func UpdatePathAggregator4ByteAs(msg *bgp.BGPUpdate) error {
var aggAttr *bgp.PathAttributeAggregator
var agg4Attr *bgp.PathAttributeAs4Aggregator
agg4AttrPos := 0
for i, attr := range msg.PathAttributes {
switch attr.(type) {
case *bgp.PathAttributeAggregator:
attr := attr.(*bgp.PathAttributeAggregator)
if attr.Value.Askind == reflect.Uint16 {
aggAttr = attr
aggAttr.Value.Askind = reflect.Uint32
}
case *bgp.PathAttributeAs4Aggregator:
agg4Attr = attr.(*bgp.PathAttributeAs4Aggregator)
agg4AttrPos = i
}
}
if aggAttr == nil && agg4Attr == nil {
return nil
}
if aggAttr == nil && agg4Attr != nil {
return bgp.NewMessageError(bgp.BGP_ERROR_UPDATE_MESSAGE_ERROR, bgp.BGP_ERROR_SUB_MALFORMED_ATTRIBUTE_LIST, nil, "AS4 AGGREGATOR attribute exists, but AGGREGATOR doesn't")
}
if agg4Attr != nil {
msg.PathAttributes = append(msg.PathAttributes[:agg4AttrPos], msg.PathAttributes[agg4AttrPos+1:]...)
aggAttr.Value.AS = agg4Attr.Value.AS
}
return nil
}
func (fsm *FSM) sendNotification(code, subType uint8, data []byte, msg string) error {
e := bgp.NewMessageError(code, subType, data, msg)
return fsm.sendNotificationFromErrorMsg(e.(*bgp.MessageError))
}