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vlan.go
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vlan.go
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package netconf
import (
"fmt"
"strconv"
"strings"
"github.com/vishvananda/netlink"
)
type VlanDefinition struct {
ID int
Name string
}
type Vlan struct {
name string
link netlink.Link
id int
}
func NewVlan(link netlink.Link, name string, id int) (*Vlan, error) {
if name == "" {
name = fmt.Sprintf("%s.%d", link.Attrs().Name, id)
}
v := &Vlan{
name: name,
link: link,
id: id,
}
return v, v.init()
}
func (v *Vlan) init() error {
link, err := netlink.LinkByName(v.name)
if err == nil {
if _, ok := link.(*netlink.Vlan); !ok {
return fmt.Errorf("%s is not a VLAN device", v.name)
}
return nil
}
vlan := netlink.Vlan{}
vlan.ParentIndex = v.link.Attrs().Index
vlan.Name = v.name
vlan.VlanId = v.id
return netlink.LinkAdd(&vlan)
}
func ParseVlanDefinitions(vlans string) ([]VlanDefinition, error) {
vlans = strings.TrimSpace(vlans)
if vlans == "" {
return nil, nil
}
result := []VlanDefinition{}
for _, vlan := range strings.Split(vlans, ",") {
idName := strings.SplitN(strings.TrimSpace(vlan), ":", 2)
id, err := strconv.Atoi(idName[0])
if err != nil {
return nil, fmt.Errorf("Invalid format in %s: %v", vlans, err)
}
def := VlanDefinition{
ID: id,
}
if len(idName) > 1 {
def.Name = idName[1]
}
result = append(result, def)
}
return result, nil
}