forked from ligato/vpp-agent
-
Notifications
You must be signed in to change notification settings - Fork 0
/
interface_address.go
124 lines (106 loc) · 4.1 KB
/
interface_address.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
// Copyright (c) 2018 Cisco and/or its affiliates.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package descriptor
import (
"github.com/gogo/protobuf/proto"
"github.com/ligato/cn-infra/logging"
"github.com/pkg/errors"
interfaces "github.com/ligato/vpp-agent/api/models/vpp/interfaces"
kvs "github.com/ligato/vpp-agent/plugins/kvscheduler/api"
"github.com/ligato/vpp-agent/plugins/vpp/ifplugin/ifaceidx"
"github.com/ligato/vpp-agent/plugins/vpp/ifplugin/vppcalls"
)
const (
// InterfaceAddressDescriptorName is the name of the descriptor for assigning
// IP addresses to VPP interfaces.
InterfaceAddressDescriptorName = "vpp-interface-address"
// dependency labels
interfaceInVrfDep = "interface-assigned-to-vrf-table"
)
// InterfaceAddressDescriptor (un)assigns IP address to/from VPP interface.
type InterfaceAddressDescriptor struct {
log logging.Logger
ifHandler vppcalls.InterfaceVppAPI
ifIndex ifaceidx.IfaceMetadataIndex
}
// NewInterfaceAddressDescriptor creates a new instance of InterfaceAddressDescriptor.
func NewInterfaceAddressDescriptor(ifHandler vppcalls.InterfaceVppAPI, ifIndex ifaceidx.IfaceMetadataIndex,
log logging.PluginLogger) *kvs.KVDescriptor {
descrCtx := &InterfaceAddressDescriptor{
ifHandler: ifHandler,
ifIndex: ifIndex,
log: log.NewLogger("interface-address-descriptor"),
}
return &kvs.KVDescriptor{
Name: InterfaceAddressDescriptorName,
KeySelector: descrCtx.IsInterfaceAddressKey,
Validate: descrCtx.Validate,
Create: descrCtx.Create,
Delete: descrCtx.Delete,
Dependencies: descrCtx.Dependencies,
}
}
// IsInterfaceVrfKey returns true if the key represents assignment of an IP address
// to a VPP interface.
func (d *InterfaceAddressDescriptor) IsInterfaceAddressKey(key string) bool {
_, _, _, _, isAddrKey := interfaces.ParseInterfaceAddressKey(key)
return isAddrKey
}
// Validate validates IP address to be assigned to an interface.
func (d *InterfaceAddressDescriptor) Validate(key string, emptyVal proto.Message) (err error) {
_, _, _, invalidIP, _ := interfaces.ParseInterfaceAddressKey(key)
if invalidIP {
return errors.New("invalid IP address")
}
return nil
}
// Create assigns IP address to an interface.
func (d *InterfaceAddressDescriptor) Create(key string, emptyVal proto.Message) (metadata kvs.Metadata, err error) {
iface, ipAddr, ipAddrNet, _, _ := interfaces.ParseInterfaceAddressKey(key)
ipAddrNet.IP = ipAddr
ifMeta, found := d.ifIndex.LookupByName(iface)
if !found {
err = errors.Errorf("failed to find interface %s", iface)
d.log.Error(err)
return nil, err
}
err = d.ifHandler.AddInterfaceIP(ifMeta.SwIfIndex, ipAddrNet)
return nil, err
}
// Delete unassigns IP address from an interface.
func (d *InterfaceAddressDescriptor) Delete(key string, emptyVal proto.Message, metadata kvs.Metadata) (err error) {
iface, ipAddr, ipAddrNet, _, _ := interfaces.ParseInterfaceAddressKey(key)
ipAddrNet.IP = ipAddr
if ipAddr.IsLinkLocalUnicast() {
return nil
}
ifMeta, found := d.ifIndex.LookupByName(iface)
if !found {
err = errors.Errorf("failed to find interface %s", iface)
d.log.Error(err)
return err
}
err = d.ifHandler.DelInterfaceIP(ifMeta.SwIfIndex, ipAddrNet)
return err
}
// Dependencies lists assignment of the interface into the VRF table as the only dependency.
func (d *InterfaceAddressDescriptor) Dependencies(key string, emptyVal proto.Message) []kvs.Dependency {
iface, _, _, _, _ := interfaces.ParseInterfaceAddressKey(key)
return []kvs.Dependency{{
Label: interfaceInVrfDep,
AnyOf: kvs.AnyOfDependency{
KeyPrefixes: []string{interfaces.InterfaceVrfKeyPrefix(iface)},
},
}}
}