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authorSerguei Bezverkhi <sbezverk@cisco.com>2020-05-05 23:22:09 -0400
committerSerguei Bezverkhi <sbezverk@cisco.com>2020-05-05 23:22:09 -0400
commita9232e356c40e4bad2ae0553fb427d4bafc43a69 (patch)
tree330350cc3e9ba6edc92d401462d632f82b578303 /pkg
parente3001f9fe1568f7c39a0c5963630fe38866ec8e1 (diff)
add object definitions
Signed-off-by: Serguei Bezverkhi <sbezverk@cisco.com>
Diffstat (limited to 'pkg')
-rw-r--r--pkg/packet/bgp/prefix_sid.go276
1 files changed, 137 insertions, 139 deletions
diff --git a/pkg/packet/bgp/prefix_sid.go b/pkg/packet/bgp/prefix_sid.go
index c9628797..b19fcecd 100644
--- a/pkg/packet/bgp/prefix_sid.go
+++ b/pkg/packet/bgp/prefix_sid.go
@@ -9,6 +9,7 @@ import (
"github.com/golang/glog"
)
+// PrefixSIDTLVInterface defines standard set of methods to handle Prefix SID attribute's TLVs
type PrefixSIDTLVInterface interface {
Len() int
DecodeFromBytes([]byte) error
@@ -22,7 +23,7 @@ type PathAttributePrefixSID struct {
TLVs []PrefixSIDTLVInterface
}
-type PrefixSIDTLVType uint16
+type PrefixSIDTLVType uint8
type PrefixSIDTLV struct {
Type PrefixSIDTLVType
@@ -61,89 +62,94 @@ func (s *PrefixSIDTLV) DecodeFromBytes(data []byte) ([]byte, error) {
}
type PrefixSIDAttribute struct {
- TLVs map[PrefixSIDTLVType]PrefixSIDTLVInterface
+ TLVs []PrefixSIDTLVInterface
}
func (p *PathAttributePrefixSID) Extract() *PrefixSIDAttribute {
- s := &PrefixSIDAttribute{}
+ s := &PrefixSIDAttribute{
+ TLVs: make([]PrefixSIDTLVInterface, 0),
+ }
- // for _, tlv := range p.TLVs {
- // switch v := tlv.(type) {
- // case *LsTLVNodeFlagBits:
- // l.Node.Flags = v.Extract()
+ for _, tlv := range p.TLVs {
+ switch v := tlv.(type) {
+ case *PrefixSIDType5:
+ glog.Infof("><SB> v: %+v", v)
+ o := &PrefixSIDType5{}
+ s.TLVs = append(s.TLVs, o)
+ // l.Node.Flags = v.Extract()
- // case *LsTLVOpaqueNodeAttr:
- // l.Node.Opaque = &v.Attr
+ // case *LsTLVOpaqueNodeAttr:
+ // l.Node.Opaque = &v.Attr
- // case *LsTLVNodeName:
- // l.Node.Name = &v.Name
+ // case *LsTLVNodeName:
+ // l.Node.Name = &v.Name
- // case *LsTLVIsisArea:
- // l.Node.IsisArea = &v.Area
+ // case *LsTLVIsisArea:
+ // l.Node.IsisArea = &v.Area
- // case *LsTLVLocalIPv4RouterID:
- // l.Node.LocalRouterID = &v.IP
- // l.Link.LocalRouterID = &v.IP
+ // case *LsTLVLocalIPv4RouterID:
+ // l.Node.LocalRouterID = &v.IP
+ // l.Link.LocalRouterID = &v.IP
- // case *LsTLVLocalIPv6RouterID:
- // l.Node.LocalRouterIDv6 = &v.IP
- // l.Link.LocalRouterIDv6 = &v.IP
+ // case *LsTLVLocalIPv6RouterID:
+ // l.Node.LocalRouterIDv6 = &v.IP
+ // l.Link.LocalRouterIDv6 = &v.IP
- // case *LsTLVSrCapabilities:
- // l.Node.SrCapabilties = v.Extract()
+ // case *LsTLVSrCapabilities:
+ // l.Node.SrCapabilties = v.Extract()
- // case *LsTLVSrAlgorithm:
- // l.Node.SrAlgorithms = &v.Algorithm
+ // case *LsTLVSrAlgorithm:
+ // l.Node.SrAlgorithms = &v.Algorithm
- // case *LsTLVSrLocalBlock:
- // l.Node.SrLocalBlock = v.Extract()
+ // case *LsTLVSrLocalBlock:
+ // l.Node.SrLocalBlock = v.Extract()
- // case *LsTLVRemoteIPv4RouterID:
- // l.Link.RemoteRouterID = &v.IP
+ // case *LsTLVRemoteIPv4RouterID:
+ // l.Link.RemoteRouterID = &v.IP
- // case *LsTLVRemoteIPv6RouterID:
- // l.Link.RemoteRouterIDv6 = &v.IP
+ // case *LsTLVRemoteIPv6RouterID:
+ // l.Link.RemoteRouterIDv6 = &v.IP
- // case *LsTLVAdminGroup:
- // l.Link.AdminGroup = &v.AdminGroup
+ // case *LsTLVAdminGroup:
+ // l.Link.AdminGroup = &v.AdminGroup
- // case *LsTLVMaxLinkBw:
- // l.Link.Bandwidth = &v.Bandwidth
+ // case *LsTLVMaxLinkBw:
+ // l.Link.Bandwidth = &v.Bandwidth
- // case *LsTLVMaxReservableLinkBw:
- // l.Link.ReservableBandwidth = &v.Bandwidth
+ // case *LsTLVMaxReservableLinkBw:
+ // l.Link.ReservableBandwidth = &v.Bandwidth
- // case *LsTLVUnreservedBw:
- // l.Link.UnreservedBandwidth = &v.Bandwidth
+ // case *LsTLVUnreservedBw:
+ // l.Link.UnreservedBandwidth = &v.Bandwidth
- // case *LsTLVSrlg:
- // l.Link.Srlgs = &v.Srlgs
+ // case *LsTLVSrlg:
+ // l.Link.Srlgs = &v.Srlgs
- // case *LsTLVTEDefaultMetric:
- // l.Link.DefaultTEMetric = &v.Metric
+ // case *LsTLVTEDefaultMetric:
+ // l.Link.DefaultTEMetric = &v.Metric
- // case *LsTLVIGPMetric:
- // l.Link.IGPMetric = &v.Metric
+ // case *LsTLVIGPMetric:
+ // l.Link.IGPMetric = &v.Metric
- // case *LsTLVOpaqueLinkAttr:
- // l.Link.Opaque = &v.Attr
+ // case *LsTLVOpaqueLinkAttr:
+ // l.Link.Opaque = &v.Attr
- // case *LsTLVLinkName:
- // l.Link.Name = &v.Name
+ // case *LsTLVLinkName:
+ // l.Link.Name = &v.Name
- // case *LsTLVAdjacencySID:
- // l.Link.SrAdjacencySID = &v.SID
+ // case *LsTLVAdjacencySID:
+ // l.Link.SrAdjacencySID = &v.SID
- // case *LsTLVIGPFlags:
- // l.Prefix.IGPFlags = v.Extract()
+ // case *LsTLVIGPFlags:
+ // l.Prefix.IGPFlags = v.Extract()
- // case *LsTLVOpaquePrefixAttr:
- // l.Prefix.Opaque = &v.Attr
+ // case *LsTLVOpaquePrefixAttr:
+ // l.Prefix.Opaque = &v.Attr
- // case *LsTLVPrefixSID:
- // l.Prefix.SrPrefixSID = &v.SID
- // }
- // }
+ // case *LsTLVPrefixSID:
+ // l.Prefix.SrPrefixSID = &v.SID
+ }
+ }
return s
}
@@ -166,86 +172,6 @@ func (p *PathAttributePrefixSID) DecodeFromBytes(data []byte, options ...*Marsha
switch t.Type {
case 5:
tlv = &PrefixSIDType5{}
- // // Node NLRI-related TLVs (https://tools.ietf.org/html/rfc7752#section-3.3.1)
- // case LS_TLV_NODE_FLAG_BITS:
- // tlv = &LsTLVNodeFlagBits{}
-
- // case LS_TLV_OPAQUE_NODE_ATTR:
- // tlv = &LsTLVOpaqueNodeAttr{}
-
- // case LS_TLV_NODE_NAME:
- // tlv = &LsTLVNodeName{}
-
- // case LS_TLV_ISIS_AREA:
- // tlv = &LsTLVIsisArea{}
-
- // // Used by Link NLRI as well.
- // case LS_TLV_IPV4_LOCAL_ROUTER_ID:
- // tlv = &LsTLVLocalIPv4RouterID{}
-
- // // Used by Link NLRI as well.
- // case LS_TLV_IPV6_LOCAL_ROUTER_ID:
- // tlv = &LsTLVLocalIPv6RouterID{}
-
- // // SR-related TLVs (draft-ietf-idr-bgp-ls-segment-routing-ext-08) for Node NLRI
- // case LS_TLV_SR_CAPABILITIES:
- // tlv = &LsTLVSrCapabilities{}
-
- // case LS_TLV_SR_ALGORITHM:
- // tlv = &LsTLVSrAlgorithm{}
-
- // case LS_TLV_SR_LOCAL_BLOCK:
- // tlv = &LsTLVSrLocalBlock{}
-
- // // Link NLRI-related TLVs (https://tools.ietf.org/html/rfc7752#section-3.3.2)
- // case LS_TLV_IPV4_REMOTE_ROUTER_ID:
- // tlv = &LsTLVRemoteIPv4RouterID{}
-
- // case LS_TLV_IPV6_REMOTE_ROUTER_ID:
- // tlv = &LsTLVRemoteIPv6RouterID{}
-
- // case LS_TLV_ADMIN_GROUP:
- // tlv = &LsTLVAdminGroup{}
-
- // case LS_TLV_MAX_LINK_BANDWIDTH:
- // tlv = &LsTLVMaxLinkBw{}
-
- // case LS_TLV_MAX_RESERVABLE_BANDWIDTH:
- // tlv = &LsTLVMaxReservableLinkBw{}
-
- // case LS_TLV_UNRESERVED_BANDWIDTH:
- // tlv = &LsTLVUnreservedBw{}
-
- // case LS_TLV_SRLG:
- // tlv = &LsTLVSrlg{}
-
- // case LS_TLV_TE_DEFAULT_METRIC:
- // tlv = &LsTLVTEDefaultMetric{}
-
- // case LS_TLV_IGP_METRIC:
- // tlv = &LsTLVIGPMetric{}
-
- // case LS_TLV_OPAQUE_LINK_ATTR:
- // tlv = &LsTLVOpaqueLinkAttr{}
-
- // case LS_TLV_LINK_NAME:
- // tlv = &LsTLVLinkName{}
-
- // // SR-related TLVs (draft-ietf-idr-bgp-ls-segment-routing-ext-08) for Link NLRI
- // case LS_TLV_ADJACENCY_SID:
- // tlv = &LsTLVAdjacencySID{}
-
- // // Prefix NLRI-related TLVs (https://tools.ietf.org/html/rfc7752#section-3.3.3)
- // case LS_TLV_IGP_FLAGS:
- // tlv = &LsTLVIGPFlags{}
-
- // case LS_TLV_OPAQUE_PREFIX_ATTR:
- // tlv = &LsTLVOpaquePrefixAttr{}
-
- // // SR-related TLVs (draft-ietf-idr-bgp-ls-segment-routing-ext-08) for Prefix NLRI
- // case LS_TLV_PREFIX_SID:
- // tlv = &LsTLVPrefixSID{}
-
default:
tlvs = tlvs[t.Len():]
continue
@@ -297,9 +223,10 @@ func (p *PathAttributePrefixSID) MarshalJSON() ([]byte, error) {
})
}
+// PrefixSIDType5 defines the structure of
type PrefixSIDType5 struct {
- Type PrefixSIDTLVType
- Length uint16
+ PrefixSIDTLV
+ ServiceTLVs []PrefixSIDTLVInterface
}
func (s *PrefixSIDType5) Len() int {
@@ -341,3 +268,74 @@ func (s *PrefixSIDType5) MarshalJSON() ([]byte, error) {
func (s *PrefixSIDType5) String() string {
return ""
}
+
+func (s *PrefixSIDType5) Extract() string {
+ return ""
+}
+
+type SRv6ServiceSubTLV struct {
+ PrefixSIDTLV
+ TLV []PrefixSIDTLVInterface
+}
+
+func (s *SRv6ServiceSubTLV) Len() int {
+ return int(s.Length) + tlvHdrLen
+}
+
+func (s *SRv6ServiceSubTLV) Serialize() ([]byte, error) {
+ // if len(value) != int(s.Length) {
+ // return nil, malformedAttrListErr("serialization failed: Prefix SID TLV malformed")
+ // }
+
+ // buf := make([]byte, tlvHdrLen+len(value))
+ // binary.BigEndian.PutUint16(buf[:2], uint16(s.Type))
+ // binary.BigEndian.PutUint16(buf[2:4], uint16(s.Length))
+ // copy(buf[4:], value)
+
+ // return buf, nil
+ return nil, nil
+}
+
+func (s *SRv6ServiceSubTLV) DecodeFromBytes(data []byte) error {
+ if len(data) < tlvHdrLen {
+ return malformedAttrListErr("decoding failed: Prefix SID TLV malformed")
+ }
+ s.Type = PrefixSIDTLVType(binary.BigEndian.Uint16(data[:2]))
+ s.Length = binary.BigEndian.Uint16(data[2:4])
+
+ if len(data) < s.Len() {
+ return malformedAttrListErr("decoding failed: Prefix SID TLV malformed")
+ }
+
+ return nil
+}
+
+func (s *SRv6ServiceSubTLV) MarshalJSON() ([]byte, error) {
+ return nil, nil
+}
+
+func (s *SRv6ServiceSubTLV) String() string {
+ return ""
+}
+
+// SRv6InformationSubTLV defines a structure of SRv6 Information Sub TLV (type 1) object
+// https://tools.ietf.org/html/draft-dawra-bess-srv6-services-02#section-2.1.1
+type SRv6InformationSubTLV struct {
+ PrefixSIDTLV
+ SID []byte
+ Flags uint8
+ EndpointBehavior uint16
+ SubSubTLV []PrefixSIDTLVInterface
+}
+
+// SRv6SIDStructureSubSubTLV defines a structure of SRv6 SID Structure Sub Sub TLV (type 1) object
+// https://tools.ietf.org/html/draft-dawra-bess-srv6-services-02#section-2.1.2.1
+type SRv6SIDStructureSubSubTLV struct {
+ PrefixSIDTLV
+ LocalBlockLength uint8 `json:"local_block_length,omitempty"`
+ LocatorNodeLength uint8 `json:"locator_node_length,omitempty"`
+ FunctionLength uint8 `json:"function_length,omitempty"`
+ ArgumentLength uint8 `json:"argument_length,omitempty"`
+ TranspositionLength uint8 `json:"transposition_length,omitempty"`
+ TranspositionOffset uint8 `json:"transposition_offset,omitempty"`
+}