forked from contiv/libOpenflow
/
nxt_message.go
259 lines (232 loc) · 5.38 KB
/
nxt_message.go
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package openflow13
import (
"encoding/binary"
"errors"
"antrea.io/libOpenflow/util"
)
// Nicira extension messages.
const (
Type_SetFlowFormat = 12
Type_FlowModTableId = 15
Type_SetPacketInFormat = 16
Type_SetControllerId = 20
Type_TlvTableMod = 24
Type_TlvTableRequest = 25
Type_TlvTableReply = 26
Type_Resume = 28
Type_CtFlushZone = 29
)
// ofpet_tlv_table_mod_failed_code 1.3
const (
OFPERR_NXTTMFC_BAD_COMMAND = 16
OFPERR_NXTTMFC_BAD_OPT_LEN = 17
ERR_NXTTMFC_BAD_FIELD_IDX = 18
OFPERR_NXTTMFC_TABLE_FULL = 19
OFPERR_NXTTMFC_ALREADY_MAPPED = 20
OFPERR_NXTTMFC_DUP_ENTRY = 21
OFPERR_NXTTMFC_INVALID_TLV_DEL = 38
)
func NewNXTVendorHeader(msgType uint32) *VendorHeader {
h := NewOfp13Header()
h.Type = Type_Experimenter
return &VendorHeader{
Header: h,
Vendor: NxExperimenterID,
ExperimenterType: msgType,
}
}
type ControllerID struct {
pad [6]byte
ID uint16
}
func (c *ControllerID) Len() uint16 {
return uint16(len(c.pad) + 2)
}
func (c *ControllerID) MarshalBinary() (data []byte, err error) {
data = make([]byte, int(c.Len()))
n := 6
binary.BigEndian.PutUint16(data[n:], c.ID)
return data, nil
}
func (c *ControllerID) UnmarshalBinary(data []byte) error {
if len(data) < int(c.Len()) {
return errors.New("the []byte is too short to unmarshal a full ControllerID message")
}
n := 6
c.ID = binary.BigEndian.Uint16(data[n:])
return nil
}
func NewSetControllerID(id uint16) *VendorHeader {
msg := NewNXTVendorHeader(Type_SetControllerId)
msg.VendorData = &ControllerID{
ID: id,
}
return msg
}
type TLVTableMap struct {
OptClass uint16
OptType uint8
OptLength uint8
Index uint16
pad [2]byte
}
func (t *TLVTableMap) Len() uint16 {
return uint16(len(t.pad) + 6)
}
func (t *TLVTableMap) MarshalBinary() (data []byte, err error) {
data = make([]byte, int(t.Len()))
n := 0
binary.BigEndian.PutUint16(data[n:], t.OptClass)
n += 2
data[n] = t.OptType
n += 1
data[n] = t.OptLength
n += 1
binary.BigEndian.PutUint16(data[n:], t.Index)
return data, nil
}
func (t *TLVTableMap) UnmarshalBinary(data []byte) error {
if len(data) < int(t.Len()) {
return errors.New("the []byte is too short to unmarshal a full TLVTableMap message")
}
n := 0
t.OptClass = binary.BigEndian.Uint16(data[n:])
n += 2
t.OptType = data[n]
n += 1
t.OptLength = data[n]
n += 1
t.Index = binary.BigEndian.Uint16(data[n:])
return nil
}
type TLVTableMod struct {
Command uint16
pad [6]byte
TlvMaps []*TLVTableMap
}
func (t *TLVTableMod) Len() uint16 {
length := uint16(8)
for _, tlvMap := range t.TlvMaps {
length += tlvMap.Len()
}
return length
}
func (t *TLVTableMod) MarshalBinary() (data []byte, err error) {
data = make([]byte, t.Len())
n := 0
binary.BigEndian.PutUint16(data[n:], t.Command)
n += 2
n += 6
for _, tlvMap := range t.TlvMaps {
tlvData, err := tlvMap.MarshalBinary()
if err != nil {
return nil, err
}
copy(data[n:], tlvData)
n += len(tlvData)
}
return data, nil
}
func (t *TLVTableMod) UnmarshalBinary(data []byte) error {
if len(data) < 8 {
return errors.New("the []byte is too short to unmarshal a full TLVTableMod message")
}
n := 0
t.Command = binary.BigEndian.Uint16(data[n:])
n += 2
n += 6
for n < len(data) {
tlvMap := new(TLVTableMap)
err := tlvMap.UnmarshalBinary(data[n:])
if err != nil {
return err
}
n += int(tlvMap.Len())
t.TlvMaps = append(t.TlvMaps, tlvMap)
}
return nil
}
func NewTLVTableMod(command uint16, tlvMaps []*TLVTableMap) *TLVTableMod {
return &TLVTableMod{
Command: command,
TlvMaps: tlvMaps,
}
}
func NewTLVTableModMessage(tlvMod *TLVTableMod) *VendorHeader {
msg := NewNXTVendorHeader(Type_TlvTableMod)
msg.VendorData = tlvMod
return msg
}
type TLVTableReply struct {
MaxSpace uint32
MaxFields uint16
reserved [10]byte
TlvMaps []*TLVTableMap
}
func (t *TLVTableReply) Len() uint16 {
length := uint16(16)
for _, tlvMap := range t.TlvMaps {
length += tlvMap.Len()
}
return length
}
func (t *TLVTableReply) MarshalBinary() (data []byte, err error) {
data = make([]byte, t.Len())
n := 0
binary.BigEndian.PutUint32(data[n:], t.MaxSpace)
n += 4
binary.BigEndian.PutUint16(data[n:], t.MaxFields)
n += 2
n += 10
for _, tlvMap := range t.TlvMaps {
tlvData, err := tlvMap.MarshalBinary()
if err != nil {
return nil, err
}
copy(data[n:], tlvData)
n += len(tlvData)
}
return data, nil
}
func (t *TLVTableReply) UnmarshalBinary(data []byte) error {
n := 0
t.MaxSpace = binary.BigEndian.Uint32(data[n:])
n += 4
t.MaxFields = binary.BigEndian.Uint16(data[n:])
n += 2
t.reserved = [10]byte{}
copy(t.reserved[0:], data[n:n+10])
n += 10
for n < len(data) {
tlvMap := new(TLVTableMap)
err := tlvMap.UnmarshalBinary(data[n:])
if err != nil {
return err
}
n += int(tlvMap.Len())
t.TlvMaps = append(t.TlvMaps, tlvMap)
}
return nil
}
func NewTLVTableRequest() *VendorHeader {
return NewNXTVendorHeader(Type_TlvTableRequest)
}
func decodeVendorData(experimenterType uint32, data []byte) (msg util.Message, err error) {
switch experimenterType {
case Type_SetControllerId:
msg = new(ControllerID)
case Type_TlvTableMod:
msg = new(TLVTableMod)
case Type_TlvTableReply:
msg = new(TLVTableReply)
case Type_BundleCtrl:
msg = new(BundleControl)
case Type_BundleAdd:
msg = new(BundleAdd)
}
err = msg.UnmarshalBinary(data)
if err != nil {
return nil, err
}
return msg, err
}