github.com/nmstate/kubernetes-nmstate@v0.82.0/pkg/bridge/bridge.go (about) 1 /* 2 Copyright The Kubernetes NMState Authors. 3 4 5 Licensed under the Apache License, Version 2.0 (the "License"); 6 you may not use this file except in compliance with the License. 7 You may obtain a copy of the License at 8 9 http://www.apache.org/licenses/LICENSE-2.0 10 11 Unless required by applicable law or agreed to in writing, software 12 distributed under the License is distributed on an "AS IS" BASIS, 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 See the License for the specific language governing permissions and 15 limitations under the License. 16 */ 17 18 package bridge 19 20 import ( 21 "fmt" 22 23 "github.com/tidwall/gjson" 24 "github.com/tidwall/sjson" 25 26 yaml "sigs.k8s.io/yaml" 27 28 nmstate "github.com/nmstate/kubernetes-nmstate/api/shared" 29 ) 30 31 const minVlanID = 2 32 const maxVlanID = 4094 33 34 var defaultVlanFiltering = map[string]interface{}{ 35 "mode": "trunk", 36 "trunk-tags": []map[string]interface{}{ 37 { 38 "id-range": map[string]interface{}{ 39 "min": minVlanID, 40 "max": maxVlanID, 41 }, 42 }, 43 }, 44 } 45 46 func ApplyDefaultVlanFiltering(desiredState nmstate.State) (nmstate.State, error) { 47 result, err := yaml.YAMLToJSON(desiredState.Raw) 48 if err != nil { 49 return desiredState, fmt.Errorf("error converting desiredState to JSON: %v", err) 50 } 51 52 ifaces := gjson.ParseBytes(result).Get("interfaces").Array() 53 for ifaceIndex, iface := range ifaces { 54 if !isLinuxBridgeUp(iface) { 55 continue 56 } 57 for portIndex, port := range iface.Get("bridge.port").Array() { 58 if hasVlanConfiguration(port) { 59 continue 60 } 61 result, err = sjson.SetBytes( 62 result, 63 fmt.Sprintf("interfaces.%d.bridge.port.%d.vlan", ifaceIndex, portIndex), 64 defaultVlanFiltering, 65 ) 66 if err != nil { 67 return desiredState, err 68 } 69 } 70 } 71 72 resultYaml, err := yaml.JSONToYAML(result) 73 if err != nil { 74 return desiredState, err 75 } 76 return nmstate.State{Raw: resultYaml}, nil 77 } 78 79 func isLinuxBridgeUp(iface gjson.Result) bool { 80 return iface.Get("type").String() == "linux-bridge" && iface.Get("state").String() == "up" 81 } 82 83 func hasVlanConfiguration(port gjson.Result) bool { 84 return port.Get("vlan").Exists() 85 }