github.com/imran-kn/cilium-fork@v1.6.9/pkg/policy/trafficdirection/trafficdirection.go (about)

     1  // Copyright 2018 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 trafficdirection
    16  
    17  // TrafficDirection specifies the directionality of policy (ingress or egress).
    18  type TrafficDirection uint8
    19  
    20  const (
    21  	// Invalid represents an invalid traffic direction.
    22  	Invalid TrafficDirection = 2
    23  
    24  	// Egress represents egress traffic.
    25  	Egress TrafficDirection = 1
    26  
    27  	// Ingress represents ingress traffic.
    28  	Ingress TrafficDirection = 0
    29  )
    30  
    31  // Uint8 normalizes the TrafficDirection for insertion into BPF maps.
    32  func (td TrafficDirection) Uint8() uint8 {
    33  	return uint8(td)
    34  }
    35  
    36  func (td TrafficDirection) String() string {
    37  	if td == Egress {
    38  		return "Egress"
    39  	} else if td == Ingress {
    40  		return "Ingress"
    41  	}
    42  
    43  	return "Unknown"
    44  }