func (entry *flowEntry) importInstructions(instructions ofp4.Instruction) error {
for _, inst := range instructions.Iter() {
switch inst.Type() {
default:
return ofp4.MakeErrorMsg(
ofp4.OFPET_BAD_INSTRUCTION,
ofp4.OFPBIC_UNKNOWN_INST,
)
case ofp4.OFPIT_GOTO_TABLE:
entry.instGoto = ofp4.InstructionGotoTable(inst).TableId()
case ofp4.OFPIT_WRITE_METADATA:
i := ofp4.InstructionWriteMetadata(inst)
if i.Metadata()&^i.MetadataMask() != 0 {
return errors.New("invalid value/mask pair")
}
entry.instMetadata = &metadataInstruction{
i.Metadata(),
i.MetadataMask(),
}
case ofp4.OFPIT_WRITE_ACTIONS, ofp4.OFPIT_APPLY_ACTIONS, ofp4.OFPIT_CLEAR_ACTIONS:
i := ofp4.InstructionActions(inst)
switch inst.Type() {
case ofp4.OFPIT_WRITE_ACTIONS:
var aset actionSet
if err := aset.UnmarshalBinary(i.Actions()); err != nil {
return err
}
entry.instWrite = aset
case ofp4.OFPIT_APPLY_ACTIONS:
var alist actionList
if err := alist.UnmarshalBinary(i.Actions()); err != nil {
return err
}
entry.instApply = alist
case ofp4.OFPIT_CLEAR_ACTIONS:
entry.instClear = true
}
case ofp4.OFPIT_METER:
entry.instMeter = ofp4.InstructionMeter(inst).MeterId()
case ofp4.OFPIT_EXPERIMENTER:
experimenter := ofp4.InstructionExperimenter(inst).Experimenter()
data := inst[8:]
if handler, ok := instructionHandlers[experimenter]; ok {
pos := handler.Order(data)
entry.instExp[pos] = append(entry.instExp[pos], instExperimenter{
Experimenter: experimenter,
Data: data,
Handler: handler,
})
} else {
return ofp4.MakeErrorMsg(ofp4.OFPET_BAD_INSTRUCTION, ofp4.OFPBIC_UNSUP_INST)
}
}
}
return nil
}
func (self *flowTableFeature) importProps(props ofp4.TableFeaturePropHeader) error {
for _, prop := range props.Iter() {
switch prop.Type() {
case ofp4.OFPTFPT_INSTRUCTIONS, ofp4.OFPTFPT_INSTRUCTIONS_MISS:
var ids []instructionKey
for _, inst := range ofp4.TableFeaturePropInstructions(prop).InstructionIds().Iter() {
if inst.Type() == ofp4.OFPIT_EXPERIMENTER {
ids = append(ids, ofp4.InstructionExperimenter(inst).Experimenter())
} else {
ids = append(ids, inst.Type())
}
}
switch prop.Type() {
case ofp4.OFPTFPT_INSTRUCTIONS:
self.hit.inst = ids
case ofp4.OFPTFPT_INSTRUCTIONS_MISS:
self.miss.inst = ids
}
case ofp4.OFPTFPT_NEXT_TABLES:
self.hit.next = ofp4.TableFeaturePropNextTables(prop).NextTableIds()
case ofp4.OFPTFPT_NEXT_TABLES_MISS:
self.miss.next = ofp4.TableFeaturePropNextTables(prop).NextTableIds()
case ofp4.OFPTFPT_WRITE_ACTIONS, ofp4.OFPTFPT_WRITE_ACTIONS_MISS,
ofp4.OFPTFPT_APPLY_ACTIONS, ofp4.OFPTFPT_APPLY_ACTIONS_MISS:
var ids []actionKey
for _, act := range ofp4.TableFeaturePropActions(prop).ActionIds().Iter() {
if act.Type() == ofp4.OFPAT_EXPERIMENTER {
ids = append(ids, ofp4.ActionExperimenterHeader(act).Experimenter())
} else {
ids = append(ids, act.Type())
}
}
switch prop.Type() {
case ofp4.OFPTFPT_WRITE_ACTIONS:
self.hit.writeActions = ids
case ofp4.OFPTFPT_WRITE_ACTIONS_MISS:
self.miss.writeActions = ids
case ofp4.OFPTFPT_APPLY_ACTIONS:
self.hit.applyActions = ids
case ofp4.OFPTFPT_APPLY_ACTIONS_MISS:
self.miss.applyActions = ids
}
case ofp4.OFPTFPT_MATCH, ofp4.OFPTFPT_WILDCARDS,
ofp4.OFPTFPT_WRITE_SETFIELD, ofp4.OFPTFPT_WRITE_SETFIELD_MISS,
ofp4.OFPTFPT_APPLY_SETFIELD, ofp4.OFPTFPT_APPLY_SETFIELD_MISS:
var ids []oxmId
for _, oxm := range ofp4.TableFeaturePropOxm(prop).OxmIds().Iter() {
hdr := oxm.Header()
if hdr.Class() == ofp4.OFPXMC_EXPERIMENTER {
exp := ofp4.OxmExperimenterHeader(oxm).Experimenter()
ids = append(ids, [...]uint32{oxmHandlers[exp].OxmId(uint32(oxm.Header())), exp})
} else {
ids = append(ids, hdr.Type())
}
}
switch prop.Type() {
case ofp4.OFPTFPT_MATCH:
self.match = ids
case ofp4.OFPTFPT_WILDCARDS:
self.wildcards = ids
case ofp4.OFPTFPT_WRITE_SETFIELD:
self.hit.writeSetfield = ids
case ofp4.OFPTFPT_WRITE_SETFIELD_MISS:
self.miss.writeSetfield = ids
case ofp4.OFPTFPT_APPLY_SETFIELD:
self.hit.applySetfield = ids
case ofp4.OFPTFPT_APPLY_SETFIELD_MISS:
self.miss.applySetfield = ids
}
case ofp4.OFPTFPT_EXPERIMENTER, ofp4.OFPTFPT_EXPERIMENTER_MISS:
msg := ofp4.TableFeaturePropExperimenter(prop)
eKey := experimenterKey{
Experimenter: msg.Experimenter(),
ExpType: msg.ExpType(),
}
if _, ok := tableHandlers[eKey]; !ok {
return ofp4.MakeErrorMsg(
ofp4.OFPET_TABLE_FEATURES_FAILED,
ofp4.OFPTFFC_BAD_ARGUMENT,
)
}
exp := experimenterProp{
experimenterKey: eKey,
Data: msg.ExperimenterData(),
}
switch prop.Type() {
case ofp4.OFPTFPT_EXPERIMENTER:
self.hit.experimenter = append(self.hit.experimenter, exp)
case ofp4.OFPTFPT_EXPERIMENTER_MISS:
self.miss.experimenter = append(self.hit.experimenter, exp)
}
}
}
return nil
}
