diff options
Diffstat (limited to 'server')
| -rw-r--r-- | server/peer.go | 8 | ||||
| -rw-r--r-- | server/server.go | 4 | ||||
| -rw-r--r-- | server/server_test.go | 62 |
3 files changed, 71 insertions, 3 deletions
diff --git a/server/peer.go b/server/peer.go index 15029bd6..ed4d1ae4 100644 --- a/server/peer.go +++ b/server/peer.go @@ -278,6 +278,14 @@ func (peer *Peer) filterpath(path, old *table.Path) *table.Path { Info: peer.fsm.peerInfo, } path = peer.policy.ApplyPolicy(peer.TableID(), table.POLICY_DIRECTION_EXPORT, path, options) + // When 'path' is filetered (path == nil), check 'old' has been sent to this peer. + // If it has, send withdrawal to the peer. + if path == nil && old != nil { + o := peer.policy.ApplyPolicy(peer.TableID(), table.POLICY_DIRECTION_EXPORT, old, options) + if o != nil { + path = old.Clone(true) + } + } // draft-uttaro-idr-bgp-persistence-02 // 4.3. Processing LLGR_STALE Routes diff --git a/server/server.go b/server/server.go index 5238c33b..da6feba2 100644 --- a/server/server.go +++ b/server/server.go @@ -367,7 +367,7 @@ func filterpath(peer *Peer, path, old *table.Path) *table.Path { } if ignore { - if path.IsWithdraw == false && old != nil { + if !path.IsWithdraw && old != nil && old.GetSource().Address.String() != peer.ID() { // we advertise a route from ebgp, // which is the old best. We got the // new best from ibgp. We don't @@ -400,7 +400,7 @@ func filterpath(peer *Peer, path, old *table.Path) *table.Path { // the withdrawal path. // Thing is same when peer A and we advertized prefix P (as local // route), then, we withdraws the prefix. - if path.IsWithdraw == false && old != nil { + if !path.IsWithdraw && old != nil && old.GetSource().Address.String() != peer.ID() { return old.Clone(true) } } diff --git a/server/server_test.go b/server/server_test.go index 8f5fcc4d..3aaa7374 100644 --- a/server/server_test.go +++ b/server/server_test.go @@ -187,11 +187,13 @@ func TestNumGoroutineWithAddDeleteNeighbor(t *testing.T) { func newPeerandInfo(myAs, as uint32, address string, rib *table.TableManager) (*Peer, *table.PeerInfo) { nConf := &config.Neighbor{Config: config.NeighborConfig{PeerAs: as, NeighborAddress: address}} config.SetDefaultNeighborConfigValues(nConf, myAs) + policy := table.NewRoutingPolicy() + policy.Reset(&config.RoutingPolicy{}, nil) p := NewPeer( &config.Global{Config: config.GlobalConfig{As: myAs}}, nConf, rib, - &table.RoutingPolicy{}) + policy) for _, f := range rib.GetRFlist() { p.fsm.rfMap[f] = true } @@ -283,3 +285,61 @@ func TestFilterpathWithiBGP(t *testing.T) { assert.Nil(t, path) } + +func TestFilterpathWithRejectPolicy(t *testing.T) { + rib1 := table.NewTableManager([]bgp.RouteFamily{bgp.RF_IPv4_UC}) + _, pi1 := newPeerandInfo(1, 2, "192.168.0.1", rib1) + rib2 := table.NewTableManager([]bgp.RouteFamily{bgp.RF_IPv4_UC}) + p2, _ := newPeerandInfo(1, 3, "192.168.0.2", rib2) + + comSet1 := config.CommunitySet{ + CommunitySetName: "comset1", + CommunityList: []string{"100:100"}, + } + s, _ := table.NewCommunitySet(comSet1) + p2.policy.AddDefinedSet(s) + + statement := config.Statement{ + Name: "stmt1", + Conditions: config.Conditions{ + BgpConditions: config.BgpConditions{ + MatchCommunitySet: config.MatchCommunitySet{ + CommunitySet: "comset1", + }, + }, + }, + Actions: config.Actions{ + RouteDisposition: config.ROUTE_DISPOSITION_REJECT_ROUTE, + }, + } + policy := config.PolicyDefinition{ + Name: "policy1", + Statements: []config.Statement{statement}, + } + p, _ := table.NewPolicy(policy) + p2.policy.AddPolicy(p, false) + policies := []*config.PolicyDefinition{ + &config.PolicyDefinition{ + Name: "policy1", + }, + } + p2.policy.AddPolicyAssignment(p2.TableID(), table.POLICY_DIRECTION_EXPORT, policies, table.ROUTE_TYPE_ACCEPT) + + for _, addCommunity := range []bool{false, true, false, true} { + nlri := bgp.NewIPAddrPrefix(24, "10.10.10.0") + pa1 := []bgp.PathAttributeInterface{bgp.NewPathAttributeAsPath([]bgp.AsPathParamInterface{bgp.NewAs4PathParam(2, []uint32{1})}), bgp.NewPathAttributeLocalPref(200)} + if addCommunity { + pa1 = append(pa1, bgp.NewPathAttributeCommunities([]uint32{100<<16 | 100})) + } + path1 := table.NewPath(pi1, nlri, false, pa1, time.Now(), false) + new, old := process(rib2, []*table.Path{path1}) + assert.Equal(t, new, path1) + path2 := p2.filterpath(new, old) + if addCommunity { + assert.True(t, path2.IsWithdraw) + } else { + assert.False(t, path2.IsWithdraw) + } + } + +} |