table: add support for route target constraint nlri

add rtc route

$ gobgp global rib add 65000 77 -a rtc

check it

$ gobgp global rib -a rtc

   Network        Next Hop AS_PATH Age        Attrs
*> 65001:65000:75 0.0.0.0  [65001] 00:15:35   [{Origin: IGP}]

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>

2 files changed, 29 insertions, 0 deletions

diff --git a/server/grpc_server.go b/server/grpc_server.go
index 01acaf3d..c218a4ac 100644
--- a/server/grpc_server.go
+++ b/server/grpc_server.go
@@ -56,6 +56,8 @@ func convertAf2Rf(af *api.AddressFamily) (bgp.RouteFamily, error) {
 		return bgp.RF_EVPN, nil
 	} else if af.Equal(api.AF_ENCAP) {
 		return bgp.RF_ENCAP, nil
+	} else if af.Equal(api.AF_RTC) {
+		return bgp.RF_RTC_UC, nil
 	}
 
 	return bgp.RouteFamily(0), fmt.Errorf("unsupported address family: %v", af)
diff --git a/server/peer.go b/server/peer.go
index 64235613..7af2653e 100644
--- a/server/peer.go
+++ b/server/peer.go
@@ -422,6 +422,33 @@ func (peer *Peer) handleGrpc(grpcReq *GrpcRequest) {
 				}
 			}(path.Attrs)
 
+		case bgp.RF_RTC_UC:
+			var ec bgp.ExtendedCommunityInterface
+			target := path.Nlri.RtNlri.Target
+			ec_type := target.Type
+			ec_subtype := target.Subtype
+			switch ec_type {
+			case api.EXTENDED_COMMUNITIE_TYPE_TWO_OCTET_AS_SPECIFIC:
+				if target.Asn == 0 && target.LocalAdmin == 0 {
+					break
+				}
+				ec = &bgp.TwoOctetAsSpecificExtended{
+					SubType:      bgp.ExtendedCommunityAttrSubType(ec_subtype),
+					AS:           uint16(target.Asn),
+					LocalAdmin:   target.LocalAdmin,
+					IsTransitive: true,
+				}
+			default:
+				result.ResponseErr = fmt.Errorf("Invalid endpoint ip address: %s", path.Nlri.Prefix)
+				grpcReq.ResponseCh <- result
+				close(grpcReq.ResponseCh)
+				return
+			}
+
+			nlri = bgp.NewRouteTargetMembershipNLRI(peer.globalConfig.As, ec)
+
+			pattr = append(pattr, bgp.NewPathAttributeMpReachNLRI("0.0.0.0", []bgp.AddrPrefixInterface{nlri}))
+
 		default:
 			result.ResponseErr = fmt.Errorf("Unsupported address family: %s", rf)
 			grpcReq.ResponseCh <- result