diff options
Diffstat (limited to 'packet')
| -rw-r--r-- | packet/bgp.go | 132 | ||||
| -rw-r--r-- | packet/bgp_test.go | 5 |
2 files changed, 96 insertions, 41 deletions
diff --git a/packet/bgp.go b/packet/bgp.go index 1cece5e5..1d7b65cc 100644 --- a/packet/bgp.go +++ b/packet/bgp.go @@ -98,33 +98,36 @@ const ( type ExtendedCommunityAttrSubType uint8 const ( - EC_SUBTYPE_ORIGIN_VALIDATION ExtendedCommunityAttrSubType = 0x00 - EC_SUBTYPE_ROUTE_TARGET ExtendedCommunityAttrSubType = 0x02 - EC_SUBTYPE_ROUTE_ORIGIN ExtendedCommunityAttrSubType = 0x03 - EC_SUBTYPE_LINK_BANDWIDTH ExtendedCommunityAttrSubType = 0x04 - EC_SUBTYPE_GENERIC ExtendedCommunityAttrSubType = 0x04 - EC_SUBTYPE_OSPF_DOMAIN_ID ExtendedCommunityAttrSubType = 0x05 - EC_SUBTYPE_OSPF_ROUTE_TYPE ExtendedCommunityAttrSubType = 0x06 - EC_SUBTYPE_OSPF_ROUTE_ID ExtendedCommunityAttrSubType = 0x07 - EC_SUBTYPE_BGP_DATA_COLLECTION ExtendedCommunityAttrSubType = 0x08 - EC_SUBTYPE_SOURCE_AS ExtendedCommunityAttrSubType = 0x09 - EC_SUBTYPE_L2VPN_ID ExtendedCommunityAttrSubType = 0x0A - EC_SUBTYPE_L2_INFO ExtendedCommunityAttrSubType = 0x0A - EC_SUBTYPE_VRF_ROUTE_IMPORT ExtendedCommunityAttrSubType = 0x0B - EC_SUBTYPE_COLOR ExtendedCommunityAttrSubType = 0x0B - EC_SUBTYPE_ENCAPSULATION ExtendedCommunityAttrSubType = 0x0C - EC_SUBTYPE_DEFAULT_GATEWAY ExtendedCommunityAttrSubType = 0x0D - EC_SUBTYPE_CISCO_VPN_DISTINGUISHER ExtendedCommunityAttrSubType = 0x10 - EC_SUBTYPE_UUID_BASED_RT ExtendedCommunityAttrSubType = 0x11 - - EC_SUBTYPE_FLOWSPEC_TRAFFIC_RATE ExtendedCommunityAttrSubType = 0x06 - EC_SUBTYPE_FLOWSPEC_TRAFFIC_ACTION ExtendedCommunityAttrSubType = 0x07 - EC_SUBTYPE_FLOWSPEC_REDIRECT ExtendedCommunityAttrSubType = 0x08 - EC_SUBTYPE_FLOWSPEC_TRAFFIC_REMARK ExtendedCommunityAttrSubType = 0x09 - - EC_SUBTYPE_MAC_MOBILITY ExtendedCommunityAttrSubType = 0x00 - EC_SUBTYPE_ESI_LABEL ExtendedCommunityAttrSubType = 0x01 - EC_SUBTYPE_ES_IMPORT ExtendedCommunityAttrSubType = 0x02 + EC_SUBTYPE_ROUTE_TARGET ExtendedCommunityAttrSubType = 0x02 // EC_TYPE: 0x00, 0x01, 0x02 + EC_SUBTYPE_ROUTE_ORIGIN ExtendedCommunityAttrSubType = 0x03 // EC_TYPE: 0x00, 0x01, 0x02 + EC_SUBTYPE_LINK_BANDWIDTH ExtendedCommunityAttrSubType = 0x04 // EC_TYPE: 0x40 + EC_SUBTYPE_GENERIC ExtendedCommunityAttrSubType = 0x04 // EC_TYPE: 0x02, 0x42 + EC_SUBTYPE_OSPF_DOMAIN_ID ExtendedCommunityAttrSubType = 0x05 // EC_TYPE: 0x00, 0x01, 0x02 + EC_SUBTYPE_OSPF_ROUTE_ID ExtendedCommunityAttrSubType = 0x07 // EC_TYPE: 0x01 + EC_SUBTYPE_BGP_DATA_COLLECTION ExtendedCommunityAttrSubType = 0x08 // EC_TYPE: 0x00, 0x02 + EC_SUBTYPE_SOURCE_AS ExtendedCommunityAttrSubType = 0x09 // EC_TYPE: 0x00, 0x02 + EC_SUBTYPE_L2VPN_ID ExtendedCommunityAttrSubType = 0x0A // EC_TYPE: 0x00, 0x01 + EC_SUBTYPE_VRF_ROUTE_IMPORT ExtendedCommunityAttrSubType = 0x0B // EC_TYPE: 0x01 + EC_SUBTYPE_CISCO_VPN_DISTINGUISHER ExtendedCommunityAttrSubType = 0x10 // EC_TYPE: 0x00, 0x01, 0x02 + + EC_SUBTYPE_OSPF_ROUTE_TYPE ExtendedCommunityAttrSubType = 0x06 // EC_TYPE: 0x03 + EC_SUBTYPE_COLOR ExtendedCommunityAttrSubType = 0x0B // EC_TYPE: 0x03 + EC_SUBTYPE_ENCAPSULATION ExtendedCommunityAttrSubType = 0x0C // EC_TYPE: 0x03 + EC_SUBTYPE_DEFAULT_GATEWAY ExtendedCommunityAttrSubType = 0x0D // EC_TYPE: 0x03 + + EC_SUBTYPE_ORIGIN_VALIDATION ExtendedCommunityAttrSubType = 0x00 // EC_TYPE: 0x43 + + EC_SUBTYPE_FLOWSPEC_TRAFFIC_RATE ExtendedCommunityAttrSubType = 0x06 // EC_TYPE: 0x80 + EC_SUBTYPE_FLOWSPEC_TRAFFIC_ACTION ExtendedCommunityAttrSubType = 0x07 // EC_TYPE: 0x80 + EC_SUBTYPE_FLOWSPEC_REDIRECT ExtendedCommunityAttrSubType = 0x08 // EC_TYPE: 0x80 + EC_SUBTYPE_FLOWSPEC_TRAFFIC_REMARK ExtendedCommunityAttrSubType = 0x09 // EC_TYPE: 0x80 + EC_SUBTYPE_L2_INFO ExtendedCommunityAttrSubType = 0x0A // EC_TYPE: 0x80 + + EC_SUBTYPE_MAC_MOBILITY ExtendedCommunityAttrSubType = 0x00 // EC_TYPE: 0x06 + EC_SUBTYPE_ESI_LABEL ExtendedCommunityAttrSubType = 0x01 // EC_TYPE: 0x06 + EC_SUBTYPE_ES_IMPORT ExtendedCommunityAttrSubType = 0x02 // EC_TYPE: 0x06 + + EC_SUBTYPE_UUID_BASED_RT ExtendedCommunityAttrSubType = 0x11 ) type TunnelType uint16 @@ -4602,6 +4605,41 @@ func (v *DefaultOpaqueExtendedValue) String() string { return fmt.Sprintf("%d", d) } +type ValidationState uint8 + +const ( + VALIDATION_STATE_VALID ValidationState = 0 + VALIDATION_STATE_NOT_FOUND ValidationState = 1 + VALIDATION_STATE_INVALID ValidationState = 2 +) + +func (s ValidationState) String() string { + switch s { + case VALIDATION_STATE_VALID: + return "valid" + case VALIDATION_STATE_NOT_FOUND: + return "not-found" + case VALIDATION_STATE_INVALID: + return "invalid" + } + return fmt.Sprintf("unknown validatation state(%d)", s) +} + +type ValidationExtended struct { + Value ValidationState +} + +func (e *ValidationExtended) Serialize() ([]byte, error) { + buf := make([]byte, 7) + buf[0] = byte(EC_SUBTYPE_ORIGIN_VALIDATION) + buf[6] = byte(e.Value) + return buf, nil +} + +func (e *ValidationExtended) String() string { + return e.Value.String() +} + type ColorExtended struct { Value uint32 } @@ -4663,20 +4701,33 @@ func (e *OpaqueExtended) DecodeFromBytes(data []byte) error { } e.SubType = ExtendedCommunityAttrSubType(data[0]) - switch e.SubType { - case EC_SUBTYPE_COLOR: - v := binary.BigEndian.Uint32(data[3:7]) - e.Value = &ColorExtended{ - Value: v, - } - case EC_SUBTYPE_ENCAPSULATION: - t := TunnelType(binary.BigEndian.Uint16(data[5:7])) - e.Value = &EncapExtended{ - TunnelType: t, + if e.IsTransitive { + switch e.SubType { + case EC_SUBTYPE_COLOR: + v := binary.BigEndian.Uint32(data[3:7]) + e.Value = &ColorExtended{ + Value: v, + } + case EC_SUBTYPE_ENCAPSULATION: + t := TunnelType(binary.BigEndian.Uint16(data[5:7])) + e.Value = &EncapExtended{ + TunnelType: t, + } + default: + e.Value = &DefaultOpaqueExtendedValue{ + Value: data, //7byte + } } - default: - e.Value = &DefaultOpaqueExtendedValue{ - Value: data, //7byte + } else { + switch e.SubType { + case EC_SUBTYPE_ORIGIN_VALIDATION: + e.Value = &ValidationExtended{ + Value: ValidationState(data[6]), + } + default: + e.Value = &DefaultOpaqueExtendedValue{ + Value: data, //7byte + } } } return nil @@ -4690,6 +4741,7 @@ func (e *OpaqueExtended) Serialize() ([]byte, error) { buf[0] = byte(EC_TYPE_NON_TRANSITIVE_OPAQUE) } bbuf, err := e.Value.Serialize() + e.SubType = ExtendedCommunityAttrSubType(bbuf[0]) if err != nil { return nil, err } diff --git a/packet/bgp_test.go b/packet/bgp_test.go index b7b26d38..d8e41e68 100644 --- a/packet/bgp_test.go +++ b/packet/bgp_test.go @@ -68,7 +68,10 @@ func update() *BGPMessage { NewFourOctetAsSpecificExtended(EC_SUBTYPE_ROUTE_TARGET, 1<<20, 300, isTransitive), NewIPv4AddressSpecificExtended(EC_SUBTYPE_ROUTE_TARGET, "192.2.1.2", 3000, isTransitive), &OpaqueExtended{ - Value: &DefaultOpaqueExtendedValue{[]byte{0, 1, 2, 3, 4, 5, 6, 7}}, + Value: &DefaultOpaqueExtendedValue{[]byte{255, 1, 2, 3, 4, 5, 6, 7}}, + }, + &OpaqueExtended{ + Value: &ValidationExtended{Value: VALIDATION_STATE_INVALID}, }, &UnknownExtended{Type: 99, Value: []byte{0, 1, 2, 3, 4, 5, 6, 7}}, NewESILabelExtended(1000, true), |