add support for CAN

link.go

@@ -1068,6 +1068,58 @@ var StringToIPoIBMode = map[string]IPoIBMode{
 	"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

link_linux.go

@@ -1693,6 +1693,8 @@ func LinkDeserialize(hdr *unix.NlMsghdr, m []byte) (Link, error) {
 						link = &Tuntap{}
 					case "ipoib":
 						link = &IPoIB{}
+					case "can":
+						link = &Can{}
 					default:
 						link = &GenericLink{LinkType: linkType}
 					}
@@ -1742,6 +1744,8 @@ func LinkDeserialize(hdr *unix.NlMsghdr, m []byte) (Link, error) {
 						parseTuntapData(link, data)
 					case "ipoib":
 						parseIPoIBData(link, data)
+					case "can":
+						parseCanData(link, data)
 					}
 				case nl.IFLA_INFO_SLAVE_KIND:
 					slaveType = string(info.Value[:len(info.Value)-1])
@@ -3172,6 +3176,54 @@ func parseIPoIBData(link Link, data []syscall.NetlinkRouteAttr) {
 	}
 }
 
+func parseCanData(link Link, data []syscall.NetlinkRouteAttr) {
+	can := link.(*Can)
+	for _, datum := range data {
+
+		switch datum.Attr.Type {
+		case nl.IFLA_CAN_BITTIMING:
+			can.BitRate = native.Uint32(datum.Value)
+			can.SamplePoint = native.Uint32(datum.Value[4:])
+			can.TimeQuanta = native.Uint32(datum.Value[8:])
+			can.PropagationSegment = native.Uint32(datum.Value[12:])
+			can.PhaseSegment1 = native.Uint32(datum.Value[16:])
+			can.PhaseSegment2 = native.Uint32(datum.Value[20:])
+			can.SyncJumpWidth = native.Uint32(datum.Value[24:])
+			can.BitRatePreScaler = native.Uint32(datum.Value[28:])
+		case nl.IFLA_CAN_BITTIMING_CONST:
+			can.Name = string(datum.Value[:16])
+			can.TimeSegment1Min = native.Uint32(datum.Value[16:])
+			can.TimeSegment1Max = native.Uint32(datum.Value[20:])
+			can.TimeSegment2Min = native.Uint32(datum.Value[24:])
+			can.TimeSegment2Max = native.Uint32(datum.Value[28:])
+			can.SyncJumpWidthMax = native.Uint32(datum.Value[32:])
+			can.BitRatePreScalerMin = native.Uint32(datum.Value[36:])
+			can.BitRatePreScalerMax = native.Uint32(datum.Value[40:])
+			can.BitRatePreScalerInc = native.Uint32(datum.Value[44:])
+		case nl.IFLA_CAN_CLOCK:
+			can.ClockFrequency = native.Uint32(datum.Value)
+		case nl.IFLA_CAN_STATE:
+			can.State = native.Uint32(datum.Value)
+		case nl.IFLA_CAN_CTRLMODE:
+			can.Mask = native.Uint32(datum.Value)
+			can.Flags = native.Uint32(datum.Value[4:])
+		case nl.IFLA_CAN_BERR_COUNTER:
+			can.TxError = native.Uint16(datum.Value)
+			can.RxError = native.Uint16(datum.Value[2:])
+		case nl.IFLA_CAN_RESTART_MS:
+			can.RestartMs = native.Uint32(datum.Value)
+		case nl.IFLA_CAN_DATA_BITTIMING_CONST:
+		case nl.IFLA_CAN_RESTART:
+		case nl.IFLA_CAN_DATA_BITTIMING:
+		case nl.IFLA_CAN_TERMINATION:
+		case nl.IFLA_CAN_TERMINATION_CONST:
+		case nl.IFLA_CAN_BITRATE_CONST:
+		case nl.IFLA_CAN_DATA_BITRATE_CONST:
+		case nl.IFLA_CAN_BITRATE_MAX:
+		}
+	}
+}
+
 func addIPoIBAttrs(ipoib *IPoIB, linkInfo *nl.RtAttr) {
 	data := linkInfo.AddRtAttr(nl.IFLA_INFO_DATA, nil)
 	data.AddRtAttr(nl.IFLA_IPOIB_PKEY, nl.Uint16Attr(uint16(ipoib.Pkey)))

nl/link_linux.go

@@ -673,3 +673,23 @@ const (
 	IFLA_IPOIB_UMCAST
 	IFLA_IPOIB_MAX = IFLA_IPOIB_UMCAST
 )
+
+const (
+	IFLA_CAN_UNSPEC = iota
+	IFLA_CAN_BITTIMING
+	IFLA_CAN_BITTIMING_CONST
+	IFLA_CAN_CLOCK
+	IFLA_CAN_STATE
+	IFLA_CAN_CTRLMODE
+	IFLA_CAN_RESTART_MS
+	IFLA_CAN_RESTART
+	IFLA_CAN_BERR_COUNTER
+	IFLA_CAN_DATA_BITTIMING
+	IFLA_CAN_DATA_BITTIMING_CONST
+	IFLA_CAN_TERMINATION
+	IFLA_CAN_TERMINATION_CONST
+	IFLA_CAN_BITRATE_CONST
+	IFLA_CAN_DATA_BITRATE_CONST
+	IFLA_CAN_BITRATE_MAX
+	IFLA_CAN_MAX = IFLA_CAN_BITRATE_MAX
+)