github.com/elfadel/cilium@v1.6.12/pkg/u8proto/u8proto.go (about) 1 // Copyright 2016-2017 Authors of Cilium 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package u8proto 16 17 import ( 18 "fmt" 19 "strconv" 20 "strings" 21 ) 22 23 // These definitions must contain and be compatible with the string 24 // values defined for pkg/pollicy/api/L4Proto 25 26 const ( 27 // ANY represents all protocols. 28 ANY U8proto = 0 29 ICMP U8proto = 1 30 TCP U8proto = 6 31 UDP U8proto = 17 32 ICMPv6 U8proto = 58 33 ) 34 35 var protoNames = map[U8proto]string{ 36 0: "ANY", 37 1: "ICMP", 38 6: "TCP", 39 17: "UDP", 40 58: "ICMPv6", 41 } 42 43 var ProtoIDs = map[string]U8proto{ 44 "all": 0, 45 "any": 0, 46 "icmp": 1, 47 "tcp": 6, 48 "udp": 17, 49 "icmpv6": 58, 50 } 51 52 type U8proto uint8 53 54 func (p U8proto) String() string { 55 if _, ok := protoNames[p]; ok { 56 return protoNames[p] 57 } 58 return strconv.Itoa(int(p)) 59 } 60 61 func ParseProtocol(proto string) (U8proto, error) { 62 if u, ok := ProtoIDs[strings.ToLower(proto)]; ok { 63 return u, nil 64 } 65 return 0, fmt.Errorf("unknown protocol '%s'", proto) 66 }