets: uint64(s32.TxPackets), RxBytes: uint64(s32.RxBytes), TxBytes: uint64(s32.TxBytes), RxErrors: uint64(s32.RxErrors), TxErrors: uint64(s32.TxErrors), RxDropped: uint64(s32.RxDropped), TxDropped: uint64(s32.TxDropped), Multicast: uint64(s32.Multicast), Collisions: uint64(s32.Collisions), RxLengthErrors: uint64(s32.RxLengthErrors), RxOverErrors: uint64(s32.RxOverErrors), RxCrcErrors: uint64(s32.RxCrcErrors), RxFrameErrors: uint64(s32.RxFrameErrors), RxFifoErrors: uint64(s32.RxFifoErrors), RxMissedErrors: uint64(s32.RxMissedErrors), TxAbortedErrors: uint64(s32.TxAbortedErrors), TxCarrierErrors: uint64(s32.TxCarrierErrors), TxFifoErrors: uint64(s32.TxFifoErrors), TxHeartbeatErrors: uint64(s32.TxHeartbeatErrors), TxWindowErrors: uint64(s32.TxWindowErrors), RxCompressed: uint64(s32.RxCompressed), TxCompressed: uint64(s32.TxCompressed), } } /* Ref: struct rtnl_link_stats64 {...} */ type LinkStatistics64 struct { RxPackets uint64 TxPackets uint64 RxBytes uint64 TxBytes uint64 RxErrors uint64 TxErrors uint64 RxDropped uint64 TxDropped uint64 Multicast uint64 Collisions uint64 RxLengthErrors uint64 RxOverErrors uint64 RxCrcErrors uint64 RxFrameErrors uint64 RxFifoErrors uint64 RxMissedErrors uint64 TxAbortedErrors uint64 TxCarrierErrors uint64 TxFifoErrors uint64 TxHeartbeatErrors uint64 TxWindowErrors uint64 RxCompressed uint64 TxCompressed uint64 } type LinkXdp struct { Fd int Attached bool AttachMode uint32 Flags uint32 ProgId uint32 } // Device links cannot be created via netlink. These links // are links created by udev like 'lo' and 'etho0' type Device struct { LinkAttrs } func (device *Device) Attrs() *LinkAttrs { return &device.LinkAttrs } func (device *Device) Type() string { return "device" } // Dummy links are dummy ethernet devices type Dummy struct { LinkAttrs } func (dummy *Dummy) Attrs() *LinkAttrs { return &dummy.LinkAttrs } func (dummy *Dummy) Type() string { return "dummy" } // Ifb links are advanced dummy devices for packet filtering type Ifb struct { LinkAttrs } func (ifb *Ifb) Attrs() *LinkAttrs { return &ifb.LinkAttrs } func (ifb *Ifb) Type() string { return "ifb" } // Bridge links are simple linux bridges type Bridge struct { LinkAttrs MulticastSnooping *bool AgeingTime *uint32 HelloTime *uint32 VlanFiltering *bool } func (bridge *Bridge) Attrs() *LinkAttrs { return &bridge.LinkAttrs } func (bridge *Bridge) Type() string { return "bridge" } // Vlan links have ParentIndex set in their Attrs() type Vlan struct { LinkAttrs VlanId int VlanProtocol VlanProtocol } func (vlan *Vlan) Attrs() *LinkAttrs { return &vlan.LinkAttrs } func (vlan *Vlan) Type() string { return "vlan" } type MacvlanMode uint16 const ( MACVLAN_MODE_DEFAULT MacvlanMode = iota MACVLAN_MODE_PRIVATE MACVLAN_MODE_VEPA MACVLAN_MODE_BRIDGE MACVLAN_MODE_PASSTHRU MACVLAN_MODE_SOURCE ) // Macvlan links have ParentIndex set in their Attrs() type Macvlan struct { LinkAttrs Mode MacvlanMode // MACAddrs is only populated for Macvlan SOURCE links MACAddrs []net.HardwareAddr } func (macvlan *Macvlan) Attrs() *LinkAttrs { return &macvlan.LinkAttrs } func (macvlan *Macvlan) Type() string { return "macvlan" } // Macvtap - macvtap is a virtual interfaces based on macvlan type Macvtap struct { Macvlan } func (macvtap Macvtap) Type() string { return "macvtap" } type TuntapMode uint16 type TuntapFlag uint16 // Tuntap links created via /dev/tun/tap, but can be destroyed via netlink type Tuntap struct { LinkAttrs Mode TuntapMode Flags TuntapFlag NonPersist bool Queues int Fds []*os.File Owner uint32 Group uint32 } func (tuntap *Tuntap) Attrs() *LinkAttrs { return &tuntap.LinkAttrs } func (tuntap *Tuntap) Type() string { return "tuntap" } // Veth devices must specify PeerName on create type Veth struct { LinkAttrs PeerName string // veth on create only PeerHardwareAddr net.HardwareAddr PeerNamespace interface{} } func (veth *Veth) Attrs() *LinkAttrs { return &veth.LinkAttrs } func (veth *Veth) Type() string { return "veth" } // Wireguard represent links of type "wireguard", see https://www.wireguard.com/ type Wireguard struct { LinkAttrs } func (wg *Wireguard) Attrs() *LinkAttrs { return &wg.LinkAttrs } func (wg *Wireguard) Type() string { return "wireguard" } // GenericLink links represent types that are not currently understood // by this netlink library. type GenericLink struct { LinkAttrs LinkType string } func (generic *GenericLink) Attrs() *LinkAttrs { return &generic.LinkAttrs } func (generic *GenericLink) Type() string { return generic.LinkType } type Vxlan struct { LinkAttrs VxlanId int VtepDevIndex int SrcAddr net.IP Group net.IP TTL int TOS int Learning bool Proxy bool RSC bool L2miss bool L3miss bool UDPCSum bool UDP6ZeroCSumTx bool UDP6ZeroCSumRx bool NoAge bool GBP bool FlowBased bool Age int Limit int Port int PortLow int PortHigh int } func (vxlan *Vxlan) Attrs() *LinkAttrs { return &vxlan.LinkAttrs } func (vxlan *Vxlan) Type() string { return "vxlan" } type IPVlanMode uint16 const ( IPVLAN_MODE_L2 IPVlanMode = iota IPVLAN_MODE_L3 IPVLAN_MODE_L3S IPVLAN_MODE_MAX ) type IPVlanFlag uint16 const ( IPVLAN_FLAG_BRIDGE IPVlanFlag = iota IPVLAN_FLAG_PRIVATE IPVLAN_FLAG_VEPA ) type IPVlan struct { LinkAttrs Mode IPVlanMode Flag IPVlanFlag } func (ipvlan *IPVlan) Attrs() *LinkAttrs { return &ipvlan.LinkAttrs } func (ipvlan *IPVlan) Type() string { return "ipvlan" } // IPVtap - IPVtap is a virtual interfaces based on ipvlan type IPVtap struct { IPVlan } func (ipvtap *IPVtap) Attrs() *LinkAttrs { return &ipvtap.LinkAttrs } func (ipvtap IPVtap) Type() string { return "ipvtap" } // VlanProtocol type type VlanProtocol int func (p VlanProtocol) String() string { s, ok := VlanProtocolToString[p] if !ok { return fmt.Sprintf("VlanProtocol(%d)", p) } return s } // StringToVlanProtocol returns vlan protocol, or unknown is the s is invalid. func StringToVlanProtocol(s string) VlanProtocol { mode, ok := StringToVlanProtocolMap[s] if !ok { return VLAN_PROTOCOL_UNKNOWN } return mode } // VlanProtocol possible values const ( VLAN_PROTOCOL_UNKNOWN VlanProtocol = 0 VLAN_PROTOCOL_8021Q VlanProtocol = 0x8100 VLAN_PROTOCOL_8021AD VlanProtocol = 0x88A8 ) var VlanProtocolToString = map[VlanProtocol]string{ VLAN_PROTOCOL_8021Q: "802.1q", VLAN_PROTOCOL_8021AD: "802.1ad", } var StringToVlanProtocolMap = map[string]VlanProtocol{ "802.1q": VLAN_PROTOCOL_8021Q, "802.1ad": VLAN_PROTOCOL_8021AD, } // BondMode type type BondMode int func (b BondMode) String() string { s, ok := bondModeToString[b] if !ok { return fmt.Sprintf("BondMode(%d)", b) } return s } // StringToBondMode returns bond mode, or unknown is the s is invalid. func StringToBondMode(s string) BondMode { mode, ok := StringToBondModeMap[s] if !ok { return BOND_MODE_UNKNOWN } return mode } // Possible BondMode const ( BOND_MODE_BALANCE_RR BondMode = iota BOND_MODE_ACTIVE_BACKUP BOND_MODE_BALANCE_XOR BOND_MODE_BROADCAST BOND_MODE_802_3AD BOND_MODE_BALANCE_TLB BOND_MODE_BALANCE_ALB BOND_MODE_UNKNOWN ) var bondModeToString = map[BondMode]string{ BOND_MODE_BALANCE_RR: "balance-rr", BOND_MODE_ACTIVE_BACKUP: "active-backup", BOND_MODE_BALANCE_XOR: "balance-xor", BOND_MODE_BROADCAST: "broadcast", BOND_MODE_802_3AD: "802.3ad", BOND_MODE_BALANCE_TLB: "balance-tlb", BOND_MODE_BALANCE_ALB: "balance-alb", } var StringToBondModeMap = map[string]BondMode{ "balance-rr": BOND_MODE_BALANCE_RR, "active-backup": BOND_MODE_ACTIVE_BACKUP, "balance-xor": BOND_MODE_BALANCE_XOR, "broadcast": BOND_MODE_BROADCAST, "802.3ad": BOND_MODE_802_3AD, "balance-tlb": BOND_MODE_BALANCE_TLB, "balance-alb": BOND_MODE_BALANCE_ALB, } // BondArpValidate type type BondArpValidate int // Possible BondArpValidate value const ( BOND_ARP_VALIDATE_NONE BondArpValidate = iota BOND_ARP_VALIDATE_ACTIVE BOND_ARP_VALIDATE_BACKUP BOND_ARP_VALIDATE_ALL ) var bondArpValidateToString = map[BondArpValidate]string{ BOND_ARP_VALIDATE_NONE: "none", BOND_ARP_VALIDATE_ACTIVE: "active", BOND_ARP_VALIDATE_BACKUP: "backup", BOND_ARP_VALIDATE_ALL: "none", } var StringToBondArpValidateMap = map[string]BondArpValidate{ "none": BOND_ARP_VALIDATE_NONE, "active": BOND_ARP_VALIDATE_ACTIVE, "backup": BOND_ARP_VALIDATE_BACKUP, "all": BOND_ARP_VALIDATE_ALL, } func (b BondArpValidate) String() string { s, ok := bondArpValidateToString[b] if !ok { return fmt.Sprintf("BondArpValidate(%d)", b) } return s } // BondPrimaryReselect type type BondPrimaryReselect int // Possible BondPrimaryReselect value const ( BOND_PRIMARY_RESELECT_ALWAYS BondPrimaryReselect = iota BOND_PRIMARY_RESELECT_BETTER BOND_PRIMARY_RESELECT_FAILURE ) var bondPrimaryReselectToString = map[BondPrimaryReselect]string{ BOND_PRIMARY_RESELECT_ALWAYS: "always", BOND_PRIMARY_RESELECT_BETTER: "better", BOND_PRIMARY_RESELECT_FAILURE: "failure", } var StringToBondPrimaryReselectMap = map[string]BondPrimaryReselect{ "always": BOND_PRIMARY_RESELECT_ALWAYS, "better": BOND_PRIMARY_RESELECT_BETTER, "failure": BOND_PRIMARY_RESELECT_FAILURE, } func (b BondPrimaryReselect) String() string { s, ok := bondPrimaryReselectToString[b] if !ok { return fmt.Sprintf("BondPrimaryReselect(%d)", b) } return s } // BondArpAllTargets type type BondArpAllTargets int // Possible BondArpAllTargets value const ( BOND_ARP_ALL_TARGETS_ANY BondArpAllTargets = iota BOND_ARP_ALL_TARGETS_ALL ) var bondArpAllTargetsToString = map[BondArpAllTargets]string{ BOND_ARP_ALL_TARGETS_ANY: "any", BOND_ARP_ALL_TARGETS_ALL: "all", } var StringToBondArpAllTargetsMap = map[string]BondArpAllTargets{ "any": BOND_ARP_ALL_TARGETS_ANY, "all": BOND_ARP_ALL_TARGETS_ALL, } func (b BondArpAllTargets) String() string { s, ok := bondArpAllTargetsToString[b] if !ok { return fmt.Sprintf("BondArpAllTargets(%d)", b) } return s } // BondFailOverMac type type BondFailOverMac int // Possible BondFailOverMac value const ( BOND_FAIL_OVER_MAC_NONE BondFailOverMac = iota BOND_FAIL_OVER_MAC_ACTIVE BOND_FAIL_OVER_MAC_FOLLOW ) var bondFailOverMacToString = map[BondFailOverMac]string{ BOND_FAIL_OVER_MAC_NONE: "none", BOND_FAIL_OVER_MAC_ACTIVE: "active", BOND_FAIL_OVER_MAC_FOLLOW: "follow", } var StringToBondFailOverMacMap = map[string]BondFailOverMac{ "none": BOND_FAIL_OVER_MAC_NONE, "active": BOND_FAIL_OVER_MAC_ACTIVE, "follow": BOND_FAIL_OVER_MAC_FOLLOW, } func (b BondFailOverMac) String() string { s, ok := bondFailOverMacToString[b] if !ok { return fmt.Sprintf("BondFailOverMac(%d)", b) } return s } // BondXmitHashPolicy type type BondXmitHashPolicy int func (b BondXmitHashPolicy) String() string { s, ok := bondXmitHashPolicyToString[b] if !ok { return fmt.Sprintf("XmitHashPolicy(%d)", b) } return s } // StringToBondXmitHashPolicy returns bond lacp arte, or unknown is the s is invalid. func StringToBondXmitHashPolicy(s string) BondXmitHashPolicy { lacp, ok := StringToBondXmitHashPolicyMap[s] if !ok { return BOND_XMIT_HASH_POLICY_UNKNOWN } return lacp } // Possible BondXmitHashPolicy value const ( BOND_XMIT_HASH_POLICY_LAYER2 BondXmitHashPolicy = iota BOND_XMIT_HASH_POLICY_LAYER3_4 BOND_XMIT_HASH_POLICY_LAYER2_3 BOND_XMIT_HASH_POLICY_ENCAP2_3 BOND_XMIT_HASH_POLICY_ENCAP3_4 BOND_XMIT_HASH_POLICY_UNKNOWN ) var bondXmitHashPolicyToString = map[BondXmitHashPolicy]string{ BOND_XMIT_HASH_POLICY_LAYER2: "layer2", BOND_XMIT_HASH_POLICY_LAYER3_4: "layer3+4", BOND_XMIT_HASH_POLICY_LAYER2_3: "layer2+3", BOND_XMIT_HASH_POLICY_ENCAP2_3: "encap2+3", BOND_XMIT_HASH_POLICY_ENCAP3_4: "encap3+4", } var StringToBondXmitHashPolicyMap = map[string]BondXmitHashPolicy{ "layer2": BOND_XMIT_HASH_POLICY_LAYER2, "layer3+4": BOND_XMIT_HASH_POLICY_LAYER3_4, "layer2+3": BOND_XMIT_HASH_POLICY_LAYER2_3, "encap2+3": BOND_XMIT_HASH_POLICY_ENCAP2_3, "encap3+4": BOND_XMIT_HASH_POLICY_ENCAP3_4, } // BondLacpRate type type BondLacpRate int func (b BondLacpRate) String() string { s, ok := bondLacpRateToString[b] if !ok { return fmt.Sprintf("LacpRate(%d)", b) } return s } // StringToBondLacpRate returns bond lacp arte, or unknown is the s is invalid. func StringToBondLacpRate(s string) BondLacpRate { lacp, ok := StringToBondLacpRateMap[s] if !ok { return BOND_LACP_RATE_UNKNOWN } return lacp } // Possible BondLacpRate value const ( BOND_LACP_RATE_SLOW BondLacpRate = iota BOND_LACP_RATE_FAST BOND_LACP_RATE_UNKNOWN ) var bondLacpRateToString = map[BondLacpRate]string{ BOND_LACP_RATE_SLOW: "slow", BOND_LACP_RATE_FAST: "fast", } var StringToBondLacpRateMap = map[string]BondLacpRate{ "slow": BOND_LACP_RATE_SLOW, "fast": BOND_LACP_RATE_FAST, } // BondAdSelect type type BondAdSelect int // Possible BondAdSelect value const ( BOND_AD_SELECT_STABLE BondAdSelect = iota BOND_AD_SELECT_BANDWIDTH BOND_AD_SELECT_COUNT ) var bondAdSelectToString = map[BondAdSelect]string{ BOND_AD_SELECT_STABLE: "stable", BOND_AD_SELECT_BANDWIDTH: "bandwidth", BOND_AD_SELECT_COUNT: "count", } var StringToBondAdSelectMap = map[string]BondAdSelect{ "stable": BOND_AD_SELECT_STABLE, "bandwidth": BOND_AD_SELECT_BANDWIDTH, "count": BOND_AD_SELECT_COUNT, } func (b BondAdSelect) String() string { s, ok := bondAdSelectToString[b] if !ok { return fmt.Sprintf("BondAdSelect(%d)", b) } return s } // BondAdInfo represents ad info for bond type BondAdInfo struct { AggregatorId int NumPorts int ActorKey int PartnerKey int PartnerMac net.HardwareAddr } // Bond representation type Bond struct { LinkAttrs Mode BondMode ActiveSlave int Miimon int UpDelay int DownDelay int UseCarrier int ArpInterval int ArpIpTargets []net.IP ArpValidate BondArpValidate ArpAllTargets BondArpAllTargets Primary int PrimaryReselect BondPrimaryReselect FailOverMac BondFailOverMac XmitHashPolicy BondXmitHashPolicy ResendIgmp int NumPeerNotif int AllSlavesActive int MinLinks int LpInterval int PacketsPerSlave int LacpRate BondLacpRate AdSelect BondAdSelect // looking at iproute tool AdInfo can only be retrived. It can't be set. AdInfo *BondAdInfo AdActorSysPrio int AdUserPortKey int AdActorSystem net.HardwareAddr TlbDynamicLb int } func NewLinkBond(atr LinkAttrs) *Bond { return &Bond{ LinkAttrs: atr, Mode: -1, ActiveSlave: -1, Miimon: -1, UpDelay: -1, DownDelay: -1, UseCarrier: -1, ArpInterval: -1, ArpIpTargets: nil, ArpValidate: -1, ArpAllTargets: -1, Primary: -1, PrimaryReselect: -1, FailOverMac: -1, XmitHashPolicy: -1, ResendIgmp: -1, NumPeerNotif: -1, AllSlavesActive: -1, MinLinks: -1, LpInterval: -1, PacketsPerSlave: -1, LacpRate: -1, AdSelect: -1, AdActorSysPrio: -1, AdUserPortKey: -1, AdActorSystem: nil, TlbDynamicLb: -1, } } // Flag mask for bond options. Bond.Flagmask must be set to on for option to work. const ( BOND_MODE_MASK uint64 = 1 << (1 + iota) BOND_ACTIVE_SLAVE_MASK BOND_MIIMON_MASK BOND_UPDELAY_MASK BOND_DOWNDELAY_MASK BOND_USE_CARRIER_MASK BOND_ARP_INTERVAL_MASK BOND_ARP_VALIDATE_MASK BOND_ARP_ALL_TARGETS_MASK BOND_PRIMARY_MASK BOND_PRIMARY_RESELECT_MASK BOND_FAIL_OVER_MAC_MASK BOND_XMIT_HASH_POLICY_MASK BOND_RESEND_IGMP_MASK BOND_NUM_PEER_NOTIF_MASK BOND_ALL_SLAVES_ACTIVE_MASK BOND_MIN_LINKS_MASK BOND_LP_INTERVAL_MASK BOND_PACKETS_PER_SLAVE_MASK BOND_LACP_RATE_MASK BOND_AD_SELECT_MASK ) // Attrs implementation. func (bond *Bond) Attrs() *LinkAttrs { return &bond.LinkAttrs } // Type implementation fro Vxlan. func (bond *Bond) Type() string { return "bond" } // BondSlaveState represents the values of the IFLA_BOND_SLAVE_STATE bond slave // attribute, which contains the state of the bond slave. type BondSlaveState uint8 const ( //BondStateActive Link is active. BondStateActive BondSlaveState = iota //BondStateBackup Link is backup. BondStateBackup ) func (s BondSlaveState) String() string { switch s { case BondStateActive: return "ACTIVE" case BondStateBackup: return "BACKUP" default: return strconv.Itoa(int(s)) } } // BondSlaveMiiStatus represents the values of the IFLA_BOND_SLAVE_MII_STATUS bond slave // attribute, which contains the status of MII link monitoring type BondSlaveMiiStatus uint8 const ( //BondLinkUp link is up and running. BondLinkUp BondSlaveMiiStatus = iota //BondLinkFail link has just gone down. BondLinkFail //BondLinkDown link has been down for too long time. BondLinkDown //BondLinkBack link is going back. BondLinkBack ) func (s BondSlaveMiiStatus) String() string { switch s { case BondLinkUp: return "UP" case BondLinkFail: return "GOING_DOWN" case BondLinkDown: return "DOWN" case BondLinkBack: return "GOING_BACK" default: return strconv.Itoa(int(s)) } } type BondSlave struct { State BondSlaveState MiiStatus BondSlaveMiiStatus LinkFailureCount uint32 PermHardwareAddr net.HardwareAddr QueueId uint16 AggregatorId uint16 AdActorOperPortState uint8 AdPartnerOperPortState uint16 } func (b *BondSlave) SlaveType() string { return "bond" } type VrfSlave struct { Table uint32 } func (v *VrfSlave) SlaveType() string { return "vrf" } // Geneve devices must specify RemoteIP and ID (VNI) on create // https://github.com/torvalds/linux/blob/47ec5303d73ea344e84f46660fff693c57641386/drivers/net/geneve.c#L1209-L1223 type Geneve struct { LinkAttrs ID uint32 // vni Remote net.IP Ttl uint8 Tos uint8 Dport uint16 UdpCsum uint8 UdpZeroCsum6Tx uint8 UdpZeroCsum6Rx uint8 Link uint32 FlowBased bool } func (geneve *Geneve) Attrs() *LinkAttrs { return &geneve.LinkAttrs } func (geneve *Geneve) Type() string { return "geneve" } // Gretap devices must specify LocalIP and RemoteIP on create type Gretap struct { LinkAttrs IKey uint32 OKey uint32 EncapSport uint16 EncapDport uint16 Local net.IP Remote net.IP IFlags uint16 OFlags uint16 PMtuDisc uint8 Ttl uint8 Tos uint8 EncapType uint16 EncapFlags uint16 Link uint32 FlowBased bool } func (gretap *Gretap) Attrs() *LinkAttrs { return &gretap.LinkAttrs } func (gretap *Gretap) Type() string { if gretap.Local.To4() == nil { return "ip6gretap" } return "gretap" } type Iptun struct { LinkAttrs Ttl uint8 Tos uint8 PMtuDisc uint8 Link uint32 Local net.IP Remote net.IP EncapSport uint16 EncapDport uint16 EncapType uint16 EncapFlags uint16 FlowBased bool } func (iptun *Iptun) Attrs() *LinkAttrs { return &iptun.LinkAttrs } func (iptun *Iptun) Type() string { return "ipip" } type Ip6tnl struct { LinkAttrs Link uint32 Local net.IP Remote net.IP Ttl uint8 Tos uint8 Flags uint32 Proto uint8 FlowInfo uint32 EncapLimit uint8 EncapType uint16 EncapFlags uint16 EncapSport uint16 EncapDport uint16 } func (ip6tnl *Ip6tnl) Attrs() *LinkAttrs { return &ip6tnl.LinkAttrs } func (ip6tnl *Ip6tnl) Type() string { return "ip6tnl" } // from https://elixir.bootlin.com/linux/v5.15.4/source/include/uapi/linux/if_tunnel.h#L84 type TunnelEncapType uint16 const ( None TunnelEncapType = iota FOU GUE ) // from https://elixir.bootlin.com/linux/v5.15.4/source/include/uapi/linux/if_tunnel.h#L91 type TunnelEncapFlag uint16 const ( CSum TunnelEncapFlag = 1 << 0 CSum6 = 1 << 1 RemCSum = 1 << 2 ) // from https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/ip6_tunnel.h#L12 type IP6TunnelFlag uint16 const ( IP6_TNL_F_IGN_ENCAP_LIMIT IP6TunnelFlag = 1 // don't add encapsulation limit if one isn't present in inner packet IP6_TNL_F_USE_ORIG_TCLASS = 2 // copy the traffic class field from the inner packet IP6_TNL_F_USE_ORIG_FLOWLABEL = 4 // copy the flowlabel from the inner packet IP6_TNL_F_MIP6_DEV = 8 // being used for Mobile IPv6 IP6_TNL_F_RCV_DSCP_COPY = 10 // copy DSCP from the outer packet IP6_TNL_F_USE_ORIG_FWMARK = 20 // copy fwmark from inner packet IP6_TNL_F_ALLOW_LOCAL_REMOTE = 40 // allow remote endpoint on the local node ) type Sittun struct { LinkAttrs Link uint32 Ttl uint8 Tos uint8 PMtuDisc uint8 Proto uint8 Local net.IP Remote net.IP EncapLimit uint8 EncapType uint16 EncapFlags uint16 EncapSport uint16 EncapDport uint16 } func (sittun *Sittun) Attrs() *LinkAttrs { return &sittun.LinkAttrs } func (sittun *Sittun) Type() string { return "sit" } type Vti struct { LinkAttrs IKey uint32 OKey uint32 Link uint32 Local net.IP Remote net.IP } func (vti *Vti) Attrs() *LinkAttrs { return &vti.LinkAttrs } func (vti *Vti) Type() string { if vti.Local.To4() == nil { return "vti6" } return "vti" } type Gretun struct { LinkAttrs Link uint32 IFlags uint16 OFlags uint16 IKey uint32 OKey uint32 Local net.IP Remote net.IP Ttl uint8 Tos uint8 PMtuDisc uint8 EncapType uint16 EncapFlags uint16 EncapSport uint16 EncapDport uint16 } func (gretun *Gretun) Attrs() *LinkAttrs { return &gretun.LinkAttrs } func (gretun *Gretun) Type() string { if gretun.Local.To4() == nil { return "ip6gre" } return "gre" } type Vrf struct { LinkAttrs Table uint32 } func (vrf *Vrf) Attrs() *LinkAttrs { return &vrf.LinkAttrs } func (vrf *Vrf) Type() string { return "vrf" } type GTP struct { LinkAttrs FD0 int FD1 int Role int PDPHashsize int } func (gtp *GTP) Attrs() *LinkAttrs { return >p.LinkAttrs } func (gtp *GTP) Type() string { return "gtp" } // Virtual XFRM Interfaces // Named "xfrmi" to prevent confusion with XFRM objects type Xfrmi struct { LinkAttrs Ifid uint32 } func (xfrm *Xfrmi) Attrs() *LinkAttrs { return &xfrm.LinkAttrs } func (xfrm *Xfrmi) Type() string { return "xfrm" } // IPoIB interface type IPoIBMode uint16 func (m *IPoIBMode) String() string { str, ok := iPoIBModeToString[*m] if !ok { return fmt.Sprintf("mode(%d)", *m) } return str } const ( IPOIB_MODE_DATAGRAM = iota IPOIB_MODE_CONNECTED ) var iPoIBModeToString = map[IPoIBMode]string{ IPOIB_MODE_DATAGRAM: "datagram", IPOIB_MODE_CONNECTED: "connected", } var StringToIPoIBMode = map[string]IPoIBMode{ "datagram": IPOIB_MODE_DATAGRAM, "connected": IPOIB_MODE_CONNECTED, } const ( CAN_STATE_ERROR_ACTIVE = iota CAN_STATE_ERROR_WARNING CAN_STATE_ERROR_PASSIVE CAN_STATE_BUS_OFF CAN_STATE_STOPPED CAN_STATE_SLEEPING ) type Can struct { LinkAttrs BitRate uint32 SamplePoint uint32 TimeQuanta uint32 PropagationSegment uint32 PhaseSegment1 uint32 PhaseSegment2 uint32 SyncJumpWidth uint32 BitRatePreScaler uint32 Name string TimeSegment1Min uint32 TimeSegment1Max uint32 TimeSegment2Min uint32 TimeSegment2Max uint32 SyncJumpWidthMax uint32 BitRatePreScalerMin uint32 BitRatePreScalerMax uint32 BitRatePreScalerInc uint32 ClockFrequency uint32 State uint32 Mask uint32 Flags uint32 TxError uint16 RxError uint16 RestartMs uint32 } func (can *Can) Attrs() *LinkAttrs { return &can.LinkAttrs } func (can *Can) Type() string { return "can" } type IPoIB struct { LinkAttrs Pkey uint16 Mode IPoIBMode Umcast uint16 } func (ipoib *IPoIB) Attrs() *LinkAttrs { return &ipoib.LinkAttrs } func (ipoib *IPoIB) Type() string { return "ipoib" } type BareUDP struct { LinkAttrs Port uint16 EtherType uint16 SrcPortMin uint16 MultiProto bool } func (bareudp *BareUDP) Attrs() *LinkAttrs { return &bareudp.LinkAttrs } func (bareudp *BareUDP) Type() string { return "bareudp" } // iproute2 supported devices; // vlan | veth | vcan | dummy | ifb | macvlan | macvtap | // bridge | bond | ipoib | ip6tnl | ipip | sit | vxlan | // gre | gretap | ip6gre | ip6gretap | vti | vti6 | nlmon | // bond_slave | ipvlan | xfrm | bareudp // LinkNotFoundError wraps the various not found errors when // getting/reading links. This is intended for better error // handling by dependent code so that "not found error" can // be distinguished from other errors type LinkNotFoundError struct { error }